EP0867543A2 - Method and device for controlling and minitoring the operation of yarn scissors driven by electric motor on looms - Google Patents

Method and device for controlling and minitoring the operation of yarn scissors driven by electric motor on looms Download PDF

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Publication number
EP0867543A2
EP0867543A2 EP98103545A EP98103545A EP0867543A2 EP 0867543 A2 EP0867543 A2 EP 0867543A2 EP 98103545 A EP98103545 A EP 98103545A EP 98103545 A EP98103545 A EP 98103545A EP 0867543 A2 EP0867543 A2 EP 0867543A2
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EP
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Prior art keywords
motor
scissors
motor shaft
shaft
electric motor
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Granted
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EP98103545A
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German (de)
French (fr)
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EP0867543B1 (en
EP0867543A3 (en
Inventor
Kurt Motz
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/44—Automatic stop motions acting on defective operation of loom mechanisms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/70—Devices for cutting weft threads

Definitions

  • the invention relates to a method for controlling and monitoring the cutting function of a electric motor driven thread scissors in weaving machines according to the generic term of Claims 1 and 10.
  • a much more flexible thread scissors for weft threads is known from EP 0 284 766 B1.
  • This thread scissors has a drive independent of the main drive, so that the time the cutting process in relation to the weaving cycle by means of a programmable control can be specified arbitrarily.
  • the drive consists of a stepper motor on its Shaft the movable cutting edge is attached, the motor shaft of the stepper motor alternately driven forward and backward.
  • the object of the invention is a method for controlling and monitoring the cutting function an electric motor driven thread scissors and a thread scissors, in particular for Detaching catch strips to create, which both great flexibility in execution the cutting function allows, as well as in the most varied of mechanical conditions and can be used in a wide variety of local locations.
  • Another task is to increase the life of the scissor drive and one Provide monitoring for function and damage to the thread scissors.
  • the invention is based on the technical teaching of the claim 1 and of claim 10.
  • the engine speed and thus the cutting cycle and cutting time is one electronic control controlled and monitored, which is advantageous in the machine control is integrated and can be programmed via the operator terminal.
  • the rotation of the motor shaft is monitored by a monitoring device in the form of a sensor supervised.
  • a magnetic one is preferred due to the ambient conditions Sensor (Hall sensor) used.
  • Sensor Hall sensor
  • optical, capacitive, inductive or other transducers can be used if the special application requires it. Can be advantageous through this type of monitoring both defects of the drive motor and breakage or Jamming of the movable scissor part of the thread scissors are detected.
  • the speed of the motor shaft of the Scissor motor in an arbitrarily adjustable ratio to the speed of the main shaft of the Weaving machine drive can be operated. That means that with a fabric with relative high weft density the thread scissors cut, for example, in a ratio of 1: 5 to the weft insertion, that is, after every fifth weft insertion, a single cutting operation for several weft threads takes place, which are tied in the fabric and a catch strip. So there are the weft threads cut the last 5 weft entries between the fabric and the catch bar.
  • the thread scissors according to the invention are particularly suitable for cutting off catch strips, because the predeterminable speed ratio of the scissors drive to the main shaft drive Weaving machine advantageously several weft threads already registered with one single cutting process can be cut.
  • the thread scissors can as well as a so-called center separating device for separating a fabric web against the Weaving direction can be used, or to separate each individual entered Weft.
  • the drive 10 of the thread scissors with a control electronics 2 and the signal-transmitting connection 5,6 to the weaving machine control 1 is shown.
  • the drive comprises an electric motor 10, which is preferably designed as a stepper motor, and one Control electronics 2 for controlling the motor functions.
  • the control electronics 2 are connected to the weaving machine control system 1 via a signal line 5 connected and receives from this control information for controlling the motor, e.g. Speed, direction of rotation, synchronization signals etc.
  • the speed of the motor 10 pre-programmed in the loom control 1 Safety edge scissors 7 are monitored by a monitoring device 3, 4, which is operated via a Signal line 3a is connected to the control electronics 2, which in turn with the Loom control 1 is connected via the signal line 6.
  • a control loop is created that allows reliable monitoring of the function of the motor of the thread scissors.
  • the device 3 is preferably designed as a magnetic pickup. This is on the Motor shaft 11 of the motor 10 or the device 4 on a part firmly connected to it arranged, which is a permanent magnet, the with each full rotation of the motor shaft 11 Transducer 3 passes and a signal from the control electronics 2 is detected, which is via the Signal line 6 of the weaving machine control 1 is fed.
  • the Thread scissors 7 consists of a fixed scissor part 8 and a movable Scissor part 9.
  • the motor 10 On the fixed scissor part 8, the motor 10 is arranged, which on it Motor shaft 11 carries a drive plate 12. The motor shaft 11 rotates in a direction 15 at specifiable speed.
  • the movable scissor part 9 is in relation to the fixed scissor part 8 about the scissor axis 8a is arranged pivotably and comprises at the end opposite the cutting edge Elongated hole 14 in which a driver pin 13 engages.
  • the driver pin 13 is fixed in Edge area of the drive plate 12 arranged. Due to the eccentric arrangement of the driving pin 13 with respect to the motor shaft 11 the rotational movement of the motor shaft 11 into a cutting movement of the movable Scissor part 9 implemented in a direction of the double arrow 16. A full rotation of the motor shaft 11 of the motor 10 corresponds to a cutting cycle Thread scissors 7.
  • the monitoring device 3, 4 is arranged on the motor 10 and comprises one Permanent magnet 4, e.g. is arranged on the drive plate 12 and the at each Rotation of the shaft 11 of the motor a fixed magnetic pickup 3, e.g. passed a Hall sensor.
  • the Hall sensor inputs each time the motor shaft 11 is rotated electrical signal to the control electronics 2. For some reason the motor stops rotating or does not occur predictable irregularities, this is recognized by the control electronics 2 and inputs Error signal to the weaving machine control 1. An error routine is then initiated and, if necessary, the weaving process is stopped.
  • An electric motor drive a thread scissors the motor shaft according to the state of the Technology alternating forwards and backwards, i.e. performing a partial rotation, can also are monitored according to the invention.
  • Such thread scissors are used as weft scissors Use.
  • the ratio of Partial rotation of the motor shaft of the scissor motor to the speed of the main shaft of the Loom drive does not matter.

