EP0538190B1 - Wiping device for a intaglio printing machine - Google Patents
Wiping device for a intaglio printing machine Download PDFInfo
- Publication number
- EP0538190B1 EP0538190B1 EP92810760A EP92810760A EP0538190B1 EP 0538190 B1 EP0538190 B1 EP 0538190B1 EP 92810760 A EP92810760 A EP 92810760A EP 92810760 A EP92810760 A EP 92810760A EP 0538190 B1 EP0538190 B1 EP 0538190B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ink
- doctor blade
- slide
- cylinder
- wall parts
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
- B41F35/008—Cleaning arrangements or devices for doctor blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
- B41F9/08—Wiping mechanisms
- B41F9/16—Removing or recovering ink from wiping mechanisms
Definitions
- the invention relates to a wiping device of an intaglio printing machine with at least one cylinder, to which the ink lifted off the printing plates is transferred, and with a doctor blade attached to this cylinder for removing the ink from the cylinder surface.
- Such wiping devices have long been known and either work as wiping devices in the actual sense with a wiping cylinder lying against the plate cylinder, which completely removes paint from the gravure printing plates outside the stitch pits (for example DE-PS 1 229 547), or are designed as pre-wiping devices (for example DE-PS 1 058 074 or EP-B-0 091 709), which are additionally installed in the direction of rotation of the plate cylinder in front of the actual wiper device.
- the wiping cylinder is cleaned in such a way that the majority of the paint is first removed by a doctor blade and then the wiping cylinder surface is completely cleaned of the adhering paint with the aid of a suitable cleaning liquid and further cleaning elements.
- Pre-wiping devices are generally used in intaglio printing machines with direct inking and have the task of pressing the ink previously applied to the printing plates into the stitch pits and removing excess ink, while the actual wiping then takes place for the purpose of completely cleaning the plate surface.
- Known pre-wiping devices either have only one pre-wiping cylinder rolling on the plate cylinder, against which a doctor blade and possibly further cleaning elements for removing the ink from the cylinder surface lie (DE-PS 1,058,074), or consist of two cylinders (EP-B-0 091 709), namely a pre-wiping cylinder rolling on the plate cylinder and a further cylinder lying on it, which takes over the color from the pre-wiping cylinder and is itself cleaned by a doctor blade and possibly further cleaning elements.
- the ink reaching the doctor blade has to be removed from the doctor blade at regular intervals in order to ensure proper wiping or pre-wiping over a long period of time.
- This removal of the ink from the squeegee has so far been carried out manually by the printer with a spatula, which means a strenuous, often repetitive and time-consuming work.
- the object of the present invention is to improve a wiping device, in particular a pre-wiping device, in such a way that the ink is removed from the doctor blade regularly and reliably in a mechanical manner and can be fed to an ink collecting container.
- the wiper device according to the invention is achieved by the features specified in the characterizing part of claim 1.
- the arrangement is preferably such that the paint slide and the wall parts are designed to be complementary to one another such that before one or the other end position of the paint slide is reached, the color displaced by the latter moves into a space that is at least approximately completely closed by walls of the paint slide and the relevant wall part , which is almost completely filled by the color slide in the end position.
- the top view of the two wall parts is expediently U-shaped and their U legs are directed towards one another, and the paint slider has a dimension perpendicular to its direction of thrust that is adapted to the distance between the two U legs of a wall part, so that it is in its two end positions engages inside one or the other U-shaped wall part.
- the paint slider acts like a kind of piston, which almost completely displaces the paint within the U-shaped wall part.
- the wiping device is preferably designed as a pre-wiping device and works with an actual pre-wiping cylinder which bears against the plate cylinder and with a second cylinder made of ceramic which takes over the color from the pre-wiping cylinder and which is itself cleaned of paint by the adjacent doctor blade.
- the pre-wiping device consists of a pre-wiping cylinder 2, a cylinder 3 made of ceramic, a doctor blade 4 lying against the cylinder 3, inclined downwards with its parts for later displacement of the ink, as well as two ink pumps 11, which act on both sides of the ink Parts are installed on the back of the squeegee 4.
- the pre-wiping cylinder 2 rolled off on the printing plates, not shown, of a plate cylinder 1 belonging to a intaglio printing machine in order to press the ink into the stitch pits and to remove excess ink from the printing plates.
