METHOD FOR CLEANING AN AIR SPINNING DEVICE OF A SPINNING STATION AND SUCH AN AIR SPINNING DEVICE

Description

[0001] The invention relates to a method for cleaning an air-spinning device of a spinning station and to such an air-spinning device for producing an air-spun thread from a supplied fiber band, with a thread forming unit with a thread forming element that can be arranged or is arranged in a vortex chamber of a nozzle unit and the nozzle unit with at least one air nozzle aligned in the direction of the vortex chamber in such a way that an air flow emerging from the air nozzle applies a rotational flow to the fiber sliver that can be fed or is fed into the vortex chamber.

[0002] Spinning stations and air-jet spinning machines consisting of a plurality of spinning stations arranged side by side are known in a variety of designs from the prior art. Along with rotor spinning machines, air-jet spinning machines are among the most commonly used machines for producing thread from a fiber material.

[0003] In air-jet spinning, a fiber sliver is typically drawn using a drafting system to achieve the desired yarn count and then fed to an air-jet spinning device. Within the air-jet spinning device, the outer fibers of the fiber strand are wound around the inner core fibers of the fiber sliver using a rotating flow generated by one or more air jets, thereby forming the wrapping fibers that determine the desired thread strength. This creates a thread that can then be drawn off through an outlet opening of the air-jet spinning device and wound onto a tube, for example.

[0004] Due to the process, blockages or contamination of the air-jet spinning device, for example, the air jets or an area immediately in front of them, can occur at irregular intervals during the spinning process. These blockages or contaminations primarily result from loose fiber material from the sliver accumulating in front of the air jets, preventing the surrounding fibers from being wound around the core fibers in the specified manner. Due to the importance of the wrapping fibers for thread strength, this results in the thread emerging from the air-jet spinning device no longer having the required thread strength.

[0005] For simple troubleshooting, it is already known from EP 3 048 191 A1 to open the air spinning device for cleaning, wherein the thread forming unit with its thread forming element arranged in the vortex chamber of the nozzle unit, for example a spinning cone, is adjusted relative to the nozzle unit, whereby the interior of the air spinning device is accessible and cleanable for the operating personnel.

[0006] An air spinning device according to the preamble of claim 1 is known, for example, from document EP 3 048 191 A2.

[0007] Document CH 713 499 A2 discloses an air-jet spinning machine with a spinning station comprising a frame on which functional units such as the drafting system and the air-jet spinneret are arranged, fastened, and / or mounted. The air-jet spinneret comprises a thread-forming unit with a thread-forming element and a nozzle unit, wherein the thread-forming unit is mounted so as to be linearly displaceable relative to the nozzle unit between a closed operating position and a cleaning position. In the cleaning position, the thread-forming element protrudes into the nozzle unit and is spaced from the fiber sliver inlet of the nozzle unit and the swirl chamber at such a distance that the swirl chamber and the fiber sliver inlet can be cleaned using supplied compressed air. In the cleaning position, the thread-forming element is engaged with the nozzle unit.

[0008] Document EP 2 573 220 A2 discloses an air-jet spinning device with a yarn forming unit and a nozzle unit according to the preamble features of claim 1. The yarn forming unit and the nozzle unit are movable relative to one another. For this purpose, the yarn forming unit is coupled via a first pivot lever, and the nozzle unit is coupled via a second pivot lever, wherein the first and second pivot levers are mounted in a common pivot bearing with an identical axis of rotation. The yarn forming unit is moved into an open position spaced from the nozzle unit exclusively via a pivoting movement. The same applies to the movement of the entire air-jet spinning device.

[0009] Document EP 0 854 214 A2 relates to an air-jet spinning device with a yarn forming unit and a nozzle unit, wherein the yarn forming unit comprises a yarn forming element that projects into a swirl chamber of the nozzle unit. The yarn forming unit is constructed in several parts, with a support frame carrying the yarn forming element being rigidly connected to a sliding frame via a bolt connection. The sliding frame sits on an outer nozzle frame and has a guide opening in which a guide pin is loosely arranged. The guide pin comprises a laterally projecting pin that engages a pivot lever.By pivoting the pivot lever in a pivot plane extending parallel to the longitudinal axis of the guide pin, the thread forming unit can be separated from the nozzle part or coupled to the nozzle part, thereby enabling a linear displacement of the thread forming unit relative to the stationary nozzle unit.

