EP0101675A2 - Appareil à plier pour matériau en forme de fil ou de bande - Google Patents

Appareil à plier pour matériau en forme de fil ou de bande Download PDF

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Publication number
EP0101675A2
EP0101675A2 EP83890136A EP83890136A EP0101675A2 EP 0101675 A2 EP0101675 A2 EP 0101675A2 EP 83890136 A EP83890136 A EP 83890136A EP 83890136 A EP83890136 A EP 83890136A EP 0101675 A2 EP0101675 A2 EP 0101675A2
Authority
EP
European Patent Office
Prior art keywords
bending
wire
template
face
tool
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
EP83890136A
Other languages
German (de)
English (en)
Other versions
EP0101675B1 (fr
EP0101675A3 (en
Inventor
Ritter Dipl.-Ing. Klaus
Gerhard Dipl.-Ing. Dr. Ritter
Gerhard Dipl.-Ing. Schmidt
Josef Dipl.-Ing. Dr. Ritter
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.)
EVG Entwicklungs und Verwertungs GmbH
Original Assignee
EVG Entwicklungs und Verwertungs GmbH
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 EVG Entwicklungs und Verwertungs GmbH filed Critical EVG Entwicklungs und Verwertungs GmbH
Publication of EP0101675A2 publication Critical patent/EP0101675A2/fr
Publication of EP0101675A3 publication Critical patent/EP0101675A3/de
Application granted granted Critical
Publication of EP0101675B1 publication Critical patent/EP0101675B1/fr
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
    • 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
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
    • B21F27/14—Specially bending or deforming free wire ends

