EP0739728B1 - Process and device for attaching a printing plate to a cylinder - Google Patents

Process and device for attaching a printing plate to a cylinder Download PDF

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Publication number
EP0739728B1
EP0739728B1 EP96105769A EP96105769A EP0739728B1 EP 0739728 B1 EP0739728 B1 EP 0739728B1 EP 96105769 A EP96105769 A EP 96105769A EP 96105769 A EP96105769 A EP 96105769A EP 0739728 B1 EP0739728 B1 EP 0739728B1
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EP
European Patent Office
Prior art keywords
press
plate
printing
tension
printing plate
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
EP96105769A
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German (de)
French (fr)
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EP0739728A3 (en
EP0739728A2 (en
Inventor
Glenn A. Guaraldi
Warren H. Jarrard
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.)
Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0739728A2 publication Critical patent/EP0739728A2/en
Publication of EP0739728A3 publication Critical patent/EP0739728A3/en
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Publication of EP0739728B1 publication Critical patent/EP0739728B1/en
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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
    • B41F27/1206—Feeding to or removing from the forme cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/60—Devices for transferring printing plates
    • B41P2227/62—Devices for introducing printing plates

Definitions

  • the present invention relates to a method and a Device for clamping a printing plate on one Cylinder.
  • US 5,284,093 discloses a plate cylinder with a semi-automatic plate clamping device.
  • An Rotatable plate cylinder carrying pressure plate has one open channel and a tensioning element on that in the channel is movably attached.
  • the tensioning element is in the channel inside in a closed position and outside in an open position movable.
  • the clamping element becomes one subjected to the first centrifugal force, which forces it to Rotate the plate cylinder from the closed position to move outwards.
  • a compensation element is used when turning the plate cylinder of a second centrifugal force subject. Connecting bolts align the second Centrifugal force compared to the first centrifugal force the clamping element.
  • US 4,577,560 discloses a gapless plate tensioner for offset printing cylinders. As can be seen, they are one stationary jaw and a movable jaw in the Cylinder of an offset rotary printing machine attached.
  • the Jaws are opposite to undercut ones Surfaces that form a recess in which end parts an offset plate or a metal-supported rubber blanket be clamped between the jaws.
  • the end parts have a slight tendency to sit on the outer edge of the Jaws to compress what is overcome by a Anti-crawling device that acts when the jaws close the end parts is deformed and one on the end parts directed, inward force.
  • EP 0 531 748 A1 discloses a device for a Plate change.
  • One stored in a sliding device The roller is opposite a tensioning device in the channel Printing unit cylinder attached.
  • the outer surface of the roller comes into contact with the rear edge of a pressure plate, while the roller is perpendicular to the printing cylinder emotional. Since the roller only covers a linear area, it is difficult to use this roller for smooth simultaneous Contact with the leading edge and the trailing edge of one insert truck plate.
  • US 5,211,112 discloses a device for clamping a Plate on a plate cylinder.
  • This device includes a pair of right and left support levers, one Plate pressure roller and a plate pressure pad with one Spring element.
  • the plate pressure roller forces the plate against the circumferential surface of the plate cylinder, if this around the Plate cylinder is wound.
  • the plate pressure pad is attached to a bracket to hold the free ends of the To connect the pair of support levers, and has an elastic Surface for pressing the rear end of the plate on.
  • EP 0 551 166 A1 shows a plate changing device for Printing machines.
  • actuators including one Plate pressure roller arranged.
  • the front edge of a pressure plate between the Gripper surfaces of a plate leading edge clamping device inserted, and the trailing edge of the pressure plate is between the gripper surfaces of a plate trailing edge clamping device introduced.
  • the platen roller does not force both edges of the Pressure plate simultaneously in the respective Plate clamp while the plate cylinder is in a certain rotational position.
  • EP 0639454 A1 relates to a device with a retractable hook for holding a printing plate on a support cylinder in a Rotary printing press and a rotary printing press with one such device.
  • the printing plate with a front edge on it the outer surface of the support cylinder is held, by the way a hook of a rear end fold held on a hook that with respect to the support cylinder between a front end position, in which he a protrusion on the outer peripheral surface Allows you to hook or unhook the rear end folds and one retracted position in which it is movable with respect to this outer Peripheral surface is withdrawn and the pressure plate him on the outer Keeps the peripheral surface under tension in the wound state.
  • an apparatus for Clamping a printing plate on a printing unit cylinder features specified in claims 1 and 15, respectively.
  • the Pressing device the front edge and the rear edge of the Pressure plate at the same time under the tensioning rail Plate cylinder.
  • the pressure bar contacts at her Treatment into the plate cylinder the surface of the Tensioning rail.
  • the protective device can be a wound around the pressing device and with a Clamping element acted upon by spring force Be protective sleeve.
  • the protective sleeve can, for. B. from one rubber-like material or made of polyurethane, polyester or the like or be made of elastic fabric.
  • the protective sleeve can be moved on the Pressure device be attached.
  • a pressure bar according to the embodiments of the present invention can be moved by a piston which by supplying pressure (e.g. air or Liquid pressure pressure) in a in the housing of the Pressure device provided pressure chamber is actuated.
  • pressure e.g. air or Liquid pressure pressure
  • Fig. 1 shows a printing unit with a plate cylinder 1 and a blanket cylinder 2. On the peripheral surface of the Plate cylinder 1, a pressure plate 6 is to be attached.
  • the plate cylinder 1 are a first applicator roller 3, one second applicator roller 4 and a third applicator roller 5 assigned to transfer color to its surface. Of the Plate cylinder 1 transfers a print image to the Blanket cylinder 2 and this transfers the print image a web of material.
  • the pressure plate 6 attached to the plate cylinder has a leading edge 7 and a trailing edge 8 (as in FIG. 2 shown), which is clamped by means of a clamping rail 11 become.
  • the tensioning rail 11 is in an open channel in the plate cylinder 1 shown opening, wherein the The front and rear edge of the panel are recorded, attached and consists of an elongated body 12, the is connected to a leveling mass 13.
  • the Leveling compound 13 is acted upon by springs 17 (e.g. Coil springs or the like.)
  • springs 17 e.g. Coil springs or the like.
  • a holding element, for. Legs Retaining spring 14 is on by means of a fastener 15 the tensioning rail 11 attached.
  • the pressing device 9 comprises a pressure bar 10, which is in a holder is included, which is rotatable about an axis of rotation 18 is appropriate.
  • the axis of rotation 18 is in turn with a Bracket 19 connected under the on the Plate cylinder 1 plate 6 is arranged.
  • Fig. 2 shows the clamped, partially around the Plate cylinder 1 wound plate 6.
  • the tensioning rail 11 automatically emerges from the peripheral surface the plate cylinder (e.g. due to liquid pressure and / or centrifugal force) while the plate cylinder still spins.
  • the plate leading edge 7 remains on the outer End 25 of the plate cylinder 1 bent after the Clamping rail 11 in the open channel 24 of the Plate cylinder 1 has moved laterally.
  • the Press device 9 keeps its downward inclined Position so that the plate 6 has an area between the Circumferential surface of the plate cylinder 1 and the surface of the Pressure bar 10, which is retracted in its closed, remains inactive position, can happen.
  • the tensioning rail 11 also has an upper recess 20 and a lower recess 21, in which the retaining spring 14 is attached. Furthermore, the tensioning rail 11 has one end part 22 thereof a stop surface 23 to limit the movement of the Tensioning rail 11 within the open channel 24 of the Plate cylinder 1 on.
  • Fig. 3 shows the clamping rail 11 of the plate cylinder 1 in its rotational position in relation to the pressing device 9. 3, the plate cylinder 1 has a Revolution finished.
  • the tensioning rail 11 is still in her open position.
  • the rear edge 8 of the plate 6 is now in the retaining spring 14 of the tensioning rail 11 of the Plate cylinder 1 has been inserted and the Front edge 7 of the plate 6 remains over the outer end 25 of the Plate cylinder bent.
  • the plate trailing edge 8 is now between the outer surface 16 of the tensioning rail 11 and the Surface of the pressure bar 10 held.
  • the rear edge 8 provisionally pressed into the tensioning rail 11, if that Outer end 25, the upper corner 35 (see Fig. 5) of the Pressure bar 10 happens.
  • FIG. 4 shows the pressing device 9 and the tensioning rail 11 in their activated state, around the front and rear edge the plate 6 to be clamped on the plate cylinder fasten.
  • the plate cylinder 1 is stopped and the pressure bar 10 activated, for. B.
  • the Clamping rail 11 is by means of the balancing mass 13th acting coil springs 17 in the open channel 24 of the Plate cylinder withdrawn. While the Retracts the tensioning rail 11 into the plate cylinder channel, presses the pressure bar 10 against the Plate trailing edge 8 to ensure smooth clamping of the Plate to the peripheral surface of the plate cylinder 1 guarantee.
  • Fig. 5 shows the pressing device 9 in detail in its deactivated, closed position.
  • the embodiment is the pressure bar 10 in one Recess 31 of a housing 26 added.
  • the housing 26 further comprises a spring-loaded clamping plate 30 the clamping plate 30 is a protective device - z. B. in Form of a protective sleeve 27 made of any flexible, elastic or rigid material can, tightly attached to the pressure device and this thus enveloped.
  • the housing 26 includes a bore 33 for Supply of fluid pressure (e.g. hydraulic or pneumatic pressure) to move a piston 28.
  • a seal 32 e.g. B. an O-ring or the like. Mistake.
  • the left contacts End of the piston 28, the pressure bar 10, and the right end of the piston 28 is located opposite a pressure chamber 34 (see Fig. 6).
  • the piston 28 is in an activated position shown. Through the bore 33 fluid pressure Chamber 34 directed. Thus, the piston 28 moves laterally, whereby the pressure bar 10 emerges from the recess 31 moved and contacted the plate trailing edge 8. In the lateral movement of the piston 28 and the pressure bar 10 the protective sleeve 27 also moves. The protective sleeve 27 causes the spring 29 of the spring-loaded Clamping plate 30 contracts and the clamping plate 30 is moved accordingly in the lateral direction. Consequently the protective sleeve 26 remains during the movement of the Pressure bar 10 wrapped tightly around the outside of the housing 26. The protective sleeve 27 keeps all contaminants away between the pressure bar 10 and the housing 26 of the Pressure bar could come.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Abstract

