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Method for hollow molding of compound material and auxiliary assembly thereof

A composite material and auxiliary tooling technology, applied in the field of processing technology, can solve the problems of easy cracking at the joints, poor surface quality, and low efficiency

Active Publication Date: 2012-11-28
SHENYANG AIRCRAFT CORP
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] Composite hollow molding is generally spliced ​​by two or more parts, which has low efficiency, poor surface quality, and the joints are easy to crack, and the overall strength is low

Method used

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  • Method for hollow molding of compound material and auxiliary assembly thereof
  • Method for hollow molding of compound material and auxiliary assembly thereof
  • Method for hollow molding of compound material and auxiliary assembly thereof

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Embodiment Construction

[0023] Such as figure 1 Shown, a kind of composite hollow molding method comprises the following steps:

[0024] 1) Use the hollow auxiliary tooling as the center, and use the casting method to make a fetal membrane 11 with low melting point materials;

[0025] 2) Wrap a layer of film isolation layer 12 on the surface of the fetal membrane to form a double-layer carcass, and apply a release agent;

[0026] 3) Wrap the prepreg 13 outside the film isolation layer, and then put it into a hot press mold coated with a release agent;

[0027] 4) Inject heated inert gas through the hollow auxiliary tooling to increase the temperature and pressure in the double-layer carcass to melt the low melting point embryo body;

[0028] 5) Heat up the external hot-pressing mold to ensure that the internal and external temperatures of the composite material are consistent;

[0029] 6) Under the condition of ensuring the specified pressure in the inner cavity of the composite material, the molt...

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Abstract

The invention relates to a method for hollow molding of a compound material, which comprises the following steps: 1) manufacturing a tire membrane by using a low-melting-point material; 2) covering a membrane isolating layer on the surface of the tire membrane; 3) covering a pre-soaking material on the membrane isolating layer, and then placing into a hot-pressing mould coated with a release agent; 4) injecting heated inert gases and increasing the temperature and pressure in a double-layer tire body; 5) ensuring consistent inner and outer temperatures of the compound material; 6) discharging the molten low-melting-point material from a cavity of a hollow auxiliary assembly; 7) molding the compound material under the conditions of high-temperature and high-pressure inert gases and mould temperature; and 8) pulling out the hollow auxiliary assembly and taking out the final compound material product, and removing the isolating layer, thereby obtaining the end product. According to the method, the quality is stable, the overall dimension is consistent, the whole strength is high, the wall thickness is uniform, the phenomenon of easiness in cracking due to ultralow strength is avoided, and meanwhile, the auxiliary assembly is adopted so that the extraction during the processing process is more convenient.

Description

technical field [0001] The invention relates to a composite material hollow forming method and its auxiliary tooling, belonging to a processing technology. Background technique [0002] Composite hollow molding is generally spliced ​​by two or more parts, which has low efficiency, poor surface quality, and the joints are easy to crack and the overall strength is low. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a hollow molding method for composite materials, which can achieve stable quality, consistent external dimensions, high overall strength, uniform wall thickness, and avoid the phenomenon of low strength and easy cracking. At the same time, the auxiliary tooling is used to make the extraction more convenient during the processing. [0004] In order to solve the above problems, the specific technical solution of the present invention is as follows: a method for composite hollow molding, comprising the fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44B29C70/54
Inventor 景智许学军宗爱国王佳宁
Owner SHENYANG AIRCRAFT CORP
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