EP2919993A1 - Système de surveillance pour l'orientation de groupes d'impression d'une machine à imprimer en ligne - Google Patents

Système de surveillance pour l'orientation de groupes d'impression d'une machine à imprimer en ligne

Info

Publication number
EP2919993A1
EP2919993A1 EP13771100.8A EP13771100A EP2919993A1 EP 2919993 A1 EP2919993 A1 EP 2919993A1 EP 13771100 A EP13771100 A EP 13771100A EP 2919993 A1 EP2919993 A1 EP 2919993A1
Authority
EP
European Patent Office
Prior art keywords
printing
unit
offset
sensor unit
medium
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.)
Granted
Application number
EP13771100.8A
Other languages
German (de)
English (en)
Other versions
EP2919993B1 (fr
EP2919993B2 (fr
Inventor
Frank Westhof
Michael Vosseberg
Clemens Brinkmann
Heiner Bücker
Udo Neumann
Bülent Dil
Gundolf Bietmann
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
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Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP2919993A1 publication Critical patent/EP2919993A1/fr
Publication of EP2919993B1 publication Critical patent/EP2919993B1/fr
Application granted granted Critical
Publication of EP2919993B2 publication Critical patent/EP2919993B2/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B41F33/0081—Devices for scanning register marks
    • 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
    • B41P2213/90—Register control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/50—Marks on printed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/50—Marks on printed material
    • B41P2233/52—Marks on printed material for registering

