Winding molding method of all-composite material shells

Abstract

The invention discloses a winding molding method of all-composite material shells, belongs to the technical field of molding process, and relates to the winding molding method of the all-composite material shells. The winding molding method comprises the steps: firstly, assembling a core mold, and filling a gas bag with light gas; next, carrying out surface treatment of the gas bag; then adopting the winding molding control program to control a winding machine to wind the outer surface of the gas bag with fiber bundles or cloth belts according to the program, and curing and molding according to temperature and time requirements required for molding; and finally, obtaining the composite material shells through a demolding process. The winding molding method has wide applicability, and can be used for manufacturing the composite material shells with different shapes and sizes and meeting a requirement of asymmetric front and back sealing surfaces. The process has good stability, equipment is simple and convenient, low in weight and strong in controllability, and the method is simple, practical, and easy to operate and popularize. Workers are prevented from entering the interior of the core mold for operation, the complex assembly and disassembly processes in a traditional winding process are greatly reduced, the difficulty of production operation is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of forming technology, and relates to a winding forming method for a full composite material shell. Background technique [0002] The existing full-composite shell molding method is to use metal or water-soluble materials as the material of the mandrel, and wrap resin fibers on its surface to obtain a semi-finished composite material. After curing and molding, the mandrel structure is disassembled or broken to obtain a composite Material shell. For example, the Chinese patent application number 2012103112711.3 of Zhao Xueping, Chen Xiaopeng, etc. discloses a water-soluble mandrel for forming a fiber-wound shell and its preparation method. It is easy to be damaged during the process; and for large composite shells with large shell diameter and length-to-diameter ratio and asymmetrical molding requirements for front and rear sealing surfaces, the core mold's self-weight is too large, which poses higher challe...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems in the prior art that the central axis deflection is too large due to the excessive weight of the mandrel, the operation inertia of the equipment is large, the control is difficult, the assembly and disassembly process of the mandrel is complicated, and a large amount of water is needed to crack the mandrel. Thereby reducing the molding efficiency and increasing the production cost, and providing a winding molding method for composite material shells with small self-weight, strong controllability, simple structure assembly and disassembly, low environmental pollution, high quality and high efficiency

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