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EP0116893B1 - Inking device with rollers for a printing press - Google Patents

Inking device with rollers for a printing press Download PDF

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Publication number
EP0116893B1
EP0116893B1 EP84101270A EP84101270A EP0116893B1 EP 0116893 B1 EP0116893 B1 EP 0116893B1 EP 84101270 A EP84101270 A EP 84101270A EP 84101270 A EP84101270 A EP 84101270A EP 0116893 B1 EP0116893 B1 EP 0116893B1
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EP
European Patent Office
Prior art keywords
roller
inking
mechanism according
ink
nozzle
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
Application number
EP84101270A
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German (de)
French (fr)
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EP0116893A3 (en
EP0116893A2 (en
Inventor
Gianfranco Gibellino
Mario Forno
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.)
Officine Meccaniche Giovanni Cerutti SpA
Original Assignee
Officine Meccaniche Giovanni Cerutti SpA
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.)
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Publication of EP0116893A2 publication Critical patent/EP0116893A2/en
Publication of EP0116893A3 publication Critical patent/EP0116893A3/en
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Publication of EP0116893B1 publication Critical patent/EP0116893B1/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
    • B41F31/28—Spray apparatus

Definitions

  • the above invention relates to a roll ink application device for a printing press, according to the preamble of claim 1 (US-A-3 046 885).
  • a rotating ink application roller is provided for ink application in printing machines, particularly in rotogravure printing machines, which takes the ink to be applied from an assigned ink container and applies it to the rotating printing cylinder.
  • DE-B-1 611 239 describes a dampening unit which is assigned to a rotary printing press which works in the wet offset process.
  • a tube equipped with nozzles is provided, which sprays a water-air mixture onto the fabric cover of a carrier roller. This is not a paint application device, for this reason the task and solution differ from the above invention.
  • the object of the above invention is to propose a new roller ink application device with which the disadvantages of the prior art can be avoided, which enables the ink application to be set and adjusted quickly, both in the clockwise direction of rotation and in the counterclockwise direction of the printing cylinder, with one Receiving container for the printing ink can be dispensed with, which leads to a significantly smaller amount of ink in circulation. This leads to a lower volatilization of the contained solvents, as well as to an easier air conditioning option for the printing ink.
  • Another possibility of the invention is to apply the printing ink optionally with a very uniform amount over the entire length of the inking roller, using simple means, with which the amount of ink supplied to the printing cylinder and the pressure with which the inking roller is added presses against the pressure cylinder, is adjustable.
  • Another possibility of the invention is to use simple and functional means for differentiated dosing of the amount of ink to be applied in the longitudinal direction of the printing cylinder, in accordance with the different print images. Furthermore, the invention enables the device to be designed in such a way that the inking device, together with the inking roller, can be adapted to different diameters of the printing cylinder.
  • the two lines which can be shut off are advantageously connected to a common main line for the ink supply.
  • the ink application device which is identified overall by 1, consists of a printing cylinder 2 which can be driven in two directions of rotation (f) or (g).
  • a conventional inking roller 3 is provided, but which works without the provision of an ink container.
  • the inking roller 3 can be pressed against the printing cylinder 2 with the desired contact pressure P.
  • suitable means e.g. B. springs 4, pneumatic or hydraulic working cylinders
  • an inking nozzle 5 or 6 On both longitudinal sides of the printing cylinder 2 and the inking roller 3, an inking nozzle 5 or 6 according to the invention is provided, which has the shape of a beak 7 or 8 on the side facing the cylinder 2 and the roller 3. On the back, each nozzle 5, 6 merges into a tubular extension, which forms a collector-like chamber 9 and 10, respectively.
  • Each chamber 9 or 10 is connected to a supply pipe 11, 12 which, if necessary, is designed as a flexible hose.
  • Each supply pipe 11, 12 has a shut-off valve 13 or 14, with which the paint stream supplied through the main line 15 can be interrupted.
  • the ink flow can be supplied either to the chamber 9 or to the chamber 10 of the paint application nozzles 5 or 6, which makes it possible to easily supply the paint in the clockwise or counterclockwise direction (arrows f and g, Fig. 1) to adjust the pressure cylinder 2.
  • the main line 15 is advantageously connected to a pump 16, the rotary drive 17 of which is connected via a drive element 18 to a pulley or a drive wheel 19 which is driven at the same speed as the pressure cylinder 2.
  • a pump 16 the rotary drive 17 of which is connected via a drive element 18 to a pulley or a drive wheel 19 which is driven at the same speed as the pressure cylinder 2.
  • the pump 16 can also be driven by an electric motor 17, the speed of which can advantageously be controlled in a controllable manner.
  • the pump 16 has, in a known manner, a suction pipe 20 for drawing in the paint, e.g. B. from a container, not shown.
  • the arm 21 can be pivoted upwards or downwards, as indicated by the arrow (1).
  • threaded spindle 25 can also be replaced by a toothed rack, a piston rod of a preumatic cylinder or a similar actuating means. Furthermore, it is advantageous to mount the component 25 ', which receives the spindle 25, resiliently.
  • the supply pipes 11 and 12, as well as the main line 15 are designed as flexible pipes, in order to allow the free movement during the setting process of the nozzles 5, 6 and the levers 21, 22 do not influence.
  • each nozzle 5 or 6 is designed as a slot nozzle, and the corresponding nozzle slot 27, from which the ink emerges, is directed onto the inking roller 3 and the printing cylinder 2.
  • the width (a) of the slot 27 corresponds approximately to values of 1-10 mm.
  • the blocking means 30 are advantageously, as can be seen in FIG. 4, in the form of small, somewhat wedge-shaped cuboids, which are operatively connected to a corresponding actuating rod 31, which is supported in the interior of the chamber 9 or 10 by small supports 32, and have actuating buttons at their ends.
  • these drive rods 31 can also with automatically driven actuating means, for. B. electromagnetic devices, pneumatics cylinders or similar devices.
  • the shut-off valve 13 or 14 is opened in order to enable the ink flow in the direction of the slot nozzle 5 or 6.
  • the pressure P of the paint roller 3 is regulated by means of actuating means known per se.
  • the pump 16 is driven in accordance with the speed of the printing cylinder 2 and the associated drive pulley 19, as a result of which the speed of the quantity of paint supplied through the line 15 is regulated.
  • Adjustable valves which are not shown, can be provided between the main line 15 for the ink supply and the pump 16.
  • the paint supplied reaches the corresponding nozzle 5 or 6 and, via the corresponding beak-shaped extensions 7 and 8, which form the nozzle slot 27, the paint is supplied in the form of a finely metered jet or in the form of a paint mist.
  • the position of the ink nozzles 5 and 6 must be adjusted accordingly in relation to the variable diameter of the cylinder 2, and the inking roller 3 must be displaced at the same time.
  • shut-off means 30 By opening all of the outlets 29 of the corresponding slots 27, i. H. by completely extending the shut-off means 30 from the openings 29, a uniform, maximum ink application takes place over the entire length of the printing cylinder. If individual sections of the printing cylinder 2 are to be excluded from the ink application, it is sufficient to move the corresponding shut-off means 30 as shown in FIG. 4; in this case the corresponding opening 29 is completely blocked off.
  • the shut-off means 30 can also assume intermediate positions. This enables an ideal metering of the ink supply, differentiated over the entire length of the printing cylinder 2. It can be taken into account that larger or smaller amounts of ink must be adjusted in accordance with different print images of the paper tape to be printed.

