EP1563130B1 - Dispositif de filage a buse d'air - Google Patents

Dispositif de filage a buse d'air Download PDF

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Publication number
EP1563130B1
EP1563130B1 EP03750686A EP03750686A EP1563130B1 EP 1563130 B1 EP1563130 B1 EP 1563130B1 EP 03750686 A EP03750686 A EP 03750686A EP 03750686 A EP03750686 A EP 03750686A EP 1563130 B1 EP1563130 B1 EP 1563130B1
Authority
EP
European Patent Office
Prior art keywords
compressed air
nozzle
air
arrangement according
staple fibre
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
EP03750686A
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German (de)
English (en)
Other versions
EP1563130A1 (fr
Inventor
Peter Schweier
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 EP1563130A1 publication Critical patent/EP1563130A1/fr
Application granted granted Critical
Publication of EP1563130B1 publication Critical patent/EP1563130B1/fr
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
    • D01H4/02—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

Definitions

  • the invention relates to an air jet spinning device for producing a spun yarn from a staple fiber strand which passes through a swirl chamber into which at least one compressed air channel having a nozzle-like orifice is formed, which is arranged as a nozzle slot arranged in a nozzle body, in a radial direction to the direction of the staple fiber strand radial plane, which is completed by an end face of a cover to the compressed air channel.
  • An air jet spinning device of this type is characterized by the DE 37 32 708 A1 State of the art.
  • two variants are disclosed with regard to the position of compressed air channels.
  • one variant which is assumed in the preamble of the present patent application, there are a plurality of compressed air channels in a direction radial to the direction of the staple fiber strand.
  • the compressed air impinging on the staple fiber composite must then be deflected abruptly, it being more or less left to chance, whether the air flow in or against the direction of travel.
  • the compressed air channels in the direction of the staple fiber strand are inclined by the fact that the nozzle slots are located in conical surfaces and are covered by associated conical surfaces.
  • there is a risk of lack of sealing since the associated conical surfaces are never free of tolerances.
  • the compressed air channels are drilled in non-generic air jet spinning devices.
  • the aforementioned air jet spinning device has the advantage of a very simple production, since in a nozzle body in a very simple manner with very high accuracy nozzle slots generated by milling can be subsequently covered by a contact surface and thereby completed to compressed air channels. Since such compressed air channels are exposed before assembly, they can be checked in a simple manner with respect to their accuracy and optionally reworked. During this check also faulty cuts can be sorted out.
  • the production of such nozzle slots is not limited to the milling, but can for example also be done by a stamping process.
  • the invention is based on the object for an air jet spinning device to produce the required air pressure channels in principle as in the aforementioned prior art, but at the same time to ensure that with good sealing at the same time a flow component is directed in the running direction of the fiber structure.
  • the object is achieved in that the cover in direct connection to the mouth has an inclined in the running direction of the staple fiber strand inclined Heilumlenkuring.
  • nozzle slots which extend in a radial plane to the direction of the staple fiber strand
  • the end face of the cover and its associated surface of the nozzle body may each be a flat surface, so that there are no sealing problems.
  • compressed air ducts designed according to the invention can be used advantageously in air jet spinning devices which, for example, correspond to the EP 12 17 109 A2 are designed.
  • the air deflection surface is advantageously designed as a conical annular surface surrounding the staple fiber structure. In this way, the Heilumlenk the same particularly easy to produce. It is advantageous if a plurality of orifices is directed tangentially against the annular surface. This not only leads to a good rotation distribution for the spun yarn, but also has the advantage of an extended deflection path for the compressed air, since it is initially directed to the air-deflecting surface with a component in the circumferential direction of the annular surface.
