EP2420603B1 - Textilfaserschacht für eine Faser-Luftstrom-Einrichtung mit mehreren von einander beabstandete Trennstäbe - Google Patents

Textilfaserschacht für eine Faser-Luftstrom-Einrichtung mit mehreren von einander beabstandete Trennstäbe Download PDF

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Publication number
EP2420603B1
EP2420603B1 EP11177394.1A EP11177394A EP2420603B1 EP 2420603 B1 EP2420603 B1 EP 2420603B1 EP 11177394 A EP11177394 A EP 11177394A EP 2420603 B1 EP2420603 B1 EP 2420603B1
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Prior art keywords
fibre
fiber
divider
chute
rod
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EP11177394.1A
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English (en)
French (fr)
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EP2420603A3 (de
EP2420603A2 (de
Inventor
Hubert Hergeth
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots

Definitions

  • wire feeders have been used to feed fibers and air for 50 years when loading cards and web-forming machines.
  • lamellae or separating rods To improve the slippage of fibers, one also uses lamellae or separating rods.
  • the patent DE 33 04 571 C1 and the DE 1286436 A show such slats.
  • An L-shaped lamella shape is stable, but has a smaller opening area than separating flat bars or separating bars.
  • the separation bars have a lower air resistance.
  • a disadvantage of the Trennfstäben is a clogging of these rods after some time. This is done by placing individual fibers on the fiber side on both sides of a rod around the rod and twisting the ends by air vortex.
  • separation bars are in the DE 710 607 C , and the US 4,344,843 A disclosed.
  • Existing dividing bars or grate bars have the same depth over the entire length in the fiber flow direction and the air passage direction as in the case of the DE 9 421 331 U1 disclosed.
  • the object of the invention is to obtain the good air passage and to avoid a twirling of the fiber ends.
  • the depth of the separation bars in the fiber transport direction increases.
  • the separation bars are only free in the upper third for the fiber approach, then a fiber column has formed.
  • the twisting of the fiber ends requires a residence time. Due to the increasing depth of the separating rods, the twists are pulled apart again shortly after they have formed when the fibers are pulled down by the subsequent fiber flakes. This is still done as long as the ends of the fibers are not intensely twisted.
  • the depth of the separation rod increases from its smallest depth by at least 40%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

  • In der Textilindustrie werden beim Beschicken von Karden und Vliesbildemaschinen seit 50 Jahren Siebflächen zum Trennen von Fasern und Luft eingesetzt. Um das Rutschen von Fasern zu verbessern, setzt man auch Lamellen oder Trennstäbe ein. Das Patent DE 33 04 571 C1 und die DE 1286436 A zeigen solche Lamellen. Eine L-förmige Lamellenform ist stabil, hat aber eine geringere Öffnungsfläche als Trennflachstäbe bzw. Trennstäbe. Die Trennstäbe haben einen geringeren Luftwiderstand. Nachteilig bei den Trennfstäben ist ein Zusetzen dieser Stäbe nach einiger Zeit. Dies erfolgt dadurch, dass sich einzelne Fasern von der Faserseite her zu beiden Seiten eines Stabes um den Stab legen und sich die Enden durch Luftwirbel verzwirbeln. Die verzwirbelten Fasern werden dann nicht mehr durch die an den Trennstäben vorbeiziehenden Faserflocken mitgenommen. Weitere Ausführungsformen von Trennstäben sind in der DE 710 607 C , und der US 4 344 843 A offenbart. Bestehende Trennstäbe oder Roststäbe haben in Faserflussrichtung und Luftdurchtrittsrichtung die gleiche Tiefe über die ganze Länge wie zum Beispiel in der DE 9 421 331 U1 offenbart.
  • Aufgabe der Erfindung ist es, den guten Luftdurchlass zu erhalten und ein Verzwirbeln der Faserenden zu vermeiden.
  • Die Aufgabe wird durch den Tentilfaserschacht gemäß Anspruch 1 gelöst.
  • Erfindungsgemäß nimmt die Tiefe der Trennstäbe in Fasertransportrichtung zu. In der Praxis sind die Trennstäbe nur im oberen Drittel frei für den Faseranflug, danach hat sich eine Fasersäule gebildet. Die Verzwirbelung der Faserenden erfordert eine Verweildauer. Durch die zunehmende Tiefe der Trennstäbe werden beim Herunterziehen der Fasern durch die nachfolgenden Faserflocken die Verzwirbelungen bereits kurz nach dem Entstehen wieder auseinandergezogen. Dies erfolgt noch, solange die Enden der Fasern nicht intensiv verzwirbelt sind.
  • Dabei nimmt bei einer bevorzugten Ausführungsform der Erfindung die Tiefe des Trennstabs ausgehend von seiner kleinsten Tiefe um mindestens 40% zu.
  • Die Erfindung wird anhand zweier Zeichnungen beschrieben. Durch eine Einblasung (1) gelangen Fasern in einen Schacht (2). Die Transportluft tritt durch Trennstäbe (5) aus und es bildet sich eine Fasersäule (3), die durch eine Abzugseinrichtung (4) aus dem Schacht gezogen wird. Die Trennstäbe vergrößern sich entlang der Bewegungsrichtung (7) der Fasersäule in Richtung der Luftdurchströmung (8).
  • Einzelne Fasern (6) legen sich durch die Luftströmung um einen Trennstab, und die beiden Enden versuchen sich zu verzwirbeln. Durch die zunehmende Tiefe (t) des Trennstabes werden die Verzwirbelungen beim Rutschen entlang des Trennstabes aufgelöst.

