阅读说明：本技术 用于喷丝头的纤维导引元件以及配备有所述纤维导引元件的喷丝头 (Fiber guide element for a spinneret and spinneret equipped with said fiber guide element ) 是由 M·库布勒 G·沙夫勒 托马斯·兰德辛格 亚历山大·福斯 吉妮·莫克勒 大卫·汉斯 于 2020-01-03 设计创作，主要内容包括：本发明涉及一种用于气流式纺纱机的喷丝头(2)的纤维导引元件(1),其中所述纤维导引元件(1)在沿着预先给定的运送方向(T)导引进入到所述喷丝头(2)中的纤维须条(3)的预期用途中起作用,其中所述纤维导引元件(1)具有用于导引所述纤维须条(3)的纤维导引面,并且其中所述纤维导引面包括入口区域(4)、沿着所述运送方向(T)布置在所述入口区域(4)后面的中间区域(5)以及沿着所述运送方向(T)布置在所述中间区域(5)后面的出口区域(6)。所述入口区域(4)和所述出口区域(6)分别构造为关于所述纤维导引元件(1)的纵轴线(L)未扭转的结构,而所述中间区域(5)则至少部分地围绕着所述纵轴线(L)扭转。此外,本发明涉及一种用于前面提到的气流式纺纱机的喷丝头(2),其中所述纤维导引元件(1)如此构成,使得所述旋转方向-所述中间区域(5)沿着所述旋转方向至少部分地围绕着所述纵轴线(L)扭转-优选沿着所述运送方向(T)看对应于涡旋气流的旋转方向。(The invention relates to a fiber guiding element (1) for a spinneret (2) of an air-jet spinning machine, wherein the fiber guiding element (1) is active in guiding a fiber strand (3) entering the spinneret (2) in a predetermined transport direction (T), wherein the fiber guiding element (1) has a fiber guiding surface for guiding the fiber strand (3), and wherein the fiber guiding surface comprises an inlet region (4), an intermediate region (5) arranged downstream of the inlet region (4) in the transport direction (T), and an outlet region (6) arranged downstream of the intermediate region (5) in the transport direction (T), wherein the inlet region (4) and the outlet region (6) are each configured in a non-twisted configuration with respect to a longitudinal axis (L) of the fiber guiding element (1), and wherein the intermediate region (5) is at least partially twisted around the longitudinal axis (L), and wherein the fiber guiding element (1) is configured such that the transport direction (T-L) is at least partially twisted with respect to the longitudinal axis (T).)

1. A fiber guiding element (1) for a spinneret (2) of a pneumatic spinning machine, wherein the fiber guiding element (1) is active in guiding a fiber strand (3) entering the spinneret (2) along a predefined transport direction (T) for an intended use,

-wherein the fibre-guiding element (1) has a fibre-guiding surface for guiding the fibre assembly (3), and

-wherein the fibre guiding surface comprises an inlet area (4), an intermediate area (5) arranged after the inlet area (4) in the transport direction (T) and an outlet area (6) arranged after the intermediate area (5) in the transport direction (T),

it is characterized in that the preparation method is characterized in that,

the inlet region (4) and the outlet region (6) are each configured in an untwisted manner with respect to a longitudinal axis (L) of the fiber guiding element (1), while the intermediate region (5) is twisted at least partially about the longitudinal axis (L).

2. Fiber guiding element (1) according to the preceding claim, characterized in that the inlet region (4) is twisted with respect to the outlet region (6) about the longitudinal axis (L) by an angle γ of a magnitude between 1 ° and 120 °, preferably between 70 ° and 90 °.

3. Fiber guiding element (1) according to one of the preceding claims, characterized in that the inlet region (4), the intermediate region (5) and/or the outlet region (6) are at least partially formed by a flat, concave, preferably trough-like or convexly arched surface, wherein the inlet region (4) in the second case preferably and at least partially has a bending radius R, the magnitude of which is 1mm or more.

