Title of Invention

APPARATUS FOR SETTING OF CARDING INTENSITY IN A CARDING MACHINE

Abstract

The invention relates to an apparatus for setting carding intensity in a carding machine, wherein at least one stationary carding segment (17) comprising a carrier (18) together with at least two carding elements (19a to 19f) is associated with a roller (4), which carding elements are arranged behind one another in the direction of rotation (4a), of the roller, and wherein the clothing (46) of the carding elements and the roller clothing are located opposite one another, characterized in that the carding surface (20a, 20b) of at least one carding element forms an angle (∞,β) with a respective tangent (21a, 21b) at the clothing of the roller, in that the carding elements are arranged in stationary manner with respect to the roller, and in that said carding segment (17) exclusive of said carding elements, is immovable.

Full Text

The invention relates to an apparatus at a carding machine, wherein at least one tationary carding segment comprising a carrier together with at least two carding elements is associated with a roller, for example a cylinder, which carding elements are arranged behind one another in the direction of rotation of the roller, and wherein the clothings of the carding elements and the roller clothing are located opposite one another. In a known apparatus (EP 0 431 482), a plurality of stationary carding segments, each comprising three fixed carding elements, are associated with the cylinder of the carding machine, each of them being fastened by means of end parts to the associated side frame of the carding machine. The mounting surfaces for the three fixed carding elements on a carrier are so matched to the curvature of the cylinder that, when the carding segment has been optimally set, the width of each carding element extends ... perpendicular to a respective radius of the cylinder. The carding surfaces of the carding elements are accordingly, in each case, oriented parallel to a corresponding tangent at the clothing of the cylinder. Re-setting can be so performed, for example with the aid of a suitable gauge, that the clothing of one of the carding elements has a desired spacing from the clothing of the cylinder. However, in all probability, the clothings of the other two carding elements will not then have the desired spacing from the cylinder clothing. The desired setting is achieved by means of a pivoting movement of the carding segment about a predetermined axis. During that pivoting movement, all three inter-connected carding elements are displaced until the desired setting has been achieved, at which setting the width of all the carding elements extends perpendicular to a respective radius of the cylinder. The complexity of the construction for pivoting and fixing the carding segment is disadvantageous. It is also disadvantageous that orientation of the carding elements parallel to a respective tangent at the roller results in increased fibre damage and nep formation. Finally, the clothings of the carding elements are subject to considerable wear in operation. 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 simple in terms of construction and installation, enables individual setting of the carding intensity and makes possible a reduction in wear on the clothings of the carding elements. The measures according to the invention make it possible for the angle between the clothing surface of each carding element and the cylinder clothing - the so - called "offset angle" - to be selected individually. It is especially advantageous that, as a result of specifically or individually orienting the clothing surfaces of the carding elements in relation to one another, the ratio of fibre damage to nep formation is very considerably improved. In addition, the lasting technical improvement is achieved in especially simple manner in terms of construction. As a result of the stationary arrangement of the carding elements there is no need for additional devices for pivoting the carding segments. According to a further advantage, the wear on the clothings of the carding elements is considerably reduced as a result of the individual inclination of the carding surfaces. 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 apparatuses according to the invention; Fig. 2 shows, in a side view and in section, a fixed carding segment having two non- movable carding elements, the carding surfaces of which are arranged at an angle to the cylinder clothing; Fig. 2a shows a carding element having a sawtooth clothing; Fig. 3a shows three fixed carding segments according to the invention in the preliminary carding zone of a revolving card top carding machine; Fig. 3b is a top view of the fastening at both ends of a carding segment; Fig. 4 shows spacings between the clothings of two carding elements and the cylinder clothing; Fig. 5 shows two carding elements, the carding surfaces of which form an angle with a respective radius of the cylinder; Fig. 6 shows two carding elements, which are rotatable about axes parallel to the cylinder axis; Fig. 7 shows two manually rotatable carding elements together with a display device; Fig. 8 shows two motor-rotatable carding elements, each having a deflection element; Fig. 9 shows three carding segments, each comprising two carding elements exhibiting - seen in the direction of rotation of the cylinder - an offset angle, no offset angle and a counter- offset angle; Fig. 10 shows three carding segments, each comprising one non-movable carding element; Fig. 11 shows three carding segments, each comprising one rotatable carding element; and Fig. 12 is a generalised circuit diagram having an electronic control and regulation device together with two motor-driven actuating members for rotation of the carding elements, two angle-measuring devices and a display device. Fig. 1 shows a carding machine, for example a Trützschler DK 903 high-performance 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, can coiler 16 and fixed carding segments 17', 17' according to the invention each having carding elements. Reference numeral 4a denotes the direction of rotation of the cylinder 4, reference numeral 4b denotes the clothing of the cylinder 4, and reference numeral 4c denotes the central axis of the cylinder 4. Reference letter G denotes the work direction. The carding segment 17 according to Fig. 2 consists of a carrier 18 and two carding elements 19a, 