EP2699366B1 - Machine de cintrage destinée à cintrer des barres métalliques, telles que des pièces rondes de renfort ou similaires - Google Patents
Machine de cintrage destinée à cintrer des barres métalliques, telles que des pièces rondes de renfort ou similaires Download PDFInfo
- Publication number
- EP2699366B1 EP2699366B1 EP12722503.5A EP12722503A EP2699366B1 EP 2699366 B1 EP2699366 B1 EP 2699366B1 EP 12722503 A EP12722503 A EP 12722503A EP 2699366 B1 EP2699366 B1 EP 2699366B1
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- EP
- European Patent Office
- Prior art keywords
- bar
- bending
- segment
- movement device
- work plane
- Prior art date
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- 238000005452 bending Methods 0.000 title claims description 137
- 239000002184 metal Substances 0.000 title claims description 12
- 230000002787 reinforcement Effects 0.000 title claims description 8
- 230000002452 interceptive effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 230000002123 temporal effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/022—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 concerns a machine for bending metal bars, such as for example round pieces for reinforcement, structural shapes, tubes or other profiles with any section shape.
- the machine according to the present invention allows to bend both ends of the metal bar, with bending angles of 180° or more, and can be used both to bend a single bar at a time and two or more overlapping bars and shaped at the same time.
- a machine for bending metal bars comprising a first movement device to move the bars, or lead drawing device, a bending device and a second movement device to move the bars, or tail drawing device, disposed downstream of the bending device and suitable to move the bar forward/backward once this is not being gripped by the first movement device.
- a shearing to size device is interposed between the first movement device and the bending device to shear the bar to size.
- the first movement device feeds the bars toward the bending device along a direction of feed and on a determinate feed plane.
- the bending device normally comprises a bending mandrel, with a substantial disc shape and provided, in proximity to its axis of rotation, with a contrast element of a substantially cylindrical shape and around which the bar is bent.
- the mandrel also comprises, in proximity to its periphery, a bending pin, also substantially cylindrical, which, when the mandrel rotates in one direction or the other, bends the bar around the contrast pin.
- the devices disposed in proximity to the bending device have been provided with protection elements conformed as an inclined plane which, when the bar is bent, divert it to prevent it from jamming against them.
- the rolls of the second movement device are kept gripping on the bar and the bending is carried out.
- the bent segment interferes with the second movement device which keeps the bar gripping, and in particular at least with one of the pairs of rolls disposed on the side where the bending is carried out, not allowing the execution of substantially U-shaped bends, or the execution of shaped profiles which are adequately coplanar.
- Document WO 2005/061144 A1 describes a bending device for metal bars having a first drawing unit upstream of the bending device and a second drawing unit downstream of the bending device, wherein contrast grippers are interposed between each drawing unit and the bending device. Both the drawing units and the contrast grippers can assume a first operating position above the work plane and a second retractable position of non-interference below the work plane.
- WO'144 does not provide that only a part of the contrast grippers, or only a part of the movement device, can move from one or the other of the positions so as to allow the execution of the bends even at 180° and guaranteeing that the bar being worked is supported.
- One purpose of the present invention is to achieve a machine for bending bars which allows to obtain a final product shaped substantially flat whatever its shape or size, starting from bars subjected to bending.
- Another purpose of the present invention is to achieve a bending machine which is simple to make and limited in size.
- the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
- a machine for bending metal bars such as round pieces for reinforcement or suchlike, comprises a first movement device and a second movement device suitable to move, along a work plane, at least one bar toward a bending device interposed between the first and the second movement device.
- the bending device comprises a rotating mandrel, provided peripherally with a bending pin and centrally with a contrast member around which a first segment of the bar is suitable to be bent on each occasion so as to obtain the shaped profile having the final desired shape.
- the second movement device can be selectively positioned in a first condition, protruding with respect to the work plane, in which it is suitable to move the bar toward the bending device and to hold at least momentarily a second segment of the bar during bending, and in a second condition in which it is disposed completely under the work plane and not interfering with the movements of the bar.
- the machine also comprises at least a mobile pin disposed downstream of the bending device and suitable to selectively assume at least a retracted non-operating position under the work plane and not interfering with the movements of the bar, and an operating position protruding with respect to the work plane in which it is suitable to support and contrast the movement of the second segment of the bar, that is, the one not being bent, when the second movement device is in the second condition, that is, completely retracted under the work plane, and when the first segment of the bar, that is, the one being bent, is bent or at least its bending is completed.
- the second protruding operating position of the pin is in fact temporally and functionally coordinated to the second retracted condition under the work plane of the second movement device.
