EP0709184A1 - Procédé pour signaler des différences de repère - Google Patents

Procédé pour signaler des différences de repère Download PDF

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Publication number
EP0709184A1
EP0709184A1 EP95113362A EP95113362A EP0709184A1 EP 0709184 A1 EP0709184 A1 EP 0709184A1 EP 95113362 A EP95113362 A EP 95113362A EP 95113362 A EP95113362 A EP 95113362A EP 0709184 A1 EP0709184 A1 EP 0709184A1
Authority
EP
European Patent Office
Prior art keywords
printing
register
corrections
speed
differences
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
EP95113362A
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German (de)
English (en)
Other versions
EP0709184B1 (fr
Inventor
Dieter Höhn
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
MAN Roland Druckmaschinen AG
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Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0709184A1 publication Critical patent/EP0709184A1/fr
Application granted granted Critical
Publication of EP0709184B1 publication Critical patent/EP0709184B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/004—Electric or hydraulic features of drives
    • B41F13/0045—Electric driving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering 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
    • B41P2213/90—Register control
    • B41P2213/91—Register control for sheet printing presses

Definitions

  • the invention relates to a method for avoiding register differences according to the preamble of claim 1 and a control executing the method.
  • Modern sheetfed offset presses are usually driven by speed-controlled DC drives, which allows them to be operated over a wide speed range. Printing speeds of 15,000 sheets / h and more are also achieved on today's sheet-fed offset printing press.
  • the partial images printed in different colors in the individual printing units must come to rest in the correct position on the printing material.
  • the plate cylinders in particular can be designed to be remotely adjustable relative to the rubber blanket cylinders interacting with them.
  • register differences are compensated for by determining the register differences of the individual partial colors to one another, in particular in the case of passports, registration marks, registration crosses or the like, and then using them to calculate control commands for the necessary register corrections and then to set them.
  • the individual plate cylinders in the printing units are corrected in their position in such a way that the individual partial colors are again aligned in the correct position.
  • this has the disadvantage that costly waste is produced in such a procedure.
  • a position controller for the drive shafts of a printing press is known from EP 0 446 641 A2, by means of which incorrect register maintenance during the acceleration of the printing press is to be avoided.
  • position signals are formed on the different shafts of the printing press and these are regulated to an always constant phase position using an evaluation and control circuit.
  • This previously known solution is probably applicable to web-fed rotary printing presses with several drive motors, but has the corresponding disadvantages with a corresponding transfer to a sheet-fed offset printing press with several printing units.
  • signal transmitters with the highest resolution would have to be attached to the individual printing units or the plate cylinder axes in order to still be able to detect position differences which are in the order of magnitude of 1/100 mm and below.
  • Such signal generators are, however Can be used with a sheetfed offset press at all, very cost-intensive.
  • DD-PS 115 069 also proposes a similar solution for register control on printing presses with multiple printing units during acceleration or deceleration.
  • a multi-color sheetfed offset printing press is known from EP 0 571 159 A1, in which remotely adjustable register correction devices are assigned to the plate cylinders in the individual printing units. In order to determine the necessary setting commands for the register adjustment devices, registration marks that are also printed are scanned, which entails the disadvantage with regard to waste that has already been made above.
  • the object of the present invention is therefore to expand a method for avoiding register differences and a control effecting this in accordance with the preamble of the method or device claim, so that the disadvantages listed above can be avoided.
  • a characteristic curve can be determined for each printing unit, which indicates how large the correction of the circumferential register to be carried out in particular must be in order to correct the register difference in the circumferential direction caused by the printing unit under consideration.
  • control according to the invention ensures that, depending on the printing speed detected by the control or a size corresponding to this, circumferential register corrections are carried out in the individual printing units in accordance with the associated characteristic curves.
  • control according to the invention is operatively connected to a known register remote adjustment device which carries out the circumferential register corrections on the individual plate cylinders in the printing units.
  • the correction according to the invention which is dependent on the printing speed, in particular of circumferential register errors, avoids that when the printing speed changes, register differences in the circumferential direction can sometimes occur to a considerable extent.
  • this measure according to the invention also avoids register differences during the acceleration or deceleration phase itself, since the circumferential register correction via the remote register adjustment in accordance with the current value of the printing speed, that is to say the speed of the printing press.
  • the value of the current supplied to the speed-controlled direct current drive of the printing press is recorded and circumferential register corrections are carried out in the individual printing units in accordance with previously determined characteristic curves.
  • the register is corrected as a function of the load torque, which the printing press opposes the main drive.
  • pressure tests are used to determine which register differences are caused in the various printing units when the motor current supplied to the DC drive assumes different values. From these register differences, characteristic curves are then determined for the individual printing units, which indicate which circumferential register correction in the respective printing unit is necessary for a certain value of the motor current in order to avoid a register difference in the circumferential direction.
  • the conversion of register differences in the circumferential direction corresponding control commands for a register adjustment device in the circumferential direction is known per se, so that a deeper consideration of this can be omitted.
  • it can be provided to calculate register correction values for the printing units following the first printing unit from the register differences.
  • the color printed in the first printing unit thus becomes the base color and the registers in the following printing units are corrected in relation to this base color.
