| 摘要 |
Apparatus for semi- or fully automatic electrical resistance welding with a longitudinal seam and a transverse seam of can bodies in the form of overlapping rolled sheet metal edges 20, comprising a guide device, inserted in front of the weld point for fixing the overlap width of the edges 21, 22 with spring-loaded guide elements 32, 33, 34, by means of which the edges, as they are conveyed to the weld point, can be pressed in towards the groove base 29, 30 in a Z-shaped rail 13, and with a calibration ring 40 fitted in the welding area, and in which the guide device is designed so that the overlap width of the edges at the weld point is at most equal to six times the wall thickness of the can, and with wire electrodes 11, which are formed as flat wire electrodes with a width running out beyond the overlap width of the edges at the weld point. The Z-shaped rail 13 and the supporting of the wheel electrodes 7, 9 is simplified in that the groove bases 29, 30 in the Z- shaped rail 13 run parallel to one another, and that the axes of the wheel electrodes 7, 9 lie in a plane perpendicular to the welding direction. <IMAGE>
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