EP2703161B1 - Duplex printing machine in a series configuration - Google Patents

Duplex printing machine in a series configuration Download PDF

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Publication number
EP2703161B1
EP2703161B1 EP13182025.0A EP13182025A EP2703161B1 EP 2703161 B1 EP2703161 B1 EP 2703161B1 EP 13182025 A EP13182025 A EP 13182025A EP 2703161 B1 EP2703161 B1 EP 2703161B1
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EP
European Patent Office
Prior art keywords
printing machine
duplex printing
machine according
printing
cylinder
Prior art date
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.)
Not-in-force
Application number
EP13182025.0A
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German (de)
French (fr)
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EP2703161A3 (en
EP2703161A2 (en
Inventor
Rolf Kündgen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Publication of EP2703161A2 publication Critical patent/EP2703161A2/en
Publication of EP2703161A3 publication Critical patent/EP2703161A3/en
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Classifications

    • 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
    • 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
    • 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

Definitions

  • the invention relates to a sheet-fed printing machine for two-sided digital printing.
  • the Print Media Handbook Helmut Kipphan, page 715, Figure 5.1 - 10, describes an E-Print 1000, indigo printing machine for double-sided digital printing. It is hereby provided that a printed on a printing cylinder by means of an intermediate cylinder multi-color sheet is turned by means of a turning pocket and is fed back to the printing cylinder, on which receives this his multicolor print on the back.
  • a printing press which may have digital printing units and can be switched by activating or deactivating the return transport between perfecting.
  • EP 0 924 091 A1 is a digital sheet-fed printing machine described in which the sheets pass on a conveyor belt four printing units and then a sheet diverter, from which the sheets can be passed via a return transport path in a turning pocket. A sheet fed into the reversible pocket is transported back to the top on the conveyor belt in order to be able to print on the reverse side.
  • a multicolor printing machine having printing units which may be electrophotographic printing units or inkjet based printing units.
  • the printing machine comprises a first transport unit, which forms a simplex path, and a second transport unit, which forms a duplex path with a sheet turning unit.
  • EP 1 386 865 A1 is a digital printing machine with a device for providing sheets for one-sided or double-sided printing described.
  • the device comprises a conveyor belt which passes through the printing unit.
  • the invention has for its object to provide a duplex printing machine in a row, in which at least two printing units are arranged one behind the other.
  • a douplex printing press 1 has in the embodiment according to FIG. 1 three successively arranged printing units 2, 3, 4. Each printing unit 2, 3, 4 prints a color and in each case has a double-sized blanket cylinder 6 carrying the printed image, a device producing the printed image digitally, for example an inkjet head 7, a first dryer 8 and a second dryer 9.
  • the blanket cylinder 6 cooperates with a triple-sized three gripper rows having printing cylinder 10.1 together on which the sheet receives the printed image from the blanket cylinder 6.
  • a feeder 11 leads to a single-speed, single-size feed cylinder 12 upstream of the first printing unit 2 with a gripper row to a bow, which is supplied from the last printing unit 4 a boom 13.
  • a feeder 11 leads to a single-speed, single-size feed cylinder 12 upstream of the first printing unit 2 with a gripper row to a bow, which is supplied from the last printing unit 4 a boom 13.
  • each two parallel transfer drums 14, 16 and 17, 18 are arranged.
  • a turning device 19 arranged on the first printing unit 2 has a storage drum 21, a dynamically driven turning gripper 22 and two simply large transfer drums 23, 24 arranged one behind the other for the return of the sheet to the first impression cylinder 2.
  • a fed from the feeder 11 by means of the feed cylinder 12 to the impression cylinder 10.1 of the first printing unit 2 sheet is first printed monochrome in straight printing. Then the sheet is transferred by means of a transfer drum 14 to the printing cylinder 10.2 of the second printing unit 3, where the sheet receives a second printed image in a second color. Then the two-color printed sheet is fed by means of the transfer drum 17 to the printing cylinder 10.3 of the third printing unit 4 and with a third printed image in fair print provided.
  • the sheet is printed only in two printing units or optionally in four or more printing units.
  • the sheet After printing in Perfecting the sheet can be unilaterally printed on one side of the boom 13 or fed via the transfer drum 18 the impression cylinder 10.2 of the second printing unit 3 and the transfer drum 16 to the impression cylinder 10.1 of the first printing unit 2, which is provided with the turning device 19.
  • This has a double-sized storage drum 21, from which a trailing edge of the sheet is detected by means of an oscillating drivable turning gripper 22 and is transferred to the transfer drums 23, 24, which turned the bow of a three gripper rows of the printing cylinder 10.1 perform.
  • the douplex printing machine 1 can be operated in reverse printing mode at half the production speed with respect to the perfecting mode. To compensate for different formats of the turning gripper 22 is dynamically driven. A small length format is thus transported slower by the reversing gripper 22, as a larger length format.
  • the turning device 19 is arranged on the printing cylinder 10.3 of the last printing unit 3.
  • a douplex press 1 according to FIG. 3 a turning device 29.
  • This consists essentially of a storage drum 32 and a turning drum 35 which engages the sheet at its trailing edge and turns a subsequent transfer drum 28 passes, from where it takes over a chain gripper system 31 and transfers to a transfer drum 33, which the sheet by means of another transfer drum 34th back to the printing cylinder 10.3 of the third printing unit. From there it is fed by means of the transfer drum 18 to the printing cylinder 10.2 and the transfer drum 16 to the first printing cylinder 10.1.
  • the chain gripper system 31 has a Phasenverstellgetriebe 30 for elongation of the transport path of the sheet.
  • FIG. 4 shows a douplex printing machine 1 with triple-size impression cylinder 10.1, 10.2, 10.3 and triple-large transfer drums 36 between the printing units 2, 3, 4.
  • a turning device 19 is associated with the last impression cylinder 10.3 and conveys the sheet back to the first printing cylinder 10.1.
  • the first printing cylinder 10.1 is assigned a simply large storage drum 37, which stores the sheet and, after one revolution, transfers it to a subsequent gripper row of the printing cylinder 10.1.

