Injection molding machine common problems and solutions (1)

2019-01-28

1, No mode-locking
1) Check the stroke switch of safety door and repair it.
2) Check the 24V5A power supply in the electric box and change the insurance and power supply box.
3) Check if the valve plug is stuck and clean the valve plug.
4) Check if the I/O board has output and whether the solenoid valve is energized.
5) Check if the hydraulic safety switch is pressed and the mechanical lock lever is open.
2, Machine squeaking when opening and closing
1) Check if the lubricating oil pipe is disconnected. If it is, the oil pipe must be reconnected.
2) If the amount of lubricating oil is small, increase the amount of lubricating oil, it is recommended to make 50 shots and oil once or manually add enough lubricant.
3) The clamping force is large, check whether the mold requires a large clamping force, and reduce the clamping force.
4) The current of the amplifier board is adjusted, check whether the current parameters meet the acceptance criteria, and re-adjust the current value.

5) the parallelism is out of tolerance, use the dial indicator to check whether the parallelism of the first two plates is greater than the acceptance criteria; adjust the parallelism.

3, Wait a few seconds to open the mold
1) The starting speed is slow, check if the screw damping is too large, and adjust the small screw damping hole.
2) The middle hole of the damping screw is too large. Check if the damping of the Y hole screw is too large, and change the damping pin of the center hole.
4, Hard to open the mold
1) Increase the speed of opening the mold, the pressure flow is too small, adjust the speed of the mold, check whether the pressure is appropriate, and increase the pressure and speed of the mold.
2) The zero-position of the clamping electronic ruler is checked. Check whether the clamping die straightener is terminated at the zero position and re-adjust the electronic ruler zero position.
3) Check if the hinge is reversed.
5. In the automatic production, the mold adjustment will become tighter or looser.
1) The internal leakage of the solenoid valve, check whether the solenoid valve is “O” type, replace the solenoid valve or whether the solenoid valve does not work with 24V. 
2) Whether there is mold adjustment action when manually playing other actions, and see if the valve is stuck.

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