EP1110728B1 - Metering device for coating liquids in a coating unit - Google Patents
Metering device for coating liquids in a coating unit Download PDFInfo
- Publication number
- EP1110728B1 EP1110728B1 EP00127631A EP00127631A EP1110728B1 EP 1110728 B1 EP1110728 B1 EP 1110728B1 EP 00127631 A EP00127631 A EP 00127631A EP 00127631 A EP00127631 A EP 00127631A EP 1110728 B1 EP1110728 B1 EP 1110728B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile body
- chamber
- reservoir
- metering system
- gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/027—Ink rail devices for inking ink rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
Definitions
- the invention relates to a metering system for coating liquids in a coating unit, preferably for a printing press or a coating machine, with a chambered doctor blade and an associated, provided with wells and webs anilox roller.
- a metering system of this type is known as a chambered doctor blade with an associated roller with cups and webs from EP 0 629 501 A1.
- the chambered doctor blade has an end closed housing with a chamber formed in the interior and a positive direction in the direction of rotation of the roller closing doctor blade and a negatively employed working doctor blade.
- the chamber doctor also has a feed line feeding into the lower part of the chamber and a return line for the coating medium which leads away in the upper part of the chamber.
- a brush is connected as a profile body with the inner wall of the housing over the length of the chamber, which is in contact with the circumference of the roller.
- the brush is disposed approximately centrally in the chamber so that an upper and a lower reservoir is formed within the chamber.
- the brush in the chamber is associated with the positively-placed locking doctor blade directly adjacent. The brush is to prevent the ingress of air bubbles in the reservoir as a whole or in the lower reservoir, since this has a negative effect on the filling of the wells in an anilox roll.
- the disadvantage here is that the brush is subject to wear due to the constant contact with the anilox roller and that when processing fast-curing coating liquids, such as water-based dispersion varnish, for example Glued brush structure or at least must be added and cleaned.
- fast-curing coating liquids such as water-based dispersion varnish, for example Glued brush structure or at least must be added and cleaned.
- EP 0 568 674 B1 discloses a metering system with chamber doctor blade and screened application roller for the processing of solvent-containing printing fluids, in particular for flexographic printing.
- This chamber doctor blade has a profile body connected to the inner wall of the housing, which has a pressure nose arranged in the direction of the roll at a distance from the roll.
- the pressure nose has a return in the direction of rotation of the roller in order to achieve a sudden cross-sectional widening of the reservoir in the direction of rotation of the roller behind the pressure nose within the chamber.
- the invention has for its object to provide a metering system of the type described above that avoids the disadvantages mentioned, in particular a more uniform Filling the wells of an anilox roller allows and reduces the formation of bubbles within the metering system.
- a first advantage is due to the fact that the dosing system can be used universally for higher machine speeds, in particular for printing presses.
- a sheet-fed rotary printing press with approx. 15,000 sheets / h is cited here.
- anilox rollers with a larger scoop volume a larger volume of air is introduced into the chamber space of a chamber doctor blade through the emptied cells. This can affect the print quality. It is therefore advantageous that dosing systems can also be used with anilox rollers having a larger scoop volume and sufficient filling of the cells is ensured, so that no impairment of the gloss occurs on the printing material.
- An advantage is also that, starting from the anilox roller, a more uniform layer thickness of the coating liquid on the printing substrate in a printing press is ensured.
- a further advantage is that the chambered doctor blade can be easily cleaned by a simple design of the contour in the interior and the formation of nests for depositing coating liquid is noticeably reduced.
- the simple contour is also advantageous if a cleaning of the chambered doctor blade and possibly the anilox roller is required.
- the metering system especially of the chambered doctor blade, can be operated optionally with a one-piece reservoir (without profile body) or with a two-part reservoir (with profile body), depending on the coating application.
- the profile body is releasably connectable at least with the inner wall of the chamber space.
- a metering system 5 consisting of a screened application roller 3 with cups and webs and a chamber doctor blade 4 is assigned to a forme cylinder 2 in a coating unit.
- the forme cylinder 2 carries, for example, a blanket (planographic printing form) or a flexible high-pressure mold and has a cylinder channel.
- This form cylinder 2 is operatively connected to a sheet-guiding printing cylinder 1, wherein the printing cylinder 1 is double-sized relative to the forme cylinder 2 and has two diametrically staggered sheet holding systems for the sheet transport in the conveying direction 6.
- the rastered applicator roll 3 is in its direction of rotation 18 a positively hired Sch Strukturrakelblatt 13 and a negatively employed Härakelblatt 10, which are arranged on the chambered doctor blade 4 assigned.
- the chambered doctor blade 4 has in known manner a housing with frontally arranged boundary walls, so that the screened applicator roller 3, a chamber space is formed.
