Theoretical research on propulsion mode of magnetic suspension needles for jacquard knitting

In order to reduce energy consumption of the electronic selecting mechanism of a jacquard circular knitting machine and improve the efficiency of jacquard knitting,this paper proposed a propulsion theory for the high-speed magnetically suspended knitting needles based on magnetic suspension theory by means of imposing electromagnetic force directly on the knitting needles.The feasibility of the principle for magnetically suspended propulsion needle selection of the circular knitting machine was discussed.The basic structure of magnetic suspension needle for suspension propulsion was given,and the thermal motion results of the needles were worked out by analyzing the magnetic circuit of the needle system,friction heat of knitting,and the heat of the electromagnetic device.Thus a new propulsion method for needle selection of jacquard knitting was investigated.The knitting control model and the movement characteristic of the needles during loop forming were also discussed,providing a reference for further study of the theory of magnetic suspension propulsion of jacquard knitting,and according to the theory the propulsion of jacquard knitting in a narrow space is achieved.