EP0659554A2 - Printing unit for a rotary printing machine - Google Patents

Printing unit for a rotary printing machine Download PDF

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Publication number
EP0659554A2
EP0659554A2 EP94120168A EP94120168A EP0659554A2 EP 0659554 A2 EP0659554 A2 EP 0659554A2 EP 94120168 A EP94120168 A EP 94120168A EP 94120168 A EP94120168 A EP 94120168A EP 0659554 A2 EP0659554 A2 EP 0659554A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
support
printing unit
forme cylinder
unit according
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
EP94120168A
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German (de)
French (fr)
Other versions
EP0659554B1 (en
EP0659554A3 (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
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Filing date
Publication date
Application filed by Albert Frankenthal AG, Koenig and Bauer Albert AG filed Critical Albert Frankenthal AG
Publication of EP0659554A2 publication Critical patent/EP0659554A2/en
Publication of EP0659554A3 publication Critical patent/EP0659554A3/en
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Publication of EP0659554B1 publication Critical patent/EP0659554B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/36—Cams, eccentrics, wedges, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/13—Machines with double or multiple printing units for "flying" printing plates exchange

Definitions

  • the invention relates to a printing unit for a rotary printing press according to the preamble of claim 1.
  • EP 02 34 456 A2 is an additional printing unit, for. B. for flexographic printing, also known as "imprinter", in which two forme cylinders are mounted on the side frame.
  • An anilox cylinder is assigned to each forme cylinder in connection with a paint application device, each anilox cylinder being separately adjustable against the forme cylinder.
  • a counter-pressure cylinder which can alternatively be adjusted and pivoted to each forme cylinder is provided. Only one forme cylinder in connection with the impression cylinder and one anilox cylinder with an ink application device are in operation, whereby the second forme cylinder, which is not in operation, can be cleaned or exchanged.
  • a disadvantage of this printing unit is that bending vibrations that occur during the operating state cannot be completely eliminated, in particular if they are soft, in spite of the hydraulic Aristell means Printing plates, as is usual for flexographic printing processes, are applied to the forme cylinder.
  • the invention has for its object to provide a printing unit for a rotary printing press, in particular an "imprinter”, in which a smooth, play-free adjustment or readjustment of the cylinders against each other is made possible even during operation of the printing unit.
  • the arrangement of support disks enables cylinders to be placed on a cylinder which is fixed to the frame quickly and without play.
  • the adjustable cylinders can also be easily adjusted during operation of the printing unit, since the force acting on a support disk of the forme cylinder is only from one side. Readjustment of cylinders is particularly necessary when using flexible high-pressure printing plates on the forme cylinder as a result of wear and tear on the printing plate. The effects of so-called "channel strikes" are avoided.
  • the printing unit is also of variable format.
  • Two forme cylinders 1, 2 for receiving printing plates 3 are mounted via their axle journals 4, 6 in side frames 7, 8 in two different, mutually spaced vertical and parallel planes 9, 11, the second side frame 8 being indicated in FIG. 2 .
  • Each anilox roller 14, 16 can be adjusted to a forme cylinder 1, 2 mounted on the frame.
  • a counter-pressure cylinder is shown above its axle journal 22 (only a left axle journal 22 is shown, as is the case with the other cylinders 1, 2 and rollers 14, 16) 24 arranged, which can be adjusted with its circumference either to one of the two forme cylinders 1, 2.
  • the third, Vertical plane 23 is located in the middle between the two vertical planes 9, 11 of the forme cylinder 1, 2.
  • the impression cylinder 24 is pivotably mounted via its axle journals 22 in a bracket 26 fixed to the side frame by means of an eccentric bearing 25.
  • the forme cylinders 1, 2 and the anilox rollers 14, 16 are each via their journal 4, 6; 17, 18 and not shown gear can be driven.
  • Below each anilox roller 14, 16 there is an ink application device, e.g. B. chambered doctor blade 29, 31 arranged.
  • Each forme cylinder 1; 2 has on its journal 4, 6 a support disc 33, 49; 52, 34, which are concentric with the axis of rotation 19; 21 of the forme cylinder 1; 2 is arranged.
  • the support disc 33, 49; 52, 34 suitably consists of a ball bearing, which with its inner ring on the journal 19; 21 of the forme cylinder 1; 2 is pressed and the outer ring acts as a support plate.
  • An inner ring 35 and an outer ring 40 are shown using the example of the concentric support disk 34.
  • the axle journal 22 of the counter-pressure cylinder 24 has two support disks 37, 38, which are arranged one behind the other in the axial direction of the counter-pressure cylinder 24, between the holder 26 and the end face 36 of the counter-pressure cylinder 24, which also consist of ball bearings (not described in more detail), but the outer ring has an eccentricity 27, 28 to the axis of rotation 39 of the impression cylinder 24.
  • the eccentricity 27, 28 is in each case “sickle-shaped”, ie it results from the difference between a radius r2 and r1 of the support disk 37, 38, where r2 is greater than r1.
  • the envelope curve of the support disks 37, 38 has an eccentricity 27, 28.
  • a support disc 37 close to the counter-pressure cylinder 24 on the front side is aligned with the central support disc 33 of the left forme cylinder 1 (FIG. 2) and a support disc 38 remote from the end pressure cylinder 24 with the central support disc 34 of the right-hand forme cylinder 2 eccentric support disks 37; 38 also have teeth 41 on their circumference; 42, wherein the toothing 41 of the support disk 38 remote from the end face with a gear 43 of a drive motor 46 and the toothing 42 of the eccentric support disk 37 close to the end face with a gear 44 of a drive motor 47, e.g. B. servomotor, combs.
  • the holder 26 was therefore only indicated by dashed lines below the gearwheels 43, 44.
  • the anilox rollers 14; 16 which on their journals 17; 18 support disks 48; 51 have analogous to the way in which the eccentric support disks 37; 38 described.
  • the eccentric support disk 48 works, which is applied to the journal 17 of the anilox roller 14 is together with a concentric support disc 49 mounted on the journal 4 of the forme cylinder 1 remote from the end face.
  • an eccentric support disk 51 located on the journal 18 of the anilox roller 16 cooperates with a second concentric support disk 52 located on the journal 6 in the vicinity of the side frame 7.
  • eccentricity 50, 55 On the support disks 48, 51 there is also a toothing 56, 57 which meshes with a gear 58, 59, which is each positively connected to a drive motor 61, 62. What has been said about eccentricity 27, 28 also applies to eccentricity 50, 55.
  • the concentric support disc 33 is non-positively in contact with the support disc 37 of the impression cylinder 24 that can be adjusted eccentrically near the end face.
  • the concentric support disk 49 of the forme cylinder 1 is non-positively in contact with the eccentric support disk 48 of the anilox roller 14, so that when a printing plate is worn (not shown on forme cylinder 1) the counter-pressure cylinder 24 and the anilox roller 14 can be readjusted by increasing the eccentricity 27, 28 of the support disks 37, 48 after the drive motors 47, 61 are switched on.
  • the holder 26 is set to the right by means of the eccentric bearing 25 (FIG. 2), so that the circumference of the impression cylinder 24 touches the circumference of the forme cylinder 2. Furthermore, the eccentric support plate 38 of the counter-pressure cylinder 24 has non-positive contact with the concentric support plate 34 of the forme cylinder 2.
  • the concentric support plate 52 which is also located on the journal 6 of the forme cylinder 2, has non-positive contact with the eccentric support plate 51 of the right anilox roller 16, so that always only two support disks 38, 34; 52, 51 interact, whereby the impression cylinder 24 and the anilox roller 16 on the forme cylinder 2 are easy to adjust.
  • the toothings 41, 42, 56, 57 of the support disks 38, 37, 48, 51 each amount to approximately 30 degrees of arc on the circumference of the respective outer ring.
  • concentric support disks 33, 34, 49, 52 such that a circular section is removed from their circular shape on the right and left, the secants of the circular sections running parallel to one another. These supporting disks 33, 34, 49, 52 are then secured against rotation by means of holding devices which are fixed to the frame and are not shown. The journal 4, 6 are then z. B. in plain bearings of the concentric support discs 33, 34, 49, 52. This also applies analogously to the design of the support disks 48, 51, 37, 38.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)