- a feed line 7 feeds into a reservoir 11 adjacent to the working doctor blade 10 (in the lower area of the chamber space in FIG. 2) a coating liquid and a return line 8 leads from a reservoir 12 adjacent to the closing doctor blade 13 (in FIG. 2 the upper area of the chamber space) the excess coating liquid via an upwardly open collection system 9 from.
- the supply and return lines 7,8 are operated by means of conveyor and suction pump as a circulation system.
- An axially parallel to the screened applicator roll 3 within the chamber chamber of the chambered doctor blade 4 arranged profile body 14 is with its back 25 by means of a detachable connection 15 connected to the inner wall 16 of the chamber space.
- the inner wall 16 is preferably flat and the inner wall 16 associated rear 25 of the profile body 14 is also flat.
- the inner wall 16 itself can receive a part of the profile body 14 releasably positively.
- the chamber space of the chamber doctor blade 4 for receiving the coating liquid is formed by the optional use of the detachably arranged profile body 14 in a first reservoir 11 in the region of the working doctor blade 10 and a second reservoir 12 in the region of the closing doctor blade 13.
- the profile body 14 preferably extends over the full length within the chamber space of the chambered doctor blade 4 and is arranged without contact to the adjacent application roller 3, so that between profile body 14 and the circumference of the application roller 3, a gap 17 sets, such that the gap 17 starting From the reservoir 11 to the reservoir 12 can be flowed through by a coating liquid.
- the detachable connection 15 between the inner wall 16 and profile body 14 is preferably achieved by positive engagement or adhesion.
- Fig. 4 some embodiments are shown by way of example.
- the structure of the chambered doctor blade 4 is identical to the training gem. Fig. 2, however, for reasons of clarity, the supply and the return line 7,8 are not shown.
- a non-positive connection of this type can be achieved, for example, by means of permanent magnets arranged axially parallel to the application roller 3 on the inner wall 16 and / or the profile body 14 (FIG. 4a).
- the profile body 14 is connected to an expandable clamping body, wherein the clamping body within the chamber space releasably fixed in position the releasable connection 15 represents.
- the profile body 14 is received in a clamping body, which form-fit, for example by means of screw connection, with the inner wall 16, the releasable connection 15 forms.
- the profile body 14 is designed as a releasable connection 15 in a form-fitting manner by means of a screw connection with the inner wall 16.
- Embodiments of the cross section of the profile body 14 are shown by way of example in FIG. 3. It is gem. Fig. 3a of the profile body 14 formed in the direction of gap 17 concave curvature 19 of the side surfaces and the front has a plateau 21. Alternatively, the side surfaces and or the plateau 21 are formed with convex curvature 20.
- Gem. Fig. 3b is the cross section of the profile body 14 with a semicircular curvature 22, gem.
- Fig. 3c as a triangle 24, acc. Fig. 3d as a trapezoid 23 and acc. Fig. 3 e formed as a rectangle / square 26, wherein there is always a gap 17 between the profile body 14 and the applicator roll 3.
- the profile body 14 on the inner wall 16 by means of the releasable connection 15 can be fastened.
- existing air bubbles are already discharged through the return line 8 in the reservoir 12, preferably aspirated.
- the profile body 14 further prevents the further penetration of air bubbles and depending on the coating liquid and the possible foaming.
- the profile body 14 can be removed from the chamber chamber of the chamber doctor blade 4 or reused.
Abstract
Description
Die Erfindung betrifft ein Dosiersystem für Beschichtungsflüssigkeiten in einer Beschichtungseinheit, vorzugsweise für eine Druckmaschine bzw. eine Lackiermaschine, mit einem Kammerrakel und einer zugeordneten, mit Näpfchen und Stegen versehenen Rasterwalze.The invention relates to a metering system for coating liquids in a coating unit, preferably for a printing press or a coating machine, with a chambered doctor blade and an associated, provided with wells and webs anilox roller.
