A thread draw-off nozzle for an open-end spinning device includes a nozzle insert configured to deflect a yarn produced by the open-end spinning device. A nozzle frame fixes the thread draw-off nozzle in the open-end spinning device. The nozzle frame includes a cylindrical shank, which has a centering diameter and a length that is shorter than half the centering diameter.

A thread draw-off nozzle for an open-end spinning device includes a nozzle insert configured to deflect a yarn produced by the open-end spinning device. A nozzle frame fixes the thread draw-off nozzle in the open-end spinning device. The nozzle frame includes a cylindrical shank, which has a centering diameter and a length that is shorter than half the centering diameter.

Methods, system, and apparatus for producing an actuator device are disclosed. The method may include twisting a muscle fiber; coiling the twisted muscle fiber about a mandrel; securing the muscle fiber onto the mandrel using a securing means; heating the muscle fiber to a predetermined temperature using a heating means; and removing the coiled muscle fiber from the mandrel. The twisting, coiling, securing, heating, and removing is a process that is continued until the muscle fiber is a desired length.

Methods, system, and apparatus for producing an actuator device are disclosed. The method may include twisting a muscle fiber; coiling the twisted muscle fiber about a mandrel; securing the muscle fiber onto the mandrel using a securing means; heating the muscle fiber to a predetermined temperature using a heating means; and removing the coiled muscle fiber from the mandrel. The twisting, coiling, securing, heating, and removing is a process that is continued until the muscle fiber is a desired length.

A channel plate adapter is provided for use in a cover of a rotor housing of an open-end spinning device, wherein a rotor is rotatably arranged in the rotor housing. The channel plate adapter includes an output fiber channel that conveys fibers to the rotor, the output fiber channel having an inlet side where fibers enter and an outlet side from which the fibers exit towards the rotor. The output fiber channel further includes a bend between the inlet side and the outlet side, the bend splitting the output fiber channel into a first section formed between the inlet side and the bend, and a second section formed between the bend and the outlet side. The bend changes direction of the second section relative to the first section such that the second section is oriented against a direction of rotation of the rotor.

A channel plate adapter is provided for use in a cover of a rotor housing of an open-end spinning device, wherein a rotor is rotatably arranged in the rotor housing. The channel plate adapter includes an output fiber channel that conveys fibers to the rotor, the output fiber channel having an inlet side where fibers enter and an outlet side from which the fibers exit towards the rotor. The output fiber channel further includes a bend between the inlet side and the outlet side, the bend splitting the output fiber channel into a first section formed between the inlet side and the bend, and a second section formed between the bend and the outlet side. The bend changes direction of the second section relative to the first section such that the second section is oriented against a direction of rotation of the rotor.

The invention relates to a thread draw-off nozzle (1) for an open-end rotor spinning device with a front surface (16), a nozzle bore (6) and a funnel-shaped yarn deflection surface (5) connecting the front surface (16) and the nozzle bore (6). The front surface (16) adjoins the yarn deflection surface (5), and the front surface (16) and the yarn deflection surface (5) form an effective diameter (D.sub.W) of the thread draw-off nozzle (1). The effective diameter (D.sub.W) of the thread draw-off nozzle (1) is less than 8 mm, and the yarn deflection surface (5) features a radius of curvature (R) of less than 2.5 mm.

The invention relates to a thread draw-off nozzle (1) for an open-end rotor spinning device with a front surface (16), a nozzle bore (6) and a funnel-shaped yarn deflection surface (5) connecting the front surface (16) and the nozzle bore (6). The front surface (16) adjoins the yarn deflection surface (5), and the front surface (16) and the yarn deflection surface (5) form an effective diameter (D.sub.W) of the thread draw-off nozzle (1). The effective diameter (D.sub.W) of the thread draw-off nozzle (1) is less than 8 mm, and the yarn deflection surface (5) features a radius of curvature (R) of less than 2.5 mm.

A thread draw-off nozzle for an open-end rotor spinning device includes an entrance-side nozzle funnel and an exit-side nozzle bore adjoining the nozzle funnel. A plurality of notches are arranged in the nozzle funnel and extend essentially radial to the nozzle bore. Each notch has an inlet wall, a baffle wall, a radially outer notch inlet, and a radially inner notch outlet. Each notch further includes an essentially flat notch bottom arranged between the inlet wall and the baffle wall.

A thread draw-off nozzle for an open-end rotor spinning device includes an entrance-side nozzle funnel and an exit-side nozzle bore adjoining the nozzle funnel. A plurality of notches are arranged in the nozzle funnel and extend essentially radial to the nozzle bore. Each notch has an inlet wall, a baffle wall, a radially outer notch inlet, and a radially inner notch outlet. Each notch further includes an essentially flat notch bottom arranged between the inlet wall and the baffle wall.