EP0445554A2 - Tuyère de sortie de fil pour un métier à filer à bout libre - Google Patents

Tuyère de sortie de fil pour un métier à filer à bout libre Download PDF

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Publication number
EP0445554A2
EP0445554A2 EP91102072A EP91102072A EP0445554A2 EP 0445554 A2 EP0445554 A2 EP 0445554A2 EP 91102072 A EP91102072 A EP 91102072A EP 91102072 A EP91102072 A EP 91102072A EP 0445554 A2 EP0445554 A2 EP 0445554A2
Authority
EP
European Patent Office
Prior art keywords
thread
nozzle
open
end spinning
base body
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
EP91102072A
Other languages
German (de)
English (en)
Other versions
EP0445554A3 (en
EP0445554B1 (fr
Inventor
Eberhard Hofmann
Johann Pohn
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 Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
Schubert und Salzer Maschinenfabrik 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 Rieter Ingolstadt Spinnereimaschinenbau AG, Schubert und Salzer Maschinenfabrik AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0445554A2 publication Critical patent/EP0445554A2/fr
Publication of EP0445554A3 publication Critical patent/EP0445554A3/de
Application granted granted Critical
Publication of EP0445554B1 publication Critical patent/EP0445554B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 invention relates to an open-end spinning device with a thread draw-off nozzle.
  • the thread-guiding parts were therefore made of wear-resistant material in such a way that a ceramic insert was inserted into the thread take-off nozzle, which was otherwise made of hardenable or hardened steel. This made it possible to considerably improve the service life of the nozzles and thus the operability of these thread take-off nozzles.
  • difficulties with spinning, in particular an increased number of thread breaks, could not be eliminated.
  • the invention is based on the knowledge that in the area of the thread draw-off nozzle, in particular due to the wear-resistant design thereof, heat build-up occurs, which has a disadvantageous effect on the entire spinning process and the yarn formation.
  • the object of the invention is therefore to avoid these disadvantages.
  • the problem is solved by the features of claim 1. What is new and innovative is the knowledge that a heat problem arises at the thread draw-off nozzle, which affects the thread and thus the spinning capacity.
  • the heat-dissipating design of the thread draw-off nozzle prevents the thread draw-off nozzle from heating up and it to the above-mentioned disturbances in the spinning process.
  • Attaching thread-guiding surfaces made of wear-resistant materials to the base body is an advantageous, long-lasting and wear-resistant design. It is particularly advantageous if the base body consists of the materials with high thermal conductivity, such as aluminum or zinc. Of course, other materials and alloys with high thermal conductivity are also suitable. These materials are also particularly suitable, economical, and can be manufactured at very low costs.
  • a thread take-off nozzle which is designed, for example, in such a way that, starting from the spinning element, it tapers and an insert made of hard steel is provided in the - essentially cylindrical - tapered part of the thread take-off nozzle pointing away from the spinning chamber, which combines the advantages of wear resistance with the advantages of thermal conductivity.
  • the thread running through the thread take-off nozzle touches the cylindrical one Part of the surface with a known lower contact pressure than the funnel-shaped. It may therefore be sufficient here for the thread draw-off nozzle material to have a lower wear resistance than ceramic.
  • the open-end spinning device shown in FIG. 1 consists of a rotor 5, into which a mushroom-shaped elevation of the rotor cover 3, which carries the thread take-off nozzle 1, projects approximately centrally.
  • the rotor 5 is surrounded by a rotor housing, not shown, which is usually sealed off by a cover - here the rotor cover 3 - and is under negative pressure during the spinning process.
  • the fibers entering the rotor 3 through the fiber feed channel (not shown) are influenced by their kinetic energy and of the forces prevailing in the rotor are conveyed into the rotor groove 52, spun there into a thread 9 and drawn off from the rotor 5 via the surface 21 of the thread take-off nozzle 1 and conveyed through the thread take-off channel 4 to a storage device (not shown).
