HK1010222B - Device at a card for textile fibres, e.g., cotton, chemical fibres or the like, from flat rods equiped with card clothing - Google Patents

Description

Device at a textile fibre carding machine consisting of flat bars provided with card clothing

The invention relates to a device for carding textile fibres, such as cotton, chemical fibres, etc., having a revolving flat consisting of flat bars (Deckelstaeben) provided with clothing, wherein a distance is provided between the tips of the flat clothing and the tips of the cylinder clothing, and wherein the flat bars slide by their two ends on convexly curved sliding guides, which are formed by a flexible component mounted on the convex side of the associated flexible arch.

In the known device, the distance between the convex outer surface of the slide guide on the one hand and the concave inner surface of the slide guide and on the other hand the outer surface of the flexible dome is equal in the circumferential direction. The convex outer surface of the slide guide, the concave inner surface of the slide guide and the outer surface of the flexible dome are arranged concentrically with respect to the cylinder axis of the carding machine. The flexible arch has a recess, for example a groove, in which the slide guide of the cover bar is fixedly supported. In order to change the distance between the tips of the clothing of the flat and the cylinder clothing, for example due to an increase in the number of cotton knots and/or a shortening of the fibers in the carding bars, the position of the flexible arches is changed by means of a plurality of adjusting screws, at the same time as the position of the sliding guides is changed, so that the position of the flat bars with the flat clothing is changed by means of the flat head ends and the distance between the clothing is changed in the same way. Such readjustment of the flexible arch is cumbersome. Furthermore, the geometry of the flexible arch depends on the number of adjustment screws. The lateral carding machine components, such as the drive, suction and flat bars, must be disassembled and reassembled in the parked state. This means a heavy assembly effort. In addition to this, the continuous production of the carding machine is interrupted by the need to stop the machine.

The object of the present invention is therefore to create a device of the type mentioned in the introduction which avoids the disadvantages mentioned above and which makes it possible in particular to vary the carding intensity in a simple manner during continuous operation.

This object is achieved by the features stated in the characterizing portion of claim 1.

The measures according to the invention are implemented in a successful manner in that the combing strength can be varied in a simple manner in response to changes in technical parameters, such as the number of neps and/or the damage profile of the fibres. Another significant advantage is that after the displacement of the sliding guide has been completed, a uniform circumferential distance between the clothing of the cover plate and the clothing of the cylinder is maintained in all places, so that the fibre sliver produced is significantly improved. The position of the convex outer surface of the slide guide is movable in the radial direction. The flexibility (elasticity) of the slide guide ensures that the slide guide can adapt to the arc shape of the outer surface of the slide guide, thereby ensuring the uniformity of all distances along the circumference between the flat clothing and the cylinder clothing. Another advantage is that the movement can be performed continuously, for example, during operation. This can be done automatically or "push (button)" without inertia, thus avoiding the time-consuming assembly work and the production interruptions of each time. It is also particularly advantageous if the convex outer surface of the slide guide, on which the closure bar rests, is displaced radially on both sides of the machine concentrically with respect to the cylinder circumference (cylinder outer surface). In this way, it is achieved that the bearing points of the head end of the cover plate are continuously adjusted steplessly.

