EP1845180B1 - Composant en forme de broche pour dispositif de filage à jet d'air doté d'un canal d'injection - Google Patents

Composant en forme de broche pour dispositif de filage à jet d'air doté d'un canal d'injection Download PDF

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Publication number
EP1845180B1
EP1845180B1 EP07003847A EP07003847A EP1845180B1 EP 1845180 B1 EP1845180 B1 EP 1845180B1 EP 07003847 A EP07003847 A EP 07003847A EP 07003847 A EP07003847 A EP 07003847A EP 1845180 B1 EP1845180 B1 EP 1845180B1
Authority
EP
European Patent Office
Prior art keywords
tip
spindle
injection channel
shaped component
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.)
Not-in-force
Application number
EP07003847A
Other languages
German (de)
English (en)
Other versions
EP1845180A3 (fr
EP1845180A2 (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 EP1845180A2 publication Critical patent/EP1845180A2/fr
Publication of EP1845180A3 publication Critical patent/EP1845180A3/fr
Application granted granted Critical
Publication of EP1845180B1 publication Critical patent/EP1845180B1/fr
Not-in-force 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
    • 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
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/002—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for false-twisting spinning machines

Definitions

  • the invention relates to a spindle-shaped component for an air jet spinning device having a base body and an attached tip and extending through the base body and tip Garnabzugskanal having an inlet disposed in the tip inlet, wherein the spindle-shaped member has at least one opening into the Garnabzugskanal injection channel in Direction of the inlet opening of the Garnabzugskanals is directed.
  • the invention further relates to a tip and a base body for such a spindle-shaped component.
  • a spindle-shaped component of this type is characterized by the DE 10 2004 044 345 A1 State of the art.
  • a fiber ribbon of staple fibers is fed to an air jet spinning device and there gives the spin rotation.
  • the fiber ribbon is first passed through a Faserzu Glasskanal the air jet spinning device in a vortex chamber, which is associated with a fluid means for generating a vortex flow around an inlet opening of a Garnabzugskanals around.
  • an injection channel is arranged in the spindle-shaped component, which opens into the Garnabzugskanal and directed against the inlet opening of Garnabzugskanals.
  • This injection channel is acted upon in a piecing process with compressed air, so that arises in the air jet spinning device running counter to the spinning direction air flow.
  • the yarn end passed through the air jet spinning device can then be deflected in a manner known per se and prepared accordingly, so that it can be connected to a newly supplied fiber ribbon. After attaching the fiber ribbon to this yarn end of the spinning process is restored.
  • the known spindle-shaped component has the disadvantage that the opening into the Garnabzugskanal injection channel is formed by a very thin bore.
  • the bore for the injection channel is arranged in a patch on a base body of the spindle-shaped component tip.
  • the bore of the injection channel is drilled at an acute angle to the Garnabzugskanal and usually has a diameter of a few tenths of a millimeter.
  • the preparation of this injection channel is very complex, especially since often the tip of the spindle-shaped component consists of a hard and wear-resistant material.
  • the invention is based on the object to simplify the manufacturability of a spindle-shaped component of the type mentioned.
  • the at least one injection channel is formed by a surface region of the base body and by a surface region of the tip.
  • an injection channel is seen in its cross section not only surrounded by one of the components body or tip, but of both simultaneously.
  • a part of the peripheral wall of the injection channel is formed by the main body and another part of the peripheral wall of the injection channel through the tip.
  • an injection channel is formed by a cone-shaped surface area of the base body and / or by a cone-shaped surface area of the tip.
  • a cone-shaped surface area can be particularly well-established that the opening into the Garnabzugskanal injection channel is directed towards the inlet opening of the Garnabzugskanals, and that the required during piecing, directed against the spin direction air flow in the air jet spinning device, especially in Garnabzugskanal, reliably formed when the injection channel is pressurized with compressed air.
  • a cone-shaped surface area of the body or tip is achieved that the injection channel extends at an acute angle to the Garnabzugskanal, at least in a region shortly before the injection channel opens into the Garnabzugskanal.
  • the injection channel is formed on the finished spindle-shaped component by a cone-shaped surface portion of the tip, which has a defined distance from a cone-shaped surface portion of the base body.
