EP1563130A1 - Dispositif de filage a buse d'air - Google Patents

Dispositif de filage a buse d'air

Info

Publication number
EP1563130A1
EP1563130A1 EP03750686A EP03750686A EP1563130A1 EP 1563130 A1 EP1563130 A1 EP 1563130A1 EP 03750686 A EP03750686 A EP 03750686A EP 03750686 A EP03750686 A EP 03750686A EP 1563130 A1 EP1563130 A1 EP 1563130A1
Authority
EP
European Patent Office
Prior art keywords
air
nozzle
staple fiber
spinning device
compressed 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.)
Granted
Application number
EP03750686A
Other languages
German (de)
English (en)
Other versions
EP1563130B1 (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
Expired - Lifetime legal-status Critical Current

Links

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 nozzle spinning device for producing a spun thread from a staple fiber structure, which passes through a swirl chamber into which at least one compressed air channel with a nozzle-like opening opens, which is designed as a nozzle slot arranged in a nozzle body and lying in a plane radial to the direction of travel of the staple fiber structure. which is completed by an end face of a cover to the compressed air channel.
  • An air nozzle spinning device of this type is known from DE 37 32 708 A1.
  • two variants are disclosed with regard to the location of compressed air channels.
  • several compressed air channels lie in a plane that is radial to the running direction of the staple fiber structure.
  • the compressed air impinging on the stack bevel / belt must then be deflected abruptly, it being more or less left to chance whether the air flow is in the opposite direction or the direction of travel.
  • the compressed air channels are inclined in the running direction of the staple fiber structure in that the nozzle slots are located in conical surfaces and are covered by assigned conical surfaces. There is a risk of insufficient sealing here, since the conical surfaces assigned to one another are never free from tolerances.
  • the compressed air channels are usually drilled in air jet spinning devices of a non-generic type.
  • the air nozzle spinning device mentioned at the outset has the advantage of very simple manufacture, since nozzle slots are produced in a nozzle body in a very simple manner with very high accuracy by milling can be covered, which are then covered by a contact surface and thereby completed to compressed air channels. Since such compressed air ducts are exposed before assembly, their accuracy can be checked in a simple manner and, if necessary, reworked. Faulty sections can also be sorted out during this check.
  • the production of such nozzle slots is not limited to milling, but can also be done, for example, by an embossing process.
  • the invention is based on the object of producing the required air pressure channels for an air nozzle spinning device in principle as in the prior art mentioned above, but at the same time ensuring that at the same time a flow component is directed in the running direction of the fiber structure with a good seal.
  • the cover has an inclined air deflecting surface which is inclined in the running direction of the staple fiber association in the direct connection to the mouth.
  • the end face of the cover and the surface of the nozzle body assigned to it can each be a flat surface, so that there are no sealing problems.
  • care is taken to ensure that the compressed air is deflected in the running direction of the staple fiber structure after the mouth of the at least one compressed air channel, so that clear flow conditions prevail.
  • the compressed air channels designed according to the invention can advantageously be used in air jet spinning devices which are designed, for example, in accordance with EP 12 17 109 A2.
  • the air deflecting surface is advantageously designed as a conical ring surface surrounding the staple fiber structure. In this way, the air deflection surface can be produced particularly easily. It is advantageous if a plurality of orifices are directed tangentially against the ring surface. This not only leads to good rotation for the spun thread, but also has the advantage of an extended deflection path for the compressed air, since this is initially directed at the air deflection surface with a component in the circumferential direction of the ring surface.
  • the ring surface itself can be very flat and narrow. It has been shown that it is sufficient if the conicity of the ring surface with respect to the radial plane is between 10 ° and 20 °. It has also been shown that the length of the air deflecting surface can be of the order of the width of the nozzle slots.
  • FIG. 1 shows an axial section through an air nozzle spinning device according to the invention in approximately ten times magnification
  • FIG. 2 shows a section along section II-II of FIG. 1 through a nozzle body in a representation that is reduced compared to FIG. 1 but nevertheless enlarged compared to the original size
  • FIG. 4 shows a section through this cover along the sectional area IV-IV of FIG. 3.
  • FIG. 1 shows an air nozzle spinning device with which a loose staple fiber dressing 2 fed through a feed duct 1 is given a rotation in a swirl chamber 3, so that a spun thread 4 is produced, which is drawn off through a thread take-off duct 5.
  • the staple fiber dressing 2 can come from a drafting device or another drafting unit.
  • a fluid device generates a swirl flow in the swirl chamber 3 by blowing compressed air through tangential compressed air channels 6 opening into the swirl chamber 3.
  • the compressed air emerging from the mouths 7 of the compressed air channels 6 is discharged through an exhaust air channel 8, which has an annular cross section arranged around the thread take-off channel 5 around a spindle-shaped stationary component 9.
  • an edge 11 of a fiber guide surface 12 is arranged as a twist lock, which is arranged eccentrically to the thread take-off 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 from the outlet opening 10 of the feed channel 1 into the thread take-off channel 5 essentially without giving rotation.
  • the fibers in the area between the feed channel 1 and the thread take-off channel 5 are exposed to the effect of the vortex flow, through which they or at least their end areas are driven radially away from the inlet opening 13 of the thread take-off channel 5.
  • the threads 4 produced with the described method also show a core of fibers or fiber areas running essentially in the longitudinal direction of the thread substantial rotation and an outer region in which the fibers or fiber regions are rotated around the core.
  • this thread structure comes about because leading ends of fibers, in particular those whose trailing areas are still kept upstream in the feed channel 1, essentially reach the thread draw-off channel 5 directly, but trailing fiber areas, especially if they can no longer be held in the entrance area of the feed channel 1, pulled out of the staple fiber structure 2 by the formation of eddies and then rotated around the thread 4 that is formed.
  • fibers are integrated at the same time both in the thread 4 being formed, as a result of which they are drawn through the thread take-off channel 5, and also exposed to the vortex flow, which accelerates them centrifugally, i.e. away from the inlet opening 13 of the thread take-off channel 5, and draws them into the exhaust air channel 8 ,
  • the fiber regions drawn from the staple fiber structure 2 by the vortex flow form a fiber vortex opening into the inlet opening 13 of the thread take-off channel 5, the longer portions of which spiral around the outside of the spindle-shaped component 9 and in this spiral against the force of the flow in the exhaust air channel 8 against the inlet opening 13 of the thread take-off channel 5 are pulled.
  • the compressed air channels 6 are described in more detail below with the addition of FIGS. 2, 3 and 4 to FIG.
  • compressed air channels 6 there are a total of four compressed air channels 6 per air nozzle spinning device, each of which is provided with openings 7 and, as can best be seen from FIG. 2, is directed tangentially into the swirl chamber 3.
  • These compressed air channels 6 are in accordance with FIGS. 1 and 2 as nozzle slots 15 worked into a nozzle body 14 and completed according to FIGS. 1, 3 and 4 by an end face 16 of a cover 17 to the compressed air channels 6.
  • the nozzle slots 15 run in a plane E radial to the running direction A of the staple fiber structure 2, see FIG. 1 for this.
  • An annular space 18 radially surrounding the nozzle body 14 is connected to a compressed air source in a manner not shown.
  • the compressed air then passes from the annular space 18 to the individual compressed air channels 6 via axial recesses 19 of the nozzle body 14 machined into the outer contour.
  • the annular space 18 is sealed to the outside by a wall of a housing 20.
  • the cover 17 has an inclined air deflecting surface 21, which is inclined in the running direction A of the staple fiber structure 2, in direct connection to the orifices 7.
  • the nozzle slots 15 can be manufactured very simply because they lie in the radial plane E, the compressed air emerging from the orifices 7 is redirected through the air deflecting surface 21 in the running direction A of the fiber structure 2.
  • the air deflecting surface 21 is designed as a conical ring surface 22 which surrounds the staple fiber structure 2 and against which a plurality of orifices 7 are directed tangentially.
  • the taper ⁇ of the annular surface 22 with respect to the radial plane E is relatively low and is in the range between 10 ° and 20 °.
  • the length L of the air deflection surface 21 is in the order of the width B of the nozzle slots 15.

