EP0770483A2 - Cleaning device for cleaning cylinders of an offset printing apparatus - Google Patents
Cleaning device for cleaning cylinders of an offset printing apparatus Download PDFInfo
- Publication number
- EP0770483A2 EP0770483A2 EP96116301A EP96116301A EP0770483A2 EP 0770483 A2 EP0770483 A2 EP 0770483A2 EP 96116301 A EP96116301 A EP 96116301A EP 96116301 A EP96116301 A EP 96116301A EP 0770483 A2 EP0770483 A2 EP 0770483A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- washing
- cylinders
- washing roller
- cylinder
- roller
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2235/00—Cleaning
- B41P2235/10—Cleaning characterised by the methods or devices
- B41P2235/20—Wiping devices
- B41P2235/22—Rollers
Definitions
- the invention relates to a washing device for cleaning cylinders of an offset printing unit with a rotatably drivable washing roller and a device for moistening the washing roller with a washing liquid.
- DE-OS 17 61 111 and 42 08 079 washing devices of the type mentioned for cleaning the cylinder covered with a rubber blanket are known. If necessary, these washing devices can be adjusted to the blanket cylinder, the washing roller being wetted with a washing liquid containing solvent and guided to the rotating blanket cylinder in opposite directions over the blanket.
- DE-AS 15 61 008 it is known from DE-AS 15 61 008 to provide a washing device on each blanket cylinder.
- a method is known with which the blanket cylinder and the impression cylinder can be washed simultaneously in a sheetfed offset printing press.
- a washing device is placed on the blanket cylinder after the cylinders have been switched off to the operating position, the printing unit being operated without a paper feed.
- the rubber cylinder is placed against the impression cylinder.
- the impression cylinder is cleaned via the rubber cylinder, whereby a separate washing device for the automatic washing of the impression cylinder and the space to be provided for this can be saved.
- this known method has the disadvantage that the washing process is comparatively time-consuming, since the rubber blanket only has to be washed for a few revolutions of the rubber cylinder before the rubber cylinder can be turned on the impression cylinder. Furthermore, the cleaning effect of the blanket cylinder is comparatively low, so that a longer duration of the washing process is also necessary for this reason.
- the invention has for its object to provide a washing device of the type mentioned, which enables the simultaneous cleaning of two cylinders of an offset printing unit in a short time.
- the object is achieved in that the washing roller of the washing device can be adjusted simultaneously to two adjacent cylinders of the printing unit.
- two cylinders for example the blanket cylinder and the impression cylinder or the impression cylinder and a transfer cylinder, can be cleaned simultaneously and in direct contact with the washing roller. It has been shown that in the time required for washing a single cylinder in a conventional manner, with the device according to the invention two cylinders can be cleaned, whereby the required cleaning time depends on the heavily soiled cylinder. For the simultaneous cleaning of the second, less heavily soiled cylinder, no additional time is required.
- the axis of rotation of the washing roller can be movable in the tangential plane of contact of the two cylinders. This ensures that both cylinders are positioned equally.
- the peripheral speed of the washing roller is preferably dimensioned larger or smaller than the peripheral speed of the cylinders during the washing process, in order to ensure that the washing roller also executes a relative movement with respect to the synchronized cylinder.
- the direction of rotation of the washing roller is advantageously chosen so that it is opposite to the more dirty cylinder, i.e. has the same direction of rotation as the more polluting cylinder.
- the washing roller is arranged in an exchangeable cassette which has a moistening device, a scraper and a collecting channel for the soiled detergent.
- the washing device can be easily installed and removed for maintenance purposes.
- the washing device can, according to the invention, be provided with a control device by means of which the washing roller is lifted over the cylinder channels and the gripper rows of the cylinders assigned to it.
- the drawing shows a section of an offset printing unit with a blanket cylinder 1, an impression cylinder 2, a feeding transfer cylinder 3 and a discharging transfer cylinder 4. While the blanket cylinder 1 can be cleaned by means of a separate washing device (not shown), the impression cylinder 2 and the transfer cylinder 4 are for cleaning a single washing device 5 is provided.
- the washing device 5 consists of an elongated housing 6, in which a washing roller 7 is rotatably mounted.
- the washing roller 7 can be driven in both directions of rotation by means of a drive motor, not shown.
- the housing 6 contains a plurality of spray nozzles 8 which are arranged next to one another in the longitudinal direction of the housing and through which a suitable washing liquid can be sprayed onto the washing roller 7. Excess washing liquid and dirt picked up by the washing roller 7 are stripped off at a scraper 9 and discharged via a collecting trough 10 formed by the housing 6.
