EP0158816B1 - Rotary sheet-printing machine for perfecting or multi-colour printing - Google Patents

Rotary sheet-printing machine for perfecting or multi-colour printing Download PDF

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Publication number
EP0158816B1
EP0158816B1 EP85102708A EP85102708A EP0158816B1 EP 0158816 B1 EP0158816 B1 EP 0158816B1 EP 85102708 A EP85102708 A EP 85102708A EP 85102708 A EP85102708 A EP 85102708A EP 0158816 B1 EP0158816 B1 EP 0158816B1
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EP
European Patent Office
Prior art keywords
sheet
printing
cylinder
turning
printing unit
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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
Application number
EP85102708A
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German (de)
French (fr)
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EP0158816A3 (en
EP0158816A2 (en
Inventor
Arno Wirz
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Priority to AT85102708T priority Critical patent/ATE34703T1/en
Publication of EP0158816A2 publication Critical patent/EP0158816A2/en
Publication of EP0158816A3 publication Critical patent/EP0158816A3/en
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Publication of EP0158816B1 publication Critical patent/EP0158816B1/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
    • B41F7/04—Rotary lithographic machines for offset printing using printing units incorporating one forme cylinder, one transfer cylinder, and one impression cylinder, e.g. for printing on webs
    • B41F7/06—Rotary lithographic machines for offset printing using printing units incorporating one forme cylinder, one transfer cylinder, and one impression cylinder, e.g. for printing on webs for printing on sheets

