EP2490840B1 - Dispositif de retenue servant à retenir un objet notamment une ébauche de fil métallique - Google Patents

Dispositif de retenue servant à retenir un objet notamment une ébauche de fil métallique Download PDF

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Publication number
EP2490840B1
EP2490840B1 EP10805485.9A EP10805485A EP2490840B1 EP 2490840 B1 EP2490840 B1 EP 2490840B1 EP 10805485 A EP10805485 A EP 10805485A EP 2490840 B1 EP2490840 B1 EP 2490840B1
Authority
EP
European Patent Office
Prior art keywords
holder part
seat
holder
wire
centre
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.)
Not-in-force
Application number
EP10805485.9A
Other languages
German (de)
English (en)
Other versions
EP2490840A2 (fr
Inventor
Bengt Forsberg
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PL10805485T priority Critical patent/PL2490840T3/pl
Publication of EP2490840A2 publication Critical patent/EP2490840A2/fr
Application granted granted Critical
Publication of EP2490840B1 publication Critical patent/EP2490840B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • B21F1/008—Bending wire other than coiling; Straightening wire in 3D with means to rotate the wire about its axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • B21F23/005—Feeding discrete lengths of wire or rod

Definitions

  • the present invention relates to a device for holding an object, preferably an elongate object such as a wire blank, in a working position in a working machine for machining or treatment of the object in one or more work operations and, where appropriate, for also rotating the object during the said work operations, according to the preamble to the following Patent Claim 1.
  • an object preferably an elongate object such as a wire blank
  • wire often gets to be bent into construction components or finished products.
  • manufacture takes place in automatic bending machines, which are supplied with wire or wire blanks.
  • known bending machines have holder devices with certain limitations, which means that the configurations of the products are limited.
  • the wire is held in a fixed position while the wire is bent.
  • a tool has a certain width and a use of the tool means that bending of the wire cannot be carried out along a certain length of the wire, i.e. the length which is occupied by the holder device and further length of the wire closest to the bending tool.
  • One object of the present invention is to enable a bending of a wire along further length of the wire, i.e. that length of the wire which is occupied by the tool for securing the wire during the work or bending operation.
  • Another object of the invention is that bending of a wire or a wire blank shall be able to be carried out in three dimensions with a device according to the invention.
  • the said objects can be met by a holder device for securing the wire during the bending operation.
  • the wire or the wire blank is here held during the bending operation by a holder device which is separate from the bending tool itself, whereby that part of the device which occupies the length of the wire for securement of the wire can be configured with shorter length, i.e. that part of the tool which holds the wire is of smaller dimension.
  • the journaling bearing of the device can be arranged at a distance from the working region and thus does not encroach upon the limited space which is present adjacent to the region in which bending might wish to be carried out.
  • the device which is relatively simple in its design and substantially mechanically constructed, is reliable in its use and can be produced at relatively low cost.
  • the device is characterized according to that which is stated in the characterizing part of Patent Claim 1.
  • the holder device is rotatable about a centre of rotation which corresponds or substantially corresponds with the longitudinal axis for the object which is to be machined or treated, i.e. in the principal extent of the object in the seat in the holder. Furthermore, the holder is mounted in bearing points situated at a distance from its centre of rotation.
  • a control unit and/or a drive unit is/are arranged at a still greater distance from the said centre of rotation than the bearing points for the holder.
  • Figs. 1 and 2 show an embodiment of a holder device 1 according to the invention, arranged with a suspension device 2 for suspending the holder device 1 from a working or bending machine for machining or treatment of an object 3 in one or more work operations.
  • the holder device 1 comprises a holder part 4 and a locking device 5 for securement by clamping, i.e. pinching of the object 3, which preferably is in the form of an elongate object such as a wire or a wire blank.
  • the holder part 4 has a seat 7 for the object 3, for example in the form of one or more surfaces in one or more portions which extend towards the seat 7 and guide the object supplied to the working machine in towards the seat such that the object acquires its intended position in the holder device 1.
