EP0372253B1 - Cleaning device for an impression cylinder of a printing machine - Google Patents

Cleaning device for an impression cylinder of a printing machine Download PDF

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Publication number
EP0372253B1
EP0372253B1 EP89120878A EP89120878A EP0372253B1 EP 0372253 B1 EP0372253 B1 EP 0372253B1 EP 89120878 A EP89120878 A EP 89120878A EP 89120878 A EP89120878 A EP 89120878A EP 0372253 B1 EP0372253 B1 EP 0372253B1
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EP
European Patent Office
Prior art keywords
impression cylinder
printing press
wiping cloth
press according
wiping
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.)
Revoked
Application number
EP89120878A
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German (de)
French (fr)
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EP0372253A3 (en
EP0372253A2 (en
Inventor
Jürgen Hillenbrand
Franz Waizmann
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Baldwin Gegenheimer GmbH
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Baldwin Gegenheimer GmbH
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Application filed by Baldwin Gegenheimer GmbH filed Critical Baldwin Gegenheimer GmbH
Publication of EP0372253A2 publication Critical patent/EP0372253A2/en
Publication of EP0372253A3 publication Critical patent/EP0372253A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F35/00Cleaning arrangements or devices
    • B41F35/006Cleaning arrangements or devices for impression cylinders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41PINDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00Cleaning
    • B41P2235/10Cleaning characterised by the methods or devices
    • B41P2235/20Wiping devices
    • B41P2235/24Wiping devices using rolls of cleaning cloth
    • B41P2235/246Pressing the cleaning cloth against the cylinder

