EP0607552B1 - Device for reducing material bulging on tubular printing sleeve - Google Patents

Device for reducing material bulging on tubular printing sleeve Download PDF

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Publication number
EP0607552B1
EP0607552B1 EP93119864A EP93119864A EP0607552B1 EP 0607552 B1 EP0607552 B1 EP 0607552B1 EP 93119864 A EP93119864 A EP 93119864A EP 93119864 A EP93119864 A EP 93119864A EP 0607552 B1 EP0607552 B1 EP 0607552B1
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EP
European Patent Office
Prior art keywords
cylinder
circumferential surface
printing sleeve
multiplicity
medium
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
EP93119864A
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German (de)
French (fr)
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EP0607552A3 (en
EP0607552A2 (en
Inventor
Douglas Joseph Dawley
James B. Vrotacoe
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Publication of EP0607552A3 publication Critical patent/EP0607552A3/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/193Transfer cylinders; Offset cylinders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/10Forme cylinders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F27/00Devices for attaching printing elements or formes to supports
    • B41F27/10Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105Devices 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 present invention relates to Offset printing machines and in particular on a device for the reduction of material bulges on one gap-free, tubular pressure sleeve on a cylinder is assembled.
  • print images are made of printing plates, which are mounted on plate cylinders, by Transfer cylinder, known as a blanket cylinder, on a transferring moving material web.
  • Transfer cylinder known as a blanket cylinder
  • Blankets mounted on those blanket cylinders which a rubber surface for the transfer of printed images exhibit.
  • Conventional printing plates and blankets are Rectangular in shape and are arranged in axial columns along the circumferential surface of the corresponding Extend plate and blanket cylinder, assembled.
  • a number of other problems are to be combined with this design, so that the quality of the final printed product is adversely affected.
  • FR-A-2 192 914 shows a printing plate or blanket, which is caused by constant suction air Cylinder is held on the peripheral surface.
  • the opposite ends of the printing blanket or the printing plate form a gap, creating an interrupted Surface results, which at high Rotation speeds can lead to vibrations.
  • US-A-4,144,813 discloses sleeves which are designed for mounting on one conical core using compressed air be expanded.
  • DE-U-85 32 300 shows a roller tube for printing presses an exchangeable casing tube. To build a the elevator of the casing tube with undersize enabling air pressure Before mounting it, a mounting tube on the roller tube postponed.
  • a tubular To assemble printing form or a tubular rubber blanket at one end of a corresponding cylinder Air duct is provided on which the sleeve is mounted should.
  • the channel delivers through a variety of passages Compressed air radially outwards. While the pressure sleeve over the Is placed in passages, the outflowing compressed air expands the pressure sleeve radially and thus enables the Pressure sleeve on the circumferential surface of the corresponding cylinder is mounted axially.
  • This arrangement contains the problem that at the contact point the pressure sleeve and the corresponding cylinder air is included. Generated while the press is running this trapped air is a continuous propulsive wave that precedes the pressure zone between the correspond to cylinders and an adjacent cylinder presses the gap and thus bulges the pressure sleeve causes. This phenomenon is known as pressure sleeve bead. It is caused by defects in the duplication Printed product.
  • An object of the present invention is that Device which causes bulges of material Waves of a medium removed to provide.
  • the present invention includes the device for connecting the contact surface of the cylinder and the pressure sleeve with a low pressure area the pressure sleeve with at least one groove that runs along whose inner circumferential surface expands through which the enclosed wave of a medium flows out.
  • the present invention includes the device for connecting the contact surface of the cylinder and the pressure sleeve with a low pressure area a variety of small, granular particles between which Gaps are formed through which the enclosed Wave of a medium flows out.
  • An advantage of the present invention is that the included wave that causes the bulge Medium is removed without affecting the quality of the final Printed product is reduced.
  • Another advantage of the present invention is that Doubling is eliminated and thus the overall quality of the final printed product is improved.
  • Another advantage of the present invention is that this traps the enclosed wave of a medium can remove several revolutions of the cylinder, so that after Assembling the printing sleeve the printing activity almost immediately can continue.
  • Fig. 1 shows a web material 10, which by a Passes gap 12 between a blanket cylinder 14, on which a gap-free, tubular rubber blanket 16 is mounted and an impression cylinder 18 in an offset Printing press. It should be understood that the printing cylinder 18th by another with a rubber blanket Blanket cylinder can be replaced to either side to be able to print the web material 10.
  • the rubber blanket 16 transfers print images from a tubular printing form 20, which is mounted on a printing form cylinder 22, on the Web material 10.
  • A also forms in the printing form 20 Bulge 30. This is caused by a wave of a Medium 31, which is in front of the gap 28 between the Blanket cylinder 14 and the printing form cylinder 22nd moving forward, caused.
  • the waves of one Medium 25, 27 and 31 are created by air, which, during the blanket 16 is mounted on the blanket cylinder 14, is included, or while the printing form 20 on the Printing form cylinder 22 is mounted. This included Compressed air creates bulges 24, 26, and 30 in front of the Columns 28 and 12.
  • the shaft of the media 25 continuously moves forward around the blanket cylinder 14, causing the blanket 16 to move relative to the blanket cylinder with each revolution. This movement causes the image transferred to the blanket 16 to be in a different position with each revolution relative to the printing form 20.
  • the distance between any given image transferred to the blanket 16 and the latent image of a previous revolution that has been embossed on the blanket causes two images to be printed on the web material 10, that is , doubling takes place. This duplication is an undesirable printing error.
  • the 27 and 31 have similar effects.
  • the present invention relates to a device for Removal of the waves of a medium directed which the Generate bulges in the blanket 16 and the printing form 20.
  • the mentioned invention sees a way before that along the advancing waves of a Medium (trapped air) from below the pressure sleeve, d. i.e., the blanket 16 or the printing form 20, flow out can.
  • a Medium trapped air
  • the system which constitutes the present invention to Remove any media from the enclosed media Geometry can be applied, which enables the Medium from a contact surface of the pressure sleeve and its corresponding cylinder, d. H. from the blanket cylinder 14 or from the printing form cylinder 22 to an area with a lower pressure than the hydrodynamic pressure in the Waves of the medium can escape.
  • Fig. 3 represents is such a device that a cylinder 40 with a Has groove 50, which extends over the circumferential Extends surface of the cylinder.
  • the groove 50 connects the contact point of the cylinder 40 and one thereon assembled pressure sleeve (not shown) with a Air duct 60.
  • the air duct 60 delivers compressed air through the Passages 65 to radially expand the pressure sleeve so that this can be mounted on the cylinder 40. While the Printing machine is running, the air duct 60 can, however Ventilate the atmosphere so that the waves of the medium flow out through the grooves 50 into a low pressure region can.
  • Fig. 4 shows a related embodiment, wherein a Cylinder 70 is provided which has a groove 80 which spiral around the circumferential surface of the Rubber blanket cylinder around and across it.
  • Figures 3 and 4 are single straight and one single spiral groove can show many such Grooves that can be connected to each other or also not be provided.
  • the present invention is also not limited to these configurations.
  • the Grooves 50 and 80 can be any type of geometric Configuration and any type of cross-section.
  • a cylinder 90 is a plurality of has separate holes 100 that have a contact point of the cylinder 90 and a pressure sleeve 105 mounted thereon (shown in Fig. 6) connect to a low pressure area.
  • FIG. 6 shows the plurality of holes 100 formed by the circumferential surface of the cylinder 90 in a channel 110, which opens into the air duct (not shown), lead and which, while the printing press is running, to the atmosphere ventilated, as in the embodiments of Figures 3 and 4 is shown.
  • This embodiment is not based on that Arrangement limited, which shown in Figures 5 and 6 becomes. Almost any arrangement of holes can be used and the holes can be any kind of geometric Have configuration.
  • This embodiment provides a cylinder which has a rough circumferential Surface with one of Maxima 130 and Minima 140 has a certain contour.
  • the Maxima 130 and Minima 140 can be made from a variety of cords or roughened be shaped.
  • the Minima 140 connect the contact point of the Cylinder 120 and a pressure sleeve 150 mounted thereon an area which has a lower pressure than that of the advancing wave of a medium.
  • the Pressure sleeve 150 rides on the Maxima 130 and enables thus the escape of the enclosed waves Medium about the Minima 140.
  • a tubular, gap-free pressure sleeve 200 mounted on a cylinder 210 intended.
  • the pressure sleeve 200 has a groove 220, which extend along their inner circumferential surface expands.
  • the groove 220 connects the contact surface of the Pressure sleeve 200 and the cylinder 210 with a Low pressure area and provides a path along which the enclosed waves of a medium can escape.
  • the groove 220 can be any type of geometric Configuration and any type of cross-section. It can also have a variety of such grooves that may or may not be connected to each other, be provided.
  • the inner circumferential surface of the Pressure sleeve 200 can also have a rough contour, which is determined by maxima and minima, and in which the enclosed waves of the medium through the minima escape.
  • FIG. 9 shows yet another embodiment of the present invention, wherein a tubular gapless pressure sleeve 250 mounted on a cylinder 260 is provided.
  • a foreign substance ie small, granular particles 270, such as. B. talc, introduced at the contact point of the pressure sleeve 250 and the cylinder 260.
  • the pressure sleeve 250 rests on the small, granular particles 270, which enables the enclosed medium to flow into a low-pressure region via the spaces 280 formed between the particles.
  • the small granular particles 270 can have any type of geometric configuration, so that the spaces 280 formed between the particles allow the enclosed medium to flow into a low pressure region.
  • the area in which the included Medium flows either the atmosphere, a created one Vacuum or any other area that could be one has lower pressure than the pressure going forward moving waves of a medium.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Description

