EP0459098B1 - Printing machine, in particular flexographic printing machine - Google Patents
Printing machine, in particular flexographic printing machine Download PDFInfo
- Publication number
- EP0459098B1 EP0459098B1 EP91103979A EP91103979A EP0459098B1 EP 0459098 B1 EP0459098 B1 EP 0459098B1 EP 91103979 A EP91103979 A EP 91103979A EP 91103979 A EP91103979 A EP 91103979A EP 0459098 B1 EP0459098 B1 EP 0459098B1
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- Prior art keywords
- speed
- printing machine
- cylinder
- format
- web
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- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 description 11
- 239000011295 pitch Substances 0.000 description 8
- 238000011143 downstream manufacturing Methods 0.000 description 5
- 210000001520 comb Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Classifications
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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
- B41F13/008—Mechanical features of drives, e.g. gears, clutches
- B41F13/012—Taking-up backlash
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F5/00—Rotary letterpress machines
- B41F5/24—Rotary letterpress machines for flexographic printing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S101/00—Printing
- Y10S101/36—Means for registering or alignment of print plates on print press structure
Definitions
- the invention relates to a printing press according to the preamble of patent claim 1.
- a printing machine of this type known from FR-A-2550995
- the plate cylinders are driven by a differential gear, the input shaft of which is driven via a pinion by a central wheel wedged on a shaft of the counter-pressure cylinder, the output of the differential gear driving a second central wheel via a pinion, that combs with all the pinions of the cliché cylinders.
- a differential speed which corresponds to the difference in the pressure lengths, is fed into the differential gear via a control device and a servo motor.
- This known printing machine is used for the repeated registration-correct printing of an already printed web.
- This known printing machine enables a register-correct second printing of an already printed web made of inelastic material in that, in accordance with the deviation of the printing lengths of the new printing from the already printed printing lengths of the printing plate cylinders, the printing cylinder is driven at greater or lower speed to the impression cylinder which effects the transport of the web to be printed , so that the new print lengths are compressed or steered according to the print lengths of the pre-printed web, with a certain slight smearing of the print being accepted.
- the measure of the set relative speed of the plate cylinder relative to the impression cylinder is determined by comparing the signals of the photoelectric sensor which detects marks printed on the web with signals generated by a pin arranged on the plate cylinder.
- the central wheel is firmly connected to the shaft of the impression cylinder, so that only with format cylinders can be printed, the circumferential lengths or diameters of which are matched to the impression cylinder in such a way that they occur in steps which correspond to a single or a multiple of the tooth pitch. Because only if the format cylinder diameter used corresponds exactly to the tooth pitches and if the format cylinder gearwheels and the central wheel are matched to the diameter of the format cylinder and the impression cylinder, the format cylinder and the impression cylinder rotate at the same circumferential speed, so that there is no relative speed between them and no slipping or The web to be printed is smeared.
- the object of the invention is to provide a printing machine of the generic type, with which it is also possible to print with format cylinders whose format lengths or diameters do not fit exactly into the tooth pitch pattern, that is to say have diameters which do not correspond to an integral multiple of the tooth pitch of the central wheel.
- the format cylinders are thus firmly coupled to the impression cylinder canceled by the format cylinder gears, which mesh with the central wheel fixedly connected to the impression cylinder. Rather, the central wheel is only used to drive all format cylinders in phase with the same peripheral speed, the impression cylinder being decoupled from the central wheel and provided with a special drive that drives it regardless of the tooth pitch at a speed that is the path speed or the peripheral speed of the Format cylinder corresponds.
- a form roller which can be adjusted to a printing cylinder can thereby be adapted to the peripheral speed of the printing cylinder without the occurrence between the two relative movements, the peripheral speeds being measured and the peripheral speeds of the two rollers being matched to one another in accordance with the differential speed by means of a speed control device such that no relative speed occurs between the two.
- This known speed control device on a printing press makes it possible, for example, to avoid relative speeds which can occur as a result of thermal expansion of the cylinders.
- the central wheel is in a drive connection by a gear with a gear fixed to the shaft journal of the counter-pressure cylinder that includes a differential gear, in which a stepper motor or the like through a continuously controllable gear.
- an additional speed equalizing the peripheral speed of the impression cylinder to the peripheral speed of the format cylinders can be fed.
