EP1521870B2 - Device for guiding, treating, or conveying at least one thread - Google Patents

Device for guiding, treating, or conveying at least one thread Download PDF

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Publication number
EP1521870B2
EP1521870B2 EP03738025.0A EP03738025A EP1521870B2 EP 1521870 B2 EP1521870 B2 EP 1521870B2 EP 03738025 A EP03738025 A EP 03738025A EP 1521870 B2 EP1521870 B2 EP 1521870B2
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EP
European Patent Office
Prior art keywords
roll
asynchronous motor
companion
delivery
motor
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Application number
EP03738025.0A
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German (de)
French (fr)
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EP1521870B1 (en
EP1521870A1 (en
Inventor
Michael SCHRÖTER
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Oerlikon Textile GmbH and Co KG
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Oerlikon Textile GmbH and Co KG
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/30—Devices controlling the forwarding speed to synchronise with supply, treatment, or take-up apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
    • B65H59/388—Regulating forwarding speed
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a device for guiding, treating or conveying at least one thread according to the preamble of claim 1.
  • the delivery roller and the auxiliary role are each driven by an electric motor designed as a synchronous motor.
  • the electric motors are controlled by a control unit by a target frequency to drive each of the delivery and the Beilaufrolle with the same peripheral speed.
  • the design of the drives is based on the fact that in order to maintain as constant a thread speed as possible, the peripheral speed of the delivery roller and the peripheral speed of the auxiliary roller must be kept constant. In practice, however, even slight inaccuracies in the mantle of the delivery roll or in the mantle of the loose roll lead to deviations in the jacket diameters, which has an immediate effect on a change in the peripheral speeds. This effect causes the thread at the circumference of the axler be either braked or fed with a flow. However, such interactions lead to a troubled threadline, which has a negative effect especially in the leadership of several parallel running parallel threads.
  • the invention is therefore based on the object, a device of the type mentioned in such a way that the thread can be performed at the periphery of the supply roll and on the circumference of the Beilaufrolle at a substantially constant speed.
  • the electric motor of the by-pass roller is designed as an asynchronous motor which is controlled by a nominal frequency and which has a motor slip.
  • the invention has the particular advantage that the fan-out roller can be operated at a speed which is based on the actual peripheral speed of the delivery roller.
  • the electric motor of the delivery roller is also designed as an asynchronous motor, which, however, has a control feedback.
  • the sensor is supplied with a sensor which serves to measure an actual frequency. Via a signal line, the actual frequency is supplied to the control unit, in which a correction of the desired frequency takes place. Since both the asynchronous motor of the delivery roller and the asynchronous motor of the by-pass roller are controlled by the reference frequency of the control unit, the change in the nominal frequency is also abandoned analogously to the asynchronous motor of the supplementary role.
  • This has the particular advantage that, when loaded, the asynchronous motors can be operated with a tendency to have the same field orientation, so that the flywheel has a supporting effect on the delivery roller in order to apply a total traction.
  • the asynchronous motor of the by-pass roller is designed to be as electrically soft as possible, ie. H. the asynchronous motor of the auxiliary role has a relatively large engine slippage.
  • the asynchronous motor of the delivery roller is executed with the lowest possible engine slip.
  • the supply roll and the auxiliary roll can have a substantially equal coat diameter.
  • the by-pass roller is formed with a much smaller sheath diameter.
  • the asynchronous motor of the Beilaufrolle is designed with a smaller number of pole pairs to convert the target frequency in a corresponding peripheral speed.
  • the delivery roller and / or the accompanying roller have at least one diameter step.
  • This embodiment is particularly advantageous, for example, to carry out a swirling of the thread within a preferably last looping of the thread between the delivery roller and the loose roll.
  • the supply roll and / or the auxiliary roll could have at least one conical jacket region.