- the paint then reaches the ceramic cylinder 3 rolling on the pre-wiping cylinder 2 and is removed from the surface thereof using the doctor blade 4.
- the parts described below with reference to FIGS. 2 to 4 are installed on the squeegee 4.
- wall parts 6 are fastened on the surface thereof, which are U-shaped in plan view are.
- the middle sections 6b or the bases of these U-shaped wall parts have inclined inner surfaces 7 and run parallel to the side edges of the squeegee 4, while their U-legs 6a are directed towards one another and lie opposite one another.
- These two side wall parts 6 delimit between them a zone referred to below as the receiving region 5, into which the ink 15 flowing downward on the doctor surface comes.
- this receiving area 5 there is a paint slider 8, which is constantly mechanically moved back and forth in the transverse direction of the squeegee 4 between the two wall parts 6 in the sense of the double arrow according to FIG. 3, and the ink 15 entering the receiving area 5 in this way alternately inside of one and the other U-shaped wall part 6 pushes.
- an ink pump 11 is installed below the level of the receiving area 5, the slot-shaped inlet opening 12 of which opens into the receiving area 5 between the two U-legs 6a of the wall part 6 and extends along the lower edge of the inner surface 7 of this wall part 6 extends.
- the ink pump 11 is a gear pump with two intermeshing gear wheels 11a, 11b, the axes of which run parallel to the slot-shaped inlet opening 12 and extend over the entire length of this inlet opening, that is to say over the entire distance between the two U-legs 6a, extend.
- the outlet openings 13 of the two paint pumps 11 are connected to a container (not shown) for holding the paint.
- Each ink pump 11 is driven by a drive 14.
- the color slide 8 has a dimension perpendicular to the direction of thrust, which is adapted to the distance between the two U-legs 6a of a wall part 6, so that it is in each End position can intervene in the interior of the relevant wall part 6.
- the color slide 8 in the example considered has the shape of an inverted V in cross section and slides with the V tip or its apex edge on the receiving area 5; the two obliquely outwardly inclined side surfaces 9 of the paint slide 8, which push the paint 15 in front of them, have the same inclination and almost the same width as the inner surface 7 facing them of the central section 6b of the wall part 6 concerned.
- the paint slide 8 instructs on its upper side a roof wall 10 projecting roof-shaped on all sides, which is parallel to the surface of the receiving area 5 and at a distance corresponding to the height of the wall parts 6; as a result, the wall part 6 in question is overlapped by the cover wall 10 in each end position of the paint slide 8, and the interior space delimited by the wall part 6 is closed at the top.
- the paint slide acts like a piston, which in its end position almost completely fills the practically all-round interior between the U-legs 6a. Therefore, with each push of the ink slide 8, practically all of the ink 15 is displaced from the receiving area 5 of the squeegee 4 and squeezed into the relevant inlet opening 12 of the ink pump 11, from where it is conveyed into the ink receptacle.
- the arrangement thus ensures a during printing reliable removal of the ink from the squeegee.
- Any known sliding mechanism with reversal of movement can be used for the automatic back and forth movement of the color slide 8.
- the mentioned receiving area 5 of the doctor blade 4 can be formed by a trough-shaped depression provided in this doctor blade, at the ends of which the wall parts 6 are fastened and in which the ink slide 8 is moved back and forth.
- the invention is not limited to the exemplary embodiment described, but rather allows for numerous variants, in particular in the design and shape of the wall parts and the paint slide, and also with regard to the structure of the wiper device and the paint pumps.
Abstract
Description
Die Erfindung bezieht sich auf eine Wischvorrichtung einer Stichtiefdruckmaschine mit wenigstens einem Zylinder, auf welchen die von den Druckplatten abgehobene Farbe übertragen wird, und mit einer an diesem Zylinder anliegenden Rakel zur Entfernung der Farbe von der Zylinderoberfläche.The invention relates to a wiping device of an intaglio printing machine with at least one cylinder, to which the ink lifted off the printing plates is transferred, and with a doctor blade attached to this cylinder for removing the ink from the cylinder surface.
