US3760851A - Device for forming a zig zag wire - Google Patents

Device for forming a zig zag wire Download PDF

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Publication number
US3760851A
US3760851A US00205547A US3760851DA US3760851A US 3760851 A US3760851 A US 3760851A US 00205547 A US00205547 A US 00205547A US 3760851D A US3760851D A US 3760851DA US 3760851 A US3760851 A US 3760851A
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United States
Prior art keywords
wire
discs
lattice
lever
wire bending
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Expired - Lifetime
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US00205547A
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English (en)
Inventor
H Gott
G Schmidt
K Ritter
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ENTWICKLUNGS U VERWERTUNGSG
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ENTWICKLUNGS U VERWERTUNGSG
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    • 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
    • B21F27/20—Making special types or portions of network by methods or means specially adapted therefor of plaster-carrying network
    • 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
    • B21F1/04—Undulating

Definitions

  • the invention is concerned with a device for forming a zig zag wire for a structural member such as a lattice girder.
  • the device comprises two circular discs which are mounted coaxially and spaced apart and are coupled together and driven so that they rotate constantly and synchronously in the same direction.
  • Each disc has distributed angularly around its periphery wire bending pins which project substantially radially from the rim of the disc.
  • Two pivoted wire bending levers oscillated in a plane parallel to the plane tangential to the discs in which in use the latticewire will be fed to the device.
  • Each lever has near its end a wire bending pin and is pivoted at a location near to a different one of the discs but outside the cylindrical space defined by the two discs.
  • the levers are driven so that they oscillate in alternation and each lever has a length such that when the lever is its extreme working position its end projects beyond the plane of the remote disc so that the lattice wire is first thrust by the wire bending pin of the one lever into the path of the wire bending pins of the remote disc to bend the wire which is subsequently bent, during the return strokes of the levers, by the pin of the other lever around a pin of the other disc.
  • Lightweight girders with parallel upper and lower flanges joined together by a zigzag bent wire web are used in large quantities nowadays for a variety of purposes.
  • a type of girder is widely used in which the lattice wire web occupies a single plane.
  • the flanges extend along over the peaks of the lattice wire zigzags, where the lattice wires are bent, or extend along on both sides of the peaks, symmetrically with respect to the plane of the lattice.
  • PATENTED SEPZSIQH sum 3 m4 DEVICE FOR FORMING A ZIG ZAG WIRE The invention relates to a device for forming a zigzag wire for the lattice of a girder or other structural member.
  • the lattice wire is bent into zigzag shape either by dies or by a toggle lever mechanism. In both cases the lattice wire advances intermittently, remaining stationary during the bending process. The entire operation is therefore intermittent, the wire being bent each time and then advanced a step.
  • A-further disadvantage of the known devices is that the bending tools are suitable only for producing lattice girders of specific dimensions. To convert the machine for producing lattice girders of different dimensions it is necessary to change the tools. The machine must therefore be equipped with easily exchangeable sets of tools.
  • the object of the invention is to provide a device which allows zigzag lattice webs to be produced from reels of wire by a continuous process.
  • such a device com prises two circular discs which are mounted coaxially and spaced apart, and which are coupled together and driven so that they rotate constantly and synchronously in the same direction, each disc having, distributed equiangularly around its periphery, wire-bending pins which project substantially radially from the rim of the disc; two pivoted wire-bending levers which oscillate in a plane parallel to the plane tangential to the discs in which in use the lattice wire will be fed tothe device, each lever having near its end a wire-bending pin and being pivoted at a location near to a different one of the discs but outside the cylindrical space defined by the two discs, the two levers being driven so that they oscillate in alternation and each lever having a length such that when the lever is in its extreme working position its end projects beyond the plane of the remote disc so that the lattice wire is first thrust by the wire-bending pin of the one lever into the path of the wire-bending pins of the remote disc to bend the wire which is