Abstract

In a printing unit for a rotary printing machine, in particular in a printing unit for carrying out a flying printing-plate change, a smooth-running, clearance-free engagement of further cylinders on a forme cylinder is to be made possible. This is effected by the fact that the axle journals of all the cylinders are provided with rotatable support discs, eccentrically designed support discs being engageable against concentrically designed support discs in pairs. The outer contact faces of the support discs are stationary during operation while the axle journals are arranged rotatably in the inner ring of the support disc.

Description

Die Erfindung betrifft ein Druckwerk für eine Rotationsdruckmaschine entsprechend dem Oberbegriff des Patentanspruches 1.The invention relates to a printing unit for a rotary printing press according to the preamble of claim 1.

Durch die EP 02 34 456 A2 ist ein Zusatzdruckwerk, z. B. für Flexodruck, auch "Imprinter" genannt, bekanntgeworden, bei welchem zwei Formzylinder seitengestellfest gelagert sind. Jedem Formzylinder ist ein Aniloxzylinder in Verbindung mit einer Farbauftragsvorrichtung zugeordnet, wobei jeder Aniloxzylinder separat an den Formzylinder anstellbar ist. Desgleichen ist ein alternativ an jeden Formzylinder anstellbarer sowie schwenkbar gelagerter Gegendruckzylinder vorgesehen. Es ist nur jeweils ein Formzylinder in Verbindung mit dem Gegendruckzylinder und einem Aniloxzylinder mit einer Farbauftragsvorrichtung in Betrieb, wobei der zweite, nicht in Betrieb befindliche Formzylinder gereinigt oder ausgetauscht werden kann.EP 02 34 456 A2 is an additional printing unit, for. B. for flexographic printing, also known as "imprinter", in which two forme cylinders are mounted on the side frame. An anilox cylinder is assigned to each forme cylinder in connection with a paint application device, each anilox cylinder being separately adjustable against the forme cylinder. Likewise, a counter-pressure cylinder which can alternatively be adjusted and pivoted to each forme cylinder is provided. Only one forme cylinder in connection with the impression cylinder and one anilox cylinder with an ink application device are in operation, whereby the second forme cylinder, which is not in operation, can be cleaned or exchanged.

Nachteilig bei diesem Druckwerk ist, daß während des Betriebszustandes auftretende Biegeschwingungen trotz hydraulische wirkender Aristellmittel nicht vollständig abgebaut werden können, insbesondere wenn weiche Druckplatten, wie für Flexodruckverfahren üblich, auf dem Formzylinder aufgebracht sind.A disadvantage of this printing unit is that bending vibrations that occur during the operating state cannot be completely eliminated, in particular if they are soft, in spite of the hydraulic Aristell means Printing plates, as is usual for flexographic printing processes, are applied to the forme cylinder.

Der Erfindung liegt die Aufgabe zugrunde, ein Druckwerk für eine Rotationsdruckmaschine, insbesondere einen "Imprinter" zu schaffen, bei welchem auch während des Betriebes des Druckwerkes ein leichtgängiges, spielfreies Anstellen oder Nachstellen der Zylinder gegeneinander ermöglicht wird.The invention has for its object to provide a printing unit for a rotary printing press, in particular an "imprinter", in which a smooth, play-free adjustment or readjustment of the cylinders against each other is made possible even during operation of the printing unit.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des kennzeichnenden Teils des Anspruches 1 gelöst.According to the invention, this object is achieved by the features of the characterizing part of claim 1.