Derartige Wischvorrichtungen sind seit langem bekannt und arbeiten entweder als Wischeinrichtungen im eigentlichen Sinne mit einem am Plattenzylinder anliegenden Wischzylinder, welcher die Oberfläche der Stichtiefdruckplatten ausserhalb der Stichgruben vollständig von Farbe säubert (zum Beispiel DE-PS 1 229 547), oder sind als Vorwischvorrichtungen ausgebildet (zum Beispiel DE-PS 1 058 074 oder EP-B-0 091 709), welche zusätzlich in Drehrichtung des Plattenzylinders vor der eigentlichen Wischeinrichtung installiert sind.Such wiping devices have long been known and either work as wiping devices in the actual sense with a wiping cylinder lying against the plate cylinder, which completely removes paint from the gravure printing plates outside the stitch pits (for example DE-PS 1 229 547), or are designed as pre-wiping devices ( for example DE-PS 1 058 074 or EP-B-0 091 709), which are additionally installed in the direction of rotation of the plate cylinder in front of the actual wiper device.
Im Falle der eigentlichen Wischeinrichtung erfolgt die Reinigung des Wischzylinders in der Weise, dass zunächst der grösste Teil der Farbe durch eine Rakel entfernt und anschliessend die Wischzylinderoberfläche mit Hilfe einer geeigneten Reinigungsflüssigkeit und weiterer Reinigungselemente vollständig von der anhaftenden Farbe gesäubert wird.In the case of the actual wiping device, the wiping cylinder is cleaned in such a way that the majority of the paint is first removed by a doctor blade and then the wiping cylinder surface is completely cleaned of the adhering paint with the aid of a suitable cleaning liquid and further cleaning elements.
Vorwischvorrichtungen werden im allgemeinen bei Stichtiefdruckmaschinen mit direkter Einfärbung verwendet und haben die Aufgabe, die zuvor auf die Druckplatten aufgebrachte Farbe in die Stichgruben einzudrücken und bereits überschüssige Farbe zu entfernen, während die eigentliche Wischung zwecks vollkommener Säuberung der Plattenoberfläche anschliessend stattfindet.Pre-wiping devices are generally used in intaglio printing machines with direct inking and have the task of pressing the ink previously applied to the printing plates into the stitch pits and removing excess ink, while the actual wiping then takes place for the purpose of completely cleaning the plate surface.
Bekannte Vorwischvorrichtungen weisen entweder nur einen am Plattenzylinder abrollenden Vorwischzylinder auf, an welchem eine Rakel und gegebenenfalls weitere Reinigungselemente zur Entfernung der Farbe von der Zylinderoberfläche anliegen (DE-PS 1.058.074), oder aber bestehen aus zwei Zylindern (EP-B-0 091 709), nämlich einem am Plattenzylinder abrollenden Vorwischzylinder und einem an diesem anliegenden weiteren Zylinder, der die Farbe vom Vorwischzylinder übernimmt und seinerseits von einer Rakel und gegebenenfalls weiteren Reinigungselementen gesäubert wird.Known pre-wiping devices either have only one pre-wiping cylinder rolling on the plate cylinder, against which a doctor blade and possibly further cleaning elements for removing the ink from the cylinder surface lie (DE-PS 1,058,074), or consist of two cylinders (EP-B-0 091 709), namely a pre-wiping cylinder rolling on the plate cylinder and a further cylinder lying on it, which takes over the color from the pre-wiping cylinder and is itself cleaned by a doctor blade and possibly further cleaning elements.
Bei den bisher bekannten Wischvorrichtungen,insbesondere Vorwischvorrichtungen, muss die auf die Rakel gelangende Farbe in regelmässigen Abständen von der Rakel entfernt werden, um eine einwandfreie Wischung bzw. Vorwischung über lange Zeit zu gewährleisten. Dieses Entfernen der Farbe von der Rakel wird bisher von Hand vom Drucker mit einer Spachtel ausgeführt, was eine anstrengende, sich häufig wiederholende und zeitraubende Arbeit bedeutet.In the previously known wiping devices, in particular pre-wiping devices, the ink reaching the doctor blade has to be removed from the doctor blade at regular intervals in order to ensure proper wiping or pre-wiping over a long period of time. This removal of the ink from the squeegee has so far been carried out manually by the printer with a spatula, which means a strenuous, often repetitive and time-consuming work.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Wischvorrichtung, insbesondere eine Vorwischvorrichtung, so zu verbessern, dass die Farbe von der Rakel regelmässig und zuverlässig auf mechanische Weise entfernt wird und einem Farbsammelbehälter zugeführt werden kann.The object of the present invention is to improve a wiping device, in particular a pre-wiping device, in such a way that the ink is removed from the doctor blade regularly and reliably in a mechanical manner and can be fed to an ink collecting container.
