EP3048191A1 - Spinning nozzle of an air vortex spinning machine and method of opening same - Google Patents

Abstract

The invention relates to a spinneret (1) of an air-spinning machine, which is used to produce yarn (2) from a fiber structure (3) by means of an air flow, wherein the spinneret (1) comprises a spinneret (1) within a housing (4). arranged, vortex chamber (5) having an inlet opening (6) for a fiber structure (3), wherein the spinneret (1) at least partially in the vortex chamber (5) extending Garnbildungselement (7), wherein the spinneret (1) in the vortex chamber (5) opening air nozzles (8), via the air in the vortex chamber (5) can be introduced to the fiber strand (3) in the region of an inlet opening (9) of Garnbildungselements (7) to give a rotation, wherein the Garnbildungselement (7) has a discharge channel (10) adjoining the inlet opening (9), via which the yarn (2) can be pulled off the vortex chamber (5), and wherein the spinneret (1) is mounted such that it, in particular through Panning, between hen at least two positions is moved back and forth, that the housing (4) of the spinneret (1) at least two the vortex chamber (5) outwardly bounding housing portions (11). According to the invention, it is proposed that at least one of the housing sections (11) is mounted with the aid of a guide (12) such that it is displaceable relative to a further housing section (11), and wherein the housing (4) is displaced by means of the guide (12) mounted housing portion (11) is convertible from a closed position to an open position, in which at least the the inlet opening (9) having portion of Garnbildungselements (7) is accessible and cleanable for an operator.

Description

The present invention relates to a spinneret of an air spinning machine, which serves to produce yarn from a fiber structure by means of an air flow, wherein the spinneret has a, arranged within a housing of the spinneret, vortex chamber with an inlet opening for a fiber strand, wherein the spinneret at least one Partially in the vortex chamber extending Garnbildungselement, wherein the spinneret comprises in the vortex chamber opening air nozzles, can be introduced via the air in the vortex chamber to impart rotation to the fiber strand in the region of an inlet opening of Garnbildungselements, wherein the yarn formation element adjoining the inlet opening Having discharge duct, over which the yarn from the vortex chamber is removable, and wherein the spinneret is mounted such that it, in particular by pivoting, between two positions back and forth.

Generic spinnerets are used to produce a yarn from an elongated fiber structure by means of a vortex air flow generated by corresponding air nozzles within the vortex chamber. The outer fibers of the fiber composite are in this case wound in the region of the inlet opening of the generally spindle-shaped Garnbildelements around the inner fibers (core), so that in the result a yarn is formed, which finally withdrawn via the discharge channel from the vortex chamber and with the aid of a winding device to a Sleeve can be wound.

To be able to clean the interior of the spinneret, in particular the Garnbildungselement, manually or with the help of automatic handling devices after a stop of the yarn production, there are already proposals, the surrounding surrounding the swirl chamber of the spinneret in several parts train. The individual housing sections are in this case mounted to be movable relative to one another, so that the housing can be opened by moving one or more housing sections. After opening, the interior of the spinneret is accessible and can be freed of deposits (avivage, honeydew, etc.).

Since the known opening mechanisms (see eg EP 2 573 220 A2 ), however, have a relatively large amount of space, it is an object of the present invention to provide a spinneret which can be opened for the purpose of cleaning, without the need for an excessively large space requirement is required. Furthermore, a method for opening a spinneret is to be proposed, which can be carried out reliably even in tight space conditions.

This object is achieved by a spinneret and a method having the features of the independent claims.

According to the invention, the spinneret is characterized in that it comprises a housing with at least two housing sections delimiting the vortex chamber to the outside, wherein at least one of the housing sections is supported by means of a guide such that it is displaceable relative to a further housing section. If the housing section mounted with the aid of the guide is then displaced after pivoting of the spinneret relative to one or more further housing sections, the housing is moved from a closed position (which is to be assumed during yarn production) into an open position, in which at least the inlet opening exhibiting section of the Garnbildungselements is accessible and cleanable for an operator. The displacement of the mounted with the help of the guide housing portion relative to one or more housing sections in this case takes place along said guide, which is preferably designed like a rail.

