EP0924071A1 - Method and device for dispensing ink in the inking unit of printing machines - Google Patents

Method and device for dispensing ink in the inking unit of printing machines Download PDF

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Publication number
EP0924071A1
EP0924071A1 EP98122140A EP98122140A EP0924071A1 EP 0924071 A1 EP0924071 A1 EP 0924071A1 EP 98122140 A EP98122140 A EP 98122140A EP 98122140 A EP98122140 A EP 98122140A EP 0924071 A1 EP0924071 A1 EP 0924071A1
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EP
European Patent Office
Prior art keywords
cartridge
valve
piston
holder
ink
Prior art date
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Granted
Application number
EP98122140A
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German (de)
French (fr)
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EP0924071B1 (en
Inventor
Renko Möllers
Hubert Peik
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Publication of EP0924071A1 publication Critical patent/EP0924071A1/en
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    • 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

Definitions

  • the invention relates to a method and an apparatus for feeding Printing ink in the inking unit of printing presses with an ink fountain, which is used for metered filling is assigned a cartridge in a holder that a has displaceable cartridge plunger which is pneumatic for pressing out is acted upon and at the other end a closable outlet opening having.
  • U1 shows such a pneumatic Cartridge squeezing device for squeezing tubular cartridges, the have a mouthpiece at the front end and a mouthpiece at the rear end inserted movable cartridge base are closed.
  • the cartridge is here received in a holder which has a compressed air connection for Feed compressed air into the rear end of the cartridge around the cartridge piston to apply a working pressure.
  • the object of the present invention is based on this State of the art to provide a method and an apparatus with which exact volumetric dosing of the printing ink from the cartridge is made possible.
  • this object is achieved by a method which following process steps is marked: The cartridge is marked with a Pneumatic working pressure is applied, the position of the cartridge piston determined, the cartridge valve is opened, the cartridge piston is in a move the preset target position and then when it is reached Cartridge valve closed position.
  • These process steps can be used precisely meter the amount of ink supplied so that it can also be used in the printing press minimal ink quantities can be worked in the ink fountain.
  • the object is achieved by a device which thereby is characterized in that the holder of the cartridge is controllable Pneumatic connection has that on the bracket when pressurized Cartridge closed valve is arranged that in the upper part of the holder Distance sensor for determining the position of the cartridge piston is provided, and that pneumatic actuating means are provided for opening the cartridge valve are, the pressurization of the cartridge and the actuating means separately he follows.
  • the ink supply in the ink fountain can be done automate, d. H. it can be exactly according to the respective need Add the dosed amount of paint.
  • the distance sensor is as Ultrasonic sensor trained. With this inexpensive sensor is an exact Position measurement of the cartridge piston reached.
  • the cartridge valve is designed as a lift valve that over Pressurization is controllable.
  • the over Pressurization is also controllable.
  • the cartridge valve is designed as a rotary valve which a pneumatic cylinder is controllable.
  • a sealing plate 3 is placed on top of the cartridge 1, which is supported on the bracket 2 and has a compressed air connection 4, with which the cartridge piston 5 can be acted upon pneumatically.
  • a sensor 6 is arranged, which can be designed as an ultrasonic sensor can and the respective position of the hard shower piston 5 in the cartridge 1 measures and forwards the result to a control device.
  • a cartridge valve 7 is provided, which as Lift valve can be formed.
  • a is in the lower part of the bracket 2
  • Lifting device 8 is provided, which has a compressed air connection 9, which has a Lift plate 10 opens the cartridge valve 7.
  • the pressurization of the cartridge piston 5 can be done via a valve 11 control that cooperates with another valve 12, via which Cartridge valve 7 is opened.
  • the control unit not shown, which also the Receives signals from sensor 6, initially applied a constant Working pressure via the valve 11 the cartridge piston 5 when closed Cartridge valve 7. If the position of the cartridge piston 5 is determined, the Valve 12 opens the cartridge valve 7 until the cartridge piston 5 in a preset target position is moving, which is a certain squeezed Color quantity corresponds.
  • Fig. 2 shows a pinch valve 13, which at the outlet of the Cartridge 1 is provided.
  • the hose pinch valve 13 consists of a Hose 14, to which a valve body 15 is assigned.
  • the valve body 15 comprises the hose 14 and contains a piston 16 with which the hose is squeezed can be. Via a compressed air connection 17, which can be controlled by the valve 12, the piston 16 is moved until the hose 14 is closed. To the Opening the hose 14, the piston 16 is in its via a compression spring 18 Moved back to the starting position.
  • Fig. 3 shows at the lower end of the cartridge 1, a rotary valve 19 which at the Outlet opening 20 of the cartridge 1 is provided.
  • the valve body 21 has one Rotary insert 22, which has openings 23 similar to the outlet openings 20 having. By turning through about 90 °, the rotating insert 22 can be in one turn closed position, as drawn, or to a second position, at which the outlet openings 20 and the openings 23 of the rotary insert 22nd match so that color can leak out.
  • the controller itself can e.g. B. about a pneumatic cylinder, not shown, take place with the rotary insert 22nd is coupled.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

