EP0709184B1 - Vorrichtung zur Vermeidung von Passerdifferenzen - Google Patents
Vorrichtung zur Vermeidung von Passerdifferenzen Download PDFInfo
- Publication number
- EP0709184B1 EP0709184B1 EP95113362A EP95113362A EP0709184B1 EP 0709184 B1 EP0709184 B1 EP 0709184B1 EP 95113362 A EP95113362 A EP 95113362A EP 95113362 A EP95113362 A EP 95113362A EP 0709184 B1 EP0709184 B1 EP 0709184B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- register
- printing
- speed
- differences
- printing units
- 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
Links
Images
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 device for avoiding register differences according to the preamble of claim 1.
- Modern sheetfed offset presses are usually controlled by speed DC drives, what their operation in allowed a wide speed range. Also be on today Sheetfed offset printing machine Print speeds of 15,000 sheets / h and achieved more. Operating a sheetfed offset press in wide speed range on the one hand and the achievable high Print speeds, on the other hand, require high levels of construction Effort to avoid register differences. In the the individual printing units printed in different colors must lie on the substrate in the correct position. Around just those that occur when the printing speed changes It is therefore known to be able to control register differences in the individual printing units in particular remotely adjustable devices to be provided for register adjustment. For page, circumference and Slant register correction can be done in particular by the plate cylinder compared to the blanket cylinders that interact with them be remotely adjustable.
- Register differences When starting up a printing press, for example, from the basic speed in some cases, considerable press speeds occur Register differences. This not only applies to the acceleration phase, i.e. within the period in which the speed of the Printing machine is changed per unit of time, but also in ultimately reached steady state.
- the register differences that occur are due to the fact that in mechanical Drive train of the machine due to the speed-dependent load torque of the individual printing units a speed-dependent Torsion occurs.
- the rigidity of the mechanical Drive train i.e. the elasticity of the performance transferring links between the individual printing units, it comes thus to register differences.
- EP 0 446 641 A2 describes a position controller for the drive shafts a printing press known, by means of which a faulty Register accuracy during the acceleration of the printing press should be avoided.
- position signals at the different Shafts of the printing press formed and this with a Evaluation and control circuit on a constant phase position regulated.
- This previously known solution is probably for roll rotary printing machines with multiple drive motors can be used, but demonstrates appropriate transfer to a sheetfed offset press several printing units have significant disadvantages. So would have to the individual printing units or the plate cylinder axes, signal transmitter be attached with the highest resolution to position differences still being able to record which in the order of 1 / 100mm and lie below. Such signal generators are, however Can be used with a sheetfed offset press at all, very much expensive.
- a similar solution to register regulation Printing machines with multiple printing units during acceleration or delay also suggests DD-PS 115 069.
- a multi-color sheetfed offset printing press is known from EP 0 571 159 A1 known in the case of the plate cylinders in the individual printing units remotely adjustable register correction devices are assigned. To determine the necessary setting commands for the register adjustment devices but also printed registration marks are scanned, what the disadvantage already made above Waste results.
- EP-A-0 081 186 describes a method for reducing register errors and a corresponding printing press for performing the method is known at which the printing press is driven by a common motor and Has facilities for register adjustment. It becomes functional Relationship between the torque delivered by the engine or one for the Torque characteristic size and that to maintain a flawless Necessary register shift determined and saved. This will the printing press at different printing speeds and the Register shifts recorded with the respective torque. When operating the Printing machine is then the register according to the torque according to the stored values.
- a disadvantage of this known design is that you work directly with the torque or a variable dependent on it.
- the object of the present invention is therefore a device for avoidance of register differences according to the preamble of claim to expand in such a way that the disadvantages listed above can be avoided.
- the invention Control is available with a known register remote adjustment device in operative connection which corrects the circumferential register on the individual plate cylinders in the printing units for execution brings.
- this invention Measure also register differences during the acceleration or Delay phase itself avoided because of the circumferential register correction via the remote register adjustment according to the current one Value of the printing speed, i.e. the speed of the printing press be carried out.
