EP0308799B1 - Device for attaching printing plates to cylinders - Google Patents

Device for attaching printing plates to cylinders Download PDF

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Publication number
EP0308799B1
EP0308799B1 EP88115052A EP88115052A EP0308799B1 EP 0308799 B1 EP0308799 B1 EP 0308799B1 EP 88115052 A EP88115052 A EP 88115052A EP 88115052 A EP88115052 A EP 88115052A EP 0308799 B1 EP0308799 B1 EP 0308799B1
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EP
European Patent Office
Prior art keywords
lever
plate
articulation lever
articulation
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.)
Expired - Lifetime
Application number
EP88115052A
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German (de)
French (fr)
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EP0308799A2 (en
EP0308799A3 (en
Inventor
Erich Georg Wieland
Willi Richard Ludwig Dörsam
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication date
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Publication of EP0308799A3 publication Critical patent/EP0308799A3/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F27/00Devices for attaching printing elements or formes to supports
    • B41F27/12Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1231Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by translatory motion substantially tangential to support surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F27/00Devices for attaching printing elements or formes to supports
    • B41F27/005Attaching and registering printing formes to supports
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41PINDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/40Adjusting means for printing plates on the cylinder
    • B41P2227/43Adjusting means for printing plates on the cylinder diagonally
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00Printing
    • Y10S101/36Means for registering or alignment of print plates on print press structure

Definitions

  • the invention relates to a device for setting a printing plate according to the preamble of patent claim 1.
  • the invention has for its object to provide a device for setting a plate mounted in plate clamping and clamping elements pressure plate, in which the current pivot point of the pressure plate freely selectable, but preferably is fixed in the vicinity of a register cross.
  • An axially parallel pit 2 is incorporated in a plate cylinder 1 in a known manner.
  • a double-armed but one-piece lever 4 is provided in the vicinity of a left end 3 of the pit 2.
  • the lever 4 is rotatably mounted about a pin 7.
  • the pin 7 is fitted into a holder 5 fastened to the base 6 of the pit.
  • the lever 4 has a bore 8 in its center into which the pin 7 engages.
  • the bore 8 is arranged exactly in the middle of the one-piece lever 4.
  • the lever 4 When compensating larger entanglements, the lever 4 must be designed in two parts due to the geometric conditions of a four-bar linkage, for example, the two lever arms 32 and 33 can be mounted coaxially (FIG. 3).
  • a bearing pin 35 engages in one end of the lever arm 32 and a bearing pin 39 in an end of the lever arm 33.
  • a second lever 11 is provided on a right end 9 of the pit 2. Like the lever 4, it is also rotatably mounted about a pin 16 fitted into a holder 10.
  • the bracket 10 is attached to the pit base 6.
  • the lever 11 has the shape of a cross, which has a bearing bore 14 at its foot end for receiving the pin 16.
  • the cross lever 11 has an opening 18 in its head end designed as a pointer tip 20 Inclusion of an eccentric 19.
  • the pointer tip 20 is directed to a scale 21 arranged transversely to the pit and together with it forms a display for the adjustment.
  • a rotation of the eccentric 19 causes the cross lever 11 to pivot about the pin 16 and thus entangles the device or pressure plates 42.
  • the cross lever 11 also has two lever arms 22, 23.
  • Both lever arms 22, 23 each have a vertical bearing journal 24, 26 at their end.
  • pit 2 two coupling pits 27, 28 of almost pit length are arranged on pit base 6 so as to be displaceable in all directions.
  • An upper guide against the sliding out of the coupling plates 27, 28 from the pit 2 is in each case by a lateral groove 15; 17 formed in the pit side walls and a projection 25 in the brackets 5, 10, in which the coupling plates 27, 28 engage with sufficient lateral play, so that a displacement in the axial and circumferential directions is ensured.
  • On the coupling plates 27, 29 a pressure plate clamping and tensioning device 12; 13 attached, which is not described in detail.
  • the coupling plate 27 is provided with two vertical bearing bores 29, 31.
  • a bearing pin 35 arranged at the end of a first arm 32 of the lever 4 engages in the bearing bore 29.
  • the bearing pin 24 of the lever arm 22 engages in the second bearing bore 31.
  • the coupling plate 28 is provided with vertical bearing bores 36, 37.
  • a bearing pin 39 fitted on one end of a second arm 33 of the lever 4 engages in the bearing bore 36.
  • the bearing pin engages in the second bearing bore 37 26 of the lever arm 23.
  • the levers 4 and 11 are designed so that the coupling plates 27, 28 run parallel to one another.
  • the extensions a, b, c, d of the connecting lines e, f, g, h intersect at a point A, where g is the connection between pin 16 and pin 24, e the connection between pin 16 and pin 26, h and f denote the levers 32 and 33 respectively.
  • the point A can be chosen as desired depending on the design of the lever arms 4, 11, but is preferably in the vicinity of a register cross 41.
  • the eccentric 19 is rotated.
  • the dimension for the rotation can be read off immediately by means of the display 20, 21.
  • the cross lever 11 is pivoted by the eccentric 19 around the pin 16 and acts via its lever arms 22, 23 directly on the coupling plates 27, 28, which are thereby displaced parallel to one another so that a rotation of the pressure plate 42 on the plate cylinder 1 around Point A results.
  • FIG Fig. 4 A second embodiment of the actuating device is shown in FIG Fig. 4 is shown schematically.
  • This control device can be adjusted while the machine is running.
  • a lever 44 is pivotally mounted about the pin 16.
  • the lever 44 is designed with two arms and has the lever arms 46, 47. Both lever arms 46, 47 lie in one plane and are open to one another at an acute opening angle ⁇ (for example 40 °). Both lever arms 46, 47 are welded together at one end and provided with a bearing bore 48.
  • the lever 44 is pushed onto the pin 16 by means of its bearing bore 48.
  • An additional lever 49 is welded to the tip of the two-armed lever 44 and ends in a slotted guide 51.
  • the guide 51 is not aligned parallel to the axis of rotation of the plate cylinder 1, but at an angle ⁇ (for example 15 °).
  • a guide pin 52 of a push rod 53 engages in the guide 51.
  • the push rod 53 is arranged in guides 54, which are fastened to the pit base 6, and can be moved back and forth parallel to the axis of rotation of the plate cylinder 1.
  • the device is entangled by means of a hydraulic or pneumatic adjustment, in that the push rod 53 is displaced via a hydraulically or pneumatically operated working cylinder 56 which is fastened to the pit base 6 and into which an end of the push rod 53 designed as a piston 57 opens.
  • the working cylinder 56 can be pressurized via the cylinder axis by means of pipes, not shown.
  • the adjustment mechanism consisting of guide pin 52 and slotted guide 51 is replaced by a screw adjustment consisting of set screw 58 and fork 67.
  • the set screw 58 is screwed through a bearing block 59.
  • the bearing block 59 is fastened to the base 6 in the middle of the pit 2.
  • a threaded bore 61 in the bearing block 59, into which the set screw 58 is screwed, extends transversely to the pit 2 and points in the circumferential direction of the plate.
  • the adjusting screw 58 protrudes with its head 62 and its tip 63 beyond the bearing block 59, so that an adjustment in both directions is possible.
  • the head 62 and the tip 63 are surrounded by side walls 64, 66 of the fork 67, which is welded to the lever 49.
  • the screw tip 63 presses against the first side surface 64 of the fork 67 and pivots the two-armed lever 44 counterclockwise.
  • the screw head 62 presses against the side surface 66 of the fork 67 and pivots the lever 44 in a clockwise direction.
  • the surface of the plate cylinder 1 is equipped, for example, with a coating with a low coefficient of friction.
  • the surface of the plate cylinder 1 can also be provided with small bores which are connected to a compressed air source. If the pressure plate 42 is now to be moved on the cylinder 1, compressed air is blown under the pressure plate 42 by means of the compressed air source after the pressure plate 42 has been relaxed, so that it can be easily moved on the circumference of the plate cylinder 1.

