EP1587974B1 - Dispositif de fabrication d'un fil file - Google Patents

Dispositif de fabrication d'un fil file Download PDF

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Publication number
EP1587974B1
EP1587974B1 EP03788962A EP03788962A EP1587974B1 EP 1587974 B1 EP1587974 B1 EP 1587974B1 EP 03788962 A EP03788962 A EP 03788962A EP 03788962 A EP03788962 A EP 03788962A EP 1587974 B1 EP1587974 B1 EP 1587974B1
Authority
EP
European Patent Office
Prior art keywords
fiber
channel
guide surface
inlet opening
delivery
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
EP03788962A
Other languages
German (de)
English (en)
Other versions
EP1587974A1 (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 EP1587974A1 publication Critical patent/EP1587974A1/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
    • 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
    • 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
    • D01H4/02—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

Definitions

  • the invention relates to an apparatus for producing a spun yarn from a staple fiber strand supplied by a pair of delivery rolls to an air jet unit, having a fiber feed channel downstream of the feed roll pair having an inlet opening and an outlet opening, which is provided with a deflection edge, otherwise substantially planar and substantially parallel to the nip line of the delivery roller pair extending fiber guide surface containing ends in one of the outlet opening subsequent vortex chamber in the region of an inlet opening of a yarn withdrawal channel with a twist stop serving fiber delivery edge.
  • a device of this kind is by the WO 02/24993 A2 State of the art.
  • a staple fiber strand coming from a drafting unit or other drafting unit is passed through a fiber conveying passage to the entrance of a yarn withdrawal passage, first guiding the leading ends of the fibers held in the staple fiber bond into the yarn withdrawal passage while rear free fiber ends are spread apart and caught by the turbulent flow and around which are already located in the inlet opening of the thread withdrawal channel, integrated front ends are turned around, whereby a thread is generated with substantially true rotation.
  • front and “rear” ends of the fibers in this context refers to the transport direction of the staple fiber strand.
  • the invention is based on the object, in a device of the type mentioned largely to avoid the variations in mass and thereby increase the spinning speed with sufficient thread quality.
  • the object is achieved in that the fiber guide surface is increasingly narrower by lateral boundary walls of the fiber conveying channel and at the latest at the deflection has its smallest width.
  • the fiber delivery channel narrows relatively quickly, so that even at the deflection of the fiber guide surface, the smallest width is reached. This width is substantially maintained up to the fiber delivery edge and causes the fibers to be spun pass largely loss-free through the inlet opening in the thread withdrawal channel. This not only leads to an increase in the thread quality, but also allows much higher delivery speeds and spinning speeds.
  • the device according to the invention can be further developed in that the fiber guide surface has at least approximately its smallest width already at an inlet edge upstream of the deflection edge. This smallest width of the fiber guide surface should not exceed three times the diameter of the inlet opening of the thread withdrawal channel, preferably even at most twice this diameter.
  • the device after FIGS. 1 to 3 and 5 includes a delivery device 1 for supplying a staple fiber staple assembly 2 and an air jet unit 3, in which the staple fiber strand 2, the required for spinning a thread 4 rotation is granted.
  • the delivery device 1 contains a pair of delivery rollers 5, 6, which is arranged upstream of the air-jet unit 3 at a small distance and in which it may be the output rollers of an otherwise not shown drafting system.
  • a drafting system warps in a known manner a fed sliver or a roving to a staple fiber strand 2 of the desired fineness.
  • the delivery device 1 may alternatively be a pair of pinch rollers of another drafting device or of another upstream aggregate.
  • Denoted at 7 is a nip line at which the staple fiber strand 2 supplied in the delivery direction A is kept clamped before entering the air jet unit 3.
  • the air jet unit 3 generates for the yarn to be spun 4 its rotation and delivers the yarn 4 in the yarn withdrawal direction B by means of a pair of draw-off rollers, not shown.
  • the air jet unit 3 contains inter alia a nozzle body 8 with a fiber conveying channel 9 and a swirl chamber 10.
  • a fluid device generates in the swirl chamber 10 by blowing compressed air through tangentially into the swirl chamber 10 opening compressed air channels 11 a vortex flow.
  • the emerging from the mouths of the compressed air channels 11 compressed air is discharged through an exhaust duct 12, wherein this has an annular cross-section about a spindle-shaped stationary member 13 around, which in turn encloses a yarn withdrawal channel 14.
  • a fiber discharge edge 16 of a fiber guiding surface 17 is arranged as a swirl barrier, which is arranged eccentrically to the yarn withdrawal channel 14 in the region of its inlet opening 18.
  • the fibers to be spun are held, on the one hand, in the staple fiber structure 2 and thus guided by the outlet opening 15 of the fiber conveying channel 9 substantially without rotation into the yarn withdrawal channel 14.
  • the fibers are exposed to the effect of the turbulent flow, by which they or at least their end regions are driven radially away from the inlet opening 18 of the thread withdrawal channel 14.
  • the filaments 4 produced by the described method therefore exhibit a core of substantially longitudinally extending filaments or fiber regions without substantial rotation and an outer region in which the filaments or fiber regions are rotated about 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 in the fiber conveying channel 9, essentially pass directly into the yarn withdrawal channel 14, but that trailing fiber regions, in particular if they are in the entrance area the Faserzu semiconductorkanals 9 are no longer held, pulled by the 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 thread withdrawal channel 14, as well as the turbulent flow exposed, centrifugally, so from the inlet opening 18 of the thread withdrawal channel 14 away, accelerated and withdrawn into the exhaust duct 12 ,
  • the fiber areas drawn from the staple fiber strand 2 by the swirling flow form a fiber vortex opening into the inlet opening 18 of the thread withdrawal channel 14, the longer portions of which spiral around the spindle-shaped component 13 and are pulled in this spiral against the force of the flow in the exhaust channel 12 against the inlet opening 18 of the thread withdrawal channel 14.
  • FIGS. 1 to 3 and 5 illustrated embodiment there are per air nozzle unit 3 a total of four compressed air channels 11, which are each incorporated into the nozzle body 8.
  • a nozzle body 8 radially surrounding annular space 19 is connected in a manner not shown to a compressed air source.
  • the compressed air then passes from the annular space 19 to the individual compressed air channels 11.
  • the annular space 19 is sealed by a wall 21 of a housing.
  • the fiber conveying channel 9 includes an inlet opening 22, which according to FIG. 5 parallel to the nip line 7 of the delivery roller pair 5.6 has a greater width than transversely thereto. This initially takes into account the fact that the staple fiber strand 2 entering the air jet unit 3 has its greater width along the nip line 7. In the fiber conveying channel 9, the staple fiber strand 2 is guided along a fiber guiding surface 17, which has a deflection edge 23 on its way.
  • the fiber guiding surface 17 can already have at least approximately its smallest width at an inlet edge 26 upstream of the deflecting edge 23.
  • This smallest width should expediently be such that it corresponds to only two times to three times the diameter of the inlet opening 18 of the yarn withdrawal channel 14.

