EP0509414A1 - Printing unit for a rotary printing press - Google Patents

Printing unit for a rotary printing press Download PDF

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Publication number
EP0509414A1
EP0509414A1 EP92106227A EP92106227A EP0509414A1 EP 0509414 A1 EP0509414 A1 EP 0509414A1 EP 92106227 A EP92106227 A EP 92106227A EP 92106227 A EP92106227 A EP 92106227A EP 0509414 A1 EP0509414 A1 EP 0509414A1
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EP
European Patent Office
Prior art keywords
cylinder
printing
forme
inking roller
forme 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.)
Granted
Application number
EP92106227A
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German (de)
French (fr)
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EP0509414B1 (en
Inventor
Anton Weis
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.)
Koenig and Bauer AG
Original Assignee
Albert Frankenthal AG
Koenig and Bauer Albert AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Albert Frankenthal AG, Koenig and Bauer Albert AG filed Critical Albert Frankenthal AG
Publication of EP0509414A1 publication Critical patent/EP0509414A1/en
Application granted granted Critical
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/46Printing units for inserting latest news
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/24Cylinder-tripping devices; Cylinder-impression adjustments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F31/00Inking arrangements or devices
    • B41F31/30Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/301Devices for tripping and adjusting form rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F31/00Inking arrangements or devices
    • B41F31/30Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/302Devices for tripping inking devices as a whole
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41PINDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00Printing machines of special types or for particular purposes
    • B41P2217/10Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/13Machines with double or multiple printing units for "flying" printing plates exchange

