EP2650129B1 - Print unit - Google Patents

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Publication number
EP2650129B1
EP2650129B1 EP11007792.2A EP11007792A EP2650129B1 EP 2650129 B1 EP2650129 B1 EP 2650129B1 EP 11007792 A EP11007792 A EP 11007792A EP 2650129 B1 EP2650129 B1 EP 2650129B1
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EP
European Patent Office
Prior art keywords
printing
gear wheels
transfer
drive
transfer cylinders
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EP11007792.2A
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German (de)
French (fr)
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EP2650129A1 (en
Inventor
Peter Knauer
Josef Singler
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Manroland Web Systems GmbH
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Manroland Web Systems GmbH
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Publication of EP2650129A1 publication Critical patent/EP2650129A1/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
    • B41F13/008—Mechanical features of drives, e.g. gears, clutches
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/12—Rotary lithographic machines for offset printing using two cylinders one of which serves two functions, e.g. as a transfer and impression cylinder in perfecting machines

Definitions

  • the invention relates to a printing unit of a web-fed printing press according to the preamble of claim 1.
  • printing units of a web-fed printing press with several printing units are known.
  • Each printing unit of a printing unit of a web press comprises a transfer cylinder, a forme cylinder, an inking unit and preferably a dampening unit, wherein the transfer cylinder is also referred to as a blanket cylinder and the forme cylinder as a plate cylinder.
  • the transfer cylinder of a first printing unit of the printing unit and the transfer cylinder of a second printing unit of the printing unit to form a printing gap for a substrate to be printed roll on each other, in which case the first printing unit and the second printing unit to Print on printing substrate on different sides.
  • the cylinders of the printing couples whose transfer cylinders roll on each other via drive gears in a drive connection, namely such that a positioned on a shaft of the transfer cylinder of the first printing drive gear and on a shaft of the transfer cylinder of the second printing unit positioned drive gear mesh respectively in a positioned on a shaft of the forme cylinder of the respective printing unit drive gear and in the positioned on the shaft of the transfer cylinder of the respective other printing unit drive gear.
  • the one cylinder of the first printing unit or a cylinder of the second printing unit is assigned, all cylinders of the first printing unit and all cylinders of the second printing unit to be driven.
  • the transfer cylinder from a so-called print-on position, in which the same pressure gap for Define printing substrate to be converted into a so-called print-off position, wherein in the print-off position, the axial distance between the transfer cylinders is increased to such an extent, so that a substrate can be guided without contact by the respective printing unit.
  • the transfer cylinder By transferring the transfer cylinder from the print-on position to the print-off position, as already mentioned, the axial distance between the transfer cylinders is increased, whereby then the drive gears of the transfer cylinder out of engagement, so then the drive connection between the transfer cylinders and so that the printing units is canceled.
  • the transfer cylinder by increasing the axial distance between the same from a print-on position to a print-off position can be transferred for each printing unit a separate drive motor kept ready, in which case only the cylinders of the corresponding printing unit via drive gears are in drive connection, the drive connection between the transfer cylinders is permanently canceled.
  • a printing unit with the features of the preamble of claim 1 is made US 2006/225590 A1 known.
  • the present invention has the object to provide a novel printing unit. This object is achieved by a printing unit according to claim 1.
  • the printing unit according to the invention allows the drive of the cylinders of such printing units, the transfer cylinder in the print-on position to form the printing gap for the printing material to roll on each other, on the one hand in the print-on position and on the other hand in the print-off position on a single drive motor.
  • the drive connection between the printing units namely between the transfer cylinders of the same, provided by drive gears.
  • the drive connection between the printing units, namely between the transfer cylinders thereof, is provided by the auxiliary gears, which together with the drive gears of the transfer cylinders are positioned on the shafts of the transfer cylinder.
  • the present invention relates to a printing unit of a web-fed printing press with a plurality of printing units.
  • a printing unit 10 which comprises two printing units 11 and 12, which is designed as a so-called four-cylinder printing unit.
  • the printing unit 10 comprises the Fig. 1a to 2c two printing units 11 and 12, wherein each of the printing units 11 and 12 has a transfer cylinder 13 and 14 and a rolling on the respective transfer cylinder 13 and 14 form cylinder 15 and 16 respectively.
  • the printing units 11 and 12 have the in Fig. 1a to 2c shown printing unit via inking units, not shown, and preferably not shown dampening units.
  • FIG. 1a to 2c shown four-cylinder printing unit 10 roll the transfer cylinders 13 and 14 of the two printing units 11 and 12 in a so-called print-on position, the Fig. 1a to 1c is shown, forming a printing gap 17 for a printing substrate 18 from.
  • the printing material 18 is therefore printed on both sides of the two printing units 11 and 12 of the four-cylinder printing unit 10 shown.
  • Fig. 1a can be seen that in a print-on position of the printing units 11, 12, in which the transfer cylinders 13 and 14 of the same define the printing gap 17 for the substrate to be printed 18, the drive gears of the cylinders 13 to 16 are engaged such a drive gear 21 positioned on a shaft 20 of the transfer cylinder 13 of the printing unit 11 meshes on the one hand with a drive gear 23 positioned on a shaft 22 of the forme cylinder 15 of the same printing unit 11 and on the other with a drive gear 25 positioned on a shaft 24 of the transfer cylinder 14 of the other printing unit 12.
  • the printing units 11 and 12, namely the transfer cylinders 13 and 14 thereof, which define the printing gap 17 for the printing substrate 18 to be printed in the print-on position, are from the print-on position to a print-off position, the in Fig. 2a to 2c is shown, convertible, namely by increasing the axial distance between the transfer cylinders 13 and 14 and thus enlarging the gap 17 between them, so that then the substrate 18 can be transported without contact by the printing unit 10 or promoted.
  • 15 and 16 printing plate changes can then be performed on the forme cylinders, for which it is necessary to drive the cylinders 13, 14, 15 and 16 of the printing units 11 and 12, wherein this driving in the printing unit 10 according to the invention from the single drive motor 19 made can, even if the distance between the transfer cylinders 13 and 14 is increased so far that the drive gears 21 and 25 of the transfer cylinders 13 and 14 are moved out of driving engagement.
  • the drive gears 21 and 25 and the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 are formed such that in the pressure-on position (see Fig. 1 c) Both the drive gears 21 and 25 and the auxiliary gears 30 and 31 mesh with each other, namely such that in the pressure-on position a backlash of the auxiliary gears 30 and 31 is greater than a backlash of the drive gears 21 and 25, so that in the pressure An-position of the transfer cylinders 13 and 14, the drive gears 21 and 25 thereof and not the auxiliary gears 30 and 31 thereof provide the drive connection between the printing units 11 and 12.
  • Fig. 2c can be removed, the drive gears 21 and 25 and the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 formed such that in the print-off position exclusively the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 mesh with each other, whereas the drive gears 21 and 25 are moved out of engagement by increasing the axial distance between the transfer cylinders 13 and 14, and do not mesh with each other.
  • the drive connection between the printing units 11 and 12 is provided by the auxiliary gears 30 and 31.
  • the drive gears 21 and 25 of the transfer cylinders 13 and 14 have a coverage of at least 1.1. Under the degree of coverage is a measure of the currently engaged meshing number of teeth of the gears to understand.
  • the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 have a coverage of at least 1.1.
  • the drive gears 21 and 25 of the transfer cylinders 13 and 14 have a larger pressure angle than the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14.
  • the pressure angle is to be understood as meaning an angle between a rolling straight line and a common normal of tooth flanks in their point of contact.
  • the pressure angle is also referred to as normal engagement angle, wherein for the drive gears 20, 21, for example, a normal engagement angle of 20 ° and for the auxiliary gears 30 and 31, for example, a normal engagement angle of 15 ° can be selected.
  • the drive gears 21 and 25 have a larger number of teeth as the auxiliary gears 30 and 31. Teeth of the auxiliary gears 30 and 31 are higher and possibly wider than teeth of the drive gears 21 and 25th
  • Teeth of the auxiliary gears 30 and 31, which are wider than the teeth of the drive gears 21 and 25, are used in particular for helical gears with helical teeth.
  • auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 have a larger so-called module than the drive gears 21 and 25 thereof, wherein the module is a ratio of the pitch to the mathematical ⁇ to understand, and wherein the pitch of a gear, the distance from Zahnmitte to mid-tooth on the pitch circle diameter of the gear.
  • the printing unit according to the invention therefore has a main toothing, which is formed by the drive gears 21, 23, 25 and 27 of the cylinders 13, 14, 15 and 16, and in addition via an auxiliary toothing of the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14th is formed.
  • a main toothing which is formed by the drive gears 21, 23, 25 and 27 of the cylinders 13, 14, 15 and 16, and in addition via an auxiliary toothing of the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14th is formed.
  • the drive connection between the printing units 11 and 12 via the main teeth namely the drive gears 21 and 25 of the transfer cylinders 13 and 14
  • the auxiliary toothing In the pressure on position the auxiliary toothing is without function.
  • the pressure-off position in which the axial distance between the transfer cylinders 13 and 14 is increased, however, the drive connection is maintained via the auxiliary teeth.
  • the auxiliary teeth on the auxiliary gears 30 and 31 has a tooth height, which ensures an engagement between the auxiliary gears 30 and 31 even with an increased center distance between the transfer cylinders 13 and 14 and preferably has a coverage of at least 1.1, to a bumpless motion transmission guarantee.
  • the printing unit according to the invention thus comes out both in the print-on position and in the print-off position for driving all the cylinders with a single drive motor.
  • the auxiliary toothing with a high modulus, low number of teeth and high teeth and thus high toothing is not suitable for the transmission of motion, in particular because of a relatively low profile overlap and a low accuracy in the pressure on position.
  • the accuracy of the auxiliary teeth is sufficient to maintain the relative circumferential position of the two transfer cylinders and the drive gears 21 and 25 to run during the movement of the transfer cylinder, ie when transferring to the print-on position, that these in the same circumferential position as get back into meshing before moving apart.
  • the auxiliary teeth in the printing unit according to the invention for the transmission of motion has no relevance.
  • the auxiliary teeth can therefore be manufactured with low demands on accuracy and with little effort.

