Syringe mold design and manufacturing are closely related to plastic processing. The success or failure of plastic processing depends largely on the mold design effect and mold manufacturing quality, while the plastic mold design is based on the correct plastic product design.

The structural elements to be considered in the design of syringe plastic molds are:

1 parting surface, that is, the contact surface where the concave mold and the convex mold cooperate with each other when the mold is closed. The choice of its position and form is influenced by factors such as product shape and appearance, wall thickness, forming method, post-processing process, mold type and structure, demolding method and molding machine structure.

    
2 pouring system, that is, the feeding channel from the nozzle of the injection molding machine to the cavity, including the main channel, the runner, the gate and the cold hole. In particular, the location of the gate should be selected to facilitate the filling of the molten plastic in a well-flowing cavity. The solid-state flow path and the gate cold material attached to the product are easily ejected from the mold and removed during mold opening (heat flow). Except for the road model).

    
3 plastic shrinkage and various factors affecting the dimensional accuracy of the product, such as mold manufacturing and assembly errors, mold wear and so on. In addition, when designing compression molding and injection molding, the matching of the process and structural parameters of the molding machine should also be considered. Computer-aided design techniques have been widely used in plastic mold design.

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