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EP1877257A2 - Procede pour piloter et/ou reguler un reperage dans une machine a imprimer, ainsi que dispositif pour piloter et/ou reguler un reperage circonferentiel - Google Patents

Procede pour piloter et/ou reguler un reperage dans une machine a imprimer, ainsi que dispositif pour piloter et/ou reguler un reperage circonferentiel

Info

Publication number
EP1877257A2
EP1877257A2 EP06754751A EP06754751A EP1877257A2 EP 1877257 A2 EP1877257 A2 EP 1877257A2 EP 06754751 A EP06754751 A EP 06754751A EP 06754751 A EP06754751 A EP 06754751A EP 1877257 A2 EP1877257 A2 EP 1877257A2
Authority
EP
European Patent Office
Prior art keywords
printing
printing unit
cylinder
register
units
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.)
Withdrawn
Application number
EP06754751A
Other languages
German (de)
English (en)
Inventor
Oliver Frank Hahn
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE200510021148 external-priority patent/DE102005021148B3/de
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1877257A2 publication Critical patent/EP1877257A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1882—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling longitudinal register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering 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
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B41F13/14—Registering devices with means for displacing the cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/28—Folding in combination with cutting
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/512—Marks, e.g. invisible to the human eye; Patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to methods for controlling and / or regulating a register in a printing press and to a device for controlling and / or regulating a peripheral register according to the preamble of claims 1, 2 and 25, respectively.
  • the invention relates in particular to such rotary printing machines in which the printing cylinders of the printing units have on their cylindrical surface a channel extending in the longitudinal direction of the cylinder, which serves for the attachment of printing plates, blankets o.
  • Kanalüberrollungen bending vibrations are excited in the printing cylinders, which lead to fluctuations in the compressive stress in the printing gap. Depending on the size of these pressure fluctuations, these can lead to stripes in the printed product. The wider the channel, the greater the interference caused by such channel overruns or channel beats.
  • the adjustment of the circumferential register of a printing unit or a printing unit has an influence on the relative position of the channels of adjacent printing cylinders, for example, a plate cylinder and a blanket cylinder.
  • these channels are exactly opposite, so that then the effective channel width in the case of equal width channels of the actual channel width corresponds and is determined in the case of different widths of the width channels of the broader channels.
  • the circumferential register is adjusted relative to this initial position, it may come at certain register settings to a significant increase in the effective channel width and thus to a stronger channel impact, which leads to amplified vibration stripes in the printed image.
  • the type of printing units in particular double printing units on the one hand and satellite printing units on the other hand, there are different situations with regard to the occurrence of channel beats:
  • double printing occurs on the one hand, a channel impact in rubber cylinder plate cylinder nip of each printing unit and on the other hand, a channel impact in the blanket cylinder rubber cylinder nip.
  • a channel impact in rubber cylinder plate cylinder nip of each printing unit occurs on the one hand, a channel impact in the blanket cylinder rubber cylinder nip.
  • the initial position of the adjustment or adjustment of the circumferential register of 0 mm in Gummizylinder- plate cylinder nip of the rubber cylinder channel and the plate cylinder channel centered on each other wherein rubber cylinder channel and plate cylinder channel usually have different widths.
  • the two rubber cylinder channels (each having the same width) also centrally from each other.
  • the difference of the channel widths of the rubber cylinder channel and the plate cylinder channel is smaller than twice the maximum possible circumferential register adjustment, then the effective channel width increases with certain register settings.
  • the relative position (angle) of blanket cylinder to blanket cylinder or blanket cylinder to blanket cylinder changes during register adjustment.
  • the circumferential register adjustment is accomplished on the plate cylinder alone, so the relative position of blanket cylinder is changed to plate cylinder.
  • this can be achieved with a common drive of the entire bridge printing unit (full toothing), e.g. be achieved by the helical gearing of blanket cylinder to plate cylinder, wherein the axial movement of a gear causes an angular change between the two cylinders.
  • the rubber cylinder channel comprises the plate cylinder channel on both sides with 0.5 mm difference, so the width of the rubber cylinder channel is decisive for the magnitude of the vibration excitation.
  • a double printing unit is considered in which the circumferential register adjustment is accomplished via a common adjustment of plate cylinder and blanket cylinder, that is, the relative position of the two blanket cylinders changes with respect to one another.
  • the prior art for example, by a common drive for each of the two blanket cylinder plate cylinder pairs on the software side via the drive control. It results in accordance with appropriate considerations in the blanket cylinder rubber cylinder nip (with opposite equal, each maximum circumferential register adjustment of the two printing units), a maximum effective channel width of 8.2 mm.
  • the above also applies in principle to satellite printing units as far as the plate cylinder rubber cylinder nip is concerned.
  • the considerations with regard to the blanket cylinder rubber cylinder nip play no role here after the impression cylinder has no channel.
  • each printing unit of a printing unit has its own main drive (pairwise drive).
  • the blanket cylinder and the plate cylinder of each printing unit are interlocked with each other.
  • the adjustment of the circumferential register is done here by the software on the angular position of the drive.
  • both cylinders are rotated in the same way, so their relative angular position to each other does not change, there is no channel broadening.
