EP2400049B2 - Buse de dévidage de fil - Google Patents

Buse de dévidage de fil Download PDF

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Publication number
EP2400049B2
EP2400049B2 EP11166461.1A EP11166461A EP2400049B2 EP 2400049 B2 EP2400049 B2 EP 2400049B2 EP 11166461 A EP11166461 A EP 11166461A EP 2400049 B2 EP2400049 B2 EP 2400049B2
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EP
European Patent Office
Prior art keywords
nozzle
draw
yarn
previous
thread
Prior art date
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Active
Application number
EP11166461.1A
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German (de)
English (en)
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EP2400049A2 (fr
EP2400049A3 (fr
EP2400049B1 (fr
Inventor
Josef Schermer
Edmund Schuller
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.)
Rieter Ingolstadt GmbH
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Rieter Ingolstadt GmbH
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Publication date
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Application filed by Rieter Ingolstadt GmbH filed Critical Rieter Ingolstadt GmbH
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Publication of EP2400049A3 publication Critical patent/EP2400049A3/fr
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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
    • D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes

Definitions

  • the present invention relates to a yarn take-off nozzle for an open-end spinning apparatus having a take-off nozzle hopper for diverting a produced yarn during yarn take-off, which includes a yarn deflection zone.
  • Thread withdrawal nozzles for open-end spinning machines are known in the prior art in many versions.
  • the yarn withdrawal nozzles are in this case mounted in a yarn withdrawal channel of the open-end spinning device and serve to guide and deflect the yarn produced in the spinning rotor during yarn withdrawal. Due to the constant contact of the drawn through the thread take-off yarn it comes into operation, especially at high rotor speeds and thus high take-off speeds, to a considerable heat development at the thread take-off. If this heat is not sufficiently dissipated, the high temperatures can lead to damage to the yarn and yarn breaks. Likewise, this can lead to contamination of the trigger nozzles. On the other hand, it is necessary by the continuous threadline on the trigger nozzle to perform the exhaust nozzles of a wear-resistant material.
  • Thread withdrawal nozzles are known in which the withdrawal nozzle funnel is made in one piece from a metallic material. Although a very good heat dissipation from the surface of the trigger nozzle funnel is achieved, it is necessary to provide these materials with a wear protection coating. However, such coatings can be applied only on a smooth surface and in easily accessible areas in a uniform and sufficient layer thickness. By contrast, in the area of macrostructures, such as notches or spirals, as well as the nozzle bore, the coatings are formed only insufficiently, so that considerable wear can occur there. It can also Irregularities in the coated surface can damage the yarn.
  • the JP S54 4407 B also shows a two-part vent nozzle.
  • the withdrawal nozzle funnel is formed in two parts, wherein a first part of the Garnumlenkzone is disposed on an outer part, while a second part of the Garnumlenkzone is disposed on an inner, usable in the outer part part.
  • the DE 10 2005 045 817 A1 also shows a yarn withdrawal nozzle with a wear-resistant ceramic nozzle funnel.
  • the document proposes to mold the nozzle funnel with the nozzle body in a direct heat-conducting contact, for example, pour. Nevertheless, even here at the surface of the nozzle funnel, which is in contact with the withdrawn yarn, very high surface temperatures still occur, so that frequently the rotor speeds are limited by the thermal load on the draw-off nozzle.
  • the object of the present invention is therefore to propose a yarn draw-off nozzle which further improves the heat dissipation from the yarn-contacting surface of the nozzle funnel.
  • a yarn withdrawal nozzle for an open-end spinning device has a draw-off funnel for deflecting a produced yarn during the yarn take-off, which contains a yarn deflection zone.
  • the draw-off funnel is formed in two parts, with an outer part, which contains a first area of the yarn deflection zone, and with an inner part, which contains a second area of the yarn deflection zone.
  • the two parts are made of different materials.
  • the two parts can be provided with different coatings at least in the areas of the yarn deflection zone or, according to another advantageous embodiment, only one of the two parts can be provided with a coating, while the other part is uncoated.
  • a transition point between the outer part and the inner part outside the Garnumlenkzone against the Faserleitization is set back so that any existing burrs, protrusions or notches do not come into contact with the yarn and this can not damage.
  • the invention has recognized that, in particular in the outer region of the nozzle funnel due to the large circumferential speed of the drawn yarn, a high frictional energy and thus very high surface temperatures and local overheating comes.