  • a groove-shaped surface area in the respective other component is assigned to a cone-shaped surface area in the tip or base body.
  • air jet spinning device 1 is used to produce a spun yarn 2 from a fiber ribbon 3 of staple fibers.
  • the air jet spinning device 1 is preceded by a drafting unit 4 that produces the thin fiber ribbon 3 from a staple fiber strand 5 and delivers it to the air jet spinning device 1.
  • the staple fiber strand 5 to be spun is fed in drafting device 4 in the direction of delay A and warped in a known manner to a desired fineness.
  • the drafting unit 4 only partially shown is preferably a four-cylinder drafting system and thus contains a total of four pairs of rollers, each having a driven lower roller and a trained as a pressure roller upper roller. Shown is only the delay zone of the drafting 4 limiting delivery roller pair 6, 7. Following the drafting 4 then there is a thin fiber ribbon 3, which is stretched and still untwisted.
  • the air jet spinning device 1 is fed to the fiber ribbon 3 via a fiber feed channel 8. It follows a so-called vortex chamber 9, in which the fiber ribbon 3, the spinning rotation is given, so that the spun yarn 2 is formed, which is deducted by a Garnabzugskanal 10 in withdrawal direction B and fed to a winding device, not shown.
  • the Garnabzugskanal 10 is arranged in a spindle-shaped, stationary during operation component 11, which consists of a base body 12 and a tip 13. Der GrundMech 12 und die Spitze 13 Sind in den Figuren skilled.
  • the Garnabzugskanal 10 has an arranged in the tip 13 inlet opening 14 for the resulting yarn 2.
  • a fluid device generates during the spinning process in the vortex chamber 9 by blowing compressed air through tangentially into the vortex chamber 9 opening compressed air nozzles 15 a Vortex flow.
  • the emerging from the compressed air nozzles 15 compressed air is discharged through an exhaust duct 16, which has an annular cross-section around the spindle-shaped member 11 around which contains the Garnabzugskanal 10.
  • the exhaust duct 16 is for this purpose connected in a manner not shown with a vacuum source.
  • an edge of a fiber guide surface 17 is arranged as a swirl barrier, which is arranged slightly eccentrically to the yarn withdrawal channel 10 in the region of its inlet opening 14.
  • the fibers to be spun are held on the one hand in the fiber ribbon 3 and thus guided by the Faserzu Foodkanal 8 substantially without rotation in the Garnabzugskanal 10, on the other hand, the fibers in the area between the Faserzu Georgiakanal 8 and the Garnabzugskanal 10 are exposed to the effect of vortex flow. By this, the fibers or at least their end portions are driven away radially from the inlet opening 14 of the Garnabzugskanals 10.
  • the yarns 2 made with the described air jet spinning apparatus 1 therefore exhibit a core of substantially longitudinally extending fibers or fiber portions without substantial rotation and an outer portion in which the fibers or fiber portions are rotated about the core.
  • An air jet spinning device 1 of this type allows very high spinning speeds, which are on the order of between 300 and 600 m per minute.
  • the compressed air emerging from the compressed air nozzles 15 in the vortex chamber 9 compressed air is supplied to the air jet spinning device 1 during operation via a compressed air channel 18 and the annular chamber 19 surrounding the vortex chamber 9. If, for some reason, the fiber ribbon 3 or the yarn 2 breaks, this compressed air nozzles 15 supplying compressed air is first turned off. At the same time, the drives of the drafting system 4 and the Garnabzugswalzen not shown, and the winding device can be switched off.
  • the spindle-shaped component 11 may for this purpose contain a piston-like component 20, so that the movement away of the spindle-shaped component 11 can be carried out with very simple means.
  • An annular channel 21 is arranged around the spindle-shaped component 11, which can be acted upon with compressed air.
  • the compressed air in the annular channel 21 presses the piston-like component 20 fixedly attached to the main body 12 of the spindle-shaped component 11 against the force of a spring 22 in the view of FIG FIG. 1 up.
  • the tip 13 of the spindle-shaped component 11 with the inlet opening 14 of the Garnabzugskanals 10 is thereby moved away from the fiber feed channel 8 and the fiber guide surface 17, so that more space is created in the vortex chamber 9.
  • possibly present in the vortex chamber fiber residues can be sucked through the exhaust duct 16.
  • the spring 22 pushes the spindle-shaped member 11 back into its operating position.
  • the injection channel 23 is acted upon during the piecing process with compressed air and generates an air flow in Garnabzugskanal 10 and in the fiber feed channel 8, which runs counter to the spinning direction to the drafting unit 4 out. It is important that the injection channel 23 is at an acute angle to the Garnabzugskanal 10 before it opens into this, so that the injection effect in Garnabzugskanal 10 is sufficiently large to ensure a safe suction of the traversed end of the yarn 2. It may be advantageous to pressurize the injection channel 23 with compressed air even during the described cleaning process in order to facilitate the cleaning of the vortex chamber 9.