  • each printing cylinder of a printing unit (satellite or bridge) has its own main drive, so there is a single drive both the plate cylinder and the blanket cylinder.
  • either only the Angular position of the plate cylinder can be adjusted; This then results in the situation described above in connection with the full gearing. Or else the angular positions of plate cylinder and blanket cylinder are adjusted together; This then results in the situation described above in connection with the pairwise drive.
  • WO 2004/028805 A1 discloses a method for driving a processing machine, such as a web-fed rotary printing machine is known, wherein a plurality of longitudinal shaft-free units such.
  • B. a folder are driven independently by drives. Signals of a Leitachsposition a virtual master axis are guided in a signal line connecting the drives and the drives each an offset is assigned, which defines a permanent, but variable displacement of a desired angular position relative to the Leitachsposition.
  • DE 44 33 905 A1 discloses a method for controlling a circumferential register in a printing machine with at least one printing unit comprising at least two printing units. In this case, the circumferential register deviations of all printing units are determined and the printing units of the at least one printing unit are readjusted individually.
  • the invention has for its object to provide methods for controlling and / or regulating a register in a printing press and a device for controlling and / or regulating a circumferential register.
  • the advantages attainable with the invention are in particular that less paper waste and / or higher quality of the printed products is achieved due to the adjustment of the register deviations with two different cylinders (the total amount of register deviation is divided into at least two partial amounts).
  • the advantage in one embodiment is that the main part of the register deviation to be readjusted, namely the mean value of the register deviation present in each printing unit, is controlled by the regulation of the post-processing unit, that is to say in particular the folding station z. B. folding unit, is compensated, so that the printing unit axes then only have to compensate for the remaining difference.
  • the post-processing unit or the folding station is regulated relative to the material web, even before the error resulting in the printing units comes to fruition. This results in a control of the pressure-to-cut register with a superior reaction rate.
  • the achievable with the present invention consist in another embodiment (which can also be combined with the cut register control) in particular that all Drives of a printing unit, in particular on the software side, are subjected to a common adjustment path according to the determined mean value of the register deviations in all printing units of the printing unit, and the individual register adjustment of the individual printing unit of the printing unit is carried out via the circumferential adjustment of the plate cylinder only with the size of the differential adjustment path, which results from the calculated difference of the mean value and the circumferential register deviations of the individual printing units.
  • the necessary circumferential register adjustment path arises only to a comparatively small extent (eg smaller than 0.5 mm) from non-systematic (statistical) deviations as a result of the plate bending and the exposure from the desired position.
  • a large part of the adjustment serves to compensate for the web guide, web elongation and Paper roll differences in paper length differences between successive printing locations of printing units arranged along the substrate web.
  • the majority of the required shareholderssregisterverstellwegs thus results from the printing material or paper web run between successive blanket paper nips a printing material and thus relates to the angular position of all printing units of a printing unit to the same extent.
  • the pass setting of only N-1 printing units (N integer number of the printing units of the printing press) is necessary.
  • one of the plurality of printing units of the printing machine is determined as a reference printing unit, that the circumferential registers of the printing units of this reference printing unit are set to "0", and that only the printing units the other pressure units are readjusted.
  • the selected reference printing unit may be any of the plurality of printing units.
  • a significant advantage of the invention is that it can be implemented as a pure software solution and thus can be inexpensively retrofitted to existing installations.
  • Fig. 1 is a schematic representation of a web-fed rotary printing press
  • Fig. 2 is a schematic representation of a first embodiment of a printing unit
  • Fig. 3 is a schematic representation of a second embodiment of a printing unit
  • FIG. 4 shows a schematic illustration of a web-fed rotary printing press with a plurality of webs and a plurality of printing units
  • Fig. 5 is a schematic representation of a folding apparatus.
  • a web 01 e.g. B. a printing material 01, for example, a web of material 01, in particular a paper web 01 of the not shown, in a reel splitter 02 stored stock roll unwound and then by several printing units 03; 04; 05; 06 out, in which the web 01 can be multicolored and printed on both sides.
  • the material web 01 is passed through a drying and / or cooling device 07 and finally in a post-processing unit 08, z. B cut in a folding unit 08 by means of a cutting cylinder, not shown in this figure and optionally folded by means of a folding cylinder, also not shown.
  • the web-fed rotary printing press is controlled by a control device, not shown in more detail, which, for. B. a designated generally by the reference numeral 26 device for controlling the pressure-to-cut register, hereinafter referred to briefly as a device for controlling the cut register 26, and the otherwise not shown in detail data connections with the individual components of the machine in Connection is and essentially in a non-illustrated control panel, z. As a control room, can be accommodated.
  • Each printing unit 03; 04; 05; 06 may comprise a forme cylinder 13, a transfer cylinder 14 and at least one impression cylinder, wherein each impression cylinder is also designed as a transfer cylinder 14, which in turn cooperates with a forme cylinder 13 (Fig.2) for the production of printed on both sides.
  • All printing units 03; 04; 05; 06 are mutually mechanically independent and each driven by drives 09, in particular position-controlled electric motor 09 driven.