Description

Die Erfindung betrifft eine Druckeinheit einer Rollendruckmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a printing unit of a web-fed printing press according to the preamble of claim 1.

Aus der Praxis sind Druckeinheiten einer Rollendruckmaschine mit mehreren Druckwerken bekannt. Jedes Druckwerk einer Druckeinheit einer Rollendruckmaschine umfasst einen Übertragungszylinder, ein Formzylinder, ein Farbwerk sowie vorzugsweise ein Feuchtwerk, wobei der Übertragungszylinder auch als Gummizylinder und der Formzylinder auch als Plattenzylinder bezeichnet wird. Bei Druckeinheiten mit mehreren Druckwerken ist es weiterhin bereits bekannt, dass der Übertragungszylinder eines ersten Druckwerks der Druckeinheit und der Übertragungszylinder eines zweiten Druckwerks der Druckeinheit unter Ausbildung eines Druckspalts für einen zu bedruckenden Bedruckstoff aufeinander abrollen, wobei dann das erste Druckwerk und das zweite Druckwerk den zu bedruckenden Bedruckstoff auf unterschiedlichen Seiten bedrucken.From practice, printing units of a web-fed printing press with several printing units are known. Each printing unit of a printing unit of a web press comprises a transfer cylinder, a forme cylinder, an inking unit and preferably a dampening unit, wherein the transfer cylinder is also referred to as a blanket cylinder and the forme cylinder as a plate cylinder. In printing units with multiple printing units, it is also already known that the transfer cylinder of a first printing unit of the printing unit and the transfer cylinder of a second printing unit of the printing unit to form a printing gap for a substrate to be printed roll on each other, in which case the first printing unit and the second printing unit to Print on printing substrate on different sides.

Ferner ist es aus der Praxis bekannt, dass die Zylinder der Druckwerke, deren Übertragungszylinder aufeinander abrollen über Antriebszahnräder in einer Antriebsverbindung stehen, nämlich derart, dass ein auf einer Welle des Übertragungszylinders des ersten Druckwerks positioniertes Antriebszahnrad sowie ein auf einer Welle des Übertragungszylinders des zweiten Druckwerks positioniertes Antriebszahnrad jeweils in ein auf einer Welle des Formzylinders des jeweiligen Druckwerks positioniertes Antriebszahnrad und in das auf der Welle des Übertragungszylinders des jeweils anderen Druckwerks positionierte Antriebszahnrad kämmen. In diesem Fall können dann über einen einzigen Antriebsmotor, der einem Zylinder des ersten Druckwerks oder einem Zylinder des zweiten Druckwerks zugeordnet ist, alle Zylinder des ersten Druckwerks und alle Zylinder des zweiten Druckwerks angetrieben werden.Furthermore, it is known in practice that the cylinders of the printing couples whose transfer cylinders roll on each other via drive gears in a drive connection, namely such that a positioned on a shaft of the transfer cylinder of the first printing drive gear and on a shaft of the transfer cylinder of the second printing unit positioned drive gear mesh respectively in a positioned on a shaft of the forme cylinder of the respective printing unit drive gear and in the positioned on the shaft of the transfer cylinder of the respective other printing unit drive gear. In this case, then via a single drive motor, the one cylinder of the first printing unit or a cylinder of the second printing unit is assigned, all cylinders of the first printing unit and all cylinders of the second printing unit to be driven.

