EP2740821B1 - Luftspinnvorrichtung - Google Patents

Luftspinnvorrichtung Download PDF

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Publication number
EP2740821B1
EP2740821B1 EP13005379.6A EP13005379A EP2740821B1 EP 2740821 B1 EP2740821 B1 EP 2740821B1 EP 13005379 A EP13005379 A EP 13005379A EP 2740821 B1 EP2740821 B1 EP 2740821B1
Authority
EP
European Patent Office
Prior art keywords
sliver
drafting
unit
air spinning
air
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
EP13005379.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2740821A1 (de
Inventor
Thomas Weide
Chandrassekaran Seshayer
Roland Werner
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.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Germany GmbH and Co KG
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Publication date
Application filed by Saurer Germany GmbH and Co KG filed Critical Saurer Germany GmbH and Co KG
Publication of EP2740821A1 publication Critical patent/EP2740821A1/de
Application granted granted Critical
Publication of EP2740821B1 publication Critical patent/EP2740821B1/de
Active legal-status Critical Current
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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • 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
    • D01H5/28—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by inserting twist during drafting

Definitions

  • the invention relates to an air spinning device for producing a yarn, in which a sliver stretched by means of a drafting system, then fed to the air spinning unit to produce a Gamwindung, withdrawn from the air spinning unit and wound up on a cross-wound bobbin.
  • a sliver In air spinning, a sliver is distorted to final fineness at high overall distortions and high production speeds in a drafting system.
  • the sliver emerging between the exit rollers of the drafting system passes through a nozzle block to the inlet opening of a hollow spinning spindle.
  • the free fiber ends Upon entry of the sliver in the spinning spindle, the free fiber ends are wound around the conically shaped spindle head of the spinning spindle by means of a circulating air flow and wrap during retraction of the thread in the spindle spirally around the so-called core fibers.
  • the core fibers form together with the so-called Umwindefasern a new thread, which is subtracted, monitored by a yarn cleaner, optionally cleaned and wound up.
  • the drafting equipment mounted directly in front of the air-spinning unit is of particular importance. This leads to a refinement and a further parallelization of the fibers.
  • the aim is to produce as uniform a sliver as possible in order to be able to spin a yarn that is as uniform as possible.
  • a drafting system usually several consecutive pairs of rollers are arranged. Each of these roller pairs consists of a lower roller and an upper pressure roller. The sliver is transported through the pairs of rollers to the air spinning unit. Since the peripheral speeds of the roller pairs increase in the direction of fiber travel, the so-called distortion occurs. Viewed in the fiber direction, the last two pairs of rollers form the main draft zone; the section in front of it the Vorverzugszone.
  • drafting systems are equipped with one or two Vorverzugszone (s), which are accordingly referred to as three-roller drafting respectively four-roller drafting.
  • Quality fluctuations in the sliver can no longer be compensated for after the drafting system and can be found again as quality fluctuations in the yarn.
  • even slight negative influences on the drafting process such as the air flow generated by the rotational speed of the drafting system exit rollers, distract individual fibers from the sliver, sometimes even dissolving out and thereby impair the yarn quality. This deterioration increases disproportionately with an increase in the spinning speed.
  • the DE 10 2005 022 186 A1 describes a method for producing an air-spun yarn, in which an already provided with low rotation Flyerlunte the drafting system is presented.
  • a slight false twist can be given by a specific arrangement of the output rollers of the drafting of the Flyerlunte in the main drafting zone.
  • a spinning machine in which a false twist device consisting of two hollow rollers is arranged in the direction of fiber flow after the spinning unit. The rotation is here granted to the already finished spun yarn, thereby a solid, uniform spun yarn with low hairiness can be spun.
  • the DE 20 42 387 A1 describes an apparatus and a method for producing a staple fiber yarn having a torsional structure over the entire cross section.
  • a Flyerlunte has been warped to final Garnfech, there is a uniform and continuous rotation distribution by means of a twist organ.
  • Characteristic here is that the rotation is carried out in a negative draft zone, which is arranged in the direction of fiber travel after the known drafting with exclusively positive default.
  • the yarn produced in this way has process-typical "corkscrews"; This phenomenon arises after the rotation, since turn up some fiber groups while others contract. To eliminate this, another, so-called Nachstrecklui can be followed.
  • EP 1 853 755 B1 discloses a flyless spinning process and a drafting apparatus to produce fine to very fine yarns of less than 10 tex without the use of a flyer.
  • a first drafting system which is usually arranged in the spinning preparation, a thin sliver of less than 2.5 ktex is produced.
  • This sliver is granted according to the invention a protective rotation of five or more rotations per meter to prevent it during transport and during further processing to Albertvermann when pulling the sliver in the second drafting or air-jet unit.
