EP1676942B1 - Verfahren zur Wiederverwertung von nicht verarbeiteten Fasern in einer Karde und Karde ausgerüstet mit Mitteln zur Durchführung dieses Verfahrens - Google Patents

Verfahren zur Wiederverwertung von nicht verarbeiteten Fasern in einer Karde und Karde ausgerüstet mit Mitteln zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP1676942B1
EP1676942B1 EP20050370036 EP05370036A EP1676942B1 EP 1676942 B1 EP1676942 B1 EP 1676942B1 EP 20050370036 EP20050370036 EP 20050370036 EP 05370036 A EP05370036 A EP 05370036A EP 1676942 B1 EP1676942 B1 EP 1676942B1
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EP
European Patent Office
Prior art keywords
carding
card
cylinder
carding machine
fibers
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Application number
EP20050370036
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English (en)
French (fr)
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EP1676942A2 (de
EP1676942A3 (de
Inventor
Michel Descamps
Marc Brabant
Jacques Marais
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Asselin Thibeau SAS
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Asselin Thibeau SAS
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Publication of EP1676942A2 publication Critical patent/EP1676942A2/de
Publication of EP1676942A3 publication Critical patent/EP1676942A3/de
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Publication of EP1676942B1 publication Critical patent/EP1676942B1/de
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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
    • D01G15/32—Framework; Casings; Coverings
    • 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
    • D01G15/72—Arrangements for returning waste to be re-carded

