宽幅电磁投射悬浮引纬关键技术及试验研究

Key technology and experimental study of electromagnetic projection and suspend in wide weft insertion

现有片梭织机采用扭轴式投梭方法,存在驱动冲击大、能量转换效率低等不足。基于此问题提出一种感应式电磁投梭方案。该方案对电磁感应理论进行研究,建立了感应式电磁投梭基本模型,经仿真分析及试验验证发现,电磁投梭较扭轴投梭在驱动力、速度、加速度、位移等方面更具有优势。探讨了实现宽幅电磁投射悬浮引纬的关键影响因素,得出引纬器厚度、电流幅值频率等与引纬器悬浮磁力的关系规律,建立了磁悬浮引纬阵列数学模型,经有限元仿真和试验分析,其结论与模型基本一致。

The existing projectile looms adopt the torsional shaft projectile throwing method,which has the disadvantages of large driving impact and low energy conversion efficiency.On this basis,a scheme of induction type electromagnetic throwing shuttle is proposed.Through the study of electromagnetic induction theory,the basic model of induction electromagnetic throwing is established.Through simulation analysis and experimental verification,it is found that electromagnetic throwing has more advantages in driving force,speed,acceleration,displacement and other characteristics compared with torsional shaft throwing.The implementation wide key factors influencing project electromagnetic suspension weft insertion are discussed,the changing rule of the weft insertion device between suspended magnetic on the thickness amplitude,frequency,current of the weft insertion,and,magnetic suspension weft insertion array mathematical model is established,and through the finite element simulation and experimental analysis,the results are consistent with those of the model.