EP0158259B1 - Tripping device for the blanket cylinders of a printing unit in reel-fed offset printing machines - Google Patents

Tripping device for the blanket cylinders of a printing unit in reel-fed offset printing machines Download PDF

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Publication number
EP0158259B1
EP0158259B1 EP85103932A EP85103932A EP0158259B1 EP 0158259 B1 EP0158259 B1 EP 0158259B1 EP 85103932 A EP85103932 A EP 85103932A EP 85103932 A EP85103932 A EP 85103932A EP 0158259 B1 EP0158259 B1 EP 0158259B1
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EP
European Patent Office
Prior art keywords
cylinders
printing unit
straight line
rubber blanket
eccentric
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EP85103932A
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German (de)
French (fr)
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EP0158259A2 (en
EP0158259A3 (en
Inventor
Nikolaus Nawrath
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Manroland AG
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MAN Roland Druckmaschinen AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/28—Bearings mounted eccentrically of the cylinder axis

Definitions

  • the invention relates to a switching device for the blanket cylinders of a web-fed offset printing press, in which four printing unit cylinders are arranged one above the other, essentially on an inclined line with respect to an approximately horizontally running printing carrier web, the printing carrier web being able to be carried out between the two inner printing cylinders designed as blanket cylinders is.
  • the object of the present invention is to separate the two central cylinders from one another in a printing unit of the type described at the outset by means of a single adjusting device, without the outer cylinders having to be pivoted beforehand.
  • the illustrated printing units 1 according to FIGS. 1 to 3 can each be arranged several times in succession for the application of multi-color prints on both sides of a printing material web T, such printing units each comprising four cylinders 2, 3, 4, 5 lying one behind the other, which approximately on a common center line G are positioned.
  • the cylinders 2, 3, 4, 5 are supported against each other, whereby the risk of deflection and thus an unfavorable effect on the printing result is avoided or reduced.
  • the printed material web T to be printed is guided approximately horizontally through the two middle cylinders 3, 4, the so-called blanket cylinders, so that it can be printed on both sides.
  • the straight line G is more or less inclined, that is to say it is not at right angles to the direction of movement of the printed material web T.
  • each printing unit side wall 1 of the printing units shown according to FIGS. 1 to 3 for a web-fed rotary offset machine bores A, B are provided for the two middle cylinders 3, 4 for mounting the cylinders 3, 4.
  • the cylinder pins 6, 7 of the blanket cylinders 3, 4 are each in two eccentric bushes, namely an eccentrically drilled outer sleeve 8 and an eccentrically drilled inner sleeve 9 for the cylinder pin 6 and an eccentrically drilled outer sleeve 10 and an eccentrically drilled inner sleeve 11 for the cylinder pin 7 , positioned.
  • Each of the eccentric bushes 8 to 11 is assigned an adjusting lever 12, 13, 14, 15.
  • the adjusting levers 12, 14 for the inner eccentric bushes 9, 11 are connected to a pull rod 17 and the adjusting levers 13, 15 for the outer eccentric bushes 8, 10 are connected to a pull rod 16.
  • an adjusting device 20, 21 is connected to a pair of eccentric bushes, for example the lower one, by means of which the eccentric bushes 10, 11 can be rotated via tie rods 18, 19.
  • the movement of the tie rods 18, 19 and thus the rotation the eccentric bushes 10, 11 takes place with the aid of an adjusting device 20, 21 which comprises a pivoting lever 20 which is arranged on an adjusting spindle 21.
  • the adjusting spindle 21 can be rotated by motor or by hand.
  • the adjusting spindle 21 is rotated clockwise to position 21 ', the adjusting levers 12 to 15 and the tie rods 16 to 19 assume the position 12', 13 ', 14', 15 ', 18', 19 'shown in dashed lines, so that a corresponding rotation of the eccentric bushes 8 to 11 takes place.
  • the adjusting levers 12 to 15 and the tie rods 16 to 19 are dimensioned such that all eccentric bushes 8 to 11 are rotated by the same amount, that is to say by the same degree of angle, when the adjusting spindle 21 is rotated. This ensures that the inner eccentric bushing 9 is turned by the same angular amount, but in the opposite direction as the outer eccentric bushing 8, when starting and stopping. The same applies to the inner eccentric bushing 11 and the outer eccentric bushing 10.
  • the pull rods 18, 19 could also act directly on the pull rods 16, 17.
  • the contact force between the outer cylinder, for example 2, and the associated inner cylinder, for example 3, can also be set individually to the desired dimension or to the desired contact pressure.
  • the reference numerals 22, 23 indicate the center of the cylinders 3, 4 in the switched-off state and the reference symbols 24, 25 indicate the center of the cylinders in the switched-on state.
  • the reference numerals 24, 25 indicate the center of the bore and the center of the inner eccentric bushes 9, 11.
  • the reference numerals 26, 27 and 26 ', 27' and 26 ", 27" refer to the center of the bores of the outer eccentric bushes 8, 10.
  • the reference numerals 22, 27 shown in FIG. 1 indicate that the mentioned centers of the upper inner cylinder 3 are always on the left side of the common straight line G and. the mentioned centers of the lower inner cylinder 4 come to lie on the right side of the common straight line G. 2 and 3, the reference numerals 22, 27 'and 22, 27 "and thus the center points of the cylinders 3 and 4 are either on the right side (FIG. 2) or on the left side (FIG. 3 ) of the straight line G. This ensures that when the inner cylinders 3, 4 move in the direction of the arrows P (positioning movement), the cylinders 3, 4 can be set against one another with the required force. 25 are as close as possible to the common line G.
  • FIGS. 2, 3 it is advantageous to move the outer cylinders 2 laterally (in each case slightly with respect to the straight line G) (FIG. 2 to the left, FIG. 3 to the right). This facilitates the outward movement of the inner cylinders 3, 4 to the right (FIG. 2) or to the left (FIG. 3) and the respective adjustment process.
  • the magnitude of the contact force between the inner cylinders 3, 4 and between these and the respective outer cylinders 2, 5 is determined by threaded bushings 28, which are located in the tie rods 16, 17, 18 and 19 and have threaded bushes 28 through which the tie rods 16 , 17, 18, 19 can be extended or shortened.