Die vorliegende Erfindung bezieht sich auf Offsetdruckmaschinen und insbesondere auf eine Vorrichtung für die Reduzierung von Materialausbuchtungen auf einer spaltfreien, rohrförmigen Druckhülse, die auf einem Zylinder montiert wird.The present invention relates to Offset printing machines and in particular on a device for the reduction of material bulges on one gap-free, tubular pressure sleeve on a cylinder is assembled.

Im Offsetdruck werden Druckbilder von Druckplatten, welche auf Plattenzylinder montiert sind, durch Übertragungszylinder, bekannt als Gummituchzylinder, auf eine sich bewegende Materialbahn übertragen. Typischerweise sind Gummitücher auf diejenigen Gummituchzylinder montiert, welche für die Übertragung von Druckbildern eine Gummioberfläche aufweisen. Herkömmliche Druckplatten und Gummitücher sind rechteckig geformt und werden in achsialen Spalten, die sich entlang der umfänglichen Oberfläche des korrespondierenden Platten- und Gummituchzylinders ausdehnen, montiert. Ein Problem mit diesem Design ist das, daß bei hohen Laufgeschwindigkeiten die Spalte in den Platten- und Gummituchzylindern innerhalb der Druckmaschine Vibrationen erzeugen, welche den Effekt der Variierung der optischen Dichte des Druckbildes haben. Eine Anzahl anderer Probleme sind mit diesem Design zu verbinden, so daß die Qualität des endgültigen Druckproduktes negativ beeinflußt wird.In offset printing, print images are made of printing plates, which are mounted on plate cylinders, by Transfer cylinder, known as a blanket cylinder, on a transferring moving material web. Typically are Blankets mounted on those blanket cylinders which a rubber surface for the transfer of printed images exhibit. Conventional printing plates and blankets are Rectangular in shape and are arranged in axial columns along the circumferential surface of the corresponding Extend plate and blanket cylinder, assembled. A The problem with this design is that at high Speeds the column in the plate and Blanket cylinders inside the press vibrate generate which has the effect of varying the optical Have density of the printed image. A number of other problems are to be combined with this design, so that the quality of the final printed product is adversely affected.

FR-A-2 192 914 zeigt eine Druckplatte oder ein Drucktuch, welches durch konstante Saugluftbeaufschlagung eines Zylinders auf dessen Umfangsfläche gehalten wird. Die gegenüberliegenden Enden des Drucktuches oder der Druckplatte bilden einen Spalt, wodurch sich eine unterbrochene Oberfläche ergibt, welche bei hohen Rotationsgeschwindigkeiten zu Vibrationen führen kann.FR-A-2 192 914 shows a printing plate or blanket, which is caused by constant suction air Cylinder is held on the peripheral surface. The opposite ends of the printing blanket or the printing plate form a gap, creating an interrupted Surface results, which at high Rotation speeds can lead to vibrations.

Viele dieser Probleme wurden gelöst, indem das Gummituch mit einer spaltfreien äußeren umfänglichen Oberfläche rohrförmig geformt wurde. Außerdem wird durch Ersetzen der konventionellen flachen Druckplatte durch eine rohrförmige Druckform, welche eine spaltfreie äußere umfängliche Oberfläche aufweist, endloses Drucken möglich. Einrichtungen dieser Art zeigen jedoch verschiedene Mißstände auf.Many of these problems have been solved by using the rubber blanket a gap-free outer peripheral surface tubular was formed. Also, by replacing the conventional flat pressure plate through a tubular Printing form, which a gap-free outer circumferential Surface has, endless printing possible. Facilities However, this kind of situation shows various grievances.

US-A-4,144,813 offenbart Hülsen, die zum Aufziehen auf einen konisch ausgeführten Kern mittels Druckluftbeaufschlagung geweitet werden.US-A-4,144,813 discloses sleeves which are designed for mounting on one conical core using compressed air be expanded.

DE-U-85 32 300 zeigt ein Walzenrohr für Druckmaschinen mit einem auswechselbaren Mantelrohr. Zum Aufbau eines den Aufzug des Mantelrohres mit Untermaß ermöglichenden Luftdruckes wird vor dessen Montage ein Montagerohr auf daas Walzenrohr aufgeschoben.DE-U-85 32 300 shows a roller tube for printing presses an exchangeable casing tube. To build a the elevator of the casing tube with undersize enabling air pressure Before mounting it, a mounting tube on the roller tube postponed.

