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Through a transistor function equipment will be the 50 / 60Hz frequency shift into 20kHz or 40KHz to high frequency electric power supply to the converter. Converter converts the electric energy into energy for mechanical vibration of the ultrasonic and pressure regulating device responsible for changing the transmission of mechanical energy to ultrasonic welding machine welding head. The horn is a direct transfer to the acoustic device need pressing product mechanical vibration. Vibration through the welding work piece to the adhesive surface vibration friction generated heat to melt, vibration will be in the molten state material to reach its interface to stop, transient hold pressure can make the melt adhesive surface curing time, the whole cycle is usually less than a second kind of complete, but the welding strength is close to the material