EP0790125B1 - Device for cleaning the surface of a cylinder in a rotary printing machine - Google Patents
Device for cleaning the surface of a cylinder in a rotary printing machine Download PDFInfo
- Publication number
- EP0790125B1 EP0790125B1 EP97101504A EP97101504A EP0790125B1 EP 0790125 B1 EP0790125 B1 EP 0790125B1 EP 97101504 A EP97101504 A EP 97101504A EP 97101504 A EP97101504 A EP 97101504A EP 0790125 B1 EP0790125 B1 EP 0790125B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow body
- cleaning
- cylinder
- cleaning cloth
- rotary printing
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
Definitions
- the invention relates to a device for cleaning the lateral surfaces of cylinders in rotary printing machines, with one extending over the length of the cylinder Cleaning cloth and with a cooperating with it Pressure element, the cleaning cloth through the Pressing element can be pressed against the moving lateral surface is and the pressing element from one with an internal pressure actable elastically deformable hollow body, which expands elastically when the internal pressure is applied.
- the object is achieved in that the Air supply to the hollow body via a two-way valve is carried out and that the two-way valve of overpressure is switchable to negative pressure, so that the hollow body of an outward stretched position over a neutral Rest position is moved to an inwardly stretched position.
- the cleaning device with the invention Design assigned to a pressure cylinder, so during a negative pressure is applied to the operation of the machine, so that the gripper fingers without damaging the cleaning cloth can happen.
- the hollow body is in a neutral rest position in which the cleaning cloth does not Has contact with the cylinder surface.
- the hollow body is made of a rubber-like Material made, so with this configuration Relatively low overpressure or underpressure is a simple solution of the task at hand.
- a cylinder 1 of a rotary printing press is for Clean the outer surface 2 of a pressure element 3 one Assigned cleaning device. via the pressure element 3 a cleaning cloth 4 can be pressed onto the outer surface 2, with which the outer surface 2 of the rotating cylinder 1 of Dirt and paint residues can be cleaned.
- the pressing element is an advantageous embodiment from an elastically deformable hollow body 5, for. B. from a rubber-like material that in a mounting rail 6 is recorded.
- a hose connector 7 On the mounting rail 6 is for air supply a hose connector 7 is provided with a Two-way valve 8 is connected.
- the two-way valve 8 is with a compressed air generator 9 and a suction air generator 10 coupled so that depending on the position of the two-way valve 8 the Air supply of the hollow body 5 from positive pressure to negative pressure is switchable.
- the two-way valve 8 is in one position drawn in which the hollow body 5 with negative pressure is acted upon.
- the hollow body 5 is dash-dotted and shown in dotted lines in a neutral rest position.
- the hollow body 5 presses the Cleaning cloth 4 on the outer surface 2.
- dashed the inwardly expanded position of the hollow body 5 reproduced when a negative pressure is applied.
- the solution is thus a substantially increased distance 11 between employee and employee position of the Cleaning cloth 4 to the outer surface 2 of the cylinder 1 reached. It can be clearly seen here that the hollow body 5 one without air in the neutral rest position has a convex cross-section on the outside.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
Die Erfindung bezieht sich auf eine Vorrichtung zum Reinigen der Mantelflächen von Zylindern in Rotationsdruckmaschinen, mit einem sich über die Länge des Zylinders erstreckenden Reinigungstuch und mit einem damit zusammenwirkenden Andrückelement, wobei das Reinigungstuch durch das Andrückelement an die sich bewegende Mantelfläche andrückbar ist und das Andrückelement aus einem mit einem Innendruck beaufschlagbaren elastisch verformbaren Hohlkörper besteht, der beim Anlegen des Innendrucks elastisch expandiert.The invention relates to a device for cleaning the lateral surfaces of cylinders in rotary printing machines, with one extending over the length of the cylinder Cleaning cloth and with a cooperating with it Pressure element, the cleaning cloth through the Pressing element can be pressed against the moving lateral surface is and the pressing element from one with an internal pressure actable elastically deformable hollow body, which expands elastically when the internal pressure is applied.
