GB2385606A

GB2385606A - Removing neps and impurities from carding machine

Info

Publication number: GB2385606A
Application number: GB0301258A
Authority: GB
Inventors: Gerd Pferdmenges; Robert Pischel
Original assignee: Truetzschler GmbH and Co KG
Current assignee: Truetzschler GmbH and Co KG
Priority date: 2002-02-20
Filing date: 2003-01-20
Publication date: 2003-08-27
Anticipated expiration: 2023-01-20
Also published as: GB0301258D0; GB2385606B

Abstract

At least two separation modules B1, B2 are mounted in a pre-carding zone B and/or two such modules are mounted in post-carding zone (C, Fig 3), the zones being respectively upstream and downstream of the main carding region around a carding cylinder 4. Each module comprises plural working elements such as a fixed carding element 18a, a suction hood 19a and a pressure element 17a. A module with the sequence of element shown is adapted to remove impurities whereas a module with the sequence of elements reversed (Fig 3) is adapted to remove neps. Modules of both types may be provided in the same zone. Three modules may be provided in each zone. Means for adjusting the radial position of the working elements are described (Figs 4,5).

Description

Apparatus on a carding machine The invention relates to an apparatus on a carding machine, in which there is one or more working modules having a plurality of working elements, for example, fixed carding elements, suction devices, separating blades or the like, arranged lying opposite a roller, for example, a cylinder.

In a known apparatus (DE 38 35 776 Al), the modules are equipped with two or more working elements and are secured to the card plate. A cleaning device in the form of a suction unit is present, upstream of which there is a guide bar and downstream of which there is a blade bar. It is a disadvantage that this apparatus does not allow the composition of the separated impurities (waste composition) to be manipulated nor does it allow neps to be removed.

It is an aim of the invention to produce an apparatus of the kind described in the introduction that avoids or mitigates the said disadvantages and in particular allows the waste composition to be altered or influenced and allows neps to be removed.

The invention provides an apparatus on a carding machine having a roller and, associated with the roller, a pre-carding zone and a post-carding zone, the apparatus comprising at least two separation modules

arranged in the pre-carding zone and/or at least two separation modules arranged in the post-carding zone for the separation of impurities and/or neps, each module being opposed to the roller and comprising a plurality of working elements.

The measures according to the invention enable the separation of troublesome impurities and/or neps to be quite substantially improved. It is a particular advantage that a multi-functional arrangement of the working elements is made possible. That enables them to be adapted in a versatile manner to the fibre material, in order to meet high quality requirements of the product to be manufactured. In addition, particularly in consequence of the modular construction and, in preferred cases, the uniform angular extent, the time required for exchange of worn working elements combined with high precision mounting of the exchanged elements can be substantially reduced.

Advantageously, there are at least two modules in the pre-carding zone. Advantageously, there are at least two modules in the post-carding zone.

Advantageously, at least two modules in the or each said zone comprise at least one module arranged to promote separation of neps and at least one module arranged to promote separation of impurities.

Advantageously, the module for the separation of impurities-viewed in the direction of rotation of the roller-comprises at least one fixed carding element,

a separating element and a pressure element.

Advantageously, the module for the separation of nepsviewed in the direction of rotation of the rollercomprises at least one pressure element, a separating element and a fixed carding element. Advantageously, the separating element comprises a suction hood.

Advantageously, the separating element comprises two carding segments. Advantageously, the fixing card element comprises two carding segments.

Advantageously, the pressure element is capable of adjustably altering the pressure between the cover and the roller. Advantageously, the pressure element comprises a pressure bar or similar. Preferably, at least three modules are present in the pre-carding zone and/or post-carding zone. Advantageously, in the precarding zone and/or post-carding zone-viewed in the direction of rotation of the roller-at least one impurity-separating module is mounted upstream of at least one ne-separating module. Advantageously, in the pre-carding zone and/or post-carding zone-viewed in the direction of rotation of the roller-at least one impurity separating module is mounted downstream of at least one nep-separating module. Advantageously, the modules are arranged on the curved extension of the card. Advantageously, the curved extension is secured to a card plate on each side of the card.

Advantageously, the pre-carding zone and/or the postcarding zone is subdivided-in relation to the axis of

rotation of the roller-into a plurality of angular regions, all of which have a uniform angular extent or an integral multiple of this uniform angular extent.

Advantageously, the modules encompass the same angular range, that is, the subtend substantially equal angles at the axis of the roller. Advantageously, the curved extension is adjustable by means of at least three adjusting elements, for example, adjusting spindles or similar. Advantageously, a neutral covering element is arranged in at least one angular range.

The invention also provides an apparatus on a carding machine, in which, in the pre-carding and/or post-carding zone, a plurality of working elements, for example, fixed carding elements, suction devices, separating blades and the like, are arranged lying opposite a roller, for example, a cylinder, andviewed in the circumferential direction of the rollerare arranged lying side by side, a module being formed from at least two working elements, wherein in the precarding zone and/or the post-carding zone, at least two modules are present, which are provided for separation of impurities (contaminants) such as trash and the like and/or for the separation of neps.