Durch die Erfindung sind nachfolgende Vorteile erzielbar: Durch die Anordnung von Stützscheiben ist ein schnelles und spielfreies Anstellen von Zylindern an einen gestellfesten Zylinder möglich. Auch während des Betriebes des Druckwerkes kann ein leichtgängiges Nachstellen der anstellbaren Zylinder stattfinden, da die Krafteinwirkung auf eine Stützscheibe des Formzylinders jeweils nur von einer Seite erfolgt. Ein Nachstellen von Zylindern ist insbesondere bei der Verwendung von flexiblen Hochdruck-Druckplatten auf dem Formzylinder infolge Abnutzungserscheinungen der Druckplatte erforderlich. Die Auswirkungen von sogenannten "Kanalschlägen" werden vermieden. Infolge der Austauschbarkeit der gestellfest gelagerten Formzylinder ist das Druckwerk ebenfalls formatvariabel ausgebildet.The following advantages can be achieved by the invention: The arrangement of support disks enables cylinders to be placed on a cylinder which is fixed to the frame quickly and without play. The adjustable cylinders can also be easily adjusted during operation of the printing unit, since the force acting on a support disk of the forme cylinder is only from one side. Readjustment of cylinders is particularly necessary when using flexible high-pressure printing plates on the forme cylinder as a result of wear and tear on the printing plate. The effects of so-called "channel strikes" are avoided. As a result of the interchangeability of the forme cylinders mounted on the frame, the printing unit is also of variable format.

Die Erfindung wird nachfolgend an einem Ausführungsbeispiel näher erläutert. Die zugehörigen Zeichnungen zeigen in

Fig. 1
eine Vorderansicht auf ein erfindungsgemäßes Druckwerk in einer Teildarstellung,
Fig. 2
einen Schnitt II - II nach Fig. 1.
The invention is explained in more detail below using an exemplary embodiment. The associated drawings show in
Fig. 1
2 shows a front view of a printing unit according to the invention in a partial representation,
Fig. 2
a section II - II of FIG. 1st

Zwei Formzylinder 1, 2 zur Aufnahme von Druckplatten 3 sind über ihre Achszapfen 4, 6 in Seitengestellen 7, 8 in zwei verschiedenen von einander beabstandeten senkrechten sowie parallel zueinander verlaufenden Ebenen 9, 11 gelagert, wobei das zweite Seitengestell 8 in Fig. 2 angedeutet ist. Unterhalb der Formzylinder 1, 2 ist ein in der jeweiligen senkrechten Ebene 9, 11 zu Pfeilrichtung B höhenverstellbarer Schlitten 12, 13 angeordnet, welcher jeweils eine Farbauftragswalze, insbesondere Rasterwalze 14, 16 über ihre Achszapfen 17, 18 aufnimmt. Jede Rasterwalze 14, 16 ist an einen gestellfest gelagerten Formzylinder 1, 2 anstellbar. Oberhalb von Rotationsachsen 19, 21 der Formzylinder 1, 2 ist über seinen Achszapfen 22 (es ist nur ein linker Achszapfen 22 dargestellt, so wie bei den anderen Zylindern 1, 2 und Walzen 14, 16 auch) in einer dritten senkrechten Ebene 23 ein Gegendruckzylinder 24 angeordnet, welcher mit seinem Umfang wahlweise an einen der beiden Formzylinder 1, 2 anstellbar ist. Die dritte, senkrechte Ebene 23 befindet sich mittig zwischen den zwei senkrechten Ebene 9, 11 der Formzylinder 1, 2. Dazu ist der Gegendruckzylinder 24 über seine Achszapfen 22 in einer seitengestellfesten Halterung 26 mittels einer Exzenterlagerung 25 schwenkbar gelagert. Die Formzylinder 1, 2 sowie die Rasterwalzen 14, 16 sind jeweils über ihre Achszapfen 4, 6; 17, 18 und nichtdargestellte Getriebe antreibbar. Unterhalb jeder Rasterwalze 14, 16 ist eine Farbauftragseinrichtung, z. B. Kammerrakel 29, 31 angeordnet.Two forme cylinders 1, 2 for receiving printing plates 3 are mounted via their axle journals 4, 6 in side frames 7, 8 in two different, mutually spaced vertical and parallel planes 9, 11, the second side frame 8 being indicated in FIG. 2 . Beneath the forme cylinders 1, 2 there is a carriage 12, 13 which is height-adjustable in the respective vertical plane 9, 11 to the direction of arrow B and which receives an inking roller, in particular anilox roller 14, 16, via its journal 17, 18. Each anilox roller 14, 16 can be adjusted to a forme cylinder 1, 2 mounted on the frame. Above rotational axes 19, 21 of the forme cylinder 1, 2, a counter-pressure cylinder is shown above its axle journal 22 (only a left axle journal 22 is shown, as is the case with the other cylinders 1, 2 and rollers 14, 16) 24 arranged, which can be adjusted with its circumference either to one of the two forme cylinders 1, 2. The third, Vertical plane 23 is located in the middle between the two vertical planes 9, 11 of the forme cylinder 1, 2. For this purpose, the impression cylinder 24 is pivotably mounted via its axle journals 22 in a bracket 26 fixed to the side frame by means of an eccentric bearing 25. The forme cylinders 1, 2 and the anilox rollers 14, 16 are each via their journal 4, 6; 17, 18 and not shown gear can be driven. Below each anilox roller 14, 16 there is an ink application device, e.g. B. chambered doctor blade 29, 31 arranged.

