EP3633085B1 - Circular comb for a combing machine - Google Patents

Description

The present invention relates to a circular comb for a combing machine and a combing head with such a circular comb.

Such circular combs are used for combing machines for combing out a submitted fiber mass (cotton, wool, etc.), whereby the submission of the fiber mass can take place in the form of wadding webs wound on sleeves or in the form of individual slivers. The numbers of nips (nips/minute) have increased significantly in recent years, which also brings with it an increase in productivity.

The circular combs used for the combing machine in practice consist of a circular comb carrier, which is provided with a clamping hub with which it is non-rotatably attached to a driven circular comb shaft. On a partial circumference of the circular comb carrier, a clothing carrier is attached, which accommodates the combing clothing that combs out the end of the fiber mass (also called fiber tuft) presented by a nipper unit. In an alternative embodiment, circular comb carriers are used, which are held directly on a driven circular comb shaft.

The requirements for such a circular comb have been increased, e.g. For example, increased precision of the components is required in order to achieve a combing effect that is precisely matched to a fiber material to be combed. These requirements make it necessary to improve the setting options for the circular comb within a combing head. In particular, a precise setting of a distance between the enveloping circle of the combing assembly and the circular comb axis contributes to an improvement in the combing process. With such an adjustment, the distance between the lower nipper plate of the nipper and the enveloping circle of the combing assembly of the circular comb can be adjusted in order to ensure optimum combing. Such adjustability through the use of an arcuate spacer element z. B. in the DE 297 20 656 U1 shown and described. However, an exact adjustment option down to the smallest step sizes is possible with such an arc-shaped item not possible. If, for example, to change the radius of the enveloping circle of the combing of the circular comb, in which DE 297 20 656 U1 If the arcuate spacer element shown is exchanged for another arcuate spacer element with a different thickness, the outer radius of the spacer element projecting in the direction of the carrier changes, while the inner radius of the carrier with which it rests on the spacer element remains constant. As a result, tension can arise between the carrier and the spacer element.

the EP 0 514 319 A1 discloses various designs of a circular comb with spacer elements. As a spacer element according to the disclosure of EP 0 514 319 A1 Wedges are used, the wedges are secured by a stop screw against falling out in the axial direction. A disadvantage of the disclosed embodiment is that the positioning of the wedges by moving the wedges in the axial direction is complex and must therefore be carried out when the circular comb is in the removed state. When loosening the fastening of the circular comb segment, the previously set positioning of the wedges is lost, since the wedges can move freely in the axial direction on the roller body.

Next revealed the EP 2 789 716 A1 a circular comb with a carrier, which is provided with an inner section protruding towards the shaft, which has a depression which is open towards the shaft and extends in the longitudinal direction of the hollow profile, in which a support element is accommodated, which extends on the one hand via a first Support surface on a base of the recess and on the other hand supported on a second support surface on the outer circumference of the shaft. Interchangeable spacer elements are provided between the support element and the base of the depression. This should make it possible to set the radius of the enveloping circle of the combing clothing exactly by simply inserting precise spacer elements between the base body and the support element. The disadvantage, however, is that an adjustment of the distance between the lower nipper plate of the nipper and the enveloping circle of the combing assembly of the circular comb can only be changed step by step depending on the existing spacer elements. In addition, the circular comb is for readjustment to expand the distance from the combing device in order to be able to exchange the spacer elements.

In the patent application EP 3 467 166 A1 , Prior art within the meaning of Article 54(3) EPC, another circular comb for a combing machine is disclosed, in which an adjustment of the distance between the clothing carrier and the circular comb carrier is possible by means of wedges.

The object of the present invention is therefore to create a circular comb which enables continuous adjustment of the distance between the lower nipper plate of the nipper and the enveloping circle of the combing assembly of the circular comb, with the setting being able to be changed without removing the circular comb.

The object is solved by the devices with the features of the independent patent claim.