  • the invention therefore provides to produce the outer part of the discharge nozzle funnel from a material, preferably a metal, with a high thermal conductivity, since in this area the requirements for the thermal conductivity are increased.
  • suitable wear protection coatings can still provide adequate protection of the outer part of the trigger nozzle funnel.
  • the inner part which is exposed to lower thermal loads due to the smaller yarn peripheral speed, is made of a ceramic material. Since only the inner part of the exhaust nozzle funnel is made of the ceramic material, good heat dissipation to the exhaust nozzle or the environment can be achieved despite the comparatively poor thermal conductivity of the ceramic material. At the same time, the design of the inner part of the nozzle funnel made of a ceramic material offers the possibility of attaching structures such as notches or spirals.
  • the yarn draw-off nozzle furthermore comprises a nozzle holder and / or a discharge nozzle shaft for fastening the draw-off nozzle in the spinning device.
  • the draw-off nozzle is provided as a shaftless nozzle
  • the nozzle holder is fastened to the spinning device by means of one or more fastening means, for example magnets.
  • the outer part of the discharge nozzle funnel and the nozzle holder and / or the discharge nozzle shaft are integrally formed with one another and form a nozzle main body.
  • the heat dissipation from the haul-off funnel is thereby further improved, since no gaps or insulating layers are to be overcome between the outer part of the haul-off nozzle and the discharge nozzle shaft.
  • the production is simplified thereby.
  • a further advantageous embodiment of the invention provides that the inner part is designed as a ceramic insert, which is insertable into the outer part and / or in the nozzle holder and / or in the discharge nozzle shaft.
  • the assembly of the individual parts of the exhaust nozzle and the attachment of the inner part is thus possible in a favorable manner.
  • the outer part of the discharge nozzle funnel and / or the discharge nozzle shaft according to the invention consists of a material with a thermal conductivity of at least 100 W / mK.
  • aluminum or copper or their alloys are suitable because they are processed in a favorable manner.
  • this is coated at least in a Garnumlenkzone with a wear protection layer. It is particularly advantageous if the wear protection layer has a high thermal conductivity. As a result, heat dissipation from the surface of the trigger nozzle funnel can be ensured despite the improved wear protection. In order to further improve the heat dissipation, the wear protection layer is preferably made as thin as possible.
  • the take-off nozzle funnel and the take-off nozzle shaft are integrally formed with each other, then it is advantageous if the nozzle body is coated with a wear-resistant layer having a high thermal conductivity. As a result, not only the particularly loaded Garnumlenkzone the outer part of the Abzugsdüsig-richters, but also all surfaces of the Abzugsdüse, which can come into contact with the yarn can be protected from wear.
  • the wear protection layer is a hard material or diamond coating.
  • the hard material or diamond coating can be applied here in a PVD or a CVD process or else galvanically.
  • a diamond coating is, for example, a galvanically applied nickel-phosphorus diamond coating in question.
  • DLC coatings DLC - diamond-like-carbon are possible, which can be applied in a PVD or a CVD process. This has a high thermal conductivity and can be applied very thinly in a favorable manner. Nevertheless, it has the required hardness and wear resistance.
  • the ceramic insert has radially arranged notches or spirals in order to influence the guidance of the thread and the unwinding of the thread. Due to the two-part design of the trigger nozzle funnel, it is optimally possible with improved heat dissipation to attach the desired macrostructures on the surface of the nozzle funnel and design wear-resistant. In the case of a one-piece, metallic nozzle funnel, on the other hand, in the area of such macrostructures, it is scarcely possible to achieve sufficient protection against wear since coatings can not be uniformly applied to a surface having such structures. On the other hand, a one-piece ceramic nozzle funnel has the required wear resistance in the area of such surface structures, but only offers insufficient heat dissipation.
  • a wear protection bush made of steel or ceramic is subsequently arranged in the yarn draw-off nozzle on the draw-off nozzle funnel.
  • the heat generation is comparatively low, so that it can also be produced from a comparatively poorly heat-conductive ceramic material.
  • the wear protection bushing can also be performed in a favorable manner as a hardened steel part or with a wear-resistant coating steel part.
  • the ceramic insert is formed integrally with the wear protection bushing.
  • the preparation of the draw-off nozzle is thereby simplified, since only one part is to be handled.
  • the production of the extraction nozzle and the heat dissipation is improved, since there is an improved heat-conducting contact.
  • the ceramic insert is glued or pressed. Since a particularly good heat dissipation from the thermally loaded Garnumlenkzone in the outer part of the nozzle funnel is due to the two-part design, no adverse insulating effects are achieved by sticking the ceramic insert. The preparation of the yarn draw-off nozzle is thereby simplified.
