EP0258109A1 - Method and apparatus for bending metallic wires - Google Patents

Method and apparatus for bending metallic wires Download PDF

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Publication number
EP0258109A1
EP0258109A1 EP87401792A EP87401792A EP0258109A1 EP 0258109 A1 EP0258109 A1 EP 0258109A1 EP 87401792 A EP87401792 A EP 87401792A EP 87401792 A EP87401792 A EP 87401792A EP 0258109 A1 EP0258109 A1 EP 0258109A1
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EP
European Patent Office
Prior art keywords
wire
machine according
bending
axis
dressing
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.)
Withdrawn
Application number
EP87401792A
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German (de)
French (fr)
Inventor
Yves Latour
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Latour and Fils SA
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Latour and Fils SA
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Publication date
Application filed by Latour and Fils SA filed Critical Latour and Fils SA
Publication of EP0258109A1 publication Critical patent/EP0258109A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/008—Bending wire other than coiling; Straightening wire in 3D with means to rotate the wire about its axis
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
    • 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
    • B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire

Definitions

  • the present invention relates to a method and a machine for bending metal wires in three dimensions.
  • roller feed which pulls the wires, coming from a boot or a reel, through a straightener.
  • wires before introducing them, step by step, into a rotary head which performs, at each step, the folds in different planes.
  • the roller feeding device has the disadvantage of not respecting the angular position of the folds in the different planes because, during the advance, the wire can turn on itself. Also, to do this, we tried to replace the roller feed by a clip feed, so as not to let go of the wire during the advance.
  • EP-A-0 108 695 discloses an automatic bending machine with a distributor member in the axis of which the element to be bent is moved step by step using a fixed feed comprising a fixed clamp, ensuring the straightening of the wire step by step, and a folding member carried by a frame rotating around the distributor member so as to be able to arch the wire in different planes during the stepwise advance of the wire, which is held stationary in rotation.
  • Patent EP-A-0 121 826 relates to a fixed bending head, equipped with various tools arranged radially, into which the wire is introduced laterally.
  • This invention solves the problem of defining a method and creating a bending machine, with a bending head and with fixed bending tools, allowing the bending of wires in three dimensions, wire straightening without having to push it through the straightening rollers, and process management by a programmable controller.
  • the method of bending metal wires in three dimensions consists in keeping the bending head fixed and in rotating and moving the feeding devices and wire straightener around the axis of the wire, keeping the latter integral with the straightener -wire of so as to orient the wire, with a view to folding, in different planes, and to advance this step by step, towards the folding head, with a view to the formation of folds.
  • This method also consists in retaining the wire by its end during the retraction of the feeding devices and wire straightener, while the wire, has been previously detached from the feeding system, in order to obtain the straightening of the wire during during the return, towards the rear, of the feeding device.
  • the machine operating according to this process essentially consists of a fixed folding head, equipped with a tool magazine or several fixed heads and a retaining clamp, and a feeding and dressing assembly, mobile in rotation and translation.
  • the set of feeding and dressing consists of the combination of a wire straightener and a slide equipped with a feeding clamp.
  • the feed and dressing assembly moves on a guide rail by means of two slides of a screw arranged parallel to the guide rail, driven in rotation by a gear motor, and of a nut integral with one of the slides.
  • the feed and dressing assembly is rotated relative to the sliders by means of a transmission and a motor fixed to one of the two sliders.
  • Folding is carried out using one or more reciprocating or rotating tools, on shaped mandrels, mounted in a folding magazine with rotary or reciprocating movement.
  • This machine is controlled by means of a programmable automaton or any other means of this type.
  • FIG. 1 we can see a machine for bending metal wires essentially consisting of a wire straightener 1 , combined with a feed slide 2 equipped with a feed clip 3 , a guide rail 4 , a feed motor 5 , a rotation motor 6 , a screw 7 for moving the feed, a non-return clamp 8 , a tool magazine 9 , d a bending tool 10 , a transmission 11 , a folding head 12 , slides 13 and and 14 and a nut 15 for driving the wire feed 16 .
  • the wire 16 enters the folding head 12 , after having passed through the wire straightener 1 , the feed slide 2 , equipped with its feed clamp 3 and by the anti-gripper back 8 .
  • step by step, of the wire 16 and its orientation as a function of folding in different planes it suffices therefore to temporarily secure the wire 16 in the feed slide 2 , by action on the feed clamp 3 , then to put the feed motor 5 and the rotation motor 6 into operation according to predetermined sequences, controlled by the programmable controller, in order to obtain the desired folding.
  • the movement of the feed is ensured by means of the screw 7 , driven in rotation by the gear motor 5 , and by the nut 15 secured to the slide 14 which, with the slide 13 , ensures the movement of the dressing and feeding assembly with respect to the guide rail 4 , while the orientation in the chosen planes, as a function of the unfolding of the folding sequences, is obtained by means of the motor 6 and the transmission 11 .
  • a folding is carried out by a tool 10 , alternating or rotary on shaped mandrels, mounted in a tool magazine 9 , with rotary or alternating movement.
  • wire straightener 1 is integral with the feed slide 2 makes it possible to roll back the wire 16 , without constraint on the latter, in order to carry out certain types of bending or particular cuts: cutting within the radius of the bending , for example.
  • FIG. 2 a variant of the folding head is shown.
  • the wire is always referenced 16 and the non-return clamp 8 is maintained.
  • the tool magazine 9 and the bending tool 10 are eliminated in favor of the head 20 .
  • This comprises a movable structure 21 relative to the frame 22 in the vertical direction as indicated by the double arrow 23 .
  • the movement can be obtained by a motor 24 secured to the frame 22 driving a ball screw 25 but could be by any equivalent means such as a hydraulic cylinder or a stepping motor for example.
  • the mobile structure 21 comprises two displacement means 40 and 50 respectively in translation and in rotation.
  • the first displacement means has the purpose of displacing rollers 26, 27 placed on a roller bearing head 28 .
  • the latter comprises a tenon 31 , one of the lateral faces of which is machined with notches 29 in the manner of a rack 30 .
  • the post can slide into a groove 32 of a head support 33 , a groove in which the teeth of a pinion 36 can be seen extending at the end of the shaft 34 of a motor 35 .
  • the second means 50 consists of a motor 51 driving a shaft 52 itself driving through a belt 53 a hollow shaft 54 coaxial with the shaft 34 and integral with the head support 33 .
  • this folding head is as follows:
  • the wire 16 being brought in and correctly oriented by the machine, has its axis 160 situated between the rollers 26 and 27 .
  • the displacement means 40 By actuating the displacement means 40 by the shaft 34 , the pinion 36 and the rack 30 , the head 28 is brought therefore the working roller so that its axis coincides with that of the motor 35 therefore with that of the hollow shaft 54 .
  • the third means constituted by the motor 24 makes it possible to adjust the axis 160 of the wire so that it is tangent to the surface of the working roller.
  • the folding is then carried out by actuation of the shaft 52 thanks to the motor 51 , the hollow shaft rotates by a corresponding angle, driving the support 33 which by the slide 32 simultaneously drives the roller carrier head and therefore the rollers.
  • the shaft 52 thanks to the motor 51
  • the hollow shaft rotates by a corresponding angle, driving the support 33 which by the slide 32 simultaneously drives the roller carrier head and therefore the rollers.
  • the radii of curvature of the rollers can be different, which multiplies all the more possibilities by making folds of different radii.

