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EP1458505B1 - Tube bending machine and its right and/or left bending device - Google Patents

Tube bending machine and its right and/or left bending device Download PDF

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Publication number
EP1458505B1
EP1458505B1 EP02796898A EP02796898A EP1458505B1 EP 1458505 B1 EP1458505 B1 EP 1458505B1 EP 02796898 A EP02796898 A EP 02796898A EP 02796898 A EP02796898 A EP 02796898A EP 1458505 B1 EP1458505 B1 EP 1458505B1
Authority
EP
European Patent Office
Prior art keywords
bending
tube
jaw
jaws
machine according
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
EP02796898A
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German (de)
French (fr)
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EP1458505A1 (en
Inventor
Serge Cappello
Jean-Paul Chastan
Jean-Paul Bruyas
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.)
SILFAX GROUP
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SILFAX GROUP
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Publication date
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Publication of EP1458505A1 publication Critical patent/EP1458505A1/en
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Anticipated expiration legal-status Critical
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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
    • B21D7/021—Construction of forming members having more than one groove

Definitions

  • the present invention relates to a machine for bending tubes and more particularly to a bending device for bending a tube either to the left in a so-called clockwise direction, or to the right in a counterclockwise direction.
  • European Patent EP 649 687 discloses a tube bending machine having a pivoting bending jig, a bending arm rotatable 180 ° about the axis of the bending jig and a clamping jaw supported by the bending arm.
  • the bending template has two template parts arranged one above the other, one being designed for bending the tube to the right and the other for bending the tube to the left.
  • the clamping jaw is designed for both right bending and left bending.
  • the clamping jaw has respectively a jaw member on each side of a plane transverse to the clamping jaw and containing the axis of the bending jig.
  • the lower jaw member of the clamping jaw acts with the lower jig portion while the upper jaw member acts with the upper jig portion for clamping a portion of the tube.
  • the bending machine tubes according to the present invention is intended to allow either the bending left or bending right of the same tube, by means of a fixed bending roller on the bending arm.
  • the tube bending machine comprises a clamping jaw comprising at least two jaws which are offset laterally with respect to one another.
  • the tube bending machine comprises a clamping jaw comprising at least two jaws located one above the other and which are separated by a housing.
  • the bending machine according to the present invention comprises in the clamping jaw a housing which has a height which is greater than that provided for a jaw.
  • the tube bending machine comprises a clamping jaw comprising three jaws which are offset laterally relative to each other to form a housing between the jaws located one above the other.
  • the tube bending machine comprises a bending arm comprising a bending roller which pivots at the same time as the latter around the vertical axis XX 'of the bending head, when bending to the right or to the left of the tube.
  • the tube bending machine comprises a bending roller comprising at least two jaws which are offset laterally from each other and on either side of the vertical axis XX 'of the bending head.
  • the tube bending machine comprises a first ruler support comprising at least one jaw and at least one housing.
  • the tube bending machine comprises a first ruler support whose number of jaws depends on the number of jaws integral with the clamping jaw and the bending roller for bending left or in a clockwise direction of the tube.
  • the bending machine comprises a second ruler support whose number of jaws depends on the number of jaws integral with the clamping jaw and the bending roller for bending in a counter-clockwise direction of the tube.
  • the tube bending machine comprises a second ruler support, each jaw of which is positioned at the same level as that of the corresponding housing of the clamping jaw.
  • the tube bending machine comprises a second ruler support comprising at least one jaw and at least one housing.
  • the tube bending machine comprises a second ruler support comprising above and below the jaw housing.
  • the tube bending machine comprises means for simultaneously driving and inverted first and second ruler supports in a horizontal translation towards the tube.
  • FIGS. 1 and 2a to 2c show a bending machine 1 whose fixed frame carries at one of its ends a bending head 2 around which one arm pivots.
  • bending 3 for the formation of a tube 4 is in a clockwise direction, or in a counterclockwise direction.
  • the fixed frame comprises, along its longitudinal axis, a guide rail not shown, on which slides a movable carriage 5 which moves towards and away from the bending head 2 by means of a gear motor.
  • the mobile carriage 5 comprises a barrel or a barrel 6, allowing via an internal clamping mandrel, guiding and immobilization in rotation and in translation of the tube 4 to be bent.
  • the bending arm 3 comprises a jaw support 7 which moves horizontally in the direction of the bending head 2.
  • the jaw support 7 is integral with a clamping jaw 8 which has different jaw profiles 9, 10 and 11 and whose number may vary depending on the number of bends to the right and / or left that it is necessary to make on the tube 4.
  • the jaws 9, 10 and 11 are integral with the clamping jaw 8 and fixed relative to each other.
  • the latter are arranged on the clamping jaw 8, so that they are laterally offset relative to each other to form between at least two jaws at least one housing 22.
  • This housing 22 is of a height slightly greater than that provided for a bending jaw.
  • the clamping jaw 8 comprises three jaws 9, 10 and 11 which are offset laterally relative to one another to form between the jaws 9 and 11, which are one above the other, a dwelling 22.
  • the bending arm 3 comprises a bending roller 12 which pivots at the same time as the latter around the vertical axis XX 'of the bending head 2 during bending to the right or to the left of the tube 4.
  • the roller of bending 12 is fixed in rotation relative to the bending arm 3.
  • the bending roller 12 consists of different jaw profiles 13, 14 and 15, the number of which can vary according to the number of bends to the right and / or left that it is necessary to perform on the tube 4. It is found that the number of jaws on the bending roller 12 is equivalent to that provided on the clamping jaw 8.
  • the jaws 13, 14 and 15 are integral with the bending roller 12 and fixed relative to each other.
  • jaws 13, 14 and 15 of the bending roller 12 are offset laterally relative to each other and on either side of the vertical axis XX 'of the bending head 2.
  • the different jaw profiles 13, 14 and 15 of the bending roller 12 are respectively arranged in front of the jaws 9, 10 and 11 of the clamping jaw 8 to perform the bending of the tube 4.
  • the profile of the jaws 9, 11 of the clamping jaw 8 and the profile of the jaws 13, 15 of the bending roller 12 allow bending of the tube 4 in a clockwise direction.
