Open-end spinning device

Abstract

The invention relates to an open-end spinning apparatus for producing a Z-yarn or an S-yarn, comprising a spinning rotor rotatably mounted in a spinning rotor housing to which a vacuum is applied, and a driving unit for driving the spinning rotor to rotate leftwards or rightwards. In order to provide an open-end spinning apparatus for producing Z-yarn or S-yarn, which achieves always high yarn quality for both types of yarn, there are provided: an opening roller which can be driven to rotate leftwards and rightwards according to the rotation direction of the spinning rotor; and a Z-yarn fiber guide slot and an S-yarn fiber guide slot, which selectively connect the opening roller to the spinning rotor to guide fibers and each have a fiber outlet hole assigned to the spinning rotor and a fiber inlet hole assigned to the opening roller, wherein the fiber inlet hole and the fiber outlet hole of the Z-yarn fiber guide groove are adjacent to the left sides of the spinning rotor and the opening roller, and the fiber inlet hole and the fiber outlet hole of the S-yarn fiber guide groove are adjacent to the right sides of the spinning rotor and the opening roller.

Description

[0001] The present invention relates to a rotor spinning device for producing Z-yarns or S-yarns, comprising

[0002] - a spinning rotor which is rotatably mounted in a spinning rotor housing to which a vacuum is applied, and

[0003] - a drive unit which drives the spinning rotor to rotate left or right.

[0004] Rotor spinning devices with various designs having a rotatably mounted spinning rotor are known in the art. The known spinning rotors usually have a rotatably mounted rotor shaft, with a rotor cup arranged at one end of the rotor shaft. The spinning rotor can be driven to rotate left or right at high speed by a drive unit which drives the spinning rotor, with the drive unit being coupled to the spinning rotor for this purpose.

[0005] In order to produce S-twist or Z-twist yarns, hereinafter referred to as Z-yarns and S-yarns, the spinning rotor of the rotor spinning device can be driven to rotate left or right via the drive unit, where in the context of the present application, "rotating left" is understood to mean that the spinning rotor and the opening roller of the rotor spinning device rotate in the counterclockwise direction, and "rotating right" is understood to mean that the spinning rotor and the opening roller rotate in the clockwise direction - in each case based on a plan view of the end face of the end of the spinning rotor of the rotor spinning device which supports the rotor cup.

[0006] Essential for the production of Z-yarns and S-yarns is that the fibrous material released by the opening roller is fed in the direction of rotation via a fiber guide channel to the spinning rotor or its rotor cup. For the production of Z-yarns, the individual fibers released by the opening roller must be introduced via the fiber guide channel in the clockwise direction into the rotor cup, and for the production of S-yarns, the fibrous material is fed in the counterclockwise direction into the rotor cup. Thus, relative to the normal mounting position of the opening roller below the spinning rotor when the rotor spinning device is in the operating position, when producing Z-yarns, the fiber outlet hole of the fiber guide channel abuts the spinning rotor on the left side relative to the rotor axis (when viewed in end view of the end supporting the rotor cup), and when producing S-yarns, the fiber outlet hole of the fiber guide channel abuts the spinning rotor on the right side.

[0007] In order to ensure that in the case of an opener roller that can be driven in only one direction of rotation, the fibrous material is fed into the spinning rotor in a manner corresponding to the direction of rotation of the spinning rotor, it is known from DE 19841 406 A1 to provide a fiber chute with a fiber chute adapter, which, depending on the yarn to be produced, enables feeding to the left or right into the spinning rotor in each case according to the direction of rotation of the spinning rotor. If a Z-yarn is produced using a straight fiber chute, a fiber chute adapter is required to produce an S-yarn using this straight fiber chute, but this adapter changes the path of the fiber chute such that the fiber chute then no longer has a straight path. If a fiber chute adapter is used to produce an S-yarn, the non-straight path results in a decrease in yarn quality.

[0008] It can thus be seen that the object of the present invention is to provide a free-end spinning device for producing Z-yarns or S-yarns, which achieves consistently high yarn quality for both yarn types.

[0009] This object of the invention is achieved by a free-end spinning device having the features of claim 1. Advantageous refinements of the invention are given in the dependent claims.