Definitions

  • the invention relates to a printing press, in particular a web-fed rotary printing press, according to the preamble of claim 1.
  • DE-A-24 53 518 describes a generic printing machine in which water is sprayed onto the impression cylinder and this is cleaned with brushes.
  • GB-A-2 047 167 describes a device for cleaning an image transfer cylinder (blanket cylinder) by means of a cleaning cloth, which is unwound from a supply roll, wound onto a storage roll and brought into contact with the cylinder between which water and a hydrocarbon are deposited - Solvents are sprayed.
  • a cleaning cloth is known from DE-U-87 07 392, which is brought into contact with a cooling roller of a printing press and wipes and transports oil from the circumference of the roller. It is a dry wipe that is not moistened.
  • the object of the invention is to reliably prevent contamination of the impression cylinder.
  • the measures advantageously not only enable permanent cleaning of the impression cylinder, but also result in permanent moistening of the impression cylinder.
  • the damp film on the impression cylinder makes the impression cylinder ink-repellent and therefore advantageously prevents ink from being deposited on the impression cylinder right from the start or in any case counteracts such ink deposit. If, in particularly difficult cases, the impression cylinder should nevertheless take on color, it is wiped off immediately, which counteracts the build-up of color.
  • the measures according to the invention therefore ensure that the impression cylinder remains clean and that interruptions to cleaning the impression cylinder can be eliminated.
  • the wipe can expediently be moistened by means of a moistening device arranged upstream of the contact point with the counter-pressure cylinder, which preferably has spray nozzles directed onto the wipe.
  • a further expedient measure can consist in the fact that the wiping cloth is guided in the area of the contact point with the impression cylinder via a pressing member which is preferably designed as an inflatable bellows.
  • these measures enable the wiping cloth to be reliably engaged and, on the other hand, the wiping cloth is put down from the counter-pressure cylinder, which results in the wiping cloth being transported in the unloaded state and thus relieving the transport mechanism.
  • Humidification can be done with water.
  • the dampening solution which is also required in the dampening units and has particularly good ink-repelling properties can expediently be used.
  • the printing machine on which FIG. 1 is based consists, in a manner known per se, of two double offset printing units 1, 2, each with an impression cylinder 3, on which two transfer cylinders 4, which are designed here as rubber cylinders, are employed, which interact with a respectively assigned plate cylinder 5.
  • Arrangements of the present type enable a diverse paper guidance.
  • a paper web 6 or 7 is printed on one side on each double printing unit 1 or 2, which was previously printed on the other in one upstream printing unit Page should have been printed. This shortly before printed side of the paper web 6 or 7 comes to rest on the respectively assigned impression cylinder 3.
  • a wiper device 8 is assigned to it, which wipes its circumference and at the same time moistens it, thereby making it clean and ink-repellent.
  • the wiping device 8 is located in a circumferential section of the respectively associated impression cylinder 3, which is not wrapped around by the paper web 6 or 7. In the case of the left double printing unit 1, this is the area between the upward and downward movement of the paper web 6, which is fed in and out again, from the outside. In the right double printing unit 2, the paper web 7 is fed from the inside and discharged inwards.
  • the wiper device 8 could therefore be arranged in the area between the two impression cylinders 3.
  • the wiper device 8 is also arranged in the area on the outside, ie in the area of the side of the associated impression cylinder 3 facing away from the other impression cylinder, in the right double printing unit 2, as is also the case in the left double printing unit 1 is.
  • the paper web 7 is accordingly guided in the form of a loop 7a around the wiper device 8.
  • the wiping devices 8 are provided behind deflecting rollers 19, which can also be assigned a wiping device of the type mentioned above in problematic cases.
  • the wiping device 8 contains a wiping cloth 9 made of fleece, which, as can best be seen from FIG. 2, can be unwound from a supply roll 10 and wound onto a storage roll 11.
  • the supply roll 10 interacts with a button 12 which triggers a signal when the supply of cloth runs out.
  • the wiping cloth 9 runs over a pressing member 13 opposite the associated counter-pressure cylinder 3, which brings the wiping cloth 9 into engagement with the circumference of the assigned counter-pressure cylinder 3 with a strip-shaped section.
  • the pressing member 13 is designed as an inflatable bellows, which presses the wipe 9 against the impression cylinder 3 in the inflated state. In the relieved state, the wipe 9 can lift off the impression cylinder 3. This makes it possible to relieve the wiping cloth 9 running in the opposite direction to the associated counter-pressure cylinder 3 during forward feed, which also relieves the feed mechanism.
  • the advancement of the wipe 9 is accomplished here by means of a reciprocating piston 14 connected to the storage roller 11 via a lever mechanism.
  • the supply roll 10 can interact with a brake or a lock, which is released when the reciprocating piston is activated.
  • the wiping cloth 9 is transported forward step by step. The required number of steps per unit of time can be set depending on the contamination of the back pressure cylinder.
  • the wiper device 8 also contains a moistening device for moistening the wipe 9, which in turn is intended to moisten the associated impression cylinder 3.
  • This moistening device consists here of a nozzle bar 15 which grips behind the wiping cloth 9, is arranged above the contact zone between table cloth 9 and impression cylinder 3 and has spray bars 16 distributed across the width of the wiping cloth and directed obliquely downwards onto the wiping cloth 9 running onto the pressing member 13. These are from a protective plate 17, which has a drip edge arranged above the contact point between wipe 9 and pressing member 13 or impression cylinder 14.
  • the nozzle bar 15 can have a collection chamber assigned to all the spray nozzles 16, which is initially filled with moist liquid and then blown out by exposure to compressed air, which results in good atomization.
  • the wiping cloth 9 is moistened with each transport step and, if necessary, between two steps.
  • the supplied dampening fluid is to be dosed so that the dampening film produced on the impression cylinder 3 does not weaken the paper web 6 or 7.
  • the dampening fluid can be water. In offset machines, such as here, the dampening solution also used in the dampening units can be used as the dampening liquid.
  • the moistening device 8 is accordingly connected to a dampening solution tank. When water is used, it is simply connected to the mains. The connection is made via a connecting piece 18 provided with a screwable sleeve.
  • the entire wiper device 8 is accommodated on a frame 20 with two lateral end plates, which are bridged by cross members and can be detachably fixed to the side walls of the printing press.

Abstract

The rotary printing machine has two double offset printing units (1, 2). Each printing unit has at least one pressure cylinder (3) which co-operates with transfer cylinder (4) which prints a picture on the continuous strip of paper (6) or (7). A wiping device (8) with a pad (9) is pressed against the pressure cylinder (3) in the area not covered by the strip of paper (6) or (7). This wiping device keeps the surface of the cylinder (3) clean and prevents the smudging of the paper (6, 7). The pad (9) is kept moist by being sprayed with water from a nozzle mounted near by.

Description

Die Erfindung betrifft eine Druckmaschine, insbesondere eine Rollenrotationsdruckmaschine, gemäß dem Oberbegriff von Anspruch 1.The invention relates to a printing press, in particular a web-fed rotary printing press, according to the preamble of claim 1.

