EP0417232B1 - Web travel controller - Google Patents

Web travel controller Download PDF

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Publication number
EP0417232B1
EP0417232B1 EP90904758A EP90904758A EP0417232B1 EP 0417232 B1 EP0417232 B1 EP 0417232B1 EP 90904758 A EP90904758 A EP 90904758A EP 90904758 A EP90904758 A EP 90904758A EP 0417232 B1 EP0417232 B1 EP 0417232B1
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EP
European Patent Office
Prior art keywords
web
roller
measurement
braking
guide
Prior art date
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Expired - Lifetime
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EP90904758A
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German (de)
French (fr)
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EP0417232A1 (en
Inventor
Heinrich Niemann
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Erhardt and Leimer GmbH
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Erhardt and Leimer GmbH
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Application filed by Erhardt and Leimer GmbH filed Critical Erhardt and Leimer GmbH
Priority to AT90904758T priority Critical patent/ATE97634T1/en
Publication of EP0417232A1 publication Critical patent/EP0417232A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00Registering, tensioning, smoothing or guiding webs
    • B65H23/02Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032Controlling transverse register of web
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/10Rollers
    • B65H2404/15Roller assembly, particular roller arrangement
    • B65H2404/152Arrangement of roller on a movable frame
    • B65H2404/1521Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
    • B65H2404/15212Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis rotating, pivoting or oscillating around an axis perpendicular to the roller axis

Definitions

  • GB-A-2 053 856 discloses a web tension controller for a web running from a supply roll, in which a roller, which is wrapped by the web deflected by 180 ° from the web running plane, perpendicular to the web running plane through the web train against a predetermined one Force is moved up and down. Depending on the roller position, which changes with the web tension, a brake on the axis of the supply roll is activated in order to achieve a constant tension of the web regardless of the diameter of the stock roll and / or the unwinding speed of the web. A correction of lateral path deviations is not possible with this known path controller.
  • the invention is based on the task of enabling a web guider of the type mentioned at the outset to also regulate lateral web deviations in addition to precisely regulating the web tension in the running web.
  • the brake roller exerts a more or less large braking force on the web of material that wraps around the brake roller, thereby influencing the web tension.
  • the web tension is detected on the measuring roller and in turn serves to actuate the braking device via the controller, so that there is a closed control loop for the size of the web tension.
  • the desired web train can be preselected in the controller using the setpoint adjuster. Since this web tension control only requires the wrapping of the brake roller and the measuring roller, the web tension control according to the invention for the web is very gentle on the edges and the surface, so that even sensitive webs can be controlled with the web guider according to the invention.
  • the measuring roller is elastically resiliently mounted in a force measurement bearing transverse to the roller axis and in this direction the transducers absorb the force resulting from the web train on the measuring roller axis.
  • the transducers are expediently arranged strain gauges on elastic bearing pieces of the measuring roller bearings.
  • the web guider shown in the drawing for a web generally denoted by 1 has guide rollers 2.1, 2.2 which can be freely rotated about parallel axes 3 and over whose lateral surface the web runs.
  • the guide rollers are arranged in a rotating frame 4 which is rotatably mounted on a fixed frame 5 about an imaginary axis 6 and can be rotated about this axis 6 by means of a servomotor 7.
  • the servomotor 7 is depending on the lateral web offset behind the second in the rotating frame 4 guide roller 2.2 by means of one on the lateral course of the web edge or a guide line on the Warehouse responsive storage sensor 8, in the exemplary embodiment, an opto-electrical sensor from an infrared transmitter 8.1 and infrared receiver 8.2 controlled.
  • the rotating frame 4 is mounted on the fixed frame 5 by means of arch guides 4 ', not shown in detail, as described in detail in DE 31 25 852 C1, for example.
  • At least one further deflecting roller 9 with a fixed axis of rotation is arranged in front of and behind the first or last guide roller 2.1, 2.2 of the rotating frame 4.
  • the deflecting rollers 9 therefore do not take part in the adjusting movements of the rotating frame 4. They deflect the web 1 over the guide rollers 2.1, 2.2 of the rotating frame 4 in a direction perpendicular to the guide plane 10 between the two guide rollers.
  • the output signals of the position sensor 8 are converted into control commands for the servomotor 7 of the rotating frame 4 in a known and therefore not shown and explained manner.
  • a brake roller 11 is provided in the rotating frame 4 between the guide rollers 2.1, 2.2 with these guide rollers parallel to the axis and outside of their guide plane 10, which is wrapped around and dragged by the web.
  • the brake roller 11 has a brake device 12 actuated by an actuator, so that depending on the Brake roller 11 braking torque exerted by the braking device 12 of the web train in which the web 1 dragging the brake roller 11 can be influenced.
  • a force measuring device which determines the web train, the measured value signals of which control the actuator of the braking device 12 via a controller 13 with setpoint adjustment.
  • the measured value signals of the measured value sensor 15 are fed to a measuring amplifier 17 with a digital display, to which a regulator unit 18 is connected, which is guided by a setpoint adjuster 19.
  • the controller unit 18 contains amplifier, summing and delay elements and works with its output on the signal converter 16, which is connected with its pneumatic part to a pneumatic supply unit 20 and with its output 21 to the pneumatically actuated disc brake 12.