Definitions

  • the invention relates to a printing unit for performing a flying printing plate change according to the preamble of patent claim 1.
  • DE-PS 20 33 836 a printing unit for performing a flying printing plate change has become known.
  • the impression cylinder is pivotally arranged and can be brought into contact with two plate cylinders.
  • the paper web wraps around the impression cylinder, and when pivoted this has the consequence that the paper web tension is influenced.
  • DE 33 13 219 C2 shows a printing unit for performing the flying printing plate change, in which a single inking roller is arranged, against which two plate cylinders can be adjusted.
  • the adjusting device is designed in the form of a carriage in that both forme cylinders are rotatably and driveably mounted. By moving the carriage, only one forme cylinder can be placed against the inking roller. The second forme cylinder is then inevitably switched off from the inking roller.
  • the invention has for its object to provide a printing unit for performing a flying printing plate change in a printing unit of a rotary printing press.
  • a printing unit for performing a flying printing plate change in a printing unit of a rotary printing press.
  • the advantages that can be achieved with the invention are, in particular, that the printing on / off can take place via the impression cylinder, whereby register changes hardly take place as a result. It is possible to use formally variable form cylinders. It is possible to use a simple eccentric to adjust the contact pressure of the impression cylinder against the forme cylinder. In addition, it is possible with simple means to adjust the contact pressure of the inking roller against the forme cylinder.
  • side frames 1, 2 of a printing unit are a counter-pressure cylinder 3, two deflection rollers in a known manner 4 stored.
  • two horizontal cutouts 7, 8, 9, 11 are incorporated.
  • a dovetail guide slidably and lockable in an optional position.
  • a first forme cylinder 22 is mounted in bearings in the sliding blocks 19 and 21.
  • the sliding blocks 17, 19, 18, 21 are each against a stop, not shown, for. B. pressed by means of a hydraulic cylinder.
  • a center distance a between the first and second forme cylinders 22, 23 is so large that, depending on the position, only one forme cylinder, either the first forme cylinder 22 or the second forme cylinder 23, both with the impression cylinder 3 and with an inking roller 27 in Can be brought into contact.
  • the inking roller 27 is arranged with an ink pan 33 and doctor blade 34 in a pivotable rocker 50.
  • the rocker 50 is arranged between the side frames 1, 2 and stored in them.
  • the inking roller 27 can be driven in a known manner via the main drive of the machine or via its own drive motor 57.
  • the inking roller 27 is mounted with its cylinder journals 28, 29 below the impression cylinder 3 and the two axes of rotation of the forme cylinders 22, 23 in a rocker 50.
  • the rocker 50, and thus the inking roller 27, is pivotable about a pivot axis 72 parallel to the axis of rotation of the inking roller 27, which passes through the centers of two pins 12, 13 in the side frames 1, 2, below the axis of rotation 71 of the inking roller 27 and between the side frames 1, 2 is mounted.
  • a double-acting hydraulic cylinder 40 is provided, the fork of which is attached to the inside of the side frame 1 or 2.
  • a distance of the axis of rotation 71 of the inking roller 27 from the center of the pin 12, 13 is chosen so that the jacket of the inking roller 27 can be brought into contact with the jacket of the forme cylinders 22, 23 alternately.
  • a center distance b between the impression cylinder 3 and the axes of rotation of the forme cylinders 22, 23 is chosen so that optionally in a "pressure-on position" of the impression cylinder 3 this can be brought into contact with both forme cylinders 22, 23.
  • the cylinder pins 28, 29 are mounted in eccentric bushes 14, 16, which in turn are mounted in holes in the side frames 1, 2.
  • the eccentric bushes 14, 16 each have a lever arm 58, 59, each of which is non-positively connected to a double-acting hydraulic cylinder 60, 61.
  • These hydraulic cylinders 60, 61 are acted on simultaneously so that the impression cylinder 3 either against the right forme cylinder 23 or the left forme cylinder 22 is pressed and so the paper web 42 presses against them.
  • An adjustable stop is attached to the left and right of the lever arms 58, 59; they serve to limit the pivoting angle of the impression cylinder 3.
  • the inking roller 27 can be designed as a hard, screened roller (anilox roller). In this case, it is immersed, for example, in an ink pan 33 which is coated with a flexographic printing ink or another thin liquid printing ink, e.g. B. low viscosity high pressure paint is filled. Excess printing ink is scraped off the ink application roller in a known manner by means of a doctor blade 34.
  • anilox roller anilox roller
  • the inking roller 27 has a hard jacket, such as when using a rastered roller, soft printing formes 36, 37 must be clamped onto the forme cylinders 22, 23.
  • the inking roller 27 can, however, also be designed as the last roller 38 of an offset printing ink unit (FIG. 7) or as the last roller 39 of a high pressure inking unit (FIG. 8).
  • the rollers 38, 39 must have an elastic rubber coating.
  • the forme cylinders 22, 23 with so-called hard pressure plates, i. H. Offset or high-pressure plates must be occupied. Plate clamping devices for the forme cylinders 22, 23 are generally known and are therefore not described.
  • a coating 41 of the impression cylinder 3 must be soft or hard.
  • Such impression cylinders 3 are generally known.
  • Peripheral speeds of impression cylinder 3, Forme cylinder 22, 23 and inking roller 27 must be the same size.
  • the diameter of the inking roller 27 is preferably as large as a diameter of the impression cylinder 3.
  • the diameters of the forme cylinders 22, 23 can even be variable, but can also have the same diameter as the inking roller 27.
  • the inking units e.g. anilox inking unit, gravure inking unit, offset inking unit or high-pressure inking unit
  • the rollers can be driven by a coupling with an axis offset, so-called Schmitt coupling, from the main drive of the machine.
  • a paper web 42 is printed on one side in a printing nip between impression cylinder 3 and forme cylinder 22 or forme cylinder 23.
  • Spur gear 43 is designed as a double gear. A power drive from a main drive takes place on spur gear 44. The outer gear of the spur gear 43 meshes with the spur gear 47 which drives the inking roller 27. The inner gear of the spur gear 43 is in engagement with the spur gear 44 for the impression cylinder 3. The spur gear 44 drives the spur gear 46 of the forme cylinder 22.
  • the plate changing process is the same for both forme cylinders 22, 23. Therefore, for the sake of simplicity, the description of the processes during "printing on” and “printing off” and plate changing on the forme cylinder 23 is limited.
  • the impression cylinder 3 and the only inking roller 27, which cooperate with one of the two forme cylinders 22, 23, must be moved away from the forme cylinder 22. This is done by simultaneously moving the sliding blocks 18 and 21, so that the forme cylinder, for. B. form cylinder 23, of the inking roller 27 and the impression cylinder 3 are free.
  • the forme cylinder 23 is then stopped. Stopping takes place in that the clutch 54 is switched off on the spur gear side and the clutch 53 is switched in on the DC motor side, so that the forme cylinder 23 is now coupled with the DC motor 56 running at a speed corresponding to the speed of the forme cylinder 23. Now the direct current motor 56 and thus the countercurrent principle the forme cylinder 23 braked to a standstill and then switched off.
  • the sliding blocks 18, 21 and 17, 19 are moved by the simultaneous loading of the double-acting hydraulic cylinders 15, 20 and 5, 10, their counter bearings on the inside of the side frames 1, 2 and their clevises on the front side 24, 26 of the Sliding blocks 18, 21 and 17, 19 are attached. In the "pressure-on position” and in the “waiting position” the sliding blocks 17, 19, 18, 21 are always pressed against adjustable stops 67, 68 and 69, 70.
  • the forme cylinder 23 covered with a new printing forme 37 is held in its position by means of the two hydraulic cylinders 15, 20 acting between sliding blocks 18, 21 - that is, it stops at the stops 67, 68. In this position there is now a gap between 1-2 mm between the forme cylinder 23 and inking roller 27 and between and the impression cylinder 3.
  • the clutch 53 is then switched to the electric drive 56, but the clutch 54 to the spur gear 43 remains open. Then the electric drive 56 is activated and its speed increased until the forme cylinder z. B. 23 and impression cylinder 3 have the same peripheral speed.
  • the clutch 54 is switched between the forme cylinder 23 and the spur gear 43 and the coupling connection 53 between the forme cylinder 23 and the electric drive 56 is released, ie the forme cylinder 23 is driven by the main drive of the machine.
  • the hydraulic cylinders 40, 60, 61 are acted on so that the impression cylinder 3 and the inking roller 27 are moved and pressed onto the forme cylinder 23 ("Print on position").
  • the inking roller 27 dyes a printing form 37 of the forme cylinder 23.
  • the paper web 42 is now printed between the forme cylinder 23 and the impression cylinder 3.
  • the other forme cylinder 22 is inevitably in a "print-off position", i. H. brought out of contact by the impression cylinder 3 and the inking roller 27, uncoupled from the spur gear 46, then coupled to the electric motor 55 rotating at an appropriate speed and then braked to zero speed by the electrical braking method described above.
  • the ink fountain roller 27 can be driven via the spur gear 47 driven by the main drive.
  • An overrunning clutch is interposed between the spur gear 47 and an electric motor 57 fixed to the side frame. This enables the ink fountain roller 27 to be moved anyway when the main drive is at a standstill.
  • Means for synchronizing engine speeds to cylinder speeds are generally known, e.g. B. with shaftless drive of printing units or synchronization of roller stars to printing units or the peripheral speed of the new roll to the speed of the running web, therefore their description is omitted.
  • the invention is not limited to gravure printing (FIG. 6), as can be seen from FIG. 6 and FIG. 8, the invention can also be used in flexographic, offset and letterpress printing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

Eine Druckeinheit zur Durchführung eines fliegenden Druckplattenwechsels weist einen Gegendruckzylinder (3), einen ersten (22), einen zweiten Formzylinder (23) und eine Farbauftragswalze (27) auf, die wahlweise mit dem ersten (22) oder dem zweiten Formzylinder (23) in Berührung gebracht werden kann. <IMAGE>A printing unit for carrying out a flying printing plate change has an impression cylinder (3), a first (22), a second forme cylinder (23) and an inking roller (27), which optionally with the first (22) or the second forme cylinder (23) in Can be brought into contact. <IMAGE>

Description

Die Erfindung betrifft eine Druckeinheit zur Durchführung eines fliegenden Druckplattenwechsels gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a printing unit for performing a flying printing plate change according to the preamble of patent claim 1.

