EP1084833B1 - Sheet guiding device with a guiding surface in a printing machine - Google Patents

Sheet guiding device with a guiding surface in a printing machine Download PDF

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Publication number
EP1084833B1
EP1084833B1 EP00117891A EP00117891A EP1084833B1 EP 1084833 B1 EP1084833 B1 EP 1084833B1 EP 00117891 A EP00117891 A EP 00117891A EP 00117891 A EP00117891 A EP 00117891A EP 1084833 B1 EP1084833 B1 EP 1084833B1
Authority
EP
European Patent Office
Prior art keywords
sheet
guiding device
rotor
sheet guiding
printing
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
EP00117891A
Other languages
German (de)
French (fr)
Other versions
EP1084833A1 (en
Inventor
Gerd Michalak
Wolfgang Rozek
Walter Kilian
Thomas Stock
Roland-Volker Zengerle
Gerhard Augsberg
Thomas Mai
Jürgen Heinen
Peter Wulf
Udo Trillig
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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1084833A1 publication Critical patent/EP1084833A1/en
Application granted granted Critical
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Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • 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
    • B41F21/102—Combinations of transfer drums and grippers with pneumatic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a printing press with a sheet guiding device a guide surface according to the general concept of the main claim.
  • a sheet guiding device of this type is known from EP 0 156 173 B1.
  • the sheet guiding device is formed by a multiplicity of air supply boxes (flow channels) composed of modules and coupled to fans with a uniform guide surface.
  • the air supply boxes have openings in the guide surface as air nozzles, which can be supplied with suction air or blown air by fans.
  • air supply boxes are formed with comb-shaped ends at the ends, which are part of the air supply boxes. Disadvantages here are the high manufacturing costs and the fact that the comb-shaped design does not take into account the sheet behavior with different substrates and different operating modes (straight printing or face and back printing), so that there may be smearing or damage to the substrate.
  • EP-A-0 576 810 describes a device for supporting the controlled transport of specimens known in the folder from a rotary printing press. Below two a rotating guide means is arranged in a gusset, which is the reversal of the transport direction of the specimens from a first cylinder supported to a second cylinder.
  • the rotatable guide means is a fixed one Product management arranged adjacent.
  • the invention has for its object a sheet guiding device of the kind described in the introduction to create the avoids the disadvantages mentioned, in particular a more even arch guidance along a guide surface below Consideration of the respective operating mode (fine print, Fine and reverse printing) and possible damage of the substrate, especially in the area of the trailing edge of the sheet, noticeably reduced.
  • the task is determined by the training characteristics of the main claim solved. Further training results from the subclaims.
  • the invention relates to a printing press with a sheet guiding device with a guide surface in which the Transfer area of two sheet holding systems, e.g. Gripper systems, assigned.
  • the bow holding systems can be used a sheet guide cylinder and / or a revolving chain system be arranged.
  • This sheet guiding device is by a fixed and a rotatable sheet guiding device, which preferably in the conveying direction of the sheet fixed sheet guiding device is arranged, educated.
  • the rotating sheet guiding device is preferred the sheet outlet of an upstream sheet guide cylinder, especially a printing cylinder.
  • the rotating sheet guiding device and the fixed Sheet guiding device have and are guiding surfaces especially in offset printing units, in coating units and in Flexographic printing units can be used.
  • the advantage of training is that the rotatable sheet guiding device, without damage in the area of the trailing edge of the sheet, as close as possible to the transfer area of two sheet holding systems, preferably gripper systems and / or suction systems, protrudes.
  • the solution according to the invention is not based on that in the exemplary embodiment training described below limited. Rather, it is also suitable for other areas of application inside the press.
  • a sheet-fed rotary printing press exists, for example from several printing units 1 and a coating unit 8, which are arranged in a row in the conveying direction 12.
  • the Coating unit 8 is a cantilever 9 in the conveying direction 12 with rotating Conveyor system 14, which the sheet 19 in the gripper closure transported to a stack of jibs and deposited there, downstream.
  • Each printing unit 1 consists of a plate cylinder 2, a blanket cylinder 3 and a sheet guide cylinder 4, here a pressure cylinder.
  • Each plate cylinder 2 is assigned an inking unit and, if necessary, a dampening unit on which not to be discussed in more detail here.
  • the coating unit 8 has a dosing system 7, e.g. a chambered doctor blade with screened Applicator roller, which with a forme cylinder 6 in Functional connection is.
  • the forme cylinder 6 is again a Sheet guide cylinder 4, here assigned as a printing cylinder.
  • sheet guiding cylinders 5 arranged here as transfer drums and / or turning drums are formed.
  • the sheet guide cylinders 4, 5 and the conveyor systems 14 have gripper systems for sheet transport.
  • the sheet guide cylinders 4.5 based on a single-sized plate cylinder 2 or forme cylinder 6, double-sized.
