EP2691195B1 - Tête de pliage pour plier des pièces en forme de barre et de tube - Google Patents

Tête de pliage pour plier des pièces en forme de barre et de tube Download PDF

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Publication number
EP2691195B1
EP2691195B1 EP12700601.3A EP12700601A EP2691195B1 EP 2691195 B1 EP2691195 B1 EP 2691195B1 EP 12700601 A EP12700601 A EP 12700601A EP 2691195 B1 EP2691195 B1 EP 2691195B1
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EP
European Patent Office
Prior art keywords
bending
mandrel
head according
plate
bending head
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.)
Not-in-force
Application number
EP12700601.3A
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German (de)
English (en)
Other versions
EP2691195A1 (fr
Inventor
Stefan Fries
Jörg Möck
Frank Weiblen
Carina BAIER
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Wafios AG
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Wafios AG
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Publication date
Application filed by Wafios AG filed Critical Wafios AG
Publication of EP2691195A1 publication Critical patent/EP2691195A1/fr
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Publication of EP2691195B1 publication Critical patent/EP2691195B1/fr
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    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire

Definitions

  • the invention relates to a bending head for bending rod and tubular workpieces, with a rotatable about an axis holder which carries a bending mandrel at one axial end, and with at least two other tools, each having a holding body with the bending mandrel facing the axial End include a bending pin and each of which, in each case independently of the other tools, is rotatable.
  • a bending head for a bending device for rod and tubular workpieces in which the workpiece is clamped between a central bending mandrel and a relative thereto movable clamping device and bent by pivoting the bending mandrel and the clamping device with clamped workpiece.
  • This known bending head operates with a plurality of axes of rotation, one of which serves to rotate the bending mandrel, while another is associated with the pivoting of the clamping device. Another axis of rotation is intended to cause a clamping movement by radially advancing the clamping device against the workpiece (or back).
  • this known bending machine can be a bending of the workpiece in two opposite bending directions without changing the bending head, but is very complicated and not very flexible when using a once mounted bending mandrel, with complex components can not be produced.
  • a bending machine for rod and tubular workpieces which has a bending head with a circular disc, which carries in its center a bending mandrel and is pivotable about a central bending axis. Further, a jaw is provided which is rotatably mounted about a second axis on the circumference of a turntable, which in turn can be rotated about an axis parallel to the central axis of bending and mounted at a distance from this axis on the circular disc.
  • a bending head of the type mentioned above describes the WO 2010/080522 A2 .
  • This known bending head can work with two or more tools, which are mounted on a turntable on the center of a bending mandrel mounted around it and at a distance from it and formed independently rotatable by their own rotary actuators.
  • This known bending head also allows the production of complicated bending forms, but is very complex in its overall structure at the same time a very large space requirement.
  • the invention aims to develop such a known bending head such that it has a significantly reduced space requirements and a less expensive construction while maintaining its suitability for producing very complex bent parts.
  • the invention proposes a bending head of the type mentioned, in which the holding body of the tools are arranged concentrically to the holder of the bending mandrel and pivotable about its axis of rotation.
  • the holding body of the tools are designed as concentric with each other in running hollow shafts, sitting in the radially innermost of the holder of the bending mandrel rotatable.
  • each tool consists of a holding body with a projecting at the radial end surface bending pin. Since its diameter is usually not very large, and the wall thickness of the holding body to which the bending pin is attached, in the radial direction can also be made relatively small, so that a total in conjunction with the concentric arrangement of the holding body and the mandrel a very considerably smaller space requirement for the bending head according to the invention than in the generic bending head.
  • the holding body of the individual tools and the holder of the bending mandrel in each case independently, are rotatable, can be rotated independently during operation of the mandrel and the bending pins, wherein for each of these elements twisting in both directions of rotation is possible.
