EP1311356B1 - Tube bending machine - Google Patents
Tube bending machine Download PDFInfo
- Publication number
- EP1311356B1 EP1311356B1 EP01919545A EP01919545A EP1311356B1 EP 1311356 B1 EP1311356 B1 EP 1311356B1 EP 01919545 A EP01919545 A EP 01919545A EP 01919545 A EP01919545 A EP 01919545A EP 1311356 B1 EP1311356 B1 EP 1311356B1
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- EP
- European Patent Office
- Prior art keywords
- tube
- mould
- bending
- bending head
- counter
- 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
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- 238000005452 bending Methods 0.000 title claims abstract description 49
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 230000033764 rhythmic process Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000003462 Bender reaction Methods 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- 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
Definitions
- the present invention relates to a machine for bending of tubes in series and at high rate.
- These devices have a shape having the radius of desired curvature, and a counterform capable of being displaced coaxially with said shape, on the periphery thereof, in driving the tube to be bent which is wedged between said form and said counter-form, so as to wind it on said form.
- a tube can not be arched or bent in the same way as is a wire, because because of its axial channel, a tube risk to be crushed.
- form and counter-form comprise each a groove of cross section in a circular arc of radius of curvature corresponding to the diameter of the tube to be arched.
- the counterform is in the form of a movable block in a limited pivoting manner, and in which is performed longitudinally the throat, or a grooved roller mounted in free rotation. The bending operation is made while the tube is in contact with the funds of two throats.
- throats are enveloping, that is to say depths with a maximum depth equal to the radius of the tube at arch, and less said tube may be crushed.
- the tube is thus retained laterally by the grooves of the form and counter-form, so that to disengage it side of the tool, to remove it or to perform a second camber in another direction, the tool is equipped with means to distance the form from the counterform.
- These means allow the replacement of the form by a other of a different radius of curvature and / or adapted to a tube of another diameter.
- the present invention relates more particularly machines that allow the bending of tubes in series and at a high rate, these tubes being notably intended for the production of frames.
- These machines include a means for feeding the tube which supplies a bending head equipped with movable bending tools with respect to other.
- the present invention aims to remedy the various disadvantages mentioned above, by proposing a machine for bending of a tube, which authorizes working cadences high, and which allows in particular to arch a tube at 180 °, without risk of crushing the tube.
- the machine for bending a tube in series and at a rate high comprises a bending head comprising a form and a counter-form which comprise in periphery a groove of semicircular section, as well as means for driving said counterform in rotation coaxially with said shape so as to cause the tube to arching and winding it on said shape, and it is characterized essentially in that said form consists of a disk having a cutaway disposed along a rope of said disk, and in that it includes means for moving said bending head relative to the axis of the tube, according to a trajectory passing through the axes of said form and counter-form, as well as means for rotating axially said shape, regardless of the displacement of said counterform.
- the means for moving the head of bending with respect to the tube drive it according to a rectilinear trajectory.
- the means for moving said head of bending relative to the tube cause it to Curved trajectory.
- the counterform consists of a roller.
- the counterform consists of a pressing block.
- the means for moving the head of bending in relation to the tube, and the means to make axially rotate the form consist of stepper motors digitally controlled.
- the bending head is carried by a movable arm in pivoting, on which it is movable pivotally coaxially with the form, the latter being mounted mobile in axial pivoting on said bending head.
- FIG. 1 represents the bending head 1 of a machine according to the invention, on which is placed a tube 2 maintained by a feeding means, not shown, which consists of a element able to hold the tube 2 and to drive it axially in one sense as in the other as the materializes the double X arrow.
- the bending head 1 has a shape 3 and a counter form 4, between which passes the tube 2.
- the shape 3 consists of a disc having a cutaway 30 disposed along a rope, while its curved edge 31 comprises a groove 32, which is represented by transparency only the bottom 33, of semicircular cross-section of radius equal to that of the tube 2.
- Counterform 4 consists of a roller mounted crazy on a tree 40, and which has on the periphery a groove 41, of which is represented by transparency as the bottom 42, section transverse semicircular also of the same radius as that of the tube 2.