Description

Die Erfindung betrifft eine Vorrichtung zum Schränken einer Druckplatte gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a device for setting a printing plate according to the preamble of patent claim 1.

Aus der EP-0 232 730 A2 ist eine Vorrichtung zum Aufspannen von biegsamen Druckplatten auf einem Plattenzylinder von Rotationsdruckmaschinen bekannt geworden. Diese Vorrichtung enthält eine Einrichtung zum Verschränken der Druckplatte auf dem Plattenzylinder zur Korrektur des Passers. Bei dieser Patentanmeldung ist weiter beschrieben, daß die beiden Plattenenden in Klemm- und Spanneinrichtung eingespannt sind. Zwei Spannschienen sind an ihren Enden über je einen Anlenkhebel gelenkig verbunden und am Zylinderkörper schwenkbar gelagert. Die Klemm- und Spanneinrichtungen sind über Steuermittel mittelbar und relativ zueinander so verstellbar, daß die Druckplatte um einen genau bestimmten Punkt verschränkt wird.From EP-0 232 730 A2 an apparatus for clamping flexible printing plates on a plate cylinder of rotary printing machines has become known. This device contains a device for interlacing the printing plate on the plate cylinder to correct the register. In this patent application it is further described that the two plate ends are clamped in the clamping and tensioning device. Two tensioning rails are articulated at their ends each via a link lever and pivotally mounted on the cylinder body. The clamping and tensioning devices can be adjusted indirectly and relative to one another via control means in such a way that the pressure plate is entangled by a precisely determined point.

Durch die DE-PS 8 93 343 ist eine Plattenschränkvorrichtung bekannt geworden, mit der es möglich ist eine Druckplatte auf dem Plattenzylinder zu verschränken. Bei dieser Plattenschränkvorrichtung ist es jedoch nur möglich die Platte um einen Punkt in ca. halber Zylinderbreite zu verschwenken. Durch ein seitliches Verschieben der Vorder- und Hinterkante der Druckplatte wird eine Schrägstellung erreicht. Wie gesagt, ist jedoch die Schrägstellung nur um einen Punkt möglich, der sich ungefähr in der Mitte der Zylinderbreite befindet. Andere Schwenkpunkte sind ausgeschlossen.From DE-PS 8 93 343 a plate cabinet device has become known with which it is possible to interlock a printing plate on the plate cylinder. With this plate cabinet device, however, it is only possible to pivot the plate about a point in approximately half the cylinder width. By shifting the front and rear edge of the pressure plate sideways, an inclined position is achieved. As said, however, the inclination is only possible around a point which is approximately in the middle of the cylinder width. Other pivot points are excluded.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Schränken einer in Plattenklemm- und Plattenspannelementen befestigten Druckplatte zu schaffen, bei der der momentane Schwenkpunkt der Druckplatte frei wählbar, vorzugsweise jedoch in der Nähe eines Paßkreuzes festliegt.The invention has for its object to provide a device for setting a plate mounted in plate clamping and clamping elements pressure plate, in which the current pivot point of the pressure plate freely selectable, but preferably is fixed in the vicinity of a register cross.

