EP0166128B1 - Rotary printing machine for sheets having the printing units in line - Google Patents

Rotary printing machine for sheets having the printing units in line Download PDF

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Publication number
EP0166128B1
EP0166128B1 EP85105434A EP85105434A EP0166128B1 EP 0166128 B1 EP0166128 B1 EP 0166128B1 EP 85105434 A EP85105434 A EP 85105434A EP 85105434 A EP85105434 A EP 85105434A EP 0166128 B1 EP0166128 B1 EP 0166128B1
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EP
European Patent Office
Prior art keywords
sheet
printing
cylinder
transfer
turning
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Expired
Application number
EP85105434A
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German (de)
French (fr)
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EP0166128A2 (en
EP0166128A3 (en
Inventor
Arno Wirz
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Publication of EP0166128A2 publication Critical patent/EP0166128A2/en
Publication of EP0166128A3 publication Critical patent/EP0166128A3/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 machine in series design of the printing units for processing both paper and cardboard in one-sided multi-color printing or face-and-face printing with at least one turning device, each printing unit except a plate and a blanket cylinder, a printing cylinder and has a transfer drum with at least twice the diameter.
  • a multi-color sheet-fed rotary printing press of the type outlined above is already known from DE-OS 24 52 167.
  • the impression cylinder of each printing unit of 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 trailing edge of the sheet to a gripper system, which then swings out again during the further rotational 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 swing arm.
  • the well-known multi-color sheet-fed rotary printing press is basically suitable for processing cardboard: however, since the trailing edge of the sheet must be removed from the smooth counter-pressure surface of the printing cylinder by means of a suction system. during the transfer process of the sheet rear edge to the gripper system of the turning cylinder, kinking of the rear sheet area is unavoidable despite the use of a double rocker. which makes processing thicker cardboard, if any. 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 due to the stiffness of the carton, particularly with higher machine outputs. In addition, pressure-free spaces for pressure segments must be available with this turning system.
  • a sheet turning device for rotary printing presses in series is also known.
  • the printing cylinders of successive printing units are connected by a single transfer drum.
  • two pairs of gripper systems consisting of two interacting rows of clamping grippers are arranged in the pressure cylinder, which follow the transfer drum in the transport direction.
  • Printing cylinder and transfer drum are double in diameter.
  • Suction boxes are provided above the transfer drum. which slightly lift the sheet to be turned from the outer surface of the transfer drum. as soon as a gill gripper row of the subsequent printing cylinder has gripped the trailing 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 pull the rear sheet edge from the last suction box after the turning process, the printed underside of the sheet can either be on the surface of the 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 trailing edge of the sheet can hardly be transferred without kinking with the two rows of grippers that come into action when the sheet is turned. 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.
  • DE-OS 26 39 900 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 same printing units. which has a transfer drum and a downstream turning cylinder of the aforementioned type.
  • the transfer drum works with one or two drying devices.
  • the sheet is obviously also sucked in by the gripper devices of the turning cylinder on the lateral surface of the transfer drum and transferred to other gripper devices for the purpose of turning.
  • a bending of stiffer cardboard edges can be done, as already explained above. do not avoid doing so. You should also tear off the cardboard from the suction systems.
  • the drying facilities also represent a considerable effort. They require a lot of energy.
  • a particular disadvantage of the drying facilities is, however. that they are used in the middle of the printing process and tend to heat up the associated cylinder. Excessive heating can then result in tensions in large-area printed sheets, which can lead to registration errors, especially since the printing takes place in the case of perfecting after printing the single-color reverse print and before applying the multicolour fine print.
  • the object of the invention is to provide a high-performance sheet-fed rotary printing press for single-sided multi-color printing and for face and reverse printing. which guarantees a smudge-free and damage-free, register-containing processing of paper up to thick cardboard.
  • the relatively large diameters of all sheet-guiding cylinders and drums make it easier to transport the sheets with register.
