Cindy@njprecisionengineering.com

Teach you how to keep the mold of precision plastic parts molding mold?

by:NJPE     2020-02-05
How to maintain the mold of precision plastic parts molding mold? NJPE tells you that the precision of the mold is maintained to maintain the precision of the mold under injection pressure and clamping force, when designing the mold structure, the suitability of grinding, polishing and polishing the cavity parts must be considered. Although the machining of the cavity and core has reached high precision, the shrinkage rate is the same as expected. Due to the center deviation during mold forming, the relevant dimensions of the inner and outer sides of the molded products are difficult to meet the manufacturing requirements of plastic parts. In order to maintain the dimensional accuracy of the dynamic and fixed model cavities in parting, in addition to setting the guide posts and guide sleeves commonly used in conventional molds, positioning pairs such as tapered positioning pins or wedge blocks must also be installed, to ensure the accuracy and reliability of positioning. Secondly, when selecting materials for precision injection mold processing, high-quality alloy tool steel with high mechanical properties and low thermal creep should be selected, mold materials for making cavities and runners should be made of materials with high hardness, good wear resistance, strong corrosion resistance and thermal deformation resistance after strict heat treatment, at the same time, the difficulty and economy of mechanical processing and electrical processing should also be considered. In order to prevent aging changes and change the dimensional accuracy of the mold, tempering treatment or low temperature treatment to reduce the residual austenite structure of the mold material heat treatment must be specified when designing the mold. Then in the case of fragile parts of precision injection mold, especially the vulnerable parts such as cavity and core, the possibility of repair should be considered in the design to keep the mold with high precision after maintenance. NJPE tells you that precision injection molding technology is the main and key production technology for car plastic parts, and the design of precision injection molding mold is the main part of this production technology, reasonable design of precision injection mold is the foundation and necessary premise to obtain precision products. By reasonably determining the size and tolerance of the mold, taking technical measures such as preventing shrinkage error, injection molding deformation, demoulding deformation, overflow, etc. of injection molded products, and ensuring the precision of the mold, the correct precision injection molding process, applicable engineering plastic materials and precision injection molding equipment are adopted to achieve the best matching, which is helpful to improve the quality, reliability and performance of car precision plastic parts, it is of great significance to reduce production costs and improve production efficiency. NJPE- World-class precision mold manufacturers, if you are interested in our precision injection mold products, please click on our injection mold manufacturing online customer service, welcome your call to inquire: NJPE- Advanced equipment and micron-level precision control make customers' products 'meticulous '. Enter NJPE official website https://www . njprecisionengineering. Com/learn more. Zhuhai NJPE independently develops equipment safety renovation technology. What are the manufacturing methods of NJPE for you?
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I am Cindy Fan,you please kindly send your inquriy to cindy@njprecisioenngineering.com ,I will send you quotation with 2 hours, or contact me at Skype Cindy-fan, Wechat 86-13813884518, and Whatsapp 86-13813884518,thank you!