EP0713770B1 - Device for mounting a flexible printing plate - Google Patents

Device for mounting a flexible printing plate Download PDF

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Publication number
EP0713770B1
EP0713770B1 EP95115212A EP95115212A EP0713770B1 EP 0713770 B1 EP0713770 B1 EP 0713770B1 EP 95115212 A EP95115212 A EP 95115212A EP 95115212 A EP95115212 A EP 95115212A EP 0713770 B1 EP0713770 B1 EP 0713770B1
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EP
European Patent Office
Prior art keywords
leaf
clamping element
tubular support
cylinder
printing form
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
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EP95115212A
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German (de)
French (fr)
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EP0713770A1 (en
Inventor
Jacques Métrope
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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Publication of EP0713770A1 publication Critical patent/EP0713770A1/en
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    • 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
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices 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
    • B41F27/1243—Devices 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 pivotal or swivelling motion, e.g. by means of a rocking lever

Definitions

  • the invention relates to a device for Attach a flexible printing form to the Printing form cylinder of a printing machine with at least an axially extending slot in which at least one leaf-shaped element, which with a Rounding completes and a bend a flexible Printing form is fixed, stored.
  • each sheet Element is a clamping element, which in one each clamping element deforming actuator receiving tubular support is received.
  • the device can deform the clamping elements Actuator as a pressurizable medium Membrane body are executed.
  • the actuator is a variant mechanical actuators such as one Adjusting shaft with a flattening on the circumference.
  • the tubular support that receives this in one Axial bore of the printing form cylinder can be rotated arranged.
  • the tubular support also includes one of the number of clamping elements to be accommodated corresponding number of pairs of recesses that in the axial direction parallel to the axis of rotation extend the printing form cylinder.
  • the recesses are opposite each other in the tubular Carrier arranged.
  • the Opposite the tension channel is a with this aligned tension channel extension.
  • Each leaf-shaped clamping element has an abutment, which engages in the tension channel extension. In condition "Tensioning" lies each leaf-shaped tensioning element both at a limitation of the span extension as well on a boundary of the upper, the tension channel assigned recess.
  • Figure 1 is a schematic perspective View of a printing form cylinder in the "clamp" state.
  • Figure 2 is a schematic cross section of the tubular supports in the "clamp" state.
  • Figure 3 is a schematic perspective View of a printing form cylinder in the state "Release of printing form”.
  • Figure 4 is a schematic cross section of the tubular support with membrane acted upon Condition "approval of printing form”.
  • Figure 5 is a schematic cross section of the tubular support in the axial bore in the Printing form cylinder with released rear Printing form edge and tensioned leading edge.
  • Figure 6 is a schematic cross section of one tubular support twisted in the removal position, so that each leaf-shaped clamping element is radial is removable.
  • FIGS 7, 8 and 9 represent different ones Embodiments of clamping elements, which have different elastic properties.
  • FIG. 1 shows a printing form cylinder 1 whose peripheral surface rests on a printing form 4, the Front and rear edge 5,6 of a tensioning channel 7 be included.
  • the printing form cylinder 1 rotates an axis of rotation 2 in the direction of arrow 3.
  • the Printing form cylinder 1 has an axial bore, in which stores a tubular support that runs along an axis 8 extends across the width of the cylinder.
  • the tensioning channel 7, which of the parallel here Walls 9, 10 is limited, leads into the axial bore, which receives the tubular support 11.
  • opposite recesses 12 executed are in the leaf-shaped clamping elements 13 such as Intervene example of leaf springs.
  • the leaf-shaped Clamping elements 13 have one at their lower end barbs formed by bending the lower edge 15 and at its upper end the printing form exciting hook 14 on.
  • the between the hook 14 and the barb 15 of each leaf-shaped tensioning element lying section is opposite one Actuator 17.
  • This can, for example, as a pressurizable membrane 17 or as a mechanical means such as a rotatable one actuator shaft flattened on one side. This actuator is advantageous remotely controllable.
  • the leading edge is 5th the printing form 4 in the clamping channel 7 against one of its Side walls 9 hung in.
  • the angled rear edge 6 of the printing form 4 is from the hook 14 of the leaf-shaped clamping element is gripped.
  • this is Actuator, here a membrane 17, relieved; the Intrinsic stiffness of the leaf-shaped clamping element 13 pulls the trailing edge 6 of the flexible printing form 4 in Direction to the inside of the tensioning channel 7 such that the pressure under which the printing plate to be attached 4 stands in the tangential direction to the cylinder surface 1 remains.
  • the tensioning channel 7 has one Span channel extension 16 on.
  • the recesses 12 of the tubular support 11 face each other and are from each leaf-shaped clamping element 13th permeated.
  • the leaf-shaped clamping element 13 is with its lower barb 15 in the tension channel extension 16 fixed and applied to the above its curvature Edge of the upper recess 12 in the tubular carrier 11.
  • the actuator used here is relieved of pressure so that the clamping force by the Intrinsic stiffness of the leaf-shaped clamping element 13 upset and maintained.
  • Figure 5 shows that from the surface of the Printing form cylinder 1 protruding rear end 6 of Printing form 4. In this condition, this is here shown deformable membrane-shaped Actuator 17 relieved of pressure. This jams the Hook 14 of the clamping element 13 because of Intrinsic stiffness of the leaf-shaped clamping element 13 the front edge 5 of the printing form 4 against the side wall 9 of the tensioning channel 7.
  • the rotation of the Printing cylinder 1 clockwise can Printing form 4 slowly from the surface of the Printing form cylinder 1 removed and in an automatic or semi-automatic plate changing device be introduced. During this process, the Front edge 5 of the printing plate 4 permanently clamped there the sheet-shaped clamping element 13 no deformation is exposed and through its barb 15 in Tension channel extension 17 remains fixed.
  • FIGS 7, 8 and 9 represent different possible ones Implementation standards of clamping elements.
  • clamping elements 13 which side by side in the axial direction in one of their number corresponding number of recesses 12 introduced can also be continuous leaf-shaped Provide clamping elements 20 or 21. These are both with a hook-shaped end 14 for fixing the Trailing edge 6 of a printing form 4 as well as with a Barb 15 provided. You can use both without any breakouts in the axial direction, depending according to the required spring or clamping characteristics. It is obvious that through the choice of materials also influence the spring characteristics can be taken.
  • the forces to be exerted depend on the used clamping elements. It is possible, except a pressurized membrane also one swiveling control shaft with a one-sided Use flattening to deform the To effect clamping elements 13, 20 and 21.
  • each Clamping element from the actuator elastic with the The flexible printing form is deformed during the target Normal operation of the machine on the printing form cylinder and that both the opening and the Unclamping the flexible printing form by releasing it each clamping element is reached, making it his The original shape and inherent rigidity are recovered.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Electroluminescent Light Sources (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Befestigen einer biegsamen Druckform auf dem Druckformzylinder einer Druckmaschine mit mindestens einem in Achsrichtung verlaufenden Schlitz, in dem mindestens ein blattförmiges Element,welches mit einer Rundung abschließt und eine Abkantung einer biegsamen Druckform fixiert, gelagert ist.The invention relates to a device for Attach a flexible printing form to the Printing form cylinder of a printing machine with at least an axially extending slot in which at least one leaf-shaped element, which with a Rounding completes and a bend a flexible Printing form is fixed, stored.

