EP0311924B1 - Rotary sheet-fed machine reversible from first impression to perfecting - Google Patents

Rotary sheet-fed machine reversible from first impression to perfecting Download PDF

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Publication number
EP0311924B1
EP0311924B1 EP88116634A EP88116634A EP0311924B1 EP 0311924 B1 EP0311924 B1 EP 0311924B1 EP 88116634 A EP88116634 A EP 88116634A EP 88116634 A EP88116634 A EP 88116634A EP 0311924 B1 EP0311924 B1 EP 0311924B1
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EP
European Patent Office
Prior art keywords
sheet
drum
gripping
printing
turning
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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.)
Expired - Lifetime
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EP88116634A
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German (de)
French (fr)
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EP0311924A3 (en
EP0311924A2 (en
Inventor
Erich Georg Wieland
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication of EP0311924A3 publication Critical patent/EP0311924A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine
    • B41F21/108—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine with pneumatic means

Definitions

  • the invention relates to a sheet-fed rotary printing press which can be switched from straight printing to face and reverse printing, and vice versa, according to the preamble of the claim.
  • a generic sheet-fed rotary printing press is known from DE-PS 35 34 486, the coupling of the two gears consisting of a shrink connection which can be temporarily released by a so-called pressure oil assembly for the purpose of changing the angular position of the gears by applying pressure oil.
  • the two devices for detecting the leading and trailing sheet edges can be adjusted in a simple manner when changing from perfect to perfect and reverse printing. Although the adjustments can only be made by loosening the coupling connection between the two gears, the adjustment work in the known sheet-fed rotary printing press is still difficult because the respective correct angular positions for the face printing and for different sheet lengths for face and back printing have to be found.
  • the two gears meshing with the gear of the transfer drum and the gear of the turning drum are on the grippers for the leading edges of the sheets supporting hollow shaft arranged and connectable to each other in different angular positions by means of an index bolt and clamping screws, whereby a control shaft freely rotatably mounted in the hollow shaft and carrying the suction pads is connected to the hollow shaft gearwheels by a gear consisting of levers and linkages in such a way that the control shaft with the Suction cups perform an oscillating movement relative to the hollow shaft.
  • stops are provided for the linkage executing the oscillating movement, which fix its rest position.
  • these stops do not allow the basic setting to be found again quickly after an adjustment, since after a format change, both for straight printing as well as for face and reverse printing, the new formats are found on the basis of pointer and scale settings and, in addition, the two hollow shaft gears are relatively relative must be adjusted to each other so that the printing units in front of the sheet transfer drum and the wheel trains lying behind them are set in the correct phase to the changed format.
  • the object of the invention is therefore to provide a sheet-fed rotary printing machine according to the preamble of the claim, which can be adjusted in a simple manner from face to face and reverse and vice versa and also to different format lengths of the sheets.
  • the fine pressure position can be set in a simple manner without laborious setup and measurement work by releasing the coupling and moving the stops together and then coupling the gears together again. Since the fine print position is determined by the stops, this can always be easily found again after the devices for detecting the leading and trailing edges of the sheet transfer drum have been adjusted.
  • the changeover is even easier because only the gripper system of the turning drum can be activated in such a way that its turning gripper grips the trailing edges of the sheet.
  • the position of the gripping devices for the leading and trailing sheet edges corresponds to the greatest format length of the sheets to be printed when changing from straight printing operation to face and back printing operations. If sheets with smaller format lengths are to be printed, the coupling coupling the gearwheels must be released and the gripping devices for gripping the front and rear sheet edges must be adjusted to the new format by relative rotation of the parts of the sheet transfer drum which carry these.
  • the format Since the corresponding parts of the sheet transfer drum are engaged by their gears with the gear trains leading to the upstream and downstream printing units, the format is automatically aligned in phase with the printing units, so that the register does not have to be reset. If the format of the paper to be printed is to be changed in a gentle and reverse printing operation, it is only necessary to release the coupling and to turn the gears relative to one another in such a way that the arc path between the devices for detecting the leading and trailing edges of the new paper format corresponds.
