Title of Invention

APPARATUS AT A CARDING MACHINE HAVING A WEB REMOVAL AND SLIVER FORMATION DEVICE .

Abstract

Apparatus at a carding machine having a web removal and silver formation device, wherein there are provided, following on from the web removal device, a web funnel and a pair of draw-off rollers, which are arranged to pivot together about a rotary mounting, characterized in that the web-guiding element (9), on the one hand, and the web funnel (10) together with the pair of draw-off rollers (11, 12), on the other hand, are arranged to pivot (C, D, E, F, G, H) separately about the rotary mounting (20) and are connected to one another by means of a locking and unlocking device (26, 27, 28, 29,30).

Full Text

Apparatus at a carding machine having a web removal and sliver formation device The invention relates to an apparatus at a carding machine having a web removal and sliver formation device, wherein there are provided, following on from the web removal device, a web-guiding element, a web funnel and a pair of draw-off rollers, which are arranged to pivot about a rotary mounting. In a known apparatus, a screw connection is provided between the web-guiding element, the draw-off rollers (calendering mechanism) and the draw-off roller covering. In order to be able to carry out maintenance and servicing work on the calendering mechanism, the screw connections have to be released and removed, which can be done only by using tools. Because the fastening is screwed through several components in succession and consists partly of sheet metal edge parts, dimensional discrepancies can occur in the spacing dimension between the web-guiding element and the associated nip roller. Even when the web-guiding element (Webspeed) is completely disassembled, the accessibility of the calendering rollers (draw-off rollers) is still inadequate. The invention is accordingly based on the problem of providing an apparatus of the kind described at the beginning which avoids the mentioned disadvantages and which especially is dimensionally stable and facilitates maintenance and servicing work. The problem is solved by the characterising features of claim 1. In accordance with the invention, a separate linkage of the web-guiding element (Webspeed) about an axis of rotation, preferably about the table shaft, is provided. By that means, the web-guiding element, on the one hand, and the web funnel together with the draw-off rollers, on the other hand, can be rotated about the rotary mounting both individually and also together, thereby providing a stationary rotatable linkage in the machine (carding machine). Servicing work is possible without disassembly of the web-guiding element at the calendering mechanism. Maintaining the prespecified spacing dimension of the web- guiding element with respect to the nip roller is made possible by means of the constructional arrangement. Pivoting up of the web-guiding element can be assisted and limited by means of a pneumatic spring. Opening and closing are carried out without expending a major amount of force. Advantageously, opening is achieved merely by actuation of a push button. Preferably, the torsional rigidity is substantially increased by incorporating a rectangular tube. Preference is given to providing the web-guiding element with fine adjustment of the functional edge (spacing between the web-guiding element and nip roller). Claims 2 to 19 contain advantageous developments of the invention. The invention will be described hereinafter in greater detail with reference to exemplary embodiments shown in the drawings, in which: Fig. 1 shows, in a diagrammatic side view, a carding machine having the apparatus according to the invention; Figs. 2a to 2c are side views of the apparatus according to the invention, wherein the web-guiding element, on the one hand, and the draw-off roller together with the web funnel, on the other hand, are in the operational position (Fig. 2a) and have been rotated all together about the table shaft (Fig. 2b), and the web- guiding element has been rotated back into the operational position while the draw-off rollers together with the web funnel remain rotated about the table shaft (Fig. 2c); Fig. 3 is a diagrammatic front view of the linkage of the web-guiding element, on the one hand, and the draw-off rollers together with the web