EP0141745A1 - Automatische Maschine zum Biegen in einer räumlichen Konfiguration feiner und gerader Elemente, insbesondere Metalldrähten - Google Patents

Automatische Maschine zum Biegen in einer räumlichen Konfiguration feiner und gerader Elemente, insbesondere Metalldrähten Download PDF

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Publication number
EP0141745A1
EP0141745A1 EP84402196A EP84402196A EP0141745A1 EP 0141745 A1 EP0141745 A1 EP 0141745A1 EP 84402196 A EP84402196 A EP 84402196A EP 84402196 A EP84402196 A EP 84402196A EP 0141745 A1 EP0141745 A1 EP 0141745A1
Authority
EP
European Patent Office
Prior art keywords
axis
folding
machine according
rotation
rod
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
EP84402196A
Other languages
English (en)
French (fr)
Other versions
EP0141745B1 (de
Inventor
Michel Remy
Jean-françois Delaite
Guy Woirgard
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.)
Faurecia Sieges dAutomobile SAS
Original Assignee
Autocoussin SA
Autocoussin Industrie SA
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 Autocoussin SA, Autocoussin Industrie SA filed Critical Autocoussin SA
Priority to AT84402196T priority Critical patent/ATE43803T1/de
Publication of EP0141745A1 publication Critical patent/EP0141745A1/de
Application granted granted Critical
Publication of EP0141745B1 publication Critical patent/EP0141745B1/de
Expired legal-status Critical Current

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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
    • 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
    • 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
    • B21F35/00—Making springs from wire

