EP1384582B1 - Device for handling sleeves on printing machine cylinders - Google Patents

Device for handling sleeves on printing machine cylinders Download PDF

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Publication number
EP1384582B1
EP1384582B1 EP03016374A EP03016374A EP1384582B1 EP 1384582 B1 EP1384582 B1 EP 1384582B1 EP 03016374 A EP03016374 A EP 03016374A EP 03016374 A EP03016374 A EP 03016374A EP 1384582 B1 EP1384582 B1 EP 1384582B1
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EP
European Patent Office
Prior art keywords
sleeve
receiving element
printing
cylinder
slot
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
EP03016374A
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German (de)
French (fr)
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EP1384582A2 (en
EP1384582A3 (en
Inventor
Josef Göttling
Thomas Hartmann
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1384582A2 publication Critical patent/EP1384582A2/en
Publication of EP1384582A3 publication Critical patent/EP1384582A3/en
Application granted granted Critical
Publication of EP1384582B1 publication Critical patent/EP1384582B1/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
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes

Definitions

  • the invention relates to a device for handling sleeves on cylinders of printing presses according to the preamble of patent claim 1.
  • a device for handling sleeves on cylinders which shifts printing forme sleeves or rubber-coated sleeves on the free end of cantilevered printing cylinder.
  • a sleeve detection system is provided on the corresponding printing cylinder, which detects the surface of the sleeve with a guide element at a predeterminable axial position frictionally and shifts the sleeve by means of a pneumatic cylinder on the printing cylinder in the axial direction.
  • disassembly pieces are known which comprise a sleeve annular and can be clamped with clamping means around the sleeve.
  • One of the dismantling pieces is designed in the form of an open ring, the its opposite ends is provided with tabs, which can be contracted with a screw so that the annular part clamped around the sleeve.
  • Another embodiment shows an annular disassembly piece, which is divided into two separate halves, between which the sleeve is clamped. On the two halves gripping pieces are provided, act on which springs or pneumatic cylinder to clamp the sleeve.
  • DE 100 44 909 also relates to a device for removing a pressure sleeve from a cantilevered cylinder.
  • axially positionable contact elements are provided on the circumference of the pressure sleeve, which are employed to generate a frictional force to the pressure sleeve.
  • a band provided of inherently rigid material, which is adapted to the outer shape of the pressure sleeve. By a tensioning device, this band can be clamped around the pressure sleeve, similar to the disassembly from US 4 549 923.
  • the object of the invention is to provide a device for handling sleeves on cylinders of printing presses, which ensures a stable recording and holding a pressure sleeve and excludes damage. This object is achieved by the characterizing features of claim 1.
  • the device according to the invention makes it possible in an advantageously simple manner to suspend and remove sleeves (printing plate sleeves with or without seam or blanket sleeves) on impression cylinders.
  • sleeves can be accommodated gently and at the same time stably and, in an advantageous manner, damage such as bumps or kinks can be avoided.
  • the form of large-diameter sleeves can be stabilized excellent by the device according to the invention, whereby the insertion and removal of such sleeves is substantially simplified.
  • the device can be adapted to the diameter differences during expansion of the sleeve for pushing or pulling off the cylinder in an advantageous manner. At the same time this measure allows a simple recording of the sleeve in the device.
  • an inventively designed device from a labile sleeve is a relatively stiff, easy to handle tube.
  • the device it is possible to bring the pressure sleeves in relation to their circumference and their axial position in predetermined positions, that is, they can be applied register and register on a printing cylinder.
  • the application of a sleeve can be further simplified to a printing cylinder, as this allows a tilt-free sliding.
  • vibrations of the sleeves can be damped, whereby an advantageous reduction of the noise pollution is achieved.
  • sleeve used in relation to the present invention include both printing plate sleeves, seamless sleeves which are used as printing form, and blanket sleeves - with or without stitching.
  • Fig. 1 shows a cantilevered pressure cylinder 1, on which a sleeve 2 is pushed.
  • the sleeve 2 is received at its one end by a device 3 designed according to the invention and attached with its free other end to the cylinder 1.
  • a handle 11 is provided on the device 3.
  • the mounting aid 24 is arranged as an extension of the axis of rotation coaxial with the cylinder 1 and cooperates with a bore 25 on the device 3.
  • the assembly aid 24 is preferably designed as a cylindrical rod or tube and is arranged so that the device 3 is first threaded with the sleeve 2 at the bore 25 and guided before the front end of the sleeve 2 is attached to the cylinder 1.
  • 2 compressed air can be blown into the space between the surface of the cylinder 1 and the sleeve be, whereby the inner diameter of the sleeve 2 expands.
  • the device 3 for handling sleeves on cylinders of printing presses consists essentially of an annular intrinsically rigid receiving element 5, which is adapted to the respective outer shape of the corresponding sleeve and is provided for receiving the sleeve.
  • a corresponding device 3 can be provided for each sleeve diameter.
  • the receiving element 5 is connected via spacers 18 with a retaining ring 13, on which brackets 21 are arranged with a handle 11.
  • the annular receiving element 5 is preferably made of a suitable plastic and has an inner diameter corresponding approximately to the tube diameter.
  • the receiving element 5 is slotted parallel to the main axis of the sleeve and spanned by one or more rubber bands 17, so that the opposing joints on the slot 4 are pressed together. Characterized the original circumferential length of the receiving element 5 is shortened by the width of the slot 4, resulting in a reduction of the inner diameter. By this reduction of the inner diameter acts on the surface of the - received in the receiving element 5 - sleeve a normal force which generates a frictional force between the sleeve and the receiving element 5, so that the sleeve is received frictionally.
  • the width of the slot By the width of the slot, the diameter difference between the sleeve and the receiving element 5 and thus the clamping force on the sleeve is set or limited. The wider the slot, the larger the diameter difference and the force acting on the sleeve. If the slot provided too wide, so the full clamping force of the clamping means 17 come into effect.
  • the width of the slot 4 is selected so that the inner diameter of the receiving element 5 can be compressed to about the extent of the outer diameter of the sleeve or slightly smaller.
  • the circumference of the receiving element 5 can be widened against the elasticity of the rubber bands 17.
  • a recess is provided at the joint, which receives a spreading element 16.
  • the expansion element 16 is pivotally connected to a - rotatably mounted on a bearing block 14 - lever 12. By pulling the lever 12, the spreader 16 can be moved against the force of a spring 15 in the slot 4.
  • On the expansion element 16 are - compared to the direction of movement inclined - surfaces provided, for example, a conical shell, which with clamp corresponding surfaces on the receiving element 5 and the slot 4 thereby widen. This is illustrated in Fig. 2a, which illustrates the corresponding section of the slot 4.
  • the device 3 is pulled with a - applied to the handle 11 - lever 12 on a, preferably perpendicular, sleeve.
  • first stops 19 may be provided, which define the axial position of the sleeve in the receiving element 5.
  • the lever 12 can be relaxed, so that the sleeve is frictionally locked in place Device 3 is included.
  • the inner wall of the receiving element 5 may be coated with a material which, in cooperation with the surface of the sleeve, gives a greater coefficient of friction or adhesives, such as adhesives, may be applied. Another way to improve the adhesion is to increase the normal force on the surface of the sleeve.
  • one or more peripheral depressions 6 can be provided on the inner wall of the receiving element 5 facing the sleeve, which are connected to a vacuum connection 8.
  • the adjacent circumferential surface of the sleeve seals the recesses 6 from the ambient air pressure, whereby it is sucked due to a negative pressure effect on the inner wall of the receiving element 5.
  • a vacuum generator 9 on the device 3.
  • the vacuum generator 9 can be connected to a compressed air connection 10 and converts the overpressure into a negative pressure.
  • additional clamping means can be provided which - are placed outside on the receiving element 5 - for example in the form of tension bands - and can be clamped by mechanical, pneumatic, hydraulic or electrical actuators.
  • a marking 7 can be provided on the device 3, on which, for example, the seam of a welded pressure sleeve can be aligned.
  • the marking 7, the device 3 is aligned at a further mark on the printing cylinder, so that the weld is located at a predetermined circumferential position on the cylinder.
  • a pin which dips into a corresponding receptacle - for example, a bore - on the printing cylinder.
  • 3 damping elements 23 may be provided on the device, which rest against the outside of the sleeve and thereby the vibrations of the Steam the sleeve. If the sleeve is expanded during application or removal by compressed air, so the receiving element 5 can be adapted in an advantageous manner against the clamping force of the rubber bands 17 to the diameter differences.