The method involves applying a pneumatic pressure on an ink cartridge (1), determining a position of a cartridge butt (5), and opening a cartridge valve (7). The cartridge butt is moved into a preset nominal position, and the cartridge valve is closed at reaching of this position. The method further involves supplying ink in a printing machines with an ink box associated with a cartridge held in a fixture. The cartridge comprises an adjustable butt which is pneumatically driven, and a lockable outlet aperture. An Independent claim is included for an ink supply arrangement.

Description

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Zuführen von Druckfarbe im Farbwerk von Druckmaschinen mit einem Farbkasten, dem zum dosierten Befüllen eine Kartusche in einer Halterung zugeordnet ist, die einen verschiebbaren Kartuschenkolben aufweist, der zum Auspressen pneumatisch beaufschlagt wird und die am anderen Ende eine verschließbare Austrittsöffnung aufweist.The invention relates to a method and an apparatus for feeding Printing ink in the inking unit of printing presses with an ink fountain, which is used for metered filling is assigned a cartridge in a holder that a has displaceable cartridge plunger which is pneumatic for pressing out is acted upon and at the other end a closable outlet opening having.

Die DE 295 19 348 U1 zeigt eine derartige pneumatische Kartuschenauspreßvorrichtung zum Auspressen von rohrförmigen Kartuschen, die am vorderen Ende ein Mundstück aufweisen und am hinteren Ende durch einen eingesetzten verschiebbaren Kartuschenboden verschlossen sind. Die Kartusche ist hierbei in einer Halterung aufgenommen, die einen Druckluftanschluß aufweist zum Zuführen von Druckluft in das hintere Kartuschenende, um den Kartuschenkolben mit einem Arbeitsdruck zu beaufschlagen.DE 295 19 348 U1 shows such a pneumatic Cartridge squeezing device for squeezing tubular cartridges, the have a mouthpiece at the front end and a mouthpiece at the rear end inserted movable cartridge base are closed. The cartridge is here received in a holder which has a compressed air connection for Feed compressed air into the rear end of the cartridge around the cartridge piston to apply a working pressure.

Die vorliegende Erfindung hat sich die Aufgabe gestellt, ausgehend von diesem Stand der Technik, ein Verfahren und eine Vorrichtung zu schaffen, mit der eine exakte volumetrische Dosierung der Druckfarbe aus der Kartusche ermöglicht wird.The object of the present invention is based on this State of the art to provide a method and an apparatus with which exact volumetric dosing of the printing ink from the cartridge is made possible.

Gemäß der Erfindung wird diese Aufgabe durch ein Verfahren gelöst, das durch folgende Verfahrensschritte gekennzeichnet ist: Die Kartusche wird mit einem pneumatischen Arbeitsdruck beaufschlagt, die Stellung des Kartuschenkolbes wird ermittelt, das Kartuschenventil wird geöffnet, der Kartuschenkolben wird in eine voreingestellte Soll-Position verfahren und danach wird beim Erreichen dieser Position das Kartuschenventil geschlossen. Mit diesen Verfahrensschritten läßt sich die zugeführte Farbmenge exakt dosieren, so daß in der Druckmaschine auch mit minimalen Farbmengen im Farbkasten gearbeitet werden kann.According to the invention, this object is achieved by a method which following process steps is marked: The cartridge is marked with a Pneumatic working pressure is applied, the position of the cartridge piston determined, the cartridge valve is opened, the cartridge piston is in a move the preset target position and then when it is reached Cartridge valve closed position. These process steps can be used precisely meter the amount of ink supplied so that it can also be used in the printing press minimal ink quantities can be worked in the ink fountain.