  • the bending machine 1 comprises, at the level of the bending head 2 and on either side of the tube 4 to be bent, a first ruler support 16 and a second ruler support 17 which are arranged opposite one another. the other and which respectively move in a horizontal translation towards the tube 4 and in a horizontal translation towards the bending roller 12.
  • the first strip support 16 moves in a horizontal translation towards the bending head 2, the bending arm 3 carrying the bending roller 12 via a drive device 23, which may be a jack hydraulic or electrical or any other motion transmission system.
  • the second slider support 17 moves in a horizontal translation towards the bending head 2, the bending arm 3 carrying the bending roller 12 via a drive device 24, which may be a jack hydraulic or electrical or any other motion transmission system.
  • the first and second ruler supports 16 and 17 are moved in a horizontal translation towards the tube 4 for its tightening and its immobilization by means of a drive means which is unique to the two ruler supports 16 , 17.
  • the first support strip 16 has two jaws 18, 19 which bear against the tube 4 to accompany and hold said tube 4 during bending in a clockwise direction.
  • the number of jaws provided on the first slide support 16 depends on the number of jaws integral with the clamping jaw 8 and the bending roller 12 for bending in a clockwise direction of the tube 4.
  • the jaws 18 and 19 of the first slide support 16 are separated from one another by a housing 20 whose height d corresponds to a height slightly greater than that of the jaws 10, 14 of the clamping jaw 8 and of the bending roller 12.
  • the housing 20 of the first strip holder 16 is adapted to receive the jaws 10 and 14 of the clamping jaw 8 and the bending roller 12 in order to be able to bend in a clockwise direction of the tube 4.
  • the strip support 16 comprises at least one jaw 18, 19 and at least one housing 20 whose number depends on the number of jaws allowing the bending in a counterclockwise direction of the tube 4.
  • the second support strip 17 has a jaw 21 which abuts against the tube 4 to be able to accompany and maintain said tube 4 during its bending right.
  • the second slide support 17 has a jaw 21, there is provided above and below the latter a housing 25 which is adapted to receive the jaws 9, 11 and 13, 15 of the jaw 8 and the bending roller 12 to be able to make the bends in a counter-clockwise direction of the tube 4.
  • the strip holder 17 comprises at least one jaw 21 and at least one housing 25 whose number depends on the number of jaws allowing bending in a clockwise direction of the tube 4.
  • the number of jaws provided on the second strip support 17 depends on the number of jaws integral with the clamping jaw 8 and the bending roller 12 for bending in a counterclockwise direction of the tube 4.
  • the bending head 2 comprises displacement means to move horizontally and vertically relative to the fixed frame, that is to say in directions lying in planes perpendicular to that containing the longitudinal axis of the machine 1 or the fixed frame, which is generally materialized by the tube 4.
  • FIGS. 3 and 4 show the first bending in a clockwise direction of the tube 4 which is obtained by means of the jaw 11 of the clamping jaw 8, the jaw 15 of the bending roller 12 and the jaw. 19 of the first bracket support 16.
  • the bending in a clockwise direction of the tube 4 is performed when the bending arm 3 and the bending roller 12 pivot around the bending head 2 in a clockwise rotation relative to the vertical axis XX 'of said head.
  • This support tube 4 by the bracket support 16 is obtained through the housing 20 provided between the jaws 18 and 19 which allows to receive the jaw 10 of the bending arm 3 and the jaw 14 of the bending roller 12.
  • the housing 20 of the first support strip 16 allows the release of the jaws 10, 14 for bending in a counterclockwise direction during the rotation in a clockwise direction of the bending arm 3 and the bending roller 12 around the XX 'axis of the bending head 2.
  • FIGS. 5 and 6 show, for example, the second bending in a clockwise direction of the tube 4 which is obtained by means of the jaw 9 of the clamping jaw 8, the jaw 13 of the bending roller 12 and the jaw 18 of the first slide support 16.
  • the second bending in a clockwise direction is achieved after a translation and rotation of the tube 4 about its longitudinal axis to clear the first bending of the bending jaws.
  • the second bending in a clockwise direction of the tube 4 is performed when the bending arm 3 and the bending roller 12 pivot around the bending head 2 in a clockwise rotation relative to the vertical axis XX 'of said head.
  • the jaw 18 of the ruler support 16 is moved in a horizontal translation towards the bending roller 12 to allow a tight support of the tube 4.
  • This support tube 4 by the support strip 16 is obtained through the housing 20 provided between the jaws 18 and 19 which receives the jaw 10 of the bending arm 3 and the jaw 14 of the bending roller 12.
  • the housing 20 of the first support strip 16 allows the clearance of the jaws 10, 14 for bending in a counterclockwise direction during the rotation in the clockwise direction of the bending arm 3 about the axis XX 'of the bending head 2.
  • FIGS. 7 and 8 show a bending in a counter-clockwise direction of the tube 4 which is obtained by means of the jaw 10 of the clamping jaw 8, the jaw 14 of the bending roller 12 and the jaw 21 of the second bracket support 17.
  • the bending in a counterclockwise direction is performed after a translation and a rotation of the tube 4 about its longitudinal axis in order to clear the first two bends in a clockwise direction of the bending jaws.
  • the bending head 2 and the bending arm 3 carrying the bending roller 12 are moved in a vertical direction downwardly relative to the frame of the bending machine 1. This vertical translation allows to disengage the tube 4 of the jaw support 8 and bending roller 12.
  • the bending arm 3 and the bending roller 12 are rotated around the bending head 2 to be positioned to the left of the vertical axis XX '.
  • the bending head 2 and the bending arm 3 are then moved vertically upwards to return to the level of the tube 4 so that the latter is positioned to the left of the axis XX 'of the bending head 2 and between the jaws 10 and 14 of the clamping jaw 8 and the bending roller 12.
  • the bending in a counter-clockwise direction of the tube 4 is performed when the bending arm 3 and the bending roller 12 pivot around the bending head 2 in a rotation from left to right relative to the vertical axis XX ' of said head.
  • This support tube 4 by the support strip 17 is obtained through the housing 22 provided between the jaws 9 and 11 of the clamping jaw 8 which receives the jaw 21 of the support strip 17.
  • This support of the tube 4 by the strip holder 17 is also obtained via the housings 25 provided above and below the jaw 21 in order to respectively receive the jaws 9, 13 and 11, 15 of the clamping jaw 8 and of the bending roller 12.
  • the housing 22 of the clamping jaw 8 and the housings 25 of the strip holder 17 allow the clearance of the jaws 9, 13; 11, 15 and 21 thus allowing bending in a counter-clockwise direction of the tube 4 through the jaws 10 and 14 of the clamping jaw 8 and the bending roller 12 which are driven in a counter-clockwise rotation around of the axis XX 'of the bending head 2.
  • the bending machine 1 can perform other bends in a counterclockwise direction of the tube 4 if the clamping jaw 8 and the bending roller 12 had other jaws for this type of bending.