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  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

The web travel controller described comprises a rotating frame (4) with two guide rollers (2.1, 2.2). The lateral motion of the web of material downstream of the second guide roller is monitored by a position sensor (8) whose output signal is converted into control commands for a servo motor (7) which turns the rotating frame (4). In the rotating frame (4), between the guide rollers (2.1, 2.2), is a brake roller with a braking device (12), the web passing round the brake roller (11) and entraining it. A dynamometric roller (14), mounted downstream of the brake roller (11), which measures the tension in the web in the direction of travel of the web, is used to generate measurement signals to control the braking device (12) via a controller (13) with reference-value setting facilities (19).

Description

Die Erfindung betrifft einen Bahnlaufregler zum Ausregeln seitlicher Abweichungen einer laufenden Warenbahn von einer Soll-Lage mit einem Drehrahmen und zwei darin parallelachsig mit Abstand voneinander gelagerten Führungswalzen, zwischen denen die Warenbahn verläuft und an denen die Warenbahn jeweils um im wesentlichen 90° aus der von beiden Führungswalzen gebildeten Führungsebene umgelenkt ist, und mit einem den seitlichen Verlauf der Warenbahn hinter der im Lauf der Warenbahn zweiten Führungswalze überwachenden Lagesensor, dessen Ausgangssignal in Steuerbefehle für einen den Drehrahmen drehenden Stellmotor umgesetzt werden.The invention relates to a web guider for correcting lateral deviations of a running web from a desired position with a rotating frame and two guide rollers mounted therein with parallel axes and at a distance from one another, between which the web runs and on which the web is in each case essentially 90 ° from the two Guide rollers formed guide plane is deflected, and with a position sensor monitoring the lateral course of the web behind the second guide roller in the course of the web, the output signal of which are converted into control commands for a servomotor rotating the rotating frame.

Ein Bahnlaufregler mit diesen Merkmalen ist aus DE-A 35 35 011 bekannt. Ein Drehrahmen ist an einem stationären Gestell gelagert und um eine Achse drehbar, die senkrecht steht auf der Ebene der zwischen den beiden Führungswalzen verlaufenden Warenbahn. Der Bahnlaufregler ist eine selbstständig arbeitende Regeleinheit, die an beliebiger Stelle in den Warenbahnlauf eingefügt werden kann. Seitliche Abweichungen der laufenden Warenbahn können daher an beliebiger Stelle des Warenbahnumlaufs ausgeregelt werden. Auch besteht die Möglichkeit, mehrere solcher Bahnlaufregler längs einer laufenden Warenbahn einzusetzen und so getrennte, voneinander unabhängige Feinjustierungen des Warenbahnlaufes vor empfindlichen Produktionsschritten vorzunehmen. Allerdings ermöglicht ein solcher Bahnlaufregler keine Regelung der Zugspannung in der laufenden Warenbahn.A web guider with these features is known from DE-A 35 35 011. A rotating frame is mounted on a stationary frame and can be rotated about an axis that is perpendicular to the plane of the web running between the two guide rollers. The web guider is an independently operating control unit that can be inserted anywhere in the web run. Lateral deviations of the running web can therefore be corrected at any point in the web circulation. There is also the possibility of using several such web guiders along a running web and thus making separate, independent fine adjustments of the web run before sensitive production steps. However, such a web guider does not allow tension control in the running web.