  • the rotational angle position of the two drum parts carrying the devices for detecting the front and rear sheet edges is such that the gripper device of the supply drum with the gripper device of the sheet transfer drum and the gripper system of the subsequent turning drum for each phase position of the printing units Detection of the trailing edge of the sheet corresponds with the format-adjustable holding device on the sheet transfer drum, which can consist, for example, of a series of suction cups, so that no additional adjustment processes are necessary and no collision points arise.
  • the fine print position can be adjusted in a simple manner by moving the stops together, so that they can be quickly and repeatably adjusted again after a perfecting operation.
  • the number of wheel pulls is not increased in the sheet-fed rotary printing press according to the invention, so that no additional games that could impair the printing accuracy have to be accepted.
  • the invention also takes into account the fact that due to the reversible gripper of the gripper system of the reversing drum, the trailing edge of each sheet undergoes a shift during the turning which is greater than 0 and smaller than the drum circumference minus the largest printable paper format.
  • the corresponding design of the turning drum is known.
  • the two gears of the sheet transfer or storage drum can be coupled with the coupling known from DE-OS 35 34 486 or with any other coupling that allows easy loosening and coupling in different relative angular positions.
  • the sheet transfer or storage drum shown in FIG. 1 consists of a drum base body 2, which is mounted in the machine frame 5 in the usual way via hollow shaft journals 3, 4 connected to it.
  • the drum base body is provided in a known and therefore not described in detail with a series of grippers 6, which serve to grip the front edges of the sheets 26 fed by the transfer drum 7.
  • a shaft 8 is freely rotatably mounted in the hollow shaft journal 3, 4 of the drum base body 2. On this shaft 8 sections or in the form of segments holding parts 9 are attached, which are provided along a surface line of the sheet transfer drum 1 with suction nozzles 10 for detecting the trailing edges of the sheet. Suction air is supplied to these suction nozzles in a known manner via the shaft designed as a hollow shaft 8 through a suction air rotary leadthrough.
  • gears 13, 14 are wedged parallel to one another with the same diameter, the same number of teeth and the same pitch or fastened in some other way.
  • the gears 13, 14 are connected to one another by a releasable coupling 22.
  • This releasable coupling 22 can be, for example, of the type described in DE-OS 35 34 486.
  • the transfer drum 7 feeding the sheets 26 and the turning drum 15 are set in the manner shown on the sheet transfer drum 1.
  • the transfer drum 7 is provided with grippers 16 and feeds the sheets from the first printing unit 17 to the sheet transfer drum 1.
  • the turning drum 15 is provided with a gripper system 18 and feeds the sheets to the second printing unit 19.
  • the grippers 20, 21 of the gripper system 18 grip the sheets 26 on the sheet transfer drum 1 at their front or rear edges.
  • the gear 7.1 of the transfer drum 7 meshes with the gear 13 fastened on the hollow shaft 4 of the drum base body 2, while the gear 15.1 of the turning drum is in engagement with the gear 14 which is fastened on the shaft 8.
  • Sheet transfer drum stops 23, 24 are provided which lie against each other when the sheet transfer drum 1 is set to face printing. These stops thus secure the fine printing position, in which the grippers 20 of the gripper system 18 of the turning drum 15 correspond to the grippers 6 of the sheet transfer drum 1. If the printing press is to be reset from face and back printing to face printing, only the stops need to be moved against each other, with a tolerance of 0.05 mm in relation to the radian dimension of the drum jacket surface should be maintained in the stop position.
  • the arc path formed in the basic position (face printing)? results from the point of intersection of the gripper support of the device 21 for grasping the trailing edge of the sheet on the turning drum 15 with the straight line through the centers of rotation of the turning drum 15 and the sheet transfer drum 1 and the gripper support of the device 6 closest to the circumference of the sheet transfer drum 1 for detecting the leading edge of the sheet.

Description

Die Erfindung betrifft eine Bogenrotationsdruckmaschine, die von Schöndruck auf Schön- und Widerdruck und umgekehrt umstellbar ist, nach dem Oberbegriff des Patentanspruches.The invention relates to a sheet-fed rotary printing press which can be switched from straight printing to face and reverse printing, and vice versa, according to the preamble of the claim.

