EP0770479B1 - Zonal inking knife for a rotary printing machine - Google Patents
Zonal inking knife for a rotary printing machine Download PDFInfo
- Publication number
- EP0770479B1 EP0770479B1 EP96114210A EP96114210A EP0770479B1 EP 0770479 B1 EP0770479 B1 EP 0770479B1 EP 96114210 A EP96114210 A EP 96114210A EP 96114210 A EP96114210 A EP 96114210A EP 0770479 B1 EP0770479 B1 EP 0770479B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ink
- ink blade
- blade
- material coating
- knife
- 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
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
- B41F9/08—Wiping mechanisms
- B41F9/10—Doctors, scrapers, or like devices
- B41F9/1072—Blade construction
-
- 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
- B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2231/00—Inking devices; Recovering printing ink
- B41P2231/12—Axially segmented ink blades
Definitions
- the invention relates to a color meter for a Rotary printing press that in the ink fountain of an inking unit Rotary printing machine can be arranged and the stripping of Printing ink from an ink fountain roller of the inking unit, the free end area to be assigned to the ink fountain roller of the color knife for zonal division several slots has, whereby a corresponding number of individual knives is trained.
- Such color knives are known. You are within the inking unit of the rotary printing press and serve to make the color film as thin as possible for printing To make available. Due to the zonal division of the Color knives are individual knives that are individually designed Regarding the ink fountain roller are adjustable, making the Color film layer thickness of the individual zone depending on the subject can be specified. Each individual knife is preferably one Actuator assigned around the gap width of the area between the end of each free end of one Single knife and the surface of the ink fountain roller from Control center of the machine. The Color film layer thickness of each zone is therefore the circumstances adaptable, often to achieve good printing results a relatively thin layer thickness is desired.
- the Layer thickness is dependent on the one hand on the setting of the Actuator and on the other hand also from the system position of the respective individual knife to the ink fountain roller. Print quality is not just a matter of setting it up correctly of the respective individual knife to the ink fountain roller.
- Print quality is not just a matter of setting it up correctly
- Single knife determines, but also requires that with the ink fountain roller interacting edges of the individual knife adapted to the contour of the ink fountain roller are, in particular to have a correct orientation to the lateral surface.
- a properly set up single knife should be used keep its parameters unchanged for as long as possible.
- US 3,699,888 and DE 37 07 570 known zonal color meters have shortcomings in this regard.
- GB 2 128 551 A shows a color knife with a wear-resistant surface.
- a knife or a scraper used for cleaning purposes comprises a thin flexible one Steel material, which has a working surface, which with a thin Surface coating of a material is provided, which is a higher Has wear resistance than the steel material itself.
- the wear-resistant material can be a ceramic material, metal oxides or metal carbides for example.
- the invention is therefore based on the object of a color knife of the type mentioned To create a way that has a high reproducibility over a long period of time and also ensures optimal print quality.
- This object is achieved in that the contact zones of the Single knife with the ink fountain roller with one on a base body of the ink knife arranged hard material coating are provided. Due to the hard material coating ensures that on the one hand one of the corresponding lateral surface of the ink fountain roller optimally adapted and essentially resistant to wear and tear Surface is present. Long operating times are possible without any adjustment work must be carried out. The reproducibility of the work result is therefore given. At the same time, the coating allows a particularly thin one Color layer formation, if this thin layer thickness is desired.
- the preferably formed as a one-piece component body of the Color knife is provided with the hard material coating, although a zonal division, in other words, the formation of several individual knives, between which there are slots, so that individual adjustment of the individual knives is possible.
- the hard material coating can be done without, for example a single knife adjustment to problems in the edge area of the Coating, for example, leads to chipping.
- the hard material coating as a ceramic coating is trained.
- the ceramic coating has titanium dioxide (TiO 2 ).
- the ceramic coating has Al 2 O 3 .
- each individual knife as Bevel is formed in the free end area of the color knife is.
- the base body can in particular be made of metal, preferably made of steel.
- each slot is from one of the free End of the color knife outgoing narrow slot and one yourself adjoining wide slot is formed.
- a “Narrow slot” is a slot with very little Slot width to understand while a "wide slot” one has a larger slot width.
- the wide slots are preferably elastic Material closed. The elasticity of this material allows a single knife setting despite the seal, that means a relative movement to the respective one Neighbor single knife. Takes place within the narrow slot no sealing measure by introducing sealing material.
- the slot width of the narrow slot is preferably such chosen so that the ink does not pass through.
- the hard material coating is preferably only on the top of the color knife, but not in the area of the Slots, especially in the area of the narrow slots or the wide slots.
- Figure 1 shows a - in a schematic representation Color knife 1, which is within a not shown Color box is located.
- the color knife 1 has a cross section seen- about trapezoidal shape, that is, Top 2 and bottom 3 converge to the free end 4 there.