4. Fiber guiding element (1) according to any of the preceding claims, characterized in that the intermediate region (5) and the outlet region (6) are separated from each other by a dividing line (7), wherein the minimum spacing A between the dividing line (7) and the longitudinal axis (L) of the fiber guiding element (1) has a magnitude between 0.5mm and 1.5 mm.

5. Fiber guiding element (1) according to any of the preceding claims, characterized in that the outlet region (6) has a first outlet section (8) adjoining the intermediate region (5) along the transport direction (T) and a second outlet section (9) adjoining the first outlet section (8) along the transport direction (T), wherein the first outlet section (8) and the second outlet section (9) enclose an angle β, the magnitude of this angle β being between 180 ° and 160 °.

6. Fiber guiding element (1) according to any of the preceding claims, characterized in that the first outlet section (8) and/or the second outlet section (9) enclose an angle σ with a longitudinal axis (L) of the fiber guiding element (1), the magnitude of which angle σ is between 5 ° and 25 °, preferably between 10 ° and 20 °.

7. Fiber guiding element (1) according to any of the preceding claims, characterized in that the outlet area (6) or the first outlet section (8) and/or the second outlet section (9) is at least partially constituted by a flat surface.

8. The fiber guiding element (1) according to any one of the preceding claims, wherein the second outlet section (9) is formed by a lateral flattening (10) of an otherwise truncated cone-shaped end section (11) of the fiber guiding element (1), wherein the otherwise truncated cone-shaped end section (11) preferably has a cover surface (18) which is defined by a limiting line and a reference circle of the flattening (10), wherein the reference circle has a diameter D1, the magnitude of the diameter D1 being between 1mm and 3mm, and/or wherein the otherwise truncated cone-shaped end section (11) has a height H, the magnitude of the height H being between 0.5mm and 1.5 mm.

9. Fiber guiding element (1) according to any of the preceding claims, characterized in that the otherwise truncated cone-shaped end section (11) has an outer side which intersects the cover face (18) of the fiber guiding element (1) at an angle α, the magnitude of the angle α being between 10 ° and 50 °, preferably between 20 ° and 40 °.

10. Fibre guiding element (1) according to any one of the preceding claims, characterised in that the fibre guiding element (1) has at least partially an outer surface (12) on a cylinder, wherein the axis of symmetry of the cylinder runs parallel to or coincident with the longitudinal axis (L) of the fibre guiding element (1), wherein the cylinder preferably has an outer diameter D2, the outer diameter D2 being of a magnitude between 3mm and 6mm, preferably between 4mm and 5 mm.

11. Fibre guiding element (1) according to any of the preceding claims, characterised in that the fibre guiding element (1) has a longitudinal extent I extending in the direction of the longitudinal axis (L), the magnitude of which is between 8 and 16mm, preferably between 10 and 14 mm.

12. Fibre guide element (1) according to one of the preceding claims, characterised in that the inlet region (4) has a longitudinal extent il extending in the direction of the longitudinal axis (L), the magnitude of the longitudinal extent il being between 2 and 7mm, preferably between 3 and 6 mm.

13. Fibre guide element (1) according to one of the preceding claims, characterised in that the intermediate region (5) has a longitudinal extent III extending in the direction of the longitudinal axis (L), the magnitude of the longitudinal extent III being between 2 and 9mm, preferably between 4 and 7 mm.

14. Fibre guiding element (1) according to any one of the preceding claims, characterised in that the outlet area (6) has a longitudinal extent IV extending in the direction of the longitudinal axis (L) with a magnitude between 1 and 4mm, preferably between 2 and 3 mm.

