Ultrasonic Welding Convertor
Ultrasonic transducer is the heart of the ultrasonic welding machine, is just like a car engine, high frequency electric energy of ultrasonic transducer is the ultrasonic generator output or magnetic energy is converted into the same frequency of mechanical vibration, ultrasonic transducer is divided into two kinds, one kind is, magnetostrictive transducer, the other is a piezoelectric transducer.
Classification of ultrasonic welding convertor
Ultrasonic transducer is the heart of ultrasonic welding machine. The design of ultrasonic transducer is directly related to the performance, stability and service life of welding machine. Most piezoelectric ceramic transducers on the market have many kinds according to different vibration modes, such as radial vibration mode, longitudinal vibration mode, composite shear vibration mode, thickness of vibration mode, etc. When welding plastic workpiece, ultrasonic plastic welding machine adopts longitudinal high-frequency vibration. After the workpiece surface melts under high-frequency vibration friction, the upper mold and the lower mold of the workpiece are welded and formed under pressure, so as to achieve the welding effect.
FAQ：
Q: Cause and Solution of Ultrasonic Welding Convertor Heating
1: The material heated by the weldment or ultrasonic wave, or the mold (die head) and horn will also heat after a long time of operation. These heat will be transferred to the transducer.
2: Since the power loss of the transducer itself cannot achieve 100% energy conversion efficiency, the energy lost will also be converted into heat.
3: The temperature rise will lead to the change of the transducer performance, which will gradually shift the optimal matching state of the transducer. More seriously, the temperature rise will lead to the deterioration of the piezoelectric ceramic chip performance. This makes the working state of the transducer worse and the temperature rise faster, which is a vicious circle. Therefore, we must provide good cooling conditions for the transducer, generally air cooling at room temperature. If necessary, cold air cooling can also be used. In normal use, the two causes of temperature rise are also normal. With good cooling conditions, there will be no major problems in use.
Q：The piezoelectric ceramic chip of the transducer of the Ultrasonic welding machine has exploded. How to repair it?
It can be repaired, but it is best to replace it with a new ultrasonic transducer
Q：What to pay attention to when welding Ultrasonic Welding Convertor
1) Do not use corrosive flux! It's best to use rosin!
2) The power of the electric soldering iron should not be too high! Within 50 watts!
3) Welding time should be fast! Don't burn off the coating!
4) Use flexible multi-core wire for leads! Don't be too rough! Pull off the welding surface!
Q：What is the relationship between the transducer power of an ultrasonic welding machine and the welding energy? What is the reason for the sudden decrease in power of the transducer?
The higher the power, the greater the welding energy. If the power suddenly decreases, there are several possibilities, one of which is that there is a problem with the matching between the transducer and the circuit. The second reason is that the transducer is broken, and the third reason is that the driver unit is broken. We need to investigate one by one.
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