EP1155830A2 - Means for applying a pressure force a printing press cylinder and printing machine with such a means - Google Patents

Means for applying a pressure force a printing press cylinder and printing machine with such a means Download PDF

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Publication number
EP1155830A2
EP1155830A2 EP01111492A EP01111492A EP1155830A2 EP 1155830 A2 EP1155830 A2 EP 1155830A2 EP 01111492 A EP01111492 A EP 01111492A EP 01111492 A EP01111492 A EP 01111492A EP 1155830 A2 EP1155830 A2 EP 1155830A2
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EP
European Patent Office
Prior art keywords
force
contact pressure
generating element
printing
roller
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
EP01111492A
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German (de)
French (fr)
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EP1155830B1 (en
EP1155830A3 (en
Inventor
Lennardt Jader
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
NexPress Solutions LLC
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Filing date
Publication date
Priority claimed from DE10059889A external-priority patent/DE10059889A1/en
Application filed by NexPress Solutions LLC filed Critical NexPress Solutions LLC
Publication of EP1155830A2 publication Critical patent/EP1155830A2/en
Publication of EP1155830A3 publication Critical patent/EP1155830A3/en
Application granted granted Critical
Publication of EP1155830B1 publication Critical patent/EP1155830B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/32—Bearings mounted on swinging supports

Definitions

  • the invention relates to a device for loading a roller of a printing technology Machine with a contact pressure and a printing machine with such Contraption.
  • rollers In the case of printing machines, rollers often have to be applied with a contact pressure be, and in many cases it is crucial for the print quality that the Contact force is constant across the width of such a roller.
  • rollers which are used by a substrate conveyed printing substrates against the cylinders of several printing modules Press to make the part-color images generated by the print modules as even as possible and to be transferred to the printing substrates in exact register.
  • pressure rollers either individually Pressing springs against the cylinders or the pressure rollers all on one support element to arrange and to apply this to springs so that the pressure rollers pressed together against the cylinders.
  • the Contact force generated by a corresponding force from the springs is transferred to displaceably arranged bearings of the pressure rollers.
  • a constant Contact pressure across the width of the rollers is not, however, satisfactory Way achievable, especially not if this is due to a required high Print quality in a very precise way is required.
  • the invention is therefore based on the object of a device at the outset mentioned type in such a way that a constant contact pressure with little effort can be achieved across the width of the rollers.
  • the object is achieved in that the roller at one end two two-armed lever is rotatably mounted that the two-armed lever on side parts are rotatably mounted and that at the other ends of the two-armed lever one Cross connection is arranged to the at least one force-generating element attacks.
  • the lever transmission of the forces according to the invention distributes them evenly on the respective roller. This also includes inaccuracies in dimensions by rollers or the elements interacting with them, as well Shocks that occur, for example, from the front or rear edges of printing substrates.
  • the force-generating element can be designed in various ways.
  • On Proposal provides that the force-generating element to apply a permanent Force is formed, which is dimensioned such that the two-armed lever the contact pressure arises.
  • it can create a permanent force that the force-generating element is a weight.
  • a force generated in this way is always constant, shows hardly any position-dependent differences and no hysteresis, as is the case with springs.
  • the force-generating element for the counteracting force is expedient a pneumatic cylinder.
  • this is like starting and stopping a roller well controllable and can be designed such that it simultaneously as Damping element works. This way the occurrence of vibrations prevents, for example, those caused by printing substrate leading or trailing edges could be stimulated.
  • variable force is formed, which is adjustable such that a desired contact pressure can be achieved.
  • variable force is too adjustable so that the contact pressure can be switched off, that is, the roller with it interacting element can be moved away. This also serves to prevent this the deformation of surfaces mentioned above.
  • a force-generating element is arranged centrally on the cross-connection, then easily achieved a very constant contact force along a roller.
  • variable force is also preferably generated by means of a pneumatic cylinder, with which various forces such as starting and stopping a roller can be easily achieved are.
  • the pneumatic cylinder has a good damping effect achieve.
  • cross connection is designed as a resilient element, one becomes special good absorption of shocks and pressure fluctuations as well as a very good compensation achieved by inaccuracies. It also serves this purpose if the cross connection is rotatably connected to the levers, the cross connection parallel to the roller should run.
  • damping elements can of course also be arranged.
  • One It also serves to prevent vibrations when the bearings of the levers in the Side parts are designed as plain bearings.
  • the side panels can have housing walls or be separate components that are connected to the housing walls.
  • a particularly useful application of the device provides for this Use pressure of the pressure rollers, whereby the contact pressure is generated, the required for optimal transfer of partial color images to a printing substrate is.
  • the aforementioned purpose is particularly important, because the uniform and precise force setting for the print quality is crucial Role play. Therefore, it is also proposed to use a printing press, in particular an electrophotographic printing machine with an aforementioned device equip, the rollers on a support for printing substrates opposite of cylinders are arranged, which for transferring the partial color images Print substrates are formed.
  • Fig. 1 shows a schematic diagram of the device according to the invention.
  • a roller 1 with a contact pressure 3 this is supported at one end by two two-armed levers 4, 5.
  • the two-armed levers 4, 5 are mounted on side parts 6 and 7 by means of bearings 14.
  • a cross connection 8 At the other ends of the two-armed levers 4, 5 there is a cross connection 8, which is acted upon by a force generating element 9, 9 ', 9 "with a force 10, 10', 10".
  • This can be a force-generating element 9 for generating a permanent force 10, a force-generating element 9 'for generating a force 10' opposite to the permanent force 10, or a force-generating element 9 "for generating a variable force 10".
  • the representation here is symbolic in nature and will be explained in more detail below.
  • the actuating movement of the roller 1 is shown by means of a double arrow 20 and the Adjustment movement of the opposite ends of the levers 4, 5 with the double arrow 21.
  • Forces 10, 10 ', 10 "and actuating movements 20 and 21 are used to engage the roller 1 interacting component, not shown here, with the symbolized by three arrows Apply pressure 3.
  • the three arrows 3 are intended to illustrate that the Contact pressure 3 is evenly distributed over the entire width of the roller. This is the Main purpose of the invention, which is achieved in that the power transmission by means of the two-armed levers 4, 5 in such a way that the roller 1 with uniform Forces is applied.
  • the diagram in FIG. 2 shows a printing press 2 with a carrier 17 for transporting printing substrates 16 through the printing press 2 in the direction of the arrow 31.
  • the printing substrates 16 change from one printing module 19, 19 ', 19 “, 19”' to the other conveyed and thereby printed by cylinders 18, 18 ', 18 ", 18"' of the printing modules 19, 19 ', 19 “, 19”' with partial color images 15, 15 ', 15 ", 15”', which together result in color printing.
  • An exact contact pressure 3 and a vibration-free guidance of the printing substrates 16 are required.
  • the invention proposes rollers 10, 10 ', 10 ", 10"' which are mounted on the principle described above.
  • the carrier 17 is placed over a variety of roles.
  • a roller 22 is used to drive of the carrier 17 in the direction of arrow 23. Another role is by the effect a tensioning roller 25.
  • a roller 26 pivotable transversely to its axis of rotation is for lateral adjustment of the tape run of the carrier 17 is provided.
  • a pulley 27 interacts with a roller 28.
  • the roller 28 is used to hang up Print substrates 16 which are to be printed.
  • Guide rollers 29 cause certain wrapping of cylinders 18, 18 ', 18 ", 18"' corresponding to the partial color images 15, 15 ', 15 ", 15”' a print image in the form of toner particles for transfer wear on the printing substrates 16.
  • the cylinders 15, 15 ', 15 ", 15”' Provide the toner particles directly or via further cylinders (not shown) become.
  • the arrows 32 show the direction of rotation of the cylinders 15, 15 ', 15 ", 15”'.
  • rollers 10, 10 ', 10 ", 10"' designed as pressure rollers are provided, which can be switched on and off on the underside of the carrier 17.
  • Another role 30 is used to remove a printing substrate 16 from the carrier 17.
  • Fig. 3 shows an embodiment of the device according to the invention with force-generating elements 9 and 9 ', which are designed as a weight 11 and as a pneumatic cylinder 12.
  • the weight 11 pulls down and thereby generates the contact pressure 3 of the roller 10.
  • the element 9 ' serves to generate the counterforce 10' to regulate this contact pressure 3 or to switch off the contact pressure.
  • This element 9 ' is designed as a pneumatic cylinder 12.
  • the actuating movement of the pneumatic cylinder 12 is shown by means of the double arrow 34. If the pneumatic cylinder 12 is not active, the contact pressure 3 is generated by the weight 11.
  • the two two-armed levers 4, 5 are attached to side parts 6, 7, which are connected to one another by cross struts 33. In this way, the device is designed such that it can be used as a whole in a machine, for example by fastening the side parts 6, 7 in the machine.
  • the other functions and the other components reference is made to the basic diagrams above.
  • FIG. 4 shows a further exemplary embodiment of the invention, in which an element 9 "for generating a variable force 10" is arranged.
  • This element is a pneumatic cylinder 13, which is arranged in the middle of the cross connection 8.
  • the cross connection 8 is rotatably suspended on the two-armed levers 4, 5 and has spring properties. These measures result in a very good distribution of force and absorption of shocks and other stresses.
  • the levers 4, 5 are supported by means of bearings 14 in side parts 6, 7, which are connected to one another by means of cross struts 33.
  • the actuating movement of the pneumatic cylinder 13 is indicated by the double arrow 34.
  • the pneumatic cylinder 13 applies the entire force required to set the contact pressure 3.
  • the pneumatic cylinder 13 is designed such that it can turn the roller 10 on and off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Unwinding Webs (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Color Electrophotography (AREA)

