FR2899138A3 - Machine for bending pipe and bar sections having a longitudinal axis and a constant transverse section along the axis, comprises first, second and third cylinders accomplishing a rotation around axles having two opposite ends, and a frame - Google Patents

Machine for bending pipe and bar sections having a longitudinal axis and a constant transverse section along the axis, comprises first, second and third cylinders accomplishing a rotation around axles having two opposite ends, and a frame Download PDF

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Publication number
FR2899138A3
FR2899138A3 FR0602691A FR0602691A FR2899138A3 FR 2899138 A3 FR2899138 A3 FR 2899138A3 FR 0602691 A FR0602691 A FR 0602691A FR 0602691 A FR0602691 A FR 0602691A FR 2899138 A3 FR2899138 A3 FR 2899138A3
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frame
cylinders
machine according
machine
cylinder
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FR0602691A
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FR2899138B3 (en
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Mauro Riccardo Meliga
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Tauring SpA
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Tauring SpA
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/08Bending rods, profiles, or tubes by passing between rollers or through a curved die

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

Abstract

The machine for bending pipe and bar sections having a longitudinal axis (3) and a constant transverse section along the axis, comprises first, second and third cylinders (5, 6, 7) accomplishing a rotation around first, second and third axles (8, 9, 10) supported at a level of their opposite ends, a frame (4) and two elements are movable with respect to the frame. The cylinders are movable with respect to each other. The first axle is fixed to the frame. The second axle is mounted to the elements to change the distance between the two cylinders and the first cylinder. The machine for bending pipe and bar sections having a longitudinal axis (3) and a constant transverse section along the axis, comprises first, second and third cylinders (5, 6, 7) accomplishing a rotation around first, second and third axles (8, 9, 10) supported at a level of their opposite ends, a frame (4) and two elements are movable with respect to the frame. The cylinders are movable with respect to each other. The first axle is fixed to the frame. The second axle is mounted to the elements to change the distance between the two cylinders and the first cylinder. The third axle is mounted on the other element to vary the distance between the third and the first cylinder. The elements are defined by two respective slides (14, 15). The slides are placed in two respective perpendicular directions sliding with respect to the frame and axles, and moved by an actuator. First, second and third supports are intended to support an end of the first, second and third axles. The axles are fixed on two bearing ends. The first, second and third supports comprise a base (22) fixed to the frame and at the slides, and an annular distal end fixed on bearings. The base and the distal end are located along a displacement axis that forms an acute angle. The first cylinder is located in a zone of the frame defined by the acute angle. The base and the projection of the distal end of the first support are located along the bisection that divides the acute angle.

Description

MACHINE DE CINTRAGE DE SECTIONSECTION BENDING MACHINE

Le présent modèle d'utilité concerne une machine de cintrage de section destinée, en particulier, à cintrer 5 des tuyaux, des barres et analogues. Les sections sont normalement cintrées sur une machine de cintrage ayant une tête de cintrage comprenant trois cylindres effectuant une rotation autour d'axes parallèles respectifs agencés sous la forme d'un 10 triangle. L'un des cylindres est mobile par rapport aux deux autres et vers eux pour cintrer un tuyau reposant sur les deux autres cylindres. Un autre type de machine de cintrage comporte une tête de cintrage comprenant trois cylindres effectuant 15 une rotation autour d'axes respectifs agencés sous la forme d'un triangle. Un cylindre est fixé au bâti, et les deux autres sont mobiles, dans des directions perpendiculaires par rapport aux axes des cylindres, vers le cylindre fixe pour former un trajet incurvé pour une 20 section positionnée entre les cylindres mobiles et le cylindre fixe. On déplace les cylindres mobiles en mettant en rotation deux leviers supportant les cylindres mobiles et articulés autour d'un axe commun parallèle aux axes des 25 cylindres. Au fur et à mesure que la taille des sections à cintrer augmente, la taille des machines de cintrage augmente de même, pour garantir la rigidité nécessaire afin de cintrer des sections ayant des sections 30 transversales importantes, et dans le même temps, atteindre un haut degré de précision de cintrage. Pour cette raison, les machines de cintrage voient leur taille et leur coût augmenter considérablement en même temps qu'une augmentation de la taille des sections. 35 Un objet du présent modèle d'utilité consiste à mettre à disposition une machine de cintrage de section  The present utility model relates to a section bending machine for, in particular, bending pipes, rods and the like. The sections are normally bent on a bending machine having a bending head comprising three cylinders rotating about respective parallel axes arranged in the form of a triangle. One of the cylinders is movable relative to the other two and to them to bend a pipe resting on the other two cylinders. Another type of bending machine comprises a bending head comprising three cylinders rotating about respective axes arranged in the form of a triangle. One cylinder is attached to the frame, and the other two are movable, in directions perpendicular to the axes of the rolls, to the fixed roll to form a curved path for a section positioned between the moving rolls and the fixed roll. Moving cylinders are displaced by rotating two levers supporting the movable cylinders and articulated about a common axis parallel to the axes of the cylinders. As the size of the bending sections increases, so does the size of the bending machines, to provide the rigidity necessary to bend sections with large cross-sections, and at the same time to reach a high degree of bending accuracy. For this reason, bending machines are increasing in size and cost as well as increasing the size of the sections. An object of this utility model is to provide a section bending machine