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  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Printing Plates And Materials Therefor (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Handhabung von Hülsen auf Zylindern von Druckmaschinen gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for handling sleeves on cylinders of printing presses according to the preamble of patent claim 1.

Aus der DE 43 41 246 ist eine Einrichtung zur Handhabung von Hülsen auf Zylindern bekannt, welche Druckformhülsen oder gummibeschichtete Hülsen über das freie Ende von fliegend gelagerten Druckwerkszylinder verschiebt. Dazu wird an den entsprechenden Druckwerkszylindern ein Hülsenerfassungssystem vorgesehen, welches die Oberfläche der Hülse mit einem Führungselement an einer vorbestimmbaren axialen Position kraftschlüssig erfaßt und die Hülse mittels eines Pneumatikzylinders auf dem Druckwerkszylinder in axialer Richtung verschiebt. Aus der US 4 549 923 sind Demontagestücke bekannt, welche eine Hülse ringförmig umfassen und sich mit Spannmitteln um die Hülse verspannen lassen. Eines der Demontagestücke ist in Form eines offenen Ringes ausgeführt, der an seinen sich gegenüberstehenden Enden mit Laschen versehen ist, welche sich mit einer Schraube so zusammenziehen lassen, daß sich das ringförmige Teil um die Hülse verspannt. Eine andere Ausführung zeigt ein ringförmiges Demontagestück, das in zwei separate Hälften geteilt ist, zwischen welchen die Hülse verspannt wird. An den beiden Hälften sind jeweils Griffstücke vorgesehen, an welchen Federn oder Pneumatikzylinder wirken, um die Hülse zu verspannen.
Die DE 100 44 909 betrifft ebenfalls eine Vorrichtung zum Abnehmen einer Druckhülse von einem fliegend gelagerten Zylinder. Wie bereits aus der DE 43 41 246 bekannt, sind axial am Umfang der Druckhülse positionierbare Kontaktelemente vorgesehen, welche zur Erzeugung einer Reibungskraft an die Druckhülse angestellt werden. Dazu ist in einem Ausführungsbeispiel aus der DE 100 44 909 ein Band, aus eigensteifem Material vorgesehen, welches an die äußere Form der Druckhülse angepaßt ist. Durch eine Spannvorrichtung läßt sich dieses Band um die Druckhülse herum spannen, analog zum Demontagestück das aus der US 4 549 923.From DE 43 41 246 a device for handling sleeves on cylinders is known, which shifts printing forme sleeves or rubber-coated sleeves on the free end of cantilevered printing cylinder. For this purpose, a sleeve detection system is provided on the corresponding printing cylinder, which detects the surface of the sleeve with a guide element at a predeterminable axial position frictionally and shifts the sleeve by means of a pneumatic cylinder on the printing cylinder in the axial direction. From US 4 549 923 disassembly pieces are known which comprise a sleeve annular and can be clamped with clamping means around the sleeve. One of the dismantling pieces is designed in the form of an open ring, the its opposite ends is provided with tabs, which can be contracted with a screw so that the annular part clamped around the sleeve. Another embodiment shows an annular disassembly piece, which is divided into two separate halves, between which the sleeve is clamped. On the two halves gripping pieces are provided, act on which springs or pneumatic cylinder to clamp the sleeve.
DE 100 44 909 also relates to a device for removing a pressure sleeve from a cantilevered cylinder. As already known from DE 43 41 246 axially positionable contact elements are provided on the circumference of the pressure sleeve, which are employed to generate a frictional force to the pressure sleeve. For this purpose, in one embodiment from DE 100 44 909 a band, provided of inherently rigid material, which is adapted to the outer shape of the pressure sleeve. By a tensioning device, this band can be clamped around the pressure sleeve, similar to the disassembly from US 4 549 923.