Abstract

The roller (1) is mounted rotatable at the one end of two two-armed levers (4, 5) and the levers are mounted rotatable on side parts (6, 7). A cross connection (8) is mounted at the other ends of the levers so that a force-generating element (9) such as a weight (11) engages on the cross connection and applies a permanent force of such dimension that the contact pressure force is produced through the double armed levers.

Description

Die Erfindung betrifft eine Vorrichtung zur Beaufschlagung einer Walze einer drucktechnischen Maschine mit einer Anpreßkraft und eine Druckmaschine mit einer derartigen Vorrichtung.The invention relates to a device for loading a roller of a printing technology Machine with a contact pressure and a printing machine with such Contraption.

Bei drucktechnischen Maschinen müssen Walzen oft mit einer Anpreßkraft beaufschlagt werden, wobei es in vielen Fällen für die Druckqualität entscheidend ist, daß die Anpreßkraft über die Breite einer solchen Walze gesehen konstant ist.In the case of printing machines, rollers often have to be applied with a contact pressure be, and in many cases it is crucial for the print quality that the Contact force is constant across the width of such a roller.

Ein wichtiges Beispiel für derartige Walzen sind Andrückwalzen, die dazu dienen, von einem Träger geförderte Drucksubstrate gegen die Zylinder mehrerer Druckmodule zu drücken, um die von den Druckmodulen erzeugten Teilfarbenbilder möglichst gleichmäßig und registergenau auf die Drucksubstrate zu übertragen.An important example of such rollers are pressure rollers, which are used by a substrate conveyed printing substrates against the cylinders of several printing modules Press to make the part-color images generated by the print modules as even as possible and to be transferred to the printing substrates in exact register.

Für den vorgenannten Zweck ist es bekannt, Andrückwalzen entweder einzeln mittels Federn gegen die Zylinder zu drücken oder die Andrückwalzen alle auf einem Tragelement anzuordnen und dieses mit Federn zu beaufschlagen, damit die Andrückwalzen gemeinsam gegen die Zylinder gedrückt werden. Bei beiden Anordnungen wird die Anpreßkraft dadurch erzeugt, daß von den Federn unmittelbar eine entsprechende Kraft auf verschiebbar angeordnete Lager der Andrückwalzen übertragen wird. Eine konstante Anpreßkraft über die Breite der Walzen ist dadurch jedoch nicht in befriedigender Weise erzielbar, insbesondere dann nicht, wenn diese wegen einer geforderten hohen Druckqualität in sehr präziser Weise erforderlich ist. For the aforementioned purpose, it is known to use pressure rollers either individually Pressing springs against the cylinders or the pressure rollers all on one support element to arrange and to apply this to springs so that the pressure rollers pressed together against the cylinders. In both arrangements, the Contact force generated by a corresponding force from the springs is transferred to displaceably arranged bearings of the pressure rollers. A constant Contact pressure across the width of the rollers is not, however, satisfactory Way achievable, especially not if this is due to a required high Print quality in a very precise way is required.

