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Forming method for composite grating

A composite material and molding method technology, used in household appliances, other household appliances, household components, etc., can solve the problems of high technical difficulty in operation, warping strength and other problems, achieve simple production process, meet fire protection requirements, and be practical and popular. effect of value

Inactive Publication Date: 2019-05-03
HENGSHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of high technical difficulty, warpage and low strength in the existing process

Method used

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  • Forming method for composite grating
  • Forming method for composite grating
  • Forming method for composite grating

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Embodiment Construction

[0023] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0024] Such as figure 1 As shown, there is a reinforced frame around the grid, and ribs are used to layer grids of different sizes and specifications in the middle.

[0025] The forming method of the composite material grid comprises the following steps:

[0026] Step 1: mold preparation, design the mold according to the grid structure, the grid mold includes a core mold mold, an upper mold mold and a lower mold mold, respectively as follows Figure 4 , image 3 and figure 2 , wherein the core mold is made of aluminum alloy, and the upper and lower molds are made of carbon fiber composite materials.

[0027] Step 2: Laying and pasting, design the blanking diagram according to the layup and mold, and use a cutting machine to cut, and lay the cut grid...

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Abstract

The invention discloses a forming method for a composite grating. The forming method comprises the steps that grating reinforcing frame prepreg is laid on a lower mold; a grating rib prepreg is laid on a core mold; the core mold and the lower mold are combined, grating reinforcing frame prepreg continues to be laid on the lower mold, an upper mold and the lower mold are assembled, solidified and formed, and mold release is carried out. OOA closed mold integrated forming is adopted, forming is easy, the manufacturing cost is low, net forming can be achieved, and the product appearance is ensured. The vacuum bag pressing technology and the RTM technology are combined, the mold and equipment input cost is reduced, and the grating manufactured from Tg inflaming retarding prepreg meets fireproof requirements and is applicable to the field of rail traffic.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a forming method of a composite material grid, and is especially suitable for places requiring ventilation and heat dissipation in the rail transit field. Background technique [0002] Composite materials have many advantages such as high specific strength, high specific modulus, and strong designability, and are more and more widely used in the field of rail transportation. Grids are mainly used for ventilation and heat dissipation of rail transit equipment. With the requirement of lightweight vehicles, composite material grids have been widely used. At present, the molding methods of composite grids mainly include injection molding and RTM molding. Injection-molded grids are prone to warping and low strength, which cannot meet market requirements for grids. Although the RTM-formed grid can meet the strength requirements, the RTM process has high requirements for...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29L31/00
Inventor 贾朋军董晴晴石双
Owner HENGSHEN
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