Definitions

  • the present invention relates to a machine for bending sections of thin and straight metal elements of the son, strip or tube type, this machine comprising positioning means for maintaining a section of metal element to bend on a first axis, and at least one folding member which cooperates with a folding counterpart placed on said first axis and which, on the one hand under the action of a first drive mechanism, can be driven by an angular rotation movement around a second axis perpendicular to the first to the right of the folding counterpart and, on the other hand, by means of a second drive mechanism can be moved back and forth on a third axis parallel to the second, said folding member also being movable, together with the folding counterpart, in a direction parallel to the first axis.
  • the succession of these movements makes it possible first of all to bring the folding member into lateral contact with the wire, then to make it rotate through a certain angle, in one direction or the other, so that it folds the wire around ie the folding counterpart, and finally to retract it before the folding member is moved with the folding counterpart.
  • the degree of bending of the wire is a function of the angle by which the bending member is rotated and the pitch of the latter in advance determines the length of the segment of bent wire.
  • the present invention provides a cambering machine which while being simple structure and automatic operation, ensures high production rates and allows, with a loss of time minimized to the maximum, to produce in succession folded wires according to different spatial configurations, this machine being furthermore great flexibility of use in that it can bend wires of all diameters but also other thin and elongated metallic elements, such as strips and tubes.
  • this bending machine which is of the type specified in the preamble, is characterized in that the means for positioning the section of metal element to be bent comprise, on the one hand, a clamp capable of immobilizing the section d metal element to be folded on said first axis and, on the other hand, a pair of jaws displaceable jointly with the folding member and at least one of which is movable, the jaws of these jaws constituting said folding counterpart , said clamp being further mounted for rotation about the first axis and associated with a third drive mechanism capable of imparting to it an angular rotation about this axis.
  • the rotation of the clamp makes it possible to modify at will the orientation of the folding member, with respect to the wire, in a plane perpendicular to the latter and consequently, the folding member can, at each of its stops along the wire, arch the latter in a different spatial direction.
  • the cambering machine comprises two folding members each associated with a folding counterpart and arranged on either side of the clamp.
  • this arrangement makes it possible to double the production rate of the machine. It should also be noted that, on either side of the clamp, the two folding members can bend the wire according to completely different spatial configurations without this production rate being affected.
  • the clamp is formed by a disc provided with a radial slot opening on its periphery and mounted for rotation about its center on a support arm secured to the frame of the machine, this disc further comprising clamping members. of the section of metal element to be bent.
  • the clamp opposes an extremely reduced inertia to its rotation.
  • the clamping members are constituted by tabs projecting from the edges of the slot opposite one another at the center of the disc, at least one of these tabs being movable and displaceable against the action of an elastic element which urges it towards the other cleat.
  • the cambering machine comprises a member for moving the movable cleat, constituted by a jack whose rod comes, in a certain angular position of the disc, in alignment with a bore of the latter, open on its periphery, in which slides a rod secured to the movable cleat.
  • the third drive mechanism ensuring the rotation of the disc comprises a motor coupled to a shaft which carries, over at least part of its length, a toothing meshing with a toothed crown carried by the periphery of the disc and tangent to the tree.
  • each folding member is constituted by a folding finger mounted to slide on said third axis in a support head which has an axis of symmetry constituting the second axis and which is kept in rotation around it. the latter inside a movable frame on a rail parallel to the first axis.
  • This folding finger is of a very reduced weight and opposes an almost negligible inertia to the actuation of its movement mechanism. As a result, its back-and-forth movement is instantaneous, which has a favorable influence on the working speed and the productivity of the bending machine according to the invention.
  • the first folding finger drive mechanism comprises an endless chain extending parallel to the first axis around two toothed wheels, one of which is fixed coaxially around the support head and the other is carried by a loose shaft mounted for free rotation in the frame, parallel to the axis of rotation of the support head, one of the strands of the endless chain being connected to the free end of the rod of a jack which is parallel.
  • the endless chain is a silent chain and the free end of the cylinder rod is slidably mounted along a guide rail parallel to the rod.
  • This mode of driving the folding member in rotation has the advantage, on the one hand, of being very precise as regards the repeatability of the folding angles and, on the other hand, to produce very low angular rotations of up to 1/10 of a degree.
  • the second folding finger drive mechanism comprises a jack integral with the frame, the rod of which passes freely through the support head along the axis of rotation of the latter, the free end of this rod being connected to the folding finger by a rotating lateral connection.