Bei allen eingangs beschriebenen Vorrichtungen besteht die Gefahr, die Druckhülse zu beschädigen.In all devices described above, there is a risk of damaging the printing sleeve.

Aufgabe der Erfindung ist es, eine Vorrichtung zur Handhabung von Hülsen auf Zylindern von Druckmaschinen zu schaffen, welche ein stabiles Aufnehmen und Halten einer Druckhülse gewährleistet und Beschädigungen ausschließt.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.The object of the invention is to provide a device for handling sleeves on cylinders of printing presses, which ensures a stable recording and holding a pressure sleeve and excludes damage.
This object is achieved by the characterizing features of claim 1.

Die erfindungsgemäße Vorrichtung ermöglicht es in vorteilhaft einfacher Weise Hülsen (Druckplattenhülsen mit oder ohne Naht oder Gummituchhülsen) auf Druckzylinder aufzuschieben und abzuziehen.
Durch die erfindungsgemäße Vorrichtung können Hülsen behutsam und gleichzeitig stabil aufgenommen werden und in vorteilhafter Weise Beschädigungen, wie Beulen oder Knicke vermieden werden.
insbesondere die Form von Hülsen mit großem Durchmesser kann durch die erfindungsgemäße Vorrichtung ausgezeichnet stabilisiert werden, wodurch das Aufschieben und Abziehen solcher Hülsen wesentlich vereinfacht wird.
Durch ein geschlitztes Aufnahmeelement kann sich die Vorrichtung in vorteilhafter Weise an die Durchmesserunterschiede beim Aufweiten der Hülse zum Aufschieben bzw. Abziehen vom Zylinder anpassen. Gleichzeitig wird durch dies Maßnahme ein einfaches Aufnehmen der Hülse in die Vorrichtung ermöglicht.The device according to the invention makes it possible in an advantageously simple manner to suspend and remove sleeves (printing plate sleeves with or without seam or blanket sleeves) on impression cylinders.
By means of the device according to the invention, sleeves can be accommodated gently and at the same time stably and, in an advantageous manner, damage such as bumps or kinks can be avoided.
in particular, the form of large-diameter sleeves can be stabilized excellent by the device according to the invention, whereby the insertion and removal of such sleeves is substantially simplified.
By a slotted receiving element, the device can be adapted to the diameter differences during expansion of the sleeve for pushing or pulling off the cylinder in an advantageous manner. At the same time this measure allows a simple recording of the sleeve in the device.

In einer erfindungsgemäß ausgeführten Vorrichtung wird aus einer labilen Hülse ein relativ steifes, gut handhabbares Rohr.
Durch die Vorrichtung ist es möglich, die Druckhülsen in Bezug auf ihre Umfangssowie ihrer axialen Lage in vorgegebene Positionen zu bringen, das heißt sie können passer- und registergenau auf einen Druckzylinder aufgebracht werden.
Durch eine Montagehilfe kann das Aufbringen einer Hülse auf einen Druckzylinder noch weiter vereinfacht werden, da diese ein verkantungsfreies Aufschieben ermöglicht.
Durch Vorsehung von Dämpfungselementen an der erfindungsgemäßen Vorrichtung können Schwingungen der Hülsen gedämpft werden, wodurch eine vorteilhafte Reduzierung der Lärmbelästigung erreicht wird.In an inventively designed device from a labile sleeve is a relatively stiff, easy to handle tube.
By the device, it is possible to bring the pressure sleeves in relation to their circumference and their axial position in predetermined positions, that is, they can be applied register and register on a printing cylinder.
By mounting aid, the application of a sleeve can be further simplified to a printing cylinder, as this allows a tilt-free sliding.
By providing damping elements on the device according to the invention, vibrations of the sleeves can be damped, whereby an advantageous reduction of the noise pollution is achieved.

