WO2014157637A1 - Welding apparatus - Google Patents

Welding apparatus Download PDF

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Publication number
WO2014157637A1
WO2014157637A1 PCT/JP2014/059188 JP2014059188W WO2014157637A1 WO 2014157637 A1 WO2014157637 A1 WO 2014157637A1 JP 2014059188 W JP2014059188 W JP 2014059188W WO 2014157637 A1 WO2014157637 A1 WO 2014157637A1
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WO
WIPO (PCT)
Prior art keywords
cylindrical member
pressing mechanism
welded
welding
axis
Prior art date
Application number
PCT/JP2014/059188
Other languages
French (fr)
Japanese (ja)
Inventor
直宗 野間
正光 飯野
英史 谷口
安広 杉山
Original Assignee
株式会社エフテック
株式会社富士機械工作所
岩谷産業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社エフテック, 株式会社富士機械工作所, 岩谷産業株式会社 filed Critical 株式会社エフテック
Publication of WO2014157637A1 publication Critical patent/WO2014157637A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08Making tubes with welded or soldered seams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00Welding or cutting by means of a plasma
    • B23K10/02Plasma welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00Electron-beam welding or cutting
    • B23K15/0046Welding
    • B23K15/0053Seam welding
    • B23K15/006Seam welding of rectilinear seams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00Electron-beam welding or cutting
    • B23K15/0046Welding
    • B23K15/0093Welding characterised by the properties of the materials to be welded
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20Bonding
    • B23K26/21Bonding by welding
    • B23K26/24Seam welding
    • B23K26/26Seam welding of rectilinear seams
    • B23K26/262Seam welding of rectilinear seams of longitudinal seams of tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20Bonding
    • B23K26/32Bonding taking account of the properties of the material involved
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/02Seam welding; Backing means; Inserts
    • B23K9/025Seam welding; Backing means; Inserts for rectilinear seams
    • B23K9/0253Seam welding; Backing means; Inserts for rectilinear seams for the longitudinal seam of tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/23Arc welding or cutting taking account of the properties of the materials to be welded
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/04Tubular or hollow articles
    • B23K2101/06Tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/02Iron or ferrous alloys
    • B23K2103/04Steel or steel alloys
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/50Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26

Definitions

  • the present invention relates to a welding apparatus, and more particularly to a welding apparatus for obtaining a cylindrical member that is a strength part of an automobile or the like.
  • Such pipe members are also distributed as commercial products.
  • steel plates were purchased and processed into pipe members with a desired configuration. Is preferable. For that purpose, after the purchased steel plate is formed into a cylindrical member, it is necessary to weld the opposite ends.
  • Patent Document 1 relates to a welding method for forming a cylindrical body by welding abutting portions at both ends of a workpiece W obtained by bending a plate body into a cylindrical shape in advance.
  • Patent Document 1 is a configuration for MIG welding or MAG welding, and does not disclose any specific configuration when applied to other welding methods. Is.
  • the present invention has been made through the above-described studies.
  • the cylindrical member is smoothly and continuously introduced into the welded portion with the opposite ends of the cylindrical member facing each other. It is an object of the present invention to provide a welding apparatus capable of continuously welding both end portions in contact with each other.
  • the welding apparatus forms the plate member into a cylindrical shape so that the first end and the second end of the plate member face each other.
  • the first end portion and the second end portion of the feed mechanism that feeds the obtained tubular member and the tubular member that is fed by the feed mechanism are opposed to each other via a first spacer.
  • the first pressing mechanism that presses the welding member, and the cylindrical member pressed by the first pressing mechanism while being fed by the welding gun and the feeding mechanism enters the inside, and the first end portion A welded portion having a guide member that guides toward the welding gun while holding the cylindrical member so that the second end portion is maintained in a state of being opposed to the second end portion.
  • the present invention provides that the first pressing mechanism includes an intermediate portion on the first end side of the cylindrical member and the second end side of the cylindrical member.
  • the second aspect is to have a pair of rotatable rollers, each of which presses correspondingly to the intermediate portion.
  • the guide member has a through-hole through which the cylindrical member fed by the feeding mechanism can be inserted, and a gap portion opened in the through-hole.
  • the third aspect is that the welding gun faces the first end and the second end in a state of being in contact with the gap.
  • the present invention further includes the cylindrical shape in which the first end portion and the second end portion are welded by the welding portion while being fed by the feeding mechanism.
  • a second pressing mechanism that presses the member, wherein the second pressing mechanism includes the welded first end and second end of the tubular member, and the welding of the tubular member.
  • a fourth aspect is that each of the first end portion and the portion facing the second end portion that presses correspondingly has a pair of rotatable rollers.
  • the present invention further includes a third pressing mechanism that presses the cylindrical member that has passed through the second pressing mechanism while being fed by the feeding mechanism, and the third pressing mechanism.
  • the mechanism is opposed to the welded first end and the second end of the tubular member, and the welded first end and the second end of the tubular member.
  • the fifth aspect is to have a pair of freely rotatable rollers, each of which presses correspondingly.
  • the cylindrical member obtained by forming the plate member into a cylindrical shape so that the first end and the second end of the plate member face each other is sent.
  • a feeding mechanism, a first pressing mechanism that presses the cylindrical member fed by the feeding mechanism so that the first end and the second end face each other via the first spacer, and welding The cylindrical member pressed by the first pressing mechanism while being fed by the gun and the feeding mechanism enters the inside thereof, and the first end and the second end are opposed to each other via the second spacer.
  • a welded portion having a guide member that guides toward the welding gun while holding the tubular member so as to be maintained in a maintained state, thereby maintaining the opposed state of the opposite ends of the tubular member. In this state, the cylindrical members are smoothly and continuously introduced into the welded portion, and the cylindrical members are brought into contact with each other. It can be welded both end portions continuously.
  • the first pressing mechanism includes an intermediate portion on the first end side of the cylindrical member and an intermediate portion on the second end side of the cylindrical member;
  • the guide member has a through-hole through which the cylindrical member fed by the feeding mechanism can be inserted, and a gap portion opened in the through-hole, and a welding gun
  • the both ends of the cylindrical member are brought into contact with each other while realizing the state in which the opposite ends are in contact with each other. Can be reliably welded.
  • the second member presses the tubular member welded with the first end and the second end at the weld while being fed by the feed mechanism.
  • the second pressing mechanism includes a welded first end and second end of the tubular member, and a welded first end and second end of the tubular member.
  • the third pressing mechanism further includes a third pressing mechanism that presses the cylindrical member that has passed through the second pressing mechanism while being fed by the feeding mechanism.
  • the welded first end and the second end of the tubular member, and the welded first end and the second end of the tubular member facing the second end, By having a pair of rotatable rollers that each press correspondingly, the shape distortion in the longitudinal direction of the welded cylindrical member can be reliably corrected.
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is B1-B1 sectional drawing of FIG.
  • FIG. 2 is a B2-B2 cross-sectional view of FIG. 1.
  • FIG. 2 is a cross-sectional view taken along the line CC of FIG.
  • FIG. 2 is a DD sectional view of FIG. 1.
  • It is a top view which shows the cylindrical member of the state which the both ends used with the welding apparatus in this embodiment are not contact
  • the x-axis, y-axis, and z-axis form a three-axis orthogonal coordinate system.
  • the x-axis direction is the longitudinal direction of the cylindrical member, and the positive z-axis direction is the upward direction of the cylindrical member.
  • FIG. 1 is a side view of the welding apparatus in the present embodiment.
  • 2A to 3B are longitudinal sectional views of the welding apparatus according to the present embodiment.
  • FIG. 2A is a sectional view taken along the line AA in FIG. 1
  • FIG. 2B is a sectional view taken along the line B1-B1 in FIG.
  • FIG. 2 is a B2-B2 cross-sectional view of FIG. 1.
  • 3 is a longitudinal sectional view of the welding apparatus in the present embodiment
  • FIG. 3A is a sectional view taken along the line CC in FIG. 1
  • FIG. 4A is a top view of the cylindrical member in a state where both ends are not in contact with each other.
  • 4B is a front view of FIG. 4A as viewed in the negative direction of the x-axis
  • FIG. 4C is a top view of the tubular member with both ends welded
  • FIG. 4D is a view of FIG. 4C as viewed in the negative direction of the x-axis.
  • the welding apparatus 1 is rounded so that the one end portion 10 a and the other end portion 10 b face each other in the y-axis direction on the positive direction side of the z-axis of the tubular member 10.
  • one end 10a and the other end 10b of the cylindrical member 10 made of metal such as iron are welded.
  • the welding apparatus 1 includes a feed mechanism 20 that feeds the cylindrical member 10, a first pressing mechanism 30 that is a first process part of a series of processes, and a welding part that is a process part downstream of the first pressing mechanism 30. 40, a second pressing mechanism 50 that is a process part downstream of the welded part 40, and a third pressing mechanism 60 that is a process part downstream of the second pressing mechanism 50.
  • the one end portion 10 a and the other end portion 10 b are positioned to face each other on the positive direction side of the tubular member 10 in the z axis.
  • the feed mechanism 20 includes a bar member 22 and a flange member 24 fixed to the bar member 22, which are typically made of metal such as iron having sufficient strength.
  • the rod member 22 is connected to a drive source such as a motor (not shown), and is movable in the x-axis direction with power from the drive source.
  • the flange member 24 can freely contact the end of the cylindrical member 10 on the positive side of the x axis. That is, when the bar member 22 and the flange member 24 are moved toward the negative direction side of the x axis by the power from the drive source, the feed mechanism 20 is located on the positive side of the x axis with respect to the flange member 24.
  • the cylindrical member 10 with which the end is in contact can be moved in the negative direction of the x axis and sent.
  • the first pressing mechanism 30 is disposed between the right roller 32 and the left roller 34 facing each other in the y-axis direction, the support member 36 that supports the right roller 32 and the left roller 34, and the right roller 32 and the left roller 34.
  • Plate-like spacers 38 which are typically made of metal such as iron having sufficient strength.
  • the right roller 32 and the left roller 34 are respectively provided with recesses 32a and 34a, and the recesses 32a and 34a have a wall shape that gives a predetermined margin in the circumferential direction to the tubular member 10 with the spacer 38 interposed therebetween.
  • the annular hole having having is defined in cooperation.
  • the support member 36 has a right roller 32 and a left roller 34 pivotally supported on the upper portion thereof, and is rotatably mounted with support shafts 36a and 36b each parallel to the z-axis. It is fixed on the support plate 70 fixed on the floor to be omitted.
  • Each of the support shafts 36a and 36b is connected to a drive source such as a motor (not shown), and is rotated in the opposite direction by the drive force from the drive source, so that the right roller 32 and the left roller 34 are mutually connected.
  • the shaft is supported so as to be rotatable in the opposite direction.
  • the spacer 38 has a flat plate shape, and is fixed to a support member (not shown) fixed on the floor so as to be erected between the right roller 32 and the left roller 34.
  • the right roller 32 and the left roller 34 are separated in the y-axis direction by a distance corresponding to the plate thickness of the spacer 38.
  • a drive source such as a motor (not shown).
  • the concave portions 32a and 34a cooperate to make the one end 10a and the other end 10b of the cylindrical member 10 face each other in the y-axis direction with the spacer 38 interposed therebetween.
  • Each of the support members 36a and 36b connected to the drive source can be rotated by rotating the support shafts 36a and 36b in a state in which an annular hole having a circumferential wall surface that is in close contact with the outer peripheral surface of the cylindrical member 10 is defined. .
  • the spacer 38 receives the end face of the one end portion 10a and the end face of the other end portion 10b of the cylindrical member 10 on both sides of the spacer 38 in a corresponding manner, and the end face of the one end portion 10a and the end face of the other end portion 10b are received.
  • a facing state in which the end faces face each other at a predetermined interval is realized and maintained.
  • the moving speed of the right roller 32 and the left roller 34 toward the cylindrical member 10 in the negative direction of the x axis is toward the negative direction of the x axis that the bar member 22 of the feed mechanism 20 applies to the cylindrical member 10. Is set equal to the moving speed of.
