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

Thermal diaphragm preforming method suitable for Z-shaped structure composite material

A composite material and preforming technology, which is applied in the field of thermal diaphragm preforming, can solve the problem of difficult to achieve accurate positioning and fixing measures for blanks and tooling, difficult to meet the expanded application of composite material structures, low laying efficiency and quality stability, etc. problems, to achieve the effect of controllable transfer, avoiding surface instability and precise positioning

Active Publication Date: 2021-04-02
海鹰空天材料研究院(苏州)有限责任公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditionally, Z-shaped trusses are preformed by manual laying. Due to the concave and convex shape of the laying process, the laying efficiency and quality stability are relatively low, which is difficult to meet the further expansion and application of composite material structures.
However, due to the special structural form of the Z-shaped structure, the automatic forming methods that have been widely used at present, including the automatic tape laying process and the automatic silk laying process, are limited by the size of the tape laying head and the silk laying head, and it is difficult to achieve 90% of the structure. ° and 45° plies for stable placement
For the Z-shaped structure, if the traditional thermal diaphragm preforming method is used, it is difficult to achieve effective and accurate positioning and fixing measures between the blank and the tooling, and cannot meet the precise forming quality assurance

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
  • Thermal diaphragm preforming method suitable for Z-shaped structure composite material
  • Thermal diaphragm preforming method suitable for Z-shaped structure composite material
  • Thermal diaphragm preforming method suitable for Z-shaped structure composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The technical solutions protected by the present invention will be specifically described below in conjunction with the accompanying drawings.

[0033] Please refer to Figure 1 to Figure 8 . The present invention proposes a thermal diaphragm preforming method suitable for Z-shaped structural composite materials. The Z-shaped structure 1 made of composite materials includes a main body 10 and edge parts bent and arranged at both ends of the main body 10 11, please refer to Figure 8 , the Z-shaped preform 1 has an inner diameter α and an outer diameter R1 on the left, and an inner diameter β and an outer diameter R2 on the right, the two inner diameters are sharp corners, and the two outer diameters are rounded corners.

[0034] The thermal diaphragm preforming method for forming the above-mentioned Z-shaped structure comprises the following steps:

[0035] Primary molding: This process is completed with the primary preforming tooling 2, the primary preforming toolin...

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 provides a thermal diaphragm preforming method suitable for a Z-shaped structure composite material. The method comprises the following steps of firstly, finishing primary forming through a primary preforming tool, and then finishing secondary forming by inverting a first main body tool and butting with a secondary preforming tool to obtain a preform. By means of a primary preformingtool and a secondary preforming tool, laying of prepregs is not limited by the size of a laying head or a fiber laying head any more, stable laying of the prepregs is achieved, controllable transferof uncured prepreg laminated blank pieces can be achieved, the risk of prepreg profile instability caused by tool conversion of two times of thermal diaphragm preforming is avoided, and accurate forming of the Z-shaped structure is guaranteed.

Description

technical field [0001] The invention relates to the processing field of composite materials, in particular to a thermal diaphragm preforming method suitable for Z-shaped structural composite materials. Background technique [0002] The special application environment of aerospace determines its continuous pursuit of lightweight structural materials. Resin matrix composites have become the preferred material option in aerospace structures due to their outstanding specific strength and specific modulus advantages. The characteristics of integrated structural design of composite materials enable composite materials to further exert the mechanical properties of high-performance fibers by designing different reinforcement forms in addition to their own light weight and high strength. For example, using different forms of long strings to reinforce skin structures, Among them, the Z-shaped stringer is a typical stringer form. In the composite material structure, the Z-shaped stru...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/30B29C70/54
CPCB29C70/30B29C70/54
Inventor 陈超倪敏轩郭长龙唐中华张帅刘秀嵇培军
Owner 海鹰空天材料研究院(苏州)有限责任公司
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