  • the injection channel 23 is formed by a surface region 24 of the main body 12 and by a surface region 25 of the tip 13.
  • the spindle-shaped component 11 is composed of the components base body 12 and tip 13. This is advantageous since the tip 13 is subject to high wear, in particular in the region of the inlet opening 14 of the yarn withdrawal channel 10, and is therefore expediently made of a wear-resistant material.
  • the attachment of the tip 13 may, for example via a press fit or via a thread on the receiving part 26.
  • a sealing ring 27 may be provided, which may for example consist of copper.
  • the inventive design of the injection channel 23 ensures particularly easy manufacturability of the spindle-shaped component 11, since the surface region 24 is machined during the production of the base body 12, while the surface region 25 is processed during the production of the tip 13.
  • the surface regions 24 and 25 of the injection channel 23 are thus processed separately from one another prior to assembly of the spindle-shaped component 11 and yield the injection channel 23 only when the tip 13 and main body 12 are joined together.
  • the injection channel 23 with its small cross-section is therefore not produced as a whole, but arises only when the surface areas 24 and 25 are assigned to each other during assembly of the spindle-shaped member 11.
  • a part of its peripheral wall is formed by the surface region 24 of the base body 12 and another part of its peripheral wall by the surface region 25 of the tip 13.
  • the surface region 24 of the main body 12 is designed in the shape of a cone shell, so that the injection channel 23 extends at an acute angle to the yarn withdrawal channel 10 and is directed in the direction of the inlet opening 14.
  • the surface region 25 may be groove-shaped in the tip 13.
  • the groove-shaped surface area 25 is associated with the cone-shaped surface area 24, whereby the injection channel 23 is formed.
  • the surface region 25 may also have a cone-shaped shape and surround the cone-shaped surface region 24 at a small distance. This is indicated by the reference numeral 25 'by dashed lines.
  • a groove 28 extending parallel to the yarn withdrawal channel 10 is provided in the tip 13 in the region of the receiving part 26, which groove is connected to an annular channel 29 and an intermediate channel 30.
  • the intermediate channel 30 is in turn connected to a base body 12 of the spindle-shaped member 11 surrounding annular channel 31 in connection, which can be supplied via a supply line 32 with the necessary compressed air.
  • a groove-shaped surface region 25 at the tip 13 it may be advantageous to arrange a plurality of groove-shaped surface regions 25 and correspondingly, of course, grooves 28 around the yarn withdrawal channel 10.
  • four groove-shaped surface regions 25 may be uniformly arranged around the yarn withdrawal channel 10.
  • the groove-shaped surface regions 25 on the tip 13 and the groove 28 can be produced particularly advantageously without cutting on the tip 13. This is possible for example by an embossing process or a direct production of the tip 13 in a mold.
  • the preparation of the tip 13 is characterized in contrast to the above-mentioned prior art very easily possible.
  • FIG. 2 another embodiment of the spindle-shaped member 11 and the injection channel 23 is shown.
  • the same components have the same reference numerals as in FIG. 1 on. To avoid repetition, reference is therefore made to the description there.
  • a groove 33 is provided in the base body 12 in the region of the receiving part 26 in order to supply the injection channel 23 with compressed air from the annular channel 29.
  • the injection channel 23 is formed by a cone-shaped surface region 35 of the tip 13 and by a groove-shaped surface region 34 of the base body 12.
  • the attachment of the groove 33 and the groove-shaped surface region 34 in the base body 12 may be advantageous if the tip 13 consists of a material which is difficult to form, for example ceramic.
  • the groove-shaped surface region 34 is assigned to the base body 12 during assembly of the tip 13 to the cone-shaped surface area 35, so that the injection channel 23 is formed.
  • the surface region 34 of the base body 12 is also formed cone-shaped, and is arranged at a small distance from the cone-shaped surface portion 35. This in turn results in an annular injection channel 23 which is indicated by the reference numeral 34 'by dashed lines.
  • the groove 33 or the groove-shaped surface region 34 on the base body 12 can advantageously be produced by milling. As in FIG. 1 Of course, here too, a plurality of grooves 33 or groove-shaped surface regions 34 can be arranged around the yarn withdrawal channel 10.