- the value of the speed-controlled direct current drive of the printing press supplied current is detected and range register corrections in the individual printing units according to previously determined characteristics be carried out.
- the register is in Corrects dependency of the load torque which the printing press opposed to the main drive.
- pressure tests are used determines which register differences in the different Printing units are caused when the DC drive supplied motor current assumes different values. From these Registration differences are then in turn for the individual printing units Characteristic curves determined, which indicate which circumference register correction in the respective printing unit at a certain value of the motor current is necessary to a register difference in the circumferential direction avoid.
- 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 one No need to go into this.
- register correction values for the first printing unit can be provided be, from the register differences register correction values for the first printing unit to calculate the following printing units.
- the one in the first Color printed on the printing unit thus becomes the base color and the Registers in the following printing units are based on this standard color related corrected.
- the invention is therefore preferably in the individual Printing units Corrective register corrections not only in dependence the printing speed but also depending on the motor current be performed. To do this, in turn, in pressure tests for a variety of values of printing speed and each different motor currents Correction of circumferential registers for the individual plate cylinders determined so that register differences in the circumferential direction avoided become. To be different at a given printing speed To be able to specify motor currents can be provided to attach braking devices to the individual printing units, at which the braking torque is adjustable.
- the method according to the invention and a correspondingly designed one Control especially avoid register differences in Circumferential direction when the value of the printing speed changes and also in particular by changing the machine temperature in that empirically determined in the individual printing units Corrections to the circumferential register come to an end.
- the drive train is a Sheetfed offset printing machine with several printing units a certain Has torsional rigidity, i.e. at different load moments a predictable torsion between the individual printing units occurs.
- the occurring when the print speed changes Register differences have their cause in the fact that in one Load torque caused by the printing unit is a function of the speed, so the print speed is.
- the print speed changes is not only the one to be fed into the drive train Performance greater, but also the load moments in the individual printing units. This results from predictable Register errors, register differences caused by the invention Procedure and a correspondingly trained control system Corrections to the circumferential register can be compensated again.
- the register correction depending on the detected motor current value the DC drive also closes the fact Use that on the one hand the motor current (armature current) of a direct current drive proportional to the torque applied by the motor is when it is running at a specified speed.
- the drive torque is equal to the load torque the printing press, which is the sum of the individual load moments of the Printing units is. A warming that occurs during printing the machine thus leads to itself in the individual printing units changing load moments, so that at a given speed Current value of the DC drive changes. So that's also predictable by the current value, how big the due to torsion caused register differences in the individual printing units and therefore 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 with register adjustment devices R1 to R4 connected, which is a correction of the register position allow the plate cylinders P1 to P4 at least in the circumferential direction.
- the register adjustment devices R1 to R4 stand with one known register remote adjustment RS in operative connection, which the positioning drives of the register adjustment devices R1 controlled up to R4 according to specified data. Via an input station can also make corrections to the register remote RS be done manually.
- the individual printing units are designed as a train of wheels R. Drive train interconnected by each double-sized spur gears of the impression cylinder G and the corresponding Transfer drums T is formed.
- the R and thus the individual printing units are powered by a DC motor M driven, its performance in the examples shown here Machine concept the power on the drive wheel one Feeding the transfer drum.
- the DC drive M is designed as a converter Main drive HA controlled, this still with one Tachogenerator T is in operative connection with the DC motor M is coupled. In connection 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 each have a signal that the speed n of the DC motor M or the printing speed of the printing press corresponds, and a signal that the motor current (armature current) IA of the DC motor M corresponds.
- the controller S are for individual printing units characteristic curves, according to which in Dependence of the motor current IA and the speed (printing speed) n Adjustment values for the circumferential register of the plate cylinders P1 to P4 can be determined in the various printing units.
- each Correction values for the circumferential register are made simultaneously to present current value of the motor current (armature current) IA as well the speed n (printing speed). It can also be provided to define the color printed in the first printing unit as the base color and carry out circumferential register corrections in the following printing units.
- FIG. 2 shows in principle a characteristic curve for a printing unit, according to which the e.g. empirically determined necessary corrections of the circumferential register ⁇ U as a function of speed n (printing speed) as well as the motor current IA.