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

Abstract

The tube bending machine comprises a bending arm (3) provided with a jaw support (7) which moves horizontally towards the bending head (2). The jaw support is integral with a clamping jaw (8) comprising jaws (9,11) for bending the tube (4) in a clockwise direction and a jaw for bending the tube in an anti-clockwise direction. A bending roller (12), stationary on the bending arm, comprises jaws (13,15) for bending the tube in a clockwise direction and a jaw for bending the tube in an anti-clockwise direction. The jaws are laterally offset relative to each other and on either side the bending head vertical axis. A first gib support (16) comprises jaws (18,19) for the clamped accompaniment of the tube when it is being bent in a clockwise direction and a second gib support (17) comprises a jaw (21) for clamped accompaniment of the tube when bending bent in the anti-clockwise direction.

Description

La présente invention est relative à une machine à cintrer les tubes et plus particulièrement à un dispositif de cintrage permettant le cintrage d'un tube soit à gauche selon une direction dite horaire, soit à droite selon une direction anti-horaire.The present invention relates to a machine for bending tubes and more particularly to a bending device for bending a tube either to the left in a so-called clockwise direction, or to the right in a counterclockwise direction.

Lors d'un cintrage suivant une direction horaire, le bras de cintrage se déplace de la droite vers la gauche autour de la tête de cintrage.When bending in a clockwise direction, the bending arm moves from right to left around the bending head.

Lors d'un cintrage suivant une direction anti-horaire, le bras de cintrage se déplace de la gauche vers la droite autour de la tête de cintrage.When bending in a counter-clockwise direction, the bending arm moves from left to right around the bending head.

On connaît d'après le brevet européen EP 649 687 une machine à cintrer les tubes comportant un gabarit de cintrage pivotant, un bras de cintrage pouvant pivoter de 180° degrés autour de l'axe du gabarit de cintrage et une mâchoire de serrage supportée par le bras de cintrage.European Patent EP 649 687 discloses a tube bending machine having a pivoting bending jig, a bending arm rotatable 180 ° about the axis of the bending jig and a clamping jaw supported by the bending arm.

Le gabarit de cintrage présente deux parties de gabarit disposées l'une au-dessus de l'autre, l'une étant conçue pour le cintrage du tube à droite et l'autre pour le cintrage du tube à gauche.The bending template has two template parts arranged one above the other, one being designed for bending the tube to the right and the other for bending the tube to the left.

La mâchoire de serrage est conçue aussi bien pour le cintrage à droite que pour le cintrage à gauche. La mâchoire de serrage présente respectivement un élément de mâchoire de chaque coté d'un plan transversal à la mâchoire de serrage et contenant l'axe du gabarit de cintrage.The clamping jaw is designed for both right bending and left bending. The clamping jaw has respectively a jaw member on each side of a plane transverse to the clamping jaw and containing the axis of the bending jig.

L'élément de mâchoire inférieur de la mâchoire de serrage agit avec la partie de gabarit inférieur tandis que l'élément de mâchoire supérieur agit avec la partie de gabarit supérieur pour le serrage d'une portion de tube.The lower jaw member of the clamping jaw acts with the lower jig portion while the upper jaw member acts with the upper jig portion for clamping a portion of the tube.

La machine à cintrer les tubes suivant la présente invention a pour objet de permettre soit le cintrage à gauche, soit le cintrage à droite d'un même tube, au moyen d'un galet de cintrage fixe sur le bras de cintrage.The bending machine tubes according to the present invention is intended to allow either the bending left or bending right of the same tube, by means of a fixed bending roller on the bending arm.

La machine à cintrer les tubes suivant la présente invention comporte :

  • ❖ un bâti fixe pourvu suivant son axe longitudinal d'un rail de guidage sur lequel coulisse un chariot mobile solidaire d'un canon, permettant par l'intermédiaire d'un mandrin de serrage interne le guidage et l'immobilisation en rotation et en translation d'un tube à cintrer,
  • ❖ à l'une de ses extrémités une tête de cintrage, un galet de cintrage et un bras de cintrage qui pivote autour de l'axe vertical XX' de la tête de cintrage pour la formation du tube,
  • ❖ un bras de cintrage pourvu d'un support de mors qui se déplace horizontalement en direction de la tête de cintrage, ledit support de mors étant solidaire d'un mors de serrage qui comporte au moins une mâchoire pour le cintrage suivant une direction horaire du tube et au moins une mâchoire pour le cintrage suivant une direction anti-horaire du tube, lesdites mâchoires étant fixe entre elles,
  • ❖ un galet de cintrage qui est fixe sur le bras de cintrage et qui comporte au moins une mâchoire pour le cintrage suivant une direction horaire du tube et au moins une mâchoire pour le cintrage suivant une direction anti-horaire du tube, lesdites mâchoires étant décalées latéralement les unes par rapport aux autres et de part et d'autre de l'axe vertical XX' de la tête de cintrage,
  • ❖ un premier support de réglette qui comporte au moins une mâchoire pour l'accompagnement serré du tube lors de son cintrage suivant une direction horaire,
  • ❖ et un second support de réglette qui comporte au moins une mâchoire pour l'accompagnement serré du tube lors de son cintrage suivant une direction anti-horaire.
The tube bending machine according to the present invention comprises:
  • ❖ a fixed frame provided along its longitudinal axis with a guide rail on which slides a movable carriage integral with a barrel, allowing through an internal clamping chuck guiding and immobilization in rotation and in translation a tube to bend,
  • ❖ at one of its ends a bending head, a bending roller and a bending arm which pivots around the vertical axis XX 'of the bending head for forming the tube,
  • ❖ a bending arm provided with a jaw support that moves horizontally towards the bending head, said jaw support being secured to a clamping jaw which has at least one jaw for bending in a clockwise direction of the bending head; tube and at least one jaw for bending in a counter-clockwise direction of the tube, said jaws being fixed to each other,
  • ❖ a bending roller which is fixed on the bending arm and which comprises at least one jaw for bending in a clockwise direction of the tube and at least one jaw for bending in a counterclockwise direction of the tube, said jaws being offset laterally with respect to each other and on either side of the vertical axis XX 'of the bending head,
  • ❖ a first ruler support which comprises at least one jaw for the tight accompaniment of the tube during its bending in a clockwise direction,
  • ❖ and a second ruler support which comprises at least one jaw for the tight accompaniment of the tube during its bending in a counter-clockwise direction.

La machine à cintrer les tubes suivant la présente invention comporte un mors de serrage comprenant au moins deux mâchoires qui sont décalées latéralement les unes par rapport aux autres.The tube bending machine according to the present invention comprises a clamping jaw comprising at least two jaws which are offset laterally with respect to one another.

La machine à cintrer les tubes suivant la présente invention comporte un mors de serrage comprenant au moins deux mâchoires se trouvant l'une au dessus de l'autre et qui sont séparées par un logement.The tube bending machine according to the present invention comprises a clamping jaw comprising at least two jaws located one above the other and which are separated by a housing.

La machine à cintrer les tubes suivant la présente invention comporte dans le mors de serrage un logement qui présente une hauteur qui est supérieure à celle prévue pour une mâchoire.The bending machine according to the present invention comprises in the clamping jaw a housing which has a height which is greater than that provided for a jaw.

La machine à cintrer les tubes suivant la présente invention comporte un mors de serrage comprenant trois mâchoires qui sont décalées latéralement les unes par rapport aux autres pour former, entre les mâchoires se trouvant l'une au dessus de l'autre, un logement.The tube bending machine according to the present invention comprises a clamping jaw comprising three jaws which are offset laterally relative to each other to form a housing between the jaws located one above the other.

La machine à cintrer les tubes suivant la présente invention comporte un bras de cintrage comprenant un galet de cintrage qui pivote en même temps que ce dernier autour de l'axe vertical XX' de la tête de cintrage, lors des cintrages à droite ou à gauche du tube.The tube bending machine according to the present invention comprises a bending arm comprising a bending roller which pivots at the same time as the latter around the vertical axis XX 'of the bending head, when bending to the right or to the left of the tube.

La machine à cintrer les tubes suivant la présente invention comporte un galet de cintrage comprenant au moins deux mâchoires qui sont décalées latéralement les unes des autres et de part et d'autre de l'axe vertical XX' de la tête de cintrage.The tube bending machine according to the present invention comprises a bending roller comprising at least two jaws which are offset laterally from each other and on either side of the vertical axis XX 'of the bending head.

