EP0965447A2 - Ink fountain with an automatic ink supply - Google Patents

Ink fountain with an automatic ink supply Download PDF

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Publication number
EP0965447A2
EP0965447A2 EP99111470A EP99111470A EP0965447A2 EP 0965447 A2 EP0965447 A2 EP 0965447A2 EP 99111470 A EP99111470 A EP 99111470A EP 99111470 A EP99111470 A EP 99111470A EP 0965447 A2 EP0965447 A2 EP 0965447A2
Authority
EP
European Patent Office
Prior art keywords
ink
color
connection
ink fountain
pressure switch
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
Application number
EP99111470A
Other languages
German (de)
French (fr)
Other versions
EP0965447A3 (en
EP0965447B1 (en
Inventor
Uwe Dipl.-Ing. Becker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0965447A2 publication Critical patent/EP0965447A2/en
Publication of EP0965447A3 publication Critical patent/EP0965447A3/en
Application granted granted Critical
Publication of EP0965447B1 publication Critical patent/EP0965447B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 color box, which adjoins a duct, with adjustable zones Color dosing elements.
  • the dosing elements form an inlet gap to the duct through which the color task is regulated.
  • the ink fountain of the machine is used to prepare for printing filled with a color supply.
  • 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 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.
  • the object of the invention is to provide an automatic ink supply including a 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 the lower part 2 ink metering elements 3 for setting a gap in relation to the duct 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. According to a first variant, the end face 9 does not touch the duct roller 1, ie there is a small gap and, according to a second variant (not shown), the end face 9 of the ink distribution element 8 touches the duct roller, for example via a rotating element.
  • the front side 9 and the ink metering elements 3 enclose an ink supply space 10 in connection with the underside 7 of the ink fountain insert 4.
  • a connector 11 for the ink supply to the ink supply space 10 is arranged on the ink distribution element 8.
  • the ink is supplied from connection 11 to the ink supply space 10 via at least one ink distribution channel 12, it being possible for additional ink distribution channels 12 to be arranged across the width of the ink fountain.
  • a pressure sensor 13 is arranged in the color distribution channel 12.
  • the connection 11 is connected to a paint cartridge or via a metering valve 14 to a paint supply system 15.
  • the pressure sensor 13 is connected to the metering valve 14 via a pressure switch 16. If the pressure in the ink supply space 10 drops when there is not enough color, the pressure sensor 13 and the pressure switch 16 - pressure sensor 13 and pressure switch 16 can also be combined in one structural unit - a signal is fed to the metering valve 14 and the ink supply space 10 is supplied with color again.
  • connection 11 of the ink distribution element 8 is separated from the ink supply system or from the ink cartridge, if it is not part of the ink fountain insert, the fastening screw is loosened and the ink fountain insert 4 is removed from the wedge ink fountain.
  • the removed unit can now be cleaned outside the printing press, and the ink supply space is also easily accessible.

Abstract

The ink box has an ink distribution element with a lower part including ink dispensing elements for setting a gap w.r.t. a ductor roller (1), a port (11) and at least one ink distribution channel (12) forming an ink reservoir chamber with an end at a small distance from the ductor roller and the ink dispensing elements in combination with a lower side of the ink box. A pressure sensor (13) connected to a pressure switch (16) is associated with the port and/or at least one ink distribution channel and an ink delivery system (15) is arranged before the port via a dosing valve (14) connected to the pressure switch.

Description

Die Erfindung betrifft einen Farbkasten mit einer automatischen Farbversorgung für Druckmaschinen.The invention relates to an ink fountain with an automatic ink supply for printing presses.

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 sheet-like ink supply of the individual printing towers is on sheetfed offset printing machines in a wedge color box, which adjoins a duct, with adjustable zones Color dosing elements. The dosing elements form an inlet gap to the duct through which the color task is regulated. The ink fountain of the machine is used to prepare for printing filled with a color supply.

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 and monitor the color level by means of a sensor 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.

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 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.

