EP1502741A1 - Vorrichtung zur Flüssigkeitsdosierung für eine Druckmaschine - Google Patents
Vorrichtung zur Flüssigkeitsdosierung für eine Druckmaschine Download PDFInfo
- Publication number
- EP1502741A1 EP1502741A1 EP04103100A EP04103100A EP1502741A1 EP 1502741 A1 EP1502741 A1 EP 1502741A1 EP 04103100 A EP04103100 A EP 04103100A EP 04103100 A EP04103100 A EP 04103100A EP 1502741 A1 EP1502741 A1 EP 1502741A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- concave surface
- metering element
- edge
- concave
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003776 cleavage reaction Methods 0.000 claims 1
- 230000007017 scission Effects 0.000 claims 1
- 239000003973 paint Substances 0.000 description 9
- 230000005484 gravity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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
- B41F31/06—Troughs or like reservoirs with immersed or partly immersed, rollers or cylinders
Definitions
- the present invention relates to an apparatus and a method for Liquid dosage, e.g. for color dosing, according to the respective generic term of claims 1 and 8.
- the squeegee is mostly used to to influence the ink layer thickness on a color-guiding roller, d. H. by Adjustment of the distance of the doctor edge of the roll surface is the Thickness of the color film to be produced determined.
- the embodiment shown in US Pat. No. 3,037,451 in FIG. 5 comprises Doctor blade 52, with respect to the surface of the roller 53rd is variable in distance and the roller 53 facing surface level is trained. By means of the edge of the doctor blade 52 is ink from the Wrapped surface of the roller 53 and thus determines the thickness of the ink film 55.
- doctor blade 4 points in the area of his Doctor blade to a wedge-shaped section 7 of small extent, which is formed by abrasion in the blade edge.
- the embodiment shown in US Pat. No. 4,699,055 in FIG. 9 Metering device has a surface 82 curved about the surface of a roller by means of a force-generating unit 85 for producing a thinner Color film by bending be brought closer to the roll surface can.
- the device has over the other documents of the prior Technique, however, no specially trained for color separation blade edge, as at This embodiment, the color thickness adjustment due to the pressure also without a trained in such a doctor blade edge is possible.
- An inventive device for dosing of liquid for a Substrate processing machine with a rotating roller with a Roll surface and a rolling radius of curvature, wherein the Roller surface carries a liquid film, and with a metering element, is characterized in that the metering element has an edge for splitting the Liquid film and a roller surface facing the first concave surface includes and is variable in distance with respect to the roll surface.
- the first concave surface preferably extends over a region of the Metering element which is larger than the area of the edge of the metering element, in particular, over substantially the entire extent of the Dosing and / or over a (not negligible) arc of the Roller of z. B. more than about 1 or 2%.
- the respective direction of these areas and the mentioned extent is essentially to be understood parallel to the circumferential direction of the roll surface.
- the edge of the metering element is preferably for improved color splitting trained, d. H. the edge is z. B. pointed, wedge-shaped or sharp-edged tapering educated.
- the total color dosage i. H. the Production of a color layer of desired thickness, significantly improved.
- the first concave surface causes better flow characteristics and reduces the pressure of the ink acting on the dosing element.
- the metering element preferably comprises one of the first concave surface opposite second concave surface.
- the two concave surfaces allow a further reduction of the prevailing pressure of color.
- the Second concave surface also serves the improved management of unneeded, of decayed color.
- the radius of curvature of the first concave surface preferably corresponds to Essentially the radius of curvature of the roller.
- the first concave surface may preferably be an arc of 5 ° to 10 ° or more than 10 ° of the roll surface. This will not be one insignificant arc area of the roll surface from the concave surface covered, which is much larger than a bow portion of only by Wear resulting edge portion of the metering is.
- the metering element is preferably rigid and has a first lower surface which is preferably arranged horizontally to a backflow of the liquid from the allow second concave surface in a reservoir.
- the Dosing element may e.g. be made of metal, such as stainless steel.
- the liquid is preferably ink. It may be however, e.g. also with fountain solution or another used in the printing process Liquid (a so-called lithographic liquid) act.
- An inventive method for dosing a liquid in one Printing machine wherein the liquid supplied to a reservoir and a Roller for forming a liquid film is rotated on the surface of the roller is distinguished by the fact that the liquid film at one edge of a Dosing element, the one of the roller surface facing concave surface includes, is split.
- the surface speed of the roller preferably corresponds to Essentially that of a plate or forme cylinder of the printing press.
- the metering element according to the invention with concave surface allows in Advantageously, roller speeds which correspond to the speed of the Correspond to printing press.
