EP1055751B1 - Combing machine with several combing heads - Google Patents

Abstract

The combing machine, with a number of combing heads, is followed by an inclined conveyor (2) to carry the band of slivers directly after the final combing head (1). A calender roller (24) is at the lower conveyor deflection roller (22). The upper deflection roller (23) of the inclined conveyor (2) is close to the plane of the take-in rollers of the sliver drawing unit (3). final rollers of the drawing unit (3) are close to and above the funnel (51) of the station (5) to lay the drawn sliver in cans. A common frame (6) supports the drawing unit (3), the sliver laying station (5) with the funnel and paired calender rollers (52) and the spiral coil laying wheel (54), and the upper deflection roller (23) of the inclined conveyor (2), as an integrated compo group. A web funnel (41) is at the final rollers of the drawing unit (3), with a station (4) to form the sliver, with a connecte guide tube for the sliver (93). A twisting jet, with a connected pressure line, opens into the guide tube with a control valve. web funnel (41) swings at the free end of a lever (44), mounted to the frame (6), between a working position (4) and a service position. In the working position (4), the web funnel (41) lies in front of the clamping gap at the exit rollers of the drawing (3) and the outlet opening of the guide tube at the funnel (51) of the sliver laying station (5). In the service position, the w funnel (41) is swung upwards and outwards from the final drawing rollers. Guides (30) are between the upper deflection roller (2 of the inclined conveyor (2) and the leading rollers of the drawing unit (3), to restrict the width of the band of slivers. A central drive is at the frame (6), with gearing stages through toothed or flat belts. The drive also has a transmission link to rotating plate to rotate the sliver can (55). A monitor is at the calender rollers (52) of the sliver laying station (5), to mea the sliver (93) thickness. A separate motor with a control unit drives the final drawing rollers of the drawing unit (3), and th components which are synchronized with them. The upper drawing rollers are loaded by membrane pistons for the required forces on them. The drawing unit (3) is angled downwards to the exit side, towards the funnel (51) of the sliver laying station (5). The u drawing rollers have a play of 0.5-3.0 mm. At least one defining suction channel is over each upper drawing roller, and all the suction channels lead to a common suction zone. An air guide plate is over each suction channel.

Description

The invention relates to a combing machine with several combing heads, with one the drawing unit assigned to the combing heads, with a sliver laying device, which has a rotating hose wheel above a rotating jug for has the storage of sliver, the single head bands of the combing heads fed close to each other as a fiber ribbon share to the drafting system and there a non-woven tape can be stretched and the non-woven tape using a non-woven funnel near the nip of the output rollers of the drafting system to form a sliver summarized and via guide means the funnel of the tubular wheel are fed.

A comber of the type described is known, inter alia, from DE 196 40 855 became known. In this, preferably for combing cotton trained machine will come from the combing heads Single headbands on the so-called table of the comber through guide elements guided, placed side by side and as a sliver share approximately in the Level of the table fed to a drafting system.

The exit rollers of the drafting system lead the stretched nonwoven into one Fleece funnel. The guide tube downstream of the fleece funnel is with a Swirl nozzle equipped in the guide tube in the event of insertion of the sliver can briefly generate a spiral air movement. Which the solidifying tip of the sliver passes through the guide tube between the lower guide roller and another calender roller Steig conveyor.

This calender roller presses the thin sliver onto the surface of the conveyor belt. The upper guide roller of the ascending conveyor belt is with a large diameter. A curved baffle prevents it in the Area of the upper guide roller by the here at very high speed considerable centrifugal force leads to uncontrollable delays. This The sliver should have the baffle plate with its still firm tip leading into the funnel lead, which is part of a sliver laying device. The funnel are in a manner known per se, calender rolls and one driven below it Assigned hose wheel for the spiral sliver storage.

Such an arrangement is particularly useful at higher working speeds the comber has significant defects. The high speed with which the sliver is moved on the ascending conveyor leads in many situations incorrect drawing or uncontrolled running of the sliver. The automatic insertion of the sliver is associated with considerable uncertainties afflicted.