- the impression cylinder also receives its basic drive from the main drive of the printing press, only via the Differential gear a positive or negative additional speed is fed in order to adapt the peripheral speed of the impression cylinder to the speed of the web to be printed.
- the speed of the printed web is measured and corresponding speed-proportional signals are generated, which then generate the necessary control signals in a control device.
- print marks can be detected by sensors or subsequent processing cycles carried out on the web in the same section lengths can be counted. If, for example, the printed web is separated into sections in a downstream processing station according to the format lengths, the work cycles can be counted per unit of time and converted into signals proportional to the speed.
- the printing press contains feed rollers and / or these are connected to further processing devices, these are also driven according to the measured web speed via controllable drives.
- the flexographic printing machine is basically of a known type and is therefore not described in more detail here (see e.g. DE-OS 34 37 216).
- the web 10 to be printed runs in the manner shown over guide and feed rollers and through a schematically illustrated downstream processing station 11, in which the printed web is stamped, for example, in accordance with the printing format lengths.
- FIG 2 the impression cylinder 1 and a format roller 3 is shown schematically.
- the central wheel 13 is freely rotatably mounted on the shaft journal 12 of the impression cylinder 1, while the drive gear 14 for the impression cylinder 1 is firmly wedged onto the shaft journal of the impression cylinder 1.
- All format cylinder gearwheels 3 ', 6' mesh with the freely rotatable central wheel 13.
- the central wheel 13 and the format cylinder gearwheels 3 ′, 6 ′ are driven by the main drive of the printing press via a drive pinion 16.
- the counter pressure cylinder gear 14 is driven via the gear 17, which is connected to the output shaft of the differential gear 18.
- the input side of the differential gear 18 is rotatably connected to the format cylinder gear 6 '.
- a continuously variable transmission PV transmission
- a stepper motor a positive or negative speed to adapt the peripheral speed of the impression cylinder 1 to the web 10 to be printed or the peripheral speed of the format cylinders 2 to 7 fed.
- This additional speed is formed by a control device, not shown, based on measurements of the web speed or the peripheral speed of the format cylinder. If the tooth pitch of the format cylinders coincides with that of the central wheel and the impression cylinder drive wheel, in the best case no speed compensation need take place via the differential gear 18.
- the transmission connection of preferred rollers and downstream processing stations is shown schematically in FIG. 2 by angular drives, drive shafts and gear stages.
- the cylinder 20 represents, for example, a roller of a pair of preferred rollers or a processing station, which is driven by the roller gear 21.
- the roller gear 21 meshes with the gear 22 which is keyed onto the output shaft of a differential gear 23.
- the gear 24 is placed, which is driven by the pinion 25, which in the manner shown is connected to the main drive via angular drives and gear stages.
- An additional speed may be fed into the second input of the differential gear 23 in the same manner as in the differential gear 18.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Presses (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
Die Erfindung betrifft eine Druckmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a printing press according to the preamble of patent claim 1.
Bei einer aus FR-A-2550995 bekannten Druckmaschine dieser Art werden die Klischeezylinder von einem Differentialgetriebe angetrieben, dessen Eingangswelle über ein Ritzel von einem auf einer Welle des Gegendruckzylinders aufgekeilten Zentralrad angetrieben wird, wobei der Ausgang des Differentialgetriebes über ein Ritzel ein zweites Zentralrad antreibt, das mit sämtlichen Ritzeln der Klischeezylinder kämmt. In das Differentialgetriebe wird über eine Steuereinrichtung und einen Servomotor eine Differenzgeschwindigkeit eingespeist, die der Differenz der Drucklängen entspricht. Diese bekannte Druckmaschine dient dem nochmaligen registergerechten Bedrucken einer bereits bedruckten Bahn. Diese bekannte Druckmaschine ermöglicht einen registergerechten zweiten Druck einer bereits bedruckten Bahn aus unelastischem Material dadurch, daß entsprechend der Abweichung der Drucklängen des neuen Drucks zu den bereits bedruckten Drucklängen der Klischeezylinder mit größerer oder kleinerer Geschwindigkeit zu dem den Transport der zu bedruckenden Bahn bewirkenden Gegendruckzylinder angetrieben wird, so daß die neuen Drucklängen entsprechend den Drucklängen der vorbedruckten Bahn gestaucht oder gelenkt werden, wobei