conçue pour atténuer les inconvénients de l'art antérieur. Selon le présent modèle d'utilité, on met à disposition une machine de cintrage destinée à cintrer des sections, en particulier des tuyaux, des barres et analogues ayant un axe longitudinal et une section transversale constante le long de l'axe longitudinal ; la machine comprenant un premier, un deuxième, et un troisième cylindres effectuant une rotation respectivement autour d'un premier, deuxième, et troisième arbres parallèles les uns par rapport aux autres et ayant chacun deux extrémités opposées ; au moins un desdits premier, deuxième et troisième cylindres étant mobile par rapport aux autres cylindres ; et ladite machine étant caractérisée en ce que les premier, deuxième et troisième arbres sont chacun supportés au niveau de deux extrémités opposées. Dans un mode de réalisation particulier de la machine, les deuxième et troisième cylindres sont montés sur des coulisseaux respectifs, qui coulissent par rapport audit bâti dans deux directions respectives perpendiculaires par rapport auxdits premier, deuxième et troisième arbres et le long des axes de déplacement respectifs.  designed to mitigate the disadvantages of the prior art. According to the present utility model, a bending machine is provided for bending sections, in particular pipes, rods and the like having a longitudinal axis and a constant cross-section along the longitudinal axis; the machine comprising first, second, and third cylinders rotating respectively about a first, second, and third shaft parallel to each other and each having two opposite ends; at least one of said first, second and third cylinders being movable relative to the other cylinders; and said machine being characterized in that the first, second and third shafts are each supported at two opposite ends. In a particular embodiment of the machine, the second and third cylinders are mounted on respective sliders, which slide relative to said frame in two respective directions perpendicular to said first, second and third shafts and along the respective axes of movement. .

Dans ce mode de réalisation particulier, les premier, deuxième et troisième arbres peuvent être chacun facilement supportés au niveau des deux extrémités. Un mode de réalisation non limitatif du présent modèle d'utilité sera décrit à titre d'exemple en se référant aux dessins annexés, dans lesquels : la figure 1 représente une vue en perspective avec des parties retirées dans un but de clarté, d'une machine de cintrage conformément au présent modèle d'utilité ; la figure 2 représente une vue partiellement en coupe d'un détail de la figure 1 ;  In this particular embodiment, the first, second and third shafts can each be easily supported at both ends. A non-limiting embodiment of the present utility model will be described by way of example with reference to the accompanying drawings, in which: FIG. 1 shows a perspective view with portions removed for clarity, bending machine according to this utility model; Figure 2 shows a partially sectional view of a detail of Figure 1;