15. Spinneret (2) for an air-jet spinning machine, having a fiber guiding element (1) for guiding fiber strands (3) entering the spinneret (2) in a transport direction (T) and having air nozzles (14) for generating a swirling air flow inside the spinneret (2), characterized in that the fiber guiding element (1) is constructed according to any one of the preceding claims, wherein the direction of rotation-the intermediate region (5) is twisted at least partially around the longitudinal axis (L) in the direction of rotation-preferably corresponds to the direction of rotation of the swirling air flow as seen in the transport direction (T).

Technical Field

The invention relates to the field of textile machinery, in particular to a fiber guide element for a spinneret of an air flow type spinning machine and the spinneret for the air flow type spinning machine.

Background

Please refer to EP 2009151B 1 or JP 2773670B 2.

Disclosure of Invention

The invention relates to a fiber guiding element for a spinneret of an air-jet spinning machine, wherein the fiber guiding element is active in the intended use of guiding a fiber strand entering the spinneret in a predefined transport direction, wherein the fiber guiding element has a fiber guiding surface for guiding the fiber strand, and wherein the fiber guiding surface comprises an inlet area, an intermediate area arranged downstream of the inlet area in the mentioned transport direction, and an outlet area arranged downstream of the intermediate area in the mentioned transport direction.

Furthermore, a spinneret for an air-jet spinning machine is proposed, which has a fiber guiding element for guiding a fiber strand entering the spinneret.

The corresponding spinneret is used to produce a thread from an elongate fibre strand by means of a swirling air flow generated by air nozzles in the interior of a cyclone chamber of the spinneret. The fiber strands are provided by a drawing device, which homogenizes the fiber strands before they enter the spinneret. The inlet of the spinneret is formed or delimited by a fiber guiding element for guiding the fibers of the fiber strand entering the spinneret.

The fibers outside the fiber bundle are wound around the fibers lying inside (core fibers) in the cyclone chamber in the region of the inlet of the generally spindle-shaped yarn forming element after entering the spinneret, so that as a result a yarn is produced which can finally be drawn off from the cyclone chamber and thus from the spinneret through the drawing channel of the yarn forming element and can be wound onto a bobbin by means of a winding device.

In order to prevent the rotation of the fiber assembly from spreading outside the spinneret opposite to the direction of transport of the fiber assembly and in this case, in particular, in the region of the drawing device, various fiber guiding elements are known. The purpose of these fiber guiding elements is generally to deflect or divert the fiber strand transversely to the direction of transport, wherein this deflection or diversion acts as a twist stop (Drallstopp) and prevents the twist of the fiber strand from propagating from the cyclone chamber to the outside of the spinneret. In this respect, reference is made purely exemplarily to EP 2009151B 1 or JP 2773670B 2.

The object of the invention is to provide a fiber guiding element which is characterized in that a particularly good twist stop is obtained while the fiber strand is guided with great care.

The object is achieved by a fiber guiding element or a spinneret equipped with the fiber guiding element having the features of the independent claims.

In principle, the fiber guide element according to the invention also has a fiber guide surface for guiding the fiber strand. The fiber guide surface is composed of an inlet region, an intermediate region arranged downstream of the inlet region in the mentioned transport direction, and an outlet region arranged downstream of the intermediate region in the mentioned transport direction.

In the intended use of the fiber guide element (i.e. after installation in the spinneret of the air spinning machine), the fiber strand passes through the mentioned regions in succession in the transport direction. The regions thus together form the mentioned fibre guiding surface of the fibre guiding element.

According to the invention, it is now provided that the geometry of the intermediate region differs from the geometry of the inlet region and from the geometry of the outlet region in such a way that only the intermediate region is twisted (at least partially) around the longitudinal axis of the fiber guiding element. In contrast, both the inlet region and the outlet region are each configured in a non-twisted configuration with respect to the longitudinal axis of the fiber guiding element.

That is to say while the fiber strand is guided in the intermediate region along the twisted surface and thus on a helical path, the path along which the fiber strand is guided in the inlet region and in the outlet region is respectively in one plane or in a convex or concave, preferably groove-shaped surface (depending on how the inlet region or the outlet region is geometrically formed).

