Method for manufacturing and forming part

Abstract

The present invention provides a method for manufacturing compression molded parts, said method comprising the following steps: mold assembly and feeding steps; mold packaging step; and curing and demoulding steps; wherein said method uses a mold comprising the following components Performing: a bottom form, at least two stops, and a cover plate, the at least two stops being spaced apart on the bottom form so as to form a space between adjacent stops, the cover plate spanning Arranged above the adjacent block; a first block with a first slope and a second block with a second slope arranged in the space, one block in the adjacent block, The first pressing block, the cover plate, and the bottom mold define a cavity, and the first inclined surface and the second inclined surface are attached to each other, so that the second pressing block can be connected to the first pressing block Snugly moving up and down the first slope. The invention overcomes the problems of debonding, looseness and unstable quality existing in the prior art.

Description

technical field [0001] The invention belongs to the technical field of forming molds, and in particular relates to a forming mold and a method for manufacturing formed parts. Background technique [0002] In the process of utilizing advanced composite materials, it is often necessary to manufacture advanced composite materials into various composite parts. For composite parts with complex structures, RTM (Resin Transfer Molding, resin transfer molding) and autoclave processes can be used. Generally, the RTM process adopts co-curing molding technology, while the autoclave process basically uses parts to be formed separately and then glued and cured. The so-called advanced composite materials refer to composite materials that can be used to process the main load-bearing structure and the secondary load-bearing structure, and whose stiffness and strength properties are equal to or exceed those of aluminum alloys. Advanced composite materials have the characteristics of light ...

AI Technical Summary

Problems solved by technology

Today's forming tools still have many problems, such as not easy to assemble and / or pressurize, debonding, porosity and unstable quality, especially when using Advanced Composites Material to manufacture composite parts. molding dies, the above problems are particularly prominent

[0003] At present, the RTM process mainly has the following problems: (1) The impregnation of fibers by resin is not ideal, and there are high voids and / or dry fibers in the product; (2) The fiber content of the product is low, generally about 50%; (3) In the mold cavity with large area and complex structure, the resin flow is not balanced, and this dynamic process cannot be observed, let alone predicted and controlled

[0008] In addition, the molds used in autoclave molding technology, for example, have the following problems when using soft rubber molds: (1) The small molecules in the prepreg are difficult to drain, and the product is prone to loose and porosity defects; (2) ) The soft rubber mold is used as a pressure source. Since the rubber mold is thicker, especially in the corner area, the expansion capacity is different from other areas, and the inverted T structure cannot be completely attached to the skin plate, resulting in debonding and loosening. (3) During the heating process of the rubber soft mold, due to the problem of heat conduction, the uncertain factors of heating and curing of the parts increase, resulting in unstable quality after curing

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