A similar combing machine is shown in DE 41 19 877 A1, which is considered to be the closest prior art. Here, too Single headbands combined into a fiber ribbon share and over one relatively short, upward curved baffle near a little higher laid drafting system. The drafting system or the lower rollers of this The drafting system is arranged and guided in an upward inclined plane the nonwoven tape combined on a baffle plate by guide rollers through to the conveyor belt of an ascending conveyor.

Over the sliver laying device, the sliver is a relatively small Roll down into the calender rolls of a sliver laying device belonging hose wheel guided.

Such a device is also regarding the quality of the sliver produced highly unsatisfactory. Here is trying to the upcoming Problems caused by regulating the drafting system and the thickness to adjust the sliver as precisely as possible.

Several sensors check the current values for the thickness of some of the individual headbands, the sliver and ultimately the stretched sliver. The compensation takes place by changing the feed speed of the Drafting system. Complicated monitoring devices are needed to get the job done to coordinate the combing heads and the drafting system with one another.

There are none at all for automatic insertion of the sliver Requirements.

On routes that only serve the stretching function, it is common to do this Arrange drafting system in a position that is close and laterally above the Sliver laying device is located. Such a device is exemplified in described in DE 16 85 578.

The transfer of such an arrangement to combers with several Comb heads have not yet been identified. It is obviously not there possible. A comber has several, depending on the function, different in height arranged operating areas.

The operating height of the combing heads is on the feed side of the reel the comb heads at about shoulder height. It’s already extremely difficult there manipulate the wraps with considerable weight at this height. The operating height on the output side of the individual headbands, on the other hand, is only at waist height or below.

Because of the extreme sensitivity of these just soldered, one has to single headbands combined every manipulation not absolutely necessary strictly avoided with this fiber ribbon share.

This fiber band share was expected to the maximum, on one slightly upwards inclined plane to be drawn into the drafting system. That way you work at least on the drafting system at normal operating height.

The transport of the stretched sliver, its fibers in the longitudinal direction are now evenly distributed again, upwards, in the area of the sliver laying device has so far not caused any fundamental problems.

The sliver, which is quite stable in itself, was regularly cleaned with an ascending conveyor, as described above, brought to the desired height.

The resulting delays were brought about with increasingly complex control processes under control, even the working speed of the combing heads was included in the control process.

The automatic drawing of the stretched sliver into the nip the calender rolls of the sliver laying device remained despite repeated Try an unsolved problem

The object of the present invention is now to provide a comber with several combing heads, with a drafting device and with a sliver laying device, in which the sliver ultimately produced and to be laid down can be conveyed into the can without errors, even at high working speed, and with simple means also the beginning of a sliver can be guided automatically and with high reliability from the drafting device into the nip of the calender rolls of the sliver laying device into the can.

This object is achieved by the features of claim 1 solved surprisingly simple way.

Conveying the previously compressed and pressed sliver coulter from the table level of the comber in operating height the height of the sliver laying device takes place at a relatively low Speed.

It has been shown that with such a transport process, also with a relatively steep ascent angle of the ascending conveyor, neither the single fiber belts detach from each other, still the still sensitive slivers Default. The sliver can also be removed after transport easily detach from the conveyor belt and then stretch.

The highly sensitive fiber sliver formed after about 20 times warping arises only very close to and above the sliver laying device and can be automatically inserted into the gap of the calender rolls there. It is no longer subject to default due to the now very short path. Control devices with complicated actual value acquisitions and control processes can be reduced to the absolute minimum by this arrangement limit.

In particular by combining the assemblies according to claim 2 the assembly of the entire arrangement is also simplified. On a separate one All assembly units that are effective in a network can be assembled at one assembly location Common support frame assembled and adjusted to each other in a functional manner become.