Aus dem Dokument EP-A-0585625 ist schon eine Befestigungsvorrichtung einer biegsamen Druckplatte bekannt. Beide Enden dieser Druckplatte werden zwischen einer Seitenwand eines Schlitzes und einem verlängerten Schenkel einer Blattfeder fixiert. Die Blattfeder wird durch eine U-förmige Formgebung im Schlitz des Druckzylinders gehalten und weist im oberen Bereich des verlängerten Schenkels eine grubenförmige Vertiefung auf. Beim Einführen der Druckplattenabkantung dringt ein Relief auf der Abkantung der Platte in die unterhalb der Abrundung des verlängerten Schenkels gelegene Vertiefung ein. Außer einer reibschlüssigen Fixierung der Druckplatte folgt daraus also eine formschlüssige Verbindung einer Druckplattenabkantung mit der Blattfederanordnung.One is already known from document EP-A-0585625 Fastening device of a flexible pressure plate known. Both ends of this pressure plate are between a side wall of a slot and an elongated one Leg of a leaf spring fixed. The leaf spring will through a U-shaped shape in the slot of the Printing cylinder held and points in the upper area of the extended leg a pit-shaped depression on. Penetrates when inserting the pressure plate a relief on the edge of the plate in the below the rounding of the elongated leg located depression. Except for a frictional one Fixation of the printing plate follows from this positive connection of a pressure plate bend with the leaf spring arrangement.

Ausgehend vom obigen Stand der Technik ist es die Aufgabe der Erfindung, auswechselbare Spannelemente zur Befestigung einer Druckform mit hoher Zuverläßigkeit fernsteuerbar zu betätigen.Based on the above prior art, it is the Object of the invention, interchangeable clamping elements for Attachment of a printing form with high reliability to be operated by remote control.

Dieses Ziel wird mit einer erfindungsgemäßen Vorrichtung dadurch erreicht, daß jedes blattförmige Element ein Spannelement ist, welches in einem ein jedes Spannelement verformenden Betätigungsorgan aufnehmenden röhrenförmigen Träger aufgenommen ist.This goal is achieved with a Device achieved in that each sheet Element is a clamping element, which in one each clamping element deforming actuator receiving tubular support is received.