It is expedient to provide that the distance between the convex outer surface of the slide guide and the concave inner surface of the slide guide decreases or increases in the circumferential direction and that the distance between the bearing surface of the flexible dome and the axis of the cylinder increases or decreases accordingly, so that the sum of the two distances is constant at all points along the circumference. According to a further advantageous embodiment, in which the distance between the outer face of the convex arc of the slide guide and the inner face of the concave slide guide is constant, a sandwich layer is provided between the slide guide and the flexible dome bearing surface, the distance between the outer face of the sandwich layer convex and the inner face of the sandwich layer concave decreases or increases in the circumferential direction, and the distance between the flexible dome bearing surface and the axis of the cylinder increases or decreases accordingly, so that the sum of the two distances is constant at all points along the circumference. Preferably, there is a layer between the slide guide and the flexible arch support surface, and the distance between the convex outer surface of the slide guide and the concave inner surface of the slide guide decreases or increases in the circumferential direction, and the distance between the convex outer surface of the layer and the axis of the cylinder increases or decreases accordingly, so that the sum of the two distances is constant at all points along the circumference. In a further preferred embodiment, the distance between the convex outer surface of the slide guide in the form of a circular arc and the concave inner surface of the slide guide is constant, two intermediate layers being provided between the slide guide and the flexible dome bearing surface, and the distance between the convex outer surface of the first intermediate layer and the concave inner surface of the first intermediate layer decreasing or increasing in the circumferential direction, and the distance between the convex outer surface of the second intermediate layer and the axis of the cylinder increasing or decreasing in each case, so that the sum of these two distances is constant at all points along the circumference. It is desirable that the sliding guide and/or the flexible arch is movable, e.g. slidable, in the circumferential direction, so that the convex outer surface of the sliding guide is locally movable concentrically in the radial direction. The sliding guide is moved in an arc in the circumferential direction, so that the sliding guide has a section that is resistant to bending. For sliding the cover bar, the sliding guide is made of a material with sliding properties, while at the same time it facilitates in an advantageous manner the sliding of the sliding guide on the relevant oppositely situated bearing surfaces.

Preferably, the sandwich and/or the flexible arch is movable in the circumferential direction, for example slidable, so that the convex outer surface of the slide guide is locally movable concentrically in the radial direction. Advantageously, the sliding guide and/or the sandwich layer are/is displaceable, for example slidable, in the circumferential direction, so that the convex outer surface of the sliding guide is locally displaceable concentrically in the radial direction. Preferably, the two layers are circumferentially displaceable, for example slidable, so that the convex outer surface of the slide guide is radially displaceable concentrically in part. It is desirable that the two wedge-shaped elements are always sliding against each other during displacement, for example during sliding. The sliding guide preferably has the shape of an arc wedge. It is advantageous if one or both of the interlayers have the shape of an arcuate wedge. Preferably one or both of the interlayers are comprised of a flexible member. It is desirable that one or both of the interlayers are metal strips, such as steel strips. Preferably, the distance between the convex outer surface of the slide guide and the concave inner surface of the slide guide decreases or increases uniformly. Advantageously, the convex outer surface of the sliding guide is concentrically displaceable relative to the outer surface of the cylinder. Preferably the convex outer surface of the slide guide is rounded. It is desirable that the concave inner surface of the slide guide abuts against the outer surface of the flexible arch. When the flexible arch in the device has a recess, for example a groove, for the slide guide, it is preferable for the concave inner surface of the slide guide to rest against the convex groove bottom. Advantageously, the concave inner surface of the slide guide abuts against the convex outer surface of the sandwich. The concave inner surface of the sandwich preferably rests against the convex groove bottom surface. It is desirable that the concave inner surface of the first sandwich abuts the convex outer surface of the second sandwich. One or both of the interlayers are preferably mounted in the tank. Advantageously the sliding guide means extends beyond the outer surface of the flexible dome. The displacement mechanism preferably acts substantially centrally on the slide guide. It is desirable for the sliding guide and/or one or both of the interlayers to be composed of a plastic part. The plastic part preferably has a low coefficient of friction. Advantageously the plastic is reinforced, for example by glass fibres, carbon fibres or the like. The sliding guide and/or one or both of the interlayers are preferably made of a flexible metal strip, such as a steel strip. It is desirable for the sliding guide to be guided laterally (to the side of the groove) within the groove. The sliding guide is preferably movable in the height direction in the groove. Advantageously, the sliding guide is displaceable in the groove in the circumferential direction. The shape of the interlayer is preferably produced by machining, such as grinding or the like. It is desirable that the shape of the concave inner surface of the slide guide is caused by machining such as grinding or the like. The shape of the bearing surface of the flexible dome and/or the shape of the groove bottom surface is preferably produced by machining, for example grinding or the like. Preferably, a displacement mechanism is provided for the partial displacement of the sliding guide and/or one or both of the clamping layers and/or the flexible arches. It is advantageous to provide the displacement mechanism with a drive, for example a motor. The displacement mechanism preferably has an adjustment member such as a lever, rack, pinion, rotary hinge, or the like. It is desirable that the displacement mechanism acts substantially centrally on the slide guide and/or one or both of the interlayers. Preferably, a transmission element is provided between the slide guide and/or one or both of the intermediate layers and the drive. It is advantageous if the sliding guide and/or the ends of one or both of the sandwich layers are fixed to a winding drum or the like which can be driven in rotation. The sliding guide and/or one or both of the intermediate layers are preferably designed as endless belts which are wound around at least two deflection rollers. It is expedient to drive at least one deflection roller, for example by means of a motor. The sliding guide and/or one or both of the intermediate layers are preferably at least partially toothed on the outside of the flexible arch, which cooperate with at least one gear. Advantageously, the sliding guide cooperates with at least one strip-shaped element, which essentially has the shape of an arc-shaped wedge. The slide guide and the belt are preferably movable in the circumferential direction. The drive means, for example a motor, provided for moving the sliding guide and/or the sandwich and/or the flexible arch is expediently connected to an electronic control and regulation device, for example a microcomputer. The measuring element for detecting the length of the fibre is preferably connected to an electronic control and regulator. It is advantageous to connect the measuring element for detecting the nep count to an electronic control and regulator. The measuring element for detecting the distance between the tip of the clothing of the cover plate and the tip of the clothing of the cylinder is preferably connected to an electronic control and regulation device. It is desirable for the switching element of the drive device for moving, for example, a slide, to be actuated in connection with the electronic control and regulation.

