EP1048601A1 - Yarn winder - Google Patents

Yarn winder Download PDF

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Publication number
EP1048601A1
EP1048601A1 EP99113889A EP99113889A EP1048601A1 EP 1048601 A1 EP1048601 A1 EP 1048601A1 EP 99113889 A EP99113889 A EP 99113889A EP 99113889 A EP99113889 A EP 99113889A EP 1048601 A1 EP1048601 A1 EP 1048601A1
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EP
European Patent Office
Prior art keywords
sensor
thread guide
yarn guide
flanges
sleeve
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
EP99113889A
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German (de)
French (fr)
Other versions
EP1048601B1 (en
Inventor
Hermann Dr. Mettler
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SSM Schaerer Schweiter Mettler AG
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SSM Schaerer Schweiter Mettler AG
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Publication of EP1048601A1 publication Critical patent/EP1048601A1/en
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Publication of EP1048601B1 publication Critical patent/EP1048601B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2821—Traversing devices driven by belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2848—Arrangements for aligned winding
    • B65H54/2854—Detection or control of aligned winding or reversal
    • B65H54/2857—Reversal control
    • B65H54/286—Reversal control by detection that the material has reached the flange or the reel end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2884—Microprocessor-controlled traversing devices in so far the control is not special to one of the traversing devices of groups B65H54/2803 - B65H54/325 or group B65H54/38
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2551/00—Means for control to be used by operator; User interfaces
    • B65H2551/20—Display means; Information output means
    • B65H2551/22—Numerical displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/24—Inductive detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/25—Contact switches
    • 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 present invention relates to a device for winding a thread on a carrier, with an oscillating drivable thread guide, which has a lifting movement when winding along the axis of the beam.
  • Thread laying units or thread laying are known in many versions. So are, for example, with older thread laying the thread guides on a common push rod connected to a drive attached while the latest generation of thread laying, such as in EP-A-0 453 622 and EP-A-0 829 444, a direct drive each Have thread guide by an electric motor controlled according to a program.
  • the inner flank of the flanges is not straight but, for example, conical, as with the so-called Kingspools, which are sleeves with a conical flange on one side, then exist the problem, such as the end face of the wound thread material adjacent to the conical flange can be adapted to the shape of the flange.
  • the wound thread material is always relative to the tube occupies the same position.
  • the invention is now intended to provide a device of the type mentioned in the introduction, when used, the wound thread material occupies a defined position relative to the carrier, and where there is also the winding of sleeves with flanges on the latter there is no free space or accumulation of thread material.
  • the inventive solution to this problem is characterized in that with the thread guide coupled sensor means for measuring the length and position of the carrier relative are provided to a reference point of the thread guide, and that based on this measurement the stroke of the thread guide is positioned.
  • a first preferred embodiment of the device according to the invention is characterized in that that the thread guide is at least one complete before the actual winding process Performs stroke movement in which the measurement mentioned takes place.
  • a second preferred embodiment of the device according to the invention is characterized in that that the sensor means mentioned by a coupled with the thread guide Sensor or formed by the thread guide itself and connected to a controller, in which a clear assignment of the signals of the sensor means to the respective stroke position of the thread guide.
  • the thread guide moves along before the actual winding or production process begins the sleeve forming the carrier and determines the length and with the help of the sensor the position of the sleeve relative to the coordinate system forming the reference point for this measurement of the sensor.
  • the control an assignment between the sensor signals and the stroke position of the thread guide control, the stroke length and the position of the material to be wound up optimally adapt to the current sleeve dimensions on the sleeve. You can do this Call the step the initialization of the basic stroke.
  • any flange contour that may be present for example scanned at a king's pool.
  • a contour scan can for example, in that according to a further preferred embodiment the device according to the invention with a carrier having at least one flange the sensor means are formed by a mechanical sensor and the thread guide before Actual winding process at least two complete lifting movements in different Distances from the jacket of the wearer, and that in the controller from the sensor signals the contour of the at least one flange is calculated.
  • the initialization of the basic stroke can be expanded to a dynamic measurement by one starts the machine after initialization and the skewers at full speed drives and then carries out a calibration process. In this measurement it is taken into account that the sleeves are often on the skewer at higher speeds slip slightly and get into their final position.
  • a special sensor coupled to the thread guide e.g. can be an optical or inductive sensor
  • its signal during the calibration process continuously monitored.
  • a sudden change in the sensor signal is considered Transition interpreted from the sleeve's winding jacket to a flange. This in control clearly identifiable position is registered and clearly assigned to the sleeve.
  • At a complete lifting movement of the thread guide in both directions results in two coordinates, which indicate the length between the flanges.
  • this length is the basic stroke, which denotes the area in which winding can take place.
  • Corresponding winding laws for the laying speed and other parameters then related to this basic stroke in the control. If an optical or inductive sensor is used, it may be advantageous if the sleeves the inner edges of the flanges have clearly identifying and optically or inductively detectable markings.
  • the winding unit consists essentially of a motor-driven spindle 1 with a Positioning ring 2 for receiving and holding a flange sleeve 3, each with a flange 4 their end faces and from a thread laying 5.
  • a thread (not shown) obtained from a supply spool is wound into a winding body become.
  • the thread laying 5 contains a thread guide 6 as the most important element, which performs an oscillating traversing movement along the axis of the sleeve 3.
  • each tension member 7 is for driving of the thread guide 5 is provided in one of the two lifting directions.
  • the engine 10 is, for example a stepper motor.
  • the motor 10 is a sensor 12 for detecting the rotational position of the drive wheel 11 and thus the Traversing position of the thread guide 5 assigned.
  • the sensor 12 is preferably one of a kind Transmitting and receiving diode existing photoelectric sensor that detects the movement of a with the rotor of the motor 10 rigidly connected encoder disc (not shown).
  • the position of the rotor has a fixed transmission ratio to the position of the thread guide 6 on.
  • sensor 12 reference is made to EP-A-0 829 444 and to the corresponding one U.S. Application No. 08 / 931,607 referenced.
  • the motor 10 and the sensor 12 are with a Controller 13 connected, which controls the motor 10 on the one hand and the sensor on the other 12 constantly experiences the current rotor position. The controller 13 therefore knows at all times the current position of the thread guide 6.
  • the thread guide 6 is a sensor for the position of the inner flanks of the flanges 4 of the sleeve 3 assigned.
  • This sensor which is preferably mounted on the thread guide 6, is for example an optical, inductive or mechanical sensor, wherein when using an optical or inductive sensor on the sleeve 3 two the position of the inner flanks of the flanges 4 indicating markings can be provided.
  • the mechanical sensor is for example a probe tip coupled to the thread guide 6, preferably a probe tip connected to it 14, or the thread guide himself.
  • the thread guide 6 is without thread moved along the sleeve 3 and it is based on the signal from the sensor, the distance between the inner flanks of the flanges 4, the basic stroke, and the position of these inner flanks relative to Coordinate system of the thread guide 6 is determined.
  • the control "knows" at which positions of the drive wheel 11 the inner flanks of the flanges 4 lie and can calculate the length of the stroke of the thread guide 6 as well align this stroke relative to the flanges 4.
  • the corresponding to the inner flanks of the flanges 4 Thread guide positions are written in the buffer of the control 13 and subtracted from each other. The result is the free length between the flanges 4 and can be used for determining the stroke length and for the correct positioning of the thread laying 5 can be used.
  • You can also use this static determination of the basic stroke drive the spindles 1 with the sleeves 3 and then repeat the measuring process.
  • the system can compensate for any shifts caused by the rotation of the sleeves 3 on the spindles 1 and the alignment of the stroke on the sleeves accordingly correct.
  • the position of the flanges 4 is due a sudden change in the sensor signal is detected.
  • a mechanical Scanner probe tip 14 or thread guide 6
  • this is on the side Flange run up, which causes a change in the motor current of the drive motor. In all In such cases, the position of the flanges is clearly recognized.
  • this contour with a mechanical Scanners can be determined by using this (thread guide 6 possibly with probe tip 14) at least two measuring operations at different distances from the jacket of the sleeve 3 become.
  • the scanner is used on different Set the contour of the respective flange with different stroke positions of the thread guide 6 hit.
  • the controller 13 can from the coordinates of these impact points calculate the course of the contour. It is also possible to use the mechanical scanner to be designed so that it scans the sleeve geometry like a contour lathe.
  • the thread laying 5 and thus also the thread guide 6 at such a distance the spindle 1 is arranged so that the mechanical scanner does not touch the flanges 4, the distance between spindle 1 and thread laying is determined before the start of the measuring process 5 reduced so far that the scanner surely runs onto the flanges.
  • a thread guide is used for the measuring process mounted mechanical scanner, the difference in height between the sleeve surface and slip spindle detected when it runs over the sleeve edge.
  • optical detection can also of the sleeve edges.