A circular comb for a combing machine is proposed, the circular comb having a comb clothing and a circular comb axis, with a clothing carrier and at least one circular comb carrier. The clothing carrier is held on the circular comb carrier. At least two adjusting devices are provided between the clothing carrier and the circular comb carrier in a respective end region of the clothing carrier for adjusting a distance between the clothing carrier and the circular comb carrier. Due to the connection of the lower nipper plate of the nipper with the circular comb shaft, the distance between the lower nipper plate of the nipper and the enveloping circle of the comb clothing also changes when the distance between the circular comb carrier and the clothing carrier is adjusted.

The clothing carrier has a clothing support surface on its side facing away from the circular comb shaft. A combing set is attached to the set support surface with suitable means, for example with screws, by welding or gluing. Comb sets consisting of individual wire strips applied to the clothing support surface or also comb sets consisting of prefabricated combing elements which are applied to the clothing support surface are used here. The clothing support surface is arranged in the shape of a segment of a circle around the circular comb axis.

As is known from the prior art, the circular comb carrier can be provided as a disk with a specific length, the length being seen in the direction of the circular comb axis. The length of the circular comb carrier corresponds to only a fraction of the length of the circular comb, with several such short circular comb carriers being used to fasten the comb clothing. The use of several circular comb carriers for a comb clothing has the disadvantage that an alignment of the circular comb carrier is complex in order to achieve a concentric arrangement of the comb clothing or the clothing carrier with respect to the circular comb shaft. The length of the circular comb carrier therefore advantageously corresponds to a length of the circular comb. This has the additional advantage that the circular comb can be preassembled with the combing set before it is installed in a combing machine.

Advantageously, the clothing carrier, viewed in the direction of the circular comb axis, is fastened in its respective end region to the circular comb carrier with at least two detachable connecting elements. Screws have proven their worth as connecting elements. Due to the high demands on the connection of the clothing carrier with the circular comb carrier due to the acceleration forces that occur, a screw connection of the clothing carrier with the circular comb carrier has proven itself after an adjustment.

After loosening the connecting elements for attaching the clothing carrier to the circular comb carrier, the adjustment device can be used to easily adjust the distance between the lower gripper plate and the enveloping circle of the comb clothing located on the clothing carrier without the circular comb having to be removed from the combing head when the setting is changed. A setting can thus also be checked directly in the installed state by measuring the distance between the lower gripper plate and the enveloping circle of the combing clothing located on the clothing carrier. For this purpose, the circular comb can be turned into a measuring position in the installed state, in which the distance can be adjusted and measured. After making the adjustment, it is secured by simply tightening the connecting elements for attaching the clothing carrier to the circular comb carrier.

The distance between the round comb carrier and the clothing carrier can be adjusted in various known ways, for example with adjusting screws or eccentric screws. According to the invention, however, the adjustment device between the clothing carrier and the circular comb carrier comprises flat wedges arranged in an end region of the circular comb, which, starting from the respective end of the clothing carrier in the direction of the longitudinal axis of the circular comb shaft, have a constant cross-sectional reduction directed towards the clothing carrier or the circular comb carrier. As a result of this cross-sectional reduction, the distance between the clothing carrier and the circular comb changes when the flat wedges are shifted in the direction of the circular comb axis.

The constant narrowing of the cross section is provided by a bevel of a surface of the flat wedge facing the clothing carrier, the bevel having a wedge angle α of 6 angular degrees or less. Choosing a wedge angle of less than 6 degrees ensures self-locking of the flat wedge. The flat wedge remains in its position when the connecting elements of the clothing carrier are tightened with the circular comb carrier.

Furthermore, it is advantageous if the respective connecting elements of the clothing carrier reach through an opening provided in the respective flat wedge with the circular comb carrier. This not only fixes the clothing carrier on the circular comb carrier, but at the same time the flat wedge is securely clamped between the clothing carrier on the circular comb carrier at the location of the narrowing of the cross section. Passing the connecting element through the opening in the flat wedge also prevents the flat wedge from slipping out to the side during an adjustment.

