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Method for preparing large-size automobile spoiler by adopting mould pressing method

A large-scale, molded-in technique for easy painting, good consistency, and a smooth finish

Pending Publication Date: 2022-06-10
荆门劲驰汽车配件股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a longer empennage, the product obtained by using the existing technology is easy to warp, and the dimensional accuracy cannot meet the design requirements

Method used

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  • Method for preparing large-size automobile spoiler by adopting mould pressing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (2) Foam baking: bake the preformed mold at 70° C. for 80 minutes.

[0033] (3) Carbon cloth cutting: according to the design size, cut the glass fiber, bidirectional yarn, unidirectional yarn and carbon bonded pre-impregnated with resin. The resin content of the glass fiber is 84%, and the weight is 20g / cm 2 . The two-way yarn is made of 0° yarn and 90° yarn, its resin content is 42%, and its joining angle is 45°; the unidirectional yarn is 0° yarn and its resin content is 42%; the resin content of carbon bond 80%, the weight is 10g / cm 2 ; The weight of 0° yarn is 80g / cm 2 , the weight of 90° yarn is 85g / cm 2 .

[0034] (4) Weighing, the difference between the total weight of glass fiber, two-way yarn, one-way yarn and carbon bond and the weight of the product cannot exceed 3%.

[0035] (5) Mold forming: Lay glass fiber, bidirectional yarn, unidirectional yarn and carbon bond on the preforming mold from inside to outside in sequence, and then put the preformed wet...

Embodiment 2

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Abstract

The invention discloses a method for preparing a large-size automobile spoiler through a mold pressing method, and belongs to the technical field of carbon fiber products. The method comprises the steps of foaming forming, foaming baking, carbon cloth cutting, weighing, in-mold forming, compression molding, rotary table cooling, mold stripping and aftertreatment. In the carbon cloth cutting process, the glass fibers, the bidirectional yarns, the unidirectional yarns and the carbon stickers which are preimpregnated with the resin are cut according to the design size, and the resin content of the glass fibers is 83-87%; the two-way yarn is formed by combining 0-degree yarn and 90-degree yarn, the resin content of the two-way yarn is 38-42%, and the yarn combining angle of the two-way yarn is 45 degrees; the unidirectional yarns are 0-degree yarns, the resin content of the unidirectional yarns is 38-42%, and the resin content of the carbon stickers is 78-82%. And special mould pressing conditions are matched and used in the mould pressing forming process. The product obtained by the method is not easy to warp, and can be used for preparing products with the length of 1.5 m or more.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber products, and in particular relates to a method for preparing a large-sized automobile tail by a molding method, and is especially suitable for preparing an automobile tail with a width greater than or equal to 1.5m. Background technique [0002] With the development of the automobile industry, people have higher and higher requirements for the quality of automobiles. In order to adapt to the development of the times and the needs of consumers, automobile manufacturers around the world are also constantly innovating, not only improving the efficacy and quality of auto parts, but also making various changes to some tooling and production lines for the production of auto parts. Improvements to increase productivity and reduce cost savings. At present, the structural and semi-structural parts of the automobile body are still metal products. In order to realize the lightweight of the automobile,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54
CPCB29C70/345B29C70/54B29C70/545
Inventor 于春光
Owner 荆门劲驰汽车配件股份有限公司
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