EP1843960B1 - Method and device for applying a pressure roller to a goods guiding roller - Google Patents

Method and device for applying a pressure roller to a goods guiding roller Download PDF

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Publication number
EP1843960B1
EP1843960B1 EP06705840A EP06705840A EP1843960B1 EP 1843960 B1 EP1843960 B1 EP 1843960B1 EP 06705840 A EP06705840 A EP 06705840A EP 06705840 A EP06705840 A EP 06705840A EP 1843960 B1 EP1843960 B1 EP 1843960B1
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EP
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Prior art keywords
piston
cylinder unit
pressure roller
roller
pressure
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EP06705840A
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German (de)
French (fr)
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EP1843960A1 (en
Inventor
Ernst Meyer
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/144—Roller pairs with relative movement of the rollers to / from each other

Definitions

  • the invention relates to a method and a device for applying a cooperating with a rotationally driven goods guide roller, rotatably mounted pressure roller.
  • thermoplastic film e.g. Air pockets between the fabric guide roller and the pressure roller can be avoided by pressing on the line-shaped casserole of the film on the guide roller equipped with a rubberized roll shell pressure roller.
  • the pressing must be done across the width of the film, namely on the casserole of the cloth guide roller linear and with a nearly constant pressure level of the pressure roller.
  • the deflection of the roller increases and on the other hand, the applied contact force causes the linear contact of the rollers over the fabric width lost goes, that is the rollers have contact only in the region of their ends, while in the central region no contact force is achieved.
  • a further increase in the contact pressure leads to no better result, rather still to an increase in the gap between the rollers.
  • the object of the present invention is therefore to provide a device with which a simultaneous contact contact is ensured on the entire roll width when applying a pressure roller to a goods guide roller, wherein a predetermined desired contact pressure between the guide roller and the pressure roller neither during the application process, is exceeded during further operation.
  • a method is provided, according to which a first, double-acting piston-cylinder unit, the pressure roller in the direction of the goods guide roller shifts to the end stop of the first piston-cylinder unit.
  • the end stop of the first piston-cylinder unit is adjusted so that the pressure roller is axially parallel to the goods guide roller with a predetermined residual stroke.
  • a second piston-cylinder unit At the end stop of the piston of the first piston-cylinder unit acts a second piston-cylinder unit, which is operatively connected via a lever with the first piston-cylinder unit, advantageously as a shock absorber.
  • the pressure P1 for acting on the first piston-cylinder unit is set so high that the applied cylinder force of the first piston-cylinder unit is greater than the force of the acting via the lever second piston-cylinder unit.
  • the first piston-cylinder unit thus acts as a rigid connection during the following process steps.
  • the second piston-cylinder unit is pressurized P2.
  • the second piston-cylinder unit now performs, via the force-enhancing lever and acting on the first piston-cylinder unit, the remaining stroke.
  • the axis parallelism is maintained. This results in a simultaneous contact over the entire roll width.
  • the pressure P2 is adjusted so that the desired contact pressure between the rollers results.
  • the lever with a power amplifying ratio allows a correspondingly small dimensions of the second piston-cylinder unit with correspondingly small cylinder volume and small frictional forces of the gaskets. This results in two advantages.
  • the residual stroke is performed on both lateral bearings of the pressure roller almost simultaneously and at a uniform speed, because the cylinder volume is small and thus the reaction time of the piston-cylinder unit is short.
  • the axis parallelism is maintained during the rest of the stroke and the almost simultaneous touch contact over the entire roll width is guaranteed. This avoids an adverse effect on the quality of the goods that would occur in the case of one-sided contact.
  • the solution according to the invention advantageously achieves a narrow, nearly constant contact force of a pressure roller on a guide roller over the length of the rollers while avoiding trapped air between the roller surface and the web, and further experiences the surface of the guided over the guide roller product no qualitative impairments.
  • the second piston-cylinder unit retracts and thus acts at the end stop of the first piston-cylinder unit advantageous as a damper. After reaching the end stop of the first piston-cylinder unit, the second piston-cylinder unit is extended. Thereafter, the device is ready to start again for the next startup.