Definitions

  • the invention relates to a bending device for wire or band-shaped material, with a fixed bending template and a preferably circular-cylindrical bending tool which can be pivoted about the bending template, in particular for bending back the transverse wire end parts projecting beyond the longitudinal edge wires of reinforcement grids for reinforced concrete construction to the longitudinal edge wires.
  • Bending devices of this type are known for example from AT-B-314 319.
  • One of these known bending devices has a circular-cylindrical bending mandrel which is fixed during the bending process in the center of the bending movement and which forms a bending template which defines the bending diameter, and a circular-cylindrical bending tool which can be guided around this mandrel at a distance on a circular path and which bends the wire around the mandrel.
  • the bending mandrel and the movable bending tool are connected to one another by a common arm to form a tool unit.
  • the entire tool unit is retracted in the direction perpendicular to the bending plane to such an extent that the tool unit can be swiveled freely under the wire into the opposite position relative to it.
  • Bending devices of this type could therefore also be used for the special task of bending back the transverse wire end pieces which protrude beyond the longitudinal edge wires of reinforcement meshes for reinforced concrete construction in the direction of these longitudinal longitudinal wires, so that they form loops, after which such mats are also called "loop mats".
  • the tool unit would have to be withdrawn from the bending plane after each completed bending process in order to enable an unhindered grid feed and thereby to be able to bring a new transverse wire end part into the correct position with respect to the tool unit for the subsequent bending process. The tool unit would then have to be pushed back into the bending plane in order to be able to carry out the next bending process.
  • the object of the invention is therefore to develop a bending device of the type specified in the introduction so that with it extremely high working speeds great operational reliability and long service life of the bending device can be achieved.
  • a bending device is characterized in that a bending template is provided in axial alignment with a bending tool carrier that can be driven in both directions about its axis for rotational movement, between a working position in which the end faces of the tool carrier and the bending template preferably touch, and one Rest position, in which these two end faces form a passage gap for a wire to be bent, can be displaced in the axial direction, and that a bending tool which is eccentric with respect to the common axis thereof and the bending template is arranged on the tool carrier, the end face of which with the end face of the bending template Rest position is at least approximately coplanar.
  • this design also makes it possible, with a length of the bending template that prevents the wire to be bent from sliding off with absolute certainty, to reduce the distances to be covered by the template to a value that is only slightly larger than the diameter of the wire to be bent is. Both measures together therefore allow a considerable increase in working speeds compared to the known devices.
  • wires When bending, wires often have the unpleasant property of moving sideways out of the plane of action of the bending moment.
  • the reason for this behavior is the fact that wires are almost never exactly round, but as a result of various influences exerted on them during manufacture (e.g. rolling, winding) and handling (e.g. unwinding and straightening) have slightly irregular cross-sectional profiles, the main radii of inertia of which are unequal in size. If a bending moment does not act on such a wire exactly in the plane of one of the two main axes of inertia, then the mentioned lateral deflection of the wire from the bending plane occurs.
  • a bearing block can be provided according to the invention in which the bending template is guided in an axially slidable manner and which has a surface designed as a support surface for the wire to be bent, which is at least approximately coplanar with the end face of the bending template in its rest position and which is a groove for receiving a wire crossing the wire to be bent at right angles, in particular a reinforcement grid.
  • the bent transverse wire end parts are not welded to the longitudinal edge wires, it is expedient to also secure the transverse wire end part against evasion from the plane of the longitudinal wires, which can be achieved within the scope of the invention in that the bending tool is attached to one is arranged with a drive shaft coaxial circular support plate which is rotatably connected to the shaft and whose end face facing the wire to be bent is at least approximately coplanar with the end face of the bending template in its working position.
  • the entire bending device in such a way that it can be displaced by limited amounts in the direction of the longitudinal grid wires.
  • Grids are often produced in which the cross-wire distances within one and the same grid are of different sizes.
  • the position of a bending station immediately downstream of the grid welding machine must be adapted to the different cross-wire divisions during operation of the grid welding machine.
  • the bending device according to the invention can be displaceably guided on rollers along rails and can be equipped with devices for manual or automatic displacement along the rails.
  • a device according to the invention works particularly cheaply when the transverse wire end parts are bent into loops in the opposite direction to the lattice feed. This is because in this case the grid feed can start immediately after the bending template has been withdrawn from a shaped wire loop, while the bending tool is being pivoted back into its starting position. This not only saves time because the completion of the bending movement of the bending plant Stuff does not have to be waited for, but in this case the bending tool also acts as a stopper limiting the feed path of the subsequent cross wire and fixing the wire in its starting position for the bending process.
  • the grid to be machined consists of longitudinal wires L and transverse wires Q, the end parts E of which protrude beyond the longitudinal edge wires are to be bent into loops S.
  • the bending device has a shaft 1 which can be driven in rotation about its axis XX in both directions and which, together with a lateral support arm or, as shown, a disk 5 attached on the end face serves as a carrier for the movable bending tool 4 and which, in axial alignment, has a bending template 2 , for example in the form of a mandrel with a circular segment cross-section (cf. the top views according to Figures 3 to 6), is opposite.
  • the bending template 2 is, expediently by means of a hydraulically or pneumatically driven piston 3, between a working position shown in FIGS. 1, 2 and 8, in which the end faces of the carrier disk 5 and the bending template 2 preferably touch, and a rest position shown in FIG. 7 , in which a gap allowing the passage of a cross wire Q is formed between the end faces of these two elements.
  • the bending tool 4 is mounted eccentrically with respect to the common axis XX of the shaft 1 and the bending template 2 on the circular support disk 5 coaxial with the shaft 1, which is rotatably connected to the shaft 1 and whose end face facing the grid with the end face of the bending template in it Working position is coplanar.
  • the end face of the bending tool 4 facing the bending template 2 is at least approximately coplanar with the end face of the bending template which is in the rest position, so that it can move over the longitudinal edge wire L of the grid during the bending process, as can be seen particularly clearly from FIG.
  • the shaft 1 is driven for rotation by a motor 6 which is only shown schematically, for example by a high-speed hydraulic motor via a worm and a worm wheel; However, a piston drive acting on a toothed pinion via a toothed rack is particularly recommended.
  • the bending template 2 is guided in an axially displaceable manner in a bearing block 7, the surface of which facing the grid is designed as a support surface for the grid transverse wires, a groove 8 for opening in this surface. Taking an edge longitudinal wire of the grid is incorporated.
  • This support surface is coplanar with the end face of the bending template in its rest position ( Figure 7).
  • the entire device on rollers 9 can be moved along rails 10, expediently likewise by means of a hydraulically driven piston 11, parallel to the grating feed direction, in order to be able to adapt their effective position to different cross wire divisions of the grid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
EP83890136A 1982-08-23 1983-08-19 Appareil à plier pour matériau en forme de fil ou de bande Expired EP0101675B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3190/82 1982-08-23
AT0319082A AT377713B (de) 1982-08-23 1982-08-23 Biegevorrichtung fuer draht- oder bandfoermiges material

Publications (3)

Publication Number Publication Date
EP0101675A2 true EP0101675A2 (fr) 1984-02-29
EP0101675A3 EP0101675A3 (en) 1984-04-25
EP0101675B1 EP0101675B1 (fr) 1986-11-12

Family

ID=3546742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83890136A Expired EP0101675B1 (fr) 1982-08-23 1983-08-19 Appareil à plier pour matériau en forme de fil ou de bande

Country Status (4)

Country Link
US (1) US4526025A (fr)
EP (1) EP0101675B1 (fr)
AT (1) AT377713B (fr)
DE (1) DE3367540D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508809A1 (de) * 1985-03-12 1986-09-25 Alpha Maschinenbau AG, Zürich Biegevorrichtung
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
WO1993001904A1 (fr) * 1991-07-17 1993-02-04 Evg Entwicklungs- Und Verwertungsgesellschaft M.B.H. Machine pour la confection de treillis constitues de fils metalliques longitudinaux et transversaux soudes ensemble
WO1993016825A1 (fr) * 1992-02-20 1993-09-02 Evg Entwicklungs- U. Verwertungs-Gesellschaft M.B.H. Procede et installation pour la fabrication de treillis soudes
CN106001317A (zh) * 2016-06-30 2016-10-12 中国五冶集团有限公司 一种钢筋弯曲机