Mit Hilfe dieser vorgeschlagenen Lösung ist es möglich, die eine Druckform fixierenden Spannelemente zu verformen, wobei die Fixierung der Druckform während des normalen Maschinenbetriebes durch die Eigensteifigkeit jedes elastisch verformbaren Spannelementes sichergestellt ist. Sowohl das Auf-als auch das Ausspannen einer biegsamen Druckform auf dem Druckformzylinder erfolgt durch elastische Verformung jedes Spannelementes mit Hilfe eines fernsteuerbaren Betätigungsorgans.Jedes Spannelement, das den röhrenförmigen Träger durchdringt, kann nach einer einfachen Entsicherungsbewegung aus diesem radial entnommen und auf einfache Weise durch ein anderes Spannelement ersetzt werden.With the help of this proposed solution it is possible to the clamping elements that fix a printing form deform, the fixation of the printing form during of normal machine operation by the Intrinsic stiffness of any elastically deformable Clamping element is ensured. Both the up and down also unclamping a flexible printing form on the Printing form cylinder is made by elastic deformation each clamping element with the help of a remotely controllable Actuator.Every clamping element that the penetrates tubular carrier, can after a simple unlocking movement from this radial taken and easily by another Clamping element to be replaced.

Nach einer erfindungsgemäßen Ausführungsvariante der Vorrichtung kann das die Spannelemente verformende Betätigungsorgan als druckmittelbeaufschlagbarer Membrankörper ausgeführt werden. Nach einer anderen Ausführungsvariante ist das Betätigungsorgan ein mechanisches Stellmittel wie zum Beispiel eine Stellwelle mit einer Abflachung am Umfang. Um die Austauschbarkeit jedes Spannelementes zu erleichtern, ist der diese aufnehmende röhrenförmige Träger in einer Axialbohrung des Druckformzylinders verdrehbar angeordnet. Der röhrenförmige Träger umfaßt außerdem eine der Anzahl der aufzunehmenden Spannelemente entsprechende Anzahl von Paaren von Ausnehmungen, die sich in axialer Richtung parallel zur Rotationsachse des Druckformzylinders erstrecken. Die Ausnehmungen sind einander gegenüberliegend in dem röhrenförmigen Träger angeordnet.According to an embodiment of the invention The device can deform the clamping elements Actuator as a pressurizable medium Membrane body are executed. Another one The actuator is a variant mechanical actuators such as one Adjusting shaft with a flattening on the circumference. To the Facilitate interchangeability of each clamping element, is the tubular support that receives this in one Axial bore of the printing form cylinder can be rotated arranged. The tubular support also includes one of the number of clamping elements to be accommodated corresponding number of pairs of recesses that in the axial direction parallel to the axis of rotation extend the printing form cylinder. The recesses are opposite each other in the tubular Carrier arranged.

Der durch den Schlitz des Druckformzylinders definierte Spannkanal, in welchen die Abkantungen der Druckform hineinragen, ist durch die Seitenwände des Schlitzes begrenzt und mündet in die den röhrenförmigen Träger aufnehmende Axialbohrung des Druckformzylinders. Dem Spannkanal gegenüberliegend befindet sich ein mit diesem fluchtender Spannkanalfortsatz. Jedes blattförmige Spannelement weist ein Widerlager auf, welches in den Spannkanalfortsatz eingreift. Im Zustand "Spannen" liegt jedes blattförmige Spannelement sowohl an einer Begrenzung des Spannkanalfortsatzes wie auch an einer Begrenzung der oberen, dem Spannkanal zugeordneten Ausnehmung.The one defined by the slot of the printing form cylinder Clamping channel in which the folds of the printing form protrude through the side walls of the slot delimits and opens into the tubular support receiving axial bore of the printing form cylinder. The Opposite the tension channel is a with this aligned tension channel extension. Each leaf-shaped clamping element has an abutment, which engages in the tension channel extension. In condition "Tensioning" lies each leaf-shaped tensioning element both at a limitation of the span extension as well on a boundary of the upper, the tension channel assigned recess.

Bei Verdrehung des röhrenförmigen Trägers entgegen dem Uhrzeigersinn fluchtet das Paar Ausnehmungen sowohl mit dem Spannkanal als auch mit dem Spannkanalfortsatz so daß jedes blattförmige Spannelement in Aushängerichtung entfernbar ist.When rotating the tubular support against the Clockwise the pair of recesses are aligned the tension channel as well as with the tension channel extension that each leaf-shaped clamping element in the unhooking direction is removable.

Schließlich sind nach erfindungsgemäßen Ausführungsvarianten der Vorrichtung sowohl einzelne Spannelemente denkbar, die nebeneinander in axiale Richtung gebracht werden können als auch ein einzelnes sich radial erstreckendes mit axialen Ausbrüchen versehenes Spannelement. Andererseits ist es möglich, auch ein Spannelement vorzusehen, welches sich in axialer Richtung erstreckt, das diese Durchbrüche nicht aufweist.Finally, according to the invention Variants of the device both individual Clamping elements conceivable that are side by side in axial Direction can be brought as well as a single one extending radially with axial breakouts provided clamping element. On the other hand, it is possible also to provide a clamping element, which is in Extends axial direction that these breakthroughs do not having.