Weiterhin ist es bekannt, an verschiebbar angeordneten Lagern von Walzen aktive Aktuatoren einzusetzen, welche diese unmittelbare Kraftbeaufschlagung übernehmen. Damit ist es zwar möglich, über die Breite der Walzen eine wesentlich konstantere Anpreßkraft zu erzielen, jedoch muß dazu ein großer Aufwand an teurer Sensorik und Steuerung betrieben werden.Furthermore, it is known to be active on displaceably arranged bearings of rollers Use actuators that take over this direct application of force. This makes it possible to have a much more constant width across the rolls To achieve contact pressure, however, this requires a large amount of expensive sensors and Control operated.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art derart auszubilden, daß mit geringem Aufwand eine konstante Anpreßkraft über die Breite der Walzen erzielbar ist.The invention is therefore based on the object of a device at the outset mentioned type in such a way that a constant contact pressure with little effort can be achieved across the width of the rollers.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Walze an den einen Enden zweier zweiarmiger Hebel drehbar gelagert ist, daß die zweiarmigen Hebel an Seitenteilen drehbar gelagert sind und daß an den anderen Enden der zweiarmigen Hebel eine Querverbindung angeordnet ist, an die mindestens ein krafterzeugendes Element angreift.The object is achieved in that the roller at one end two two-armed lever is rotatably mounted that the two-armed lever on side parts are rotatably mounted and that at the other ends of the two-armed lever one Cross connection is arranged to the at least one force-generating element attacks.

Durch die erfindungsgemäße Hebelübertragung der Kräfte verteilen sich diese gleichmäßig auf die jeweilige Walze. Dabei werden auch Ungenauigkeiten der Abmessungen von Walzen oder den mit diesen zusammenwirkenden Elementen aufgenommen, ebenso Stöße, die beispielsweise durch Vorder- oder Hinterkanten von Drucksubstraten entstehen.The lever transmission of the forces according to the invention distributes them evenly on the respective roller. This also includes inaccuracies in dimensions by rollers or the elements interacting with them, as well Shocks that occur, for example, from the front or rear edges of printing substrates.

Diese Vorteile werden durch Weiterbildungen und zweckmäßige Ausgestaltungen in noch besserer Weise erzielt, auf weitere Vorteile wird verwiesen.These advantages are shown in further training and practical refinements achieved even better, reference is made to further advantages.

Das krafterzeugende Element kann auf verschiedene Weise ausgebildet werden. Ein Vorschlag sieht vor, daß das krafterzeugende Element zur Aufbringung einer permanenten Kraft ausgebildet ist, die derart bemessen ist, daß über die zweiarmigen Hebel die Anpreßkraft entsteht. Beispielsweise kann eine permanente Kraft dadurch erzeugt werden, daß das krafterzeugende Element ein Gewicht ist. Eine derart erzeugte Kraft ist immer konstant, weist kaum stellungsabhängige Unterschiede und keine Hysterese auf, wie dies bei Federn der Fall ist.The force-generating element can be designed in various ways. On Proposal provides that the force-generating element to apply a permanent Force is formed, which is dimensioned such that the two-armed lever the contact pressure arises. For example, it can create a permanent force that the force-generating element is a weight. A force generated in this way is always constant, shows hardly any position-dependent differences and no hysteresis, as is the case with springs.

Verschiedene Anpreßkräfte lassen sich dadurch einstellen, daß ein weiteres krafterzeugendes Element angeordnet ist, durch das eine der permanenten Kraft entgegenwirkende Kraft erzeugbar ist. Mittels einer derartigen entgegenwirkenden Kraft läßt sich die Anpreßkraft auch abstellen, wenn erstere größer als die Gewichtskraft ist. Eine solche Abstellung hat den Vorteil, daß es bei einem Stillstand der Maschine nicht zu einer bleibenden Deformierung von Oberflächen durch eine längere Zeit fortwirkende Kraftbeaufschlagung kommen kann.Different contact forces can be adjusted by the fact that another force-generating Element is arranged through which one counteracts the permanent force Force can be generated. By means of such an opposing force, the Also turn off the contact pressure if the former is greater than the weight. Such Switching off has the advantage that it does not become permanent when the machine is at a standstill Deformation of surfaces due to a prolonged application of force can come.

Das krafterzeugende Element für die entgegenwirkende Kraft ist zweckmäßigerweise ein Pneumatikzylinder. Dieser ist bezüglich der Anpreßkraft wie eines An- und Abstellens einer Walze gut steuerbar und kann derart ausgebildet sein, daß er gleichzeitig als Dämpfungselement wirkt. Auf diese Weise wird das Auftreten von Schwingungen verhindert, beispielsweise solchen, die durch Drucksubstratvorderkanten oder -hinterkanten angeregt werden könnten.The force-generating element for the counteracting force is expedient a pneumatic cylinder. In terms of the contact pressure, this is like starting and stopping a roller well controllable and can be designed such that it simultaneously as Damping element works. This way the occurrence of vibrations prevents, for example, those caused by printing substrate leading or trailing edges could be stimulated.