  • Fig. 1 shows a vent nozzle 1 according to the invention, which is fixed in a known manner in a cover 2 of a rotor housing, not shown here.
  • the draw-off nozzle 1 serves to deflect and guide the yarn 5 produced in the spinning rotor 4, which in the present case is indicated merely by a dot-dash line.
  • the spinning rotor 4 in this case runs at speeds of up to 150,000 revolutions per minute, wherein the produced yarn 5 is withdrawn at take-off speeds of for example 250 m / min. Due to the rotation of the rotor 4, the yarn 5 runs on the surface of the take-off nozzle 1 in a crank-like manner.
  • the draw-off nozzle 1 consists of a draw-off funnel 6, on which the yarn 5 is deflected, and of a draw-off nozzle shaft 7, by means of which the draw-off nozzle 1 is fastened in the cover 2 of the spinning device. Due to the constant contact with the crank-like circumferential and withdrawn at high speed yarn 5 it comes to the surface 8 of the trigger nozzle 6 to a considerable heat generation by frictional heat. In addition, the area of the Trigger nozzle funnel 6 is subjected to heavy wear by the constant yarn movement.
  • the exhaust nozzle funnels 6 were made of a ceramic material having a very high wear resistance.
  • the disadvantage here however, that such ceramic materials have a comparatively poor thermal conductivity of less than 30 W / mK, so that it came with the enormous heat development by the withdrawn and rotating thread to an insufficient heat dissipation.
  • the open-end spinning machines must therefore be operated at reduced speed in the prior art in order to avoid such overheating, although purely technically higher rotor speeds and take-off speeds would be possible.
  • the invention has now recognized that, in particular in the outer region of the nozzle funnel 6 with a larger diameter, a very high temperature development occurs due to the higher peripheral speed of the yarn, which can only be insufficiently discharged on account of the ceramic materials used. Due to the particularly smooth surface in the area of the yarn deflection zone 3 (see Fig. 2 and 4 ) and the continuous contact of the yarn 5 in this area, the temperature development is further enhanced.
  • the invention therefore proposes to design the trigger nozzle funnel 6 in two parts, each of the parts containing a region 3a, 3b of the yarn deflection zone 3.
  • the outer part 6a of the discharge nozzle funnel 6 is made of a preferably metallic material with the highest possible thermal conductivity.
  • the inner part 6b consists of a material with a high wear resistance, in particular a ceramic material, and is embodied here as a ceramic insert 9.
  • the extraction nozzle 1 is particularly resistant to wear and yet to influence the movement of the sweeping yarn 5 by various structures such as notches 10 or spirals.
  • transition point 14 between the outer part 6a and the inner part 6b slightly recessed from the surface 8 of the trigger nozzle funnel 6 and thus arranged outside the Garnumlenkzone 3. Damage to the overlying yarn 5 by protruding burrs or other irregularities of the surface 8 in this area can thus be prevented.
  • the outer part 6a of the exhaust nozzle funnel 6 and the exhaust nozzle shaft 7 are integrally formed with each other from a thermally conductive material.
  • the heat conduction is thereby improved, since no more gaps or insulating adhesive layers have to be overcome.
  • the production of such a one-piece nozzle body can also be carried out economically.
  • this is at least in the area of the yarn deflection zone, which in Fig. 2 is indicated by a dotted line, provided with a wear protection layer.
  • a wear protection layer For this are hard or diamond coatings in question, which have a good thermal conductivity and are relatively thin applicable. The heat conduction is thus not affected by the application of a wear protection layer.
  • the ceramic insert 9 is extended so that it contains a part of the nozzle bore 11.
  • the ceramic insert 9 at the same time includes a wear protection bushing 12, which adjoins the vent nozzle funnel 6 in the interior of the draw-off nozzle 1.
  • the manufacture and assembly of such a thread take-off nozzle 1 is thereby particularly simple and economical. Due to the very good heat dissipation from the most heavily used thread contact zone, the ceramic insert 9 can be glued or pressed in a simple manner in the Abzugsdüsengrund emotions.
  • the thread take-off nozzle 1 of Fig. 2 and 4 has a separate wear protection sleeve 12.
  • This can be designed as a ceramic insert or as a steel insert and also be glued or pressed into the nozzle body. Also in this embodiment, the benefits of improved heat dissipation from the most stressed yarn diverting zone to various structures 10 for influencing yarn twist and yarn movement as well as good wear protection can be optimally combined.
  • FIG. 3 shows a discharge nozzle 1 according to the invention in an embodiment as a shaftless nozzle.
  • the withdrawal nozzle 1 is in this case only by means of a socket 13, which, as shown in the present case, can also be made in one piece with the outer part 6a of the trigger nozzle funnel, on the cover. 2 attached to the rotor housing.
  • a wear protection bushing 12 can also be used directly in the cover 2 here.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (14)

