EP1573098A1 - Device for producing a spun fibre - Google Patents

Device for producing a spun fibre

Info

Publication number
EP1573098A1
EP1573098A1 EP03812577A EP03812577A EP1573098A1 EP 1573098 A1 EP1573098 A1 EP 1573098A1 EP 03812577 A EP03812577 A EP 03812577A EP 03812577 A EP03812577 A EP 03812577A EP 1573098 A1 EP1573098 A1 EP 1573098A1
Authority
EP
European Patent Office
Prior art keywords
traversing
air nozzle
rollers
drafting system
nozzle unit
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
EP03812577A
Other languages
German (de)
French (fr)
Other versions
EP1573098B1 (en
Inventor
Gerd Stahlecker
Gernot SCHÄFFLER
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 EP1573098A1 publication Critical patent/EP1573098A1/en
Application granted granted Critical
Publication of EP1573098B1 publication Critical patent/EP1573098B1/en
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
    • 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
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • D01H13/06—Traversing arrangements
    • 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

Definitions

  • the invention relates to a device for producing a spun thread from a staple fiber band, with a drafting system containing a plurality of roller pairs for drawing the staple fiber band into a fiber structure that can be predetermined, with an air nozzle unit that follows the drafting system and has an inlet opening for the fiber structure, and with a traversing device for traversing one the fiber assembly leading component transversely to the pairs of rollers of the drafting system, without causing the fiber assembly to escape transversely to the inlet opening of the air nozzle unit.
  • a device of this type is known from DE 31 45 208 C2.
  • the component guiding the fiber structure is a lower apron which carries out a traversing movement on its own - alternating with the assigned upper apron, if necessary.
  • the traversing speed of the known device should be so slow that the deviation of the fiber structure from the normal path is kept as low as possible, and in particular that the fiber structure does not have a meandering path so that the center of the fiber structure released by the last pair of rollers of the drafting system does not escape to the inlet opening of the air nozzle unit.
  • the latter requirement is met only incompletely, particularly when air nozzle units are used whose delivery speeds are up to 600 m per minute.
  • the lifespan of the apron is extended, whereas the wear on the covers of the drafting system is not reduced.
  • the invention is based on the object, on the one hand, to ensure that the fibers always enter the inlet opening in the same way, even at high delivery speeds, and, on the other hand, to extend the service life of both the covers and the apron of the drafting system.
  • the object is achieved in that the traversing device is connected in terms of drive both to at least one compressor assigned to a pair of rollers of the drafting system and determining the width of the fiber structure, and to the air nozzle assembly.
  • a safe fiber entry into the air nozzle unit is achieved, since this oscillates together with the fiber structure.
  • the wear on both the covers and the apron is reduced, especially if the traversing movement is carried out very slowly and the entire width of the covers is used.
  • the compressors oscillate in a manner known per se and form the component guiding the fiber structure, oscillating devices that have already proven themselves in practice can be used in principle, for example oscillating an inlet compressor and an intermediate field compressor. These compressors are in each case arranged upstream of the assigned roller pair, with no compressor usually being assigned to the output roller pair.
  • the at least one compressor and the air nozzle unit are arranged on a common carrier.
  • a thread cleaner arranged downstream of the air nozzle unit can also be arranged on this carrier.
  • the thread drawn from the air nozzle unit is also changed, so that wear is also reduced on the pair of draw-off rollers.
  • the traversing device itself can be designed differently.
  • the traversing device contains a traversing rod which runs along the machine and is assigned to a plurality of spinning stations. Since the pairs of rollers of the drafting unit are usually shut down in the event of thread breakage to avoid incorrect drawing, the traversing must also be stopped. In the case of a traversing rod running over several spinning stations, the traversing of a single spinning station must therefore be able to be decoupled from the general traversing movement if necessary. This can be achieved by a mechanism that clicks back onto the traversing rod after the spinning station has been put back into operation.
  • each spinning station is assigned its own traversing device, which is connected in terms of drive to the pair of input rollers of the drafting system.
  • the drafting system must be stopped if the thread breaks.
  • the traversing is automatically stopped when the drafting system is stopped.
  • FIG. 1 shows a side view of a device according to the invention
  • Figure 2 is a view in the direction of arrow II of Figure 1.
  • the device according to FIGS. 1 and 2 is used to produce a spun thread 1 from a staple fiber tape or also a roving 2.
