EP2551389B1 - Dispositif d'étanchéification pour un métier à tisser - Google Patents

Dispositif d'étanchéification pour un métier à tisser Download PDF

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Publication number
EP2551389B1
EP2551389B1 EP12004346.8A EP12004346A EP2551389B1 EP 2551389 B1 EP2551389 B1 EP 2551389B1 EP 12004346 A EP12004346 A EP 12004346A EP 2551389 B1 EP2551389 B1 EP 2551389B1
Authority
EP
European Patent Office
Prior art keywords
suction
flanges
units
compacting
contact surface
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.)
Active
Application number
EP12004346.8A
Other languages
German (de)
English (en)
Other versions
EP2551389A2 (fr
EP2551389A3 (fr
Inventor
Gabriel Schneider
Robert Nägeli
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
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP2551389A2 publication Critical patent/EP2551389A2/fr
Publication of EP2551389A3 publication Critical patent/EP2551389A3/fr
Application granted granted Critical
Publication of EP2551389B1 publication Critical patent/EP2551389B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides

Definitions

  • the invention relates to a suction device for the compression air of two interchangeable suction units on a twin drafting system of a spinning machine according to the preamble of claim 1.
  • the compression elements have a suction slot, which on the one hand communicates with a suction channel and, on the other hand, faces a point of the suction drum provided with perforations.
  • the suction channels of the suction drums are in the assembled state with a suction pipe in connection, via which the suction air is fed to a central suction, which is connected to a vacuum source. From the DE 101 45 444 A1 is z.
  • such a device wherein the suction inserts used there are placed in the suction drums first between the suction drums via a guide in an intermediate position, from which they are successively moved laterally into the interior of the respective suction drum in its working position. Subsequently, a, provided with a channel lid is closed, whereby the suction inserts are locked in their working position.
  • the two suction channels of the suction inserts are in communication with a housing, which is also designed as a channel and through which the suction air is discharged to a central suction.
  • a housing which is also designed as a channel and through which the suction air is discharged to a central suction.
  • three coupling points between the suction channels of the suction inserts, the channel of the cover and housing are necessary.
  • each coupling point between the individual channels involves the risk of leaks and thus the intake of foreign air from the environment of the device, which fiber fly can be sucked in these places and thus leads to contamination and deposits.
  • fiber parts can get into leaks at the suction channel.
  • such leaks lead to a vacuum drop in the region of the suction slots and ultimately to a reduction of the suction work on the suction drum.
  • the attachment of sealing elements in the solution shown necessary which in turn makes the device more expensive and expensive.
  • the sealing elements must be checked at regular intervals for their function. It has also been shown that the air ducting over the duct of the lid is not optimal and that air turbulences can occur inside the duct.
  • the invention now has the task of avoiding the existing disadvantages of known solutions and to propose an easy-to-use suction device, in which no additional sealing elements in the region of the coupling points are required and an optimal air flow is ensured within the suction device.
  • FIG. 1 shows a schematic side view of a spinning station 1 a spinning machine (ring spinning machine) with one, of two adjacent drafting units 2 of a cylinder drafting 2z.
  • the drafting units 2 are each provided with an input roller pair 3, a middle roller pair 4 and a pair of output rollers 5.
  • To each of the center rollers of the middle roller pair a strap is guided, which are each held around a cage not shown in detail in its illustrated position.
  • the upper rollers of said pairs of rollers 3 to 5 are designed as pressure rollers which are rotatably mounted on the axes of a pivotally mounted pressure arm (not shown).
  • the lower rollers of the roller pairs 3, 4, 5 are connected to a drive, not shown.
  • roller pairs 4 are slightly higher than the peripheral speed of the roller pairs 3, so that the, the drafting unit 2 supplied fiber in the form of a sliver L between the pair of input rollers 3 and the middle roller pair 4 is subjected to a pre-delay.
  • the main distortion of the fiber material L is formed between the middle roller pair 4 and the output roller pair 5, wherein the output roller pair 5 has a substantially higher peripheral speed than the middle roller pair 4.
  • the output roller pair 5 is equipped with a compression device W in the present example.
  • the compression device W consists of a suction drum 6, which is driven via an axis 8.
  • the suction drum 6 is associated with a pressure roller 9, which forms with her a nip P1.
  • a pinch roller 7 also called rotation locking roller
  • the compression device W consists of a suction drum 6, which is driven via an axis 8.
  • the suction drum 6 is associated with a pressure roller 9, which forms with her a nip P1.
  • a pinch roller 7 also called rotation locking roller
  • a suction zone Z in which the fiber material V discharged from the clamping point P1 is compressed by the action of a suction air.
  • This compaction process is well known and has already been described in previous publications. It is therefore not discussed here in detail.
  • a cover 13 is attached, which serves to guide the air during the compression process.
  • the compressed yarn G delivered downwards via the clamping point P is fed via a yarn guide 43 to a ring spinning device shown schematically.
  • a ring 39 and a rotor 40 wherein the yarn G is wound onto a sleeve 41 to form a coil 42 (Kops).
  • the ring 39 is attached to a ring frame 44, which performs an up and down movement during the spinning process.
  • suction units 10, 10a are arranged within the suction drums, which in particular from the enlarged view X (after FIG. 1 ) in FIG. 2 can be seen.
  • the suction unit 10 of the suction drum 6 has a suction slot (suction opening) 11, which faces the region on the inside of the suction drum 6 in which the openings OE are arranged on the circumference of the suction drum 6.
  • the suction slot 11 is connected to a suction channel 12 mounted inside the suction unit 10, which opens into an outlet opening 01 of a flange F1, which is attached to the suction unit 10.
  • a further suction drum 6a is mounted on the shaft 8, in which a suction unit 10a mounted in mirror image with respect to the suction unit 10 is provided.
  • the suction unit 10a in this case has a suction slot 11a, which opens into a suction channel 12a.
  • the outlet opening 02 of the suction channel 12a is located in a flange F2, which is connected to the suction unit 10a.
  • FIG. 2 As in particular from the enlarged view (after FIG. 2 ) of the FIG. 3 can be seen, are the flanges F1, F2 in the installed state of the suction units 10, 10a with their stop surfaces A1, A2 on a stop surface A of the suction tube 22.
  • the flanges F1, F2 are directly adjacent to each other on this stop surface A on, with the oppositely directed outer surfaces FG directly adjacent to each other.
  • the outer surfaces FG are each inclined by an angle c to the respective abutment surfaces A1 and A2 and form a wedge-shaped free space with an angle b.
  • In the mounted position projects into this space K a central web 26 which is fixed to a flap (holding means) 17 which is pivotally mounted about the axes 18 on a suction member 15.
  • the web 26 in this case has an edge 27 which engages with an angle b in the wedge-shaped free space K.
  • the suction tube 22 is attached to the suction element 15.
  • a guide 16 is also attached, which has spaced-apart slide rails 14. About these slides 14, the suction units 10, 10a attached to the suction units guide webs 21 on the guide 16 in the in FIG. 3 transferred operating position transferred. Similar examples of such guide webs are for. B. also from the DE 10 2005 044 967 A1 refer to.
  • the pivotable flap 17, which serves as a holding means for the suction units 10, 10a, has at its free end a latch 28 which engages in the closed position in a recess 29 of the guide 16 and the flap 17 in this position under a certain bias in holding this locked position.
  • a pressure is exerted on the outer surfaces FG of the flanges F1, F2 via the edge 27, whereby a resultant compressive force arises on the oblique outer surfaces FG which attempts to push both flanges F1, F2 away from one another.
  • this is prevented by webs 32, 33, which are mounted in the region of the narrow sides of the rectangular opening O in the region laterally of the stop surface A. Ie.
  • the upper outer surfaces F and a part of the lateral outer surfaces F of the flanges F1, F2 are covered by the correspondingly shaped flap 17.
  • webs 23 and 24 are provided which cover the lateral outer surfaces F of the flanges F1, F2 up to the webs 32, 33.
  • the axes 18, about which the flap 17 is pivotally mounted, are attached to the suction element 15.
  • the central web 26 which is fixed to the flap 17 extends over the entire length of the outer surfaces FG.
  • the suction tube 22 has a tapered end 46, which opens into a circular pipe end 47.
  • a flange 48 is provided, via which the tube 22 is received and stored in a groove 50 of a bearing element 30.
  • the usually made of rubber bearing member 30 is attached via a circumferential groove 49 on a machine frame MR.
  • an insertion aid EF is provided on the bearing element, which extends umbrella-like about half the circumference of the tube 22.
  • a further tube 47 is fixed in the bearing element 30, which is connected via a coupling 35 with a central suction channel 37 in connection.
  • the suction channel 37 is connected to a vacuum source UP.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (4)