Um eine rohrförmige Druckhülse, d. h. eine rohrförmige Druckform oder ein rohrförmiges Gummituch zu montieren, wird an einem Ende eines korrespondierenden Zylinders ein Luftkanal vorgesehen, an welchem die Hülse montiert werden soll. Der Kanal liefert durch eine Vielzahl von Durchgängen Druckluft radial nach außen. Während die Druckhülse über den Durchgängen platziert wird, dehnt die ausströmende Druckluft die Druckhülse radial aus und ermöglicht es somit, daß die Druckhülse auf der umfänglichen Oberfläche des korrespondierenden Zylinders achsial montiert wird. Da der innere Umfang der Druckhülse geringfügig schmaler ist als der äußere Umfang des korrespondierenden Zylinders, wird die Druckhülse, nachdem sie montiert ist, durch den korrespondieren Zylinder gespannt, um zwischen der Druckhülse und dem korrespondierenden Zylinder ein enges Druckverhältnis zu erzeugen. Dieses Druckverhältnis befestigt die Druckhülse dauerhaft auf dem korrespondierenden Zylinder, so daß während der Betätigung der Druckmaschine keine relative Bewegung dazwischen stattfindet.To a tubular pressure sleeve, d. H. a tubular To assemble printing form or a tubular rubber blanket at one end of a corresponding cylinder Air duct is provided on which the sleeve is mounted should. The channel delivers through a variety of passages Compressed air radially outwards. While the pressure sleeve over the Is placed in passages, the outflowing compressed air expands the pressure sleeve radially and thus enables the Pressure sleeve on the circumferential surface of the corresponding cylinder is mounted axially. Since the inner circumference of the pressure sleeve is slightly narrower than the outer circumference of the corresponding cylinder, the Pressure sleeve, after it is installed, through the correspond tensioned cylinders between the Pressure sleeve and the corresponding cylinder a tight To generate pressure ratio. This pressure ratio attaches the pressure sleeve permanently to the corresponding one Cylinder so that during operation of the printing press there is no relative movement between them.

Diese Anordnung enthält das Problem, daß an der Kontaktstelle der Druckhülse und dem korrespondierenden Zylinder Luft eingeschlossen wird. Während die Druckmaschine läuft, erzeugt diese eingeschlossene Luft eine sich kontinuierlich forwärtsbewegende Welle, die vor der Druckzone zwischen dem korrespondieren Zylinder und einem anliegenden Zylinder gegen den Spalt drückt und somit das Ausbuchten der Druckhülse bewirkt. Dieses Phänomen ist als Druckhülsenwulst bekannt. Es verursacht durch Doubliererscheinungen Mängel im Druckprodukt.This arrangement contains the problem that at the contact point the pressure sleeve and the corresponding cylinder air is included. Generated while the press is running this trapped air is a continuous propulsive wave that precedes the pressure zone between the correspond to cylinders and an adjacent cylinder presses the gap and thus bulges the pressure sleeve causes. This phenomenon is known as pressure sleeve bead. It is caused by defects in the duplication Printed product.

Es wurden mehrere Versuche gemacht, Druckhülsenwulst zu reduzieren oder zu beseitigen, aber keiner der Versuche war erfolgreich. Ein Versuch war z. B., Störungen zwischen der Druckhülse und dem korrespondierenden Zylinder zu erhöhen. Ein weiterer Versuch war z. B., die Materialkombination der Druckhülse und der korrespondierenden Zylinderoberfläche in eine Kombination, welche einen höheren Reibungskoeffizienten aufweist, zu verändern. Beide dieser Versuche sind gescheitert da die primäre Ursache von Druckhülsenwulst nicht durch das Rutschen der Druckhülse relativ zum korrespondierenden Zylinder verursacht wird.Several attempts have been made to close the pressure sleeve bead reduce or eliminate, but none of the attempts was successful. One attempt was e.g. B., interference between the Pressure sleeve and the corresponding cylinder to increase. Another attempt was e.g. B., the combination of materials Pressure sleeve and the corresponding cylinder surface in a combination that has a higher coefficient of friction has to change. Both of these attempts are failed because the primary cause of pressure sleeve bead not by sliding the pressure sleeve relative to corresponding cylinder is caused.

Ein anderer Versuch, welcher unternommen wurde eine Lösung zu finden war der, die Normalkräfte zwischen dem korrespondierenden Zylinder und dessen anliegenden Zylindern zu verringern. Obwohl diese Lösung die Geschwindigkeit der Druckhülsenausbuchtung reduziert, reduziert sie ebenfalls die Druckqualität auf ein unakzeptierbares Niveau. Ein weiterer Versuch wurde unternommen, welcher das mechanische dauerhafte Befestigen der Druckhülse auf dem korrespondierenden Zylinder umfaßt. Dieser Versuch war ebenfalls erfolglos, da die Druckhülse zu dünn war, um den Kräften standzuhalten, die notwendig waren, die Druckhülsenausbuchtung zu stoppen, und die das Einreißen der Druckhülse zur Folge hatten.Another attempt, which was made to resolve was to find the normal forces between the corresponding cylinder and its adjacent cylinders to reduce. Although this solution is the speed of Reduced pressure sleeve bulge, it also reduces the Print quality to an unacceptable level. Another Attempt was made which the mechanical permanent Attach the pressure sleeve to the corresponding cylinder includes. This attempt was also unsuccessful because the Pressure sleeve was too thin to withstand the forces that were necessary to stop the pressure sleeve bulge, and which caused the pressure sleeve to tear.

Die Mangelhaftigkeit jeder dieser Versuche kann nicht beseitigt werden.The inadequacy of each of these attempts cannot be eliminated.

Eine Aufgabe der vorliegenden Erfindung ist die, eine Vorrichtung, welche Materialausbuchtungen verursachende Wellen eines Mediums entfernt, vorzusehen.An object of the present invention is that Device which causes bulges of material Waves of a medium removed to provide.

Die vorliegende Erfindung sieht eine Vorrichtung für die Reduzierung von Materialausbuchtungen auf einer spaltfreien, rohrförmigen Druckhülse in einer Offsetdruckmaschine vor, welche von mindestens einer sich forwärtsbewegenden Welle eines Mediums verursacht wird, die einen bestimmten Druck aufweist, welche umfaßt:

  • Einen Zylinder, der für die Montage der Druckhülse an dessen umfänglicher Oberfläche angepaßt wird; und
  • eine Einrichtung zur Verbindung einer Kontaktfläche des Zylinders und der Druckhülse mit einem unter Druck stehenden Bereich, in welchem der Druck geringer ist als der Druck in der Welle des Mediums, womit es der an der Kontaktfläche eingeschlossenen, vor dem Spalt zwischen dem Zylinder und dem anliegenden Zylinder vorwärtsbewegenden Welle des Mediums ermöglicht ist, in den Niederdruckbereich zu entströmen.
  • The present invention provides an apparatus for reducing bulges of material on a gap-free, tubular printing sleeve in an offset printing machine, which is caused by at least one advancing shaft of a medium having a certain pressure, which comprises:
  • A cylinder that is adapted for mounting the pressure sleeve on its circumferential surface; and
  • a device for connecting a contact surface of the cylinder and the pressure sleeve with a pressurized area, in which the pressure is less than the pressure in the shaft of the medium, making it the one enclosed on the contact surface, in front of the gap between the cylinder and the adjacent one Cylinder advancing shaft of the medium is allowed to flow into the low pressure area.
  • In einer Ausführungsform der vorliegenden Erfindung umfaßt die Einrichtung zur Verbindung der Kontaktfläche des Zylinders und der Druckhülse mit einem Niederdruckbereich den Zylinder mit mindestens einer Rille, die sich entlang dessen umfänglicher Oberfläche ausdehnt und durch welche die eingeschlossene Welle des Mediums entströmt.Included in one embodiment of the present invention the device for connecting the contact surface of the Cylinder and the pressure sleeve with a low pressure area Cylinder with at least one groove that runs along it circumferential surface and through which the trapped wave of the medium flows out.