Jeder Formzylinder 1; 2 weist auf seinem Achszapfen 4, 6 eine Stützscheibe 33, 49; 52, 34 auf, welche konzentrisch zur Rotationsachse 19; 21 des Formzylinders 1; 2 angeordnet ist. Die Stützscheibe 33, 49; 52, 34 besteht zweckmäßigerweise aus einem Kugellager, welches mit seinem Innenring auf dem Achszapfen 19; 21 des Formzylinder 1; 2 aufgepreßt ist und dessen Außenring als Stützscheibe fungiert. Ein Innenring 35 und ein Außenring 40 ist am Beispiel der konzentrischen Stützscheibe 34 gezeigt. Der Achszapfen 22 des Gegendruckzylinders 24 weist zwischen der Halterung 26 und der Stirnseite 36 des Gegendruckzylinders 24 zwei in axialer Richtung des Gegendruckzylinders 24 hintereinander aufgebrachte Stützscheiben 37, 38 auf, welche ebenfalls aus nicht näher bezeichneten Kugellagern bestehen, der Außenring jedoch eine Exzentrizität 27, 28 zur Rotationsachse 39 des Gegendruckzylinders 24 aufweist. Die Exzentrizität 27, 28 ist jeweils "sichelförmig" ausgebildet, d. h. sie ergibt sich aus der Differenz eines Radius r2 zu r1 der Stützscheibe 37, 38, wobei r2 größer ist als r1. Man kann auch sagen, die Hüllkurve der Stützscheiben 37, 38 weisen eine Exzentrizität 27, 28 auf. Dabei fluchtet eine zum Gegendruckzylinder 24 stirnseitennahe Stützscheibe 37 mit der zentrischen Stützscheibe 33 des linken Formzylinders 1 (Fig. 2) und eine zum Gegendruckzylinder 24 stirnseitenferne Stützscheibe 38 mit der zentrischen Stützscheibe 34 des rechten Formzylinders 2. Die auf dem Achszapfen 22 des Gegendruckzylinders 24 aufgebrachten exzentrischen Stützscheiben 37; 38 weisen ebenfalls an ihrem Umfang eine Verzahnung 41; 42 auf, wobei die Verzahnung 41 der stirnseitenfernen Stützscheibe 38 mit einem Zahnrad 43 eines Antriebsmotors 46 und die Verzahnung 42 der stirnseitennahen, exzentrischen Stützscheibe 37 mit einem Zahnrad 44 eines Antriebsmotors 47, z. B. Stellmotors, kämmt. Der besseren Anschaulichkeit halber wurde die Halterung 26 deswegen unterhalb der Zahnräder 43, 44 nur gestrichelt angedeutet.Each forme cylinder 1; 2 has on its journal 4, 6 a support disc 33, 49; 52, 34, which are concentric with the axis of rotation 19; 21 of the forme cylinder 1; 2 is arranged. The support disc 33, 49; 52, 34 suitably consists of a ball bearing, which with its inner ring on the journal 19; 21 of the forme cylinder 1; 2 is pressed and the outer ring acts as a support plate. An inner ring 35 and an outer ring 40 are shown using the example of the concentric support disk 34. The axle journal 22 of the counter-pressure cylinder 24 has two support disks 37, 38, which are arranged one behind the other in the axial direction of the counter-pressure cylinder 24, between the holder 26 and the end face 36 of the counter-pressure cylinder 24, which also consist of ball bearings (not described in more detail), but the outer ring has an eccentricity 27, 28 to the axis of rotation 39 of the impression cylinder 24. The eccentricity 27, 28 is in each case “sickle-shaped”, ie it results from the difference between a radius r2 and r1 of the support disk 37, 38, where r2 is greater than r1. One can also say that the envelope curve of the support disks 37, 38 has an eccentricity 27, 28. In this case, a support disc 37 close to the counter-pressure cylinder 24 on the front side is aligned with the central support disc 33 of the left forme cylinder 1 (FIG. 2) and a support disc 38 remote from the end pressure cylinder 24 with the central support disc 34 of the right-hand forme cylinder 2 eccentric support disks 37; 38 also have teeth 41 on their circumference; 42, wherein the toothing 41 of the support disk 38 remote from the end face with a gear 43 of a drive motor 46 and the toothing 42 of the eccentric support disk 37 close to the end face with a gear 44 of a drive motor 47, e.g. B. servomotor, combs. For the sake of clarity, the holder 26 was therefore only indicated by dashed lines below the gearwheels 43, 44.