Ein Dosiersystem dieser Art ist als Kammerrakel mit einer zugeordneten Walze mit Näpfchen und Stegen aus EP 0 629 501 A1 bekannt. Das Kammerrakel weist ein endseitig geschlossenes Gehäuse mit einer im Inneren gebildeten Kammer und einem in Drehrichtung der Walze positiv angestelltem Schließrakelblatt und einem negativ angestelltem Arbeitsrakelblatt auf. Das Kammerrakel weist ferner eine im unteren Teil der Kammer einspeisende Zuführleitung und eine im oberen Teil der Kammer abführende Rücklaufleitung für das Beschichtungsmedium auf. Achsparallel zur Walze ist über die Länge der Kammer eine Bürste als Profilkörper mit der Innenwand des Gehäuses verbunden, welche mit dem Umfang der Walze in Kontakt ist. In einer ersten Ausbildung ist die Bürste annähernd mittig in der Kammer angeordnet, so dass ein oberes und ein unteres Reservoir innerhalb der Kammer gebildet wird. In einer weiteren Ausbildung mit einem einheitlichen Reservoir innerhalb der Kammer ist die Bürste in der Kammer dem positiv angestellten Schließrakelblatt direkt benachbart zugeordnet. Die Bürste soll das Eindringen von Luftbläschen in das Reservoir insgesamt bzw. in das untere Reservoir vermeiden, da dies sich negativ auf die Befüllung der Näpfchen bei einer Rasterwalze auswirkt.A metering system of this type is known as a chambered doctor blade with an associated roller with cups and webs from EP 0 629 501 A1. The chambered doctor blade has an end closed housing with a chamber formed in the interior and a positive direction in the direction of rotation of the roller closing doctor blade and a negatively employed working doctor blade. The chamber doctor also has a feed line feeding into the lower part of the chamber and a return line for the coating medium which leads away in the upper part of the chamber. Axially parallel to the roller, a brush is connected as a profile body with the inner wall of the housing over the length of the chamber, which is in contact with the circumference of the roller. In a first embodiment, the brush is disposed approximately centrally in the chamber so that an upper and a lower reservoir is formed within the chamber. In another embodiment, with a unitary reservoir within the chamber, the brush in the chamber is associated with the positively-placed locking doctor blade directly adjacent. The brush is to prevent the ingress of air bubbles in the reservoir as a whole or in the lower reservoir, since this has a negative effect on the filling of the wells in an anilox roll.
Nachteilig ist hierbei, dass die Bürste durch den ständigen Kontakt zur Rasterwalze einem Verschleiß unterliegt und dass bei Verarbeitung von schnell aushärtenden Beschichtungsflüssigkeiten, wie z.B. Dispersionslack auf Wasserbasis, die Bürstenstruktur verklebt bzw. sich zumindest zusetzt und gereinigt werden muss.The disadvantage here is that the brush is subject to wear due to the constant contact with the anilox roller and that when processing fast-curing coating liquids, such as water-based dispersion varnish, for example Glued brush structure or at least must be added and cleaned.
Weiterhin ist aus EP 0 568 674 B1 ein Dosiersystem mit Kammerrakel und gerasterter Auftragwalze für die Verarbeitung von lösungsmittelhaltigen Druckflüssigkeiten, insbesondere für den Flexodruck, bekannt. Dieses Kammerrakel weist einen mit der Innenwand des Gehäuses verbundenen Profilkörper auf, welcher in Richtung Walze eine zur Walze in einem Abstand angeordnete Drucknase aufweist. Die Drucknase weist in Drehrichtung der Walze einen Rücksprung auf, um eine sprunghafte Querschnittserweiterung des Reservoirs in Drehrichtung der Walze hinter der Drucknase innerhalb der Kammer zu erzielen. Von Nachteil ist hierbei, dass bei dieser Ausbildung mögliche Luftbläschen von dem in Drehrichtung der Walze ersten Reservoir (Einspritz- und Vorwaschkammer) mit der Druckflüssigkeit in das zweite Reservoir (Nachspülkammer) transportiert werden können und dort den Befüllvorgang der Näpfchen der Auftragwalze beeinträchtigen können. Um dies zu verhindern weist der Profilkörper mit Drucknase einen Bypassschlitz und einen Entlüftungsschlitz auf, welche das erste mit dem zweiten Reservoir verbinden.
Bei der Verarbeitung von schnell aushärtenden Beschichtungsflüssigkeiten, wie z.B. Dispersionslack auf Wasserbasis, setzen sich die Flüssigkeiten, bedingt durch die aufwendige Kontur im Inneren dieses Kammergehäuses sowie der relativ engen Schlitze, leicht zu, so dass diese Ausbildung ausschließlich für lösemittelhaltige Druckflüssigkeiten geeignet ist.Furthermore, EP 0 568 674 B1 discloses a metering system with chamber doctor blade and screened application roller for the processing of solvent-containing printing fluids, in particular for flexographic printing. This chamber doctor blade has a profile body connected to the inner wall of the housing, which has a pressure nose arranged in the direction of the roll at a distance from the roll. The pressure nose has a return in the direction of rotation of the roller in order to achieve a sudden cross-sectional widening of the reservoir in the direction of rotation of the roller behind the pressure nose within the chamber. The disadvantage here is that in this training possible air bubbles of the first in the direction of rotation of the roller reservoir (injection and prewash) with the hydraulic fluid in the second reservoir (Nachspülkammer) can be transported and there affect the filling of the cups of the applicator roll. To prevent this, the profile body with pressure nose on a bypass slot and a vent slot, which connect the first with the second reservoir.
