EP0741013B1 - Rotary printing machine comprising pivotally supported blanket cylinders - Google Patents

Rotary printing machine comprising pivotally supported blanket cylinders Download PDF

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Publication number
EP0741013B1
EP0741013B1 EP96810250A EP96810250A EP0741013B1 EP 0741013 B1 EP0741013 B1 EP 0741013B1 EP 96810250 A EP96810250 A EP 96810250A EP 96810250 A EP96810250 A EP 96810250A EP 0741013 B1 EP0741013 B1 EP 0741013B1
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EP
European Patent Office
Prior art keywords
printing
rubber
cylinders
blanket cylinders
printing units
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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.)
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EP96810250A
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German (de)
French (fr)
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EP0741013A3 (en
EP0741013A2 (en
Inventor
Peter Gertsch
Robert Imhof
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Wifag Maschinenfabrik AG
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Wifag Maschinenfabrik AG
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Publication of EP0741013A3 publication Critical patent/EP0741013A3/en
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    • 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 present invention relates to a rotary printing press rubber-rubber printing units arranged vertically one above the other.
  • the height of the printing tower which is kept low due to this H construction, has an effect disadvantageous on the accessibility of the components of the printing tower, in particular the cylinders and rollers. Between the H printing units arranged one above the other only a low maintenance tunnel remains, which is from Operating personnel can only be walked on in a bent posture. The same applies especially to the accessibility of the bottom and top printing units such Printing tower.
  • the two rubber cylinder pivotable from one another such that between the cylinders of such a printing unit an accessible space is formed by an operator be conveniently committed, for example for the purpose of roller replacement can.
  • each second of the rubber-rubber printing units arranged one above the other has swiveling rubber cylinders.
  • a particularly convenient access to all printing units of a printing tower is due to the pivoting of the rubber cylinders of all Printing units of a printing tower created.
  • the rubber-rubber printing units are preferably a printing tower either all arranged as " ⁇ " -shaped or "V" -shaped cylinder bridges. This makes the pressure tower particularly low. Another advantage is that justifies that the ink and fountain solution are the same for each printing unit Direction, either counter or by gravity, to the one in question Rubber cylinder is promoted. This improves the uniformity of the color structure of the printing units with each other.
  • Figure 1 shows a printing tower 20 of a rotary printing press, the four one above the other arranged arranged similar printing units 11, 12, 13 and 14.
  • Each these printing units 11-14 comprise a pair of impression and impression cylinders, namely blanket cylinders 2 and 4, the respectively associated plate cylinder 3rd and 5 and the plate cylinders 3 and 5 each subordinate color and Dampening units 6 and 7, of which only two are shown in the drawing.
  • the blanket cylinders 2 and 4 of the four printing units 11-14 arranged one above the other can be swung apart. Are representative of all printing units only the rubber cylinders 2 and 4 of the lowest printing unit 11 in their shown pivoted position.
  • the two rubber cylinders 2 and 4 each about the axes of rotation of their assigned plate cylinders 3 and 5 pivoted from one another into the positions designated by 2 'and 4' in FIG approximately vertically above their respective plate cylinders 3 and 4. After the Swinging is between the two rubber cylinders 2 'and 4' and assigned plate cylinders 3 and 5 and their subordinate color and Dampening units 6 and 7 opened a space 23, the maintenance and Adjustment work for the staff is easily accessible.
  • the gap 23 is in Figure 1 indicated as a rectangle and extends from the bottom 21 of the printing tower 20 to the second printing unit arranged above the lowermost printing unit 11 12. Its width corresponds approximately to the clear distance between the two Plate cylinders 3 and 5.
