EP1505025B1 - Method and device for controlling the web tension forces and the cutting register of a rotary printer - Google Patents
Method and device for controlling the web tension forces and the cutting register of a rotary printer Download PDFInfo
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- EP1505025B1 EP1505025B1 EP04018429.3A EP04018429A EP1505025B1 EP 1505025 B1 EP1505025 B1 EP 1505025B1 EP 04018429 A EP04018429 A EP 04018429A EP 1505025 B1 EP1505025 B1 EP 1505025B1
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- web
- pulling force
- control
- register
- register error
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- 238000000034 method Methods 0.000 title claims description 18
- 238000007639 printing Methods 0.000 claims description 43
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 238000012800 visualization Methods 0.000 claims description 2
- 238000011217 control strategy Methods 0.000 claims 1
- 230000008859 change Effects 0.000 description 15
- 101100225582 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) nip-1 gene Proteins 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 11
- 230000033001 locomotion Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
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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
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0081—Devices for scanning register marks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/1882—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling longitudinal register of web
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/11—Length
- B65H2511/112—Length of a loop, e.g. a free loop or a loop of dancer rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/10—Speed
Definitions
- the invention relates to a method and a device for regulating the web tension and the cutting register error of a web-fed rotary printing press.
- the transit time of the web image points is adjusted at a constant web path, while according to the prior art, a web length change is made at a constant web speed.
- an image information or measuring marks of the printed web which is suitable for the deviation of the position of the printed image relative to its desired position with respect to the location and time of the cut, ie for the cut register error, is detected, evaluated and / or converted into an actual value ,
- the determination of the controlled variables of sensors is assumed, but models can partially or completely replace these sensors, ie. the magnitudes are estimated in an equivalent manner by means of mathematical or empirical models
- a part-cutting register error to be regulated and a web tension to be controlled lie in different web sections, that the speed v k of a non-printing nip k is the manipulated variable for the partial cut register error Y 1 ⁇ k * and one of the velocities ⁇ i , ⁇ i -1 , ⁇ i -2 , ⁇ i -3 to v, is the manipulated variable for the web tension F i -1, i in a preceding web section, the web tensile forces F i -1 , i , F i -2, i -1 , F i -3, i -2 to F 12
- Use of one of the velocities ⁇ i -1 , ⁇ i -2 , ⁇ i -3 to ⁇ 1 may not be self-compensating as a manipulated variable.
- a partial cutting register error to be regulated and a web tension to be controlled can lie in different web sections, wherein the manipulated variable for the partial cut register error Y 1 ⁇ k * the speed ⁇ k of a non-printing nip K k and the manipulated variable for the web tensile force F k + 1, k + 2 , F k + 2, k + 3 to F n -2, n -1 in a path behind it, the velocity v k +1 , ⁇ k +2 to ⁇ n -1 .
- a part-cutting register error to be controlled and a web tension F k -1, k to be controlled can lie in the same web section, wherein the speed v k of a non-printing nip k is the manipulated variable for the partial cut register error Y 1 ⁇ k * and the velocity ⁇ k , ⁇ k -1 , ⁇ k -2 , ⁇ k -3 to ⁇ 1 is the manipulated variable for the web tensile force F k -1, k , the web tensile forces F k -1, k , F k - 2, k -1 , F k -3, k -2 to F 12 when using the velocities ⁇ k -1 , ⁇ k -2 , ⁇ k -3 to ⁇ 1 may not be self-compensating as a manipulated variable.
- the advantage is that the cut register error can be measured immediately before the knife cylinder and controlled by a register controller, which is superimposed on the register controller of the terminal point k.
- the solution according to the invention requires no additional mechanical web guide element.
- existing non-printing train units are used, such.
- pull rollers in Falzended the funnel roller or more lying in the path between the last printing unit and knife cylinder traction units, which are preferably driven by means of variable-speed individual drives.
- the parameters entering the cutting register control path are largely independent of the properties of the rotary printing press. Furthermore, the cutting register accuracy can be significantly increased by the new method.
- the invention also relates to a device for carrying out the method for controlling the cut register on a rotary printing press, the terminal points 1 to n with drive motors with associated current, speed and optionally angle control are independently drivable and at the cut register error Y 1 n and / or associated subregister error Y 12 * . Y 13 * . Y 1 ⁇ i * . Y 1 ⁇ k * . Y 1 .
- n - 1 * on or in front of a knife cylinder (nip n) and / or on or before one or more of this knife cylinder upstream clamping points 1 to n-1 can be detected by a certain image information or measurement marks of the printed web by means of at least one sensor, a web tension F by means of at least one other Sensor is detectable and recorded by the sensors register deviations Y 12 * . Y 13 * . Y 1 ⁇ i * . Y 1 ⁇ k * . Y 1 .
- the unwinding device K 0 is controllable by means of dancer rolls or web tension control loops such that with the aid of the peripheral speed v 1 of the nip K 1 or with the aid of the web tension F 01 the unsteady and stationary mass flow introduced into the system can be changed.
- the sensors and associated evaluation devices at the nominal speed of the printing press information about the register error or errors Y 14 ; Y 13 * ; Y 1 ⁇ i * ; Y ik * and provide the web tensile force F k -1, k and F i -1, i , respectively , in minimum time, and are implemented with interfaces which are the register errors Y 14 ; Y 13 * ; Y 1 ⁇ i * ; Y ik * and web tensile forces F k -1, k and F i -1, i transmitted via field buses, Ethernet or other communication buses and communication interfaces.
- control and / or regulating device is implemented as a central computer, preferably in the control station, or as an embedded computer, preferably in a control or control cabinet, or functionally decentralized in the respective inverter devices, all information (actual values, setpoints, crizalgorythmen) in real time are processable.
- the general system to be considered consists of the driven by controlled drive motors clamping points 0 to n, K 0 to K n , where K 0 the unwinding, K 1 all printing nips, K 2 to K n -1 all non-printing nips and K n den Represent knife cylinder.