[0010] The spinning device according to the invention is characterized in that

[0011] - an opener roller which can be driven to rotate left and right according to the direction of rotation of the spinning rotor, and

[0012] - a Z-yarn fiber chute and an S-yarn fiber chute which selectively connect the opener roller to the spinning rotor to guide fibers and each have a fiber outlet hole assigned to the spinning rotor and a fiber inlet hole assigned to the opener roller, wherein the fiber inlet hole and the fiber outlet hole of the Z-yarn fiber chute are adjacent to the left side of the spinning rotor and the opener roller and the fiber inlet hole and the fiber outlet hole of the S-yarn fiber chute are adjacent to the right side of the spinning rotor and the opener roller.

[0013] The direction of rotation of the opener roller determines the conveying direction of the fibers released by the opener roller, which enter the fiber inlet hole of the fiber chute and are introduced into the spinning rotor via its fiber outlet hole. Thus, the fiber inlet hole of the fiber chute is arranged on the opener roller in such a way that the released fibers enter the fiber chute via the fiber inlet hole due to the direction of rotation of the opener roller.

[0014] Depending on the rotation direction of the spinning rotor, the rotation direction of the opening roller can be selected to be counterclockwise or clockwise. This enables the spinning rotor and the opening roller to be driven in the same rotation direction. When producing Z-yarn using a right-rotating spinning rotor, the opening roller rotates accordingly to the right. Then, a Z-yarn fiber guide is used to transport the fibers from the opening roller into the spinning rotor; the fiber inlet hole of the fiber guide is arranged on the opening roller in the rotation direction of the opening roller, and the fibers are introduced into the spinning rotor via the fiber outlet hole of the fiber guide in the rotation direction of the spinning rotor.

[0015] Relative to the use position of the spinning rotor arranged below the opening roller, the Z-yarn fiber guide, together with its fiber inlet hole and fiber outlet hole, is arranged on the left side of the spinning rotor and the opening roller, where, within the context of the present application, the terms "left side" and "right side" refer to the plan view of the open-end spinning device looking towards the end including the rotor cup of the spinning rotor.

[0016] When producing S-yarn, the spinning rotor needs to be driven to rotate to the left. To optionally introduce the fiber material into the spinning rotor in the rotation direction, an S-yarn fiber guide is used, which has its fiber inlet hole and fiber outlet hole arranged on the right side of the opening roller and the spinning rotor, such that the fibers released by the left-rotating opening roller can then pass through from the fiber inlet hole arranged in the rotation direction via the fiber guide in the rotation direction, and enter the left-rotating spinning rotor via the fiber outlet hole.

[0017] The open-end spinning device according to the present invention enables the production of Z-yarn or S-yarn. Thus, depending on the yarn to be produced, in addition to the necessary adjustment of the rotation direction of the spinning rotor, the opening roller also rotates in a corresponding manner to the spinning rotor. To ensure the reliable and consistent introduction of the fiber material into the spinning rotor, depending on the yarn to be produced, a Z-yarn fiber guide or an S-yarn fiber guide can be used according to the rotation directions of the spinning rotor and the opening roller to connect the opening roller to the spinning rotor to guide the fibers.

[0018] The orientation of the fiber outlet hole allows the fiber material to be introduced into the spinning rotor in an optimal manner, and thus, high-quality Z-yarn and S-yarn can be produced using the open-end spinning device according to the present invention. The selective use of the Z-yarn fiber guide and the S-yarn fiber guide allows these fiber guides to be straight, which ensures a particularly consistent fiber flow that is particularly continuous to ensure high yarn quality. When changing the open-end spinning device from S-yarn production to Z-yarn production, in addition to changing the rotation direction of the spinning roller, it is only necessary to change the rotation direction of the opening roller and replace the fiber guide. Overall, the open-end spinning device according to the present invention thus has a high degree of variability and provides the possibility of producing Z-yarn and S-yarn with consistently high quality.

[0019] In principle, an open-end spinning device can be designed in such a way that an S-yarn fiber guide or a Z-yarn fiber guide can be used to connect the opener roller to the spinning rotor in order to guide the fibers. However, according to a particularly advantageous embodiment of the present invention, it is provided that the fiber guides are each arranged on a covering element which can be detachably arranged on the spinning rotor housing.

