EP0848091B1 - Appareils pour enlever des impuretés - Google Patents

Appareils pour enlever des impuretés Download PDF

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Publication number
EP0848091B1
EP0848091B1 EP19970810695 EP97810695A EP0848091B1 EP 0848091 B1 EP0848091 B1 EP 0848091B1 EP 19970810695 EP19970810695 EP 19970810695 EP 97810695 A EP97810695 A EP 97810695A EP 0848091 B1 EP0848091 B1 EP 0848091B1
Authority
EP
European Patent Office
Prior art keywords
edge
air
machine according
downstream
drum
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.)
Revoked
Application number
EP19970810695
Other languages
German (de)
English (en)
Other versions
EP0848091A1 (fr
Inventor
Olivier Wüst
Beat Näf
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0848091A1 publication Critical patent/EP0848091A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/34—Grids; Dirt knives; Angle blades
    • 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
    • D01G15/24—Flats or like members

Definitions

  • the invention is concerned with an improvement in dirt separation devices for use in the blowroom or in the carding machine of a spinning mill.
  • the present invention is based on the knowledge that the air flows are not only for the removal of dirt but also in connection with the Nissen formation play an essential role. In the latter context it is Turbulence is not desirable. In addition, the area downstream of the knife just as important as the area upstream from the Knife.
  • the invention is :
  • the object of the invention is to control the air flow downstream of one Edge provided with suction to improve. This enables the Air turbulence reduces the formation of nits in fiber processing machines become. But it can also improve dirt removal on and for be achieved.
  • the invention can be one or the other or both serve these purposes.
  • the invention provides a fiber processing machine with a cutting edge, both fiber and air in a substantially predetermined Direction of transport past the edge and dirt particles selectively to be removed from the fiber / air stream by means of the edge.
  • the invention is characterized in that at least one measure has been taken to prevent the Influence air currents in the zone downstream of the knife.
  • the said Measure can be taken in such a way that air turbulence downstream (in the Transport direction) from the edge or even (if possible) eliminated. With in other words, the most laminar possible downstream of the edge Flow pattern are generated or maintained.
  • the said measure can be taken in such a way that through the edge separated air can be removed essentially without recirculation.
  • the measure preferably consists in the air being discharged through the edge is at least partially replaced by newly introduced air.
  • the newly introduced air conveniently flows into the zone adjoining the edge, e.g. within 50 mm downstream of the edge and preferably within a distance of less than 20 mm. Flows in a solution the newly introduced air just behind the edge into the fiber / air flow.
  • the invention is particularly, but not exclusively, for use in a Machine provided which comprises a rotatable roller (drum or drum), the fiber / air flow in a "working gap" between the circumference of the roller and a surrounding formwork flows.
  • the edge is in the formwork intended.
  • the selectivity of the excretion is then achieved in that the Roller is provided with a fiber-holding set, while the centrifugal force Dirt particles, which are heavier than the fibers, radially outwards (against the Formwork) is pressing.
  • the working gap usually extends over almost that whole axial length (over the "working width") of the roller.
  • the arrangement can be such be taken that the effective cross section of the working gap downstream of the edge undergoes an expansion, the degree of expansion at best not in the can be determined in advance, e.g. if the position of the edge in the radial Direction opposite the roller can be set.
  • means are provided, for example, to air into the room to flow in downstream of the edge.
  • the means mentioned can be such that air be arranged over substantially the entire working width can flow in, preferably as evenly as possible over the entire working width.
  • the edge is usually formed on an element that is in the formwork of the Roller is suspended.
  • the formwork should now be formed in such a way that the The required air flow is enabled, e.g. so that a Flow channel between the element and a part adjacent to it remains free. If the suspension has to bridge this channel, this is preferred ensured that the partial currents separated from each other by the suspension Connect (again) before they flow into the room.
  • the arrangement is preferred with regard to the inflowing amount of air self-adjusting, i.e. (e.g.) that there is no need to work with blown air. If the free flow cross-section of the channel is dimensioned sufficiently required air flow due to a negative pressure in the room downstream of the Edge.
  • the flow channel can be formed or arranged in such a way that when Incoming air enters the room essentially in the direction of transport flows.
  • Embodiments of the invention are based on the schematic Drawings described as examples.
  • FIG. 1 shows a schematic side view of the reel 30 of a card, the end parts 32, 34 of a revolving flat aggregate, which is the main carding zone defined, a breeze (the lickerin) 36, and a customer 38.
  • the direction of rotation of the drum 30 about its axis A is indicated by the arrow D.