Advantageously, a contact surface of the flat wedges facing the circular comb carrier is molded onto a bearing surface provided on the circular comb carrier. By adapting the shape of the circular comb carrier and clothing carrier at the point where they touch, a play-free system of the flat wedge on the surface of the circular comb carrier is achieved. There is also the possibility of training Profiles, for example longitudinal grooves, to obtain a guided displacement of the flat wedges along the circular comb axis.

It is advantageous if the clothing carrier has a mating surface with the same wedge angle α that corresponds to the bevel of the flat wedge. The self-locking of the two inclined surfaces comes into its own when a flat contact is created between the clothing carrier and the flat wedge.

According to the invention, the respective flat wedge is provided with an adjusting screw which engages in a cavity in the clothing carrier, the adjusting screw being arranged with its axis parallel to the circular comb axis. By creating the cavity, the adjusting device can be arranged between the clothing carrier and the circular comb carrier without the clothing carrier itself being significantly weakened. This also has advantages in an aerodynamic behavior of the circular comb during its movement compared to an arrangement of the adjusting device outside of the clothing carrier. Furthermore, the axially parallel arrangement of the adjusting screw makes it possible to adjust the flat wedges on the face side from outside the circular comb. It is not necessary to remove the circular comb or parts of it for an adjustment.

Furthermore, the adjusting screw is preferably held rotatably in its axial position in the clothing carrier and an internal thread is provided in the flat wedge, with the flat wedge being adjustable in its position relative to the clothing carrier in the direction of the circular comb axis by engaging the adjusting screw in the internal thread in the flat wedge by turning the adjusting screw. Since the adjusting screw does not change its axial position due to the axial fixation even when turning, the flat wedge is axially displaced via the thread of the adjusting screw which is in engagement with the internal thread of the flat wedge according to the pitch of the thread in relation to the circular comb axis. Neither the clothing carrier nor the circular comb carrier change their axial position, with the result that the displacement of the flat wedge causes the clothing carrier and the circular comb carrier to be radially driven apart or brought together.

A holding device for the adjusting screw is preferably provided for rotatable holding in the cavity of the clothing carrier. This enables the entire adjustment device to be arranged in the clothing carrier. The holding device is particularly preferably a circlip. Alternatively, a corresponding shaping of the cavity and the adjusting screw can also be provided in order to achieve axial retention of the adjusting screw. The use of a circlip is an easy to assemble and inexpensive construction to keep the adjusting screw in its axial position.

Advantageously, the opening in the flat wedge is designed as a slot open to a side facing away from the end of the clothing carrier. Such a design enables a flat wedge to be easily replaced without completely detaching the clothing carrier from the circular comb carrier. The formation of the slot also prevents the flat wedge from slipping out laterally during an adjustment after the connection elements have been loosened.

The distance between the clothing carrier and the circular comb carrier is advantageously 0 mm to 1.5 mm. It has been shown that the distance can be adjusted in this area by using flat wedges and is also sufficient for the necessary adjustment of the distance between the lower nipper plate of the nipper and the enveloping circle of the combing clothing for the fiber material to be processed in a combing room.

The direction of rotation of the circular comb results in an entry side with which the combing clothing first meets the fiber tuft to be combed. Due to its rotation, the circular comb moves through the tuft until it leaves it again on the outlet side of the combing set. As a rule, the comb clothing is arranged with its enveloping circle concentrically to the circular comb shaft. However, it has been shown that, due to the flow conditions caused by the movement of the circular comb, the distance between the clothing carrier and the circular comb carrier on an inlet side of the combing clothing is advantageously different from the distance between the clothing carrier and the circular comb carrier on an outlet side of the combing set differs by 0.1 mm to 1.5 mm. Due to the possibility of setting the distance differently on the inlet side and the outlet side, the combing processes can be optimally matched to the requirements of the fiber material to be combed.

