US20160201228A1 - Device on a carding machine for cotton, synthetic fibres or the like, having a rotatable strippiing roller - Google Patents

Device on a carding machine for cotton, synthetic fibres or the like, having a rotatable strippiing roller Download PDF

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Publication number
US20160201228A1
US20160201228A1 US14/913,238 US201414913238A US2016201228A1 US 20160201228 A1 US20160201228 A1 US 20160201228A1 US 201414913238 A US201414913238 A US 201414913238A US 2016201228 A1 US2016201228 A1 US 2016201228A1
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United States
Prior art keywords
roll body
clothing
roll
teeth
recesses
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Abandoned
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US14/913,238
Inventor
Christoph Leinders
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Truetzschler GmbH and Co KG
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Truetzschler GmbH and Co KG
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Assigned to TRUETZSCHLER GMBH & CO. KG reassignment TRUETZSCHLER GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEINDERS, CHRISTOPH
Publication of US20160201228A1 publication Critical patent/US20160201228A1/en
Abandoned legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/14—Constructional features of carding elements, e.g. for facilitating attachment of card clothing
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for

Definitions

  • the invention relates to a device on a flat card or roller card for cotton, synthetic fibres and the like, having a rotatable stripper roll which is arranged between a doffer and nip rolls, which stripper roll strips fibre material from the doffer and delivers it to the nip rolls, the stripper roll having a roll body which is provided with clothing teeth in the region of its curved surface.
  • the stripper roll of a carding machine is provided with all-steel clothing.
  • a sawtooth clothing is wound on a roll body.
  • the roll body and the sawtooth clothing form a two-part component.
  • the individual wire windings are applied one next to the other by means of ceramic fingers or a presser roller.
  • the transition from one winding to the next should as far as possible be without a gap.
  • the material web is transported from the doffer to the nip rollers at ever higher speeds. Even the smallest gaps between the clothing windings of the stripper roll can catch hold of individual fibres and tear them out of the web. Those fibres are then joined by further fibres, ultimately resulting in lapping of the stripper roll. Such lapping can result in serious damage to the machine.
  • the problem underlying the invention is to provide a device of the kind described at the beginning which avoids the mentioned disadvantages and which avoids trapping of fibre material and allows higher production rates, especially in a structurally simple way.
  • the clothing teeth of the clothing are formed by recesses made directly in the curved surface of the roll body, trapping of fibre material is avoided in a simple way.
  • a particular advantage is that the roll body and the clothing teeth are of one-piece construction. In particular, unlike the known stripper roll, separate manufacture and assembly, that is to say a two-piece construction resulting from arranging a separate sawtooth wire on the roll body, is avoided.
  • FIG. 1 is a diagrammatic side view of a carding machine having the device according to the invention
  • FIG. 2 is a sectional side view of the one-piece stripper roll of the carding machine, according to the invention.
  • FIG. 2 a shows a detail of the roll clothing according to FIG. 2 .
  • FIG. 3 shows a detail from a plan view onto the stripper roll according to the invention having gullets between adjacent clothing teeth in the circumferential direction and gaps between adjacent clothing teeth in the longitudinal direction of the stripper roll, and
  • FIG. 4 is a perspective broken-away view of the stripper roll according to FIGS. 1 and 2 having a helical arrangement of the clothing teeth relative to the rotational axis of the stripper roll.