Description

Die Erfindung betrifft eine Schaltvorrichtung für die Gummituchzylinder einer Rollenrotations-Offsetdruckmaschine, in der im wesentlichen auf einer, bezogen auf eine etwa horizontal verlaufende Druckträgerbahn, schräg gestellten Geraden übereinander vier Druckwerkzylinder angeordnet sind, wobei zwischen den beiden inneren, als Gummituchzylinder ausgebildeten Druckzylindern die Druckträgerbahn durchführbar ist.The invention relates to a switching device for the blanket cylinders of a web-fed offset printing press, in which four printing unit cylinders are arranged one above the other, essentially on an inclined line with respect to an approximately horizontally running printing carrier web, the printing carrier web being able to be carried out between the two inner printing cylinders designed as blanket cylinders is.

Aus der DE-OS 3 225 360 ist bereits eine Rollenrotations-Offsetdruckmaschine mit einer Anzahl hintereinander angeordneter Druckwerke der vorangehend spezifizierten Art bekannt. Wenn die beiden mittleren Zylinder derartiger Druckwerke, das sind in der Regel die sogenannten Gummituchzylinder, voneinander getrennt werden sollen, um beispielsweise neue Gummitücher aufzuspannen, muß mindestens einer der äußeren Zylinder zuvor abgeschwenkt werden. In üblicher Weise sind die Zapfen aller Druckwerkzylinder in sogenannten Exzenterbüchsen gelagert, so daß durch Drehen derartiger Exzenterbüchsen die gewünschten Ab- und Anstellbewegungen in entsprechender Reihenfolge durchführbar sind. Gemäß der FR-A 2 350 957 wird z. B. jeweils bei einem ähnlichen Druckwerk ein innerer Gummituchzylinder mittels Doppelexzenter abgestellt, jedoch nicht in Richtung des Laufes der Druckträgerbahn. Die vier Zylinder des Druckwerkes liegen auch nicht etwa auf einer Geraden.From DE-OS 3 225 360, a web-fed rotary offset printing press with a number of printing units of the type specified above is known. If the two middle cylinders of such printing units, which are usually the so-called rubber blanket cylinders, are to be separated from one another, for example in order to clamp new rubber blankets, at least one of the outer cylinders must be swung out beforehand. In the usual way, the pins of all printing unit cylinders are mounted in so-called eccentric bushes, so that the desired stopping and adjusting movements can be carried out in a corresponding order by rotating such eccentric bushes. According to FR-A 2 350 957 z. B. each with a similar printing unit an inner blanket cylinder by means of a double eccentric, but not in the direction of the run of the print carrier web. The four cylinders of the printing unit are also not on a straight line.

Aufgabe der vorliegenden Erfindung ist es, mittels einer einzigen Stellvorrichtung die beiden mittleren Zylinder in einem Druckwerk der eingangs bezeichneten Gattung voneinander zu trennen, ohne daß vorher die äußeren Zylinder abgeschwenkt werden müssen.The object of the present invention is to separate the two central cylinders from one another in a printing unit of the type described at the outset by means of a single adjusting device, without the outer cylinders having to be pivoted beforehand.