Bei Anordnungen dieser Art kommt es häufig vor, daß die auf dem Gegendruckzylinder zur Anlage kommende Bedruckstoffseite einen frischen, noch nicht vollständig trockenen Druck trägt. Es besteht daher die Gefahr, daß sich Farbe auf dem Gegendruckzylinder ablegt. Die Erfahrung hat gezeigt, daß bei Verwendung von mit einem Lösungsmittel versetzten Farben das in der auf dem Gegendruckzylinder abgelegten Farbe enthaltene Lösungsmittel aus dem Druck des Bedruckstoffs immer noch mehr Farbe herauslöst. Die Folge davon ist, daß die auf dem Gegendruckzylinder abgelegte Farbe in unerwünschter Weise auf den Bedruckstoff zurückübertragen wird, wodurch dieser verschmiert und zu Makulatur wird. Bisher war es daher erforderlich, die Druckmaschine von Zeit zu Zeit anzuhalten, um den Gegendruckzylinder mittels eines Lappens von Hand reinigen zu können. Dies erweist sich nicht nur als sehr umständlich und aufwendig, sondern ermöglicht auch keinerlei Vorbeugung zur Verhinderung einer weiteren Verschmutzung des Gegendruckzylinders.With arrangements of this type it often happens that the printing material side coming into contact with the impression cylinder bears a fresh, not yet completely dry print. There is therefore a risk that ink will deposit on the impression cylinder. Experience has shown that when using inks mixed with a solvent, the solvent contained in the ink deposited on the impression cylinder still releases more ink from the printing of the printing material. The result of this is that the ink deposited on the impression cylinder is undesirably transferred back to the printing material, as a result of which it becomes smeared and becomes waste. So far, it has therefore been necessary to stop the printing press from time to time in order to be able to clean the impression cylinder by hand using a rag. This not only proves to be very cumbersome and complex, but also does not allow any prevention to prevent further contamination of the impression cylinder.

Die DE-A-24 53 518 beschreibt eine gattungsgemäße Druckmaschine, bei welcher Wasser auf den Gegendruckzylinder gespritzt wird und dieser mit Bürsten gereinigt wird.DE-A-24 53 518 describes a generic printing machine in which water is sprayed onto the impression cylinder and this is cleaned with brushes.

Die GB-A-2 047 167 beschreibt eine Vorrichtung zum Reinigen eines Bildübertragungszylinders (blanket cylinder) mittels eines Reinigungstuches, welches von einer Vorratsrolle abgewickelt, auf eine Speicherrolle aufgewickelt und dazwischen am Zylinder zur Anlage gebracht wird, auf welches einerseits Wasser und andererseits ein Kohlenwasserstoff-Lösungsmittel gesprüht werden.GB-A-2 047 167 describes a device for cleaning an image transfer cylinder (blanket cylinder) by means of a cleaning cloth, which is unwound from a supply roll, wound onto a storage roll and brought into contact with the cylinder between which water and a hydrocarbon are deposited - Solvents are sprayed.

Aus der DE-U-87 07 392 ist ein Reinigungstuch bekannt, welches an einer Kühlwalze einer Druckmaschine zur Anlage gebracht wird und Öl vom Umfang der Walze abstreift und abtransportiert. Es handelt sich hierbei um ein trockenes Wischtuch, welches nicht befeuchtet wird.A cleaning cloth is known from DE-U-87 07 392, which is brought into contact with a cooling roller of a printing press and wipes and transports oil from the circumference of the roller. It is a dry wipe that is not moistened.

Durch die Erfindung soll die Aufgabe gelöst werden, eine Verschmutzung des Gegendruckzylinders zuverlässig zu verhindern.The object of the invention is to reliably prevent contamination of the impression cylinder.

Diese Aufgabe wird durch die kennzeichnenden Merkmale von Anspruch 1 gelöst.This object is solved by the characterizing features of claim 1.

Diese Maßnahmen ermöglichen in vorteilhafter Weise nicht nur eine permanente Reinigung des Gegendruckzylinders, sondern ergeben gleichzeitig auch eine permanente Befeuchtung des Gegendruckzylinders. Der auf dem Gegendruckzylinder vorhandene Feuchtfilm macht den Gegendruckzylinder farbabstoßend und verhindert daher in vorteilhafter Weise von Anfang an ein Ablegen von Farbe auf dem Gegendruckzylinder bzw. wirkt einem derartigen Ablegen von Farbe jedenfalls entgegen. Sofern in besonders schwierigen Fällen der Gegendruckzylinder dennoch Farbe annehmen sollte, wird diese sofort wieder abgewischt, wodurch einem Farbaufbau entgegengewirkt wird. Die erfindungsgemäßen Maßnahmen stellen daher sicher, daß der Gegendruckzylinder sauber bleibt und daß Betriebsunterbrechungen zum Reinigen des Gegendruckzylinders entfallen können.These measures advantageously not only enable permanent cleaning of the impression cylinder, but also result in permanent moistening of the impression cylinder. The damp film on the impression cylinder makes the impression cylinder ink-repellent and therefore advantageously prevents ink from being deposited on the impression cylinder right from the start or in any case counteracts such ink deposit. If, in particularly difficult cases, the impression cylinder should nevertheless take on color, it is wiped off immediately, which counteracts the build-up of color. The measures according to the invention therefore ensure that the impression cylinder remains clean and that interruptions to cleaning the impression cylinder can be eliminated.