The invention also provides a method for removing unwanted material from fibre material comprising subjecting the fibre material to treatment by first and second modules opposed to a roller, each module comprising at least two working elements, one of said

first and second modules being arranged for promoting removal of neps and the other of said first and second modules being arranged for promoting removal of impurities.

Certain illustrative embodiments of the invention will now be described in detail with reference to the accompanying drawings, in which: Fig. 1 is a schematic side view of a carding machine with an apparatus according to the invention; Fig. 2 is a side view of an embodiment of the apparatus having two modules for separation of impurities in the pre-carding zone; Fig. 3 is a side view of a further embodiment of the apparatus having two modules for separation of neps in the post-carding zone; Fig. 4 is a side view of an embodiment of the apparatus having three modules for separation of impurities and neps in the pre-carding zone; and Fig. 5 is a side view of an embodiment of the apparatus having three modules for separation of impurities and neps in the post-carding

zone.

Figure 1 shows a carding machine, for example, a high-performance DK 903 (trade mark) carding machine made by Trützschler GmbH & Co. KG, with feed roller 1, feed table 2, licker-ins 3a, 3b, 3c, cylinder 4, doffer 5, stripping roller 6, squeezing rollers 7,8, webguide element 9, web funnel 10, take-off rollers 11, 12, revolving card top 13 with card top bars 14, can 15 and can coiler 16. The directions of rotation of the rollers are shown by respective curved arrows. The letter A denotes the working direction. The apparatus according to the invention can be arranged, for example at locations B and/or C adjacent to the cylinder 4. At location B, as shown in Fig. 2, two modules B1, B2 are provided one behind the other-in the direction of rotation 4a of the cylinder-each having a fixed carding element 18a, a suction hood 19a with separating blade 20 and separating opening 21 and a pressure element 17a with pressure bar 22. The modules Bi, B2 arranged one behind the other permit a substantial improvement in the separation of impurities such as trash, bits of seed, bits of leaf and so on. At location C, as shown in Fig. 3, two modules Ci, Cs are arranged one behind the other-viewed in the direction of rotation 4a of the cylinder 4-each having a pressure element 17b with pressure bar 22, a suction hood 19b with separating blade 20 and separating

opening 21 and a fixed carding element 18b. The arrangement of the modules Cl, C2 one behind the other enables a substantial improvement in the separation of neps to be achieved. The reference numeral 4b denotes the clothing of the cylinder. The reference numerals 26,26a denote the cover lying opposite the clothing 4b.

In the embodiments of Figs. 4 and 5, the precarding zone B and the post-carding zone C, respectively, contain three modules, of which two modules B1, B3 ; C1, C3 respectively are used for separation of impurities and one module B2 ; C2 is used for separation of neps. The locations, specified by sequential numbering in the clockwise or anti-clockwise direction are provided with the following working elements: 1-pressure element 17a, 17b 2-separating element 19a, 19b 3-fixed carding element 18a, 18b 4-fixed carding element 18a, 18b 5-separating element 19a, 19b 6-pressure element 17a, 17b 7-pressure element 17a, 17b 8-separating element 19a, 19b 9-fixed carding element 18a, 18b The modules B1 or C1 (which may consist of elements 1,2, 3 above), B2 or C2 (which may consist of

elements 4,5, 6 above) and B3 or C3 (which may consist of elements 7,8, 9 above) can be in the form of a group of elements which can be manipulated as a group and may, if desired, be preadjusted.

The reference numeral 24 denotes a neutral covering element. The modules B1, B2, B3; C1, C2, C3, are arranged on the two curved extensions 27a, 27b of the carding machine. The curved extensions 27a and 27b are secured to a respective card plate 25a, 25b on each side of the card. The curved extensions 27a, 27b are adjustable by means of at least three adjusting

spindles 28a1, 28a2, 28a3 and 28b1, 28b2, 28b3 respectively. The spacing a (Figs 2 and 3) between working elements, that is, modules, and the clothing of the cylinder 4 can be adjusted in this manner.

It will be appreciated that features described with reference to any one of Figs. 2 to 5 may where appropriate be included with features of any of the other Figures. For example, it is possible in principle to have two or more modules in the precarding zone only (that is, upstream in the working direction of the main carding zone, corresponding in the embodiments described to the part of roller 4 opposed to revolving card top 13) or to provide in combination therewith one or more modules in the postcarding zone (that is, downstream in the working direction of the main carding zone, that is, the revolving card top 13). Similarly, there may be two or

more modules in the post-carding zone only, or they may be provided in combination therewith at least one module in the pre-carding zone.

Although not shown in Figs. 2 and 3, adjusting means for adjusting the space a may be provided for the modules of those Figures, for example, analogously to those illustrated in Figs. 4 and 5.