  • the first, second and third drive mechanisms as well as the jaw control system and that of the movement of the folding members are actuated in synchronism by a programmable digital control with programming. assisted.
  • the arching machine shown in FIG. 1 comprises a bench 1 on which is mounted, substantially at mid-length, a support clamp 2 which, according to the primary characteristic of the invention, can undergo an angular rotation around a horizontal axis X which passes through its center.
  • the bench 1 also carries, located on either side of the support clamp 2, two identical folding devices 3 and 4 which, by means of a lateral support frame 5, 6, are mounted to slide. on a horizontal cylindrical rail 7 fixed to the bench 1.
  • Two hydraulic jacks 8, 9 of great length, carried by the bench 1, are further provided for moving the folding devices in successive stages along the rail 7, respectively one side and the other of the support clamp 2.
  • the rods 10, 11 of these two jacks 8, 9, which are respectively integral with the folding devices 3 and 4, extend in opposite directions in a horizontal direction.
  • the admission and evacuation of the working fluid into and out of the cylinders of the two jacks is done through conduits 14, 15 connected, by means of a relay 16, to a hydraulic power station not shown.
  • each of the folding devices 3 or 4 carries, on a vertical flat face, two jaws 17, 18 mounted on either side of the axis of rotation X of the support clamp 2, the upper jaw 17 being able to be moved away from the lower jaw 18 by means of a hydraulic jack 19 visible in FIG. 2, which represents in section, one of the folding devices 3 or 4.
  • the essential member of this folding device is constituted by a folding finger 20 projecting from the front face 21 of a support head 22 rotatably mounted about its axis of symmetry Y and, by means of two bearings 24, 25, in a frame 23, the axis of rotation Y of the support head 22 being horizontal and perpendicular to the axis of rotation X of the support clamp 2.
  • the folding finger 20 is eccentric with respect to this axis of rotation Y, as is clear from FIG. 4 which also shows that the two jaws 17, 18, which have been mentioned above, are carried by the front face 21 of the support head 22 while being positioned so that their spouts 26, 27 stop at the right of the axis of rotation Y of the latter.
  • the support head 22 can be driven in an angular rotational movement under the action of a first drive mechanism 28 housed in an interior cavity 29 of the frame 23.
  • this first drive mechanism 28 comprises an endless chain 30, preferably a silent chain, which is wound around two toothed wheels 31, 32, the one 31 is fixed coaxially around the support head 22 and the other 32 is carried by a loose shaft 33 held in rotation in the frame 23 about an axis parallel to that Y of the support head.
  • One of the two strands of the endless chain 30 is connected by a connecting link 34 to the end of the rod 35 of a hydraulic cylinder 36 fixed on the underside of the frame 23.
  • the free end of the rod the jack 35 is also slidably mounted by means of a ball bushing 37, along a cylindrical rail 38 parallel to the strands of the chain 30 and fixed by its ends to the frame 23.
  • the endless chain 30, driven in one direction or the other by the jack 36 rotates the support head 22 by an angle determined by the stroke of the jack rod, this angular rotation being transmitted to the folding finger 20 which describes an arc of a circle with the same angle in the center, around the axis Y.
  • the finger 20 and the spouts 26 and 27 of the two jaws 17 and 18 are each provided with a groove intended to receive the wire F, these grooves having the shape of a V to be adapted to all wire diameters.
  • the folding finger 20 is slidably mounted in the support head 22 and that it is also associated with a second drive mechanism 39 capable of imparting to it a movement of back and forth along an axis Z parallel to the axis of rotation Y of the support head 22.
  • This second drive mechanism 39 more specifically comprises a pneumatic cylinder 40 fixed externally to the rear wall 41 of the frame 23, in which is formed an opening 42 traversed by the rod 43 of the jack.
  • the cylinder rod 43 passes freely through the support head 22, along the axis Y and, at its free end, opens into an interior cavity 44 of the support head where it is connected to the folding finger 20 by a rotary link 45. Thanks to this link, the finger 20 can be rotated about the axis Y while being able to be moved in translation by the jack rod 43, whatever its angular position. In this way, after having made a folding, the finger 20 can be retracted to then be placed on the other side of the wire in order to practice on it folding in the opposite direction, after a displacement of the folding device relative over.
  • the three jacks 19, 36 and 40 which have just been mentioned, are put into action by means of a working fluid coming from a central allocation through the relay 16 and conveyed by flexible conduits 19a maintained inside curved gutters 19b which are formed by several U-shaped elements 19c articulated end-to-end, so as to be able to follow the movement of the two folding devices 3 and 4 (see FIG. 1).
  • the support arm 48 of this clamp is fixed to the bench 1 of the machine and the clamp itself is constituted by a circular disc 49, provided with a radial slot 50 s opening on its periphery, this disk being mounted for rotation in a vertical plane and around the axis X visible in FIG. 1, inside an extension 51 of the support arm 48.
  • the disk 50 is more precisely retained in a circular slide 52 carried by the edge of a recess of corresponding shape formed in the extension 51 in the front face of which is formed a notch 53 substantially in V, which communicates with the slot 50 of the disc 49, when the latter is in its rest position shown in Figures 5 and 6.
