EP0699528B1 - Sheet transfer cylinder for a printing machine - Google Patents

Sheet transfer cylinder for a printing machine Download PDF

Info

Publication number
EP0699528B1
EP0699528B1 EP95112126A EP95112126A EP0699528B1 EP 0699528 B1 EP0699528 B1 EP 0699528B1 EP 95112126 A EP95112126 A EP 95112126A EP 95112126 A EP95112126 A EP 95112126A EP 0699528 B1 EP0699528 B1 EP 0699528B1
Authority
EP
European Patent Office
Prior art keywords
drum
drum body
sheet guiding
sheet
gripper
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
EP95112126A
Other languages
German (de)
French (fr)
Other versions
EP0699528A3 (en
EP0699528A2 (en
Inventor
Harald Bayer
Klemens Kemmerer
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6527148&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0699528(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0699528A2 publication Critical patent/EP0699528A2/en
Publication of EP0699528A3 publication Critical patent/EP0699528A3/en
Application granted granted Critical
Publication of EP0699528B1 publication Critical patent/EP0699528B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers

Definitions

  • the invention relates to one with at least two gripper bridges provided sheet-guiding drum body for a printing press, the the sheet transport within the printing press, preferably between the printing units of a rotary printing press.
  • a device of this type is known from DE-AS 1 102 767. After that there are one or two (with double-sized drum with two bow-carrying lateral surfaces) gripper bridges on a sheet-guiding Drum arranged.
  • the gripper bar is with one rectangular cross-section and causes a rotation uniform vacuum between the sheet and the associated Sheet guiding device (envelope body).
  • the gripper bar sucks a part of the air from the sheet guide, so that the Arch against normal arc pressure from the inside of the arch the sheet guiding device is pressed.
  • the disadvantage here is that after handing over the sheet from the sheet-guiding Drum to the impression cylinder the rear area of the sheet due to the reduced vacuum no longer on the sheet guiding device can be managed, i.e. the bow lifts off.
  • the Lifting off the arch in the rear area leads to double the lead in front of the printing gap formed by the impression cylinder and blanket cylinder.
  • Another drum is known from DE 3 602 084 C2 between at least two gripper bars within the drum circumference has guiding surfaces designed essentially as secants.
  • the guide surfaces should serve as air scoops, which in the Print mode generate an air jam that the respective sheet with keeps the printed surface away from the guiding surfaces and thus one to ensure lubrication and doubling-free sheet guidance.
  • the Baffles can also be used with an outside facing surface Arranged sheet guide device realize the sheet guide.
  • the guiding surfaces also serve, which are also provided by baffles can be formed to guide the trailing edge of the sheet upon delivery of the sheet to the subsequent printing cylinder.
  • a disadvantage of these designs is that the drum through Design has a high mass. In printing operation occur dependent on the number of rapier bridges individual centrifugal forces adversely affect the fit of the passport. Furthermore, the desired dynamic pressure depending on the machine speed and thus subject to fluctuations.
  • US-A-5172634 is a transfer drum for a sheet-fed printing machine known, the one depending on the sheet format adjustable drum-shaped curved Has lateral surface and an arch with two gripper bridges in double Clamshell leads at the front and rear edge lying on the lateral surface.
  • the object of the invention is to provide a sheet-guiding drum body to create low mass, which has a high rigidity, so that an exact fit is achieved and the drum body even one that acts on the arch and is generated by guide surfaces, Avoids air congestion.
  • the drum body is achieved through the arrangement of communicating Breakthroughs in the side surfaces a noticeable reduction in mass.
  • the rigidity is increased by the design, which in printing operation to lower deflection and thus to an improved registration leads.
  • the mass reduction lowers the manufacturing costs, the drum body in gray cast iron, nodular cast iron or light metal cast iron, in particular cast aluminum is produced.
  • the in the Communicating breakthroughs arranged on the side surfaces are such dimensioned that no air congestion caused by "light surfaces" the bow can work.
  • the air flow flows when the Drum body through the openings against the sheet running direction through, so that the arc essentially only by centrifugal moments is led. It was found that no wave appearance occur on the arch, which otherwise the arch in the rear Let the area "flutter". The arch becomes quiet on the neighboring one Guided sheet guide.
  • the drum body provided with communicating openings is in terms of its use, not on a sheet-carrying transfer drum limited to printing units. Rather, the Drum body also as delivery drum, intermediate drum, e.g. in Extension modules etc.
  • a sheet-guiding drum body 1 is in an offset rotary printing machine a printing cylinder of the previous printing unit downstream and the drum body 1 is a printing cylinder subordinate to another printing unit.
  • the drum body 1 (Fig. 1 and 2) is related to a single-sized impression cylinder with one designed twice the diameter and thus carries two gripper bridges 4.
  • the gripper bridges 4 are on the circumference of the drum body 1 arranged symmetrically (180 ° offset). Every grab bridge 4 consists of a gripper shaft, grippers and at least one Gripper impact bar.
  • the gripper bar supports for support blocks assigned to each gripper for the single gripper support.
  • the drum body 1 is with its two drum pins 5 rotatably received in a storage of a frame.
  • the basic shape of the drum body 1 is based on a prism.
  • a double-sized drum body 1 (according to FIG. 1 and 2) there is essentially a cuboid, at the base and Cover surface the gripper bridges 4 are fixed.
  • the gripper bars 4 are therefore symmetrical (offset by 180 °) on this version Scope arranged. They are on the faces of the cuboid already mentioned drum pin 5 in the axis of rotation of the drum body 1 arranged.
  • the side surfaces of the cuboid have openings 3, which are interconnected.
  • the side faces can be flat or slightly curved.
  • the double size Drum body 1 is in the present example as a hollow profile 2 trained, it can also be made of solid material or one Structure, e.g.
  • Honeycomb structure On the side surfaces are a plurality of openings 3 in the hollow profile 2, the Solid material or the structure introduced, which is almost congruent or are also offset on each side surface. Regardless of the size or location, the openings 3 of the in Sheet transport direction front side wall with the rear side wall communicating. To stiffen the axis of rotation of the double-sized drum body 1 is an axial in the hollow profile 2 continuous web 6 arranged, which merges into the drum pin 5.
  • a triple-sized drum body 1 is essentially with his prismatic shape by three radiating (star-shaped) in the Axis of rotation of the drum body 2 united cuboids formed.
  • the axis of rotation is preferably formed by the web 6.
  • the Cover surfaces of the cuboids are in turn assigned to the gripper bridges 4, which is offset by 120 ° in the triple-sized drum body 2 are arranged. Further training as a triple-sized drum body 1 with a prismatic shape is replaced by a trigonal prism, also called triangular prism (Fig. 5).
  • the gripper bridges 4 are in turn symmetrically offset by 120 ° on the circumference arranged.
  • the side surfaces have communicating openings 3 on.
  • the triple-sized drum body 1 3 and 5 is again in the present example executed as a hollow profile 2.
  • a four times larger drum body 1 is essentially a prismatic one Form by four radiating (star-shaped) in the Rotation axis united cuboid (Fig. 4). Alternatively offers training as a tetragonal prism (square prism) on (not shown).
  • the gripper bridges 4 are again symmetrical arranged on the circumference (offset by 90 °).
  • the drum body 1 is as Hollow profile executed and has an in in the region of the axis of rotation the drum pin 5 transition web 6.
  • breakthroughs 3 are arranged in each cuboid.
  • the Side surfaces themselves can again be flat or curved be.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

