ULTRASONIC WELDING METHOD

摘要

PROBLEM TO BE SOLVED: To improve the joining strength of a work to be welded, in particular, the adhesion strength in the ultrasonic welding to join an electric connection part such as a single-core cable, a stranded cable, and a copper foil. SOLUTION: A joining part W in which a copper foil part 21 Is stacked on a stranded cable 31 is incorporated in a groove of a resin case C1. The groove is provided with a through part, and in the through part, the copper foil part 21 is stacked on the stranded cable 31, and the stacked part W is held between a welding tip 11 at the tip of a welding head 12 and an anvil 2, and welded. The joined part W of the copper foil part 21 and the stranded cable 31 is bitten in the part of the resin case C1 which is softened with the welding heat. The joined part W is bonded not only by the joining with the welding but also by the solidified resin.