Abstract

The bobbin winder assembly, with a reciprocating yarn guide (6), has a sensor coupled to the yarn guide to measure the lengt and position of the bobbin sleeve (3) in relation to a reference point of the yarn guide (6). According to the monitored measurement the stroke movement of the yarn guide (6) is positioned. Before bobbin winding starts, the yarn guide (6) is moved along at least one full stroke movement, for the measurements. Th sensor is a monitor (14) coupled to the yarn guide (6), or it is the yarn guide itself. It is connected to a control (13) where sensor signals are arranged unambiguously with each guide stroke movement. The sensor has an inductive or optical action, or is mechanical feeler (6,14). The bobbin sleeve (3) has at least one flange (4) to be detected by a mechanical feeler (6,14). Before winding starts, the yarn guide (6) is given at least two full stroke movements at different gaps from the sleeve mantle, for the contour of at least one flange (4) to be computed by the control (13). The yarn guide (6) is powered by a motor (10) to give the guide (6) an unambiguous stroke position in relation the rotary position of the rotor. The motor (10) is linked to the control ( The sensor registers the free length of the bobbin sleeve (3) between the inner flanks of the end flanges (4). With an inductive optical sensor, the position of the inner flanks of the sleeve flanges (4) is registered by an abrupt change in the signals. Wit mechanical feeler, (6,14) the location of the inner flanks of the bobbin flanges (4) is detected by a sudden increase in the mot (10) current.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Aufwickeln eines Fadens auf einen Träger, mit einem oszillierend antreibbaren Fadenführer, welcher beim Aufwickeln eine Hubbewegung entlang der Achse des Trägers ausführt.The present invention relates to a device for winding a thread on a carrier, with an oscillating drivable thread guide, which has a lifting movement when winding along the axis of the beam.