- a bevel 5 formed by the end face of the free end 4th goes out and extends to the top 2.
- the Bevel 5 on the top 2 of the color knife 1 or part of it forms a contact zone 6 with the outer surface 7 of an ink fountain roller 8 of the inking unit.
- the top view of FIG. 2 shows that the color knife 1 is designed as a zonal color meter, that is, it will by means of several, preferably parallel to each other running, spaced slots 9 in individual knife 10 divided.
- the slots 9 go from the free end 4 of the Color knife 1 and extend into the area a fastening zone 11, which is the assembly of the color knife 1 in the color box. Due to the slots 9, the Single knife 10 cut free so that they are individual by means of suitable actuators, not shown are adjustable, that is, the training of Ink layer thickness can be set zonally.
- the The exemplary embodiment shown in FIG. 2 is thirty Individual knife 10 and thus thirty color zones are provided.
- FIG. 3 illustrates that on the Top 2 of the color knife 1 has a hard material coating 12 is applied.
- This hard material coating 12 is located is on the bevel 5 and extends from there over part of the length of the individual knives 10.
- the color knife 1 has a base body 13 made of steel, which was initially hardened and then tempered again at least in the area of the hard material coating 12
- Intermediate layer 14 is applied, which has nickel, preferably formed as a nickel-chrome intermediate layer is. The addition of nickel-chrome improves the Bending properties, like that Corrosion resistance.
- the hard material coating 12 is applied.
- Top 2 runs the bottom 3 of the base body 13 in the free end 4 facing away parallel to the top and in the front free end area at an angle ⁇ of 2 ° to 10 °, preferably 5.5 °.
- the angle ⁇ is between that parallel to the top 2 area of the Underside 3 and the subsequent inclined surface 15 ( Figure 3) trained. It can also be seen from FIG. 3 that the top 2 with the bevel 5 an angle of 15 ° up to 35 ° preferably 25 °. This angle is marked with ⁇ .
- FIG. 4 illustrates that the slots 9 consist of two Assemble parts, namely one from the free end 4 outgoing narrow slot 16, which in a wide slot 17th transforms.
- the narrow slot 16 has only a very small one Slot width of preferably 0.03 to 0.06 mm.
- Of the Wide slot 17 in particular has a slot width of 3 mm and is closed with an elastic material 18.
- the elastic material is preferably Polyurethane or other suitable material. This Material prevents color from the slot 17 can run out, but guarantees mobility of the Single knife 10.
- Inside the narrow slot 16 is neither the hard material coating 12 nor elastic material 18.
- the hard material coating 12 runs only over one Part of the top 2, and only on the Ink fountain roller 8 side facing.
- the Hard material coating 12 ends in the area of Wide slots 17 (reference numeral 19) and thus covers the Area that has the narrow slots 16.
- the hard material coating 12 is preferably designed as a ceramic coating.
- it has titanium dioxide (TiO 2 ).
- It can also have aluminum.
- it is provided that it has a mixture of Al 2 O 3 and a few percent titanium dioxide TiO 2 , for example 1-5% (TiO 2 ). It is preferably applied by means of a plasma process.
- FIG. 6 shows the wear of a Color meter as a function of operating time.
- curve C shows the wear of one conventional color meter as a function of operating time.
- Curve C shows a significantly higher wear compared with that the color knife 1 according to the present Invention experiences, even after only a short use.
- curve B shows the level of wear, up to which conventional color meter is generally used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Adjustable Resistors (AREA)
- Rotary Presses (AREA)
- Pens And Brushes (AREA)
- Impression-Transfer Materials And Handling Thereof (AREA)
Abstract
Description
Die Erfindung betrifft ein Farbmesser für eine Rotationsdruckmaschine, das im Farbkasten eines Farbwerks der Rotationsdruckmaschine anordenbar ist und dem Abstreifen von Druckfarbe von einer Farbkastenwalze des Farbwerks dient, wobei der der Farbkastenwalze zuzuordnende freie Endbereich des Farbmessers zur zonalen Unterteilung mehrere Schlitze aufweist, wodurch eine entsprechende Anzahl von Einzelmessern ausgebildet ist.The invention relates to a color meter for a Rotary printing press that in the ink fountain of an inking unit Rotary printing machine can be arranged and the stripping of Printing ink from an ink fountain roller of the inking unit, the free end area to be assigned to the ink fountain roller of the color knife for zonal division several slots has, whereby a corresponding number of individual knives is trained.
