EP2036726B1 - Method for operating a sheet fed printing press - Google Patents

Method for operating a sheet fed printing press Download PDF

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Publication number
EP2036726B1
EP2036726B1 EP20080163954 EP08163954A EP2036726B1 EP 2036726 B1 EP2036726 B1 EP 2036726B1 EP 20080163954 EP20080163954 EP 20080163954 EP 08163954 A EP08163954 A EP 08163954A EP 2036726 B1 EP2036726 B1 EP 2036726B1
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EP
European Patent Office
Prior art keywords
printing
rotational speed
main drive
driven
cylinders
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EP20080163954
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German (de)
French (fr)
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EP2036726A3 (en
EP2036726A2 (en
Inventor
Ulrich Beitel
Tobias Vorbröcker
Holger Dr. Wiese
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Manroland Sheetfed GmbH
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Manroland Sheetfed GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/06—Tripping devices or stop-motions for starting or stopping operation of sheet or web feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/004—Electric or hydraulic features of drives
    • B41F13/0045—Electric driving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/008—Mechanical features of drives, e.g. gears, clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/70—Driving devices associated with particular installations or situations
    • B41P2213/73—Driving devices for multicolour presses
    • B41P2213/734—Driving devices for multicolour presses each printing unit being driven by its own electric motor, i.e. electric shaft