  • FIG. 1 shows a carding machine, for example a Trützschler flat card TC, having a feed roll 1 , feed table 2 , lickers-in 3 a, 3 b, 3 c, cylinder 4 , doffer 5 , stripper roll 6 , nip rolls 7 , 8 , web guide element 9 , web funnel 10 , delivery rolls 11 , 12 , revolving flat top 13 with flat guide rollers 13 a, 13 b and flat bars 14 , can 15 and coiler 16 .
  • the directions of rotation of the rolls are indicated by curved arrows.
  • Reference letter M denotes the centre point (axis) of the cylinder 4 .
  • Reference numeral 4 a denotes the clothing (sawtooth clothing) and reference numeral 4 b denotes the direction of rotation of the cylinder 4 .
  • Reference numeral 5 a denotes the clothing (sawtooth clothing) and 5 b denotes the direction of rotation of the doffer 5 .
  • Reference letter B denotes the direction of rotation of the revolving flat top 13 in the carding position and reference letter C denotes the return transport direction of the flat bars 14 , with reference numerals 31 ′, 31 ′′ denoting functional elements and reference numerals 13 a and 13 b denoting flat guide rollers.
  • Arrow A denotes the working direction.
  • the sawtooth clothings 4 a and 5 a have been applied as separate components to the roll base body of the cylinder 4 and of the doffer 5 , respectively.
  • the stripper roll 6 has a roll body 6 c which is provided with clothing teeth 6 1 to 6 n in the region of its curved surface 6 d.
  • the clothing teeth 6 1 to 6 n are formed directly on the curved surface 6 d of the roll body 6 c, the roll body 6 c and the clothing teeth 6 1 to 6 n being of one-piece construction.
  • the clothing teeth 6 1 to 6 n together form the clothing 6 a of the stripper roll 6 .
  • the gullets 6 ′ to 6 m between adjacent clothing teeth 6 1 to 6 n in the circumferential direction of the stripper roll 6 are formed directly in the curved surface of the roll body 6 c by recesses that are open on one side.
  • the gullets 6 ′ to 6 m are substantially trapezoidal in shape relative to the rotational axis (see journal 17 a in FIG. 4 ).
  • the angle a between tooth front 6 3 and tooth back 6 4 of adjacent teeth 6 1 and 6 2 is about from 60° to 70°, for example 65°.
  • the spacing at the foot between adjacent teeth 6 1 and 6 2 in the circumferential direction B of the stripper roll 6 is denoted by reference letter a and the spacing of the tooth tips between adjacent teeth 6 1 and 6 2 is denoted by reference letter b.
  • the circumferential direction B corresponds to the direction of the direction of rotation arrow 6 b.
  • the spacing between adjacent teeth 6 7 and 6 8 in the longitudinal direction C of the stripper roll 6 is denoted by reference letter c.
  • the gaps 6 * to 6 p between adjacent clothing teeth, for example 6 7 and 6 8, in the longitudinal direction C, which gaps are open on one side, are formed directly in the curved surface 6 d of the roll body 6 c by recesses that are open on one side.
  • the gaps 6 * to 6 p are rectangular or square in cross-section (not shown).
  • the gaps 6 * to 6 p in each case between two rows of clothing teeth 6 1 to 6 n —are arranged parallel to one another (see FIG. 3 ).
  • the stripper roll 6 in the region of each of its two end faces 6 e and 6 f (only 6 e is shown), has a journal 17 a and 17 b, respectively (only 17 a is shown).
  • the clothing teeth 6 1 to 6 n seen in the longitudinal direction C, are arranged helically relative to the rotational axis (represented by the journals 17 a, 17 b ) of the stripper roll.
  • the gaps 6 ′ to 6 m are arranged helically relative to the rotational axis in longitudinal direction C.
  • the one-piece (one-part) stripper roll 6 consists of an aluminium alloy.
  • the clothing teeth 6 1 to 6 2, the gullets 6 ′ to 6 n and the gaps 6 * to 6 p are produced, for example, by turning on a lathe, planing or the like.
  • the invention has been described using the example of a stripper roll 6 .
  • the invention can be applied in the same way to other rolls of a flat card or roller card, for example as a feed roll 1 .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

