EP0850707A1 - Biegeverfahren für Doppelbiegevorrichtung und dazugehörige Doppelbiegevorrichtung mit bewegbaren drehenden Teilen - Google Patents

Biegeverfahren für Doppelbiegevorrichtung und dazugehörige Doppelbiegevorrichtung mit bewegbaren drehenden Teilen Download PDF

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Publication number
EP0850707A1
EP0850707A1 EP97116477A EP97116477A EP0850707A1 EP 0850707 A1 EP0850707 A1 EP 0850707A1 EP 97116477 A EP97116477 A EP 97116477A EP 97116477 A EP97116477 A EP 97116477A EP 0850707 A1 EP0850707 A1 EP 0850707A1
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EP
European Patent Office
Prior art keywords
bending
winged
shaping machine
bend
round piece
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.)
Granted
Application number
EP97116477A
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English (en)
French (fr)
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EP0850707B1 (de
Inventor
Marcello Del Fabro
Giorgio Del Fabro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MEP Macchine Elettroniche Piegatrici SpA
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MEP Macchine Elettroniche Piegatrici SpA
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Publication of EP0850707B1 publication Critical patent/EP0850707B1/de
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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

Definitions

  • This invention concerns a bending method for a double shaping machine, and the relative double shaping machine with movable winged elements as set forth in the respective main claims.
  • the invention is used preferably, but not only, to shape large dimension round pieces used for reinforcement purposes in the building trade, but can in any case be used to bend pipes, bars or other sections in general, of whatever section.
  • round piece shall be taken to include any section whatsoever which may be used to make bars and/or brackets for reinforcement purposes.
  • round piece shall also be taken to include bundles of round pieces placed one on top of the other and shaped at the same time.
  • the state of the art covers shaping machines used to make bars and/or brackets for reinforced concrete in the building trade. These machines are normally structured to include a double shaping station, each one including its own bending assembly, so as to allow two bending operations to be carried out at the same time.
  • At least one of the bending stations is movable on guides, which allows the station to be brought nearer to or distanced from the other according to the distance between the subsequent bending operations.
  • the gripper element may be movable with respect to the bending stations and its function is to guide and retain the round piece which is to be shaped, and also to contrast the bending action.
  • the bending assemblies of this type of shaping machine substantially consist of a rotary disk with a central contrasting pin and a peripheral bending pin.
  • the round piece which is to be bent is inserted between the two pins of each bending assembly and then it is shaped by the disk rotating in a desired direction and at a desired angle according to the geometry of the piece required.
  • the central contrasting pin has been replaced by a contrasting element associated with the rotary disk and comprising a hollow which contains the round piece as it passes through; this element is elongated lengthwise and is known as a winged element.
  • the winged element functions as a contrasting element so that the round piece is laterally contained for an extended portion and is therefore less subject to deformation on the horizontal plane in the zone of the winged element and during the bending step.
  • Another problem which has been found in shaping machines known to the state of the art concerns the displacement of the bending pin from one side to the other with respect to the piece to be shaped, so as to make it possible to perform left- and right-hand bends to 90° and more on the same bar or on the same bundle of bars.
  • Some embodiments have proposed a bending pin of the retractable type, including a working position where it emerges completely from the rotary disk, and a second transfer position where it is lowered below the disk and is taken from one side to the other of the piece to be shaped in relation to the bend to be made.
  • Another proposed embodiment includes two bending pins arranged separated at a distance on the same rotary disk, one for right-hand bends and the other for left-hand bends, but with this solution it is not possible to achieve bends of more than about 45°.
  • Yet another solution includes grippers outside the relative bending station which are activated in order to temporally lift the round piece and allow the bending pin to pass from one side to the other, by means of rotating the rotary disk.
  • this solution causes problems because of the excessive distance between the axis of the bending station and the elements which lift the round piece.
  • Yet another solution teaches to use a bending disk bearing a central contrasting pin associated with a peripheral bending pin and another disk, outside the first, bearing another pair of contrasting pins.