  • Figure 6 shows that the disc 49 has on its periphery a oblique toothed crown 54 which meshes with a complementary toothing formed on a sleeve 56, itself fixed around a shaft 57 rotatably mounted in an oblique position of tangency with the toothed crown 54, inside a housing cylindrical 58 arranged in the support arm 48.
  • the shaft 57 is coupled at 59 to an electric motor 60 carried by the arm 48 while its other end 61 is retained for rotation in a bearing 62 integral with the wall of the housing 58. Close to the motor 60, the shaft 57 is also retained inside a bearing 63.
  • the disc 49 can be placed in any angular position under the action of the motor 60 which acts on the ring gear 54, by means of the toothed sleeve 56 of the shaft 57.
  • the disc 49 contains two clamping lugs 64, 65 which project slightly opposite one another, in the center of the disc, on the two edges of the slot 50. L 'one of these tabs 65 is fixed while the other 64 is movably mounted inside an interior cavity 66 of the disc, a spring 67 being interposed between the bottom of this cavity 66 and the movable cleat 64. Furthermore , the latter is integral with a rod 68 which slides tightly in a bore 69 extending parallel to the direction of movement of the movable cleat 64, this bore opening at 70 on the periphery of the disc 49.
  • a hydraulic cylinder 71 which rod 72 can slide inside said extension 51 to come into alignment with the bore 69 and penetrate the inside the latter, when the disc 49 is in its rest position shown in FIG. 6.
  • the actuator 71 can be actuated so that its rod 72 pushes the rod 68 upwards, thereby moving the movable cleat 64 away from the fixed cleat 65, against the force of the spring 67, the displacement of the movable cleat being limited by a stop 73.
  • the motor 60 by rotating the disc 49 around the axis X, makes it possible to orient the wire F in any angular position relative to the folding fingers 20 of the two folding devices 3 and 4 and therefore to fix the folding direction around the X axis at each stop of the folding devices along the rail 7.
  • the various jacks 8, 9, 19, 36, 40 and 71 of the cambering machine according to the invention are supplied with working fluid, under the control of a digital console which also governs the operation of the motor 60 ensuring the rotation of the clamp 2.
  • the digital control panel contains a playback device into which a magnetic tape cassette can be inserted, on which a program is pre-recorded in the form of a succession of digital instructions which govern and synchronize the operations of the various moving parts of the machine depending on the type of folded wire article you want to make.
  • these instructions relate, for each folding cycle, to the speed and the angle of rotation of the folding finger 20 around the Y axis and of the clamp 2 around the X axis, to the movement of back and forth of the folding finger 20, at the amplitude of movement of the two folding devices 3 and 4 and at the instant of opening of the jaw 17 of the latter.
  • the program also makes it possible to automatically search for the origins of the various movements of the bending machine and to manage faults.
  • this programmable digital control makes it possible to considerably increase the profitability in the case of a medium or small series production, since a change in the type of production requires only one replacement of one program cassette by another.
  • the program of an article can also be viewed on a standard video screen in the form of a table and the operator has the possibility of modifying any parameter of the table by the cursor of the video screen.
  • the cambering machine according to the invention is of very high precision since the folding finger 20 can undergo a minimum angular rotation of 0.04 ° around the axis of rotation Y of the support head. 22, which allows it to make folds, according to non-polygonal curves and in particular according to arcs of circles.
  • the advance precision of the folding devices 3,4 is ⁇ 0.05 mm and that of the angular rotation of the clamp 2 is ⁇ 0.24 °.
  • the cambering machine according to the invention also has the advantage of allowing a high production rate since it is equipped with two folding devices which operate simultaneously on either side of the clamp. It should be noted here that the two folding devices can produce different folding spatial configurations since they can be programmed individually.
  • cambering machine according to the invention, one can also cite its very great flexibility of use. Indeed, it can bend metal wires whose diameter can reach 8 mm as well as metal strips or ribbons.
  • the machine according to the invention can even produce bent tubes, more particularly thanks to the very high precision of the second drive mechanism 39 of the folding finger 20 which allows bending in an arc by successive close keys.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wire Processing (AREA)
  • Transmission Devices (AREA)
  • Gears, Cams (AREA)
  • Threshing Machine Elements (AREA)
  • Powder Metallurgy (AREA)
  • Vehicle Body Suspensions (AREA)
EP84402196A 1983-11-02 1984-10-31 Automatische Maschine zum Biegen in einer räumlichen Konfiguration feiner und gerader Elemente, insbesondere Metalldrähten Expired EP0141745B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84402196T ATE43803T1 (de) 1983-11-02 1984-10-31 Automatische maschine zum biegen in einer raeumlichen konfiguration feiner und gerader elemente, insbesondere metalldraehten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8317379 1983-11-02
FR8317379A FR2554021B1 (fr) 1983-11-02 1983-11-02 Machine automatique perfectionnee pour cambrer selon une configuration speciale des elements minces et rectilignes, et notamment des fils metalliques

