1. The post-processing of the chair mold material is not required, because the plastic is soft and does not require special requirements such as hardness, and the heat treatment process may cause the mold to deform.
2. The cooling (water passage) in the chair 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 demold, and the product will be damaged due to excessive force when it is ejected. The roughness of positioning pins, clamping surfaces and other parts are all regulated by standards.
4. The plastic mold must have sufficient rigidity, otherwise it will deform when the mold is closed to maintain the pressure, causing ”flash”.
5. The plastic mold should choose a reasonable exhaust position and its volume control. Otherwise, it will cause dissatisfaction with plastic injection and product ”shortage”.
6. The injection channel should be selected reasonably, so that the material can reach each place evenly (the flow path is equal), and there should be enough storage to ensure that the plastic is supplied with the plastic during the shrinking process.
7. The shrinkage coefficient of each material is different, and the chair mold must have a reasonable shrinkage rate.
8. Choose a reasonable demoulding method, choose a reasonable position and quantity of ejector pins, to ensure that the product is not damaged during ejection.
9. The fixing method of the chair mold and the injection molding machine should be reasonable, reliable and firm to prevent accidents caused by displacement when the mold is closed. And to be easy to disassemble.
Post time: Nov-22-2021