Weitere Merkmale und Vorteile ergeben sich aus den Unteransprüchen in Verbindung mit der Beschreibung.Other features and advantages will become apparent from the dependent claims in conjunction with the description.

Die Erfindung wird nachfolgend anhand einer beispielhaften Ausführungsform näher erläutert. In der schematischen

Fig. 1
ist die Vorrichtung mit einer Hülse beim Aufbringen auf einen Druckzylinder dargestellt und die
Fig. 2
zeigt die Vorrichtung alleine in einer räumlichen Ansicht.
The invention will be explained in more detail below with reference to an exemplary embodiment. In the schematic
Fig. 1
the device is shown with a sleeve when applied to a printing cylinder and the
Fig. 2
shows the device alone in a spatial view.

Die in Bezug auf die vorliegende Erfindung benutzten Begriffe Druckhülse bzw. Hülse schließen sowohl Druckplattenhülsen, nahtlose Hülsen, weiche als Druckform verwendet werden, als auch Gummituchhülsen - mit oder ohne Naht- ein.
Die Fig. 1 zeigt einen fliegend gelagerten Druckzylinder 1, auf den eine Hülse 2 aufgeschoben wird. Dazu wird die Hülse 2 an ihrem einen Ende von einer erfindungsgemäß ausgeführten Vorrichtung 3 aufgenommen und mit ihrem freien anderen Ende am Zylinder 1 angesetzt. Zum Halten und Aufschieben der Hülse 2 in Pfeilrichtung, ist an der Vorrichtung 3 ein Handgriff 11 vorgesehen. Um beim Aufschieben der Hülse 2 ein Verkanten zu verhindern, kann es vorteilhaft sein eine Montagehilfe 24 vorzusehen. Die Montagehilfe 24 wird als Verlängerung der Drehachse koaxial zum Zylinder 1 angeordnet und wirkt mit einer Bohrung 25 an der Vorrichtung 3 zusammen. Die Montagehilfe 24 ist vorzugsweise als zylindrische Stange oder Rohr ausgeführt und ist so angeordnet, dass die Vorrichtung 3 mit der Hülse 2 zunächst an der Bohrung 25 eingefädelt und geführt wird bevor das vordere Ende der Hülse 2 am Zylinder 1 angesetzt wird. Um das Aufbringen oder Abziehen der Hülse 2 vom Zylinder 1 zu erleichtern, kann in den Zwischenraum zwischen der Oberfläche des Zylinders 1 und der Hülse 2 Druckluft eingeblasen werden, wodurch sich der Innendurchmesser der Hülse 2 aufweitet. Sobald die Hülse 2 am Druckzylinder positioniert ist, kann die Vorrichtung 3 und die Montagehilfe 24 entfernt werden.
Anhand der Fig. 2 wird eine beispielhafte Ausführung der erfindungsgemäßen Vorrichtung 3 näher beschrieben. Die Vorrichtung 3 zur Handhabung von Hülsen auf Zylindern von Druckmaschinen besteht im wesentlichen aus einem ringförmigen eigensteifen Aufnahmeelement 5, welches an die jeweilige äußere Form der entsprechenden Hülse angepasst ist und zur Aufnahme der Hülse vorgesehen ist.
Für jeden Hülsendurchmesser kann eine entsprechende Vorrichtung 3 vorgesehen werden. Es ist jedoch auch möglich für kleinere Hülsendurchmesser Reduzierstücke vorzusehen, welche den Durchmesserunterschied zwischen dem Außendurchmesser der Hülse und dem Aufnahmeelement 5 überbrücken.
Das Aufnahmeelement 5 ist über Distanzstücke 18 mit einem Haltering 13 verbunden, an welchem Halterungen 21 mit einem Handgriff 11 angeordnet sind.
Das ringförmige Aufnahmeelement 5 wird vorzugsweise aus einem geeigneten Kunststoff hergestellt und weist einen Innendurchmesser entsprechend etwa dem Hülsendurchmesser auf. Das Aufnahmeelement 5 wird parallel zur Hauptachse der Hülse geschlitzt und von einem oder mehreren Gummibändern 17 umspannt, so dass die sich gegenüberliegenden Stoßstellen am Schlitz 4 aneinander gepresst werden. Dadurch wird die ursprüngliche Umfangslänge des Aufnahmeelements 5 um die Breite des Schlitzes 4 verkürzt, wodurch sich eine Verkleinerung des Innendurchmessers ergibt. Durch diese Verkleinerung des Innendurchmessers wirkt an der Oberfläche der - im Aufnahmeelement 5 aufgenommenen - Hülse eine Normalkraft, welche zwischen der Hülse und dem Aufnahmeelement 5 eine Reibungskraft erzeugt, so dass die Hülse kraftschlüssig aufgenommen ist. Durch die Breite des Schlitzes wird die Durchmesserdifferenz zwischen der Hülse und dem Aufnahmeelement 5 und somit die Spannkraft an der Hülse festgelegt bzw begrenzt. Je breiter der Schlitz ist, desto größer wird die Durchmesserdifferenz und die Kraft, welche auf die Hülse wirkt. Wird der Schlitz zu breit vorgesehen, so kann die volle Spannkraft der Spannmittel 17 zur Wirkung kommen. Vorzugsweise wird die Breite des Schlitzes 4 so gewählt, dass sich der Innendurchmesser des Aufnahmeelements 5 auf etwa das Maß des Außendurchmessers der Hülse oder geringfügig kleiner zusammendrücken lässt.
Um eine Hülse mit der Vorrichtung 3 aufzunehmen, kann der Umfang des Aufnahmeelements 5 entgegen der Spannkraft der Gummibänder 17 aufgeweitet werden. Dazu ist am Stoß eine Ausnehmung vorgesehen, welche ein Spreizelement 16 aufnimmt. Das Spreizelement 16 ist gelenkig mit einem - an einem Lagerbock 14 drehbar gelagerten - Hebel 12 verbunden. Durch Ziehen am Hebel 12 kann das Spreizelement 16 entgegen der Kraft einer Feder 15 im Schlitz 4 verschoben werden. Am Spreizelement 16 sind - gegenüber der Bewegungsrichtung geneigte - Flächen vorgesehen, beispielsweise ein Kegelmantel, welche sich mit entsprechenden Flächen am Aufnahmeelement 5 verspannen und den Schlitz 4 dadurch aufweiten. Dies ist in Fig. 2a veranschaulicht, welche den entsprechenden Ausschnitt des Schlitzes 4 darstellt.
Zum Aufnehmen einer Druckhülse wird die Vorrichtung 3 mit gezogenem - am Handgriff 11 anliegenden - Hebel 12 auf eine, vorzugsweise senkrecht stehende, Hülse aufgesetzt. Am Haltering 13 können erste Anschläge 19 vorgesehen werden, welche die axiale Position der Hülse im Aufnahmeelement 5 festlegen. Sobald die Hülse an den - gleichmäßig am Umfang verteilt angeordneten - Anschlägen 19 anliegt und eine etwaig vorhandene Schweißnaht an der Hülse auf eine - am Aufnahmeelement 5 angebrachte - Markierung 7 ausgerichtet ist, kann der Hebel 12 entspannt werden, so dass die Hülse kraftschlüssig in der Vorrichtung 3 aufgenommen ist.
Zur Vergrößerung der Reibungskraft kann die Innenwandung des Aufnahmeelements 5 mit einem Material beschichtet sein, welches in Zusammenwirkung mit der Oberfläche der Hülse einen größeren Reibungswert ergibt oder es können Haftmittel, wie beispielsweise Kleber, aufgetragen werden.