Aus der EP-A-0 178 704 ist eine Einrichtung zum Regeln der Zugspannung in einer von einer Vorratsrolle ablaufenden Warenbahn bekannt. Dabei wird die die Vorratsrolle tragende Achse in Abhängigkeit von der Zugspannung gebremst, wozu die Zugspannung mit Hilfe einer von der Warenbahn umschlungenen Tänzerwalze erfaßt und in Abhängigkeit von der Lage der Tänzerwalze ein Mehrpunktregler bestätigt wird, der die Bremswirkung auf die die Vorratsrolle tragende Achse steuert. Zwar ist in diesem Dokument ohne weitere Angaben die Möglichkeit einer Ausregelung seitlicher Bahnabweichungen erwähnt, jedoch kann dies nur bedeuten, daß die Achse mit der darauf sitzenden Vorratsrolle in axialer Richtung verschiebbar ist und dadurch am Anfang der ablaufenden Warenbahn Bahnabweichungen ausgeregelt werden können. Schließlich ist aus GB-A-2 053 856 ein Bahnzugregler für eine von einer Vorratsrolle ablaufenden Warenbahn bekannt, bei welcher eine Walze, welche von der dazu um 180° aus der Bahnlaufebene abgelenkten Warenbahn umschlungen wird, senkrecht zur Bahnlaufebene durch den Bahnzug gegen eine vorgegebene Kraft auf- und abbewegt wird. In Abhängigkeit von der Walzenlage, die sich mit dem Bahnzug ändert, wird eine Bremse an der Achse der Vorratsrolle angesteuert, um eine konstante Spannung der Warenbahn unabhängig vom Durchmesser der Vorratsrolle und/oder der Abwickelgeschwindigkeit der Warenbahn zu erreichen. Eine Ausregelung seitlicher Bahnabweichungen ist bei diesem bekannten Bahnregler nicht möglich.From EP-A-0 178 704 a device for regulating the tension in a web running from a supply roll is known. The axis carrying the supply roll is braked depending on the tension, for which purpose the tension is detected with the aid of a dancer roller wrapped in the material web and, depending on the position of the dancer roller, a multi-point controller is confirmed which controls the braking action on the axis carrying the supply roll. Although the possibility of adjusting lateral path deviations is mentioned in this document without further information, this can only mean that the axis with the supply roll seated thereon can be displaced in the axial direction and thus path deviations can be corrected at the beginning of the running web. Finally, GB-A-2 053 856 discloses a web tension controller for a web running from a supply roll, in which a roller, which is wrapped by the web deflected by 180 ° from the web running plane, perpendicular to the web running plane through the web train against a predetermined one Force is moved up and down. Depending on the roller position, which changes with the web tension, a brake on the axis of the supply roll is activated in order to achieve a constant tension of the web regardless of the diameter of the stock roll and / or the unwinding speed of the web. A correction of lateral path deviations is not possible with this known path controller.

Der Erindung liegt die Aufgabe zugrunde, bei einem Bahnlaufregler der eingangs genannten Art zusätzlich zur Ausregelung seitlicher Bahnabweichungen zugleich auch eine genaue Regelung des Bahnzuges in der laufenden Warenbahn zu ermöglichen.The invention is based on the task of enabling a web guider of the type mentioned at the outset to also regulate lateral web deviations in addition to precisely regulating the web tension in the running web.

Diese Aufgabe wird nach der Erfindung dadurch gekennzeichnet, daß im Drehrahme zwischen den Führungswalzen eine mit ihnen parallelachsig und außerhalb ihrer Führungsebene gelagerte, von der Warenbahn umschlungene und mitgeschleppte Bremswalze vorgesehen ist, die eine von einem Stellantrieb betätigte Bremseinrichtung zur Beeinflussung des Bremsmomentes der Bremswalze auf die Warenbahn aufweist, und daß eine den Warenbahnzug in Laufrichtung der Warenbah hinter der Bremswalze ermittelnde Kraftmeßeinrichtung Meßwertsignale erzeugt, die über einen Regler mit Sollwert-Einstellung den Stellantrieb der Bremseinrichtung steuern.This object is characterized according to the invention in that in the rotational frame between the guide rollers a parallel with them and outside of their guide level, wrapped by the web and dragged along brake roller is provided, which is actuated by an actuator brake device for influencing the braking torque of the brake roller on the Goods web, and that a force measuring device which determines the web train in the direction of travel of the goods web behind the brake roller generates measured value signals which control the actuator of the braking device via a controller with setpoint adjustment.

In bevorzugter Ausführungsform umfaßt die den Warenbahnzug ermittelnde Kraftmeßeinrichtung eine im Drehrahmen längs des Laufs der Warenbahn zwischen der Bremswalze und der zweiten Führungswalze und mit beiden parallelachsig gelagerte, von der Warenbahn ebenfalls umschlungene Meßwalze mit Meßwertaufnehmern für die von der Warenbahn aufgrund des Warenbahnzuges auf die Meßwalze ausgeübten Kräfte.In a preferred embodiment, the force measuring device determining the web tension comprises a measuring roller in the rotating frame along the running of the web between the braking roller and the second guide roller and with two parallel-axis measuring rollers, likewise wrapped by the web, with measuring sensors for those exerted by the web due to the web tension on the measuring roller Powers.