19b, which are arranged behind one another in the direction of rotation (arrow 4a) of the cylinder 4, the clothings 20a, 20b (Fig. 2a) of the carding elements 19a and 19b, respectively, lying opposite the clothing 4b of the cylinder 4. The carding elements 19a, 19b are stationary and arranged in movable manner. The carding surfaces of the sawtooth-shaped clothings 20a, 20b (see Fig. 2a) of the carding elements 19a, 19b form an acute angle a and β, respectively, with a respective tangent 21a and 21b, respectively, at the clothing 4b of the cylinder 4. In accordance with Fig. 3a, fixed carding segments 17a, 17b and 17c are arranged in the preliminary carding zone between the licker-in 3c and the rear card-top-deflecting roller 13a of the revolving card top 13. As Fig. 3b shows, the carrier 18 of each carding segment 17 is fastened to two fastening plates 27a, 27b. The fastening plates 27a, 27b are attached, by means of bolts 28a, 28b, to an extension bend 29a and 29b, respectively (Fig. 3a shows only the extension bend 29a on one side of the carding machine), which are in turn fastened to the card plate 30a and 30b, respectively, on each side of the carding machine (only 30a is shown in Fig. 3a). In accordance with Fig. 4, the clothing 20a of the carding element 19a forms an acute angle a with the tangent at the cylinder clothing 4b (cf. Fig. 2), as a result of which the carding nip becomes narrower in the direction of rotation 4a of the cylinder 4. The angle of inclination a is designated the so-called "offset angle". The spacing between the clothing 20a and the cylinder clothing 4b is denoted by reference letter a at the entrance to the carding nip and by reference letter b at the exit from the carding nip, a being greater than b. The clothing 20b of the carding element 19b forms an acute angle β with the tangent at the cylinder clothing 4b (cf. Fig. 2), as a result of which the carding nip opens out in the direction of rotation 4a of the cylinder 4. The angle of inclination β is designated the so-called "counter-offset angle". The angles α and β may be, for example, about 1°. The spacing between the clothing 20b and the cylinder clothing 4b is denoted by reference letter c at the entrance to the carding nip and by reference letter d at the exit from the carding nip, c being less than d. The spacings b and c, that is to say at the narrowest positions of the carding nip, are preferably the same or substantially the same, for example 3/1000". As Fig. 5 shows, the carding surface 20a of the carding element 19a forms an acute angle γ with a radius r1 of the cylinder 4, and the carding surface 20b of the carding element 19b forms an acute angle 8 with a radius r2 of the cylinder 4. In accordance with Fig. 6, the carding elements 19a, 19b are arranged to rotate at a rotary connection about a respective axis of rotation 22a and 22b, which is oriented parallel to the roller axis 4c (see Fig. 1). The axes of rotation 22a, 22b are located in a radial direction in relation to the cylinder 4, in the middle of the respective carding element 19a and 19b. As a result, the angles α, β (see Fig. 2) between the clothings 20a, 20b of the carding elements 19a, 19b and the cylinder clothing 4b are adjustable individually (that is to say, independently of one another) and by simple means. When there is a change in the angles α, β, the spacings b and c (see Fig. 4) preferably do not change. The carding elements 19a, 19b are stationary and arranged in movable manner in the carding segment 17a. "Stationary" means that the carding elements 19a, 19b maintain their position as such in the carding element 17a and also with respect to the cylinder 4 without change. "Movable" means that the carding elements 19a, 19b are, for example, rotatable, by means of which the described angles of inclination α, β and spacings can be changed. In accordance with Fig. 7, one end of a lever 23a, 23b acts on a respective point of rotation 22a and 22b of the carding elements 19a, 19b. At the start, the lever 23b is in position no. 5 on the display device 24 (zero position). Associated with the lever 23a is a further display device (not shown). The starting position corresponds to an angle α = 0° and β = 0°. Moving the levers 23a, 23b in the direction of arrows E, F causes the associated carding element 19a and 19b, respectively, to rotate about the respective point of rotation 22a and 22b. The positions of the levers 23a, 23b can be fixed by means of a latching device (not shown) or the like. In accordance with Fig. 8, adjustable drive motors 25a and 25b, for example step motors, act on the rotary connections 22a, 22b and set the angles of inclination α, β of the carding elements 19a, 19b in the manner shown in Fig. 7. At the intake into the carding elements 19a, 19b there is arranged, upstream of the clothings 20a, 20b of the carding elements 19a and 19b, respectively, seen in the direction of rotation 4a of the cylinder 4, a respective deflecting element 26a and 26b (spoiler). The deflecting element 26a, 26b may be longer than, as long as or shorter than the tips of the clothings 20a, 20b. In accordance with Fig. 9, three fixed carding segments 17a, 17b and 17c are provided opposite the clothing 4b of the cylinder 4 (cf. Fig. 3a in that regard). The fixed carding segments 17a to 17c each comprise two carding elements 19a, 19b and 19c, 19d and 19e, 19f, respectively. Seen in the direction of rotation 4a of the cylinder 4, the carding elements 19a, 19b arranged at the fibre intake exhibit an offset angle, the carding elements 19c, 19d arranged in the central region exhibit no offset angle, and the carding elements 19e, 19f arranged at the fibre exit exhibit a counter-offset angle, by means of which optimum carding action is brought about, together with a considerable reduction in wear on the carding clothings 20. Figs. 10 and 11 show two arrangements, wherein one carding element 19', 19' and 19'' is associated with each of the fixed carding segments 17a, 17b and 17c, respectively. In accordance with Fig. 10, the carding elements 19', 19', 19'' are stationary and arranged in non-movable manner. The carding element 19' forms a offset angle, the carding element 19' forms no offset angle, and the carding element 19'' forms a counter-offset angle. In accordance with Fig. 11, the carding elements 19', 19', 19 '' are mounted so as to be rotatable about a respective axis of rotation 22', 22' and 22''. All three carding elements 