Abstract: It is an object of the present invention to provide a draft device DR including draft rollers which, when a draft device composed of a plurality of draft roller pairs is used, can reduce the adverse effect of associated air currents resulting from the rollers rotating at high speed while maintaining a gripping force and can effectively utilize the associated air currents to suppress the spread of a bundle of fibers L. The present invention provides a draft device DR including a plurality of roller pairs that pull a bundle of fibers L while feeding the bundle downstream, wherein associated air currents resulting from a roller constituting the roller pair are passed through ends of the roller, and gaps are provided which form air passages in which the air currents act as air flows forming a prevention wall that hinders spread of the bundle of fibers fed while being drafted.

Abstract: It is an object of the present invention to provide a draft device DR including draft rollers which, when a draft device composed of a plurality of draft roller pairs is used, can reduce the adverse effect of associated air currents resulting from the rollers rotating at high speed while maintaining a gripping force and can effectively utilize the associated air currents to suppress the spread of a bundle of fibers L. The present invention provides a draft device DR including a plurality of roller pairs that pull a bundle of fibers L while feeding the bundle downstream, wherein associated air currents resulting from a roller constituting the roller pair are passed through ends of the roller, and gaps are provided which form air passages in which the air currents act as air flows forming a prevention wall that hinders spread of the bundle of fibers fed while being drafted.

Abstract: A spinning device for producing a spun yarn from a staple fiber bundle. A staple fiber bundle is supplied to a spinning nozzle via the front rollers of a draft unit. A pair of delivery rollers is positioned downstream from the spinning nozzle and spaced from the front rollers by a distance that is shorter than the length of the longest fibers in the staple fiber bundle.