DEVICE FOR MULTIPLE ULTRASONIC WELDING, IN PARTICULAR OF LAYERED ELEMENTS

摘要

A device (1) for ultrasonic welding of layered elements (2) made of flexible material comprises a welding head (3) with a welding sonotrode (4) which includes a rotor (5) mounted on a supporting base (6), and contact means (40) which include sonotrode (4) contact wheels (7) on a head (3) upright (8). The sonotrode (4) and the contact wheels (7) being motor-driven so that they feed the layered elements (2) between them during welding. The sonotrode (4) contact wheels (7) are distributed along the periphery of the sonotrode (4) and in combination with a single rotor (5) form connecting zones (37) corresponding with as many layered element (2) ultrasonic welding zones.