BMW 5 Series Door Handle Plastic Mould
Understand these three knowledge points before injection molds
1. In-depth study and analysis of injection mold structure problems and related technical development requirements. The structure of the plastic part can determine the complexity of the injection mold structure. The technical enterprise requirements of the plastic part (dimensional accuracy, surface roughness, etc.) determine the difficulty of the injection mold manufacturing and molding process. Special education requirements of injection molding, unreasonable structure and shape, etc., should be clearly proposed to improve the teaching design of injection parts, otherwise it will increase the difficulty of injection mold design and manufacturing and injection molding process.
2. Familiar with the technical specifications of injection molding machines. There are many types of molds and the same is true for equipment. Therefore, different injection molding machines should be selected according to different molds.
3. Understand the processing performance and process performance of the plastic, including the flow line of the plastic melt. The melt can reach a larger flow distance ratio: analyze the flow resistance of the entire runner and cavity, and discharge the original air in the mold cavity, and the injection mold The plastics in the plastic may have crystallization, orientation and internal stress, plastic cooling shrinkage and compensation problems, and plastics have temperature requirements for injection molds.