  • the device 39 comprises two drum shuttering segments 42, 44, which are described in more detail below to be discribed.
  • the post-carding zone between the other end 32 of the revolving flat aggregate and the pickup 38, is with a further dirt separating device 46 provided which is interchangeable with the device 39 and therefore not individually is described. Finally, it is in the sub-carding zone (between the 1 and a further dirt separating device 48 and four drum shuttering segments 50.
  • the segments 50 are with the segment 40 interchangeable.
  • the device 48 can be divided into two segments 50 can be replaced, but (if maintained) also according to this invention be formed.
  • the outer surface of the drum 30 is identified by the reference number 31 indicated, their direction of rotation is again indicated by the arrow D.
  • the Shell surface 31 carries a set, but this is not shown here because it is for the Explanation does not play an essential role and is well known by the expert.
  • device 39 comprises a first formwork segment 42, which as Carrier for carding elements 12 provided with trimmings is formed, and a second Formwork segment 44, which is provided as a support for further sets Elements 16 is formed.
  • the above-mentioned working gap is indicated at 10, with a Separation gap 18 between the segments 42, 44 remains open and in the working gap 10 opens.
  • the separation gap 18 is covered by a hood 20 which is attached to one End (not shown in Fig. 2) is connected to a suitable suction to discharge waste which has been discharged through the gap 18.
  • the second segment 44 is provided with a knife 22 which is inserted into the working gap projecting separating edge 24.
  • the knife 22 is by screws 25 (only one screw 25 visible in FIG. 2) on an end part 15 of the segment 44 attached.
  • the end part 15 has a bearing surface 17 for a corresponding surface 19 on the knife 22.
  • the Knife 22 moved in the directions indicated by the double arrow EP are, the bearing surfaces 17,19 slide against each other. This allows the position the separating edge 24 opposite the lateral surface 31 (or the one not shown Set) can be changed.
  • the knife 22 also extends over the full Working width, it is important that the position of the cutting edge opposite the The lateral surface 31 is set or maintained as uniformly as possible over the width.
  • Hood 20 is pivotally mounted on first segment 42 (holding means not shown) and prints with a rubber seal 26 on the one removed from the separation edge 24 Face of the knife 22.
  • the fiber / air flow FLS in the working gap 10 upstream from the edge 24 is through the peripheral speed and the "surface roughness" of the drum 30 given.
  • the latter parameter is, of course, obtained through the procurement of those not shown Garnish influenced.
  • the set position of the separation edge 24 with respect to the outer surface 31 (or with respect to that supported by the outer surface Clothing) largely determines the proportion of incoming fiber / air flow FLS, the "peeled" by the knife 22, redirected into the separation gap 18 and thereby being removed from the working gap 10.
  • the adjustability is important because the portion to be excreted depends on the processed fiber material and not on can be determined in advance (when designing the machine). But how indicated, the invention is not for use with an adjustable knife limited.
  • the removed portion should be chosen so that the "peeled" air layers relatively many dirt particles (possibly also short fibers) and carry a few good fibers.
  • the separating edge 24 becomes clear set closer to the lateral surface 31 than for the one opposite the drum Surface 28 of segment 44 is possible - i.e. the working gap 10 spreads in Region 29 downstream from the separating edge 24 in the radial direction to a degree that depends on the current setting of the knife 22.
  • FIG remove A first solution to these problems can be found in device 39A in FIG remove, in which the parts already described in connection with Figure 2 were indicated with the same reference numerals.
  • the changed parts are on the one hand the knife 22A and on the other hand the end part 15A of the segment 44.
  • the end portion 15A is provided with projections 50 (only a projection 50 visible in Figures 3 and 4), each having a bearing surface 17A have the knife 22A.
  • projections 50 there are as many projections 50 as fixing screws 25 present and each projection 50 is with a threaded bore 52 for it Provide assigned fixing screw.
  • the width B (Fig. 4) of each projection is but only a fraction of the working width, so that one between the projections 50 Flow channel 54 defined behind the (unchanged) contact surface 19 of the knife becomes.
  • the seal 26 touches the end face of the knife 22 thus allows access to the outer end of the channel 54, which is shown in FIG Arrow L is indicated. Air from the surroundings of the formwork can therefore pass through the Channel 54 flow to an adverse vacuum in area 29 downstream of to avoid the separating edge 24A.
  • the knife 22A is now formed with a head section 14 which is connected to the separating edge 24 is provided.
  • the head section 14 is now also provided with a deflection nose 57 which together with the lower, correspondingly rounded edge 56 on the end part 15A Forms mouth M from channel 54 into working gap 10.
  • the protrusions 50 preferably do not extend to edge 56 of end portion 15A (see in particular Fig. 4).
  • Each projection 50 has a rounded portion 58 at such a point formed that the partial flows L1 and L2 on both sides of the projection unite in front of the mouth M and as uniformly as possible across the working width can form distributed "air curtain".