la figure 3 représente une vue de face, avec des parties retirées dans un but de clarté, de la machine de cintrage de la figure 1. Le numéro de référence 1 sur la figure 1 indique dans son ensemble une machine destinée à travailler des sections 2 ayant un axe longitudinal 3 et une section transversale constante perpendiculaire par rapport à l'axe 3 (figure 3). La machine 1 comprend un bâti 4 ; et une tête de cintrage ayant trois cylindres 5, 6, 7 montés sur des arbres 8, 9, 10 et effectuant une rotation autour d'axes respectifs 11, 12, 13 parallèles les uns par rapport aux autres et dans une direction Dl. La tête de cintrage comprend deux coulisseaux 14 et 15, qui sont mobiles par rapport au bâti 4 dans des directions respectives D2 et D3 le long des axes de détachement respectifs A2 et A3 qui convergent afin de former un angle aigu, et sont commandés par des actionneurs hydrauliques respectifs 16 et 17. En se référant à la figure 3, l'arbre 8 est fixé au bâti 4 dans la zone définie par l'angle aigu formé par les axes de déplacement A2 et A3, et les arbres 9 et 10 sont montés sur des coulisseaux 14 et 15 respectifs. La distance entre le cylindre 5 et le cylindre 6, d'un côté, et la distance entre le cylindre 7 et le cylindre 5, de l'autre côté, varient en fonction du déplacement des coulisseaux 14, 15. En se référant à la figure 2, chaque arbre 8, 9, 10 est supporté par deux paliers (à roulement ou à glissement) 18 situés au niveau des extrémités opposées du cylindre 5, 6, 7 respectif. De manière plus précise, l'arbre 8 est supporté par un palier 18 directement monté sur le bâti 4, et par un palier 18 monté sur un support 19 raccordé de manière rigide au bâti 4. De manière similaire, chaque arbre 9, 10 est supporté par un palier 18 monté directement sur un coulisseau 14, 15 respectif, et par un palier opposé 18 monté sur un support respectif 20, 21 raccordé de manière rigide à un coulisseau 14, 15 respectif. Les supports 19, 20, 21 ont chacun respectivement une base 22 fixée au bâti 4 et des coulisseaux 14 et 15 ; et une extrémité distale annulaire 23 fixée à un palier 18 respectif.  FIG. 3 is a front view, with portions removed for clarity, of the bending machine of FIG. 1. Reference numeral 1 in FIG. 1 generally indicates a machine for working sections 2. having a longitudinal axis 3 and a constant cross section perpendicular to the axis 3 (Figure 3). The machine 1 comprises a frame 4; and a bending head having three cylinders 5, 6, 7 mounted on shafts 8, 9, 10 and rotating about respective axes 11, 12, 13 parallel to one another and in a direction D1. The bending head comprises two sliders 14 and 15, which are movable relative to the frame 4 in respective directions D2 and D3 along the respective detachment axes A2 and A3 which converge to form an acute angle, and are controlled by respective hydraulic actuators 16 and 17. Referring to Figure 3, the shaft 8 is fixed to the frame 4 in the area defined by the acute angle formed by the axes of displacement A2 and A3, and the shafts 9 and 10 are mounted on slides 14 and 15 respectively. The distance between the cylinder 5 and the cylinder 6, on one side, and the distance between the cylinder 7 and the cylinder 5, on the other side, vary according to the displacement of the slides 14, 15. Referring to the 2, each shaft 8, 9, 10 is supported by two bearings (rolling or sliding) 18 located at the opposite ends of the cylinder 5, 6, 7 respectively. More specifically, the shaft 8 is supported by a bearing 18 directly mounted on the frame 4, and by a bearing 18 mounted on a support 19 rigidly connected to the frame 4. Similarly, each shaft 9, 10 is supported by a bearing 18 mounted directly on a respective slide 14, 15, and by an opposite bearing 18 mounted on a respective support 20, 21 rigidly connected to a respective slide 14, 15. The supports 19, 20, 21 each respectively have a base 22 fixed to the frame 4 and sliders 14 and 15; and an annular distal end 23 attached to a respective bearing 18.

La base 22 et la saillie de l'extrémité distale 23 du support 19 sont sensiblement situées le long de la bissectrice B qui divise l'angle aigu formé par les axes de déplacement A2 et A3 ; et les bases respectives 22 et les saillies respectives des extrémités distales 23 des supports 20 et 21 sont sensiblement situées le long des axes respectifs A2 et A3. En d'autres termes, chaque arbre 8, 9, 10 est supporté par deux paliers 18 raccordés de manière rigide les uns aux autres au moyen d'un support respectif 19, 20, 21.  The base 22 and the projection of the distal end 23 of the support 19 are substantially located along the bisector B which divides the acute angle formed by the axes of displacement A2 and A3; and the respective bases 22 and the respective projections of the distal ends 23 of the supports 20 and 21 are substantially located along the respective axes A2 and A3. In other words, each shaft 8, 9, 10 is supported by two bearings 18 rigidly connected to each other by means of a respective support 19, 20, 21.

En utilisation réelle, et en se référant à la figure 3, la section 2 est amenée dans une direction D4, perpendiculaire à la direction Dl, au moyen d'un dispositif connu non représenté. Les cylindres 6 et 7 sont situés sur un côté de la section 2, et le cylindre 5 est situé sur le côté opposé. Au fur et à mesure que la section 2 est avancée, les coulisseaux 14 et 15 sont déplacés vers le cylindre 5 pour définir un trajet incurvé pour la section 2. Les supports 19, 20, 21 définissent chacun un second appui pour les arbres 8, 9, 10 respectifs, de sorte que les arbres 8, 9, 10 sont supportés au niveau des deux extrémités. Du fait des supports 19, 20, 21, la machine 1 est capable de cintrer des sections 2 de grande taille au moyen d'arbres 8, 9, 10 relativement petits.  In actual use, and with reference to Figure 3, the section 2 is fed in a direction D4, perpendicular to the direction Dl, by means of a known device not shown. Cylinders 6 and 7 are located on one side of section 2, and cylinder 5 is located on the opposite side. As the section 2 is advanced, the sliders 14 and 15 are moved to the cylinder 5 to define a curved path for the section 2. The supports 19, 20, 21 each define a second support for the shafts 8, 9, 10, so that the shafts 8, 9, 10 are supported at both ends. Because of the supports 19, 20, 21, the machine 1 is capable of bending large sections 2 by means of relatively small shafts 8, 9, 10.