Definitions

  • the invention relates to a sheet-fed rotary printing machine for the production of single-sided multi-color printing or perfecting in series with at least one turning device and devices for processing both paper and cardboard, each printing unit except a plate and a blanket cylinder, a printing cylinder with at least double Has diameter and a sheet transfer drum.
  • a multi-color sheet-fed rotary printing press of the type outlined above is already known from DE-OS-2452167.
  • the counter-pressure cylinder of each printing unit - this machine and the turning cylinder arranged between two printing units are double in diameter.
  • a suction system provided on the turning cylinder detects the rear edge of the freshly printed sheet lying on the smooth sheet guiding surface of the impression cylinder.
  • the suction system transfers the detected sheet trailing edge to a gripper system, which then swings out again during the further rotary movement of the turning cylinder and now transfers the sheet with the trailing edge first to the gripper system of the subsequent impression cylinder.
  • the suction system is designed as part of a coupling of a double rocker.
  • the known multi-color sheet-fed rotary printing press is basically suitable for processing cardboard.
  • the trailing edge of the sheet has to be removed from the smooth counterpressure surface of the impression cylinder by means of a suction system, during the transfer process of the trailing edge of the sheet to the gripper system of the reversing cylinder, in spite of the use of a double rocker, kinking of the rear area of the sheet is inevitable, which means that thicker cardboard, if any, is processed , would only be possible in the low speed ranges.
  • a sheet turning device for the rotary printing press in series is also known, in which the printing cylinders of successive printing units are connected by a single sheet transfer drum.
  • two pairs of two interacting rows of clamping grippers existing gripper systems, are arranged in the printing cylinder, which follow the sheet transfer drum in the transport direction.
  • Printing cylinder and sheet transfer drum have double diameter.
  • suction boxes are provided which slightly lift the sheet to be turned from the outer surface of the sheet transfer drum as soon as a row of clamping grippers of the subsequent printing cylinder has gripped the rear edge of the sheet.
  • the sheet to be turned is kept taut by the suction boxes.
  • the suction boxes suck on the non-printed side of the sheet, as soon as the gripper systems of the printing cylinder after the turning process pulls the rear sheet edge from the last suction box, the printed underside of the sheet can either be on the surface of the sheet transfer drum or on the lateral surface of the now Open the sheet transporting printing cylinder, whereby smearing of the printed image is inevitable.
  • the rear edge of the sheet can hardly be transferred without kinking. This would give a thicker box permanent deformation that cannot be tolerated.
  • bent cardboard edges cause malfunctions by hitting the following gripper edges and preventing the cardboard from being correctly gripped.
  • a sheet-fed rotary printing press in unit construction with a device for optional perfecting and reverse printing in which a module designed as an independent unit is arranged between the similar printing units, which has a transfer cylinder and a subordinate one Reversing drum of the aforementioned type.
  • the transfer cylinder works with one or two drying devices.
  • the disadvantage of this module is that its side walls are not identical to those of the lower parts of the printing unit. The module therefore requires a special production.
  • the gripper devices of the turning drum obviously also suck the sheet from the transfer cylinder and transfer it to other gripping devices for the purpose of turning. A kinking of stiffer cardboard edges, as already explained above, cannot be avoided. You should also tear off the cardboard from the suction systems.
  • the object of the invention is to provide a convertible high-performance sheet-fed rotary offset printing press of the type mentioned at the outset for the smudge-free processing of paper up to thick cardboard using proven components which are also used in the other printing units.
  • the lower printing unit part designed as a turning device, can be provided at any point between two adjacent printing units in multi-color machines.
  • the following printing unit is then only instead of one Sheet transfer drum to be provided with a turning cylinder.
  • the use of storage drums enables the use of pliers gripper systems in the turning cylinder, which ensures that the trailing edge of the sheet is guided without kinking during the entire turning process, even with the thickest cardboard.
  • there is an exact feeding of the trailing edge of the sheet which is stretched in terms of circumference and side, even with different format sizes, until the pliers grippers of the turning drum are closed. Pressure-free rooms are not required for sheet transport.
  • the sheet guide with cylinders of double or triple diameter and the use of pliers grippers enables a precise printing of thick cardboard according to the one-sided finishing as well as the finishing and reverse printing process at high printing speeds. All printing unit units, even those in which parts of the turning device are accommodated, have the same side parts.
  • At least the sheet guiding surfaces of the reversing cylinder and that of the immediately following printing cylinders are provided with ink-releasing lifts.
  • These lifts have a structured arch support surface and are made of a wear-resistant, chemically resistant, ink-friendly material, such as nickel or chrome.
  • a drying device can be provided in the printing unit half provided with parts of the turning device above the storage drum. In this case, it is not necessary to provide ink-releasing elevators on the lateral surfaces of the printing cylinders that follow the turning device. Of course, there is also the possibility of using the aforementioned ink-releasing elevators to prevent smearing as well as of using a drying device.
  • An embodiment of the invention is shown in the single figure of the drawing. It is a four-color cardboard machine that can be converted to a two / two face and reverse printing machine.
  • the board machine has four printing units 1, 2, 3, 4, a printing unit lower part 5 equipped with parts of the turning device being arranged between the first printing unit and the printing units 3 and 4.
  • the sheets to be processed are fed from the feeder 6 via the feed table 7 to the feed cylinder 8 of the printing unit 1.
  • the feed cylinder 8 accelerates the aligned sheet and transfers it to the printing cylinder 9 of the printing unit 1.
  • the sheet receives its first imprint. Since the impression cylinder has a double diameter, it has two sheet guiding surfaces. It transfers the printed sheet to the sheet transfer drum 12 of the printing unit 2. This has three times the diameter.
  • the printing cylinder 9 of the printing unit 2 receives the sheet.
  • the second color is printed here via the plate cylinder 10 and rubber cylinder 11.
  • a printing unit lower part 5 adjoins printing unit 2, in which a sheet transfer drum 12 with a triple diameter and a storage drum 13 with a double diameter are mounted.
  • the storage drum 13 takes the place of a printing cylinder 9.
  • a UV or IR drying device 14 can be provided above the storage drum 13. The double-printed sheet is thus taken over by the sheet transfer drum 12 of the lower part 5 of the printing unit and fed to the storage drum 13.
  • the printed sheet side lies on top of it and can thus be dried by the drying device 14 during the passage.
  • the turning after previous smoothing takes place in the circumferential and lateral directions by the suction cups of the storage drum with the aid of the turning cylinder 15, which is mounted in the printing unit 3 instead of the sheet transfer drum 12.
  • the turning cylinder 15 has three times the diameter and thus three pliers gripper systems 16 distributed symmetrically on the circumference 9 of the printing unit 3.
  • the first back pressure takes place here with the aid of plate cylinder 10 and rubber cylinder 11.
  • the turning device is therefore distributed over two normal printing unit lower parts.
  • the printing unit 4 Since the printing unit 4 is constructed exactly like the printing unit 2 and thus has a sheet transfer drum 12 with a triple diameter, a printing cylinder 9 with a double diameter and plate 10 and rubber cylinder 11 with a single diameter, the sheet in this printing unit 4 experiences its second counterprint. Then the printing cylinder 9 transfers the sheet, which is printed twice on both sides, to the delivery drum 17, which is also twice the diameter. Whereupon the chain delivery 18 feeds the printed sheet or cardboard to the delivery stack 19 of the sheet delivery 20.
  • the advantage of the cardboard machine described is that, due to the large diameter of the sheet-guiding cylinders or drums, even thick cardboard is transported correctly, safely and without greasing.
  • the use of pliers grippers prevents the front edge of the box or the rear edge of the box from kinking.
  • a storage drum with integrated format adjustment with rotary suction cups on the rear edge By using a storage drum with integrated format adjustment with rotary suction cups on the rear edge, a far higher quality standard than the known turning devices can be achieved.
  • the multi-color printing machine shown offers the possibility of processing both paper and thick cardboard in a register-free and smudge-free manner in the entire format range, even at high printing speeds.
  • the lower part 5 of the printing unit could also be provided between the printing units 1 and 2 or 3 and 4. It is particularly advantageous that the side walls of the lower parts of the printing unit of the printing units 2, 3, 4 and 5 can be made absolutely identical.