Definitions

  • the present invention relates to a monitoring system for the alignment of printing units of a series printing machine, a suitably equipped series printing machine and a monitoring method for the alignment of printing units of a series printing machine.
  • printing units are arranged in a row in the form of a series printing press.
  • the supply to the individual printing units takes place sequentially, so that between the individual printing units, which are responsible for each different colors, a corresponding free conveying length of the pressure medium is present.
  • the printing medium is often provided by a paper roll and rolled out there and is web-shaped.
  • print markers are used.
  • the print markers are part of the print image or are printed on the print medium at the side or at the edge of the print image. This can be determined by appropriate sensors, in particular by sensor devices with sensor units for each printing unit, the exact position of the printed image on the print medium.
  • the associated printing unit settings are aligned, that is to say in particular a mechanical displacement of the individual pressure rollers in their axial direction.
  • a disadvantage of known series printing machines and corresponding monitoring systems with sensor devices is that they are limited in terms of their recognition width in order to provide the necessary high speed in terms of recognition at high printing speeds available.
  • different properties of the print medium may occur due to batch differences. These are in particular changes in the mechanical stability, preferably based on the tensile strength or the modulus of elasticity of the pressure medium. This variation can lead to so-called sheet travel. This means that the two lateral edges of the print medium can withstand different levels of tension applied by the press. This shifts a corresponding pressure medium laterally, that is transversely to the conveying direction, along the respective printing units.
  • This shift error or this offset increases over the course of the entire series printing machine, ie from printing unit to printing unit. These are very large differences in the range of several millimeters compared to small offset situations in the course of a batch in a feed roll. Due to the relatively small detection areas of the sensor unit, it may now happen that due to the large offset during reel change, no recognition of the print markers can take place. In such a case, the machine stops and an operator of this series printing machine must manually adjust the corresponding offset data and, accordingly, manually align the printing units. By stopping the machine, however, at least the length of the pressure medium present in the machine at that time is produced as rejects or so-called waste.
  • An inventive monitoring system is used to align printing units of a series printing machine, in particular a gravure printing machine.
  • a monitoring system has a sensor device with at least one sensor unit for each printing unit. These are designed to detect the position of a print mark on the print medium. For the subsequent alignment of the printing unit is this Information about the position of the print marker or the print mark used.
  • a monitoring system according to the invention is characterized in that at least one sensor unit arranged downstream of the pressure curve of a first sensor unit is movable transversely to the conveying direction of the pressure medium. The results of the monitoring by the sensor device are used for the axial alignment of the respective printing unit.
  • a controlled system is provided which adapts the respective printing unit to the detected offset of the printing medium.
  • the adaptation ie the coupling between the alignment of the respective printing unit and the sensor device, is preferably carried out in an electronic, in particular in a digital manner.
  • each sensor unit In contrast to known monitoring systems, an adjustability with regard to the monitoring range of each sensor unit can take place here.
  • This relates in particular to so-called downstream sensor units, that is not the first sensor unit.
  • This mobility is in particular a translational mobility.
  • a mobility transverse to the conveying direction is to be understood in particular to mean a movement substantially perpendicular to the conveying direction.
  • an automatic or at least semi-automatic adjustment of the downstream sensor units can now be set to a high offset. If a first offset is detected by the first sensor unit at the first printing unit, which is in particular outside a standard offset in continuous operation, this offset can be used for a repositioning of the downstream movable sensor units. In the case of a roll change, ie if a significantly increased offset is to be expected, such a monitoring system can be put into a special programming so that a movement takes place transversely to the conveying direction of the downstream sensor units based on the detected offset of the first sensor unit. This can reduce the probability that the downstream sensor units no longer recognize the print markers of the preceding printing units.
  • the sensor unit has arrived in a suitable monitoring position. Accordingly, the probability is too to provide the orientation of the printing units by the information of the individual sensor units in the roll change significantly increased compared to static sensor units in known monitoring systems. Due to the fact that in this way alignment of the printing units can be done quickly and easily even in reel change situations, the reel change can be carried out in particular at a consistently high printing speed and especially without stopping and the production of rejects with respect to the printing medium.
  • a printing medium in the context of the present invention are in particular on a roll storable print media in question. It may be z. B. to paper or plastic, in particular PE or PET act. Of course, the printing medium can be formed in one or more layers or one or more layers.
  • the sensor unit can be designed for the detection of the print mark in a variety of ways. In particular, however, it has a possibility of generating a light spot and associated evaluation optics in order to be able to perform a corresponding position determination of the print mark on the print medium at a sufficiently high speed.
  • the sensor unit in addition to the actual sensor electronics and associated control electronics and wiring, z. B. for the power supply or the signal forwarding on.
  • the signal forwarding can also be done wirelessly in order to make the mobility of the sensor unit even more easily available.
  • the at least one movable sensor unit is translationally movable by means of an actuator, in particular with an electric motor.
  • an electric motor serves the automatic or semi-automatic mobility of the sensor unit.
  • a gear ratio can be made available in order to be able to ensure positionally accurate adjustability of the sensor unit via the actuator system.