  • the supply roll is preferably made with a heating means, so that the jacket of the supply roll has a temperature required for the treatment of the yarn.
  • the setting has proved successful, in which the peripheral speed of the The idler pulley of the asynchronous motor is 0.1 - 10% above the peripheral speed of the delivery roller.
  • the peripheral speed of the The idler pulley of the asynchronous motor is 0.1 - 10% above the peripheral speed of the delivery roller.
  • Fig. 1 schematically a view of a first embodiment of the device according to the invention is shown.
  • the device has a delivery roller 2 and an enclosed at a distance from the delivery roller 2 arranged Beilaufrolle 3.
  • the delivery roller 2 is rotatably mounted projecting on a support 4.1 and connected by a drive shaft 5 with an electric motor 7.
  • the electric motor 7 of the delivery roller 2 is designed as an asynchronous motor.
  • the asynchronous motor 7 is coupled to the control unit 10 via the control line 9.1.
  • a sensor 11 for detecting an actual frequency of the asynchronous motor 7 is provided at the asynchronous motor 7 is provided.
  • the sensor 11 is connected by the signal line 12 to the controller 10.
  • the Beilaufrolle 3 is cantilevered on the support 4.2 and is driven by the electric motor 8 via the drive shaft 6.
  • the electric motor 8 of the auxiliary role 3 is designed as an asynchronous motor.
  • the asynchronous motor 8 is connected via the control line 9.2 with the control unit 10.
  • Fig. 1 If the device according to the invention is shown in an operating state. In this case, a thread 1 is guided in several wraps on the supply roller 2 and the Beilaufrolle 3. In this embodiment, only one thread is shown. However, the device according to the invention is preferably used to guide a plurality of parallel threads 1. For example, to draw the yarn from a spinneret or to draw in a draw zone, the supply roll 2 and the follower roll 3 are driven at substantially the same peripheral speed. For this purpose, the asynchronous motor 7 of the delivery roller 2 is controlled by the control unit 10 with a predetermined desired frequency.
  • the actual frequency is detected by the sensor 11 with the asynchronous motor 7 of the delivery roller and fed to the control unit 10 through the signal line 12.
  • the delivery roller 2 is driven at a predetermined target speed, which is independent of the engine slip of the induction motor 7 ..
  • the drive of the Beilaufrolle 3 by the induction motor 8 is carried out with identical nominal frequency, which is given by the control unit 10 via the control line 9.2 the induction motor 8.
  • the asynchronous motor 8 has compared to the asynchronous motor 7 of the delivery roller a smaller number of pole pairs, which is selected according to the diameter ratios of the sheath diameter of the delivery roller 2 and the sheath diameter of the Beilaufrolle 3.
  • the asynchronous motor 8 of the fan-out roller 3 is particularly electrically soft and thus has a relatively high engine slippage.
  • the actual peripheral speed of the flywheel 3 adapts to the respective load state, so that no undesired interactions are produced on the thread 1 between the delivery roller 2 and the slip roller 3.
  • the uncontrolled peripheral speed of the by-pass roller 3 thus substantially equals the regulated peripheral speed of the delivery roller 2.
  • Fig. 2 is another example of such a device shown schematically.
  • the example in Fig. 2 is substantially identical to the previous embodiment according to Fig. 1 , so that reference is made to the preceding description and only the differences are shown below.
  • the components with the same function have been given identical reference numerals.
  • asynchronous motor 7 of the supply roller 2 and the asynchronous motor 8 of the fly-by roller 3 are formed identically, since the supply roller 2 and the Beilaufrolle 3 have a same size shell diameter.
  • the control of the asynchronous motor 7 for driving the supply roller 2 and the control of the asynchronous motor 8 of the auxiliary pulley 3 is identical to the previous embodiment.
  • Each of the asynchronous motors 7 and 8 are controlled with a set by the control unit 10 target frequency, wherein the target frequency in the control unit 10 according to the actual frequency of the induction motor 7 of the delivery roller 2 is determined and specified.
  • the supply roller 2 in the example after Fig. 2 executed with a diameter level 13.
  • the axler 3 does not contain a diameter step.
  • a differential speed which leads to a thread tension relief in the thread 1.
  • This can be used, for example, advantageously to swirl the thread 1 between the delivery roller 2 and the Beilaufrolle 3.
  • Fig. 2 a Verwirbelungsdüse 14 shown in dashed lines.

