EP1431432B1 - Dispositif pour produire un filet - Google Patents

Dispositif pour produire un filet Download PDF

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Publication number
EP1431432B1
EP1431432B1 EP03024832A EP03024832A EP1431432B1 EP 1431432 B1 EP1431432 B1 EP 1431432B1 EP 03024832 A EP03024832 A EP 03024832A EP 03024832 A EP03024832 A EP 03024832A EP 1431432 B1 EP1431432 B1 EP 1431432B1
Authority
EP
European Patent Office
Prior art keywords
inlet opening
arrangement according
staple fibre
deflecting
channel
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.)
Expired - Lifetime
Application number
EP03024832A
Other languages
German (de)
English (en)
Other versions
EP1431432A1 (fr
Inventor
Gerd Stahlecker
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 EP1431432A1 publication Critical patent/EP1431432A1/fr
Application granted granted Critical
Publication of EP1431432B1 publication Critical patent/EP1431432B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
    • 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
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/38—Channels for feeding fibres to the yarn forming region

Definitions

  • the invention relates to a device for producing a spun yarn from a staple fiber strand, comprising a feed channel having an outlet opening for feeding the staple fiber strand, with a stationary spindle-like component following the outlet opening with a thread withdrawal channel having an inlet opening, with compressed air nozzles located between outlet opening and inlet opening connected vortex chamber for generating a vortex flow around the inlet opening, with a substantially annularly surrounding the spindle-like component exhaust air duct and arranged in the feed channel, the staple fiber strand to form a swirl barrier deflecting fiber guide surfaces.
  • a device of this type is known from EP 0 854 214 B1 prior art.
  • a staple fiber bundle coming from a drafting device is passed through a feed channel to the inlet port of a yarn withdrawal channel, first leading the front ends of the fibers held in the staple fiber strand into the yarn withdrawal channel, while trailing free fiber ends are splayed and caught by the swirling flow and around the already located in the inlet opening of the thread withdrawal channel, ie integrated front ends are turned around, whereby a thread largely true rotation is generated.
  • helical fiber guide surfaces are provided as a swirl barrier, wherein the helix has the same direction of rotation as the turbulence and extends over a circumferential angle of 90 ° to 120 °.
  • the helix is formed by an insert in a sleeve and fills about half the cross section of the sleeve, whereby the remaining part of the cross-section forms the feed channel.
  • the fibers of the staple fiber bandage rest continuously on this spiral in the feed channel.
  • the invention is based on the object to intensify the effect of the swirl barrier even more.
  • the object is achieved in that the feed channel is meandering and the fiber guide surfaces are formed as Umlenkkanten, between which the staple fiber strand is free of support.
  • the last deflecting edge in the running direction of the staple fiber composite is arranged eccentrically to the inlet opening of the thread withdrawal channel. This increases the effect of the last deflection edge, in particular if it is arranged in the immediate vicinity of the inlet opening of the thread withdrawal channel.
  • At least one deflection is additionally provided with a profiling.
  • the effect of the swirl barrier is even more intense.
  • the profiling may be at least one arranged in the direction of the staple fiber composite wedge-shaped groove, whereby the individual fibers of the staple fiber composite separated and clamped in a certain way.
  • a plurality of very small notch-like grooves may be provided for the same purpose.
  • FIG. 1 shows a device with which a loose staple fiber strand 2 supplied through a feed channel 1 in the direction of travel A is given a rotation in a swirl chamber 3, so that a spun yarn 4 is produced, which is drawn off in the withdrawal direction B by a yarn withdrawal channel 5.
  • a fluid device generates in the vortex chamber 3 by blowing compressed air through tangentially into the vortex chamber 3 opening compressed air nozzles 6 a vortex flow. The escaping air is discharged via the exhaust duct 7, wherein this has an annular cross-section around a spindle-shaped stationary component 8 around, in which the thread withdrawal channel 5 is arranged.
  • a swirl barrier 10 is provided, which will be described in detail later.
  • the fibers to be spun from a delivery roller pair 11, 12 are held on the one hand in the staple fiber structure 2 and are thus guided from the outlet opening 9 of the feed channel 1 substantially without rotation into the yarn withdrawal channel 5.
  • the fibers are exposed in the region between the feed channel 1 and the thread withdrawal channel 5 to the action of the vortex flow, by which they or at least their end portions are radially expelled from the inlet opening 13 of the thread withdrawal channel 5.
  • the threads 4 produced by the method described hereby show a core of fibers or fiber zones extending essentially in the thread longitudinal direction without significant rotation and an outer region in which the fibers or fiber regions are rotated around the core.
  • this thread construction comes about by the fact that leading ends of fibers, in particular those whose trailing regions are still held upstream of the feed channel 1, pass substantially directly into the yarn withdrawal channel 5, but that trailing fiber regions, especially if they are in the entrance region the feed channel 1 are no longer held, pulled by vortex formation from the staple fiber strand 2 and then rotated about the resulting thread 4.
  • fibers are involved at the same time both in the resulting thread 4, whereby they are pulled through the yarn withdrawal channel 5, as well as the vortex flow, which accelerates centrifugally, ie from the inlet opening 13 of the thread withdrawal channel 5, and withdraws into the exhaust duct 7 ,
  • the drawn by the turbulent flow from the staple fiber strand 2 fiber regions form a opening into the inlet opening 13 of the yarn withdrawal channel 5 fiber vortex, the longer portions spiral around the outside of the spindle-shaped member 8 and in this spiral against the force of the flow in the exhaust duct 7 against the inlet port 13th the thread withdrawal channel 5 are pulled.
  • fiber guide surfaces are provided in the feed channel 1, which deflect the staple fiber strand 2 to form the swirl barrier 10.
  • the feed channel 1 runs meandering, and the fiber guide surfaces are additionally formed as deflection surfaces 14,15,16, between which the staple fiber strand 2 is free of support.
  • this staple fiber strand 2 is indicated only by dash-dotted lines, and it can be seen that it rests only on the deflection edges 14,15 and 16 on the fiber guide surfaces.
  • the advantage over the prior art is that the swirl barrier 10 is very intensive and at the same time increases in its effect from the first deflection edge 14 to the last deflection edge 16.
  • the last deflection edge 16 extending in the running direction A of the staple fiber structure 2 runs eccentrically to the inlet opening 13 of the thread withdrawal channel 5 and lies in the immediate vicinity of this inlet opening 13. Overall, three deflection edges 14,15,16 are provided.
  • At least one deflecting edge 15 can additionally have a profiling 17, whereby the effect of the swirl barrier 10 is reinforced again.
  • the profiling 17 is part of the deflecting edge 15 containing insert 18 in a support sleeve 19, see also Figure 1, wherein the insert 18, a second insert 20 is assigned to form the swirl barrier 10, which in turn includes the deflection edges 14 and 16.
  • the profiling 17 is formed as a wedge-shaped groove 21, while according to Figure 3, the profiling 17 consists of a plurality of notch-like grooves 22.
  • the fibers belonging to the staple fiber structure 2 are better separated and optionally pinched, which enhances the effect of the swirl barrier 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (7)