  • This surface 23 can be such be designed so that the aerodynamics at the head 14 is favored.
  • the number of protrusions is 50 (or the total area size of their bearing surfaces 17A) chosen such that the knife 22A is held stable. This is particularly important because of the very close distances between the separating edge and the one not shown Set on the drum.
  • the through the projections 50 and the fixing screws 25th formed suspension of the knife 22A must ensure that the knife is not in the air currents "flutter".
  • Each projection 50 can be made in one piece with the End part 15A can be formed, but could also be formed separately and on the end part 15A (e.g. by gluing).
  • the ability of an air stream to carry particles and flight depends on the Flow rate.
  • the speed of the current L at the inlet to the Channel 54 should be significantly lower than the speed at the M mouth.
  • the velocity of the flow approaching the edge is FLS V m / sec, should e.g. the flow velocity at the inlet to channel 54 (stream L) at approx. V / 6 and the speed at the mouth M at approx. V / 2. This can through the design of the channel 54 (selection of the light range or the effective Flow cross section) can be achieved.
  • the invention enables very narrow adjustments of the edge 24 or the surface 28 opposite the tips of the clothing on the reel 30 (Fig. 1).
  • the distance of the Edge 24 from the clothing tips can e.g. in the range 0.25 to 0.5 mm., and the Distance of the surface 28 from the clothing tips can e.g. 0.8 mm.
  • the technology or functional principle of dirt removal can be any the known options can be selected.
  • Various devices for use in the card has already been mentioned in the introduction.
  • Other variants are e.g. in EP-A-387 908, EP-A-366 692, US-C-4,400,852, US-C-5,448,800, EP-A-520,958, DE-A-39 02 202, US-C-4,805,267, DE-A-33 31 362, US-C-4,797,980 and Find US-C-5,031,279.
  • the latter script also shows that the same Principles can be applied in the cleaning machine, which of course also applies to the present invention.
  • a profile piece 50 is used (e.g. made of hard anodized aluminum or steel) as a replacement for the end part 15A of the Segment 44 in Figure 3, as well as for the knife 22A, for the hood 20 and also for an end part of the segment 42.
  • the profile piece 50 extends over the whole Working width. It is provided with a longitudinal channel K and with an opening 52 which serves to form the separation gap 18.
  • the profile piece 50 also has two formwork parts 54, 56, of which one part 54 is provided with a guide surface 58, which together with the drum 30 (in FIG. 5 not shown, cf. 3) limits the working gap 10.
  • the second part 56 serves as a carrier for a guide member 60 which is interchangeably attached to the carrier to after assembly to face the drum or its clothing.
  • the element 60 according to the known principles of the technology of such dirt removal devices be formed.
  • the tapered wall part 62 between the surface 58 and the opening 52 is with a recess 64 which receives a blade blade 66. It is a Fastening means (not shown) are provided so that the separating edge 24 on the sheet 66 adjustable in the directions indicated by the double arrow EP compared to the Working gap can be positioned.
  • deflected air is not directly at the separating edge replaced by new air, but only at the end of the edge remote from the edge 24 Guide surface 58.
  • an air supply opening 72 is left open, which in operation connects the working gap with the environment outside the formwork.
  • the distance S of opening 72 from edge 24 is preferably less than 50 mm.
  • the Opening 72 is of course in the form of a "slot" so that the opening stretches across the entire working width. In this case there is no problem with regard to the fixings, since the part 70 and the profile piece 50 are independent can be attached to each other on the drum shields.
  • the guide surface 58 should be designed and set close to the drum so that no significant turbulence in the downstream of the edge 24 in the working gap remaining fiber / air flow arise.
  • the surface 58 It is advantageous to adjust the drum so closely that it is not essential Spread of the current after the edge 24 is required. This can also make one Pressure drop in the working gap on or downstream of the edge 24 largely be avoided. By maintaining suitable pressure conditions on the Edge 24 the return of air from the opening 18 can be avoided. It is also possible, more precisely the "peelable" portion of the fiber / air flow through the Adjust the blade 66 to adjust. Without this measure it can be under unfavorable conditions result in air circulation within the Opening 52 is created and dirt particles get back into the working gap.
  • the inner surface 74 of the profile piece 50 designed in such a way that the discharged air is approximately tangential into the longitudinal channel K enters and then, initially following the inner surface 74, into the area around the center of the Longitudinal channel is guided. This creates a spiral movement of the air, including that carried dirt particles or fibers, as shown schematically in FIG. 6 is shown.
  • the suction is preferably carried out from this central area on one End AE (Fig. 6) of channel K and there is air in the middle at the other end ZE introduced into the channel K. This makes it possible over the entire working width maintain approximately constant recording conditions at the separation gap 18.