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

Description

"Rollenfarbauftragsvorrichtung für eine Druckmaschine""Roll ink application device for a printing press"

Die vorstehende Erfindung betrifft eine Rollenfarbauftragsvorrichtung für eine Druckmaschine, gemäss dem Oberbegriff des Anspruchs 1 (US-A-3 046 885).The above invention relates to a roll ink application device for a printing press, according to the preamble of claim 1 (US-A-3 046 885).

Es ist bekannt, dass in Druckmaschinen, besonders in Tiefdruckrotationsmaschinen, zum Farbauftrag eine sich drehende Farbauftragsrolle vorgesehen ist, die die aufzutragende Farbe aus einen zugeordneten Farbbehälter entnimmt und diese auf den rotierenden Druckzylinder aufträgt.It is known that a rotating ink application roller is provided for ink application in printing machines, particularly in rotogravure printing machines, which takes the ink to be applied from an assigned ink container and applies it to the rotating printing cylinder.

Es ist auch bekannt, dass zum Erreichen eines qualitativ hochwertigen Druckergebnisses sichergestellt sein muss, dass die aufzutragende Farbe eine bestimmte Optimaltemperatur aufweisen muss, um eine Gleichmässigkeit im Farbton zu erzielen und ein Druckbild zu liefern, dass gleichmässige und einheitliche chromatische Weite aufweist.It is also known that in order to achieve a high-quality print result, it must be ensured that the color to be applied must have a certain optimum temperature in order to achieve a uniform tone and to deliver a print image that has a uniform and uniform chromatic width.

In bekannten Farbauftragseinrichtungen ist es aber, besonders während des Stillstandes der Druckmaschine unumgänglich, Vorrichtungen vorzusehen, mit denen z. B. eine Farbanhäufung vermeidbar ist. Ferner bedingt der unumgängliche Farbaufnahmebehälter wiederholte Reinigungsarbeiten. Dies führt zu aufwendigen Instandhaltungsarbeiten, die zusätzlich das Einstellen der bekannten Rollenfarbauftragsvorrichtungen wesentlich erschweren.In known ink application devices, however, it is essential, especially when the printing press is at a standstill, to provide devices with which, for. B. an accumulation of color is avoidable. Furthermore, the inevitable ink container requires repeated cleaning work. This leads to complex maintenance work, which additionally complicates the setting of the known roller paint application devices.

