EP0311800A2 - Method for regulating the tension of a plurality of threads in the formation of laps - Google Patents

Method for regulating the tension of a plurality of threads in the formation of laps Download PDF

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Publication number
EP0311800A2
EP0311800A2 EP88114992A EP88114992A EP0311800A2 EP 0311800 A2 EP0311800 A2 EP 0311800A2 EP 88114992 A EP88114992 A EP 88114992A EP 88114992 A EP88114992 A EP 88114992A EP 0311800 A2 EP0311800 A2 EP 0311800A2
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EP
European Patent Office
Prior art keywords
winder
speed
winding
dancer roller
pair
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
EP88114992A
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German (de)
French (fr)
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EP0311800A3 (en
EP0311800B1 (en
Inventor
Bernd Dipl.-Ing. Bösch
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Gebr Sucker and Franz Mueller & Co GmbH
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Gebr Sucker and Franz Mueller & Co GmbH
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Publication of EP0311800A2 publication Critical patent/EP0311800A2/en
Publication of EP0311800A3 publication Critical patent/EP0311800A3/en
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Publication of EP0311800B1 publication Critical patent/EP0311800B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H13/00—Details of machines of the preceding groups
    • D02H13/12—Variable-speed driving mechanisms
    • D02H13/14—Variable-speed driving mechanisms controlled automatically by tension in the warp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
    • B65H23/1955—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
    • B65H23/198—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations motor-controlled (Controlling electrical drive motors therefor)
    • 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
    • B65H2701/38—Thread sheet, e.g. sheet of parallel yarns or wires