[0010] Furthermore, an air-jet spinning device is previously known from the documents JP 2019 044306 A, WO 2006 / 063482 A1, EP 2 949 793 A2 and WO 2018 / 228864 A1, which each disclose a mounting of the air-jet spinning device away from a drafting system assigned to the air-jet spinning device.

[0011] The invention is based on the object of providing a method for cleaning an air spinning device of a spinning station and an air spinning device which enable a particularly simple and effective cleaning of the air spinning device.

[0012] The invention solves the problem by an air spinning device having the features of claim 1 and by a method for cleaning an air spinning device having the features of claim 9. Advantageous developments of the spinning station and the method are specified in the respective dependent claims.

[0013] A characteristic of the air spinning device according to the invention is that the air spinning device is designed to be linearly displaceable and / or pivotable in the open cleaning position with the thread forming unit and the nozzle unit following the opening movement of the thread forming unit, wherein a drafting device for feeding the fiber sliver is assigned to the air spinning device, wherein the air spinning device is mounted on the drafting device in a rotatable and / or pivotable manner for displaceability and / or pivotability relative to the drafting device in the open cleaning position.

[0014] A key feature of the air-jet spinning device is that it has at least two structural units that are adjustable relative to one another, thus allowing the air-jet spinning device to be opened, thus making it possible to clean the interior. These structural units are the nozzle unit and the thread-forming unit. The nozzle unit has at least one air nozzle directed toward a vortex chamber, the exiting air stream of which acts on the fiber sliver that can be arranged or is arranged in the nozzle unit in such a way that it is subjected to a rotational flow, by means of which the outer fibers of the fiber sliver are wound around the core fibers. The thread-forming unit has a thread-forming element, e.g. a spinning cone.In the operating position, the yarn forming unit is located in a position relative to the nozzle unit in which the yarn forming element is arranged within the vortex chamber of the nozzle unit. The yarn formed in the air spinning device due to the rotational flow generated by one or more air nozzles is removed via the yarn forming element, in particular via a yarn withdrawal channel formed with the yarn forming element, for example, by being guided through a central opening of a hollow spinning cone and withdrawn from the spinning device at the outlet opening of the yarn forming element.

[0015] According to the invention, the thread-forming unit with the thread-forming element is mounted so as to be linearly displaceable relative to the nozzle unit between the closed operating position and an open cleaning position of the air-jet spinning device, wherein the thread-forming element, e.g., the spinning cone, is guided out of the vortex chamber. According to the invention, following the opening movement, namely in the cleaning position of the air-jet spinning device, the device is designed to be linearly displaceable and / or pivotable, i.e., the nozzle unit and the thread-forming unit are displaced and / or pivoted together in the open cleaning position.

[0016] This inventive embodiment of the invention allows particularly simple and convenient access to the interior of the air-jet spinning device, which can then be cleaned easily and quickly, for example, either automatically or by operating personnel. Relocating the open air-jet spinning device offers the particular possibility of adjusting the open air-jet spinning device to an easily accessible position, so that contaminants can be removed and conveyed away from the spinning station in a particularly simple and reliable manner. The ability to move and / or pivot the open air-jet spinning device fundamentally enables an optimal arrangement for manual or automated cleaning of the air-jet spinning device and, if applicable, also of the upstream drafting system.

[0017] The design of the displacement and / or pivotability of the air-jet spinning device in the open cleaning position is fundamentally freely selectable. For example, it is possible to mount the air-jet spinning device in a suitable manner at the spinning station, e.g., a spinning station frame, using suitable bearing elements. However, according to the invention, the air-jet spinning device is mounted on a drafting system assigned to the air-jet spinning device for relative displacement and / or pivotability in the cleaning position, and is designed to be linearly displaceable and / or pivotable relative to the drafting system.