A device for a flat card or roller card for cotton, synthetic fibres and the like having a doffer and nip rolls, the device including a stripper roll adapted for being rotatably mounted between the doffer and the nip rolls for stripping fibre material from the doffer and delivering the stripped fibre to the nip rolls. The stripper roll has a roll body having clothing teeth in a region of its curved surface. The clothing teeth of the clothing are formed directly on the curved surface of the roll body. The roll body and the clothing teeth of the clothing are of one-piece construction.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application is a U.S. National Stage of International Application No. PCT/EP2014/000759, filed Mar. 20, 2014, the U.S. being designated, and claimed priority to German Application No. DE 10 2013 013 602.4, filed on Aug. 19, 2013.
    • BACKGROUND OF THE INVENTION
  • The invention relates to a device on a flat card or roller card for cotton, synthetic fibres and the like, having a rotatable stripper roll which is arranged between a doffer and nip rolls, which stripper roll strips fibre material from the doffer and delivers it to the nip rolls, the stripper roll having a roll body which is provided with clothing teeth in the region of its curved surface.
  • In a known device (EP 0 972 865 A) the stripper roll of a carding machine is provided with all-steel clothing. A sawtooth clothing is wound on a roll body. The roll body and the sawtooth clothing form a two-part component. In practice, during application of the clothing the individual wire windings are applied one next to the other by means of ceramic fingers or a presser roller. As a result, the transition from one winding to the next should as far as possible be without a gap. In the case of the increasingly high production rates achieved on modern carding machines, the material web is transported from the doffer to the nip rollers at ever higher speeds. Even the smallest gaps between the clothing windings of the stripper roll can catch hold of individual fibres and tear them out of the web. Those fibres are then joined by further fibres, ultimately resulting in lapping of the stripper roll. Such lapping can result in serious damage to the machine.
    • SUMMARY OF THE INVENTION
  • The problem underlying the invention is to provide a device of the kind described at the beginning which avoids the mentioned disadvantages and which avoids trapping of fibre material and allows higher production rates, especially in a structurally simple way.
  • Because the clothing teeth of the clothing are formed by recesses made directly in the curved surface of the roll body, trapping of fibre material is avoided in a simple way. A particular advantage is that the roll body and the clothing teeth are of one-piece construction. In particular, unlike the known stripper roll, separate manufacture and assembly, that is to say a two-piece construction resulting from arranging a separate sawtooth wire on the roll body, is avoided.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention is explained in greater detail below with reference to exemplary embodiments shown in the drawings.
  • FIG. 1 is a diagrammatic side view of a carding machine having the device according to the invention;
  • FIG. 2 is a sectional side view of the one-piece stripper roll of the carding machine, according to the invention;
  • FIG. 2a shows a detail of the roll clothing according to FIG. 2,
  • FIG. 3 shows a detail from a plan view onto the stripper roll according to the invention having gullets between adjacent clothing teeth in the circumferential direction and gaps between adjacent clothing teeth in the longitudinal direction of the stripper roll, and
  • FIG. 4 is a perspective broken-away view of the stripper roll according to FIGS. 1 and 2 having a helical arrangement of the clothing teeth relative to the rotational axis of the stripper roll.
    •  DETAILED DESCRIPTION