- a characteristic field in the form of a skew in Direction of origin of the coordinate system.
- This Characteristic curve or this characteristic field gives the basic Again tendency that the circumferential register correction ⁇ U for a printing unit with increasing speed n even at a given speed value increases with increasing value of the motor current IA.
Description
- Fig. 1
- eine Bogenoffsetdruckmaschine mit Registerfernverstellung und einer erfindungsgemäßen Steuerung, welche mit dem Hauptantrieb der Druckmaschine in Verbindung steht, und
- Fig. 2
- prinzipiell ein Kennlinienfeld, welches den Zusammenhang der nötigen Umfangsregisterkorrekturen in einem Druckwerk als Funktion der Drehzahl sowie des Motorstroms wiedergibt.
- P1 bis P4
- Plattenzylinder
- R1 bis P4
- Registerverstelleinrichtung
- RS
- Registerfernverstellung
- R
- Räderzug
- G
- Antriebsrad Gegendruckzylinder
- T
- Antriebsrad Transferzylinder
- M
- Gleichstrommotor
- HA
- Hauptantrieb (Stromrichter)
- TA
- Tachogenerator
- IA
- Motorstrom
- n
- Drehzahl
- ΔU
- Umfangsregisterkorrektur
Claims (3)
- Vorrichtung zur Vermeidung von Passerdifferenzen beim Betreiben einer Druckmaschine mit mehreren Druckwerken, insbesondere für eine Bogenoffsetdruckmaschine, wobei die Druckwerke Verstelleinrichtungen (R1 - R4) zumindest für das Umfangsregister aufweisen und eine mit dem Antrieb (HA, M) der Druckmaschine in Wirkverbindung stehende Steuerung (S) vorgesehen ist, welche den Betriebszustand des Hauptantriebes (HA) erfaßt und entsprechend der Signale des Hauptantriebes (HA) in Verbindung mit gespeicherten Werten in Abhängigkeit des Betriebszustandes die Registerverstelleinrichtungen (R1 - R4) in den Druckwerken aktiviert, wobei die Steuerung (S) für eine Vielzahl unterschiedlicher Druckgeschwindigkeiten (n) die zur Kompensation von Passerdifferenzen notwendigen Korrekturen für die jeweiligen Druckwerke gespeichert enthält,
dadurch gekennzeichnet,daß die Steuerung (S) mit einem Geber (T) für die aktuelle Druckgeschwindigkeit (n) in Signalverbindung steht,daß die Steuerung (S) die Korrekturwerte für die Passerdifferenzen als Funktion der Druckgeschwindigkeit (n) enthält und in Verbindung mit dem Signal des Gebers (T) zur Einstellung bringt. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,daß die bei der jeweiligen Druckgeschwindigkeit (n) zur Kompensation von Passerdifferenzen notwendigen Registerkorrekturen in Form von ermittelten Werten in der Steuerung (S) abspeicherbar sind. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,daß die bei der jeweiligen Druckgeschwindigkeit (n) zur Kompensation von Passerdifferenzen notwendigen Korrekturen durch theoretische Modellbildung unter Berücksichtigung der Steifigkeit des Antriebszuges der Druckmaschine ermittelt und in der Steuerung (S) abgespeichert sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4434843 | 1994-09-29 | ||
DE4434843A DE4434843A1 (de) | 1994-09-29 | 1994-09-29 | Verfahren zur Vermeidung von Passerdifferenzen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0709184A1 EP0709184A1 (de) | 1996-05-01 |
EP0709184B1 true EP0709184B1 (de) | 1999-10-06 |
Family
ID=6529531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95113362A Expired - Lifetime EP0709184B1 (de) | 1994-09-29 | 1995-08-25 | Vorrichtung zur Vermeidung von Passerdifferenzen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0709184B1 (de) |
AT (1) | ATE185317T1 (de) |