  • the first pressing mechanism 30 uses the right roller 32 and the left roller 34 as the end on the negative side of the x-axis of the tubular member 10 that has been fed toward the negative direction of the x-axis by the feed mechanism 20.
  • the first pressing mechanism 30 uses the right roller 32 and the left roller 34 as the end on the negative side of the x-axis of the tubular member 10 that has been fed toward the negative direction of the x-axis by the feed mechanism 20.
  • the cylindrical member 10 is molded so that the one end portion 10a and the other end portion 10b of the cylindrical member 10 are opposed to each other at regular intervals via the spacer 38. Is possible.
  • the right roller 32 and the left roller 34 send the tubular member 10 toward the welded portion 40 by their rotation operation, and the portion of the annular hole on the concave portion 32a side is the y-axis of the tubular member 10.
  • the outer peripheral portion of the positive direction side of the cylindrical member 10 is pressed toward the negative direction side of the y-axis, and the portion of the annular hole on the concave portion 34a side is the outer peripheral portion of the tubular member 10 on the negative direction side of the y-axis. Press on.
  • the molding by the first pressing mechanism 30 needs to be performed while the one end portion 10a and the other end portion 10b of the cylindrical member 10 are reliably opposed to each other via the spacer 38, and thus the annular shape formed by the recesses 32a and 34a.
  • the hole has an oval shape that can cover the outer peripheral surface of the tubular member 10 while facing the gaps spaced apart by a distance corresponding to the plate thickness of the spacer 38.
  • the welded portion 40 is fixed on a support plate 70 fixed on the floor (not shown), and is typically disposed facing the guide member 42 and a guide member 42 made of metal such as iron having sufficient strength.
  • the welding gun 44 typically performs plasma welding or laser welding, and a flat spacer 46 that is aligned with the spacer 38 in the x-axis direction and is fitted to the guide member 42.
  • the guide member 42 has a through hole 42a having a hole peripheral surface corresponding to the outer shape of the tubular member 10 having a shape in which the one end 10a and the other end 10b can be opposed to each other via the spacer 46, and the through hole 42a.
  • An opening 42c is formed.
  • the welding gun 44 faces the internal space of the through hole 42a through the gap 42b, and is fixedly disposed on a support member (not shown) fixed on the floor.
  • the spacer 46 has the same thickness as the spacer 38 and extends through the gap portion 42c while extending from the end portion of the gap portion 42c on the positive direction side of the x axis toward the negative direction side of the x axis. It protrudes into the internal space of the hole 42a.
  • the spacer 46 receives the end face of the one end portion 10a and the end face of the other end portion 10b of the cylindrical member 10 correspondingly while contacting the end face of the cylindrical member 10 on both sides of the spacer 38, and the end face and the other end of the one end portion 10a.
  • the through-hole 42a has a certain longitudinal cross-sectional shape that allows the cylindrical member 10 sent from the first pressing mechanism 30 to be smoothly introduced and maintained in the range where the gap 42c exists.
  • a cross-sectional shape corresponds to the shape of the annular hole formed by the recesses 32a and 34a in the right roller 32 and the left roller 34, and faces the straight portion having a length corresponding to the plate thickness of the spacer 46. It is preferable that it is oval so that the outer peripheral surface of the cylindrical member 10 can be covered.
  • the diameter of the through-hole 42a gradually decreases from the positive end of the x-axis of the gap portion 42c toward the negative direction of the x-axis. It becomes the value of the outer diameter of the cylindrical member 10 in a state where 10a and the other end 10b are in contact with each other.
  • the welded portion 40 is fed toward the negative direction side of the x-axis by the driving force of the feed mechanism 20, the right roller 32, and the left roller 34 through the right roller 32 and the left roller 34 of the first pressing mechanism 30.
  • the end of the cylindrical member 10 on the negative side of the x axis is introduced into the through hole 42 a so that the one end 10 a and the other end 10 b of the cylindrical member 10 are opposed to each other via the spacer 46. While maintaining this state, it is possible to position the end portion on the negative direction side of the x-axis below the gap portion 42b.
  • the welded portion 40 is welded to the one end portion 10a and the other end portion 10b, which are positioned below the gap portion 42b and in contact with each other, using the welding gun 44, thereby welding the welded portion. 12 can be formed.
  • the gap portion between the one end portion 10a and the other end portion 10b is narrowed and in contact with the diameter of the through hole 42a gradually decreasing toward the negative direction side of the x-axis.
  • the welded portion 12 between the one end portion 10a and the other end portion 10b obtained by welding in this way is located on the positive side of the z-axis of the tubular member 10.
  • the second pressing mechanism 50 includes an upper roller 52 and a lower roller 54 that face each other in the z-axis direction, and a support member 56 that supports the upper roller 52 and the lower roller 54, which are typically sufficient. It is made of metal such as iron with strength.
  • the upper roller 52 and the lower roller 54 are provided with recesses 52a and 54a, respectively, and the recesses 52a and 54a have partial annular holes having a shape corresponding to a predetermined cylindrical outer shape of the cylindrical member 10, respectively. Create in collaboration.
  • the support member 56 supports the upper roller 52 and the lower roller 54 corresponding to the upper part of the support member 56, and rotatably supports support shafts 56a and 56b each parallel to the y-axis.
  • the support shafts 56a and 56b are each connected to a drive source such as a motor (not shown), and are rotated in the opposite directions by the drive force from the drive source, thereby causing the upper roller 52 and the lower roller 54 to move to each other.
  • the shaft is supported so as to be rotatable in the opposite direction. Note that only one of the support shafts 56a and 56b may be connected to a drive source such as a motor (not shown).
  • the upper roller 52 and the lower roller 54 have circumferential wall surfaces that are in close contact with the outer peripheral surface of the tubular member 10 to which the one end 10a and the other end 10b are welded in cooperation with the recesses 52a and 54a.
  • the cylindrical member 10 can be rotated by the rotation of the support shafts 56a and 56b so that the cylindrical member 10 is formed into a predetermined cylindrical shape in a state where the partial annular hole portion is formed.
  • the moving speed of the upper roller 52 and the lower roller 54 in the negative direction of the x-axis applied to the cylindrical member 10 is determined by the rod member 22 of the feed mechanism 20 and the right roller 32 and the left roller of the first pressing mechanism 30. 34 is set equal to the moving speed in the negative direction of the x-axis applied to the tubular member 10.
  • the second pressing mechanism 50 passes through the welded portion 40 and is fed toward the negative direction side of the x axis by the feed mechanism 20 and the first pressing mechanism 30 in the negative direction of the x axis of the cylindrical member 10.
  • the end portion on the side is introduced between the upper roller 52 and the lower roller 54, and the outer roller 52 and the lower roller 54 are pressed by the partial annular hole formed by the concave portions 52 a and 54 a,
  • the lower roller 54 rotates in the reverse direction, the cylindrical member 10 is pulled out from the welded portion 40 by the rotating operation and sent to the third pressing mechanism 60, and the cylindrical member 10 is formed into a predetermined cylindrical shape.
  • the molding to be corrected can be applied to the tubular member 10.
  • the portion of the partial annular hole on the recess 52a side presses the portion on the positive side of the z-axis of the tubular member 10 toward the negative direction of the z-axis, and the partial annular hole recess 54a.
  • the portion on the side presses the portion of the tubular member 10 on the negative direction side of the z axis toward the positive direction side of the z axis.
  • the molding by the second pressing mechanism 50 is performed in order to correct the vertical cross-sectional shape of the cylindrical member 10 in consideration of the possibility that the longitudinal cross-sectional shape of the tubular member 10 is distorted by welding by the welded portion 40, and the concave portion 52a and
  • the partial annular hole formed by 54a is a portion of the welded portion 12 in which the shape of the tubular member 10 is distorted by such welding, that is, a portion on the positive side of the z-axis of the tubular member 10 and the tubular member 10 opposed thereto. It suffices to have a circumferential length that covers the negative direction side of the z-axis and can press the cylindrical member 10 in the vertical direction.
  • the third pressing mechanism 60 includes an upper roller 62 and a lower roller 64 that face each other in the z-axis direction, and a support member 66 that supports the upper roller 62 and the lower roller 64, and these are typically sufficient. It is made of metal such as iron with strength.
  • the upper roller 62 and the lower roller 64 are provided with recesses 62a and 64a, and the recesses 62a and 64a cooperate with a partial annular hole having a shape corresponding to a predetermined cylindrical outer shape of the tubular member 10. Define.
  • the support member 66 has upper shafts 62 and 66 corresponding to the upper roller 62 and the lower roller 64, and has support shafts 66a and 66b that are parallel to the y-axis, and is fixed on the floor (not shown).
  • the support plate 70 is fixed.
  • the upper roller 62 and the lower roller 64 are partially provided with circumferential wall surfaces such that the concave portions 62a and 64a cooperate to closely contact the outer peripheral surface of the tubular member 10 to which the one end portion 10a and the other end portion 10b are welded.
  • the cylindrical member 10 can be rotated around the support shaft 66a while being pressed with a force balanced in the vertical direction so that the central axis thereof is parallel to the y-axis. It is.
  • the upper roller 62 and the lower roller 64 may be configured to be driven by a driving source and rotated in opposite directions as necessary.
  • the third pressing mechanism 60 is sent toward the negative direction side of the x-axis by the feed mechanism 20, the first pressing mechanism 30, and the second pressing mechanism 40 via the second pressing mechanism 50.
  • the end of the cylindrical member 10 on the negative side of the x-axis is introduced into the recesses 62a and 64a of the upper roller 62 and the lower roller 64, so that the cylindrical member 10 is a partial annular hole formed by the recesses 62a and 64a.
  • the cylindrical member 10 is modified so that the central axis of the cylindrical member 10 is parallel to the x-axis. Can be applied.
  • the molding by the third pressing mechanism 60 is performed in order to correct the possibility in which the longitudinal shape of the tubular member 10 bends upward and downward due to welding by the welding portion 40.
  • the partial annular hole formed by the recesses 62a and 64a is such that the shape of the tubular member 10 becomes the starting point at which the shape of the tubular member 10 bends upward by such welding and the shape of the tubular member 10 is lowered by gravity. With a force that balances the tubular member 10 in the vertical direction, covering the portion facing the welded portion 12 that is the starting point of bending, that is, the portion on the positive direction side of the z-axis and the portion on the negative direction side of the z-axis. It is sufficient to have a circumference that can be pressed.
  • a rectangular steel plate of a predetermined size is subjected to a bending step, and a cylindrical member 10 is obtained that is rounded so that one end 10a and the other end 10b face each other on the positive side of the z axis.
  • the end of the direction side is brought into contact with the flange member 24 of the feed mechanism 20.
  • the cylindrical member 10 has the right roller 32 and the left of the first pressing mechanism 30 with the spacer 38 interposed between the one end 10a and the other end 10b from the end on the negative side of the x axis. It is continuously introduced between the rollers 34.
  • the cylindrical member 10 is fed by the feeding mechanism 20.
  • the right roller 32 and the left roller 34 are rotated in the opposite directions to send the cylindrical member 10, the one end 10 a and the other end 10 b are opposed to each other through the spacer 38 with respect to the cylindrical member 10. Molding is performed continuously.
  • the cylindrical member 10 is introduced into the through hole 42a of the welded portion 40 from the end portion on the negative direction side of the x axis with the spacer 46 interposed between the one end portion 10a and the other end portion 10b.
  • the spacer 46 interposed between the one end portion 10a and the other end portion 10b.
  • the cylindrical member 10 is continuously introduced between the upper roller 52 and the lower roller 54 of the second pressing mechanism 50 from the end portion on the negative direction side of the x axis.
  • the feed mechanism 20 and the first pressing mechanism 30 in a state where the cylindrical member 10 introduced between the upper roller 52 and the lower roller 54 is pressed by a partial annular hole formed by the recesses 52 a and 54 a, the feed mechanism 20 and the first pressing mechanism 30.