[0018] A corresponding embodiment of the invention makes it possible to align the air-jet spinning device directly with the upstream drafting system that feeds the fiber sliver. This ensures, in a particularly reliable manner, that after cleaning the air-jet spinning device and subsequent transfer of the air-jet spinning device to the operating position, the air-jet spinning device is aligned in a position relative to the drafting system that is optimal for the spinning process. Furthermore, the arrangement on the drafting system allows for simple, movable and / or pivotable mounting on the drafting system, eliminating the need for alternative bearings at the spinning station.

[0019] The linear displacement and / or pivotability of the open air-spinning device in the cleaning position relative to the drafting system can be carried out manually, for example, by the operating personnel, who displace the open air-spinning device according to the intended adjustability and then carry out the necessary cleaning measures on the air-spinning device.

[0020] According to a particularly advantageous embodiment of the invention, however, a drive unit is provided for the automated displacement and / or pivoting of the air-jet spinning device in the cleaning position. Automated displacement of the opened air-jet spinning device particularly ensures reliable positioning of the air-jet spinning device in an optimal position for cleaning. Operating errors by operating personnel can be particularly prevented by an automated drive unit. The design of the drive unit is fundamentally freely selectable, with pneumatic drive units also being possible, for which the compressed air usually present at the spinning stations can be used, thus eliminating the need for additional drive means. Alternatively, however, it is also possible to use electric motor or pneumatic drive units.

[0021] The longitudinal displacement of the thread forming unit relative to the nozzle unit for moving the air spinning device from the operating position to the cleaning position can in principle be achieved in any desired manner. However, according to a particularly advantageous embodiment of the invention, the thread forming unit is linearly displaceable relative to the nozzle unit in the longitudinal axis direction of the thread forming element, i.e. in the elongated extension direction of the thread forming element, which corresponds to a withdrawal direction of the thread through a withdrawal channel formed within the thread forming element. A correspondingly aligned opening movement is characterized in that the thread forming element, e.g.The spinning cone disengages from the nozzle unit particularly reliably, and good accessibility to the interior of the air-jet spinning device is provided after a relatively short opening movement, enabling reliable cleaning. The displacement preferably occurs in the drafting plane and running direction of the fiber sliver, so that lateral movement spaces for moving the air-jet spinning device from the operating position to the cleaning position at the spinning station are eliminated.

[0022] According to the invention, it is further provided that the thread forming unit is mounted on a guide element having a guide section so that it can be linearly displaced relative to the nozzle unit. The use of one or more guide elements particularly secures the adjustment movements of the air-jet spinning device between the operating position and the cleaning position. The guide element particularly reliably ensures that, after a return displacement from the rest position to the operating position, the thread forming unit and the nozzle unit are arranged relative to one another in such a way that the spinning process within the air-jet spinning device can be resumed without disruption. The guide element particularly reliably prevents lateral displacements that could lead to disruption.

[0023] As with the displacement and / or pivoting of the air-spinning device in the cleaning position, the displacement of the air-spinning device between the operating position and the cleaning position can also be carried out manually by the operating personnel. According to a particularly advantageous embodiment of the invention, however, a drive unit, in particular a pneumatically acting drive unit, is provided for adjusting the

[0024] Air spinning device provided between the operating position and the cleaning position.

[0025] The use of a drive unit ensures reliable adjustment of the air-jet spinning device from the operating position to the cleaning position, and in particular, a return to the operating position, thus ensuring that the spinning process runs smoothly after being returned to the operating position and resuming. The use of a pneumatic drive unit is characterized by the fact that the compressed air usually already available at spinning stations can be used to operate the drive unit, eliminating the need for additional supply lines to operate the drive unit.

[0026] The arrangement of the thread-forming element, e.g., a spinning cone, on the thread-forming unit is fundamentally freely selectable. For example, it can be formed integrally with a housing of the thread-forming unit. To move the air-jet spinning device from the operating position to the cleaning position, the housing can then be adjusted together with the thread-forming element relative to the nozzle unit. According to a preferred embodiment of the invention, the thread-forming unit has an element carrier designed to releasably receive the thread-forming element in the cleaning position of the air-jet spinning device.