Landscapes

  • Ink Jet (AREA)
  • Printers Characterized By Their Purpose (AREA)

Description

Die Erfindung bezieht sich auf eine Bogendruckmaschine für den beidseitigen Digitaldruck.The invention relates to a sheet-fed printing machine for two-sided digital printing.

Im Handbuch der Printmedien, Helmut Kipphan, Seite 715, Abbildung 5.1 - 10 ist eine E-Print 1000, Indigodruckmaschine für den beidseitigen Digitaldruck beschrieben. Es ist hierbei vorgesehen, dass ein auf einem Druckzylinder mittels eines Zwischenzylinders mehrfarbig bedruckten Bogen mittels einer Wendetasche gewendet wird und an den Druckzylinder zurückgefördert wird, auf welchem dieser seinen mehrfarbigen Druck auf der Rückseite erhält.The Print Media Handbook, Helmut Kipphan, page 715, Figure 5.1 - 10, describes an E-Print 1000, indigo printing machine for double-sided digital printing. It is hereby provided that a printed on a printing cylinder by means of an intermediate cylinder multi-color sheet is turned by means of a turning pocket and is fed back to the printing cylinder, on which receives this his multicolor print on the back.

In DE 295 21 986 U1 ist eine Druckmaschine beschrieben, die digitale Druckwerke aufweisen kann und durch Aktivieren bzw. Deaktivieren des Rücktransports zwischen Schön- und Widerdruck umschaltbar ist.In DE 295 21 986 U1 is described a printing press, which may have digital printing units and can be switched by activating or deactivating the return transport between perfecting.

In EP 0 924 091 A1 ist eine digitale Bogendruckmaschine beschrieben, bei welcher die Bogen auf einem Transportband vier Druckwerke passieren und danach eine Bogenweiche, von der die Bogen über einen Rücktransportweg in eine Wendetasche geleitet werden können. Ein in die Wendetasche geleiteter Bogen wird mit der Rückseite nach oben wieder auf das Transportband befördert, um die Rückseite bedrucken zu können.In EP 0 924 091 A1 is a digital sheet-fed printing machine described in which the sheets pass on a conveyor belt four printing units and then a sheet diverter, from which the sheets can be passed via a return transport path in a turning pocket. A sheet fed into the reversible pocket is transported back to the top on the conveyor belt in order to be able to print on the reverse side.