Definitions

  • the invention relates to a method for operating a sheet-fed printing press according to the preamble of claim 1.
  • a sheetfed press has a feeder, a jib, and several printing units positioned between the feeder and the jib. For printing sheets are introduced from the feeder into the sheet-fed press and moved sequentially through the printing units, wherein after printing the sheets are ejected in the same area of the boom from the sheet-fed press.
  • Sheet-fed printing presses are known in practice which, in addition to at least one main drive, also have additional drives assigned to the printing units and can be synchronized with the or each main drive, in particular direct drives.
  • the additional drives assigned to the printing units drive, for example, into the form cylinder of the printing units.
  • the sheet-fed printing press usually has a so-called false-sheet detection device, wherein a missing sheet is to be understood as a printed sheet that deviates from a correct printed sheet with regard to at least one property.
  • a missing sheet it can be For example, a double sheet, multiple sheet or oblique sheet act. Missing sheets trigger stoppers on the press. However, stoppers can also be triggered by other causes.
  • the procedure is that disengaged after the occurrence of a stopper of the feeder and all printed sheets located in the printing presses are transported in the range of the boom in which the press either at a constant speed or gradually with a jogging speed turned off printing is operated forward rotating.
  • a method of controlling a sheet material processing machine In a with individually driven, carrying a printing plate plate cylinders over-colored sheets should be avoided after a print interruption. In a print interruption in a contact zone of the plate cylinder to an adjacent blanket cylinder, the pressure contact is released and the inking rollers of the inking unit are parked by the plate cylinder. The drive connection between the inking unit and the main drive with a gear train or the direct drive of the plate cylinder is separated and the entire compactor of the inking unit is stopped.
  • a method and a device for starting a sheet-fed printing press are known.
  • the sheets are removed from the top of a feeder pile and conveyed via a conveyor table to a plant.
  • the connection of the printing cylinder in the individual printing units is carried out according to the sheet travel of a first incoming into the machine sheet.
  • the investor is stopped immediately and the organs for sheet withdrawal remain switched on.
  • the bow causing the stopper is removed from the conveyor table and the feeder is activated at low base speed.
  • the sheet feed is released and the machine is accelerated from the base speed to the production speed provided for production.
  • the present invention is based on the problem to provide a novel method for operating a sheet-fed press.
  • a method according to claim 1 After the occurrence of a stopper, the or each main drive is driven at a constant speed or in jogging oscillating with a jogging speed, so that sheet can be discharged from the printing units using the driven at the constant speed or the jog speed transfer cylinder and impression cylinder, whereas the or each to-with a smaller speed is driven, so that the form cylinder and the inking units of the printing units are driven during the discharge of the sheet from the printing units at a lower speed than the transfer cylinders and impression cylinders of the printing units.
  • the present invention relates to a method for operating a sheet-fed printing press, wherein a sheet-fed press comprises a feeder, a boom and a plurality of printing units positioned between the feeder and the boom.
  • a sheet-fed press comprises a feeder, a boom and a plurality of printing units positioned between the feeder and the boom.
  • FIG Fig. 1 for a sheet-fed press comprising four printing units 10, 11, 12 and 13.
  • Each of the printing units 10, 11, 12 and 13 of the sheet-fed printing machine comprises according to Fig. 1 an impression cylinder 14, a transfer cylinder 15, an inking unit 16 and a forme cylinder 17.
  • each printing unit may also include a dampening unit.
  • the printing machine has a main drive 19, wherein the main drive 19 drives into the impression cylinder 14 of the printing unit 10.
  • the main drive 19 are all the impression cylinder 14, transfer cylinder 15 and inking 16 of the printing units 10, 11, 12 and 13 and the transfer cylinder 18 in the sense of a closed Räderzugs drivable.
  • a further main drive 19 ' is present to drive decentralized in the closed gear train.
  • Each form cylinder 17 is a separate and designed as a direct drive 20, with the or each main drive 19, 19 'synchronizable auxiliary drive assigned to the form cylinder 17 of all printing units 10, 11, 12 and 13 propelled by an engine.
  • Each forme cylinder 17 of each printing unit 10, 11, 12 and 13 is uncoupled via a clutch 21 from the closed gear train, in which the impression cylinder 14, the transfer cylinder 15 and the transfer cylinder 18 are integrated.
  • Fig. 1 can be removed, in addition to the clutches 21 more clutches 22 are provided with which the inking units 16 can be disconnected from the closed gear train.
  • all counter-pressure cylinders 14, all transfer cylinders 18, all transfer cylinders 15 and all inking units 16 are driven by the main drive 19, for which purpose the clutches 21 opened and the clutches 22 are closed.
  • the inking units 16 When printing the form cylinder 17 are therefore on the drive side of the main drive 19 and thus decoupled from the rest of the printing units of the printing press, the inking units 16, however, the drive side coupled to the main drive 19.
  • the forme cylinders 17 are driven by their direct drives 20 on their own. If a stopper occurs on such a sheet-fed printing machine, the feeder is first disengaged from the main drive, so that no new printed sheets are introduced into the sheet-fed printing press.
  • the or each main drive 19, 19 ' is driven at a constant speed after the occurrence of a stopper, so that sheet can be discharged with the help of the constant speed driven transfer cylinder 15, impression cylinder 14 and transfer cylinder 18 from the printing units.
  • the direct drives 20, however, are driven at a lower speed than the constant speed, wherein both the forme cylinder 17 and the inking units 16 are driven in the discharge of printed sheets from the direct drives 20 of the forme cylinder 17.
  • the clutches 21 are closed and the clutches 22 are opened.
  • the forme cylinder 17 and inking units 16 of the printing units are driven at a lower speed than the transfer cylinders 15, impression cylinders 14 and transfer cylinders 18.
  • the forme cylinders 17 and inking units 16 are accordingly the printing units are driven synchronously by the direct drives 20 of the printing units, so that when resuming the printing operation no synchronization of the inking units 16 is required.
  • the inking units 16 are always operated synchronously to the forme cylinders 17 during discharge of the printed sheets, so that when to resume the Printing the plate cylinder 17 are synchronized to the main drive 19, automatically the inking units 16 to the or each main drive 19, 19 'are synchronized, so a Wiederankoppeln the inking units to the or each main drive 19, 19' by opening the clutches 21 and closing the Clutches 22 can be done with little effort.
  • the sheets can be discharged within a relatively short time from the sheet-fed press.
  • the reduced rotational speed for the inking units 16 and the forme cylinder 17 prevents a leveling of the inked gradient as well as overstaining and zonal blurring of the color profile.
  • the speed of the same relative to the constant speed can be arbitrarily reduced.
  • the inking units 16 and plate cylinder 17 can also be stopped or stopped.
  • the direct drives 20 are driven at a lower speed than the jogging speed, wherein both the forme cylinder 17 and the inking units 16 are driven during the discharge of printed sheets from the direct drives 20 of the forme cylinder 17.
  • the speed at which the direct drives 20 are driven during the discharge is smaller than the speed of the or each main drive 19, 19 'averaged during the inching operation.
  • the additional drives associated with the printing units are designed as direct drives associated with the forme cylinders.
  • z. B. designed as direct drives auxiliary drives are assigned to the transfer cylinders, which drive into the transfer cylinder during printing.
  • the additional drives are assigned to the inking units of the printing units, which drive into the inking units during printing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Betreiben einer Bogendruckmaschine gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for operating a sheet-fed printing press according to the preamble of claim 1.

Eine Bogendruckmaschine verfügt über einen Anleger, einen Ausleger sowie mehrere zwischen dem Anleger und dem Ausleger positionierte Druckwerke. Zum Bedrucken von Druckbogen werden dieselben vom Anleger in die Bogendruckmaschine eingeschleust und nacheinander durch die Druckwerke bewegt, wobei nach dem Bedrucken der Druckbogen dieselben im Bereich des Auslegers aus der Bogendruckmaschine ausgeschleust werden. Je größer die Produktionsmöglichkeiten der Bogendruckmaschine sein sollen, desto größer ist die Anzahl der Druckwerke zwischen dem Anleger und Ausleger.A sheetfed press has a feeder, a jib, and several printing units positioned between the feeder and the jib. For printing sheets are introduced from the feeder into the sheet-fed press and moved sequentially through the printing units, wherein after printing the sheets are ejected in the same area of the boom from the sheet-fed press. The greater the production capabilities of the sheetfed press should be, the greater the number of printing units between the feeder and boom.

