Plastic ultrasonic welding machines, also known as ultrasonic welding or supersonic welding, both utilize ultrasonic vibrations to achieve material welding. Ultrasonic welding involves applying ultrasonic vibrations to the material interface at the joint of workpieces, converting vibrational energy into thermal energy to accomplish the welding of materials. Supersonic welding is a specific form of ultrasonic welding, primarily used for welding plastic materials. In supersonic welding, the frequency of ultrasonic waves typically ranges from 20 kHz to 70 kHz, and the thermal energy generated by vibrations rapidly melts the surface of the plastic material, forming a weld point. Therefore, supersonic welding is an application form of ultrasonic welding.