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EP0353652B1 - Additional device for attachment to an offset-printing machine - Google Patents

Additional device for attachment to an offset-printing machine Download PDF

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Publication number
EP0353652B1
EP0353652B1 EP89113987A EP89113987A EP0353652B1 EP 0353652 B1 EP0353652 B1 EP 0353652B1 EP 89113987 A EP89113987 A EP 89113987A EP 89113987 A EP89113987 A EP 89113987A EP 0353652 B1 EP0353652 B1 EP 0353652B1
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EP
European Patent Office
Prior art keywords
cylinder
toothed wheel
forming cylinder
accessory
printing machine
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.)
Expired - Lifetime
Application number
EP89113987A
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German (de)
French (fr)
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EP0353652A3 (en
EP0353652A2 (en
Inventor
Andreas Wilke
Max Wolgschaft
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.)
Rena Informationstechnik & Co KG GmbH
Original Assignee
Rena Informationstechnik & Co KG GmbH
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Publication date
Application filed by Rena Informationstechnik & Co KG GmbH filed Critical Rena Informationstechnik & Co KG GmbH
Publication of EP0353652A2 publication Critical patent/EP0353652A2/en
Publication of EP0353652A3 publication Critical patent/EP0353652A3/en
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Publication of EP0353652B1 publication Critical patent/EP0353652B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F7/00Rotary lithographic machines
    • B41F7/02Rotary lithographic machines for offset printing
    • B41F7/08Rotary lithographic machines for offset printing using one transfer cylinder co-operating with several forme cylinders for printing on sheets or webs, e.g. sampling of colours on one transfer cylinder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/10Forme cylinders
    • B41F13/12Registering devices
    • B41F13/14Registering devices with means for displacing the cylinders

