EP2412852B1 - Banc d'étirage pour un ensemble de fibres discontinues et agrégat de rouleaux de pression correspondant - Google Patents

Banc d'étirage pour un ensemble de fibres discontinues et agrégat de rouleaux de pression correspondant Download PDF

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Publication number
EP2412852B1
EP2412852B1 EP11175134.3A EP11175134A EP2412852B1 EP 2412852 B1 EP2412852 B1 EP 2412852B1 EP 11175134 A EP11175134 A EP 11175134A EP 2412852 B1 EP2412852 B1 EP 2412852B1
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EP
European Patent Office
Prior art keywords
dust guard
axle
cover
holding fixture
top roller
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
EP11175134.3A
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German (de)
English (en)
Other versions
EP2412852A2 (fr
EP2412852A3 (fr
Inventor
Gerd Stahlecker
Karlheinz Huber
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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Publication of EP2412852A2 publication Critical patent/EP2412852A2/fr
Publication of EP2412852A3 publication Critical patent/EP2412852A3/fr
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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
    • D01H5/74—Rollers or roller bearings
    • D01H5/80—Rollers or roller bearings with covers; Cots or covers
    • 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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations

Definitions

  • the invention relates to a drafting system for warping a staple fiber strand with at least two drivable lower rollers and upper rollers which can be pressed thereon and with a holding body for holding at least one of the upper rollers, an axle mounted on the holding body and at least one sleeve rotatably mounted on the axle with a rubber-elastic spaced from the holding body Reference contains.
  • the invention further relates to a printing roll unit for a drafting arrangement distorting a staple fiber structure with a holding body and having an axis fixed to the holding body and at least one sleeve rotatably mounted on the axis, wherein on the sleeve a rubber-elastic cover spaced from the holding body is arranged.
  • Fiber and dust deposits can impair the functioning of drafting systems and pressure roller assemblies and necessitate regular cleaning and maintenance.
  • US-A-2,948,024 and CN-Y-2 135 581 show sleeves, which are arranged on axles and fixed in the assembled state. They act accordingly as an enlarged diameter diameter axis.
  • Object of the present invention is therefore to reduce the susceptibility of drafting and pressure roller assemblies of the type mentioned for fiber and dust deposits.
  • the object is achieved in that the outer circumference of the axis over the entire length between the cover and the holding body of a Dust cover is enclosed and the dust cover is rotatable together with the sleeve.
  • the dust cover is rotatable together with the sleeve.
  • the dust protection thereby has a moving surface in the operating state, the dirt deposits further reduced.
  • the dust cover is rotatably connected to the sleeve and / or the cover and is thus rotatable together with the sleeve freely rotatably mounted on the axis. It is particularly advantageous if the dust cover extends from the cover into the holding body. As a result, dirt deposits on the axle are particularly effectively avoided.
  • the dust protection on the drafting system or on the pressure roller unit can be formed differently.
  • the cover carrying the cover form the dust cover.
  • the sleeve preferably extends from the cover into the holding body. So it is compared to the state of Technique provided an extended sleeve.
  • the outer circumference of the sleeve between the holding body and cover forms a freely accessible from the outside surface, which moves in the operating state.
  • the axis lies inside the sleeve and in the holding body and is thereby covered. This embodiment has the advantage that no additional parts must be provided on the top roller for dust protection.
  • the dust protection by a component that connects to the sleeve.
  • the adjoining the sleeve component may be attached to the sleeve and / or the cover.
  • a complete coverage of the axis in the region between the holding body and the rubber-elastic cover can also be achieved.
  • the cover of a different material than the metal sleeve, for example made of plastic can be performed, which also allows easy retrofitting of existing facilities.
  • the dust cover comprises a component which is designed annular, sleeve-shaped or half-shell-shaped. This has the advantage that the component can be easily attached to the sleeve, for example by pressing, clamping or clipping.
  • the dust cover is particularly advantageous when it is arranged on a top roller forming a swirl stop, which can be arranged in the transport direction of the staple fiber assembly downstream of a compressor for a finished distorted fiber structure.
  • a reduction in dust and fiber landing deposits achieved by the cover has a very positive effect on improved operational safety.
  • a relatively narrow reference is used, so that thereby the distance between the holding body and the cover is relatively large.
  • a relatively narrow reference is advantageous in spin-stop rolls, so that despite a relatively low pressure force, a sufficiently high specific pressure can be exerted on the fiber bond to be clamped and the function as Spin stop is achieved.
  • the lowest possible pressure force of the twist stop roller is advantageous in order to minimize the losses due to friction and flexing work.
  • the gap extends at least in the externally accessible area in the axial direction.
  • the holding body includes a region with a concave cylindrical surface which surrounds a part of the outer periphery of the dust cover to form a gap.
  • the concave cylindrical surface prevents fibers or fiber fragments from being drawn into the gap between the holding body and the dust guard by the dust protection rotating during operation and leading to a blockage of the top roller. It is expedient for the concave cylindrical surface to surround at least one part of the outer circumference of the dust protection which lies on the side facing away from the lower roller.
  • the sealing of a rotatable with the sleeve dust cover to the holding body can be further improved if the holding body has a paragraph, which forms seen in axial section with a curved or kinked gap extending with the dust cover.
