SECONDARY COIL FOR TRANSFORMER OF RESISTANCE WELDING MACHINE

摘要

PURPOSE: A secondary coil for a transformer of a resistance welding machine is provided to reduce the leakage of cooling water by forming a flow path of the cooling water that passes through a rolled copper plate. CONSTITUTION: A cutting unit(15) is formed on an end of a rolled copper plate by cutting the end with a predetermined depth. The cutting unit(15) divides the end into two parts. A cooling water path is provided on each of the center of the divided two parts deeper than the depth of the cutting unit(15). The two cooling water paths are connected to each other through a connecting pipe crossing the divided two parts. The size of the connecting pipe is identical to that of the respective cooling water paths. Both openings of the connecting pipe are closed and one of the divided two parts is bent in perpendicular.