  • each of these can have an extraordinary effect due to these three concentrically arranged individual elements taking into account the two possible directions of rotation large variety of different constellations of mandrel and bending pins are achieved with each other, which is given a remarkably large flexibility.
  • the production of very complex bent parts is possible.
  • the holding bodies of the tools are designed as concentrically intermeshing hollow shafts in whose radially innermost the holder of the bending mandrel is rotatably seated, a very small space requirement of the bending head according to the invention is achieved without any restriction of its flexibility.
  • An advantageous embodiment of the bending head according to the invention also consists in that the bending mandrel and / or the bending pins between an active operative position in which they act during bending on the workpiece to be bent, and a non-active rest position parallel to the axis of rotation of the mandrel are adjustable. This ensures that parts of the bending head in addition to the rotational movements that they can perform, are also lowered, which means that the tool rims (single or multiple, independent or shared) or the mandrel lowered below the bending plane and z. B. can be raised again on the other side of an inserted workpiece.
  • a bending pin which is not required for this bending operation, move out by lowering its holding body from the bending plane, so that it can not interfere with the subsequent bending operation.
  • the holding body of the tool with the radially outermost bending pin is rotatably mounted on an upper end wall of a housing and is in driving connection with a first rotary drive mounted on this housing, in particular on its upper end wall.
  • the holding body of the tool with the radially outermost bending pin preferably has an outer toothing, preferably in the vicinity of the upper surface of the end wall of the housing, which is in meshing engagement with a gear connected to the first rotary drive, wherein, again preferred, the first rotary drive on the side facing away from the bending pins of the tools of the upper end wall of the housing is attached thereto.
  • a particularly great flexibility of the bending head according to the invention can be achieved in that the holder for the mandrel as well as the holding body for the other tools are each connected to its own rotary drive, so that a complete independence of their movements can be reached.
  • first rotary drive is connected to a first lifting device, which is designed for stationary mounting on a machine frame of a bending device and, after being mounted there, allows a process of the entire bending head with all its associated facilities parallel to the bending axis ,
  • the holding body of each tool is connected to a device by means of which it can be moved from a non-active rest position to an active operative position (and vice versa), which means moving out of the bending plane or driving it into each of them used tools allows.
  • An advantageous embodiment of the invention also results when the holder of the bending mandrel is connected at its axial end opposite the bending mandrel to a second rotary drive which is attached to a first plate, which in turn by means of a second lifting drive together with the second rotary drive and the holder for the bending mandrel in the direction of the axis of rotation of the latter is movable.
  • a preferred embodiment of the bending mandrel according to the invention also consists in that the first lifting drive comprises a spindle shaft on the output side, on which a spindle nut attached to the first plate is mounted, wherein the spindle shaft with its axially projecting end portion in a second distance from the first plate by a second Plate rotatable, but stationary in the axial direction of the spindle shaft, is mounted, and the second plate the bending mandrel surrounding the holding body of the tool for the radially innermost bending pin at its end facing away from the bending mandrel rotatable opposite her, but fixed fixed in the direction of the axis of rotation bears.
  • This embodiment makes it possible to move the holder for the radially innermost bending pin relative to the mandrel and the holder of the latter in the longitudinal direction of the axis of rotation of the mandrel, thus in particular the bending pin while maintaining the bending mandrel in the bending plane or the mandrel while maintaining the innermost bending pin lower in the bending plane.
  • the second lifting drive preferably comprises on the output side a spindle shaft on which a spindle nut attached to the first plate is seated, wherein the spindle shaft is rotatably mounted with its axially projecting end portion in a second plate spaced a distance from the first plate but stationary in the axial direction of the spindle shaft is and the second plate surrounding the bending mandrel holding body of the tool for the radially innermost bending pin at its end facing away from the bending mandrel axially opposite her rotatable, but held stationary in the direction of the axis of rotation bears.
  • the second plate also carries a third rotary drive, by means of which the holder for the radially innermost bending pin can be driven in the direction of rotation.
