CN102688920B - Pipe bender and bending method using pipe bender - Google Patents
Pipe bender and bending method using pipe bender Download PDFInfo
- Publication number
- CN102688920B CN102688920B CN201110438634.1A CN201110438634A CN102688920B CN 102688920 B CN102688920 B CN 102688920B CN 201110438634 A CN201110438634 A CN 201110438634A CN 102688920 B CN102688920 B CN 102688920B
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- tubing
- roller
- core head
- bending
- guide frame
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Abstract
The invention relates to a pipe bender, comprising a worktable, a feeding mechanism, a compacting mechanism and a pipe bending mechanism; the pipe bending mechanism comprises a mandrel fixed on the worktable, and a first roller and a second roller both of which are vertically arranged on the worktable; a plurality of guide structures are arranged on the worktable and located symmetrically on both sides of the mandrel head; the guide structures extend from the root part of the mandrel head to the tail end along the contour line of the mandrel head, and two extreme positions of the guide structures respectively correspond to the root part and the tail end of the mandrel head; the bottom parts of the two rollers are respectively slidably arranged on the corresponding guide structures; and the worktable further is provided with a driving mechanism used for respectively driving the two rollers to reciprocate between the two extreme positions of the guide structures so as to roll and bend the pipes. The invention further relates to a bending method using the pipe bender. The problem that the pipe bending mechanisms in the prior art bend the pipes only in one direction is solved.
Description
Technical field
The present invention relates to a kind of bending machine, also relate to the bending method that uses this bending machine.
Background technology
For heavy tank car, draw the vehicles such as coal car, in order to ensure safety, runs through beam and must adopt square tube, but because square tube bending exists some technical difficult points, large multiple enterprises still adopts straight square tube to add the mode of parallels.This has not only increased cost, and whole vehicle body is increased the weight of, and danger coefficient increases.
Current mechanical bend pipe industry is normal adopt push away curved, stretch bending, go for a stroll, the bend pipe mode such as press-bending processes bend pipe, the pipe bending mechanism using is one-way tube bender structure, if need the situation of multiple different directions bendings on a tubing, can only adopt and turn the solution of material method, labour intensity is large, and reloaded process influence machining accuracy and forming quality.
Summary of the invention
The object of the present invention is to provide a kind of bending machine, can only bend facing one direction the problem of tubing to solve bending machine of the prior art, the present invention simultaneously also provides the bending method that uses this bending machine.
In order to address the above problem, a kind of bending machine of the present invention, comprise workbench, be located at the feed mechanism on workbench, for compressing the hold-down mechanism of tubing and the pipe bending mechanism for bending tubing, described pipe bending mechanism comprises and is fixedly arranged on the plug on workbench and is vertically set on the first roller and the second roller on described workbench, the bilateral symmetry that is positioned at this core head on described workbench is provided with guide frame, described guide frame is all corresponding with root and the end of described core head respectively by the extension of root terminad and the described guide frame two limit positions of this core head along this core head outline line, the bottom of described two rollers is slidably arranged in respectively on corresponding described guide frame, on this workbench, be also provided with and drive respectively described two rollers between guide frame two limit positions, to move back and forth the driving mechanism for roll extrusion bending tubing.
Described guide frame is gathering sill or long guiding hole or directive slide track.
Described driving mechanism comprises the power source of two output straight reciprocating motions that are separately positioned on the both sides of described plug and is hinged on the connecting rod on each described power source output shaft, and the other end of described connecting rod is hinged on corresponding described roller.
Described connecting rod is U-shaped connecting rod, the two ends up and down of described two rollers is rotated respectively on two arms that are plugged in corresponding described U-shaped connecting rod oral area and to be realized hinged with described U-shaped, and the other end relative with oral area of described U-shaped connecting rod is hinged on the output shaft of corresponding power source.
Between described U-shaped connecting rod and corresponding described roller, be provided with bearing.
On the outer peripheral face of described two rollers, be equipped with radial section and be rectangle for the annular groove of square tube top interference fit.
Use a bending method for described bending machine, it is characterized in that comprising following steps:
1) first tubing is sleeved on plug;
2) then with feed mechanism, tubing is pushed into precalculated position to core head direction, then tubing is fixed with hold-down mechanism;
3) extreme position corresponding with core head root that then utilizes driving mechanism that a roller is fixed on to guide frame withstands tubing, and drive another roller on another guide frame by the extreme position corresponding with core head root to moving with extreme position corresponding to core head end, in this process by roller roll extrusion tubing by tubing bending.