Zweckmäßig kann das Wischtuch mittels einer der Kontaktstelle mit dem Gegendruckzylinder vorgeordneten Befeuchtungseinrichtung befeuchtbar sein, die vorzugsweise auf das Wischtuch gerichtete Sprühdüsen aufweist. Diese Maßnahmen ergeben praktisch eine indirekte Befeuchtung des Gegendruckzylinders. Der auf die-sen aufgebrachte Feuchtfilm kann daher sehr dünn sein, so daß der Bedruckstoff hierdurch nicht geschwächt wird.The wipe can expediently be moistened by means of a moistening device arranged upstream of the contact point with the counter-pressure cylinder, which preferably has spray nozzles directed onto the wipe. These measures practically result in indirect moistening of the impression cylinder. The damp film applied to this can therefore be very thin, so that the printing material is not weakened as a result.

Eine weitere zweckmäßige Maßnahme kann darin bestehen, daß das Wischtuch im Bereich der Kontaktstelle mit dem Gegendruckzylinder über ein vorzugsweise als aufpumpbarer Balg ausgebildetes Andrückorgan geführt ist. Diese Maßnahmen ermöglichen einerseits einen zuverlässigen Eingriff des Wischtuchs und andererseits ein Abstellen des Wischtuchs vom Gegendruckzylinder, was einen Transport des Wischtuchs im entlasteten Zustand und damit eine Entlastung der Transportmechanik ergibt.A further expedient measure can consist in the fact that the wiping cloth is guided in the area of the contact point with the impression cylinder via a pressing member which is preferably designed as an inflatable bellows. On the one hand, these measures enable the wiping cloth to be reliably engaged and, on the other hand, the wiping cloth is put down from the counter-pressure cylinder, which results in the wiping cloth being transported in the unloaded state and thus relieving the transport mechanism.

Die Befeuchtung kann mit Wasser erfolgen. Bei Offsetmaschinen kann zweckmäßig das auch in den Feuchtwerken benötigte Feuchtmittel Verwendung finden, das besonders gute, farbabstoßende Eigenschaften aufweist.Humidification can be done with water. In the case of offset machines, the dampening solution which is also required in the dampening units and has particularly good ink-repelling properties can expediently be used.

Weitere vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen ergeben sich aus den restlichen Unteransprüchen.Further advantageous refinements and expedient further training of the superordinate measures result from the remaining subclaims.

Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing.

In der Zeichnung zeigen:

Figur 1
eine schematische Ansicht einer Rollenrotationsoffsetdruckmaschine in Halbsatellitenbauweise und
Figur 2
eine vergrößerte Darstellung einer einem Gegendruckzylinder zugeordneten Wischeinrichtung.
The drawing shows:
Figure 1
a schematic view of a web rotary offset printing machine in semi-satellite construction and
Figure 2
an enlarged view of a wiper device assigned to a counter pressure cylinder.

Die der Figur 1 zugrundeliegende Druckmaschine besteht in an sich bekannter Weise aus zwei Doppel-Offsetdruckwerken 1, 2 mit jeweils einem Gegendruckzylinder 3, an den zwei hier als Gummizylinder ausgebildete Übertragungszylinder 4 angestellt sind, die mit einem jeweils zugeordneten Plattenzylinder 5 zusammenwirken. Anordnungen vorliegender Art ermöglichen eine vielfältige Papierführung. Im dargestellten Beispiel wird auf jedem Doppeldruckwerk 1 bzw. 2 eine Papierbahn 6 bzw. 7 einseitig bedruckt, die zuvor in einem vorgeordneten Druckwerk bereits auf der anderen Seite bedruckt worden sein soll. Diese kurz vorher bedruckte Seite der Papierbahn 6 bzw. 7 kommt am jeweils zugeordneten Gegendruckzylinder 3 zur Anlage.The printing machine on which FIG. 1 is based consists, in a manner known per se, of two double offset printing units 1, 2, each with an impression cylinder 3, on which two transfer cylinders 4, which are designed here as rubber cylinders, are employed, which interact with a respectively assigned plate cylinder 5. Arrangements of the present type enable a diverse paper guidance. In the example shown, a paper web 6 or 7 is printed on one side on each double printing unit 1 or 2, which was previously printed on the other in one upstream printing unit Page should have been printed. This shortly before printed side of the paper web 6 or 7 comes to rest on the respectively assigned impression cylinder 3.