  • This makes it possible to mount the drive for the holder for the radially innermost bending pin in a particularly space-saving manner within the overall device.
  • a third lifting drive is provided, by means of which the second plate is longitudinally displaceable in the direction of the axis of rotation of the bending mandrel.
  • all rotary and lifting drives are covered by a downwardly open housing, protruding on the upper end wall of the bending head to the outside.
  • the third lifting drive is preferably provided on the output side with a spindle shaft, on which a spindle nut connected to the second plate is seated, wherein the spindle shaft is rotatably mounted at its axially projecting end, but fixed in the axial direction of the spindle shaft to the upper end wall of the housing.
  • the spindle shaft is rotatably mounted at its axially projecting end, but fixed in the axial direction of the spindle shaft to the upper end wall of the housing.
  • the bending mandrel may be formed in any suitable manner, but is preferably a multi-radius tool or a four-pin tool.
  • Fig. 1 shows in an oblique view quite principally a bending machine 1 for processing rod or tubular workpieces 2, which includes a feed and straightening unit 3 and a bending unit 4, which is mounted in the feed direction after the feed and straightening unit 3.
  • the bending unit 4 comprises a bending head 5, which is mounted within a recess 6 in a bending table 7.
  • the workpiece 2 is initially conveyed in the direction of arrow A by the feed and straightening unit 3 to a guide device 8 upstream of the bending head 5 in which a cutting device 9 (FIG. Fig. 1 and 2 ) is provided.
  • Bending table 7 and feed and straightening unit 3 sit on a base 10.
  • the bending table 7 is arranged obliquely to the floor to allow slipping of the workpiece 2 after processing.
  • Fig. 1 no means for receiving the slipping, machined workpieces 2 is shown.
  • bending head 5 has a centrally disposed bending mandrel 11 which is executed in the embodiment shown as a two-prong tool and at its upper radial end face comprises two mutually 180 ° diagonally offset bending pins 13, 14.
  • the bending pin 13 has a larger diameter than the bending pin 14, so that both bending pins 13, 14 provide two different bending radii available.
  • the two bending pins 13, 14 form together with a mold base 15 a forming mandrel as a bending mandrel 11, wherein the mold base 15 also forms on its outer peripheral surface two diametrically opposite peripheral surfaces, which in turn have two further bending radii.
  • the workpiece 2 can be bent in the upper region of the mandrel 11 by the action of the bending pins 13, 14 or in an underlying plane to the two bending surfaces of the mold base 15 of the bending mandrel 11.
  • the bending mandrel 11 is seated on the upper axial end surface 16 of a cylindrical holder 17, as shown in FIGS Fig. 3 to 6 can be seen, each illustrating a schematic, partially sectioned view of such a bending head 5.
  • the central cylindrical holder 17 of the mandrel 11 sits in turn, like the Fig. 2 to 6 show, rotatable within a trained as a hollow shaft bracket 18, the at her upper, the bending mandrel 11 associated axial end surface 19 carries an axially projecting from this bending pin 20 (see. Fig. 2 and 3 ).
  • the radially outer bracket 21 formed on the bending head 5 forms at its overhead region a radially recessed portion 22 in which the holder 18 is rotatably mounted and at the axial upper end surface 23 in turn an axially projecting bending pin 24 is mounted.
  • the outer holder 21, which carries the radially outer bending pin 24 is mounted on the upper end wall 25 of a downwardly open housing 26, in such a way that it is rotatable relative to this, but immovably mounted in the direction of the axis of rotation 12.
  • the gear 28 is driven by a on the opposite side of the end wall 25 attached to this first rotary drive 29, with which the gear 28 is connected through the end wall 25 therethrough.
  • the first rotary drive 29 is connected by means of a spindle nut 30 attached to it with a rotary spindle 31, which in turn is fixed at its lower end on a stationary machine housing, such as the base 10 of the bending table 7.