  • the total now for maintenance and adjustment work Available positions or rooms are also indicated in Figure 1.
  • As in Conventional design also has the staff from the outside, for example on Floor 21 or a vertically movable maintenance platform 31 of the printing tower 20 standing, access to the printing units.
  • the same now stands for other Freedom of movement of the space 23 formed according to the invention is available.
  • the cylinders and rollers of the printing units 11 forming the printing tower 20 14 form all " ⁇ " - or "V" -shaped cylinder bridges. For one, it is through this uniform alignment of the cylinders and rollers the largest possible, namely highest possible, space 23 is formed and on the other hand, the color and Dampening solution flow to all rubber cylinders 2 and 4 always in the same direction. In principle, both advantages could also be achieved with printing units 11-14 which Form "V" -shaped cylinder bridges. In this case, the color transport would be with the support of gravity instead of against it, as in the exemplary embodiment, respectively.
  • Gap 23 is sufficient if only every second of the printing units 11 - 14, preferably the lowest printing unit 11 and the next but one printing unit 13, has swiveling rubber cylinders 2 and 4.
  • FIGS swiveling rubber cylinders 2 and 4 ( Figure 2) and a pressure tower 20 after State of the art (FIG. 3) with four printing units arranged one above the other are arranged to form H-shaped cylinder bridges.
  • both printing towers 20 eight single-color printing units are arranged, two printing units each one Form rubber-rubber printing unit.
  • the cylinders and rollers of the printing tower 20 according to Figure 2 too Maintenance and adjustment work more easily accessible. Under and over the in 3 remain in a conventional manner arranged in an H-shape only very low maintenance tunnel T free.
  • This conventional maintenance tunnel T are lying down or at most in a stooped posture, which makes maintenance and Adjustment work can be made considerably more difficult.
  • With the printing material web B drawn in are such works because of the printing material web crossing the maintenance tunnel T. impossible.
  • the entire space 23 available by pivoting the rubber cylinders 2 and 4 can be kept almost entirely free.
  • the drawn-in printing material web B 1 is guided near one side of the intermediate space 23, ie at a short distance from one of the plate cylinders 4 or 5 and the pivoted-off rubber cylinder 2 or 3.
  • the web deflecting rollers are to be arranged in the region of the intermediate space 23 formed in this way on one of the sides of this intermediate space 23, as can be seen in FIG. 4 using the example of two times 1 + 1 color production per double printing unit.
  • the two printing towers 20, in accordance with FIGS. 2 and 3, are again placed next to one another for comparison purposes.
  • the printing towers 20 are each configured for two times 1 + 1 color production per double printing unit.
  • the accessibility of at least one of the two printing units, each forming a printing unit is ensured only via the very uncomfortable low maintenance tunnels T for each conceivable guidance of the printing material webs B 1 - B 4 .
  • work can only be carried out from the outside in a stooped posture on the respective lower printing units 11 and 13 of the two H-shaped cylinder bridges.
  • each printing unit The free passage to the left and right of each printing unit is greatly reduced by the printing material web that runs in and out at the side.
  • the top pair of rubber cylinders of each H-cylinder bridge are not accessible when the web is retracted, for example for changing plates or cleaning a rubber blanket.
  • a corresponding effort is to be made by providing appropriate web shifting means, as indicated at 51 and 52, or other cylinder release devices.
  • the printing material web is guided with the rubber cylinders 2 and 4 pivoted away as close as possible to one of the pivoted rubber cylinders, ie close to the sides of the intermediate space 23.
  • This is achieved in the exemplary embodiment by a corresponding arrangement of the web deflecting rollers which are arranged in front of the web inlet and behind the web outlet in or out of the printing units, the rubber cylinders 2 and 4 of which form the intermediate space 23 between them in the pivoted-down position 2 'and 4'.
  • the two web deflection rollers 41 and 42 are indicated in FIG.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)