    In einer anderen Ausführungsform der vorliegenden Erfindung umfaßt die Einrichtung für die Verbindung der Kontaktfläche des Zylinders und der Druckhülse mit einem Niederdruckbereich die Druckhülse mit mindestens einer Rille, die sich entlang deren innerer umfänglichen Oberfläche ausdehnt, durch welche die eingeschlossene Welle eines Mediums entströmt.In another embodiment of the present invention includes the device for connecting the contact surface of the cylinder and the pressure sleeve with a low pressure area the pressure sleeve with at least one groove that runs along whose inner circumferential surface expands through which the enclosed wave of a medium flows out.

    In einer weiteren Ausführungsform der vorliegenden Erfindung umfaßt die Einrichtung für die Verbindung der Kontaktfläche des Zylinders und der Druckhülse mit einem Niederdruckbereich eine Vielzahl von kleinen, körnigen Partikeln, zwischen denen Zwischenräume geformt sind, durch welche die eingeschlossene Welle eines Mediums entströmt.In a further embodiment of the present invention includes the device for connecting the contact surface of the cylinder and the pressure sleeve with a low pressure area a variety of small, granular particles between which Gaps are formed through which the enclosed Wave of a medium flows out.

    Ein Vorteil der vorliegenden Erfindung ist der, daß die eingeschlossene, die Ausbuchtung verursachende Welle eines Mediums entfernt wird, ohne daß die Qualität des endgültigen Druckprodukts reduziert wird.An advantage of the present invention is that the included wave that causes the bulge Medium is removed without affecting the quality of the final Printed product is reduced.

    Ein weiterer Vorteil der vorliegenden Erfindung ist der, daß Doublieren beseitigt wird und somit die allgemeine Qualität des endgültigen Druckprodukts verbessert wird.Another advantage of the present invention is that Doubling is eliminated and thus the overall quality of the final printed product is improved.

    Ein weiterer Vorteil der vorliegenden Erfindung liegt darin, daß diese die eingeschlossene Welle eines Mediums durch mehrere Umdrehungen des Zylinders entfernen kann, so daß nach Montage der Druckhülse die Drucktätigkeit fast sofort fortgesetzt werden kann.Another advantage of the present invention is that that this traps the enclosed wave of a medium can remove several revolutions of the cylinder, so that after Assembling the printing sleeve the printing activity almost immediately can continue.

    Diese und andere Gegenstände, Merkmale und Vorteile der vorliegenden Erfindung werden im Hinblick auf die nachfolgende Beschreibung und die beigefügten Zeichungen offensichtlich.

    Fig. 1
    ist eine graphische Seitenansicht einer Offsetdruckmaschine, welche eine durch die Welle eines Mediums verursachte Ausbuchtung einer rohrförmigen Druckform und eines rohrförmigen Gummituches, gemäß einer Entgegenhaltung nach dem Stand der Technik, zeigt.
    Fig. 2
    ist eine Darstellung anliegender Wellen eines Mediums in auseinandergezogener Anordnung, die sich vor einem Spalt zwischen einem Druckformzylinder und einem Gummituchzylinder der Druckmaschine vorwärtsbewegen, wie in Fig. 1 gezeigt wird.
    Fig. 3
    ist eine perspektivische Ansicht einer Ausführungsform der vorliegenden Erfindung, welche einen Zylinder mit einer Rille zeigt, die sich über dessen umfängliche Oberfläche hinweg ausdehnt.
    Fig. 4
    ist eine perspektivische Ansicht einer anderen Ausführungsform der vorliegenden Erfindung, welche einen Zylinder mit einer Rille zeigt, die sich spriralenförmig um die umfängliche Oberfläche des Zylinders herum und quer darüber hinweg ausdehnt.
    Fig. 5
    ist eine perspektivische Ansicht einer weiteren Ausführungsform, welche einen Zylinder zeigt, der eine Vielzahl von abgesonderten Löchern aufweist, die an der umfänglichen Zylinderoberfläche angebracht sind.
    Fig. 6
    ist eine Seitenansicht des Zylinders gemäß Fig. 5, die Löcher zeigt, welche von der umfänglichen Zylinderoberfläche zu einem Kanal führen.
    Fig. 7
    ist eine Seitenansicht einer wiederum anderen Ausführungsform der vorliegenden Erfindung, die einen Zylinder mit einer rauhen umfänglichen Oberfläche darstellt, deren Kontur durch Maxima und Minima bestimmt werden.
    Fig. 8
    ist eine Seitenansicht einer weiteren Ausführungsform der vorliegenden Erfindung, die eine röhrenförmige, spaltfreie Druckhülse darstellt, welche eine Rille aufweist, die entlang deren inneren umfänglichen Oberfläche ausgedehnt wird.
    Fig. 9
    ist eine Seitenansicht einer anderen Ausführungsform der vorliegenden Erfindung, die eine Vielzahl von kleinen, körnigen Partikeln zeigt, die sich an der Kontaktfläche eines Zylinders befinden und eine daran montierte Druckhülse aufweisen.
    These and other objects, features and advantages of the present invention will become apparent from the following description and the accompanying drawings.
    Fig. 1
    Fig. 10 is a side graphical view of an offset printing machine showing a bulge of a tubular printing form and a tubular blanket caused by the wave of a medium, according to a prior art document.
    Fig. 2
    is an exploded view of abutting shafts of media that advance in front of a nip between a printing form cylinder and a blanket cylinder of the printing press, as shown in FIG. 1.
    Fig. 3
    Fig. 3 is a perspective view of an embodiment of the present invention, showing a cylinder with a groove extending across its circumferential surface.
    Fig. 4
    Fig. 3 is a perspective view of another embodiment of the present invention, showing a cylinder with a groove that spirally extends around and across the circumferential surface of the cylinder.
    Fig. 5
    12 is a perspective view of another embodiment showing a cylinder having a plurality of separate holes made on the circumferential cylinder surface.
    Fig. 6
    5 is a side view of the cylinder of FIG. 5, showing holes leading from the peripheral cylinder surface to a channel.
    Fig. 7
    Figure 3 is a side view of yet another embodiment of the present invention, illustrating a cylinder with a rough peripheral surface, the contour of which is determined by maxima and minima.
    Fig. 8
    Fig. 3 is a side view of another embodiment of the present invention, illustrating a tubular, gap-free pressure sleeve having a groove that extends along its inner circumferential surface.
    Fig. 9
    Figure 3 is a side view of another embodiment of the present invention showing a plurality of small, granular particles located on the contact surface of a cylinder and having a pressure sleeve mounted thereon.

    Fig. 1 zeigt ein Bahnmaterial 10, welches durch einen Spalt 12 zwischen einem Gummituchzylinder 14 hindurchführt, auf welchem ein spaltfreies, röhrenförmiges Gummituch 16 montiert ist und einem Druckzylinder 18 in einer Offset Druckmaschine. Es ist zu verstehen, daß der Druckzyiinder 18 durch einen anderen mit einem Gummituch versehenen Gummituchzylinder ersetzt werden kann, um auf beiden Seiten des Bahnmaterials 10 drucken zu können. Das Gummituch 16 überträgt Druckbilder von einer röhrenförmigen Druckform 20, welche auf einem Druckformzylinder 22 montiert ist, auf das Bahnmaterial 10.Fig. 1 shows a web material 10, which by a Passes gap 12 between a blanket cylinder 14, on which a gap-free, tubular rubber blanket 16 is mounted and an impression cylinder 18 in an offset Printing press. It should be understood that the printing cylinder 18th by another with a rubber blanket Blanket cylinder can be replaced to either side to be able to print the web material 10. The rubber blanket 16 transfers print images from a tubular printing form 20, which is mounted on a printing form cylinder 22, on the Web material 10.