  • a stationary machine housing such as the base 10 of the bending table 7.
  • cylindrical holder 17 is connected to the bending mandrel 11 at its opposite axial (lower) end of the latter with a second rotary drive 33, which in turn is attached to its holder 17 facing the axial end to a first plate 34.
  • a spindle nut 35 is further connected, which is in engagement with a rotary spindle 36, which in turn is driven by a second lifting drive 37.
  • the rotary spindle 36 is connected to a second plate 45 in such a way that it is mounted rotatably relative thereto but can not be moved in the longitudinal direction of the rotating spindle 36 relative to the second plate 45.
  • the rotary spindle 36 with its projecting axial end but also on the housing 26 rotatable, but fixed in the direction of its longitudinal axis, be connected, in which case the first plate 34 and the second plate 45 each completely independent of each other vertically are adjustable.
  • the second plate 45 is also connected to the axially lower end surface of the central support 18 such that the latter is rotatably mounted on the second plate 45, but in the longitudinal direction of the rotation axis 12 can not be moved relative to the second plate 45.
  • the second plate 45 is connected on its opposite side of the rotary spindle 36 with respect to the holder 18 to a further spindle nut 38 which meshes with a rotary spindle 39, which is driven at its lower end by a third lifting drive 40.
  • a third lifting drive 40 At its opposite axial (upper) end of the rotary spindle 39 is fixed to the underside of the end wall 25 of the housing 26, and relative to this relatively rotatable, but not in the direction of the longitudinal axis of the rotary spindle 39 against the end wall 25 movable.
  • a third rotary drive 41 fixed at its upper end to the second plate 45 fixed.
  • the third rotary drive 41 can drive an overlying, upper gear 42 which is connected to a non-rotatably attached to the bracket 18 gear (or external teeth 43 formed there) in engagement, so that the middle bracket 18 in the direction of rotation the third rotary drive 41 can be driven.
  • the central support 18, which forms a first tool with the bending pin 20 carried by it (a second tool forms the outer holder 21 with the bending pin 24 carried by it), can thus via the third rotary drive 41 relative to the middle holder 17 and the outer Holder 21 is rotated and raised or lowered by means of the third lifting drive 37 by moving the second plate 45.
  • the central holder 17 with the attached at its upper end bending mandrel 11 is driven via the second rotary drive 33 in the direction of rotation and can be moved by activation of the second lifting drive 37 relative to the second plate 45 parallel to the orientation of the axis of rotation 12 and thus raised or lowered.
  • Fig. 4 is now the bending head 5 off Fig. 3 shown here, here by operating the second linear actuator 37, the spindle nut 35 runs on the rotary spindle 36 down, so that the first plate 34 moves down and consequently the second rotary drive 33 with the coupled thereto cylindrical holder 17 together with mandrel 11 on his Topside after proceeding below.
  • Fig. 5 now shows an adjustment of the bending head 5, wherein the bending mandrel 11 even further than the position in Fig. 4 lowered and also the middle bracket 18 has also been lowered so far that the upper bending pin 20 of the middle bracket 18 is lowered below the bending plane.
  • Fig. 6 finally shows the bending head 5 from Fig. 5 , wherein the position shown there compared to now the central cylindrical holder 17 by activation of the second lifting drive 37 in the opposite direction (compared to that for reaching the position in Fig. 4 ) is extended on the rotary spindle 36 and the meshing with her spindle nut 35, the first plate 34 with the second rotary drive 33 and the seated on her central holder 17 with the bending mandrel 11 at its upper axial end in the direction of its axis of rotation 12 upwards.
  • the mandrel 11 is raised so far that - how Fig.
  • FIGS. 7 to 13 are now shown with the illustrated bending head 5 executable bending sequences.