Description

Die vorliegende Erfindung betrifft eine Rotationsdruckmaschine mit vertikal übereinander angeordneten Gummi-Gummi-Druckeinheiten.The present invention relates to a rotary printing press rubber-rubber printing units arranged vertically one above the other.

Wegen der oft begrenzten Raumhöhe in Zeitungsbetrieben sind Rotationsdruckmaschinen in Kompaktbauweise entwickelt worden. Hierbei sind beispielsweise acht Einfarbendruckwerke so angeordnet, daß zwei aufeinanderfolgende Druckeinheiten eine sogenannte H-Druckeinheit bilden. Ein Beispiel für die Kompaktbauweise ist in dem Special Report 6.16 der ifra, Juli 1994, Seiten 15 und 18, abgebildet. Es handelt sich hierbei um sogenannte Achtertürme mit H-förmigen Druckeinheiten. Because of the often limited room height in newspaper companies, rotary printing presses are developed in a compact design. Here are eight, for example Single color printing units arranged so that two successive printing units form a so-called H-printing unit. An example of the compact design is in Special Report 6.16 of ifra, July 1994, pages 15 and 18. It These are so-called eight-high towers with H-shaped printing units.

Die durch diese H-Bauweise niedrig gehaltene Bauhöhe des Druckturms wirkt sich nachteilig auf die Zugänglichkeit der Komponenten des Druckturms, insbesondere die Zylinder und Walzen, aus. Zwischen den übereinander angeordneten H-Druckeinheiten bleibt lediglich ein niedriger Wartungstunnel frei, der vom Bedienpersonal nur in gebückter Haltung begehbar ist. Das gleiche gilt besonders für die Zugänglichkeit des untersten und des obersten Druckwerks solch eines Druckturms. The height of the printing tower, which is kept low due to this H construction, has an effect disadvantageous on the accessibility of the components of the printing tower, in particular the cylinders and rollers. Between the H printing units arranged one above the other only a low maintenance tunnel remains, which is from Operating personnel can only be walked on in a bent posture. The same applies especially to the accessibility of the bottom and top printing units such Printing tower.

Aus der Druckschrift DE-OS 22 34 089 ist eine Vorrichtung bekannt geworden, bei der zur Bildung eines begehbaren Zwischenraumes, die Druckwerke gegenüber dem Maschinengestell verschiebbar angeordnet sind, wobei aber die Lagerstellen der gegendruckzylinder gegenüber den Druckwerken in ihrer örtlichen Position verbleiben.From the document DE-OS 22 34 089 a device has become known in which Formation of an accessible space, the printing units opposite the machine frame are arranged displaceably, but with the bearing points of the counter-pressure cylinders opposite the printing units remain in their local position.

Weiter ist aus der US-PS 4,960,049 eine Vorrichtung bekannt geworden, bei der eine erste Druckeinheit von einer zweiten Druckeinheit um eine vertikale Achse abgeschwenkt werden kann. Furthermore, a device has become known from US Pat. No. 4,960,049 in which a first Printing unit can be pivoted from a second printing unit about a vertical axis can.

Es ist die Aufgabe der Erfindung, eine Rotationsdruckmaschine mit im wesentlichen vertikal übereinander angeordneten Druckstellen bzw. Druckeinheiten zu schaffen, die flach baut und deren die Druckeinheiten bildenden Zylinder und Walzen beispielsweise Einstell- und Wartungsarbeiten trotz dem bequem zugänglich sind.It is the object of the invention to provide a rotary printing press with essentially to create vertically superimposed pressure points or printing units, which builds flat and whose cylinders and rollers form the printing units, for example Adjustment and maintenance work despite being easily accessible.

Diese Aufgabe wird durch dem Gegenstand von Anspruch 1 gelöst.This object is solved by the subject matter of claim 1.

Die Unteransprüche sind auf vorteilhafte Ausgestaltungen der Erfindung gerichtet.The subclaims are directed to advantageous embodiments of the invention.

Erfindungsgemäß sind bei einer gattungsgemäßen Rotationsdruckmaschine die beiden gummituckzylinder voneinander abschwenkbar derart, daß zwischen den Zylindern solch einer Druckeinheit ein begehbarer Zwischenraum gebildet wird, der von einer Bedienperson bequem, beispielsweise zum Zwecke eines Walzenaustausches begangen werden kann.According to the invention in a generic rotary printing press the two rubber cylinder pivotable from one another such that between the cylinders of such a printing unit an accessible space is formed by an operator be conveniently committed, for example for the purpose of roller replacement can.

Es entspricht einer bevorzugten Ausführungsform der Erfindung, daß zumindest jede zweite der übereinander angeordneten Gummi-Gummi-Druckeinheiten voneinander abschwenkbare Gummizylinder aufweist. Bereits der dadurch nach dem Abschwenken der beiden Gummizylinder gebildete Zwischenraum ermöglicht die bequeme Zugänglichkeit. Ein besonders bequemer Zugang zu allen Druckeinheiten eines Druckturms wird durch die Abschwenkbarkeit der Gummizylinder aller Druckeinheiten eines Druckturms geschaffen. It corresponds to a preferred embodiment of the invention that at least each second of the rubber-rubber printing units arranged one above the other has swiveling rubber cylinders. Already after swiveling the space formed by the two rubber cylinders enables the easy access. A particularly convenient access to all printing units of a printing tower is due to the pivoting of the rubber cylinders of all Printing units of a printing tower created.

