Study On The Weft Structure Of Carbon Fiber Multilayer Variable Cross Section

The carbon fiber is at present the high performance material of world air traffic space industry first choice, and it has the high-strength and high module, thermostable, the resistance to fatigue, electric conduction and nature light and tractable and other outstanding performance, so the carbon fiber is conquering and substitutes for the traditional material gradually. Already widely applied in the aerospace, aviation and military field. Therefore high performance carbon fiber the research of textile equipment technology appears especially important. The study on weft insertion mechanism of carbon fiber multilayer loom takes the key technologies research and application three dimensional weaves the improvement of equipment to provide the solid rationale for the modern age. The paper key holds research and discussion to the following aspect:Based on the existing carbon fiber fabric, especially variable cross-section three-dimensional fabric structure and fabric weaving method are studied, and combined with the technical requirement of carbon fiber three-dimensional loom and fabric technical requirements, sums up the unique characteristic of variable cross-section of the weft insertion and requirements. According to the characteristics and requirements of variable cross-section weft insertion mechanism, the author analyzes the function structure of weft insertion mechanism design, the scheme choice compared to existing mechanism for weft insertion mechanism design scheme is given finally. Design a set of double side arrangement of unilateral weft insertion machine and a set of three to the adjustment of weft insertion device. Technical requirements and institutional solutions of the warp of weft insertion mechanism motion for design analysis. According to mechanism design scheme for 3D design, and dynamic modeling and simulation was carried out on the weft insertion mechanism, rapier motion curve.Analysis of the variable cross-section Angle of fabric structure and fabric weaving method, and put forward a kind of weaving of this kind of variable cross-section fabric weaving method. In the process of weaving weft insertion travel this paper discusses the changing law of weft insertion travel change law of mathematical model.Research and analyze for weft insertion motion of rapier looms, rapier movement calculated by using a simple method to design the modified trapezoid acceleration motion law, and detailed motion curve is obtained by Matlab programming.Through the analysis of the weft insertion mechanism of weft insertion motion law and gear mesh is affect stability and the cause of the vibration of rapier looms, rapier movement through Adams using different motion law of weft insertion mechanism of weft insertion mechanism policy comparison between the influence of dynamic performance, the results show that compared with different motion law of acceleration, the meshing impact force generated in the meshing gear and rack the influence of the dynamic properties of weft insertion mechanism even more. Is proposed two heterogeneous small module gear meshing a rack at the same time the method to improve the carbon fiber three-dimensional loom weft insertion mechanism dynamic performance, enhance the weft insertion mechanism motion stability, and through the Adams dynamics simulation through the comparative analysis of several schemes, verify the feasibility of this article put forward the design scheme and the expected effect.Managing loom weaving experiments to verify the weft insertion mechanism basic meet the requirements of application, at the same time, through the experiment also found that the deficiency of the loom weft insertion mechanism.And to the overall operation of the loom and weaving technology of carbon fiber had the further understanding.