  • different bending mandrels 11 are used, it is worked in different levels of bending mandrel 11 and there are different bending methods used:
  • FIGS. 7 and 8 show unwinding about a central mandrel 11 having different bending radii and wherein the radially inner bending pin 20, the workpiece 2 bends around a radius of the central bending mandrel 11, while the radially outer bending pin 24 acts as a counter-holder.
  • Fig. 9 shows an arrangement of the bending head 5, in which no longer around the forming jaws of the bending mandrel 11 around, but is bent in its lower bending plane around the mold base 15, which in the embodiment of the Fig. 9 has a circular bending radius.
  • the workpiece 2 is bent around the mold base 15 of the bending mandrel 11 around, again the radially outer bending pin 24 serves as a counter-holder for the workpiece 2 during bending.
  • Fig. 10 shows a bending process in which the bending mandrel 11 is rotated and at the same time a compensating movement of the bending head 5 takes place, in which case the bending pins 24 and 20 together serve as a counter-holder.
  • Fig. 12 shows four stages for rolling the end of a workpiece 2, in which the shortest possible end leg is provided.
  • the bending pin 20 is rotated in the last two stages of the bending mandrel 11 and thus reduces the distance between the bending pin 20 and bending mandrel 11.
  • Fig. 13 a wind process shown.
  • the workpiece 2 is advanced and the bending mandrel 11 is turned against the workpiece 2 by turning it with its larger diameter bending pin 13.
  • the two bending pins 20 and 24 serve as a counterhold on both sides of the workpiece 2.
  • the lowering of a bending pin is always necessary in the bending head 5 according to the invention when it has to be brought under the workpiece 2 on the other side of the same.
  • Fig. 7 are bent in the other bending direction, serving as a backing bending pin 24 and the bending bending pin 20 can be quickly brought under the workpiece 2 on the other side of the same. Likewise, the bending mandrel 11 can be threaded out of the workpiece 2 by the lowering movement possible with it.
  • the bending head 5 in principle also be provided that this in its entirety z. B. also laterally (perpendicular to the conveyed workpiece 2) is movably mounted on the machine position (not shown in the figures). As a result, the flexibility of such a bending head 5 is further increased.
  • the bending pins may be mounted in the bending head 5 shown as a rigid bending pins or as freely rotatable bending rollers. It can also be used bending pins, which is mounted on a rigid bending pin around this rotatable roller. In the embodiments shown in the figures, however, only rigid bending pins are shown.
  • the bending head 5 can be arranged with a vertical orientation of its axis of rotation 12 on the associated bending machine 1. But how the Fig. 1 and 2 Recognize, the bending head 5 is often installed but also with a certain lateral inclination, in which the orientation of the axis of rotation 12 to the vertical at an angle, for example below 20 ° to 30 °, inclined, whereby, in particular also in conjunction with an obliquely arranged bending table 7, a slight removal of the parts after processing by slipping is ensured.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (18)

  1. Tête de pliage (5) pour plier des pièces en forme de barre et de tube (2), ayant un support (17) pouvant tourner autour d'un axe de rotation (12) qui supporte à une extrémité axiale un mandrin de pliage (11) et ayant au moins deux autres outils (18, 20 ; 21, 24) qui comprennent respectivement un corps de support (18, 21) ayant, à son extrémité axiale dirigée vers le mandrin de pliage (11), une broche de pliage (20, 24) et dont chacun peut tourner, respectivement, indépendamment des autres outils, caractérisée en ce que les corps de support (18, 21) des outils sont agencés de façon concentrique par rapport au support (17) du mandrin de pliage (11) et de façon à pouvoir pivoter autour de son axe de rotation (12).
  2. Tête de pliage selon la revendication 1, caractérisée en ce que les corps de support (18, 20) des outils sont réalisés en tant qu'arbres creux s'engagent l'un dans l'autre de façon concentrique, le support (17) du mandrin de pliage (11) reposant de façon pouvant tourner dans celui situé radialement le plus à l'intérieur (18).