  • the use of pliers grippers in cooperation with the storage drum and the hook grippers of the impression cylinder following the turning cylinder enable sheet transfer during the turning process without kinking or damaging the sheet edge. Waste can be avoided in this way. Stops are also switched off due to bent sheet edges. The precautions for the smear-free transport of the sheets ultimately make a drying device which consumes a lot of energy unnecessary and possibly deform the sheets.
  • a simple base frame for holding a transfer drum and a storage drum does not mean a particularly great outlay if the transfer drum and storage drum as well as the reversing cylinder are used in other series machine types anyway and can be taken over without further ado.
  • the counter-pressure surfaces of the printing cylinders which are connected downstream of the turning cylinder, are provided with color-repellent outer surfaces, e.g. in the form of lifts.
  • Such lifts are disclosed in DE 2446188 and DE-OS 2916505.
  • the sheet guiding surfaces of the transfer drums and the reversing cylinder can either be provided with closed outer surfaces that are ready to give off paint, or with rods and supporting elements, e.g. B. rolls. be equipped.
  • rods and supporting elements e.g. B. rolls. be equipped.
  • a particularly favorable development of the invention consists in this. that the transfer drum and the turning cylinder are provided with removable shells forming the sheet guiding surfaces. When processing paper. especially of lighter papers. these bowls are used. Should stiffer bends, e.g. Cardboard, printed, the shells can be removed from the transfer drums and turning cylinders, because there is no need for sheet guiding elements. This has the advantage. that the outer surfaces of the shells, which like to give off color, do not need to be washed frequently. The optional use of these trays enables the printer to design the most favorable makeready times.
  • FIG. 1 shows a section of a cardboard machine for single-sided multi-color printing, convertible to perfecting.
  • the feeder and delivery arm are not shown in the figure.
  • the printing unit 1 is also only partially shown. Its printing cylinder 2 transfers the sheet 3 by means of its normal clamping gripper 4 to the subsequent transfer drum 5. Printing cylinder 2 and transfer drum have double diameter.
  • the transfer drum 5 is mounted in a simple base frame 6, which is also used to hold a storage drum 7.
  • the storage drum 7 takes over the sheet from the transfer drum 5 with its hook gripper rows 8.
  • the adopted sheet 3 is tightened on the storage drum 7 by means of suction cups 9, so that the sheet rear edge assumes a predetermined position corresponding to the aligned front edge.
  • the simple base frame 6 is followed by a printing unit 10.
  • This essentially consists of the plate cylinder 11 and blanket cylinder 12, both with a single diameter, and from the printing cylinder 13 and the reversing cylinder 14, the latter two with a double diameter.
  • the turning cylinder 14 has two diametrically opposite rows of pliers grippers 15. Furthermore, the sheet guiding surfaces of the turning cylinder 14 are formed by two removable shells 16 which are provided with an elevator which is easy to dispense of paint. These trays are used when processing paper. However, they have to be washed frequently so that their outer surfaces retain the paint-dispensing properties to a sufficient extent. When processing stiffer papers or even cardboard, the trays are removed because special sheet guiding surfaces are not necessary. Of course, this also eliminates the need to wash the jacket surfaces. As a result, the downtimes of the board machine are considerably reduced.
  • the printing cylinder 13 adjoining the turning cylinder 14 likewise has specially designed hook grippers 8, just like the storage drum 7, so that the sheet transfer from the turning cylinder 14 to the printing cylinder 13 is possible by means of the pliers grippers 15.
  • the pliers grippers 15 take over the sheets on their front edge from the hook grippers 8 of the storage drum 7. Is the perfecting process used? there is a turn of the sheet, and the pliers grippers grip the rear edge of the sheet 3 which is guided past the turning cylinder 14 on the storage drum 7, which, as already mentioned above, is tightened by the suction cups 9.
  • Base frame and printing unit 10 together form the turning device.
  • the printing unit 10 that follows the printing unit 17 corresponds in its structure completely to printing unit 1.
  • the subsequent printing unit 18, which is only shown to a small extent, has the normal structure, which consists of the fact that in addition to plate cylinders 11. rubber cylinders 12 and Printing cylinder 2 with normal clamping gripper rows 4, a transfer drum 19 with a triple diameter is provided.
  • three rows of normaie clamp grippers 4 are arranged symmetrically on the circumference of the transfer drum 19.
  • the board machine can apply four-color printing on sheets as well as on rigid cardboard.
  • two-sided prints of various types can be produced. For example, if the board machine had six printing units and the third printing unit corresponded to printing unit 10, a two-color print could be applied on one side of the box and a four-color print on the opposite side.
  • the particular advantage of the described cardboard machine according to the invention is that it processes both paper and thick cardboard in a register-free and lubrication-free manner in the entire format range even at high printing speeds. If necessary, two turning devices can of course also be provided.