Eine alternative Ausgestaltung des krafterzeugenden Elements sieht vor, daß dieses zur Aufbringung einer variablen Kraft ausgebildet ist, wobei diese derart einstellbar ist, daß eine gewünschte Anpreßkraft erzielbar ist. Vorzugsweise ist die variable Kraft auch derart einstellbar, daß die Anpreßkraft abstellbar ist, also die Walze von dem mit ihr zusammenwirkenden Element weggefahren werden kann. Auch dies dient der Verhinderung der bereits oben erwähnten Deformierung von Oberflächen.An alternative embodiment of the force-generating element provides that this for Application of a variable force is formed, which is adjustable such that a desired contact pressure can be achieved. Preferably the variable force is too adjustable so that the contact pressure can be switched off, that is, the roller with it interacting element can be moved away. This also serves to prevent this the deformation of surfaces mentioned above.

Wird ein krafterzeugendes Element an der Querverbindung mittig angeordnet, so wird auf einfache Weise eine sehr konstante Anpreßkraft entlang einer Walze erzielt.If a force-generating element is arranged centrally on the cross-connection, then easily achieved a very constant contact force along a roller.

Auch die variable Kraft wird vorzugsweise mittels eines Pneumatikzylinders erzeugt, mit dem verschiedene Kräfte wie ein An- und Abstellen einer Walze leicht erzielbar sind. Auch in diesem Fall läßt sich durch den Pneumatikzylinder eine gute Dämpfungswirkung erzielen.The variable force is also preferably generated by means of a pneumatic cylinder, with which various forces such as starting and stopping a roller can be easily achieved are. In this case too, the pneumatic cylinder has a good damping effect achieve.

Wird die Querverbindung als federndes Element ausgebildet, so wird eine besonders gute Aufnahme von Stößen und Druckschwankungen sowie ein sehr guter Ausgleich von Ungenauigkeiten erzielt. Diesem Zweck dient es auch, wenn die Querverbindung drehbar mit den Hebeln verbunden ist, wobei die Querverbindung parallel zur Walze verlaufen sollte.If the cross connection is designed as a resilient element, one becomes special good absorption of shocks and pressure fluctuations as well as a very good compensation achieved by inaccuracies. It also serves this purpose if the cross connection is rotatably connected to the levers, the cross connection parallel to the roller should run.

Außer der Ausbildung der vorgenannten Pneumatikzylinder als Dämpfungselemente können selbstverständlich auch separate Dämpfungselemente angeordnet werden. Einer Verhinderung von Schwingungen dient es auch, wenn die Lagerungen der Hebel in den Seitenteilen als Gleitlager ausgebildet sind. Die Seitenteile können Gehäusewandungen oder separate Bauteile sein, die mit den Gehäusewandungen verbunden sind.In addition to the design of the aforementioned pneumatic cylinders as damping elements separate damping elements can of course also be arranged. One It also serves to prevent vibrations when the bearings of the levers in the Side parts are designed as plain bearings. The side panels can have housing walls or be separate components that are connected to the housing walls.

Eine besonders zweckmäßige Anwendung der Vorrichtung sieht vor, diese zum Andrücken der Andrückwalzen zu verwenden, wobei die Anpreßkraft erzeugt wird, die für eine optimale Übertragung von Teilfarbenbildern auf ein Drucksubstrat erforderlich ist. Selbstverständlich gibt es in einer drucktechnischen Maschine noch weitere Einsatzgebiete der Erfindung. Der vorgenannte Einsatzzweck ist jedoch besonders bedeutsam, da die gleichmäßige und präzise Krafteinstellung für die Druckqualität eine ausschlaggebende Rolle spielt. Deshalb wird auch vorgeschlagen, eine Druckmaschine, insbesondere eine elektrophotografische Druckmaschine mit einer vorgenannten Vorrichtung auszustatten, wobei die Walzen an einem Träger für Drucksubstrate gegenüberliegend von Zylindern angeordnet sind, welche zur Übertragung der Teilfarbenbilder auf Drucksubstrate ausgebildet sind.A particularly useful application of the device provides for this Use pressure of the pressure rollers, whereby the contact pressure is generated, the required for optimal transfer of partial color images to a printing substrate is. Of course there are other areas of application in a printing machine the invention. However, the aforementioned purpose is particularly important, because the uniform and precise force setting for the print quality is crucial Role play. Therefore, it is also proposed to use a printing press, in particular an electrophotographic printing machine with an aforementioned device equip, the rollers on a support for printing substrates opposite of cylinders are arranged, which for transferring the partial color images Print substrates are formed.

Die vorgenannten Ausgestaltungen sind selbstverständlich nur beispielhaft. Beispielsweise können auch andere dem Fachmann bekannte krafterzeugende Elemente eingesetzt werden. The aforementioned configurations are of course only examples. For example other force-generating elements known to the person skilled in the art can also be used become.

Die Erfindung wird nachfolgend anhand der Zeichnung erläutert. Es zeigen

Fig. 1
eine Prinzipskizze der erfindungsgemäßen Vorrichtung,
Fig. 2
ein Schema einer Druckmaschine mit Transport der Drucksubstrate mittels eines Trägers,
Fig. 3
ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung und
Fig. 4
ein weiteres Ausführungsbeispiel der erfindungsgemäßen Vorrichtung.
The invention is explained below with reference to the drawing. Show it
Fig. 1
a schematic diagram of the device according to the invention,
Fig. 2
1 shows a diagram of a printing press with transport of the printing substrates by means of a carrier,
Fig. 3
an embodiment of the device according to the invention and
Fig. 4
another embodiment of the device according to the invention.

