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EP1650028A2 - Method for adjusting the cutting register of a rotary printing press - Google Patents

Method for adjusting the cutting register of a rotary printing press Download PDF

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Publication number
EP1650028A2
EP1650028A2 EP05022841A EP05022841A EP1650028A2 EP 1650028 A2 EP1650028 A2 EP 1650028A2 EP 05022841 A EP05022841 A EP 05022841A EP 05022841 A EP05022841 A EP 05022841A EP 1650028 A2 EP1650028 A2 EP 1650028A2
Authority
EP
European Patent Office
Prior art keywords
web
printing
unit
strand
cutting
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.)
Withdrawn
Application number
EP05022841A
Other languages
German (de)
French (fr)
Other versions
EP1650028A3 (en
Inventor
Klaus Theilacker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
Manroland AG
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manroland AG, MAN Roland Druckmaschinen AG filed Critical Manroland AG
Publication of EP1650028A2 publication Critical patent/EP1650028A2/en
Publication of EP1650028A3 publication Critical patent/EP1650028A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56—Folding or cutting
    • B41F13/60—Folding or cutting crosswise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5151—Cutting handled material transversally to feeding direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a method for cutting register control in a web-fed rotary printing press.
  • DE 102 45 962 A1 describes a method for cutting register control in a web-fed rotary printing press in which a printing material is guided via traction units each with adjustable overfeed to a cross-cutting device after leaving the last printing unit, wherein one of the traction units is changed with respect to their peripheral speed to adjust the cut register ,
  • This procedure has the advantage of a shorter setting time compared to the cut register setting by means of a deflecting roller which can be displaced or pivoted transversely to the transport direction of the printing material web.
  • the object of the present invention is to further develop this known method in terms of a further improvement of the control loop dynamics as well as simplification.
  • the traction unit used for the cutting register setting is already in the printing unit, i. that the printing units themselves are already adjusted to move the print image to achieve the desired cutting position. With the adjustment of the cutting register error is thus set where it begins to emerge, whereby the use of guide rollers for cutting register adjustment can be kept to a minimum.
  • the principle of the invention is no longer applicable. Rather, it must be taken into account in such a train unit that it has to have to maintain the web tension in each individual entering the strand web or partial web at any time a lead over that or train at the highest speed. Therefore, the peripheral speed of such a train unit must correspond to that of the train units of the currently highest speed train plus an overfeed.
  • FIG. 1 shows a schematic partial side view of a printing press.
  • a printing substrate 2 is printed in a printing unit 1, which enters into the downstream units of a printing press together with other, not shown in the figure printing units webs 12 and 22.
  • the web 2 like the webs 12 and 22 coming from the other printing units, is first cut longitudinally into two part webs 3A and 3B.
  • a partial web 3B is turned in a turning unit 4, before the two partial webs 3A and 3B with those from the other webs 12th and 22 cut partial webs are brought together into a strand 5 and this is folded at a funnel 6.
  • the funnel 6 By folding the funnel 6, the strand 5 is rotated by 90 ° and then runs to a knife cylinder 7, where it is cross-cut into individual sections.
  • the position of the cut must be matched to the position of the printed image in order to maintain a constant, predetermined distance of the printed image from the cut edges in the longitudinal direction.
  • an optical sensor 8 is arranged, which detects the position of a cutting register mark on the partial web 3A, 3B and outputs a respective measurement signal M.
  • the knife cylinder 7 may be equipped with an incremental encoder which supplies a clock signal having a predetermined number of pulses and a reference pulse per revolution of the knife cylinder.
  • the number of such pulses generated since that time since the last reference pulse can be used as a measure of the position of the cut register mark.
  • Such a measured position of a cutting register mark provides a measure of the actual value of the cutting position, i. for the expected distance of the cut from the mark and can be used to control the Thomasre-gister the respective substrate web.
  • all further train units conveying the web 2 are adjusted simultaneously in their circumferential speed.
  • this concerns the traction unit 11 arranged in front of the longitudinal cutting device, with the result that the cutting register adjustment propagates up to there in the web 2 approximately at the speed of sound of the printing stock which, in the case of paper of the order of 3000 m / s, that is far above the transport speed of the web 2. It is understood that this principle can be applied to any number of further subsequent train units, provided that these train units all alone promote the web 2.
  • the cut register setting of a turned partial web 3B may require an additional adjusting element in the form of a displaceable roller, since an additional error contribution may arise on the additional path in the turning unit 4, which must, if necessary, be compensated separately from the regulation of the straight running partial web 3A.
  • a traction unit that no longer promotes a web 2 or part web 3A, 3B cut from it alone, such as the recognizable in Fig. 1 tractor unit 6A, which promotes the strand 5 after its merger to the hopper 6 back
  • the principle of the invention is no longer applicable because there is no unique assignment of the tractor unit 6A to a single lane 1, 12, or 22.
  • Such a train unit 6A acting on an entire strand 5 must be considered to be capable of maintaining the web tension in each one in the strand 5 incoming web or partial web at any time must have a lead over that or train at the current highest speed.
  • the straight-ahead partial web 3A cut from the web 2 is accelerated by synchronous speed increase of the printing units 1 A to 1 D and the tractor unit 11 for correction of the cutting register error so that it is currently within the line 5 the web with the highest speed , then the speed of the tractor unit 6A must be increased so that it has an advance required to maintain the intended tension in the sub-railway 3A in relation to the last preceding tractor unit acting on the sub-railway 3A.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)