Eine gattungsgemäße Bogenrotationsdruckmaschine ist aus der DE-PS 35 34 486 bekannt, wobei die Kupplung der beiden Zahnräder aus einer Schrumpf-Verbindung besteht, die durch einen sogenannten Druckölverband zum Zwecke der Veränderung der Winkellage der Zahnräder durch Beaufschlagung mit Drucköl vorübergehend lösbar ist. Bei dieser bekannten Bogenrotationsdruckmaschine lassen sich die beiden Einrichtungen zum Erfassen der Bogenvorderkanten und Bogenhinterkanten bei Umstellung von Schön- auf Schön-und Widerdruck und umgekehrt in einfacher Weise verstellen. Obwohl sich die Verstellungen nur durch Lösen der Kupplungsverbindung zwischen den beiden Zahnrädern vornehmen lassen, bereitet die Einstellarbeit bei der bekannten Bogenrotationsdruckmaschine noch Schwierigkeiten, weil die jeweiligen richtigen Winkelstellungen für den Schöndruck und für unterschiedliche Bogenlängen bei Schön- und Widerdruck aufgefunden werden müssen.A generic sheet-fed rotary printing press is known from DE-PS 35 34 486, the coupling of the two gears consisting of a shrink connection which can be temporarily released by a so-called pressure oil assembly for the purpose of changing the angular position of the gears by applying pressure oil. In this known sheet-fed rotary printing press, the two devices for detecting the leading and trailing sheet edges can be adjusted in a simple manner when changing from perfect to perfect and reverse printing. Although the adjustments can only be made by loosening the coupling connection between the two gears, the adjustment work in the known sheet-fed rotary printing press is still difficult because the respective correct angular positions for the face printing and for different sheet lengths for face and back printing have to be found.

Bei einer aus der DE-AS 25 59 735 bekannten Bogenrotationsdruckmaschine, die von Schöndruck auf Schön- und Widerdruck und umgekehrt umstellbar ist, sind die beiden mit dem Zahnrad der Übergabetrommel und dem Zahnrad der Wendetrommel kämmenden Zahnräder auf der die Greifer für die Vorderkanten der Bogen tragenden Hohlwelle angeordnet und in unterschiedlichen Winkelstellungen miteinander durch einen Indexbolzen und Klemmschrauben verbindbar, wobei eine in der Hohlwelle frei drehbar gelagerte und die Sauggreifer tragende Steuerwelle mit den Hohlwellenzahnrädern durch ein aus Hebeln und Gestängen bestehendes Getriebe in der Weise verbunden ist, daß die Steuerwelle mit den Sauggreifern relativ zu der Hohlwelle eine oszillierende Bewegung ausführt. Bei dieser bekannten Bogenrotationsdruckmaschine sind zwar Anschläge für das die oszillierende Bewegung ausführende Gestänge vorgesehen, die dessen Ruhestellung festlegen. Diese Anschläge gestatten es aber nicht, die Grundeinstellung schnell nach einer Verstellung wieder aufzufinden, da nach einer Formatänderung sowohl bei Schöndruck als auch bei Schön- und Widerdruck die neuen Formate aufgrund von Zeiger- und Skaleneinstellungen aufgefunden und zusätzlich auch die beiden Hohlwellenzahnräder in einer Weise relativ zueinander verstellt werden müssen, daß die vor der Bogenübergabetrommel und die nach dieser liegenden Räderzüge der Druckwerke phasenrichtig auf das geänderte Format eingestellt sind.In a sheet-fed rotary printing press known from DE-AS 25 59 735, which can be switched from face printing to face and reverse printing, and vice versa, the two gears meshing with the gear of the transfer drum and the gear of the turning drum are on the grippers for the leading edges of the sheets supporting hollow shaft arranged and connectable to each other in different angular positions by means of an index bolt and clamping screws, whereby a control shaft freely rotatably mounted in the hollow shaft and carrying the suction pads is connected to the hollow shaft gearwheels by a gear consisting of levers and linkages in such a way that the control shaft with the Suction cups perform an oscillating movement relative to the hollow shaft. In this known sheet-fed rotary printing press, stops are provided for the linkage executing the oscillating movement, which fix its rest position. However, these stops do not allow the basic setting to be found again quickly after an adjustment, since after a format change, both for straight printing as well as for face and reverse printing, the new formats are found on the basis of pointer and scale settings and, in addition, the two hollow shaft gears are relatively relative must be adjusted to each other so that the printing units in front of the sheet transfer drum and the wheel trains lying behind them are set in the correct phase to the changed format.

Aufgabe der Erfindung ist es daher, eine Bogenrotationsdruckmaschine nach dem Oberbegriff des Patentanspruches zu schaffen, die sich in einfacher Weise von Schön- auf Schön- und Widerdruck und umgekehrt und auch auf unterschiedliche Formatlängen der Bögen einstellen läßt.The object of the invention is therefore to provide a sheet-fed rotary printing machine according to the preamble of the claim, which can be adjusted in a simple manner from face to face and reverse and vice versa and also to different format lengths of the sheets.