funnel, on the other hand, to the table shaft; and Fig. 4 shows the locking and unlocking device. Fig. 1 shows a carding machine, for example a Triitzschler TC 03 carding machine, having a feed roller 1, feed table 2, lickers-in 3a, 3b, 3c, cylinder 4, doffer 5, stripper roller 6, nip rollers 7, 8, web-guiding element 9, web funnel 10, draw-off rollers 11, 12, revolving card top 13 having card-top-deflecting rollers 13a, 13b and card top bars 14, can 15 and can coiler 16. Curved arrows denote the directions of rotation of the rollers. Reference letter M denotes the centre (axis) of the cylinder 4. Reference numeral 4a denotes the clothing and reference numeral 4b denotes the direction of rotation of the cylinder 4. Reference letter C denotes the direction of rotation of the revolving card top 13 at the carding location and reference letter B denotes the direction in which the card top bars 14 are moved on the reverse side. Reference numeral 18 denotes a card feeder. The housing inside which the draw- off rollers 11, 12 and the web funnel 10 are arranged is denoted by reference numeral 25. Fig. 2a shows the apparatus according to the invention in the operational position. (The fibre web and fibre sliver are known per se and not shown.) Following on from the nip rollers 7, 8, there are provided the web-guiding element 9, the web funnel 10 and the pair of draw-off rollers 11, 12. The pair of draw-off rollers 11, 12 and the web funnel 10 are arranged at a housing 25, for example made from sheet metal. In accordance with Fig. 2b, the web- guiding element 9 and the housing 25 are fixedly connected (locked) to one another by means of the locking and unlocking device 2 6 and as a result thereof have together been rotated in direction C by means of rotation of the table shaft 20. In accordance with Fig. 2c, the locking and unlocking device 26 has been unlocked so that the web- guiding element 9 and the housing 25 have been separated from one another. The web-guiding element 9 has been pivoted back in direction F into the operational position, whereas the housing 25 remains in the rotated position. It is also possible for the web-guiding element 9 to remain in the operational position and the housing 25 to be pivoted in direction G. The rear face 9a of the web-guiding element 9 closes off the face 25a of the housing 25 in accordance with Figs. 2a, 2b, whereas in accordance with Fig. 2c the face 25a is open and, as a result, is accessible for servicing and maintenance work, for example on the web funnel 10 or rollers 11, 12. According to Fig. 3, the mountings of the draw-off rollers 11, 12 are fastened in a mounting element 23, for example a cast mounting. The mounting element 23 is connected, by means of screws 24, to the table shaft 20 for conjoint rotation therewith. As a result, the table shaft 20 and the mounting element 23 (and, together with the latter, the rollers 11, 12 and the web funnel 10) are necessarily rotated. The table shaft 20 is rotated - in a manner not shown - by means of a drive motor and transmission elements, for example a pneumatic cylinder, or electric motor provided with toothed belts. Two mounting elements 21a, 21b are fastened to the rear face 9a of the web-guiding element 9 by means of screws 22a and 22b, respectively. The mounting elements 21a, 21b are arranged to be loosely rotatable about the table shaft 20 (see Figs. 2b and 2c, arrows C, D and E, F). According to Fig. 4, there is fastened to the rear face 9a of the web-guiding element 9 a hoop 28, through the opening of which the free end of an angular hook 27 can engage. The other end of the hook 27 is rotatably mounted in a rotary mounting 29 (see curved arrows I, K), which is fastened to the housing 25. Coupled to the hook 27 is a push rod 31, which is biased by a compression spring 30. As a result of manual pressure on the push rod 31, the free end of the hook 27 is rotated about the rotary mounting 29 and, as a result, the hook 27 is pushed out from the hoop 28. As a result, the locking and unlocking device 26 is unlocked (see Fig. 2c). We Claim: 1. Apparatus at a carding machine having a web removal and silver formation device, wherein there are provided, following on from the web removal device, a web funnel and a pair of draw-off rollers, which are arranged to pivot together about a rotary mounting, characterized in that the web-guiding element (9), on the one hand, and the web funnel (10) together with the pair of draw-off rollers (11, 12), on the other hand, are arranged to pivot (C, D, E, F, G, H) separately about the rotary mounting (20) and are connected to one another by means of a locking and unlocking device (26, 27, 28, 29,30). 