[0027] According to this embodiment of the invention, the element carrier of the thread forming unit serves to easily, detachably, and thus replaceably accommodate the thread forming element, with interchangeability being ensured in the cleaning position of the air spinning device. The use of the element carrier is thus characterized by the possibility of easily replacing the thread forming element if necessary, which can significantly reduce downtimes at the spinning station and also allows contamination and blockages to be eliminated by replacing the thread forming element without any great expenditure of time. The element carrier also offers the possibility of operating the thread forming unit with different thread forming elements, whereby changing them can be carried out with only minimal effort.

[0028] The detachable arrangement of the thread-forming element on the advantageously provided element carrier can, in principle, be carried out in any desired manner, whereby it must be ensured that the thread-forming element can be fixedly secured to the thread-forming unit. According to a particularly preferred embodiment of the invention, the element carrier has receiving openings designed for bayonet-like locking of the thread-forming element and / or locking of the thread-forming element by means of fastening clips.

[0029] According to this embodiment of the invention, receiving openings are arranged on the element carrier, which can be brought into engagement with corresponding counter-elements on the replaceable thread-forming element and enable locking on the element carrier. If the receiving opening is designed for a bayonet-like arrangement of the thread-forming element, it has an undercut, which can be brought into engagement, for example, with a pin on the thread-forming element and enables positive locking of the thread-forming element. Alternatively or additionally, the receiving openings can also be designed to accommodate fastening clips, by means of which the thread-forming element can be arranged stationary on the element carrier.To fix the thread forming element, the element carrier can also have locking bodies which, in the operating position of the thread forming element on the element carrier, engage with corresponding locking marks on the thread forming element.

[0030] According to a particularly advantageous embodiment of the invention, it is further provided that the element carrier is designed for lateral removal of the thread-forming element, parallel to the drafting plane of the fiber sliver or obliquely to the thread-forming direction of the thread-forming element. According to this embodiment of the invention, the element carrier, for example, with its advantageously provided receiving openings, is designed such that the direction of movement of the thread-forming element during removal from or insertion into the element carrier is lateral, parallel to the drafting plane or obliquely to the thread-forming direction of the thread-forming element, in particular obliquely to a thread withdrawal guide direction of the thread-forming element.This embodiment of the invention ensures simple and convenient replacement of the thread-forming element when necessary, since the corresponding area of ​​the spinning station is easily accessible for operating personnel or suitable machines. Any necessary replacement processes can thus be carried out in a particularly simple and convenient manner.

[0031] Cleaning the air-jet spinning device in its cleaning position can generally be performed automatically or by the operating personnel using suitable tools. To prevent frequently recurring malfunctions, it is advantageous to remove existing contamination from the air-jet spinning device in such a way that it is completely removed from the spinning station and thus does not lead to renewed contamination, even at neighboring spinning stations. One possible approach is to use suitable extraction systems, either automated or operated and used by the operating personnel.

[0032] According to an advantageous embodiment of the invention, a suction device is arranged in an inlet region of the nozzle unit below the drafting plane of the fiber sliver, which suction device, according to a preferred embodiment of the invention, is arranged stationary on the air-jet spinning device. The suction device is arranged in an area below the nozzle unit in which the drawn fiber sliver is fed into the air-jet spinning device. A corresponding arrangement ensures effective removal of loose fiber material, which preferably accumulates in the area around the inlet region of the nozzle unit and leads to contamination or blockages that disrupt operation. An arrangement below the drafting plane ensures particularly reliable access of loose fiber material to the suction device.

[0033] The extraction can take place both during the normal spinning process and during the opening of the air-jet spinning device. Furthermore, by moving the air-jet spinning device to its cleaning position, it is possible to position the extraction device in such a way that the area of ​​the drafting system around the pair of output rollers, in particular the output bottom roller, is also freed of contaminants. Moving and / or pivoting the air-jet spinning device to the cleaning position thus also achieves cleaning of sections of the associated drafting system.

[0034] The invention further achieves the object by a method for cleaning an air spinning device of an air spinning device according to the invention or further developed as described above, in which the thread forming unit is moved linearly relative to the nozzle unit to adjust the air spinning device from the closed operating position into the open cleaning position and then the open air spinning device in the cleaning position with the thread forming unit and the nozzle unit is moved and / or pivoted linearly relative to the associated drafting device.