A dog leg method that uses described bending machine, is characterized in that comprising following steps:
1) first tubing is sleeved on plug;
2) then with feed mechanism, tubing is pushed into precalculated position to core head direction, then tubing is fixed with hold-down mechanism;
3) extreme position corresponding with core head root that then utilizes driving mechanism that the first roller is fixed on to guide frame withstands tubing, and drive the second roller described in another on guide frame by the extreme position corresponding with core head root to moving with extreme position corresponding to core head end, in this process by the second roller rolled tube material by tubing bending;
4) the second roller is got back to the extreme position corresponding with core head root under driving mechanism drives;
5) then hold-down mechanism unclamps tubing, then continues tubing be pushed into precalculated position and by this hold-down mechanism, tubing fixed to described core head direction with feed mechanism;
6) extreme position corresponding with core head root that then utilizes driving mechanism that the second roller is fixed on to guide frame withstands tubing, and drive the first roller described in another on guide frame by the extreme position corresponding with core head root to moving with extreme position corresponding to core head end, in this process by the first roller roll extrusion tubing by tubing to another direction bending, realize a dog leg process.
Bending machine of the present invention, be positioned at core head bilateral symmetry at chassis upper surface and be provided with the guide frame being extended by the root terminad of this core head along this core head outline line, and guide frame two limit positions is corresponding with root and the end of described core head respectively, the bottom of two rollers is slidably arranged in respectively on corresponding described guide frame, driving mechanism drives respectively described two rollers between guide frame two limit positions, to move back and forth for roll extrusion bending tubing, tubing adds man-hour like this, the first roller withstands tubing in initial threshold position, the second roller is under the promotion of power source output shaft, moved to another limit end by initial threshold position along corresponding guide frame, tubing is carried out to roll extrusion, tubing is carried out to the bending of a direction, in like manner, in the time that tubing is carried out to rightabout bending, the second roller withstands tubing in initial threshold position, the first roller is under the promotion of power source output shaft, moved to another extreme position by initial threshold position along corresponding guide frame, tubing is pushed, solve the problem that pipe bending mechanism of the prior art can only bend tubing facing one direction.
Further, due on two roller outer peripheral faces, be equipped with radial section be rectangle for the annular groove of square tube top interference fit, therefore in the process of extruding bending tubing, particularly when square pipe, prevent that tubing from expanding to both sides under the effect of extruding force, owing to using roll extrusion mode at bending tubing, and in the tube wall of tubing bending part inner side, depress on the common top of external roller and plug, gauffer deformation space inside tubing bending part, can prevent the distortion of tube wall inside tubing bending part well.
Brief description of the drawings
Fig. 1 is the top view of embodiment of the present invention pipe bending mechanism;
Fig. 2 is the left view of embodiment of the present invention pipe bending mechanism;
Fig. 3 is the top view of embodiment of the present invention bending machine;
Fig. 4 is the structural representation of embodiment of the present invention bending machine feed mechanism;
Fig. 5 is the structural representation of embodiment of the present invention bending machine plug;
Fig. 6 is the structural representation that embodiment of the present invention bending machine nut seat promotes frame;
Fig. 7 is the B place enlarged drawing of Fig. 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated:
An embodiment for bending machine, as shown in Fig. 1 ~ 3, comprises workbench 1, be located at the feed mechanism on workbench 1, for compressing the hold-down mechanism of tubing and the pipe bending mechanism for bending tubing, feed mechanism comprises motor 2, shaft coupling 10, the leading screw 21 being connected with shaft coupling 10 and the nut seat being driven by leading screw 21 promote frame 22, nut seat promotes frame 22 and comprises nut seat 35 and be connected in the nut 36 on nut seat 35, leading screw 21 slides and is located in the hole 37 of nut seat, described pipe bending mechanism comprises the plug 11 being arranged on workbench and is vertically set on the first roller 19 and the second roller 20 on described workbench, workbench comprises table top and is fixed on 8, two, the chassis roller 19 on table top by bolt 17, 20 and the core head of plug be all arranged on chassis 8, two rollers 19, on 20 outer peripheral face, be equipped with radial section and be rectangle for the annular groove 21 of square tube top interference fit, chassis 8 upper surfaces are positioned at the symmetrically arranged guide frame in position of core head both sides, guide frame is all corresponding with root and the end of described core head respectively by the extension of root terminad and the described guide frame two limit positions of this core head along this core