Definitions

  • the invention relates to an additional device for mounting on an offset printing press with the features of the preamble of patent claim 1.
  • Such an additional device is known, for example, from FR-A 1 528 114.
  • This additional device is intended, for example, to upgrade an existing printing press for printing a second color and has a further forme cylinder and devices for applying ink to the forme cylinder and for moistening it.
  • adjusting devices for adjusting the forme cylinder are designed in the axial direction and in the circumferential direction.
  • the adjustment of the forme cylinder in the circumferential direction for adjusting the images in their longitudinal direction is carried out by the adjustable arrangement or assembly of the drive gear on the forme cylinder.
  • the sensitive adjustment of the forme cylinder in the circumferential direction is therefore only possible to a limited extent or with great design effort.
  • FR-A 2 242 243 proposed to effect the adjustment of the forme cylinder in the circumferential direction by the axial displacement of a drive gear mounted by means of two bearings with helical teeth, whereby the axially sliding movement of the drive gear in connection with the helical teeth causes movement of the forme cylinder in the circumferential direction.
  • a disadvantage of this device is the mounting of the drive gear on an axially adjustable bearing journal which is screwed into a threaded bushing seated in the machine frame, the bearing play which is hardly avoidable in this type of mounting having a disadvantageous effect on the precision in the adjustment of the forme cylinder in the circumferential direction.
  • a device on rotary printing presses for setting the side and the circumferential register in which both for the adjustment of the forme cylinder in the axial direction as well as for the adjustment in the circumferential direction are arranged in the two at the ends of the forme cylinder
  • a sliding bushing is arranged in each case, which is connected to a ring gear that can be adjusted on the cylinder bearing.
  • an axial displacement of the cylinder is achieved in that the sliding bush in question is supported by a thrust bearing on a disk attached to the end of the cylinder journal.
  • the adjustment of the cylinder in the circumferential direction is achieved in that the sliding bush in question is supported at the other end of the forme cylinder via a further thrust bearing on an obliquely toothed drive gear which is displaceably mounted on the relevant cylinder journal against the force of compression springs, the compression springs with their the other end act on a drive plate arranged on the end face of the relevant journal.
  • both the bearing play of the adjusting device for the circumferential direction and the bearing play the adjusting device for the axial adjustment of the forme cylinder is practically eliminated by the compression springs, however, the use of two sliding bushes for the cylinder bearings and the arrangement of two disks at the ends of the bearing pins involve a relatively large amount of design effort.
  • the disadvantage of the arrangement of the two disks at the ends of the cylinder journals is that the side frame in which the cylinder bearings are arranged cannot simultaneously function as a casing for the machine, but rather to protect the operator, the moving parts are covered by additional casings Need to become.
  • the invention is therefore based on the object of avoiding these disadvantages and of creating an add-on device or additional device which can be attached to existing offset printing presses and which enables the print image to be adjusted in a simple manner and with high accuracy with little design complexity and small size.
  • the gear wheel which can be fastened on the blanket cylinder of the offset printing press consists of at least two segments. This allows the gear to be fixed in the offset press without removing the blanket cylinder, i.e. without having to disassemble the existing printing press when installing the additional device.
  • the gear segments expediently have an annular groove into which a reinforcing ring consisting of segments is inserted is inserted and attached, the segment ends of which are arranged offset from the segment ends of the gear.
  • brackets which are fastened to the housing on the additional device are provided and have bores which are aligned with existing threaded bores on the upper side of the frame of the offset printing press.
  • Such threaded holes are made by the manufacturer there to enable screwing in of the hook or a lifting device.
  • the offset printing press 1 has in FIG known manner on a printing unit driven by gears that essentially consists of a forme cylinder 3, a blanket cylinder 4 and an inking unit 5.
  • the forme cylinder 3 serves to receive and fix the printing film.
  • the print image of this printing film is transferred after application of the printing ink during rotation from the forme cylinder 3 to the blanket cylinder 4 and then printed during the same printing cycle on a printing material passed between the blanket cylinder 4 and a (not shown) impression cylinder
  • the additional device has a further forme cylinder 6 which is mounted in the housing 7 of the additional device. It is provided with paint in a known manner on various rollers.
  • the ink fountain roller 8 transfers the ink from an ink fountain 9 via an ink lifter 10 via ink fountain pens 11 and ink application rollers 12 to the forme cylinder 6.
  • a water basin 14 via a dampening roller 13, a dampening lifter 15, a dampening roller 16 and a dampening application roller 17 Transfer moisture to the forme cylinder 6.
  • An essential feature of the invention can now be seen in the fact that the forme cylinder 6 is driven by a drive gear 18 which is fixedly connected to it and which has helical teeth. This helical toothing engages in the helical toothing of a drive gear 19 which is mounted on the end face of the blanket cylinder 4 of the offset printing press 1.
  • the drive gear 19 is constructed from several, in the exemplary embodiment shown, from two circular segments 19A, 19B, as can be seen in particular from FIG. 2.
  • the reinforcement ring 20 which is also divided into segments 20A and 20B, additionally fixes the segments 19A, 19B of the drive gear 19 in their position. They engage in an annular groove 19D of the gear wheel 19 and their segment ends 20C are offset by 90 ° against the segment ends 19C of the gear wheel 19.
  • the attachment to the front of the blanket cylinder 4 is done by screws
  • the forme cylinder 6 is adjustable along its axis by a side register 21.
  • a longitudinal register 22 enables displacement of the drive gear 18 relative to the forme cylinder 6 to rotate it in the circumferential direction, relative to the blanket cylinder of the offset printing press. Details of the two registers will be described later.
  • the additional device according to the invention can be fastened to the housing 1 of the offset printing machine via brackets 23 which are fastened to its housing 7.
  • brackets 23 have in their upper part a hinge joint 24 with which they are articulated to the actual fastening part 25.
  • In this fastening part 25 are Bores are provided which are aligned with threaded bores already provided in the upper part of the frame of the offset printing press 1. These threaded holes are in themselves intended for the use of hooks which serve to lift and transport the machine.
  • screws 26 are screwed into these bores, with which fastening parts 25 of the bracket 23 of the additional device can be fastened.
  • the rotary knob 21 of the side register is connected via an axis 27, which is mounted in the housing 7, to a toothed wheel 28, which is in engagement with a toothed wheel 29, which has an internal thread.
  • This internal thread is in engagement with a thread 30 of a cylinder 31, in which a core shaft 32 is mounted.
  • the forme cylinder 6 has a cylindrical sleeve 34 and is supported by a roller bearing 35.
  • An axial bearing 36 is arranged between the gear wheel 29 and the sleeve 34.
  • the core shaft 32 is mounted in a sleeve 37.
  • a gearwheel 39 is fastened to a rotary knob 22 via an axis 38, which meshes with a toothed pin 40 which is connected to a washer 41 which has an internal thread, that is engaged with the thread 42.
  • the disk 41 presses against an axial bearing 47, which is mounted in an annular groove 18A of the drive gear for the forme cylinder 6.
  • the gear wheel 18 is connected to the forme cylinder 6 by means of stud bolts 43 which are displaceable in recesses 44 in the cylinder body of the forme cylinder 6.
  • Several, preferably 6, such stud bolts 43 are evenly distributed over the circumference.
  • the same number of compression springs 45 is mounted in recesses in the gear wheel 18 and presses the body of the forme cylinder 6 in the direction of the side register 21.
  • the gear 18 is thus relative to the cylinder body, i. H. moved to the forme cylinder 6 so that it undergoes a slight rotation in the circumferential direction as a result of the helical teeth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

The additional device for attachment to an offset-printing machine (1), which has at least one forme cylinder (3), a blanket cylinder (offset cylinder) (4) and a back pressure cylinder, is fitted with a further forme cylinder (6) which can be brought into engagement via a toothed wheel (18) with a toothed wheel (19) of the offset-printing machine (1), which toothed wheel (19) is appropriately equipped and is attached to the blanket cylinder (4). The forme cylinder (6) of the additional device can be adjusted along its axis and in the circumferential direction. <IMAGE>

Description

Die Erfindung betrifft eine Zusatzeinrichtung zum Anbau an eine Offset-Druckmaschine mit den Merkmalen des Oberbegriffs des Patantanspruchs 1.The invention relates to an additional device for mounting on an offset printing press with the features of the preamble of patent claim 1.