  • the invention is therefore preferably designed if circumferential register corrections are carried out in the individual printing units not only as a function of the printing speed but also as a function of the motor current. In turn, the necessary tests for a large number of values of the printing speed and also different motor currents are required Correction of circumferential registers for the individual plate cylinders is determined, so that register differences in the circumferential direction are avoided.
  • it can be provided here to mount braking devices on the individual printing units, in which the braking torque can be set.
  • the characteristic curve fields to be determined in the printing tests described above, which indicate which circumferential register correction in the respective printing unit is to be carried out as a function of the printing speed and the motor current, are stored in the control according to the invention, with a signal being fed to this, which changes as a function of the printing speed and a further signal is also supplied, which reproduces the value of the current motor current.
  • the signal from a tachometer generator can be used for the current value of the printing speed.
  • a network-controlled converter for a DC drive also provides the current speed value in digital form.
  • the armature current can be measured directly, for example, or a value provided on the converter can be used to record the current value of the DC drive.
  • the method according to the invention and a correspondingly designed control system avoid, in particular, register differences in Circumferential direction when the value of the printing speed changes and also also in particular by changing the machine temperature in that empirically determined corrections to the circumferential register are set in the individual printing units. It takes advantage of the fact that the drive train of a sheetfed offset printing machine with several printing units has a certain torsional stiffness, that is, a predictable torsion occurs at different load moments between the individual printing units.
  • the register differences that occur when the printing speed changes are due to the fact that the load torque caused in a printing unit is a function of the speed, that is to say the printing speed. When the printing speed changes, not only the power to be fed into the drive train becomes larger, but also the load moments in the individual printing units. This results from predictable register errors, register differences which can be compensated for by the procedure according to the invention and a correspondingly designed control system by means of circumferential register corrections.
  • the register correction as a function of the detected motor current value of the direct current drive also takes advantage of the fact that on the one hand the motor current (armature current) of a direct current drive is proportional to the torque applied by the motor when it is running at a predetermined speed.
  • the torque of the drive is equal to the load torque of the printing press, which is the sum of the individual load moments of the printing units. A heating of the machine that occurs during printing operation thus leads to changing load moments in the individual printing units, so that the current value of the direct current drive changes at a predetermined speed.
  • the current value can therefore also be used to predict how large the register differences caused by torsion in the individual printing units will be, and consequently also how large the corresponding register corrections must be to compensate for them.
  • Fig. 1 shows the first four printing units of a sheetfed offset printing press.
  • the plate cylinders P1 to P4 are connected to register adjustment devices R1 to R4, which allow a correction of the register position of the plate cylinders P1 to P4 at least in the circumferential direction.
  • the register adjustment devices R1 to R4 are in operative connection with a known remote register adjustment RS, which controls the positioning drives of the register adjustment devices R1 to R4 according to predetermined data. Register corrections can also be made manually at the remote register adjustment RS via an input station.
  • the individual printing units are connected to one another by a drive train designed as a gear train R, which is formed by the double-sized spur gears of the impression cylinders G and the corresponding transfer drums T.
  • the gear train R and thus the individual printing units are driven by a direct current motor M, which feeds its power into the drive wheel of a transfer drum in the machine concept shown here as an example.
  • the DC drive M is controlled by a main drive HA designed as a converter, which is still operatively connected to a tachogenerator T which is coupled to the DC motor M. In conjunction with the tachogenerator T, the speed control of the DC motor M takes place.
  • the control S detects, for example via the main drive HA, a signal that the speed n of the direct current motor M or the printing speed of the printing press corresponds, and a signal that corresponds to the motor current (armature current) IA of the direct current motor M.
  • characteristic curves are stored for the individual printing units, according to which, depending on the motor current IA and the speed (printing speed), n adjustment values for the circumferential register of the plate cylinders P1 to P4 in the various printing units can be determined.
  • the circumferential register corrections determined by the control S are brought to the setting by the remote register adjustments RS on the plate cylinder P1 to P4.
  • the respective correction values for the circumferential register are set simultaneously with the current value of the motor current (armature current) IA and the speed n (printing speed). Provision can also be made for the color printed in the first printing unit to be defined as the base color and for circumferential register corrections in the following printing units.
  • FIG. 2 shows, in principle, a characteristic curve for a printing unit, according to which the necessary circumferential register corrections ⁇ U, for example empirically determined, are to be carried out as a function of the speed n (printing speed) and the motor current IA.
  • a characteristic field in the form of a plane running obliquely in the direction of the origin of the coordinate system is reproduced here.
  • This characteristic curve or field of characteristic curves reflects the basic tendency that the circumferential register correction ⁇ U for a printing unit increases with increasing speed n, even with a predetermined speed value, with increasing value of the motor current IA.
  • the characteristic field which is to be understood here in principle, shows purely linear dependencies of the necessary circumferential register corrections ⁇ U as a function of the rotational speed n or the motor current IA in that there is a certain minimum current IA for each speed n (printing speed). Circumferential register corrections with the opposite sign and negative current (electrical braking) are not shown.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Shift Register Type Memory (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
EP95113362A 1994-09-29 1995-08-25 Dispositif pour éviter des défauts de repérage Expired - Lifetime EP0709184B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4434843A DE4434843A1 (de) 1994-09-29 1994-09-29 Verfahren zur Vermeidung von Passerdifferenzen
DE4434843 1994-09-29