Description

Die Erfindung betrifft eine Vorrichtung zum Führen, Behandeln oder Fördern von zumindest einem Faden gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for guiding, treating or conveying at least one thread according to the preamble of claim 1.

Es ist bekannt, dass zur Führung und Förderung eines Fadens beispielsweise in einem Spinnprozeß derartige Vorrichtungen eingesetzt werden, die aus einer Lieferrolle und einer der Lieferrolle zugeordnete Beilaufrolle bestehen, um eine Mehrfachumschlingung des Fadens zu ermöglichen. Hierbei ist die Lieferrolle angetrieben, die Beilaufrolle kann mit oder ohne einen Antrieb ausgeführt sein, wie beispielsweise in der EP 1 001 521 A2 beschrieben.It is known that for guiding and advancing a thread, for example in a spinning process, such devices are used, which consist of a delivery roll and a delivery roll associated with the take-up roll in order to allow multiple wrapping of the thread. In this case, the delivery roller is driven, the Beilaufrolle can be designed with or without a drive, such as in the EP 1 001 521 A2 described.

Aus der EP 1 001 521 A2 ist bekannt, dass die Lieferrolle und die Beilaufrolle jeweils durch eine als Synchronmotor ausgebildeten Elektromotor angetrieben werden. Dabei werden die Elektromotoren mittels einem Steuergerät durch eine Sollfrequenz gesteuert, um jeweils die Lieferrolle und die Beilaufrolle mit gleicher Umfangsgeschwindigkeit anzutreiben. Die Auslegung der Antriebe basiert darauf, dass zur Einhaltung einer möglichst konstanten Fadengeschwindigkeit die Umfangsgeschwindigkeit der Lieferrolle und die Umfangsgeschwindigkeit der Beilaufrolle konstant gehalten werden müssen. In der Praxis führen aber schon geringe Ungenauigkeiten im Mantel der Lieferrolle oder im Mantel der Beilaufrolle zu Abweichungen in dem Manteldurchmessern, die sich unmittelbar in eine Veränderung der Umfangsgeschwindigkeiten auswirkt. Dieser Effekt führt dazu, dass der Faden am Umfang der Beilaufrolle entweder abgebremst oder mit einem Vorlauf geführt wird. Derartige Wechselwirkungen führen jedoch zu einem unruhigen Fadenlauf, was sich insbesondere bei der Führung von mehreren parallel nebeneinander laufenden Fäden negativ auswirkt.From the EP 1 001 521 A2 It is known that the delivery roller and the auxiliary role are each driven by an electric motor designed as a synchronous motor. In this case, the electric motors are controlled by a control unit by a target frequency to drive each of the delivery and the Beilaufrolle with the same peripheral speed. The design of the drives is based on the fact that in order to maintain as constant a thread speed as possible, the peripheral speed of the delivery roller and the peripheral speed of the auxiliary roller must be kept constant. In practice, however, even slight inaccuracies in the mantle of the delivery roll or in the mantle of the loose roll lead to deviations in the jacket diameters, which has an immediate effect on a change in the peripheral speeds. This effect causes the thread at the circumference of the axler be either braked or fed with a flow. However, such interactions lead to a troubled threadline, which has a negative effect especially in the leadership of several parallel running parallel threads.

Der Erfindung liegt demnach die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art derart auszubilden, dass der Faden am Umfang der Lieferrolle und am Umfang der Beilaufrolle mit im wesentlichen konstanter Geschwindigkeit geführt werden kann.The invention is therefore based on the object, a device of the type mentioned in such a way that the thread can be performed at the periphery of the supply roll and on the circumference of the Beilaufrolle at a substantially constant speed.

Diese Aufgabe wird erfindungsgemäß so gelöst, dass der Elektromotor der Beilaufrolle als ein Asynchronmotor ausgebildet ist, welcher durch eine Sollfrequenz gesteuert ist und welcher einen Motorschlupf aufweist. Die Erfindung besitzt den besonderen Vorteil, dass die Beilaufrolle mit einer Drehzahl betrieben werden kann, welche sich an der tatsächlichen Umfangsgeschwindigkeit der Lieferrolle orientiert. Durch die Steuerung des Asynchronmotors der Beilaufrolle ohne jeglicher Regelrückführung wird erreicht, dass durch den lastabhängigen Motorschlupf des Asynchronmotors am Umfang der Beilaufrolle sich eine Umfangsgeschwindigkeit einstellt, die im wesentlichen durch die Geschwindigkeit des Fadens und damit der Umfangsgeschwindigkeit der Lieferrolle bestimmt ist.This object is achieved in accordance with the invention such that the electric motor of the by-pass roller is designed as an asynchronous motor which is controlled by a nominal frequency and which has a motor slip. The invention has the particular advantage that the fan-out roller can be operated at a speed which is based on the actual peripheral speed of the delivery roller. By controlling the asynchronous motor of the Beilaufrolle without any rule feedback is achieved that adjusts by the load-dependent engine slip of the induction motor on the circumference of the Beilaufrolle a peripheral speed, which is determined essentially by the speed of the thread and thus the peripheral speed of the delivery role.