Abstract

The invention relates to a method and an apparatus for bending wires in three dimensions. The apparatus essentially consists of a fixed bending head (12) equipped with a magazine for tools (9) and a feed and straightening assembly (1, 2, 3) which is rotationally and translationally movable. Application: automatic bending of wires. <IMAGE>

Description

La présente invention concerne un procédé et une machine à plier les fils métalliques dans les trois dimensions.The present invention relates to a method and a machine for bending metal wires in three dimensions.

Il existe déjà des machines permettant le pliage de fils métalliques dans les trois dimensions, celles-­ci comportent, pour la plupart, un amenage à galets qui tire les fils, provenant d'une botte ou d'une bobine, à travers un dresse-fils, avant de les introduire, pas par pas, dans une tête rotative qui réalise, à chaque pas, les plis dans différents plans. Cependant, le dispositif d'amenage à galets a pour inconvénient de ne pas respecter la position angulaire des pliages dans les différents plans car, lors de l'avance, le fil peut tourner sur lui-même. Aussi, pour ce faire, a-t'on cherché à remplacer l'amenage à galets par un amenage à pince, de faon à ne pas lâcher le fil lors de l'avance. Toutefois, certaines de ces machines ne comportent qu'une seule tête de pliage et ne peuvent, de ce fait accepter que des pièces dont les rayons de cambrage sont constants; car il est en effet difficile, sur cette sorte de machine, de changer les outils de pliage à partir d'un magasin en rotation autour de l'axe du fil, comme c'est déjà le cas sur certaines machines outils. Mais, sur ces dernières machines, le temps de changement d'outil est presque négligeable par rapport au temps d'usinage.There already exist machines allowing the bending of metallic wires in three dimensions, these comprise, for the most part, a roller feed which pulls the wires, coming from a boot or a reel, through a straightener. wires, before introducing them, step by step, into a rotary head which performs, at each step, the folds in different planes. However, the roller feeding device has the disadvantage of not respecting the angular position of the folds in the different planes because, during the advance, the wire can turn on itself. Also, to do this, we tried to replace the roller feed by a clip feed, so as not to let go of the wire during the advance. However, some of these machines have only one folding head and can therefore only accept parts with constant bending radii; because it is indeed difficult, on this kind of machine, to change the folding tools from a magazine rotating around the axis of the wire, as is already the case on certain machine tools. But, on these latter machines, the tool change time is almost negligible compared to the machining time.