Zur Lösung dieser Aufgabe ist die Wischvorrichtung nach der Erfindung durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.To achieve this object, the wiper device according to the invention is achieved by the features specified in the characterizing part of
Dadurch wird erreicht, dass die auf der Rakel herabfliessende Farbe in dem Masse, wie sie vom Zylinder abgerakelt wird, nach beiden Seiten hin, ohne Anwendung erhöhter Drücke, verdrängt, weggefördert und einem Behälter zugeführt wird, ohne dass dazu eine manuelle Arbeit erforderlich wäre.It is thereby achieved that the ink flowing down on the squeegee, as it is scraped off the cylinder, is displaced on both sides, without the use of increased pressures, conveyed away and fed to a container without the need for manual work.
Vorzugsweise ist die Anordnung so getroffen, dass der Farbschieber und die Wandteile derart komplementär zueinander ausgebildet sind, dass vor Erreichen der einen oder anderen Endstellung des Farbschiebers die von diesem verdrängte Farbe in einen durch Wände des Farbschiebers und des betreffenden Wandteils wenigstens näherungsweise vollständig geschlossenen Raum gelangt, der in der Endstellung des Farbschiebers von diesem fast vollständig ausgefüllt wird.The arrangement is preferably such that the paint slide and the wall parts are designed to be complementary to one another such that before one or the other end position of the paint slide is reached, the color displaced by the latter moves into a space that is at least approximately completely closed by walls of the paint slide and the relevant wall part , which is almost completely filled by the color slide in the end position.
Zweckmässigerweise sind die beiden Wandteile in der Draufsicht U-förmig ausgebildet und ihre U-Schenkel aufeinander zu gerichtet, und der Farbschieber hat senkrecht zu seiner Schubrichtung eine dem Abstand zwischen den beiden U-Schenkeln eines Wandteils angepasste Abmessung, so dass er in seinen beiden Endstellungen ins Innere des einen bzw. anderen U-förmigen Wandteils eingreift. Auf diese Weise fungiert der Farbschieber wie eine Art Kolben, der die Farbe innerhalb des U-förmigen Wandteils nahezu vollständig verdrängt.The top view of the two wall parts is expediently U-shaped and their U legs are directed towards one another, and the paint slider has a dimension perpendicular to its direction of thrust that is adapted to the distance between the two U legs of a wall part, so that it is in its two end positions engages inside one or the other U-shaped wall part. In this way, the paint slider acts like a kind of piston, which almost completely displaces the paint within the U-shaped wall part.
Vorzugsweise ist die Wischvorrichtung als Vorwischvorrichtung ausgebildet und arbeitet mit einem eigentlichen Vorwischzylinder, der am Plattenzylinder anliegt, und mit einem zweiten aus Keramik bestehenden Zylinder, welcher die Farbe vom Vorwischzylinder übernimmt und der selber durch die anliegende Rakel von Farbe gesäubert wird.The wiping device is preferably designed as a pre-wiping device and works with an actual pre-wiping cylinder which bears against the plate cylinder and with a second cylinder made of ceramic which takes over the color from the pre-wiping cylinder and which is itself cleaned of paint by the adjacent doctor blade.
Weitere zweckmässige Ausgestaltungen ergeben sich aus den abhängigen Ansprüchen.Further expedient configurations result from the dependent claims.
Die Erfindung wird anhand der Zeichnung am Ausführungsbeispiel einer Vorwischvorrichtung näher erläutert. Es zeigen :
Figur 1 eine schematische Darstellung einer mit einem Plattenzylinder zusammenwirkenden Vorwischvorrichtung mit einem eigentlichen Vorwischzylinder und einem aus Keramik bestehenden zweiten Zylinder, an welchem die Rakel anliegt,Figur 2 eine Draufsicht auf die Rakel und den mit dieser zusammenwirkenden Zylinder,Figur 3 einen Schnitt längs der Linie III-III nachFigur 2 undFigur 4 eine teilweise, im Schnitt dargestellte Draufsicht auf die nachFigur 2 rechte Farbpumpe.