Claims (3)

  1. Textilfaserschacht (2) für eine Faser-Luftstrom-Einrichtung mit mehreren Trennstäben (5) zum Trennen von Fasern (6) und Luft, wobei jeder Trennstab mit seiner Längsrichtung entlang der Fasertransportrichtung (7) ausgerichtet ist, die Trennstäbe in dem Textilfaserschacht (2) angeordnet sind und die Luft zum Austritt aus dem Textilfaserschacht (2) zu beiden Seiten um die Trennstäbe strömt, dadurch gekennzeichnet, dass die Tiefe (t) jedes Trennstabs (5) entlang der Fasertransportrichtung (7) zunimmt, sodass Verzwirbelungen der Faserenden von Fasern (6), die sich durch die Luftströmung auf den beiden Seiten des Trennstabs (5) um den Trennstab gelegt haben und an dem Trennstab in der Fasertransportrichtung (7) entlang rutschen, durch die zunehmende Tiefe des Trennstabs aufgelöst werden.
  2. Textilfaserschacht nach Anspruch 1, bei dem sich die Tiefe des Trennstabs (5) um mindestens 40 % seiner kleinsten Tiefe erhöht.
  3. Faser-Luftstrom-Einrichtung mit einem Textilfaserschacht nach einem der vorstehenden Ansprüche.
EP11177394.1A 2010-08-18 2011-08-12 Textilfaserschacht für eine Faser-Luftstrom-Einrichtung mit mehreren von einander beabstandete Trennstäbe Active EP2420603B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010034778A DE102010034778A1 (de) 2010-08-18 2010-08-18 Trennstab

Publications (3)

Publication Number Publication Date
EP2420603A2 EP2420603A2 (de) 2012-02-22
EP2420603A3 EP2420603A3 (de) 2014-03-05
EP2420603B1 true EP2420603B1 (de) 2017-01-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11177394.1A Active EP2420603B1 (de) 2010-08-18 2011-08-12 Textilfaserschacht für eine Faser-Luftstrom-Einrichtung mit mehreren von einander beabstandete Trennstäbe

Country Status (3)

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EP (1) EP2420603B1 (de)
DE (1) DE102010034778A1 (de)
ES (1) ES2622439T3 (de)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE710607C (de) * 1939-04-23 1941-09-17 Saechsische Textilmaschinen Fa Vorrichtung zum Abscheiden von Fasergut aus einem Luftstrom
CH437063A (de) * 1966-04-05 1967-05-31 Rieter Ag Maschf Vorrichtung zum Abscheiden von aufgelösten Faserflocken aus einem Transportluftstrom
DE1950002B1 (de) * 1969-10-03 1971-03-25 Truetzschler & Co Ablagerungsschacht fuer die pneumatische Flockenfoerderung
CH511646A (de) * 1970-07-28 1971-08-31 Rieter Ag Maschf Verfahren und Vorrichtung zum Abscheiden von aufgelösten Faserflocken aus einem Luftstrom
DE3006831A1 (de) * 1980-02-23 1981-09-17 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum abscheiden von verunreinigungen aus baumwoll-faserflocken
DE3304571C1 (de) 1983-02-10 1984-05-03 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum Abscheiden von aufgeloesten Faserflocken aus einem Luftstrom,z.B. Flockenbeschickung fuer eine Karde
DE8605999U1 (de) * 1986-03-05 1990-07-05 Hergeth, Hubert A., Dipl.-Ing. Dipl.-Wirtsch.-Ing., 52076 Aachen Vorrichtung zum Abscheiden von Fasern
DE9421331U1 (de) * 1994-10-10 1995-12-07 Trützschler GmbH & Co KG, 41199 Mönchengladbach Vorrichtung zum Abscheiden von aufgelösten Faserflocken aus einem Luftstrom, z.B. Flockenbeschickung für eine Karde, Reiniger o.dgl.
DE102004021453A1 (de) * 2004-04-29 2005-11-17 Concert Gmbh Formkopf und Verfahren zum Herstellen eines Faservlieses
WO2006086911A1 (de) * 2005-02-21 2006-08-24 Maschinenfabrik Rieter Ag Flockenspeisung und flockenspeicher.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2420603A3 (de) 2014-03-05
EP2420603A2 (de) 2012-02-22
ES2622439T3 (es) 2017-07-06
DE102010034778A1 (de) 2012-02-23

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