Fig. 1 zeigt eine Prinzipskizze der erfindungsgemäßen Vorrichtung. Zur Beaufschlagung einer Walze 1 mit einer Anpreßkraft 3 ist diese an den einen Enden von zwei zweiarmigen Hebeln 4, 5 gelagert. Die zweiarmigen Hebel 4, 5 sind mittels Lagerungen 14 an Seitenteilen 6 und 7 gelagert. An den anderen Enden der zweiarmigen Hebel 4, 5 befindet sich eine Querverbindung 8, welche durch ein krafterzeugendes Element 9, 9', 9" mit einer Kraft 10, 10', 10" beaufschlagt wird. Dabei kann es sich um ein krafterzeugendes Element 9 zur Erzeugung einer permanenten Kraft 10, um ein krafterzeugendes Element 9' zur Erzeugung einer der permanenten Kraft 10 entgegengerichteten Kraft 10' oder um ein krafterzeugendes Element 9" zur Erzeugung einer variablen Kraft 10" handeln. Die Darstellung ist hier symbolischer Natur, sie wird weiter unten noch näher ausgeführt. Fig. 1 shows a schematic diagram of the device according to the invention. To act on a roller 1 with a contact pressure 3, this is supported at one end by two two-armed levers 4, 5. The two-armed levers 4, 5 are mounted on side parts 6 and 7 by means of bearings 14. At the other ends of the two-armed levers 4, 5 there is a cross connection 8, which is acted upon by a force generating element 9, 9 ', 9 "with a force 10, 10', 10". This can be a force-generating element 9 for generating a permanent force 10, a force-generating element 9 'for generating a force 10' opposite to the permanent force 10, or a force-generating element 9 "for generating a variable force 10". The representation here is symbolic in nature and will be explained in more detail below.

Die Stellbewegung der Walze 1 ist mittels eines Doppelpfeils 20 eingezeichnet und die Stellbewegung der gegenüberliegenden Enden der Hebel 4, 5 mit dem Doppelpfeil 21. Kräfte 10, 10', 10" und Stellbewegungen 20 und 21 dienen dazu, ein mit der Walze 1 zusammenwirkendes, hier nicht dargestelltes Bauteil mit der durch drei Pfeile symbolisierten Anpreßkraft 3 zu beaufschlagen. Die drei Pfeile 3 sollen verdeutlichen, daß die Anpreßkraft 3 über die gesamte Breite der Walze gleichmäßig verteilt ist. Dies ist der Hauptzweck der Erfindung, welcher dadurch erzielt wird, daß die Kraftübertragung mittels der zweiarmigen Hebel 4, 5 derart erfolgt, daß die Walze 1 mit gleichmäßigen Kräften beaufschlagt wird.The actuating movement of the roller 1 is shown by means of a double arrow 20 and the Adjustment movement of the opposite ends of the levers 4, 5 with the double arrow 21. Forces 10, 10 ', 10 "and actuating movements 20 and 21 are used to engage the roller 1 interacting component, not shown here, with the symbolized by three arrows Apply pressure 3. The three arrows 3 are intended to illustrate that the Contact pressure 3 is evenly distributed over the entire width of the roller. this is the Main purpose of the invention, which is achieved in that the power transmission by means of the two-armed levers 4, 5 in such a way that the roller 1 with uniform Forces is applied.

Das Schema in Fig. 2 zeigt eine Druckmaschine 2 mit einem Träger 17 zum Transport von Drucksubstraten 16 durch die Druckmaschine 2 in Richtung des Pfeils 31. Dabei werden die Drucksubstrate 16 von einem Druckmodul 19, 19', 19", 19"' zum anderen befördert und dabei von Zylindern 18, 18', 18", 18"' der Druckmodule 19, 19', 19", 19"' mit Teilfarbenbildern 15, 15', 15", 15"' bedruckt, welche gemeinsam den Farbdruck ergeben. Dabei ist ein exakter Anpreßdruck 3 und eine schwingungsfreie Führung der Drucksubstrate 16 erforderlich. Zu diesem Zweck schlägt die Erfindung Walzen 10, 10', 10", 10"' vor, die nach dem oben dargestellten Prinzip gelagert sind.The diagram in FIG. 2 shows a printing press 2 with a carrier 17 for transporting printing substrates 16 through the printing press 2 in the direction of the arrow 31. The printing substrates 16 change from one printing module 19, 19 ', 19 ", 19"' to the other conveyed and thereby printed by cylinders 18, 18 ', 18 ", 18"' of the printing modules 19, 19 ', 19 ", 19"' with partial color images 15, 15 ', 15 ", 15"', which together result in color printing. An exact contact pressure 3 and a vibration-free guidance of the printing substrates 16 are required. For this purpose, the invention proposes rollers 10, 10 ', 10 ", 10"' which are mounted on the principle described above.

Der Träger 17 ist über eine Vielzahl von Rollen gelegt. Eine Rolle 22 dient zum Antrieb des Trägers 17 in Richtung des Pfeiles 23. Eine weitere Rolle dient durch die Wirkung einer Spannrolle 25. Eine quer zu ihrer Drehachse schwenkbare Rolle 26 ist zur seitlichen Einstellung des Bandlaufs des Trägers 17 vorgesehen. Eine Umlenkrolle 27 wirkt mit einer Rolle 28 zusammen. Die Rolle 28 dient zum Auflegen von Drucksubstraten 16, welche bedruckt werden sollen. Führungsrollen 29 bewirken ein gewisses Umschlingen von Zylindern 18, 18', 18", 18"', die entsprechend den Teilfarbenbildern 15, 15', 15", 15"' ein Druckbild in Form von Tonerpartikeln zur Übertragung auf die Drucksubstrate 16 tragen. Dabei können die Zylinder 15, 15', 15", 15"' unmittelbar oder über weitere Zylinder (nicht dargestellt) mit den Tonerpartikeln versehen werden. Die Pfeile 32 zeigen die Drehrichtung der Zylinder 15, 15', 15", 15"'.The carrier 17 is placed over a variety of roles. A roller 22 is used to drive of the carrier 17 in the direction of arrow 23. Another role is by the effect a tensioning roller 25. A roller 26 pivotable transversely to its axis of rotation is for lateral adjustment of the tape run of the carrier 17 is provided. A pulley 27 interacts with a roller 28. The roller 28 is used to hang up Print substrates 16 which are to be printed. Guide rollers 29 cause certain wrapping of cylinders 18, 18 ', 18 ", 18"' corresponding to the partial color images 15, 15 ', 15 ", 15"' a print image in the form of toner particles for transfer wear on the printing substrates 16. The cylinders 15, 15 ', 15 ", 15"' Provide the toner particles directly or via further cylinders (not shown) become. The arrows 32 show the direction of rotation of the cylinders 15, 15 ', 15 ", 15"'.