[0035] Adjusting the air-jet spinning device according to the method according to the invention ensures particularly reliable and comprehensive cleaning of the air-jet spinning device, so that trouble-free spinning operation can subsequently be resumed. The method according to the invention provides that after an initial opening of the air-jet spinning device, i.e., a displacement of the thread formation unit relative to the nozzle unit into the cleaning position, the air-jet spinning device arranged in the cleaning position is subsequently displaced and / or pivoted, in particular relative to the associated drafting system, thereby providing good accessibility for automated cleaning and / or for operating personnel for cleaning purposes.

[0036] According to a particularly advantageous development of the method according to the invention, it is provided that the air spinning device is linearly displaced and / or pivoted in the cleaning position relative to the associated drafting device in such a way that a suction device arranged in an inlet region of the nozzle unit below the drafting plane comes into operative connection with an output bottom roller of a pair of output rollers of the drafting device.

[0037] According to this embodiment of the invention, by displacing the open air-spinning device, an advantageously provided suction device on the air-spinning device is arranged opposite the output roller pair in such a way that deposits and contaminants, e.g. loose fiber material, located there are removed from the output bottom roller by the suction device. The preferably provided arrangement can be achieved in particular by the suction device being mounted and / or configured such that it can be moved closer to the output roller pair during the displacing of the air-spinning device, or by the distance between the output roller pair and the suction device being reduced during the displacing of the air-spinning device. This further development of the method according to the invention thus increases the cleaning effect in a complementary manner.

[0038] An embodiment of the invention is explained below with reference to the drawings. In the drawings: Fig. 1 is a schematic representation of an air-spinning device known from the prior art with a drafting system in front; Fig. 2 is a perspective representation of an air-spinning device according to an embodiment that can be displaced and / or pivoted between an operating position and a cleaning position and subsequently relative to a drafting system; Fig. 3 is a further perspective representation of the air-spinning device of Figure 2 ; Fig. 4 a side view of the air spinning device of Figure 2 in the operating position; Fig. 5 a side view of the air spinning device of Figure 2 in the cleaning position and Fig. 6 a perspective view of the air spinning device of Figure 2 with a thread forming element taken from an element carrier.

[0039] In Figure 1For a general understanding of the functioning of an air-jet spinning device 2, the basic structure of a drafting system 1 with a downstream air-jet spinning device 2 is shown. The fiber sliver 39 drawn off from a fiber sliver source (not shown here) is drawn in by an input roller pair formed by an input top roller 26 and an input bottom roller 27. The fiber sliver 39 is then drawn between the second drafting system top roller 28 and the second drafting system bottom roller 29 as well as the third drafting system top roller 30 and third drafting system bottom roller 31 and the subsequent output roller pair consisting of the output top roller 15 and output bottom roller 16. The drawn fiber sliver 39 then reaches the air-jet spinning device 2 via an inlet region 12 of a nozzle unit 6 and is formed into a thread therein using a thread forming unit 3 and the nozzle unit 6 of the air-jet spinning device 2.

[0040] For this purpose, the nozzle unit 6 has nozzles 40, 41, which are connected to a compressed air source 43 via lines 42. The air flowing out of the nozzles 40, 41 generates a rotational flow, which is applied to the supplied drawn fiber sliver 39. The thread-forming unit 3 has a thread-forming element designed as a spinning cone 5, which, in cooperation with the nozzle unit 6, forms a thread that is drawn out of the air-spinning device 2 via the hollow spinning cone 5 and an outlet opening 13.

[0041] In the Figures 2 and 31 shows an air-jet spinning device 2 according to one exemplary embodiment, which can be adjusted between an operating position and a cleaning position. The fiber sliver 39, which extends in the area between the upper rollers 15, 26, 28, 30 arranged on a pendulum support (not shown) and the lower rollers 16, 27, 29, 31 arranged on a drafting frame of the drafting system 1, is conveyed into the air-jet spinning device 2 after being drafted by the drafting system 1.