Derartige Farbmesser sind bekannt. Sie befinden sich innerhalb des Farbwerks der Rotationsdruckmaschine und dienen dazu, einen möglichst dünnen Farbfilm für den Druck zur Verfügung zu stellen. Aufgrund der zonalen Einteilung des Farbmessers sind Einzelmesser ausgebildet, die individuell im Bezug auf die Farbkastenwalze einstellbar sind, wodurch die Farbfilm-Schichtdicke der einzelnen Zone je nach Sujet vorgebbar ist. Vorzugsweise ist jedem Einzelmesser ein Aktuator zugeordnet um die Spaltbreite des Bereiches zwischen dem Ende jedes einzelnen freien Endes eines Einzelmessers und der Oberfläche der Farbkastenwalze vom Leitstand der Maschine aus einstellen zu können. Die Farbfilm-Schichtdicke jeder Zone ist somit den Gegebenheiten anpaßbar, wobei zur Erzielung guter Druckergebnisse oftmals eine relativ dünne Schichtdicke angestrebt wird. Die Schichtdicke wird einerseits von der Einstellung des Aktuators und andererseits jedoch auch von der Anlagestellung des jeweiligen Einzelmessers zur Farbkastenwalze bestimmt. Die Druckqualität wird nicht nur von dem korrekten Einrichten des jeweiligen Einzelmessers zur Farbkastenwalze bestimmt.Such color knives are known. You are within the inking unit of the rotary printing press and serve to make the color film as thin as possible for printing To make available. Due to the zonal division of the Color knives are individual knives that are individually designed Regarding the ink fountain roller are adjustable, making the Color film layer thickness of the individual zone depending on the subject can be specified. Each individual knife is preferably one Actuator assigned around the gap width of the area between the end of each free end of one Single knife and the surface of the ink fountain roller from Control center of the machine. The Color film layer thickness of each zone is therefore the circumstances adaptable, often to achieve good printing results a relatively thin layer thickness is desired. The Layer thickness is dependent on the one hand on the setting of the Actuator and on the other hand also from the system position of the respective individual knife to the ink fountain roller. Print quality is not just a matter of setting it up correctly of the respective individual knife to the ink fountain roller.
Die Druckqualität wird nicht nur von dem korrekten Einrichten des jeweiligen Einzelmessers bestimmt, sondern erfordert ferner, daß die mit der Farbkastenwalze zusammenwirkenden Kanten der Einzelmesser der Kontur der Farbkastenwalze angepaßt sind, insbesondere zur Mantelfläche eine korrekte Ausrichtung aufweisen. Um über lange Zeit reproduzierbare Ergebnisse zu erhalten, sollte ein korrekt eingerichtetes Einzelmesser möglichst lange unverändert seine Parameter beibehalten. Bei den aus US 3,699,888 und DE 37 07 570 bekannten zonalen Farbmessern bestehen in dieser Hinsicht Mängel.Print quality is not just a matter of setting it up correctly Single knife determines, but also requires that with the ink fountain roller interacting edges of the individual knife adapted to the contour of the ink fountain roller are, in particular to have a correct orientation to the lateral surface. To over long To get time reproducible results, a properly set up single knife should be used keep its parameters unchanged for as long as possible. In the from US 3,699,888 and DE 37 07 570 known zonal color meters have shortcomings in this regard.
GB 2 128 551 A zeigt ein Farbmesser mit einer verschleißfesten Oberfläche. Ein Messer oder ein Abstreifer, welcher zu Reinigungszwecken dient, umfaßt ein dünnes flexibles Stahlmaterial, welches eine Arbeitsoberfläche aufweist, welches mit einer dünnen Oberflächenbeschichtung eines Materials versehen ist, welches eine höhere Verschleißfestigkeit hat als das Stahlmaterial selbst. Das verschleißfeste Material kann ein keramisches Material, Metalloxide oder Metallkarbide zum Beispiel sein.GB 2 128 551 A shows a color knife with a wear-resistant surface. A knife or a scraper used for cleaning purposes comprises a thin flexible one Steel material, which has a working surface, which with a thin Surface coating of a material is provided, which is a higher Has wear resistance than the steel material itself. The wear-resistant material can be a ceramic material, metal oxides or metal carbides for example.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Farbmesser der eingangs genannten Art zu schaffen, das eine hohe Reproduzierbarkeit über eine lange Zeitdauer mit sich bringt und überdies optimale Druckqualität gewährleistet.The invention is therefore based on the object of a color knife of the type mentioned To create a way that has a high reproducibility over a long period of time and also ensures optimal print quality.