  • the locking device 5 comprises a locking member 9 having a locking lug 10 or equivalent and a drive member 11 in the form of a piston cylinder.
  • the locking member 9 is fixed in the moving part 14 of the drive member 11, which moving part is the piston rod part of the piston cylinder.
  • the cylinder part 15 is pivotably suspended from the holder device 1, which will be described in greater detail below.
  • the seat 7 In the open position, the seat 7 is arranged such that it is accessible for the supply of the object 3 to the seat 7.
  • the locking member 9 In a closed position 17, the locking member 9 is arranged to lock or hold the object 3 fixedly in the seat 7 through the application by the piston cylinder of a pressure force for tilting the locking member down against the seat, with the object situated therebetween for clamping thereof as in a nip, in a working position for at least one work operation.
  • the object 3 cannot be displaced or rotated in the seat 7.
  • the device 1 is arranged in such a way that the holder part 4 and the locking member 8 in the closed position, i.e. whilst supporting the object 3, can be rotated about a centre of rotation 34, as will be described in greater detail below.
  • the locking lug 10 of the locking member 9 can be provided with one or more oblique or angled edges or surfaces in order to ensure that an object 3 supplied to the seat 7 or the switching element 4 is guided or adopts the intended position in the seat 7, and that objects with varying dimensions can be secured by the locking member 9 in a locked position in the seat 7.
  • the centre of rotation for the holder part 4 and the locking member 9 coincides or substantially coincides with the longitudinal axis for the object 3 in its adopted position in the seat 7, or with the space for the object 3 in the seat 7.
  • the holder part 4 is mounted in bearings arranged at a distance from the centre of rotation, i.e. the seat 7, or at such a distance that the bearings do not encroach upon the limited space which is present adjacent to the area of engagement with the object 3 in order to secure it in the working machine.
  • the holder part 4 is thus rotatably suspended from the suspension device 2 by means of upper and lower force and motion transmitting bearing arms 17, 18, in the example two in number, having a front end 19, 20 articulately connected to the holder part 4 at front, upper and lower pivot points 21, 22.
  • the bearing arms 17, 18 are supported by the suspension device 2 via a transverse arm 23 and an upper and lower intermediate pivot point 24, 25, as well as a central intermediate pivot point 26.
  • the bearing arms 17, 18 extend also rearwards from the transverse arm and, via rear, upper and lower pivot points 27, 28, are linked by a rear, force-transmitting transverse arm 29 to a central centre of rotation 30 at which the transverse arm 29 is arranged to be rotated by means of a rotatable drive shaft from a drive device 31, for example an electric motor, which is indicated schematically.
  • the bearing arms 17, 18 hereby form, together with the transverse arms 23, 29 and the holder part 4, a force and motion-transmitting parallel mechanism for translating a rotary motion from the drive shaft 30 of the drive device 31 into a rotary motion of the holder part 4 and its seat 7, and hence a rotary motion of a secured object 3, for example a wire.
  • the rotary motion of the holder part 4 results from the fact that the bearing arms 17, 18 are articulately fixed in the holder part 4 at a distance from the centre of rotation, so that forces upon the bearing arms, in this case a pressure force on one and a tensile force on the other bearing arm, create a torque in the holder part for rotation thereof about its centre of rotation.
  • a rotary motor can be replaced with a linear motor, such as a hydraulic or pneumatic piston cylinder, which acts on one bearing arm 17, 18 in its longitudinal direction.
  • a support mechanism 32 having a fixed support portion, in the example in the form of a fixed support arm 33, which is supported by the suspension device 2 and extends forwards towards a support portion forming part of the support mechanism and movable with the holder part 4, is provided.
  • This is formed by the rear side of the holder part 4 on a level with the seat 7, i.e. the centre of rotation of the holder part, which thus coincides with the longitudinal axis 34 of the object 3, i.e. in the example that of the wire.
  • At the front end 35 of the support arm 33 are arranged fixed support surfaces 36-40, which are configured to interact with corresponding movable support surfaces 41-45 on the body 6 of the holder part 4, see Figs. 2 and 3 .
  • the fixed support surfaces comprise at least one, in the example two or three concave circular-arc-shaped, more precisely cylinder-sector-shaped support surfaces 36, 37, 38 with the seat 7, i.e. the centre of rotation 34, as the centre of curvature, and a flat or, as in the example, two flat circular-sector-shaped, mutually facing support surfaces 39, 40.
