EP0081739A1 - Dispositif de commande de plusieurs moteurs de réglage dans les machines d'impression - Google Patents
Dispositif de commande de plusieurs moteurs de réglage dans les machines d'impression Download PDFInfo
- Publication number
- EP0081739A1 EP0081739A1 EP82111067A EP82111067A EP0081739A1 EP 0081739 A1 EP0081739 A1 EP 0081739A1 EP 82111067 A EP82111067 A EP 82111067A EP 82111067 A EP82111067 A EP 82111067A EP 0081739 A1 EP0081739 A1 EP 0081739A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- servomotors
- power supply
- control device
- printing
- supply unit
- 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
Links
Images
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 on and off of the servomotors and a power supply unit feeding the running servomotors.
- 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 high 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 power requirement must be taken into account such a power supply is relatively large. If a printing press comprises several printing units, as is required for multi-color printing, 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 in such a way that the effort 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 unit and the control of the servomotors, a current measurement of the actuation currents which can be controlled by a microprocessor and limits the number of actuators which are actuated is provided.
- the invention takes advantage of the fact that, in the rarest of cases, there is a need for all the servomotors to be switched on at the same time, and also that the various servomotors have different running times, depending on how far the actuator is from the target 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 position.
- a controller that only keeps the number of connected motors constant does not take into account the different current requirements of the different motors mentioned above, so that the power supply unit cannot always 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 such is designed so 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.
- the control device can allow the switching on 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 power consumption that is immediately below the specified limit value.
- the instantaneous current increase 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 can be connected to the power supply regardless of their affiliation to a specific printing unit, so that if corrections are required during printing, an adjustment can readily be made to all printing units simultaneously, 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 la, lb, ..., ln in a printing press, which make it possible to set the color profiles of the individual printing units belonging to the printing press ren.
- Each actuator is assigned to a zone of the color thickness profile.
- the actuators Ia, lb, ..., In are each driven by actuators 2a, 2b, ..., 2n, which in turn can be connected to a common power supply unit 4 via a controllable switch 3a, 3b, ... 3n, which in the illustrated embodiment comprises two independent units 4a, 4b, namely one for the forward run and one for the reverse run of the servomotors 2a, 2b, ...
- 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 la, lb,... 8 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 la, Ib,... Ln by a suitable target value input unit 6, for example an input desk to be operated by a printer, which also comprises 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 matches the nominal position.
- switches 3a, 3b, ... 3n make it possible to selectively switch on the forward or reverse movement of the associated motor, depending on whether the actual position is the, by selectively connecting to the unit 4a or 4b of the power supply Target position falls below or exceeds.
- the microprocessor does not connect all the servomotors 2a, 2b,... 2n to the power supply unit 4, the actuators of which deviate from the target position, but only so much that the maximum performance of the power supply unit 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 value is chosen so that it is below the performance of the power supply unit 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 is guaranteed that this performance is always fully utilized, regardless of the current current 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 servomotors 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 unit with a specific color can take precedence over other actuators, for example the actuators assigned to the blue color.