Par contre, dans le domaine du pliage de fil, les temps opératoires sont de l'ordre de 1/10 de seconde, et les temps de déplacement influent considérablement sur la production.On the other hand, in the field of wire bending, the operating times are of the order of 1/10 of a second, and the travel times have a considerable influence. on production.

On connaît par le brevet EP-A- 0 108 695 une machine automatique à cambrer avec un organe distributeur dans l'axe duquel l'élément à cambrer est déplacé pas par pas à l'aide d'un amenage fixe comportant une pince fixe, assurant le dressage du fil pas par pas, et un organe de pliage porté par un bâti tournant autour de l'organe distributeur de façon à pouvoir cambrer le fil dans différents plans lors de l'avance pas à pas du fil, qui est maintenu immobile en rotation. EP-A-0 108 695 discloses an automatic bending machine with a distributor member in the axis of which the element to be bent is moved step by step using a fixed feed comprising a fixed clamp, ensuring the straightening of the wire step by step, and a folding member carried by a frame rotating around the distributor member so as to be able to arch the wire in different planes during the stepwise advance of the wire, which is held stationary in rotation.

Le brevet EP-A- 0 121 826 concerne une tête de cambrage fixe, équipée de divers outils disposés radialement, dans laquelle le fil est introduit latéralement.Patent EP-A-0 121 826 relates to a fixed bending head, equipped with various tools arranged radially, into which the wire is introduced laterally.

Le procédé et la machine à plier les fils métalliques dans les trois dimensions, selon l'invention, visent à remédier à ces inconvénients.The method and the machine for bending metal wires in three dimensions, according to the invention, aim to remedy these drawbacks.

Cette invention, telle qu'elle est caractérisée dans les revendications, résout le probleme consistant à définir un procédé et à créer une machine à plier, à tête de pliage et à outils de cambrage fixes, permettant le pliage de fils dans les trois dimensions, le dressage du fil sans être obligé de le pousser à travers les galets de dressage, et la gestion du procédé par un automate programmable.This invention, as characterized in the claims, solves the problem of defining a method and creating a bending machine, with a bending head and with fixed bending tools, allowing the bending of wires in three dimensions, wire straightening without having to push it through the straightening rollers, and process management by a programmable controller.

Le procédé de pliage de fils métalliques dans les trois dimensions consiste à maintenir la tête de pliage fixe et à faire tourner et déplacer les dispositifs d'amenage et dresse-fils autour de l'axe du fil, en maintenant celui-ci solidaire du dresse-fil, de façon à orienter le fil, en vue du pliage, dans des plans différents, et à faire avancer celuici pas par pas, vers la tête de pliage, en vue de la formation des plis. Ce procédé consiste, aussi, à retenir le fil par son extrémité pendant le recul des dispositifs d'amenage et dresse-fil, alors que le fil, a été préalablement désolidarisé du systeme d'amenage, afin d'obtenir le dressage du fil pendant pendant le retour, vers l'arrière, du dispositif d'amenage.The method of bending metal wires in three dimensions consists in keeping the bending head fixed and in rotating and moving the feeding devices and wire straightener around the axis of the wire, keeping the latter integral with the straightener -wire of so as to orient the wire, with a view to folding, in different planes, and to advance this step by step, towards the folding head, with a view to the formation of folds. This method also consists in retaining the wire by its end during the retraction of the feeding devices and wire straightener, while the wire, has been previously detached from the feeding system, in order to obtain the straightening of the wire during during the return, towards the rear, of the feeding device.

La machine fonctionnant selon ce procédé est constituée essentiellement d'une tête de pliage fixe, équipée d'un magasin d'outils ou de plusieurs têtes fixes et d'une pince de retenue, et d'un ensemble d'amenage et de dressage, mobile en rotation et en translation.The machine operating according to this process essentially consists of a fixed folding head, equipped with a tool magazine or several fixed heads and a retaining clamp, and a feeding and dressing assembly, mobile in rotation and translation.

L'ensemble d'amenage et de dressage est constitué de la combinaison d'un dresse-fil et d'un coulisseau équipé d'une pince d'amenage.The set of feeding and dressing consists of the combination of a wire straightener and a slide equipped with a feeding clamp.