Eine weitere Möglichkeit den Kraftschluss zu verbessern besteht darin, die Normalkraft an der Oberfläche der Hülse zu vergrößern. Dazu können an der- der Hülse zugewandten - Innenwandung des Aufnahmeelements 5 eine oder mehrere umlaufende Vertiefungen 6 vorgesehen werden, welche mit einem Unterdruckanschluss 8 verbunden sind. Die anliegende Umfangsoberfläche der Hülse dichtet die Vertiefungen 6 gegenüber dem Umgebungsluftdruck ab, wodurch sie aufgrund einer Unterdruckwirkung an die Innenwandung des Aufnahmeelements 5 angesaugt wird. Dazu kann es vorteilhaft sein, an der Vorrichtung 3 einen Unterdruckerzeuger 9 vorzusehen. Der Unterdruckerzeuger 9 kann an einen Druckluftanschluss 10 angeschlossen werden und wandelt den Überdruck in einen Unterdruck um.
Zur weiteren Vergrößerung der Spannkraft können zusätzliche Spannmittel vorgesehen werden, welche - beispielsweise in Form von Spannbändern - außen über das Aufnahmeelement 5 gelegt werden und durch mechanische, pneumatische, hydraulische oder elektrische Betätigungseinrichtungen verspannt werden können. Dies könnte ein hydraulisch oder pneumatisch aufpumpbares Spannelement sein, welches außen um das Aufnahmeelement 5 gelegt wird und sich in aufgepumptem Zustand an einem umschließenden starren Stützring abstützt und nach innen eine Spannkraft auf das Aufnahmeelement 5 ausübt.
Es können auch schlauchförmige aufpumpbare Spannelemente zwischen dem Innenumfang des Aufnahmeelements 5 und dem Außendurchmesser der Hülse vorgesehen werden.
Nachdem die Hülse entsprechend der jeweiligen Erfordernisse in der Vorrichtung aufgenommen ist, kann sie wie anhand der Fig. 1 erläutert auf einen Druckzylinder 1 aufgebracht werden. Um die Hülse 2 seitenregistergenau auf den Druckzylinder 1 zu montieren, können neben den ersten Anschlägen 19 (Fig. 2), welche die axiale Position der Hülse gegenüber der Vorrichtung 3 festlegen, weitere Anschläge 20 vorgesehen werden, welche die Aufschiebebewegung am Zylinder begrenzen. Dadurch können alle Druckhülsen mit den verschiedenen Bildern für die unterschiedlichen Druckfarben, in der gleichen relativen axialen Position gegenüber dem Druckprodukt auf die verschiedenen Druckzylinder aufgebracht werden, so dass die Farben nacheinander genau übereinander aufgetragen werden.
Um auch in der Umfangsrichtung der Druckhülsen eine Positionierung vorzunehmen, kann an der Vorrichtung 3 eine Markierung 7 vorgesehen werden, an welcher beispielsweise die Naht einer geschweißten Druckhülse ausgerichtet werden kann. Beim Aufschieben der Hülse wird die Markierung 7, der Vorrichtung 3 an einer weiteren Markierung am Druckzylinder ausgerichtet, so dass die Schweißnaht an einer vorbestimmten umfänglichen Position am Zylinder liegt. Zur Ausrichtung in Umfangsrichtung könnte an der Vorrichtung 3 ein Stift vorgesehen werden, der in eine entsprechende Aufnahme - zum Beispiel eine Bohrung - am Druckzylinder eintaucht.
Um die, beim Aufschieben bzw. Abziehen der Hülsen auftretenden - durch Druckluft erzeugten, Lärmbelästigungen zu vermindern, welche aufgrund der in Schwingungen versetzten Hülsen entstehen, können an der Vorrichtung 3 Dämpfungselemente 23 vorgesehen werden, welche außen an der Hülse anliegen und dadurch die Schwingungen der Hülse dämpfen.
Wird die Hülse beim Aufbringen oder Abziehen durch Druckluft aufgeweitet, so kann sich das Aufnahmeelement 5 in vorteilhafter Weise entgegen der Spannkraft der Gummibänder 17 an die Durchmesserunterschiede anpassen.The terms sleeve used in relation to the present invention include both printing plate sleeves, seamless sleeves which are used as printing form, and blanket sleeves - with or without stitching.
Fig. 1 shows a cantilevered pressure cylinder 1, on which a sleeve 2 is pushed. For this purpose, the sleeve 2 is received at its one end by a device 3 designed according to the invention and attached with its free other end to the cylinder 1. For holding and sliding the sleeve 2 in the direction of arrow, a handle 11 is provided on the device 3. To prevent jamming when sliding the sleeve 2, it may be advantageous to provide a mounting aid 24. The mounting aid 24 is arranged as an extension of the axis of rotation coaxial with the cylinder 1 and cooperates with a bore 25 on the device 3. The assembly aid 24 is preferably designed as a cylindrical rod or tube and is arranged so that the device 3 is first threaded with the sleeve 2 at the bore 25 and guided before the front end of the sleeve 2 is attached to the cylinder 1. In order to facilitate the application or removal of the sleeve 2 from the cylinder 1, 2 compressed air can be blown into the space between the surface of the cylinder 1 and the sleeve be, whereby the inner diameter of the sleeve 2 expands. Once the sleeve 2 is positioned on the printing cylinder, the device 3 and the mounting aid 24 can be removed.
2, an exemplary embodiment of the device 3 according to the invention will be described in more detail. The device 3 for handling sleeves on cylinders of printing presses consists essentially of an annular intrinsically rigid receiving element 5, which is adapted to the respective outer shape of the corresponding sleeve and is provided for receiving the sleeve.
For each sleeve diameter, a corresponding device 3 can be provided. However, it is also possible to provide for smaller diameter sleeve reducers, which bridge the difference in diameter between the outer diameter of the sleeve and the receiving element 5.
The receiving element 5 is connected via spacers 18 with a retaining ring 13, on which brackets 21 are arranged with a handle 11.
