EP0366692A1 - Procede d'elimination des dechets de cardes de coton, et carde de coton - Google Patents

Procede d'elimination des dechets de cardes de coton, et carde de coton

Info

Publication number
EP0366692A1
EP0366692A1 EP19880905779 EP88905779A EP0366692A1 EP 0366692 A1 EP0366692 A1 EP 0366692A1 EP 19880905779 EP19880905779 EP 19880905779 EP 88905779 A EP88905779 A EP 88905779A EP 0366692 A1 EP0366692 A1 EP 0366692A1
Authority
EP
European Patent Office
Prior art keywords
drum
air
collector
guide surface
distance
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP19880905779
Other languages
German (de)
English (en)
Inventor
Sven-Gunnar Jacobson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hollingsworth GmbH
Original Assignee
Hollingsworth GmbH
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 Hollingsworth GmbH filed Critical Hollingsworth GmbH
Publication of EP0366692A1 publication Critical patent/EP0366692A1/fr
Ceased legal-status Critical Current

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
    • D01G15/80—Arrangements for stripping cylinders or rollers
    • D01G15/805—Arrangements for stripping cylinders or rollers by suction or blowing

Definitions

  • the invention relates to a method for separating waste from a cotton card according to the preamble of claim 1 and a cotton card to carry out this method.
  • a dirt separator for a card is known (DE-PS 30 34 036), which is arranged directly in front of the card collector and has a knife blade which points at an adjustable distance from the direction of rotation of the drum and with a circumferential distance of one the knife blade lying at a slight constant radial distance from the drum is arranged, and furthermore has a foot surface adjoining the knife blade in the direction of rotation of the drum and a suction chamber covering the gap between the plate and the knife blade, the foot surface being covered with a sawtooth wire fitting is.
  • this known dirt separator is not to separate short fibers, but only to separate them of dirt particles, also called trash, such as shell residues, other dirt particles and dust, which still remain in the fibers after carding, and, if properly adjusted for dirt separation, tends to damage the fibers.
  • the following processes take place with this dirt separator.
  • the cover plate lying in the circumferential distance in front of the knife blade must have a very small radial distance from the fitting of the drum, since otherwise the fibers in the fitting of the drum come to a relatively large extent under the cover plate from the fitting and then when they are at a small circumferential distance Arrive from this cover plate arranged knife blade, strike against this knife blade and are thereby exposed to considerable risk of damage.
  • the suction chamber which completely covers the gap between the cover plate and the knife blade and seals against the circumference of the drum, must exert very strong suction so that it does not clog the very narrow gap between the knife blade and the Drum fitting comes.
  • the strong suction is also necessary to achieve a reasonably effective dirt separation.
  • the suction is therefore significantly involved in the dirt separation. This strong suction costs a lot of energy. Large amounts of air are also sucked out of the gaps between the clothing spirally drawn onto the drum, which forms the fitting of the drum, due to the strong suction of the suction chamber, which air can no longer be quickly replaced up to the customer, because the scope of the Drums from the knife blade to the customer are usually closed off with covers to the outside.
  • Air deficiency occurs in this area of the reel compared to the suction chamber as far as the customer due to the strong suction of air, which can adversely affect the fiber transition from the reel to the customer.
  • the distances between the cover plate and the knife blade from the reel must also be set extremely carefully with very small tolerances for the dirt separation.
  • the strong suction always unavoidably causes that it also lifts the fibers out of the fitting of the drum more or less, so that their striking against the knife blade thereby after inevitably reinforced and thus the risk of fiber damage is increased even further.
  • This separator only serves to separate dirt.
  • this method according to the invention can also be used to separate very short fibers, the separation of which is desirable for spinning technology reasons, in particular very short fibers with lengths of a few millimeters if the fiber material in question contains such short fibers.
  • the fiber material can be any fiber material act as it has always been carded on the so-called cotton cards. So it can be both cotton fibers and mixtures of cotton fibers with other fibers as well as fiber material from fibers that are not cotton fibers, which are of such lengths that they can also be carded on the cotton card.
  • the dirt and very short fibers can be separated out just as well without an air suction device as if, which is also possible, an air suction device to the interior of the collector for suctioning off the separated ones short fibers and dirt is provided.