Aus der Praxis sind Bogendruckmaschinen bekannt, die zusätzlich zu mindestens einem Hauptantrieb weiterhin den Druckwerken zugeordnete, mit dem oder jedem Hauptantrieb synchronisierbare Zusatzantriebe, insbesondere Direktantriebe, aufweisen. Die den Druckwerken zugeordneten Zusatzantriebe treiben zum Beispiel in Formzylinder der Druckwerke ein.Sheet-fed printing presses are known in practice which, in addition to at least one main drive, also have additional drives assigned to the printing units and can be synchronized with the or each main drive, in particular direct drives. The additional drives assigned to the printing units drive, for example, into the form cylinder of the printing units.

Beim Drucken mit einer solchen Druckmaschine werden typischerweise bis auf die Formzylinder der Druckwerke sämtliche Baugruppen von dem oder jedem Hauptantrieb angetrieben, die Formzylinder der Druckwerke werden hingegen von den denselben zugeordneten Zusatzantrieben, insbesondere den Direktantrieben, eigenmotorisch angetrieben.When printing with such a printing press typically all components are driven by the or each main drive except for the form cylinder of the printing units, the form cylinder of the printing units, however, driven by the same associated auxiliary drives, especially the direct drives, self-propelled.

Im Bereich des Anlegers verfügt die Bogendruckmaschine üblicherweise über eine sogenannte Fehlbogendetektionseinrichtung, wobei unter einem Fehlbogen ein Druckbogen verstanden werden soll, der hinsichtlich wenigstens einer Eigenschaft von einem korrekten Druckbogen abweicht. Bei einem Fehlbogen kann es sich z.B. um einen Doppelbogen, Mehrfachbogen oder Schrägbogen handeln. Fehlbogen lösen an der Druckmaschine Stopper aus. Stopper können jedoch auch durch andere Ursachen ausgelöst werden.In the area of the investor, the sheet-fed printing press usually has a so-called false-sheet detection device, wherein a missing sheet is to be understood as a printed sheet that deviates from a correct printed sheet with regard to at least one property. With a missing sheet it can be For example, a double sheet, multiple sheet or oblique sheet act. Missing sheets trigger stoppers on the press. However, stoppers can also be triggered by other causes.

Nach der Praxis wird bei Auftreten eines Stoppers so vorgegangen, dass nach Auftreten eines Stoppers der Anleger ausgekuppelt und alle im Bereich der Druckwerke befindliche Druckbogen in den Bereich des Auslegers transportiert werden, in dem die Druckmaschine entweder mit einer konstanten Drehzahl oder schrittweise mit einer Tippdrehzahl bei abgestelltem Druck vorwärts drehend betrieben wird.In practice, when a stopper occurs, the procedure is that disengaged after the occurrence of a stopper of the feeder and all printed sheets located in the printing presses are transported in the range of the boom in which the press either at a constant speed or gradually with a jogging speed turned off printing is operated forward rotating.

Während des Ausschleusens der Druckbogen erfolgt keine Farbübergabe von den Farbwerken der Druckwerke an die auf den Formzylindern positionierten Druckplatten, sodass sich ein während des Fortdrucks aufgebautes Farbschichtdickengefälle während des Ausschleusens der Druckplatten zu einem relativ hohen Durchschnittswert egalisiert. Ferner wird durch eine Changierbewegung von Farbwerkwalzen die zonale Farbgebung verwischt. Dies hat zur Folge, dass nach Beseitigen eines Stoppers mit Wiederaufnahme des Druckbetriebs dennoch eine Vielzahl von Makulaturbögen gedruckt wird, bis sich die gewünschte Farbgebung wieder eingestellt hat. Es besteht daher ein Bedarf an einem neuartigen Verfahren zum Betreiben einer Bogendruckmaschine, mit Hilfe dessen die Anlaufmakulatur nach Beseitigung eines Stoppers reduziert werden kann.During the discharge of the printing sheet, no ink transfer from the inking units of the printing units to the printing cylinders positioned on the printing plates, so that a built-up during the printing ink layer thickness gradient during the discharge of the printing plates equalized to a relatively high average value. Furthermore, the zonal color is blurred by a traversing movement of inking rollers. This has the consequence that after eliminating a stopper with resumption of printing operation still a variety of spoof sheets is printed until the desired color has re-set. There is therefore a need for a novel method for operating a sheet-fed printing press, by means of which the start-up waste can be reduced after removal of a stopper.