- 1 shows a schematic illustration of a pre-wiping device interacting with a plate cylinder with an actual pre-wiping cylinder and a second cylinder made of ceramic, against which the doctor blade rests,
- FIG. 2 shows a top view of the doctor blade and the cylinder interacting with it,
- 3 shows a section along the line III-III of Figure 2 and
- Figure 4 is a partial plan view, shown in section, of the paint pump on the right according to Figure 2.
Im Beispiel nach Figur 1 besteht die Vorwischvorrichtung aus einem Vorwischzylinder 2, einem aus Keramik bestehenden Zylinder 3, einer am Zylinder 3 anliegenden, schräg abwärts geneigten Rakel 4 mit ihren später erläuterten Teilen zur seitlichen Verdrängung der Farbe sowie aus zwei Farbpumpen 11, die beiderseits dieser Teile an der Rückseite der Rakel 4 installiert sind. Der Vorwischzylinder 2 rollte an den nicht dargestellten Druckplatten eines zu einer Stichtiefdruckmaschine gehörenden Plattenzylinders 1 ab, um die Farbe in die Stichgruben zu drücken und überschüssige Farbe von den Druckplatten zu entfernen. Die Farbe gelangt dann auf den am Vorwischzylinder 2 abrollenden Keramikzylinder 3 und wird von dessen Oberfläche mit Hilfe der Rakel 4 entfernt.In the example according to FIG. 1, the pre-wiping device consists of a
Um nun die im allgemeinen dickflüssige Stichtiefdruckfarbe von der Rakel 4 ständig, ohne Eingriff von Hand, zu entfernen, sind an der Rakel 4 die im folgenden anhand der Figuren 2 bis 4 beschriebenen Teile installiert. An den gegenüberliegenden Seitenrändern der Rakel 4 sind auf deren Oberfläche Wandteile 6 befestigt, die in der Draufsicht U-förmig ausgebildet sind. Die Mittelabschnitte 6b oder die Basen dieser U-förmigen Wandteile haben geneigte Innenflächen 7 und verlaufen parallel zu den Seitenrändern der Rakel 4, während ihre U-Schenkel 6a aufeinanderzugerichtet sind und einander gegenüberliegen. Diese beiden seitlichen Wandteile 6 begrenzen zwischen sich eine im folgenden als Aufnahmebereich 5 bezeichnete Zone, in welche die auf der Rakeloberfläche abwärtsfliessende Farbe 15 gelangt. Auf diesem Aufnahmebereich 5 befindet sich ein Farbschieber 8, der in Querrichtung der Rakel 4 zwischen den beiden Wandteilen 6 im Sinne des Doppelpfeils nach Figur 3 ständig mechanisch hin- und herbewegt wird und die in den Aufnahmebereich 5 gelangende Farbe 15 auf diese Weise abwechselnd ins Innere des einen und des anderen U-förmigen Wandteils 6 schiebt.In order to constantly remove the generally viscous intaglio printing ink from the
An beiden Seiten der Rakel 4 ist unterhalb der Ebene des Aufnahmebereichs 5 je eine Farbpumpe 11 installiert, deren schlitzförmig ausgebildete Einlassöffnung 12 im Aufnahmebereich 5 zwischen den beiden U-Schenkeln 6a des Wandteils 6 mündet und sich längs des unteren Randes der Innenfläche 7 dieses Wandteils 6 erstreckt. Bei der Farbpumpe 11 handelt es sich im betrachteten Beispiel um eine Zahnradpumpe mit zwei miteinander kämmenden Zahnrädern 11a, 11b, deren Achsen parallel zur schlitzförmigen Einlassöffnung 12 verlaufen und sich über die gesamte Länge dieser Einlassöffnung, also über den gesamten Abstand zwischen den beiden U-Schenkeln 6a, erstrecken. Die Auslassöffnungen 13 der beiden Farbpumpen 11 sind mit einem nicht dargestellten Behälter zur Aufnahme der Farbe verbunden. Jede Farbpumpe 11 wird durch einen Antrieb 14 angetrieben.On both sides of the