Publications (2)

Publication Number Publication Date
EP0709184A1 true EP0709184A1 (fr) 1996-05-01
EP0709184B1 EP0709184B1 (fr) 1999-10-06

Family

ID=6529531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95113362A Expired - Lifetime EP0709184B1 (fr) 1994-09-29 1995-08-25 Dispositif pour éviter des défauts de repérage

Country Status (3)

Country Link
EP (1) EP0709184B1 (fr)
AT (1) ATE185317T1 (fr)
DE (3) DE4434843A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998016384A1 (fr) * 1996-10-12 1998-04-23 Goss Graphic Systems Limited Appareil d'impression
EP0934826A1 (fr) * 1998-01-20 1999-08-11 BAUMÜLLER ANLAGEN-SYSTEMTECHNIK GmbH & Co. Méthode de mise en oeuvre d'une machine d'impression avec une pluralité des fonctions ainsi que dispositif de technique de commande
WO2006007951A3 (fr) * 2004-07-15 2006-04-13 Windmoeller & Hoelscher Precommande d'un registre pendant des changements de vitesse
EP1745925A3 (fr) * 2005-07-19 2007-04-18 Bosch Rexroth AG Dispositif de contrôle de registre
EP1916106A3 (fr) * 2006-10-25 2009-10-28 Heidelberger Druckmaschinen Aktiengesellschaft Procédé de compensation d'erreur d'enregistrement circonférentiel fondé sur les oscillations dans une presse au sol
WO2010057636A1 (fr) * 2008-11-21 2010-05-27 Robert Bosch Gmbh Procédé de correction axiale pour une machine de traitement et machine de traitement
US9079388B2 (en) * 2006-02-16 2015-07-14 Heidelberger Druckmaschinen Ag Control of a printing press using a torsion model and printing press controlled by torsion model
DE10334230B4 (de) * 2002-08-06 2018-05-03 Heidelberger Druckmaschinen Ag Vorrichtung zur Korrektur der Lage eines Druckbildes auf einem Bogen einer Bogen-Druckmaschine

