EP0995597A1 - Plate cylinder of a printing press with plate tensioning device - Google Patents
Plate cylinder of a printing press with plate tensioning device Download PDFInfo
- Publication number
- EP0995597A1 EP0995597A1 EP99120106A EP99120106A EP0995597A1 EP 0995597 A1 EP0995597 A1 EP 0995597A1 EP 99120106 A EP99120106 A EP 99120106A EP 99120106 A EP99120106 A EP 99120106A EP 0995597 A1 EP0995597 A1 EP 0995597A1
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- EP
- European Patent Office
- Prior art keywords
- plate
- eccentric shaft
- finger
- printing machine
- machine 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means
Definitions
- the present invention relates generally to printing machines, particularly one Plate cylinder with a plate clamping device according to the preamble of claim 1.
- Printing machines in particular offset printing machines, generally comprise Plate cylinder, on which printing plates are applied, which the image to be printed contain.
- the ends of the pressure plate are axially on the plate cylinder extending gap inserted and held therein by a clamping device. To the plate Keeping them firmly in place is often a complex process to manufacture and therefore costly clamping device necessary. Through the ends of the Pressure plate creates a slit on the outer surface of the plate. To avoid Vibrations and waste are desirable to keep this gap as narrow as possible hold.
- a tensioning device includes a resilient acting pressure element, which exerts a force to the plate during the To keep the printing operation in position.
- this jig is very complicated and includes many different, u. U. complex to manufacture and maintain components.
- the present invention relates to a printing press with a plate cylinder the peripheral surface of which is an axial gap with a first side and a second side runs and the one along the first side of the gap at least partially open axial Has bore or a channel with a bore axis.
- the leading edge and the The rear edge of a printing plate is inserted into the gap.
- Eccentric shaft arranged which is eccentric with respect to the bore axis is rotatable that it can selectively apply a force to the front edge and the rear edge of the Can exert pressure plate.
- finger-like Protrusions formed by openings formed in the front and rear edges reach through and the front and / or rear edge of the pressure plate during a rotation pulling the shaft into the cylinder chamber on the one hand and moving the Plate ends from the cylinder gap, d. H. a detachment of the printing plate from the plate cylinder prevent effectively.
- the finger-like projections are preferably only on the arranged both ends of the eccentric shaft; but also the possibility consists of a plurality of finger-like projections at regular intervals along to arrange the eccentric shaft, thereby increasing the reliability of the invention Plate clamping device is additionally increased.
- the finger-like projections to minimize the Plate response have a suitable cross-sectional shape to avoid the danger the tearing of the front and / or rear edge of the pressure plate during the clamping process and to be further reduced in continuous printing operations at high press speeds.
- the eccentric shaft according to the present invention can also be used as desired Friction ratio between the front or back edge of the pressure plate and the shaft preferably have surfaces of different properties.
- the invention preferably also comprises a device arranged on the shaft for turning the same, which in the simplest case is a wrench or a Can be a wrench etc. In the same way there is the possibility of going through the shaft to turn an engine.
- the eccentric shaft can be used to lock the shaft in a certain position, e.g. B. in a variety of intended rotational positions preferably also various holding devices, e.g. B. clamps, other eccentrics or Latches etc. may be provided.
- a certain position e.g. B. in a variety of intended rotational positions
- various holding devices e.g. B. clamps, other eccentrics or Latches etc.
- FIG. 1 shows a schematic illustration of an offset printing machine 100, preferably a web-fed offset printing machine, with a first plate cylinder 4, a first Blanket cylinder 14, a second blanket cylinder 34 and a second Plate cylinder 44.
- Both plate cylinders 4, 44 can be designed according to the invention, as described in more detail below.
- Fig. 2 shows a printing plate 1 of the printing press 100, with a leading edge 1A and one Trailing edge 1B.
- the plate cylinder 4 carrying the printing plate 1 has a plate gap 3 with a first side 3A and a second side 3B into which the leading edge 1A and Trailing edge 1B are insertable.
- An eccentric shaft 2 comprises one with respect to one Bore axis 35 eccentric axis 20.
