EP0037392A2 - Dispositif d'alimentation en barres transversales d'une machine à souder des treillis - Google Patents

Dispositif d'alimentation en barres transversales d'une machine à souder des treillis Download PDF

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Publication number
EP0037392A2
EP0037392A2 EP81890054A EP81890054A EP0037392A2 EP 0037392 A2 EP0037392 A2 EP 0037392A2 EP 81890054 A EP81890054 A EP 81890054A EP 81890054 A EP81890054 A EP 81890054A EP 0037392 A2 EP0037392 A2 EP 0037392A2
Authority
EP
European Patent Office
Prior art keywords
guide
magazine
welding
jaws
welding electrodes
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
EP81890054A
Other languages
German (de)
English (en)
Other versions
EP0037392B1 (fr
EP0037392A3 (en
Inventor
Hans Dipl.-Ing. Gött
Josef Dipl.-Ing. Dr. Ritter
Klaus Dipl.-Ing. Ritter
Gerhard 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 EP0037392A2 publication Critical patent/EP0037392A2/fr
Publication of EP0037392A3 publication Critical patent/EP0037392A3/de
Application granted granted Critical
Publication of EP0037392B1 publication Critical patent/EP0037392B1/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
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • B21F23/005—Feeding discrete lengths of wire or rod
    • 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
    • B21F27/08—Making wire network, i.e. wire nets with additional connecting elements or material at crossings
    • B21F27/10—Making wire network, i.e. wire nets with additional connecting elements or material at crossings with soldered or welded crossings