Damit während des Druckbetriebes eine definierte Pressung zwischen dem Träger 17 mit dem darauf befindlichen Drucksubstraten 16 und den Zylindern 18, 18', 18", 18"' vorhanden ist, sind als Andrückwalzen ausgebildete Walzen 10, 10', 10", 10"' vorgesehen, die an die Unterseite des Trägers 17 an- und abstellbar sind. Eine weitere Rolle 30 dient zur Abnahme eines Drucksubstrats 16 vom Träger 17. So that a defined pressure between the carrier 17 during printing operation with the printing substrates 16 thereon and the cylinders 18, 18 ', 18 ", 18"' is present, rollers 10, 10 ', 10 ", 10"' designed as pressure rollers are provided, which can be switched on and off on the underside of the carrier 17. Another role 30 is used to remove a printing substrate 16 from the carrier 17.

Fig. 3 zeigt ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung mit krafterzeugenden Elementen 9 und 9', die als Gewicht 11 und als Pneumatikzylinder 12 ausgebildet sind. Das Gewicht 11 zieht nach unten und erzeugt dadurch die Anpreßkraft 3 der Walze 10. Zur Regulierung dieser Anpreßkraft 3 oder zur Abstellung der Anpressung dient das Element 9' zur Erzeugung der Gegenkraft 10'. Dieses Element 9' ist als Pneumatikzylinder 12 ausgebildet. Die Stellbewegung des Pneumatikzylinders 12 ist mittels des Doppelpfeils 34 eingezeichnet. Ist der Pneumatikzylinder 12 nicht aktiv, so wird die Anpreßkraft 3 durch das Gewicht 11 erzeugt. Die beiden zweiarmigen Hebel 4, 5 sind an Seitenteilen 6, 7 befestigt, welche durch Querstreben 33 miteinander verbunden sind. Auf diese Weise ist die Vorrichtung derart ausgebildet, daß sie als Gesamtes in eine Maschine eingesetzt werde kann, indem beispielsweise die Seitenteile 6, 7 in der Maschine befestigt werden. Bezüglich der übrigen Funktionen und der übrigen Bauteile wird auf die obigen Prinzipdarstellungen verwiesen. Fig. 3 shows an embodiment of the device according to the invention with force-generating elements 9 and 9 ', which are designed as a weight 11 and as a pneumatic cylinder 12. The weight 11 pulls down and thereby generates the contact pressure 3 of the roller 10. The element 9 'serves to generate the counterforce 10' to regulate this contact pressure 3 or to switch off the contact pressure. This element 9 'is designed as a pneumatic cylinder 12. The actuating movement of the pneumatic cylinder 12 is shown by means of the double arrow 34. If the pneumatic cylinder 12 is not active, the contact pressure 3 is generated by the weight 11. The two two-armed levers 4, 5 are attached to side parts 6, 7, which are connected to one another by cross struts 33. In this way, the device is designed such that it can be used as a whole in a machine, for example by fastening the side parts 6, 7 in the machine. Regarding the other functions and the other components, reference is made to the basic diagrams above.

Fig. 4 zeigt ein weiteres Ausführungsbeispiel der Erfindung, bei der ein Element 9" zur Erzeugung einer variablen Kraft 10" angeordnet ist. Dieses Element ist ein Pneumatikzylinder 13, welcher in der Mitte der Querverbindung 8 angeordnet ist. Die Querverbindung 8 ist drehbar an den zweiarmigen Hebeln 4, 5 aufgehängt und weist Federeigenschaften auf. Durch diese Maßnahmen kommt es zu einer sehr guten Kraftverteilung und zu einer Aufnahme von Stößen und sonstigen Beanspruchungen. Bei dieser Ausgestaltung ist es wichtig, daß der Pneumatikzylinder 13 dämpfende Eigenschaften aufweist. Auch hier sind die Hebel 4, 5 mittels Lagerungen 14 in Seitenteilen 6, 7 gelagert, welche mittels Querstreben 33 miteinander verbunden sind. Die Stellbewegung des Pneumatikzylinders 13 ist durch den Doppelpfeil 34 angezeigt. In diesem Fall bringt der Pneumatikzylinder 13 die gesamte Kraft auf, die erforderlich ist, um die Anpreßkraft 3 einzustellen. Weiterhin ist der Pneumatikzylinder 13 derart ausgebildet, daß er die Walze 10 an- und abstellen kann. Auch hier wird bezüglich weiterer Elemente und Funktionen auf die oben genannte Prinzipdarstellung verwiesen. FIG. 4 shows a further exemplary embodiment of the invention, in which an element 9 "for generating a variable force 10" is arranged. This element is a pneumatic cylinder 13, which is arranged in the middle of the cross connection 8. The cross connection 8 is rotatably suspended on the two-armed levers 4, 5 and has spring properties. These measures result in a very good distribution of force and absorption of shocks and other stresses. In this embodiment, it is important that the pneumatic cylinder 13 have damping properties. Here, too, the levers 4, 5 are supported by means of bearings 14 in side parts 6, 7, which are connected to one another by means of cross struts 33. The actuating movement of the pneumatic cylinder 13 is indicated by the double arrow 34. In this case, the pneumatic cylinder 13 applies the entire force required to set the contact pressure 3. Furthermore, the pneumatic cylinder 13 is designed such that it can turn the roller 10 on and off. Here, too, reference is made to the basic illustration mentioned above for further elements and functions.

