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EP1645414B1 - Printing unit of a printing machine and method for changing the printing plate of a plate cylinder - Google Patents

Printing unit of a printing machine and method for changing the printing plate of a plate cylinder Download PDF

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Publication number
EP1645414B1
EP1645414B1 EP05021473A EP05021473A EP1645414B1 EP 1645414 B1 EP1645414 B1 EP 1645414B1 EP 05021473 A EP05021473 A EP 05021473A EP 05021473 A EP05021473 A EP 05021473A EP 1645414 B1 EP1645414 B1 EP 1645414B1
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EP
European Patent Office
Prior art keywords
printing
forme cylinder
drive
actuating signal
plate change
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.)
Not-in-force
Application number
EP05021473A
Other languages
German (de)
French (fr)
Other versions
EP1645414A1 (en
Inventor
Heiko Roth
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
Manroland AG
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Publication date
Application filed by Manroland AG filed Critical Manroland AG
Publication of EP1645414A1 publication Critical patent/EP1645414A1/en
Application granted granted Critical
Publication of EP1645414B1 publication Critical patent/EP1645414B1/en
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1206—Feeding to or removing from the forme cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • 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 printing unit of a printing press according to the preamble of claim 1. Furthermore, the invention relates to a method for carrying out a printing plate change on a forme cylinder of a printing unit according to the preamble of claim 4.
  • Printing units of web-fed rotary printing presses have a plurality of printing units, each printing unit consisting of a transfer cylinder, a forme cylinder and an inking unit and optionally a dampening unit.
  • printing units can have impression cylinders, wherein an impression cylinder can interact with one or more transfer cylinders of different printing units.
  • printing units are also known which do not have counter-pressure cylinders, with such printing units without counterpressure cylinders unrolling the transfer cylinders of two printing couples.
  • On the transfer cylinder blankets are usually on the form cylinders and pressure plates are stretched, which is why the transfer cylinder as a blanket cylinder and the forme cylinder are also referred to as a plate cylinder.
  • the respective forme cylinder can be rotated by a drive of the printing unit into a position or angular position suitable for carrying out the printing plate change, in which the printing plate to be exchanged or exchanged can be detected at a trailing edge or leading edge thereof ,
  • the exact or accurate approach to this for the implementation of the printing plate change or for the detection or gripping of the printing plate to be changed position or angular position is for the implementation of the printing plate change of crucial importance, since the trailing end or leading end of the printing plate can be detected only in a narrowly defined angular range or position range of the forme cylinder.
  • register values or register offset values have the influence on the position of the respective forme cylinder and thus on the start of a position suitable for carrying out a printing plate change, the positional accuracy of the color separations on the printing material based on the outer edges of the printing material being ensured via such register values or register offset values becomes.
  • suitable for printing plate change position or angular position of the forme cylinder plays mainly the so-called circumferential register value or circumferential register offset a crucial role.
  • the circumferential register value is set to zero before the actual printing plate change and the printing unit is driven or adjusted until the circumferential register offset for the forme cylinder assumes the value zero. Only then is rotated by the drive of the printing unit of the forme cylinder in the suitable position for the printing plate change or angular position. After carrying out the printing plate change, the original circumferential register offset or circumferential register value is then set again according to the prior art and the printing unit is adjusted until the circumferential register offset for the forme cylinder is restarted.
  • This zeroing and resetting of the circumferential register value or circumferential register offset before and after the actual printing plate change is time-consuming. For example, it may take up to two minutes for the full registration of the register to be completed, as well as for the provision of the peripheral register. This is disadvantageous for productivity reasons.
  • the present invention is based on the problem to provide a novel printing unit of a printing press and a novel method for performing a printing plate change on a forme cylinder of a printing unit.
  • a printing unit of a printing press according to claim 1.
  • a circumferential register value of the respective forme cylinder is fed as an input variable, wherein the control device or control device determines the actuating signal for the drive and thus for rotation of the forme cylinder in the position or angular position suitable for the printing plate change as a function of the circumferential register value.
  • the actuating signal for the drive for rotating the forme cylinder into the position or angular position suitable for the printing plate change as a function of the circumferential register value of the respective forme cylinder. It is therefore within the meaning of the present invention, the completely independent of a register control device operating according to the prior art drive for rotation of the forme cylinder with the register control device such that the circumferential register value orterrorismsregisterversatz the form cylinder read out and the control device or controller of Drive is supplied.
  • the actuating signal for the drive is accordingly corrected in the sense of the present invention by the circumferential register value or circumferential register offset, so that it is possible to dispense with the time-consuming register zeroing and register reset required by the prior art. This results in a significant time savings for a printing plate change.