Furthermore, it is advantageous if the counterweight is held non-rotatably on the circular comb shaft with fastening elements, independently of the circular comb carrier. This makes it possible to replace the circular comb carrier without also having to remove the counterweight from the circular comb shaft. This is particularly advantageous when preassembled circular combs that are set to a specific combing process are used. In this case, once set, kits which include the round comb carrier, the clothing carrier, the adjustment devices and the combing clothing can be exchanged in a simple manner.

A combing head is also proposed with a circular comb and a counterweight or compensating element, the circular comb having a clothing carrier with a clothing support surface and at least one circular comb carrier and the circular comb carrier with the counterweight or compensating element being mutually arranged on a circular comb shaft and the clothing carrier being fastened to the circular comb carrier with connecting elements is, wherein the circular comb is formed according to the above description.

Figur 1

eine schematische Seitenansicht eines Kämmkopfes 1 einer Kämmmaschine nach dem Stand der Technik;

Figur 2

eine schematische Darstellung zweier Ausführungsformen eines erfindungsgemässen Rundkammes in einem Längsschnitt;

Figur 3

eine vergrösserte schematische Darstellung einer Ausführungsform einer erfindungsgemässen Verstelleinrichtung nach der Figur 2;

Figur 4

eine schematische Darstellung der ersten Ausführungsform des Rundkammes in einer Ansicht X nach der Figur 2 und

Figur 5

eine schematische Darstellung der zweiten Ausführungsform des Rundkammes in einer Ansicht Y nach der Figur 2.

Further advantages of the invention are described in the following exemplary embodiments. Show it:

figure 1

a schematic side view of a combing head 1 of a combing machine according to the prior art;

figure 2

a schematic representation of two embodiments of a circular comb according to the invention in a longitudinal section;

figure 3

an enlarged schematic representation of an embodiment of an adjustment device according to the invention figure 2 ;

figure 4

a schematic representation of the first embodiment of the circular comb in a view X after figure 2 and

figure 5

a schematic representation of the second embodiment of the circular comb in a view Y after figure 2 .

figure 1 shows a schematic side view of a combing head 1 of a combing machine according to the prior art. In known combers z. B. eight such combing heads 1 arranged side by side. The combing head 1, of which only some of the elements are shown, has a nipper unit which is mounted in the frame of the combing machine so that it can be swiveled back and forth about the nipper shaft 5 and the circular comb axis 6 via the swivel arms 3 and 4. The tong shaft 5 is driven by a drive, not shown in detail, in order to give the tong unit a reciprocating movement. In the circular comb axis 6, the circular comb shaft 8 is arranged, on which a circular comb 7 is fixed in a rotationally fixed manner. The circular comb shaft 8 with its circular comb axis 6 is also driven continuously or discontinuously in the direction of rotation 23 by a drive (not shown). In the known solution shown, the circular comb 7 fastened below the gripper unit on the circular comb shaft 8 consists of two circular comb carriers 9 which are fixedly spaced apart from one another in the direction of the circular comb axis 6 and are fastened to the circular comb shaft 6, on the outer circumference of which a clothing carrier 10 on the one hand and a counterweight 11 on the other are fastened. As shown schematically, the counterweight 11 is attached by means of the screws 12, by means of which the counterweight 11 is attached to the circular comb carriers 9. The clothing carrier 10 is also firmly connected to the circular comb carriers 9 via connecting elements 24 shown schematically. Above the clothing carrier 10, which, like the counterweight 11, extends over the entire length L (see figure 4 ) of the circular comb 7 extends, a comb set 13 is attached. The circumferential angle of the combing clothing 13 is about 90 degrees in known combing machines and is also referred to as the "combing angle".

