Ultrasonic welding apparatus with cooling for oscilator arrangement

Abstract

The invention relates to a sonotrode arrangement (3) for an ultrasonic welding apparatus (1). The sonotrode arrangement comprises an oscillator arrangement (4) and a cooling device (15). The cooling device has at least one heat sink (17). The heat sink is held within the cooling device such that it can be reversibly moved between a support position, in which a contact surface (19) of the heat sink rests against a contact surface (21) of the oscillator arrangement, and a remote position, in which the contact surface of the heat sink is away from the contact surface of the oscillator arrangement.