Definitions

  • the invention relates to a method for controlling the winding tension of a family of threads when forming a winding, in which the family of threads is fed to a driven winder via a driven pair of transport rollers and a dancer roller, in which the family of threads is further loaded, preferably pneumatically, on the dancer roller on the one hand and by a Circumferential speed difference between the pair of transport rollers and the winder is tensioned, on the other hand, and the winder speed is regulated relative to the transport roller speed with the aid of a programmable logic controller (PLC control).
  • PLC control programmable logic controller
  • the textile thread sheet to be wound is fed to the actual winder with the winding tree via a pair of transport rollers and a dancer roller.
  • the winding tension of the thread sheet is generated by loading the dancer roller, in particular by pneumatic action on the dancer roller.
  • the corresponding counter tension is obtained by setting a difference in the peripheral speed of the pair of transport rollers and the winding beam.
  • the dancer roller can basically perform movements following a changing tension of the thread coulter when the winder is operating, but in order to maintain a winding tension that is as constant as possible, it is necessary to specify a static resting point or working point of the dancer roller by the mechanical construction of the system and to keep it as precisely as possible during operation , the dancer roller is therefore only allowed to be very minimal Remove amounts on the order of 1 cm or less from the area of the specified static resting point. It is therefore not suitable for a basic control or rough correction of the winder speed in relation to the delivery speed of the thread group, that is to say the transport rollers which are in principle driven independently of the winder.
  • the invention has for its object to adjust the speed of the winding drive to the growing diameter of the winding so that the dancer roller is deflected as little as possible from the predetermined static point of rest.
  • the control system should be designed in such a way that manual regulation is not necessary; in particular, it should also be possible to start a winding process independently of the winding diameter without manual presetting.
  • the solution according to the invention for the above-mentioned method for controlling the winding tension consists in that the actual diameter of the winding is determined by ultrasonic distance measurement, converted into an analog output signal and fed to an analog input of a programmable logic controller as a controlled variable or rough correction value for the winding speed and that the signal of an analog dancer roll control with PID behavior is additionally supplied to the speed setpoint signal of the winding drive.
  • the actual diameter of the roll By scanning the actual diameter of the roll according to the invention with the aid of an ultrasonic range finder with an analog output signal and by forwarding This signal to a programmable logic controller enables a rough adjustment of the speed of the winding drive to the current winding diameter. If necessary, the actual diameter is determined from the ultrasound signal, checked for plausibility (e.g. a question is asked as to whether the winder is empty or there is a faulty measurement) and processed to an average. A pre-control value for the winder speed is calculated from the current diameter found in this way and the target value for the material speed.
  • plausibility e.g. a question is asked as to whether the winder is empty or there is a faulty measurement
  • the aforementioned rough adjustment of winder speed and winder diameter in relation to the delivery speed of the thread sheet is supplemented according to the invention by a fine adjustment.
  • the dancer roller which can be deflected from its static point of rest to a small extent during operation, serves this purpose.
  • the residual errors remaining for fine tuning as well as dynamic deviations and out-of-roundness of the growing reel, but also changes in the elasticity of the wound material, are eliminated by an analogous position control of the dancer roll with PID behavior by adding the signal of this control additively to the speed pre-control determined in the above-mentioned coarse adjustment.
  • Setpoint signal of the winding drive is supplied.
  • the textile thread sheet 1 to be wound is passed in the direction of the arrow 2 via a pair of transport rollers 3 and a dancer roller 4 to a winding 5 which is being formed in a winder which is denoted overall by 6.
  • the winding tension FW of the thread sheet 1 is generated by acting on the dancer roller 4 with the aid of a pneumatic cylinder 7.
  • the associated counter-voltage is obtained by setting a difference between the delivery speed of the pair of transport rollers 3 and the peripheral speed of the winding 5 that is being formed.
  • the pair of transport rollers has a drive 8, in particular a controlled direct current motor delivering an output speed n1.
  • the winder 6 has a drive 8 which is independent of the drive 8 of the pair of transport rollers, in particular also a controlled DC motor which supplies the output speed n2.
  • the actual diameter of the winding 5 growing in the winder 6 is scanned with the aid of an ultrasound range finder or ultrasound sensor 10.
  • This ultrasonic sensor 10 is intended to conduct an analog output signal on line 11 to a programmable logic controller (PLC), designated as a whole at 12, at its input 13. From the distance signal from the sensor 10, the actual diameter of the winding 5 is digitized in the PLC controller 12 in an analog / digital converter 14 and as the mean value of the actual diameter for the rough adjustment of a pilot control setpoint 16 Ratio of the speed of the transport roller pair 3 and the winder 6 used.
  • PLC programmable logic controller
  • a master setpoint is specified at an input 17 of the PLC controller 12 as the speed of the drive 8 of the pair of transport rollers 3.
  • the digitized master setpoint is fed via a line 20 to the control part 21 of the drive 8 via a digital / analog converter 18 and an output 19 of the PLC control 12.
  • the setpoint is fed from the input 17 via the n1 / n2 computer in the pilot control setpoint part 16 to an analog-digital converter 22 and via an output 23 of the PLC controller 12 and a line 24 to the control part 25 of the drive 9 of the winder 6.
  • the speed of the winder drive 9 is adapted to the growing diameter of the winder 5 in such a way that the dancer roller 4 is deflected as little as possible from its predetermined static rest point. Since the current winding diameter constantly enters the speed ratio n1 / n2 via the PLC control 12, the winding process can be started with any winding diameter without mechanical presetting.
  • the dancer roller 4 is usually mounted on the free end of an arm 26, while the arm 26 can be moved back and forth in the direction of the arrow 27 about a pivot bearing 28.
  • the deflection position by the angle w from the static rest point shown is detected by a potentiometer 29.
  • the potentiometer signal is fed to a PID controller 31 via a power 30.
  • the output signal of the PID controller 31 is superimposed on the analog signal of the pilot control setpoint 16 coming from the output 23 of the PLC control 12 in such a way that possible deflections of the dancer roller 4 are regulated to a minimum by an angle w in the direction of arrow 27 from the predetermined rest position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Warping, Beaming, Or Leasing (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Unwinding Of Filamentary Materials (AREA)

Abstract

In the method for regulating the winding tension of a plurality of threads for the formation of a lap, in which the plurality of threads is fed to a driven winder via a pair of driven transport rollers and a dancing roller, the speed of the winder drive can be so adapted to the increasing diameter of the lap that the dancing roller is deflected from its static point of rest only to a minimum extent. For this, there is superposed on a rough adjustment of the speeds of the transport rollers and winder a fine adjustment derived from the dancing roller via a PID controller. …<IMAGE>…