2. Apparatus as claimed in claim 1, wherein the rotary mounting is the table shaft. 3. Apparatus as claimed in claim 1 or 2, wherein the table shaft is arranged at the exit from the carding machine. 4. Apparatus as claimed in any one of claims 1 to 3, wherein the web funnel together with the draw-off rollers are arranged in a housing. 5. Apparatus as claimed in any one of claims 1 to 4, wherein the mountings of the draw-off rollers are fastened in a housing element (holding element). 6. Apparatus as claimed in any one of claims 1 to 5, wherein the housing element is connected to the table shaft for conjoint rotation therewith, for example by means of screws. 7. Apparatus as claimed in any one of claims 1 to 6, wherein the housing element and the table shaft necessarily rotate together with one another. 8. Apparatus as claimed in any one of claims 1 to 7, wherein the housing element, the draw-off rollers and the web funnel are rotatable together with the table shaft. 9. Apparatus as claimed in any one of claims 1 to 8, wherein the web- guiding element is, by means of at least one mounting element, mounted so as to be rotatable about the table shaft. 10. Apparatus as claimed in any one of claims 1 to 9, wherein at least one mounting element is fastened to the web-guiding element, for example by means of screws. 11. Apparatus as claimed in any one of claims 1 to 10, wherein the locking and unlocking device comprises a passive engagement element, for example a hoop, an eyelet or the like. 12. Apparatus as claimed in any one of claims 1 to 11, wherein the locking and unlocking device comprises an active engagement element, for example a hook, a finger or the like. 13. Apparatus as claimed in any one of claims 1 to 12, wherein the hook or the like is mounted on a rotary mounting. 14. Apparatus as claimed in any one of claims 1 to 13, wherein the hook or the like is resiliently biased, for example by means of a spring. 15. ~ Apparatus as claimed in any one of claims 1 to 14, wherein the passive engagement element is mounted on the web-guiding element. 16. Apparatus as claimed in any one of claims 1 to 15, wherein the active engagement element is mounted on the housing for the draw-off rollers. 17. Apparatus as claimed in any one of claims 1 to 16, wherein a spring-loaded push actuator is associated with the hook or the like. 18. Apparatus as claimed in any one of claims 1 to 17, wherein a rectangular tube is associated with the web-guiding element. 19. Apparatus as claimed in any one of claims 1 to 18, wherein the web-guiding element is provided with a device for fine adjustment of the functional edge (spacing a between the web-guiding element and nip rollers). Apparatus at a carding machine having a web removal and silver formation device, wherein there are provided, following on from the web removal device, a web funnel and a pair of draw-off rollers, which are arranged to pivot together about a rotary mounting, characterized in that the web-guiding element (9), on the one hand, and the web funnel (10) together with the pair of draw-off rollers (11, 12), on the other hand, are arranged to pivot (C, D, E, F, G, H) separately about the rotary mounting (20) and are connected to one another by means of a locking and unlocking device (26, 27, 28, 29,30).

Documents:

552-KOL-2004-(07-12-2011)-FORM-27.pdf

552-KOL-2004-(13-08-2012)-FORM-27.pdf

552-kol-2004-granted-abstract.pdf

552-kol-2004-granted-claims.pdf

552-kol-2004-granted-correspondence.pdf

552-kol-2004-granted-description (complete).pdf

552-kol-2004-granted-drawings.pdf

552-kol-2004-granted-examination report.pdf

552-kol-2004-granted-form 1.pdf

552-kol-2004-granted-form 18.pdf

552-kol-2004-granted-form 2.pdf

552-kol-2004-granted-form 26.pdf

552-kol-2004-granted-form 3.pdf

552-kol-2004-granted-form 5.pdf

552-kol-2004-granted-priority document.pdf

552-kol-2004-granted-reply to examination report.pdf

552-kol-2004-granted-specification.pdf

552-kol-2004-granted-translated copy of priority document.pdf