Eine derartige Zusatzeinrichtung ist bspw. aus der FR-A 1 528 114 bekannt. Diese Zusatzeinrichtung ist bspw. zur Aufrüstung einer bereits vorhandenen Druckmaschine zum Druck einer zweiten Farbe gedacht und weist einen weiteren Formzylinder sowie Einrichtungen zum Farbauftrag auf den Formzylinder und zu dessen Befeuchtung auf. Zur erforderlichen Justierung des auf dem Formzylinder der Zusatzeinrichtung aufgebrachten Druckbildes relativ zum Druckbild des Formzylinders der bereits vorhandenen Maschine sind Verstelleinrichtungen zur Justierung des Formzylinders in axialer Richtung und in Umfangrichtung ausgebildet. Die Verstellung des Formzylinders in Umfangsrichtung zur Justage der Bilder in deren Längsrichtung erfolgt dabei durch die einstellbare Anordnung bzw. Montage des Antriebszahnrades an dem Formzylinder. Die feinfühlige Verstellung des Formzylinders in Umfangsrichtung ist daher nur eingeschränkt oder mit großem konstruktivem Aufwand möglich.Such an additional device is known, for example, from FR-A 1 528 114. This additional device is intended, for example, to upgrade an existing printing press for printing a second color and has a further forme cylinder and devices for applying ink to the forme cylinder and for moistening it. For the necessary adjustment of the printed image applied to the forme cylinder of the additional device relative to the printed image of the forme cylinder of the already existing machine, adjusting devices for adjusting the forme cylinder are designed in the axial direction and in the circumferential direction. The adjustment of the forme cylinder in the circumferential direction for adjusting the images in their longitudinal direction is carried out by the adjustable arrangement or assembly of the drive gear on the forme cylinder. The sensitive adjustment of the forme cylinder in the circumferential direction is therefore only possible to a limited extent or with great design effort.

Zur Lösung dieses Problems wird in der FR-A 2 242 243, allerdings für eine Druckvorrichtung für zwei oder mehr Farben, vorgeschlagen, die Verstellung des Formzylinders in Umfangsrichtung durch das axiale Verschieben eines mittels zweier Lager gelagerten Antriebszahnrades mit Schrägverzahnung zu bewirken, wobei durch die axiale Schiebebewegung des Antriebszahnrades in Verbindung mit der Schrägverzahnung eine Bewegung des Formzylinders in Umfangsrichtung erreicht wird.To solve this problem, FR-A 2 242 243, however for a printing device for two or more colors, proposed to effect the adjustment of the forme cylinder in the circumferential direction by the axial displacement of a drive gear mounted by means of two bearings with helical teeth, whereby the axially sliding movement of the drive gear in connection with the helical teeth causes movement of the forme cylinder in the circumferential direction.

Nachteilig bei dieser Vorrichtung ist die Lagerung des Antriebszahnrades auf einem axial verstellbaren Lagerzapfen, welcher in eine im Maschinengestell sitzende Gewindebüchse eingeschraubt ist, wobei sich das bei dieser Art der Lagerung kaum vermeidbare Lagerspiel nachteilig auf die Präzision bei der Justierung des Formzylinders in Umfangsrichtung auswirkt.A disadvantage of this device is the mounting of the drive gear on an axially adjustable bearing journal which is screwed into a threaded bushing seated in the machine frame, the bearing play which is hardly avoidable in this type of mounting having a disadvantageous effect on the precision in the adjustment of the forme cylinder in the circumferential direction.