Description

Die Erfindung betrifft ein Verfahren zum Steuern der Wickelspannung einer Fadenschar beim Bilden eines Wickels, bei dem die Fadenschar über ein angetriebenes Transportwalzenpaar und eine Tänzerwalze einem angetrie­benen Wickler zugeführt wird, bei dem ferner die Faden­schar durch, vorzugsweise pneumatisches, Belasten der Tänzerwalze einerseits sowie durch eine Umfangsgeschwin­digkeitsdifferenz von Transportwalzenpaar und Wickler andererseits gespannt wird und bei dem die Wicklerdreh­zahl relativ zur Transportwalzendrehzahl mit Hilfe einer speicherprogrammierbaren Steuerung (SPS-Steuerung) gere­gelt wird.The invention relates to a method for controlling the winding tension of a family of threads when forming a winding, in which the family of threads is fed to a driven winder via a driven pair of transport rollers and a dancer roller, in which the family of threads is further loaded, preferably pneumatically, on the dancer roller on the one hand and by a Circumferential speed difference between the pair of transport rollers and the winder is tensioned, on the other hand, and the winder speed is regulated relative to the transport roller speed with the aid of a programmable logic controller (PLC control).

Beim Bilden von Kettbäumen, Schärbäumen oder dergleichen wird die aufzuwickelnde textile Fadenschar über ein Transportwalzenpaar und eine Tänzerwalze dem eigentlichen Wickler mit dem Wickelbaum zugeführt. Die Aufwickelspannung der Fadenschar wird durch Belastung der Tänzerwalze, insbesondere durch pneumatisches Beaufschlagen der Tänzerwalze, erzeugt. Die entsprechen­de Gegenspannung wird durch Einstellen einer Differenz der Umfangsgeschwindigkeit von Transportwalzenpaar und Wickelbaum erhalten.When forming warp beams, warp beams or the like, the textile thread sheet to be wound is fed to the actual winder with the winding tree via a pair of transport rollers and a dancer roller. The winding tension of the thread sheet is generated by loading the dancer roller, in particular by pneumatic action on the dancer roller. The corresponding counter tension is obtained by setting a difference in the peripheral speed of the pair of transport rollers and the winding beam.

Die Tänzerwalze kann zwar bei Betrieb des Wicklers grundsätzlich einer wechselnden Spannung der Fadenschar folgend Bewegungen ausführen, zum Einhalten einer mög­lichst konstanten Wickelspannung ist es aber erforder­lich, einen statischen Ruhepunkt bzw. Arbeitspunkt der Tänzerwalze durch die mechanische Konstruktion der Anla­ge vorzugeben und bei Betrieb möglichst genau einzuhal­ten, die Tänzerwalze darf sich also nur um ganz minimale Beträge in der Größenordnung von höchstens 1 cm, aus dem Bereich des vorgegebenen statischen Ruhepunkts entfer­nen. Sie ist daher für eine grundsätzliche Regelung bzw. Grob-Korrektur der Wicklerdrehzahl in Bezug auf die Lie­fergeschwindigkeit der Fadenschar, das heißt der im Prinzip unabhängig vom Wickler angetriebenen Transportwalzen, nicht geeignet.The dancer roller can basically perform movements following a changing tension of the thread coulter when the winder is operating, but in order to maintain a winding tension that is as constant as possible, it is necessary to specify a static resting point or working point of the dancer roller by the mechanical construction of the system and to keep it as precisely as possible during operation , the dancer roller is therefore only allowed to be very minimal Remove amounts on the order of 1 cm or less from the area of the specified static resting point. It is therefore not suitable for a basic control or rough correction of the winder speed in relation to the delivery speed of the thread group, that is to say the transport rollers which are in principle driven independently of the winder.

Der Erfindung liegt die Aufgabe zugrunde, die Drehzahl des Wickelantriebs auf den wachsenden Durchmesser des Wickels so abzustimmen, daß die Tänzerwalze möglichst wenig aus dem vorgegebenen statischen Ruhepunkt ausge­lenkt wird. Die Steuerung soll so ausgebildet werden, daß eine manuelle Regulierung nicht erforderlich ist, insbesondere soll auch der Start eines Wickelvorgangs unabhängig vom Wickeldurchmesser ohne manuelle Vorein­stellung möglich sein.The invention has for its object to adjust the speed of the winding drive to the growing diameter of the winding so that the dancer roller is deflected as little as possible from the predetermined static point of rest. The control system should be designed in such a way that manual regulation is not necessary; in particular, it should also be possible to start a winding process independently of the winding diameter without manual presetting.