The sheet-guiding drum body is for a printing machine, and is located in side frames by face-side drum pins. It has at least two symmetrically arranged gripper bridges on the periphery. The drum body (1) is formed by one or more composed prismatic shapes, on the base and/or cover surface the gripper bridges (4) with communicating breakthroughs (3) are arranged. With a double large drum body with two gripper bridges displaced through 180 deg. the prismatic shape consists of a cuboid. With a three times large drum body with three gripper bridges displaced through 120 deg. the prismatic shape consists of a trigonal prism.

Description

Die Erfindung betrifft einen mit mindestens zwei Greiferbrücken versehenen bogenführenden Trommelkörper für eine Druckmaschine, der dem Bogentransport innerhalb der Druckmaschine, vorzugsweise zwischen den Druckwerken einer Rotationsdruckmaschine, dient.The invention relates to one with at least two gripper bridges provided sheet-guiding drum body for a printing press, the the sheet transport within the printing press, preferably between the printing units of a rotary printing press.

Eine Vorrichtung dieser Art ist aus der DE-AS 1 102 767 bekannt. Danach sind eine oder auch zwei (bei doppeltgroßer Trommel mit zwei bogentragenden Mantelflächen) Greiferbrücken an einer bogenführenden Trommel angeordnet. Die Greiferaufschlagleiste ist mit einem rechteckigen Querschnitt ausgeführt und bewirkt bei Rotation einen gleichmäßigen Unterdruck zwischen dem Bogen und der zugeordneten Bogenleiteinrichtung (Hüllkörper). Die Greiferaufschlagleiste saugt einen Teil der Luft von der Bogenleiteinrichtung ab, so daß der Bogen durch den normalen Luftdruck von der Bogeninnenseite gegen die Bogenleiteinrichtung gedrückt wird.A device of this type is known from DE-AS 1 102 767. After that there are one or two (with double-sized drum with two bow-carrying lateral surfaces) gripper bridges on a sheet-guiding Drum arranged. The gripper bar is with one rectangular cross-section and causes a rotation uniform vacuum between the sheet and the associated Sheet guiding device (envelope body). The gripper bar sucks a part of the air from the sheet guide, so that the Arch against normal arc pressure from the inside of the arch the sheet guiding device is pressed.

