DE102020117391A1 - Spinning machine and swivel device for a guide table of a spinning machine - Google Patents

Abstract

In a spinning machine, in particular a ring spinning machine with a large number of drafting systems (2) arranged next to one another, driven lower cylinders (3.1, 4.1, 5.1) mounted in punches (35) and arranged above them, held by a loading arm (19) and held against the lower cylinders ( 3.1, 4.1, 5.1) pressed top rollers (3.2, 4.2, 5.2) each forming a nip line. A guide device is arranged in a main drafting field of the drafting system (2) and feeds a fiber sliver (6) running through the drafting system (2) to a pair of output rollers (5). The guiding device is a top apron (22) running around a top roll (4.2) and a bottom apron (21) running around a bottom cylinder (4.1) and a guide table (24). The guide table (24) is arranged on a pivoting device (30) in order to adjust the inclination of the guide table (24) with respect to a drafting field plane (E) between the clamping line (K2) of the apron top roller (4.2) and the apron bottom cylinder (4.1). Adjust the entrance of the guide device and the clamping line (K3) of the pair of output rollers (5) by pivoting the guide table (24) about a pivot axis (D). The pivot axis (D) is on the side of the drawing field plane (E) on which the top apron (22) is located, preferably at a distance (H) which is greater than the distance (h) of the axis (A) of the apron top roller (4.2) from the drawing field plane (E) is arranged.

Description

The present invention relates to a spinning machine, in particular a ring spinning machine with a large number of drafting units arranged next to one another, with driven lower cylinders mounted in punches and with upper rollers arranged above them, held by a pendulum carrier and pressed against the lower cylinders and each forming a nipping line Drafting system a guide device is arranged, which feeds a sliver running through the drafting device to a pair of output rollers, and the guide device has an upper apron running around an upper apron roller and a lower apron running around an apron lower cylinder and a guide table, and the guide table is arranged on a pivoting device, about the inclination of the guide table with respect to a stretching field plane between the clamping line of the apron upper roll and the apron lower cylinder at the entrance of the guide device and the clamping line of the output roll Set npaares by pivoting the guide table about a pivot axis, as well as a corresponding pivoting device.

Known spinning machines, such as ring spinning, air-jet spinning or compact spinning machines, have drafting systems with double belts in the main drafting zone. The two belts guide the fibers of a sliver to be drawn to an output roller pair of the drafting device, which output roller pair has an output upper roller and an output lower cylinder. As a rule, the stretching field runs largely in a straight line between the rollers of the double belts and the pair of output rollers. It is also known, however, that a pin which deflects the sliver is arranged between the double belt and the pair of output rollers. The strength of the deflection depends on the desired yarn count and the drawn fiber material. Because the fibers are wrapped around the pin, the fibers in the area of the main draft zone are better controlled, which improves uniformity and reduces thick and thin areas in the yarn. The yarn tear strength can also be increased in this way.

The disadvantage of using the pin is that the pin must be set to the required deflection at each spinning station or in the drafting system. In spinning machines with a large number of drafting devices arranged next to one another, this requires a great deal of work. There is also the risk of incorrect settings due to different settings on the various drafting systems.

From the EP 2 886 689 A1 a spinning machine is known which has a plurality of side-by-side drafting devices with driven lower cylinders mounted in punches and with upper rollers arranged above them, held by a pendulum carrier and pressed against the lower cylinders and each forming a nip line. A guide device is arranged in the main drafting zone of the drafting system, which has a circumferential lower apron and upper apron. By means of a guide table of the lower apron, the guide device feeds a sliver running in a drafting system level through the drafting system to a pair of output rollers. The guide table is attached to the punches in table mounts. The respective table receptacle has a receptacle point which interacts with a corresponding receptacle element of the guide table. The position of the table receptacle and / or the receptacle location determines the inclination of the guide table in order to influence the fiber line in such a way that it deviates from the direct connecting line between the nip line at the entrance of the guide device and the nip line of the pair of output rollers. The possibility of changing the position of the guide table by changing its attachment to the punches means that the inclination of the guide table can be changed. As a result, the deflection of the stretched field can be increased to a greater or lesser extent. The adjustment is limited by the output lower cylinder, as this must not be touched by the apron.