  • the object of the present invention is to propose a device which minimizes the fiber deflection, in particular due to the air flow, due to the rotational speeds of the drafting system exit rollers.
  • the drafting a false twist member is arranged, which grants rotations with alternating direction of rotation of the sliver before it warped in the main drafting zone Gamfech and the air-spinning unit is supplied. Due to the constant change of the direction of performance, there are sections of rotations that run into the main drafting zone and lead to the desired improvement. The rotation makes the sliver more compact and edge fibers are integrated into the middle. This prevents that individual fibers are deflected by the air flow in front of the nip of the pair of output rollers from the sliver. As a result, there is an improvement in yarn uniformity.
  • the drafting system in front of the spinning unit is a four-roller drafting system.
  • the desired homogenization and thus the parallel position of the fibers becomes all the more precise, the more draft zones the drafting system has. In this way, the sliver is warped even more graded.
  • the false twist member is arranged in the second pre-draft zone.
  • the advantage of such an arrangement is that the sliver has already been refined by the first pre-drawn zone, so that more rotations can be applied, which are limited only by the fact that the large distortion in the main draft zone is not hindered.
  • the aim of the invention to "capture" the edge fibers is already achieved by a small number of rotations.
  • the false twist member is a spin tube.
  • the spin tube changes constantly in left and right rotation about its longitudinal axis and thus transmits the alternating rotations on the sliver.
  • Claim 5 describes that the false twist member is a pneumatically actuated nozzle. Due to the corresponding arrangement and admission of air to the air nozzles in the passageway, the sliver is also given alternating rotations about its longitudinal axis, whereby mechanically moving parts are avoided.
  • the invention is not limited to a particular twisting device.
  • FIG. 1 schematically shows a front view of an air-spinning machine 1.
  • These textile machines have a plurality of in series juxtaposed work or spinning stations 2, which are positioned between the end arranged so-called end racks 15, 16.
  • each of the jobs 2 with a template material for example, a stored in a sliver can 3 sliver 4, equipped.
  • each of the jobs 2 has a drafting 5, an air-spinning device 6, a thread take-off device 7, a yarn cleaner 8 and a take-up device.
  • the associated thread-changing device 9 ensures that the yarn 10 produced in the air-spinning unit 6 from the sliver 4 is wound in intersecting layers onto a package 11.
  • This package reel or cross-wound bobbin 11 is, as usual, held in a coil frame, not shown, and is rotated by a coil drive, also not shown.
  • the jobs 2 of the textile machine 1 are preferably supplied by an automatically operating control unit 12, which, guided on rails 13, 14, along the work stations 2 is movable.
  • FIG. 2 shows a drafting system 5 with downstream Lucasspinnaggregat 6 and the passage of the sliver 4.
  • the withdrawn from the sliver can 3 sliver 4 is drawn from the feed rollers arranged as a pair of upper and lower rollers 31, 32 and by means of the upper and lower rollers 33, 34; 35, 36; 39, 40 stretched.
  • the upper and lower rollers 35, 36 cooperate with the straps 37, 38.
  • the upper and lower rollers 39, 40 are arranged as output rollers.
  • the false twist member 41 is arranged after the upper and lower rollers 33, 34 according to the invention.
  • a nozzle device 42 On the input side of the spinning unit 6, a nozzle device 42 is arranged.
  • the nozzles 43, 44 are connected via the line 45 to a compressed air source 46.
  • the air flowing out of the nozzles 43, 44 generates a rotational flow, with which the stretched sliver 4 is acted upon.
  • This is followed by a hollow spinning cone 47 connects.
  • the yarn 10 formed in the interaction of the nozzle device 42 and spinning cone 47 is withdrawn from the spinning unit 6 through the hollow spinning cone 47.
  • the air chamber 48 surrounding the spinning cone 47 is connected to a vacuum source 50 by means of a further line 49. Further details of the spinning process by means of such spinning devices are for example the DE 199 26 492 A1 removable.
  • the sliver 4 is through the pairs of rollers 31, 32; 33, 34; 35, 36; 39,40 transported to the air-spinning unit, wherein the peripheral speeds of the roller pairs increase in the direction of fiber travel.
  • the sliver is warped 2 to 4 times.
  • the sliver 4 is further warped and obtained by the false twist member 41 also an alternating rotation.
  • the sliver 4 receives its final fineness, which corresponds to the yarn count.
  • the upper and lower rollers 39, 40 which are arranged as output rollers, induce an air flow directed at the gusset 54. This airflow can not pass the nip point between the upper and lower rollers 39, 40, and therefore flows to the sides of the upper and lower rollers 39, 40.
  • the pre-stretched sliver 4 reaching into the main draft zone 53 has an alternating rotation according to the invention.
  • the fiber-to-fiber adhesion and thus also the tensile force in the sliver 4 remain large enough to keep the number of fibers blown by the air to the sides of the upper and lower rollers 39, 40 low.
  • these fibers are also fed into the spinning process, resulting in a high quality, air-spun yarn with less hairiness and improved uniformity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP13005379.6A 2012-12-07 2013-11-15 Luftspinnvorrichtung Active EP2740821B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012023985.8A DE102012023985A1 (de) 2012-12-07 2012-12-07 Luftspinnvorrichtung