With the execution according to claim 3, the conditions are created that the front end of the nonwoven belt passes through at the exit of the drafting system the banding unit is automatically combined, formed into a tip and reliably and without any additional manual work into that Tube wheel can be guided.

The storage of the fleece funnel with its guide tube on one to one Bearing of the support frame pivotable pivot - according to claim 4 - allowed easy operation of the arrangement. The fleece tape is swung out Belt forming unit close to the nip of the drafting rollers tore off. The fleece funnel is then brought into the working position, a swirl flow in the guide tube ensures that the nonwoven tape is compressed to the sliver to form a twisted solid band tip and for transporting the tip to between the calender rolls of the sliver laying device.

With the use of the guide elements defined in claim 5 one cares to ensure that the sliver coulter is checked again before it enters the drafting system is compressed laterally.

It has proven to be useful on a common support frame arranged assemblies powered by a common drive drive elements assign and the necessary gear stages consistently as tooth or Form flat belt drives. This makes the noise development clear reduced.

From this central drive, the drive for the Turntable of the jug must be derived.

The modification of the drive according to claim 8 allows a correction of the strip thickness to be deposited by changing the angular velocity of the Output roller pair of the drafting system. With this control arrangement you can compensate for up to 70% of all possible differences. The arrangement of the encoder there are only a few on the calender rolls of the sliver laying device Centimeters from the exit rollers of the drafting system, so that the Most of the necessary corrections can be carried out successfully.

Reduce the modifications to the drafting system according to claims 9 to 11 on the one hand the construction effort. On the other hand, they allow one qualitatively high quality function of the drafting system and at the same time ensure a simple one Operation of the same.

The design of the cleaning device according to claim 12 ensures a permanent cleaning of the drafting system with simple technical means.

Fig. 1

eine schematische Seitenansicht der Führungsanordnung der Faserbandschar zum Streckwerk und des verstreckten Faserbandes von dort bis in die Kanne,

Fig. 2

eine schematische Darstellung der Führung der Einzelkopfbänder und der Bildung der Faserbandschar auf dem Tisch der Kämmmaschine in einer Ansicht von oben,

Fig. 3

einen vereinfachten Querschnitt durch das Streckwerk, durch die obere Führungswalze des Förderbandes, durch die Bandbildungseinheit und die Kalanderwalzen der Faserbandablegevorrichtung,

Fig. 4

eine vereinfachte Ansicht auf die Führungselemente für die Faserbandschar am Eingang des Streckwerkes in Laufrichtung der Faserbandschar betrachtet,

Fig. 5

eine schematische Darstellung der Belastungsanordnung für die Oberwalzen des Streckwerkes,

Fig. 6

einen Querschnitt durch die Reinigungsanordnung für die Oberwalzen des Streckwerkes und

Fig. 7

einen vereinfachten Getriebeplan für die Funktionselemente der beschriebenen Vorrichtung.

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawings,

Fig. 1

2 shows a schematic side view of the guide arrangement of the fiber sliver coulter to the drafting device and the drawn fiber sliver from there to the can,

Fig. 2

1 shows a schematic illustration of the guidance of the individual headbands and the formation of the fiber band share on the table of the comber in a view from above,

Fig. 3

a simplified cross section through the drafting system, through the upper guide roller of the conveyor belt, through the belt forming unit and the calender rollers of the sliver laying device,

Fig. 4

a simplified view of the guide elements for the fiber ribbon share at the entrance of the drafting unit viewed in the running direction of the fiber ribbon share,

Fig. 5

a schematic representation of the load arrangement for the upper rollers of the drafting system,

Fig. 6

a cross section through the cleaning arrangement for the top rollers of the drafting system and

Fig. 7

a simplified transmission plan for the functional elements of the device described.

The invention is described with the aid of a cotton combing machine a variety of combing heads 1 is equipped. On each comb head 1 a so-called single headband 9 is produced and in the plane of the table 11 Band guides 12 around and under pressure laterally to the already laid sliver 91, which in turn is supported on the boundary wall 13, created. The sliver sheet 91 thus formed is in a short, laterally limited flat channel in the plane of the table up to the area of a climbing conveyor 2 led.