It should be noted at this point that the housing can of course also comprise a plurality of slidingly mounted housing sections, which are mounted displaceably relative to one or more further housing sections. In the following, however, a solution is primarily described in which a displaceable housing portion is present, which is displaceable relative to a further housing portion, which is only to be understood as an example and the features described can be realized even with a spinneret with more than two housing sections.

In any case, the displacement of the movable housing section should take place along a guide, which comprises a guide track, in or on which a corresponding counterpart of the displaceable housing section is mounted in a form-fitting manner. In addition, one or more stops should be present, which limit the movement of the respectively displaceable housing section in the region of desired end points of the displacement.

Likewise, it brings advantages when the spinneret as a whole is pivotable α by an angle which has an amount of 30 ° to 90 °, preferably from 40 ° to 80 °. Such pivoting is particularly advantageous when a coil-side yarn end to be performed during a piecing against the actual spinning direction through the spinneret. The yarn end is blown in this case by an air flow through the outlet opening of the discharge channel in this and / or sucked. In the further course, the yarn end is moved out through the extraction channel, through the inlet opening of the yarn formation element and finally through the inlet opening of the vortex chamber. In this case, a non-negligible amount of air from the spinneret, which is necessary to realize the said movement of the yarn end occurs via the inlet opening of the vortex chamber in addition to the yarn end. Would this amount of air now hit the end of the fiber strand, which is usually after an interruption of yarn production in one of Spinneret upstream drafting, this would lead to a negative impact on the fiber structure. To avoid this, the spinneret according to the invention is finally pivotable by said amount. If air is now blown outward through the inlet opening of the spinneret after the pivoting in order to move the yarn end counter to the spinning direction through the spinneret, this air does not impinge on the fiber structure located in the drafting system. Rather, it passes the drafting laterally, so that an influence on the fiber composite properties can be excluded.

It has particular advantages when the spinneret comprises mechanical, pneumatic, hydraulic, magnetic and / or electromagnetically acting means with the aid of which the housing can be transferred from its closed position into its open position and / or vice versa. For example, one or more pneumatic cylinders could be used, by means of which the displaceable housing section is displaceable along the guide. It would also be conceivable that at least one spring is present, with the aid of which the displaceable housing section is pressed against a further housing section, so that the housing is held in its closed position by means of the spring until the displaceable housing with the aid of a pneumatic cylinder, an electromagnet or any other suitable means against the spring force of the spring is moved to transfer the housing in its open position.

Likewise, it brings advantages when the guide has one or more at least partially rectilinear and serving the leadership of one of the housing sections guide portions. The guide is, for example, a linear guide or a guide which is formed at least in sections as a linear guide. The rectilinear guide section may for example run parallel to a central axis of the discharge channel. Likewise, the guide or at least one guide section of the same part of the spinneret or part be a spinneret carrying the carrier of the air-spinning machine. Further, the guide may comprise a guide portion which engages around the guided portion of the displaceable housing portion in order to ensure a low-backlash guide.

It is advantageous if the withdrawal channel has a central axis, wherein the extension of the central axis extends outside the inlet opening of the vortex chamber, when the housing has its closed position. This ensures that the rotation of the fiber composite produced in the region of the yarn formation element does not propagate outwards counter to the spinning direction (this would result in a negative impairment or even an interruption of the yarn production). In other words, the lateral offset of the discharge duct and inlet opening acts during the yarn production as a twist stop. On the other hand, during the return of the yarn end in the course of a piecing operation, this offset would have the disadvantage that the yarn end in the area between the inlet opening of the yarn formation element and the inlet opening of the vortex chamber would have to be displaced laterally in order to be guided out of the vortex chamber through the inlet opening. Therefore, it is advantageous if the extension of the center axis of the exhaust duct extends into the inlet opening of the swirl chamber, when the housing has its open position, this being made possible by a correspondingly oriented guide. The yarn end can thus be particularly easily returned in the open position of the housing against the spinning direction through the spinneret, for this purpose only an air flow must be generated within the discharge channel, which is directed against the spinning direction and thus into the inlet opening of the vortex chamber. For this purpose, the spinneret preferably has one or more injection nozzles, which open obliquely and counter to the spinning direction in the discharge channel and are in communication with a compressed air supply.