Abstract

A mechanism to control and monitor a yarn cutter, at a loom, generates at least one electrical signal on rotation of the drive motor shaft, which is passed by the control electronics to the loom control. On the omission of a signal, the weaving action is stopped. Also claimed is an apparatus with a monitor (4) at the shaft of the electromotor (10) or at least at the shaft shrouding. A second monitor (3) is outside the rotating zone of the motor shaft. Both monitors (3,4) register the motor shaft rotation.

Description

Die Erfindung betrifft ein Verfahren zur Steuerung und Überwachung der Schneidfunktion einer elektromotorisch angetriebenen Fadenschere in Webmaschinen nach dem Oberbegriff der Patentanspruche 1 und 10.The invention relates to a method for controlling and monitoring the cutting function of a electric motor driven thread scissors in weaving machines according to the generic term of Claims 1 and 10.

Aus der DE 40 00 856 A1 ist eine Fadenschere zum Abtrennen des eingetragenen Schußfadens bei Webmaschinen bekannt, welche über einen Nockenmechanismus oder dergleichen mit dem Hauptantrieb der Webmaschine mechanisch gekoppelt ist. Die Fadenschere arbeitet synchron zum Maschinenrhythmus. Der Zeitpunkt des Schneidevorgangs ist deshalb in Bezug auf den Webzyklus fest vorgegeben und nicht oder nur durch größere mechanische Umbauten veranderbar.DE 40 00 856 A1 describes a thread scissors for severing the weft thread known in looms, which with a cam mechanism or the like with Main drive of the loom is mechanically coupled. The thread scissors work synchronously with Machine rhythm. The time of the cutting process is therefore in relation to the Fixed weaving cycle and not or only through major mechanical conversions changeable.