- the eccentric shaft 2 is in a bore 5 of the Plate cylinder 4 preferably in the vicinity of the front and rear edges 1A, 1B receiving plate gap 3 rotatably and can be done by hand or automatically via a, schematically indicated by the reference numeral 40, or Device arranged on both sides of the eccentric shaft 2 is moved or rotated and preferably also be moved in the axial direction.
- the eccentric shaft 2 can exert a force or pressure on the front and Exercise the rear edge 1A, 1B of the pressure plate in order to urge and close it jam so that undesired movement of the front and rear edges 1A, 1B and errors in the printed image can be prevented. It also prevents that the front and rear edge 1A, 1B at high printing speed from the gap 3rd slip out.
- Fig. 3 shows a second embodiment of the invention, in which a printing plate 1 with a Front edge 1A and a rear edge 1B is applied to the plate cylinder 4.
- the Plate cylinder 4 has a plate gap 3, which the front edge 1A and Takes up rear edge 1B.
- An eccentric shaft 2 has one with respect to a bore axis 35 on a hole 5 formed in the plate cylinder 4 and eccentric axis 20 preferably in the vicinity of the one receiving the front and rear edges 1A, 1B Plate gap 3 arranged.
- the bore has an additional recess into which a Finger-like projection 22 is movable.
- FIG. 4, 5 and 6 show differently shaped finger-like projections for holding the plate, e.g. B. a projection 122 with a rectangular cross section, a projection 222 with a triangular cross section and a projection 322 with a semicircular cross section. It is conceivable that a plurality of projections axially along the eccentric shaft 2 can be provided and that any combination on the eccentric shaft differently formed projections can be used.
- the distance between the Ends 1A and 1B of the printing plate and the printing plate ends 1A, 1B facing Edges of the openings 15 can for example be in the range between 0.5 mm and 5-10 mm lie, the openings 15 for a better engagement of the finger-like projections 22-322 when rotating the eccentric shaft, for example, be formed like an elongated hole can.
- the distance between the edge of the plate ends is 1A, 1B and always measure this facing edge of the openings 15 sufficiently that a secure hold of the printing plate on the plate cylinder 4 even at the highest Production speeds are still ensured.
- the eccentric shaft 2 has a roughened surface has to the coefficient of friction between the surfaces of the shaft and the Ends 1A, 1B of the pressure plate increase, which makes the clamping process more advantageous Way is improved.
- eccentric shaft 2 On the eccentric shaft 2 can be used to determine the eccentric shaft 2 in different Rotational positions a variety of holding devices, e.g. B. clamps, additional eccentrics or latches can be arranged to prevent loosening of the plate and that To facilitate application of the plate to the plate cylinder.
- holding devices e.g. B. clamps, additional eccentrics or latches can be arranged to prevent loosening of the plate and that To facilitate application of the plate to the plate cylinder.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Screen Printers (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft allgemein Druckmaschinen, insbesondere einen
Plattenzylinder mit einer Plattenspannvorrichtung gemäß dem Oberbegriff von Anspruch 1.The present invention relates generally to printing machines, particularly one
Plate cylinder with a plate clamping device according to the preamble of
Druckmaschinen, insbesondere Offset-Druckmaschinen umfassen in der Regel Plattenzylinder, auf welche Druckplatten aufgebracht werden, welche das zu druckende Bild enthalten. Die Enden der Druckplatte werden in einen axial auf dem Plattenzylinder verlaufenden Spalt eingefügt und darin von einer Spannvorrichtung gehalten. Um die Platte unverrückbar in ihrer Position zu halten, ist oft eine aufwendig herzustellende und somit kostenintensive Spannvorrichtung nötig. Durch die in den Spalt eingefügten Enden der Druckplatte entsteht ein Schlitz auf der Außenoberfläche der Platte. Zur Vermeidung von Vibrationen und Makulatur ist es wünschenswert, diesen Spalt so schmal wie möglich zu halten.Printing machines, in particular offset printing machines, generally comprise Plate cylinder, on which printing plates are applied, which the image to be printed contain. The ends of the pressure plate are axially on the plate cylinder extending gap inserted and held therein by a clamping device. To the plate Keeping them firmly in place is often a complex process to manufacture and therefore costly clamping device necessary. Through the ends of the Pressure plate creates a slit on the outer surface of the plate. To avoid Vibrations and waste are desirable to keep this gap as narrow as possible hold.