The object of the present invention is therefore to create a spinning machine and a pivoting device in which a large pivoting range of the guide device is made possible.

The object is achieved by a spinning machine and a pivoting device with the features of the independent claims.

A generic spinning machine, in particular a ring spinning machine, has a large number of side-by-side drafting devices with driven lower cylinders mounted in punches and with upper rollers arranged above them, held by a pendulum carrier and pressed against the lower cylinders and each forming a nip line. In a main drafting zone of the drafting system, a guide device is arranged which feeds a sliver running through the drafting system to a pair of output rollers. The guide device has an upper apron running around an upper apron roller and a lower apron running around a lower apron cylinder and a guide table. The guide table is arranged on a pivoting device, around the Adjust the inclination of the guide table with respect to a stretching field plane between the clamping line of the apron upper roller and the apron lower cylinder at the entrance of the guide device and the clamping line of the output roller pair by pivoting the guide table about a pivot axis.

According to the invention, the pivot axis is arranged on the side of the stretching field plane on which the upper apron is located. The distance between the pivot axis and the plane of the stretching field is preferably greater than the distance between the axis of the apron top roller and the plane of the stretching field.

By arranging the pivot axis on the side of the stretched field plane, it is possible for the guide table to be pivoted in such a way that contact with the output lower cylinder is avoided over a large angle of inclination. The deflection of the sliver from the plane of the drawing field can be quite considerable as a result. Nevertheless, it is possible that the guide device extends far into the gusset of the pair of output rollers. The use of a pin to deflect the sliver is no longer necessary. It is particularly advantageous if the distance between the pivot axis and the plane of the stretching field is greater than the distance between the axis of the apron top roller and the plane of the stretching field. As a result of the arrangement far above the level of the stretching field, the guide table is pivoted out of the gusset of the two output rollers without the lower apron or the upper apron touching the output lower cylinder.

It is advantageous if the pivot axis is arranged in the running direction of the sliver in front of the guide table, preferably in front of the axis of the apron top roller. With this arrangement of the pivot axis, in particular in connection with the arrangement above the stretching field plane, a particularly advantageous pivoting of the guide table is made possible. The guide table can be pivoted largely tangentially along the output lower cylinder. A strong deflection of the sliver from the plane of the drawing field is thus possible, which means that a deflection pin can be dispensed with. The further above the stretching field plane the pivot axis is arranged, the more advantageous it is for a pivoting movement of the guide table without contacting the output lower cylinder. The arrangement of the pivot axis in front of the guide table or in front of the axis of the apron top roller ensures that the inlet area of the guide table does not pivot through the drawing field plane and thus causes a further deflection of the sliver out of the drawing field plane. In some applications this can be an advantage, but it should generally be avoided.

It is particularly advantageous if the guide table is arranged on holders that are rotatable about the pivot axis, in particular in table receptacles of the holders. By accommodating the guide table in the table mounts of the pivotable holder, it is also possible to use guide tables of different shapes. This allows you to influence the requirements for spinning different fibers or for producing different yarns. The holder can be fastened to the guide table, for example, by means of screws, clamps or rivets. Of course, a different type of fastening of the holder to the guide table is also possible if it is ensured that a predetermined position of the guide table can be maintained when the spinning machine is in operation.

It is also advantageous if the pivot axis is arranged on the punch or on a carrier which is fastened to a component of the spinning machine, in particular the punch or a punching rail. The pivot axis of the holder is thus preferably arranged on one of these components. It is particularly important to ensure that the pendulum carrier with the upper rollers can be lifted off the lower cylinders without a collision with the holders of the guide table. When the holder is attached to the punches of the spinning machine, it is particularly advantageous that the guide table extends over a large number of spinning stations and drafting units. The guide table can thus be adjusted in its inclination for several drafting devices at the same time.

It is also extremely advantageous if the guide table or the holder interacts with a table support in order to fix the position of the guide table. A table support supports the guide table to secure it in the predetermined position. This fixes the inclination of the guide table. In addition, this prevents the guide table, especially if it is provided for several drafting devices, from twisting when subjected to a load and thus different inclinations of the guide table are present in the individual drafting devices.