BezugszeichenlisteReference list

1, 1', 1", 1"'1, 1 ', 1 ", 1"'
WalzenRollers
22nd
drucktechnische Maschine, insbesondere Druckmaschineprinting machine, in particular printing machine
33rd
AnpreßkraftContact pressure
4, 54, 5
zweiarmige Hebeltwo-armed lever
6, 76, 7
SeitenteileSide panels
88th
QuerverbindungCross-connection
9, 9', 9"9, 9 ', 9 "
krafterzeugendes Elementforce-generating element
99
Element mit permanenter KraftElement with permanent strength
9'9 '
Element mit GegenkraftElement with counterforce
9"9 "
Element mit variabler KraftVariable force element
10, 10', 10"10, 10 ', 10 "
Kraftforce
1010th
permanente Kraftpermanent strength
10'10 '
der permanenten Kraft entgegenwirkende Kraftforce counteracting the permanent force
10"10 "
variable Kraftvariable force
1111
GewichtWeight
1212th
Pneumatikzylinder für die Erzeugung der entgegenwirkenden KraftPneumatic cylinder for generating the counteracting force
1313
Pneumatikzylinder für die Erzeugung einer variablen KraftPneumatic cylinder for the generation of a variable force
1414
Lagerungen der Hebel in den SeitenteilenBearings of the levers in the side parts
15, 15', 15", 15'''15, 15 ', 15 ", 15 '' '
TeilfarbenbilderPart color images
1616
Drucksubstrat Printing substrate
1717th
Trägercarrier
18, 18' 18", 18"'18, 18 ' 18 ", 18" '
Zylinder zur Übertragung der Teilfarbenbilder auf DrucksubstrateCylinder for transferring the partial color images to printing substrates
19, 19' 19", 19"'19, 19 ' 19 ", 19" '
DruckmodulePrinting modules
2020th
Stellbewegungen der WalzeAdjustment movements of the roller
2121
Stellbewegungen der gegenüberliegenden Enden der HebelAdjustment movements of the opposite ends of the levers
2222
Rolle für AntriebRoller for drive
2323
Pfeil: Antriebsrichtung des TrägersArrow: drive direction of the carrier
2525th
SpannrolleIdler pulley
2626
Rolle zur seitlichen Einstellung des TrägersRoller for lateral adjustment of the carrier
2727
UmlenkrollePulley
2828
Rolle zum Auflegen von DrucksubstratenRoll for printing substrates
2929
FührungsrollenLeadership roles
3030th
Rolle zur Abnahme eines DrucksubstratesRoll for removing a printing substrate
3131
Pfeil: Transport der DrucksubstrateArrow: Transport of the printing substrates
3232
Pfeile: Drehrichtung der ZylinderArrows: Direction of rotation of the cylinders
3333
QuerstrebenCross struts
3434
Doppelpfeil: Stellbewegung des PneumatikzylindersDouble arrow: actuating movement of the pneumatic cylinder

Claims (18)

Vorrichtung zur Beaufschlagung einer Walze (1, 1', 1", 1"') einer drucktechnischen Maschine (2) mit einer Anpreßkraft (3),
dadurch gekennzeichnet, daß die Walze (1, 1', 1", 1"') an den einen Enden zweier zweiarmiger Hebel (4, 5) drehbar gelagert ist, daß die zweiarmigen Hebel (4, 5) an Seitenteilen (6, 7) drehbar gelagert sind und daß an den anderen Enden der zweiarmigen Hebel (4, 5) eine Querverbindung (8) angeordnet ist, an die mindestens ein krafterzeugendes Element (9, 9', 9") angreift.Device for acting on a roller (1, 1 ', 1 ", 1"') of a printing machine (2) with a contact pressure (3),
characterized in that the roller (1, 1 ', 1 ", 1"') is rotatably mounted on one end of two two-armed levers (4, 5), that the two-armed lever (4, 5) on side parts (6, 7 ) are rotatably mounted and that at the other ends of the two-armed lever (4, 5) a cross connection (8) is arranged, on which at least one force-generating element (9, 9 ', 9 ") engages. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß das krafterzeugende Element (9) zur Aufbringung einer permanenten Kraft (10) ausgebildet ist, die derart bemessen ist, daß über die zweiarmigen Hebel (4, 5) die Anpreßkraft (3) entsteht.Device according to claim 1,
characterized in that the force-generating element (9) is designed to apply a permanent force (10) which is dimensioned such that the pressing force (3) is created via the two-armed levers (4, 5). Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, daß das krafterzeugende Element (9) ein Gewicht (11) ist.Device according to claim 2,
characterized in that the force-generating element (9) is a weight (11). Vorrichtung nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß ein weiteres krafterzeugendes Element (9') angeordnet ist, durch das eine der permanenten Kraft (10) entgegenwirkende Kraft (10') erzeugbar ist. Device according to claim 2 or 3,
characterized in that a further force-generating element (9 ') is arranged, by means of which a force (10') which counteracts the permanent force (10) can be generated. Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet, daß die entgegenwirkende Kraft (10') der Einstellung der Anpreßkraft (3) dient.Device according to claim 4,
characterized in that the counteracting force (10 ') serves to adjust the contact pressure (3). Vorrichtung nach Anspruch 4 oder 5,
dadurch gekennzeichnet, daß die entgegenwirkende Kraft (10') der Abstellung der Anpreßkraft (3) dient.Device according to claim 4 or 5,
characterized in that the counteracting force (10 ') serves to switch off the contact pressure (3). Vorrichtung nach einem der Ansprüche 4 bis 6,
dadurch gekennzeichnet, daß das krafterzeugende Element (9') ein Pneumatikzylinder (12) ist.Device according to one of claims 4 to 6,
characterized in that the force-generating element (9 ') is a pneumatic cylinder (12). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß das krafterzeugende Element (9") zur Aufbringung einer variablen Kraft (10") ausgebildet ist, wobei diese derart einstellbar ist, daß eine gewünschte Anpreßkraft (3) erzielbar ist.Device according to claim 1,
characterized in that the force-generating element (9 ") is designed to apply a variable force (10"), this being adjustable such that a desired contact pressure (3) can be achieved. Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet, daß die variable Kraft (10") derart einstellbar ist, daß die Anpreßkraft (3) abgestellt ist.Device according to claim 8,
characterized in that the variable force (10 ") is adjustable such that the contact pressure (3) is switched off. Vorrichtung nach Anspruch 8 oder 9,
dadurch gekennzeichnet, daß ein krafterzeugendes Element(9") an der Querverbindung (8) mittig angeordnet ist.Device according to claim 8 or 9,
characterized in that a force-generating element (9 ") is arranged centrally on the cross-connection (8). Vorrichtung nach einem der Ansprüche 8 bis 10,
dadurch gekennzeichnet, daß das krafterzeugende Element (9") ein Pneumatikzylinder (13) ist. Device according to one of claims 8 to 10,
characterized in that the force-generating element (9 ") is a pneumatic cylinder (13). Vorrichtung nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, daß die Querverbindung (8) als federndes Element ausgebildet ist.Device according to one of claims 1 to 11,
characterized in that the cross connection (8) is designed as a resilient element. Vorrichtung nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, daß die Querverbindung (8) drehbar mit den Hebeln (4, 5) verbunden ist.Device according to one of claims 1 to 12,
characterized in that the cross-connection (8) is rotatably connected to the levers (4, 5). Vorrichtung nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß Dämpfüngselemente zur Dämpfung von Walzenschwingungen angeordnet sind.Device according to one of claims 1 to 13,
characterized in that damping elements for damping roller vibrations are arranged. Vorrichtung nach einem der Ansprüche 7 oder 11 bis 14,
dadurch gekennzeichnet, daß der Pneumatikzylinder (12 oder 13) als Dämpfungselement wirkend ausgebildet ist.Device according to one of claims 7 or 11 to 14,
characterized in that the pneumatic cylinder (12 or 13) is designed to act as a damping element. Vorrichtung nach einem der Ansprüche 1 bis 15,
dadurch gekennzeichnet, daß die Lagerungen (14) der Hebel (4, 5) in den Seitenteilen (6, 7) als Gleitlager ausgebildet sind.Device according to one of claims 1 to 15,
characterized in that the bearings (14) of the levers (4, 5) in the side parts (6, 7) are designed as plain bearings. Vorrichtung nach einem der Ansprüche 1 bis 16,
dadurch gekennzeichnet, daß die Walzen (1, 1', 1", 1"') Andrückwalzen zur Erzeugung der Anpreßkraft (3) für die Übertragung von Teilfarbenbildern (15, 15', 15", 15"') auf ein Drucksubstrat (16) sind und die Anpreßkraft (3) zur Bewirkung dieser Übertragung bemessen ist. Device according to one of claims 1 to 16,
characterized in that the rollers (1, 1 ', 1 ", 1"') pressure rollers for generating the contact pressure (3) for the transfer of partial color images (15, 15 ', 15 ", 15"') to a printing substrate (16 ) and the contact pressure (3) is dimensioned to effect this transmission. Druckmaschine (2), insbesondere elektrophotografische Druckmaschine, mit einer Vorrichtung nach Anspruch 17,
dadurch gekennzeichnet, daß die Walzen (1, 1', 1", 1"') an einem Träger (17) für Drucksubstrate gegenüberliegend von Zylindern (18, 18', 18", 18"') angeordnet sind, welche zur Übertragung der Teilfarbenbilder (15, 15', 15", 15"') auf Drucksubstrate (16) ausgebildet sind.Printing machine (2), in particular electrophotographic printing machine, with a device according to claim 17,
characterized in that the rollers (1, 1 ', 1 ", 1"') are arranged on a support (17) for printing substrates opposite cylinders (18, 18 ', 18 ", 18"') which are used to transmit the Partial color images (15, 15 ', 15 ", 15"') are formed on printing substrates (16).
EP01111492A 2000-05-18 2001-05-11 Printing machine with means for applying a pressure force on a printing press cylinder Expired - Lifetime EP1155830B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10024092 2000-05-18
DE10024092 2000-05-18
DE10059889A DE10059889A1 (en) 2000-05-18 2000-12-01 Device for applying a pressing force to a roller of a printing machine and printing machine with such a device
DE10059889 2000-12-01