In der DE 44 01 201 A1 ist z. B. ein Zylinder mit darauf aufgebrachter Druckplatte beschrieben. Die Enden der Druckplatte sind in einen Spalt eingefügt und werden darin von einer Spannvorrichtung gehalten, welche einen mit Druck beaufschlagbaren Schlauch umfaßt. Wird der Schlauch z. B. mit Druckluft beaufschlagt, so wird eine Kraft auf die Enden der Druckplatte ausgeübt, wodurch die Enden in ihrer Position gehalten werden. Ein derartiger mit Druck beaufschlagbarer Schlauch kann jedoch im Lauf der Zeit undicht oder auf andere Weise fehlerhaft werden.In DE 44 01 201 A1 z. B. a cylinder with a printing plate attached to it described. The ends of the pressure plate are inserted in a gap and are in by a tensioning device is held, which has a pressurizable hose includes. If the hose z. B. pressurized with compressed air, a force is applied to the Exercised ends of the pressure plate, whereby the ends are held in position. On such a pressurized hose may leak or leak over time become faulty in other ways.
In der DE 195 33 178 A1 ist ebenfalls beschrieben, wie die Enden einer Druckplatte in einen Spalt eines Plattenzylinders eingefügt sind. Eine Spannvorrichtung umfaßt ein federnd wirkendes Druckelement, welches eine Kraft ausübt, um die Platte während des Druckbetriebs in Position zu halten. Diese Spannvorrichtung ist jedoch sehr kompliziert und umfaßt viele verschiedene, u. U. aufwendig herzustellende und zu wartende Bauteile.DE 195 33 178 A1 also describes how the ends of a printing plate into one Gap of a plate cylinder are inserted. A tensioning device includes a resilient acting pressure element, which exerts a force to the plate during the To keep the printing operation in position. However, this jig is very complicated and includes many different, u. U. complex to manufacture and maintain components.
DE 44 15 621 A1 beschreibt ebenfalls eine federnd wirkende Spannvorrichtung zum
Befestigen der Enden einer Druckplatte in einem Spalt eines Plattenzylinders. Die in Fig. 1
und 2 gezeigten Ausführungsbeispiele zeigen verschiedene federnd wirkende Elemente,
welche die Enden der Druckplatte kontaktieren und diese in ihrer Position halten. Diese
Vorrichtung ist jedoch ebenfalls störanfällig, da die Federelemente im Lauf der Zeit ihre
Elastizität verlieren können und zum Befestigen mindestens zwei Bauteile nötig sind.
Demgemäß ist es eine Aufgabe der vorliegenden Erfindung, eine leicht herstellbare, zuverlässig funktionierende und schnell zu betätigende Plattenspannvorrichtung zu schaffen.Accordingly, it is an object of the present invention to provide an easy to manufacture to create reliably functioning and quickly operated plate clamping devices.
Diese Aufgabe wird durch die Merkmale von Anspruch 1 und 9 gelöst.This object is solved by the features of
Weitere Vorteile der Erfindung ergeben sich aus den Unteransprüchen.Further advantages of the invention emerge from the subclaims.