In this context, it is particularly advantageous if the guide has one or more at least partially curved and extending serving the leadership of one of the housing sections guide portions. With the aid of such a guide, the displaceable housing portion can be tilted during its displacement relative to the further housing portion, so that the extension of the central axis of the discharge channel extends after the displacement of the bearing mounted by means of the guide housing portion in the inlet opening of the vortex chamber.

At this point it should be noted that it is generally advantageous within the scope of the invention if the housing section having the inlet opening of the swirl chamber is arranged in a first housing section and the yarn formation element is arranged in a second housing section, wherein one of the housing sections is displaceably mounted relative to the other is.

It also brings benefits when the housing has at least a first housing portion and a second housing portion, wherein the first housing portion along the guide is displaceable, and wherein the guide is rigidly connected to the second housing portion. A relative movement between the guide and the second housing portion is thereby safely avoided. In addition to a connection of the second housing portion and the guide, it is also possible that the guide is part of the second housing portion, so that a separate attachment of the guide can be omitted on the second housing portion.

Furthermore, it is advantageous if at least one housing section is mounted pivotably relative to a further housing section. In this case, the pivotable housing portion can be pivoted as part of the spinneret. In addition, it can be pivoted in addition to the said pivoting with respect to a further housing portion, so that two independent pivoting movements are possible. advantageously, it is in the case of two-fold pivotable housing portion to those housing portion which is also displaceable along the guide. In this case, the displaceable housing section, starting from the spinning position of the spinneret, can first be pivoted as part of the spinneret, subsequently displaced along the guide and finally pivoted relative to a further housing section. As a result, the displaceable housing section can therefore occupy three positions, wherein the last-mentioned position permits particularly good accessibility of the yarn-forming element.

It is also advantageous if the spinneret are pivotably mounted about a first pivot axis and the pivotable housing portion about a second pivot axis, wherein the first pivot axis is arranged spaced in a direction perpendicular to the first pivot axis direction of the second pivot axis. By selecting two spaced apart pivot axes, the position and the individual directions of movement of the housing section which can be pivoted twice can be adapted particularly easily to the given space conditions in the air-spinning machine. Preferably, the two pivot axes are parallel to each other.

It is particularly advantageous if the pivotable housing section is mounted on a carriage and can be pivoted relative thereto, the carriage in turn guided by means of the guide and being displaceable along the guide. The carriage preferably comprises a pivot axis to which the pivotable housing portion by means of a pivot pin or similar means is attached (alternatively, of course, the pivotable housing portion may include a pivot axis which is mounted on a pivot pin o. Ä. Of the carriage).

It is advantageous if the spinneret comprises means which, when the spinneret is pivoted, displace the guide along the guide Cause housing section. For this purpose, the displaceable housing section can be connected, for example, to a linkage or a cable, which is coupled to a further housing section or a carrier section of the spinneret such that the displaceable housing section and at least one further housing section automatically move apart if the spinneret is manually moved or by means of automatically actuated means (pneumatic cylinder, etc.) is pivoted.

The method according to the invention for opening a spinneret of an air-spinning machine is characterized in that the spinneret is moved, preferably pivoted, and that in the course of this movement or subsequently an opening of the housing takes place in that one of the housing sections is displaced relative to a further housing section, wherein the displacement takes place in such a way that after the displacement of the corresponding housing section, at least the section of the yarn formation element having the inlet opening is accessible and cleanable by an operator. At least one housing section is therefore initially pivoted as part of the spinneret during the opening process and then displaced along a guide (wherein the spinneret or its components can be designed according to the preceding or following description). In particular, it is advantageous if the displacement of the displaceably mounted housing section takes place along an at least partially curved guide track (reference being made to the above description with regard to the relevant advantages).

