Use and maintenance of plastic mould

Plastic mold is a key special tool for forming plastic products. If the quality of the mold changes, such as shape change, position movement, rough forming surface, loose contact of clamping surface, etc., it will directly affect the quality of plastic products. Therefore, we should pay attention to the use and maintenance of plastic mold, mainly including the following points:

(1) Before production, check whether there are impurities in each part of the die. Dirt: the paint, impurities and dirt in the mold shall be scrubbed and removed with cotton gauze, and the residues with strong adhesion shall be cleaned with copper tools.

(2) The clamping force shall be reasonably selected, and the flash shall not occur during product forming. Excessive clamping force not only increases the power consumption, but also makes the die and transmission parts wear faster.

(3) The sliding parts of the die, such as guide post, push rod, reset rod and pull rod, can be oiled twice a day in summer and only once in winter.

(4) When the full-time mold preservation worker is on duty, he shall conduct patrol inspection and observation on the molds in production, and deal with the problems found in time. When the maintenance worker takes over the shift, he should go to work 5 ~ 10 minutes in advance to check the mold production status - especially for those molds that often have secondary scrap, and molds with more and more prominent problems should be paid more attention.

(5) In case of power failure or shutdown for some reason during production, if the machine is shut down continuously for more than 6 hours and the air is wet in the plum rain season in the south, it is necessary to spray antirust oil on the forming surface, parting surface and sliding surface. In case of continuous shutdown for more than 24 hours in non rainy season, anti rust lubricant shall be sprayed on the mold forming surface, parting surface and sliding mating surface. The molds that are not used temporarily and need to be stored in the warehouse shall be thoroughly cleaned before warehousing, and then sprayed with antirust lubricant. After closing the molds, they shall be stored in the warehouse. No heavy objects are allowed on the mold.

(6) It is not allowed to hit any part in the mold with a hammer to prevent knock marks or deformation.

(7) If the equipment is not used temporarily, the mould on the injection shall be coated with anti rust oil. It is not allowed to stay in the mold closing state with pressure for a long time between the moving and fixed molds to prevent compression deformation.