    Während die Druckmaschine läuft, bilden sich Ausbuchtungen 24 und 26 im Gummituch 16. Ursache dafür sind die Wellen 25 und 27 eines Mediums, die sich vor einem Spalt 28 zwischen dem Gummituchzylinder 14 und dem Druckformzylinder 22 und dem Spalt 12 zwischen dem Gummituchzylinder 14 bzw. dem Druckzylinder 18 vorwärtsbewegen.Form while the press is running Bulges 24 and 26 in blanket 16. The cause of this is the waves 25 and 27 of a medium that are in front of one Gap 28 between the blanket cylinder 14 and the Printing form cylinder 22 and the gap 12 between the Blanket cylinder 14 or the impression cylinder 18th move forward.

    In der Druckform 20 bildet sich außerdem eine Ausbuchtung 30. Diese wird durch eine Welle eines Mediums 31, die sich vor dem Spalt 28 zwischen dem Gummituchzylinder 14 und dem Druckformzylinder 22 vorwärtsbewegt, verursacht. Die Wellen eines Mediums 25, 27 und 31 entstehen durch Luft, welche, während das Gummituch 16 auf dem Gummituchzylinder 14 montiert wird, eingeschlossen wird, bzw. während die Druckform 20 auf dem Druckformzylinder 22 montiert wird. Diese eingeschlossene Druckluft erzeugt Ausbuchtungen 24, 26, und 30 vor den Spalten 28 und 12.A also forms in the printing form 20 Bulge 30. This is caused by a wave of a Medium 31, which is in front of the gap 28 between the Blanket cylinder 14 and the printing form cylinder 22nd moving forward, caused. The waves of one Medium 25, 27 and 31 are created by air, which, during the blanket 16 is mounted on the blanket cylinder 14, is included, or while the printing form 20 on the Printing form cylinder 22 is mounted. This included Compressed air creates bulges 24, 26, and 30 in front of the Columns 28 and 12.

    Die Auswirkung der Welle eines Mediums 25 wird nun in Bezug auf Fig. 2 beschrieben. Die Welle des Mediums 25 bewegt sich kontinuierlich um den Gummituchzylinder 14 herum vorwärts, wodurch verursacht wird, daß sich das Gummituch 16 mit jeder Umdrehung relativ zum Gummituchylinder bewegt. Diese Bewegung verursacht das auf das Gummituch 16 übertragene Bild, relativ zur Druckform 20, mit jeder Umdrehung, in anderen Position zu sein. Die Entfernung zwischen jeglichem, auf das Gummituch 16 übertragene vorgegebene Bild und dem latenten Bild einer vorhergegangenen Umdrehung, welches auf das Drucktuch geprägt wurde, verursacht das Drucken zweier Bilder auf dem Bahnmaterial 10, d. h., daß Doublieren stattfindet. Diese Doubliererscheinung ist ein unerwünschter Druckfehler. Die 27 und 31 haben ähnliche Auswirkungen.The effect of the wave of a medium 25 will now be described with reference to FIG. 2. The shaft of the media 25 continuously moves forward around the blanket cylinder 14, causing the blanket 16 to move relative to the blanket cylinder with each revolution. This movement causes the image transferred to the blanket 16 to be in a different position with each revolution relative to the printing form 20. The distance between any given image transferred to the blanket 16 and the latent image of a previous revolution that has been embossed on the blanket causes two images to be printed on the web material 10, that is , doubling takes place. This duplication is an undesirable printing error. The 27 and 31 have similar effects.

    Durch das Entfernen der Wellen eines Mediums 25 und 27 wird jede relative Bewegung zwischen dem Gummituch 16 und dem Gummituchzylinder 14 eigentlich unsichtbar und verursacht somit keinen Druckfehler. Auf ähnliche Art wird durch das Entfernen der Welle eines Mediums 31, sowie anderer Wellen eines Mediums (nicht dargestellt), welche sich vor Spalten vorwärtsbewegen, die sich zwischen dem Druckformzylinder 22 und der Farbauftragswalze und Feuchtwalzen (nicht dargestellt) bilden, wird jegliche relative Bewegung zwischen der Druckform 20 und dem Druckformzylinder 22 eigentlich unsichtbar und verursacht somit keinen Druckfehler.By removing the waves of a medium 25 and 27 is any relative movement between the blanket 16 and the Blanket cylinder 14 actually invisible and caused therefore no misprint. In a similar way, the Removing the wave of a medium 31, as well as other waves a medium (not shown), which is in front of columns move forward between the forme cylinder 22nd and the inking roller and dampening rollers (not any relative movement between the printing form 20 and the printing form cylinder 22 actually invisible and therefore does not cause any Misprints.

    Die vorliegende Erfindung ist auf eine Vorrichtung zur Entfernung der Wellen eines Mediums gerichtet, welche die Ausbuchtungen im Gummituch 16 und der Druckform 20 erzeugen. Generell gesprochen, sieht die genannte Erfindung einen Weg vor, dem entlang die sich vorwärtsbewegenden Wellen eines Mediums (eingeschlossene Luft) von unterhalb der Druckhülse, d. h., des Gummituchs 16 oder der Druckform 20, entströmen können. Es wird in Erwägung gezogen, daß in dem System, welches die vorliegende Erfindung konstituiert, zum Entfernen des eingeschlossenen Mediums jegliche Art von Geometrie angewendet werden kann, die es ermöglicht, daß das Medium von einer Kontaktfläche der Druckhülse und deren korrespondierendem Zylinder, d. h. vom Gummituchzylinder 14 oder vom Druckformzylinder 22, zu einem Bereich mit einem niedereren Druck als dem hydrodynamischen Druck in den Wellen des Mediums entströmen kann.The present invention relates to a device for Removal of the waves of a medium directed which the Generate bulges in the blanket 16 and the printing form 20. Generally speaking, the mentioned invention sees a way before that along the advancing waves of a Medium (trapped air) from below the pressure sleeve, d. i.e., the blanket 16 or the printing form 20, flow out can. It is contemplated that in the system, which constitutes the present invention to Remove any media from the enclosed media Geometry can be applied, which enables the Medium from a contact surface of the pressure sleeve and its corresponding cylinder, d. H. from the blanket cylinder 14 or from the printing form cylinder 22 to an area with a lower pressure than the hydrodynamic pressure in the Waves of the medium can escape.