  • the inventive method for performing a printing plate change on a forme cylinder of a printing unit is defined in claim 4.
  • the forme cylinder is driven by a drive in one for performing the printing plate change, in particular in a for detecting or gripping the to be changed.
  • Pressure plate, suitable position or angular position is rotated, wherein the drive is given an actuating signal for rotation of the forme cylinder in the suitable position for the printing plate change or angular position, and wherein the actuating signal for the drive and thus for rotation of the forme cylinder in the for the printing plate change suitable position or angular position is determined in dependence on a circumferential register value.
  • FIG Fig. 1 described in more detail.
  • Fig. 1 shows a schematic section of a printing unit 10 of a web-fed rotary printing press, which has two printing units 11 and 12.
  • Each of the printing units 11, 12 has a blanket cylinder or transfer cylinder 13, 14 and a plate cylinder or forme cylinder 15, 16. Between the two transfer cylinders 13 and 14, a web-shaped substrate is passed to print a front side and back of the same.
  • the form cylinders 15, 16 of the two printing units 11, 12 are further assigned an inking unit and preferably a dampening unit, on the one hand printing ink and optionally fountain solution on the forme cylinder 15, 16, namely on the forme cylinders 15, 16 stretched pressure plates apply. On each of the two form cylinder 15 and 16 therefore at least one pressure plate is stretched.
  • a drive 17 is assigned to the printing unit 10 in the embodiment shown.
  • the drive 17 drives via a gear 18 of a plurality of gears 19, 20, 21 and 22 both the two transfer cylinders 13 and 14 and the two forme cylinders 15 and 16 at.
  • the drive 17 is associated with a control device or control device 23, which provides an actuating signal 24 for the drive 17.
  • Each of the forme cylinders 15, 16 is a drive 25, 26 and each of the transfer cylinders 13, 14, a drive 27, 28 assigned.
  • the drives 25, 26, 27 and 28 are designed as linear drives, by means of which the transfer cylinders 13 and 14 and forme cylinders 15 and 16 can be adjusted in the axial direction so as to set register values for the forme cylinders 15 and 16, respectively.
  • the linear actuators 25 and 26 the forme cylinders 15 and 16 are displaceable in the axial direction, whereby a page register value or 9.registerversatz for the forme cylinder 15 and 16 can be adjusted.
  • the transfer cylinders 13 and 14 are adjustable in the axial direction, thereby in cooperation with a helical toothing of the gears 21 and 22, a circumferential register value ortherapeutsregisterversatz for the forme cylinder 15 and 16 can be adjusted.
  • the drives 25, 26, 27 and 28 thus serve to set or provide the circumferential register value and the side register value for the respective forme cylinders 15 and 16 and are therefore part of a register control device.
  • the control device or control device 23 outputs the actuating signal 24 to the drive 17.
  • control device or control device 23 regulate the actuating signal 24 for the drive 17 for rotation of the respective forme cylinder 15 or 16 into the position suitable for the pressure plate change as a function of the respective circumferential register value of the respective forme cylinder 15 or 16 determined.
  • the circumferential register values of the forme cylinders 15 and 16, which are set via the drives 27 and 28 in the exemplary embodiment shown, are provided to the control device or control device 23 as input variables 29 and 30, respectively.
  • the actuating signal 24 for the drive 17 is formed as a function of the peripheral register value of the drive 28 provided as an input variable 30, whereas the forme cylinder 15 is to be rotated into a position suitable for the printing plate change , the actuating signal 24 of the drive 17 is formed as a function of the circumferential register value of the drive 27 provided as an input variable 29.
  • the circumferential register value of the respective forme cylinder to which a printing plate change is to be performed read and in the provision of the control signal 24 for the drive 17, due to which the corresponding forme cylinder 15 and 16 in the suitable for the printing plate change Position or angular position is rotated, considered. This significantly speeds up the printing plate change.
  • the procedure is preferably such that the control device or control device 23 first determines an intermediate control signal independent of the respective circumferential register value, wherein this intermediate control signal coincides with the respective circumferential register value is calculated such that the circumferential register value is added with the opposite sign to the intermediate control signal.
  • control device 23 regardless of the circumferential register value required for the printing plate change angular position of the respective Form cylinder of + 10 ° before and the circumferential register value for this form cylinder + 4 °, the drive motor 17, a control signal 24 is provided, which corresponds to an angular position for the forme cylinder of + 6 °.
  • the circumferential register value of a forme cylinder is compensated in determining the actuating signal for the drive for rotating the respective forme cylinder into the position or angular position suitable for the printing plate change.
  • the circumferential register offset of the respective forme cylinder, on which a printing plate change is to be executed, is therefore automatically compensated in the sense of the present invention in the positioning of the forme cylinder for the printing plate change.
  • required register zeroing and the required after printing plate change register reset can be omitted in the sense of the present invention, so there is a significant time savings for the printing plate change.
  • the invention can be implemented without additional mechanical or electrical components, so that it can be implemented inexpensively on existing printer units.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