  • An electric motor can represent a particularly cost-effective and simple embodiment of such an actuator.
  • other transmission variants for the transmission of force to the sensor unit to the translatory movement possible.
  • movable cable sheaths may be provided.
  • the sensor device and / or each sensor unit can have a corresponding control unit in order to carry out a monitoring method completely or partially, as will be explained in more detail later.
  • the at least one movable sensor unit is movable along a guide, in particular along a guide rail.
  • the guide serves to predefine the path of movement of the sensor unit. In particular, it is a translational guide or guide rail.
  • a guide rail is used for.
  • B. the sliding bearing movement of the sensor unit along this guide rail.
  • the mechanical design of such a guide can of course be adjustable, so that preferably also different large paths of movement for each sensor unit can be realized.
  • the movement of the sensor unit along such a guide can also be designed as a traversing movement.
  • z. B in the form of an electric motor, and other actuators, in particular a lever kinematics, are used.
  • the at least one movable sensor unit is designed to be movable as a function of an offset which has been detected by the sensor unit which precedes the pressure profile.
  • This allows pre-positioning of the movable sensor unit.
  • This advance movement is based on a signal communication between at least two mutually separate sensor units, so that the detected offset of a preceding sensor unit can be transmitted to the downstream movable sensor unit.
  • This can be done in a simple way or controlled in a closed loop control.
  • the sensor unit and / or the sensor device may have a corresponding control unit. So there is a preparation for the expected minimum offset, so that, as already explained, an increase in the probability of detection of the offset print mark is achieved.
  • the at least one movable sensor unit has a possible movement path, which is formed transversely to the conveying direction in the range of approximately ⁇ 2% relative to the width of the pressure medium.
  • a possibility of a movement path is indicated, which can compensate for a sufficient mobility with respect to the expected offset.
  • printing widths of the pressure medium z. B. values in the range between about 1000 and about 1500 mm in question.
  • about ⁇ 10 mm to about ⁇ 20 mm are advantageous as possible movement paths.
  • the individual movable sensor units are arranged centrally relative to the corresponding movement path.
  • a control unit is provided for the execution of a monitoring method according to the invention which will be explained later. Accordingly, a monitoring system according to the invention brings the same advantages as will be explained later with reference to a monitoring method according to the invention.
  • an in-line printing machine having at least two printing units arranged in series for printing on a printing medium.
  • An in-line printing machine according to the invention is characterized in that at least one monitoring device according to the present invention is provided for the alignment of the printing units. Accordingly, a series printing machine according to the invention brings the same advantages as have been explained in detail with reference to a monitoring system according to the invention.
  • the subject of the present invention is furthermore a monitoring method for the alignment of printing units of a series printing machine, in particular according to the present invention, comprising the following steps:
  • a pre-positioning of the following sensor unit of the second printing unit can take place. If an offset is detected in the first printing unit, the second sensor unit of the second printing unit can already be displaced in the direction of the detected offset in preparation for this offset.
  • This monitoring method is in particular a special method which is used in a roll change of the printing medium. At high default probabilities, z. As when creating a sheet run, the print medium can be ensured in this way that even with a relatively large offset on the first printing unit, the other printing units are prepared for this large offset and can recognize the print mark also.
  • This pre-positioning increases the security of the monitoring and thus reduces the likelihood of a machine stop. Thus, as has already been explained, the stop of the machine and the corresponding scrap or the so-called waste can be significantly reduced.
  • An advantage can be further achieved if, in a monitoring method according to the invention, after the detection of the offset of a print mark on the print medium in a first printing unit, all sensor units arranged downstream in the printing process are moved transversely to the conveying direction of the print medium in the direction of the detected offset.
  • sensor units of the third, fourth and following printing units can also be used as of first detection of an offset on the first printing unit to be moved accordingly.
  • This also large offsets with correspondingly smaller actuators or a weaker power actuators with respect to the high printing speed can be moved sufficiently quickly by the Vorabpositionierung. This can be done to reduce the cost and the necessary space of the individual sensor units and the associated actuators. It can also be ensured that the row printing machine can be operated at full printing speed even in the case of reel change situations.
  • a monitoring method can be further developed such that the movement of the sensor unit of the second printing unit takes place at least by the amount of the detected offset of the print mark on the first printing unit.
  • the minimum path of the movement along the path of movement is predefined in this way. The movement thus takes place at least by the detected offset. It can namely be assumed that the offset increases over the course of the printing press, ie from printing unit to printing unit in the same direction.
  • the Vorabpositionierung by at least the amount of the detected offset for the following printing unit thus allows the minimum positioning of the at least expected further offset in this second printing unit.
  • a larger travel than the amount of the detected offset can be used.
  • This increase in movement can z. B. on further information, eg
  • a further advantage can be achieved if, in a monitoring method according to the invention, a sensor unit of a third printing unit is moved transversely to the conveying direction of the printing medium by an amount which is composed of the detected offset and the detected residual offset. At the latest after passing the print mark through the second printing unit, both the offset and the detected residual offset are known. Accordingly, an expected residual offset for the own printing unit can be determined for the further displacement movements of the movable sensor units via the residual offset. Thus, over the Amount of the detected offset beyond a method of the movable sensor units of the following printing units done. In this way, an even more accurate pre-positioning of the following sensor units can be carried out.