Description

Die Erfindung geht aus von einer Bogenrotationsdruckmaschine in Reihenbauart der Druckwerke zur Verarbeitung sowohl von Papier als auch von Karton im einseitigen Mehrfarbendruck- oder Schön-und-Widerdruck-Verfahren mit mindestens einer Wendeeinrichtung, wobei jedes Druckwerk außer einem Platten- und einem Gummizylinder einen Druckzylinder sowie eine Umführtrommel mit mindestens zweifachem Durchmesser aufweist.The invention relates to a sheet-fed rotary printing machine in series design of the printing units for processing both paper and cardboard in one-sided multi-color printing or face-and-face printing with at least one turning device, each printing unit except a plate and a blanket cylinder, a printing cylinder and has a transfer drum with at least twice the diameter.

Eine Mehrfarben-Bogenrotationsdruckmaschine der oben umrissenen Art ist bereits aus der DE-OS 24 52 167 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 registerhaltigen 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 24 52 167. The impression cylinder of each printing unit of 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 trailing edge of the sheet to a gripper system, which then swings out again during the further rotational 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 that is in register, the suction system is designed as part of a coupling of a double swing arm.

Wegen der relativ großen Durchmesser der bogenführenden Zylinder ist die bekannte Mehrfarben-Bogenrotatinsdruckmaschine 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 unvermeidbar. 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 well-known multi-color sheet-fed rotary printing press is basically suitable for processing cardboard: however, since the trailing edge of the sheet must be removed from the smooth counter-pressure surface of the printing cylinder by means of a suction system. during the transfer process of the sheet rear edge to the gripper system of the turning cylinder, kinking of the rear sheet area is unavoidable despite the use of a double rocker. which makes processing thicker cardboard, if any. 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 due to the stiffness of the carton, particularly with higher machine outputs. In addition, pressure-free spaces for pressure segments must be available with this turning system.

Aus der DE-AS 2 305 132 ist des weiteren eine Bogenwendevorrichtung für Rotationsdruckmaschinen in Reihenbauart bekannt. bei der die Druckzylinder aufeinanderfolgender Druckwerke durch eine einzige Umführtrommel verbunden sind. Zum Wenden des Bogens sind zwei Paar aus zwei zusammenwirkenden Klemmgreiferreihen bestehende Greifersysteme in dem Druckzylinder angeordnet, welche der Umführtrommel in Transportrichtung folgt. Druckzylinder und Umführtrommel haben doppelten Durchmesser. Oberhalb der Umführtrommel sind Saugkästen vorgesehen. die den zu wendenden Bogen geringfügig von der Mantelfläche der Umführtrommel abheben. sobald eine Kiemmgreiferreihe 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 Unterseit des Bogens entweder auf die Oberfläche der Umführtrommel 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 2 305 132 a sheet turning device for rotary printing presses in series is also known. in which the printing cylinders of successive printing units are connected by a single transfer drum. To turn the sheet, two pairs of gripper systems consisting of two interacting rows of clamping grippers are arranged in the pressure cylinder, which follow the transfer drum in the transport direction. Printing cylinder and transfer drum are double in diameter. Suction boxes are provided above the transfer drum. which slightly lift the sheet to be turned from the outer surface of the transfer drum. as soon as a gill gripper row of the subsequent printing cylinder has gripped the trailing 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 pull the rear sheet edge from the last suction box after the turning process, the printed underside of the sheet can either be on the surface of the 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, the trailing edge of the sheet can hardly be transferred without kinking with the two rows of grippers that come into action when the sheet is turned. 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 26 39 900 eine Bogen-Rotationsdruckmaschine in Aggregatbauweise mit einer Einrichtung für wahlweisen Schön- und Schön- und Widerdruck bekannt, bei der zwischen den gleichartigen Druckwerken ein als selbständiges Aggregat ausgebildeter Baustein angeordnet ist. der eine Umführtrommel und einen nachgeordneten Wendezylinder vorgenannter Art aufweist. Die Umführtrommel arbeitet mit einer oder zwei Trockeneinrichtungen zusammen.Finally, from DE-OS 26 39 900 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 same printing units. which has a transfer drum and a downstream turning cylinder of the aforementioned type. The transfer drum works with one or two drying devices.