  • the concavely curved surfaces could be flat, though there is then no surface contact with the interacting movable surfaces.
  • the movable support surfaces 41-45 are constituted, as can best be seen from Fig. 2 , by at least one, in the example two or three convexly curved, circular-arc-shaped or cylinder-sector-shaped support surfaces, which interact with the fixed, concavely curved support surfaces 36, 37, 38 and shall thus have a radius of curvature which is approximately as large as the corresponding fixed support surfaces or smaller than these.
  • the movable support surfaces 41-45 are configured on an arc-shaped, in the example stepwise tapered edge portion 46 on the inner side of the holder part 4.
  • This edge portion 46 thus forms the movable support portion and extends into and runs, under the rotational motion of the holder part 4, through a recess 47 at the front end 35 of the support arm 33.
  • the movable support surfaces 41-45 of the support mechanism 32 are thus arranged to rest against the fixed support surfaces 36-40 through contact with these both in the stationary state of the holder part 4 and during its rotation, when the movable support surfaces are allowed to slide against the fixed support surfaces.
  • one or more of the support surfaces are in contact with one another. The important thing is that at least one movable support surface, at least while under load, can be in contact with a corresponding fixed support surface.
  • Fig. 7 shall illustrate a work bench 48, track, guide bar or equivalent in a bending machine for bending an object 3 such as a wire or wire blank by means of bending tools 49.
  • a clamp or holder for the wire 3 and/or a gripping tool for securing the wire during its bending is/are shown with the reference notation 50.
  • Such a clamp 50 steals space along the wire 3 and means, inter alia, that the wire cannot be subjected to a bending along a certain and significant length of the wire, especially if a holder, moreover, is arranged between the shown clamps 50 in order to secure the wire during the bending operation.
  • the holder device 1 according to the invention is shown schematically in order to illustrate that a use thereof prevents only a small length of the wire from being subjected to bending.
  • the locking device 9 of the holder device 1 has a minimal width.
  • the machine in the example is thus of a type having a fixed centre holder 1 for the wire 3, for firstly securing and secondly rotating the wire about its longitudinal axis, and two wire holders 50, which are movable in the longitudinal direction of the wire and are integrated with the movable bending tools that move between chosen positions along the wire in which bending shall take place in a relative direction that is chosen by the rotational position for the wire chosen by the centre holder for each bending.
  • Fig. 8 shows a wire 3 which has been subjected to bending 51 adjacent to the locking device 5 of the holder device 1, wherein that length of the wire which cannot be subjected to a bending is shown with the notation 1.
  • a corresponding bending 52 in the use of commonly found tools and holders is illustrated in Fig. 6 , wherein it can be seen that that length 1 of the wire 3 which cannot be subjected to a bending 52 is significant.
  • a use of a holder device 1 according to the invention opens up possibilities for a fresh design approach and configuration of products with hopefully improved design, or manufacture of new products.
  • the device 1 has an operationally reliable and simple construction, which can be realized at low cost. Furthermore, it is easily accessible for possible maintenance and adjustment, and also for repair should this prove necessary. It is important, however, that bending 52 can be carried out in the immediate vicinity of the device 1, which occupies only a small length 1 of the wire 6. That bending 52 can be carried out in the vicinity of the device lends stability to the work operation. The operating problems which often occur with known devices due to lack of space are wholly eliminated if the device 1 according to the invention is used.
  • the object 6 or the wire can be subjected to a bending by a plurality of tools along its extent in the machine, and two-dimensional bending.
  • a radial rotation of the wire between bending operations by means of the device 1 or the holder 2 according to the invention the wire can be bent in other directions or into a bent object extending in three dimensions.
  • the wire can thus be set rotating one or more times during the machining operations and at a relatively large angle of rotation.
  • the movable support portion can have the shape of a recess or groove into which the fixed portion extends.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Jigs For Machine Tools (AREA)
  • Wire Processing (AREA)