Schließlich ist aus der FR-A 2 369 091 eine Vorrichtung an Rotationsdruckmaschinen zum Einstellen des Seiten- und des Umfangsregisters bekannt, bei der sowohl zur Verstellung des Formzylinders in axialer Richtung als auch zu dessen Verstellung in Umfangsrichtung in den beiden an den Enden des Formzylinders angeordneten Zylinderlagern jeweils eine Schiebebüchse angeordnet ist, welche mit einem am Zylinderlager einstellbaren Zahnkranz verbunden ist. Hierbei wird eine axiale Verschiebung des Zylinders dadurch erreicht, daß sich die betreffende Schiebebüchse über ein Drucklager an einer am Ende des Zylinderzapfens befestigten Scheibe abstützt. Die Verstellung des Zylinders in Umfangsrichtung wird dadurch erreicht, daß sich die betreffende Schiebebüchse am anderen Ende des Formzylinders über ein weiteres Drucklager an einem schräg verzahnten Antriebszahnrad abstützt, welches gegen die Kraft von Druckfedern verschiebbar auf dem betreffenden Zylinderzapfen gelagert ist, wobei die Druckfedern mit ihrem anderen Ende eine an der Stirnseite des betreffenden Lagerzapfens angeordnete Mitnehmerscheibe beaufschlagen.Finally, from FR-A 2 369 091 a device on rotary printing presses for setting the side and the circumferential register is known, in which both for the adjustment of the forme cylinder in the axial direction as well as for the adjustment in the circumferential direction are arranged in the two at the ends of the forme cylinder A sliding bushing is arranged in each case, which is connected to a ring gear that can be adjusted on the cylinder bearing. In this case, an axial displacement of the cylinder is achieved in that the sliding bush in question is supported by a thrust bearing on a disk attached to the end of the cylinder journal. The adjustment of the cylinder in the circumferential direction is achieved in that the sliding bush in question is supported at the other end of the forme cylinder via a further thrust bearing on an obliquely toothed drive gear which is displaceably mounted on the relevant cylinder journal against the force of compression springs, the compression springs with their the other end act on a drive plate arranged on the end face of the relevant journal.

Bei dieser Vorrichtung wird zwar sowohl das Lagerspiel der Verstelleinrichtung für die Umfangsrichtung als auch das Lagerspiel der Verstelleinrichtung für die axiale Verstellung des Formzylinders durch die Druckfedern praktisch eliminiert, jedoch ist mit der Verwendung zweier Schiebebüchsen für die Zylinderlager und mit der Anordnung zweier Scheiben an den Enden der Lagerzapfen ein relativ großer konstruktiver Aufwand verbunden. Zudem resultiert insbesondere aus der Anordnung der beiden Scheiben an den Enden der Zylinderzapfen der Nachteil, daß das Seitengestell, in welchem die Zylinderlager angeordnet sind, nicht gleichzeitig als Verkleidung der Maschine fungieren kann, sondern vielmehr zum Schutz der Bedienperson die bewegten Teile durch zusätzliche Verkleidungen abgedeckt werden müssen.In this device, both the bearing play of the adjusting device for the circumferential direction and the bearing play the adjusting device for the axial adjustment of the forme cylinder is practically eliminated by the compression springs, however, the use of two sliding bushes for the cylinder bearings and the arrangement of two disks at the ends of the bearing pins involve a relatively large amount of design effort. In addition, the disadvantage of the arrangement of the two disks at the ends of the cylinder journals is that the side frame in which the cylinder bearings are arranged cannot simultaneously function as a casing for the machine, but rather to protect the operator, the moving parts are covered by additional casings Need to become.

Ein weiterer Nachteil dieser Vorrichtung ist daher in der durch diese Konstruktion gedingten Baugröße zu sehen.Another disadvantage of this device is therefore to be seen in the size required by this construction.

Der Erfindung liegt daher die Aufgabe zugrunde, diese Nachteile zu vermeiden und ein an bestehende Offset-Druckmaschinen anbaubares Zusatzgerät oder Zusatzeinrichtung zu schaffen, welche die Justierung des Druckbildes bei geringem konstruktiven Aufwand und kleiner Baugröße auf einfache Weise und mit hoher Genauigkeit ermöglicht.The invention is therefore based on the object of avoiding these disadvantages and of creating an add-on device or additional device which can be attached to existing offset printing presses and which enables the print image to be adjusted in a simple manner and with high accuracy with little design complexity and small size.

Die Erfindung löst diese Aufgabe mit den Merkmalen des Patentanspruches 1.The invention solves this problem with the features of claim 1.

Bei einer bevorzugten Ausführungsform der Erfindung besteht das auf dem Gummituchzylinder der Offset-Druckmaschine befestigbare Zahnrad aus mindestens zwei Segmenten. Dies ermöglicht, das Zahnrad in der Offset-Druckmaschine zu befestigen, ohne den Gummituchzylinder auszubauen, d.h. ohne daß beim Anbau der Zusatzeinrichtung die Zerlegung der bestehenden Druckmaschine erforderlich wäre.In a preferred embodiment of the invention, the gear wheel which can be fastened on the blanket cylinder of the offset printing press consists of at least two segments. This allows the gear to be fixed in the offset press without removing the blanket cylinder, i.e. without having to disassemble the existing printing press when installing the additional device.

Zweckmäßigerweise weisen die Zahnradsegmente eine ringförmige Nut auf, in die ein aus Segmenten bestehender Verstärkungsring eingesetzt und befestigt ist, dessen Segmentenden gegenüber den Segmentenden des Zahnrads versetzt angeordnet sind.The gear segments expediently have an annular groove into which a reinforcing ring consisting of segments is inserted is inserted and attached, the segment ends of which are arranged offset from the segment ends of the gear.