- the form 3 is rotatably mounted on the bending head 1 by via a shaft 34 adapted to be rotated by motor means, not shown, so as to rotate the shape 3 axially relative to the bending head 1, in one way or the other, according to the double arrow Y.
- the bending head 1 is carried by an arm, not shown, on which it can, by means of motor means, also not shown, pivot coaxially with the axis of rotation of the form 3, in one direction or the other, according to the double arrow Z.
- the arm which carries the head of bending 1, is movable relative to the tube of the feeding means 2, so that it describes a trajectory through the trees 34 and 40.
- this trajectory which is materialized by the double arrow R, is curve, it results from the pivoting of the arm. It will be noted that this trajectory can be, preferably, rectilinear, which can however, make the construction of the machine more complex.
- FIGS. 2a, 2b, 2c and 2d one can see different phases of a bending operation of the tube 2, knowing that Figure 1 represents a preliminary phase where the pan cut 30 is at the right of the counter-form 4 and the head of bending 1 is positioned so that the tube 2 comes to cutaway contact 30.
- the following phase represented in FIG. 2b, consists in rotating the shape 3 according to Y A so that the tube 2, which is in the locking position in the axial direction, is engaged in the groove 32 and then blocks the shape 3 in this position with respect to the bending head 1.
- the tube 2 is thus sandwiched between the form 3 and the counterform 4, in the throats thereof respectively 32 and 41.
- the grooves 32 and 41 are preferably semicircular, and of a diameter equal to that of the tube 2, so that it operates a close contact between the tube 2 and the bottoms 33 and 42 of the grooves, respectively 32 and 41.
- the depth of the grooves 32 and 41 is equal to radius of the tube 2
- the height of the rope according to which is realized the cut 30 is equal to the diameter of the tube.
- the relative immobility of the form 3 is obtained from different ways according to the architecture of the bending head 1.
- the tube 2 by immobilizing it on the form 3 via the counterform 4, which in this case may not be a roller but a locking means such as a pressure block for example, and combining on the one hand a rotation of the bending head 1 according to Z B synchronized to a rotation along Y B of the form 3 having previously rotated along Y A to not not winding the tube 2 on the cutaway 30, and secondly a proportional advance movement of the tube 2 according to X.
- the counterform 4 which in this case may not be a roller but a locking means such as a pressure block for example
- This variant makes it possible to arch a tube nearby end, or near a camber or discharge.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
La présente invention a pour objet une machine pour le cambrage de tubes en série et à cadence élevée.The present invention relates to a machine for bending of tubes in series and at high rate.
On connaít déjà de nombreux dispositifs permettant de cambrer, ou cintrer, des tubes, et qui consistent pour la plupart en des outils à main, fonctionnant électriquement ou non, notamment utilisés par les professionnels du bâtiment pour cintrer des tubes de cuivre en vue de la réalisation d'installations sanitaires.We already know many devices for arching, or bend, tubes, which consist for the most part of hand tools, electrically operated or not, in particular used by building professionals to bend copper tubes for the installation of installations health.
Ces dispositifs comportent une forme présentant le rayon de courbure désiré, et une contre-forme apte à être déplacée coaxialement à ladite forme, sur le pourtour de celle-ci, en entraínant le tube à cintrer qui est coincé entre ladite forme et ladite contre-forme, de manière à l'enrouler sur ladite forme.These devices have a shape having the radius of desired curvature, and a counterform capable of being displaced coaxially with said shape, on the periphery thereof, in driving the tube to be bent which is wedged between said form and said counter-form, so as to wind it on said form.
Un tube ne peut pas être cambré ou cintré de la même manière que l'est un fil, puisque du fait de son canal axial, un tube risque d'être écrasé. Aussi, la forme et la contre-forme comportent chacune une gorge de section transversale en arc de cercle de rayon de courbure correspondant au diamètre du tube à cambrer.A tube can not be arched or bent in the same way as is a wire, because because of its axial channel, a tube risk to be crushed. Also, form and counter-form comprise each a groove of cross section in a circular arc of radius of curvature corresponding to the diameter of the tube to be arched.
