EP0081739B1 - Vorrichtung zur Steuerung einer Vielzahl von Stellmotoren an Druckmaschinen - Google Patents

Vorrichtung zur Steuerung einer Vielzahl von Stellmotoren an Druckmaschinen Download PDF

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Publication number
EP0081739B1
EP0081739B1 EP82111067A EP82111067A EP0081739B1 EP 0081739 B1 EP0081739 B1 EP 0081739B1 EP 82111067 A EP82111067 A EP 82111067A EP 82111067 A EP82111067 A EP 82111067A EP 0081739 B1 EP0081739 B1 EP 0081739B1
Authority
EP
European Patent Office
Prior art keywords
servomotors
control device
motors
supply unit
printing
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
Application number
EP82111067A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0081739A1 (de
Inventor
Anton Rodi
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0081739A1 publication Critical patent/EP0081739A1/de
Application granted granted Critical
Publication of EP0081739B1 publication Critical patent/EP0081739B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B41F31/045—Remote control of the duct keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0009—Central control units
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/45—Sensor for ink or dampening fluid thickness or density

Definitions

  • the invention relates to a device for controlling a plurality of servomotors on printing presses, in particular for setting the color or wet thickness profile on offset printing presses, which has a plurality of printing units and a multiplicity of servomotors assigned to individual zones of each printing unit, with a control device coupled to the servomotors Switching the servomotors on and off and a power supply unit feeding the running servomotors (US-A-3 792 659).
  • the color ruler is replaced by a number of actuators arranged side by side, which determine the ink thickness in a certain zone.
  • actuators By adjusting these actuators differently, an optimal ink thickness profile for the respective print pattern can be set as with an ink knife.
  • the actuators are adjusted in such a way that these actuators are provided with a device for reporting their actual position to the control device, which in turn connects the servomotor to the power supply unit and thereby causes it to run until the reported actual position with the Target position agrees.
  • the servomotors When setting up the printing press, it is usually necessary to switch on a large number of the existing servomotors at the same time. Since the adjustment should take place in a relatively short time, the servomotors have a correspondingly large output and accordingly also a high current consumption. This current consumption is also not constant, but depends, for example, on the color consistency. The current requirement when the servomotor starts is greater than when it has run in. Furthermore, differences from servomotor to servomotor can result from differences in the ease of movement of the necessary gears, which can be attributed, for example, to manufacturing tolerances.
  • the power supply is designed so that it can drive all the servomotors provided on a printing unit at the same time. Since the worst-case current requirement has to be taken into account, such a power supply unit is dimensioned relatively generously. If a printing press comprises several print values, as is required for multicolor prints, a corresponding number of power supply units is also required. The effort involved is relatively large.
  • the invention is therefore based on the object of designing a device of the type mentioned at the outset such that the expenditure required for the power supply units can be significantly reduced if short response times are observed.
  • This object is achieved according to the invention in that between the power supply and the control of the servomotors a current measurement value detection of the actuation currents, which can be controlled by a control device, in particular by a microprocessor, is provided and limits the number of actuated motors.
  • the invention takes advantage of the fact that in the rarest of cases there is a need for all servomotors to be switched on at the same time, and also that the various servomotors have a different running time, depending on how far the actuator moves from the setpoint when it is switched on. Position is removed.
  • the control device ensures that the power supply unit always operates at full power by immediately switching on a new motor as soon as a previously connected motor is switched off because the assigned actuator has reached the desired target position. Unnecessary waiting times are therefore avoided, and all actuators of the printing press are brought into the desired position in the shortest possible time. It is entirely possible that motors are running at the same time that are assigned to different printing units.
  • control device can keep the number of motors switched on as long as motors are still waiting to be switched on because the assigned actuators are not in the desired target position.
  • a controller that only keeps the number of connected motors constant does not take into account the above-mentioned different current requirements of the different motors, so that the power supply unit cannot be optimally used in view of the worst case.
  • Optimal utilization of the power supply unit in all respects can be achieved in a further embodiment of the invention in that the power supply unit is designed such that it is connected to the servomotors via the control device as a function of the strength of the current supplied to all connected servomotors.
  • control device can allow the connection of motors in a particularly simple manner until the total current consumption exceeds a limit value below the performance of the power supply unit.
  • This limit value must be set in such a way that the performance of the power supply unit is not exceeded even if a motor is switched on with a total current consumption that is immediately below the specified limit value.
  • the instantaneous current surge that occurs when the motor starts up can be disregarded without further ado, if only the continuous load remains within the performance of the power supply.