  • the heel is preferably step-shaped or shoulder-shaped, so that a kinked gap is created between the holding body and the dust guard.
  • a non-linear gap reduces the risk of fibers accumulating in the nip leading to blockage of the top roll.
  • a pressure roller assembly is an independently tradable assembly that is often sold separately for retrofitting existing drafting equipment. When inserted into the drafting system, the pressure roller assembly is attached to a load carrier of the drafting system.
  • the printing roll unit consists of a holding body and two top rollers. Prefers the upper rollers are designed as Druckwalzenzwillinge.
  • the pressure roller assembly preferably contains at least one pair of pressure rollers with two sleeves rotatably mounted on the axle, on each of which a rubber-elastic reference is arranged, wherein between one of the covers and the holding body, a dust cover enclosing the axis is provided, which is rotatable about the axis. It can be used for two adjacent drafting systems.
  • the first pair of pressure rollers contains the output top rollers for the drafting system, at the terminal line to be formed with the lower roller, the distortion of the staple fiber strand is completed.
  • the second twin pressure roll contains the twist stop rolls.
  • the printing roll unit may further include compressors, wherein at least one compressor with a tunnel-shaped compression channel is arranged between the output top roll and the spiral stop roll.
  • the pressure roller unit can be placed on a lower roller, namely the output lower roller. When placing the Druckwatzenaggregats on the lower roller and the compressor can also sit on the lower roller.
  • a drafting system 1 which contains two pairs of rollers 2 and 3.
  • the pair of rollers 2 includes a drivable lower roller 4 and an upper roller 5 pressed thereon.
  • the roller pair 3 contains a drivable Lower roller 6 and an upper roller 7 that can be pressed against it.
  • the upper rollers 5, 7 are not driven, can rotate freely and thus run with them when placed on the respective lower roller 4, 6.
  • the roller pairs 2 and 3 of the drafting system 1 transport a staple fiber strand 8 in the transport direction A and distort it to a desired fineness.
  • the lower roller 6 is driven at a greater peripheral speed than the lower roller 4.
  • the pair of rollers 2 may be preceded by further pairs of rollers.
  • the rollers 4 and 5 of the roller pair 2 are assigned in a conventional manner guide straps 9.
  • the ceremoniessriemchen 9 lead the fiber structure 8 in the main drafting zone of the drafting system. 1
  • the pair of rollers 3 is referred to as output roller pair of the drafting system 1.
  • the distortion of the staple fiber strand 8 is completed.
  • the finished distorted fiber composite in withdrawal direction B is fed to a twisting element (not shown), for example a ring spindle, where it is twisted to form a thread 14.
  • the upper roller 13 performs the function of a swirl stop roller and prevents the rotation of the thread 14 in the compression zone where the compressor 11 is running back.
  • the upper rollers 7 and 13 each contain an axis 15 and 16.
  • the axes 15 and 16 are held by a holding body 17.
  • the holding body 17 is part of a pressure roller assembly.
  • the present pressure roller assembly 18 includes the holding body 17 and the two top rollers 7 and 13. It may also contain the compressor 11 next.
  • the printing roll unit 18 is used as a preassembled module in the drafting system 1 and attached in a manner not shown to a load carrier of the drafting system 1, which presses the upper rollers 7 and 13 against the lower roller 6.
  • the upper rollers 7 and 13 are formed as Druckwalzenzwillinge.
  • FIG. 2 The design of the upper roller 13 as Druckwalzenzwilling is in FIG. 2 shown in more detail. It can be seen that the axis 16 of the top roller 13 is accommodated in the holding body 17 of the pressure roller assembly 18. The axis 16 protrudes with both ends of the holding body 17. On each of the ends of a sleeve 19 is mounted freely rotatable. On each of the sleeves 19, a rubber-elastic cover 20 is attached.
  • the rubber-elastic cover 20 may include a non-detachably connected to the rubber-elastic material of the cover sleeve which is pressed onto the sleeve 19.
  • the mounting of the sleeve 19 on the axis 16 is shown only schematically and takes place in a conventional manner via two rows of balls. Of course, not shown sealing means are provided to seal the storage to the outside.
  • FIG. 2 it can be seen that the cover 20 is spaced from the holding body 17.
  • the area between the cover 20 and the holding body 17 is designated by the reference numeral 21.
  • the axis 16 is exposed in the region 21 and fiber fly accumulations can occur there.
  • a dust guard 22 is provided in the region 21, which encloses the outer circumference of the axis 16 in the region 21 between the cover 20 and the holding body 17.
  • the dust cover 22 is formed by the sleeve 19.
  • the sleeve 19 extends from the cover 20 into the holding body 17.
  • the outer circumference of the axis 16 is on the entire length between reference 20 and holding body 17 covered, so that dirt deposits are prevented there.
  • the sleeve 19 may also be formed shorter than shown, that is not extended compared to the prior art, so that it is not substantially longer than the reference 20.
  • an additional component may be provided, which is attached to the sleeve 19, for example a ring by pressing, and thereby forms the dust cover 22.
  • the holding body 17 includes a portion 24 having a concave cylindrical surface which surrounds a portion of the outer periphery of the rotatable dust guard 22 to form a gap 23.
  • the region 24 is arranged such that the concave cylindrical surface surrounds at least one part of the outer circumference of the dust protection 22 lying on the side of the axis 16 remote from the lower roller 6.
  • the holding body 17 also has a shoulder 25 which - in the axial section of FIG. 2 seen - forms a kinked gap 23 with the dust cover 22.
  • a surface is defined on the holding body 17, which faces the axial end surface of the dust cover 22 and the sleeve 19.
  • the kinked gap 23 formed by the region 24 and the shoulder 25 very effectively prevents blocking of the sleeve 19 by fiber fly.