Durch die DE-PS 20 33 836 ist eine Druckeinheit zur Durchführung eines fliegenden Druckplattenwechsels bekannt geworden. Der Gegendruckzylinder ist hierbei schwenkbar angeordnet und kann mit zwei Plattenzylindern in Berührung gebracht werden. Die Papierbahn umschlingt den Gegendruckzylinder, und das hat bei Verschwenkung zur Folge, daß die Papierbahnspannung beeinflußt wird. Die DE 33 13 219 C2 zeigt eine Druckeinheit zur Durchführung des fliegenden Druckplattenwechsels, bei der eine einzige Farbauftragswalze angeordnet ist, an die zwei Plattenzylinder anstellbar sind. Die Anstellvorrichtung ist in Form eines Schlittens ausgebildet, indem beide Formzylinder drehbar und antreibbar gelagert sind. Durch Bewegung des Schlittens kann jeweils nur ein Formzylinder an die Farbauftragswalze angestellt werden. Zwangsläufig ist dann der zweite Formzylinder von der Farbauftragswalze abgestellt.From DE-PS 20 33 836 a printing unit for performing a flying printing plate change has become known. The impression cylinder is pivotally arranged and can be brought into contact with two plate cylinders. The paper web wraps around the impression cylinder, and when pivoted this has the consequence that the paper web tension is influenced. DE 33 13 219 C2 shows a printing unit for performing the flying printing plate change, in which a single inking roller is arranged, against which two plate cylinders can be adjusted. The adjusting device is designed in the form of a carriage in that both forme cylinders are rotatably and driveably mounted. By moving the carriage, only one forme cylinder can be placed against the inking roller. The second forme cylinder is then inevitably switched off from the inking roller.

Der Erfindung liegt die Aufgabe zugrunde, eine Druckeinheit zur Durchführung eines fliegenden Druckplattenwechsels in einer Druckeinheit einer Rotationsdruckmaschine zu schaffen. Zur Einfärbung der Druckformen auf den Formzylindern soll nur eine einzige Farbauftragswalze Verwendung finden.The invention has for its object to provide a printing unit for performing a flying printing plate change in a printing unit of a rotary printing press. For coloring the printing forms only a single inking roller should be used on the forme cylinders.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß die Druck-An-/Abstellung über den Gegendruckzylinder erfolgen kann, wobei dadurch Registerveränderungen kaum stattfinden. Es ist möglich, formalvariable Formzylinder einzusetzen. Es ist möglich, einen einfachen Exzenter einzusetzen, um damit den Anpreßdruck des Gegendruckzylinders an die Formzylinder einzustellen. Außerdem ist es mit einfachen Mitteln möglich, den Anpreßdruck der Farbwalze an die Formzylinder einzustellen.The advantages that can be achieved with the invention are, in particular, that the printing on / off can take place via the impression cylinder, whereby register changes hardly take place as a result. It is possible to use formally variable form cylinders. It is possible to use a simple eccentric to adjust the contact pressure of the impression cylinder against the forme cylinder. In addition, it is possible with simple means to adjust the contact pressure of the inking roller against the forme cylinder.

Ein Ausführungsbeispiel ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment is shown in the drawing and will be described in more detail below.

Es zeigen:

Fig. 1
eine Stirnansicht der erfindungsgemäßen Eindruckeinheit;
Fig. 2
einen Schnitt II-II in Fig. 1 ohne Seitengestelle;
Fig. 3
eine Ansicht A auf Fig. 1;
Fig. 4
Darstellung der Gleitsteine mit den Bezugsziffern für vier Gleitsteine;
Fig. 5
Anordnung der erfindungsgemäßen Druckeinheit beim Flexodruck;
Fig. 6
Anordnung der erfindungsgemäßen Druckeinheit beim Offsetdruck.
Fig. 7
Anordnung der erfindungsgemäßen Druckeinheit beim Hochdruck.
Show it:
Fig. 1
a front view of the impression unit according to the invention;
Fig. 2
a section II-II in Figure 1 without side frames.
Fig. 3
a view A on Fig. 1;
Fig. 4
Representation of the sliding blocks with the reference numbers for four sliding blocks;
Fig. 5
Arrangement of the printing unit according to the invention in flexographic printing;
Fig. 6
Arrangement of the printing unit according to the invention in offset printing.
Fig. 7
Arrangement of the printing unit according to the invention at high pressure.

In Seitengestellen 1, 2 einer Druckeinheit sind in bekannter Weise ein Gegendruckzylinder 3, zwei Umlenkwalzen 4 gelagert. In jedes der beiden Seitengestelle sind je zwei waagerechte Führungsausbrüche 7, 8, 9, 11 eingearbeitet. In jedem der vier rechteckigen Ausbrüche 7, 8, 9, 11 ist ein Gleitstein 17, 18, 19, 21 in z. B. einer Schwalbenschwanzführung verschiebbar und in einer wahlweisen Stellung arretierbar angeordnet.In side frames 1, 2 of a printing unit are a counter-pressure cylinder 3, two deflection rollers in a known manner 4 stored. In each of the two side frames, two horizontal cutouts 7, 8, 9, 11 are incorporated. In each of the four rectangular outbreaks 7, 8, 9, 11 is a sliding block 17, 18, 19, 21 in z. B. a dovetail guide slidably and lockable in an optional position.

In den sich in den Seitengestellen 1, 2 gegenüberliegenden Gleitsteinen 17 und 18 ist ein erster Formzylinder 22, in den Gleitsteinen 19 und 21 ein zweiter Formzylinder 23 in Lagern gelagert. In einer Ausgangsstellung werden jeweils die Gleitsteine 17, 19, 18, 21 gegen einen nicht dargestellten Anschlag, z. B. mittels eines Hydraulikzylinders gedrückt. In dieser Stellung ist ein Achsabstand a zwischen erstem und zweitem Formzylinder 22, 23 so groß, daß je nach Stellung immer nur ein Formzylinder, entweder der erste Formzylinder 22 oder der zweite Formzyinder 23 sowohl mit dem Gegendruckzylinder 3, wie auch mit einer Farbauftragswalze 27 in Berührung gebracht werden kann. Die Farbauftragswalze 27 ist mit einer Farbwanne 33 und Rakel 34 in einer schwenkbaren Schwinge 50 angeordnet. Die Schwinge 50 ist zwischen den Seitengestellen 1, 2 angeordnet und in ihnen gelagert. Die Farbauftragswalze 27 kann in bekannter Weise über den Hauptantrieb der Maschine oder über einen eigenen Antriebsmotor 57 angetrieben werden.In the sliding blocks 17 and 18 opposite one another in the side frames 1, 2, a first forme cylinder 22 is mounted in bearings in the sliding blocks 19 and 21. In a starting position, the sliding blocks 17, 19, 18, 21 are each against a stop, not shown, for. B. pressed by means of a hydraulic cylinder. In this position, a center distance a between the first and second forme cylinders 22, 23 is so large that, depending on the position, only one forme cylinder, either the first forme cylinder 22 or the second forme cylinder 23, both with the impression cylinder 3 and with an inking roller 27 in Can be brought into contact. The inking roller 27 is arranged with an ink pan 33 and doctor blade 34 in a pivotable rocker 50. The rocker 50 is arranged between the side frames 1, 2 and stored in them. The inking roller 27 can be driven in a known manner via the main drive of the machine or via its own drive motor 57.