[0020] The covering element is designed to cover both the spinning rotor housing including the spinning rotor and preferably also to receive the opener roller, and depending on the yarn to be produced, the covering element has an S-yarn fiber guide or a Z-yarn fiber guide. The use of replaceable covering elements ensures that the open-end spinning device is set up in a special way to match the respective rotational directions of the spinning rotor and the opener roller, whereby the covering element can optimally adapt to the geometric conditions of the open-end spinning device, so that the production of high-quality Z- or S-yarns with consistent quality can be particularly reliably ensured. A large number of modification measures and facilities may not be necessary.

[0021] According to another embodiment of the present invention, it is provided that the opener rollers adapted to the fiber guides are each rotatably mounted on the covering element. According to this embodiment of the present invention, it is provided that the opener rollers required to release the fibers from the sliver and transport the released fibers into the fiber inlet holes of the fiber guides are also rotatably mounted on each of the two selectively available covering elements having an S-yarn fiber guide or a Z-yarn fiber guide. This embodiment of the present invention enables an optimal coordination of the fiber guides and the opener rollers (which are coupled to an opener roller drive when the covering element is mounted on the open-end spinning device) and the combination of the fiber guides and the opener rollers on a replaceable covering element. The opener roller drive can also be designed as a single drive and arranged on the interchangeable covering element. The changeover of the open-end spinning device from S-yarn production to Z-yarn production is additionally facilitated by the covering element being advantageously equipped with the opener roller.

[0022] According to another embodiment of the present invention, it is further provided that the covering elements each have a sliver supply device assigned to the opener roller, which sliver supply device abuts the opener roller on the right side of the covering element having a Z-yarn fiber guide and on the left side of the covering element having an S-yarn fiber guide.

[0023] According to this embodiment of the present invention, the elements of the sliver feeding device (such as the sliver suction cylinder, the feeding trough, and the sliver compressor, by means of which the sliver is supplied to the opening roller) are arranged opposite the fiber inlet holes of the fiber guide grooves on the opening roller. The sliver is guided into the supply opening of the opening roller housing via a sliver feeding cylinder driven in the same rotational direction as the opening roller, where the sliver engages with the opening roller that releases the fibers from the sliver. The contaminants of the sliver can be reliably removed from the spinning process via the conveying path of the sliver. Based on the position of the covering element when installed on the open-end spinning device, the sliver extends through the lower apex of the opening roller between the supply opening of the sliver and the fiber inlet holes of the fiber guide grooves.

[0024] Advantageously, the design of the covering element provided is in principle freely selectable. For example, these covering elements can be designed integrally with the fiber guide grooves or consist of multiple parts. According to a particularly advantageous embodiment of the present invention, it is provided that the fiber outlet holes of the Z-yarn fiber guide grooves and / or the S-yarn fiber guide grooves are formed on a fiber guide groove adapter that can be detachably connected to the covering element. According to this embodiment of the present invention, the fiber guide grooves and the covering element form a single piece or multiple pieces. The fibers are introduced into the spinning rotor via the fiber guide groove adapter, which is connected to the fiber guide groove and includes the fiber outlet holes. This embodiment of the present invention thus makes it possible to optimally adapt these covering elements to the spinning operation by means of a replaceable fiber guide groove adapter when using the advantageously provided covering elements. For example, depending on the fiber material used, it is thus possible to particularly reliably ensure that the individual fibers enter the spinning rotor at a specified angle.

[0025] Particularly advantageously, the fiber guide groove adapter is replaceably arranged in the receiving opening of the covering element, so that the fiber outlet holes can be adapted to the spinning rotor in order to particularly reliably ensure the optimal execution of the spinning process.

[0026] In addition to the advantageous use of two covering elements, one of the two covering elements being designed with a Z-yarn fiber guide channel and the other covering element being designed with an S-yarn fiber guide channel and being interchangeably arrangeable on the open-end spinning device depending on the yarn to be produced, in an improved form according to the invention, the covering element also has a receiving opening for receiving the Z-yarn fiber guide channel or the S-yarn fiber guide channel. This embodiment of the invention enables the use of a covering element designed to receive the Z-yarn fiber guide channel or the S-yarn fiber guide channel. According to this embodiment of the invention, in order to switch the open-end spinning device between S-yarn production and Z-yarn production, it is then only necessary to replace the fiber guide channel on the covering element, which covering element has a suitable opening for this purpose. The unused opening can then be closed, with a suitable closing member being provided for this purpose. Compared with the complete replacement of the covering element, the replacement of the fiber guide channel offers the advantage of a reduced storage space for the unused components (in this case the fiber guide channels) compared to the storage space for all the covering elements. Particularly preferably, the covering element for receiving the S-yarn or Z-yarn fiber guide channel has both a long-strip supply device adjacent to the opening roller on the left and a long-strip supply device adjacent to the opening roller on the right, such that the long strips can also be supplied correspondingly depending on the fiber guide channel used.