Bevorzugterweise sind die Gummi-Gummi-Druckeinheiten eines Druckturms entweder alle als "∧"-förmige oder "V"-förmige Zylinderbrücken angeordnet. Hierdurch baut der Druckturm besonders niedrig. Ein weiterer Vorteil liegt darin begründet, daß die Farbe und das Feuchtmittel für jede Druckeinheit in die gleiche Richtung, entweder entgegen oder mit der Schwerkraft, zum betreffenden Gummizylinder gefördert wird. Dies verbessert die Gleichmäßigkeit des Farbaufbaus der Druckeinheiten untereinander.The rubber-rubber printing units are preferably a printing tower either all arranged as "∧" -shaped or "V" -shaped cylinder bridges. This makes the pressure tower particularly low. Another advantage is that justifies that the ink and fountain solution are the same for each printing unit Direction, either counter or by gravity, to the one in question Rubber cylinder is promoted. This improves the uniformity of the color structure of the printing units with each other.

Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend anhand der Figuren beschrieben. Es zeigen:

Fig. 1
einen Druckturm entsprechend der Erfindung,
Fig. 2 und 3
eine Gegenüberstellung eines Druckturms nach Fig. 1 und eines Druckturms nach dem Stand der Technik, die jeweils für den Vierfarbendruck ausgebildet sind, und
Fig. 4 und 5
einem Druckturm entsprechend Fig. 1 in Gegenüberstellung zu einen Druckturm nach dem Stand der Technik, wobei beide Drucktürme für den zweimal 1 + 1 - Farbdruck ausgebildet sind.
A preferred embodiment of the invention is described below with reference to the figures. Show it:
Fig. 1
a printing tower according to the invention,
2 and 3
a comparison of a printing tower of FIG. 1 and a printing tower according to the prior art, which are each designed for four-color printing, and
4 and 5
a printing tower corresponding to FIG. 1 in comparison to a printing tower according to the prior art, both printing towers being designed for twice 1 + 1 color printing.

Figur 1 zeigt einen Druckturm 20 einer Rotationsdruckmaschine, der vier übereinander angeordnete gleichartige Druckeinheiten 11, 12, 13 und 14 aufweist. Jede dieser Druckeinheiten 11 - 14 umfaßt ein Paar von Druck- und Gegendruckzylindern, nämlich Gummituchzylinder 2 und 4, deren jeweils zugeordnete Plattenzylinder 3 und 5 sowie den Plattenzylindern 3 und 5 jeweils nachgeordnete Farb- und Feuchtwerke 6 und 7, von denen jedoch nur zwei zeichnerisch dargestellt sind.Figure 1 shows a printing tower 20 of a rotary printing press, the four one above the other arranged arranged similar printing units 11, 12, 13 and 14. Each these printing units 11-14 comprise a pair of impression and impression cylinders, namely blanket cylinders 2 and 4, the respectively associated plate cylinder 3rd and 5 and the plate cylinders 3 and 5 each subordinate color and Dampening units 6 and 7, of which only two are shown in the drawing.

Die Gummizylinder 2 und 4 der vier übereinander angeordneten Druckeinheiten 11-14 sind voneinander abschwenkbar. Stellvertretend für alle Druckeinheiten sind lediglich die Gummizylinder 2 und 4 der untersten Druckeinheit 11 in ihrer abgeschwenkten Stellung dargestellt. Hierbei werden die beiden Gummizylinder 2 und 4 jeweils um die Drehachsen ihrer zugeordneten Plattenzylinder 3 und 5 voneinander abgeschwenkt in die in Figur 1 mit 2' und 4' bezeichneten Stellungen in etwa vertikal über ihren jeweiligen Plattenzylindern 3 und 4. Nach dem Abschwenken ist zwischen den beiden Gummizylindern 2' und 4' und den zugeordneten Plattenzylindern 3 und 5 sowie deren nachgeordneten Farb- und Feuchtwerken 6 und 7 ein Zwischenraum 23 eröffnet, der zu Wartungs- und Einstellarbeiten für das Personal bequem begehbar ist. Der Zwischenraum 23 ist in Figur 1 als Rechteck angedeutet und erstreckt sich vom Boden 21 des Druckturms 20 bis zu der über der untersten Druckeinheit 11 angeordneten zweiten Druckeinheit 12. Seine Breite entspricht in etwa dem lichten Abstand zwischen den beiden Plattenzylindern 3 und 5. Die nunmehr insgesamt für Wartung- und Einstellarbeiten verfügbaren Stellungen oder Räume sind in Figur 1 ebenfalls angedeutet. Wie bei herkömmlicher Bauweise auch, hat das Personal von außen, beispielsweise am Boden 21 oder einer vertikal verfahrbaren Wartungsplattform 31 des Druckturms 20 stehend, Zugriff auf die Druckeinheiten. Zusätzlich steht jetzt bei gleicher sonstiger Bewegungsfreiheit der erfindungsgemäß gebildete Zwischenraum 23 zur Verfügung.The blanket cylinders 2 and 4 of the four printing units 11-14 arranged one above the other can be swung apart. Are representative of all printing units only the rubber cylinders 2 and 4 of the lowest printing unit 11 in their shown pivoted position. The two rubber cylinders 2 and 4 each about the axes of rotation of their assigned plate cylinders 3 and 5 pivoted from one another into the positions designated by 2 'and 4' in FIG approximately vertically above their respective plate cylinders 3 and 4. After the Swinging is between the two rubber cylinders 2 'and 4' and assigned plate cylinders 3 and 5 and their subordinate color and Dampening units 6 and 7 opened a space 23, the maintenance and Adjustment work for the staff is easily accessible. The gap 23 is in Figure 1 indicated as a rectangle and extends from the bottom 21 of the printing tower 20 to the second printing unit arranged above the lowermost printing unit 11 12. Its width corresponds approximately to the clear distance between the two Plate cylinders 3 and 5. The total now for maintenance and adjustment work Available positions or rooms are also indicated in Figure 1. As in Conventional design also has the staff from the outside, for example on Floor 21 or a vertically movable maintenance platform 31 of the printing tower 20 standing, access to the printing units. In addition, the same now stands for other Freedom of movement of the space 23 formed according to the invention is available.

