Cooling system cooling system is to control the mold temperature. Molding mold temperature has an impact on the quality and efficiency of the plastic molded article, when the high mold temperature, the melted plastic material of good fluidity pp filter, which facilitates rapid filled cavity pp, thereby obtaining a high quality product. But the temperature is too high plastic material curing time lengthened, while the top of the process is easily deformed. When the mold temperature is low, the fluidity of the plastic material will deteriorate, the material is difficult to fill the mold cavity, leading to increased internal stresses and surface gloss of the molded article is poor, prone to crazing and weld marks and other defects. To understand the mold temperature is too high and too low to the product's pros and cons, the only reasonably be seen mold temperature in order to ensure product quality stability. Different plastic materials with different techniques, appearance requirements and structure of each product is different, in order to be able to produce products that meet the quality requirements of the products in the shortest period, the mold temperature is very important. The more stable mold temperature, the higher the quality of its size and appearance after injection products. Bolt and moving mold fixing plate with the need to stay at 0.5? 1011X1 clearance height limit is usually set at 10? Between 1,501,111, designed to avoid the need to empty the bolt head bolt limit structure. Also known as junk nail screw stopper, die pads, mounted on the movable mold mounting plate pp glue, whose role is to prevent the fixed plate from sticking together thimble in the entire process of opening and closing the mold in contact with the movable mold plate fixed plate, of course, can also play a role in limiting. Hexagon head bolts often used as a substitute junk nails as shown in Figure 2-126. The use of a single species is more pp plastic cups, generally ^ 110X20 and 1 ^ 112X20 two forms. Number garbage nail according to the following factors may be: return pin spring in the mold, the main spring to the ejector plate, slider mechanism to provide power and other active components, generally not used alone. This section describes the return spring pin, pp synthetic paper, Gary trade (certified), pp big waves provided by the Shenzhen Municipal Trade Co., Gary. Shenzhen Gary Ltd. (www.pft-trading.com) Guangdong Shenzhen, a leader in engineering plastics, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Gary leadership in trade with the staff warmly welcome all inquiries negotiations to create a better future for Gary trade.