Dann, wenn an einer Druckeinheit einer Rollendruckmaschine mit mehreren Druckwerken während des Druckbetriebs an anderen Druckeinheiten dieser Rollendruckmaschine an den Formzylinder der Druckeinheit ein Druckformwechsel durchgeführt werden soll, müssen die Übertragungszylinder von einer sogenannten Druck-An-Stellung, in welcher dieselben den Druckspalt für den zu bedruckenden Bedruckstoff definieren, in eine sogenannte Druck-Ab-Stellung überführt werden, wobei in der Druck-Ab-Stellung der Achsabstand zwischen den Übertragungszylindern in solchem Maße vergrößert ist, sodass ein Bedruckstoff berührungslos durch die jeweilige Druckeinheit geführt werden kann. Durch die Überführung der Übertragungszylinder von der Druck-An-Stellung in die Druck-Ab-Stellung wird, wie bereits erwähnt, der Achsabstand zwischen den Übertragungszylindern vergrößert, wodurch dann die Antriebszahnräder der Übertragungszylinder außer Eingriff gelangen, sodass dann die Antriebsverbindung zwischen den Übertragungszylindern und damit den Druckwerken aufgehoben wird. Wenn jedoch zur Durchführung eines Druckformwechsels sämtliche Zylinder der Druckwerke antreibbar sein müssen, wird nach der Praxis bei einer Druckeinheit, deren Übertragungszylinder unter Vergrößerung des Achsabstands zwischen denselben von einer Druck-An-Stellung in eine Druck-Ab-Stellung überführbar sind, für jedes Druckwerk ein separater Antriebsmotor bereit gehalten, wobei dann nur noch die Zylinder des entsprechenden Druckwerks über Antriebszahnräder in Antriebsverbindung stehen, die Antriebsverbindung zwischen den Übertragungszylindern jedoch permanent aufgehoben ist. Hierdurch wird dann nicht nur der vorrüstungstechnische Aufwand einer Druckeinheit durch den Einsatz eines weiteren Antriebsmotors erhöht, vielmehr kann die fehlende mechanische Kopplung zwischen den Übertragungszylindern der Druckwerke zu drucktechnischen Problemen führen, da zum Beispiel Drehmomentstöße oder Drehmomentschwankungen aus den Farbwerken zu Beeinträchtigungen des Gleichlaufs der den Druckspalt definierenden Übertragungszylindern führen können, der von den Antriebsmotoren der Druckwerke nicht ausreichend ausgeregelt werden kann.Then, when a pressure unit change is to be performed on a printing unit of a web press with multiple printing units during printing on other printing units of this web press on the forme cylinder of the printing unit, the transfer cylinder from a so-called print-on position, in which the same pressure gap for Define printing substrate to be converted into a so-called print-off position, wherein in the print-off position, the axial distance between the transfer cylinders is increased to such an extent, so that a substrate can be guided without contact by the respective printing unit. By transferring the transfer cylinder from the print-on position to the print-off position, as already mentioned, the axial distance between the transfer cylinders is increased, whereby then the drive gears of the transfer cylinder out of engagement, so then the drive connection between the transfer cylinders and so that the printing units is canceled. However, if all cylinders of the printing units must be drivable to perform a printing plate change, is in practice at a printing unit, the transfer cylinder by increasing the axial distance between the same from a print-on position to a print-off position can be transferred for each printing unit a separate drive motor kept ready, in which case only the cylinders of the corresponding printing unit via drive gears are in drive connection, the drive connection between the transfer cylinders is permanently canceled. As a result, not only the vorrüststechnische effort of a printing unit is increased by the use of another drive motor, but the lack of mechanical coupling between the transfer cylinders of the printing units can lead to printing problems, such as torque surges or torque fluctuations from the inking units to impair the synchronization of the pressure gap can lead to defining transfer cylinders, which can not be adequately compensated by the drive motors of the printing units.

Es besteht daher Bedarf an einer Druckeinheit einer Rollendruckmaschine mit mehreren Druckwerken, bei welcher die Zylinder von Druckwerken, deren Übertragungszylinder aufeinander abrollen und einen Druckspalt bilden, von einem einzigen Antriebsmotor aus angetrieben werden können, bei welchem jedoch zur Durchführung eines Druckformwechsels nach Vergrößerung des Achsabstands zwischen den Übertragungszylindern weiterhin ein Antrieb sämtlicher Zylinder der Druckwerke möglich ist.There is therefore a need for a printing unit of a web press with multiple printing units, in which the cylinders of printing couples whose transfer cylinders roll on each other and form a printing nip, can be driven by a single drive motor, but in which to perform a printing plate change after increasing the axial distance between the transfer cylinders continue to drive all cylinders of the printing units is possible.

Eine Druckeinheit mit den Merkmalen des Oberbegriffs des Patentanspruchs 1 ist aus US 2006/225590 A1 bekannt.A printing unit with the features of the preamble of claim 1 is made US 2006/225590 A1 known.

Weiterer Stand der Technik ist in DE 197 46 108 A1 offenbart.Further prior art is in DE 197 46 108 A1 disclosed.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine neuartige Druckeinheit zu schaffen. Diese Aufgabe wird durch eine Druckeinheit gemäß Patentanspruch 1 gelöst.On this basis, the present invention has the object to provide a novel printing unit. This object is achieved by a printing unit according to claim 1.

Die erfindungsgemäße Druckeinheit erlaubt den Antrieb der Zylinder solcher Druckwerke, deren Übertragungszylinder in der Druck-An-Stellung unter Ausbildung des Druckspalts für den zu bedruckenden Bedruckstoff aufeinander abrollen, einerseits in der Druck-An-Stellung und andererseits in der Druck-Ab-Stellung über einen einzigen Antriebsmotor. In der Druck-An-Stellung wird hierzu die Antriebsverbindung zwischen den Druckwerken, nämlich zwischen den Übertragungszylindern derselben, von Antriebszahnrädern bereitgestellt.The printing unit according to the invention allows the drive of the cylinders of such printing units, the transfer cylinder in the print-on position to form the printing gap for the printing material to roll on each other, on the one hand in the print-on position and on the other hand in the print-off position on a single drive motor. In the print-on position for this purpose, the drive connection between the printing units, namely between the transfer cylinders of the same, provided by drive gears.

