Ultrasonic welding method for conductors

Abstract

An ultrasonic welding method for conductors is provided that is capable of suppressing occurrence of insufficient weld strength and a separation which may occur when terminals of a wires are ultrasonically welded. In a wire arranging step, wires are arranged in accordance with a predetermined arrangement. In a conductor moving step, conductors () are pressed in a predetermined direction by a grinding jaw (), and thereby relative positions among the conductors () are changed. In a first ultrasonic welding step, ultrasonic welding is performed on the conductors () in a state of being pressed by the grinding jaw (). In a second ultrasonic welding step, the pressing applied by the grinding jaw () is released, and ultrasonic welding is performed on the conductors ().