Diese Aufgabe wird durch die Anwendung der Merkmale der kennzeichnenden Teile der Patentansprüche 1 und 2 gelöst.This object is achieved by applying the features of the characterizing parts of claims 1 and 2.

Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.Advantageous further developments result from the subclaims.

Aus der US-PS 3 527 165 ist es bekannt, mittels einer einzigen Stellvorrichtung die beiden mittleren Zylinder voneinander zu trennen, ohne daß vorher die äußeren Zylinder abgeschwenkt werden. Des weiteren zeigt die US-PS 3 800 698 die Lagerung eines Gummituchzylinders in zwei ineinander gelagerten Exzenterbüchsen. Die eine Exzenterbüchse ist zur An- und Abstellung und die andere für die Feineinstellung vorgesehen. Bei diesen bekannten Druckmaschinen sind jedoch die Achsen aller Zylinder nicht übereinander auf einer schräg zur Bahnlaufrichtung liegenden Geraden angeordnet. Die erwähnten Probleme bei der gattungsgemäßen Druckmaschine treten somit nicht auf. Bei der erfindungsgemäßen Druckwerkskonzeption ergibt sich der Vorteil, daß zwei mittlere, d. h. zwischen zwei äußeren, etwa auf der gleichen gemeinsamen Mittellinie angeordneten Zylindern positionierte Zylinder durch eine einzige Steuervorrichtung voneinander getrennt und gegeneinander anstellbar sind, wobei auch eine Trennung von dem jeweiligen äußeren Zylinder, das ist üblicherweise ein Plattenzylinder, erfolgt. Dadurch ist es nicht mehr erforderlich, die äußeren Zylinder verschwenkbar, beispielsweise in einem Exzenter, zu positionieren.From US Pat. No. 3,527,165 it is known to separate the two middle cylinders from one another by means of a single adjusting device without the outer cylinders being pivoted beforehand. Furthermore, US Pat. No. 3,800,698 shows the mounting of a blanket cylinder in two eccentric bushes which are mounted one inside the other. One eccentric bushing is intended for starting and stopping, and the other for fine adjustment. In these known printing machines, however, the axes of all the cylinders are not arranged one above the other on a straight line lying at an angle to the web running direction. The problems mentioned with the generic printing machine therefore do not occur. In the printing unit concept according to the invention, there is the advantage that two middle, ie. H. between two outer cylinders positioned approximately on the same common center line are separated from one another by a single control device and can be adjusted relative to one another, separation from the respective outer cylinder, which is usually a plate cylinder, also taking place. As a result, it is no longer necessary to pivot the outer cylinders, for example in an eccentric.

Im folgenden wird die Erfindung anhand dreier Ausführungsbeispiele beschrieben, wobei Bezug auf die beiliegenden Zeichnungen genommen wird. In diesen zeigen:

  • Fig. 1 eine erste Ausführungsform der Schaltvorrichtung, bei der die beiden inneren Zylinder in entgegengesetzter Richtung auseinander bewegt werden und
  • Fig. 2 und 3 zwei weitere Ausführungsformen, bei denen die beiden inneren Zylinder in gleicher Richtung, d.h. entweder nach rechts oder nach links, auseinander bewegt werden.
The invention is described below with reference to three exemplary embodiments, reference being made to the accompanying drawings. In these show:
  • Fig. 1 shows a first embodiment of the switching device in which the two inner cylinders are moved apart in the opposite direction and
  • 2 and 3 two further embodiments in which the two inner cylinders are moved apart in the same direction, ie either to the right or to the left.

Da in allen drei Figuren identische Bauteile vorhanden sind, werden jeweils die gleichen Bezugszeichen verwendet.Since identical components are present in all three figures, the same reference numerals are used in each case.