Unterhalb der Formzylinder 1; 2 befinden sich die Rasterwalzen 14; 16, welche auf ihren Achszapfen 17; 18 ebenfalls jeweils nicht näher bezeichnete Stützscheiben 48; 51 aufweisen analog der Art, wie bei den exzentrischen Stützscheiben 37; 38 beschrieben. Dabei arbeitet die exzentrische Stützscheibe 48, welche auf den Achszapfen 17 der Rasterwalze 14 aufgebracht ist mit einer auf dem Achszapfen 4 des Formzylinders 1 stirnseitenfern aufgebrachten konzentrischen Stützscheibe 49 zusammen. Andrerseits arbeitet eine auf dem Achszapfen 18 der Rasterwalze 16 befindlicher exzentrische Stützscheibe 51 mit einer zweiten, auf dem Achszapfen 6 in der Nähe des Seitengestells 7 befindlichen konzentrischen Stützscheibe 52 zusammen. Zwischen den Rotationsachsen 53, 54 der Rasterwalzen 14, 16 und den Stützscheiben 48, 51 besteht jeweils eine Exzentrizität 50, 55 auf der Seite der Stützscheiben 48, 51, die dem Formzylinder 1; 2 zugewandt ist. Auf den Stützscheiben 48, 51 befindet sich ebenfalls eine Verzahnung 56, 57, welche jeweils mit einem Zahnrad 58, 59 kämmt, welches jeweils mit einem Antriebsmotor 61, 62 formschlüssig verbunden ist. Das bei der Exzentrizität 27, 28 Gesagte trifft auch für die Exzentrizität 50, 55 zu.Below the forme cylinder 1; 2 are the anilox rollers 14; 16, which on their journals 17; 18 support disks 48; 51 have analogous to the way in which the eccentric support disks 37; 38 described. The eccentric support disk 48 works, which is applied to the journal 17 of the anilox roller 14 is together with a concentric support disc 49 mounted on the journal 4 of the forme cylinder 1 remote from the end face. On the other hand, an eccentric support disk 51 located on the journal 18 of the anilox roller 16 cooperates with a second concentric support disk 52 located on the journal 6 in the vicinity of the side frame 7. Between the axes of rotation 53, 54 of the anilox rollers 14, 16 and the support disks 48, 51 there is in each case an eccentricity 50, 55 on the side of the support disks 48, 51 which corresponds to the forme cylinder 1; 2 is facing. On the support disks 48, 51 there is also a toothing 56, 57 which meshes with a gear 58, 59, which is each positively connected to a drive motor 61, 62. What has been said about eccentricity 27, 28 also applies to eccentricity 50, 55.

Während des Betriebszustandes, bei welchem der Gegendruckzylinder 24 an den linken Formzylinder 1 angestellt ist sowie die Rasterwalze 14 an den Formzylinder 1 angestellt ist, wirkt folgender Kräftezug: Die konzentrische Stützscheibe 33 ist kraftschlüssig in Kontakt mit der exzentrisch anstellbaren stirnseitennahen Stützscheibe 37 des Gegendruckzylinder 24. Weiterhin ist die konzentrische Stützscheibe 49 des Formzylinders 1 kraftschlüssig in Kontakt mit der exzentrischen Stützscheibe 48 der Rasterwalze 14, so daß bei Abrieb einer Druckplatte (nicht gezeigt auf Formzylinder 1) ein Nachstellen des Gegendruckzylinders 24 sowie der Rasterwalze 14 erfolgen kann, indem die Exzentrizität 27, 28 der Stützscheiben 37, 48 vergrößert wird, nach dem die Antriebsmotoren 47, 61 eingeschaltet werden. Dadurch, daß jeweils nur zwei Stützscheiben 33, 37; 48, 49 gegeneinanderwirken (paarweise), sind nur geringe Kräfte erforderlich, um ein Nachstellen der Zylinder 14, 24 an den Formzylinder 1 zu bewirken. Dabei drehen sich die Achszapfen 4, 17, 22 der Zylinder 1, 14, 24 jeweils zusammen mit den Innenringen (z. B. bei Stützscheibe 34 mit Innenring 35 dargestellt), während die Außenringe (dargestellt mit Außenring 40 bei Stützscheibe 34) aufeinander stehen, d. h. sich bei paarweisen gegenseitigen Aufeinanderpressen nicht bewegen.During the operating state, in which the impression cylinder 24 is positioned on the left forme cylinder 1 and the anilox roller 14 is positioned on the form cylinder 1, the following force is exerted: the concentric support disc 33 is non-positively in contact with the support disc 37 of the impression cylinder 24 that can be adjusted eccentrically near the end face. Furthermore, the concentric support disk 49 of the forme cylinder 1 is non-positively in contact with the eccentric support disk 48 of the anilox roller 14, so that when a printing plate is worn (not shown on forme cylinder 1) the counter-pressure cylinder 24 and the anilox roller 14 can be readjusted by increasing the eccentricity 27, 28 of the support disks 37, 48 after the drive motors 47, 61 are switched on. The fact that only two support disks 33, 37; 48, 49 act against each other (in pairs), only small forces are required to adjust the cylinders 14, 24 on the forme cylinder 1. The axle journals 4, 17, 22 of the cylinders 1, 14, 24 each rotate together with the inner rings (for example, shown with support plate 34 with inner ring 35), while the outer rings (shown with outer ring 40 for support plate 34) stand on one another , ie do not move when pressed against each other in pairs.

Soll nun der rechte Formzylinder 2 in Betrieb genommen werden, so wird die Halterung 26 mittels der Exzenterlagerung 25 nach rechts gestellt (Fig. 2), so daß sich der Umfang des Gegendruckzylinders 24 mit dem Umfang des Formzylinders 2 berührt. Weiterhin hat die exzentrische Stützscheibe 38 des Gegendruckzylinders 24 kraftschlüssigen Kontakt mit der konzentrischen Stützscheibe 34 des Formzylinders 2. Die sich ebenfalls auf dem Achszapfen 6 des Formzylinders 2 befindliche konzentrische Stützscheibe 52 hat kraftschlüssigen Kontakt mit der exzentrischen Stützscheibe 51 der rechten Rasterwalze 16, so daß immer nur zwei Stützscheiben 38, 34; 52, 51 aufeinander wirken, wodurch eine leichte Einstellbarkeit des Gegendruckzylinders 24 sowie der Rasterwalze 16 an den Formzylinder 2 gegeben ist. Die Verzahnungen 41, 42, 56, 57 der Stützscheiben 38, 37, 48, 51 betragen jeweils ca. 30 Bogengrad auf dem Umfang des jeweiligen Außenringes.If the right forme cylinder 2 is now to be put into operation, the holder 26 is set to the right by means of the eccentric bearing 25 (FIG. 2), so that the circumference of the impression cylinder 24 touches the circumference of the forme cylinder 2. Furthermore, the eccentric support plate 38 of the counter-pressure cylinder 24 has non-positive contact with the concentric support plate 34 of the forme cylinder 2. The concentric support plate 52, which is also located on the journal 6 of the forme cylinder 2, has non-positive contact with the eccentric support plate 51 of the right anilox roller 16, so that always only two support disks 38, 34; 52, 51 interact, whereby the impression cylinder 24 and the anilox roller 16 on the forme cylinder 2 are easy to adjust. The toothings 41, 42, 56, 57 of the support disks 38, 37, 48, 51 each amount to approximately 30 degrees of arc on the circumference of the respective outer ring.

