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EP1979111B1 - Orientation device for a bending machine - Google Patents

Orientation device for a bending machine Download PDF

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Publication number
EP1979111B1
EP1979111B1 EP06709091A EP06709091A EP1979111B1 EP 1979111 B1 EP1979111 B1 EP 1979111B1 EP 06709091 A EP06709091 A EP 06709091A EP 06709091 A EP06709091 A EP 06709091A EP 1979111 B1 EP1979111 B1 EP 1979111B1
Authority
EP
European Patent Office
Prior art keywords
tubes
bars
connecting rods
orientation device
gripping
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.)
Expired - Lifetime
Application number
EP06709091A
Other languages
German (de)
French (fr)
Other versions
EP1979111A1 (en
Inventor
Joël ETIENNE
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.)
Numalliance SAS
Original Assignee
Numalliance SAS
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Filing date
Publication date
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Publication of EP1979111A1 publication Critical patent/EP1979111A1/en
Application granted granted Critical
Publication of EP1979111B1 publication Critical patent/EP1979111B1/en
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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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • 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
    • B21D7/12—Bending rods, profiles, or tubes with programme control
    • 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
    • B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends

Definitions

  • the invention relates to an orientation device for bars, tubes or profiles used in bending machines and in any process requiring the orientation of a bar about its axis (see for example FR-A-2,739,801 ).
  • a slot allows the introduction of the element to be deformed in the orientation head, said slot must be of sufficient depth to position the center of the bar in the center of the orientation head, which imposes a position of loading and unloading and a trajectory of the element extremely precise.
  • Such an orientation head requires a clamping device in the center of the head.
  • orientation heads does not allow loading and unloading of the element to be oriented in all positions, which generates complex and bulky devices for handling the elements to be deformed, as it does not require manual repositioning operations.
  • the current configuration of the orientation heads also does not allow a total freedom of rotation for the element to be oriented, angular constraints do not generally allow a complete rotation of the element before another operation, limiting accordingly the possibilities of the machine and the realizable objects.
  • the device according to the invention therefore aims to solve these main difficulties to meet the need for complete freedom from the positions of loading and unloading of the orientation head, precise trajectory and 360 ° rotation of the element to be oriented inside the bending machine.
  • the invention is a significant improvement of the existing devices which has the advantage of the ease of loading and unloading of the elements to be oriented, in particular because of its design and the gripping system.
  • the small size of the gripping device makes it possible to orient the elements as close as possible to the bending tools and to locate said device without difficulty in the machines.
  • a decisive advantage of the device according to the invention comes from the possibility of rotation and orientation between 0 and 360 ° of the tubes, bars or profiles, as well as the orientation of U-shaped tubes.
  • FIGS. Figures 1a, 2a and 3a represent opposite positions, after rotation between 120 ° and 150 ° of the rods 10 and 11 and the element to be orientated 2, with respect to the positions illustrated in FIGS. Figures 1a, 2a and 3a .
  • Figures 1a, 2a and 3a show the gripper 1 attached to the end of the support arm 3 by means of a pin 5 free rotation.
  • Said clamp comprises retractable jaws 6 for grasping and holding the element to be oriented 2.
  • the collet with retractable jaws 6 is equipped with a linear movement for gripping and releasing the element to be oriented 2. Closing and clamping of the jaws being performed at the end of the output stroke.
  • the support arm 3 ensures the transmission of the movement from the rotation generator assembly 4 towards the gripper 1.
  • the support arm comprises, in addition to the crankpin 5 which carries the gripping head 1, two crank pins 7 and 8 attached to the ends of two connecting rods. These crank pins are rotatably mounted in the support arm 3 to ensure the transmission of movement between the rotation generator assembly and the gripper.
  • crank pins 5 and 7 It is further arranged on the crank pins 5 and 7, a device for transmitting and synchronizing the rotation of the gripping head 1.
  • This transmission and synchronization device during the movement of the rods 10 and 11 may be constituted as illustrated in the figures by a set of pulleys carried by the crank pins 5 and 7 and a belt 9 or by any other known system.
  • the rotation generator assembly comprises a set of two rods 10 and 11 mounted integral on a drive 12 and connected at their ends to the crank pins 7 and 8.
  • the drive 12 is placed on a gear motor, for example, so as to generate a rotation as accurate and continuous as possible.
  • the axes 13, 14, 15, 16, of the two connecting rods 10 and 11 form a parallelogram, one of the long sides of which is a part of the support arm 3.
  • the distance d between the axes 13 and 16 being strictly equal to the distance between the axes 14 and 15.
  • the main gears of the two connecting rods 10 and 11 engage a synchronized rotation having the effect of moving the support arm 3 parallel to itself in a global rotational movement .
  • the axis 17 of the element to be oriented is parallel to the axes 13 and 14 and included in the plane formed by these two axes 13,14.
  • the axes 15, 16 and 18 of the three pins 7, 8 and 5 are included in the same plane. During the movement, the plane formed by these three axes 15, 16 and 18 moves parallel to the fixed plane formed by the three axes 13, 14 and 17.
  • the distance d between the axes 13, 16 or 14, 15 of the two connecting rods 10 and 11 is strictly identical to the distance between the axis 18 of the crankpin 5 of the gripper 1 and the axis 17 of the element to guide 2.
  • the device according to the invention allows precise control of the rotation of the element to be oriented around the axis 17 passing through the center of the jaws 6. This rotation is possible between 0 and 360 ° so as to allow, in one or several subsequent steps, all possible bending configurations.
  • the rotations of the rods 10 and 11 are carried out in one direction or the other so as to allow all the angular positions of the element to be oriented 2 around its axis 17.
  • the device according to the invention is preferably used for gripping by the middle of the element to be oriented, it is however conceivable to position the orientation device for a different grip, as required.
  • FIGS. 3a and 3b illustrate the change of orientation of a U-tube with invariance of the position of the axis 17 of the tube.
  • the clamping force of the jaws and the various components of the orientation head are chosen according to the characteristics of the element to be oriented, in particular its weight and its dimensions.
  • orientation device without departing from the scope of the invention, it may in particular be envisaged a different system for the opening mechanism, closing, tightening, loosening of the bar, and a different mode of synchronization of said mechanism according to the position in the rotation of the rods and the element to be oriented.
  • the device is preferably designed for the orientation of bars, tubes or profiles in bending macnines however it could be envisaged to use the tool for other elements having sufficient rigidity and to be reoriented around an axis of rotation for multiple transformations, such as wires, cables or various objects.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Manipulator (AREA)