Claims (8)

  1. Dispositif de retenue d'un objet, préférablement un objet allongé tel qu'une ébauche de fil métallique, dans une position de travail dans une machine de travail pour usinage ou traitement de l'objet dans une ou plusieurs opérations de travail, et, si nécessaire, aussi pour faire tourner l'objet lors desdites opérations de travail, le dispositif (1) comprenant une partie de retenue (4) présentant un siège (7) pour l'objet (3) dans lequel l'objet est retenu pendant les opérations de travail, la partie de retenue (4) étant arrangée de manière rotatoire autour d'un centre de rotation (34) qui correspond ou correspond essentiellement avec l'axe pour l'objet (3) dans son étendue dans le siège (7), et la partie de retenue (4) étant supportée dans un dispositif de suspension fixée (2) au moyen d'un mécanisme émetteur de mouvement qui est pourvu de bras de palier (17, 18) raccordés entre un dispositif d'entraînement (30) et la partie de retenue via des points de pivot (21, 22, 24, 25, 27, 28) situés à une distance du centre de rotation (34) afin de créer un couple sur la partie de retenue (4) pour sa rotation, partie de retenue (4) dans laquelle un dispositif de verrouillage (5) est arrangé pour changer un élément de verrouillage (9) entre une position de fixation pour l'objet dans le siège et une position de libération,
    caractérisé en ce qu'un mécanisme de support (32) est arrangé entre le dispositif de suspension (2) et la partie de retenue (4) sur un niveau avec le siège (7), et en ce que le mécanisme de support (32) présente un bras de support fixé (33) ayant des surfaces de support fixées (36-40) qui interagissent avec des surfaces de support mobiles (41-45) sur une portion de support qui peut se déplacer avec la partie de retenue.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'au moins certaines des surfaces de support mobiles (41-43) de la portion de support mobile (46) présentent une étendue en arc de cercle ayant un centre de courbure qui coïncide avec le centre de rotation (34) de la partie de retenue (4).
  3. Dispositif selon la revendication 2, caractérisé en ce qu'au moins certaines des surfaces de support fixées (36-40) de la portion de support fixée (33) sont uniformes avec des surfaces de support mobiles correspondantes (41-43).
  4. Dispositif selon la revendication 3, caractérisé en ce que la portion de support mobile (46) est configurée en tant qu'une partie d'un arc circulaire et est arrangée pour s'étendre dans un évidement dans la portion de support fixée (33) pour y être supportée et guidée.
  5. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de retenue (1) comprend un dispositif de verrouillage (5) qui est combiné avec ou fait partie de la partie de retenue (4) ou un corps (6) y incorporé.
  6. Dispositif selon la revendication 5, caractérisé en ce que le dispositif de verrouillage (5) présente un élément de verrouillage (9), le dispositif de verrouillage (5) ou l'élément de verrouillage (9) étant arrangé pour pouvoir changer entre une position ouverte et une position fermée, dans la position ouverte, le siège (7) étant arrangé si bien qu'il est accessible, et dans la position fermée, l'élément de verrouillage (9) étant arrangé pour fixer ou verrouiller l'objet (3) dans la partie de retenue (4) ou dans son siège (7).
  7. Dispositif selon la revendication 6, caractérisé en ce que l'élément de verrouillage (9) présente une languette de verrouillage (10) or équivalent qui est arrangée pour retenir, verrouiller et/ou fixer la position de l'objet (3) dans le siège (7) et, si nécessaire, aussi guider l'objet (3) dans une position prévue dans le siège (7).
  8. Dispositif selon la revendication 2, 3 ou 4, caractérisé en ce que des bouts des bras de palier (17, 18) sont combinés avec la partie de retenue (4) ou le corps (6) et les autres bouts de ceux-ci sont combinés avec un dispositif d'entraînement (31), ou un arbre d'entrainement ou équivalent ayant ledit dispositif d'entraînement, les bras de palier (17, 18) étant arrangés si bien qu'ils peuvent être déplacés mutuellement dans le dispositif de retenue (1) en maintenant un parallélisme mutuel ou mouvement parallèle.
EP10805485.9A 2009-10-20 2010-10-18 Dispositif de retenue servant à retenir un objet notamment une ébauche de fil métallique Not-in-force EP2490840B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10805485T PL2490840T3 (pl) 2009-10-20 2010-10-18 Urządzenie przytrzymujące do przytrzymywania przedmiotu takiego jak półfabrykat druciany