In der Druck-Ab-Stellung, in welcher im Vergleich zur Druck-An-Stellung der Achsabstand zwischen Übertragungszylindern vergrößert ist, wird die Antriebsverbindung zwischen den Druckwerken, nämlich zwischen den Übertragungszylindern derselben, von den Hilfszahnrädern bereitgestellt, die zusammen mit den Antriebszahnrädern der Übertragungszylinder auf den Wellen der Übertragungszylinder positioniert sind.In the print-off position, in which the center distance between transfer cylinders is increased compared to the print on position, the drive connection between the printing units, namely between the transfer cylinders thereof, is provided by the auxiliary gears, which together with the drive gears of the transfer cylinders are positioned on the shafts of the transfer cylinder.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ein Ausführungsbeispiel der Erfindung wird, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:

Fig. 1a bis 1c:
schematisierte Ansichten einer erfindungsgemäßen Druckeinheit in der Druck-An-Stellung; und
Fig. 2a bis 2c
schematisierte Ansichten der erfindungsgemäßen Druckeinheit in der Druck-Ab-Stellung.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. An embodiment of the invention will be described, without being limited thereto, with reference to the drawing. Showing:
1a to 1c:
schematic views of a printing unit according to the invention in the print-on position; and
Fig. 2a to 2c
schematic views of the printing unit according to the invention in the print-off position.

Die hier vorliegende Erfindung betrifft eine Druckeinheit einer Rollendruckmaschine mit mehreren Druckwerken. Nachfolgend wird die Erfindung unter Bezugnahme auf Fig. 1a bis 2c am Beispiel einer Druckeinheit 10 beschrieben, die zwei Druckwerke 11 und 12 umfasst, die als sogenannte Vier-Zylinder-Druckeinheit ausgeführt ist.The present invention relates to a printing unit of a web-fed printing press with a plurality of printing units. Hereinafter, the invention with reference to Fig. 1a to 2c described using the example of a printing unit 10, which comprises two printing units 11 and 12, which is designed as a so-called four-cylinder printing unit.

Wie bereits ausgeführt, umfasst die Druckeinheit 10 der Fig. 1a bis 2c zwei Druckwerke 11 und 12, wobei jedes der Druckwerke 11 und 12 einen Übertragungszylinder 13 bzw. 14 sowie einen auf dem jeweiligen Übertragungszylinder 13 bzw. 14 abrollenden Formzylinder 15 bzw. 16 aufweist. Zusätzlich verfügen die Druckwerke 11 und 12 der in Fig. 1a bis 2c gezeigten Druckeinheit über nicht gezeigte Farbwerke sowie vorzugsweise nicht gezeigte Feuchtwerke.As already stated, the printing unit 10 comprises the Fig. 1a to 2c two printing units 11 and 12, wherein each of the printing units 11 and 12 has a transfer cylinder 13 and 14 and a rolling on the respective transfer cylinder 13 and 14 form cylinder 15 and 16 respectively. In addition, the printing units 11 and 12 have the in Fig. 1a to 2c shown printing unit via inking units, not shown, and preferably not shown dampening units.

Bei der in Fig. 1a bis 2c gezeigten Vier-Zylinder-Druckeinheit 10 rollen die Übertragungszylinder 13 und 14 der beiden Druckwerke 11 und 12 in einer sogenannten Druck-An-Stellung, die in Fig. 1a bis 1c gezeigt ist, unter Ausbildung eines Druckspalts 17 für einen zu bedruckenden Bedruckstoff 18 ab. Der Bedruckstoff 18 wird demnach von den beiden Druckwerken 11 und 12 der gezeigten Vier-Zylinder-Druckeinheit 10 beidseitig bedruckt.At the in Fig. 1a to 2c shown four-cylinder printing unit 10 roll the transfer cylinders 13 and 14 of the two printing units 11 and 12 in a so-called print-on position, the Fig. 1a to 1c is shown, forming a printing gap 17 for a printing substrate 18 from. The printing material 18 is therefore printed on both sides of the two printing units 11 and 12 of the four-cylinder printing unit 10 shown.

Bei der gezeigten Vier-Zylinder-Druckeinheit 10 stehen die Zylinder 13, 14, 15 und 16 beider Druckwerke 11 und 12 in einer Antriebsverbindung, sodass dieselben von einem gemeinsamen Antriebsmotor 19 aus antreibbar sind. Fig. 1a kann entnommen werden, dass in einer Druck-An-Stellung der Druckwerke 11, 12, in welcher die Übertragungszylinder 13 und 14 derselben den Druckspalt 17 für den zu bedruckenden Bedruckstoff 18 definieren, die Antriebszahnräder der Zylinder 13 bis 16 derart in Eingriff stehen, dass ein auf einer Welle 20 des Übertragungszylinders 13 des Druckwerks 11 positioniertes Antriebszahnrad 21 einerseits in eine auf einer Welle 22 des Formzylinders 15 desselben Druckwerks 11 positioniertes Antriebszahnrad 23 und andererseits in ein auf einer Welle 24 des Übertragungszylinders 14 des anderen Druckwerks 12 positioniertes Antriebszahnrad 25 kämmt. Dieses auf der Welle 24 des Übertragungszylinders 14 positionierte Antriebszahnrad 25 kämmt weiterhin in ein auf einer Welle 26 des vom Zylinder 16 des Druckwerks 12 positioniertes Antriebszahnrad 27, wobei gemäß Fig. 1a in dieses Antriebszahnrad 27 des Formzylinders 16 des Druckwerks 12 ein Zahnrad 28 kämmt, welches auf einer vom Antriebsmotor 19 angetriebenen Welle 29 positioniert ist.In the four-cylinder printing unit 10 shown, the cylinders 13, 14, 15 and 16 of both printing units 11 and 12 are in drive connection, so that they can be driven by a common drive motor 19. Fig. 1a can be seen that in a print-on position of the printing units 11, 12, in which the transfer cylinders 13 and 14 of the same define the printing gap 17 for the substrate to be printed 18, the drive gears of the cylinders 13 to 16 are engaged such a drive gear 21 positioned on a shaft 20 of the transfer cylinder 13 of the printing unit 11 meshes on the one hand with a drive gear 23 positioned on a shaft 22 of the forme cylinder 15 of the same printing unit 11 and on the other with a drive gear 25 positioned on a shaft 24 of the transfer cylinder 14 of the other printing unit 12. This positioned on the shaft 24 of the transfer cylinder 14 drive gear 25 further meshes with a on a shaft 26 of the cylinder 16 of the printing unit 12 positioned drive gear 27, wherein Fig. 1a in this drive gear 27 of the forme cylinder 16 of the printing unit 12, a gear 28 meshes, which is positioned on a drive shaft 19 driven by the drive motor 29.