Dabei ist der Elektromotor der Lieferrolle ebenfalls als ein Asynchronmotor ausgebildet, welcher jedoch über eine Regelrückführung verfügt. Hierzu ist dem Asynchronmotor der Lieferrolle ein Sensor beigefügt, der zur Messung einer Istfrequenz dient. Über eine Signalleitung wird die Istfrequenz dem Steuergerät zugeführt, in welchem eine Korrektur der Soll-Frequenz erfolgt. Da sowohl der Asynchronmotor der Lieferrolle als auch der Asynchronmotor der Beilaufrolle durch die Sollfrequenz des Steuergerätes gesteuert werden, wird die Veränderung der Sollfrequenz analog auch den Asynchronmotor der Beilaufrolle aufgegeben. Dies hat den besonderen Vorteil, dass bei Belastung die Asynchronmotoren mit tendenziell gleicher Feldorientierung betrieben werden könne, so dass die Beilaufrolle unterstützend zu der Lieferrolle wirkt, um eine Gesamtzugkraft aufzubringen.In this case, the electric motor of the delivery roller is also designed as an asynchronous motor, which, however, has a control feedback. For this purpose, the sensor is supplied with a sensor which serves to measure an actual frequency. Via a signal line, the actual frequency is supplied to the control unit, in which a correction of the desired frequency takes place. Since both the asynchronous motor of the delivery roller and the asynchronous motor of the by-pass roller are controlled by the reference frequency of the control unit, the change in the nominal frequency is also abandoned analogously to the asynchronous motor of the supplementary role. This has the particular advantage that, when loaded, the asynchronous motors can be operated with a tendency to have the same field orientation, so that the flywheel has a supporting effect on the delivery roller in order to apply a total traction.

Um eine möglichst hohe Anpassung der Umfangsgeschwindigkeiten zu erhalten, wird gemäß der Erfindung der Asynchronmotor der Beilaufrolle möglichst elektrisch weich ausgelegt, d. h. der Asynchronmotor der Beilaufrolle weist einen relativ großen Motorschlupf auf. Demgegenüber wird der Asynchronmotor der Lieferrolle mit möglichst geringem Motorschlupf ausgeführt.In order to obtain the highest possible adaptation of the peripheral speeds, according to the invention, the asynchronous motor of the by-pass roller is designed to be as electrically soft as possible, ie. H. the asynchronous motor of the auxiliary role has a relatively large engine slippage. In contrast, the asynchronous motor of the delivery roller is executed with the lowest possible engine slip.

Die Lieferrolle und die Beilaufrolle können einen im wesentlichen gleich großen Manteldurchmesser aufweisen. Bevorzugt wird die Beilaufrolle jedoch mit einem wesentlich kleineren Manteldurchmesser ausgebildet. Hierzu ist der Asynchronmotor der Beilaufrolle mit einer geringeren Anzahl von Polpaaren ausgeführt, um die Sollfrequenz in eine entsprechende Umfangsgeschwindigkeit umzusetzen. Durch Einhaltung einer Beziehung, bei welcher das Durchmesserverhältnis von Lieferrolle zu Beilaufrolle gleich dem Polpaarverhältnis von Asynchronmotor der Lieferrolle zum Asynchronmotor der Beilaufrolle ist, können beliebige Durchmesserdifferenzen in der Lieferrolle und der Beilaufrolle ausgebildet sein.The supply roll and the auxiliary roll can have a substantially equal coat diameter. Preferably, however, the by-pass roller is formed with a much smaller sheath diameter. For this purpose, the asynchronous motor of the Beilaufrolle is designed with a smaller number of pole pairs to convert the target frequency in a corresponding peripheral speed. By maintaining a relationship in which the diameter ratio of the supply roller to the auxiliary pulley is equal to the pole pair ratio of the asynchronous motor of the supply pulley to the asynchronous motor of the pulley, arbitrary diameter differences can be formed in the supply pulley and the pulley.

Es besteht jedoch auch die Möglichkeit, bewusst Fadenspannungsänderungen in den Umschlingungen des Fadens zwischen der Lieferrolle und der Beilaufrolle einzustellen. Hierzu weist die Lieferrolle und / oder die Beilaufrolle zumindest eine Durchmesserstufe auf. Diese Ausbildung ist besonders vorteilhaft, um beispielsweise eine Verwirbelung des Fadens innerhalb einer bevorzugt letzten Umschlingung des Fadens zwischen der Lieferrolle und der Beilaufrolle vorzunehmen.However, it is also possible to consciously adjust thread tension changes in the wraps of the thread between the supply roll and the auxiliary roll. For this purpose, the delivery roller and / or the accompanying roller have at least one diameter step. This embodiment is particularly advantageous, for example, to carry out a swirling of the thread within a preferably last looping of the thread between the delivery roller and the loose roll.