  • the thread take-off nozzle 1 is fastened with its base body 11 by conventional means, not shown, in that part of the thread take-off channel 4 which faces away from the rotor 5 and which is located in the rotor cover 3. If there is sufficient contact between the base body 11 and the cover 3, the thread take-off nozzle can also be provided with a thread and screwed into the cover 3.
  • the surface 111 of the thread take-off nozzle 1 pointing towards the inside of the thread take-off channel 4 tapers out in the direction of thread pulling out, but can also be designed essentially cylindrical.
  • the surface 111 can optionally be provided with a wear-resistant coating.
  • the funnel-shaped mouthpiece 12 of the thread draw-off nozzle 1 is placed and points in the direction of the rotor 5.
  • B. made of ceramic material and polished on the surface 21 of its mouth.
  • the thread 9 is withdrawn from the rotor 5 and partially guided over the surfaces 21 and 111, the resulting friction between the thread 9 and the surfaces touched by the thread 9 results in a very high heating of the surfaces, which would worsen the spinning process in a short time, if the temperature would not be kept below favorable values for spinning conditions due to the heat dissipation possible due to the high thermal conductivity of the base body 11.
  • the base body 11 of the thread draw-off nozzle 1 which is produced by casting or die casting or by machining, consists of a material, which has a high thermal conductivity lambda, values of lambda> 80 W / mk being preferred.
  • a material which has a high thermal conductivity lambda, values of lambda> 80 W / mk being preferred.
  • lower values of lambda depending on the rotor speed and the respective properties of the material to be spun, may also be sufficient for the necessary heat dissipation. All materials and elements, as well as their alloys, which have a high lambda value, are suitable for this, although some can be used particularly economically. Die-cast aluminum and zinc have proven themselves extremely well for this application, because here high thermal conductivity and economical producibility are combined in the die-casting process.
  • elevations are provided in the surface of the thread take-off nozzle which is in contact with the thread. These elevations "pluck” the yarn and cause hairiness by partially loosening fibers from the fiber edge layer.
  • FIG. 2 shows elevations designed as webs 7 in plan view. But they can also be provided as spherical or pin-shaped elevations in the thread course. Depending on the character of the thread, different geometric shapes are suitable. The number of surveys can also vary.
  • Fig. 1 is an insert in the thread run or thread take-off channel 4 8, the surface 81 of which can optionally be subjected to wear protection measures.
  • This insert 8 is expediently made of steel. In this respect, this is more appropriate than other solutions such.
  • B. ceramics since steel is more economical to produce and allows a wide range of surface treatments, each of which can be tailored to the characteristics of the material to be spun. For example, case hardening is an inexpensive, simple and effective wear protection measure.
  • notches 6 recesses expediently raise the u. a. due to the rotation of the rotor 5 during spinning so-called false twist in the spun thread 9 partly due to the fact that they trigger a brief lifting of the thread from the surface of the mouth funnel 12 and give the yarn the possibility of losing internal tension.
  • the present invention enables the use of more economical and long-lasting thread draw-off nozzles 1 in open-end spinning devices than before.
  • the assignment of tasks to materials that are especially suitable for the respective requirements, such as wear resistance, corrosion resistance and thermal conductivity, and their interaction makes it stable and constant Spinning possible.
  • the invention is not limited to the exemplary embodiments shown here, but can be embodied in further expedient configurations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP91102072A 1990-03-09 1991-02-14 Tuyère de sortie de fil pour un métier à filer à bout libre Expired - Lifetime EP0445554B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4007517 1990-03-09
DE4007517A DE4007517A1 (de) 1990-03-09 1990-03-09 Offenendspinnvorrichtung