19', 19' and 19'' form an offset angle, the respective carding nips and angles of rotation becoming smaller in the direction of rotation 4a of the cylinder 4. In accordance with Fig. 12, the step motors 25a, 25b (Fig. 8), two angle-measuring devices 32a, 32b and a display device 33, for example a display monitor or the like, are connected to an electronic control and regulation device 31, for example a microcomputer machine control, by means of which the angles of inclination α β of the carding elements 19a, 19b can be adjusted either manually by means of an input device (not shown) or automatically by means of a memory (not shown). WE CLAIM : 1. Apparatus for setting carding intensity in a carding machine, wherein at least one stationary carding segment (17) comprising a carrier (18) together with at least two carding elements (19a to 19f) is associated with a roller (4), which carding elements are arranged behind one another in the direction of rotation (4a), of the roller, and wherein the clothing (46) of the carding elements and the roller clothing are located opposite one another, characterized in that the carding surface (20a, 20b) of at least one carding element forms an angle (∞,β) with a respective tangent (21a, 21b) at the clothing of the roller, in that the carding elements are arranged in stationary manner with respect to the roller, and in that said carding segment (17) exclusive of said carding elements, is immovable. 2. The apparatus as claimed in claim 1, wherein said roller (4) is a carding cylinder of the carding machine. 3. The apparatus as claimed in claim 1, wherein the carding elements (19a, 19b) are non-movable. 4. The apparatus as claimed in claim 1, wherein the carding elements (19a to 19f) are movable. 5. The apparatus as claimed in claim 1, wherein the first and second carding elements (19a, 19b) are arranged to be individually movable in the carrier (18). 6. The apparatus as claimed in claim 1, wherein the carding elements (19a to 19f) are each rotatable about an axis parallel to the roller (4). 7. The apparatus as claimed in claim 5, wherein an adjusting device for the rotation is provided. 8. The apparatus as claimed in claim 5, wherein each carding element (19a-19f) is arranged to be rotatable in the carrier (18) with two degrees of freedom. 9. The apparatus as claimed in claim 1, wherein said first and second elements (19a, 19b) are each inclined relative to respective tangents (21a, 21b) at the opposed roller surface (4b), the angle of inclination (α) being substantially the same. 10. The apparatus as claimed in claim 1, wherein said first and second elements are each inclined to respective tangents (21a, 21b) at the opposed roller surface (4b), the angles (∞1,∞2) of inclination being different. 11. The apparatus as claimed in claim 9, wherein each of the angle of inclination is acute (α,p). 12. The apparatus as claimed in claim 1, wherein said first and second elements are each inclined relative to respective tangents at the opposed roller surface (4b), at least one of the elements (19a, 19b) having an angle of inclination that is obtuse (∞,β). 13. The apparatus as claimed in claim 1, wherein an angle of inclination (∞,β) can be changed in operation and out of operation of the carding machine. 14. The apparatus as claimed in claim 1, wherein the angle of inclination (∞,β) for two carding elements can be changed simultaneously, the angular position settings of the carding elements being coupled to one another. 15. The apparatus as claimed in claim 14, wherein when the angles (∞,β) are changed, the transmission ratio (angular change) of each carding element is different. 16. The apparatus as claimed in claim 14, comprising an adjusting device (25a, 25b) for changing the angles of all the carding elements. 17. The apparatus as claimed in claim 1, wherein the angle of inclination (∞,β) is arranged to be changeable starting from a tangential position of the carding surface (20a, 20b) of the carding element (zero point). 18. The apparatus as claimed in claim 1, wherein the carding nip becomes smaller at the first carding element and larger at the second carding element, seen in the direction of rotation of the cylinder. 19. The apparatus as claimed in claim 1, wherein the first and second elements (19a, 19b) form with the roller (4) first and second carding nips, the spacings (b,c) at the narrowest locations of each of the first and second carding nips being the same or substantially the same. 20. The apparatus as claimed in claim 1, wherein two or more said carding elements are arranged to be adjusted in stepped manner from carding segment to carding segment, for example to be changed centrally by 0.5°. 21. The apparatus as claimed in claim 1, wherein position of the carding elements can be detected. 22. The apparatus as claimed in claim 1, wherein at least one device comprising said carding segment (17) is arranged in one or more zones selected from the preliminary carding zone between a licker-in and the rear card-top-deflecting roller (13a, 13b) of the revolving card (13) top, the after- carding zone between a doffer and a front card-top- deflecting roller of the revolving card top, and an underneath carding zone on said carding cylinder (4) between a doffer (5) and a licker-in (3c) of said carding machine. 23. The apparatus as claimed claim 2, comprising two or more said carding segments. (17a, 17b, 17c). 24. The apparatus as claimed in claim 1, wherein only stationary card top elements are associated with the cylinder of the carding machine, a plurality of said carding segments (17a, 17b, 17c) being provided at the cylinder (4). The invention relates to an apparatus for setting carding intensity in a carding machine, wherein at least one stationary carding segment (17) comprising a carrier (18) together with at least two carding elements (19a to 19f) is associated with a roller (4), which carding elements are arranged behind one another in the direction of rotation (4a), of the roller, and wherein the clothing (46) of the carding elements and the roller clothing are located opposite one another, characterized in that the carding surface (20a, 20b) of at least one carding element forms an angle (∞,β) with a respective tangent (21a, 21b) at the clothing of the roller, in that the carding elements are arranged in stationary manner with respect to the roller, and in that said carding segment (17) exclusive of said carding elements, is immovable.

