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9 measures to be done before high-speed injection molding machine：
1. Injection molding machine and mold protection
Before the injection molding machine is stopped, the mold should be opened to a distance of 5-10mm, so that the hinge (crank arm) mechanism of the clamping machine is in a semi-extended state, so that the hinge mechanism (crank arm) of the injection molding machine stays in an unstressed state State, better protect the mold and clamping mechanism.
2. Barrel cleaning
Before stopping the machine, clean the plastic in the barrel, and use one of PP, PS, PE to clean out the original plastic remaining in the barrel. After cleaning, loosen the screw stroke to the maximum stroke. This can prevent part of the screw head from being burned out when the temperature rises next time the machine is started.
Note: If the plastic used is colored, VO fireproof plastic, corrosive plastic, plastic with glass fiber, it can be washed out with one of PP, PS, PE. After the cleaning work is completed, the temperature of the material pipe can be directly turned off.
3. Drain the mold, barrel cooler, and hydraulic oil cooler
Turn off the power supply of the cooling water tower, water tower outlet pump, chiller equipment and mold temperature control equipment first, and then do the following four points of drainage protection work.
A. Close the water inlet and outlet valves of the hydraulic oil cooler of the injection molding machine, remove the water inlet and outlet pipe joints, and use the air gun of the air compressor to blow out (drain) the residual water inside the cooler to avoid rust or rust inside the water ring. Oxidation. In addition, the filter screen above the water inlet pipe of the oil cooler needs to be cleaned.
B. Close the water inlet and outlet valves of the mold (male mold/female mold), remove the water inlet and outlet pipe joints, and use the air gun of the air compressor to blow all the residual water inside the mold's water transportation system (drain out) to avoid the mold The mold core is rusty.
4. Maintenance of lubrication part
A. The lubrication of the mold adjustment mechanism is filled with difluidized molybdenum according to the machine maintenance requirements;
B. The hinge part is lubricated with thin oil (Sinopec Great Wall Rail Oil L-G150), the internal sediment of the electric lubrication pump needs to be thoroughly cleaned and the oil suction port filter of the oil pump is cleaned. Check whether the connecting oil pipes are crushed or damaged. . Be sure to do a manual lubrication test to observe whether the spool of each lubricating oil distributor pops up and resets, and whether the lubricating oil pipe is broken;
C. For the lubrication of the front plate of the injection station, the rear plate of the injection station and the melt drive shaft, lithium-based grease (3#) should be added as required.
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