Abstract

The present invention relates to an orientation device for bars, tubes or profiles, which device can be used in bending machines, comprising an arm (3) supporting a gripping system (1) provided with a gripper (6) and placed on a crank pin (5), characterized by the presence of two connecting rods (10, 11) and in that: the two connecting rods (10, 11) are connected to said arm (3) on two crank pins (7, 8) which are mounted freely in rotation with respect to the arm (3), said two connecting rods (10, 11) being able to be actuated simultaneously, and at least one connecting rod (10) or (11) is coupled via a crank pin (7) or (8) to the crank pin (5) in such a way as to automatically bring about a synchronized rotation of said gripping device (1) during the movement of the connecting rods (10, 11).

Description

L'invention concerne un dispositif d'orientation pour barres, tubes ou profilés utilisable dans des machines de cintrage et dans tout procédé nécessitant l'orientation d'une barre autour de son axe (voir par exemple FR-A-2 739 801 ).The invention relates to an orientation device for bars, tubes or profiles used in bending machines and in any process requiring the orientation of a bar about its axis (see for example FR-A-2,739,801 ).

Des chaises, des séchoirs, des lustres, des présentoirs et de nombreux objets sont réalisés avec des barres, des tubes ou des profilés coudés, pliés parfois dans les trois dimensions en des formes complexes. Ces formes sont réalisées au moyen de machines de cintrage qui déforment les éléments sans les briser et avec un écrasement minimal.Chairs, dryers, chandeliers, displays and many objects are made with bars, tubes or angled profiles, sometimes bent in three dimensions into complex shapes. These shapes are made by means of bending machines that deform the elements without breaking them and with minimal crushing.