Aus der US-A-3 046 885 ist eine Farbauftragsvorrichtung bekannt geworden, mit der durch schnabelförmige Verlängerungen Druckfarbe entweder bei Rechtslauf oder bei Linkslauf der Vorrichtung zugeführt werden kann. Bei dieser Vorrichtung erfolgt die Farbzufuhr über zahlreiche, einzelne Zufuhrleitungen und es besteht nicht die Möglichkeit den Farbaustritt über die Breitenerstreckung der Vorrichtung einzustellen und nach Bedarf zu dosieren. Anstelle einer einzigen Farbzufuhrleitung sind zahlreiche einzelne Leitungen vorgesehen. Dabei müssen unterschiedliche Temperaturverhältnisse in der zugeführten Farbmenge in Kauf genommen werden müssen, schliesslich ist es bei der bekannten Farbzufuhrvorrichtung nicht möglich, genaue Drücke im Materialfluss einzuhalten.From US-A-3 046 885 an ink application device has become known with which printing ink can be supplied to the device either by clockwise or counterclockwise rotation by means of beak-shaped extensions. In this device, the ink is supplied via numerous, individual supply lines and there is no possibility of adjusting the ink outlet over the width of the device and metering it as required. Instead of a single ink supply line, numerous individual lines are provided. Different temperature conditions in the amount of ink supplied must be accepted, since it is not possible with the known ink supply device to maintain exact pressures in the material flow.

In der DE-B-1 611 239 wird ein Feuchtwerk beschrieben, das einer Rotationsdruckmaschine, die im Nassoffsetverfahren arbeitet, zugeordnet ist. Dabei ist ein mit Düsen bestücktes Rohr vorgesehen, das auf den Stoffbezug einer Autragswalze ein Wasser-Luftgemisch aufsprüht. Es handelt sich hierbei nicht um eine Farbauftragsvorrichtung, schon aus diesem Grunde weichen Aufgabenstellung und Lösung von der vorstehenden Erfindung ab.DE-B-1 611 239 describes a dampening unit which is assigned to a rotary printing press which works in the wet offset process. A tube equipped with nozzles is provided, which sprays a water-air mixture onto the fabric cover of a carrier roller. This is not a paint application device, for this reason the task and solution differ from the above invention.

Aus der FR-A-788 082 ist eine Farbauftragsvorrichtung für Druckmaschinen zu entnehmen, in der der Austrittsspalt der Schlitzdüse durch ein Verschlussblech mittels aussenliegenden Stellschrauben veränderbar ist. Eine derartige Einstellung der Farbzufuhr hat sich als ungenau erwiesen und ermöglicht keine Feindosierung, wie sie heute in Farbauftragsvorrichtungen für moderne Druckmaschinen gefordert wird.From FR-A-788 082 an ink application device for printing presses can be found, in which the outlet gap of the slot nozzle can be changed by means of a closing plate by means of external adjusting screws. Such an adjustment of the ink supply has proven to be inaccurate and does not allow the fine metering that is required today in ink application devices for modern printing machines.

Desweiteren besteht bei dieser bekannten Einrichtung keine Möglichkeit sich an unterschiedliche Drehrichtungen der Farbauftragszylinder (Linkslauf, Rechtslauf) anzupassen.Furthermore, in this known device there is no possibility to adapt to different directions of rotation of the ink application cylinders (counterclockwise, clockwise).

Aufgabe der vorstehenden Erfindung ist es, eine neue Rollenfarbauftragsvorrichtung vorzuschlagen, mit der die Nachteile des Standes der Technik vermieden werden können, welche ein rasches Einstellen und Anpassen des Farbauftrages, sowohl bei Drehrichtung im Uhrzeigersinn, als auch im Gegenuhrzeigersinn des Druckzylinders ermöglicht, wobei auf einen Aufnahmebehälter für die Druckfarbe verzichtet werden kann, was zu einer wesentlich geringeren im Umlauf befindlichen Farbmenge führt. Dies führt zu einer geringeren Verflüchtigung der enthaltenen Lösungsmittel, sowie zu einer einfacheren Klimatisierungsmöglichkeit der Druckfarbe. Eine weitere Möglichkeit der Erfindung besteht darin, die Druckfarbe wahlweise mit sehr gleichmässiger Menge über die gesamte Länge der Farbauftragsrolle verteilt aufzutragen, dies unter Verwendung einfacher Mittel, mit denen zusätzlich die Menge der an den Druckzylinder zugeführten Druckfarbe als auch der Druck, mit dem die Farbauftragsrolle gegen den Druckzylinder drückt, einstellbar ist.The object of the above invention is to propose a new roller ink application device with which the disadvantages of the prior art can be avoided, which enables the ink application to be set and adjusted quickly, both in the clockwise direction of rotation and in the counterclockwise direction of the printing cylinder, with one Receiving container for the printing ink can be dispensed with, which leads to a significantly smaller amount of ink in circulation. This leads to a lower volatilization of the contained solvents, as well as to an easier air conditioning option for the printing ink. Another possibility of the invention is to apply the printing ink optionally with a very uniform amount over the entire length of the inking roller, using simple means, with which the amount of ink supplied to the printing cylinder and the pressure with which the inking roller is added presses against the pressure cylinder, is adjustable.