  • the device may be arranged so that it can easily be converted for producing lattice webs of different dimension without it being necessary tochange the bending tool.
  • the distance between the two discs and the distance between the pivotal axis and the wirebending pin of each lever may be continuously variable.
  • FIG. 1 ia an axonometric view
  • FIG. 2 is adiagram to illustrate the process by which the two wire-bending levers lay the lattice wire around the wire-bending pins of the two circular former discs;
  • FIG. 3 shows diagrammatically the mechanical drive connection between the two circular former discs and the wire-bending levers
  • FIG. 4 illustrates diagrammatically how the device can be adjusted for producing wire lattices of different dimensions.
  • FIG. 1 a lattice wire F is being fed to the device from a storage reel 10.
  • Two flange wires G are being fed from storage reels which are not shown in the figure.
  • the lattice wire F, coming from the storage reel 10, first of all passes through straightener devices 11, 11'.
  • the flanges wires G also pass through straightener devices, but these are not shown in the figure.
  • the guide 12 consists essentially of U- shaped guide bars 13 fixed to a baseplate, the lattice wire passing through the gap between the bars and the plate.
  • the arrangements for bending the lattice wire into zig-zag shape consist essentially of two circular former discs I4, 14, mounted coaxially and driven in rotation by a common drive.
  • Wire-bending pins l5, 15' are positioned equiangularly around the peripheries of the former discs, which are driven by a motor not shown in the figure.
  • the drive motor which drives the two former discs I4, 14 also drives two oscillating wire-bending levers l6, 16, the drive to these being transmitted by a mechanism which will be described further below.
  • the two oscillatory wire-bending levers 16, 16' are pivoted at A and A.
  • the working ends B, B of the levers are equipped with wire-bending pins 17, 17'.
  • the two wirebending levers 16, 16' oscillate in a plane parallel to the plane, tangential to the discs l4, 14, in which the lattice wire F is fed to the discs.
  • Each lever oscillates on an axis situated near the discs, but outside the cylindrical surface occupied by the disc peripheries.
  • FIG. 2 illustrates the process of bending and laying the lattice wire.
  • the wire-bending pin of the bending lever 16 follows a circular path, passing successively through the path points 0, l, 2, 3, 4.
  • a wire-bending pin of the disc 14 follows a circular path passing successively through the path points I', 2", 3", 4", and two neighbouring wire-bending pins of the disc 14' pass successively through the path points 1", 2", 3", 4" and 1', 2', 3', 4'.
  • the pin 17 ofthe lever 16 which is at this instant at the path point 1, is just making contact with the lattice wire F, which is already partly bent around the disc pin at the point 1" and entirely bent around the disc pin at the point 1
  • the lattice wire has not yet made contact with the disc pin at the point I.
  • a constant true distance between the path points 1 and 1", 2 and 2, 3 and 3 and so on, equal to the desired lengths of the lattice diagonal, at least with close approximation, is ensured by suitably choosing the distance between each pivot axis A, A and its former disc and by suitably synchronising the oscillations of the wire-bending levers l6, 16' with the rotational speeds of the discs l4, 14.
  • the path point 4 which corresponds to the extreme position of the lever 16, is below the plane of the lowest former disc 14'. This is the disc which is furthest away from the pivot point A of the lever 16.
  • the distance e between the path point 4 and the plane of the disc 14' is chosen in dependence on the elastic properties of the lattice wire F so that when the lever 16 moves away from the wire on its return stroke, the wire, rebounding elastically, forms the correct bend angle at the path point 4" to give the desired lattice slope angle.
  • the lattice wire F is supported by the wire-bending pins of the two diodes until it reaches the location on the disc peripheries where the flange wire G make contact tangentially with the discs. After the flange wires have made contact with the discs they are welded to the zigzag lattice wire, for example by means of two rotating disc electrodes 18.
  • the completed lattice girder leaves the discs tangentially and is straightened by three straightening rollers 19. Finally the continuously produced girder is cut into sections of specified length by a cut-off device 20.
  • the two former discs 14, 14' are driven in rotation by a driving shaft 21 which rotates in bearings 22.
  • the driving shaft 21 is driven through a gear train by the main motor of the device, neither of these parts being shown in the drawing.