- Fig. 1 shows a schematic side view of a device according to the invention 10 for the supply and metering of liquid, e.g. of paint or dampening solution, in a printing machine 30 with a plate or forme cylinder 32nd
- the device 10 which for example doses paint here, comprises a paint reservoir 12, an ink fountain roller 14 for removing paint from the Reservoir 12, and at least one metering element 20 (which also as a doctor can be designated).
- the ink fountain roller 14 includes a roller surface 16th
- the metering element 20 comprises a surface 16 of the first concave facing Surface 22 and may - as shown - one of the first concave surface 22nd have remote second concave surface 24.
- the first and the second concave Surface meet in an edge 36 (which are also referred to as squeegee edge can), which is shown in Fig. 2 in more detail.
- the second concave surface 24 may at its edge 36 facing away from in a flat bottom surface of the dosing element 20 facing the container 12 lead, so that the color e.g. in the form of drops 11 due to gravity is conveyed back into the container 12.
- the second concave surface 24 could However, also be flat or partially circular or any other Have shape.
- the metering element 20 is relative to the ink fountain roller 14 by means of a Control 40, which is also the control of the printing press 30th can act to set a distance D between the outer surface 16 and the first concave surface 22 control technically connected.
- the controller can while known adjustment mechanisms such. B. motor driven Actuate adjusting screws.
- the first concave surface 22 may correspond to the radius of curvature of the Ink fountain roller similar or substantially equivalent Have radius of curvature, whereby the occurring at the metering element 20 Andschreib kit be reduced.
- the selected radius of curvature of the surface 22 is depending on the radius of curvature of the ink fountain roller 14 and the usual Operating distance D.
- the distance D should be along the arc A, in which the area 22 faces the surface 16, to be kept as constant as possible around the to minimize pressure changes caused by the fluid.
- the radius of curvature of the Ink fountain roller e.g. 6.35 cm (2.5 inches) and the radius of curvature of the concave Area, for example, 6.36 cm (2.504 inches).
- the radii of curvature preferably correspond to each other to within 10% or less.
- the movement of the metering element 20 preferably takes place in such a way that the edge 36 along an outgoing from the center of the roller 14 radial Line 35 moves.
- the first concave surface 22 may be e.g. an arc A of about 5 ° or more of Roll surface correspond.
- the Color film are transferred to a reduction roller 40, which is a small proportion the color, e.g. 1/100, the metered paint on the roller 14 on the (here by a single roller shown) color roller train 50 transmits. From there, the color becomes transferred to the plate or forme cylinder 32 of the printing press 30.
- FIG. 2 is a detailed illustration of the ink splitting at the metering element 20.
- the concave surfaces 22 and 24 meet at the outermost end, e.g. 0.025 cm (0.010 inches) thick leading edge 36 wedge-shaped one another. Of the Color film is split at the edge 36, so that part of the color between the Surface 16 and the concave surface 22 passes and another part of the Color film 13 is conveyed away from the roller surface 16.
- the thickness of the leaking paint film decreases after the Dosing element 20 at a given distance setting D to half the thickness of the incoming color film. However, it may be due to other factors, e.g. the ram pressure at the rim, drag and gravity too different value for the thickness of the liquid film after the concave surface result. Such minor deviations are included here and are taken into account in the distance adjustment.
- the linear one Velocity profile V can thus contribute to the expiring Adjust film thickness, since their relationship to the distance D substantially is constant.
- the dosing element 20 may be e.g. Made of stainless steel and is preferably rigid.
- the flexibility of the edge 36 in the direction of the distance D is to be chosen such that Movements of the edge in this direction within the tolerance range of the set to generating film thickness lie.
- the surface speed of the roller 14 can be substantially the same Speed of the printing machine, i. the surface speed of the Plate or forme cylinder 32 of e.g. 244 m / min (800 ft / min) or more correspond
- Dosing element - short 3K dosing element - (ie at least one Wedge surface is concave and runs out in one edge of the dosing element) the dosage of the liquid can be significantly improved.
- the supplied Liquid film is first split at the edge and then through the concave wedge surface, or their distance from a roller, precisely metered.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Coating Apparatus (AREA)
Abstract
Description
- Fig. 1
- eine schematische Seitenansicht einer Ausführungsform der erfindungsgemäßen Vorrichtung zur Flüssigkeitsdosierung; und
- Fig. 2
- eine detailliertere Darstellung der durch die konkaven Flächen bewirkten Flüssigkeitsspaltung.