L'ensemble d'amenage et de dressage se déplace sur un rail de guidage par l'intermédiaire de deux coulisseaux d'une vis disposée parallelement au rail de guidage, entraînée en rotation par un moto-réducteur, et d'un écrou solidaire de l'un des coulisseaux.The feed and dressing assembly moves on a guide rail by means of two slides of a screw arranged parallel to the guide rail, driven in rotation by a gear motor, and of a nut integral with one of the slides.

L'ensemble d'amenage et de dressage est entraîné en rotation, par rapport aux coulisseaux, par l'intermédiaire d'une transmission et d'un moteur fixé à l'un des deux coulisseaux.The feed and dressing assembly is rotated relative to the sliders by means of a transmission and a motor fixed to one of the two sliders.

Le pliage s'effectue par l'intermédiaire d'un ou plusieurs outils alternatifs ou rotatifs, sur des mandrins de forme, montés dans un magasin de pliage à déplacement rotatif ou alternatif.Folding is carried out using one or more reciprocating or rotating tools, on shaped mandrels, mounted in a folding magazine with rotary or reciprocating movement.

Cette machine est commandée par l'intermédiaire d'un automate programmable ou de tout autre moyen du genre.This machine is controlled by means of a programmable automaton or any other means of this type.

Les avantages obtenus grâce à cette invention consistent essentiellement en ceci que l'ensemble des outillages est simplifié du fait du maintien de ceux-ci dans un plan fixe et de rotation du fil par rapport à ceux-ci.The advantages obtained thanks to this invention consist essentially in that all the tools are simplified due to the fact that they are kept in a fixed plane and the wire rotates relative to them.

D'autres caractéristiques et avantages apparaîtront dans la description qui va suivre d'une machine réalisée selon l'invention et fonctionnant selon le procédé décrit dans celle-ci, donnée à titre d'exemple non limitatif au regard des dessins annexés, qui représentent :

  • - figure1 : machine en coupe transversale selon l'invention,
  • - figure2 : tête de pliage vue en perspective adaptable à la machine.
Other characteristics and advantages will appear in the following description of a machine produced according to the invention and operating according to the method described therein, given by way of nonlimiting example with regard to the appended drawings, which represent:
  • FIG. 1 : machine in cross section according to the invention,
  • - Figure 2 : folding head perspective view adaptable to the machine.

Sur la figure 1, on voit une machine à plier les fils métalliques constituée essentiellement d'un dresse-fil 1, combiné à un coulisseau d'amenage 2 équipé d'une pince d'amenage 3, d'un rail de guidage 4, d'un moto-réducteur d'avance 5, d'un moteur de rotation 6, d'une vis 7 de déplacement de l'amenage, d'une pince anti-retour 8, d'un magasin d'outils 9, d'un outil de cambrage 10, d'une transmission 11, d'une tête de pliage 12, de coulisseaux 13 et et 14 et d'un écrou 15 d'entraînement de l'amenage du fil 16.In FIG. 1 , we can see a machine for bending metal wires essentially consisting of a wire straightener 1 , combined with a feed slide 2 equipped with a feed clip 3 , a guide rail 4 , a feed motor 5 , a rotation motor 6 , a screw 7 for moving the feed, a non-return clamp 8 , a tool magazine 9 , d a bending tool 10 , a transmission 11 , a folding head 12 , slides 13 and and 14 and a nut 15 for driving the wire feed 16 .

En examinant la figure, on remarque que le fil 16 pénètre dans la tête de pliage 12, après être passé par le dresse-fil 1, le coulisseau d'amenage 2, équipé de sa pince d'amenage 3 et par la pince anti-retour 8.By examining the figure, we note that the wire 16 enters the folding head 12 , after having passed through the wire straightener 1 , the feed slide 2 , equipped with its feed clamp 3 and by the anti-gripper back 8 .

Pour obtenir l'avance, pas par pas, du fil 16 et son orientation en fonction du pliage dans des plans différents, il suffit donc de solidariser temporairement le fil 16 dans le coulisseau d'amenage 2, par action sur la pince d'amenage 3, puis de mettre en fonction le moto-réducteur d'avance 5 et le moteur de rotation 6 selon des séquences prédéterminées, contrôlées par l'automate programmable, afin d'obtenir le pliage désiré. En effet, le déplacement de l'amenage est assuré par l'intermédiaire de la vis 7, entraînée en rotation par le moto-réducteur 5, et par l'écrou 15 solidaire du coulisseau 14 qui, avec le coulisseau 13, assure le déplacement de l'ensemble de dressage et d'amenage par rapport au rail de guidage 4, alors que l'orientation dans les plans choisis, en fonction du déroulement des séquences de pliage, est obtenu par l'intermédiaire du moteur 6 et de la transmission 11.To obtain the advance, step by step, of the wire 16 and its orientation as a function of folding in different planes, it suffices therefore to temporarily secure the wire 16 in the feed slide 2 , by action on the feed clamp 3 , then to put the feed motor 5 and the rotation motor 6 into operation according to predetermined sequences, controlled by the programmable controller, in order to obtain the desired folding. Indeed, the movement of the feed is ensured by means of the screw 7 , driven in rotation by the gear motor 5 , and by the nut 15 secured to the slide 14 which, with the slide 13 , ensures the movement of the dressing and feeding assembly with respect to the guide rail 4 , while the orientation in the chosen planes, as a function of the unfolding of the folding sequences, is obtained by means of the motor 6 and the transmission 11 .

