EP3061855A1 - Roller card and method for fixing at least one fibre web - Google Patents

Abstract

The invention relates to a carding machine with an inlet side (1a), fed into the fiber flakes by means of a feeder, dissolved and aligned by a system of rollers to single fiber, and an outlet side (1 b) with at least one take-off unit as at least one batt ( 20) is removed for further processing. The invention is characterized in that the carding machine (1) has means for hydrodynamically consolidating the at least one fibrous web (20). Furthermore, the invention has a method for consolidating at least one batt in a carding machine.

Description

The invention relates to a carding machine and a method for solidifying at least one batt.

On carding machines, fiber flakes are dissolved down to the individual fiber. The nonwoven fabric made therefrom generally consists of fibers oriented in a particular direction, e.g. can be specified by the machine direction (Machine Direction = MD). These webs have a high strength in the longitudinal direction, but in the transverse direction (Cross Direction = CD) is low. The longitudinal orientation of the fibers can be counteracted by, for example, influencing the gap between the spool and the worker rolls, or by upsetting the web exiting the spool. However, an upsetting process increases the basis weight of the web produced and thus reduces the production speed of the plant, since the length of the fiber web produced decreases.

Furthermore, it is known to produce random fiber webs whose strength is almost equal in all directions. In this case, the required randomness is not a constant size, but depends strongly on the required further properties of the product, which are used for example as hygiene articles, insulation material, filters or the like.

Depending on the individual case, a fiber orientation that is precisely matched to the final product is required today. The fiber orientation can be generated throughout the fiber web, or only in selected areas. The reoriented batt has much better mechanical properties for the end product in terms of strength and elongation. The ratio of longitudinal and transverse isotropy of MD / CD = 1 is very balanced. However, since different isotropic ratios are required for certain product requirements, the basis weight of the fibrous web also changes with the fiber orientation which is set in the area of the carding. The adjustment of the fiber orientation on the carding is done today by manual adjustment of the relevant components, e.g. Pickups, edging rolls or random rolls, just to name a few. The transport of the batt from the card to another machine via several conveyor belts, between which band separation points are. Due to the transition from one to the next conveyor belt, a tension distortion is generated at the belt separation point for safe transfer, as a result of which the proportion of transversely oriented fibers in the process material is reduced so significantly that a serious loss of quality occurs.

It is an object of the invention to provide a carding machine and a method for solidifying at least one batt in a carding machine, with which the previous disadvantages can be avoided.

The invention solves the problem by the teachings of claim 1 and 17; Further advantageous features of the invention are characterized by the subclaims.

According to the technical teaching of claim 1, the carding machine comprises an inlet side, are fed into the fiber flakes by means of a feeder, dissolved and aligned by a system of rollers to the single fiber, and an outlet side with at least one take-off unit is removed as at least one batt for further processing.

The invention is characterized in that the carding machine has means for hydrodynamically solidifying the at least one batt. Thus, the at least one batt is solidified without changing the orientation and orientation of the fibers. The batt obtains greater strength and stability for its further transport through the processing line, allowing further processing of the batt at a faster rate of production and better quality.

With the features of the invention, it is possible not only to freeze or strengthen the fiber orientation, but also to adjust the production quantity or production speed with respect to nonwoven band length and weight to subsequent production equipment. This makes it possible to change the settings of the Kempelanlage quickly during production, without the subsequent production facilities are affected, since the fiber orientation does not change.

In an advantageous embodiment, the hydrodynamic consolidation means comprise at least one nozzle bar which injects a multiplicity of water jets onto the fiber web. The nozzle bar can be easily integrated as a compact component in the carding machine and can realize a high energy density in a small space, which would require a larger space requirement with a mechanical hardening device.

In order to remove the water from the water jets at least one downstream of the drum in the transport direction roller is formed as besaugte roller. This can be for example a compression roll or a doffer roll.

Vorzugseise the batt is solidified on an evacuated compression roll through the nozzle bar.