Definitions

  • the present invention relates to the textile field and relates to a new solution for recycling fibers not worked in a card.
  • the invention is preferably applied to the recycling of fibers not worked in a card equipped with group (s) card (s) roller (s).
  • a card comprises in the usual manner at least one rotary carding cylinder, still commonly referred to as a main drum or a large drum, on the periphery of which carding members are mounted.
  • the fibers transported at the periphery of the carding cylinder are worked by the combined actions of the carding members and the peripheral lining of the carding cylinder (carding operation of the fibers).
  • carding members There are various types of carding members, the main ones being: roller carding units, carding mats, carding plate fixed carding members.
  • a roller carding unit generally comprises a roller commonly called “worker” associated with a “stripper” roller, sometimes sometimes called “sweeper”.
  • a carding cylinder is equipped on its periphery with several successive carding groups with rollers. Carding roller units are widely used in cardes for the production of nonwoven webs.
  • a carding belt comprises a conveyor belt which is mounted near the carding cylinder and which, in part of its path, partially follows the curve of the carding cylinder.
  • This band is equipped with carding fittings adapted to cooperate with the peripheral lining of the carding cylinder.
  • This type of carding organ is basically used in cotton cardes.
  • the fixed carding members are for example in the form of a fixed fairing (also commonly called “carding plate”) having a plurality of carding points fixed at the periphery of the carding cylinder.
  • a more or less weak portion of the fibers at the periphery of the carding cylinder is taken up, at a point situated downstream of the carding members, by one or several cylinders positioned downstream of the carding cylinder, while the residual portion of the fibers at the periphery of the carding cylinder is recycled by the carding cylinder to the carding members.
  • the card has a single carding cylinder.
  • the card may comprise several successive carding cylinders, each carding cylinder being equipped on its periphery with carding members for working the fibers.
  • FR 2,300,828 describes a device and a method for recovering by suction textile materials released by a rope machine.
  • the main object of the present invention is to propose a new technical solution which improves the operation of a card in that it makes it possible to overcome the drawbacks arising from the presence of non-worked flying fibers which escape from the carding members of a card. card.
  • a more particular object of the invention is to propose a new technical solution to improve the operation of a card equipped with group (s) card (s) roller (s).
  • the aforementioned main objective is achieved by the invention which relates to a method of recycling fibers in a card comprising at least one carding cylinder and carding members mounted at the periphery of the carding cylinder.
  • the card has a covering covering the carding members, and a recirculating air stream is created which circulates under this cowling above and close to the carding members, so as to bring back the non-worked fibers. upstream of the carding cylinder.
  • Another object of the invention is a card comprising at least one carding cylinder and carding members mounted at the periphery of the carding cylinder.
  • the card comprises means for recycling the unworked fibers, which comprise a cowling covering the carding members, and which are designed to create a flow of air flowing under this cowling over and near the carding members. carding members in the upstream direction of the carding cylinder.
  • upstream and downstream are defined with respect to the direction of progression of the fibers in the card, that is to say in other words with respect to the direction of rotation of the carding cylinders of the card.
  • the invention is applied to a card whose carding members comprise one or more roller carding units.
  • FIG. 1 shows a double exit card for producing nonwovens, and more particularly nonwovens based on synthetic fibers of the polypropylene, polyethylene, ... and / or fiber type. natural cotton type, and / or viscose type artificial fibers, ...
  • the card of FIG. 1 comprises an input E of a card equipped with means 1 for supplying fibers which are constituted in the illustrated example of a trough 1a, a food roll 1b, and a breaker cylinder 1c.
  • a sheet of fibers is introduced continuously (by means not shown) at the entrance E of the card between the trough 1a and the food roll 1b.
  • the breaker cylinder 1c feeds into fibers a first rotary carding cylinder 2, which is more commonly known as a front end, and which is equipped on its periphery with a carding insert (in the form of spikes). or any other equivalent means) allowing it to take up the fibers of the periphery of the breaker cylinder.
  • a carding insert in the form of spikes. or any other equivalent means
  • carding groups 3 with successive rollers are mounted at the periphery and in the upper part of the front end 2.
  • Each carding unit 3 is composed of a sweeping roll 3a and a working roll 3b.
  • Each carding unit 3 cooperates with the front end 2 and has the function of working the fibers taken in the lining of the front end 2 so as to individualize and parallelize them. Carding groups 3 could be replaced by any other equivalent means fulfilling the same function.
  • the card Downstream of the limber 2, the card has a transfer cylinder 4, also commonly called “communicator”, which allows to take all the fibers at the periphery of the front limb 2 and transfer them to a second carding cylinder 5, still commonly called “big drum”.
  • this second carding cylinder 5 is coated with carding lining and comparable to the first carding cylinder 2 cooperates with roller carding units 3.