It is also advantageous if, during or after said shifting of the corresponding housing section, a pivoting of a housing section relative to a further housing section takes place in order to further improve the accessibility of said section of the yarn-forming element. Preferably, in this case, the housing section is pivoted, which has been previously moved. This housing section is thus pivoted during the opening of the spinneret about a first pivot axis, also shifted and additionally pivoted about a second pivot axis.

Figur 1

eine Seitenansicht eines Ausschnitts einer Luftspinnmaschine,

Figur 2

eine Schnittdarstellung einer Spinndüse in Nachbarschaft eines Streckwerkswalzenpaares,

Figur 3

eine erfindungsgemäße Spinndüse in Spinnstellung,

Figur 4

die in Figur 3 gezeigte Spinndüse in verschwenkter Stellung,

Figur 5

die in Figur 4 gezeigte Spinndüse mit geöffnetem Gehäuse,

Figur 6

eine weitere erfindungsgemäße Spinndüse mit einem Gehäuse in Offenstellung,

Figur 7

jeweils eine Schnittdarstellung eines Gehäuses in Schließstellung (links) und in Offenstellung (rechts),

Figur 8

eine weitere erfindungsgemäße Spinndüse mit einem Gehäuse in Spinnstellung, und

Figur 9

die in Figur 8 gezeigte Spinndüse mit verschwenktem und geöffnetem Gehäuse.

Further advantages of the invention are described in the following exemplary embodiments. It show, each schematically:

FIG. 1

a side view of a section of an air-spinning machine,

FIG. 2

a sectional view of a spinneret in the vicinity of a drafting roller pair,

FIG. 3

a spinneret according to the invention in the spinning position,

FIG. 4

in the FIG. 3 shown spinneret in a pivoted position,

FIG. 5

in the FIG. 4 shown spinneret with opened housing,

FIG. 6

a further spinneret according to the invention with a housing in the open position,

FIG. 7

each a sectional view of a housing in the closed position (left) and in the open position (right),

FIG. 8

another spinneret according to the invention with a housing in the spinning position, and

FIG. 9

in the FIG. 8 shown spinneret with pivoted and opened housing.

FIG. 1 shows a section of a spinning station of an air-jet spinning machine according to the invention (wherein the air-spinning machine of course a plurality of, preferably adjacent to each other, spinning stations can have). If necessary, the spinning station can comprise a drafting unit 20 with a plurality of drafting rollers 19 (which can be partially looped around with a belt 21), which is supplied with a fiber structure 3, for example in the form of a relined conveyor belt. Furthermore, the spinning station shown comprises a in FIG. 2 spinneret 1 shown in detail with an internal vortex chamber 5, in which the fiber structure 3 or at least a portion of the fibers of the fiber composite 3 is provided after passing through an inlet opening 6 of the vortex chamber 5 with a rotation.

In addition, the spinning station may comprise a pair of delivery rollers downstream of the spinneret 1 and two take-off rollers 23 and a winding device connected downstream of the take-off roller pair for winding the yarn 2 leaving the spinning station onto a sleeve 24. The spinning station according to the invention need not necessarily have a drafting system 20. Also, the pair of take-off rollers is not absolutely necessary.

The spinning station shown generally works by an air spinning process. To form the yarn 2, the fiber structure 3 is guided into the swirl chamber 5 of the spinneret 1 via a fiber guide element 25 having the inlet opening 6. There it receives a rotation, d. H. at least a portion of the free fiber ends of the fiber composite 3 is detected by a vortex air flow, which is generated by correspondingly arranged in a surrounding the vortex chamber 5 housing 8 air nozzles (the air nozzles 8 can communicate via an air channel 26, in turn, with a compressed air line 27 is connected, which is supplied via a compressed air supply with compressed air).