  • Each of the printing units 03; 04; 05; 06 is in the case of the embodiment as a double printing unit 03; 04; 05; 06 is formed and therefore comprises two opposing printing units 11; 12 each with a cylinder 13, z. B. form cylinder 13, in particular plate cylinder 13 and a cylinder 14, z. B. transfer cylinder 14, in particular rubber cylinder 14, wherein the two Rubber cylinder 14 facing each other form a printing gap for the paper web 01 to be printed.
  • Both the plate cylinder 13 and the blanket cylinder 14 have on their cylindrical surface extending in the longitudinal direction of the respective cylinder 13 and 14, not shown channel, in the case of the plate cylinder 13 for fixing the pressure plate (s) and in the case of the blanket cylinder 14 is used to attach the blanket or blankets.
  • the method is a control. This can be done either manually, i. H.
  • the pass error is detected by the printer or via an automatic deviation detection, eg. B. sensors, be extended as a regulation.
  • the control and / or regulation of the circumferential register comprises for each printing unit 1 1; 12 of the printing unit 03; 04; 05; 06, for example, a device for determining the circumferential register deviation Ui; U 2 , in particular by means of a sensor 16; 17, in a conventional manner, for example by means of optical sensors based on printed on the web 01 register marks and / or the printed image, the calculatorsregisterabweichonne U 1 and U 2 between at least two, a same side of the web 01 printing printing units 1 1 or 12 of two printing units 03; 04; 05; 06 and / or between two printing units 1 1; 12 outside a printing unit 03; 04; 05; 06 and / or at least one printing unit 11; 12 and a knife cylinder of the folding unit 08 determined.
  • the printing units 11; 12 of the printing unit 03; 04; 05; 06 each have a common main drive 09 and an individual circumferential register adjustment by means of z. B. each of a register motor RM for each of the two plate cylinder 13.
  • the printing unit 03; 04; 05; 06 can also be designed as a satellite printing unit.
  • exemplary assumed channel widths namely plate cylinder channel 3.1 mm and rubber cylinder channel 4.1 mm, is e.g. a circumferential register adjustment of +1 mm in the printing unit 11 and +1, 5 mm in the printing unit 12 of the printing unit 03 in comparison to another printing unit 04; 05; 06 required.
  • the obtained by averaging adjustment of the main drive 09 of the printing unit 03 relative to another printing unit 04; 05; 06 then M +1, 25 mm, which no channel broadening arises because the blanket cylinders 14 to each other within the printing unit 03 are not adjusted.
  • FIG. 3 A further exemplary embodiment of the invention is shown in FIG. 3 and will be described in more detail below.
  • each cylinder 13 This drive 21 is preferably designed as a position-controlled electric motor 21 and is preferably mechanically independent of other cylinders, d. H. in particular, he is not in positive drive connection to another cylinder.
  • the mean value M is now used as a manipulated variable for controlling and / or regulating all drives 21 of the printing unit 03. This provides the common adjustment of the printing units 1 1; 12 of the printing unit 03 is.
  • the differential, for each printing unit 1 1; 12 individual amount of the circumferential register adjustment is now as a manipulated variable for individual Nachêtn and / or readjusting the plate cylinder drive each of the printing units 11; 12 of the printing unit 03 used. This represents the differential, individual displacement of the printing units 1 1; 12 of the printing unit 03 is.
  • the device for controlling the cut register 26 comprises at least one sensor device, for. B. a sensor 16; 17; 27, which in a conventional manner by means of optical sensors based on printed on the web 01 register marks and / or printed image, the register deviations ⁇ US the calculatorsver accounts or register error of the individual printing units 11; 12 of the printing units 03; 04; 05; 06 determined relative to particular a cutting cylinder 33 of the folding unit 08, ie z. B. ⁇ US1 in the printing unit 11 or 12 of the printing unit 03, ⁇ US2 in the printing unit 11 or 12 of the printing unit 04, ⁇ US3 in the printing unit 11 or 12 of the printing unit 05 and ⁇ US4 in the printing unit 11 or 12 of the printing unit 06.
  • the sensor 27 for determining the cutting register with the sensor 16; 17 be identical and / or used together to determine the Circular.
  • the size of the possible cut register fluctuations depends, inter alia, on the web length and the amount of dye and dampening solution applied to the material web 01.
  • the expected register fluctuations are greater, the longer the web path to the post-processing unit 08 and / or the greater the applied colorant and dampening solution volume.
  • This difference D is now used as a manipulated variable for the control of the printing units 1 1; 12 of the printing units 03; 04; 05; 06 used.
  • the sensors 17, 16, 27 usually determines the respective circumferential offsets of the cylinders of the printing units 03; 04; 05; 06 as a measure of length. If, according to another embodiment, the sensor system 16, 17, 27 outputs a register signal only when a certain, presettable threshold is exceeded, the weighted register path to be adjusted together can be calculated in accordance with the triggering material web 01 and can be regulated away via the folding unit 08 and the difference D can in each case via the drive axes of the printing units 03; 04; 05 and 06 are eliminated.
  • the invention is not limited to printing presses with four printing units.
  • the number of printing units is i, where i is an integer greater than 2.
  • the invention is also applicable to printing machines in which other units than folding units 08 are used as post-processing units 08, for example, cutters, perforators, punches, collecting devices o. The like. Furthermore, such an independently driven unit of Switzerlandzen, Skipslittern, register rollers o. The like. Be formed.
  • all cut register deviations are sensed by a plurality of, in particular all, webs detected in a printing press. From this, a mean deviation of several, in particular all cut register is calculated and a cutting cylinder of Nachbearbeitungsstation 08 (which crosses several / all tracks) phasenver Hor to this mean deviation in the circumferential direction relative to the printing units. So z. For example, it is achieved that much of the register offset is reduced even before this part of the register offset occurs in the post-processing station.
  • an amount of register deviation and / or cut register deviation is decomposed into at least two sub-amounts.
  • two different cylinders are phase-shifted in the circumferential direction.
  • the circumferential register adjustment of the printing units and the cutting register adjustment can be combined.