Aus der DE 10 2005 061 512 A1 ist ein Verfahren zum Steuern einer Verarbeitungsmaschine für Bogenmaterial bekannt. In einer mit einzeln antreibbaren, eine Druckform tragenden Plattenzylindern sollen überfärbte Bogen nach einer Druckunterbrechung vermieden werden. Bei einer Druckunterbrechung in einer Kontaktzone des Plattenzylinders zu einem benachbarten Gummituchzylinder wird der Druckkontakt aufgehoben und auf die Farbauftragwalzen des Farbwerks werden vom Plattenzylinder abgestellt. Die Antriebsverbindung zwischen dem Farbwerk und dem Hauptantrieb mit einem Räderzug oder dem eigenmotorischen Direktantrieb des Plattenzylinders wird getrennt und der gesamte Walzenzug des Farbwerks wird stillgesetzt.From the DE 10 2005 061 512 A1 For example, a method of controlling a sheet material processing machine is known. In a with individually driven, carrying a printing plate plate cylinders over-colored sheets should be avoided after a print interruption. In a print interruption in a contact zone of the plate cylinder to an adjacent blanket cylinder, the pressure contact is released and the inking rollers of the inking unit are parked by the plate cylinder. The drive connection between the inking unit and the main drive with a gear train or the direct drive of the plate cylinder is separated and the entire compactor of the inking unit is stopped.

Aus der EP 1 044 910 A2 sind ein Verfahren und eine Vorrichtung zum Anfahren einer Bogendruckmaschine bekannt. Hierbei werden die Bogen von der Oberseite eines Anlegerstapels entnommen und über einen Fördertisch zu einer Anlage gefördert. Das Zuschalten der Druckzylinder in den einzelnen Druckwerken erfolgt entsprechend dem Bogenlauf eines ersten in die Maschine einlaufenden Bogens. Nach einem Stopper wird der Anleger direkt stillgesetzt und die Organe zur Bogenabnahme bleiben angeschaltet. Der den Stopper verursachende Bogen wird vom Fördertisch entfernt und der Anleger wird bei niedriger Grunddrehzahl zugeschaltet. Wenn der erste korrekt an der Anlage liegenden ersten Bogen erfasst wird, wird der Bogeneinlauf freigegeben und die Maschine von der Grunddrehzahl auf die für die Produktion vorgesehene Fortdruckdrehzahl beschleunigt.From the EP 1 044 910 A2 For example, a method and a device for starting a sheet-fed printing press are known. Here, the sheets are removed from the top of a feeder pile and conveyed via a conveyor table to a plant. The connection of the printing cylinder in the individual printing units is carried out according to the sheet travel of a first incoming into the machine sheet. After a stopper, the investor is stopped immediately and the organs for sheet withdrawal remain switched on. The bow causing the stopper is removed from the conveyor table and the feeder is activated at low base speed. When the first first sheet is correctly received, the sheet feed is released and the machine is accelerated from the base speed to the production speed provided for production.

Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde, ein neuartiges Verfahren zum Betreiben einer Bogendruckmaschine zu schaffen.On this basis, the present invention is based on the problem to provide a novel method for operating a sheet-fed press.

Dieses Problem wird durch ein Verfahren gemäß Anspruch 1 gelöst. Erfindungsgemäß wird nach Auftreten eines Stoppers der oder jeder Hauptantrieb mit einer konstanten Drehzahl oder im Tippbetrieb oszillierend mit einer Tippdrehzahl angetrieben, sodass Druckbogen mit Hilfe der mit der konstanten Drehzahl oder der Tippdrehzahl angetriebenen Übertragungszylinder und Gegendruckzylinder aus den Druckwerken ausgeschleust werden können, wohingegen der oder jeder Zu-mit einer kleineren Drehzahl angetrieben wird, sodass die Formzylinder und die Farbwerke der Druckwerke während des Ausschleusens der Druckbogen aus den Druckwerken mit einer kleineren Drehzahl angetrieben werden als die Übertragungszylinder und Gegendruckzylinder der Druckwerke.This problem is solved by a method according to claim 1. According to the invention, after the occurrence of a stopper, the or each main drive is driven at a constant speed or in jogging oscillating with a jogging speed, so that sheet can be discharged from the printing units using the driven at the constant speed or the jog speed transfer cylinder and impression cylinder, whereas the or each to-with a smaller speed is driven, so that the form cylinder and the inking units of the printing units are driven during the discharge of the sheet from the printing units at a lower speed than the transfer cylinders and impression cylinders of the printing units.

Mit dem erfindungsgemäßen Verfahren wird vorgeschlagen, bei dem durch Auftreten eines Stoppers verursachten Ausschleusen von Druckbogen die Formzylinder und Farbwerke der Druckwerke gemeinsam über die Zusatzantriebe der Druckwerke anzutreiben, und zwar mit einer kleineren Drehzahl als die Drehzahl, mit Hilfe derer der oder jeder Hauptantrieb und damit die Gegendruckzylinder sowie Übertragungszylinder der Druckwerke angetrieben wird bzw. werden. Hierdurch kann einer Egalisierung des Farbschichtdickengefälles beim durch einen Stopper verursachten Ausschleusen von Druckbogen aus der Bogendruckmaschine entgegengewirkt werden. Nach Wiederaufnahme des Druckbetriebs kann innerhalb deutlich kürzerer Zeit die gewünschte Farbgebung wieder hergestellt werden, sodass das Drucken von Makulaturbogen drastisch reduziert werden kann.With the method according to the invention is proposed in the caused by the occurrence of a stopper ejection of sheet printing plates and inking units of the printing units together on the auxiliary drives of the printing units, with a lower speed than the speed, with the help of which or each main drive and thus the impression cylinder and transfer cylinder of the printing units is driven or will be. In this way, a leveling of the ink layer thickness difference can be counteracted in the caused by a stopper discharge of sheet from the sheet-fed press. After resuming printing, the desired color can be restored within a much shorter time, dramatically reducing waste sheet printing.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:

Fig. 1:
eine schematisierte Darstellung einer Bogendruckmaschine zur Verdeutlichung des erfindungsgemäßen Verfahrens zum Betreiben einer Bogendruckmaschine.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
Fig. 1:
a schematic representation of a sheet-fed press to illustrate the inventive method for operating a sheet-fed press.

