Ultrasonic welding system and method employing a reduced number of power supplies

摘要

An improved ultrasonic welding system and an improved ultrasonic welding method is disclosed herein. The welding system is specifically designed for enabling a single radio frequency power generator to provide a different tuned r.f. signal to each of a plurality of transducers. Each of the tuned r.f. signals is individually tailored to one of a plurality of transducer/booster/welding horn/workpiece assemblies for transmitting substantially optimized doeses of ultrasonic vibrations to a workpiece. This is accomplished by utilizing a plurality of turning coils, one of the tuning coils associated with one of the transducer/booster/welding horn/workpiece assemblies. By reducing the requisite number of radio frequency power generators, a substantial amount of money and space may be saved.