The tong unit is formed from a tong frame 14 to which a lower tong plate 15 and an upper tong plate 16 is attached. In the embodiment shown, the tong unit is closed, with the out of the clamping point of the nipper unit protruding tuft 17 is detected and combed out by the combing set 13. The combing out is essentially determined by the distance C between the lower gripper plate 15 and an enveloping circle 2 of the combing clothing 13 . Also in the tong frame 14 a feed roller 18 is rotatably mounted above the lower tong plate 15, which z. B. is driven step by step by a ratchet drive, not shown. A batting 19 (or individual slivers) fed to the combing device 1 is fed to the clamping point of the gripper unit via this feed roller 18 . After the tuft 17 has been combed out, the nipper unit is pivoted in the direction of a subsequent pair of detaching rollers 20 . During this pivoting process, the gripper unit opens and the combed-out end of the wadding 19 or the fiber tuft 17 is placed on the end of a previously formed fiber fleece 21 and soldered to it under the action of the clamping point of the detaching rollers 20 and transported away in the conveying direction 22.

figure 2 shows a schematic representation of two embodiments of a circular comb according to the invention in a longitudinal section. The circular comb is shown with a length L along a circular comb axis 6, the length L corresponding to the extension of a combing device that is normally used. The circular comb axis 6 is at the same time the longitudinal axis of the circular comb shaft 8 on which the circular comb is held non-rotatably by a circular comb carrier 9 or 30 . The clothing carrier 10 has a clothing support surface 44 on a side facing away from the circular comb carrier 9 or 30 . The combing clothing is held on the clothing support surface 44 in the form of individual clothing wires or combing elements (not shown). As shown in the embodiment on the left, however, a shortened length M of the circular comb carrier 9 is also possible since, depending on the design of the combing clothing, a clothing support surface 44 that is continuous over the entire length L is not absolutely necessary. Advantageously, however, the length M of the circular comb carrier 30 corresponds to the length L of the circular comb, as shown in the embodiment on the right. If the circular comb carrier 30 is guided over the entire length L of the circular comb, a configuration of the circular comb carrier 30 as a hollow profile has proven itself in practice.

In the left half of the figure 2 an embodiment of the circular comb is shown, in which the circular comb has a circular comb carrier 9 and a clothing carrier 10 . The circular comb carrier 9 has a length M and is present several times over the length L, namely at the two respective ends of the clothing carrier 10. In the embodiment shown, the circular comb carrier 9 is composed of two half-shells, which are fastened with clamping screws 25 on the circular comb shaft 8 are attached. A spring wedge 45 is used for the non-rotatable mounting of the circular comb carrier 9 on the circular comb shaft 8 . However, other anti-rotation devices, such as dowel pins, are also conceivable. The clothing carrier 10 is attached to the respective circular comb carriers 9 with connecting elements 24 . An adjusting device 27 is inserted in an end region 26 of the clothing carrier 10 between the clothing carrier 10 and the circular comb carrier 9 . The adjusting device 27 serves to set the distance A between the clothing carrier 10 and the circular comb carrier 9. On a side of the circular comb carrier 9 opposite the clothing carrier 10, a counterweight 11 is fastened to the circular comb carrier 9 with screws 12. The counterweight 11 serves to achieve an almost imbalance-free rotation of the circular comb shaft 8 despite the combing set being present on one side. Accordingly, the counterweight 11 has a length corresponding to the clothing carrier 10 .

In the right half of figure 2 an embodiment of the circular comb is shown, in which the circular comb has a circular comb carrier 30 and a clothing carrier 10 . The circular comb support 30 has a length L and extends over the entire length L of the circular comb. In the embodiment shown, the circular comb carrier 30 is designed as a continuous profile over the length L, which is braced with fastening screws 31 on the circular comb shaft 8 . For the non-rotatable mounting of the circular comb carrier 30 on the circular comb shaft 8 , the fastening screws 31 are passed through the circular comb shaft 8 . The clothing carrier 10 is attached to the circular comb carrier 30 with connecting elements 24 . An adjustment device 27 is inserted in an end region 26 of the clothing carrier 10 between the clothing carrier 10 and the circular comb carrier 30 . The adjusting device 27 serves to set the distance A between the clothing carrier 10 and the circular comb carrier 30. On a side of the circular comb shaft opposite the clothing carrier 10 8 , a compensating element 28 is fastened to the round comb shaft 8 with fastening elements 29 . The compensating element 28 serves to achieve an almost imbalance-free rotation of the circular comb shaft 8 despite the combing set being present on one side.