  • This solution is complex and does not solve the problem of allowing the bending pin to pass efficiently and simply from one side of the bundle to the other.
  • DE'880 substantially teaches to include command means so as to automatically define the position of the fixing assembly with respect to the two bending stations in such a way that the fixing assembly is always located at the centre of the two bending stations during the bending step.
  • DE'880 only provides an expulsion device to extract the bars from the bending heads; the expulsion device intervenes at the end of the bending operations.
  • a further disadvantage of shaping machines known to the state of the art is that there is a large accumulation of scale and dirt in the channels through which the round pieces have to pass and also on the working plane. This is caused by the type of material which is being worked, which normally consists of bars taken from the warehouse or store rooms exposed to environmental factors.
  • This dirt accumulates particularly in the contrasting elements of the longitudinal guide type, and can in the long term begin to interfere with the bending operations and create considerable operational problems which have an effect on the quality of the final product.
  • the purpose of the invention is to provide a shaping machine with contrasting elements of the longitudinal guide type, or wings, which will allow the bending pin to move from one side to the other of the round piece to be shaped, using a system which is structurally simple, rapid and functional, regardless of the diameter of the round piece to be shaped and/or the type of bending to be performed.
  • a further purpose of the invention is to obtain this movement with a system which will improve and accelerate the production cycle of the machine, and make it more versatile without needing substantial changes to be made in the functional parts thereof.
  • Another purpose of the invention is to allow the dirt and scale which has accumulated in the hollow through which the round piece passes to be automatically discharged from the contrasting winged elements.
  • the shaping machine according to the invention is substantially of the conventional type and includes two movable bending stations, each of which is equipped with a bending assembly with a rotary bending disk on which a winged contrasting element and a peripheral bending pin are mounted.
  • the machine In an intermediate position between the two bending stations, the machine includes a gripper element, which is also movable with respect to the two bending stations, to retain and guide the round piece to be shaped.
  • each winged element is associated with at least an actuator which allows it to be raised with respect to the rotary disk, whenever it is necessary to displace the bending pin from one side to the other of the round piece to be shaped so as to perform consecutive bends to the left and right of up to 90° and more.
  • This movement of the winged element is activated in the intermediate steps between one bending cycle and the next and causes the round piece, or bundle of round pieces, enclosed therein to be lifted by a height at least mating with that of the bending pin.
  • the lifting of the winged element, and therefore of the round piece enclosed therein, makes it possible to rotate the disk on which the bending pin is mounted and therefore to make the pin pass under the round piece so as to allow it to be correctly positioned on the other side from that where the previous bend took place.
  • the actuator is repositioned to take the winged element back to its seating, which is associated with the rotary disk, so as to perform a new bending operation on the round piece: this bend is made in the opposite direction to the previous one.
  • the winged element is raised on a plane substantially perpendicular to the working plane and therefore to the rotary disk, with the winged element being maintained substantially parallel to that plane.
  • the winged element is raised with a rotation movement, which causes it to be inclined towards the outer part of the bending station; in this embodiment the winged element is constrained by hinge means to the structure of the machine at its rear edge.
  • the gripper element placed between the two bending stations is associated with an actuator which allows the gripper element, and therefore the round pieces held therein, to be raised or lowered as necessary in a coordinated manner with the movements of the winged elements.
  • the gripper element is movable gives further support to the round piece as it is being raised and therefore prevents deformations and flections thereof.
  • the shaping machine considerably reduces the working times of the production cycle, whatever the geometry of the bending operation or the diameter of the round pieces.
  • the bending pin can rotate through the widest angle of rotation in such a way that it passes below the winged element and thus is taken to the correct position with respect to the round pieces.
