EP1006224B1 - Method and device for manufacturing condensed yarn - Google Patents

Method and device for manufacturing condensed yarn Download PDF

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Publication number
EP1006224B1
EP1006224B1 EP99121016A EP99121016A EP1006224B1 EP 1006224 B1 EP1006224 B1 EP 1006224B1 EP 99121016 A EP99121016 A EP 99121016A EP 99121016 A EP99121016 A EP 99121016A EP 1006224 B1 EP1006224 B1 EP 1006224B1
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EP
European Patent Office
Prior art keywords
suction
air flow
air
monitored
yarn
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.)
Expired - Lifetime
Application number
EP99121016A
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German (de)
French (fr)
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EP1006224A3 (en
EP1006224B2 (en
EP1006224A2 (en
Inventor
Andreas Dr. Olbrich
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Oerlikon Textile GmbH and Co KG
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Zinser Textilmaschinen GmbH
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Application filed by Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
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    • 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
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides

Definitions

  • the invention relates to a method and an apparatus for manufacturing of compacted yarn, in which after warping a fiber sliver this is compressed by means of suction air flow and then rotated.
  • the device for manufacturing shown schematically in Fig. 1 in side view of compressed yarn from a fiber sliver 1 has e.g. a first pair of rollers 2 and a downstream second pair of rollers 3. Between the two The fiber sliver 1 can experience a pre-delay in the roller pairs 2 and 3.
  • the Roller pair 3 can be equipped with straps 4 and 5, which Upper apron 4 stretched by an apron cage, not shown and the lower strap 5 can be guided over a support rail 6. This Rail 6 can also serve to support the top strap 4.
  • the embodiment of a device for producing compressed yarns 4 differs from that of FIG. 1 in that in the second Embodiment used as a suction device 12 'a perforated suction roller which is rotating.
  • This rotating, perforated suction roll works with two Counter rolls 13 and 14 together to form the warped fiber sliver 1 To compress suction air flow.
  • a first pair of rollers 2, 1 second pair of rollers 3 and a pair of output rollers 8 are provided.

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  • 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)

Description

Die Erfindung bezieht sich auf ein Verfahren sowie eine Vorrichtung zum Herstellen von verdichtetem Garn, bei welchem nach Verziehen einer Faserlunte diese mittels Saugluftströmung verdichtet und anschließend verdreht wird.The invention relates to a method and an apparatus for manufacturing of compacted yarn, in which after warping a fiber sliver this is compressed by means of suction air flow and then rotated.

Beim Herstellen von verdichtetem Garn erfolgt das Verdichten durch Saugluftströmung (DE 39 27 936 C2). Mit der Saugluftströmung werden bei diesen bekannten Verfahren Spinnfasern und in seltenen Fällen auch Ansammlungen von Spinnfasern abgesaugt. Dabei kann der Nachteil entstehen, dass die die Saugluft führenden Elemente ganz oder teilweise verstopfen. In diesem Fall lässt die Saugwirkung nach oder sie kommt sogar ganz zum Erliegen, wodurch die Garnqualität negativ beeinflusst wird.When producing compacted yarn, compacting is carried out by suction air flow (DE 39 27 936 C2). With the suction air flow in these known processes, staple fibers and in rare cases also Collections of staple fibers are sucked out. The disadvantage can arise that the elements guiding the suction air become blocked completely or partially. In this Case the suction effect diminishes or it even comes to a complete standstill, which affects the yarn quality negatively.