- the mobile pin which is selectively activated located on the opposite side to that of the first segment of the bar which is being bent, allows the second movement device to disappear below the work plane, thus rendering it non-interfering with the execution and/or the completion of the bending of the bar; this allows to execute bends with bending angles having values of about 180°, that is, substantially U-shaped bars and with substantially coplanar bending sides.
- the mobile pin prevents the bar from moving or rotating around the contrast member, altering the position, along the longitudinal extension, in which the bar is bent.
- the mobile pin is disposed between the bending device and the second movement device, advantageously in a position near that of the bending device, in order to reduce the effects of localized deformation due to the action of contrast which is achieved by the bending pin during bending.
- actuation means are associated to the mobile pin and are suitable to selectively move it into the operating and non-operating condition on the command of a central control unit.
- the mobile pin is associated to the second movement device, and its movement occurs independently from the movement of the second movement device with respect to the work plane of the machine.
- clamping means interposed, which can be selectively positioned between an operating position and a position in which they are retracted under the plane. In the operating condition they are suitable to constrain the sliding of the bar along its longitudinal extension, and therefore allow bends to be made in positions which are very precise along the extension of the bar.
- the action to contrast and support the second segment of the bar, during the completion of bends of up to 180° is carried out by one or more elements of the second movement device which, during use, are disposed on the side where the bending is carried out.
- the action to contrast and support the second segment of the bar can be carried out, or also carried out, by parts of the clamping means.
- the second movement device, and/or the clamping means if present each comprise at least a first and a second element, opposite each other with respect to the axis of feed of the bar and between which the bar is made to advance, and the second segment of the bar is possibly held during bending.
- the first element or elements are selectively movable, transverse to the work plane of the bars, in order to move them under the work plane and in a position of non-interference with the first segment of the bar which is bent, while the second element or elements remain external or protruding from the work plane in order to support and contrast the movement of the second segment of the bar.
- first and second element we also mean units composed of two or more elements opposite each other with respect to the axis of feed of the bar.
- the first element comprises at least a first roll and the second element comprises at least a second roll, which are associated respectively with a first and a second frame.
- the first and the second frame are associated to respective first and second actuation means which allow the autonomous and reciprocally independent movement thereof with respect to the work plane.
- the present invention also concerns a method for bending metal bars, such as round pieces for reinforcement or suchlike.
- the method comprises a step of feeding a bar along a work plane and toward a bending device by means of a first movement device or a second movement device, disposed respectively one upstream and the other downstream of the bending device, and a step of bending the bar carried out by the bending device.
- a mobile pin disposed downstream of the bending device, is moved from its non-operating position, retracted under the work plane, into an operating position, protruding with respect to the work plane, to support and contrast the movement of the second segment of the bar in order to complete the bending of the first segment of the bar, and the second movement device is taken under the work plane and in a position of non-interference with the movements/bending of the bar.
- the action to support and contrast the bar is carried out by an element of the second movement device and/or possibly by the clamping means, instead of, or together with the mobile pin, when the first segment of the bar begins to interfere with the second movement device, the first element/elements located on the bending side is/are moved transverse to the work plane of the bars and with respect to the second element/elements, in order to take them into a position of non-interference with the first segment of the bar which is being bent, while the second element/elements supports/support and contrasts/contrast the movement of the second segment of the bar during the bending, or the completion of the bending, of the first segment of the bar.
- a machine for bending metal bars B is denoted in its entirety by the reference number 10 and comprises a first movement device 11, or lead drawing device, to draw a bar B toward a bending device 12, a second movement device 13, or tail drawing device, substantially aligned with the first, and disposed downstream with respect to the bending device 12, and a shears 15 to shear to size the bar B fed by the first movement device 11 which is disposed downstream with respect to the latter.
- the first movement device 11 ( fig. 1 ), of a substantially known type, comprises motorized rolls 16 which receive the bar B from feed means, not shown in the drawings, which in turn pick up the bars, either from a bundle of bars or directly from a coil.
- the first movement device 11 is suitable to make the bar B advance along a direction of feed D toward the bending device 12, and on a work plane P ( fig. 2 ) for working the bars B.
- the shears 15 ( fig. 1 ) is suitable to shear the bar B to a desired predetermined length and is disposed substantially on a plane coinciding with the work plane P of the bars B.
- the bending device 12 ( figs. 1 and 2 ) comprises a rotating mandrel 20 conformed substantially as a disk and provided on its periphery, solid therewith, a bending pin 21, substantially cylindrical in shape, which extends orthogonal with respect to the rotating mandrel 20.
