EP2307154A1 - Dispositif à cintrer pour une machine à cintrer pour éléments métalliques oblongs, et procédé de cintrage associé - Google Patents

Dispositif à cintrer pour une machine à cintrer pour éléments métalliques oblongs, et procédé de cintrage associé

Info

Publication number
EP2307154A1
EP2307154A1 EP09742063A EP09742063A EP2307154A1 EP 2307154 A1 EP2307154 A1 EP 2307154A1 EP 09742063 A EP09742063 A EP 09742063A EP 09742063 A EP09742063 A EP 09742063A EP 2307154 A1 EP2307154 A1 EP 2307154A1
Authority
EP
European Patent Office
Prior art keywords
bending
contrast
metal elements
units
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09742063A
Other languages
German (de)
English (en)
Inventor
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
Original Assignee
MEP Macchine Elettroniche Piegatrici SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MEP Macchine Elettroniche Piegatrici SpA filed Critical MEP Macchine Elettroniche Piegatrici SpA
Publication of EP2307154A1 publication Critical patent/EP2307154A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • 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
    • B21D7/12—Bending rods, profiles, or tubes with programme control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire

Definitions

  • the present invention concerns a bending device for a bending machine for oblong metal elements, such as for example bars, whether from a roll or pre- sheared, in order to obtain shaped pieces such as reinforcement stirrups or other.
  • the bending device according to the present invention comprises a plurality of bending units selectively positionable in cooperation with the oblong metal elements to be bent and each comprising its own bending element and its own contrast pin, the latter having different sizes from the contrast pins of the other bending units.
  • Bending machines are known, for oblong metal elements to be shaped, such as for example bars from rolls or pre-sheared.
  • Known bending machines comprise at least a bending unit essentially consisting of at least a bending support or mandrel, generally disk-shaped, rotating around an axis, normally central, defining a bending plane and provided centrally with a contrast pin. On one spoke of the mandrel a bending element is provided, substantially co-planar with the contrast pin.
  • the bending element is able to rotate both in a clockwise direction and also anticlockwise around the contrast pin, so that the oblong metal element is shaped by plastic deformation around the contrast pin in one direction or the other.
  • abutment element for the bend for example defined by the shears, or by a conveyor provided upstream of the bending unit, or by a specific, selectively openable holding and contrast unit, such as a gripper or other.
  • This known solution is not only particularly difficult and dangerous for operators but also requires, every time, a long time for equipping and consequent down times of the machine. Moreover, this solution needs a mandrel of great size, so as to allow the positioning of a large number of different contrast pins, also with relative large sizes.
  • the distance between the positioning axis of the contrast pins and the abutment element for the bend is chosen according to the sizes of the larger pin.
  • this solution entails that, when the smaller contrast pin is mounted, the distance between the axis of the pin and the abutment element for the bend remains unchanged, defining in this case a large segment of the oblong metal element that is not controlled.
  • 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 bending device is applied for bending oblong metal elements such as bars, whether from a roll or pre-sheared, in order to obtain shaped pieces such as for example reinforcement stirrups or other.
  • the bending device comprises a plurality of bending units, each provided with contrast means, a bending support defining a bending plane on which the oblong metal elements are able to be positioned, and bending means mounted mobile around the relative contrast means, so as to bend the oblong metal elements in cooperation with the contrast means.
  • each bending unit comprises its own contrast means having different shape and sizes with respect to the contrast means of the other bending units, and is mounted on a movement support, to be selectively positioned in correspondence with a determinate operating position of bending.
  • each bending unit with its own contrast means can be selectively replaced by another, by means of the movement support, and therefore without requiring the intervention of external lifters, such as cranes, gantries or suchlike.
  • the operations to replace the bending unit are performed substantially automatically and do not necessarily require the intervention of specialized labor.
  • each bending unit is not constrained by the sizes of the larger means, and so formations of loops and errors in the interaxis between the bends can be reduced - A -
  • the movement support is conformed substantially as a carousel, so as to move in rotation the bending units toward the relative operating bending position.
  • the movement support comprises at least a rotatable plate on which the bending units are mounted.
  • the bending units are disposed angularly offset with respect to each other on the rotatable plate.
  • the movement of the bending mean around the relative contrast means in order to perform the bending of the metal elements is independent with respect to the rotation of the plate of the movement support.