In a first embodiment of the invention, the evacuated roll on its periphery on a set, which is suitable to pass water jets to the evacuated roll through or dissipate. This embodiment may be combined with any subsequent alternative embodiment. For this purpose, the clothing in Garniturfuß have recesses which correspond at least partially with openings in the evacuated roll. Alternatively, the clothing which is wound on the roll over a plurality of turns can be wound up at a distance from one another so that an open space or gap remains between each turn, through which the water can be discharged into an opening of the roll.

Preferably, the nozzle bars are operated at a low pressure of 5 bar to 40 bar.

In an alternative embodiment, the withdrawal unit is designed as a suction drum, wherein the batt is solidified on the suction drum. Alternatively, several layers of batt on the suction drum can be connected to each other, at the same time a solidification of the batt occurs. Furthermore, the connection of several layers of batt is compared with a consolidation.

As an alternative to the suction drum, it is also possible for one or more conveyor belts to be formed as a take-off unit, on which the pile pile on the one hand solidifies, but on the other hand also several layers of pile pile can be connected to one another.

In a further embodiment, a so-called Spunlaz drum can be integrated into the carding machine, whereby a greater suction power of a larger amount of water can be realized.

In this case, two or more layers of batt on the suction drum or Spunlaz drum can be brought together and solidified with each other.

In a further advantageous embodiment, the suction drum interacts with a compacting device.

The method according to the invention for consolidating a batt in a carding machine comprises the steps of feeding fiber flakes on an inlet side by means of a feeder, of dissolving and aligning the fiber flocks through a system of rollers to a single fiber, and of having a discharge side with at least one withdrawal unit the generated at least one batt is removed for further processing.

The inventive method is characterized in that the at least one batt is solidified hydrodynamically within the carding. In contrast to the prior art, in which the fibers are entangled and intertwined with each other, there is a compaction or solidification of the batt, in which the orientation of the individual fibers is maintained.

In an advantageous embodiment, the hydrodynamic solidification by means of a plurality of water jets, which are injected onto the Faserflor.

Figur 1:

eine erfindungsgemäße Krempelanlage;

Figur 2:

eine Detailansicht einer alternativen Ausführung der Krempelanlage;

Figur 3:

ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Krempelanlage;

Figur 4:

ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Krempelanlage;

Figur 5:

ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Krempelanlage

Figur 6:

eine Detailansicht einer Kompaktiervorrichtung auf einer Saugtrommel;

Figur 7:

eine erfindungsgemäße Garnitur einer Stauchwalze;

Figur 8:

einen Teilschnitt durch eine besaugte Walze, die als Stauchwalze oder Abnehmerwalze ausgebildet sein kann;

Figur 9:

eine alternative Montage einer Garnitur.

The invention will be explained in more detail with reference to a possible schematically illustrated embodiment. It shows:

FIG. 1:

a carding machine according to the invention;

FIG. 2:

a detailed view of an alternative embodiment of the carding machine;

FIG. 3:

a further embodiment of a carding machine according to the invention;

FIG. 4:

a further embodiment of a carding machine according to the invention;

FIG. 5:

a further embodiment of a carding machine according to the invention

FIG. 6:

a detailed view of a compacting device on a suction drum;

FIG. 7:

an inventive set of a compression roll;

FIG. 8:

a partial section through an evacuated roll, which may be formed as a compression roll or doffer roll;

FIG. 9:

an alternative assembly of a clothing.

In FIG. 1 a carding machine 1 according to the invention is shown in a first embodiment, which has an inlet side 1 a for fiber flakes and one or more outlet sides 1 b for 20 Faserflor. In front of the inlet side 1a of the carding machine 1, an unillustrated feeder is arranged, for example, a Rüttelschachtspeiser with which the fiber flakes are deposited on a conveyor belt, not shown. The conveyor belt For example, it is equipped with a radiometric or optical measuring device or a belt scale, which measures the fiber layer deposited on the conveyor belt and feeds the data to a controller. Within the controller, the weight data are compared with the processing speed of the carding machine 1, so that the carding machine produces a uniform batt 20 at approximately constant speed. As an alternative to the Rüttelschachtspeiser the carding machine 1 can also be equipped with a card feeder with integrated web thickness measurement, in which the weight is determined by the web thickness measurement.