  • FIG. 1 shows a carding machine, for example a Trützschler flat card TC, having a feed roll 1, feed table 2, lickers-in 3 a, 3 b, 3 c, cylinder 4, doffer 5, stripper roll 6, nip rolls 7, 8, web guide element 9, web funnel 10, delivery rolls 11, 12, revolving flat top 13 with flat guide rollers 13 a, 13 b and flat bars 14, can 15 and coiler 16. The directions of rotation of the rolls are indicated by curved arrows. Reference letter M denotes the centre point (axis) of the cylinder 4. Reference numeral 4 a denotes the clothing (sawtooth clothing) and reference numeral 4 b denotes the direction of rotation of the cylinder 4. Reference numeral 5 a denotes the clothing (sawtooth clothing) and 5 b denotes the direction of rotation of the doffer 5. Reference letter B denotes the direction of rotation of the revolving flat top 13 in the carding position and reference letter C denotes the return transport direction of the flat bars 14, with reference numerals 31′, 31″ denoting functional elements and reference numerals 13 a and 13 b denoting flat guide rollers. Arrow A denotes the working direction. The sawtooth clothings 4 a and 5 a (all-steel clothings) have been applied as separate components to the roll base body of the cylinder 4 and of the doffer 5, respectively. The stripper roll 6 has a diameter of, for example, d=126 mm (of the circle of tips (not shown) around the teeth 6 1 to 6 n) and a circumferential speed of, for example, v=310 m/min.
  • According to FIG. 2, the stripper roll 6 has a roll body 6 c which is provided with clothing teeth 6 1 to 6 n in the region of its curved surface 6 d. The clothing teeth 6 1 to 6 n are formed directly on the curved surface 6 d of the roll body 6 c, the roll body 6 c and the clothing teeth 6 1 to 6 n being of one-piece construction. The clothing teeth 6 1 to 6 n together form the clothing 6 a of the stripper roll 6.
  • In accordance with FIG. 2a , the gullets 6′ to 6 m between adjacent clothing teeth 6 1 to 6 n in the circumferential direction of the stripper roll 6 are formed directly in the curved surface of the roll body 6 c by recesses that are open on one side. The gullets 6′ to 6 m are substantially trapezoidal in shape relative to the rotational axis (see journal 17 a in FIG. 4). The angle a between tooth front 6 3 and tooth back 6 4 of adjacent teeth 6 1 and 6 2 is about from 60° to 70°, for example 65°.
  • According to FIG. 3, the spacing at the foot between adjacent teeth 6 1 and 6 2 in the circumferential direction B of the stripper roll 6 is denoted by reference letter a and the spacing of the tooth tips between adjacent teeth 6 1 and 6 2 is denoted by reference letter b. The circumferential direction B corresponds to the direction of the direction of rotation arrow 6 b.
  • The spacing between adjacent teeth 6 7 and 6 8 in the longitudinal direction C of the stripper roll 6 is denoted by reference letter c. The gaps 6* to 6 p between adjacent clothing teeth, for example 6 7 and 6 8, in the longitudinal direction C, which gaps are open on one side, are formed directly in the curved surface 6 d of the roll body 6 c by recesses that are open on one side. The gaps 6* to 6 p are rectangular or square in cross-section (not shown).
  • The clothing teeth 6 1 to 6 n arranged one next to the other—seen in the longitudinal direction C and in each case adjacent to a gap 6*—are arranged parallel to one another (see FIG. 3). Similarly, the gaps 6* to 6 p—in each case between two rows of clothing teeth 6 1 to 6 n—are arranged parallel to one another (see FIG. 3).
  • In accordance with FIG. 4 the stripper roll 6, in the region of each of its two end faces 6 e and 6 f (only 6 e is shown), has a journal 17 a and 17 b, respectively (only 17 a is shown). The clothing teeth 6 1 to 6 n, seen in the longitudinal direction C, are arranged helically relative to the rotational axis (represented by the journals 17 a, 17 b) of the stripper roll. Similarly, the gaps 6′ to 6 m (see FIG. 3) are arranged helically relative to the rotational axis in longitudinal direction C.
  • The one-piece (one-part) stripper roll 6 consists of an aluminium alloy. The clothing teeth 6 1 to 6 2, the gullets 6′ to 6 n and the gaps 6* to 6 p are produced, for example, by turning on a lathe, planing or the like.
  • The invention has been described using the example of a stripper roll 6. The invention can be applied in the same way to other rolls of a flat card or roller card, for example as a feed roll 1.