In DE 10 2008 024 216 A1 ist eine Mehrfarbendruckmaschine mit Druckwerken beschrieben, die elektrofotografische Druckwerke oder auf Tintenstrahltechnik basierende Druckwerke sein können. Die Druckmaschine umfasst eine erste Transporteinheit, die einen Simplexpfad bildet, und eine zweite Transporteinheit, die einen Duplexpfad mit einer Bogenwendeeinheit bildet.In DE 10 2008 024 216 A1 there is described a multicolor printing machine having printing units which may be electrophotographic printing units or inkjet based printing units. The printing machine comprises a first transport unit, which forms a simplex path, and a second transport unit, which forms a duplex path with a sheet turning unit.

In EP 1 386 865 A1 ist eine digitale Druckmaschine mit einer Vorrichtung zur Bereitstellung von Bogen zur einseitigen oder doppelseitigen Bedruckung beschrieben. Die Vorrichtung umfasst ein Transportband, welches die Druckeinheit durchläuft.In EP 1 386 865 A1 is a digital printing machine with a device for providing sheets for one-sided or double-sided printing described. The device comprises a conveyor belt which passes through the printing unit.

Der Erfindung liegt die Aufgabe zugrunde eine Duplex-Druckmaschine in Reihenbauweise zu schaffen, bei welcher mindestens zwei Druckwerke hintereinander angeordnet sind.The invention has for its object to provide a duplex printing machine in a row, in which at least two printing units are arranged one behind the other.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.The object is achieved by the features of claim 1.

Die Vorteile an der Erfindung sind in den Unteransprüchen beschrieben.The advantages of the invention are described in the subclaims.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden beschrieben. Es zeigten:

  • Figur 1: Eine Duplex-Druckmaschine im Schnitt in schematischer Darstellung mit einem Schwinggreifer zum Wenden der Bögen.
  • Figur 2: Eine Duplex-Druckmaschine gemäß Figur 1 mit einer Anordnung des Wendegreifers an einem dem Ausleger vorgeordneten Druckwerkszylinder.
  • Figur 3: Ein drittes Ausführungsbeispiel mit einer phasenverstellbaren Transportkette zum Rücktransport der Bögen.
  • Figur 4: Ein zweites Ausführungsbeispiel mit dreifach großen Druckzylindern und Übergabetrommeln und einer einfach großen Transporttrommel zum Wechseln der Greiferreihe des Druckzylinders.
Embodiments of the invention are illustrated in the drawings and will be described below. It showed:
  • FIG. 1 : A duplex printing machine in section in schematic representation with a swinging gripper for turning the sheets.
  • FIG. 2 : A duplex printing machine according to FIG. 1 with an arrangement of the turning gripper on a printing unit cylinder upstream of the boom.
  • FIG. 3 A third embodiment with a phase-adjustable transport chain for the return transport of the sheets.
  • FIG. 4 : A second embodiment with triple-sized printing cylinders and transfer drums and a simply large transport drum for changing the gripper row of the printing cylinder.

Eine Douplex-Druckmaschinen 1 weist im Ausführungsbeispiel gemäß Figur 1 drei hintereinander angeordnete Druckwerke 2, 3, 4 auf. Jedes Druckwerk 2, 3, 4 verdruckt eine Farbe und weist jeweils einen das Druckbild tragenden zweifach großen Gummizylinder 6, eine das Druckbild digital erzeugende Vorrichtung, z.B. einen Inkjetkopf 7, einen ersten Trockner 8 und einen zweiten Trockner 9 auf. Der Gummizylinder 6 wirkt mit einem dreifach großen drei Greiferreihen aufweisenden Druckzylinder 10.1 zusammen auf welchem der Bogen das Druckbild vom Gummizylinder 6 erhält.A douplex printing press 1 has in the embodiment according to FIG. 1 three successively arranged printing units 2, 3, 4. Each printing unit 2, 3, 4 prints a color and in each case has a double-sized blanket cylinder 6 carrying the printed image, a device producing the printed image digitally, for example an inkjet head 7, a first dryer 8 and a second dryer 9. The blanket cylinder 6 cooperates with a triple-sized three gripper rows having printing cylinder 10.1 together on which the sheet receives the printed image from the blanket cylinder 6.