It is particularly advantageous if the inlet region, the intermediate region and/or the outlet region are formed at least in part by a flat, concave, preferably trough-like or convexly curved surface. If the inlet region is present as a convexly or concavely arched surface, it is advantageous if the respective surface section at least partially has a bending radius R, the magnitude of which is 1mm or more. The fibers of the fiber assembly are deflected thereby transversely to the transport direction, whereby a twist-stop effect is exerted on the fiber assembly.

It is also advantageous if the inlet region is twisted relative to the outlet region about the longitudinal axis by an angle γ of between 1 ° and 120 °, preferably between 70 ° and 90 °. The angle is an angle enclosed by a boundary between the inlet area and the outlet area and a boundary between the intermediate area and the outlet area. The slope of the intermediate region is preferably constant as seen in the transport direction.

Furthermore, it is advantageous if the intermediate region and the outlet region are separated from one another by a dividing line, wherein the minimum spacing a between the dividing line and the longitudinal axis of the fiber guiding element has a magnitude of between 0.5mm and 1.5 mm. The distance between the outlet region immediately after the intermediate region and the longitudinal axis should be smaller than distance a. In the region of the mentioned dividing line, projections are thereby produced, by means of which the fiber strand is guided into the cyclone chamber. In particular, the projection prevents a twist of the yarn inside the spinneret from possibly propagating against the transport direction to the outside of the spinneret.

Furthermore, it is of advantage if the outlet region has a first outlet section adjoining the intermediate region in the mentioned transport direction and a second outlet section adjoining the first outlet section in the mentioned transport direction. Preferably, the two outlet sections are designed as flat structures. It is likewise conceivable for the first outlet section and/or the second outlet section to be designed as a concave or convex surface.

It is furthermore advantageous if the first outlet section encloses an angle β with the second outlet section, the angle β being of a magnitude between 180 ° and 160 °, in the first-mentioned case the two outlet sections lie in a common plane or are tangent to at least one common plane, and in the second case the first outlet section is inclined relative to the second outlet section.

This is particularly advantageous if the first outlet section and/or the second outlet section enclose an angle with the longitudinal axis of the fiber guiding element, the angle having a magnitude of between 5 ° and 25 °, preferably between 10 ° and 20 °. Advantageously, the first outlet section and the second outlet section enclose the same angle with the longitudinal axis. However, it is likewise conceivable for the respective angles to be different, so that the above-mentioned elevations result. In this case, the angle between the longitudinal axis and the first outlet section may also be greater than 25 °. Especially the magnitude may be below 70 deg..

Furthermore, it is advantageous if the outlet region or the first outlet section and/or the second outlet section is formed at least partially by a flat surface. The fibers of the fiber strand are guided in this case relatively straight. In contrast, it is advantageous if the central region has absolutely no flat sections.

It is also advantageous if the second outlet section is formed by a lateral flattening of the otherwise truncated-cone-shaped end section of the fiber guiding element. The flattened portion is preferably a flat surface. The end section of the fiber guiding element is thus partially designed in the form of a truncated cone, the remaining area of the end section being formed by the flattening. In particular, the plane of the flattened section intersects the longitudinal axis of the fiber guiding element on the outside thereof.

The partially truncated-cone-shaped end section preferably has a cover surface, which is defined by a limiting line and a reference circle of the flattening. In particular, the cover surface should extend perpendicular to the longitudinal axis of the fiber guiding element. Furthermore, it is advantageous if the reference circle has a diameter, the magnitude of which is between 1mm and 3 mm. Furthermore, the partially truncated cone-shaped end section should have a height, the magnitude of which is between 0.5mm and 1.5 mm.