Eine weitere Möglichkeit der Erfindung besteht darin, einfache und funktionstüchtige Mittel zum differenzierten Dosieren der aufzutragenden Farbmenge in Längsrichtung des Druckzylinders, entsprechend den unterschiedlichen Druckbildern einzusetzen. Desweiteren ermöglicht die Erfindung die Vorrichtung so auszubilden, dass die Farbauftragsvorrichtung zusammen mit der Farbauftragswalze an unterschiedliche Durchmesser des Druckzylinders anzupassen.Another possibility of the invention is to use simple and functional means for differentiated dosing of the amount of ink to be applied in the longitudinal direction of the printing cylinder, in accordance with the different print images. Furthermore, the invention enables the device to be designed in such a way that the inking device, together with the inking roller, can be adapted to different diameters of the printing cylinder.

Die Aufgabe wird durch die Merkmale des kennzeichenden Teils des Anspruchs 1 gelöst.The object is achieved by the features of the characterizing part of claim 1.

In vorteilhafter Weise sind die beiden absperrbaren Leitungen mit einer gemeinsamen Hauptleitung für die Farbzufuhr verbunden.The two lines which can be shut off are advantageously connected to a common main line for the ink supply.

Es hat sich ferner als vorteilhaft erwiesen, die Schlitzdüsen für den Farbauftrag einstellbar auf einem Schwenkhebel anzuordnen, der gleichzeitig die Farbauftragsrolle trägt, wobei vorgesehen ist, dass ein Teil des schwenkbaren Hebels mit einer Verstellvorrichtung wirkverbunden ist.It has also proven to be advantageous to arrange the slot nozzles for the paint application in an adjustable manner on a swivel lever which at the same time carries the paint application roller, it being provided that part of the swivel lever is operatively connected to an adjusting device.

Weitere Vorteile können der nun folgenden Beschreibung, den Unteransprüchen und den beigefügten Zeichnungen entnommen werden.Further advantages can be found in the following description, the subclaims and the accompanying drawings.

Der Erfindungsgegenstand wird nun anhand eines Ausführungsbeispieles genauer beschrieben und in den Zeichnungen dargestellt:

  • Fig. 1 zeigt schematisch einen Druckzylinder, sowie eine zugeordnete Farbauftragswalze einer Tiefdruckrotationsmaschine in Verbindung mit den erfindungsgemäss ausgebildeten Schlitzdüsen.
  • Fig. 2 zeigt schematisch die Farbauftragsdüse, die zusammen mit der Farbauftragswalze auf einem schwenkbaren Hebel angeordnet sind.
  • Fig. 3 zeigt ein Detail der Farbauftragsdüse in Ansicht, gemäss Pfeil 1 der Fig. 4.
  • fig.4 zeigt schematisch einen Schnitt durch die erfindungsgemässe Farbauftragsdüse, entlang der Linie 11 - 11 der Fig. 3.
The subject of the invention will now be described in more detail using an exemplary embodiment and shown in the drawings:
  • 1 schematically shows a printing cylinder and an associated inking roller of a rotogravure printing press in connection with the slit nozzles designed according to the invention.
  • Fig. 2 shows schematically the ink application nozzle, which are arranged together with the ink application roller on a pivotable lever.
  • FIG. 3 shows a detail of the paint application nozzle in view, according to arrow 1 of FIG. 4.
  • 4 shows schematically a section through the paint application nozzle according to the invention, along the line 11-11 of FIG. 3.

Wie der Fig. 1 zu entnehmen ist, besteht die Farbauftragsvorrichtung, die gesamthaft mit 1 gekennzeichnet ist, aus einem Druckzylinder 2, der in zwei Drehrichtungen (f) bzw. (g) antreibbar ist.As can be seen from FIG. 1, the ink application device, which is identified overall by 1, consists of a printing cylinder 2 which can be driven in two directions of rotation (f) or (g).

Unter dem Druckzylinder 2, parallel zu diesem, ist eine übliche Farbauftragswalze 3 vorgesehen, die aber ohne Vorsehung eines Farbbehälters arbeitet.Under the printing cylinder 2, parallel to this, a conventional inking roller 3 is provided, but which works without the provision of an ink container.