Ces machines de cintrage sont de plus en plus sophistiquées pour réaliser des pièces toujours plus compliquées, de manière reproductible, automatisée, et à des cadences de production élevées.These bending machines are increasingly sophisticated to produce increasingly complicated parts, in a reproducible, automated way, and at high production rates.

Il est souvent nécessaire de réaliser sur un tube, une barre ou un profilé deux cintrages, voire plus, dans des plans différents, ce qui est obtenu par le désengagement du tube après chaque étape puis un repositionnement après un pivotement axial. Ce pivotement étant généralement réalisé par une saisie en bout des éléments à déformer lorsque ces éléments sont des barres coupés. Une grande précision de repositionnement est nécessaire pour une fabrication rigoureusement conforme à ce qui est souhaité en final. Un faible écart de positionnement se traduisant par un écart très amplifié après cintrage.It is often necessary to perform on a tube, a bar or a profile two or more bends in different planes, which is obtained by the disengagement of the tube after each step and a repositioning after axial pivoting. This pivoting being generally performed by an end capture of the elements to be deformed when these elements are cut bars. High repositioning accuracy is required for rigorously conforming to what is desired in the end. A small difference in positioning resulting in a very amplified difference after bending.

Traditionnellement les machines à cintrer disposent de différentes têtes de cintrage permettant de réaliser des déformations des éléments dans les trois dimensions en deux ou plusieurs étapes selon les nécessités. Dans le but d'automatisation complète de ces machines il est indispensable de repositionner l'élément à déformer dans la machine après chaque cintrage, cette opération est effectuée par des têtes d'orientation placées entre les éléments de cintrage.Traditionally bending machines have different bending heads to achieve deformations of the elements in three dimensions in two or more steps as required. For the purpose of complete automation of these machines it is essential to reposition the element to deform in the machine after each bending, this operation is performed by orientation heads placed between the bending elements.

De nombreuses machines de cintrage ont été décrites dans l'art antérieur, notamment dans les documents WO 0170425 et WO 0174512 de la demanderesse.Many bending machines have been described in the prior art, in particular in the documents WO 0170425 and WO 0174512 of the plaintiff.

En ce qui concerne les dispositifs de transfert entre les étapes de cintrage, lesquels sont appelés dans la suite de ce document dispositifs d'orientation, il est classiquement utilisé des mécanismes à introduction radiale, disposant d'un guidage par palier et d'un entraînement circulaire concentrique à l'élément tubulaire à déformer.With regard to the transfer devices between the bending steps, which are referred to in the rest of this document as orientation devices, it is conventionally used mechanisms with radial insertion, having a step guide and a drive concentric circular to the tubular element to deform.

Dans la technique connue une fente permet l'introduction de l'élément à déformer dans la tête d'orientation, ladite fente doit être d'une profondeur suffisante pour positionner le centre de la barre au centre de la tête d'orientation, ce qui impose une position de chargement et de déchargement ainsi qu'une trajectoire de l'élément extrêmement précise. Une telle tête d'orientation nécessite un dispositif de serrage au centre de la tête.In the known art a slot allows the introduction of the element to be deformed in the orientation head, said slot must be of sufficient depth to position the center of the bar in the center of the orientation head, which imposes a position of loading and unloading and a trajectory of the element extremely precise. Such an orientation head requires a clamping device in the center of the head.

La configuration actuelle des têtes d'orientation connues ne permet pas un chargement et un déchargement de l'élément à orienter dans toutes les positions, ce qui génère des dispositifs complexes et volumineux pour la manipulation des éléments à déformer, quant cela n'oblige pas des opérations manuelles de repositionnement.The current configuration of known orientation heads does not allow loading and unloading of the element to be oriented in all positions, which generates complex and bulky devices for handling the elements to be deformed, as it does not require manual repositioning operations.

La configuration actuelle des têtes d'orientation ne permet pas non plus une totale liberté de rotation pour l'élément à orienter, des contraintes angulaires n'autorisent généralement pas une rotation complète de l'élément avant une autre opération, limitant en conséquence les possibilités de la machine et les objets réalisables.The current configuration of the orientation heads also does not allow a total freedom of rotation for the element to be oriented, angular constraints do not generally allow a complete rotation of the element before another operation, limiting accordingly the possibilities of the machine and the realizable objects.