ein gewisses geringfügiges Verschmieren des Drucks in Kauf genommen wird. Das Maß der eingestellten Relativgeschwindigkeit des Klischeezylinders relativ zu dem Gegendruckzylinder wird dabei durch einen Vergleich der Signale des auf die Bahn aufgedruckte Marken erfassenden photoelektrischen Sensors mit Signalen ermittelt, die ein auf dem Klischeezylinder angeordneter Stift erzeugt.In a printing machine of this type known from FR-A-2550995, the plate cylinders are driven by a differential gear, the input shaft of which is driven via a pinion by a central wheel wedged on a shaft of the counter-pressure cylinder, the output of the differential gear driving a second central wheel via a pinion, that combs with all the pinions of the cliché cylinders. A differential speed, which corresponds to the difference in the pressure lengths, is fed into the differential gear via a control device and a servo motor. This known printing machine is used for the repeated registration-correct printing of an already printed web. This known printing machine enables a register-correct second printing of an already printed web made of inelastic material in that, in accordance with the deviation of the printing lengths of the new printing from the already printed printing lengths of the printing plate cylinders, the printing cylinder is driven at greater or lower speed to the impression cylinder which effects the transport of the web to be printed , so that the new print lengths are compressed or steered according to the print lengths of the pre-printed web, with a certain slight smearing of the print being accepted. The measure of the set relative speed of the plate cylinder relative to the impression cylinder is determined by comparing the signals of the photoelectric sensor which detects marks printed on the web with signals generated by a pin arranged on the plate cylinder.
Bei einer beispielsweise aus DE-A- 34 37 216 bekannten Flexodruckmaschine ist das Zentralrad fest mit der Welle des Gegendruckzylinders verbunden, so daß nur mit Formatzylindern gedruckt werden kann, deren Umfangslängen bzw. Durchmesser derart auf den Gegendruckzylinder abgestimmt sind, daß diese in Sprüngen erfolgen, die dem Einfachen oder einem Mehrfachen der Zahnteilung entsprechen. Denn nur wenn die verwendeten Formatzylinderdurchmesser genau den Zahnteilungen entsprechen und wenn die Formatzylinderzahnräder und das Zentralrad auf den Durchmesser der Formatzylinder und des Gegendruckzylinders abgestimmt sind, drehen sich die Formatzylinder und der Gegendruckzylinder mit gleicher Umfangsgeschwindigkeit, so daß zwischen diesen keine Relativgeschwindigkeit eintritt und kein Rutschen oder Verschmieren der zu bedruckenden Bahn erfolgt. Nun ergibt sich häufig jedoch die Notwendigkeit, mit einer Formatlänge zu drucken, also Formatzylinder mit einem Durchmesser zu verwenden, der nicht genau in das Zahnteilungsmuster paßt. Um derartige Druckaufträge ausführen zu können, mußte daher bisher ein gewisses Rutschen der zu bedruckenden Bahn auf den Gegendruckzylinder und möglicherweise auch ein unsauberes Druckbild in Kauf genommen werden.In a flexographic printing press known for example from DE-A-34 37 216, the central wheel is firmly connected to the shaft of the impression cylinder, so that only with format cylinders can be printed, the circumferential lengths or diameters of which are matched to the impression cylinder in such a way that they occur in steps which correspond to a single or a multiple of the tooth pitch. Because only if the format cylinder diameter used corresponds exactly to the tooth pitches and if the format cylinder gearwheels and the central wheel are matched to the diameter of the format cylinder and the impression cylinder, the format cylinder and the impression cylinder rotate at the same circumferential speed, so that there is no relative speed between them and no slipping or The web to be printed is smeared. Now, however, there is often the need to print with a format length, that is, to use format cylinders with a diameter that does not exactly fit the tooth pitch pattern. In order to be able to carry out such print jobs, a certain amount of slip of the web to be printed on the impression cylinder and possibly also an unclean print image had to be accepted.
Aufgabe der Erfindung ist es, eine Druckmaschine der gattungsgemäßen Art zu schaffen, mit der sich auch mit Formatzylindern drucken läßt, deren Formatlängen bzw. Durchmesser nicht genau in das Zahnteilungsmuster passen, also Durchmesser aufweisen, die nicht einem ganzzahligen Vielfachen der Zahnteilung des Zentralrades entsprechen.The object of the invention is to provide a printing machine of the generic type, with which it is also possible to print with format cylinders whose format lengths or diameters do not fit exactly into the tooth pitch pattern, that is to say have diameters which do not correspond to an integral multiple of the tooth pitch of the central wheel.