Die erfindungsgemäße Lösung besteht für das eingangs ge­nannte Verfahren zum Steuern der Wickelspannung darin, daß der Ist-Durchmesser des Wickels durch Ultraschall­-Entfernungsmessung ermittelt, in ein analoges Ausgangs­signal umgewandelt sowie als Regelgröße bzw. Grob-Kor­rekturwert der Wicklerdrehzahl einem Analogeingang einer speicherprogrammierbaren Steuerung zugeführt wird und daß das Signal einer analogen Tänzerwalzenregelung mit PID-Verhalten additiv dem Drehzahl-Sollwert-Signal des Wickelantriebs zugeführt wird.The solution according to the invention for the above-mentioned method for controlling the winding tension consists in that the actual diameter of the winding is determined by ultrasonic distance measurement, converted into an analog output signal and fed to an analog input of a programmable logic controller as a controlled variable or rough correction value for the winding speed and that the signal of an analog dancer roll control with PID behavior is additionally supplied to the speed setpoint signal of the winding drive.

Durch das erfindungsgemäße Abtasten des Ist-Durchmessers des Wickels mit Hilfe eines Ultraschall-Entfernungsmes­sers mit analogem Ausgangssignal und durch Weiterleitung dieses Signals an eine speicherprogrammierbare Steuerung wird eine Grobabstimmung der Drehzahl des Wickelantriebs auf den aktuellen Wickeldurchmesser ermöglicht. Gegebe­nenfalls wird der Ist-Durchmesser aus dem Ultraschall­-Signal ermittelt, auf Plausibilität überprüft (z. B. wird gefragt, ob der Wickler leer ist oder eine Fehlmes­sung vorliegt) und zu einem Mittelwert verarbeitet. Aus dem so gefundenen aktuellen Durchmesser und dem Sollwert für die Materialgeschwindigkeit wird ein Vorsteuerwert für die Wicklerdrehzahl errechnet.By scanning the actual diameter of the roll according to the invention with the aid of an ultrasonic range finder with an analog output signal and by forwarding This signal to a programmable logic controller enables a rough adjustment of the speed of the winding drive to the current winding diameter. If necessary, the actual diameter is determined from the ultrasound signal, checked for plausibility (e.g. a question is asked as to whether the winder is empty or there is a faulty measurement) and processed to an average. A pre-control value for the winder speed is calculated from the current diameter found in this way and the target value for the material speed.

Die vorgenannte Grobabstimmung von Wicklerdrehzahl und Wicklerdurchmesser in Bezug auf die Liefergeschwindig­keit der Fadenschar wird erfindungsgemäß durch eine Feinabstimmung ergänzt. Hierzu dient die wenig, aber doch in geringem Maße bei Betrieb aus ihrem statischen Ruhepunkt auszulenkende Tänzerwalze. Der für eine Fein­abstimmung verbleibende Restfehler sowie dynamische Ab­weichungen und Unrundheiten des wachsenden Wickels, aber auch Elastizitätsveränderungen des gewickelten Materials werden durch eine analoge Lagenregelung der Tänzerwalze mit PID-Verhalten beseitigt, indem das Signal dieser Re­gelung additiv dem bei der vorgenannten Grobabstimmung ermittelten Drehzahl-Vorsteuer-Sollwert-Signal des Wickelantriebs zugeführt wird.The aforementioned rough adjustment of winder speed and winder diameter in relation to the delivery speed of the thread sheet is supplemented according to the invention by a fine adjustment. The dancer roller, which can be deflected from its static point of rest to a small extent during operation, serves this purpose. The residual errors remaining for fine tuning as well as dynamic deviations and out-of-roundness of the growing reel, but also changes in the elasticity of the wound material, are eliminated by an analogous position control of the dancer roll with PID behavior by adding the signal of this control additively to the speed pre-control determined in the above-mentioned coarse adjustment. Setpoint signal of the winding drive is supplied.

Anhand der schematischen Darstellung eines Wirkschalt­bildes als Ausführungsbeispiel einer Wickelsteuerung mit Ultraschall-Durchmesser-Erfassung werden Einzelheiten der Erfindung erläutert.Details of the invention are explained on the basis of the schematic representation of an effective circuit diagram as an exemplary embodiment of a winding control with ultrasonic diameter detection.

