Process principle of injection molding: the principle of injection molding is to add granular or powdery raw materials into the hopper of the injection machine. The raw materials are heated and melted into a flowing state. Driven by the screw or piston of the injection machine, they enter the mold cavity through the nozzle and the pouring system of the mold, and harden and set in the mold cavity. Factors that affect the quality of injection molding: injection pressure, injection time, injection temperature.
advantage
1. The molding cycle is short, the production efficiency is high, and it is easy to realize automation.
2. It can form plastic parts with complex shape, accurate size and metal or non-metal inserts.
3. The product quality is stable.
4. It has a wide range of applications.
shortcoming
1. Injection molding equipment is expensive.
2. The structure of injection mold is complex.
3. The production cost is high and the production cycle is long, which is not suitable for the production of single piece and small batch of plastic parts.
4. Application scope of injection molding.