Die hier vorliegende Erfindung betrifft ein Verfahren zum Betreiben einer Bogendruckmaschine, wobei eine Bogendruckmaschine einen Anleger, einen Ausleger sowie mehrere zwischen dem Anleger und dem Ausleger positionierte Druckwerke umfasst. Nachfolgend wird die hier vorliegende Erfindung unter Bezugnahme auf Fig. 1 für eine Bogendruckmaschine beschrieben, die vier Druckwerke 10, 11, 12 und 13 umfasst.The present invention relates to a method for operating a sheet-fed printing press, wherein a sheet-fed press comprises a feeder, a boom and a plurality of printing units positioned between the feeder and the boom. Hereinafter, the present invention will be described with reference to FIG Fig. 1 for a sheet-fed press comprising four printing units 10, 11, 12 and 13.

Jedes der Druckwerke 10, 11, 12 und 13 der Bogendruckmaschine umfasst gemäß Fig. 1 einen Gegendruckzylinder 14, einen Übertragungszylinder 15, ein Farbwerk 16 sowie einen Formzylinder 17. Zusätzlich kann jedes Druckwerk auch ein Feuchtwerk umfassen. Zwischen den Gegendruckzylindern 14 zweier benachbarter Druckwerke 10 und 11, 11 und 12 sowie 12 und 13 ist im gezeigten Ausführungsbeispiel der Fig. 1 jeweils ein Transferzylinder 18 positioniert, um zu bedruckende Bedruckstoffbogen zwischen den einzelnen Druckwerken 10, 11, 12 und 13 zu überführen.Each of the printing units 10, 11, 12 and 13 of the sheet-fed printing machine comprises according to Fig. 1 an impression cylinder 14, a transfer cylinder 15, an inking unit 16 and a forme cylinder 17. In addition, each printing unit may also include a dampening unit. Between the counter-pressure cylinders 14 of two adjacent printing units 10 and 11, 11 and 12 and 12 and 13 is in the illustrated embodiment of the Fig. 1 one transfer cylinder 18 is positioned in each case in order to transfer printing material sheets to be printed between the individual printing units 10, 11, 12 and 13.

Gemäß Fig. 1 weist die Druckmaschine einen Hauptantrieb 19 auf, wobei der Hauptantrieb 19 in den Gegendruckzylinder 14 des Druckwerks 10 eintreibt. Über den Hauptantrieb 19 sind sämtliche Gegendruckzylinder 14, Übertragungszylinder 15 sowie Farbwerke 16 der Druckwerke 10, 11, 12 und 13 sowie die Transferzylinder 18 im Sinne eines geschlossenen Räderzugs antreibbar. Wie Fig. 1 entnommen werden kann, ist es möglich, dass zusätzlich zu dem Hauptantrieb 19 ein weiterer Hauptantrieb 19' vorhanden ist, um dezentral in den geschlossenen Räderzug einzutreiben. Gemäß Fig. 1 ist jedem Formzylinder 17 ein separater und als Direktantrieb 20 ausgebildeter, mit dem oder jedem Hauptantrieb 19, 19' synchronisierbarer Zusatzantrieb zugeordnet, um die Formzylinder 17 aller Druckwerke 10, 11, 12 und 13 eigenmotorisch anzutreiben. Jeder Formzylinder 17 jedes Druckwerks 10, 11, 12 und 13 ist dabei über eine Kupplung 21 vom geschlossenen Räderzug, in den die Gegendruckzylinder 14, die Übertragungszylinder 15 sowie die Transferzylinder 18 eingebunden sind, abkuppelbar.According to Fig. 1 the printing machine has a main drive 19, wherein the main drive 19 drives into the impression cylinder 14 of the printing unit 10. About the main drive 19 are all the impression cylinder 14, transfer cylinder 15 and inking 16 of the printing units 10, 11, 12 and 13 and the transfer cylinder 18 in the sense of a closed Räderzugs drivable. As Fig. 1 can be removed, it is possible that in addition to the main drive 19, a further main drive 19 'is present to drive decentralized in the closed gear train. According to Fig. 1 Each form cylinder 17 is a separate and designed as a direct drive 20, with the or each main drive 19, 19 'synchronizable auxiliary drive assigned to the form cylinder 17 of all printing units 10, 11, 12 and 13 propelled by an engine. Each forme cylinder 17 of each printing unit 10, 11, 12 and 13 is uncoupled via a clutch 21 from the closed gear train, in which the impression cylinder 14, the transfer cylinder 15 and the transfer cylinder 18 are integrated.

