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Forming and manufacturing method of composite material hat-shaped reinforced panel based on wire laying technology

A technology of composite materials and reinforced wall panels, which is applied in the aerospace field, can solve the problems of skin sagging, insecurity, and high cost of metal mandrels, and achieve the effects of avoiding skin deformation, ensuring air tightness, and long service life

Active Publication Date: 2019-07-30
COMAC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal core molds are used to form reinforced wall panels. Metal core molds are expensive and heavy, and cannot be demoulded for complex curvature panels
The rubber mandrel is used to form the reinforced wall panel. The solid rubber mandrel cannot guarantee that the internal molding pressure of the hat-shaped reinforced wall panel is the same as the external curing pressure when the wall panel is co-cured. Pressure requirements
The hollow rubber mandrel can ensure that the internal molding pressure of the hat-shaped reinforced wall panel is the same as the external curing pressure, but for the wall panel, the male mold with the hat-shaped rib groove is used for laying and the skin is manufactured by the silk laying process. , the hollow rubber mandrel cannot support the pressure of the laying head, which will easily cause the skin at the hollow part of the reinforced wall panel to sink, and the correct shape cannot be guaranteed

Method used

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  • Forming and manufacturing method of composite material hat-shaped reinforced panel based on wire laying technology
  • Forming and manufacturing method of composite material hat-shaped reinforced panel based on wire laying technology
  • Forming and manufacturing method of composite material hat-shaped reinforced panel based on wire laying technology

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Embodiment Construction

[0032] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings show, by way of example, specific embodiments in which the invention can be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention.

[0033] first step, such as figure 1 As shown, first apply a release agent or a release cloth on the inner surface of the hat-shaped reinforcement groove of the wall panel male mold 1, and then manually lay out the hat-shaped reinforcement 2, or place the cured Hat-shaped stiffener 2. The hat-shaped stiffener 2 is preferably made of carbon fiber-reinforced unidirectional tape, and may also be carbon fiber-reinforced fabric, glass fiber unidi...

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Abstract

The invention provides a composite cap-shaped ribbed wallboard forming manufacturing method based on the fiber placement technology. The method comprises the steps that the inner surface of a cap-shaped reinforcement tank of a wallboard male mold forming mold is coated with a releasing agent or paved with demolding cloth; a cap-shaped reinforced part is laid or a solidified cap-shaped reinforced part is placed; rubber pipes coated with a releasing agent or rubber pipes which demolding cloth is wound around are placed in a groove of the cap-shaped reinforced part, and internal supporting parts matched with the rubber pipes in shape are placed in the rubber pipes; a tubular vacuum bag with the two ends open is placed between the internal supporting parts and the rubber pipes, and the rubber pipes are fixed to the wallboard male mold forming mold; an empty region of the cap-shaped reinforced part is filled with a filling material; the outer surface of the forming mold is paved with a skin through automatic fiber placement equipment; the outer surface of the skin is covered with a layer of technological cover plate; the vacuum bag is opened and vacuumized and then is subjected to heating, pressurization and solidifying forming; after cooling, the wallboard male mold forming mold is released, the rubber pipes are pulled out, and a composite cap-shaped ribbed wallboard is obtained.

Description

technical field [0001] The present invention relates to a method for forming and manufacturing composite material components in the field of aerospace technology, and more particularly, to a method for forming and manufacturing composite material hat-shaped reinforced wall panels based on wire laying technology. Background technique [0002] Composite hat-shaped stiffened panel structure is composed of hat-shaped ribs and skin, which has high torsional stability and buckling strength, so it is widely used in aircraft structures, such as fuselage panels and pressure cabins. Using highly mechanized and digital automatic wire laying technology to manufacture composite material hat-shaped reinforced wall panels has the advantages of high manufacturing efficiency, good product quality consistency, and low material waste, and is especially suitable for manufacturing cylindrical or other complex components. [0003] According to the product form, hat-shaped reinforced panels can be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/44B29C70/54B29L7/00
CPCB29C70/44B29C70/542B29L2007/002
Inventor 刘兴宇宋扬吴德财肖军刘亚沣
Owner COMAC
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