基于电磁弹射的宽幅织机引纬方式与磁场分析

Weft insertion method and magnetic field analysis of wide-width loom based on electromagnetic ejection

针对现有线圈型电磁投梭能量利用率低、速度难以调节等问题,提出一种电磁弹射引纬方法。结合宽幅织机悬浮引纬的技术要求和动力学计算,设计了电磁弹射器的结构参数并建立三维有限元模型。通过有限元仿真分析三相电流幅值、频率和线圈匝数对引纬器速度的影响。同时,调整气隙长度以研究气隙与出口速度的关系。模拟了多个电磁弹射器叠加后的加速效果。试验结果表明,最高出口速度可达50.58 m/s,验证了电磁弹射器投梭引纬方案的可行性。

Aiming at the problems of low energy utilization rate and difficult speed adjustment of the existing coil-type electromagnetic shuttle,an electromagnetic ejection weft insertion method is proposed.Combined with the technical requirements and dynamic calculation of the suspension weft insertion of the wide-width loom,the structural parameters of the electromagnetic catapult are designed,a three-dimensional finite element model is established,and the three-phase current amplitude,frequency,and coil turns are analyzed by finite element simulation.At the same time,adding a load can study the relationship between the current frequency and the starting speed and synchronization speed.The experiment simulates the acceleration effect of multiple electromagnetic catapults superimposed.The result shows that the maximum speed can reach 50.58 m/s,which verifies the feasibility of the electromagnetic catapult shuttle insertion scheme.