  1. Dispositif de production d'un fil filé à partir d'une mèche de fibres discontinues comprenant un canal d'amenée comportant une ouverture de sortie pour l'amenée de la mèche de fibres discontinues et un composant fixe prévu sous forme de broche placé en aval de l'ouverture de sortie comportant un canal d'évacuation du fil présentant une ouverture d'entrée, une chambre de turbulence disposée entre l'ouverture de sortie et l'ouverture d'entrée et raccordée à des buses d'air comprimé pour créer un courant tourbillonnaire autour de l'ouverture d'entrée, un canal d'évacuation d'air entourant le composant prévu sous forme de broche de manière sensiblement annulaire ainsi que des surfaces de guidage des fibres disposées dans le canal d'amenée renvoyant la mèche de fibres discontinues pour constituer un cliquet de torsion, caractérisé en ce que le canal d'amenée (1) s'étend à la manière de méandres et les surfaces de guidage sont prévues sous forme d'arêtes de renvoi (14, 15, 16) entre lesquelles la mèche de fibres discontinues (2) est exempte d'appui.
  2. Dispositif selon la revendication 1, caractérisé en ce que la dernière arête de renvoi (16) en direction du défilement (A) de la mèche de fibres discontinues (2) est disposée excentriquement par rapport à l'ouverture d'entrée (13) du canal d'évacuation du fil (5).
  3. Dispositif selon la revendication 2, caractérisé en ce que la dernière arête de renvoi (16) est disposée à proximité immédiate de l'ouverture d'entrée (13).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que trois arêtes de renvoi (14, 15, 16) sont prévues au total.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce qu'au moins une arête de renvoi (15) est par ailleurs pourvue d'un profil (17).
  6. Dispositif selon la revendication 5, caractérisé en ce que le profil (17) comporte au moins une rainure (21) en biseau disposée en direction du défilement (A) de la mèche de fibres discontinues (2).
  7. Dispositif selon la revendication 6, caractérisé en cequ'une pluralité de gorges (22) en forme d'encoches est prévue.
EP03024832A 2002-12-17 2003-10-31 Dispositif pour produire un filet Expired - Lifetime EP1431432B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10261011A DE10261011A1 (de) 2002-12-17 2002-12-17 Vorrichtung zum Herstellen eines gesponnenen Fadens
DE10261011 2002-12-17