Bei diesem bekannten Baustein wird ganz offensichtlich ebenfalls der Bogen von den Greifereinrichtungen des Wendezylinders auf der Mantelfläche der Umführtrommel 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. Die Trockeneinrichtungen stellen überdies einen beträchtlichen Aufwand dar. Sie erfordern nicht wenig Energie. Ein besonderer Nachteil der Trockeneinrichtungen ist jedoch. daß sie mitten im Druckprozeß eingesetzt werden und dazu neigen, den zugeordneten Zylinder aufzuheizen. Durch übermäßige Erwärmung können dann in großflächig bedruckten dünneren Bogen Spannungen entstehen, die zu Passerfehlern führen, zumal bei Schön- und Widerdruck im nach dem Drucken des Einfarbenwiderdruckes und vor dem Aufbringen des Mehrfarbenschöndruckes die Trocknung erfolgt.In this known module, the sheet is obviously also sucked in by the gripper devices of the turning cylinder on the lateral surface of the transfer drum and transferred to other gripper devices for the purpose of turning. A bending of stiffer cardboard edges can be done, as already explained above. do not avoid doing so. You should also tear off the cardboard from the suction systems. The drying facilities also represent a considerable effort. They require a lot of energy. A particular disadvantage of the drying facilities is, however. that they are used in the middle of the printing process and tend to heat up the associated cylinder. Excessive heating can then result in tensions in large-area printed sheets, which can lead to registration errors, especially since the printing takes place in the case of perfecting after printing the single-color reverse print and before applying the multicolour fine print.

Aufgabe der Erfindung ist die Schaffung einer Hochleistungs-Bogenrotationsdruckmaschine für einseitigen Mehrfarbendruck und für Schön- und Widerdruck. die eine abschmier- und beschädigungsfreie, passerhaltige Verarbeitung von Papier bis zu dickem Karton gewährleistet.The object of the invention is to provide a high-performance sheet-fed rotary printing press for single-sided multi-color printing and for face and reverse printing. which guarantees a smudge-free and damage-free, register-containing processing of paper up to thick cardboard.

Die Lösung dieser Aufgabe ergibt sich aus der Gesamtlehre des Anspruchs 1.The solution to this problem results from the overall teaching of claim 1.

Die relativ großen Durchmesser aller bogenführenden Zylinder und Trommeln begünstigen das passerhaltige Transportieren der Bogen. Die Verwendung von Zangengreifern im Zusammenwirken mit der Speichertrommel und den Hakengreifern des dem Wendezylinder folgenden Druckzylinders ermöglichen eine Bogenübergabe während des Wendevorganges ohne Abknicken oder Beschädigen der Bogenkante. Dadurch läßt sich Makulatur vermeiden. Auch werden Stopper aufgrund abgeknickter Bogenkanten ausgeschaltet. Die Vorkehrungen zum abschmierfreien Transport der Bogen erübrigen schießlich eine viel Energie verzehrende, die Bogen eventuell verformende Trockenvorrichtung.The relatively large diameters of all sheet-guiding cylinders and drums make it easier to transport the sheets with register. The use The use of pliers grippers in cooperation with the storage drum and the hook grippers of the impression cylinder following the turning cylinder enable sheet transfer during the turning process without kinking or damaging the sheet edge. Waste can be avoided in this way. Stops are also switched off due to bent sheet edges. The precautions for the smear-free transport of the sheets ultimately make a drying device which consumes a lot of energy unnecessary and possibly deform the sheets.

Ein einfaches Grundgestell zur Aufnahme einer Umführtrommel und einer Speichertrommel bedeutet dann keinen besonders großen Aufwand, wenn Umführtrommel und Speichertrommel sowie auch Wendezylinder ohnehin in anderen Serienmaschinentypen Anwendung finden und ohne weiteres übernommen werden können. Als Sonderfertigung sind somit lediglich zwei ganz einfache Seitenwände zur Erstellung der Wendeeinrichtung notwendig.A simple base frame for holding a transfer drum and a storage drum does not mean a particularly great outlay if the transfer drum and storage drum as well as the reversing cylinder are used in other series machine types anyway and can be taken over without further ado. As a special production, only two very simple side walls are required to create the turning device.

