Patent ID: 8314356

Claim:
Spot welding cap changer with a cap extractor and two cap magazines the cap extractor having a gripper with spring-loaded, pivoting jaws which in response to a turning and axial extraction movement detaches a spot welding cap (K) of a pincer spot welding head inserted into the pivoting jaws from a shaft of the pincer welding head in such a way that caps are clamped to prevent the twisting of the caps, and the cap magazines holding spot welding caps respectively in a cap carrier in such a way that the spot welding caps are circularly arranged in a directed and oriented manner and are one by one transported by an advancing force (P) against a stop, into an access position allowing to attach the spot welding caps axially to the free shaft of the pincer and to extract them with the shaft of the pincer, characterized in that the cap extractor has two opposed grippers, each with jaws that are open at their ends and can be rotated towards each other with approximately parallel toothed grip surfaces a distance smaller than a diameter of a spot welding cap (D or K), and each cap magazine contains a cap carrier, the cap carrier, driven by a spring box, pressing one of the caps respectively by way of an advancing force (P) against the stop, and in the access position a rim overlap overlaps the cap (K) on one side.