The rail (11) in the opening in the printing cylinder (1) has a holder (14) gripping one or more edges (7) of the plate (6). A pressure mechanism (9) has a bar (10) covering the clamping area of the cylinder, together with a guard. The pressure mechanism can simultaneously thrust the leading and trailing edges of the plate into the rail, which can be retracted into the opening, while during this movement the bar comes into contact with a face (16) on the rail.

Description

Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zum Aufspannen einer Druckplatte auf einen Zylinder.The present invention relates to a method and a Device for clamping a printing plate on one Cylinder.

US 5,284,093 offenbart einen Plattenzylinder mit einer halb-automatischen Plattenspanneinrichtung. Ein eine Druckplatte tragender rotierbarer Plattenzylinder weist einen offenen Kanal und ein Spannelement auf, das in dem Kanal bewegbar angebracht ist. Das Spannelement ist in dem Kanal nach innen in eine geschlossene Position und nach außen in eine offene Position bewegbar. Das Spannelement wird einer ersten Zentrifugalkraft unterworfen, die es zwingt, sich beim Drehen des Plattenzylinders von der geschlossenen Position nach außen zu bewegen. Ein Ausgleichselement wird beim Drehen des Plattenzylinders einer zweiten Zentrifugalkraft unterworfen. Verbindungsbolzen richten die zweite Zentrifugalkraft gegenüber der ersten Zentrifugalkraft auf das Spannelement.US 5,284,093 discloses a plate cylinder with a semi-automatic plate clamping device. An Rotatable plate cylinder carrying pressure plate has one open channel and a tensioning element on that in the channel is movably attached. The tensioning element is in the channel inside in a closed position and outside in an open position movable. The clamping element becomes one subjected to the first centrifugal force, which forces it to Rotate the plate cylinder from the closed position to move outwards. A compensation element is used when turning the plate cylinder of a second centrifugal force subject. Connecting bolts align the second Centrifugal force compared to the first centrifugal force the clamping element.