  • Den as a transfer cylinder trained bow guide cylinders 5 and the Conveyor systems 14 are fixed sheet guiding devices 11 with a guide surface, preferably in a modular arrangement, assigned adjacent.
  • a basic sheet guiding device 11 is for example from the above EP 0 156 173 B1 is known.
  • a sheet 19 from, for example, a first one Transfer the gripper system to a second gripper system.
  • the Figures 2 and 3 show the transfer area 10 between two Sheet guiding cylinders 4, 5, 12 in the conveying direction
  • a fixed sheet guiding device 11 is arranged.
  • the sheet guiding device 11 has one Guide surface on which openings for the discharge of blown air or taking into account suction air of the respective flow direction 20. ends on this guide surface is between the fixed sheet guiding device 11 and the transfer area 10 a rotatable Sheet guiding device 13, 15, 16, 17, preferably via the Format width of the sheet 19, close to the transfer area 10 arranged sufficiently.
  • the sheet guide device rotatable according to the invention 13, 15, 16, 17 consists of a stator 13 located inside has an air supply 16, the stator 13 being concentric a rotor 15 is assigned.
  • the stator 13 has at least one radially arranged channel 17, which is in functional connection with the air supply 16 and in Direction sheet 19 on the adjacent sheet guide cylinder 5 is directed.
  • the rotor 15 has a plurality on the circumference of openings in the area of the channel 17 with correspond to this, so that depending on the operating mode Flow direction 18 can be realized.
  • the rotatable sheet guiding device 13, 15, 16, 17 preferably extends over the maximum format width.
  • the rotor 15 can be driven in rotation.
  • the rotatable sheet guiding device 13, 15, 16, 17 is formed by a plurality of individual rotors 15 with an associated stator 13 (with channel 17) arranged on a drive shaft, for example a hexagonal shaft.
  • the rotor 15 and stator 13 are disc-shaped and can be adjusted manually or by motor zonal over the format width on the drive shaft, for example to pressure-free or paint-free areas.
  • Each rotor 15 can be driven individually or jointly in rotation. In the case of a single drive, the rotors are preferably driven synchronously.
  • the mode of operation is as follows: In the transfer area 10 from a rotating sheet guide cylinder acting as a printing cylinder 4 of the sheet 19 in the conveying direction 12 to the rotating sheet guide cylinder 5 (transfer cylinder) with passed the leading edge.
  • the sheet 19 is liable after Transfer area 10 still with part of the sheet 19 on the Lateral surface of the previous sheet guide cylinder 4.
  • Die rotatable sheet guiding device 13, 15, 16, 17 projects close in the transfer area 10 and supports the lifting of the remaining sheet 19 from the outer surface of the upstream Bow guide cylinder 4.
  • the rotatable sheet guiding device 13, 15, 16, 17 also arranged on the sheet guiding device 11 or be integrated into this end.
  • the rotor 15 In straight printing operation, the rotor 15 is driven into a by means of a drive Rotational movement can be offset and via the openings in the rotor 15 and channel 17 is a flow direction 18 (suction air) in Direction of air supply 16 can be generated (Fig. 2).
  • the air supply 16 is with a corresponding pneumatic system coupled.
  • the peripheral speed of the rotating rotor 15 substantially equal to the machine speed. In this mode, the sheet 19 from Rotor 15 sucked in the area of the channel 17. Because the peripheral speed of the rotor 15 essentially the machine speed corresponds, there is no noticeable relative movement between bend 19 and the rotor 15 Arc 19 briefly guided on the circumference of the rotor 15, however not slowed down.
  • the suction effect only works in the angular range of channel 17 on the sheet 19.
  • a blown air supply can also support this to be ordered.
  • the sheet guiding device 11 is can be acted upon with suction air in the flow direction 20.
  • the rotor 15 In the perfecting mode, the rotor 15 is in one Rotational movement can be moved or stopped. The openings of the rotor 15 are in both cases with the channel 17 in functional connection, the flow 18 as blowing air the bow 19 emerges directed. By means of this blown air flow the printed or lacquered sheet 19 becomes contact-free with the corresponding side on the rotating sheet guiding device 13, 15, 16, 17 in the conveying direction 12 transported. The blown air flow through a characterized high volume flow at low outlet pressure. If the rotatable sheet guiding device 13, 15, 16, 17 with several rotors arranged on the drive shaft 15 designed, each rotor 15 is zonal to pressure / paint-free Areas e.g. by means of an actuator, pinion and Rack can be positioned. The rotors 15 are included Suction air or alternatively blowing air. The Sheet guiding device 11 is preferred in this operating mode can always be blown with air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Discharge By Other Means (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

A printing machine has a paper feed with paper guide and a paper transfer unit between two sheet-holding sections. A rotating sheet guide unit (13,15,16,17) is positioned between a fixed paper guide (11) and the transfer zone (10) for two sheet holding systems. The sheet guides (13,15,16,17) are subjected to either air suction or blowing, and has a stator (13) with a concentric powered rotor (15). The stator has a passage (17) whose operation is linked to an air supply (16) through numerous apertures in the rotor (15).