  1. Buse de dévidage de fil (1) pour un métier à tisser à bout libéré avec une trémie de buse de dévidage (6) pour dévier un fil (5) produit durant le dévidage du fil, qui contient une zone de déflexion de fil (3), sachant que la trémie (6) de buse de dévidage se présente sous une forme à deux parties, avec une partie extérieure (6a), qui contient une première partie (3a) de la zone de déflexion de fil (3), et avec une partie intérieure (6b), qui contient une seconde partie (3b) de la zone de déflexion de fil (3), caractérisée en ce que les deux parties (6a, 6b) se composent de matériaux différents, que la partie extérieure (6a) se compose d'un matériau, de préférence d'un métal, présentant une conductivité thermique élevée d'au moins 100 W/mK et que la partie intérieure (6b) se compose d'un matériau céramique.
  2. Buse de dévidage de fil selon la revendication précédente, caractérisée en ce que les deux parties (6a, 6b) sont dotés de revêtements différents au moins dans les zones (3a, 3b) de la zone de déflexion de fil (3) et/ou une seule des parties (6a, 6b) présente un revêtement.
  3. Buse de dévidage de fil selon l'une des revendications précédentes, caractérisée en ce que la buse (1) de dévidage de fil comporte en outre une douille (13) de tuyère et/ou une tige (7) de buse de dévidage pour la fixation de la buse de dévidage (1) dans le dispositif de filage.
  4. Buse de dévidage de fil selon l'une des revendications précédentes, caractérisée en ce que la partie extérieure (6a) de la trémie (6) de buse de dévidage et la douille (13) de tuyère et/ou la tige (7) de buse de dévidage sont formés en une pièce les uns avec les autres et forment un corps de base de tuyère.
  5. Buse de dévidage de fil selon l'une des revendications précédentes, caractérisée en ce que la partie intérieure (6b) est réalisé sous la forme d'un insert en céramique (9), lequel peut être mis en place dans la partie extérieure (6a) et/ou dans la douille (13) de tuyère et/ou dans la tige (7) de buse de dévidage.
  6. Buse de dévidage de fil selon l'une des revendications précédentes, caractérisée en ce que la partie extérieure (6a) et/ou la tige (7) de buse de dévidage se compose(nt) d'aluminium ou de cuivre.
  7. Buse de dévidage de fil selon l'une des revendications précédentes, caractérisée en ce que la partie extérieure (6a) est revêtue d'une couche de protection contre l'usure au moins dans la zone (3) de déflexion de fil, de préférence d'une couche de protection contre l'usure présentant une conductivité thermique élevée.
  8. Buse de dévidage de fil selon l'une des revendications précédentes, caractérisée en ce que le corps de base de la buse est revêtu d'une couche de protection contre l'usure au moins dans la zone d'un alésage (11) de la buse, de préférence d'une couche de protection contre l'usure présentant une conductivité thermique élevée.
  9. Buse de dévidage de fil selon l'une des revendications précédentes, caractérisée en ce que la couche de protection contre l'usure est un revêtement en matériau dur ou en diamant.
  10. Buse de dévidage de fil selon la revendication 5, caractérisée en ce que la surface de l'insert (9) en céramique présente des macrostructures, en particulier des encoches (10) disposées radialement.
  11. Buse de dévidage de fil selon l'une des revendications précédentes, caractérisée en ce qu'un manchon (12) de protection contre l'usure en acier ou en céramique est disposée dans la buse (1) de dévidage de fil après la trémie (6) de buse de dévidage.
  12. Buse de dévidage de fil selon la revendication 5 ou 10, caractérisée en ce que l'insert (9) en céramique est formé en une pièce avec le manchon (12) de protection contre l'usure.
  13. Buse de dévidage de fil selon l'une des revendications 5, 10 ou 12, caractérisée en ce que l'insert (9) en céramique est encollé ou emmanché à force.
  14. Buse de dévidage de fil selon l'une des revendications précédentes, caractérisée en ce qu'un point de transition (14) est situé entre la partie extérieure (6a) et la partie intérieure (6b), hors de la zone (3) de déflexion de fil.
EP11166461.1A 2010-06-25 2011-05-18 Buse de dévidage de fil Active EP2400049B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010030536 2010-06-25
DE102011002972A DE102011002972A1 (de) 2010-06-25 2011-01-21 Fadenabzugsdüse