A part of the fibers is in this case pulled out of the fiber structure 3 at least a little bit and wound around the front region of a projecting into the swirl chamber 5 Garnbildungselements 7. Characterized in that the fiber structure 3 through an inlet opening 9 of the Garnbildelements 7 via a arranged within the yarn formation element 7 exhaust duct Finally, the free fiber ends are drawn in the direction of the inlet opening 9 from the vortex chamber 5 and finally via an outlet opening 22 and loop as so-called Umwindefasern to the centrally extending core fibers resulting in a desired rotation having yarn. 2 The compressed air introduced via the air nozzles 8 finally leaves the spinneret 1 via the outlet channel 10 as well as any air outlet 29 which may be connected to a vacuum source if required.

In general, it should be made clear at this point that the yarn 2 produced can basically be any fiber structure 3, which is characterized in that an external part of the fibers (so-called capillary fibers) around an inner, preferably untwisted or if necessary also rotated Part of the fibers, is wrapped around to give the yarn 2, the desired strength. Also included in the invention is an air-spinning machine with the aid of which so-called roving can be produced. Roving is a yarn 2 with a relatively small proportion of wraparound fibers, or a yarn 2 in which the wraparound fibers are wound relatively loosely around the inner core, so that the yarn 2 remains deformable. This is crucial if the produced yarn 2 on a subsequent textile machine (for example, a ring spinning machine) is to be distorted again with the help of a drafting system 20 or must, in order to be further processed accordingly.

With regard to the air nozzles 8, it should also be mentioned as a precautionary measure at this point that they should generally be oriented so that the exiting air jets are rectified in order to jointly produce a rectified air flow with a sense of rotation. Preferably, the individual air nozzles 8 are arranged in this case rotationally symmetrical to one another and open tangentially into the swirl chamber 5.

Furthermore, the FIG. 2 can be seen that the Garnbildungselement 7 next to the trigger channel 10 may have a further bore in the form of an injection nozzle 28 (although shows FIG. 2 a spinneret 1 with one-piece housing 4; However, the features shown herein may also be realized in the spinnerette 1 according to the invention described below). Through the injection nozzle 28 can during a piecing phase air against the spinning direction (ie based on FIG. 2 in the direction of the fiber guide element 25) are introduced to guide a sleeve-side yarn end through the discharge channel 10 in the direction of the fiber guide element 25 and therethrough to the outside of the spinneret 1. There it is finally overlapped with the still located in the drafting 20 fiber strand 3 and then introduced together with this (after deactivation of the injection nozzle 28) in the spinning direction in the spinneret 1 to go back to the normal spinning operation, in which fed from the spinneret 1 Fiber structure 3 a yarn 2 is generated.

The basic idea of the present invention can now be the synopsis of FIGS. 3 to 5 which show a schematic diagram of a spinneret 1 of an air-spinning machine (the drawing unit 20, not shown, would be located above the in FIG. 3 are located spinneret 1; the orientation of the spinneret 1 in FIG. 3 essentially corresponds to the spinneret 1 shown in FIG. 2, ie inlet opening 6 at the top, outlet opening 22 at the bottom).

First, a comparison of the Figures 3 and 4 in that the spinneret 1 according to the invention is mounted on a carrier 30 of the air-spinning machine via a first pivot axis 16 and can be pivoted about it. This pivoting is particularly advantageous in the piecing process described, since the introduced via the injection nozzle 28 and the spinneret 1 via the inlet opening 6 leaving air in this case does not meet the located in the drafting 20 fiber strand 3 (this would have a negative effect on its properties cause).

In addition to the pivoting of the spinneret 1 and the individual separable housing sections 11 of the housing 4 of the spinneret 1 is provided that at least one of a plurality of housing sections 11 of the spinneret 1 relative to a further housing section 11 along a guide 12 is slidable to the housing 4 of a closed position ( FIG. 4 ) into an open position ( FIG. 5 ) and vice versa. The guide 12 may in this case be connected to one of the housing sections 11 or be part of one of the housing sections 11 or be present as a separate section from the spinneret 1. In any case, the storage of the corresponding housing portion 11 allows this in the in FIG. 5 shown position can be moved, in which the Garnbildungselement 7 or at least whose the inlet opening 9 having portion accessible from the outside and thus cleanable.