Weiterhin wird die Aufgabe durch eine Vorrichtung gelöst, die dadurch gekennzeichnet ist, daß die Halterung der Kartusche einen steuerbaren Pneumatikanschluß aufweist, daß an der Halterung ein bei Druckbeaufschlagung der Kartusche geschlossenes Ventil angeordnet ist, daß im oberen Teil der Halterung ein Abstandsensor zur Ermittlung der Stellung des Kartuschenkolbens vorgesehen ist, und daß pneumatische Stellmittel zum Öffnen des Kartuschenventils vorgesehen sind, wobei die Druckbeaufschlagung der Kartusche und der Stellmittel getrennt erfolgt. Mit dieser einfachen Lösung läßt sich die Farbzufuhr im Farbkasten automatisieren, d. h. es läßt sich entsprechend dem jeweiligen Bedarf eine genau dosierte Farbmenge zuführen.Furthermore, the object is achieved by a device which thereby is characterized in that the holder of the cartridge is controllable Pneumatic connection has that on the bracket when pressurized Cartridge closed valve is arranged that in the upper part of the holder Distance sensor for determining the position of the cartridge piston is provided, and that pneumatic actuating means are provided for opening the cartridge valve are, the pressurization of the cartridge and the actuating means separately he follows. With this simple solution the ink supply in the ink fountain can be done automate, d. H. it can be exactly according to the respective need Add the dosed amount of paint.

In einer vorteilhaften Ausgestaltung der Erfindung ist der Abstandsensor als Ultraschallsensor ausgebildet. Mit diesem preiswerten Sensor ist eine exakte Wegmessung des Kartuschenkolbens erreicht.In an advantageous embodiment of the invention, the distance sensor is as Ultrasonic sensor trained. With this inexpensive sensor is an exact Position measurement of the cartridge piston reached.

Eine weitere vorteilhatte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß das Kartuschenventil als Hubventil ausgebildet ist, das über Druckbeaufschlagung steuerbar ist. In einer Alternative hierzu ist das Kartuschenventil als Schlauchquetschventil ausgebildet, das über Druckbeaufschlagung ebenfalls steuerbar ist. Eine weitere Variante ist dadurch gekennzeichnet, daß das Kartuschenventil als Drehventil ausgebildet ist, das über einen Pneumatikzylinder steuerbar ist. Diese unterschiedlichen Ausgestaltungen des Kartuschenventils können je nach Anwendungsfall gewählt werden und ermöglichen ein genaues Dosieren der Druckfarbe. Another advantageous embodiment of the invention is characterized in that that the cartridge valve is designed as a lift valve that over Pressurization is controllable. In an alternative to that is Cartridge valve designed as a pinch valve, the over Pressurization is also controllable. This is another variant characterized in that the cartridge valve is designed as a rotary valve which a pneumatic cylinder is controllable. These different configurations of the Cartridge valves can be selected and enabled depending on the application accurate dosing of the ink.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen schematisch dargestellt.An embodiment of the invention is schematic in the drawings shown.

Es zeigt:

Fig. 1
einen Teilquerschnitt der Vorrichtung mit Kartusche und Hubventil,
Fig. 2
einen Querschnitt durch ein Schlauchquetschventil,
Fig. 3
einen Querschnitt durch ein Drehventil mit Draufsicht.
It shows:
Fig. 1
a partial cross section of the device with cartridge and lift valve,
Fig. 2
a cross section through a pinch valve,
Fig. 3
a cross section through a rotary valve with a plan view.