The ascending conveyor 2 consists of an endless conveyor belt 21 which is a lower guide roller 22 near the table level and around an upper guide roller 23 is performed approximately at the height of the drafting system 3. The connector 3 is located approximately at the level of the sliver laying device 5, preferably above the calender rolls 52 and laterally not far from the funnel 51, which the hidden sliver 93 between the clamping zone of the Calender roller pair 52 leads.

The endless conveyor belt 21 conveys the fiber ribbon share 91 at an angle of about 45 ° upwards. For better adhesion of the fiber ribbon share 91 on the Conveyor belt 21 provides the calender roll 24, which is near the lower guide roll 22 presses the fiber band share 91 non-positively against the ascending conveyor belt 21.

In the area of the upper guide roller 23 of the conveyor belt 21 the Sliver share 91 over a bow in the middle, slightly deflected downwards Guide element 30 (see FIG. 4) between the input rollers 31 of the drafting unit 3. The guide element 30 ensures that the individual headbands 9 within the fiber ribbon share 91 again uniformly brought, so that in the subsequent delay in the drafting system 3 a the width of uniform non-woven tape 92 is generated.

The fleece belt 92 emerging from the exit rollers 33 of the drafting system 3 is combined into a sliver by a flat fleece funnel 41. In the center of the fleece funnel 41, the guide tube 42 adjoins itself extends to the opening of the funnel 51 of the sliver laying device 5. This guide tube 42 is equipped with a swirl nozzle 43, which has a pressure line 431 is assigned. This swirl nozzle 43 ensures inside the guide tube 42 for a spiral air flow directed towards the funnel 51. This spiral air flow is relative during normal operation weak, but is increased in pulses when a new sliver is introduced must become.

This function becomes even more precise when looking at FIG. 3 in detail explained. The sliver 93 emerging from the bottom of the hopper 51 becomes captured by the calender rolls 52, further compressed and into the tube 541 of the tube wheel 54 of the sliver laying device 5 promoted.

Further details of this arrangement are to be made with reference to FIGS 4 are explained again in detail. The drafting system 3 used here has three roller units, the feed rollers 31, the intermediate rollers 32 and the Output rollers 33. The input rollers 31 consist of the two lower rollers 311 and 312 and the top roller 313. Both bottom rollers 311, 312 are driven at different angular speeds. The top roller 313 presses the fiber ribbon sheet 91 onto the lower rollers 311, 312. A sufficient Large play (0.5 to 3 mm) within the vertical guide ensures one uniform pressing force of the upper roller 313 on both lower rollers 311, 312. These feed rollers 31 are followed by the roller unit of the intermediate rollers 32 Roller unit is designed analogously to the feed rollers 31. It consists of the Bottom rollers 321, 322 and top roller 323.

The end is the pair of output rollers 33, which is driven by the Lower roller 331 and the loaded upper roller 332.

The angular velocity of the intermediate rollers 32 is significantly higher than that Angular velocity of the feed rollers 31. The output rollers 33 provide then for the final delay size and can expediently also for Compensation of the warpage depending on a measured strip thickness be regulated in terms of their angular velocity.

The thin fleece belt 92 emerging from the exit rollers 33 initially has another width that corresponds approximately to the width of the fiber ribbon share 91. This Fleece band 92 is combined by a fleece funnel 41 to form a fiber band 93 and pneumatically guided and conveyed in the guide tube 42.

The operation of the fleece funnel 41, the swirl nozzle 43 and the guide tube 42 is described in detail in German patent application 196 40 855 A1 described.

The guide tube 52 is in the present case with an approximately horizontal Cut surface on the upper opening of the funnel 51. This funnel 51 further compresses the sliver 93 and guides it into the nip of the calender rolls 52nd

These calender rolls 52 can be known per se in their peripheral area Be stepped so that they are also suitable for measuring the Suitable sliver thickness. These calender rolls 52 convey the sliver 93 into the hose tube 541 of the hose wheel 54.