Landscapes

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

Claims (4)

  1. Dispositif de fabrication d'un fil filé (4) à partir d'un assemblage de fibres discontinues (2) amené à une unité de buses d'air (3) par une paire de cylindres délivreurs (5, 6), avec un canal de transport de fibres (9) situé en aval de la paire de cylindres délivreurs et qui présente un orifice d'entrée et un orifice de sortie, et comprend une surface de guidage de fibres pourvue d'une arête de déviation et, pour le reste, s'étend de façon essentiellement plane et essentiellement parallèle à la ligne de pinçage de la paire de cylindres délivreurs, aboutit dans une chambre tourbillonnaire (10) située en aval de l'orifice de sortie au niveau d'un orifice d'entrée d'un canal de retrait de fil avec une arête de distribution de fibres servant un arrêt de torsion, caractérisé en ce que la surface de guidage de fibres (17) se rétrécit de plus en plus en raison des parois de délimitation latérales (24, 25) du canal de transport de fibres (9) et présente au plus tard sa largeur minimale au niveau de l'arête de déviation (23).
  2. Dispositif selon la revendication 1, caractérisé en ce que la surface de guidage de fibres (17) présente déjà du moins approximativement sa largeur minimale au niveau d'une arête d'entrée (26) située en amont de l'arête de déviation (23).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la largeur minimale de la surface de guidage de fibres (17) est au maximum égale au triple du diamètre de l'orifice d'entrée (18) du canal de retrait de fil (14).
  4. Dispositif selon la revendication 3, caractérisé en ce que la largeur minimale de la surface de guidage de fibres (17) est au maximum égale au double du diamètre de l'orifice d'entrée (18) du canal de retrait de fil (14).
EP03788962A 2003-01-31 2003-10-24 Dispositif de fabrication d'un fil file Expired - Lifetime EP1587974B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2003104823 DE10304823A1 (de) 2003-01-31 2003-01-31 Vorrichtung zum Herstellen eines gesponnenen Fadens
DE10304823 2003-01-31
PCT/EP2003/011768 WO2004067820A1 (fr) 2003-01-31 2003-10-24 Dispositif de fabrication d'un fil file

Publications (2)

Publication Number Publication Date
EP1587974A1 EP1587974A1 (fr) 2005-10-26
EP1587974B1 true EP1587974B1 (fr) 2009-03-04

Family

ID=32695205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03788962A Expired - Lifetime EP1587974B1 (fr) 2003-01-31 2003-10-24 Dispositif de fabrication d'un fil file

Country Status (5)

Country Link
EP (1) EP1587974B1 (fr)
JP (1) JP4263177B2 (fr)
AU (1) AU2003293622A1 (fr)
DE (2) DE10304823A1 (fr)
WO (1) WO2004067820A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103924333B (zh) * 2014-04-17 2016-02-03 江阴市华方新技术科研有限公司 一种纱线导引装置
ITUA20163006A1 (it) * 2016-04-29 2017-10-29 Savio Macch Tessili Spa Dispositivo di filatura di tipo air-jet
EP3859061A1 (fr) * 2020-01-30 2021-08-04 Saurer Intelligent Technology AG Dispositif de réception d'une mèche de fibres

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51130334A (en) * 1975-05-06 1976-11-12 Murata Machinery Ltd Apparatus for making spun yarns
US4986066A (en) * 1988-12-19 1991-01-22 Burlington Industries, Inc. Vacuum spinning nozzle assembly
JP2708000B2 (ja) * 1995-02-10 1998-02-04 村田機械株式会社 紡績装置
EP0990719B1 (fr) * 1998-10-02 2003-05-28 W. SCHLAFHORST AG & CO. Métier à filer
US6679044B2 (en) * 2000-12-22 2004-01-20 Maschinenfabrik Rieter Ag Pneumatic spinning apparatus

Also Published As

Publication number Publication date
EP1587974A1 (fr) 2005-10-26
JP2006514166A (ja) 2006-04-27
WO2004067820A1 (fr) 2004-08-12
AU2003293622A1 (en) 2004-08-23
DE50311255D1 (de) 2009-04-16
JP4263177B2 (ja) 2009-05-13
DE10304823A1 (de) 2004-08-12

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