  1. Dispositif d'aspiration pour l'air de compression de deux unités d'aspiration (10, 10a) échangeables sur un banc d'étirage double (2z) d'un métier à filer (10, 10a) pour la compression aérodynamique de matières fibreuses (V) guidées à travers respectivement une zone d'aspiration (Z) par des éléments de compression (6, 6a) périphériques, munis de perforations (OE) et opposés l'un à l'autre, dans lequel l'unité d'aspiration attribuée à l'élément de compression respectif est munie d'un orifice d'aspiration (11, 11 a) relié à un passage d'aspiration (12, 12a) intégré à l'unité d'aspiration respective, ainsi que d'un élément d'aspiration (15) attribué aux unités d'aspiration (10, 10a) et présentant un tuyau d'aspiration (22), élément par lequel l'air de compression aspiré par les unités d'aspiration (10, 10a) est déchargé du dispositif d'aspiration, dans lequel les orifices de sortie (01, 02) du passage d'aspiration (12, 12a) respectif font face à un orifice (O) du tuyau d'aspiration en un point d'accouplement (KS), et l'élément d'aspiration (15) présente des guides (16) et des moyens de maintien (17) par lesquels les unités d'aspiration (10, 10a) sont maintenues et fixées par rapport à l'élément de compression (6, 6a) respectif, caractérisé en ce que les orifices de sortie (01, 02) des unités d'aspiration (10, 10a) présentent respectivement une bride (F1, F2) périphérique rectangulaire avec une surface de butée plane (A1, A2) qui prennent appui en un point d'accouplement (KS) commun côte à côte sur une surface de butée (A) plane et périphérique d'un orifice (O) commun, de forme rectangulaire, du tuyau d'aspiration, dans lequel les brides (F1, F2) avec les orifices de sortie (01, 02) des unités d'aspiration recouvrent complètement l'orifice (O) du tuyau d'aspiration (22) et sont maintenues par le moyen de maintien (17) avec une force de pression sur la surface de butée (A).
  2. Dispositif d'aspiration selon la revendication 1, caractérisé en ce que l'élément d'aspiration (15) au niveau de la surface de butée (A) et le moyen de maintien (17) sont configurés de telle sorte que dans la position de verrouillage du moyen de maintien (17), les surfaces extérieures exposées (F) des brides (F1, F2) des unités d'aspiration (10, 10a) sont couvertes.
  3. Dispositif d'aspiration selon la revendication 2, caractérisé en ce que l'élément d'aspiration présente à distance des petits côtés de l'orifice rectangulaire (O) des entretoises (32, 33) aménagés latéralement et auxquelles s'appliquent au moins partiellement les surfaces extérieures (F), tournées vers les entretoises, des brides (F1, F2) adjacentes des unités d'aspiration (10, 10a) dans la position de verrouillage.
  4. Dispositif d'aspiration selon la revendication 3, caractérisé en ce que les surfaces extérieures (FG), en position de verrouillage et tournées l'une vers l'autre, des brides (F1, F2) des unités d'aspiration (10, 10a) s'étendent avec un angle (c) inférieur à 90° par rapport à leur surface de butée (A1, A2) respective, et l'élément de maintien (17) présente une entretoise centrale (26) munie d'un bord libre (27) s'étendant avec un angle aigu (d) et s'engageant entre les surfaces extérieures (FG), tournées l'une vers l'autre, des brides (F1, F2) dans la position de verrouillage.
EP12004346.8A 2011-07-25 2012-06-08 Dispositif d'étanchéification pour un métier à tisser Active EP2551389B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01244/11A CH705310A1 (de) 2011-07-25 2011-07-25 Absaugvorrichtung für die Verdichtungsluft von zwei auswechselbaren Saugeinheiten an einem Zwillingsstreckwerk einer Spinnmaschine.