Entsprechend liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Verfahren bzw. eine Einrichtung zu schaffen, mit welcher die Vorrichtung auf das Vorhandensein der Saugluftströmung überwacht wird, um die Garnqualität sicherzustellen und die volle Effektivität der Vorrichtung zum Herstellen von verdichtetem Garn beizubehalten.Accordingly, the object of the present invention is a method or to create a device with which the device on the Presence of suction air flow is monitored to ensure yarn quality and the full effectiveness of the device for producing compacted Maintain yarn.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass - direkt oder indirekt - die Saugluftströmung in der saugseitigen Ableitung einer Verdichtungsvorrichtung an mindestens einer Saugstelle überwacht und bei überzufälliger Abweichung von einem Sollwert eine Meldung abgegeben wird, die ein Fehlerund/oder Abstellsignal auslöst. Hierbei kann an jeder einzelnen Saugstelle oder aber an einer Stelle gemessen werden, an der die saugseitigen Ableitungen zweier oder mehrerer Saugstellen bereits zusammengefasst sind. Der Luftdurchsatz kann über den mit ihm in funktionalem Zusammenhang stehenden Unterdruck oder direkt gemessen werden. Beim Messen des Druckes kann der Gesamtdruck, der statische Druck oder der Staudruck überwacht werden.This object is achieved in that - directly or indirectly - The suction air flow in the suction-side discharge of a compression device monitored at at least one suction point and in the event of an accidental deviation a message is issued from a setpoint indicating an error and / or Shutdown signal triggers. Here, at each individual suction point or but measured at a point where the suction-side derivatives of two or several suction points are already combined. The air flow can about the negative pressure related to it or be measured directly. When measuring the pressure, the total pressure, the static pressure or the dynamic pressure are monitored.

Die Überwachung erfolgt mit in der Strömungstechnik üblichen Messverfahren zum Messen von Drücken oder Strömungsgeschwindigkeiten wie Drucksonden, Anemometern oder ähnlichen Messfühlern. Ein Ansprechen der Messvorrichtung kann bei Über- und/oder Unterschreiten eines festen, einstellbaren Schwellenwertes oder beim überzufälligen Abweichen von dem an mindestens einer anderen Saugstelle augenblicklich herrschenden Wert folgen.Monitoring is carried out using measurement methods customary in flow technology for measuring pressures or flow velocities such as pressure probes, Anemometers or similar sensors. A response of the measuring device can when a fixed, adjustable threshold value is exceeded and / or fallen below or if there is an overdue departure from at least one other Suction point immediately follow the prevailing value.

Außer den geschilderten Verstopfungen sind auch andere Fehlfunktionen bei der Sauglufteinrichtung und deren Leitungen möglich, z. B. undichte Leitungen, nachlassende Leistung des Sauggebläses usw. Es kann daher aus Kostengründen sinnvoll sein, den Unterdruck nur an dem Saugelement zu messen, welches am weitesten vom Sauggebläse entfernt ist.In addition to the blockages described, there are other malfunctions in the Suction air device and its lines possible, e.g. B. leaky lines, declining performance of the suction fan etc. It can therefore be done for cost reasons be sensible to measure the vacuum only on the suction element, which on farthest from the suction fan.

Die Vorrichtung zum Herstellen von verdichtetem Garn, welche mit mindestens einem Streckwerk zum Verziehen der Faserlunte, mit mindestens einer Saugvorrichtung zum Verdichten der Faserlunte mittels Saugluftströmung und mit mindestens einer Verdrehvorrichtung ausgestattet ist, kann so gestaltet sein, dass mindestens eine der Saugvorrichtungen mit einer Einrichtung zum Erfassen der Saugluftströmung versehen ist, welche über eine Vergleichseinheit mit einer Auswerteeinheit in Verbindung steht. Diese Einrichtung zum Erfassen der Saugluftströmung kann in der Saugleitung der jeweiligen Saugvorrichtung angeordnet sein. Die Auswerteeinheit kann als Alarm- und/oder Abstelleinrichtung oder als Anzeigevorrichtung gestaltet sein. The device for producing compacted yarn, which with at least a drafting device for drawing the fiber sliver, with at least one suction device for compacting the fiber sliver by means of suction air flow and with at least a twisting device can be designed so that at least one of the suction devices with a device for detecting the Suction air flow is provided, which with a comparison unit with a Evaluation unit is connected. This facility for capturing the Suction air flow can be arranged in the suction line of the respective suction device his. The evaluation unit can act as an alarm and / or shutdown device or be designed as a display device.