  3. Tête de pliage selon la revendication 1 ou 2, caractérisée en ce que le mandrin de pliage (11) et/ou les outils (18, 20 ; 21, 24) peuvent être déplacés entre une position de fonctionnement active, dans laquelle ils agissent sur la pièce (2) à plier lors de l'opération de pliage, et une position de repos non active parallèle à l'axe de rotation (12) du mandrin de pliage (11).
  4. Tête de pliage selon l'une des revendications 1 à 3, caractérisée en ce que sur au moins une broche de pliage (20, 24) est installé un rouleau de pliage pouvant tourner librement autour de celle-ci.
  5. Tête de pliage selon l'une des revendications 1 à 4, caractérisée en ce que le corps de support (21) de l'outil ayant la broche de pliage (24) située radialement le plus à l'extérieur est installé de façon à pouvoir tourner sur une paroi de fermeture supérieure (25) d'un logement (26) et il est en liaison d'entraînement avec un premier entraînement rotatif (29) fixé sur ce logement (26).
  6. Tête de pliage selon la revendication 5, caractérisée en ce que le corps de support (21) de l'outil ayant la broche de pliage (24) située radialement le plus à l'extérieur présente une denture extérieure (27) qui est en prise avec une roue dentée (28) reliée avec le premier entraînement rotatif (29).
  7. Tête de pliage selon la revendication 6, caractérisée en ce que le premier entraînement rotatif (29) est fixé sur le côté de la paroi de fermeture supérieure (25) du logement (26) en opposition aux broches de pliage (20, 24) des outils à celui-ci.
  8. Tête de pliage selon l'une des revendications 1 à 7, caractérisée en ce que le support (17) pour le mandrin de pliage (11), de même que les corps de support (18, 21) pour les outils, sont raccordés respectivement à leur propre entraînement rotatif (33, 41, 29).
  9. Tête de pliage selon l'une des revendications 5 à 8, caractérisée en ce que le premier entraînement rotatif (29) est raccordé à un premier dispositif de levage (32) qui est réalisé en vue d'un montage stationnaire sur un châssis de machine (10) d'un dispositif de pliage (1).
  10. Tête de pliage selon l'une des revendications 3 à 9, caractérisée en ce que le corps de support (18, 21) de chaque outil est raccordé à un dispositif (37, 40) au moyen duquel il peut être déplacé de sa position de repos non active à sa position de fonctionnement active et inversement.
  11. Tête de pliage selon l'une des revendications 1 à 10, caractérisée en ce que le mandrin de pliage (11) est fixé sur son support (17) et les outils sur leurs corps de support (18, 21) de façon interchangeable.
  12. Tête de pliage selon l'une des revendications 3 à 10, caractérisée en ce que le support (17) du mandrin de pliage (11) est raccordé, à son extrémité axiale opposée au mandrin de pliage (11), à un deuxième entraînement rotatif (33), qui est fixé sur une première plaque (34) qui peut pour sa part être déplacée au moyen d'un deuxième entraînement de levage (37), en commun avec le deuxième entraînement rotatif (33) et le support (17) pour le mandrin de pliage (11), dans la direction de l'axe de rotation (12) de ce dernier.
  13. Tête de pliage selon la revendication 12, caractérisée en ce que le deuxième entraînement de levage (37) comprend, du côté de la sortie, un arbre de broche (36) sur lequel est installé un écrou de broche (35) fixé à la première plaque (34), l'arbre de broche (36) étant monté de façon à pouvoir tourner avec sa zone d'extrémité en saillie axiale dans une deuxième plaque (45) située à distance de la première plaque (34), mais de façon fixe dans la direction de l'axe de l'arbre de broche (36), et la deuxième plaque (45) supportant le corps de support (18) entourant le mandrin de pliage (11) de l'outil prévu pour la broche de pliage (20) située radialement le plus à l'intérieur sur son extrémité axiale en opposition au mandrin de pliage (11), de façon à pouvoir tourner par rapport à celle-ci, mais de façon fixe dans la direction de l'axe de rotation (12).