Die aufzuwickelnde textile Fadenschar 1 wird in Pfeil­richtung 2 über ein Transportwalzenpaar 3 und eine Tän­zerwalze 4 auf einen sich bildenden Wickel 5 eines ins­gesamt mit 6 bezeichneten Wicklers geleitet. Die Auf­wickel-Spannung FW der Fadenschar 1 wird durch Beauf­schlagung der Tänzerwalze 4 mit Hilfe eines Pneumatik­zylinders 7 erzeugt. Die zugehörige Gegenspannung wird durch Einstellung einer Differenz der Liefergeschwindig­keit des Transportwalzenpaars 3 und der Umfangsgeschwin­digkeit des sich bildenden Wickels 5 erhalten Das Transportwalzenpaar besitzt einen Antrieb 8, insbesondere einen eine Ausgangsdrehzahl n1 liefernden gesteuerten Gleichstrommotor. Der Wickler 6 besitzt ei­nen vom Antrieb 8 des Transportwalzenpaars unabhängigen Antrieb 8, insbesondere ebenfalls einen gesteuerten Gleichstrommotor, der die Ausgangsdrehzahl n2 liefert. Der Ist-Durchmesser des im Wickler 6 wachsenden Wickels 5 wird mit Hilfe eines Ultraschall-Entfernungsmessers bzw. Ultraschall-Sensors 10 abgetastet. Dieser Ultra­schall-Sensor 10 soll ein analoges Ausgangssignal auf der Leitung 11 zu einer insgesamt mit 12 bezeichneten speicherprogrammierbaren Steuerung (SPS) an deren Ein­gang 13 leiten. Aus dem Entfernungssignal des Sensors 10 wird in der SPS-Steuerung 12 der Ist-Durchmesser des Wickels 5 in einem Analog/Digital-Wandler 14 digitalisiert und als Mittelwert des Ist-Durchmessers zur Grobabstimmung eines Vorsteuersollwertes 16 des Verhältnisses der Drehzahl des Transportwalzenpaars 3 und des Wicklers 6 verwendet.The textile thread sheet 1 to be wound is passed in the direction of the arrow 2 via a pair of transport rollers 3 and a dancer roller 4 to a winding 5 which is being formed in a winder which is denoted overall by 6. The winding tension FW of the thread sheet 1 is generated by acting on the dancer roller 4 with the aid of a pneumatic cylinder 7. The associated counter-voltage is obtained by setting a difference between the delivery speed of the pair of transport rollers 3 and the peripheral speed of the winding 5 that is being formed. The pair of transport rollers has a drive 8, in particular a controlled direct current motor delivering an output speed n1. The winder 6 has a drive 8 which is independent of the drive 8 of the pair of transport rollers, in particular also a controlled DC motor which supplies the output speed n2. The actual diameter of the winding 5 growing in the winder 6 is scanned with the aid of an ultrasound range finder or ultrasound sensor 10. This ultrasonic sensor 10 is intended to conduct an analog output signal on line 11 to a programmable logic controller (PLC), designated as a whole at 12, at its input 13. From the distance signal from the sensor 10, the actual diameter of the winding 5 is digitized in the PLC controller 12 in an analog / digital converter 14 and as the mean value of the actual diameter for the rough adjustment of a pilot control setpoint 16 Ratio of the speed of the transport roller pair 3 and the winder 6 used.

Als Drehzahl des Antriebs 8 des Transportwalzenpaars 3 wird ein Leitsollwert an einer Eingabe 17 der SPS-Steue­rung 12 vorgegeben. Der digitalisierte Leitsollwert wird über einen Digital/Analog-Wandler 18 und einen Ausgang 19 der SPS-Steuerung 12 über eine Leitung 20 dem Steuerteil 21 des Antriebs 8 zugeführt. Zugleich wird der Sollwert von der Eingabe 17 über den n1/n2-Rechner im Vorsteuersollwertteil 16 einem Analog-Digital-Wandler 22 und über einen Ausgang 23 der SPS-Steuerung 12 sowie eine Leitung 24 dem Steuerteil 25 des Antriebs 9 des Wicklers 6 zugeführt.A master setpoint is specified at an input 17 of the PLC controller 12 as the speed of the drive 8 of the pair of transport rollers 3. The digitized master setpoint is fed via a line 20 to the control part 21 of the drive 8 via a digital / analog converter 18 and an output 19 of the PLC control 12. At the same time, the setpoint is fed from the input 17 via the n1 / n2 computer in the pilot control setpoint part 16 to an analog-digital converter 22 and via an output 23 of the PLC controller 12 and a line 24 to the control part 25 of the drive 9 of the winder 6.