Um eine stetige Veränderung der Fadenspannung zu erhalten, könne die Lieferrolle und / oder die Beilaufrolle zumindest einen konischen Mantelbereich aufweisen.In order to obtain a continuous change in the thread tension, the supply roll and / or the auxiliary roll could have at least one conical jacket region.

Zur Erwärmung des Fadens wird bevorzugt die Lieferrolle mit einem Heizmittel ausgeführt, so dass der Mantel der Lieferrolle eine zur Behandlung des Fadens erforderliche Temperatur aufweist.For heating the yarn, the supply roll is preferably made with a heating means, so that the jacket of the supply roll has a temperature required for the treatment of the yarn.

Um den Schlupf des Asynchronmotors der Beilaufrolle besser auszunutzen, hat sich die Einstellung bewährt, bei welcher die Umfangsgeschwindigkeit der Beilaufrolle im Leerlauf des Asynchronmotors um 0,1 - 10 % oberhalb der Umfangsgeschwindigkeit der Lieferrolle liegt. Dadurch kann vorteilhaft ein Bremseffekt der Fäden an der Beilaufrolle genutzt werden.In order to make better use of the slip of the asynchronous motor of the auxiliary pulley, the setting has proved successful, in which the peripheral speed of the The idler pulley of the asynchronous motor is 0.1 - 10% above the peripheral speed of the delivery roller. As a result, it is advantageous to use a braking effect of the threads on the auxiliary roll.

Weitere Vorteile der Erfindung sind im folgenden anhand eines Ausführungsbeispiels einer erfindungsgemäßen Vorrichtung unter Hinweis auf die beigefügten Zeichnungen näher beschrieben.Further advantages of the invention are described below with reference to an embodiment of a device according to the invention with reference to the accompanying drawings.

Es stellen dar:

Fig. 1
schematisch ein erstes Ausführungsbeispiel der erfindungsgemäßen Vorrichtung
Fig. 2
schematisch ein weiteres Beispiel einer solchen Vorrichtung
They show:
Fig. 1
schematically a first embodiment of the device according to the invention
Fig. 2
schematically another example of such a device

In Fig. 1 ist schematisch eine Ansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung dargestellt. Die Vorrichtung weist eine Lieferrolle 2 und eine im Abstand zu der Lieferrolle 2 verschränkt angeordnete Beilaufrolle 3 auf. Die Lieferrolle 2 ist an einem Träger 4.1 auskragend drehbar gelagert und durch eine Antriebswelle 5 mit einem Elektromotor 7 verbunden. Der Elektromotor 7 der Lieferrolle 2 ist als ein Asynchronmotor ausgeführt. Der Asynchronmotor 7 ist über die Steuerleitung 9.1 mit dem Steuergerät 10 gekoppelt. An dem Asynchronmotor 7 der Lieferrolle 2 ist ein Sensor 11 zur Erfassung einer Istfrequenz des Asynchronmotors 7 vorgesehen. Der Sensor 11 ist durch die Signalleitung 12 mit dem Steuergerät 10 verbunden.In Fig. 1 schematically a view of a first embodiment of the device according to the invention is shown. The device has a delivery roller 2 and an enclosed at a distance from the delivery roller 2 arranged Beilaufrolle 3. The delivery roller 2 is rotatably mounted projecting on a support 4.1 and connected by a drive shaft 5 with an electric motor 7. The electric motor 7 of the delivery roller 2 is designed as an asynchronous motor. The asynchronous motor 7 is coupled to the control unit 10 via the control line 9.1. At the asynchronous motor 7 of the delivery roller 2, a sensor 11 for detecting an actual frequency of the asynchronous motor 7 is provided. The sensor 11 is connected by the signal line 12 to the controller 10.

Die Beilaufrolle 3 ist an dem Träger 4.2 auskragend gelagert und wird über die Antriebswelle 6 von dem Elektromotor 8 angetrieben. Der Elektromotor 8 der Beilaufrolle 3 ist als Asynchronmotor ausgeführt. Der Asynchronmotor 8 ist über die Steuerleitung 9.2 mit dem Steuergerät 10 verbunden.The Beilaufrolle 3 is cantilevered on the support 4.2 and is driven by the electric motor 8 via the drive shaft 6. The electric motor 8 of the auxiliary role 3 is designed as an asynchronous motor. The asynchronous motor 8 is connected via the control line 9.2 with the control unit 10.