Die DE 30 05 469 C2 zeigt eine derartige Reinigungseinrichtung, bei der jedoch nach Abschalten des Innendrucks lediglich ein geringer Abstand zwischen Reinigungstuch und Zylindermantelfläche entsteht, so daß z. B. beim Reinigen der Mantelfläche eines Druckzylinders die hier vorhandenen Greiferfinger eine Beschädigung des Reinigungstuches verursachen können. Dies könnte verhindern, daß die Mantelfläche des zu reinigenden Zylinders nicht sauber ist, so daß die Reinigungsvorrichtung keine optimale Wirkung erzielt.DE 30 05 469 C2 shows one of these Cleaning device, but after switching off the Internal pressure only a small distance between Cleaning cloth and cylinder surface so that e.g. B. when cleaning the outer surface of a printing cylinder here existing gripper fingers damage the Can cause cleaning cloth. This could prevent that the outer surface of the cylinder to be cleaned is not is clean, so that the cleaning device is not optimal Effect.
Ausgehend von diesem Stand der Technik ist es die Aufgabe der vorliegenden Erfindung, den Abstand zwischen der zu reinigenden Mantelfläche und dem Reinigungstuch bei abgestellter Reinigungsvorrichtung zu vergrößern.Based on this state of the art, it is the task of present invention, the distance between the cleaning surface and the cleaning cloth parked cleaning device to enlarge.
Gemäß der Erfindung wird die Aufgabe dadurch gelöst, daß die Luftversorgung des Hohlkörpers über ein Zweiwegeventil durchgeführt wird und daß das Zweiwegeventil von überdruck auf Unterdruck umschaltbar ist, so daß der Hohlkörper von einer nach außen gedehnten Position über eine neutrale Ruhelage in eine nach innen gedehnte Position bewegt wird. Ist die Reinigungsvorrichtung mit der erfindungsgemäßen Ausgestaltung einem Druckzylinder zugeordnet, so kann während des Betriebs der Maschine ein Unterdruck angelegt werden, so daß die Greiferfinger ohne Beschädigung des Reinigungstuches passieren können. Beim Stillstand der Maschine, wenn kein Unterdruck vorhanden ist, befindet sich der Hohlkörper in einer neutralen Ruhelage, in der das Reinigungstuch keinen Kontakt mit der Zylindermantelfläche hat.According to the invention the object is achieved in that the Air supply to the hollow body via a two-way valve is carried out and that the two-way valve of overpressure is switchable to negative pressure, so that the hollow body of an outward stretched position over a neutral Rest position is moved to an inwardly stretched position. Is the cleaning device with the invention Design assigned to a pressure cylinder, so during a negative pressure is applied to the operation of the machine, so that the gripper fingers without damaging the cleaning cloth can happen. When the machine is at a standstill, if none Vacuum is present, the hollow body is in a neutral rest position in which the cleaning cloth does not Has contact with the cylinder surface.
Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß der Hohlkörper ohne Luftbeaufschlagung in der neutralen Ruhelage eine nach außen gewölbten Querschnitt aufweist. Ist der Hohlkörper aus einem gummiähnlichen Material hergestellt, so kann bei dieser Ausgestaltung mit relativ geringem über- oder Unterdruck eine einfache Lösung der gestellten Aufgabe erreicht werden.This is an advantageous embodiment of the invention characterized in that the hollow body without exposure to air in the neutral rest position has an outwardly arched cross section having. The hollow body is made of a rubber-like Material made, so with this configuration Relatively low overpressure or underpressure is a simple solution of the task at hand.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt.An embodiment of the invention is in the drawing shown schematically.