- the washing device is shown in the washing position.
- the washing roller rests equally on the impression cylinder 2 and the transfer cylinder 4, its axis of rotation being on the tangential contact plane 11 of the two cylinders.
- the washing device 5 is mounted in a degree guide which enables the washing device 5 to move in the direction of the arrows P.
- a control device not shown, is provided, by means of which the employed washing device 5 is lifted off the cylinders 2, 4 when the gripper channels 12, 13 and the gripper rows 14, 15 pass the washing roller 7.
- the use of the washing device described is not limited to the example shown.
- the washing device can, for example, also be arranged advantageously be that it can be adjusted simultaneously to the blanket cylinder and the impression cylinder, so that these two cylinders can be cleaned together.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Die Erfindung betrifft eine Waschvorrichtung zur Reinigung von Zylindern eines Offsetdruckwerkes mit einer drehend antreibbaren Waschwalze und einer Einrichtung zum Befeuchten der Waschwalze mit einer Waschflüssigkeit.The invention relates to a washing device for cleaning cylinders of an offset printing unit with a rotatably drivable washing roller and a device for moistening the washing roller with a washing liquid.
Beim Drucken bleiben auf den Zylindern eines Offsetdruckwerks, Papierfasern und gegebenenfalls Farbreste zurück, die bei einem Auftragswechsel bzw. bei zu starker Verschmutzung entfernt werden müssen. Für diesen Zweck sind aus den DE-OSen 17 61 111 und 42 08 079 Waschvorrichtungen der eingangs genannten Art zur Reinigung des mit einem Gummituch bezogenen Zylinders bekannt. Bei Bedarf sind diese Waschvorrichtungen an den Gummituchzylinder anstellbar, wobei die Waschwalze mit einer Lösungsmittel enthaltenden Waschflüssigkeit benetzt und zu dem sich drehenden Gummituchzylinder gegenläufig drehend über das Gummituch geführt wird. Bei einer Rollenrotationsdruckmaschine mit zwei Druckwerken, bei denen die Papierbahn zum Zweck des beidseitigen Bedruckens zwischen den beiden Gummizylindern durchgeführt wird, ist es aus der DE-AS 15 61 008 bekannt, an beiden Gummizylindern je eine Waschvorrichtung vorzusehen.When printing, the cylinders of an offset printing unit, paper fibers and possibly ink residues remain, which have to be removed when changing jobs or if they are too dirty. For this purpose, DE-OS 17 61 111 and 42 08 079 washing devices of the type mentioned for cleaning the cylinder covered with a rubber blanket are known. If necessary, these washing devices can be adjusted to the blanket cylinder, the washing roller being wetted with a washing liquid containing solvent and guided to the rotating blanket cylinder in opposite directions over the blanket. In a web-fed rotary printing press with two printing units, in which the paper web is carried out between the two blanket cylinders for the purpose of printing on both sides, it is known from DE-AS 15 61 008 to provide a washing device on each blanket cylinder.
Aus der DE-AS 25 31 886 ist ein Verfahren bekannt, mit dem bei einer Bogenoffsetdruckmaschine der Gummituchzylinder und der Gegendruckzylinder gleichzeitig gewaschen werden können. Bei diesem Verfahren wird eine Waschvorrichtung nach Druckabstellung der Zylinder in die Betriebsstellung an den Gummizylinder angestellt, wobei das Druckwerk ohne Papierlauf betrieben wird. Nach Inbetriebnahme der Waschvorrichtung wird der Gummizylinder an den Gegendruckzylinder angestellt. Hierbei wird der Gegendruckzylinder über den Gummizylinder gereinigt, wodurch eine gesonderte Waschvorrichtung für das automatische Waschen des Gegendruckzylinders sowie der hierfür vorzusehende Bauraum eingespart werden kann. Dieses bekannte Verfahren hat jedoch den Nachteil, daß der Waschvorgang vergleichsweise zeitaufwendig ist, da das Gummituch erst während einiger Umdrehungen des Gummizylinders gewaschen werden muß, bevor der Gummizylinder an den Gegendruckzylinder angestellt werden kann. Weiterhin ist die Reinigungswirkung des Gummituchzylinders vergleichsweise gering, so daß auch aus diesem Grund eine längere Dauer des Waschvorgangs erforderlich ist.From DE-AS 25 31 886 a method is known with which the blanket cylinder and the impression cylinder can be washed simultaneously in a sheetfed offset printing press. In this method, a washing device is placed on the blanket cylinder after the cylinders have been switched off to the operating position, the printing unit being operated without a paper feed. After commissioning the washing device, the rubber cylinder is placed against the impression cylinder. Here, the impression cylinder is cleaned via the rubber cylinder, whereby a separate washing device for the automatic washing of the impression cylinder and the space to be provided for this can be saved. However, this known method has the disadvantage that the washing process is comparatively time-consuming, since the rubber blanket only has to be washed for a few revolutions of the rubber cylinder before the rubber cylinder can be turned on the impression cylinder. Furthermore, the cleaning effect of the blanket cylinder is comparatively low, so that a longer duration of the washing process is also necessary for this reason.
