Design elements of plastic moulds

Design elements

Mold design and manufacturing are closely related to plastic processing. Plastic processing success or failure, depends largely on the mold design effect and mold manufacturing

The success or failure of plastic processing depends largely on the effect of mold design and the quality of mold making, and the design of plastic mold is based on the correct design of plastic products. The basis is the correct design of plastic products.The structural elements to be considered in plastic mold design are:

① parting surface, i.e. the contact surface where the concave and convex mold fit each other when the mold is closed.contact surface. Its location and form are determined by the shape and The location and form of the parting surface is determined by the shape and appearance of the product, wall thickness, molding method, post-processing process, mold type and structure, demolding method and structure of the molding machine.It is influenced by the shape and appearance of the product, wall thickness, molding method, post-processing process, mold type and structure, demolding method and structure of the molding machine.

2 Structural parts, i.e. sliders, slant tops, straight tops of complex molds, etc.

The design of structural parts is very critical, which is related to the life of the mold, processing

The design of structural parts is very critical, which is related to the life of the mold, processing cycle, cost, product quality, etc. Therefore, the design of complex mold core

Therefore, the design of complex mold core structure requires high comprehensive ability of the designer.

Therefore, the design of complex mold core structure requires high comprehensive ability of the designer, and pursue more convenient, more durable and more economical design scheme as possible.

③ Mold accuracy, i.e. card avoidance, fine positioning, guide pillar, positioning pin, etc.

Positioning system is related to the appearance quality of products, mold quality and life, according to the different mold structure, choose different positioning methods, positioning accuracy control mainly relies on processing, internal mold quality and life.

The positioning accuracy control mainly relies on processing, the positioning of the inner mold is mainly the designer's full

The positioning accuracy control mainly relies on processing, and the inner mold positioning is mainly for the designer to fully consider and design a more reasonable and easily adjustable positioning method.Go to consider, design a more reasonable and easy to adjust the positioning method.

②Pouring system, i.e. the feed passage between the injection molding machine nozzle and the cavity

channel, including the main flow channel, diversion channel, gate and cold material cavity. Especially

The location of the gate should be selected to facilitate the molten plastic in a good flow state

The solid runners and cold material attached to the product are easy to be removed from the mold when the mold is opened.

The solid runner and cold material attached to the product can be easily ejected from the mold and removed when the mold is opened (except for hot runner molds).

(Except for hot runner mold).

(3) The plastic shrinkage rate and the factors affecting the dimensional accuracy of the product, such as mold manufacturing and assembly errors, mold such as mold manufacturing and assembly errors, mold wear, etc. In addition, the design of Compression and injection molds should also consider the process and structure of the molding machine .The design of plastic molds and injection molds should also consider the process and structure of the molding machine. The design of plastic molds has been widely used in computer Aided design technology.