The band forming unit 4, consisting of fleece funnel 41, guide tube 42 and Swirl nozzle 43 with pressure line 431 are on one around the frame fixed bearing 65 pivotable lever 44 from a working position 4 to an operating position 4 ' pivotable. The swivel angle between the two positions is chosen so large that you can freely hand in front of the nip of the output rollers 33 can manipulate the nonwoven web 92.

If you want the sliver 93 into the guide elements up to the can 55 insert automatically, then you tear the fleece tape 92 at the clamping line of the Output roller pair 33 evenly short across the entire width. Is this takes place, the band forming unit 4 is brought into the working position. simultaneously with the start of the drafting system 3 is in the guide tube 42 on the Swirl nozzle 43 produces a circulating air flow of high speed. The resulting negative pressure in the fleece funnel 41 ensures that the Fleece tape 92 summarized into the sliver 93 and in the Guide tube 42 is sucked.

The extremely powerful swirl of this air flow causes the tip of the Sliver 93 is twisted into a stable, wedge-shaped fiber formation, the then also in the funnel 51 through its narrow lower opening into the clamping gap the calender rolls 52 can be guided. At this point everyone is Difficulties for the management of this sliver practically overcome.

The still compressed tip of the fiber sliver 93 also passes over without interference the rapidly rotating hose wheel 54 into the slowly rotating jug 55. The sliver 93 is deposited there spirally in a manner known per se.

As soon as the tip of the sliver 93 has passed through the calender rolls 52, the pressure of the swirl flow can be reduced. The remaining pressure this flow is only so great that the friction of the sliver 93 in Guide tube 42 can be kept low and no misalignment occurs.

The drafting system 3 is in terms of its basic structure and the arrangement of the rollers known per se. It should be noted that the top rollers 313, 323, 332 are transverse to Direction of passage of the fiber ribbon share 91 performed with a sufficiently large game so that the top rollers 313, 323 of the feed rollers 31 and the intermediate rollers with evenly distributed forces on their lower rollers 311, 312, 321, 322 can press.

The loading of the upper rollers 313, 323, 332 is shown in principle in FIG. 5 shown. They act on the two bearings of the top rollers 313, 323, 332 Ram 342, 343, 344. On the widened heads of these plungers 342, 343, 344 is a flat membrane piston 341 on top, which in turn is on top a solid plate of the housing 340 supports.

The pressure in this membrane piston 341 is adjustable and becomes independent of the respective thickness of the sliver 93 evenly on the top rollers 313, 323, 332 transmitted.

6 is another special feature of the drafting arrangement 3 with regard to it Cleaning arrangement shown. Along and above the functional section of the upper rollers 313, 323, 332, suction channels 351, 352, 353 are arranged.

On the running along the surface lines of the top rollers 313, 323, 332 Walls of the suction channels 351, 352, 353 have limited elastic lips, those at a short distance above the top rollers 313, 323, 332 end up. Through the gaps between the lips and the top rollers 313, 323, 332 there is a strong air flow, so that on the top roller 313, 323, 332 adhering fibers immediately, first in the suction space 36 above the suction channels 351, 352, 353 and then from there into the suction line 362.

The suction channels 351, 352, 353 are in their carrier to the upper rollers 313, 323, 332 adjustable so that the respective gap depending on the average thickness of the fiber ribbon share 91 on the respective roller arrangement can adjust.

It has proven to be expedient, above each suction channel 351, 352, 353 air baffles 361 to be arranged upwards and in the direction of the suction line are inclined. In addition to aligning the flow, they prevent relatively large-volume collections of fibers in the following down Suction channel 352, 353 can penetrate.

Due to the compact arrangement of the components of the drafting unit 3, the belt forming unit 4 and the sliver laying device 5, it is possible to essential Parts of these assemblies in a confined space on a support frame 6 to arrange.

