A method for ultrasonic welding stacked materials

摘要

A method and apparatus for joining multiple layers (26,28,30) of materials using an ultrasonic welding apparatus is disclosed. The ultrasonic welding apparatus utilizes a sonotrode (14) to perform a weld between at least the top and intermediate layer (26,28) of a multi-layer member (24). Then, either the multi-layer member (24) or the ultrasonic welding apparatus is rotated such that the bottom layer (30) is positioned adjacent the sonotrode (14) so that the sonotrode (14) can form a weld between at least the bottom layer (30) and intermediate layer (28) of the multi-layer member (24). The apparatus includes an ultrasonic welding gun having a C-shape frame (80) including a base portion (82) and a head portion (84). An ultrasonic welding device (95) including a sonotrode (112) is secured to the head portion (82) and an anvil (90) is secured to the base portion (84). The ultrasonic welding gun is connected to a robot operative to position and rotate the ultrasonic welding gun to perform the welding operation.