In the carding machine 1, the fiber flakes are fed to the inlet side 1 a of the system and passed over feed rollers 2, 3 pre-drum 3 and transfer unit 4 to the drum 5, so that the fiber flakes are dissolved and aligned to the individual fiber. During the transport process of the fiber flakes keep turning and worker rolls 6, 7, the fibers on the pre-drum 3 and on the spool 5, so that a fibrous web 20 forms, which is transported to the spool 5 from the doffer roller 8 in the direction of outlet side 1 b , In this embodiment, the spool 5 rotates clockwise and passes the generated batt 20 to an upper and a lower counter-rotating doffer roller 8. Thus, the batt 20 can be transferred from the spool 5 to the doffer rollers 8, is between spool 5 and doffer rollers 8 set a very small gap. Furthermore, the surface of the doffer rollers 8 is designed so that between the roller surface and the fibers to be transferred a positive connection can occur. The take-up rolls 8 are followed by one or more upsetting rolls 9, 9 ', and a take-off unit in the form of a circulating conveyor belt 10, 11, which may optionally be equipped with one or more transfer rolls 12.

The carding machine 1 has a plurality of highly dynamic actuators for the fiber orientation, which may be, for example, as servo drives or linear drives of the pickup roller 8, the upsetting rollers 9, 9 ', and / or the random rollers, with which the distances of these rollers 8, 9, 9 'to each other and their differential speeds are regulated. Furthermore, serve as an actuator servo drive or a linear actuator, with the size of the carding nip is set on the drum 5.

By, for example, a lower peripheral speed of a compression roller 9 to the take-off roller 8 of the batt 20 is compressed and thereby reoriented the fibers in the transverse direction. However, the upsetting of the batt 20 has the consequence that subsequently increases the desired basis weight of the batt 20, whereby the batt 20 is denser and thus a lower production length is generated. As a result, the production speed of the following system also decreases. In order to compensate for this disadvantageous effect, the amount of fiber flocks fed in can be reduced by means of the actuator basis weight in front of the carding machine 1, whereby a thinner layer of fiber flocks is conveyed onto the conveyor belt, which, however, is conducted faster to the carding machine 1, so that the controlled variable basis weight again approximates the reference variable basis weight.

The same effect is achieved in that the gap between the doffer roller 8 and the compression roller 9 is reduced. This also leads to an increased reorientation of the fibers in the transverse direction, which increases the basis weight of the batt 20 and thus reduces the production length. In both cases, the MD / CD ratio becomes larger. A multi-stage compression of the batt 20 has the advantage that the MD / CD ratio can be set very accurately, with the greatest influence on the fiber orientation by the Difference speed between the doffer roller 8 and the first compression roller 9 is formed. The differential speed between the first and second upsetting rolls 9, 9 'refines the desired result.

According to the invention, it is provided, via one of the following in the transport direction of the drum 5 taker, which may be formed as a belt or roller, so for example the doffer roll 8 or on one of the compression rollers 9, 9 ', a nozzle bar 16 to be arranged, which has a plurality of nozzle openings from each of which a jet of water 17 hits the batt 20 with high pressure. The fibers of the batt 20 are in this embodiment on the compression roll 9 'solidified together, so that the batt 20 has further strength during further transport with almost constant fiber orientation. In order to remove the water of the nozzle bar 16, the compression roller is designed as a sucked compression roller 9 ', which is set by a pump, not shown under negative pressure and discharges the water. Since the main rollers and the spool 5 of the carding machine 1 are equipped with a circumferential set with a plurality of teeth for aligning the fibers, the sprayed from the nozzle bar 16 roller 8, 9, 9 'must be designed so that on the one hand, the water is discharged and not transported with the batt on the other hand, does not reduce the productivity of the carding machine.