Publications (2)

Publication Number Publication Date
EP0141745A1 true EP0141745A1 (de) 1985-05-15
EP0141745B1 EP0141745B1 (de) 1989-06-07

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ID=9293696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84402196A Expired EP0141745B1 (de) 1983-11-02 1984-10-31 Automatische Maschine zum Biegen in einer räumlichen Konfiguration feiner und gerader Elemente, insbesondere Metalldrähten

Country Status (10)

Country Link
US (1) US4655069A (de)
EP (1) EP0141745B1 (de)
JP (1) JPS61500257A (de)
AT (1) ATE43803T1 (de)
CA (1) CA1252030A (de)
DE (1) DE3478582D1 (de)
ES (1) ES8600616A1 (de)
FR (1) FR2554021B1 (de)
PT (1) PT79443B (de)
WO (1) WO1985001898A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602160A1 (fr) * 1986-08-04 1988-02-05 Latour Fils Procede et machine modulaire de cambrage de fils metalliques
EP0263607A1 (de) * 1986-09-27 1988-04-13 Langbow Limited Biegemaschinen
FR2610852A1 (fr) * 1987-02-17 1988-08-19 Picot Sa Machine a cintrer les tubes, pourvue de deux tetes de cintrage
FR2622129A1 (fr) * 1987-10-26 1989-04-28 Delaite Jean Francois Machine de conformation d'un troncon de fil ou de tube par pliages successifs
FR2634676A1 (fr) * 1988-07-26 1990-02-02 Alpha Maschinenbau Ag Dispositif pour plier des materiaux de forme allongee tels que fils metalliques, materiaux en bande ou profiles
EP0554533A1 (de) * 1992-02-03 1993-08-11 YASKAWA & COMPANY. Ltd. Drahtbiegevorrichtung
EP0583870A1 (de) * 1992-06-17 1994-02-23 Tube Tooling Limited Rohrbiegevorrichtung und Verfahren

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US4758215A (en) * 1985-09-19 1988-07-19 Fuji Photo Film Co., Ltd. Photographic paper handling apparatus
JPH089063B2 (ja) * 1985-10-21 1996-01-31 臼井国際産業株式会社 パイプ自動ベンダーにおける曲げ加工ユニット装置
JP3685526B2 (ja) * 1995-07-14 2005-08-17 臼井国際産業株式会社 パイプの曲げ加工装置
FR2758281B1 (fr) 1997-01-14 1999-04-02 Robolix Sa Machine a cintrer des tubes de faible diametre, notamment inferieurs a 10mm, predecoupes et presentant des systemes de raccord a chacune de leurs extremites, et tete de cintrage pour une telle machine
FR2859653B1 (fr) * 2003-09-12 2006-03-17 Silfax Sa Machine orbitale pour le cintrage des tubes
US7503185B2 (en) * 2004-05-25 2009-03-17 Ice Energy, Inc. Refrigerant-based thermal energy storage and cooling system with enhanced heat exchange capability
DE102009042694A1 (de) * 2009-09-23 2011-03-24 Sms Siemag Ag Modulare Führungseinrichtung
CN103909422B (zh) * 2014-03-13 2017-06-20 南通合兴铁链股份有限公司 一种金属圆条自动成型设备
CN112170741A (zh) * 2020-09-14 2021-01-05 昆明铁新建设工程管理有限公司 钢筋网片自动弯钩机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045740A (en) * 1960-04-14 1962-07-24 Jack C Davis Wire bending machine
GB1011988A (en) * 1963-03-14 1965-12-01 Slumberland Group Ltd Wire bending machine
US3245433A (en) * 1962-05-10 1966-04-12 Geometric Spring Company Wire bending machine
USRE27021E (en) * 1969-07-24 1971-01-05 Wire-bending apparatus
DE3236663A1 (de) * 1981-12-23 1983-07-07 Toyota Jidosha K.K., Toyota, Aichi Verfahren und vorrichtung zur herstellung von formdraehten
EP0108695A1 (de) * 1982-11-08 1984-05-16 Autocoussin Industrie Automatische Maschine zum Biegen in einer räumlichen Konfiguration feiner und gerader Metallteile, insbesondere Metalldrähten