Es versteht sich, daß die in Fig. 1 nicht dargestellte Seite der Zylinder 1, 2, 14, 16, 24 mit den Achszapfen ebenso mit Stützscheiben, sowohl exzentrischen für anstellbare Zylinder und konzentrische für gestellfeste Zylinder, versehen sind, wie vorstehend beschrieben wurde. Das Gleiche gilt für die Antriebe der exzentrischen Stützscheiben.It is understood that the side of the cylinders 1, 2, 14, 16, 24 not shown in Fig. 1 with the axle journals are also provided with supporting disks, both eccentric for adjustable cylinders and concentric for frame-fixed cylinders, as described above. The same applies to the drives of the eccentric support disks.

Es ist auch möglich, die konzentrischen Stützscheiben 33, 34, 49, 52 so auszubilden, daß von ihrer Kreisform rechts und links ein Kreisabschnitt weggenommen wird, wobei die Sekanten der Kreisabschnitte parallel zueinander verlaufen. Mittels gestellfeste, nicht dargestellter Halteeinrichtungen werden diese Stützscheiben 33, 34, 49, 52 dann gegen Verdrehen gesichert. Die Achszapfen 4, 6 sind dann z. B. in Gleitlagern der konzentrischen Stützscheiben 33, 34, 49, 52 gelagert. Dies gilt sinngemäß auch für die Ausbildung der Stützscheiben 48, 51, 37, 38.It is also possible to design the concentric support disks 33, 34, 49, 52 such that a circular section is removed from their circular shape on the right and left, the secants of the circular sections running parallel to one another. These supporting disks 33, 34, 49, 52 are then secured against rotation by means of holding devices which are fixed to the frame and are not shown. The journal 4, 6 are then z. B. in plain bearings of the concentric support discs 33, 34, 49, 52. This also applies analogously to the design of the support disks 48, 51, 37, 38.

TeilelisteParts list

11
FormzylinderForme cylinder
22nd
FormzylinderForme cylinder
33rd
Druckplatteprinting plate
44th
Achszapfen (1)Axle journal (1)
55
--
66
Achszapfen (2)Journal (2)
77
SeitengestellSide frame
88th
SeitengestellSide frame
99
Ebene, senkrecht (1)Plane, vertical (1)
1010th
--
1111
Ebene, senkrecht (2)Plane, vertical (2)
1212th
Schlittencarriage
1313
Schlittencarriage
1414
Rasterwalze (9)Anilox roller (9)
1515
--
1616
Rasterwalze (11)Anilox roller (11)
1717th
Achszapfen (14)Journal (14)
1818th
Achszapfen (16)Journal (16)
1919th
Rotationsachse (1)Rotation axis (1)
2020th
--
2121
Rotationsachse (2)Rotation axis (2)
2222
Achszapfen (24)Axle journal (24)
2323
Ebene, senkrecht (24)Level, vertical (24)
2424th
GegendruckzylinderImpression cylinder
2525th
--
2626
Halterungbracket
2727
Exzentrizität (37)Eccentricity (37)
2828
Exzentrizität (38)Eccentricity (38)
2929
Kammerrakel (14)Doctor blade (14)
3030th
--
3131
Kammerrakel (16)Doctor blade (16)
3232
Druckplatteprinting plate
3333
Stützscheibe, konzentrisch (1)Support disc, concentric (1)
3434
Stützscheibe, konzentrisch (2)Support disc, concentric (2)
3535
Innenring (34)Inner ring (34)
3636
Stirnseite (24)End face (24)
3737
Stützscheibe, exzentrisch, stirnseitennah (24, 33)Support disc, eccentric, close to the face (24, 33)
3838
Stützscheibe, exzentrisch, stirnseitenfern (24, 34)Support disc, eccentric, remote from the face (24, 34)
3939
Rotationsachse (24)Rotation axis (24)
4040
Außenring (34)Outer ring (34)
4141
Verzahnung (38)Toothing (38)
4242
Verzahnung (37)Toothing (37)
4343
Zahnrad (41)Gear (41)
4444
Zahnrad (42)Gear (42)
4545
--
4646
Antriebsmotor (43)Drive motor (43)
4747
Antriebsmotor (44)Drive motor (44)
4848
Stützscheibe, exzentrisch (14)Support disc, eccentric (14)
4949
Stützscheibe, konzentrisch (1)Support disc, concentric (1)
5050
Exzentrizität (48)Eccentricity (48)
5151
Stützscheibe, exzentrisch (16)Support disc, eccentric (16)
5252
Stützscheibe, konzentrisch (2)Support disc, concentric (2)
5353
Rotationsachse (14)Rotation axis (14)
5454
Rotationsachse (16)Rotation axis (16)
5555
Exzentrizität (51)Eccentricity (51)
5656
Verzahnung (48)Toothing (48)
5757
Verzahnung (51)Toothing (51)
5858
Zahnrad (61)Gear (61)
5959
Zahnrad (62)Gear (62)
6060
--
6161
Antriebsmotor (58)Drive motor (58)
6262
Antriebsmotor (59)Drive motor (59)
AA
Ansichtview
BB
Bewegungsrichtung, Schlitten (12, 13)Direction of movement, slide (12, 13)
r1r1
Radius Stützscheibe (37, 38)Radius support disc (37, 38)
r2r2
Radius Exzentrizität (27, 28)Radius eccentricity (27, 28)

