EP0429815A1 - Dispositif pour formage d'une bride ou similaire, en particulier à la fin d'un tube métallique à paroi mince - Google Patents

Dispositif pour formage d'une bride ou similaire, en particulier à la fin d'un tube métallique à paroi mince Download PDF

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Publication number
EP0429815A1
EP0429815A1 EP90119581A EP90119581A EP0429815A1 EP 0429815 A1 EP0429815 A1 EP 0429815A1 EP 90119581 A EP90119581 A EP 90119581A EP 90119581 A EP90119581 A EP 90119581A EP 0429815 A1 EP0429815 A1 EP 0429815A1
Authority
EP
European Patent Office
Prior art keywords
roller
rollers
diameter
small
flange
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP90119581A
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German (de)
English (en)
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EP0429815B1 (fr
Inventor
Xaver Lipp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT90119581T priority Critical patent/ATE88386T1/de
Publication of EP0429815A1 publication Critical patent/EP0429815A1/fr
Application granted granted Critical
Publication of EP0429815B1 publication Critical patent/EP0429815B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
    • B21D19/046—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of tubular products

Definitions

  • the invention relates to a device for forming a flange or the like, in particular at the end of a thin-walled metal tube with two rollers forming a gap and which can be pressed against one another by means of an infeed device and which are mounted on one side and to which a drive device is assigned.
  • flange width that can be achieved is so small that it is usually not sufficient to cover the flange with another flange, a plate or the like screw or rivet.
  • the invention is therefore based on the object to provide a device for forming a flange or the like, for example at the end of a thin-walled metal tube, in particular a tube made of sheet metal, which allows a larger flange width, which is also sufficient for screwing or riveting to reach.
  • a device having the features of claim 1.
  • the material zone passing through the roller gap for example the end zone of a tube, becomes increasingly so rolled out as far as is necessary to achieve the lengthening of the end zone in the circumferential direction required for the desired flange width.
  • the small-diameter roller is supported on the side facing away from the nip by at least one additional, larger-diameter supporting roller, it is not difficult to transmit high forces in the radial direction of this roller via the small-diameter roller. It is thus possible, for example, to form an angle profile bar or a flank bar into a ring with a flange.
  • the guide roller that can be placed on the inside of the tube can be pivoted by hand or by motor, for example by means of a working cylinder, the part of the tube lying outside the nip in the dimensions corresponding to the rolling out of the end zone relative to the end zone, whereby can also achieve a very small bending radius at the transition from the cylindrical section of the tube to the flange.
  • the desired rolling out of the end zone can be achieved without problems even if only one of the two rolls forming the nip is designed as such a small diameter, the other roll thus has a much larger diameter and therefore no support by a backup roll requirement.
  • the diameter of the roller or rollers of small diameter is preferably in the range between 5 mm and 40 mm, in particular in the range from 5 mm to 20 mm.
  • the lateral surface of the smaller-diameter roller advantageously tapers.
  • the tube then needs to be pivoted less the amount of the cone angle, for example only by 85 °, which is possible without difficulty.
  • a roll gap narrowing in the longitudinal direction can be provided, for example with the aid of a roll according to claim 6.
  • rollers of large diameter are in gear connection with the drive device, and driving the roller or rollers of small diameter by means of two support rollers also allows sheets with thickenings, for example weld seams, to be deformed without problems.
  • the drive be formed according to claim 10.
  • the one of the two large rolls is mounted in a translationally movable carriage.
  • This slide can be moved, for example, by means of a threaded spindle running in the direction of movement of the slide. But it can also be provided in a simple manner a deflection of the displacement force according to claim 12 if, for example, the operator can operate the threaded spindle more conveniently during manual delivery.
  • other arrangements of the deliverable roller that allow delivery for example on a swivel lever, can also be considered.
  • each existing roller of small diameter is overhung in a holder which also carries guide bodies which improve the entry of the end section of the tube to be formed into a flange into the roller gap. Securing the overhung roller against displacement in the axial direction is possible in a simple manner by the measures according to claim 8. It is also advantageous to mount the holder so as to be pivotable about an axis parallel to the axis of rotation of the roller of small diameter, in order to keep the roller of small diameter in contact with its support roller by means of a prestressed spring or the like.
