WO1988007897A1

WO1988007897A1 - Process and devices for the manufacture of pipes with longitudinal seams

Info

Publication number: WO1988007897A1
Application number: PCT/DE1988/000193
Authority: WO
Inventors: Carl August Witt
Original assignee: Carl August Witt
Priority date: 1987-04-13
Filing date: 1988-03-25
Publication date: 1988-10-20
Also published as: EP0309512A1; DE3712543C1

Abstract

In a process and devices for the manufacture of pipes with longitudinal seams made from strip material wound on a coil, the strip material is wound off the coil and conformed into a pipe billet round of approximately $m(w)-shaped cross-section, with the edges of the strip adjacent or overlapping and at least one edge touching the wall of the tube. The edges of the strip are then joined together and the pipe billet round of $m(w)-shaped cross-section is opened out to the desired cross-section in a sizing train.

Description

Method and devices for producing longitudinal seam tubes

The invention relates to methods and devices for the production of longitudinal seam tubes made of band-shaped material such as sheet metal, cardboard, plastic or the like, using a decoating station, a device for forming a slotted tube, a device for joining the band edges into a longitudinal seam and one Cutting station and / or a calibration section

Tubes made of sheet metal or strip-like material are either manufactured from predetermined sheet or strip lengths (in pieces) or are continuously produced from a so-called endless strand.

The manufacture of pipe sections has proven itself in the field of downpipes. There are three main production methods:

- individually prepared strip material is individually formed into tubes,

- Slit tubes made of individually prepared strip material are pushed onto the calibration mandrels of a soldering machine and removed after the soldering process and

- The soldering in the course of production takes place in the cycle process, albeit with different cycle sequences.

In a known case (S. Schwaigerer, Piping, Springer-Verlag 1967, Berlin, Heidelberg, p. 468 ff), a Kadbrierdorn provided with the slot tube is first fed to a soldering device, the soldering sled of which runs along the solder slot. In the second cycle, the pipe soldered together is cooled and then the calibration mandrel - C- -

deducted. The entire device works in push-pull mode, with the slotted tube being pushed onto the calibration mandrel in the first cycle, which is then pivoted into the soldering device and swung out again after the soldering process. In the second cycle, cooling is carried out and the joined pipe is removed.

This production is adapted to manual production. The output capacity is low. In addition, only pieces of pipe of the same length and diameter can be manufactured. A different core making device is required for pipes with different dimensions.

An almost entirely improved manufacturing method is the almost automatic Karussell process (S. Schwaigerer, Rohrleitungen, Springer-Verlag 1967, Berlin, Heidelverg, p. 468 ff.), In which, for example, four calibration mandrels are used, which are star-shaped with one End of the axis of rotation of the carousel in We are connected. A corresponding sheet metal blank is fed to the first forming and soldering position without being deformed. The sheet formed in the forming device is clamped on the calibration mandrel by means of a clamping or holding device and is soldered or glued in the second station. In the third cycle, the calibration mandrel is pivoted into the area of a push-off device. In the following cycle, the calibration mandrel is returned to the Verfor station.

Although this method of manufacturing pipe sections is automated compared to the first method, only pipe sections of the same length and diameter can be manufactured. The discharge capacity is also low.

A larger output capacity can be achieved with the so-called revolver process (Fachvereinigung Präzisionsrohrwerke eV, leaflet 253, see edition 1985, advice center for sheet steel use Düsseldorf), in which 8 calibration mandrels can be rotated in a horizontal position along the circumference of a circle on one seated washer. Each calibration mandrel goes through 8 cycle stages: first cycle: pushing the slotted tube; second bar: tension, include solder tape, glue, relax; third, fourth and fifth bar: solder; sixth and seventh cycle: cooling by air, unclamping, pushing off the pipe section and eighth cycle: cleaning the device.

If a higher output on pipe sections can also be achieved with this, this device is also only suitable for producing stirring pieces of the same length with the same pipe diameters.

In contrast to these manufacturing methods for pipe pieces, in a continuously working manufacturing process, coiled strips, so-called. Coils are used, which are formed into a slotted tube in a roll former by means of suitable rollers and then fed to an adhesive, soldering or welding device for the longitudinal seam. Following the connection station, the inner and outer longitudinal seams are rolled in and the tube is continuously drawn. Then, for example, a flying pipe saw cuts the pipe string into commercially available single lengths (lecture by W.F. Oppermann at the 46th meeting of the GDMB specialist committee for the extraction and processing of copper on April 24 and 25, 1986 in Hamburg).

Even with this continuous production method, only pipe strings with the same diameters can be produced.

