Research On Knitting Technology Of Seamless Fabrics Knitted On Double Needle Bar Jacquard Machine

The knitting technology of seamless fabrics made on double needle bar Jacquard Rachels is a high-tech process which include computer, control and knitting technics. It has characteristics of high productivity, changing patterns fast and meeting needs of fashion trends in market. The paper studies the knitting technology of seamless fabrics made on double needle bar Jacquard Rachels,which can provide theoretical basis of rapid development in machinery equipment and seanless fabrics knitting technology of our country at present.The paper firstly introduces knitting technique of seamless fabrics and the research state of the knitting technology of seamless fabrics at home and abroad. It also points out the main contents and significance of this thesis. Secondly,because RDPJ series is the most advanced warp knitting machine of producing seamless fabrics ,the thesis studies its structure, performance character and knitting process respectively. The control system of RDPJ series takes an important part in knitting progress of seamless fabrics, which include Electronic Beam Control System , Electronic take-up Control System and Piezo Jacquard control system.,and then discuss principle from the perspective of its control. Subsequently, the paper analyzes fabrics design from the style design, choosing material and knitting construction, introduces seamless realization of seamless fabrics on the basis of the latest double needle-bar Jacquard technique, and also analyzes technological route from calculatting technics parameters,kntting, warping and after finish. Finally, based on the elastic fiber knitted into seamless garments, through the establishment of mathematical model of human body on the direction of surrounded degree, From the Angle of human body pressure,the paper discuss seamless fabrics knitting size when the human feel comfortable, and studies seamless fabric craft parameter relation through the test of pressure and the tensile properties in three fabrics.Anyhow, it is expected to provide theoretical and practical production technology to warp-knitted seamless fabrics and promote the development of seamless knitting fabric, and improve the quality of domestic seamless fabric .