According to the state of the art, the trimmings 30 are wound on the drums in an endless long band, similar to a saw blade, in a spiral and close juxtaposition so that no gap remains between the adjoining clothing feet 31. It may be advantageous to arrange in Garniturfuß 31 a plurality of recesses 32 whose longitudinal axis or orientation is arranged parallel to the side edge of the teeth 33 and whose longitudinal axis is directed at the wound set 30 on the axis of the roller 8, 9, 9 ' ,

In this embodiment, the clothing 30 is wound with the Garniturfuß 31 on the circumference of the suctioned compression roll 9 ', so that the teeth 33 are on the outer side or on the outer circumference of the compression roll 9'. Due to the spiral winding a Garniturfuß 31 are close to each other or the trimmings are spaced from each other, the recesses 32 act as holes through which the water of the nozzle beam 16 is discharged through the compression roller 9 '. The details will be in the FIGS. 7 to 9 described.

The upsetting roll 9 'soaked in this example has an open, i.e. permeable structure, which may be partially covered by the wound-up clothing 30. The open structure of the suction roll 9 can be produced by a perforated surface or by incorporated recessed channels. Furthermore, the sucked suction roller 9 is provided in the region of an end face with an exhaust, which generates a negative pressure and sucks the water of the nozzle beam.

Another difference with this prior art embodiment is that the solidification of the fibers takes place on or between the teeth 14 of the trimmings 30. In the prior art, the solidification of fibers takes place on a perforated transport base, for example a conveyor belt or a perforated drum, which has a structured or smooth and at least partially planar surface. The fibers are partially flushed into the holes and swirl or devour there together. At the same time, the water from the nozzle bars is sucked out through the holes. According to the prior art, the nozzle bars are operated at a pressure in the range of 60 to 400 bar. In the invention, the fibers are pressed onto and between the teeth 33 of the trimmings 30. The loose composite of fibers is more compressed than swirled together so that the orientation or orientation of the fibers remains substantially the same. It is therefore worked with much lower pressures, which may be up to 40 bar depending on the fiber quality, otherwise the teeth 33 of the clothing 30 would perforate the batt 20. In this embodiment, therefore, significantly lower pressures and water quantities are used than in the prior art. Furthermore, the sucked through rollers 8, 9, 9 'have a much smaller diameter than a suction drum in a conventional hydrodynamic solidification plant, which means a high challenge for the removal of the water.

In the FIG. 1 Carding machine 1 shown is equipped with a lower and an upper take-off unit, which are designed as conveyor belts 10, 11, and thus can produce two separate layers Faserflor 20. It is of course also possible to equip the carding machine 1 with only one deduction unit.

The nozzle bar 16 has a plurality of nozzles with a diameter of 0.5 to 1.5 mm, which can be covered or switched off from the respective end faces of the nozzle bar, when the working width is reduced, in order to save energy. The number of nozzles may be in the range of 1 to 30 per cm working width, preferably 5 to 20 nozzles per cm working width, the nozzles need not be arranged in a line, but also offset from one another, for example, in several rows can be arranged side by side. The arrangement of the nozzles is as close to the batt 20 as possible to maintain the beam intensity and the energy applied thereto and to prevent back splash of water from the surface of the squeegee roller 9.

Advantageously, two or three nozzle bars 16 can also be arranged behind one another on the doffer roller 8 or a compression roller 9, 9 '. be arranged, whereby a very gentle for the fiber orientation solidification takes place in stages, since then increase the hydraulic pressures from the first to the last nozzle bar 16.

