EP0965447B1 - Ink fountain with an automatic ink supply - Google Patents
Ink fountain with an automatic ink supply Download PDFInfo
- Publication number
- EP0965447B1 EP0965447B1 EP99111470A EP99111470A EP0965447B1 EP 0965447 B1 EP0965447 B1 EP 0965447B1 EP 99111470 A EP99111470 A EP 99111470A EP 99111470 A EP99111470 A EP 99111470A EP 0965447 B1 EP0965447 B1 EP 0965447B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ink
- ink fountain
- fountain
- color
- connection
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/022—Ink level control devices
Definitions
- the invention relates to an ink fountain with an automatic ink supply for printing presses.
- the sheet-like ink supply of the individual printing towers is on sheetfed offset printing machines in a wedge ink fountain that lies along a duct with ink metering elements that can be adjusted in zones.
- the dosing elements form an inlet gap to the duct, through which the paint application is regulated.
- the machine's ink fountain is marked with a Color stock filled.
- Ink supply devices are also known (DE 43 39 939 C2), in which the wedge-shaped ink supply space has been reduced in size and has been designed in a closed design. The ink is supplied to the reduced and closed ink supply room by means of color cartridges.
- the disadvantage of this device is that there is inadequate or inadequate coloring and the degree of automation is low.
- an ink fountain is completely dispensed with and an ink rail extending along the ink fountain roller.
- the color is via ink guide channels arranged in the ink rail onto the surface of the ink fountain roller brought and distributed there on individual sections that have their own pumps.
- the feed channels are connected to a central distribution chamber via lines.
- the object of the invention is to provide an automatic ink supply including one needs-based coloring.
- the invention is explained in more detail below using an exemplary embodiment.
- the drawing shows an ink fountain with automatic ink supply.
- a duct roller 1 is assigned a lower part 2 of a known wedge ink fountain, wherein on Lower part 2 ink metering elements 3 for setting a gap in relation to the doctor roller 1 are arranged.
- an ink fountain insert 4 is placed and between the Lower part 2 and the bottom 7 of the ink fountain insert 4 is for sealing a flat gasket 5 is arranged.
- the bottom 7 of the ink fountain insert 4 is at least a fastening screw 6 detachably connected to the lower part 2.
- a color distribution element 8 is firmly connected to the underside 7 of the ink fountain insert 4.
- the ink distribution element 8 has an end face 9 that is operatively connected to the duct roller 1 on.
- the face 9 does not touch the duct roller 1, i.e. it there is a small gap.
- the front side 9 and the color metering elements 3 close in connection with the underside 7 of the Ink box insert 4 a color storage space 10.
- a Port 11 for the ink supply to the ink supply space 10 is arranged on the color distribution element 8 .
- the ink supply from Connection 11 to the ink supply space 10 is made via at least one color distribution channel 12, whereby further ink distribution channels 12 can be arranged across the width of the ink fountain.
- a pressure sensor 13 is arranged in the color distribution channel 12.
- connection 11 is with a metering valve 14 with a paint supply system 15 connected.
- the pressure sensor 13 is connected to the metering valve 14 via a pressure switch 16.
- the pressure in the ink reservoir 10 drops via the pressure sensor 13 and the pressure switch 16 - pressure sensor 13 and pressure switch 16 can also be in one unit be united - a signal is fed to the metering valve 14 and the ink supply space 10 color added again.
- connection 11 of the color distribution element 8 is removed from the color supply system separated, the fastening screw loosened and the ink fountain insert 4 from the wedge ink fountain removed.
- the removed unit is now outside the printing press cleanable, whereby the ink storage room is easily accessible.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
Die Erfindung betrifft einen Farbkasten mit einer automatischen Farbversorgung für Druckmaschinen. Bei Bogenoffsetdruckmaschinen befindet sich der pastöse Farbvorrat der einzelnen Drucktürme in einem längs eines Duktors anliegenden Keilfarbkasten mit zonenweise einstellbaren Farbdosierelementen. Die Dosierelemente bilden zum Duktor einen Einlaufspalt, durch den die Farbaufgabe reguliert wird. Bei Vorbereitung zum Druck wird der Farbkasten der Maschine mit einem Farbvorrat befüllt.The invention relates to an ink fountain with an automatic ink supply for printing presses. The sheet-like ink supply of the individual printing towers is on sheetfed offset printing machines in a wedge ink fountain that lies along a duct with ink metering elements that can be adjusted in zones. The dosing elements form an inlet gap to the duct, through which the paint application is regulated. When preparing to print, the machine's ink fountain is marked with a Color stock filled.