The drafting system 3 has its bearing 61 in the upper region of this support frame 6. The upper guide roller has near the input rollers 31 of this drafting system 3 23 of the ascending conveyor 2 their bearing 62. At the exit side of the drafting system 3 has the lever 44 to which the band forming unit 4 is attached Camp 65. This is conveniently located beyond and below the Nip of the calender rolls 52 of the sliver laying device 5.

On the underside of this support frame 6, the hose wheel 54 can also be in stock 64 are performed.

This structural unit designed in this way can be completely pre-assembled on the support frame 6. All necessary settings can already be made in the pre-assembly become. After inserting this support frame 6 you need only install the transmission links leading to a central drive and adjust.

The central drive of this arrangement is described in the present Example derived from the drive of the round comb shaft 7. This round comb shaft 7 is driven by a separate motor 71 and transmits its rotary motion via corresponding gear links to the central drive shaft 72. From this central drive shaft 72, the upper one via toothed belts Guide roller 23 of the ascending conveyor 2 and one lower roller 311, 321, 331 each roller assembly 31, 32, 33 driven.

The same drive is also the calender rolling pair 52 of the sliver laying device 5 forwarded.

The respective second lower rollers 312, 322 of the roller arrangements are opened the opposite side by small toothed belt drives of their respective assigned lower roller driven.

From the drive movement of the calender rolls 52 of the sliver laying device 5 is a bevel gear stage and corresponding tooth and Flat belt also driven the tube wheel 54. Even the drive of the jug 55 for storing the sliver 93 is derived from here. About one Worm or helical gear and a correspondingly long flat belt drive the so-called turntable 56 is driven, on which the can 55 is detachable is put on.

According to an embodiment not shown, this drive can be modified. Thus, the output roller pair 33 of the drafting system 3 can have a separate, controllable servo motor can be assigned, based on the actual values of the Measuring sensor 53 on the calender rolls 52 via a processor unit control pulses received and corrected the delay size. To this regulated drive should also drive the sliver laying device 5 up to the turntable 56 be coupled.

LIST OF REFERENCE NUMBERS

1

combing heads

11

table

12

tape guide

13

boundary wall

2

ascending conveyors

21

Inclined belt conveyor

22

Guide roller, bottom

23

Guide roller, top

24

calender roll

3

drafting system

30

guide element

31

feed rollers

311

bottom rollers

312

bottom roll

313

top roll

32

intermediate rolls

321, 322

bottom roll

323

top roll

33

exit roll

331

bottom roll

332

top roll

34

loading arrangement

340

casing

341

diaphragm piston

342, 343, 344

tappet

35

suction

351,352,353

suction channels

36

suction

361

baffles

362

Suction line

(4)

Band formation unit (working position)

4 '

Band formation unit (operating position)

41

fleece funnel

42

guide tube

43

swirl nozzle

431

pressure line

44

lever

5

Sliver depositing device

51

funnel

52

calender rolls

53

Encoder (strip thickness)

54

Schlauchrad

541

hose pipe

55

pot

56

turntable

6

supporting frame

61

Bearing for drafting system

62

Bearing for top guide roller

63

Bearing for hose wheel

64

Bearing for calender rolls

65

Bearings for lever 43

7

Circular comb roller

71

engine

72

central drive shaft

9

Single headbands

91

Sliver crowd

92

sliver

93

sliver

Claims (12)

