Ultrasonic welding assembly, to weld plastics housings for electrical/electronic sensors, has a light beam from the sonotrode and a position detector at the workpiece holder for relative position correction

摘要

The ultrasonic welding assembly (1) has a sonotrode (5) mounted at a stack (2), and a facing holder (7) to take the workpiece holder (16) with the workpiece component (6) for welding. The relative positions of the sonotrode and the holder are registered during the welding at regular or uneven intervals, together with a system to position them according to their detected positions. The ultrasonic welding assembly (1) has a sonotrode (5) mounted at a stack (2), and a facing holder (7) to take the workpiece holder (16) with the workpiece component (6) for welding. The relative positions of the sonotrode and the holder are registered during the welding at regular or uneven intervals, together with a system to position them according to their detected positions to correct their alignments. The position setting can be mechanical, electrical and/or electromechanical, with the position correction triggered manually or automatically. A LED or laser diode (8) at the stack and/or sonotrode forms a light spot on the holder by a vertical light beam (15), and a position detector (9) registers the position of the light spot.