Claims (8)

Druckwerk für eine Rotationsdruckmaschine zur Durchführung eines fliegenden Druckplattenwechsels mit einem ersten und einem zweiten Formzylinder (1; 2), einer an die Formzylinder (1; 2) wirkenden Farbauftragswalze (14; 16) sowie einem wahlweise gegen einen der beiden Formzylinder (1; 2) anstellbaren Gegendruckzylinder (24), dadurch gekennzeichnet, daß auf sämtlichen Achszapfen (4, 6; 17, 18; 22) aller Zylinder (1, 2; 14, 16; 24) zumindest jeweils eine Stützscheibe (33, 34, 49, 52; 48, 51; 37, 38) angeordnet ist, in welcher der jeweilige Achszapfen (4; 6; 17; 18; 22) rotierbar gelagert ist, daß auf jedem Achszapfen (4; 6) des Formzylinders (1; 2) zwei kreisrunde oder am Umfang mindestens zwei voneinander beabstandete Kreisabschnitte aufweisende, in Längsachsenrichtung des Formzylinders (1; 2) gesehen, hintereinander angeordnete Stützscheiben (33, 49; 52, 34) gelagert sind, daß auf jedem Achszapfen (17; 18) der Farbauftragswalze (14; 16) eine Stützscheibe (48; 51) angeordnet ist, daß auf jedem Achszapfen (22) des Gegendruckzylinders (24) zwei, in Längsachsenrichtung des Gegendruckzylinders (24) gesehen, hintereinander angeordnete Stützscheiben (38; 37) angeordnet sind, daß eine Hüllkurve der auf den Achszapfen (17; 18; 22) der Farbauftragswalze (14; 16) sowie des Gegendruckzylinders (24) angeordneten Stützscheiben (48; 51; 38; 37) eine Exzentrizität (27, 28; 50, 55) aufweist, daß auf unmittelbar benachbarten unterschiedlichen Achszapfen (4; 6; 17; 18; 22) angeordnete Stützscheiben (33, 49; 52, 34; 48, 51; 38, 37) über ihre Kontaktflächen am Umfang jeweils paarweise (38, 34; 52, 51 oder 37, 33; 49, 48) zusammenwirken, daß die die Exzentrizität (27, 28; 50, 55) aufweisenden Stützscheiben (48; 51; 38; 37) definiert verdrehbar ausgebildet sind.Printing unit for a rotary printing machine for performing a flying printing plate change with a first and a second forme cylinder (1; 2), an inking roller (14; 16) acting on the forme cylinder (1; 2) and optionally against one of the two forme cylinders (1; 2 ) adjustable counter-pressure cylinder (24), characterized in that on all axle journals (4, 6; 17, 18; 22) of all cylinders (1, 2; 14, 16; 24) at least one support disk (33, 34, 49, 52 ; 48, 51; 37, 38) is arranged in which the respective axle journal (4; 6; 17; 18; 22) is rotatably mounted, that on each axle journal (4; 6) of the forme cylinder (1; 2) two circular ones or on the circumference at least two spaced apart circular sections, seen in the longitudinal axis direction of the forme cylinder (1; 2), one behind the other arranged support disks (33, 49; 52, 34) are mounted so that on each journal (17; 18) of the inking roller (14; 16) a support disc (48; 51) is arranged t that on each axle journal (22) of the impression cylinder (24) two support disks (38; 37) are arranged such that an envelope curve of the support disks (48; 51; 38; 37) arranged on the axle journal (17; 18; 22) of the inking roller (14; 16) and of the impression cylinder (24) has an eccentricity (27, 28; 50, 55) has that on immediately adjacent different axle journals (4; 6; 17; 18; 22) arranged support disks (33, 49; 52, 34; 48, 51; 38, 37) via their contact surfaces on the circumference in pairs (38, 34; 52, 51 or 37, 33; 49, 48) cooperate so that the eccentricity (27, 28; 50, 55) having support disks (48; 51; 38; 37) are designed to be rotatable in a defined manner. Druckwerk nach Anspruch 1, dadurch gekennzeichnet, daß die an den Formzylinder (1; 2) anstellbare Farbauftragswalze (14; 16) als höhenverstellbare (B) Rasterwalze (14; 16) ausgebildet ist, an welche eine Kammerrakel (29; 31) anstellbar ist.Printing unit according to claim 1, characterized in that the inking roller (14; 16) which can be set on the forme cylinder (1; 2) is designed as a height-adjustable (B) anilox roller (14; 16) against which a chamber doctor blade (29; 31) can be set . Druckwerk nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß der an den Formzylinder (1; 2) anstellbare Gegendruckzylinder (24) schwenkbar gelagert ist.Printing unit according to claims 1 and 2, characterized in that the counter-pressure cylinder (24) which can be set on the forme cylinder (1; 2) is pivotably mounted. Druckwerk nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß der Formzylinder (1; 2) mit flexiblen Druckplatten (3) versehen ist.Printing unit according to claims 1 to 3, characterized in that the forme cylinder (1; 2) is provided with flexible printing plates (3). Druckwerk nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß als Stützscheibe (33, 34, 49, 52) ein Kugellager verwendet wird, dessen Innenring (35) mit dem Achszapfen (4; 6) des gestellfest gelagerten Zylinders (1; 2) verbunden ist, dessen kreisrunder Außenring (40) als stillstehender Laufring ausgebildet ist.Printing unit according to claims 1 to 4, characterized in that a ball bearing is used as the support disc (33, 34, 49, 52), the inner ring (35) of which with the axle journal (4; 6) of the cylinder (1; 2) mounted on the frame is connected, the circular outer ring (40) formed as a stationary race is. Druckwerk nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, daß als Stützscheibe (48, 51; 37, 38) ein Kugellager (48, 51; 37, 38) verwendet wird, dessen Innenring (35) mit dem Achszapfen (17, 18; 22) des anstellbaren Zylinder (14, 16; 24) verbunden ist, dessen einen Exzentrizität (27, 28; 50, 55) aufweisende Stützscheibe als stillstehender Laufring ausgebildet ist.Printing unit according to claims 1 to 6, characterized in that a ball bearing (48, 51; 37, 38) is used as the support disc (48, 51; 37, 38), the inner ring (35) of which is connected to the axle journal (17, 18; 22) of the adjustable cylinder (14, 16; 24), whose eccentricity (27, 28; 50, 55) supporting disc is designed as a stationary race. Druckwerk nach den Ansprüchen 1 und 6, dadurch gekennzeichnet, daß die eine Exzentrizität (27, 28; 50, 55) aufweisenden Stützscheiben (48, 51; 37, 38) an ihrer äußeren Kontaktfläche (40) eine Verzahnung (41, 42; 56, 57) aufweisen, die formschlüssig mit einem Antrieb (43, 46; 44, 47; 58, 61; 59, 62) in Verbindung steht.Printing unit according to claims 1 and 6, characterized in that the support disks (48, 51; 37, 38) having an eccentricity (27, 28; 50, 55) have teeth (41, 42; 56) on their outer contact surface (40) , 57), which is positively connected to a drive (43, 46; 44, 47; 58, 61; 59, 62). Druckwerk nach Anspruch 1, dadurch gekennzeichnet, daß jeweils eine der beiden Stützscheiben (38 oder 37) des Gegendruckzylinders (24) alternativ mit je einer zweiten auf einem Achszapfen (4 oder 6) eines Formzylinders (1 oder 2) befindlichen Stützscheibe (34 oder 33) in Berührung bringbar angeordnet ist.Printing unit according to claim 1, characterized in that in each case one of the two support disks (38 or 37) of the counter-pressure cylinder (24) alternatively with a second support disk (34 or 33) located on an axle journal (4 or 6) of a forme cylinder (1 or 2) ) can be brought into contact.
EP94120168A 1993-12-24 1994-12-20 Printing unit for a rotary printing machine Expired - Lifetime EP0659554B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4344365 1993-12-24
DE4344365A DE4344365C2 (en) 1993-12-24 1993-12-24 Printing unit for a rotary printing machine