Einem Zylinder 1 einer Rotationsdruckmaschine ist zum Reinigen dessen Mantelfläche 2 ein Andrückelement 3 einer Reinigungsvorrichtung zugeordnet. über das Andrückelement 3 ist ein Reinigungstuch 4 an die Mantelfläche 2 andrückbar, mit dem die Mantelfläche 2 des sich drehenden Zylinders 1 von Schmutz und Farbresten gereinigt werden kann.A cylinder 1 of a rotary printing press is for Clean the outer surface 2 of a pressure element 3 one Assigned cleaning device. via the pressure element 3 a cleaning cloth 4 can be pressed onto the outer surface 2, with which the outer surface 2 of the rotating cylinder 1 of Dirt and paint residues can be cleaned.
Das Andrückelement besteht in einer vorteilhaften Ausführung
aus einem elastisch verformbaren Hohlkörper 5, z. B. aus
einem gummiähnlichen Material, der in eine Tragschiene 6
aufgenommen ist. An der Tragschiene 6 ist zur Luftversorgung
ein Schlauchanschluß 7 vorgesehen, der mit einem
Zweiwegeventil 8 verbunden ist. Das Zweiwegeventil 8 ist mit
einem Drucklufterzeuger 9 und einem Sauglufterzeuger 10
gekoppelt, so daß je nach Stellung des Zweiwegeventils 8 die
Luftversorgung des Hohlkörpers 5 von überdruck auf Unterdruck
umschaltbar ist. Das Zweiwegeventil 8 ist in einer Stellung
gezeichnet, in der der Hohlkörper 5 mit Unterdruck
beaufschlagt ist.The pressing element is an advantageous embodiment
from an elastically deformable
In der Zeichnung ist der Hohlkörper 5 strichpunktiert und
gepünkelt in einer neutralen Ruhelage dargestellt. In der
ausgezogenen Darstellung drückt der Hohlkörper 5 das
Reinigungstuch 4 an die Mantelfläche 2 an. Gestrichelt ist
die nach innen gedehnte Position des Hohlkörpers 5
wiedergegeben, wenn ein Unterdruck angelegt ist. Mit dieser
Lösung wird somit ein wesentlich vergrößerter Abstand 11
zwischen angestellter und abgestellter Position des
Reinigungstuches 4 zur Mantelfläche 2 des Zylinders 1
erreicht. Hierbei ist klar zu erkennen, daß der Hohlkörper 5
ohne Luftbeaufschlagung in der neutralen Ruhelage einen nach
außen gewölbten Querschnitt aufweist. In the drawing, the
- 11
- Zylindercylinder
- 22nd
- MantelflächeLateral surface
- 33rd
- AndrückelementPressing element
- 44th
- ReinigungstuchCleaning cloth
- 55
- HohlkörperHollow body
- 66
- TragschieneMounting rail
- 77
- SchlauchanschlußHose connection
- 88th
- ZweiwegeventilTwo-way valve
- 99
- DrucklufterzeugerCompressed air generator
- 1010th
- SauglufterzeugerSuction air generator
- 1111
- Abstanddistance
Claims (2)
- Device for cleaning the circumferential surfaces of cylinders in rotary printing machines, which device comprises a cleaning cloth extending over the length of a respective cylinder and co-operating with a pressure element for pressing said cleaning cloth against the moving circumferential surface, the pressure element consisting of an elastically deformable hollow body to which an internal pressure can be applied and which elastically expands when the internal pressure is applied to it,
characterized in thatthe hollow body (5) is supplied with air via a two-way acting valve (8) and thatthe two-way acting valve (8) can be switched from overpressure to underpressure in order to move the hollow body (8) from an outwardly vaulted position via a neutral resting position to an inwardly vaulted position. - Device according to claim 1,
characterized in
that, in the neutral resting position, when no air is applied to the hollow body (5), said hollow body (5) has an outwardly vaulted cross section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19605957 | 1996-02-17 | ||