Die vorliegende Erfindung betrifft eine Druckmaschine mit einem Plattenzylinder, auf dessen Umfangsoberfläche ein axialer Spalt mit einer ersten Seite und einer zweiten Seite verläuft und der eine entlang der ersten Seite des Spalts zumindest teilweise offene axiale Bohrung oder einen Kanal mit einer Bohrungsachse aufweist. Die Vorderkante und die Hinterkante einer Druckplatte sind in den Spalt eingefügt. In der Bohrung ist eine Exzenterwelle angeordnet, welche bezüglich der Bohrungsachse in einer Weise exzentrisch drehbar ist, daß sie wahlweise eine Kraft auf die Vorderkante und die Hinterkante der Druckplatte ausüben kann. An der Umfangsoberfläche der Exzenterwelle sind fingerartige Vorsprünge gebildet, die durch in der Vorder- und Hinterkante gebildete Öffnungen hindurchgreifen und die Vorder- und/oder Hinterkante der Druckplatte bei einer Drehung der Welle zum einen in den Zylinderraum ziehen und zum anderen ein Herausbewegen der Plattenenden aus dem Zylinderspalt, d. h. ein Ablösen der Druckplatte vom Plattenzylinder wirkungsvoll verhindern. Die fingerartigen Vorsprünge sind vorzugsweise lediglich an den beiden Enden der Exzenterwelle angeordnet; wobei jedoch ebenfalls die Möglichkeit besteht, eine Vielzahl von fingerartigen Vorsprüngen in gleichmäßigen Abständen entlang der Exzenterwelle anzuordnen, wodurch die Zuverlässigkeit der erfindungsgemäßen Plattenspannvorrichtung zusätzlich erhöht wird.The present invention relates to a printing press with a plate cylinder the peripheral surface of which is an axial gap with a first side and a second side runs and the one along the first side of the gap at least partially open axial Has bore or a channel with a bore axis. The leading edge and the The rear edge of a printing plate is inserted into the gap. There is one in the hole Eccentric shaft arranged which is eccentric with respect to the bore axis is rotatable that it can selectively apply a force to the front edge and the rear edge of the Can exert pressure plate. On the peripheral surface of the eccentric shaft are finger-like Protrusions formed by openings formed in the front and rear edges reach through and the front and / or rear edge of the pressure plate during a rotation pulling the shaft into the cylinder chamber on the one hand and moving the Plate ends from the cylinder gap, d. H. a detachment of the printing plate from the plate cylinder prevent effectively. The finger-like projections are preferably only on the arranged both ends of the eccentric shaft; but also the possibility consists of a plurality of finger-like projections at regular intervals along to arrange the eccentric shaft, thereby increasing the reliability of the invention Plate clamping device is additionally increased.
Weiterhin kann es vorgesehen sein, daß die fingerartigen Vorsprünge zur Minimierung der Plattenbeansprachung eine geeignete Querschnittsform aufweisen, um hierdurch die Gefahr des Einreißens der Vorder- und/oder Hinterkante der Druckplatte beim Spannvorgang und beim Fortdruckbetrieb mit hohen Maschinengeschwindigkeiten weiter zu reduzieren.Furthermore, it can be provided that the finger-like projections to minimize the Plate response have a suitable cross-sectional shape to avoid the danger the tearing of the front and / or rear edge of the pressure plate during the clamping process and to be further reduced in continuous printing operations at high press speeds.
Die Exzenterwelle gemäß der vorliegenden Erfindung kann ferner je nach gewünschtem Reibungsverhältnis zwischen der Vorder- oder Hinterkante der Druckplatte und der Welle vorzugsweise Oberflächen unterschiedlicher Beschaffenheit aufweisen.The eccentric shaft according to the present invention can also be used as desired Friction ratio between the front or back edge of the pressure plate and the shaft preferably have surfaces of different properties.
Die Erfindung umfaßt vorzugsweise ebenfalls eine an der Welle angeordnete Vorrichtung zum Drehen derselben, welche im einfachsten Falle ein Schraubenschlüssel oder ein Bolzenschlüssel etc. sein kann. In gleicher Weise besteht die Möglichkeit, die Welle durch einen Motor zu drehen.The invention preferably also comprises a device arranged on the shaft for turning the same, which in the simplest case is a wrench or a Can be a wrench etc. In the same way there is the possibility of going through the shaft to turn an engine.
An einem Ende oder an beiden Enden der Exzenterwelle können zum Feststellen der Welle in einer bestimmten Position, z. B. in einer Vielzahl von vorgesehenen Drehpositionen vorzugsweise auch verschiedene Haltevorrichtungen, z. B. Klemmen, weitere Exzenter oder Rastklinken etc. vorgesehen sein.At one end or at both ends of the eccentric shaft can be used to lock the shaft in a certain position, e.g. B. in a variety of intended rotational positions preferably also various holding devices, e.g. B. clamps, other eccentrics or Latches etc. may be provided.