  • a device for carrying out the method according to claim 4, a device is provided, according to which a pressure roller is rotatably mounted in spaced apart support arms, which are rigidly connected to the guide carriage at least one fixed linear guide, each arm at least one first piston-cylinder unit effective is.
  • the first piston-cylinder unit is pressurized by a pressure source via a first pressure regulating valve, a first control valve and compressed air via compressed lines.
  • the first piston-cylinder unit establishes an operative connection between the support arms and a lever pivotable about an installation-fixed pivot point, the free end of which is operatively connected to the piston rod of a second piston-cylinder unit.
  • a Cylinder of the second piston-cylinder unit is operatively connected to a plant-fixed point.
  • the second piston-cylinder unit is pressurized by the pressure source via the first pressure regulating valve, via a second pressure regulating valve, via a second control valve and via pressure lines with compressed air.
  • the first and the second control valve is signal transmitting connected to the electronic control of the system.
  • two position switches at the end positions of the pistons are arranged on the first and on the second piston-cylinder unit, which are signal-transmitting connected to the electronic control of the system.
  • a first double-acting piston-cylinder unit 7 is provided for applying a pressure roller 4 to a rotationally driven goods guide roller 3, which is operatively connected via a lever 9 with a second double-acting piston-cylinder unit 8.
  • the pressure roller 4 is mounted laterally in a support arm 6, which is rigidly connected to the guide carriage 5a of a linear guide 5.
  • a device 1 is shown in each case.
  • the first piston-cylinder unit 7 must be completely retracted. This is signaled to the controller 10 by the position switch 7a via the signal line 7c.
  • the second piston-cylinder unit 8 must be fully extended. This is signaled to the controller by the position switch 8b via the signal line 8d.
  • the controller 10 sends a signal via the signal line 11 b to a first control valve 11.
  • the control valve 11 is actuated and the first piston-cylinder unit 7 is supplied via the pressure line 19b with compressed air.
  • the required compressed air flows from the pressure source 15 via the pressure lines 16, 17, 19 and 19b in the first piston-cylinder unit 7.
  • the pressure P1 for acting on the first piston-cylinder unit 7 is set to a first pressure control valve 13.
  • the first piston-cylinder unit 7 extends and shifts the pressure roller 4 in the direction of the goods guide roller 3 to the end stop of the first piston-cylinder unit.
  • the second piston-cylinder unit 8 acts as a shock absorber.
  • the position switch 7b outputs via the control line 7d a signal to the controller 10 as soon as the first piston-cylinder unit 7 is fully extended.
  • the controller 10 then outputs a signal to a second control valve 12 via the control line 12a.
  • the control valve 12 is actuated and a second piston-cylinder unit 8 is supplied via the pressure line 18 a with compressed air.
  • the required compressed air flows from the pressure source 15 via the pressure lines 16, 17, 18 and 18 a in the first piston-cylinder unit 7.
  • the pressure P2 for acting on the second piston-cylinder unit 8 is set to a second pressure control valve 14.
  • the second piston-cylinder unit 8 retracts and moves via the lever 9 and the rigidly extended first piston-cylinder unit 7, the pressure roller 4 in the direction of the goods guide roller 3, to contact exists.
  • the position switch 8a sends the controller 10 via the control line 8c the signal "second piston-cylinder unit retracted". Thus, the operating position of the pressure roller is registered in the controller.
  • the pressure P2 is adjusted so that the desired contact pressure between the rollers results.
  • the pressure P1 is higher than the pressure P2. This ensures that the extended piston-cylinder unit 7 acts like a rigid connection in operation and only the pressure P2 determines the contact pressure between the rollers.
  • the controller 10 receives the signal to drive away the pressure roller 4 from the operator of the system, then the controller sends a signal via the signal line 11a to the control valve 11.
  • the control valve 11 is actuated and compressed air is applied to the first piston-cylinder unit 7, that the piston retracts and the pressure roller 4 moves away from the goods guide roller 3.
  • the second piston-cylinder unit 8 acts as a shock absorber.
  • the position switch 7a outputs via the control line 7c a signal to the controller 10, as soon as the first piston-cylinder unit 7 is fully retracted.
  • the controller 10 then outputs a signal to the second control valve 12 via the control line 12b.
  • the control valve 12 is actuated and the second piston-cylinder unit 8 is pressurized via the pressure line 18b in such a way that the piston extends.