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778439A (en) * 1987-06-18 1988-10-18 Peerless Machine & Tool Corporation Apparatus and method for forming a clamshell assembly
US5271260A (en) * 1992-06-16 1993-12-21 Oetlinger Tool Engineering Co., Inc. Bending device for forming carton blanking tools
US5697131A (en) * 1996-06-04 1997-12-16 Hunt; Gerald S. Money clip
GR1003857B (el) * 2001-02-22 2002-04-05 Μεθοδος και μηχανη παραγωγης οπλισμων απο συρμα ή μπετοβεργα
US20070095006A1 (en) * 2005-11-01 2007-05-03 Konersmann Ronald D Lightweight portable concrete enclosure and associated method of construction
US7832250B2 (en) * 2008-04-18 2010-11-16 L&P Property Management Company Method and apparatus for automating production of sinuous springs
GR1007955B (el) 2011-12-22 2013-08-19 Αντωνιος Παναγιωτη Αναγνωστοπουλος Μεθοδος και συστημα παραγωγης οπλισμου αρμων συστοδιαστολης φορεων νταουελ
CN104985055B (zh) * 2015-07-15 2017-12-01 成都天创精密模具有限公司 一种偏心轮折弯机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2215490A1 (de) * 1972-03-29 1973-10-04 Peddinghaus Carl Ullrich Dr Biegemaschine fuer insbesondere betonstahlstaebe
AT314319B (de) * 1972-04-12 1974-03-25 Evg Entwicklung Verwert Ges Biegemaschine für draht- oder bandförmiges Material
DE2613264A1 (de) * 1974-05-07 1976-10-28 Remigio Del Fabro Biegeeinrichtung mit einem zurueckspringend profilierten zentralen biegestueck fuer automatische biegemaschinen fuer draehte und staebe aus metall
CH592481A5 (en) * 1973-12-03 1977-10-31 Campagna Giuseppe Fixture for bending concrete reinforcement bars - has anvil and bending mandrel and crops bar after last bend

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2097193A (en) * 1936-11-04 1937-10-26 Emil Goetz Wire bending machine
DE925404C (de) * 1950-09-21 1955-03-21 P A Rentrop Akt Ges Maschine zur Herstellung von aus wellenfoermig gebogenem Draht bestehenden Flachfedern
US3273371A (en) * 1963-12-23 1966-09-20 Permaduc Inc Fabricating table
US3803893A (en) * 1971-08-17 1974-04-16 P Peddinghaus Process for multiple bending of rods and a bending machine for carrying out this process
IT976700B (it) * 1973-02-16 1974-09-10 Del Fabro M Complesso macchina piegatrice e o sagomatrice di barre metalliche dotata di unita operatrici e grup pi piegatori mobili
US4132100A (en) * 1976-04-07 1979-01-02 Schuler Jacob P Hand-operated tool for bending pipes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2215490A1 (de) * 1972-03-29 1973-10-04 Peddinghaus Carl Ullrich Dr Biegemaschine fuer insbesondere betonstahlstaebe
AT314319B (de) * 1972-04-12 1974-03-25 Evg Entwicklung Verwert Ges Biegemaschine für draht- oder bandförmiges Material
CH592481A5 (en) * 1973-12-03 1977-10-31 Campagna Giuseppe Fixture for bending concrete reinforcement bars - has anvil and bending mandrel and crops bar after last bend
DE2613264A1 (de) * 1974-05-07 1976-10-28 Remigio Del Fabro Biegeeinrichtung mit einem zurueckspringend profilierten zentralen biegestueck fuer automatische biegemaschinen fuer draehte und staebe aus metall

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508809A1 (de) * 1985-03-12 1986-09-25 Alpha Maschinenbau AG, Zürich Biegevorrichtung
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
WO1993001904A1 (fr) * 1991-07-17 1993-02-04 Evg Entwicklungs- Und Verwertungsgesellschaft M.B.H. Machine pour la confection de treillis constitues de fils metalliques longitudinaux et transversaux soudes ensemble
US5316052A (en) * 1991-07-17 1994-05-31 Evg Entwicklungs- U. Verwertungs-Gesellschaft M.B.H. Machine for making wire lattice mats of welded longitudinal and cross wires with welded end loops
WO1993016825A1 (fr) * 1992-02-20 1993-09-02 Evg Entwicklungs- U. Verwertungs-Gesellschaft M.B.H. Procede et installation pour la fabrication de treillis soudes
US5446254A (en) * 1992-02-20 1995-08-29 Evg Entwicklungs- U. Verwertungs-Gesellschaft M.B.H. Process and installation for producing reinforcement wire meshes
AT402033B (de) * 1992-02-20 1997-01-27 Evg Entwicklung Verwert Ges Verfahren und anlage zum herstellen von bewehrungsgittermatten
CN106001317A (zh) * 2016-06-30 2016-10-12 中国五冶集团有限公司 一种钢筋弯曲机

Also Published As

Publication number Publication date
US4526025A (en) 1985-07-02
EP0101675B1 (fr) 1986-11-12
AT377713B (de) 1985-04-25
DE3367540D1 (en) 1987-01-02
EP0101675A3 (en) 1984-04-25
ATA319082A (de) 1984-09-15

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