Da der Vorsteuersollwert 16 ständig durch die von dem Ultraschall-Sensor 10 kommenden Signale entsprechend dem aktuellen Wickeldurchmesser korrigiert werden, wird schon auf diese einfache Weise eine recht gute Anpassung der Wicklerdrehzahl n2 an die Transportwalzendrehzahl n1 dem jeweilig gewickelten Material entsprechend erreicht.Since the pre-control setpoint 16 is constantly corrected by the signals coming from the ultrasonic sensor 10 in accordance with the current winding diameter, a quite good adaptation of the winder speed n2 to the transport roller speed n1 corresponding to the respective wound material is achieved in this simple manner.

Bei der vorgenannten Grob-Abstimmung wird die Drehzahl des Wicklerantriebs 9 so dem wachsenden Durchmesser des Wickels 5 angepaßt, daß die Tänzerwalze 4 möglichst we­nig aus ihrem vorgegebenen statischen Ruhepunkt ausge­lenkt wird. Da der aktuelle Wickeldurchmesser ständig über die SPS-Steuerung 12 in das Drehzahlverhältnis n1/n2 eingeht, kann der Wickelvorgang bei jedem Wickeldurchmesser ohne mechanische Voreinstellung ge­startet werden.In the aforementioned coarse tuning, the speed of the winder drive 9 is adapted to the growing diameter of the winder 5 in such a way that the dancer roller 4 is deflected as little as possible from its predetermined static rest point. Since the current winding diameter constantly enters the speed ratio n1 / n2 via the PLC control 12, the winding process can be started with any winding diameter without mechanical presetting.

Die Tänzerwalze 4 wird üblich am freien Ende eines Arms 26 gelagert, während der Arm 26 in Pfeilrichtung 27 um ein Schwenklager 28 hin und her zu bewegen ist. Die Aus­lenkposition um den Winkel w aus dem dargestellten sta­tischen Ruhepunkt wird über ein Potentiometer 29 erfaßt. Das Potentiometersignal wird über eine Leistung 30 einem PID-Regler 31 zugeführt. Das Ausgangssignal des PID-Reg­lers 31 wird dem vom Ausgang 23 der SPS-Steuerung 12 kommenden Analogsignal des Vorsteuer-Sollwertes 16 so überlagert, daß eventuelle Auslenkungen der Tänzerwalze 4 um einen Winkel w in Pfeilrichtung 27 aus der vorgegebenen Ruheposition auf ein Minimum geregelt wer­den. Auf diese Weise können nach der Grob-Abstimmung durch den Ultraschall-Sensor 10 noch verbleibende Restfehler sowie dynamische Abweichungen, die von Un­rundheiten des Wickels 5 oder von Elastizitätsschwankun­gen der Fadenschar 1 herrühren können, wird durch die analoge PID-Tänzerlagenregelung beseitigt, wenn das Sig­nal des PID-Reglers 31 additiv dem Drehzahl-Sollwert-­-Signal des Vorsteuer-Sollwert-Bildners 16 zugeführt wird.The dancer roller 4 is usually mounted on the free end of an arm 26, while the arm 26 can be moved back and forth in the direction of the arrow 27 about a pivot bearing 28. The deflection position by the angle w from the static rest point shown is detected by a potentiometer 29. The potentiometer signal is fed to a PID controller 31 via a power 30. The output signal of the PID controller 31 is superimposed on the analog signal of the pilot control setpoint 16 coming from the output 23 of the PLC control 12 in such a way that possible deflections of the dancer roller 4 are regulated to a minimum by an angle w in the direction of arrow 27 from the predetermined rest position. In this way, after the coarse adjustment by the ultrasonic sensor 10, remaining residual errors and dynamic deviations, which can result from out-of-roundness of the winding 5 or from fluctuations in the elasticity of the thread sheet 1, are eliminated by the analog PID dancer position control when the signal of the PID controller 31 is added to the speed setpoint signal of the pilot setpoint generator 16.