Die Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Patentanspruches 1 gelöst.The object is achieved by the characterizing part of claim 1.

Die mit der Erfindung erzielbaren Vorteile liegen insbesondere darin, daß ein zuvor eingestelltes Umfangs- und Seitenregister durch das in der Nähe eines Schwenkpoles liegende Paßkreuz festliegt, so daß beim Ausgleich eines Schränkungsfehlers, Umfangs- und Seitenregister nicht mehr verstellt werden. Außerdem ist es möglich, dieses während des Maschinenlaufes durchzuführen. Dieses erlaubt die Rüstzeiten zu verkürzen.The advantages that can be achieved with the invention are, in particular, that a previously set circumferential and side register is fixed by the fitting cross located near a swivel pole, so that when compensating for a misalignment error, the circumferential and side registers no longer exist be adjusted. It is also possible to do this while the machine is running. This allows the set-up times to be shortened.

Man braucht nicht mehr bei Verschränkungsfehlern den gesamten Plattenzylinder schräg zu stellen und dadurch eine parallelogrammartige Verformung der Abdruckfläche hinzunehmen. Es werden Nachteile für Lager, Zahnräder und Walzeneinstellung vermieden, außerdem wird der, bei einer Schrägstellung des Plattenzylinders, unvermeidliche Axialschub vermieden.It is no longer necessary to skew the entire plate cylinder in the event of misalignment and thus accept a parallelogram-like deformation of the impression surface. Disadvantages for bearings, gears and roller adjustment are avoided, and the inevitable axial thrust is avoided when the plate cylinder is tilted.

Drei Auführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben.Three exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

Es zeigen

Fig. 1
eine Draufsicht auf die erfindungsgemäße Einstellvorrichtung für eine Plattenklemm- und spannvorrichtung,
Fig. 2
einen Schnitt entlang der Linie II-II, jedoch mit schematisch dargestellter Plattenklemm- und spannvorrichtung,
Fig. 3
eine schematische Darstellung der Hebel in Verbindung mit einer abgewickelten Druckplatte
Fig. 4
eine zweite Ausführungsform in schematischer Darstellung,
Fig. 5
eine dritte Ausführungsform in schematischer Darstellung.
Show it
Fig. 1
a plan view of the adjusting device according to the invention for a plate clamping and tensioning device,
Fig. 2
2 shows a section along the line II-II, but with a schematically illustrated plate clamping and tensioning device,
Fig. 3
is a schematic representation of the lever in connection with a developed pressure plate
Fig. 4
a second embodiment in a schematic representation,
Fig. 5
a third embodiment in a schematic representation.

In einen Plattenzylinder 1 ist in bekannter Weise eine achsparallele Grube 2 eingearbeitet. In der Nähe eines linken Endes 3 der Grube 2 ist ein doppelarmiger jedoch einteilig ausgeführter Hebel 4 vorgesehen. Der Hebel 4 ist um einen Zapfen 7 drehbar gelagert. Der Zapfen 7 ist in eine am Grubengrund 6 befestigten Halterung 5 eingepaßt. Der Hebel 4 weist in seiner Mitte eine Bohrung 8 auf, in die der Zapfen 7 eingreift. Die Bohrung 8 ist in den gezeigten Ausführungbeispielen exakt in der Mitte des einteiligen Hebels 4 angeordnet. Eine einteilige Ausführung des Hebels 4 ist möglich wenn kleinwinkelige Verschränkungen, wie es in der Praxis der Fall ist, ausgeglichen werden sollen (Schwenkwinkel α = ± 0,8°, entspricht ca. ± 2mm Plattenschränkung). Beim Ausgleich größerer Verschränkungen müssen aufgrund der geometrischen Bedingungen eines Gelenkviereckes der Hebel 4 zweigeteilt ausgeführt werden, wobei beispielsweise eine koaxiale Lagerung der beiden Hebelarme 32 und 33 erfolgen kann (Fig.3). Ein Lagerzapfen 35 greift in ein Ende des Hebelarmes 32 und ein Lagerzapfen 39 in ein Ende des Hebelarmes 33 ein.An axially parallel pit 2 is incorporated in a plate cylinder 1 in a known manner. In the vicinity of a left end 3 of the pit 2, a double-armed but one-piece lever 4 is provided. The lever 4 is rotatably mounted about a pin 7. The pin 7 is fitted into a holder 5 fastened to the base 6 of the pit. The lever 4 has a bore 8 in its center into which the pin 7 engages. In the exemplary embodiments shown, the bore 8 is arranged exactly in the middle of the one-piece lever 4. A one-piece design of the lever 4 is possible if small-angle entanglements, as is the case in practice, are to be compensated for (swivel angle α = ± 0.8 °, corresponds to approximately ± 2 mm plate restriction). When compensating larger entanglements, the lever 4 must be designed in two parts due to the geometric conditions of a four-bar linkage, for example, the two lever arms 32 and 33 can be mounted coaxially (FIG. 3). A bearing pin 35 engages in one end of the lever arm 32 and a bearing pin 39 in an end of the lever arm 33.