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 a 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 the lower part 2 ink metering elements 3 for setting a gap in relation to the duct 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. Nach einer ersten Variante berührt die Stirnseite 9 nicht die Duktorwalze 1, d.h. es besteht ein geringer Spalt und nach einer zweiten Variante (nicht dargestellt) berührt die Stirnseite 9 des Farbverteilelementes 8, beispielsweise über ein rotierendes Element, die Duktorwalze.
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.
Der Anschluß 11 ist mit einer Farbkartusche oder über ein Zumeßventil 14 mit einer Farbversorgungsanlage 15 verbunden.
Der Drucksensor 13 ist über einen Druckschalter 16 mit dem Zumeßventil 14 verbunden. 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.
Bei einem Farbwechsel wird der Anschluß 11 des Farbverteilelementes 8 von der Farbversorgungsanlage bzw. von der Farbkartusche, wenn sie nicht Bestandteil des Farbkasteneinsatzes ist, 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.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. According to a first variant, the end face 9 does not touch the duct roller 1, ie there is a small gap and, according to a second variant (not shown), the end face 9 of the ink distribution element 8 touches the duct roller, for example via a rotating element.
The front side 9 and the ink metering elements 3 enclose an ink supply space 10 in connection with the underside 7 of the ink fountain insert 4. A connector 11 for the ink supply to the ink supply space 10 is arranged on the ink distribution element 8. The ink is supplied from connection 11 to the ink supply space 10 via at least one ink distribution channel 12, it being possible for additional ink distribution channels 12 to be arranged across the width of the ink fountain. A pressure sensor 13 is arranged in the color distribution channel 12.
The connection 11 is connected to a paint cartridge or via a metering valve 14 to a paint supply system 15.
The pressure sensor 13 is connected to the metering valve 14 via a pressure switch 16. If the pressure in the ink supply space 10 drops when there is not enough color, the pressure sensor 13 and the pressure switch 16 - pressure sensor 13 and pressure switch 16 can also be combined in one structural unit - a signal is fed to the metering valve 14 and the ink supply space 10 is supplied with color again.
In the event of a color change, the connection 11 of the ink distribution element 8 is separated from the ink supply system or from the ink cartridge, if it is not part of the ink fountain insert, the fastening screw is loosened and the ink fountain insert 4 is removed from the wedge ink fountain. The removed unit can now be cleaned outside the printing press, and the ink supply space is also 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 fountains with ink fountain inserts from described design is easily possible.

BezugszeichenaufstellungList of reference symbols

11
DuktorwalzeDuct roller
22nd
UnterteilLower part
33rd
FarbdosierelementColor metering element
44th
FarbkasteneinsatzInk fountain insert
55
FlachdichtungFlat gasket
66
BefestigungsschraubeFastening screw
77
Unterseitebottom
88th
FarbverteilelementColor distribution element
99
StirnseiteFace
1010th
FarbvorratsraumColor storage room
1111
AnschlußConnection
1212th
FarbverteilkanalColor distribution channel
1313
DrucksensorPressure sensor
1414
ZumeßventilMetering valve
1515
FarbversorgungsanlagePaint supply system
1616
DruckschalterPressure switch

Claims (5)