Publications (3)

Publication Number Publication Date
EP0445554A2 true EP0445554A2 (fr) 1991-09-11
EP0445554A3 EP0445554A3 (en) 1991-11-13
EP0445554B1 EP0445554B1 (fr) 1996-09-25

Family

ID=6401813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91102072A Expired - Lifetime EP0445554B1 (fr) 1990-03-09 1991-02-14 Tuyère de sortie de fil pour un métier à filer à bout libre

Country Status (2)

Country Link
EP (1) EP0445554B1 (fr)
DE (2) DE4007517A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321943A (en) * 1991-06-12 1994-06-21 Spindelfabrik Suessen, Schurr, Stahlecker & Grill Gmbh Yarn withdrawal nozzle for open-end spinning arrangements
CZ297892B6 (cs) * 1997-09-03 2007-04-25 W. Schlafhorst Ag & Co. Vývodka príze
CN112011858A (zh) * 2019-05-29 2020-12-01 里特机械公司 用于空气纺纱机的纺纱喷嘴的捻线元件以及纺纱喷嘴

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4411972A1 (de) * 1994-04-07 1995-10-12 Schlafhorst & Co W Kühlvorrichtung an einer Offenend-Spinnvorrichtung
DE19901147B4 (de) * 1999-01-14 2010-04-08 Maschinenfabrik Rieter Ag Garnabzugsdüse für eine Offenend-Rotorspinnvorrichtung
DE10224205A1 (de) 2002-05-31 2003-12-11 Schlafhorst & Co W Kanalplattenadapter für eine Offenend-Spinnvorrichtung
AT501063A2 (de) * 2004-11-17 2006-06-15 Rieter Ingolstadt Spinnerei Fadenabzugsdüse für spinnmaschinen
DE102011002972A1 (de) 2010-06-25 2011-12-29 Rieter Ingolstadt Gmbh Fadenabzugsdüse
CZ2012591A3 (cs) * 2012-08-30 2014-03-12 Rieter Cz S.R.O. Spřádací ústrojí rotorového dopřádacího stroje

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544721A1 (de) * 1975-10-07 1977-04-14 Feldmuehle Anlagen Prod Vorrichtung zum verspinnen
DE3016675A1 (de) * 1980-04-30 1981-11-05 W. Schlafhorst & Co, 4050 Mönchengladbach Offenend-spinnvorrichtung
DE3419300A1 (de) * 1984-05-24 1985-11-28 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Fadenabzugsrohr
DE3609114A1 (de) * 1986-03-19 1987-09-24 Schlafhorst & Co W Vorrichtung zum oe-spinnen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3220402C2 (de) * 1982-05-29 1985-03-21 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und Vorrichtung zum Herstellen eines mit einer OE-Rotorspinnmaschine gesponnenen Garns

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544721A1 (de) * 1975-10-07 1977-04-14 Feldmuehle Anlagen Prod Vorrichtung zum verspinnen
DE3016675A1 (de) * 1980-04-30 1981-11-05 W. Schlafhorst & Co, 4050 Mönchengladbach Offenend-spinnvorrichtung
DE3419300A1 (de) * 1984-05-24 1985-11-28 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Fadenabzugsrohr
DE3609114A1 (de) * 1986-03-19 1987-09-24 Schlafhorst & Co W Vorrichtung zum oe-spinnen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321943A (en) * 1991-06-12 1994-06-21 Spindelfabrik Suessen, Schurr, Stahlecker & Grill Gmbh Yarn withdrawal nozzle for open-end spinning arrangements
CZ297892B6 (cs) * 1997-09-03 2007-04-25 W. Schlafhorst Ag & Co. Vývodka príze
CN112011858A (zh) * 2019-05-29 2020-12-01 里特机械公司 用于空气纺纱机的纺纱喷嘴的捻线元件以及纺纱喷嘴
CN112011858B (zh) * 2019-05-29 2023-12-08 里特机械公司 用于空气纺纱机的纺纱喷嘴的捻线元件以及纺纱喷嘴

Also Published As

Publication number Publication date
DE59108215D1 (de) 1996-10-31
EP0445554A3 (en) 1991-11-13
EP0445554B1 (fr) 1996-09-25
DE4007517A1 (de) 1991-09-12

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