Die Zylinder und Walzen der den Druckturm 20 bildenden Druckeinheiten 11 - 14 bilden alle "∧"- bzw. "V"-förmige Zylinderbrücken. Zum einen wird durch diese einheitliche Ausrichtung der Zylinder und Walzen der größtmögliche, nämlich höchstmögliche, Zwischenraum 23 gebildet und zum anderen erfolgt der Farb-und Feuchtmittelfluß zu allen Gummizylindern 2 und 4 stets in die gleiche Richtung. Beide Vorteile wären grundsätzlich auch mit Druckeinheiten 11 - 14 erzielbar, die "V"-förmige Zylinderbrücken bilden. In diesem Fall würde der Farbtransport mit der Unterstützung der Schwerkraft anstatt dagegen, wie im Ausführungsbeispiel, erfolgen.The cylinders and rollers of the printing units 11 forming the printing tower 20 14 form all "∧" - or "V" -shaped cylinder bridges. For one, it is through this uniform alignment of the cylinders and rollers the largest possible, namely highest possible, space 23 is formed and on the other hand, the color and Dampening solution flow to all rubber cylinders 2 and 4 always in the same direction. In principle, both advantages could also be achieved with printing units 11-14 which Form "V" -shaped cylinder bridges. In this case, the color transport would be with the support of gravity instead of against it, as in the exemplary embodiment, respectively.

Aus Figur 1 ist ersichtlich, daß es zur Ausbildung eines bequem zu begehenden Zwischenraums 23 ausreicht, wenn nur jede zweite der Druckeinheiten 11 - 14, bevorzugterweise die unterste Druckeinheit 11 und die übernächste Druckeinheit 13, über abschwenkbare Gummizylinder 2 und 4 verfügt. From Figure 1 it can be seen that it is to form a convenient to walk Gap 23 is sufficient if only every second of the printing units 11 - 14, preferably the lowest printing unit 11 and the next but one printing unit 13, has swiveling rubber cylinders 2 and 4.

In den Figuren 2 und 3 sind der Vergleichbarkeit wegen ein Druckturm 20 mit abschwenkbaren Gummizylindern 2 und 4 (Figur 2) und ein Druckturm 20 nach dem Stand der Technik (Figur 3) mit vier übereinander angeordneten Druckeinheiten, die zu H-förmigen Zylinderbrücken angeordnet sind, dargestellt. In beiden Drucktürmen 20 sind acht Einfarbendruckwerke angeordnet, wobei jeweils zwei Druckwerke eine Gummi-Gummi-Druckeinheit bilden. Bei gleicher Bauhöhe der beiden Drucktürme 20 sind die Zylinder und Walzen des Druckturms 20 entsprechend Figur 2 zu Wartungs- und Einstellarbeiten bequemer zugänglich. Unter und über den in herkömmlicher Weise H-förmig angeordneten Druckeinheiten nach Figur 3 bleiben nur sehr niedrige Wartungstunnel T frei. Diese herkömmlichen Wartungstunnel T sind liegend oder allenfalls in gebückter Haltung begehbar, wodurch Wartungs-und Einstellarbeiten erheblich erschwert werden. Bei eingezogener Bedruckstoffbahn B, sind solche Arbeiten wegen der die Wartungstunnel T durchquerenden Bedruckstoffbahn unmöglich.For the sake of comparability, a pressure tower 20 is shown in FIGS swiveling rubber cylinders 2 and 4 (Figure 2) and a pressure tower 20 after State of the art (FIG. 3) with four printing units arranged one above the other are arranged to form H-shaped cylinder bridges. In both printing towers 20 eight single-color printing units are arranged, two printing units each one Form rubber-rubber printing unit. With the same height of the two printing towers 20 are the cylinders and rollers of the printing tower 20 according to Figure 2 too Maintenance and adjustment work more easily accessible. Under and over the in 3 remain in a conventional manner arranged in an H-shape only very low maintenance tunnel T free. This conventional maintenance tunnel T are lying down or at most in a stooped posture, which makes maintenance and Adjustment work can be made considerably more difficult. With the printing material web B drawn in, are such works because of the printing material web crossing the maintenance tunnel T. impossible.

