The problem of ultrasonic plastic welding machine not waving can be caused by a variety of reasons. Ultrasonic welding is a process that uses ultrasonic vibration energy to generate heat at the contact surface to achieve the joining of plastics or other weldable materials. When the ultrasonic welding machine does not wave, it does not produce the required ultrasonic vibrations, which may cause the welding process to fail.

Here are some common reasons why the ultrasonic plastic welding machine may not emit waves:
Power supply problem: unstable power supply or power supply voltage that does not meet regulations may cause the welding machine to not work properly. Check the power cord and power plug to ensure that the power supply is stable and reliable.
Transducer failure: The transducer is the core component of the ultrasonic welding machine. It is responsible for converting electrical energy into mechanical vibration energy. If the transducer is damaged or malfunctions, it will directly affect the generation of ultrasonic waves.
Generator (drive circuit) failure: The generator is responsible for generating electrical signals of a specific frequency to drive the transducer to work. Any generator failure or parameter setting error may cause the wave not to be emitted.

Damage to the microphone or welding horn: The microphone or welding horn is the component that transmits ultrasonic energy to the welding point. If these components are damaged or worn, it may lead to insufficient energy transmission.
Improper setting of the parameters of the ultrasonic system: If the operating frequency, power and other parameters of the ultrasonic welding machine are not set properly, it may also lead to no wave. Correct parameter setting is essential to ensure the normal operation of the welding machine.
Loose mechanical parts: If the mechanical parts inside the ultrasonic welding machine, such as screws, clamps, etc., are loose, it may affect the transmission of ultrasonic waves and the welding effect.

To solve this problem, you first need to conduct a comprehensive inspection of the ultrasonic plastic welding machine to determine the fault. In many cases, this may require professional equipment and knowledge. For the various possible causes mentioned above, the corresponding solutions may include but are not limited to replacing damaged parts, re-adjusting parameter settings, tightening loose parts, etc. Before making any repairs or adjustments, be sure to disconnect the power supply to ensure safety.