Ein Anleger 11 führt einem dem ersten Druckwerk 2 vorgeordneten eintourigen, einfachgroßen Zuführzylinder 12 mit einer Greiferreihe einen Bogen zu, welcher vom letzten Druckwerk 4 einem Ausleger 13 zugeführt wird. Zwischen den Druckzylindern 10.2, 10.3, 10.4 der Druckwerke 2, 3, 4 sind jeweils zwei parallel angeordnete Übergabetrommeln 14, 16 und 17, 18 angeordnet.A feeder 11 leads to a single-speed, single-size feed cylinder 12 upstream of the first printing unit 2 with a gripper row to a bow, which is supplied from the last printing unit 4 a boom 13. Between the printing cylinders 10.2, 10.3, 10.4 of the printing units 2, 3, 4 each two parallel transfer drums 14, 16 and 17, 18 are arranged.

Eine am ersten Druckwerk 2 angeordnete Wendeeinrichtung 19 weist eine Speichertrommel 21, einen dynamisch antreibbaren Wendegreifer 22 und zwei hintereinander angeordnete einfach große Übergabetrommeln 23, 24 zum Rücktransport des Bogens an den ersten Druckzylinder 2 auf.A turning device 19 arranged on the first printing unit 2 has a storage drum 21, a dynamically driven turning gripper 22 and two simply large transfer drums 23, 24 arranged one behind the other for the return of the sheet to the first impression cylinder 2.

Ein vom Anleger 11 mittels des Zuführzylinders 12 dem Druckzylinder 10.1 des ersten Druckwerks 2 zugeführter Bogen wird zunächst im Schöndruck einfarbig bedruckt. Daraufhin wird der Bogen mittels einer Übergabetrommel 14 an den Druckzylinder 10.2 des zweiten Druckwerks 3 übergeben, wo der Bogen ein zweites Druckbild in einer zweiten Farbe erhält. Daraufhin wird der zweifarbig bedruckte Bogen mittels der Übergabetrommel 17 dem Druckzylinder 10.3 des dritten Druckwerks 4 zugeführt und mit einem dritten Druckbild im Schöndruck versehen. Selbstverständlich kann es auch vorgesehen sein, dass der Bogen nur in zwei Druckwerken bedruckt wird oder wahlweise auch in vier oder mehr Druckwerken.A fed from the feeder 11 by means of the feed cylinder 12 to the impression cylinder 10.1 of the first printing unit 2 sheet is first printed monochrome in straight printing. Then the sheet is transferred by means of a transfer drum 14 to the printing cylinder 10.2 of the second printing unit 3, where the sheet receives a second printed image in a second color. Then the two-color printed sheet is fed by means of the transfer drum 17 to the printing cylinder 10.3 of the third printing unit 4 and with a third printed image in fair print provided. Of course, it can also be provided that the sheet is printed only in two printing units or optionally in four or more printing units.

Nach dem Bedrucken im Schöndruck kann der Bogen einseitig mehrfarbig bedruckt dem Ausleger 13 zugeführt werden oder über die Übergabetrommel 18 dem Druckzylinder 10.2 des zweiten Druckwerks 3 und die Übergabetrommel 16 dem Druckzylinder 10.1 des ersten Druckwerks 2 zugeführt werden, welcher mit der Wendeeinrichtung 19 versehen ist. Diese weist eine doppelt große Speichertrommel 21 auf, von welcher eine Hinterkante des Bogens mittels eines oszillierend antreibbaren Wendegreifers 22 erfasst wird und an die Übergabetrommeln 23, 24 übergeben wird, welche den Bogen gewendet einer drei Greiferreihen des Druckzylinders 10.1 zuführen.After printing in Perfecting the sheet can be unilaterally printed on one side of the boom 13 or fed via the transfer drum 18 the impression cylinder 10.2 of the second printing unit 3 and the transfer drum 16 to the impression cylinder 10.1 of the first printing unit 2, which is provided with the turning device 19. This has a double-sized storage drum 21, from which a trailing edge of the sheet is detected by means of an oscillating drivable turning gripper 22 and is transferred to the transfer drums 23, 24, which turned the bow of a three gripper rows of the printing cylinder 10.1 perform.