Zur Verschiebung der Gleitsteine 17 und 19 oder 18 und 21 ist an jedem der Gleitsteine 17, 18, 19, 21 z. B. je ein doppelt wirkender Hydraulikzylinder 5, 10 bzw. 15, 20 (nur dargestellt für die Gleitsteine 17, 18) angeordnet, dessen Gabelkopf jeweils am Gleitstein 17, 19 bzw. 18, 21 und dessen Gegenlager jeweils am Seitgestell 1 bzw. 2 befestigt ist. Um die sich gegenüberliegenden Gleitsteine 17, 19 bzw. 18, 21 synchron bewegen zu können, können hydraulische Steuereinheiten verwendet werden, wie sie z. B. durch das DE-GM 79 22 181 bekanntgeworden sind.To move the sliding blocks 17 and 19 or 18 and 21 on each of the sliding blocks 17, 18, 19, 21 z. B. each a double-acting hydraulic cylinder 5, 10 or 15, 20 (only shown for the sliding blocks 17, 18) arranged, the fork head on the sliding block 17, 19 or 18, 21 and its counter bearing each on the side frame 1 or 2nd is attached. In order to be able to move the opposing sliding blocks 17, 19 or 18, 21 synchronously, can be used hydraulic control units, such as. B. have become known by DE-GM 79 22 181.

Die Farbauftragswalze 27 ist mit ihren Zylinderzapfen 28, 29 unterhalb des Gegendruckzylinders 3 und den beiden Rotationsachsen der Formzylinder 22, 23 in einer Schwinge 50 antreibbar gelagert. Die Schwinge 50, und damit die Farbauftragswalze 27 ist schwenkbar um eine zur Rotationsachse der Farbauftragswalze 27 parallele Schwenkachse 72, welche durch die Zentren von zwei Zapfen 12, 13 in den Seitengestellen 1, 2 geht, die unterhalb der Rotationsachse 71 der Farbauftragswalze 27 und zwischen den Seitengestellen 1, 2 gelagert ist.The inking roller 27 is mounted with its cylinder journals 28, 29 below the impression cylinder 3 and the two axes of rotation of the forme cylinders 22, 23 in a rocker 50. The rocker 50, and thus the inking roller 27, is pivotable about a pivot axis 72 parallel to the axis of rotation of the inking roller 27, which passes through the centers of two pins 12, 13 in the side frames 1, 2, below the axis of rotation 71 of the inking roller 27 and between the side frames 1, 2 is mounted.

Zum Erzeugen einer Schwenkbewegung der Schwinge 50 ist ein doppeltwirkender Hydraulikzylinder 40 vorgesehen, dessen Gabel an der Innenseite des Seitengestelles 1 oder 2 befestigt ist. Ein Abstand der Rotationsachse 71 der Farbauftragswalze 27 von dem Zentrum der Zapfen 12, 13 ist dabei so gewählt, daß der Mantel der Farbauftragswalze 27 mit dem Mantel der Formzylinder 22, 23 wechselweise in Berührung gebracht werden kann.To generate a pivoting movement of the rocker 50, a double-acting hydraulic cylinder 40 is provided, the fork of which is attached to the inside of the side frame 1 or 2. A distance of the axis of rotation 71 of the inking roller 27 from the center of the pin 12, 13 is chosen so that the jacket of the inking roller 27 can be brought into contact with the jacket of the forme cylinders 22, 23 alternately.

Ein Achsabstand b zwischen Gegendruckzylinder 3 und den Rotationsachsen der Formzylinder 22, 23 ist dabei so gewählt, daß wahlweise in einer "Druck-An-Stellung" des Gegendruckzylinders 3 dieser mit beiden Formzylindern 22, 23 wahlweise in Berührung gebracht werden kann. Hierzu sind die Zylinderzapfen 28, 29 in Exzenterbuchsen 14, 16 gelagert, die wiederum in Bohrungen der Seitengestelle 1, 2 gelagert sind. Die Exzenterbuchsen 14, 16 weisen je einen Hebelarm 58, 59 auf, der jeweils mit einem doppeltwirkenden Hydraulikzylinder 60, 61 kraftschlüssig verbunden ist. Diese Hydraulikzylinder 60, 61 werden gleichzeitig so beaufschlagt, daß der Gegendruckzylinder 3 entweder gegen den rechten Formzylinder 23 oder den linken Formzylinder 22 gepreßt wird und so jeweils die Papierbahn 42 gegen sie drückt. Links und rechts neben den Hebelarmen 58, 59 ist je ein einstellbarer Anschlag angebracht; sie dienen zur Begrenzung des Verschwenkwinkels des Gegendruckzylinders 3.A center distance b between the impression cylinder 3 and the axes of rotation of the forme cylinders 22, 23 is chosen so that optionally in a "pressure-on position" of the impression cylinder 3 this can be brought into contact with both forme cylinders 22, 23. For this purpose, the cylinder pins 28, 29 are mounted in eccentric bushes 14, 16, which in turn are mounted in holes in the side frames 1, 2. The eccentric bushes 14, 16 each have a lever arm 58, 59, each of which is non-positively connected to a double-acting hydraulic cylinder 60, 61. These hydraulic cylinders 60, 61 are acted on simultaneously so that the impression cylinder 3 either against the right forme cylinder 23 or the left forme cylinder 22 is pressed and so the paper web 42 presses against them. An adjustable stop is attached to the left and right of the lever arms 58, 59; they serve to limit the pivoting angle of the impression cylinder 3.

Die Farbauftragswalze 27 kann als harte, gerasterte Walze (Anilox-Walze) ausgeführt sein. In diesem Falle taucht sie beispielsweise in eine Farbwanne 33 ein, die mit einer Flexodruckfarbe oder einer anderen dünnflüssigen Druckfarbe, z. B. dünnflüssiger Hochdruckfarbe gefüllt ist. Überschüssige Druckfarbe wird von der Farbauftragswalze in bekannter Weise mittels einer Rakel 34 abgerakelt.The inking roller 27 can be designed as a hard, screened roller (anilox roller). In this case, it is immersed, for example, in an ink pan 33 which is coated with a flexographic printing ink or another thin liquid printing ink, e.g. B. low viscosity high pressure paint is filled. Excess printing ink is scraped off the ink application roller in a known manner by means of a doctor blade 34.