Eine wesentlich flexiblere Fadenschere für Schußfäden ist aus der EP 0 284 766 B1 bekannt. Diese Fadenschere besitzt einen vom Hauptantrieb unabhängigen Antrieb, so daß der Zeitpunkt des Schneidvorgangs in Bezug auf den Webzyklus mittels einer programmierbaren Steuerung beliebig vorgegeben werden kann. Der Antrieb besteht hierbei aus einen Schrittmotor, auf dessen Welle die bewegliche Schneide befestigt ist, wobei die Motorwelle des Schrittmotors abwechselnd vorwärts und rückwärts angetrieben wird.A much more flexible thread scissors for weft threads is known from EP 0 284 766 B1. This thread scissors has a drive independent of the main drive, so that the time the cutting process in relation to the weaving cycle by means of a programmable control can be specified arbitrarily. The drive consists of a stepper motor on its Shaft the movable cutting edge is attached, the motor shaft of the stepper motor alternately driven forward and backward.

Das abwechselnde Vorwärts- und Rückwartsdrehen der Motorwelle besitzt jedoch den Nachteil, daß der Schrittmotor hoher Beanspruchung und hohem Verschleiß durch fortwährende Beschleunigungs- und Bremsvorgänge ausgesetzt ist. Weiterhin ist keine Überwachung der Fadenschere auf Funktion oder Beschädigung vorgesehen.However, the alternating forward and reverse turning of the motor shaft has the disadvantage that the stepper motor high stress and high wear due to continuous Acceleration and braking processes is exposed. Furthermore, there is no monitoring of the Thread scissors are provided for function or damage.

Aufgabe der Erfindung ist es, ein Verfahren zur Steuerung und Überwachung der Schneidfunktion einer elektromotorisch angetriebenen Fadenschere und eine Fadenschere, insbesondere zum Abtrennen von Fangleisten zu schaffen, welches sowohl eine große Flexibilität in der Ausführung der Schneidfunktion zuläßt, als auch bei den verschiedensten mechanischen Gegebenheiten und an den verschiedensten örtlichen Lagen einsetzbar ist. Eine weitere Aufgabe besteht darin, die Lebensdauer des Scherenantriebes zu erhöhen und eine Überwachung auf Funktion und Beschädigung der Fadenschere vorzusehen.The object of the invention is a method for controlling and monitoring the cutting function an electric motor driven thread scissors and a thread scissors, in particular for Detaching catch strips to create, which both great flexibility in execution the cutting function allows, as well as in the most varied of mechanical conditions and can be used in a wide variety of local locations. Another task is to increase the life of the scissor drive and one Provide monitoring for function and damage to the thread scissors.

Zur Lösung der gestellten Aufgabe ist die Erfindung durch die technische Lehre des Anspruchs 1 und des Anspruchs 10 gekennzeichnet.To achieve the object, the invention is based on the technical teaching of the claim 1 and of claim 10.

Damit besteht der Vorteil, daß z.B. der Motor einer Fangleistenschere während des Betriebs der Fadenschere kontinuierlich in einer Drehrichtung betrieben werden kann und keine Start- und Stopzyklen durchlaufen muß. Das erhöht die Standzeit des Motors.This has the advantage that e.g. the motor of a safety edge shear during the operation of the Thread scissors can be operated continuously in one direction of rotation and no start and Must go through stop cycles. This increases the service life of the engine.

Die Motordrehzahl und damit der Schneidzyklus und Schneidzeitpunkt wird von einer elektronischen Steuerung gesteuert und überwacht, welche vorteilhaft in die Maschinensteuerung integriert ist und über das Bedienterminal programmiert werden kann.The engine speed and thus the cutting cycle and cutting time is one electronic control controlled and monitored, which is advantageous in the machine control is integrated and can be programmed via the operator terminal.