  • the upper roller 52 and the lower roller 54 rotate reversely to each other to feed the cylindrical member 10, so that Molding with a cylindrical shape, that is, molding for correcting welding distortion in the cross-sectional shape is continuously performed.
  • the cylindrical member 10 is continuously introduced between the upper roller 62 and the lower roller 64 of the third pressing mechanism 60 from the negative end portion of the x-axis.
  • the feed mechanism 20 and the first pressing mechanism in a state where the cylindrical member 10 introduced between the upper roller 62 and the lower roller 64 is pressed by a partial annular hole formed by the recess 62a and the recess 64a, the feed mechanism 20 and the first pressing mechanism.
  • the shaped member 10 is continuously molded so as to have a cylindrical shape linearly extending in the longitudinal direction, that is, molding for correcting deformation due to welding distortion and gravity in the longitudinal direction.
  • the end of the cylindrical member 10 on the positive side of the x axis is led out between the upper roller 62 and the lower roller 64 of the third pressing mechanism 60.
  • the driving of the collar member 24 of the feed mechanism 20, the right roller 32 and the left roller 34 of the first pressing mechanism 30, and the upper roller 52 and the lower roller 54 of the second pressing mechanism 40 is stopped, and the cylindrical member 10 is stopped.
  • the end of the x-axis in the positive direction side is released from the flange member 24 of the feed mechanism 20 to obtain the tubular member 100 after welding.
  • the cylindrical member 10 obtained by forming the plate member into a cylindrical shape so that the first end portion 10a and the second end portion 10b of the plate member face each other.
  • a first feeding mechanism and a cylindrical member 10 fed by the feeding mechanism 20 are pressed so that the first end portion 10a and the second end portion 10b face each other via the first spacer 38.
  • the cylindrical member 10 pressed by the first pressing mechanism 30 while being fed by the pressing mechanism 30, the welding gun 44, and the feeding mechanism 20 enters the inside thereof, and the first end 10a and the second end A welded portion 40 having a guide member 42 that guides toward the welding gun 44 while holding the tubular member 10 so that the portion 10b is maintained facing the second spacer 46.
  • the cylindrical member 10 can be smoothly and continuously introduced into the welded portion 40 in a state where the opposed state of the cylindrical member 10 is maintained, and both end portions 10a and 10b of the cylindrical member 10 that are in contact with each other can be continuously welded. it can.
  • Each of the first pressing mechanisms 30 correspondingly presses the intermediate portion of the cylindrical member 10 on the first end portion 10a side and the intermediate portion of the cylindrical member 10 on the second end portion 10b side.
  • the guide member 42 has a through hole 42a through which the cylindrical member 10 fed by the feeding mechanism 20 can be inserted, and a gap portion 42b opened in the through hole 42a, and the welding gun 44 has a gap portion 42b.
  • the first end 10a and the second end 10b that are in contact with each other face the opposite end portions 10a and 10b of the cylindrical member 10 while maintaining the state in which they are in contact with each other. Both end portions 10a and 10b can be reliably welded.
  • a second pressing mechanism 50 that presses the tubular member 10 welded to the first end portion 10a and the second end portion 10b by the welding portion 40 while being fed by the feeding mechanism 20 is provided.
  • the second pressing mechanism 50 includes the welded first and second end portions 10a and 10b of the tubular member 10, and the welded first and second end portions 10a and 10b of the tubular member 10.
  • a third pressing mechanism 60 that presses the cylindrical member 10 that has passed through the second pressing mechanism 50 while being fed by the feeding mechanism 20 is provided, and the third pressing mechanism 60 is welded to the cylindrical member 10.
  • Each of the first end portion 10a and the second end portion 10b, and the welded first end portion and the portion facing the second end portion of the cylindrical member correspondingly pressed to each other are rotatable.
  • cylindrical member 10 has been described as having a cylindrical shape, but, of course, may have another rectangular tube shape.
  • mag welding, MIG welding, or the like can be used in addition to plasma welding or laser welding.
  • the right roller 32 and the left roller 34 of the first pressing mechanism 30 are driven, and the first The driving of the upper roller 52 and the lower roller 54 of the second pressing mechanism 40 may be omitted.
  • the second pressing mechanism 50 and the third pressing mechanism 60 may be omitted.
  • the present invention is not limited to the above-described embodiment in terms of the shape, arrangement, number, etc. of the members, and does not depart from the gist of the invention, such as appropriately replacing its constituent elements with those having the same operational effects. Of course, it can be appropriately changed within the range.
  • the cylindrical members are smoothly and continuously introduced into the welded portion with the opposite ends of the cylindrical members facing each other, and the cylindrical members are brought into contact with each other.
  • a welding apparatus capable of continuously welding both end portions, it can be widely applied to the field of strength members of a vehicle body of a moving body such as a vehicle because of its general-purpose universal character. Expected.

Abstract

This welding apparatus is provided with: a feeding mechanism (20) for feeding a cylindrical member (10) obtained by molding a plate member into a cylindrical shape in such a manner that a first end section (10a) and a second end section (10b) of the plate member face each other; a first pressing mechanism (30) that presses the cylindrical member (10) fed by the feeding mechanism (20) in such a manner that the first end section (10a) and the second end section (10b) face each other with a first spacer (38) therebetween; and a welding part (40) that is penetrated by a welding gun (44) and the cylindrical member (10), which is pressed by the first pressing mechanism (30) while being fed by the feeding mechanism (20), and has a guide member (42) that guides the cylindrical member (10) toward the welding gun (44) while holding the cylindrical member (10) in such a manner that the first end section (10a) and the second end section (10b) are maintained in a facing state with a second spacer (46) therebetween. Thus, the cylindrical member (10) is smoothly and continuously introduced to the welding part (40) while the facing state of the end sections of the cylindrical member, which are facing each other, is maintained, thereby enabling the end sections of the cylindrical member (10), which are in contact with one another, to be continuously welded.

Description

溶接装置Welding equipment
 本発明は、溶接装置に関し、特に、自動車等の強度部品である筒状部材を得るための溶接装置に関するものである。 The present invention relates to a welding apparatus, and more particularly to a welding apparatus for obtaining a cylindrical member that is a strength part of an automobile or the like.
 近年、自動車等の強度部品として、高強度であって種々の成形を行うことができる鉄製等のパイプ部材が多数用いられるようになっている。 In recent years, a large number of pipe members made of iron or the like that can be variously molded with high strength have been used as strength parts for automobiles and the like.
 かかるパイプ部材は、商品としても流通しているが、コストダウンをより図る場合や、材質やサイズの設定自由度をより高める場合には、鋼板を購入して所望の構成のパイプ部材に加工した方が望ましい。そのためには、購入した鋼板を筒状部材に成形した後で、その対向する両端部を溶接する必要性が生じる。 Such pipe members are also distributed as commercial products. However, in order to further reduce costs or increase the degree of freedom in setting the material and size, steel plates were purchased and processed into pipe members with a desired configuration. Is preferable. For that purpose, after the purchased steel plate is formed into a cylindrical member, it is necessary to weld the opposite ends.
 かかる状況下で、特許文献1は、板体を予め円筒状に曲げ加工したワークWの両端縁の突き合わせ部を溶接して円筒体を成形する溶接方法に関し、ワークWの突き合わせ部の隙間を、複数の挿入刃21により内側面に裏ビードができるだけの所定間隔に保持した状態で、ワークWをガイド部材4の挿通孔を通して溶接トーチ1に向かって送り込み、かかる隙間をミグ溶接やマグ溶接する構成を開示する。 Under such circumstances, Patent Document 1 relates to a welding method for forming a cylindrical body by welding abutting portions at both ends of a workpiece W obtained by bending a plate body into a cylindrical shape in advance. A structure in which the workpiece W is fed toward the welding torch 1 through the insertion hole of the guide member 4 while the back beads are held on the inner surface by a plurality of insertion blades 21 as much as possible at a predetermined interval, and the gap is subjected to MIG welding or MAG welding. Is disclosed.
特開2003-80370号公報JP 2003-80370 A
 しかしながら、本発明者の検討によれば、特許文献1の構成においては、ワークWをガイド部材4の挿通孔に通す前に、ワークWの突き合わせ部の隙間を、複数の挿入刃21により内側面に裏ビードができるだけの所定間隔に保持する必要があり、溶接装置としては煩雑なものとなり、改善の余地がある。 However, according to the study of the present inventor, in the configuration of Patent Document 1, before the workpiece W is passed through the insertion hole of the guide member 4, the gap between the butted portions of the workpiece W is formed by the plurality of insertion blades 21 on the inner surface. In addition, it is necessary to hold the back beads at a predetermined interval as much as possible, and the welding apparatus becomes complicated and there is room for improvement.
 更に、本発明者の検討によれば、特許文献1の構成は、ミグ溶接やマグ溶接する構成になっており、その他の溶接方法に適用する場合の具体的な構成を何等開示等もしていないものである。 Further, according to the study of the present inventor, the configuration of Patent Document 1 is a configuration for MIG welding or MAG welding, and does not disclose any specific configuration when applied to other welding methods. Is.
 本発明は、以上の検討を経てなされたもので、筒状部材の互いに対向した両端部を対向させた状態で、筒状部材をスムースかつ連続的に溶接部に導入して、筒状部材の互いに当接された両端部を連続的に溶接することができる溶接装置を提供することを目的とする。 The present invention has been made through the above-described studies. The cylindrical member is smoothly and continuously introduced into the welded portion with the opposite ends of the cylindrical member facing each other. It is an object of the present invention to provide a welding apparatus capable of continuously welding both end portions in contact with each other.
 以上の目的を達成すべく、本発明の第1の局面における溶接装置は、板部材の第1の端部と第2の端部とが対向するように前記板部材を筒状に成形して得られた筒状部材を送る送り機構と、前記送り機構で送られている前記筒状部材を、前記第1の端部と前記第2の端部とが第1のスペーサを介して対向するように押圧する第1の押圧機構と、溶接ガン、及び前記送り機構で送られながら前記第1の押圧機構で押圧された前記筒状部材がその内部に侵入し、前記第1の端部と前記第2の端部とが第2のスペーサを介して対向された状態に維持されるように前記筒状部材を保持しながら前記溶接ガンに向かってガイドするガイド部材を有する溶接部と、を備える。 In order to achieve the above object, the welding apparatus according to the first aspect of the present invention forms the plate member into a cylindrical shape so that the first end and the second end of the plate member face each other. The first end portion and the second end portion of the feed mechanism that feeds the obtained tubular member and the tubular member that is fed by the feed mechanism are opposed to each other via a first spacer. The first pressing mechanism that presses the welding member, and the cylindrical member pressed by the first pressing mechanism while being fed by the welding gun and the feeding mechanism enters the inside, and the first end portion A welded portion having a guide member that guides toward the welding gun while holding the cylindrical member so that the second end portion is maintained in a state of being opposed to the second end portion. Prepare.
 また、本発明は、かかる第1の局面に加え、前記第1の押圧機構は、前記筒状部材における前記第1の端部側の中間部分と前記筒状部材における前記第2の端部側の中間部分とを対応して押圧する各々が回転自在な一対のローラを有することを第2の局面とする。 In addition to the first aspect, the present invention provides that the first pressing mechanism includes an intermediate portion on the first end side of the cylindrical member and the second end side of the cylindrical member. The second aspect is to have a pair of rotatable rollers, each of which presses correspondingly to the intermediate portion.
 また、本発明は、かかる第2の局面に加え、前記ガイド部材は、前記送り機構で送られている前記筒状部材を挿通自在な貫通孔、及び前記貫通孔に開けられた間隙部を有し、前記溶接ガンは、前記間隙部から当接された状態の前記第1の端部と前記第2の端部に臨むことを第3の局面とする。 Further, according to the present invention, in addition to the second aspect, the guide member has a through-hole through which the cylindrical member fed by the feeding mechanism can be inserted, and a gap portion opened in the through-hole. The third aspect is that the welding gun faces the first end and the second end in a state of being in contact with the gap.