  • Drive is transmitted through a worm 23 and worm wheel 24 to a shaft 26 which rotates in bearings 25.
  • the other former disc 14 is mounted on the shaft by a splined bearing 27 which allows the disc to slide along the shaft for the purpose of adjusting the gap between the discs.
  • the disc cannot however rotate relative to the shaft, and it can be locked in position.
  • By adjusting the distance between the discs lattice girders can be made having different specified diagonal lengths
  • the drive for the wire-bending levers is arranged as follows.
  • a bevel wheel 28 fixed to the driving shaft 21 drives a bevel wheel 29.
  • a crank pin 34 of the bevel wheel 29 drives a connecting rod 30 whose other end is pivoted by a pivot pin 33 to a triangular rocker 31, which rocks on a pin 32.
  • Rotation of the driving shaft 21 causes the triangular rocker 31 to oscillate on its pivot pin 32. This oscillation is transmitted through two driver rods 35 and 35, which are pivoted at the other two corners of the rocker, to the two wire-bending levers l6 and 16.
  • each wire-bending lever l6, 16' consists of a main lever arm 16a, l6a which oscillates on the lever axis A, A, and an adjustable lever arm 16b, l6'b, which supports at its end the wire-bending pin l7, 17.
  • the circular former disc 14 When it is desired to manufacture a lattice girder of greater height, the circular former disc 14 is brought into the position 14". This shifts the axis A of the wirebending lever 16 into position A".
  • the disc 14' mounted to slide along the shaft 26, is coupled to the axis of the lever 16' in such a way that the disc and the lever are shifted along together. This coupling is however not a necessary characteristic of the invention.
  • the device can if desired be arranged so that the dis-' tances between the axes A, A and the discs 14, 14' are adjustable.
  • the driver rods 35, 35 are long compared to the other parts of the driving mechanism for the wirebending levers 16, 16'. Consequently when the axis A is shifted to the position A" this makes hardly any change in the position of the lever 16' relative to the discs. Insofar as a change nevertheless does result, this can be compensated by adjusting the effective length of the adjustable lever arm l6b.
  • the wirebending pins 15, 15 are distributed over the peripheries of the discs 14, 14' in such a way that each pin on the one disc is opposite the middle point between two neighbouring pins on the other disc.
  • the stroking of the wire-bending levers is synchronised non-variably with the rotation of the discs. Consequently lattice girders can be made with zigzags of different amplitudes, by varying the gap between the discs.
  • the wavelength of the zigzag on the other hand, cannot be varied.
  • Device for forming zig zag wire for a structural member such as a lattice girder comprising two circular discs, means coaxially mounting said discs spaced apart, means driving said discs whereby said discs rotate constantly and synchronously in the same direction, wire bending pins equiangularly spaced around the periphery of each disc and projecting substantially radially therefrom, means feeding wire tangentially to said discs, two wire bending levers, means pivotally mounting said wire bending levers for oscillation in a plane parallel to the tangent plane to said discs in which said wire is fed thereto, a wire bending pin mounted at the end of each lever, said wire bending lever pivot means being at a location near to a different one of said discs but outside the space defined by the planes of said discs, and means driving said levers whereby said levers oscillate in alternation and at extreme working position of each of said wire bending levers, said wire bending pin at said end thereof lies beyond the plane of the remote
  • a device wherein the distance between the pivotal axis of each of said wire bending levers and said nearer disc, said driving means for each lever, and said driving means for said discs are related whereby during the period in which said pin of one of said wire bending levers is thrusting against said lattice wire, the distance between said last named lever pin and said pin of said nearer disc around said wire is being bent, is substantially constant and equal to the length of a diagonal'of said lattice.
  • said wire bending pin being mounted at the end of said adjustable lever arm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Transmission Devices (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Reinforcement Elements For Buildings (AREA)
US00205547A 1970-12-10 1971-12-07 Device for forming a zig zag wire Expired - Lifetime US3760851A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1113070A AT317648B (de) 1970-12-10 1970-12-10 Einrichtung zum zick-zackförmigen Verlegen eines Drahtes für eine Trägerausfachung od.dgl.