In the processing of fast-curing coating liquids, such as water-based dispersion coating, the liquids, due to the complex contour in the interior of this chamber housing and the relatively narrow slots, easily, so that this training is only suitable for solvent-containing hydraulic fluids.
Der Erfindung liegt die Aufgabe zugrunde, ein Dosiersystem der eingangs beschriebenen Art zu schaffen, dass die genannten Nachteile vermeidet, das insbesondere eine gleichmäßigere Befüllung der Näpfchen einer Rasterwalze gestattet und die Bildung von Bläschen innerhalb des Dosiersystemes reduziert.The invention has for its object to provide a metering system of the type described above that avoids the disadvantages mentioned, in particular a more uniform Filling the wells of an anilox roller allows and reduces the formation of bubbles within the metering system.
Gelöst wird die Aufgabe erfindungsgemäß durch die Ausbildungsmerkmale des Hauptanspruches. Weiterbildungen ergeben sich aus den Unteransprüchen.The object is achieved according to the invention by the training features of the main claim. Further developments emerge from the subclaims.
Ein erster Vorteil ist darin begründet, dass das Dosiersystem universell für höhere Maschinengeschwindigkeiten, insbesondere für Druckmaschinen, einsetzbar ist. Beispielhaft sei hier eine Bogenrotationsdruckmaschine mit ca. 15.000 Bogen/h angeführt.A first advantage is due to the fact that the dosing system can be used universally for higher machine speeds, in particular for printing presses. By way of example, a sheet-fed rotary printing press with approx. 15,000 sheets / h is cited here.
Insbesondere bei Rasterwalzen mit größerem Schöpfvolumen wird durch die entleerten Näpfchen ein größeres Luftvolumen in den Kammerraum eines Kammerrakels eingetragen. Dies kann zu Beeinträchtigungen der Druckqualität führen. Vorteilhaft ist es deshalb, dass Dosiersysteme auch mit Rasterwalzen mit größerem Schöpfvolumenen einsetzbar sind und eine ausreichende Befüllung der Näpfchen gewährleistet ist, so dass auf dem Bedruckstoff keine Beeinträchtigungen im Glanz auftreten.Especially with anilox rollers with a larger scoop volume, a larger volume of air is introduced into the chamber space of a chamber doctor blade through the emptied cells. This can affect the print quality. It is therefore advantageous that dosing systems can also be used with anilox rollers having a larger scoop volume and sufficient filling of the cells is ensured, so that no impairment of the gloss occurs on the printing material.
Ein Vorteil ist ebenso, dass ausgehend von der Rasterwalze eine gleichmäßigere Schichtdicke der Beschichtungsflüssigkeit auf dem Bedruckstoff in einer Druckmaschine gewährleistet wird.An advantage is also that, starting from the anilox roller, a more uniform layer thickness of the coating liquid on the printing substrate in a printing press is ensured.
Ein weiterer Vorteil besteht darin, dass das Kammerrakel durch eine einfache Gestaltung der Kontur im Innenraum leicht reinigbar ist und die Bildung von Nestern zum Absetzen von Beschichtungsflüssigkeit spürbar reduziert ist. Die einfache Kontur ist weiterhin vorteilhaft, wenn eine Reinigung des Kammerrakel und ggf. der Rasterwalze erforderlich ist.A further advantage is that the chambered doctor blade can be easily cleaned by a simple design of the contour in the interior and the formation of nests for depositing coating liquid is noticeably reduced. The simple contour is also advantageous if a cleaning of the chambered doctor blade and possibly the anilox roller is required.
Darüber hinaus ist es von Vorteil, dass die Bildung von Luftbläschen innerhalb des Kammerrakels spürbar reduziert und ist bei Auftreten von Luftbläschen diese direkt aus dem Inneren des Kammerrakels mittels Rücklaufleitung abführbar sind. Durch den lösbaren Einsatz eines Profilkörpers innerhalb des Kammerraumes wird das Vordringen von Luftbläschen in das dem Arbeitsrakelblatt zugeordneten Reservoir, welches für den Befüllvorgang entscheidend ist, spürbar reduziert und das Entstehen derartiger Bläschen in diesem Reservoir selbst ist deutlich verringert. Dadurch wird eine stabile Beschichtung mit hohem Glanzgrad auf dem Bedruckstoff erzielt.In addition, it is advantageous that the formation of air bubbles within the chambered doctor blade noticeably reduced and, if air bubbles occur, they can be discharged directly from inside the chambered doctor blade by means of a return line. The detachable use of a profile body within the chamber chamber, the penetration of air bubbles in the working doctor blade associated reservoir, which is crucial for the filling, noticeably reduced, and the formation of such bubbles in this reservoir itself is significantly reduced. As a result, a stable coating with a high degree of gloss is achieved on the substrate.