Eine Kartusche 1, die mit Druckfarbe gefüllt ist, ist in einer Halterung 2 eingesetzt und ist über einem nicht dargestellten Farbkasten eines Farbwerks angeordnet, wobei sich die Halterung mit der Kartusche in Längsrichtung des Farbkastens bewegen kann, um in den unterschiedlichen Bereichen den Farbvorrat im Farbkasten zu ergänzen. Auf die Kartusche 1 ist oben eine Dichtplatte 3 aufgesetzt, die sich auf der Halterung 2 abstützt und einen Druckluftanschluß 4 aufweist, mit dem der Kartuschenkolben 5 pneumatisch beaufschlagbar ist. Weiterhin ist in der Dichtplatte 3 ein Sensor 6 angeordnet, der als Ultraschallsensor ausgebildet sein kann und die jeweilige Stellung des Hartuschenkolbens 5 in der Kartusche 1 mißt und das Ergebnis einer Steuereinrichtung zuleitet.A cartridge 1, which is filled with printing ink, is inserted in a holder 2 and is arranged over an ink fountain (not shown) of an inking unit, the holder with the cartridge in the longitudinal direction of the ink fountain can move to the color supply in the different areas To add color box. A sealing plate 3 is placed on top of the cartridge 1, which is supported on the bracket 2 and has a compressed air connection 4, with which the cartridge piston 5 can be acted upon pneumatically. Furthermore, in the Sealing plate 3, a sensor 6 is arranged, which can be designed as an ultrasonic sensor can and the respective position of the hard shower piston 5 in the cartridge 1 measures and forwards the result to a control device.

Am unteren Ende der Kartusche 1 ist ein Kartuschenventil 7 vorgesehen, das als Hubventil ausgebildet sein kann. Hierzu ist im unteren Teil der Halterung 2 eine Hubeinrichtung 8 vorgesehen, die einen Druckluftanschluß 9 aufweist, der über eine Hubplatte 10 das Kartuschenventil 7 öffnet.At the lower end of the cartridge 1, a cartridge valve 7 is provided, which as Lift valve can be formed. For this purpose, a is in the lower part of the bracket 2 Lifting device 8 is provided, which has a compressed air connection 9, which has a Lift plate 10 opens the cartridge valve 7.

Die Druckbeaufschlagung des Kartuschenkolbens 5 läßt sich über ein Ventil 11 steuern, das mit einem weiteren Ventil 12 zusammenwirkt, über das das Kartuschenventil 7 geöffnet wird. Die nicht dargestellte Steuereinheit, die auch die Signale des Sensors 6 empfängt, beaufschlagt zunächst mit einem konstanten Arbeitsdruck über das Ventil 11 den Kartuschenkolben 5 bei geschlossenem Kartuschenventil 7. Ist die Stellung des Kartuschenkolbens 5 ermittelt, wird über das Ventil 12 das Kartuschenventil 7 so lange geöffnet, bis der Kartuschenkolben 5 in eine voreingestellte Soll-Position verfahren ist, was einer bestimmten ausgepreßten Farbmenge entspricht. Bei Erreichen dieser Soll-Position wird die Druckbeaufschlagung des Kartuschenventils 7 über das Ventil 12 unterbrochen, so daß das Kartuschenventil 7 wieder geschlossen wird, was über die Druckbeaufschlagung des Kartuschenkolbens 5 automatisch erfolgt, oder mit anderen Worten gesagt, beim Erreichen dieser Soll-Position wird das Kartuschenventil 7 über das Ventil 12 mit Druck beaufschlagt, so daß das Kartuschenventil 7 geschlossen wird, was über die Druckbeaufschlagung der Hubeinrichtung 8 automatisch erfolgt.The pressurization of the cartridge piston 5 can be done via a valve 11 control that cooperates with another valve 12, via which Cartridge valve 7 is opened. The control unit, not shown, which also the Receives signals from sensor 6, initially applied a constant Working pressure via the valve 11 the cartridge piston 5 when closed Cartridge valve 7. If the position of the cartridge piston 5 is determined, the Valve 12 opens the cartridge valve 7 until the cartridge piston 5 in a preset target position is moving, which is a certain squeezed Color quantity corresponds. When this target position is reached, the Pressurization of the cartridge valve 7 interrupted via the valve 12, see above that the cartridge valve 7 is closed again, what about the Pressurization of the cartridge piston 5 takes place automatically, or with in other words, when it reaches this target position, it will Cartridge valve 7 pressurized via valve 12, so that Cartridge valve 7 is closed, which is about the pressurization of the Lifting device 8 takes place automatically.