Die dargestellten Druckwerke 1 gemäß Fig. 1 bis 3 können jeweils mehrfach zum Aufbringen von Mehrfarbendrucken auf beiden Seiten einer Druckgutbahn T hintereinander angeordnet werden, wobei derartige Druckwerke jeweils vier hintereinanderliegende Zylinder 2, 3, 4, 5 umfassen, die etwa auf einer gemeinsamen Mittellinie G positioniert sind. Dadurch stützen sich die Zylinder 2, 3, 4, 5 gegeneinander ab, wodurch die Gefahr einer Durchbiegung und somit einer ungünstigen Einwirkung auf das Druckergebnis vermieden bzw. reduziert wird. Wie aus den Zeichnungen hervorgeht, wird jeweils die zu bedruckende Druckgutbahn T etwa horizontal durch die beiden mittleren Zylinder 3, 4, den sogenannten Gummituchzylindern, hindurchgeführt, so daß diese beidseitig bedruckbar ist. Um eine entsprechende Umschlingung der Druckgutbahn T um die beiden inneren Zylinder 3, 4 zu erreichen, ist die Gerade G mehr oder weniger geneigt, das heißt sie steht nicht rechtwinklig zur Bewegungsrichtung der Druckgutbahn T.The illustrated printing units 1 according to FIGS. 1 to 3 can each be arranged several times in succession for the application of multi-color prints on both sides of a printing material web T, such printing units each comprising four cylinders 2, 3, 4, 5 lying one behind the other, which approximately on a common center line G are positioned. As a result, the cylinders 2, 3, 4, 5 are supported against each other, whereby the risk of deflection and thus an unfavorable effect on the printing result is avoided or reduced. As can be seen from the drawings, the printed material web T to be printed is guided approximately horizontally through the two middle cylinders 3, 4, the so-called blanket cylinders, so that it can be printed on both sides. In order to achieve a corresponding wrapping of the printed material web T around the two inner cylinders 3, 4, the straight line G is more or less inclined, that is to say it is not at right angles to the direction of movement of the printed material web T.

In einer jeden Druckwerkseitenwand 1 der dargestellten Druckwerke gemäß den Figuren 1 bis 3 für eine Rollenrotations-Offsetmaschine sind jeweils für die beiden mittleren Zylinder 3, 4 Bohrungen A, B für die Lagerung der Zylinder 3, 4 vorgesehen. In diesen werden die Zylinderzapfen 6, 7 der Gummituchzylinder 3, 4 jeweils in zwei Exzenterbüchsen, nämlich einer exzentrisch ausgebohrten Außenbüchse 8 und einer exzentrisch ausgebohrten Innenbüchse 9 für den Zylinderzapfen 6 und einer exzentrisch ausgebohrten Außenbüchse 10 sowie einer exzentrisch ausgebohrten Innenbüchse 11 für den Zylinderzapfen 7, positioniert. Jeder der Exzenterbüchsen 8 bis 11 ist ein Stellhebel 12, 13, 14, 15 zugeordnet. Die Stellhebel 12, 14 für die inneren Exzenterbüchsen 9, 11 sind mit einer Zugstange 17 und die Stellhebel 13, 15 für die äußeren Exzenterbüchsen 8, 10 mit einer Zugstange 16 verbunden. Des weiteren ist mit einem Exzenterbüchsenpaar, beispielsweise dem unteren, eine Stellvorrichtung 20, 21 verbunden, mit deren Hilfe über Zugstangen 18, 19 die Exzenterbüchsen 10, 11 verdrehbar sind. Die Bewegung der Zugstangen 18, 19 und somit die Verdrehung der Exzenterbüchsen 10, 11 erfolgt mit Hilfe einer Stellvorrichtung 20, 21, die einen Schwenkhebel 20 umfaßt, der auf einer Verstellspindel 21 angeordnet ist. Die Verstellspindel 21 kann motorisch oder von Hand gedreht werden. Wird beispielsweise die Verstellspindel 21 in Uhrzeigerrichtung zur Stellung 21' gedreht, so nehmen die Stellhebel 12 bis 15 und die Zugstangen 16 bis 19 die gestrichelt dargestellte Lage 12', 13', 14', 15', 18', 19' ein, so daß auch eine entsprechende Verdrehung der Exzenterbüchsen 8 bis 11 erfolgt.In each printing unit side wall 1 of the printing units shown according to FIGS. 1 to 3 for a web-fed rotary offset machine, bores A, B are provided for the two middle cylinders 3, 4 for mounting the cylinders 3, 4. In these, the cylinder pins 6, 7 of the blanket cylinders 3, 4 are each in two eccentric bushes, namely an eccentrically drilled outer sleeve 8 and an eccentrically drilled inner sleeve 9 for the cylinder pin 6 and an eccentrically drilled outer sleeve 10 and an eccentrically drilled inner sleeve 11 for the cylinder pin 7 , positioned. Each of the eccentric bushes 8 to 11 is assigned an adjusting lever 12, 13, 14, 15. The adjusting levers 12, 14 for the inner eccentric bushes 9, 11 are connected to a pull rod 17 and the adjusting levers 13, 15 for the outer eccentric bushes 8, 10 are connected to a pull rod 16. Furthermore, an adjusting device 20, 21 is connected to a pair of eccentric bushes, for example the lower one, by means of which the eccentric bushes 10, 11 can be rotated via tie rods 18, 19. The movement of the tie rods 18, 19 and thus the rotation the eccentric bushes 10, 11 takes place with the aid of an adjusting device 20, 21 which comprises a pivoting lever 20 which is arranged on an adjusting spindle 21. The adjusting spindle 21 can be rotated by motor or by hand. If, for example, the adjusting spindle 21 is rotated clockwise to position 21 ', the adjusting levers 12 to 15 and the tie rods 16 to 19 assume the position 12', 13 ', 14', 15 ', 18', 19 'shown in dashed lines, so that a corresponding rotation of the eccentric bushes 8 to 11 takes place.