Beim Passieren Bogenzufuhrstelle zwischen Zuführzylinder 12 und Druckzylinder 6 wird die Zufuhr vom Anleger 11 unterbrochen, so dass eine Kollision mit einem neuen Bogen vermieden wird. Die Douplex-Druckmaschine 1 lässt sich im Widerdruckmodus mit halber Produktionsgeschwindigkeit gegenüber dem Schöndruckmodus betreiben. Zum Ausgleich von unterschiedlichen Formaten ist der Wendegreifer 22 dynamisch antreibbar. Ein kleines Längenformat wird somit vom Wendegreifer 22 langsamer transportiert, als ein größeres Längenformat.When passing sheet feed point between feed cylinder 12 and pressure cylinder 6, the feed from the feeder 11 is interrupted, so that a collision with a new sheet is avoided. The douplex printing machine 1 can be operated in reverse printing mode at half the production speed with respect to the perfecting mode. To compensate for different formats of the turning gripper 22 is dynamically driven. A small length format is thus transported slower by the reversing gripper 22, as a larger length format.

Bei einer Douplex-Druckmaschine 1 gemäß Figur 2 ist die Wendeeinrichtung 19 am Druckzylinder 10.3 des letzten Druckwerks 3 angeordnet.In a douplex printing machine 1 according to FIG. 2 the turning device 19 is arranged on the printing cylinder 10.3 of the last printing unit 3.

Eine Douplex-Druckmaschine 1 weist gemäß Figur 3 eine Wendeeinrichtung 29 auf. Diese besteht im Wesentlichen aus einer Speichertrommel 32 und einer Wendetrommel 35, die den Bogen an seiner Hinterkante ergreift und gewendet einer nachfolgenden Übergabetrommel 28 übergibt, von wo sie ein Kettengreifersystem 31 übernimmt und an eine Übergabetrommel 33 übergibt, welche den Bogen mittels einer weiteren Übergabetrommel 34 an den Druckzylinder 10.3 des dritten Druckwerks zurückfördert. Von dort wird dieser mittels der Übergabetrommel 18 dem Druckzylinder 10.2 und der Übergabetrommel 16 dem ersten Druckzylinder 10.1 zugeführt.A douplex press 1 according to FIG. 3 a turning device 29. This consists essentially of a storage drum 32 and a turning drum 35 which engages the sheet at its trailing edge and turns a subsequent transfer drum 28 passes, from where it takes over a chain gripper system 31 and transfers to a transfer drum 33, which the sheet by means of another transfer drum 34th back to the printing cylinder 10.3 of the third printing unit. From there it is fed by means of the transfer drum 18 to the printing cylinder 10.2 and the transfer drum 16 to the first printing cylinder 10.1.

Das Kettengreifersystem 31 weist ein Phasenverstellgetriebe 30 zur Längung der Transportbahn des Bogens auf. Durch diese Maßnahme können Bogen unterschiedlicher Längenformate verarbeitet werden. Hierbei werden Bogenformate mit einer kleineren Länge langsamer transportier als Bogenformate mit einer größeren Länge.The chain gripper system 31 has a Phasenverstellgetriebe 30 for elongation of the transport path of the sheet. By this measure, sheets of different length formats can be processed. Here, sheet formats with a smaller length are transported slower than sheet formats with a larger length.

Die Figur 4 zeigt eine Douplex-Druckmaschine 1 mit dreifach großem Druckzylinder 10.1, 10.2, 10.3 und dreifach großen Übergabetrommeln 36 zwischen den Druckwerken 2, 3, 4.The FIG. 4 shows a douplex printing machine 1 with triple-size impression cylinder 10.1, 10.2, 10.3 and triple-large transfer drums 36 between the printing units 2, 3, 4.