figure 3 shows an enlarged schematic representation of an embodiment of an adjustment device 27 according to the invention figure 2 . The adjusting device 27 is inserted between the clothing carrier 10 and the circular comb carrier 9 and comprises a flat wedge 32 and an adjusting screw 38 . The contact surface 34 of the flat wedge 32 is adapted to the shape of the bearing surface 35 of the round comb carrier 9, so that a play-free combination of the flat wedge 32 and the round comb carrier 9 is made possible.

The flat wedge 32 is L-shaped, with a first leg directed radially from the circular comb carrier 9 against the clothing carrier 10 and a second leg in the direction of the circular comb axis 6 between the circular comb carrier 9 and the clothing carrier 10 engages. The second leg of the flat wedge 32, which engages between the circular comb carrier 9 and the clothing carrier 10, is provided with a bevel 36 on the side facing the clothing carrier 10, so that a cross section of the flat wedge 32 that is effective between the circular comb carrier 9 and the clothing carrier 10, starting from the end 33 of the Clothing carrier 10 tapers steadily in the direction of the circular comb axis 6. Furthermore, a counter-surface 37 of the clothing carrier 10 facing the flat wedge 32 is provided with an inclination corresponding to the cross-sectional narrowing of the flat wedge 32 with a wedge angle α. If the flat wedge 32 is now changed in its axial position in the direction of the circular comb axis 6, the circular comb carrier 9 and the clothing carrier 10 are displaced radially relative to one another, with the result that the distance A between the circular comb carrier 9 and the clothing carrier 10 changes. The position of the flat wedge 32 can be changed to such an extent that the clothing carrier 10 comes to rest on the circular comb carrier 9 and the distance A becomes zero.

Furthermore, the clothing carrier 10 is fastened to the circular comb carrier 9 with the connecting elements 24 . The connecting elements 24 reach through an opening 43 in the flat wedge 32, the opening 43 being designed so large that in every possible position of the flat wedge 32 it is not held directly by the connecting elements 24. By tightening the connecting elements 24, the flat wedge 32 is clamped between the circular comb carrier 9 and the clothing carrier 10 and is thus secured in its current position.

To adjust the axial position of the flat wedge 32, an internal thread 39 arranged axially parallel to the circular comb axis 6 is provided in the first leg of the flat wedge 32, in which an adjusting screw 38 engages, which is also inserted with its axis 42 parallel to the circular comb axis 6. The adjusting screw 38 fits into a cavity 40 provided for this purpose in the clothing carrier 10. A holding device 41 (e.g. a circlip) is provided within the cavity 40 for fixing the adjusting screw 38 in its axial position relative to the clothing carrier 10 and thus also relative to the circular comb carrier 9. When the adjusting screw 38 is rotated, the flat wedge 32 is changed in its axial position relative to the round comb carrier 9 and the clothing carrier 10 due to the axial fixation of the adjusting screw 38 .

figure 4 shows a schematic representation of the first embodiment of the circular comb in a view X according to FIG figure 2 . The circular comb essentially comprises a circular comb carrier 9, a clothing carrier 10 and a comb clothing attached thereto (not shown). The circular comb carrier 9 is formed in two half-shells which are braced against each other with clamping screws 25 on the circular comb shaft 8 . A spring wedge 45 is provided to secure a non-rotatable mounting of the circular comb carrier 9 on the circular comb shaft 8 . The clothing carrier 10 is fastened to the circular comb carrier 9 with connecting elements 24 and has a clothing support surface 44 on the side opposite the circular comb carrier 9 . The clothing support surface 44 is arranged concentrically to the circular comb shaft 8 around a circular comb axis 6 . On a side of the circular comb carrier 9 opposite the clothing carrier 10 , a counterweight 11 is fastened to the circular comb carrier 9 with screws 12 . In addition, between the circular comb carrier 9 and the clothing carrier 10 adjusting devices after figure 3 deployed. The adjusting devices are in the form of flat wedges 32 which designed to interact with adjusting screws 38 (see figure 3 ) and serve to set a distance A between the circular comb carrier 9 and the clothing carrier 10 on an inlet side 46 of the circular comb or a distance B between the circular comb carrier 9 and the clothing carrier 10 on an outlet side 47 of the circular comb. The inlet side 46 is that part of the combing clothing or of the clothing carrier 10 which meets the fiber tuft to be combed first according to the direction of rotation 23 , ie is at the front as seen in the direction of rotation 23 . The combing process can be influenced by setting the distances A and B differently.