  • the device contains a drafting device 3 and an air nozzle unit 4 as essential components.
  • the staple fiber tape 2 to be spun is supplied to the drafting device 3 in the direction of delivery A and is fed as a spun thread 1 in the take-off direction B to a winding device (not shown).
  • a pair of draw-off rollers 5, 6 serves to pull the thread 1 out of the air nozzle unit 4.
  • the drafting system 3 is designed as a three-cylinder drafting system and contains a total of three pairs of rollers 7,8; 9,10; 11, 12, each of which contains a lower roller and an upper roller.
  • the pair of rollers 7, 8 is the pair of input rollers
  • the pair of rollers 9, 10 is the middle pair of rollers provided with aprons 13 and 14
  • the pair of rollers 11, 12 is the pair of output rollers.
  • the staple fiber strip or roving 2 is drawn in a known manner to a desired, specifiable fineness. Following the drafting system 3, there is then a fiber structure 15 which is stretched but still untwisted.
  • roller speeds required for stretching are achieved in the present case by drive motors 16, 17 and 18, to which the respective lower rollers 8, 10 and 12 are connected.
  • the inlet roller pair 7, 8 is preceded by an inlet compressor 19 for the incoming staple fiber sliver or roving 2 and the middle roller pair 9, 10 by an intermediate field compressor 20.
  • the air nozzle unit 4 that follows the drafting system 3 at a short distance and gives the spinning rotation can in principle be of any design, but preferably a construction Art according to WO 02/24993 is addressed because such an air nozzle unit 4 allows particularly high delivery speeds.
  • the air nozzle unit 4 is therefore not described in detail.
  • it contains an inlet opening 21 for the fiber structure 15, furthermore a thread take-off channel 22 for the spun thread 1, that is to say provided with a spinning twist, and several pressure jet nozzles 23, which generate a swirling flow in a known manner.
  • a thread monitor is arranged downstream of the air nozzle unit 4, which in the present case is additionally designed as a thread cleaner 24.
  • Such thread cleaners 24 are known from the prior art. It is followed by the already mentioned pair of draw rollers 5,6.
  • the drafting system 3 With air spinning, delivery speeds of up to 600 m per minute can be achieved. In the drafting system 3, this leads to increased wear on the covers of the pressure rollers 7, 9 and 11 as well as the belt straps 13 and 14. So that the belt straps 13 and 14 do not have to be constantly replaced and the covers do not have to be reground at short intervals, the drafting system 3 is the Fiber structure 15 across the roller pairs 7,8; 9, 10; 11, 12 oscillates, as is already known in principle from the prior art. Care should, however, be taken to ensure that — as the prior art mentioned at the outset also strives for, even if only incompletely — the fiber assembly 15 is not brought out of alignment transversely to the inlet opening 21 of the air nozzle assembly 4.
  • the inlet opening 21 of the air nozzle unit 4 must be positioned very precisely to the outlet of the drafting system 3 and to the fiber structure 15 emerging from the drafting system 3. Even a slight displacement of the inlet opening 21 relative to the emerging fibers affects the thread quality and can even lead to a thread break. On the one hand, this is to ensure that the fibers always enter inlet opening 21 in the same way, and that on the other hand the lifespan of both the covers and the straps 13 and 14 is extended.
  • a traversing device 25 is now provided, which is driven by at least one compressor 19 or 20, which is assigned to a pair of rollers 7, 8; connected is. This ensures a safe fiber entry into the inlet opening 21 since the air nozzle unit 4 oscillates synchronously with the fiber assembly 15. At the same time, the fiber structure 15 is slowly moved over the entire width of the belt straps 13 and 14 and the covers of the rollers 7, 9 and 11, so that their service life is significantly extended.
  • both the two compressors namely the inlet compressor 19 and the intermediate field compressor 20, as well as the air nozzle unit 4 and the subsequent thread cleaner 24 are arranged on a common, oscillating carrier 26.
  • connecting elements 27, 28, 29 and 30 are used.
  • the traversing device 25 can contain a traversing rod 31 running along the machine and assigned to a plurality of spinning stations, as is preferably shown in the figures. This traversing rod 31 is moved very slowly in accordance with the traversing directions C and D, specifically over the greatest possible width of the coverings of the rollers 7, 9 and 11 or the running straps 13 and 14. If a thread breakage occurs for any reason, this is avoided the drafting system 3 is stopped by incorrect delays, that is to say the roller pairs 7, 8; 9, 10 and 11, 12 are stopped. In such a case, the traversing device 25 must also be stopped, which happens in the case of a central traversing rod 31 in that, in the event of a thread break, the affected one Single spinning station is decoupled from the general traversing movement by means not shown.
  • the traversing device 25 extends only individually over a single spinning station.
  • the traversing device 25 is automatically stopped as well.