Furthermore, it is advantageous if the table support has several steps or a wedge surface or an eccentric in order to make the inclination of the guide table adjustable in steps or steplessly. Several predetermined inclinations can be set, in particular through the several stages. Depending on the fiber material to be spun or the yarn to be produced, it can be used quickly the appropriate inclination of the guide surface can be generated. The stepless wedge surfaces or eccentrics are advantageous for an individual setting of the guide table.

It has particular advantages if the table support is a part of a set of several interchangeable table supports with different stops in order to be able to set different predetermined inclinations of the guide table. The individual table supports can be color-coded, for example, so that a suitable table support can be selected quickly for a specific inclination of the guide table. In addition, a quick visual check of the spinning machine with regard to the correct and equal setting of the inclination of the guide tables of the spinning machine is possible.

It is advantageous if the guide table extends along several of the drafting devices and the holders of adjacent guide tables are coupled to one another with a connecting element. By connecting the adjacent guide tables or their holders, twisting of the guide tables when they are loaded can be reliably avoided.

If the guide table has an inclination of up to 30 °, preferably up to 20 °, with respect to the undeflected fiber line, most of the fiber materials and yarn counts processed in conventional spinning machines can be stretched particularly advantageously. Which inclination is particularly suitable will have to be determined in individual cases through tests.

If the guide table has an immersion depth compared to the undeflected fiber line of up to 15 mm, preferably up to 5 mm, a particularly favorable draw field deflection is also achieved here for most fiber materials and yarn counts.

Both the inclination and the depth of immersion of the guide table are thus possible to be greater than in the prior art with the same proximity to the pair of output rollers.

There are particular advantages if the drafting system has a compression unit and a main compressor or a pre-compression of the compression unit is arranged between the output of the guide device and the pair of output rollers. A special treatment of the sliver or the yarn is achieved by a compression unit. Compressor units can either work pneumatically by guiding the fibers over a vacuum slot. Alternatively, mechanical compression is also possible by conveying the fibers through a conically tapering channel. In both cases, the fibers are pressed closer together. To support this process, it is advantageous if the fibers are slightly stretched beforehand. In this way, the inclination of the guide table from the level of the stretching field is used, since in this case the fibers are guided in particular around the upper apron and are thereby tightened. The inclination of the guide device out of the plane of the stretching field can thus replace a deflection pin around which the fibers would otherwise have to be guided. The adjustment of the guide device according to the invention is much easier to carry out than the adjustment of each deflection pin on each drafting device of the spinning machine.

It is also advantageous if the compressor unit has mechanical and / or pneumatic compressor elements. In addition to a purely mechanical or a purely pneumatic compression of the sliver, a combination is also possible in which the pre-compressor mechanically compresses the fibers and then the main compressor performs a pneumatic compression.

A pivoting device according to the invention for a guide table of a guide device has a guide table and holder for the guide table in order to adjust the inclination of the guide table in relation to a drafting field plane between a clamping line of an apron upper roller and an apron lower cylinder at the entrance of the guide device and on a drafting system of a spinning machine described above to be able to adjust a clamping line of a pair of output rollers by pivoting the guide table. The guide table has an inlet area and an outlet area for a strap. The holders of the guide table each have a pivot axis. The pivot axis is arranged above the side of the guide table on which the lower apron can be guided, preferably at a distance from the guide table which is greater than 10 mm.

By arranging the pivot axis above the guide table, it is possible that the guide device can reach very far, for example closer than 5 mm in front of the clamping point of the pair of output rollers, into the gusset between the two output rollers and still allow the guide device, in particular the guide table, to pivot far is made possible down into the area of the lower output cylinder. The pivoting device according to the invention can be retrofitted in existing spinning machines. For this it is only necessary that the swivel device with its holders on existing components of the spinning machine, is attached in particular to the punch or the punch rail. The pivoting device thus enables the guide table to have a wide pivoting path in a suitable manner without colliding with the output rollers, in particular the lower output cylinder. The guide table can thus be arranged both within the stretching field plane, but if necessary also be inclined downwards far away from the stretching field plane.

It also has advantages if, when the guide device is installed as intended, the pivot axis is arranged in the running direction of the sliver in front of the inlet area of the guide table, preferably more than 10 mm in front of the inlet area. Due to the arrangement in front of the inlet area of the guide table, it is possible that the guide table can assume a particularly large angle of inclination with respect to the drafting system level without colliding with the output lower cylinder. The setting options of the guide table are thus additionally expanded.