Um zu verhindern, daß der Gegendruckzylinder 3 verschmutzt wird, ist diesem eine Wischeinrichtung 8 zugeordnet, die seinen Umfang abwischt und gleichzeitig befeuchtet, wodurch er saubergehalten und farbabstoßend gemacht wird. Die Wischeinrichtung 8 befindet sich jeweils in einem von der Papierbahn 6 bzw. 7 nicht umschlungenen Umfangsabschnitt des jeweils zugeordneten Gegendruckzylinders 3. Beim linken Doppeldruckwerk 1 ist dies der Bereich zwischen dem Auf- und Ablauf der von außen zugeführten und nach außen wieder abgeführten Papierbahn 6. Beim rechten Doppeldruckwerk 2 wird die Papierbahn 7 von innen zugeführt und nach innen abgeführt. Die Wischeinrichtung 8 könnte daher im Bereich zwischen den beiden Gegendruckzylindern 3 angeordnet sein. Um jedoch eine gute Zugänglichkeit dieses Bereichs zu gewährleisten, ist auch beim rechten Doppeldruckwerk 2 die Wischeinrichtung 8 im Bereich der Außenseite, d. h. im Bereich der vom anderen Gegendruckzylinder abgewandten Seite des jeweils zugeordneten Gegendruckzylinders 3, angeordnet, wie das auch beim linken Doppeldruckwerk 1 der Fall ist. Die Papierbahn 7 ist dementsprechend in Form einer Schleife 7a um die Wischeinrichtung 8 herumgeführt. Hierzu sind die Wischeinrichtung 8 hintergreifende Umlenkrollen 19 vorgesehenen, denen in problematischen Fällen ebenfalls eine Wischeinrichtung obengenannter Art zugeordnet sein kann.In order to prevent the impression cylinder 3 from becoming dirty, a wiper device 8 is assigned to it, which wipes its circumference and at the same time moistens it, thereby making it clean and ink-repellent. The wiping device 8 is located in a circumferential section of the respectively associated impression cylinder 3, which is not wrapped around by the paper web 6 or 7. In the case of the left double printing unit 1, this is the area between the upward and downward movement of the paper web 6, which is fed in and out again, from the outside. In the right double printing unit 2, the paper web 7 is fed from the inside and discharged inwards. The wiper device 8 could therefore be arranged in the area between the two impression cylinders 3. However, in order to ensure good accessibility of this area, the wiper device 8 is also arranged in the area on the outside, ie in the area of the side of the associated impression cylinder 3 facing away from the other impression cylinder, in the right double printing unit 2, as is also the case in the left double printing unit 1 is. The paper web 7 is accordingly guided in the form of a loop 7a around the wiper device 8. For this purpose, the wiping devices 8 are provided behind deflecting rollers 19, which can also be assigned a wiping device of the type mentioned above in problematic cases.

Die Wischeinrichtung 8 enthält ein aus Vlies bestehendes Wischtuch 9, das, wie am besten aus Figur 2 erkennbar ist, von einer Vorratsrolle 10 abwickelbar und auf eine Speicherrolle 11 aufwickelbar ist. Die Vorratsrolle 10 wirkt mit einem Taster 12 zusammen, der bei zu Ende gehendem Tuchvorrat ein Signal auslöst. Im Bereich zwischen der Vorratsrolle 10 und der Speicherrolle 11 läuft das Wischtuch 9 über ein dem zugeordneten Gegendruckzylinder 3 gegenüberstehendes Andrückorgan 13, welches das Wischtuch 9 mit einem streifenförmigen Abschnitt zum Eingriff mit dem Umfang des zugeordneten Gegendruckzylinders 3 bringt. Im dargestellten Ausführungsbeispiel soll das Andrückorgan 13 als aufpumpbarer Balg ausgebildet sein, der im aufgepumpten Zustand das Wischtuch 9 an den Gegendruckzylinder 3 andrückt. Im entlasteten Zustand kann das Wischtuch 9 vom Gegendruckzylinder 3 abheben. Hierdurch ist es möglich, das beim Vorwärtstransport gegenläufig zum zugeordneten Gegendruckzylinder 3 laufende Wischtuch 9 während des Vorschubs zu entlasten, was auch die Vorschubmechanik entlastet.The wiping device 8 contains a wiping cloth 9 made of fleece, which, as can best be seen from FIG. 2, can be unwound from a supply roll 10 and wound onto a storage roll 11. The supply roll 10 interacts with a button 12 which triggers a signal when the supply of cloth runs out. In the area between the supply roll 10 and the storage roll 11, the wiping cloth 9 runs over a pressing member 13 opposite the associated counter-pressure cylinder 3, which brings the wiping cloth 9 into engagement with the circumference of the assigned counter-pressure cylinder 3 with a strip-shaped section. In the illustrated embodiment, the pressing member 13 is designed as an inflatable bellows, which presses the wipe 9 against the impression cylinder 3 in the inflated state. In the relieved state, the wipe 9 can lift off the impression cylinder 3. This makes it possible to relieve the wiping cloth 9 running in the opposite direction to the associated counter-pressure cylinder 3 during forward feed, which also relieves the feed mechanism.