In Fig. 1 ist die erfindungsgemäße Vorrichtung in einem Betriebszustand gezeigt. Hierbei wird ein Faden 1 in mehrere Umschlingungen über die Lieferrolle 2 und die Beilaufrolle 3 geführt. In diesem Ausführungsbeispiel ist nur ein Faden dargestellt. Die erfindungsgemäße Vorrichtung wird jedoch bevorzugt eingesetzt, um mehrere parallel laufende Fäden 1 zu führen. Um den Faden beispielsweise von einer Spinndüse abzuziehen oder in einer Streckzone zu verstrecken, wird die Lieferrolle 2 und die Beilaufrolle 3 mit im wesentlichen gleicher Umfangsgeschwindigkeit angetrieben. Hierzu wird der Asynchronmotor 7 der Lieferrolle 2 durch das Steuergerät 10 mit einer vorgegebenen Soll-Frequenz gesteuert. Um an der Lieferrolle 2 eine Solldrehzahl zu erhalten, wird die Istfrequenz mit dem Asynchronmotor 7 der Lieferrolle durch den Sensor 11 erfasst und durch die Signalleitung 12 dem Steuergerät 10 zugeführt. Somit wird erreicht, dass die Lieferrolle 2 mit einer vorgegebenen Solldrehzahl angetrieben wird, die unabhängig von dem Motorschlupf des Asynchronmotors 7 ist..In Fig. 1 If the device according to the invention is shown in an operating state. In this case, a thread 1 is guided in several wraps on the supply roller 2 and the Beilaufrolle 3. In this embodiment, only one thread is shown. However, the device according to the invention is preferably used to guide a plurality of parallel threads 1. For example, to draw the yarn from a spinneret or to draw in a draw zone, the supply roll 2 and the follower roll 3 are driven at substantially the same peripheral speed. For this purpose, the asynchronous motor 7 of the delivery roller 2 is controlled by the control unit 10 with a predetermined desired frequency. In order to obtain a set speed at the delivery roller 2, the actual frequency is detected by the sensor 11 with the asynchronous motor 7 of the delivery roller and fed to the control unit 10 through the signal line 12. Thus, it is achieved that the delivery roller 2 is driven at a predetermined target speed, which is independent of the engine slip of the induction motor 7 ..

Der Antrieb der Beilaufrolle 3 durch den Asynchronmotor 8 erfolgt mit identischer Sollfrequenz, die durch das Steuergerät 10 über die Steuerleitung 9.2 dem Asynchronmotor 8 aufgegeben wird. Der Asynchronmotor 8 besitzt gegenüber dem Asynchronmotor 7 der Lieferrolle eine geringere Anzahl der Polpaare, die entsprechend der Durchmesserverhältnisse des Manteldurchmessers der Lieferrolle 2 und des Manteldurchmessers der Beilaufrolle 3 gewählt ist. Der Asynchronmotor 8 der Beilaufrolle 3 ist besonders elektrisch weich ausgebildet und weist somit einen relativ hohen Motorschlupf auf. Somit paßt sich die Ist-Umfangsgeschwindigkeit der Beilaufrolle 3 aufgrund des hohen Motorschlupfes des Asynchronmotors 8 dem jeweiligen Belastungszustand an, so dass keine unerwünschten Wechselwirkungen an dem Faden 1 zwischen der Lieferrolle 2 und der Beilaufrolle 3 erzeugt werden. Die ungeregelte Umfangsgeschwindigkeit der Beilaufrolle 3 gleicht sich somit im wesentlichen der geregelten Umfangsgeschwindigkeit der Lieferrolle 2 an.The drive of the Beilaufrolle 3 by the induction motor 8 is carried out with identical nominal frequency, which is given by the control unit 10 via the control line 9.2 the induction motor 8. The asynchronous motor 8 has compared to the asynchronous motor 7 of the delivery roller a smaller number of pole pairs, which is selected according to the diameter ratios of the sheath diameter of the delivery roller 2 and the sheath diameter of the Beilaufrolle 3. The asynchronous motor 8 of the fan-out roller 3 is particularly electrically soft and thus has a relatively high engine slippage. Thus, due to the high motor slip of the asynchronous motor 8, the actual peripheral speed of the flywheel 3 adapts to the respective load state, so that no undesired interactions are produced on the thread 1 between the delivery roller 2 and the slip roller 3. The uncontrolled peripheral speed of the by-pass roller 3 thus substantially equals the regulated peripheral speed of the delivery roller 2.