Diese Aufgabe wird durch die Merkmale des Patentanspruches gelöst.This object is achieved by the features of the patent claim.

Die Schöndruckstellung läßt sich in einfacher Weise ohne umständliche Einricht- und Meßarbeiten dadurch einstellen, daß die Kupplung gelöst und die Anschläge zusammengefahren werden und anschließend die Zahnräder wieder miteinander gekuppelt werden. Da die Schöndruckstellung durch die Anschläge festgelegt ist, läßt sich diese nach einer Verstellung der Einrichtungen zum Erfassen der Bogenvorder- und Bogenhinterkanten der Bogenübergabetrommel immer leicht wieder auffinden.The fine pressure position can be set in a simple manner without laborious setup and measurement work by releasing the coupling and moving the stops together and then coupling the gears together again. Since the fine print position is determined by the stops, this can always be easily found again after the devices for detecting the leading and trailing edges of the sheet transfer drum have been adjusted.

Soll von Schöndruck auf Schön- und Widerdruck übergegangen werden, ist die Umstellung noch einfacher, weil lediglich das Greifersystem der Wendetrommel derart zu aktivieren ist, daß dessen Wendegreifer die Bogenhinterkanten erfassen. Bei der erfindungsgemäßen Bogenrotationsdruckmaschine entspricht die Stellung der Greifeinrichtungen für die Bogenvorder- und Bogenhinterkanten bei Umstellung von Schöndruckbetrieb auf Schön- und Widerdruckbetrieb der größten Formatlänge der zu bedruckenden Bogen. Sollen Bogen mit kleineren Formatlängen bedruckt werden, muß die die Zahnräder miteinander kuppelnde Kupplung gelöst und die Greifeinrichtungen zum Erfassen der Bogenvorder- und Bogenhinterkanten müssen durch relatives Verdrehen der diese tragenden Teile der Bogenübergabetrommel auf das neue Format eingestellt werden. Da die entsprechenden Teile der Bogenübergabetrommel durch ihre Zahnräder mit den zu den vorgeschalteten und nachgeschalteten Druckwerken führenden Zahnräderzügen in Eingriff sind, erfolgt bei einer Formatumstellung automatisch eine phasenrichtige Ausrichtung auf die Druckwerke, so daß das Register nicht neu eingestellt werden muß. Soll bei einem Schon- und Widerdruckbetrieb eine Formatumstellung des zu bedruckenden Papiers erfolgen, ist es lediglich erforderlich, die Kupplung zu lösen und die Zahnräder in der Weise relativ zueinander zu verdrehen, daß die Bogenstrecke zwischen den Einrichtungen zum Erfassen der Bogenvorderkanten und Bogenhinterkanten dem neuen Papierformat entspricht. Da die jeweiligen Zahnräder des Trommelgrundkörpers und der in diesem gelagerten Welle, die Halteteile mit Einrichtungen zum Erfassen der Bogehinterkanten trägt, einerseits mit dem Zahnrad der Umführtrommel und andererseits mit dem Zahnrad der Wendetrommel kämmen, sind diese immer phasenrichtig an die beiden Druckwerke angekuppelt. In jeder Drehwinkelstellung der beiden Teile der Bogenübergabetrommel stimmt somit die Phasenlage der Einrichtungen zum Erfassen der Bogenvorderkanten und zum Erfassen der Bogenhinterkanten mit dem vorgeschalteten und nachgeschalteten Druckwerk überein, so daß keine zusätzlichen umständlichen Einstellvorgänge erforderlich sind, um die richtige Phasenlage der Greifeinrichtungen zu den zugehörigen Druckwerken bzw. den zu diesen führenden Räderzügen herzustellen. Bei der erfindungsgemäßen Bogenrotationsdruckmaschine ist somit gewährleistet, daß die Drehwinkelstellung der beiden die Einrichtungen zum Erfassen der Bogenvorder- und Bogenhinterkanten tragenden Trommelteile derart ist, daß in jeder Phasenlage der Druckwerke die Greifereinrichtung der zuführenden Trommel mit der Greifereinrichtung der Bogenübergabetrommel und das Greifersystem der nachfolgenden Wendetrommel zum Erfassen der Bogenhinterkante mit der formateinstellbaren Halteeinrichtung auf der Bogenübergabetrommel, die beispielsweise aus einer Reihe von Saugern bestehen kann, korrespondiert, so daß keine zusätzlichen Stellvorgänge notwendig sind und keine Kollisionsstellen entstehen. Die Schöndruckstellung ist in einfacher Weise durch Zusammenfahren der Anschläge einstellbar, so daß diese schnell und mit hoher Genauigkeit wiederholbar nach einem Schön- und Widerdruckbetrieb wieder eingestellt werden kann. Die Anzahl