Die Erfindung betrifft eine Druckeinheit einer Druckmaschine gemäß dem Oberbegriff des Anspruchs 1. Weiterhin betrifft die Erfindung ein Verfahren zur Durchführung eines Druckplattenwechsels an einem Formzylinder einer Druckeinheit gemäß dem Oberbegriff des Anspruchs 4.The invention relates to a printing unit of a printing press according to the preamble of claim 1. Furthermore, the invention relates to a method for carrying out a printing plate change on a forme cylinder of a printing unit according to the preamble of claim 4.

Druckeinheiten von Rollenrotationsdruckmaschinen, insbesondere von Zeitungsdruckmaschinen, verfügen über mehrere Druckwerke, wobei jedes Druckwerk aus einem Übertragungszylinder, einem Formzylinder und einem Farbwerk sowie gegebenenfalls einem Feuchtwerk besteht. Es sind auch öllose Druckwerke ohne Feuchtwerk bekannt. Weiterhin können solche Druckeinheiten Gegendruckzylinder aufweisen, wobei ein Gegendruckzylinder mit einem oder mehreren Übertragungszylindern unterschiedlicher Druckwerke zusammenwirken kann. Neben Druckeinheiten, die derartige Gegendruckzylinder aufweisen, sind auch Druckeinheiten bekannt, die keine Gegendruckzylinder aufweisen, wobei bei solchen Druckeinheiten ohne Gegendruckzylinder die Übertragungszylinder zweier Druckwerke aufeinander abrollen. Auf den Übertragungszylinder werden in der Regel Gummitücher und auf den Formzylindern werden Druckplatten gespannt, weshalb die Übertragungszylinder auch als Gummizylinder und die Formzylinder auch als Plattenzylinder bezeichnet werden.Printing units of web-fed rotary printing presses, in particular of newspaper printing presses, have a plurality of printing units, each printing unit consisting of a transfer cylinder, a forme cylinder and an inking unit and optionally a dampening unit. There are also oilless printing units without dampening known. Furthermore, such printing units can have impression cylinders, wherein an impression cylinder can interact with one or more transfer cylinders of different printing units. In addition to printing units which have such counter-pressure cylinders, printing units are also known which do not have counter-pressure cylinders, with such printing units without counterpressure cylinders unrolling the transfer cylinders of two printing couples. On the transfer cylinder blankets are usually on the form cylinders and pressure plates are stretched, which is why the transfer cylinder as a blanket cylinder and the forme cylinder are also referred to as a plate cylinder.

Zur Durchführung eines Druckplattenwechsels an einem Formzylinder einer Druckeinheit ist der jeweilige Formzylinder durch einen Antrieb der Druckeinheit in eine zur Durchführung des Druckplattenwechsels geeignete Position bzw. Winkelstellung drehbar, in welcher die zu wechselnde bzw. auszutauschende Druckplatte an einer Nachlaufkante bzw. Vorlaufkante derselben erfasst werden kann. Das exakte bzw. genaue Anfahren dieser für die Durchführung des Druckplattenwechsels bzw. für das Erfassen oder Ergreifen der zu wechselnden Druckplatte geeigneten Position bzw. Winkelstellung ist für die Durchführung des Druckplattenwechsels von entscheidender Bedeutung, da sich das Nachlaufende bzw. Vorlaufende der Druckplatte lediglich in einem eng definierten Winkelbereich bzw. Positionsbereich des Formzylinders erfassen lässt.To carry out a printing plate change on a forme cylinder of a printing unit, the respective forme cylinder can be rotated by a drive of the printing unit into a position or angular position suitable for carrying out the printing plate change, in which the printing plate to be exchanged or exchanged can be detected at a trailing edge or leading edge thereof , The exact or accurate approach to this for the implementation of the printing plate change or for the detection or gripping of the printing plate to be changed position or angular position is for the implementation of the printing plate change of crucial importance, since the trailing end or leading end of the printing plate can be detected only in a narrowly defined angular range or position range of the forme cylinder.

Einfluss auf die Lage des jeweiligen Formzylinders und damit auf das Anfahren einer zur Durchführung eines Druckplattenwechsels geeigneten Position desselben haben des weiteren sogenannte Registerwerte bzw. Registerversatzwerte, wobei über solche Registerwerte bzw. Registerversatzwerte die Lagegenauigkeit der Farbauszüge auf dem Bedruckstoff bezogen auf die Außenkanten des Bedruckstoffs gewährleistet wird. Für das Anfahren der zum Druckplattenwechsel geeigneten Position bzw. Winkelstellung des Formzylinders spielt vor allem der sogenannte Umfangsregisterwert bzw. Umfangsregisterversatz eine entscheidende Rolle.In addition, so-called register values or register offset values have the influence on the position of the respective forme cylinder and thus on the start of a position suitable for carrying out a printing plate change, the positional accuracy of the color separations on the printing material based on the outer edges of the printing material being ensured via such register values or register offset values becomes. For the approach of suitable for printing plate change position or angular position of the forme cylinder plays mainly the so-called circumferential register value or circumferential register offset a crucial role.

Um beim Druckplattenwechsel an einem Formzylinder den Umfangsregisterversatz desselben auszugleichen, wird nach dem Stand der Technik vor dem eigentlichen Druckplattenwechsel der Umfangsregisterwert auf Null gesetzt und die Druckeinheit solange angetrieben bzw. verstellt, bis der Umfangsregisterversatz für den Formzylinder den Wert Null annimmt. Erst anschließend wird durch den Antrieb der Druckeinheit der Formzylinder in die für den Druckplattenwechsel geeignete Position bzw. Winkelstellung gedreht. Nach Durchführung des Druckplattenwechsels wird dann nach dem Stand der Technik der ursprüngliche Umfangsregisterversatz bzw. Umfangsregisterwert wieder eingestellt und die Druckeinheit solange verstellt, bis der Umfangsregisterversatz für den Formzylinder wieder angefahren ist. Diese Nullung sowie Rückstellung des Umfangsregisterwerts bzw. Umfangsregisterversatzes vor sowie nach dem eigentlichen Druckplattenwechsel ist zeitaufwendig. So kann die Umfangsregisternullung sowie Umfangsregisterrückstellung bis zu zwei Minuten in Anspruch nehmen. Dies ist aus Produktivitätsgründen von Nachteil.In order to equalize the circumferential register offset during printing plate change on a forme cylinder, according to the prior art, the circumferential register value is set to zero before the actual printing plate change and the printing unit is driven or adjusted until the circumferential register offset for the forme cylinder assumes the value zero. Only then is rotated by the drive of the printing unit of the forme cylinder in the suitable position for the printing plate change or angular position. After carrying out the printing plate change, the original circumferential register offset or circumferential register value is then set again according to the prior art and the printing unit is adjusted until the circumferential register offset for the forme cylinder is restarted. This zeroing and resetting of the circumferential register value or circumferential register offset before and after the actual printing plate change is time-consuming. For example, it may take up to two minutes for the full registration of the register to be completed, as well as for the provision of the peripheral register. This is disadvantageous for productivity reasons.