Abstract

A sheet-fed rotary printing machine for single-side multi-color printing or perfector printing having an in-line type of construction with at least one sheet-turning device as well as devices for processing both papers and cardboard, and respective printing units each having, in addition to a plate cylinder and a blanket cylinder of equal given diameter, an impression cylinder having a diameter at least double the given diameter and a sheet transfer drum includes a lower printing-unit part with parts of the turning device located between an adjacent pair of the printing units, the lower printing-unit part having a storage drum in place of an impression cylinder, the storage drum being formed with at least two sheet-carrying surfaces, and a sheet transfer drum with a diameter at least double the given diameter, the printing unit of the adjacent pair of printing units following the lower printing-unit part, in travel direction of a sheet through the printing machine, having a sheet transfer drum formed as a turning cylinder following the storage drum, the turning cylinder carrying at least two systems of pincer-type grippers.

Description

Die Erfindung betrifft eine Bogen-Rotationsdruckmaschine zur Herstellung von einseitigem Mehrfarbendruck oder Schön- und Widerdruck in Reihenbauart mit mindestens einer Wendeeinrichtung sowie Einrichtungen zum Verarbeiten sowohl von Papier als auch von Karton, wobei jedes Druckwerk ausser einem Platten- und einem Gummizylinder einen Druckzylinder mit mindestens zweifachem Durchmesser sowie eine Bogenübergabetrommel aufweist.The invention relates to a sheet-fed rotary printing machine for the production of single-sided multi-color printing or perfecting in series with at least one turning device and devices for processing both paper and cardboard, each printing unit except a plate and a blanket cylinder, a printing cylinder with at least double Has diameter and a sheet transfer drum.

Eine Mehrfarben-Bogenrotationsdruckmaschine der oben umrissenen Art ist bereits aus der DE-OS-2452167 bekannt. Der Gegendruckzylinder jedes Druckwerks -dieser-Maschine und der zwischen zwei Druckwerken angeordnete Wendezylinder haben doppelten Durchmesser. Im Tangentenpunkt beider Zylinder erfasst ein am Wendezylinder vorgesehenes Saugersystem die Hinterkante des auf der glatten Bogenführungsfläche des Gegendruckzylinders liegenden, frisch bedruckten Bogens. Nach Einschwenken innerhalb des Umfangs des Wendezylinders übergibt das Saugersystem die erfasste Bogenhinterkante an ein Greifersystem, welches daraufhin während der weiteren Drehbewegung des Wendezylinders wieder ausschwenkt und den Bogen nunmehr mit der Hinterkante voran an das Greifersystem des nachfolgenden Gegendruckzylinders übergibt. Zur Erzielung einer registerhaitigen Bogenübergabe ist das Saugersystem als Teil einer Koppel einer Doppelschwinge ausgeführt.A multi-color sheet-fed rotary printing press of the type outlined above is already known from DE-OS-2452167. The counter-pressure cylinder of each printing unit - this machine and the turning cylinder arranged between two printing units are double in diameter. At the tangent point of both cylinders, a suction system provided on the turning cylinder detects the rear edge of the freshly printed sheet lying on the smooth sheet guiding surface of the impression cylinder. After swiveling in within the circumference of the turning cylinder, the suction system transfers the detected sheet trailing edge to a gripper system, which then swings out again during the further rotary movement of the turning cylinder and now transfers the sheet with the trailing edge first to the gripper system of the subsequent impression cylinder. In order to achieve a sheet transfer in register, the suction system is designed as part of a coupling of a double rocker.

Wegen der relativ grossen Durchmesser der bogenführenden Zylinder ist die bekannte Mehrfarben-Bogenrotationsdruckmaschine grundsätzlich zwar zur Verarbeitung von Karton geeignet. Da jedoch das Abnehmen der Bogenhinterkante von der glatten Gegendruckfläche des Druckzylinders mittels eines Saugersystems erfolgen muss, ist während des Übergabevorgangs der Bogenhinterkante an das Greifersystem des Wendezylinders trotz der Verwendung einer Doppelschwinge ein Abknicken des hinteren Bogenbereichs unvermeidlich, wodurch die Verarbeitung von dickerem Karton, wenn überhaupt, nur in den niedrigen Geschwindigkeitsbereichen möglich wäre. Das erwähnte Abknicken der Bogenhinterkante verursacht nämlich wegen der Steifigkeit des Kartons insbesondere bei höheren Maschinenleistungen ein Abreissen des Bogens vom Saugersystem. Ausserdem müssen bei diesem Wendesystem druckfreie Räume für Andrücksegmente vorhanden sein.Because of the relatively large diameter of the sheet-guiding cylinders, the known multi-color sheet-fed rotary printing press is basically suitable for processing cardboard. However, since the trailing edge of the sheet has to be removed from the smooth counterpressure surface of the impression cylinder by means of a suction system, during the transfer process of the trailing edge of the sheet to the gripper system of the reversing cylinder, in spite of the use of a double rocker, kinking of the rear area of the sheet is inevitable, which means that thicker cardboard, if any, is processed , would only be possible in the low speed ranges. The aforementioned kinking of the trailing edge of the sheet in fact causes the sheet to be torn off from the suction system because of the stiffness of the carton, particularly in the case of higher machine outputs. In addition, this turning system must have pressure-free spaces for pressure segments.