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

Claims (9)

  1. Groupe de cylindres de compression (18) pour un banc d'étirage (1) qui étire un assemblage de fibres discontinues (8), comprenant au moins un cylindre supérieur (13), lequel possède un axe (16) fixé à un corps de maintien (17) et au moins une douille (19) montée rotative sur l'axe (16) et un revêtement élastique gommeux (20) espacé du corps de maintien (17) est disposé sur la douille (19), le pourtour extérieur de l'axe (16) étant entouré d'une protection antipoussière (22) sur toute sa longueur entre le revêtement (20) et le corps de maintien (17), caractérisé en ce que la protection antipoussière (22) peut tourner autour de l'axe (16).
  2. Groupe de cylindres de compression selon la revendication 1, caractérisé en ce que la protection antipoussière (22) s'étend du revêtement (20) jusqu'à l'intérieur du corps de maintien (17).
  3. Groupe de cylindres de compression selon l'une des revendications 1 à 2, caractérisé en ce que la douille (19) forme la protection antipoussière (22).
  4. Groupe de cylindres de compression selon l'une des revendications 1 à 2, caractérisé en ce qu'au moins un élément structural rattaché à la douille (19) forme la protection antipoussière (22).
  5. Groupe de cylindres de compression selon l'une des revendications 1 à 4, caractérisé en ce que le corps de maintien (17) contient une zone (24) ayant une surface cylindrique concave qui entoure une partie du pourtour extérieur de la protection antipoussière (22) en formant un interstice (23).
  6. Groupe de cylindres de compression selon l'une des revendications 1 à 5, caractérisé en ce que le corps de maintien (17) possède un épaulement (25) qui forme avec la protection antipoussière (22) un interstice (23) qui, vue en coupe axiale, est curviligne ou flambé.
  7. Banc d'étirage (1) destiné à étirer un assemblage de fibres discontinues (8), comprenant au moins deux cylindres inférieurs (4, 6) pouvant être entraînés et des cylindres supérieurs (5, 7, 13) qui peuvent être comprimés sur ceux-ci, ainsi qu'un corps de maintien (17) destiné à maintenir au moins l'un des cylindres supérieurs (7, 13), lequel contient un axe (15, 16) fixé au corps de maintien (17) et au moins une douille (19) montée rotative sur l'axe (16) pourvue d'un revêtement élastique (20) espacé du corps de maintien (17), le pourtour extérieur de l'axe (16) étant entouré d'une protection antipoussière (22) sur toute sa longueur entre le revêtement (20) et le corps de maintien (17), caractérisé en ce que la protection antipoussière (22) peut tourner autour de l'axe (16).
  8. Banc d'étirage selon la revendication 7, caractérisé en ce que la protection antipoussière (22) est disposée sur un cylindre supérieur (13) formant un dispositif antitorsion, lequel est disposé, dans le sens du transport (A) de l'assemblage de fibres discontinues (8), en aval d'un condenseur (11) pour un assemblage de fibres étiré terminé.
  9. Banc d'étirage selon la revendication 7 ou 8, caractérisé en ce que le corps de maintien (17) contient une zone (24) ayant une surface cylindrique concave qui entoure, en formant un interstice (23), au moins une partie du pourtour extérieur de la protection antipoussière (22) qui se trouve du côté de l'axe (16) à l'opposé du cylindre inférieur (6).
EP11175134.3A 2010-07-27 2011-07-25 Banc d'étirage pour un ensemble de fibres discontinues et agrégat de rouleaux de pression correspondant Active EP2412852B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010032341A DE102010032341A1 (de) 2010-07-27 2010-07-27 Streckwerk für einen Stapelfaserverband und Druckwalzenaggregat dafür