  • an adjustable stop plate according to claim 17 is provided in a preferred embodiment. So that the pipe end always lies against this stop plate in the roll nip, the pipe is preferably slightly inclined relative to the axis of rotation of the roll, so that the transport force effective in the roll nip has a component directed against the stop plate.
  • a bracket according to claim 18 which, depending on the rotation of the rolls forming the nip or the supporting rolls, can be pivoted out of an initial position into the position in which the tube encloses the desired angle with the flange.
  • the bracket can also be pivoted by hand in a simple manner.
  • a locking device is expediently assigned to it, which holds it in the position in which the axis of rotation of the guide roller lies parallel to the axis of rotation of the roller of small diameter.
  • a device for forming a flange 10 'to one end of a tube 10, for example a tube made of sheet metal, the diameter of which is in the range between 15 cm and 100 cm, has a machine bed 2 carried by a machine base 1.
  • the one end section of a first shaft 3 is rotatably mounted with a vertical axis of rotation perpendicular to the flat top of the machine bed 2, on which a first gear 4 is fixed at a short distance above the top of the machine bed 2 and at a short distance above this first gear 4 a first, cylindrical support roller 5 are fixedly arranged.
  • the axial length of this support roller 5 is greater than the maximum width of the flanges to be molded.
  • the end face of a roller 6 of small diameter lies in the plane defined by the end face of the first support roller 5 facing away from the machine bed 2.
  • this diameter is 20 mm. But it can also be smaller or larger.
  • the diameter must be chosen so that the pressure exerted by means of this roller 6 on the tube 10 is sufficient to roll out the end zone of the tube 10 which serves to form the flange 10 ', that is to say to reduce the wall thickness and accordingly the measured in the circumferential direction Increase the length of the end zone.
  • the roller 6 is supported by a bearing pin 7 which protrudes from the end face of the roller 6 pointing towards the machine bed 2 and engages in a vertical bearing bore in a holder 8.
  • This bearing bore is provided in a vertical leg of the holder 8, the horizontal leg of which is pivotally mounted in the region between its free end and the end connected to the vertical leg about a vertical axis 9 which extends over the top of the Machine bed 2 survives.
  • a prestressed coil spring 11 engages on the one hand on the holder 8 near the free end of its horizontal leg and on the other hand at a fastening point 12 which is fixedly connected to the machine bed 2 and thereby keeps the roller 6 in constant contact with the support roller 5 assigned to it.
  • the vertical leg of the holder 8 is provided with a transverse groove 13 which receives the roller 6 and is open at the top.
  • the material portions 14 which delimit this transverse groove 13 and serve as guide bodies have a wedge-like cross-sectional profile which, on the side facing away from the support roller 5, has a cylindrical curvature which is significantly larger than the curvature of the lateral surface of the roller 6.
  • roller 15 which forms a nip together with the roller 6 and which is designed like the support roller 5, that is to say has a large diameter in comparison with the roller 6.
  • the end face of the rollers 15 pointing away from the machine bed 2 is aligned with the free end faces of the support roller 5 and the roller 6.
  • the roller 15, whose axial length is equal to that of the support roller 5, is, like the latter, fixedly arranged on a vertical second shaft 16, which is adjacent the end of the roller 15 facing the machine bed 2 carries a fixed second gear 17 and is rotatably supported about its one end section in a carriage 18.
  • This translationally movable carriage 18 is arranged in an upwardly open recess 19 of the machine bed 2, which is provided with lateral guides which engage in a form-fitting manner in corresponding guides of the carriage 18. Thanks to the carriage 18, the roller 15 can be used to change the size of the roller 6 and the roller 6 formed nip against the roller 6 out or moved away from this. In the exemplary embodiment, this movement takes place by means of disc springs 21.
  • the outward-facing end of the carriage 18 forms an inclined plane which, with the direction of displacement of the carriage 18, encloses an angle of less than 90 °, in the exemplary embodiment approximately 80 °.
  • this inclined plane lies the correspondingly inclined side surface of a slide 22, the other side surface of which forms an angle of 90 ° with the direction of displacement of the slide 18 and bears against a support wall 23 of the machine bed 2 which also extends in this direction.
  • the slide 22 On its underside, the slide 22 has a guide rail 22 'which engages in a form-fitting manner in a guide groove of the machine bed 2, which extends at right angles to the direction of displacement of the carriage 18.