Aus der DE-AS-2305132 ist des weiteren eine Bogenwendevorrichtung für die Rotations-Druckmaschine in Reihenbauart bekannt, bei der die Druckzylinder aufeinanderfolgender Druckwerke durch eine einzige Bogenübergabetrommel verbunden sind. Zum Wenden des Bogens sind zwei Paar aus zwei zusammenwirkenden Klemmgreiferreihen, bestehende Greifersysteme in dem Druckzylinder angeordnet, welche der Bogenübergabetrommel in Transportrichtung folgt. Druckzylinder und Bogenübergabetrommel haben doppelten Durchmesser. Oberhalb der Bogenübergabetrommel sind Saugkästen vorgesehen, die den zu wendenden Bogen geringfügig von der Mantelfläche der Bogenübergabetrommel abheben, sobald eine Klemmgreiferreihe des nachfolgenden Druckzylinders die Bogenhinterkante erfasst hat. Während des Wendevorganges, d.h. während der Übergabe der Bogenhinterkante von dem einen Greifersystem an das andere, wird der zu wendende Bogen von den Saugkästen straff gehalten. Zwar saugen die Saugkästen die nicht bedruckte Seite des Bogens an, sobald aber die Greifersysteme des Druckzylinders nach dem Wendevorgang die nunmehr hintere Bogenkante von dem letzten Saugkasten abzieht, kann die bedruckte Unterseite des Bogens entweder auf die Oberfläche der Bogenübergabetrommel oder auf die Mantelfläche des nunmehr den Bogen transportierenden Druckzylinders aufschlagen, wodurch ein Verschmieren des Druckbildes unvermeidbar ist. Abgesehen von diesem Nachteil lässt sich mit den zwei Greiferreihen, die bei der jeweiligen Bogenwendung in Aktion treten, die Bogenhinterkante kaum ohne Abknicken übergeben. Damit erhielte ein dickerer Karton bleibende Verformungen, die nicht hingenommen werden können. Im übrigen verursachen hochgebogene Kartonkanten dadurch Betriebsstörungen, dass sie gegen die folgenden Greiferkanten anstossen und das korrekte Erfassen eines Kartons verhindern.From DE-AS-2305132 a sheet turning device for the rotary printing press in series is also known, in which the printing cylinders of successive printing units are connected by a single sheet transfer drum. To turn the sheet, two pairs of two interacting rows of clamping grippers, existing gripper systems, are arranged in the printing cylinder, which follow the sheet transfer drum in the transport direction. Printing cylinder and sheet transfer drum have double diameter. Above the sheet transfer drum, suction boxes are provided which slightly lift the sheet to be turned from the outer surface of the sheet transfer drum as soon as a row of clamping grippers of the subsequent printing cylinder has gripped the rear edge of the sheet. During the turning process, i.e. During the transfer of the trailing edge of the sheet from one gripper system to the other, the sheet to be turned is kept taut by the suction boxes. Although the suction boxes suck on the non-printed side of the sheet, as soon as the gripper systems of the printing cylinder after the turning process pulls the rear sheet edge from the last suction box, the printed underside of the sheet can either be on the surface of the sheet transfer drum or on the lateral surface of the now Open the sheet transporting printing cylinder, whereby smearing of the printed image is inevitable. Apart from this disadvantage, with the two rows of grippers that come into action each time the sheet is turned, the rear edge of the sheet can hardly be transferred without kinking. This would give a thicker box permanent deformation that cannot be tolerated. Incidentally, bent cardboard edges cause malfunctions by hitting the following gripper edges and preventing the cardboard from being correctly gripped.