In Fig. 2 ist ein weiteres Beispiel einer solchen Vorrichtung schematisch dargestellt. Das Beispiel in Fig. 2 ist im wesentlichen identisch zu dem vorhergehenden Ausführungsbeispiel nach Fig. 1, so dass an dieser Stelle auf die vorangegangene Beschreibung Bezug genommen wird und nachfolgend nur die Unterschiede aufgezeigt werden. Dabei haben die Bauteile mit gleicher Funktion identische Bezugszeichen erhalten.In Fig. 2 is another example of such a device shown schematically. The example in Fig. 2 is substantially identical to the previous embodiment according to Fig. 1 , so that reference is made to the preceding description and only the differences are shown below. The components with the same function have been given identical reference numerals.

Zum Antrieb der Lieferrolle 2 und der Beilaufrolle 3 werden die als Asynchronmotoren ausgebildeten Elektromotoren 7 und 8 eingesetzt. Der Asynchronmotor 7 der Lieferrolle 2 und der Asynchronmotor 8 der Beilaufrolle 3 sind identisch ausgebildet, da die Lieferrolle 2 und die Beilaufrolle 3 einen gleich großen Manteldurchmesser aufweisen. Die Regelung des Asynchronmotors 7 zum Antreiben der Lieferrolle 2 und die Steuerung des Asynchronmotors 8 der Beilaufrolle 3 ist identisch zu dem vorhergehenden Ausführungsbeispiel. Jede der Asynchronmotoren 7 und 8 werden mit einer durch das Steuergerät 10 aufgegebenen Soll-Frequenz gesteuert, wobei die Sollfrequenz im Steuergerät 10 entsprechend der Istfrequenz des Asynchronmotors 7 der Lieferrolle 2 bestimmt und vorgegeben wird.To drive the delivery roller 2 and the Beilaufrolle 3 designed as asynchronous electric motors 7 and 8 are used. The asynchronous motor 7 of the supply roller 2 and the asynchronous motor 8 of the fly-by roller 3 are formed identically, since the supply roller 2 and the Beilaufrolle 3 have a same size shell diameter. The control of the asynchronous motor 7 for driving the supply roller 2 and the control of the asynchronous motor 8 of the auxiliary pulley 3 is identical to the previous embodiment. Each of the asynchronous motors 7 and 8 are controlled with a set by the control unit 10 target frequency, wherein the target frequency in the control unit 10 according to the actual frequency of the induction motor 7 of the delivery roller 2 is determined and specified.

Gegenüber dem vorhergehenden Ausführungsbeispiel ist die Lieferrolle 2 bei dem Beispiel nach Fig. 2 mit einer Durchmesserstufe 13 ausgeführt. Die Beilaufrolle 3 enthält keine Durchmesserstufe. Somit tritt in den letzten Umschlingungen des Fadens 1 zwischen der Lieferrolle 2 und der Beilaufrolle 3 im Übergang in der Durchmesserstufe 13 am Mantel der Lieferrolle 2 eine Differenzgeschwindigkeit auf, die zu einer Fadenspannungsentlastung im Faden 1 führt. Diese läßt sich beispielsweise vorteilhaft dazu verwenden, um den Faden 1 zwischen der Lieferrolle 2 und der Beilaufrolle 3 zu verwirbeln. Hierzu ist in Fig. 2 eine Verwirbelungsdüse 14 gestrichelt eingezeigt.Compared to the previous embodiment, the supply roller 2 in the example after Fig. 2 executed with a diameter level 13. The axler 3 does not contain a diameter step. Thus occurs in the last wraps of the thread 1 between the supply roller 2 and the Beilaufrolle 3 in the transition in the diameter stage 13 on the mantle of the delivery roller 2, a differential speed, which leads to a thread tension relief in the thread 1. This can be used, for example, advantageously to swirl the thread 1 between the delivery roller 2 and the Beilaufrolle 3. This is in Fig. 2 a Verwirbelungsdüse 14 shown in dashed lines.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Fadenthread
22
Lieferrolledelivery roll
33
Beilaufrollecompanion roll
4.1, 4.24.1, 4.2
Trägercarrier
55
Antriebswelle der LieferrolleDrive shaft of the delivery roller
66
Antriebswelle der BeilaufrolleDrive shaft of the by-pass roller
77
Elektromotor der LieferrolleElectric motor of delivery roll
88th
Elektromotor der BeilaufrolleElectric motor of the supplementary role
9.1, 9.29.1, 9.2
Steuerleitungcontrol line
1010
Steuergerätcontrol unit
1111
Sensorsensor
1212
Signalleitungsignal line
1313
DurchmesserstufeDiameter step
1414
Verwirbelungsdüseswirl jet

Claims (6)