In der Druck-An-Stellung der Übertragungszylinder 13 und 14 der Druckwerke 11 und 12 der gezeigten Vier-Zylinder-Druckeinheit 10 kämmen demnach die Antriebszahnräder 21 und 25 der Übertragungszylinder 13 und 14 ineinander und stellen so eine Antriebsverbindung zwischen den beiden Druckwerken 11 und 12 her, sodass sämtliche Zylinder 13, 14, 15 und 16 der Druckeinheit 10 vom einzigen Antriebsmotor 19 aus angetrieben werden können.In the print-on position of the transfer cylinders 13 and 14 of the printing units 11 and 12 of the four-cylinder printing unit 10 shown therefore mesh the drive gears 21 and 25 of the transfer cylinders 13 and 14 into each other and thus provide a drive connection between the two printing units 11 and 12th forth, so that all the cylinders 13, 14, 15 and 16 of the printing unit 10 can be driven by the single drive motor 19 from.

Die Druckwerke 11 und 12, nämlich die Übertragungszylinder 13 und 14 derselben, die in der Druck-An-Stellung den Druckspalt 17 für den zu bedruckenden Bedruckstoff 18 definieren, sind von der Druck-An-Stellung in eine Druck-Ab-Stellung, die in Fig. 2a bis 2c gezeigt ist, überführbar, nämlich unter Vergrößerung des Achsabstands zwischen den Übertragungszylindern 13 und 14 und damit unter Vergrößerung des Spalts 17 zwischen denselben, sodass dann der Bedruckstoff 18 berührungslos durch die Druckeinheit 10 transportiert bzw. gefördert werden kann. In diesem Fall können dann an den Formzylindern 15 und 16 Druckformwechsel ausgeführt werden, wozu es erforderlich ist, die Zylinder 13, 14, 15 und 16 der Druckwerke 11 und 12 anzutreiben, wobei dieses Antreiben bei der erfindungsgemäßen Druckeinheit 10 vom einzigen Antriebsmotor 19 aus erfolgen kann, und zwar auch dann, wenn der Abstand zwischen den Übertragungszylindern 13 und 14 so weite vergrößert ist, dass die Antriebszahnräder 21 und 25 der Übertragungszylinder 13 und 14 außer Antriebseingriff bewegt sind.The printing units 11 and 12, namely the transfer cylinders 13 and 14 thereof, which define the printing gap 17 for the printing substrate 18 to be printed in the print-on position, are from the print-on position to a print-off position, the in Fig. 2a to 2c is shown, convertible, namely by increasing the axial distance between the transfer cylinders 13 and 14 and thus enlarging the gap 17 between them, so that then the substrate 18 can be transported without contact by the printing unit 10 or promoted. In this case, 15 and 16 printing plate changes can then be performed on the forme cylinders, for which it is necessary to drive the cylinders 13, 14, 15 and 16 of the printing units 11 and 12, wherein this driving in the printing unit 10 according to the invention from the single drive motor 19 made can, even if the distance between the transfer cylinders 13 and 14 is increased so far that the drive gears 21 and 25 of the transfer cylinders 13 and 14 are moved out of driving engagement.

Um auch dann eine Antriebsverbindung zwischen den Druckwerken 11 und 12 zu gewährleisten, wenn die Übertragungszylinder 13 und 14 derselben durch Vergrößerung des Achsabstands in die Druck-Ab-Stellung überführt sind, sind auf den Wellen 20 und 24 der Übertragungszylinder 13 und 14 zusätzlich zu den Antriebszahnrädern 21 und 25 Hilfszahnräder 30 und 31 angeordnet. So sind auf der Welle 20 des Übertragungszylinders 13 des Druckwerks 11 das Antriebszahnrad 21 und das Hilfszahnrad 30 positioniert. Auf der Welle 24 des Übertragungszylinders 14 des Druckwerks 12 sind das Antriebszahnrad 25 und das Hilfszahnrad 31 angeordnet.In order to ensure a drive connection between the printing units 11 and 12, even if the transfer cylinders 13 and 14 thereof are transferred by increasing the center distance in the print-off position, are on the shafts 20 and 24 of the transfer cylinder 13 and 14 in addition to the Drive gears 21 and 25 auxiliary gears 30 and 31 are arranged. Thus, on the shaft 20 of the transfer cylinder 13 of the printing unit 11, the drive gear 21 and the auxiliary gear 30 are positioned. On the shaft 24 of the transfer cylinder 14 of the printing unit 12, the drive gear 25 and the auxiliary gear 31 are arranged.

Dann, wenn, wie Fig. 1a bis 1c zeigen, die Übertragungszylinder 13 und 14 die Druck-An-Stellung einnehmen, wird die Antriebsverbindung zwischen den Druckwerken 11 und 12, nämlich zwischen Übertragungszylindern 13 und 14 derselben, über die Antriebszahnräder 21 und 25 und nicht über die Hilfszahnräder 30 und 31 bereitgestellt.Then, if, how Fig. 1a to 1c 4, the transfer cylinders 13 and 14 assume the print-on position, the drive connection between the printing units 11 and 12, namely between transfer cylinders 13 and 14 thereof, is provided via the drive gears 21 and 25 and not via the auxiliary gears 30 and 31.

Dann hingegen, wenn die Übertragungszylinder 13 und 14 der Druckwerke 11 und 12 in die in Fig. 2a bis 2c gezeigte Druck-Ab-Stellung überführt sind, stellen nicht die Antriebszahnräder 21 und 25 der Übertragungszylinder 13 und 14 die Antriebsverbindung zwischen den Druckwerken 11 und 12 her, vielmehr wird in diesem Fall die Antriebsverbindung zwischen den Druckwerken 11 und 12 durch die Hilfszahnräder 30 und 31 bereitgestellt.Then, however, when the transfer cylinders 13 and 14 of the printing units 11 and 12 in the in Fig. 2a to 2c Not shown the drive gears 21 and 25 of the transfer cylinders 13 and 14, the drive connection between the printing units 11 and 12 forth, but in this case the drive connection between the printing units 11 and 12 by the auxiliary gears 30 and 31 provided.

Wie Fig. 1 c und 2c entnommen werden kann, sind die Antriebszahnräder 21 und 25 und die Hilfszahnräder 30 und 31 der Übertragungszylinder 13 und 14 derart ausgebildet, dass in der Druck-An-Stellung (siehe Fig. 1 c) sowohl die Antriebszahnräder 21 und 25 als auch die Hilfszahnräder 30 und 31 ineinander kämmen, nämlich derart, dass in der Druck-An-Stellung ein Zahnspiel der Hilfszahnräder 30 und 31 größer als ein Zahnspiel der Antriebszahnräder 21 und 25 ist, sodass in der Druck-An-Stellung der Übertragungszylinder 13 und 14 die Antriebszahnräder 21 und 25 derselben und nicht die Hilfszahnräder 30 und 31 derselben die Antriebsverbindung zwischen den Druckwerken 11 und 12 bereitstellen.As Fig. 1 c and 2c can be taken, the drive gears 21 and 25 and the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 are formed such that in the pressure-on position (see Fig. 1 c) Both the drive gears 21 and 25 and the auxiliary gears 30 and 31 mesh with each other, namely such that in the pressure-on position a backlash of the auxiliary gears 30 and 31 is greater than a backlash of the drive gears 21 and 25, so that in the pressure An-position of the transfer cylinders 13 and 14, the drive gears 21 and 25 thereof and not the auxiliary gears 30 and 31 thereof provide the drive connection between the printing units 11 and 12.

