Manufacturing method for core mold air bag

Abstract

The invention belongs to the technical field of production of hollow composite products, and discloses a manufacturing method for a core mold air bag. The manufacturing method comprises the air bag manufacturing step and the core mold manufacturing step; in the air bag manufacturing step, a dry latex mold is formed in a mold in a latex coating mode through a latex coating machine, and then is vulcanized to form a soft latex air bag with a hollow inner hole; and in the core mold manufacturing step, the hollow inner hole of the soft latex air bag is filled with a foaming material, the foaming material is foamed in the soft latex air bag to form a foamed core mold, and then the core mold air bag composed of the soft latex air bag and the foamed core mold is obtained. According to the manufacturing method, firstly, the soft latex air bag is manufactured, then the soft latex air bag is filled with the foaming material to be foamed to form the foamed core mold, in this way, a high vulcanization temperature of the soft latex air bag can be set in the vulcanization formation process of the soft latex air bag, on the one hand, the forming time of the soft latex air bag can be greatly shortened, on the other hand, the soft latex air bag can be completely vulcanized, so that the soft latex air bag does not absorb moisture, and therefore the stability and the reliability of the physical performance of the hollow composite products are guaranteed.

Description

technical field [0001] The invention relates to the technical field of production of hollow composite material products, in particular to a manufacturing method of a mandrel airbag used for compression blow molding hollow composite material products. Background technique [0002] Hollow composite products refer to hollow products made of reinforcing materials such as carbon fiber or glass fiber and thermosetting resin (epoxy resin, etc.), which are widely used in bicycle frames, front forks, handlebars, rims and other products. Hollow composite products are generally manufactured by compression-blow molding process, and the airbag is an important part for compression-blow molding hollow composite products. [0003] In the traditional technology, the airbags used for compression blow molding hollow composite products mainly include nylon trachea and 3D nylon mandrel airbags. Among them, the first type of nylon air tube is the most widely used general-purpose air bag at prese...

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Problems solved by technology

[0016] The purpose of the present invention is to provide a manufacturing method of a mandrel airbag, which aims to solve the problems of complex production process, low production efficiency, poor physical properties and high product scrap rate when the existing mandrel airbag is used to manufacture hollow composite material products. technical problem

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