Common Fault Diagnosis and Handling Methods for Molding Machines

1. Low Pressure Alarm
1.1 Check if there are foreign objects inside the mold.
1.2 Check if the low-pressure pressure setting is appropriate.
1.3 Check if the mold adjustment distance is appropriate.
1.4 Check if the low-pressure setting position is accurate.
1.5 Ensure the machine's action sequence is correct; in manual mode, close the mold first, then advance the injection unit.

2. Insufficient Plasticating Volume:
2.1 Check if the barrel is empty of raw material or if the feed port is blocked.
2.2 Check if heating of each section of the barrel is normal.
2.3 Check if the barrel cooling water is turned on.
2.4 Check if the screw speed is normal.
2.5 Check if the plasticating protection time setting is normal.

3. Abnormal Temperature:
3.1 Check if the upper and lower temperature limit settings are correct.
3.2 Check if the thermocouples are loose or damaged.
3.3 Check if the heating elements are short-circuited or burned out.

4. Excessively High Oil Temperature:
4.1 Check if the cooling water valve is open or if the water passage is blocked.
4.2 Check if the oil temperature thermocouple is loose or damaged.

5. Abnormal Ejector Pins:
5.1 Check if the ejector pin speed and pressure settings are correct.
5.2 Check if the ejection distance is set too long.
5.3 Check if the rear limit proximity switch is functioning normally.
5.4 Check if the ejector pin fixing screws are loose.
5.5 Confirm if the electronic scale origin position is normal; perform a single origin reset if necessary.
The above are common faults and handling methods for molding machines.