der Räderzüge ist bei der erfindungsgemäßen Bogenrotationsdruckmaschine nicht erhöht, so daß keine zusätzlichen Spiele, die die Druckgenauigkeit beeinträchtigen könnten, in Kauf genommen werden müssen.If you want to switch from face printing to face and back printing, the changeover is even easier because only the gripper system of the turning drum can be activated in such a way that its turning gripper grips the trailing edges of the sheet. In the sheet-fed rotary printing press according to the invention, the position of the gripping devices for the leading and trailing sheet edges corresponds to the greatest format length of the sheets to be printed when changing from straight printing operation to face and back printing operations. If sheets with smaller format lengths are to be printed, the coupling coupling the gearwheels must be released and the gripping devices for gripping the front and rear sheet edges must be adjusted to the new format by relative rotation of the parts of the sheet transfer drum which carry these. Since the corresponding parts of the sheet transfer drum are engaged by their gears with the gear trains leading to the upstream and downstream printing units, the format is automatically aligned in phase with the printing units, so that the register does not have to be reset. If the format of the paper to be printed is to be changed in a gentle and reverse printing operation, it is only necessary to release the coupling and to turn the gears relative to one another in such a way that the arc path between the devices for detecting the leading and trailing edges of the new paper format corresponds. Since the respective gears of the drum base body and the shaft mounted in it, which holds the holding parts with devices for detecting the trailing edge of the edges, mesh on the one hand with the gear of the transfer drum and on the other hand with the gear of the reversing drum, these are always in phase with the two printing units coupled. In each rotational angle position of the two parts of the sheet transfer drum, the phase position of the devices for detecting the sheet leading edges and for detecting the sheet trailing edges coincides with the upstream and downstream printing unit, so that no additional cumbersome adjustment processes are required to ensure the correct phase position of the gripping devices in relation to the associated printing units or to produce the wheel trains leading to these. In the sheet-fed rotary printing press according to the invention, it is thus ensured that the rotational angle position of the two drum parts carrying the devices for detecting the front and rear sheet edges is such that the gripper device of the supply drum with the gripper device of the sheet transfer drum and the gripper system of the subsequent turning drum for each phase position of the printing units Detection of the trailing edge of the sheet corresponds with the format-adjustable holding device on the sheet transfer drum, which can consist, for example, of a series of suction cups, so that no additional adjustment processes are necessary and no collision points arise. The fine print position can be adjusted in a simple manner by moving the stops together, so that they can be quickly and repeatably adjusted again after a perfecting operation. The number of wheel pulls is not increased in the sheet-fed rotary printing press according to the invention, so that no additional games that could impair the printing accuracy have to be accepted.

Die Erfindung trägt auch dem Umstand Rechnung, daß aufgrund des Wendegreifers des Greifersystems der Wendetrommel die Bogenhinterkante jedes Bogens bei der Wendung eine Verlagerung erfährt, die größer als 0 und kleiner ist als der Trommelumfang abzüglich des größten verdruckbaren Papierformats. Die entsprechende konstruktive Ausgestaltung der Wendetrommel ist bekannt.The invention also takes into account the fact that due to the reversible gripper of the gripper system of the reversing drum, the trailing edge of each sheet undergoes a shift during the turning which is greater than 0 and smaller than the drum circumference minus the largest printable paper format. The corresponding design of the turning drum is known.