Die Stellhebel 12 bis 15 und die Zugstangen 16 bis 19 sind so dimensioniert, daß alle Exzenterbüchsen 8 bis 11 beim Drehen der Verstellspindel 21 um das gleiche Maß, also um die gleichen Winkelgrade, gedreht werden. Dadurch ist sichergestellt, daß beim An- und Abstellen die innere Exzenterbüchse 9 um den gleichen Winkelbetrag, jedoch in entgegengesetzter Richtung, wie die äußere Exzenterbüchse 8 gedreht wird. Das gleiche gilt für die innere Exzenterbüchse 11 und die äußere Exzenterbüchse 10. Die Zugstangen 18, 19 könnten aber auch direkt auf die Zugstangen 16, 17 einwirken.The adjusting levers 12 to 15 and the tie rods 16 to 19 are dimensioned such that all eccentric bushes 8 to 11 are rotated by the same amount, that is to say by the same degree of angle, when the adjusting spindle 21 is rotated. This ensures that the inner eccentric bushing 9 is turned by the same angular amount, but in the opposite direction as the outer eccentric bushing 8, when starting and stopping. The same applies to the inner eccentric bushing 11 and the outer eccentric bushing 10. The pull rods 18, 19 could also act directly on the pull rods 16, 17.

Durch die vorbeschriebene Ausbildung der Stellhebel 12 bis 15 und der Zugstangen 16 bis 19 wird bei der Schaltvorrichtung gemäß Fig. 1 erreicht, daß durch eine einzige Stellvorrichtung 20, 21 bei feststehenden äußeren Zylindern 2, 5 die inneren Zylinder 3, 4 gleichzeitig aber in entgegengesetzter Richtung P bzw. P' von der gemeinsamen Geraden G geradlinig unter 90° zu dieser wegbewegt oder auf diese zubewegt werden können. Dadurch ergibt sich die Möglichkeit, die inneren Zylinder 3, 4 voneinander und von den Zylindern 2, 5 zu trennen, indem der obere innere Zylinder 3 nach links und der untere Zylinder 4 nach rechts bewegt werden. Bei dieser Bewegung trennen sie sich auch von dem jeweiligen äußeren Zylinder 2 bzw. 5. Bei der entgegengesetzten Bewegung erfolgt die Einstellung der inneren Zylinder 3, 4, d.h. sie werden jeweils in Richtung P auf die Gerade G zubewegt, bis sie gegenseitig Kontakt bekommen und auch die äußeren Zylinder 2 bzw. 5 berühren. Bei den Schaltvorrichtungen gemäß Fig. 2 und 3 hingegen werden die inneren Zylinder 3, 4 jeweils in Richtung P bzw. P' von der gemeinsamen Geraden G geradlinig leicht auseinanderlaufend von dieser nach rechts (Fig. 2) oder links (Fig. 3) weg- oder wieder zurück auf diese bewegt. Dadurch werden diese Zylinder 3, 4 ebenfalls voneinander und von den äußeren Zylindern 2, 5 getrennt. Die Schaltvorrichtungen gemäß Fig. 1 bis 3 sind identisch aufgebaut, lediglich die Exzenterbüchsen nehmen unterschiedliche Positionen ein, die im einzelnen um 180° jeweils differieren.By the above-described design of the control levers 12 to 15 and the tie rods 16 to 19 is achieved in the switching device according to FIG. 1 that by a single actuator 20, 21 with fixed outer cylinders 2, 5, the inner cylinders 3, 4 at the same time in opposite directions Direction P or P 'can be moved from the common straight line G in a straight line at 90 ° to it or can be moved toward it. This results in the possibility of separating the inner cylinders 3, 4 from one another and from the cylinders 2, 5 by moving the upper inner cylinder 3 to the left and the lower cylinder 4 to the right. During this movement, they also separate from the respective outer cylinder 2 or 5. With the opposite movement, the adjustment of the inner cylinder 3, 4 takes place, i.e. they are each moved in the direction P towards the straight line G until they come into contact with one another and also touch the outer cylinders 2 and 5. In contrast, in the switching devices according to FIGS. 2 and 3, the inner cylinders 3, 4 are each slightly diverging in a straight line from the common straight line G in the direction P or P 'from this to the right (FIG. 2) or left (FIG. 3) - or moved back to this. As a result, these cylinders 3, 4 are also separated from one another and from the outer cylinders 2, 5. 1 to 3 are constructed identically, only the eccentric bushes occupy different positions, each of which differs by 180 °.