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US27021A (en) * 1860-01-31 jenkins

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045740A (en) * 1960-04-14 1962-07-24 Jack C Davis Wire bending machine
US3245433A (en) * 1962-05-10 1966-04-12 Geometric Spring Company Wire bending machine
GB1011988A (en) * 1963-03-14 1965-12-01 Slumberland Group Ltd Wire bending machine
USRE27021E (en) * 1969-07-24 1971-01-05 Wire-bending apparatus
DE3236663A1 (de) * 1981-12-23 1983-07-07 Toyota Jidosha K.K., Toyota, Aichi Verfahren und vorrichtung zur herstellung von formdraehten
EP0108695A1 (de) * 1982-11-08 1984-05-16 Autocoussin Industrie Automatische Maschine zum Biegen in einer räumlichen Konfiguration feiner und gerader Metallteile, insbesondere Metalldrähten

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602160A1 (fr) * 1986-08-04 1988-02-05 Latour Fils Procede et machine modulaire de cambrage de fils metalliques
EP0263607A1 (de) * 1986-09-27 1988-04-13 Langbow Limited Biegemaschinen
FR2610852A1 (fr) * 1987-02-17 1988-08-19 Picot Sa Machine a cintrer les tubes, pourvue de deux tetes de cintrage
EP0281488A1 (de) * 1987-02-17 1988-09-07 Eaton Leonard Picot S.A. Drehender Biegekopf für Rohrbiegemaschine
FR2622129A1 (fr) * 1987-10-26 1989-04-28 Delaite Jean Francois Machine de conformation d'un troncon de fil ou de tube par pliages successifs
FR2634676A1 (fr) * 1988-07-26 1990-02-02 Alpha Maschinenbau Ag Dispositif pour plier des materiaux de forme allongee tels que fils metalliques, materiaux en bande ou profiles
EP0554533A1 (de) * 1992-02-03 1993-08-11 YASKAWA & COMPANY. Ltd. Drahtbiegevorrichtung
US5291771A (en) * 1992-02-03 1994-03-08 Yashawa & Company, Ltd. Wire bending apparatus
EP0583870A1 (de) * 1992-06-17 1994-02-23 Tube Tooling Limited Rohrbiegevorrichtung und Verfahren

Also Published As

Publication number Publication date
FR2554021A1 (fr) 1985-05-03
PT79443A (fr) 1984-12-01
ES537629A0 (es) 1985-10-16
EP0141745B1 (de) 1989-06-07
DE3478582D1 (en) 1989-07-13
US4655069A (en) 1987-04-07
CA1252030A (fr) 1989-04-04
ES8600616A1 (es) 1985-10-16
PT79443B (fr) 1986-08-08
JPS61500257A (ja) 1986-02-20
FR2554021B1 (fr) 1987-09-04
ATE43803T1 (de) 1989-06-15
WO1985001898A1 (fr) 1985-05-09

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