2軸型ディスクフリクション仮撚の施撚部における糸径路と糸張力のモデル化

摘要

Double-stack disk friction units were used to produce good, high-crimp yarn like wool and the results were compared to conventional triple-stack disk friction units. The quality of false-twist textured yarn from disk friction spindles is very strongly influenced by unit operating conditions and untwisting tension. The authors previously proposed a method to derive tension and untwisting tension in the yarn given the twisting tension and yarn path in double-stack disk friction units. In this study our goal was to calculate both yarn path and yarn tension. We were able to compare and confirm that the calculated yarn path and yarn tension closely matches experimental results. In addition, we succeeded in using our model to predict conditions for guide hole to produce false-twist yarn. The validity of our model was proven by the results. We have succeeded for the first time in calculating approximate yarn path and yarn tension for the false-twist process in disk friction spindle units. Our results should be helpful in designing disk friction spindle units.%回転体の表面摩擦を利用して直接糸に撚りを与える摩擦仮rn撚法には，大きく分けて回転する円板に糸を外接させる外接rn仮撚（以下，ディスクフリクション仮撚と呼ぶ）と，回転さrnせたベルトを交差するように設置してその摩擦を利用するベrnルトニップ仮撚がある．ディスクフリクション仮撚においてrnは，3本の軸に複数枚のディスクを設置した3軸ディスクフrnリクション仮撚機（以下，3軸型と呼ぶ）が主流となっていrnる．