EP1593502B1 - Methode und Vorrichtung zur anfänglichen Regelung der Registerhaltigkeit von Tiefdruckzylindern in einer Mehrfarben-Rotationsdruckmaschine - Google Patents

Methode und Vorrichtung zur anfänglichen Regelung der Registerhaltigkeit von Tiefdruckzylindern in einer Mehrfarben-Rotationsdruckmaschine Download PDF

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Publication number
EP1593502B1
EP1593502B1 EP04405282A EP04405282A EP1593502B1 EP 1593502 B1 EP1593502 B1 EP 1593502B1 EP 04405282 A EP04405282 A EP 04405282A EP 04405282 A EP04405282 A EP 04405282A EP 1593502 B1 EP1593502 B1 EP 1593502B1
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EP
European Patent Office
Prior art keywords
cylinders
engraved
angular
printing
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04405282A
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English (en)
French (fr)
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EP1593502A1 (de
Inventor
Lucio Giancaterino
Alexandre Rawyler
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.)
Bobst Mex SA
Original Assignee
Bobst SA
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Filing date
Publication date
Application filed by Bobst SA filed Critical Bobst SA
Priority to EP04405282A priority Critical patent/EP1593502B1/de
Priority to AT04405282T priority patent/ATE353282T1/de
Priority to DE602004004633T priority patent/DE602004004633T2/de
Publication of EP1593502A1 publication Critical patent/EP1593502A1/de
Application granted granted Critical
Publication of EP1593502B1 publication Critical patent/EP1593502B1/de
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/025—Registering devices
    • 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
    • B41P2233/10—Starting-up the machine
    • B41P2233/13—Pre-registering