Landscapes

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

Abstract

An assembly spins a fiber from a layer of staple fiber and has a drafting station (3) surrendering fibers to an air-jet station (4). The assembly further has a traversing station (25) connected to the compressors (19, 20) serving the drafting station and air jet. The compressor and air jet are located on a common support (26). The air jet is co-located with a thread cleaner (24). The traversing assembly moves along a rod (31) past a series of spinning stations. Each spinning station has its own bobbin changing unit which shares the same drive system with the drafting feed rollers (7, 8).

Description

Beschreibung Vorrichtung zum Herstellen eines gesponnenen Fadens Description Device for producing a spun thread
Die Erfindung betrifft eine Vorrichtung zum Herstellen eines gesponnenen Fadens aus einem Stapelfaserband, mit einem mehrere Walzenpaare enthaltenden Streckwerk zum Verziehen des Stapelfaserbandes zu einem Faserverband vorgebbarer Feinheit, mit einem dem Streckwerk nachfolgenden, eine Einlassöffnung für den Faserverband aufweisenden Luftdüsenaggregat sowie mit einer Changiereinrichtung zum Changieren eines den Faserverband führenden Bauteils quer zu den Walzenpaaren des Streckwerks, ohne den Faserverband quer zur Einlassöffnung des Luftdüsenaggregates aus der Flucht zu bringen.The invention relates to a device for producing a spun thread from a staple fiber band, with a drafting system containing a plurality of roller pairs for drawing the staple fiber band into a fiber structure that can be predetermined, with an air nozzle unit that follows the drafting system and has an inlet opening for the fiber structure, and with a traversing device for traversing one the fiber assembly leading component transversely to the pairs of rollers of the drafting system, without causing the fiber assembly to escape transversely to the inlet opening of the air nozzle unit.
Eine Vorrichtung dieser Art ist durch die DE 31 45 208 C2 Stand der Technik. Bei dieser bekannten Vorrichtung ist das den Faserverband führende Bauteil ein Unterriemchen, welches für sich allein - gegebenenfalls alternierend mit dem zugeordneten Oberriemchen - eine Changierbewegung ausführt. Die Changiergeschwindigkeit der bekannten Vorrichtung soll so langsam sein, dass die Abweichung des Faserverbandes vom normalen Laufweg so gering wie möglich gehalten wird, und dass insbesondere kein mäanderförmiger Laufweg des Faserverbandes entsteht, damit die Mitte des vom letzten Walzenpaar des Streckwerks freigegebenen Faserverbandes nicht aus der Flucht zur Einlassöffnung des Luftdüsenaggregates gerät.A device of this type is known from DE 31 45 208 C2. In this known device, the component guiding the fiber structure is a lower apron which carries out a traversing movement on its own - alternating with the assigned upper apron, if necessary. The traversing speed of the known device should be so slow that the deviation of the fiber structure from the normal path is kept as low as possible, and in particular that the fiber structure does not have a meandering path so that the center of the fiber structure released by the last pair of rollers of the drafting system does not escape to the inlet opening of the air nozzle unit.
Die letztgenannte Forderung gelingt nur sehr unvollkommen, insbesondere dann, wenn Luftdüsenaggregate eingesetzt werden, deren Liefergeschwindigkeiten bis zu 600 m pro Minute betragen. Außerdem wird bei der bekannten Vorrichtung lediglich die Lebensdauer der Laufriem- chen verlängert, wohingegen die Abnutzung der Bezüge des Streckwerks nicht verringert wird. Der Erfindung liegt die Aufgabe zu Grunde, zum einen sicherzustellen, dass die Fasern auch bei hohen Liefergeschwindigkeiten immer in gleicher Weise in die Einlassöffnung eintreten, und zum anderen die Lebensdauer sowohl der Bezüge als auch der Laufriemchen des Streckwerks zu verlängern.The latter requirement is met only incompletely, particularly when air nozzle units are used whose delivery speeds are up to 600 m per minute. In addition, in the known device only the lifespan of the apron is extended, whereas the wear on the covers of the drafting system is not reduced. The invention is based on the object, on the one hand, to ensure that the fibers always enter the inlet opening in the same way, even at high delivery speeds, and, on the other hand, to extend the service life of both the covers and the apron of the drafting system.