La machine à cintrer les tubes suivant la présente invention comporte un premier support de réglette comprenant au moins une mâchoire et au moins un logement.The tube bending machine according to the present invention comprises a first ruler support comprising at least one jaw and at least one housing.

La machine à cintrer les tubes suivant la présente invention comporte un premier support de réglette dont le nombre de mâchoires dépend du nombre de mâchoires solidaires du mors de serrage et du galet de cintrage permettant le cintrage à gauche ou suivant une direction horaire du tube.The tube bending machine according to the present invention comprises a first ruler support whose number of jaws depends on the number of jaws integral with the clamping jaw and the bending roller for bending left or in a clockwise direction of the tube.

La machine à cintrer les tubes suivant la présente invention comporte un second support de réglette dont le nombre de mâchoires dépend du nombre de mâchoires solidaires du mors de serrage et du galet de cintrage permettant le cintrage suivant une direction anti-horaire du tube.The bending machine according to the present invention comprises a second ruler support whose number of jaws depends on the number of jaws integral with the clamping jaw and the bending roller for bending in a counter-clockwise direction of the tube.

La machine à cintrer les tubes suivant la présente invention comporte un second support de réglette dont chaque mâchoire est positionnée au même niveau que celui du logement correspondant du mors de serrage.The tube bending machine according to the present invention comprises a second ruler support, each jaw of which is positioned at the same level as that of the corresponding housing of the clamping jaw.

La machine à cintrer les tubes suivant la présente invention comporte un second support de réglette comprenant au moins une mâchoire et au moins un logement.The tube bending machine according to the present invention comprises a second ruler support comprising at least one jaw and at least one housing.

La machine à cintrer les tubes suivant la présente invention comporte un second support de réglette comprenant au dessus et en dessous de la mâchoire un logement.The tube bending machine according to the present invention comprises a second ruler support comprising above and below the jaw housing.

La machine à cintrer les tubes suivant la présente invention comporte des moyens d'entraînement simultanés et inversés des premiers et seconds supports de réglette suivant une translation horizontale en direction du tube.The tube bending machine according to the present invention comprises means for simultaneously driving and inverted first and second ruler supports in a horizontal translation towards the tube.

La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :

  • Figure 1 est une vue en perspective illustrant une machine à cintrer les tubes suivant la présente invention.
  • Figures 2a à 2c sont des vues montrant en détail le mors de serrage et le galet de cintrage de la machine à cintrer suivant la présente invention
  • Figures 3 à 6 sont des vues en perspective représentant le dispositif de cintrage suivant une direction horaire d'un tube suivant la présente invention.
  • Figures 7 et 8 sont des vues en perspective représentant le dispositif de cintrage suivant une direction anti-horaire d'un tube suivant la présente invention.
The following description with reference to the accompanying drawings, given by way of non-limiting examples, will provide a better understanding of the invention, the characteristics it has and the advantages that it is likely to provide:
  • Figure 1 is a perspective view illustrating a tube bending machine according to the present invention.
  • Figures 2a to 2c are views showing in detail the clamping jaw and the bending roller of the bending machine according to the present invention.
  • Figures 3 to 6 are perspective views showing the bending device in a clockwise direction of a tube according to the present invention.
  • Figures 7 and 8 are perspective views showing the bending device in a counterclockwise direction of a tube according to the present invention.

On a montré en figures 1 et 2a à 2c une machine à cintrer 1 dont le bâti fixe porte à l'une de ses extrémités une tête de cintrage 2 autour de laquelle pivote un bras de cintrage 3 pour la formation d'un tube 4 soit suivant une direction horaire, soit suivant une direction anti-horaire.FIGS. 1 and 2a to 2c show a bending machine 1 whose fixed frame carries at one of its ends a bending head 2 around which one arm pivots. bending 3 for the formation of a tube 4 is in a clockwise direction, or in a counterclockwise direction.

Lors d'un cintrage suivant une direction horaire, le bras de cintrage 3 se déplace de la droite vers la gauche autour de la tête de cintrage 2.When bending in a clockwise direction, the bending arm 3 moves from right to left around the bending head 2.

Lors d'un cintrage suivant une direction anti-horaire, le bras de cintrage 3 se déplace de la gauche vers la droite autour de la tête de cintrage 2.When bending in a counter-clockwise direction, the bending arm 3 moves from left to right around the bending head 2.

Le bâti fixe comprend, suivant son axe longitudinal, un rail de guidage non représenté, sur lequel coulisse un chariot mobile 5 qui se rapproche et s'éloigne de la tête de cintrage 2 au moyen d'un moto réducteur.The fixed frame comprises, along its longitudinal axis, a guide rail not shown, on which slides a movable carriage 5 which moves towards and away from the bending head 2 by means of a gear motor.

Le chariot mobile 5 comporte un canon ou un fût 6, permettant par l'intermédiaire d'un mandrin de serrage interne, le guidage et l'immobilisation en rotation et en translation du tube 4 à cintrer.The mobile carriage 5 comprises a barrel or a barrel 6, allowing via an internal clamping mandrel, guiding and immobilization in rotation and in translation of the tube 4 to be bent.

Le bras de cintrage 3 comporte un support de mors 7 qui se déplace horizontalement en direction de la tête de cintrage 2.The bending arm 3 comprises a jaw support 7 which moves horizontally in the direction of the bending head 2.

Le support de mors 7 est solidaire d'un mors de serrage 8 qui comporte différents profils de mâchoires 9, 10 et 11 et dont le nombre peut varier en fonction du nombre de cintrage à droite et/ou à gauche qu'il est nécessaire de réaliser sur le tube 4.The jaw support 7 is integral with a clamping jaw 8 which has different jaw profiles 9, 10 and 11 and whose number may vary depending on the number of bends to the right and / or left that it is necessary to make on the tube 4.

Les mâchoires 9, 10 et 11 sont solidaires du mors de serrage 8 et fixes les unes par rapport aux autres.The jaws 9, 10 and 11 are integral with the clamping jaw 8 and fixed relative to each other.

En fonction du nombre de mâchoires, ces dernières sont disposées sur le mors de serrage 8, de manière qu'elles soient décalées latéralement les unes par rapport aux autres pour constituer entre deux mâchoires au moins un logement 22.Depending on the number of jaws, the latter are arranged on the clamping jaw 8, so that they are laterally offset relative to each other to form between at least two jaws at least one housing 22.

Ce logement 22 est d'une hauteur légèrement supérieure à celle prévue pour une mâchoire de cintrage.This housing 22 is of a height slightly greater than that provided for a bending jaw.

On constate, dans l'exemple de réalisation selon la présente invention, que le mors de serrage 8 comporte trois mâchoires 9, 10 et 11 qui sont décalées latéralement les unes par rapport aux autres pour former entre les mâchoires 9 et 11, se trouvant l'une au dessus de l'autre, un logement 22.In the exemplary embodiment according to the present invention, it can be seen that the clamping jaw 8 comprises three jaws 9, 10 and 11 which are offset laterally relative to one another to form between the jaws 9 and 11, which are one above the other, a dwelling 22.