De plus, les coulisseaux 14 et 15 permettent un positionnement aisé des supports 20 et 21 le long des axes de déplacement A2 et A3, si bien que la machine de cintrage 1 offre dans son ensemble des performances supérieures en termes de précision de cintrage et de  In addition, the slides 14 and 15 allow easy positioning of the supports 20 and 21 along the axes of movement A2 and A3, so that the bending machine 1 as a whole offers superior performance in terms of bending accuracy and accuracy.

puissance, tandis que les coûts et la taille sont minimisés dans le même temps. Bien entendu l'invention n'est pas limitée aux exemples de réalisation ci-dessus décrits et représentés, à partir desquels on pourra prévoir d'autres modes et d'autres formes de réalisation sans pour autant sortir du cadre de l'invention.  power, while costs and size are minimized at the same time. Naturally, the invention is not limited to the embodiments described above and shown, from which we can provide other modes and other embodiments without departing from the scope of the invention.

Claims (11)

REVENDICATIONS 1. Machine de cintrage destinée à cintrer des sections (2), en particulier des tuyaux, des barres et analogues, ayant un axe longitudinal (3) et une section transversale constante le long de l'axe longitudinal (3) ; la machine comprenant un premier, un deuxième, et un troisième cylindres (5, 6, 7) effectuant une rotation respectivement autour d'un premier, deuxième et troisième arbres (8, 9, 10) parallèles les uns par rapport aux autres et ayant chacun deux extrémités opposées ; au moins un parmi lesdits premier, deuxième et troisième cylindres (5, 6, 7) étant mobile par rapport aux autres cylindres (5, 6, 7) ; et ladite machine étant caractérisée en ce que les premier, deuxième et troisième arbres (8, 9, 10) sont chacun supportés au niveau de leurs deux extrémités opposées.  A bending machine for bending sections (2), in particular pipes, bars and the like, having a longitudinal axis (3) and a constant cross section along the longitudinal axis (3); the machine comprising first, second and third cylinders (5, 6, 7) rotating respectively about first, second and third shafts (8, 9, 10) parallel to one another and having each two opposite ends; at least one of said first, second and third cylinders (5, 6, 7) being movable relative to the other cylinders (5, 6, 7); and said machine being characterized in that the first, second and third shafts (8, 9, 10) are each supported at their two opposite ends. 2. Machine selon la revendication 1, caractérisée en ce qu'elle comprend un bâti (4), et deux éléments mobiles qui sont mobiles par rapport audit bâti (4) ; le premier arbre (8) étant fixé audit bâti (4), et le deuxième arbre (9) étant monté sur un parmi lesdits éléments mobiles pour faire varier la distance entre le deuxième cylindre (6) et le premier cylindre (5) ; et le troisième arbre (10) étant monté sur l'autre élément mobile pour faire varier la distance entre le troisième cylindre (7) et le premier cylindre (5).  2. Machine according to claim 1, characterized in that it comprises a frame (4), and two movable elements which are movable relative to said frame (4); the first shaft (8) being fixed to said frame (4), and the second shaft (9) being mounted on one of said movable elements to vary the distance between the second cylinder (6) and the first cylinder (5); and the third shaft (10) being mounted on the other movable member to vary the distance between the third cylinder (7) and the first cylinder (5). 3. Machine selon la revendication 2, caractérisée en ce que lesdits éléments mobiles sont définis par deux coulisseaux respectifs (14, 15) lesquels coulisseaux coulissent par rapport audit bâti (4) dans deux directions respectives (D2, D3) perpendiculaires par rapport auxdits premier, deuxième et troisième arbres (8, 9, 10) et le long des axes de déplacement respect=ifs (A2 ; A3).35  3. Machine according to claim 2, characterized in that said movable elements are defined by two respective sliders (14, 15) which sliders slide relative to said frame (4) in two respective directions (D2, D3) perpendicular to said first , second and third shafts (8, 9, 10) and along the displacement axes respect = ifs (A2; A3) .35 4. Machine selon la revendication 3, caractérisée en ce que chaque coulisseau {14, 15) est actionné par un actionneur respectif (16, 17)  4. Machine according to claim 3, characterized in that each slider (14, 15) is actuated by a respective actuator (16, 17). 5. Machine selon la revendication 3 ou 4, caractérisée en ce qu'elle comprend un premier, un deuxième, et un troisième supports (19, 20, 21) qui supportent respectivement une extrémité des premier, deuxième et troisième arbres (8, 9, 10).  5. Machine according to claim 3 or 4, characterized in that it comprises a first, a second, and a third support (19, 20, 21) which respectively support one end of the first, second and third shafts (8, 9 , 10). 6. Machine selon la revendication 5, caractérisée en ce que les premier, deuxième et troisième arbres (8, 9, 10) sont fixés chacun sur les extrémités au moyen de deux paliers (18).  6. Machine according to claim 5, characterized in that the first, second and third shafts (8, 9, 10) are each fixed on the ends by means of two bearings (18). 7. Machine selon la revendication 6, caractérisé en ce que le premier support (19) comporte une base (22) fixée audit bâti (4) ; et une extrémité distale annulaire (23) fixée sur un palier (18).  7. Machine according to claim 6, characterized in that the first support (19) comprises a base (22) fixed to said frame (4); and an annular distal end (23) attached to a bearing (18). 8. Machine selon la revendication 7, caractérisée en ce que le deuxième et troisième supports (20, 21) ont chacun une base respective (22) fixée à un coulisseau respectif (14, 15) ; et une extrémité distale annulaire respective (23) destinée à supporter un palier respectif (18).  8. Machine according to claim 7, characterized in that the second and third supports (20, 21) each have a respective base (22) attached to a respective slider (14, 15); and a respective annular distal end (23) for supporting a respective bearing (18). 9. Machine selon la revendication 8, caractérisée en ce que le deuxième et troisième supports (20, 21) sont chacun positionnés si bien que la base respective (22) et la saillie de l'extrémité distale correspondante (23) se trouvent le long de l'axe de déplacement respectif (A2 ; A3).  9. Machine according to claim 8, characterized in that the second and third supports (20, 21) are each positioned so that the respective base (22) and the projection of the corresponding distal end (23) are along of the respective displacement axis (A2; A3). 10. Machine selon la revendication 9, caractérisée en ce que lesdits axes de déplacement (A2 ; A3) forment un angle aigu ; :ledit premier cylindre (5) étant situé dans une zone du bâti (4) définie par ledit angle aigu.a  10. Machine according to claim 9, characterized in that said axes of displacement (A2; A3) form an acute angle; said first cylinder (5) being located in an area of the frame (4) defined by said acute angle. 11.. Machine selon la revendication 10, caractérisée en ce que la base (22) et la saillie de l'extrémité distale (23) dudit premier support (19) sont sensiblement situées le long de la bissectrice (B) qui divise ledit angle aigu.  Machine according to claim 10, characterized in that the base (22) and the projection of the distal end (23) of said first support (19) are substantially located along the bisector (B) which divides said angle acute.
FR0602691A 2006-03-28 2006-03-28 SECTION BENDING MACHINE Expired - Lifetime FR2899138B3 (en)