It is also extremely advantageous if the guide table or the holder interacts with a table support in order to fix the position of the guide table. One or more table supports can be provided per guide table. It is advantageous if a central table support is arranged approximately in the middle of the length of the guide table. The shape and size of the table support can determine the individual inclination angle of the guide table.

There are also advantages if the table support has several steps or a wedge surface or an eccentric in order to make the inclination of the guide table steplessly or steplessly adjustable. In this way, a predetermined inclination of the guide table can be set. The multiple stages of the table support can come into contact with the guide table or the holder, for example, by rotating the table support. The several stages can, however, also be integrated in a wedge-shaped component that is brought into a contact position with the guide table or the holder to a greater or lesser extent. In the case of a wedge surface or an eccentric, on the other hand, a continuous adjustment of the inclination of the guide table can be achieved by shifting or rotating.

It is also advantageous if the table support is a part of a set of several interchangeable table supports with different stops for the guide table in order to be able to set different predetermined inclinations of the guide table. The individual table supports can be marked differently, for example, in order to identify a certain inclination of the guide table. The marking can be done with a lettering or a specific color.

It is also advantageous if the guide table is attached to the table support with a magnet. The magnetic attachment of the guide table to the table support enables the inclination to be adjusted quickly. Nevertheless, the table support and the guide table are so firmly connected that they cannot separate from each other when the machine is in operation.

• 1 eine schematische Darstellung eines Schnittes einer Ringspinnmaschine,
• 2 einen Ausschnitt aus einem Streckwerk mit einer Schwenkeinrichtung,
• 3 einen Ausschnitt aus einem Streckwerk mit einer weiteren Schwenkeinrichtung,
• 4 eine Draufsicht auf eine Schwenkeinrichtung,
• 5 einen Ausschnitt aus einem Streckwerk mit einer Tischstütze und
• 6 einen Ausschnitt aus einem Streckwerk mit einem schwenkbaren Führungstisch und einer Verdichtungsvorrichtung.

Further advantages of the invention are described in the following exemplary embodiments. It shows,

• 1 a schematic representation of a section of a ring spinning machine,
• 2 a section of a drafting system with a swivel device,
• 3 a section from a drafting system with a further swivel device,
• 4th a top view of a swivel device,
• 5 a section of a drafting system with a table support and
• 6th a section of a drafting system with a swiveling guide table and a compression device.

In the following description of the alternative exemplary embodiments, the same reference symbols are used for features which are identical and / or at least comparable in their design and / or mode of operation. Unless these are explained again in detail, their design and / or mode of action corresponds to the design and / or mode of action of the features already described above. Not all components are shown in all illustrations. If they are not shown for reasons of clarity, these components are also considered to be present. The present invention is explained using a ring spinning machine. But it can also be used for other spinning machines that use a drafting system, for example air-jet spinning machines.

1 shows a schematic representation of a section of a spinning station 1 of a spinning machine, in particular a ring spinning machine with a compressor device 20. Individual components of the spinning machine are shown by way of example, namely a drafting device 2 and a spinning device 10. The drafting device 2 consists of three pairs of rollers, a pair of intake rollers 3, a pair of drafting rollers 4 and a pair of output rollers 5. Each of the roller pairs 3, 4 and 5 is formed by a lower cylinder 3.1, 4.1 and 5.1 or a lower roller and an upper roller 3.2, 4.2 and 5.2. The two rollers of each roller pair 3, 4 and 5 are pressed against each other and at their point of contact each form a clamping point for a sliver 6 entering the drafting system 2, with the clamping point K1 by the draw-in roller pair 3, the clamping point K2 by the drafting roller pair 4 and the clamping point K3 is formed by the pair of output rollers 5. The clamping points K1, K2 and K3 form a drawing field plane E. The sliver 6 runs essentially in this drawing field plane E and is drawn there. Due to the different speeds of the roller pairs 3, 4 and 5, the sliver 6 is drawn. During the drawing, the sliver 6 is transported through the drawing device 2 at the same time. The rollers 4.1 and 4.2 of the drafting roller pair 4 are each wrapped by a strap 21 and 22, respectively. The upper apron 22 runs over a deflection element 23, also called the upper apron cage, while the lower apron 21 is guided over a guide table 24. The sliver 6 is guided between the two aprons 21 and 22. After leaving the drafting system 2, the drawn fiber sliver 6 arrives at the compression device 20, in which it is compressed.