Après chaque avance ou rotation de l'amenage, un pliage est effectué par un outil 10, alternatif ou rotatif sur des mandrins de forme, montés dans un magasin d'outils 9, à déplacement rotatif ou alternatif.After each advance or rotation of the feed, a folding is carried out by a tool 10 , alternating or rotary on shaped mandrels, mounted in a tool magazine 9 , with rotary or alternating movement.

Après la réalisation de chaque pièce et coupure du fil à la longueur désirée, il suffit, pour obtenir le dressage du fil 16 de retenir l'extrémité de celui-ci par la pince anti-retour 8, avant d'assurer le recul de l'amenage par l'intermédiaire du motoréducteur 5 ce qui élimine la contrainte de poussage du fil à travers les galets du dresse-fil 1.After the completion of each piece and cutting of the wire to the desired length, it suffices, to obtain the straightening of the wire 16, to retain the end of the latter by the non-return clamp 8 , before ensuring the retraction of the feed through the gearmotor 5 which eliminates the stress of pushing the wire through the rollers of the wire straightener 1 .

Le fait que le dresse-fil 1 soit solidaire du coulisseau d'amenage 2 permet de faire reculer le fil 16, sans contrainte sur celui-ci, afin d'effectuer certains types de pliages ou de coupes particulières: coupage dans le rayon du pliage, par exemple.The fact that the wire straightener 1 is integral with the feed slide 2 makes it possible to roll back the wire 16 , without constraint on the latter, in order to carry out certain types of bending or particular cuts: cutting within the radius of the bending , for example.

Sur la figure 2, on a représenté une variante de tête de pliage. Le fil est toujours référencé 16 et l'on maintient la pince anti-retour 8. Le magasin d'outils 9 et l'outil de cambrage 10 sont supprimés au profit de la tête 20.In FIG. 2 , a variant of the folding head is shown. The wire is always referenced 16 and the non-return clamp 8 is maintained. The tool magazine 9 and the bending tool 10 are eliminated in favor of the head 20 .

Celle-ci comprend une structure mobile 21 par rapport au bâti 22 dans le sens vertical ainsi qu'indiqué par la double flèche 23.This comprises a movable structure 21 relative to the frame 22 in the vertical direction as indicated by the double arrow 23 .

Le mouvement peut être obtenu par un moteur 24 solidaire du bâti 22 entraînant une vis à billes 25 mais pourrait l'être par tout moyen équivalent tel qu'un vérin hydraulique ou un moteur pas à pas par exemple.The movement can be obtained by a motor 24 secured to the frame 22 driving a ball screw 25 but could be by any equivalent means such as a hydraulic cylinder or a stepping motor for example.

La structure mobile 21 comprend deux moyens de déplacement 40 et 50 respectivement en translation et en rotation. Le premier moyen de déplacement a pour but de déplacer des galets 26,27 placés sur une tête porte-galets 28. Cette dernière comprend un tenon 31 dont une des faces latérales est usinée de crans 29 à la façon d'une crémaillère 30. Le tenon peut glisser dans une rainure 32 d'un support de tête 33, rainure dans laquelle on voit dépasser les dents d'un pignon 36 porté en bout d'arbre 34 d'un moteur 35.The mobile structure 21 comprises two displacement means 40 and 50 respectively in translation and in rotation. The first displacement means has the purpose of displacing rollers 26, 27 placed on a roller bearing head 28 . The latter comprises a tenon 31 , one of the lateral faces of which is machined with notches 29 in the manner of a rack 30 . The post can slide into a groove 32 of a head support 33 , a groove in which the teeth of a pinion 36 can be seen extending at the end of the shaft 34 of a motor 35 .

Le deuxième moyen 50 est constitué d'un moteur 51 entraînant un arbre 52 lui-même entraînant par l'intermédiaire d'une courroie 53 un arbre creux 54 coaxial avec l'arbre 34 et solidaire du support de tête 33.The second means 50 consists of a motor 51 driving a shaft 52 itself driving through a belt 53 a hollow shaft 54 coaxial with the shaft 34 and integral with the head support 33 .

