WO2023202805A1 - Machine de cardage - Google Patents

Machine de cardage Download PDF

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Publication number
WO2023202805A1
WO2023202805A1 PCT/EP2023/051539 EP2023051539W WO2023202805A1 WO 2023202805 A1 WO2023202805 A1 WO 2023202805A1 EP 2023051539 W EP2023051539 W EP 2023051539W WO 2023202805 A1 WO2023202805 A1 WO 2023202805A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
card
designed
fiber
fibers
Prior art date
Application number
PCT/EP2023/051539
Other languages
German (de)
English (en)
Inventor
Ralf Helbig
Alexander KONNEN
Original Assignee
Trützschler Group SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trützschler Group SE filed Critical Trützschler Group SE
Publication of WO2023202805A1 publication Critical patent/WO2023202805A1/fr

Links

Classifications

    • 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
    • D01G15/76—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area
    • D01G15/763—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area by suction or blowing
    • 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
    • D01G15/76—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area
    • D01G15/82—Arrangements for confining or removing dust, fly or the like
    • D01G15/825—Arrangements for confining or removing dust, fly or the like by suction or blowing

Definitions

  • the present invention relates to a card according to the preamble of claim 1, with an inlet side for fiber flakes, the card being designed to feed the fiber flakes to a rotating drum by means of at least one licker-in.
  • the fiber flakes are broken up, aligned and cleaned down to the individual fibers between fixed carding elements and rotating flat bars.
  • the resulting fibrous web is transferred from the drum to a recipient, which is followed by a device for converting the fibrous web into a sliver.
  • suction devices are known on revolving flat cards, in which waste and short fibers are sucked out at the workstations.
  • the workstations include the licker-in rollers, the carding surfaces on the drum, the revolving flat, as well as the doffer and the areas of sliver formation.
  • the suction devices can be designed as tubular suction hoods, which usually extend over the working width of the card and are placed under pressure via a central suction line of the spinning preparation.
  • the waste is divided into predominantly non-fibrous waste such as dust, shell parts and trash and fibrous waste.
  • the waste in the entrance area of the card in the direction of the material flow, i.e.
  • non-fiber-containing waste in the area of the licker-in, contains more dirty and heavy non-fiber components such as shell residues, dust and trash.
  • the suction devices on the rotating cover and on the take-off side mainly separate clean, fibrous waste, which the spinning mill operator would like to reuse.
  • the predominantly non-fiber-containing waste can in principle be further processed and reused, although this requires a lot of effort with little benefit and is therefore not used by most operators of spinning mill preparation.
  • These predominantly non-fiber-containing wastes are referred to below as non-recyclable fibers and fiber components in order to distinguish this from usable fibers and fiber components without further explanation.
  • the waste collected in the collecting box is emptied by temporarily controlling a valve via a transfer line connecting the collecting box with the collecting line and the collecting line, the valve maintains a reduced negative pressure at the cleaning points while the collection box is being emptied.
  • the pressure at all cleaning points on the master cylinder is reduced to the same extent, and only for a short time. In contrast, the cleaning areas are almost exclusively vacuumed.
  • the large total amount of air that is used for waste disposal is therefore disadvantageous. This problem is even greater when the number of cleaning points increases as production and quality requirements increase. The amount of air required to dispose of the waste continues to increase and leads to high energy consumption and thus higher operating costs.
  • DE10143671 discloses a card with a suction device in which groups of suction points are combined. These groups of extraction points can either be partially vacuumed or fully vacuumed, which means the total amount of air required can be reduced. With partial suction, the required waste can be sucked out of the workplace. However, partial suction is not sufficient for suction into the central suction point of the spinning mill preparation. For this purpose, the system periodically switches from partial suction to full suction and back in order to completely remove the waste from the card.
  • the invention is based on the object of developing a card in such a way that the suction power is reduced and an efficient separation between the predominantly cleaned dirt, i.e. the non-usable fibers and fiber components and the usable fibers.
