What should be paid attention to when opening a plastic mold?

1. Post-processing of plastic mold materials is not required, because: the plastic is soft and does not require any special requirements such as hardness, and the heat treatment process may cause mold deformation.2. The cooling (water passage) in the mold is related to factors such as product size, shape, plastic properties, and pressure holding time. 3. The roughness level in the cavity of the mold must reach the "mirror level", otherwise the product will be difficult to demould, and the product will be damaged due to excessive force when it is ejected. There are standards for the roughness of positioning pins, mold surfaces and other parts. 4. The plastic mold must have sufficient rigidity, otherwise it will be deformed when the mold is clamped and kept under pressure, causing "flash". 5. The plastic mold should choose a reasonable exhaust position and its volume control. Otherwise, the plastic injection will be dissatisfied and the product will be "out of material". 6. The injection channel should be selected reasonably so that the material can reach every place evenly (the flow path is equal), and there must be enough storage to ensure that the plastic is replenished with plastic during the shrinking process. 7. The shrinkage coefficient of each material is different, and the mold must have a reasonable shrinkage rate. 8. Choose a reasonable demoulding method, choose a reasonable position and quantity of ejector pins, and ensure that the product is not damaged during the ejection process. 9. The fixing method of the mold and the injection molding machine should be reasonable, reliable and firm to prevent accidents caused by displacement during mold closing. And it should be easy to disassemble.