Von Vorteil ist es schließlich, dass das Dosiersystem, speziell des Kammerrakel, - abhängig vom Beschichtungsauftrag - wahlweise mit einem einteiligen Reservoir (ohne Profilkörper) oder mit einem zweiteiligen Reservoir (mit Profilkörper) betreibbar ist. Hierzu ist der Profilkörper lösbar zumindest mit der Innenwand des Kammerraumes verbindbar.Finally, it is advantageous that the metering system, especially of the chambered doctor blade, can be operated optionally with a one-piece reservoir (without profile body) or with a two-part reservoir (with profile body), depending on the coating application. For this purpose, the profile body is releasably connectable at least with the inner wall of the chamber space.
Die Erfindung soll an einem Ausführungsbeispiel in Form einer Bogenrotationsdruckmaschine näher erläutert werden.The invention will be explained in more detail in an embodiment in the form of a sheet-fed rotary printing press.
Dabei zeigen schematisch:
- Fig. 1
- eine Beschichtungseinheit in einer Rotationsdruckmaschine,
- Fig. 2
- ein Dosiersystem,
- Fig. 3 a-e
- Querschnittsausbildungen eines Profilkörpers,
- Fig. 4 a-d
- Ausführungen für eine lösbare Verbindung.
- Fig. 1
- a coating unit in a rotary printing machine,
- Fig. 2
- a dosing system,
- Fig. 3 ae
- Cross-sectional formations of a profile body,
- Fig. 4 ad
- Versions for a detachable connection.
Ein Dosiersystem 5 bestehend aus einer gerasterten Auftragwalze 3 mit Näpfchen und Stegen und einem Kammerrakel 4 ist in einer Beschichtungseinheit einem Formzylinder 2 zugeordnet. Der Formzylinder 2 trägt beispielsweise ein Gummituch (Flachdruckform) oder eine flexible Hochdruckform und weist einen Zylinderkanal auf. Dieser Formzylinder 2 ist mit einem bogenführenden Druckzylinder 1 in Funktionsverbindung, wobei der Druckzylinder 1 bezogen auf den Formzylinder 2 doppelt groß ausgebildet ist und zwei diametral versetzt angeordnete Bogenhaltesysteme für den Bogentransport in Förderrichtung 6 aufweist.A
Der gerasterten Auftragwalze 3 ist in deren Drehrichtung 18 ein positiv angestelltes Schließrakelblatt 13 und ein negativ angestelltes Arbeitsrakelblatt 10, welche am Kammerrakel 4 angeordnet sind, zugeordnet. Das Kammerrakel 4 weist in an sich bekannter Weise ein Gehäuse mit stirnseitig angeordneten Begrenzungswänden auf, so dass zur gerasterten Auftragwalze 3 ein Kammerraum gebildet ist. Eine Zuführleitung 7 speist in ein zum Arbeitsrakelblatt 10 benachbartes Reservoir 11 (in Fig. 2 im unteren Bereich des Kammerraumes) eine Beschichtungsflüssigkeit ein und eine Rücklaufleitung 8 führt aus einem zum Schließrakelblatt 13 benachbarten Reservoir 12 (in Fig. 2 der obere Bereich des Kammerraumes) die überschüssige Beschichtungsflüssigkeit über ein nach oben offenes Auffangsystem 9 ab. Die Zuführ- und Rücklaufleitungen 7,8 werden mittels Förder- und Saugpumpe als Umlaufsystem betrieben.The
Ein achsparallel zur gerasterten Auftragwalze 3 innerhalb des Kammerraumes des Kammerrakels 4 angeordneter Profilkörper 14 ist mit seiner Rückseite 25 mittels einer lösbaren Verbindung 15 mit der Innenwand 16 des Kammerraumes verbunden. Dabei ist die Innenwand 16 bevorzugt eben ausgebildet und die der Innenwand 16 zugeordnete Rückseite 25 des Profilkörpers 14 ist ebenfalls eben ausgebildet. In einer Weiterbildung kann die Innenwand 16 selbst einen Teil des Profilkörpers 14 lösbar formschlüssig aufnehmen.