Durch die Bremswalze wird je nach Betätigung der Bremseinrichtung eine mehr oder weniger große Bremskraft auf die die Bremswalze umschlingende Warenbahn ausgeübt und dadurch der Bahnzug beeinflußt. Der Bahnzug wird an der Meßwalze erfaßt und dient über den Regler wiederum zur Betätigung der Bremseinrichtung, so daß ein geschlossener Regelkreis für die Größe des Warenbahnzuges besteht. Der gewünschte Warenbahnzug kann durch den Sollwert-Einsteller im Regler vorgewählt werden. Da diese Bahnzugregelung nur die Umschlingung der Bremswalze und der Meßwalze verlangt, erfolgt die erfindungsgemäße Bahnzugregelung für die Warenbahn sehr kanten- und oberflächenschonend, so daß auch empfindliche Warenbahnen mit dem erfindungsgemäßen Bahnlaufregler geregelt werden können. Durch die Anordnung der Bremswalze und der Meßwalze im Drehrahmen selbst zwischen den beiden Führungswalzen wird für die Bahnzugregelung kein zusätzlicher Platz beansprucht. Der erfindungsgemäß sowohl den Bahnlauf als auch den Bahnzug regelnde Drehrahmen bildet also ein Kompaktgerät mit geringem Platzbedarf. Das ist besonders dann von Bedeutung, wenn - wie etwa bei der Wellpappenherstellung mehrere übereinander liegende Warenbahnen mit je einem Drehrahmen geregelt werden sollen und die Drehrahmen so zusammenarbeiten müssen, daß ein kantengenaues Führen aller Warenbahnen nach einer einheitlichen Sollposition möglich ist. Im Ergebnis ist eine reproduzierbare Bahnzugregelung bei genauer Bahnlaufregelung unter geringem Platzaufwand und optimaler Warenbahnschonung möglich.Depending on the actuation of the braking device, the brake roller exerts a more or less large braking force on the web of material that wraps around the brake roller, thereby influencing the web tension. The web tension is detected on the measuring roller and in turn serves to actuate the braking device via the controller, so that there is a closed control loop for the size of the web tension. The desired web train can be preselected in the controller using the setpoint adjuster. Since this web tension control only requires the wrapping of the brake roller and the measuring roller, the web tension control according to the invention for the web is very gentle on the edges and the surface, so that even sensitive webs can be controlled with the web guider according to the invention. Due to the arrangement of the brake roller and the measuring roller in the rotating frame itself between the two guide rollers, no additional space is required for the web tension control. The rotating frame regulating both the web run and the web tension according to the invention thus forms a compact device small space requirement. This is particularly important if - as in the case of corrugated cardboard manufacture, several superposed webs of material, each with a rotating frame, are to be regulated and the rotating frames have to work together in such a way that all the webs can be guided to the exact edge according to a uniform target position. As a result, reproducible web tension control with precise web guiding is possible in a small space and with optimal protection of the web.

Im einzelnen empfiehlt es sich, die Anordnung so zu treffen, daß die Meßwalze in einem Kraftmeßlager quer zur Walzenachse elastisch nachgiebig gelagert ist und in dieser Richtung die Meßwertaufnehmer die vom Warenbahnzug an der Meßwalzenachse resultierende Kraft aufnehmen. Die Meßwertaufnehmer sind zweckmäßig an elastischen Lagerstücken der Meßwalzenlager angeordnete Dehnungsmeßstreifen.In particular, it is advisable to make the arrangement so that the measuring roller is elastically resiliently mounted in a force measurement bearing transverse to the roller axis and in this direction the transducers absorb the force resulting from the web train on the measuring roller axis. The transducers are expediently arranged strain gauges on elastic bearing pieces of the measuring roller bearings.

Vorzugsweise ist die Meßwalze in der Führungsebene der beiden Führungswalzen gelagert. Weiter empfiehlt es sich, daß die Meßwalze im Abstand des Walzendurchmessers der Bremswalze neben der im Warenbahnverlauf ersten Führungswalze angeordnet und dadurch die erste Führungswalze und die Bremswalze über je 180° und die Meßwalze über 90° von der Warenbahn umschlungen ist. Durch die große Umschlingung der Bremswalze über 180° ergeben sich optimale Bremskräfte von der Bremswalze auf die Warenbahn, wobei im übrigen selbstverständlich die Möglichkeit besteht, die Bremswalze im Durchmesser erheblich größer als die beiden Führungswalzen oder die Meßwalze zu wählen, um so eine möglichst große Bremsfläche zu erhalten, in der die Warenbahn die Bremswalze berührt.The measuring roller is preferably mounted in the guide plane of the two guide rollers. It is also recommended that the measuring roller is arranged at a distance from the roller diameter of the brake roller next to the first guide roller in the course of the web, and thus the first guide roller and the brake roller are wrapped around the web over 180 ° and the measuring roller over 90 °. The large wrap of the brake roller over 180 ° results in optimal braking forces from the brake roller to the web, but of course there is of course the option of choosing the brake roller with a diameter that is considerably larger than the two guide rollers or the measuring roller in order to maximize the braking surface to get in which the web touches the brake roller.