    Eine Ausführungsform der vorliegenden Erfindung sieht einen Zylinder vor, der mindestens eine Rille enthält, welche jegliche Art von Orientierung aufweisen kann. Fig. 3 stellt eine solche Einrichtung dar, die einen Zylinder 40 mit einer Rille 50 aufweist, welche sich über die umfängliche Oberfläche des Zylinders hinweg ausdehnt. Die Rille 50 verbindet die Kontaktstelle des Zylinders 40 und eine darauf montierte Druckhülse (nicht dargestellt) mit einem Luftkanal 60. Der Luftkanal 60 liefert Druckluft durch die Durchgänge 65, um die Druckhülse radial auszudehnen, so daß diese auf den Zylinder 40 montiert werden kann. Während die Druckmaschine läuft, kann der Luftkanal 60 jedoch zur Atmosphäre hin ventilieren, so daß die Wellen des Mediums durch die Rillen 50 in einen Niederdruckbereich entströmen können.One embodiment of the present invention provides one Cylinder in front, which contains at least one groove, which can have any kind of orientation. Fig. 3 represents is such a device that a cylinder 40 with a Has groove 50, which extends over the circumferential Extends surface of the cylinder. The groove 50 connects the contact point of the cylinder 40 and one thereon assembled pressure sleeve (not shown) with a Air duct 60. The air duct 60 delivers compressed air through the Passages 65 to radially expand the pressure sleeve so that this can be mounted on the cylinder 40. While the Printing machine is running, the air duct 60 can, however Ventilate the atmosphere so that the waves of the medium flow out through the grooves 50 into a low pressure region can.

    Fig. 4 zeigt eine verwandte Ausführungsform, worin ein Zylinder 70 vorgesehen ist, der eine Rille 80 aufweist, die sich spiralförmig um die umfängliche Oberfläche des Gummituchzylinders herum und quer darüber hinweg ausdehnt. Obwohl die Figuren 3 und 4 eine einzelne gerade und eine einzelne spiralenförmige Rille zeigen, können viele solcher Rillen, die untereinander verbunden sein können oder auch nicht, vorgesehen sein. Die vorliegende Erfindung ist außerdem nicht auf diese Konfigurationen beschränkt. Die Rillen 50 und 80 können jegliche Art von geometrischer Konfiguration und jegliche Art von Querschnitt aufweisen.Fig. 4 shows a related embodiment, wherein a Cylinder 70 is provided which has a groove 80 which spiral around the circumferential surface of the Rubber blanket cylinder around and across it. Although Figures 3 and 4 are single straight and one single spiral groove can show many such Grooves that can be connected to each other or also not be provided. The present invention is also not limited to these configurations. The Grooves 50 and 80 can be any type of geometric Configuration and any type of cross-section.

    Eine andere Ausführungsform der vorliegenden Erfindung wird in Fig. 5 gezeigt, worin ein Zylinder 90 eine Vielzahl von abgesonderten Löchern 100 aufweist, die eine Kontaktstelle des Zylinders 90 und eine daran montierte Druckhülse 105 (gezeigt in Fig. 6) mit einem Niederdruckbereich verbinden.Another embodiment of the present invention will 5, wherein a cylinder 90 is a plurality of has separate holes 100 that have a contact point of the cylinder 90 and a pressure sleeve 105 mounted thereon (shown in Fig. 6) connect to a low pressure area.

    Fig. 6 zeigt die Vielzahl von Löchern 100, die von der umfänglichen Oberfläche des Zylinders 90 in einen Kanal 110, der in den Luftkanal (nicht dargestellt) mündet, führen und welcher, während die Druckmaschine läuft, zur Atmosphäre hin ventiliert, wie dies in den Ausführungen der Figuren 3 und 4 dargestellt wird. Diese Ausführungsform ist nicht auf die Anordnung beschränkt, welche in den Figuren 5 und 6 gezeigt wird. Fast jede Art Anordnung von Löchern kann angewendet werden und die Löcher können jegliche Art geometrischer Konfiguration aufweisen.6 shows the plurality of holes 100 formed by the circumferential surface of the cylinder 90 in a channel 110, which opens into the air duct (not shown), lead and which, while the printing press is running, to the atmosphere ventilated, as in the embodiments of Figures 3 and 4 is shown. This embodiment is not based on that Arrangement limited, which shown in Figures 5 and 6 becomes. Almost any arrangement of holes can be used and the holes can be any kind of geometric Have configuration.

    Fig. 7 stellt außerdem eine weitere Ausführungsform der vorliegenden Erfindung dar. Diese Ausführungsform sieht einen Zylinder vor, welcher eine rauhe umfängliche Oberfläche mit einer von Maxima 130 und Minima 140 bestimmten Kontur aufweist. Die Maxima 130 und Minima 140 können aus einer Vielzahl von Kordeln oder Aufrauhungen geformt sein. Die Minima 140 verbinden die Kontaktstelle des Zylinders 120 und eine daran montierte Druckhülse 150 mit einem Bereich, welcher einen niedereren Druck aufweist, als der der sich vorwärtsbewegenden Welle eines Mediums. Die Druckhülse 150 reitet auf dem Maxima 130 und ermöglicht somit das Entströmen der eingeschlossenen Wellen eines Mediums über die Minima 140.7 also shows another embodiment of the present invention. This embodiment provides a cylinder which has a rough circumferential Surface with one of Maxima 130 and Minima 140 has a certain contour. The Maxima 130 and Minima 140 can be made from a variety of cords or roughened be shaped. The Minima 140 connect the contact point of the Cylinder 120 and a pressure sleeve 150 mounted thereon an area which has a lower pressure than that of the advancing wave of a medium. The Pressure sleeve 150 rides on the Maxima 130 and enables thus the escape of the enclosed waves Medium about the Minima 140.

    Fig. 8 zeigt eine weitere Ausführungsform der vorliegenden Erfindung. In dieser Ausführungsform ist eine rohrförmige, spaltfreie auf einem Zylinder 210 montierte Druckhülse 200 vorgesehen. Die Druckhülse 200 weist eine Rille 220 auf, welche sich entlang ihrer inneren umfänglichen Oberfläche ausdehnt. Die Rille 220 verbindet die Kontaktfläche der Druckhülse 200 und des Zylinders 210 mit einem Niederdruckbereich und sieht einen Weg vor, dem entlang die eingeschlossenen Wellen eines Mediums entströmen können. Wie dies bei den Rillen 50 und 60 in den Ausführungsformen, welche in den Figuren 3 und 4 dargestellt werden der Fall ist, kann die Rille 220 jegliche Art geometrische Konfiguration und jegliche Art von Querschnitt aufweisen. Es können außerdem eine Vielzahl solcher Rillen, die untereinander verbunden sein können oder auch nicht, vorgesehen sein. Die innere umfängliche Oberfläche der Druckhülse 200 kann ebenfalls eine rauhe Kontur aufweisen, die durch Maxima und Minima bestimmt ist, und in der die eingeschlossenen Wellen des Mediums durch die Minima entströmen.8 shows another embodiment of the present Invention. In this embodiment, a tubular, gap-free pressure sleeve 200 mounted on a cylinder 210 intended. The pressure sleeve 200 has a groove 220, which extend along their inner circumferential surface expands. The groove 220 connects the contact surface of the Pressure sleeve 200 and the cylinder 210 with a Low pressure area and provides a path along which the enclosed waves of a medium can escape. How this with the grooves 50 and 60 in the embodiments, which are shown in Figures 3 and 4 the case the groove 220 can be any type of geometric Configuration and any type of cross-section. It can also have a variety of such grooves that may or may not be connected to each other, be provided. The inner circumferential surface of the Pressure sleeve 200 can also have a rough contour, which is determined by maxima and minima, and in which the enclosed waves of the medium through the minima escape.