Die vorliegende Erfindung wird im folgenden anhand der nachfolgend aufgeführten Zeichnungen näher erläutert.The present invention will hereinafter be described with reference to the following Drawings explained in more detail.
Es zeigen:
- Fig. 1
- eine Druckmaschine gemäß der vorliegenden Erfindung,
- Fig. 2
- eine Teilansicht einer Ausführungsform der vorliegenden Erfindung mit einer Exzenterwelle im Innern eines Plattenzylinders,
- Fig. 3
- eine Teilansicht einer weiteren Ausführungsform der vorliegenden Erfindung;
- Fig. 4
- eine Seitenansicht einer Exzenterwelle gemäß der vorliegenden Erfindung mit einem Vorsprung mit rechteckigem Querschnitt,
- Fig. 5
- eine Seitenansicht einer Exzenterwelle gemäß der vorliegenden Erfindung mit einem Vorsprung mit dreieckigem Querschnitt,
- Fig. 6
- eine Seitenansicht einer Exzenterwelle gemäß der vorliegenden Erfindung mit einem Vorsprung mit halbkreisförmigem Querschnitt.
- Fig. 1
- a printing press according to the present invention,
- Fig. 2
- 2 shows a partial view of an embodiment of the present invention with an eccentric shaft inside a plate cylinder,
- Fig. 3
- a partial view of another embodiment of the present invention;
- Fig. 4
- 2 shows a side view of an eccentric shaft according to the present invention with a projection with a rectangular cross section,
- Fig. 5
- 2 shows a side view of an eccentric shaft according to the present invention with a projection with a triangular cross section,
- Fig. 6
- a side view of an eccentric shaft according to the present invention with a projection with a semicircular cross section.
Fig. 1 zeigt eine schematische Darstellung einer Offset-Druckmaschine 100, vorzugsweise
einer Rollenrotations-Offsetdruckmaschine, mit einem ersten Plattenzylinder 4, einem ersten
Gummituchzylinder 14, einem zweiten Gummituchzylinder 34 und einem zweiten
Plattenzylinder 44. Auf den ersten und den zweiten Plattenzylinder 4, 44 sind Druckplatten
aufgebracht, welche die zu druckenden Bilder enthalten, die über den jeweiligen
Gummituchzylinder 14, 34 auf eine Bahn 200 übertragen werden. Beide Plattenzylinder 4,
44 können erfindungsgemäß ausgebildet sein, wie im folgenden näher beschrieben ist.1 shows a schematic illustration of an
Fig. 2 zeigt eine Druckplatte 1 der Druckmaschine 100, mit einer Vorderkante 1A und einer
Hinterkante 1B. Der die Druckplatte 1 tragende Plattenzylinder 4 weist einen Plattenspalt 3
mit einer ersten Seite 3A und einer zweiten Seite 3B auf, in den die Vorderkante 1A und die
Hinterkante 1B einführbar sind. Eine Exzenterwelle 2 umfaßt eine bezüglich einer
Bohrungsachse 35 exzentrische Achse 20. Die Exzenterwelle 2 ist in einer Bohrung 5 des
Plattenzylinders 4 vorzugsweise in der Nähe des die Vorder- und Hinterkante 1A, 1B
aufnehmenden Plattenspaltes 3 rotierbar aufgenommen und kann von Hand oder
automatisch über eine schematisch durch das Bezugszeichen 40 angedeutete, ein- oder
beidseitig an der Exzenterwelle 2 angeordnete Vorrichtung bewegt oder gedreht und
vorzugsweise auch in axialer Richtung verschoben werden. Durch Drehung im oder gegen
den Uhrzeigersinn kann die Exzenterwelle 2 eine Kraft bzw. Druck auf die Vorder- und
Hinterkante 1A, 1B der Druckplatte ausüben, um diese gegeneinander zu drängen und zu
verklemmen, so daß ein unerwünschtes Bewegen der Vorder- und Hinterkante 1A, 1B
sowie Fehler im Druckbild verhindert werden. Außerdem wird auf diese Weise verhindert,
daß die Vorder- und Hinterkante 1A, 1B bei hoher Druckgeschwindigkeit aus dem Spalt 3