In the embodiment of FIG. 2 the two conveyor belts 10, 11 have been replaced by a suction drum 15, which serves as collecting drum for the lower batt and the upper batt. In contrast to the prior art in which a hydrodynamic consolidation takes place after a carding machine, here the suction drum 15 is an integral part of the carding machine 1. Accordingly, the batt 20 experiences no delay through the transfer of a to the next conveyor belt, but comes easily solidified from the carding machine 1. In this embodiment, the batt 20 is transported on the suction drum 15 in the clockwise direction, with the lower batt then laying under the upper batt and both are solidified together by the nozzle bar 16 by means of water jets 17. About the suction drum 15, the water of the nozzle beam 16 is removed or sucked. The advantage lies in the fact that the suction drum 15 serves as collecting drum for several layers of fiber web 20, so that the merged fiber web 20 is solidified together at one point and only then leaves the carding machine 1.

In contrast to the embodiment 1, the suction drum 15 is provided with a rounded (flat) surface having a plurality of holes or holes through which the water of the nozzle beam 16 can be removed. Since here too a turbulence or entanglement of the fibers is dispensed with to maintain the fiber orientation is also driven with a low pressure of up to 40 bar, with a higher amount of water is possible because the suction drum 15 has a larger diameter with a due to Holes has a more open structure, as the suctioned compression roller 9 '. In this embodiment, the distance of the nozzles of the Nozzle bar 16 from the batt up to 5 cm. The suction drum 15 may also be formed as a so-called spunlace drum.

Of course, the embodiment 1 can be combined with all subsequent embodiments in which both a tambour 5 downstream roller 8, 9, 9 'with a nozzle bar 16 together and simultaneously the suction drum 15 is provided as a withdrawal unit with a nozzle bar 16 to the two layers of fleece to connect or compact.

Since in the first embodiment, the batt is easily solidified, in the following embodiments of the Figures 2 and 3 several layers of fiber pile are joined together, a combination is also useful here.

The embodiment of FIG. 3 corresponds substantially to the embodiment of FIG. 2 , wherein the suction drum has been replaced by two conveyor belts 10, 11. The lower layer of fiber web 20 is deposited by the transfer roller 12 on the lower conveyor belt 11. The upper layer of batt 20 is deposited by the transfer roller 12 on the upper conveyor belt 10 and further from there to the conveyor belt 11 and connected by hydrodynamic consolidation with the lower batt. The nozzle bar 16 is arranged in this embodiment, after the transfer point of the conveyor belts 10, 11, to connect both layers Fibrous together. In addition, it can be provided to arrange in each case an additional nozzle bar in the region of the take-off rolls 8 or the upsetting rolls 9, 9 'in order to solidify there already the batt. This has the advantage that the fiber orientation which is set between the spool 5 and the doffer rollers 8 is "frozen" there so that the carding can be operated at a higher speed due to the stabilization of the batt.

In FIG. 4 rotates the spool 5 in the counterclockwise direction and passes the batt on the doffer roller 8, which reoriented the fibers and upsetting the batt due to the different peripheral speed or stretched. Further upsetting or stretching of the batt results between the doffer roller 8 and the compression roller 9, which then passes the batt on a suction drum 13, which may be formed as Spunlacetrommel. The batt is easily solidified on the suction drum by a nozzle bar by means of water jets, so that the batt can be further processed at a higher speed due to its greater strength. Also in this embodiment, the batt is solidified at a low pressure, for example at 5 to 40 bar and slightly compacted. Since the alignment of the fibers takes place to a major part between the spool 5 and the doffer roll 8, it is most appropriate that the solidification takes place directly after or on the doffer roll 8, as shown in FIG FIG. 5 is shown. The embodiment according to FIG. 4 has the advantage that there is an increased distance between the spool 5 and the nozzle bar 16, in which the splashing water does not affect the carding process, especially in the case of very light nonwovens. For the determination of the fiber orientation, it is optimal if the solidification of the batt immediately after the transfer from the spool 5 to the doffer roller 8 takes place, as in FIG. 5 is shown. Because in FIG. 5 the compression roller 9 is missing and thus results in a different direction of travel for the batt on the suction drum 13, the batt is acted upon from below with water jets 17.