  • the air suction on the separator caused by the air suction device then only has the task of continuously removing the separated very short fibers and the dirt from the collector of the separator. If necessary. this can also be done in another suitable manner, for example by blowing it off using at least one blown air jet or discharging it by means of a conveyor belt and collecting it in a collecting space and, for example, manually removing it from time to time or the like, or possibly also by means of the passage in air flowing into the collector.
  • a cover plate in front of the front edge of the collector at a distance from it that is greater than the distance of the air guide surface from this front edge, in the vicinity of the air guide surface, a cover plate preferably overlapping with the air guide surface in the circumferential direction of the drum in a small, preferably constant
  • cover plate it is expedient that it has a relatively large distance from the front edge of the collector, which is considerably larger than the distance of the air guiding surface from this front edge, preferably at least 2 cm, particularly advantageously 3 to 10 cm . At this distance, however, it must be ensured that it is large enough that the drum from the area surrounding the card can suck enough air into the air gap for the separator to work.
  • the distance between the front edge of the collector and the fitting of the drum can be at least 0.1 mm, preferably at least 0.2 mm and preferably at most 1 mm in the cotton card according to the invention. Distances of approximately 0.2 to 0.8 mm are particularly favorable. In some cases, larger or smaller distances can also be provided.
  • the smallest distance of the air guide surface from the fitting of the drum which is preferably provided at its stro downward end, can be less than, equal to or preferably greater than the distance of the front edge of the collector from the fitting and can preferably be at least 0.4 mm and / or preferably at most 10 mm, particularly Appropriately approx. -o, 5 to 7 mm, in particular approx. 2 to 5 mm. In some cases, this distance can also be smaller or larger.
  • the width measured in the circumferential direction of the drum can preferably be at least 3 mm and / or preferably a maximum of 40 mm, particularly advantageously 4 to 30 mm, but in some cases it can also be smaller or larger.
  • the radial distance of the upstream end of the air guide surface from the drum fitting can be expediently larger, preferably at least 1.5 times, particularly advantageously at least 3 times as large as the smallest radial distance of the air guide surface from the drum fitting.
  • the distance from the front edge of the collector to the drum, i.e. from its fitting in the invention does not require very tight tolerances, it is also not necessary to provide this front edge adjustable, but it can be fixed at a certain distance from the card manufacturer, which then remains constant during the lifetime of the set in question. If, however, the set forming its fitting on the drum is changed, the collector must be removed anyway and the front edge must then be re-adjusted to the previous or another desired distance from the fitting.
  • the setting need not be particularly precise because, as mentioned, the invention permits large tolerances in the distance between this front edge and the fitting of the drum without adversely affecting the operation of the separator.
  • the rotating drum causes air coming from the air in the machine room in question to be sucked into the space between the air guiding surface and it. At the downstream end or another tear-off edge of the air guiding surface, this air flow is torn off, with the result of the generation of turbulence, which is presumably due to the detachment of dirt and also of very short fibers from the
  • the separator according to the invention is also characterized in that it can separate short fibers and short fiber residues, as well as dirt, but longer fibers . practically does not deposit.
  • the air sucked in by the drum through its rotation through the air gap - which can preferably be accelerated in the air gap by appropriate tapering of the air gap - in front of the front edge of the collector and can at least partly, preferably for the most part through the passage in flow in the collector, from which it can then flow out through at least one outlet opening, which can preferably also serve to discharge the waste that has entered it.
  • the distance between the front edge of the collector and the drum is smaller, preferably considerably smaller than the smallest distance between the air guiding surface and the drum. This can make the amount of air / time flowing through the passage into the collector particularly large. It is conceivable that in some cases this air can also remove the waste from the collector.