Abstract

The method involves setting the cutting position of a print substrate web (2) by adjusting the circumferential speed of a pull unit such as a printing unit which conveys the web. The circumferential speed on all the pull units which are downstream of the pull unit in the running direction of the web that conveys only the web or a portion of the web, are adjusted simultaneously.

Description

Die Erfindung betrifft ein Verfahren zur Schnittregisterregelung bei einer Rollenrotationsdruckmaschine.The invention relates to a method for cutting register control in a web-fed rotary printing press.

Die DE 102 45 962 A1 beschreibt ein Verfahren zur Schnittregisterregelung bei einer Rollenrotationsdruckmaschine, in der eine Bedruckstoffbahn nach dem Verlassen des letzten Druckwerks über Zugeinheiten mit jeweils einstellbarer Voreilung zu einer Querschneideeinrichtung geführt wird, wobei zur Verstellung des Schnittregisters eine der Zugeinheiten hinsichtlich Ihrer Umfangsgeschwindigkeit verändert wird. Diese Vorgehensweise hat gegenüber der Schnittregistereinstellung mittels einer quer zur Transportrichtung der Bedruckstoffbahn verschiebbaren oder schwenkbaren Umlenkwalze den Vorteil einer kürzeren Einstellzeit.DE 102 45 962 A1 describes a method for cutting register control in a web-fed rotary printing press in which a printing material is guided via traction units each with adjustable overfeed to a cross-cutting device after leaving the last printing unit, wherein one of the traction units is changed with respect to their peripheral speed to adjust the cut register , This procedure has the advantage of a shorter setting time compared to the cut register setting by means of a deflecting roller which can be displaced or pivoted transversely to the transport direction of the printing material web.

Die Aufgabe der vorliegenden Erfindung besteht darin, dieses bekannte Verfahren in Sinne einer weiteren Verbesserung der Regelkreisdynamik sowie Vereinfachung fortzuentwickeln.The object of the present invention is to further develop this known method in terms of a further improvement of the control loop dynamics as well as simplification.

Erfindungsgemäß wird diese Aufgabe durch ein Verfahren mit den Merkmalen des Anspruchs 1 gelöst. Besonders vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.According to the invention this object is achieved by a method having the features of claim 1. Particularly advantageous developments are the subject of the dependent claims.

Indem bei allen Zugeinheiten, die einer zur Schnittregistereinstellung verwendeten Zugeinheit in Laufrichtung der Bedruckstoffbahn nachfolgen, gleichzeitig dieselbe Änderung der Umfangsgeschwindigkeit vorgenommen wird, breitet sich die Verstellung des Schnittregisters in Laufrichtung der Bedruckstoffbahn nicht mit der Transportgeschwindigkeit der Bahn, sondern annähernd mit der innerhalb des Bedruckstoffs gegebenen Schallgeschwindigkeit aus, die um ungefähr zwei Größenordnungen höher liegt als die übliche Transportgeschwindigkeit einer Bedruckstoffbahn in einer Druckmaschine. Es ist offensichtlich, dass dies eine erhebliche Verbesserung der Regelkreisdynamik bedeutet.By at the same time the same change in the peripheral speed is performed in all the units that follow a traction unit used for cutting register adjustment in the direction of the printing material, the adjustment of the cut register in the direction of the printing material spreads not with the transport speed of the web, but approximately with the given within the substrate Speed of sound, which is about two orders of magnitude higher than the usual transport speed of a printing material web in a printing press. It is obvious that this means a considerable improvement of the control loop dynamics.