The embodiments of the FIGS. 4 and 5 can be supplemented with a so-called compacting device 14, which in FIG. 6 is shown enlarged. Also it is possible to additionally the To carry out doffer roll 8 or compression roll 9 as besaugte roll and provided with a nozzle bar 16.

In FIG. 6 shows the suction drum 13 in an enlarged sectional view. The suction drum 13 may be formed as a so-called sieve drum, comprising a perforated metal drum, which is covered with a supporting fabric and a fine sieve or alternatively with a microporous shell. Alternatively, the suction drum 13 may be formed as a structure drum, the surface of which has a perforation to give the batt 20 a structure or a pattern.

The suction drum 13 has a plurality of bores 13 a, via which the water of the nozzle bar 16 is discharged. Within the suction drum 13, a suction pipe with a plurality of suction slots is arranged, via which the water is sucked with negative pressure. Above the suction drum 13 of the nozzle bar 16 is arranged, which injects a series of water jets 17 on the Faserflor 20 under high pressure by means of a plurality of nozzles. The nozzle bar 16 is operated according to the invention with a low pressure of 1 to 40 bar, preferably at a pressure of 5 to 20 bar. The nozzle bar 16 may be operated with one or more rows of water jets 17. The fibrous web 20 runs in this embodiment in the direction of arrow from left to right on the suction drum 13 and is continuously hit by the water jets 17. The nozzle bar 16 is arranged to be adjustable at a distance from the suction drum 13.

Preferably, in the running direction of the batt 20 in front of the water bar 16, a compacting device 14 is arranged, which exerts a pressure on the batt 20 along the longitudinal axis of the suction drum. The compacting device 14 may be rotatably mounted on a support, not shown, with a hinge on a support.

The Kompaktierblech 14 is in FIG. 6 recognizable in side view. In its longitudinal extent or over the working width of the Kompaktierblech 14 extends substantially over the entire length of the suction drum 13. The Kompaktierblech 14 has a front edge 14a, which presses the Fibor 20 on the suction drum 13 under bias.

The contact pressure of the edge 14a and its position on the fiber web 20 can be adjusted via the suspension of the Kompaktierbleches 14. The Kompaktierblech 14 may for example be made of a strip of metal or plastic and slightly bent with pressure and thus resiliently press on the batt 20. The free end or the edge 14a of the compacting device 14 points in the running direction of the fiber web 20.

The technical effect of the compacting device 14 is that the batt 20 is compacted in a very small space before the solidification by the water bar 16 takes place. It is therefore no compacting according to the prior art with rollers or belts needed. Another advantage is that the compaction creates a densification of the fibers just before solidification by the water jets, which prevents blurring of the individual fibers, which ultimately leads to a better nonwoven product.

Essential for the invention of this embodiment, the compaction is to be placed close to the water jet 17, ie at a distance of 1 to 20 mm, thereby preventing the batt 20 in larger areas in front of the row of water jets 16 and by the negative pressure in Suction tube is sucked into the suction drum 13 in the production direction and the batt is destroyed. With the compacting device 14 in the embodiment as a bent sheet, however, can be due to the Kompaktierwirkung shortly before solidification the water jets increase the strength in the longitudinal direction of the fibrous web, since the edge 14a only slides over the surface of the fibrous web 20. By contrast, no change in the orientation of the fibers takes place over the entire cross section of the fibrous web 20.

The bores 13a in the suction drum have an inlet region 13b, which is arranged in the running direction of the fibrous web 20 in front of the water jet 17. The inlet region 13b is wedge-shaped, so that the suction force increases only slowly due to the negative pressure in the bore 13a and the unconsolidated fiber web 20 slowly compresses without displacement of the fibers by suction.