In einer vorteilhaften Ausführungsform der Erfindung sind die Gegendruckflächen der Druckzylinder, die dem Wendezylinder nachgeschaltet sind, mit farbabweisenden Mantelflächen, z.B. in Form von Aufzügen, versehen. Derartige Aufzüge sind in der DE 2446188 und DE-OS 2916505 offenbart. Die Bogenführungsflächen der Umführtrommeln und der Wendezylinder können entweder mit geschlossenen farbabgabefreudigen Mantelflächen versehen oder mit Stangen und Tragelementen, z. B. Röllchen. ausgestattet sein. Bei Verarbeitung von steifem Karton besteht aber auch die Möglichkeit, sowohl bei den Umführtrommeln als auch bei den Wendezylindern ganz auf Bogenstütz- und Führungselemente zu verzichten. Dies ist deshalb möglich. weil die bogenführenden Trommeln und Zylinder mindestens zweifachen Durchmesser haben.In an advantageous embodiment of the invention, the counter-pressure surfaces of the printing cylinders, which are connected downstream of the turning cylinder, are provided with color-repellent outer surfaces, e.g. in the form of lifts. Such lifts are disclosed in DE 2446188 and DE-OS 2916505. The sheet guiding surfaces of the transfer drums and the reversing cylinder can either be provided with closed outer surfaces that are ready to give off paint, or with rods and supporting elements, e.g. B. rolls. be equipped. When processing stiff cardboard, it is also possible to do without bow support and guide elements for both the transfer drums and the reversing cylinders. This is therefore possible. because the bow-guiding drums and cylinders are at least twice the diameter.

Eine besonders günstige Weiterbildung der Erfindung besteht darin. daß Umführtrommel und Wendezylinder mit die Bogenführungsflächen bildenden abnehmbaren Schalen versehen sind. Bei Verarbeitung von Papier. insbesondere von leichteren Papieren. kommen diese Schalen zum Einsatz. Sollen indes steifere Bögen, z.B. Karton, bedruckt werden, können die Schalen von den Umführtrommeln und Wendezylindern entfernt werden, weil sich Bogenführungselemente erübrigen. Dies hat den Vorteil. daß die farbabgabefreudigen Mantelflächen der Schalen nicht des öfteren gewaschen zu werden brauchen. Der wahlweise Einsatz dieser Schalen ermöglicht also dem Drucker die Gestaltung günstigster Rüstzeiten.A particularly favorable development of the invention consists in this. that the transfer drum and the turning cylinder are provided with removable shells forming the sheet guiding surfaces. When processing paper. especially of lighter papers. these bowls are used. Should stiffer bends, e.g. Cardboard, printed, the shells can be removed from the transfer drums and turning cylinders, because there is no need for sheet guiding elements. This has the advantage. that the outer surfaces of the shells, which like to give off color, do not need to be washed frequently. The optional use of these trays enables the printer to design the most favorable makeready times.

In der Beschreibung wird eine Ausführungsform der Erfindung anhand der Zeichnung erläutert. Die Figur zeigt ausschnittweise eine Kartonmaschine für einseitigen Mehrfarbendruck, umstellbar auf Schön-und Widerdruck.In the description, an embodiment of the invention is explained with reference to the drawing. The figure shows a section of a cardboard machine for single-sided multi-color printing, convertible to perfecting.