Schliesslich ist aus der DE-OS-2639900 eine Bogen-Rotationsdruckmaschine in Aggregatbauweise mit einer Einrichtung für wahlweisen Schön-und Schön- und Widerdruck bekannt, bei der zwischen den gleichartigen Druckwerken ein als selbstständiges Aggregat ausgebildeter Baustein angeordnet ist, der einen Übergabezylinder und eine nachgeordnete Wendetrommel vorgenannter Art aufweist. Der Übergabezylinder arbeitet mit einer oder zwei Trockeneinrichtungen zusammen. Dieser Baustein hat den Nachteil, dass seine Seitenwände mit denen der Druckwerksunterteile nicht identisch sind. Der Baustein erfordert somit eine Sonderanfertigung. Ausserdem wird auch hier ganz offensichtlich von den Greifereinrichtungen der Wendetrommel der Bogen von dem Übergabezylinder angesaugt und an weitere Greifervorrichtungen zum Zwecke der Wendung übergeben. Ein Abknicken steiferer Kartonkanten lässt sich, wie weiter oben schon dargelegt, dabei nicht vermeiden. Auch ist ein Abreissen des Kartons von den Saugsystemen zu besorgen.Finally, from DE-OS-2639900 a sheet-fed rotary printing press in unit construction with a device for optional perfecting and reverse printing is known, in which a module designed as an independent unit is arranged between the similar printing units, which has a transfer cylinder and a subordinate one Reversing drum of the aforementioned type. The transfer cylinder works with one or two drying devices. The disadvantage of this module is that its side walls are not identical to those of the lower parts of the printing unit. The module therefore requires a special production. In addition, the gripper devices of the turning drum obviously also suck the sheet from the transfer cylinder and transfer it to other gripping devices for the purpose of turning. A kinking of stiffer cardboard edges, as already explained above, cannot be avoided. You should also tear off the cardboard from the suction systems.

Aufgabe der Erfindung ist die Schaffung einer umstellbaren Hochleistungs-Bogenrotationsoffsetdruckmaschine der eingangs genannten Gattung für die abschmierfreie Verarbeitung von Papier bis zu dickem Karton unter Verwendung von bewährten Bauteilen, die auch in den übrigen Druckwerken eingesetzt werden.The object of the invention is to provide a convertible high-performance sheet-fed rotary offset printing press of the type mentioned at the outset for the smudge-free processing of paper up to thick cardboard using proven components which are also used in the other printing units.

Die Lösung dieser Aufgabe beschreibt Anspruch 1. Das als Wendeeinrichtung ausgebildete untere Druckwerksteil kann bei Mehrfarbenmaschinen an jeder Stelle zwischen zwei benachbarten Druckwerken vorgesehen sein. Das jeweils folgende Druckwerk ist dann nur statt mit einer Bogenübergabetrommel, mit einem Wendezylinder zu versehen. Der Einsatz von Speichertrommeln ermöglicht die Verwendung von Zangengreifersystemen in dem Wendezylinder, wodurch ein abknickfreies Führen der Bogenhinterkante während des gesamten Wendevorganges selbst bei dickstem Karton gewährleistet ist. Darüber hinaus erfolgt eine nach Umfang und Seite gespannte, exakte Zuführung der Bogenhinterkante auch bei verschiedenen Formatgrössen, bis der die Zangengreifer der Wendetrommel geschlossen sind. Druckfreie Räume werden zum Bogentransport nicht benötigt.The solution to this problem is described in claim 1. The lower printing unit part, designed as a turning device, can be provided at any point between two adjacent printing units in multi-color machines. The following printing unit is then only instead of one Sheet transfer drum to be provided with a turning cylinder. The use of storage drums enables the use of pliers gripper systems in the turning cylinder, which ensures that the trailing edge of the sheet is guided without kinking during the entire turning process, even with the thickest cardboard. In addition, there is an exact feeding of the trailing edge of the sheet, which is stretched in terms of circumference and side, even with different format sizes, until the pliers grippers of the turning drum are closed. Pressure-free rooms are not required for sheet transport.

Die Bogenführung mit Zylindern doppelten oder dreifachen Durchmessers und der Einsatz von Zangengreifern ermöglicht ein passgenaues Drukken von dickem Karton sowohl nach dem einseitigen Schön- als auch nach dem Schön- und Widerdruckverfahren bei hohen Druckgeschwindigkeiten. Alle Druckwerkseinheiten, selbst diejenigen, in denen Teile der Wendeeinrichtung untergebracht sind, weisen gleiche Seitenteile auf.The sheet guide with cylinders of double or triple diameter and the use of pliers grippers enables a precise printing of thick cardboard according to the one-sided finishing as well as the finishing and reverse printing process at high printing speeds. All printing unit units, even those in which parts of the turning device are accommodated, have the same side parts.

Zur Vermeidung des Abschmierens der bedruckten Bogenseiten bei Schön- und Widerdruck sind zumindest die Bogenführungsflächen des Wendezylinders, sowie die der unmittelbar folgenden Druckzylinder mit farbabgebenden Aufzügen versehen. Diese Aufzüge weisen eine strukturierte Bogentragfläche auf und sind aus einem verschleissfesten, chemisch beständigen, farbabgabefreundlichen Material hergestellt, wie beispielsweise Nickel oder Chrom.To avoid smearing of the printed sheet sides in the case of face and back printing, at least the sheet guiding surfaces of the reversing cylinder and that of the immediately following printing cylinders are provided with ink-releasing lifts. These lifts have a structured arch support surface and are made of a wear-resistant, chemically resistant, ink-friendly material, such as nickel or chrome.