- the web force in a section i-1, i is referred to as F i -1, i .
- the magnitudes ⁇ i are the peripheral velocities of the clamping points K i , which are approximated by the behavior of wound Coulomb friction rollers.
- z T the changes of the modulus of elasticity and the section of the incoming web are summarized.
- the register error Y 1 n on the knife cylinder is as Total cut register error or short referred to as cut register error.
- a previously accumulated register error Y 1 ⁇ i * . measured at a non-printing nip i, is called part cut register error or short part register error.
- the unsteady or stationary mass flow supplied to the system via the input of the nip 1 ( K 1 ), measured in kgs -1 , is determined by the peripheral speed v 1 of the nip 1 ( K 1 ) and the strain ⁇ 01 .
- the force F 01 of the strain ⁇ 01 is proportional.
- the force F 01 is set by the contact force of a dancer roller or by a tension control loop - the peripheral speed of the nip 0 - directly or indirectly via a further setting to the web tension - according to the position setpoint or force setpoint.
- changes of F 01 or ⁇ 1 change the transient as well as the stationary mass flow.
- the peripheral speeds of the other terminal points can - assuming Hooke'sches material - not change the mass flow in the following track sections stationary.
- the peripheral speeds are referred to below as speeds.
- the part register errors become Y 1 ⁇ i * and the forces influenced by the speeds of non-printing nips.
- the stationary mass flow rate ⁇ 1 of the nip 1 or the force F 01 is used.
- the position of the knife cylinder can also be changed.
- n nipples of Fig. 1 is a simplified form of a rotary printing machine, in particular a web offset printing press.
- nip 0 K 0
- following nip 1 K 1
- all printing units are summarized.
- Clamping point 2 K 2
- terminal 3 K 3
- the following terminal points i-1 to n-1 K i -1 to K n -1 ) marked with general indices are driven pulling or working units.
- the nip n ( K n ) denotes the folding unit with the cutting-determining knife cylinder.
- the quantities ⁇ i are the circumferential speeds of the clamping points K i , hereinafter referred to as speeds. In rotary printing presses, the term “overfeed” is used instead of the term "speed”.
- the system of Fig. 1 is understood as a mechanical controlled system with associated actuators (controlled drives).
- Controlled variables are the part-cut register errors Y 1 ⁇ i * . Y 1 ⁇ k * . etc. and the total cut register error Y 1 n and the web tensile forces F i -1, i , F i , i +1 , F k -1, k , F k , k +1 , etc.
- control loops for the web tensile force F i -1, i , the partial register errors Y 13 * and Y 1 ⁇ i * and the total register error Y 1 n are the web tensile force F i -1, i , the partial register errors Y 13 * and Y 1 ⁇ i * and the total register error Y 1 n .
- Manipulated variables are the leadings or velocities of the clamping points i-1 to n-1 ( K i -1 to K n -1 ) and the lead or position of the nip 1 and the thoroughlysbahnzugkraft F 01 .
- the partial register errors and the web tensile forces are to be decoupled from one another in accordance with preset setpoint values in the control-technical sense.
- the total cut register error Y 1 n is the deviation of the intersecting line between two printed images from their correct position at the time of intersection of the nip (knife cylinder) n ( K n ) with respect to the nip 1 ( K 1 ).
- the actuators form the controlled drive motors M 0 to M n .
- Input variables x iw shown represent the angular velocity (speed) or angle setpoints of the controlled drives M 0 to M n .
- the part register error Y 1 ⁇ i * with the register controller i.1 with the help of the speed v i of the terminal point i ( K i ) - for example, a turning unit - to the setpoint Y 1 ⁇ i . w * . for example Y 1 ⁇ i . w * 0 . regulated.
- This speed control loop i.2 of the drive motor Mi associated with the clamping point i ( K i ) is subordinated to this register control loop.
- the very small equivalent time constant of the current loop underlying the speed control loop is negligible.
- the partial register error Y 13 * to the setpoint Y 1 ⁇ i . w * . for example Y 1 ⁇ i . w * 0 . regulated.
- the web tension F i -1, i must therefore be limited.
- a tensile force sensor 4 for example as a measuring roller, measured, fed to the comparison point of a traction controller 2.1 and compared with the desired value F i -1, i , w .
- the tension regulator 2.1 for example, at the terminal point 2 ( K 2 ), ensures compliance with the desired web tension F i -1, i and simultaneously allows their papiersortentouche specification by the machine operator in the overfeed adjustment of the terminal point i ( K i ) no longer must intervene.
- the draft regulator 2.1 specifies the angular velocity setpoint ⁇ 2 w for the nip 2 ( K 2 ).
- Each angle control loop consists of an angle controller, the subordinate speed control loop including current loop (summarized in block 2.2).
- F 23 not be self-compensating. Self-compensation does not occur if, for example, terminal 2 ( K 2 ) is preceded by a dryer. Then F 23 and all following forces including F i -1, i are fully controllable (see point 7).
- the controlled variables namely the partial register errors in the example Y 13 * and Y 1 ⁇ i * and the tensile force F i -1, i , are dependent on each other by the structure of the controlled system, ie coupled together.
- the engagement of the tension controller 2.1 is connected to a speed control of the terminal point 2 ( K 2 ) and calls a partial register error Y 12 * thus also partial register error Y 13 * and Y 1 ⁇ i * . out.
- the register control loop (controller i.1) now tries this error Y 1 ⁇ i * . by a speed change ⁇ i back to the setpoint Y 1 ⁇ i . w *
- the entire system can become unstable.
- j partial register errors ( Y 13 * ; Y 1 ⁇ i * . Y 1 ⁇ m * . ... ) and q web tensile forces ( F i -1, i , F k -1, k , ...), ie any number of sub-register errors and web tensile forces are controlled, for which j + q manipulated variables are necessary.