Es ist zwar nicht unbedingt erforderlich, jedoch kann es zweckmäßig sein, die äußeren Zylinder 2, 5 exzentrisch zu lagern. Dadurch kann auch individuell die Anstellkraft zwischen dem äußeren Zylinder, beispielsweise 2, und dem zugeordneten inneren Zylinder, beispielsweise 3, auf das gewünschte Maß bzw. auf den gewünschten Anpreßdruck eingestellt werden.Although it is not absolutely necessary, it may be expedient to mount the outer cylinders 2, 5 eccentrically. As a result, the contact force between the outer cylinder, for example 2, and the associated inner cylinder, for example 3, can also be set individually to the desired dimension or to the desired contact pressure.

Die Bezugszeichen 22, 23 geben die Mitte der Zylinder 3, 4 in abgestelltem Zustand und die Bezugszeichen 24, 25 die Mitte der Zylinder in angestelltem Zustand an. Gleichzeitig deuten die Bezugszeichen 24, 25 die Mitte der Bohrung und die Mitte der inneren Exzenterbüchsen 9, 11 an. Die Bezugszeichen 26, 27 sowie 26', 27' und 26", 27" hingegen beziehen sich auf die Mitte der Bohrungen der äußeren Exzenterbüchsen 8, 10.The reference numerals 22, 23 indicate the center of the cylinders 3, 4 in the switched-off state and the reference symbols 24, 25 indicate the center of the cylinders in the switched-on state. At the same time, the reference numerals 24, 25 indicate the center of the bore and the center of the inner eccentric bushes 9, 11. The reference numerals 26, 27 and 26 ', 27' and 26 ", 27", on the other hand, refer to the center of the bores of the outer eccentric bushes 8, 10.

Insgesamt lassen die Bezugszeichen 22, 27 gemäß Fig. 1 erkennen, daß die erwähnten Mittelpunkte des oberen inneren Zylinders 3 stets auf der linken Seite der gemeinsamen Geraden G und . die erwähnten Mittelpunkte des unteren inneren Zylinders 4 auf der rechten Seite der gemeinsamen Geraden G zu liegen kommen. Bei den Schaltvorrichtungen gemäß Fig. 2 und 3 liegen die Bezugszeichen 22, 27' bzw. 22, 27" und somit die Mittelpunkte der Zylinder 3 und 4 entweder auf der rechten Seite (Fig. 2) oder auf der linken Seite (Fig. 3) der Geraden G. Dadurch ist bei einer Bewegung der inneren Zylinder 3, 4 in Richtung der Pfeile P (Anstellbewegung) gewährleistet, daß die Zylinder 3, 4 mit der erforderlichen Kraft gegeneinander angestellt werden können. Vorzugsweise sollten im angestellten Zustand die Zylindermittelpunkte 24, 25 möglichst nahe an der gemeinsamen Geraden G liegen.Overall, the reference numerals 22, 27 shown in FIG. 1 indicate that the mentioned centers of the upper inner cylinder 3 are always on the left side of the common straight line G and. the mentioned centers of the lower inner cylinder 4 come to lie on the right side of the common straight line G. 2 and 3, the reference numerals 22, 27 'and 22, 27 "and thus the center points of the cylinders 3 and 4 are either on the right side (FIG. 2) or on the left side (FIG. 3 ) of the straight line G. This ensures that when the inner cylinders 3, 4 move in the direction of the arrows P (positioning movement), the cylinders 3, 4 can be set against one another with the required force. 25 are as close as possible to the common line G.

Bei Fig. 2, 3 ist es vorteilhaft, die äußeren Zylinder 2, jeweils geringfügig, bezogen auf die Gerade G, seitlich (Fig. 2 nach links, Fig. 3 nach rechts) zu versetzen. Dadurch werden die Herausbewegung der inneren Zylinder 3, 4 nach rechts (Fig. 2) bzw. nach links (Fig. 3) und der jeweilige Anstellvorgang erleichtert.In FIGS. 2, 3 it is advantageous to move the outer cylinders 2 laterally (in each case slightly with respect to the straight line G) (FIG. 2 to the left, FIG. 3 to the right). This facilitates the outward movement of the inner cylinders 3, 4 to the right (FIG. 2) or to the left (FIG. 3) and the respective adjustment process.