In vorteilhafter Weiterbildung der Erfindung kann in der mit Teilen der Wendeeinrichtung versehenen Druckwerkshälfte oberhalb der Speichertrommel eine Trockenvorrichtung vorgesehen sein. In diesem Falle erübrigt es sich, auf den Mantelflächen der Druckzylinder, die der Wendeeinrichtung folgen, farbabgebende Aufzüge vorzusehen. Es besteht natürlich auch die Möglichkeit, zum Verhindern des Abschmierens sowohl die erwähnten farbabgebenden Aufzüge einzusetzen, als auch von einer Trockenvorrichtung Gebrauch zu machen.In an advantageous development of the invention, a drying device can be provided in the printing unit half provided with parts of the turning device above the storage drum. In this case, it is not necessary to provide ink-releasing elevators on the lateral surfaces of the printing cylinders that follow the turning device. Of course, there is also the possibility of using the aforementioned ink-releasing elevators to prevent smearing as well as of using a drying device.

Eine Ausführungsform der Erfindung ist in der einzigen Figur der Zeichnung dargestellt. Es handelt sich um eine Vierfarbenkartonmaschine, die auf eine zwei/zwei Schön- und Widerdruckmaschine umstellbar ist.An embodiment of the invention is shown in the single figure of the drawing. It is a four-color cardboard machine that can be converted to a two / two face and reverse printing machine.

Die Kartonmaschine nach der Figur hat vier Druckwerke 1,2,3,4, wobei zwischen dem ersten Druckwerk und dem Druckwerk 3 und 4 ein mit Teilen der Wendeeinrichtung bestücktes Druckwerksunterteil 5 angeordnet ist. Vom Anleger 6 werden über den Anlegetisch 7 dem Anlegezylinder 8 des Druckwerkes 1 die zu verarbeitenden Bogen zugeführt. Der Anlegezylinder 8 beschleunigt den ausgerichteten Bogen und übergibt ihn an den Druckzylinder 9 des Druckwerks 1. Mittels Plattenzylinder 10 und Gummizylinder 11, die beide einfachen Durchmesser besitzen, erhält der Bogen seinen ersten Aufdruck. Da der Druckzylinder doppelten Durchmesser aufweist, besitzt er zwei Bogenführungsflächen. Er übergibt den bedruckten Bogen an die Bogenübergabetrommel 12 des Druckwerks 2. Diese hat dreifachen Durchmesser. Dann erhält der Druckzylinder 9 des Druckwerkes 2 den Bogen. Über den Plattenzylinder 10 und Gummizylinder 11 wird hier die zweite Farbe aufgedruckt.The board machine according to the figure has four printing units 1, 2, 3, 4, a printing unit lower part 5 equipped with parts of the turning device being arranged between the first printing unit and the printing units 3 and 4. The sheets to be processed are fed from the feeder 6 via the feed table 7 to the feed cylinder 8 of the printing unit 1. The feed cylinder 8 accelerates the aligned sheet and transfers it to the printing cylinder 9 of the printing unit 1. By means of a plate cylinder 10 and a rubber cylinder 11, both of which have a simple diameter, the sheet receives its first imprint. Since the impression cylinder has a double diameter, it has two sheet guiding surfaces. It transfers the printed sheet to the sheet transfer drum 12 of the printing unit 2. This has three times the diameter. Then the printing cylinder 9 of the printing unit 2 receives the sheet. The second color is printed here via the plate cylinder 10 and rubber cylinder 11.