figure 5 shows a schematic representation of the second embodiment of the circular comb in a view Y according to FIG figure 2 . The circular comb essentially comprises a circular comb carrier 30, a clothing carrier 10 and a comb clothing attached thereto (not shown). A compensating element 28 is arranged on a side of the circular comb carrier 30 opposite the clothing carrier 10 and is fastened to the circular comb shaft 8 with fastening elements 29 . Through the circular comb shaft 8 , the circular comb carrier 30 is braced with the compensating element 28 on the circular comb shaft 8 by means of fastening screws 31 passing through. The clothing carrier 10 is fastened to the circular comb carrier 30 with connecting elements 24 and has a clothing support surface 44 on the side opposite the circular comb carrier 30 . The clothing support surface 44 is arranged concentrically to the circular comb shaft 8 around a circular comb axis 6 . In addition, between the circular comb carrier 30 and the clothing carrier 10 adjusting devices after figure 3 deployed. The adjusting devices are designed in the form of flat wedges 32 which interact with adjusting screws 38 (see figure 3 ) and serve to set a distance A between the circular comb carrier 9 and the clothing carrier 10 on an inlet side 46 of the circular comb or a distance B between the circular comb carrier 9 and the clothing carrier 10 on an outlet side 47 of the circular comb. The inlet side 46 is that part of the combing clothing or of the clothing carrier 10 which meets the fiber tuft to be combed first according to the direction of rotation 23 , ie is at the front as seen in the direction of rotation 23 . The combing process can be influenced by setting the distances A and B differently.

The present invention is not limited to the illustrated and described embodiments. Modifications, such as a combination of features, even if they are shown and described in different exemplary embodiments, are possible within the scope of the patent claims.

Reference List

1

comb head

2

enveloping circle of the comb clothing

3

swivel arm

4

swivel arm

5

pincer shaft

6

circular comb axis

7

circular comb

8th

round comb shaft

9

round comb carrier

10

set carrier

11

counterweight

12

screws

13

combing set

14

tong frame

15

Lower tong plate

16

Upper tong plate

17

fiber beard

18

food roller

19

cotton

20

pair of detaching rollers

21

conveying direction

22

non-woven fabric

23

Direction of rotation of the circular comb

24

fastener

25

clamping screws

26

End area set carrier

27

adjusting device

28

counterweight

29

fastener

30

round comb carrier

31

mounting screw

32

wedge

33

end of the set carrier

34

contact surface

35

bearing surface

36

bevel

37

counter surface

38

adjusting screw

39

inner thread

40

cavity

41

holding device

42

Axis adjustment screw

43

opening

44

clothing support surface

45

spring wedge

46

Inlet side combed clothing

47

Outlet side combing set

A

Distance between clothing carrier and circular comb carrier on the infeed side

B

Distance between clothing carrier and round comb carrier outlet side

C

Distance between the lower gripper plate and the combing set

L

Length of round comb

M

Length of round comb carrier

a

wedge angle

Claims (12)