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Application Number Priority Date Filing Date Title
FR0602691A FR2899138B3 (en) 2006-03-28 2006-03-28 SECTION BENDING MACHINE

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Application Number Priority Date Filing Date Title
FR0602691A FR2899138B3 (en) 2006-03-28 2006-03-28 SECTION BENDING MACHINE

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FR2899138A3 true FR2899138A3 (en) 2007-10-05
FR2899138B3 FR2899138B3 (en) 2008-03-14

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102950179A (en) * 2012-12-03 2013-03-06 中煤第六十八工程有限公司 Steel tube bending machine
CN103817271A (en) * 2014-03-19 2014-05-28 中国化学工程第十一建设有限公司 Building material bending device
CN109909339A (en) * 2019-04-15 2019-06-21 河北华环化工设备制造有限公司 A kind of hyperbolicity profile bender

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103586312B (en) * 2013-11-08 2016-06-22 中建三局第三建设工程有限责任公司 A kind of bend pipe facility of scalable bending radius

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102950179A (en) * 2012-12-03 2013-03-06 中煤第六十八工程有限公司 Steel tube bending machine
CN103817271A (en) * 2014-03-19 2014-05-28 中国化学工程第十一建设有限公司 Building material bending device
CN103817271B (en) * 2014-03-19 2015-08-12 中国化学工程第十一建设有限公司 A kind of building materials bending device
CN109909339A (en) * 2019-04-15 2019-06-21 河北华环化工设备制造有限公司 A kind of hyperbolicity profile bender

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