Definitions

  • the present invention relates to a method of initial adjustment of the peripheral coincidence of the engraved rolls of successive printing units of a polychromatic rotary printing press according to a given work, these rolls being connected to the same d-tree. by means of respective clutches, according to which an angular mark is placed on each cylinder and aligns this mark with a fixed point relative to the engraved pattern on the cylinder, and these angular positions are measured and stored with respect to a zero point .
  • This invention also relates to a device for implementing this method.
  • the different cylinders are arranged in precisely determined angular positions with respect to one another. This position is a function of the band length between the different printing units and the format of the engraved cylinders, that is to say their peripheral length. If we consider the zero point of the impression of each engraved cylinder, it is necessary to determine its position with respect to the zero position of the other engraved cylinders, as a function of the length of strip separating two successive printing units and the peripheral length of the engraved cylinders, so that the successive impressions of the different colors on the printed strip coincide perfectly.
  • No. 3,963,902 also proposes a method and a device for replacing the printing cylinders of a polychromatic rotary press driven by a common transmission line, in known angular registration positions for a type working periodically.
  • each cylinder is brought to the angular indexing position by means of a differential device driven by a motor which rotates until the angular position of the cylinder coincides with the indexed position. This operation is performed for each cylinder. This adjustment can be made without the presence of a printing tape in the machine which avoids paper or cardboard losses.
  • the object of the present invention is to overcome, at least in part, the aforementioned drawbacks.
  • the present invention firstly relates to a method of initial adjustment of the peripheral coincidence of the engraved cylinders of successive printing units of a polychromatic rotary printing press according to a determined work, according to claim 1.
  • the characteristics relating to the work to be performed On the basis of these characteristics, double-sided work, number and choice of colors, therefore choice of cylinders in work, type of drying, in particular, the path of the band to be printed is defined. So the lengths of the tape between the cylinders are known, which allows to know the relative angular positions of the cylinders, which correspond to the rest of the division of these lengths by the format (peripheral length) of the cylinder. Generally all engraved cylinders have the same format.
  • the initial setting time, for a work performed for the first time on the printing press, of all the cylinders which may comprise, for example, ten cylinders does not exceed 1 minute without any band loss. .
  • This method therefore makes it possible to give exceptional flexibility to the printing press and this not only when it comes to taking over a job for which the initial setting has already been made and has been memorized, but from the initial setting. .
  • the single figure of the appended drawing illustrates, schematically and by way of example, an embodiment of the method of initial adjustment of the peripheral coincidence of the engraved cylinders of the successive printing units of a polychromatic rotary printing press. function of a determined work.
  • a full-color rotogravure printing machine comprises a printing line which consists of several engraved cylinders each of which print a different color on a strip of paper or continuous cardboard which is unwound in the machine. At the moment when each cylinder deposits the ink on the support, its color must be perfectly in register with the others. Otherwise, the different colors of the printed pattern are shifted.
  • the maximum error acceptable for the register between the colors is 0.1 mm when the machine is in production, for the initial setting of the cylinders, object of the present invention, an accuracy of ⁇ 5 mm is acceptable since the system of locating can correct this error through a compensator that changes the tape length between two printing points.
  • the principle of initial adjustment according to the invention is based on the automatic registration of a point on the engraved cylinders which must be fixed relative to the printed frame on the format. Once the position of this point is located on each cylinder, the automation sequence calculates the displacement to be made on each cylinder to bring it in phase with a reference cylinder which corresponds to the cylinder which prints the first color, this displacement depends the tape path between the engraved cylinders that depends on the configuration given to the machine for a given job.
  • each engraved cylinder C1..Cn carries a CA cam aligned at a fixed angular position corresponding to that of a CR registration mark printed on each engraved cylinder C1..Cn.
  • the angular position of this cam and therefore that of the registration cross CR is detected by an inductive sensor S connected to the same bus coupler BC as the pneumatic clamp CL.
  • An incremental encoder G is associated with one of the drive shafts of the engraved cylinders C1..Cn. It is a counter at 4096 pulses / revolution, making one revolution per revolution of engraved cylinder C1..Cn. Since all drive shafts of engraved cylinders are constantly rotating and at the same speed, a single encoder makes it possible to know the angular positions of all the engraved cylinders C1..Cn.
  • Each engraved cylinder prints a registration mark, which is designated RM for the first color which is the reference color printed by the first engraved cylinder C1 and which is designated CM for the engraved cylinder C2.
  • RM, CM are read by RC photocells arranged so that their reading point is at a determined distance PR from the printing point on the engraved cylinder C1..Cn.
  • the strip distance between the respective print points N and R of the engraved cylinder Cn and the reference cylinder C1 corresponds to d (N-R).
  • LY indicates the distance on the engraved cylinder, between the CR registration mark of each cylinder and the RM, CM reference mark printed on the tape.
  • the machine comprises for its control an HMI human-machine interface, which may take the form of a control touch screen, connected to the programmable electronics MCS and to the control electronics of the register REG.
  • HMI human-machine interface which may take the form of a control touch screen
  • the REG system uses the incremental encoder G and the photocells RC for reading the registration marks RM, CM printed on the printing tape.
  • the programmable electronics MCS and the register control electronics REG use the information given by the incremental encoder G.
  • the main drive motor M of the printing machine is associated with a frequency converter D which receives a control signal CTR of the programmable electronics MCS for machine control.