Es ist bekannt (EP 04 59 755) das Farbniveau mittels eines Sensors zu überwachen und bei zu
niedrigem Farbniveau dem Keilfarbkasten Farbe zuzuführen.
Nachteilig ist dabei der große Aufwand, der hohe Farbverbrauch und die Nichteignung für pastöse
Farben.It is known (EP 04 59 755) to monitor the color level by means of a sensor and to supply color to the wedge ink fountain if the color level is too low.
Disadvantages are the great effort, the high ink consumption and the unsuitability for pasty colors.
Aus der US 5170 710 ist es bekannt, eine Zuführeinrichtung zur Farbversorgung der Druckmaschine vorzusehen. Um einen gleichmäßigen Farbfluß zu gewährleisten, wird ein Drucksensor in der Zuleitung zur Druckmaschine angeordnet. Dieser ist mit der Drehzahlregelung einer Pumpe zum Fördern der Farbe verbunden.From US 5170 710 it is known a feed device for supplying ink to the printing press provided. To ensure an even flow of color, a pressure sensor is installed in the supply line to the printing press. This is with the speed control of a pump connected to promote the color.
Es sind auch Farbzuführeinrichtungen bekannt (DE 43 39 939 C2), bei denen der keilförmige
Farbvorratsraum verkleinert und in geschlossener Bauart ausgeführt worden ist.
Die Farbzufuhr zu dem verkleinerten und geschlossenen Farbvorratsraum erfolgt mittels Farbkartuschen.
Nachteilig ist bei dieser Einrichtung, daß eine unzureichende bzw. nicht bedarfsgerechte Einfärbung
erfolgt und der Automatisierungsgrad niedrig ist.Ink supply devices are also known (DE 43 39 939 C2), in which the wedge-shaped ink supply space has been reduced in size and has been designed in a closed design.
The ink is supplied to the reduced and closed ink supply room by means of color cartridges.
The disadvantage of this device is that there is inadequate or inadequate coloring and the degree of automation is low.
Bei einer aus der DE 28 16 881 A1 bekannten Lösung wird auf einen Farbkasten ganz verzichtet und eine sich entlang der Farbkastenwalze erstreckende Farbschiene angeordnet. Die Farbe wird über in der Farbschiene angeordnete Farbleitkanäle auf die Oberfläche der Farbkastenwalze gebracht und dort auf einzelne Abschnitte verteilt, die eigene Pumpen aufweisen. Zur Farbversorgung sind die Zuführkanäle über Leitungen mit einer zentralen Verteilerkammer verbunden.In a solution known from DE 28 16 881 A1, an ink fountain is completely dispensed with and an ink rail extending along the ink fountain roller. The color is via ink guide channels arranged in the ink rail onto the surface of the ink fountain roller brought and distributed there on individual sections that have their own pumps. For paint supply the feed channels are connected to a central distribution chamber via lines.
Aufgabe der Erfindung ist die Schaffung einer automatischen Farbversorgung einschließlich einer bedarfsgerechten Einfärbung. The object of the invention is to provide an automatic ink supply including one needs-based coloring.
Die Aufgabe wird erfindungsgemäß durch die Patentansprüche gelöst.The object is achieved by the claims.
Nachfolgend wir die Erfindung an einem Ausführungsbeispiel näher erläutert. Die Zeichnung zeigt einen Farbkasten mit automatischer Farbversorgung.The invention is explained in more detail below using an exemplary embodiment. The drawing shows an ink fountain with automatic ink supply.
Einer Duktorwalze 1 ist ein Unterteil 2 eines bekannten Keilfarbkastens zugeordnet, wobei am Unterteil 2 Farbdosierelemente 3 zur Einstellung eines Spaltes gegenüber der Duktorwalze 1 angeordnet sind. Auf das Unterteil 2 ist ein Farbkasteneinsatz 4 aufgesetzt und zwischen dem Unterteil 2 und der Unterseite 7 des Farbkasteneinsatzes 4 ist zur Abdichtung eine Flachdichtung 5 angeordnet. Die Unterseite 7 des Farbkasteneinsatzes 4 ist über mindestens eine Befestigungsschraube 6 lösbar mit dem Unterteil 2 verbunden. A duct roller 1 is assigned a lower part 2 of a known wedge ink fountain, wherein on Lower part 2 ink metering elements 3 for setting a gap in relation to the doctor roller 1 are arranged. On the lower part 2, an ink fountain insert 4 is placed and between the Lower part 2 and the bottom 7 of the ink fountain insert 4 is for sealing a flat gasket 5 is arranged. The bottom 7 of the ink fountain insert 4 is at least a fastening screw 6 detachably connected to the lower part 2.