- 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 Electric Motors In General (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3148947 | 1981-12-10 | ||
DE19813148947 DE3148947A1 (de) | 1981-12-10 | 1981-12-10 | Vorrichtung zur steuerung einer vielzahl von stellmotoren an druckmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0081739A1 true EP0081739A1 (fr) | 1983-06-22 |
EP0081739B1 EP0081739B1 (fr) | 1985-04-24 |
Family
ID=6148394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82111067A Expired EP0081739B1 (fr) | 1981-12-10 | 1982-11-30 | Dispositif de commande de plusieurs moteurs de réglage dans les machines d'impression |
Country Status (11)
Country | Link |
---|---|
US (1) | US4464615A (fr) |
EP (1) | EP0081739B1 (fr) |
JP (1) | JPS58112744A (fr) |
AT (1) | AT385952B (fr) |
CA (1) | CA1192783A (fr) |
DE (2) | DE3148947A1 (fr) |
DK (1) | DK153257C (fr) |
ES (1) | ES518043A0 (fr) |
MX (1) | MX152012A (fr) |
NO (1) | NO159068C (fr) |
ZA (1) | ZA828021B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0978380A2 (fr) * | 1998-08-05 | 2000-02-09 | MAN Roland Druckmaschinen AG | Organe de calcul pour une machine à imprimer |
Families Citing this family (17)
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 |
US5165336A (en) * | 1986-01-10 | 1992-11-24 | Alliance Rubber Company, Inc. | Method and apparatus for making printed elastic bands |
US5113757A (en) * | 1986-01-10 | 1992-05-19 | 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 (fr) * | 1996-04-22 | 1997-10-30 | Weld Tooling Corporation | Systeme modulaire unifie d'actionnement et de commande pour des applications robotiques mobiles |
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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3792659A (en) * | 1971-08-16 | 1974-02-19 | Hantscho G Co Inc | Multiple point ink control apparatus for printing presses |
US3930447A (en) * | 1974-07-22 | 1976-01-06 | Harris Corporation | Dual purpose display for printing presses |
Family Cites Families (8)
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 |
US3757179A (en) * | 1972-10-24 | 1973-09-04 | Gen Electric | Voltage control of an ac drive system during motor starting |
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 |
-
1981
- 1981-12-10 DE DE19813148947 patent/DE3148947A1/de not_active Ceased
-
1982
- 1982-11-02 ZA ZA828021A patent/ZA828021B/xx unknown
- 1982-11-23 DK DK522182A patent/DK153257C/da not_active IP Right Cessation
- 1982-11-30 DE DE8282111067T patent/DE3263306D1/de not_active Expired
- 1982-11-30 EP EP82111067A patent/EP0081739B1/fr not_active Expired
- 1982-12-08 CA CA000417285A patent/CA1192783A/fr not_active Expired
- 1982-12-09 US US06/448,225 patent/US4464615A/en not_active Expired - Lifetime
- 1982-12-09 ES ES518043A patent/ES518043A0/es active Granted
- 1982-12-09 NO NO824153A patent/NO159068C/no unknown
- 1982-12-10 JP JP57215616A patent/JPS58112744A/ja active Granted
- 1982-12-10 AT AT0450482A patent/AT385952B/de not_active IP Right Cessation
- 1982-12-10 MX MX195549A patent/MX152012A/es unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3792659A (en) * | 1971-08-16 | 1974-02-19 | Hantscho G Co Inc | Multiple point ink control apparatus for printing presses |
US3930447A (en) * | 1974-07-22 | 1976-01-06 | Harris Corporation | Dual purpose display for printing presses |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0978380A2 (fr) * | 1998-08-05 | 2000-02-09 | MAN Roland Druckmaschinen AG | Organe de calcul pour une machine à imprimer |
EP0978380A3 (fr) * | 1998-08-05 | 2000-05-31 | MAN Roland Druckmaschinen AG | Organe de calcul pour une machine à imprimer |
Also Published As
Publication number | Publication date |
---|---|
CA1192783A (fr) | 1985-09-03 |
NO159068B (no) | 1988-08-22 |
ES8308263A1 (es) | 1983-09-01 |
DK153257C (da) | 1989-04-24 |
US4464615A (en) | 1984-08-07 |
DE3263306D1 (en) | 1985-05-30 |
ES518043A0 (es) | 1983-09-01 |
DE3148947A1 (de) | 1983-06-23 |
JPH0357864B2 (fr) | 1991-09-03 |
DK153257B (da) | 1988-06-27 |
EP0081739B1 (fr) | 1985-04-24 |
MX152012A (es) | 1985-05-23 |
JPS58112744A (ja) | 1983-07-05 |
DK522182A (da) | 1983-06-11 |
ZA828021B (en) | 1983-09-28 |
NO159068C (no) | 1988-11-30 |
NO824153L (no) | 1983-06-13 |
AT385952B (de) | 1988-06-10 |
ATA450482A (de) | 1987-11-15 |
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