Die beiden Zahnräder der Bogenübergabe-oder Speichertrommel können mit der aus der DE-OS 35 34 486 bekannten Kupplung oder aber auch mit jeder anderen Kupplung gekuppelt werden, die ein einfaches Lösen und Ankuppeln in unterschiedlichen relativen Winkellagen gestattet.The two gears of the sheet transfer or storage drum can be coupled with the coupling known from DE-OS 35 34 486 or with any other coupling that allows easy loosening and coupling in different relative angular positions.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt

  • Fig.1 einen Längsschnitt durch eine Bogenübergabe- oder sogenannte Speichertrommel einer von Schöndruck auf Schön- und Widerdruck oder umgekehrt umstellbaren Bogenrotationsdruckmaschine in schematischer Darstellung und
  • Fig. 2 eine Seitenansicht der Bogenübergabetrommel nach Fig. 1 mit an diese angestellter Umführ- und Wendetrommel, wobei Bogenübergabe- und Wendetrommel in der Grundstellung (Schöndruckstellung) dargestellt sind, sowie den zugehörigen Druckwerken in schematischer Darstellung.
An embodiment of the invention is explained below with reference to the drawing. In this shows
  • 1 shows a longitudinal section through a sheet transfer or so-called storage drum of a sheet-fed rotary printing machine which can be converted from straight printing to perfecting or vice versa, and in a schematic illustration
  • Fig. 2 is a side view of the sheet transfer drum of FIG. 1 with the transfer and turning drum attached to it, the sheet transfer and turning drum being shown in the basic position (face-up printing position) and the associated printing units in a schematic representation.

Die in Fig.1 dargestellte Bogenübergabe- oder Speichertrommel besteht aus einem Trommelgrundkörper 2, der über mit diesem verbundene Hohlwellenzapfen 3,4 in üblicher Weise im Maschinengestell 5 gelagert ist. Der Trommelgrundkörper ist in bekannter und daher nicht näher beschriebener Weise mit einer Reihe von Greifern 6 versehen, die dem Ergreifen der Vorderkanten der von der Übergabetrommel 7 zugeführten Bögen 26 dienen.The sheet transfer or storage drum shown in FIG. 1 consists of a drum base body 2, which is mounted in the machine frame 5 in the usual way via hollow shaft journals 3, 4 connected to it. The drum base body is provided in a known and therefore not described in detail with a series of grippers 6, which serve to grip the front edges of the sheets 26 fed by the transfer drum 7.

In den Hohlwellenzapfen 3,4 des Trommelgrundkörpers 2 ist eine Welle 8 frei drehbar gelagert. Auf diese Welle 8 sind abschnittsweise oder in Form von Segmenten Halteteile 9 befestigt, die längs einer Mantellinie der Bogenübergabetrommel 1 mit Saugdüsen 10 zum Erfassen der Bogenhinterkanten versehen sind. Diesen Saugdüsen wird über die als Hohlwelle 8 ausgebildete Welle in bekannter Weise durch eine Saugluftdrehdurchführung Saugluft zugeführt.A shaft 8 is freely rotatably mounted in the hollow shaft journal 3, 4 of the drum base body 2. On this shaft 8 sections or in the form of segments holding parts 9 are attached, which are provided along a surface line of the sheet transfer drum 1 with suction nozzles 10 for detecting the trailing edges of the sheet. Suction air is supplied to these suction nozzles in a known manner via the shaft designed as a hollow shaft 8 through a suction air rotary leadthrough.

Auf die Hohlwelle 4 und das diese überragende Ende 11 der in dieser gelagerten Welle 8 sind Zahnräder 13,14 parallel zueinander mit gleichem Durchmesser, gleicher Zähnezahl und gleicher Teilung aufgekeilt oder in sonstiger Weise befestigt.On the hollow shaft 4 and the projecting end 11 of the shaft 8 mounted in it, gears 13, 14 are wedged parallel to one another with the same diameter, the same number of teeth and the same pitch or fastened in some other way.

Die Zahnräder 13,14 sind durch eine lösbare Kupplung 22 miteinander verbunden. Diese lösbare Kupplung 22 kann beispielsweise von der in der DE-OS 35 34 486 beschriebenen Art sein.The gears 13, 14 are connected to one another by a releasable coupling 22. This releasable coupling 22 can be, for example, of the type described in DE-OS 35 34 486.

Wie aus Fig.2 ersichtlich ist, sind an die Bogenübergabetrommel 1 die die Bogen 26 zuführende Umführtrommel 7 und die Wendetrommel 15 in der dargestellten Weise angestellt. Die Umführtrommel 7 ist mit Greifern 16 versehen und führt der Bogenübergabetrommel 1 die Bogen von dem ersten Druckwerk 17 zu.As can be seen from FIG. 2, the transfer drum 7 feeding the sheets 26 and the turning drum 15 are set in the manner shown on the sheet transfer drum 1. The transfer drum 7 is provided with grippers 16 and feeds the sheets from the first printing unit 17 to the sheet transfer drum 1.