Description

Die Erfindung betrifft eine Druckmaschine mit einer Bogenführungseinrichtung mit einer Leitfläche nach dem Oberbegrif des Hauptanspruches.The invention relates to a printing press with a sheet guiding device a guide surface according to the general concept of the main claim.

[Stand der Technik][State of the art]

Eine Bogenführungseinrichtung dieser Art ist aus EP 0 156 173 B1 bekannt. Die Bogenführungseinrichtung ist hierbei durch eine Vielzahl von aus Modulen zusammengesetzter und mit Lüftern gekoppelter Luftversorgungskästen (Strömungskanäle) mit einer einheitlichen Leitfläche gebildet. Die Luftversorgungskästen weisen in der Leitfläche Öffnungen als Luftdüsen auf, welche durch Lüfter mit Saugluft oder Blasluft beaufschlagbar sind. Es ist darüber hinaus bekannt, daß derartige Luftversorgungskästen endseitig mit kammförmigen Enden ausgebildet sind, welche Bestandteil der Luftversorgungskästen sind.
Nachteilig ist hierbei der hohe Fertigungsaufwand und dass die kammförmige Ausbildung nicht das Bogenverhalten bei unterschiedlichen Bedruckstoffen sowie unterschiedlichen Betriebsarten (Schöndruck oder Schön- und Widerdruck) berücksichtigt, so dass es zu Abschmiererscheinungen oder Beschädigungen des Bedruckstoffes kommen kann.A sheet guiding device of this type is known from EP 0 156 173 B1. In this case, the sheet guiding device is formed by a multiplicity of air supply boxes (flow channels) composed of modules and coupled to fans with a uniform guide surface. The air supply boxes have openings in the guide surface as air nozzles, which can be supplied with suction air or blown air by fans. It is also known that such air supply boxes are formed with comb-shaped ends at the ends, which are part of the air supply boxes.
Disadvantages here are the high manufacturing costs and the fact that the comb-shaped design does not take into account the sheet behavior with different substrates and different operating modes (straight printing or face and back printing), so that there may be smearing or damage to the substrate.

Aus EP-A-0 576 810 ist eine Einrichtung zur Unterstützung des kontrollierten Exemplartransportes im Falzapparat von einer Rotationsdruckmaschine bekannt. Unterhalb zweier exemplarführender Zylinder ist in einem Zwickel ein rotierbares Führungsmittel angeordnet, welches die Transportrichtungsumkehr der Exemplare von einem ersten Zylinder zum einem zweiten Zylinder unterstützt. Dem rotierbaren Führungsmittel ist eine feststehende Produktführung benachbart angeordnet.EP-A-0 576 810 describes a device for supporting the controlled transport of specimens known in the folder from a rotary printing press. Below two a rotating guide means is arranged in a gusset, which is the reversal of the transport direction of the specimens from a first cylinder supported to a second cylinder. The rotatable guide means is a fixed one Product management arranged adjacent.

[Aufgabe der Erfindung]OBJECT OF THE INVENTION

Der Erfindung liegt die Aufgabe zugrunde eine Bogenführungseinrichtung der eingangs beschriebenen Art zu schaffen, die die genannten Nachteile vermeidet, die insbesondere eine gleichmäßigere Bogenführung entlang einer Leitfläche unter Berücksichtigung der jeweiligen Betriebsart (Schöndruck, Schön- und Widerdruck) gestattet und ein mögliches Beschädigen des Bedruckstoffes, insbesondere im Bereich der Bogenhinterkante, spürbar reduziert. The invention has for its object a sheet guiding device of the kind described in the introduction to create the avoids the disadvantages mentioned, in particular a more even arch guidance along a guide surface below Consideration of the respective operating mode (fine print, Fine and reverse printing) and possible damage of the substrate, especially in the area of the trailing edge of the sheet, noticeably reduced.

Die Aufgabe wird durch die Ausbildungsmerkmale des Hauptanspruches gelöst. Weiterbildungen ergeben sich aus den Unteransprüchen.The task is determined by the training characteristics of the main claim solved. Further training results from the subclaims.