Aus der DE 19942619 ist eine Druckmaschine zum schnellen Druckplattenwechsel bekannt, bei der die Formzylinder jeweils über einen separaten Antrieb verfügen, damit diese unabhängig voneinander in einen für den Druckplattenwechsel geeignete Position verbringbar sind.From the DE 19942619 is a printing machine for rapid printing plate change known in which the forme cylinder each have a separate drive, so that they can be independently brought into a suitable position for the printing plate change position.

Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde, eine neuartige Druckeinheit einer Druckmaschine und ein neuartiges Verfahren zur Durchführung eines Druckplattenwechsels an einem Formzylinder einer Druckeinheit zu schaffen.On this basis, the present invention is based on the problem to provide a novel printing unit of a printing press and a novel method for performing a printing plate change on a forme cylinder of a printing unit.

Dieses Problem wird durch eine Druckeinheit einer Druckmaschine gemäß Anspruch 1 gelöst. Erfindungsgemäß ist der Regeleinrichtung bzw. Steuereinrichtung ein Umfangsregisterwert des jeweiligen Formzylinders als Eingangsgröße zuführbar ist, wobei die Regeleinrichtung bzw. Steuereinrichtung das Stellsignal für den Antrieb und damit zur Drehung des Formzylinders in die für den Druckplattenwechsel geeignete Position bzw. Winkelstellung in Abhängigkeit des Umfangsregisterwerts ermittelt.This problem is solved by a printing unit of a printing press according to claim 1. According to the control device or control device, a circumferential register value of the respective forme cylinder is fed as an input variable, wherein the control device or control device determines the actuating signal for the drive and thus for rotation of the forme cylinder in the position or angular position suitable for the printing plate change as a function of the circumferential register value.

Im Sinne der hier vorliegenden Erfindung wird vorgeschlagen, das Stellsignal für den Antrieb zur Drehung des Formzylinders in die für den Druckplattenwechsel geeignete Position bzw. Winkelstellung in Abhängigkeit des Umfangsregisterwerts des jeweiligen Formzylinders zu bestimmen. Es liegt demnach im Sinne der hier vorliegenden Erfindung, den nach dem Stand der Technik völlig unabhängig von einer Registerregeleinrichtung arbeitenden Antrieb zur Drehung des Formzylinders mit der Registerregeleinrichtung derart zu koppeln, dass der Umfangsregisterwert bzw. Umfangsregisterversatz der Formzylinder ausgelesen und der Regeleinrichtung bzw. Steuereinrichtung des Antriebs zugeführt wird. Das Stellsignal für den Antrieb wird demnach im Sinne der hier vorliegenden Erfindung um den Umfangsregisterwert bzw. Umfangsregisterversatz korrigiert, sodass auf die nach dem Stand der Technik erforderliche, zeitaufwendige Registernullung sowie Registerrückstellung verzichtet werden kann. Hierdurch ergibt sich eine deutliche Zeitersparnis für einen Druckplattenwechsel.For the purposes of the present invention, it is proposed to determine the actuating signal for the drive for rotating the forme cylinder into the position or angular position suitable for the printing plate change as a function of the circumferential register value of the respective forme cylinder. It is therefore within the meaning of the present invention, the completely independent of a register control device operating according to the prior art drive for rotation of the forme cylinder with the register control device such that the circumferential register value or Umfangsregisterversatz the form cylinder read out and the control device or controller of Drive is supplied. The actuating signal for the drive is accordingly corrected in the sense of the present invention by the circumferential register value or circumferential register offset, so that it is possible to dispense with the time-consuming register zeroing and register reset required by the prior art. This results in a significant time savings for a printing plate change.

Das erfindungsgemäße Verfahren zur Durchführung eines Druckplattenwechsels an einem Formzylinder einer Druckeinheit ist in Anspruch 4 definiert. Der Formzylinder wird durch einen Antrieb in eine zur Durchführung des Druckplattenwechsels, insbesondere in eine zum Erfassen bzw. Ergreifen der zu wechselnden. Druckplatte, geeignete Position bzw. Winkelstellung gedreht wird, wobei dem Antrieb ein Stellsignal zur Drehung des Formzylinders in die für den Druckplattenwechsel geeignete Position bzw. Winkelstellung vorgegeben wird, und wobei das Stellsignal für den Antrieb und damit zur Drehung des Formzylinders in die für den Druckplattenwechsel geeignete Position bzw. Winkelstellung in Abhängigkeit eines Umfangsregisterwerts ermittelt wird.The inventive method for performing a printing plate change on a forme cylinder of a printing unit is defined in claim 4. The forme cylinder is driven by a drive in one for performing the printing plate change, in particular in a for detecting or gripping the to be changed. Pressure plate, suitable position or angular position is rotated, wherein the drive is given an actuating signal for rotation of the forme cylinder in the suitable position for the printing plate change or angular position, and wherein the actuating signal for the drive and thus for rotation of the forme cylinder in the for the printing plate change suitable position or angular position is determined in dependence on a circumferential register value.

