Forming method of bullet train hood of carbon fiber sandwich structure

A sandwich structure and molding method technology, applied in the field of motor vehicle hoods, can solve the problems of inability to locate the internal mounting surface, etc., and achieve the effects of stable size, good heat insulation and sound insulation performance, and good rigidity

Active Publication Date: 2021-04-02
株洲电力机车广缘科技有限责任公司
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Problems solved by technology

China's invention application patent 201610168076.4 provides a method for preparing a carbon fiber reinforced resin matrix composite rail vehicle head cover, but the head cover product prepared by this preparation method cannot be positioned on the internal mounting surface during the molding process

Method used

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  • Forming method of bullet train hood of carbon fiber sandwich structure
  • Forming method of bullet train hood of carbon fiber sandwich structure
  • Forming method of bullet train hood of carbon fiber sandwich structure

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with drawings and embodiments.

[0035] A method for forming the head cover of a carbon fiber sandwich structure, using such as Figure 1~5 Shown mold makes headgear, and this forming method comprises the following steps:

[0036] 1) Clean the first installation block 11, the second installation block 12 and the third installation block 13 with alcohol or acetone, and then install the first installation block 11, the second installation block 12 and the third installation block 13 respectively on the The inner side of the main form 1 corresponds to the position of the side window, the lamp house and the inspection door; then install the flange side mold 3 horizontally on the bottom of both sides of the main form 1, and ensure that one side of the flange side mold 3 extends into the main form 1 internal;

[0037] 2) Apply a release agent on the main mold 1, the first installation block 11, the second ...

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Abstract

The invention discloses a forming method of a bullet train hood of a carbon fiber sandwich structure. The forming method comprises the following steps that (1) horizontally installing flange edge molds at the bottoms of the two sides of a main mold; 2) coating a release agent on the main mold, the flange edge molds and a lower mold; 3) laying a first layer of carbon fiber fabric on the main mold and the lower mold; 4) after the first layer of carbon fiber fabric is laid, injecting resin into the first layer of carbon fiber fabric; after the resin injection is finished, curing by using a curingprocess required by a resin system; 5) dismounting the flange edge molds, and mounting the lower mold at the bottoms of two sides of the main mold; and (6) sequentially laying PVC functional foam anda second layer of carbon fiber fabric. When the hood is manufactured by the method, the flange edge molds are firstly used for manufacturing a vertically stressed mounting surface of a product, the mounting surface is formed and has a certain thickness after the first layer of carbon fiber fabric is laid, then the flange edge molds are disassembled, and the lower mold is installed for laying thePVC functional foam and the second layer of carbon fiber fabric, so that the product is manufactured.

Description

technical field [0001] The invention belongs to the technical field of motor vehicle hoods, and in particular relates to a forming method of a carbon fiber sandwich structure motor vehicle hood. Background technique [0002] At present, the hoods of rail transit vehicles generally use aluminum alloy profiles as structural beams, which are bent according to the radian required by the hoods and then welded and fixed on the chassis of the car body. The aluminum plate is stamped and formed according to the shape of each curved surface, and then welded to the aluminum alloy profile skeleton through welding process, and finally the arc is trimmed by tapping. The hood of the aluminum plate combined with the aluminum profile skeleton is not suitable for large-area integral molding, has poor rigidity, is easily deformed, and is heavy. [0003] The carbon fiber sandwich structure composite material is composed of PVC functional foam and carbon fiber laminates. It has outstanding adva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/30B29C70/78B29C33/60B29C35/02
CPCB29C70/30B29C70/78B29C33/60B29C35/02
Inventor 罗乐卢安黎王刚龚超屈发家施锋徐习光陈姿姜奇匡萱
Owner 株洲电力机车广缘科技有限责任公司
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