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Abstract Now The plastics industry is one of the growing quickest industry classes in the world, but the injection mold is develops the quick type. Therefore, There have biggist significance to research injection mold to understood that the plastic of production process and improve the product quality.

¡¡¡¡¡¡¡¡¡¡¡¡This design introduced the basic principle of injection molding, specially single is divided the profile to inject mold's structure and the principle of work, That proposes the basic design principle of products; Introduced the details of the system that are cold flow channel injection of mold gating¡¢the temperature control system and the design process of going against system, and has given the explanation to the mold intensity request;

¡¡¡¡¡¡¡¡¡¡¡¡Through this design, may to cast the mold to have a preliminary understanding, notes some certain detail questions in design, understands the mold structure and the principle of working.

Key Word The plastic Mold  Parting Line  Standard