Die Erfindung bezieht sich auf eine Druckmaschine mit einer Bogenführungseinrichtung mit einer Leitfläche in, welche dem Übergabebereich von zwei Bogenhaltesystemen, z.B. Greifersystemen, zugeordnet ist. Die Bogenhaltesysteme können dabei an einem Bogenführungszylinder und/oder einem umlaufenden Kettensystem angeordnet sein. Diese Bogenführungseinrichtung ist durch eine feststehende und eine rotierbare Bogenführungseinrichtung, welche vorzugsweise in Förderrichtung der Bogen der feststehenden Bogenführungseinrichtung vorgeordnet ist, gebildet. Bevorzugt ist die rotierende Bogenführungseinrichtung dem Bogenabgang eines vorgeordneten Bogenführungszylinders, insbesondere eines Druckzylinders, nachgeordnet. Die rotierende Bogenführungseinrichtung sowie die feststehende Bogenführungseinrichtung weisen Leitflächen auf und sind insbesondere in Offsetdruckwerken, in Lackwerken sowie in Flexodruckwerken einsetzbar.The invention relates to a printing press with a sheet guiding device with a guide surface in which the Transfer area of two sheet holding systems, e.g. Gripper systems, assigned. The bow holding systems can be used a sheet guide cylinder and / or a revolving chain system be arranged. This sheet guiding device is by a fixed and a rotatable sheet guiding device, which preferably in the conveying direction of the sheet fixed sheet guiding device is arranged, educated. The rotating sheet guiding device is preferred the sheet outlet of an upstream sheet guide cylinder, especially a printing cylinder. The rotating sheet guiding device and the fixed Sheet guiding device have and are guiding surfaces especially in offset printing units, in coating units and in Flexographic printing units can be used.

Der Vorteil der Ausbildung besteht darin, dass die rotierbare Bogenführungseinrichtung, ohne Beschädigungen im Bereich der Bogenhinterkante zu verursachen, möglichst nahe in den Übergabebereich von zwei Bogenhaltesystemen, vorzugsweise Greifersystemen und/oder Saugersystemen, hineinragt.The advantage of training is that the rotatable sheet guiding device, without damage in the area of the trailing edge of the sheet, as close as possible to the transfer area of two sheet holding systems, preferably gripper systems and / or suction systems, protrudes.

Die erfindungsgemäße Lösung ist nicht auf die im Ausführungsbeispiel nachfolgend beschriebene Ausbildung beschränkt. Vielmehr eignet sich diese auch für weitere Einsatzgebiete innerhalb der Druckmaschine. So ist beispielsweise die rotierbare Bogenführungseinrichtung im Bogenaufgang einer feststehenden Bogenführungseinrichtung in Förderrichtung nachgeordnet und dem Übergabebereich zweier Bogenhaltesystemen, z.B. Greifersystemen von Bogenführungszylindern, vorgeordnet.The solution according to the invention is not based on that in the exemplary embodiment training described below limited. Rather, it is also suitable for other areas of application inside the press. For example, the rotatable one Sheet guiding device in the arc riser fixed sheet guiding device in the conveying direction downstream and the transfer area of two sheet holding systems, e.g. Gripper systems of sheet guiding cylinders, upstream.

[Beispiele][Examples]

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

Fig. 1
eine Bogenrotationsdruckmaschine in Reihenbauweise mit feststehender Bogenführungseinrichtung,
Fig. 2
eine Bogenführungseinrichtung im Übergabebereich für die Betriebsart Schöndruck,
Fig. 3
eine Bogenführungseinrichtung im Übergabebereich für die Betriebsart Schön/Widerdruck.
The invention will be explained in more detail using an exemplary embodiment. The following schematically show:
Fig. 1
a sheet-fed rotary printing press in a row design with a fixed sheet guiding device,
Fig. 2
a sheet guiding device in the transfer area for the straight printing mode,
Fig. 3
a sheet guiding device in the transfer area for the beautiful / reverse printing mode.