  • the shaping machine 10 for round pieces 16 for reinforced concrete includes two bending stations 10a, 10b arranged in a line and movable on rails 11 so as to move closer to/further from each other according to the working cycle.
  • Each bending station 10a, 10b comprises a bending assembly 12 consisting of a rotary disk 13 on the periphery of which there is a bending pin 14 solidly associated.
  • a winged contrasting element 15 equipped with a longitudinal hollow through which the round piece 16 passes lying on a parallel plane to the rotary disk 13.
  • a gripper element 17 suitable to retain and guide the round pieces 16 during the bending step.
  • the gripper element 17 may also be movable with respect to the bending stations 10a and 10b so as to maintain a desired reciprocal position with respect thereto, during the bending cycle.
  • each winged element 15 is associated with at least a relative actuator 18.
  • the actuator 18 allows the winged element 15 to be raised with respect to the working plane defined by the rotary disk 13, at least to a point where the lower edge 15a of the winged element 15, or the round piece 16 placed lower down, is at a greater height than the top 14a of the bending pin 14.
  • the raising of the winged element 15 makes it possible, by rotating the rotary disk 13 in either one direction 24 or the other (Fig. 1), for the bending pin 14 to pass from one side of the round pieces 16 to the other, so as to bend the round piece 16 in the opposite direction to the previous bending operation.
  • the actuator 18 is activated, the rotary disk 13 is rotated until the bending pin 14 is taken to the opposite side of the round piece 16, then the actuator 18 carries the winged element 15 back to its working position, the round piece 16 is made to advance lengthwise as far as the position of the new bend, and then the new bend is achieved with an opposite direction to that of the previous bend.
  • the stationary element 18a of the actuator 18 is solidly associated with the housing structure 19 of the relative bending station 10a, 10b, in a retracted position inside the said structure, while the movable element 18b of the actuator 18 is solid at the lower part with the winged element 15 in an outer area where it cannot come into contact with the rotary disk 13.
  • the winged element 15 is raised on a plane substantially perpendicular to the plane on which the round pieces 16 lie, the winged element being maintained substantially parallel to this plane.
  • the winged element 15 is guided by a pin 20 cooperating with a mating central hole 23 made in the housing structure 19 and communicating with the central hole on the rotary disk 13.
  • the winged element 15 is rotated as it is raised and is therefore inclined downwards on the side of the relative bending station 10a or 10b placed in front of the complementary bending station 10b or 10a.
  • This embodiment involves no direct intervention on the housing structure 19 of the bending station 10a, 10b, it occupies no inner spaces inside the housing structure 19, and moreover, it is possible, with this embodiment, to discharge outwards any scale or other dirt which has accumulated in the guide channel of the winged element 15, preventing this dirt from going onto the working surface of the housing structure 19 and/or penetrating inside the hole 23.
  • the actuator 18 is placed outside the housing structure 19 and has one of its ends constrained to the said structure; in this case, the actuator 18 is attached in an oscillating manner to the housing structure 19 on a bracket element 21.
  • the other end of the actuator 18 is pinned to the rear end 15b of the winged element 15 in an area which does not come into contact with the round pieces 16.
  • the winged element 15 is connected to the housing structure 19 in proximity with its lower rear end 15c by means of a hinge constraint 25, and can oscillate on a vertical plane substantially corresponding with the plane on which the round pieces 16 lie.
  • the winged element 15 is raised or inclined by the action of the movable element 18b of the actuator 18.
  • the lower end of the pin 20 is advantageously reamed so as not to come into contact with the walls of the hole 23 as the winged element 15 is raised and rotated.
  • the gripper element 17 is associated with its own actuator 22 which allows it to be raised or lowered in conjunction with the movement of the winged elements 15.
  • the gripper element 17 when one or both winged elements 15 are raised, the gripper element 17 is also raised, which gives support to the round pieces 16 in the event that there is a great distance between the stations 10a, 10b and such as to lead to unwanted flections and deformations of the round pieces 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Wire Processing (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP97116477A 1996-10-01 1997-09-22 Biegeverfahren für Doppelbiegevorrichtung und dazugehörige Doppelbiegevorrichtung mit bewegbaren drehenden Teilen Expired - Lifetime EP0850707B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD960185 1996-10-01
IT96UD000185A IT1288994B1 (it) 1996-10-01 1996-10-01 Macchina sagomatrice doppia con zappe mobili