Verschiedene andere Kennzeichen und Vorteile der Erfindung ergeben sich aus der folgenden ausführlichen Beschreibung. Ausführungsformen der Erfindung werden als nicht begrenzende Beispiele in den im Anhang befindlichen Zeichnungen dargestellt.Various other characteristics and advantages of the Invention result from the following detailed Description. Embodiments of the invention will as non-limiting examples in the Appendix shown drawings.

Die Figur 1 ist eine schematische perspektivische Ansicht eines Druckformzylinders im Zustand "Klemmen ".Figure 1 is a schematic perspective View of a printing form cylinder in the "clamp" state.

Die Figur 2 ist ein schematischer Querschnitt des röhrenförmige Träger im Zustand "Klemmen".Figure 2 is a schematic cross section of the tubular supports in the "clamp" state.

Die Figur 3 ist eine schematische perspektivische Ansicht eines Druckformzylinders im Zustand "Druckformfreigabe".Figure 3 is a schematic perspective View of a printing form cylinder in the state "Release of printing form".

Die Figur 4 ist ein schematischer Querschnitt des röhrenförmigen Trägers mit beaufschlagter Membran im Zustand "Druckformfreigabe".Figure 4 is a schematic cross section of the tubular support with membrane acted upon Condition "approval of printing form".

Die Figur 5 ist ein schematischer Querschnitt des röhrenförmigen Trägers in der Axialbohrung im Druckformzylinder mit freigegebener hinterer Druckformkante und gespannter Vorderkante.Figure 5 is a schematic cross section of the tubular support in the axial bore in the Printing form cylinder with released rear Printing form edge and tensioned leading edge.

Die Figur 6 ist ein schematischer Querschnitt von einem in Entnahmeposition verdrehten röhrenförmigen Träger, so daß jedes blattförmige Spannelement radial entnehmbar ist.Figure 6 is a schematic cross section of one tubular support twisted in the removal position, so that each leaf-shaped clamping element is radial is removable.

Die Figuren 7,8 und 9 stellen verschiedene Ausführungsformen von Spannelementen dar, welche unterschiedliche elastische Eigenschaften aufweisen.Figures 7, 8 and 9 represent different ones Embodiments of clamping elements, which have different elastic properties.

Die Figur 1 stellt einen Druckformzylinder 1 dar, auf dessen Umfangsfläche eine Druckform 4 aufliegt, dessen Vorder- und Hinterkante 5,6 von einem Spannkanal 7 aufgenommen werden. Der Druckformzylinder 1 rotiert um eine Rotationsachse 2 in Richtung des Pfeiles 3. Der Druckformzylinder 1 weist eine axiale Bohrung auf, in der ein röhrenförmiger Träger lagert, der sich entlang einer Achse 8 über die Breite des Zylinders erstreckt. Der Spannkanal 7, welcher von den hier parallelen Wänden 9,10 begrenzt wird, führt in die axiale Bohrung, die den röhrenförmigen Träger 11 aufnimmt. In der dargestellten Ansicht erkennt man, daß in der Umfangsfläche des röhrenförmigen Trägers 11 hier einander gegenüberliegende Ausnehmungen 12 ausgeführt sind, in die blattförmige Spannelemente 13 wie zum Beispiel Blattfedern eingreifen. Die blattförmigen Spannelemente 13 weisen an ihrem unteren Ende einen durch Umbiegen der unteren Kante gebildeten Widerhaken 15 und an ihrem oberen Ende einen die Druckform spannenden Haken 14 auf. Der zwischen dem Haken 14 und dem Widerhaken 15 jedes blattförmigen Spannelementes liegende Abschnitt befindet sich gegenüber einem Betätigungsorgan 17. Dieses kann zum Beispiel als eine druckbeaufschlagbare Membran 17 oder als ein mechanisches Mittel wie zum Beispiel eine verdrehbare einseitig abgeflachte Stellwelle ausgeführt werden. Dieses Betätigungsorgan ist vorteilhafterweise fernsteuerbar.FIG. 1 shows a printing form cylinder 1 whose peripheral surface rests on a printing form 4, the Front and rear edge 5,6 of a tensioning channel 7 be included. The printing form cylinder 1 rotates an axis of rotation 2 in the direction of arrow 3. The Printing form cylinder 1 has an axial bore, in which stores a tubular support that runs along an axis 8 extends across the width of the cylinder. The tensioning channel 7, which of the parallel here Walls 9, 10 is limited, leads into the axial bore, which receives the tubular support 11. In the shown view you can see that in the Circumferential surface of the tubular support 11 here opposite recesses 12 executed are in the leaf-shaped clamping elements 13 such as Intervene example of leaf springs. The leaf-shaped Clamping elements 13 have one at their lower end barbs formed by bending the lower edge 15 and at its upper end the printing form exciting hook 14 on. The between the hook 14 and the barb 15 of each leaf-shaped tensioning element lying section is opposite one Actuator 17. This can, for example, as a pressurizable membrane 17 or as a mechanical means such as a rotatable one actuator shaft flattened on one side. This actuator is advantageous remotely controllable.