- the bending device 12 also comprises a contrast pin 22, solidly associated with the rotating mandrel 20, in proximity to its center of rotation and around which the bar B is bent.
- Motor members 23 are also associated with the rotating mandrel 20, in a known manner, and are suitable to rotate the latter around its axis, and first translation means 25, in this case an actuator suitable to translate the rotating mandrel 20 along its axis of rotation and with respect to the work plane P of the bar B, to take the bending device 12 to a first, second and third position, in which the latter is disposed respectively on the same plane, on a lower plane, or on an upper plane with respect to the work plane P of the bars B.
- first translation means 25 in this case an actuator suitable to translate the rotating mandrel 20 along its axis of rotation and with respect to the work plane P of the bar B, to take the bending device 12 to a first, second and third position, in which the latter is disposed respectively on the same plane, on a lower plane, or on an upper plane with respect to the work plane P of the bars B.
- the rotating mandrel 20 is associated with a support plane 41 which is selectively movable by means of a linear actuator 42 which is suitable to move the rotating mandrel 20 to position the contrast pin 22 substantially tangent to the bar B that is fed.
- a linear actuator 42 which is suitable to move the rotating mandrel 20 to position the contrast pin 22 substantially tangent to the bar B that is fed.
- the contrast pin 22 is positioned under the bar B to execute bending, of both the leading and tail end, downward.
- fig. 7 by positioning the contrast pin 22 above the bar B, it is possible to execute bending, of both the leading and tail end, upward.
- the second movement device 13 in this case comprises a pair of motorized rolls 27, and a pair of contrast rolls 29 selectively translatable toward the pair of motorized rolls 27 by means of actuators 30 which act substantially in a transverse direction with respect to the direction of feed D.
- Both the motorized rolls 27 and the contrast rolls 29 are mounted on respective supports associated with a protective and supporting casing 39.
- the pair of motorized rolls 27 is selectively rotatable, in a known manner, by means of motor means 31 to make the bar B advance or retreat from or toward the bending device 12.
- the second movement device 13 is selectively translatable orthogonal to the work plane P by means of second translation means 32, to take respectively the rolls 27 and 29 completely under the work plane P, or to a position where the second device 13 does not interfere with the bar B which is being bent, as shown in fig. 2 , or into a position substantially aligned with that of the work plane P of the bar B and where the rolls 27 and 29 are suitable to draw the bar from or toward the bending device 12, or into another, super-elevated position suitable to make the bar B available to the bending device 12 when the latter is in its third position, that is, super-elevated with respect to the work plane P.
- an element to support and contrast the bar B is associated with the second movement device 13; in this case, the element is a support pin 33 which is selectively moved by an actuator 35 to take it selectively to a protruding position with respect to the work plane P of the bar B, or to a retracted position where it does not interfere with the movements of the bar B.
- the protruding position with respect to the work plane of the bar B is also obtained if the second movement device 13 is completely under the work plane P of the bar B.
- the function of the support pin 33, during the bending of the bar B, is to support and contrast the bar B.
- the support pin 33 and the corresponding actuator 35 are attached to a fixed part 40 of the machine, that is, a plane substantially coinciding with the work plane P of the bar B.
- This solution allows to dispose the support pin 33 in a position very close to the bending device 12, allowing to obtain bent bars even with very limited end extensions. Furthermore, disposing the support pin 33 in a position very close to the bending device 12 reduces the bulging effect of the bar that occurs between the contrast pin 22 and support pin 33 during the bending action.
- the support pin 33 is disposed laterally to the direction of feed D of the bar B and in such a manner that it is also peripherally aligned with the motorized rolls 27.
- clamping means 37 are disposed, in a known manner, which during the bending of the bar B are selectively activated to keep the bar B clamped and to prevent it from sliding, which would modify the position of the bend.
- the work plane P of the bar B that is, the work plane of the machine 10, is advantageously inclined to allow the bar, once it is bent and no longer supported, to be conveyed to a zone where the bent articles are discharged.
- the machine 10 functions as follows.
- the bar B is fed forward by the first feed device 11 toward the bending device 12 for a length equal to the overall extension of the bent bar to be obtained.
- both the bending device 12 and the second movement device 13 are disposed completely under the work plane of the bar B, so as to be disposed in a position that does not interfere with the advancing bar.
- the bar B is sheared to size by the shears 15 ( fig. 4 ) and both the bending device 12 and the second movement device 13 are raised by means of the respective first 25 and second translation means 32, to be disposed on a plane coinciding with the work plane P ( fig. 5 ).