[0042] The air spinning device 2 comprises a nozzle unit 6 and a thread forming unit 5, which are arranged relative to each other between a Figure 2 , 3 and 4 operating position shown and one in Figure 5 and 6The yarn forming unit 3 comprises, in addition to the nozzles 40, 41 for generating a rotational flow acting on the drawn fiber sliver 39, a vortex chamber 4 within which, in the operating position, the yarn forming element designed as a spinning cone 5 is arranged. Within the air spinning device 2, the drawn fiber sliver 39 is Figure 1 shown operating principle into a thread which can be pulled off via the outlet opening 13.

[0043] To adjust the thread forming unit 3 with the spinning cone 5 relative to the nozzle unit 6, the air spinning device 2 according to this embodiment has a guide element 7 arranged on a base support 22 of the air spinning device 2. The guide element 7 has receiving openings for the displaceable mounting of guide rails 8 connected to the thread forming unit 3 and a guide element 9. A pneumatic drive unit 10 with a drive cylinder 11 is used to displace the thread forming unit 3 between the operating position and the cleaning position. Pressurization of the drive cylinder 11 causes a displacement of the thread forming unit 3 in the longitudinal axis direction of the guide rails 8 and the guide rod 9 relative to the base support 22 and the nozzle unit 6 arranged stationary on the base support 22 up to the Figures 5 and 6 cleaning position shown.

[0044] In the cleaning position, the air-jet spinning device 2 is pivotally connected to the drafting system 1 via the articulated arrangement of the base support 22 on a holder 23 arranged on the drafting system 1, wherein the articulated connection is established via suitable bearing pins 24. In the cleaning position, the opened air-jet spinning device 2 can be pivoted relative to the drafting system 1 such that a suction nozzle 17 of a suction device 18 arranged in the inlet area 12 of the nozzle unit 6 is arranged opposite the output bottom roller 16 such that contaminants can be suctioned off via the suction nozzle 17 both from the inlet area 12 of the nozzle unit 6 and from the area around the output bottom roller 16.

[0045] For easy replacement of the thread-forming element designed as a spinning cone 5, the air-jet spinning device 2 has an element carrier 19, which is designed to detachably receive an element frame 25 receiving the spinning cone 5. The element frame 25 has an opening for receiving the spinning cone 5, which is provided with edge-side receiving openings 33 that enable a bayonet-like reception of pins 34 arranged on the spinning cone 5, via which pins the spinning cone 5 can thus be fixedly arranged on the element frame 25. A projection 35 protruding from a rear side of the spinning cone 5 extends, in the assembled position, through an opening 36 on the element frame 25 and allows alignment of the spinning cone 5 in its circumferential direction.

[0046] The element frame 25 can in turn be arranged in a stationary manner on the element carrier 19. For this purpose, the element frame 25 has a web element 38 aligning it in the circumferential direction relative to the element carrier 1, as well as locking lugs 21 for locking. When the element frame 25 is mounted on the element carrier 19, the web element 38 extends through an opening 36 in the element carrier 19. Furthermore, the element frame 25 is locked in its position in the mounted position by elastic locking bodies 20, which engage with the locking marks 21 on the element frame 25. To remove the element frame 25 with the spinning cone 5, the locking bodies 20 are displaced against their elastic preload, so that the element frame 25 can be removed laterally from the element carrier 19.The spinning cone 5 can in turn be displaced via the bayonet-like connection with the element frame 25 by a partial rotation into a position in which it can be removed from the element frame 25. List of reference symbols 1 drafting system 23 bracket 2 Air spinning device 24 bearing bolt 3 Thread formation unit 25 Element frame 4 Vortex chamber 26 Input top roller 5 Thread forming element 27 Input bottom roller 6 nozzle unit 28 2. Drafting system top roller 7 Guide element 29 2. Drafting system bottom roller 8 guide rail 30 3. Drafting system top roller 9 guide rod 31 3. Drafting system bottom roller 10 drive unit 33 Receiving opening 11 drive cylinder 34 cones 12 Entrance area 35 projection 13 Exit opening 36 opening 15 Output top roller 37 recess 16 Output bottom roller 38 web element 17 Suction nozzle 39 Sliver 18 Suction device 40 nozzle 19 Element carrier 41 nozzle 20 locking body 42 lines 21 locking lugs 43 Compressed air source 22 Base carrier