Besonders vorteilhaft ist es, wenn die zur Schnittregistereinstellung verwendete Zugeinheit bereits in der Druckeinheit liegt, d.h. dass bereits die Druckwerke selbst verstellt werden, um das Druckbild zur Erreichung der gewünschten Schnittposition zu verschieben. Mit der Ausregelung des Schnittregisterfehlers wird also dort angesetzt, wo er zu entstehen beginnt, womit der Einsatz von Umlenkwalzen zur Schnittregistereinstellung auf ein Minimum beschränkt werden kann.It is particularly advantageous if the traction unit used for the cutting register setting is already in the printing unit, i. that the printing units themselves are already adjusted to move the print image to achieve the desired cutting position. With the adjustment of the cutting register error is thus set where it begins to emerge, whereby the use of guide rollers for cutting register adjustment can be kept to a minimum.

Auf eine Zugeinheit, die nicht mehr eine Bahn oder daraus geschnittene Teilbahn allein fördert, sondern einen bereits zusammengeführten Strang von Bahnen, ist das erfindungsgemäße Prinzip nicht mehr anwendbar. Vielmehr muss bei einer solchen Zugeinheit berücksichtigt werden, dass sie zur Aufrechterhaltung der Bahnspannung in jeder einzelnen in den Strang einlaufenden Bahn bzw. Teilbahn zu jedem Zeitpunkt eine Voreilung gegenüber derjenigen Bahn bzw. Teilbahn mit der höchsten Geschwindigkeit aufweisen muss. Daher muss die Umfangsgeschwindigkeit einer solchen Zugeinheit derjenigen der Zugeinheiten der Bahn mit der momentan höchsten Geschwindigkeit zuzüglich einer Voreilung entsprechen.On a traction unit that no longer promotes a train or sub-web cut from it alone, but an already merged strand of webs, the principle of the invention is no longer applicable. Rather, it must be taken into account in such a train unit that it has to have to maintain the web tension in each individual entering the strand web or partial web at any time a lead over that or train at the highest speed. Therefore, the peripheral speed of such a train unit must correspond to that of the train units of the currently highest speed train plus an overfeed.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung beschrieben. In diesen zeigt die einzige Fig. 1 eine schematische Teilseitenansicht einer Druckmaschine.Hereinafter, an embodiment of the invention will be described with reference to the drawings. In these, the only Fig. 1 shows a schematic partial side view of a printing press.

Gemäß Fig. 1 wird in einer Druckeinheit 1 eine Bedruckstoffbahn 2 bedruckt, die zusammen mit von weiteren, in der Figur nicht gezeigten Druckeinheiten kommenden Bahnen 12 und 22 in die nachgeordneten Einheiten einer Druckmaschine einläuft.1, a printing substrate 2 is printed in a printing unit 1, which enters into the downstream units of a printing press together with other, not shown in the figure printing units webs 12 and 22.

Die Bahn 2 wird ebenso wie die von den anderen Druckeinheiten kommenden Bahnen 12 und 22 zunächst in zwei Teilbahnen 3A und 3B längsgeschnitten. Von den Teilbahnen 3A und 3B wird in einer Wendeeinheit 4 eine Teilbahn 3B gewendet, bevor die beiden Teilbahnen 3A und 3B mit den aus den anderen Bahnen 12 und 22 geschnittenen Teilbahnen zu einem Strang 5 zusammengeführt werden und dieser an einem Trichter 6 gefalzt wird. Durch die Falzung am Trichter 6 wird der Strang 5 um 90° gedreht und läuft dann zu einem Messerzylinder 7, wo er in einzelne Abschnitte quergeschnitten wird. Dabei muss die Position des Schnittes auf die Lage des Druckbildes abgestimmt sein, um in Längsrichtung einen gleichbleibenden, vorbestimmten Abstand des Druckbildes von den Schnittkanten einzuhalten.The web 2, like the webs 12 and 22 coming from the other printing units, is first cut longitudinally into two part webs 3A and 3B. Of the partial webs 3A and 3B, a partial web 3B is turned in a turning unit 4, before the two partial webs 3A and 3B with those from the other webs 12th and 22 cut partial webs are brought together into a strand 5 and this is folded at a funnel 6. By folding the funnel 6, the strand 5 is rotated by 90 ° and then runs to a knife cylinder 7, where it is cross-cut into individual sections. The position of the cut must be matched to the position of the printed image in order to maintain a constant, predetermined distance of the printed image from the cut edges in the longitudinal direction.

