MULTI-POINT SPOT WELDING MACHINE AND WELDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a multi-point spot welding machine which can achieve cost reduction and space saving.SOLUTION: Provided are a holding stage 1 which positions one side workpiece W1, a workpiece setting device 2 which positions and sets another side workpiece W2 on the one side workpiece W1, welding electrodes 3a, 3b which are mounted at each side of the holding stage 1 and the workpiece setting device 2 so that both workpieces face each other and are contact-held with a specified pressure at each point of plural welding points P on both workpieces and form a pair for each welding point P, and an electrification gun 4 which contacts to one side welding electrode 3a mounted at the workpiece setting device 2 side among the plural pairs of welding electrodes and electrifies to weld mutually both workpieces W1, W2 between the other side welding electrode 3b forming a pair with it. Regarding the electrification wiring, although a number of wiring corresponding to the number of welding points is needed in the other side welding electrode side, one wiring connecting to the electrification gun is enough in the one side welding electrode side.