Der Vorschub des Wischtuchs 9 wird hier durch einen über eine Hebelmechanik mit der Speicherrolle 11 verbundenen Hubkolben 14 bewerkstelligt. Die Vorratsrolle 10 kann mit einer Bremse oder einer Verriegelung zusammenwirken, die bei Aktivierung des Hubkolbens gelöst wird. Der Vorwärtstransport des Wischtuchs 9 erfolgt schrittweise. Die erforderliche Schrittzahl pro Zeiteinheit kann in Abhängigkeit von der anfallenden Verschmutzung des Gegendruckzylinders eingestellt werden.The advancement of the wipe 9 is accomplished here by means of a reciprocating piston 14 connected to the storage roller 11 via a lever mechanism. The supply roll 10 can interact with a brake or a lock, which is released when the reciprocating piston is activated. The wiping cloth 9 is transported forward step by step. The required number of steps per unit of time can be set depending on the contamination of the back pressure cylinder.

Die Wischeinrichtung 8 enthält ferner eine Befeuchtungseinrichtung zur Befeuchtung des Wischtuchs 9, welches wiederum den zugeordneten Gegendruckzylinder 3 befeuchten soll. Diese Befeuchtugnseinrichtung besteht hier aus einem das Wischtuch 9 hintergreifenden, oberhalb der Kontaktzone zwischen Tischtuch 9 und Gegendruckzylinder 3 angeordneten Düsenbalken 15 mit über die Wischtuchbreite verteilten, schräg nach unten auf das auf das Andrückorgan 13 auflaufende Wischtuch 9 gerichteten Sprühdüsen 16. Diese sind von einem Schutzblech 17 untergriffen, das eine oberhalb der Kontaktstelle zwischen Wischtuch 9 und Andrückorgan 13 bzw. Gegendruckzylinder 14 angeordnete Tropfkante aufweist.The wiper device 8 also contains a moistening device for moistening the wipe 9, which in turn is intended to moisten the associated impression cylinder 3. This moistening device consists here of a nozzle bar 15 which grips behind the wiping cloth 9, is arranged above the contact zone between table cloth 9 and impression cylinder 3 and has spray bars 16 distributed across the width of the wiping cloth and directed obliquely downwards onto the wiping cloth 9 running onto the pressing member 13. These are from a protective plate 17, which has a drip edge arranged above the contact point between wipe 9 and pressing member 13 or impression cylinder 14.

Der Düsenbalken 15 kann eine allen Sprühdüsen 16 zugeordnete Sammelkammer aufweisen, die zunächst mit Feuchtflüssigkeit gefüllt und anschließend durch Beaufschlagung mit Druckluft ausgeblasen wird, was eine gute Vernebelung ergibt. Die Befeuchtung des Wischtuchs 9 erfolgt mit jedem Transportschritt und bei Bedarf auch zwischen zwei Schritten. Die zugeführte Feuchtflüssigkeit ist dabei so zu dosieren, daß der auf dem Gegendruckzylinder 3 erzeugte Feuchtfilm die Papierbahn 6 bzw. 7 nicht schwächt. Die Feuchtflüssigkeit kann Wasser sein. Bei Offsetmaschinen, wie hier, kann als Feuchtflüssigkeit das auch in den Feuchtwerken verwendete Feuchtmittel Verwendung finden. Die Befeuchtungseinrichtung 8 ist dementsprechend an einen Feuchtmitteltank angeschlossen. Bei Verwendung von Wasser erfolgt einfach ein Anschluß an das Leitungsnetz. Der Anschluß erfolgt über einen mit einer verschraubbaren Muffe versehenen Anschlußstutzen 18.The nozzle bar 15 can have a collection chamber assigned to all the spray nozzles 16, which is initially filled with moist liquid and then blown out by exposure to compressed air, which results in good atomization. The wiping cloth 9 is moistened with each transport step and, if necessary, between two steps. The supplied dampening fluid is to be dosed so that the dampening film produced on the impression cylinder 3 does not weaken the paper web 6 or 7. The dampening fluid can be water. In offset machines, such as here, the dampening solution also used in the dampening units can be used as the dampening liquid. The moistening device 8 is accordingly connected to a dampening solution tank. When water is used, it is simply connected to the mains. The connection is made via a connecting piece 18 provided with a screwable sleeve.