Vorrichtungen dieser Art, die als Fadenverlegeaggregate oder Fadenverlegungen bezeichnet werden, sind in vielen Ausführungen bekannt. So sind beispielsweise bei älteren Fadenverlegungen die Fadenführer auf einer gemeinsamen, an einen Antrieb angeschlossenen Schubstange befestigt, während Fadenverlegungen der jüngsten Generation, wie beispielsweise die in der EP-A-0 453 622 und in der EP-A-0 829 444 beschriebenen, einen direkten Antrieb jedes Fadenführers durch einen nach einem Programm gesteuerten Elektromotor aufweisen.Devices of this type, known as thread laying units or thread laying are known in many versions. So are, for example, with older thread laying the thread guides on a common push rod connected to a drive attached while the latest generation of thread laying, such as in EP-A-0 453 622 and EP-A-0 829 444, a direct drive each Have thread guide by an electric motor controlled according to a program.

Unabhängig von der Art des Antriebs des Fadenführers entstehen beim Bewickeln der Träger, insbesondere, wenn es sich bei diesen um Flanschhülsen mit ein- oder zweiseitigen Flanschen mit gerader, konischer oder gewölbter Innenflanke handelt, oft Probleme. Wenn nämlich die verwendeten Hülsen Toleranzen aufweisen, seien dies Toleranzen bezüglich des Abstands zwischen den Flanschen oder solche bezüglich der Lage der Hülsen auf ihrer Aufsteckspindel, müssen die Fadenführer an jeder Produktionsstelle einzeln auf die Position der Hülse eingestellt werden, was naturgemäss zeitaufwendig und kostspielig ist.Regardless of the type of drive of the thread guide, when winding the carrier, especially if these are flange sleeves with one- or two-sided flanges dealing with a straight, conical or curved inner flank, often problems. If the used Tolerances have sleeves, these are tolerances regarding the distance between the flanges or those relating to the position of the sleeves on their skewers, the thread guides must be individually adjusted to the position of the core at each production site become what is naturally time-consuming and expensive.

Diese Einstellung ist deswegen notwendig, damit zwischen Flansch und gespultem Fadenmaterial kein freier Raum entsteht, der das Abwickeln im nächsten Prozess behindern würde. Andererseits darf aber der Faden auch nicht zu nahe an die Flansche gewickelt werden, weil sich sonst eine Anhäufung von Fadenmaterial bildet, welche ebenfalls das Abwickeln bei der nächsten Prozesstufe behindern würde.This setting is therefore necessary between the flange and the wound thread material there is no free space that would hinder the unwinding in the next process. On the other hand however, the thread must not be wound too close to the flanges either because otherwise forms a pile of thread material, which also unwinds at the next one Process stage would hinder.

Wenn die Innenflanke der Flansche nicht gerade sondern beispielsweise konisch ist, wie bei den sogenannten Kingspools, das sind Hülsen mit einseitigem, konischem Flansch, dann besteht das Problem, wie die dem konischen Flansch benachbarte Stirnfläche des gespulten Fadenmaterials der Form des Flansches angepasst werden kann. Selbstverständlich ist es auch bei Hülsen ohne Flansche nützlich, wenn das gespulte Fadenmaterial relativ zur Hülse immer die gleiche Lage einnimmt. If the inner flank of the flanges is not straight but, for example, conical, as with the so-called Kingspools, which are sleeves with a conical flange on one side, then exist the problem, such as the end face of the wound thread material adjacent to the conical flange can be adapted to the shape of the flange. Of course it is useful for tubes without flanges if the wound thread material is always relative to the tube occupies the same position.

Durch die Erfindung soll nun eine Vorrichtung der eingangs genannten Art angegeben werden, bei deren Verwendung das gespulte Fadenmaterial eine definierte Lage relativ zum Träger einnimmt, und bei der es ausserdem beim Bewickeln von Hülsen mit Flanschen an den letzteren weder zu einem freien Raum noch zu Anhäufungen von Fadenmaterial kommt.The invention is now intended to provide a device of the type mentioned in the introduction, when used, the wound thread material occupies a defined position relative to the carrier, and where there is also the winding of sleeves with flanges on the latter there is no free space or accumulation of thread material.

Die erfindungsgemässe Lösung dieser Aufgabe ist dadurch gekennzeichnet, dass mit dem Fadenführer gekoppelte Sensormittel für die Messung der Länge und der Position des Trägers relativ zu einem Bezugspunkt des Fadenführers vorgesehen sind, und dass anhand dieser Messung eine Positionierung des Hubs des Fadenführers erfolgt.The inventive solution to this problem is characterized in that with the thread guide coupled sensor means for measuring the length and position of the carrier relative are provided to a reference point of the thread guide, and that based on this measurement the stroke of the thread guide is positioned.