herausrutschen. Fig. 2 shows a
Fig. 3 zeigt eine zweite Ausführungsform der Erfindung, in der eine Druckplatte 1 mit einer
Vorderkante 1A und einer Hinterkante 1B auf den Plattenzylinder 4 aufgebracht ist. Der
Plattenzylinder 4 weist einen PlattenSpalt 3 auf, welcher die Vorderkante 1A und die
Hinterkante 1B aufnimmt. Eine Exzenterwelle 2 weist eine bezüglich einer Bohrungsachse
35 einer im Plattenzylinder 4 geformten Bohrung 5 exzentrische Achse 20 auf und ist
vorzugsweise in der Nähe des die Vorder- und Hinterkante 1A, 1B aufnehmenden
Plattenspaltes 3 angeordnet. Die Bohrung weist eine zusätzliche Ausnehmung auf, in die ein
fingerartiger Vorsprung 22 verfahrbar ist. Bei Drehung der Exzenterwelle 2 greifen der oder
die fingerartigen Vorsprünge 22 durch Öffnungen 15 in der Vorderkante 1A und der
Hinterkante 1B der Druckplatte hindurch und verhindern durch den entstehenden
Formschluß zuverlässig ein Herausrutschen der Plattenenden 1A und 1B aus dem Spalt 3
der Druckplatte, wie dies in Fig. 3 gezeigt ist.Fig. 3 shows a second embodiment of the invention, in which a
Fig. 4, 5 und 6 zeigen verschiedenförmig ausgebildete fingerartige Vorsprünge zum Halten
der Platte, z. B. einen Vorsprung 122 mit rechteckigem Querschnitt, einen Vorsprung 222
mit dreieckigem Querschnitt und einen Vorsprung 322 mit halbkreisförmigem Querschnitt.
Hierbei ist es denkbar, daß axial entlang der Exzenterwelle 2 eine Vielzahl von Vorsprüngen
vorgesehen sein kann und daß auf der Exzenterwelle eine beliebige Kombination
verschieden ausgebildeter Vorsprünge eingesetzt werden kann.4, 5 and 6 show differently shaped finger-like projections for holding
the plate, e.g. B. a
Die in den Enden 1A und 1B der Druckplatte geformten, den jeweiligen fingerartigen
Vorsprüngen 22, 122, 222 und 322 zugeordneten Öffnungen besitzen hierbei im
wesentlichen dieselbe Querschnittsform wie der jeweilige fingerartige Vorsprung
(beispielsweise rechteckig, dreieckig oder halbkreisförmig). Der Abstand zwischen den
Enden 1A und 1B der Druckplatte und den den Druckplattenenden 1A, 1B zugewandten
Kanten der Öffnungen 15 kann beispielsweise im Bereich zwischen 0,5 mm und 5-10 mm
liegen, wobei die Öffnungen 15 für einen besseren Eingriff der fingerartigen Vorsprünge 22-322
beim Rotieren der Exzenterwelle beispielsweise auch langlochartig ausgebildet sein
können. In jedem Fall ist der Abstand zwischen der Kante der Plattenenden 1A, 1B und der
diesen zugewandten Kante der Öffnungen 15 stets so ausreichend bemessen, daß ein
sicherer Halt der Druckplatte auf dem Plattenzylinder 4 auch bei höchsten
Fortdruckgeschwindigkeiten noch sichergestellt ist.The respective finger-like ones formed in the
Weiterhin kann es vorgesehen sein, daß die Exzenterwelle 2 eine aufgerauhte Oberfläche
aufweist, um den Reibungskoeffizienten zwischen den Oberflächen der Welle und den
Enden 1A, 1B der Druckplatte zu erhöhen, wodurch der Spannvorgang in vorteilhafter
Weise verbessert wird.Furthermore, it can be provided that the
An der Exzenterwelle 2 können zum Feststellen der Exzenterwelle 2 in verschiedenen
Drehpositionen eine Vielzahl von Haltevorrichtungen, z. B. Klemmen, zusätzliche Exzenter
oder Rastklinken angeordnet sein, um ein Lockern der Platte zu verhindern und das
Aufbringen der Platte auf den Plattenzylinder zu erleichtern. On the
- 11
- Druckplatteprinting plate
- 1A1A
- VorderkanteLeading edge
- 1B1B
- HinterkanteTrailing edge
- 22nd
- ExzenterwelleEccentric shaft
- 33rd
- PlattenSpaltPlate gap
- 3A3A