Publications (3)

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EP0659554A2 true EP0659554A2 (en) 1995-06-28
EP0659554A3 EP0659554A3 (en) 1996-11-27
EP0659554B1 EP0659554B1 (en) 1998-06-10

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EP94120168A Expired - Lifetime EP0659554B1 (en) 1993-12-24 1994-12-20 Printing unit for a rotary printing machine

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EP (1) EP0659554B1 (en)
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Publication number Priority date Publication date Assignee Title
DE19501243C5 (en) * 1995-01-17 2004-01-29 Maschinenfabrik Wifag Bearings bearing for a cylinder of a rotary printing machine
DE19519141A1 (en) * 1995-05-30 1996-12-05 Fischer & Krecke Gmbh & Co Flexo printing machine with variable print length
GB2366243B (en) * 2000-09-02 2004-02-18 Crabtree Gateshead Ltd A flexographic printing cartridge
JP4276010B2 (en) * 2003-07-24 2009-06-10 株式会社小森コーポレーション Driving device in printing press
DE102008046792A1 (en) * 2007-09-20 2009-04-02 Heidelberger Druckmaschinen Ag Printing machine with bearer rings
US20100282102A1 (en) * 2009-05-08 2010-11-11 Mehdizadeh Sharmin Label printing cylinder and process
DE102017222700A1 (en) * 2017-07-17 2019-01-17 Heidelberger Druckmaschinen Ag Printing machine with twin printing unit and method for operating such a printing press

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US3196788A (en) * 1962-03-19 1965-07-27 Michle Goss Dexter Inc Bearer ring desing for four cooperating cylinders
DE1253282B (en) * 1962-08-16 1967-11-02 Goebel Gmbh Maschf Printing unit with support rings arranged on both sides of the forme and impression cylinders on their shafts
EP0234456A2 (en) * 1986-02-17 1987-09-02 OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. Supplementary printing unit
EP0277545A2 (en) * 1987-01-31 1988-08-10 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Apparatus for mounting a reel core on a printing cylinder

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US2051573A (en) * 1932-01-22 1936-08-18 Hoe & Co R Late news mechanism for printing machines
GB1088658A (en) * 1964-09-10 1967-10-25 Miehle Goss Dexter Inc Printing presses

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Publication number Priority date Publication date Assignee Title
US3196788A (en) * 1962-03-19 1965-07-27 Michle Goss Dexter Inc Bearer ring desing for four cooperating cylinders
DE1253282B (en) * 1962-08-16 1967-11-02 Goebel Gmbh Maschf Printing unit with support rings arranged on both sides of the forme and impression cylinders on their shafts
EP0234456A2 (en) * 1986-02-17 1987-09-02 OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. Supplementary printing unit
EP0277545A2 (en) * 1987-01-31 1988-08-10 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Apparatus for mounting a reel core on a printing cylinder

Also Published As

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EP0659554B1 (en) 1998-06-10
DE59406202D1 (en) 1998-07-16
DE4344365C2 (en) 1997-09-18
EP0659554A3 (en) 1996-11-27
JP2801547B2 (en) 1998-09-21
DE4344365A1 (en) 1995-06-29
US5447101A (en) 1995-09-05
JPH07205392A (en) 1995-08-08

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