Unter Bezugnahme auf die Figur 2 ist die Vorderkante 5 der Druckform 4 in dem Spannkanal 7 gegen eine seiner Seitenwände 9 eingehangen.Die abgewinkelte Hinterkante 6 der Druckform 4 wird von dem Haken 14 des blattförmigen Spannelementes ergriffen.Referring to FIG. 2, the leading edge is 5th the printing form 4 in the clamping channel 7 against one of its Side walls 9 hung in. The angled rear edge 6 of the printing form 4 is from the hook 14 of the leaf-shaped clamping element is gripped.

Im dargestellten Zustand "Klemmen" ist das Betätigungsorgan, hier eine Membran 17, entlastet ; die Eigensteifigkeit des blattförmigen Spannelementes 13 zieht die Hinterkante 6 der biegsamen Druckform 4 in Richtung auf das Innere des Spannkanals 7 derart, daß der Druck, unter dem die zu befestigende Druckform 4 steht, in tangentialer Richtung zur Zylinderoberfläche 1 erhalten bleibt. Der Spannkanal 7 weist einen Spannkanalfortsatz 16 auf. Die Ausnehmungen 12 des röhrenförmigen Trägers 11 liegen einander gegenüber und werden von jedem blattförmigen Spannelement 13 durchdrungen. Das blattförmige Spannelement 13 ist mit seinem unteren Widerhaken 15 im Spannkanalfortsatz 16 festgelegt und beaufschlagt oberhalb seiner Wölbung den Rand der oberen Ausnehmung 12 im röhrenförmigen Träger 11. Das hier benutzte Betätigungsorgan ist druckentlastet, so daß die Spannkraft durch die Eigensteifigkeit des blattförmigen Spannelementes 13 aufgebracht und aufrecht erhalten bleibt.In the "clamp" state shown, this is Actuator, here a membrane 17, relieved; the Intrinsic stiffness of the leaf-shaped clamping element 13 pulls the trailing edge 6 of the flexible printing form 4 in Direction to the inside of the tensioning channel 7 such that the pressure under which the printing plate to be attached 4 stands in the tangential direction to the cylinder surface 1 remains. The tensioning channel 7 has one Span channel extension 16 on. The recesses 12 of the tubular support 11 face each other and are from each leaf-shaped clamping element 13th permeated. The leaf-shaped clamping element 13 is with its lower barb 15 in the tension channel extension 16 fixed and applied to the above its curvature Edge of the upper recess 12 in the tubular carrier 11. The actuator used here is relieved of pressure so that the clamping force by the Intrinsic stiffness of the leaf-shaped clamping element 13 upset and maintained.

Auf der Figur 3 ist erkennbar, daß die hintere von dem blattförmigen Spannelement 13 befreite Kante 6 oberhalb der Oberfläche des Zylinders 1 liegt. Wie die Figur 3 deutlich zeigt, wird die Wölbung des Hauptteils der blattförmigen Spannelemente 13 durch die Beaufschlagung des hier verwendeten Betätigungsorgans 17 völlig eliminiert. Wie insbesondere aus Figur 4 entnehmbar ist, ist in diesem Zustand der Freigabe der Druckformhinterkante 6 das hier verwendete Betätigungsorgan 17 mit Druck beaufschlagt. Als Druckmedium 22 kann Pressluft Verwendung finden. Das Betätigungsorgan 17 führt eine gestreckte Lage des blattförmigen Spannelementes 13 herbei, wobei dieses zwar im Spannkanalfortsatz 13 festgelegt bleibt, jedoch in der oberen der Ausnehmungen 12 wandert, bis es sich an die Seitenwand 9 des Spannkanals 7 anlegt. Durch diese dem blattförmigen Spannelement 13 aufgezwungene Bewegung wandert der Haken 14 nach hinten bezogen auf die Hinterkante 6 der Druckform 4 wodurch diese freigegeben wird. Die Hinterkante schnellt dadurch über die Position 6' in die von der Oberfläche des Druckformzylinders 1 abstehende Position wie in Figur 4 gezeigt.In Figure 3 it can be seen that the rear of the leaf-shaped clamping element 13 freed edge 6 above the surface of the cylinder 1. Like the figure 3 clearly shows the curvature of the main part of the leaf-shaped clamping elements 13 by the application of the actuator 17 used here completely eliminated. As can be seen in particular from FIG. 4 is in this state, the release of the Printing form trailing edge 6 that used here Actuator 17 pressurized. As Pressurized medium 22 can use compressed air. The Actuator 17 performs an extended position of the leaf-shaped clamping element 13, this remains fixed in the tension channel extension 13, however migrates in the upper of the recesses 12 until it bears against the side wall 9 of the tensioning channel 7. By this imposed on the leaf-shaped tensioning element 13 The movement of the hook 14 moves backwards the rear edge 6 of the printing form 4, thereby this is released. As a result, the rear edge overflows the position 6 'in the from the surface of the Printing form cylinder 1 protruding position as in Figure 4 shown.

