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Female mould molding method for composite part

A technology of negative mold forming and composite materials, which is applied in the field of negative mold forming of composite material parts, which can solve the problems of scrapped parts, inability to pressurize prepregs, prone to arching, bridging, loosening, etc., and achieve improvement Part quality, eliminate the effect of arching

Inactive Publication Date: 2018-01-16
KUANG CHI INST OF ADVANCED TECH
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Problems solved by technology

However, in the female mold forming process, since the female mold usually has sharp corners, especially the female mold that forms a V-shaped composite material product, due to such sharp corners, it is impossible to vacuum the vacuum bag in the process of vacuuming. Effective compression of prepreg at sharp corners
Therefore, the multi-layer prepregs at the sharp corners cannot be compacted and laid, so the edges or tips of the cured composite parts are prone to arching, bridging, loosening, etc., causing the parts to be scrapped
Products that cannot meet the quality requirements can not be obtained by the usual female molding method

Method used

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  • Female mould molding method for composite part
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Embodiment Construction

[0018] The illustrated embodiments are disclosed with reference to the drawings. It should be understood, however, that the disclosed embodiments are merely embodiments that may be shown in various and alternative forms. The figures are not necessarily to scale and some features may be exaggerated or minimized to show details of particular components. Specific structural and functional details disclosed are not to be interpreted as limiting, but as a representative basis for teaching one skilled in the art how to practice the present disclosure.

[0019] refer to figure 1 and figure 2 , the invention provides a method for forming a female mold of a composite material product, comprising the following steps: S10, paving and pressing a composite material layer 3 with adhesive properties in the female mold 1 to a predetermined number of layers; S20, placing The plastic sealing strip 9 is placed on the composite material layer 3 in the female mold 1; S30, vacuumize the female ...

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Abstract

The invention provides a female mould molding method for a composite part. The method includes the steps of: S10, paving a composite layer with adhesion properties after compression in a female mouldto a predetermined number of layers; S20, putting a plastic sealing rubber strip on the composite layers in the female mould; S30, setting a vacuum bag to the female mould and conducting vacuum pumping; S40, removing the sealing rubber strip and the vacuum bag, and repeating the steps S10 to S30 until the composite layers are all paved; and S50, curing the composite material layers to form a composite part. The invention aims to provide a female mould molding method for the composite part, the method can eliminate the arching, bridging and loosening phenomena arising during female mould molding of the composite part, and improves the part quality.

Description

technical field [0001] The invention relates to a method for forming a female mold of a composite material product. Background technique [0002] In order to ensure a smooth and flat shape, composite parts often adopt female molding and prepreg manual laying process. However, in the female mold forming process, since the female mold usually has sharp corners, especially the female mold that forms a V-shaped composite material product, due to such sharp corners, it is impossible to vacuum the vacuum bag in the process of vacuuming. Prepregs at sharp corners are effectively pressurized. Therefore, the multi-layer prepregs at the sharp corners cannot be compacted and laid, so the edges or tips of the cured composite parts are prone to arching, bridging, loosening, etc., causing the parts to be scrapped. Products that meet the quality requirements cannot be obtained by the usual female molding method. Contents of the invention [0003] Aiming at the problems existing in the...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29C70/54
Inventor 不公告发明人
Owner KUANG CHI INST OF ADVANCED TECH
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