    Fig. 9 zeigt noch eine weitere Ausführungsform der vorliegenden Erfindung, worin eine auf einem Zylinder 260 montierte röhrenförmige spaltfreie Druckhülse 250 vorgesehen ist. In dieser Ausführungsform wird eine fremde Substanz, d. h. kleine, körnige Partikel 270, wie z. B. Talkum, an der Kontaktstelle der Druckhülse 250 und dem Zylinder 260 eingeführt. Die Druckhülse 250 ruht auf den kleinen, körnigen Partikeln 270, wodurch es dem eingeschlossenen Medium ermöglicht wird, über die zwischen den Partikeln geformten Zwischenräume 280 in einen Niederdruckbereich zu entströmen. Die kleinen körnigen Partikel 270 können jegliche Art von geometrischer Konfiguration aufweisen, so daß es durch die zwischen den Partikeln geformeten Zwischenräume 280 ermöglicht wird, daß das eingeschlossene Medium in einen Niederdruckbereich entströmen kann.FIG. 9 shows yet another embodiment of the present invention, wherein a tubular gapless pressure sleeve 250 mounted on a cylinder 260 is provided. In this embodiment, a foreign substance, ie small, granular particles 270, such as. B. talc, introduced at the contact point of the pressure sleeve 250 and the cylinder 260. The pressure sleeve 250 rests on the small, granular particles 270, which enables the enclosed medium to flow into a low-pressure region via the spaces 280 formed between the particles. The small granular particles 270 can have any type of geometric configuration, so that the spaces 280 formed between the particles allow the enclosed medium to flow into a low pressure region.

    Es ist zu verstehen, daß für jede hierin beschriebene Ausführungsform, der Bereich, in welchen das eingeschlossene Medium fließt, entweder die Atmosphäre, ein erzeugtes Vakuum oder jeglicher andere Bereich sein könnte, der einen niedereren Druck aufweist als den Druck der sich vorwärts bewegenden Wellen eines Mediums.It is understood that for any described herein Embodiment, the area in which the included Medium flows, either the atmosphere, a created one Vacuum or any other area that could be one has lower pressure than the pressure going forward moving waves of a medium.

    Während die vorliegende Erfindung die Fähigkeit für verschiedene Modifizierungen und alternierende Konstruktionen aufweist, wird nicht beabsichtigt, die Erfindung auf hierin offenbarte, vorgeschriebene Ausführungsformen zu beschränken. Es wird eher beabsichtigt, daß alle Modifizierungen und alternative Konstruktionen berücksichtigt werden, die innerhalb der Überlegungen und des Anwendungsbereichs der Erfindung fallen, wie dies in den Ansprüchen ausgedrückt wird.While the present invention has the ability for various modifications and alternating Having constructions is not intended to Invention to mandatory disclosed herein Limit embodiments. It is rather intended that all modifications and alternative constructions be taken into account within the considerations and fall within the scope of the invention as shown in the Claims is expressed.

    Claims (29)

    1. Apparatus for reducing material bulging (24, 26) on a gapless tubular printing sleeve (16, 20) in an offset printing machine, the material bulging (24, 26) being caused by at least one advancing wave (25, 27) of a medium exerting a particular pressure on a cylinder (14, 22) which is fashioned to receive the printing sleeve (16, 20) for mounting on its circumferential surface, characterized in that a device (50, 80, 100; 130, 140; 220, 270) extending over the width of the cylinder (14, 22, 40, 70, 90, 120, 210, 260) is provided in order to connect an interface of the cylinder (14, 22, 40, 70, 90, 120, 210, 260) and of the printing sleeve (16, 20, 105, 200, 250) to a region which has a lower pressure than that of the wave (25, 27) of the medium in order to allow the wave (25, 27) of the medium, trapped at the interface and advancing in front of the nip between the cylinder (14, 22, 40, 70, 90, 120, 210, 260) and an adjacent cylinder (18, 22), to escape into the region of low pressure.
    2. Apparatus according to Claim 1, wherein the connecting device (50, 80, 100; 130, 140; 220, 270) comprises the cylinder (14, 22, 40, 70, 90, 120, 210, 260) which has at least one groove (50) which extends along its circumferential surface and via which the trapped wave (25, 27) of a medium escapes.
    3. Apparatus according to Claim 1, wherein at least one groove (50) extends transversely over the circumferential surface of the cylinder (40).
    4. Apparatus according to Claim 2, wherein at least one groove (80) extends helically around the circumferential surface of the cylinder (70) and beyond the circumferential surface of the cylinder (70).
    5. Apparatus according to Claim 1, wherein the connecting device (50, 80, 100; 130, 140; 220, 270) comprises the cylinder (40, 70) having a multiplicity of grooves (50, 80) which extend along its circumferential surface and by means of which the trapped wave (25, 27) of a medium flows out.
    6. Apparatus according to Claim 5, wherein the multiplicity of grooves (50, 80) are independent of one another.
    7. Apparatus according to Claim 5, wherein the multiplicity of grooves (50, 80) are connected to one another.
    8. Apparatus according to Claim 1, wherein the connecting device (50, 80, 100; 130, 140; 220, 270) comprises the cylinder (90) which is provided with a multiplicity of holes (100) through which the trapped wave (25, 27) of a medium escapes.
    9. Apparatus according to Claim 8, wherein the multiplicity of holes (100) lead from the contact surface of the cylinder (90) and the printing sleeve (105) to a channel (110).
    10. Apparatus according to Claim 1, wherein the connecting device (50, 80, 100; 130, 140; 220, 270) comprises the cylinder (120) which has a circumferential surface with a rough contour which is determined by maxima (130) and minima (140), and wherein the printing sleeve (150) rests on the maxima (130) and the trapped wave (25, 27) of a medium escapes via the minima (140).
    11. Apparatus according to Claim 10, wherein the maxima (130) and minima (140), which determine the rough contour of the circumferential surface of the cylinder (120), are formed by a multiplicity of knurls or wrinkles.
    12. Apparatus according to Claim 1, wherein the connecting device (50, 80, 100; 130, 140; 220, 270) comprises the printing sleeve (210) having at least one groove (220) which extends along its inner circumferential surface and by means of which the trapped wave (25, 27) of a medium escapes.
    13. Apparatus according to Claim 12, wherein at least one groove (220) extends transversely across the inner circumferential surface of the printing sleeve.
    14. Apparatus according to Claim 12, wherein at least one groove (80) extends helically around the inner circumferential surface of the printing sleeve and beyond the latter.
    15. Apparatus according to Claim 1, wherein the connecting device (50, 80, 100; 130, 140; 220, 270) comprises the printing sleeve (200) which has a multiplicity of grooves (50, 80, 220) which extend along the inner circumferential surface of the printing sleeve (200) and by means of which the trapped wave (25, 27) of a medium escapes.
    16. Apparatus according to Claim 15, wherein the multiplicity of grooves (50, 80, 220) are independent of one another.
    17. Apparatus according to Claim 15, wherein the multiplicity of grooves (50, 80, 220) are connected to one another.
    18. Apparatus according to Claim 1, wherein the connecting device (50, 80, 100; 130, 140; 220, 270) comprises the printing sleeve (150) which has an inner circumferential surface with a rough contour which is determined by maxima (130) and minima (140) and by means of whose valleys the trapped wave (25, 27) of a medium escapes.
    19. Apparatus according to Claim 18, wherein the maxima (140) and minima (130), which determine the rough contour of the inner circumferential surface of the printing sleeve (150), are formed from a multiplicity of knurls or wrinkles.
    20. Apparatus according to Claim 1, wherein the connecting device (50, 80, 100; 130, 140; 220, 270) comprises a multiplicity of small granular particles (270) which have intermediate spaces (280) by means of which the trapped wave (25, 27) of a medium escapes.
    21. Apparatus according to Claim 20, wherein the multiplicity of small granular particles (270) consist of talc.
    22. Apparatus according to Claim 1, wherein the printing sleeve (16, 20, 105, 150, 200, 250) is a tubular printing forme.
    23. Apparatus according to Claim 1, wherein the printing sleeve (16, 20, 105, 150, 200, 250) is a tubular rubber blanket.
    24. Apparatus according to Claim 1, wherein the low-pressure region is the atmosphere.
    25. Apparatus according to Claim 1, wherein the low-pressure region is a generated vacuum.
    26. Apparatus according to Claim 1, wherein the low-pressure region is an air channel (60, 65) which is disposed on the cylinder (40, 70, 90) and feeds compressed air radially outwards in order to expand the printing sleeve (16, 20, 105, 150, 200, 250) while the latter is mounted on the cylinder (40, 70, 90), and which is vented to the atmosphere during normal operation of the printing machine.
    27. Apparatus according to Claim 1, wherein the adjacent cylinder (22) is a printing forme cylinder.
    28. Apparatus according to Claim 1, wherein the adjacent cylinder (18) is an impression cylinder.
    29. Apparatus according to Claim 1, wherein the adjacent cylinder (14) is a blanket cylinder.
    EP93119864A 1993-01-22 1993-12-09 Device for reducing material bulging on tubular printing sleeve Expired - Lifetime EP0607552B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    US745393A 1993-01-22 1993-01-22
    US7453 1993-01-22