Um das Schnittregister, d.h. die Schnittlage in Bezug auf das Druckbild einzustellen wird die Drehzahl der Druckzylinder der Druckeinheit 1 und damit deren Umfangsgeschwindigkeit kurzzeitig verstellt, um bei gleichbleibender Weglänge von der Druckeinheit 1 zum Messerzylinder 7 das Druckbild gegenüber der Schnittlage zu verschieben. Dies hat den Vorteil, dass zusätzliche Schnittregister-Stellelemente in Form verschiebbarer Walzen nicht für alle Teilbahnen, sondern allenfalls für die in der Wendeeinheit 4 gewendeten Teilbahnen, wie z. B. die Teilbahn 3B, benötigt werden.To change the cut register, i. To adjust the cutting position with respect to the print image, the rotational speed of the printing cylinder of the printing unit 1 and thus the peripheral speed is temporarily adjusted to move the printed image with respect to the cutting position at the same path length of the printing unit 1 to the knife cylinder 7. This has the advantage that additional cutting register adjusting elements in the form of sliding rollers not for all partial webs, but at most for the turning in the turning unit 4 partial webs, such. B. the partial web 3B, are needed.

Zur Regelung des Schnittregisters ist vor dem Einlauf in die Falzeinheit, d.h. vor der Zusammenführung der Teilbahnen zu einem Strang 5 pro Teilbahn 3A, 3B ein optischer Sensor 8 angeordnet, der die Position einer Schnittregistermarke auf der Teilbahn 3A, 3B erfasst und ein jeweiliges Messsignal M abgibt. Beispielsweise kann der Messerzylinder 7 mit einem Inkrementalgeber ausgerüstet sein, der ein Taktsignal mit einer vorbestimmten Anzahl von Impulsen sowie einem Referenzimpuls pro Umdrehung des Messerzylinders liefert. In diesem Fall kann beim Auftreten der Schnittregistermarke am Sensor 8 die bis dahin erzeugte Anzahl solcher Impulse seit dem letzten Referenzimpuls als Maß für die Position der Schnittregistermarke verwendet werden. Eine so gemessene Position einer Schnittregistermarke stellt ein Maß für den Istwert der Schnittlage, d.h. für den zu erwartenden Abstand des Schnittes von der Marke dar und kann zur Regelung des Schnittre-gisters der jeweiligen Bedruckstoffbahn verwendet werden.To control the cut register, before entering the folding unit, i. before the merging of the partial webs to a strand 5 per partial web 3A, 3B, an optical sensor 8 is arranged, which detects the position of a cutting register mark on the partial web 3A, 3B and outputs a respective measurement signal M. For example, the knife cylinder 7 may be equipped with an incremental encoder which supplies a clock signal having a predetermined number of pulses and a reference pulse per revolution of the knife cylinder. In this case, when the cut register mark appears on the sensor 8, the number of such pulses generated since that time since the last reference pulse can be used as a measure of the position of the cut register mark. Such a measured position of a cutting register mark provides a measure of the actual value of the cutting position, i. for the expected distance of the cut from the mark and can be used to control the Schnittre-gister the respective substrate web.

Es versteht sich, dass eine Verstellung der Drehzahl der Druckzylinder in der Druckeinheit 1 zur Verstellung des Schnittregisters bei allen vier Druckwerken 1 A, 1 B, 1C und 1 D der Druckeinheit 1 synchron vorgenommen werden muss, um die korrekte Einstellung des Farbregisters aufrechtzuerhalten.It is understood that an adjustment of the rotational speed of the printing cylinder in the printing unit 1 for adjusting the cut register at all four printing units 1 A, 1 B, 1C and 1 D of the printing unit 1 must be made synchronously in order to maintain the correct setting of the color register.

Wenn zur Schnittregistereinstellung aber nur die Druckeinheit 1 benutzt würden, dann würde sich die Wirkung einer Verstellung am Endprodukt um ein Zeitintervall verzögern, das ungefähr dem Verhältnis aus der gesamten Weglänge der Bahn 2 von der Druckeinheit 1 bis zum Messerzylinder 7 und der Transportgeschwindigkeit der Bahn 2 in der Druckmaschine entspräche.However, if only the printing unit 1 were used for the cut register setting, the effect of an adjustment on the end product would be delayed by a time interval which is approximately the ratio of the total path length of the web 2 from the printing unit 1 to the knife cylinder 7 and the transport speed of the web 2 in the printing press would correspond.