Abstract

A method and an apparatus are for applying a rotationally driven pressure roller (4) onto a rotationally driven goods guiding roller (3) in stretching equipment for thermoplastic films. The pressure roller (4) is advanced in the direction of the goods guiding roller (3) by at least one first pressurizable piston-cylinder unit (7) in such a manner so that after the advancement an axis-parallel remaining stroke exists between the pressure roller (4) and the goods guiding roller (3). Then at least one second pressurizable piston-cylinder unit (8) operatively connected with the first piston-cylinder unit (7) carries out the remaining stroke, while maintaining the axis-parallelism, until a touching contact exists between the pressure roller (4) and the goods guiding roller (3). Then the pressure roller (4) becomes effective with a nominal pressing force onto the goods guiding roller (3).

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Anlegen einer mit einer drehangetriebenen Warenführungswalze zusammenwirkenden, drehbeweglich gelagerten Anpresswalze.The invention relates to a method and a device for applying a cooperating with a rotationally driven goods guide roller, rotatably mounted pressure roller.

Die Behandlung bahnförmiger Ware, z.B. bahnförmiger thermoplastischer oder metallischer Folie, erfolgt unter anderem in Anlagen mit drehangetriebenen Warenführungswalzen. Derartige Warenführungswalzen wirken mit drehangetriebenen Anpresswalzen zusammen, um einerseits insbesondere zu verhindern, dass Luft zwischen den Warenführungswalzen und der bahnförmigen Ware eingeschlossen wird und andererseits eine ausreichende Reibung zwischen Walze und Folie zu erhalten. Bei einer thermoplastischen Folie z.B. werden Lufteinschlüsse zwischen der Warenführungswalze und der Anpresswalze dadurch vermieden, dass an dem linienförmigen Auflauf der Folie auf die Warenführungswalze eine mit einem gummierten Walzenmantel ausgestattete Anpresswalze angepresst wird.The treatment of sheet-like goods, e.g. web-shaped thermoplastic or metallic film, takes place, inter alia, in systems with rotary-driven goods guide rollers. Such goods guide rollers cooperate with rotationally driven pressure rollers, on the one hand in particular to prevent air between the guide rollers and the web-shaped goods is included and on the other hand to obtain sufficient friction between the roller and the film. For a thermoplastic film, e.g. Air pockets between the fabric guide roller and the pressure roller can be avoided by pressing on the line-shaped casserole of the film on the guide roller equipped with a rubberized roll shell pressure roller.

Das Anpressen muss über die Breite der Folie, und zwar am Auflauf der Warenführungwalze linear und mit nahezu konstantem Druckniveau der Anpresswalze erfolgen. Bei einem relativ großen Abstand der die Walzen aufnehmenden Lager ist es kompliziert, diese vorgenannte Forderung zu erfüllen, weil zum einen mit zunehmendem Lagerabstand die Durchbiegung der Walze zunimmt und zum anderen die aufgebrachte Anpresskraft dazu führt, dass der lineare Kontakt der Walzen über die Warenbreite verloren geht, d.h. die Walzen haben nur noch im Bereich ihrer Enden Berührungskontakt, während im mittleren Bereich keine Anpresskraft erzielt wird. Eine weitere Erhöhung der Anpresskraft führt zu keinem besseren Ergebnis, eher noch zu einer Vergrößerung des Spaltes zwischen den Walzen.The pressing must be done across the width of the film, namely on the casserole of the cloth guide roller linear and with a nearly constant pressure level of the pressure roller. With a relatively large distance of the bearing receiving the rollers, it is complicated to meet this requirement, because on the one hand with increasing bearing clearance, the deflection of the roller increases and on the other hand, the applied contact force causes the linear contact of the rollers over the fabric width lost goes, that is the rollers have contact only in the region of their ends, while in the central region no contact force is achieved. A further increase in the contact pressure leads to no better result, rather still to an increase in the gap between the rollers.

Beim Betrieb mit einer über die Walzenbreite gleichmäßig verteilten, geringen Anpresskraft wurde festgestellt, dass in diesem Druckbereich die Reibung der Kolbenmanschetten in einer pneumatischen Kolben-Zylinder-Einheit ein exaktes Einstellen der Anpresskraft der Anpresswalze an die Warenführungswalze verhindert. Bei Erhöhung des Arbeitsdruckes wurden zwar die Reibungskräfte der Kolben-Zylinder-Einheit überwunden, aber gleichzeitig wurde auch eine unerwünscht hohe Anpresskraft realisiert, die zu den vorgenannten Unzulänglichkeiten führt.During operation with a uniformly distributed over the roll width, low contact force was found that in this pressure range, the friction of the piston seals in a pneumatic piston-cylinder unit prevents precise adjustment of the contact pressure of the pressure roller to the goods guide roller. While increasing the working pressure while the frictional forces of the piston-cylinder unit were overcome, but at the same time an undesirably high contact pressure was achieved, which leads to the aforementioned shortcomings.

Aus der Patentanmeldung der Anmelderin mit des Veroffentlichnugsnümmer DE 103 44 710 ist ein Verfahren und eine Vorrichtung zur Regelung der Anpresskraft einer Anpresswalze an eine Warenführungswalze bekannt, mit welchen eine vorgegebene Soll-Anpresskraft einer mit wenigstens einer pneumatisch betriebenen Kolben-Zylinder-Einheit an einer Warenführungswalze anlegbare Anpresswalze nicht überschritten wird. Als nächstliegendes Stand der Technik wird die in Dokument DE 26 53 725 offenbarte Vorrichtung angesehen. Diese Erfindung behebt die vorgenannten Nachteile.From the patent application of the applicant with the publication DE 103 44 710 a method and a device for controlling the contact pressure of a pressure roller to a goods guide roller is known, with which a predetermined desired contact pressure of an applicable with at least one pneumatically operated piston-cylinder unit on a guide roller pressure roller is not exceeded. The closest prior art is the document DE 26 53 725 disclosed device. This invention overcomes the aforementioned disadvantages.

In der Praxis hat sich jedoch gezeigt, dass neben der regelbaren Anpresskraft der angelegten Anpresswalze auch das Zustandekommen des Berührungskontaktes zwischen den Walzen und der Folie einen entscheidenden Einfluss auf die Qualität der Folie hat. Um nachteilige Auswirkungen auf die Qualität der Folie beim Berührungskontakt zu vermeiden, wird die Anpresswalze vor dem Anlegen mit einer Umfangsgeschwindigkeit angetrieben, die der Foliengeschwindigkeit entspricht.In practice, however, has shown that in addition to the controllable contact pressure of the applied pressure roller and the emergence of the contact between the rollers and the film has a decisive influence on the quality of the film. To avoid adverse effects on the quality of the film in contact with the contact, the pressure roller is driven prior to application with a peripheral speed corresponding to the film speed.