Le bras de cintrage 3 comporte un galet de cintrage 12 qui pivote en même temps que ce dernier autour de l'axe vertical XX' de la tête de cintrage 2 lors des cintrages à droite ou à gauche du tube 4. Ainsi, le galet de cintrage 12 est fixe en rotation par rapport au bras de cintrage 3.The bending arm 3 comprises a bending roller 12 which pivots at the same time as the latter around the vertical axis XX 'of the bending head 2 during bending to the right or to the left of the tube 4. Thus, the roller of bending 12 is fixed in rotation relative to the bending arm 3.

Le galet de cintrage 12 est constitué de différents profils de mâchoires 13, 14 et 15 dont le nombre peut varier en fonction du nombre de cintrage à droite et/ou à gauche qu'il est nécessaire de réaliser sur le tube 4. On constate que le nombre de mâchoires sur le galet de cintrage 12 est équivalent à celui prévu sur le mors de serrage 8.The bending roller 12 consists of different jaw profiles 13, 14 and 15, the number of which can vary according to the number of bends to the right and / or left that it is necessary to perform on the tube 4. It is found that the number of jaws on the bending roller 12 is equivalent to that provided on the clamping jaw 8.

Les mâchoires 13, 14 et 15 sont solidaires du galet de cintrage 12 et fixes les unes par rapport aux autres.The jaws 13, 14 and 15 are integral with the bending roller 12 and fixed relative to each other.

On note que les mâchoires 13, 14 et 15 du galet de cintrage 12 sont décalées latéralement les unes par rapport aux autres et de part et d'autre de l'axe vertical XX' de la tête de cintrage 2.Note that the jaws 13, 14 and 15 of the bending roller 12 are offset laterally relative to each other and on either side of the vertical axis XX 'of the bending head 2.

Les différents profils de mâchoires 13, 14 et 15 du galet de cintrage 12 sont respectivement disposés en face des mâchoires 9, 10 et 11 du mors de serrage 8 pour réaliser les cintrages du tube 4.The different jaw profiles 13, 14 and 15 of the bending roller 12 are respectively arranged in front of the jaws 9, 10 and 11 of the clamping jaw 8 to perform the bending of the tube 4.

On note que le profil des mâchoires 9, 11 du mors de serrage 8 et le profil des mâchoires 13, 15 du galet de cintrage 12 permettent de réaliser des cintrages du tube 4 suivant une direction horaire.Note that the profile of the jaws 9, 11 of the clamping jaw 8 and the profile of the jaws 13, 15 of the bending roller 12 allow bending of the tube 4 in a clockwise direction.

Par contre le profil de la mâchoire 10 du mors de serrage 8 et celui de la mâchoire 14 du galet de cintrage 12 permettent de réaliser des cintrages du tube 4 suivant une direction anti-horaire.By against the profile of the jaw 10 of the clamping jaw 8 and that of the jaw 14 of the bending roller 12 allow bending of the tube 4 in a counterclockwise direction.

La machine à cintrer 1 comporte, au niveau de la tête de cintrage 2 et de part et d'autre du tube 4 à cintrer, un premier support de réglette 16 et un second support de réglette 17 qui sont disposés l'un en face de l'autre et qui se déplacent respectivement suivant une translation horizontale en direction du tube 4 et suivant une translation horizontale en direction du galet de cintrage 12.The bending machine 1 comprises, at the level of the bending head 2 and on either side of the tube 4 to be bent, a first ruler support 16 and a second ruler support 17 which are arranged opposite one another. the other and which respectively move in a horizontal translation towards the tube 4 and in a horizontal translation towards the bending roller 12.

Le premier support de réglette 16 se déplace suivant une translation horizontale en direction de la tête de cintrage 2, du bras de cintrage 3 portant le galet de cintrage 12 par l'intermédiaire d'un dispositif d'entraînement 23, qui peut être un vérin hydraulique ou électrique ou tout autre système de transmission de mouvement.The first strip support 16 moves in a horizontal translation towards the bending head 2, the bending arm 3 carrying the bending roller 12 via a drive device 23, which may be a jack hydraulic or electrical or any other motion transmission system.

Le second support de réglette 17 se déplace suivant une translation horizontale en direction de la tête de cintrage 2, du bras de cintrage 3 portant le galet de cintrage 12 par l'intermédiaire d'un dispositif d'entraînement 24, qui peut être un vérin hydraulique ou électrique ou tout autre système de transmission de mouvement.The second slider support 17 moves in a horizontal translation towards the bending head 2, the bending arm 3 carrying the bending roller 12 via a drive device 24, which may be a jack hydraulic or electrical or any other motion transmission system.

Les premiers et seconds supports de réglette 16 et 17 sont déplacés suivant une translation horizontale en direction du tube 4 en vue de son serrage et son immobilisation par l'intermédiaire d'un moyen d'entraînement qui est unique pour les deux supports de réglette 16, 17.The first and second ruler supports 16 and 17 are moved in a horizontal translation towards the tube 4 for its tightening and its immobilization by means of a drive means which is unique to the two ruler supports 16 , 17.

Ainsi, lorsque le premier support de réglette 16 est déplacé en direction du tube 4 pour son immobilisation, le second support de réglette 17 s'éloigne automatiquement dudit tube. Inversement, lorsque le second support de réglette 17 se rapproche du tube 4, le premier support de réglette 16 s'éloigne de ce dernier.Thus, when the first strip holder 16 is moved towards the tube 4 for its immobilization, the second strip holder 17 moves away automatically from said tube. Conversely, when the second strip holder 17 approaches the tube 4, the first strip holder 16 moves away from the latter.

Le premier support de réglette 16 comporte deux mâchoires 18, 19 qui viennent en appui contre le tube 4 pour pouvoir accompagner et maintenir ledit tube 4 lors des cintrages suivant une direction horaire.The first support strip 16 has two jaws 18, 19 which bear against the tube 4 to accompany and hold said tube 4 during bending in a clockwise direction.

Le nombre de mâchoires prévu sur le premier support de réglette 16 dépend du nombre de mâchoires solidaires du mors de serrage 8 et du galet de cintrage 12 permettant le cintrage suivant une direction horaire du tube 4.The number of jaws provided on the first slide support 16 depends on the number of jaws integral with the clamping jaw 8 and the bending roller 12 for bending in a clockwise direction of the tube 4.

On note que les mâchoires 18 et 19 du premier support de réglette 16 sont séparées l'une de l'autre par un logement 20 dont la hauteur d correspond à une hauteur légèrement supérieure à celle des mâchoires 10, 14 du mors de serrage 8 et du galet de cintrage 12.It will be noted that the jaws 18 and 19 of the first slide support 16 are separated from one another by a housing 20 whose height d corresponds to a height slightly greater than that of the jaws 10, 14 of the clamping jaw 8 and of the bending roller 12.

Le logement 20 du premier support de réglette 16 est propre à recevoir les mâchoires 10 et 14 du mors de serrage 8 et du galet de cintrage 12 pour pouvoir réaliser les cintrages suivant une direction horaire du tube 4.The housing 20 of the first strip holder 16 is adapted to receive the jaws 10 and 14 of the clamping jaw 8 and the bending roller 12 in order to be able to bend in a clockwise direction of the tube 4.