While FIG. 5 shows a linear guide with a straight guide section 13, it may also be advantageous if the guide 12 has a curved extending guide portion 15, as this example in FIG. 6 is shown. In addition to the displacement causes such a configured guide 12 and a slight tilting of the guided housing portion 11 (which can in principle be connected via a correspondingly guided portion 31 with the guide 12 in conjunction). The advantage of such a movement shows the comparison of the two in FIG. 7 shown sectional views of a spinneret. 1

While the left illustration in FIG. 7 shows the housing 4 in its closed position, in which the central axis 14 of the discharge channel 10 outside the inlet opening 6 is located (the fiber guide element 25 serves as described above in this case twist stop), the said central axis 14 extends in the open position of the housing 4 (right illustration in FIG. 7 In this way, finally, a return of a yarn end of the discharge channel 10 through the inlet opening 6 during the described piecing process is facilitated without the yarn end from the outside through the Inlet opening 6 would have to be sucked.

Finally, the show FIGS. 8 and 9 a particularly preferred embodiment of the present invention. As can be seen from these figures, the displaceable housing section 11 can be mounted on a slide 18 on or in the guide 12. The carriage 18 can in turn be connected via a second axis of rotation with the displaceable housing section 11, so that the displaceable housing section 11 can pivot not only as part of the spinneret 1 about the first pivot axis 16, but also about the second pivot axis 17. Like a comparison of Figures 5 (Storage without carriage 18) and 9 (storage on carriage 18) shows the housing 4 can be further opened thereby, so that the accessibility for an operator can be significantly improved. The angle β shown in FIG. 9 (angle by which a first housing section 11 can be pivoted about a second pivoting axis 17 relative to a further housing section 11) can be in the range that in the above description for the angle α (angle, in FIG the spinneret 1 as a whole can be pivoted about the first pivot axis 16) was specified.

Finally, it should be clarified that the pivoting of the spinneret 1 or the displacement and / or pivoting of individual housing sections 11 can be done manually or by means of appropriate means. For example, in FIG. 6 a spring element 32 is shown, which presses the displaceable housing section 11 in the direction of the further housing section 11, as soon as no, for example generated by means of a pneumatic cylinder, opposite force acts on the displaceable housing section 11.

The present invention is not limited to the illustrated and described embodiments. Variations within the scope of the claims are possible as well as any combination of the described Features, even if they are shown and described in different parts of the description or the claims or in different embodiments.

LIST OF REFERENCE NUMBERS

1

spinneret

2

yarn

3

fiber structure

4

casing

5

swirl chamber

6

Inlet opening of the vortex chamber

7

Garnbildungselement

8th

air nozzle

9

Inlet opening of Garnbildungselements

10

Discharge channel of Garnbildungselements

11

housing section

12

guide

13

rectilinear guide section of the guide

14

Center axis of the exhaust duct

15

curved guide portion of the guide

16

first pivot axis

17

second pivot axis

18

carriage

19

Drafting system roller

20

drafting system

21

Strappy

22

Outlet opening of the spinneret

23

off roll

24

shell

25

Fiber guide element

26

air duct

27

Compressed air line

28

injection nozzle

29

air outlet

30

carrier

31

guided section

32

spring element

α

Angle around which the spinneret can be pivoted

β

Angle by which a housing section can be pivoted relative to a further housing section

Claims (13)