Eine Wendeeinrichtung 19 ist dem letzen Druckzylinder 10.3 zugeordnet und fördert den Bogen zurück zum ersten Druckzylinder 10.1. Um eine Kollision mit einem zuzuführenden Bogen zu vermeiden, ist dem ersten Druckzylinder 10.1 eine einfach große Speichertrommel 37 zugeordnet, welche den Bogen speichert und nach einer Umdrehung an eine nachfolgende Greiferreihe des Druckzylinders 10.1 übergibt.A turning device 19 is associated with the last impression cylinder 10.3 and conveys the sheet back to the first printing cylinder 10.1. In order to avoid a collision with a sheet to be supplied, the first printing cylinder 10.1 is assigned a simply large storage drum 37, which stores the sheet and, after one revolution, transfers it to a subsequent gripper row of the printing cylinder 10.1.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Douplex-DruckmaschineDouplex printing press
22
Druckwerkprinting unit
33
Druckwerkprinting unit
44
Druckwerkprinting unit
66
Gummizylinderrubber cylinder
77
Inkjetkopfinkjet head
88th
Trocknerdryer
99
Trocknerdryer
10.110.1
Druckzylinderpressure cylinder
10.210.2
Druckzylinderpressure cylinder
10.310.3
Druckzylinderpressure cylinder
1111
Anlegerinvestor
1212
Zuführzylinderfeed cylinder
1313
Auslegerboom
1414
ÜbergabetrommelTransfer drum
1616
ÜbergabetrommelTransfer drum
1717
ÜbergabetrommelTransfer drum
1818
ÜbergabetrommelTransfer drum
1919
Wendeeinrichtungturning device
2121
Speichertrommelstorage drum
2222
Wendegreiferturning gripper
2323
ÜbergabetrommelTransfer drum
2424
ÜbergabetrommelTransfer drum
2828
ÜbergabetrommelTransfer drum
2929
Wendeeinrichtungturning device
3030
PhasenverstellgetriebePhasenverstellgetriebe
3131
KettengreifersystemChain gripper system
3232
Speichertrommelstorage drum
3333
ÜbergabetrommelTransfer drum
3434
ÜbergabetrommelTransfer drum
3535
Wendetrommelbeater
3636
Übergabetrommel (dreifach groß)Transfer drum (three times larger)
3737
Speichertrommelstorage drum
3939
Wendeeinrichtungturning device

Claims (9)

  1. Duplex printing machine having a minimum of two printing units (2, 3, 4) and a digitally controllable imaging unit (7) associated with every printing unit, wherein every imaging unit has an impression cylinder (10.1, 10.2, 10.3) and wherein the printing units (2, 3, 4) are disposed behind one another and have a reversing device (19; 29) and a returning device for returning the reversed sheet to the first impression cylinder (10.1),
    characterized in
    that triple-size transfer drums (36) having three rows of grippers for transporting sheets or two respective transfer drums (14, 16, 17, 18) disposed to be parallel are disposed between the impression cylinders ( 10.2, 10.3, 10.4).
  2. Duplex printing machine according to claim 1,
    characterized in
    that the impression cylinders (10.1, 10.2, 10.3) are triple-diameter cylinders and have three rows of grippers for transporting sheets.
  3. Duplex printing machine according to claim 1or 2,
    characterized in
    that blanket cylinders (6) that are provided are double-diameter cylinders.
  4. Duplex printing machine according to claims 1-3,
    characterized in
    that the transfer drums (14, 16, 17, 18) disposed between the impression cylinders (10,1, 10.2, 10.3) are single-diameter drums, each having one row of grippers for transporting sheets.
  5. Duplex printing machine according to any one of claims 1-4,
    characterized in
    that the reversing device (19, 29) has a dynamically drivable oscillating reversing gripper (22).
  6. Duplex printing machine according to any one of claims 1-5,
    characterized in
    that the reversing device (29) has a chain gripper system (31) with an elongatable chain path.
  7. Duplex printing machine according to claim 6,
    characterized in
    that phase adjustment devices (30) are provided to elongate the chain path.
  8. Duplex printing machine according to claim 1.
    characterized in
    that a storage drum (37) for transferring the reversed sheet from a row of grippers of the impression cylinder (10.1) to a following row of grippers of the impression cylinder (10.1) is provided.
  9. Duplex printing machine according to any one of the preceding claims,
    characterized in
    that the imaging unit (7) includes an inkjet head (7).
EP13182025.0A 2012-09-04 2013-08-28 Duplex printing machine in a series configuration Not-in-force EP2703161B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012017436.5A DE102012017436A1 (en) 2012-09-04 2012-09-04 Douplex printing machine in row construction

Publications (3)

Publication Number Publication Date
EP2703161A2 EP2703161A2 (en) 2014-03-05
EP2703161A3 EP2703161A3 (en) 2015-10-07
EP2703161B1 true EP2703161B1 (en) 2016-10-26

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EP13182025.0A Not-in-force EP2703161B1 (en) 2012-09-04 2013-08-28 Duplex printing machine in a series configuration

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DE (1) DE102012017436A1 (en)

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WO2019072612A1 (en) 2017-10-13 2019-04-18 Koenig & Bauer Ag Sheet-fed printing press
DE102017218399B4 (en) 2017-10-13 2023-04-27 Koenig & Bauer Ag sheetfed press
DE102017218401A1 (en) 2017-10-13 2019-04-18 Koenig & Bauer Ag Sheetfed

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