  • the ring itself can be very flat and narrow. So it has been shown that it is sufficient if the taper of the annular surface relative to the radial plane between 10 ° and 20 °. It has also been found that the length of the Lucasumlenk Chemistry can be in the order of the width of the nozzle slots.
  • the FIG. 1 shows an air jet spinning device with which a supplied through a feed channel 1 loose staple fiber strand 2 in a swirl chamber 3 is given a rotation, so that a spun yarn 4 is formed, which is withdrawn through a yarn withdrawal channel 5.
  • the staple fiber strand 2 may come from a drafting or other drafting unit.
  • a fluid device generates in the vortex chamber 3 by blowing compressed air through tangentially into the vortex chamber 3 opening compressed air channels 6 a vortex flow.
  • the emerging from the mouths 7 of the compressed air channels 6 compressed air is discharged through an exhaust duct 8, wherein this has a arranged around the yarn withdrawal channel 5 annular cross-section about a spindle-shaped stationary member 9 around.
  • an edge 11 of a fiber guide surface 12 is arranged as a swirl barrier, which is arranged eccentrically to the yarn withdrawal channel 5 in the region of its inlet opening 13.
  • the fibers to be spun are held, on the one hand, in the staple fiber structure 2 and thus guided by the outlet opening 10 of the feed channel 1 into the yarn withdrawal channel 5 substantially without any rotation.
  • 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 13 of the yarn withdrawal channel 5.
  • the threads 4 produced by the described method also show a core of fibers or fiber regions 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 is achieved by leading ends of fibers, in particular those whose trailing regions are still held upstream in the feed channel 1, substantially directly into the yarn withdrawal channel 5, but that trailing fiber regions, in particular if they no longer be held in the input area of the feed channel 1, 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 5, as well as the vortex flow, centrifugal, so from the inlet opening 13 of the thread withdrawal channel 5 away, accelerated and withdrawn into the exhaust duct 8 ,
  • the drawn by the vortex 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 whose longer portions spiral around the outside of the spindle-shaped member 9 and in this spiral against the force of flow in the exhaust duct 8 against the inlet port 13th the thread withdrawal channel 5 are pulled.
  • FIG. 1 addition of the FIGS. 2, 3 and 4
  • the compressed air channels 6 will be described in more detail below.
  • compressed air channels 6 there are four compressed air channels 6 per air jet spinning device, which are each provided with orifices 7 and, as best of all FIG. 2 seen, are directed tangentially into the vortex chamber 3.
  • These compressed air channels 6 are in accordance FIGS. 1 and 2 as nozzle slots 15 incorporated into a nozzle body 14 and according to FIGS. 1 . 3 and 4 completed by an end face 16 of a cover 17 to the compressed air channels 6.
  • the nozzle slots 15 extend in a direction of travel A of the staple fiber strand 2 radial plane E, see FIG. 1 ,
  • a radially surrounding the nozzle body 14 annulus 18 is connected in a manner not shown to a compressed air source. About incorporated into the outer contour axial recesses 19 of the nozzle body 14, the compressed air then passes from the annular space 18 to the individual compressed air channels 6. To the outside, the annular space 18 is sealed by a wall of a housing 20.
  • the cover 17, in direct connection with the orifices 7, has an inclined air deflection surface 21 inclined in the running direction A of the staple fiber structure 2.
  • the nozzle slots 15 can be made very simply by lying in the radial plane E, the compressed air emerging from the orifices 7 is redirected by the air deflection surface 21 in the direction A of the fiber structure 2.
  • the Luftumlenk nature 21 is designed as a conical annular surface 22 which surrounds the staple fiber strand 2 and is directed against a plurality of mouths 7 tangentially.
  • the conicity ⁇ of the annular surface 22 relative to the radial plane E is relatively low and is in the range between 10 ° and 20 °.
  • the length L of Lucasumlenk Chemistry 21 is in the order of the width B of the nozzle slots 15th

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

Claims (5)