- a partial register error to be regulated and a track traction to be controlled need not be in the same track section.
- the multi-variable controlled system can be decoupled with the aid of the theory of multi-variable control, in the case of two controlled variables especially according to [Föl 88]. Without decoupling measures, the multi-variable control would be unstable. In particular, the multi-variable control is to be designed so that the web tensile forces and the partial register errors are decoupled from each other by corresponding setpoints in the control-technical sense.
- both the nip 1 (pressure units) and the web tension F 01 come into question, both because of their ability to change the introduced into the system transient and steady state mass flow that they directly or via further upstream Web tension adjustment devices change the peripheral speed of the unwinder.
- the contact pressure of the dancer or pendulum roller z. B. as a control variable for the web tension F i -1, i in the desired section i-1, i selected.
- the contact pressure 2 F 01 of the dancer roller is adjusted, for example, via the pressure in the associated pneumatic cylinder via a corresponding Pressure control loop.
- the dancer or pendulum roller system is to be equipped with the necessary data exchange with communication interfaces.
- nip 1 printing units
- the speed ⁇ 1 of the printing units is changed, this change also being communicated to the nominal position value of the knife cylinder ( K n ) and possibly further nip points.
- the force F i , i +1 is not fully controllable by ⁇ i .
- ⁇ i such a property of self-compensation must not be present.
- ink and / or moisture is introduced during the printing process and / or when heat is applied, for example by means of a dryer in one of the sections before the nip i ( K i )
- the self-compensation characteristic is lost, and also F i , i + 1 changes permanently.
- ⁇ i can also be used as a manipulated variable in a traction control loop.
- nip 2 K 2
- a dryer T upstream, so the speed v 2 as a control variable for the force F i -1, i in a traction control circuit (controller 2.1) can be used, said this Drive control 2.2 is superimposed.
- the traction control loop then works, for example, with a Register control loop (controller i.3) for Y 1 ⁇ i * in decoupled form together.
- the force F 23 could be regulated.
- incoming disturbances are thus detected well before the knife cylinder and can be adjusted at this location.
- the error at the location of the cut is thus kept small, but in the course of the train - mostly in the form of several partial webs - up to the place of the cut more sources of interference occur, which cause a cutting register error. Therefore, the cut register error will be in the system Fig. 1 denoted as Y 1 n , measured by a sensor 3 immediately before the knife cylinder n ( K n ) and fed to a further register controller i.3. This now delivers the setpoint Y 1 ⁇ i . w * . which will change as a result of the specification of the setpoint Y 1 n , w in general.
- the now subordinate control loop for Y 1 ⁇ n * ensures that the controller i.3 for Y 1 n essentially has to compensate for the disturbances occurring after the terminal point i ( K i ).
- the superimposed register control loop i.3 is able to work together with other possible control variants for forces and partial register errors.
- the setpoint for the partial register error could also be used Y 13 .
- w * be influenced by the register controller i.3 in a suitable manner.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Regelung der Bahnzugkräfte und der Schnittregisterfehler einer Rollenrotationsdruckmaschine.The invention relates to a method and a device for regulating the web tension and the cutting register error of a web-fed rotary printing press.
Bei Rollenrotationsdruckmaschinen ist es bekannt, als Stellglied für die Schnittregisterregelung eine in Linearführungen verfahrbare Stellwalze einzusetzen, mit der die Papierweglänge zwischen zwei Zugeinheiten verändert und damit der Registerfehler korrigiert wird. Derartige Registerwalzen sind beispielsweise in der
Es ist Aufgabe der Erfindung, ein einfaches Verfahren zum Regeln des Schnittregisters zu schaffen.It is an object of the invention to provide a simple method for controlling the cut register.
Die Aufgabe wird mit den Merkmalen der unabhängigen Ansprüche gelöst.The object is achieved with the features of the independent claims.
Bei dem erfindungsgemäßen Verfahren wird die Laufzeit der Bahnbildpunkte bei einem konstanten Bahnweg verstellt, während nach dem Stand der Technik eine Bahnlängenänderung bei konstanter Bahngeschwindigkeit vorgenommen wird.In the method according to the invention, the transit time of the web image points is adjusted at a constant web path, while according to the prior art, a web length change is made at a constant web speed.
Bedeutungsvoll ist, dass die Regelung des Gesamt-Schnittregisterfehlers
Bevorzugt wird für die Ermittlung der Regelgrößen von Sensoren ausgegangen, es können aber auch Modelle diese Sensoren teilweise oder völlig ersetzen, d.h. die Größen werden in äquivalenter Weise mit Hilfe von mathematischen oder empirischen Modellen geschätztPreferably, the determination of the controlled variables of sensors is assumed, but models can partially or completely replace these sensors, ie. the magnitudes are estimated in an equivalent manner by means of mathematical or empirical models
Wichtig ist, dass mit Hilfe von Entkopplungsstrategien die Teil-Schnittregisterfehler und Bahnzugkräfte unabhängig voneinander durch entsprechende Sollwerte vorgegeben werden.It is important that with the help of decoupling strategies, the partial cutting register errors and web tensile forces are specified independently of each other by corresponding setpoints.
Hervorzuheben ist, dass ein zu regelnder Teil-Schnittregisterfehler und eine zu regelnde Bahnzugkraft in unterschiedlichen Bahnabschnitten liegen, dass die Geschwindigkeit ν k einer nicht druckenden Klemmstelle k die Stellgröße für den Teilschnittregisterfehler
Von Vorteil ist, dass der Schnittregisterfehler unmittelbar vor dem Messerzylinder gemessen und durch einen Registerregler geregelt werden kann, der dem Registerregler der Klemmstelle k überlagert wird.The advantage is that the cut register error can be measured immediately before the knife cylinder and controlled by a register controller, which is superimposed on the register controller of the terminal point k.