Bei hartem Mantel der Farbauftragswalze 27, wie bei Verwendung einer gerasterten Walze, müssen auf die Formzylinder 22, 23 weiche Druckformen 36, 37 aufgespannt werden.If the inking roller 27 has a hard jacket, such as when using a rastered roller, soft printing formes 36, 37 must be clamped onto the forme cylinders 22, 23.

Die Farbauftragswalze 27 kann jedoch auch als letzte Walze 38 eines Offsetdruckfarbwerkes (Fig. 7) oder als letzte Walze 39 eines Hochdruckfarbwerkes (Fig. 8) ausgeführt sein. In diesem Falle müssen die Walzen 38, 39 einen elastischen Gummiüberzug erhalten. Im Falle der Verwendung von Walzen 38, 39 mit elastischen Überzügen müssen die Formzylinder 22, 23 mit sogenannten harten Druckplatten, d. h. Offset- bzw. Hochdruckplatten belegt sein. Plattenspannvorrichtungen für die Formzylinder 22, 23 sind allgemein bekannt und sind daher nicht beschrieben. Entsprechend der Verwendung von harten oder weichen Druckplatten muß ein Überzug 41 des Gegendruckzylinders 3 weich oder hart sein. Derartige Gegendruckzylinder 3 sind allgemein bekannt.The inking roller 27 can, however, also be designed as the last roller 38 of an offset printing ink unit (FIG. 7) or as the last roller 39 of a high pressure inking unit (FIG. 8). In this case, the rollers 38, 39 must have an elastic rubber coating. In the case of the use of rollers 38, 39 with elastic coatings, the forme cylinders 22, 23 with so-called hard pressure plates, i. H. Offset or high-pressure plates must be occupied. Plate clamping devices for the forme cylinders 22, 23 are generally known and are therefore not described. According to the use of hard or soft printing plates, a coating 41 of the impression cylinder 3 must be soft or hard. Such impression cylinders 3 are generally known.

Umfangsgeschwindigkeiten von Gegendruckzylinder 3, Formzylinder 22, 23 und Farbauftragswalze 27 müssen gleich groß sein.Peripheral speeds of impression cylinder 3, Forme cylinder 22, 23 and inking roller 27 must be the same size.

Der Durchmesser der Farbauftragswalze 27 ist vorzugsweise so groß wie ein Durchmesser Gegendruckzylinder 3. Die Durchmesser der Formzylinder 22, 23 können sogar variabel sein, aber auch den gleichen Durchmesser aufweisen wie die Farbauftragswalze 27.The diameter of the inking roller 27 is preferably as large as a diameter of the impression cylinder 3. The diameters of the forme cylinders 22, 23 can even be variable, but can also have the same diameter as the inking roller 27.

Die Farbwerke (z. B. Anilox-Farbwerk, Tiefdruckfarbwerk, Offset-Farbwerk oder Hochdruck-Farbwerk) sind erfindungsgemäß in die Schwinge 50 eingebaut. Ein Antrieb für deren Walzen, kann über eine Kupplung mit Achsenversatz, sog. Schmittkupplung, vom Hauptantrieb der Maschine erfolgen.The inking units (e.g. anilox inking unit, gravure inking unit, offset inking unit or high-pressure inking unit) are built into the rocker 50 according to the invention. The rollers can be driven by a coupling with an axis offset, so-called Schmitt coupling, from the main drive of the machine.

Eine Papierbahn 42 wird in einem Druckspalt zwischen Gegendruckzylinder 3 und Formzylinder 22 bzw. Formzylinder 23 einseitig bedruckt.A paper web 42 is printed on one side in a printing nip between impression cylinder 3 and forme cylinder 22 or forme cylinder 23.

Zum Antrieb von Gegendruckzylinder 3, Formzylinder 22, 23 und Farbauftragswalze 27 sind Stirnräder 44, 46, 43, 47 vorgesehen, sie sind auf die Antriebszapfen der genannten Zylinder aufgekeilt. Stirnrad 43 ist als Doppelzahnrad ausgeführt. Auf Stirnrad 44 erfolgt ein Kraftantrieb von einem Hauptantrieb aus. Das äußere Zahnrad des Stirnrades 43 kämmt mit dem Stirnrad 47, das die Farbauftragswalze 27 antreibt. Das innere Zahnrad des Stirnrades 43 steht mit dem Stirnrad 44 für den Gegendruckzylinder 3 in Eingriff. Das Stirnrad 44 treibt das Stirnrad 46 des Formzylinders 22 an.To drive the impression cylinder 3, forme cylinder 22, 23 and inking roller 27, spur gears 44, 46, 43, 47 are provided, they are wedged onto the drive pins of the cylinders mentioned. Spur gear 43 is designed as a double gear. A power drive from a main drive takes place on spur gear 44. The outer gear of the spur gear 43 meshes with the spur gear 47 which drives the inking roller 27. The inner gear of the spur gear 43 is in engagement with the spur gear 44 for the impression cylinder 3. The spur gear 44 drives the spur gear 46 of the forme cylinder 22.

Um die Formzylinder 22, 23 unabhängig von der Hauptdruckmaschine stillsetzen und antreiben zu können, sind (aus Vereinfachungsgründen nur bei Formzylinder 23 dargestellt) jeweils zwischen beide Lagerzapfen 48, 49 und beide Zylinderzapfen 51, 52 der Formzylinder 22, 23 je eine elektrisch schaltbare und trennbare Kupplung 53, 54 z. B. Polreihungskupplung zwischengeschaltet. Jeweils auf dem linken Lagerzapfen 48 der beiden Formzylinder 22, 23 ist je ein regelbarer Elektromotor 55, 56, z. B. Gleichstrommotor mit angeflanschter Encoderscheibe zur Messung der Istdrehzahl angeordnet. Der Elektromotor 55 ist an den Gleitstein 17, der Elektromotor 56 an den Gleitstein 18 angeflanscht. Auf den Zylinderzapfen 28 des Gegendruckzylinders 3 ist ebenfalls eine Encoderscheibe 35 angeflanscht, mit der die Solldrehzahl gemessen wird.In order to be able to shut down and drive the forme cylinders 22, 23 independently of the main printing press, (for reasons of simplification only for forme cylinders 23 each shown) between the two bearing journals 48, 49 and both cylinder journals 51, 52 of the forme cylinders 22, 23 each have an electrically switchable and separable coupling 53, 54 z. B. interposed clutch. Each on the left journal 48 of the two forme cylinders 22, 23 is a controllable electric motor 55, 56, z. B. DC motor with flanged encoder disc for measuring the actual speed. The electric motor 55 is flanged to the sliding block 17, the electric motor 56 to the sliding block 18. An encoder disk 35 is also flanged to the cylinder journal 28 of the counter-pressure cylinder 3 and is used to measure the setpoint speed.