DE (3) | DE4434843A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9621324D0 (en) | 1996-10-12 | 1996-11-27 | Rockwell Graphic Syst | Printing apparatus |
DE59900090D1 (de) * | 1998-01-20 | 2001-06-21 | Baumueller Anlagen Systemtech | Betriebsverfahren für eine Druckmaschine mit einer Mehrzahl von Funktionen sowie steuerungstechnische Anordnung |
DE10132266B4 (de) * | 2000-07-11 | 2015-10-22 | Heidelberger Druckmaschinen Ag | Verfahren zur Regelung des Übergabepassers in einer Bogenrotationsdruckmaschine |
DE10334230B4 (de) * | 2002-08-06 | 2018-05-03 | Heidelberger Druckmaschinen Ag | Vorrichtung zur Korrektur der Lage eines Druckbildes auf einem Bogen einer Bogen-Druckmaschine |
DE102004031508B4 (de) * | 2004-06-30 | 2016-01-07 | Koenig & Bauer Ag | Verfahren zur Korrektur von Passerdifferenzen |
DE102004034431A1 (de) | 2004-07-15 | 2006-02-09 | Windmöller & Hölscher Kg | Registervorsteuerung bei Geschwindigkeitsänderung |
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 |
DE102005033585A1 (de) * | 2005-07-19 | 2007-02-01 | Bosch Rexroth Aktiengesellschaft | Registerregelung |
DE102006007181A1 (de) * | 2006-02-16 | 2007-08-23 | Heidelberger Druckmaschinen Ag | Steuerung einer Druckmaschine mittels Torsionsmodell |
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 |
DE102006050208A1 (de) * | 2006-10-25 | 2008-04-30 | Heidelberger Druckmaschinen Ag | Verfahren zur Kompensation schwingungsbegründeter Umfangsregisterfehler in einer Bogendruckmaschine |
DE102008058458A1 (de) | 2008-11-21 | 2010-05-27 | Robert Bosch Gmbh | Verfahren zur Achskorrektur bei einer Verarbeitungsmaschine sowie Verarbeitungsmaschine |
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 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD115069A1 (de) | 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 |
DD218590A1 (de) * | 1981-10-16 | 1985-02-13 | Foerster Karl Heinz | Verfahren und einrichtung zur fernbedienung von stellgliedern |
DE3148449C1 (de) * | 1981-12-08 | 1983-06-01 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Verfahren zur Verringerung von Registerfehlern und Druckmaschine zur Durchfuehrung des Verfahrens |
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 |
US5049798A (en) * | 1990-03-13 | 1991-09-17 | Harris Graphics Corporation | Control apparatus |
DE4031964A1 (de) * | 1990-10-09 | 1992-04-23 | Lehmacher & Sohn Masch | Rotationsdruckgeraet |
DE4214394C2 (de) * | 1992-04-30 | 1998-08-20 | Asea Brown Boveri | Antriebsvorrichtung für eine längswellenlose Rotationsdruckmaschine |
DE4215228A1 (de) * | 1992-05-09 | 1993-11-11 | Kba Planeta Ag | Antriebssystem für Druckmaschinen |
GB9210536D0 (en) * | 1992-05-16 | 1992-07-01 | Keefe Desmond O | Printing plate registration apparatus |
JPH08510969A (ja) * | 1993-06-01 | 1996-11-19 | コムコ マシナリー,インコーポレイテッド | 再挿入整合制御を備えた自動印刷機 |
-
1994
- 1994-09-29 DE DE4434843A patent/DE4434843A1/de not_active Ceased
- 1994-09-29 DE DE9421695U patent/DE9421695U1/de not_active Expired - Lifetime
-
1995
- 1995-08-25 DE DE59506983T patent/DE59506983D1/de not_active Expired - Lifetime
- 1995-08-25 EP EP95113362A patent/EP0709184B1/de not_active Expired - Lifetime
- 1995-08-25 AT AT95113362T patent/ATE185317T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE4434843A1 (de) | 1996-04-18 |
DE59506983D1 (de) | 1999-11-11 |
ATE185317T1 (de) | 1999-10-15 |
DE9421695U1 (de) | 1996-05-15 |
EP0709184A1 (de) | 1996-05-01 |
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