De manière générale, la contre-forme se présente sous la forme d'un bloc mobile en pivotement de manière limitée, et dans lequel est pratiquée longitudinalement la gorge, ou bien d'un galet à gorge monté en rotation libre. L'opération de cambrage est réalisée alors que le tube est au contact avec les fonds des deux gorges.In general, the counterform is in the form of a movable block in a limited pivoting manner, and in which is performed longitudinally the throat, or a grooved roller mounted in free rotation. The bending operation is made while the tube is in contact with the funds of two throats.
On notera que plus les gorges sont enveloppantes, c'est-à-dire profondes avec une profondeur maximum égale au rayon du tube à cambrer, et moins ledit tube risque d'être écrasé. Note that the throats are enveloping, that is to say depths with a maximum depth equal to the radius of the tube at arch, and less said tube may be crushed.
Le tube est donc retenu latéralement par les gorges de la forme et de la contre-forme, en sorte que pour le désengager latéralement de l'outil, afin de l'enlever ou d'y réaliser un second cambrage dans une autre direction, l'outil est muni de moyens permettant d'éloigner la forme de la contre-forme. Ces moyens permettent en outre le remplacement de la forme par une autre d'un rayon de courbure différent et/ou adaptée à un tube d'un autre diamètre.The tube is thus retained laterally by the grooves of the form and counter-form, so that to disengage it side of the tool, to remove it or to perform a second camber in another direction, the tool is equipped with means to distance the form from the counterform. These means allow the replacement of the form by a other of a different radius of curvature and / or adapted to a tube of another diameter.
Pour permettre le désengagement du tube, il est prévu sur les cintreuses d'utiliser des formes présentant un pan coupé en sorte de permettre de désengager le tube de la gorge de la contre-forme. C'est le cas par exemple de la machine du document GB 1.298.666, laquelle est destinée à plier des tubes en U en réalisant simultanément deux plis à angle droit chacun sur une contre-forme. On notera que pour permettre de désengager le tube, les deux contre-formes comportent chacune deux pans coupés.To allow the disengagement of the tube, it is planned on benders to use shapes having a cutaway in sort of allow to disengage the tube from the throat of the against form. This is the case, for example, with the document machine GB 1,298,666, which is intended to bend U-shaped tubes into simultaneously making two folds at right angles each on a against form. It should be noted that to allow disengagement tube, the two cons-forms each comprise two sections cut.
On notera également que la machine objet de ce document n'est pas destiné au même usage que celui de la présente invention et qu'en aucun cas elle ne saurait réaliser les mêmes pliages.It should also be noted that the machine that is the subject of this document is not not for the same purpose as that of the present invention and that in no case it can not achieve the same folds.
En effet, la présente invention concerne plus particulièrement les machines qui permettent de réaliser le cambrage de tubes en série et à une cadence élevée, ces tubes étant notamment destinés à la réalisation de châssis. Ces machines comportent un moyen d'amenage du tube qui approvisionne une tête de cambrage équipée d'outils de cambrage mobiles les uns par rapport aux autres.Indeed, the present invention relates more particularly machines that allow the bending of tubes in series and at a high rate, these tubes being notably intended for the production of frames. These machines include a means for feeding the tube which supplies a bending head equipped with movable bending tools with respect to other.
Ces machines sont toutefois plus particulièrement destinées à cambrer du fil, aussi, le cambrage obtenu n'est pas toujours d'une excellente qualité, le tube étant dans la plupart des cas légèrement écrasé au niveau de sa ou ses parties cintrées. These machines are, however, more particularly intended for to bend wire, too, the bending obtained is not always of excellent quality, the tube being in most cases slightly crushed at its bent part or parts.
Par ailleurs, sur ce type de machine, déplacer la forme par rapport à la contre-forme pour permettre le dégagement latéral du tube, constitue une perte de temps qui est préjudiciable à la productivité.Moreover, on this type of machine, move the shape by relative to the counter-form to allow lateral clearance tube is a waste of time which is detrimental to the productivity.
En outre, l'utilisation des machines de ce type est limitée, celles-ci ne permettant pas par exemple de cambrer un tube à 180° puis de le désengager afin de l'enlever ou de réaliser un cambrage dans une autre direction.In addition, the use of machines of this type is limited, these do not allow for example to arch a tube to 180 ° then disengage it in order to remove it or to perform a bending in another direction.