Definitions

  • the invention relates to a device for feeding crossbars to a grid welding machine, with a rod magazine which is single-layer and parallel to one another and which is inclined towards the horizontal, the lower end of which has an outlet opening for ejecting the lowest crossbar from the magazine in the direction perpendicular to the position of bars in the magazine and this outlet opening opposite passage openings for the ends of the cross bars levers protruding from the magazine.
  • a device of this type is described in DE-OS 21 34 886.
  • the rods conveyed out of the rod magazine are dropped over a shaft to the point of use.
  • this type of feeding the bars to the point of consumption a precise position of the bars at the point of consumption cannot be ensured.
  • the invention is therefore intended to solve the problem of the cross bars required for the production of the lattice up to the point of consumption, i.e. up to the point where they are welded to the longitudinal bars, lead through suitable transport elements and to be able to hold them there until they are gripped by the electrodes of the welding machine and welded to the longitudinal bars of the grid.
  • a device designed to achieve this object is characterized in that at least two gripping tongs which are arranged at a distance from one another and are coupled to one another for common cyclical movement are provided, the jaws of which are opposite the outlet opening of the magazine at the beginning of the cyclical tongs movement, so that they each take the lowest crossbar when ejecting it from the magazine, and that an automatic drive and guide device is provided for the pliers, which force them to perform a cyclical movement, in the course of which the forceps jaws with the crossbar they have detected from their initial position along one first path to the welding line between the welding electrodes which are at a distance from one another and then along a second path to the starting position, the initial part of the second path running essentially parallel to the plane of the welding electrodes, so that the cross rod can be held on the welding line by moving the welding electrodes against one another and thereby is removable from the jaws of the moving gripping tongs.
  • the kinematician has numerous options for the design of the drive and guide device on the basis of the movement conditions specified above, in particular using cam controls or link guides.
  • At least two one-armed levers arranged parallel to one another and at a mutual distance from one another are provided and are connected in a rotationally fixed manner to a beam which is guided at its ends by guide rollers in first link guides in a direction parallel to the plane of the welding electrodes of the lattice welding machine and pivotable about the beam axis is provided at the ends of the one-armed levers each consisting of two resiliently pressed gripping jaws forming a jaw between one another, and further an additional one-armed lever is provided at one end of the beam, at the end of which a roller guided in a second link guide is mounted, the tracks of this second link guide at least in parts of its guide area at an acute angle to each other and in Angle to the tracks of the first link guide, and when the guide rollers guided in the first guide guides move parallel to the plane of the welding electrodes, the beam can be subjected to a torque about the beam axis, by means of which the roller guided in the second guide guide always counteracts that of the current
  • the jaws of the gripping tongs receiving the cross bars are inclined in relation to the one-armed lever carrying the gripping tongs so that the mouth runs parallel to the plane of the electrodes at the moment when the gripping tongs are between the welding electrodes, then those in the electrode plane can be against the lower electrodes of the welding machine move the upper electrodes, the cross bar located in the mouth, as long as it is still sliding in the mouth and is thus precisely positioned in the desired position on the welding line relative to the longitudinal bars, press against the longitudinal bars, after which the gripping pliers initially in the level of the electrodes is removed from the supplied crossbar and the crossbar is pushed completely out of the mouth of the gripping tongs during this movement, after which the gripping tongs returns to their starting position.
  • the mouth formed at the end of each one-armed lever by the jaws of the gripping tongs is inclined by an angle relative to the straight line connecting the entry opening of this jaw to the beam axis, which is the same size and rectified as the straight line included with the plane of the welding electrodes at the moment Is the angle at which the mouth's entrance opening is between the welding electrodes.
  • the gripping tongs In order to convey the supplied cross bars unhindered from the upper welding electrodes into the area between the welding electrodes on the one hand and the supplied ones on the other To be able to remove crossbars from the jaws of the gripping tongs in the manner described, the gripping tongs, as already mentioned, must be moved in two separate ways from the transfer point of the crossbars at the outlet opening of the magazine into the area between the welding electrodes and back. The above-described formation of the second scenery guide serves this purpose.
  • the beam in the first link guides can be connected at both ends by cranks interacting with push rods in Direction parallel to the plane of the welding electrodes can be driven and at the same time be resilient by arranging the axes of the push rods and the cranks at an angle to one another counter to the sense of the torque exerted by the second link guide at every moment of their movement on the beam.
  • Busbars 2 oriented transversely to the feed direction of the longitudinal bars are connected to the secondary side of a welding transformer 1.
  • Two adjacent, oppositely polarized busbars 2 are in the middle between two adjacent longitudinal bar feeds 3 electrically separated from each other by an insulating layer.
  • Lower, active electrodes 4 are arranged on the busbars 2 so that they can be adjusted and locked.
  • the longitudinal bar guides 3 are also adjustable and lockable on supports 5 which extend across the machine width. This arrangement allows the longitudinal rod distances to be changed and the electrodes 4 and the longitudinal rod guides 3 to be aligned with one another.
  • the upper, passive counter electrodes 6 are also arranged on a current bridge 7, via which the welding circuit between two electrodes 4 is closed via two counter electrodes 6, in an adjustable and lockable manner.
  • the current bridge 7 is mounted on a pressure beam 8, which is moved up and down by the working cylinder 9 in the rhythm of the welding processes.
  • the cross bars 15 are guided in a bar magazine 16 in a single-layer, flat, parallel position inclined to the horizontal.
  • the rod magazine consists of lower guide plates 17a, upper guide plates 17b and lateral guide plates 18, which are all adjustable and fixable on beams 19, 20 which extend across the machine width, so that the magazine can be adapted to different crossbar lengths.
  • stops 22 are provided which prevent the cross bars from sliding out of the slot 21. Between the stops 22 and the lower ends of the upper guide plates 17b, an outlet opening 23 for pushing out the cross bars 15 from the bar magazine 16 remains open.
  • Levers 30 are adjustable and lockable mounted on a beam 31 extending across the machine width.
  • the beam 31 is in turn connected at its ends to one-armed levers 32 which are pivotally mounted in bearings 33 and can be pivoted by working cylinders 34. With a pivoting movement of the levers 32 in a counterclockwise direction (viewed in the direction of view of FIG. 1), the ends of the levers 30 push the bottom of the cross bars 15 located in the bar magazine out of the outlet opening 23 in the direction perpendicular to the plane of the bar position in the slot 21 from the magazine.
  • guide rollers 41 are provided, which are guided in first link guides 42.
  • One-armed levers 43 are adjustable and lockable along the bar 40.
  • Spring tongues 44 abutting on these one-armed levers 43 form together with the one-armed levers 43 resiliently movable jaws of a gripping pliers, which include a mouth 45 for receiving a cross bar 15 between them.
  • a further one-armed lever 48 at the end of which a roller 52 guided in a second link guide 49 is provided.
  • the tracks 50, 51 of the second link guide 49 do not run parallel to one another over their entire guide area, but instead form an acute angle with one another in parts of their guide area.
  • the distance between the tracks 50, 51 in parts of their guide area is greater than the diameter of the guide roller 52.
  • the guide roller 52 therefore moves in these parts of the guide area of the sliding block guide with play between the tracks 50 and 51.
  • the tracks close the link guide 49 also in parts of its guide area with the tracks of the first link guide 42 an angle.
  • the piston rod of a working cylinder 55 is articulated on one end of a two-armed lever 56 which is pivotally mounted in a bearing 57.
  • a push rod 58 is articulated, which in turn is articulated on a crank 59.
  • the crank 59 is rigidly connected to the beam 40.
  • both drive devices having to be operated synchronously, or a shaft extending over the machine width is provided in the bearing 57 for the two-armed lever 56, which shaft rotates with it is connected to the two-armed lever 56 and is connected in a rotationally fixed manner on the opposite machine side to a further one-armed lever, to which a second push rod 58 is articulated, which in turn interacts with a second crank 59.
  • the push rods 58 and the cranks 59 form angles with one another. If, in the exemplary embodiment shown in FIG. 2, the working cylinder 55 is acted upon with pressure medium such that the guide roller 41 is moved downward in the first link guide 42, then a torque is exerted clockwise on the crank 59 with respect to the axis of the beam 40. This torque pushes the guide roller 52 moving downward in the second link guide 49 against the guide track 50, the guide track 50, in cooperation with the roller 52, exerting a torque counterclockwise on the one-armed lever 48 with respect to the axis of the beam 40. These two opposing torques ensure that the guide roller 52 remains in contact with the guide track 50 during its entire downward movement.
  • the guide roller 52 In those areas in which the mutual distance between the guide tracks 50, 51 is greater than the diameter of the roller 52, the guide roller 52 therefore lifts during the downward movement from the guideway 51; the roller axis then moves on the path B 1 and the crossbar held in the mouth 45 of the gripper is guided on the path B 11 between the electrodes 4, 6.
  • the gripping tongs are moved a short distance in the plane E-E of the electrodes 4, 6, the cross bar held by them being held in place by the individual lowered electrodes 4 and thus being removed from the jaws 45 of the gripping tongs moved back.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
EP19810890054 1980-03-31 1981-03-30 Dispositif d'alimentation en barres transversales d'une machine à souder des treillis Expired EP0037392B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT173680A AT368045B (de) 1980-03-31 1980-03-31 Vorrichtung zum zufuehren von querstaeben zu einer gitterschweissmaschine
AT1736/80 1980-03-31