Unter Zuhilfenahme geeigneter Mittel, z. B. Federn 4, pneumatischen oder hydraulischen Arbeitszylindern, kann die Farbauftragsrolle 3 mit gewünschtem Anpressdruck P gegen den Druckzylinder 2 gepresst werden.With the help of suitable means, e.g. B. springs 4, pneumatic or hydraulic working cylinders, the inking roller 3 can be pressed against the printing cylinder 2 with the desired contact pressure P.

Auf beiden Längsseiten des Druckzylinders 2, sowie der Farbauftragswalze 3, ist jeweils eine erfindungsgemässe Farbaufragsdüse 5 bzw. 6 vorgesehen, die auf der zum Zylinder 2 und zur Rolle 3 hin gerechteten Seite Form eines Schnabels 7 bzw. 8 aufweist. Auf der Rückseite geht jede Düse 5, 6 in eine rohrförmige Erweiterung über, die eine kollektorartige Kammer 9 bzw. 10 bildet.On both longitudinal sides of the printing cylinder 2 and the inking roller 3, an inking nozzle 5 or 6 according to the invention is provided, which has the shape of a beak 7 or 8 on the side facing the cylinder 2 and the roller 3. On the back, each nozzle 5, 6 merges into a tubular extension, which forms a collector-like chamber 9 and 10, respectively.

Jede Kammer 9 bzw. 10 steht mit einem Versorgungsrohr 11, 12, die im Bedarfsfall als flexibler Schlauch ausgebildet ist, in Verbindung. Jedes Versorgungsrohr 11, 12 weist einen Absperrhahn 13 bzw. 14 auf, mit dem der durch die Hauptleitung 15 angelieferte Farbstrom unterbrochen werden kann.Each chamber 9 or 10 is connected to a supply pipe 11, 12 which, if necessary, is designed as a flexible hose. Each supply pipe 11, 12 has a shut-off valve 13 or 14, with which the paint stream supplied through the main line 15 can be interrupted.

Somit kann der Farbfluss wahlweise der Kammer 9 oder aber der Kammer 10 der Farbauftragsdüsen 5 bzw. 6 zugeleitet werden, wodurch es auf einfache Weise möglich ist, die Farbzufuhr an die Drehrichtung im Uhrzeigersinn oder im Gegenuhrzeigersinn (Pfeile f und g, Fig. 1) des Druckzylinders 2 anzupassen.Thus, the ink flow can be supplied either to the chamber 9 or to the chamber 10 of the paint application nozzles 5 or 6, which makes it possible to easily supply the paint in the clockwise or counterclockwise direction (arrows f and g, Fig. 1) to adjust the pressure cylinder 2.

In vorteilhafter Weise steht die Hauptleitung 15 mit einer Pumpe 16 in Verbindung, deren Drehantrieb 17 über ein Antriebsorgan 18 mit einer Riemenscheibe oder einem Antriebsrad 19 verbunden ist, das mit der gleichen Geschwindigkeit wie der Druckzylinder 2 angetrieben wird. Somit, unter Vorsehung eines einfachen Bauteiles, wird es möglich, die Förderleistung der Pumpe und somit den Farbauftrag in Abhängigkeit von der Drehgeschwindigkeit des Druckzylinders 2 zu verändern. Es ist naheliegend, dass die Pumpe 16 auch durch einen Elektromotor 17, dessen Drehzahl in vorteilhafter Weise steuerbar veränderbar ist, angetrieben werden kann.The main line 15 is advantageously connected to a pump 16, the rotary drive 17 of which is connected via a drive element 18 to a pulley or a drive wheel 19 which is driven at the same speed as the pressure cylinder 2. Thus, with the provision of a simple component, it becomes possible to change the delivery capacity of the pump and thus the ink application depending on the speed of rotation of the printing cylinder 2. It is obvious that the pump 16 can also be driven by an electric motor 17, the speed of which can advantageously be controlled in a controllable manner.

Die Pumpe 16 weist in bekannter Weise ein Saugrohr 20 zum Ansaugen der Farbe, z. B. aus einem nicht dargestellten Behälter auf.The pump 16 has, in a known manner, a suction pipe 20 for drawing in the paint, e.g. B. from a container, not shown.

Berücksichtigt man, dass Druckzylinder 2 Verwendung finden, deren Durchmesser von einem grössten Durchmesser (D) zu einem kleinsten Durchmesser (d) variieren, so erweist es sich als besonders vorteilhaft, die Farbauftragsrolle drehbar in der Mitte eines Armes 21 anzuordnen, der Bestandteil eines Schwenkhebels 22 ist. Der Hebel 21 trägt ferner verschiebbar, wie durch die Pfeile (h) angedeutet, die Farbauftragsdüse 5 und 6. Ferner geht der Arm 21 in einen zweiten Arm 23 über und bildet den Schwenkhebel 22, der in seiner Gesamtheit um den Querbolzen 24 schwenkbar ist.If one takes into account that printing cylinders 2 are used whose diameters vary from a largest diameter (D) to a smallest diameter (d), it proves to be particularly advantageous to arrange the inking roller rotatably in the middle of an arm 21, which is part of a pivoting lever 22 is. The lever 21 also slidably carries, as indicated by the arrows (h), the paint application nozzle 5 and 6. Furthermore, the arm 21 merges into a second arm 23 and forms the pivot lever 22, which is pivotable in its entirety about the cross pin 24.

