EP0180075A2 - Dispositif d'encrage à rinçage avec une racle en deux parties - Google Patents

Dispositif d'encrage à rinçage avec une racle en deux parties Download PDF

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Publication number
EP0180075A2
EP0180075A2 EP85112809A EP85112809A EP0180075A2 EP 0180075 A2 EP0180075 A2 EP 0180075A2 EP 85112809 A EP85112809 A EP 85112809A EP 85112809 A EP85112809 A EP 85112809A EP 0180075 A2 EP0180075 A2 EP 0180075A2
Authority
EP
European Patent Office
Prior art keywords
ink
separating plate
inking roller
inking
gravity
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
Application number
EP85112809A
Other languages
German (de)
English (en)
Other versions
EP0180075A3 (en
EP0180075B1 (fr
Inventor
Helmut Geretzki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0180075A2 publication Critical patent/EP0180075A2/fr
Publication of EP0180075A3 publication Critical patent/EP0180075A3/de
Application granted granted Critical
Publication of EP0180075B1 publication Critical patent/EP0180075B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to a rinsing inking unit for a rotary printing press, preferably a flexographic printing press, with a squeegee bar which can be set on the inking roller and which is provided between two doctoring blades which can be supported on the inking roller with a channel serving for ink supply and distribution and with devices for supplying and removing the ink.
  • Such a flushing inking unit is known from DE-OS 31 35 711.
  • This well-known flushing inking unit is used to ink the inking roller with only one color.
  • For certain prints, such as newspaper printing it is desirable to have a form cylinder Color two or more different colors over areas of its axial length.
  • the individual sections of the inking roller of different colors are separated from each other only by narrow ring strips.
  • the object of the invention is to provide a flushing inking unit of the type specified at the outset with at least two squeegee strips, which are separated from one another by ink separation devices on their mutually facing end faces, without the risk of faults due to the drying of paint and the impairment of the mobility of the ink separation devices.
  • this object is achieved in that at least two squeegee strips are provided, between which a ink separating plate which projects at right angles to the inking roller is pivotally mounted on a bolt parallel to the inking roller, between the vertical line drawn through the center of gravity of the inking plate and the inking roller and lies above this center of gravity, so that the ink separating plate with a concave end face, which is curved in accordance with the radius of the inking roller and has a circumferential length covering the doctor blade, lies sealingly against the jacket of the inking roller under the effect of gravity, and that the doctor blades, which are flat, with the side edges of the rake l knife aligned side, the color separation plate facing end surfaces are provided axially are slidably mounted and can be pressed sealingly onto the side surface of the color separation plate.
  • the width of the uncolored strip corresponds only to the thickness of the color separation plate.
  • the ink separating plate is pivoted on the bolt and is only guided between the end faces of the squeegee strips, so that there is no need to worry about sticking and smearing because special guides that could become clogged with drying ink are not available.
  • a color box for rotogravure printing presses is known, which is divided for simultaneous printing with different colors over the length of the forme cylinder by partitions that are rubbed against the forme cylinder circumference.
  • the partition wall provided with a highly elastic sealing strip is screwed together with the parts of the ink fountain enclosing it, so that the partition wall does not move relative to those adjacent to it Squeegees can move.
  • a particularly good, sealing contact of the front edge of the ink separating plate on the jacket of the inking roller is ensured if the inking plate is pivotally mounted in an elongated hole on the bolt which runs in the direction of the inking roller, and that the inking plate is attacked by one above its center of gravity Spring is applied towards the inking roller.
  • the ink separator plate can not only perform a swiveling movement, but also a translatory movement in the direction of the inking roller, so that the front edge can fit sealingly against the jacket of the inking roller without the mobility of the ink separating plate in the radial plane of the inking roller would be affected by the storage.
  • the end face of the color separation plate is expediently provided with a groove, the legs surrounding the groove being provided with cutting-like end edges.
  • this scraper bar only slightly exceeds the width of the ink separating plate and strips off any paint residues from the inking roller so that they do not get into the area of the ink separating plate and can contaminate it.
  • the scraper bar is designed so smooth that it can not interfere with a good contact of the ink separation plate on the jacket of the inking roller.
  • the squeegee strips and the ink separating plate are expediently arranged on a common axis via these clamping pieces.
  • the clamping pieces can be provided with an extension supporting the color separation plate.
  • the spring pressing the ink separating plate in its upper region against the inking roller can consist of a tension spring which is fastened on the one hand to the ink separating plate and on the other hand to the clamping pieces.
  • the squeegee strips can be mounted on the axis via bushings and compression springs that surround the axis can be pressed against the ink separating plate, the compression springs being supported on stops fixed to the frame.
  • An axis 3 is held in two support pieces 1, 2, which are firmly connected to the side walls, not shown, of a flexographic printing press for newspaper printing.
  • On axis 3 are a mirror image of two identical consoles 4, 5 clamped.
  • These brackets 4, 5 have lugs 6 and 7, which are each provided with an elongated hole 8, 9.
  • a pin 10, on which a color separation plate 11 is suspended, extends through both elongated holes 8, 9.
  • the two lugs 6 and 7 are connected to one another via a further bolt 12 and secured against rotation, the bolt 12 being encompassed in the free area between the lugs 6 and 7 by one end of a tension spring 13, which is connected at the other end with an adjusting screw 14 is.
  • This adjusting screw 14 is mounted in a lug 15 which is firmly connected to the color separation plate 11.
  • the two brackets 4 and 5 are clamped to the axis 3 and are at such a distance from one another that the pivoting movement of the color separation plate 11 around the bolt 10 is not hindered.
  • the ink separating plate 11 is pressed with its end face 16 against the inking roller 17, which transfers the ink to a plate cylinder 18.
  • the mounting of the bolt 10 is chosen so that its axis is offset from the center of gravity of the ink separating plate 11 in the direction of the inking roller 17.
  • the color separation plate 11 has a recess 19 in the region of the axis 3.
  • the ink separating plate 11 carries a holder 20 which carries a scraper bar 21, the width of which is greater than the thickness of the ink separating plate 11.
  • a pipe section 22 and 23 are mounted on the axis 3 on both sides next to the brackets 4 and 5 sets that are connected to holders 24 and 25.
  • the holders 24 carry the ink chamber doctor blade 26 and the holders 26 the ink chamber doctor blade 27.
  • the facing end faces of the two ink chamber doctor blades 26 and 27 are open. They lie on both sides sealingly against the color separating plate 11, which is provided with an ink-repellent covering.
  • This coating can be Teflon, for example.
  • the pressing force for the two ink chamber doctor blades 26 and 27 is generated by compression springs 28 'and 29', which are supported on the one hand on the support pieces 1 and 2 and on the other hand on the mutually facing end faces of the tube pieces 22 and 23. There is so much free space between the two pipe sections 22 and 23 and the two brackets 4 and 5 that a sealing contact of the ink chamber end faces of the ink separating plate 11 is always guaranteed.
  • the ink chamber doctor blades 26 and 27 each have an ink chamber 28 and 29 and a color return bore 30 and 31 assigned to each ink chamber. Excess paint runs through this color return bore 30 and 31 into an ink collecting trough 33, which is divided into two by a plate 32. As is known per se, the face ends of the ink chamber doctor blades 26 and 27 are closed by spray plates.
  • the ink chambers 28 and 29 are closed on the circumference by squeegees 34 and 35.
  • the paint is supplied to the paint chambers 28, 29 through lines, not shown.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP85112809A 1984-10-30 1985-10-09 Dispositif d'encrage à rinçage avec une racle en deux parties Expired EP0180075B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3439713 1984-10-30
DE3439713 1984-10-30
DE3505598A DE3505598C2 (de) 1984-10-30 1985-02-18 Spülfarbwerk mit geteilter Farbkammerrakel
DE3505598 1985-02-18