Die Wendetrommel 15 ist mit einem Greifersystem 18 versehen und führt die Bogen dem zweiten Druckwerk 19 zu. Je nachdem, ob im Schöndruck oder Schön- und Widerdruckbetrieb gearbeitet wird, erfassen die Greifer 20,21 des Greifersystems 18 die Bogen 26 auf der Bogenübergabetrommel 1 an ihren Vorder- oder Hinterkanten.The turning drum 15 is provided with a gripper system 18 and feeds the sheets to the second printing unit 19. Depending on whether the printer is working in face-to-face printing or perfecting, the grippers 20, 21 of the gripper system 18 grip the sheets 26 on the sheet transfer drum 1 at their front or rear edges.

Das Zahnrad 7.1 der Umführtrommel 7 kämmt mit dem auf die Hohlwelle 4 des Trommelgrundkörpers 2 befestigten Zahnrad 13, während sich das Zahnrad 15.1 der Wendetrommel im Eingriff mit dem Zahnrad 14 befindet, das auf der Welle 8 befestigt ist.The gear 7.1 of the transfer drum 7 meshes with the gear 13 fastened on the hollow shaft 4 of the drum base body 2, while the gear 15.1 of the turning drum is in engagement with the gear 14 which is fastened on the shaft 8.

Zwischen den Zahnrädern 13,14 oder den beiden relativ zueinander verdrehbaren Teilen 2,9 der Bogenübergabetrommel sind Anschläge 23, 24 vorgesehen, die aneinander liegen, wenn die Bogenübergabetrommel 1 auf Schöndruckbetrieb eingestellt ist. Diese Anschläge sichern somit die Schöndruckstellung, bei der die Greifer 20 des Greifersystems 18 der Wendetrommel 15 mit den Greifern 6 der Bogenübergabetrommel 1 korrespondieren. Soll die Druckmaschine von Schön- und Widerdruckbetrieb auf Schöndruck zurückgestellt werden, brauchen nur die Anschläge gegeneinander gefahren zu werden, wobei in der Anschlagstellung eine Toleranz von 0,05 mm bezogen auf das Bogenmaß der Trommelmantelfläche eingehalten werden sollte.Between the gears 13, 14 or the two parts 2, 9 rotatable relative to one another Sheet transfer drum stops 23, 24 are provided which lie against each other when the sheet transfer drum 1 is set to face printing. These stops thus secure the fine printing position, in which the grippers 20 of the gripper system 18 of the turning drum 15 correspond to the grippers 6 of the sheet transfer drum 1. If the printing press is to be reset from face and back printing to face printing, only the stops need to be moved against each other, with a tolerance of 0.05 mm in relation to the radian dimension of the drum jacket surface should be maintained in the stop position.

In der der Grundstellung entsprechenden Schöndruckstellung entspricht die Bogenstrecke ? der Bogenübergabetrommel Bogenstrecke ? der Wendetrommel 15, wobei sich die Länge der Bogenstrecke ? aus der Verlagerungsstrecke der Bogenhinterkante beim Wenden zuzüglich des notwendigen Papierrandes zum Erfassen des Bogens 26 am vorderen und hinteren Ende ergibt.In the straight position corresponding to the basic position, does the arc distance correspond to? the sheet transfer drum sheet section? the turning drum 15, the length of the arc length? from the displacement distance of the trailing edge of the sheet when turning plus the necessary paper edge for gripping the sheet 26 at the front and rear ends.

Die in der Grundstellung (Schöndruck) gebildete Bogenstrecke ? ergibt sich aus dem Schnittpunkt der Greiferauflage der Einrichtung 21 zum Erfassen der Bogenhinterkante auf der Wendetrommel 15 mit der Geraden durch die Drehmittelpunkte der Wendetrommel 15 und der Bogenübergabetrommel 1 und der Greiferauflage der am Umfang der Bogenübergabetrommel 1 nächstgelegenen Einrichtung 6 zum Erfassen der Bogenvorderkante.The arc path formed in the basic position (face printing)? results from the point of intersection of the gripper support of the device 21 for grasping the trailing edge of the sheet on the turning drum 15 with the straight line through the centers of rotation of the turning drum 15 and the sheet transfer drum 1 and the gripper support of the device 6 closest to the circumference of the sheet transfer drum 1 for detecting the leading edge of the sheet.