  • each bending unit is selectively positionable between a first bending position, substantially co-planar and/or raised with respect to the bending plane, and a second lowered inactive position, completely below the bending plane.
  • each bending unit is selectively movable between the first position and the second position, independently with respect to the movement support.
  • the bending units are movable between the first position and the second position in a manner coordinated with the movement support.
  • Each contrast means comprises at least a contrast pin having a determinate diameter.
  • - fig. 1 is a schematic view of a bending device according to the present invention in a first operating condition
  • - fig. 2 is a schematic view of the bending device in fig. 1 in a second operating condition
  • - fig. 3 is a schematic view of the bending device in fig. 1 in a third operating condition; - fig. 4 is a schematic view of the bending device in fig. 1 in a fourth operating condition, subsequent to that in fig. 3.
  • a bending device 10 is applied to a bending machine 15 to bend by a desired angle, up to about 180° and more, in this case one or more metal bars 11, for example of the type for making stirrups or other shaped reinforcement pieces for the building trade.
  • the metal bar 11 is fed along an axis of feed "X" by a feed unit, of a known type and not shown in the drawings, disposed upstream of the bending machine 10.
  • the bending device 10 comprises a rotary plate 17, or carousel, which defines a bending plane "P", and on which a plurality of bending units 12 are disposed.
  • Each bending unit 12 is mounted in a determinate position on the rotary plate 17, and comprises its own contrast pin 13, a mandrel 19 rotatable coaxially with the contrast pin 13 and a bending pin 16 mounted peripherally to the mandrel 19.
  • each bending pin 16 is selectively rotatable in a clockwise or anti- clockwise direction around the relative contrast pin 13, so as to make the desired bend in the bar 11 , in one direction or another, in cooperation with the contrast pin 13.
  • Each bending pin 16 is rotatable in an independent manner with respect to the rotation of the rotary plate 17.
  • four different bending units 12 are provided, angularly offset by 90° with respect to each other and each having its own contrast pin 13 of different sizes with respect to the contrast pin 13 of the other bending units 12.
  • a smaller number of bending units 12 may be disposed, for example two at 180° or three at 120°, or a higher number, for example six at 60°, eight at 45°, as well as with non-equivalent angular dispositions.
  • contrast pins 13 of a substantially cylindrical shape, but it is also possible that in different operating solutions double or shaped contrast pins 13 may be provided, or of other sizes and shapes.
  • each bending unit 12 is selectively movable in a direction orthogonal to the bending plane P.
  • each bending unit 12 is selectively movable between a first raised operating position, in which the mandrel 19 is co-planar with the bending plane P and the pins 13 and 16 are disposed above the plane P, and a second lowered inactive position, in which both the mandrel 19 and also the two pins 13 and 16 are completely below the bending plane P.
  • the bending machine 15 to which the bending unit 10 according to the invention is applied comprises a first drawing unit 20, shears 21 and an abutment element for the bend 22, all provided upstream of the bending device 10.
  • a second drawing unit 23 is also part of the machine 15 and is disposed downstream of the bending device 10, and a central abutment element 25, shown by a line of dashes, and disposed at the center of the rotary plate 17 in a fixed condition with respect to the axis of feed X.
  • the second drawing unit 23 and possibly the central abutment element 25 allow to make the tail end bends on the metal bar 11.
  • the distance between the median axis of the respective contrast pins 13 of the two different bending units 12 and the abutment element for the bend 22 is predetermined and variable according to the size of the relative contrast pin 13.
  • the bending device 10 functions as follows. First of all, a determinate bending unit 12 is taken to the first raised operating position. Then, the rotary plate 17 is rotated, so as to dispose said bending unit 12 in cooperation with the axis of feed X, downstream of the abutment element for the bend 22.
  • the metal bar 11 is fed through the first drawing unit 20. Once the metal bar 11 cooperates tangentially with the contrast pin 13 of the bending unit 12, the mandrel 19 moves the bending pin 16 around the contrast pin 13, so as to carry out the steps of making the leading end bends (fig. 1).
  • the metal bar 11 is moved by the second drawing unit 23, possibly assisted by the central abutment element 25.
  • the rotary plate 17 is rotated by about 180° in order to dispose the bending unit 12 downstream from the second drawing unit 23 (fig. 2) with respect to the direction of feed of the metal bar 11.
  • the rotary plate 17 is rotated so as to prepare another bending unit 12 to make a different type of bend on a new metal bar 11.
  • Fig. 4 shows how, on the same metal bar 11 on which a leading end bend was made in fig. 3, a tail end bend is made with another bending unit 12, so as to make a bend of a different diameter.