  • a particular advantage of the control device according to the invention is that the motors are independent of their affiliation to a specific printing unit to the power supply can be closed, so that if corrections are required during printing, an adjustment can be made simultaneously on all printing units if only a few servomotors are to be switched on per printing unit.
  • the invention is described and explained in more detail below with reference to the embodiment shown in the drawing. The details from the description and the drawing can be used in other embodiments of the invention individually or in combination in any combination.
  • the drawing shows the circuit diagram of a device according to the invention.
  • the device schematically illustrated in the drawing comprises n actuators 1a, 1b, ..., 1 of a printing press, which make it possible to set the color profiles of the individual printing units which belong to the printing press.
  • Each actuator is assigned to a zone of the color thickness profile.
  • the actuators 1a, 1b, ..., 1n are each driven by servomotors 2a, 2b, ..., 2n, which in turn are connected to a common power supply 4 via a controllable switch 3a, 3b, ... 3n can, which in the illustrated embodiment comprises two separate units 4a, 4b, namely one for the forward run and one for the reverse run of the servomotors 2a, 2b, ...
  • a power supply unit controlled according to the invention each of which can be regarded as a power supply unit controlled according to the invention.
  • the connection of the motors to the power supply unit 4 is controlled by a microprocessor 5 with the aid of a current measurement 9, to which signals from the actuators ia, 1b,... 1 n are fed via an actual value input unit 8 via the actual positions of the individual actuators .
  • the microprocessor is supplied with characteristic values for the target positions of the actuators 1a, 1b,... 1n by a suitable target value input unit 6, for example an input desk to be operated by a printer, which also includes a keyboard 10.
  • a difference between the actual position reported by an actuator to the nominal value input unit 6 shows the microprocessor 5 that the assigned servomotor must be switched on until the actual position corresponds to the nominal position. It goes without saying that the switches 3a, 3b,... 3n, by selectively connecting to the unit 4a or 4b of the power supply unit 4, make it possible to selectively switch on the forward or reverse of the associated motor, depending on whether the actual position falls below or exceeds the target position.
  • the microprocessor does not connect all the servomotors 2a, 2b,... 2n to the power supply 4, the actuators of which deviate from the target position, but only so much that the maximum performance of the power supply 4 is not exceeded.
  • a current transformer 7a or 7b is switched on in the lines leading from the units 4a and 4b of the power supply 4 to the switches 3a, 3b, ..., 3n, each of which feeds a signal to a current measurement value 9, which for the respective total current is characteristic.
  • the microprocessor 5 controls by means of a switch control 11 the switching on of the motors in the order specified in a priority memory 12 until the output signal of the current measurement value detection 9 indicates that a predetermined limit value has been exceeded.
  • this limit is chosen so that it is below the performance of the power supply 4a or 4b by the maximum current consumption of a motor, it is ensured that this performance is never exceeded. On the other hand, it ensures that this performance is always fully utilized, regardless of the current power requirement of each individual motor. It is particularly advantageous that actuators that are assigned to different printing units can be adjusted simultaneously.
  • the microprocessor could poll the actuators cyclically and to switch on the motors one after the other in the order given until there are no longer any differences between the desired position and the actual position. All stepper motors would be treated equally.
  • the use of the priority memory 12 makes it possible to bring the addresses of the actuators into such an order that the position of those actuators whose correction is most necessary is always corrected first.
  • the actuators assigned to a printing group with a specific color can take precedence over other actuators, for example the actuators assigned to the blue color.
  • priorities are set according to the size of the path to be changed, so that those motors are preferably switched on whose actuators deviate the most from the target position in order to correct severe incorrect settings before fine adjustments are made at other positions .
  • Rankings of this type can easily be implemented by means of the microprocessor 5 and the priority memory 12 according to known programs.
  • the invention is not limited to the embodiment illustrated by the drawing.
  • the current consumption of the individual motors could also be monitored and reported back to the microprocessor, which uses this to calculate the total current consumption.
  • the microprocessor no microprocessor needs to be used, but instead a hard-wired control device can be used.
  • the invention is not limited to the setting of the ink thickness profile in offset printing presses, but that color or wet thickness profiles can be set on printing machines of any type according to the invention.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Control Of Electric Motors In General (AREA)
EP82111067A 1981-12-10 1982-11-30 Vorrichtung zur Steuerung einer Vielzahl von Stellmotoren an Druckmaschinen Expired EP0081739B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813148947 DE3148947A1 (de) 1981-12-10 1981-12-10 Vorrichtung zur steuerung einer vielzahl von stellmotoren an druckmaschinen
DE3148947 1981-12-10

Publications (2)

Publication Number Publication Date
EP0081739A1 EP0081739A1 (de) 1983-06-22
EP0081739B1 true EP0081739B1 (de) 1985-04-24

Family

ID=6148394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111067A Expired EP0081739B1 (de) 1981-12-10 1982-11-30 Vorrichtung zur Steuerung einer Vielzahl von Stellmotoren an Druckmaschinen

Country Status (11)