Um die Verdrängung der in den Aufnahmebereich 5 gelangenden Farbe zu der einen und der anderen Einlassöffnung 12 hin zu erleichtern, hat der Farbschieber 8 senkrecht zur Schubrichtung eine dem Abstand zwischen den beiden U-Schenkeln 6a eines Wandteils 6 angepasste Abmessung, so dass er in jeder Endstellung ins Innere des betreffenden Wandteils 6 eingreifen kann. Ferner hat der Farbschieber 8 im betrachteten Beispiel im Querschnitt die Form eines umgekehrten V und gleitet mit der V-Spitze bzw. seiner Scheitelkante auf dem Aufnahmebereich 5; die beiden schräg nach aussen geneigten Seitenflächen 9 des Farbschiebers 8, welche die Farbe 15 vor sich herschieben, haben die gleiche Neigung und fast die gleiche Breite wie die ihnen zugekehrte Innenfläche 7 des mittleren Abschnitts 6b des betreffenden Wandteils 6. Ausserdem weist der Farbschieber 8 an seiner Oberseite eine an allen Seiten dachförmig vorstehende Deckwand 10 auf, die parallel zur Fläche des Aufnahmebereichs 5 ist und von dieser einen der Höhe der Wandteile 6 entsprechenden Abstand hat; dadurch wird in jeder Endstellung des Farbschiebers 8 der betreffende Wandteil 6 von der Deckwand 10 überlappt und so der vom Wandteil 6 begrenzte Innenraum oben verschlossen.In order to facilitate the displacement of the color entering the
Aufgrund der zueinander komplementären Ausbildung von Farbschieber 8 und Wandteilen 6 wirkt der Farbschieber wie ein Kolben, welcher in seiner Endstellung den praktisch allseitig geschlossenen Innenraum zwischen den U-Schenkeln 6a nahezu vollständig ausfüllt. Daher wird bei jedem Schub des Farbschiebers 8 praktisch die gesamte Farbe 15 vom Aufnahmebereich 5 der Rakel 4 verdrängt und in die betreffende Einlassöffnung 12 der Farbpumpe 11 gequetscht, von wo sie in den Farbaufnahmebehälter befördert wird. Die Anordnung gewährleistet also während des Druckbetriebs eine zuverlässige Entfernung der Farbe von der Rakel.Due to the complementary design of the
Zur automatischen Hin- und Herbewegung des Farbschiebers 8 kann jeder bekannte Schiebemechanismus mit Bewegungsumkehr verwendet werden.Any known sliding mechanism with reversal of movement can be used for the automatic back and forth movement of the
Gegebenenfalls kann der erwähnte Aufnahmebereich 5 der Rakel 4 durch eine in dieser Rakel vorgesehene wannenförmige Vertiefung gebildet werden, an deren Enden die Wandteile 6 befestigt sind und in welcher der Farbschieber 8 hin- und herbewegt wird.If necessary, the mentioned
Die Erfindung ist nicht auf das beschriebene Ausführungsbeispiel beschränkt, sondern lässt insbesondere in der Ausgestaltung und Form der Wandteile und des Farbschiebers sowie auch hinsichtlich des Aufbaus der Wischvorrichtung und der Farbpumpen mannigfache Varianten zu.The invention is not limited to the exemplary embodiment described, but rather allows for numerous variants, in particular in the design and shape of the wall parts and the paint slide, and also with regard to the structure of the wiper device and the paint pumps.
Claims (8)
- Wiping device of an intaglio printing machine having at least one cylinder (3) onto which the ink raised from the printing plates is transferred, and having a doctor blade (4) resting against said cylinder (3) for removing the ink from the cylinder surface, characterised in that there are arranged on the downwardly inclined doctor blade (4) wall parts (6) which are located laterally opposite one another and, between these wall parts, an ink slide (8), which is movable back and forth on the doctor blade surface by means of a drive device, in the form of a displacement body adapted on both sides to the wall parts (6), and in that there is installed on each side below the doctor blade surface an ink pump (11) whose inlet opening (12) opens out on the doctor blade surface and extends along the lower edge of the inner surface (7) of the relevant wall part (6) in such a way that the ink passing between the two wall parts (6) is displaced by the ink slide (8) alternately to the one and to the other inlet opening (12), where it is sucked off by the relevant ink pump (11).
- Wiping device according to Claim 1, characterised in that the ink slide (8) and the wall parts (6) are constructed to be complementary to one another in such a way that, prior to the ink slide (8) reaching the one or the other end position, the ink displaced by it passes into a space which is at least virtually completely closed by walls of the ink slide (8) and of the relevant wall part (6) and which is almost completely filled by the ink slide in the end position thereof.