Die gesamte Wischeinrichtung 8 ist auf einem Gestell 20 mit zwei seitlichen, durch Traversen überbrückten Lagerschilden aufgenommen, die an den Seitenwänden der Druckmaschine lösbar festlegbar sind.The entire wiper device 8 is accommodated on a frame 20 with two lateral end plates, which are bridged by cross members and can be detachably fixed to the side walls of the printing press.

Claims (9)

  1. A printing press, in particular a web-fed printing press, having at least one impression cylinder (3), which interacts with at least one transfer cylinder (4) transferring a printed image to a stock (6, 7), and having a cleaning device (9, 15, 16) for cleaning the circumference of the impression cylinder (3), which is disposed in the region of a circumferential section of the impression cylinder (3) around which the stock (6, 7) is not wound,
    characterised in that the cleaning device (9, 15, 16) contains a wiping cloth (9) which can be dampened with moistening agent, in particular moistening agent from the dampening units of a web-fed offset printing press, which cleans the impression cylinder (3) and at the same time applies an ink-repelling protective film to the impression cylinder (3).
  2. A printing press according to Claim 1,
    characterised in that during the routine operation the wiping cloth (9) is retained abutting against the impression cylinder (3).
  3. A printing press according to one of the preceding Claims,
    characterised in that in a circumferential region of the impression cylinder (3) kept free from the web by at least one web guide roller (19) the wiping cloth (9) can be placed against said impression cylinder.
  4. A printing press according to one of the preceding Claims,
    characterised in that the wiping cloth (9) can be moistened by means of a moistening device disposed in front of the contact point, which preferably comprises spray nozzles (16) directed onto the wiping cloth (9), and in that in the region of the contact point the wiping cloth (9) is guided over a pressure member (13) which is preferably constructed as inflatable bellows.
  5. A printing press according to one of the preceding Claims,
    characterised in that the wiping cloth (9) which can preferably wound from a dispensing roller (10) and onto a storage roller (11) can be transported progressively and during transport can be disengaged by switching off the pressure member (13).
  6. A printing press according to one of the preceding Claims,
    characterised in that the moistening device (15, 16) can be activated sporadically, preferably with the transport of the wiping cloth (9).
  7. A printing press according to one of the preceding Claims,
    characterised in that with a half satellite design the wiping device (8) associated with an impression cylinder (3) is disposed on the side remote from the other impression cylinder (3).
  8. A printing press according to one of the preceding Claims,
    characterised in that, apart from its moistening agent connection, the moistening device also comprises a water connection (18).
  9. A printing press according to at least one of the preceding Claims,
    characterised in that at least one wiping device (8) containing a moistenable wiping cloth (9) is associated with the web guide roller or the web guide rollers (19).
EP89120878A 1988-11-15 1989-11-10 Cleaning device for an impression cylinder of a printing machine Revoked EP0372253B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3838674A DE3838674A1 (en) 1988-11-15 1988-11-15 PRINTING MACHINE
DE3838674 1988-11-15

Publications (3)

Publication Number Publication Date
EP0372253A2 EP0372253A2 (en) 1990-06-13
EP0372253A3 EP0372253A3 (en) 1991-02-20
EP0372253B1 true EP0372253B1 (en) 1994-09-21

Family

ID=6367215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120878A Revoked EP0372253B1 (en) 1988-11-15 1989-11-10 Cleaning device for an impression cylinder of a printing machine

Country Status (5)