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Berührungszonen der Einzelmesser mit der Farbkastenwalze mit einer auf einem Grundkörper des Farbmessers angeordnete Hartstoff-Beschichtung versehen sind. Durch die Hartstoff-Beschichtung ist gewährleistet, daß einerseits eine der entsprechenden Mantelfläche der Farbkastenwalze optimal angepaßte und gegen Abnutzungserscheinungen im wesentlichen resistente Oberfläche vorliegt. Lange Betriebszeiten sind möglic-h, ohne daß Nachstellarbeiten durchgeführt werden müssen. Die Reproduzierbarkeit des Arbeitsergebnisses ist damit gegeben. Gleichzeitig erlaubt die Beschichtung eine besonders dünne Farbschichtausbildung, sofern diese dünne Schichtdicke gewünscht ist. Von Besonderheit ist, daß der vorzugsweise als einstückiges Bauteil ausgebildete Grundkörper des Farbmessers mit der Hartstoff-Beschichtung versehen ist, obwohl eine zonale Unterteilung, also die Ausbildung von mehreren Einzelmessern vorliegt, zwischen denen Schlitze liegen, damit eine individuelle Einstellung der Einzelmesser möglich ist. Erfindungsgemäß hat sich gezeigt, daß trotz zumeist nur sehr kleiner Schlitzbreite der zwischen den Einzelmessern liegenden Schlitze eine Hartstoff-Beschichtung erfolgen kann, ohne daß zum Beispiel eine Einzelmesserverstellung zu Problemen im Randbereich der Beschichtung, beispielsweise zu dessen Abplatzen, führt.This object is achieved in that the contact zones of the Single knife with the ink fountain roller with one on a base body of the ink knife arranged hard material coating are provided. Due to the hard material coating ensures that on the one hand one of the corresponding lateral surface of the ink fountain roller optimally adapted and essentially resistant to wear and tear Surface is present. Long operating times are possible without any adjustment work must be carried out. The reproducibility of the work result is therefore given. At the same time, the coating allows a particularly thin one Color layer formation, if this thin layer thickness is desired. Of specialty is that the preferably formed as a one-piece component body of the Color knife is provided with the hard material coating, although a zonal division, in other words, the formation of several individual knives, between which there are slots, so that individual adjustment of the individual knives is possible. According to the invention It has been shown that, despite the slot width being mostly very small slots between the individual knives Hard material coating can be done without, for example a single knife adjustment to problems in the edge area of the Coating, for example, leads to chipping.
Nach einer Weiterbildung der Erfindung ist vorgesehen, daß die Hartstoff-Beschichtung als Keramik-Beschichtung ausgebildet ist.According to a development of the invention, it is provided that the hard material coating as a ceramic coating is trained.
Vorteilhaft ist es ferner, wenn die Keramik-Beschichtung Titandioxid (TiO2) aufweist. Insbesondere kann vorgesehen sein, daß die Keramik-Beschichtung Al2O3 aufweist.It is also advantageous if the ceramic coating has titanium dioxide (TiO 2 ). In particular, it can be provided that the ceramic coating has Al 2 O 3 .
Eine sehr gute Verbindung mit dem Grundkörper ergibt sich dann, wenn die Keramik-Beschichtung auf eine Zwischenschicht aufgebracht ist, die Nickel aufweist, insbesondere als Nickel-Chrom-Zwischenschicht ausgebildet ist, wobei sich die Zwischenschicht zwischen dem Grundkörper und der Hartstoff-Beschichtung befindet.There is a very good connection with the base body then when the ceramic coating is on an intermediate layer is applied, which has nickel, in particular as Nickel-chrome intermediate layer is formed, the Intermediate layer between the base body and the Hard material coating is located.
Nach einem bevorzugten Ausführungsbeispiel der Erfindung ist vorgesehen, daß die Berührungszone jedes Einzelmessers als Abschrägung im freien Endbereich des Farbmessers ausgebildet ist. Der Grundkörper kann insbesondere aus Metall, vorzugsweise aus Stahl, bestehen.According to a preferred embodiment of the invention provided that the contact zone of each individual knife as Bevel is formed in the free end area of the color knife is. The base body can in particular be made of metal, preferably made of steel.
Vorteilhaft ist es, wenn jeder Schlitz von einem vom freien Ende des Farbmessers ausgehenden Engschlitz und einem sich daran anschließenden Weitschlitz gebildet ist. Unter einem "Engschlitz" ist ein Schlitz mit nur sehr geringer Schlitzbreite zu verstehen, während ein "Weitschlitz" eine größere Schlitzweite aufweist. Um zu verhindern, daß Druckfarbe durch die Weitschlitze aus dem Farbkasten austritt, sind die Weitschlitze vorzugsweise mit elastischem Material verschlossen. Die Elastizität dieses Materials erlaubt trotz der Abdichtung eine Einzelmessereinstellung, das heißt eine Relativbewegung zum jeweiligen Nachbar-Einzelmesser. Innerhalb des Engschlitzes erfolgt keine Abdichtmaßnahme durch Einbringen von Dichtmaterial. Vorzugsweise ist die Schlitzweite des Engschlitzes derart gewählt, daß kein Passieren der Druckfarbe erfolgt.It is advantageous if each slot is from one of the free End of the color knife outgoing narrow slot and one yourself adjoining wide slot is formed. Under a "Narrow slot" is a slot with very little Slot width to understand while a "wide slot" one has a larger slot width. To prevent that Printing ink through the wide slots from the ink fountain emerges, the wide slots are preferably elastic Material closed. The elasticity of this material allows a single knife setting despite the seal, that means a relative movement to the respective one Neighbor single knife. Takes place within the narrow slot no sealing measure by introducing sealing material. The slot width of the narrow slot is preferably such chosen so that the ink does not pass through.