Des weiteren ist es vorteilhaft, wenn ein linearer Berührungskontakt auf der gesamten Walzenbreite zwischen den Walzen und der Folie gleichzeitig zustande kommt. Diese Anforderung ist wegen den üblichen Abmessungen im Bereich der Folienreckanlagen und den entsprechend großen Walzen mit entsprechend großen Massen jedoch schwer zu erfüllen, weil mit großen, pneumatisch angetriebenen Kolben-Zylinder-Einheiten gearbeitet werden muss. Üblicherweise werden hier Walzen mit einer Masse von z.B. 1800 kg eingesetzt. Zum Bewegen dieser Masse wird ein bestimmter Mindestdurchmesser der Kolben-Zylinder-Einheiten benötigt. Aus Sicherheitsgründen und zum leichteren Einziehen der Ware ist zudem ein bestimmter Mindestabstand zwischen den Walzen in der zurückgezogenen Stellung gefordert. Dieser Mindestabstand muss beim Anlegen der Anpresswalze überwunden werden und setzt damit einen bestimmten Mindesthub der Kolben-Zylinder-Einheiten voraus. Hinreichend dimensionierte pneumatische Kolben-Zylinder-Einheiten führen jedoch aufgrund der Reibung der Kolbenmanschetten keine exakt gleichmäßigen Bewegungen durch und haben aufgrund des großen Volumens und begrenzter Luftvolumenströme eine lange Ansprechzeit. Die oben genannte Erfindung kann deshalb den Nachteil des ungleichmäßigen Anlegens der Anpresswalze an die Warenführungswalze nicht beheben.Furthermore, it is advantageous if a linear contact contact on the entire roll width between the rollers and the film comes about simultaneously. However, this requirement is difficult to meet because of the usual dimensions in the field of film stretching lines and the correspondingly large rolls with correspondingly large masses, because you have to work with large, pneumatically driven piston-cylinder units. Usually, rolls with a mass of eg 1800 kg are used here. To move this mass a certain minimum diameter of the piston-cylinder units is needed. For safety reasons and to facilitate the collection of goods, a certain minimum distance between the rollers in the retracted position is also required. This minimum distance must be overcome when creating the pressure roller and thus requires a certain minimum stroke of the piston-cylinder units. Sufficiently dimensioned pneumatic piston-cylinder units, however, perform due to the friction of the piston seals no exactly uniform movements and have a long response time due to the large volume and limited air flow rates. Therefore, the above invention can not solve the disadvantage of uneven application of the pressure roller to the stock guide roller.

Die Aufgabe der vorliegenden Erfindung besteht deshalb darin, eine Vorrichtung zu schaffen, mit der ein gleichzeitiger Berührungskontakt auf der ganzen Walzenbreite beim Anlegen einer Anpresswalze an eine Warenführungswalze gewährleistet ist, wobei eine vorgegebene Soll-Anpresskraft zwischen der Warenführungswalze und der Anpresswalze weder während des Anlegevorganges, noch im weiteren Betrieb überschritten wird.The object of the present invention is therefore to provide a device with which a simultaneous contact contact is ensured on the entire roll width when applying a pressure roller to a goods guide roller, wherein a predetermined desired contact pressure between the guide roller and the pressure roller neither during the application process, is exceeded during further operation.

Die Aufgabe wird gelöst, durch die kennzeichnenden Merkmale des Anspruchs 1.The object is achieved by the characterizing features of claim 1.

Weiter wird ein Verfahren vorgesehen, wonach eine erste, doppelt wirkende Kolben-Zylinder-Einheit die Anpresswalze in Richtung der Warenführungswalze verschiebt bis zum Endanschlag der ersten Kolben-Zylinder-Einheit. Der Endanschlag der ersten Kolben-Zylinder-Einheit wird so eingestellt, dass die Anpresswalze mit einem vorgegebenen Resthub achsparallel zur Warenführungswalze liegt. Beim Endanschlag des Kolbens der ersten Kolben-Zylinder-Einheit wirkt eine zweite Kolben-Zylinder-Einheit, die über einen Hebel mit der ersten Kolben-Zylinder-Einheit wirkverbunden ist, vorteilhaft als Stoßdämpfer.Further, a method is provided, according to which a first, double-acting piston-cylinder unit, the pressure roller in the direction of the goods guide roller shifts to the end stop of the first piston-cylinder unit. The end stop of the first piston-cylinder unit is adjusted so that the pressure roller is axially parallel to the goods guide roller with a predetermined residual stroke. At the end stop of the piston of the first piston-cylinder unit acts a second piston-cylinder unit, which is operatively connected via a lever with the first piston-cylinder unit, advantageously as a shock absorber.