Ferner sind, wie Fig. 2c entnommen werden kann, die Antriebszahnräder 21 und 25 sowie die Hilfszahnräder 30 und 31 der Übertragungszylinder 13 und 14 derart ausgebildet, dass in der Druck-Ab-Stellung ausschließlich die Hilfszahnräder 30 und 31 der Übertragungszylinder 13 und 14 ineinander kämmen, wohingegen die Antriebszahnräder 21 und 25 durch Vergrößerung des Achsabstands zwischen den Übertragungszylindern 13 und 14 außer Eingriff bewegt sind, und nicht ineinander kämmen. In der Druck-Ab-Stellung wird die Antriebsverbindung zwischen den Druckwerken 11 und 12 durch die Hilfszahnräder 30 und 31 bereitgestellt.Furthermore, how are Fig. 2c can be removed, the drive gears 21 and 25 and the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 formed such that in the print-off position exclusively the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 mesh with each other, whereas the drive gears 21 and 25 are moved out of engagement by increasing the axial distance between the transfer cylinders 13 and 14, and do not mesh with each other. In the print-off position, the drive connection between the printing units 11 and 12 is provided by the auxiliary gears 30 and 31.

Bei der Überführung der Übertragungszylinder 13 und 14 von der in Fig. 1a bis 1 c gezeigten Druck-An-Stellung in die in Fig. 2a bis 2c gezeigte Druck-Ab-Stellung übernehmen die Hilfszahnräder 30 und 31 die Antriebsverbindung zwischen den Druckwerken bevor die Antriebszahnräder 21 und 25 außer Eingriff gehen.In the transfer of the transfer cylinders 13 and 14 of the in Fig. 1a to 1 c shown pressure-on position in the in Fig. 2a to 2c shown pressure-off position take over the auxiliary gears 30 and 31, the drive connection between the printing units before the drive gears 21 and 25 are disengaged.

In dieser Übergabeposition bzw. Übernahmeposition der Antriebsverbindung, in welcher die Hilfszahnräder 30 und 31 die Antriebsverbindung übernehmen, weisen die Antriebszahnräder 21 und 25 der Übertragungszylinder 13 und 14 einen Überdeckungsgrad von mindestens 1,1 auf. Unter dem Überdeckungsgrad ist ein Maß für die sich augenblicklich im Eingriff befindliche Zähnezahl der Zahnräder zu verstehen.In this transfer position or takeover position of the drive connection, in which the auxiliary gears 30 and 31 take over the drive connection, the drive gears 21 and 25 of the transfer cylinders 13 and 14 have a coverage of at least 1.1. Under the degree of coverage is a measure of the currently engaged meshing number of teeth of the gears to understand.

In der Druck-Ab-Stellung weisen die Hilfszahnräder 30 und 31 der Übertragungszylinder 13 und 14 einen Überdeckungsgrad von mindestens 1,1 auf.In the pressure-off position, the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 have a coverage of at least 1.1.

Die Antriebszahnräder 21 und 25 der Übertragungszylinder 13 und 14 weisen einen größeren Eingriffswinkel als die Hilfszahnräder 30 und 31 der Übertragungszylinder 13 und 14 auf. Unter dem Eingriffswinkel ist ein Winkel zwischen einer Wälzgeraden und einer gemeinsamen Normalen von Zahnflanken in deren Berührungspunkt zu verstehen. Der Eingriffswinkel wird auch als Normaleingriffswinkel bezeichnet, wobei für die Antriebszahnräder 20, 21 zum Beispiel ein Normaleingriffswinkel von 20° und für die Hilfszahnräder 30 und 31 zum Beispiel ein Normaleingriffswinkel von 15° gewählt werden kann. Bei der Achsabstandsvergrößerung der Übertragungszylinder 13 und 14 bei der Übertragung derselben von der Druck-An-Stellung in die Druck-Ab-Stellung ist dann eine Spielvergrößerung der Antriebszahnräder 21 und 25 größer als eine Spielvergrößerung der Hilfszahnräder 30 und 31, sodass ab einer bestimmten Abstandsvergrößerung das Spiel der Antriebszahnräder 21 und 25 größer ist als das Spiel der Hilfszahnräder 30 und 31, wobei dann die Hilfszahnräder 30 und 31 die Antriebsverbindung zwischen den Druckwerken übernehmen.The drive gears 21 and 25 of the transfer cylinders 13 and 14 have a larger pressure angle than the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14. The pressure angle is to be understood as meaning an angle between a rolling straight line and a common normal of tooth flanks in their point of contact. The pressure angle is also referred to as normal engagement angle, wherein for the drive gears 20, 21, for example, a normal engagement angle of 20 ° and for the auxiliary gears 30 and 31, for example, a normal engagement angle of 15 ° can be selected. In the Achsabstandsvergrößerung the transfer cylinders 13 and 14 in the transmission of the same from the print-on position to the print-off position then a game enlargement of the drive gears 21 and 25 is greater than a game increase in the auxiliary gears 30 and 31, so from a certain distance increase the play of the drive gears 21 and 25 is greater than the play of the auxiliary gears 30 and 31, in which case the auxiliary gears 30 and 31 take over the drive connection between the printing units.

Wie Fig. 1 c und 2c entnommen werden können, verfügen die Antriebszahnräder 21 und 25 über eine größere Anzahl von Zähnen wie die Hilfszahnräder 30 und 31. Zähne der Hilfszahnräder 30 und 31 sind dabei höher und gegebenenfalls breiter als Zähne der Antriebszahnräder 21 und 25.As Fig. 1 c and 2c can be removed, the drive gears 21 and 25 have a larger number of teeth as the auxiliary gears 30 and 31. Teeth of the auxiliary gears 30 and 31 are higher and possibly wider than teeth of the drive gears 21 and 25th

Zähne der Hilfszahnräder 30 und 31, die breiter als Zähne der Antriebszahnräder 21 und 25 sind, kommen insbesondere bei schräg verzahnten Hilfszahnrädern zum Einsatz.Teeth of the auxiliary gears 30 and 31, which are wider than the teeth of the drive gears 21 and 25, are used in particular for helical gears with helical teeth.

