Composite material forming mould

A composite material and forming mold technology, which is applied in the forming of single-sided closed-angle closed edge structure composite material parts, and in the field of composite material forming molds, can solve the problems of composite material parts such as surface accuracy, quality inferior to metal molds, and unfavorable mass production. , to achieve the quality assurance of parts, ensure the accuracy of external dimensions, and good operability

Inactive Publication Date: 2016-01-20
AVIC BASIC TECH RES INST
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  • Application Information

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Problems solved by technology

Traditional heterogeneous structural composite parts can be manufactured by using rubber shrinkage molds, foam, plaster and other parts, and the parts can be obtained by destroying the mold after molding, but the

Method used

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  • Composite material forming mould
  • Composite material forming mould

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings. The mold includes a main mold 1, a split mold 2, a left positioning pin 3, and a right positioning pin 4, wherein the split mold 2 is connected to the left positioning hole 10, the left positioning hole 15 and the right positioning pin through the left positioning pin 3. The pin 4 connects the right positioning hole 12, the right positioning hole 17 and the main body mold at the lower separation surface 13 and the inner separation surface 14 and combines with the main body mold 1; 6. The middle side of the mold 7 and the web surface of the mold 8 jointly form a profile consistent with the internal profile of the single-sided closed-angle closed edge strip structure composite material part. The prepreg can be laid up and cured on the molded surface.

[0024] After the parts are molded, the demoulding can first separate the split mold 2, the formed part assembly and the...

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Abstract

The invention belongs to the technical field of aerospace manufacturing and particularly relates to a composite material forming mould used for forming of composite material parts of a unilateral closed angle and closed edge strip structure. Existing composite material forming moulds comprise metal moulds, composite material moulds, rubber moulds, foam moulds, gypsum moulds, soluble polymer moulds and the like. Traditional composite material parts of a special-shaped structure can be manufactured in the mode that parts are formed through rubber contraction moulds, foam moulds, gypsum moulds and other moulds and then moulds are destroyed, but the moulds are only suitable for one-time or several-time forming, batch production is not facilitated, and the surface precision, quality and the like of the composite material parts manufactured through the moulds are inferior to those of the metal mould on the whole. The composite material forming mould used for forming of the composite material parts of the unilateral closed angle and closed edge strip structure is reasonable in design and easy to manufacture, and forming and mould releasing of the composite material parts of the unilateral closed angle structure are achieved.

Description

technical field [0001] The invention belongs to the technical field of aviation manufacturing, and in particular relates to a composite material molding die, which is used for molding composite material parts with single-side closed-angle closed edge strip structure. Background technique [0002] Composite materials have become one of the most important contemporary aeronautical structural materials due to their unique advantages of high specific strength, high specific stiffness, strong designability, good fatigue fracture resistance, corrosion resistance, good dimensional stability, and easy large-area overall forming. one. The position and amount of composite materials used in aircraft have become one of the main indicators to measure the advancement of aircraft structure. At present, foreign new fighter jets and civil aircraft use composite materials in large quantities. The F-22 uses more than 24% of composite materials. The B787 "Dream" civil aircraft developed by Boe...

Claims

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Application Information

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IPC IPC(8): B29C70/42B29C33/44
CPCB29C33/44B29C70/42
Inventor 程文礼邱启艳袁超陈静
Owner AVIC BASIC TECH RES INST
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