  • the collector is connected to an air extraction device, this can extract the air that has flowed into the collector through the passage. If the collector is not connected to an air suction device, it likewise has at least one air outlet opening, for example at one or both axial longitudinal ends and / or on the circumference, through which the air flowing into it through the passage can flow out again.
  • FIG. 1 is a schematic side view of a cotton card with a separator according to the invention
  • FIG. 2 shows an enlarged, sectioned section of the card with the separator according to FIG. 1, the separator according to FIG. 2 being essentially a scale drawing of the separator of a test card on which tests for testing the separator took place,
  • FIGS. 2 and 3B each shows a reduced representation of FIGS. 2 and 3B, however the air guiding part in each case is designed somewhat differently than in FIG. 2,
  • Fig. 4 is a not to scale, schematic
  • FIGS. 1 and 2 Top view of the separator according to FIGS. 1 and 2 in broken representation.
  • the cotton card 10 shown in Fig. 1 is used for carding cotton and other fibrous material that can also be carded on it.
  • This card 10 is here a revolving flat card having a revolving cover 14, which has a licker-in 11, a drum 12 rotatable in the direction of the arrow B and a take-off 13.
  • the invention is also applicable to other types of cotton cards.
  • a separator 15 is arranged shortly in front of the pick-up 13 and serves to separate very short, practically non-spinnable fibers up to a few millimeters in length and from dirt and dust.
  • This separator 15 has the following straight parts, which extend at least approximately over the width of this drum 12 or its fitting 23, which is measured parallel to the axis of rotation of the spool 12 or its fitting 23: a thin, flat, metallic air baffle 16, the one facing the spool 12 Side forms a flat air guiding surface 17, a straight, metallic profile piece 19, which is curved approximately in the shape of a circular arc in cross section, and this circular arc extends in this exemplary embodiment over a little more than 270 °, and a strip 22.
  • the profile piece 19 is on a fixed support 20 arranged immovably and carries on its one flat end longitudinal side 21 the thin one, for example screwed onto this end longitudinal side 21 and attached to it form-fitting, flat, straight strip 22 which extends at least over the width of the fitting 23 of the drum 12 and whose free front edge 24 can preferably be formed with sharp edges, this front edge 24 extending parallel to the direction of rotation of the drum.
  • a thin cover plate 25 adapted to the curvature of the drum in the circumferential direction is immovably arranged on the card 10 at a very small constant radial distance from the circumference of the drum, which, as shown, overlaps in the circumferential direction of the drum with the air-guiding disk 16 forming an air guiding part of the spool measured width of this air baffle 16 is constant.
  • the free underside 29 of the thin metallic strip 22 is flat and its sharp front edge 24 is formed by a bevel 27 adjoining the inside wall surface 26 of the profile piece 19 on the top side.
  • the air guide disk 16 is fixedly arranged on it in a form-fitting manner, but it can be provided that it is adjustable in the direction of its width, ie parallel to the direction of the double arrow A, so that the width of the Drum 12 towards open passage 33 and the distance of the downstream edge 36 of the air baffle 16 from
  • Fitting 23 can be set differently, 5 for the purpose of optimizing the deposition and / or
  • the passage 33 defines a slot of constant width, through which deposited, very short "0 fibers and dirt as waste can pass 30 into the interior 28 of the collector.
  • the cover plate 25 is not necessary and can therefore also be omitted. In the present
  • the distance from her to her in the direction of rotation of the spool at the distance downstream leading edge 24 is expediently relatively large, for example it can be 20 to 60 mm or even larger or somewhat smaller and is larger, preferably significantly larger than the distance of the air guide disk 16 from this front edge 24, so that the drum 12 through its rotation intensely air
  • the flat air guide surface 17 - it can also, if necessary
  • This angle a is referred to as the angle of attack of the air guide surface 17 and can advantageously be approximately 10 to 30 °, but in some cases it can also be larger or smaller. In this exemplary embodiment according to FIG. 2, this angle of attack a is approximately 15 °.
  • a hose 37 of an air suction device 31 is connected, which, however, does not serve to generate such a strong suction that it sucks short fibers and dirt and dust out of the fiber material on the reel 12, but rather to the in short fibers, dirt, or the like, pneumatically challenged the collector from this collector, here through the one axial front end of the collector 30.
  • the other axial front end of the collector 30 can therefore be closed.