Claims

1. Air-jet spinning device (2) for manufacturing an air-spun thread from a supplied sliver, comprising - a thread-forming unit (3), which has a thread-forming element (5) which is arranged in a vortex chamber (4) of a nozzle unit (6), and - the nozzle unit (6), which has at least one air nozzle oriented toward the vortex chamber (4) in such a way that an air flow emerging from the air nozzle applies a rotational flow to the sliver (39), which can be or is fed into the vortex chamber (4), wherein the thread-forming unit (3) being movable relative to the nozzle unit (6) between a closed operating position, in which the thread-forming unit (3) is in a position relative to the nozzle unit (6) in which the thread-forming element (5) is arranged within the vortex chamber (4) of the nozzle unit (6), and an open cleaning position of the air-jet spinning device (2), in which the thread-forming element (5) is guided out of the vortex chamber (4) and is disengaged from the nozzle unit (6) and the interior of the air-jet spinning device is accessible for cleaning, is mounted on a guide element (7) having a guide section such that it can be displaced linearly with respect to the nozzle unit (6), characterized in that the air-jet spinning device (2) is designed such that, following the opening movement of the thread-forming unit (3), it can be displaced linearly and / or pivoted in the opened cleaning position with the thread-forming unit (3) and the nozzle unit (6), in that a drafting system (1) for supplying the sliver (39) is assigned to the air-jet spinning device (2) and the air-jet spinning device (2) is mounted on the drafting system (1) such that it can be displaced and / or pivoted relative to the drafting system (1) in the open cleaning position.

2. Air-jet spinning device (2) according to claim 1, characterised by a drive unit for the automated displacement and / or pivoting of the air-jet spinning device (2) in the cleaning position.

3. Air-jet spinning device (2) according to claim 1 or 2, characterised in that the thread-forming unit (3) can be linearly displaced relative to the nozzle unit (6) in the longitudinal axis direction of the thread-forming element (5).

4. Air-jet spinning device (2) according to one or more of the preceding claims, characterised by an associated drive unit (10), in particular a pneumatically acting drive unit, for repositioning the air-jet spinning device (2) between the operating position and the cleaning position.

5. Air-jet spinning device (2) according to one or more of the preceding claims, characterised in that the thread-forming unit (3) has an element carrier (19), which is designed to releasably hold the thread-forming element (5) in the cleaning position of the air-jet spinning device (2).

6. Air-jet spinning device (2) according to claim 5, characterised in that the element carrier (19) has mounting openings which are designed for the bayonet-type locking of the thread-forming element (3) and / or the locking of the thread-forming element (3) by means of fastening clips.

7. Air-jet spinning device (2) according to one of the claims 5 or 6, characterised in that the element carrier (19) is designed for lateral removal of the thread-forming element (5) parallel to the drafting plane of the sliver (39).

8. Air-jet spinning device (2) according to one or more of the preceding claims, characterised by an extraction device (18) arranged below the drafting plane of the sliver (39) in an entry region (12) of the nozzle unit (6).

9. Method for cleaning an air-jet spinning device (2) according to one of the preceding claims 1 to 8, characterised in that - the thread-forming unit (3) is linearly displaced relative to the nozzle unit (6) in order to reposition the air-jet spinning device (2) from the closed operating position to the open cleaning position, and - the opened air-jet spinning device (2), in the cleaning position with the thread-forming unit (3) and the nozzle unit (6), is then linearly displaced and / or pivoted in particular relative to an associated drafting system (1).

10. Method according to claim 9, characterised in that the air-jet spinning device (2) is linearly displaced and / or pivoted, in the cleaning position, relative to the associated drafting system (1) in such a way that an extraction device (18) arranged below the drafting plane in an entry region (12) of the nozzle unit (6) enters an operative connection with an output bottom roller (15) of an output roller pair (15, 16) of the drafting system (1).