Bei entsprechender Anordnung der Bahnumlenkwalzen vor dem Einlauf und nach dem Auslauf der Bedruckstoffbahn B, in eine Druckeinheit bzw. aus dieser Druckeinheit kann der gesamte, durch das Abschwenken der Gummizylinder 2 und 4 verfügbare Zwischenraum 23 fast gänzlich freigehalten werden. Die eingezogene Bedruckstoffbahn B1 wird nahe einer Seite des Zwischenraums 23, d.h. in einem geringen Abstand von einem der Plattenzylinder 4 oder 5 und dem abgeschwenkten Gummizylinder 2 oder 3 geführt. Hierzu sind die Bahnumlenkwalzen im Bereich des derart gebildeten Zwischenraums 23 zu einer der Seiten dieses Zwischenraums 23 anzuordnen, wie dies in Figur 4 am Beispiel einer zwei mal 1 + 1 Farbproduktion pro Doppeldruckeinheit erkennbar ist.With an appropriate arrangement of the web deflection rollers before the inlet and after the outlet of the printing material web B, in a printing unit or from this printing unit, the entire space 23 available by pivoting the rubber cylinders 2 and 4 can be kept almost entirely free. The drawn-in printing material web B 1 is guided near one side of the intermediate space 23, ie at a short distance from one of the plate cylinders 4 or 5 and the pivoted-off rubber cylinder 2 or 3. For this purpose, the web deflecting rollers are to be arranged in the region of the intermediate space 23 formed in this way on one of the sides of this intermediate space 23, as can be seen in FIG. 4 using the example of two times 1 + 1 color production per double printing unit.

In den Figuren 4 und 5 sind die beiden Drucktürme 20 entsprechend den Figuren 2 und 3 wiederum zu Vergleichszwecken nebeneinander gestellt. Hierbei sind die Drucktürme 20 jeweils für eine zwei mal 1 + 1 Farbproduktion pro Doppeldruckeinheit konfiguriert. Bei den zu H-förmigen Zylinderbrücken angeordneten Druckeinheiten des herkömmlichen Druckturms nach Figur 5 ist bei jeder denkbaren Führung der Bedruckstoffbahnen B1 - B4 die Zugänglichkeit von zumindest einem der beiden jeweils eine Druckeinheit bildenden Druckwerke nur über die sehr unbequem zu begehenden niedrigen Wartungstunnels T gewährleistet. So kann bei der in Figur 5 dargestellten Bahnführung an den jeweils unteren Druckeinheiten 11 und 13 der beiden H-förmigen Zylinderbrücken auch von außen nur in gebückter Haltung gearbeitet werden. Der freie Durchgang links und rechts jeder Druckeinheiten wird durch die seitlich ein- bzw. auslaufende Bedruckstoffbahn stark reduziert. Die Behinderung ist um so gravierender, je gedrungener die Druckeinheiten gebaut sind. Desweiteren sind in diesem Fall die jeweils oberen Gummizylinderpaare jeder H-Zylinderbrücke bei eingezogener Bahn, beispielsweise für Plattenwechsel oder eine Gummituchreinigung, nicht zugänglich. Um die Zugänglichkeit dieser Zylinder bei Maschinenstillstand und eingezogener Bahn trotzdem sicherzustellen, ist ein entsprechender Aufwand durch die Bereitstellung entsprechender Bahnverschiebemittel, wie sie bei 51 und 52 angedeutet sind, oder sonstiger Zylinderfreistellungsvorrichtungen zu betreiben.In FIGS. 4 and 5, the two printing towers 20, in accordance with FIGS. 2 and 3, are again placed next to one another for comparison purposes. Here, the printing towers 20 are each configured for two times 1 + 1 color production per double printing unit. In the case of the printing units of the conventional printing tower according to FIG. 5, which are arranged in the form of H-shaped cylinder bridges, the accessibility of at least one of the two printing units, each forming a printing unit, is ensured only via the very uncomfortable low maintenance tunnels T for each conceivable guidance of the printing material webs B 1 - B 4 . Thus, in the web guide shown in FIG. 5, work can only be carried out from the outside in a stooped posture on the respective lower printing units 11 and 13 of the two H-shaped cylinder bridges. The free passage to the left and right of each printing unit is greatly reduced by the printing material web that runs in and out at the side. The more compact the pressure units are, the more serious the disability is. Furthermore, in this case, the top pair of rubber cylinders of each H-cylinder bridge are not accessible when the web is retracted, for example for changing plates or cleaning a rubber blanket. In order to nevertheless ensure the accessibility of these cylinders when the machine is at a standstill and the web is drawn in, a corresponding effort is to be made by providing appropriate web shifting means, as indicated at 51 and 52, or other cylinder release devices.