In all the known manufacturing methods described above, the slotted tubes are brought into the final shape before the longitudinal seams are joined. As a result of the structure of the soldering, welding or ultrasonic welding devices (DBP 2911 403), only round tubes and, moreover, only tubes with one and the same diameter can be produced.

Such pipes have an extraordinarily large space requirement during transport, based on their weight. Pipe pieces with commercially available lengths also have the disadvantage that they are pieced together in the installation point and the connection areas have to be sealed. When fitting the pipe sections to the required overall lengths, for example in the case of downpipes, there may be a not inconsiderable amount of waste. The object of the present invention is to create manufacturing methods and manufacturing devices with which, for example for downpipes, the transport volume per unit weight of the pipes can be drastically reduced and with which not only so-called endless pipes, but also Have pipe sections of any length and with different diameters and cross sections manufactured.

It has been found that this object can be achieved in a simple manner if, after decoiling, the band-shaped material is formed into a tube billet with an approximately ∞-shaped cross section with band edges lying side by side or one above the other, at least one of which is on the tube wall lies on that the strip edges are then welded, soldered, glued, stapled, folded, double folded or the like. are joined together with the aid of connecting material and, if appropriate, under the action of temperature and / or pressure, after which the tube billet with an o-shaped cross section is then thorned out to a desired cross section.

The co-shaped cross-section of the slotted tubes and the tube billets is the prerequisite for the fact that tubes with different diameters can be produced in the same device by joining the strip edges and, under certain circumstances, can be transported with significantly less space required per unit weight. The invention allows the device for molding the slotted tubes to be adapted to different bandwidths of the starting material with simple means.

According to the invention, an endless tube billet with a cross-sectional shape that is not usable per se is first produced in the manner of a horizontal o. This pipe string can be subdivided into the individual lengths required in each case. The transport of these intermediate products with a co-shaped cross section takes up much less volume per unit weight than the transport of round or square tubes. After transportation of the intermediate products with a CO-shaped cross-section, the final square, circular, hexagonal, oval or other cross-sectional shape is given to the pipe pieces, for example in a delivery warehouse, through a calibration section with a corresponding calibration mandrel. According to the invention, numerous band-shaped materials can be processed into pipes, and where it is not sufficient for the band flanks to rest on the opposite pipe wall during assembly, a supporting mechanism made of rollers or sliding bodies is to be provided under the pipe wall.

It is advantageous that the device for molding the slotted tube is a roll former with several profiling stands, which include rollers and interchangeable and / or adjustable lateral profiling rollers for the edge edges of the band-shaped material. As a result, it is possible to use the same roll former to process differently wide starting material into tubes with different diameters and cross-sectional shapes.

Further details emerge from claims 6-14.

In one embodiment of the invention, a calibration section with a calibration tool can be provided behind the roll former and the joining section for joining the strip edges. Details of the calibration tool are given in claims 15-23.

The device according to the invention is designed such that the calibrating tool can be exchanged in order to be able to produce pipes with different pipe diameters and pipe cross sections. Details of the connection mechanism between the shaping and joining device and the calibration tool characterize claims 24-26.

In the exemplary embodiment described so far, a cutting station - for example a flying saw - is provided behind the calibration tool, with which tube pieces of the desired length can be cut off.

A device without a cutting station can also be designed according to claim 27. This allows endless pipes to be deposited, for example in a prepared trench.

A further exemplary embodiment is characterized in claims 28-30 which, for example, cut tube sticks to desired lengths in a factory Co-shaped cross-section are transported to a separate calibration route, for example in a distribution warehouse, to save space and are thorned to the desired cross-section.

With the invention, tubes with different diameters and cross-sectional shapes can be produced on one device, namely as endless tubes or as tube pieces. In the manufacture of pipe sections, it is possible to first produce pipe billets with a co-shaped cross section in a central plant and to transport them to a delivery plant with a separate calibration path in a space-saving manner, where the pipe billets with an o-shaped cross section in be brought into their desired final shape.

Embodiments of the invention are explained below with reference to the drawing.