  • the movement of the sensor unit of the second printing unit in the direction of the detected offset also takes place when no print mark is detected at the second printing unit.
  • the print mark is not recognized.
  • this does not necessarily mean a complete stop of the press. Rather, the further movement of the sensor unit on the second printing unit by the information about the direction of the detected offset compensate for this deficiency again and recognize after a short movement phase and the print mark on the second printing unit again.
  • a complete stop of the in-line printing machine and the corresponding rejects can be avoided by a monitoring method according to the invention even if the possibility of detecting the print mark is lost.
  • An inventive monitoring method can be further developed such that it is executed as a special program for the duration of a roll change of the print medium.
  • a normal program accordingly, other parameters for the positioning or movement of the individual sensor units can be used.
  • the measurement engine so the alignment of a light spot and the evaluation by the corresponding optics may differ in the special program according to the present invention from the normal program.
  • the duration of the roll change is at least the time that is necessary to have completely within the series printing machine printing medium of the newly used role. It is also advantageous if, in a monitoring method according to the invention after the end of the roll change, in particular after a predetermined print length, the special program is terminated.
  • a predetermined print length can z. B. be one to two machine lengths of the pressure medium.
  • the sensor devices or the sensor units After completion of the special program can be further controlled or further regulated in the already discussed normal program.
  • the normal program returns to the normal position, the sensor devices or the sensor units remain at the positions at which they were or were positioned at the end of the special program of the monitoring method.
  • the time offset to the first printing unit in particular as a relation between the printing run length between the two printing units and the printing speed, is taken into account.
  • the respectively downstream sensor unit still remains at its previous position until, for example, when the roll has changed, the new material has also reached this sensor unit. The previous material will usually not yet have the sheet travel. Thus, premature movement of the respective sensor unit would possibly result in the loss of the ability to detect these print marks.
  • the quotient of the printing length between the two printing units and the printing speed is formed as a relation for the time offset. In this case, in particular, the necessary time for the movement of the sensor unit can be taken into account.
  • the downstream sensor units are moved with time offset, in particular temporally accurate to the detected offset and thus pre-positioned not only locally, but also temporally.
  • 1 shows a first embodiment of a series printing machine according to the invention
  • 2a shows a first situation of a monitoring method according to the invention
  • FIG. 2b shows a second situation of a monitoring method according to the invention according to the situation according to FIG. 2a, FIG.
  • Fig. 2c shows a further situation of a monitoring method according to the invention according to the situation according to Fig. 2b and
  • Fig. 3 shows an embodiment of print marks on a printing medium in correlation to a sensor unit.
  • a series printing machine 100 is shown schematically.
  • this embodiment of the row printing machine 100 is configured with a monitoring system 10 according to the invention.
  • This has a control unit 40, which is connected in a signal-communicating manner with in each case one sensor unit 22a, 22b and 22c of a sensor device 20.
  • the sensor units 22a, 22b and 22c are each associated with a printing unit 100a, 100b and 100c.
  • the individual sensor units 22a, 22b and 22c are of essentially identical design and have a guide 24 for translatory movement transversely to the conveying direction F.
  • an actuator 30 in the form of an electric motor is provided in each case.
  • FIGS. 2a to 2c show a possibility of carrying out a monitoring method according to the invention. They are referred in particular schematically to the embodiment of a row printing machine 100 according to FIG. Thus, all three FIGS. 2a to 2c show a situation with three sensor units 22a, 22b and 22c, which correlate with associated printing units 100a, 100b and 100c (not shown). It can also be seen that a print mark 210 is applied to a print medium 200, not shown.
  • the process begins at the time of roll change of the printing medium 200. Due to the roll change and corresponding change by batch differences of the modulus of elasticity of the printing medium 200, an offset V is detected at the first printing unit 1 10a of the sensor unit 22a. At the time of detection of this offset V, the two further sensor units 22b and 22c immediately and automatically move in the direction of this offset V and in one embodiment of this monitoring method exactly by the amount of the offset V. The result is shown in FIG. 2b, so that the downstream sensor units 22b and 22c have already been prepositioned by the offset V.
  • the pre-positioning of the sensor unit 22b can now also be used to directly detect the residual offset R of the printed mark 210.
  • a movement of the third sensor unit 22c is again effected by this residual offset R. This can be carried out in an identical manner for further printing units, so that the pre-positioning can almost eliminate the loss of the ability to recognize the print mark 210.
  • FIG. 3 shows a possibility of how different print marks 210 can be arranged on the print medium 200.
  • These have in the direction of the conveying direction F at the beginning, ie at its upper end, a straight edge and at its lower end an oblique edge.
  • an orientation transverse to the conveying direction F done.
  • this lateral offset V which is the axial offset with respect to the respective printing unit, can be detected.
  • This determination result is used as an input variable for the controlled alignment of the respective printing unit 10a, 110b and 110c.
  • each individual printing unit 1 10a, 1 10b and 1 10c can be applied to the print medium own brand 210. Also clearly visible in Fig. 3 is the freedom of movement along a path of movement S for this sensor unit 22a.
  • a guide 24 is provided in frame construction, so that an even more accurate pre-positioning along the movement path S is possible.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Handling Of Sheets (AREA)