Die erfindungsgemäße Lösung erfordert kein zusätzliches mechanisches Bahnführungselement. Zur Schnittregisterkorrektur werden vorhandene, nicht druckende Zugeinheiten verwendet, wie z. B. die Kühleinheit, Zugwalzen im Falzaufbau, die Trichterwalze oder weitere im Bahnverlauf zwischen letztem Druckwerk und Messerzylinder liegende Zugeinheiten, die vorzugsweise mittels drehzahlvariablen Einzelantrieben angetrieben sind.The solution according to the invention requires no additional mechanical web guide element. For cutting register correction existing non-printing train units are used, such. As the cooling unit, pull rollers in Falzaufbau, the funnel roller or more lying in the path between the last printing unit and knife cylinder traction units, which are preferably driven by means of variable-speed individual drives.
Die in die Schnittregisterregelstrecke eingehenden Parameter sind weitgehend unabhängig von den Eigenschaften der Rotationsdruckmaschine. Weiterhin lässt sich die Schnittregistergenauigkeit durch das neue Verfahren wesentlich erhöhen.The parameters entering the cutting register control path are largely independent of the properties of the rotary printing press. Furthermore, the cutting register accuracy can be significantly increased by the new method.
Wichtig ist, dass bei der Regelung einer Bahnzugkraft diese nur in einem Bahnabschnitt verändert wird oder dass sich mit dieser auch alle folgenden Bahnzugkräfte ändern.It is important that when regulating a web tension this is changed only in one path section or that change with this all the following Bahnzugkräfte.
Die Erfindung betrifft auch eine Vorrichtung zur Durchführung der Verfahren zum Regeln des Schnittregisters an einer Rotationsdruckmaschine, deren Klemmstellen 1 bis n mit Antriebsmotoren mit zugeordneter Strom-, Drehzahl- und gegebenenfalls Winkelregelung unabhängig voneinander antreibbar sind und bei der der Schnittregisterfehler Y 1n und/oder damit verbundene Teilregisterfehler
Weitere Merkmale und Vorteile ergeben sich aus den Unteransprüchen in Verbindung mit der Beschreibung.Other features and advantages will become apparent from the dependent claims in conjunction with the description.
Die Erfindung soll nachfolgend an einigen Ausführungsbeispielen näher erläutert werden. In den Zeichnungen zeigt schematisch:
- Fig. 1:
- Klemmstellen-Schema einer Rotationsdruckmaschine mit geregelten Antrieben,
- Fig. 1:
- Clamping diagram of a rotary printing press with controlled drives,
Das zu betrachtende allgemeine System besteht aus den durch geregelte Antriebsmotoren angetriebenen Klemmstellen 0 bis n, K 0 bis Kn , wobei K 0 die Abwickeleinrichtung, K 1 alle druckenden Klemmstellen, K 2 bis K n-1 alle nicht druckenden Klemmstellen und Kn den Messerzylinder darstellen. Die Bahnkraft in einem Abschnitt i-1, i wird als F i-1,i bezeichnet. Die Größen ν i sind die Umfangsgeschwindigkeiten der Klemmstellen Ki , die durch das Verhalten umschlungener Walzen mit Coulomb'scher Reibung angenähert seien. In zT sind die Änderungen des Elastizitäts-Moduls und des Querschnitts der einlaufenden Bahn zusammengefasst. Der Registerfehler Y 1n am Messerzylinder sei als Gesamt-Schnittregisterfehler oder kurz als Schnittregisterfehler bezeichnet. Ein davor aufgelaufener Registerfehler
Der dem System über den Eingang der Klemmstelle 1 (K 1) zugeführte instationäre oder stationäre Massenstrom, gemessen in kgs -1, wird durch die Umfangsgeschwindigkeit ν1 der Klemmstelle 1 (K 1) und die Dehnung ε01 bestimmt. Im Falle von Hooke'schem Material ist die Kraft F 01 der Dehnung ε01 proportional. Die Kraft F 01 wird durch die Anpresskraft einer Tänzerwalze oder durch einen Zugkraftregelkreis eingestellt, die - dem Lagesollwert bzw. Kraftsollwert entsprechend - unmittelbar oder mittelbar über eine weitere Einstellung zur Bahnzugkraft - die Umfangsgeschwindigkeit der Klemmstelle 0 steuern. Im Folgenden wird angenommen, dass Änderungen von F 01 oder von ν1 den instationären wie stationären Massenstrom verändern. Die Umfangsgeschwindigkeiten der übrigen Klemmstellen können - Hooke'sches Material vorausgesetzt - den Massenstrom in den ihnen folgenden Bahnabschnitten nicht stationär ändern. Die Umfangsgeschwindigkeiten werden im Folgenden kurz Geschwindigkeiten genannt.The unsteady or stationary mass flow supplied to the system via the input of the nip 1 ( K 1 ), measured in kgs -1 , is determined by the peripheral speed v 1 of the nip 1 ( K 1 ) and the strain ε 01 . In the case of Hooke's material, the force F 01 of the strain ε 01 is proportional. The force F 01 is set by the contact force of a dancer roller or by a tension control loop - the peripheral speed of the nip 0 - directly or indirectly via a further setting to the web tension - according to the position setpoint or force setpoint. In the following, it is assumed that changes of F 01 or ν 1 change the transient as well as the stationary mass flow. The peripheral speeds of the other terminal points can - assuming Hooke'sches material - not change the mass flow in the following track sections stationary. The peripheral speeds are referred to below as speeds.