Publications (4)

Publication Number Publication Date
EP2400049A2 EP2400049A2 (fr) 2011-12-28
EP2400049A3 EP2400049A3 (fr) 2015-01-21
EP2400049B1 EP2400049B1 (fr) 2016-03-30
EP2400049B2 true EP2400049B2 (fr) 2018-12-12

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ID=44801247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11166461.1A Active EP2400049B2 (fr) 2010-06-25 2011-05-18 Buse de dévidage de fil

Country Status (4)

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US (1) US8347597B2 (fr)
EP (1) EP2400049B2 (fr)
CN (1) CN102296395B (fr)
DE (1) DE102011002972A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CZ2012591A3 (cs) * 2012-08-30 2014-03-12 Rieter Cz S.R.O. Spřádací ústrojí rotorového dopřádacího stroje
CN103046213B (zh) * 2012-12-18 2014-05-14 苏州展华纺织有限公司 一种经线转向预定位装置
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
DE102015119114A1 (de) * 2015-11-06 2017-05-11 Maschinenfabrik Rieter Ag Fadenabzugsdüse
CN114703569B (zh) * 2022-04-24 2022-12-23 南通佳利园纺织品有限公司 用于气流纺纱装置的抽纱嘴
DE102022114064A1 (de) * 2022-06-03 2023-12-14 Saurer Spinning Solutions Gmbh & Co. Kg Fadenabzugsdüse sowie Offenend-Spinnvorrichtung mit einer Fadenabzugsdüse

Citations (1)

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Publication number Priority date Publication date Assignee Title
WO1994004730A1 (fr) † 1992-08-20 1994-03-03 Burckhardt America Inc. Dispositif de filature a fibre liberee

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JPS544407B1 (fr) * 1969-07-21 1979-03-06
CS165068B1 (fr) 1972-10-16 1975-11-28
PL115004B1 (en) 1978-04-24 1981-03-31 Os Bad Rozwojowy Maszyn Zgrzeb Hitch down funnel of a twisting unit in a spindleless spinning machine
DE3016675C2 (de) * 1980-04-30 1986-06-12 W. Schlafhorst & Co, 4050 Mönchengladbach Offenend-Spinnvorrichtung
DE3934166C2 (de) 1989-10-12 1994-06-09 Rieter Ingolstadt Spinnerei Offenend-Spinnvorrichtung
US5265406A (en) 1990-03-09 1993-11-30 Schubert & Salzer Maschinenfabrik Ag Open-end spinning device
DE4007517A1 (de) 1990-03-09 1991-09-12 Schubert & Salzer Maschinen Offenendspinnvorrichtung
DE19502917C2 (de) * 1995-01-31 2002-01-24 Fritz Stahlecker Fadenabzugsdüse für OE-Spinnvorrichtungen
DE10222635A1 (de) 2002-05-17 2003-12-18 Ilias Efthimiou Fadenabzugsdüse
DE10244497A1 (de) 2002-09-25 2004-04-08 Saurer Gmbh & Co. Kg Offenend-Spinnvorrichtung
DE10254271A1 (de) * 2002-11-21 2004-06-03 Saurer Gmbh & Co. Kg Offenend-Spinnvorrichtung
AT501063A2 (de) * 2004-11-17 2006-06-15 Rieter Ingolstadt Spinnerei Fadenabzugsdüse für spinnmaschinen
DE102005045817A1 (de) 2004-11-17 2006-05-18 Rieter Ingolstadt Spinnereimaschinenbau Ag Fadenabzugsdüse für Spinnmaschinen
DE102008019214B4 (de) 2008-04-17 2018-06-07 Saurer Germany Gmbh & Co. Kg Fadenabzugsdüse

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Publication number Priority date Publication date Assignee Title
WO1994004730A1 (fr) † 1992-08-20 1994-03-03 Burckhardt America Inc. Dispositif de filature a fibre liberee

Also Published As

Publication number Publication date
DE102011002972A1 (de) 2011-12-29
CN102296395B (zh) 2016-05-25
EP2400049A2 (fr) 2011-12-28
CN102296395A (zh) 2011-12-28
US8347597B2 (en) 2013-01-08
US20110315265A1 (en) 2011-12-29
EP2400049A3 (fr) 2015-01-21
EP2400049B1 (fr) 2016-03-30

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