1. A comber with several comb heads (1), with a drafting device (3) allocated to all the comb heads (1), with a fibre sliver deposit device (5), which has a rotatable tubular wheel (54) above a rotatable can (55) for storing fibre slivers (93),
   whereby the individual head strips (9) of the comb heads (1) are conducted close to one another as a fibre sliver band (91) from the table plane to the drafting device (3) and is there drafted to form a non-woven fleece material strip (92), and
   whereby the non-woven fleece material strip (92) is compiled by means of non-woven fleece funnels (41) close to the nip gap of the withdrawal rollers (33) of the drafting device (3) to form a fibre sliver (93) and is conducted by guide means to the funnel (51) of the fibre sliver depositing device (5),
   characterised in that
   for the conveying of the fibre sliver band (91), a driven rising conveyor (2) is arranged directly after the last comb head (1) with a calender roll (24), close to a lower guide roller (22),
   the upper guide roller (23) of the rising conveyor (2) is located close to and in the plane of the intake rollers (31) of the drafting device (3), and
   the withdrawal rollers (33) of the drafting device (3) are arranged close to and laterally above the funnel (51) of the fibre sliver depositing device (5).
2. The comber according to Claim 1, characterised in that

   the drafting device (3),

   the fibre sliver depositing device (5), consisting of funnel (51), calendar roll pair (52) and tubular wheel (54), as well as

   the upper guide roller (23) of the rising conveyor (2)

   are grouped together to form one structural unit and are mounted on a common carrier frame (6).
3. The comber according to Claims 1 and 2, characterised in that
   the non-woven fleece funnel (41) of a sliver forming unit (4), allocated to the withdrawal rollers (33) of the drafting device (3), is connected in a known manner to a guide tube (42) for the fibre sliver (93),
   and that a pressure line (431) with a controllable valve opens into the guide tube (42) via a twist nozzle (43).
4. The comber according to Claims 1 to 3, characterised in that
   the non-woven fleece funnel (41) is secured at the free end of a lever (44) which can pivot at the carrier frame (6) between a working position (4) and a serving position (4'),
   in the working position (4), the non-woven fleece funnel (41) lies on the funnel (51) of the fibre sliver depositing device (5), before the nip gap of the withdrawal rollers (33) of the drafting device (3) and the output aperture of the guide tube (42), and in the operating position (4'), the non-woven fleece funnel (41) is pivoted away upwards and outwards around an operating area of the withdrawal rollers (33).
5. The comber according to Claim 1, characterised in that
   guide elements (30) are arranged between the upper guide roller (23) of the rising conveyor (2) and the intake rollers (31) of the drafting device (3), which delimit the width of the fibre sliver band (91).
6. The comber according to Claims 1 and 2, characterised in that
   a central drive unit (71, 72) is allocated to the modules arranged on the common carrier frame (6), and
   that the drive gear stages are designed as toothed gear drives or flat-belt drives.
7. The comber according to Claims 1, 2, and 6, characterised in that
   the drive for the revolving plate (56) for the movement of the can (55) is also derived from the central drive unit (71, 72) in the area of the carrier frame (6).
8. The comber according to Claims 1, 2, and 6, characterised in that
   a measuring transducer (53) for the thickness of the fibre sliver (93) is allocated to the calender rolls (52) of the fibre sliver depositing device (5), and
   that a separate drive motor (71) with a control unit is allocated to the withdrawal rollers (33) of the drafting device (3) and the elements which are to be driven in synchrony with this.
9. The comber according to Claim 1, characterised in that
   the upper rolls (313, 323, 332) of the drafting device are subjected to load by means of a diaphragm piston (341).
10. The comber according to Claim 1, characterised in that
    the drafting device (3) is inclined at an angle downwards towards the output side and in the direction of the funnel (51) of the fibre sliver depositing device (5).
11. The comber according to Claim 1, characterised in that
    the upper rollers (313, 323) of the drafting device (3) are guided in the passage direction of the fibre sliver band (91) with a degree of play of between 0.5 to 3 mm.
12. The comber according to Claim 1, characterised in that
    at least one delimiting suction channel (351, 352, 353) is provided above each upper roll (313, 323, 332) of the drafting device (3),
    all the suction channels (351, 352, 353) of the upper rolls (313, 323, 332) open into a common suction chamber (36), and
    arranged above each suction channel (351, 352, 353) are air baffle plates (361) aligned towards the suction line (362).

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