On notera qu'il est souvent nécessaire de réaliser sur un tube deux cambrages, voire plus, de directions différentes, ce qui est obtenu par le désengagement du tube, puis en le repositionnant après lui avoir fait opérer un pivotement axial. Sur une machine telle que précitée, le pivotement axial du tube est relatif, c'est en effet la tête de cambrage qui tourne autour de l'axe du tube ; or s'il n'existe pas de possibilité de désengagement latéral, qui plus est lors d'un cambrage à 180°, ledit pivotement est impossible.Note that it is often necessary to make a tube two or more cambrings of different directions, which is obtained by disengaging the tube and then repositioning after having made it operate an axial pivoting. On a machine as mentioned above, the axial pivoting of the tube is relative, it is indeed the bending head that rotates around the axis of the tube; if there is no possibility of Lateral disengagement, moreover during a 180 ° bending, said pivoting is impossible.
La présente invention a pour but de remédier aux divers inconvénients précités, en proposant une machine pour le cambrage d'un tube, qui autorise des cadences de travail élevées, et qui permet notamment de cambrer un tube à 180°, sans risque d'écrasement du tube.The present invention aims to remedy the various disadvantages mentioned above, by proposing a machine for bending of a tube, which authorizes working cadences high, and which allows in particular to arch a tube at 180 °, without risk of crushing the tube.
La machine pour le cambrage d'un tube en série et à cadence élevée selon l'invention comporte une tête de cambrage comprenant une forme et une contre-forme qui comportent en périphérie une gorge de section semi-circulaire, ainsi que des moyens permettant d'entraíner ladite contre-forme en rotation coaxialement à ladite forme de manière à entraíner le tube à cambrer et à l'enrouler sur ladite forme, et elle se caractérise essentiellement en ce que ladite forme consiste en un disque présentant un pan coupé disposé selon une corde dudit disque, et en ce qu'elle comporte des moyens permettant de déplacer ladite tête de cambrage par rapport à l'axe du tube, selon une trajectoire passant par les axes desdites forme et contre-forme, ainsi que des moyens permettant de faire tourner axialement ladite forme, indépendamment du déplacement de ladite contre-forme.The machine for bending a tube in series and at a rate high according to the invention comprises a bending head comprising a form and a counter-form which comprise in periphery a groove of semicircular section, as well as means for driving said counterform in rotation coaxially with said shape so as to cause the tube to arching and winding it on said shape, and it is characterized essentially in that said form consists of a disk having a cutaway disposed along a rope of said disk, and in that it includes means for moving said bending head relative to the axis of the tube, according to a trajectory passing through the axes of said form and counter-form, as well as means for rotating axially said shape, regardless of the displacement of said counterform.
Par le positionnement du pan coupé de la forme, au droit de la contre-forme, et par le déplacement de la tête de cambrage, et donc de la forme et de la contre-forme par rapport à l'axe du tube, il est possible de dégager latéralement le tube cambré, en prévoyant un pan coupé de dimension adéquate, c'est-à-dire lorsque la distance qui sépare le pan coupé du bord de la contre-forme est au moins égale au diamètre dudit tube.By positioning the cutaway of the shape, to the right of the counter-form, and by the displacement of the bending head, and so of the form and against-form with respect to the axis of the tube, it is possible to release the cambered tube laterally, in providing for a cut-off of adequate size, that is to say when the distance between the cutaway and the edge of the counterform is at least equal to the diameter of said tube.
Selon une caractéristique additionnelle de la machine selon l'invention, les moyens permettant de déplacer la tête de cambrage par rapport au tube, entraínent celle-ci selon une trajectoire rectiligne.According to an additional feature of the machine according to the invention, the means for moving the head of bending with respect to the tube, drive it according to a rectilinear trajectory.
Selon une autre caractéristique additionnelle de la machine selon l'invention, les moyens permettant de déplacer ladite tête de cambrage par rapport au tube entraínent celle-ci selon une trajectoire courbe.According to another additional feature of the machine according to the invention, the means for moving said head of bending relative to the tube cause it to Curved trajectory.
Selon une autre caractéristique additionnelle de la machine selon l'invention, la contre-forme consiste en un galet.According to another additional feature of the machine according to the invention, the counterform consists of a roller.