Ferner verfügen die Hilfszahnräder 30 und 31 der Übertragungszylinder 13 und 14 über einen größeren sogenannten Modul als die Antriebszahnräder 21 und 25 derselben, wobei unter dem Modul ein Verhältnis der Teilung zur mathematischen π zu verstehen ist, und wobei die Teilung eines Zahnrads der Abstand von Zahnmitte zu Zahnmitte auf dem Teilkreisdurchmesser des Zahnrads ist.Further, the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14 have a larger so-called module than the drive gears 21 and 25 thereof, wherein the module is a ratio of the pitch to the mathematical π to understand, and wherein the pitch of a gear, the distance from Zahnmitte to mid-tooth on the pitch circle diameter of the gear.

Die erfindungsgemäße Druckeinheit verfügt demnach über eine Hauptverzahnung, die von den Antriebszahnrädern 21, 23, 25 und 27 der Zylinder 13, 14, 15 und 16 gebildet wird, sowie zusätzlich über eine Hilfsverzahnung, die von den Hilfszahnrädern 30 und 31 der Übertragungszylinder 13 und 14 gebildet wird. In der Druck-An-Stellung wird die Antriebsverbindung zwischen den Druckwerken 11 und 12 über die Hauptverzahnung, nämlich die Antriebszahnräder 21 und 25 der Übertragungszylinder 13 und 14, bereitgestellt. In der Druck-An-Stellung ist die Hilfsverzahnung ohne Funktion. In der Druck-Ab-Stellung, in welcher der Achsabstand zwischen den Übertragungszylindern 13 und 14 vergrößert ist, wird hingegen die Antriebsverbindung über die Hilfsverzahnung aufrechterhalten. Die Hilfsverzahnung über die Hilfszahnräder 30 und 31 verfügt über eine Zahnhöhe, die auch bei einem vergrößerten Achsabstand zwischen den Übertragungszylindern 13 und 14 einen Eingriff zwischen den Hilfszahnrädern 30 und 31 gewährleistet und vorzugsweise ein Überdeckungsgrad von mindestens 1,1 aufweist, um eine stoßfreie Bewegungsübertragung zu gewährleisten.The printing unit according to the invention therefore has a main toothing, which is formed by the drive gears 21, 23, 25 and 27 of the cylinders 13, 14, 15 and 16, and in addition via an auxiliary toothing of the auxiliary gears 30 and 31 of the transfer cylinders 13 and 14th is formed. In the print-on position, the drive connection between the printing units 11 and 12 via the main teeth, namely the drive gears 21 and 25 of the transfer cylinders 13 and 14, is provided. In the pressure on position the auxiliary toothing is without function. In the pressure-off position, in which the axial distance between the transfer cylinders 13 and 14 is increased, however, the drive connection is maintained via the auxiliary teeth. The auxiliary teeth on the auxiliary gears 30 and 31 has a tooth height, which ensures an engagement between the auxiliary gears 30 and 31 even with an increased center distance between the transfer cylinders 13 and 14 and preferably has a coverage of at least 1.1, to a bumpless motion transmission guarantee.

In der Druck-An-Stellung ist die Hilfsverzahnung der Hilfszahnrädern 30, 31 ohne Funktion, da dieselbe ein größeres Zahnspiel aufweist als die über die Antriebszahnräder 21, 25 bereitgestellte Hauptverzahnung.In the pressure-on position, the auxiliary teeth of the auxiliary gears 30, 31 without function, since the same has a greater backlash than the provided via the drive gears 21, 25 main teeth.

Erst nach dem Auseinanderfahren bzw. beim Auseinanderfahren der Übertragungszylinder 13 und 14 von der Druck-An-Stellung in die Druck-Ab-Stellung übernimmt die Hilfsverzahnung ab einem gewissen Übergabeabstand die Antriebsverbindung, und zwar bevor die Antriebszahnräder 21 und 25 der Übertragungszylinder 13 und 14 außer Eingriff gehen, wobei in diesem Übergabepunkt der Überdeckungsgrad der Antriebszahnräder der Übertragungszylinder 13 und 14 mindestens 1,1 beträgt.Only after moving apart or when moving apart of the transfer cylinder 13 and 14 of the pressure-on position in the pressure-off position accepts the auxiliary teeth from a certain transfer distance the drive connection, and that before the drive gears 21 and 25 of the transfer cylinder 13 and 14th disengage, wherein in this transfer point, the degree of overlap of the drive gears of the transfer cylinders 13 and 14 is at least 1.1.

Die erfindungsgemäße Druckeinheit kommt demnach sowohl in der Druck-An-Stellung als auch in der Druck-Ab-Stellung zum Antrieb sämtlicher Zylinder mit einem einzigen Antriebsmotor aus.The printing unit according to the invention thus comes out both in the print-on position and in the print-off position for driving all the cylinders with a single drive motor.

Die Hilfsverzahnung mit hohem Modul, geringer Zähnezahl und hohen Zähnen und damit Hochverzahnung ist insbesondere wegen einer relativ geringen Profilüberdeckung und einer geringen Genauigkeit in der Druck-An-Stellung nicht für die Bewegungsübertragung geeignet. In der Druck-Ab-Stellung hingegen ist die Genauigkeit der Hilfsverzahnung ausreichend, um die relative Umfangslage der beiden Übertragungszylinder beizubehalten und beim Zusammenfahren der Übertragungszylinder, d.h. beim Überführen in die Druck-An-Stellung, die Antriebszahnräder 21 und 25 so zu führen, dass diese in der selben Umfangslage, wie vor dem Auseinanderfahren wieder in Zahneingriff gelangen. In der Druck-An-Stellung hat die Hilfsverzahnung bei der erfindungsgemäßen Druckeinheit für die Bewegungsübertragung keine Relevanz. Die Hilfsverzahnung kann daher mit geringen Anforderungen an die Genauigkeit und mit geringem Aufwand gefertigt werden.The auxiliary toothing with a high modulus, low number of teeth and high teeth and thus high toothing is not suitable for the transmission of motion, in particular because of a relatively low profile overlap and a low accuracy in the pressure on position. In the pressure-off position, however, the accuracy of the auxiliary teeth is sufficient to maintain the relative circumferential position of the two transfer cylinders and the drive gears 21 and 25 to run during the movement of the transfer cylinder, ie when transferring to the print-on position, that these in the same circumferential position as get back into meshing before moving apart. In the print-on position, the auxiliary teeth in the printing unit according to the invention for the transmission of motion has no relevance. The auxiliary teeth can therefore be manufactured with low demands on accuracy and with little effort.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Druckeinheitprinting unit
1111
Druckwerkprinting unit
1212
Druckwerkprinting unit
1313
Übertragungszylindertransfer cylinder
1414
Übertragungszylindertransfer cylinder
1515
Formzylinderform cylinder
1616
Formzylinderform cylinder
1717
Druckspaltnip
1818
Bedruckstoffsubstrate
1919
Antriebsmotordrive motor
2020
Wellewave
2121
Antriebszahnraddrive gear
2222
Wellewave
2323
Antriebszahnraddrive gear
2424
Wellewave
2525
Antriebszahnraddrive gear
2626
Wellewave
2727
Antriebszahnraddrive gear
2828
Zahnradgear
2929
Wellewave
3030
Hilfszahnradauxiliary gear
3131
Hilfszahnradauxiliary gear