Landscapes

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

Claims (7)

  1. Composant en forme de broche (11) pour dispositif de filage à jet d'air (1) avec un corps de base (12) et une pointe rapportée (13) ainsi qu'un canal de tirage du fil (10) traversant le corps de base (12) et la pointe (13) et présentant un orifice d'entrée (14) situé dans la pointe (13), sachant que le composant en forme de broche (11) présente au moins un canal d'injection (23) débouchant dans le canal de tirage du fil (10) et orienté vers l'orifice d'entrée (14) du canal de tirage du fil (10), caractérisé en ce qu'entre le corps de base (12) et la pointe (13), l'au moins un canal d'injection (23) est formé par une zone superficielle (24 ; 34) du corps de base (12) et par une zone superficielle (25 ; 35) de la pointe (13).
  2. Composant en forme de broche selon la revendication 1, caractérisé en ce qu'un canal d'injection (23) est formé par une zone superficielle conoïde (24 ; 34') du corps de base (12).
  3. Composant en forme de broche selon la revendication 1 ou 2, caractérisé en ce qu'un canal d'injection (23) est formé par une zone superficielle conoïde (25', 35) de la pointe (13).
  4. Composant en forme de broche selon l'une des revendications 1 à 3, caractérisé en ce qu'un canal d'injection (23) est formé par une zone superficielle en forme de gorge (25) de la pointe (13).
  5. Composant en forme de broche selon l'une des revendications 1 à 4, caractérisé en ce qu'un canal d'injection (23) est formé par une zone superficielle en forme de gorge (34) du corps de base (12).
  6. Pointe (13) pour un composant en forme de broche (11) d'un dispositif de filage à jet d'air (1) avec un canal de tirage du fil (10) présentant un orifice d'entrée (14), caractérisée en ce que la pointe (13) présente une zone superficielle (25 ; 35) qui, avec une zone superficielle (24 ; 34) d'un corps de base (12) pour un composant en forme de broche (11), forme au moins un canal d'injection (23) orienté sur l'orifice d'entrée (14) lors de l'assemblage.
  7. Corps de base (12) pour un composant en forme de broche (11) selon la revendication 1 ou 2, caractérisé en ce que le corps de base (12) présente une zone superficielle (24 ; 34) qui, avec une zone superficielle (25 ; 35) d'une pointe (13) pour un composant en forme de broche (11), forme au moins un canal d'injection (23) lors de l'assemblage.
EP07003847A 2006-04-13 2007-02-26 Composant en forme de broche pour dispositif de filage à jet d'air doté d'un canal d'injection Not-in-force EP1845180B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006018249A DE102006018249A1 (de) 2006-04-13 2006-04-13 Spindelförmiges Bauteil für eine Luftdüsenspinnvorrichtung mit einem Injektionskanal

Publications (3)

Publication Number Publication Date
EP1845180A2 EP1845180A2 (fr) 2007-10-17
EP1845180A3 EP1845180A3 (fr) 2008-05-28
EP1845180B1 true EP1845180B1 (fr) 2009-05-27