Im übrigen empfiehlt es sich, daß die Bremseinrichtung der Bremswalze von einer pneumatisch betätigten Scheibenbremse gebildet ist und der Regler einen Signalwandler für die Umwandlung elektrischer Steuersignale in pneumatische Steuersignale aufweist.For the rest, it is recommended that the brake device of the brake roller is formed by a pneumatically actuated disc brake and the controller has a signal converter for converting electrical control signals into pneumatic control signals.

Im folgenden wir die Erfindung an einem in der Zeichnung dargestellten Ausführungsbeispiel näher erläutert; es zeigen:

Fig. 1
einen Bahnlaufregler nach der Erfindung in einer schematischen Seitenansicht,
Fig. 2
den Schnitt II-II in Fig. 1,
Fig. 3
den für die Regelung des Warenbahnzuges dienenden Regelkreis des Bahnlaufreglers nach den Fig. 1 und 2 in einem Blockdiagramm.
In the following we explain the invention in more detail using an embodiment shown in the drawing; show it:
Fig. 1
a web guider according to the invention in a schematic side view,
Fig. 2
the section II-II in Fig. 1,
Fig. 3
the used for the control of the web train control loop of the web guider according to FIGS. 1 and 2 in a block diagram.

Der in der Zeichnung dargestellte Bahnlaufregler für eine allgemein mit 1 bezeichnete Warenbahn besitzt frei um parallele Achsen 3 drehbare Führungswalzen 2.1, 2.2, über deren Mantelfläche die Warenbahn hinwegläuft. Die Führungswalzen sind in einem Drehrahmen 4 angeordnet, der auf einem feststehenden Gestell 5 drehbar um eine imaginäre Achse 6 gelagert ist und um diese Achse 6 mittels eines Stellmotors 7 verdrehbar ist. Der Stellmotor 7 wird in Abhängigkeit vom seitlichen Warenbahnversatz hinter der im Drehrahmen 4 zweiten Führungswalze 2.2 mittels eines auf den seitlichen Verlauf der Warenbahnkante oder einer Führungslinie auf der Warenbahn reagierenden Lagersensors 8, im Ausführungsbeispiel ein opto-elektrischer Fühler aus einem Infrarot-Sender 8.1 und Infrarot-Empfänger 8.2 gesteuert. Die Lagerung des Drehrahmens 4 auf dem feststehenden Gestell 5 erfolgt mittels im einzelen nicht dargestellter Bogenführungen 4', wie sie beispielsweise in DE 31 25 852 C1 im einzelnen beschrieben sind. Vor und hinter der ersten bzw. letzten Führungswalze 2.1, 2.2 des Drehrahmens 4 ist mindestens je eine weitere Umlenkwalze 9 mit feststehender Drehachse angeordnet. Die Umlenkwalzen 9 nehmen also nicht an den Stellbewegungen des Drehrahmens 4 teil. Sie lenken die Warenbahn 1 über die Führungswalzen 2.1, 2.2 des Drehrahmens 4 in eine senkrecht zur Führungsebene 10 zwischen den beiden Führungswalzen stehende Richtung um. Die Ausgangssignale des Lagesensors 8 werden in bekannter und daher nicht näher dargestellter und erläuterter Weise in Steuerbefehle für den Stellmotor 7 des Drehrahmens 4 umgesetzt. Registriert der Lagesensor 8 einen seitlichen Verlauf der Warenbahn 1, wird der Drehrahmen 4 vom Stellmotor 7 so verdreht, daß sich die zweite Führungswalze 2.2 des Drehrahmens in entgegensetzter Richtung etwas verschwenkt, so daß die Warenbahn zwischen der zweiten Führungswalze 2.2 und der ihr folgenden Umlenkwalze 9 wieder in ihre Soll-Lage zurückkehrt.The web guider shown in the drawing for a web generally denoted by 1 has guide rollers 2.1, 2.2 which can be freely rotated about parallel axes 3 and over whose lateral surface the web runs. The guide rollers are arranged in a rotating frame 4 which is rotatably mounted on a fixed frame 5 about an imaginary axis 6 and can be rotated about this axis 6 by means of a servomotor 7. The servomotor 7 is depending on the lateral web offset behind the second in the rotating frame 4 guide roller 2.2 by means of one on the lateral course of the web edge or a guide line on the Warehouse responsive storage sensor 8, in the exemplary embodiment, an opto-electrical sensor from an infrared transmitter 8.1 and infrared receiver 8.2 controlled. The rotating frame 4 is mounted on the fixed frame 5 by means of arch guides 4 ', not shown in detail, as described in detail in DE 31 25 852 C1, for example. At least one further deflecting roller 9 with a fixed axis of rotation is arranged in front of and behind the first or last guide roller 2.1, 2.2 of the rotating frame 4. The deflecting rollers 9 therefore do not take part in the adjusting movements of the rotating frame 4. They deflect the web 1 over the guide rollers 2.1, 2.2 of the rotating frame 4 in a direction perpendicular to the guide plane 10 between the two guide rollers. The output signals of the position sensor 8 are converted into control commands for the servomotor 7 of the rotating frame 4 in a known and therefore not shown and explained manner. If the position sensor 8 registers a lateral course of the web 1, the rotating frame 4 is rotated by the servomotor 7 so that the second guide roller 2.2 of the rotating frame swings somewhat in the opposite direction, so that the web between the second guide roller 2.2 and the deflection roller 9 following it returns to its target position.