Selon une autre caractéristique additionnelle de la machine selon l'invention, la contre-forme consiste en un bloc presseur.According to another additional feature of the machine according to the invention, the counterform consists of a pressing block.
Selon une autre caractéristique additionnelle de la machine selon l'invention, les moyens permettant de déplacer la tête de cambrage par rapport au tube, et les moyens permettant de faire tourner axialement la forme, consistent en des moteurs pas à pas commandés numériquement. According to another additional feature of the machine according to the invention, the means for moving the head of bending in relation to the tube, and the means to make axially rotate the form, consist of stepper motors digitally controlled.
Selon un mode de réalisation préférentiel de la machine selon l'invention, la tête de cambrage est portée par un bras mobile en pivotement, sur lequel elle est mobile en pivotement coaxialement à la forme, cette dernière étant montée mobile en pivotement axial sur ladite tête de cambrage.According to a preferred embodiment of the machine according to the invention, the bending head is carried by a movable arm in pivoting, on which it is movable pivotally coaxially with the form, the latter being mounted mobile in axial pivoting on said bending head.
Les avantages et les caractéristiques de la machine selon l'invention, ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente un mode de réalisation non limitatif.The advantages and characteristics of the machine according to invention, will become clearer from the description which follows and which refers to the annexed drawing, which represents a non-limiting embodiment.
Dans le dessin annexé :
- la figure 1 représente une vue schématique partielle d'une machine pour le cambrage de tubes.
- les figures 2a, 2b, 2c et 2d représentent des vues schématiques partielles de la même machine lors de phases successives différentes d'une opération de cambrage.
- FIG. 1 represents a partial schematic view of a machine for bending tubes.
- Figures 2a, 2b, 2c and 2d show partial schematic views of the same machine in successive phases different from a bending operation.
La figure 1 représente la tête de cambrage 1 d'une machine selon l'invention, sur laquelle est mis en place un tube 2 maintenu par un moyen d'amenage, non représenté, qui consiste en un élément apte à maintenir le tube 2 et à l'entraíner axialement dans un sens comme dans l'autre comme le matérialise la double flèche X.FIG. 1 represents the bending head 1 of a machine according to the invention, on which is placed a tube 2 maintained by a feeding means, not shown, which consists of a element able to hold the tube 2 and to drive it axially in one sense as in the other as the materializes the double X arrow.
La tête de cambrage 1 porte une forme 3 et une contre forme 4,
entre lesquelles passe le tube 2.The bending head 1 has a
La forme 3 consiste en un disque présentant un pan coupé 30
disposé selon une corde, tandis que son bord courbe 31 comporte
une gorge 32, dont n'est représenté par transparence que le fond
33, de section transversale semi-circulaire de rayon égal à
celui du tube 2. The
La contre-forme 4 consiste en un galet monté fou sur un arbre
40, et qui comporte en périphérie une gorge 41, dont n'est
représenté par transparence que le fond 42, de section
transversale semi-circulaire également de même rayon que celui
du tube 2.