Nachteilig ist dabei, daß nach Übergabe des Bogens von der bogenführenden Trommel zum Druckzylinder der hintere Bereich des Bogens infolge des abgebauten Unterdruckes nicht mehr an der Bogenleiteinrichtung geführt werden kann, d.h. der Bogen hebt ab. Das Abheben des Bogens im hinteren Bereich führt zum Vorlaufdoublieren vor dem vom Druckzylinder und Gummituchzylinder gebildeten Druckspalt.The disadvantage here is that after handing over the sheet from the sheet-guiding Drum to the impression cylinder the rear area of the sheet due to the reduced vacuum no longer on the sheet guiding device can be managed, i.e. the bow lifts off. The Lifting off the arch in the rear area leads to double the lead in front of the printing gap formed by the impression cylinder and blanket cylinder.

Aus der DE 3 602 084 C2 ist eine weitere Trommel bekannt, die zwischen mindestens zwei Greiferbrücken innerhalb des Trommelumfanges im wesentlichen als Sekante ausgebildete Leitflächen besitzt. Die Leitflächen sollen als Luftschaufeln dienen, welche im Druckbetrieb einen Luftstau erzeugen, der den jeweiligen Bogen mit der bedruckten Fläche von den Leitflächen fernhält und somit eine schmier- und doublierfreie Bogenführung gewährleisten soll. Die Leitflächen können auch mit einer außerhalb zur Mantelfläche der Trommel angeordneten Bogenleiteinrichtung die Bogenführung realisieren. Ebenso dienen die Leitflächen, die auch durch Leitbleche gebildet sein können, zur Führung der Bogenhinterkante bei Übergabe des Bogens an den nachfolgenden Druckzylinder.Another drum is known from DE 3 602 084 C2 between at least two gripper bars within the drum circumference has guiding surfaces designed essentially as secants. The guide surfaces should serve as air scoops, which in the Print mode generate an air jam that the respective sheet with keeps the printed surface away from the guiding surfaces and thus one to ensure lubrication and doubling-free sheet guidance. The Baffles can also be used with an outside facing surface Arranged sheet guide device realize the sheet guide. The guiding surfaces also serve, which are also provided by baffles can be formed to guide the trailing edge of the sheet upon delivery of the sheet to the subsequent printing cylinder.

Es ist weiterhin im Druckmaschinenbau bekannt, bogenführende Trommeln mit zwei Greiferbrücken als prismatische Körper in Form eines Quaders auszubilden. An Grund- und Deckfläche des Quaders sind die Greiferbrücken angeordnet und die vollflächig ausgeführten Seitenflächen stellen die Leitflächen dar. An den Stirnseiten sind Trommelzapfen angeordnet, welche gestellseitig gelagert sind. Abhängig von dem zu verarbeitenden Bedruckstoff können am Quader zwei kreissegmentförmige Trommelkappen angeordnet werden, die wiederum eine zylindrische Trommel bilden.It is also known in printing press construction, sheet leading Drums with two gripper bars in the form of a prismatic body of a cuboid. On the base and top surface of the cuboid the gripper bridges are arranged and the full-area ones Side surfaces represent the guiding surfaces. On the end faces are Drum pins arranged, which are mounted on the frame side. Depending on the substrate to be processed, the cuboid two circular segment-shaped drum caps can be arranged again form a cylindrical drum.

Nachteilig bei diesen Ausführungen ist, daß die Trommel durch ihre Bauart eine hohe Masse aufweist. Bei Druckbetrieb treten abhängig von der Anzahl der Greiferbrücken Einzelfliehkräfte auf, die sich nachteilig auf die Paßerhaltigkeit auswirken. Weiterhin ist der gewünschte Staudruck von der Maschinengeschwindigkeit abhängig und somit Schwankungen unterworfen. A disadvantage of these designs is that the drum through Design has a high mass. In printing operation occur dependent on the number of rapier bridges individual centrifugal forces adversely affect the fit of the passport. Furthermore, the desired dynamic pressure depending on the machine speed and thus subject to fluctuations.

Gemäß der US-A-5172634 ist eine Umführtrommel für eine bogenverarbeitende Druckmaschine bekannt, die eine vom Bogenformat abhängig verstellbare trommelförmig gekrümmte Mantelfläche aufweist und einen Bogen mit zwei Greiferbrücken im doppelten Greiferschluß an Vorder- und Hinterkante auf der Mantelfläche liegend führt. According to US-A-5172634 is a transfer drum for a sheet-fed printing machine known, the one depending on the sheet format adjustable drum-shaped curved Has lateral surface and an arch with two gripper bridges in double Clamshell leads at the front and rear edge lying on the lateral surface.

Aufgabe der Erfindung ist es einen bogenführenden Trommelkörper mit geringer Masse zu schaffen, der eine hohe Steifigkeit aufweist, so daß eine exakte Paßerhaltigkeit erzielt wird und der Trommelkörper selbst einen auf den Bogen wirkenden, von Leitflächen erzeugten, Luftstau vermeidet.The object of the invention is to provide a sheet-guiding drum body to create low mass, which has a high rigidity, so that an exact fit is achieved and the drum body even one that acts on the arch and is generated by guide surfaces, Avoids air congestion.

Gelöst wird die Aufgabe durch die kennzeichnenden Merkmale des Hauptanspruches. Weiterbildungen ergeben sich aus den Unteransprüchen. The task is solved by the characteristic features of the Main claim. Further training results from the subclaims.