Erfindungsgemäß wird diese Aufgabe bei einer Druckmaschine der gattungsgemäßen Art durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.According to the invention, this object is achieved in a printing press of the generic type by the characterizing features of patent claim 1.
Bei der erfindungsgemäßen Druckmaschine ist somit die feste Ankoppelung der Formatzylinder an den Gegendruckzylinder durch die Formatzylinderzahnräder, die mit dem fest mit dem Gegendruckzylinder verbundenen Zentralrad kämmen, aufgehoben. Vielmehr dient das Zentralrad nur noch dazu, sämtliche Formatzylinder phasenrichtig mit derselben Umfangsgeschwindigkeit anzutreiben, wobei der Gegendruckzylinder von dem Zentralrad abgekoppelt und mit einem besonderen Antrieb versehen ist, der diesen unabhängig von der Zahnteilung mit einer Geschwindigkeit antreibt, die der Bahngeschwindigkeit bzw. der Umfangsgeschwindigkeit der Formatzylinder entspricht.In the printing press according to the invention, the format cylinders are thus firmly coupled to the impression cylinder canceled by the format cylinder gears, which mesh with the central wheel fixedly connected to the impression cylinder. Rather, the central wheel is only used to drive all format cylinders in phase with the same peripheral speed, the impression cylinder being decoupled from the central wheel and provided with a special drive that drives it regardless of the tooth pitch at a speed that is the path speed or the peripheral speed of the Format cylinder corresponds.
Aus der DE-OS 32 39 114 ist es an sich bekannt, die Umfangs einer an einen Druckzylinder anstellbaren Formwalze dadurch an die Umfangsgeschwindigkeit des Druckzylinders anzupassen, ohne daß zwischen beiden Relativbewegungen auftreten, daß die Umfangsgeschwindigkeiten gemessen und entsprechend der Differenzgeschwindigkeit durch eine Geschwindigkeitsregeleinrichtung die Umfangsgeschwindigkeiten beider Walzen so aufeinander abgestimmt werden, daß zwischen beiden keine Relativgeschwindigkeit mehr auftritt. Diese bekannte Geschwindigkeitsregeleinrichtung an einer Druckmaschine gestattet es beispielsweise, Relativgeschwindigkeiten zu vermeiden, die sich durch thermische Ausdehnungen der Zylinder einstellen können.From DE-OS 32 39 114 it is known per se, the scope a form roller which can be adjusted to a printing cylinder can thereby be adapted to the peripheral speed of the printing cylinder without the occurrence between the two relative movements, the peripheral speeds being measured and the peripheral speeds of the two rollers being matched to one another in accordance with the differential speed by means of a speed control device such that no relative speed occurs between the two. This known speed control device on a printing press makes it possible, for example, to avoid relative speeds which can occur as a result of thermal expansion of the cylinders.
Um Relativbewegungen zwischen einem Druckzylinder und einem Formatzylinder infolge von Zahnteilungsfehlern zu vermeiden, ist es aus der DE-OS 34 32 572 bekannt, sowohl den Druckzylinder als auch den Formatzylinder und die zugehörige Farbwalze durch genau steuerbare Antriebsmotore anzutreiben, ohne daß zwischen diesen eine getriebemäßige Verbindung besteht. Diese bekannte Druckmaschine ist jedoch verhältnismäßig aufwendig, weil diese keinen Zentralantrieb besitzt, sondern sämtliche Zylinder und Walzen durch eigene genau gesteuerte Antriebsmotoren angetrieben werden müssen.In order to avoid relative movements between a printing cylinder and a format cylinder as a result of tooth pitch errors, it is known from DE-OS 34 32 572 to drive both the printing cylinder and the format cylinder and the associated inking roller by means of precisely controllable drive motors, without a geared connection between them consists. However, this known printing machine is relatively complex because it does not have a central drive, but rather all cylinders and rollers have to be driven by its own precisely controlled drive motors.