  • a blowing nozzle is arranged at one of the two axial ends of the profile piece 19, which has an air flow in the direction of the other axial end of the profile piece 19 through it through for the pneumatic blowing of the separated very short fibers and the separated dirt into a collecting container connected to this axial end of the profile piece 19 or into a suction point for sucking in these short fibers and the dirt.
  • the flat underside 29 of the strip 22 extends approximately tangentially to the drum 12, preferably in such a way that its distance from the drum 12 in the direction of rotation (arrow B) of the drum 12 from the front edge 24, where it can expediently be the smallest, increases slightly.
  • This strip 22 is connected along the circumference of the drum 12 to a cover plate 35 which extends as far as the consumer 13 and which is located at a short distance from the drum and protects it in its area from being touched. If desired, a carding plate can also be fixedly arranged on the card 10 in its place. This is of no importance for the effect of the separator 15.
  • the distance of the sharp leading edge 24 from the circumference of the reel 12, i. H. of its fitting 23, can expediently be set to a value of preferably 0.2 to 1.0 mm, which is set constantly during the life of the respective clothing of the reel 12, wherein, if necessary, even smaller or larger distances can also be provided. This distance is not critical within narrow tolerances, as has already been mentioned.
  • the air guide surface 17 '' which is flat here, may also have a non-straight profile, for example a slightly curved profile or another suitable profile.
  • the downstream end of the air baffle 16 forms a sharp or blunt straight edge 36, which extends at least approximately over the width of the fitting 23 parallel to the axis of rotation of the spool 12 and is referred to below as a tear-off edge 36, because on it in operation the air gap 40 along the air guide surface 17 in the direction of the Arrow C flowing, air flow generated by the rotation of the drum 12 can tear off.
  • This air flow then at least partially enters the interior 28 of the collector 30 through its passage or inlet 33 and also introduces very short fibers and dirt into this interior, the front edge 24 of the strip 22 also being able to contribute to this.
  • the air gap 40 tapers in the downstream direction and is delimited on its side facing the drum 12 by the air guide surface 17 and on the opposite side thereof, as shown, in part by the cover plate 25 and, moreover, by a circumferential drum region adjoining it in the direction of rotation of the drum.
  • This air gap 40 can be closed or open at its lateral ends adjacent to the axial ends of the collector 19.
  • the rotation of the spool 12 causes an air flow (arrow C) which flows through the air gap 40 in the direction of the passage 33 and promotes air from the ambient air of the card through the air gap 40 as shown into the space between the spool 12 and the passage 33 what purpose the cover plate 25 does not or not entirely the air gap 40 may shield against the drum 12, ie that the • air baffle 17 at least on such the
  • Tear-off edge 36 of width upstream adjoining drum 12, i.e. uncovered radially freely opposite is that the drum by its rotation can suck air in the direction of arrow C from the ambient air of the card into the tapering large air gap 40, which according to FIG. 2 on its right side through the air guide surface 17 and on its left side e.g. T. is limited by the drum 12 and the rest of the part in this embodiment by the cover plate 25.
  • the cover plate 25 Preferably, even at its narrowest point, measured in the image plane of FIG.
  • this air gap 40 can be wider than the short distance of the cover plate 25 from the drum, this area between the cover plate 25 and the drum being almost air-side due to the fiber material located on the drum circumference is shut off, so that the drum sucks in practically all of the air reaching the passage 33 through the air gap 40 directly from the area surrounding the card.
  • This air guide surface 17 thus forms with the region of the drum 12 and the cover plate 25 which is freely radially opposite it - or if the cover plate 25 is omitted or is correspondingly shorter, only with the region of the drum 12 opposite it a funnel-shaped air gap narrowing in the direction of rotation of the drum 12 40, in which air is continuously sucked in directly from the area surrounding the card 10 by the rotation of the spool 12.
  • This sucked in air increases its flow velocity in the air gap 40, because it tapers in the downstream direction and the speed of this air flow reaches its maximum in the space between the tear-off 36 and the drum 12.
  • this separator 15 separates intensely dirt and very short, practically non-spinnable fibers from the fiber material in carding on the spool 12, which passes through the passage 33 into the interior 28 of the collector 30 and can be removed from this interior 28, preferably as described, continuously pneumatic.