Die Erfindung wird nachfolgend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher beschrieben. In der Zeichnung zeigen:

Fig. 1
eine schematische Seitenansicht einer Vorrichtung zum Herstellen von verdichtetem Garn mit feststehendem Saugelement;
Fig. 2 und 3
zwei Ausführungsmöglichkeiten der erfindungsgemäßen Einrichtung zum Erfassen der Saugluftströmung für die Ausführungsform nach Fig. 1;
Fig. 4
eine andere Ausführungsmöglichkeit einer Vorrichtung zum Herstellen von verdichtetem Garn mit perforierter Saugwalze, in schematischer Seitenansicht;
Fig. 5 und 6
zwei verschiedene Ausführungsmöglichkeiten der Ausgestaltung der Einrichtung zum Erfassen der Saugluftströmung für die Ausführungsform nach Fig. 4.
The invention is described below with reference to exemplary embodiments shown in the drawing. The drawing shows:
Fig. 1
is a schematic side view of a device for producing compressed yarn with a fixed suction element;
2 and 3
two possible embodiments of the device according to the invention for detecting the suction air flow for the embodiment according to FIG. 1;
Fig. 4
another possible embodiment of a device for producing compressed yarn with a perforated suction roll, in a schematic side view;
5 and 6
two different possible embodiments of the configuration of the device for detecting the suction air flow for the embodiment according to FIG. 4.

Die in Fig. 1 in Seitenansicht schematisch dargestellte Vorrichtung zum Herstellen von verdichtetem Garn aus einer Faserlunte 1 weist z.B. ein erstes Walzenpaar 2 und ein nachgeschaltetes zweites Walzenpaar 3 auf. Zwischen beiden Walzenpaaren 2 und 3 kann die Faserlunte 1 einen Vorverzug erfahren. Das Walzenpaar 3 kann hierbei mit Riemchen 4 und 5 ausgestattet sein, wobei das Oberriemchen 4 durch einen nicht näher dargestellten Riemchenkäfig gespannt und das Unterriemchen 5 über eine Abstützschiene 6 geführt sein kann. Diese Schiene 6 kann gleichzeitig zur Abstützung des Oberriemchens 4 dienen.The device for manufacturing shown schematically in Fig. 1 in side view of compressed yarn from a fiber sliver 1 has e.g. a first pair of rollers 2 and a downstream second pair of rollers 3. Between the two The fiber sliver 1 can experience a pre-delay in the roller pairs 2 and 3. The Roller pair 3 can be equipped with straps 4 and 5, which Upper apron 4 stretched by an apron cage, not shown and the lower strap 5 can be guided over a support rail 6. This Rail 6 can also serve to support the top strap 4.

Dem zweiten Walzenpaar 3 ist ein Ausgangswalzenpaar 8 nachgeschaltet. An dieses Ausgangswalzenpaar 8 schließt sich eine Faserbündelungszone 20 an, in welcher die aus dem Ausgangswalzenpaar 8 austretende fertig verzogene Faserlunte 1 quer zur Transportvorrichtung zusammengefasst wird.The second pair of rollers 3 is followed by an output pair of rollers 8. On this pair of output rollers 8 is followed by a fiber bundling zone 20, in which the finished warped fiber sliver emerging from the pair of exit rollers 8 1 is summarized transversely to the transport device.

Die Faserbündelungszone 20 weist eine Saugvorrichtung 12 mit perforiertem Riemchen 15 auf, welches um die Oberwalze 10' eines Lieferwalzenpaares 10 geführt ist. Die Perforierung dieses Riemchens 15 besteht aus einer Anzahl in Laufrichtung der Faserlunte 1 hintereinander liegender kleinen Öffnungen, z.B. neben- und/oder hintereinander.The fiber bundling zone 20 has a suction device 12 with a perforated one Straps 15, which around the top roller 10 'of a pair of delivery rollers 10th is led. The perforation of this strappy 15 consists of a number in Running direction of the fiber sliver 1 of small openings lying one behind the other, e.g. side by side and / or one after the other.

