What do you know about precision injection molds?

by:NJPE     2020-02-07
China's precision injection molding began to develop in 1970s, when it was mainly in Hong Kong. The plastic industry and plastic machinery industry once occupied the main position of Hong Kong's overall industry. With China's reform and opening up, the plastics industry has achieved unprecedented development. The quality of the environment in the mainland has made up for the lack of resources in Hong Kong. Time has developed into today's society, and precision injection molds have penetrated into every corner of life, but how much do you know about precision injection molds? Today, Zhuhai NJPE precision mold will take you closer to the precision injection mold: precision injection mold structure-- A, forming parts: that is, what we usually call the front and rear die CORE, is also the part that is most closely related to the product; B. Gating system: the flow channel of molten plastic from the nozzle to the cavity can be divided into: mainstream channel, diversion channel, gate, cold material well, etc; C. Guiding system: determine the relative positions of the front and rear molds when the mold is closed. Generally, there are guide posts and guide sleeves. If necessary, the ejection part also needs to be positioned by the guide posts and guide sleeves; D. Demoulding structure: it is the device that pushes the plastic parts out of the mold, commonly used: thimble, top plate, cylinder, etc; E. Temperature regulation system: in order to meet the requirements of injection molding process on mold temperature, the cooling channels added to the front and rear molds; F. Lateral parting and lateral core pulling: when there is a structure of the rubber part that is inverted, that is, inconsistent with the demoulding direction, the line position must be used. The common forms are: Slider, inclined top, core pulling, etc; G. Exhaust structure: there are two common exhaust forms: exhaust groove and clearance of formed parts. In order to eliminate the air in the mold cavity during the injection molding process and the gas generated during the molding process, an exhaust groove is often set up on the parting surface. The principle of setting the exhaust tank is that the exhaust tank should be as large as possible without affecting the overflow and the front. The needles, thimbles and inserts are vented by the gaps of the molded parts. Classification of precision injection molds-- According to the structure: two-plate mold, three-plate mold according to the nozzle: large nozzle, point nozzle, hot water mouth precision injection mold practical scope-- Precision injection molds are used for thermoplastics such as ABS, PP, PC, POM, etc. , while thermosetting plastics such as phenolic plastics and epoxy plastics use rubber molds. NJPE is leading the industry in hard and soft power such as precision injection mold processing equipment and testing equipment, CAE/CAD/CAM technology, and full-automatic information management. Looking forward to your call to the cooperation hotline: 0756- 8593098, or directly click on the online customer service consultation! Enter NJPE official website https://www . njprecisionengineering. Com/learn more. Zhuhai precision mold factory details the development status and prospect analysis of China's mold industry in 2015 NJPE tells you three types of precision injection molds
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