  • the distance e of the tear-off edge 36 from the front edge 24 can be adjusted by adjusting the air guide disk 16 parallel to itself in the direction of the double arrow A and can advantageously be small, preferably a minimum of 3 mm and / or a maximum of 30 mm, but in some cases also be even smaller or larger.
  • this distance e was reduced from 24 mm to 4 mm, the separation of short fibers and dirt increased continuously with a decreasing distance.
  • a further reduction of this distance e has not been investigated experimentally, but is also possible. The reduction ends in any case if there is a risk of blockage of the passage 33.
  • the invention creates the possibility, in a surprisingly simple manner, of practically non-spin-capable short fibers and fiber remnants, the deposition of which has not previously been possible without difficulty, but which is desired to be separated from the fiber material with good effect and also also contains dirt particles and dust contained in the fiber material good effect, without this being associated with an annoying risk of damage to the longer fibers not separated on the separator.
  • the width of the air guide disk 16 measured in relation to the adjustment direction A was 30 mm in the test card according to FIG. 2.
  • the inner radius of the profile piece 19 was approximately 25 mm and its outer radius was approximately 32.5 mm.
  • the strip 22 was arranged with its flat underside 29 approximately tangentially to the drum 12.
  • the diameter of the drum 12 was 1.29 m.
  • the thickness of the air guide disk 16 was 1 mm.
  • the downstream edge 36 of the air guide disk 16 can expediently be designed such that it forms a pronounced tear-off edge for the air flowing along the air guide surface 17.
  • it can be a flat end edge which runs approximately at right angles to the air guide surface 17, the transition from this end edge 36 to the air guide surface 17 being sharp-edged.
  • other configurations of the downstream straight edge 36 of the air guide disk 16, which extends parallel to the axis of rotation of the drum, are also possible.
  • the profile piece 20 also forms the air guide surface 17.
  • this profile piece 19 can optionally form the front edge 24, so that the collector in the simplest case including the air guide surface 17 can only be formed by a single profile piece.
  • the set 23 of the drum 12 can preferably be an all-steel set.
  • the air suction device 31 having a hose 37 connected to an axial end of the collector 30 can be an air suction device 31 assigned only to this separator or, which is generally less expensive, a central air suction device 31 of the card 10, which can also be found in other places in the card Carded air is extracted. It can also be provided, if necessary, that the air suction device sucks air from its interior 28 at at least one point, for example in its longitudinal center, at both axial ends 41 of the collector of the interior 28 and / or on the circumference of the collector 30.
  • the separator 15 can be arranged particularly expediently in the vicinity of the pickup 13, preferably in the direction of rotation of the drum 12 in front of the pickup 13. However, other arrangements are also possible. If necessary, a plurality of separators 15 can also be assigned to the cotton card.
  • the tear-off edge 36 of the air guide surface 17 is located in the exemplary embodiment according to FIG. 2 at the downstream end of both the air guide disc 16 and the air guide surface 17, which is particularly advantageous here. However, other arrangements of the tear-off edge and designs of the air guiding part 16 are also possible. Two embodiments are shown in FIGS. 3A and 3B. In Fig.
  • the air guide member 16 is an angle sheet or the like, whose leg 44 attached to the profile piece 19 has only the air guide surface 17, whereas the other leg 45 is bent into the collector 30 for collecting waste by more than 90 °, the preferably sharp-edged tear-off edge 36 is formed by the bending edges of the profiled sheet 16 at the downstream end of the air guiding surface 17.
  • the tear-off edge 36 of the air-guiding part 16, which is made of sheet metal or the like, is formed by an offset 42 of the air-guiding part 16, as shown, as a result of which the tear-off edge 36 is formed here between the upstream end 46 and the downstream end 47 of the Lu tleit Structure 17 is located.
  • the air guiding part 16 in FIG. 3B it is also possible to extend the air guiding part 16 in FIG. 3B, for example as shown in dash-dot lines at 48, preferably in such a way that it projects into the collector 30 so as to provide a collecting area for waste that has entered the collector to form, if this is desired, the leading edge 2 then referring to this embodiment on the drum 12 radially next to this extension 48 at a distance from it, so that the air guide member 16 then overlaps the lower region of the collector 30, which begins at the front edge 24, as shown.
  • the respective air gap 40 through which the drum 12 sucks in air through its rotation forms an air duct in all exemplary embodiments, which can also be referred to as a short air duct.