US 4,577,560 offenbart eine spaltlose Plattenspanneinrichtung für Offsetdruckzylinder. Wie daraus hervorgeht, sind eine stationäre Klemmbacke und eine bewegbare Klemmbacke in dem Zylinder einer Offset-Rotationsdruckmaschine angebracht. Die Klemmbacken befinden sich gegenüber unterschnittenen Oberflächen, die eine Ausnehmung formen, in welcher Endteile einer Offsetplatte oder eines metallgestützten Gummituchs zwischen den Klemmbacken festgeklemmt werden. Die Endteile haben eine geringe Neigung, sich am äußeren Rand der Klemmbacken zu stauchen, was überwunden wird durch ein Antikriechorgan, das beim Schließen der Klemmbacken zwischen den Endteilen verformt wird und dabei eine auf die Endteile gerichtete, nach innen wirkende Kraft erzeugt. US 4,577,560 discloses a gapless plate tensioner for offset printing cylinders. As can be seen, they are one stationary jaw and a movable jaw in the Cylinder of an offset rotary printing machine attached. The Jaws are opposite to undercut ones Surfaces that form a recess in which end parts an offset plate or a metal-supported rubber blanket be clamped between the jaws. The end parts have a slight tendency to sit on the outer edge of the Jaws to compress what is overcome by a Anti-crawling device that acts when the jaws close the end parts is deformed and one on the end parts directed, inward force.

EP 0 531 748 A1 offenbart eine Vorrichtung für einen Plattenwechsel. Eine in einer Gleiteinrichtung gelagerte Walze ist gegenüber einer Spannvorrichtung in dem Kanal eines Druckwerkzylinders angebracht. Die Mantelfläche der Walze kommt mit der Hinterkante einer Druckplatte in Kontakt, während sich die Walze senkrecht zu dem Druckwerkzylinder bewegt. Da die Walze nur einen linearen Bereich deckt, ist es schwierig, diese Walze für den reibungslosen gleichzeitigen Kontakt mit der Vorderkante und der Hinterkante einer truckplatte einzusetzen.EP 0 531 748 A1 discloses a device for a Plate change. One stored in a sliding device The roller is opposite a tensioning device in the channel Printing unit cylinder attached. The outer surface of the roller comes into contact with the rear edge of a pressure plate, while the roller is perpendicular to the printing cylinder emotional. Since the roller only covers a linear area, it is difficult to use this roller for smooth simultaneous Contact with the leading edge and the trailing edge of one insert truck plate.

US 5,211,112 offenbart eine Vorrichtung zum Aufspannen einer Platte auf einen Plattenzylinder. Diese Vorrichtung umfaßt ein Paar rechter und linker Stützhebel, eine Plattenandrückwalze und ein Plattenandrückpolster mit einem Federelement. Die Plattenandrückwalze zwingt die Platte gegen die Umfangsfläche des Plattenzylinders, wenn diese um den Plattenzylinder gewunden wird. Das Plattenandrückpolster ist auf einer Halterung befestigt, um die freien Enden des Stützhebelpaares zu verbinden, und weist eine elastische Oberfläche zum Andrücken des hinteren Endes der Platte auf.US 5,211,112 discloses a device for clamping a Plate on a plate cylinder. This device includes a pair of right and left support levers, one Plate pressure roller and a plate pressure pad with one Spring element. The plate pressure roller forces the plate against the circumferential surface of the plate cylinder, if this around the Plate cylinder is wound. The plate pressure pad is attached to a bracket to hold the free ends of the To connect the pair of support levers, and has an elastic Surface for pressing the rear end of the plate on.

EP 0 551 166 A1 zeigt eine Plattenwechselvorrichtung für Druckmaschinen. Auf der Umfangsfläche eines Plattenzylinders sind Betätigungselemente einschließlich einer Plattenandrückwalze angeordnet. Durch die Plattenandrückwalze wird die Vorderkante einer Druckplatte zwischen die Greiferflächen einer Plattenvorderkanten-Spannvorrichtung eingeführt, und die Hinterkante der Druckplatte wird zwischen die Greiferflächen einer Plattenhinterkanten-Spannvorrichtung eingeführt. Beim Einspannen der Druckplattenhinterkante zwingt die Plattenandrückwalze nicht beide Kanten der Druckplatte gleichzeitig in die jeweilige Plattenklemmvorrichtung, während der Plattenzylinder sich in einer bestimmten Drehposition befindet. Bei einem EP 0 551 166 A1 shows a plate changing device for Printing machines. On the peripheral surface of a plate cylinder are actuators including one Plate pressure roller arranged. Through the platen pressure roller the front edge of a pressure plate between the Gripper surfaces of a plate leading edge clamping device inserted, and the trailing edge of the pressure plate is between the gripper surfaces of a plate trailing edge clamping device introduced. When clamping the pressure plate trailing edge the platen roller does not force both edges of the Pressure plate simultaneously in the respective Plate clamp while the plate cylinder is in a certain rotational position. At a

EP 0639454 A1 betrifft eine Vorrichtung mit einem zurückziehbaren Haken zum Halten einer Druckplatte auf einem Tragzylinder in einer Rotationsdruckmaschine und eine Rotationsdruckmaschine mit einer derartigen Vorrichtung. Die Druckplatte, die mit einem vorderen Rand auf der äußeren Oberfläche des Tragzylinders gehalten ist, ist im übrigen mittels eines Einhakens einer hinteren Endfalte auf einem Haken gehalten, der bezüglich des Tragzylinders zwischen einer vorderen Endpositions, in welche er einen Vorsprung auf der äußeren Umfangsfläche zum Ermöglichen des Ein- oder Aushakens der hinteren Endfalte bildet und einer zurückbezogenen Position beweglich, in welcher er bezüglich dieser äußeren Umfangsfläche zurückgezogen ist und die Druckplatte ihn auf der äußeren Umfangsfläche in aufgewickeltem Zustand unter Spannung hält. Die Montage und die Demontage einer Druckplatte wird somit erleichtert und die Lücke des Druckens zwischen den Enden der Druckplatte ist auf ein Minimum reduziert. Ferner sind in diesem Dokument Andrückvorrichtungen in Form einer beschichteten Andrückwalze sowie eines schwenkbaren Andrückelementes, welches mittels eines Zylinders verschwenkbar ist vorgesehen.EP 0639454 A1 relates to a device with a retractable hook for holding a printing plate on a support cylinder in a Rotary printing press and a rotary printing press with one such device. The printing plate with a front edge on it the outer surface of the support cylinder is held, by the way a hook of a rear end fold held on a hook that with respect to the support cylinder between a front end position, in which he a protrusion on the outer peripheral surface Allows you to hook or unhook the rear end folds and one retracted position in which it is movable with respect to this outer Peripheral surface is withdrawn and the pressure plate him on the outer Keeps the peripheral surface under tension in the wound state. The Assembly and disassembly of a pressure plate is thus facilitated and the gap of printing between the ends of the printing plate is on Minimum reduced. There are also pressure devices in this document in the form of a coated pressure roller and a swiveling one Pressure element, which is pivotable by means of a cylinder intended.

