Plastic industry is a vibrant industry of today.Usually, plastic is finalized the design through the mould and finally become products. There are many manufacturing methods in plastic mould.Such as injection,extrusion,deliver,Compression, rolling, hot forming and so on,where injection molding is one of the most commonly used , the most promising methods of forming in today's market.Therefore plastic injection mold has a large market demand. This paper mainly introduces the method and the process of the injecting mold designing. Firstly, It has introduced the position and function in the developing society of the plastic injecting mold’s making and designing, and analysied the structure of the plastic product,and also modified some parts of the structure .secondly, this paper introduce the concrete process of the plastic mold’s designing.Concrete design contents include:The injecting machine was chosen according to the product’s weight,the dividing surface was chosen according to the structure of the plastics and model the type of cent of the craft、taking out the organization of core and the outing organizations、pouring system、cooling system and resetting the system to carry on the detailed design towards modeling zero parts and sprinkling at the same time。In addition, return to design of plastics injected other zero parts of mold to carry on the simple design.Finally, the experience was elaborated after the design .
Key words: plastic mold injection molding dividing surface pouring system