Summary of maintenance experience of ultrasonic spot melting machine

Due to improper use or due to the ultrasonic melting machine itself, it is inevitable that there is a failure, so in this case, what should we do? How to make maintenance simple and more efficient? Xiaobian summarizes some basic principles of maintenance of ultrasonic spot welder for your reference:

1. Start before you start
For the faulty ultrasonic spot welder, do not rush to repair, should first ask the fault before and after the process and fault phenomenon. For the ultrasonic spot welder is not very familiar with, but also familiar with the circuit principle and structural characteristics, comply with the corresponding rules! Before disassembly, we should be fully familiar with the function, position, connection mode of each electrical component and the relationship with other devices around. In the case of no assembly diagram, we should disassemble while drawing a sketch and write a superscript to facilitate the follow-up work and avoid mistakes.

2. Exterior before interior
Before maintenance, should first check the maintenance of the ultrasonic spot welder has no obvious maintenance history, ultrasonic welding condition, ultrasonic mold temperature, service life and so on, and then check the machine. Before disassembly, the surrounding fault factors should be eliminated, and the internal fault of the ultrasonic spot welder should be determined before disassembly. Otherwise, blind disassembly may repair the equipment more and more bad.

3. Mechanical before electrical
First of all, you should first eliminate the problems of the ultrasonic mold, and then carry out the electrical inspection. When checking the circuit fault, the detection instrument should be used to find the fault location. After confirming that there is no bad contact fault, the operation relationship between the circuit and the machinery should be checked accordingly to avoid misjudgment.

4, first static dynamic
When the equipment is not powered on, first judge the quality of electrical equipment buttons, contactors, relays and fuses, so as to determine the location of the fault. Power test, listen to its sound, touch, measure parameters, determine the fault, and finally repair.

5. Clean before repair
For the heavily polluted ultrasonic spot welder, first clean its buttons, wiring points and contact points, and check whether the external control keys are out of order. Many faults are caused by dirt and dust too much and electricity, once the cleaning fault will often be eliminated.

6, the first power amplifier board after the equipment
The failure rate of the power amplification part of the ultrasonic spot welder accounts for a high proportion in the whole ultrasonic equipment, so the first maintenance of the power amplification part of the ultrasonic generator can often get twice the result with half the effort.

7. General before special
Faults caused by the quality of assembly parts or manufacturing process generally account for about 50% of the common faults. The fault of ultrasonic equipment is hard fault more, the examination that WANTS CAREFUL CLEAR ELIMINATES A PROBLEM TO JUST EASILY BOOT experiment.

8, the periphery before the interior
Do not rush to replace the damaged electrical parts, and then consider replacing the damaged electrical parts when you confirm that the peripheral circuit is normal.

9. Fault before debugging
In SOME cases, all the damaged parts have been replaced, but they are still abnormal, which requires checking the debugging of the ultrasonic spot welder protection system. Current protection, frequency protection, the premise is that the frequency modulation inductor must be in the right position, if it deviates from the normal position too far, in the process of debugging may damage the power amplifier board, before debugging must be inductor rotation to the normal position.