Der Trommelkörper erreicht durch die Anordnung von kommunizierenden Durchbrüchen in den Seitenflächen eine spürbare Massereduzierung. Die Steifigkeit wird durch die Bauform erhöht, was im Druckbetrieb zu geringerer Durchbiegung und damit zu einer verbesserten Passerhaltigkeit führt. Die Massereduzierung senkt die Herstellungskosten, wobei der Trommelkörper in Grauguß, Sphäroguß oder Leichmetallguß, insbesondere Aluminiumguß hergestellt ist. Die in den Seitenflächen angeordneten kommunizierenden Durchbrüche sind derart dimensioniert, daß kein von "Leichtflächen" bewirkter Luftstau auf den Bogen wirken kann. Die Luftströmung fließt bei Rotation des Trommelkörpers durch die Durchbrüche entgegen der Bogenlaufrichtung hindurch, so daß der Bogen im wesentlichen nur noch durch Zentrifugalmomente geführt ist. Es wurde gefunden, daß keine Wellenerscheinung am Bogen auftreten, die sonst den Bogen im hinteren Bereich "flattern" lassen. Der Bogen wird ruhig an der benachbarten Bogenleiteinrichtung geführt.The drum body is achieved through the arrangement of communicating Breakthroughs in the side surfaces a noticeable reduction in mass. The rigidity is increased by the design, which in printing operation to lower deflection and thus to an improved registration leads. The mass reduction lowers the manufacturing costs, the drum body in gray cast iron, nodular cast iron or light metal cast iron, in particular cast aluminum is produced. The in the Communicating breakthroughs arranged on the side surfaces are such dimensioned that no air congestion caused by "light surfaces" the bow can work. The air flow flows when the Drum body through the openings against the sheet running direction through, so that the arc essentially only by centrifugal moments is led. It was found that no wave appearance occur on the arch, which otherwise the arch in the rear Let the area "flutter". The arch becomes quiet on the neighboring one Guided sheet guide.

Der mit kommunizierenden Durchbrüchen versehene Trommelkörper ist hinsichtlich seines Einsatzes nicht auf eine bogenführende Umführtrommel bei Druckwerken beschränkt. Vielmehr eignet sich der Trommelkörper auch als Auslegertrommel, Zwischentrommel, z.B. in Verlängerungsmodulen etc.The drum body provided with communicating openings is in terms of its use, not on a sheet-carrying transfer drum limited to printing units. Rather, the Drum body also as delivery drum, intermediate drum, e.g. in Extension modules etc.

Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden. Dabei zeigen:

Fig. 1
einen Trommelkörper für zwei Greiferbrücken im Schnitt A-A,
Fig. 2
den Trommelkörper gemäß Fig. 1 in Vorderansicht,
Fig. 3
einen Trommelkörper für drei Greiferbrücken in Sternbauform,
Fig. 4
einen Trommelkörper für vier Greiferbrücken in Sternbauform,
Fig. 5
einen Trommelkörper für drei Greiferbrücken in Dreieckbauform.
The invention will be explained in more detail using an exemplary embodiment. Show:
Fig. 1
a drum body for two gripper bars in section AA,
Fig. 2
1 in front view,
Fig. 3
a drum body for three star-shaped gripper bridges,
Fig. 4
a drum body for four star-shaped gripper bridges,
Fig. 5
a drum body for three gripper bars in a triangular design.

Ein bogenführender Trommelkörper 1 ist in einer Offsetrotationsdruckmaschine einem Druckzylinder des vorhergehenden Druckwerkes nachgeordnet und dem Trommelkörper 1 ist ein Druckzylinder eines weiteren Druckwerkes nachgeordnet. Der Trommelkörper 1 (Fig. 1 und 2) ist, bezogen auf einen einfachgroßen Druckzylinder mit einem zweifachgroßen Durchmesser ausgeführt und trägt somit zwei Greiferbrücken 4. Am Umfang des Trommelkörpers 1 sind die Greiferbrücken 4 symmetrisch verteilt angeordnet (180° versetzt). Jede Greiferbrücke 4 besteht aus einer Greiferwelle, Greifern sowie mindestens einer Greiferaufschlagleiste. Die Greiferaufschlagleiste trägt für jeden Greifer zugeordnete Auflageklötzchen für die Einzelgreiferauflage. Der Trommelkörper 1 ist mit seinen beiden Trommelzapfen 5 drehbar in jeweils einer Lagerung eines Gestells aufgenommen.A sheet-guiding drum body 1 is in an offset rotary printing machine a printing cylinder of the previous printing unit downstream and the drum body 1 is a printing cylinder subordinate to another printing unit. The drum body 1 (Fig. 1 and 2) is related to a single-sized impression cylinder with one designed twice the diameter and thus carries two gripper bridges 4. The gripper bridges 4 are on the circumference of the drum body 1 arranged symmetrically (180 ° offset). Every grab bridge 4 consists of a gripper shaft, grippers and at least one Gripper impact bar. The gripper bar supports for support blocks assigned to each gripper for the single gripper support. The drum body 1 is with its two drum pins 5 rotatably received in a storage of a frame.