Wie Fig. 1 entnommen werden kann, sind neben den Kupplungen 21 weitere Kupplungen 22 vorhanden, mit denen auch die Farbwerke 16 vom geschlossenen Räderzug abgekuppelt werden können.As Fig. 1 can be removed, in addition to the clutches 21 more clutches 22 are provided with which the inking units 16 can be disconnected from the closed gear train.

Zum Drucken werden, wie bereits ausgeführt, sämtliche Gegendruckzylinder 14, sämtliche Transferzylinder 18, sämtliche Übertragungszylinder 15 sowie sämtliche Farbwerke 16 vom Hauptantrieb 19 angetrieben, wobei hierzu die Kupplungen 21 geöffnet und die Kupplungen 22 geschlossen sind. Beim Drucken sind demnach die Formzylinder 17 antriebsseitig vom Hauptantrieb 19 und damit vom Rest der Druckwerke der Druckmaschine entkoppelt, die Farbwerke 16 sind hingegen antriebsseitig an den Hauptantrieb 19 gekoppelt. Zum Drucken werden die Formzylinder 17 von ihren Direktantrieben 20 eigenmotorisch angetrieben. Tritt an einer solchen Bogendruckmaschine ein Stopper auf, so wird zunächst der Anleger vom Hauptantrieb ausgekuppelt, sodass keine neuen Druckbogen in die Bogendruckmaschine eingeschleust werden.For printing, as already stated, all counter-pressure cylinders 14, all transfer cylinders 18, all transfer cylinders 15 and all inking units 16 are driven by the main drive 19, for which purpose the clutches 21 opened and the clutches 22 are closed. When printing the form cylinder 17 are therefore on the drive side of the main drive 19 and thus decoupled from the rest of the printing units of the printing press, the inking units 16, however, the drive side coupled to the main drive 19. For printing, the forme cylinders 17 are driven by their direct drives 20 on their own. If a stopper occurs on such a sheet-fed printing machine, the feeder is first disengaged from the main drive, so that no new printed sheets are introduced into the sheet-fed printing press.

Im Sinne des erfindungsgemäßen Verfahrens wird nach Auftreten eines Stoppers der oder jeder Hauptantrieb 19, 19' mit einer konstanten Drehzahl angetrieben, sodass Druckbogen mit Hilfe der mit der konstanten Drehzahl angetriebenen Übertragungszylinder 15, Gegendruckzylinder 14 sowie Transferzylinder 18 aus den Druckwerken ausgeschleust werden können.For the purposes of the method according to the invention, the or each main drive 19, 19 'is driven at a constant speed after the occurrence of a stopper, so that sheet can be discharged with the help of the constant speed driven transfer cylinder 15, impression cylinder 14 and transfer cylinder 18 from the printing units.

Die Direktantriebe 20 werden hingegen mit einer kleineren Drehzahl als die konstante Drehzahl angetrieben, wobei sowohl die Formzylinder 17 als auch die Farbwerke 16 beim Ausschleusen von Druckbogen von den Direktantrieben 20 der Formzylinder 17 angetrieben werden. Zum Ausschleusen der Druckbogen sind demnach die Kupplungen 21 geschlossen und die Kupplungen 22 geöffnet.The direct drives 20, however, are driven at a lower speed than the constant speed, wherein both the forme cylinder 17 and the inking units 16 are driven in the discharge of printed sheets from the direct drives 20 of the forme cylinder 17. For the discharge of the printed sheets, therefore, the clutches 21 are closed and the clutches 22 are opened.

Beim Ausschleusen von Druckbogen nach Auftreten eines Stoppers werden demnach die Formzylinder 17 sowie Farbwerke 16 der Druckwerke mit einer kleineren Drehzahl angetrieben als die Übertragungszylinder 15, Gegendruckzylinder 14 sowie Transferzylinder 18. Beim Ausschleusen von Druckbogen nach Auftreten eines Stoppers werden demnach die Formzylinder 17 sowie Farbwerke 16 der Druckwerke synchron von den Direktantrieben 20 der Druckwerke angetrieben, sodass bei einer Wiederaufnahme des Druckbetriebs kein Synchronisieren der Farbwerke 16 erforderlich ist.When ejecting printed sheets after the occurrence of a stopper, therefore, the forme cylinder 17 and inking units 16 of the printing units are driven at a lower speed than the transfer cylinders 15, impression cylinders 14 and transfer cylinders 18. In the discharge of printed sheets after the occurrence of a stopper, the forme cylinders 17 and inking units 16 are accordingly the printing units are driven synchronously by the direct drives 20 of the printing units, so that when resuming the printing operation no synchronization of the inking units 16 is required.