Auf einem rechten Ende 9 der Grube 2 ist ein zweiter Hebel 11 vorgesehen. Er ist ebenfalls wie der Hebel 4 um einen in eine Halterung 10 eingepaßten Zapfen 16 drehbar gelagert. Die Halterung 10 ist am Grubengrund 6 befestigt. Der Hebel 11 hat die Form eines Kreuzes, das an seinem Fußende eine Lagerbohrung 14 zur Aufnahme des Zapfens 16 aufweist. In seinem als Zeigerspitze 20 ausgebildeten Kopfende weist der Kreuzhebel 11 einen Durchbruch 18 zur Aufnahme eines Exzenters 19 auf. Die Zeigerspitze 20 ist auf eine quer zur Grube angeordnete Skala 21 gerichtet und bildet mit ihr zusammen eine Anzeige für die Verstellung. Eine Verdrehung des Exzenters 19 hat eine Verschwenkung des Kreuzhebels 11 um den Zapfen 16 und damit eine Verschränkung der Vorrichtung, bzw. Druckplatten 42 zur Folge. Der Kreuzhebel 11 weist außerdem zwei Hebelarme 22, 23 auf. Beide Hebelarme 22, 23 weisen an ihrem Ende jeweils einen vertikalen Lagerzapfen 24, 26 auf. In der Grube 2 sind zwei nahezu grubenlange Koppelplatten 27, 28 auf dem Grubengrund 6 in alle Richtungen verschiebbar angeordnet. Eine obere Führung gegen das Herausgleiten der Koppelplatten 27, 28 aus der Grube 2 wird durch jeweils eine seitliche Nut 15; 17 in den Grubenseitenwänden und einen Vorsprung 25 in den Halterungen 5, 10 gebildet, in welche die Koppelplatten 27, 28 mit ausreichendem seitlichen Spiel eingreifen, so daß eine Verschiebung in axialer und in Umfangsrichtung gewährleistet ist. Auf den Koppelplatten 27, 29 ist jeweils eine Druckplattenklemm- und Spannvorrichtung 12; 13 befestigt, die jedoch nicht näher beschrieben wird.A second lever 11 is provided on a right end 9 of the pit 2. Like the lever 4, it is also rotatably mounted about a pin 16 fitted into a holder 10. The bracket 10 is attached to the pit base 6. The lever 11 has the shape of a cross, which has a bearing bore 14 at its foot end for receiving the pin 16. The cross lever 11 has an opening 18 in its head end designed as a pointer tip 20 Inclusion of an eccentric 19. The pointer tip 20 is directed to a scale 21 arranged transversely to the pit and together with it forms a display for the adjustment. A rotation of the eccentric 19 causes the cross lever 11 to pivot about the pin 16 and thus entangles the device or pressure plates 42. The cross lever 11 also has two lever arms 22, 23. Both lever arms 22, 23 each have a vertical bearing journal 24, 26 at their end. In pit 2, two coupling pits 27, 28 of almost pit length are arranged on pit base 6 so as to be displaceable in all directions. An upper guide against the sliding out of the coupling plates 27, 28 from the pit 2 is in each case by a lateral groove 15; 17 formed in the pit side walls and a projection 25 in the brackets 5, 10, in which the coupling plates 27, 28 engage with sufficient lateral play, so that a displacement in the axial and circumferential directions is ensured. On the coupling plates 27, 29 a pressure plate clamping and tensioning device 12; 13 attached, which is not described in detail.

Die Koppelplatte 27 ist mit zwei vertikalen Lagerbohrungen 29, 31 versehen. In die Lagerbohrung 29 greift ein am Ende eines ersten Armes 32 des Hebels 4 angeordneter Lagerzapfen 35 ein. In die zweite Lagerbohrung 31 greift der Lagerzapfen 24 des Hebelarmes 22 ein. Die Koppelplatte 28 ist mit vertikalen Lagerbohrungen 36, 37 versehen. In die Lagerbohrung 36 greift ein auf einem Ende eines zweiten Armes 33 des Hebels 4 angebrachter Lagerzapfen 39 ein. In die zweite Lagerbohrung 37 greift der Lagerzapfen 26 des Hebelarmes 23 ein. Die Hebel 4 und 11 sind so gestaltet, daß die Koppelplatten 27, 28 parallel zueinander verlaufen. Außerdem schneiden sich die Verlängerungen a, b, c, d der Verbindungslinien e, f, g, h in einem Punkt A, wobei g die Verbindung zwischen Zapfen 16 und Zapfen 24, e die Verbindung zwischen Zapfen 16 und Zapfen 26, h und f die Hebel 32 bzw. 33 bezeichnen. Der Punkt A kann je nach Ausbildung der Hebelarme 4, 11 beliebig gewählt werden, liegt jedoch vorzugsweise in der Nähe eines Paßkreuzes 41.The coupling plate 27 is provided with two vertical bearing bores 29, 31. A bearing pin 35 arranged at the end of a first arm 32 of the lever 4 engages in the bearing bore 29. The bearing pin 24 of the lever arm 22 engages in the second bearing bore 31. The coupling plate 28 is provided with vertical bearing bores 36, 37. A bearing pin 39 fitted on one end of a second arm 33 of the lever 4 engages in the bearing bore 36. The bearing pin engages in the second bearing bore 37 26 of the lever arm 23. The levers 4 and 11 are designed so that the coupling plates 27, 28 run parallel to one another. In addition, the extensions a, b, c, d of the connecting lines e, f, g, h intersect at a point A, where g is the connection between pin 16 and pin 24, e the connection between pin 16 and pin 26, h and f denote the levers 32 and 33 respectively. The point A can be chosen as desired depending on the design of the lever arms 4, 11, but is preferably in the vicinity of a register cross 41.

