ULTRASONIC WELDING DEVICE AND METHOD FOR ULTRASONIC WELDING

摘要

The invention relates to an ultrasonic welding device having a sonotrode (28) and an anvil (26), in which a flat part (2) and at least one joining part (10a) are arranged between the sonotrode (28) and the anvil (26) during ultrasonic welding, and wherein a fastening element (8a) is held in a positively locking manner between the flat part (2) and the joining part (10a). According to the invention, a damping element (22) that bears on the fastening element (8a) is provided, which bears on the fastening element (8a) in such a way that a relative movement between the fastening element (8a) and the flat part (2) and/or the joining part (10a) is restricted during ultrasonic welding.