Der Kammerraum des Kammerrakels 4 zur Aufnahme der Beschichtungsflüssigkeit ist durch den wahlweisen Einsatz des lösbar angeordneten Profilkörpers 14 in ein erstes Reservoir 11 im Bereich des Arbeitsrakelblattes 10 und ein zweites Reservoir 12 im Bereich des Schließrakelblattes 13 gebildet. Der Profilkörper 14 erstreckt sich dabei bevorzugt über die volle Länge innerhalb des Kammerraumes der Kammerrakel 4 und ist zur benachbarten Auftragwalze 3 berührungsfrei angeordnet, so dass sich zwischen Profilkörper 14 und dem Umfang der Auftragwalze 3 ein Spalt 17 einstellt, derart, dass der Spalt 17 ausgehend vom Reservoir 11 zum Reservoir 12 von einer Beschichtungsflüssigkeit durchströmt werden kann.An axially parallel to the screened applicator roll 3 within the chamber chamber of the
The chamber space of the
Die lösbare Verbindung 15 zwischen Innenwand 16 und Profilkörper 14 ist bevorzugt durch Formschluss oder Kraftschluss erzielbar. In Fig. 4 sind beispielhaft einige Ausführungen gezeigt. Der Aufbau des kammerrakels 4 ist identisch zur Ausbildung gem. Fig. 2, allerdings sind aus Gründen der Übersichtlichkeit die Zuführleitung und die Rücklaufleitung 7,8 nicht gezeigt.
Eine kraftschlüssige Verbindung dieser Art ist beispielsweise mittels achsparallel zur Auftragwalze 3 an der Innenwand 16 und/oder dem Profilkörper 14 angeordneten Permanentmagneten erzielbar (Fig. 4a). In einer weiteren Ausbildung gem. Fig. 4b ist der Profilkörper 14 mit einem spreizbaren Klemmkörper verbunden, wobei der Klemmkörper innerhalb des Kammerraumes lösbar lagefixiert die lösbare Verbindung 15 darstellt. In Fig. 4c ist der Profilkörper 14 in einem Klemmkörper aufgenommen, welcher formschlüssig, z.B. mittels Schraubenverbindung, mit der Innenwand 16 die lösbare Verbindung 15 bildet. Gemäß Fig. 4d ist der Profilkörper 14 formschlüssig mittels einer Schraubenverbindung mit der Innenwand 16 als lösbare Verbindung 15 ausgebildet.The
A non-positive connection of this type can be achieved, for example, by means of permanent magnets arranged axially parallel to the
Ausbildungen des Querschnittes des Profilkörpers 14 sind beispielhaft in Fig. 3 gezeigt. Dabei ist gem. Fig. 3a der Profilkörper 14 mit in Richtung Spalt 17 konkaver Krümmung 19 der Seitenflächen ausgebildet und die Vorderseite weist ein Plateau 21 auf. Alternativ sind die Seitenflächen und oder das Plateau 21 mit konvexer Krümmung 20 ausgebildet.
Gem. Fig. 3b ist der Querschnitt des Profilkörpers 14 mit einer halbkreisförmigen Krümmung 22, gem. Fig. 3c als Dreieck 24, gem. Fig. 3d als Trapez 23 und gem. Fig. 3 e als Rechteck/Quadrat 26 ausgebildet, wobei stets ein Spalt 17 zwischen dem Profilkörper 14 und der Auftragwalze 3 besteht.Embodiments of the cross section of the
Gem. Fig. 3b is the cross section of the
Beispielsweise bei höheren Maschinengeschwindigkeiten und/oder bei Auftragwalzen 3 mit größerem Schöpfvolumenen ist der Profilkörper 14 an der Innenwand 16 mittels der lösbaren Verbindung 15 befestigbar. In Drehrichtung 18 der Auftragwalze 3 werden bereits im Reservoir 12 vorhandene Luftbläschen über die Rücklaufleitung 8 abgeführt, vorzugsweise abgesaugt. Der Profilkörper 14 verhindert weiterhin, das weitere Vordringen von Luftbläschen und je nach Beschichtungsflüssigkeit auch die mögliche Schaumbildung. Zusätzlich wird durch die zur Drehrichtung 18 der Auftragwalze 3 gegenläufige Strömungsrichtung der Beschichtungsflüssigkeit im Spalt 17 dem Vordringen der Luftbläschen entgegen gewirkt. Da der Spalt 17 im Verhältnis zu den Reservoiren 11, 12 relativ eng ist, erhöht sich der Druck der Beschichtungsflüssigkeit und verbessert die Befüllung der Näpfchen der Auftragwalze 3. Im Reservoir 11 erfolgt dann die endgültige Befüllung der Näpfchen mit Beschichtungsflüssigkeit und das negativ angestellte Arbeitsrakelblatt 10 streift die überschüssige Beschichtungsflüssigkeit von den Stegen der Auftragwalze 3 ab.For example, at higher machine speeds and / or
Für bestimmte Beschichtungsaufträge ist der Profilkörper 14 aus dem Kammerraum des Kammerrakels 4 entfernbar bzw. wieder einsetzbar.For certain coating jobs, the
- 11
- Druckzylinderpressure cylinder
- 22
- Formzylinderform cylinder
- 33
- Auftragwalzeapplicator roll
- 44
- Kammerrakelchambered doctor blade
- 55
- Dosiersystemdosing
- 66
- Förderrichtungconveying direction
- 77
- Zuführleitungfeed
- 88th
- RücklaufleitungReturn line
- 99
- Auffangsystemcollection system
- 1010
- ArbeitsrakelblattWorking doctor blade
- 1111
- Reservoirreservoir
- 1212
- Reservoirreservoir
- 1313
- SchließrakelblattClosing doctor blade
- 1414
- Profilkörperprofile body
- 1515
- lösbare VerbindungDetachable connection
- 1616
- Innenwandinner wall