Die Aufgabe wird dadurch gelöst, dass die Changiereinrichtung sowohl mit wenigstens einem einem Walzenpaar des Streckwerks zugeordneten und die Breite des Faserverbandes festlegenden Verdichter als auch mit dem Luftdüsenaggregat antriebsmäßig verbunden ist.The object is achieved in that the traversing device is connected in terms of drive both to at least one compressor assigned to a pair of rollers of the drafting system and determining the width of the fiber structure, and to the air nozzle assembly.
Mit den Merkmalen nach der Erfindung gelingt ein sicherer Fasereinlauf in das Luftdüsenaggregat, da dieses zusammen mit dem Faserverband changiert. Gleichzeitig wird die Abnutzung sowohl der Bezüge als auch der Laufriemchen verringert, insbesondere wenn die Changierbewegung sehr langsam durchgeführt und die gesamte Breite der Bezüge ausnutzt wird. Da gemäß der Erfindung in an sich bekannter Weise die Verdichter changieren und das den Faserverband führende Bauteil bilden, können im Prinzip Changiereinrichtungen eingesetzt werden, die sich bereits in der Praxis bewährt haben, beispielsweise das Changieren eines Einlaufverdichters sowie eines Zwischenfeldverdichters. Diese Verdichter sind jeweils dem zugeordneten Walzenpaar vorgeordnet, wobei dem Ausgangswalzenpaar üblicherweise kein Verdichter zugeordnet ist.With the features according to the invention, a safe fiber entry into the air nozzle unit is achieved, since this oscillates together with the fiber structure. At the same time, the wear on both the covers and the apron is reduced, especially if the traversing movement is carried out very slowly and the entire width of the covers is used. Since, according to the invention, the compressors oscillate in a manner known per se and form the component guiding the fiber structure, oscillating devices that have already proven themselves in practice can be used in principle, for example oscillating an inlet compressor and an intermediate field compressor. These compressors are in each case arranged upstream of the assigned roller pair, with no compressor usually being assigned to the output roller pair.
In bevorzugter Ausgestaltung der Erfindung sind der wenigstens eine Verdichter und das Luftdüsenaggregat an einem gemeinsamen Träger angeordnet. An diesem Träger kann zusätzlich ein dem Luftdüsenaggregat nachgeordneter Fadenreiniger angeordnet sein. Dadurch wird der aus dem Luftdüsenaggregat abgezogene Faden ebenfalls changiert, so dass auch am Abzugswalzenpaar der Verschleiß verringert wird. Die Changiereinrichtung selbst kann unterschiedlich ausgestaltet sein.In a preferred embodiment of the invention, the at least one compressor and the air nozzle unit are arranged on a common carrier. A thread cleaner arranged downstream of the air nozzle unit can also be arranged on this carrier. As a result, the thread drawn from the air nozzle unit is also changed, so that wear is also reduced on the pair of draw-off rollers. The traversing device itself can be designed differently.
Bei einer Ausführung ist vorgesehen, dass die Changiereinrichtung eine längs der Maschine verlaufende, mehreren Spinnstellen zugeordnete Changierstange enthält. Da bei Fadenbruch, zur Vermeidung von Fehlverzügen, üblicherweise die Walzenpaare des Streckwerks stillgesetzt werden, muss dabei auch die Changierung abgestellt werden. Im Falle einer über mehrere Spinnstellen laufenden Changierstange muss deshalb die Changierung einer Einzelspinnstelle von der allgemeinen Changierbewegung im Bedarfsfalle abkoppelbar sein. Dies lässt sich durch einen Mechanismus erreichen, der sich wieder an die Changierstange anklinkt, nachdem die Spinnstelle wieder in Betrieb gesetzt worden ist.In one embodiment it is provided that the traversing device contains a traversing rod which runs along the machine and is assigned to a plurality of spinning stations. Since the pairs of rollers of the drafting unit are usually shut down in the event of thread breakage to avoid incorrect drawing, the traversing must also be stopped. In the case of a traversing rod running over several spinning stations, the traversing of a single spinning station must therefore be able to be decoupled from the general traversing movement if necessary. This can be achieved by a mechanism that clicks back onto the traversing rod after the spinning station has been put back into operation.
