四连杆打纬机构的筘座前心位置分析

Analysis of reed-base′s front extreme position for four-bar beating-up linkage

为织造纬纱按预期方式疏密分布的疏密纬织物,在分析四连杆打纬机构筘座前心位置影响因素的基础上,针对某型喷气织机的四连杆打纬机构,建立了打纬机构的弹性动力学模型,定量分析了打纬阻力和织机车速对前心位置的筘座弹性位移量的影响,获得了筘座弹性位移量随打纬阻力和织机车速的变化曲线,并进行了验证。结果表明:打纬阻力对筘座弹性位移量的影响较小,织机车速对筘座弹性位移量的影响稍大,但都不会明显改变打纬终了处的纬纱位置。

In order to weave the desired fabric with varied weft density, affected factors of reed-base＇s front extreme position of four-bar beating-up linkage are analyzed. Elastic dynamic model for four-bar beating-up linkage of a air-jet weaving machine is established. Influences of weaving resistance and loom speed on the reed-base＇s elastic displacement at front extreme position are studied. Curves of reed-base＇s elastic displacement versus weaving resistance and reed-base＇s elastic displacement versus loom speed are abtained and verified with experiments. The results show that influence of weaving resistance on reed-base＇s elastic displacement is small and influence of loom speed on reed-base＇s elastic displacement is slightly large, but both couldn＇t change the weft position at beating-up end obviously.