Publications (2)

Publication Number Publication Date
EP2740821A1 EP2740821A1 (de) 2014-06-11
EP2740821B1 true EP2740821B1 (de) 2016-08-31

Family

ID=49666917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13005379.6A Active EP2740821B1 (de) 2012-12-07 2013-11-15 Luftspinnvorrichtung

Country Status (4)

Country Link
EP (1) EP2740821B1 (ja)
JP (1) JP6207369B2 (ja)
CN (2) CN109972246A (ja)
DE (1) DE102012023985A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017122318A1 (de) * 2017-09-26 2019-03-28 Saurer Spinning Solutions Gmbh & Co. Kg Verdichtereinrichtung
CN109402802A (zh) * 2018-12-21 2019-03-01 苏州大学 基于双涡流技术的假捻变形纱生产设备及方法
JP2021025141A (ja) * 2019-08-01 2021-02-22 村田機械株式会社 紡績機
CN112226861B (zh) * 2020-09-21 2021-10-26 东华大学 一种火草纤维收集装置
CN114197095B (zh) * 2021-11-29 2023-03-24 武汉纺织大学 一种捻向交替加捻卷绕装置及使用方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE487367C (de) * 1929-12-06 Saechsische Maschinenfabrik Vo Drehvorrichtung fuer falsche Drahtgebung der Strecklunte in Streckwerken von Spinnmaschinen
GB348079A (en) * 1930-02-06 1931-05-06 Emil Gminder Improvements in a drawing method and drawing apparatus for producting high drafts
US2091153A (en) * 1936-07-07 1937-08-24 H & B American Machine Company Long draft apparatus and process for drawing textile rovings
US2515299A (en) * 1948-10-19 1950-07-18 Us Rubber Co Apparatus for imparting false twist to strands
DE2042387A1 (de) 1970-08-26 1972-04-20 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Verfahren und Vorrichtung zur Herstellung eines Stapelfasergarnes
JPS58136840A (ja) * 1982-02-08 1983-08-15 Murata Mach Ltd 紡績糸の製造方法
JPS6045615A (ja) * 1983-08-22 1985-03-12 Unitika Ltd 麻繊維の湿潤紡績方法
JPS61152832A (ja) * 1984-12-24 1986-07-11 Murata Mach Ltd ドラフト装置
JPH06330414A (ja) * 1993-05-19 1994-11-29 Murata Mach Ltd 空気式紡績装置
JPH0718522A (ja) * 1993-06-29 1995-01-20 Murata Mach Ltd 空気紡績装置
JP2626571B2 (ja) 1994-07-15 1997-07-02 村田機械株式会社 紡績装置
DE19926492A1 (de) 1998-10-02 2000-04-06 Schlafhorst & Co W Spinnvorrichtung
DE10258720A1 (de) * 2002-12-09 2004-06-24 Wilhelm Stahlecker Gmbh Vorrichtung zum Herstellen eines gesponnenen Fadens
CN1882728B (zh) * 2003-09-12 2010-09-01 里特机械公司 并条-头道粗纱联合机和用于从纤维组中制造粗纱的方法
DE102005009731A1 (de) 2005-03-03 2006-09-07 Rieter Ingolstadt Spinnereimaschinenbau Ag Flyerloses Spinnverfahren sowie Vorrichtung mit einem Streckwerk
DE102005022186A1 (de) 2005-05-13 2006-11-16 Saurer Gmbh & Co. Kg Verfahren zum Herstellen eines luftgesponnenen Fadens
DE102005022187A1 (de) * 2005-05-13 2006-11-16 Saurer Gmbh & Co. Kg Anspinnverfahren an einer Luftspinnmaschine sowie Spinnvorrichtung und Luftspinnmaschine
DE102005035049A1 (de) * 2005-07-27 2007-02-01 Saurer Gmbh & Co. Kg Spinnvorrichtung zur Herstellung eines gesponnenen Fadens mittels eines umlaufenden Luftstroms
JP2012107363A (ja) * 2010-11-18 2012-06-07 Murata Mach Ltd ドラフトローラ、ドラフト装置、及び紡績機

Also Published As

Publication number Publication date
CN103866439A (zh) 2014-06-18
JP2014114535A (ja) 2014-06-26
DE102012023985A1 (de) 2014-06-12
CN109972246A (zh) 2019-07-05
EP2740821A1 (de) 2014-06-11
JP6207369B2 (ja) 2017-10-04

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