  • This variable frequency drive is used to control the main motor M in position during the initial calibration process of the engraved cylinders C1..Cn.
  • a GM motor encoder also connected to the MCS control electronics allows vector control, which serves to slave the motor in speed and position.
  • the inking carriage (not shown) is introduced into the machine regardless of the lateral position and the angular position of the cylinders C1..Cn.
  • the job information is used to define the passage of the tape to be printed in the machine. They must be entered even on printing groups of cylinders C1..Cn which are not selected and which are between two selected groups. All this information is entered using the keypad constituting the human-machine HMI interface.
  • the clamps CL of the printing groups of the cylinders C1..Cn selected are closed, so that these cylinders are kinematically integral with the transmission shaft MS, therefore the motor M.
  • the closing operation of the clamps performs the same time the lateral positioning of the cylinders.
  • the lateral positioning of the cylinder allows to bring the support of the cam CA in front of the inductive sensor S. Therefore, once the cylinder starts to rotate, the angular position of the cam CA can be detected by the sensor S.
  • the lateral positioning is done using the ML engine.
  • this motor is brushless type Eex-d, controlled in position by the programmable electronic control unit MCS of the machine. When the machine is in production this motor Ml is used for the control of the lateral register.
  • the initial angular setting operation of the engraved cylinders C1..Cn to adjust the peripheral coincidence of the engraved cylinders of the successive printing units can then begin using a central control located near the HMI interface.
  • the automatic sequence starts with a slow motor rotation to the index of the incremental encoder G which has the effect of zeroing the electronic counting register located in the control electronics MCS.
  • the incremental encoder G follows the angular position of the main axis downstream of the reduction gears Z1 / Z2.
  • the electronic counting register is reset with the index signal (Z, / Z) after at most one revolution of the cylinders C1..Cn.
  • the incremental encoder G rotates as long as the transmission shaft MS is driven by the main motor M, regardless of whether an engraved cylinder C1..Cn is in use or not in the printing unit where it is mounted.
  • each cylinder C1..Cn is marked at the instant when the cam CA passes in front of the sensor S.
  • the marking operation of all the cams CA must be made in the space of one revolution of the engraved cylinders C1..Cn.
  • the information given by the sensor S of each engraved cylinder C1..Cn goes up to the programmable electronics MCS by the BUS1 fieldbus whose reading period is about 5msec.
  • the bus coupler BC which makes it possible to multiplex the information is located near the sensor S.
  • the programmable electronics MCS initiates a calculation which determines the phase shift to be given to each engraved cylinder C1..Cn to register it with the reference cylinder C1 which prints the first color.
  • the calculation of successive phase shifts is based on the band lengths between the printing units and on the printed format, that is to say on the peripheral length of the engraved cylinders. The lengths are calculated based on the choices the operator made using the HMI interface keyboard.
  • the result of this calculation is a list of OL values expressed in degrees.
  • the programmable electronics MCS orders the list OL in the increasing direction.
  • the programmable electronics MCS rotates the main motor M to bring the first engraved cylinder C1..Cn of the list OL in the desired angular position. Once the position is reached, the motor M stops and the clamp CL of the engraved cylinder C1..Cn is opened, as illustrated for the C2 cylinder. As a result, the cylinder C2 is uncoupled from the transmission shaft MS.
  • the adjustment process continues by positioning all the other engraved cylinders C1..Cn in the order of increasing phase shifts according to the established list OL and using the same procedure as that used for the first engraved cylinder C2.
  • the advantage of this procedure is that the engraved cylinders C1..Cn which have a greater angular displacement to make benefit from the angular displacements of the engraved rolls which preceded them in the list OL.
  • This procedure makes it possible to position all the engraved cylinders C1..Cn in one revolution of the encoder G (3 main motor revolutions). This sequence requires at most a run time of 1 min for a print line comprising 10 selected printer groups.
  • the programmable electronics MCS determines the final position of the engraved cylinders C1..Cn with respect to the index of the encoder G, this function makes it possible to to know the position of the registration cross CR of each engraved cylinder C1..Cn with respect to the index of the coder G.
  • the information on the CR position for each engraved cylinder C1..Cn is sent to the register control system REG with the information relating to the distance PR in mm between the printing point of a given engraved cylinder C1..Cn and the reading point of the RC tracking cell associated with this engraved cylinder.
  • the register control system REG uses the two aforementioned information relating to the position of the CR mark of each cylinder C1..Cn and to the distance PR between the printing point and the reading point, in combination with the knowledge of the distance LY between the printed registration mark CM with respect to the marks CR of the cylinders engraved C1..Cn.
  • This distance LY is introduced by the operator at the time of the configuration of a job.
  • these three pieces of information are necessary and sufficient to set the opening of a reading window of the register control system REG at the time of the passage of the marks RM, CM on the printed format in the field of view of the RC reading photocells connected to the REG register control system. Calculations of these parameters including sending to the register control system REG through BUS2 require an overall time of less than 2 sec.
  • the machine can be turned on, the colors will be in phase and the register control system REG is synchronized to read the registration marks RM, CM in the window set on the passage of these marks in the field of vision of the RC reading photocells.
  • the cut can be wedged with respect to the printing of the printing machine.
  • the registration of the cutting module will be obtained by the REG register control system of the printing machine using a digital oscilloscope.
  • the method according to the present invention thus allows initial adjustment of a full color printing machine completely automatically and without tape consumption.
  • the total duration of the implementation of this adjustment operation does not exceed 2 minutes