- both the bending device 12 and the second movement device 13 are further translated vertically to be taken, in coordination, to a super-elevated position with respect to the work plane P of the bars B. In this condition, it is possible to bend even very long bars B, preventing problems of interference with the first movement device 11 or with the bending device 12.
- the second movement device 13 again translates the bar B toward the first movement device 11, but still raised with respect to the latter, for a length substantially equal to the position where the bend is to be obtained.
- the clamping means 37 are activated, which clamp the bar B in such position and allow it to be subsequently bent by rotation of the rotating mandrel 20.
- the bending pin 21 going into contact with the bar B, forces the latter to wind around the contrast pin 22 to obtain the desired bending.
- the rotating mandrel 20 is rotated to a position where a first segment of the bar B is in a position near to, or nearly interfering with, the second movement device 13, that is, with the casing 39 that supports the contrast rolls 29.
- the support pin 33 In this position, the support pin 33 is taken to a protruding position with respect to the plane on which the rolls 27 and 29 lie, the clamping means 37, which had been gripping a second segment of the bar B, release their grip on the latter, the actuators 30 distance the contrast rolls 29 from the motorized rolls 27, and the second translation means 32 translate the second movement device 13 to a retracted position under the work plane P.
- the second segment of the bar B therefore remains constrained in three points of contact, that is, with the contrast pin 22, the bending pin 21, and laterally to the bend, with the support pin 33.
- the rotating mandrel 20 is driven, rotating it further to bend the first segment of the bar B substantially by an angle of 180° around the contrast pin 22, without any constraints connected to interference with the contrast rolls 29 of the second movement device 13.
- the support pin 33 contrasts the bending action exerted by the bending pin 21, and allows the correct execution of the bend.
- both the bending device 12 and the support pin 33 are lowered, leaving the bar B free on the work plane of the machine, which, being slightly inclined, discharges the latter toward a collection zone of the bent articles.
- the function of support and contrast during the bending of the bar B may be carried out by the motorized rolls 27, by selective translation of the group of contrast rolls 29 only, which are taken to a condition of non-interference.
- the motorized rolls 27 are mounted on a first frame 51, provided with a first guide 52 disposed vertically and facing toward the contrast rolls 29.
- a second frame 53 is slidingly disposed, provided with a second guide 55, disposed horizontal and along which a support element 56 of the contrast rolls 29 is made to slide, in order to take them closer to/away from the motorized rolls 27.
- the second frame 53 is displaced vertically along the first guide 52 by means of a first actuator 57, whereas the horizontal translation of the support element 56 along the second guide 55 is achieved by a second actuator 58.
- Both the first frame 51 and the second frame 53 are moved in a group vertically by means of the second translation means 32.
- the motorized rolls 27 remain protruding with respect to the work plane of the machine, to define a contrast with the bending action itself.
- the function of supporting and contrasting the bar B during the bending step is carried out by the clamping means 37, which in this particular case are made as a separate element with respect to the second movement device 13.
- the clamping means 37 comprise a first gripping part 65 and a second contrasting part 66 which, in normal use, acts as an abutment element of the bar B when the first part 65 is moved against the second part and thus clamps the translation of the bar B during the bending steps.
- the second part 66 is provided with a first guide 69 disposed vertically and facing toward the first part 65 on which a support frame 70 of the first part 65 is slidingly associated.
- the support frame 70 is provided with a second guide 71, disposed horizontal, along which the first part 65 is made to slide in order to take it closer to/away from the second part 66.
- the support frame 70 is displaced vertically along the first guide 69 by means of a first actuator 72, whereas the horizontal translation of the first part 65 along the second guide 71 is achieved by a second actuator 73.
- Both the first part 66 and the frame 70 are moved in a group vertically by means of translation means 75.
- both the first part 65 and the second part 66 are disposed substantially facing, coplanar with respect to each other, and protruding from the work plane P, in order to constrain the movement of the bar B during the bending steps.
