The design of the cooling system is a relatively cumbersome job plastic injection mold, that is, to consider the cooling effect and cooling uniformity plastic mold, but also consider the impact of the cooling system on the overall structure of the mold. Arrangement and the specific form of the cooling system cooling system; cooling system of determining the specific location and size; key parts such as the movable die or the cooling insert member; cooling side slider and the side core; the design of the cooling element and the cooling criteria selection of components; seal design. Plastic mold our lives in Shenzhen plastic mold, plastic mold design for use in different industries, targeted design, easy operation, practical mold. Convenient, practical, good mold design structure will be more user-friendly to use, saves time precision plastic mold and improve efficiency. Inadequate application of the hot runner system (1) to increase the overall height of the mold is closed, due to the installation of the hot runner plate or the like, an increase in the overall height of the mold. (2) thermal radiation is difficult to control, hot runner runner biggest problem is the heat loss is a major issue to be resolved. (3) the presence of thermal expansion, thermal expansion and contraction is an issue to consider when we design. (4) increase in mold manufacturing cost, the higher the price of standard accessories hot runner system, affect the popularity of hot runner mold. Shenzhen, Foshan, plastic mold plastic mold _ _ Shun King Mold Ltd. provided by Liaobu Shun King mold. Liaobu Shun King Mold Ltd. (www.shunjingmuju.com/) strong, credible, in Dongguan, Guangdong mold equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shun King dies and you hand into the brilliant, for a better future!