Between the clamping point K3 and the clamping point K4, the compression device 20 has a suction pipe 8 with a suction slot 9, at the edge of which the fibers of the sliver 6 are bundled or compressed. The drawn fiber sliver 6 is transported over the suction tube 8 by means of a conveyor belt 11, which loops around the suction tube 8 and a deflection rod 25. The conveyor belt 11 is driven by means of the delivery roller 7. The delivery roller 7 is set in rotary motion via the top roller 5.2 of the output roller pair 5 by means of elements not shown. Underpressure, which is present in the suction tube 8 and sucks in the sliver 6 via the suction slot 9, also acts through the conveyor belt 11, which is air-permeable.

After the compression device 20, the sliver 6, which forms a thread 12 after the clamping point K4, arrives at a thread guide 13 and is passed on to the spinning device 10. The spinning device 10 essentially consists of a ring rail 14, which carries a spinning ring 15, and a spindle rail 16 on which a spindle 17 is attached. The thread 12 arrives at the spindle 17 via a runner 18. In order to spin the sliver 1, the spindle 17 is set in rotation. This has the consequence that the rotor 18 is also set in rotation by the thread 12 on the spinning ring 15. The thread 12 is given a rotation by the rotation of the spindle 17 and rotor 18. The thread 12 is wound onto the spindle 17 by moving the ring rail 14 or the spindle rail 16 up and down.

To open the drafting system 2, the upper rollers 3.2, 4.2 and 5.2 can be raised from the lower cylinders 3.1, 4.1 and 5.1. For this purpose and to close the drafting system 2 again, a loading arm 19, to which the top rollers 3.2, 4.2 and 5.2 and the delivery roller 7 are fastened in a known manner, is moved around a pivot point P in the direction of the arrow R.

The described compressor device 20 is optional for a corresponding ring spinning machine. It can also be omitted if necessary.

2 shows a section from the drafting system 2 with a pivoting device 30. The pivoting device 30 causes the apron 21 to run essentially below the plane E of the drafting field. For this purpose, the guide table 24 is pivoted downwards. The guide table 24 has an inlet area 31 and an outlet area 32 for the sliver 6. The sliver 6 runs between the clamping points K2 and K3 essentially below the level of the stretching field E. It is guided between the aprons 21 and 22. Then it is deflected back up into the area of the stretching field level E. The sliver 6 makes contact with a nose of the deflecting element 23 of the upper strap 22. As a result, the sliver 6 is slightly stretched. The use of a pin for deflecting and stretching the sliver 6 is no longer necessary.

In order to be able to swivel the guide table 24, it is arranged on a holder 33 of the swivel device 30. The guide table 24 is preferably fastened to the holder 33 with a releasable connection. Such a releasable connection can be a screw connection or a clamp connection. This makes it possible for the guide table 24 to be detached from the holder 33 if necessary, for example in order to be able to replace straps 21.

A pivot axis D about which the holder 33 can pivot is essential for the pivot device 30. The pivot axis D is part of a swivel joint, the stationary part of which is arranged on a carrier 34. The carrier 34 is in turn fastened to a punch 35 of the lower cylinder 4.1 or a punch rail 36. The advantage of attaching the carrier 34 and thus the pivot axis D to the punch 35 is that when the punch 35 is displaced, the carrier 34 and the pivot axis D with the holder 33 and the guide table 24 also move in the same way is pushed. It is of course also possible for the pivot axis D to be fastened directly to the punch 35 if the punch 35 is designed accordingly.

As a result of the arrangement of the pivot axis D above the stretching field plane E, when the holder 33 is pivoted with the guide table 24, the outlet area 32 of the guide table 24 can on the one hand be arranged far in the gusset of the output roller pair 5 and still not be the same when the holder 33 is pivoted Lower cylinder 5.1 contacted. This is indicated by the curved double arrow, which represents the possible pivoting path W of the outlet region 32 of the guide table 24. By arranging the pivot axis D above the stretching field plane E, an optimal arrangement of the pivot path W is achieved. Accordingly, a large angle of inclination α of up to 30 ° is possible. The sliver 6 is deflected with an immersion depth T of up to 15 millimeters below the level E of the drawing field.