- the second movement device 13 is taken under the work plane P and the second part 66 acts as a contrast to the second segment of bar to complete the bending of the first segment.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Claims (9)
- Machine destinée à cintrer des barres métalliques, telles que des pièces rondes de renfort ou similaires, comprenant un premier dispositif de déplacement (11) et un second dispositif de déplacement (13), les deux dispositifs étant aptes à déplacer le long d'une surface de travail (P) au moins une barre (B) en direction d'un dispositif de cintrage (12) intercalé entre lesdits premier (11) et second (13) dispositifs de déplacement, le dispositif de cintrage (12) comprenant un mandrin rotatif (20) pourvu à sa périphérie d'une goupille de cintrage (21) et au centre d'un élément de contraste (22) autour duquel un premier segment de ladite barre (B) peut être cintré, des moyens de serrage (37) étant éventuellement présents, conçus pour limiter le coulissement de ladite barre (B) le long de son étendue longitudinale pendant le cintrage, ledit second dispositif de déplacement (13) pouvant être sélectivement positionné dans un premier état, faisant saillie par rapport à la surface de travail (P), dans lequel il est apte au moins à déplacer ladite barre (B) en direction dudit dispositif de cintrage (12) et dans un second état dans lequel il est entièrement disposé au-dessous de la surface de travail (P) et ne gêne pas les mouvements de la barre (B), caractérisée en ce qu'elle comprend au moins une goupille mobile (33) disposée en aval dudit dispositif de cintrage (12) et apte à assumer au moins une position rétractée de non-fonctionnement au-dessous ladite surface de travail (P) et ne gênant pas les mouvements de la barre (B), et une position de fonctionnement faisant saillie par rapport à ladite surface de travail (P) dans laquelle elle est apte à soutenir et contraster le déplacement d'un second segment de la barre (B), ladite seconde position de fonctionnement en saillie de ladite goupille (33) étant coordonnée temporellement et fonctionnellement avec le second état rétracté au-dessous de la surface de travail (P) dudit second dispositif de déplacement (13), de manière que ledit second segment de la barre (B) soit soutenu par ladite goupille (33).
- Machine selon la revendication 1, caractérisée en ce que ladite goupille mobile (33) est située entre ledit dispositif de cintrage (12) et ledit second dispositif de déplacement (13).
- Machine selon la revendication 2, caractérisée en ce que des moyens actionneurs (35) sont associés à ladite goupille mobile (33) et sont aptes à la déplacer jusqu'à ladite position de fonctionnement et à ladite position de non-fonctionnement.
- Machine selon n'importe laquelle des revendications précédentes, caractérisée en ce que ladite goupille mobile (33) est associée audit second dispositif de déplacement (13).
- Machine destinée à cintrer des barres métalliques, telles que des pièces rondes de renfort ou similaires, comprenant un premier dispositif de déplacement (11) et un second dispositif de déplacement (13), les deux dispositifs étant aptes à déplacer le long d'une surface de travail (P) au moins une barre (B) en direction d'un dispositif de cintrage (12) intercalé entre lesdits premier (11) et second (13) dispositifs de déplacement, et comprenant un mandrin rotatif (20) pourvu à sa périphérie d'une goupille de cintrage (21) et au centre d'un élément de contraste (22) autour duquel un premier segment de ladite barre (B) peut être cintré, des moyens de serrage (37) étant éventuellement présents, conçus pour limiter le coulissement de ladite barre (B) le long de son étendue longitudinale pendant le cintrage, ledit second dispositif de déplacement (13) et/ou lesdits moyens de serrage (37) éventuellement présents pouvant être sélectivement positionnés dans un premier état, faisant saillie par rapport à la surface de travail (P), pour déplacer et/ou retenir un second segment de ladite barre (B) au moins temporairement pendant le cintrage, et dans un second état dans lequel ils en sont entièrement disposés au-dessous de ladite surface de travail (P) et ne gênent pas les mouvements de ladite barre (B), et dans laquelle ledit second dispositif de déplacement (13) et/ou lesdits moyens de serrage (37) éventuellement présents comprennent au moins un premier élément (29 ; 65) et un second élément (27 ; 66) opposés, entre lesquels ladite barre (B) est apte à avancer, et ledit second segment de la barre (B) peut éventuellement être retenu, caractérisée en ce que dans ledit premier état du second dispositif de déplacement (13) et/ou des moyens de serrage (37) lesdits premiers éléments (29 ; 65) peuvent assumer une position au-dessous de la surface de travail (P) des barres (B), de manière à parvenir à une position où il ne gênent pas le premier segment de la barre (B) pendant le cintrage de celle-ci, coordonnée temporellement et fonctionnellement avec le second état desdits seconds éléments (27 ; 66) faisant saillie par rapport à la surface de travail (P) de manière a soutenir et contraster le mouvement dudit second segment de la barre (B), pour que ledit second segment de la barre (B) soit soutenu par lesdits seconds éléments (27 ; 66).
