EP0037392B1 - 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
EP0037392B1
EP0037392B1 EP19810890054 EP81890054A EP0037392B1 EP 0037392 B1 EP0037392 B1 EP 0037392B1 EP 19810890054 EP19810890054 EP 19810890054 EP 81890054 A EP81890054 A EP 81890054A EP 0037392 B1 EP0037392 B1 EP 0037392B1
Authority
EP
European Patent Office
Prior art keywords
coulisse
magazine
another
welding
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.)
Expired
Application number
EP19810890054
Other languages
German (de)
English (en)
Other versions
EP0037392A2 (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 rods 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 lattice production up to the point of consumption, i. H. 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 receive 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 along with the crossbar they have gripped from their initial position a 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 being essentially parallel to the plane of the welding electrode s runs so that the cross rod can be held on the welding line by counter-movement of the welding electrodes and can thus be removed 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 the direction parallel to the plane of the welding electrodes of the lattice welding machine and guided to pivot about the beam axis is provided at the ends of the one-armed levers each consisting of two resiliently pressed against each other, jaws forming a jaw, and at one end of the bar an additional one-armed lever is provided, at the end of which is guided in a second link guide Roller 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 at an angle to the tracks of the first link guide, and the bar is when moving in the first Guide rollers guided guide rollers parallel to the level of the welding electrodes can be acted upon with a torque about the beam axis, by means of which the roller guided in the second link guide can always be pressed against the guide track of
  • 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 cross bars on the other To be able to remove 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 cross bars 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 direction of advance of the longitudinal bars are connected to the secondary side of a welding transformer 1.
  • Two adjacent, oppositely polarized busbars 2 are electrically separated from one another in the middle between two adjacent longitudinal bar feeders 3 by an insulating layer.
  • Lower, active electrodes 4 are arranged on the busbars 2 so that they can be adjusted and locked.
  • the longitudinal rod guides 3 are also adjustable and lockable on supports 5 which extend across the width of the machine. With this arrangement, the longitudinal rod distances can be changed and the electrodes 4 and the longitudinal rod guides 3 can 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.
  • a slot 21 is formed for receiving the cross bars, the opening width of which is also adjustable.
  • 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.
  • 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 which are guided in first link guides 42, are provided at the two ends of a further beam 40 which extends across the machine width.
  • One-armed levers 43 are arranged along the bar 40 so as to be adjustable and lockable. Spring tongues 44 abutting on these one-armed levers 43 form together with the one-armed levers 43 resiliently mutually movable jaws of a gripping pliers including a mouth 45 for receiving a cross bar 15.
  • 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 webs 50, 51 is larger in parts of their guide area than the diameter of the guide roller 52.
  • the guide roller 52 moves. therefore in these parts of the guide area of the link guide with play between the tracks 50 and 51.
  • the tracks of the link guide 49 also enclose an angle in parts of their guide area with the tracks of the first link guide 42.
  • the piston rod of a working cylinder 55 is articulated on one end of a two-armed lever 56 which is pivotably 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.
  • either such a drive device is provided at each end of the beam 40, with both drive devices having to be operated synchronously, or there is provided in the bearing 57 for the two-armed lever 56 a shaft that extends over the machine width and rotates with it is connected to the two-armed lever 56 and is connected on the opposite side of the machine in a rotationally fixed manner 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 in such a way that the guide roller 41 is moved downward in the first link guide 42, 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 opposite torques ensure that the guide roller 52 remains in contact with the guideway 50 during its entire downward movement.
  • the guide roller 52 In those areas in which the mutual spacing of the guide tracks 50, 51 is greater than the diameter of the roller 52, the guide roller 52 therefore lifts off the guide track 51 during the downward movement; the roller axis then moves on the path B 1 and the crossbar held in the jaw 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)

Claims (4)