Um diese Verzögerung zu verringern, werden erfindungsgemäß alle weiteren allein die Bahn 2 fördernden Zugeinheiten gleichzeitig entsprechend in ihrer Umfangsgeschwindigkeit verstellt. Bei dem in Fig. 1 gezeigten Beispiel betrifft dies die vor der Längsschneidevorrichtung angeordnete Zugeinheit 11, was zur Folge hat, dass sich die Schnittregisterverstellung bis dorthin in der Bahn 2 annähernd mit der Schallgeschwindigkeit des Bedruckstoffes ausbreitet, die bei Papier in der Größenordnung von 3000 m/s, also weit über der Transportgeschwindigkeit der Bahn 2 liegt. Es versteht sich, dass dieses Prinzip auf eine beliebige Anzahl von weiteren nachfolgenden Zugeinheiten angewendet werden kann, sofern diese Zugeinheiten alle allein die Bahn 2 fördern.In order to reduce this delay, according to the invention all further train units conveying the web 2 are adjusted simultaneously in their circumferential speed. In the example shown in FIG. 1, this concerns the traction unit 11 arranged in front of the longitudinal cutting device, with the result that the cutting register adjustment propagates up to there in the web 2 approximately at the speed of sound of the printing stock which, in the case of paper of the order of 3000 m / s, that is far above the transport speed of the web 2. It is understood that this principle can be applied to any number of further subsequent train units, provided that these train units all alone promote the web 2.

Die Schnittregistereinstellung einer gewendeten Teilbahn 3B kann ein zusätzliches Einstellelement in Form einer verschiebbaren Walze erfordern, da auf dem zusätzlichen Weg in der Wendeeinheit 4 ein zusätzlicher Fehlerbeitrag entstehen kann, der nötigenfalls separat von der Regelung der geradeaus laufenden Teilbahn 3A ausgeregelt werden muss.The cut register setting of a turned partial web 3B may require an additional adjusting element in the form of a displaceable roller, since an additional error contribution may arise on the additional path in the turning unit 4, which must, if necessary, be compensated separately from the regulation of the straight running partial web 3A.

Auf eine Zugeinheit, die nicht mehr eine Bahn 2 oder daraus geschnittene Teilbahn 3A, 3B allein fördert, wie beispielsweise die in Fig. 1 erkennbare Zugeinheit 6A, welche den Strang 5 nach seiner Zusammenführung zum Trichter 6 hin fördert, ist das erfindungsgemäße Prinzip nicht mehr anwendbar, da keine eindeutige Zuordnung der Zugeinheit 6A zu einer einzelnen Bahn 1, 12, oder 22 besteht. Bei einer solchen auf einen ganzen Strang 5 wirkenden Zugeinheit 6A muss berücksichtigt werden, dass sie zur Aufrechterhaltung der Bahnspannung in jeder einzelnen in den Strang 5 einlaufenden Bahn bzw. Teilbahn zu jedem Zeitpunkt eine Voreilung gegenüber derjenigen Bahn bzw. Teilbahn mit der momentan höchsten Geschwindigkeit aufweisen muss.On a traction unit that no longer promotes a web 2 or part web 3A, 3B cut from it alone, such as the recognizable in Fig. 1 tractor unit 6A, which promotes the strand 5 after its merger to the hopper 6 back, the principle of the invention is no longer applicable because there is no unique assignment of the tractor unit 6A to a single lane 1, 12, or 22. Such a train unit 6A acting on an entire strand 5 must be considered to be capable of maintaining the web tension in each one in the strand 5 incoming web or partial web at any time must have a lead over that or train at the current highest speed.