Bevorzugt befindet sich die Hartstoff-Beschichtung nur auf der Oberseite des Farbmessers, nicht jedoch im Bereich der Schlitze, insbesondere im Bereich der Engschlitze beziehungsweise der Weitschlitze.The hard material coating is preferably only on the top of the color knife, but not in the area of the Slots, especially in the area of the narrow slots or the wide slots.
Die Zeichnungen veranschaulichen die Erfindung und zwar zeigt:
- Figur 1
- eine schematische Darstellung der Anlage eines Farbmessers an der Mantelfläche einer Farbkastenwalze,
Figur 2- eine Draufsicht auf das zonale Farbmesser,
Figur 3- eine Seitenansicht auf das Farbmesser der
Figur 2 in Richtung des Pfeiles III, Figur 4- eine Detailansicht auf die Oberseite des Farbmessers,
Figur 5- eine Schnittansicht entlang der Linie V-V in
Figur 4, - Figur 6
- ein Diagramm, in welchem die Abnutzung von Farbmessern als Funktion der Zeit aufgetragen ist.
- Figure 1
- 1 shows a schematic representation of the installation of an ink knife on the outer surface of an ink fountain roller,
- Figure 2
- a top view of the zonal color meter,
- Figure 3
- 3 shows a side view of the color knife of FIG. 2 in the direction of arrow III,
- Figure 4
- a detailed view of the top of the color knife,
- Figure 5
- 3 shows a sectional view along the line VV in FIG. 4,
- Figure 6
- a diagram in which the wear of color meters is plotted as a function of time.
Figur 1 zeigt -in schematischer Darstellung- ein
Farbmesser 1, das sich innerhalb eines nicht dargestellten
Farbkastens befindet. Das Farbmesser 1 weist -im Querschnitt
gesehen- etwa trapezförmige Gestalt auf, das heißt,
Oberseite 2 und Unterseite 3 konvergieren zum freien Ende 4
hin.Figure 1 shows a - in a schematic representation
Color knife 1, which is within a not shown
Color box is located. The color knife 1 has a cross section
seen- about trapezoidal shape, that is,
Top 2 and
Im Bereich des freien Endes 4 ist eine Abschrägung 5
ausgebildet, die von der Stirnseite des freien Endes 4
ausgeht und sich bis zur Oberseite 2 erstreckt. Die
Abschrägung 5 an der Oberseite 2 des Farbmessers 1
beziehungsweise ein Teil von ihr bildet eine Berührungszone 6
mit der Mantelfläche 7 einer Farbkastenwalze 8 des Farbwerks.In the area of the
Die Draufsicht der Figur 2 verdeutlicht, daß das Farbmesser 1
als zonales Farbmesser ausgebildet ist, das heißt, es wird
mittels mehrerer, vorzugsweise parallel zueinander
verlaufender, beabstandeter Schlitze 9 in Einzelmesser 10
unterteilt. Die Schlitze 9 gehen vom freien Ende 4 des
Farbmessers 1 aus und erstrecken sich bis in den Bereich
einer Befestigungszone 11, die der Montage des Farbmessers 1
im Farbkasten dient. Aufgrund der Schlitze 9 werden die
Einzelmesser 10 freigeschnitten, so daß sie individuell
mittels geeigneter, nicht dargestellter Aktuatoren
einstellbar sind, das heißt, die Ausbildung der
Druckfarben-Schichtdicke läßt sich zonal einstellen. Im
gezeigten Ausführungsbeispiel der Figur 2 sind dreißig
Einzelmesser 10 und somit dreißig Farbzonen vorgesehen.The top view of FIG. 2 shows that the color knife 1
is designed as a zonal color meter, that is, it will
by means of several, preferably parallel to each other
running, spaced
Die Detailansicht der Figur 3 verdeutlicht, daß auf der
Oberseite 2 des Farbmessers 1 eine Hartstoff-Beschichtung 12
aufgebracht ist. Diese Hartstoff-Beschichtung 12 befindet
sich auf der Abschrägung 5 und erstreckt sich von dort aus
über einen Teil der Länge der Einzelmesser 10. Vorzugsweise
weist das Farbmesser 1 einen Grundkörper 13 aus Stahl auf,
der zunächst gehärtet und danach wieder angelassen wurde, auf
dem -zumindest im Bereich der Hartstoff-Beschichtung 12- eine
Zwischenschicht 14 aufgebracht ist, die Nickel aufweist,
vorzugsweise als Nickel-Chrom-Zwischenschicht ausgebildet