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

Fig. 1:
einen schematisierten Ausschnitt aus einem erfindungsgemäßen Druckmaschinenzylinder.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. An embodiment of the invention will be described, without being limited thereto, with reference to the drawing. Showing:
Fig. 1:
a schematic section of a printing press cylinder according to the invention.

Nachfolgend wird die hier vorliegende Erfindung unter Bezugnahme auf Fig. 1 in größerem Detail beschrieben.Hereinafter, the present invention will be described with reference to FIG Fig. 1 described in more detail.

Fig. 1 zeigt einen schematisierten Ausschnitt aus einer Druckeinheit 10 einer Rollenrotationsdruckmaschine, die über zwei Druckwerke 11 und 12 verfügt. Jedes der Druckwerke 11, 12 verfügt über einen Gummizylinder bzw. Übertragungszylinder 13, 14 sowie einen Plattenzylinder bzw. Formzylinder 15, 16. Zwischen den beiden Übertragungszylinder 13 und 14 wird ein bahnförmiger Bedruckstoff hindurchgeführt, um eine Vorderseite sowie Rückseite desselben zu bedrucken. Den Formzylindern 15, 16 der beiden Druckwerke 11, 12 sind des weiteren ein Farbwerk sowie vorzugsweise ein Feuchtwerk zugeordnet, um einerseits Druckfarbe sowie gegebenenfalls Feuchtmittel auf die Formzylinder 15, 16, nämlich auf den Formzylindern 15, 16 gespannte Druckplatten, aufzutragen. Auf jedem der beiden Formzylinder 15 und 16 ist demnach mindestens eine Druckplatte gespannt. Fig. 1 shows a schematic section of a printing unit 10 of a web-fed rotary printing press, which has two printing units 11 and 12. Each of the printing units 11, 12 has a blanket cylinder or transfer cylinder 13, 14 and a plate cylinder or forme cylinder 15, 16. Between the two transfer cylinders 13 and 14, a web-shaped substrate is passed to print a front side and back of the same. The form cylinders 15, 16 of the two printing units 11, 12 are further assigned an inking unit and preferably a dampening unit, on the one hand printing ink and optionally fountain solution on the forme cylinder 15, 16, namely on the forme cylinders 15, 16 stretched pressure plates apply. On each of the two form cylinder 15 and 16 therefore at least one pressure plate is stretched.

Für den rotatorischen Antrieb der Übertragungszylinder 13 und 14 sowie Formzylinder 15 und 16 der Druckeinheit 10 ist im gezeigten Ausführungsbeispiel der Druckeinheit 10 ein Antrieb 17 zugeordnet. Der Antrieb 17 treibt über ein Getriebe 18 aus mehreren Zahnrädern 19, 20, 21 sowie 22 sowohl die beiden Übertragungszylinder 13 und 14 als auch die beiden Formzylinder 15 und 16 an. Dem Antrieb 17 ist eine Regeleinrichtung bzw. Steuereinrichtung 23 zugeordnet, die ein Stellsignal 24 für den Antrieb 17 bereitstellt.For the rotary drive of the transfer cylinders 13 and 14 and forme cylinders 15 and 16 of the printing unit 10, a drive 17 is assigned to the printing unit 10 in the embodiment shown. The drive 17 drives via a gear 18 of a plurality of gears 19, 20, 21 and 22 both the two transfer cylinders 13 and 14 and the two forme cylinders 15 and 16 at. The drive 17 is associated with a control device or control device 23, which provides an actuating signal 24 for the drive 17.

Gemäß Fig. 1 ist jedem der Formzylinder 15, 16 ein Antrieb 25, 26 sowie jedem der Übertragungszylinder 13, 14 ein Antrieb 27, 28 zugeordnet. Die Antriebe 25, 26, 27 und 28 sind als Linearantriebe ausgebildet, mithilfe derer die Übertragungszylinder 13 und 14 sowie Formzylinder 15 und 16 in axialer Richtung verstellt werden können, um so für die Formzylinder 15 bzw. 16 Registerwerte bzw. Registerversatzwerte einzustellen. Mithilfe der Linearantriebe 25 und 26 sind die Formzylinder 15 und 16 in Axialrichtung verschiebbar, wobei hierdurch ein Seitenregisterwert bzw. Seitenregisterversatz für die Formzylinder 15 und 16 eingestellt werden kann. Über die Linearantriebe 27 und 28 sind die Übertragungszylinder 13 und 14 in axialer Richtung verstellbar, wobei hierdurch in Zusammenwirkung mit einer Schrägverzahnung der Zahnräder 21 und 22 ein Umfangsregisterwert bzw. Umfangsregisterversatz für die Formzylinder 15 und 16 eingestellt werden kann. Die Antriebe 25, 26, 27 und 28 dienen demnach der Einstellung bzw. Bereitstellung des Umfangsregisterwerts sowie Seitenregisterwerts für die jeweiligen Formzylinder 15 bzw. 16 und sind demnach Teil einer Registerregeleinrichtung.According to Fig. 1 Each of the forme cylinders 15, 16 is a drive 25, 26 and each of the transfer cylinders 13, 14, a drive 27, 28 assigned. The drives 25, 26, 27 and 28 are designed as linear drives, by means of which the transfer cylinders 13 and 14 and forme cylinders 15 and 16 can be adjusted in the axial direction so as to set register values for the forme cylinders 15 and 16, respectively. By means of the linear actuators 25 and 26, the forme cylinders 15 and 16 are displaceable in the axial direction, whereby a page register value or Seitenregisterversatz for the forme cylinder 15 and 16 can be adjusted. About the linear actuators 27 and 28, the transfer cylinders 13 and 14 are adjustable in the axial direction, thereby in cooperation with a helical toothing of the gears 21 and 22, a circumferential register value or Umfangsregisterversatz for the forme cylinder 15 and 16 can be adjusted. The drives 25, 26, 27 and 28 thus serve to set or provide the circumferential register value and the side register value for the respective forme cylinders 15 and 16 and are therefore part of a register control device.