Der Plattenwechselvorgang ist für beide Formzylinder 22, 23 der gleiche. Deswegen wird aus Vereinfachungsgründen die Beschreibung der Vorgänge beim "Druck-An" und "Druck-Ab-Stellen" und Plattenwechseln auf dem Formzylinder 23 beschränkt.The plate changing process is the same for both forme cylinders 22, 23. Therefore, for the sake of simplicity, the description of the processes during "printing on" and "printing off" and plate changing on the forme cylinder 23 is limited.

Zum Auflegen einer neuen Druckform 37 auf den Formzylinder 23 muß der Gegendruckzylinder 3 und einzige, mit jeweils einem der beiden Formzylinder 22, 23 zusammenwirkende Farbauftragswalze 27 vom Formzylinder 22 abgerückt werden. Dieses geschieht durch gleichzeitiges Verschieben der Gleitsteine 18 und 21, so daß der Formzylinder, z. B. Formzylinder 23, von der Farbauftragswalze 27 und dem Gegendruckzylinder 3 frei werden. Anschließend wird der Formzylinder 23 stillgesetzt. Das Stillsetzen geschieht dadurch, daß auf der Stirnradseite die Kupplung 54 ausgeschaltet und die Kupplung 53 auf der Gleichstrommotorseite zugeschaltet wird, so daß der Formzylinder 23 nun mit dem, mit einer der Drehzahl des Formzylinders 23 entsprechenden Drehzahl laufenden Gleichstrommotor 56 zusammengekuppelt ist. Nun wird nach dem Gegenstromprinzip der Gleichstrommotor 56 und damit der Formzylinder 23 bis zum Stillstand abgebremst und anschließend abgeschaltet.To place a new printing form 37 on the forme cylinder 23, the impression cylinder 3 and the only inking roller 27, which cooperate with one of the two forme cylinders 22, 23, must be moved away from the forme cylinder 22. This is done by simultaneously moving the sliding blocks 18 and 21, so that the forme cylinder, for. B. form cylinder 23, of the inking roller 27 and the impression cylinder 3 are free. The forme cylinder 23 is then stopped. Stopping takes place in that the clutch 54 is switched off on the spur gear side and the clutch 53 is switched in on the DC motor side, so that the forme cylinder 23 is now coupled with the DC motor 56 running at a speed corresponding to the speed of the forme cylinder 23. Now the direct current motor 56 and thus the countercurrent principle the forme cylinder 23 braked to a standstill and then switched off.

Das Verschieben der Gleitsteine 18, 21 bzw. 17, 19 geschieht durch das gleichzeitige Beaufschlagen der doppeltwirkenden Hydraulikzylinder 15, 20 bzw. 5, 10, deren Gegenlager an der Innenseite der Seitengestelle 1, 2 und deren Gabelköpfe jeweils an der Stirnseite 24, 26 der Gleitsteine 18, 21 bzw. 17, 19 befestigt sind. In der "Druck-An-Stellung" und in der "Wartestellung" sind die Gleitsteine 17, 19, 18, 21 immer gegen einstellbare Anschläge 67, 68 bzw. 69, 70 gedrückt.The sliding blocks 18, 21 and 17, 19 are moved by the simultaneous loading of the double-acting hydraulic cylinders 15, 20 and 5, 10, their counter bearings on the inside of the side frames 1, 2 and their clevises on the front side 24, 26 of the Sliding blocks 18, 21 and 17, 19 are attached. In the "pressure-on position" and in the "waiting position" the sliding blocks 17, 19, 18, 21 are always pressed against adjustable stops 67, 68 and 69, 70.

Beim Druckplattenwechsel wird der mit einer neuen Druckform 37 belegte Formzylinder 23 mittels der zwischen Gleitsteinen 18, 21 wirkenden beiden Hydraulikzylindern 15, 20 in seine Stellung - d. h. Anschlag an den Anschlägen 67, 68 gehalten. In dieser Stellung besteht nun zwischen dem Formzylinder 23 und Farbauftragswalze 27 und zwischen und dem Gegendruckzylinder 3 je ein Spalt zwischen 1-2 mm. Anschließend wird die Kupplung 53 zum Elektroantrieb 56 geschaltet, die Kupplung 54 zum Stirnrad 43 bleibt jedoch offen. Danach wird der Elektroantrieb 56 aktiviert und seine Drehzahl so weit erhöht, bis Formzylinder z. B. 23 und Gegendruckzylinder 3 gleiche Umfangsgeschwindigkeit haben. In diesem Augenblick wird die Kupplung 54 zwischen Formzylinder 23 und dem Stirnrad 43 geschaltet und die Kupplungsverbindung 53 zwischen Formzylinder 23 und Elektroantrieb 56 gelöst, d. h. der Formzylinder 23 wird vom Hauptantrieb der Maschine angetrieben. Anschließend werden die Hydraulikzylinder 40, 60, 61 so beaufschlagt, daß der Gegendruckzylinder 3 und die Farbauftragswalze 27 bewegt und an den Formzylinder 23 angedrückt werden ("Druck-An-Stellung"). In dieser Stellung färbt die Farbauftragswalze 27 eine Druckform 37 des Formzylinders 23 ein. Die Papierbahn 42 wird nun zwischen Formzylinder 23 und Gegendruckzylinder 3 bedruckt.When changing the printing plate, the forme cylinder 23 covered with a new printing forme 37 is held in its position by means of the two hydraulic cylinders 15, 20 acting between sliding blocks 18, 21 - that is, it stops at the stops 67, 68. In this position there is now a gap between 1-2 mm between the forme cylinder 23 and inking roller 27 and between and the impression cylinder 3. The clutch 53 is then switched to the electric drive 56, but the clutch 54 to the spur gear 43 remains open. Then the electric drive 56 is activated and its speed increased until the forme cylinder z. B. 23 and impression cylinder 3 have the same peripheral speed. At this moment the clutch 54 is switched between the forme cylinder 23 and the spur gear 43 and the coupling connection 53 between the forme cylinder 23 and the electric drive 56 is released, ie the forme cylinder 23 is driven by the main drive of the machine. Then the hydraulic cylinders 40, 60, 61 are acted on so that the impression cylinder 3 and the inking roller 27 are moved and pressed onto the forme cylinder 23 ("Print on position"). In this position, the inking roller 27 dyes a printing form 37 of the forme cylinder 23. The paper web 42 is now printed between the forme cylinder 23 and the impression cylinder 3.