Um ein faltenfreies Verschränken einer eingeklemmten Druckplatte 42 auf dem Plattenzylinder 1 zu gewährleisten, muß ein bestimmtes Verhältnis X zwischen den Verbindungslinien e, f, g, h und deren Verlängerungen a, b, c, d eingehalten werden. Das Verhältnis X beträgt hierbei:

Figure imgb0001
In order to ensure a wrinkle-free entanglement of a clamped pressure plate 42 on the plate cylinder 1, a certain ratio X between the connecting lines e, f, g, h and their extensions a, b, c, d must be observed. The ratio X is:
Figure imgb0001

Um die Druckplatte 42 auf dem Plattenzylinder 1 zu verschränken, wird der Exzenter 19 verdreht. Das Maß für die Verdrehung kann mittels der Anzeige 20, 21 sofort abgelesen werden. Der Kreuzhebel 11 wird durch den Exzenter 19 um den Zapfen 16 geschwenkt und wirkt über seine Hebelarme 22, 23 direkt auf die Koppelplatten 27, 28, die dadurch parallel zueinander so verschoben werden, daß sich eine Drehung der Druckplatte 42 auf dem Plattenzylinder 1 um den Punkt A ergibt.In order to interlock the pressure plate 42 on the plate cylinder 1, the eccentric 19 is rotated. The dimension for the rotation can be read off immediately by means of the display 20, 21. The cross lever 11 is pivoted by the eccentric 19 around the pin 16 and acts via its lever arms 22, 23 directly on the coupling plates 27, 28, which are thereby displaced parallel to one another so that a rotation of the pressure plate 42 on the plate cylinder 1 around Point A results.

Eine zweite Ausführungsform der Stelleinrichtung ist in der Fig. 4 schematisch dargestellt. Diese Stelleinrichtung kann während des Maschinenlaufes verstellt werden. In der Grube 2 ist um den Zapfen 16 ein Hebel 44 schwenkbar gelagert. Der Hebel 44 ist zweiarmig ausgeführt und weist die Hebelarme 46, 47 auf. Beide Hebelarme 46, 47 liegen in einer Ebene und sind zueinander in einem spitzen Öffnungswinkel β (z.B. 40°) geöffnet. Beide Hebelarme 46, 47 sind an ihrem einen Ende miteinander verschweißt und mit einer Lagerbohrung 48 versehen. Der Hebel 44 wird mittels seiner Lagerbohrung 48 auf den Zapfen 16 aufgesteckt. An die Spitze des zweiarmigen Hebels 44 ist ein zusätzlicher Hebel 49 angeschweißt, der in einer geschlitzten Führung 51 endet. Die Führung 51 ist nicht parallel zur Rotationsachse des Plattenzylinders 1 ausgerichtet, sondern in einem Winkel γ (z.B. 15°). In die Führung 51 greift ein Führungszapfen 52 einer Schubstange 53 ein. Die Schubstange 53 ist in Führungen 54, die am Grubengrund 6 befestigt sind, parallel zur Rotationsachse des Plattenzylinders 1 hin und her verschiebbar angeordnet.A second embodiment of the actuating device is shown in FIG Fig. 4 is shown schematically. This control device can be adjusted while the machine is running. In the pit 2, a lever 44 is pivotally mounted about the pin 16. The lever 44 is designed with two arms and has the lever arms 46, 47. Both lever arms 46, 47 lie in one plane and are open to one another at an acute opening angle β (for example 40 °). Both lever arms 46, 47 are welded together at one end and provided with a bearing bore 48. The lever 44 is pushed onto the pin 16 by means of its bearing bore 48. An additional lever 49 is welded to the tip of the two-armed lever 44 and ends in a slotted guide 51. The guide 51 is not aligned parallel to the axis of rotation of the plate cylinder 1, but at an angle γ (for example 15 °). A guide pin 52 of a push rod 53 engages in the guide 51. The push rod 53 is arranged in guides 54, which are fastened to the pit base 6, and can be moved back and forth parallel to the axis of rotation of the plate cylinder 1.