Eine erste bevorzugte Ausführungsform der erfindungsgemässen Vorrichtung ist dadurch gekennzeichnet, dass der Fadenführer vor dem eigentlichen Wickelvorgang mindestens eine vollständige Hubbewegung ausführt, bei welcher die genannte Messung erfolgt.A first preferred embodiment of the device according to the invention is characterized in that that the thread guide is at least one complete before the actual winding process Performs stroke movement in which the measurement mentioned takes place.

Eine zweite bevorzugte Ausführungsform der erfindungsgemässen Vorrichtung ist dadurch gekennzeichnet, dass die genannten Sensormittel durch einen mit dem Fadenführer gekoppelten Sensor oder durch den Fadenführer selbst gebildet und an eine Steuerung angeschlossen sind, in welcher eine eindeutige Zuordnung der Signale der Sensormittel zur jeweiligen Hubposition des Fadenführers erfolgt.A second preferred embodiment of the device according to the invention is characterized in that that the sensor means mentioned by a coupled with the thread guide Sensor or formed by the thread guide itself and connected to a controller, in which a clear assignment of the signals of the sensor means to the respective stroke position of the thread guide.

Vor Beginn des eigentlichen Spul- oder Produktionsvorgangs bewegt sich der Fadenführer entlang der den Träger bildenden Hülse und bestimmt dabei mit Hilfe des Sensors die Länge und die Position der Hülse relativ zu dem den Bezugspunkt für diese Messung bildenden Koordinatensystem des Sensors. Man spricht in diesem Zusammenhang von Einmessen der Hülse. Da in der Steuerung eine Zuordnung zwischen den Sensorsignalen und der Hubposition des Fadenführers erfolgt, kann die Steuerung die Hublänge und die Position des aufzuwickelnden Materials auf der Hülse an die aktuellen Hülsendimensionen optimal anpassen. Man kann diesen Schritt als Initialisierung des Grundhubs bezeichnen.The thread guide moves along before the actual winding or production process begins the sleeve forming the carrier and determines the length and with the help of the sensor the position of the sleeve relative to the coordinate system forming the reference point for this measurement of the sensor. In this context one speaks of measuring the sleeve. There in the control, an assignment between the sensor signals and the stroke position of the thread guide control, the stroke length and the position of the material to be wound up optimally adapt to the current sleeve dimensions on the sleeve. You can do this Call the step the initialization of the basic stroke.

Eventuelle Positionsunterschiede der einzelnen Hülsen auf ihrer Aufsteckspindel werden bei diesem Einmessen der Hülsen ebenfalls berücksichtigt. Der Einmessvorgang kann an einer Vielzahl von Produktionsstellen zeitgleich erfolgen, was im Vergleich zum heutigen, manuellen Verfahren eine beachtliche Zeiteinsparung bedeutet. Dazu kommt noch, dass durch unsachgemässes manuelles Einstellen bedingte Fehler ausgeschlossen sind.Any differences in position of the individual sleeves on their skewers are shown at this measurement of the sleeves is also taken into account. The calibration process can be carried out on a Large number of production sites take place simultaneously, which is compared to today's manual The process saves a considerable amount of time. On top of that comes that through improper manual setting conditional errors are excluded.

Neben der Initialisierung des Grundhubs kann auch eine eventuell vorhandene Flanschenkontur, beispielsweise bei einer Kingsspool abgetastet werden. Eine solche Konturabtastung kann beispielsweise dadurch erfolgen, dass gemäss einer weiteren bevorzugten Ausführungsform der erfindungsgemässen Vorrichtung bei einem mindestens einen Flansch aufweisenden Träger die Sensormittel durch einen mechanischen Fühler gebildet sind und der Fadenführer vor dem eigentlichen Wickelvorgang mindestens zwei vollständige Hubbewegungen in verschiedenen Abständen vom Mantel des Trägers ausführt, und dass in der Steuerung aus den Sensorsignalen eine Berechnung der Kontur des mindestens einen Flansches erfolgt.In addition to initializing the basic stroke, any flange contour that may be present, for example scanned at a king's pool. Such a contour scan can for example, in that according to a further preferred embodiment the device according to the invention with a carrier having at least one flange the sensor means are formed by a mechanical sensor and the thread guide before Actual winding process at least two complete lifting movements in different Distances from the jacket of the wearer, and that in the controller from the sensor signals the contour of the at least one flange is calculated.

Man kann die Initialisierung des Grundhubs zu einer dynamischen Messung erweitern, indem man nach der Initialisierung die Maschine startet und die Aufsteckspindeln mit voller Geschwindigkeit antreibt und anschliessend noch einen Einmessvorgang vornimmt. Bei dieser Messung wird berücksichtigt, dass die Hülsen bei höheren Geschwindigkeiten oftmals auf der Aufsteckspindel geringfügig verrutschen und dabei in ihre endgültige Position gelangen.The initialization of the basic stroke can be expanded to a dynamic measurement by one starts the machine after initialization and the skewers at full speed drives and then carries out a calibration process. In this measurement it is taken into account that the sleeves are often on the skewer at higher speeds slip slightly and get into their final position.