Mit dem freien Ende des Hebels 23 ist eine Gewindespindel 25 wirkverbunden, die ein Antriebsrad 26 aufweist. Bei Verdrehen der Gewindespindel 25 wird ein Verschwenken des Armes 21 nach oben oder nach unten, wie dies durch den Pfeil (1) angedeutet ist, ermöglicht. Somit besteht die Möglichkeit, die Farbauftragsrolle 3 gemeinsam mit den Farbauftragsdüsen 5 und 6, entsprechend den unterschiedlichen Durchmessern (D, d) des Druckzylinders 2 zu verschwenken und zu justieren.A threaded spindle 25, which has a drive wheel 26, is operatively connected to the free end of the lever 23. When the threaded spindle 25 is rotated, the arm 21 can be pivoted upwards or downwards, as indicated by the arrow (1). There is thus the possibility of pivoting and adjusting the inking roller 3 together with the inking nozzles 5 and 6 in accordance with the different diameters (D, d) of the printing cylinder 2.

Selbstverständlich kann die Gewindespindel 25 auch durch eine Zahnstange, eine Kolbenstange eines preumatischen Zylinders oder eines ähnlichen Stellmittels ersetzt werden. Ferner ist es vorteilhaft, das Bauteil 25', das die Spindel 25 aufnimmt, federnd zu lagern.Of course, the threaded spindle 25 can also be replaced by a toothed rack, a piston rod of a preumatic cylinder or a similar actuating means. Furthermore, it is advantageous to mount the component 25 ', which receives the spindle 25, resiliently.

Für die in Fig. 2 dargestellte Ausführungsform ist es vorteilhaft, wenn die Versorgungsrohre 11 und 12, sowie die Hauptleitung 15 als flexible Rohrleitungen ausgebildet sind, um somit die freie Beweglichkeit während des Einstellvorganges der Düsen 5, 6, sowie der Hebel 21, 22 zu nicht beinflussen.For the embodiment shown in FIG. 2, it is advantageous if the supply pipes 11 and 12, as well as the main line 15 are designed as flexible pipes, in order to allow the free movement during the setting process of the nozzles 5, 6 and the levers 21, 22 do not influence.

Wie der Fig. 3 zu entnehmen ist, ist jede Düse 5 bzw. 6 als Schlitzdüse ausgebildet, und der entsprechende Düsenschlitz 27, aus dem die Farbe austritt, ist auf die Farbauftragsrolle 3, sowie den Druckzylinder 2 gerichtet.As can be seen in FIG. 3, each nozzle 5 or 6 is designed as a slot nozzle, and the corresponding nozzle slot 27, from which the ink emerges, is directed onto the inking roller 3 and the printing cylinder 2.

Die Breite (a) des Schlitzes 27 entspricht ungefähr Werten von 1 - 10 mm.The width (a) of the slot 27 corresponds approximately to values of 1-10 mm.

Es hat sich als besonders vorteilhaft erwiesen, den Schlitz 27 durch dünne, vertikal angeordnete Trennwände 28 in Längsrichtung aufzuteilen, um somit Öffnungen 29 festzulegen, denen verstellbare Absperrmittel 30 zugeordnet sind.It has proven to be particularly advantageous to divide the slot 27 in the longitudinal direction by thin, vertically arranged partition walls 28, in order to thus define openings 29 to which adjustable shut-off means 30 are assigned.

Somit wird es möglich, diese Öffnungen 29 ganz zu versperren, teilweise oder vollständig zu öffnen, wodurch ein Einstellen und Regeln des Farbflusses in Richtung der Farbauftragsrolle 3 und somit zum Druckzylinder 2 erfolgt.This makes it possible to completely block these openings 29, partially or completely open them, as a result of which the ink flow is adjusted and regulated in the direction of the ink application roller 3 and thus towards the printing cylinder 2.

Die Absperrmittel 30 sind in vorteilhafter Weise, wie dies Fig. 4 zu entnehmen ist, als kleine etwas keilförmige Quader ausgebildet, die mit einer entsprechenden Betätigungstange 31 wirkverbunden sind, die im Inneren der Kammer 9, bzw. 10 durch kleine Supporte 32 gelagert ist, und an ihren Enden Betätigungsknöpfe aufweisen. Selbstverständlich können diese Antriebsstangen 31 auch mit automatisch angetriebenen Betätigungsmitteln, z. B. elektromagnetischen Einrichtungen, Pneumatikzylindern oder ähnlichen Vorrichtungen verbunden sein.The blocking means 30 are advantageously, as can be seen in FIG. 4, in the form of small, somewhat wedge-shaped cuboids, which are operatively connected to a corresponding actuating rod 31, which is supported in the interior of the chamber 9 or 10 by small supports 32, and have actuating buttons at their ends. Of course, these drive rods 31 can also with automatically driven actuating means, for. B. electromagnetic devices, pneumatics cylinders or similar devices.