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

Claims (11)

  1. Une machine de traitement de fibres avec une arête de séparation (24), machine dans laquelle aussi bien la fibre qu'également l'air sont dirigés, devant l'arête, dans une direction de transport essentiellement prédéterminée, et la particule de déchet peut être évacuée du courant fibre/air (FLS) à l'aide de l'arête,
    caractérisée par le fait qu'au moins une mesure est prise, afin de limiter des turbulences d'air en aval de l'arête (24) (vu dans la direction de transport).
  2. Une machine de traitement de fibres avec une arête de séparation (24), machine dans laquelle aussi bien la fibre qu'également l'air sont dirigés, devant l'arête, dans une direction de transport essentiellement prédéterminée, et la particule de déchet peut être évacuée du courant fibre/air (FLS) à l'aide de l'arête,
    caractérisée par le fait qu'au moins une mesure est prise, afin de limiter respectivement compenser une baisse de pression, provoquée par l'évacuation de l'air, en aval de l'arête.
  3. Une machine selon revendication 1 ou 2,
    caractérisée par le fait que
    la machine comprend un rouleau rotatif (30), et où le courant fibre/air (FLS) s'écoule dans une fente de travail (10), comprise entre la circonférence (31) du rouleau (30) et un carénage entourant celui-ci.
  4. Une machine selon revendication 1, 2 ou 3,
    caractérisée par le fait que
    l'agencement est réalisé de telle manière que la section effective de la fente de travail (10) subit un élargissement, en aval de l'arête (24).
  5. Une machine selon l'une des revendications 1 à 4,
    caractérisée par le fait que
    ladite mesure consiste en ce que des moyens (50,54; 72) sont prévus, afin de laisser s'écouler de l'air dans l'ambiance, en aval de l'arête (24).
  6. Une machine selon revendication 5,
    caractérisée par le fait que
    lesdits moyens (50,54; 72) sont disposés de telle manière que de l'air peut s'écouler essentiellement sur toute la largeur de travail, de préférence régulièrement sur toute la largeur de travail.
  7. Une machine selon l'une des revendications précédentes,
    caractérisée par le fait que
    l'arête (24) est formée sur un élément (22) qui est suspendu dans le carénage du rouleau (30), et où la suspension (50) est formée de telle manière que la formation du courant d'air (L) nécessaire est rendue possible.
  8. Une machine selon revendication 7,
    caractérisée par le fait qu'un canal d'écoulement (54) reste libre entre l'élément (22A) et une partie (15A) lui étant voisine.
  9. Une machine selon revendication 8,
    caractérisée par le fait que
    la suspension (50) superpose le canal (54), et où des soins sont pris de manière à ce que des courants partiels (L1,L2), séparés l'un de l'autre par la suspension (50), soient réunis (à nouveau), avant qu'ils ne s'écoulent dans l'ambiance.
  10. Une machine selon revendication 8 ou 9,
    caractérisée par le fait que
    le canal d'écoulement (54) est formé respectivement disposé de telle manière que l'air introduit s'écoule essentiellement dans la direction de transport, déjà lors de l'écoulement dans l'ambiance.
  11. Une machine selon l'une des revendications 1 à 9,
    caractérisée par le fait que
    l'agencement concernant la quantité d'air entrante, est auto-ajustable.
EP19970810695 1996-10-18 1997-09-22 Appareils pour enlever des impuretés Revoked EP0848091B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH254896 1996-10-18
CH254896 1996-10-18
CH2548/96 1996-10-18