  • the invention relates to a card with an inlet side for fiber flakes, the card being designed to feed the fiber flakes to a rotating drum by means of at least one licker-in.
  • the fiber flakes are broken up, aligned and cleaned down to the individual fibers between fixed carding elements and rotating flat bars.
  • the resulting fibrous web is transferred from the drum to a recipient, which is followed by a device for converting the fibrous web into a sliver.
  • the invention includes the technical teaching that the card has a first and a second suction device, which are designed to completely suck out the usable and non-usable fibers and fiber components separately from one another at all suctionable work points of the card.
  • the spinning mill operators can completely recycle their usable fibers and fiber components and feed them to an upstream blowroom machine, for example, separately from the non-recyclable fibers and fiber components.
  • the usable and non-usable fibers and fiber components are completely separated at all vacuumed work points on the card.
  • spinning mill preparation operators can recycle up to 3.5% of the total amount of fiber processed, thereby reducing costs and increasing productivity.
  • the percentages used here refer to a measurement with Turkish cotton, which is processed into a sliver at a speed of 170m/min and a card productivity of 50.2kg/h.
  • the transfer points between the fibers from one roller to the next, the carding points between the carding elements and the drum, the separation elements such as knives or edges, and the cleaning devices on the revolving cover and on the stripping roller are referred to as work points. Extraction at these workstations is usually carried out using extraction hoods that extend across the working width of the card.
  • the first suction device is designed to suck at least the usable fibers and fiber components from the suctionable work points in the main carding zone, the secondary carding zone and from the area of the customer, almost 98% of the All usable fibers and fiber components that occur on the card after the licker-in and after the pre-carding zone are recycled.
  • the floor under the drum and the funnel for forming the sliver after the doffer can also be equipped with a suction system and the usable fibers and fiber components can be sucked out here.
  • the accumulation of fibers is very low in relation to the main carding zone, post-carding zone and the cleaning roller on the doffer's stripping roller.
  • not every type of card has a removal device for the floor under the drum.
  • the first suction device has at least the suction cleaning device, the suction revolving cover, the suction re-carding zone and the suction stripper roller, whereby the suction devices can be designed in the form of hoods which extend over the entire working width of the card.
  • the first suction device can include the suction funnel and/or the suction drum base if the card design provides for these work stations.
  • the second suction device is designed to suck out the non-usable fibers and fiber components from the suctionable work stations in the area of the licker-in and the pre-carding zone. This means, for example, that a total of up to 5.6% of the total amount of fiber processed can be vacuumed away as dust, shell parts and trash, so that almost exclusively usable fibers and fiber components are produced at the subsequent workstations.
  • the total percentage of usable and non-usable fibers and fiber components that are extracted and separated from one another depends very much on the card setting and the cotton quality processed.
  • the second suction device has at least the suction of the upper pre-carding zone, the suction of the pre-carding zone and the suction of the licker-in.
  • These suction systems can also be designed as suction hoods that extend over the entire working width of the card.
  • the first and second suction devices can be designed to be fully vacuumed continuously with a negative pressure of 500 - 800 Pascal. With this full suction, in contrast to the state of the art, the work areas are continuously cleaned.
  • first and second suction devices are designed to direct the extracted fibers and non-usable fiber components either to separate collecting devices, filters or condensers or to a common one Using a collecting device, filter or condenser, the spinning mill operator can decide flexibly whether he would like to reuse the usable fibers and fiber components.
  • the first suction device is advantageously designed to feed the usable fibers and fiber components to a mixer or cleaner in the cleaning room upstream of the card. This creates a cycle in which the separated usable fibers are fed directly for further processing. Overall, the amount of waste is reduced.
  • Figure 1 a side view of a schematically shown card according to the
  • FIG. 2 a schematically shown card with the card according to the invention
  • Fig. 1 shows a card according to the prior art, in which fiber flakes are guided via a shaft to a feed roller 1, a feed table 2, via several licker-ins 3a, 3b, 3c, to the drum 4 or the reel.