- 10
- Vorrichtung zur Zufuhr von Farbe
- 11
- Farbtropfen
- 12
- Farbvorratsbehälter
- 13
- Farbfilm
- 14
- Farbkastenwalze
- 16
- Walzenoberfläche
- 20
- Dosierelement
- 22
- erste konkave Fläche
- 24
- zweite konkave Fläche
- 30
- Druckmaschine
- 32
- Platten-/Formzylinder
- 35
- Radiallinie
- 36
- Kante
- 40
- Steuerung
- 40
- Reduzierwalze
- 50
- Farbwalzenzug
- A
- Bogen
- D
- Abstand
- V
- lineares Geschwindigkeitsprofil
Claims (10)
- Vorrichtung (10) zur Dosierung von Flüssigkeit für eine Bedruckstoff verarbeitende Maschine (30) mit einer rotierenden Walze (14) mit einer Walzenoberfläche (16) und einem Walzenkrümmungsradius, wobei die Walzenoberfläche einen Flüssigkeitsfilm (13) trägt, und mit einem Dosierelement (20),
dadurch gekennzeichnet, dass das Dosierelement (20) eine Kante (36) zur Spaltung des Flüssigkeitsfilms (13) und eine der Walzenoberfläche (16) zugewandte erste konkave Fläche (22) umfasst und bezüglich der Walzenoberfläche (16) abstandsveränderbar ist. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass das Dosierelement (20) eine der ersten konkaven Fläche (22) gegenüber angeordnete zweite konkave Fläche (24) umfasst. - Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die erste konkave Fläche (22) einen Krümmungsradius aufweist, welcher dem Krümmungsradius der Walze (14) im Wesentlichen entspricht. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die erste konkave Fläche (22) einem Bogen von etwa 5° bis 10° oder mehr als 10° der Walzenfläche (16) entspricht. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass das Dosierelement (20) steif und insbesondere aus Edelstahl gefertigt ist. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Kante (36) bezüglich der Walze (14) radial bewegbar ist. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Dicke (D) des Flüssigkeitsfilms (13) nach der Spaltung durch das Dosierelement (20) ungefähr dem halben durchschnittlichen Abstand zwischen der konkaven Fläche (22) und der Walzenoberfläche (16) entspricht. - Verfahren zur Dosierung einer Flüssigkeit in einer Druckmaschine (30) mit den Schritten: Zufuhr von Flüssigkeit zu einem Vorratsbehälter (12), Drehen einer Walze (14) zur Bildung eines Flüssigkeitsfilms (13) auf der Oberfläche (16) der Walze (14)
gekennzeichnet durch
den folgenden Schritt:Spalten des Flüssigkeitsfilms (13) an einer Kante (36) eines Dosierelements (20), das eine der Walzenoberfläche (16) zugewandte konkave Fläche (22) umfasst. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet, dass die Oberflächengeschwindigkeit der Walze (14) im Wesentlichen der Oberflächengeschwindigkeit eines Platten- oder Formzylinders (32) der Druckmaschine (30) entspricht. - Verfahren nach Anspruch 8 oder 9,
dadurch gekennzeichnet, dass der Abstand des Dosierelements (20) bezüglich der Walze (14) verändert, insbesondere im Wesentlichen radial verändert wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/628,652 US7546802B2 (en) | 2003-07-28 | 2003-07-28 | Fluid supply device for a printing machine |
| US628652 | 2003-07-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1502741A1 true EP1502741A1 (de) | 2005-02-02 |
| EP1502741B1 EP1502741B1 (de) | 2012-02-15 |
Family
ID=33541463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04103100A Expired - Lifetime EP1502741B1 (de) | 2003-07-28 | 2004-07-01 | Vorrichtung zur Flüssigkeitsdosierung für eine Druckmaschine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7546802B2 (de) |
| EP (1) | EP1502741B1 (de) |
| DE (1) | DE102004032159A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4479748B2 (ja) * | 2007-05-31 | 2010-06-09 | Tdk株式会社 | 液塗布装置 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2232274A (en) * | 1939-12-05 | 1941-02-18 | Markem Machine Co | Inking appliance for marking machines |
| US3037451A (en) | 1959-07-15 | 1962-06-05 | William F Davis | Means for dispensing and apportioning fluids |
| US3709147A (en) * | 1970-12-03 | 1973-01-09 | W Granger | Ink transfer cylinder mounting with adjustable drive clutch |