Par le fait même de leur conception les dispositifs d'orientation connus sont volumineux et les machines les incluant peu compactes.By the very fact of their design the known orientation devices are bulky and machines including them little compact.

Le dispositif selon l'invention a donc pour objectif de résoudre ces principales difficultés pour répondre à la nécessité de liberté complète par rapport aux positions de chargement et de déchargement de la tête d'orientation, de trajectoire précise et de rotation à 360° de l'élément à orienter à l'intérieur de la machine de cintrage.The device according to the invention therefore aims to solve these main difficulties to meet the need for complete freedom from the positions of loading and unloading of the orientation head, precise trajectory and 360 ° rotation of the element to be oriented inside the bending machine.

La présente invention concerne un dispositif d'orientation pour barres, tubes ou profilés, utilisable dans des machines de cintrage, comprenant un bras supportant un système de préhension muni d'une pince et placé sur un maneton. Le dispositif d'orientation est caractérisé par la présence de deux bielles et en ce que :

  • les deux bielles sont reliées audit bras sur deux autres manetons montés libres en rotation par rapport au bras,
  • lesdites deux bielles étant actionnables simultanément, et étant disposées de sorte que des axes des deux bielles forment un parallélogramme dont des grands côtés est une partie du bras support,
  • au moins une bielle est accouplée par l'intermédiaire d'un des deux autres manetons au maneton supportant le système de préhension, de manière à entraîner ledit dispositif de préhension automatiquement au cours du mouvement des bielles en une rotation synchronisée.
The present invention relates to an orientation device for bars, tubes or profiles, usable in bending machines, comprising an arm supporting a gripping system provided with a clamp and placed on a crank pin. The orientation device is characterized by the presence of two connecting rods and in that:
  • the two rods are connected to said arm on two other pins mounted free to rotate relative to the arm,
  • said two rods being simultaneously operable, and being arranged so that axes of the two rods form a parallelogram whose long sides is a part of the support arm,
  • at least one connecting rod is coupled via one of the other two crank pins supporting the gripping system, so as to drive said gripping device automatically during the movement of the rods in a synchronized rotation.

L'invention est une amélioration significative des dispositifs existants qui présente l'avantage de la facilité de chargement et de déchargement des éléments à orienter, notamment en raison de sa conception et du système de préhension. Le faible encombrement du dispositif de préhension permet de réaliser l'orientation des éléments au plus près des outils de cintrage et de localiser ledit dispositif sans difficulté dans les machines. Un avantage déterminant du dispositif selon l'invention provient de la possibilité de rotation et d'orientation entre 0 et 360° des tubes, barres ou profilés, ainsi que de l'orientation de tubes en U.The invention is a significant improvement of the existing devices which has the advantage of the ease of loading and unloading of the elements to be oriented, in particular because of its design and the gripping system. The small size of the gripping device makes it possible to orient the elements as close as possible to the bending tools and to locate said device without difficulty in the machines. A decisive advantage of the device according to the invention comes from the possibility of rotation and orientation between 0 and 360 ° of the tubes, bars or profiles, as well as the orientation of U-shaped tubes.

Cette orientation des tubes en U, sans qu'une reprise soit nécessaire, peut être effectuée pour la plupart des pièces à réaliser, ce qui permet une automatisation de la fabrication de nombreux objets de ce type avec un gain de productivité conséquent.This orientation of U-tubes, without a recovery is necessary, can be performed for most of the parts to be made, which allows automation of the manufacture of many objects of this type with a consequent productivity gain.

D'autres caractéristiques et avantages de l'invention se dégageront de la description qui va suivre en regard des dessins annexés qui ne sont donnés qu'à titre d'exemples non limitatifs.

