Method and apparatus for fabricating double-layer, welded grid bodies
AssigneeEVG Entwicklungs- u. Verwertungs-Gesellschaft m.b.H.
InventorsKlaus Ritter, Gerhard Ritter, Gerhard Schmidt, Anton Lassbacher
Life of this patent
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Abstract
A method and apparatus for fabricating double-layer, welded grid bodies which consist of grids located opposite one another and web wires holding these grids apart at a distance, in which method and installation, to fabricate grid bodies in the form of annular sections, the two grids, at a mutual distance corresponding to the desired thickness of the grid body, are moved forwards concentrically to one another and in a vertical position along concentric circular feed paths, and, after the web wires, fed from the outside of the path, have been welded, preferably in pairs, to the grids, the finished grid body is removed from the outside of the path.
Claims16
Method of fabricating double-layer, welded grid bodies, which are bent in a circular-arc shape and which have grids located opposite one another comprising longitudinal and cross wires crossing one another and welded at the intersections and of straight web wires which hold the grids apart at a predetermined mutual distance and are welded at each end to a wire of one of the two grids, in which method the grids are bent and are arranged at a distance from one another, whereupon the web wires are inserted from the outside of the grids into the intermediate space between the grids, and each web wire is welded to the adjacent wires of the grids, characterized in that, to fabricate grid bodies in the form of annular sections, the two grids, at a mutual distance corresponding to the desired thickness of the grid body, are moved forwards concentrically to one another and in a vertical position along concentric circular feed paths, and in that, after the web wires have been welded, preferably in pairs, to the grids, the finished grid body is removed from the outside of the path.
Apparatus for a method for fabricating double-layer, welded grid bodies which are bent in a circular-arc shape and which have grids located opposite one another having feed paths for grids located opposite one another, a grid feeding station allocated to the feed paths, and a web-wire feeding station which is arranged to the side of the feed paths and has web-wire feeding means whose wire feed routes run across the feed paths, in which arrangement, a welding device having welding tongs and intended for the welding of the free wire ends to one grid is provided on the other side of the feed paths in alignment with the wire feed routes, and a welding device having welding tongs and intended for welding the cut ends of the web wires to the other grid is provided on this side of the feed paths downstream in the feed direction, characterized in that the feed paths (6) in accordance with the bending radius of the grid body to be fabricated, are curved in a circular shape and are also arranged concentrically and have a common vertical axis, in that the grid feeding station (A) allocated to the feed paths is equipped with bending mechanisms (2a, 2b) for the two grids (3a, 3b), in that the web-wire feeding station (9) downstream from the grid feeding station (A) in the feed direction is arranged on the outside of the feed paths, in that the web-wire feeding station (9) as well as the welding devices (13a, 13b) are mounted in such a way that they can be pivoted towards and away from the feed paths, and in that a removal station (E) for the finished grid bodies is likewise provided on the outside of the feed paths.
Dependencies are inferred from the claim text.