The invention is explained in more detail below with the aid of examples which are shown in the figures.

Wherein:

FIG. 1 is a schematic side view of a carding machine for use in the apparatus according to the invention;

FIG. 2 shows the distance between the card wire and the cylinder wire and the card bar and slide guide and flexible arch parts;

FIG. 3 schematically illustrates a flexible arch and a movable sliding guide;

FIG. 4 schematically illustrates a flexible arch and sliding guide and movable mezzanine;

FIG. 5 schematically illustrates a flexible arch and movable slide guide and movable mezzanine;

FIG. 6 schematically illustrates a flexible arch and two movable sandwiches;

FIG. 7a is a partial cutaway view of the flexible arch and channel and a partially installed slide guide;

FIG. 7b is a section through the structure according to FIG. 7 a;

FIG. 8a is a partial cutaway view of the flexible arch and channel, the interlayer being installed in the channel, and the slide guide being partially installed;

FIG. 8b is a section through the structure according to FIG. 8 a;

FIG. 9a is a side view of the flexible arch and the revolving deck with the slide guide in a first position;

FIG. 9b is the side view according to FIG. 9a with the slide guide in a second position;

FIG. 10 a movement mechanism of the slide guide;

FIG. 11 shows a sliding guide with two winding rollers at both ends;

FIG. 12 is a slide guide designed as a continuous loop belt;

FIG. 13 is a sliding guide with a spring-loaded device at one end;

FIG. 14 is a block diagram of an electronic control and adjustment device to which at least one nep sensor, a fiber length sensor and an adjustment mechanism, such as a motor, for moving the sliding guide are connected; and

fig. 15 is a side view of the end region of the cover bar with the cover head end, the sliding guide on the flexible arch and the cylinder part.

Fig. 1 shows a carding machine, for example Truetzschler exatcard DK 803, with a feed roller 1, a feed plate 2, licker-in rollers 3a, 3b, 3c, a cylinder 4, a track nip 5, a stripping roller 6, nip rollers 7, 8, a web conductor 9, a web collecting bell 10, feed-out rollers 11, 12, a revolving flat 13 with a flat bar 14, a can 15 and a coiler 16. The direction of rotation of the roller is indicated by the curved arrow. The center (axis) of the cylinder 4 is denoted by M.

According to fig. 2, on each side of the carding machine, a flexible arch 17 with screws 18 (see fig. 7a) is fixed on the side of the frame, the flexible arch having a plurality of adjusting screws 19 (see fig. 7a, 10). The flexible arch 17 has a convex outer surface 17a and an underside 17 b. Above the flexible arch 17 there is a sliding guide 20 made of a slip-able plastic material, which has a convex outer surface 20a and a concave inner surface 20 b. The concave inner surface 20b abuts the convex outer surface 17a and can slide over this outer surface in the direction of arrow A, B. The cover rod 14 has at its two ends a cover head end 14a, on which two steel pins 14b are fixed in the axial direction, which slide on the convex outer surface 20a of the slide guide 20 in the direction of the arrow C. A flat clothing 14d is attached to the bottom of the holder 14 c. The tip circle of the clothing 14d is denoted by 21. The cylinder 4 has a cylinder clothing 4a, for example a sawtooth clothing, on its circumference. The tip circle of the cylinder clothing 4a is denoted by 22. The distance between the tip circle 21 and the tip circle 22 is denoted by a and is, for example, 0.20 mm. The distance between the convex outer surface 20a and the tip circle 22 is denoted by b. Radius r of convex outer surface 20a₁The radius of the tip circle 22 is denoted by r₂And (4) showing. Radius r₁And r₂Intersecting at the center M of the cylinder 4 (see fig. 1).