La forme 3 est montée en rotation sur la tête de cambrage 1 par
l'intermédiaire d'un arbre 34 apte à être entraíné en rotation
par un moyen moteur, non représenté, en sorte de faire tourner
la forme 3 axialement par rapport à la tête de cambrage 1, dans
l'un ou l'autre sens, selon la double flèche Y.The
La tête de cambrage 1 est portée par un bras, non représenté,
sur lequel elle peut, par l'intermédiaire de moyens moteurs,
également non représentés, pivoter coaxialement à l'axe de
rotation de la forme 3, dans un sens comme dans l'autre, selon
la double flèche Z.The bending head 1 is carried by an arm, not shown,
on which it can, by means of motor means,
also not shown, pivot coaxially with the axis of
rotation of the
D'autre part, le bras, non représenté, qui porte la tête de
cambrage 1, est mobile par rapport au moyen d'amenage du tube 2,
en sorte qu'il décrive une trajectoire passant par les arbres 34
et 40. Dans le mode de réalisation représenté, cette
trajectoire, qui est matérialisée par la double flèche R, est
courbe, elle résulte du pivotement du bras. On notera que cette
trajectoire peut être, de préférence, rectiligne, ce qui peut
toutefois rendre plus complexe la construction de la machine.On the other hand, the arm, not shown, which carries the head of
bending 1, is movable relative to the tube of the feeding means 2,
so that it describes a trajectory through the
Les dimensions de la forme 3 et de la contre-forme 4, leur
entraxe, ainsi que la hauteur de la corde selon laquelle est
réalisé le pan coupé 30, sont tels que, lorsque le pan coupé 30
est au droit de la contre forme 4, il subsiste entre la forme 3
et la contre-forme 4 un espace au moins égal au diamètre du tube
2.The dimensions of
En référence maintenant aux figures 2a, 2b, 2c et 2d, on peut
voir différentes phases d'une opération de cambrage du tube 2,
sachant que la figure 1 représente une phase préalable où le pan
coupé 30 est au droit de la contre-forme 4 et la tête de
cambrage 1 est positionnée de manière que le tube 2 vienne au
contact du pan coupé 30.Referring now to FIGS. 2a, 2b, 2c and 2d, one can
see different phases of a bending operation of the tube 2,
knowing that Figure 1 represents a preliminary phase where the
Dans un but de clarté, les différents sens de rotation Y, Z et R seront affectés d'un indice A ou B selon qu'ils coïncident avec, respectivement, le sens horaire ou contrahoraire.For the sake of clarity, the different directions of rotation Y, Z and R will be assigned an index A or B according to whether they coincide with, respectively, clockwise or counter-clockwise.
Sur la figure 2a, par un mouvement de la tête de cambrage 1 dans
le sens RB, le fond 42 de la gorge 41 de la contre-forme 4 est
amené au contact du tube 2.In FIG. 2a, by a movement of the bending head 1 in the direction R B , the
La phase suivante, représentée sur la figure 2b, consiste à
faire tourner la forme 3 selon YA en sorte que le tube 2, qui est
en position de blocage dans le sens axial, soit engagé dans la
gorge 32, puis à bloquer la forme 3 dans cette position par
rapport à la tête de cambrage 1.The following phase, represented in FIG. 2b, consists in rotating the
Le tube 2 est ainsi enserré entre la forme 3 et la contre-forme
4, dans les gorges de celles-ci respectivement 32 et 41. Les
gorges 32 et 41 sont de préférence semi-circulaires, et d'un
diamètre égal à celui du tube 2, en sorte qu'il s'opère un
contact étroit entre le tube 2 et les fonds 33 et 42 des gorges,
respectivement 32 et 41.The tube 2 is thus sandwiched between the
Dans ce cas, la profondeur des gorges 32 et 41 est égale au
rayon du tube 2, et la hauteur de la corde selon laquelle est
réalisé le pan coupé 30 est égale au diamètre du tube.In this case, the depth of the
En référence maintenant à la figure 2c, on peut voir que la
rotation de la tête de cambrage 1 dans le sens ZB, entraíne la
contre-forme 4 en rotation coaxialement à la forme 3, laquelle
demeure dans la position prise lors de la phase précédente. Le
déplacement de la contre-forme 4 autour de la forme 3 a pour
conséquence l'enroulement du tube 2 sur cette dernière. Referring now to FIG. 2c, it can be seen that the rotation of the bending head 1 in the direction Z B causes the
L'immobilité relative de la forme 3 est obtenue de différentes
manières selon l'architecture de la tête de cambrage 1.The relative immobility of the
Ainsi, si les moyens moteurs qui entraínent la forme 3 sont
portés par la tête de cambrage 1, la rotation dans le sens ZB
doit être accompagnée d'une rotation inverse compensatrice de la
forme 3 dans le sens YA.Thus, if the motor means which cause the
Par contre, si la contre-forme 4 est montée en rotation sur
l'arbre 34 qui porte la forme 3, ce dernier peut être maintenu
fixe pendant le déplacement de la contre-forme 4.On the other hand, if the
On notera que dans une variante, il est possible de cambrer le
tube 2 en l'immobilisant sur la forme 3 par l'intermédiaire de
la contre-forme 4, qui dans ce cas peut ne pas être un galet
mais un moyen de blocage tel qu'un bloc presseur par exemple, et
en combinant d'une part une rotation de la tête de cambrage 1
selon ZB synchronisée à une rotation selon YB de la forme 3 en
l'ayant au préalable fait tourner selon YA pour ne pas enrouler
le tube 2 sur le pan coupé 30, et d'autre part un mouvement
proportionnel d'avance du tube 2 selon X.Note that in a variant, it is possible to bend the tube 2 by immobilizing it on the
Cette variante permet notamment de cambrer un tube à proximité de son extrémité, ou à proximité d'un cambrage ou d'un refoulement.This variant makes it possible to arch a tube nearby end, or near a camber or discharge.