Family

ID=38222651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07003847A Not-in-force EP1845180B1 (fr) 2006-04-13 2007-02-26 Composant en forme de broche pour dispositif de filage à jet d'air doté d'un canal d'injection

Country Status (6)

Country Link
US (1) US20070227116A1 (fr)
EP (1) EP1845180B1 (fr)
JP (1) JP2007284861A (fr)
CN (1) CN101054744B (fr)
AT (1) ATE432381T1 (fr)
DE (2) DE102006018249A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349651A1 (de) * 2003-10-20 2005-05-19 Wilhelm Stahlecker Gmbh Luftdüsen-Spinnvorrichtung
DE102004044345A1 (de) * 2004-09-09 2006-03-16 Wilhelm Stahlecker Gmbh Luftdüsenspinnvorrichtung
DE102005045703A1 (de) * 2005-09-19 2007-03-22 Wilhelm Stahlecker Gmbh Luftdüsenaggregat für eine Luftdüsenspinnvorrichtung
DE102008050874A1 (de) * 2008-09-29 2010-04-01 Wilhelm Stahlecker Gmbh Luftdüsenspinnaggregat mit spindelförmigem Bauteil
DE102009034206A1 (de) * 2009-07-17 2011-01-27 Maschinenfabrik Rieter Ag Bauteil für eine Luftdüsenspinnvorrichtung
DE102011053837A1 (de) * 2011-09-21 2013-03-21 Maschinenfabrik Rieter Ag Spinnspitze für eine Hohlspindel einer Luftspinnmaschine
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
JP6031847B2 (ja) * 2012-06-22 2016-11-24 村田機械株式会社 中空ガイド軸体、空気紡績装置、及びこれを備える糸巻取機
ITUA20163011A1 (it) * 2016-04-29 2017-10-29 Savio Macch Tessili Spa Dispositivo di filatura di tipo air-jet

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6183324A (ja) * 1984-09-26 1986-04-26 Toray Eng Co Ltd 繊維分離管
DE3734566C2 (de) * 1987-10-13 1994-10-06 Rieter Ingolstadt Spinnerei Drallorgan für das Verspinnen von Fasern zu einem Faden
US5159806A (en) * 1989-11-14 1992-11-03 Murata Kikai Kabushiki Kaisha Apparatus for producing spun yarns
US5146740A (en) * 1990-02-20 1992-09-15 Murata Kikai Kabushiki Kaisha Spinning apparatus
JP2930010B2 (ja) * 1996-05-16 1999-08-03 村田機械株式会社 紡績機のピーシング方法及びその装置
JP3064951B2 (ja) * 1997-04-24 2000-07-12 村田機械株式会社 糸通し装置
EP1217109A3 (fr) * 2000-12-22 2003-04-02 Maschinenfabrik Rieter Ag Dispositif de filage
DE10261011A1 (de) * 2002-12-17 2004-07-08 Wilhelm Stahlecker Gmbh Vorrichtung zum Herstellen eines gesponnenen Fadens
DE10333411A1 (de) * 2003-07-15 2005-02-03 Wilhelm Stahlecker Gmbh Vorrichtung zum Herstellen eines gesponnenen Fadens aus einem Stapelfaserverband
DE10349651A1 (de) * 2003-10-20 2005-05-19 Wilhelm Stahlecker Gmbh Luftdüsen-Spinnvorrichtung
EP1778901B1 (fr) * 2004-08-20 2011-07-06 Maschinenfabrik Rieter Ag Broche a canal d'injection et procede de rattachement pour une machine a filer a jet d'air
DE102004044345A1 (de) * 2004-09-09 2006-03-16 Wilhelm Stahlecker Gmbh Luftdüsenspinnvorrichtung

Also Published As

Publication number Publication date
EP1845180A3 (fr) 2008-05-28
JP2007284861A (ja) 2007-11-01
DE102006018249A1 (de) 2007-10-18
CN101054744A (zh) 2007-10-17
CN101054744B (zh) 2011-11-23
ATE432381T1 (de) 2009-06-15
DE502007000760D1 (de) 2009-07-09
EP1845180A2 (fr) 2007-10-17
US20070227116A1 (en) 2007-10-04

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