Eine Bogenrotationsdruckmaschine gemäß Figur 1 besteht beispielsweise aus mehreren Druckwerken 1 sowie einem Lackwerk 8, welche in Förderrichtung 12 in Reihe angeordnet sind. Dem Lackwerk 8 ist in Förderrichtung 12 ein Ausleger 9 mit umlaufenden Fördersystem 14, welches die Bogen 19 im Greiferschluß auf einen Auslegerstapel transportiert und dort ablegt, nachgeordnet. Jedes Druckwerk 1 besteht aus einem Plattenzylinder 2, einem Gummituchzylinder 3 und einem Bogenführungszylinder 4, hier einem Druckzylinder. Jedem Plattenzylinder 2 ist ein Farbwerk zugeordnet und ggf. ein Feuchtwerk, auf das hier nicht näher eingegangen werden soll. Das Lackwerk 8 weist ein Dosiersystem 7, z.B. ein Kammerrakel mit gerasterter Auftragwalze, auf, welches mit einem Formzylinder 6 in Funktionsverbindung ist. Dem Formzylinder 6 ist wiederum ein Bogenführungszylinder 4, hier als Druckzylinder, zugeordnet. A sheet-fed rotary printing press according to FIG. 1 exists, for example from several printing units 1 and a coating unit 8, which are arranged in a row in the conveying direction 12. the Coating unit 8 is a cantilever 9 in the conveying direction 12 with rotating Conveyor system 14, which the sheet 19 in the gripper closure transported to a stack of jibs and deposited there, downstream. Each printing unit 1 consists of a plate cylinder 2, a blanket cylinder 3 and a sheet guide cylinder 4, here a pressure cylinder. Each plate cylinder 2 is assigned an inking unit and, if necessary, a dampening unit on which not to be discussed in more detail here. The coating unit 8 has a dosing system 7, e.g. a chambered doctor blade with screened Applicator roller, which with a forme cylinder 6 in Functional connection is. The forme cylinder 6 is again a Sheet guide cylinder 4, here assigned as a printing cylinder.

Zwischen den Druckwerken 1 und dem Lackwerk 8 sind Bogenführungszylinder 5 angeordnet, die hier als Transfertrommeln und/oder Wendetrommeln ausgebildet sind. Die Bogenführungszylinder 4, 5 sowie die Fördersysteme 14 weisen Greifersysteme für den Bogentransport auf. Dabei sind die Bogenführungszylinder 4,5, bezogen auf einen einfachgroßen Plattenzylinder 2 bzw. Formzylinder 6, doppelt groß ausgebildet. Den als Transferzylinder ausgebildeten Bogenführungszylindern 5 sowie den Fördersystemen 14 sind feststehende Bogenführungseinrichtungen 11 mit einer Leitfläche, vorzugsweise in modularer Anordnung, benachbart zugeordnet. Eine prinzipielle Bogenführungseinrichtung 11 ist beispielsweise aus der eingangs genannten EP 0 156 173 B1 bekannt.Between the printing units 1 and the coating unit 8 are sheet guiding cylinders 5 arranged here as transfer drums and / or turning drums are formed. The sheet guide cylinders 4, 5 and the conveyor systems 14 have gripper systems for sheet transport. Here are the sheet guide cylinders 4.5, based on a single-sized plate cylinder 2 or forme cylinder 6, double-sized. Den as a transfer cylinder trained bow guide cylinders 5 and the Conveyor systems 14 are fixed sheet guiding devices 11 with a guide surface, preferably in a modular arrangement, assigned adjacent. A basic sheet guiding device 11 is for example from the above EP 0 156 173 B1 is known.

In einem Übergabebereich 10 von Bogenhaltesystemen wird bekanntlich ein Bogen 19 von beispielsweise einem ersten Greifersystem an ein zweites Greifersystem übergeben. Die Figuren 2 und 3 zeigen den Übergabebereich 10 zwischen zwei Bogenführungszylindern 4, 5, wobei in Förderrichtung 12 im Bogenabgang eine feststehende Bogenführungseinrichtung 11 angeordnet ist. Die Bogenführungseinrichtung 11 weist eine Leitfläche auf, welche Öffnungen für den Austritt von Blasluft oder für den Eintritt von Saugluft unter Berücksichtigung der jeweiligen Strömungsrichtung 20 aufweist. Endseitig an dieser Leitfläche ist zwischen der feststehenden Bogenführungseinrichtung 11 und dem Übergabebereich 10 eine rotierbare Bogenführungseinrichtung 13,15,16,17, bevorzugt über die Formatbreite des Bogens 19, nahe an den Übergabebereich 10 heranreichend angeordnet.In a transfer area 10 of sheet holding systems as is known, a sheet 19 from, for example, a first one Transfer the gripper system to a second gripper system. The Figures 2 and 3 show the transfer area 10 between two Sheet guiding cylinders 4, 5, 12 in the conveying direction A fixed sheet guiding device 11 is arranged. The sheet guiding device 11 has one Guide surface on which openings for the discharge of blown air or taking into account suction air of the respective flow direction 20. ends on this guide surface is between the fixed sheet guiding device 11 and the transfer area 10 a rotatable Sheet guiding device 13, 15, 16, 17, preferably via the Format width of the sheet 19, close to the transfer area 10 arranged sufficiently.