Farbkasten mit automatischer Farbversorgung für pastöse Druckfarben mit einem Unterteil einschließlich Farbdosierelementen zur Einstellung eines Spaltes gegenüber einer Duktorwalze und mit einem Anschluß versehenen, mindestens einen Farbverteilkanal aufweisenden Farbverteilelement, welches mit einer im geringen Abstand der Duktorwalze zugeordneten Stirnseite und den Farbdosierelementen in Verbindung mit einer Unterseite des Farbkastens einen Farbvorratsraum ausbildet, dadurch gekennzeichnet, daß dem Anschluß (11) und/oder mindestens einem Farbverteilkanal (12) ein mit einem Druckschalter (16) verbundener Drucksensor (13) zugeordnet und dem Anschluß (11) über ein mit dem Druckschalter (16) verbundenes Zumeßventil (14) eine Farbversorgungsanlage (15) vorgeordnet ist.Ink fountain with automatic ink supply for pasty printing inks with a lower part including color metering elements to adjust a gap against one Duktorwalze and provided with a connection, at least one ink distribution channel having ink distribution element, which with a small distance from the duct roller assigned end face and the color metering elements in connection with a bottom of the color box forms a color supply space, characterized in that the connection (11) and / or at least one color distribution channel (12) with a Pressure switch (16) associated pressure sensor (13) assigned and the connection (11) A paint supply system via a metering valve (14) connected to the pressure switch (16) (15) is upstream. Farbkasten mit automatischer Farbversorgung für pastöse Druckfarben mit einem Unterteil einschließlich Farbdosierelementen zur Einstellung eines Spaltes gegenüber einer Duktorwalze, mit einem mit dem Unterteil lösbar verbundenen und entfernbaren Farbkasteneinsatz und mit einem Anschluß versehenen, mindestens einen Farbverteilkanal aufweisendes und mit einem Farbkasteneinsatz verbundenen Farbverteilelement, welches mit seiner im geringen Abstand der Duktorwalze zugeordneten Stirnseite und den Farbdosierelementen in Verbindung mit einer Unterseite des Farbkasteneinsatzes einen Farbvorratsraum ausbildet, dadurch gekennzeichnet, daß dem Anschluß (11) und/oder mindestens einem Farbverteilkanal (12) ein mit einem Druckschalter (16) verbundener Drucksensor (13) zugeordnet und dem Anschluß (11) über ein mit dem Druckschalter (16) verbundenes Zumeßventil (14) eine Farbversorgungsanlage (15) vorgeordnet ist.Ink fountain with automatic ink supply for pasty printing inks with a lower part including color metering elements to adjust a gap against one Ductor roller, with an ink fountain insert that is detachably connected and removable to the lower part and provided with a connection, at least one color distribution channel having and connected with a paint box insert color distribution element, which with its face and the Color metering elements in conjunction with an underside of the ink fountain insert Color storage space, characterized in that the connection (11) and / or at least one color distribution channel (12) connected to a pressure switch (16) Pressure sensor (13) assigned and the connection (11) via a with the pressure switch (16) connected metering valve (14) upstream of a paint supply system (15). Farbkasten nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Farbversorgungsanlage (15) eine Farbkartusche ist.Ink fountain according to claim 1 or 2, characterized in that the ink supply system (15) is a color cartridge. Farbkasten nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Farbversorgungsanlage (15) eine zentrale, mehreren Druckmaschinen zugeordnete Farbpumpstation ist.Ink fountain according to claim 1 or 2, characterized in that the ink supply system (15) a central ink pumping station assigned to several printing machines is. Farbkasten nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Druckschalter (16) in den Drucksensor (13) integriert ist.Ink fountain according to claim 1 or 2, characterized in that the pressure switch (16) is integrated in the pressure sensor (13).
EP99111470A 1998-06-16 1999-06-12 Ink fountain with an automatic ink supply Expired - Lifetime EP0965447B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19826818A DE19826818A1 (en) 1998-06-16 1998-06-16 Ink fountain with automatic ink supply
DE19826818 1998-06-16

Publications (3)

Publication Number Publication Date
EP0965447A2 true EP0965447A2 (en) 1999-12-22
EP0965447A3 EP0965447A3 (en) 2000-04-05
EP0965447B1 EP0965447B1 (en) 2002-12-18

Family

ID=7871060

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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)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2816881A1 (en) * 1977-04-18 1978-10-19 Harris Corp DEVICE FOR APPLYING COLOR TO A ROTATING ROLLER OF A PRINTING PRESS
EP0459755A1 (en) * 1990-05-29 1991-12-04 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
DE4339939A1 (en) * 1993-11-24 1995-06-08 Robert Wagner Device for feeding printing ink into the inking unit of a printing press
WO1998014330A1 (en) * 1996-09-30 1998-04-09 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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2816881A1 (en) * 1977-04-18 1978-10-19 Harris Corp DEVICE FOR APPLYING COLOR TO A ROTATING ROLLER OF A PRINTING PRESS
EP0459755A1 (en) * 1990-05-29 1991-12-04 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
DE4339939A1 (en) * 1993-11-24 1995-06-08 Robert Wagner Device for feeding printing ink into the inking unit of a printing press
WO1998014330A1 (en) * 1996-09-30 1998-04-09 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

Cited By (4)

* Cited by examiner, † Cited by third party
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
WO2001076875A1 (en) * 2000-04-11 2001-10-18 Kba-Giori S.A. Method for continuously checking the production of security printing machines, application of said method and device for performing the method
US6779448B2 (en) 2000-04-11 2004-08-24 Kba-Giori S.A. Method for continuously checking the production of security printing machines, application of said method and device for performing the method
KR100731848B1 (en) * 2000-04-11 2007-06-25 케이비에이-지오리 에스.에이. Method for continuously checking the production of security printing machine and device for performing the method

Also Published As

Publication number Publication date
EP0965447A3 (en) 2000-04-05
DE19826818A1 (en) 1999-12-23
DE59903809D1 (en) 2003-01-30
EP0965447B1 (en) 2002-12-18

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