In Anbetracht des oben beschriebenen Standes der Technik ist es die Aufgabe der vorliegenden Erfindung, ein Verfahren und eine Vorrichtung zum Aufspannen einer Druckplatte vorzusehen, die ein Element umfaßt, das die Plattenhinterkante und die Plattenvorderkante gleichzeitig kontaktiert.In view of the prior art described above, it is the Object of the present invention, a method and an apparatus to be provided for mounting a printing plate which comprises an element which the plate rear edge and the plate front edge contacted at the same time.

Es ist eine weitere Aufgabe der vorliegenden Erfindung, eine gleichförmige Krümmung der Druckplatte zu erzielen, die mit der Krümmung des Plattenzylinders im Plattenspannbereich übereinstimmt.It is another object of the present invention to be uniform To achieve curvature of the pressure plate that matches the curvature of the Plate cylinder in the plate clamping area matches.

Es ist eine zusätzliche Aufgabe der vorliegenden Erfindung, zu verhindern, daß Verunreinigungen in die Plattenspannvorrichtung gelangen. It is an additional object of the present invention to prevent that contaminants get into the plate clamping device.

Gemäß der vorliegenden Erfindung umfaßt eine Vorrichtung zum Aufspannen einer Druckplatte auf einen Druckwerkzylinder die in den Ansprüchen 1 bzw. 15 angegebenen Merkmalen.According to the present invention, an apparatus for Clamping a printing plate on a printing unit cylinder features specified in claims 1 and 15, respectively.

In den folgenden Ausführungsbeispielen der Erfindung wird das sichere Einfügen der jeweiligen Druckplattenkanten in einen Plattenspannmechanismus dargestellt. Da ferner eine Andrückleiste gemäß den Ausführungsbeispielen der Erfindung vorgesehen ist, die einen Plattenspannbereich weitgehend deckt, ist die Oberfläche der Druckplatte entlang der Krümmung des Zylinders glatt; solch ein Merkmal begünstigt den Drehkontakt zwischen der Druckplatte und dem zugehörigen Gummituchzylinder des Druckwerks. Außerdem verhindert eine der Andrückvorrichtung zugeordnete Schutzeinrichtung, daß Verunreinigungen zwischen die Andrückleiste und das Gehäuse der Andrückvorrichtung eindringen.In the following embodiments of the invention, this becomes more secure Insert the respective printing plate edges into one Plate clamping mechanism shown. Since also a pressure bar according to the embodiments of the invention is provided, the one Plate clamping area largely covers, the surface of the printing plate is along the Curvature of the cylinder smooth; favored such a characteristic the rotary contact between the pressure plate and the associated one Blanket cylinder of the printing unit. It also prevents the protective device assigned protective device that Contamination between the pressure bar and the housing penetrate the pressing device.

Gemäß den Ausführungsbeispielen der Erfindung drückt die Andrückvorrichtung die Vorderkante und die Hinterkante der Druckplatte gleichzeitig unter die Spannschiene eines Plattenzylinders. Die Andrückleiste kontaktiert bei ihrem Rückzug in den Plattenzylinder die Oberfläche der Spannschiene.According to the embodiments of the invention, the Pressing device the front edge and the rear edge of the Pressure plate at the same time under the tensioning rail Plate cylinder. The pressure bar contacts at her Retreat into the plate cylinder the surface of the Tensioning rail.

In den Ausführungsbeispielen kann die Schutzeinrichtung eine um die Andrückvorrichtung gewundene und durch ein mit Federkraft beaufschlagtes Spannelement festgehaltene Schutzhülse sein. Die Schutzhülse kann z. B. aus einem gummiartigen Material oder aus Polyurethan, Polyester o. ä. oder aus elastischem Gewebe hergestellt sein. Zum Zwecke des Auswechselns kann die Schutzhülse bewegbar auf der Andrückvorrichtung angebracht sein.In the exemplary embodiments, the protective device can be a wound around the pressing device and with a Clamping element acted upon by spring force Be protective sleeve. The protective sleeve can, for. B. from one rubber-like material or made of polyurethane, polyester or the like or be made of elastic fabric. For the purpose of The protective sleeve can be moved on the Pressure device be attached.

Eine Andrückleiste gemäß den Ausführungsbeispielen der vorliegenden Erfindung kann durch einen Kolben bewegt werden, welcher durch Zuleitung von Druck (z. B. Luft- oder Flüssigkeitsdruckkeitsdruck) in eine in dem Gehäuse der Andrückvorrichtung vorgesehene Druckkammer betätigt wird.A pressure bar according to the embodiments of the present invention can be moved by a piston which by supplying pressure (e.g. air or Liquid pressure pressure) in a in the housing of the Pressure device provided pressure chamber is actuated.

Die vorliegende Erfindung wird in der folgenden Beschreibung bevorzugter Ausführungsbei spiele im Zusammenhang mit den beigefügten, nachstehend erklärten Zeichnungen näher erläutert.The present invention is described in the following description preferred Ausführungsbei games in connection with the attached drawings explained below explained.

Es zeigen:

Fig. 1
eine Seitenansicht eines Ausführungsbeispiels der vorliegenden Erfindung mit einer Vorderkante einer durch eine Spannschiene eingespannten Druckplatte;
Fig. 2
die eingespannte Platte der Fig. 1, welche auf einem Druckwerkzylinder durch dessen Drehung transportiert wird;
Fig. 3
die Spannschiene der Fig. 1 in einer Drehposition gegenüber einer Andrückvorrichtung;
Fig. 4
die Betätigung der Andrückvorrichtung und der Spannschiene der Fig. 3 zum Einspannen der Hinterkante der Druckplatte;
Fig. 5
eine Teilansicht der Andrückvorrichtung der Fig. 4; und
Fig. 6
die Andrückvorrichtung der Fig. 5 mit einer Andrückleiste in aktivierter Position.
Show it:
Fig. 1
a side view of an embodiment of the present invention with a front edge of a pressure plate clamped by a clamping rail;
Fig. 2
the clamped plate of Figure 1, which is transported on a printing unit cylinder by its rotation.
Fig. 3
the tensioning rail of Figure 1 in a rotational position relative to a pressing device.
Fig. 4
the actuation of the pressing device and the clamping rail of Figure 3 for clamping the rear edge of the pressure plate.
Fig. 5
a partial view of the pressing device of Fig. 4; and
Fig. 6
5 with a pressure bar in the activated position.

