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Mould-closing bag-moulding one-shot forming technique for composite material

A composite material and molding process technology, applied in the field of composite material closed-mold bag pressing once molding process, can solve the problems of difficult fiber orientation control, complex process, large equipment investment, etc., and achieves simple and environmentally friendly production, high structural strength, equipment The effect of less investment

Active Publication Date: 2008-12-24
BEIJING CAIHONG YUXING TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are that the equipment investment is large, the process is complicated, the reinforcing rib structure cannot be made at the same time when the fasting is made, and the fiber orientation control is difficult, etc.

Method used

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  • Mould-closing bag-moulding one-shot forming technique for composite material
  • Mould-closing bag-moulding one-shot forming technique for composite material
  • Mould-closing bag-moulding one-shot forming technique for composite material

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Experimental program
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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] see figure 1 , figure 2 shown. Firstly, the upper mold 2 and the lower mold 4 paste the composite material, and the interface between the upper mold 2 and the lower mold 4 is the overlapping joint of the composite material product. Decrease inwardly and exceed interface 10 and increase layer by layer when lower mold 4 lays layers, the length of increase is identical with the length that upper mold 2 reduces, and can be pasted temporarily on the lower mold 4 into temporary baffles. The air bag 6 is placed in the lower mold 4, the air bag 6 is pre-prepared, the size and shape are the same as the product and slightly smaller, and the demoulding process is performed. The part of the lower mold 4 that exceeds the composite material is displaced to the corresponding position on the airbag to close the mold. Inflate the air bag 6 to expand in the a...

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Abstract

The invention relates to a process, in particular to a hollow structure composite material closed die bag pressure one-step molding process. In the process, a part higher than a joint part and an upper die composite material decreasing part are preserved during the plastering of a lower die and are integrated to be one close and united body in overlapping and pressuring way under the function of an airbag. Composite materials can be added on the outside of the airbag to achieve higher strength. Meanwhile, multi-airbag external auxiliary composite materials can be adopted to be prepared into stiffened fasting products during the hollow preparation to obtain higher strength. The composite material closed die bag pressure one-step molding process has the advantages of simple equipment, time and labor saving performance, no waste materials, pollution-free, manufactured products with high strength, hollow one-step molding, hollow stiffened one-step molding, and the like, and is an ideal process for manufacturing tower tanks, wind blades, helicopter rotary blades, airplane empennages, etc.

Description

technical field [0001] The invention relates to a composite material closed mold bag pressing one-time molding process. In particular, it refers to a closed-mold bag press forming process for composite materials with empty stomach structure. Background technique [0002] At present, there are two main types of molding processes for fasting composite products: open mold molding and closed mold molding. The advantage of mold opening molding is that the fiber orientation control of the product is accurate, the equipment is less, and the operation is simple. The disadvantage is that the upper and lower parts of the finished product need to be clamped and bonded twice. When the product needs to be reinforced, it cannot be produced at the same time, and the strength is not high. Dimensions are not allowed, the process is complicated. More importantly, when the gel is solidified, a large amount of toxic gas is released, polluting the environment. Closed mold molding, such as va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44
Inventor 徐向阳
Owner BEIJING CAIHONG YUXING TECH DEV
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