PRESSING DEVICE FOR ROLL SPOT WELDER

摘要

PURPOSE: A pressing device for a roll spot welding machine is provided to prevent cracks or fractures in a welded area caused by the spring back of a roll-formed beam by pressing both sides of the welded portion with a plurality of pressing rollers. CONSTITUTION: A pressing device for a roll spot welding machine comprises a pressing frame(61), a lower pressing unit(70), and an upper pressing unit(80). The pressing frame is installed on a base(9) corresponding to the rear side of a spot welding machine. The lower pressing unit is arranged in a processing direction in the lower side of the pressing frame and installed on the base. The lower pressing unit supports a welded portion(W) of a roll-formed beam(30) by roll-contact with the underside of the welded portion. The upper pressing unit is arranged in the processing direction in the upper side of the pressing frame and installed on the top of the pressing frame. The upper pressing unit supports the welded portion by roll-contact with the top of the welded portion.