It shows:

1a shows the overview drawing of an exemplary embodiment of the invention in side view, FIG. 1b shows the overview drawing of an exemplary embodiment

Fig. 1a in plan view, Fig. 2 is a perspective overview drawing of essential parts of the device, Fig. 2a is a perspective view of the front part of the

2, Fig. 2b is a perspective view of the rear part of the

2, FIG. 4 shows a cross section through the profiling frame B in FIG. 2, FIG. 5 shows a cross section through the profiling frame B in FIG

Fig. 2, Fig. 6 shows a cross section through an edge laying scaffold according to Fig. 2, Fig. 7 is a perspective view of a calibration tool, Fig. 8 is a section along the line VIII / VIII in Fig. 7, Flg. 9 is a partial perspective view of a longitudinal seam tube in front of the calibration path, 10 shows a construction detail,

11 is a construction detail,

12 sectional views of pipe cross sections,

Fig. 13 schematically shows another embodiment of the invention and

Fig. 14 schematically shows another embodiment of the invention.

In Fig. 1a an embodiment of the invention is shown schematically as a side view and in Fig. 1b as a plan view. A production system 1 has a decoiling station A with a coil 2 mounted on an axis of rotation 3 for receiving strip-shaped material 4, for example sheet metal strips, plastic strips, but also strips of cardboard or the like. With the device according to the invention, longitudinal tubes with any lengths and cross sections can be produced from these or similar starting materials.

The decoating station A is equipped with a so-called follow-up coil 5, which arrives in the position shown in the insertion direction 6 and can, if necessary, be moved in the insertion direction 7 to replace the coil 2.

The decoating station A is followed by a device for molding in a slotted tube 69 with an o-shaped cross section 64, which includes a roll former with several profiling frames B to G, which will be described in detail later.

This roll former is followed by a joining section H in which the band edges 8 and 9 of the slotted tube 69 are connected to one another, resulting in a tube billet 70 with a co-shaped cross section 64. In the exemplary embodiment shown, a soldering device is schematically indicated as the joining section H, with which, for example, band-shaped titanium-zinc can be processed to produce downpipes. This soldering device is arranged in a frame 105 with heating gas nozzles 73 and synthetic gas nozzles 74 and includes transport wheels or rollers 71 which are driven, for example, by a motor 107 via a transport chain 106. The transport wheels or rollers 71 cooperate with counter-rollers 72 in order to transport the tube billet 70 through the joining section H. In the exemplary embodiment shown, soldering tape 49 can be wound up as a connecting means on a supply roll 104. If an ultrasonic welding device or an adhesive device for cardboard or plastic tubes is provided instead of a soldering device, the appropriate connecting material can be arranged from a suitable device, for example on the supply roll 104. Depending on the mode of operation of the joining section H, the heating gas nozzles 73 or the cooling gas nozzles 74 can be replaced by other corresponding devices.

If necessary, the joining section H can also contain a pressure welding device, not shown, but known per se, for joining the strip edges 8, 9 together.

The tube billet 70 can also be transported in the joining section H by other means, not shown.

Behind the joining section H there is a calibration section I with a calibration tool 76, by means of which the tubular billets 70 can be formed onto a square, square, oval, round or any other cross section. The longitudinal seam tube 94 is pulled by means of drive wheels 82 and running wires 89 over the calibration tool 76, as a result of which the strip-shaped starting material 4 is also decoiled and the slotted tube 69 and the tube billet 70 are pulled through their stations BH.

A control-regulating device 108 ensures that the production system 1 functions properly in a manner known per se.

The calibration tool 76 is fastened to a bridge 86 in a manner which will be explained in detail later by means of holding rods 84, 85.

Behind the calibration section J is a cutting device 109, which in the exemplary embodiment shown is equipped with a flying saw 110 and a discharge device 111. Both in Fig. 1a and in Fig. 1b, a longitudinal tube 94 can be seen on the drain device 111, which has been cut by means of the flying saw 110. With the help of the flying Saw 110 can be cut to length lengths of any length. In this way, it is possible with the invention to largely avoid the piecing together of downpipes on a construction site, as a result of which a considerable amount of working time when adapting the pipes, for example to the building, is avoided.

In another exemplary embodiment, which will only be described in detail in connection with FIG. 13, the stations A to J are mounted on a carriage 113 which can be moved in the direction of travel 112 in order to produce and deposit an endless tube 115.

In a further embodiment of the invention, the Kalibrierstreck J according to the Fig. 1a and 1b separately as Sonderkalibrierstrecke K for example in a distribution center to be set up, as this sche¬ matically in FIG. Leaves ^"14 refer to. This includes the length-cutting device 109 with the drainage means 111 directly to the joining line H. The cut-to-length tube billets 94 with cxr-shaped cross-section 64 are transported in a space-saving manner, for example, to a delivery warehouse, where they are calibrated to the desired final cross-section by means of the separate calibration tool 127 ".