Das perforierte Riemchen 15 ist um einen Riemchenkäfig 16 geführt, welcher über eine Saugleitung 22 mit einer nicht näher dargestellten Saugeinheit in Verbindung steht. Mit Hilfe der Saugvorrichtung 12 wird damit eine Saugluftströmung S erzielt, welcher zur Verdichtung der Faserlunte 1 dient. Nach Verlassen des Lieferwalzenpaares 10 wird die so bearbeitete Faserlunte 1 durch eine nicht näher dargestellte Verdreheinrichtung verdreht, beispielsweise durch eine Ringspinneinrichtung.The perforated strap 15 is guided around a strap cage 16, which via a suction line 22 in connection with a suction unit, not shown stands. With the help of the suction device 12 is a suction air flow S achieved, which serves to compress the fiber sliver 1. After leaving of the delivery roller pair 10, the fiber sliver 1 thus processed is not replaced by a Twisted device shown in more detail rotated, for example by a ring spinning device.

Die Saugvorrichtung 12 ist erfmdungsgemäß nach Fig. 2 bzw. 3 mit einer Einrichtung 25 bzw. 25' zum Erfassen der Saugluftströmung S versehen. Diese Einrichtung 25 steht über eine Vergleichseinheit 30 mit einer Auswerteeinheit 40 in Verbindung. Hierbei kann die Vorrichtung 25 zum Erfassen der Saugluftströmung S nach Fig. 2 ein Messrohr 27 aufweisen, welches direkt in das Gehäuse des Riemchenkäfigs 16 führt, der Teil der Saugvorrichtung 12 ist. The suction device 12 is in accordance with the invention according to FIGS. 2 and 3 with a device 25 or 25 'for detecting the suction air flow S. This facility 25 is via a comparison unit 30 with an evaluation unit 40 in Connection. Here, the device 25 for detecting the suction air flow S have a measuring tube 27 according to FIG. 2, which directly into the housing of the strappy cage 16 leads, which is part of the suction device 12.

Bei der Ausführungsform Fig. 3 wird die Strömungsgeschwindigkeit der Luft mit einem nicht dargestellten, in der Strömungstechnik gebräuchlichen Messfühler, z. B. Hitzdrahtanemometer, gemessen.In the embodiment of Fig. 3, the flow velocity of the air becomes a sensor, not shown, used in flow technology, z. B. hot wire anemometer measured.

Mit Hilfe der Einrichtung 25 zum Erfassen der Saugluftströmung S wird dieser überwacht, wobei bei Unterschreiten eines Schwellenwertes eine Meldung abgegeben wird, welche ein Fehler- und/oder Abstellsignal auslöst. Dieser Schwellenwert kann einstellbar sein, beispielsweise im Bereich der Vergleichseinheit 30, um eine entsprechende Anpassung an die jeweilige Garnqualität der Faserlunte 1 vornehmen zu können. Die lediglich schematisch dargestellte Auswerteeinheit 40 kann als Alarm- und/oder Abstelleinrichtung oder als Anzeigevorrichtung ausgebildet sein.With the aid of the device 25 for detecting the suction air flow S, this becomes is monitored, and a message is issued if a threshold value is undershot which triggers an error and / or shutdown signal. This threshold can be adjustable, for example in the area of the comparison unit 30 to make an appropriate adjustment to the respective yarn quality of the fiber sliver 1 to be able to make. The evaluation unit shown only schematically 40 can be used as an alarm and / or shutdown device or as a display device be trained.

