Rotor spinning unit for the spinning of mixed material yarn

摘要

A spinning unit for the rotor spinning of mixed material yarns, which solves the problem of the excessive separation of individual heavy fibres in mixed material before the individual fibres are processed in a spinning rotor 1 and at the same time the problem of fouling the spinning rotor 1 and its gathering channel 4 with dirt, comprises on the one hand a spinning rotor 1 with a gathering channel 4 which is bounded by an overflow wall 7 inclined at an angle α of between 0 and 18 degrees with respect to the plane perpendicular to one axis of spinning rotor 1, which is attached on one side to a chute wall 3 and on the other side at the arch-shaped edge 8 of gathering channel 4 to an opposite boundary wall 9 in which case boundary wall 9 diverges from an inner wall 6 of a base 5 of spinning rotor 1 at an angle β of between 40 and 90 degrees maintaining a width A of between 0.5 and 2 mm in gathering channel 4 and a radius R of between 0.15 mm and 0.5 mm at arch-shaped edge 8, the centre S of which is spaced at a distance of between 0.5 mm and 1.4 mm from a plane of the inner wall 6 of base 5 of spinning rotor 1 in such a way that the section 100 for feeding individual fibres with the help of a wall of an interchangeable insert 122 is provided with an expulsion slot 110 and a separating edge 108 which lies at a distance E of between 1 mm and 10 mm from the transverse axis 120 of a separating roller 106 in the direction of spinning roller 1, in which case the width F of expulsion slot 110 is between 5 mm and 10 mm. IMAGE