Der Erfindung liegt die Aufgabe zugrunde, eine Waschvorrichtung der eingangs genannten Art zu schaffen, die das gleichzeitige Reinigen zweier Zylinder eines Offsetdruckwerks in kurzer Zeit ermöglicht.The invention has for its object to provide a washing device of the type mentioned, which enables the simultaneous cleaning of two cylinders of an offset printing unit in a short time.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Waschwalze der Waschvorrichtung gleichzeitig an zwei benachbarte Zylinder des Druckwerks anstellbar ist. Auf diese Weise können zwei Zylinder, beispielsweise der Gummituchzylinder und der Gegendruckzylinder oder der Gegendruckzylinder und ein Transferzylinder gleichzeitig und in direktem Kontakt mit der Waschwalze gereinigt werden. Hierbei hat sich gezeigt, daß in der Zeit, die zum alleinigen Waschen eines einzigen Zylinders auf herkömmliche Weise erforderlich ist, mit der erfindungsgemäßen Vorrichtung zwei Zylinder gereinigt werden können, wobei sich die erforderliche Reinigungszeit jeweils nach dem stärker verschmutzten Zylinder richtet. Für das gleichzeitige Reinigen des zweiten, weniger stark verschmutzten Zylinders, ist daher kein zusätzlicher Zeitaufwand erforderlich.The object is achieved in that the washing roller of the washing device can be adjusted simultaneously to two adjacent cylinders of the printing unit. In this way, two cylinders, for example the blanket cylinder and the impression cylinder or the impression cylinder and a transfer cylinder, can be cleaned simultaneously and in direct contact with the washing roller. It has been shown that in the time required for washing a single cylinder in a conventional manner, with the device according to the invention two cylinders can be cleaned, whereby the required cleaning time depends on the heavily soiled cylinder. For the simultaneous cleaning of the second, less heavily soiled cylinder, no additional time is required.
Erfindungsgemäß kann die Drehachse der Waschwalze in der tangentialen Berührungsebene der beiden Zylinder bewegbar sein. Hierdurch wird ein gleiches Anstellen an beide Zylinder gewährleistet. Die Umfangsgeschwindigkeit der Waschwalze wird vorzugsweise größer oder kleiner bemessen als die Umfangsgeschwindigkeit der Zylinder beim Waschvorgang, um zu erreichen, daß die Waschwalze auch gegenüber dem gleichlaufenden Zylinder eine Relativbewegung ausführt. Die Drehrichtung der Waschwalze wird vorteilhaft so gewählt, daß sie zu dem stärker verschmutzenden Zylinder gegenläufig ist, d.h. den gleichen Drehsinn wie der stärker verschmutzende Zylinder hat.According to the invention, the axis of rotation of the washing roller can be movable in the tangential plane of contact of the two cylinders. This ensures that both cylinders are positioned equally. The peripheral speed of the washing roller is preferably dimensioned larger or smaller than the peripheral speed of the cylinders during the washing process, in order to ensure that the washing roller also executes a relative movement with respect to the synchronized cylinder. The direction of rotation of the washing roller is advantageously chosen so that it is opposite to the more dirty cylinder, i.e. has the same direction of rotation as the more polluting cylinder.
Erfindungsgemäß kann weiterhin vorgesehen sein, daß die Waschwalze in einer auswechselbaren Kassette angeordnet ist, die eine Befeuchtungseinrichtung, einen Abstreifer und eine Auffangrinne für das verschmutzte Waschmittel hat. Auf diese Weise kann die Waschvorrichtung für Wartungszwecke leicht ein- und ausgebaut werden. Um eine Beschädigung der Waschwalze durch die Greiferreihen eines Zylinders, beispielsweise des Druckzylinders zu vermeiden, kann erfindungsgemäß die Waschvorrichtung mit einer Steuervorrichtung versehen sein, durch die die Waschwalze über die Zylinderkanäle und die Greiferreihen der ihr zugeordneten Zylinder hinweggehoben wird.According to the invention it can further be provided that the washing roller is arranged in an exchangeable cassette which has a moistening device, a scraper and a collecting channel for the soiled detergent. In this way, the washing device can be easily installed and removed for maintenance purposes. In order to avoid damage to the washing roller by the gripper rows of a cylinder, for example the printing cylinder, the washing device can, according to the invention, be provided with a control device by means of which the washing roller is lifted over the cylinder channels and the gripper rows of the cylinders assigned to it.