Fig. 3 schematically shows the flexible arch 17 and the movable sliding guide 20. The distance c between the convex outer surface 20a and the concave inner surface 20B is in the circumferential direction (seen in direction B) from c₁Is reduced to c₂And the distance d between the convex outer surface 17a and the axis M of the cylinder 4 is measured in the circumferential direction (seen in the direction B) from d₁Increase to d₂So that the two distances c₁、d₁Or c₂、d₂The sum is constant at all points along the circumference. The wedge 1 is constituted by a sliding guide 20 and the wedge 2 is constituted by a flexible arch 17. The concave inner surface 20b and the convex outer surface 17a are in sliding contact with each other. The center of the convex outer surface 20a coincides with the center of the cylinder 4. The concave inner surface 20b and the convex outer surface 17a are centered outside the center M of the cylinder 4.

According to the method shown in figure 4,between the concave inner surface 20b of the slide guide 20 and the convex outer surface 17a of the flexible arch 17 is a sandwiched layer 23 which is movable in the direction of arrow D, E. The distance between the convex outer surface 20a and the concave inner surface 20b is constant. The distance e between the convex outer surface 23a of the sandwich 23 and the concave inner surface 23b of the sandwich 23 decreases in the circumferential direction (seen in direction D) from e1 to e₂The distance f between the convex outer surface 17a and the axis M of the cylinder 4 is correspondingly from f₁Increase to f₂So the sum of the distances e and f is constant along the circumference. The centers of the convex outer surface 20a and the concave inner surface 20b coincide with the center M of the cylinder 4. The concave inner surface 23b and the convex outer surface 17a are centered outside the center M of the cylinder 4. The wedge 1 is formed by an interlayer 23 and the wedge 2 is formed by a flexible arch 17. The concave inner surface 20b and the convex outer surface 23a on the one hand, and the concave inner surface 23b and the convex outer surface 17a on the other hand, are in sliding contact with each other.

According to fig. 5, an interlayer 23 is provided between the concave inner surface 20b and the convex outer surface 17 a. Slide guide 20 may be moved in direction A, B and mezzanine 23 may be moved in direction D, E. The distance g between the convex outer surface 20a and the concave inner surface 20b is measured circumferentially (seen in direction a) from g₁Reduced to g₂The distance h between the convex outer surface 23a and the axis M of the cylinder 4 is correspondingly from h₁Increase to h₂The sum of these two distances g and h is constant at all points along the circumference. The center of the convex outer surface 20a and the center of the convex outer surface 17a coincide with the center M of the cylinder 4. The center of the concave inner surface 20b and the center of the convex outer surface 23a are located outside the center M. The wedge 1 is formed by the slide guide 20 and the wedge 2 is formed by the sandwich 23. The concave inner surface 20b and the convex outer surface 23a are in sliding contact with each other.

According to fig. 6, there are two intermediate layers 23 and 24 between the concave inner surface of the sliding guide 20 and the convex outer surface 17a of the flexible arch 17. The distance between the convex outer surface 20a and the concave inner surface 20b is constant. The mezzanine 23 can move in the direction of arrow D, E and the mezzanine 24 can move in the direction of arrow F, G. The distance i between the convex outer surface 23a and the concave inner surface 23b of the first sandwich 23 is in the circumferential direction (seen in direction D) from i₁Increase to i₂And the distance k between the convex outer surface 24a of the second interlayer 24 and the axis M of the cylinder 4 is correspondingly from k₁Decrease to k₂The sum of these two distances c and k is constant at all points along the circumference. The centers of the convex outer surface 20a, the concave inner surface 20b, and the convex outer surface 17a coincide with the center M of the cylinder 4. The concave inner surface 23b and the convex outer surface 24a are centered outside the center M of the cylinder 4. The wedge 1 is constituted by a first interlayer 23 and the wedge 2 is constituted by a second interlayer 24. The concave inner surface 23b and the convex outer surface 24a are in sliding contact with each other.