Wie schon zuvor erwähnt, schliesst an Druckwerk 2 ein Druckwerksunterteil 5 an, in dem eine Bogenübergabetrommel 12 mit dreifachem Durchmesser und eine Speichertrommel 13 mit doppeltem Durchmesser gelagert sind. Die Speichertrommet 13 nimmt die Stelle eines Druckzylinders 9 ein. Oberhalb der Speichertrommel 13 kann eine UV- oder IR-Trockenvorrichtung 14 vorgesehen sein. Der zweifach bedruckte Bogen wird also von der Bogenübergabetrommel 12 des Druckwerksunterteils 5 übernommen und der Speichertrommel 13 zugeführt. Auf ihr liegt die bedruckte Bogenseite nach oben und kann somit von der Trockenvorrichtung 14 während des Passierens getrocknet werden. In der dargestellten Einstellung der Kartonmaschine erfolgt nach Umführen des zweifach bedruckten und getrockneten Bogens die Wendung nach vorhergegangenem Glätten in Umfangs- und Seitenrichtung durch die Drehsauger der Speichertrommel mit Hilfe des Wendezylinders 15, der in dem Druckwerk 3 anstelle der Bogenübergabetrommel 12 gelagert ist. Der Wendezylinder 15 hat dreifachen Durchmesser und somit symmetrisch auf dem Umfang verteilt drei Zangengreifersysteme 16. Wie die Figur zeigt, erfassen in der Schön- und Widerdruckeinstellung der Kartonmaschine die Zangengreifersysteme 16 den Bogen an der Hinterkante und führen ihn somit nunmehr mit der Hinterkante voran dem Druckzylinder 9 des Druckwerkes 3 zu. Hier erfolgt mit Hilfe von Plattenzylinder 10 und Gummizylinder 11 der erste Widerdruck. Die Wendeeinrichtung ist also auf zwei normale Druckwerksunterteile verteilt.As already mentioned, a printing unit lower part 5 adjoins printing unit 2, in which a sheet transfer drum 12 with a triple diameter and a storage drum 13 with a double diameter are mounted. The storage drum 13 takes the place of a printing cylinder 9. A UV or IR drying device 14 can be provided above the storage drum 13. The double-printed sheet is thus taken over by the sheet transfer drum 12 of the lower part 5 of the printing unit and fed to the storage drum 13. The printed sheet side lies on top of it and can thus be dried by the drying device 14 during the passage. In the illustrated setting of the board machine, after turning the double-printed and dried sheet, the turning after previous smoothing takes place in the circumferential and lateral directions by the suction cups of the storage drum with the aid of the turning cylinder 15, which is mounted in the printing unit 3 instead of the sheet transfer drum 12. The turning cylinder 15 has three times the diameter and thus three pliers gripper systems 16 distributed symmetrically on the circumference 9 of the printing unit 3. The first back pressure takes place here with the aid of plate cylinder 10 and rubber cylinder 11. The turning device is therefore distributed over two normal printing unit lower parts.

Da das Druckwerk 4 genau wie Druckwerk 2 ausgebildet ist und somit eine Bogenübergabetrommel 12 mit dreifachem Durchmesser, einen Druckzylinder 9 mit zweifachem Durchmesser sowie Platten- 10 und Gummizylinder 11 mit einfachem Durchmesser aufweist, erfährt der Bogen in diesem Druckwerk 4 seinen zweiten Widerdruck. Danach übergibt Druckzylinder 9 den an beiden Seiten zweifach bedruckten Bogen an die Auslegetrommel 17, die gleichfalls zweifachen Durchmesser aufweist. Worauf der Kettenausleger 18 den bedruckten Bogen oder Karton dem Auslagestapel 19 des Bogenauslegers 20 zuführt.Since the printing unit 4 is constructed exactly like the printing unit 2 and thus has a sheet transfer drum 12 with a triple diameter, a printing cylinder 9 with a double diameter and plate 10 and rubber cylinder 11 with a single diameter, the sheet in this printing unit 4 experiences its second counterprint. Then the printing cylinder 9 transfers the sheet, which is printed twice on both sides, to the delivery drum 17, which is also twice the diameter. Whereupon the chain delivery 18 feeds the printed sheet or cardboard to the delivery stack 19 of the sheet delivery 20.

Für den Fall, dass die Bogenauflageflächen der Druckzylinder 9 der beiden Druckwerke 3 und 4 mit farbabgebenden Aufzügen versehen sind, braucht eine Trockenvorrichtung im Druckwerksunterteil 5 nicht vorgesehen zu sein, da die erwähnten Aufzüge aufgrund der Struktur ihrer bogentragenden Flächen sowie ihres Materials ein Abschmieren der druckfrischen Bogenunterseite vermeiden. Es besteht aber auch die Möglichkeit, ein Abschmieren auf jeden Fall zu verhindern, indem sowohl die Trockenvorrichtung 14 als auch die erwähnten farbabgebenden Aufzüge, z. B. bei Papieren mit besonders glatter Oberfläche, eingesetzt werden.In the event that the sheet support surfaces of the printing cylinders 9 of the two printing units 3 and 4 are provided with ink-releasing elevators, a drying device in the printing unit lower part 5 need not be provided, since the elevators mentioned, due to the structure of their sheet-bearing surfaces and their material, lubricate the freshly printed Avoid the underside of the sheet. But there is also the possibility to prevent smearing in any case by both the drying device 14 and the above-mentioned ink-releasing elevators, for. B. at Papers with a particularly smooth surface can be used.