Claims (1)

1. Sheet-fed rotary printing machine which can be converted from recto printing to recto and verso printing and vice versa,
having a sheet delivery or storage drum (1) which is arranged between two printing units (17; 19) and comprises a drum base body (2) with a device (6) for gripping the sheet leading edge, which drum base body (2) is mounted in the machine frame (5) by means of hollow shaft journals (3; 4), and which drum further comprises holding parts (9) which are provided with a device (10) for gripping the sheet trailing edges and which are secured to a shaft (8) mounted in the hollow shaft journals (3; 4),
having toothed wheels (13, 14) of the same diameter which are secured parallel to one another on a hollow shaft journal (4) and on the shaft end (11) mounted therein and of which one (13) meshes with the toothed wheel (7.1) of an upstream guiding-round drum (7) and the other (14) meshes with the toothed wheel (15.1) of the downstream (as seen in the transporting direction) turning drum (15), having a gripper system (18) for gripping either the sheet leading edges or the sheet trailing edges, and
having a detachable coupling (22) connecting the two toothed wheels (13, 14) at different angular positions of the devices (6; 10) for gripping the sheet leading and sheet trailing edges of the sheet delivery drum (1),

characterized in that in the recto printing position a sheet stretch (a- ), which results from the intersection of the gripper bearing point of the device (21) for gripping the sheet trailing edge on the turning drum (15) with the straight line through the centrepoints of rotation of the turning drum (15) and the sheet delivery drum (1) and the gripper bearing point of the nearest device (6), on the periphery of the sheet delivery drum (1), for gripping the sheet leading edge, corresponds to a sheet stretch (13) on the turning drum (15) which results from the transfer in position of the sheet trailing edge on turning plus the necessary paper edge for gripping the respective sheet at the leading and trailing ends thereof,
and in that the starting position, which corresponds to the recto printing position in the case of all the possible sheet lengths and corresponds to the recto and verso printing position in the case of the largest possible sheet length, can be adjusted by means of cooperating stops (23, 24) of the devices (6; 10) for gripping the sheet leading and sheet trailing edges on the sheet delivery drum (1) or the mutually couplable toothed wheels (13, 14).
EP88116634A 1987-10-12 1988-10-07 Rotary sheet-fed machine reversible from first impression to perfecting Expired - Lifetime EP0311924B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3734493 1987-10-12
DE3734493 1987-10-12
DE3738674 1987-11-13
DE19873738674 DE3738674A1 (en) 1987-10-12 1987-11-13 ARCH ROTARY PRINTING MACHINE, WHICH CAN BE CHANGED FROM BEAUTIFUL PRINTING TO BEAUTIFUL PRINTING AND REPRINTING

Publications (3)

Publication Number Publication Date
EP0311924A2 EP0311924A2 (en) 1989-04-19
EP0311924A3 EP0311924A3 (en) 1990-05-30
EP0311924B1 true EP0311924B1 (en) 1993-12-29

Family

ID=25860701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116634A Expired - Lifetime EP0311924B1 (en) 1987-10-12 1988-10-07 Rotary sheet-fed machine reversible from first impression to perfecting

Country Status (5)

Country Link
US (1) US4821643A (en)
EP (1) EP0311924B1 (en)
JP (1) JPH0624848B2 (en)
CS (1) CS276905B6 (en)
DE (2) DE3738674A1 (en)

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DE10102080B4 (en) * 2001-01-18 2014-03-06 Heidelberger Druckmaschinen Ag Device for turning flat copies in a sheet-fed rotary printing press
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JP4106249B2 (en) * 2001-07-30 2008-06-25 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト Device for turning sheet-shaped material upside down in sheet processing machine
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Also Published As

Publication number Publication date
DE3738674A1 (en) 1989-04-20
EP0311924A3 (en) 1990-05-30
CS673788A3 (en) 1992-03-18
EP0311924A2 (en) 1989-04-19
US4821643A (en) 1989-04-18
JPH0624848B2 (en) 1994-04-06
CS276905B6 (en) 1992-09-16
JPH01123749A (en) 1989-05-16
DE3886661D1 (en) 1994-02-10
DE3738674C2 (en) 1990-09-06

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