EP2412852A2 - Banc d'étirage pour un ensemble de fibres discontinues et agrégat de rouleaux d'impression correspondant - Google Patents

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

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Publication number
EP2412852A2
EP2412852A2 EP20110175134 EP11175134A EP2412852A2 EP 2412852 A2 EP2412852 A2 EP 2412852A2 EP 20110175134 EP20110175134 EP 20110175134 EP 11175134 A EP11175134 A EP 11175134A EP 2412852 A2 EP2412852 A2 EP 2412852A2
Authority
EP
European Patent Office
Prior art keywords
holding body
axis
cover
sleeve
dust
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.)
Granted
Application number
EP20110175134
Other languages
German (de)
English (en)
Other versions
EP2412852A3 (fr
EP2412852B1 (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
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP2412852A2 publication Critical patent/EP2412852A2/fr
Publication of EP2412852A3 publication Critical patent/EP2412852A3/fr
Application granted granted Critical
Publication of EP2412852B1 publication Critical patent/EP2412852B1/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
    • D01H5/74—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 fixed to 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 rotatably mounted on the axis sleeve, 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.
  • 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 is enclosed on the entire length between the cover and the holding body of a dust cover.
  • 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. It is therefore provided in comparison to the prior art, an elongated 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.
  • 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.
  • This is u. a. also because a relatively narrow reference is used in these spin-stop rollers, so that the distance between the holder body and the cover is relatively large.
  • a relatively narrow reference is advantageous in spin-stop rolls, so that despite a relatively small pressure force, a sufficiently high specific pressure can be exerted on the fiber bond to be clamped and the function is achieved as a twist stop.
  • 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 holding body Preferably extends the gap 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.
  • the concave cylindrical surface prefferent 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.
  • the pressure roller assembly 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.
  • the top 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 axis, on each of which a rubber-elastic reference is arranged, wherein between one of the covers and the holding body, an axis enclosing dust cover is provided. 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 its to be formed with the lower roller nip the delay 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 pressure roller assembly 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 bottom roller 4 and an upper roller 5 pressed thereon.
  • the pair of rollers 3 includes a drivable bottom roller 6 and an upper roller 7 which can be pressed thereon.
  • the top rollers 5, 7 are not driven, can rotate freely and thereby run on the respective lower roller 4, 6 with.
  • 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 be further upstream roller pairs.
  • 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 structure in the drawing-off 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 located, runs 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 may be part of a printing roll unit.
  • 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 pressure roller assembly 18 is used as a preassembled module in the drafting system 1 and mounted in a manner not shown on a load carrier of the drafting system 1, which presses the top rollers 7 and 13 against the lower roller 6.
  • the upper rollers 7 and 13 are formed as Druckwalzenzwillinge.
  • 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 covered over the entire length between reference 20 and holding body 17, so that dirt deposits are prevented there.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
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 true EP2412852A2 (fr) 2012-02-01
EP2412852A3 EP2412852A3 (fr) 2015-03-04
EP2412852B1 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018234912A1 (fr) * 2017-06-23 2018-12-27 Maschinenfabrik Rieter Ag Dispositif de compactage pour un métier à filer
CN111270360A (zh) * 2018-12-04 2020-06-12 株式会社丰田自动织机 纺纱机的纤维束集束装置

Family Cites Families (11)

* 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
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
CN2135581Y (zh) * 1992-05-27 1993-06-09 李瑶兴 防绕皮辊
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018234912A1 (fr) * 2017-06-23 2018-12-27 Maschinenfabrik Rieter Ag Dispositif de compactage pour un métier à filer
CN110741112A (zh) * 2017-06-23 2020-01-31 里特机械公司 用于纺纱机的压实装置
CN111270360A (zh) * 2018-12-04 2020-06-12 株式会社丰田自动织机 纺纱机的纤维束集束装置
CN111270360B (zh) * 2018-12-04 2022-05-17 株式会社丰田自动织机 纺纱机的纤维束集束装置

Also Published As

Publication number Publication date
EP2412852A3 (fr) 2015-03-04
BRPI1103174B1 (pt) 2020-01-21
EP2412852B1 (fr) 2016-09-14
CN102345191B (zh) 2016-02-24
DE102010032341A1 (de) 2012-02-02
CN102345191A (zh) 2012-02-08
BRPI1103174A2 (pt) 2012-12-11

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