Die Erfindung wird nachfolgend anhand eines in der Zeichnung schematisch dargstellten Ausführungsbeispiels näher erläutert.The invention is explained in more detail below with the aid of an exemplary embodiment shown schematically in the drawing.
Die Zeichnung zeigt einen Ausschnitt eines Offsetdruckwerks mit einem Gummituchzylinder 1, einem Gegendruckzylinder 2, einem zuführenden Transferzylinder 3 und einem abführenden Transferzylinder 4. Während der Gummituchzylinder 1 mittels einer separaten nicht dargestellten Waschvorrichtung gereinigt werden kann, ist zur Reinigung des Gegendruckzylinders 2 und des Transferzylinders 4 eine einzige Waschvorrichtung 5 vorgesehen. Die Waschvorrichtung 5 besteht aus einem langgestreckten Gehäuse 6, in dem eine Waschwalze 7 drehbar gelagert ist. Die Waschwalze 7 ist mittels eines nicht dargestellten Antriebsmotors in beiden Drehrichtungen antreibbar. Zum Befeuchten der Waschwalze 7 enthält das Gehäuse 6 eine Vielzahl von in Gehäuselängsrichtung nebeneinander angeordneter Sprühdüsen 8, durch die eine geeignete Waschflüssigkeit auf die Waschwalze 7 aufspritzbar ist. Überschüssige Waschflüssigkeit und von der Waschwalze 7 aufgenommener Schmutz werden an einem Abstreifer 9 abgestreift und über eine durch das Gehäuse 6 gebildete Auffangrinne 10 abgeführt.The drawing shows a section of an offset printing unit with a blanket cylinder 1, an
In der Zeichnung ist die Waschvorrichtung in Waschposition gezeigt. Die Waschwalze liegt hierbei gleichermaßen an dem Gegendruckzylinder 2 und dem Transferzylinder 4 an, wobei ihre Drehachse auf der tangentialen Berührungsebene 11 der beiden Zylinder liegt. Zum An- und Abstellen der Waschvorrichtung 5 ist diese in einer Gradführung gelagert, die eine Bewegung der Waschvorrichtung 5 in Richtung der Pfeile P ermöglicht. Weiterhin ist eine nicht dargestellte Steuervorrichtung vorgesehen, durch die die angestellte Waschvorrichtung 5 von den Zylindern 2, 4 abgehoben wird, wenn die Greiferkanäle 12, 13 und die Greiferreihen 14, 15 die Waschwalze 7 passieren.In the drawing, the washing device is shown in the washing position. The washing roller rests equally on the
Die Verwendung der beschriebenen Waschvorrichtung ist nicht auf das dargestellte Beispiel beschränkt. Ebenso vorteilhaft kann die Waschvorrichtung beispielsweise so angeordnet werden, daß sie gleichzeitig an den Gummituchzylinder und an den Gegendruckzylinder anstellbar ist, so daß diese beiden Zylinder gemeinsam gereinigt werden können.The use of the washing device described is not limited to the example shown. The washing device can, for example, also be arranged advantageously be that it can be adjusted simultaneously to the blanket cylinder and the impression cylinder, so that these two cylinders can be cleaned together.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29516976U | 1995-10-26 | ||
| DE29516976U DE29516976U1 (en) | 1995-10-26 | 1995-10-26 | Washing device for cleaning cylinders of an offset printing unit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0770483A2 true EP0770483A2 (en) | 1997-05-02 |
| EP0770483A3 EP0770483A3 (en) | 1997-10-01 |
| EP0770483B1 EP0770483B1 (en) | 1999-11-17 |
Family
ID=8014633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96116301A Expired - Lifetime EP0770483B1 (en) | 1995-10-26 | 1996-10-11 | Cleaning device for cleaning cylinders of an offset printing apparatus |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0770483B1 (en) |
| JP (1) | JP2944943B2 (en) |
| AT (1) | ATE186678T1 (en) |
| DE (2) | DE29516976U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0909648A1 (en) * | 1997-07-30 | 1999-04-21 | Oxy-Dry Maschinen GmbH | Device for cleaning cylinders of a printing press |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19607037C2 (en) * | 1996-02-24 | 1999-03-25 | Roland Man Druckmasch | Process for cleaning a printing press cylinder surface with a surface structure |
| DE29802171U1 (en) * | 1998-02-09 | 1998-03-19 | Heidelberger Druckmaschinen Ag, 69115 Heidelberg | Device for cleaning two cylinders in a printing press |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1351365A (en) * | 1961-05-06 | 1964-02-07 | Roto Service | Automatic cleaning and washing device for offset machines |