Publications (3)

Publication Number Publication Date
EP0037392A2 true EP0037392A2 (fr) 1981-10-07
EP0037392A3 EP0037392A3 (en) 1982-02-24
EP0037392B1 EP0037392B1 (fr) 1984-03-21

Family

ID=3519889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810890054 Expired EP0037392B1 (fr) 1980-03-31 1981-03-30 Dispositif d'alimentation en barres transversales d'une machine à souder des treillis

Country Status (3)

Country Link
EP (1) EP0037392B1 (fr)
AT (1) AT368045B (fr)
DE (1) DE3162733D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333663A1 (fr) * 1988-03-18 1989-09-20 H.A. Schlatter Ag Dispositif sur une machine de soudage pour l'alimentation de fils à souder à des pièces, notamment un dispositif d'alimentation de fils transversaux sur une machine de soudage de treillis et procédé d'alimentation de fils à souder à une pièce
FR2643671A1 (fr) * 1989-02-28 1990-08-31 Bedaricienne Tuilerie Procede et machines pour distribuer automatiquement le long d'un banc de prefabrication de dalles en beton arme ou precontraint des armatures transversales regulierement espacees et pour les fixer aux armatures longitudinales
US5113915A (en) * 1989-05-24 1992-05-19 Evg Entwicklungs- U.Verwertungs-Gesellschaft M.B.H. Grid welding machine
DE19732955C1 (de) * 1997-07-31 1999-03-11 Jaeger Emil Gmbh Co Kg Aufnahmevorrichtung für Drähte in einer Gitterschweißmaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE418368C (de) * 1924-04-20 1925-09-04 Hilgeland Fa Geb Bolzenabgratmaschine
US2987081A (en) * 1956-08-20 1961-06-06 Lath Corp K Machine
DE1253215B (de) * 1962-05-11 1967-11-02 Steine Maschine zum Herstellen von geschweissten Drahtgittern
AT252692B (de) * 1964-07-08 1967-03-10 Evg Entwicklung Verwert Ges Geradführungsvorrichtung, insbesondere zum Zuführen der Querstäbe bei Gitterschweißmaschinen
DE1947144A1 (de) * 1969-09-18 1971-03-25 Harry Gensch Zubringeinrichtung fuer eine Drahtgitterschweissmaschine
DE2134886A1 (de) * 1971-07-13 1973-02-01 Harry Gensch Drahtstabzufoerderer fuer eine gitterschweissmaschine
CS165549B1 (fr) * 1973-03-26 1975-12-22

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333663A1 (fr) * 1988-03-18 1989-09-20 H.A. Schlatter Ag Dispositif sur une machine de soudage pour l'alimentation de fils à souder à des pièces, notamment un dispositif d'alimentation de fils transversaux sur une machine de soudage de treillis et procédé d'alimentation de fils à souder à une pièce
CH674718A5 (fr) * 1988-03-18 1990-07-13 Schlatter Ag
FR2643671A1 (fr) * 1989-02-28 1990-08-31 Bedaricienne Tuilerie Procede et machines pour distribuer automatiquement le long d'un banc de prefabrication de dalles en beton arme ou precontraint des armatures transversales regulierement espacees et pour les fixer aux armatures longitudinales
US5113915A (en) * 1989-05-24 1992-05-19 Evg Entwicklungs- U.Verwertungs-Gesellschaft M.B.H. Grid welding machine
DE19732955C1 (de) * 1997-07-31 1999-03-11 Jaeger Emil Gmbh Co Kg Aufnahmevorrichtung für Drähte in einer Gitterschweißmaschine

Also Published As

Publication number Publication date
EP0037392B1 (fr) 1984-03-21
EP0037392A3 (en) 1982-02-24
AT368045B (de) 1982-08-25
DE3162733D1 (en) 1984-04-26
ATA173680A (de) 1982-01-15

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