Die Farbwerke 16 werden beim Ausschleusen der Druckbogen stets synchron zu den Formzylindern 17 betrieben, sodass dann, wenn zur Wiederaufnahme des Druckbetriebs die Plattenzylinder 17 an den Hauptantrieb 19 synchronisiert werden, automatisch auch die Farbwerke 16 an den oder jeden Hauptantrieb 19, 19' synchronisiert sind, sodass ein Wiederankoppeln der Farbwerke an den oder jeden Hauptantrieb 19, 19' durch Öffnen der Kupplungen 21 und Schließen der Kupplungen 22 mit geringem Aufwand erfolgen kann.The inking units 16 are always operated synchronously to the forme cylinders 17 during discharge of the printed sheets, so that when to resume the Printing the plate cylinder 17 are synchronized to the main drive 19, automatically the inking units 16 to the or each main drive 19, 19 'are synchronized, so a Wiederankoppeln the inking units to the or each main drive 19, 19' by opening the clutches 21 and closing the Clutches 22 can be done with little effort.

Dadurch, dass die Gegendruckzylinder 14, Transferzylinder 18 sowie Übertragungszylinder 15 zum Ausschleusen der Druckbogen mit der konstanten Drehzahl angetrieben werden, können die Druckbogen innerhalb einer relativ kurzen Zeit aus der Bogendruckmaschine ausgeschleust werden. Andererseits verhindert die reduzierte Drehzahl für die Farbwerke 16 sowie Formzylinder 17 eine Egalisierung des farbschichtigen Gefälles sowie eine Überfärbung und eine zonale Verwischung des Farbprofils.Characterized in that the impression cylinder 14, transfer cylinder 18 and transfer cylinder 15 are driven for discharging the sheet at a constant speed, the sheets can be discharged within a relatively short time from the sheet-fed press. On the other hand, the reduced rotational speed for the inking units 16 and the forme cylinder 17 prevents a leveling of the inked gradient as well as overstaining and zonal blurring of the color profile.

Mit der separaten Ansteuerung der Formzylinder 17 sowie Farbwerke 16 über die Direktantriebe 20 der Druckwerke beim Ausschleusen von Druckbogen kann die Drehzahl derselben gegenüber der konstanten Drehzahl beliebig reduziert werden. Im Extremfall können die Farbwerke 16 sowie Plattenzylinder 17 auch angehalten bzw. stillgesetzt werden.With the separate control of the forme cylinder 17 and inking units 16 via the direct drives 20 of the printing units in the discharge of printed sheets, the speed of the same relative to the constant speed can be arbitrarily reduced. In an extreme case, the inking units 16 and plate cylinder 17 can also be stopped or stopped.

Im Sinne der Erfindung ist es ebenfalls möglich, dass nach Auftreten eines Stoppers der oder jeder Hauptantrieb 19, 19' im Tippbetrieb oszillierend mit einer Tippdrehzahl angetrieben wird, sodass Druckbogen mit Hilfe der mit der Tippdrehzahl angetriebenen Übertragungszylinder 15, Gegendruckzylinder 14 sowie Transferzylinder 18 aus den Druckwerken ausgeschleust werden können. Auch in diesem Fall werden die Direktantriebe 20 mit einer kleineren Drehzahl als die Tippdrehzahl angetrieben, wobei sowohl die Formzylinder 17 als auch die Farbwerke 16 beim Ausschleusen von Druckbogen von den Direktantrieben 20 der Formzylinder 17 angetrieben werden. Vorzugsweise ist die Drehzahl, mit der während des Ausschleusens die Direktantriebe 20 angetrieben werden, kleiner als die während des Tippbetriebs gemittelte Drehzahl des oder jedes Hauptantriebs 19, 19'.For the purposes of the invention, it is also possible that after occurrence of a stopper of the or each main drive 19, 19 'is driven in jogging oscillating with a jogging speed, so that sheet with the help of the jogging speed driven transfer cylinder 15, impression cylinder 14 and transfer cylinder 18 from the Printing units can be ejected. Also in this case, the direct drives 20 are driven at a lower speed than the jogging speed, wherein both the forme cylinder 17 and the inking units 16 are driven during the discharge of printed sheets from the direct drives 20 of the forme cylinder 17. Preferably, the speed at which the direct drives 20 are driven during the discharge is smaller than the speed of the or each main drive 19, 19 'averaged during the inching operation.

Unter Bezugnahme auf Fig. 1 wurde die Erfindung für den Fall beschreiben, dass die den Druckwerken zugeordneten Zusatzantriebe als den Formzylindern zugeordnete Direktantriebe ausgeführt sind. Im Unterscheid hierzu ist es auch möglich, dass z. B. als Direktantriebe ausgebildete Zusatzantriebe den Übertragungszylindern zugeordnet sind, die beim Drucken in die Übertragungszylinder eintreiben. Ebenso ist es möglich, dass die Zusatzantriebe den Farbwerken der Druckwerke zugeordnet sind, die beim Drucken in Walzen der Farbwerke eintreiben.With reference to Fig. 1 the invention was described for the case that the additional drives associated with the printing units are designed as direct drives associated with the forme cylinders. In contrast to this, it is also possible that z. B. designed as direct drives auxiliary drives are assigned to the transfer cylinders, which drive into the transfer cylinder during printing. It is also possible that the additional drives are assigned to the inking units of the printing units, which drive into the inking units during printing.