Die Drehung der Motorwelle wird durch eine Überwachungseinrichtung in Form eines Sensors überwacht. Dabei wird aufgrund der Umgebungsbedingungen bevorzugt ein magnetischer Aufnehmer (Hallsensor) eingesetzt. Natürlich können auch optische, kapazitive, induktive oder andere Aufnehmer eingesetzt werden, falls es der spezielle Einsatz erfordert. Vorteilhaft können durch diese Art der Überwachung sowohl Defekte des Antriebsmotors als auch Bruch oder Verklemmung des beweglichen Scherenteils der Fadenschere erfasst werden.The rotation of the motor shaft is monitored by a monitoring device in the form of a sensor supervised. A magnetic one is preferred due to the ambient conditions Sensor (Hall sensor) used. Of course, optical, capacitive, inductive or other transducers can be used if the special application requires it. Can be advantageous through this type of monitoring both defects of the drive motor and breakage or Jamming of the movable scissor part of the thread scissors are detected.

Zur Standzeiterhöhung der Fadenschere ist vorgesehen, daß die Drehzahl der Motorwelle des Scherenmotors in einem beliebig einstellbaren Verhältnis zur Drehzahl der Hauptwelle des Webmaschinenantriebs betrieben werden kann. Das heißt, daß bei einem Gewebe mit relativ hoher Schußdichte die Fadenschere beispielsweise im Verhältnis 1:5 zum Schußeintrag schneidet, d.h., daß nach jedem fünften Schußeintrag ein einziger Schneidvorgang für mehrere Schußfäden erfolgt, die in dem Gewebe und einer Fangleiste abgebunden sind. Es werden also die Schußfäden der jeweils letzten 5 Schußeinträge zwischen dem Gewebe und der Fangleiste geschnitten.To increase the service life of the thread scissors, it is provided that the speed of the motor shaft of the Scissor motor in an arbitrarily adjustable ratio to the speed of the main shaft of the Weaving machine drive can be operated. That means that with a fabric with relative high weft density the thread scissors cut, for example, in a ratio of 1: 5 to the weft insertion, that is, after every fifth weft insertion, a single cutting operation for several weft threads takes place, which are tied in the fabric and a catch strip. So there are the weft threads cut the last 5 weft entries between the fabric and the catch bar.

Vorteilhaft ist außerdem, daß in Abhängigkeit vom Schußmaterial und dem Webmuster auch während eines Rapportwebens (Weben mit hoher Schußdichte) unterschiedliche Drehzahlverhältnisse bestehen können.It is also advantageous that, depending on the weft material and the weaving pattern, too during a repeat weaving (weaving with high weft density) different Speed ratios can exist.

Die erfindungsgemäße Fadenschere ist insbesondere zum Abtrennen von Fangleisten geeignet, da durch das vorgebbare Drehzahlverhältnis des Scherenantriebs zum Hauptwellenantrieb der Webmaschine in vorteilhafter Weise gleich mehrere bereits eingetragene Schußfäden mit einem einzigen Schneidvorgang geschnitten werden können.The thread scissors according to the invention are particularly suitable for cutting off catch strips, because the predeterminable speed ratio of the scissors drive to the main shaft drive Weaving machine advantageously several weft threads already registered with one single cutting process can be cut.

Durch die große Flexibilität bei der Montage und der Ansteuerung kann die Fadenschere jedoch genausogut als sogenannte Mittentrenneinrichtung zum Trennen einer Gewebebahn entgegen der Webrichtung verwendet werden, oder aber zum Abtrennen jedes einzelnen eingetragenen Schußfadens.Due to the great flexibility in assembly and control, the thread scissors can as well as a so-called center separating device for separating a fabric web against the Weaving direction can be used, or to separate each individual entered Weft.

Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels erläutert.The invention is explained below using an exemplary embodiment.

Hierbei ergeben sich aus den Zeichnungen und deren Beschreibung weitere Merkmale und Vorteile der Erfindung.

  • Figur 1 zeigt ein Blockschaltbild zur Steuerung des Scherenantriebs durch die Webmaschinensteuerung und den Signalfluß der Überwachungseinrichtung zur Webmaschinensteuerung;
  • Figur 2 zeigt schematisch den möglichen Aufbau und die Wirkungsweise der Fadenschere.
    • Further features and advantages of the invention result from the drawings and their description.
  • Figure 1 shows a block diagram for controlling the scissors drive by the weaving machine control and the signal flow of the monitoring device for weaving machine control;
  • Figure 2 shows schematically the possible structure and operation of the thread scissors.