  1. Dispositif de filage à buses à air destiné à la fabrication d'un fil continu (4) à partir d'un assemblage de fibres discontinues (2) qui traverse une chambre de turbulence (3), dans laquelle aboutit au moins un canal d'air comprimé (6) présentant une ouverture (7) en forme de buse, ce canal d'air comprimé étant exécuté comme une fente de buse (15) disposée dans un corps de buse et située dans un plan radial par rapport au sens de déplacement de l'assemblage de fibres discontinues, cette fente de buse étant complétée par une surface frontale d'un recouvrement (17) pour le canal d'air comprimé, caractérisé en ce que le recouvrement (17) présente une surface de renvoi d'air (21) inclinée en biais dans le sens de déplacement (A) de l'assemblage de fibres discontinues (2), en raccordement direct à l'ouverture (7).
  2. Dispositif de filage à buses à air selon la revendication 1, caractérisé en ce que la surface de renvoi d'air (21) est exécutée comme une surface annulaire (22) conique entourant l'assemblage de fibres discontinues (2).
  3. Dispositif de filage à buses à air selon la revendication 2, caractérisé en ce qu'une pluralité d'ouvertures (7) est dirigée tangentiellement contre la surface annulaire (22).
  4. Dispositif de filage à buses à air selon la revendication 2 ou 3, caractérisé en ce que la conicité (α) de la surface annulaire (22) est de 10° à 20° par rapport au plan radial (E).
  5. Dispositif de filage à buses à air selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la longueur (L) de la surface de renvoi d'air (21) est située dans l'ordre de grandeur de la largeur (B) des fentes de buse (15).
EP03750686A 2002-11-22 2003-10-04 Dispositif de filage a buse d'air Expired - Lifetime EP1563130B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10256344 2002-11-22
DE2002156344 DE10256344A1 (de) 2002-11-22 2002-11-22 Luftdüsenspinnvorrichtung
PCT/EP2003/010994 WO2004048655A1 (fr) 2002-11-22 2003-10-04 Dispositif de filage a buse d'air

Publications (2)

Publication Number Publication Date
EP1563130A1 EP1563130A1 (fr) 2005-08-17
EP1563130B1 true EP1563130B1 (fr) 2008-07-16

Family

ID=32240560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750686A Expired - Lifetime EP1563130B1 (fr) 2002-11-22 2003-10-04 Dispositif de filage a buse d'air

Country Status (6)

Country Link
EP (1) EP1563130B1 (fr)
JP (1) JP2006507418A (fr)
CN (1) CN1714180A (fr)
AU (1) AU2003268916A1 (fr)
DE (2) DE10256344A1 (fr)
WO (1) WO2004048655A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012127009A (ja) * 2010-12-13 2012-07-05 Murata Mach Ltd 空気紡績装置及び空気紡績装置を備えた紡績機械
US9719884B2 (en) * 2012-12-20 2017-08-01 Robert Bosch Gmbh Intake gas sensor for internal combustion engine
CH712409A1 (de) * 2016-04-29 2017-10-31 Rieter Ag Maschf Luftspinnmaschine sowie Verfahren zur Herstellung eines Garns.
DE102019111035A1 (de) * 2019-04-29 2020-10-29 Saurer Intelligent Technology AG Spinnstelle, Luftspinnmaschine und Verfahren zum Herstellen eines Garns

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3732708A1 (de) * 1987-01-15 1988-07-28 Stahlecker Fritz Luftduese fuer pneumatisches falschdrallspinnen mit einem aus wenigstens zwei teilstuecken gebildeten fadenkanal
JP2708000B2 (ja) * 1995-02-10 1998-02-04 村田機械株式会社 紡績装置
JP2002155435A (ja) * 2000-11-15 2002-05-31 Murata Mach Ltd 紡績機におけるピーシング方法及びその装置
EP1217109A3 (fr) * 2000-12-22 2003-04-02 Maschinenfabrik Rieter Ag Dispositif de filage

Also Published As

Publication number Publication date
WO2004048655A1 (fr) 2004-06-10
AU2003268916A1 (en) 2004-06-18
CN1714180A (zh) 2005-12-28
DE50310171D1 (de) 2008-08-28
DE10256344A1 (de) 2004-06-03
JP2006507418A (ja) 2006-03-02
EP1563130A1 (fr) 2005-08-17

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