Maintenance and maintenance of electrical system of automatic hot-melt welding machine

Update:14 Feb 2022

Because the fully automatic heat fusion welding machine […]

Because the fully automatic heat fusion welding machine needs to work in a very harsh environment, and often uses different types of power generation equipment and power sources, and may work with other electronic equipment at the same time, the equipment is not immune to electrical failures. In the process of using the automatic hot-melt welding machine, the maintenance of the equipment should be done well.

Electrical equipment maintenance

The connection plugs and sockets between the heating plate and the control box, and the connection parts between the frame signal frame and the frame must be kept dry. Be sure to check your computer for damage to the touch panel and for loose or damaged switches.

Troubleshooting methods:
The common faults of automatic hot-melt electrical systems include component aging faults, unexpected faults and human faults. The highest aging failure rate is the hot plate and the milling cutter; the highest accidental failure rate is the rack; the highest artificial failure rate is the hot plate milling cutter; the failure rate of the control part is relatively accidental damage.

If you suspect that there is a problem with the electrical control of the welding machine, you first need to check whether the input voltage displayed on the input voltmeter is normal. Then do other inspections and maintenance.

Circuit Troubleshooting:
Use the method of segmented voltage troubleshooting (if the power supply of the power board is abnormal, you need to unplug the power socket first, measure whether the voltage on the connector is normal, then insert the power board, unplug the output connector of the power board, measure the socket voltage is normal, etc.).

Necessary electrical inspection and maintenance tools
Use a multimeter
Use a multimeter to measure resistance:
Turn the multimeter to any resistance gear, touch the two ends of the measured object with two probes, and read directly from the display. If it shows "1", it means the range is too small, so you need to add a lot of distance after the measurement. Select the appropriate gear according to the reading, and the final data can be read.

one. For DC voltage measurement, such as 0-8.5v, 24V, etc., first insert the black probe into the "com" hole, and the red probe into the "VΩ". Select the knob to a range larger than the estimated value (note: the value above the dial is the maximum range, "V" - "represents the DC voltage range", "V" represents the AC voltage range, "A represents the current range", then connect the probe To both ends of the object to be measured, keep the contacts stable. The value can be read directly from the display. If it shows "1", it means that the measurement range is too small, so you need to add a lot of range before measurement. If the value A "-" appears on the right side, which means that the polarity of the probe is opposite to that of the actual power supply, and the red probe is connected to the negative pole.

2. AC voltage measurement. The probe socket is the same as for DC voltage measurement, but the knob should be set within the range required by the AC gear "V~". There is no difference between positive and negative AC voltage, and the measurement method is the same as the latter one. Whether measuring AC voltage or DC voltage, pay attention to personal safety and do not touch the metal part of the probe with your hands.