It is furthermore advantageous if the partially truncated-cone-shaped end section has an outer side which intersects the covering surface of the fiber guiding element at an angle α, the magnitude of the angle α being between 10 ° and 50 °, preferably between 20 ° and 40 °, an angle of substantially 30 ° preferably being present, since the end section, after the installation of the fiber guiding element in the spinneret, is arranged in the region of an air nozzle through which the compressed air necessary for producing the yarn is blown, the angle mentioned having an influence on the rotation of the fibers of the fiber strand.

Advantageously, the fiber guiding element has at least in part on the outer surface of an imaginary cylinder. The outer surfaces mentioned are in particular the respective backs of the inlet, intermediate and outlet regions. The imaginary cylinder has an axis of symmetry which preferably runs parallel to or coincides with the longitudinal axis of the fiber guiding element. Furthermore, the axis of symmetry should extend through the cover surface of the above-mentioned end section. Finally, the imaginary cylinder has an outer diameter of a magnitude between 3mm and 6mm, preferably between 4mm and 5 mm.

It is also advantageous if the fiber guiding element has a longitudinal extent extending in the direction of the longitudinal axis, the magnitude of the longitudinal extent being between 8mm and 16mm, preferably between 10mm and 14 mm. While a short overall length of the fiber guiding element is preferred for reasons of spatial position in the inlet region of the spinneret, a certain length is required for achieving the desired guidance of the fiber strand and the twist stop associated therewith.

It is also advantageous if the inlet region has a longitudinal extent in the direction of the longitudinal axis, the magnitude of which is between 2mm and 7mm, preferably between 3mm and 6 mm. The mentioned length should not be less than 2mm, since the inlet region should cause a gradual lateral deflection of the fiber strand, which can only be very abrupt for smaller lengths.

The same is also advantageous if the intermediate region has a longitudinal extent in the direction of the longitudinal axis, which is between 2mm and 9mm, preferably between 4mm and 7 mm. A quantity within the mentioned range is sufficient for enabling the above-mentioned angle between the inlet area and the outlet area without the fibers of the fiber strand being turned too helically.

Furthermore, it is of advantage if the outlet region has a longitudinal extent extending in the direction of the longitudinal axis, the magnitude of which is between 1mm and 4mm, preferably between 2mm and 3 mm. Preferably, the outlet region is inclined in the direction of the longitudinal axis, when viewed in the transport direction, so that the lateral deflection of the fiber assembly in the outlet region is reduced in the transport direction. This reduction of the deflection should also take place gradually, wherein the mentioned degree of longitudinal extension has proven to be reliable.

Furthermore, a spinneret for an air-flow spinning machine is proposed, wherein the spinneret comprises fiber guiding elements as is customary in the prior art. The fiber guide element is arranged in the region of the inlet of the spinneret and guides the fiber strand entering the spinneret.

In order to prevent the twists imparted to the fiber assembly inside the cyclone chamber of the spinneret from propagating to the outside of the spinneret opposite to the transport direction of the fiber assembly, it is provided according to the invention that the fiber guiding element is configured as described above or in the following.

The spinneret of course comprises the components or sections required for the yarn production, such as, in particular, a yarn-forming element with a drawing channel and a plurality of air nozzles, by means of which compressed air can be introduced into the cyclone chamber during operation of the spinneret.

It is also advantageous if the direction of rotation in which the intermediate region is at least partially twisted about the longitudinal axis corresponds to the direction of rotation of the swirling air flow, as seen in the conveying direction. In other words: the middle region of the fiber guiding element has the same direction of rotation (clockwise or counterclockwise) as the swirling air flow generated by the air nozzle inside the cyclone chamber, viewed in the region of the fiber strand inlet of the spinneret with respect to the longitudinal axis of the fiber guiding element and in the direction of transport of the fiber strands. The fiber assembly is thus rotated about the longitudinal axis through the intermediate region in a direction corresponding to the direction of rotation of the swirling air when it enters the spinneret. The direction of rotation of the swirling air is in turn determined by the orientation of the air nozzle.