En effet, lors des cintrages suivant une direction horaire du tube 4, le premier support de réglette 16 se déplace en direction du galet de cintrage 12 qui est solidaire à ce niveau de la mâchoire 14.Indeed, during bending in a clockwise direction of the tube 4, the first support strip 16 moves towards the bending roller 12 which is integral at this level of the jaw 14.

Ainsi le support de réglette 16 comporte au moins une mâchoire 18, 19 et au moins un logement 20 dont le nombre dépend du nombre de mâchoires permettant les cintrages suivant une direction anti-horaire du tube 4.Thus the strip support 16 comprises at least one jaw 18, 19 and at least one housing 20 whose number depends on the number of jaws allowing the bending in a counterclockwise direction of the tube 4.

Le second support de réglette 17 comporte une mâchoire 21 qui vient en appui contre le tube 4 pour pouvoir accompagner et maintenir ledit tube 4 lors de son cintrage à droite.The second support strip 17 has a jaw 21 which abuts against the tube 4 to be able to accompany and maintain said tube 4 during its bending right.

Lorsque le second support de réglette 17 comporte une mâchoire 21, il est prévu au dessus et en dessous de cette dernière un logement 25 qui est propre à recevoir les mâchoires 9, 11 et 13, 15 du mors de serrage 8 et du galet de cintrage 12 pour pouvoir réaliser les cintrages suivant une direction anti-horaire du tube 4.When the second slide support 17 has a jaw 21, there is provided above and below the latter a housing 25 which is adapted to receive the jaws 9, 11 and 13, 15 of the jaw 8 and the bending roller 12 to be able to make the bends in a counter-clockwise direction of the tube 4.

Ainsi le support de réglette 17 comporte au moins une mâchoire 21 et au moins un logement 25 dont le nombre dépend du nombre de mâchoires permettant les cintrages suivant une direction horaire du tube 4.Thus the strip holder 17 comprises at least one jaw 21 and at least one housing 25 whose number depends on the number of jaws allowing bending in a clockwise direction of the tube 4.

Egalement le nombre de mâchoires prévu sur le second support de réglette 17 dépend du nombre de mâchoires solidaires du mors de serrage 8 et du galet de cintrage 12 permettant le cintrage suivant une direction anti-horaire du tube 4.Also the number of jaws provided on the second strip support 17 depends on the number of jaws integral with the clamping jaw 8 and the bending roller 12 for bending in a counterclockwise direction of the tube 4.

La tête de cintrage 2 comporte des moyens de déplacement pour pouvoir se déplacer horizontalement et verticalement par rapport au bâti fixe, c'est à dire dans des directions se trouvant dans des plans perpendiculaires à celui contenant l'axe longitudinal de la machine 1 ou du bâti fixe, qui est généralement matérialisé par le tube 4.The bending head 2 comprises displacement means to move horizontally and vertically relative to the fixed frame, that is to say in directions lying in planes perpendicular to that containing the longitudinal axis of the machine 1 or the fixed frame, which is generally materialized by the tube 4.

On a représenté, par exemple, en figures 3 et 4 le premier cintrage suivant une direction horaire du tube 4 qui est obtenu au moyen de la mâchoire 11 du mors de serrage 8, de la mâchoire 15 du galet de cintrage 12 et de la mâchoire 19 du premier support de réglette 16.For example, FIGS. 3 and 4 show the first bending in a clockwise direction of the tube 4 which is obtained by means of the jaw 11 of the clamping jaw 8, the jaw 15 of the bending roller 12 and the jaw. 19 of the first bracket support 16.

On note que pour réaliser un cintrage suivant une direction horaire du tube 4, ce dernier doit se trouver à droite de l'axe vertical XX' de la tête de cintrage 2 selon la représentation de la figure 1.Note that to achieve a bending in a clockwise direction of the tube 4, the latter must be to the right of the vertical axis XX 'of the bending head 2 according to the representation of Figure 1.

Le cintrage suivant une direction horaire du tube 4 est réalisé lorsque le bras de cintrage 3 et le galet de cintrage 12 pivotent autour de la tête de cintrage 2 selon une rotation horaire par rapport à l'axe vertical XX' de ladite tête.The bending in a clockwise direction of the tube 4 is performed when the bending arm 3 and the bending roller 12 pivot around the bending head 2 in a clockwise rotation relative to the vertical axis XX 'of said head.

Lors de la rotation du bras de cintrage 3 et du galet de cintrage 12 autour de la tête de cintrage 2, la mâchoire 19 du support de réglette 16 est déplacée suivant une translation horizontale en direction du galet de cintrage 12 pour permettre un accompagnement serré du tube 4.During the rotation of the bending arm 3 and the bending roller 12 around the bending head 2, the jaw 19 of the ruler support 16 is moved in a horizontal translation in the direction of the bending roller 12 to allow a tight support of the bending wheel 2. tube 4.

Cet accompagnement du tube 4 par le support de réglette 16 est obtenu par l'intermédiaire du logement 20 prévu entre les mâchoires 18 et 19 qui permet de recevoir la mâchoire 10 du bras de cintrage 3 et la mâchoire 14 du galet de cintrage 12.This support tube 4 by the bracket support 16 is obtained through the housing 20 provided between the jaws 18 and 19 which allows to receive the jaw 10 of the bending arm 3 and the jaw 14 of the bending roller 12.

En effet, le logement 20 du premier support de réglette 16 permet le dégagement des mâchoires 10, 14 permettant le cintrage suivant une direction anti-horaire lors de la rotation en sens horaire du bras de cintrage 3 et du galet de cintrage 12 autour de l'axe XX' de la tête de cintrage 2.Indeed, the housing 20 of the first support strip 16 allows the release of the jaws 10, 14 for bending in a counterclockwise direction during the rotation in a clockwise direction of the bending arm 3 and the bending roller 12 around the XX 'axis of the bending head 2.

On a montré, par exemple, en figures 5 et 6 le second cintrage suivant une direction horaire du tube 4 qui est obtenu au moyen de la mâchoire 9 du mors de serrage 8, de la mâchoire 13 du galet de cintrage 12 et de la mâchoire 18 du premier support de réglette 16.FIGS. 5 and 6 show, for example, the second bending in a clockwise direction of the tube 4 which is obtained by means of the jaw 9 of the clamping jaw 8, the jaw 13 of the bending roller 12 and the jaw 18 of the first slide support 16.

Le second cintrage suivant une direction horaire est réalisé après une translation et une rotation du tube 4 autour de son axe longitudinal afin de dégager le premier cintrage des mâchoires de cintrage.The second bending in a clockwise direction is achieved after a translation and rotation of the tube 4 about its longitudinal axis to clear the first bending of the bending jaws.

Le second cintrage suivant une direction horaire du tube 4 est réalisé lorsque le bras de cintrage 3 et le galet de cintrage 12 pivotent autour de la tête de cintrage 2 selon une rotation horaire par rapport à l'axe vertical XX' de ladite tête.The second bending in a clockwise direction of the tube 4 is performed when the bending arm 3 and the bending roller 12 pivot around the bending head 2 in a clockwise rotation relative to the vertical axis XX 'of said head.