Die Verschränkung der Vorrichtung erfolgt mittels einer Hydraulik- bzw. Pneumatikverstellung, indem die Schubstange 53, über einen hydraulisch oder pneumatisch betätigten Arbeitszylinder 56, der am Grubengrund 6 befestigt ist und in den ein als Kolben 57 ausgebildetes Ende der Schubstange 53 mündet, verschoben wird. Der Arbeitszylinder 56 ist mittels nicht dargestellter Rohrleitungen über die Zylinderachse druckmittelbeaufschlagbar. Bei einer Verschiebung der Schubstange 53 nach rechts, erfährt der doppelarmige Hebel 44 eine Verdrehung entgegen dem Uhrzeigersinn. Bei einer dritten Ausführungsform (Fig. 5) ist der aus Führungszapfen 52 und geschlitzter Führung 51 bestehende Verstellmechanismus durch eine aus Stellschraube 58 und Gabel 67 bestehende Schraubverstellung ersetzt. Die Stellschraube 58 ist durch einen Lagerbock 59 geschraubt. Der Lagerbock 59 ist am Grund 6 in der Mitte der Grube 2 befestigt. Eine Gewindebohrung 61 im Lagerbock 59, in die die Stellschraube 58 eingeschraubt ist, verläuft quer zur Grube 2 und weist in Plattenumfangsrichtung. Die Stellschraube 58 ragt mit ihrem Kopf 62 und ihrer Spitze 63 über den Lagerbock 59 hinaus, so daß eine Verstellung in beide Richtungen möglich ist. Der Kopf 62 und die Spitze 63 werden von Seitenwänden 64, 66 der Gabel 67 umfaßt, die an den Hebel 49 angeschweißt ist. Bei Drehung der Stellschraube 58 im Uhrzeigersinn drückt die Schraubenspitze 63 gegen die erste Seitenfläche 64 der Gabel 67 und verschwenkt den zweiarmigen Hebel 44 gegen den Uhrzeigersinn. Bei Drehung der Stellschraube 58 gegen den Uhrzeigersinn drückt der Schraubenkopf 62 gegen die Seitenfläche 66 der Gabel 67 und verschwenkt den Hebel 44 im Uhrzeigersinn.The device is entangled by means of a hydraulic or pneumatic adjustment, in that the push rod 53 is displaced via a hydraulically or pneumatically operated working cylinder 56 which is fastened to the pit base 6 and into which an end of the push rod 53 designed as a piston 57 opens. The working cylinder 56 can be pressurized via the cylinder axis by means of pipes, not shown. When the push rod 53 is shifted to the right, the double-armed lever 44 is rotated counterclockwise. In a third embodiment (Fig. 5) the adjustment mechanism consisting of guide pin 52 and slotted guide 51 is replaced by a screw adjustment consisting of set screw 58 and fork 67. The set screw 58 is screwed through a bearing block 59. The bearing block 59 is fastened to the base 6 in the middle of the pit 2. A threaded bore 61 in the bearing block 59, into which the set screw 58 is screwed, extends transversely to the pit 2 and points in the circumferential direction of the plate. The adjusting screw 58 protrudes with its head 62 and its tip 63 beyond the bearing block 59, so that an adjustment in both directions is possible. The head 62 and the tip 63 are surrounded by side walls 64, 66 of the fork 67, which is welded to the lever 49. When the adjusting screw 58 is rotated clockwise, the screw tip 63 presses against the first side surface 64 of the fork 67 and pivots the two-armed lever 44 counterclockwise. When the adjusting screw 58 is turned counterclockwise, the screw head 62 presses against the side surface 66 of the fork 67 and pivots the lever 44 in a clockwise direction.

Um eine leichtere Verschiebung der Druckplatte 42 auf dem Plattenzylinder 1 zu ermöglichen, ist die Oberfläche des Plattenzylinder 1 z.B. mit einer Beschichtung mit einem niedrigen Reibwert ausgerüstet. Auch kann die Oberfläche des Plattenzylinders 1 mit kleinen Bohrungen versehen sein, die an eine Druckluftquelle angeschlossen sind. Soll nun die Druckplatte 42 auf dem Zylinder 1 verschoben werden, so wird nach Entspannung der Druckplatte 42 mittels der Druckluftquelle Druckluft unter die Druckplatte 42 geblasen, so daß sie sich leicht auf dem Umfang des Plattenzylinders 1 verschieben läßt.In order to enable an easier displacement of the printing plate 42 on the plate cylinder 1, the surface of the plate cylinder 1 is equipped, for example, with a coating with a low coefficient of friction. The surface of the plate cylinder 1 can also be provided with small bores which are connected to a compressed air source. If the pressure plate 42 is now to be moved on the cylinder 1, compressed air is blown under the pressure plate 42 by means of the compressed air source after the pressure plate 42 has been relaxed, so that it can be easily moved on the circumference of the plate cylinder 1.