  • each carding outlet comprising for example a doffer cylinder 6, a detaching cylinder 7, and a strip of transport 8.
  • the fibers are worked and progress in the card at the periphery of the rolls 2, 4 and 5, to the output cylinders 6 (direction of progression of the worked fibers shown schematically by the arrow D in FIG. 1) .
  • the card is equipped with a covering means 10, which in the illustrated example comprises a curved top wall 10a and two substantially planar and vertical side walls 10b.
  • This covering 10 may, depending on the case, be supported on the ground by the carrier frame 9 or be supported on the ground by separate support means of the carrier frame 9.
  • the card is also equipped with substantially vertical lateral flanges 12 which are supported by the frame 9 and are mounted on either side of the rolls of the card.
  • These lateral flanges 12 form with the upper wall 10a of the covering 10 an upper cowling 13, which covers the carding cylinders 2 and 5 of the card in the upper part, the carding groups 3 with rollers being entirely housed inside this cowling.
  • the lateral flanges 12 have not been shown in FIGS. 1 and 2, and are only shown in FIGS. 3 and 4.
  • the cowling 13 covers the card from its input E (including the fiber supply means 1a, 1b and 1c) to the output rollers 6.
  • the The cowling 13 could stop at the last carding group 3 of the card, the important thing being that the cowling 13 covers the carding groups 3 that is to be protected by a recycling air flow of the non-worked fibers.
  • the cowling 13 delimits above the carding groups 3 of the card a corridor 13a of width L ( Figure 4) substantially corresponding to the length of the carding cylinders 2 and 5. This corridor 13a allows channel the recirculating air stream to the right of the carding rolls 2 and 5, and close to the carding groups 3.
  • the downstream side face 10c of the cover 10 is open such that an air intake A under the cowling 13 is formed downstream of the last carding unit 3 of the carding cylinder 5.
  • This admission d Air A extends over the entire width (L) of the cowling 13 ( Figure 4).
  • the upstream end 10d of the cover 10 is equipped with a suction box 11 comprising an internal air duct 11a which extends substantially over the entire width of the card, and which communicates with openings air intake A 'formed in a front wall 11 b of the suction box 11.
  • These air intake openings A' open below the cowling 13 and are distributed over the width (L) of the cowling 13.
  • all or part of the intake openings A 'could be replaced by a longitudinal slot or equivalent.
  • the suction box 11 has a discharge opening A "which communicates with the inner conduit 11a, and which is connected to a fan (not shown).
  • the aforementioned fan In operation of the card, the aforementioned fan is turned on, and sucks continuously under the cowling 13 of the air which penetrates inside the inner pipe 11a of the suction box 11 via the inlet openings A ', and which is discharged through the discharge opening A' towards the intake of the fan.This air is discharged continuously by the fan in the open air outside the cowling 13. This suction generates the circulation, under the cowling 13 and over substantially the entire length of the carding rollers [width (L)], a stream of air recycling fibers which is shown schematically in the figures attached by arrows F.
  • This flow of recirculation air F circulates under the cowling 13 forcibly and continuously near the carding groups 3, from the inlet A of the cowling 13 downstream of the main carding roll 5 to the suction box 11 located at the cardboard inlet E, upstream of the carding cylinder 2.
  • This recirculating air flow F is therefore oriented in the direction opposite to the direction D of progression of the fibers worked at the periphery of the rolls. .
  • the non-worked flying fibers which are ejected from the rolls of the carding groups 3 are driven under the cowling 13 by the recirculating air flow F to the inlet E of the card, upstream of the first carding cylinder 2.
  • These fibers are then taken up by the feed means 1 at the input of the card and are reintroduced, at the periphery of the first carding cylinder 2, by the breaker cylinder 1c, with the other fibers from the entrance tablecloth.
  • These fibers are thus advantageously recycled into the card, and no longer interfere with the operation of the card, in contrast with a card that would be devoid of the recirculation airflow F.
  • the card is equipped with a single upstream suction box 11 for the creation of the recirculating air flow F.
  • a single upstream suction box 11 for the creation of the recirculating air flow F.
  • FIG. 5 shows another embodiment of the invention in which, for the creation of the recirculating air flow F, the card is equipped, in addition to the suction box 11, with two boxes. additional suction 11 'and 11 "which are mounted on the cowling 13, downstream of the box 11. More particularly, in this embodiment, the suction box 11' is positioned in the area between the cylinder of 5 and the drawbar 2, the suction box 11 "is positioned downstream of the main carding cylinder 5. In a manner comparable to that described for the suction box 11, the boxes of 11 'and 11 "extend, in the direction perpendicular to the plane of Figure 5, preferably substantially over the entire width of the card (that is to say the length of the rolls of the card).
  • a recycling stream F of the invention is particularly advantageous for cards which are equipped with group (s) card (s) roller (s) as the card of the accompanying figures, because the phenomenon of fiber ejection Unworked is important for this type of card.
  • the invention is not limited to this type of card, but can also be applied to cards equipped with other types of carding members (fixed or mobile) for which the amount of non-worked flying fibers is certainly less important, but not negligible.