To fix the intended inclination of the guide table 24, a table support 37 is provided. The table support 37 is preferably arranged centrally with respect to the longitudinal direction of the guide table 24. However, it can also act directly on the holder 33. With an eccentric 38, on which a base 39 of the guide table 24 is supported, the corresponding inclination of the guide table 24 can be set. The position of the eccentric 38 can be identified, for example, by markings or lever positions, so that a defined setting of the inclination of the guide table 24 is possible.

3 shows a section from a drafting system 2 with a further embodiment of a pivoting device 30. In this embodiment, the carrier 34 is fastened to the punching rail 36. A stop 39, which limits the pivoting path of the holder 33, is provided on the carrier 34. In this exemplary embodiment, the holder 33 is passed below the lower cylinder 4.1. From below, it engages the guide table 24 in a table receptacle 40, which is releasably attached to the holder 33. In the event of a subsequent installation in a machine and the reuse of the existing guide table 24, the holder 33 is cut out in such a way that the guide table 24 can be freely pivoted in its pivoting range.

The inclination of the guide table 24 is limited by an exchangeable table support 37. In this exemplary embodiment, this works together with the holder 33, but could also interact directly with the guide table 24. The table support 37 is part of a set of table supports. Each of these table supports 37, 37 'and 37 "has a different height and a different wedge angle, so that, depending on the use of a corresponding table support 37, 37' or 37", the holder 33 can pivot more or less far down and thus the inclination of the Guide table 24 adjusted. The individual table supports 37, 37 'or 37 "can be color-coded for easier differentiation, for example, or provided with letters or numbers as identifiers clipped in.

The pivot axis D is arranged above the stretching field plane E. The pivot axis D is preferably located at a distance L from the inlet area 31 of the guide table 24, which is greater than 10 millimeters. It is particularly advantageous if the distance L is greater than the distance I, which is between the inlet area 31 of the guide table 24 and an axis A of the top roller 4.2. Of course, other arrangements of the pivot axis D above the guide table 24 are also possible in order to achieve the advantages according to the invention.

It is also advantageous if the pivot axis D is arranged at a height H above the stretching field plane E or the top of the guide table 24, the height H preferably being greater than 10 millimeters. It is particularly advantageous if the height H is greater than the height h at which the axis A of the top roller 4.2 is located. The corresponding arrangement of the pivot axis D enables a large angle of inclination α without collision of the guide table 24 or the apron 21 with the lower cylinder 5.1, even if the run-out area 32 of the guide table is far in the gusset between the pair of output rollers 5.

4th shows a plan view of a swivel device 30. The swivel device 30 has two holders 33, between which the guide table 24 is arranged. In this exemplary embodiment, the guide table 24 is provided for guiding eight aprons 21, which are only partially shown. It thus extends over an entire punch field. In the middle of the guide table 24, between two straps 21, a base 39 is attached to the guide table 24. The base 39 supports the guide table 24 on the table support 37. The table support 37 has several steps in the manner of an edged eccentric 38 and can bring different steps into connection with the base 39, for example by rotating, whereby the inclination of the guide table 24 changes. In order to ensure a good connection between the base 39 and the table support 37, a magnet 41 is arranged on the base 39 or the table support 37 net, which pulls the base 39 onto the table support 37.

The pivot device 30 has on its holders 33 pivot axes D, which with the carriers 34, which in the previous 2 and 3 are shown, interact. In order to avoid twisting of the guide table 24, it can be provided that two adjacent holders 33, 33 ′ are connected with a connecting element 26. This coupling of adjacent pivoting devices 30, 30 'brings about a stable and uniform mounting and inclination of the guide tables 24, 24' overall.

The pivot axes D can be in bearings of the carrier 34 ( 2 , 3 ), which at the same time are also the receptacles for the adjacent guide rails 24, 24 'or holders 33, 33'.

