Channel plate adapter and open-end spinning device with a channel plate adapter

Abstract

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.

Claims

1. A channel plate adapter 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 comprising: 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 comprising 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; and wherein the bend changes direction of the second section relative to the first section such that the second section is angled relative to the first section towards the rotor in a direction counter to rotation of the rotor.

2. The channel plate adapter according to claim 1, further comprising a draw-off element through which a yarn formed by the rotor is led out of the rotor.

3. The channel plate adapter according to claim 1, wherein the first section of the output fiber channel and the second section of the output fiber channel enclose an angle () between 170 and 179.

4. The channel plate adapter according to claim 1, wherein the bend also orients the second section of the output fiber channel relative to the first section of the output fiber channel in a direction towards a base of the rotor.

5. The channel plate adapter according to claim 4, wherein the second section of the output fiber channel is inclined towards the rotor base at an angle between 1 and 25.

6. The channel plate adapter according to claim 1, wherein the output fiber channel is formed in a tapered manner from the inlet side to the outlet side.

7. The channel plate adapter according to claim 1, wherein the output fiber channel comprises a cross-section area measuring between 10 mm.sup.2 and 30 mm.sup.2 at the outlet side.

8. The channel plate adapter according to claim 1, wherein the output fiber channel comprises a slot-shaped cross-section perpendicular to a longitudinal axis of the output fiber channel between the bend and the outlet side.

9. The channel plate adapter according to claim 8, wherein a largest inner extension of the slot-shaped cross-section of the output fiber channel is oriented parallel to a plane of rotation of the rotor.

10. The channel plate adapter according to claim 8, wherein a largest inner extension of the slot-shaped cross-section of the output fiber channel is oriented perpendicular to a plane of rotation of the rotor.

11. An open-end spinning device of a spinning machine, comprising: a rotor, the rotor rotatably mounted in a rotor housing; a fiber channel that guides fibers into a rotor, the fiber channel further comprising an input fiber channel arranged in an opening roller housing, and an output fiber channel arranged in a channel plate adapter that is insertable into a cover of the rotor housing; and wherein the channel plate adapter is in accordance with claim 1.

12. The open-end spinning device according to claim 11, further comprising a transition bend formed between the input fiber channel and the output fiber channel.

13. The open-end spinning device according to claim 12, wherein the input fiber channel and the output fiber channel enclose an angle () between 155 and 180 with the output fiber channel bent in a direction of rotation of the rotor.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further advantages of the invention are described in the following embodiments. The following is shown:

(2) FIG. 1 is a top view of a schematic opening roller, an opening roller housing, a fiber channel and a rotor, and

(3) FIG. 2 is a lateral sectional view of a cover for covering a rotor housing.

DETAILED DESCRIPTION

(4) Reference will now be made to embodiments of the invention, one or more examples of which are shown in the drawings. Each embodiment is provided by way of explanation of the invention, and not as a limitation of the invention. For example features illustrated or described as part of one embodiment can be combined with another embodiment to yield still another embodiment. It is intended that the present invention include these and other modifications and variations to the embodiments described herein.

(5) FIG. 1 shows a top view of a schematic opening roller 10, an opening roller housing 11, a fiber channel and a rotor 2 that rotates in a plane of rotation 22. Herein, the opening roller 10 is rotatably arranged in the opening roller housing 11 and detaches a fiber strand that is not shown here, such that individual fibers are formed. In the opening roller housing 11, an input fiber channel 12 is arranged, which is preferably formed as an insert 4 that is insertable into the opening roller housing 11. A channel plate adapter 1, which features an output fiber channel 3, is attached to the opening roller housing 11, Thereby, the input fiber channel 12 transitions into the output fiber channel 3, and both together form the fiber channel, which guides the individual fibers of the opening roller 10 to the rotor 2. The output fiber channel 3 also features an inlet side 5, at which the individual fibers pass over from the input fiber channel 12 into the output fiber channel 3, and an outlet side 6, at which the individual fibers leave the output fiber channel 3 and arrive in the rotor 2.

(6) Herein, the channel plate adapter 1 is used in a cover (not shown) of a rotor housing, which closes the rotor housing. In addition, the rotor 2 features a fiber-collecting groove 13 (see FIG. 2), in which the individual fibers slide as a result of centrifugal forces and combine to form a yarn. The rotor 2 rotates in a direction of rotation DR, and thereby generates the centrifugal forces. The finished spun yarn is guided through a draw-off element (not shown here) from the rotor 2. Thus, the quality of the individual fibers 4 guided into the rotor 2 has a significant influence on the quality of the spun yarn.

(7) To increase the quality of the yarn, the channel plate adapter 1 in accordance with the invention features a bend 7, which is arranged between the inlet side 5 and the outlet side 6. At this, the bend splits the output fiber channel 3 into a first section 8, which is formed between the inlet side 5 and the bend 7, and a second section 9, which is formed between the bend 7 and the outlet side 6. Thus, the fibers initially flow first through the first section 8 and subsequently through the second section 9 of the output fiber channel 3. The bend 7 is formed in such a manner that the second section 9 is bent with respect to the first section 8 against the direction of rotation DR of the rotor 2. In this schematically shown version, the rotor 2 rotates clockwise, whereas the bend 7 is formed in such a manner that the second section 9 is folded counter to the clockwise direction.