Bei einer anderen Ausführung ist vorgesehen, dass jeder Spinnstelle eine eigene Changier-einrichtung zugeordnet ist, die mit dem Eingangswalzenpaar des Streckwerks antriebsmäßig verbunden ist. Auch in diesem Falle muss bei einem Fadenbruch das Streckwerk gestoppt werden. Allerdings wird durch die antriebsmäßige Koppelung der Changiereinrichtung mit dem Eingangs-walzenpaar des Streckwerks automatisch die Changierung mit stillgesetzt, wenn das Streckwerk gestoppt wird.In another embodiment, it is provided that each spinning station is assigned its own traversing device, which is connected in terms of drive to the pair of input rollers of the drafting system. In this case, too, the drafting system must be stopped if the thread breaks. However, due to the drive coupling of the traversing device to the pair of input rollers of the drafting system, the traversing is automatically stopped when the drafting system is stopped.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines nur schematisch dargestellten Ausführungsbeispiels.Further advantages and features of the invention result from the following description of an exemplary embodiment shown only schematically.
Es zeigen:Show it:
Figur 1 eine Seitenansicht auf eine erfindungsgemäße Vorrichtung,FIG. 1 shows a side view of a device according to the invention,
Figur 2 eine Ansicht in Richtung des Pfeiles II der Figur 1. Die Vorrichtung nach Figuren 1 und 2 dient dem Herstellen eines gesponnenen Fadens 1 aus einem Stapelfaserband oder auch einem Vorgarn 2. Die Vorrichtung enthält als wesentliche Bestandteile ein Streckwerk 3 sowie ein Luftdüsenaggregat 4.Figure 2 is a view in the direction of arrow II of Figure 1. The device according to FIGS. 1 and 2 is used to produce a spun thread 1 from a staple fiber tape or also a roving 2. The device contains a drafting device 3 and an air nozzle unit 4 as essential components.
Das zu verspinnende Stapelfaserband 2 wird dem Streckwerk 3 in Zulieferrichtung A zugeliefert und als ersponnener Faden 1 in Abzugsrichtung B einer nicht dargestellten Aufspuleinrichtung zugeführt. Dem Abziehen des Fadens 1 aus dem Luftdüsenaggregat 4 dient ein Abzugswalzenpaar 5,6.The staple fiber tape 2 to be spun is supplied to the drafting device 3 in the direction of delivery A and is fed as a spun thread 1 in the take-off direction B to a winding device (not shown). A pair of draw-off rollers 5, 6 serves to pull the thread 1 out of the air nozzle unit 4.
Das Streckwerk 3 ist als Drei-Zylinder-Streckwerk ausgeführt und enthält insgesamt drei Walzenpaare 7,8;9,10;11 ,12, die jeweils eine Unterwalze und eine Oberwalze enthalten. Das Walzenpaar 7,8 ist das Eingangs- walzenpaar, das Walzenpaar 9,10 das mit Laufriemchen 13 und 14 versehene mittlere Walzenpaar und das Walzenpaar 11 ,12 das Ausgangswalzenpaar. In einem solchen Streckwerk 3 wird in bekannter Weise das Stapelfaserband oder Vorgarn 2 bis zu einer gewünschten vorgebbaren Feinheit verzogen. Im Anschluss an das Streckwerk 3 liegt dann ein Faserverband 15 vor, der verstreckt, jedoch noch ungedreht ist.The drafting system 3 is designed as a three-cylinder drafting system and contains a total of three pairs of rollers 7,8; 9,10; 11, 12, each of which contains a lower roller and an upper roller. The pair of rollers 7, 8 is the pair of input rollers, the pair of rollers 9, 10 is the middle pair of rollers provided with aprons 13 and 14 and the pair of rollers 11, 12 is the pair of output rollers. In a drafting system 3 of this type, the staple fiber strip or roving 2 is drawn in a known manner to a desired, specifiable fineness. Following the drafting system 3, there is then a fiber structure 15 which is stretched but still untwisted.
Die für das Verstrecken erforderlichen Walzengeschwindigkeiten werden im vorliegenden Falle durch Antriebsmotoren 16,17 und 18 erreicht, an welche die jeweiligen Unterwalzen 8,10 und 12 angeschlossen sind.The roller speeds required for stretching are achieved in the present case by drive motors 16, 17 and 18, to which the respective lower rollers 8, 10 and 12 are connected.
Wie an sich bekannt, ist dem Eingangswalzenpaar 7,8 ein Einlaufverdichter 19 für das einlaufende Stapelfaserband oder Vorgarn 2 und dem mittleren Walzenpaar 9,10 ein Zwischenfeldverdichter 20 vorgeordnet.As is known per se, the inlet roller pair 7, 8 is preceded by an inlet compressor 19 for the incoming staple fiber sliver or roving 2 and the middle roller pair 9, 10 by an intermediate field compressor 20.