Die Arbeitsweise der erfindungsgemässen Vorrichtung ist folgende:The operation of the device according to the invention is as follows:

Entsprechend dem Drehsinn (f, g) des Druckzylinders 2 wird das Absperrventil 13, bzw. 14 geöffnet, um den Farbfluss in Richtung der Schlitzdüse 5 oder 6 zu ermöglichen. Durch an sich gekannte Stellmittel wird der Druck P der Farbrolle 3 eingeregelt. Entsprechend der Drehzahl des Druckzylinders 2, sowie der zugeordneten Antriebsscheibe 19 erfolgt der Antrieb der Pumpe 16, wodurch -drehzahlabhängig die Menge der durch die Leitung 15 zugeführten Farbe geregelt wird. Zwischen der Hauptleitung 15 für die Farbzufuhr und der Pumpe 16 können einstellbare Ventile, die nicht dargestellt sind, vorgesehen sein.In accordance with the direction of rotation (f, g) of the pressure cylinder 2, the shut-off valve 13 or 14 is opened in order to enable the ink flow in the direction of the slot nozzle 5 or 6. The pressure P of the paint roller 3 is regulated by means of actuating means known per se. The pump 16 is driven in accordance with the speed of the printing cylinder 2 and the associated drive pulley 19, as a result of which the speed of the quantity of paint supplied through the line 15 is regulated. Adjustable valves, which are not shown, can be provided between the main line 15 for the ink supply and the pump 16.

Die zugeführte Farbe erreicht die entsprechende Düse 5 bzw. 6 und, über die entsprechenden schnabelförmigen Verlängerungen 7 und 8, die den Düsenschlitz 27 bilden, erfolgt die Zufuhr der Farbe in Form eines fein dosierten Strahles oder in Form eines Farbnebels.The paint supplied reaches the corresponding nozzle 5 or 6 and, via the corresponding beak-shaped extensions 7 and 8, which form the nozzle slot 27, the paint is supplied in the form of a finely metered jet or in the form of a paint mist.

Da ein Anpassen an verschiedene Durchmesser (D, d) des Druckzylinders 2 erforderlich ist, bedarf es einer entsprechenden Einstellung der Lage der Farbdüsen 5 bzw. 6 gegenüber dem veränderlichen Durchmessers des Zylinders 2, gleichzeitig ist die Farbauftragsrolle 3 zu verschieben.Since an adaptation to different diameters (D, d) of the printing cylinder 2 is required, the position of the ink nozzles 5 and 6 must be adjusted accordingly in relation to the variable diameter of the cylinder 2, and the inking roller 3 must be displaced at the same time.

Durch Öffnen sämtlicher Auslässe 29 der entsprechenden Schlitze 27, d. h. durch völliges Ausfahren der Absperrmittel 30 aus den Offnungen 29, erfolgt über die gesamte Länge des Druckzylinders ein gleichmässiger maximaler Farbauftrag. Sollen einzelne Teilstückes des Druckzylinders 2 vom Farbauftrag ausgeschlossen werden, genügt es, die entsprechenden Absperrmittel 30 wie in Fig. 4 dargestellt zu verschieben; in diesem Fall wird die entsprechende Öffnung 29 vollkommen abgesperrt wird. Das Absperrmittel 30 kann auch Zwischenstellungen einnehmen. Dies ermöglicht eine ideale Dosierung der Farbzufuhr, differenziert über die gesamte Länge des Druckzylinders 2. Dabei kann berücksichtigt werden, dass grössere oder kleinere Farbmengen in Ubereinstimmung mit verschiedenen Druckbildern des zu bedruckenden Papierbandes einzustellen sind.By opening all of the outlets 29 of the corresponding slots 27, i. H. by completely extending the shut-off means 30 from the openings 29, a uniform, maximum ink application takes place over the entire length of the printing cylinder. If individual sections of the printing cylinder 2 are to be excluded from the ink application, it is sufficient to move the corresponding shut-off means 30 as shown in FIG. 4; in this case the corresponding opening 29 is completely blocked off. The shut-off means 30 can also assume intermediate positions. This enables an ideal metering of the ink supply, differentiated over the entire length of the printing cylinder 2. It can be taken into account that larger or smaller amounts of ink must be adjusted in accordance with different print images of the paper tape to be printed.