ist. Die Nickel-Chrom-Beigabe verbessert insbesondere die
Biegeeigenschaften, wie auch die
Korrosionswiderstandsfähigkeit. Auf diese Zwischenschicht 14
ist die Hartstoff-Beschichtung 12 aufgebracht. Gegenüber der
Oberseite 2 verläuft die Unterseite 3 des Grundkörpers 13 im
dem freien Ende 4 abgewandten Bereich parallel zur Oberseite
und im vorderen freien Endbereich unter einem Winkel α von
2° bis 10°, vorzugsweise 5,5°. Der Winkel α ist zwischen dem
parallel zur Oberseite 2 verlaufenden Bereich der
Unterseite 3 und der dann anschließenden Schrägfläche 15
(Figur 3) ausgebildet. Ferner geht aus Figur 3 hervor, daß
die Oberseite 2 mit der Abschrägung 5 einen Winkel von 15°
bis 35° vorzugsweise 25° aufweist. Dieser Winkel ist
mit β gekennzeichnet.The detailed view of Figure 3 illustrates that on the
Die Figur 4 verdeutlicht, daß sich die Schlitze 9 aus zwei
Teilen zusammensetzen, nämlich jeweils ein vom freien Ende 4
ausgehender Engschlitz 16, der in einen Weitschlitz 17
übergeht. Der Engschlitz 16 weist nur eine sehr geringe
Schlitzbreite von vorzugsweise 0,03 bis 0,06 mm auf. Der
Weitschlitz 17 hat insbesondere eine Schlitzbreite von 3 mm
und ist mit einem elastischen Material 18 verschlossen.
Vorzugsweise handelt es sich bei dem elastischen Material um
Polyuretan oder einem anderen geeigneten Material. Dieses
Material verhindert, daß Farbe aus dem Weitschlitz 17
herauslaufen kann, garantiert jedoch eine Bewegbarkeit der
Einzelmesser 10. Innerhalb des Engschlitzes 16 befindet sich
weder die Hartstoff-Beschichtung 12 noch elastisches Material
18. Die Hartstoff- Beschichtung 12 verläuft nur über einen
Teilbereich der Oberseite 2, und zwar nur auf der der
Farbkastenwalze 8 zugewandten Seite. Die
Hartstoff-Beschichtung 12 endet im Bereich der
Weitschlitze 17 (Bezugszeichen 19) und bedeckt somit den
Bereich, der die Engschlitze 16 aufweist.FIG. 4 illustrates that the
Die Hartstoff-Beschichtung 12 ist vorzugsweise als
Keramik-Beschichtung ausgebildet. Insbesondere weist sie
Titandioxid (TiO2) auf. Ferner kann sie Aluminium aufweisen.
Insbesondere ist vorgesehen, daß sie ein Gemisch von Al2O3
und wenigen Prozenten Titandioxid TiO2 aufweist, z.B.
1-5% (TiO2). Bevorzugt wird sie mittels Plasmaverfahren
aufgebracht.The
Die Grafik gemäß Figur 6 zeigt den Verschleiß eines Farbmessers als Funktion der Betriebszeit.6 shows the wear of a Color meter as a function of operating time.
Unmittelbar nach Inbetriebnahme paßt sich die
Hartstoffbeschichtung 12 in optimaler Weise an die Kontur der
Oberfläche der Farbkastenwalze 8 an. Dies erfolgt dergestalt
daß keine Nachbearbeitungen notwendig werden, wie etwa bei
einer Montage mit Klemmelementen für das Farbmesser, wobei
die Einspannkräfte von unten auf das Farbmesser einwirken.
Wie der Kurvenverlauf der Kurve A zeigt, ist der Verschleiß
während der Betriebszeit sehr gering. Es ist erkennbar, daß
das Farbmesser noch für längere Zeit benutzt werden kann.
Selbst nach ca. 500 h Betriebszeit ist der Verschleiß der
Hartstoffbeschichtung 12 noch moderat.Immediately after commissioning, the
Zum Vergleich verdeutlicht Kurve C den Verschleiß eines konventionellen Farbmessers als Funktion der Betriebszeit. Kurve C zeigt einen deutlich höheren Verschleiß verglichen mit dem, den das Farbmesser 1 gemäß der vorliegenden Erfindung erfährt, selbst nach einem nur kurzen Einsatz.For comparison, curve C shows the wear of one conventional color meter as a function of operating time. Curve C shows a significantly higher wear compared with that the color knife 1 according to the present Invention experiences, even after only a short use.
Kurve B schließlich zeigt das Verschleißniveau an, bis zu welchem konventionelle Farbmesser generell eingesetzt werden.Finally, curve B shows the level of wear, up to which conventional color meter is generally used.