Das dem Streckwerk 3 in geringem Abstand nachfolgende und die Spinndrehung erteilende Luftdüsenaggregat 4 kann bei dieser Erfindung im Prinzip beliebiger Bauart sein, wobei jedoch vorzugsweise eine Bau- art gemäß der WO 02/24993 angesprochen ist, weil ein derartiges Luftdüsenaggregat 4 besonders hohe Liefergeschwindigkeiten erlaubt. Das Luftdüsenaggregat 4 wird daher nicht näher beschrieben. Es enthält jedenfalls eine Einlassöffnung 21 für den Faserverband 15, ferner einen Fadenabzugskanal 22 für den ersponnenen, d.h. mit einer Spinndrehung versehenen Faden 1 sowie mehrere Druckstrahldüsen 23, welche in bekannter Weise eine die Drallerteilung bewirkende Wirbelströmung erzeugen.In this invention, the air nozzle unit 4 that follows the drafting system 3 at a short distance and gives the spinning rotation can in principle be of any design, but preferably a construction Art according to WO 02/24993 is addressed because such an air nozzle unit 4 allows particularly high delivery speeds. The air nozzle unit 4 is therefore not described in detail. In any case, it contains an inlet opening 21 for the fiber structure 15, furthermore a thread take-off channel 22 for the spun thread 1, that is to say provided with a spinning twist, and several pressure jet nozzles 23, which generate a swirling flow in a known manner.
Dem Luftdüsenaggregat 4 ist ein Fadenwächter nachgeordnet, der im vorliegenden Fall zusätzlich als Fadenreiniger 24 ausgebildet ist. Solche Fadenreiniger 24 sind durch den Stand der Technik bekannt. Ihm folgt dann das bereits erwähnte Abzugswalzenpaar 5,6.A thread monitor is arranged downstream of the air nozzle unit 4, which in the present case is additionally designed as a thread cleaner 24. Such thread cleaners 24 are known from the prior art. It is followed by the already mentioned pair of draw rollers 5,6.
Beim Luftspinnen lassen sich Liefergeschwindigkeiten bis zu 600 m pro Minute realisieren. Dies führt im Streckwerk 3 zu einem erhöhten Verschleiß der Bezüge der Druckwalzen 7,9 und 11 sowie der Laufriemchen 13 und 14. Damit die Laufriemchen 13 und 14 nicht ständig ausgetauscht und die Bezüge nicht in kurzen Intervallen nachgeschliffen werden müssen, wird im Streckwerk 3 der Faserverband 15 quer zu den Walzenpaaren 7,8;9, 10; 11 ,12 changiert, wie dies im Grundsatz durch den Stand der Technik bereits bekannt ist. Dabei soll jedoch Sorge getragen werden, dass - wie dies auch der eingangs genannte Stand der Technik, wenn auch nur unvollkommen, anstrebt - der Faserverband 15 quer zur Einlassöffnung 21 des Luftdüsenaggregates 4 nicht aus der Flucht gebracht wird. Die Einlassöffnung 21 des Luftdüsenaggregates 4 muss sehr exakt zum Ausgang des Streckwerks 3 und zu dem aus dem Streckwerk 3 austretenden Faserverband 15 positioniert werden. Bereits eine leichte Verschiebung der Einlassöffnung 21 relativ zu den austretenden Fasern beeinträchtigt die Fadenqualität und kann sogar zu einem Fadenbruch führen. Es soll somit zum einen sichergestellt werden, dass die Fasern immer in gleicher Weise in die Einlassöffnung 21 eintreten, und dass zum anderen die Lebensdauer sowohl der Bezüge als auch der Laufriemchen 13 und 14 verlängert wird.With air spinning, delivery speeds of up to 600 m per minute can be achieved. In the drafting system 3, this leads to increased wear on the covers of the pressure rollers 7, 9 and 11 as well as the belt straps 13 and 14. So that the belt straps 13 and 14 do not have to be constantly replaced and the covers do not have to be reground at short intervals, the drafting system 3 is the Fiber structure 15 across the roller pairs 7,8; 9, 10; 11, 12 oscillates, as is already known in principle from the prior art. Care should, however, be taken to ensure that — as the prior art mentioned at the outset also strives for, even if only incompletely — the fiber assembly 15 is not brought out of alignment transversely to the inlet opening 21 of the air nozzle assembly 4. The inlet opening 21 of the air nozzle unit 4 must be positioned very precisely to the outlet of the drafting system 3 and to the fiber structure 15 emerging from the drafting system 3. Even a slight displacement of the inlet opening 21 relative to the emerging fibers affects the thread quality and can even lead to a thread break. On the one hand, this is to ensure that the fibers always enter inlet opening 21 in the same way, and that on the other hand the lifespan of both the covers and the straps 13 and 14 is extended.