Landscapes

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

Abstract

Procédé et carde de coton (10) servant à éliminer des déchets. Afin d'éliminer des salissures et des fibres très courtes, tout en ménageant la fibre, le tambour (12) de la carde de coton aspire en tournant auprès du séparateur l'air environnant la carde de coton à travers une fente d'air (40) formée entre la carde et le tambour. Ce courant d'air s'écoule au moins en partie vers un collecteur (30) situé à proximité du tambour (12), vis-à-vis de celui-ci. Les salissures ou similaires et, le cas échéant, les fibres très courtes se trouvant dans les fibres situées sur la périphérie du tambour sont entraînées dans le collecteur (30).
EP19880905779 1987-06-28 1988-06-28 Procede d'elimination des dechets de cardes de coton, et carde de coton Ceased EP0366692A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3721342 1987-06-28
DE3721342 1987-06-28

Publications (1)

Publication Number Publication Date
EP0366692A1 true EP0366692A1 (fr) 1990-05-09

Family

ID=6330461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880905779 Ceased EP0366692A1 (fr) 1987-06-28 1988-06-28 Procede d'elimination des dechets de cardes de coton, et carde de coton

Country Status (3)

Country Link
EP (1) EP0366692A1 (fr)
JP (1) JPH02504048A (fr)
WO (1) WO1989000214A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6185787B1 (en) 1997-07-30 2001-02-13 Maschinenfabrik Rieter Ag Fiber flock cleaner
US6477734B1 (en) 1998-05-26 2002-11-12 Maschinenfabrik Rieter Ag Dirt removal system for a textile machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959157A1 (fr) * 1998-05-18 1999-11-24 Gerhard Mandl Système de chapeau stationnaire pour une machine de cardage
DE10051695A1 (de) * 2000-10-18 2002-06-20 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde für Textilfasern wie Baumwolle o. dgl.
CN102296382B (zh) * 2011-09-16 2013-08-07 江苏省振新实业有限公司 梳毛机导流装置
CH715974A1 (de) * 2019-03-19 2020-09-30 Rieter Ag Maschf Messerelement für eine faserverarbeitende Maschine.

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Publication number Priority date Publication date Assignee Title
US3858276A (en) * 1973-08-27 1975-01-07 John D Hollingsworth Apparatus for removing trash from carded fibers
US4129924A (en) * 1974-12-18 1978-12-19 Hergeth Kg Maschinenfabrik Und Apparatebau Apparatus for separating card strips during carding of fibrous materials
US4309796A (en) * 1979-07-02 1982-01-12 John D. Hollingsworth On Wheels, Inc. Carding trash removing apparatus and method
DE2931699A1 (de) * 1979-08-04 1981-02-19 Trützschler GmbH & Co KG, 4050 Mönchengladbach Verfahren und vorrichtung zum abscheiden von abfall aus einem faser-abfall-gemisch
DE3331362C1 (de) * 1983-08-31 1985-01-24 Wolters, Peter, 2370 Rendsburg Schmutzausscheider für eine Karde

Non-Patent Citations (1)

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See references of WO8900214A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6185787B1 (en) 1997-07-30 2001-02-13 Maschinenfabrik Rieter Ag Fiber flock cleaner
US6477734B1 (en) 1998-05-26 2002-11-12 Maschinenfabrik Rieter Ag Dirt removal system for a textile machine

Also Published As

Publication number Publication date
WO1989000214A1 (fr) 1989-01-12
JPH02504048A (ja) 1990-11-22

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