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Taizhou Union Plastic Mould Co.,Ltd

ADD:No.26, MaoFeng Street, Beicheng Development Area, Huangyan Dist., Taizhou, Zhejiang, China

Post Code: 312080

Contact:Ms vicky






Main Points Of Injection Mold Design Are Introduced
Aug 01, 2018

       Plastic injection mold is now the most widely used plastic mold of all molds, to forming complex high precision plastic products of this paper is just a rough introduce that chain structure, the plastic shrinkage when processing direction is also with polymer molecular chain under the effect of stress orientation and cooling contraction, on the flow direction of contraction than the vertical direction on the shape of a multi-product contraction with products also gate heat bilges cold shrink temperature holding time and the internal stress related books usually provides a wide range of shrinkage rate, in the practical application is considering the wall thickness of the product Structure and determine the size of the temperature when the injection pressure and orientation are generally products without core support, corresponding to larger shrinkage plastic injection mould base is divided into static model and dynamic model


     In injection molding machine injection on one side of the head with a gate set of static model, static model usually have a gate set of on board of the template, simple mould (especially the static die without core mold) can not use on board, directly using a heavy template can gate set for general standard parts, unless special reasons, do not recommend to cancel 

     Gate set used to install the mould replacement is convenient, without polishing their own some special mold gate piled out of the set of available or with taper thread cutting into part of the mould must be static mould stripping, still have to add static and demoulding mechanism dynamic model of the structure is commonly move template mold demoulding mechanism by plate and die feet and fixed plate installed 

      Plastic pieces of beautiful, is directly related to gate runner design is bad, prone to defects In the absence of any block type is easy to produce the snake flow For the high requirements of the product, but also should design the overflow and exhaust the overflow area can use the plunger, don't leave the overflow flash on template, will not affect the mold life 

Stripping rod demoulding mechanism, in addition to, and return, part of the mould to increase the spring in order to realize the features such as automatic demoulding and also guide pillar cooling hole flow the basic structure of mould, of course, oblique guide mold and oblique guide box guide post 

        When the mould design for a product, the first to set the basic structure of the mould size to preparation, to speed up the speed of mould manufacturing complex product should map good product first, then decide the size of the mold mold now basically to heat treatment, heightening the mold hardness, prolonging the service life of die

Before heat treatment to preliminary template processing: good drill bore column return (dynamic modulus) cavity bore hole screw gate set (static) pull hole (dynamic modulus) cooling hole, milling groove cavity, some mould should also milling good oblique guide box etc