Durch die Bewegung von Gegendruckzylinder 3 und Farbauftragswalze 27 in die "Druck-An-Stellung" zum Formzylinder 23, wird zwangsläufig der andere Formzylinder 22 in eine "Druck-Ab-Stellung", d. h. vom Gegendruckzylinder 3 und der Farbauftragswalze 27 außer Berührung gebracht, vom Stirnrad 46 abgekuppelt, dann an den mit entsprechender Drehzahl umlaufenden Elektromotor 55 angekuppelt und anschließend durch das oben beschriebene elektrische Bremsverfahren auf Drehzahl Null abgebremst.By moving the impression cylinder 3 and inking roller 27 in the "print-on position" to the forme cylinder 23, the other forme cylinder 22 is inevitably in a "print-off position", i. H. brought out of contact by the impression cylinder 3 and the inking roller 27, uncoupled from the spur gear 46, then coupled to the electric motor 55 rotating at an appropriate speed and then braked to zero speed by the electrical braking method described above.

Der Antrieb der Farbkastenwalze 27 kann erfolgen über das vom Hauptantrieb angetriebene Stirnrad 47. Zwischen Stirnrad 47 und einem seitengestellfesten Elektromotor 57 ist je eine Überholkupplung zwischengeschaltet. Hierdurch wird ermöglicht, daß bei stillstehendem Hauptantrieb die Farbkastenwalze 27 trotzdem bewegt werden kann.The ink fountain roller 27 can be driven via the spur gear 47 driven by the main drive. An overrunning clutch is interposed between the spur gear 47 and an electric motor 57 fixed to the side frame. This enables the ink fountain roller 27 to be moved anyway when the main drive is at a standstill.

Einrichtungen zum Synchronisieren von Motordrehzahlen zu Zylinderdrehzahlen sind allgemein bekannt, z. B. bei wellenlosem Antrieb von Druckwerken oder Synchronisation von Rollensternen zu Druckwerken oder der Umfangsgeschwindigkeit der neuen Rolle zur Geschwindigkeit der ablaufenden Bahn, daher wird auf ihre Beschreibung verzichtet.Means for synchronizing engine speeds to cylinder speeds are generally known, e.g. B. with shaftless drive of printing units or synchronization of roller stars to printing units or the peripheral speed of the new roll to the speed of the running web, therefore their description is omitted.

Die Erfindung ist nicht auf den Tiefdruck (Fig. 6) beschränkt, wie aus der Fig. 6 und der Fig. 8 ersichtlich ist, kann die Erfindung auch in Flexo-, Offset- und Hochdruck angewendet werden.The invention is not limited to gravure printing (FIG. 6), as can be seen from FIG. 6 and FIG. 8, the invention can also be used in flexographic, offset and letterpress printing.

TeilelisteParts list

11
SeitengestellSide frame
22nd
SeitengestellSide frame
33rd
GegendruckzylinderImpression cylinder
44th
RegisterwalzeRegister roller
55
HydraulikzylinderHydraulic cylinder
66
UmlenkwalzeDeflection roller
77
FührungsnutGuide groove
88th
FührungsnutGuide groove
99
Gleitgabel Führungsnut (-Ausbruch)Sliding fork guide groove (cutout)
1010th
HydraulikzylinderHydraulic cylinder
1111
Gleitgabel Führungsnut (-Ausbruch)Sliding fork guide groove (cutout)
1212
ZapfenCones
1313
ZapfenCones
1414
ExzenterbuchseEccentric bushing
1515
HydraulikzylinderHydraulic cylinder
1616
ExzenterbuchseEccentric bushing
1717th
Gleitstein (23)Sliding block (23)
1818th
Gleitstein (22)Sliding block (22)
1919th
Gleitstein (23)Sliding block (23)
2020th
HydraulikzylinderHydraulic cylinder
2121
Gleitstein (22)Sliding block (22)
2222
Formzylinder, ersterForme cylinder, first
2323
Formzylinder, zweiterForme cylinder, second
2424th
StirnseiteFace
2525th
Rotationsachse (22)Rotation axis (22)
2626
StirnseiteFace
2727th
FarbauftragswalzeInking roller
2828
Zylinderzapfen (3)Cylinder pin (3)
2929
Zylinderzapfen (3)Cylinder pin (3)
3030th
Rotationsachse (27)Rotation axis (27)
3131
Rotationsachse (3)Rotation axis (3)
3232
Rotationsachse (27)Rotation axis (27)
3333
FarbwannePaint tray
3434
RakelSqueegee
3535
EncoderscheibeEncoder disc
3636
Druckform (22)Printing form (22)
3737
Druckform (23)Printing form (23)
3838
Walzeroller
3939
Walzeroller
4040
HydraulikzylinderHydraulic cylinder
4141
Überzug (3)Cover (3)
4242
PapierbahnPaper web
4343
StirnradSpur gear
4444
StirnradSpur gear
4545
HydraulikzylinderHydraulic cylinder
4646
StirnradSpur gear
4747
StirnradSpur gear
4848
LagerzapfenBearing journal
4949
LagerzapfenBearing journal
5050
SchwingeSwingarm
5151
ZylinderzapfenCylinder journal
5252
ZylinderzapfenCylinder journal
5353
Kupplung (51)Clutch (51)
5454
Kupplung (52)Clutch (52)
5555
Elektromotor (22)Electric motor (22)
5656
Elektromotor (23)Electric motor (23)
5757
Elektromotor (27)Electric motor (27)
5858
Hebelarm (14)Lever arm (14)
2929
Hebelarm (16)Lever arm (16)
6060
Hydraulikzylinder (3)Hydraulic cylinder (3)
6161
Hydraulikzylinder (3)Hydraulic cylinder (3)
6262
Anschlag (58)Stop (58)
6363
Anschlag (58)Stop (58)
6464
Anschlag (59)Stop (59)
6565
--
6666
Anschlag (59)Stop (59)
6767
Anschlagattack
6868
Anschlagattack
6969
Anschlagattack
7070
Anschlagattack
7171
Rotationsachse (27)Rotation axis (27)
7272
Schwenkachse (27)Swivel axis (27)
aa
Achsabstand (31, 32)Center distance (31, 32)
bb
Durchmesser (27)Diameter (27)