 また、本発明は、かかる第2又は3の局面に加え、更に、前記送り機構で送られながら前記溶接部で前記第1の端部と前記第2の端部とが溶接された前記筒状部材を押圧する第2の押圧機構を備え、前記第2の押圧機構は、前記筒状部材における溶接された前記第1の端部及び前記第2の端部と、前記筒状部材における前記溶接された前記第1の端部と前記第2の端部に対向する部分と、を対応して押圧する各々が回転自在な一対のローラを有することを第4の局面とする。 In addition to the second or third aspect, the present invention further includes the cylindrical shape in which the first end portion and the second end portion are welded by the welding portion while being fed by the feeding mechanism. A second pressing mechanism that presses the member, wherein the second pressing mechanism includes the welded first end and second end of the tubular member, and the welding of the tubular member. A fourth aspect is that each of the first end portion and the portion facing the second end portion that presses correspondingly has a pair of rotatable rollers.
 また、本発明は、かかる第4の局面に加え、更に、前記送り機構で送られながら第2の押圧機構を経た前記筒状部材を押圧する第3の押圧機構を備え、前記第3の押圧機構は、前記筒状部材における溶接された前記第1の端部及び前記第2の端部と、前記筒状部材における前記溶接された前記第1の端部と前記第2の端部に対向する部分と、を対応して押圧する各々が回転自在な一対のローラを有することを第5の局面とする。 In addition to the fourth aspect, the present invention further includes a third pressing mechanism that presses the cylindrical member that has passed through the second pressing mechanism while being fed by the feeding mechanism, and the third pressing mechanism. The mechanism is opposed to the welded first end and the second end of the tubular member, and the welded first end and the second end of the tubular member. The fifth aspect is to have a pair of freely rotatable rollers, each of which presses correspondingly.
 本発明の第1の局面における構成によれば、板部材の第1の端部と第2の端部とが対向するように板部材を筒状に成形して得られた筒状部材を送る送り機構と、送り機構で送られている筒状部材を、第1の端部と第2の端部とが第1のスペーサを介して対向するように押圧する第1の押圧機構と、溶接ガン、及び送り機構で送られながら第1の押圧機構で押圧された筒状部材がその内部に侵入し、第1の端部と第2の端部とが第2のスペーサを介して対向された状態に維持されるように筒状部材を保持しながら溶接ガンに向かってガイドするガイド部材を有する溶接部と、を備えることにより、筒状部材の互いに対向した両端部の対向状態を維持した状態で、筒状部材をスムースかつ連続的に溶接部に導入して、筒状部材の互いに当接された両端部を連続的に溶接することができる。 According to the configuration of the first aspect of the present invention, the cylindrical member obtained by forming the plate member into a cylindrical shape so that the first end and the second end of the plate member face each other is sent. A feeding mechanism, a first pressing mechanism that presses the cylindrical member fed by the feeding mechanism so that the first end and the second end face each other via the first spacer, and welding The cylindrical member pressed by the first pressing mechanism while being fed by the gun and the feeding mechanism enters the inside thereof, and the first end and the second end are opposed to each other via the second spacer. And a welded portion having a guide member that guides toward the welding gun while holding the tubular member so as to be maintained in a maintained state, thereby maintaining the opposed state of the opposite ends of the tubular member. In this state, the cylindrical members are smoothly and continuously introduced into the welded portion, and the cylindrical members are brought into contact with each other. It can be welded both end portions continuously.
 また、本発明の第2の局面における構成によれば、第1の押圧機構が、筒状部材における第1の端部側の中間部分と筒状部材における第2の端部側の中間部分とを対応して押圧する各々が回転自在な一対のローラを有することにより、筒状部材の互いに対向した両端部を確実に対向状態のまま維持させることができる。 Further, according to the configuration in the second aspect of the present invention, the first pressing mechanism includes an intermediate portion on the first end side of the cylindrical member and an intermediate portion on the second end side of the cylindrical member; By having a pair of rotatable rollers that respectively press the corresponding members, the opposite ends of the cylindrical member can be reliably maintained in the opposed state.
 また、本発明の第3局面における構成によれば、ガイド部材が、送り機構で送られている筒状部材を挿通自在な貫通孔、及び貫通孔に開けられた間隙部を有し、溶接ガンが、間隙部から当接された状態の第1の端部と第2の端部に臨むことにより、筒状部材の互いに対向した両端部を当接させた状態を実現しながら、かかる両端部を確実に溶接することができる。 According to the configuration of the third aspect of the present invention, the guide member has a through-hole through which the cylindrical member fed by the feeding mechanism can be inserted, and a gap portion opened in the through-hole, and a welding gun However, by facing the first end and the second end that are in contact with each other from the gap, the both ends of the cylindrical member are brought into contact with each other while realizing the state in which the opposite ends are in contact with each other. Can be reliably welded.
 また、本発明の第4の局面における構成によれば、更に、送り機構で送られながら溶接部で第1の端部と第2の端部とが溶接された筒状部材を押圧する第2の押圧機構を備え、第2の押圧機構が、筒状部材における溶接された第1の端部及び第2の端部と、筒状部材における溶接された第1の端部と第2の端部に対向する部分と、を対応して押圧する各々が回転自在な一対のローラを有することにより、溶接された筒状部材の断面形状における形状歪みを確実に修正することができる。 Further, according to the configuration of the fourth aspect of the present invention, the second member presses the tubular member welded with the first end and the second end at the weld while being fed by the feed mechanism. The second pressing mechanism includes a welded first end and second end of the tubular member, and a welded first end and second end of the tubular member. By having a pair of rotatable rollers that respectively press the corresponding portions, the shape distortion in the cross-sectional shape of the welded cylindrical member can be reliably corrected.
 また、本発明の第5の局面における構成によれば、更に、送り機構で送られながら第2の押圧機構を経た筒状部材を押圧する第3の押圧機構を備え、前記第3の押圧機構は、前記筒状部材における溶接された前記第1の端部及び前記第2の端部と、筒状部材における溶接された第1の端部と第2の端部に対向する部分と、を対応して押圧する各々が回転自在な一対のローラを有することにより、溶接された筒状部材の長手方向における形状歪みを確実に修正することができる。 Moreover, according to the configuration in the fifth aspect of the present invention, the third pressing mechanism further includes a third pressing mechanism that presses the cylindrical member that has passed through the second pressing mechanism while being fed by the feeding mechanism. The welded first end and the second end of the tubular member, and the welded first end and the second end of the tubular member facing the second end, By having a pair of rotatable rollers that each press correspondingly, the shape distortion in the longitudinal direction of the welded cylindrical member can be reliably corrected.
本発明の実施形態における溶接装置を示す側面図である。It is a side view which shows the welding apparatus in embodiment of this invention. 図1のA-A断面図である。FIG. 2 is a cross-sectional view taken along the line AA in FIG. 図1のB1-B1断面図である。It is B1-B1 sectional drawing of FIG. 図1のB2-B2断面図である。FIG. 2 is a B2-B2 cross-sectional view of FIG. 1. 図1のC-C断面図である。FIG. 2 is a cross-sectional view taken along the line CC of FIG. 図1のD-D断面図である。FIG. 2 is a DD sectional view of FIG. 1. 本実施形態における溶接装置で用いられる両端部が当接されていない状態の筒状部材を示す上面図である。It is a top view which shows the cylindrical member of the state which the both ends used with the welding apparatus in this embodiment are not contact | abutting. 図4Aをx軸の負方向に見た正面図である。It is the front view which looked at FIG. 4A to the negative direction of the x-axis. 本実施形態における溶接装置で用いられる両端部が溶接された状態の筒状部材を示す上面図である。It is a top view which shows the cylindrical member of the state by which the both ends used with the welding apparatus in this embodiment were welded. 図4Cをx軸の負方向に見た正面図である。It is the front view which looked at FIG. 4C to the negative direction of the x-axis.
 以下、図面を適宜参照して、本発明の実施形態における溶接装置につき詳細に説明する。なお、図中、x軸、y軸及びz軸は、3軸直交座標系を成す。また、x軸の方向が筒状部材の長手方向であり、z軸の正方向が筒状部材の上方向であるとする。 Hereinafter, a welding apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the figure, the x-axis, y-axis, and z-axis form a three-axis orthogonal coordinate system. The x-axis direction is the longitudinal direction of the cylindrical member, and the positive z-axis direction is the upward direction of the cylindrical member.
 図1は、本実施形態における溶接装置の側面図である。図2Aから図3Bは、本実施形態における溶接装置の縦断面図であり、図2Aは、図1のA-A断面図、図2Bは、図1のB1-B1断面図、図2Cは、図1のB2-B2断面図である。図3は、本実施形態における溶接装置の縦断面図であり、図3Aは、図1のC-C断面図、及び図3Bは、図1のD-D断面図である。図4Aから図4Dは、本実施形態における溶接装置に適用される筒状部材の構造を示す図であり、図4Aは、両端部が当接されていない状態の筒状部材の上面図、図4Bは、図4Aをx軸の負方向に見た正面図、図4Cは、両端部が溶接された状態の筒状部材の上面図、図4Dは、図4Cをx軸の負方向に見た正面図である。 FIG. 1 is a side view of the welding apparatus in the present embodiment. 2A to 3B are longitudinal sectional views of the welding apparatus according to the present embodiment. FIG. 2A is a sectional view taken along the line AA in FIG. 1, FIG. 2B is a sectional view taken along the line B1-B1 in FIG. FIG. 2 is a B2-B2 cross-sectional view of FIG. 1. 3 is a longitudinal sectional view of the welding apparatus in the present embodiment, FIG. 3A is a sectional view taken along the line CC in FIG. 1, and FIG. 3B is a sectional view taken along the line DD in FIG. 4A to 4D are views showing a structure of a cylindrical member applied to the welding apparatus in the present embodiment, and FIG. 4A is a top view of the cylindrical member in a state where both ends are not in contact with each other. 4B is a front view of FIG. 4A as viewed in the negative direction of the x-axis, FIG. 4C is a top view of the tubular member with both ends welded, and FIG. 4D is a view of FIG. 4C as viewed in the negative direction of the x-axis. FIG.
 図1から図4Dに示すように、溶接装置1は、一端部10a及び他端部10bが、筒状部材10のz軸の正方向側において、y軸方向で互いに対向するように丸められた典型的には鉄等の金属製の筒状部材10における一端部10a及び他端部10bを溶接するものである。かかる溶接装置1は、筒状部材10を送る送り機構20と、一連の工程の最初の工程部である第1の押圧機構30と、第1の押圧機構30の下流の工程部である溶接部40と、溶接部40の下流の工程部である第2の押圧機構50と、第2の押圧機構50の下流の工程部である第3の押圧機構60と、を備える。なお、筒状部材10においては、一端部10a及び他端部10bは、筒状部材10のz軸の正方向側で対向して位置するものとする。 As shown in FIG. 1 to FIG. 4D, the welding apparatus 1 is rounded so that the one end portion 10 a and the other end portion 10 b face each other in the y-axis direction on the positive direction side of the z-axis of the tubular member 10. Typically, one end 10a and the other end 10b of the cylindrical member 10 made of metal such as iron are welded. The welding apparatus 1 includes a feed mechanism 20 that feeds the cylindrical member 10, a first pressing mechanism 30 that is a first process part of a series of processes, and a welding part that is a process part downstream of the first pressing mechanism 30. 40, a second pressing mechanism 50 that is a process part downstream of the welded part 40, and a third pressing mechanism 60 that is a process part downstream of the second pressing mechanism 50. In the tubular member 10, the one end portion 10 a and the other end portion 10 b are positioned to face each other on the positive direction side of the tubular member 10 in the z axis.