Drawings

Further advantages of the present invention are illustrated in the following examples. The figures each schematically show the following:

FIG. 1 is a cut-away, partially broken-away section of a spinneret according to the present invention, and

fig. 2 to 5 are different views of a fibre guiding element according to the invention.

Fig. 6 shows selected sections of another fiber guiding element according to the invention.

Detailed Description

Fig. 1 shows a cut-out of a spinneret 2 of an air-flow spinning machine. In the spinneret 2, only the inlet region for the fiber assembly 3 and the part of the cyclone chamber 16 following in the predetermined transport direction of the fiber assembly 3, which are important for the understanding of the invention, are shown.

The spindle-shaped yarn forming element 13 extends in principle into the cyclone chamber 16, as is known from the prior art. Furthermore, an air nozzle 14 is shown, through which compressed air is introduced into the spinneret 2 during operation of the spinneret 2, wherein the air nozzle 14 is arranged such that a swirling air flow is generated in the region of the yarn forming element 13. The outer fibers of the fiber assembly 3 entering the spinneret 2 are wound around the inner fibers by the swirling air flow, so that a yarn 17 is produced in the region of the yarn-forming element 13, which can finally be drawn out of the spinneret 6 via the drawing channel 15.

In order to prevent the yarn 17 from rotating counter to the transport direction T and spreading outside the spinneret 2, the spinneret 2 has a fiber guiding element 1 formed according to the invention, which can be fixed in the spinneret 2, for example, by a form-locking or force-fitting connection.

The fiber guide element 1 itself is shown in detail in fig. 2 to 5, wherein fig. 5 shows a plan view of the fiber guide element 1 (in comparison to fig. 2, i.e. from above).

As can be seen from the figures, the fiber guiding element 1 has a fiber guiding surface, along which the fiber strand 3 is guided as it enters the spinneret 2.

According to the invention, the fiber guiding surface is composed of three regions. In particular, the fiber guiding element 1 has an inlet area 4, with which the fiber assembly 3 first comes into contact when the fiber assembly 3 is introduced into the spinneret 2 in the defined transport direction T. Furthermore, an intermediate region 5 is present, which adjoins the inlet region 4 in the transport direction T and finally merges into an outlet region 6, through which the fiber assembly 3 passes before it enters the cyclone chamber 16, and which is then passed through the outlet region 6.

In this respect, the invention provides, among other things, that only the intermediate region 5 is formed by a surface which is twisted about the longitudinal axis L of the fiber guiding element 1, whereby the fibers are guided along the intermediate region 5 on a substantially helical or spiral path, whereas the inlet region 4 and the outlet region 6, which is separated from the intermediate region 5 by a dividing line 7, are formed by separate surface sections which are either designed as flat structures or as structures which project in the direction of the fiber bundle 3, the minimum distance between the mentioned dividing line 7 and the longitudinal axis L of the fiber guiding element 1 being indicated by the reference character a.

While the outlet region 6 is formed by a single surface, it is particularly advantageous if it is composed of a first outlet section 8 and a second outlet section 9 following it in the transport direction T. While the first outlet section 8 can be formed by the cross section of the essentially cylindrical base body of the fiber guiding element 1, it is advantageous if the second outlet section 9 is formed as a flattening 10 of an otherwise truncated cone-shaped end section 11 of the fiber guiding element 1.

Viewed from the inlet region 4, the inlet region is advantageously formed not by a flat surface but by a surface which is convexly curved in the direction of the fiber strand 3, wherein the radius of curvature is designated by the reference symbol R.

In particular, the fiber guiding element 1 can be produced from an initially cylindrical base body, wherein individual sections of the base body are cut off in such a way that the final shape with the mentioned regions 4, 5 and 6 of the fiber guiding surface and the partially truncated cone-shaped end section 11 is produced. Accordingly, the fiber guiding element 1 can have an outer surface 12 on an imaginary cylinder with a diameter D2, which adjoins the respective one of the regions 4, 5 and 6 mentioned in the circumferential direction.