  1. Device for guiding, treating, or advancing at least one yarn (1), comprising a delivery roll (2) and a companion roll (3) cooperating with the delivery roll (2), with the yarn (1) repeatedly looping the delivery roll (2) and the companion roll (3), comprising an electric motor (7) associated with the delivery roll (2), comprising a second electric motor (8) associated with the companion roll (3), and comprising a controller (10) that is connected by means of control lines (9.1, 9.2) to the electric motors (7, 8), and which controls the electric motors (7, 8) at a desired frequency, characterized in that the electric motor (8) of the companion roll (3) is designed as an asynchronous motor that is controlled by the desired frequency, and which has a motor slip, wherein the electric motor (7) of the delivery roll (2) is designed as an asynchronous motor, and wherein the asynchronous motor (7) of the delivery roll (2) includes a sensor (11) for measuring an actual frequency, which actual frequency is supplied via a signaling line (12) to the controller (10) for correcting the desired frequency, wherein the asynchronous motor (8) of the companion roll (3) has a substantially greater motor slip than the asynchronous motor (7) of the delivery roll (2), and wherein the asynchronous motor (8) of the companion roll (3) is controlled without any control feedback.
  2. Device of Claim 1, characterized in that the delivery roll (2) and the companion roll (3) have each a casing diameter, which permit defining a diameter ratio, and that the asynchronous motors (7, 8) have each a number of pole pairs, which permit defining a pole pair ratio, and that the ratio of the diameter of delivery roll (2) to the diameter of companion roll (3) equals the ratio of the pole pairs in the asynchronous motor (7) of the delivery roll (2) to the pole pairs in the asynchronous motor (8) of the companion roll (3).
  3. Device of either of Claims 1 and 2, characterized in that the delivery roll (2) and/or the companion roll (3) include at least one diametrical step (13) in the casing.
  4. Device of one of Claims 1-3, characterized in that the delivery roll (2) and/or the companion roll (3) include at least one conical section in the casing.
  5. Device of one of Claims 1-4, characterized in that the delivery roll (2) and/or the companion roll (3) include a heating means for heating the casing.
  6. Device of one of Claims 1-5, characterized in that the companion roll is preferably designed such that its circumferential speed in the noload operation of the asynchronous motor is 0.1-10% above the circumferential speed of the delivery roll.
EP03738025.0A 2002-06-19 2003-06-13 Device for guiding, treating, or conveying at least one thread Expired - Lifetime EP1521870B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10227290 2002-06-19
DE10227290A DE10227290A1 (en) 2002-06-19 2002-06-19 Device for guiding, treating and conveying at least one thread
PCT/EP2003/006231 WO2004001106A1 (en) 2002-06-19 2003-06-13 Device for guiding, treating, or conveying at least one thread

Publications (3)

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EP1521870A1 EP1521870A1 (en) 2005-04-13
EP1521870B1 EP1521870B1 (en) 2007-05-09
EP1521870B2 true EP1521870B2 (en) 2013-05-08

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EP (1) EP1521870B2 (en)
JP (1) JP4263691B2 (en)
CN (1) CN100359052C (en)
DE (2) DE10227290A1 (en)
WO (1) WO2004001106A1 (en)

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DE102005030280B3 (en) * 2005-06-29 2006-09-28 Aradex Ag Operating a continuous sheet-processing machine, e.g. a printing machine, using process variables determined by measuring changes in influencing variables caused by modulating drive speeds for processing elements
DE102005045496A1 (en) * 2005-09-23 2007-03-29 Saurer Gmbh & Co. Kg Apparatus for melt spinning and taking off synthetic thread, includes easily controlled drive for take-off and stretching reels based on electric motor and electric brake coordinated with respective reels
EP2463417B1 (en) * 2010-12-13 2013-07-10 Oerlikon Textile GmbH & Co. KG Godet unit
DE102011102560A1 (en) 2011-05-26 2012-11-29 Oerlikon Textile Gmbh & Co. Kg Apparatus for stripping and drawing a synthetic thread
DE102011109784A1 (en) 2011-08-08 2013-02-14 Oerlikon Textile Gmbh & Co. Kg Apparatus for melt spinning, stripping, stretching, relaxing and winding a synthetic thread
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Publication number Publication date
DE10227290A1 (en) 2004-01-08
DE50307248D1 (en) 2007-06-21
EP1521870B1 (en) 2007-05-09
US7226286B2 (en) 2007-06-05
CN100359052C (en) 2008-01-02
JP2005530057A (en) 2005-10-06
CN1662687A (en) 2005-08-31
WO2004001106A1 (en) 2003-12-31
EP1521870A1 (en) 2005-04-13
JP4263691B2 (en) 2009-05-13
US20050071968A1 (en) 2005-04-07

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