Mit der Unterseite 7 des Farbkasteneinsatzes 4 ist ein Farbverteilelement 8 fest verbunden. Das Farbverteilelement 8 weist eine in Wirkverbindung mit der Duktorwalze 1 stehende Stirnseite 9 auf. Dabei berührt die Stirnseite 9 nicht die Duktorwalze 1, d.h. es besteht ein geringer Spalt.A color distribution element 8 is firmly connected to the underside 7 of the ink fountain insert 4. The The ink distribution element 8 has an end face 9 that is operatively connected to the duct roller 1 on. The face 9 does not touch the duct roller 1, i.e. it there is a small gap.
Die Stirnseite 9 und die Farbdosierelemente 3 schließen in Verbindung mit der Unterseite 7 des Farbkasteneinsatzes 4 einen Farbvorratsraum 10 ein. An dem Farbverteilelement 8 ist ein Anschluß 11 für die Farbzufuhr zu dem Farbvorratsraum 10 angeordnet. Die Farbzufuhr von Anschluß 11 zu dem Farbvorratsraum 10 erfolgt über mindestens einen Farbverteilkanal 12, wobei über die Breite des Farbkastens weitere Farbverteilkanäle 12 angeordnet sein können. In dem Farbverteilkanal 12 ist ein Drucksensor 13 angeordnet.The front side 9 and the color metering elements 3 close in connection with the underside 7 of the Ink box insert 4 a color storage space 10. On the color distribution element 8 is a Port 11 for the ink supply to the ink supply space 10 is arranged. The ink supply from Connection 11 to the ink supply space 10 is made via at least one color distribution channel 12, whereby further ink distribution channels 12 can be arranged across the width of the ink fountain. In a pressure sensor 13 is arranged in the color distribution channel 12.
Der Anschluß 11 ist mit über ein Zumeßventil 14 mit einer Farbversorgungsanlage 15 verbunden.The connection 11 is with a metering valve 14 with a paint supply system 15 connected.
Der Drucksensor 13 ist über einen Druckschalter 16 mit dem Zumeßventil 14 verbunden.The pressure sensor 13 is connected to the metering valve 14 via a pressure switch 16.
Sinkt bei zu wenig Farbe der Druck im Farbvorratsraum 10 wird über den Drucksensor 13 und den Druckschalter 16 - Drucksensor 13 und Druckschalter 16 können auch in einer Baueinheit vereinigt sein - ein Signal dem Zumeßventil 14 zugeleitet und dem Farbvorratsraum 10 wird wieder Farbe zugeführt.If there is not enough color, the pressure in the ink reservoir 10 drops via the pressure sensor 13 and the pressure switch 16 - pressure sensor 13 and pressure switch 16 can also be in one unit be united - a signal is fed to the metering valve 14 and the ink supply space 10 color added again.
Bei einem Farbwechsel wird der Anschluß 11 des Farbverteilelementes 8 von der Farbversorgungsanlage getrennt, die Befestigungsschraube gelöst und der Farbkasteneinsatz 4 aus dem Keilfarbkasten herausgenommen. Nunmehr ist die herausgenommene Einheit außerhalb der Druckmaschine reinigbar, wobei auch der Farbvorratsraum leicht zugänglich ist.In the event of a color change, the connection 11 of the color distribution element 8 is removed from the color supply system separated, the fastening screw loosened and the ink fountain insert 4 from the wedge ink fountain removed. The removed unit is now outside the printing press cleanable, whereby the ink storage room is easily accessible.
Nach dem Entfernen des Farbkasteneinsatzes kann ein neuer Farbkasteneinsatz eingesetzt und angeschlossen werden. Es ist aber auch möglich, den Keilfarbkasten ohne Farbkasteneinsatz zu verwenden. Eine Nachrüstung von Keilfarbkasten mit Farbkasteneinsätzen der beschriebenen Bauart ist problemlos möglich. After removing the ink fountain insert, a new ink fountain insert can be inserted and be connected. But it is also possible to use the wedge ink fountain without the ink fountain insert to use. A retrofit of wedge ink fountain with ink fountain inserts of the described Design is possible without any problems.