Country Link
US (1) US4464615A (es)
EP (1) EP0081739B1 (es)
JP (1) JPS58112744A (es)
AT (1) AT385952B (es)
CA (1) CA1192783A (es)
DE (2) DE3148947A1 (es)
DK (1) DK153257C (es)
ES (1) ES518043A0 (es)
MX (1) MX152012A (es)
NO (1) NO159068C (es)
ZA (1) ZA828021B (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989592A (ja) * 1982-11-13 1984-05-23 Fanuc Ltd 複数モ−タの切替制御方式
US4648540A (en) * 1984-11-27 1987-03-10 Moore Business Forms Inc Size independent modular web processing line and modules
US4839814A (en) * 1985-01-29 1989-06-13 Moore Business Forms, Inc. Size independent modular web processing line and modules
JPS61196788A (ja) * 1985-02-22 1986-08-30 Fanuc Ltd 電動機の速度制御装置
US5113757A (en) * 1986-01-10 1992-05-19 Alliance Rubber Company, Inc. Method and apparatus for making printed elastic bands
US5165336A (en) * 1986-01-10 1992-11-24 Alliance Rubber Company, Inc. Method and apparatus for making printed elastic bands
JPS63141746A (ja) * 1986-12-05 1988-06-14 Komori Printing Mach Co Ltd インキ供給量制御方法
JPH01308185A (ja) * 1988-06-02 1989-12-12 Fanuc Ltd モータ制御装置
US4914474A (en) * 1988-06-10 1990-04-03 Eastman Kodak Company Speed control for film and document transport drives in a microfilm camera
JPH0229286A (ja) * 1988-07-19 1990-01-31 Mitsubishi Electric Corp ミシンの制御装置
DE3839248A1 (de) * 1988-11-21 1990-05-23 Roland Man Druckmasch Dezentraler steuerrechner, insbesondere innerhalb einer rotationsdruckmaschine, der ueber einen bus mit mehreren peripheren einheiten verbunden ist
US4931712A (en) * 1988-12-28 1990-06-05 Pitney Bowes Inc. Multiple channel servo configuration
WO1997040428A1 (en) * 1996-04-22 1997-10-30 Weld Tooling Corporation Unified modular system of drives and controls for mobile robotic applications
DE29813975U1 (de) * 1998-08-05 1998-10-08 MAN Roland Druckmaschinen AG, 63075 Offenbach Steuerrechner für eine Druckmaschine
DE10064755A1 (de) * 2000-12-22 2002-07-11 Roland Man Druckmasch Stromversorgung für eine Rotationsdruckmaschine
DE20214764U1 (de) * 2002-09-19 2002-11-21 Stoeber Antriebstech Gmbh & Co Schalteinrichtung zur Ansteuerung wenigstens zweier Motoren
DE102007055837B4 (de) * 2007-03-07 2011-04-28 Denso Corporation, Kariya-City Last-Ansteuerverfahren
DE102011008592B4 (de) * 2010-02-08 2022-08-18 Heidelberger Druckmaschinen Ag Farbsteuerung für Druckmaschinen mit Kurzfarbwerk

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT80138B (de) * 1913-01-12 1920-02-25 Siemens Schuckertwerke Gmbh Einrichtung zur Konstanthaltung oder Begrenzung deEinrichtung zur Konstanthaltung oder Begrenzung der Energieaufnahme mehrerer elektrischer Energieverr Energieaufnahme mehrerer elektrischer Energieverbraucher. braucher.
AT30558B (de) * 1906-04-19 1907-11-11 Siemens Schuckertwerke Wien Einrichtung zum Betrieb mehrerer Motoren aus einer gemeinschaftlichen Stromquelle.
GB990029A (en) * 1961-08-02 1965-04-22 Licentia Gmbh Improved system for controlling a group of dynamo electric machines
US3774536A (en) * 1971-08-09 1973-11-27 Rockwell International Corp Printing press control system
US3792659A (en) * 1971-08-16 1974-02-19 Hantscho G Co Inc Multiple point ink control apparatus for printing presses
US3757179A (en) * 1972-10-24 1973-09-04 Gen Electric Voltage control of an ac drive system during motor starting
US3930447A (en) * 1974-07-22 1976-01-06 Harris Corporation Dual purpose display for printing presses
US4193345A (en) * 1977-04-01 1980-03-18 Roland Offsetmaschinenfabrik Faber & Schleicher Ag Device for adjustment of the ink flow on printing press inking units
DE2950606A1 (de) * 1979-12-15 1981-06-19 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zur zonenweisen optoelektronischen messung der flaechendeckung einer druckvorlage
DE3112189A1 (de) * 1981-03-27 1982-10-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Druckmaschine mit stellmotoren

Also Published As

Publication number Publication date
NO159068B (no) 1988-08-22
ES8308263A1 (es) 1983-09-01
ES518043A0 (es) 1983-09-01
JPH0357864B2 (es) 1991-09-03
ATA450482A (de) 1987-11-15
ZA828021B (en) 1983-09-28
US4464615A (en) 1984-08-07
NO824153L (no) 1983-06-13
DK153257B (da) 1988-06-27
MX152012A (es) 1985-05-23
EP0081739A1 (de) 1983-06-22
NO159068C (no) 1988-11-30
DE3148947A1 (de) 1983-06-23
JPS58112744A (ja) 1983-07-05
CA1192783A (en) 1985-09-03
DE3263306D1 (en) 1985-05-30
DK153257C (da) 1989-04-24
AT385952B (de) 1988-06-10
DK522182A (da) 1983-06-11

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