Der Druck P1 zur Beaufschlagung der ersten Kolben-Zylinder-Einheit wird so hoch eingestellt, dass die ausgeübte Zylinderkraft der ersten Kolben-Zylinder-Einheit größer ist, als die Kraft der über den Hebel wirkenden zweiten Kolben-Zylinder-Einheit. Die erste Kolben-Zylinder-Einheit wirkt somit während der folgenden Verfahrensschritte wie eine starre Verbindung.The pressure P1 for acting on the first piston-cylinder unit is set so high that the applied cylinder force of the first piston-cylinder unit is greater than the force of the acting via the lever second piston-cylinder unit. The first piston-cylinder unit thus acts as a rigid connection during the following process steps.

Danach wird die zweite Kolben-Zylinder-Einheit mit Druck P2 beaufschlagt. Die zweite Kolben-Zylinder-Einheit führt nun, über den kraftverstärkenden Hebel und über die erste Kolben-Zylinder-Einheit wirkend, den Resthub aus. Dabei wird die Achsparallelität beibehalten. Dadurch erfolgt ein gleichzeitiger Berührungskontakt über der gesamten Walzenbreite. Der Druck P2 wird so eingestellt, dass sich die gewünschte Anpresskraft zwischen den Walzen ergibt.Thereafter, the second piston-cylinder unit is pressurized P2. The second piston-cylinder unit now performs, via the force-enhancing lever and acting on the first piston-cylinder unit, the remaining stroke. The axis parallelism is maintained. This results in a simultaneous contact over the entire roll width. The pressure P2 is adjusted so that the desired contact pressure between the rollers results.

Der Hebel mit einer kraftverstärkenden Übersetzung ermöglicht eine entsprechend kleine Dimensionierung der zweiten Kolben-Zylinder-Einheit mit entsprechend kleinen Zylindervolumen und kleinen Reibungskräften der Dichtungsmanschetten. Daraus ergeben sich zwei Vorteile.The lever with a power amplifying ratio allows a correspondingly small dimensions of the second piston-cylinder unit with correspondingly small cylinder volume and small frictional forces of the gaskets. This results in two advantages.

Erstens wird der Resthub an beiden seitlichen Lagerungen der Anpresswalze nahezu gleichzeitig und mit gleichmäßiger Geschwindigkeit ausgeführt, weil das Zylindervolumen klein und damit die Reaktionszeit der Kolben-Zylinder-Einheit kurz ist. Dadurch bleibt die Achsparallelität während des Resthubs erhalten und der nahezu gleichzeitige Berührungskontakt über der gesamten Walzenbreite ist gewährleistet. Damit wird eine nachteilige Beeinträchtigung der Warenqualität vermieden, die bei einem einseitigen Berührungskontakt auftreten würde.First, the residual stroke is performed on both lateral bearings of the pressure roller almost simultaneously and at a uniform speed, because the cylinder volume is small and thus the reaction time of the piston-cylinder unit is short. As a result, the axis parallelism is maintained during the rest of the stroke and the almost simultaneous touch contact over the entire roll width is guaranteed. This avoids an adverse effect on the quality of the goods that would occur in the case of one-sided contact.

Zweitens wird mit der erfindungsgemäßen Lösung in vorteilhafter Weise eine in engen Grenzen haltbare, nahezu konstante Anpresskraft einer Anpresswalze an eine Warenführungswalze über die Länge der Walzen unter Vermeidung von Lufteinschlüssen zwischen der Walzenoberfläche und der Warenbahn erreicht und ferner erfährt die Oberfläche der über die Warenführungswalze geführten Ware keine qualitativen Beeinträchtigungen.Second, the solution according to the invention advantageously achieves a narrow, nearly constant contact force of a pressure roller on a guide roller over the length of the rollers while avoiding trapped air between the roller surface and the web, and further experiences the surface of the guided over the guide roller product no qualitative impairments.

Beim Wegfahren der Anpresswalze bleibt zunächst die zweite Kolben-Zylinder-Einheit eingefahren und wirkt damit beim Endanschlag der ersten Kolben-Zylinder-Einheit vorteilhaft als Dämpfer. Nach dem Erreichen des Endanschlages der ersten Kolben-Zylinder-Einheit wird die zweite Kolben-Zylinder-Einheit ausgefahren. Danach ist die Vorrichtung wieder startbereit für den nächsten Anfahrvorgang.When driving away the pressure roller initially the second piston-cylinder unit retracts and thus acts at the end stop of the first piston-cylinder unit advantageous as a damper. After reaching the end stop of the first piston-cylinder unit, the second piston-cylinder unit is extended. Thereafter, the device is ready to start again for the next startup.

Zur Ausführung des Verfahrens ist gemäß Anspruch 4 eine Vorrichtung vorgesehen, wonach eine Anpresswalze drehbeweglich gelagert ist in voneinander beabstandet angeordneten Tragarmen, welche mit den Führungsschlitten wenigstens einer anlagenfesten Linearführung starr verbunden sind, wobei auf jeden Tragarm jeweils wenigstens eine erste Kolben-Zylinder-Einheit wirksam ist. Die erste Kolben-Zylinder-Einheit wird von einer Druckquelle über ein erstes Druckregelventil, ein erstes Steuerventil und über Druckleitungen mit Druckluft beaufschlagt.For carrying out the method according to claim 4, a device is provided, according to which a pressure roller is rotatably mounted in spaced apart support arms, which are rigidly connected to the guide carriage at least one fixed linear guide, each arm at least one first piston-cylinder unit effective is. The first piston-cylinder unit is pressurized by a pressure source via a first pressure regulating valve, a first control valve and compressed air via compressed lines.