  • Les figures 1a et 1b représentent, en perspective, deux positions opposées de l'élément à orienter et la configuration de la tête d'orientation dans ces deux situations.
  • Les figures 2a et 2b représentent en vue de côté et en coupe les deux positions opposées de l'élément à orienter et les composantes de la tête d'orientation dans ces configurations.
  • Les figures 3a et 3b montrent deux voues en perspective de la tête d'orientation dans deux positions différentes et le changement d'orientation d'un tube conformé en U.
Other features and advantages of the invention will become apparent from the description which follows with reference to the accompanying drawings which are given by way of non-limiting examples.
  • The Figures 1a and 1b represent, in perspective, two opposite positions of the element to be oriented and the configuration of the orientation head in these two situations.
  • The Figures 2a and 2b represent in side view and in section the two opposite positions of the element to be oriented and the components of the orientation head in these configurations.
  • The Figures 3a and 3b show two eyes in perspective of the orientation head in two different positions and the change of orientation of a U-shaped tube.

Comme le montre les figures 1a et 2a, la tête d'orientation selon l'invention est constituée des éléments essentiels suivants :

  • Une pince de préhension 1 permettant la saisie de l'élément à orienter 2.
  • Un bras support 3.
  • Un ensemble générateur de rotation comprenant différents organes de transmission et actionnant la tête d'orientation. Ledit ensemble étant composé de deux bielles 10 et 11 et d'un entraînement 12.
As shown by Figures 1a and 2a , the orientation head according to the invention consists of the following essential elements:
  • A gripper 1 for grasping the element to be oriented 2.
  • A support arm 3.
  • A rotation generator assembly comprising different transmission members and actuating the orientation head. Said assembly being composed of two connecting rods 10 and 11 and a drive 12.

Les figures 1b, 2b, 3b, représentent des positions opposées, après rotation entre 120° et 150° des bielles 10 et 11 et de l'élément à orienter 2, par rapport aux positions illustrées dans les figures 1a, 2a et 3a.The Figures 1b, 2b , 3b , represent opposite positions, after rotation between 120 ° and 150 ° of the rods 10 and 11 and the element to be orientated 2, with respect to the positions illustrated in FIGS. Figures 1a, 2a and 3a .

Plus précisément les figures 1a, 2a et 3a montrent la pince de préhension 1 fixée à l'extrémité du bras support 3 au moyen d'un maneton 5 libre en rotation. Ladite pince comporte des mors escamotables 6 permettant la saisie et le maintien de l'élément à orienter 2.More specifically, Figures 1a, 2a and 3a show the gripper 1 attached to the end of the support arm 3 by means of a pin 5 free rotation. Said clamp comprises retractable jaws 6 for grasping and holding the element to be oriented 2.

La pince à mors escamotables 6 est équipée d'un mouvement linéaire pour la préhension et le relâchement de l'élément à orienter 2. La fermeture et le serrage des mors étant réalisé en fin de course de sortie.The collet with retractable jaws 6 is equipped with a linear movement for gripping and releasing the element to be oriented 2. Closing and clamping of the jaws being performed at the end of the output stroke.

Le bras support 3 assure la transmission du mouvement depuis l'ensemble générateur de rotation 4 vers la pince de préhension 1.The support arm 3 ensures the transmission of the movement from the rotation generator assembly 4 towards the gripper 1.

Le bras support comporte, outre le maneton 5 qui porte la tête de préhension 1, deux manetons 7 et 8 fixés aux extrémités de deux bielles. Ces manetons sont montés libres en rotation dans le bras support 3 pour assurer la transmission du mouvement entre l'ensemble générateur de rotation et la pince de préhension.The support arm comprises, in addition to the crankpin 5 which carries the gripping head 1, two crank pins 7 and 8 attached to the ends of two connecting rods. These crank pins are rotatably mounted in the support arm 3 to ensure the transmission of movement between the rotation generator assembly and the gripper.

Il est disposé, en outre, sur les manetons 5 et 7, un dispositif de transmission et de synchronisation de la rotation de la tête de préhension 1.It is further arranged on the crank pins 5 and 7, a device for transmitting and synchronizing the rotation of the gripping head 1.