Wenn ein mit dem Fadenführer gekoppelter, spezieller Sensor verwendet wird, der beispielsweise ein optischer oder induktiver Sensor sein kann, dann wird dessen Signal während des Einmessvorgangs kontinuierlich überwacht. Eine sprunghafte Änderung des Sensorsignals wird als Übergang vom Wickelmantel der Hülse auf einen Flansch interpretiert. Diese in der Steuerung eindeutig identifizierbare Position wird registriert und der Hülse eindeutig zugeordnet. Bei einer vollständigen Hubbewegung des Fadenführers in beiden Richtungen ergeben sich zwei Koordinaten, die die Länge zwischen den Flanschen angeben.If a special sensor coupled to the thread guide is used, e.g. can be an optical or inductive sensor, then its signal during the calibration process continuously monitored. A sudden change in the sensor signal is considered Transition interpreted from the sleeve's winding jacket to a flange. This in control clearly identifiable position is registered and clearly assigned to the sleeve. At a complete lifting movement of the thread guide in both directions results in two coordinates, which indicate the length between the flanges.

Und diese Länge ist der Grundhub, der den Bereich bezeichnet, in dem gewickelt werden kann. Entsprechende Wickelgesetze für die Verlegegeschwindigkeit und andere Parameter werden dann in der Steuerung auf diesen Grundhub bezogen. Wenn ein optischer oder induktiver Sensor verwendet wird, kann es vorteilhaft sein, wenn die Hülsen die Innenkanten der Flanschen eindeutig bezeichnende, und optisch bzw. induktiv detektierbare Markierungen aufweisen.And this length is the basic stroke, which denotes the area in which winding can take place. Corresponding winding laws for the laying speed and other parameters then related to this basic stroke in the control. If an optical or inductive sensor is used, it may be advantageous if the sleeves the inner edges of the flanges have clearly identifying and optically or inductively detectable markings.

Wenn der Sensor durch den Fadenführer oder einen an diesem angeordneten mechanischen Fühler gebildet ist, dann wird dieser beim Einmessen auf die innere Kontur der Flansche auflaufen, was eine Veränderung im Motorstrom des Antriebsmotors bewirkt. Diese Veränderung, die das Sensorsignal darstellt, wird dann durch die Steuerung entsprechend ausgewertet. Da diese Ausführung keinen zusätzlichen Sensor benötigt, ist sie kostengünstig zu realisieren.If the sensor through the thread guide or a mechanical arranged on this Sensor is formed, then this will run onto the inner contour of the flanges when measuring, which causes a change in the motor current of the drive motor. This change that represents the sensor signal, is then evaluated accordingly by the control. This one Version does not require an additional sensor, it is inexpensive to implement.

Im folgenden wird die Erfindung anhand eines in der einzigen Zeichung dargestellten Ausführungsbeispiels näher erläutert, wobei die Zeichnung eine schematische Ansicht der Spulstelle einer Spulmaschine zeigt. Die Spulstelle ist stark vereinfacht dargestellt, bezüglich näherer Angaben wird auf die EP-A-0 453 622 und die EP-A-0 829 444 verwiesen.In the following the invention with reference to an embodiment shown in the single drawing explained in more detail, the drawing being a schematic view of the winding unit a winder shows. The winding unit is shown in a highly simplified manner with regard to further details reference is made to EP-A-0 453 622 and EP-A-0 829 444.

Die Spulstelle besteht im wesentlichen aus einer motorisch antreibbaren Spindel 1 mit einem Positionierring 2 zur Aufnahme und Halterung einer Flanschhülse 3 mit je einem Flansch 4 an ihren Stirnseiten und aus einer Fadenverlegung 5. Auf die Hülse 3 soll mit der Fadenverlegung 5 ein von einer Vorratsspule bezogener Faden (nicht dargestellt) zu einem Wickelkörper aufgewickelt werden. Die Fadenverlegung 5 enthält als wesentlichstes Element einen Fadenführer 6, der entlang der Achse der Hülse 3 eine oszillierende Changierbewegung ausführt. Am Fadenführer 6 sind die einen Enden von zwei durch Saiten, Drahtseile oder Riemen gebildeten Zugorganen 7 befestigt, welche über zwei auf einer Trägerplatte 8 der Fadenverlegung 5 gelagerte Umlenkrollen 9 zu einem von einem Motor 10 angetriebenen Treibrad 11 laufen. Auf dem Treibrad 11 sind die anderen Enden der Zugorgane 7 verankert; jedes Zugorgan 7 ist zum Antrieb des Fadenführers 5 in einer der beiden Hubrichtungen vorgesehen. Der Motor 10 ist beispielsweise ein Schrittmotor.The winding unit consists essentially of a motor-driven spindle 1 with a Positioning ring 2 for receiving and holding a flange sleeve 3, each with a flange 4 their end faces and from a thread laying 5. On the sleeve 3 should with the thread laying 5 a thread (not shown) obtained from a supply spool is wound into a winding body become. The thread laying 5 contains a thread guide 6 as the most important element, which performs an oscillating traversing movement along the axis of the sleeve 3. On the thread guide 6 are the one ends of two traction elements formed by strings, wire ropes or belts 7 attached, which is mounted on two on a carrier plate 8 of the thread laying 5 Deflection rollers 9 run to a drive wheel 11 driven by a motor 10. On the driving wheel 11, the other ends of the tension members 7 are anchored; each tension member 7 is for driving of the thread guide 5 is provided in one of the two lifting directions. The engine 10 is, for example a stepper motor.

