Forming die and method for manufacturing forming parts by using forming die

Abstract

The invention provides a die, comprising a bottom die (1), at least two stopping blocks (2, 3, 4) and a cover plate (5), wherein the at least two stopping blocks are arranged on the bottom die (1) at intervals so as to form a space; and the cover plate (5) is arranged across the adjacent stopping blocks. The die is characterized by further comprising a first pressing block (6) with a first slope (16) and a second pressing block (7) with a second slope (17), wherein a cavity is defined by one of the adjacent stopping blocks, the first pressing block (6), the cover plate (5) and the bottom die (1); and the first slope (16) is mutually attached with the second slope (17), so that the second pressing block (7) can vertically move with the first pressing block (6) in a mutual attaching manner. The die provided by the invention solves the problems of difficulty for assembly and pressurization, abhesion, looseness, unstable quality and the like in the present technology.

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] 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. The above-mentioned problems are particularly prominent. [0003] 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 weight, high specific strength, high specific modulus, good ductility, corrosion resistance, heat insulation, sound insulation, shock absorption, high (low) temperatu...

AI Technical Summary

Problems solved by technology

[0005] 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

[0010] 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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