| DE19605957A DE19605957A1 (en) | 1996-02-17 | 1996-02-17 | Device for cleaning the outer surface of cylinders in rotary printing machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0790125A1 EP0790125A1 (en) | 1997-08-20 |
| EP0790125B1 true EP0790125B1 (en) | 2000-04-19 |
Family
ID=7785704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97101504A Expired - Lifetime EP0790125B1 (en) | 1996-02-17 | 1997-01-31 | Device for cleaning the surface of a cylinder in a rotary printing machine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5784962A (en) |
| EP (1) | EP0790125B1 (en) |
| JP (1) | JPH09220805A (en) |
| CZ (1) | CZ14997A3 (en) |
| DE (2) | DE19605957A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19920231A1 (en) * | 1999-05-03 | 2000-11-09 | Baldwin Grafotec Gmbh | Cleaning device for drum in printing machine uses D-section press bar which pushes moving cleaning cloth against dirty surface of rotating drum |
| DE19920230A1 (en) * | 1999-05-03 | 2000-11-09 | Baldwin Grafotec Gmbh | Cleaning device for the graphics industry |
| US6799514B2 (en) | 2002-01-11 | 2004-10-05 | The Procter & Gamble Company | Cleaning apparatus for printing press |
| WO2003101740A1 (en) * | 2002-05-08 | 2003-12-11 | Baldwin Graphic Systems, Inc. | Bladder with a constant contact region for cleaning a blanket cylinder |
| CN100478793C (en) * | 2002-09-17 | 2009-04-15 | 兄弟工业株式会社 | Treating device and image forming device |
| DE102006033398B4 (en) * | 2006-07-19 | 2010-01-14 | Technotrans Ag | Washing device for printing machines |
| DE102017221537A1 (en) * | 2017-11-30 | 2019-06-06 | Robert Bosch Gmbh | Apparatus and method for cleaning a portion of a housing surface |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344361A (en) * | 1979-04-19 | 1982-08-17 | Baldwin-Gegenheimer Corporation | Automatic blanket cylinder cleaner |
| US4757763A (en) * | 1979-04-19 | 1988-07-19 | Baldwin Technology Corporation | Automatic blanket cylinder cleaner |
| DE3309557A1 (en) * | 1983-03-17 | 1984-09-27 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | RAKEL FOR A ROLLER WASHING DEVICE |
| DD227927A1 (en) * | 1984-11-02 | 1985-10-02 | Polygraph Leipzig | DEVICE FOR CLEANING A CYLINDER OF A PRINTING MACHINE |
| JPS63286350A (en) * | 1987-05-19 | 1988-11-24 | Nippon Baldwin Kk | Cylinder cleaning device of printer |
| DE4008159A1 (en) * | 1990-03-15 | 1991-09-19 | Heidelberger Druckmasch Ag | CLEANING DEVICE FOR A PRINTING MACHINE |
| DE4142422A1 (en) * | 1991-12-20 | 1993-06-24 | Baldwin Gegenheimer Gmbh | DEVICE FOR CLEANING A ROTARY PRINTING MACHINE |
| DE4319258C2 (en) * | 1993-06-09 | 2003-10-09 | Heidelberger Druckmasch Ag | Cleaning device for printing machines |
| DK83193A (en) * | 1993-07-09 | 1995-01-10 | Tresu A S Maskinfabriken | Method and apparatus for cleaning the surface of a roller |
| US5519914A (en) * | 1995-08-01 | 1996-05-28 | Egan; Ronald G. | Contact type automatic roll cleaner |
-
1996
- 1996-02-17 DE DE19605957A patent/DE19605957A1/en not_active Ceased
-
1997
- 1997-01-17 CZ CZ97149A patent/CZ14997A3/en unknown
- 1997-01-31 EP EP97101504A patent/EP0790125B1/en not_active Expired - Lifetime
- 1997-01-31 DE DE59701458T patent/DE59701458D1/en not_active Expired - Fee Related
- 1997-02-13 JP JP9028227A patent/JPH09220805A/en not_active Withdrawn
- 1997-02-18 US US08/801,516 patent/US5784962A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19605957A1 (en) | 1997-08-21 |
| DE59701458D1 (en) | 2000-05-25 |
| JPH09220805A (en) | 1997-08-26 |
| CZ14997A3 (en) | 1997-09-17 |
| EP0790125A1 (en) | 1997-08-20 |
| US5784962A (en) | 1998-07-28 |
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