The advantages of these exemplary embodiments lie in the saving of transport space. The transport of tube billet pieces 94 with a ώ-shaped cross section requires much less transport space per unit weight than the transport of, for example, downpipe pieces with a round or square cross section. However, without changing anything at the core of the invention, these advantages also result in plastic or cardboard or other metal pipes. The cutting device or the calibration sections for these pipes are adapted to the respective pipe material.

In FIGS. 1a and 1b, only one exemplary embodiment is indicated to explain the overall system. Without changing anything at the core of the invention, other devices for molding the slotted tube can also be used. It is essential that the slotted tube has a co-shaped cross section before the band edges are connected. 2 schematically shows a production plant 1 with the stations A to J. The strip-like material 4 with its strip edges 8 and 9 passes through the individual stations, at which the respective state of the deformation is indicated by dash-dotted lines.

In the decoating station A, the band-shaped material 4 runs off the coil 2 mounted on the rotary axis 3 and reaches the first profiling stand B, which is shown in section in FIG. 3. An upper roller 12 and a lower roller 13 are arranged between an upper crossbeam 10 (not shown in FIG. 2) and a work table 11, between which the strip-shaped material 4 is passed. The upper roller 12 is mounted in upper bearing angles 16 by means of an upper axis of rotation 14. The lower roller 13 is seated on a lower axis of rotation 15 which is mounted in lower bearing angles 17.

As the arrow above the representation of the upper roller 12 indicates, the upper axis of rotation 14 and the lower axis of rotation 15 can be adjusted in the vertical direction. The bearing angles 16 and 17 can also be moved laterally. This makes it possible to replace the upper roller 12 and the lower roller 13 and to replace them with rollers 12, 13 which are larger or longer or shorter in diameter.

In the profiling stand B, as can be seen in FIGS. 2 and 3, the strip edges 8 and 9 are angled downwards. For this purpose, lower edge profiles 18 are provided, which are rotatably mounted on drive shafts 19. The drive shafts 19 are seated in bearing brackets 20, which in turn can be adjusted and tightened laterally. Upper edge profile rollers 21 are mounted on shafts 22, which are also mounted in adjustable bearing angles 23.

All edge profiling rollers 18, 21 and rollers 12 and 13 of the profiling stand B can be set within relatively wide limits so that band-shaped materials 4 of different widths can be deformed.

In the second profiling stand C there is a lower profiling roller 24 and an upper profiling roller between the work table 11 and an upper cross member 27. roll 28 arranged. The lower profiling roller 24 is mounted by means of a drive shaft 25 in bearing brackets 26 which allow the lower profile roller to be replaced.

The upper professional rolls 28 sit on a running axle 29 and have intermediate pieces 31. The rollers 28 can be fastened, for example, by means of pins 30 on the running axle 29, which in turn is mounted on the upper cross member by means of interchangeable or adjustable bearing angles 32. The dash-dotted line in FIG. 2 and the cross section of the band-shaped material 4 in FIG. 4 show the shape of the band-shaped material 4 in the second profiling frame.

The shaping of the slotted tube is continued in the third and fourth profiling frames D, E, as can be seen from the dash-dotted lines in FIG. 2 and the cross-sectional representation of the band-shaped material 4 in FIG. 5. In both profiling stands D and E, movable bearing angles 36 are arranged on the work table 11, in which a drive axis 35 of a lower roller 34 is mounted. Furthermore, lateral cross members 40 and 44 are provided, on which profiling rollers 37 and 41 are mounted by means of bearing angles 39 and 43, respectively. The profiling rollers 37 are fastened on drive axles 38, whereas the profiling rollers 41 of the profiling stand E are mounted on drive axles 42. 5 shows the profiling frame D on the left side of the center line and the profiling frame E on the right side. The profiling rollers 37 and 41 can also be exchanged or adjusted in the profiling frames D and E in order to allow the band-shaped materials of different widths to be formed into a slotted tube. The lower roller 34 can also be easily replaced by another possibly more suitable roller.

Inside the almost finished shaped slit tube, support rods 84 and 85 can be seen in cross section, the meaning of which will be explained later.

The band edges 8 and 9 are brought together in the edge laying stand F, as will be described in detail below. As can be seen in FIG. 2, profiling rollers 41a are provided, which, however, are not shown in FIG. 6 for the sake of clarity in the cross-sectional representation of the edge laying frame F. On the work table 11 is a lower roller 45 by means of its drive shaft 46 is mounted in displaceable and clampable bearing angles 47. The tube wall 48 of the slotted tube with a ^ -shaped cross section 64 lies on this roller. The band edges 8 and 9 are arranged one above the other in the edge laying scaffold F, which results in a seam width 50. For this purpose, they are forced into guide slots as a result of the action of the profiling rollers 41a (FIG. 2). The band edge 8 reaches the guide slot 53, whereas the band edge 9 arrives in the guide slot 54. The guide slots 53 and 54 are arranged at the lower end of a ^Hs' l- esterification 55th In the exemplary embodiment shown, a guide slot 52 is arranged between the guide slots 53 and 54 for the tape edges 8 and 9, which is part of a guide 51 for soldering or adhesive tape 49. Any connecting means for joining the strip edges 8 and 9 can be fed through the guide 51.