  • the slider 22 is attached to a traction spindle 24 extending in its direction of displacement, which is rotatably but axially immovably mounted in the machine bed 2 and carries a handwheel 25, a crank or the like on its end section emerging from the front of the machine bed 2 facing the user.
  • a threaded end section of the tension spindle 24 penetrates a bore of the slide 22, in which a threaded body 26 is fixedly arranged, with the thread of which the threaded portion of the tension spindle 24 is engaged.
  • a rotary movement of the tension spindle 24 in a sense which causes the slide 22 to be displaced towards the handwheel 25, the carriage 18 is advanced against the roller 5. Since there is no self-locking between the slide 18 and the slide 22, the plate springs 19 push the slide 18 and the roller 15 carried by it away from the roller 5 when the tension spindle 24 rotates in the opposite direction.
  • the two gear wheels 4 and 17 are in engagement with a third gear wheel 27, the shaft of which is also rotatably mounted parallel to the shafts of the gear wheels 4 and 17 in the machine bed 2.
  • a gear motor 30 flanged from below to the machine bed 2 is coupled, which in the exemplary embodiment is a pole-changing asynchronous motor which can be controlled by means of a foot switch. If a speed setting is not necessary, a motor can of course also be used which can only be operated at a single speed. Likewise, other means can be provided to change the speed of the geared motor 30 instead of a pole switchability.
  • the gears 4, 17 and 27 and the pinion 28 are covered by means of a cover 31 placed on the machine bed 2, which also covers the horizontal leg of the holder 8.
  • a stop plate 32 which is adjustable in the axial direction of the rollers, that is to say in the exemplary embodiment in the vertical direction, is provided, which, as shown in FIG. 5 shows the support roller 5 reaches up to the material portions 14 formed by the holder B.
  • Vertical support rods 33 which engage in bores in the bearing bed 2 and which are adjustable in height carry the stop plate 32.
  • a bearing cheek 34 projects in the vertical direction over the upper side of the machine bed 2.
  • these bearing cheeks 34 are each provided with a bearing bore for the rotatable mounting of a pin.
  • the center of the two bearing bores defines a pivot axis which runs perpendicularly on the plane defined by the axes of rotation of the support roller 5, the roller 6 and the roller 15 and is aligned with the roller gap in the plane defined by the end faces of these rollers.
  • the pivots mounted rotatably in the bearing cheeks 34 each connect one of the two legs 35 of a bracket designated as a whole with 36 to the bearing cheeks 34.
  • the two legs 35 of the same design each consist of a cylindrical tube. At the upper end, the legs 35 are connected to one another by a yoke 37, which in the exemplary embodiment has a rectangular cross section. The length of the legs 35 is selected so that the distance of the yoke 37 from the stop plate 32 is greater than the maximum length of the tubes 10 to be processed.
  • a guide roller 38 is rotatably mounted in yoke 37 with an axis parallel to legs 35 and is displaceable in the axial direction. Securing against axial displacement is symbolically represented in FIGS. 1 and 2 by an adjusting ring 39, which holds the lower end of the guide roller 38 at a short distance above the end face of the roller 6 facing it and allows the guide roller 38 to be displaced upward.
  • the axis of rotation of the guide roller 38 lies in the vertical plane defined by the axes of rotation of the support roller 5 and the rollers 6 and 15. If the legs 35 of the bracket 36 are in the vertical position shown in FIGS. 1 and 2, in which they can be held by a non-illustrated, non-positive locking device, a narrow zone of the lateral surface of the guide roller 38 is flush with the one in contact the end zone of the tube 10 coming zone of the outer surface of the roller 6. The inner surface of the tube 10 is therefore supported above the zone currently in the nip by the guide roller 38, in the exemplary embodiment over the entire length of the cylindrical part of the tube 10. If 1 during the formation of the flange 10 'of the bracket 36 is gradually pivoted clockwise in a direction of view according to FIG. 1 in the position shown there with a dash-dotted line, a very small bending radius can be achieved at the transition from the cylindrical part of the tube 10 to the flange 10' .
  • the tube 10 experiences additional guidance during the forming of the flange 10 'by two additional guide rollers 40, which are arranged parallel to the guide roller 38, but bear against the outside of the tube in front of or behind the nip.
  • These additional guide rollers 40 are rotatably supported by a support arm 41, which is height-adjustable and pivotable and connected to the adjacent leg 35 with a variable effective length by means of a clamping device 42.
  • the additional guide rollers 40 can thus always be brought into the correct position even with pipes of different diameters.
  • the guide roller 38 In order to be able to bring the tube 10 into the starting position shown in solid lines in FIG. 1, in which the lower end section engages in the nip, the guide roller 38 has to be temporarily withdrawn upwards.