Figur 5 zeigt das von der Oberfläche des Druckformzylinders 1 abstehende hintere Ende 6 der Druckform 4. In diesem Zustand ist das hier dargestellte verformbare membranförmige Betätigungsorgan 17 druckentlastet. Dadurch klemmt der Haken 14 des Spannelementes 13 wegen der Eigensteifigkeit des blattförmigen Spannelementes 13 die Vorderkante 5 der Druckform 4 gegen die Seitenwand 9 des Spannkanals 7. Bei langsamer Umdrehung des Druckformzylinders 1 im Uhrzeigersinn kann die Druckform 4 langsam von der Oberfläche des Druckformzylinders 1 entfernt und in eine automatische oder halbautomatische Plattenwechselvorrichtung eingeführt werden. Während dieses Vorganges bleibt die Vorderkante 5 der Druckform 4 dauerhaft geklemmt, da das blattförmige Spannelement 13 keiner Verformung ausgesetzt ist und durch seinen Widerhaken 15 im Spannkanalfortsatz 17 festgelegt bleibt.Figure 5 shows that from the surface of the Printing form cylinder 1 protruding rear end 6 of Printing form 4. In this condition, this is here shown deformable membrane-shaped Actuator 17 relieved of pressure. This jams the Hook 14 of the clamping element 13 because of Intrinsic stiffness of the leaf-shaped clamping element 13 the front edge 5 of the printing form 4 against the side wall 9 of the tensioning channel 7. When the rotation of the Printing cylinder 1 clockwise can Printing form 4 slowly from the surface of the Printing form cylinder 1 removed and in an automatic or semi-automatic plate changing device be introduced. During this process, the Front edge 5 of the printing plate 4 permanently clamped there the sheet-shaped clamping element 13 no deformation is exposed and through its barb 15 in Tension channel extension 17 remains fixed.

Im auf der Figur 6 dargestellten Zustand ist der röhrenförmige Träger 11 in Richtung des Pfeiles 19 verdreht. Der Spannkanalfortsatz 16 befindet sich jetzt gegenüber der unteren Ausnehmung 12 so daß sich der Widerhaken 15 des blattförmigen Spannelementes 13 durch diese führen läßt. Das blattförmige Spannelement 13 ist somit bei Druckentlastung des Betätigungsorganes 17 in Aushängerichtung 18 in Position 13' bewegbar und läßt sich danach einfach aus dem Spannkanal 7 entfernen. Man könnte zum Beispiel auch ein Spannelement mit einer anderen Federcharakteristik in den röhrenförmigen Träger 11 einführen bevor dieser entgegen der Richtung des Pfeiles 19 in seine ursprüngliche Betriebsposition zurückkehrt.In the state shown in FIG tubular support 11 in the direction of arrow 19 twisted. The tension channel extension 16 is now opposite the lower recess 12 so that the Barb 15 of the leaf-shaped clamping element 13 through this leads. The leaf-shaped clamping element 13 is thus with pressure relief of the actuator 17 in Unhooking direction 18 in position 13 'movable and leaves then simply remove it from the tensioning channel 7. Man could also be a clamping element with a different spring characteristics in the tubular Introduce carrier 11 before this against the direction the arrow 19 in its original operating position returns.

Die Figuren 7,8 und 9 stellen verschiedene mögliche Ausführungsnormen von Spannelementen dar.Figures 7, 8 and 9 represent different possible ones Implementation standards of clamping elements.

Neben den schon beschriebenen Spannelemente 13 welche nebeneinander in axialer Richtung in eine ihrer Anzahl entsprechende Anzahl von Ausnehmungen 12 eingeführt werden, kann man ebenfalls durchgängige blattförmige Spannelemente 20 bzw 21 vorsehen. Diese sind sowohl mit einem hakenförmigen Ende 14 zur Fixierung der Hinterkante 6 einer Druckform 4 als auch mit einem Widerhaken 15 versehen. Sie können sowohl mit als auch ohne Ausbrüche in axialer Richtung versehen sein, je nach erforderlichen Feder- bzw. Klemmcharakteristiken. Es liegt auf der Hand, daß durch die Materialwahl ebenfalls Einfluß auf die Federcharakteristiken genommen werden kann.In addition to the already described clamping elements 13 which side by side in the axial direction in one of their number corresponding number of recesses 12 introduced can also be continuous leaf-shaped Provide clamping elements 20 or 21. These are both with a hook-shaped end 14 for fixing the Trailing edge 6 of a printing form 4 as well as with a Barb 15 provided. You can use both without any breakouts in the axial direction, depending according to the required spring or clamping characteristics. It is obvious that through the choice of materials also influence the spring characteristics can be taken.

Die Höhe der durch das Betätigungsorgan 17 aufzubringenden Kräfte hängt in jedem Fall von den verwendeten Spannelementen ab. Es ist möglich, außer einer druckbeaufschlagten Membran auch eine verschwenkbare Stellwelle mit einer einseitigen Abflachung zu benutzen, um die Verformung der Spannelemente 13, 20 und 21 zu bewirken. The height of the actuator 17 In any case, the forces to be exerted depend on the used clamping elements. It is possible, except a pressurized membrane also one swiveling control shaft with a one-sided Use flattening to deform the To effect clamping elements 13, 20 and 21.