According to fig. 7a, a circumferential groove 25 is provided in the flexible arch 17. The sliding guide 20, which is made of flexible (elastic) slidable plastic, is according to fig. 7b mounted in the groove 25, in which case one part is located in the groove 25 and the other part is raised above the convex outer surface 17 a. Slide guide 20 is movable within the channel in the direction of arrow A, B as concave inner surface 20b slides along channel floor 25 a. The side faces 25b and 25c constitute side guides of the slide guide 20. The function of this structure is identical to that of fig. 3, for example.

According to fig. 8a, a movable layer 23 is provided between the concave inner surface 20b and the groove bottom 25a inside the groove 25, see fig. 8 b. The function of this structure is identical to that of fig. 4, for example.

In fig. 9a and 9b the sliding guide 20 is shown moving on the flexible arch 17 in the direction of arrow a. By this movement, for example, approximately 50mm, the distance b between the cover tip 14c and the cylinder clothing 4a, i.e. the distance b between the tooth tip circles 21 and 22, is set from b₁(FIG. 9a) increase of e.g. 0.3mm to b₂(FIG. 9b) for example 0.5 mm. The apron bar 13 is moved slowly in the direction C between the apron deflecting rollers 13a and 13b by a drive belt (not shown), then deflected and then brought back to the opposite side. By r₃The radius r of the convex outer surface 17a of the flexible arch 17₄The radius of the concave inner surface 20b of the slide guide is shown. The deck turning rollers 13a, 13b rotate in the directions of arrows H and I.

According to fig. 10, a transmission element 26 is provided on the sliding guide 20, which is connected to the toothed rack 27a, a toothed wheel 27b which can be rotated in the direction O, P being in engagement with the toothed rack 27a and being driven by a drive 40, for example a reversible motor, so that the sliding guide 20 can be moved in the direction of the arrow A, B.

According to fig. 11, the two ends of the sliding guide 20 are wound around the driven winding rollers 28, 29, which are in the direction of the curved arrow K, L or N₁、N₂Is rotated. Thereby moving slide guide 20 in direction A, B. Reversible drive motors are indicated by 42 and 43.

According to fig. 12, the sliding guide 20 is designed as a continuous endless belt which circulates around the rollers 27, 30, 31, 32, 33. Drive 27, such as a roller with a motor, may rotate in the direction of arrow O, P, and thus slide guide 20 may move in the direction of arrow A, B. A reversible motor is indicated at 44.

According to fig. 13, the sliding guide 20 is fixed at one end to a fixed support 35 by means of a tension spring 34. A pulling force in the direction R is exerted on the slide guide 20 by the driven flap deflection roller 13 b. Between the sliding guide 20 and the flexible arch 17 there is a sandwich 23 which can be moved in the direction of the arrow D, E (see fig. 5).

According to fig. 14, there is an electronic control and regulation device 36, for example a microcomputer, to which a measuring element 37 for automatically detecting the number of neps, for example a TruetzschlerNEPCONTROL NCT, a measuring element 38 for detecting the fibre length, and a regulating mechanism 39, for example a drive motor 40, are connected. The measured fiber length value, determined for example by a fiber length camera, can also be fed to the electronic control and regulating unit 36 via an input device. Switching elements, such as key pads or the like, can also be connected to the electronic control and regulation device 36, by means of which the motor 40 is actuated. Furthermore, a measuring element 41 is provided for detecting the distance a between the tooth tips 21 of the cover clothing 13d and the tooth tips 22 of the cylinder clothing 4 a. For example, Truetzschler FLATCONTROL FCT, may also be connected to the electronic control and regulator 36.