  • the roll gap is formed by two rolls 106 of small diameter, which are designed and mounted like the roll 6. Both rollers 106 are supported by a supporting roller 105 and 115, the latter being deliverable like roller 15 of the first embodiment.
  • the two rollers 106 are each mounted in a holder which is designed like the holder B of the first exemplary embodiment. For the rest, reference can be made to the explanations for the first exemplary embodiment because there are no differences to this exemplary embodiment.
  • the flange to be manufactured should have a decreasing thickness towards its outer edge, because of the rolling out If this outer edge has to increase, it is possible, as shown in FIG. 8, to form a roller gap by means of a roller 206 of small diameter which tapers conically towards its free end and which becomes ever narrower in the opposite direction.
  • a roller 206 of small diameter which tapers conically towards its free end and which becomes ever narrower in the opposite direction.
  • the cone angle of the nip and thus the cone angle of the roller 206 is shown exaggerated for reasons of clarity.
  • the roller 215 which forms the nip together with the roller 206 has a cylindrical outer surface.
  • the support roller 205 assigned to the roller 206 has a conical outer circumferential surface with a corresponding cone angle, which ensures that the roller 206 is supported over its entire length.
  • a conical lateral surface of the roller of small diameter can of course also be provided if, as shown in FIG. 7, the roller gap is formed by two such rollers.
  • a conical configuration of the roller 208 has the advantage over an equally possible conical configuration of the roller 215 that only the small roller 206 needs to be exchanged for different shapes of the roller gap.
  • the fourth exemplary embodiment of a device for forming a flange on a pipe end shown in FIGS. 9 and 10 essentially differs from the first exemplary embodiment only in that the small-diameter roller 306, which together with the larger-diameter, driven roller 315 den Roll gap 320 forms, is supported by two support rollers 305, which are also larger in diameter, on the side facing away from the roller 315.
  • the two support rollers 305 are designed and driven identically. Furthermore, as shown in FIG. 9, they are arranged symmetrically with respect to the smaller diameter defined by the longitudinal axis of the roller 306 and the longitudinal axis of the plane 315 having a larger diameter.
  • rollers 305 are driven by a gear transmission, of which only three intermediate gears 327 are shown in FIG. 9, sheets with thickenings, such as are caused, for example, by welds, are easily transported through the roller gap 320.
  • the larger diameter gear 315 is rotatably disposed on one end portion of a drive shaft 316.
  • a gear 317 which meshes with one of the intermediate gears 327, also sits in a rotationally fixed manner on the drive shaft 316 below the gear 315.
  • the end portion of the lateral surface of the roller 315 delimiting the roller gap 320 forms a cone tapering towards the free roller end.
  • the area of the lateral surface of the roller 306 of smaller diameter delimiting the roller gap 320 forms a cone which widens towards the free end of this roller, although the cone angle of the roller 306 with a smaller diameter is somewhat smaller than the cone of the roller 315, so that the width of the roller Roller gap 320 decreases with increasing distance from the free end face of rollers 306 and 315.
  • the roller 306 of smaller diameter is overhung on a pin 307 which protrudes from a support arm 344.
  • the end section facing the support arm 344 is designed as a radially projecting annular collar 306 ', which with play in an annular groove 315' of the roller 315 and, 10 shows, in each case a throat 305 'of the two support rollers 305 engages positively with play.
  • the two support rollers 305 which are arranged in a rotationally fixed manner on a shaft 303, are each against axial by means of a screw 345
  • Each gear 304 which is also arranged on the shaft 303 in a rotationally fixed manner, is in engagement with one of the intermediate gears 327, one of which is driven by the electric motor (not shown).
  • a tube to which a radially projecting flange is to be formed does not need to be pivoted into the plane defined by the free end surfaces of the rollers, since the roller gap with this surface includes an angle of less than 90 °.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Metal Extraction Processes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP90119581A 1989-11-25 1990-10-12 Dispositif pour formage d'une bride ou similaire, en particulier à la fin d'un tube métallique à paroi mince Expired - Lifetime EP0429815B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90119581T ATE88386T1 (de) 1989-11-25 1990-10-12 Vorrichtung zum formen eines flansches oder dergleichen, insbesondere am ende eines duennwandigen matallrohres.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3939016 1989-11-25
DE3939016A DE3939016A1 (de) 1989-11-25 1989-11-25 Vorrichtung zum formen eines flansches oder dergleichen, insbesondere am ende eines duennwandigen metallrohres