Le fonctionnement de cette tête de pliage est le suivant:
Le fil 16, étant amené et correctement orienté par la machine, a son axe 160 situé entre les galets 26 et 27. En actionnant le moyen de déplacement 40 par l'arbre 34, le pignon 36 et la crémaillère 30, on amène la tête 28 donc le galet de travail de façon que son axe coïncide avec celui du moteur 35 donc avec celui de l'arbre creux 54.The operation of this folding head is as follows:
The wire 16 , being brought in and correctly oriented by the machine, has its axis 160 situated between the rollers 26 and 27 . By actuating the displacement means 40 by the shaft 34 , the pinion 36 and the rack 30 , the head 28 is brought therefore the working roller so that its axis coincides with that of the motor 35 therefore with that of the hollow shaft 54 .

Simultanément, le troisième moyen constitué par le moteur 24 permet d'ajuster l'axe 160 du fil de façon à ce qu'il soit tangent à la surface du galet de travail.Simultaneously, the third means constituted by the motor 24 makes it possible to adjust the axis 160 of the wire so that it is tangent to the surface of the working roller.

Le pliage est alors effectué par actionnement de l'arbre 52 grâce au moteur 51, l'arbre creux tourne d'un angle correspondant, entraînant le support 33 qui par la glissière 32 entraîne simultanément la tête porte-galets et donc les galets. Ainsi, on peut faire pivoter le galet inférieur 27 autour du galet 26 et vice versa, si bien que l'on obtient un pliage vers le haut ou vers le bas avec une simple translation préalable.The folding is then carried out by actuation of the shaft 52 thanks to the motor 51 , the hollow shaft rotates by a corresponding angle, driving the support 33 which by the slide 32 simultaneously drives the roller carrier head and therefore the rollers. Thus, one can rotate the lower roller 27 around the roller 26 and vice versa, so that one obtains a folding up or down with a simple translation prior.

D'autre part, les rayons de courbure des galets peuvent être différents ce qui multiplie d'autant les possibilités en réalisant des pliages de rayons différents.On the other hand, the radii of curvature of the rollers can be different, which multiplies all the more possibilities by making folds of different radii.

L'invention n'est pas limitée au seul mode de réalisation qui vient d'être décrit et de sa variante mais elle en embrasse au contraire toutes les variantes qui apparaîtraient à l'homme de l'art.The invention is not limited to the single embodiment which has just been described and of its variant, but on the contrary embraces all the variants which would appear to those skilled in the art.

Claims (12)