Lors de la rotation du bras de cintrage 3 et du galet de cintrage 12 autour de la tête de cintrage 2, la mâchoire 18 du support de réglette 16 est déplacée suivant une translation horizontale en direction du galet cintrage 12 pour permettre un accompagnement serré du tube 4.During the rotation of the bending arm 3 and the bending roller 12 around the bending head 2, the jaw 18 of the ruler support 16 is moved in a horizontal translation towards the bending roller 12 to allow a tight support of the tube 4.

Cet accompagnement du tube 4 par le support de réglette 16 est obtenu par l'intermédiaire du logement 20 prévu entre les mâchoires 18 et 19 qui reçoit la mâchoire 10 du bras de cintrage 3 et la mâchoire 14 du galet de cintrage 12.This support tube 4 by the support strip 16 is obtained through the housing 20 provided between the jaws 18 and 19 which receives the jaw 10 of the bending arm 3 and the jaw 14 of the bending roller 12.

En effet, le logement 20 du premier support de réglette 16 permet le dégagement des mâchoires 10, 14 permettant le cintrage suivant une direction anti-horaire lors de la rotation en sens horaire du bras de cintrage 3 autour de l'axe XX' de la tête de cintrage 2.Indeed, the housing 20 of the first support strip 16 allows the clearance of the jaws 10, 14 for bending in a counterclockwise direction during the rotation in the clockwise direction of the bending arm 3 about the axis XX 'of the bending head 2.

On a illustré en figures 7 et 8 un cintrage suivant une direction anti-horaire du tube 4 qui est obtenu au moyen de la mâchoire 10 du mors de serrage 8, de la mâchoire 14 du galet de cintrage 12 et de la mâchoire 21 du second support de réglette 17.FIGS. 7 and 8 show a bending in a counter-clockwise direction of the tube 4 which is obtained by means of the jaw 10 of the clamping jaw 8, the jaw 14 of the bending roller 12 and the jaw 21 of the second bracket support 17.

Le cintrage suivant une direction anti-horaire est réalisé après une translation et une rotation du tube 4 autour de son axe longitudinal afin de dégager les deux premiers cintrages suivant une direction horaire des mâchoires de cintrage.The bending in a counterclockwise direction is performed after a translation and a rotation of the tube 4 about its longitudinal axis in order to clear the first two bends in a clockwise direction of the bending jaws.

On note que pour réaliser un cintrage suivant une direction anti-horaire du tube 4 ce dernier doit se trouver à gauche de l'axe vertical XX' de la tête de cintrage 2.Note that to achieve a bend in a counterclockwise direction of the tube 4 it should be left of the vertical axis XX 'of the bending head 2.

Pour cela, la tête de cintrage 2 et le bras de cintrage 3 portant le galet de cintrage 12 sont déplacés suivant une direction verticale vers le bas par rapport au bâti de la machine à cintrer 1. Cette translation verticale permet de dégager le tube 4 du support de mors 8 et du galet de cintrage 12.For this, the bending head 2 and the bending arm 3 carrying the bending roller 12 are moved in a vertical direction downwardly relative to the frame of the bending machine 1. This vertical translation allows to disengage the tube 4 of the jaw support 8 and bending roller 12.

Le bras de cintrage 3 et le galet de cintrage 12 sont entraînés en rotation autour de la tête de cintrage 2 pour venir se positionner à gauche de l'axe vertical XX'.The bending arm 3 and the bending roller 12 are rotated around the bending head 2 to be positioned to the left of the vertical axis XX '.

La tête de cintrage 2 et le bras de cintrage 3 sont ensuite déplacés verticalement vers le haut pour revenir au niveau du tube 4 pour que ce dernier soit positionné à gauche de l'axe XX' de la tête de cintrage 2 et entre les mâchoires 10 et 14 du mors de serrage 8 et du galet de cintrage 12.The bending head 2 and the bending arm 3 are then moved vertically upwards to return to the level of the tube 4 so that the latter is positioned to the left of the axis XX 'of the bending head 2 and between the jaws 10 and 14 of the clamping jaw 8 and the bending roller 12.

Le cintrage suivant une direction anti-horaire du tube 4 est réalisé lorsque le bras de cintrage 3 et le galet de cintrage 12 pivotent autour de la tête de cintrage 2 selon une rotation de gauche vers la droite par rapport à l'axe vertical XX' de ladite tête.The bending in a counter-clockwise direction of the tube 4 is performed when the bending arm 3 and the bending roller 12 pivot around the bending head 2 in a rotation from left to right relative to the vertical axis XX ' of said head.

Lors de la rotation du bras de cintrage 3 et du galet de cintrage 12 autour de la tête de cintrage 2, la mâchoire 21 du support de réglette 17 est déplacée suivant une translation horizontale en direction du galet de cintrage 12 pour permettre un accompagnement serré du tube 4.During the rotation of the bending arm 3 and the bending roller 12 around the bending head 2, the jaw 21 of the ruler support 17 is moved in a horizontal translation towards the bending roller 12 to allow a tight support of the bending wheel 2. tube 4.

Cet accompagnement du tube 4 par le support de réglette 17 est obtenu par l'intermédiaire du logement 22 prévu entre les mâchoires 9 et 11 du mors de serrage 8 qui reçoit la mâchoire 21 du support de réglette 17.This support tube 4 by the support strip 17 is obtained through the housing 22 provided between the jaws 9 and 11 of the clamping jaw 8 which receives the jaw 21 of the support strip 17.

Cet accompagnement du tube 4 par le support de réglette 17 est également obtenu par l'intermédiaire des logements 25 prévus au dessus et au dessous de la mâchoire 21 afin de recevoir respectivement les mâchoires 9, 13 et 11, 15 du mors de serrage 8 et du galet de cintrage 12.This support of the tube 4 by the strip holder 17 is also obtained via the housings 25 provided above and below the jaw 21 in order to respectively receive the jaws 9, 13 and 11, 15 of the clamping jaw 8 and of the bending roller 12.

Ainsi, le logement 22 du mors de serrage 8 et les logements 25 du support de réglette 17 permettent le dégagement des mâchoires 9, 13; 11, 15 et 21 permettant ainsi le cintrage suivant une direction anti-horaire du tube 4 par l'intermédiaire des mâchoires 10 et 14 du mors de serrage 8 et du galet de cintrage 12 qui sont entraînés dans une rotation en sens anti-horaire autour de l'axe XX' de la tête de cintrage 2.Thus, the housing 22 of the clamping jaw 8 and the housings 25 of the strip holder 17 allow the clearance of the jaws 9, 13; 11, 15 and 21 thus allowing bending in a counter-clockwise direction of the tube 4 through the jaws 10 and 14 of the clamping jaw 8 and the bending roller 12 which are driven in a counter-clockwise rotation around of the axis XX 'of the bending head 2.

La machine à cintrer 1 peut effectuer d'autres cintrages suivant une direction anti-horaire du tube 4 si le mors de serrage 8 et le galet de cintrage 12 comportaient d'autres mâchoires permettant ce type de cintrage.The bending machine 1 can perform other bends in a counterclockwise direction of the tube 4 if the clamping jaw 8 and the bending roller 12 had other jaws for this type of bending.