Publications (3)

Publication Number Publication Date
EP1155830A2 true EP1155830A2 (en) 2001-11-21
EP1155830A3 EP1155830A3 (en) 2003-01-02
EP1155830B1 EP1155830B1 (en) 2006-05-31

Family

ID=26005707

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EP01111492A Expired - Lifetime EP1155830B1 (en) 2000-05-18 2001-05-11 Printing machine with means for applying a pressure force on a printing press cylinder

Country Status (5)

Country Link
US (1) US20020020314A1 (en)
EP (1) EP1155830B1 (en)
JP (1) JP2002023522A (en)
AT (1) ATE327889T1 (en)
DE (1) DE50109925D1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016215988A1 (en) * 2016-08-25 2018-03-01 Gallus Druckmaschinen Gmbh Machining plant and label printing machine with such a processing plant
DE102016215986A1 (en) * 2016-08-25 2018-03-01 Gallus Druckmaschinen Gmbh Machining plant and label printing machine with such a processing plant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2213130A (en) * 1938-05-21 1940-08-27 American Stay Company Printing press
GB634213A (en) * 1947-04-24 1950-03-15 Astra Ivanowna Sark Improvements relating to multi-colour printing machines
FR1494327A (en) * 1966-07-29 1967-09-08 Heurtey Sa Improvements made to belt tensioning devices or similar product, in continuous treatment facilities
CH493414A (en) * 1968-07-30 1970-07-15 Kleinewefers Soehne J Dancer roll
DE3232484A1 (en) * 1981-09-03 1983-03-10 Basf Ag, 6700 Ludwigshafen Winding device for flat strips

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2213130A (en) * 1938-05-21 1940-08-27 American Stay Company Printing press
GB634213A (en) * 1947-04-24 1950-03-15 Astra Ivanowna Sark Improvements relating to multi-colour printing machines
FR1494327A (en) * 1966-07-29 1967-09-08 Heurtey Sa Improvements made to belt tensioning devices or similar product, in continuous treatment facilities
CH493414A (en) * 1968-07-30 1970-07-15 Kleinewefers Soehne J Dancer roll
DE3232484A1 (en) * 1981-09-03 1983-03-10 Basf Ag, 6700 Ludwigshafen Winding device for flat strips

Also Published As

Publication number Publication date
EP1155830B1 (en) 2006-05-31
ATE327889T1 (en) 2006-06-15
EP1155830A3 (en) 2003-01-02
JP2002023522A (en) 2002-01-23
DE50109925D1 (en) 2006-07-06
US20020020314A1 (en) 2002-02-21

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