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

Claims (6)

  1. Verfahren zur anfänglichen Einstellung der Umfangsausrichtung von Tiefdruckzylindern (C1..Cn) der aufeinander folgenden Druckgruppen einer Mehrfarben-Rotationsdruckmaschine abhängig von einem bestimmten Auftrag, wobei die Zylinder mit ein und derselben Übertragungswelle (MS) mittels entsprechender Kopplungen (CL) verbunden sind, wobei jedem Zylinder (C1..Cn) eine Winkelmarkierung (CA) zugeordnet ist und diese Winkelpositionen bezüglich eines Nullpunkts gemessen und gespeichert werden, dadurch gekennzeichnet, dass die Merkmale des auszuführenden Auftrags gespeichert werden, dass die jeweiligen Winkelverlagerungen der Tiefdruckzylinder (C2..Cn) in Bezug zu einem Bezugszylinder (C1) abhängig vom Auftrag indiziert werden, indem die Bandlänge, welche zwei Druckpunkte zweier Druckgruppen zweier aufeinander folgender Tiefdruckzylinder (C1..Cn) für den bestimmten Auftrag trennt, bestimmt wird, dass diese Länge durch die Umfangslänge des bezüglich der Bewegungsrichtung des Bands stromabwärts angeordneten Tiefdruckzylinders geteilt wird und dass der Rest der Division genutzt wird, um die Winkelindizierung zu bestimmten, dass dann jeder Zylinder (C1..Cn) nacheinander in seine so bestimmte indizierte Position gebracht wird, dass er von der Übertragungswelle (MS) abgekoppelt wird und dass alle eingestellten Zylinder gleichzeitig wieder mit der Übertragungswelle verbunden werden.
  2. Verfahren nach Anspruch 1, wobei, bevor jeder Tiefdruckzylinder (C1..Cn) in seine indizierte Position gebracht wird, die Indizierungswerte in aufsteigender Ordnung klassifiziert werden und die Zylinder gemäß der durch die Klassifikation der indizierten Werte vorgegebenen Folge in ihre jeweiligen indizierten Positionen gebracht werden.
  3. Verfahren nach einem der vorangehenden Ansprüche, wobei jedem Tiefdruckzylinder (C1..Cn) eine Winkeldruckmarkierung (RM, CM) zugeordnet wird, die für die Winkelposition der Gravur kennzeichnend ist, und wobei ein Lesepunkt der Winkeldruckmarkierungen (RM, CM) der Tiefdruckzylinder in einem bestimmten Abstand (PR) zu dem Druckpunkt der jeweiligen Tiefdruckzylinder festgelegt wird und dieser Abstand (PR) sowie die Winkelpositionen der Winkelmarkierungen (CR) der Tiefdruckzylinder (C1..Cn) gespeichert werden.
  4. Verfahren nach Anspruch 3, wobei die Winkelpositionen der jeweiligen Tiefdruckzylinder (C1..Cn), welche den Öffnungen der jeweiligen Lesefenster während der Passage der Winkeldruckmarkierungen (RM, CM) der jeweiligen Druckgruppen für die Steuerung des synchronisierten Registers entsprechen, vermittels der jeweiligen Winkelpositionen (CR) der Tiefdruckzylinder (C1..Cn), der die Druckpunkte der jeweiligen Tiefdruckzylinder (C1..Cn) trennenden Abstände (PR), der Lesepunkte der jeweiligen Druckmarkierungen (RM, CM) und der Abstände (LY) zwischen den Winkelmarkierungen (CR) der jeweiligen Tiefdruckzylinder (C1..Cn) und den Winkeldruckmarkierungen (RM, CM), welche für die Winkelpositionen der Gravuren der jeweiligen Zylinder (C1..Cn) kennzeichnend sind, bestimmt werden.
  5. Vorrichtung zum Ausführen des Verfahrens zur anfänglichen Einstellung nach Anspruch 1, umfassend eine von einem Hauptmotor (M) angetriebene Übertragungswelle (MS), eine Vielzahl von Tiefdruckzylindern (C1..Cn), Kopplungsvorrichtungen (CL) zum selektiven Verbinden der Tiefdruckzylinder (C1..Cn) mit der Übertragungswelle (MS), eine Markierung (CA) einer bestimmten Winkelposition jedes Tiefdruckzylinders (C1..Cn), einen Detektor (S) dieser Markierung, einen Inkremental-Kodierer (G) der Winkelposition der Tiefdruckzylinder, eine mit dem Inkremental-Kodierer (G), dem Detektor (S), den Kopplungsvorrichtungen (CL) und einer Schnittstelle (HMI) für die Einführung von Betriebsparametern des auszuführenden Auftrags verbundene programmierbare Steuerung (MCS).
  6. Vorrichtung nach Anspruch 5, bei welcher die programmierbare Steuerung (MCS) mit einem Frequenzmodulator (D) für den Motor (M) und mit einem Kodierer (GM) für die Steuerung der Geschwindigkeit und der Position des Motors (M) verbunden ist.
EP04405282A 2004-05-05 2004-05-05 Methode und Vorrichtung zur anfänglichen Regelung der Registerhaltigkeit von Tiefdruckzylindern in einer Mehrfarben-Rotationsdruckmaschine Expired - Lifetime EP1593502B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04405282A EP1593502B1 (de) 2004-05-05 2004-05-05 Methode und Vorrichtung zur anfänglichen Regelung der Registerhaltigkeit von Tiefdruckzylindern in einer Mehrfarben-Rotationsdruckmaschine
AT04405282T ATE353282T1 (de) 2004-05-05 2004-05-05 Methode und vorrichtung zur anfänglichen regelung der registerhaltigkeit von tiefdruckzylindern in einer mehrfarben-rotationsdruckmaschine
DE602004004633T DE602004004633T2 (de) 2004-05-05 2004-05-05 Methode und Vorrichtung zur anfänglichen Regelung der Registerhaltigkeit von Tiefdruckzylindern in einer Mehrfarben-Rotationsdruckmaschine