Ce dispositif de transmission et de synchronisation au cours du mouvement des bielles 10 et 11 peut être constitué comme cela est illustré sur les figures par un ensemble de poulies portées par les manetons 5 et 7 et une courroie 9 ou par tout autre système connu. L'ensemble générateur de rotation comporte un ensemble de deux bielles 10 et 11 montées solidaires sur un entraînement 12 et reliées par leurs extrémités aux manetons 7 et 8. Lequel entraînement 12 est placé sur un moto réducteur, par exemple, de manière à engendrer une rotation aussi précise et continue que possible.This transmission and synchronization device during the movement of the rods 10 and 11 may be constituted as illustrated in the figures by a set of pulleys carried by the crank pins 5 and 7 and a belt 9 or by any other known system. The rotation generator assembly comprises a set of two rods 10 and 11 mounted integral on a drive 12 and connected at their ends to the crank pins 7 and 8. The drive 12 is placed on a gear motor, for example, so as to generate a rotation as accurate and continuous as possible.

Il est prévu que ledit entraînement 12 puisse tourner dans les deux sens possibles.It is expected that said drive 12 can rotate in both directions.

Comme cela est plus particulièrement visible sur les figures 2a et 2b les axes 13, 14, 15, 16, des deux bielles 10 et 11, forment un parallélogramme dont un des grands côtés est une partie du bras support 3. La distance d entre les axes 13 et 16 étant rigoureusement égale à la distance entre les axes 14 et 15.As this is particularly visible on Figures 2a and 2b the axes 13, 14, 15, 16, of the two connecting rods 10 and 11, form a parallelogram, one of the long sides of which is a part of the support arm 3. The distance d between the axes 13 and 16 being strictly equal to the distance between the axes 14 and 15.

Lorsque l'entraînement 12 est actionné dans un sens ou dans l'autre, les roues dentées principales des deux bielles 10 et 11 engagent une rotation synchronisée ayant pour effet de déplacer le bras support 3 parallèlement à lui-même dans un mouvement global de rotation. Le dispositif de préhension 1, accouplé avec la bielle 11 par l'intermédiaire de la courroie 9, engage un mouvement simultané qui se traduit par une rotation synchronisée de l'élément à orienter autour de son axe 17.When the drive 12 is actuated in one direction or the other, the main gears of the two connecting rods 10 and 11 engage a synchronized rotation having the effect of moving the support arm 3 parallel to itself in a global rotational movement . The gripping device 1, coupled with the connecting rod 11 via the belt 9, engages a simultaneous movement which results in a synchronized rotation of the element to be oriented about its axis 17.

Selon l'invention et tel que cela est visible sur les figures 2a et 2b, l'axe 17 de l'élément à orienter est parallèle aux axes 13 et 14 et inclus dans le plan formé par ces deux axes 13,14.According to the invention and as it is visible on Figures 2a and 2b the axis 17 of the element to be oriented is parallel to the axes 13 and 14 and included in the plane formed by these two axes 13,14.

De même les axes 15, 16 et 18 des trois manetons 7, 8 et 5 sont inclus dans un même plan. Au cours du mouvement le plan formé par ces trois axes 15, 16 et 18 se déplace parallèlement au plan fixe formé par les trois axes 13, 14 et 17.Similarly, the axes 15, 16 and 18 of the three pins 7, 8 and 5 are included in the same plane. During the movement, the plane formed by these three axes 15, 16 and 18 moves parallel to the fixed plane formed by the three axes 13, 14 and 17.

Par ailleurs la distance d entre les axes 13, 16 ou 14, 15 des deux bielles 10 et 11, est rigoureusement identique à la distance entre l'axe 18 du maneton 5 de la pince de préhension 1 et l'axe 17 de l'élément à orienter 2.Furthermore, the distance d between the axes 13, 16 or 14, 15 of the two connecting rods 10 and 11 is strictly identical to the distance between the axis 18 of the crankpin 5 of the gripper 1 and the axis 17 of the element to guide 2.

Le dispositif selon l'invention permet un contrôle précis de la rotation de l'élément à orienter autour de l'axe 17 passant par le centre des mors 6. Cette rotation est possible entre 0 et 360° de manière à autoriser, dans une ou plusieurs étapes ultérieures, toutes les configurations de cintrage envisageables.The device according to the invention allows precise control of the rotation of the element to be oriented around the axis 17 passing through the center of the jaws 6. This rotation is possible between 0 and 360 ° so as to allow, in one or several subsequent steps, all possible bending configurations.