- 1717
- Spaltgap
- 1818
- Drehrichtungdirection of rotation
- 1919
- konkave Krümmungconcave curvature
- 2020
- konvexe Krümmungconvex curvature
- 2121
- Plateauplateau
- 2222
- halbkreisförmige Krümmungsemi-circular curvature
- 2323
- Trapeztrapeze
- 2424
- Dreiecktriangle
- 2525
- Rückseiteback
- 2626
- Rechteck/QuadratRectangular / square
Claims (7)
- Metering system (5) for coating liquids in a coating unit, preferably for a printing machine or lacquering machine, with a chamber-type doctor-blade assembly (4) and with an assigned applicator roller (3) provided with wells and webs, the chamber-type doctor-blade assembly (4) having at least one supply line (7) feeding into the chamber space, one return line (8), leading away from the chamber space, for the coating liquid, and one profile body (14) extending axially in the chamber space on the inner wall (16) between the supply line (7) and the return line (8), a gap (17) being formed between the profile body (14) and the applicator roller (3), and the profile body (14) separating the chamber space into a first reservoir (11) and a second reservoir (12) which are connected by means of the gap, characterized in that the profile body (14) forms with the inner wall (16) a releasable connection (15) and can be used selectively on the inner wall (16) of the chamber-type doctor-blade assembly (4), in that, when the profile body (14) is used, the first reservoir (11) is assigned in the direction of rotation of the applicator roller (3) to a negatively set working doctor-blade (10) and the supply line (7) is arranged so as to feed into the first reservoir (11), and in that the direction of flow of the coating liquid in the gap (17) is contrary to the direction of rotation of the applicator roller (3).
- Metering system according to Claim 1, characterized in that the releasable connection (15) is positive or non-positive.
- Metering system according to Claim 2, characterized in that the positively releasable connection (15) is a screw connection or a snap connection.
- Metering system according to Claim 2, characterized in that the non-positively releasable connection (15) is a permanent-magnetic connection.
- Metering system according to Claim 1, characterized in that the profile body (14) has with a planar rear side (25) a cross section in the form of a rectangle/square (26) and the inner wall (16) is planar.
- Metering system according to Claim 1, characterized in that the profile body (14) has with a planar rear side (25) a cross section with a concave curvature (19) or a convex curvature (20) in relation to the gap (17).
- Metering system according to Claim 1, characterized in that the profile body (14) has with a planar rear side (25) a cross section in the form of a triangle (24) or trapezium (23) in relation to the gap (17).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29922546U DE29922546U1 (en) | 1999-12-22 | 1999-12-22 | Dosing system for coating liquids in a coating unit |
| DE29922546U | 1999-12-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1110728A1 EP1110728A1 (en) | 2001-06-27 |
| EP1110728B1 true EP1110728B1 (en) | 2007-01-31 |
Family
ID=8083371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00127631A Expired - Lifetime EP1110728B1 (en) | 1999-12-22 | 2000-12-16 | Metering device for coating liquids in a coating unit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1110728B1 (en) |
| AT (1) | ATE353048T1 (en) |
| DE (2) | DE29922546U1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0020279D0 (en) * | 2000-08-18 | 2000-10-04 | Mead Corp | Substrate coating |
| DE10164773A1 (en) | 2001-09-03 | 2003-07-17 | Kroenert Max Maschf | Pressure chamber doctor blade |
| ITPC20050018A1 (en) * | 2005-04-04 | 2006-10-05 | Nordmeccanica Spa | COATING GROUP FOR COUPLING MACHINES WITH ADHESIVE RECIRCULATION SYSTEMS |
| DE102007011630A1 (en) * | 2007-03-09 | 2008-09-11 | OCé PRINTING SYSTEMS GMBH | Device for applying a fluid to a printing substrate |
| DE102008019433A1 (en) * | 2008-04-17 | 2009-12-03 | Hauni Maschinenbau Ag | Gluing of strips of material of the tobacco processing industry |
| CN106694316B (en) * | 2015-07-20 | 2019-03-15 | 宜兴威尼特集装袋有限公司 | Paper bag beats cylinder machine point glue equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0368485A3 (en) * | 1988-10-31 | 1991-01-30 | Seiken Graphics, Inc. | Improvements in or relating to lithographic printing |
| DK0568674T3 (en) | 1991-11-26 | 1996-12-23 | Namic Bv | Color chamber radicle for a color transferring body |
| US5239925A (en) * | 1992-06-02 | 1993-08-31 | Ronald L. Harper | Ink distribution apparatus |
| US5425809A (en) | 1993-06-17 | 1995-06-20 | Howard W. DeMoore | Anilox coater with brush |