Publications (2)

Publication Number Publication Date
EP0848091A1 EP0848091A1 (fr) 1998-06-17
EP0848091B1 true EP0848091B1 (fr) 2001-11-07

Family

ID=4236275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970810695 Revoked EP0848091B1 (fr) 1996-10-18 1997-09-22 Appareils pour enlever des impuretés

Country Status (2)

Country Link
EP (1) EP0848091B1 (fr)
DE (1) DE59705266D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101273161B (zh) * 2005-09-26 2011-04-20 里特机械公司 在梳理机的锡林上加工纤维的装置
CN101273160B (zh) * 2005-09-26 2011-08-24 里特机械公司 用于在梳理机的锡林上加工纤维的装置
CN103741276A (zh) * 2014-01-26 2014-04-23 河北尚美羊绒纺织有限公司 一种羊绒分梳装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145166A (en) * 1997-07-30 2000-11-14 Maschinenfabrik Rieter Ag Trash elimination apparatuses for fiber cleaning aggregates
DE59907726D1 (de) 1998-05-26 2003-12-18 Rieter Ag Maschf Schmutzabfuhr
DE10051695A1 (de) * 2000-10-18 2002-06-20 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde für Textilfasern wie Baumwolle o. dgl.
DE10139163B4 (de) * 2001-08-09 2014-11-13 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Karde, bei der der Garnitur der Trommel gegenüberliegend Abdeckelemente vorhanden sind
DE10144211A1 (de) 2001-09-08 2003-05-22 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde zum Reinigen und Öffnen von Fasermaterial
GB2385606B (en) * 2002-02-20 2005-11-09 Truetzschler Gmbh & Co Kg Apparatus on a carding machine
DE10207159B4 (de) * 2002-02-20 2015-12-17 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Karde, bei der einer Walze, z. B. Trommel, eine Mehrzahl von Arbeitselementen zugeordnet ist
DE102006005589A1 (de) 2006-02-06 2007-08-09 TRüTZSCHLER GMBH & CO. KG Vorrrichtung an einer Karde oder Krempel für Textilfasern wie Baumwolle, Chemiefasern o. dgl., zur Kurzfaserentfernung
CH714869A1 (de) * 2018-04-05 2019-10-15 Rieter Ag Maschf Vorrichtung zur Ausscheidung von Verunreinigungen in einer Karde.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1477794A1 (ru) * 1987-05-04 1989-05-07 Ивановский текстильный институт им.М.В.Фрунзе Устройство дл очистки волокон от сорных примесей
DE3734313A1 (de) * 1987-10-10 1989-04-27 Hollingsworth Gmbh Krempel zur herstellung von faservliesen u. dgl.
DE3902202B4 (de) * 1989-01-26 2004-09-23 Trützschler GmbH & Co KG Vorrichtung an einer Karde, bei der unterhalb der Trommel zwischen Abnehmer und Vorreißer Abdeckelemente angeordnet sind
CN1022337C (zh) * 1989-03-23 1993-10-06 里特机械公司 纤维网除尘器
EP0481302A3 (en) * 1990-10-16 1992-09-02 Maschinenfabrik Rieter Ag Grid for an opening roller of a spinning machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101273161B (zh) * 2005-09-26 2011-04-20 里特机械公司 在梳理机的锡林上加工纤维的装置
CN101273160B (zh) * 2005-09-26 2011-08-24 里特机械公司 用于在梳理机的锡林上加工纤维的装置
CN103741276A (zh) * 2014-01-26 2014-04-23 河北尚美羊绒纺织有限公司 一种羊绒分梳装置
CN103741276B (zh) * 2014-01-26 2017-02-08 河北宇腾羊绒制品有限公司 一种羊绒分梳装置

Also Published As

Publication number Publication date
EP0848091A1 (fr) 1998-06-17
DE59705266D1 (de) 2001-12-13

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