In der Figur sind Anleger und Ausleger nicht gezeigt. Auch das Druckwerk 1 ist nur teilweise dargestellt. Sein Druckzylinder 2 übergibt den Bogen 3 mittels seiner normalen Klemmgreifer 4 an die nachfolgende Umführtrommel 5. Druckzylinder 2 und Umführtrommet haben doppelten Durchmesser. Die Umführtrommel 5 ist in einem einfachen Grundgestell 6 gelagert, das außerdem zur Aufahme einer Speichertrommel 7 dient. Die Speichtertrommel 7 übernimmt mit ihren Hakengreiferreihen 8 den Bogen von der Umführtrommel 5. Mittels Spannsaugern 9 wird der übernommene Bogen 3 auf der Speichertrommel 7 gestrafft, so daß die Bogenhinterkante eine der ausgerichteten Vorderkante entsprechende, vorgegebene Lage einnimmt.The feeder and delivery arm are not shown in the figure. The printing unit 1 is also only partially shown. Its printing cylinder 2 transfers the sheet 3 by means of its normal clamping gripper 4 to the subsequent transfer drum 5. Printing cylinder 2 and transfer drum have double diameter. The transfer drum 5 is mounted in a simple base frame 6, which is also used to hold a storage drum 7. The storage drum 7 takes over the sheet from the transfer drum 5 with its hook gripper rows 8. The adopted sheet 3 is tightened on the storage drum 7 by means of suction cups 9, so that the sheet rear edge assumes a predetermined position corresponding to the aligned front edge.

Dem einfachen Grundgestell 6 folgt ein Druckwerk 10. Dieses besteht im wesentlichen aus dem Plattenzylinder 11 und Gummizylinder 12, beide mit einfachem Durchmesser, sowie aus dem Druck- 13 und dem Wendezylinder 14, die letzteren beiden mit doppeltem Durchmesser.The simple base frame 6 is followed by a printing unit 10. This essentially consists of the plate cylinder 11 and blanket cylinder 12, both with a single diameter, and from the printing cylinder 13 and the reversing cylinder 14, the latter two with a double diameter.

Der Wendezylinder 14 weist zwei sich diametral gegenüberliegende Reihen von Zangengreifern 15 auf. Fernder werden die Bogenführungsflächen des Wendezylinders 14 durch zwei abnehmbare Schalen 16 gebildet, die mit einem farbabgabefreudigen Aufzug versehen sind. Bei Verarbeitung von Papieren finden diese Schalen Anwendung. Sie müssen allerdings des öfteren gewaschen werden, damit deren Mantelflächen die farbabgabefreudige Eigenschaft in hinreichendem Maße beibehalten. Bei Verarbeitung von steiferen Papieren oder gar Karton werden die Schalen herausgenommen, da besondere Bogenführungsflächen nicht notwendig sind. Damit erübrigt sich natürlich auch das Waschen der Mantelflächen. Die Stillstandszeiten der Kartonmaschine verkürzen sich infolgedessen erheblich.The turning cylinder 14 has two diametrically opposite rows of pliers grippers 15. Furthermore, the sheet guiding surfaces of the turning cylinder 14 are formed by two removable shells 16 which are provided with an elevator which is easy to dispense of paint. These trays are used when processing paper. However, they have to be washed frequently so that their outer surfaces retain the paint-dispensing properties to a sufficient extent. When processing stiffer papers or even cardboard, the trays are removed because special sheet guiding surfaces are not necessary. Of course, this also eliminates the need to wash the jacket surfaces. As a result, the downtimes of the board machine are considerably reduced.

Der sich dem Wendezylinder 14 anschließende Druckzylinder 13 hat ebenfalls besonders ausgebildete Hakengreifer 8, genauso wie die Speichertrommel7, damit die Bogenübergabe von dem Wendezylinder 14 mittels der Zangengreifer 15 an den Druckzylinder 13 möglich ist. Bei Schöndruckeinstellung der Kartonmaschine übernehmen die Zangengreifer 15 von den Hakengreifern 8 der Speichertrommel 7 die Bogen an ihrer Vorderkante. Wird das Schön-und-Widerdruck-Verfahren benutzt. findet eine Bogenwendung statt, und die Zangengreifer erfassen die Hinterkante des auf der Speichertrommel7 7 am Wendezylinder 14 vorbeigeführten Bogens 3, der, wie oben schon erwähnt. durch die Spannsauger 9 gestrafft ist.The printing cylinder 13 adjoining the turning cylinder 14 likewise has specially designed hook grippers 8, just like the storage drum 7, so that the sheet transfer from the turning cylinder 14 to the printing cylinder 13 is possible by means of the pliers grippers 15. When the cardboard machine is set to face pressure, the pliers grippers 15 take over the sheets on their front edge from the hook grippers 8 of the storage drum 7. Is the perfecting process used? there is a turn of the sheet, and the pliers grippers grip the rear edge of the sheet 3 which is guided past the turning cylinder 14 on the storage drum 7, which, as already mentioned above, is tightened by the suction cups 9.