Spinneret (1) of an air-jet spinning machine, which serves to produce yarn (2) from a fiber structure (3) by means of an air flow, - Wherein the spinneret (1), within a housing (4) of the spinneret (1) arranged vortex chamber (5) having an inlet opening (6) for a fiber strand (3), - wherein the spinneret (1) has an at least partially in the vortex chamber (5) extending Garnbildungselement (7), - wherein the spinneret (1) in the vortex chamber (5) opening air nozzles (8), via the air in the vortex chamber (5) can be introduced to the fiber strand (3) in the region of an inlet opening (9) of Garnbildungselements (7) to give a turn, - wherein the Garnbildungselement (7) has a to the inlet opening (9) subsequent withdrawal channel (10) through which the yarn (2) from the swirl chamber (5) is removable, and - wherein the spinneret (1) is mounted such that it, in particular by pivoting, between at least two positions back and forth, characterized, - That the housing (4) of the spinneret (1) at least two the vortex chamber (5) outwardly bounding housing sections (11), - Wherein at least one of the housing portions (11) is supported by means of a guide (12), that it is displaceable relative to a further housing portion (11), and - Wherein the housing (4) by moving the guide (12) mounted housing portion (11) is convertible from a closed position to an open position, in which at least the inlet opening (9) having portion of Garnbildungselements (7) for an operator accessible and cleanable. Spinneret (1) according to the preceding claim, characterized in that the spinneret (1) is pivotable by an angle α having an amount of 30 ° to 90 °, preferably from 40 ° to 80 °. Spinneret (1) according to one of the preceding claims, characterized in that the spinneret (1) comprises mechanically, pneumatically, hydraulically, magnetically and / or electromagnetically acting means with the aid of which the housing (4) from its closed position to its open position and / or conversely is transferable. Spinneret (1) according to one of the preceding claims, characterized in that the guide (12) has one or more at least partially rectilinearly extending and guiding one of the housing sections (11) serving guide portions (13). Spinneret (1) according to one of the preceding claims, characterized in that the discharge channel (10) has a central axis (14), wherein the extension of the central axis (14) outside the inlet opening (6) of the vortex chamber (5), when the housing (4) has its closed position, and wherein the extension of the central axis (14) in the inlet opening (6) of the swirl chamber (5) extends when the housing (4) has its open position. Spinneret (1) according to one of the preceding claims, characterized in that the guide (12) has one or more curved sections extending at least partially and the guiding one of the housing sections (11) serving guide portions (15). Spinneret (1) according to one of the preceding claims, characterized in that the housing (4) has at least one first housing portion (11) and a second housing portion (11), wherein the first housing portion (11) along the guide (12) is displaceable and wherein the guide (12) is rigidly connected to or part of the second housing portion (11). Spinneret (1) according to one of the preceding claims, characterized in that at least one housing portion (11), preferably along the guide (12) displaceable housing portion (11) is mounted pivotably relative to a further housing portion (11). Spinneret (1) according to the preceding claim, characterized in that the spinneret (1) about a first pivot axis (16) and the pivotable housing portion (11) about a second pivot axis (17) are pivotally mounted, wherein the first pivot axis (16) in a direction perpendicular to the first pivot axis (16) extending direction spaced from the second pivot axis (17) is arranged. Spinneret (1) according to claim 8 or 9, characterized in that the pivotable housing portion (11) mounted on a carriage (18) and is pivotable with respect to this, wherein the carriage (18) again guided by means of the guide (12) and along the guide (12) is displaceable. Spinneret (1) according to one of the preceding claims, characterized in that the spinneret (1) comprises means which cause the housing section (11) to be displaced along the guide (12) during pivoting of the spinneret (1). Method for opening a spinneret (1) of an air-jet spinning machine, which serves to produce yarn (2) from a fiber structure (3) by means of an air flow, in particular a spinneret (1) according to one of the preceding claims, wherein the spinneret (1) engages Housing (4) with at least two, an internal swirl chamber (5) outwardly bounding housing sections (11), and wherein the spinneret (1) at least partially in the swirl chamber (5) extending Garnbildungselement (7) having an inlet opening (9) for the yarn (2) produced from the fiber structure (3),
characterized,
in that the spinneret (1) is moved, preferably pivoted, and that in the course of this movement or subsequently an opening of the housing (4) takes place in that one of the housing sections (11) is displaced relative to a further housing section (11) the displacement takes place in such a way that after the displacement of the corresponding housing section (11) at least the portion of the yarn formation element (7) having the inlet opening (9) is accessible and cleanable by an operator. Method according to the preceding claim, characterized in that during or after said shifting of the corresponding housing section (11), a pivoting of a housing section (11) relative to a further housing section (11) takes place in order to further increase the accessibility of said section of the yarn forming element (7) to improve.

Images