Die Größe der Anstellkraft zwischen den inneren Zylindern 3, 4 und zwischen diesen und den jeweiligen äußeren Zylindern 2, 5 wird durch in den Zugstangen 16, 17, 18 und 19 befindliche, Links- und Rechtsgewinde aufweisende Gewindebüchsen 28 bestimmt, durch die die Zugstangen 16, 17, 18, 19 verlängert oder verkürzt werden können.The magnitude of the contact force between the inner cylinders 3, 4 and between these and the respective outer cylinders 2, 5 is determined by threaded bushings 28, which are located in the tie rods 16, 17, 18 and 19 and have threaded bushes 28 through which the tie rods 16 , 17, 18, 19 can be extended or shortened.

Claims (5)

1. Switching device for rubber blanket cylinders (3, 4) of a printing unit for a web-fed rotary offset printing machine, in which there are arranged, substantially on a straight line (G) inclined with respect to an approximately horizontally extending print carrier web (T), four printing unit cylinders (2, 3, 4, 5) one above the other, wherein the print carrier web (T) can be guided between the two inner printing unit cylinders formed as rubber blanket cylinders (3, 4), characterised in that by means of eccenctric adjustment means (8, 9; 10, 11) the printing unit cylinders (3, 4) can be moved apart, in that the cylinder journals (6, 7) of the rubber blanket cylinders (3, 4) are arranged respectively in two eccentric bushings (8, 9; 10, 11) arranged one inside the other and positioned in bores (A, B) in the printing unit side wall (1), in that the eccentric bushings (8, 9; 10, 11) have the same eccentricity, in that each outer eccentric bushing (8, 10) is joined to a common pull rod (16) and each inner eccentric bushing (9, 11) is joined to a common pull rod (17) respectively, in that via two further pull rods (18, 19) joined in one inner and one outer eccentric bushing (10, 11) all the eccentric bushings (8, 9; 10, 11) can be rotated by the same angular amount in the bores (A, B) by means of an adjustment device (20, 21 so that the rubber blanket cylinders (3, 4) move in a straight line at 90° in opposite directions (P, P'), with respect to the straight line (G), the axis centres (24, 25) of the cylinder journals (6, 7) lying on different sides of the straight line (G) and, in the set rubber blanket cylinder position, have as small a spacing as possible from the straight line (G).
2. Switching device for rubber blanket cylinders (3, 4) of a printing unit for a web-fed rotary offset printing machine, in which there are arranged, substantially on a straight line (G) inclined with respect to an approximately horizontally extending print carrier web (T), four printing unit cylinders (2, 3, 4, 5) one above the other, wherein the print carrier web (T) can be guided between the two inner printing unit cylinders formed as rubber blanket cylinders (3, 4), characterised in that by means of eccentric adjustment means (8, 9; 10, 11) the printing unit cylinders (3, 4) can be moved apart, in that the cylinder journals (6, 7) of the rubber blanket cylinders (3, 4) are arranged respectively in two eccentric bushings (8, 9; 10, 11) arranged one inside the other and positioned in bores (A, B) in the printing unit side wall (1), in that the eccentric bushings (8, 9; 10, 11) have the same eccentricity, in that each outer eccentric bushing (8,10) is joined to a common pull rod (16) and each inner eccentric bushing (9, 11) is joined to a common pull rod (17) respectively, in that via two further pull rods (18, 19) joined in one inner and one outer eccentric bushing (10, 11) all the eccentric bushings (8, 9; 10, 11) can be rotated by the same angular amount in the bores (A, B) by means of an adjustment device (20, 21), so that the rubber blanket cylinders (3, 4) move away slightly from each other respectively in the same direction (P, P') from the straight line (G), in a straight line, and the axis centres (24, 25) of the cylinder journals (6, 7) lie on the same sides of the straight line (G) and, in the set rubber blanket cylinder position, have as small a spacing as possible from the straight line (G).
3. Switching device according to claim 1, characterised in that the adjustment device (20, 21) has an adjustment spindle (20) on which is arranged a rocking lever (21) connected to the rods (18, 19).
4. Switching device according to claim 1 or 2, characterised in that the pull rods (16, 17) are joined respectively at their ends to an adjustement lever (12, 13; 14, 15) arranged on one of the eccentric bushings (8, 9; 10, 11).
5. Switching device according to one of the preceding claims, characterised in that the pull rods (16, 17; 18, 19) are equipped with a threaded bushing (28) having a left/right-hand thread for the individual adjustment of their length.
EP85103932A 1984-04-05 1985-04-02 Tripping device for the blanket cylinders of a printing unit in reel-fed offset printing machines Expired - Lifetime EP0158259B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3412812A DE3412812C1 (en) 1984-04-05 1984-04-05 Switching device for the blanket cylinders of a printing unit for a web-fed offset printing machine
DE3412812 1984-04-05