Für die Bahnzugregelung ist im Drehrahmen 4 zwischen den Führungswalzen 2.1, 2.2 eine mit diesen Führungswalzen parallelachsig und außerhalb ihrer Führungsebene 10 gelagerte Bremswalze 11 vorgesehen, die von der Warenbahn umschlungen und mitgeschleppt ist. Die Bremswalze 11 besitzt eine von einem Stellantrieb betätigte Bremseinrichtung 12, so daß je nach dem auf die Bremswalze 11 von der Bremseinrichtung 12 ausgeübten Bremsmoment der Warenbahnzug in der die Bremswalze 11 mitschleppenden Warenbahn 1 beeinflußt werden kann. In Laufrichtung der Warenbahn 1 hinter der Bremswalze 11 befindet sich eine den Warenbahnzug ermittelnde Kraftmeßeinrichtung, deren Meßwertsignale über einen Regler 13 mit Sollwert-Einstellung den Stellantrieb der Bremseinrichtung 12 steuern. Diese Kraftmeßeinrichtung besteht aus einer im Drehrahmen 4 längs des Laufs der Warenbahn 1 zwischen der Bremswalze 11 und der zweiten Führungswalze 2.2 und mit beiden ebenfalls parallelachsig gelagerten und von der Warenbahn 1 umschlungenen Meßwalze 14 mit Meßwertaufnehmern für die von der Warenbahn aufgrund des Warenbahnzuges auf die Meßwalze ausgeübten Kräfte. Dazu ist im Ausführungsbeispiel die Meßwalze 14 in Kraftmeßlagern 15 quer zur Walzenachse 14' elastisch nachgiebig gelagert. In dieser Richtung der Nachgiebigkeit nehmen die Meßwertaufnehmer die vom Wahrenbahnzug an der Meßwalzenachse 14' resultierende Kraft auf. Die Meßwertaufnehmer können beispielsweise an elastischen Lagerstücken der Meßwalzenlager angeordnete Drehnungsmeßstreifen sein, was in der Zeichnung aber im einzelnen nicht dargestellt ist.For the web tension control a brake roller 11 is provided in the rotating frame 4 between the guide rollers 2.1, 2.2 with these guide rollers parallel to the axis and outside of their guide plane 10, which is wrapped around and dragged by the web. The brake roller 11 has a brake device 12 actuated by an actuator, so that depending on the Brake roller 11 braking torque exerted by the braking device 12 of the web train in which the web 1 dragging the brake roller 11 can be influenced. In the direction of travel of the web 1 behind the brake roller 11 there is a force measuring device which determines the web train, the measured value signals of which control the actuator of the braking device 12 via a controller 13 with setpoint adjustment. This force measuring device consists of a in the rotating frame 4 along the course of the web 1 between the brake roller 11 and the second guide roller 2.2 and with both also parallel-axis and wrapped by the web 1 measuring roller 14 with transducers for the web from the web due to the web train on the measuring roller exercised forces. For this purpose, the measuring roller 14 is elastically resiliently mounted in force measuring bearings 15 transversely to the roller axis 14 'in the exemplary embodiment. In this direction of compliance, the transducers absorb the force resulting from the web train on the measuring roller axis 14 '. The transducers can be, for example, rotary measuring strips arranged on elastic bearing pieces of the measuring roller bearings, but this is not shown in detail in the drawing.

Die Meßwalze 14 ist in der Führungsebene 10 der beiden Führungswalzen 2.1, 2.2 gelagert. Die Bremswalze 11 ist im Durchmesser größer als die Führungswalzen 2.1, 2.2 und die Meßwalze 14. Die Meßwalze 14 ist im Abstand des Walzendurchmessers der Bremswalze 11 neben der im Warenbahnverlauf ersten Führungswalze 2.1 angeordnet. Dadurch ergibt sich, daß die erste Führungswalze 2.1 und die Bremswalze 11 über je 180° und die Meßwalze 14 über 90° von der Warenbahn 1 umschlungen sind.The measuring roller 14 is mounted in the guide plane 10 of the two guide rollers 2.1, 2.2. The brake roller 11 is larger in diameter than the guide rollers 2.1, 2.2 and the measuring roller 14. The measuring roller 14 is arranged at a distance from the roller diameter of the brake roller 11 next to the first guide roller 2.1 in the course of the web. This results in that the first guide roller 2.1 and the brake roller 11 are wrapped over the web 1 over 180 ° and the measuring roller 14 over 90 °.