Zur Durchführung eines Druckplattenwechsels an einem der Formzylinder 15 bzw. 16 der erfindungsgemäßen Druckeinheit 10 wird der jeweilige Formzylinder 15 bzw. 16 vom Antrieb 17 in eine für den Druckplattenwechsel geeignete Position bzw. Winkelstellung, in welcher die zu wechselnde Druckplatte an einem Vorlaufende bzw. einem Nachlaufende derselben erfasst bzw. ergriffen werden kann, gedreht. Die Regeleinrichtung bzw. Steuereinrichtung 23 gibt hierzu das Stellsignal 24 an den Antrieb 17 aus.To carry out a printing plate change on one of the forme cylinder 15 or 16 of the printing unit 10 according to the invention, the respective forme cylinder 15 or 16 from the drive 17 in a suitable position for the printing plate change or angular position, in which the pressure plate to be changed at a leading end or a Trailing the same can be detected or taken rotated. For this purpose, the control device or control device 23 outputs the actuating signal 24 to the drive 17.

Im Sinne der hier vorliegenden Erfindung wird nun vorgeschlagen, dass die Regeleinrichtung bzw. Steuereinrichtung 23 das Stellsignal 24 für den Antrieb 17 zur Drehung des jeweiligen Formzylinders 15 bzw. 16 in die für den Druckplattewechsel geeignete Position in Abhängigkeit des jeweiligen Umfangsregisterwerts des jeweiligen Formzylinders 15 bzw. 16 ermittelt. Hierzu werden die Umfangsregisterwerte der Formzylinder 15 sowie 16, die im gezeigten Ausführungsbeispiel über die Antriebe 27 und 28 eingestellt werden, der Regeleinrichtung bzw. Steuereinrichtung 23 als Eingangsgrößen 29 bzw. 30 bereitgestellt. Soll der Formzylinder 16 in die für den Druckplattenwechsel geeignete Position gedreht werden, so wird das Stellsignal 24 für den Antrieb 17 in Abhängigkeit des als Eingangsgröße 30 bereitgestellten Umfangsregisterwerts des Antriebs 28 gebildet, soll hingegen der Formzylinder 15 in eine für den Druckplattenwechsel geeignete Position gedreht werden, so wird das Stellsignal 24 des Antriebs 17 in Abhängigkeit des als Eingangsgröße 29 bereitgestellten Umfangsregisterwerts des Antriebs 27 gebildet. Im Sinne der hier vorliegenden Erfindung wird demnach der Umfangsregisterwert des jeweiligen Formzylinders, an welchem ein Druckplattenwechsel durchgeführt werden soll, ausgelesen und bei der Bereitstellung des Stellsignals 24 für den Antrieb 17, aufgrund dessen der entsprechende Formzylinder 15 bzw. 16 in die für den Druckplattenwechsel geeignete Position bzw. Winkelstellung gedreht wird, berücksichtigt. Hierdurch lässt sich der Druckplattenwechsel deutlich beschleunigen.For the purposes of the present invention, it is now proposed that the control device or control device 23 regulate the actuating signal 24 for the drive 17 for rotation of the respective forme cylinder 15 or 16 into the position suitable for the pressure plate change as a function of the respective circumferential register value of the respective forme cylinder 15 or 16 determined. For this purpose, the circumferential register values of the forme cylinders 15 and 16, which are set via the drives 27 and 28 in the exemplary embodiment shown, are provided to the control device or control device 23 as input variables 29 and 30, respectively. If the forme cylinder 16 is to be rotated into the position suitable for the printing plate change, then the actuating signal 24 for the drive 17 is formed as a function of the peripheral register value of the drive 28 provided as an input variable 30, whereas the forme cylinder 15 is to be rotated into a position suitable for the printing plate change , the actuating signal 24 of the drive 17 is formed as a function of the circumferential register value of the drive 27 provided as an input variable 29. For the purposes of the present invention, therefore, the circumferential register value of the respective forme cylinder to which a printing plate change is to be performed, read and in the provision of the control signal 24 for the drive 17, due to which the corresponding forme cylinder 15 and 16 in the suitable for the printing plate change Position or angular position is rotated, considered. This significantly speeds up the printing plate change.