Fig. 2 zeigt ein Schlauchquetschventil 13, das an der Austrittsöffnung der Kartusche 1 vorgesehen ist. Das Schlauchquetschventil 13 besteht aus einem Schlauch 14, dem ein Ventilkörper 15 zugeordnet ist. Der Ventilkörper 15 umfaßt den Schlauch 14 und enthält einen Kolben 16, mit dem der Schlauch zugequetscht werden kann. Über einen Druckluftanschluß 17, der von dem Ventil 12 steuerbar ist, wird der Kolben 16 soweit verfahren, bis der Schlauch 14 geschlossen ist. Zum Öffnen des Schlauchs 14 wird der Kolben 16 über eine Druckfeder 18 in seine Ausgangsstellung zurückbewegt.Fig. 2 shows a pinch valve 13, which at the outlet of the Cartridge 1 is provided. The hose pinch valve 13 consists of a Hose 14, to which a valve body 15 is assigned. The valve body 15 comprises the hose 14 and contains a piston 16 with which the hose is squeezed can be. Via a compressed air connection 17, which can be controlled by the valve 12, the piston 16 is moved until the hose 14 is closed. To the Opening the hose 14, the piston 16 is in its via a compression spring 18 Moved back to the starting position.

Fig. 3 zeigt am unteren Ende der Kartusche 1 ein Drehventil 19, das an der Austrittsöffnung 20 der Kartusche 1 vorgesehen ist. Der Ventilkörper 21 weist einen Dreheinsatz 22 auf, der ähnliche Öffnungen 23 wie die Austrittsöffnungen 20 aufweist. Durch Verdrehen um etwa 90° Grad läßt sich der Dreheinsatz 22 in eine geschlossene Stellung verdrehen, wie gezeichnet, oder in eine zweite Stellung, bei der die Austrittsöffnungen 20 und die Öffnungen 23 des Dreheinsatzes 22 übereinstimmen, so daß Farbe austreten kann. Die Steuerung selbst kann z. B. über einen nicht dargestellten Pneumatikzylinder erfolgen, der mit dem Dreheinsatz 22 gekoppelt ist. Fig. 3 shows at the lower end of the cartridge 1, a rotary valve 19 which at the Outlet opening 20 of the cartridge 1 is provided. The valve body 21 has one Rotary insert 22, which has openings 23 similar to the outlet openings 20 having. By turning through about 90 °, the rotating insert 22 can be in one turn closed position, as drawn, or to a second position, at which the outlet openings 20 and the openings 23 of the rotary insert 22nd match so that color can leak out. The controller itself can e.g. B. about a pneumatic cylinder, not shown, take place with the rotary insert 22nd is coupled.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

11
Kartuschecartridge
22nd
Halterungbracket
33rd
DichtplatteSealing plate
44th
DruckluftanschlußCompressed air connection
55
KartuschenkolbenCartridge piston
66
Sensorsensor
77
KartuschenventilCartridge valve
88th
HubeinrichtungLifting device
99
DruckluftanschlußCompressed air connection
1010th
HubplatteLifting plate
1111
VentilValve
1212th
VentilValve
1313
SchlauchquetschventilPinch valve
1414
Schlauchtube
1515
VentilkörperValve body
1616
Kolbenpiston
1717th
DruckluftanschlagCompressed air stop
1818th
DruckfederCompression spring
1919th
DrehventilRotary valve
2020th
AustrittsöffnungOutlet opening
2121
VentilkörperValve body
2222
DreheinsatzTurning insert
2323
Öffnungopening

Claims (6)