Dem Motor 10 ist ein Sensor 12 zur Detektion der Drehposition des Treibrads 11 und damit der Changierposition des Fadenführers 5 zugeordnet. Der Sensor 12 ist vorzugsweise ein aus einer Sende- und aus Empfangsdiode bestehender fotoelektrischer Sensor, der die Bewegung einer mit dem Rotor des Motors 10 starr verbundenen Encoderscheibe (nicht dargestellt) abtastet. Die Position des Rotors weist zur Position des Fadenführers 6 ein festes Übersetzungsverhältnis auf. Bezüglich des Sensors 12 wird auf die EP-A-0 829 444 und auf die dazu korrespondierende U.S. Anmeldung Nr. 08/931,607 verwiesen. Der Motor 10 und der Sensor 12 sind mit einer Steuerung 13 verbunden, welche einerseits den Motor 10 steuert und andererseits vom Sensor 12 ständig die aktuelle Rotorposition erfährt. Die Steuerung 13 kennt also zu jedem Zeitpunkt die aktuelle Position des Fadenführers 6.The motor 10 is a sensor 12 for detecting the rotational position of the drive wheel 11 and thus the Traversing position of the thread guide 5 assigned. The sensor 12 is preferably one of a kind Transmitting and receiving diode existing photoelectric sensor that detects the movement of a with the rotor of the motor 10 rigidly connected encoder disc (not shown). The The position of the rotor has a fixed transmission ratio to the position of the thread guide 6 on. With regard to sensor 12, reference is made to EP-A-0 829 444 and to the corresponding one U.S. Application No. 08 / 931,607 referenced. The motor 10 and the sensor 12 are with a Controller 13 connected, which controls the motor 10 on the one hand and the sensor on the other 12 constantly experiences the current rotor position. The controller 13 therefore knows at all times the current position of the thread guide 6.

Dem Fadenführer 6 ist ein Sensor für die Position der Innenflanken der Flansche 4 der Hülse 3 zugeordnet. Dieser Sensor, der vorzugsweise auf dem Fadenführer 6 montiert ist, ist beispielsweise ein optischer, induktiver oder mechanischer Sensor, wobei bei Verwendung eines optischen oder induktiven Sensors auf der Hülse 3 zwei die Position der Innenflanken der Flansche 4 anzeigende Markierungen vorgesehen sein können. Der mechanische Sensor ist beispielsweise eine mit dem Fadenführer 6 gekoppelte, vorzugsweise eine mit diesem verbundene, Tastspitze 14, oder der Fadenführer selbst.The thread guide 6 is a sensor for the position of the inner flanks of the flanges 4 of the sleeve 3 assigned. This sensor, which is preferably mounted on the thread guide 6, is for example an optical, inductive or mechanical sensor, wherein when using an optical or inductive sensor on the sleeve 3 two the position of the inner flanks of the flanges 4 indicating markings can be provided. The mechanical sensor is for example a probe tip coupled to the thread guide 6, preferably a probe tip connected to it 14, or the thread guide himself.

Vor dem eigentlichen Wickelprozess findet ein sogenannter Einmessvorgang zur Bestimmung der Position der Innenflanken der Flansche 4 statt. Dabei wird der Fadenführer 6 ohne Faden entlang der Hülse 3 bewegt und es wird anhand des Signals des Sensors der Abstand zwischen den Innenflanken der Flansche 4, der Grundhub, und die Lage dieser Innenflanken relativ zum Koordinatensystem des Fadenführers 6 bestimmt.Before the actual winding process, a so-called measuring process takes place for the determination the position of the inner flanks of the flanges 4 instead. The thread guide 6 is without thread moved along the sleeve 3 and it is based on the signal from the sensor, the distance between the inner flanks of the flanges 4, the basic stroke, and the position of these inner flanks relative to Coordinate system of the thread guide 6 is determined.

