Yarn Draw-Off Unit of a Rotor Spinning Machine and Method for Producing a Yarn with the Aid of a Rotor Spinning Machine

Abstract

The invention relates to a yarn draw-off unit of a rotor spinning machine, having a draw-off nozzle ( 21 ) which projects into a spinning chamber ( 22 ) of the rotor spinning machine, and a draw-off conduit ( 23 ) for a yarn ( 5 ) produced within the spinning chamber ( 22 ), the draw-off conduit ( 23 ) being arranged downstream of the draw-off nozzle ( 21 ) in the draw-off direction of the yarn ( 5 ) that is drawn off from the spinning chamber ( 22 ). The draw-off conduit ( 23 ) comprises a helical section ( 24 ), with the aid of which a false twist can be imparted to the yarn ( 5 ) within the draw-off conduit ( 23 ). Furthermore, a draw-off nozzle for a rotor spinning machine is described, the draw-off conduit ( 23 ) of which comprises a helical section ( 24 ), with the aid of which a false twist can be imparted to the yarn ( 5 ) within the draw-off nozzle ( 21 ). Finally, the invention relates to a method for producing a yarn ( 5 ) with the aid of a rotor spinning machine. The method is characterised in that the yarn ( 5 ) is exposed to torque within a helical section ( 24 ) of the draw-off conduit ( 23 ), said torque causing the yarn ( 5 ) to rotate about its longitudinal axis, the direction of rotation of the rotation corresponding to the direction of rotation that is imparted to the yarn ( 5 ) by the spinning rotor ( 3 ).

1 . Yarn draw-off unit of a rotor spinning machine that has a draw-off nozzle ( 21 ) projecting into a spinning chamber ( 22 ) of the rotor spinning machine, and a draw-off conduit ( 23 ) for yarn ( 5 ) produced inside the spinning chamber ( 22 ), wherein the draw-off conduit ( 23 ) is arranged downstream of the draw-off nozzle ( 21 ) in the draw-off direction of the yarn ( 5 ) that is drawn off from the spinning chamber ( 22 ), characterized in that the draw-off conduit ( 23 ) has a helical section ( 24 ) with whose help a false twist can be imparted to the yarn ( 5 ) inside the draw-off conduit ( 23 ). 
     
     
         2 - 20 . (canceled)