False Twist Device for an Open-End Spinning Device

Abstract

A false twist device (17) for an open-end spinning device (1) to introduce a false twist in a yarn (7) has a largely tubular carcass (20) and several false twist edges (19) arranged behind one another in yarn draw-off direction (G) and inclined by an angle (α) in the carcass (20) with regard to the yarn draw-off direction (G). The several false twist edges (19) protrude in such a way into the interior of the tubular carcass (20) that the yarn (7) experiences a deflection in each one of the false twist edges (19). Additionally, the several false twist edges (19) are arranged offset in such a way in the carcass (20) in circumferential direction that the yarn (7) simultaneously experiences a spatial deflection compared to its regular yarn draw-off direction (G) through the successive deflections on the several false twist edges (19). An open-end spinning device (1) of a rotor spinning machine (2) with a yarn draw-off nozzle (16) has a false twist device (17) arranged downstream from the yarn draw-off nozzle (16) in yarn draw-off direction (G). In a method for introducing a false twist in a yarn (7) generated in an open-end spinning device (1) of a rotor spinning machine (2), the yarn (7) is drawn off through a yarn draw-off nozzle (16) and pulled through false twist edges (19) in a false twist device (17) arranged downstream from the yarn draw-off nozzle (16), as a result of which the yarn (7) is imparted a false twist. The yarn (7) is exposed to a spatial deflection compared to its regular yarn draw-off direction (G) through the false twist edges (19), in which case an additional false twist is imparted to the yarn (7).

Dependencies are inferred from the claim text.