The annular receiving element 5 is preferably made of a suitable plastic and has an inner diameter corresponding approximately to the tube diameter. The receiving element 5 is slotted parallel to the main axis of the sleeve and spanned by one or more rubber bands 17, so that the opposing joints on the slot 4 are pressed together. Characterized the original circumferential length of the receiving element 5 is shortened by the width of the slot 4, resulting in a reduction of the inner diameter. By this reduction of the inner diameter acts on the surface of the - received in the receiving element 5 - sleeve a normal force which generates a frictional force between the sleeve and the receiving element 5, so that the sleeve is received frictionally. By the width of the slot, the diameter difference between the sleeve and the receiving element 5 and thus the clamping force on the sleeve is set or limited. The wider the slot, the larger the diameter difference and the force acting on the sleeve. If the slot provided too wide, so the full clamping force of the clamping means 17 come into effect. Preferably, the width of the slot 4 is selected so that the inner diameter of the receiving element 5 can be compressed to about the extent of the outer diameter of the sleeve or slightly smaller.
To accommodate a sleeve with the device 3, the circumference of the receiving element 5 can be widened against the elasticity of the rubber bands 17. For this purpose, a recess is provided at the joint, which receives a spreading element 16. The expansion element 16 is pivotally connected to a - rotatably mounted on a bearing block 14 - lever 12. By pulling the lever 12, the spreader 16 can be moved against the force of a spring 15 in the slot 4. On the expansion element 16 are - compared to the direction of movement inclined - surfaces provided, for example, a conical shell, which with clamp corresponding surfaces on the receiving element 5 and the slot 4 thereby widen. This is illustrated in Fig. 2a, which illustrates the corresponding section of the slot 4.
For receiving a pressure sleeve, the device 3 is pulled with a - applied to the handle 11 - lever 12 on a, preferably perpendicular, sleeve. On the retaining ring 13 first stops 19 may be provided, which define the axial position of the sleeve in the receiving element 5. As soon as the sleeve rests against the stops 19, which are distributed uniformly around the circumference, and any welding seam present on the sleeve is aligned with a marking 7 attached to the receiving element 5, the lever 12 can be relaxed, so that the sleeve is frictionally locked in place Device 3 is included.
To increase the frictional force, the inner wall of the receiving element 5 may be coated with a material which, in cooperation with the surface of the sleeve, gives a greater coefficient of friction or adhesives, such as adhesives, may be applied.
Another way to improve the adhesion is to increase the normal force on the surface of the sleeve. For this purpose, one or more peripheral depressions 6 can be provided on the inner wall of the receiving element 5 facing the sleeve, which are connected to a vacuum connection 8. The adjacent circumferential surface of the sleeve seals the recesses 6 from the ambient air pressure, whereby it is sucked due to a negative pressure effect on the inner wall of the receiving element 5. For this purpose, it may be advantageous to provide a vacuum generator 9 on the device 3. The vacuum generator 9 can be connected to a compressed air connection 10 and converts the overpressure into a negative pressure.
To further increase the clamping force additional clamping means can be provided which - are placed outside on the receiving element 5 - for example in the form of tension bands - and can be clamped by mechanical, pneumatic, hydraulic or electrical actuators. This could be a hydraulically or pneumatically inflatable tensioning element, which is placed externally around the receiving element 5 and is supported in the inflated state on an enclosing rigid support ring and exerts a clamping force on the receiving element 5 inwards.
It is also possible to provide tubular inflatable tensioning elements between the inner circumference of the receiving element 5 and the outer diameter of the sleeve.
After the sleeve is received according to the respective requirements in the device, it can as explained with reference to FIG. 1 on a printing cylinder 1 are applied. In order to assemble the sleeve 2 on the impression cylinder 1 with register accuracy, further stops 20 can be provided next to the first stops 19 (FIG. 2), which fix the axial position of the sleeve relative to the device 3, which delimit the sliding movement on the cylinder. As a result, all the printing sleeves with the different images for the different printing inks can be applied to the different printing cylinders in the same relative axial position with respect to the printed product, so that the colors are successively applied exactly one above the other.
In order to carry out a positioning also in the circumferential direction of the pressure sleeves, a marking 7 can be provided on the device 3, on which, for example, the seam of a welded pressure sleeve can be aligned. When pushing the sleeve, the marking 7, the device 3 is aligned at a further mark on the printing cylinder, so that the weld is located at a predetermined circumferential position on the cylinder. For alignment in the circumferential direction could be provided on the device 3, a pin which dips into a corresponding receptacle - for example, a bore - on the printing cylinder.
In order to reduce the, when pushing or pulling the sleeves occurring - generated by compressed air, noise pollution, which arise due to the oscillated sleeves, 3 damping elements 23 may be provided on the device, which rest against the outside of the sleeve and thereby the vibrations of the Steam the sleeve.
If the sleeve is expanded during application or removal by compressed air, so the receiving element 5 can be adapted in an advantageous manner against the clamping force of the rubber bands 17 to the diameter differences.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Zylindercylinder
22
Hülseshell
33
Vorrichtungcontraption
44
Schlitzslot
55
Aufnahmeelementreceiving element
66
Vertiefungdeepening
77
Markierungmark
88th
UnterdruckanschlußVacuum connection
99
UnterdruckerzeugerVacuum generator
1010
DruckluftanschlußCompressed air connection
1111
Handgriffhandle
1212
Hebellever
1313
Halteringretaining ring
1414
Lagerbockbearing block
1515
Federfeather
1616
Spreizelementspreader
1717
Gummibandrubber band
1818
Distanzstückspacer
1919
Anschlagattack
2020
Anschlagattack
2121
Halterungbracket
2323
Dämpfungselementdamping element
2424
Montagehilfemounting aid
2525
Bohrungdrilling