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0950774A SE534218C2 (sv) 2009-10-20 2009-10-20 Hållaranordning för att hålla ett föremål såsom ett trådämne
PCT/IB2010/002981 WO2011048501A2 (fr) 2009-10-20 2010-10-18 Dispositif de retenue servant à retenir un objet notamment une ébauche de fil métallique

Publications (2)

Publication Number Publication Date
EP2490840A2 EP2490840A2 (fr) 2012-08-29
EP2490840B1 true EP2490840B1 (fr) 2013-08-07

Family

ID=43769147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10805485.9A Not-in-force EP2490840B1 (fr) 2009-10-20 2010-10-18 Dispositif de retenue servant à retenir un objet notamment une ébauche de fil métallique

Country Status (6)

Country Link
EP (1) EP2490840B1 (fr)
JP (1) JP5624151B2 (fr)
CN (1) CN102712029B (fr)
PL (1) PL2490840T3 (fr)
SE (1) SE534218C2 (fr)
WO (1) WO2011048501A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE534834C2 (sv) * 2010-05-17 2012-01-17 Bengt Forsberg Hållaranordning för att fasthålla ett trådämne
GR1008523B (el) * 2014-04-01 2015-07-09 Αντωνιος Παναγιωτη Αναγνωστοπουλος Μεθοδος και συστημα τροφοδοσιας διαμηκων συρματων ή μπετοβεργων σε μηχανηματα παραγωγης πλεγματος

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991599A (en) * 1975-12-02 1976-11-16 The United States Of America As Represented By The United States Energy Research And Development Administration Rib forming tool for tubing
JPS61103625A (ja) * 1984-10-29 1986-05-22 Maru Kikai Kogyo Kk パネルフオ−マ−
JPS61165232A (ja) * 1985-01-17 1986-07-25 Usui Internatl Ind Co Ltd 金属管曲げ加工時の曲げ方向自動設定装置
US4662204A (en) * 1985-01-17 1987-05-05 Usui Kokusai Sangyo Kabushiki Kaisha Apparatus for automatically bending metallic tubes
JPS61172623A (ja) * 1985-01-28 1986-08-04 Usui Internatl Ind Co Ltd 金属管の自動曲げ加工方法及びその装置
CN2038425U (zh) * 1988-03-18 1989-05-31 林培尧 液压式电动钢筋弯曲机
JPH064174B2 (ja) * 1988-05-19 1994-01-19 株式会社中央電機製作所 曲げ加工装置
JPH02299723A (ja) * 1989-05-11 1990-12-12 Chuo Electric Mfg Co Ltd 曲げ加工装置
JP4002465B2 (ja) * 2002-04-24 2007-10-31 丸昭機械株式会社 線条材曲げ加工装置
DE502007005038D1 (de) * 2007-02-07 2010-10-28 Wafios Ag Biegemaschine
CN101508002B (zh) * 2009-03-12 2010-12-01 佛山市南海力丰机床有限公司 型材压型液压机

Also Published As

Publication number Publication date
WO2011048501A2 (fr) 2011-04-28
SE534218C2 (sv) 2011-06-07
CN102712029A (zh) 2012-10-03
PL2490840T3 (pl) 2014-01-31
JP5624151B2 (ja) 2014-11-12
CN102712029B (zh) 2014-12-17
JP2013508164A (ja) 2013-03-07
SE0950774A1 (sv) 2011-04-21
EP2490840A2 (fr) 2012-08-29
WO2011048501A3 (fr) 2011-06-16

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