Ziel ist es, einerseits den Schnittregisterfehler Y 1n möglichst auf dem Sollwert Y 1n,w , beispielsweise auf dem Wert Y 1n =Y 1n,w = 0, zu halten und andererseits, im regelungstechnischen Sinne entkoppelt davon, in einem oder mehreren Bahnabschnitten eine bestimmte Bahnzugkraft vorzugeben. Um den Schnittregisterfehler Y 1n dem Sollwert Y 1n,w zu halten und die Kräfte einzustellen, werden die Teilregisterfehler
Die folgende Funktionsbeschreibung wird an einem System aus n Klemmstellen nach
Das System bestehend aus n Klemmstellen von
Das System von
Der Schnittregisterfehler Y 1n ist der Fehler der Schnittkante an der Klemmstelle n (Kn ) zum Schnittzeitpunkt gegenüber ihrer Lage an der Klemmstelle 1 (K 1), bezogen auf ihre korrekte Lage. Die Stellglieder bilden die geregelten Antriebsmotoren M0 bis Mn. Die in
The cutting register error Y 1 n is the error of the cutting edge at the n = n ( K n ) at the time of cutting in relation to its position at the nip 1 ( K 1 ), based on their correct position. The actuators form the controlled drive motors M 0 to M n . In the
Der Teil-Registerfehler
Nachdem die Registerregelung über die Voreilung der Klemmstelle i (Ki ) mit einer Änderung der Bahnzugkraft F i-1,i verbunden ist, ist nicht auszuschließen, dass große Störungen zu kleine oder zu große Bahnspannungen verursachen, die zum Bahnriss führen können. Die Bahnzugkraft F i-1,i muss daher begrenzt werden. Dazu wird sie mit Hilfe eines Zugkraftsensors 4 - beispielsweise als Messwalze ausgeführt - gemessen, dem Vergleichspunkt eines Zugkraftreglers 2.1 zugeführt und mit dem Sollwert F i-1,i,w verglichen. Der Zugkraftregler 2.1, beispielsweise an der Klemmstelle 2 (K 2), sorgt für die Einhaltung der gewünschten Bahnzugkraft F i-1,i und ermöglicht gleichzeitig ihre papiersortenabhängige Vorgabe durch den Maschinenbediener, der in die Voreilungseinstellung der Klemmstelle i (Ki ) nicht mehr eingreifen muss. Der Zugkraftregler 2.1 gibt den Winkelgeschwindigkeitsollwert ω2w für die Klemmstelle 2 (K 2) vor. Jeder Winkelregelkreis besteht aus einem Winkelregler, dem unterlagerten Drehzahlregelkreis einschließlich Stromregelkreis (zusammengefasst in dem Block 2.2). Bei Änderung von ν2 darf F 23 nicht selbstkompensierend sein. Eine selbstkompensation tritt nicht auf, wenn z.B. der Klemmstelle 2 (K 2) ein Trockner vorgeschaltet ist. Dann sind F 23 und alle folgenden Kräfte einschließlich F i-1,i vollständig steuerbar (vgl. Punkt 7).After the register control via the advance of the terminal point i ( K i ) is associated with a change in the web tension F i -1, i , it can not be ruled out that large disturbances cause too small or too large web tension which can lead to web breakage. The web tension F i -1, i must therefore be limited. For this purpose, it is measured by means of a tensile force sensor 4, for example as a measuring roller, measured, fed to the comparison point of a traction controller 2.1 and compared with the desired value F i -1, i , w . The tension regulator 2.1, for example, at the terminal point 2 ( K 2 ), ensures compliance with the desired web tension F i -1, i and simultaneously allows their papiersortenabhängige specification by the machine operator in the overfeed adjustment of the terminal point i ( K i ) no longer must intervene. The draft regulator 2.1 specifies the angular velocity setpoint ω 2 w for the nip 2 ( K 2 ). Each angle control loop consists of an angle controller, the subordinate speed control loop including current loop (summarized in block 2.2). When changing from ν 2 may F 23 not be self-compensating. Self-compensation does not occur if, for example, terminal 2 ( K 2 ) is preceded by a dryer. Then F 23 and all following forces including F i -1, i are fully controllable (see point 7).
Die Regelgrößen, nämlich im Beispiel die Teil-Registerfehler
Statt nur eines oder wie im Beispiel von zwei Teil-Registerfehlern oder nur einer Bahnkraft können auch j Teil-Registerfehler (
Die Mehrgrößen-Regelstrecke kann mit Hilfe der Theorie der Mehrgrößenregelungen, im Falle von zwei Regelgrößen speziell nach [Föl 88], entkoppelt werden. Ohne Entkopplungsmaßnahmen wäre die Mehrgrößenregelung instabil. Insbesondere ist die Mehrgrößenregelung so auszulegen, dass die Bahnzugkräfte und die Teil-Registerfehler durch entsprechende Sollwerte im regelungstechnischen Sinne entkoppelt voneinander vorgebbar sind. Zur Kompensation der Zeitkonstanten der durchlaufenden Bahn in den verschiedenen Bahnabschnitten ist es oft vorteilhaft, Geschwindigkeiten von Klemmstellen, die vor oder hinter einer Klemmstelle i (Ki ) liegen, die den Registerfehler
Das Prinzip und die Realisierung der Entkopplung werden in der parallelen Anmeldung
Oft können die Zuordnungen von Stellgrößen und Regelgrößen vertauscht werden, wie dies ebenfalls in der genannten parallelen Anmeldung
Often, the assignments of manipulated variables and controlled variables can be interchanged, as is also the case in the aforementioned parallel application
Als Stellgrößen für die Bahnzugkraft in einem Bahnabschnitt kommt sowohl die Klemmstelle 1 (Druckeinheiten) als auch die Bahnzugkraft F 01 in Frage, beide wegen ihrer Eigenschaft, den in das System eingeleiteten instationären und stationären Massenstrom dadurch zu verändern, dass sie unmittelbar oder über weitere vorgeschaltete Einrichtungen zur Bahnkrafteinstellung die Umfangsgeschwindigkeit des Abwicklers verändern.