 具体的には、送り機構20は、棒部材22と、棒部材22に固設された鍔部材24と、を備え、これらは典型的には充分な強度を有する鉄等の金属製である。棒部材22は、図示を省略するモータ等の駆動源に接続され、駆動源からの動力でx軸方向に移動自在である。また、鍔部材24は、筒状部材10のx軸の正方向側の端部に当接自在である。つまり、送り機構20は、駆動源からの動力で棒部材22及び鍔部材24がx軸の負方向側に向けて移動される際には、鍔部材24に対してx軸の正方向側の端部が当接された筒状部材10を、x軸の負方向に移動して送ることが可能である。 Specifically, the feed mechanism 20 includes a bar member 22 and a flange member 24 fixed to the bar member 22, which are typically made of metal such as iron having sufficient strength. The rod member 22 is connected to a drive source such as a motor (not shown), and is movable in the x-axis direction with power from the drive source. Further, the flange member 24 can freely contact the end of the cylindrical member 10 on the positive side of the x axis. That is, when the bar member 22 and the flange member 24 are moved toward the negative direction side of the x axis by the power from the drive source, the feed mechanism 20 is located on the positive side of the x axis with respect to the flange member 24. The cylindrical member 10 with which the end is in contact can be moved in the negative direction of the x axis and sent.
 第1の押圧機構30は、互いにy軸方向で対向する右ローラ32及び左ローラ34と、右ローラ32及び左ローラ34を支持する支持部材36と、右ローラ32及び左ローラ34間に配置される平板状のスペーサ38と、を備え、これらは典型的には充分な強度を有する鉄等の金属製である。右ローラ32及び左ローラ34には各々凹部32a及び34aが対応して設けられ、凹部32a及び34aは、スペーサ38を挟んで、筒状部材10に周方向の所定の締め代を与える壁面形状を有する環状孔部を、協働して画成する。また、支持部材36は、その上部に右ローラ32及び左ローラ34を対応して軸支して、各々がz軸に平行である支持軸36a及び36bを回動自在に装着すると共に、図示を省略する床上に固定された支持板70上に固設される。支持軸36a及び36bは、各々、図示を省略するモータ等の駆動源に接続され、駆動源からの駆動力でそれらが互いに逆方向に回転されることにより、右ローラ32及び左ローラ34を互いに逆方向に回動自在に対応して軸支する。また、スペーサ38は、平板状であり、右ローラ32及び左ローラ34間に立設して配置されるように、床上に固定された図示を省略する支持部材に固設される。かかるスペーサ38の存在により、右ローラ32及び左ローラ34は、スペーサ38の板厚に相当する距離だけy軸方向に離間される。なお、支持軸36a及び36bに関しては、それらの一方のみが、図示を省略するモータ等の駆動源に接続されていてもよい。 The first pressing mechanism 30 is disposed between the right roller 32 and the left roller 34 facing each other in the y-axis direction, the support member 36 that supports the right roller 32 and the left roller 34, and the right roller 32 and the left roller 34. Plate-like spacers 38, which are typically made of metal such as iron having sufficient strength. The right roller 32 and the left roller 34 are respectively provided with recesses 32a and 34a, and the recesses 32a and 34a have a wall shape that gives a predetermined margin in the circumferential direction to the tubular member 10 with the spacer 38 interposed therebetween. The annular hole having is defined in cooperation. The support member 36 has a right roller 32 and a left roller 34 pivotally supported on the upper portion thereof, and is rotatably mounted with support shafts 36a and 36b each parallel to the z-axis. It is fixed on the support plate 70 fixed on the floor to be omitted. Each of the support shafts 36a and 36b is connected to a drive source such as a motor (not shown), and is rotated in the opposite direction by the drive force from the drive source, so that the right roller 32 and the left roller 34 are mutually connected. The shaft is supported so as to be rotatable in the opposite direction. The spacer 38 has a flat plate shape, and is fixed to a support member (not shown) fixed on the floor so as to be erected between the right roller 32 and the left roller 34. Due to the presence of the spacer 38, the right roller 32 and the left roller 34 are separated in the y-axis direction by a distance corresponding to the plate thickness of the spacer 38. Note that only one of the support shafts 36a and 36b may be connected to a drive source such as a motor (not shown).
 ここで、右ローラ32及び左ローラ34は、凹部32a及び34aが協働して、筒状部材10の一端部10a及び他端部10bを、スペーサ38を挟んでy軸方向で互いに対向させると共に、かかる筒状部材10の外周面に密着するような円周状壁面を有する環状孔部を画成した状態で、駆動源に接続された支持軸36a及び36bの回転によって各々回動自在である。かかるスペーサ38は、その両面で筒状部材10の一端部10aの端面及び他端部10bの端面を各々面当たりさせながら対応して受け止め、かかる一端部10aの端面及び他端部10bの端面が所定の間隔でそれらの端面同士が対向した対向状態を実現して維持する。また、右ローラ32及び左ローラ34が筒状部材10に与えるx軸の負方向側への移動速さは、送り機構20の棒部材22が筒状部材10に与えるx軸の負方向側への移動速さと等しく設定される。 Here, in the right roller 32 and the left roller 34, the concave portions 32a and 34a cooperate to make the one end 10a and the other end 10b of the cylindrical member 10 face each other in the y-axis direction with the spacer 38 interposed therebetween. Each of the support members 36a and 36b connected to the drive source can be rotated by rotating the support shafts 36a and 36b in a state in which an annular hole having a circumferential wall surface that is in close contact with the outer peripheral surface of the cylindrical member 10 is defined. . The spacer 38 receives the end face of the one end portion 10a and the end face of the other end portion 10b of the cylindrical member 10 on both sides of the spacer 38 in a corresponding manner, and the end face of the one end portion 10a and the end face of the other end portion 10b are received. A facing state in which the end faces face each other at a predetermined interval is realized and maintained. Further, the moving speed of the right roller 32 and the left roller 34 toward the cylindrical member 10 in the negative direction of the x axis is toward the negative direction of the x axis that the bar member 22 of the feed mechanism 20 applies to the cylindrical member 10. Is set equal to the moving speed of.
 つまり、第1の押圧機構30は、送り機構20でx軸の負方向側に向けて送られてきた筒状部材10のx軸の負方向側の端部を、右ローラ32及び左ローラ34の間に導入して、筒状部材10の一端部10aがスペーサ38の一面に当接し、かつ筒状部材10の他端部10bがスペーサ38の他面に当接した状態で、筒状部材10の一端部10a及び他端部10bを、スペーサ38を介してy軸方向で互いに対向させながら、筒状部材10の外周面を凹部32a及び34aが成す環状孔部で押圧した状態で、右ローラ32及び左ローラ34が互いに逆回転することにより、筒状部材10の一端部10a及び他端部10bを、スペーサ38を介して一定間隔で互いに対向させる成形を、筒状部材10に施すことが可能である。この際、右ローラ32及び左ローラ34は、それらの回動動作により筒状部材10を溶接部40に向けて送ると共に、環状孔部の凹部32a側の部分は、筒状部材10のy軸の正方向側の外周部分をy軸の負方向側に押圧し、環状孔部の凹部34a側の部分は、筒状部材10のy軸の負方向側の外周部分をy軸の正方向側に押圧する。かかる第1の押圧機構30による成形は、筒状部材10の一端部10a及び他端部10bを、スペーサ38を介して互いに確実に対向させながら行う必要があるから、凹部32a及び34aが成す環状孔部は、スペーサ38の板厚に相当する距離だけ離間した間隙部を対向して有しながら、筒状部材10の外周面を覆うことができるような長円状であることが好ましい。 In other words, the first pressing mechanism 30 uses the right roller 32 and the left roller 34 as the end on the negative side of the x-axis of the tubular member 10 that has been fed toward the negative direction of the x-axis by the feed mechanism 20. In the state where one end portion 10a of the cylindrical member 10 is in contact with one surface of the spacer 38 and the other end portion 10b of the cylindrical member 10 is in contact with the other surface of the spacer 38, 10 with one end 10a and the other end 10b facing each other in the y-axis direction via the spacer 38, while pressing the outer peripheral surface of the tubular member 10 with the annular hole formed by the recesses 32a and 34a. When the roller 32 and the left roller 34 are rotated in the opposite directions, the cylindrical member 10 is molded so that the one end portion 10a and the other end portion 10b of the cylindrical member 10 are opposed to each other at regular intervals via the spacer 38. Is possible. At this time, the right roller 32 and the left roller 34 send the tubular member 10 toward the welded portion 40 by their rotation operation, and the portion of the annular hole on the concave portion 32a side is the y-axis of the tubular member 10. The outer peripheral portion of the positive direction side of the cylindrical member 10 is pressed toward the negative direction side of the y-axis, and the portion of the annular hole on the concave portion 34a side is the outer peripheral portion of the tubular member 10 on the negative direction side of the y-axis. Press on. The molding by the first pressing mechanism 30 needs to be performed while the one end portion 10a and the other end portion 10b of the cylindrical member 10 are reliably opposed to each other via the spacer 38, and thus the annular shape formed by the recesses 32a and 34a. It is preferable that the hole has an oval shape that can cover the outer peripheral surface of the tubular member 10 while facing the gaps spaced apart by a distance corresponding to the plate thickness of the spacer 38.
 溶接部40は、図示を省略する床上に固定された支持板70上に固設され、典型的に充分な強度を有する鉄等の金属製のガイド部材42と、ガイド部材42に対向して配置され典型的にはプラズマ溶接やレーザ溶接を行う溶接ガン44と、スペーサ38とx軸方向で整列してガイド部材42に嵌装される平板状のスペーサ46と、を有する。ガイド部材42には、一端部10a及び他端部10bがスペーサ46を介して互いに対向自在な形状を有した筒状部材10の外形に対応した孔周面を有する貫通孔42aと、貫通孔42aの上部においてガイド部材42の上壁部を一部開放する間隙部42bと、間隙部42bよりも第1の押圧機構30側で、貫通孔42aの上部においてガイド部材42の上壁部を一部開放する間隙部42cと、が形成される。 The welded portion 40 is fixed on a support plate 70 fixed on the floor (not shown), and is typically disposed facing the guide member 42 and a guide member 42 made of metal such as iron having sufficient strength. The welding gun 44 typically performs plasma welding or laser welding, and a flat spacer 46 that is aligned with the spacer 38 in the x-axis direction and is fitted to the guide member 42. The guide member 42 has a through hole 42a having a hole peripheral surface corresponding to the outer shape of the tubular member 10 having a shape in which the one end 10a and the other end 10b can be opposed to each other via the spacer 46, and the through hole 42a. A gap part 42b that partially opens the upper wall part of the guide member 42 in the upper part of the guide member 42, and a part of the upper wall part of the guide member 42 in the upper part of the through hole 42a on the first pressing mechanism 30 side than the gap part 42b. An opening 42c is formed.
 ここで、溶接ガン44は、間隙部42bを介して貫通孔42aの内部空間に臨んで、床上に固定された図示を省略する支持部材に固設されて配置される。また、スペーサ46は、スペーサ38と同じ板厚を有し、間隙部42cのx軸の正方向側の端部からx軸の負方向側に向かって延在しながら間隙部42cを介して貫通孔42aの内部空間に突出して配置される。かかるスペーサ46は、スペーサ38に引き続き、その両面で筒状部材10の一端部10aの端面及び他端部10bの端面を各々面当たりさせながら対応して受け止め、かかる一端部10aの端面及び他端部10bの端面がスペーサ38で設定されたものと同じ所定の間隔でそれらの端面同士が対向した対向状態を実現して維持する。また、貫通孔42aは、間隙部42cが存在する範囲では、第1の押圧機構30から送られた筒状部材10をスムースに導入してその形状を維持できるような一定の縦断面形状を有する。具体的には、かかる断面形状は、右ローラ32及び左ローラ34における凹部32a及び34aが成す環状孔部の形状に対応して、スペーサ46の板厚に相当した長さの直線部を対向して有しながら、筒状部材10の外周面を覆うことができるような長円状であることが好ましい。かかる貫通孔42aでは、その径が間隙部42cのx軸の正方向の端部からx軸の負方向側に向かうに連れて漸減して、その径は、溶接ガン44の直下では、一端部10a及び他端部10bが当接された状態の筒状部材10の外径の値となる。 Here, the welding gun 44 faces the internal space of the through hole 42a through the gap 42b, and is fixedly disposed on a support member (not shown) fixed on the floor. The spacer 46 has the same thickness as the spacer 38 and extends through the gap portion 42c while extending from the end portion of the gap portion 42c on the positive direction side of the x axis toward the negative direction side of the x axis. It protrudes into the internal space of the hole 42a. The spacer 46 receives the end face of the one end portion 10a and the end face of the other end portion 10b of the cylindrical member 10 correspondingly while contacting the end face of the cylindrical member 10 on both sides of the spacer 38, and the end face and the other end of the one end portion 10a. The end face of the portion 10b is realized and maintained in an opposed state in which the end faces face each other at the same predetermined interval as that set by the spacer 38. Further, the through-hole 42a has a certain longitudinal cross-sectional shape that allows the cylindrical member 10 sent from the first pressing mechanism 30 to be smoothly introduced and maintained in the range where the gap 42c exists. . Specifically, such a cross-sectional shape corresponds to the shape of the annular hole formed by the recesses 32a and 34a in the right roller 32 and the left roller 34, and faces the straight portion having a length corresponding to the plate thickness of the spacer 46. It is preferable that it is oval so that the outer peripheral surface of the cylindrical member 10 can be covered. The diameter of the through-hole 42a gradually decreases from the positive end of the x-axis of the gap portion 42c toward the negative direction of the x-axis. It becomes the value of the outer diameter of the cylindrical member 10 in a state where 10a and the other end 10b are in contact with each other.