| EP0004605A1 (en) * | 1978-04-10 | 1979-10-17 | M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft | Arrangement for cleaning cylinders of printing machines, particularly of offset printing machines |
| DE3120983A1 (en) * | 1980-05-28 | 1982-04-29 | Dai Nippon Insatsu K.K., Tokyo | Device for washing the blanket cylinder of a rotary offset press |
| DE3736397A1 (en) * | 1987-10-28 | 1989-05-11 | Spiess Gmbh G | Blanket washing device |
| EP0334173A1 (en) * | 1988-03-23 | 1989-09-27 | M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft | Cleaning device for the working surfaces of a machine, especially of a printing machine |
| US5257578A (en) * | 1993-01-12 | 1993-11-02 | Heidelberger Druckmaschinen Ag | Device for automatically cleaning blanket cylinders in a offset printing press |
| EP0754552A1 (en) * | 1995-07-20 | 1997-01-22 | MAN Roland Druckmaschinen AG | Method and device for washing a form cylinder and an applicator roll in a printing machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1169668A (en) * | 1967-04-20 | 1969-11-05 | Akerlund & Rausing Ab | Improvements in and relating to Means for Washing a Cylinder in a Printing Press |
| DE2531886C3 (en) * | 1975-07-17 | 1978-04-13 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Method and device for cleaning cylinders of an offset printing unit |
| US4870900A (en) * | 1986-02-07 | 1989-10-03 | Air Stamping, Inc. | Combined bearer wiper assembly and finger guard for printing apparatus |
| DE8816264U1 (en) * | 1988-03-23 | 1989-03-30 | MAN Roland Druckmaschinen AG, 6050 Offenbach | Device for cleaning the working surfaces of a working machine, in particular in a printing machine |
| US5259313A (en) * | 1991-12-20 | 1993-11-09 | Heidelberg Harris Gmbh | Method and apparatus for cleaning an inking mechanism and/or a printing mechanism in printing units of rotary printing machines |
| DE4208079C2 (en) * | 1992-03-13 | 1996-07-25 | Roland Man Druckmasch | Device for washing a cylinder of a printing press |
-
1995
- 1995-10-26 DE DE29516976U patent/DE29516976U1/en not_active Expired - Lifetime
-
1996
- 1996-10-11 AT AT96116301T patent/ATE186678T1/en not_active IP Right Cessation
- 1996-10-11 EP EP96116301A patent/EP0770483B1/en not_active Expired - Lifetime
- 1996-10-11 DE DE59603670T patent/DE59603670D1/en not_active Expired - Fee Related
- 1996-10-21 JP JP8278115A patent/JP2944943B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1351365A (en) * | 1961-05-06 | 1964-02-07 | Roto Service | Automatic cleaning and washing device for offset machines |
| EP0004605A1 (en) * | 1978-04-10 | 1979-10-17 | M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft | Arrangement for cleaning cylinders of printing machines, particularly of offset printing machines |
| DE3120983A1 (en) * | 1980-05-28 | 1982-04-29 | Dai Nippon Insatsu K.K., Tokyo | Device for washing the blanket cylinder of a rotary offset press |
| DE3736397A1 (en) * | 1987-10-28 | 1989-05-11 | Spiess Gmbh G | Blanket washing device |
| EP0334173A1 (en) * | 1988-03-23 | 1989-09-27 | M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft | Cleaning device for the working surfaces of a machine, especially of a printing machine |
| US5257578A (en) * | 1993-01-12 | 1993-11-02 | Heidelberger Druckmaschinen Ag | Device for automatically cleaning blanket cylinders in a offset printing press |
| EP0754552A1 (en) * | 1995-07-20 | 1997-01-22 | MAN Roland Druckmaschinen AG | Method and device for washing a form cylinder and an applicator roll in a printing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0909648A1 (en) * | 1997-07-30 | 1999-04-21 | Oxy-Dry Maschinen GmbH | Device for cleaning cylinders of a printing press |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09131859A (en) | 1997-05-20 |
| JP2944943B2 (en) | 1999-09-06 |
| ATE186678T1 (en) | 1999-12-15 |
| DE29516976U1 (en) | 1995-12-21 |
| EP0770483B1 (en) | 1999-11-17 |
| DE59603670D1 (en) | 1999-12-23 |
| EP0770483A3 (en) | 1997-10-01 |
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