When the slide guide 20 is moved from the position according to fig. 9a in the direction of arrow aWhen moved to the position according to fig. 9b, the convex outer surface 20a is moved upwards in the direction of the arrow U, at the same time as the cover bar with the cover heads 14a, 14b (only 14b is shown in the figure) is moved upwards in the direction of the arrow T, so that the distance (b) between the cover heads 14a, 14b and the tips of the cylinder clothing 4a is from b₁Increase to b₂. Therefore, the distance (a) between the tooth tips of the cover clothing 14d and the cylinder clothing 4a is simultaneously set from a₁Increase to a₂. If, on the other hand, the closure bar 14 is moved downwards in the direction S, the distance a is from a₂Reduced to a₁。

Claims (54)

1. Apparatus on a carding machine for textile fibres, consisting of a flat bar provided with a clothing, wherein there is a distance between the tips of the teeth of the flat clothing and the tips of the teeth of the cylinder clothing, the flat bar sliding by its two ends on convexly curved sliding guides, the latter consisting of a flexible member mounted on the convex face of an associated flexible arch, characterised in that: the sliding guide (20) can be displaced in the radial direction (r) by means of an adjusting device₁) The movement is such that the distance (a) between the tooth tips (21, 22) of the cover card clothing (14d) and the cylinder card clothing (4a) is kept uniform at all points of the circumferenceThe consistency is achieved; the adjusting device has a first component and a second component, the distance between the convex outer surface of the first component and the concave inner surface of the first component is reduced or increased along the circumferential direction, and the distance between the convex bearing surface of the second component and the axis (M) of the cylinder (4) is correspondingly increased or reduced, so that the sum of the two distances is constant at all points along the circumference.

2. The apparatus of claim 1, wherein: the first component of the adjusting device is a sliding guide device (20), the second component is a flexible arch (17), and the distance (c) between the convex outer surface (20a) of the sliding guide device (20) and the concave inner surface (20b) of the sliding guide device (20)₁、c₂) Decreases or increases in the circumferential direction, and the distance (d) between the convex bearing surfaces (17a, 25a) of the flexible arch (17) and the axis (M) of the cylinder (4)₁、d₂) And correspondingly increased or decreased, so that the sum of the two distances (c, d) is constant at all points along the circumference.

3. The apparatus of claim 1, wherein: the distance between the convex outer surface of the slide guide and the concave inner surface of the slide guide is constant, an interlayer (23) is arranged between the concave inner surface (20b) of the slide guide (20) and the bearing surfaces (17a, 25a) of the flexible arch (17), the first component of the adjusting device is the interlayer (23), the second component is the flexible arch (17), and the distance (e) between the convex outer surface (23a) of the interlayer (23) and the concave inner surface (23b) of the interlayer (23)₁、e₂) Decreases or increases in the circumferential direction, and the distance (f) between the convex bearing surfaces (17a, 25a) of the flexible arch (17) and the axis (M) of the cylinder (4)₁、f₂) And correspondingly increased or decreased so that the sum of the two distances (e, f) is constant at all points along the circumference.

4. The apparatus of claim 1, wherein: between the sliding guide (20) and the support surfaces (17a, 25a) of the flexible arch (17) is a layer (23), the first component of the adjustment device being the sliding guide (20) and the second component being the sliding guide (20)The distance (g) between the convex outer surface (20a) and the concave inner surface (20b) of the slide guide is the distance (g) of the interlayer (23)₁、g₂) Decreases or increases in the circumferential direction, and the distance (h) between the convex outer surface (23a) of the sandwich (23) and the axis (M) of the cylinder (4)₁、h₂) And correspondingly increased or decreased so that the sum of these two distances is constant at all points along the circumference.

5. The apparatus of claim 1, wherein: the distance between the convex outer surface of the slide guide in the shape of a circular arc and the concave inner surface of the slide guide is constant, two interlayers (23, 24) are provided between the concave inner surface (20b) of the slide guide (20) and the bearing surfaces (17a, 25a) of the flexible arch (17), the first member of the adjustment device is a first interlayer (23), the second member is a second interlayer (24), and the distance (i) between the convex outer surface (23a) and the concave inner surface (23b) of the first interlayer (23) is constant₁、i₂) Decreases or increases in the circumferential direction, and the distance (k) between the convex outer surface (24a) of the second sandwich layer (24) and the axis (M) of the cylinder (4)₁、k₂) And correspondingly increased or decreased so that the sum of these two distances is constant at all points along the circumference.