Fig. 1 zeigt ein Druckwerk mit einem Plattenzylinder 1 und einem Gummituchzylinder 2. Auf der Umfangsfläche des Plattenzylinders 1 ist eine Druckplatte 6 anzubringen.Fig. 1 shows a printing unit with a plate cylinder 1 and a blanket cylinder 2. On the peripheral surface of the Plate cylinder 1, a pressure plate 6 is to be attached.

Dem Plattenzylinder 1 sind eine erste Auftragwalze 3, eine zweite Auftragwalze 4 und eine dritte Auftragwalze 5 zugeordnet, um Farbe auf seine Oberfläche zu übertragen. Der Plattenzylinder 1 überträgt ein Druckbild auf den Gummituchzylinder 2 und dieser überträgt das Druckbild auf eine Materialbahn.The plate cylinder 1 are a first applicator roller 3, one second applicator roller 4 and a third applicator roller 5 assigned to transfer color to its surface. Of the Plate cylinder 1 transfers a print image to the Blanket cylinder 2 and this transfers the print image a web of material.

Die auf dem Plattenzylinder angebrachte Druckplatte 6 hat eine Vorderkante 7 und eine Hinterkante 8 (wie in Fig. 2 gezeigt), welche mittels einer Spannschiene 11 eingespannt werden. Die Spannschiene 11 ist in einer als offener Kanal in dem Plattenzylinder 1 dargestellten Öffnung, worin die Plattenvorder- und -hinterkante aufgenommen werden, angebracht und besteht aus einem länglichen Körper 12, der mit einer Ausgleichsmasse 13 verbunden ist. Die Ausgleichsmasse 13 ist durch Federn 17 beaufschlagt (z. B. Spiralfedern o. ä.) Ein Halteelement, z. B. eine Haltefeder 14, ist mittels eines Befestigungselements 15 auf der Spannschiene 11 angebracht.The pressure plate 6 attached to the plate cylinder has a leading edge 7 and a trailing edge 8 (as in FIG. 2 shown), which is clamped by means of a clamping rail 11 become. The tensioning rail 11 is in an open channel in the plate cylinder 1 shown opening, wherein the The front and rear edge of the panel are recorded, attached and consists of an elongated body 12, the is connected to a leveling mass 13. The Leveling compound 13 is acted upon by springs 17 (e.g. Coil springs or the like.) A holding element, for. Legs Retaining spring 14 is on by means of a fastener 15 the tensioning rail 11 attached.

Gegenüber der Spannschiene 11, deren Außenfläche 16 mit dem Plattenzylinderumfang übereinstimmt, ist eine Andrückvorrichtung 9 vorgesehen. Die Andrückvorrichtung 9 umfaßt eine Andrückleiste 10, die in einer Halterung aufgenommen ist, welche um eine Drehachse 18 drehbar angebracht ist. Die Drehachse 18 ist wiederum mit einer Halterung 19 verbunden, die unter der auf den Plattenzylinder 1 aufzuspannenden Platte 6 angeordnet ist.Opposite the tensioning rail 11, the outer surface 16 with the Plate cylinder circumference is one Pressing device 9 is provided. The pressing device 9 comprises a pressure bar 10, which is in a holder is included, which is rotatable about an axis of rotation 18 is appropriate. The axis of rotation 18 is in turn with a Bracket 19 connected under the on the Plate cylinder 1 plate 6 is arranged.

In der in Fig. 1 gezeigten Drehposition ist die Spannschiene 11 durch Flüssigkeitsdruck oder Luftdruck anfänglich aus dem Plattenzylinder 1 heraus nach außen gerichtet, die Andrückvorrichtung wird in eine offene Position geschwenkt und die Vorderkante 7 einer Platte wird durch ein Außenende 25 (siehe Fig. 2) des Plattenzylinders 1 und die Haltefeder 14 gebogen. Nach dem Einfügen der Plattenvorderkante 7 wird die Spannschiene 11 in ihre zurückgezogene Position in den Plattenzylinder 1 zurückbewegt und die Andrückvorrichtung 9 wird in eine geschlossene Position zurückgeschwenkt, wie in Fig. 1 gezeigt. Beim Einspannen der Plattenvorderkante 7 in der gezeigten Drehposition des Plattenzylinders 1 bleibt die Andrückleiste 10 in der Andrückvorrichtung 9 in einer zurückgezogenen, geschlossenen Position, wie in Fig. 1 gezeigt. Der Plattenzylinder 1 wird dann gedreht und somit die Platte um dessen Umfang gewunden. In the rotational position shown in Fig. 1 is the Clamping rail 11 by liquid pressure or air pressure initially out of the plate cylinder 1 directed, the pressing device is in an open Position swiveled and the front edge 7 of a plate through an outer end 25 (see FIG. 2) of the plate cylinder 1 and the retaining spring 14 bent. After inserting the Plate leading edge 7 is the tensioning rail 11 in their withdrawn position in the plate cylinder 1 moved back and the pressing device 9 is closed Position pivoted back as shown in Fig. 1. At the Clamping the plate leading edge 7 in the shown The rotational position of the plate cylinder 1 remains Pressure bar 10 in the pressure device 9 in one retracted, closed position as in FIG. 1 shown. The plate cylinder 1 is then rotated and thus the plate wound around its circumference.