Die erfindungsgemäß rotierbare Bogenführungseinrichtung 13,15,16,17 besteht dabei aus einem Stator 13, der im Inneren eine Luftversorgung 16 aufweist, wobei dem Stator 13 konzentrisch ein Rotor 15 zugeordnet ist. Der Stator 13 weist wenigstens einen radial angeordneten Kanal 17 auf, welcher mit der Luftversorgung 16 in Funktionsverbindung ist und in Richtung Bogen 19 auf den benachbarten Bogenführungszylinder 5 gerichtet ist. Der Rotor 15 weist umfangsseitig eine Vielzahl von Öffnungen auf, die im Bereich des Kanals 17 mit diesem korrespondieren, so dass je nach Betriebsart eine Strömungsrichtung 18 realisierbar ist.The sheet guide device rotatable according to the invention 13, 15, 16, 17 consists of a stator 13 located inside has an air supply 16, the stator 13 being concentric a rotor 15 is assigned. The stator 13 has at least one radially arranged channel 17, which is in functional connection with the air supply 16 and in Direction sheet 19 on the adjacent sheet guide cylinder 5 is directed. The rotor 15 has a plurality on the circumference of openings in the area of the channel 17 with correspond to this, so that depending on the operating mode Flow direction 18 can be realized.

In einer ersten Ausbildung erstreckt sich die rotierbare Bogenführungseinrichtung 13, 15, 16, 17 bevorzugt über die maximale Formatbreite. Hierbei ist der Rotor 15 rotativ antreibbar.
In einer weiteren Ausbildung ist die rotierbare Bogenführungseinrichtung 13, 15, 16, 17 durch mehrere einzelne, auf einer Antriebswelle, z.B. eine Sechskantwelle, angeordnete Rotoren 15 mit zugeordnetem Stator 13 (mit Kanal 17) gebildet. Rotor 15 und Stator 13 sind dabei scheibenförmig ausgebildet und sind über die Formatbreite auf der Antriebswelle manuell oder motorisch zonal, z.B. auf druckfreie bzw. lackfreie Bereiche, einstellbar. Jeder Rotor 15 ist dabei einzeln oder gemeinsam rotativ antreibbar. Bei einem Einzelantrieb werden die Rotoren bevorzugt synchron angetrieben.In a first embodiment, the rotatable sheet guiding device 13, 15, 16, 17 preferably extends over the maximum format width. Here, the rotor 15 can be driven in rotation.
In a further embodiment, the rotatable sheet guiding device 13, 15, 16, 17 is formed by a plurality of individual rotors 15 with an associated stator 13 (with channel 17) arranged on a drive shaft, for example a hexagonal shaft. The rotor 15 and stator 13 are disc-shaped and can be adjusted manually or by motor zonal over the format width on the drive shaft, for example to pressure-free or paint-free areas. Each rotor 15 can be driven individually or jointly in rotation. In the case of a single drive, the rotors are preferably driven synchronously.

Die Wirkungsweise ist wie folgt: Im Übergabebereich 10 wird von einem rotierenden als Druckzylinder fungierendem Bogenführungszylinder 4 der Bogen 19 in Förderrichtung 12 an den rotierenden Bogenführungszylinder 5 (Transferzylinder) mit der Vorderkante übergeben. Der Bogen 19 haftet dabei nach dem Übergabebereich 10 noch mit einem Teil des Bogens 19 auf der Mantelfläche des vorherigen Bogenführungszylinders 4. Die rotierbare Bogenführungseinrichtung 13, 15, 16, 17 ragt nahe in den Übergabebereich 10 und unterstützt das Abheben des restlichen Bogens 19 von der Mantelfläche des vorgeordneten Bogenführungszylinders 4. Durch das unterstützte Abheben vom Bogenführungszylinder 4 und vorzugsweise in Kombination mit der gekrümmten Kontur der rotierbaren Bogenführungseinrichtung 13, 15, 16, 17 werden mögliche Beschädigungen am Bogen 19 vermieden und der Bogen 19 wird gleichmäßig geführt. Alternativ kann die rotierbare Bogenführungseinrichtung 13, 15, 16, 17 auch an der Bogenführungseinrichtung 11 angeordnet bzw. in diese endseitig integriert werden.The mode of operation is as follows: In the transfer area 10 from a rotating sheet guide cylinder acting as a printing cylinder 4 of the sheet 19 in the conveying direction 12 to the rotating sheet guide cylinder 5 (transfer cylinder) with passed the leading edge. The sheet 19 is liable after Transfer area 10 still with part of the sheet 19 on the Lateral surface of the previous sheet guide cylinder 4. Die rotatable sheet guiding device 13, 15, 16, 17 projects close in the transfer area 10 and supports the lifting of the remaining sheet 19 from the outer surface of the upstream Bow guide cylinder 4. By the assisted lifting from Sheet guide cylinder 4 and preferably in combination with the curved contour of the rotatable sheet guiding device 13, 15, 16, 17 will damage the bow 19 avoided and the sheet 19 is guided evenly. Alternatively, the rotatable sheet guiding device 13, 15, 16, 17 also arranged on the sheet guiding device 11 or be integrated into this end.