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EP04405282A EP1593502B1 (de) 2004-05-05 2004-05-05 Methode und Vorrichtung zur anfänglichen Regelung der Registerhaltigkeit von Tiefdruckzylindern in einer Mehrfarben-Rotationsdruckmaschine

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EP1593502A1 EP1593502A1 (de) 2005-11-09
EP1593502B1 true EP1593502B1 (de) 2007-02-07

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EP04405282A Expired - Lifetime EP1593502B1 (de) 2004-05-05 2004-05-05 Methode und Vorrichtung zur anfänglichen Regelung der Registerhaltigkeit von Tiefdruckzylindern in einer Mehrfarben-Rotationsdruckmaschine

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Cited By (5)

* Cited by examiner, † Cited by third party
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US10642551B2 (en) 2017-07-14 2020-05-05 Georgia-Pacific Corrugated Llc Engine for generating control plans for digital pre-print paper, sheet, and box manufacturing systems
US11449290B2 (en) 2017-07-14 2022-09-20 Georgia-Pacific Corrugated Llc Control plan for paper, sheet, and box manufacturing systems
US11485101B2 (en) 2017-07-14 2022-11-01 Georgia-Pacific Corrugated Llc Controls for paper, sheet, and box manufacturing systems
US11520544B2 (en) 2017-07-14 2022-12-06 Georgia-Pacific Corrugated Llc Waste determination for generating control plans for digital pre-print paper, sheet, and box manufacturing systems
US11807480B2 (en) 2017-07-14 2023-11-07 Georgia-Pacific Corrugated Llc Reel editor for pre-print paper, sheet, and box manufacturing systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2392459B1 (de) 2010-06-02 2015-09-02 Müller Martini Holding AG Verfahren und Vorrichtung zur Registersteuerung einer Druckmaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1240495B (it) * 1990-07-20 1993-12-17 Officine Meccaniche G. Cerutti S.P.A. Meteodo per la registrazione, fra loro, di immagini monocromatiche durante la stampa di immagini policrome in una macchina da stampa rotativa.
US5771811A (en) * 1996-10-10 1998-06-30 Hurletron, Incorporated Pre-registration system for a printing press

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10642551B2 (en) 2017-07-14 2020-05-05 Georgia-Pacific Corrugated Llc Engine for generating control plans for digital pre-print paper, sheet, and box manufacturing systems
US11093186B2 (en) 2017-07-14 2021-08-17 Georgia-Pacific Corrugated Llc Engine for generating control plans for digital pre-print paper, sheet, and box manufacturing systems
US11449290B2 (en) 2017-07-14 2022-09-20 Georgia-Pacific Corrugated Llc Control plan for paper, sheet, and box manufacturing systems
US11485101B2 (en) 2017-07-14 2022-11-01 Georgia-Pacific Corrugated Llc Controls for paper, sheet, and box manufacturing systems
US11520544B2 (en) 2017-07-14 2022-12-06 Georgia-Pacific Corrugated Llc Waste determination for generating control plans for digital pre-print paper, sheet, and box manufacturing systems
US11807480B2 (en) 2017-07-14 2023-11-07 Georgia-Pacific Corrugated Llc Reel editor for pre-print paper, sheet, and box manufacturing systems
US11907595B2 (en) 2017-07-14 2024-02-20 Georgia-Pacific Corrugated Llc Control plan for paper, sheet, and box manufacturing systems
US11911992B2 (en) 2017-07-14 2024-02-27 Georgia-Pacific Corrugated Llc Controls for paper, sheet, and box manufacturing systems

Also Published As

Publication number Publication date
DE602004004633T2 (de) 2007-11-08
EP1593502A1 (de) 2005-11-09
DE602004004633D1 (de) 2007-03-22
ATE353282T1 (de) 2007-02-15

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