Selon l'invention, en fonction du sens de l'entraînement 12, les rotations des bielles 10 et 11 sont effectuées dans un sens ou dans l'autre de manière à permettre toutes les positions angulaires de l'élément à orienter 2 autour de son axe 17.According to the invention, depending on the direction of the drive 12, the rotations of the rods 10 and 11 are carried out in one direction or the other so as to allow all the angular positions of the element to be oriented 2 around its axis 17.

Le dispositif selon l'invention est utilisé de préférence pour une préhension par le milieu de l'élément à orienter, il est toutefois concevable de positionner le dispositif d'orientation pour une préhension différente, selon les nécessités.The device according to the invention is preferably used for gripping by the middle of the element to be oriented, it is however conceivable to position the orientation device for a different grip, as required.

Les figures 3a et 3b illustrent le changement d'orientation d'un tube en U avec invariance de la position de l'axe 17 du tube.The Figures 3a and 3b illustrate the change of orientation of a U-tube with invariance of the position of the axis 17 of the tube.

La force de serrage des mors et les différents composants de la tête d'orientation sont choisis en fonction des caractéristiques de l'élément à orienter, notamment son poids et ses dimensions.The clamping force of the jaws and the various components of the orientation head are chosen according to the characteristics of the element to be oriented, in particular its weight and its dimensions.

Plusieurs variantes sont possibles pour le dispositif d'orientation sans sortir du cadre de l'invention, il peut notamment être envisagé un système différent pour le mécanisme d'ouverture, fermeture, serrage, desserrage de la barré, ainsi qu'un mode différent de synchronisation dudit mécanisme en fonction de la position dans la rotation des bielles et de l'élément à orienter.Several variants are possible for the orientation device without departing from the scope of the invention, it may in particular be envisaged a different system for the opening mechanism, closing, tightening, loosening of the bar, and a different mode of synchronization of said mechanism according to the position in the rotation of the rods and the element to be oriented.

Il peut aussi être envisagé plusieurs tailles de bras support, des dimensions variables et différents moyens pour l'entraînement des bielles sans sortir du cadre de l'invention.It can also be envisaged several sizes of support arm, variable dimensions and different means for driving rods without departing from the scope of the invention.

Il est envisageable de modifier la distance d entre les axes 13 et 16, 14 et 15, de manière à adapter le dispositif d'orientation pour la manipulation de pièces plus volumineuses ou plus petites, si la distance entre l'axe du maneton 5 et l'axe 17 de l'élément à orienter est ajustée en conséquence, c'est à dire à l'identique. Cette homothétie des distances est nécessaire afin que la rotation de l'élément à orienter s'effectue toujours autour de l'axe 17, tel que cela est représenté sur les figures.It is conceivable to modify the distance d between the axes 13 and 16, 14 and 15, so as to adapt the orientation device for handling larger or smaller parts, if the distance between the axis of the crankpin 5 and the axis 17 of the element to be oriented is adjusted accordingly, that is to say the identical. This homothety of the distances is necessary so that the rotation of the element to be orientated is always performed around the axis 17, as shown in the figures.

Le dispositif est conçu de préférence pour l'orientation de barres, tubes ou profilés dans des macnines de cintrage toutefois il pourrait être envisagé d'employer l'outil pour d'autres éléments disposant d'une rigidité suffisante et devant être réorientés autour d'un axe de rotation pour des transformations multiples, tels que des fils métalliques, des câbles ou des objets variés.The device is preferably designed for the orientation of bars, tubes or profiles in bending macnines however it could be envisaged to use the tool for other elements having sufficient rigidity and to be reoriented around an axis of rotation for multiple transformations, such as wires, cables or various objects.