Publications (1)

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US3760851A true US3760851A (en) 1973-09-25

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US00205547A Expired - Lifetime US3760851A (en) 1970-12-10 1971-12-07 Device for forming a zig zag wire

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US (1) US3760851A (index.php)
JP (1) JPS4949287B1 (index.php)
AT (1) AT317648B (index.php)
BE (1) BE776313A (index.php)
CH (1) CH546105A (index.php)
DE (1) DE2159652C3 (index.php)
FR (1) FR2118039B1 (index.php)
GB (1) GB1358070A (index.php)
IT (1) IT941959B (index.php)
SE (1) SE386092B (index.php)
SU (1) SU431657A3 (index.php)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399843A (en) * 1980-10-20 1983-08-23 Sedgewick Richard D Zig-zag winding machine
US4509564A (en) * 1982-01-25 1985-04-09 Sedgewick Richard D Method for winding annular zig-zag windings
WO2000047347A1 (en) * 1999-02-10 2000-08-17 Structherm Ltd. Truss machine
US20020106265A1 (en) * 2000-11-29 2002-08-08 Mario Litsche Binding apparatus and method
US20040261256A1 (en) * 2003-06-27 2004-12-30 Sadik Sadiku Method and apparatus for introducing wave windings into rotor and stator lamination packets of electrical machines
US20040261885A1 (en) * 2003-06-27 2004-12-30 Sadik Sadiku Method and apparatus for forming wave windings for rotor and stator lamination packets of electrical machines
AT413342B (de) * 2003-08-27 2006-02-15 Evg Entwicklung Verwert Ges Verfahren und vorrichtung zum herstellen eines gitterträgers
US20070095006A1 (en) * 2005-11-01 2007-05-03 Konersmann Ronald D Lightweight portable concrete enclosure and associated method of construction
CN102389930A (zh) * 2011-10-13 2012-03-28 无锡威华电焊机制造有限公司 钢筋桁架腹杆筋打弯成形装置
US20140034182A1 (en) * 2011-02-17 2014-02-06 Michael Maier Device and method for manufacturing wire coils
CN109365674A (zh) * 2018-11-13 2019-02-22 广东电网有限责任公司 脚踏式拉线制作器
CN113118335A (zh) * 2021-03-09 2021-07-16 成都固特机械有限责任公司 桁架焊钢筋折弯装置
CN114160706A (zh) * 2021-12-09 2022-03-11 扬州京柏自动化科技有限公司 一种排线折弯机

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2234298C3 (de) * 1972-07-12 1981-08-13 The Mead Corp., 45463 Dayton, Ohio Verfahren und Vorrichtung zum Wellen von Draht
DE2340138C2 (de) * 1973-08-08 1982-08-05 Karl Zeller KG, 5400 Koblenz Verfahren und Vorrichtung zum Herstellen von Wellengittern aus Endlosdraht für Gitterträger
DE2908223C2 (de) * 1979-03-02 1982-12-02 Bielomatik Leuze Gmbh + Co, 7442 Neuffen Verfahren und Vorrichtung zur Herstellung eines zick-zackförmigen Bandes aus Draht
AT365486B (de) * 1979-08-03 1982-01-25 Evg Entwicklung Verwert Ges Maschine zum selbsttaetigen herstellen von geschweissten gittertraegern
EP3141314A1 (de) * 2015-09-09 2017-03-15 EVG Entwicklungs- u. Verwertungs- Gesellschaft m.b.H. Verfahren und vorrichtung zum herstellen eines kontinuierlichen gitterträgers
CN107052224B (zh) * 2017-05-19 2020-06-05 福建天广消防有限公司 一种钢丝装配自动折弯设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047717A (en) * 1934-01-02 1936-07-14 Van Dresser Specialty Corp Forming machine
US2188407A (en) * 1935-08-12 1940-01-30 Murray Corp Machine for forming springs
US2849031A (en) * 1955-10-07 1958-08-26 Universal Wire Spring Co Wire forming machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB792546A (en) * 1955-10-07 1958-03-26 Gen Motors Corp Improvements relating to wire-bending machines
US3352330A (en) * 1961-01-17 1967-11-14 Dominion Bridge Co Ltd Web bender for forming a continuous v-contoured web