Claims (12)

  1. A device for handling a sleeve (2) on a cylinder (1) of a printing machine
    - having an annular and inherently rigid receiving element (5) that has at least one slot parallel to the main axis of the sleeve,
    - and is adapted to the outer form of the sleeve (2),
    characterised in that
    - the sleeve (2) is spanned by elastic clamping means (17) on its outer circumferential face so that the sleeve (2) can be received in a force-locking manner,
    - with the elastic clamping means (17) bracing the ends of the receiving element (5) together at the point of impact formed by the slot (4) so that the clamping force on the sleeve (2) can be limited by the width of the slot (4),
    - and having a means (16) to widen the receiving element (5) in opposition to the clamping force of the elastic clamping means (17).
  2. A device according to claim 1, characterised in that the width of the slot (4) on the receiving element (5) is selected so that the inside diameter of the receiving element (5) can be compressed to substantially the same size as the outside diameter of the sleeve (2) or slightly smaller.
  3. A device according to one of the preceding claims, characterised in that at least one rubber band (17) placed externally around the receiving element (5) is provided as the clamping means.
  4. A device according to one of the preceding claims, characterised in that provided on the inner wall of the receiving element (5) - facing the sleeve (2) - there is at least one depression (6) that is connected to a low-pressure connection (8) so that the circumferential surface of the sleeve (2) can be drawn by suction onto the inner wall of the receiving element (5) on account of a low-pressure effect.
  5. A device according to one of the preceding claims, characterised in that adhesive means, such as glue, for example, are applied to the inner wall of the receiving element (5).
  6. A device according to one of the preceding claims, characterised in that a spreading element (16) that is braced as a result of displacement in the slot (4) against the two ends of the receiving element (5) is provided as the means to widen the receiving element (5) circumferentially.
  7. A device according to one of the preceding claims, characterised in that an additional clamping means is provided that is placed as a clamping band externally over the receiving element (5) and is braced by mechanical, pneumatic, hydraulic or electrical actuating devices.
  8. A device according to one of the preceding claims, characterised in that an additional clamping means is provided that consists of a supporting ring and also of a clamping element that can be pumped up hydraulically or pneumatically and surrounds the receiving element (5) externally, the pumped-up clamping element being stayed externally on the supporting ring and exerting a clamping force inwardly on the receiving element (5).
  9. A device according to one of the preceding claims, characterised in that first axial stops (19) are provided that fix the axial position of the printing sleeve in the receiving element (5), and further stops (20) are provided that fix the axial position of the device (3) in relation to the printing cylinder so that the sleeve (2) can be mounted on the printing cylinder in lateral register.
  10. A device according to one of the preceding claims, characterised in that provided on the device (3) there is a marking (7) for the circumferential position of a seam location on the printing sleeve (2) with regard to the device (3), and provided on the device (3) there is an element that engages into a receiver on the printing cylinder so that the seam of the printing sleeve (2) lies at a predetermined circumferential position with regard to the cylinder (1).
  11. A device according to one of the preceding claims, characterised in that provided on the device (3) there are damping elements (23) that grip the sleeve (2) externally and damp vibrations of the sleeve (2).
  12. A device according to one of the preceding claims, characterised in that provided on the printing cylinder (1) there is an assembly aid (24) that cooperates with a guide (25) on the device (3) in such a way that the sleeve (2) is guided coaxially to the cylinder axis when applied to the printing cylinder (1).
EP03016374A 2002-07-26 2003-07-19 Device for handling sleeves on printing machine cylinders Expired - Lifetime EP1384582B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10234329A DE10234329B3 (en) 2002-07-26 2002-07-26 Device for handling a sleeve on a cylinder of a printing press
DE10234329 2002-07-26