Die Grundform des Trommelkörpers 1 geht von einem Prisma aus. Bei der Ausführung als zweifachgroßer Trommelkörper 1 (gemäß Fig. 1 und 2) liegt im wesentlich ein Quader vor, an dessen Grund- und Deckfläche die Greiferbrücken 4 fixiert sind. Die Greiferbrücken 4 sind somit bei dieser Ausführung symmetrisch (180° versetzt) am Umfang angeordnet. An den Stirnflächen des Quaders sind die bereits erwähnten Trommelzapfen 5 in der Drehachse des Trommelkörpers 1 angeordnet. Die Seitenflächen des Quaders weisen Durchbrüche 3 auf, die untereinander verbunden sind. Die Seitenflächen können eben oder auch leicht gekrümmt ausgebildet sein. Der Zweifachgroße Trommelkörper 1 ist im vorliegenden Beispiel als Hohlprofil 2 ausgebildet, er kann ebenso aus Vollmaterial oder einer Struktur, z.B. Wabenstruktur, ausgeführt sein. An den Seitenflächen sind eine Vielzahl von Durchbrüchen 3 in das Hohlprofil 2, das Vollmaterial oder die Struktur eingebracht, die annähernd deckungsgleich oder auch versetzt an jeder Seitenfläche angeordnet sind. Unabhängig von der Größe oder Lage sind die Durchbrüche 3 der in Bogentransportrichtung vorderen Seitenwand mit der hinteren Seitenwand kommunizierend ausgeführt. Zur Versteifung der Drehachse des zweifachgroßen Trommelkörpers 1 ist im Hohlprofil 2 ein axial durchgängiger Steg 6 angeordnet, der in die Trommelzapfen 5 übergeht.The basic shape of the drum body 1 is based on a prism. At the execution as a double-sized drum body 1 (according to FIG. 1 and 2) there is essentially a cuboid, at the base and Cover surface the gripper bridges 4 are fixed. The gripper bars 4 are therefore symmetrical (offset by 180 °) on this version Scope arranged. They are on the faces of the cuboid already mentioned drum pin 5 in the axis of rotation of the drum body 1 arranged. The side surfaces of the cuboid have openings 3, which are interconnected. The side faces can be flat or slightly curved. The double size Drum body 1 is in the present example as a hollow profile 2 trained, it can also be made of solid material or one Structure, e.g. Honeycomb structure. On the side surfaces are a plurality of openings 3 in the hollow profile 2, the Solid material or the structure introduced, which is almost congruent or are also offset on each side surface. Regardless of the size or location, the openings 3 of the in Sheet transport direction front side wall with the rear side wall communicating. To stiffen the axis of rotation of the double-sized drum body 1 is an axial in the hollow profile 2 continuous web 6 arranged, which merges into the drum pin 5.

Ein dreifachgroßer Trommelkörper 1 ist im wesentlichen mit seiner prismatischen Form durch drei strahlenförmig (sternförmig) in der Drehachse des Trommelkörpers 2 vereinigte Quader gebildet. Gemäß Fig. 3 wird die Drehachse bevorzugt durch den Steg 6 gebildet. Den Deckflächen der Quader sind wiederum die Greiferbrücken 4 zugeordnet, welche bei dem dreifachgroßen Trommelkörper 2 um 120° versetzt angeordnet sind. Eine weitere Ausbildung als dreifachgroßer Trommelkörper 1 mit prismatischer Form wird durch ein trigonal es Prisma, auch Dreikantprisma genannt (Fig. 5), ausgeführt. Die Greiferbrücken 4 sind wiederum am Umfang symmetrisch um 120° versetzt angeordnet. Die Seitenflächen weisen kommunizierende Durchbrüche 3 auf. In Fig. 3 ist im Bereich der Drehachse der axial verlaufende Steg 6, analog zum zweifachgroßen Trommelkörper 1, in die Trommelzapfen 5 übergehend angeordnet. In Fig. 5 sind die Trommelzapfen 5 an den Stirnseiten angeordnet. Der dreifachgroße Trommelkörper 1 gemäß Fig. 3 und gemäß Fig. 5 ist im vorliegenden Beispiel wiederum als Hohlprofil 2 ausgeführt.A triple-sized drum body 1 is essentially with his prismatic shape by three radiating (star-shaped) in the Axis of rotation of the drum body 2 united cuboids formed. According to Fig. 3, the axis of rotation is preferably formed by the web 6. The Cover surfaces of the cuboids are in turn assigned to the gripper bridges 4, which is offset by 120 ° in the triple-sized drum body 2 are arranged. Further training as a triple-sized drum body 1 with a prismatic shape is replaced by a trigonal prism, also called triangular prism (Fig. 5). The gripper bridges 4 are in turn symmetrically offset by 120 ° on the circumference arranged. The side surfaces have communicating openings 3 on. 3 is the axially extending in the region of the axis of rotation Bridge 6, analogous to the double-sized drum body 1, into the drum journal 5 transitionally arranged. 5, the drum journals 5 arranged on the end faces. The triple-sized drum body 1 3 and 5 is again in the present example executed as a hollow profile 2.

