Common troubleshooting of wave soldering flux spray system
2021-05-10 Classify: FAQ Author: GrandSeed Browse: 2203
The failure of wave soldering spray system is also the two phenomenon. One is the wave soldering nozzle without spray. Below, Guangsheng De Lai will share with you the conditions and troubleshooting of normal spray for wave soldering nozzle.
1、 Elimination method of wave soldering without left and right action
The conditions of normal left and right movement of wave soldering nozzle are as follows:
1. The inlet sensor is normal; 2. The chain speed sensor is normal; 3. The starting action sensor of nozzle is normal; 4. The travel control sensor is normal; 5. All control relays are normal; 6. The solenoid valve operates normally; 7. The system circuit is normal; 8. The PLC control circuit operates normally; 9. The air supply is normal.
Inspection method of whether the wave soldering nozzle moves left and right:
1. The entrance sensor and chain speed sensor are mostly photoelectric sensors. The normal inspection method is to make the sensor sense the signal by hand or other objects, and then confirm whether the corresponding input signal indicator of PLC is on. If the light is on, it means that the sensor circuit is normal.
2, (1.3 to 1.6) project confirmation: turn off the gas source, open the manual spray switch, and push the cylinder piston movement with the hand. When the sensor reaches the sensor position, the sensor will get the signal output voltage to control the relay action, and then the electromagnetic valve will act. At this time, if you touch the solenoid valve with your hand, you will feel the vibration generated by its contact closing or releasing (you can also hear the sound of contact action). If the action of the solenoid valve is normal, this part of the condition is OK.
3. For PLC control circuit, the voltage can be detected by multimeter. You can also use the exclusion method to confirm that if the 1 or 2 sensors and lines are normal, if the manual spray OK is automatically sprayed on NG, then the PLC control system will be abnormal.
4. For the confirmation of system circuit and gas source items: use a multimeter or visual inspection.
Wave soldering spray system
Two. The method of excluding and checking the spray welding nozzles.
Normal spray conditions for wave soldering
1. The air pressure is normal; 2. The regulating range of liquid volume regulating valve is moderate; 3. The control part of thimble works normally; 4. The running space of thimble is well lubricated; 5. The tin water supply channel is normal.
Inspection and exclusion of wave soldering without spraying
It is easy to find and eliminate the abnormal causes of Wuxi water gushing phenomenon, but in order to carry out the work smoothly, do a good job in daily preventive maintenance and confirmation work, and try to avoid the occurrence of this kind of fault phenomenon, is one of the key work of our grassroots technical personnel.