Die Erfindung ist in keiner Weise auf die beschriebenen und dargestellten Ausführungsbeispiele begrenzt, aber der Fachmann kann jede dem Wesen der Erfindung entsprechende Art von Weiterbildung vorsehen.The invention is in no way related to those described and illustrated embodiments limited, but those skilled in the art can understand the essence of the invention provide appropriate type of training.

Im besonderen ist es möglich gemäß einer nicht dargestellten Weiterbildung vorzusehen, daß jedes Spannelement von dem Betätigungsorgan elastisch mit dem Ziel verformt wird, die biegsame Druckform während des Normalbetriebes der Maschine auf dem Druckformzylinder festzuhalten und daß sowohl das Auf- als auch das Ausspannen der biegsamen Druckform durch die Freigabe jedes Spannelementes erreicht wird wodurch es seine Ausgangsform und Eigensteifigkeit wiederfindet.In particular, it is not possible according to one illustrated training to provide that each Clamping element from the actuator elastic with the The flexible printing form is deformed during the target Normal operation of the machine on the printing form cylinder and that both the opening and the Unclamping the flexible printing form by releasing it each clamping element is reached, making it his The original shape and inherent rigidity are recovered.

Claims (14)

  1. Device for mounting a flexible printing forme (4) on the forme cylinder (1) of a printing machine, having at least one slot running in the axial direction, at least one leaf-like spring element being located in the slot, which spring element terminates with a rounded portion and fixes a bent-over edge of a flexible printing forme, characterized in that each leaf-like spring element (13, 20, 21) is a clamping element which is held in a tubular support (11) which holds an actuating member (17) that deforms each clamping element.
  2. Device according to Claim 1, characterized in that the actuating member that deforms each clamping element (13, 20, 21) is a diaphragm body (17) which is acted upon by a pressure medium.
  3. Device according to Claim 1, characterized in that the actuating member that deforms each clamping element (13, 20, 21) is a mechanical means.
  4. Device according to Claim 3, characterized in that the mechanical means is a pivotable control shaft which is provided with a flattened portion on the circumference.
  5. Device according to Claim 1, characterized in that the tubular support (11) can be rotated in an axial bore of the forme cylinder (1).
  6. Device according to Claim 1, characterized in that the tubular support (11) has at least one pair of recesses (12) extending in the axial direction.
  7. Device according to Claim 6, characterized in that the pair of recesses (12) in the tubular support (11) is arranged with one located opposite the other.
  8. Device according to Claim 1, characterized in that the slot defines a cylinder gap (8) which is bounded by side walls (9, 10), passes through the axial bore and includes a flush cylinder-gap continuation.
  9. Device according to Claim 8, characterized in that each leaf-like clamping element (13, 20, 21) has an abutment (15) which engages in the cylinder-gap continuation (16).
  10. Device according to Claims 7 and 8, characterized in that, in the "clamping" state, each leaf-like clamping element (13, 20, 21) bears against a boundary of the cylinder-gap continuation (16) and against a boundary of the upper recess (12) assigned to the cylinder gap (8).
  11. Device according to Claim 10, characterized in that, when the tubular support (11) is rotated in the direction of disengagement (19), the pair of recesses (12) is flush with the cylinder gap (8) and its continuation (16), so that each leaf-like clamping element (13, 20, 21) can be removed in the unhooking direction (18).
  12. Device according to Claim 1, characterized in that the tubular support (11) holds a plurality of leaf-like clamping elements (13), distributed in the axial direction.
  13. Device according to Claim 1, characterized in that the tubular support (11) holds a leaf-like clamping element (20) which has recesses distributed in the axial direction.
  14. Device according to Claim 1, characterized in that the tubular support (11) holds a leaf-like clamping element (21) which is continuous in the axial direction.
EP95115212A 1994-11-24 1995-09-27 Device for mounting a flexible printing plate Expired - Lifetime EP0713770B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9414093 1994-11-24
FR9414093A FR2727350B1 (en) 1994-11-24 1994-11-24 FIXING DEVICE FOR A FLEXIBLE PRINTING FORM

Publications (2)

Publication Number Publication Date
EP0713770A1 EP0713770A1 (en) 1996-05-29
EP0713770B1 true EP0713770B1 (en) 1998-05-20

Family

ID=9469115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95115212A Expired - Lifetime EP0713770B1 (en) 1994-11-24 1995-09-27 Device for mounting a flexible printing plate

Country Status (6)

Country Link
US (1) US5738012A (en)
EP (1) EP0713770B1 (en)
JP (1) JPH08230157A (en)
CN (1) CN1130568A (en)
DE (1) DE59502239D1 (en)
FR (1) FR2727350B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1071558A1 (en) * 1998-02-17 2001-01-31 Goss Graphic Systems, Inc. Spring clip plate retainer
DE10015165A1 (en) * 2000-03-27 2001-10-18 Koenig & Bauer Ag Methods and devices for supplying pressure medium
WO2002043962A2 (en) 2000-11-28 2002-06-06 Koenig & Bauer Aktiengesellschaft Device for securing a packing and method for producing a channel
US6561094B1 (en) 1999-05-29 2003-05-13 Koenig & Bauer Aktiengesellschaft Device for fixing a flexible plate on a printing cylinder