[0027] According to another embodiment of the invention, it is provided that the covering element for producing S-yarn has a design that is mirror-symmetrical to the covering element for producing Z-yarn. According to this embodiment of the invention, the covering element not only has a mirror-symmetrical shape, but also components that are optionally present on the covering element and are arranged for S-yarn production are arranged on the covering element in a mirror-symmetrical manner for Z-yarn production. In addition to the fiber guide channels, the components can also include components of the long-strip supply device and, if present, fiber guide channel adapters and receiving openings in the covering element.

[0028] This embodiment of the invention, according to which the covering element preferably has a mirror-symmetrical design relative to a vertical plane (which preferably passes through the vertical center of the open-end spinning device), such that the fiber inlet holes of the long-strip supply device and the fiber guide channels of the two covering elements are adjacent to the opening roller in a mirror-symmetrical manner and the fiber outlet holes of the fiber guide channels of the two covering elements are adjacent to the spinning rotor in a mirror-symmetrical manner, particularly ensures that Z-yarn and S-yarn can be produced with consistent quality on a modifiable open-end spinning device.

[0029] In order to release the sliver fed to the opening roller, the roller preferably has a card clothing carrier that engages with the supplied sliver and releases the fibers. According to another embodiment of the invention, it is provided that the opening roller can be detachably connected to a Z-yarn card clothing carrier or an S-yarn card clothing carrier. This embodiment of the invention enables the opening roller to be optimally designed according to the yarn to be produced, such that the card clothing carrier ensures that the fibers are from the supplied sliver as required according to the rotational direction of the opening roller. In addition to changing the card clothing carrier according to the yarn to be produced using a free-end spinning device, the detachable connection between the card clothing carrier and the opening roller also allows for an optimal adaptation to the supplied fiber material and, for example, an easy replacement of the card clothing carrier in the case of wear.

[0030] According to a particularly advantageous embodiment of the invention, it is provided that the card clothing carrier can be connected to the opening roller by means of a quick-release mechanism. This design makes it particularly easy to modify the opening roller. After changing the card clothing carrier (which can be done in a simple and time-saving manner due to the advantageously provided quick-release mechanism), the roller can immediately be used for the production of Z-yarn or S-yarn.

[0031] Examples of embodiments of the invention are explained below with reference to the accompanying drawings. In the drawings:

[0032] Figure 1a is a schematic perspective view of a free-end spinning device prepared for the production of S-yarn;

[0033] Figure 1b is for the production of Z-yarn from Figure 1a a schematic perspective view of a free-end spinning device;

[0034] Figure 2a is from Figure 1a a schematic perspective view of the details of a free-end spinning device;

[0035] Figure 2b is from Figure 1b a schematic perspective view of the details of a free-end spinning device;

[0036] Figure 3a is from Figure 1a a schematic plan view of a free-end spinning device; and

[0037] Figure 3b is from Figure 1b a schematic plan view of a free-end spinning device.

[0038] Figure 1a and Figure 1b are schematic perspective views showing the basic structure of the free-end spinning device 1 in two set states, each set state having means for the production of S-yarn ( Figure 1a ) and Z-yarn ( Figure 1b) different covering elements 10a, 10b.

[0039] The open - end spinning device 1, which is capable of producing either of two types of yarns, has a spinning rotor housing 2 in which a rotor cup 4 of a spinning rotor 3 driven by a drive unit (not shown here) rotates at high speed. The spinning rotor 3 is driven by an electric motor (not shown here). Depending on the direction of rotation of the electric motor, the spinning rotor 3 can thus be driven to rotate to the left or to the right. Here, "rotating to the left" is understood to mean that the spinning rotor 3 rotates in the counter - clockwise direction, and "driven to the right" is understood to mean that the spinning rotor 3 rotates in the clockwise direction - in each case based on a plan view of the end of the spinning rotor 3 of the open - end spinning device 1 that supports the rotor cup 4 as seen from the front shown in the drawing. During spinning, the spinning rotor housing 2 is closed by covers 22a, 22b that are connected to the covering elements 10a, 10b via fiber guide channels 6a, 6b so that the spinning vacuum necessary for spinning can be generated therein.