- Wiping device according to Claim 1 or 2, characterised in that the two wall parts (6) are of U-shaped construction in the plan view and their U-limbs (6a) are directed towards one another, and in that the ink slide (8) has, perpendicular to its slide direction, a dimension adapted to the spacing between the two U-limbs (6a) of one wall part (6), such that it engages in its two end positions in the interior of the one or the other U-shaped wall part (6).
- Wiping device according to Claim 2 or 3, characterised in that the ink slide (8) has on its upper side a roof-shaped covering wall (10) which projects towards all sides and whose spacing from the doctor blade surface corresponds to the height of the wall parts (6), such that, in the one or the other end position of the ink slide (8) engaging in one of the wall parts (6), the relevant parts of the covering wall (10) overlap said wall part and cover its interior.
- Wiping device according to one of Claims 1 to 4, characterised in that the ink slide (8) is V-shaped in cross-section and rests with its V-tip on the doctor blade surface, and in that the inner surface (7) of the portion (6b) of each wall part (6) oriented parallel to the side edge of the doctor blade (4) has the same inclination as the side surface (9) of the ink slide (8) located opposite said inner surface.
- Wiping device according to one of Claims 1 to 5, characterised in that the ink pumps (11) are gear pumps whose gearwheels (11a, 11b) meshing with one another have in the axial direction a length corresponding to the longitudinal dimension of the slot-shaped inlet openings (12).
- Wiping device according to one of Claims 1 to 6, characterised in that the doctor blade (4) has a trough-shaped depression which extends in the transverse direction and constitutes a receiving region (5) for the ink flowing down, and in which there are arranged laterally the abovementioned wall parts (6) and the ink slide (8) gliding along on the bottom of the depression between said wall parts.
- Wiping device according to one of Claims 1 to 7, characterised in that it is constructed as a pre-wiping device having a pre-wiping cylinder (2), which rests against the plate cylinder (1) of a line intaglio printing machine, and a second cylinder (3), preferably a ceramic cylinder, which interacts with said pre-wiping cylinder and against which the abovementioned doctor blade (4) rests with the wall parts (6), the ink slide (8) and the ink pumps (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH3049/91 | 1991-10-17 | ||
| CH304991 | 1991-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0538190A1 EP0538190A1 (en) | 1993-04-21 |
| EP0538190B1 true EP0538190B1 (en) | 1996-04-03 |
Family
ID=4247467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92810760A Expired - Lifetime EP0538190B1 (en) | 1991-10-17 | 1992-10-07 | Wiping device for a intaglio printing machine |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5222432A (en) |
| EP (1) | EP0538190B1 (en) |
| JP (1) | JP3133516B2 (en) |
| KR (1) | KR100187319B1 (en) |
| CN (1) | CN1049183C (en) |
| AT (1) | ATE136256T1 (en) |
| AU (1) | AU648486B2 (en) |
| CA (1) | CA2079994C (en) |
| DE (1) | DE59205898D1 (en) |
| RU (1) | RU2067932C1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0622191B1 (en) * | 1993-04-30 | 1997-01-22 | De La Rue Giori S.A. | Wiping device of an intaglio printing machine |
| GB2339722B (en) | 1998-07-17 | 2003-02-19 | Armstrong World Ind Ltd | Improvements in and relating to printing machines |
| JP4163923B2 (en) * | 2002-10-01 | 2008-10-08 | 株式会社小森コーポレーション | Intaglio printing machine |
| JP2005271421A (en) * | 2004-03-25 | 2005-10-06 | Komori Corp | Intaglio printing machine |
| DE102006025577B3 (en) * | 2006-06-01 | 2007-05-10 | Koenig & Bauer Ag | Preliminary wiping device for engraving intaglio printing has two interacting rolls below doctor, rotating in trap tank |
