For products with complex shapes, the design of injection molding precision mold faces many difficulties.
First, the complexity of product shape directly increases the difficulty of mold structure design. Complex shape means that the mold may need multiple sliders, inclined tops and other core pulling mechanisms to realize product demolding. The design of these mechanisms requires accurate calculation of motion trajectory and stroke to ensure that there is no interference with the product during the injection molding process, and at the same time, the product can be smoothly removed from the mold during demolding. For example, for products with internal undercut structures, it is necessary to design a reasonable slider mechanism to ensure that the slider can be accurately positioned during mold closing and can slide smoothly during demolding, which requires careful design of the slider's guidance, drive and other aspects.
Secondly, products with complex shapes put forward higher requirements for the design of the mold cooling system. A good cooling system can ensure that the product is evenly cooled during the injection molding process, thereby reducing the deformation and internal stress of the product. However, for products with complex shapes, the arrangement of the cooling channel of the mold becomes more difficult. Due to the irregular shape of the product, the cooling channel needs to be bent and distributed according to the shape of the product to ensure the uniformity of the cooling effect. At the same time, it is also necessary to consider the interference between the cooling channel and other structures of the mold, as well as factors such as the flow resistance of the cooling medium.
Furthermore, products with complex shapes often require higher precision for molds. During the mold manufacturing process, it is necessary to ensure the dimensional accuracy and assembly accuracy of each part to ensure that the mold can fit tightly when the mold is closed to avoid quality problems such as flash and shrinkage. For molds with complex shapes, the processing difficulty of parts increases, and high-precision processing equipment and processes, such as CNC machining and EDM, are required. At the same time, the assembly of the mold also needs to be more refined, and each part needs to be strictly tested and debugged to ensure the overall accuracy of the mold.
In addition, products with complex shapes may also have special requirements for the material selection and surface treatment of the mold. Due to the complex shape of the product, the mold may be subjected to greater pressure and friction during the injection molding process, so it is necessary to select mold materials with high strength and high wear resistance. At the same time, in order to improve the surface quality and demolding performance of the product, the mold may need to be subjected to special surface treatment, such as chrome plating, nitriding, etc.
In short, for products with complex shapes, the design difficulties of injection molding precision mold mainly lie in mold structure design, cooling system design, precision control, material selection and surface treatment. Designers need to consider these factors comprehensively and adopt advanced design concepts and technical means to design high-quality Injection molding precision mold.