Country Link
US (1) US5040462A (en)
EP (1) EP0372253B1 (en)
JP (1) JPH02182459A (en)
AT (1) ATE111816T1 (en)
DE (3) DE3844770C2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126888A1 (en) * 1991-08-14 1993-02-18 Baldwin Gegenheimer Gmbh RAILWAY CLEANING SYSTEM FOR CLEANING A PRINTABLE RAILWAY
JP3000535B2 (en) * 1992-01-27 2000-01-17 株式会社小森コーポレーション Printing machine cylinder cleaning equipment
DE4231263A1 (en) * 1992-09-18 1994-03-24 Heidelberger Druckmasch Ag Printing unit device of a web printing machine with anti-smear device
JP2872559B2 (en) * 1993-08-04 1999-03-17 ニッカ株式会社 Crimping pad for cleaning a printing press cylinder and the like, and method of manufacturing the same
US5490459A (en) * 1995-02-24 1996-02-13 Heidelberger Druckmaschinen Ag Printing press and method for removing ink build-up with sideways web movement
DE19929843A1 (en) * 1999-06-29 2001-01-04 Baldwin Grafotec Gmbh Surface treatment device
US6729230B1 (en) * 2000-07-07 2004-05-04 Fuji Photo Film Co., Ltd. Calendar roll cleaning apparatus
DE102006012607A1 (en) * 2006-03-18 2007-09-20 Man Roland Druckmaschinen Ag Satellite printing unit of a web-fed rotary printing machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8707392U1 (en) * 1987-05-22 1987-07-16 Baldwin-Gegenheimer Gmbh, 8900 Augsburg, De

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1082409A (en) * 1911-05-23 1913-12-23 Cottrell C B & Sons Co Offset mechanism for printing-machines.
US1331733A (en) * 1917-06-18 1920-02-24 Goss Printing Press Co Ltd Offset mechanism for printing-presses
US1627041A (en) * 1923-09-19 1927-05-03 John J Leary Printing machine
US2239383A (en) * 1939-03-20 1941-04-22 Hinde & Dauch Paper Co Clearing of rolls
US2574002A (en) * 1945-12-03 1951-11-06 Interchem Corp Web handling mechanism for multicolor printing presses
DE2330277A1 (en) * 1973-06-14 1975-01-02 Maschf Augsburg Nuernberg Ag Rotary offset printing machine with double side printing - has fluid applicator for preventing smudging of print and dye
IT1019849B (en) * 1974-08-09 1977-11-30 Sassi E PRINTING MACHINE
FR2284455A1 (en) * 1974-09-11 1976-04-09 Moestue Hans DEVICE FOR CLEANING A CYLINDER OF A PRINTING MACHINE
DE2538067C3 (en) * 1974-09-11 1978-06-22 Hans Jacob Dipl.-Ing. Oesteraas Moestue (Norwegen) Washing device for a cylinder of a printing machine
SE401476B (en) * 1976-09-20 1978-05-16 Wifag Maschf PAPER PATH CONTROL FOR ROTATING PRINTING MACHINES
DE2804786A1 (en) * 1978-02-04 1979-08-09 Baldwin Gegenheimer Gmbh RUBBER CLOTHING DEVICE
US4344361A (en) * 1979-04-19 1982-08-17 Baldwin-Gegenheimer Corporation Automatic blanket cylinder cleaner
DE2932087C2 (en) * 1979-08-08 1985-10-24 Koenig & Bauer AG, 8700 Würzburg Relocatable paper guide in web-fed rotary printing machines
DD146916A1 (en) * 1979-11-14 1981-03-11 Harald Feustel DEVICE FOR PREVENTING THE STORAGE OF PRINTING COLOR ON THE PRESSURE CYLINDER
DE3104562A1 (en) * 1981-02-10 1982-09-02 Koenig & Bauer AG, 8700 Würzburg "DEVICE FOR GUIDING A PAPER WEB IN A PRINTING UNIT OF A ROLLING ROTATION PRINTING MACHINE"
DE3131170C2 (en) * 1981-08-06 1983-11-10 Koenig & Bauer AG, 8700 Würzburg Web offset rotary printing press
DE3309557A1 (en) * 1983-03-17 1984-09-27 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach RAKEL FOR A ROLLER WASHING DEVICE
DE3789975T2 (en) * 1986-08-02 1994-09-08 Dainippon Printing Co Ltd Cleaning system for a printing machine.
JPS63286350A (en) * 1987-05-19 1988-11-24 Nippon Baldwin Kk Cylinder cleaning device of printer
US4873925A (en) * 1988-01-19 1989-10-17 Jimek International Ab Spray nozzle and valve assembly
DE8814298U1 (en) * 1988-11-15 1989-01-12 Baldwin-Gegenheimer Gmbh, 8900 Augsburg, De

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8707392U1 (en) * 1987-05-22 1987-07-16 Baldwin-Gegenheimer Gmbh, 8900 Augsburg, De

Also Published As

Publication number Publication date
JPH02182459A (en) 1990-07-17
EP0372253A3 (en) 1991-02-20
US5040462A (en) 1991-08-20
DE3838674A1 (en) 1990-05-17
DE58908403D1 (en) 1994-10-27
DE3838674C2 (en) 1991-10-24
EP0372253A2 (en) 1990-06-13
ATE111816T1 (en) 1994-10-15
DE3844770C2 (en) 1994-05-26

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