Publications (3)

Publication Number Publication Date
EP2412852A2 EP2412852A2 (fr) 2012-02-01
EP2412852A3 EP2412852A3 (fr) 2015-03-04
EP2412852B1 true EP2412852B1 (fr) 2016-09-14

Family

ID=44512674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11175134.3A Active EP2412852B1 (fr) 2010-07-27 2011-07-25 Banc d'étirage pour un ensemble de fibres discontinues et agrégat de rouleaux de pression correspondant

Country Status (4)

Country Link
EP (1) EP2412852B1 (fr)
CN (1) CN102345191B (fr)
BR (1) BRPI1103174B1 (fr)
DE (1) DE102010032341A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH713916A1 (de) * 2017-06-23 2018-12-28 Rieter Ag Maschf Verdichtungsvorrichtung für eine Spinnmaschine.
JP7180333B2 (ja) * 2018-12-04 2022-11-30 株式会社豊田自動織機 紡機の繊維束集束装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB724483A (en) * 1953-05-12 1955-02-23 Textile Engineering Corp Improvements in and relating to top rolls for spinning and roving frames
DE970370C (de) * 1950-05-30 1958-09-11 Skf Kugellagerfabriken Gmbh Oberwalzen fuer Spinnereimaschinen
US2948024A (en) * 1956-06-29 1960-08-09 Kenneth P Swanson Lint sealing assembly for textile drafting rolls
DE1164288B (de) * 1961-08-01 1964-02-27 Skf Kugellagerfabriken Gmbh Oberwalze fuer Spinnereimaschinen-Streckwerke
CN2135581Y (zh) * 1992-05-27 1993-06-09 李瑶兴 防绕皮辊

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228088A (en) * 1963-05-24 1966-01-11 Ind Schacfiler Upper roller for spinning machine drawing mechanisms
CH680594A5 (en) * 1989-09-08 1992-09-30 Rieter Ag Maschf Bearings for roller - has tubular cover over the journals and bearings extending into gap in the roller to exclude dust and fly
DE10019636A1 (de) * 2000-04-19 2001-10-25 Temco Textilmaschkomponent Andruckrolle
JP2003041440A (ja) * 2001-07-25 2003-02-13 Nippon Boseki Yohin Kenkyusho:Kk トップローラ
DE10159048A1 (de) * 2001-11-30 2003-06-18 Rieter Ag Maschf Spinnmaschine
CN2622207Y (zh) * 2003-06-04 2004-06-30 上海市纺织机械研究所 一种带防尘架的集聚纺纱装置上罗拉组件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970370C (de) * 1950-05-30 1958-09-11 Skf Kugellagerfabriken Gmbh Oberwalzen fuer Spinnereimaschinen
GB724483A (en) * 1953-05-12 1955-02-23 Textile Engineering Corp Improvements in and relating to top rolls for spinning and roving frames
US2948024A (en) * 1956-06-29 1960-08-09 Kenneth P Swanson Lint sealing assembly for textile drafting rolls
DE1164288B (de) * 1961-08-01 1964-02-27 Skf Kugellagerfabriken Gmbh Oberwalze fuer Spinnereimaschinen-Streckwerke
CN2135581Y (zh) * 1992-05-27 1993-06-09 李瑶兴 防绕皮辊

Also Published As

Publication number Publication date
BRPI1103174A2 (pt) 2012-12-11
EP2412852A2 (fr) 2012-02-01
EP2412852A3 (fr) 2015-03-04
DE102010032341A1 (de) 2012-02-02
CN102345191A (zh) 2012-02-08
BRPI1103174B1 (pt) 2020-01-21
CN102345191B (zh) 2016-02-24

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