- 11
- Duktorwalzeduct roller
- 22
- Unterteillower part
- 33
- Farbdosierelementink metering element
- 44
- FarbkasteneinsatzInk fountain use
- 55
- Flachdichtunggasket
- 66
- Befestigungsschraubefixing screw
- 77
- Unterseitebottom
- 88th
- FarbverteilelementFarbverteilelement
- 99
- Stirnseitefront
- 1010
- FarbvorratsraumColor pantry
- 1111
- AnschlußConnection
- 1212
- FarbverteilkanalFarbverteilkanal
- 1313
- Drucksensorpressure sensor
- 1414
- Zumeßventilmetering valve
- 1515
- FarbversorgungsanlageColor supply system
- 1616
- Druckschalterpressure switch
Claims (4)
- Ink fountain with automatic ink supply for pasty printing inks with a lower part (2) inclusive of ink metering elements (3) for setting a gap relative to a doctor roller (1) and with an ink distributor element (8) which is provided with a connection (11) and has at least one ink distributing channel (12) and which forms an ink storage space (10) by its end face (9), which is associated with the doctor roller (1) at a small spacing, and the ink metering elements (3) in conjunction with a lower side (7) of the ink fountain, characterised in that the connection (11) and/or at least one ink distributing channel (12) is or are associated with a pressure sensor (13) connected with a pressure switch (16) and a ink supply installation (15) is arranged upstream of the connection (11) by way of an admetering valve (14) connected with the pressure switch (16).
- Ink fountain according to claim 1, characterised in that the ink distributor element is associated with a removable ink fountain insert (4) detachably connected with the lower side (7) of the ink fountain and the ink storage space (1) is bounded by the end face (9) of the ink distributor element (8) and the ink metering elements (3) in conjunction with the lower side of the ink fountain insert (4).
- Ink fountain according to claim 1 and 2, characterised in that the ink supply installation (15) is a central ink pumping station associated with several printing machines.
- Ink fountain according to claim 1 and 2, characterised in that the pressure switch (16) is integrated in the pressure sensor (13).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19826818 | 1998-06-16 | ||
| DE19826818A DE19826818A1 (en) | 1998-06-16 | 1998-06-16 | Ink fountain with automatic ink supply |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0965447A2 EP0965447A2 (en) | 1999-12-22 |
| EP0965447A3 EP0965447A3 (en) | 2000-04-05 |
| EP0965447B1 true EP0965447B1 (en) | 2002-12-18 |
Family
ID=7871060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99111470A Expired - Lifetime EP0965447B1 (en) | 1998-06-16 | 1999-06-12 | Ink fountain with an automatic ink supply |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0965447B1 (en) |
| DE (2) | DE19826818A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1145851A1 (en) * | 2000-04-11 | 2001-10-17 | De La Rue Giori S.A. | Method for continuously checking the production of security printing machines, application of said method and device for performing the method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1585452A (en) * | 1977-04-18 | 1981-03-04 | Harris Corp | Inking mechanism |
| US5103728A (en) * | 1990-05-29 | 1992-04-14 | Baldwin Technology Corporation | Ink level control system for offset printing presses |
| US5170710A (en) * | 1991-01-04 | 1992-12-15 | Harco Graphic Products, Inc. | Method and apparatus for handling printing ink |
| DE4339939C2 (en) * | 1993-11-24 | 1995-10-12 | Robert Wagner | Device for feeding printing ink into an inking unit of an offset printing machine |
| GB2332879B (en) * | 1996-09-30 | 2001-05-23 | Accel Graphics Systems Inc | Method and apparatus for maintaining ink level in ink fountain of printing press |
| DE19640775A1 (en) * | 1996-10-02 | 1998-04-09 | Roland Man Druckmasch | Insert for wedge ink fountains in printers |
-
1998
- 1998-06-16 DE DE19826818A patent/DE19826818A1/en not_active Withdrawn
-
1999
- 1999-06-12 EP EP99111470A patent/EP0965447B1/en not_active Expired - Lifetime
- 1999-06-12 DE DE59903809T patent/DE59903809D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59903809D1 (en) | 2003-01-30 |
| DE19826818A1 (en) | 1999-12-23 |
| EP0965447A3 (en) | 2000-04-05 |
| EP0965447A2 (en) | 1999-12-22 |
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