Claims (9)

  1. Verfahren zur Wiederverwertung von Fasern in einer Karde, die zumindest eine Kardierwalze (2; 5) und am Umfang der Kardierwalze angebrachte Kardierglieder (3) aufweist, dadurch gekennzeichnet, dass die Karde eine Abdeckhaube (13) aufweist, welche die Kardierglieder (3) der Karde abdeckt, und dass ein Wederverwertungs-Luftstrom (F) erzeugt wird, der unter dieser Abdeckhaube (13), über den Kardiergliedern (3) und nahe bei diesen so zirkuliert, dass die nicht verarbeiteten Fasern stromaufwärts der Kardierwalze zurückgeführt werden.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Wiederverwertungs-Luftstrom (F) durch Ansaugen erzeugt wird.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass mittels des Wiederverwertungs-Luftstroms (F) die nicht verarbeiteten Fasern zum Einlass (E) der Karde zurückgeführt werden und diese Fasern am Umfang einer Kardierwalze (2) der Karde wiedereingebracht werden.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zumindest eines der Kardierglieder eine Rollenkardiergruppe (3) ist.
  5. Karde mit zumindest einer Kardierwalze und am Umfang der Kardierwalze angebrachten Kardiergliedern, dadurch gekennzeichnet, dass sie Mittel (10, 11, 12, 13) zur Wiederverwertung der nicht verarbeiteten Fasern enthält, die eine Abdeckhaube (13) aufweisen, welche die Kardierglieder (3) der Karde abdeckt, und die so ausgelegt sind, dass sie einen Luftstrom (F) erzeugen, der unter dieser Abdeckhaube (13) über den Kardiergliedern (3) nahe bei diesen in Richtung stromaufwärts der Kardierwalze zirkuliert.
  6. Karde nach Anspruch 5, dadurch gekennzeichnet, dass zumindest eines der Kardierglieder eine Rollenkardiergruppe (3) ist.
  7. Karde nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, dass die Mittel zur Wiederverwertung der nicht verarbeiteten Fasern Ansaugmittel (11) aufweisen.
  8. Karde nach Anspruch 7, dadurch gekennzeichnet, dass die Ansaugmittel am Einlass (E) der Karde angeordnet sind.
  9. Karde nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass mit den Mitteln zur Wiederverwertung der nicht verarbeiteten Fasern ein Wiederverwertungs-Luftstrom (F) erzeugbar ist, der unter der Abdeckhaube (13) von stromabwärts der letzten Kardierwalze (5) zum Einlass (E) der Karde zirkuliert.
EP20050370036 2004-12-30 2005-11-17 Verfahren zur Wiederverwertung von nicht verarbeiteten Fasern in einer Karde und Karde ausgerüstet mit Mitteln zur Durchführung dieses Verfahrens Active EP1676942B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0414063A FR2880359B1 (fr) 2004-12-30 2004-12-30 Procede de recyclage de fibres non travaillees dans une carde, et carde equipee de moyens pour la mise en oeuvre de ce procede

Publications (3)

Publication Number Publication Date
EP1676942A2 EP1676942A2 (de) 2006-07-05
EP1676942A3 EP1676942A3 (de) 2006-12-27
EP1676942B1 true EP1676942B1 (de) 2007-07-18

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Application Number Title Priority Date Filing Date
EP20050370036 Active EP1676942B1 (de) 2004-12-30 2005-11-17 Verfahren zur Wiederverwertung von nicht verarbeiteten Fasern in einer Karde und Karde ausgerüstet mit Mitteln zur Durchführung dieses Verfahrens

Country Status (5)

Country Link
EP (1) EP1676942B1 (de)
CN (1) CN1807717B (de)
DE (1) DE602005001684T2 (de)
ES (1) ES2287888T3 (de)
FR (1) FR2880359B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102677232B (zh) * 2012-05-08 2014-06-18 青岛东佳纺机（集团）有限公司 羊绒分梳机
CN105256411B (zh) * 2015-11-05 2017-06-06 常熟市飞龙无纺机械有限公司 非织造纤维高速杂乱梳理机
CN106521724A (zh) * 2016-12-30 2017-03-22 河北宇腾羊绒制品有限公司 一种羊绒梳理除杂装置
CN107313134B (zh) * 2017-08-30 2023-07-28 恒天重工股份有限公司 一种适用于高速高产梳理机的吸风系统
CN113046866A (zh) * 2021-05-07 2021-06-29 常熟市飞龙无纺机械有限公司 纯棉罗拉式梳理机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039150A (en) * 1960-05-12 1962-06-19 Windle Engineering Company Inc Recovery apparatus for carding machines
GB884245A (en) * 1960-07-20 1961-12-13 Fritz Streiff Improvements in textile carding machines
FR2300828A1 (fr) * 1975-02-14 1976-09-10 Devauze Ets Pr
CN1062935A (zh) * 1990-12-29 1992-07-22 诸城市第三棉油加工厂 土废绒回收方法及设备
DE10259475A1 (de) * 2002-12-19 2004-07-01 Trützschler GmbH & Co KG Vorrichtung an einer Spinnereivorbereitungsmaschine, insbes. Karde, Reiniger o. dgl., mit einer Maschinenverkleidung

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Publication number Publication date
FR2880359A1 (fr) 2006-07-07
FR2880359B1 (fr) 2007-05-18
EP1676942A2 (de) 2006-07-05
ES2287888T3 (es) 2007-12-16
DE602005001684T2 (de) 2008-04-10
EP1676942A3 (de) 2006-12-27
CN1807717B (zh) 2010-12-08
DE602005001684D1 (de) 2007-08-30
CN1807717A (zh) 2006-07-26

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