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10132266B4 (de) 2000-07-11 2015-10-22 Heidelberger Druckmaschinen Ag Verfahren zur Regelung des Übergabepassers in einer Bogenrotationsdruckmaschine
DE102004031508B4 (de) * 2004-06-30 2016-01-07 Koenig & Bauer Ag Verfahren zur Korrektur von Passerdifferenzen
DE102004048151B4 (de) * 2004-10-02 2018-06-21 Koenig & Bauer Ag Verfahren zur Optimierung von Antriebsreglern
US7478593B2 (en) 2004-12-23 2009-01-20 Koenig & Bauer Ag Method for making compensations for register deviations
DE102006007181A1 (de) * 2006-02-16 2007-08-23 Heidelberger Druckmaschinen Ag Steuerung einer Druckmaschine mittels Torsionsmodell
DE102009026494A1 (de) 2008-11-27 2010-06-10 Koenig & Bauer Aktiengesellschaft Verfahren zur Korrektur von Übergabepasserdifferenzen
DE102018201968A1 (de) * 2017-03-08 2018-09-13 Heidelberger Druckmaschinen Ag Verfahren zur Reduktion von quasi-statischen Passerdifferenzen in einer Druckmaschine

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD115069A1 (fr) 1974-10-15 1975-09-12
DE3136703C1 (de) * 1981-09-16 1982-11-04 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Einrichtungen an Druckmaschinen mit Registerverstelleinrichtungen
DE3225165A1 (de) * 1981-10-16 1983-04-28 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Verfahren und einrichtung zur fernbedienung von stellgliedern
EP0081186A1 (fr) * 1981-12-08 1983-06-15 Heidelberger Druckmaschinen Aktiengesellschaft Procédé et dispositif pour diminuer les fautes de repérage dans des machines à imprimer rotatives à plusieurs couleurs
JPS61258754A (ja) * 1985-05-14 1986-11-17 Toppan Printing Co Ltd グラビア輪転機における見当補正ロ−ラ位置設定装置
EP0446641A2 (fr) 1990-03-13 1991-09-18 Heidelberger Druckmaschinen Aktiengesellschaft Régulateur de position des arbres de commande d'une imprimante
DE4031964A1 (de) * 1990-10-09 1992-04-23 Lehmacher & Sohn Masch Rotationsdruckgeraet
EP0567741A1 (fr) * 1992-04-30 1993-11-03 Asea Brown Boveri Ag Machine à imprimer rotative
DE4215228A1 (de) * 1992-05-09 1993-11-11 Kba Planeta Ag Antriebssystem für Druckmaschinen
EP0571159A1 (fr) 1992-05-16 1993-11-24 O'Keefe, Desmond Dispositif de repérage d'une plaque d'impression
WO1994029108A1 (fr) * 1993-06-01 1994-12-22 Comco Machinery, Inc. Presse d'impression automatique avec commande de concordance a reinsertion

