Maintenance method of mold accessories (2)


5. Check whether there are signs of wear between the gu […]

5. Check whether there are signs of wear between the guide post and the guide sleeve. Look for signs of scratches or abrasions. This kind of mold parts wear is caused by lack of lubrication. If the marks just appear, then you can extend their life by adding lubricant to the guide posts and guide sleeves. If the wear is severe, new parts should be replaced. Otherwise, the cavity and core part may not fit well, resulting in different thicknesses of the cavity wall of the parts.
6. Check the water flow. Connect a hose at the outlet of the waterway, and let the water pass through the hose and stay in the bucket. If the water flowing out is not clear or has a color, rust may occur, and the water flow is not smooth, which means that there is a blockage. If you find these problems, drill through all the water pipes again (or take any method you use most to clean up) to ensure smooth flow. Improving the plant's water treatment system can prevent various problems caused by rust and clogging in the future.
7. Clean the thimble. After a year, the thimble will become very dirty due to gas accumulation and film impurities. It is recommended to clean it with mold cleaner every 6 to 12 months. After cleaning, apply a layer of lubricant to the thimble to prevent scratches or breaks.
8. Check whether there is a fracture in the radius area of ​​the hot nozzle. The fracture is caused by the loose and hardened plastic fragments remaining in the hot nozzle of the machine being subjected to the clamping force from the barrel assembly during forward injection. The cause of the problem may also be misalignment of the center line. When discovering a fracture, consider these two possibilities. If the damage has been severe enough to prevent petal-like leakage, the sprue sleeve should be replaced in time.

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