Die Bremseinrichtung 12 der Bremswalze 11 kann von einer pneumatisch betätigten Scheibenbremse gebildet sein. In diesem Fall besitzt der Regler 13 einen Signalwandler 16 für die Umwandlung elektrischer in pneumatische Steuersignale.The braking device 12 of the brake roller 11 can be formed by a pneumatically actuated disc brake. In this case, the controller 13 has a signal converter 16 for converting electrical into pneumatic control signals.

Im einzelnen werden die Meßwertsignale des Meßwertaufnehmers 15 einem Meßverstärker 17 mit Digitalanzeige zugeführt, dem eine Reglereinheit 18 nachgeschaltet ist, die von einem Sollwert-Steller 19 geführt ist. Die Reglereinheit 18 enthält Verstärker-, Summier- und Verzögerungsglieder und arbeitet mit ihrem Ausgang auf den Signalwandler 16, der mit seinem pneumatischen Teil an eine pneumatische Versorgungseinheit 20 und mit seinem Ausgang 21 an die pneumatisch betätigte Scheibenbremse 12 angeschlossen ist.Specifically, the measured value signals of the measured value sensor 15 are fed to a measuring amplifier 17 with a digital display, to which a regulator unit 18 is connected, which is guided by a setpoint adjuster 19. The controller unit 18 contains amplifier, summing and delay elements and works with its output on the signal converter 16, which is connected with its pneumatic part to a pneumatic supply unit 20 and with its output 21 to the pneumatically actuated disc brake 12.

Claims (7)

  1. A web travel regulator for regulating out lateral deviations of a travelling web (1) of material from a reference position, comprising a rotary frame (4) and two guide rollers (2.1, 2.2) which are mounted at a spacing from each other in the rotary frame with their axes parallel and between which the web (1) of material passes and at each of which the web of material is respectively deflected through substantially 90° out of the guide plane (10) formed by the two guide rollers, and a position sensor (8) which monitors the lateral path of the web (1) of material downstream of the guide roller (2.2) which is second in the movement of the web of material, the output signal of the position sensor being converted into control commands for a control motor (7) for rotating the rotary frame (4), characterised in that provided in the rotary frame (4) between the guide rollers (2.1, 2.2) is a braking roller (11) which is mounted outside their guide plane (10) and with its axis parallel to them and which has the web (1) passing therearound and which is entrained thereby and which has a braking device (12) actuated by a control drive for influencing the braking moment of the braking roller on the web of material, and that a force measuring device which determines the tension of the web (1) of material in the direction of travel thereof downstream of the braking roller (11) produces measurement value signals which control the control drive of the braking device (12) by way of a regulator (13) with reference value setting (19).
  2. A web travel regulator according to claim 1 characterised in that the force measuring device which detects the tension in the web of material includes a measurement roller (14) which is mounted in the rotary frame (4) along the path of travel of the web (1) of material between the braking roller (11) and the second guide roller (2.2) and with its axis parallel to both thereof and around which the web (1) of material also passes, the measurement roller having measurement value pick-ups for the forces applied to the measurement roller (14) by the web of material by virtue of the tension thereof.
  3. A web travel regulator according to claim 2 characterised in that the measurement roller (14) is mounted elastically yieldingly transversely to the roller axis (14') in a force measurement mounting (15) and in that direction the measurement value pick-ups sense the force resulting from the tension in the web of material at the measurement roller axis (14').
  4. A web travel regulator according to claim 3 characterised in that the measurement value pick-ups are strain gauges arranged on elastic mounting portions of the measurement roller mountings.
  5. A web travel regulator according to claim 3 or claim 4 characterised in that the measurement roller (14) is mounted in the guide plane (10) of the two guide rollers (2.1, 2.2).
  6. A web travel regulator according to one of claims 2 to 5 characterised in that the measurement roller (14) is arranged at the spacing of the diameter of the braking roller (11) beside the guide roller (2.1) which is first in the path of travel of the web of material and thereby the web (1) of material passes around the first guide roller (2.1) and the braking roller (11) over 180° in each case and the measurement roller (14) over 90°.
  7. A web travel regulator according to one of claims 1 to 6 characterised in that the braking device (12) of the braking roller (11) is formed by a pneumatically actuated disc brake and the regulator (13) has a signal transducer (16) for the conversion of electrical control signals into pneumatic control signals.
EP90904758A 1989-04-01 1990-03-27 Web travel controller Expired - Lifetime EP0417232B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90904758T ATE97634T1 (en) 1989-04-01 1990-03-27 WEB CONTROLLER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3910548 1989-04-01
DE3910548A DE3910548C1 (en) 1989-04-01 1989-04-01