1) Procédé de pliage de fils métalliques dans les trois dimensions, caractérisé en ce qu'il consiste à maintenir la ou les têtes de pliage fixes et à faire tourner et déplacer solidairement les dispositifs d'amenage et de dressage autour de l'axe du fil en entraînant celui-ci en rotation autour de son axe, de façon à orienter ledit fil dans des plans différents selon les pliages à réaliser à faire se déplacer longitudinalement le fil pas par pas dans les deux sens pendant les opérations de pliage, à supprimer la torsion du fil par retour de l'ensemble d'amenage et de dressage à son orientation d'origine à retenir le fil par son extrémité puis à désolidariser le fil de l'ensemble amenage-dresse-fil et à assurer le dressage du fil en une seule fois lors du retour en position neutre de l'ensemble d'amenage et de dressage.1) Method for bending metal wires in three dimensions, characterized in that it consists in keeping the bending head or heads fixed and in rotating and moving the feeding and dressing devices together around the axis of the wire by driving it in rotation about its axis, so as to orient said wire in different planes according to the bends to be made to make the wire move longitudinally step by step in both directions during the bending operations, to remove the twisting of the wire by return of the feeding and dressing assembly to its original orientation to retain the wire by its end then to separate the wire from the feeding-straightening-wire assembly and to ensure the dressing of the wire in one go when returning the feed and dressing assembly to neutral position. 2) Procédé selon la revendication 1, caractérisé en ce que le pliage s'effectue par l'intermédiaire d'outils fixés autour de l'axe du fil.2) Method according to claim 1 , characterized in that the folding is carried out by means of tools fixed around the axis of the wire. 3) Machine à plier les fils métalliques dans les trois dimensions, caractérisée en ce qu'elle comporte essentiellement une ou plusieurs tête de pliage fixes (12) une pince de retenue (8) et un ensemble d'amenage et de dressage mobile en rotation et en translation.3) Machine for bending metal wires in three dimensions, characterized in that it essentially comprises one or more fixed bending heads (12), a retaining clamp (8) and a set of feed and dressing movable in rotation and in translation. 4) Machine selon la revendication 3, caractérisée en ce que l'ensemble d'amenage et de dressage est constitué de la combinaison d'un dresse-fil (1) et d'un coulisseau (2) équipé d'une pince d'amenage (3).4) Machine according to claim 3 , characterized in that the supply and dressing assembly is consisting of the combination of a wire straightener (1) and a slide (2) equipped with a feed clamp (3) . 5) Machine selon la revendication 3, caractérisée en ce que l'ensemble d'amenage et de dressage est rendu mobile en translation par l'intermédiaire d'un rail de guidage (4), de deux coulisseaux (13 et 14) d'une vis (7) et d'un écrou (15) solidaire de l'un des coulisseaux (14).5) Machine according to claim 3 , characterized in that the supply and dressing assembly is made movable in translation by means of a guide rail (4) , two slides (13 and 14) of a screw (7) and a nut (15) integral with one of the slides (14) . 6) Machine selon les revendications 3 et 5, caractérisée en ce que l'ensemble d'amenage et de dressage est rendu mobile en rotation par rapport aux coulisseaux (13 et 14) par l'intermédiaire d'une transmission (11) et d'un moteur (6) fixé à l'un des coulisseaux (14).6) Machine according to claims 3 and 5 , characterized in that the supply and dressing assembly is made rotatable relative to the slides (13 and 14) via a transmission (11) and d 'a motor (6) fixed to one of the slides (14) . 7) Machine selon la revendication 3, caractérisée en ce que la tête de pliage fixe est constituée d'une tête porte-galets (28) munie d'au moins deux galets (26,27) pouvant être déplacée par un premier moyen (40) dans le sens vertical dans une glissière (32) usinée dans une structure support (33) mise en rotation par un deuxième moyen (50) autour de l'axe de l'un ou l'autre des galets, un troisième moyen (24,25) permettant de conserver l'axe du fil (160) dans une position constante.7) Machine according to claim 3 , characterized in that the fixed folding head consists of a roller holder head (28) provided with at least two rollers (26,27) which can be moved by a first means (40 ) vertically in a slide (32) machined in a support structure (33) rotated by a second means (50) around the axis of one or other of the rollers, a third means (24 , 25) allowing the axis of the wire (160) to be kept in a constant position. 8) Machine selon la revendication 7, caractérisée en ce que le deuxième moyen est un moteur (51) entraînant en rotation le premier moyen (40) et la tête porte-­galets (28) par un arbre creux (54 solidaire de ce premier moyen.8) Machine according to claim 7 , characterized in that the second means is a motor (51) driving in rotation the first means (40) and the roller carrier head (28) by a hollow shaft (54 integral with this first means . 9) Machine selon la revendication 7, caractérisée en ce que le premier moyen de déplacement (40) dans le sens vertical de la tête porte-galets (28) est une crémaillère (30) en prise sur le pignon (36) d'extrémité de l'arbre (34) d'un moteur (35).9) Machine according to claim 7 , characterized in that the first displacement means (40) in the vertical direction of the roller carrier head (28) is a rack (30) engaged on the end pinion (36) of the shaft (34) of an engine (35) . 10) Machine selon la revendication 7, caractérisée en ce que le troisième moyen est un moteur (24) de translation dans une direction (23) perpendiculaire à l'axe du fil.10) Machine according to claim 7 , characterized in that the third means is a motor (24) for translation in a direction (23) perpendicular to the axis of the wire. 11) Machine selon l'une quelconque des revendications 8 et 10, caractérisée en ce que les deux moteurs (24, 35) sont asservis.11) Machine according to any one of claims 8 and 10 , characterized in that the two motors (24, 35) are controlled. 12) Machine selon l'une quelconque des revendications 7 à 11, caractérisée en ce que les galets (26,27) ont des diamètres différents.12) Machine according to any one of claims 7 to 11 , characterized in that the rollers (26,27) have different diameters.
EP87401792A 1986-08-04 1987-07-31 Method and apparatus for bending metallic wires Withdrawn EP0258109A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8611352A FR2602159B1 (en) 1986-08-04 1986-08-04 METHOD AND MACHINE FOR BENDING METAL WIRES
FR8611352 1986-08-04

Publications (1)

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EP0258109A1 true EP0258109A1 (en) 1988-03-02

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EP87401792A Withdrawn EP0258109A1 (en) 1986-08-04 1987-07-31 Method and apparatus for bending metallic wires