Claims (5)

Druckeinheit zur Durchführung eines fliegenden Druckplattenwechsels mit einem Gegendruckzylinder, einem ersten und einem zweiten Formzylinder, und einer einzigen Farbauftragswalze, wobei wahlweise eine Druckstelle zwischen dem Gegendruckzylinder und dem ersten Formzylinder oder dem zweiten Formzylinder einrichtbar ist, und dementsprechend Farbauftragswalze und erster oder zweiter Formzylinder miteinander in Kontakt bringbar angeordnet ist, dadurch gekennzeichnet, daß die Farbauftragswalze (27) wahlweise mit dem ersten (22) oder dem zweiten Formzylinder (23) in Berührungskontakt bringbar angeordnet ist.Printing unit for performing a flying printing plate change with an impression cylinder, a first and a second forme cylinder, and a single inking roller, wherein a printing point can optionally be set up between the impression cylinder and the first forme cylinder or the second forme cylinder, and accordingly inking roller and first or second forme cylinder with one another Contact can be arranged, characterized in that the inking roller (27) can be brought into contact with either the first (22) or the second forme cylinder (23). Druckeinheit nach Anspruch 1, dadurch gekennzeichnet, daß die Farbauftragswalze (27) um eine, unterhalb ihrer Rotationsachse (71) und parallel zu ihr sich erstreckenden Schwenkachse (72) schwenkbar angeordnet ist.Printing unit according to claim 1, characterized in that the inking roller (27) is arranged to be pivotable about a pivot axis (72) extending below its axis of rotation (71) and parallel to it. Druckeinheit nach Anspruch 1 bis 2, dadurch gekennzeichnet, daß die Farbauftragswalze (27) zusammen mit einem dazugehörigen Farbwerk um eine Schwenkachse schwenkbar angeordnet ist.Printing unit according to Claims 1 to 2, characterized in that the inking roller (27) is arranged together with an associated inking unit so as to be pivotable about a pivot axis. Druckeinheit nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Farbauftragswalze (27) und das dazugehörige Farbwerk in einer schwenkbaren Schwinge (50) angeordnet ist.Printing unit according to claims 1 to 3, characterized in that the inking roller (27) and the associated inking unit is arranged in a pivotable rocker (50). Druckeinheit nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß der Gegendruckzylinder (3) wahlweise mit dem ersten Formzylinder (22) oder dem zweiten Formzylinder (23) in Berührung bringbar angeordnet ist.Printing unit according to Claims 1 to 4, characterized in that the impression cylinder (3) is arranged such that it can be brought into contact either with the first forme cylinder (22) or the second forme cylinder (23).
EP92106227A 1991-04-19 1992-04-10 Printing unit for a rotary printing press Expired - Lifetime EP0509414B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4112925 1991-04-19
DE4112925A DE4112925A1 (en) 1991-04-19 1991-04-19 PRINTING UNIT FOR A ROTATIONAL PRINTING MACHINE

Publications (2)

Publication Number Publication Date
EP0509414A1 true EP0509414A1 (en) 1992-10-21
EP0509414B1 EP0509414B1 (en) 1995-06-28

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EP92106227A Expired - Lifetime EP0509414B1 (en) 1991-04-19 1992-04-10 Printing unit for a rotary printing press

Country Status (5)

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US (1) US5191836A (en)
EP (1) EP0509414B1 (en)
JP (1) JPH0717053B2 (en)
DE (2) DE4112925A1 (en)
RU (1) RU2023594C1 (en)

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GB2229139A (en) * 1986-05-14 1990-09-19 Drg Uk Ltd Inking apparatus moveable to service more than one printing nip
EP0321360A1 (en) * 1987-12-18 1989-06-21 Usinage Montage Et Assistance Technique U.M.A.T. Offset printing press operating in tandem

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994020299A1 (en) * 1993-03-09 1994-09-15 Seroma Device for the adjustment of a flexographic printing machine unit
EP0664212A1 (en) * 1994-01-19 1995-07-26 Stork X-Cel B.V. Printing device provided with movable printing unit
NL9400088A (en) * 1994-01-19 1995-09-01 Stork X Cel Bv Printing device provided with movable printing unit.
US5505128A (en) * 1994-01-19 1996-04-09 Stork X-Cel B.V. Printing device provided with movable printing unit
US5658844A (en) * 1995-02-09 1997-08-19 Degussa Aktiengesellschaft Catalyst for the production of cyanopyriclines
EP0895857A2 (en) * 1997-08-07 1999-02-10 Heidelberger Druckmaschinen Aktiengesellschaft Device and method for changing the printing image during the operation of a printing press
EP0895857A3 (en) * 1997-08-07 1999-06-30 Heidelberger Druckmaschinen Aktiengesellschaft Device and method for changing the printing image during the operation of a printing press
US6119593A (en) * 1997-08-07 2000-09-19 Heidelberger Druckmaschinen Ag Apparatus and method for changing images during operation of a printing press
EP1157830A1 (en) * 1997-08-07 2001-11-28 Heidelberger Druckmaschinen Aktiengesellschaft Device and method for changing the printing image during the operation of a printing press
CN112519368A (en) * 2020-11-30 2021-03-19 重庆鼎盛印务股份有限公司 Composite bag for food packaging and production process thereof

Also Published As

Publication number Publication date
EP0509414B1 (en) 1995-06-28
US5191836A (en) 1993-03-09
JPH0717053B2 (en) 1995-03-01
JPH05154999A (en) 1993-06-22
DE59202653D1 (en) 1995-08-03
DE4112925A1 (en) 1992-10-22
RU2023594C1 (en) 1994-11-30

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