    • In Figur 1 ist schematisch der Antrieb 10 der Fadenschere mit einer Ansteuerelektronik 2 und deren signalübertragende Verbindung 5,6 zur Webmaschinensteuerung 1 dargestellt. Der Antrieb umfasst einen Elektromotor 10, der bevorzugt als Schrittmotor ausgebildet ist, und eine Ansteuerelektronik 2 zur Steuerung der Motorfunktionen.In Figure 1, the drive 10 of the thread scissors with a control electronics 2 and the signal-transmitting connection 5,6 to the weaving machine control 1 is shown. The drive comprises an electric motor 10, which is preferably designed as a stepper motor, and one Control electronics 2 for controlling the motor functions.

    Die Ansteuerelektronik 2 ist über eine Signalleitung 5 mit der Webmaschinensteuerung 1 verbunden und erhält von dieser Steuerinformationen zur Ansteuerung des Motors, wie z.B. Drehzahl, Drehrichtung, Synchronisationssignale etc.The control electronics 2 are connected to the weaving machine control system 1 via a signal line 5 connected and receives from this control information for controlling the motor, e.g. Speed, direction of rotation, synchronization signals etc.

    Die in der Webmaschinensteuerung 1 vorprogrammierte Drehzahl des Motors 10 der Fangleistenschere 7 wird von einer Überwachungseinrichtung 3,4 überwacht, welche über eine Signalleitung 3a mit der Ansteuerelektronik 2 in Verbindung steht, die wiederum mit der Webmaschinensteuerung 1 über die Signalleitung 6 verbunden ist. Es entsteht ein Regelkreis, der eine zuverlässige Überwachung der Funktion des Motors der Fadenschere zulässt. Die Einrichtung 3 ist bevorzugt als magnetischer Aufnehmer ausgebildet. Dazu ist auf der Motorwelle 11 des Motors 10 oder an einem mit dieser fest verbundenen Teil die Einrichtung 4 angeordnet, die ein Permanentmagnet ist, der bei jeder Volldrehung der Motorwelle 11 den Aufnehmer 3 passiert und ein Signal von der Ansteuerelektronik 2 detektiert wird, das über die Signalleitung 6 der Webmaschinensteuerung 1 zugeführt wird.The speed of the motor 10 pre-programmed in the loom control 1 Safety edge scissors 7 are monitored by a monitoring device 3, 4, which is operated via a Signal line 3a is connected to the control electronics 2, which in turn with the Loom control 1 is connected via the signal line 6. A control loop is created that allows reliable monitoring of the function of the motor of the thread scissors. The device 3 is preferably designed as a magnetic pickup. This is on the Motor shaft 11 of the motor 10 or the device 4 on a part firmly connected to it arranged, which is a permanent magnet, the with each full rotation of the motor shaft 11 Transducer 3 passes and a signal from the control electronics 2 is detected, which is via the Signal line 6 of the weaving machine control 1 is fed.

    Tritt ein Defekt am Motor 10 auf oder hat sich die Fadenschere verklemmt, so unterbleibt die Rotation der Motorwelle 11. Folglich wird der Aufnehmer 3 nicht erregt. Die Ansteuerelektronik 2 sendet ein Fehl-Signal an die Webmaschinensteuerung 1. In der Webmaschinensteuerung erfolgt daraufhin eine Fehlsignalauswertung, in deren Ergebnis z.B. ein Anhalten des Webprozesses bewirkt wird.If a defect occurs in the motor 10 or the thread scissors are jammed, this will not occur Rotation of the motor shaft 11. Consequently, the pickup 3 is not energized. The control electronics 2 sends a false signal to the weaving machine control 1. In the weaving machine control there is then a false signal evaluation, the result of which is e.g. stopping the Weaving process is effected.

    Eine mögliche Ausbildung der Fadenschere ist in Figur 2 schematisch dargestellt. Die Fadenschere 7 besteht aus einem feststehenden Scherenteil 8 und aus einem beweglichen Scherenteil 9. Am feststehende Scherenteil 8 ist der Motor 10 angeordnet, welcher auf seiner Motorwelle 11 eine Mitnehmerscheibe 12 trägt. Die Motorwelle 11 rotiert in einer Richtung 15 bei vorgebbarer Drehzahl.A possible design of the thread scissors is shown schematically in Figure 2. The Thread scissors 7 consists of a fixed scissor part 8 and a movable Scissor part 9. On the fixed scissor part 8, the motor 10 is arranged, which on it Motor shaft 11 carries a drive plate 12. The motor shaft 11 rotates in a direction 15 at specifiable speed.