| US4007682A (en) | 1974-04-24 | 1977-02-15 | Xerox Corporation | Reverse angle mounted ink-splitting doctor blade |
| US4184429A (en) | 1972-02-09 | 1980-01-22 | Max Datwyler & Co. | Constant bevel doctor blade and method and apparatus using same |
| US4615295A (en) * | 1985-04-10 | 1986-10-07 | Magna-Graphics Corporation | Doctor blade apparatus for coating apparatus |
| US4699055A (en) | 1982-05-11 | 1987-10-13 | Heidelberger Druckmaschinen Ag | Device for metering ink in offset printing presses |
| US5003875A (en) * | 1989-03-13 | 1991-04-02 | Adolph Coors Company | Fountain roll and assembly for can decorating apparatus |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1801935A (en) * | 1927-12-31 | 1931-04-21 | Hoe & Co R | Inking mechanism |
| US3273535A (en) * | 1964-10-06 | 1966-09-20 | Rice Barton Corp | Trailing-blade-coater including adjustable drag-blade |
| US3294060A (en) * | 1966-03-21 | 1966-12-27 | Donald B Mcintyre | Fluid applicator |
| US3585932A (en) * | 1968-06-07 | 1971-06-22 | Wallace H Granger | Automatic inking system for rotary newspaper printing press |
| US3664261A (en) * | 1968-06-17 | 1972-05-23 | Harold P Dahlgren | Straight feed press |
| NL156347B (nl) * | 1975-04-03 | 1978-04-17 | Heidelberger Druckmasch Ag | Inktbak voor een drukmachine. |
| DE3033995C2 (de) * | 1980-09-10 | 1984-11-22 | Koenig & Bauer AG, 8700 Würzburg | Einrichtung zur Erhaltung der Leichtgängigkeit von Dosierelementen in Farbkästen von Druckmaschinen |
| JPS59169897A (ja) * | 1983-03-17 | 1984-09-25 | Toppan Printing Co Ltd | 印刷版 |
| DE3605613A1 (de) * | 1986-02-21 | 1987-08-27 | Jagenberg Ag | Streichvorrichtung zum beschichten von warenbahnen |
| DE3909878C1 (de) * | 1989-03-25 | 1990-08-02 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | |
| EP0542635B1 (de) * | 1991-10-15 | 1999-06-09 | Eastman Kodak Company | Verfahren zum Auftragen einer magnetischen Dispersion und Vorrichtung |
| DE4402226C2 (de) * | 1994-01-27 | 1997-11-06 | Voith Gmbh J M | Rakelvorrichtung |
| US5826509A (en) * | 1995-10-18 | 1998-10-27 | Deneka; P. Kenneth | Printing coating head device |
| DE19631301A1 (de) * | 1996-08-02 | 1998-02-05 | Gorter Cornelis | Farbkammerrakel für eine Druckmaschine |
| DE10013876B4 (de) * | 1999-04-08 | 2013-10-02 | Heidelberger Druckmaschinen Ag | Verfahren zum Regeln der Farbgebung beim Drucken mit einer Druckmaschine |
| JP3148750B1 (ja) * | 1999-10-21 | 2001-03-26 | 株式会社東京機械製作所 | 印刷機用インキレール |
-
2003
- 2003-07-28 US US10/628,652 patent/US7546802B2/en not_active Expired - Fee Related
-
2004
- 2004-07-01 EP EP04103100A patent/EP1502741B1/de not_active Expired - Lifetime
- 2004-07-02 DE DE102004032159A patent/DE102004032159A1/de not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2232274A (en) * | 1939-12-05 | 1941-02-18 | Markem Machine Co | Inking appliance for marking machines |
| US3037451A (en) | 1959-07-15 | 1962-06-05 | William F Davis | Means for dispensing and apportioning fluids |
| US3709147A (en) * | 1970-12-03 | 1973-01-09 | W Granger | Ink transfer cylinder mounting with adjustable drive clutch |
| US4184429A (en) | 1972-02-09 | 1980-01-22 | Max Datwyler & Co. | Constant bevel doctor blade and method and apparatus using same |
| US4007682A (en) | 1974-04-24 | 1977-02-15 | Xerox Corporation | Reverse angle mounted ink-splitting doctor blade |
| US4699055A (en) | 1982-05-11 | 1987-10-13 | Heidelberger Druckmaschinen Ag | Device for metering ink in offset printing presses |
| US4615295A (en) * | 1985-04-10 | 1986-10-07 | Magna-Graphics Corporation | Doctor blade apparatus for coating apparatus |
| US5003875A (en) * | 1989-03-13 | 1991-04-02 | Adolph Coors Company | Fountain roll and assembly for can decorating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| US7546802B2 (en) | 2009-06-16 |
| EP1502741B1 (de) | 2012-02-15 |
| US20050022685A1 (en) | 2005-02-03 |
| DE102004032159A1 (de) | 2005-02-17 |
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