- Machine selon la revendication 5, caractérisée en ce que ledit premier élément du second dispositif de déplacement (13) comprend au moins un premier rouleau (29) et ledit second élément du second dispositif de déplacement (13) comprend au moins un second rouleau (27), ledit premier rouleau (29) et ledit second rouleau (27) étant associés respectivement à un premier (53) et à un second (51) châssis associés respectivement, en état de fonctionnement, à de premiers moyens d'actionnement (57) et à de seconds moyens d'actionnement (32) aptes à déplacer ledit premier rouleau (29) et ledit second rouleau (27) d'une façon autonome et indépendante l'un de l'autre, par rapport à la surface de travail (P).
- Machine selon la revendication 5 ou 6, caractérisée en ce que ledit premier élément des moyens de serrage (37) comprend une partie de saisie (65) et ledit second élément des moyens de serrage (37) comprend une partie de contraste (66), des moyens de déplacement (72, 73) étant associés à ladite partie de saisie (65) et à ladite partie de contraste (66), et étant aptes à déplacer ladite partie de saisie (65) et ladite partie de contraste (66) d'une façon autonome et indépendante l'une de l'autre.
- Procédé de cintrage de barres métalliques, telles que des pièces rondes de renfort ou similaires, comportant une étape d'acheminement d'une barre (B) le long d'une surface de travail (P) et en direction d'un dispositif de cintrage (12) au moyen d'un premier dispositif de déplacement (11) ou d'un second dispositif de déplacement (13), situés respectivement l'un en amont et l'autre en aval du dispositif de cintrage (12), et une étape de cintrage de ladite barre (B), effectuée par ledit dispositif de cintrage (12), dans lequel ledit dispositif de cintrage (12) comprend un mandrin rotatif (20) pourvu à sa périphérie d'une goupille de cintrage (21) et d'un élément de contraste (22) autour duquel un premier segment de ladite barre (B) est cintré au moyen de ladite goupille de cintrage (21), et dans lequel, pendant ladite étape de cintrage, le second dispositif de déplacement (13) retient et contraint au moins temporairement la rotation d'un second segment de la barre (B), caractérisé en ce que dans ladite étape de cintrage, quand ledit premier segment de la barre (B) commence à gêner ledit second dispositif de déplacement (13), une goupille mobile (33), située en aval du dispositif de cintrage (12), est déplacée de sa position de non-fonctionnement, rétractée au-dessous de la surface de travail (P), à une positon de fonctionnement faisant saillie par rapport à la surface de travail (P), et soutient et contraste le mouvement du second segment de la barre (B) pour que le cintrage du premier segment de la barre (B) puisse s'achever, et en corrélation temporelle et fonctionnelle directe ledit second dispositif de déplacement (13) est déplacé au-dessus de la surface de travail (P) dans une position où il ne gêne pas les mouvements / le cintrage de la barre (B).
- Procédé de cintrage de barres métalliques, telles que des pièces rondes de renfort ou similaires, comprenant une étape d'acheminement d'une barre (B) le long d'une surface de travail (P) et en direction d'un dispositif de cintrage (12) au moyen d'un premier dispositif de déplacement (11) ou d'un second dispositif de déplacement (13), situés respectivement l'un en amont et l'autre en aval du dispositif de cintrage (12), et une étape de cintrage de ladite barre (B), effectuée par ledit dispositif de cintrage (12), dans lequel ledit dispositif de cintrage (12) comprend un mandrin rotatif (20) pourvu à sa périphérie d'une goupille de cintrage (21) et d'un élément de contraste (22) autour duquel un premier segment de ladite barre (B) est cintré au moyen de ladite goupille de cintrage (21), des moyens de serrage (37) étant éventuellement présents, conçus pour limiter le coulissement de ladite barre (B) le long de son étendue longitudinale pendant le cintrage, et dans lequel, pendant ladite étape de cintrage, le second dispositif de déplacement (13) retient et contraint au moins