    Das bewegliche Scherenteil 9 ist in Bezug auf das feststehende Scherenteil 8 um die Scherenachse 8a schwenkbar angeordnet und umfasst an dem der Schneide gegenüberliegenden Ende ein Langloch 14, in welches ein Mitnehmerstift 13 eingreift. Der Mitnehmerstift 13 ist fest im Randbereich der Mitnehmerscheibe 12 angeordnet. Durch die in Bezug auf die Motorwelle 11 exzentrische Anordnung des Mitnehmerstiftes 13 wird die Rotationsbewegung der Motorwelle 11 in eine Schneidbewegung des beweglichen Scherenteils 9 in eine Richtung des Doppelpfeiles 16 umgesetzt. Dabei entspricht eine Volldrehung der Motorwelle 11 des Motors 10 einem Schneidzyklus der Fadenschere 7.The movable scissor part 9 is in relation to the fixed scissor part 8 about the scissor axis 8a is arranged pivotably and comprises at the end opposite the cutting edge Elongated hole 14 in which a driver pin 13 engages. The driver pin 13 is fixed in Edge area of the drive plate 12 arranged. Due to the eccentric arrangement of the driving pin 13 with respect to the motor shaft 11 the rotational movement of the motor shaft 11 into a cutting movement of the movable Scissor part 9 implemented in a direction of the double arrow 16. A full rotation of the motor shaft 11 of the motor 10 corresponds to a cutting cycle Thread scissors 7.

    Die Überwachungseinrichtung 3,4 ist am Motor 10 angeordnet und umfasst einen Permanentmagneten 4, der z.B. auf der Mitnehmerscheibe 12 angeordnet ist und der bei jeder Umdrehung der Welle 11 des Motors einen fest angeordneten magnetischen Aufnehmer 3, z.B. einen Hallsensor passiert. Der Hallsensor gibt bei jeder erfolgten Rotation der Motorwelle 11 ein elektrisches Signal an die Ansteuerelektronik 2 ab. Kommt aus irgendeinem Grund die Rotation des Motors zum Stillstand oder es treten nicht vorhersehbare Unregelmäßigkeiten auf, so erkennt dies die Ansteuerelektronik 2 und gibt ein Fehlersignal an die Webmaschinensteuerung 1. Daraufhin wird eine Fehlerroutine initiiert und, falls erforderlich, der Webprozeß gestoppt.The monitoring device 3, 4 is arranged on the motor 10 and comprises one Permanent magnet 4, e.g. is arranged on the drive plate 12 and the at each Rotation of the shaft 11 of the motor a fixed magnetic pickup 3, e.g. passed a Hall sensor. The Hall sensor inputs each time the motor shaft 11 is rotated electrical signal to the control electronics 2. For some reason the motor stops rotating or does not occur predictable irregularities, this is recognized by the control electronics 2 and inputs Error signal to the weaving machine control 1. An error routine is then initiated and, if necessary, the weaving process is stopped.

    Ein elektromotorischer Antrieb einer Fadenschere, dessen Motorwelle nach dem Stand der Technik abwechselnd vor- und rückwärts dreht, also eine Teildrehung ausführt, kann ebenfalls erfindungsgemaß überwacht werden. Eine solche Fadenschere findet als Schußfadenschere Verwendung. Bei der Steuerung der Schußfadenschere spielt allerdings das Verhältnis der Teildrehung der Motorwelle des Scherenmotors zur Drehzahl der Hauptwelle des Webmaschinenantriebs keine Rolle. An electric motor drive a thread scissors, the motor shaft according to the state of the Technology alternating forwards and backwards, i.e. performing a partial rotation, can also are monitored according to the invention. Such thread scissors are used as weft scissors Use. When controlling the weft scissors, however, the ratio of Partial rotation of the motor shaft of the scissor motor to the speed of the main shaft of the Loom drive does not matter.