Publications (2)

Publication Number Publication Date
EP0429815A1 true EP0429815A1 (fr) 1991-06-05
EP0429815B1 EP0429815B1 (fr) 1993-04-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119581A Expired - Lifetime EP0429815B1 (fr) 1989-11-25 1990-10-12 Dispositif pour formage d'une bride ou similaire, en particulier à la fin d'un tube métallique à paroi mince

Country Status (3)

Country Link
EP (1) EP0429815B1 (fr)
AT (1) ATE88386T1 (fr)
DE (2) DE3939016A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102553997A (zh) * 2012-01-13 2012-07-11 浙江明新风机有限公司 一种金属筒体的折边装置
CN103480711A (zh) * 2013-09-22 2014-01-01 浙江惠创风机有限公司 一种风筒自动成型装置
CN104492894A (zh) * 2014-12-17 2015-04-08 浙江聚英风机工业有限公司 一种全自动高效翻边机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102847711A (zh) * 2012-09-18 2013-01-02 昆山坤林彩钢板活动房有限公司 管径收缩机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1634057A (en) * 1925-03-06 1927-06-28 Taylor James Hall Machine for shaping pipes
DE3101534A1 (de) * 1980-02-07 1981-12-03 Dresser Industries, Inc., 75221 Dallas, Tex. Werkzeug zum einwalzen und aufweiten von rohren, beispielsweise solcher von waermetauschern
EP0080438A2 (fr) * 1981-11-19 1983-06-01 Pietro Maggi Machine pour réaliser des cornières aux pièces en tôle de forme cylindrique creuse
CH650706A5 (de) * 1981-06-05 1985-08-15 Fischer Ag Georg Ausweitungs- und boerdelgeraet fuer rohre.
US4862719A (en) * 1988-01-20 1989-09-05 Comeq, Inc. Cylinder flanging machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1634057A (en) * 1925-03-06 1927-06-28 Taylor James Hall Machine for shaping pipes
DE3101534A1 (de) * 1980-02-07 1981-12-03 Dresser Industries, Inc., 75221 Dallas, Tex. Werkzeug zum einwalzen und aufweiten von rohren, beispielsweise solcher von waermetauschern
CH650706A5 (de) * 1981-06-05 1985-08-15 Fischer Ag Georg Ausweitungs- und boerdelgeraet fuer rohre.
EP0080438A2 (fr) * 1981-11-19 1983-06-01 Pietro Maggi Machine pour réaliser des cornières aux pièces en tôle de forme cylindrique creuse
US4862719A (en) * 1988-01-20 1989-09-05 Comeq, Inc. Cylinder flanging machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102553997A (zh) * 2012-01-13 2012-07-11 浙江明新风机有限公司 一种金属筒体的折边装置
CN103480711A (zh) * 2013-09-22 2014-01-01 浙江惠创风机有限公司 一种风筒自动成型装置
CN103480711B (zh) * 2013-09-22 2015-07-01 浙江惠创风机有限公司 一种风筒自动成型装置
CN104492894A (zh) * 2014-12-17 2015-04-08 浙江聚英风机工业有限公司 一种全自动高效翻边机

Also Published As

Publication number Publication date
ATE88386T1 (de) 1993-05-15
DE59001253D1 (de) 1993-05-27
EP0429815B1 (fr) 1993-04-21
DE3939016A1 (de) 1991-05-29

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