Fig. 2 zeigt die eingespannte, teilweise um den Plattenzylinder 1 gewundene Platte 6. Nachdem der Plattenzylinder 1 sich jeweils vorbei an der ersten, zweiten und dritten Auftragwalze 3, 4 und 5 gedreht hat, erstreckt sich die Spannschiene 11 automatisch aus der Umfangsfläche des Plattenzylinders heraus (z. B. durch Flüssigkeitsdruck und/oder Zentrifugalkraft), während sich der Plattenzylinder noch dreht. Die Plattenvorderkante 7 bleibt auf dem äußeren Ende 25 des Plattenzylinders 1 gebogen, nachdem sich die Spannschiene 11 in dem offenen Kanal 24 des Plattenzylinders 1 seitlich bewegt hat. Die Andrückvorrichtung 9 behält ihre nach unten geneigte Position, so daß die Platte 6 einen Bereich zwischen der Umfangsfläche des Plattenzylinders 1 und der Oberfläche der Andrückleiste 10, die zurückgezogen in ihrer geschlossenen, inaktiven Position verbleibt, passieren kann. Somit windet eine weitere Drehbewegung des Plattenzylinders 1 die Platte 6 um den Plattenzylinder, bis die Hinterkante 8 der Platte eine Position gegenüber der Spannschiene 11 auf dem Plattenzylinder erreicht hat. Wie in Fig. 2 gezeigt, umfaßt die Spannschiene 11 ferner eine obere Aussparung 20 und eine untere Aussparung 21, worin die Haltefeder 14 angebracht ist. Ferner weist die Spannschiene 11 an deren einem Endteil 22 eine Anschlagfläche 23 zur Begrenzung der Bewegung der Spannschiene 11 innerhalb des offenen Kanals 24 des Plattenzylinders 1 auf.Fig. 2 shows the clamped, partially around the Plate cylinder 1 wound plate 6. After the Plate cylinder 1 each past the first, second and third applicator roller 3, 4 and 5 has rotated the tensioning rail 11 automatically emerges from the peripheral surface the plate cylinder (e.g. due to liquid pressure and / or centrifugal force) while the plate cylinder still spins. The plate leading edge 7 remains on the outer End 25 of the plate cylinder 1 bent after the Clamping rail 11 in the open channel 24 of the Plate cylinder 1 has moved laterally. The Press device 9 keeps its downward inclined Position so that the plate 6 has an area between the Circumferential surface of the plate cylinder 1 and the surface of the Pressure bar 10, which is retracted in its closed, remains inactive position, can happen. Thus winds a further rotation of the plate cylinder 1, the plate 6 around the plate cylinder until the rear edge 8 of the plate is one Position opposite the tensioning rail 11 on the Plate cylinder has reached. As shown in Figure 2 the tensioning rail 11 also has an upper recess 20 and a lower recess 21, in which the retaining spring 14 is attached. Furthermore, the tensioning rail 11 has one end part 22 thereof a stop surface 23 to limit the movement of the Tensioning rail 11 within the open channel 24 of the Plate cylinder 1 on.

Fig. 3 zeigt die Spannschiene 11 des Plattenzylinders 1 in seiner Drehposition gegenüber der Andrückvorrichtung 9. In der Drehposition der Fig. 3 hat der Plattenzylinder 1 eine Umdrehung beendet. Die Spannschiene 11 ist noch in ihrer geöffneten Position. Die Hinterkante 8 der Platte 6 ist nun in die Haltefeder 14 der Spannschiene 11 des Plattenzylinders 1 hineingeschoben worden und die Vorderkante 7 der Platte 6 bleibt über dem Außenende 25 des Plattenzylinders gebogen. Die Plattenhinterkante 8 wird nun zwischen der Außenfläche 16 der Spannschiene 11 und der Oberfläche der Andrückleiste 10 gehalten. Bei einer Drehbewegung des Plattenzylinders 1 wird die Hinterkante 8 vorläufig in die Spannschiene 11 gedrückt, wenn dessen Außenende 25 die obere Ecke 35 (siehe Fig. 5) der Andrückleiste 10 passiert. Gemäß den Ausführungsbeispielen kann ein Spalt von ca. 0,6 cm (0.236 inch) zwischen dem Plattenzylinder 1 und der Andrückleiste 10 vorgesehen sein, so daß eine Abbiegung in der vorläufig angedrückten Hinterkante von ca. 0,64 cm (0.25 inch) durch den Schlitz schlüpfen kann. Somit genügt bei diesem vorläufigen Andrücken ein relativ enger Spalt zwischen der Andrückleiste 10 und der Spannschiene 11. Jedoch dem Fachmann wird bewußt sein, daß solche Ausmaße nur als Beispiel dienen und diese und/oder andere entsprechende Ausmaße erhöht oder vermindert werden können, um der gewünschten Ausführung zu dienen.Fig. 3 shows the clamping rail 11 of the plate cylinder 1 in its rotational position in relation to the pressing device 9. 3, the plate cylinder 1 has a Revolution finished. The tensioning rail 11 is still in her open position. The rear edge 8 of the plate 6 is now in the retaining spring 14 of the tensioning rail 11 of the Plate cylinder 1 has been inserted and the Front edge 7 of the plate 6 remains over the outer end 25 of the Plate cylinder bent. The plate trailing edge 8 is now between the outer surface 16 of the tensioning rail 11 and the Surface of the pressure bar 10 held. At a Rotational movement of the plate cylinder 1 becomes the rear edge 8 provisionally pressed into the tensioning rail 11, if that Outer end 25, the upper corner 35 (see Fig. 5) of the Pressure bar 10 happens. According to the embodiments there can be a gap of approx.0.6 cm (0.236 inch) between the Plate cylinder 1 and the pressure bar 10 may be provided, so that a turn in the provisionally pressed 0.64 cm (0.25 inch) through the slot can hatch. Thus, with this preliminary pressing, it is sufficient a relatively narrow gap between the pressure bar 10 and the Clamping rail 11. However, the expert will be aware that such dimensions serve only as an example and this and / or other corresponding dimensions are increased or decreased to serve the desired execution.

Fig. 4 zeigt die Andrückvorrichtung 9 und die Spannschiene 11 in ihrem aktivierten Zustand, um die Vorder- und Hinterkante der auf den Plattenzylinder aufzuspannenden Platte 6 zu befestigen. In Fig. 4 ist der Plattenzylinder 1 angehalten und die Andrückleiste 10 aktiviert, z. B. mittels Flüssigkeitsdruck, um die Plattenhinterkante 8 nach oben gegen die Außenfläche 16 der Spannschiene 11 zu drücken. Die Spannschiene 11 wird mittels der auf die Ausgleichsmasse 13 wirkenden Spiralfedern 17 in den offenen Kanal 24 des Plattenzylinders zurückgezogen. Während sich die Spannschiene 11 in den Plattenzylinderkanal zurückzieht, drückt die Andrückleiste 10 noch gegen die Plattenhinterkante 8, um ein reibungsloses Aufspannen der Platte auf die Umfangsfläche des Plattenzylinders 1 zu gewährleisten. 4 shows the pressing device 9 and the tensioning rail 11 in their activated state, around the front and rear edge the plate 6 to be clamped on the plate cylinder fasten. In Fig. 4, the plate cylinder 1 is stopped and the pressure bar 10 activated, for. B. means Fluid pressure to the plate trailing edge 8 upwards to press against the outer surface 16 of the tensioning rail 11. The Clamping rail 11 is by means of the balancing mass 13th acting coil springs 17 in the open channel 24 of the Plate cylinder withdrawn. While the Retracts the tensioning rail 11 into the plate cylinder channel, presses the pressure bar 10 against the Plate trailing edge 8 to ensure smooth clamping of the Plate to the peripheral surface of the plate cylinder 1 guarantee.