TeilelisteParts list

11
PlattenzylinderPlate cylinder
22nd
Grubepit
33rd
Ende (2)End (2)
44th
Hebellever
55
Halterungbracket
66
GrubengrundPit base
77
ZapfenCones
88th
Bohrung (4)Bore (4)
99
Ende (2)End (2)
1010th
Halterungbracket
1111
Hebellever
1212
Klemm- und SpannvorrichtungClamping and tensioning device
1313
Klemm- und SpannvorrichtungClamping and tensioning device
1414
LagerbohrungBearing bore
1515
Nut (2)Groove (2)
1616
ZapfenCones
1717th
Nut (2)Groove (2)
1818th
Durchbruchbreakthrough
1919th
Exzentereccentric
2020th
ZeigerspitzePointer tip
2121
Skalascale
2222
Hebelarm (11)Lever arm (11)
2323
Hebelarm (11)Lever arm (11)
2424th
Lagerzapfen (22)Bearing journal (22)
2525th
Vorsprunghead Start
2626
Lagerzapfen (23)Journal (23)
2727th
KoppelplatteCoupling plate
2828
Koppelplatte(4)Coupling plate (4)
2929
Lagerbohrung (27)Bearing hole (27)
3030th
--
3131
Lagerbohrung (27)Bearing bore (27)
3232
Arm (4)Arm (4)
3333
Arm (4)Arm (4)
3434
--
3535
Lagerzapfen (32)Bearing journal (32)
3636
Lagerbohrung (28)Bearing hole (28)
3737
Lagerbohrung (28)Bearing hole (28)
3838
--
3939
Lagerzapfen (33)Bearing journal (33)
4040
--
4141
PaßkreuzRegister cross
4242
Druckplatteprinting plate
4343
--
4444
Hebellever
4545
--
4646
Hebelarm (4)Lever arm (4)
4747
Hebelarm (4)Lever arm (4)
4848
Lagerbohrung (44)Bearing hole (44)
4949
Hebellever
5050
--
5151
Führungguide
5252
FührungszapfenGuide pin
5353
SchubstangePush rod
5454
Führungguide
5555
--
5656
ArbeitszylinderWorking cylinder
5757
Kolbenpiston
5858
StellschraubeSet screw
5959
LagerbockBearing block
6060
--
6161
Gewindebohrung (59)Tapped hole (59)
6262
Kopf (58)Head (58)
6363
Spitze (58)Lace (58)
6464
SeitenwandSide wall
6565
--
6666
SeitenwandSide wall
6767
Gabelfork
aa
Verlängerung (e)Extension (s)
bb
Verlängerung (f)Extension
cc
Verlängerung (g)Extension (g)
dd
Verlängerung (h)Extension (h)
ee
Verbindungslinie (16-26)Connecting line (16-26)
ff
Verbindungslinie (7-39)Connecting line (7-39)
gG
Verbindungslinie (16-24)Connecting line (16-24)
hH
Verbindungslinie (7-35)Connecting line (7-35)
αα
VerstellwinkelAdjustment angle
ββ
ÖffnungswinkelOpening angle
γγ
NeigungswinkelAngle of inclination
XX
Verhältnisrelationship
AA
Drehpunkt (42)Pivot (42)

Claims (4)

  1. Apparatus for skewing a printing plate on a plate cylinder of a rotary printing machine for adjusting the register, the two plate ends being clamped in clamping and tensioning devices, the clamping and tensioning devices (12, 13) being connected to a respective coupling plate (27, 28), the coupling plates (27, 28) being articulatedly connected to articulation levers (4, 32, 33, 46, 47, 44), and the articulation levers (32, 33, 46, 47) being pivotally mounted on the cylinder body (2) and the coupling plates (27, 28) connected thus being adjustable relative to one another, characterized in that first articulation lever arms (32, 33) are provided, in that two articulation lever arms (32, 33) form a double-arm articulation lever (4), in that a two-arm articulation lever (44) is provided, in that the two-arm articulation lever (44) comprises two lever arms (46, 47) which are arranged at an acute angle of opening (β) with respect to one another, in that the extensions of the first and second articulation lever arms (32, 33, 46, 47) have a common point of intersection forming the pivot point (A) of the printing plate.
  2. Apparatus according to Claim 1, characterized in that the first articulation lever arms (32, 33) are mounted coaxially with respect to one another by means of their ends (8, 7).
  3. Apparatus according to Claim 1, characterized in that the double-arm articulation lever (4) is pivotally arranged about a peg (7) secured to the cylinder.
  4. Apparatus according to Claims 1 to 3, characterized in that a third lever (49) is welded to a tip of the second articulation lever (44).
EP88115052A 1987-09-19 1988-09-15 Device for attaching printing plates to cylinders Expired - Lifetime EP0308799B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3731642 1987-09-19
DE19873731642 DE3731642A1 (en) 1987-09-19 1987-09-19 PANEL CABINET DEVICE

Publications (3)

Publication Number Publication Date
EP0308799A2 EP0308799A2 (en) 1989-03-29
EP0308799A3 EP0308799A3 (en) 1989-05-24
EP0308799B1 true EP0308799B1 (en) 1992-12-02

Family

ID=6336448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115052A Expired - Lifetime EP0308799B1 (en) 1987-09-19 1988-09-15 Device for attaching printing plates to cylinders

Country Status (6)