The co-shaped cross section 64 has two eyelets, in which the holding rods 84 and 85 are shown in cross section.

In order to ensure the introduction of the band edges 8 and 9 into their guide slots 53 and 54, pressure rollers 56 and 60 are provided, which sit on axes 57 and 51 and are mounted in bearing angles 58 and 62, respectively. These bearing angles 58 and 62 are displaceable and can be clamped on upper cross members 59 and 63, respectively.

The edge-laying scaffold F, as shown in particular in FIG. 6, is also designed such that band-shaped materials 4 of different widths are processed and can be shaped into a slotted tube with an o-shaped cross section 64.

2, with a lower roller 65, a transport wheel 66 ^" , limiting rollers 67 on adjustable axes 68. The finished shaped slotted tube 69 appears behind this end adjusting device and gets into the Joining section H, in which a tube billet 70 is assembled from the slotted tube 69. The joining section H shown in Fig. 2 is only mentioned, for example, in the joining section F in a manner not shown, welding, gluing or soldering of the Band edges 8 and 9 take place. - 15 "

According to FIG. 2, transport wheels 71 are mated in the joining section H with counter-rollers 7, through which the tubular billet 70 is transported further. Heating gas nozzles 73 and cooling air nozzles 74 are also indicated, by means of which the strip edges are joined with the interposition of solder material 49.

The calibration section J follows the joining section H, behind which the pipe appears in its final form as a longitudinal seam pipe 94 with a longitudinal seam 95. The transport through the calibration path J takes place through drive wheels 82 in connection with running wheels 89. Details of the calibration path J are explained in connection with FIGS. 7 and 8. The frameworks B to E are shown in FIG. 2a and the frameworks F and D are enlarged in FIG. 2b. Fig. 2a shows a bridge 86 with a boom 87 to which the support rods 84 and 85 are attached. The bridge 86 with the bracket 87 is arranged between the stands C and D so that the shaping of the slotted tube is not disturbed by the bracket 87.

Fig. 2b shows with dashed lines the pressure rollers 56 and 60, which are effective in connection with the edge laying frame F.

11 shows a holder 55 for the edge laying frame, with a guide slot 97 for the tape edge 8 and a guide slot 98 for the tape edge 9 and a guide slot 99 for soldering or adhesive material 49. With the aid of the guide slots 87, 88 and 89, the band edges 8 and 9 are brought together in such a way that a slot with the slot width 96 remains between them. The soldering material or the connecting material 49 reaches the slot with the slot width 96. In a joining station, not shown, the band edges 8 and 9 are then connected to one another in the same plane.

7 and 8 schematically show a calibration tool 76. In the illustrated embodiment, the support rods 84 and 85 merge into a so-called connection mandrel 75, to which the calibration tool 76 is connected. A dividing line 83 indicates that calibration tools 76 of different shapes can be connected to the connecting mandrel 75. A connection possibility is shown in FIG. 10, which is explained further below. The calibration tool 76 shown in FIG. 7 has a frustoconical part 77 which merges into a cylindrical part 78 which, according to FIG. 8, has a circular cross section. Rollers 79 are provided both in the frustoconical part 77 and in the cylindrical part 78, which facilitate calibration of the bar stick 70, which is only indicated. The rollers 79 are let into the parts 77 and 78 of the calibration tool 76 in a manner known per se. Instead of the indicated rollers 79, balls or rollers can also be used.

At the end of the calibration tool 76, a shaped piece 88 is indicated in FIG. 7, through which the pipe to be shaped is given the final shape.

12 shows cross-sectional shapes that can be produced with a calibration tool 76, depending on the shape. A round cross-section 100 can be achieved with the calibration tool 70 according to FIGS. 7 and 8. With a correspondingly shaped other calibration tool, the production of longitudinal seam tubes with a square cross section 101, a rectangular cross section 102 or a hexagonal cross section 103 is possible. All other conceivable cross sections can be produced without changing anything at the core of the invention.