Gemäß einer weiteren Ausführungsform der Erfindung sind an der Zusatzeinrichtung an ihrem Gehäuse befestigte Bügel vorgesehen, die Bohrungen aufweisen, welche mit bereits vorhandenen Gewindebohrungen auf der Oberseite des Rahmens der Offset-Druckmaschine fluchten. Derartige Gewindebohrungen sind vom Hersteller dort angebracht, um das Einschrauben vom Haken bzw. von einer Hebevorrichtung zu ermöglichen.According to a further embodiment of the invention, brackets which are fastened to the housing on the additional device are provided and have bores which are aligned with existing threaded bores on the upper side of the frame of the offset printing press. Such threaded holes are made by the manufacturer there to enable screwing in of the hook or a lifting device.

Weitere Ausführungsformen der Erfindung ergeben sich aus den Unteransprüchen.Further embodiments of the invention result from the subclaims.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher beschrieben.The invention is described below with reference to an embodiment shown in the drawing.

In der Zeichnung zeigen:

Fig. 1
eine perspektivische Ansicht der an eine Offset-Druckmaschine ange bauten erfindungsgemäßen Zusatzeinrichtung;
Fig. 2
eine Explosionszeichnung des an die Offset-Druckmaschine angebauten Zahnrads;
Fig. 3
eine perspektivische Ansicht des Formzylinders der Zusatzeinrichtung, teilweise im Schnitt mit Darstellung des Seitenregisters;
Fig. 4
eine perspektivische Darstellung des am linken Ende des Formzylinders angeordneten Längsregisters.
The drawing shows:
Fig. 1
a perspective view of the additional device according to the invention built on an offset printing press;
Fig. 2
an exploded view of the gear mounted on the offset printing press;
Fig. 3
a perspective view of the forme cylinder of the additional device, partly in section, showing the side register;
Fig. 4
a perspective view of the longitudinal register arranged at the left end of the forme cylinder.

Bei dem in Fig. 1 dargestellten Ausführungsbeispiel ist von einer bekannten Offset-Druckmaschine, die allgemein mit dem Bezugszeichen 1 versehen ist, nur so viel dargestellt, wie zum Verständnis der Zusatzeinrichtung erforderlich ist: Die Offset-Druckmaschine 1 weist in bekannter Weise ein durch Zahnräder angetriebenes Druckwerk auf, daß im wesentlichen aus einem Formzylinder 3, einem Gummituchzylinder 4 besteht sowie einem Farbwerk 5. Hierbei dient der Formzylinder 3 der Aufnahme und Fixierung der Druckfolie. Das Druckbild dieser Druckfolie wird nach Aufbringen der Druckfarbe bei der Rotation vom Formzylinder 3 auf den Gummituchzylinder 4 übertragen und anschließend während des gleichen Drucktaktes auf ein zwischen Gummituchzylinder 4 und einen (nichtdargestellten) Gegendruckzylinder hindurchgeführtes Druckmaterial abgedruckteIn the exemplary embodiment shown in FIG. 1, only as much is shown of a known offset printing press, which is generally provided with the reference number 1, as is necessary for understanding the additional device: The offset printing press 1 has in FIG known manner on a printing unit driven by gears that essentially consists of a forme cylinder 3, a blanket cylinder 4 and an inking unit 5. Here, the forme cylinder 3 serves to receive and fix the printing film. The print image of this printing film is transferred after application of the printing ink during rotation from the forme cylinder 3 to the blanket cylinder 4 and then printed during the same printing cycle on a printing material passed between the blanket cylinder 4 and a (not shown) impression cylinder

Die erfindungsgemäße Zusatzeinrichtung weist einen weiteren Formzylinder 6 auf, der im Gehäuse 7 der Zusatzeinrichtung gelagert ist. Er wird in bekannter Weise über verschiedene Walzen mit Farbe versehen. Im einzelnen überträgt hierbei der Farbduktor 8 die Farbe aus einem Farbkasten 9 über einen Farbheber 10 über Farbreiber 11 und Farbauftragswalzen 12 auf den Formzylinder 6. Gleichzeitig wird aus einem Wasserbecken 14 über einen Feuchtduktor 13, einen Feuchtheber 15, einen Feuchtreiber 16 und eine Feuchtauftragswalze 17 Feuchtigkeit auf den Formzylinder 6 übertragen. Ein wesentliches Merkmal der Erfindung ist nun darin zu sehen, daß der Formzylinder 6 durch ein fest mit ihm verbundes Antriebszahnrad 18 angetrieben wird, das eine Schrägverzahnung aufweist. Diese Schrägverzahnung greift in die Schrägverzahung eines Antriebszahnrads 19 ein, das auf die Stirnseite des Gummituchzylinders 4 der Offset-Druckmaschine 1 montiert ist.The additional device according to the invention has a further forme cylinder 6 which is mounted in the housing 7 of the additional device. It is provided with paint in a known manner on various rollers. Specifically, the ink fountain roller 8 transfers the ink from an ink fountain 9 via an ink lifter 10 via ink fountain pens 11 and ink application rollers 12 to the forme cylinder 6. At the same time, a water basin 14 via a dampening roller 13, a dampening lifter 15, a dampening roller 16 and a dampening application roller 17 Transfer moisture to the forme cylinder 6. An essential feature of the invention can now be seen in the fact that the forme cylinder 6 is driven by a drive gear 18 which is fixedly connected to it and which has helical teeth. This helical toothing engages in the helical toothing of a drive gear 19 which is mounted on the end face of the blanket cylinder 4 of the offset printing press 1.