Landscapes

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

Abstract

L'invention concerne un dispositif de filage à buse d'air permettant de produire un fil filé (4), qui comprend une chambre de turbulence (3) que parcourt un système de fibres discontinues (2). Au moins un canal d'air comprimé (6) débouche dans ladite chambre de turbulence. Ledit canal se présente sous forme de fente de buse (15), aménagée dans un corps de buse et située dans un plan radial par rapport au sens de la marche du système de fibres discontinues. La fente de buse (15) est complétée par une face d'un élément de recouvrement (17) jusqu'au canal d'air comprimé (6). L'élément de recouvrement présente, à la jonction immédiate avec l'embouchure (7), une surface de déflexion de l'air (21) inclinée en biais, dans le sens de la marche du système de fibres discontinues, ladite surface de déflexion de l'air se présentant de préférence sous forme de surface annulaire conique.
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
DE2002156344 DE10256344A1 (de) 2002-11-22 2002-11-22 Luftdüsenspinnvorrichtung
DE10256344 2002-11-22
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 true EP1563130A1 (fr) 2005-08-17
EP1563130B1 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004048655A1 *

Also Published As

Publication number Publication date
AU2003268916A1 (en) 2004-06-18
DE50310171D1 (de) 2008-08-28
EP1563130B1 (fr) 2008-07-16
WO2004048655A1 (fr) 2004-06-10
CN1714180A (zh) 2005-12-28
JP2006507418A (ja) 2006-03-02
DE10256344A1 (de) 2004-06-03

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