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Simple composite material grid workpiece forming method

A composite material and molding method technology, applied in the direction of nets, other household appliances, household appliances, etc., can solve the problems of large investment in the molding process, high cost of raw materials, and high design difficulty, and achieve low requirements for winding equipment, low cost, and winding equipment. ask for simple effects

Inactive Publication Date: 2018-10-12
HENGSHEN
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  • Abstract
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  • Application Information

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Problems solved by technology

However, due to the high difficulty of design, the high cost of raw materials, and the large investment in molds, processing, and molding processes

Method used

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  • Simple composite material grid workpiece forming method
  • Simple composite material grid workpiece forming method

Examples

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Embodiment 1

[0024] to attach figure 1 Take the grid structure unit as an example, assuming that the inner diameter of the formed grid structure product is 138mm, the length is 600mm, and the thickness of the rib is 2mm. The grid structure unit is as follows figure 2 As shown, the wrapping angle is 30°.

[0025] The mold is 1m long, 138mm in diameter, with heads at both ends, which can realize 30° geodesic winding. There is no slot in the mold barrel, and there is a circumferential cutting groove about 2mm wide and 2mm deep at the junction of the head and the barrel. The specific molding method includes the following steps:

[0026] (1) Mold preparation: Wipe the mold surface with a rag dipped in acetone to remove oil and impurities on the mold surface. After the acetone has evaporated, apply a mold release agent evenly on the mold surface for 2 times. After the mold dries for 30 minutes, install the mold on the winding on board;

[0027] (2) Material preparation: place the fibers in a...

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Abstract

The invention provides a simple composite material grid workpiece forming method. The forming structure is a thin-wall structure. A simple cylinder die is adopted for forming. The forming method comprises the following steps that 1, a die is installed and located; 2, grid winding is carried out; 3, thin film winding is carried out; 4, curing is carried out; and 5, demoulding is carried out. According to the forming method, the die design is simple, the demoulding manner is simple, the requirement for winding equipment is low, the workpiece appearance is better, the method can be used for batchproduction, the production efficiency is high, and the cost is low.

Description

technical field [0001] The invention belongs to the technical manufacturing field of composite materials, and in particular relates to a simple composite material mesh forming method. Background technique [0002] The composite grid structure has extremely high specific strength and specific stiffness performance, and its structural stability is outstanding. Compared with traditional metal structural products, the composite grid structure is more designable, and it is easier to achieve light weight and high strength through parameter optimization. The commonly used composite grid structure is usually in the form of a cylinder or a conical shell. It is used in Rocket fairings, interstage sections, aircraft fuselages, and missile barrels are mostly formed by co-curing or co-cementing of grid ribs and skins. [0003] Domestic research on grid grid structure is mostly biased towards simulation analysis, experimental research, etc., and there are few reports on how to form grid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/38B29L28/00
CPCB29C70/38B29L2028/00
Inventor 谢昌江钱京陈明新刘伟
Owner HENGSHEN
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