Claims (10)

  1. A printing unit (10) of a reel-fed printing press, having at least two printing couples (11, 12), wherein each printing couple (11, 12) comprises a transfer cylinder (13, 14), a form cylinder (15, 16), an inking unit and preferentially a dampening unit, wherein the transfer cylinder (13) of a first printing couple (11) and the transfer cylinder (14) of a second printing couple (12) roll on one another subject to forming a nip (17) for a substrate (18) to be printed, wherein the transfer cylinder (13) and the form cylinder (15) of the first printing couple (11) and the transfer cylinder (14) and the form cylinder (16) of the second printing couple (12) are drive connected via drive gear wheels (21, 23, 25, 27) in such a manner that a drive gear wheel (21) positioned on a shaft (20) of the transfer cylinder (13) of the first printing couple (11) and a drive gear wheel (25) positioned on a shaft (24) of the transfer cylinder (14) of the second printing couple (12) in each case mesh with a drive gear wheel (23, 27) positioned on a shaft (22, 26) of the form cylinder (15, 16) of the respective printing couple (11, 12) and with the drive gear wheel (21, 25) positioned on the shaft (20, 24) of the transfer cylinder (13, 14) of the respective other printing couple, and wherein the transfer cylinders (13, 14) of the first printing couple (11) and second printing couple (12) can be transferred from a print-on position, in which the same define the nip (17), into a print-off position, characterized in that
    the form cylinder (15, 16) of the first printing couple (11) or the second printing couple (12) is assigned a drive motor (19) in such a manner that in the drive gear wheel (23, 27), which is positioned on the shaft of the respective form cylinder (15, 16) a gear wheel (28) meshes which is positioned on a shaft (29) driven by the drive motor (19), and wherein the cylinders (13, 14, 15, 17) of the first printing couple (11) and of the second printing couple (12) can be driven from the drive motor;
    on the shaft of the transfer cylinder (13) of the first printing couple (11) and on the shaft of the transfer cylinder (14) of the second printing couple (12) in addition to the respective drive gear wheel (21, 25) an auxiliary gear wheel (30, 31) each is positioned, wherein in the print-on position of the transfer cylinders (13, 14) the drive gear wheels (21, 25) of the same and not the auxiliary gear wheels (30, 31) of the same provide the drive connection between the printing couples (11, 12), whereas in the print-off position the transfer cylinders (13, 14) of the auxiliary gear wheels (30, 31) of the same and not the drive gear wheels (21, 25) of the same provide the drive connection between the printing couples (11, 12).
  2. The printing unit according to Claim 1, characterized in that the drive gear wheels (21, 25) and the auxiliary gear wheels (30, 31) of the transfer cylinders (13, 14) are designed in such a manner that in the print-on position both the drive gear wheels (21, 25) of the transfer cylinders and also the auxiliary gear wheels (30, 31) of the transfer cylinders mesh with one another in such a manner and that a tooth backlash of the auxiliary gear wheels (30, 31) is greater than a tooth backlash of the drive gear wheels (21, 25), so that in the print-on position of the transfer cylinders the drive gear wheels of the same and not the auxiliary gear wheels of the same provide the drive connection between the printing couples (11, 12).
  3. The printing unit according to Claim 1 or 2, characterized in that the drive gear wheels (21, 25) and the auxiliary gear wheels (30, 31) of the transfer cylinders (13, 14) are designed in such a manner that in the print-off position the auxiliary gear wheels (30, 31) of the transfer cylinders mesh with one another, whereas the drive gear wheels (21, 25) of the transfer cylinders do not mesh with one another.
  4. The printing unit according to any one of the Claims 1 to 3, characterized in that in the print-off position the auxiliary gear wheels (30, 31) of the transfer cylinders (13, 14) have a degree of overlap of at least 1.1.
  5. The printing unit according to any one of the Claims 1 to 4, characterized in that the drive gear wheels (21, 25) and the auxiliary gear wheels (30, 31) of the transfer cylinders are designed in such a manner that during the transfer of the transfer cylinders (13, 14) from the print-on position into the print-off position the auxiliary gear wheels (30, 31) take over the drive connection between the printing couples before the drive gear wheels (21, 25) go out of engagement.
  6. The printing unit according to Claim 5, characterized in that in the takeover position of the drive connection, in which the auxiliary gear wheels (30, 31) take over the drive connection, the drive gear wheels (21, 25) of the transfer cylinders (13, 14) have a degree of overlap of at least 1.1.
  7. The printing unit according to any one of the Claims 1 to 6, characterized in that the drive gear wheels (21, 25) of the transfer cylinders (13, 14) have a greater engagement angle than the auxiliary gear wheels (30, 31) of the transfer cylinders (13, 14).
  8. The printing unit according to any one of the Claims 1 to 7, characterized in that teeth of the auxiliary gear wheels (30, 31) of the transfer cylinders are higher than teeth of the drive gear wheels (21, 25) of the transfer cylinders.
  9. The printing unit according to any one of the Claims 1 to 8, characterized in that teeth of the auxiliary gear wheels (30, 31) of the transfer cylinders are wider than teeth of the drive gear wheels (21, 25) of the transfer cylinders.
  10. The printing unit according to any one of the Claims 1 to 9, characterized in that the auxiliary gear wheels (30, 31) of the transfer cylinders have a larger modulus than the drive gear wheels (21, 25) of the transfer cylinders.
EP11007792.2A 2010-09-30 2011-09-24 Print unit Active EP2650129B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010047180 DE102010047180A1 (en) 2010-09-30 2010-09-30 Auxiliary teeth on the rubber cylinders of a rubber-rubber printing unit

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EP2650129A1 EP2650129A1 (en) 2013-10-16
EP2650129B1 true EP2650129B1 (en) 2016-08-31

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DE2725030C3 (en) * 1977-06-03 1982-01-07 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Changeover device for a convertible satellite printing unit
DE19746108C2 (en) * 1997-10-17 2002-12-19 Roland Man Druckmasch Drive arrangement for printing cylinders of a rotary printing press
DE202004019776U1 (en) * 2004-12-22 2006-05-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Drive gear for machine tool e.g. lathe, has intermediate gearwheel in interference with drive and output gearwheels and supported on carrier, which has attachment section adjustably fastened on housing, in radially movable manner
JP4829291B2 (en) * 2005-04-11 2011-12-07 ゴス インターナショナル アメリカス インコーポレイテッド Printing unit that enables automatic plating using a single motor drive

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DE102010047180A1 (en) 2012-04-05

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