temporairement la rotation d'un second segment de la barre (B), et dans lequel ledit second dispositif de déplacement (13) et/ou lesdits moyens de serrage éventuellement présents comprennent au moins un premier élément (29 ; 65) et un second élément (27 ; 66) opposés, entre lesquels ladite barre (B) est apte à avancer, et ledit second segment de la barre (B) peut éventuellement être retenu, caractérisé en ce que quand ledit premier segment de la barre (B) commence à gêner ledit second dispositif de déplacement (13), le premier élément (29 ; 65) est translaté transversalement par rapport à la surface de travail (P) des barres (B) et par rapport au second élément (27 ; 66) de manière à parvenir à une position où il ne gêne pas le premier segment de la barre (B) pendant le cintrage de celle-ci, alors que le second élément (27 ; 66) reste en saillie par rapport à la surface de travail (P) pour soutenir et contraster le mouvement du second segment de la barre (B) pendant le cintrage ou pendant l'achèvement du cintrage du premier segment de la barre (B).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RS20160744A RS55106B1 (sr) | 2011-04-18 | 2012-04-17 | Mašina za savijanje metalnih šipki kao što su okrugli komadi za armaturu ili slično |
HRP20161106TT HRP20161106T1 (hr) | 2011-04-18 | 2016-08-30 | Stroj za savijanje za savijanje metalnih šipki, primjerice okruglih komada za ojačanja ili tome slično |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000061A ITUD20110061A1 (it) | 2011-04-18 | 2011-04-18 | Macchina piegatrice di barre metalliche, quali tondi per armatura o simili |
PCT/IB2012/000759 WO2012143776A1 (fr) | 2011-04-18 | 2012-04-17 | Machine de cintrage destinée à cintrer des barres métalliques, telles que des pièces rondes de renfort ou similaires |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2699366A1 EP2699366A1 (fr) | 2014-02-26 |
EP2699366B1 true EP2699366B1 (fr) | 2016-06-08 |
Family
ID=44477643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12722503.5A Active EP2699366B1 (fr) | 2011-04-18 | 2012-04-17 | Machine de cintrage destinée à cintrer des barres métalliques, telles que des pièces rondes de renfort ou similaires |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP2699366B1 (fr) |
CN (1) | CN103608133B (fr) |
DK (1) | DK2699366T3 (fr) |
ES (1) | ES2588367T3 (fr) |
HR (1) | HRP20161106T1 (fr) |
HU (1) | HUE030522T2 (fr) |
IT (1) | ITUD20110061A1 (fr) |
PL (1) | PL2699366T3 (fr) |
PT (1) | PT2699366T (fr) |
RS (1) | RS55106B1 (fr) |
WO (1) | WO2012143776A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT201700092356A1 (it) * | 2017-08-09 | 2019-02-09 | M E P Macch Elettroniche Piegatrici Spa | Macchina e procedimento per piegare elementi oblunghi, preferibilmente metallici, quali barre, vergelle, profilati, o simili |
IT202200010457A1 (it) * | 2022-05-19 | 2023-11-19 | Schnell Spa | Apparecchiatura per la lavorazione di elementi metallici di foggia allungata |
IT202200010811A1 (it) * | 2022-05-24 | 2023-11-24 | Schnell Spa | Apparecchiatura per la lavorazione di elementi metallici di foggia allungata |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUD20120210A1 (it) * | 2012-12-05 | 2014-06-06 | Fabro Giorgio Del | Macchina di piegatura per prodotti metallici e relativo procedimento di piegatura |
ITUD20130066A1 (it) * | 2013-05-20 | 2014-11-21 | Piegatrici Macch Elettr | Macchina per la piegatura di prodotti metallici e relativo procedimento di piegatura. |
ITUB20153259A1 (it) * | 2015-08-27 | 2017-02-27 | M E P Macch Elettroniche Piegatrici Spa | Macchina combinata per lavorare vergelle e relativo procedimento di lavorazione |
CN105414272A (zh) * | 2015-12-11 | 2016-03-23 | 重庆长安空港汽车配件有限责任公司 | 一种弯杆机 |
IT201700064059A1 (it) * | 2017-06-09 | 2018-12-09 | A L F A Costr Metalmeccaniche S R L | Macchina piegatrice |
CN108838683B (zh) * | 2018-07-18 | 2023-07-28 | 浙江中雁机械制造有限公司 | 全自动曲线折弯加工设备 |