Claims (10)
- Ink blade in a rotary printing press for scraping ink from an ink fountain roller of the inking unit, which can be disposed at the ink fountain in the inking unit of the rotary printing press, the free end section of said ink blade being associated with the ink fountain roller and comprising a plurality of slits to create a zonal segmentation of said ink blade, thus forming a corresponding number of individual blades,
wherein the contact areas (6) of the individual blades (10) and the ink fountain roller (8) comprise a hard-material coating (12) applied to the base body (13) of the ink blade (1) and that each of the slits (9) consists of a narrow slit (16) starting at the free end section (4) of the ink blade (1) and a wide slit (17) adjoining said narrow slit (16), said wide slit (17) being sealed with an elastic material (18). - Ink blade according to claim 1,
wherein said hard-material coating (12) is a ceramic coating with flexing properties. - Ink fountain blade according to any one of the preceding claims,
wherein the ceramic coating contains TiO2. - Ink blade according to any one of the preceding claims,
wherein the ceramic coating contains Al2O3. - Ink blade according to any one of the preceding claims,
wherein the hard-material coating (12) is applied to an intermediate layer (14) containing nickel, particularly an intermediate layer being formed of nickel-chromium, said intermediate layer (14) being located between said base body (13) and said hard-material coating (12). - Ink blade according to any one of the preceding claims,
wherein the contact area (6) of each individual blade (10) is a chamfer (5) located at the free end section (4) of the ink blade (1). - Ink blade according to any one of the preceding claims,
wherein the base body (13) is made of metal, particularly steel. - Ink blade according to any one of the preceding claims,
wherein said steel base body (13) is hardened and preferably annealed afterwards. - Ink blade according to any one of the preceding claims,
wherein said hard-material coating (12) is located only at the top (2) of the ink blade (1) and not in the narrow slit (16) and preferably not in the wide slit (17). - Ink blade according to claim 6,
wherein the tangent (21) to the surface (7) of the ink fountain roller (8) and the chamfer (5) of each individual blade (10) form a constant angle γ of between 3° and 15°.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9512641A FR2740386B1 (en) | 1995-10-26 | 1995-10-26 | INK BLADE SUBDIVIDED INTO ZONES FOR A ROTARY PRINTING MACHINE |
| FR9512641 | 1995-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0770479A1 EP0770479A1 (en) | 1997-05-02 |
| EP0770479B1 true EP0770479B1 (en) | 1999-12-01 |
Family
ID=9483943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96114210A Expired - Lifetime EP0770479B1 (en) | 1995-10-26 | 1996-09-05 | Zonal inking knife for a rotary printing machine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5778785A (en) |
| EP (1) | EP0770479B1 (en) |
| JP (1) | JP4170406B2 (en) |
| AT (1) | ATE187123T1 (en) |
| DE (2) | DE59603775D1 (en) |
| FR (1) | FR2740386B1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2778365B1 (en) * | 1998-05-11 | 2000-12-15 | Jean Claude Sarda | IMPROVEMENTS TO THE INKWRAPERS OF PRINTING PRESSES AND TO THEIR CLEANING METHOD |
| JP3100374B1 (en) * | 1999-06-03 | 2000-10-16 | 三菱重工業株式会社 | Ink supply device and ink key |
| EP1092535A1 (en) * | 1999-10-13 | 2001-04-18 | Think Laboratory Co., Ltd. | Doctor blade |
| US6857366B1 (en) * | 1999-11-02 | 2005-02-22 | Erik Nikkanen | Printing press ink transfer mechanism and employment of same |
| JP4932999B2 (en) * | 2000-04-26 | 2012-05-16 | ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト | Inking device of printing machine |
| EP1588854A1 (en) * | 2004-04-22 | 2005-10-26 | Kba-Giori S.A. | Ink supply device for printing machine |
| CN100387775C (en) * | 2006-04-13 | 2008-05-14 | 山东科技大学 | Wearable papermaking coating scraper |
| CN100432333C (en) * | 2006-05-12 | 2008-11-12 | 戴亚洲 | Ceramic coating scraper and its machining process |
| CN103481661A (en) * | 2013-09-05 | 2014-01-01 | 常熟市董浜镇徐市嘉峰机械厂 | Printing ink scraper structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3699888A (en) * | 1971-09-13 | 1972-10-24 | North American Rockwell | Composite fountain blade construction for remote ink control system |
| DE2228625B2 (en) * | 1972-06-13 | 1974-07-11 | Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach | Ink box for printing machines |
| SE437683B (en) * | 1982-10-13 | 1985-03-11 | Inventing Ab | CREATE OR SHELL - MATERIAL AGAINST THE ROLL - BY EXV |
| JPS59230748A (en) * | 1983-06-13 | 1984-12-25 | 凸版印刷株式会社 | Decorative sheet |
| SE447362B (en) * | 1985-06-14 | 1986-11-10 | Kanthal Dev Ab | doctor blade |
| DE3707570A1 (en) * | 1987-03-10 | 1988-09-22 | Jansen Herfeld Roettger Fa | Ductor knife for the printing industry |