| DE4444034C2 (en) * | 1994-12-10 | 1997-07-03 | 4 P Folie Forchheim Gmbh | Device for applying a highly viscous medium |
| US5826509A (en) * | 1995-10-18 | 1998-10-27 | Deneka; P. Kenneth | Printing coating head device |
| DE19754684A1 (en) * | 1997-12-10 | 1999-06-17 | Pagendarm Technologie Gmbh | Device for application of fluid or paste medium, especially adhesive |
-
1999
- 1999-12-22 DE DE29922546U patent/DE29922546U1/en not_active Expired - Lifetime
-
2000
- 2000-12-16 AT AT00127631T patent/ATE353048T1/en not_active IP Right Cessation
- 2000-12-16 EP EP00127631A patent/EP1110728B1/en not_active Expired - Lifetime
- 2000-12-16 DE DE50014022T patent/DE50014022D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1110728A1 (en) | 2001-06-27 |
| ATE353048T1 (en) | 2007-02-15 |
| DE29922546U1 (en) | 2000-02-17 |
| DE50014022D1 (en) | 2007-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3823340C1 (en) | ||
| EP0278225B1 (en) | Short-inking device | |
| EP0936065B1 (en) | Apparatus for applying a liquid on a printed sheet, particularly printing or coating unit in rotary sheet printing machine | |
| DE19717727B4 (en) | Inking unit for a rotary printing machine | |
| DE3427898C1 (en) | Device for applying liquids, in particular coating unit for a printing press | |
| DE4311834C2 (en) | Device for coating substrates in printing machines | |
| EP1110728B1 (en) | Metering device for coating liquids in a coating unit | |
| EP0549934A1 (en) | Coating device for viscous coating materials | |
| EP0663289B1 (en) | Method and means for filling cavities, like small pits or veins on the surface of a cylindrical rotary object | |
| EP1056598B1 (en) | Sheet-fed letterpress rotary with printing units for multicolour printing and at least one coating unit | |
| EP1200261B1 (en) | Coating device of a printing machine | |
| DE10257373A1 (en) | Coating system for coating print carriers, has pump and selection valve assembled into modular supply unit constructed to be compatible with both metering devices | |
| EP1467865A2 (en) | Device for inking a roller | |
| EP1389523B1 (en) | Printing or coating machine | |
| EP0659557A1 (en) | Device for metering a liquid in an offset printing machine particularly a lacquering device | |
| DE102005015197B4 (en) | Printing machine with at least one printing unit | |
| EP0924073B1 (en) | Device for metering a coating fluid for print carriers in a printing machine | |
| EP0657282B1 (en) | Inking device | |
| CH695726A5 (en) | Roll doctor device. | |
| EP1442884B1 (en) | Method for stably guiding a partial width web in a printing unit of a printing press | |
| EP1911581A2 (en) | Ink dosage device for an inking system | |
| DE102007061057A1 (en) | Commissioned work with a metering device | |
| DE102005062897A1 (en) | Printing machine with at least one printing unit | |
| EP2045077A2 (en) | Equipment for inking an screen roller of a rotary printing press | |
| EP1149700B1 (en) | Metering system for a coating unit in a printing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20010406 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE FR GB LI |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| AKX | Designation fees paid |
Free format text: AT BE CH DE GB LI |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): AT CH DE FR GB LI |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): AT CH DE FR GB LI |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE FR GB LI |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 50014022 Country of ref document: DE Date of ref document: 20070322 Kind code of ref document: P |
|
| GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20070131 |
|
| EN | Fr: translation not filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070131 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20071101 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070921 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071231 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071231 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070131 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20081215 Year of fee payment: 9 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091216 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 50014022 Country of ref document: DE Owner name: MANROLAND SHEETFED GMBH, DE Free format text: FORMER OWNER: MANROLAND AG, 63075 OFFENBACH, DE Effective date: 20120509 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20131220 Year of fee payment: 14 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50014022 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150701 |