head outline line, and guide frame is long guiding hole 15, 15 ', two rollers 19, 20 bottom is slidably arranged in respectively corresponding described long guiding hole 15, on 15 ', on this workbench, be also provided with and drive respectively described two rollers between guide frame two limit positions, to move back and forth the driving mechanism for roll extrusion bending tubing, this driving mechanism comprises that the both sides of plug 11 are equipped with the power source 5 of output straight reciprocating motion, 5 ' and connecting rod 6, 6 ', the present embodiment medium power source is hydraulic cylinder, roller 19, 20 with connecting rod 6, 6 ' one end is by bearing 14, 18 is hinged, connecting rod 6, the output shaft 13 of the 6 ' other end and described power source, 13 ' is hinged by piston pin 16, power source output shaft 13, 13 ' promotes corresponding described roller 19 in the time moving back and forth, the 20 described long guiding holes 15 from correspondence, 15 ' limit end moves back and forth to another limit end, promotes corresponding roller 19 in order to stablize, 20, connecting rod 6, 6 ' is U-shaped connecting rod, two rollers 19, 20 lower end is respectively through corresponding described pilot hole 15, 15 ', described two rollers 19, 20 two ends is up and down rotated respectively on two arms that are plugged in corresponding described U-shaped connecting rod oral area and to be realized hinged with described U-shaped connecting rod, and the other end relative with oral area of described U-shaped connecting rod is hinged on the output shaft 13 of corresponding power source, 13 ' is upper, in order to make roller 19, 20 can be along pilot hole 15, 15 ' Stable sliding, at described two rollers 19, described in 20 upper end and two, between U-shaped connecting rod, be also provided with dish 7, described upper dish 7 is fixed on chassis 8 by bolt or connecting axle, and coils 7 positions corresponding with pilot hole on described chassis 8 on described and be provided with pilot hole, described two rollers 19, 20 upper end is located in pilot hole and with pilot hole and is slidably matched, hold-down mechanism comprises that three contact rollers 4 that are positioned at the compression hydraulic cylinder 9 of plug 11 1 sides and are positioned at plug 11 opposite sides form, and plug 11 is provided with straight joint, and plug 11 afterbodys are through two on nut seat corresponding through holes 38,38 ', and is clamped by plug jig 3.
In other embodiment of a kind of bending machine, different from above-described embodiment, described pilot hole can also replace with gathering sill, now, the lower end of corresponding described roller is slidably arranged in gathering sill, and the underarm of described U-shaped connecting rod is hinged on corresponding roller and is positioned at the part on gathering sill; In other embodiment of a kind of pipe bending mechanism, different from above-described embodiment, described pilot hole can also replace with directive slide track, and now, the lower end of corresponding described roller is slidably arranged on slide rail; In other embodiment of a kind of pipe bending mechanism, different from above-described embodiment, the power source of driving mechanism can also be exported straight line by spur gear for motor, interior combustion gas etc. and move in turn, and promotes roller by push pedal and move back and forth on guiding mechanism.
A kind of bending method that uses bending machine of the present invention, comprises following steps:
1) first tubing is sleeved on plug;
2) then with feed mechanism, tubing is pushed into precalculated position to core head direction, then tubing is fixed with hold-down mechanism;
3) extreme position corresponding with core head root that then utilizes driving mechanism that a roller is fixed on to guide frame withstands tubing, and drive another roller on another guide frame by the extreme position corresponding with core head root to moving with extreme position corresponding to core head end, in this process by roller roll extrusion tubing by tubing bending.
A kind of dog leg method that uses bending machine of the present invention, comprises following steps:
1) first tubing is sleeved on plug;
2) then with feed mechanism, tubing is pushed into precalculated position to core head direction, then tubing is fixed with hold-down mechanism;
3) extreme position corresponding with core head root that then utilizes driving mechanism that the first roller is fixed on to guide frame withstands tubing, and drive the second roller described in another on guide frame by the extreme position corresponding with core head root to moving with extreme position corresponding to core head end, in this process by the second roller rolled tube material by tubing bending;
4) the second roller is got back to the extreme position corresponding with core head root under driving mechanism drives;
5) then hold-down mechanism unclamps tubing, then continues tubing be pushed into precalculated position and by this hold-down mechanism, tubing fixed to described core head direction with feed mechanism;
6) extreme position corresponding with core head root that then utilizes driving mechanism that the second roller is fixed on to guide frame withstands tubing, and drive the first roller described in another on guide frame by the extreme position corresponding with core head root to moving with extreme position corresponding to core head end, in this process by the first roller roll extrusion tubing by tubing to another direction bending, realize a dog leg process.