Im Falle der Kraft F 01 wird die Anpresskraft der Tänzer- oder Pendelwalze z. B. als Stellgröße für die Bahnzugkraft F i-1,i im gewünschten Abschnitt i-1,i gewählt. Dabei wird die Anpresskraft 2F 01 der Tänzerwalze nachgestellt, z.B. über den Druck im zugehörigen Pneumatik-Zylinder über einen entsprechenden Druckregelkreis. Das Tänzer- oder Pendelwalzensystem ist für den notwendigen Datenaustausch mit Kommunikationsschnittstellen auszurüsten.As a manipulated variable for the web tension in a web section both the nip 1 (pressure units) and the web tension F 01 come into question, both because of their ability to change the introduced into the system transient and steady state mass flow that they directly or via further upstream Web tension adjustment devices change the peripheral speed of the unwinder.
In the case of force F 01 , the contact pressure of the dancer or pendulum roller z. B. as a control variable for the web tension F i -1, i in the desired section i-1, i selected. The contact pressure 2 F 01 of the dancer roller is adjusted, for example, via the pressure in the associated pneumatic cylinder via a corresponding Pressure control loop. The dancer or pendulum roller system is to be equipped with the necessary data exchange with communication interfaces.
Im Falle der Klemmstelle 1 (Druckeinheiten) wird die Geschwindigkeit ν1 der Druckeinheiten verändert, wobei diese Änderung auch dem Lagesollwert des Messerzylinders (Kn ) und eventuell weiterer Klemmstellen mitgeteilt wird.In the case of nip 1 (printing units), the speed ν 1 of the printing units is changed, this change also being communicated to the nominal position value of the knife cylinder ( K n ) and possibly further nip points.
Wird für die Regelung einer Kraft F i,i+1 die Geschwindigkeit einer der angrenzenden Klemmstellen i oder i,i+1 (Ki oder K i,i+1) gewählt, so ist die Eigenschaft der sog. Selbstkompensation der Kraft F i,i+1 zu beachten. Im Falle einer Änderung von ν i+1 ändert sich die Kraft F i,i+1 bleibend, ist also durch ν i+1 vollständig steuerbar. Im Falle einer Änderung von ν i hingegen ändert sich die Kraft F i,i+1 im Falle vom rein elastischem Bahnmaterial (Hook'schem Material) nur vorübergehend, d.h. nicht bleibend. Daher ist die Kraft F i,i+1 durch ν i nicht vollständig steuerbar. Um dennoch auch ν i als Stellgröße verwenden zu können, darf eine solche Eigenschaft der Selbstkompensation nicht vorliegen. Bei Eintrag von Farbe und/oder Feuchtigkeit beim Bedruckvorgang und/oder bei Eintrag von Wärme, z.B. mittels eines Trockners in einem der Abschnitte vor der Klemmstelle i (Ki ), geht die Eigenschaft der Selbstkompensation verloren, und auch F i,i+1 ändert sich bleibend. In diesem Fall ist auch ν i als Stellgröße in einem Zugkraftregelkreis verwendbar.If the speed of one of the adjacent clamping points i or i, i + 1 ( K i or K i , i +1 ) is selected for the regulation of a force F i , i +1 , the property of the so-called self-compensation of the force F i is selected to pay attention to i +1 . In the case of a change of ν i +1 , the force F i , i +1 changes permanently, ie is completely controllable by ν i +1 . In the case of a change of ν i, however, the force F i , i +1 changes only temporarily, ie not permanently, in the case of purely elastic web material (Hooke's material). Therefore, the force F i , i +1 is not fully controllable by ν i . However, in order to be able to use ν i as a manipulated variable, such a property of self-compensation must not be present. When ink and / or moisture is introduced during the printing process and / or when heat is applied, for example by means of a dryer in one of the sections before the nip i ( K i ), the self-compensation characteristic is lost, and also F i , i + 1 changes permanently. In this case, ν i can also be used as a manipulated variable in a traction control loop.
Ist der Klemmstelle 2 (K 2), beispielsweise im Falle einer Illustrationsdruckmaschine, ein Trockner T vorgeschaltet, so kann die Geschwindigkeit ν2 als Stellgröße für die Kraft F i-1,i in einem Zugkraftregelkreis (Regler 2.1) verwendet werden, wobei dieser der Antriebsregelung 2.2 überlagert wird. Der Zugkraftregelkreis arbeitet dann beispielsweise mit einem Registerregelkreis (Regler i.3) für
Durch die Wahl einer Geschwindigkeit ν i als Stellgröße für die Regelung der Bahnzugkraft F i-1,i wird diese Kraft bleibend verändert, alle folgenden Bahnzugskräfte nur vorübergehend, falls F i,i+1 selbstkompensierend ist. Durch die Wahl einer Geschwindigkeit ν i-1 als Stellgröße für die Regelung der Bahnzugkraft F i-1,i werden diese und alle folgenden Kräfte bleibend verändert, falls F i-1,i , wie oben beschrieben, nicht selbstkompensierend ist.By choosing a speed ν i as the manipulated variable for controlling the web tension F i -1, i , this force is permanently changed, all following web tension forces only temporarily, if F i , i +1 is self-compensating. By choosing a speed v i -1 as the manipulated variable for controlling the web tension F i -1, i , these and all following forces are permanently changed if F i -1, i , as described above, is not self-compensating.