Documents:

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

186-KOL-2004-ABSTRACT-1.1.pdf

186-KOL-2004-ABSTRACT.1.1.pdf

186-kol-2004-abstract.pdf

186-KOL-2004-AMANDED PAGES OF SPECIFICATION.pdf

186-KOL-2004-CANCELLED PAGES.pdf

186-KOL-2004-CLAIMS-1.1.pdf

186-KOL-2004-CLAIMS.pdf

186-KOL-2004-CORRESPONDENCE 1.2.pdf

186-KOL-2004-CORRESPONDENCE-1.1.pdf

186-KOL-2004-CORRESPONDENCE.1.3.pdf

186-kol-2004-correspondence.pdf

186-kol-2004-correspondence1.3.pdf

186-KOL-2004-DESCRIPTION (COMPLETE)-1.1.pdf

186-KOL-2004-DESCRIPTION (COMPLETE).1.1.pdf

186-kol-2004-description (complete).pdf

186-KOL-2004-DRAWINGS-1.1.pdf

186-kol-2004-drawings.pdf

186-KOL-2004-EXAMINATION REPORT REPLY RECIEVED.1.1.pdf

186-kol-2004-examination report.pdf

186-KOL-2004-FORM 1-1.1.pdf

186-KOL-2004-FORM 1.1.2.pdf

186-kol-2004-form 1.pdf

186-kol-2004-form 18.pdf

186-KOL-2004-FORM 2-1.1.pdf

186-KOL-2004-FORM 2.1.2.pdf

186-kol-2004-form 2.pdf

186-kol-2004-form 26.pdf

186-kol-2004-form 3.pdf

186-kol-2004-form 5.pdf

186-KOL-2004-FORM-27.pdf

186-kol-2004-granted-abstract.pdf

186-kol-2004-granted-claims.pdf

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

186-kol-2004-granted-drawings.pdf

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

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

186-kol-2004-granted-specification.pdf

186-KOL-2004-OTHERS DOCUMENTS.1.2.pdf

186-KOL-2004-OTHERS.pdf

186-KOL-2004-PETITION UNDER RULE 137-1.1.pdf

186-KOL-2004-PETITION UNDER RULE 137.pdf

186-kol-2004-priority document.pdf

186-KOL-2004-REPLY TO EXAMINATION REPORT.pdf

186-kol-2004-reply to examination report1.1.pdf

186-kol-2004-specification.pdf

186-kol-2004-translated copy of priority document.pdf