  14. Tête de pliage selon la revendication 13, caractérisée en ce que la deuxième plaque (45) supporte également un troisième entraînement rotatif (41), au moyen duquel le support (18) pour la broche de rotation (19) située radialement le plus à l'intérieur peut être entraîné dans le sens de rotation.
  15. Tête de pliage selon la revendication 14, caractérisée en ce qu'il est prévu un troisième entraînement de levage (40), au moyen duquel la deuxième plaque (45) peut être déplacée en coulissement longitudinal dans la direction de l'axe de rotation (12).
  16. Tête de pliage selon l'une des revendications 5 à 15, caractérisée en ce que tous les entraînements rotatifs (29, 33, 41) et de levage (32, 37, 40) sont recouverts par un logement (26) ouvert vers le bas, sur la paroi de fermeture supérieure (25) duquel la tête de pliage (5) fait saillie vers l'extérieur.
  17. Tête de pliage selon la revendication 16 en combinaison avec l'une des revendications 13 à 15, caractérisée en ce que le troisième entraînement de levage (40) présente, du côté de la sortie, un arbre de broche (39) sur lequel repose un écrou de broche (38) assemblé avec la deuxième plaque (45), l'arbre de broche (39) étant fixé à la paroi de fermeture supérieure (25) du logement (26) de façon à pouvoir tourner au niveau de son extrémité en saillie axiale, mais de façon fixe dans la direction de l'axe de l'arbre de broche (39).
  18. Tête de pliage selon l'une des revendications 1 à 17, caractérisée en ce que le mandrin de pliage (11) est réalisé en tant qu'outil à rayons multiples ou en tant qu'outil à quatre broches.
EP12700601.3A 2011-03-30 2012-01-13 Tête de pliage pour plier des pièces en forme de barre et de tube Not-in-force EP2691195B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011015570.8A DE102011015570B4 (de) 2011-03-30 2011-03-30 Biegekopf zum Biegen stab- und rohrförmiger Werkstücke
PCT/EP2012/000144 WO2012130350A1 (fr) 2011-03-30 2012-01-13 Tête de pliage pour plier des pièces en forme de barre et de tube

Publications (2)

Publication Number Publication Date
EP2691195A1 EP2691195A1 (fr) 2014-02-05
EP2691195B1 true EP2691195B1 (fr) 2016-03-30

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EP12700601.3A Not-in-force EP2691195B1 (fr) 2011-03-30 2012-01-13 Tête de pliage pour plier des pièces en forme de barre et de tube

Country Status (5)

Country Link
US (1) US9468963B2 (fr)
EP (1) EP2691195B1 (fr)
CN (1) CN103429365B (fr)
DE (1) DE102011015570B4 (fr)
WO (1) WO2012130350A1 (fr)

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ITUD20130066A1 (it) * 2013-05-20 2014-11-21 Piegatrici Macch Elettr Macchina per la piegatura di prodotti metallici e relativo procedimento di piegatura.
ITTO20130942A1 (it) * 2013-11-20 2015-05-21 Cte Sistemi Srl Impianto e procedimento per la curvatura e l'avvolgimento di conduttori per la realizzazione di bobine superconduttive
AT514954B1 (de) * 2014-04-09 2015-05-15 Stonawski Rudolf Mag Einrichtung und Verfahren zum Biegen eines Profilelements
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EP2691195A1 (fr) 2014-02-05
DE102011015570A1 (de) 2012-10-04
CN103429365A (zh) 2013-12-04
DE102011015570B4 (de) 2015-01-22
WO2012130350A1 (fr) 2012-10-04
US20140000335A1 (en) 2014-01-02
US9468963B2 (en) 2016-10-18
CN103429365B (zh) 2015-11-25

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