In this embodiment, the edge 14a of the compacting device is arranged close to the water jet 17 and at least partially conceals the inlet region 13b. Thus, the batt 20 is pressed by the compacting device 14 along the longitudinal axis of the suction drum 13 on this. Only the fibers, which are arranged in the region of the bore 13a and the inlet region 13b, are entangled with each other. Only small areas of the batt 20, which are located in the region of the inlet region 13b, are temporarily drawn into the bore 13a by the negative pressure of the suction.

The set 30 used for the doffer or compression roll 8, 9 is in the embodiments of the FIGS. 7 to 10 described. FIG. 7 shows a first embodiment of a clothing 30, in which a plurality of teeth 33 are arranged on a Garniturfuß 31 in a row. The clothing 30 is formed as an endless wire, which is mounted with the Garniturfuß 31 on the surface of the picking or compression roll 8, 9. Above the Garniturfuß 31, the teeth 33 extend, wherein the toothed feet 35 merges into the Garniturfuß 31. The Garniturfuß 31 is formed wider than the teeth 33 so that between the teeth 33 on the one hand place for the alignment of the Fibers, on the other hand, but also sufficient space for the discharge of the water jets 17. For this purpose, the Garniturfuß 31 a plurality of recesses 32, which are rectangular in this embodiment and correspond with holes in the pickup or compression roll 8, 9.

An exemplary arrangement of three drawn rows of a clothing 30 on a doffer roller 8 shows FIG. 8 , The doffer roller 8 has a plurality of bores 8a, which are formed in this embodiment as elongated holes. The recesses 32 in the Garniturfuß 31 are incorporated so generously that even with a staggered assembly of the set 30 always a sufficient opening in the doffer roller 8 remains, with the water of the nozzle beam 16 can be sucked. Ideally, the recesses 32 in the set 30 are always congruent with the holes 8a in the doffer roller 8. However, this requires a very high precision in the production of the holes 8a in the doffer roller 8 and in the recesses 32 in Garniturfuß 31. Since the clothing wire is wound for several minutes on the roller, add to the end of the clothing wire smallest tolerances to large deviations, which at the end of the winding process, the recesses 32 can not be congruent with the holes 8a. In addition, there is an inaccuracy in the assembly of the set 30. A cheaper variant is therefore disclosed in this embodiment, in which from the beginning an overlap of the recess 32 with the openings 8a is planned. Of course, this embodiment may also be provided for a compression roller 9.

FIG. 9 shows an alternative set, in which the recesses 32 are at least partially circular or semicircular. In this embodiment, a clothing 30 is three times by one Doffer roller 8 has been wound. The Garniturfuß 31 has a plurality of recesses 32 which have been incorporated at regular intervals as a semicircle in the Garniturfuß 31. Corresponding to the recesses 32 8 circular holes 8a are arranged in the doffer roller. In order to obtain a sufficient degree of opening, at the same time not to make the Garniturfuß 31 too expensive, the set 30 is laid simultaneously with a mounting wire that produces a predetermined distance from the next set of clothing or Garniturfuß. After a possible intermediate attachment of the clothing 30, for example, every 10 revolutions by means of a solder joint on the doffer roller 8, the mounting wire can be removed and are the other half of a previously hidden hole 8a free. According to this principle, the assembly of a set 30 with a normally dimensioned Garniturfuß 31 without recess is possible. Thus, a standard set can be used, which only has a greater distance to each other on each revolution on the roller.

reference numeral

1

roller card

1a

inlet side

1b

outlet side

2

feed roller

3

preturret

4

transmission unit

5

drummer

6

Wenderwalze

7

workers roll

8th

doffer

8a

drilling

9

edging roll

9 '

sucked compression roller

10

conveyor belt

11

conveyor belt

12

Transfer roll

13

suction drum

13a

drilling

13b

intake area

14

compactor

14a

edge

15

suction drum

16

nozzle beam

17

waterjet

20

batt

30

set

31

Garniturfuß

32

recess

33

tooth

34

addendum

35

tooth root

36

mounting wires

Claims (23)