Claims (10)

  1. Orientation device for bars, tubes or profiles which can be used in bending machines, comprising an arm (3) which supports a gripping system (1) provided with a clamp (6) and placed on a crank pin (5), characterised by the presence of two connecting rods (10, 11) and in that:
    • the two connecting rods (10, 11) are connected to said arm (3) on two other crank pins (7, 8) which are mounted to rotate freely with respect to the arm (3),
    • the said two connecting rods (10, 11) are able to be actuated simultaneously, and are arranged such that the axes 13, 14, 15, 16 of the two connecting rods form a parallelogram, one of the long sides of which is part of the support arm (3),
    • at least one connecting rod (10, 11) is coupled by means of one of the two other crank pins (7, 8) to the crank pin (5) supporting the gripping system in such a way as to automatically bring about a synchronised rotation of said gripping device (1) during the movement of the connecting rods (10, 11).
  2. Orientation device for bars, tubes or profiles according to claim 1 in which the rotation of the element (2) to be orientated can be controlled between 0 and 360° around the axis (17) passing through the centre of the jaws (6).
  3. Orientation device for bars, tubes or profiles according to claim 1 in which the axes (13, 14) of the two main cogged wheels of the connecting rods (10. 11) and the axis (17) of the element (2) to be orientated are situated in the same plane.
  4. Orientation device for bars, tubes or profiles according to claim 3 in which the distance (d) of the centre-to-centre of each connecting rod (10, 11) is rigorously identical to the distance between the axis (18) of the crank pin (5) of the gripping clamp (1) and the axis (17) of the element (2) to be orientated.
  5. Orientation device for bars, tubes or profiles according to claim 4 in which the distance (d) can be adjusted as a function of the space occupied by the element to be orientated (2).
  6. Orientation device for bars, tubes or profiles according to claim 1 in which the two connecting rods (10, 11) are actuated by a single drive (12) and a geared motor device, for example.
  7. Orientation device for bars, tubes or profiles according to claim 6 in which the two connecting rods (10, 11) actuated simultaneously can turn in two opposite directions, according to the direction of rotation of the drive (12).
  8. Orientation device for bars, tubes or profiles according any one of the preceding claims in which the gripping device (1) is a clamp with retractable jaws (6) having a linear movement for gripping the element to be orientated (2), closing and tightening the jaws (6).
  9. Orientation device for bars, tubes or profiles according to any one of the preceding claims in which the coupling device between at least one of the two other crank pins (7, 8) and the crank pin (5) supporting the gripping system is a system of band pulleys (9).
  10. Orientation device for bars, tubes or profiles according to any one of the preceding claims in which the element (2) to be orientated is a U-shaped part.
EP06709091A 2006-01-16 2006-01-16 Orientation device for a bending machine Expired - Lifetime EP1979111B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2006/000084 WO2007080236A1 (en) 2006-01-16 2006-01-16 Orientation device for a bending machine

Publications (2)

Publication Number Publication Date
EP1979111A1 EP1979111A1 (en) 2008-10-15
EP1979111B1 true EP1979111B1 (en) 2009-12-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06709091A Expired - Lifetime EP1979111B1 (en) 2006-01-16 2006-01-16 Orientation device for a bending machine

Country Status (6)

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EP (1) EP1979111B1 (en)
AT (1) ATE450329T1 (en)
BR (1) BRPI0621002A2 (en)
CA (1) CA2631846A1 (en)
DE (1) DE602006010909D1 (en)
WO (1) WO2007080236A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109570295A (en) * 2018-12-29 2019-04-05 张家港市剑泉工具制造有限公司 A kind of quick apparatus for bending of pliers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211688C2 (en) * 1982-03-30 1986-10-09 Binder, Karl-Franz, 8077 Reichertshofen Industrial robots for manufacturing and / or assembly purposes
FR2622129B1 (en) * 1987-10-26 1990-03-02 Delaite Jean Francois MACHINE FOR CONFORMING A SECTION OF A WIRE OR TUBE BY SUCCESSIVE BENDING
FR2739801B1 (en) * 1995-10-13 1998-01-02 Leseure Michel IMPROVEMENTS ON PLANE MANIPULATORS WITH FROZEN OR PROGRAMMABLE TRAVEL AT VERY HIGH RATES

Also Published As

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WO2007080236A1 (en) 2007-07-19
ATE450329T1 (en) 2009-12-15
DE602006010909D1 (en) 2010-01-14
CA2631846A1 (en) 2007-07-19
EP1979111A1 (en) 2008-10-15
BRPI0621002A2 (en) 2011-11-29

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