Falls, wie in Figur 4 beispielhaft dargestellt, vier Bedruckstoffbahnen B1 -B4 jeweils in einer der vier Druckeinheiten 11 - 14 beidseitig einfarbig bedruckt werden, sind die Bahnen B1 - B4 so geführt, daß die Durchgänge links und rechts der Druckeinheiten 11 - 14 freibleiben. Sämtliche Gummizylinderpaare 2 und 4 sind auch bei eingezogener Bedruckstoffbahn zugänglich, ohne daß hierfür Bahnverschiebe-oder Zylinderfreistellungsmittel erforderlich wären. Pro Paar von übereinander angeordneten Druckeinheiten 11 und 12 sowie 13 und 14 sind bei der dargestellten Bahnführung jeweils das untere linke und das obere rechte Druckwerk von außen und das untere rechte sowie das obere linke Druckwerk über den durch das Abschwenken gebildeten Zwischenraum 23 bequem zugänglich. Um diese bequeme Zugänglichkeit auch bei eingezogener Bedruckstoffbahn zu erhalten, wird die Bedruckstoffbahn bei abgeschwenkten Gummizylindern 2 und 4 in einem möglichst geringen Abstand von einem der abgeschwenkten Gummizylinder, d.h. nahe den Seiten des Zwischenraums 23, geführt. Dies wird im Ausführungsbeispiel durch entsprechende Anordnung der Bahnumlenkwalzen erreicht, die vor dem Bahneinlauf und hinter dem Bahnauslauf in bzw. aus den Druckeinheiten angeordnet sind, deren Gummizylinder 2 und 4 in der abgeschwenkten Stellung 2' und 4' zwischen sich den Zwischenraum 23 ausbilden. In Figur 4 sind hierfür die beiden Bahnumlenkwalzen 41 und 42 angedeutet.If, as shown by way of example in FIG. 4, four printing material webs B 1 -B 4 are printed in one color on both sides in one of the four printing units 11 - 14, the webs B 1 - B 4 are guided such that the passages on the left and right of the printing units 11 - 14 remain free. All pairs of rubber cylinders 2 and 4 are accessible even when the printing material web is drawn in, without the need for web displacement or cylinder release means. For each pair of printing units 11 and 12 and 13 and 14 arranged one above the other, the lower left and upper right printing units are easily accessible from the outside and the lower right and upper left printing units are easily accessible via the space 23 formed by the pivoting in the illustrated web guide. In order to maintain this convenient accessibility even when the printing material web is retracted, the printing material web is guided with the rubber cylinders 2 and 4 pivoted away as close as possible to one of the pivoted rubber cylinders, ie close to the sides of the intermediate space 23. This is achieved in the exemplary embodiment by a corresponding arrangement of the web deflecting rollers which are arranged in front of the web inlet and behind the web outlet in or out of the printing units, the rubber cylinders 2 and 4 of which form the intermediate space 23 between them in the pivoted-down position 2 'and 4'. For this purpose, the two web deflection rollers 41 and 42 are indicated in FIG.