1. Appareil destiné à alimenter une soudeuse de treillis en barres transversales, comportant un magasin de barres (16) incliné par rapport à l'horizontale et recevant les barres transversales d'alimentation (15) en une seule couche et parallèlement les unes aux autres, l'extrémité inférieure de ce magasin présentant une ouverture de sortie (23) permettant d'expulser la barre transversale inférieure (15) du magasin dans une direction perpendiculaire à celle de la couche de barres dans le magasin, ainsi que des ouvertures de passage opposées à cette ouverture de sortie pour les extrémités de leviers (30) qui expulsent la barre transversale du magasin, caractérisé en ce qu'au moins deux pinces (43, 44) montées à distance l'une de l'autre et couplées l'une à l'autre pour effectuer des mouvements cycliques sont prévues, les mors (45) de ces pinces se trouvant au début du mouvement cyclique en face de l'ouverture de sortie du magasin (16) de sortie qu'elles reçoivent la barre transversale (15) inférieure lors de son expulsion du magasin, et un dispositif d'entraînement et de guidage automatique (55-59, 41, 42, 48, 49, 52) pour les pinces (43, 44) est prévu et force celles-ci à effectuer un mouvement cyclique au cours duquel leurs mors (45) se déplacent avec la barre transversale (15) qu'elles maintiennent à partir de leur position de départ suivant un premier trajet (B 11) vers la ligne de soudage (L) entre les électrodes de soudage (4, 6) écartées l'une de l'autre, puis reviennent suivant un second trajet (B 22) dans la position de départ, la partie initiale du second trajet (B 22) étant essentiellement parallèle au plan (E-E) des électrodes de soudage (4, 6) de sorte que par un déplacement des électrodes de soudage qui les rapproche l'une de l'autre, la barre transversale (15) peut être maintenue sur la ligne de soudage (L) et peut ainsi être retirée des mors (45) des pinces (43, 44) en mouvement.
2. Appareil suivant la revendication 1, caractérisé en ce qu'au moins deux leviers à bras unique (43) parallèles l'un à l'autre et espacés l'un de l'autre sont prévus et sont calés sur une poutre (40) qui, par ses extrémités, peut se déplacer au moyen de galets de guidage (41) dans des premières glissières (42) dans une direction parallèle au plan (E-E) des électrodes de soudage (4, 6) de la soudeuse de treillis et est guidée de manière à pouvoir pivoter autour de son axe, les extrémités des leviers à bras unique (43) portant chacune une pince constituée de deux mâchoires (43, 44) formant entre elles un mors (45) et pressées élastiquement l'une contre l'autre et de plus un levier à bras unique supplémentaire (48) est prévu à une extrémité de la poutre (40), l'extrémité de ce levier portant un galet (52) qui est guidé dans une seconde glissière (49), les trajets (50, 51) de cette seconde glissière formant, au moins dans des parties de leur domaine de guidage, un angle aigu l'un avec l'autre et un angle avec les trajets des premières glissières (42) et la poutre (40) peut, lorsque les galets de guidage (41) guidés dans les premières glissières (42) se déplacent parallèlement au plan (E-E) des électrodes de soudage (4, 6), être soumis à l'effet d'un moment de rotation autour de son axe par lequel le galet (52) guidé dans la seconde glissière (49) peut toujours être pressé contre le trajet de guidage de la seconde glissière (49) associée à la direction de déplacement momentanée de la poutre.
3. Appareil suivant la revendication 2, caractérisé en ce que le mors (45) formé à l'extrémité de chaque levier à bras unique (43) par les mâchoires (43, 44) de la pince est avantageusement incliné par rapport à la droite reliant l'orifice d'entrée de ce mors à l'axe de la poutre sous un angle a dont la valeur et l'orientation sont les mêmes que celles de l'angle a inclu entre cette droite et le plan (E-E) des électrodes de soudage (4, 6) au moment où l'ouverture d'entrée de la fente (45) se trouve entre les électrodes de soudage (4, 6).
4. Appareil suivant la revendication 2 ou 3, caractérisé en ce que la poutre (40) peut être entraînée dans les premières glissières (42) à ses deux extrémités par des manivelles (59) coopérant avec des bielles (58) dans une direction parallèle au plan (E-E) des électrodes de soudage et simultanément, par le fait que les axes des bielles (58) et des manivelles forment un angle l'une avec l'autre, elle peut être sollicitée à l'encontre du moment de rotation imposé sur la poutre (40) à tout moment de son déplacement dans les secondes glissières de guidage (49).
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 EP0037392A2 (fr) 1981-10-07
EP0037392A3 EP0037392A3 (en) 1982-02-24
EP0037392B1 true 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)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
AT395229B (de) * 1989-05-24 1992-10-27 Evg Entwicklung Verwert Ges Gitterschweissmaschine
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

Also Published As

Publication number Publication date
ATA173680A (de) 1982-01-15
AT368045B (de) 1982-08-25
EP0037392A2 (fr) 1981-10-07
DE3162733D1 (en) 1984-04-26
EP0037392A3 (en) 1982-02-24

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