[0040] Below the spinning rotor 3 (based on the view shown in the drawing of the use position of the open - end spinning device 1), a covering element 10a for producing S - twist yarn or a covering element 10b for producing Z - twist yarn is arranged on the open - end spinning device 1. The covering elements 10a, 10b each have a strip release device 12. This covering element includes an opener roller housing 11, an opener roller 5 rotatably mounted within the opener roller housing 11, and a strip supply device. The strip supply device consists of a strip suction cylinder 13, and a feed chute 14 that is mounted so as to be rotatable about a pivot axis 15 can be adjusted on the strip suction cylinder. A strip compressor 16 is also arranged on the feed chute 14. In the covering element 10a for producing S - twist yarn, the strip supply member is arranged on the left side of the opener roller 5 on the covering element 10a, while in the covering element 10b for producing Z - twist yarn, the strip supply member abuts the opener roller 5 on the right side. The strip is transported into the opener roller housing 11 via a strip feed cylinder 13 that rotates in the same direction as the opener roller 5.

[0041] In order to release the fibers 21 from the supplied strip, the opener roller 5 has replaceable card clothing carriers 9a, 9b that are designed according to the yarn to be produced and according to the direction of rotation of the opener roller 5. Depending on the yarn to be produced, the released fibers 21 are transported from the opener roller 5 to the spinning rotor 3 via an S - twist fiber guide channel 6a or a Z - twist fiber guide channel 6b, and these fiber guide channels are each connected to the covering elements 10a, 10b.

[0042] The spinning rotor housing 2 and the opening roller housing 11 can be connected to each other to guide fibers via the fiber guide channels 6a, 6b, wherein the released fibers are guided through the through openings 19a, 19b running longitudinally through the fiber guide channels 6a, 6b after entering the fiber inlet holes 8a, 8b, and are introduced from the fiber outlet holes 7a, 7b into the rotor cup 4 in the region of the spinning rotor 3.

[0043] During yarn production, the rotational direction of the opening roller 5 about its axis of rotation 17 corresponds to the rotational directions 20a, 20b of the spinning rotor 3 about its axis of rotation 18. In Figure 1a 、 Figure 2a and Figure 3a In the open - end spinning device 1 shown in and intended for the production of S - twist yarn, which includes a covering element 10a, the spinning rotor 3 is connected to the opening roller 5 via the S - twist fiber guide channel 6a, wherein the S - twist fiber guide channel 6a is arranged in the covering element 10a, which can be replaceably arranged on the open - end spinning device 1. When the covering element 10a is installed, with respect to Figure 1a 、 Figure 2a and Figure 3a In the illustration in, the S - twist fiber guide channel 6a adjoins the spinning rotor 3 and the opening roller 5 on the right by means of its fiber outlet hole 7a and its fiber inlet hole 8a. By means of the opening roller 5, which rotates counter - clockwise according to the rotational direction 20a of the opening roller 5 and is connected to the card clothing carrier 9a, the fibers 21 released by the opening roller 5 are fed in the rotational direction into the spinning rotor 3 through the S - twist fiber guide channel 6a.

[0044] To convert the open - end spinning device 1 for the production of Z - twist yarn, the covering element 10a is replaced by a covering element 10b, which has a design that is mirror - symmetric with respect to the sliver supply device and the fiber guide channels 6a, 6b compared to the covering element 10a (see Figure 1b 、 Figure 2b and Figure 3b ). The rotational directions of the spinning rotor 3 and the opening roller 5 are reversed so that their rotational direction 20b is clockwise based on the drawing. The fibers 21 then released by the opening roller 5 are fed into the spinning rotor 3 through the Z - twist fiber guide channel 6b.