Es ist zu beachten, dass es möglich wäre, die Kraft F i-1,i dadurch bleibend zu verändern, dass mit der Geschwindigkeit ν i-1 die Kraft F i-2,i-1 geändert und ν i mitgeführt würde, so dass ν i = ν i-1 wäre. Dann steht jedoch ν i nicht mehr als unabhängige Stellgröße für
Die kombinierte Schnittregister-Bahnzugkraftregelung einer Rollen-Rotationsdruckmaschine nach obiger Beschreibung ist in der Lage, beispielsweise einerseits den Teil-Registerfehler
Alle, z.B. durch einen Rollenwechsel verursachten, einlaufenden Störungen werden dadurch bereits weit vor dem Messerzylinder erkannt und können an diesem Ort ausgeregelt werden. Der Fehler am Ort des Schnittes wird dadurch zwar klein gehalten, aber im weiteren Laufe der Bahn - meistens in Form von mehreren Teilbahnen - bis zum Ort des Schnittes treten weitere Störquellen auf, die einen Schnittregisterfehler verursachen. Daher wird der Schnittregisterfehler, im System nach
Der Fall des mehrbahnigen Betriebes wird in der parallelen Anmeldung
- 11
- Sensorsensor
- 22
- Sensorsensor
- 33
- Sensorsensor
- 44
- Sensorsensor
- 1.21.2
- Drehzahlregelkreis (einschließlich Stromregelkreis)Speed control loop (including current loop)
- 2.12.1
- BahnzugkraftreglerWeb tension regulator
- 2.22.2
- Drehzahlregelkreis (einschließlich Stromregelkreis)Speed control loop (including current loop)
- 3.13.1
- Registerreglerregister controller
- 3.23.2
- DrehzahlregelkreisSpeed control loop
- i.1i.1
- Registerreglerregister controller
- i.2i.2
- DrehzahlregelkreisSpeed control loop
- i.3i.3
- Registerreglerregister controller
- K0 K 0
-
Klemmstelle 0
Terminal point 0 - K1 K 1
-
Klemmstelle 1
Clamp 1 - K2 K 2
-
Klemmstelle 2
Clamp 2 - K3 K 3
-
Klemmstelle 3
Clamp 3 - K4 K 4
- Klemmstelle 4Clamp 4
- Ki K i
- Klemmstelle iClamp i
- Kk K k
- Klemmstelle kNip k
- Kn K n
- Klemmstelle nNip n
- Fij F ij
- Bahnzugkraft im Abschnitt i-jWeb tension in section i-j
- F01 F 01
- Eingangs-BahnzugkraftInput web tension
- F23 F 23
- Bahnzugkraft zwischen K2 und K3Web tension between K2 and K3
- Fi-1,i,w F i-1, i, w
- Bahnzugkraft-SollwertWeb tension setpoint
- xiw x iw
- Eingangsgrößeinput
- vi v i
- Umfangsgeschwindigkeit der Klemmstelle iPeripheral speed of the clamping point i
- ωi ω i
- Winkelgeschwindigkeit / Drehzahl der Klemmstelle iAngular velocity / rotational speed of the clamping point i
- ωiw ω iw
- Winkelgeschwindigkeits-SollwertAngular velocity setpoint
- αiw α iw
- Winkelsollwert / Lagesollwert der Klemmstelle iAngle setpoint / position setpoint of clamping point i
- Y13*Y 13 *
- Teil-(Schnitt-)Registerfehler zwischen K1 und K3Partial (section) register error between K1 and K3
- Y13w*Y 13w *
- Register-SollwertRegister setpoint
- Y1n Y 1n
- (Gesamt-)Schnittregisterfehler(Total) cut register error
- Y1n,w Y 1n, w
- Sollwertsetpoint
- RF R F
- ZugkraftreglerDraft regulators
- RY R Y
- Registerreglerregister controller
- TT
- Trocknerdryer
- Mi M i
- Antriebsmotor für Klemmstelle i mit zugehöriger RegelungDrive motor for terminal point i with associated control
- [Föl 88][Föl 88]
-
Föllinger, O.: Regelungstechnik. Heidelberg: Hüthig-Verlag 1988Föllinger, O .: Control technology. Heidelberg: Hüthig-Verlag 1988 - [Bra 96][Bra 96]
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Brandenburg, G.; Papiernik, W.: Feedforward and feedback strategies applying the principle of input balancing for minimal errors in CNC machine tools. Proc. 4th Int. Workshop on Advanced Motion Control, AMC '96-MIE, Vol. 2, pp. 612-618Brandenburg, G .; Papiernik, W .: Feedforward and feedback strategies using the principle of input balancing for minimal errors in CNC machine tools. Proc. 4th Int. Workshop on Advanced Motion Control, AMC '96 -MIE, Vol. 2, pp. 612-618
Claims (14)
- A method for controlling the overall cut register error (Y1n ) of a rotary printing press with the help of the control of at least one part cut register (Y*1i ) and for controlling at least one web pulling force (F i-1,i ), wherein the printing press comprises printing points 0 to n (K0 to Kn ) driven in a controlled manner, wherein for influencing j part cut register errors and q web pulling forces j + q adjusting quantities are used, that circumferential speeds and/or angle positions of clamping points (K1 to K n-1) serve as adjusting quantities, and that part register error and web tension force each lie in the same or in different web portions, characterized in that with the help of control strategies the part cut register error and web tension forces are preset decoupled from one another through appropriate set values.
- The method according to Claim 1, characterized in that as adjusting quantity the circumferential speed of the unwinding device which determines the stationary and instationary mass flow introduced into the system is used.
- The method according to Claim 1 or 2, characterized in that the circumferential speed is influenced by means of at least one measurement value for a web pulling force, web tension or web stretch, in particular through the position of a dancing or tension roller acting on the web with the force F01, or by means of a web pulling force control circuit controlling the force F01.
- The method according to any one of the Claims 1 to 3, characterized in that at least a part cut register error and the overall cut register error are captured through sensors (1; 2; 3) which evaluate a certain image information or measurement marks of the printed web, and the web pulling forces by means of further sensors (4) and controlled through control circuits.
- The method according to any one of the Claims 1 to 4, characterized in that a part cut register error to be controlled and a web pulling force to be controlled lie in different web portions, in that the speed (vk ) of a non-printing clamping point k (Kk ) is the control quantity for the part cut register error (Y*1k) and one of the speeds (vi , v i-1, Vi-2, Vi-3 ... to ... v1 ) is the control quantity for the web pulling force (Fi-1,i ) in a web portion located in front of this, wherein the web pulling forces (Fi-1,i, Fi-2,i-1, Fi-3,i-2, ... to ... F12 ) may not be self-compensating as control quantity when using one of the speeds (v i-1, vi-2, vi-3, ... to ... v 1) located at the input of the web portion concerned.