Nach einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, daß das Zentralrad durch ein Getriebe mit einem auf dem Wellenzapfen des Gegendruckzylinders befestigten Zahnrad in Antriebsverbindung steht, daß ein Differentialgetriebe einschließt, in das durch ein stufenlos steuerbares Getriebe, einen Schrittmotor o.dgl. eine die Umfangsgeschwindigkeit des Gegendruckzylinders auf die Umfangsgeschwindigkeit der Formatzylinder angleichende Zusatzdrehzahl einspeisbar ist. Bei dieser Ausführungsform erhält auch der Gegendruckzylinder seinen Grundantrieb von dem Hauptantrieb der Druckmaschine, wobei nur über das Differentialgetriebe eine positive oder negative Zusatzdrehzahl eingespeist wird, um die Umfangsgeschwindigkeit des Gegendruckzylinders auf die Geschwindigkeit der zu bedruckenden Bahn anzupassen.According to an advantageous embodiment of the invention it is provided that the central wheel is in a drive connection by a gear with a gear fixed to the shaft journal of the counter-pressure cylinder that includes a differential gear, in which a stepper motor or the like through a continuously controllable gear. an additional speed equalizing the peripheral speed of the impression cylinder to the peripheral speed of the format cylinders can be fed. In this embodiment, the impression cylinder also receives its basic drive from the main drive of the printing press, only via the Differential gear a positive or negative additional speed is fed in order to adapt the peripheral speed of the impression cylinder to the speed of the web to be printed.
Zur Steuerung des stufenlos steuerbaren Getriebes (beispielsweise PIV-Getriebe), des Schrittmotors oder dergleichen wird die Geschwindigkeit der bedruckten Bahn gemessen und es werden entsprechende geschwindigkeitsproportionale Signale erzeugt, die dann in einer Steuereinrichtung die erforderlichen Steuersignale erzeugen.To control the continuously variable transmission (for example, PIV transmission), the stepping motor or the like, the speed of the printed web is measured and corresponding speed-proportional signals are generated, which then generate the necessary control signals in a control device.
Zur Messung der Bahngeschwindigkeit und Erzeugung geschwindigkeitsproportionaler Signale können Druckmarken von Sensoren erfaßt oder nachfolgende an der Bahn in gleichen Abschnittlängen vorgenommene Bearbeitungstakte gezählt werden. Wird beispielsweise die bedruckte Bahn in einer nachgeschalteten Bearbeitungsstation entsprechend den Formatlängen in Abschnitte getrennt, können die Arbeitstakte pro Zeiteinheit gezählt und in geschwindigkeitsproportionale Signale umgerechnet werden.To measure the web speed and generate speed-proportional signals, print marks can be detected by sensors or subsequent processing cycles carried out on the web in the same section lengths can be counted. If, for example, the printed web is separated into sections in a downstream processing station according to the format lengths, the work cycles can be counted per unit of time and converted into signals proportional to the speed.
Enthält die Druckmaschine Vorzugswalzen und/oder wird diese mit weiteren Bearbeitungseinrichtungen verbunden, werden diese entsprechend der gemessenen Bahngeschwindigkeit ebenfalls über steuerbare Antriebe angetrieben.If the printing press contains feed rollers and / or these are connected to further processing devices, these are also driven according to the measured web speed via controllable drives.
Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt
- Fig.1
- eine schematische Seitenansicht einer Flexodruckmaschine mit sechs Farbwerken mit Leitrollen für die zu bedruckende Bahn und nachgeschalteten Bearbeitungseinrichtungen und
- Fig.2
- eine schematische Darstellung der Antriebe für den Gegendruckzylinder, die Formatwalzen, Vorzugswalzen und nachgeschaltetenBearbeitungseinrichtungen
- Fig. 1
- is a schematic side view of a flexographic printing machine with six inking units with guide rollers for the web to be printed and downstream processing devices and
- Fig. 2
- a schematic representation of the drives for the Impression cylinders, the format rollers, feed rollers and downstream processing equipment