Claims (14)

  1. Tube-bending machine that comprises a fixed frame that has, along its longitudinal axis, a guide rail on which slides a movable carriage (5) that is integral with a rod (6) that makes it possible, by means of a clamping mandrel, to guide a tube (4) to be bent and to immobilize said tube in rotation and translation, at one of its ends a bending head (2), a bending roller (12) and a bending arm (3) that pivots around the vertical axis XX' of the bending head (2) for the formation of the tube (4), characterized in that it comprises:
    ◆ a bending arm (3) that is provided with a jaw support (7) that moves horizontally in the direction of the bending head (2), said jaw support (7) being integral with a clamping jaw (8) that comprises at least one jaw (9, 11) for bending the tube (4) clockwise and at least one jaw (10) for bending the tube (4) counterclockwise, said jaws being fixed to one another,
    ◆ a bending roller (12) that is fixed to the bending arm (3) and that comprises at least one jaw (13, 15) for bending the tube (4) clockwise and at least one jaw (14) for bending the tube (4) counterclockwise, said jaws (13, 14 and 15) being laterally offset relative to one another and on both sides of the vertical axis XX' of the bending head (2),
    ◆ a first strip support (16) that comprises at least one jaw (18, 19) to clamp the tube (4) as it is being bent clockwise,
    ◆ and a second strip support (17) that comprises at least one jaw (21) to clamp the tube (4) as it is being bent counterclockwise.
  2. Tube-bending machine according to Claim 1, characterized in that the clamping jaw (8) comprises at least two jaws (9, 10, 11) that are laterally offset relative to one another.
  3. Tube-bending machine according to Claim 1, characterized in that the clamping jaw (8) comprises at least two jaws (9, 11) that are located one above the other and that are separated by a housing (22).
  4. Tube-bending machine according to Claim 3, characterized in that the housing (22) has a height that is greater than the one provided for a jaw (9, 10, 11).
  5. Tube-bending machine according to Claim 1, characterized in that the clamping jaw (8) comprises three jaws (9, 10 and 11) that are laterally offset relative to one another to form, between the jaws (9, 11) that are located one above the other, a housing (22).
  6. Tube-bending machine according to Claim 1, characterized in that the bending arm (3) comprises a bending roller (12) that pivots at the same time as the latter around the vertical axis XX' of the bending head (2) as the tube (4) is being bent to the right or left.
  7. Tube-bending machine according to Claim 1, characterized in that the bending roller (12) comprises at least two jaws (13, 14 and 15) that are laterally offset relative to one another and on either side of the vertical axis XX' of the bending head (2).
  8. Tube-bending machine according to Claim 1, characterized in that the first strip support (16) comprises at least one jaw (18, 19) and at least one housing (20).
  9. Tube-bending machine according to Claim 8, characterized in that the number of jaws (18, 19) provided on the first strip support (16) depends on the number of jaws that are integral with the clamping jaw (8) and the bending roller (12) making it possible to bend the tube (4) clockwise.
  10. Tube-bending machine according to Claim 1, characterized in that the number of jaws (21) provided on the second strip support (17) depends on the number of jaws that are integral with the clamping jaw (8) and the bending roller (12) making it possible to bend the tube (4) counterclockwise.
  11. Tube-bending machine according to Claim 1, characterized in that each jaw (21) of the second strip support (17) is positioned on the same level as that of the housing (22) corresponding to the clamping jaw (8).
  12. Tube-bending machine according to Claim 1, characterized in that the strip support (17) comprises at least one jaw (21) and at least one housing (25).
  13. Tube-bending machine according to Claim 12, characterized in that the strip support (17) comprises a housing (25) above and below the jaw (21) .
  14. Tube-bending machine according to Claim 1, characterized in that it comprises simultaneous and inverted driving means of the first and second strip supports (16, 17) in terms of a horizontal translatory motion in the direction of the tube (4).
EP02796898A 2001-12-20 2002-12-05 Tube bending machine and its right and/or left bending device Expired - Lifetime EP1458505B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0116593 2001-12-20
FR0116593A FR2833868B1 (en) 2001-12-20 2001-12-20 TUBE BENDING MACHINE AND ITS BENDING DEVICE ON THE LEFT AND / OR RIGHT
PCT/FR2002/004193 WO2003053606A1 (en) 2001-12-20 2002-12-05 Tube bending machine and its right and/or left bending device

Publications (2)

Publication Number Publication Date
EP1458505A1 EP1458505A1 (en) 2004-09-22
EP1458505B1 true EP1458505B1 (en) 2007-02-21

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EP02796898A Expired - Lifetime EP1458505B1 (en) 2001-12-20 2002-12-05 Tube bending machine and its right and/or left bending device

Country Status (7)

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US (1) US7213430B2 (en)
EP (1) EP1458505B1 (en)
AT (1) ATE354446T1 (en)
CA (1) CA2467366C (en)
DE (1) DE60218339T2 (en)
FR (1) FR2833868B1 (en)
WO (1) WO2003053606A1 (en)

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WO2019029893A1 (en) 2017-08-08 2019-02-14 Wafios Aktiengesellschaft BENDING MACHINE FOR BENDING ROD OR TUBE WORKPIECES

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FR2900077B1 (en) * 2006-04-21 2008-12-26 Numalliance Soc Par Actions Si DEVICE FOR BENDING TUBES OR PROFILES WITH A SYMMETRIC STRUCTURE FOR TWO BENDING SENSES AND MACHINE EQUIPPED WITH THE DEVICE
FR2915410B1 (en) * 2007-04-24 2009-06-12 Jaubjaub Consulting Sarl MACHINE FOR BENDING A PROFILE ACCORDING TO TWO SENSES OF BENDING.
ITRM20070483A1 (en) * 2007-09-17 2009-03-18 Cml Int Spa CURVATURI MACHINE WITH ANIMA HAVING A CARRYING STRUCTURE PARTICULARLY RESISTANT TO LOAVORATION STRESSES
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CN102049439B (en) * 2010-09-30 2012-08-29 黄伟明 Pipe bending machine integrating straightening, cutting and three-dimensional numerical control pipe bending functions
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WO2019029893A1 (en) 2017-08-08 2019-02-14 Wafios Aktiengesellschaft BENDING MACHINE FOR BENDING ROD OR TUBE WORKPIECES
DE102017117979A1 (en) 2017-08-08 2019-02-14 Wafios Aktiengesellschaft Bending machine for bending rod-shaped or tubular workpieces
US11484928B2 (en) 2017-08-08 2022-11-01 Wafios Aktiengesellschaft Bending machine for bending rod-shaped or tubular workpieces

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ATE354446T1 (en) 2007-03-15
US7213430B2 (en) 2007-05-08
FR2833868B1 (en) 2004-03-05
DE60218339T2 (en) 2007-11-15
US20050172690A1 (en) 2005-08-11
CA2467366A1 (en) 2003-07-03
EP1458505A1 (en) 2004-09-22
CA2467366C (en) 2009-09-08
WO2003053606A1 (en) 2003-07-03
FR2833868A1 (en) 2003-06-27
DE60218339D1 (en) 2007-04-05

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