6. The apparatus of any one of claims 1 to 5, wherein: the sliding guide (20) and/or the flexible arch (17) are/is movable in the circumferential direction, so that the convex outer surface (20a) of the sliding guide (20) can be moved in the radial direction (r)₁) Moving locally concentrically.

7. The apparatus of any one of claims 1 to 6, wherein: the clamping layers (23, 24) and/or the flexible arches (17) are movable in the circumferential direction, so that the convex outer surface (20a) of the sliding guide (20) can be moved in the radial direction (r)₁) Moving locally concentrically.

8. The apparatus of any one of claims 1 to 7, wherein: sliding guide device (2)0) And/or the sandwich layers (23, 24) are movable in the circumferential direction, so that the convex outer surface (20a) of the sliding guide (20) can be moved in the radial direction (r)₁) Moving locally concentrically.

9. The apparatus of any one of claims 1 to 8, wherein: the two clamping layers (23, 24) are displaceable in the circumferential direction, so that the convex outer surface (20a) of the sliding guide (20) can be displaced in the radial direction (r)₁) Moving locally concentrically.

10. The apparatus of any one of claims 1 to 9, wherein: during the displacement, the two wedge-shaped elements (17, 20, 23, 24) slide against each other.

11. The apparatus of any one of claims 1 to 10, wherein: the slide guide (20) has the shape of an arc wedge.

12. The apparatus of any one of claims 1 to 11, wherein: at least one of the interlayers (23, 24) has the shape of an arc wedge.

13. The apparatus of any one of claims 1 to 12, wherein: at least one of the interlayers (23, 24) is composed of a flexible member.

14. The apparatus of any one of claims 1 to 13, wherein: at least one of the interlayers (23, 24) is a metal tape.

15. The apparatus of any one of claims 1 to 14, wherein: the distance (c) between the convex outer surface (20a) of the slide guide (20) and the concave inner surface (20b) of the slide guide (20) is uniformly reduced or increased.

16. The apparatus of any one of claims 1 to 15, wherein: the convex outer surface (20a) of the slide guide (20) is concentrically movable relative to the outer surface of the cylinder (4).

17. The apparatus of any one of claims 1 to 15, wherein: the convex outer surface (20a) of the slide guide (20) is rounded.

18. The apparatus of any one of claims 1 to 17, wherein: the concave inner surface (26b) of the sliding guide (20) abuts against the outer surface (17a) of the flexible arch (17).

19. The apparatus of any one of claims 1 to 18, wherein the flexible arch has a hollowed-out portion for sliding the guide means, characterized by: the concave inner surface (20b) of the slide guide (20) rests on the convex groove bottom surface (25 a).

20. The apparatus of any one of claims 1 to 19, wherein: the concave inner surface (20b) of the slide guide (20) rests against the convex outer surface (23a) of the sandwich (23).

21. The apparatus of any one of claims 1 to 20, wherein: the concave inner surface (23b) of the sandwich layer (23) rests against the convex groove bottom surface (25 a).

22. The apparatus of any one of claims 1 to 21, wherein: the concave inner surface (23b) of the first sandwich layer (23) abuts against the convex outer surface (24a) of the second sandwich layer (24).

23. The apparatus of any one of claims 1 to 22, wherein: at least one sandwich layer (23, 24) is mounted in the groove (25).

24. The apparatus of any one of claims 1 to 23, wherein: the sliding guide (20) is at least partially raised above the convex outer surface (17a) of the flexible arch (17).

25. The apparatus of any one of claims 1 to 24, wherein: at least one of the interlayers (23, 24) is movable within the groove in a circumferential direction (D, E; F, G).

26. The apparatus of any one of claims 1 to 25, wherein: the sliding guide (20) and/or one or both of the interlayers (23, 24) consist of a plastic part.

27. The apparatus of any one of claims 1 to 26, wherein: such plastic parts have a low coefficient of friction.

28. The apparatus of any one of claims 1 to 27, wherein: the plastic is reinforced with glass fibers, carbon fibers, and the like.

29. The apparatus of any one of claims 1 to 28, wherein: the sliding guide (20) and/or one or both of the interlayers (23, 24) are made of a flexible metal strip.