Ein vierfachgroßer Trommelkörper 1 ist im wesentlichen als prismatische Form durch vier strahlenförmig (sternförmig) in der Drehachse vereinigte Quader gebildet (Fig. 4). Alternativ bietet sich auch eine Ausbildung als tetragonales Prisma (Vierkantprisma) an (nicht gezeigt). Die Greiferbrücken 4 sind wiederum symmetrisch am Umfang (90° versetzt) angeordnet. Der Trommelkörper 1 ist als Hohlprofil ausgeführt und weist im Bereich der Drehachse einen in die Trommelzapfen 5 übergehenden Steg 6 auf. An den Seitenflächen jedes Quaders sind kommunizierende Durchbrüche 3 angeordnet. Die Seitenflächen selbst können wiederum eben oder gekrümmt ausgeführt sein.A four times larger drum body 1 is essentially a prismatic one Form by four radiating (star-shaped) in the Rotation axis united cuboid (Fig. 4). Alternatively offers training as a tetragonal prism (square prism) on (not shown). The gripper bridges 4 are again symmetrical arranged on the circumference (offset by 90 °). The drum body 1 is as Hollow profile executed and has an in in the region of the axis of rotation the drum pin 5 transition web 6. On the side surfaces communicating breakthroughs 3 are arranged in each cuboid. The Side surfaces themselves can again be flat or curved be.

Außerhalb des Trommelumfanges sind vorzugsweise Bogenleitvorrichtungen angeordnet, an denen der Bogen mit der unbedruckten Seite geführt wird. Die Wirkungsweise ist wie folgt:

  • Dem Trommelkörper 1 wird von einem vorgeordneten Zylinder ein Bogen zugeführt. Der Trommelkörper 1 übernimmt mit seiner Greiferbrücke 4 den Bogen. Der im Greiferschluß fixierte Bogen wird vom Trommelkörper 1 in den Bogenabgang und Bogenaufgang geführt und an den nachgeordneten Druckzylinder übergeben. Durch die Drehbewegung des Trommelkörpers 1 strömt die Umgebungsluft durch die Durchbrüche 3 und an den Greiferbrücken 4 vorbei. Der Bogen wird abhängig von der Maschinengeschwindigkeit durch ein Zentrifugalmoment gegen die Bogenleitvorrichtungen (gedrückt) und an diesen bis zum Übergabebereich geführt. Der Bogen zeigt dabei einen ruhigen Bogenlauf, ohne Wellenbewegung des hinteren Bereiches. Es wirkt somit kein Luftstau auf die bedruckte Seite des Bogens um diesen von Leitflächen fernzuhalten.
    • Outside the drum circumference, sheet guiding devices are preferably arranged, on which the sheet is guided with the unprinted side. The mode of action is as follows:
  • A bow is fed from an upstream cylinder to the drum body 1. The drum body 1 takes over the bow with its gripper bridge 4. The sheet fixed in the gripper closure is guided by the drum body 1 into the sheet outlet and sheet emergence and transferred to the downstream printing cylinder. Due to the rotary movement of the drum body 1, the ambient air flows through the openings 3 and past the gripper bridges 4. Depending on the machine speed, the sheet is guided (pressed) by a centrifugal moment against the sheet guiding devices and on to the transfer area. The arch shows a smooth arch movement, without undulation of the rear area. There is therefore no air jam on the printed side of the sheet to keep it away from the guiding surfaces.

    • BezugszeichenaufstellungList of reference symbols

    11
    TrommelkörperDrum body
    22nd
    HohlprofilHollow profile
    33rd
    Durchbruchbreakthrough
    44th
    GreiferbrückeGrab bridge
    55
    TrommelzapfenDrum spigot
    66
    Stegweb

    Claims (12)

