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What is the reason why the ultrasonic welding machine does not emit waves

In the process of ultrasonic welding, silent waves occasionally occur. Then, what causes the ultrasonic plastic welding machine to not produce silent waves?

For example, try to replace the mold with a welding machine, or even try to replace the ultrasonic generator, to reduce the problem step by step. In the practical application of ultrasonic welding machine, there is no ultrasonic output, so welding is impossible

Also, please don't panic. First of all, you should judge whether it is your debugging problem or the problem of the machine itself. Test the no-load current, the current is normal, it is your debugging problem. If the current is normal, the ratio of air pressure and welding time needs to be judged.

If the current is overloaded or the current is too large, if the debugging fails, the mold can be removed to judge.

Ultrasonic welding machine silent wave self-check method:

Artificial setting problem
1. Start the device and adjust to automatic mode;
2. Check whether the welding time is 0s, 0s will not produce a waveform, readjust the welding time;
3. Check whether the delay time is too long. If the setting time is too long, no waves will be generated before the wave-making time is reached in our test. It is necessary to modify the delay time to see if a wave is generated.
4. Check whether the connection of the ultrasonic transducer is normal. The ultrasonic transducer is in a state of up and down movement for a long time, and the connection line is easy to disconnect. Please remove the cover for inspection;
5. Observe whether there is overload during welding. If the machine is overloaded at the moment of welding, you will definitely feel that there is no wave.

Ultrasonic equipment problem
If there is no sound wave in the ultrasonic welding machine, first remove the mold, and then check whether there is sound wave and whether the sound wave is normal. If there is no sound wave, check whether the current pointer is swinging, if the pointer is swinging, check whether the vibrator line is off. If all the above are checked, but it is still unavailable, then it is a problem with the ultrasonic generator. For example, the ultrasonic crystal plate is damaged, the rectifier bridge is damaged, the ultrasonic transducer is damaged, the vibrating plate is damaged, and the capacitor is damaged. This phenomenon will happen. If the sound wave is not adjustable, you can replace the electronic parts for repair

When using an ultrasonic welder, the maintenance of the ultrasonic welder is also very important. If the maintenance is good, the frequency of failure will be less, otherwise it will affect the service life of the ultrasonic welding machine and increase the frequency of maintenance.