假捻集聚纺假捻器位置及结构参数的优化

Optimization of gauge and structural parameters of false twister of false-twist compact spinning method

为对假捻集聚纺假捻器的作用有更深刻的认识,采用响应曲面方法分析假捻器的位置及结构参数对成纱性能的影响,并采用满意度函数方法对上述参数进行多响应优化。结果表明:纱线的条干CV值主要受假捻腔最小曲率半径的影响;假捻器转速比和假捻腔的最小曲率半径对纱线毛羽指数的影响作用比较明显;实验研究的3个参数对纱线断裂强度和断裂伸长率都有影响。满意度函数多响应优化结果显示,当假捻器转速比为0.367～0.374,假捻器隔距为11 mm,假捻腔的最小曲率半径为18.2～18.3 mm时,纱线的整体质量最好。

In order to have a clear understanding of the function of the false twister used in the false-twist compact spinning method,the response surface methodology was used to study the influences of the gauge and structural parameters of the false twister on the properties of resultant yarns.Afterwards,the optimal parameter settings were found by employing the desirability function approach.The results showed that yarn evenness was mostly affected by the minimum curvature radius of the false-twist channel,while the rotational speed ratio of false twister and minimum curvature radius have remarkable influences on yarn hairiness index.All of the three parameters under investigation have certain effects on the breaking strength and breaking elongation of yarns.The optimization result indicated that when the rotational speed ratio is 0.367-0.374,the gauge of the false twister is set as 11 mm and the minimum curvature radius of the false-twist channel is 18.2-18.3 mm,the resultant yarns will have a relatively better quality.