Claims

Claims 1. An apparatus on a carding machine, having a roller and, associated with the roller, a pre-carding zone and a post-carding zone, the apparatus comprising at least two separation modules arranged in the pre-carding zone and/or at least two separation modules arranged in the post-carding zone for the separation of impurities and/or neps, each module being opposed to the roller and comprising a plurality of working elements.
2. An apparatus according to claim 1, in which there are at least two modules in the pre-carding zone.
3. An apparatus according to claim 1 or claim 2, in which there are at least two modules in the postcarding zone.
4. An apparatus according to any one of the preceding claims, in which said at least two separation modules comprise at least one module for the separation of impurities, that module comprising, arranged in orderviewed in the direction of rotation of the roller-a fixed carding element, a separating element and a pressure element.
5. An apparatus according to any one of the preceding claims, in which said at least two separation modules comprise at least one module for the separation of neps, that module comprising, arranged in orderviewed in the direction of rotation of the roller-a pressure element, a separating element and a fixed

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carding element.
6. An apparatus according to any one of the preceding claims, in which there is present as a working element in each of said at least two separating modules a separating element.
7. An apparatus according to claim 6, in which the separating element comprises a suction hood.
8. An apparatus according to claim 6 or claim 7, in which the separating element comprises a separating blade.
9. An apparatus according to any one of the preceding claims, in which there is present as a working element in at least one of the modules a fixed carding element.
10. An apparatus according to claim 9, in which the fixed carding element comprises two carding segments.
11. An apparatus according to any one of the preceding claims, in which there is present as a working element in at least one of the modules a pressure element.
12. An apparatus according to claim 11, in which the pressure element is capable of adjustably altering the pressure between the cover and the roller.
13. An apparatus according to claim 11 or claim 12, in which the pressure element comprises a pressure bar or similar.
14. An apparatus according to any one of the preceding claims, in which at least three modules are present in the pre-carding zone.
15. An apparatus according to any one of the preceding

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claims, in which at least three modules are present in the post-carding zone.
16. An apparatus according to any one of the preceding claims, in which there is provided in the pre-carding zone-viewed in the direction of rotation of the roller-at least one impurity-separating module mounted upstream of at least one nep-separating module.
17. An apparatus according to any one of the preceding claims, in which there is provided in the post-carding zone-viewed in the direction of rotation of the roller-at least one impurity-separating module mounted upstream of at least one nep-separating module.
18. An apparatus according to any one of the preceding claims, in which in the pre-carding zone there is provided-viewed in the direction of rotation of the roller-at least one impurity-separating module mounted downstream of at least one nep-separating module.
19. An apparatus according to any one of the preceding claims, in which in the post-carding zone there is provided-viewed in the direction of rotation of the roller-at least one impurity-separating module mounted downstream of at least one nep-separating module.
20. An apparatus according to any one of the preceding claims, in which the arrangement is such that the spacing between each of the modules and the roller can be varied.

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21. An apparatus according to any one of the preceding claims, in which the modules are arranged on a curved extension of a card cover element.
22. An apparatus according to claim 21, in which the curved extension is secured to a card plate on each side of the card.
23. An apparatus according to claim 21 or claim 22, in which the curved extension is adjustable for adjusting the spacing between the working elements and the roller.
24. An apparatus according to claim 23, in which the curved extension is adjustable by means of at least three adjusting elements.
25. An apparatus according to any one of the preceding claims, in which-in relation to the axis of rotation of the roller-the pre-carding zone and/or the postcarding zone can be notionally be subdivided into a plurality of angular regions, all of which have a uniform angular extent or an integral multiple of this uniform angular extent.
26. An apparatus according to claim 22, in which each of the modules encompasses the same angular range.
27. An apparatus according to any one of the preceding claims, in which a neutral covering element subtends at the roller axis an angle substantially equal to the angle subtended by each module.
28. An apparatus on a carding machine, in which, in the pre-carding and/or post-carding zone, a plurality

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of working elements, for example, fixed carding elements, suction devices, separating blades and the like, are arranged lying opposite a roller, for example, a cylinder, and-viewed in the circumferential direction of the roller-are arranged lying side by side, a module being formed from at least two working elements, characterised in that in the precarding zone and/or the post-carding zone at least two modules are present, which are provided for separation of impurities (contaminants) such as trash and the like and/or for the separation of neps.
29. An apparatus for removal of impurities and/or neps substantially as described herein with reference to and as illustrated by any one of Figs. 1 to 5.
30. A carding machine comprising an apparatus according to any one of the preceding claims.
31. A method of removing unwanted material from fibre material comprising subjecting the fibre material to treatment by modules opposed to a roller each module comprising at least two working elements, one of said first and second modules being arranged for promoting removal of neps and the other of said first and second modules being arranged for promoting removal of impurities.
32. A method according to claim 31, in which the fibre material is treated in series by said first and second modules and is subsequently subjected to a carding step.

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33. A method according to claim 31 or claim 32, in which the fibre material is carded and is subsequently subjected to treatment by a module for removal of neps and a module for removal of impurities.