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    EP0607552A2 EP0607552A2 (en) 1994-07-27
    EP0607552A3 EP0607552A3 (en) 1995-05-03
    EP0607552B1 true EP0607552B1 (en) 1998-03-11

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    US (1) US6205923B1 (en)
    EP (1) EP0607552B1 (en)
    JP (1) JP3370167B2 (en)
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    Families Citing this family (15)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19503095C2 (en) * 1995-02-01 1999-12-16 Roland Man Druckmasch Device for clamping a sleeve on a printing unit cylinder
    DE19527761C2 (en) * 1995-07-28 2003-02-27 Roland Man Druckmasch Printing roller for attaching a printing sleeve
    DE19536764C2 (en) * 1995-10-02 1998-12-03 Tampoprint Gmbh Tampon roller
    DE19602307A1 (en) * 1996-01-23 1997-07-24 Roland Man Druckmasch Printing machine with coated cylindrical film written by infrared laser
    DE19602289A1 (en) * 1996-01-23 1997-07-24 Roland Man Druckmasch High resolution print cylinder
    DE19911965C2 (en) * 1999-03-17 2003-04-30 Wifag Maschf Printing form, process for its production and printing forme cylinder for a wet offset printing
    DE10039744B4 (en) * 2000-08-16 2008-06-05 Hueck Folien Gesellschaft M.B.H. Clamping cylinder for holding and fixing a cylindrical embossing mold with a structured surface
    EP1523409B1 (en) * 2002-07-19 2011-03-30 Koenig & Bauer Aktiengesellschaft Method for reducing vibrations on rotating parts, and vibration-damped rotating part
    ATE470570T1 (en) * 2005-07-18 2010-06-15 Hueck Folien Gmbh PRINT CYLINDER WITH REMOVABLE EMBOSSING MOLD
    DE102006010551A1 (en) * 2006-03-07 2007-09-13 Maschinenfabrik Wifag relief element
    DE102006014968A1 (en) * 2006-03-31 2007-10-04 Man Roland Druckmaschinen Ag Rotary body of a web-fed printing machine
    JP5230932B2 (en) * 2006-12-27 2013-07-10 三菱重工印刷紙工機械株式会社 Printing cylinder sleeve, printing machine, and inner peripheral layer attaching / detaching method of printing cylinder sleeve
    JP2009285861A (en) * 2008-05-27 2009-12-10 Masayuki Izume Printing plate and press
    US8307764B2 (en) * 2009-02-17 2012-11-13 Luminite Products Corporation Printing sleeve
    DE102014101432B3 (en) * 2014-02-05 2014-12-24 CONPRINTA GmbH & Co. KG Printing unit for a flexographic printing machine

    Family Cites Families (18)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CH122368A (en) * 1925-09-22 1927-09-16 Maschf Augsburg Nuernberg Ag Form cylinder for rotogravure printing machines.
    CH345023A (en) * 1955-03-30 1960-03-15 Brackenburry Abell George Edmo Rotary printing press
    DE1292958B (en) * 1962-12-01 1969-04-17 Saueressig Kg Geb Roller, especially printing roller for textile and paper printing
    US3640218A (en) * 1970-06-25 1972-02-08 Thomas K Allison Seal assembly for sleeve-type gravure rolls
    GB1401695A (en) 1972-07-14 1975-07-30 Precision Printing Equipment W Cylinder for a printing machine and a method of securing a printing plate to a printing cylinder
    GB1483371A (en) * 1974-09-26 1977-08-17 Buckley Ltd M Printing processes and apparatus
    IN146438B (en) * 1976-01-08 1979-06-02 Strachan & Henshaw Ltd
    US4056057A (en) * 1976-02-27 1977-11-01 Livermore And Knight Co., Inc. Vacuum printing cylinder construction
    DE2945280C2 (en) * 1979-11-09 1981-06-11 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Cylinders for rotary printing machines
    DE3336193C2 (en) * 1983-10-05 1986-02-27 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Blanket for a rotary offset printing press
    EP0196443B1 (en) * 1985-03-29 1990-05-23 Saueressig Gmbh & Co. Intaglio printing cylinder comprising a core and a detachable sleeve
    EP0278017A1 (en) * 1987-02-07 1988-08-17 Saueressig Gmbh & Co. Intaglio printing cylinder comprising a core and a detachable sleeve
    DE8532300U1 (en) * 1985-11-15 1986-01-02 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Roller tube for printing machines with an exchangeable jacket tube
    DE3543704A1 (en) * 1985-12-11 1987-06-19 Md Papierfabrik Pasing Nicolau DEVICE AND METHOD FOR PRINTING A TRAIN
    DE3633155A1 (en) * 1986-09-30 1988-04-07 Saueressig & Co Impression cylinder, in particular for the flexographic printing method
    JPH0818423B2 (en) * 1991-03-26 1996-02-28 三菱重工業株式会社 Offset rotary press cylinder
    US5245923A (en) * 1992-07-07 1993-09-21 Heidelberg Harris Inc. Printing press with movable printing blanket
    DE4432816A1 (en) * 1994-09-15 1996-03-21 Roland Man Druckmasch Printing roller for channelless printing

    Also Published As

    Publication number Publication date
    EP0607552A3 (en) 1995-05-03
    US6205923B1 (en) 2001-03-27
    EP0607552A2 (en) 1994-07-27
    DE4341262C2 (en) 1999-04-08
    JP3370167B2 (en) 2003-01-27
    DE59308252D1 (en) 1998-04-16
    JPH071716A (en) 1995-01-06
    DE4341262A1 (en) 1994-07-28

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