Die Steuerung "weiss", bei welchen Positionen des Treibrads 11 die Innenflanken der Flansche 4 liegen und kann daraus sowohl die Länge des Hubs des Fadenführers 6 berechnen als auch diesen Hub relativ zu den Flanschen 4 ausrichten. Die den Innenflanken der Flansche 4 entsprechenden Fadenführerpositionen werden in Zwischenspeicher der Steuerung 13 geschrieben und voneinander subtrahiert. Das Ergebnis ergibt die freie Länge zwischen den Flanschen 4 und kann für die Bestimmung der Hublänge und für die richtige Positionierung der Fadenverlegung 5 benutzt werden. Ausserdem kann man nach dieser statischen Bestimmung des Grundhubs die Spindeln 1 mit den Hülsen 3 antreiben und anschliessend den Einmessvorgang wiederholen. Dabei kann das System eventuelle durch die Rotation verursachte Verschiebungen der Hülsen 3 auf den Spindeln 1 registrieren und die Ausrichtung des Hubs auf die Hülsen entsprechend korrigieren.The control "knows" at which positions of the drive wheel 11 the inner flanks of the flanges 4 lie and can calculate the length of the stroke of the thread guide 6 as well align this stroke relative to the flanges 4. The corresponding to the inner flanks of the flanges 4 Thread guide positions are written in the buffer of the control 13 and subtracted from each other. The result is the free length between the flanges 4 and can be used for determining the stroke length and for the correct positioning of the thread laying 5 can be used. You can also use this static determination of the basic stroke drive the spindles 1 with the sleeves 3 and then repeat the measuring process. The system can compensate for any shifts caused by the rotation of the sleeves 3 on the spindles 1 and the alignment of the stroke on the sleeves accordingly correct.

Bei Verwendung eines optischen oder induktiven Sensors wird die Lage der Flansche 4 aufgrund einer sprunghaften Änderung des Sensorsignals erkannt. Bei Verwendung eines mechanischen Abtasters (Tastspitze 14 oder Fadenführer 6) als Sensor wird dieser seitlich auf den Flansch auflaufen, was eine Veränderung im Motorstrom des Antriebsmotors bewirkt. In allen Fällen wird also die Lage der Flansche eindeutig erkannt.When using an optical or inductive sensor, the position of the flanges 4 is due a sudden change in the sensor signal is detected. When using a mechanical Scanner (probe tip 14 or thread guide 6) as a sensor, this is on the side Flange run up, which causes a change in the motor current of the drive motor. In all In such cases, the position of the flanges is clearly recognized.

Falls die Innenflanken der Flansche nicht senkrecht zur Achse der Hülsen 3 verlaufen, sondern eine schräge oder gekrümmte Kontur aufweisen, kann diese Kontur mit einem mechanischen Abtaster bestimmt werden, indem mit diesem (Fadenführer 6 eventuell mit Tastspitze 14) mindestens zwei Einmessvorgänge in verschiedenen Abständen vom Mantel der Hülse 3 ausgeführt werden. Der Abtaster wird bei diesen mindestens zwei Einmessvorgängen an verschiedenen Stellen der Kontur des jeweiligen Flansches mit entsprechend verschiedenen Hubpositionen des Fadenführers 6 auftreffen. Die Steuerung 13 kann aus den Koordinaten dieser Auftreffpunkte den Verlauf der Kontur berechnen. Es ist auch möglich, den mechanischen Abtaster so auszubilden, dass er wie bei einer Konturdrehbank die Hülsengeometrie abtastet.If the inner flanks of the flanges are not perpendicular to the axis of the sleeves 3, but instead have an oblique or curved contour, this contour with a mechanical Scanners can be determined by using this (thread guide 6 possibly with probe tip 14) at least two measuring operations at different distances from the jacket of the sleeve 3 become. With these at least two calibration processes, the scanner is used on different Set the contour of the respective flange with different stroke positions of the thread guide 6 hit. The controller 13 can from the coordinates of these impact points calculate the course of the contour. It is also possible to use the mechanical scanner to be designed so that it scans the sleeve geometry like a contour lathe.

Da in der Regel die Fadenverlegung 5 und damit auch der Fadenführer 6 in einem solchen Abstand von der Spindel 1 angeordnet ist, dass der mechanische Abtaster die Flansche 4 nicht berührt, wird vor dem Start des Einmessvorgangs der Abstand zwischen Spindel 1 und Fadenverlegung 5 so weit reduziert, dass der Abtaster mit Sicherheit auf die Flansche aufläuft.As a rule, the thread laying 5 and thus also the thread guide 6 at such a distance the spindle 1 is arranged so that the mechanical scanner does not touch the flanges 4, the distance between spindle 1 and thread laying is determined before the start of the measuring process 5 reduced so far that the scanner surely runs onto the flanges.

Bei Hülsen ohe Flansche wird für den Einmessvorgang beispielsweise ein am Fadenführer montierter mechanischer Abtaster verwendet, der den Höhenunterschied zwischen Hülsenoberfläche und Aufsteckspindel detektiert, wenn er über den Hülsenrand fährt. Bei Ausbildung der Aufsteckspindel mit einem Oberflächenmaterial, welches verglichen mit der Hülsenoberfläche signifikant verschiedene Reflexionseigenschaften aufweist, kann auch eine optische Detektion der Hülsenränder erfolgen.For sleeves without flanges, for example, a thread guide is used for the measuring process mounted mechanical scanner, the difference in height between the sleeve surface and slip spindle detected when it runs over the sleeve edge. During training the skewer with a surface material, which compared to the sleeve surface has significantly different reflection properties, optical detection can also of the sleeve edges.