In 5 a further exemplary embodiment of a section of a drafting system 2 with a table support 37 is shown. Similar to the execution according to 4th The base 39 is attached to the guide table 24. The base 39 has the magnet 41, which interacts with the table support 37. The table support 37 is designed in the manner of an eccentric 38 which has different surfaces. The surfaces have a different spacing and a different inclination to an axis of the eccentric of the table support 37. As a result, the support 40 is supported at different heights on the table support 37, so that different inclinations of the guide table 24 can be set.

In the present embodiment, the pivot axis D is arranged at a height H above the stretching field plane E, which is smaller than the height h of the axis A of the top roller 4.2. In addition, the pivot axis D is located above the area of the guide table 24. This also enables a large pivoting path W, which takes place without colliding with the lower cylinder 5.1.

While in 1 a pneumatic compressor device 20 is shown 6th a mechanical compressor device 20. After the guide table 24, a pre-compressor 42 is arranged in the gusset of the pair of output rollers 5. The sliver 6, which emerges from the guide of the two aprons 21 and 22, runs on the way to the clamping point K3 through the pre-compressor 42. The pre-compressor 42 compresses the sliver 6 before it reaches the clamping point K3. After the clamping point K3, the sliver 6 runs through a main compressor 43, in which the sliver 6 is further compressed. The sliver 6 then arrives at the clamping point K4 of the delivery roller 7 with the lower cylinder 5.1 and is then twisted into a yarn. It is also possible that the main compressor 43 after the terminal point K 3 is dispensed with and instead the main compression takes place before the terminal point K3, at which the pre-compressor 42 is shown in this illustration.

Due to the above-described arrangement of the pivot axis D of the guide table 24, it is possible that this can be arranged very close, that is only a few millimeters, in front of the supercharger 42 or in front of the clamping point K3 and yet can be greatly changed in its inclination.

The present invention is not limited to the illustrated and described exemplary embodiments. Modifications within the scope of the claims are just as possible as any combination of the features described, even if they are shown and described in different parts of the description or the claims or in different exemplary embodiments, provided that there is no contradiction to the teaching of the independent claims.

List of reference symbols

1

Spinning position

2

Drafting system

3

Pair of feed rollers

3.1, 4.1 and 5.1

Lower cylinder

3.2, 4.2 and 5.2

Top roller

4th

Drafting roller pair

5

Output roller pair

6th

Sliver

7th

Delivery roller

8th

Suction pipe

9

Suction slot

10

Spinning device

11th

Conveyor belt

12th

thread

13th

Thread guide

14th

Ring bench

15th

Spinning ring

16

Spindle bench

17th

spindle

18th

runner

19th

Low stress

20th

Compressor unit

21

Lower strap

22nd

Upper apron

23

Deflection element

24

Leadership table

25th

Deflection rod

26th

Connecting element

27

pen

30th

Swivel device

31

Inlet area

32

Run-out area

33

holder

34

carrier

35

punch

36

Punching rail

37

Table support

38

eccentric

39

base

40

Table mount

41

magnet

42

Pre-compressor

43

Main compressor

A.

axis

D.

Swivel axis

E.

Stretched field level

H

height

H

height

K1

Terminal point

K2

Terminal point

K3

Terminal point

K4

Terminal point

L.

distance

I.

distance

P.

pivot point

R.

Direction of arrow

T

Immersion depth

W.

Swivel path

α

Tilt angle

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2886689 A1 [0004]

Claims (18)