| FI82094C (en) * | 1989-02-16 | 1997-09-09 | Valmet Corp | Anvaendning av en legering av ett metallpulver och en carbid eller nitride innefattande belaeggningskomposition Foer en i en pappersmaskin anvaendbar yankeecylinder |
-
1995
- 1995-10-26 FR FR9512641A patent/FR2740386B1/en not_active Expired - Fee Related
-
1996
- 1996-09-05 EP EP96114210A patent/EP0770479B1/en not_active Expired - Lifetime
- 1996-09-05 DE DE59603775T patent/DE59603775D1/en not_active Expired - Fee Related
- 1996-09-05 AT AT96114210T patent/ATE187123T1/en not_active IP Right Cessation
- 1996-09-09 DE DE19636536A patent/DE19636536A1/en not_active Withdrawn
- 1996-10-25 JP JP28437696A patent/JP4170406B2/en not_active Expired - Fee Related
- 1996-10-28 US US08/740,151 patent/US5778785A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19636536A1 (en) | 1997-04-30 |
| EP0770479A1 (en) | 1997-05-02 |
| FR2740386B1 (en) | 1998-01-16 |
| DE59603775D1 (en) | 2000-01-05 |
| JP4170406B2 (en) | 2008-10-22 |
| JPH09164661A (en) | 1997-06-24 |
| ATE187123T1 (en) | 1999-12-15 |
| US5778785A (en) | 1998-07-14 |
| FR2740386A1 (en) | 1997-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE602005002142T2 (en) | INK FEEDING DEVICE FOR PRINTING MACHINE | |
| DE1552633A1 (en) | Device for cutting at least one edge of a sheet metal strip | |
| EP0770479B1 (en) | Zonal inking knife for a rotary printing machine | |
| DE2845361B2 (en) | Adjustable cutting depth adjustment device for a hand knife | |
| EP0197374A1 (en) | Printing roller and a method of manufacturing the surface of a printing roller | |
| DE602004009477T2 (en) | PRE-STRIPPER FOR A CONVEYOR BELT | |
| DE2649157A1 (en) | SCISSORS | |
| EP0289799B1 (en) | Circular knife shears for edge-planing flat material, particularly sheet material and bands of metal | |
| DE3020306A1 (en) | INKER FOR A INKER ROLLER OF PRINTING MACHINES | |
| EP0855959B1 (en) | Ink knife for the ink duct roller of a printing machine | |
| DE2723578C2 (en) | ||
| EP0600435B1 (en) | Ductor knife segment and ductor knife holder for an ink fountain of a rotary printing machine | |
| DE1963667C3 (en) | Foil for supporting the Fourdrinier of a paper machine | |
| EP0945385B1 (en) | Folding triangle of a folding apparatus of a rotary printing press | |
| DE3423735C1 (en) | Ink fountain for rotary printing machines with an ink metering device | |
| EP0453872B1 (en) | Duct blade device | |
| DE2514177C3 (en) | Ripper | |
| DE3834932A1 (en) | Doctor blade holder and doctor blade suitable therefor | |
| DE10103827B4 (en) | Knife arrangement for a granulator for granulating plastic strands | |
| DE10212010C1 (en) | Seal, especially for a smoke protection sliding door | |
| DE1943130C3 (en) | Device on an inking unit of an offset printing machine for adjusting the ink knife | |
| DE1155692B (en) | Sieve film for dry shavers | |
| DE3314417A1 (en) | KEY FOR CYLINDER LOCKS | |
| DE2545737A1 (en) | PAINT KNIFE FOR THE INK BOX ROLLER | |
| EP0376885B1 (en) | Duct blade for the zonal distribution of an ink film |
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: 19960905 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE FR GB IT LI NL |
|
| 17Q | First examination report despatched |
Effective date: 19980528 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| 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 IT LI NL |
|
| REF | Corresponds to: |
Ref document number: 187123 Country of ref document: AT Date of ref document: 19991215 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 59603775 Country of ref document: DE Date of ref document: 20000105 |
|
| ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN P. & C. S.N.C. |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000208 |
|
| ET | Fr: translation filed | ||
| 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 | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20010823 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20010924 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20010925 Year of fee payment: 6 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| 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 NON-PAYMENT OF DUE FEES Effective date: 20020905 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020905 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030401 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20020905 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20080930 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20080926 Year of fee payment: 13 Ref country code: FR Payment date: 20080917 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20081031 Year of fee payment: 13 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20100531 |
|
| 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 NON-PAYMENT OF DUE FEES Effective date: 20090930 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100401 |
|
| 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: 20090930 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090930 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090905 |