Die erste Kolben-Zylinder-Einheit stellt eine Wirkverbindung zwischen den Tragarmen und einem um einen anlagenfesten Drehpunkt schwenkbaren Hebel her, dessen freies Ende mit der Kolbenstange einer zweiten Kolben-Zylinder-Einheit wirkverbunden ist. Der Zylinder der zweiten Kolben-Zylinder-Einheit ist mit einer anlagenfesten Stelle wirkverbunden.The first piston-cylinder unit establishes an operative connection between the support arms and a lever pivotable about an installation-fixed pivot point, the free end of which is operatively connected to the piston rod of a second piston-cylinder unit. Of the Cylinder of the second piston-cylinder unit is operatively connected to a plant-fixed point.

Die zweite Kolben-Zylinder-Einheit wird von der Druckquelle über das erste Druckregelventil, über ein zweites Druckregelventil, über ein zweites Steuerventil und über Druckleitungen mit Druckluft beaufschlagt.The second piston-cylinder unit is pressurized by the pressure source via the first pressure regulating valve, via a second pressure regulating valve, via a second control valve and via pressure lines with compressed air.

Das erste und das zweite Steuerventil ist signalübertragend mit der elektronischen Steuerung der Anlage verbunden.The first and the second control valve is signal transmitting connected to the electronic control of the system.

In weiterer Ausgestaltung der Erfindung sind an der ersten und an der zweiten Kolben-Zylinder-Einheit je zwei Positionsschalter an den Endpositionen der Kolben angeordnet, welche signalübertragend mit der elektronischen Steuerung der Anlage verbunden sind.In a further embodiment of the invention, two position switches at the end positions of the pistons are arranged on the first and on the second piston-cylinder unit, which are signal-transmitting connected to the electronic control of the system.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher dargestellt.The invention will now be described in more detail with reference to an exemplary embodiment.

In den Zeichnungen zeigen:

Figur 1
die schematische Darstellung einer Vorrichtung mittels welcher ein Verfahren nach Anspruch 1 durchgeführt werden kann und
Figur 2
eine ausgeführte Anordnung der vorliegenden Erfindung in der Seitenansicht ohne Steuerungskomponenten.
In the drawings show:
FIG. 1
the schematic representation of a device by means of which a method according to claim 1 can be carried out and
FIG. 2
an executed arrangement of the present invention in the side view without control components.

In der schematisch dargestellten Vorrichtung 1 ist zum Anlegen einer Anpresswalze 4 an eine drehangetriebene Warenführungswalze 3 eine erste doppelt wirkenden Kolben-Zylinder-Einheit 7 vorgesehen, welche über einen Hebel 9 mit einer zweiten doppelt wirkenden Kolben-Zylinder-Einheit 8 wirkverbunden ist. Dabei ist die Anpresswalze 4 seitlich in einem Tragarm 6 gelagert, welcher starr verbunden ist mit dem Führungsschlitten 5a einer Linearführung 5. An beiden seitlichen Enden der Anpresswalze 4 ist jeweils eine dargestellte Vorrichtung 1 angeordnet.In the schematically illustrated device 1, a first double-acting piston-cylinder unit 7 is provided for applying a pressure roller 4 to a rotationally driven goods guide roller 3, which is operatively connected via a lever 9 with a second double-acting piston-cylinder unit 8. In this case, the pressure roller 4 is mounted laterally in a support arm 6, which is rigidly connected to the guide carriage 5a of a linear guide 5. At both lateral ends of the pressure roller 4, a device 1 is shown in each case.

Erhält die elektronische Steuerung 10 vom Bediener der Anlage das Signal zum Anfahren der Anpresswalze 4 an die Warenführungswalze 3, dann prüft die Steuerung 10, ob die Startvoraussetzungen erfüllt sind.Receives the electronic control 10 from the operator of the system, the signal for starting the nip roller 4 to the goods guide roller 3, then checks the controller 10, whether the starting prerequisites are met.

Dazu muss die erste Kolben-Zylinder-Einheit 7 ganz eingefahren sein. Dies wird der Steuerung 10 von dem Positionsschalter 7a über die Signalleitung 7c signalisiert. Des weiteren muss die zweite Kolben-Zylinder-Einheit 8 ganz ausgefahren sein. Dies wird der Steuerung von dem Positionsschalter 8b über die Signalleitung 8d signalisiert.For this purpose, the first piston-cylinder unit 7 must be completely retracted. This is signaled to the controller 10 by the position switch 7a via the signal line 7c. Of further, the second piston-cylinder unit 8 must be fully extended. This is signaled to the controller by the position switch 8b via the signal line 8d.