Wird beispielsweise zu einem bestimmten Zeitpunkt gerade die aus der Bahn 2 geschnittene Geradeausteilbahn 3A durch synchrone Geschwindigkeitserhöhung der Druckwerke 1 A bis 1 D sowie der Zugeinheit 11 zur Korrektur des Schnittregisterfehlers so beschleunigt, dass sie momentan innerhalb des Stranges 5 diejenige Bahn mit der höchsten Geschwindigkeit ist, dann muss die Geschwindigkeit der Zugeinheit 6A so erhöht werden, dass sie gegenüber der letzten vorausgehenden Zugeinheit, die auf die Teilbahn 3A einwirkt, die zur Aufrechterhaltung der beabsichtigten Spannung in der Teilbahn 3A nötige Voreilung hat. Erfährt die Teilbahn 3A später eine Verzögerung durch die Druckwerke 1 A bis 1 D sowie die Zugeinheit 11, um den Schnittregisterfehler in der anderen Richtung zu korrigieren, so dass eine andere in den Strang 5 einlaufende Bahn momentan schneller läuft, dann muss die Geschwindigkeit der Zugeinheit 6A an die momentan schnellste der anderen Bahnen angepasst werden.If, for example, at a particular point in time, the straight-ahead partial web 3A cut from the web 2 is accelerated by synchronous speed increase of the printing units 1 A to 1 D and the tractor unit 11 for correction of the cutting register error so that it is currently within the line 5 the web with the highest speed , then the speed of the tractor unit 6A must be increased so that it has an advance required to maintain the intended tension in the sub-railway 3A in relation to the last preceding tractor unit acting on the sub-railway 3A. Later learns the sub-web 3A delayed by the printing units 1 A to 1 D and the tractor unit 11 to correct the cut register error in the other direction, so that another running in the strand 5 lane currently runs faster, then the speed of the tractor unit 6A be adapted to the currently fastest of the other tracks.

Obgleich es als äußerst zweckmäßig erscheint, mit der erfindungsgemäßen synchronen Geschwindigkeitsverstellung aufeinanderfolgender Zugeinheiten bereits in der Druckeinheit zu beginnen, ist im Grundsatz auch eine Anwendung erst nach der Druckeinheit denkbar und vom Schutz der Patentansprüche umfasst.Although it seems to be extremely useful to start with the synchronous speed adjustment of successive train units according to the invention already in the printing unit, in principle also an application after the printing unit is conceivable and encompassed by the protection of the patent claims.

Claims (3)

Verfahren zur Schnittregisterregelung bei einer Rollenrotationsdruckmaschine, in der die Schnittposition mindestens einer Bedruckstoffbahn durch Verstellung der Umfangsgeschwindigkeit mindestens einer die Bedruckstoffbahn fördernden Zugeinheit eingestellt wird, dadurch gekennzeichnet, dass die an der Zugeinheit (1A) vorgenommene Geschwindigkeitsänderung gleichzeitig auch an allen bezüglich der Laufrichtung der Bedruckstoffbahn (2) nachfolgenden und allein diese Bedruckstoffbahn (2) oder allein einen Teil derselben fördernden Zugeinheiten (1 B, 1C, 1 D, 11 ) vorgenommen wird.Method for cutting register control in a web-fed rotary printing press in which the cutting position of at least one printing material web is set by adjusting the peripheral speed of at least one drawing unit conveying the traction unit, characterized in that the speed change made on the traction unit (1A) simultaneously also at all with respect to the running direction of the printing substrate ( 2) following and alone this printing material web (2) or alone a part of the same promotional train units (1 B, 1C, 1 D, 11) is made. Verfahren zur Schnittregisterregelung nach Anspruch 1, dadurch gekennzeichnet, dass die erste Zugeinheit (1A), deren Umfangsgeschwindigkeit verstellt wird, das erste Druckwerk (1A) der die Bedruckstoffbahn (2) bedruckenden Druckeinheit (1) ist.A method for cutting register control according to claim 1, characterized in that the first traction unit (1A) whose peripheral speed is adjusted, the first printing unit (1A) of the printing substrate (2) printing unit (1). Verfahren zur Schnittregisterregelung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass im Fall einer Zusammenführung mehrerer Bedruckstoffbahnen (2, 12, 22) bzw. daraus längsgeschnittener Teilbahnen (3A, 3B) zu einem Strang (5) die Umfangsgeschwindigkeit einer Zugeinheit (6A), die einen Strang (5) nach der Zusammenführung fördert, entsprechend den vorausgehenden Zugeinheiten derjenigen in den Strang (5) laufenden Bahn mit der momentan größten Geschwindigkeit aller in den Strang (5) laufenden Bahnen eingestellt wird.Method for cutting register control according to claim 1 or 2, characterized in that in the case of merging a plurality of printing substrate webs (2, 12, 22) or part webs (3A, 3B) cut therefrom into a strand (5), the peripheral speed of a tractor unit (6A), which promotes a strand (5) after the merger, according to the preceding train units of those in the strand (5) running web is set at the momentary maximum speed of all running in the strand (5) tracks.
EP05022841A 2004-10-23 2005-10-20 Method for adjusting the cutting register of a rotary printing press Withdrawn EP1650028A3 (en)

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US7481163B2 (en) 2009-01-27
EP1650028A3 (en) 2009-02-25
US20060102026A1 (en) 2006-05-18
DE102004051634A1 (en) 2006-05-18

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