FIG. 9 shows a longitudinal seam tube 94 or a tube billet 70 with a - shaped cross section 64. The holding rods 84 and 85 for the calibration tool 76 can be clearly seen. Without changing anything at the core of the invention, the calibration tool 76 can also be held only by a holding rod 84 or 85. In special exemplary embodiments, the support rods 84 and 85 can also be replaced by chains. A calibration tool 76 can also be held by only one chain.

9 clearly shows the band edges 8 and 9 which are held together by means of a soldering or adhesive tape or another connecting means 49. In the illustrated embodiment, the band edge 9 lies on the tube wall 48. The longitudinal seam 95 has a so-called seam or slot width 96. Driving wheels 82 are indicated in FIG. 7. In top view, a running wheel 89 can also be seen.

8 shows a section through the calibration tool 86 along the line VIII / VIII. Both the drive wheels 82 and the running wheels 89 are provided with elastic running surfaces 91, which bring about a secure movement drive or an elastic pressure of the tubular bump 70 on the rollers 79. The running wheels 89 are mounted on axes that are not labeled. The drive wheels 82 are seated on drive shafts 90, which in turn are supported in bearing blocks 92, which are adjustably seated on only indicated guide blocks 93.

10 shows a possibility of releasably connecting a calibration tool 76 to the connecting mandrel 75. For this reason, a threaded shoulder 75a is provided on the connecting mandrel 75, which corresponds to a threaded shoulder 76b on a shoulder 76a on the calibration tool 76. The threaded shoulder 75a can have left-hand thread 116, the threaded shoulder 76b can have right-hand thread 117. Both threads can be screwed together by a connecting sleeve 83a. In order to ensure a secure hold, a shoulder 118 with a recess 118a is provided on the threaded shoulder 76b, on which a pin 119 is provided. A bore 119a in the threaded shoulder 75a corresponds to the pin 119 on the threaded shoulder 76b. A groove 121 in the pin 119 and a spring 120 can be provided to prevent rotation. It can be seen in particular from FIG. 10 that any calibration tools 76 can be releasably connected to the connecting mandrel 75. The connecting sleeve 83a can screw the threaded attachments 75a and 76b together and separate them.

13 shows a schematic illustration of a carriage 113 which can travel over a floor 114. For this purpose, the lefette 113 is equipped with wheels that are not labeled and a connection to a traction device that is also not labeled. In a manner known per se, the mount can also have an unillustrated self-propulsion. All the essential frameworks A to J of the device according to the invention are constructed on the carriage 113. The carriage 113 with the stands A to J is moved in the direction of travel 112. In this case, an endless tube 115 is dispensed and placed, for example, in a trench (not shown) within the base 114. In this way, the endless tube 115 can be introduced into the soil 114, for example in agricultural operations.

Finally, FIG. 14 shows a separate calibration path K with a calibration tool 127 which is fastened to a push rod 128 which can be moved back and forth in the direction of the double arrow 129. The calibration tool 127 is equipped with tips 125 and 126, only indicated in FIG. 14, which penetrate into the eyelets of the OO-shaped cross section 64 of the longitudinal seam tube 94. The longitudinal seam tube 94 is held by adjustable end stops 122 and 124 and between adjustable guide rollers 123.

The separate calibration tool 127 in the separate calibration path K can be designed such that longitudinal π seam tubes 94 with the square, rectangular, hexagonal cross sections 100 to 103 shown in FIG. 12 can be formed in the separate calibration path K.

In this way, it is possible to transport longitudinal seam pipes 94 with an originally co-shaped cross section 64 and in separate calibration sections K to desired cross sections according to Flg. Thorn 12.

List of terms used

1 production system C second profiling stand A decoiling station 24 lower profiling roller

