STRIP SEAM WELDING MACHINE

摘要

According to the present invention, a seam welding device comprises: an upper electrode and a lower electrode electric resistance welding a pre-material and a post-material; and an error correction unit moving the lower electrode in an axial direction to correct a deviation between the upper electrode and the lower electrode. The purpose of the present invention is to provide a seam welding device wheel alignment device which removes misalignment of the upper electrode and the lower electrode generated while the seam welding device is used.