  • the fibers of the fiber flakes are parallelized and cleaned by means of fixed and rotating carding elements 14, 17.
  • the pre-carding zone is formed by the fixed carding elements 14 between the lickers 3a - 3c and the revolving cover 16.
  • the main carding zone is formed by the circumferential flat bars 17 of the revolving flat 16.
  • the re-carding zone is formed by the fixed carding elements 14, which are arranged between the revolving cover 16 and the doffer 5.
  • suction hoods 18 are arranged between the fixed carding elements 14 and interact with knives, clothing or other separating elements.
  • the resulting fibrous web is subsequently conveyed via a pickup 5, a stripping roller 6 and several squeezing rollers 8, 9 to a fleece guiding element 10, which forms the fibrous web with a funnel 11 into a sliver that is fed via take-off rollers 12, 13 to a subsequent processing machine or a Pot 15 hands over.
  • the removal of the fibers from the customer 5 is supported by a fleece guide profile 7, which is arranged below the stripping roller 6.
  • FIG. 2 shows a side view of the working elements of the card with two separate suction devices.
  • a first suction device 20 only sucks fibrous and reusable waste from the card's workstations. It includes a suction 20a on the flat strip hood, i.e. the cleaning device 19, with which the fibers are removed from the circumferential flat bars 17.
  • a further suction revolving cover 20b is arranged in the area of the revolving cover 16 located opposite the cleaning device 19 on the deflection device for the flat bars 17 before the fittings of the Flat bars 17 interact again with the clothing of the drum 4.
  • further suction devices 20c are arranged, which remove the fibers from the suction hoods 18.
  • the fibers of the cleaning roller 6a which cleans the stripping roller 6 of the customer 5, are removed.
  • a further suction drum base 20f can be arranged, with which the fibers below the drum 4 are sucked out.
  • a suction pipe funnel 20e is designed to connect and suck off the area of the funnel 11 with a pipe (not shown).
  • the first suction 20 is designed to suck the fibers from the area of the main carding zone, i.e. the circumferential revolving cover 16, the secondary carding zone with the fixed carding elements 14, the area of the doffer 4 and the drum base 20f, and to supply them separately for further use.
  • the cross section of the first suction 20 increases continuously from the area of the drum base to above the revolving lid 16.
  • the second suction 21 is designed to extract predominantly non-usable fiber components, i.e. dust, shell parts and trash, and is operated or vacuumed independently of the first suction 20. It exclusively includes the areas of the licker-in 3a-3c with a suction licker-in 21c, the pre-carding zone with at least one or more suction pre-carding zone 21b and the suction upper pre-carding zone 21a.
  • the second suction 21 is operated with an exhaust air volume of 1900m 3 /h, with a total of 5.6% of the total processed fiber amount of 100kg/h from the suction points 21a, 21b and 21c as non-usable fibers and fiber components in the form of Dust, shell parts and trash are vacuumed out.
  • the first suction device 20 is simultaneously operated with an exhaust air volume of 2300m 3 /h, with a total of 3.5% "clean" waste of the total processed fiber amount of 100kg/h being sucked out as reusable fibers separately from the second suction device 21.
  • Around 2% of the card production goes to the suction cleaning device 20a, and 1.5% of the card production goes to the suction of the post-carding zone 20c and the suction of the stripper roller 20d.
  • the amount of fibers from the suction drum base 20f and the area of the funnel 20e are negligibly small.
  • the percentages used here refer to a measurement with Turkish cotton on a TC23 card, in which the cotton flakes are processed into a sliver at a speed of 170m/min and a card productivity of 50.2kg/h. Overall, the waste amounted to 9.3% of the amount of fiber processed.
  • Both suction devices 20, 21 are operated in conjunction with the central exhaust air duct of the spinning preparation with a negative pressure of 500-800 Pascal. This means that there is continuous full suction at all extraction points.
  • the air flows are Suction devices 20, 21 are fed to separate filters or condensers.
  • the usable fibers of the suction device 20 can, for example, be fed to blowroom machines in the preparation of the spinning mill, such as mixers or cleaners, or can be collected separately and further used.
  • the invention provides for separate extraction between all usable fibers and fiber components and all non-usable fibers and fiber components, whereby the customer can decide whether he would like to return the usable fibers and fiber components to the spinning preparation process. If this is omitted, provision is made to connect the first suction device 20 to the second suction device 21 by connecting the funnels of the suction devices 20, 21 and leading them together with the suction pipe of the spinning preparation to a common filter.