The axis of symmetry of the imaginary cylinder also coincides with the above-mentioned longitudinal axis L of the fiber guiding element 1.

The truncated-cone-shaped end section 11 furthermore has a cover surface 18 which preferably extends perpendicularly to the longitudinal axis L of the fiber guiding surface 1.

The dimensions and angles mentioned above can furthermore be gathered in particular from fig. 2 and 5, since they are not indicated in all the figures for reasons of clarity.

The fiber guiding element 1 therefore has a longitudinal extent I extending in the direction of the longitudinal axis L, which corresponds in principle to the total length of the fiber guiding element 1.

Likewise, the inlet region 4 has a defined longitudinal extent II. The longitudinal extension of the intermediate zone 5 is provided with the reference sign III. Finally, the outlet region 6 also has a certain longitudinal extent, which is indicated by the reference sign IV.

The above-mentioned end section 11 of the fiber guiding element 1, which is in the form of a laterally flattened truncated cone, has a height indicated by the letter H, while the cover surface 18 of the end section 11 has a diameter D1.

Finally, with regard to the angles mentioned in the general description, reference is made to fig. 2 and 5, which show the angle α between the outer side of the partially frustoconical end section 11 and the cover surface 18 of the fiber guiding element 1, the angle β between the first outlet section 8 and the second outlet section 9, the angle σ between the longitudinal axis L and the first outlet section 8 or the second outlet section 9, and the angle γ between the inlet region 4 and the outlet region 6, which is produced by the twisting of the intermediate section 5.

With regard to the magnitudes of the dimensions and angles mentioned, reference is made to the general description.

It is furthermore noted that the first outlet section 8 can be inclined relative to the second outlet section 9 by an angle of between 0 ° and 20 °, so that the sections 8, 9 mentioned do not necessarily lie in a common plane.

Finally, fig. 6 shows the outlet area of a further embodiment of the fiber guiding element 1 according to the invention (partially cut away below). As can be gathered from this figure, the outlet region 6 can be formed at least partially by a concave, in the illustrated embodiment groove-like surface. In addition or as an alternative, such a shaping can of course also be realized in the inlet region 4 or in the intermediate region 5.

The invention is not limited to the embodiments shown and described. Modifications within the scope of the claims are equally possible as any combination of the described features, even if they are shown and described in different parts of the description or claims or in different embodiments, provided that they do not contradict the theory of the independent claims.

List of reference numerals:

1 fiber guide element

2 spinning jet

3 fibre strand

4 inlet area of fiber guide surface

5 middle area of fiber guide surface

6 outlet region of fiber guide surface

7 boundary between the intermediate region and the outlet region

8 first outlet section

9 second outlet section

10 flattened section

11 partially truncated cone-shaped end section

12 outer surface on the cylinder

13 yarn forming element

14 air nozzle

15 draw channel

16 cyclone chamber

17 yarn

18 covering surface

I degree of longitudinal extension of the fibre-guiding element extending in the direction of the longitudinal axis

II longitudinal extension of the inlet region in the direction of the longitudinal axis

III longitudinal extension of the middle region in the direction of the longitudinal axis

Longitudinal extent of the IV outlet region extending in the direction of the longitudinal axis

A minimum distance between a dividing line separating the central region from the outlet region and the longitudinal axis of the fiber guiding element

D1 diameter of the cover surface of the end section of the fiber guiding element

D2 outer diameter of cylinder on which at least a portion of the outer surface of the fiber guide member is located

Height of the partially truncated end section of the H-fiber guide element

L longitudinal axis

Conveying direction of T-fiber strand

Radius of curvature of R inlet region

α is partially the angle between the outer side of the truncated-cone-shaped end section 11 and the cover surface 18 of the fiber guiding element

β angle between first and second outlet sections

Angle between the longitudinal axis and the first and/or second outlet section

Angle between gamma inlet and outlet regions