    1. Sheet guiding drum body (1) for a printing press which, by means of drum trunnions (5) arranged on the end faces, is mounted in side frames and which has at least two gripper bridges (4) arranged symmetrically about the periphery and guiding the respective sheets in gripper closures, characterised in that the drum body (1) is essentially constituted by one or several assembled together prismatic shapes within the drum periphery, to the base and/or cover surfaces of which the gripper bridges are arranged and on the side surfaces of which communicating apertures (3) are arranged which are flowed through on rotation by the surrounding air, whereby the sheet is guided by centrifugal moment.
    2. Sheet guiding drum according to Claim 1, characterised in that with a double size drum body (1) with two gripper bridges (4) arranged offset by 180° the prismatic shape is essentially formed by a rectangle.
    3. Sheet guiding drum according to Claim 1, characterised in that with a treble size drum body (1) with gripper bridges (4) arranged offset by 120°, the prismatic shape is essentially formed by three ray-shaped or star-shaped rectangles united at the rotational axis.
    4. Sheet guiding drum according to Claim 1, characterised in that with a quadruple size drum body (1) with four gripper bridges (4) arranged offset by 90°, the prismatic shape is essentially formed by four ray-shaped or star-shaped rectangles united at the rotational axis.
    5. Sheet guiding drum according to Claims 1 to 4, characterised in that the communicating apertures (3) are of the same or differing sizes.
    6. Sheet guiding drum according to Claims 1 to 5, characterised in that the drum body (1) is formed of a hollow profile (2).
    7. Sheet guiding drum according to Claims 1 to 6, characterised in that a sheet guiding device is arranged relative, to the drum body (1) outside the drum periphery.
    8. Sheet guiding drum according to Claims 1 to 5, characterised in that the prismatic shape has flat or curved side surfaces.
    9. Sheet guiding drum body (1) for a printing press which, by means of drum trunnions (8) arranged on its end faces is mounted in side frames and which has at least two gripper bridges (4) arranged symmetrically around the periphery guiding the respective sheets in gripper closures, characterised in that the drum body (1) is formed triple size with three gripper bridges (4) arranged offset through 120° within the drum periphery by a triangular prism at the side surfaces of which communicating apertures (3) are arranged which, on rotation, are flowed through by the surrounding air, whereby the sheet is guided by centrifugal moments.
    10. Sheet guiding drum according to Claim 9, characterised in that the drum body (1) is formed of a hollow profile.
    11. Sheet guiding drum according to Claim 9, characterised in that arranged relative to the drum body (1) outside the drum periphery is a sheet guiding device.
    12. Sheet guiding drum according to Claim 9, characterised in that the prismatic shape has flat or curved side surfaces
    EP95112126A 1994-09-01 1995-08-02 Sheet transfer cylinder for a printing machine Expired - Lifetime EP0699528B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE4431114 1994-09-01
    DE4431114A DE4431114C2 (en) 1994-09-01 1994-09-01 Sheet-guiding drum body for a printing machine

    Publications (3)

    Publication Number Publication Date
    EP0699528A2 EP0699528A2 (en) 1996-03-06
    EP0699528A3 EP0699528A3 (en) 1996-12-27
    EP0699528B1 true EP0699528B1 (en) 1999-04-07

    Family

    ID=6527148

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP95112126A Expired - Lifetime EP0699528B1 (en) 1994-09-01 1995-08-02 Sheet transfer cylinder for a printing machine

    Country Status (4)

    Country Link
    US (1) US5669305A (en)
    EP (1) EP0699528B1 (en)
    AT (1) ATE178532T1 (en)
    DE (2) DE4431114C2 (en)

    Families Citing this family (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE4442301C5 (en) * 1994-09-05 2006-12-14 Heidelberger Druckmaschinen Ag Sheet transfer drum
    DE19848720A1 (en) * 1998-10-22 2000-05-18 Bundesdruckerei Gmbh Printing machine sheet transport aids comprise radially protruding axially free rollers on guide cylinder casing to space sheet from cylinder.
    DE29918309U1 (en) * 1999-10-16 1999-12-23 Roland Man Druckmasch Transfer drum for sheet printing machines
    DE20001970U1 (en) 2000-02-04 2000-03-23 Roland Man Druckmasch Sheet-guiding drum body for a sheet-fed rotary printing machine
    GB2387040B (en) * 2002-03-28 2004-03-10 Wheeler & Clinch Ltd A contact

    Family Cites Families (12)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DD57345A (en) *
    DE725705C (en) * 1941-01-25 1942-09-28 Willy Mailaender Rotary rubber printing machine for multi-colored printing of metal sheets
    DE1102767B (en) * 1958-08-21 1961-03-23 Miehle Goss Dexter Inc Sheet transport device on printing presses
    US2933039A (en) * 1958-08-21 1960-04-19 Miehle Goss Dexter Inc Sheet transferring mechanism
    US3287013A (en) * 1964-11-12 1966-11-22 Itek Corp Roller rframe
    US3642274A (en) * 1970-08-07 1972-02-15 Francis Walter Herrington Sheet-supporting assembly for an inverter roll
    US3780925A (en) * 1972-10-10 1973-12-25 N Ternes Retractable wheel for paper guiding cylinder
    DE3602084A1 (en) * 1986-01-24 1987-07-30 Heidelberger Druckmasch Ag BOW TRANSFER DRUM BETWEEN THE PRINTING UNITS OF ROTATIONAL PRINTING MACHINES
    DD273604B3 (en) * 1988-07-05 1993-03-11 Kba Planeta Ag BOGENFUEHRUNGSZYLINDER
    DE3929228A1 (en) * 1989-09-02 1991-03-21 Koenig & Bauer Ag TRANSFER DRUM
    DE9116367U1 (en) * 1991-06-15 1992-09-24 Koenig & Bauer AG, 8700 Würzburg Cylinders for paper guidance on sheet-fed rotary printing machines
    GB2268162A (en) * 1992-06-19 1994-01-05 Shinohara Machinery Co Ltd Sheet-feeding cylinder with grippers.