Im Schöndruckbetrieb ist der Rotor 15 mittels Antrieb in eine Rotationsbewegung versetzbar und über die Öffnungen im Rotor 15 und Kanal 17 ist eine Strömungsrichtung 18 (Saugluft) in Richtung Luftversorgung 16 erzeugbar (Fig. 2). Die Luftversorgung 16 ist dabei mit einem entsprechenden Pneumatiksystem gekoppelt. Bevorzugt ist die Umfangsgeschwindigkeit des rotierenden Rotors 15 im wesentlichen gleich der Maschinengeschwindigkeit. In dieser Betriebsart wird der Bogen 19 vom Rotor 15 im Bereich des Kanals 17 angesaugt. Da die Umfangsgeschwindigkeit des Rotors 15 im wesentlichen der Maschinengeschwindigkeit entspricht, entsteht keine spürbare Relativbewegung zwischen Bogen 19 und dem Rotor 15. Hierbei wird der Bogen 19 am Umfang des Rotors 15 kurzzeitig geführt, jedoch nicht abgebremst. Die Saugwirkung wirkt lediglich im Winkelbereich des Kanals 17 auf den Bogen 19. Um den abschmierfreien Übergang von der rotierbaren Bogenführungseinrichtung 13, 15, 16, 17 zur feststehenden Bogenführungseinrichtung 11 zu unterstützen kann dazwischen zusätzlich eine Blasluftversorgung angeordnet werden. Die Bogenführungseinrichtung 11 ist mit Saugluft in Strömungsrichtung 20 beaufschlagbar.In straight printing operation, the rotor 15 is driven into a by means of a drive Rotational movement can be offset and via the openings in the rotor 15 and channel 17 is a flow direction 18 (suction air) in Direction of air supply 16 can be generated (Fig. 2). The air supply 16 is with a corresponding pneumatic system coupled. The peripheral speed of the rotating rotor 15 substantially equal to the machine speed. In this mode, the sheet 19 from Rotor 15 sucked in the area of the channel 17. Because the peripheral speed of the rotor 15 essentially the machine speed corresponds, there is no noticeable relative movement between bend 19 and the rotor 15 Arc 19 briefly guided on the circumference of the rotor 15, however not slowed down. The suction effect only works in the angular range of channel 17 on the sheet 19. To the grease-free Transition from the rotatable sheet guiding device 13, 15, 16, 17 to the fixed sheet guiding device 11 A blown air supply can also support this to be ordered. The sheet guiding device 11 is can be acted upon with suction air in the flow direction 20.

Im Schön- und Widerdruckbetrieb ist der Rotor 15 in eine Rotationsbewegung versetzbar oder stillsetzbar. Die Öffnungen des Rotors 15 sind in beiden Fällen mit dem Kanal 17 derart in Funktionsverbindung, das eine Strömung 18 als Blasluft auf den Bogen 19 gerichtet austritt. Mittels dieser Blasluftströmung wird der bedruckte bzw. lackierte Bogen 19 berührungsfrei mit der entsprechenden Seite an der rotierenden Bogenführungseinrichtung 13, 15, 16, 17 in Förderrichtung 12 transportiert. Bevorzugt ist die Blasluftströmung durch einen hohen Volumenstrom bei kleinem Austrittsdruck charakterisiert. Ist die rotierbare Bogenführungseinrichtung 13, 15, 16, 17 mit mehreren auf der Antriebswelle angeordneten Rotoren 15 ausgebildet, so ist jeder Rotor 15 zonal auf druck/lackfreie Bereiche z.B. mittels Stellmotor, Ritzel und Zahnstange positionierbar. Die Rotoren 15 sind dabei mit Saugluft oder alternativ mit Blasluft beaufschlagbar. Die Bogenführungseinrichtung 11 ist in dieser Betriebsart bevorzugt ständig mit Blasluft beaufschlagbar. In the perfecting mode, the rotor 15 is in one Rotational movement can be moved or stopped. The openings of the rotor 15 are in both cases with the channel 17 in functional connection, the flow 18 as blowing air the bow 19 emerges directed. By means of this blown air flow the printed or lacquered sheet 19 becomes contact-free with the corresponding side on the rotating sheet guiding device 13, 15, 16, 17 in the conveying direction 12 transported. The blown air flow through a characterized high volume flow at low outlet pressure. If the rotatable sheet guiding device 13, 15, 16, 17 with several rotors arranged on the drive shaft 15 designed, each rotor 15 is zonal to pressure / paint-free Areas e.g. by means of an actuator, pinion and Rack can be positioned. The rotors 15 are included Suction air or alternatively blowing air. The Sheet guiding device 11 is preferred in this operating mode can always be blown with air.