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD115069A1 (fr) 1974-10-15 1975-09-12
DE3136703C1 (de) * 1981-09-16 1982-11-04 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Einrichtungen an Druckmaschinen mit Registerverstelleinrichtungen
DE3225165A1 (de) * 1981-10-16 1983-04-28 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Verfahren und einrichtung zur fernbedienung von stellgliedern
EP0081186A1 (fr) * 1981-12-08 1983-06-15 Heidelberger Druckmaschinen Aktiengesellschaft Procédé et dispositif pour diminuer les fautes de repérage dans des machines à imprimer rotatives à plusieurs couleurs
JPS61258754A (ja) * 1985-05-14 1986-11-17 Toppan Printing Co Ltd グラビア輪転機における見当補正ロ−ラ位置設定装置
EP0446641A2 (fr) 1990-03-13 1991-09-18 Heidelberger Druckmaschinen Aktiengesellschaft Régulateur de position des arbres de commande d'une imprimante
DE4031964A1 (de) * 1990-10-09 1992-04-23 Lehmacher & Sohn Masch Rotationsdruckgeraet
EP0567741A1 (fr) * 1992-04-30 1993-11-03 Asea Brown Boveri Ag Machine à imprimer rotative
DE4215228A1 (de) * 1992-05-09 1993-11-11 Kba Planeta Ag Antriebssystem für Druckmaschinen
EP0571159A1 (fr) 1992-05-16 1993-11-24 O'Keefe, Desmond Dispositif de repérage d'une plaque d'impression
WO1994029108A1 (fr) * 1993-06-01 1994-12-22 Comco Machinery, Inc. Presse d'impression automatique avec commande de concordance a reinsertion

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HANS-WERNER LOY: "Digitale Antriebstechnik revolutioniert auch den Druckmaschinenbau", DEUTSCHER DRUCKER, vol. 31, no. 11, - 23 March 1995 (1995-03-23), OSTFILDERN(RUIT), DE, pages w2 - w6, XP000494347 *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 114 (M - 579) 10 April 1987 (1987-04-10) *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321638A (en) * 1996-10-12 1998-08-05 Goss Graphic Systems Limited Printing apparatus
GB2321638B (en) * 1996-10-12 2001-01-31 Goss Graphic Systems Ltd Printing apparatus
US6446553B1 (en) 1996-10-12 2002-09-10 John Ian Costin Printing apparatus
WO1998016384A1 (fr) * 1996-10-12 1998-04-23 Goss Graphic Systems Limited Appareil d'impression
EP0934826A1 (fr) * 1998-01-20 1999-08-11 BAUMÜLLER ANLAGEN-SYSTEMTECHNIK GmbH & Co. Méthode de mise en oeuvre d'une machine d'impression avec une pluralité des fonctions ainsi que dispositif de technique de commande
DE10334230B4 (de) * 2002-08-06 2018-05-03 Heidelberger Druckmaschinen Ag Vorrichtung zur Korrektur der Lage eines Druckbildes auf einem Bogen einer Bogen-Druckmaschine
EP1773592B1 (fr) 2004-07-15 2015-05-27 Windmöller & Hölscher KG Precommande d'un registre pendant des changements de vitesse
WO2006007951A3 (fr) * 2004-07-15 2006-04-13 Windmoeller & Hoelscher Precommande d'un registre pendant des changements de vitesse
EP1745925A3 (fr) * 2005-07-19 2007-04-18 Bosch Rexroth AG Dispositif de contrôle de registre
US9079388B2 (en) * 2006-02-16 2015-07-14 Heidelberger Druckmaschinen Ag Control of a printing press using a torsion model and printing press controlled by torsion model
US8763529B2 (en) 2006-10-25 2014-07-01 Heidelberger Druckmaschinen Ag Method of compensating for vibration-induced circumferential register errors in a sheet-fed printing press and sheet-fed printing press carrying out the method
EP1916106A3 (fr) * 2006-10-25 2009-10-28 Heidelberger Druckmaschinen Aktiengesellschaft Procédé de compensation d'erreur d'enregistrement circonférentiel fondé sur les oscillations dans une presse au sol
DE102008058458A1 (de) 2008-11-21 2010-05-27 Robert Bosch Gmbh Verfahren zur Achskorrektur bei einer Verarbeitungsmaschine sowie Verarbeitungsmaschine
US8768491B2 (en) 2008-11-21 2014-07-01 Robert Bosch Gmbh Method for axis correction in a processing machine and processing machine
WO2010057636A1 (fr) * 2008-11-21 2010-05-27 Robert Bosch Gmbh Procédé de correction axiale pour une machine de traitement et machine de traitement

Also Published As

Publication number Publication date
DE59506983D1 (de) 1999-11-11
DE9421695U1 (de) 1996-05-15
EP0709184B1 (fr) 1999-10-06
DE4434843A1 (de) 1996-04-18
ATE185317T1 (de) 1999-10-15

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