Claims (10)

Vorrichtung zum Aufwickeln eines Fadens auf einen Träger (3), mit einem oszillierend antreibbaren Fadenführer (6), welcher beim Aufwickeln eine Hubbewegung entlang der Achse des Trägers (3) ausführt, dadurch gekennzeichnet, dass mit dem Fadenführer (6) gekoppelte Sensormittel für die Messung der Länge und der Position des Trägers (3) relativ zu einem Bezugspunkt des Fadenführers (6) vorgesehen sind, und dass anhand dieser Messung eine Positionierung des Hubs des Fadenführers (6) erfolgt.Device for winding a thread on a carrier (3), with an oscillatingly drivable Thread guide (6), which has a lifting movement along the axis during winding of the carrier (3), characterized in that coupled to the thread guide (6) Sensor means for measuring the length and position of the carrier (3) relative to a reference point of the thread guide (6) is provided, and that on the basis of this measurement the stroke of the thread guide (6) is positioned. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Fadenführer (6) vor dem eigentlichen Wickelvorgang mindestens eine vollständige Hubbewegung ausführt, bei welcher die genannte Messung erfolgt.Apparatus according to claim 1, characterized in that the thread guide (6) before the actual winding process carries out at least one complete lifting movement, in which the measurement mentioned takes place. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die genannten Sensormittel durch einen mit dem Fadenführer (6) gekoppelten Sensor (14) oder durch den Fadenführer (6) selbst gebildet und an eine Steuerung (13) angeschlossen sind, in welcher eine eindeutige Zuordnung der Signale der Sensormittel zur jeweiligen Hubposition des Fadenführers (6) erfolgt.Device according to claim 2, characterized in that said sensor means by a sensor (14) coupled to the thread guide (6) or by the thread guide (6) themselves formed and connected to a controller (13) in which a unique Assignment of the signals of the sensor means to the respective lifting position of the thread guide (6) is done. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Sensor durch einen optischen oder induktiven Sensor gebildet ist.Apparatus according to claim 3, characterized in that the sensor by an optical or inductive sensor is formed. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet dass der Sensor durch einen mechanischen Abtaster (6, 14) gebildet ist.Apparatus according to claim 3, characterized in that the sensor by a mechanical Sampler (6, 14) is formed. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass bei einem mindestens einen Flansch (4) aufweisenden Träger (3) die Sensormittel durch einen mechanischen Fühler (6, 14) gebildet sind und der Fadenführer (6) vor dem eigentlichen Wickeivorgang mindestens zwei vollständige Hubbewegungen in verschiedenen Abständen vom Mantel des Träges (3) ausführt, und dass in der Steuerung (13) aus den Sensorsignalen eine Berechnung der Kontur des mindestens einen Flansches (4) erfolgt.Apparatus according to claim 3, characterized in that at least one Carrier (3) with flange (4), the sensor means by a mechanical sensor (6, 14) are formed and the thread guide (6) at least before the actual winding process two complete lifting movements at different distances from the jacket of the support (3) executes, and that in the controller (13) from the sensor signals a calculation of Contour of the at least one flange (4) takes place. Vorrichtung nach einem der Ansprüche 1 bis 5, gekennzeichnet durch einen Motor (10) für den Antrieb des Fadenführers (6), welcher mit dem Fadenführer (6) so verbunden ist, dass eine eindeutige Zuordnung zwischen der Hubposition des Fadenführers (6) und der Drehposition des Rotors des Motors (10) besteht, und durch einen Sensor (12) für die Drehposition des Rotors, welcher ebenso wie der Motor (10) mit der Steuerung (13) verbunden ist. Device according to one of claims 1 to 5, characterized by a motor (10) for the drive of the thread guide (6), which is connected to the thread guide (6) so that a clear association between the stroke position of the thread guide (6) and the rotational position the rotor of the motor (10), and by a sensor (12) for the rotational position of the rotor, which, like the motor (10), is connected to the controller (13). Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass bei einem durch eine Flanschhülse (3) gebildeten Träger durch die Sensormittel eine Ausmessung der Position der Innenflanken der Flansche (4) und der freien Länge zwischen diesen erfolgt.Device according to one of claims 1 to 6, characterized in that at one through a flange sleeve (3) formed by the sensor means a measurement of the Position of the inner flanks of the flanges (4) and the free length between them. Vorrichtung nach den Ansprüchen 7 und 8, dadurch gekennzeichnet, dass bei Verwendung eines optischen oder induktiven Sensors die Bestimmung der Position der Innenflanken der Flansche (4) anhand einer sprungartigen Änderung des Signals des Sensors erfolgt.Device according to claims 7 and 8, characterized in that when used of an optical or inductive sensor, the determination of the position of the inner flanks of the Flanges (4) based on a sudden change in the signal from the sensor. Vorrichtung nach den Ansprüchen 7 und 8, dadurch gekennzeichnet, dass bei Verwendung eines mechanischen Abtasters (6, 14) die Bestimmung der Position der Innenflanken der Flansche (4) anhand eines plötzlichen Anstiegs des Stroms des Motors (10) erfolgt.Device according to claims 7 and 8, characterized in that when used a mechanical scanner (6, 14) determining the position of the inner flanks of the Flanges (4) based on a sudden increase in the current of the motor (10).
EP19990113889 1999-04-30 1999-07-16 Yarn winder Expired - Lifetime EP1048601B1 (en)

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