Publications (2)

Publication Number Publication Date
EP0850707A1 true EP0850707A1 (de) 1998-07-01
EP0850707B1 EP0850707B1 (de) 2001-02-28

Family

ID=11422198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116477A Expired - Lifetime EP0850707B1 (de) 1996-10-01 1997-09-22 Biegeverfahren für Doppelbiegevorrichtung und dazugehörige Doppelbiegevorrichtung mit bewegbaren drehenden Teilen

Country Status (10)

Country Link
EP (1) EP0850707B1 (de)
JP (1) JPH10113723A (de)
AT (1) ATE199334T1 (de)
BR (1) BR9702934A (de)
DE (1) DE69704152T2 (de)
DK (1) DK0850707T3 (de)
ES (1) ES2156623T3 (de)
GR (1) GR3035498T3 (de)
IT (1) IT1288994B1 (de)
PT (1) PT850707E (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806943A1 (fr) * 2000-04-03 2001-10-05 Macsoft Machine de cintrage de barres a nez de pliage effacable
US7124486B2 (en) 2000-10-31 2006-10-24 Macsoft. S.A. Fast and automated tool-changing device with standard conical tool support for digitally controlled bending machine
CN103084515A (zh) * 2013-02-27 2013-05-08 江阴市志翔电子科技有限公司 一种热熔断体两端铜线的折弯机
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
CN108637131A (zh) * 2018-08-04 2018-10-12 长葛市宇发建筑机械有限公司 一种定弯曲销固定式钢筋弯曲机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106475490B (zh) * 2015-08-28 2018-10-19 元壤实业（上海）有限公司 一种用于笔记本天线弯曲成型的治具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218147A1 (de) * 1973-02-16 1974-09-13 Fabro Marcello Del
EP0015354A1 (de) * 1979-02-28 1980-09-17 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Biegemaschine
EP0079587A1 (de) * 1981-11-18 1983-05-25 Oemb SA Drahtbiegemaschine
EP0379029A1 (de) * 1989-01-18 1990-07-25 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Abschwenkbare Biegeeinrichtung
EP0491195A1 (de) * 1990-12-17 1992-06-24 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Biege-Formeinrichtung von Stangen und Verfahren zum Einbringen von Biegungen der hinteren Enden von Stangen
DE9406880U1 (de) * 1993-05-07 1994-07-07 Progress Ag Biegeanlage für Stäbe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218147A1 (de) * 1973-02-16 1974-09-13 Fabro Marcello Del
EP0015354A1 (de) * 1979-02-28 1980-09-17 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Biegemaschine
EP0079587A1 (de) * 1981-11-18 1983-05-25 Oemb SA Drahtbiegemaschine
EP0379029A1 (de) * 1989-01-18 1990-07-25 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Abschwenkbare Biegeeinrichtung
EP0491195A1 (de) * 1990-12-17 1992-06-24 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Biege-Formeinrichtung von Stangen und Verfahren zum Einbringen von Biegungen der hinteren Enden von Stangen
DE9406880U1 (de) * 1993-05-07 1994-07-07 Progress Ag Biegeanlage für Stäbe

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806943A1 (fr) * 2000-04-03 2001-10-05 Macsoft Machine de cintrage de barres a nez de pliage effacable
WO2001074509A1 (fr) * 2000-04-03 2001-10-11 MACSOFT (Société Anonyme) Machine de cintrage de barres a nez de pliage effaçable
US6813922B2 (en) 2000-04-03 2004-11-09 Numalliance Bending machine for rods with resettable folding shank
US7124486B2 (en) 2000-10-31 2006-10-24 Macsoft. S.A. Fast and automated tool-changing device with standard conical tool support for digitally controlled bending machine
CN103084515A (zh) * 2013-02-27 2013-05-08 江阴市志翔电子科技有限公司 一种热熔断体两端铜线的折弯机
CN103084515B (zh) * 2013-02-27 2014-09-24 江阴市志翔电子科技有限公司 一种热熔断体两端铜线的折弯机
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
WO2017033145A1 (en) * 2015-08-27 2017-03-02 M.E.P. Macchine Elettroniche Piegatrici S.P.A. Combined machine for working wire rod and corresponding working method
CN108348972A (zh) * 2015-08-27 2018-07-31 Mep意大利美普机械制造有限公司 用于加工线材棒的组合机器及其相应加工方法
CN108348972B (zh) * 2015-08-27 2019-11-08 Mep意大利美普机械制造有限公司 用于加工线材棒的组合机器及其相应加工方法
US11229938B2 (en) 2015-08-27 2022-01-25 M.E.P. Macchine Eletrroniche Piegatrici, S.p.A. Combined machine for working wire rod and corresponding working method
CN108637131A (zh) * 2018-08-04 2018-10-12 长葛市宇发建筑机械有限公司 一种定弯曲销固定式钢筋弯曲机

Also Published As

Publication number Publication date
GR3035498T3 (en) 2001-06-29
BR9702934A (pt) 1999-06-15
PT850707E (pt) 2001-06-29
EP0850707B1 (de) 2001-02-28
ITUD960185A1 (it) 1998-04-01
ITUD960185A0 (it) 1996-10-01
JPH10113723A (ja) 1998-05-06
DK0850707T3 (da) 2001-03-26
DE69704152D1 (de) 2001-04-05
ATE199334T1 (de) 2001-03-15
DE69704152T2 (de) 2001-06-21
IT1288994B1 (it) 1998-09-25
ES2156623T3 (es) 2001-07-01

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