Ultrasonic plastic welding machine is mainly used for the second welding of plastic products that can not be formed once. The frequency and power of ultrasonic plastic welding machine are determined according to the size, shape and material of plastic products. Principle of ultrasonic plastic welding, high frequency signal generated by the generator that can by changing the system, the signal is converted to high-frequency mechanical vibration, and on the plastic workpiece, through the surface and inner friction between the molecules and make the conduction to the temperature of the interface, when the temperature reaches the melting point of the workpiece itself, the workpiece welding mouth melting quickly, and then fill in the space between the interface, When the vibration stops and the workpiece is cooled and shaped under a certain pressure, the welding is completed. Mainly plastic welding, riveting, spot welding, strip, embedding, forming, vibration cutting and other applications.