Mit Hilfe des Messrohres 27 und nicht dargestellter Messfühler können der Gesamtdruck, der statische Druck und/oder der Staudruck oder die Strömungsgeschwindigkeit der Luft gemessen werden.With the help of the measuring tube 27 and the sensor (not shown), the total pressure, the static pressure and / or the dynamic pressure or the flow velocity measured in the air.

Die Ausführungsform einer Vorrichtung zum Herstellen von verdichteten Garnen nach Fig. 4 unterscheidet sich von jener nach Fig. 1 dadurch, dass bei der zweiten Ausführungsform als Saugvorrichtung 12' eine perforierte Saugwalze eingesetzt wird, welche rotiert. Diese rotierende, perforierte Saugwalze arbeitet mit zwei Gegenwalzen 13 und 14 zusammen, um die verzogene Faserlunte 1 mittels Saugluftströmung zu verdichten. Wiederum sind ein erstes Walzenpaar 2, ein zweites Walzenpaar 3 sowie ein Ausgangswalzenpaar 8 vorgesehen.The embodiment of a device for producing compressed yarns 4 differs from that of FIG. 1 in that in the second Embodiment used as a suction device 12 'a perforated suction roller which is rotating. This rotating, perforated suction roll works with two Counter rolls 13 and 14 together to form the warped fiber sliver 1 To compress suction air flow. Again, a first pair of rollers 2, 1 second pair of rollers 3 and a pair of output rollers 8 are provided.

Analog den Ausführungsformen nach Fig. 2 und 3 besteht bei den Darstellungen nach Fig. 5 und 6 die Möglichkeit, dass ein Messrohr 27 direkt mit dem Saugelement innerhalb der perforierten Saugwalze, welche als Saugvorrichtung 12 dient, verbunden ist (Fig. 5). Nach Fig. 6 wird die Strömungsgeschwindigkeit der Luft mit einem nicht dargestellten, in der Strömungsmesstechnik gebräuchlichen Messfühler, z. B. Hitzedrahtanemometer, gemessen.Analogous to the embodiments according to FIGS. 2 and 3 in the representations 5 and 6, the possibility that a measuring tube 27 directly with the suction element inside the perforated suction roll, which serves as a suction device 12 serves, is connected (Fig. 5). 6, the flow rate of the Air with a not shown, common in flow measurement technology Sensors, e.g. B. hot wire anemometer measured.

Auch bei dieser Ausführungsform nach Fig. 4 und 5 bzw. 4 und 6 wird die Saugluftströmung überwacht, wobei bei Unterschreiten eines Schwellenwertes über die Vergleichseinheit 30 und die Auswerteeinheit 40 eine Meldung abgegeben wird, welche ein Fehler- und/oder Abstellsignal auslöst. Auch hier ist der Schwellenwert einstellbar, wobei an jeder Saugstelle der Gesamtdruck, der statische Druck oder der Staudruck gemessen wird.In this embodiment according to FIGS. 4 and 5 or 4 and 6, the Suction air flow monitored, when falling below a threshold issued a message via the comparison unit 30 and the evaluation unit 40 which triggers an error and / or shutdown signal. Here too is the Threshold value adjustable, with the total pressure, the static, at each suction point Pressure or the dynamic pressure is measured.

Die Auswerteeinheit 40 kann als Alarm- und/oder Abstelleinrichtung oder als Anzeigevorrichtung ausgebildet sein.The evaluation unit 40 can be used as an alarm and / or shutdown device or as Display device may be formed.

Insgesamt ergibt sich durch die vorliegende Erfindung, dass auf einfache Weise die Saugluftströmung überwacht wird, um in jedem Fall die Garnqualität sicherzustellen.Overall, the present invention shows that in a simple manner the suction air flow is monitored to ensure the yarn quality in every case.