Zur Ermittlung des Stellsignals 24 für den Antrieb 17 zur Drehung des jeweiligen Formzylinders in die für den Druckplattenwechsel geeignete Position bzw. Winkelstellung wird vorzugsweise so vorgegangen, dass die Regeleinrichtung bzw. Steuereinrichtung 23 zuerst ein vom jeweiligen Umfangsregisterwert unabhängiges Zwischenstellsignal ermittelt, wobei dieses Zwischenstellsignal mit dem jeweiligen Umfangsregisterwert derart verrechnet wird, dass der Umfangsregisterwert mit umgekehrtem Vorzeichen zum Zwischenstellsignal addiert wird.In order to determine the actuating signal 24 for the drive 17 for rotating the respective forme cylinder into the position or angular position suitable for the printing plate change, the procedure is preferably such that the control device or control device 23 first determines an intermediate control signal independent of the respective circumferential register value, wherein this intermediate control signal coincides with the respective circumferential register value is calculated such that the circumferential register value is added with the opposite sign to the intermediate control signal.

Gibt zum Beispiel die Steuereinrichtung 23 unabhängig vom Umfangsregisterwert eine für den Druckplattenwechsel erforderliche Winkelstellung des jeweiligen Formzylinders von +10° vor und beträgt der Umfangsregisterwert für diesen Formzylinder + 4°, so wird dem Antriebsmotor 17 ein Stellsignal 24 bereitgestellt, welches einer Winkelstellung für den Formzylinder von + 6° entspricht.For example, is the control device 23 regardless of the circumferential register value required for the printing plate change angular position of the respective Form cylinder of + 10 ° before and the circumferential register value for this form cylinder + 4 °, the drive motor 17, a control signal 24 is provided, which corresponds to an angular position for the forme cylinder of + 6 °.

Im Sinne der Erfindung wird der Umfangsregisterwert eines Formzylinders bei der Ermittlung des Stellsignals für den Antrieb zur Drehung des jeweiligen Formzylinders in die für den Druckplattenwechsel geeignete Position bzw. Winkelstellung kompensiert. Der Umfangsregisterversatz des jeweiligen Formzylinders, an welchem ein Druckplattenwechsel auszuführen ist, wird demnach im Sinne der hier vorliegenden Erfindung bei der Positionierung des Formzylinders für den Druckplattenwechsel automatisch ausgeglichen. Auf die nach dem Stand der Technik vor dem eigentlichen Druckplattenwechsel erforderliche Registernullung sowie die nach dem Druckplattenwechsel erforderliche Registerrückstellung kann im Sinne der hier vorliegenden Erfindung verzichtet werden, sodass sich eine deutliche Zeiteinsparung für den Druckplattenwechsel ergibt. Die Erfindung kann ohne zusätzliche mechanischen oder elektrischen Baugruppen realisiert werden, sodass dieselbe kostengünstig an bestehenden Druckereinheiten umgesetzt werden kann.For the purposes of the invention, the circumferential register value of a forme cylinder is compensated in determining the actuating signal for the drive for rotating the respective forme cylinder into the position or angular position suitable for the printing plate change. The circumferential register offset of the respective forme cylinder, on which a printing plate change is to be executed, is therefore automatically compensated in the sense of the present invention in the positioning of the forme cylinder for the printing plate change. In the context of the prior art prior to the actual printing plate change required register zeroing and the required after printing plate change register reset can be omitted in the sense of the present invention, so there is a significant time savings for the printing plate change. The invention can be implemented without additional mechanical or electrical components, so that it can be implemented inexpensively on existing printer units.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Druckeinheitprinting unit
1111
Druckwerkprinting unit
1212
Druckwerkprinting unit
1313
Übertragungszylindertransfer cylinder
1414
Übertragungszylindertransfer cylinder
1515
Formzylinderform cylinder
1616
Formzylinderform cylinder
1717
Antriebdrive
1818
Getriebetransmission
1919
Zahnradgear
2020
Zahnradgear
2121
Zahnradgear
2222
Zahnradgear
2323
Steuereinrichtungcontrol device
2424
Stellsignalactuating signal
2525
Antriebdrive
2626
Antriebdrive
2727
Antriebdrive
2828
Antriebdrive
2929
Eingangssignalinput
3030
Eingangssignalinput

Claims (6)