Liegen die Startvoraussetzungen vor, so sendet die Steuerung 10 ein Signal über die Signalleitung 11 b zu einem ersten Steuerventil 11.If the starting conditions exist, the controller 10 sends a signal via the signal line 11 b to a first control valve 11.

Das Steuerventil 11 wird betätigt und die erste Kolben-Zylinder-Einheit 7 wird über die Druckleitung 19b mit Druckluft versorgt. Die benötigte Druckluft strömt von der Druckquelle 15 über die Druckleitungen 16, 17, 19 und 19b in die erste Kolben-Zylinder-Einheit 7. Der Druck P1 zur Beaufschlagung der ersten Kolben-Zylinder-Einheit 7 wird an einem ersten Druckregelventil 13 eingestellt.The control valve 11 is actuated and the first piston-cylinder unit 7 is supplied via the pressure line 19b with compressed air. The required compressed air flows from the pressure source 15 via the pressure lines 16, 17, 19 and 19b in the first piston-cylinder unit 7. The pressure P1 for acting on the first piston-cylinder unit 7 is set to a first pressure control valve 13.

Die erste Kolben-Zylinder-Einheit 7 fährt aus und verschiebt die Anpresswalze 4 in Richtung der Warenführungswalze 3 bis zum Endanschlag der ersten Kolben-Zylinder-Einheit. Beim Endanschlag des Kolbens der ersten Kolben-Zylinder-Einheit 7 wirkt die zweite Kolben-Zylinder-Einheit 8 als Stoßdämpfer.The first piston-cylinder unit 7 extends and shifts the pressure roller 4 in the direction of the goods guide roller 3 to the end stop of the first piston-cylinder unit. At the end stop of the piston of the first piston-cylinder unit 7, the second piston-cylinder unit 8 acts as a shock absorber.

Der Positionsschalter 7b gibt über die Steuerleitung 7d ein Signal an die Steuerung 10, sobald die erste Kolben-Zylinder-Einheit 7 vollständig ausgefahren ist.The position switch 7b outputs via the control line 7d a signal to the controller 10 as soon as the first piston-cylinder unit 7 is fully extended.

Die Steuerung 10 gibt darauf hin ein Signal an ein zweites Steuerventil 12 über die Steuerleitung 12a. Das Steuerventil 12 wird betätigt und eine zweite Kolben-Zylinder-Einheit 8 wird über die Druckleitung 18a mit Druckluft versorgt. Die benötigte Druckluft strömt von der Druckquelle 15 über die Druckleitungen 16, 17, 18 und 18a in die erste Kolben-Zylinder-Einheit 7. Der Druck P2 zur Beaufschlagung der zweiten Kolben-Zylinder-Einheit 8 wird an einem zweiten Druckregelventil 14 eingestellt.The controller 10 then outputs a signal to a second control valve 12 via the control line 12a. The control valve 12 is actuated and a second piston-cylinder unit 8 is supplied via the pressure line 18 a with compressed air. The required compressed air flows from the pressure source 15 via the pressure lines 16, 17, 18 and 18 a in the first piston-cylinder unit 7. The pressure P2 for acting on the second piston-cylinder unit 8 is set to a second pressure control valve 14.

Die zweite Kolben-Zylinder-Einheit 8 fährt ein und bewegt dabei über den Hebel 9 und die starr ausgefahrene erste Kolben-Zylinder-Einheit 7 die Anpresswalze 4 in Richtung Warenführungswalze 3, bis Berührungskontakt vorliegt. Der Positionsschalter 8a sendet der Steuerung 10 über die Steuerleitung 8c das Signal "Zweite Kolben-Zylinder-Einheit eingefahren". Damit ist in der Steuerung die Betriebsposition der Anpresswalze registriert.The second piston-cylinder unit 8 retracts and moves via the lever 9 and the rigidly extended first piston-cylinder unit 7, the pressure roller 4 in the direction of the goods guide roller 3, to contact exists. The position switch 8a sends the controller 10 via the control line 8c the signal "second piston-cylinder unit retracted". Thus, the operating position of the pressure roller is registered in the controller.

Der Druck P2 wird so eingestellt, dass sich die gewünschte Anpresskraft zwischen den Walzen ergibt. Der Druck P1 ist höher als der Druck P2. So wird erreicht, dass die ausgefahrene Kolben-Zylinder-Einheit 7 im Betrieb wie eine starre Verbindung wirkt und nur der Druck P2 die Anpresskraft zwischen den Walzen bestimmt.The pressure P2 is adjusted so that the desired contact pressure between the rollers results. The pressure P1 is higher than the pressure P2. This ensures that the extended piston-cylinder unit 7 acts like a rigid connection in operation and only the pressure P2 determines the contact pressure between the rollers.