En référence maintenant à la figure 2d, on peut voir que, après
le cambrage du tube 2, ce dernier est déplacé axialement, la
contre-forme 4 a été ramenée dans sa position de départ par une
rotation dans le sens ZA, la forme 3 a tourné dans le sens YB
pour ramener le pan coupé 30 parallèlement au tube 2, et la tête
de cambrage 1 a été déplacée dans le sens RA afin que le pan
coupé 30 vienne au contact du tube 2 et que celui-ci sorte de la
gorge 41, en sorte que le tube 2 puisse, après coupage, être
dégagé latéralement.Referring now to Figure 2d, it can be seen that, after the bending of the tube 2, the latter is moved axially, the
Claims (7)
- Machine for bending a tube in series and at a high rhythm, including a bending head (1) comprising a mould (3) and a counter-mould (4) which comprise at the periphery a groove (31, 41) with a semicircular cross-section, as well as means allowing to cause said counter-mould (4) to rotate co-axially to said mould (3), so as to drive the tube to be bent (2) and to wind it up onto said mould (3), characterised in that said mould (3) consists of a disc having a cut-off comer (30) arranged according to a chord of said disc, and in that it includes means allowing to move said bending head (1) with respect to the axis of the tube (2), according to a path (R) passing through the axes (34, 40) of said mould (3) and counter-mould (4), as well as means allowing to cause said mould (3) to rotate axially, independently from the displacement of said counter-mould (4).
- Machine according to claim 1, characterised in that the means allowing to move said bending head (1) with respect to the tube (2) drive the latter according to a rectilinear path.
- Machine according to claim 1, characterised in that the means allowing to move said bending head (1) with respect to the tube (2) drive the latter according to a curved path (R).
- Machine according to any of the preceding claims, characterised in that the counter-mould (4) consists of a roller.
- Machine according to any of the preceding claims, characterised in that the counter-mould consists of a pressing block.
- Machine according to any of the preceding claims, characterised in that the means allowing to move said bending head (1) with respect to the tube (2) and the means allowing to cause the mould (3) to rotate axially consist of numerically controlled stepping motors.
- Machine according to any of claims 1, 3, 4 and 5, characterised in that the bending head (1) is carried by a pivotal arm on which it is pivotally movable co-axially to the mould (3), the latter being pivotally and axially mounted on said bending head (1).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0003706A FR2806647B1 (en) | 2000-03-23 | 2000-03-23 | TUBE BENDING MACHINE |
FR0003706 | 2000-03-23 | ||
PCT/FR2001/000873 WO2001070425A1 (en) | 2000-03-23 | 2001-03-22 | Tube bending machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1311356A1 EP1311356A1 (en) | 2003-05-21 |
EP1311356B1 true EP1311356B1 (en) | 2005-06-01 |
Family
ID=8848419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01919545A Expired - Lifetime EP1311356B1 (en) | 2000-03-23 | 2001-03-22 | Tube bending machine |
Country Status (9)
Country | Link |
---|---|
US (1) | US6782728B2 (en) |
EP (1) | EP1311356B1 (en) |
AT (1) | ATE296692T1 (en) |
AU (1) | AU4662401A (en) |
BR (1) | BR0109486A (en) |
DE (1) | DE60111237T2 (en) |