Publications (3)

Publication Number Publication Date
EP1384582A2 EP1384582A2 (en) 2004-01-28
EP1384582A3 EP1384582A3 (en) 2004-11-17
EP1384582B1 true EP1384582B1 (en) 2006-04-12

Family

ID=29796600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03016374A Expired - Lifetime EP1384582B1 (en) 2002-07-26 2003-07-19 Device for handling sleeves on printing machine cylinders

Country Status (5)

Country Link
US (1) US6789479B2 (en)
EP (1) EP1384582B1 (en)
JP (1) JP3974559B2 (en)
CA (1) CA2435975C (en)
DE (2) DE10234329B3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10220608C1 (en) * 2002-05-08 2003-11-06 Windmoeller & Hoelscher press
US7207267B2 (en) * 2003-09-22 2007-04-24 Kodak Graphic Communications Canada Company Apparatus and method for manipulation of sleeves on a cylinder
DE102004021492B3 (en) * 2004-04-30 2005-10-13 Man Roland Druckmaschinen Ag Device for removing sleeves
DE102004022181B3 (en) * 2004-05-05 2005-11-03 Man Roland Druckmaschinen Ag Support frame for inner roller for printing machine, being fitted with outer roller casing has baseplate with centering elements for inner roller, held apart by three vertical columns
DE102005022986A1 (en) * 2005-05-19 2006-11-23 Man Roland Druckmaschinen Ag Web-fed rotary printing press with at least one printing unit
JP6405170B2 (en) * 2014-09-18 2018-10-17 昭和アルミニウム缶株式会社 Plate mounting jig and plate mounting method
JP6472519B2 (en) * 2014-12-04 2019-02-20 ボブスト メックス ソシエテ アノニム Sleeve extractor, flat substrate conversion unit, and method for extracting sleeve

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053791B1 (en) * 1980-12-04 1984-12-19 Dai Nippon Insatsu Kabushiki Kaisha Sleeve-type gravure printing cylinder and method and apparatus for its assembly
US5062193A (en) * 1989-01-03 1991-11-05 International Composites Corporation Method for mounting and dismounting rigid sleeves onto and from a cylinder
US5072504A (en) * 1989-01-03 1991-12-17 International Composites Corporation Method for axially mounting and dismounting rigid sleeves onto, and from, cylinders
DE4341246C1 (en) * 1993-12-03 1995-02-23 Roland Man Druckmasch Device for handling sleeves on cylinders
US5802975A (en) 1993-12-03 1998-09-08 Man Roland Druckmaschinen Ag Device for manipulating sleeves on cylinders
US5537923A (en) * 1995-05-24 1996-07-23 Huntsman Packaging Corporation Printing sleeve air pressure mounting apparatus
US5743539A (en) * 1996-06-10 1998-04-28 Tri Tool Inc. Quick setting and release actuator for work holder
US5745968A (en) * 1996-09-10 1998-05-05 Reeves Brothers, Inc. Sound dampening tool for cylindrical printing blankets
US6250223B1 (en) * 1999-10-22 2001-06-26 Heidelberger Druckmaschinen Ag Blanket tube removal device
US6386103B1 (en) 1999-10-22 2002-05-14 Heidelberger Druckmaschinen Ag Blanket tube removal device
EP1362697B1 (en) * 2002-05-18 2005-04-06 Fischer & Krecke Gmbh & Co. Device for handling printing sleeves

Also Published As

Publication number Publication date
EP1384582A2 (en) 2004-01-28
US6789479B2 (en) 2004-09-14
EP1384582A3 (en) 2004-11-17
DE50302939D1 (en) 2006-05-24
US20040139873A1 (en) 2004-07-22
JP3974559B2 (en) 2007-09-12
CA2435975C (en) 2006-07-18
JP2004058666A (en) 2004-02-26
DE10234329B3 (en) 2004-02-19
CA2435975A1 (en) 2004-01-26

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