Plastic mold design elements

Hits:Updated:2018-01-06 14:01:23【Print】

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

Plastic mold design to consider the structural elements are:

1 parting surface, that is, when the mold is closed, the concave mold and the convex mold cooperate with each other. Its location and form of selection, subject to shape and appearance of products, wall thickness, molding methods, post-processing technology, mold type and structure, demoulding methods and molding machine structure and other factors.

2 structural parts, that is, complex mold slider, inclined top, straight top block and so on. The design of the structure is very crucial, which is related to the life of the mold, the processing cycle, the cost, the quality of the product, etc. Therefore, designing the complex mold core structure has higher requirements on the designer's comprehensive ability, and pursuing the simpler, more durable and more economical Design.

3 die accuracy, that is, to avoid the card, fine positioning, guide posts, pins and other positioning. Positioning system is related to the quality of the appearance of the product, mold quality and life expectancy, according to the different mold structure, select a different positioning method, positioning accuracy control mainly rely on processing, internal model positioning is mainly designers to fully consider and design a more reasonable and easy to adjust the positioning the way.

4 casting system, that is, from injection molding machine nozzles to the cavity between the feed channel, including the main runner, runner, gate and cold material hole. In particular, the location of the gate should be such that the molten plastic fills the cavity in good flow conditions. The solid runner and gate charge attached to the product are easily ejected and removed from the mold during mold opening (heat flow Road except).

5 plastic shrinkage and affect the size of the product accuracy of the various factors, such as mold manufacturing and assembly errors, mold wear and so on. In addition, the design of compression molding and injection mold, molding machine should also consider the process and structure parameters match. In plastic mold design has been widely used in computer-aided design technology.




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