Landscapes

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

Abstract

L'invention porte sur un dispositif à cintrer (10) et sur un procédé pour une machine à cintrer (15) pour éléments métalliques oblongs (11), incluant une pluralité d'unités de cintrage (12) comportant chacune des broches de contraste (13), un support de cintrage (19) définissant un plan de cintrage (P) sur lequel des éléments métalliques oblongs (11) sont positionnés, et des broches de cintrage (16) montées mobiles autour des broches de contraste associées (13), de façon à cintrer les éléments métalliques oblongs (11) en coopération avec les broches de contraste (13). Le dispositif inclut également un support de mouvement (17) sur lequel sont montées les unités de cintrage (12), chacune des unités de cintrage (12) comportant sa propre broche de contraste (13) présentant une forme différente et des dimensions différentes des broches de contraste (13) des autres unités de cintrage (12), et étant apte à être positionnée de façon sélective par le support de mouvement (17) d'une manière correspondant à une position de cintrage de fonctionnement déterminée.
EP09742063A 2008-05-06 2009-05-05 Dispositif à cintrer pour une machine à cintrer pour éléments métalliques oblongs, et procédé de cintrage associé Withdrawn EP2307154A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD20080096 ITUD20080096A1 (it) 2008-05-06 2008-05-06 Dispositivo piegatore per una macchina piegatrice per elementi metallici oblunghi, e relativo procedimento di piegatura
PCT/EP2009/055421 WO2009135845A1 (fr) 2008-05-06 2009-05-05 Dispositif à cintrer pour une machine à cintrer pour éléments métalliques oblongs, et procédé de cintrage associé

Publications (1)

Publication Number Publication Date
EP2307154A1 true EP2307154A1 (fr) 2011-04-13

Family

ID=40303168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09742063A Withdrawn EP2307154A1 (fr) 2008-05-06 2009-05-05 Dispositif à cintrer pour une machine à cintrer pour éléments métalliques oblongs, et procédé de cintrage associé

Country Status (3)

Country Link
EP (1) EP2307154A1 (fr)
IT (1) ITUD20080096A1 (fr)
WO (1) WO2009135845A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8631674B2 (en) * 2008-12-17 2014-01-21 Aim, Inc. Devices, systems and methods for automated wire bending
CN103100610B (zh) * 2013-02-06 2014-11-19 冯广建 一种杆式钢筋自动成型机
CN103170554B (zh) * 2013-03-25 2014-11-19 冯广建 用于钢筋一次成型的自动成型机
EP3068556A4 (fr) * 2013-11-15 2018-02-14 Textron Innovations Inc. Fourniture de données pour fonctionnement de cintreuse automatisée
JP6088448B2 (ja) * 2014-02-04 2017-03-01 新興機械工業株式会社 曲げ装置及びばね製造機
US20150314348A1 (en) * 2014-05-02 2015-11-05 Cte Sistemi S.R.L. Apparatus for Working Tubes, Bars, Sections and Similar Blanks, Comprising a Plurality of Machines Arranged in Line
CN107470411B (zh) * 2017-09-05 2019-05-17 南京南方联成汽车零部件有限公司 一种汽车零部件中90°定位销小型专用折弯机
JP6962182B2 (ja) * 2017-12-27 2021-11-05 トヨタ自動車株式会社 導線成形装置
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
IT202200002417A1 (it) * 2022-02-10 2023-08-10 M E P Macch Elettroniche Piegatrici Spa Apparato e procedimento per la piegatura di prodotti metallici allungati

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
DE3508809A1 (de) 1985-03-12 1986-09-25 Alpha Maschinenbau AG, Zürich Biegevorrichtung
JPS61255722A (ja) * 1985-05-08 1986-11-13 Ishikawajima Harima Heavy Ind Co Ltd チユ−ブの曲げ加工装置
JPS61259836A (ja) * 1985-05-14 1986-11-18 Ishikawajima Harima Heavy Ind Co Ltd チユ−ブの曲げ加工装置
JP2002143960A (ja) * 2000-11-15 2002-05-21 Noriyoshi Miyamoto 線材の曲げ加工機
ITUD20070240A1 (it) * 2007-12-19 2009-06-20 Piegatrici Macch Elettr Macchina piegatrice per elementi metallici oblunghi, e relativo procedimento

Non-Patent Citations (1)

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Title
See references of WO2009135845A1 *

Also Published As

Publication number Publication date
ITUD20080096A1 (it) 2009-11-07
WO2009135845A1 (fr) 2009-11-12

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