Abweichend vom eingangs genannten Stand der Technik ist nun eine Changiereinrichtung 25 vorgesehen, die sowohl mit wenigstens einem einem Walzenpaar 7,8;9,10 des Streckwerks 3 zugeordneten und die Breite des Faserverbandes 15 festlegenden Verdichter 19 oder 20 als auch mit dem Luftdüsenaggregat 4 antriebsmäßig verbunden ist. Dadurch wird ein sicherer Fasereinlauf in die Einlassöffnung 21 gewährleistet, da das Luftdüsenaggregat 4 synchron zum Faserverband 15 changiert. Gleichzeitig wird der Faserverband 15 langsam über die gesamte Breite der Laufriemchen 13 und 14 sowie der Bezüge der Walzen 7,9 und 11 bewegt, so dass deren Lebensdauer deutlich verlängert wird.Deviating from the prior art mentioned at the outset, a traversing device 25 is now provided, which is driven by at least one compressor 19 or 20, which is assigned to a pair of rollers 7, 8; connected is. This ensures a safe fiber entry into the inlet opening 21 since the air nozzle unit 4 oscillates synchronously with the fiber assembly 15. At the same time, the fiber structure 15 is slowly moved over the entire width of the belt straps 13 and 14 and the covers of the rollers 7, 9 and 11, so that their service life is significantly extended.
In erfinderischer Ausgestaltung ist nun vorgesehen, dass sowohl die beiden Verdichter, nämlich der Einlaufverdichter 19 und der Zwischenfeldverdichter 20, als auch das Luftdüsenaggregat 4 und der nachfolgende Fadenreiniger 24 an einem gemeinsamen changierenden Träger 26 angeordnet sind. Hierfür dienen Verbindungselemente 27, 28,29 und 30. Auf diese Weise werden die bereits angesprochenen Vorteile erzielt.In an inventive embodiment, it is now provided that both the two compressors, namely the inlet compressor 19 and the intermediate field compressor 20, as well as the air nozzle unit 4 and the subsequent thread cleaner 24 are arranged on a common, oscillating carrier 26. For this purpose, connecting elements 27, 28, 29 and 30 are used. The advantages already mentioned are achieved in this way.
Die Changiereinrichtung 25 kann eine längs der Maschine verlaufende, mehreren Spinnstellen zugeordnete Changierstange 31 enthalten, wie in den Figuren bevorzugt dargestellt. Diese Changierstange 31 wird ganz langsam entsprechend den Changierrichtungen C und D bewegt, und zwar über eine möglichst große Breite der Bezüge der Walzen 7, 9 und 11 bzw. der Laufriemchen 13 und 14. Wenn dabei aus irgendwelchen Gründen ein Fadenbruch entsteht, wird zur Vermeidung von Fehlverzügen das Streckwerk 3 gestoppt, also die Walzenpaare 7,8;9,10 sowie 11 ,12 stillgesetzt. In einem solchen Falle muss auch die Changiereinrichtung 25 stillgesetzt werden, was bei einer zentralen Changierstange 31 dadurch geschieht, dass im Falle eines Fadenbruches die betroffene Einzelspinnstelle von der allgemeinen Changierbewegung mittels nicht dargestellter Einrichtungen abgekoppelt wird.The traversing device 25 can contain a traversing rod 31 running along the machine and assigned to a plurality of spinning stations, as is preferably shown in the figures. This traversing rod 31 is moved very slowly in accordance with the traversing directions C and D, specifically over the greatest possible width of the coverings of the rollers 7, 9 and 11 or the running straps 13 and 14. If a thread breakage occurs for any reason, this is avoided the drafting system 3 is stopped by incorrect delays, that is to say the roller pairs 7, 8; 9, 10 and 11, 12 are stopped. In such a case, the traversing device 25 must also be stopped, which happens in the case of a central traversing rod 31 in that, in the event of a thread break, the affected one Single spinning station is decoupled from the general traversing movement by means not shown.
Es kann jedoch alternativ vorgesehen sein, , dass sich die Changiereinrichtung 25 nur individuell über eine einzige Spinnstelle erstreckt. In diesem Falle ist es zweckmäßig, den Antrieb der Changierstange 31 vom Antrieb des Eingangswalzenpaares 7,8 abzugreifen, was in Figur 1 strichpunktiert mit einer solchen Antriebskoppelung 32 angedeutet ist. In einem solchen Falle wird, wenn das Eingangswalzenpaar 7,8 bei Fadenbruch stillgesetzt wird, automatisch die Changiereinrichtung 25 mit gestoppt. However, it can alternatively be provided that the traversing device 25 extends only individually over a single spinning station. In this case, it is expedient to tap the drive of the traversing rod 31 from the drive of the pair of input rollers 7, 8, which is indicated by a dash-dotted line in FIG. 1 with such a drive coupling 32. In such a case, when the pair of input rollers 7, 8 is stopped when the thread breaks, the traversing device 25 is automatically stopped as well.