Claims (4)

  1. A rotary printing machine having rubber/rubber printing units (11, 12, 13, 14) arranged vertically one above the other, characterized in that the two rubber blanket cylinders (2, 4) of at least one printing unit (11, 12, 13, 14) may be pivoted away from one another about pivot axes which are in each case parallel to the cylinder axes thereof far enough for the intermediate space (23) formed between them to be accessible.
  2. A rotary printing machine according to Claim 1, characterized in that at least every second one of the rubber/rubber printing units arranged one above the other has blanket cylinders (2, 4) which may be pivoted away from one another.
  3. A rotary printing machine according to Claim 1 or 2, characterized in that the rubber/rubber printing units (11-14) of the printing tower (20) either all form ∧-shaped or V-shaped cylinder frames.
  4. A rotary printing machine according to one of the preceding claims, characterized in that a web deflector roller (41) arranged in front of the web entry point between two blanket cylinders (2, 4) which may be pivoted away and a roller (42) after the web exit point out of these blanket cylinders (2, 4) are arranged close to one side of the intermediate space (23) formed after pivoting away.
EP96810250A 1995-05-05 1996-04-19 Rotary printing machine comprising pivotally supported blanket cylinders Expired - Lifetime EP0741013B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19516653 1995-05-05
DE19516653A DE19516653C1 (en) 1995-05-05 1995-05-05 Rotary printing machine with swiveling rubber cylinders

Publications (3)

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EP0741013A2 EP0741013A2 (en) 1996-11-06
EP0741013A3 EP0741013A3 (en) 1997-05-21
EP0741013B1 true EP0741013B1 (en) 1999-01-27

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EP96810250A Expired - Lifetime EP0741013B1 (en) 1995-05-05 1996-04-19 Rotary printing machine comprising pivotally supported blanket cylinders

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EP (1) EP0741013B1 (en)
DE (2) DE19516653C1 (en)
ES (1) ES2128152T3 (en)

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DE19833468C2 (en) * 1998-07-24 2000-05-18 Koenig & Bauer Ag Printing units
DE10003290A1 (en) * 2000-01-27 2001-08-02 Roland Man Druckmasch Offset rotary printing machine with superimposed bridge printing units has printing mechanisms easily usable whilst assuring low structural height, with one or more ink rollers located on both sides in side parts
KR100564781B1 (en) 2001-04-09 2006-03-27 쾨니히 운트 바우어 아크티엔게젤샤프트 Printing Group Pertaining to a Printing Machine
DE10150081B4 (en) * 2001-10-10 2005-12-15 Koenig & Bauer Ag Rotary press
ATE398529T1 (en) * 2005-09-30 2008-07-15 Gimaco Ing Ag ROLL ROTARY PRINTING MACHINE
DE102010002615B4 (en) * 2010-03-05 2020-01-09 Koenig & Bauer Ag Printing tower of a printing press and a method for transporting at least one printing material through a printing tower of a printing press that can be divided into at least two side frames
DE102010002613A1 (en) * 2010-03-05 2011-09-08 Koenig & Bauer Aktiengesellschaft Printing tower of a printing press and a method for providing a footprint of a printing tower of a printing press
JP7271992B2 (en) * 2019-02-18 2023-05-12 コニカミノルタ株式会社 printer

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DE2234089C3 (en) * 1972-07-08 1975-01-23 Automatic Druckmaschinenfabrik Dr. W. Hinniger U. Soehne, 1000 Berlin Offset web-fed rotary printing press
JPS55158969A (en) * 1979-05-26 1980-12-10 Tokyo Kikai Seisakusho:Kk Multipurpose offset printing press
DE2929654A1 (en) * 1979-07-21 1981-02-12 Koenig & Bauer Ag PRINTING UNIT FOR OFFSET ROLLER ROTATION PRINTING MACHINES
GB8611722D0 (en) * 1986-05-14 1986-06-25 Drg Uk Ltd Processing paper & other webs
USRE34483E (en) * 1986-05-14 1993-12-21 Strachan Henshaw Machinery Limited Processing paper and other webs
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DE4408025A1 (en) * 1994-03-10 1995-09-14 Koenig & Bauer Ag Printing unit for a multi-color web-fed rotary printing machine

Also Published As

Publication number Publication date
US5816157A (en) 1998-10-06
DE19516653C1 (en) 1996-09-19
EP0741013A3 (en) 1997-05-21
DE59601207D1 (en) 1999-03-11
ES2128152T3 (en) 1999-05-01
EP0741013A2 (en) 1996-11-06

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