Claims (7)

  1. A method for operating a sheet-fed printing press, namely for ejecting print sheets from the sheet-fed printing press following the occurrence of an emergency stop, wherein the sheet-fed printing press comprises multiple printing couples (10, 11, 12, 13), at least one main drive (19) and multiple additional drives (20) which can be synchronised with the or each main drive (19), wherein each printing couple (10, 11, 12, 13) comprises a forme cylinder (17), a transfer cylinder (15) rolling on the forme cylinder (17), an impression cylinder (18) rolling on the transfer cylinder (15), an inking couple (16) and preferentially a dampening unit, wherein for printing at least the impression cylinders (18) and the transfer cylinders (15) of the printing couples (10, 11, 12, 13) are driven by the or each main drive (19) and other cylinders or rollers of the printing couples (10, 11, 12, 13) by an additional drive (20) each assigned to the respective cylinder or the roller with its own motor, wherein the additional drive (20) can be decoupled from a connection to the main drive (19) by means of a clutch (21), wherein furthermore each inking couple (16) can be coupled to or decoupled from the main drive (19) by means of a further clutch (22), wherein following the occurrence of an emergency stop of the feeders decoupling is carried out,
    characterized in
    that following the occurrence of an emergency stop of the or each main drive (19) driving is carried out with a constant rotational speed or in inching mode oscillatingly with an inching rotational speed, so that print sheets can be ejected from the printing couples (10, 11, 12, 13) with the help of the transfer cylinders (15) and impression cylinders (18) driven with the constant rotational speed or the inching rotational speed, whereas the or each additional drive (20) is driven with a lower rotational speed so that the forme cylinders (17) and the inking couples (16) of the printing couples (10, 11, 12, 13) during the ejecting of the print sheets from the printing couples are driven with a lower rotational speed than the transfer cylinders and impression cylinders of the printing couples (10, 11, 12, 13).
  2. The method according to Claim 1,
    characterized in
    that during the printing the transfer cylinders (15), the impression cylinders (18) and the inking couples (16) of the printing couples (10, 11, 12, 13) with opened clutch (21) and closed further clutch (22) are driven by the or each main drive (19).
  3. The method according to Claim 1 or 2,
    characterized in
    that during the ejecting the forme cylinders and the inking couples of the printing couples (10, 11, 12, 13) with closed clutch (21) and opened further clutch (22) are driven by the additional drive (20) of the respective printing couple (10, 11, 12, 13).
  4. The method according to any one of the Claims 1 to 3,
    characterized in
    that following ejecting of the last print sheet the feeder is coupled to the main drive (19).
  5. The method according to any one of the Claims 1 to 4,
    characterized in
    that the rotational speed, with which the or each additional drive (20) is driven during the ejecting is lower than the constant rotational speed of the or each main drive (19).
  6. The method according to any one of the Claims 1 to 4,
    characterized in
    that the rotational speed with which the or each additional drive (20) is driven during the ejecting is lower than the inching rotational speed of the or each main drive (19).
  7. The method according to Claim 6,
    characterized in
    that the rotational speed with which during the ejecting the or each additional drive (20) is driven is lower than the averaged rotational speed of the or each main drive (19) during the inching operation.
EP20080163954 2007-09-15 2008-09-09 Method for operating a sheet fed printing press Active EP2036726B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710044157 DE102007044157A1 (en) 2007-09-15 2007-09-15 Method for operating a sheet-fed printing machine

Publications (3)

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EP2036726A2 EP2036726A2 (en) 2009-03-18
EP2036726A3 EP2036726A3 (en) 2013-05-29
EP2036726B1 true EP2036726B1 (en) 2014-06-11

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EP (1) EP2036726B1 (en)
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DE (1) DE102007044157A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010012280A1 (en) * 2010-03-22 2011-09-22 Heidelberger Druckmaschinen Ag Method for changing printing plates in rotary presses with multiple printing units
DE102010042556A1 (en) * 2010-10-18 2012-04-19 Manroland Ag printing unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19640649A1 (en) * 1996-10-02 1998-04-16 Roland Man Druckmasch Drive for a sheet printing machine
DE19916470A1 (en) * 1999-04-13 2000-10-26 Roland Man Druckmasch Method and device for starting up a sheet-fed printing machine
DE102005061512A1 (en) * 2005-12-22 2007-07-05 Man Roland Druckmaschinen Ag Process to prepare for resumption of sheet paper color printing following an operational interruption

Also Published As

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JP2009067053A (en) 2009-04-02
DE102007044157A1 (en) 2009-03-26
EP2036726A3 (en) 2013-05-29
EP2036726A2 (en) 2009-03-18

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