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047717A (en) * 1934-01-02 1936-07-14 Van Dresser Specialty Corp Forming machine
US2188407A (en) * 1935-08-12 1940-01-30 Murray Corp Machine for forming springs
US2849031A (en) * 1955-10-07 1958-08-26 Universal Wire Spring Co Wire forming machine

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399843A (en) * 1980-10-20 1983-08-23 Sedgewick Richard D Zig-zag winding machine
US4509564A (en) * 1982-01-25 1985-04-09 Sedgewick Richard D Method for winding annular zig-zag windings
WO2000047347A1 (en) * 1999-02-10 2000-08-17 Structherm Ltd. Truss machine
US20020106265A1 (en) * 2000-11-29 2002-08-08 Mario Litsche Binding apparatus and method
US7281312B2 (en) * 2003-06-27 2007-10-16 Elmotec Statomat Vertriebs Gmbh Method and apparatus for introducing wave windings into rotor and stator lamination packets of electrical machines
US20040261256A1 (en) * 2003-06-27 2004-12-30 Sadik Sadiku Method and apparatus for introducing wave windings into rotor and stator lamination packets of electrical machines
US20040261885A1 (en) * 2003-06-27 2004-12-30 Sadik Sadiku Method and apparatus for forming wave windings for rotor and stator lamination packets of electrical machines
US7185414B2 (en) 2003-06-27 2007-03-06 Elmotec Statomat Vertriebs Gmbh Apparatus for forming wave windings for rotor and stator lamination packets of electrical machines
AT413342B (de) * 2003-08-27 2006-02-15 Evg Entwicklung Verwert Ges Verfahren und vorrichtung zum herstellen eines gitterträgers
US20070095006A1 (en) * 2005-11-01 2007-05-03 Konersmann Ronald D Lightweight portable concrete enclosure and associated method of construction
US20140034182A1 (en) * 2011-02-17 2014-02-06 Michael Maier Device and method for manufacturing wire coils
US9056350B2 (en) * 2011-02-17 2015-06-16 Robert Bosch Gmbh Device and method for manufacturing wire coils
CN103348572B (zh) * 2011-02-17 2016-06-29 罗伯特·博世有限公司 用于生产线材绕组的装置和方法
CN102389930A (zh) * 2011-10-13 2012-03-28 无锡威华电焊机制造有限公司 钢筋桁架腹杆筋打弯成形装置
CN102389930B (zh) * 2011-10-13 2014-02-05 无锡威华电焊机制造有限公司 钢筋桁架腹杆筋打弯成形装置
CN109365674A (zh) * 2018-11-13 2019-02-22 广东电网有限责任公司 脚踏式拉线制作器
CN109365674B (zh) * 2018-11-13 2024-04-12 广东电网有限责任公司 脚踏式拉线制作器
CN113118335A (zh) * 2021-03-09 2021-07-16 成都固特机械有限责任公司 桁架焊钢筋折弯装置
CN114160706A (zh) * 2021-12-09 2022-03-11 扬州京柏自动化科技有限公司 一种排线折弯机

Also Published As

Publication number Publication date
DE2159652A1 (de) 1972-06-22
DE2159652C3 (de) 1975-10-09
FR2118039B1 (index.php) 1975-02-07
IT941959B (it) 1973-03-10
BE776313A (fr) 1972-04-04
DE2159652B2 (de) 1975-03-06
CH546105A (de) 1974-02-28
JPS4949287B1 (index.php) 1974-12-26
SE386092B (sv) 1976-08-02
SU431657A3 (index.php) 1974-06-05
FR2118039A1 (index.php) 1972-07-28
AT317648B (de) 1974-09-10
GB1358070A (en) 1974-06-26

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