Families Citing this family (11)

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DE19924787B4 (en) * 1999-05-29 2004-11-04 Koenig & Bauer Ag Device for attaching flexible plates
DE10236867B3 (en) * 2002-08-12 2004-03-25 Koenig & Bauer Ag Holder for blanket cylinder has pivoting retainer in channel defining tangential wall in periphery of cylinder
US6705226B1 (en) * 2002-08-29 2004-03-16 Agfa Corporation Media clamping apparatus and method for an external drum imaging system
DE10250684B3 (en) * 2002-10-31 2004-04-01 Koenig & Bauer Ag Production of a rotational body of a printing machine comprises forming profiled bodies by welding material to opposite-lying walls of a groove in the peripheral direction of the balls in the machine
DE102004020694A1 (en) * 2004-04-28 2005-11-24 Heidelberger Druckmaschinen Ag Device for clamping and holding a printing plate on a printing plate on an exposure drum
DE102005002684A1 (en) 2005-01-20 2006-08-03 Man Roland Druckmaschinen Ag Plate cylinder with a device for fixing circumferentially attachable printing plates
US6994027B1 (en) * 2005-03-03 2006-02-07 Agfa Corporation Device and method to prevent movement of a printing plate during clamping
DE102007002029B3 (en) * 2007-01-13 2008-04-10 Koenig & Bauer Aktiengesellschaft Rotary printing press's cylinder e.g. plate cylinder, has stop unit extending over entire width of cylinder cavity and comprising opening through which retaining units pass in direction of attachment slot
DE102007024426A1 (en) * 2007-05-25 2008-12-04 Maschinenfabrik Wifag Clamping device for printing plates
US9113845B2 (en) * 2009-01-08 2015-08-25 Given Imaging Ltd. Device and method for assembling in vivo sensing devices
CN105015147A (en) * 2015-07-14 2015-11-04 孙光英 Printing roller

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US3727551A (en) * 1971-07-22 1973-04-17 North American Rockwell Reversible lockup for flexible printing plate
DE3433045A1 (en) * 1984-09-08 1986-03-20 Basf Ag, 6700 Ludwigshafen LIGHT-HARDENABLE LOCKING MEASURES, ESPECIALLY TO CLOSE THE GAP BETWEEN THE END OF FORM CYLINDER PRINTING PLATES
DE3731039A1 (en) * 1987-09-16 1989-03-30 Koenig & Bauer Ag DEVICE FOR CLAMPING FLEXIBLE PRINT PLATES ON THE PLATE CYLINDER OF A ROTARY PRINTING MACHINE
DE4225949C2 (en) 1992-08-06 1994-10-13 Roland Man Druckmasch Device for attaching a flexible pressure plate
DE4326250C2 (en) * 1993-08-05 1996-05-15 Koenig & Bauer Albert Ag Clamping device in a rotary printing machine
FR2709168B1 (en) * 1993-08-20 1995-11-10 Heidelberg Harris Sa Device for temporary fluid connection between a source of pressurized fluid and a user member.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1071558A1 (en) * 1998-02-17 2001-01-31 Goss Graphic Systems, Inc. Spring clip plate retainer
US6561094B1 (en) 1999-05-29 2003-05-13 Koenig & Bauer Aktiengesellschaft Device for fixing a flexible plate on a printing cylinder
DE10015165A1 (en) * 2000-03-27 2001-10-18 Koenig & Bauer Ag Methods and devices for supplying pressure medium
DE10015165B4 (en) * 2000-03-27 2004-01-29 Koenig & Bauer Ag Device for supplying pressure medium
US6799513B2 (en) * 2000-03-27 2004-10-05 Koenig & Bauer Aktiengesellschaft Method and device for supplying hydraulic fluid
WO2002043962A2 (en) 2000-11-28 2002-06-06 Koenig & Bauer Aktiengesellschaft Device for securing a packing and method for producing a channel
DE10058996C1 (en) * 2000-11-28 2002-06-13 Koenig & Bauer Ag Pulling-up mechanism fixing device has channel with single one-lever fixing device in each section perpendicular to axial direction of cylinder
US6862991B2 (en) 2000-11-28 2005-03-08 Koenig & Bauer Ajtuebgesekkscgaft Cylinder and device for securing a flexible packing on the cylinder

Also Published As

Publication number Publication date
US5738012A (en) 1998-04-14
DE59502239D1 (en) 1998-06-25
JPH08230157A (en) 1996-09-10
FR2727350A1 (en) 1996-05-31
CN1130568A (en) 1996-09-11
FR2727350B1 (en) 1997-02-14
EP0713770A1 (en) 1996-05-29

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