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EP (1) EP0258109A1 (en)
FR (1) FR2602159B1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491195A1 (en) * 1990-12-17 1992-06-24 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Bending-shaping machine for sections and method to apply bends in the trailing end of sections
US5136867A (en) * 1987-09-09 1992-08-11 Spuhl Ag Automatic frame bending machine for bending of steel rods or band steel
US5144829A (en) * 1989-03-06 1992-09-08 M. E. P. Macchine Elettroniche Piegatrici Spa Shears unit
GR1001325B (en) * 1991-05-08 1993-08-31 Panagiotis Anagnostopoulos Method and mechanism for the production of wiry, spiral-shaped product.
DE19503850C1 (en) * 1995-02-06 1996-06-13 Post Friedhelm Sondermasch Non-rotating straightening unit for bending machines with an integrated measuring system
EP0719604A1 (en) * 1994-12-30 1996-07-03 OMD OFFICINA MECCANICA DOMASO S.p.A. Wire guide for bending and twisting machines with improved wire engagement means
WO2003008128A1 (en) * 2001-07-19 2003-01-30 M.E.P. Macchine Elettroniche Piegatrici Spa Bending machine for profiles and relative bending method
JP2015139817A (en) * 2014-01-30 2015-08-03 矢崎総業株式会社 Production apparatus of linear member

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU66447A1 (en) * 1972-04-12 1973-02-01
AT368725B (en) * 1981-01-30 1982-11-10 Evg Entwicklung Verwert Ges COMBINED LEVELING AND BENDING MACHINE
EP0079587A1 (en) * 1981-11-18 1983-05-25 Oemb SA Wire-bending machine
EP0108695A1 (en) * 1982-11-08 1984-05-16 Autocoussin Industrie Automatic machine for bending thin and rectilinear metallic elements, especially metal wire, into a spatial configuration
EP0121826A2 (en) * 1983-04-08 1984-10-17 Heinz Finzer KG Stamping and bending tool aggregate
FR2553314A1 (en) * 1983-10-12 1985-04-19 Piegatrici Macch Elettr Machine making concrete reinforcing stirrups
GB2172229A (en) * 1985-03-12 1986-09-17 Alpha Maschinenbau Ag Bending apparatus with bending cores on a turret
EP0209876A2 (en) * 1985-07-22 1987-01-28 BLM S.p.A. Universal bending machine and respective method for bending
GB2181680A (en) * 1985-10-21 1987-04-29 Usui Kokusai Sangyo Kk Pipe bending device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE368725C (en) * 1920-11-12 1923-02-09 Kaiser Fa J Slide chair for switch blades and process for its manufacture

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU66447A1 (en) * 1972-04-12 1973-02-01
AT368725B (en) * 1981-01-30 1982-11-10 Evg Entwicklung Verwert Ges COMBINED LEVELING AND BENDING MACHINE
EP0079587A1 (en) * 1981-11-18 1983-05-25 Oemb SA Wire-bending machine
EP0108695A1 (en) * 1982-11-08 1984-05-16 Autocoussin Industrie Automatic machine for bending thin and rectilinear metallic elements, especially metal wire, into a spatial configuration
EP0121826A2 (en) * 1983-04-08 1984-10-17 Heinz Finzer KG Stamping and bending tool aggregate
FR2553314A1 (en) * 1983-10-12 1985-04-19 Piegatrici Macch Elettr Machine making concrete reinforcing stirrups
GB2172229A (en) * 1985-03-12 1986-09-17 Alpha Maschinenbau Ag Bending apparatus with bending cores on a turret
EP0209876A2 (en) * 1985-07-22 1987-01-28 BLM S.p.A. Universal bending machine and respective method for bending
GB2181680A (en) * 1985-10-21 1987-04-29 Usui Kokusai Sangyo Kk Pipe bending device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136867A (en) * 1987-09-09 1992-08-11 Spuhl Ag Automatic frame bending machine for bending of steel rods or band steel
US5144829A (en) * 1989-03-06 1992-09-08 M. E. P. Macchine Elettroniche Piegatrici Spa Shears unit
EP0491195A1 (en) * 1990-12-17 1992-06-24 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Bending-shaping machine for sections and method to apply bends in the trailing end of sections
GR1001325B (en) * 1991-05-08 1993-08-31 Panagiotis Anagnostopoulos Method and mechanism for the production of wiry, spiral-shaped product.
EP0719604A1 (en) * 1994-12-30 1996-07-03 OMD OFFICINA MECCANICA DOMASO S.p.A. Wire guide for bending and twisting machines with improved wire engagement means
DE19503850C1 (en) * 1995-02-06 1996-06-13 Post Friedhelm Sondermasch Non-rotating straightening unit for bending machines with an integrated measuring system
WO2003008128A1 (en) * 2001-07-19 2003-01-30 M.E.P. Macchine Elettroniche Piegatrici Spa Bending machine for profiles and relative bending method
US7260969B2 (en) 2001-07-19 2007-08-28 M.E.P. Macchine Elettroniche Piegatrici Spa Bending machine for profiles and relative bending method
JP2015139817A (en) * 2014-01-30 2015-08-03 矢崎総業株式会社 Production apparatus of linear member

Also Published As

Publication number Publication date
FR2602159B1 (en) 1993-12-10
FR2602159A1 (en) 1988-02-05

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