Gemäß einer besonders vorteilhaften Ausbildung der Erfindung ist das Antriebszahnrad 19 aus mehreren, im dargestellten Ausführungsbeispiel aus zwei Kreissegmenten 19A, 19B aufgebaut, wie dies insbesondere der Fig. 2 zu entnehmen ist.According to a particularly advantageous embodiment of the invention, the drive gear 19 is constructed from several, in the exemplary embodiment shown, from two circular segments 19A, 19B, as can be seen in particular from FIG. 2.

Dies ermöglicht es, das Antriebszahnrad 19 ohne Zerlegung der Offset-Druckmaschine an diese anzubauen. Der ebenfalls in Segmente 20A und 20B unterteilte Verstärkungsring 20 befestigt die Segmente 19A, 19B des Antriebszahnrads 19 zusätzlich in ihrer Lage. Sie greifen in eine ringförmige Nut 19D des Zahnrads 19 ein und ihre Segmentenden 20C sind um 90° gegen die Segementenden 19C des Zahnrads 19 versetzt. Die Befestigung auf der Stirnseite des Gummituchzylinders 4 erfolgt durch SchraubenThis makes it possible to attach the drive gear 19 to the offset printing machine without disassembling it. The reinforcement ring 20, which is also divided into segments 20A and 20B, additionally fixes the segments 19A, 19B of the drive gear 19 in their position. They engage in an annular groove 19D of the gear wheel 19 and their segment ends 20C are offset by 90 ° against the segment ends 19C of the gear wheel 19. The attachment to the front of the blanket cylinder 4 is done by screws

Der Formzylinder 6 ist durch ein Seitenregister 21 längs seiner Achse verstellbar. Ein Längsregister 22 ermöglicht durch Verschiebung des Antriebszahnrads 18 relativ zum Formzylinder 6 dessen Verdrehung in Umfangsrichtung, relativ zum Gummituchzylinder der Offset-Druckmaschine. Einzelheiten der beiden Register werden an späterer Stelle beschrieben.The forme cylinder 6 is adjustable along its axis by a side register 21. A longitudinal register 22 enables displacement of the drive gear 18 relative to the forme cylinder 6 to rotate it in the circumferential direction, relative to the blanket cylinder of the offset printing press. Details of the two registers will be described later.

Die erfindungsgemäße Zusatzeinrichtung ist über Bügel 23, die an ihrem Gehäuse 7 befestigt sind, am Gehäuse 1 der Offset-Druckmaschine befestigbar. Diese Bügel 23 besitzen in ihrem oberen Teil ein Scharniergelenk 24, mit dem sie an den eigentlichen Befestigungsteil 25 angelenkt sind. In diesem Befestigungsteil 25 sind Bohrungen vorgesehen, die mit bereits im oberen Teil des Rahmens der Offset-Druckmaschine 1 vorgesehenen Gewindebohrungen fluchten. Diese Gewindebohrungen sind an sich dafür vorgesehen, daß Haken eingesetzt werden können, die der Anhebung und dem Transport der Maschinene dienen. Bei der Befestigung der Zusatzeinrichtung sind Schrauben 26 in diese Bohrungen eingeschraubt, mit denen Befestigungsteile 25 der Bügel 23 der Zusatzeinrichtung befestigbar sind.The additional device according to the invention can be fastened to the housing 1 of the offset printing machine via brackets 23 which are fastened to its housing 7. These brackets 23 have in their upper part a hinge joint 24 with which they are articulated to the actual fastening part 25. In this fastening part 25 are Bores are provided which are aligned with threaded bores already provided in the upper part of the frame of the offset printing press 1. These threaded holes are in themselves intended for the use of hooks which serve to lift and transport the machine. When fastening the additional device, screws 26 are screwed into these bores, with which fastening parts 25 of the bracket 23 of the additional device can be fastened.

Einzelheiten des Seitenregisters 21 und des Längsregisters 22 sollen im Folgenden anhand der Fig. 3 und 4 erläutert werden.Details of the side register 21 and the longitudinal register 22 will be explained below with reference to FIGS. 3 and 4.

