Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Forming method of wall-thickness-variable composite skirt

A composite material and molding method technology, applied in the field of composite material molding, can solve the problems of poor molding quality, high demolding cost, high manufacturing cost, etc., and achieve the effects of shortening production cycle, reducing porosity, and improving molding quality

Inactive Publication Date: 2017-06-27
成都联科航空技术有限公司
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of poor molding quality, easy to cause surface defects, high demoulding cost, and high manufacturing cost of the existing preparation process of composite skirts, and provide a method for forming composite skirts with variable wall thickness. Facilitate rapid demoulding, improve molding quality and save production cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Forming method of wall-thickness-variable composite skirt
  • Forming method of wall-thickness-variable composite skirt
  • Forming method of wall-thickness-variable composite skirt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A method for forming a skirt made of variable wall thickness composite material, comprising the following steps:

[0060] Step 1, respectively prepare section 1 21 and section 2 22 of the blank of component 2 2, and divide section 1 21 into two sections;

[0061] Step 2. First attach the non-porous isolation film 6 on the surface of the member three 8, attach the section one 21 to the outer surface of the member three 8, and at the junction of the two sections of the section one 21, A carbon fiber fabric prepreg 11 is laid on the side in contact with the member three 8, and a release cloth 9 is arranged between the two sections of the section one 21;

[0062] Step 3, attaching the remaining part of the outer surface of the member 3 8 to the section 2 22, and the two ends of the section 22 overlap with the two ends of the section 1 21 respectively;

[0063] Step 4, set a non-porous isolation film 6, an air felt 7 and a vacuum bag 4 on the outside of the blank of the com...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a molding method of a composite material skirt with variable wall thickness. The method comprises the following steps: attaching a component to be formed on the outer side of component one, and connecting component two end to end in a ring shape and attaching to the outer side of the component to be formed , set a vacuum bag on the outer side of the whole formed by the component to be formed and the second component and carry out vacuum treatment, put it into an autoclave for curing and molding, and after the forming of the component to be formed is completed, open the second component along the junction. , and then separate the component to be formed from the component 1 to complete the process of demolding, wherein the component 1 is an annular hard component, and the component 2 is a strip-shaped soft component. Compared with the prior art, the combination of the soft mold and the hard mold is beneficial to improve the quality of the surface forming. By disassembling the soft mold, rapid demoulding is realized without destroying the mold, and the mold can be reused, effectively saving the cost of the mold and reducing the manufacturing cost. .

Description

technical field [0001] The invention relates to the technical field of composite material molding, in particular to a molding method of a variable-wall-thickness composite skirt. Background technique [0002] The connection skirt of solid rocket motor is an important part of the engine casing, which is used to realize the connection between the casing stages or the connection of the engine and the main structure of the missile. Due to the high specific strength and specific modulus of composite materials, Therefore, composite connecting skirts are widely used in the connection of rocket or missile main structures. [0003] Composite material skirts often have variable wall thickness, such as flanges at the bottom of the formed part, or sinking bevels, etc. The forming methods of the overall connecting skirt of composite materials include RTM forming process and winding layer forming process. The RTM molding process is to preform the flange and tube body of the composite mat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B29C70/34B29C70/54B29C70/68
CPCB29C70/342B29C70/54B29C70/68B29C70/681
Inventor 杨自燕陈剑李书军孙松强雍坤李波成雪峰赵鹏飞王亚鹏
Owner 成都联科航空技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com