Erhält die Steuerung 10 vom Bediener der Anlage das Signal zum Wegfahren der Anpresswalze 4, dann sendet die Steuerung ein Signal über die Signalleitung 11a zum Steuerventil 11. Das Steuerventil 11 wird betätigt und die erste Kolben-Zylinder-Einheit 7 wird derart mit Druckluft beaufschlagt, dass der Kolben einfährt und die Anpresswalze 4 von der Warenführungswalze 3 wegbewegt. Beim Endanschlag des Kolbens der ersten Kolben-Zylinder-Einheit 7 wirkt die zweite Kolben-Zylinder-Einheit 8 als Stoßdämpfer. Der Positionsschalter 7a gibt über die Steuerleitung 7c ein Signal an die Steuerung 10, sobald die erste Kolben-Zylinder-Einheit 7 vollständig eingefahren ist.If the controller 10 receives the signal to drive away the pressure roller 4 from the operator of the system, then the controller sends a signal via the signal line 11a to the control valve 11. The control valve 11 is actuated and compressed air is applied to the first piston-cylinder unit 7, that the piston retracts and the pressure roller 4 moves away from the goods guide roller 3. At the end stop of the piston of the first piston-cylinder unit 7, the second piston-cylinder unit 8 acts as a shock absorber. The position switch 7a outputs via the control line 7c a signal to the controller 10, as soon as the first piston-cylinder unit 7 is fully retracted.

Die Steuerung 10 gibt darauf hin ein Signal an das zweite Steuerventil 12 über die Steuerleitung 12b. Das Steuerventil 12 wird betätigt und die zweite Kolben-Zylinder-Einheit 8 wird über die Druckleitung 18b derart mit Druckluft beaufschlagt, dass der Kolben ausfährt.The controller 10 then outputs a signal to the second control valve 12 via the control line 12b. The control valve 12 is actuated and the second piston-cylinder unit 8 is pressurized via the pressure line 18b in such a way that the piston extends.

Claims (1)

  1. Apparatus for applying a rotationally driven pressure roller (4) onto a rotationally driven goods guiding roller (3), especially in a stretching equipment for thermoplastic films, which pressure roller (4) is supported in carrier arms (6) that are spaced apart from one another, and whereby each carrier arm is rigidly connected with the guide carriages (5a) of at least one equipment-fixed linear guide unit (5), characterized in that at least one first piston-cylinder unit (7) for advancing the pressure roller (4) is provided, which establishes an operative connection between the carrier arms (6) and a lever (9) that is pivotably moveable about an equipment-fixed rotation point (9a), in that a second piston-cylinder unit (8) for carrying out the axis-parallel remaining stroke between the pressure roller (4) and the goods guiding roller (3) and for exerting the nominal pressing force is provided, which is operatively connected on the one hand with an equipment-fixed point and on the other hand with the lever (9), in that an electronic controller (10) is provided for controlling the pressurization of the piston-cylinder units (7,8), with which controller a first control valve (11) allocated to the first piston-cylinder unit (7) and a second control valve (12) allocated to the second piston-cylinder unit (8) is connected in a signal transmitting manner, and in that the electronic controller (10) is further connected in a signal transmitting manner with position switches (7a,7b,8a,8b) that are allocated to the piston-cylinder units (7,8).
EP06705840A 2005-02-01 2006-01-23 Method and device for applying a pressure roller to a goods guiding roller Active EP1843960B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005004814.5A DE102005004814B4 (en) 2005-02-01 2005-02-01 Method and device for applying a pressure roller to a goods guide roller
PCT/DE2006/000103 WO2006081792A1 (en) 2005-02-01 2006-01-23 Method and device for applying a pressure roller to a goods guiding roller

Publications (2)

Publication Number Publication Date
EP1843960A1 EP1843960A1 (en) 2007-10-17
EP1843960B1 true EP1843960B1 (en) 2011-07-06

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Application Number Title Priority Date Filing Date
EP06705840A Active EP1843960B1 (en) 2005-02-01 2006-01-23 Method and device for applying a pressure roller to a goods guiding roller

Country Status (8)

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US (1) US7731070B2 (en)
EP (1) EP1843960B1 (en)
JP (1) JP4680269B2 (en)
KR (1) KR100939903B1 (en)
CN (1) CN101111440B (en)
AT (1) ATE515468T1 (en)
DE (1) DE102005004814B4 (en)
WO (1) WO2006081792A1 (en)

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DE102005026506B4 (en) * 2005-06-09 2007-09-20 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Method and device for controlling the synchronization of pressurisable piston-cylinder units when applying a pressure roller
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CN102848716B (en) * 2012-09-19 2015-11-18 中国烟草总公司贵州省公司 Flue-cured tobacco mulch film spacing in the rows labelling apparatus
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Also Published As

Publication number Publication date
DE102005004814B4 (en) 2014-02-13
WO2006081792A1 (en) 2006-08-10
JP4680269B2 (en) 2011-05-11
US20080149680A1 (en) 2008-06-26
DE102005004814A1 (en) 2006-08-17
KR100939903B1 (en) 2010-02-03
ATE515468T1 (en) 2011-07-15
CN101111440B (en) 2010-05-26
KR20070100815A (en) 2007-10-11
CN101111440A (en) 2008-01-23
EP1843960A1 (en) 2007-10-17
US7731070B2 (en) 2010-06-08
JP2008528407A (en) 2008-07-31

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