In Fig.1 ist schematisch eine Flexodruckmaschine mit einem Gegendruckzylinder und sechs Farbwerken dargestellt, von denen der Einfachheit halber lediglich die Formatzylinder 2 bis 7 gezeichnet sind. Die Flexodruckmaschine ist grundsätzlich bekannter Bauart und wird daher hier näher nicht beschrieben (siehe z.B. DE-OS 34 37 216). Die zu bedruckende Bahn 10 läuft in der dargestellten Weise über Leit- und Vorzugswalzen und durch eine schematisch dargestellte nachgeschaltete Bearbeitungsstation 11, in der die bedruckte Bahn beispielsweise entsprechend den Druckformatlängen mit Stanzungen versehen wird.1 shows schematically a flexographic printing machine with an impression cylinder and six inking units, of which only the format cylinders 2 to 7 are shown for the sake of simplicity. The flexographic printing machine is basically of a known type and is therefore not described in more detail here (see e.g. DE-OS 34 37 216). The
In Fig.2 ist der Gegendruckzylinder 1 und eine Formatwalze 3 schematisch dargestellt. Auf dem Wellenzapfen 12 des Gegendruckzylinders 1 ist das Zentralrad 13 frei drehbar gelagert, während das Antriebszahnrad 14 für den Gegendruckzylinder 1 fest auf den Wellenzapfen des Gegendruckzylinders 1 aufgekeilt ist. Mit dem frei drehbaren Zentralrad 13 kämmen sämtliche Formatzylinderzahnräder 3',6'. Das Zentralrad 13 und die Formatzylinderzahnräder 3',6' werden über ein Antriebsritzel 16 von dem Hauptantrieb der Druckmaschine angetrieben. Der Antrieb des Gegendruckzylinderzahnrades 14 erfolgt über das Zahnrad 17, das mit der Ausgangswelle des Differentialgetriebes 18 verbunden ist. Die Eingangsseite des Differentialgetriebes 18 ist drehfest mit dem Formatzylinderzahnrad 6' verbunden. Über den zweiten Eingangs des Differentialgetriebes 18 wird über ein stufenlos regelbares Getriebe (PIV-Getriebe) oder einen Schrittmotor o.dgl. eine positive oder negative Drehzahl zur Anpassung der Umfangsgeschwindigkeit des Gegendruckzylinders 1 an die zu bedruckende Bahn 10 bzw. die Umfangsgeschwindigkeit der Formatzylinder 2 bis 7 eingespeist. Diese Zusatzdrehzahl wird durch eine nicht dargestellte Steuereinrichtung gebildet, und zwar aufgrund von Messungen der Bahngeschwindigkeit oder der Umfangsgeschwindigkeit der Formatzylinder. Stimmt die Zahnteilung der Formatzylinder mit der des Zentralrades und des Gegendruckzylinderantriebsrades überein, braucht im günstigsten Fall kein Geschwindigkeitsausgleich über das Differentialgetriebe 18 stattzufinden. Die getriebemäßige Verbindung von Vorzugswalzen und nachgeschalteten Bearbeitungsstationen ist in Fig.2 schematisch durch Winkeltriebe, Antriebswellen und Getriebestufen dargestellt.In Figure 2, the impression cylinder 1 and a
Der Zylinder 20 repräsentiert beispielsweise eine Walze eines Vorzugswalzenpaares oder einer Bearbeitungsstation, die durch das Walzenzahnrad 21 angetrieben ist. Das Walzenzahnrad 21 kämmt mit dem Zahnrad 22, das auf die Ausgangswelle eines Differentialgetriebes 23 aufgekeilt ist. Auf die Eingangswelle des Differentialgetriebes ist das Zahnrad 24 aufgesetzt, das durch das Ritzel 25 angetrieben ist, das in der dargestellten Weise über Winkeltriebe und Getriebestufen mit dem Hauptantrieb in Verbindung steht.The
In den zweiten Eingang des Differentialgetriebes 23 wird in gleicher Weise wie in das Differentialgetriebe 18 gegebenenfalls eine Zusatzdrehzahl eingespeist.An additional speed may be fed into the second input of the
Claims (5)
- Printing machine with one counterpressure cylinder (1) and several printing attachments, of which the format cylinders (2 to 7) can be activated and deactivated by said counterpressure cylinder (1), and with, installed on the same axis as the counterpressure cylinder (1), a driven central bullgear (13) which is freely rotatable and mounted on a shaft end (12) of the counterpressure cylinder (1) or on a journal flush with said shaft end (12), and with which all the format cylinder gears mesh,
characterised in that
the counterpressure cylinder (1) is provided with a controllable, variable-speed drive (18) which drives said counterpressure cylinder (1) at a circumferential speed which essentially corresponds to the measured circumferential speed of the format cylinders (2 to 7). - Printing machine according to Claim 1, characterised in that the central bullgear (13) is functionally connected by a transmission mechanism to a gear wheel (14) mounted on the shaft end (12) of the counterpressure cylinder (1), which transmission mechanism incorporates a differential gear unit (18) into which is fed, via an infinitely variable drive, a stepping motor or similar, an additional rotational speed component which matches the circumferential speed of the counterpressure cylinder (1) to the circumferential speed of the format cylinders (2-7).
