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High-speed injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment for making thermoplastic or thermosetting plastics into various shapes of plastic products using plastic molding dies. Divided into vertical, horizontal and all-electric. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it shoot out and fill the mold cavity. This article first introduces the schematic diagram of the composition of the injection molding machine, its working principle, and the operation cycle process. Secondly, it explains the four common problems and solutions of the injection molding machine. Finally, it introduces how to maintain and maintain the injection molding machine. Follow the editor to understand the details. .
(1) Non-locking treatment method:
1) Check the travel switch in front of the safety door and repair it
2) Check the 24V5A power supply in the electric box, replace the fuse and the power box.
3) Check whether the spool is stuck, and clean the spool.
4) Check whether the I/O board has output and whether the solenoid valve is energized.
5) Check whether the hydraulic safety switch is pressed and whether the mechanical lock lever baffle is open.
(2) Handling method for twisting of mold opening and closing machine:
1) Check whether the lubricating oil pipe is disconnected. If so, the oil pipe must be connected from the beginning.
2) The amount of lubricating oil is small, and the amount of lubricating oil is increased. It is recommended that 50 molds be oiled once or manually add enough lubricating oil.
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 amplifying board is adjusted in disorder, check whether the current parameters are suitable for the inspection standard, and adjust the current value from the beginning.
5) The parallelism is out of tolerance, use a dial indicator to check whether the parallelism of the first two boards is greater than the acceptance standard; adjust the parallelism.
(3) Wait a few seconds before opening the mold processing method:
1) The starting speed is slow, check whether the screw damping is too large, and adjust the screw damping hole.
2) The center hole of the damping screw is too large, check whether the damping of the Y-hole screw is too large, and replace the damping screw with a thin center hole.
(4) Crawling processing method of unlocking mold:
1) The second-plate guide rail and the coring post are worn out, check the second-plate guide rail and the coring post, replace the second-plate copper sleeve, the coring post, and add lubricating oil.
2) Improper adjustment of mold opening and clamping speed and pressure. Set flow rate of 20 and pressure of 99. The second plate of mold clamping should not crawl. Adjust the flow proportional valve hole or pilot valve hole and adjust the linear current value of the proportional valve.
3) There is air in the pipes and cylinders, and exhaust.
(5) How to deal with the mold opening:
1) Supplement the opening and clamping speed, the pressure flow is too small and not adjusted properly, check the opening and clamping speed, whether the pressure is appropriate, add the opening and clamping pressure and speed.
2) The zero position of the mold-locking electronic ruler is changed, check whether the mold-locking straightening machine ends at the zero position after twisting, and adjust the zero position of the electronic ruler from the beginning.
3) Check whether the hinge is reversed.
(6) In automatic production, mold adjustment will become tighter or looser. Processing method:
1) Internal leakage of the mold adjustment solenoid valve, check whether the solenoid valve is "O" type, model 4WE6E or 0810092101, replace the solenoid valve or whether the solenoid valve has 24V power when it is not working.
2) Check whether there is any mold adjustment action during other actions manually, and check whether the valve is stuck.
(7) The processing method of automatic and slow opening of the mold for other actions after the mold is locked:
1) Leakage of the oil control plate, check or replace the express clamping valve, and replace the oil control plate.
2) If the mold opening valve leaks, start the oil pump and terminate the mold clamping. Press the injection platform or glue injection to see if the second plate moves back, and replace the mold opening oil valve. Normally, it does not move when opening and locking the mold.
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