BezugszeichenlisteReference symbol list

  • 1 = Fadenschar1 = thread group
  • 2 = Pfeil2 = arrow
  • 3 = Transportwalzenpaar3 = pair of transport rollers
  • 4 = Tänzerwalze4 = dancer roller
  • 5 = Wickel5 = wrap
  • 6 = Wickler6 = winder
  • 7 = Pneumatikzylinder7 = pneumatic cylinder
  • 8 = Antrieb (3)8 = drive (3)
  • 9 = Antrieb (6)9 = drive (6)
  • 10 = Ultraschall-Sensor10 = ultrasonic sensor
  • 11 = Leitung11 = line
  • 12 = SPS-Steuerung12 = PLC control
  • 13 = Analogeingang (12)13 = analog input (12)
  • 14 = Analog/Digital-Wandler14 = analog / digital converter
  • 15 = Mittlerer Ist-Durchmesser15 = mean actual diameter
  • 16 = Vorsteuer-Sollwert n1/n216 = pilot control setpoint n1 / n2
  • 17 = Eingabe (12)17 = input (12)
  • 18 = Digital/Analog-Wandler18 = digital / analog converter
  • 19 = Analog-Ausgang (12)19 = analog output (12)
  • 20 = Leitung20 = line
  • 21 = Steuerteil (8)21 = control section (8)
  • 22 = Analog/Digital-Ausgang (12)22 = analog / digital output (12)
  • 23 = Analog-Ausgang (12)23 = analog output (12)
  • 24 = Leitung24 = line
  • 25 = Steuerteil (9)25 = control section (9)
  • 26 = Arm (4)26 = arm (4)
  • 27 = Pfeil27 = arrow
  • 28 = Schwenklage28 = swivel position
  • 29 = Potentiometer29 = potentiometer
  • 30 = Leitung30 = line
  • 31 = PID-Regler31 = PID controller

Claims (2)

1. Verfahren zum Steuern der Wickelspannung einer Faden­schar (1) beim Bilden eines Wickels (5), bei dem die Fa­denschar (1) über ein angetriebenes Transportwalzenpaar (3) und eine Tänzerwalze (4) einem angetriebenen Wickler (6) zugeführt wird, bei dem ferner die Fadenschar (1) durch, vorzugsweise pneumatisches, Belasten der Tänzer­walze (4) einerseits sowie durch eine Umfangsgeschwin­digkeitsdifferenz von Transportwalzenpaar (3) und Wick­ler (6) andererseits gespannt wird und bei dem die Wick­lerdrehzahl (n2) relativ zur Transportwalzendrehzahl (n1) mit Hilfe einer speicherprogrammierbaren Steuerung geregelt wird,
dadurch gekennzeichnet,
daß der Ist-Durchmesser des im Wickler (6) gebildeten Wickels (5) durch Ultraschall-Entfernungsmessung (10) analog ermittelt sowie als Regelgröße bzw. Grob-Korrek­turwert des Drehzahl-Sollwert-Signals des Wickleran­triebs (6) einem Analogeingang (13) der speicherprogram­mierbaren Steuerung (12) zugeführt wird und daß ein an einer analogen Tänzerwalzenregelung mit PID-Verhalten erhaltenes Signal zur Feinabstimmung zu dem Drehzahl­-Sollwert-Signal des Wickelantriebs (6) addiert wird.1. A method for controlling the winding tension of a thread sheet (1) when forming a roll (5), in which the thread sheet (1) via a driven transport roller pair (3) and a dancer roller (4) is fed to a driven winder (6) which further tensions the thread sheet (1) by, preferably pneumatically, loading the dancer roller (4) on the one hand and by a circumferential speed difference between the pair of transport rollers (3) and the winder (6) on the other hand and in which the winder speed (n2) relative to the transport roller speed (n1) is regulated using a programmable logic controller,
characterized,
that the actual diameter of the winding (5) formed in the winder (6) by ultrasonic distance measurement (10) determined analogously and as a controlled variable or rough correction value of the speed setpoint signal of the winder drive (6) to an analog input (13) of the programmable logic controller (12) and that a signal obtained on an analog dancer roller control with PID behavior for fine tuning the speed setpoint signal of the winding drive (6) is added. 2. Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß die Feinabstimmung so getroffen wird, daß ein für die jeweilige mechanische Konstruktion typischer Ruhepunkt der Tänzerwalze (4) eingehalten wird.2. The method according to claim 1,
characterized,
that the fine tuning is made so that a typical resting point for the respective mechanical construction of the dancer roller (4) is maintained.
EP88114992A 1987-10-12 1988-09-14 Method for regulating the tension of a plurality of threads in the formation of laps Expired - Lifetime EP0311800B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873734433 DE3734433A1 (en) 1987-10-12 1987-10-12 METHOD FOR CONTROLLING THE WIND TENSION OF A THREAD SHAFT WHILE FORMING A WIND
DE3734433 1987-10-12

Publications (3)

Publication Number Publication Date
EP0311800A2 true EP0311800A2 (en) 1989-04-19
EP0311800A3 EP0311800A3 (en) 1989-11-29
EP0311800B1 EP0311800B1 (en) 1992-06-17

