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These points must be paid attention to when injection mold
Many small partners asked which points must be paid attention to when making injection molds. Today, Shanghai Proni will take you to see which points must be paid attention to when making injection molds!
1. The shrinkage coefficient of each material is different, and the injection mold needs to have a reasonable shrinkage rate.
2. The injection mold needs to have sufficient rigidity, otherwise it will deform when the mold is closed and compressed, causing "flash.
3. If the product is pushed out while opening the mold, the thimble page of the injection molding machine can be set.
4. We need to choose a reasonable demoulding method and a reasonable position and quantity of ejector pins to ensure that the product is not damaged during the ejection process.
The cooling in the injection mold is related to factors such as product size, shape, plastic properties, and pressure holding time.
6, the injection mold to choose a reasonable exhaust position and the amount of control. Otherwise, the bow | plastic injection is not satisfied and the product "lacks material"
7. The fixing method of injection mold and injection molding machine should be reasonable, reliable and firm, so as to prevent accidents caused by dislocation during mold closing. And to disassemble easily.
8. The injection mold moves with the injection molding machine together with the moving mold part without a return spring. The mold thimble plate and the machine thimble rod are connected together (commonly known as strong top).
9, the injection channel should be selected reasonably, so that the material can reach every place evenly, and there should be sufficient storage to ensure that the plastic is supplied during the shrinkage process.
10. The post-processing of the injection mold material is not required, because the plastic is soft, no special requirements such as hardness are required, and the heat treatment process may cause mold deformation.
11. The roughness level of the injection mold cavity needs to be "mirror level", otherwise the product is difficult to demold, and if the product is ejected with too much force, the product will be damaged.
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