  1. A printing unit of a printing machine having at least one printing group (11, 12), wherein the or each printing group has at least one forme cylinder (15, 16), a transfer cylinder (13, 14) and an inking unit, wherein at least one printing plate can be clamped on the forme cylinder (15, 16) of the or each printing group (11, 12) in each case, wherein in order to carry out a printing-plate change on a forme cylinder the respective forme cylinder (15, 16) can be rotated by means of a drive (17) into a position or angular setting that is suitable for carrying out the printing-plate change, in particular for grasping or gripping the printing plate, wherein by means of a regulating device or control device (23) it is possible to preset for the drive (17) an actuating signal (24) for rotating the forme cylinder (15, 16) into the position or angular setting that is suitable for the printing-plate change, and wherein a circumferential-register value of the respective forme cylinder (15, 16) can be supplied as an input variable (29, 30) to the regulating device or control device (23), characterised in that the regulating device or control device (23) is formed in such a way that the actuating signal (24) for the drive (17) and thus for the rotation of the forme cylinder (15, 16) into the position or angular setting that is suitable for the printing-plate change [is] determined as a function of the circumferential-register value that is supplied.
  2. A printing unit according to claim 1, characterised in that for this the regulating device or control device (23) first determines an intermediate actuating signal that is independent of the circumferential-register value, wherein this intermediate actuating signal is offset against the circumferential-register value.
  3. A printing unit according to claim 2, characterised in that in order to provide the actuating signal for the drive (17) the circumferential-register value is added with an opposite sign to the intermediate actuating signal.
  4. Method for carrying out a printing-plate change on a forme cylinder of a printing unit, wherein the forme cylinder is rotated by means of a drive into a position or angular setting that is suitable for carrying out the printing-plate change, in particular into a position or angular setting that is suitable for grasping or gripping the printing plate that is to be changed, and wherein an actuating signal for rotating the forme cylinder into the position or angular setting that is suitable for the printing-plate change is preset for the drive, characterised in that the actuating signal for the drive and thus for the rotation of the forme cylinder into the position or angular setting that is suitable for the printing-plate change is determined as a function of the circumferential-register values that are set at the forme cylinder.
  5. Method according to claim 4, characterised in that first an intermediate actuating signal that is independent of the circumferential-register value is determined, and in that this intermediate actuating signal is offset against the circumferential-register value.
  6. Method according to claim 4 or 5, characterised in that the circumferential-register value is added with an opposite sign to the intermediate actuating signal.
EP05021473A 2004-10-05 2005-09-30 Printing unit of a printing machine and method for changing the printing plate of a plate cylinder Not-in-force EP1645414B1 (en)

Applications Claiming Priority (1)

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DE102004048315A DE102004048315A1 (en) 2004-10-05 2004-10-05 Printing unit of a printing machine and method for performing a printing plate change on a forme cylinder of a printing unit

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EP1645414A1 EP1645414A1 (en) 2006-04-12
EP1645414B1 true EP1645414B1 (en) 2010-12-15

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US (1) US7497163B2 (en)
EP (1) EP1645414B1 (en)
JP (1) JP2006103331A (en)
KR (1) KR20060052033A (en)
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DE (2) DE102004048315A1 (en)

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DE102007032004A1 (en) * 2007-07-09 2009-01-15 Manroland Ag Method for controlling an inkjet printing device
DE102007035689B3 (en) * 2007-07-30 2008-10-16 Koenig & Bauer Aktiengesellschaft Method of arranging printing forms on a forme cylinder of a printing machine
DE102013012708B4 (en) * 2012-09-10 2022-04-21 Heidelberger Druckmaschinen Intellectual Property Ag & Co. Kg Register adjustment during set-up processes on printing presses
NL2023046B1 (en) * 2019-05-01 2020-11-23 Mps Holding Bv Processing station for processing a substrate web

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
DE3644445A1 (en) 1986-12-24 1988-07-07 Roland Man Druckmasch PRINTING UNIT OF A ROLL OFFSET ROTATIONAL PRINTING MACHINE FOR ALTERNATING PRINTS
JPH02103145A (en) * 1988-10-13 1990-04-16 Mitsubishi Heavy Ind Ltd Apparatus for independent driving of printing unit
JP3066614B2 (en) * 1991-09-19 2000-07-17 株式会社小森コーポレーション Automatic plate exchange / plate registration method and device
DE4219870C2 (en) * 1992-06-17 2002-07-18 Heidelberger Druckmasch Ag Automatic plate change procedure
DE4223583B4 (en) * 1992-07-17 2005-02-24 Heidelberger Druckmaschinen Ag Method for driving the plate change in a sheet-fed press and drive for performing the method
DE19623224C1 (en) 1996-06-11 1997-09-11 Roland Man Druckmasch Offset printing machine operating drive
DE19636703C2 (en) 1996-09-10 1998-12-03 Roland Man Druckmasch Device for the automatic control of a printing plate change process
US5904093A (en) * 1997-08-07 1999-05-18 Heidelberger Druckmaschinen Ag Apparatus and method for changing images during operation of a printing press
DE59900090D1 (en) * 1998-01-20 2001-06-21 Baumueller Anlagen Systemtech Operating method for a printing press with a plurality of functions and control engineering arrangement
US6205926B1 (en) * 1998-10-23 2001-03-27 Heidelberger Druckmaschinen Ag Method for on the run plate changes in offset web-fed press
DE10046367B4 (en) * 2000-09-20 2005-10-13 Koenig & Bauer Ag Drive a printing unit
DE10206891A1 (en) * 2001-03-12 2002-09-19 Heidelberger Druckmasch Ag Printing unit drive for web-fed rotary printing machine, has line shaft drive motor for jointly driving transfer cylinders of two printing units
DE10260491A1 (en) * 2002-12-21 2004-07-01 Koenig & Bauer Ag Device for adjusting the position of a rotating body with direct drive

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DE502005010669D1 (en) 2011-01-27
DE102004048315A1 (en) 2006-04-06
KR20060052033A (en) 2006-05-19
CN1757510A (en) 2006-04-12
EP1645414A1 (en) 2006-04-12
CN1757510B (en) 2010-09-29
US7497163B2 (en) 2009-03-03
JP2006103331A (en) 2006-04-20

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