Process for forming artificial leg made of carbon fiber composite materials

Abstract

The invention relates to a process for forming an artificial leg made of carbon fiber composite materials. The forming process comprises pre-soaked materials, cutting, paving, thermal forming, grinding and sand spraying, wherein the pre-soaked materials comprise one-way carbon fiber pre-soaked materials, 3K carbon fiber bundle woven fabric pre-soaked materials and a resin membrane, and the pre-soaked materials are cutting to needed shapes; in the paving link which is particularly important, the pre-soaked materials are adhered to a mould to form a pre-forming body in a paving mode, and in the paving process, an intermediate layer is arranged, the one-way carbon fiber pre-soaked materials are alternately paved along different directions and symmetrical to the intermediate layer, and the resin membrane is evenly melted by an electric iron and permeates into the pre-forming body; in the thermal forming link, the flat plate-like parts are formed by mould pressing, and the parts with a bigger radian are formed by bag pressing; and after demoulding, the formed artificial leg undergoes the grinding and the sand spraying treatments. The composite material artificial leg produced by the process has the advantages of high overall strength, light weight, fatigue resistance, good elasticity, good matching with a connecting piece, uniform geometric structure, good thermal stability, little amount of deformation and the like.

Description

technical field [0001] The invention relates to a molding process for an artificial foot, in particular to a molding process for an artificial foot using carbon fiber composite material. Background technique [0002] For the lower limb amputee, the weight and function of the prosthetic foot will directly affect the walking condition of the amputee, thus determining the quality of the prosthesis to a large extent. Especially for patients who are elderly, poor in physical strength, or amputated due to blood circulation disorders, if the weight of the artificial limb is too large, it will cause excessive stress on the residual limb, increase the burden on the healthy limb side, and even cause double Leg amputation, with adverse consequences. Therefore, how to realize the lightweight of the prosthetic foot on the basis of ensuring the function of the prosthetic foot has attracted extensive attention of researchers. [0003] At present, the internal skeleton of the prosthetic f...

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Problems solved by technology

[0003] At present, the internal skeleton of the prosthetic foot plate produced in China is generally made of wood, rubber, etc., and a few of them use carbon fiber composite materials, which have the advantages of high strength, light weight, and good rigidity. However, the particularity of the prosthetic leg requires high overall strength. , fatigue resistance, good coordination with connecting parts, well-proportioned geometric structure, and small deformation, so it is difficult to make using the current prosthetic foot forming process

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