IT201900001631A1 (it) * | 2019-02-05 | 2020-08-05 | A C M S R L Automatismi Costruzioni Mecc | Macchina di lavorazione di barre e relativo metodo di lavorazione |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1235176B (it) * | 1989-01-18 | 1992-06-23 | Piegatrici Macch Elettr | Cesoia mobile a monte gruppo piegatore e procedimento di piegatura in coda. |
IT1252984B (it) * | 1991-10-21 | 1995-07-10 | Piegatrici Macch Elettr | Macchina piegatrice sagomatrice a livelli operativi multipli |
ITUD20010197A1 (it) * | 2001-11-30 | 2003-05-30 | Piegatrici Macch Elettr | Macchina piegatrice per profilati, quali tondi di armatura o simili |
CN1465450A (zh) * | 2002-06-28 | 2004-01-07 | 明和网络株式会社 | 用于混凝土结构件盖板的钢筋弯曲成形方法以及其装置 |
ITUD20020226A1 (it) * | 2002-10-28 | 2004-04-29 | Piegatrici Macch Elettr | Macchina piegatrice per barre e relativo procedimento di piegatura |
DK176637B1 (da) * | 2003-12-24 | 2009-01-05 | Stema Engineering As | Fremgangsmåde ved bukning af stangmateriale samt værktöj til udövelse heraf |
ATE535323T1 (de) * | 2008-10-17 | 2011-12-15 | Wafios Ag | Stützbackenanordnung zum gleitenden seitlichen abstützen von stab- und rohrförmigen werkstücken an biegemaschinen |
-
2011
- 2011-04-18 IT IT000061A patent/ITUD20110061A1/it unknown
-
2012
- 2012-04-17 WO PCT/IB2012/000759 patent/WO2012143776A1/fr active Application Filing
- 2012-04-17 HU HUE12722503A patent/HUE030522T2/en unknown
- 2012-04-17 PT PT127225035T patent/PT2699366T/pt unknown
- 2012-04-17 CN CN201280030001.XA patent/CN103608133B/zh active Active
- 2012-04-17 ES ES12722503.5T patent/ES2588367T3/es active Active
- 2012-04-17 EP EP12722503.5A patent/EP2699366B1/fr active Active
- 2012-04-17 DK DK12722503.5T patent/DK2699366T3/en active
- 2012-04-17 RS RS20160744A patent/RS55106B1/sr unknown
- 2012-04-17 PL PL12722503.5T patent/PL2699366T3/pl unknown
-
2016
- 2016-08-30 HR HRP20161106TT patent/HRP20161106T1/hr unknown
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT201700092356A1 (it) * | 2017-08-09 | 2019-02-09 | M E P Macch Elettroniche Piegatrici Spa | Macchina e procedimento per piegare elementi oblunghi, preferibilmente metallici, quali barre, vergelle, profilati, o simili |
WO2019030789A1 (fr) * | 2017-08-09 | 2019-02-14 | M.E.P. Macchine Elettroniche Piegatrici S.P.A. | Machine et procédé pour plier des éléments oblongs, de préférence métalliques, tels que des barres, des tiges, des aciers profilés ou similaires |
RU2766591C2 (ru) * | 2017-08-09 | 2022-03-15 | М.Э.П. Маккине Элеттрониче Пьеатричи С.П.А. | Станок и способ гибки удлиненных металлических изделий таких, как прутки, стержни, профильные прутки или прочие подобные изделия |
TWI763901B (zh) * | 2017-08-09 | 2022-05-11 | 義大利商Mep義大利美普機械製造有限公司 | 用於彎折較佳為金屬製的例如條材、桿材、型材等長圓形構件的機器及方法 |
US11407017B2 (en) * | 2017-08-09 | 2022-08-09 | M.E.P. Macchine Elettroniche Piegatrici S.P.A. | Machine and method for bending oblong elements, preferably metal, such as bars, rod, section bars or suchlike |
AU2018315775B2 (en) * | 2017-08-09 | 2024-02-01 | M.E.P. Macchine Elettroniche Piegatrici S.P.A. | Machine and method for bending oblong elements, preferably metal, such as bars, rod, section bars or suchlike |
IT202200010457A1 (it) * | 2022-05-19 | 2023-11-19 | Schnell Spa | Apparecchiatura per la lavorazione di elementi metallici di foggia allungata |
WO2023223368A1 (fr) * | 2022-05-19 | 2023-11-23 | Schnell S.P.A. | Appareil et procédé pour usiner des éléments métalliques allongés |
IT202200010811A1 (it) * | 2022-05-24 | 2023-11-24 | Schnell Spa | Apparecchiatura per la lavorazione di elementi metallici di foggia allungata |
WO2023228223A1 (fr) * | 2022-05-24 | 2023-11-30 | Schnell S.P.A. | Appareil et procédé pour l'usinage d'éléments métalliques allongés |
Also Published As
Publication number | Publication date |
---|---|
HUE030522T2 (en) | 2017-05-29 |
PL2699366T3 (pl) | 2016-12-30 |
EP2699366A1 (fr) | 2014-02-26 |
WO2012143776A1 (fr) | 2012-10-26 |
RS55106B1 (sr) | 2016-12-30 |
CN103608133A (zh) | 2014-02-26 |
PT2699366T (pt) | 2016-09-07 |
ES2588367T3 (es) | 2016-11-02 |
HRP20161106T1 (hr) | 2016-11-04 |
DK2699366T3 (en) | 2016-09-19 |
CN103608133B (zh) | 2015-10-07 |
ITUD20110061A1 (it) | 2012-10-19 |
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