Fig. 5 zeigt die Andrückvorrichtung 9 im Detail in ihrer deaktivierten, geschlossenen Position. In diesem Ausführungsbeispiel ist die Andrückleiste 10 in einer Aussparung 31 eines Gehäuses 26 aufgenommen. Das Gehäuse 26 umfaßt ferner eine federbeaufschlagte Spannplatte 30. Mittels der Spannplatte 30 wird eine Schutzvorrichtung - z. B. in Form einer Schutzhülse 27, die aus einem beliebigen flexiblen, elastischen oder steifen Material hergestellt sein kann, straff um die Andrückvorrichtung angebracht und diese somit umhüllt. Das Gehäuse 26 umfaßt eine Bohrung 33 zum Zuleiten von Flüssigkeitsdruck (z. B. hydraulischen oder pneumatischen Druck), um einen Kolben 28 zu bewegen. Der Kolben 28 ist mit einer Dichtung 32, z. B. einem O-Ring o. ä. versehen. Wie in Fig. 5 ersichtlich, kontaktiert das linke Ende des Kolbens 28 die Andrückleiste 10, und das rechte Ende des Kolbens 28 befindet sich gegenüber einer Druckkammer 34 (siehe Fig. 6).Fig. 5 shows the pressing device 9 in detail in its deactivated, closed position. In this The embodiment is the pressure bar 10 in one Recess 31 of a housing 26 added. The housing 26 further comprises a spring-loaded clamping plate 30 the clamping plate 30 is a protective device - z. B. in Form of a protective sleeve 27 made of any flexible, elastic or rigid material can, tightly attached to the pressure device and this thus enveloped. The housing 26 includes a bore 33 for Supply of fluid pressure (e.g. hydraulic or pneumatic pressure) to move a piston 28. Of the Piston 28 is provided with a seal 32, e.g. B. an O-ring or the like. Mistake. As can be seen in Fig. 5, the left contacts End of the piston 28, the pressure bar 10, and the right end of the piston 28 is located opposite a pressure chamber 34 (see Fig. 6).

In Fig. 6 ist der Kolben 28 in einer aktivierten Position gezeigt. Durch die Bohrung 33 wird Flüssigkeitsdruck zur Kammer 34 geleitet. Somit bewegt sich der Kolben 28 seitlich, wodurch die Andrückleiste 10 sich aus der Aussparung 31 bewegt und die Plattenhinterkante 8 kontaktiert. Bei der seitlichen Bewegung des Kolbens 28 und der Andrückleiste 10 bewegt sich auch die Schutzhülse 27. Die Schützhülse 27 bewirkt, daß sich die Feder 29 der federbeaufschlagten Spannplatte 30 zusammenzieht und die Spannplatte 30 entsprechend in die seitliche Richtung bewegt wird. Somit bleibt die Schutzhülse 26 während der Bewegung der Andrückleiste 10 nach außen straff um das Gehäuse 26 gehüllt. Die Schutzhülse 27 hält alle Verunreinigungen fern, die zwischen die Andrückleiste 10 und das Gehäuse 26 der Andrückleiste kommen könnte. Im besonderen sind die Kanten der Andrückleiste 10 und die Kanten der Aussparung 31 geschützt. Wegen der federbeaufschlagten Spannplatte 30 bleibt die Schutzhülse 27 immer - auch während der Bewegung der Andrückleiste 10 - in einem gestrafften Zustand und dichtet somit die Andrückleiste 10 gegen irgendwelche Verunreinigungen, z. B. Farbe, Papierstaub o. ä. ab. 6, the piston 28 is in an activated position shown. Through the bore 33 fluid pressure Chamber 34 directed. Thus, the piston 28 moves laterally, whereby the pressure bar 10 emerges from the recess 31 moved and contacted the plate trailing edge 8. In the lateral movement of the piston 28 and the pressure bar 10 the protective sleeve 27 also moves. The protective sleeve 27 causes the spring 29 of the spring-loaded Clamping plate 30 contracts and the clamping plate 30 is moved accordingly in the lateral direction. Consequently the protective sleeve 26 remains during the movement of the Pressure bar 10 wrapped tightly around the outside of the housing 26. The protective sleeve 27 keeps all contaminants away between the pressure bar 10 and the housing 26 of the Pressure bar could come. The edges in particular the pressure bar 10 and the edges of the recess 31 protected. Because of the spring-loaded clamping plate 30 the protective sleeve 27 always remains - even during the movement the pressure bar 10 - in a streamlined condition and thus seals the pressure bar 10 against any Impurities, e.g. B. paint, paper dust or the like.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

11
Plattenzylinder / DruckwerkzylinderPlate cylinder / printing unit cylinder
22nd
GummituchzylinderBlanket cylinder
33rd
erste Auftragwalzefirst application roller
44th
zweite Auftragwalzesecond application roller
55
dritte Auftragwalzethird application roller
66
Druckplatteprinting plate
77
Vorderkante der DruckplatteFront edge of the pressure plate
88th
Hinterkante der DruckplatteTrailing edge of the pressure plate
99
AndrückvorrichtungPressing device
1010th
AndrückleistePressure bar
1111
SpannschieneTensioning rail
1212th
SpannschienenkörperTensioning rail body
1313
AusgleichsmasseLeveling compound
1414
Halteelement, Haltefeder der SpannschieneHolding element, spring of the tensioning rail
1515
BefestigungselementFastener
1616
Außenfläche der SpannschieneOuter surface of the tensioning rail
1717th
SpiralfedernCoil springs
1818th
DrehachseAxis of rotation
1919th
Halterungbracket
2020th
obere Aussparung der Spannschieneupper recess of the tensioning rail
2121
untere Aussparung der Spannschienelower recess of the tensioning rail
2222
Endteil der SpannschieneEnd part of the tensioning rail
2323
Anschlagfläche der SpannschieneStop surface of the tensioning rail
2424th
Öffnung des PlattenzylindersOpening the plate cylinder
2525th
Außenende des PlattenzylindersOuter end of the plate cylinder
2626
Gehäuse der AndrückleistePressure bar housing
2727
SchutzhülseProtective sleeve
2828
Kolbenpiston
2929
Feder der SpannplatteSpring of the clamping plate
3030th
SpannplatteClamping plate
3131
Aussparung des GehäusesRecess in the housing
3232
Dichtung des KolbensSeal the piston
3333
Bohrungdrilling
3434
DruckkammerPressure chamber
3535
obere Ecke der Andrückleisteupper corner of the pressure bar