Grundgestell und Druckwerk 10 bilden zusammen die Wendeeinrichtung. Das sich Druckwerk 10 anschließende Druckwerk 17 entspricht in seinem Aufbau voll und ganz Druckwerk 1. Auch das sich anschliessende Druckwerk 18, das nur zu einem kleinen Teil dargestellt ist, hat den normalen Aufbau, der darin besteht, daß neben Plattenzylinder 11. Gummizylinder 12 und Druckzylinder 2 mit normalen Klemmgreiferreihen 4 eine Umführtrommel 19 mit dreifachem Durchmesser vorgesehen ist. Entsprechend sind symmetrisch auf dem Umfang der Umführtrommei 19 gleichmäßig verteilt drei Reihen normaie Klemmgreifer 4 angeordnet. Das sich an Druckwerk 17 anschließende Druckwerk 18 mit normalem Aufbau weist demzufolge auch eine Umführtrommel 19 mit dreifachem Durchmesser auf.Base frame and printing unit 10 together form the turning device. The printing unit 10 that follows the printing unit 17 corresponds in its structure completely to printing unit 1. Also the subsequent printing unit 18, which is only shown to a small extent, has the normal structure, which consists of the fact that in addition to plate cylinders 11. rubber cylinders 12 and Printing cylinder 2 with normal clamping gripper rows 4, a transfer drum 19 with a triple diameter is provided. Correspondingly, three rows of normaie clamp grippers 4 are arranged symmetrically on the circumference of the transfer drum 19. The printing unit 18, which is connected to the printing unit 17 and has a normal structure, consequently also has a transfer drum 19 with a triple diameter.

In der Maschineneinstellung für einseitigen Mehrfarbendruck kann also die Kartonmaschine sowohl auf Bögen als auch auf steifen Karton einen Vierfarbendruck aufbringen. Je nach Anzahl der Druckwerke und der Anordnung der Wendeeinrichtungen. bestehend aus Druckwerk 10 und Grundgestell 6, lassen sich zweiseitige Drucke verschiedenster Art herstellen. Beispielsweise könnte, falls die Kartonmaschine sechs Druckwerke besäße und das dritte Druckwerk entspräche Druckwerk 10, auf der einen Seite des Kartons ein Zweifarben- und auf der gegenüberliegenden Seite ein Vierfarbendruck aufgebracht werden.In the machine setting for single-sided multi-color printing, the board machine can apply four-color printing on sheets as well as on rigid cardboard. Depending on the number of printing units and the arrangement of the turning devices. consisting of printing unit 10 and base frame 6, two-sided prints of various types can be produced. For example, if the board machine had six printing units and the third printing unit corresponded to printing unit 10, a two-color print could be applied on one side of the box and a four-color print on the opposite side.

Der besondere Vorzug der beschriebenen erfindungsgemäßen Kartonmaschine ist der, daß sie sowohl Papiere als auch dickeren Karton passerhaltig und abschmierfrei im gesamten Formatbereicht selbst bei hohen Druckgeschwindigkeiten verarbeitet. Falls erforderlich, können natürlich auch zwei Wendeeinrichtungen vorgesehen werden.The particular advantage of the described cardboard machine according to the invention is that it processes both paper and thick cardboard in a register-free and lubrication-free manner in the entire format range even at high printing speeds. If necessary, two turning devices can of course also be provided.

TEILELISTEPARTS LIST

  • 1 Druckwerk1 printing unit
  • 2 Druckzylinder2 printing cylinders
  • 3 Bogen3 sheets
  • 4 Klemmgreifer4 clamp grippers
  • 5 Umführtrommel5 transfer drum
  • 6 Grundgestell6 base frame
  • 7 Speichertrommel7 storage drum
  • 8 Hakengreifer8 hook grippers
  • 9 Spannsauger9 suction cups
  • 10 Druckwerk10 printing unit
  • 11 Plattenzylinder11 plate cylinders
  • 12 Gummizylinder12 rubber cylinders
  • 13 Druckzylinder13 printing cylinders
  • 14 Wendezylinder14 turning cylinders
  • 15 Zangengreifer15 pliers grippers
  • 16 Schalen16 bowls
  • 17 Druckwerk17 printing unit
  • 18 Druckwerk18 printing unit
  • 19 Umführtrommel19 transfer drum

