AUTOMATIC WIRE-RELEASING DEVICE FOR WELDING ROBOT

摘要

A device for use with a welding robot is provided which is capable of automatically separating the welding wire from the work even if the wire is caught on the work at the end of a welding operation. When the welding is finished, a means for detecting the sticking of wire applies a predetermined voltage between the work and the wire for a predetermined period of time, and produces a signal indicative of the wire sticking when a current flows between them. In response to this signal, wire-releasing means applies a second predetermined high voltage between the work and the wire to melt the bond between them (S3, S7).