Custom Injection Cover Mold Prototype Shell Molding Plastic School Chalk Mould

Custom Injection Cover Mold Prototype Shell Molding Plastic School Chalk Mould There are many factors that affect injection mold structure and mold systems, mainly including the following aspects: 1. Cavity layout. The number and arrangement of cavities shall be determined according to the geometric structure of plastic parts, dimensional accuracy requirements, batch size, mold manufacturing difficulty, mold cost, etc. 2. Determine the parting surface. The position of parting surface shall be conducive to mold processing, exhaust demoulding and molding operations to ensure the surface quality of plastic parts. 3. Determine the pouring system (the shape, position and size of the main runner, runner and gate) and the exhaust system (the method of exhaust, the position and size of the exhaust slot). 4. Select the ejection method (ejector rod, pipe jacking, push plate, combined ejection), and determine the side concave treatment method and core pulling method. 5. Determine the cooling and heating methods, the shape and position of the heating and cooling groove, and the installation position of the heating element. 6. According to the injection mold material, strength calculation or empirical data, determine the mold part thickness, overall dimensions, overall structure and all connection, positioning and guide parts positions. 7. Determine the structural form of main molding parts and structural members. 8. Considering the strength of each part of the mold, calculate the working dimensions of the molded parts.

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