Claims

Patentansprüche claims
1. Vorrichtung zum Herstellen eines gesponnenen Fadens aus einem Stapelfaserband, mit einem mehrere Walzenpaare enthaltenden Streckwerk zum Verziehen des Stapelfaserbandes zu einem Faserverband vorgebbarer Feinheit, mit einem dem Streckwerk nachfolgenden, eine Einlassöffnung für den Faserverband aufweisenden Luftdüsenaggregat sowie mit einer Changiereinrichtung zum Changieren eines den Fasen/erband führenden Bauteils quer zu den Walzenpaaren des Streckwerks, ohne den Faserverband quer zur Einlassöffnung des Luftdüsenaggregates aus der Flucht zu bringen, dadurch gekennzeichnet, dass die Changiereinrichtung (25) sowohl mit wenigstens einem einem Walzenpaar (7,8;9,10) des Streckwerks (3) zugeordneten und die Breite des Faserverbandes (15) festlegenden Verdichter (19;20) als auch mit dem Luftdüsenaggregat (4) antriebsmäßig verbunden ist.1. An apparatus for producing a spun thread from a staple fiber band, with a drafting system containing a plurality of roller pairs for drawing the staple fiber band into a fiber structure of predeterminable fineness, with an air nozzle unit following the drafting system, having an inlet opening for the fiber structure, and with a traversing device for traversing one of the fibers / Erband leading component transversely to the pairs of rollers of the drafting system, without bringing the fiber structure transversely to the inlet opening of the air nozzle assembly, characterized in that the traversing device (25) with at least one pair of rollers (7,8; 9,10) of the The drafting device (3) assigned and the width of the fiber structure (15) defining the compressor (19; 20) and also connected to the air nozzle unit (4) in terms of drive.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der wenigstens eine Verdichter (19;20) und das Luftdüsenaggregat (4) an einem gemeinsamen Träger (26) angeordnet sind.2. Device according to claim 1, characterized in that the at least one compressor (19; 20) and the air nozzle unit (4) are arranged on a common carrier (26).
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass an dem Träger (26) zusätzlich ein dem Luftdüsenaggregat (4) nachgeordne- ter Fadenreiniger (24) angeordnet ist.3. Device according to claim 2, characterized in that a thread cleaner (24) is additionally arranged on the carrier (26) after the air nozzle unit (4).
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Changiereinrichtung (25) eine längs der Maschine verlaufende, mehreren Spinnstellen zugeordnete Changierstange (31) enthält. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jeder Spinnstelle eine eigene Changiereinrichtung (25) zugeordnet ist, die mit dem Eingangswalzenpaar (7,8) des Streckwerks (3) antriebsmäßig verbunden ist. 4. Device according to one of claims 1 to 3, characterized in that the traversing device (25) contains a traversing rod (31) running along the machine and assigned to a plurality of spinning stations. Device according to one of claims 1 to 3, characterized in that each spinning station is assigned its own traversing device (25) which is connected in terms of drive to the pair of input rollers (7, 8) of the drafting system (3).
EP03812577A 2002-12-09 2003-10-04 Device for producing a spun fibre Expired - Lifetime EP1573098B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10258720 2002-12-09
DE10258720A DE10258720A1 (en) 2002-12-09 2002-12-09 Textile fibre spinning station has a traversing station connected to compressors serving a drafting station and air jet
PCT/EP2003/010995 WO2004053214A1 (en) 2002-12-09 2003-10-04 Device for producing a spun fibre

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EP1573098A1 true EP1573098A1 (en) 2005-09-14
EP1573098B1 EP1573098B1 (en) 2008-11-26

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EP (1) EP1573098B1 (en)
JP (2) JP4688500B2 (en)
CN (1) CN1732296B (en)
AT (1) ATE415507T1 (en)
AU (1) AU2003276049A1 (en)
DE (2) DE10258720A1 (en)
WO (1) WO2004053214A1 (en)

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JP2011102460A (en) 2011-05-26
EP1573098B1 (en) 2008-11-26
CN1732296B (en) 2010-06-23
ATE415507T1 (en) 2008-12-15
JP4688500B2 (en) 2011-05-25
AU2003276049A1 (en) 2004-06-30
JP2006509114A (en) 2006-03-16
DE50310839D1 (en) 2009-01-08
DE10258720A1 (en) 2004-06-24
CN1732296A (en) 2006-02-08
WO2004053214A1 (en) 2004-06-24
JP5349506B2 (en) 2013-11-20

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