 つまり、溶接部40は、第1の押圧機構30の右ローラ32及び左ローラ34を経て、送り機構20、右ローラ32及び左ローラ34による駆動力でx軸の負方向側に向けて送られてきた筒状部材10のx軸の負方向側の端部を、貫通孔42a内に導入して、筒状部材10の一端部10a及び他端部10bを、スペーサ46を介して互いに対向させた状態に維持しながら、それらのx軸の負方向側の端部を間隙部42bの下方に位置させることが可能である。更に、溶接部40は、このように間隙部42bの下方に位置されて互いに当接された状態の一端部10a及び他端部10bに対して、溶接ガン44を用いて溶接を施して溶接部12を形成することが可能である。この際、一端部10a及び他端部10b間の間隙部は、貫通孔42aの径がx軸の負方向側に向かうに連れて漸減するために狭められて当接状態にある。このように溶接されて得られる一端部10a及び他端部10b間の溶接部12は、筒状部材10のz軸の正方向側に位置する。 That is, the welded portion 40 is fed toward the negative direction side of the x-axis by the driving force of the feed mechanism 20, the right roller 32, and the left roller 34 through the right roller 32 and the left roller 34 of the first pressing mechanism 30. The end of the cylindrical member 10 on the negative side of the x axis is introduced into the through hole 42 a so that the one end 10 a and the other end 10 b of the cylindrical member 10 are opposed to each other via the spacer 46. While maintaining this state, it is possible to position the end portion on the negative direction side of the x-axis below the gap portion 42b. Further, the welded portion 40 is welded to the one end portion 10a and the other end portion 10b, which are positioned below the gap portion 42b and in contact with each other, using the welding gun 44, thereby welding the welded portion. 12 can be formed. At this time, the gap portion between the one end portion 10a and the other end portion 10b is narrowed and in contact with the diameter of the through hole 42a gradually decreasing toward the negative direction side of the x-axis. The welded portion 12 between the one end portion 10a and the other end portion 10b obtained by welding in this way is located on the positive side of the z-axis of the tubular member 10.
 第2の押圧機構50は、互いにz軸方向で対向する上ローラ52及び下ローラ54と、上ローラ52及び下ローラ54を支持する支持部材56と、を備え、これらは典型的には充分な強度を有する鉄等の金属製である。上ローラ52及び下ローラ54には各々凹部52a及び54aが対応して設けられ、凹部52a及び54aは、筒状部材10の所定の円筒外形に対応する形状を有する部分的な環状孔部を、協働して画成する。また、支持部材56は、その上部に上ローラ52及び下ローラ54を対応して軸支して、各々がy軸に平行である支持軸56a及び56bを回動自在に装着すると共に、図示を省略する床上に固定された支持板70上に固設される。支持軸56a及び56bは、各々、図示を省略するモータ等の駆動源に接続され、駆動源からの駆動力でそれらが互いに逆方向に回転されることにより、上ローラ52及び下ローラ54を互いに逆方向に回動自在に対応して軸支する。なお、支持軸56a及び56bに関しては、それらの一方のみが、図示を省略するモータ等の駆動源に接続されていてもよい。 The second pressing mechanism 50 includes an upper roller 52 and a lower roller 54 that face each other in the z-axis direction, and a support member 56 that supports the upper roller 52 and the lower roller 54, which are typically sufficient. It is made of metal such as iron with strength. The upper roller 52 and the lower roller 54 are provided with recesses 52a and 54a, respectively, and the recesses 52a and 54a have partial annular holes having a shape corresponding to a predetermined cylindrical outer shape of the cylindrical member 10, respectively. Create in collaboration. The support member 56 supports the upper roller 52 and the lower roller 54 corresponding to the upper part of the support member 56, and rotatably supports support shafts 56a and 56b each parallel to the y-axis. It is fixed on the support plate 70 fixed on the floor to be omitted. The support shafts 56a and 56b are each connected to a drive source such as a motor (not shown), and are rotated in the opposite directions by the drive force from the drive source, thereby causing the upper roller 52 and the lower roller 54 to move to each other. The shaft is supported so as to be rotatable in the opposite direction. Note that only one of the support shafts 56a and 56b may be connected to a drive source such as a motor (not shown).
 ここで、上ローラ52及び下ローラ54は、凹部52a及び54aが協働して、一端部10a及び他端部10bが溶接された筒状部材10の外周面に密着するような円周壁面を有する部分的な環状孔部を画成した状態で、かかる筒状部材10を所定の円筒形状に成形するように、支持軸56a及び56bの回転によって各々回動自在である。また上ローラ52及び下ローラ54が筒状部材10に与えるx軸の負方向側への移動速さは、送り機構20の棒部材22、並びに第1の押圧機構30の右ローラ32及び左ローラ34が筒状部材10に与えるx軸の負方向側への移動速さと等しく設定される。 Here, the upper roller 52 and the lower roller 54 have circumferential wall surfaces that are in close contact with the outer peripheral surface of the tubular member 10 to which the one end 10a and the other end 10b are welded in cooperation with the recesses 52a and 54a. The cylindrical member 10 can be rotated by the rotation of the support shafts 56a and 56b so that the cylindrical member 10 is formed into a predetermined cylindrical shape in a state where the partial annular hole portion is formed. Further, the moving speed of the upper roller 52 and the lower roller 54 in the negative direction of the x-axis applied to the cylindrical member 10 is determined by the rod member 22 of the feed mechanism 20 and the right roller 32 and the left roller of the first pressing mechanism 30. 34 is set equal to the moving speed in the negative direction of the x-axis applied to the tubular member 10.
 つまり、第2の押圧機構50は、溶接部40を経て、送り機構20及び第1の押圧機構30でx軸の負方向側に向けて送られてきた筒状部材10のx軸の負方向側の端部を、上ローラ52及び下ローラ54の間に導入して、筒状部材10の外周面を凹部52a及び54aが成す部分的な環状孔部で押圧した状態で、上ローラ52及び下ローラ54が互いに逆回転することにより、それらの回動動作により筒状部材10を溶接部40から引き出して第3の押圧機構60に向けて送ると共に、筒状部材10を所定の円筒形状に修正する成形を、筒状部材10に対して施すことが可能である。この際、部分的な環状孔部の凹部52a側の部分は、筒状部材10のz軸の正方向側の部分をz軸の負方向側に押圧し、部分的な環状孔部の凹部54a側の部分は、筒状部材10のz軸の負方向側の部分をz軸の正方向側に押圧する。かかる第2の押圧機構50による成形は、溶接部40による溶接で筒状部材10の縦断面形状が歪む可能性を考慮して、それを修正するために施されるものであり、凹部52a及び54aが成す部分的な環状孔部は、かかる溶接で筒状部材10の形状が歪む溶接部12の部分、つまり筒状部材10のz軸の正方向側の部分及びそれに対向する筒状部材10のz軸の負方向側の部分を覆って、筒状部材10を上下方向に押圧できる周長を有していれば足りる。 That is, the second pressing mechanism 50 passes through the welded portion 40 and is fed toward the negative direction side of the x axis by the feed mechanism 20 and the first pressing mechanism 30 in the negative direction of the x axis of the cylindrical member 10. The end portion on the side is introduced between the upper roller 52 and the lower roller 54, and the outer roller 52 and the lower roller 54 are pressed by the partial annular hole formed by the concave portions 52 a and 54 a, When the lower roller 54 rotates in the reverse direction, the cylindrical member 10 is pulled out from the welded portion 40 by the rotating operation and sent to the third pressing mechanism 60, and the cylindrical member 10 is formed into a predetermined cylindrical shape. The molding to be corrected can be applied to the tubular member 10. At this time, the portion of the partial annular hole on the recess 52a side presses the portion on the positive side of the z-axis of the tubular member 10 toward the negative direction of the z-axis, and the partial annular hole recess 54a. The portion on the side presses the portion of the tubular member 10 on the negative direction side of the z axis toward the positive direction side of the z axis. The molding by the second pressing mechanism 50 is performed in order to correct the vertical cross-sectional shape of the cylindrical member 10 in consideration of the possibility that the longitudinal cross-sectional shape of the tubular member 10 is distorted by welding by the welded portion 40, and the concave portion 52a and The partial annular hole formed by 54a is a portion of the welded portion 12 in which the shape of the tubular member 10 is distorted by such welding, that is, a portion on the positive side of the z-axis of the tubular member 10 and the tubular member 10 opposed thereto. It suffices to have a circumferential length that covers the negative direction side of the z-axis and can press the cylindrical member 10 in the vertical direction.
 第3の押圧機構60は、互いにz軸方向で対向する上ローラ62及び下ローラ64と、上ローラ62及び下ローラ64を支持する支持部材66と、を備え、これらは典型的には充分な強度を有する鉄等の金属製である。上ローラ62及び下ローラ64には凹部62a及び64aが設けられ、凹部62a及び64aは、筒状部材10の所定の円筒外形に対応する形状を有する部分的な環状孔部を、協働して画成する。また、支持部材66は、その上部に上ローラ62及び下ローラ64を対応して軸支して、各々がy軸に平行である支持軸66a及び66bを有し、図示を省略する床上に固定された支持板70上に固設される。上ローラ62及び下ローラ64は、凹部62a及び64aが協働して、一端部10a及び他端部10bが溶接された筒状部材10の外周面に密着するような円周壁面を有する部分的な環状孔部を画成した状態で、かかる筒状部材10を、その中心軸がy軸と平行になるように上下方向に釣り合った力で押圧しながら、支持軸66aの周りに回動自在である。なお、上ローラ62及び下ローラ64は、必要に応じて、駆動源により駆動されて互いに逆方向に回動されるような構成を有していてもよい。 The third pressing mechanism 60 includes an upper roller 62 and a lower roller 64 that face each other in the z-axis direction, and a support member 66 that supports the upper roller 62 and the lower roller 64, and these are typically sufficient. It is made of metal such as iron with strength. The upper roller 62 and the lower roller 64 are provided with recesses 62a and 64a, and the recesses 62a and 64a cooperate with a partial annular hole having a shape corresponding to a predetermined cylindrical outer shape of the tubular member 10. Define. Further, the support member 66 has upper shafts 62 and 66 corresponding to the upper roller 62 and the lower roller 64, and has support shafts 66a and 66b that are parallel to the y-axis, and is fixed on the floor (not shown). The support plate 70 is fixed. The upper roller 62 and the lower roller 64 are partially provided with circumferential wall surfaces such that the concave portions 62a and 64a cooperate to closely contact the outer peripheral surface of the tubular member 10 to which the one end portion 10a and the other end portion 10b are welded. In such a state that a circular ring hole is defined, the cylindrical member 10 can be rotated around the support shaft 66a while being pressed with a force balanced in the vertical direction so that the central axis thereof is parallel to the y-axis. It is. The upper roller 62 and the lower roller 64 may be configured to be driven by a driving source and rotated in opposite directions as necessary.