[Bezugszeichenliste][REFERENCE LIST]

11
Druckwerkprinting unit
22
Plattenzylinderplate cylinder
33
GummituchzylinderBlanket cylinder
44
BogenführungszylinderSheet guiding cylinder
55
BogenführungszylinderSheet guiding cylinder
66
Formzylinderform cylinder
77
Dosiersystemdosing
88th
Lackwerkcoating unit
99
Auslegerboom
1010
ÜbergabebereichTransfer area
1111
BogenführungseinrichtungSheet guiding device
1212
Förderrichtungconveying direction
1313
Statorstator
1414
Fördersystemconveyor system
1515
Rotorrotor
1616
Luftversorgungair supply
1717
Kanalchannel
1818
Strömungsrichtungflow direction
1919
Bogenarc
2020
Strömungsrichtungflow direction

Claims (6)

  1. Printing press with a fixed sheet guiding device (11) with a guide surface and with a rotatable sheet guiding device (13, 15, 16, 17) which is fitted to a transfer region (10) of two sheet holding systems and is arranged between the fixed sheet guiding device (11) and the transfer region (10) of the two sheet holding systems, characterised in that the rotatable sheet guiding device (13, 15, 16, 17) can be subjected according to choice to blown air or suction and has a stator (13) and a rotor (15) connected with a drive and arranged concentrically thereon, wherein the stator (13) has a channel (17) which is functionally connected with a plurality of openings of the rotor (15) by means of an air supply (16).
  2. Printing press according to Claim 1, characterised in that in the feed direction (12), the rotatable sheet guiding device (13, 15, 16, 17) is arranged between the transfer region (10) and the downstream arranged fixed sheet guiding device (11) in the sheet drop.
  3. Printing press according to Claim 1, characterised in that in the feed direction (12), the rotatable sheet guiding device (13, 15, 16, 17) is arranged between the fixed sheet guiding device (11) and the subsequently arranged transfer region (10) in the sheet rise.
  4. Printing press according to Claim 1, characterised in that in single side printing, the rotor (15) is driveable in rotation and the sheet (19) can be subjected to suction via the openings in the rotor (15), the channel (17) and the air supply (16).
  5. Printing press according to Claim 1, characterised in that in perfect printing, the rotor (15) is drivable in rotation or can be rendered stationary and the sheet (19) can be subjected to blown air via the openings in the rotor (15), the channel (17) and the air supply (16).
  6. Printing press according to Claims 1, 4 and 5, characterised in that the rotor (15) can be driven with the press speed.
EP00117891A 1999-09-14 2000-08-19 Sheet guiding device with a guiding surface in a printing machine Expired - Lifetime EP1084833B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29916083U DE29916083U1 (en) 1999-09-14 1999-09-14 Sheet guiding device with a guide surface in a printing press
DE29916083U 1999-09-14

Publications (2)

Publication Number Publication Date
EP1084833A1 EP1084833A1 (en) 2001-03-21
EP1084833B1 true EP1084833B1 (en) 2002-10-16

Family

ID=8078844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00117891A Expired - Lifetime EP1084833B1 (en) 1999-09-14 2000-08-19 Sheet guiding device with a guiding surface in a printing machine

Country Status (3)

Country Link
EP (1) EP1084833B1 (en)
AT (1) ATE226143T1 (en)
DE (2) DE29916083U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1123805A1 (en) * 2000-02-10 2001-08-16 Mitsubishi Heavy Industries, Ltd. Sheet guide unit for sheet-fed press
JP3224349U (en) 2018-10-29 2019-12-12 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフトＨｅｉｄｅｌｂｅｒｇｅｒ Ｄｒｕｃｋｍａｓｃｈｉｎｅｎ ＡＧ Printing machine having a blow device in front of a printing nip

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494949A (en) * 1983-01-10 1985-01-22 The Lehigh Press, Inc. Sheet folding apparatus and method
US4666139A (en) * 1985-10-21 1987-05-19 Harris Graphics Corporation Vacuum system for combination fold-off control
JPS63256441A (en) * 1987-04-14 1988-10-24 Toppan Printing Co Ltd Ink-rubbing preventive method in carrying printing paper
DE59303826D1 (en) * 1992-05-29 1996-10-24 Heidelberger Druckmasch Ag Device to support the controlled transport of copies in the folder of rotary printing presses
DE4344039C2 (en) * 1993-12-23 2002-08-29 Koenig & Bauer Ag Sheet guiding device in convertible printing machines

Also Published As

Publication number Publication date
ATE226143T1 (en) 2002-11-15
EP1084833A1 (en) 2001-03-21
DE50000640D1 (en) 2002-11-21
DE29916083U1 (en) 1999-11-18

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