Country Link
US (1) US4862800A (en)
EP (1) EP0308799B1 (en)
JP (1) JPH0615236B2 (en)
CS (1) CS274436B2 (en)
DD (1) DD282421A5 (en)
DE (2) DE3731642A1 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
DE4315311A1 (en) * 1993-04-30 1994-11-10 Roland Man Druckmasch Plate cylinder for a printing machine
DE102019101172A1 (en) 2019-01-17 2020-07-23 Koenig & Bauer Ag Forme cylinder with holding device and a flexo applicator
EP3771563A1 (en) 2019-08-02 2021-02-03 Koenig & Bauer AG Form cylinder and method for adjusting a clamping force in a holding device
DE102020106729A1 (en) 2020-03-12 2021-09-16 Koenig & Bauer Ag Printing machine with a device for detecting the presence of an application form and a method for supplying an application form

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DE3918215C1 (en) * 1989-06-03 1990-11-08 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
JP2926656B2 (en) * 1989-09-13 1999-07-28 アキヤマ印刷機製造 株式会社 Plate twist adjustment mechanism for sheet-fed printing press
DE3934334C1 (en) * 1989-10-14 1991-04-11 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE3936446A1 (en) * 1989-11-02 1991-05-08 Miller Johannisberg Druckmasch PLATE CYLINDER OF A PRINTING MACHINE
DE3936458C1 (en) * 1989-11-02 1991-04-11 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4100408C1 (en) * 1991-01-09 1992-05-14 Man Miller Druckmaschinen Gmbh, 6222 Geisenheim, De
DE4106677C1 (en) * 1991-03-02 1992-04-23 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
US5189958A (en) * 1991-04-05 1993-03-02 A. B. Dick Company Plate clamping system for a duplicating machine
DE4111636C1 (en) * 1991-04-10 1992-07-30 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
US5188031A (en) * 1991-06-27 1993-02-23 Rockwell International Corporation Printing press blanket cylinder assembly, subassemblies and method of using same
DE4132805C2 (en) * 1991-10-02 1995-05-04 Koenig & Bauer Ag Side register adjustment device for printing plates
US5317968A (en) * 1991-11-22 1994-06-07 Shinohara Machiner Co., Ltd. Plate cocking apparatus for sheet-fed printing press
GB2261848B (en) * 1991-11-26 1995-02-08 Shinohara Machinery Co Ltd Plate cocking apparatus for sheet-fed printing press
DE4210897C1 (en) * 1992-04-02 1993-08-12 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4214167A1 (en) * 1992-04-30 1993-11-04 Roland Man Druckmasch DEVICE FOR RESTRICTING PRINTING PLATES ON THE PLATE CYLINDER OF PRINTING MACHINES, IN PARTICULAR BOW OFFSET PRINTING MACHINES
DE4304328C2 (en) * 1993-02-13 2003-01-30 Heidelberger Druckmasch Ag Device for clamping a flexible printing plate on a plate cylinder of a rotary printing machine
US5345868A (en) * 1993-06-04 1994-09-13 Baker A Leroy Printing plate mounting support and method
US5419248A (en) * 1994-03-09 1995-05-30 Heidelberg Druckmaschinen Ag Adjustable alignment device for printing plates
DE69529350T2 (en) * 1994-04-13 2003-10-16 Winkler & Duennebier Ag Cylinder for attaching a flexible stamping tool
US5727749A (en) * 1996-02-05 1998-03-17 Presstek, Inc Automatic plate-loading cylinder with constant circumferential tension
US5870955A (en) * 1997-03-05 1999-02-16 Presstek, Inc. Lithographic printing system with reusable support surfaces and lithographic constructions for use therewith
JP3691314B2 (en) * 1999-11-02 2005-09-07 理想科学工業株式会社 Stencil printing machine
DE102004005577B4 (en) * 2003-02-14 2007-10-04 Heidelberger Druckmaschinen Ag Device for tensioning an elevator on a cylinder of a printing material processing machine
US8943969B2 (en) * 2008-02-26 2015-02-03 Maria Teresa A. Castillo Flexo cushion

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315311A1 (en) * 1993-04-30 1994-11-10 Roland Man Druckmasch Plate cylinder for a printing machine
DE102019101172A1 (en) 2019-01-17 2020-07-23 Koenig & Bauer Ag Forme cylinder with holding device and a flexo applicator
EP3771563A1 (en) 2019-08-02 2021-02-03 Koenig & Bauer AG Form cylinder and method for adjusting a clamping force in a holding device
DE102019120961A1 (en) * 2019-08-02 2021-02-04 Koenig & Bauer Ag Form cylinder, flexographic applicator and method for adjusting a clamping force in a holding device
DE102020106729A1 (en) 2020-03-12 2021-09-16 Koenig & Bauer Ag Printing machine with a device for detecting the presence of an application form and a method for supplying an application form
WO2021180402A1 (en) 2020-03-12 2021-09-16 Koenig & Bauer Ag Printing machine having a device for detecting the presence of an application forme and method for feeding an application forme

Also Published As

Publication number Publication date
CS619388A2 (en) 1990-08-14
DD282421A5 (en) 1990-09-12
US4862800A (en) 1989-09-05
CS274436B2 (en) 1991-04-11
DE3876354D1 (en) 1993-01-14
EP0308799A2 (en) 1989-03-29
JPH01108046A (en) 1989-04-25
DE3731642A1 (en) 1989-03-30
EP0308799A3 (en) 1989-05-24
JPH0615236B2 (en) 1994-03-02

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