Bei der in Fig. 3 dargestellten Ausführungsform ist der Drehknopf 21 des Seitenregisters über eine Achse 27, die im Gehäuse 7 gelagert ist, mit einem Zahnrad 28 verbunden, das mit einem Zahnrad 29 in Eingriff steht, welches ein Innengewinde aufweist. Dieses Innengewinde steht im Eingriff mit einem Gewinde 30 eines Zylinders 31, in dem eine Kernwelle 32 gelagert ist. Der Formzylinder 6 weist eine zylindrische Hülse 34 auf und ist mit einem Wälzlager 35 gelagert. Zwischen dem Zahnrad 29 und der Hülse 34 ist ein Axiallager 36 angeordnet. Am entgegengesetzten Ende des Formzylinders 6 ist die Kernwelle 32 in einer Hülse 37 gelagert.In the embodiment shown in FIG. 3, the rotary knob 21 of the side register is connected via an axis 27, which is mounted in the housing 7, to a toothed wheel 28, which is in engagement with a toothed wheel 29, which has an internal thread. This internal thread is in engagement with a thread 30 of a cylinder 31, in which a core shaft 32 is mounted. The forme cylinder 6 has a cylindrical sleeve 34 and is supported by a roller bearing 35. An axial bearing 36 is arranged between the gear wheel 29 and the sleeve 34. At the opposite end of the forme cylinder 6, the core shaft 32 is mounted in a sleeve 37.

Durch Verdrehen des Drehknopfs 21 des Seitenregisters und die damit hervorgerufene Drehung des Zahnrads 29 wird dieses auf dem Gewinde 30 in Richtung der Achse des Formzylinders 6 verschoben. Hierdurch drückt das axiale Lager 36 auf die Hülse 34 und verschiebt den Formzylinder 6 entsprechend. Die Verschiebung in Richtung auf den Drehknopf 21 zu wird durch die an späterer Stelle Beschriebenen Federn 45 bewirkt.By turning the rotary knob 21 of the side register and the rotation of the gear 29 caused thereby, the gear 29 is displaced on the thread 30 in the direction of the axis of the forme cylinder 6. This expresses that axial bearing 36 on the sleeve 34 and moves the forme cylinder 6 accordingly. The displacement in the direction of the rotary knob 21 is effected by the springs 45 described later.

Die Wirkungsweise des Längsregisters 22 ist der Fig. 4 zu entnehmen: Hier ist an einem Drehknopf 22 über eine Achse 38 ein Zahnrad 39 befestigt, das im Eingriff mit einer Zahnschreibe 40 steht, die mit einer Scheibe 41 verbunden ist, welche ein Innengewinde aufweist, das mit dem Gewinde 42 in Eingriff steht. Die Scheibe 41 drückt gegen ein Axiallager 47, das in einer ringförmigen Nut 18A des Antriebszahnrads für den Formzylinder 6 gelagert ist. Mit dem Formzylinder 6 ist das Zahnrad 18 durch Stehbolzen 43 verbunden, die in Ausnehmungen 44 im Zylinderkörper des Formzylinders 6 verschiebbar sind. Mehrere, vorzugsweise 6, derartiger Stehbolzen 43 sind gleichmäßig über den Umfang verteilt. Die gleiche Anzahl von Druckfedern 45 ist in Ausnehmungen des Zahnrads 18 gelagert und drückt den Körper des Formzylinders 6 in Richtung des Seitenregisters 21.The mode of operation of the longitudinal register 22 can be seen from FIG. 4: Here, a gearwheel 39 is fastened to a rotary knob 22 via an axis 38, which meshes with a toothed pin 40 which is connected to a washer 41 which has an internal thread, that is engaged with the thread 42. The disk 41 presses against an axial bearing 47, which is mounted in an annular groove 18A of the drive gear for the forme cylinder 6. The gear wheel 18 is connected to the forme cylinder 6 by means of stud bolts 43 which are displaceable in recesses 44 in the cylinder body of the forme cylinder 6. Several, preferably 6, such stud bolts 43 are evenly distributed over the circumference. The same number of compression springs 45 is mounted in recesses in the gear wheel 18 and presses the body of the forme cylinder 6 in the direction of the side register 21.

Durch Verdrehen des Stellknopfs 22 wird somit das Zahnrad 18 relativ zum Zylinderkörper, d. h. zum Formzylinder 6 bewegt, so daß dieser in Folge der Schrägverzahnung eine geringfügige Drehung in Umfangsrichtung erfährt.By turning the control knob 22, the gear 18 is thus relative to the cylinder body, i. H. moved to the forme cylinder 6 so that it undergoes a slight rotation in the circumferential direction as a result of the helical teeth.