Der Vorteil der beschriebenen Kartonmaschine besteht darin, dass aufgrund der grossen Durchmesser der bogenführenden Zylinder bzw. Trommeln selbst dicker Karton einwandfrei, sicher und ohne Abschmieren transportiert wird. Durch den Einsatz von Zangengreifern lässt sich ein Abknikken der Kartonvorderkante bzw. der Kartonhinterkante vermeiden. Durch den Einsatz einer mit integrierter Formatverstellung versehenen Speichertrommel mit Drehsaugern an der Hinterkante kann ein weit höherer Qualitätsstandart gegenüber den bekannten Wendeeinrichtungen erreicht werden. Alles in allem bietet die dargestellte Mehrfarbendruckmaschine die Möglichkeit, sowohl Papiere als auch dickeren Karton passerhaltig und abschmierfrei im gesamten Formatbereich, selbst bei hohen Druckgeschwindigkeiten, zu verarbeiten. Es ist einleuchtend, dass das Druckwerksunterteil 5 auch zwischen den Druckwerken 1 und 2 oder 3 und 4 vorgesehen sein könnte. Besonders vorteilhaft ist, dass die Seitenwände der Druckwerksunterteile der Druckwerke 2,3,4 und 5 absolut gleich ausgebildet werden können.The advantage of the cardboard machine described is that, due to the large diameter of the sheet-guiding cylinders or drums, even thick cardboard is transported correctly, safely and without greasing. The use of pliers grippers prevents the front edge of the box or the rear edge of the box from kinking. By using a storage drum with integrated format adjustment with rotary suction cups on the rear edge, a far higher quality standard than the known turning devices can be achieved. All in all, the multi-color printing machine shown offers the possibility of processing both paper and thick cardboard in a register-free and smudge-free manner in the entire format range, even at high printing speeds. It is obvious that the lower part 5 of the printing unit could also be provided between the printing units 1 and 2 or 3 and 4. It is particularly advantageous that the side walls of the lower parts of the printing unit of the printing units 2, 3, 4 and 5 can be made absolutely identical.

Claims (3)

1. Sheet-fed rotary printing machine for single- side multi-colour printing or perfecting of an in- line construction with at least one turning device and with devices for processing both paper and cardboard, each printing unit (1,2,3,4) having, in addition to a plate cylinder (10) and a blanket cylinder (11), an impression cylinder (9) with at least a double-sized diameter and a sheet transfer drum (12), wherein between two neighbouring printing units (2, 3) there is provided a lower printing unit section (5) comprising parts of a turning device, wherein, in place of the impression cylinder (9), said lower printing unit section (5) has a storage drum (13) with at least two sheet- carrying surfaces and also a sheet transfer drum (12) with at least a double-sized diameter, and wherein the respective sheet transfer drum (12), following a storage drum (13), of the adjacent printing unit (3) is designed as a turning cylinder (15) with at least two pincer-type gripper systems (16).
2. Sheet-fed rotary printing machine according to claim 1, wherein at least the sheet-guiding surfaces of the impression cylinder (9), directly following the turning cylinder (15), are provided with ink-transferring packings.
3. Sheet-fed rotary printing machine according to claim 1, wherein in the printing unit section (5), arranged between two printing units, there is provided a drying device (14), e.g. an ultraviolet or an infra-red drying device, above the storage drum (13).
EP85102708A 1984-04-07 1985-03-09 Rotary sheet-printing machine for perfecting or multi-colour printing Expired EP0158816B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85102708T ATE34703T1 (en) 1984-04-07 1985-03-09 SHEET ROTARY PRINTING MACHINE FOR PRODUCTION OF ONE-SIDED MULTICOLOR PRINTING OR PERFECT PRINTING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3413159A DE3413159C2 (en) 1984-04-07 1984-04-07 Sheet-fed rotary offset printing machine for the production of one-sided multi-color printing or double-sided printing
DE3413159 1984-04-07

Publications (3)

Publication Number Publication Date
EP0158816A2 EP0158816A2 (en) 1985-10-23
EP0158816A3 EP0158816A3 (en) 1986-05-07
EP0158816B1 true EP0158816B1 (en) 1988-06-01

Family

ID=6232952

Family Applications (1)

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EP85102708A Expired EP0158816B1 (en) 1984-04-07 1985-03-09 Rotary sheet-printing machine for perfecting or multi-colour printing

Country Status (8)

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US (1) US4732084A (en)
EP (1) EP0158816B1 (en)
JP (1) JPS60232958A (en)
AT (1) ATE34703T1 (en)
AU (1) AU3912485A (en)
CA (1) CA1234012A (en)
DE (2) DE3413159C2 (en)
ZA (1) ZA851191B (en)

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Also Published As

Publication number Publication date
EP0158816A3 (en) 1986-05-07
ZA851191B (en) 1985-10-30
JPS60232958A (en) 1985-11-19
DE3563005D1 (en) 1988-07-07
AU3912485A (en) 1985-10-10
EP0158816A2 (en) 1985-10-23
CA1234012A (en) 1988-03-15
DE3413159A1 (en) 1985-10-24
DE3413159C2 (en) 1986-09-18
US4732084A (en) 1988-03-22
ATE34703T1 (en) 1988-06-15

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