Publications (2)

Publication Number Publication Date
EP1431432A1 EP1431432A1 (fr) 2004-06-23
EP1431432B1 true EP1431432B1 (fr) 2007-01-03

Family

ID=32336599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03024832A Expired - Lifetime EP1431432B1 (fr) 2002-12-17 2003-10-31 Dispositif pour produire un filet

Country Status (6)

Country Link
US (1) US7080502B2 (fr)
EP (1) EP1431432B1 (fr)
JP (1) JP2004197292A (fr)
CN (1) CN100451192C (fr)
AT (1) ATE350522T1 (fr)
DE (2) DE10261011A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102465363A (zh) * 2010-11-05 2012-05-23 村田机械株式会社 纺纱机械

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1682702B1 (fr) * 2003-11-11 2010-05-19 Maschinenfabrik Rieter Ag Emplacement de filage comprenant un element de guidage des fibres
DE102006018249A1 (de) * 2006-04-13 2007-10-18 Wilhelm Stahlecker Gmbh Spindelförmiges Bauteil für eine Luftdüsenspinnvorrichtung mit einem Injektionskanal
JP5162975B2 (ja) * 2007-06-21 2013-03-13 村田機械株式会社 紡績装置
DE102011054302A1 (de) * 2011-10-07 2013-04-11 Maschinenfabrik Rieter Ag Garnbildungselement für eine Spinnstelle einer Luftspinnmaschine mit einem Drallstoppelement
DE102012101001A1 (de) * 2012-02-08 2013-08-08 Maschinenfabrik Rieter Ag Garnbildungselement für eine Spinnstelle einer Luftspinnmaschine mit einer wendelförmigen Führung sowie Verfahren zur Herstellung eines Garns
BG111170A (bg) * 2012-03-19 2013-09-30 "Д-А-ДИНКО БАХОВ" ЕТ"D-A-Dinko Bahov" Et Метод и устройство за изпридане на прежда с въздушен вихър
CH706923A1 (de) * 2012-09-07 2014-03-14 Rieter Ag Maschf Spinnstelle einer Luftspinnmaschine.
CH708620A1 (de) * 2013-09-30 2015-03-31 Rieter Ag Maschf Faserführungselement für eine Spinndüse einer Luftspinnmaschine sowie damit ausgestattete Spinnstelle.
CN103526363B (zh) * 2013-10-30 2016-01-20 吴江市科时达纺织有限公司 弯管假捻器
EP3859061A1 (fr) * 2020-01-30 2021-08-04 Saurer Intelligent Technology AG Dispositif de réception d'une mèche de fibres
CN116516532B (zh) * 2023-06-29 2023-09-15 克州润华纺织科技有限公司 一种包芯纱生产设备及生产工艺

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4837117A (en) * 1986-12-16 1989-06-06 E. I. Du Pont De Nemours And Company Composites of stretch broken aligned fibers of carbon and glass reinforced resin
US5159806A (en) * 1989-11-14 1992-11-03 Murata Kikai Kabushiki Kaisha Apparatus for producing spun yarns
JPH0674530B2 (ja) * 1991-07-30 1994-09-21 村田機械株式会社 紡績装置
JPH10204731A (ja) * 1997-01-16 1998-08-04 Murata Mach Ltd 紡績装置
EP0990719B1 (fr) * 1998-10-02 2003-05-28 W. SCHLAFHORST AG & CO. Métier à filer
DE10201577A1 (de) * 2002-01-17 2003-07-31 Schlafhorst & Co W Spinnvorrichtung zur Herstellung eines gesponnenen Fadens mittels eines umlaufenden Luftstroms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102465363A (zh) * 2010-11-05 2012-05-23 村田机械株式会社 纺纱机械
CN102465363B (zh) * 2010-11-05 2016-06-01 村田机械株式会社 纺纱机械

Also Published As

Publication number Publication date
DE10261011A1 (de) 2004-07-08
CN100451192C (zh) 2009-01-14
ATE350522T1 (de) 2007-01-15
DE50306178D1 (de) 2007-02-15
US7080502B2 (en) 2006-07-25
CN1508307A (zh) 2004-06-30
US20050204720A1 (en) 2005-09-22
EP1431432A1 (fr) 2004-06-23
JP2004197292A (ja) 2004-07-15

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