Claims (4)

  1. Accessory for attachment to an offset printing machine comprising at least one forming cylinder, one rubber-blanket cylinder (offset cylinder) and one counter-pressure cylinder, in which respect the accessory is provided with an additional forming cylinder,
    which is engageable, via a toothed wheel, with a correspondingly equipped toothed wheel of the offset printing machine, which is attached to the rubber-blanket cylinder, and adjustable along its axis and in the peripheral direction, and that
    a lateral register is provided for axial adjustment of the forming cylinder, comprising a rotary axis by means of which an axial bearing is pushed via a toothed gearing towards the end of the body of the forming cylinder for the purpose of its axial displacement,
    characterised in that
    the toothed wheel (19) which is mounted on the rubber-blanket cylinder (19) and the toothed wheel (18) which is arranged on the forming cylinder (6) of the accessory (7) have slanted toothing, and
    that the accessory comprises a longitudinal register (22) for adjustment of the forming cylinder (6) in its peripheral direction, which is accommodated at the end of the forming cylinder (6) opposite the lateral register (21) and
    which comprises a rotary axis (38) which effects via a toothed gearing (39, 40) axial displacement of a disc (41) which presses onto an axial bearing (47) which is arranged in a groove (18A) at the end of the driven toothed wheel (18) of the forming cylinder (6) and displaces the driven toothed wheel (18) against the load of springs (45) in the axial direction relative to the forming cylinder (6), and that
    the torque of the driven toothed wheel (18) is transferred via axis-parallel bolts (43) from the driven toothed wheel (18) to the body of the forming cylinder (6).
  2. Device according to claim 1, characterised in that toothed wheel (19), which is attached to the rubber-blanket cylinder (4) of the offset printing machine (1), comprises at least two segments (19A, 19B).
  3. Device according to claim 2, characterised in that the toothed wheel segments (19A, 19B) have an annular groove (19D) into which is inserted and fixed a reinforcement ring (20) composed of segments (20A, 20B), the segment ends (20C) of which are arranged to be transposed relative to the segment ends (19C) of the toothed wheel (19).
  4. Accessory according to one of the above claims, characterised in that yokes (23, 25) are provided, which are attached to the housing (7) of the accessory, with bores which match already provided threaded bores at the top of the frame of the offset printing machine (1).
EP89113987A 1988-08-02 1989-07-28 Additional device for attachment to an offset-printing machine Expired - Lifetime EP0353652B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8809859U 1988-08-02
DE8809859U DE8809859U1 (en) 1988-08-02 1988-08-02 Additional device for attachment to an offset printing machine

Publications (3)

Publication Number Publication Date
EP0353652A2 EP0353652A2 (en) 1990-02-07
EP0353652A3 EP0353652A3 (en) 1991-07-03
EP0353652B1 true EP0353652B1 (en) 1994-09-21

Family

ID=6826567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89113987A Expired - Lifetime EP0353652B1 (en) 1988-08-02 1989-07-28 Additional device for attachment to an offset-printing machine

Country Status (4)

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EP (1) EP0353652B1 (en)
JP (1) JPH0280248A (en)
AT (1) ATE111806T1 (en)
DE (2) DE8809859U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8042466B2 (en) 2007-03-02 2011-10-25 Heidelberger Druckmaschinen Ag Printing press with adjustable bearer rings

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03286863A (en) * 1990-04-02 1991-12-17 Iwasaki Tekko Kk Multiple printing apparatus
JP3448766B2 (en) * 2000-06-07 2003-09-22 株式会社東京機械製作所 Register adjustment device for multi-color rotary printing press
CN100379556C (en) * 2006-02-24 2008-04-09 汕头市华盛塑料包装实业有限公司 Rapid coaxial plate-regulating device for conic container press

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598414A (en) * 1946-04-19 1952-05-27 Addressograph Multigraph Pivotal frame mounting structure for offset printing machine cylinders
FR1528114A (en) * 1966-07-29 1968-06-07 Addressograph Multigraph Two-color offset printing process
CH577383A5 (en) * 1973-08-27 1976-07-15 Schulz Juergen
US4043214A (en) * 1976-04-13 1977-08-23 Glen Edgar Westlake Sprocket, gear or pulley with interchangeable rim
DD128407B1 (en) * 1976-07-02 1986-02-26 Polygraph Leipzig REGISTERING DEVICE FOR FORM CYLINDERS OF ROTARY PRINTING MACHINES
DE7634679U1 (en) * 1976-10-30 1977-02-17 Heidelberger Druckmaschinen Ag, 6900 Heidelberg DEVICE ON ROTARY PRINTING MACHINES FOR ADJUSTING THE PAGE AND CIRCUMFERENCE REGISTER
JPS587653U (en) * 1981-07-09 1983-01-18 リョービ株式会社 Image position adjustment device for offset printing presses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8042466B2 (en) 2007-03-02 2011-10-25 Heidelberger Druckmaschinen Ag Printing press with adjustable bearer rings

Also Published As

Publication number Publication date
JPH0280248A (en) 1990-03-20
DE8809859U1 (en) 1988-09-15
DE58908393D1 (en) 1994-10-27
EP0353652A3 (en) 1991-07-03
EP0353652A2 (en) 1990-02-07
ATE111806T1 (en) 1994-10-15

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