Claims (8)

1. A roller inking mechanism for a printing machine, more particularly for a rotogravure press, in which axially divided slotted nozzles (5, 6) for the ink supply are provided one on each side and over the entire length of the inking roller (3), each slotted nozzle (5, 6) having a beak shape, each beak (7, 8) being directed towards the inking roller (3), characterised in that on its side remote from the inking roller (3) each beak (7, 8) widens out into a tubular chamber (9) axially parallel to the inking roller (3), each chamber (9, 10) communicates with a supply tube (11, 12) for the printing ink, the slot aperture (27) of each slotted nozzle (5, 6) is divided by thin vertical partitions (28) into separate outflow apertures (27) which are partially or completely closable by closure means (30) movable in the flow direction and each supply tube (11, 12) has its own associated shut-off valve for optional opening or closing of the ink supply in dependence on the direction of rotation (f, g) of the inking roller (3).
2. A roller inking mechanism according to claim 1, characterized in that the width (a) of the aperture (27) of the slot (5, 6) is between 1 and 10 mm.
3. A roller inking mechanism according to claims 1 and 2, characterised in that each shut-off means (30) consists of a cube-like wedge-shaped member operatively connected to a drive rod (31) mounted inside the slotted nozzle (5, 6) and adapted to be actuated from the outside of the nozzle.
4. A roller inking mechanism according to claim 1, characterized in that the slotted nozzles (5, 6) are disposed adjustably (h) on a pivotable lever (21) which rotatably mounts the inking roller (3) between the slotted nozzles (5, 6).
5. A roller inking mechanism according to claim 4, characterized in that the pivotable lever (21) is operatively connected to an actuating mechanism (22).
6. A roller inking mechanism according to claim 5, characterised in thats the actuating mechanism (22) consists of a screw spindle (25) with a handwheel (26) and said screw spindle (25) is operatively connected to a tapped bore provided at the free end of the pivoting lever (23).
7. A roller inking mechanism according to claim 5, characterised in that the screw spindle (25) is received in a mounting (25') movable against the action of a spring in the axial direction of the screw spindle.
8. A roller inking mechanism according to claim 5, characterised in that the actuating mechanism (22) of the pivoting lever (21) is in the form of rack or a piston rod of a working cylinder.
EP84101270A 1983-02-10 1984-02-08 Inking device with rollers for a printing press Expired EP0116893B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19509/83A IT1161611B (en) 1983-02-10 1983-02-10 ROLLER INKING GROUP FOR A PRINTING MACHINE
IT1950983 1983-02-10

Publications (3)

Publication Number Publication Date
EP0116893A2 EP0116893A2 (en) 1984-08-29
EP0116893A3 EP0116893A3 (en) 1985-09-25
EP0116893B1 true EP0116893B1 (en) 1989-10-25

Family

ID=11158630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101270A Expired EP0116893B1 (en) 1983-02-10 1984-02-08 Inking device with rollers for a printing press

Country Status (3)

Country Link
EP (1) EP0116893B1 (en)
DE (1) DE3480279D1 (en)
IT (1) IT1161611B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29805201U1 (en) * 1998-03-23 1998-05-20 MAN Roland Druckmaschinen AG, 63075 Offenbach Anilox inking unit for an offset rotary printing machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6234616B1 (en) 1997-06-17 2001-05-22 Seiko Epson Corporation Mechanism for opening or closing ink supply passage in ink-jet printer
JP3567967B2 (en) * 1997-06-17 2004-09-22 セイコーエプソン株式会社 Opening and closing mechanism of ink supply channel in ink jet printer
DE19860641A1 (en) 1998-12-29 2000-07-06 Koenig & Bauer Ag Ink feed device for an ink fountain pen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB266916A (en) * 1926-03-17 1927-03-10 Victory Kidder Printing Machin Improvements in or relating to means for feeding ink to printing machines
FR788082A (en) * 1935-03-30 1935-10-03 Marinoni Method and device for supplying ink to printing machines
US3046885A (en) * 1960-05-12 1962-07-31 Hoe & Co R Printing machine ink rail
DE1611239B1 (en) * 1967-07-29 1970-04-23 Maschf Augsburg Nuernberg Ag Rotary printing machine that can be driven in two directions of rotation with dampening units that can be used for optional or simultaneous wet offset printing
DE2951651C2 (en) * 1979-12-21 1983-10-20 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Device for the metered application of paint by means of paint nozzles supplied by pumps onto the paint application rollers of an inking unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29805201U1 (en) * 1998-03-23 1998-05-20 MAN Roland Druckmaschinen AG, 63075 Offenbach Anilox inking unit for an offset rotary printing machine

Also Published As

Publication number Publication date
IT1161611B (en) 1987-03-18
EP0116893A3 (en) 1985-09-25
IT8319509A0 (en) 1983-02-10
DE3480279D1 (en) 1989-11-30
EP0116893A2 (en) 1984-08-29

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