Claims (35)

1) Device on a flat card or roller card for cotton, synthetic fibres and the like, in which a rotatably mounted stripper roll is arranged between a doffer and nip rolls, which stripper roll strips fibre material from the doffer and delivers it to the nip rolls, wherein the stripper roll has a roll body which is provided with clothing teeth in the region of its curved surface, characterised in that the clothing teeth (6′ to 6 n) of the clothing (6 a) are formed directly on the curved surface (6 d) of the roll body (6 c), the roll body (6 c) and the clothing teeth (6 1 to 6 n) of the clothing (6 a) being of one-piece construction.
2) Device according to claim 1, characterised in that the gullets (6′ to 6 m) between adjacent clothing teeth (6 1 to 6 n) in the circumferential direction (B) of the stripper roll (6) are formed directly in the curved surface (6 d) of the roll body (6 c) by recesses that are open on one side.
3) Device according to claim 1 or 2, characterised in that the gaps (6* to 6 p) between adjacent clothing teeth (6 1 to 6 n) in the longitudinal direction (C) of the stripper roll (6) are formed directly in the curved surface (6 d) of the roll body (6 c) by recesses that are open on one side.
4) Device according to any one of claims 1 to 3, characterised in that the clothing teeth are formed directly from the roll body by a material-removing process.
5) Device according to any one of claims 1 to 4, characterised in that the clothing teeth are formed by a chip-removing process.
6) Device according to any one of claims 1 to 5, characterised in that the clothing teeth are milled directly out of the roll body.
7) Device according to any one of claims 1 to 6, characterised in that the clothing teeth are formed from the roll body by planing.
8) Device according to any one of claims 1 to 7, characterised in that the clothing teeth are formed from the roll body by turning.
9) Device according to any one of claims 1 to 8, characterised in that the clothing teeth are formed from the roll body by laser treatment.
10) Device according to any one of claims 1 to 9, characterised in that the gullets and the gaps between adjacent clothing teeth are formed from the roll body by a material-removing process, for example by a chip-removing process, milling, planing, turning, laser treatment.
11) Device according to any one of claims 1 to 10, characterised in that the gullets and the gaps between adjacent clothing teeth are formed by processing on a lathe.
12) Device according to any one of claims 1 to 11, characterised in that the clothing teeth are arranged helically relative to the rotational axis in the longitudinal direction.
13) Device according to any one of claims 1 to 12, characterised in that the clothing teeth are arranged helically relative to the rotational axis in the circumferential direction.
14) Device according to any one of claims 1 to 13, characterised in that recesses extend coaxially with respect to the rotational axis in the longitudinal direction.
15) Device according to any one of claims 1 to 14, characterised in that recesses extend parallel to the rotational axis in the longitudinal direction.
16) Device according to any one of claims 1 to 15, characterised in that recesses extend helically relative to the rotational axis in the longitudinal and circumferential directions.
17) Device according to any one of claims 1 to 16, characterised in that recesses each extend parallel to adjacent recesses in the circumferential direction.
18) Device according to any one of claims 1 to 17, characterised in that recesses extend helically relative to the rotational axis in the circumferential direction.
19) Device according to any one of claims 1 to 18, characterised in that the recesses taper in the radial direction—seen in cross-section through the roll body.
20) Device according to any one of claims 1 to 19, characterised in that the recesses taper in the direction of the rotational axis—seen in a plan view onto the roll body.
21) Device according to any one of claims 1 to 20, characterised in that the clothing teeth are formed by helical grooves applied to the outer wall of the roll body and by incisions which form the front face and the rear face of the clothing teeth.
22) Device according to any one of claims 1 to 21, characterised in that the recesses are substantially V-shaped parallel or helically relative to the rotational axis.
23) Device according to any one of claims 1 to 22, characterised in that the recesses are substantially trapezoidal in shape parallel or helically relative to the rotational axis—seen in the circumferential direction B.
24) Device according to any one of claims 1 to 23, characterised in that the angle a between the tooth front and the tooth back of adjacent teeth is about from 60° to 70°.
25) Device according to any one of claims 1 to 24, characterised in that the recesses—seen in the longitudinal direction C—are substantially square or rectangular in shape.
26) Device according to any one of claims 1 to 25, characterised in that the roll body is a solid cylinder.
27) Device according to any one of claims 1 to 26, characterised in that the roll body is a hollow cylinder.
28) Device according to any one of claims 1 to 27, characterised in that the roll body is formed from aluminium or an aluminium alloy.
29) Device according to any one of claims 1 to 28, characterised in that the roll body consists of steel.
30) Device according to any one of claims 1 to 29, characterised in that the roll body is deburred after the chip-removing process, for example after milling.
31) Device according to any one of claims 1 to 30, characterised in that the roll body is deburred by an acid bath.
32) Device according to any one of claims 1 to 31, characterised in that the deburred roll body is covered with a hard layer.
33) Device according to any one of claims 1 to 32, characterised in that the hard layer is a hard electrolytically oxidised aluminium.
34) Device on a flat card or roller card for cotton, synthetic fibres and the like, in which there is arranged a rotatably mounted roll which takes up and delivers fibre material, wherein the roll has a roll body that is provided with clothing teeth in the region of its curved surface, especially in accordance with any one of claims 1 to 33, characterised in that the clothing teeth are formed directly on the curved surface of the roll body, the roll body (6 c) and the clothing teeth (6 a to 6 c) of the clothing (6 a) being of one-piece construction.
35) Device according to claim 34, characterised in that the roll is a feed roll (1).
US14/913,238 2013-08-19 2014-03-20 Device on a carding machine for cotton, synthetic fibres or the like, having a rotatable strippiing roller Abandoned US20160201228A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102013013602.4 2013-08-19
DE102013013602.4A DE102013013602A1 (en) 2013-08-19 2013-08-19 Device on a card or carding machine for cotton, man-made fibers u. Like. With a rotatable stripper
PCT/EP2014/000759 WO2015024606A1 (en) 2013-08-19 2014-03-20 Device on a carding machine for cotton, synthetic fibres or the like, having a rotatable stripping roller

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US20160201228A1 true US20160201228A1 (en) 2016-07-14

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US14/913,238 Abandoned US20160201228A1 (en) 2013-08-19 2014-03-20 Device on a carding machine for cotton, synthetic fibres or the like, having a rotatable strippiing roller

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US (1) US20160201228A1 (en)
EP (1) EP3036362A1 (en)
CN (1) CN105408534A (en)
DE (1) DE102013013602A1 (en)
WO (1) WO2015024606A1 (en)

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