    Also Published As

    Publication number Publication date
    ATE178532T1 (en) 1999-04-15
    DE59505569D1 (en) 1999-05-12
    DE4431114C2 (en) 1999-11-18
    EP0699528A3 (en) 1996-12-27
    DE4431114A1 (en) 1996-03-07
    US5669305A (en) 1997-09-23
    EP0699528A2 (en) 1996-03-06

    Similar Documents

    Publication Publication Date Title
    EP0706881B1 (en) Sheet guiding system for a sheet turn-over device in a perfecting printing machine
    DE4442301C5 (en) Sheet transfer drum
    DE102005016783B4 (en) sheet brake
    EP0922574B1 (en) Sheet guiding device in a printing machine
    EP0699528B1 (en) Sheet transfer cylinder for a printing machine
    DE10060557B4 (en) Sheet guiding device in a rotary printing machine
    DE4403884C2 (en) Sheet-
    DE4430105C2 (en) Method and device for the flat guidance of sheets fixed in the gripper closure on a curved surface of a cylinder of a rotary printing machine
    DE10157566B4 (en) Sheet guiding device with a guide surface in a printing machine
    CH651501A5 (en) Sheet-fed rotary printing machine having at least one printing unit
    DE4436955C2 (en) Device for contactless sheet transport
    EP0922576B1 (en) Sheet guiding device with a guiding face in a printing machine
    DE19635388B4 (en) Sheet-fed rotary offset printing machine
    EP1424196B1 (en) Gripper body for conveying sheets in a sheet printing press
    DD249224A1 (en) TRANSFER CYLINDERS IN PRINTING MACHINES
    DE2150986C3 (en) Device for influencing the curvature of a print carrier web between at least two printing units of a web-fed rotary printing press
    EP1122063B1 (en) Sheet transfer cylinder for a rotary printing machine
    EP0709186B1 (en) In-feed gripper for rotary sheet printing machines
    DD259389A1 (en) ARC BLANK IN BENDING
    DE4448055B4 (en) Paper sheet transfer drum - has two symmetrical grip bridges round it, diametrically opposite each other on Y=axis of drum
    DE4424965C2 (en) Device for turning sheets
    DE10222060B4 (en) Sheet guiding drum in a printing press and sheet-fed press
    DE4415669A1 (en) Conveyor system for sheets in rotary printing machines
    DE2307125C3 (en) Set-up on multi-color sheet-fed rotary offset printing machines in series design for correct transport
    DE19800414C5 (en) Device for acting on a bow

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    17P Request for examination filed

    Effective date: 19950816

    AK Designated contracting states

    Kind code of ref document: A2

    Designated state(s): AT BE CH DE FR GB IT LI NL

    PUAL Search report despatched

    Free format text: ORIGINAL CODE: 0009013

    AK Designated contracting states

    Kind code of ref document: A3

    Designated state(s): AT BE CH DE FR GB IT LI NL

    17Q First examination report despatched

    Effective date: 19970616

    GRAG Despatch of communication of intention to grant

    Free format text: ORIGINAL CODE: EPIDOS AGRA

    GRAG Despatch of communication of intention to grant

    Free format text: ORIGINAL CODE: EPIDOS AGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): AT BE CH DE FR GB IT LI NL

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 19990407

    REF Corresponds to:

    Ref document number: 178532

    Country of ref document: AT

    Date of ref document: 19990415

    Kind code of ref document: T

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: NV

    Representative=s name: E. BLUM & CO. PATENTANWAELTE

    Ref country code: CH

    Ref legal event code: EP

    ET Fr: translation filed
    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 19990408

    REF Corresponds to:

    Ref document number: 59505569

    Country of ref document: DE

    Date of ref document: 19990512

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 19990831

    NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
    PLBI Opposition filed

    Free format text: ORIGINAL CODE: 0009260

    PLBF Reply of patent proprietor to notice(s) of opposition

    Free format text: ORIGINAL CODE: EPIDOS OBSO

    26 Opposition filed

    Opponent name: HEIDELBERGER DRUCKMASCHINEN AG

    Effective date: 19991220

    BERE Be: lapsed

    Owner name: MAN ROLAND DRUCKMASCHINEN A.G.

    Effective date: 19990831

    PLBF Reply of patent proprietor to notice(s) of opposition

    Free format text: ORIGINAL CODE: EPIDOS OBSO

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: IF02

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: CH

    Payment date: 20020717

    Year of fee payment: 8

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: GB

    Payment date: 20020730

    Year of fee payment: 8

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: FR

    Payment date: 20020812

    Year of fee payment: 8

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20030802

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20030831

    Ref country code: CH

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20030831

    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20030802

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040430

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: ST

    PLBP Opposition withdrawn

    Free format text: ORIGINAL CODE: 0009264

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20050802

    PLBD Termination of opposition procedure: decision despatched

    Free format text: ORIGINAL CODE: EPIDOSNOPC1

    PLBM Termination of opposition procedure: date of legal effect published

    Free format text: ORIGINAL CODE: 0009276

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

    27C Opposition proceedings terminated

    Effective date: 20050827

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: AT

    Payment date: 20080814

    Year of fee payment: 14

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: AT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090802

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: DE

    Payment date: 20100823

    Year of fee payment: 16

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R119

    Ref document number: 59505569

    Country of ref document: DE

    Effective date: 20120301

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: DE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20120301