Claims (8)

1. Sheet-fed rotary printing machine having printing units (10, 17) arranged in tandem for processing both paper as well as cardboard with straight multicolor printing or printing/perfecting and including at least one turning device. each of the printing units consisting, in addition to a plate cylinder (11) and a blanket cylinder (12), of an impression cylinder (2. 13) and of a transfer drum (5, 19), each having double the diameter of the respective plate and blanket cylinders, characterized in that between two printing units (1 and 10) there is provided a simple base frame (6) merely for carrying a transfer drum (5) and a storage drum (7), each having a diameter double that of the respective plate and blanket cylinders. that in the printing unit (10) following the base frame (6) there ist provided, instead of a transfer drum. a turning cylinder (14) with rows of pincer grippers (15) offset 180° from one another so that the base frame (6) and the following printing unit (10) together constitute a turning device. that the impression cylinder (13) cooperating with the turning cylinder (14) is equipped with hook grippers (8) for taking over a sheet (3) from the pincer grippers (15). and that the impression and turning cylinders (2. 13. 14) and the transfer and storage drums (5, 7 and 19) conveying the sheet (3) with the printed surface facing inwardly provisions are made for a smudge-free transport of the sheets (3).
2. Sheet-fed rotary printing machine according to Claim 1, characterized in that the impressing surfaces of the impression cylinders (2, 13), arranged after the turning cylinder (14), are provided with cylindrical surfaces, e.g. in form of packings, having good ink transfer behaviour.
3. Sheet-fed rotary printing machine according to Claims 1 and 2, characterized in that the sheet-guiding surfaces of the transfer drums (5 and 19) and of the turning cylinder (14) are provided with unbroken cylindrical surfaces having good ink transfer behaviour.
4. Sheet-fed rotary printing machine according to Claims 1 and 2, characterized in that the sheet-guiding surfaces of the transfer drums (5 and 19) and of the turning cylinder (14) are provided with rods and bearing elements, e.g. small rolls.
5. Sheet-fed rotary printing machine according to Claims 1 and 2, characterized in that the transfer drums (5 and 19) and the turning cylinder (14) do not feature any sheet-supporting and sheet-guiding elements.
6. Sheet-fed rotary printing machine according to Claims 1 through 3, characterized in that transfer drums (5 and 19) and turning cylinder (14) are provided with removable shells (16) forming sheet-guiding surfaces.
7. Sheet-fed rotary printing machine according to one or more of Claims 1 through 6, characterized in that each printing unit (1, 17 and 18), except the printing unit (10) including the turning device. is provided with a transfer drum (19) having a diameter triple that of the plate and blanket cvlinders.
EP85105434A 1984-05-26 1985-05-03 Rotary printing machine for sheets having the printing units in line Expired EP0166128B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843419762 DE3419762A1 (en) 1984-05-26 1984-05-26 BOW ROTATION PRINTING MACHINE IN SERIES DESIGN OF PRINTING UNITS
DE3419762 1984-05-26

Publications (3)

Publication Number Publication Date
EP0166128A2 EP0166128A2 (en) 1986-01-02
EP0166128A3 EP0166128A3 (en) 1987-05-27
EP0166128B1 true EP0166128B1 (en) 1989-08-16

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ID=6236974

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Application Number Title Priority Date Filing Date
EP85105434A Expired EP0166128B1 (en) 1984-05-26 1985-05-03 Rotary printing machine for sheets having the printing units in line

Country Status (5)

Country Link
US (1) US4856426A (en)
EP (1) EP0166128B1 (en)
JP (1) JPS60255435A (en)
AU (1) AU579364B2 (en)
DE (2) DE3419762A1 (en)

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Also Published As

Publication number Publication date
JPS60255435A (en) 1985-12-17
DE3572328D1 (en) 1989-09-21
AU579364B2 (en) 1988-11-24
AU4135585A (en) 1985-11-28
US4856426A (en) 1989-08-15
DE3419762A1 (en) 1985-11-28
DE3419762C2 (en) 1991-02-14
EP0166128A2 (en) 1986-01-02
EP0166128A3 (en) 1987-05-27

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