 つまり、第3の押圧機構60は、第2の押圧機構50を経て、送り機構20、第1の押圧機構30、及び第2の押圧機構40でx軸の負方向側に向けて送られてきた筒状部材10のx軸の負方向側の端部を、上ローラ62及び下ローラ64の凹部62a及び64aに導入して、筒状部材10を凹部62a及び64aが成す部分的な環状孔部で上下方向に釣り合った力で押圧した状態で、ローラ62が従動的に回転することにより、筒状部材10の中心軸がx軸と平行になるように修正する成形を、筒状部材10に対して施すことが可能である。かかる第3の押圧機構60による成形は、溶接部40による溶接で筒状部材10の長手方向の形状が上側及び下側に曲がる可能性を考慮して、それを修正するために施されるものであり、凹部62a及び64aが成す部分的な環状孔部は、かかる溶接で筒状部材10の形状が上方に曲がる起点となる溶接部12の部分及び重力で筒状部材10の形状が下方に曲がる起点となる溶接部12に対向する部分、つまり筒状部材10におけるz軸の正方向側の部分及びz軸の負方向側の部分を覆って筒状部材10を上下方向に釣り合った力で押圧できる周長を有していれば足りる。 That is, the third pressing mechanism 60 is sent toward the negative direction side of the x-axis by the feed mechanism 20, the first pressing mechanism 30, and the second pressing mechanism 40 via the second pressing mechanism 50. The end of the cylindrical member 10 on the negative side of the x-axis is introduced into the recesses 62a and 64a of the upper roller 62 and the lower roller 64, so that the cylindrical member 10 is a partial annular hole formed by the recesses 62a and 64a. In a state where the roller 62 is driven to rotate in a state in which the roller 62 is pressed with a force balanced in the vertical direction at the portion, the cylindrical member 10 is modified so that the central axis of the cylindrical member 10 is parallel to the x-axis. Can be applied. The molding by the third pressing mechanism 60 is performed in order to correct the possibility in which the longitudinal shape of the tubular member 10 bends upward and downward due to welding by the welding portion 40. The partial annular hole formed by the recesses 62a and 64a is such that the shape of the tubular member 10 becomes the starting point at which the shape of the tubular member 10 bends upward by such welding and the shape of the tubular member 10 is lowered by gravity. With a force that balances the tubular member 10 in the vertical direction, covering the portion facing the welded portion 12 that is the starting point of bending, that is, the portion on the positive direction side of the z-axis and the portion on the negative direction side of the z-axis. It is sufficient to have a circumference that can be pressed.
 以上の構成を有する溶接装置1を適用して行われる溶接方法につき、以下詳細に説明する。 The welding method performed by applying the welding apparatus 1 having the above configuration will be described in detail below.
 まず、所定のサイズの矩形鋼板に曲げ工程を施し、一端部10a及び他端部10bがz軸の正方向側で対向するように丸められた筒状部材10を得て、そのx軸の正方向側の端部を送り機構20の鍔部材24に当接させる。 First, a rectangular steel plate of a predetermined size is subjected to a bending step, and a cylindrical member 10 is obtained that is rounded so that one end 10a and the other end 10b face each other on the positive side of the z axis. The end of the direction side is brought into contact with the flange member 24 of the feed mechanism 20.
 次に、駆動源を稼働させて、送り機構20の棒部材22をx軸の負方向側に移動させることにより、送り機構20の鍔部材24に当接された筒状部材10をx軸の負方向側に向けて送り始める。今回の溶接方法が実行される間は、かかる送り機構20による筒状部材10の送りは継続される。 Next, by operating the drive source and moving the rod member 22 of the feed mechanism 20 to the negative direction side of the x axis, the cylindrical member 10 abutted against the flange member 24 of the feed mechanism 20 is moved to the x axis. Start sending in the negative direction. While the current welding method is executed, the feeding of the cylindrical member 10 by the feeding mechanism 20 is continued.
 すると、筒状部材10は、そのx軸の負方向側の端部から、一端部10a及び他端部10bの間にスペーサ38を介在させながら、第1の押圧機構30の右ローラ32及び左ローラ34の間に連続的に導入されていく。ここで、右ローラ32及び左ローラ34の間に導入された筒状部材10を、凹部32a及び34aが成す環状孔部で押圧した状態で、送り機構20による筒状部材10の送りに加えて、右ローラ32及び左ローラ34が互いに逆回転して筒状部材10を送ることにより、筒状部材10に対して、その一端部10a及び他端部10bを、スペーサ38を介して互いに対向させる成形を連続的に施していく。 Then, the cylindrical member 10 has the right roller 32 and the left of the first pressing mechanism 30 with the spacer 38 interposed between the one end 10a and the other end 10b from the end on the negative side of the x axis. It is continuously introduced between the rollers 34. Here, in addition to the cylindrical member 10 introduced between the right roller 32 and the left roller 34 being pressed by the annular hole formed by the recesses 32a and 34a, the cylindrical member 10 is fed by the feeding mechanism 20. When the right roller 32 and the left roller 34 are rotated in the opposite directions to send the cylindrical member 10, the one end 10 a and the other end 10 b are opposed to each other through the spacer 38 with respect to the cylindrical member 10. Molding is performed continuously.
 ついで、筒状部材10は、そのx軸の負方向側の端部から、一端部10a及び他端部10bの間にスペーサ46を介在させながら、溶接部40の貫通孔42a内に導入されていく。ここで、筒状部材10の外周面が貫通孔42aの周面に当接されることにより、筒状部材10の一端部10a及び他端部10bが、スペーサ46を介して互いに対向された状態に維持されながら間隙部42bの下方に位置されていき、このように間隙部42bの下方に位置されて互いに当接された状態の一端部10a及び他端部10bに対して、溶接ガン44を用いて溶接が施されて、溶接部12を連続的に形成していく。 Next, the cylindrical member 10 is introduced into the through hole 42a of the welded portion 40 from the end portion on the negative direction side of the x axis with the spacer 46 interposed between the one end portion 10a and the other end portion 10b. Go. Here, when the outer peripheral surface of the cylindrical member 10 is brought into contact with the peripheral surface of the through hole 42 a, the one end portion 10 a and the other end portion 10 b of the cylindrical member 10 are opposed to each other via the spacer 46. The welding gun 44 is placed against the one end 10a and the other end 10b that are positioned below the gap 42b and are in contact with each other. Welding is performed, and the welded portion 12 is continuously formed.
 ついで、筒状部材10は、そのx軸の負方向側の端部から、第2の押圧機構50の上ローラ52及び下ローラ54の間に連続的に導入されていく。ここで、上ローラ52及び下ローラ54の間に導入された筒状部材10を、凹部52a及び54aが成す部分的な環状孔部で押圧した状態で、送り機構20並びに第1の押圧機構30の右ローラ32及び左ローラ34による筒状部材10の送りに加えて、上ローラ52及び下ローラ54が互いに逆回転して筒状部材10を送ることにより、筒状部材10に対して、その形状を円筒形状とする成形、つまりその断面形状における溶接歪みを修正する成形を連続的に施していく。 Next, the cylindrical member 10 is continuously introduced between the upper roller 52 and the lower roller 54 of the second pressing mechanism 50 from the end portion on the negative direction side of the x axis. Here, in a state where the cylindrical member 10 introduced between the upper roller 52 and the lower roller 54 is pressed by a partial annular hole formed by the recesses 52 a and 54 a, the feed mechanism 20 and the first pressing mechanism 30. In addition to feeding the cylindrical member 10 by the right roller 32 and the left roller 34, the upper roller 52 and the lower roller 54 rotate reversely to each other to feed the cylindrical member 10, so that Molding with a cylindrical shape, that is, molding for correcting welding distortion in the cross-sectional shape is continuously performed.
 ついで、筒状部材10は、そのx軸の負方向側の端部から、第3の押圧機構60の上ローラ62及び下ローラ64の間に連続的に導入されていく。ここで、上ローラ62及び下ローラ64の間に導入された筒状部材10を、凹部62a及び凹部64aが成す部分的な環状孔部で押圧した状態で、送り機構20、第1の押圧機構30の右ローラ32及び左ローラ34並びに第2の押圧機構40の上ローラ52及び下ローラ54による筒状部材10の送りに従動して、上ローラ62及び下ローラ64が回転することにより、筒状部材10に対して、その形状を長手方向に直線的に延びた円筒形状とする成形、つまりその長手方向における溶接歪み及び重力による変形を修正する成形を連続的に施していく。 Next, the cylindrical member 10 is continuously introduced between the upper roller 62 and the lower roller 64 of the third pressing mechanism 60 from the negative end portion of the x-axis. Here, in a state where the cylindrical member 10 introduced between the upper roller 62 and the lower roller 64 is pressed by a partial annular hole formed by the recess 62a and the recess 64a, the feed mechanism 20 and the first pressing mechanism. When the upper roller 62 and the lower roller 64 rotate in response to the feeding of the cylindrical member 10 by the right roller 32 and the left roller 34 of the 30 and the upper roller 52 and the lower roller 54 of the second pressing mechanism 40, the cylinder The shaped member 10 is continuously molded so as to have a cylindrical shape linearly extending in the longitudinal direction, that is, molding for correcting deformation due to welding distortion and gravity in the longitudinal direction.
 そして、送り機構20による筒状部材10の送りにより、筒状部材10のx軸の正方向側の端部が、第3の押圧機構60の上ローラ62及び下ローラ64の間から導出されたならば、送り機構20の鍔部材24、第1の押圧機構30の右ローラ32及び左ローラ34並びに第2の押圧機構40の上ローラ52及び下ローラ54の駆動を停止し、筒状部材10のx軸の正方向側の端部を送り機構の20の鍔部材24から解放して、溶接後の筒状部材100を得ることになる。 Then, by feeding the cylindrical member 10 by the feeding mechanism 20, the end of the cylindrical member 10 on the positive side of the x axis is led out between the upper roller 62 and the lower roller 64 of the third pressing mechanism 60. Then, the driving of the collar member 24 of the feed mechanism 20, the right roller 32 and the left roller 34 of the first pressing mechanism 30, and the upper roller 52 and the lower roller 54 of the second pressing mechanism 40 is stopped, and the cylindrical member 10 is stopped. The end of the x-axis in the positive direction side is released from the flange member 24 of the feed mechanism 20 to obtain the tubular member 100 after welding.
 以上、本実施形態の構成によれば、板部材の第1の端部10aと第2の端部10bとが対向するように板部材を筒状に成形して得られた筒状部材10を送る送り機構と、送り機構20で送られている筒状部材10を、第1の端部10aと第2の端部10bとが第1のスペーサ38を介して対向するように押圧する第1の押圧機構30と、溶接ガン44、及び送り機構20で送られながら第1の押圧機構30で押圧された筒状部材10がその内部に侵入し、第1の端部10aと第2の端部10bとが第2のスペーサ46を介して対向された状態に維持されるように筒状部材10を保持しながら溶接ガン44に向かってガイドするガイド部材42を有する溶接部40と、を備えることにより、筒状部材10の互いに対向した両端部10a、10bの対向状態を維持した状態で、筒状部材10をスムースかつ連続的に溶接部40に導入して、筒状部材10の互いに当接された両端部10a、10bを連続的に溶接することができる。 As described above, according to the configuration of the present embodiment, the cylindrical member 10 obtained by forming the plate member into a cylindrical shape so that the first end portion 10a and the second end portion 10b of the plate member face each other. A first feeding mechanism and a cylindrical member 10 fed by the feeding mechanism 20 are pressed so that the first end portion 10a and the second end portion 10b face each other via the first spacer 38. The cylindrical member 10 pressed by the first pressing mechanism 30 while being fed by the pressing mechanism 30, the welding gun 44, and the feeding mechanism 20 enters the inside thereof, and the first end 10a and the second end A welded portion 40 having a guide member 42 that guides toward the welding gun 44 while holding the tubular member 10 so that the portion 10b is maintained facing the second spacer 46. Thus, the opposite end portions 10a, 10 of the cylindrical member 10 are opposed to each other. The cylindrical member 10 can be smoothly and continuously introduced into the welded portion 40 in a state where the opposed state of the cylindrical member 10 is maintained, and both end portions 10a and 10b of the cylindrical member 10 that are in contact with each other can be continuously welded. it can.