The process that feed mechanism promotes tubing is as follows, and motor passes through screw mandrel drive nut seat and promotes frame, and nut seat promotes frame promotion tubing and slides to the direction of pipe bending mechanism, behind arrival precalculated position, stops driving; Hold-down mechanism compresses tubing and realizes by compressing under the compression fit of hydraulic cylinder and contact roller, and the present invention uses bending machine tubing can be bent into the shapes such as Z-shaped, W shape.
Claims (8)
1. a bending machine, comprise workbench, be located at the feed mechanism on workbench, for compressing the hold-down mechanism of tubing and the pipe bending mechanism for bending tubing, it is characterized in that: described pipe bending mechanism comprises and is fixedly arranged on the plug on workbench and is vertically set on the first roller and the second roller on described workbench, the bilateral symmetry that is positioned at this core head on described workbench is provided with guide frame, described guide frame is all corresponding with root and the end of described core head respectively by the extension of root terminad and the described guide frame two limit positions of this core head along this core head outline line, the bottom of described two rollers is slidably arranged in respectively on corresponding described guide frame, on this workbench, be also provided with and drive respectively described two rollers between guide frame two limit positions, to move back and forth the driving mechanism for roll extrusion bending tubing, tubing adds man-hour, the first roller withstands tubing in initial threshold position, the second roller is under the promotion of power source output shaft, moved to another limit end by initial threshold position along corresponding guide frame, tubing is carried out to roll extrusion, tubing is carried out to the bending of a direction, in like manner, in the time that tubing is carried out to rightabout bending, the second roller withstands tubing in initial threshold position, the first roller, under the promotion of power source output shaft, is moved to another limit end by initial threshold position along corresponding guide frame, and tubing is pushed.
2. a kind of bending machine according to claim 1, is characterized in that: described guide frame is gathering sill or long guiding hole or directive slide track.
3. a kind of bending machine according to claim 2, it is characterized in that: described driving mechanism comprises the power source of two output straight reciprocating motions that are separately positioned on the both sides of described plug and be hinged on the connecting rod on each described power source output shaft, the other end of described connecting rod is hinged on corresponding described roller.
4. a kind of bending machine according to claim 3, it is characterized in that: described connecting rod is U-shaped connecting rod, the two ends up and down of described two rollers is rotated respectively on two arms that are plugged in corresponding described U-shaped connecting rod oral area and to be realized hinged with described U-shaped, and the other end relative with oral area of described U-shaped connecting rod is hinged on the output shaft of corresponding power source.
5. a kind of bending machine according to claim 4, is characterized in that: between described U-shaped connecting rod and corresponding described roller, be provided with bearing.
6. according to a kind of bending machine described in claim 1-5 any one, it is characterized in that: on the outer peripheral face of described two rollers, be equipped with radial section and be rectangle for the annular groove of square tube top interference fit.
7. right to use requires a bending method for bending machine described in 1, it is characterized in that comprising following steps: 1) first tubing is sleeved on plug;
2) then with feed mechanism, tubing is pushed into precalculated position to core head direction, then tubing is fixed with hold-down mechanism;
3) extreme position corresponding with core head root that then utilizes driving mechanism that a roller is fixed on to guide frame withstands tubing, and drive another roller on another guide frame by the extreme position corresponding with core head root to moving with extreme position corresponding to core head end, in this process by roller roll extrusion tubing by tubing bending.