Publications (2)

Publication Number Publication Date
EP0417232A1 EP0417232A1 (en) 1991-03-20
EP0417232B1 true EP0417232B1 (en) 1993-11-24

Family

ID=6377602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90904758A Expired - Lifetime EP0417232B1 (en) 1989-04-01 1990-03-27 Web travel controller

Country Status (6)

Country Link
US (1) US5111986A (en)
EP (1) EP0417232B1 (en)
JP (1) JP2775343B2 (en)
CA (1) CA2030357C (en)
DE (1) DE3910548C1 (en)
WO (1) WO1990011954A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131760C2 (en) * 1991-09-24 1998-01-15 Erhardt & Leimer Gmbh Method and device for regulating the tension of a textile web
US7296717B2 (en) * 2003-11-21 2007-11-20 3M Innovative Properties Company Method and apparatus for controlling a moving web
DE102005044339B4 (en) * 2005-09-16 2016-01-14 Siemens Aktiengesellschaft Method for operating a winder machine
DE102006048141B3 (en) * 2006-10-10 2008-07-31 Windmöller & Hölscher Kg Machine for treatment of web shaped materials, particularly printing machines, has transport speed, with which machine is transported and has rolls among which one roll is stressed by torque
DE102007044842A1 (en) * 2007-09-14 2009-03-19 Wolfgang Castagna Control of webs by coupled deflection devices
EP2070853A1 (en) * 2007-12-10 2009-06-17 Fife-Tidland GmbH Bridge for a corrugated cardboard system
DE102009022248B4 (en) * 2009-05-20 2019-04-25 Bw Papersystems Hamburg Gmbh Entwölbungsvorrichtung for Entwölbung a web, especially in a plant of the paper processing industry

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US3411684A (en) * 1965-07-12 1968-11-19 Seailles & Tison Sa Paying out under tension of products in sheet form,particularly paper sheet
FR2076671A5 (en) * 1970-01-23 1971-10-15 Lucas Raymond
US3652001A (en) * 1970-10-12 1972-03-28 Xerox Corp Label strip feeder
US3682362A (en) * 1971-03-15 1972-08-08 Rockford Servo Corp Web edge sensing and guiding apparatus
US3966105A (en) * 1973-08-10 1976-06-29 Cary Metal Products, Inc. Web aligning apparatus
AR206823A1 (en) * 1974-11-02 1976-08-23 Heidelberger Druckmasch Ag TRANSLATION DRUM ON ROTARY SHEET PRINTER MACHINES
DE2549762C2 (en) * 1975-11-06 1987-02-12 Maschinenfabrik Goebel Gmbh, 6100 Darmstadt Device for maintaining a stretch
US4204619A (en) * 1978-05-04 1980-05-27 Damour Lawrence R Pivoted web guide for travelling strip
FR2458501B1 (en) * 1979-06-08 1986-03-21 Astin France DEVICE FOR REGULATING THE TENSION OF A TRAVELING BELT
JPS5689541A (en) * 1979-12-05 1981-07-20 Rengo Co Ltd Method and device for guiding one side corrugated cardboard
DE3125852C1 (en) * 1981-07-01 1983-01-27 Erhardt & Leimer Kg, 8900 Augsburg Device for guiding travelling webs in the transverse direction
US4598849A (en) * 1984-03-23 1986-07-08 Beloit Corporation Web guiding and decurling apparatus
DE3437815A1 (en) * 1984-10-16 1986-04-17 Maschinenfabrik Goebel Gmbh, 6100 Darmstadt DEVICE FOR CONTROLLING THE TENSION IN A TRAIN
DE3512904C2 (en) * 1985-04-11 1987-03-12 Erhardt + Leimer GmbH, 8900 Augsburg Web guide controller
DE3535011A1 (en) * 1985-04-11 1987-01-15 Erhardt & Leimer Gmbh Web-travel controller

Also Published As

Publication number Publication date
EP0417232A1 (en) 1991-03-20
WO1990011954A1 (en) 1990-10-18
DE3910548C1 (en) 1990-04-26
CA2030357A1 (en) 1990-10-02
JPH03505078A (en) 1991-11-07
CA2030357C (en) 1994-09-06
JP2775343B2 (en) 1998-07-16
US5111986A (en) 1992-05-12

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