 また、第1の押圧機構30が、筒状部材10における第1の端部10a側の中間部分と筒状部材10における第2の端部10b側の中間部分とを対応して押圧する各々が回転自在な一対のローラ32、34を有することにより、筒状部材10の互いに対向した両端部10a、10bを確実に対向状態のまま維持させることができる。 Each of the first pressing mechanisms 30 correspondingly presses the intermediate portion of the cylindrical member 10 on the first end portion 10a side and the intermediate portion of the cylindrical member 10 on the second end portion 10b side. By having the pair of rotatable rollers 32 and 34, the opposite end portions 10a and 10b of the cylindrical member 10 can be reliably maintained in the opposed state.
 また、ガイド部材42が、送り機構20で送られている筒状部材10を挿通自在な貫通孔42a、及び貫通孔42aに開けられた間隙部42bを有し、溶接ガン44が、間隙部42bから当接された状態の第1の端部10aと第2の端部10bに臨むことにより、筒状部材10の互いに対向した両端部10a、10bを当接させた状態を維持しながら、かかる両端部10a、10bを確実に溶接することができる。 Further, the guide member 42 has a through hole 42a through which the cylindrical member 10 fed by the feeding mechanism 20 can be inserted, and a gap portion 42b opened in the through hole 42a, and the welding gun 44 has a gap portion 42b. The first end 10a and the second end 10b that are in contact with each other face the opposite end portions 10a and 10b of the cylindrical member 10 while maintaining the state in which they are in contact with each other. Both end portions 10a and 10b can be reliably welded.
 また、更に、送り機構20で送られながら溶接部40で第1の端部10aと第2の端部10bとが溶接された筒状部材10を押圧する第2の押圧機構50を備え、第2の押圧機構50が、筒状部材10における溶接された第1の端部10a及び第2の端部10bと、筒状部材10における溶接された第1の端部10aと第2の端部10bに対向する部分と、を対応して押圧する各々が回転自在な一対のローラ52、54を有することにより、溶接された筒状部材10の断面形状における形状歪みを確実に修正することができる。 Furthermore, a second pressing mechanism 50 that presses the tubular member 10 welded to the first end portion 10a and the second end portion 10b by the welding portion 40 while being fed by the feeding mechanism 20 is provided. The second pressing mechanism 50 includes the welded first and second end portions 10a and 10b of the tubular member 10, and the welded first and second end portions 10a and 10b of the tubular member 10. By having a pair of rotatable rollers 52 and 54 that respectively press the corresponding portions of the portions facing to 10b, the shape distortion in the cross-sectional shape of the welded tubular member 10 can be reliably corrected. .
 また、更に、送り機構20で送られながら第2の押圧機構50を経た筒状部材10を押圧する第3の押圧機構60を備え、第3の押圧機構60が、筒状部材10における溶接された第1の端部10a及び第2の端部10bと、筒状部材における溶接された第1の端部と第2の端部に対向する部分と、を対応して押圧する各々が回転自在な一対のローラ62、64を有することにより、溶接された筒状部材10の長手方向における形状歪みを確実に修正することができる。 Furthermore, a third pressing mechanism 60 that presses the cylindrical member 10 that has passed through the second pressing mechanism 50 while being fed by the feeding mechanism 20 is provided, and the third pressing mechanism 60 is welded to the cylindrical member 10. Each of the first end portion 10a and the second end portion 10b, and the welded first end portion and the portion facing the second end portion of the cylindrical member correspondingly pressed to each other are rotatable. By having such a pair of rollers 62 and 64, the shape distortion in the longitudinal direction of the welded tubular member 10 can be reliably corrected.
 なお、以上の本実施形態において、筒状部材10は、円筒状の形状を有するものとして説明したが、もちろん、その他の角筒状の形状を有するものであってもよい。 In the above-described embodiment, the cylindrical member 10 has been described as having a cylindrical shape, but, of course, may have another rectangular tube shape.
 また、筒状部材10に適用される溶接としても、プラズマ溶接やレーザ溶接の他に、マグ溶接やミグ溶接等を用いることも可能である。 Also, as welding applied to the tubular member 10, mag welding, MIG welding, or the like can be used in addition to plasma welding or laser welding.
 また、筒状部材10の長さが短く、その送りが、送り機構20の鍔部材24の駆動で足りる場合には、第1の押圧機構30の右ローラ32及び左ローラ34の駆動、並びに第2の押圧機構40の上ローラ52及び下ローラ54の駆動を、省略してもかまわない。 Further, when the length of the cylindrical member 10 is short and the feed is sufficient for driving the flange member 24 of the feed mechanism 20, the right roller 32 and the left roller 34 of the first pressing mechanism 30 are driven, and the first The driving of the upper roller 52 and the lower roller 54 of the second pressing mechanism 40 may be omitted.
 また、筒状部材10の溶接歪みが小さい場合や、筒状部材10の長さが短い場合には、第2の押圧機構50及び第3の押圧機構60を省略してもかまわない。 Further, when the welding distortion of the cylindrical member 10 is small or when the length of the cylindrical member 10 is short, the second pressing mechanism 50 and the third pressing mechanism 60 may be omitted.
 また、本発明は、部材の形状、配置、個数等は前述の実施形態に限定されるものではなく、その構成要素を同等の作用効果を奏するものに適宜置換する等、発明の要旨を逸脱しない範囲で適宜変更可能であることはもちろんである。 Further, the present invention is not limited to the above-described embodiment in terms of the shape, arrangement, number, etc. of the members, and does not depart from the gist of the invention, such as appropriately replacing its constituent elements with those having the same operational effects. Of course, it can be appropriately changed within the range.
 以上のように、本発明においては、筒状部材の互いに対向した両端部を対向させた状態で、筒状部材をスムースかつ連続的に溶接部に導入して、筒状部材の互いに当接された両端部を連続的に溶接することができる溶接装置を提供することができるものであるため、その汎用普遍的な性格から広範に車両等の移動体の車体の強度部材の分野に適用され得るものと期待される。 As described above, in the present invention, the cylindrical members are smoothly and continuously introduced into the welded portion with the opposite ends of the cylindrical members facing each other, and the cylindrical members are brought into contact with each other. In addition, since it is possible to provide a welding apparatus capable of continuously welding both end portions, it can be widely applied to the field of strength members of a vehicle body of a moving body such as a vehicle because of its general-purpose universal character. Expected.

Claims (5)

  1.  板部材の第1の端部と第2の端部とが対向するように前記板部材を筒状に成形して得られた筒状部材を送る送り機構と、
     前記送り機構で送られている前記筒状部材を、前記第1の端部と前記第2の端部とが第1のスペーサを介して対向するように押圧する第1の押圧機構と、
     溶接ガン、及び前記送り機構で送られながら前記第1の押圧機構で押圧された前記筒状部材がその内部に侵入し、前記第1の端部と前記第2の端部とが第2のスペーサを介して対向された状態に維持されるように前記筒状部材を保持しながら前記溶接ガンに向かってガイドするガイド部材を有する溶接部と、
    を備えた溶接装置。
    A feed mechanism for feeding a tubular member obtained by forming the plate member into a tubular shape so that the first end and the second end of the plate member are opposed to each other;
    A first pressing mechanism that presses the cylindrical member being fed by the feeding mechanism such that the first end and the second end face each other via a first spacer;
    The cylindrical member pressed by the first pressing mechanism while being fed by the welding gun and the feeding mechanism enters the inside, and the first end and the second end are the second. A welded portion having a guide member that guides toward the welding gun while holding the cylindrical member so as to be maintained in an opposed state via a spacer;
    Welding device equipped with.
  2.  前記第1の押圧機構は、前記筒状部材における前記第1の端部側の中間部分と前記筒状部材における前記第2の端部側の中間部分とを対応して押圧する各々が回転自在な一対のローラを有する請求項1に記載の溶接装置。 Each of the first pressing mechanisms can press each of the intermediate portion on the first end side of the cylindrical member and the intermediate portion on the second end side of the cylindrical member correspondingly. The welding apparatus according to claim 1, comprising a pair of rollers.
  3.  前記ガイド部材は、前記送り機構で送られている前記筒状部材を挿通自在な貫通孔、及び前記貫通孔に開けられた間隙部を有し、前記溶接ガンは、前記間隙部から当接された状態の前記第1の端部と前記第2の端部に臨む請求項2に記載の溶接装置。 The guide member has a through-hole through which the cylindrical member fed by the feed mechanism can be inserted, and a gap portion opened in the through-hole, and the welding gun is brought into contact with the gap portion. The welding apparatus according to claim 2, wherein the welding apparatus faces the first end portion and the second end portion in a bent state.
  4.  更に、前記送り機構で送られながら前記溶接部で前記第1の端部と前記第2の端部とが溶接された前記筒状部材を押圧する第2の押圧機構を備え、前記第2の押圧機構は、前記筒状部材における溶接された前記第1の端部及び前記第2の端部と、前記筒状部材における前記溶接された前記第1の端部と前記第2の端部に対向する部分と、を対応して押圧する各々が回転自在な一対のローラを有する請求項2又は3に記載の溶接装置。 And a second pressing mechanism that presses the cylindrical member welded to the first end and the second end by the weld while being fed by the feed mechanism, The pressing mechanism includes a welded first end and the second end of the tubular member, and the welded first end and the second end of the tubular member. The welding apparatus according to claim 2 or 3, further comprising a pair of rotatable rollers that press the corresponding portions correspondingly.
  5.  更に、前記送り機構で送られながら第2の押圧機構を経た前記筒状部材を押圧する第3の押圧機構を備え、前記第3の押圧機構は、前記筒状部材における溶接された前記第1の端部及び前記第2の端部と、前記筒状部材における前記溶接された前記第1の端部と前記第2の端部に対向する部分と、を対応して押圧する各々が回転自在な一対のローラを有する請求項4に記載の溶接装置。 And a third pressing mechanism that presses the cylindrical member that has passed through the second pressing mechanism while being fed by the feeding mechanism, and the third pressing mechanism is welded to the first cylindrical member. And the second end, and the corresponding pressing of the welded first end and the portion facing the second end of the tubular member are respectively rotatable. The welding apparatus according to claim 4, comprising a pair of rollers.
PCT/JP2014/059188 2013-03-28 2014-03-28 Welding apparatus WO2014157637A1 (en)

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JPH05373A (en) * 1979-10-23 1993-01-08 Elpatronic Ag Method for continuous seam welding of thin metal plate edges
JPH09216094A (en) * 1996-02-08 1997-08-19 Nippon Steel Weld Prod & Eng Co Ltd Material holding device in tube manufacturing weld of fusion welding tube
JP2003080370A (en) * 2001-09-06 2003-03-18 Fuji Kikai Kosakusho:Kk Welding method of cylindrical body

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MX9605102A (en) * 1995-10-27 1997-04-30 Tenedora Nemak Sa De Cv Method and apparatus for production of aluminum alloy castings.

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Publication number Priority date Publication date Assignee Title
US3590622A (en) * 1968-12-18 1971-07-06 Ernest N Calhoun Apparatus for making tubing
JPH05373A (en) * 1979-10-23 1993-01-08 Elpatronic Ag Method for continuous seam welding of thin metal plate edges
JPH09216094A (en) * 1996-02-08 1997-08-19 Nippon Steel Weld Prod & Eng Co Ltd Material holding device in tube manufacturing weld of fusion welding tube
JP2003080370A (en) * 2001-09-06 2003-03-18 Fuji Kikai Kosakusho:Kk Welding method of cylindrical body

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