A Soft Mold-Assisted Integral Forming Method of Composite Bearing Tube Containing Light-blocking Ring

Abstract

The invention provides an auxiliary integral forming method for a composite material bearing cylinder soft mould with a light baffle ring. The auxiliary integral forming method comprises the following steps: (a) preparing a silicon rubber soft mould, which is used for forming the light baffle ring, by silicon rubber casting; (b) assembling an integral co-curing forming mould and laying up the light baffle ring; (c) laying up skin and absorbing rubber; (d) carrying out secondary laying-up; (e) carrying out integral co-curing by adopting a hot pressure tank forming process; (e) sequentially dismounting an outer female mould, an upper end frame pressure ring, a lower end frame pressure ring, a core mould and a sectioning male mould, and taking out the silicon rubber soft mould from the sectioning positive mould, thereby obtaining a bearing cylinder product. According to the auxiliary integral forming method, the integral forming of a composite material cylinder and a light baffle ring structural part is realized by utilizing the silicon rubber soft mould to assist pressurizing and combining the hot pressure tank forming process, so that the problem that a cylinder inner-wall thin plate structure is not liable to pressurize is solved.

Description

technical field [0001] The invention belongs to the technical field of composite material structure forming, and in particular relates to a soft mold-assisted integral forming method of a composite material load-bearing cylinder with a halo-blocking ring. Background technique [0002] The integral molding technology of composite materials is a related technology that greatly reduces the number of parts and fasteners by means of co-curing or co-gluing, so as to realize the integrated molding of composite materials from design to manufacture. The overall molding includes the most commonly used technologies such as co-curing, co-bonding, and secondary bonding. This technology can give full play to the designability advantages of composite materials, reduce the local damage caused by fasteners such as screws to composite materials, and play an important role in reducing the cost of composite materials and improving the overall performance of composite materials. One of the deve...

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Problems solved by technology

This method not only has low efficiency and many fasteners, but also greatly increases the weight of the product, which cannot meet the requirements of light weight and high efficiency in satellite structures.

Therefore, it is necessary to realize the integral co-curing molding of the light-blocking ring and the bearing tube skin at one time, and maintain a certain connection strength, which brings considerable difficulties to the composite material molding process.

At present, there is no public literature at home and abroad that has reported the integral molding process technology of products with similar structures.

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