Publications (3)

Publication Number Publication Date
EP2551389A2 EP2551389A2 (fr) 2013-01-30
EP2551389A3 EP2551389A3 (fr) 2015-03-25
EP2551389B1 true EP2551389B1 (fr) 2016-04-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12004346.8A Active EP2551389B1 (fr) 2011-07-25 2012-06-08 Dispositif d'étanchéification pour un métier à tisser

Country Status (4)

Country Link
EP (1) EP2551389B1 (fr)
JP (1) JP6075988B2 (fr)
CN (1) CN202830294U (fr)
CH (1) CH705310A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020126876A1 (de) 2020-10-13 2022-04-14 Maschinenfabrik Rieter Ag Verdichtungsvorrichtung für eine Spinnmaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7251345B2 (ja) * 2019-06-19 2023-04-04 株式会社豊田自動織機 精紡機
CN110453376A (zh) * 2019-08-06 2019-11-15 深圳全棉时代科技有限公司 一种气刺加固纤维网的生产非织造布的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5735579Y2 (fr) * 1978-03-22 1982-08-06
JPH0725313U (ja) * 1993-10-19 1995-05-12 株式会社京宗技研 ダクト接続クリップ
JP3826558B2 (ja) * 1998-03-25 2006-09-27 村田機械株式会社 紡績機における空気供給システム
DE10145444A1 (de) * 2001-09-14 2003-04-03 Rieter Ag Maschf Spinnmaschine mit Verdichtungseinrichtung
JP2004107830A (ja) * 2002-09-19 2004-04-08 Mas Fab Rieter Ag 集束装置を備えた紡績機
DE102005044967B4 (de) * 2005-09-20 2015-06-03 Maschinenfabrik Rieter Ag Absaugeinrichtung für ein Streckwerk
CN100422409C (zh) * 2006-02-21 2008-10-01 宁波韵升股份有限公司 一种纺纱机纤维须条集聚器的空气导向装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020126876A1 (de) 2020-10-13 2022-04-14 Maschinenfabrik Rieter Ag Verdichtungsvorrichtung für eine Spinnmaschine

Also Published As

Publication number Publication date
JP6075988B2 (ja) 2017-02-08
EP2551389A2 (fr) 2013-01-30
CN202830294U (zh) 2013-03-27
JP2013023808A (ja) 2013-02-04
CH705310A1 (de) 2013-01-31
EP2551389A3 (fr) 2015-03-25

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