(8) Furthermore, the first section 8 with the second section 9 encloses an angle , which may be formed between 170 and 179, in particular between 173 and 177, preferably 175.6, (it must be noted here that, in FIG. 1, for improved illustration, the angle has a significantly lower value).

(9) The bend 7 leads to the fact that, upon the transition from the first section 8 to the second section 9 of the output fiber channel 3, the individual fibers run to an inner wall 14 of the second section 9. At this, the individual fibers slide along such inner wall 14 up to the outlet side 6 of the output fiber channel 3, which is associated with friction. Due to the friction between the individual fibers and the inner wall 14, the individual fibers are inhibited in the acceleration that the rotating rotor 2 exerts on the individual fibers. If the individual fibers exit the outlet side 6 of the output fiber channel 3, they initially experience an acceleration by the rotor 2 at a front part, at which the individual fibers are directed to the fiber-collecting groove 13. The rotor 2 pulls (so to speak) the individual fibers from the output fiber channel 3. However, at a rear part, at which the individual fibers are directed away from the fiber-collecting groove 13, they are inhibited in their acceleration by the friction with the inner wall 14 of the second section 9. Such a difference between the acceleration at the front part of the individual fibers and at the rear part of the individual fibers leads to a drawing of the individual fibers 4. This drawing leads to an increase in the quality of the subsequently spun yarn.

(10) A further effect arises from the bend 7, since, upon exiting from the outlet side 6, the individual fibers are pulled over an edge 16 of the outlet side 6. Herein, the edge 16 is arranged between the inner wall 14, on which the individual fibers slide along, and the outlet side 6. Thereby, any irregularities, such as fiber bends, arising from the individual fibers are also smoothed out.

(11) Furthermore, a transition bend 15 is arranged between the input fiber channel 12 and the output fiber channel 3, whereas the output fiber channel 3, in particular its first section 8, with the input fiber channel 12, enclose an angle between 155 and 180, in particular between 170 and 180. Thereby, the individual fibers may be guided through the transition bend 15 at an inner wall of the first section 8 of the output fiber channel 3, such that the acceleration of the individual fibers in the output fiber channel 3 is further inhibited. Thereby, the quality of the yarn that is spun is further improved. In an alternative version of the channel plate adapter 1 and the opening roller housing 11, the input fiber channel 12 and the output fiber channel 13 could also be formed in such a manner that the angle has a value greater than 180.

(12) FIG. 2 shows a lateral sectional view of a channel plate adapter 1 and a section of an opening roller housing 11. The channel plate adapter 1 features the output fiber channel 3, which features the inlet side 5 and the outlet side 6. Stepping out of the outlet side 6, the individual fibers exit the fiber channel output 3. One part of the channel plate adapter 1 extends through a rotor opening 18 into the rotor 2, such that the individual fibers arrive directly in the rotor 2. Upon exiting the output fiber channel 3, the individual fibers first encounter a rotor wall 19, which delimits the rotor 2 from the inside. The output fiber channel 3 has a largest inner cross-sectional diameter 21 as indicated in FIG. 2. Upon the impingement of the individual fibers on the rotor wall 19, they are accelerated, since the rotor 2 and thus the rotor wall 19 feature a higher rotational speed than the individual fibers upon exiting the output fiber channel 3. As also described in FIG. 1, the individual fibers slide on the inner wall 14 of the output fiber channel 3 along the outlet side 6. Friction arising between the individual fibers and the inner wall 14 inhibits the acceleration of the individual fibers 4. The accelerating effect of the rotor wall 19 and the acceleration-inhibiting effect of the inner wall 14 (or their friction with the individual fibers 4) leads to a drawing of the individual fibers 4, Thereby, irregularities are drawn out of the individual fibers. The quality of the yarn that is formed in such a manner is increased.

(13) In addition, the output fiber channel 3 has an angle in the direction of a rotor base 17. Thus, with its outlet side 6, the output fiber channel 3 is inclined to the rotor base 17. Thereby, the individual fibers are better guided into the rotor 2. In particular, this can prevent the individual fibers from escaping out of the rotor opening 18 because of the directed pulse of the individual fibers in the direction of the rotor base 17.

(14) In this embodiment, a second bend 20 is formed between the input fiber channel 12 and the output fiber channel 3. However, such second bend 20 could also be arranged between the inlet side 5 and the outlet side 6. In particular, the second bend 20 could also be arranged at the location of the bend 7 in accordance with the invention (see FIG. 1).

(15) If the individual fibers arrive in the fiber-collecting groove 13, they are spun into a yarn and guided out of the rotor 2 by a draw-off element (not shown).

(16) This invention is not limited to the illustrated and described embodiments. Variations within the scope of the claims, just as the combination of characteristics, are possible, even if they are illustrated and described in different embodiments.

LIST OF REFERENCE SIGNS

(17) 1 Channel plate adapter 2 Rotor 3 Output fiber channel 4 Insert 5 Inlet side 6 Outlet side 7 Bend 8 First section 9 Second section 10 Opening roller 11 Opening roller housing 12 Input fiber channel 13 Fiber-collecting groove 14 Inner wall 15 Transition bend 16 Edge 17 Rotor base 18 Rotor opening 19 Rotor wall 20 Second bend Angle between the first section and the second section Angle between the input fiber channel and the output fiber channel Angle of the output fiber channel in the direction of the rotor base