30. The apparatus of any one of claims 1 to 29, wherein: the slide guide (20) is guided inside the groove (25) on the groove flanks (25b, 25 c).

31. The apparatus of any one of claims 1 to 30, wherein: the slide guide (20) is movable in the height direction in the groove (25).

32. The apparatus of any one of claims 1 to 31, wherein: the slide guide (20) is movable in the circumferential direction (A, B) within the groove (25).

33. The apparatus of any one of claims 1 to 32, wherein: the shape of the sandwich (23, 24) is made by machining.

34. The apparatus of any one of claims 1 to 33, wherein: the shape of the concave inner surface (20b) of the slide guide (20) is formed by machining.

35. The apparatus of any one of claims 1 to 34, wherein: the shape of the convex bearing surface (17a) and/or the groove bottom surface (25a) of the flexible arch (17) is produced by machining.

36. The apparatus of any one of claims 1 to 35, wherein: for the partial displacement of the sliding guide (20) and/or the clamping layers (23, 24) and/or the flexible arches (17), a displacement mechanism (27a, 27b, 40) is provided.

37. The apparatus of any one of claims 1 to 36, wherein: a drive (40) is associated with the displacement mechanism.

38. The apparatus of any one of claims 1 to 37, wherein: the displacement mechanism has an adjustment member including a lever, a rack (27a), a gear (27b), a rotary hinge, and the like.

39. The apparatus of any one of claims 1 to 38, wherein: the displacement mechanism acts substantially centrally on the slide guide (20) and/or the sandwich (23, 24).

40. The apparatus of any one of claims 1 to 39, wherein: a transmission element (26) is arranged between the sliding guide (20) and/or the intermediate layer (23, 24) and the drive.

41. The apparatus of any one of claims 1 to 40, wherein: the ends of the sliding guides (20) and/or the sandwich layers (23, 24) are fixed to winding rollers (28, 29) or the like which can be driven in rotation.

42. The apparatus of any one of claims 1 to 41, wherein: an endless belt of the design of the sliding guide (20) and/or the sandwich (23, 24) is wound around at least two deflection rollers (27, 30, 31, 32, 33).

43. The apparatus of any one of claims 1 to 42, wherein: at least one deflection roller (27) is driven.

44. The apparatus of any one of claims 1 to 43, wherein: the sliding guide (20) and/or the intermediate layer (23, 24) are/is at least partially toothed and cooperate with at least one toothed wheel (27 b).

45. The apparatus of any one of claims 1 to 44, wherein: the sliding guide (20) cooperates with at least one strip (23, 24) which has substantially the shape of an arc wedge.

46. The apparatus of any one of claims 1 to 45, wherein: the drive (40) for moving the sliding guide (20) and/or the clamping layers (23, 24) and/or the flexible arch (17) is connected to an electronic control and regulation device (36).

47. Apparatus according to any one of claims 1 to 46, wherein: a measuring element (38) for detecting the length of the fibre is connected to the electronic control and regulator (36).

48. Apparatus according to any one of claims 1 to 47, wherein: a measuring element (37) for detecting the number of neps is connected to the electronic control and regulator (36).

49. The apparatus of any one of claims 1 to 48, wherein: a measuring element (41) for detecting the distance (a) between the tooth tips (21, 22) of the cover card clothing (14d) and the cylinder clothing (4a) is connected to an electronic control and regulation device (36).

50. Apparatus according to any one of claims 1 to 49, wherein: the switching elements of the actuating drive (40) are connected to an electronic control and regulation device (36).

51. The apparatus of any one of claims 1 to 50, wherein: the input element for the measured fiber length is connected to an electronic control and regulator (36).

52. The apparatus of any one of claims 1 to 51, wherein: the slide guide (20) and the belt (23) are movable in the circumferential direction and in the radial direction.

53. The apparatus of any one of claims 1 to 52, wherein: the slide guide (20) is movable in the radial direction, and the belts (23, 24) are movable in the circumferential direction and in the radial direction.

54. Apparatus according to any one of claims 1 to 53, wherein: there are two wedge-shaped members (17, 20, 23, 24), at least one wedge-shaped member (17, 20, 23, 24) being movable in the circumferential direction, and at least one member (17, 20, 23, 24) being made of a flexible material.