- Printing machine according to Claim 1 or 2, characterised in that, for controlling the infinitely variable drive, the stepping motor or similar, the speed of the printed web (10) is measured and speed-proportional signals are generated.
- Printing machine according to one claims 1 to 3, characterised in that, for measuring the web speed and generating speed-proportional signals, printed marks are detected by sensors, or consecutive process cycles applied to the web at equal intervals are counted.
- Printing machine according to one of claims 1 to 4, characterised in that the feed rollers and process subassemblies are provided with variable-speed drives which can be controlled in accordance with the measured web speed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4017285 | 1990-05-29 | ||
| DE4017285A DE4017285A1 (en) | 1990-05-29 | 1990-05-29 | PRINTING MACHINE, PREFERABLY FLEXO PRINTING MACHINE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0459098A1 EP0459098A1 (en) | 1991-12-04 |
| EP0459098B1 true EP0459098B1 (en) | 1995-06-07 |
Family
ID=6407417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91103979A Expired - Lifetime EP0459098B1 (en) | 1990-05-29 | 1991-03-14 | Printing machine, in particular flexographic printing machine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5239924A (en) |
| EP (1) | EP0459098B1 (en) |
| JP (1) | JPH04232054A (en) |
| CA (1) | CA2041334A1 (en) |
| DE (2) | DE4017285A1 (en) |
| ES (1) | ES2072469T3 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1270926B (en) * | 1993-05-07 | 1997-05-16 | Mondadori Editore Spa | HIGH SPEED PRINTING EQUIPMENT WITH FLEXOGRAPHIC MATRIX ON CONTINUOUS PAPER TAPE |
| GB2283939A (en) * | 1993-11-16 | 1995-05-24 | Cobden Chadwick | Printing machine motor drives |
| US5464289A (en) * | 1994-08-24 | 1995-11-07 | Beaudry; Wallace J. | Electrographic label printing system |
| DE19519141A1 (en) * | 1995-05-30 | 1996-12-05 | Fischer & Krecke Gmbh & Co | Flexo printing machine with variable print length |
| US5770907A (en) * | 1995-08-14 | 1998-06-23 | Itt Automotive Electrical Systems, Inc. | Windshield wiper motor for use in a vehicle and method for manufacturing |
| US5826509A (en) * | 1995-10-18 | 1998-10-27 | Deneka; P. Kenneth | Printing coating head device |
| US5616182A (en) * | 1995-12-04 | 1997-04-01 | Itt Automotive Electrical Systems, Inc. | Method and apparatus for wiping a windshield |
| US6040667A (en) * | 1995-12-12 | 2000-03-21 | Valeo Elecrical Systems, Inc. | System and method for driving wipers in a windshield wiper system |
| DE19854343A1 (en) * | 1998-11-25 | 2000-05-31 | Roland Man Druckmasch | Device and method for compensating slippage of a printing form sleeve |
| US6220157B1 (en) | 1999-03-23 | 2001-04-24 | Paper Converting Machine Company | Printing press with in-line central impression cylinders |
| US6070529A (en) * | 1999-03-31 | 2000-06-06 | Stevens International, Inc. | Printing press with registration control |
| DE10232026B3 (en) * | 2002-07-16 | 2004-01-08 | Man Roland Druckmaschinen Ag | Device for setting the page register for printing units of rotary printing machines |
| GB2408719B (en) | 2003-12-05 | 2006-08-09 | Roland Man Druckmasch | Web-fed rotary printing unit |
| DE102004003339A1 (en) * | 2003-12-05 | 2005-07-07 | Man Roland Druckmaschinen Ag | Web-fed rotary printing unit used in newspaper press, has auxiliary drive motors which drive other transfer and forme cylinders for set up purposes and provided with mechanical connection to assist main drive during printing operation |