Spinning machine, in particular a ring spinning machine with a large number of drafting devices (2) arranged next to one another, with driven lower cylinders (3.1, 4.1, 5.1) mounted in punches (35) and with lower cylinders (3.1, 4.1, 5.1) arranged above them, held by a loading arm (19) and held against the lower cylinders (3.1, 4.1, 5.1) pressed top rollers (3.2, 4.2, 5.2) each forming a nipping line, with a guide device being arranged in a main drafting zone of the drafting unit (2), which guides a sliver (6) running through the drafting unit (2) to an output roller pair (5 ), and the guide device has an upper apron (22) running around an apron upper roller (4.2) and a lower apron (21) running around an apron lower cylinder (4.1) and a guide table (24) and the guide table (24) on a Pivoting device (30) is arranged to adjust the inclination of the guide table (24) with respect to a stretching field plane (E) between the clamping line (K2) of the apron top roller (4.2) and the belt Chen lower cylinder (4.1) at the entrance of the guide device and the clamping line (K3) of the output roller pair (5) by pivoting the guide table (24) about a pivot axis (D), characterized in that the pivot axis (D) is on the side of the stretching field level (E), on which the upper apron (22) is located, preferably at a distance (H) which is greater than the distance (h) of the axis (A) of the upper apron roller (4.2) from the plane of the stretching field (E), is arranged. Spinning machine according to the preceding claim, characterized in that the pivot axis (D) is arranged in the running direction of the sliver (6) in front of the guide table (24), preferably in front of the axis (A) of the apron top roller (4.2). Spinning machine according to one or more of the preceding claims, characterized in that the guide table (24) is arranged on holders (33) rotatable about the pivot axis (D), in particular in table receptacles (40) of the holders (33). Spinning machine according to one or more of the preceding claims, characterized in that the pivot axis (D) is arranged on the punch (35) or on a carrier (34) which is attached to a component of the spinning machine, in particular the punch (35) or a punch rail (36), is attached. Spinning machine according to one or more of the preceding claims, characterized in that the guide table (24) or the holder (33) cooperates with a table support (37) in order to fix the position of the guide table (24). Spinning machine according to one or more of the preceding claims, characterized in that the table support (37) has several steps or a wedge surface or an eccentric (38) in order to make the inclination of the guide table (24) steplessly or steplessly adjustable. Spinning machine according to one or more of the preceding claims, characterized in that the table support (37) is a part of a set of several interchangeable table supports (37, 37 ', 37 ") with different stops to set different predetermined inclinations of the guide table (24) to be able to. Spinning machine according to one or more of the preceding claims, characterized in that the guide table (24) extends along several of the drafting units (2) and the holders (33) of adjacent guide tables (24) are coupled to one another with a connecting element (26). Spinning machine according to one or more of the preceding claims, characterized in that the guide table (24) has an incline (a) of up to 30 °, preferably up to 20 °, with respect to the plane of the drawing field (E). Spinning machine according to one or more of the preceding claims, characterized in that the guide table (24) has an immersion depth (T) with respect to the stretching field plane (E) of up to 15 mm, preferably up to 5 mm. Spinning machine according to one or more of the preceding claims, characterized in that the drafting system (2) has a compression unit (20) and a main compressor (43) or a pre-compression (42) of the compression unit ( 20) is arranged. Spinning machine according to one or more of the preceding claims, characterized in that the compressor unit (20) has mechanical and / or pneumatic compressor elements. Swiveling device for a guide table (24) of a guide device, with a guide table (24) and with holders for the guide table (24) in order to adjust the inclination of the guide table (24) with respect to a drawing field plane (E) between a clamping line (K2 ) an upper apron roller (4.2) and a lower apron cylinder (4.1) at the entrance of the guide device and a clamping line (K3) of a pair of output rollers (5) by pivoting the guide table (24), the guide table (24) having an inlet area (31) and an outlet area (32) for a strap (21), characterized in that the holder (33) of the guide table (24) each have a pivot axis (D), and the pivot axis (D) above the side of the guide table ( 24), on which the lower apron (21) can be guided, is preferably arranged at a distance (H) from the guide table (24) which is greater than 10 mm. Pivoting device according to the preceding claim, characterized in that the pivoting axis (D) when the guide device is installed as intended in the running direction of the sliver (6) at a distance (L) in front of the inlet area (31) of the guide table (24), preferably more than 10 mm is arranged in front of the inlet area (31). Pivoting device according to one or more of the preceding claims, characterized in that the guide table (24) or the holder (33) interacts with an, in particular exchangeable, table support (37) in order to fix the position of the guide table (24). Pivoting device according to one or more of the preceding claims, characterized in that the table support (37) has several steps or a wedge surface or an eccentric (38) in order to make the inclination of the guide table (24) steplessly or steplessly adjustable. Pivoting device according to one or more of the preceding claims, characterized in that the table support (37) is a part of a set of several interchangeable table supports (37, 37 ', 37 ") with different stops for the guide table (24) to different predetermined inclinations of the guide table (24) to be able to adjust. Pivoting device according to one or more of the preceding claims, characterized in that the guide table (24) is attached to the table support (37) with a magnet (41).

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