Mechanism Research And Experimental System Of The Bidirectional Weft Insertion Driven By Electromagnetic Force

In this paper,a new type of electromagnetic force driven shuttle is proposed,aiming to solve the large impact and low efficiency in the existing weft loom.Based on the basic principle of electromagnetism,the existing principle of picking weft insertion is changed,and the requirements of high speed,high efficiency,frictionless and so on need to be satisfied in the process of loom weft insertion.The magnetoresistive principle is used to study the electromagnetism The basic principle of braking.In this paper,the theoretical model of the electromagnetic projection / braking of the shuttle is established according to the proposed electromagnetic force.Based on the characteristic equation of the single-stage coil projection / braking circuit,the effect of the system under different capacitance and inductance values is discussed.The relationship between the parameters of the projection / brake coil and its internal magnetic field is analyzed relationship.The relationship between the magnetic field distribution within the coil,the total inductance of the projection / braking system and the distribution of the inductance gradient and the projection effect is explored in the high speed bi-directional weft insertion mode of the electromagnetic drive.And the electromagnetic drive projection / system two-way weft insertion model was established,and the simulation of the projection / braking process of the 6-stage coil was carried out.The results show that the magnetic projection /braking principle and the idea of the movement of the film and the weaving process are realized,which can realize the idea of the two-way weft insertion method of the electromagnetic levitation.Compared with the ordinary twist-In the process of projection and braking on the shuttle and the impact of yarn less.In this paper,the design of the magnetic suspension and the sley is carried out with the shuttle loft.The principle of active magnetic levitation is chosen as the basic principle of the design of the maglev sley,and the Nd Fe B permanent magnet of rare earth is used as the material of the shuttle.Taking the single permanent magnet and the electromagnetic coil as an example,the mathematical model of the permanent magnet force was established by the equivalent magnetic charge method,and the corresponding force simulation analysis was carried out to complete the suspension and movement of the shuttle in the maglev sley design.The experimental results show that the feasibility of the electromagnetically driven shuttle weft insertion is verified by the developed electromagnetic force driven film shuttle bi-directionalweft insertion experiment platform.The research ideas in this paper will provide support for the subsequent verification and practical study of electromagnetic drive and magnetic suspension shuttle meshing system.