| DE102004003338B4 (en) * | 2003-12-05 | 2007-07-05 | Man Roland Druckmaschinen Ag | Fed rotary printing unit |
| US7392740B2 (en) | 2003-12-05 | 2008-07-01 | Man Roland Druckmachinen Ag | Web fed rotary printing unit |
| TWI252809B (en) * | 2004-05-05 | 2006-04-11 | Bobst Sa | Method and device for initial adjustment of the register of the engraved cylinders of a rotary multicolour press |
| CH697884B1 (en) | 2004-07-13 | 2009-03-13 | Manroland Ag | Fed rotary printing unit. |
| US20070068404A1 (en) * | 2005-09-29 | 2007-03-29 | Edwin Hirahara | Systems and methods for additive deposition of materials onto a substrate |
| CN104527245B (en) * | 2014-12-22 | 2017-02-22 | 陕西北人印刷机械有限责任公司 | Gloss paint overprinting method of flexo printing machine |
| JP7156198B2 (en) * | 2019-07-25 | 2022-10-19 | 株式会社村田製作所 | Gravure printing device and manufacturing method of multilayer ceramic capacitor |
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| USRE25134E (en) * | 1962-03-13 | Rotary printing press for continuous metal strip | ||
| US2278933A (en) * | 1938-06-02 | 1942-04-07 | Speedry Gravure Corp | Control mechanism for printing presses |
| FR993049A (en) * | 1944-11-15 | 1951-10-25 | Marinoni | Automatic unwinding regulator of a pre-printed paper roll |
| DE972616C (en) * | 1949-08-18 | 1959-08-20 | Kleinewefers Soehne J | Reporting device on fabric printing machines with a spatially pivotable intermediate shaft between the report wheel and central wheel |
| DE1095247B (en) * | 1954-11-30 | 1960-12-22 | Kleinewefers Soehne J | Reporting device on material printing machines |
| DE1056573B (en) * | 1955-03-11 | 1959-05-06 | Heino Klemm | Roller printing machine for textile webs |
| US3915090A (en) * | 1973-03-21 | 1975-10-28 | Armstrong Cork Co | Printed pattern and embossed pattern registration control system |
| US4220084A (en) * | 1978-11-07 | 1980-09-02 | Magnetic Peripherals Inc. | Document endorser apparatus |
| SE426153B (en) * | 1979-01-22 | 1982-12-13 | Wifag Maschf | DRIVE DEVICE FOR A ROLLER OFFSET PRESSURE MACHINE |
| US4438694A (en) * | 1980-09-03 | 1984-03-27 | Crosfield Electronics Limited | Gravure color printing press |
| DE3239114A1 (en) * | 1981-10-22 | 1983-08-25 | Dahlgren Mfg. Co., 75235 Dallas, Tex. | Printing machine |
| DE3336792A1 (en) * | 1983-08-29 | 1985-03-14 | Windmöller & Hölscher, 4540 Lengerich | METHOD AND DEVICE FOR REGULATING THE FIXED PRINT LENGTH PRESSURE IN FLEXO PRINTING MACHINES |
| GB2146291B (en) * | 1983-09-14 | 1987-10-14 | Grace W R & Co | Rotary printing press |
| JPS60137651A (en) * | 1983-12-09 | 1985-07-22 | Rengo Co Ltd | Printing method |
| DE3437216A1 (en) * | 1984-10-10 | 1986-04-10 | Windmöller & Hölscher, 4540 Lengerich | FLEXO PRINTING MACHINE WITH SEVERAL INKS AND FORM CYLINDERS |
-
1990
- 1990-05-29 DE DE4017285A patent/DE4017285A1/en not_active Withdrawn
-
1991
- 1991-03-14 EP EP91103979A patent/EP0459098B1/en not_active Expired - Lifetime
- 1991-03-14 ES ES91103979T patent/ES2072469T3/en not_active Expired - Lifetime
- 1991-03-14 DE DE59105644T patent/DE59105644D1/en not_active Expired - Fee Related
- 1991-04-26 CA CA002041334A patent/CA2041334A1/en not_active Abandoned
- 1991-05-27 JP JP3120822A patent/JPH04232054A/en active Pending
- 1991-05-29 US US07/707,010 patent/US5239924A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4017285A1 (en) | 1991-12-05 |
| US5239924A (en) | 1993-08-31 |
| CA2041334A1 (en) | 1991-11-30 |
| ES2072469T3 (en) | 1995-07-16 |
| JPH04232054A (en) | 1992-08-20 |
| DE59105644D1 (en) | 1995-07-13 |
| EP0459098A1 (en) | 1991-12-04 |
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