Integral-molded large mold with complicated structure

Abstract

The invention relates to an integral-molded large mold with a complicated structure. The large mold comprises a mold body and a mold frame; an upper cover plate is fixed at the upper part of the moldbody; two side inserts are embedded in the two sides of the mold body; a bottom insert is embedded in the bottom of the mold body; a front end insert is embedded in the front end of the mold body; theupper cover plate, the two side inserts, the bottom insert and the front end insert are detachably embedded in the mold body; the mold frame is positioned on the outer side of the mold body; the moldframe and the mold body are bonded through resins, and are reinforced by glass fiber cloth or felt hand paste; the mold body adopts a carbon fiber and glass fiber mixed composite material; and the carbon fiber composite material has the characteristics of low thermal expansion coefficient and excellent heat conductivity. Compared with a metal mold, the weight of the mold with the composite material is greatly reduced; as the product is integrally molded, a lot of operating time is saved, and the appearance flatness and the assembly precision of the product are guaranteed; and through detachable design of the inserts, the reverse buckling of the product is prevented, and the product can be quickly demolded.

Description

technical field [0001] The present invention relates to a large-scale mold, in particular to a mold whose main material is a mixed composite material of carbon fiber and glass fiber, which ensures that the mold has a low thermal expansion coefficient, and at the same time, its expansion coefficient is almost the same as that of the molded product, thereby ensuring the stability of the product. Dimensional accuracy; the inserts used in the mold are designed to be detachable to ensure the complex shape of the product surface and can be demolded smoothly; the outer surface of the mold is reinforced with a steel frame, which is a large mold with a complex structure that is integrally formed for easy mold handling and transportation. Background technique [0002] With the development of the rail transit industry, lightweight trains have become an important development direction. With the increase of the proportion of composite materials used in trains, in order to meet the streng...

AI Technical Summary

Problems solved by technology

Generally, metal molds are obtained through mechanical processing, and the dimensional accuracy depends on the machining accuracy, which is difficult to improve; and the thermal expansion coefficient of the metal mold is relatively large, and the product size error after molding is large; compared with the composite material mold of the same volume, the metal mold is relatively heavy. Handling and moving are relatively laborious, and there is a risk of injury; when placed for a long time, the metal mold has the risk of rust and oxidation, which poses a potential threat to products with relatively high precision requirements

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