ES (1) | ES2243472T3 (en) |
FR (1) | FR2806647B1 (en) |
WO (1) | WO2001070425A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102756024A (en) * | 2012-07-27 | 2012-10-31 | 曹澍生 | Multifunctional bending device |
CN109482771A (en) * | 2018-12-19 | 2019-03-19 | 昆明理工大学 | A kind of bending machine |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102825112A (en) * | 2012-08-08 | 2012-12-19 | 常州亚邦捷宇自控成套设备有限公司 | Bidirectional bending device |
CZ27381U1 (en) * | 2014-08-06 | 2014-09-29 | Msv Systems Cz S.R.O. | Bending head, especially for automatic bending machine |
CN104550355A (en) * | 2014-11-27 | 2015-04-29 | 芜湖福马汽车零部件有限公司 | Long steel pipe bending machine |
JP6363560B2 (en) * | 2015-06-12 | 2018-07-25 | 三桜工業株式会社 | Pipe bending method and bending apparatus |
CN105414270B (en) * | 2015-11-27 | 2017-12-26 | 河南新科起重机股份有限公司 | A kind of pipeline automatic bending device |
CN112372318B (en) * | 2020-11-05 | 2021-10-15 | 湖南翰坤实业有限公司 | Bending forming device for rectangular frame |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1298666A (en) * | 1969-01-13 | 1972-12-06 | Michael William Lusty | Pipe bender |
US3788116A (en) * | 1971-09-08 | 1974-01-29 | Torrington Co | Tailpipe forming mechanism |
IT1201974B (en) * | 1985-07-22 | 1989-02-02 | Giuliano Gallico | METHOD AND MACHINE FOR THE REALIZATION OF SPATIAL SHAPES |
EP0231321A1 (en) * | 1985-08-05 | 1987-08-12 | GARDNER, Robert Frederick | Pipe bending machine |
US4843858A (en) * | 1987-07-16 | 1989-07-04 | Crawford Fitting Company | Tube bending apparatus |
US4765168A (en) * | 1987-07-27 | 1988-08-23 | Tools For Bending, Inc. | Method and apparatus for bending tubing |
GB2247202B (en) * | 1990-07-26 | 1995-01-25 | Usui Kokusai Sangyo Kk | Method and apparatus for bending a small diameter metal tube |
US6038903A (en) * | 1998-03-09 | 2000-03-21 | Eaton Leonard, Inc. | Dual headed bending machine |
JP3721781B2 (en) * | 1998-05-15 | 2005-11-30 | 日立工機株式会社 | Electric bending tool |
-
2000
- 2000-03-23 FR FR0003706A patent/FR2806647B1/en not_active Expired - Fee Related
-
2001
- 2001-03-22 DE DE60111237T patent/DE60111237T2/en not_active Expired - Fee Related
- 2001-03-22 US US10/239,260 patent/US6782728B2/en not_active Expired - Fee Related
- 2001-03-22 AU AU46624/01A patent/AU4662401A/en not_active Abandoned
- 2001-03-22 EP EP01919545A patent/EP1311356B1/en not_active Expired - Lifetime
- 2001-03-22 AT AT01919545T patent/ATE296692T1/en not_active IP Right Cessation
- 2001-03-22 ES ES01919545T patent/ES2243472T3/en not_active Expired - Lifetime
- 2001-03-22 WO PCT/FR2001/000873 patent/WO2001070425A1/en active IP Right Grant
- 2001-03-22 BR BR0109486-6A patent/BR0109486A/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102756024A (en) * | 2012-07-27 | 2012-10-31 | 曹澍生 | Multifunctional bending device |
CN109482771A (en) * | 2018-12-19 | 2019-03-19 | 昆明理工大学 | A kind of bending machine |
Also Published As
Publication number | Publication date |
---|---|
ATE296692T1 (en) | 2005-06-15 |
DE60111237D1 (en) | 2005-07-07 |
ES2243472T3 (en) | 2005-12-01 |
AU4662401A (en) | 2001-10-03 |
US20030037585A1 (en) | 2003-02-27 |
US6782728B2 (en) | 2004-08-31 |
FR2806647B1 (en) | 2004-06-11 |
DE60111237T2 (en) | 2006-03-16 |
BR0109486A (en) | 2003-06-10 |
EP1311356A1 (en) | 2003-05-21 |
FR2806647A1 (en) | 2001-09-28 |
WO2001070425A1 (en) | 2001-09-27 |
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