Claims (8)

  1. Method for the production of condensed yarn, in which, after the drawing of a fibre slubbing (1), the latter is condensed by means of a suction-air flow (S) and is subsequently twisted, characterized in that the suction-air flow is monitored at at least one suction point, for example, via the static pressure, the dynamic pressure or the flow velocity of the air, and, in the event of the undershooting of a threshold value, a message is transmitted which triggers a fault and/or stop signal.
  2. Method according to Claim 1, characterized in that the suction-air flow is monitored in the suction-side discharge line of a condensing device, and the message is transmitted in the event of an over-coincidental deviation from a desired value.
  3. Method according to Claim 1 or 2, in which the suction-air flow (S) is generated at a plurality of suction points, characterized in that the air throughput of the suction-air flow (S) is monitored at each suction point.
  4. Method according to Claims 1, 2 or 3, characterized in that the threshold value is adjustable.
  5. Device for the production of condensed yarn, with at least one drawframe (2, 3, 8, 10) for drawing the fibre stubbing (1), with at least one suction device (12, 12') for condensing the fibre slubbing (1) by means of a suction-air flow (S), and with at least one twisting device, characterized in that at least one of the suction devices (12, 12') is provided with a means (25) for detecting the suction-air flow (S), for example, via the static pressure, the suction pressure or the flow velocity of the air, the said means being connected via a comparison unit (30) to an evaluation unit (40) which is designed as an alarm and/or stop means or as an indicator device.
  6. Device according to Claim 5, characterized in that the means (25) for detecting the suction-air flow (S) is arranged in the suction line (22) of the respective suction device (12, 12').
  7. Device according to Claim 5 or 6, characterized in that the evaluation unit (40) is designed as an alarm means and/or as a stop means.
  8. Device according to Claim 7, characterized in that the evaluation unit (40) is designed as an indicator device.
EP99121016A 1998-12-04 1999-10-21 Method and device for manufacturing condensed yarn Expired - Lifetime EP1006224B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19856121A DE19856121C2 (en) 1998-12-04 1998-12-04 Method and device for the production of compacted yarn
DE19856121 1998-12-04

Publications (4)

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EP1006224A2 EP1006224A2 (en) 2000-06-07
EP1006224A3 EP1006224A3 (en) 2000-11-15
EP1006224B1 true EP1006224B1 (en) 2003-07-09
EP1006224B2 EP1006224B2 (en) 2005-11-30

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EP99121016A Expired - Lifetime EP1006224B2 (en) 1998-12-04 1999-10-21 Method and device for manufacturing condensed yarn

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US (1) US6134872A (en)
EP (1) EP1006224B2 (en)
JP (1) JP2000170043A (en)
DE (2) DE19856121C2 (en)

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DE3927739A1 (en) * 1989-08-23 1991-02-28 Fritz Stahlecker METHOD AND DEVICE FOR WRAPPING SPIN
US5243813A (en) * 1989-10-04 1993-09-14 Fritz Stahlecker Process and an arrangement for false-twist spinning
US5228281A (en) * 1989-11-04 1993-07-20 Fritz Stahlecker Arrangement and method for false-twist spinning
DE4004045A1 (en) * 1990-02-10 1991-08-14 Fritz Stahlecker DEVICE FOR PNEUMATIC SPIRAL SPINNING
DE4323427C2 (en) * 1993-07-13 1996-08-29 Henkel Ecolab Gmbh & Co Ohg Car wash and water management process
DE4323472C2 (en) † 1993-07-14 1997-08-07 Inst F Textil Und Verfahrenste Double apron drafting system
DE19838762B4 (en) * 1998-08-26 2009-04-16 Maschinenfabrik Rieter Ag Spinning machine with a variety of spinning stations

Also Published As

Publication number Publication date
EP1006224A3 (en) 2000-11-15
EP1006224B2 (en) 2005-11-30
DE59906252D1 (en) 2003-08-14
EP1006224A2 (en) 2000-06-07
DE19856121C2 (en) 2003-12-18
DE19856121A1 (en) 2000-06-08
JP2000170043A (en) 2000-06-20
US6134872A (en) 2000-10-24

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