Landscapes

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

Abstract

L'invention concerne une machine de cardage comprenant un côté d'admission de flocs de fibres, la machine de cardage étant conçue pour alimenter un tambour rotatif (4) en flocs de fibres au moyen d'au moins un cylindre briseur (3a, 3b, 3c), les flocs de fibres étant cassés pour former la fibre individuelle, alignés et nettoyés entre des éléments de cardage fixes et des barres plates de circulation (17) et le tambour (4), et la bande fibreuse ainsi obtenue pouvant être transférée depuis le tambour (4) sur un peigneur (5), en aval duquel est agencé un dispositif de conversion de la bande fibreuse en un ruban. L'invention est caractérisée en ce qu'un premier et un second dispositif d'aspiration (20, 21) sont conçus pour aspirer complètement les fibres et les constituants de fibres utilisables et non utilisables séparément les uns des autres au niveau de toutes les stations de travail pouvant être aspirées de la machine de cardage.
PCT/EP2023/051539 2022-04-21 2023-01-23 Machine de cardage WO2023202805A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022109606.8 2022-04-21
DE102022109606.8A DE102022109606A1 (de) 2022-04-21 2022-04-21 Karde

Publications (1)

Publication Number Publication Date
WO2023202805A1 true WO2023202805A1 (fr) 2023-10-26

Family

ID=85108853

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/051539 WO2023202805A1 (fr) 2022-04-21 2023-01-23 Machine de cardage

Country Status (2)

Country Link
DE (1) DE102022109606A1 (fr)
WO (1) WO2023202805A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1258682A (fr) * 1960-06-02 1961-04-14 Procédé et dispositif pour le nettoyage des cardes
JPS514331A (en) * 1974-07-01 1976-01-14 Toyoda Automatic Loom Works Somenkiniokeru chosenikaishusochi
EP0750059A1 (fr) 1995-06-19 1996-12-27 Maschinenfabrik Rieter Ag Procédé de commande d'une machine de cardage et appareil d'aspiration pour la mise en oeuvre de ce procédé
DE10143671A1 (de) 2001-09-06 2003-03-27 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde, Reinigungsmaschine o.dgl. für Textilmaterial
CH695617A5 (de) * 2000-12-11 2006-07-14 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde, bei der unterhalb einer Trommel zwischen einem Abnehmer und einem Vorreisser Abdeckelemente angeordnet sind.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1258682A (fr) * 1960-06-02 1961-04-14 Procédé et dispositif pour le nettoyage des cardes
JPS514331A (en) * 1974-07-01 1976-01-14 Toyoda Automatic Loom Works Somenkiniokeru chosenikaishusochi
EP0750059A1 (fr) 1995-06-19 1996-12-27 Maschinenfabrik Rieter Ag Procédé de commande d'une machine de cardage et appareil d'aspiration pour la mise en oeuvre de ce procédé
CH695617A5 (de) * 2000-12-11 2006-07-14 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde, bei der unterhalb einer Trommel zwischen einem Abnehmer und einem Vorreisser Abdeckelemente angeordnet sind.
DE10143671A1 (de) 2001-09-06 2003-03-27 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde, Reinigungsmaschine o.dgl. für Textilmaterial

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Publication number Publication date
DE102022109606A1 (de) 2023-10-26

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