Family

ID=6338126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114992A Expired - Lifetime EP0311800B1 (en) 1987-10-12 1988-09-14 Method for regulating the tension of a plurality of threads in the formation of laps

Country Status (4)

Country Link
US (1) US4966333A (en)
EP (1) EP0311800B1 (en)
JP (1) JPH01133871A (en)
DE (2) DE3734433A1 (en)

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EP0442030A1 (en) * 1990-01-26 1991-08-21 McCOY-ELLISON, INC. Apparatus for controlled braking of a textile material engaging roll
ES2062957A2 (en) * 1992-06-30 1994-12-16 Lucio Grilli Surface preparation for circular workpieces - using grinding bands reciprocally moved between two sets of reels and with band tension control
CN102275771A (en) * 2011-07-19 2011-12-14 吴江金时利织造有限公司 Yarn selection mechanism
EP2371748A3 (en) * 2010-04-03 2012-03-28 Robert Bosch GmbH Method for determining at least one regulating parameter of a dancer controlling element
CN109292510A (en) * 2018-09-21 2019-02-01 航宸石家庄新材料科技有限公司 A kind of broadening carbon fiber braider constant tension coiling device

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JP2900057B2 (en) * 1990-04-12 1999-06-02 日本マイヤー株式会社 Knitting yarn detection method for warp knitting machine
US5098029A (en) * 1990-06-01 1992-03-24 Eastman Kodak Company Apparatus and method for minimizing web cinching during unwinding of rolls of web materials of indeterminate length
US5160098A (en) * 1990-11-21 1992-11-03 Durkos Larry G Tension control system and method
EP0582826B1 (en) * 1992-07-13 1995-10-04 Siemens Aktiengesellschaft Monitoring device for the drive of an uncoiler
WO1995033671A2 (en) * 1994-06-06 1995-12-14 Barmag-Spinnzwirn Gmbh Winding machine for yarn at constant speed
DE19537325C1 (en) * 1995-10-06 1996-11-28 Memminger Iro Gmbh Yarn feed tension control on flat bed knitting machine
DE19538478A1 (en) * 1995-10-16 1997-04-17 Sucker Mueller Hacoba Gmbh Method and device for winding a group of threads
US5791542A (en) * 1996-07-17 1998-08-11 Lawson-Hemphill, Inc. Yarn test system which moves yarn at high speed under constant, adjustable tension
US5825374A (en) * 1997-03-12 1998-10-20 Raster Graphics, Inc. Apparatus and method for advancing a web
JP3603031B2 (en) * 2001-01-31 2004-12-15 株式会社島精機製作所 Yarn feeding device
AU2003248087A1 (en) * 2002-07-24 2004-02-09 Shima Seiki Manufacturing Limited Yarn feeding device for flat knitting machine
ES2226582B1 (en) * 2004-06-04 2006-07-01 Vives Vidal, Vivesa, S.A. PROCEDURE FOR THE MANUFACTURE OF A WRAPPING FABRIC FOR A CLOTHING CLOTHING AND ELASTIC FABRIC OBTAINED.
DE102004052735A1 (en) * 2004-10-30 2006-05-04 Moenus Textilmaschinen Gmbh Method of picking and sticking device
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JP5624947B2 (en) * 2011-06-03 2014-11-12 富士フイルム株式会社 Magnetic tape winding method, magnetic tape winding device, and magnetic tape cartridge manufacturing method
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ES2062957A2 (en) * 1992-06-30 1994-12-16 Lucio Grilli Surface preparation for circular workpieces - using grinding bands reciprocally moved between two sets of reels and with band tension control
EP2371748A3 (en) * 2010-04-03 2012-03-28 Robert Bosch GmbH Method for determining at least one regulating parameter of a dancer controlling element
CN102275771A (en) * 2011-07-19 2011-12-14 吴江金时利织造有限公司 Yarn selection mechanism
CN109292510A (en) * 2018-09-21 2019-02-01 航宸石家庄新材料科技有限公司 A kind of broadening carbon fiber braider constant tension coiling device

Also Published As

Publication number Publication date
EP0311800A3 (en) 1989-11-29
DE3734433A1 (en) 1989-04-20
DE3872146D1 (en) 1992-07-23
EP0311800B1 (en) 1992-06-17
US4966333A (en) 1990-10-30
JPH01133871A (en) 1989-05-25

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