Verfahren zum Zuführen von Druckfarbe im Farbwerk von Druckmaschinen mit einem Farbkasten dem zum dosierten Befüllen eine Kartusche in einer Halterung zugeordnet ist, die einen verschiebbaren Kartuschenkolben aufweist, der zum Auspressen pneumatisch beaufschlagt wird und die am anderen Ende eine verschließbare Austrittsöffnung aufweist,
dadurch gekennzeichnet, daß die Kartusche (1) mit einem pneumatischen Arbeitsdruck beaufschlagt wird, daß die Stellung des Kartuschenkolbens (5) ermittelt wird, daß das Kartuschenventil (7) geöffnet wird, daß der Kartuschenkolben (5) in eine voreingestellte Soll-Position verfahren wird
und daß bei Erreichen dieser Position das Kartuschenventil (7) geschlossen wird. Method for supplying printing ink in the inking unit of printing presses with an ink fountain to which a cartridge in a holder is assigned for metered filling, which has a displaceable cartridge piston which is pneumatically actuated for squeezing and which has a closable outlet opening at the other end,
characterized, that the cartridge (1) is subjected to a pneumatic working pressure, that the position of the cartridge piston (5) is determined, that the cartridge valve (7) is opened, that the cartridge piston (5) is moved into a preset desired position
and that the cartridge valve (7) is closed when this position is reached. Vorrichtung zum Zuführen von Druckfarbe im Farbwerk von Druckmaschinen mit einem Farbkasten, dem zum dosierten Befüllen eine Kartusche in einer Halterung zugeordnet ist, die einen verschiebbaren Kartuschenkolben aufweist, der zum Auspressen pneumatisch beaufschlagt wird und die am anderen Ende eine verschließbare Austrittsöffnung aufweist,
dadurch gekennzeichnet, daß die Halterung (2) der Kartusche (1) einen steuerbaren Pneumatikanschluß (4) aufweist, daß an der Halterung (2) ein bei Druckbeaufschlagung der Kartusche (1) geschlossenes Ventil (7, 13, 19) angeordnet ist, daß im oberen Teil der Halterung (2) ein Abstandsensor (6) zur Ermittlung der Stellung des Kartuschenkolbens (5) vorgesehen ist,
und daß pneumatische Stellmittel zum Öffnen des Kartuschenventils (7, 13, 19) vorgesehen sind, wobei die Druckbeaufschlagung der Kartusche und der Stellmittel getrennt erfolgt. Device for supplying printing ink in the inking unit of printing presses with an ink fountain, to which a cartridge in a holder is assigned for metered filling, which has a displaceable cartridge piston which is pneumatically actuated for squeezing and which has a closable outlet opening at the other end,
characterized, that the holder (2) of the cartridge (1) has a controllable pneumatic connection (4), that a valve (7, 13, 19) which is closed when the cartridge (1) is pressurized is arranged on the holder (2), that a distance sensor (6) for determining the position of the cartridge piston (5) is provided in the upper part of the holder (2),
and that pneumatic actuating means are provided for opening the cartridge valve (7, 13, 19), the pressurization of the cartridge and the actuating means taking place separately. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, daß der Abstandsensor (6) als Ultraschallsensor ausgebildet ist. Device according to claim 2,
characterized, that the distance sensor (6) is designed as an ultrasonic sensor. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, daß das Kartuschenventil (7) als Hubventil ausgebildet ist, das über Druckbeaufschlagung steuerbar ist. Device according to claim 2,
characterized, that the cartridge valve (7) is designed as a lift valve which can be controlled via pressurization. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, daß das Kartuschenventil als Schlauchquetschventil (13) ausgebildet ist, das über Druckbeaufschlagung steuerbar ist. Device according to claim 2,
characterized, that the cartridge valve is designed as a pinch valve (13) which can be controlled by pressurization. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, daß das Kartuschenventil als Drehventil (19) ausgebildet ist, das über einen Pneumatikzylinder steuerbar ist. Device according to claim 2,
characterized, that the cartridge valve is designed as a rotary valve (19) which can be controlled via a pneumatic cylinder.
EP98122140A 1997-12-20 1998-11-25 Method and device for dispensing ink in the inking unit of printing machines Expired - Lifetime EP0924071B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19757161A DE19757161A1 (en) 1997-12-20 1997-12-20 Method and device for feeding printing ink in the inking unit of printing machines
DE19757161 1997-12-20

Publications (2)

Publication Number Publication Date
EP0924071A1 true EP0924071A1 (en) 1999-06-23
EP0924071B1 EP0924071B1 (en) 2002-04-03

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Country Link
US (1) US5974971A (en)
EP (1) EP0924071B1 (en)
JP (1) JP4612127B2 (en)
DE (2) DE19757161A1 (en)

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WO2002028641A1 (en) * 2000-10-02 2002-04-11 Sonoco Development, Inc. Ink cartridge valve system
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US6477956B1 (en) * 2001-08-10 2002-11-12 Sonoco Development, Inc. Ink cartridge with self-closing valve
US6612173B2 (en) * 2001-12-12 2003-09-02 Sonoco Development, Inc. Stepped plunger for use with an ultrasonic sensor
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ITMI20040883A1 (en) * 2004-05-03 2004-08-03 Tgc Srl INK FEED CARTRIDGE TO A PRINTER OF A PRINTING MACHINE AND FILLING DEVICE OF THE CARTRIDGE
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JP4612127B2 (en) 2011-01-12
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DE59803608D1 (en) 2002-05-08
JPH11240138A (en) 1999-09-07
EP0924071B1 (en) 2002-04-03

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