Claims (20)

  1. Device for the tension-mounting of a printing plate on a printing-unit cylinder (1) which has an orifice (24) in the tensioning region, with a tension rail (11) which is mounted movably in the orifice (24) of the printing-unit cylinder (1) and has a holding element (14) for the tension-gripping of at least one edge (7, 8) of the printing plate (6), the printing-unit cylinder (1) being assigned a press-down device (9) comprising a press-down batten which covers essentially the tensioning region of the printing-unit cylinder (1), characterized in that the press-down device (9) comprises a press-down batten (10) movable in a housing (26) and the press-down device (9) is surrounded by a protective sleeve (27) encasing the latter for sealing off against impurities when the press-down batten (10) is activated and deactivated.
  2. Device according to Claim 1, characterized in that the press-down device (9) forces the leading edge (7) and the trailing edge (8) of a printing plate (6) simultaneously into the tension rail (11) of the plate cylinder (1).
  3. Device according to Claim 1, characterized in that the tension rail (11) can be retracted into the orifice (24) of the plate cylinder (1), and in that, furthermore, the tension rail (11) has a face (16), with which the press-down batten (10) comes into contact during the retraction of the tension rail (11) into the plate cylinder (1).
  4. Device according to Claim 1, characterized in that the protective sleeve (27) is produced from an elastic material.
  5. Device according to Claim 1, characterized in that the protective sleeve (27) is produced from rubber-like material.
  6. Device according to Claim 1, characterized in that the protective sleeve (27) is produced from polyester or polyurethane.
  7. Device according to Claim 1, characterized in that the protective sleeve (27) is produced from elastic fabric.
  8. Device according to Claim 1, which, furthermore, comprises a tension plate (30), loaded with spring force, in order to impart tension to the protective sleeve (27).
  9. Device according to Claim 1, characterized in that the press-down batten (10) is mounted movably in a recess (31) of the housing (26).
  10. Device according to Claim 1, characterized in that the press-down device (9) comprises a housing (26) with a pressure chamber (34).
  11. Device according to Claim 10, characterized in that the pressure chamber (34) comprises a movably mounted piston (28).
  12. Device according to Claim 10, characterized in that the housing (26) has a recess (31), in which the piston (28) moves the press-down batten (10).
  13. Device according to Claim 10, characterized in that hydraulic pressure is applied to the press-down batten (10) by means of the pressure chamber (34).
  14. Device according to Claim 10, characterized in that pneumatic pressure is applied to the press-down batten (10) by means of the pressure chamber (34).
  15. Device for the tension-mounting of a printing plate on to a printing-unit cylinder (1) which has, in the tensioning region, an orifice (24) for receiving a leading edge (7) and a trailing edge (8) of the printing plate (6), with a tension rail (11) mounted movably in the orifice (24) of the printing-unit cylinder (1) and intended for the tension-gripping of the leading and trailing edges of the printing plate (6), and with a press-down device (9), characterized in that the press-down device (9) is provided with a protective sleeve (27) encasing it and intended for sealing off against impurities and has a movable press-down batten (10) for simultaneously coming into contact with the leading edge (7) and the trailing edge (8) of the printing plate (6) during the tension-gripping of the plate trailing edge (8) in the orifice (24).
  16. Device according to Claim 15, characterized in that the press-down device (9), furthermore, comprises a housing (26) with a movable piston (28) mounted in the latter and intended for coming into contact with the press-down batten (10), the activated piston (28) moving the press-down batten (10) out of the housing (26), and the protective sleeve (27) encasing the press-down device (9) when the piston (28) is being deactivated and activated.
  17. Device according to Claim 16, which, furthermore, has a tension plate (30), loaded with spring force, in order to impart tension to the protective sleeve (27).
  18. Device according to Claim 17, characterized in that the protective sleeve (27) is produced from an elastic material.
  19. Method for the tension-mounting of a printing plate on to a printing-unit cylinder, having the following method steps:
    the insertion of the leading edge (7) of a printing plate (6) into a tensioning region formed as an orifice (24) in a printing-unit cylinder (1),
    the tension-gripping of the leading edge (7) of the printing plate (6) in a tension rail (11) which is mounted movably in the orifice (24) of the printing-unit cylinder (1),
    the rotation of the printing-unit cylinder (1) for the complete reception of the printing plate (6) on its circumference, until the edges (7, 8) of the printing plate (6) are located opposite a press-down device (9),
    the first pressing of the trailing edge (8) of the printing plate (6) into the tension rail (11) by the extending of a press-down batten (20) out of the press-down device (9) surrounded by a protective sleeve (27), and
    the coming of the press-down batten (10) into joint contact with the leading edge (7) and trailing edge (8) of the printing plate (6), which is initiated during the further extending of the press-down batten (10) which forces the leading and trailing edges (7, 8) in the direction of the orifice (24).
  20. Method according to Claim 19, having the following further method steps:
    the automatic moving of the tension rail (11) out of the printing-unit cylinder (1) while the latter is in the position after the step of the tension-gripping of the leading edge (7) of the printing plate (6), but before the step of the first pressing in of the trailing edge (8).
EP96105769A 1995-04-26 1996-04-12 Process and device for attaching a printing plate to a cylinder Expired - Lifetime EP0739728B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42949195A 1995-04-26 1995-04-26
US429491 1995-04-26

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EP0739728A3 EP0739728A3 (en) 1997-04-16
EP0739728B1 true EP0739728B1 (en) 1999-02-10

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US (1) US5718175A (en)
EP (1) EP0739728B1 (en)
JP (1) JP3030602U (en)
AT (1) ATE176627T1 (en)
DE (2) DE19614465A1 (en)

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Publication number Publication date
DE19614465A1 (en) 1996-11-14
EP0739728A3 (en) 1997-04-16
US5718175A (en) 1998-02-17
DE59601285D1 (en) 1999-03-25
JP3030602U (en) 1996-11-01
ATE176627T1 (en) 1999-02-15
EP0739728A2 (en) 1996-10-30

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