2 Coil 25 drive shaft

3 axis of rotation 26 bearing bracket

4 band-shaped ^" material 27 upper traverse

5 Follower coil 28 upper roll

6 Direction of insertion 29 axis

7 Direction of insertion 30 pin

8 band edge 31 intermediate piece

9 belt edge 32 bearing bracket

B first roll stand D, E third and fourth roll stand 0 upper crossbeam 33 strut to 27 1 work table 34 lower roll 2 upper roll 35 drive shaft 3 lower roll 36 bearing bracket 4 upper rotation axis 37 profiling roller 5 lower rotation axis 38 drive shaft 6 upper bearing bracket 39 bearing bracket 7 lower bearing bracket 40 lateral cross member 8 lower edge profiling roller 41 profiling roller 9 drive shaft 41a profiling roller 0 bearing bracket 42 drive axle 1 upper edge profiling roller 43 bearing bracket 2 shaft 44 lateral cross member 3 bearing bracket F edge laying scaffold 5 lower roller 76b threaded shoulder 6 drive shaft 77 frustoconical part 7 bearing bracket 78 cylindrical part 8 tube wall 79 rollers 9 soldering or adhesive tape 80 storage of a roller 79 0 seam width 81 storage of a roller 79 1 guide for soldering or adhesive tape 82 drive wheel 2 guide slot 83 Dividing line 3 guide slot for band edge 8 83a connecting sleeve 4 guide slot for band edge 9 84 support rod 5 bracket 85 support rod 6 pressure roller 86 bridge 7 axis 87 bracket 8 bearing bracket 88 fitting 9 upper cross member 89 impeller 0 pressure roller 90 drive shaft 1 axis 91 elastic tread 2 bearing bracket 92 bearing bracket 3 upper crosshead 93 guide block 4 ° α cross section 94 longitudinal seam tube G final adjustment device 95 longitudinal seam 5 lower roller 96 slot width 6 transport wheel 97 guide slot for belt edge 8 7 limiting rollers 98 guide slot for belt edge 9 8 adjustable axes 99 guide slot 9 slot tube 100 round cross section H joining line 101 square square cut 0 tube billet 102 rectangular cross section 1 transport wheel 103 hexagonal cross section 2 counter roller 104 supply roll for connecting means 3 heating gas nozzle 105 frame 4 cooling gas nozzle

J Calibration section 106 transport chain 5 connecting mandrel 107 motor a threading attachment 108 control and regulating device 6 calibration tool 109 cutting device a attachment 110 flying saw 111 drain device

112 direction of travel

113 gun carriage

114 floor

115 continuous tube

116 left-hand thread

117 right-hand thread

118 approach 118a screwing

119 cones

119a bore

120 spring

121 groove

K separate calibration track

122 adjustable end stop

123 adjustable guide roller

124 adjustable end stop

125 top

126 top

127 calibration tool

128 push bar

129 double arrow

Claims

1. A method for producing longitudinal seam tubes from strip-shaped material such as sheet metal, cardboard, plastic or the like, using a decoating station, a device for molding a slotted tube, a device for joining the strip edges to a longitudinal seam, and a cutting station and / or a calibration section, characterized in that after decoiling, the band-shaped material is molded into a tube billet with an approximately co-shaped cross-section with side-by-side or overlapping band edges, at least one of which rests on the tube wall, that the band edges then pass through Welding, soldering, gluing, tacking, folding, double folding or the like. after which subsequently the tube billet with <-förmigern cross section inthe Kalibrierstreckeaufeinen desired cross-section is aufgedornt are joined together with the assistance of connection _^ material and optionally under temperature and / or pressure.

2. The method according to claim 1, characterized in that after assembling the band edges of the tube billet pieces of desired length are lengthened and, if appropriate after an intermediate transport, are thorned to the desired cross section in a special calibration path.

3. Device for the production of longitudinal seam tubes from band-shaped material. such as sheet metal, cardboard, plastic or the like. with a decoating station, a device for shaping a slotted tube, a device for joining the strip edges into a longitudinal seam, and a cutting station and / or a calibration path, characterized in that the device for molding the slotted tube (69) includes a molded part (B - G) by means of which a tube billet with a θ-shaped cross section (64) can be produced and at least one band edge (8, 9) on the latter opposite pipe wall (48) can be created that this pipe wall (48) is used when joining the strip edges (8, 9) as a work surface, and that in the calibration section (J, K) a calibration tool (76, 127) for forming a any pipe cross-section (100-103) is provided.

4. The device according to claim 3, characterized in that the Vorrich¬ device for molding the slotted tube (69) is a roll former with several profiling stands (B - G).

5. The device according to ^' claim 4, characterized in that the Profi1ie- scaffolding (B - G) rollers (13,24, 34,45, 65) and interchangeable and / or adjustable lateral profiling rollers (18,21, 28,37, Include 46,56, 60, 67) for the marginal edges (8, 9) of the band-shaped material (4).

6. Device according to the claims _. 4 and 5, characterized in that some of the lower rollers (13, 24, 34, 45, 65) are operatively connected to corresponding upper rollers (12, 28).

7. Device according to claims 4-6, characterized in that the lower (13, 24, 34, 45, 65) and / or upper rollers (12, 28) are replaceable or adjustable.

8. The device according to claim 7, characterized in that the interchangeable and / or adjustable rollers (13, 24, 34, 45, 68; 12, 28) or rollers on angles (16, 17, 20, 23, 26 , 32, 36, 39, 43, 47, 58, 62) are supported, which can be tightened relative to their fastenings (10, 11, 27, 31, 56, 63, 68) and are adjustable in the released state.