Publications (3)

Publication Number Publication Date
EP0158259A2 EP0158259A2 (en) 1985-10-16
EP0158259A3 EP0158259A3 (en) 1987-08-26
EP0158259B1 true EP0158259B1 (en) 1990-01-10

Family

ID=6232750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103932A Expired - Lifetime EP0158259B1 (en) 1984-04-05 1985-04-02 Tripping device for the blanket cylinders of a printing unit in reel-fed offset printing machines

Country Status (4)

Country Link
US (1) US4598640A (en)
EP (1) EP0158259B1 (en)
JP (1) JPH0780289B2 (en)
DE (2) DE3412812C1 (en)

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DD260893A1 (en) * 1987-06-22 1988-10-12 Polygraph Leipzig ADJUSTMENT AND STOPPING DEVICE FOR THE RUBBER CYLINDER OF A FOUR CYLINDER PRESSURE PUSH FOR A ROLL ROTATION OFFSET PRINTING MACHINE
DE3926087C1 (en) * 1989-08-07 1990-10-04 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE3926088C1 (en) * 1989-08-07 1990-10-31 Heidelberger Druckmasch Ag Rotary printing machine with device for the supply and removal of the coating / blanket cylinder to the printing cylinder and / or metering / plate cylinder
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US5265529A (en) * 1992-06-09 1993-11-30 A. B. Dick Company Single piston impression cylinder throw-off
US5337664A (en) * 1993-04-08 1994-08-16 Rockwell International Corporation Printing press with blanket cylinder throw off apparatus and method
DE4415711A1 (en) * 1994-05-04 1995-11-09 Roland Man Druckmasch Printing unit for rubber-rubber printing
DE19515692A1 (en) * 1995-04-28 1996-10-31 Heidelberger Druckmasch Ag Adjusting device for a blanket cylinder
DE19516131A1 (en) * 1995-05-03 1996-11-07 Roland Man Druckmasch Device for storing an application roller
DE19625787A1 (en) * 1995-08-30 1997-03-06 Heidelberger Druckmasch Ag Device for setting perforating devices
US5868071A (en) * 1997-09-02 1999-02-09 Goss Graphic Systems, Inc. Variable cutoff printing press
DE19753820A1 (en) * 1997-12-04 1999-06-10 Roland Man Druckmasch Device for the mutual adjustment of printing unit cylinders
DE19856906A1 (en) * 1998-12-10 2000-06-15 Roland Man Druckmasch Double printing mechanism for rotary printing press, with transfer cylinders printing web on both sides in rubber-rubber principle adjustable relative to each other
JP4611493B2 (en) * 2000-06-23 2011-01-12 株式会社小森コーポレーション Rotary printing press cylinder
CN100519183C (en) 2001-04-09 2009-07-29 柯尼格及包尔公开股份有限公司 Printing unit of a printing machine
WO2002081216A2 (en) 2001-04-09 2002-10-17 Koenig & Bauer Aktiengesellschaft Printing couple in a printing machine with a pivotal transfer cylinder
WO2003016057A1 (en) 2001-08-03 2003-02-27 Koenig & Bauer Aktiengesellschaft Printing groups of a printing press
CN1781703A (en) 2001-08-03 2006-06-07 柯尼格及包尔公开股份有限公司 Printing device in printing machine
EP1492673A1 (en) * 2002-04-06 2005-01-05 Koenig & Bauer Aktiengesellschaft Printing units
US20040231535A1 (en) * 2002-07-03 2004-11-25 Gerner Erich Max Karl Printing groups of a printing press
DE102004037889B4 (en) * 2004-04-05 2006-05-11 Koenig & Bauer Ag Device for supporting a cylinder and printing unit with at least three together as a printing unit acting cylinders
DE102004037888B4 (en) * 2004-04-05 2008-09-04 Koenig & Bauer Aktiengesellschaft Printing units of a web-fed rotary printing press
EP1900521A1 (en) * 2004-04-05 2008-03-19 Koenig & Bauer Aktiengesellschaft Printing unit on a web-fed rotary printing press
BRPI0609937A2 (en) * 2005-04-21 2010-05-11 Koenig & Bauer Ag printing mechanism with at least two cooperating cylinders
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Also Published As

Publication number Publication date
DE3412812C1 (en) 1985-06-27
US4598640A (en) 1986-07-08
DE3575278D1 (en) 1990-02-15
JPS618354A (en) 1986-01-16
EP0158259A2 (en) 1985-10-16
JPH0780289B2 (en) 1995-08-30
EP0158259A3 (en) 1987-08-26

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