[0045] List of reference numerals

[0046] 1 Open - end spinning device

[0047] 2 Spinning rotor housing

[0048] 3 Spinning rotor

[0049] 4 Rotor cup

[0050] 5 Opening roller

[0051] 6a S-yarn fiber guide groove

[0052] 6b Z-yarn fiber guide groove

[0053] 7a Fiber outlet hole (S-yarn fiber guide groove)

[0054] 7b Fiber outlet hole (Z-yarn fiber guide groove)

[0055] 8a Fiber inlet hole (S-yarn fiber guide groove)

[0056] 8b Fiber inlet hole (Z-yarn fiber guide groove)

[0057] 9a Card clothing carrier (S-yarn)

[0058] 9b Card clothing carrier (Z-yarn)

[0059] 10a Covering element (S-yarn)

[0060] 10b Covering element (Z-yarn)

[0061] 11 Opener roller housing

[0062] 12 Strip release device

[0063] 13 Strip suction cylinder

[0064] 14 Feed trough

[0065] 15 Pivot axis

[0066] 16 Strip compactor

[0067] 17 Axis of rotation (opener roller)

[0068] 18 Axis of rotation (spinning rotor)

[0069] 19a Through-opening (S-yarn fiber guide groove)

[0070] 19b Through-opening (Z-yarn fiber guide groove)

[0071] 20a Direction of rotation (S-yarn)

[0072] 20b Direction of rotation (Z-yarn)

[0073] 21 Fiber

[0074] 22a Covering (S-yarn)

[0075] 22b Covering (Z-yarn)

Claims

1. An open - end spinning device (1) for producing Z - twist yarn or S - twist yarn, comprising - a spinning rotor (3) rotatably mounted in a spinning rotor housing (2) to which a vacuum is applied, and - a drive unit for driving the spinning rotor (3) to rotate left or right, Characterized in that - an opener roller (5) which can be driven to rotate left or right according to the rotation direction of the spinning rotor (3), and - a Z - twist fiber guide groove (6b) and an S - twist fiber guide groove (6a) which selectively connect the opener roller (5) to the spinning rotor (3) to guide fibers and each have a fiber outlet hole (7a, 7b) assigned to the spinning rotor (3) and a fiber inlet hole (8a, 8b) assigned to the opener roller (5), wherein the fiber inlet hole (8a, 8b) and the fiber outlet hole (7a, 7b) of the Z - twist fiber guide groove (6b) are adjacent to the left side of the spinning rotor (3) and the opener roller (5), and the fiber inlet hole and the fiber outlet hole of the S - twist fiber guide groove (6a) are adjacent to the right side of the spinning rotor and the opener roller.

2. The open-end spinning device (1) according to claim 1, characterized in that, The fiber guide grooves (6a, 6b) are each arranged on covering elements (10a, 10b) which can be detachably arranged on the spinning rotor housing (2).

3. The open-end spinning device (1) according to claim 1 or claim 2, characterized in that, The opener rollers (5) adapted to the fiber guide grooves (6a, 6b) are each rotatably mounted on the covering elements (10a, 10b).

4. The open-end spinning device (1) according to one or more of the preceding claims, characterized in that, The covering elements (10a, 10b) each have a strip supply device assigned to the opener roller (5), and the strip supply device is adjacent to the opener roller (5) on the right side of the covering element (10b) having the Z - twist fiber guide groove (6b) and on the left side of the covering element (10a) having the S - twist fiber guide groove (6a).

5. A free-end spinning device (1) according to one or more of the preceding claims, characterized in that, The fiber outlet holes (7a, 7b) of the Z - twist fiber guide groove (6b) and / or the S - twist fiber guide groove (6a) are formed in a fiber guide groove adapter which can be detachably connected to the covering elements (10a, 10b).

6. The open-end spinning device according to claim 5, characterized in that, The fiber guide groove adapter for adapting the fiber outlet holes (7a, 7b) relative to the spinning rotor (3) is replaceably arranged in the receiving opening of the covering elements (10a, 10b).

7. A free-end spinning device according to one or more of the preceding claims, characterized in that, The covering elements (10a, 10b) have receiving openings for receiving the Z - twist fiber guide groove (6b) or the S - twist fiber guide groove (6a).

8. The open-end spinning device (1) according to one or more of the preceding claims, characterized in that The covering element (10a) for producing S - twist yarn has a design which is mirror - symmetric to the covering element (10b) for producing Z - twist yarn.

9. A free-end spinning device (1) according to one or more of the preceding claims, characterized in that A Z - twist card clothing carrier (9b) and an S - twist card clothing carrier (9a) which can be selectively and detachably connected to the opener roller (5).

10. The open - end spinning device (1) according to claim 9, characterized in that, The card clothing carriers (9a, 9b) can be connected to the opener roller (5) by means of a quick - release mechanism.

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