- The method according to any one of the Claims 1 to 5, characterized in that a part cut register error to be controlled and a web pulling force to be controlled lie in different web portions, wherein the adjusting quantity for the part cut register error (Y*1k ) is the speed (vk ) of a non-printing clamping point (Kk ) and the adjusting quantity for the web pulling force (Fk+1,k+2, Fk+2,k+3 to Fn-2,n-1 ) in a web portion located behind this, is the speed (vk+1, v k+2 to vn-1 ).
- The method according to Claim 5, characterized in that in that a part cut register error to be controlled and a web pulling force to be controlled lie in the same web portion and in that the adjusting quantity for the part cut register error (Y*1k ) is the speed (vk ) of a non-printing clamping point k (Kk ) and one of the speeds (v k-1, vk-2, vk-3, ... to ... v1 ) is the adjusting quantity for the web pulling force (Fx-1,k ) in a web portion located before this, wherein the web pulling forces (Fk-1,k, Fk-2,k-1, Fk-3,k-2, ... to ... F12) when using one of the speeds (vk-1, vk-2, vk-3, ... to ... v2 ) may not be self-compensating as control quantity.
- The method according to any one of the Claims 1 to 7, characterized in that for controlling a web pulling force (Fi-1,i ) on changing this web pulling force according to a new set value (Fi-1,i,w ), at least one or following web pulling forces (Fi,i+1 , Fi,i+2 , etc.) are also changed through this.
- The method according to any one of the Claims 1 to 7, characterized in that for controlling a web pulling force (Fi-1,i ) on changing this web pulling force according to a new set value (Fi-1,i,w ), only this web pulling force (Fi-1,i ) is changed.
- The method according to any one of the Claims 1 to 9, characterized in that the overall cut register error is directly measured before the knife cylinder and controlled through a register controller, which is superimposed the register controller for the part register error (Y*1x ) on or before a clamping point k (Kk ).
- A device for controlling the cut register, in particular according to Claim 1 to 10, characterized in that on a rotary printing press, whose clamping points (K1 to Kn ) can be driven with drive motors with signed current, rotational speed and if applicable angular control independently of one another and in which the overall cut register error (Y1n ) on or before a knife cylinder (Kn ) and/or part cut register errors (Y*12, Y*13, Y*1i, Y*1k, Y*1,n-1 ) connected with this can be captured on or before one or a plurality of clamping points (K1, Ki, Kk to Kn-1 ) arranged before this knife cylinder (Kn ) via a certain image information or measurement marks of the printed web by means of at least one sensor (1; 2; 3), the web pulling force (F) can be captured by means of at least one further sensor (4) and these register deviations (Y*12, Y*13, Y*1i, Y*1k, Y*1,n-1 ) and web pulling forces (Fjk ) captured by the sensors (1; 2; 3; 4) for influencing the cut register error (Y1n ) of a regulating and/or control device for changing angular positions or circumferential speeds (v1 to v3, vi, vk, vn ) can be fed to the respective clamping points (K1 to K3, K4, Ki, Kk, Kn), wherein a web pulling force (Fi-1,i ) in a web portion (Fi-1,i ) and a part register error (Y*1k) in another or the same web portion can be adjusted independently of one another through suitable set values (Fi-1,i,w, Y*1k,w ), for the purpose of which a man-machine interface, in particular a control panel with corresponding visualisation device is provided.
- The device according to Claim 11, characterized in that an unwinding device (K0 ) is controllable by means of dancing rollers or web pulling control circuits such that with the help of the circumferential speed (v1 ) the clamping point (K1 ) or with the help of the web pulling force (F01 ) the instationary and stationary mass flow introduced into the system can be varied.
- The device according to Claim 11 or 12, characterized in that the sensors (1; 2; 3; 4) and associated evaluating devices and rated speed of the printing press make available the information regarding the register error or register errors (Y14 , Y*13 , Y*1i , Y*ik ) and the web pulling force (Fk-1,k and Fi-1,i respectively) in a minimal time and are embodied with interfaces which transmit the register errors (Y14, Y*13, Y*1i , Y*ik ) and web pulling forces (Fk-1,k and Fi-1,i respectively) via field buses, Ethernet or other communication buses and communication interfaces.
- The device according to any one of the Claims 11 to 13, characterized in that the regulating and/or control device is realised as a central computer, preferentially in the control panel, or as embedded computer, preferentially in a control or regulator cabinet, or functionally decentralised in the respective converter devices and all information (actual values, set values, control algorithms) can be processed in real time.
Applications Claiming Priority (2)
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DE10335885A DE10335885A1 (en) | 2003-08-06 | 2003-08-06 | Method and device for regulating the web tension and the cutting register error of a web-fed rotary printing press |
DE10335885 | 2003-08-06 |
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EP1505025A2 EP1505025A2 (en) | 2005-02-09 |
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-
2003
- 2003-08-06 DE DE10335885A patent/DE10335885A1/en not_active Withdrawn
-
2004
- 2004-08-04 EP EP04018429.3A patent/EP1505025B1/en not_active Expired - Lifetime
- 2004-08-06 CN CNB2004101032684A patent/CN100436125C/en not_active Expired - Fee Related
- 2004-08-06 US US10/912,810 patent/US7185587B2/en active Active
-
2006
- 2006-07-05 US US11/481,378 patent/US7204189B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US7204189B2 (en) | 2007-04-17 |
CN100436125C (en) | 2008-11-26 |
EP1505025A2 (en) | 2005-02-09 |
DE10335885A1 (en) | 2005-03-17 |
EP1505025A3 (en) | 2010-01-20 |
US20050039622A1 (en) | 2005-02-24 |
CN1640662A (en) | 2005-07-20 |
US20060249043A1 (en) | 2006-11-09 |
US7185587B2 (en) | 2007-03-06 |
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