9. The device according to claim 8, characterized in that the last Ge ¬ skeleton of the roll former an edge laying scaffold (F) with guide slots (53,54) or guide rollers for the band edges (8, 9).

10. The device according to claim 9, characterized in that the guide slots (53, 54) for the band edges (8, 9) are arranged one above the other with the seam width (50) displaced bottom surfaces.

11. The device according to claim 9, characterized in that the guide slots (97, 98) for the band edges (8, 9) are arranged side by side with a distance of their Bodeπflachen which corresponds to the slot width (96).

12. The apparatus according to claim 11, characterized in that the guide slots (53, 54; 97, 98) for the band edges (8, 9) with a guide slot (51, 99) for a connecting means (49) are combined .

13. Device according to claims 3-12, ^' characterized in that a joining section (H) for joining the band edges (8, 9) is provided behind the edge laying frame (F) and an adjusting device (G).

14. The apparatus according to claim 13, characterized in that the joining stretch (H) opposite transport wheels (71) and counter-rollers (72) and - in alignment with the longitudinal seam (95) - includes heating gas nozzles (73) and cooling gas nozzles (74).

15. Device according to claims 3-15, characterized in that a calibration section (J) with a calibration tool (76) is provided behind the joining section (H).

16. The apparatus according to claim 15, characterized in that the calibration tool (76) is a calibration mandrel which is fastened by means of fastening means (84, 85) to the bracket (87) of a bridge (86) which is above the molded part (B - G) is arranged.

17. The apparatus according to claim 16, characterized in that the fastening means or the like from a chain or a rope. exists, which runs through an eye of the α-shaped cross section (64) of the tube billet (70). - a ^'■ ~

18. The apparatus according to claim 16, characterized in that the fastening means of two chains, ropes or the like. exists, each through an eyelet of the co-shaped cross section (64) of the Rohrkπüppels (70).

19. The apparatus according to claim 16, characterized in that the fastening means consists of a holding rod (84 or 85) which runs through an eyelet of the o-shaped cross section (64) of the tubular billet (70).

20. The apparatus according to claim 16, characterized in that the fastening means consist of two support rods (84, 85) which each pass through an eyelet of the c-shaped cross section (64) of the tubular billet (70).

21. Device according to claims 15 and 16, characterized in that the calibration mandrel consists of a cylindrical rear part (78) and a front, frustoconical part (77) with an extension (76a) which can be detachably connected to a connecting mandrel (75) to which the fastening means (84, 85) are connected.

22. The apparatus according to claim 21, characterized in that a fitting (88) is connected to the end of the cylindrical rear part (78) of the calibration tool (76).

23. Device according to claims 21 and 22, characterized in that in the surface of the calibration tool (76) rollers (79) or balls are embedded.

24. Device according to claims 3 - 23, characterized in that on the calibration tool (76) has a threaded shoulder (76b) with right or left hand thread (116, 117) and on the connecting mandrel (75) a threaded shoulder (75b) with left- or right-hand thread (117, 116) is provided which sits in a connecting sleeve (83a) provided with corresponding internal threads.

25. The device according to claim 24, characterized in that on the threaded shoulder (76b) of the calibration tool (76) has a smooth shoulder (76a) with a pin (119) and a threaded shoulder (75b) on the connecting mandrel (75) Screw-in (118a) for the shoulder (76a) and a bore (119a) for the pin (119) are provided.

26. The apparatus according to claim 25, characterized in that in the Bohrμng (119a) a groove (121) and in the pin (119) a spring (120) are provided.

27. The apparatus according to claim 3, characterized in that the Entcoilsta¬ tion (A), the molded part (3 -G), the joining section (H) and the calibration section (J) on a carriage (113) are mounted on the end of which an endless tube (115) can be deposited.

28. Device according to claim 3, characterized by a separate calibration path (K), the adjustable end stops (122, 124) and adjustable guide rollers (123) for fixing a longitudinal seam tube (94) with an o-shaped cross section (64) and a calibration tool (127) which can be moved back and forth within the longitudinal seam tube (94) is provided.

29. The device according to claim 28, characterized in that the Kali¬ brierwerkzeug (127) is detachably connected to a push rod (128).

30. Device according to claims 28 and 29, characterized in that a mandrel (130) with one or more tips (125, 126) are provided on the calibration tool (127), which - in the eyes of the co-shaped cross-section (64 ) of the longitudinal seam tube (94).