Landscapes

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

Abstract

L'invention concerne un procédé permettant de piloter et/ou de réguler un repérage dans une machine à imprimer comportant au moins une unité d'impression qui présente au moins deux groupes d'impression. Chaque groupe d'impression présente une paire de cylindres comprenant au moins un cylindre porte-clichés et un cylindre de transfert. Le cylindre porte-clichés d'un premier groupe d'impression est décalé en phase, d'une valeur, dans le sens périphérique, pour ajuster le repérage. Le cylindre de transfert du premier groupe d'impression est décalé en phase, d'une autre valeur, dans le sens périphérique. La valeur du cylindre porte-clichés est différente de celle du cylindre de transfert et les deux valeurs sont différentes de 0.
EP06754751A 2005-05-04 2006-04-19 Procede pour piloter et/ou reguler un reperage dans une machine a imprimer, ainsi que dispositif pour piloter et/ou reguler un reperage circonferentiel Withdrawn EP1877257A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005020728 2005-05-04
DE200510021148 DE102005021148B3 (de) 2005-05-06 2005-05-06 Verfahren zur Regelung eines Umfangsregisters in einer Druckmaschine
PCT/EP2006/061653 WO2006117291A2 (fr) 2005-05-04 2006-04-19 Procede pour piloter et/ou reguler un reperage dans une machine a imprimer, ainsi que dispositif pour piloter et/ou reguler un reperage circonferentiel

Publications (1)

Publication Number Publication Date
EP1877257A2 true EP1877257A2 (fr) 2008-01-16

Family

ID=36968750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06754751A Withdrawn EP1877257A2 (fr) 2005-05-04 2006-04-19 Procede pour piloter et/ou reguler un reperage dans une machine a imprimer, ainsi que dispositif pour piloter et/ou reguler un reperage circonferentiel

Country Status (3)

Country Link
US (1) US7963225B2 (fr)
EP (1) EP1877257A2 (fr)
WO (1) WO2006117291A2 (fr)

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EP1980396A3 (fr) * 2007-04-10 2011-08-24 Robert Bosch Gmbh Procédé destiné déplacer des modules de machines d'impression
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US20140096696A1 (en) * 2012-10-05 2014-04-10 Nela Ternes Register Group, Inc. Open loop control system and methods for color print registration

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Also Published As

Publication number Publication date
US7963225B2 (en) 2011-06-21
WO2006117291A3 (fr) 2006-12-28
US20080105153A1 (en) 2008-05-08
WO2006117291A2 (fr) 2006-11-09

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