Abstract

L'invention concerne un système de surveillance (10) pour l'orientation de groupes d'impression (110a, 110b, 100c) d'une machine à imprimer en ligne (100). Ce système comporte un dispositif de détection (20) pourvu d'au moins une unité de détection (22a, 22b, 22c) pour chaque groupe d'impression (110a, 110b, 100c), afin de détecter la position d'un repère d'impression (210) sur un support d'impression (200). Ce système est caractérisé par le fait qu'au moins une unité de détection (22b, 22c) montée en aval d'une première unité de détection (22a) tout au long de l'impression est mobile transversalement au sens d'avance (F) du support d'impression (200).
EP13771100.8A 2012-11-13 2013-09-26 Système de surveillance pour l'orientation de groupes d'impression d'une machine à imprimer en ligne Active EP2919993B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012110910.9A DE102012110910B4 (de) 2012-11-13 2012-11-13 Überwachungssystem für die Ausrichtung von Druckwerken einer Reihendruckmaschine
PCT/EP2013/070057 WO2014075841A1 (fr) 2012-11-13 2013-09-26 Système de surveillance pour l'orientation de groupes d'impression d'une machine à imprimer en ligne

Publications (3)

Publication Number Publication Date
EP2919993A1 true EP2919993A1 (fr) 2015-09-23
EP2919993B1 EP2919993B1 (fr) 2017-03-22
EP2919993B2 EP2919993B2 (fr) 2019-12-18

Family

ID=49293614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13771100.8A Active EP2919993B2 (fr) 2012-11-13 2013-09-26 Système de surveillance pour l'orientation de groupes d'impression d'une machine à imprimer en ligne

Country Status (5)

Country Link
EP (1) EP2919993B2 (fr)
CN (1) CN104853922B (fr)
DE (1) DE102012110910B4 (fr)
ES (1) ES2628370T5 (fr)
WO (1) WO2014075841A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2982105T3 (es) * 2015-04-10 2024-10-14 Omet Srl Sistema de registro para unidades de impresión de una máquina de impresión rotativa con un registro de impresión de ajuste manual
JP6909063B2 (ja) * 2017-06-15 2021-07-28 住友重機械工業株式会社 情報処理装置、印刷システム及び情報処理方法

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DE3220093C2 (de) 1982-05-28 1985-05-02 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einrichtung zur Farbdichtemessung an laufenden, bahnförmigen Druckmaterialien
DE3811359C2 (de) 1988-04-02 1994-06-16 Heidelberger Druckmasch Ag Vorrichtung zur Positionierung eines Meßkopfes für Passerabweichungen beim Offsetdruck
DE4109062A1 (de) * 1991-03-20 1992-09-24 Hueck & Co Verfahren zum passergenauen, mehrfarbigen bedrucken einer materialbahn, insbesondere einer folienbahn
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DE4321179A1 (de) 1993-06-25 1995-01-05 Heidelberger Druckmasch Ag Verfahren und Einrichtung zur Steuerung oder Regelung von Betriebsvorgängen einer drucktechnischen Maschine
IL113702A0 (en) 1994-05-13 1995-08-31 Advanced Vision Tech Ltd General control for multiple color press devices
DE59809058D1 (de) 1997-06-02 2003-08-28 Wifag Maschf Registerhaltige Abstimmung von Druckzylindern einer Rollenrotationsmaschine
DE10261059B4 (de) * 2002-12-24 2006-04-13 Eltromat Gmbh Verfahren und Vorrichtung zum Messen und Regeln eines Längs- und Seitenregisters sowie einer Druckbild-Parallelität eines Druckregisters in einer Mehrfarbendruckmaschine
DE10319770A1 (de) 2003-05-02 2004-12-09 Koenig & Bauer Ag Verfahren zur Regelung der Farbdichte einer von einer Druckmaschine auf einem Druckträger aufgebrachten Farbe und Vorrichtung zur Regelung verschiedener für den Druckprozess einer Druckmaschine relevanter Parameter
DE10352619B4 (de) * 2003-07-11 2012-09-27 Koenig & Bauer Aktiengesellschaft Verfahren und Vorrichtung zur Beeinflussung des Fan-Out-Effektes
TWI252809B (en) * 2004-05-05 2006-04-11 Bobst Sa Method and device for initial adjustment of the register of the engraved cylinders of a rotary multicolour press
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EP2269824B1 (fr) * 2009-07-01 2012-09-12 ELTROMAT GmbH Procédé et dispositif de surveillance de l'ajustement du traitement de matériaux en forme de bandes dans des installations
DE102009046536B4 (de) * 2009-11-09 2013-08-14 Windmöller & Hölscher Kg Rotationsdruckmaschine mit zumindest einem Farb- oder Druckwerk
CN202071485U (zh) * 2011-05-24 2011-12-14 深圳扬丰印刷有限公司 一种放卷自动对准装置
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Also Published As

Publication number Publication date
CN104853922A (zh) 2015-08-19
ES2628370T5 (es) 2020-06-29
DE102012110910B4 (de) 2014-10-16
EP2919993B1 (fr) 2017-03-22
EP2919993B2 (fr) 2019-12-18
ES2628370T3 (es) 2017-08-02
DE102012110910A1 (de) 2014-05-15
CN104853922B (zh) 2017-06-13
WO2014075841A1 (fr) 2014-05-22

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