- erste Seitefirst page
- 3B3B
- zweite Seitesecond page
- 44th
- erster Plattenzylinderfirst plate cylinder
- 55
- Bohrungdrilling
- 1414
- erster Gummituchzylinderfirst blanket cylinder
- 2020th
- exzentrische Achseeccentric axis
- 2222
- fingerartiger Vorsprungfinger-like projection
- 3434
- zweiter Gummituchzylindersecond blanket cylinder
- 3535
- BohrungsachseBore axis
- 4040
- Vorrichtung zum Drehen der ExzenterwelleDevice for rotating the eccentric shaft
- 4444
- zweiter Plattenzylindersecond plate cylinder
- 100100
- Offset-DruckmaschineOffset printing machine
- 122122
- fingerartiger Vorsprungfinger-like projection
- 200200
- Bahntrain
- 222222
- fingerartiger Vorsprungfinger-like projection
- 322322
- fingerartiger Vorsprungfinger-like projection
Claims (7)
dadurch gekennzeichnet,
daß die Exzenterwelle (2) an ihrer Oberfläche einen oder mehrere fingerartige Vorsprünge (22, 122, 222, 322) aufweist, welche unter Bildung einer formschlüssigen Verbindung in eine oder mehrere in der Vorderkante (1A) und der Hinterkante (1B) der Druckplatte gebildete Öffnungen (15) eingreifen.Printing machine with a plate cylinder, on the circumferential surface of which an axial gap (3) with a first side (3A) and a second side (3B) runs, which has an axial bore (3) at least partially open along the first side (3A) of the gap (3) 5) with a bore axis (35) and onto which a pressure plate (1) with a front edge (1A) and a rear edge (1B) that can be inserted into the gap (3) is applied, and wherein an eccentric shaft ( 2) is arranged, which can be rotated eccentrically with respect to the bore axis, in such a way that the front edge (1A) and the rear edge (1B) of the pressure plate are acted upon by a tensioning force which tension the plate,
characterized,
that the eccentric shaft (2) has on its surface one or more finger-like projections (22, 122, 222, 322), which are formed by forming a positive connection in one or more in the front edge (1A) and the rear edge (1B) of the pressure plate Engage openings (15).
dadurch gekennzeichnet,
daß der fingerartige Vorsprung (222) einen dreieckigen Querschnitt aufweist.Printing machine according to claim 2,
characterized,
that the finger-like projection (222) has a triangular cross section.
dadurch gekennzeichnet,
daß der fingerartige Vorsprung (122) einen rechteckigen Querschnitt aufweist.Printing machine according to claim 2,
characterized,
that the finger-like projection (122) has a rectangular cross section.
dadurch gekennzeichnet,
daß der fingerartige Vorsprung (322) einen halbkreisförmigen Querschnitt aufweist.Printing machine according to claim 2,
characterized,
that the finger-like projection (322) has a semicircular cross section.
dadurch gekennzeichnet,
daß axial entlang der Exzenterwelle (2) eine Vielzahl von fingerartigen Vorsprüngen (22, 122, 222, 322) angeordnet ist, welche durch axiale Verschiebung der Exzenterwelle (2) in der Bohrung (5) verfahrbar sind.Printing machine according to one of the preceding claims,
characterized,
that a plurality of finger-like projections (22, 122, 222, 322) is arranged axially along the eccentric shaft (2), which can be moved in the bore (5) by axial displacement of the eccentric shaft (2).
gekennzeichnet durch
eine Vorrichtung (40), insbesondere einen Bolzenschlüssel, welche mit der Exzenterwelle (2) verbindbar ist.Printing machine according to one of the preceding claims,
marked by
a device (40), in particular a wrench, which can be connected to the eccentric shaft (2).