1. A circular comb (7) for a combing machine, wherein the circular comb (7) has a comb clothing (13) and a circular comb axis (6), together with a clothing carrier (10) and at least one circular comb carrier (9, 30), wherein the clothing carrier (10) is mounted on the circular comb carrier (9, 30), and wherein at least two adjustment devices (27) for adjusting a distance (A, B) between the clothing carrier (10) and the circular comb carrier (9, 30) are provided between the clothing carrier (10) and the circular comb carrier (9, 30), in a respective end area (26) of the clothing carrier (10), wherein between the clothing carrier (10) and the circular comb carrier (9, 30), the adjustment device (27) includes flat wedges (32) situated in the end area (26) of the clothing carrier (10), which, starting from the respective end (33) of the clothing carrier (10) in the direction of the circular comb axis (6), have a continuous cross-sectional taper directed toward the clothing carrier (10) or the circular comb carrier (9, 30), wherein the continuous cross-sectional taper is provided by a bevel (36) of a surface of the flat wedge (32) facing the clothing carrier (10), characterized in that the bevel (36) has a wedge angle (α) of 6 angular degrees or less and wherein the particular flat wedge (32) is provided with an adjusting screw (38) that engages with a cavity (40) of the clothing carrier (10), wherein the adjusting screw (38) is situated with its axis (42) parallel to the circular comb axis (6)..
2. The circular comb (7) according to claim 1, characterized in that the clothing carrier (10) in its respective end area (26), viewed in the direction of the circular comb axis (6), is fastened to the circular comb carrier (9) via at least two detachable connecting elements (24).
3. The circular comb (7) according to claim 2, characterized in that the respective connecting elements (24) of the clothing carrier (10) extend through an opening (43) provided in the particular flat wedge (32).
4. The circular comb (7) according to one of the preceding claims, characterized in that a contact surface (34) of the flat wedges (32) facing the circular comb carrier (9, 30) is integrally formed on a support surface (35) provided on the circular comb carrier (9, 30).
5. The circular comb (7) according to one of the preceding claims, characterized in that the clothing carrier (9, 30) has a mating surface (37) that corresponds to the bevel (36) of the flat wedge (32) and has the same wedge angle (α).
6. The circular comb (7) according to one of the preceding claims, characterized in that the adjusting screw (38) is mounted in the clothing carrier (10) so as to be rotatable in its axial position, and a female thread (39) is provided in the flat wedge (32), wherein the flat wedge (32) is adjustable in its position relative to the clothing carrier (10) in the direction of the circular comb axis (6) by engagement of the adjusting screw (38) with the female thread (39) in the flat wedge (32) by rotating the adjusting screw (38).
7. The circular comb (7) according to one of the preceding claims, characterized in that a retaining device (41) for the adjusting screw (38) is provided in the cavity (40) of the clothing carrier (10).
8. The circular comb (7) according to claim 7, characterized in that the retaining device (41) is a circlip.
9. The circular comb (7) according to claim 4, characterized in that the opening (43) in the flat wedge (32) is designed as a slot that is open toward a side facing away from the end (33) of the clothing carrier (10).
10. The circular comb (7) according to one of the preceding claims, characterized in that the distance (A, B) between the clothing carrier (10) and the circular comb carrier (9, 30) is 0 mm to 1.5 mm.
11. The circular comb (7) according to one of the preceding claims, characterized in that the distance (A) between the clothing carrier (10) and the circular comb carrier (9, 30) on a feed side (46) of the comb clothing (13) differs from the distance (B) between the clothing carrier (10) and the circular comb carrier (9, 30) on a discharge side (47) of the comb clothing (13) by 0.1 mm to 0.8 mm.
12. A comb head (1) having a circular comb (7) and a counterweight (11) or compensating element (28), wherein the circular comb (7) has a clothing carrier (10) with a clothing support surface (44) and at least one circular comb carrier (9, 30), and the circular comb carrier (9, 30) is oppositely situated from the counterweight (11) or compensating element (28) on a circular comb shaft (8), and the clothing carrier (10) is fastened to the circular comb carrier (9, 30) via connecting elements (24), characterized in that the circular comb (7) is designed according to one of the preceding claims.

Images