Carding machine with an inlet side (1 a), fed into the fiber flakes by means of a feeder, dissolved and aligned by a system of rollers to single fiber, and an outlet side (1b) with at least one take-off aggregate as at least one batt (20) to the other Processing is transported away, characterized in that the carding machine (1) comprises means for hydrodynamically solidifying the at least one batt (20). Carding machine according to claim 1, characterized in that the means for hydrodynamic hardening comprises at least one nozzle bar (16) which injects a plurality of water jets (17) onto the fiber web (20). Carding machine according to claim 1, characterized in that the carding machine (1) has at least one spool (5) and at least one doffer roller (8). Carding machine according to claim 3, characterized in that after the at least one doffer roll (8) at least one compression roll (9) is arranged. Carding machine according to one of the preceding claims, characterized in that the at least one doffer roller (8) or compression roller (9, 9 ') is designed as a suctioned roller. Carding machine according to claim 5, characterized in that the fiber web (20) on the evacuated roll (8, 9, 9 ') is solidified. Carding machine according to one of the preceding claims, characterized in that the evacuated roll (8, 9, 9 ') has on its circumference a clothing (30) which is suitable for ejecting water jets (17) to the drawn roll (8, 9, 9'). ) through. Carding machine according to claim 7, characterized in that the clothing (30) in the fitting foot (31) has recesses (32) which correspond to openings in the evacuated roll (8, 9, 9 '). A carding machine according to claim 7, characterized in that the clothing (30) is wound on the evacuated roll (8, 9, 9 ') with a multiplicity of turns, a distance being left between each turn between which the water jets (17) flow away or can be sucked off. Carding machine according to one of the preceding claims, characterized in that the nozzle bar (16) is operated at a pressure of 5 bar to 40 bar. Carding machine according to claim 1 to 4, characterized in that the withdrawal unit is designed as a suction drum (15), wherein the Faserflor (20) between the suction drum (15) and the nozzle bar (16) is solidified. A carding machine according to claim 11, characterized in that two or more layers of fiber web are combined on the suction drum (15) and solidified with one another. Carding machine according to claim 1 to 4, characterized in that the withdrawal unit as at least one conveyor belt (10 or 11) is formed. Carding machine according to claim 13, characterized in that the withdrawal unit as at least two conveyor belts (10, 11) is formed, on which two or more layers Felt be merged and solidified with each other. Carding machine according to one of claims 1 to 8, characterized in that the withdrawal unit is designed as a suction drum (13), which is designed as a sieve drum, Spunlacetrommel or structure drum. Carding machine according to claim 15, characterized in that the suction drum (13) cooperates with a compacting device (14). A method for consolidating a batt in a carding machine, wherein fiber flakes are fed on an inlet side (1 a) by means of a feeder, dissolved and aligned by a system of rollers to the single fiber, and via an outlet side (1b) with at least one take-off aggregate as at least a fibrous web (20) is transported away for further processing, characterized in that the at least one fibrous web (20) within the carding machine (1) is hydrodynamically solidified. A method according to claim 17, characterized in that the hydrodynamic solidification by means of a plurality of water jets (17), which are sprayed onto the at least one Faserflor (20). A method according to claim 18, characterized in that the at least one Faserflor (20) on an evacuated roll (8, 9, 9 ') or drum (13, 15), which is arranged in the transport direction after a spool (5) is solidified , A method according to claim 19, characterized in that on the suction drum (15) two or more layers Fibrous (20) are brought together and solidified with each other. A method according to claim 17, characterized in that the at least one fibrous web (20) on at least one conveyor belt (10 or 11) is solidified. A method according to claim 19, characterized in that the at least one Faserflor (20) on a suction drum (13) is solidified, which is designed as a sieve drum, Spunlacetrommel or structure drum. A method according to claim 22, characterized in that the batt (20) is compacted prior to the hydrodynamic consolidation.

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