8. right to use requires a dog leg method for bending machine described in 1, it is characterized in that comprising following steps:
1) first tubing is sleeved on plug;
2) then with feed mechanism, tubing is pushed into precalculated position to core head direction, then tubing is fixed with hold-down mechanism;
3) extreme position corresponding with core head root that then utilizes driving mechanism that the first roller is fixed on to guide frame withstands tubing, and drive the second roller described in another on guide frame by the extreme position corresponding with core head root to moving with extreme position corresponding to core head end, in this process by the second roller rolled tube material by tubing bending;
4) the second roller is got back to the extreme position corresponding with core head root under driving mechanism drives;
5) then hold-down mechanism unclamps tubing, then continues tubing be pushed into precalculated position and by this hold-down mechanism, tubing fixed to described core head direction with feed mechanism;
6) extreme position corresponding with core head root that then utilizes driving mechanism that the second roller is fixed on to guide frame withstands tubing, and drive the first roller described in another on guide frame by the extreme position corresponding with core head root to moving with extreme position corresponding to core head end, in this process by the first roller roll extrusion tubing by tubing to another direction bending, realize a dog leg process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110438634.1A CN102688920B (en) | 2011-12-25 | 2011-12-25 | Pipe bender and bending method using pipe bender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110438634.1A CN102688920B (en) | 2011-12-25 | 2011-12-25 | Pipe bender and bending method using pipe bender |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102688920A CN102688920A (en) | 2012-09-26 |
| CN102688920B true CN102688920B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110438634.1A Expired - Fee Related CN102688920B (en) | 2011-12-25 | 2011-12-25 | Pipe bender and bending method using pipe bender |
Country Status (1)
| Country | Link |
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| CN (1) | CN102688920B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103111501B (en) * | 2013-02-26 | 2015-11-18 | 中山市奥翔机械有限公司 | A kind of pipe bending mechanism, a kind of bending machine and bending method |
| CN104759501A (en) * | 2014-01-03 | 2015-07-08 | 北京真金昌汽车科技有限公司 | Core rod for bending square pipe |
| CN103878220B (en) * | 2014-04-03 | 2015-06-03 | 江苏金晟元特种阀门股份有限公司 | U-shaped heating furnace tube bend process for conducting heating fluid heating and pressure maintaining forming |
| CN103920777B (en) * | 2014-04-14 | 2016-01-20 | 吴刚 | A kind of bending process of linear pattern heating furnace tube |
| CN103934336B (en) * | 2014-04-14 | 2015-10-28 | 楼国华 | A kind of bending process of linear pattern heating furnace tube |
| CN103934332B (en) * | 2014-04-14 | 2016-01-27 | 刘锦刚 | A kind of bending process of linear pattern heating furnace tube |
| CN103934328A (en) * | 2014-04-14 | 2014-07-23 | 苏培钦 | Linear type heating furnace tube bending technology |
| CN103920772B (en) * | 2014-04-14 | 2015-09-16 | 汪贤女 | A kind of bending process of linear pattern heating furnace tube |
| CN107214221B (en) * | 2017-07-04 | 2023-07-28 | 中石化石油工程技术服务有限公司 | Internal pipe bending machine and pipe bending method |
| CN108002692B (en) * | 2017-12-13 | 2020-01-03 | 中国科学技术大学 | Bending device based on double-arm structure |
| CN114682663B (en) * | 2022-04-06 | 2023-08-25 | 江苏耀坤液压股份有限公司 | Bending assembly with curvature of bending part cavity of hydraulic oil pipe close to theoretical circle |
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| SU1411071A1 (en) * | 1986-01-07 | 1988-07-23 | Центральное Конструкторско-Технологическое Бюро Велостроения | Arrangement for spatial bending of tubular billets |
| CN2173669Y (en) * | 1992-09-01 | 1994-08-10 | 中国矿业大学 | Bending roll machine with adjustable central roller and oscillating side rollers |
| CN1125164A (en) * | 1994-12-21 | 1996-06-26 | 陈渊坤 | One-side driving type wheel pipe bender |
| US6134932A (en) * | 1996-04-10 | 2000-10-24 | Robolix | Machine for bending or cambering a profile section, and bending head therefor |
| CN202377335U (en) * | 2011-12-25 | 2012-08-15 | 河南科技大学 | Tube bending machine |
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| JPH01118317A (en) * | 1987-10-31 | 1989-05-10 | Toyo Kinzoku Kk | Working apparatus for bending iron table frame, and the like |
| JP3297214B2 (en) * | 1994-08-24 | 2002-07-02 | ワイケイケイ株式会社 | Bending method and bending machine for long metal bars |
| FR2806943B1 (en) * | 2000-04-03 | 2002-08-16 | Macsoft | ERASABLE FOLDING NOSE BAR BENDING MACHINE |
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| SU1411071A1 (en) * | 1986-01-07 | 1988-07-23 | Центральное Конструкторско-Технологическое Бюро Велостроения | Arrangement for spatial bending of tubular billets |
| CN2173669Y (en) * | 1992-09-01 | 1994-08-10 | 中国矿业大学 | Bending roll machine with adjustable central roller and oscillating side rollers |
| CN1125164A (en) * | 1994-12-21 | 1996-06-26 | 陈渊坤 | One-side driving type wheel pipe bender |
| US6134932A (en) * | 1996-04-10 | 2000-10-24 | Robolix | Machine for bending or cambering a profile section, and bending head therefor |
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