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Plastic molds are the key special tools for forming plastic products. If the quality of the mold changes, for example, the shape changes, the position moves, the molding surface becomes rough, and the contact of the mold clamping surface is not strict, it will directly affect the quality of the plastic product. Therefore, we must pay attention to the use and maintenance of the mold.
The main points are as follows:
(1) Before production, check whether there are impurities in each part of the mold. Dirt, the paint, impurities and dirt in the mold should be scrubbed and removed with cotton gauze, and the residue with a strong bond should be cleaned up with copper knives.
(2) Choose the clamping force reasonably, based on the fact that there is no flash when the product is formed. Excessive clamping force not only increases power consumption, but also easily accelerates the wear rate of the mold and transmission parts.
(3) Mould sliding parts such as guide posts, push rods, reset rods, pull rods, etc., should be oiled twice a day in summer and only once in winter.
(4) When a full-time mold preservation worker is on duty, the molds in production shall be inspected and observed rovingly, and the problems shall be dealt with in time. The maintenance worker should be on duty 5-10 minutes before taking over to check the mold production status-especially for those molds that often have inferior products, and molds with more problems and more prominent, you should pay more attention to them.
(5) During production, if there is a power outage or shutdown due to some reasons, if the machine stops continuously for more than 6 hours, in the rainy season in the south, the air is humid, and it is necessary to spray anti-rust oil on the molding surface, parting surface, and sliding surface. If the machine stops continuously for more than 24 hours in the non-rainy season, it is necessary to spray anti-rust lubricant on the mold forming surface, parting surface, and sliding mating surface. Moulds that are not in use temporarily and need to be put in the warehouse should be thoroughly cleaned before being put into the warehouse, and then sprayed with anti-rust lubricant, and the moulds will be put into the warehouse after being tightened. No heavy objects are allowed on the mold.
(6) Do not hit any parts in the mold with a hand hammer to prevent knock marks or deformation.
(7) The equipment is temporarily not used, and the mold on the injection should be coated with anti-rust oil. The movable mold and the fixed mold are not allowed to be in a pressure-clamped state for a long time to prevent deformation under pressure.
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