dadurch gekennzeichnet,
daß die Exzenterwelle (2) eine aufgerauhte Oberfläche aufweist.Printing machine according to one of the preceding claims,
characterized,
that the eccentric shaft (2) has a roughened surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/178,226 US6131513A (en) | 1998-10-23 | 1998-10-23 | Printing press with simple lock-up plate cylinder |
| US178226 | 2002-06-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0995597A1 true EP0995597A1 (en) | 2000-04-26 |
| EP0995597B1 EP0995597B1 (en) | 2002-08-21 |
Family
ID=22651723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99120106A Expired - Lifetime EP0995597B1 (en) | 1998-10-23 | 1999-10-08 | Plate cylinder of a printing press with plate tensioning device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6131513A (en) |
| EP (1) | EP0995597B1 (en) |
| AT (1) | ATE222539T1 (en) |
| DE (2) | DE59902404D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1170124A1 (en) * | 2000-07-06 | 2002-01-09 | Tokyo Kikai Seisakusho Ltd. | Tensioning device for attaching a cover to a cylinder of a printing press |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080282917A1 (en) * | 2007-05-15 | 2008-11-20 | Goss International Americas, Inc. | Cylinder with reduced inertia variation and method |
| EP2253471A1 (en) * | 2009-05-18 | 2010-11-24 | Müller Martini Holding AG | Pressurised cylinder with rubber blanket for a roller offset printing press |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4415622A1 (en) * | 1994-05-04 | 1995-11-09 | Roland Man Druckmasch | Fixture for flexible printer plate to cylinder of rotary printer |
| DE19642141C1 (en) * | 1996-10-12 | 1998-06-18 | Koenig & Bauer Albert Ag | Device for releasing plates |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3016010A (en) * | 1959-08-20 | 1962-01-09 | Cottrell Company | Printing press plate clamping means for prebent wrap around printing plates of soft material |
| US3727551A (en) * | 1971-07-22 | 1973-04-17 | North American Rockwell | Reversible lockup for flexible printing plate |
| US4495865A (en) * | 1983-03-15 | 1985-01-29 | Komori Printing Machinery Co., Ltd. | Plate clamping device of web-fed rotary printing press |
| DE3326215C2 (en) * | 1983-07-21 | 1986-04-03 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Device for clamping a printing plate or a rubber blanket |
| DE4005093C1 (en) * | 1990-02-17 | 1991-06-20 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | Forme clamp for printing cylinder - has channel in cylinder with spindle to clamp form eccentrically |
| DE19509563C2 (en) * | 1995-03-16 | 1997-01-23 | Koenig & Bauer Albert Ag | Cylinder with a device for clamping plates |
| DE19509559C2 (en) * | 1995-03-16 | 1997-01-23 | Koenig & Bauer Albert Ag | Jig |
| US5749298A (en) * | 1997-06-10 | 1998-05-12 | Reeves Brothers, Inc. | Arrangement for securing a printing blanket to a cylinder |
-
1998
- 1998-10-23 US US09/178,226 patent/US6131513A/en not_active Expired - Fee Related
-
1999
- 1999-10-08 DE DE59902404T patent/DE59902404D1/en not_active Expired - Lifetime
- 1999-10-08 AT AT99120106T patent/ATE222539T1/en not_active IP Right Cessation
- 1999-10-08 EP EP99120106A patent/EP0995597B1/en not_active Expired - Lifetime
- 1999-10-11 DE DE19948954A patent/DE19948954A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4415622A1 (en) * | 1994-05-04 | 1995-11-09 | Roland Man Druckmasch | Fixture for flexible printer plate to cylinder of rotary printer |
| DE19642141C1 (en) * | 1996-10-12 | 1998-06-18 | Koenig & Bauer Albert Ag | Device for releasing plates |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1170124A1 (en) * | 2000-07-06 | 2002-01-09 | Tokyo Kikai Seisakusho Ltd. | Tensioning device for attaching a cover to a cylinder of a printing press |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE222539T1 (en) | 2002-09-15 |
| DE19948954A1 (en) | 2000-04-27 |
| DE59902404D1 (en) | 2002-09-26 |
| EP0995597B1 (en) | 2002-08-21 |
| US6131513A (en) | 2000-10-17 |
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