    ZEICHNUNGS-LEGENDEDRAWING LEGEND

    11
    WebmaschinensteuerungWeaving machine control
    22nd
    AntriebsvorrichtungDrive device
    33rd
    Aufnehmer (Sensor)Transducer (sensor)
    3a3a
    SignalleitungSignal line
    44th
    PermanentmagnetPermanent magnet
    55
    SignalleitungSignal line
    66
    SignalleitungSignal line
    77
    FadenschereThread scissors
    88th
    feststehendes Scherenteilfixed scissors part
    8a8a
    ScherenachseScissors axis
    99
    bewegliches Scherenteilmovable scissor part
    1010th
    Motorengine
    1111
    MotorwelleMotor shaft
    1212th
    MitnehmerscheibeDrive plate
    1313
    MitnehmerstiftDriver pin
    1414
    LanglochLong hole
    1515
    RotationsrichtungDirection of rotation
    1616
    DoppelpfeilDouble arrow

    Claims (12)

    Verfahren zur Steuerung und Überwachung der Schneidfunktion einer elektromotorisch angetriebenen Fadenschere in Webmaschinen, mit einer drehangetriebenen Hauptwelle, wobei der Scherenantrieb ein elektrischer Antriebsmotor mit einerprogrammierbaren Ansteuerelektronik ist, die signalübertragend mit einer Webmaschinensteuerung in Verbindung steht, dadurch gekennzeichnet, daß beim Drehen der Motorwelle des Antriebsmotors wenigstens ein elektrisches Signal erzeugt wird, daß das elektrische Signal über die Ansteuerelektronik der Webmaschinensteuerung mitgeteilt wird und daß bei Ausbleiben des Signals der Webprozeß unterbrochen wird. Method for controlling and monitoring the cutting function of an electric motor-driven thread scissors in weaving machines with a rotary driven main shaft, the scissors drive being an electric drive motor with programmable control electronics, which is connected to a weaving machine control system in a signal-transmitting manner, characterized in that that at least one electrical signal is generated when the motor shaft of the drive motor rotates, that the electrical signal is communicated via the control electronics of the weaving machine control and that the weaving process is interrupted if the signal is absent. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Drehen der Motorwelle in einer Teil- oder Volldrehung besteht.A method according to claim 1, characterized in that the rotation of the motor shaft consists of a partial or full rotation. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß jede Teil- oder Volldrehung der Motorwelle ein elektrisches Signal erzeugt.A method according to claim 2, characterized in that each partial or full rotation of the motor shaft generates an electrical signal. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Anzahl der Volldrehungen pro Zeiteinheit der Motorwelle in einem bestimmten Verhältnis zur Drehzahl pro Zeiteinheit der Webmaschinenhauptwelle steht.A method according to claim 2, characterized in that the number of full rotations per unit time of the motor shaft is in a certain ratio to the speed per unit time of the main loom shaft. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Drehung der Motorwelle des Antriebsmotors nach jedem elektrischen Signal aufrechterhalten wird.Method according to claim 1, characterized in that the rotation of the motor shaft of the drive motor is maintained after each electrical signal. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß das Verhältnis Drehzahl der Motorwelle des Antriebsmotors zur Drehzahl der Webmaschinenhauptwelle manuell der Webmaschinensteuerung vorgebbar ist.Method according to Claim 4, characterized in that the ratio of the rotational speed of the motor shaft of the drive motor to the rotational speed of the main loom shaft can be predetermined manually for the loom control system. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß das Verhältnis Drehzahl der Motorwelle des Antriebsmotors zur Drehzahl der Webmaschinenhauptwelle automatisch musterabhängig von der Webmaschinensteuerung vorgegeben wird.Method according to Claim 4, characterized in that the ratio of the rotational speed of the motor shaft of the drive motor to the rotational speed of the main loom shaft is automatically specified by the loom control in accordance with the pattern. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Fadenschere eine Schußfadenschere ist.Method according to claim 1, characterized in that the thread scissors are weft scissors. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Fadenschere eine Fangleistenschere ist.A method according to claim 1, characterized in that the thread scissors is a safety edge scissors. Elektromotorisch angetriebene Fadenschere, insbesondere zur Verwendung als Fangleistenschere in Webmaschinen, mit einem feststehenden Scherenteil (8) und einem beweglichen Scherenteil (9), das um eine Scherenachse (8a) eine von einem Elektromotor (10) ausgehende Schneidbewegung (16) ausführt, wobei der Elektromotor (10) eine programmierbare Ansteuerelektronik (2) besitzt, die signalübertragend mit einer Webmaschinensteuerung (1) in Verbindung steht, dadurch gekennzeichnet, daß die Motorwelle (11) des Elektromotors (10) oder wenigstens eine auf der Motorwelle (11) vorhandene Vorkehrung (12) eine erste Einrichtung (4) besitzt und daß außerhalb des Rotationsbereiches der Motorwelle (11) eine zweite Einrichtung (3) vorhanden ist, und wobei beide Einrichtungen (3,4) die Drehbewegung der Motorwelle (11) überwachen.Threaded scissors driven by an electric motor, in particular for use as safety edge scissors in weaving machines, with a fixed scissor part (8) and a movable scissor part (9), which performs a cutting movement (16) starting from an electric motor (10) about a scissor axis (8a) Electric motor (10) has programmable control electronics (2), which is connected to a weaving machine control system (1) in a signal-transmitting manner, characterized in that the motor shaft (11) of the electric motor (10) or at least one precaution (17) provided on the motor shaft (11). 12) has a first device (4) and that outside the rotation range of the motor shaft (11) there is a second device (3), and both devices (3, 4) monitor the rotary movement of the motor shaft (11). Elektromotorisch angetriebene Fadenschere nach Anspruch 10, dadurch gekennzeichnet, daß die Einrichtung (3) der Empfänger einer physikalischen Größe und zugleich Sender einer elektrischen Größe ist und die Einrichtung (4) der Sender der physikalischen Größe ist.Threaded scissors driven by an electric motor according to claim 10, characterized in that the device (3) is the receiver of a physical quantity and at the same time transmitter of an electrical quantity and the device (4) is the transmitter of the physical quantity. Elektromotorisch angetriebene Fadenschere nach Anspruch 11, dadurch gekennzeichnet, daß die Einrichtung (3) signalübertragend über die Ansteuerelektronik (2) mit der Webmaschinensteuerung (1) in Verbindung steht.Threaded scissors driven by an electric motor according to claim 11, characterized in that the device (3) communicates with the weaving machine control (1) via the control electronics (2).
    EP98103545A 1997-03-27 1998-02-28 Method and device for controlling and minitoring the operation of yarn scissors driven by electric motor on looms Expired - Lifetime EP0867543B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19713089 1997-03-27
    DE19713089A DE19713089C2 (en) 1997-03-27 1997-03-27 Method and device for controlling and monitoring the cutting function of an electric motor-operated thread scissors in weaving machines

    Publications (3)

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    EP0867543A2 true EP0867543A2 (en) 1998-09-30
    EP0867543A3 EP0867543A3 (en) 1999-12-15
    EP0867543B1 EP0867543B1 (en) 2001-06-20

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    US (1) US6301519B1 (en)
    EP (1) EP0867543B1 (en)
    JP (1) JP3004624B2 (en)
    AT (1) ATE202389T1 (en)
    DE (2) DE19713089C2 (en)

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    EP1498524A2 (en) * 2003-07-17 2005-01-19 Promatech S.p.A. Electrically-controlled device for programmable weft cutting in weaving looms
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    Also Published As

    Publication number Publication date
    JPH10298852A (en) 1998-11-10
    DE19713089A1 (en) 1998-10-01
    DE59800877D1 (en) 2001-07-26
    EP0867543B1 (en) 2001-06-20
    US6301519B1 (en) 2001-10-09
    JP3004624B2 (en) 2000-01-31
    EP0867543A3 (en) 1999-12-15
    ATE202389T1 (en) 2001-07-15
    DE19713089C2 (en) 2000-07-27

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