| CN104494283A (en) * | 2014-11-28 | 2015-04-08 | 无锡市晨阳彩印厂 | Printing ink scraper capable of collecting and storing printing ink |
| CN104494284A (en) * | 2014-11-28 | 2015-04-08 | 无锡市晨阳彩印厂 | Ink scraper device with arc-shaped scraper surface |
| TWI574846B (en) * | 2016-02-18 | 2017-03-21 | 財團法人工業技術研究院 | Gravure printing apparatus |
| CN106379052B (en) * | 2016-11-17 | 2018-01-19 | 重庆强大巴郡知识产权服务有限公司 | Ceramic tile printing device |
| DE102017219709A1 (en) * | 2016-11-28 | 2018-05-30 | Heidelberger Druckmaschinen Ag | press |
| DE102017222345A1 (en) * | 2017-01-13 | 2018-07-19 | Heidelberger Druckmaschinen Ag | Doctor blade device of a printing machine |
| CN109094226B (en) * | 2018-06-08 | 2021-01-08 | 合肥华冠包装科技有限公司 | Gravure printing process for paper packaging box and printing equipment thereof |
| CN110171188B (en) * | 2019-06-14 | 2023-11-28 | 山东鲁烟莱州印务有限公司 | Automatic cleaning device and cleaning method for doctor blade opening of gravure press |
| CN112693216B (en) * | 2020-12-09 | 2022-04-12 | 南京三隆包装有限公司 | Printing machine capable of fixing to-be-printed products with different thicknesses and using method thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE282786C (en) * | ||||
| GB285140A (en) * | 1926-11-10 | 1928-02-10 | Wilhelm Mailaender | Improvements in or relating to rotary intaglio printing machines |
| US1837671A (en) * | 1929-05-31 | 1931-12-22 | Pirie William James | Ink removing contrivance for printing machines |
| US2098750A (en) * | 1936-04-04 | 1937-11-09 | Hoe & Co R | Inking mechanism for rotary intaglio printing machines |
| GB550287A (en) * | 1940-10-24 | 1943-01-01 | Goss Printing Press Co Ltd | Improvements in or relating to ink fountains for rotary printing presses |
| CH438381A (en) * | 1965-04-14 | 1967-06-30 | Giori Gualtiero | Cleaning device for wiping cylinders in single or multi-color steel engraving machines |
| US3988988A (en) * | 1975-04-21 | 1976-11-02 | Addressograph Multigraph Corporation | Device for drying the surface of a blanket cylinder of ink washing solvent |
| AU550695B2 (en) * | 1982-04-07 | 1986-03-27 | De La Rue Giori S.A. | Copperplate engraving machine for paper currency |
| EP0368485A3 (en) * | 1988-10-31 | 1991-01-30 | Seiken Graphics, Inc. | Improvements in or relating to lithographic printing |
| US5085144A (en) * | 1990-05-03 | 1992-02-04 | Motter Printing Press Co. | Ink fountain apparatus |
-
1992
- 1992-10-06 CA CA002079994A patent/CA2079994C/en not_active Expired - Fee Related
- 1992-10-06 AU AU26206/92A patent/AU648486B2/en not_active Ceased
- 1992-10-07 EP EP92810760A patent/EP0538190B1/en not_active Expired - Lifetime
- 1992-10-07 US US07/957,726 patent/US5222432A/en not_active Expired - Lifetime
- 1992-10-07 AT AT92810760T patent/ATE136256T1/en not_active IP Right Cessation
- 1992-10-07 DE DE59205898T patent/DE59205898D1/en not_active Expired - Fee Related
- 1992-10-13 KR KR1019920018807A patent/KR100187319B1/en not_active IP Right Cessation
- 1992-10-15 RU RU9292004320A patent/RU2067932C1/en not_active IP Right Cessation
- 1992-10-15 JP JP04277155A patent/JP3133516B2/en not_active Expired - Lifetime
- 1992-10-17 CN CN92111557A patent/CN1049183C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2079994A1 (en) | 1993-04-18 |
| CN1049183C (en) | 2000-02-09 |
| JP3133516B2 (en) | 2001-02-13 |
| AU2620692A (en) | 1993-04-22 |
| KR100187319B1 (en) | 1999-05-15 |
| AU648486B2 (en) | 1994-04-21 |
| CN1075913A (en) | 1993-09-08 |
| ATE136256T1 (en) | 1996-04-15 |
| KR930007649A (en) | 1993-05-20 |
| US5222432A (en) | 1993-06-29 |
| JPH05220924A (en) | 1993-08-31 |
| DE59205898D1 (en) | 1996-05-09 |
| CA2079994C (en) | 2004-03-30 |
| EP0538190A1 (en) | 1993-04-21 |
| RU2067932C1 (en) | 1996-10-20 |
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