Publications (3)

Publication Number Publication Date
EP0180075A2 true EP0180075A2 (fr) 1986-05-07
EP0180075A3 EP0180075A3 (en) 1986-10-22
EP0180075B1 EP0180075B1 (fr) 1989-03-01

Family

ID=25826106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112809A Expired EP0180075B1 (fr) 1984-10-30 1985-10-09 Dispositif d'encrage à rinçage avec une racle en deux parties

Country Status (3)

Country Link
US (1) US4667595A (fr)
EP (1) EP0180075B1 (fr)
DE (1) DE3505598C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222118A3 (en) * 1985-11-09 1989-06-14 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Colour separator for the inking unit of a flexographic machine
FR2734512A1 (fr) * 1995-05-22 1996-11-29 Heidelberg Harris Sa Encrier d'une machine rotative a imprimer
US8408127B2 (en) 2008-05-23 2013-04-02 Tresu A/S Doctor blade chamber

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704433A1 (de) * 1987-02-12 1988-08-25 Frankenthal Ag Albert Kurzfarbwerk
DE3706011A1 (de) * 1987-02-25 1988-09-08 Roland Man Druckmasch Kurzfarbwerk
US4796528A (en) * 1987-05-29 1989-01-10 M.A.N. Roland Druckmaschinen Ag Separated ink fountain for a flexographic printing machine
US4821672A (en) * 1987-06-22 1989-04-18 Nick Bruno Doctor blade assembly with rotary end seals and interchangeable heads
US5012736A (en) * 1987-09-21 1991-05-07 Paper Converting Machine Company Sealing assembly for liquid fountain
DE3800411A1 (de) * 1988-01-09 1989-07-20 Frankenthal Ag Albert Farbwerk
DE3800412A1 (de) * 1988-01-09 1989-07-20 Frankenthal Ag Albert Farbwerk
DE3823340C2 (de) * 1988-07-09 1995-12-07 Fischer & Krecke Gmbh & Co Kammerrakel für Rotations-Druckmaschinen
US4998475A (en) * 1988-09-22 1991-03-12 Man Roland Druckmaschinen Ag Compact printing machine inker system
DE3832183C1 (fr) * 1988-09-22 1990-02-22 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
US5125341A (en) * 1991-05-15 1992-06-30 Paper Converting Machine Company Ink unit for printing press and method
US5265535A (en) * 1991-12-28 1993-11-30 Kabushiki Kaisha Isowa Printing machine for corrugated board sheet
DE4239793A1 (fr) * 1992-01-03 1993-07-08 Noelle Gmbh
US5243907A (en) * 1992-01-22 1993-09-14 The Langston Corporation Divider seal for split-fountain chambered doctor blade for a flexographic printing press
US5410961A (en) 1992-12-30 1995-05-02 Fit Group, Inc. Fountain assembly
US5664496A (en) * 1994-12-15 1997-09-09 Markem Corporation Doctoring ink cup
CN1172797C (zh) 1996-10-25 2004-10-27 柯尼格及包尔公开股份有限公司 墨斗
DE59702966D1 (de) * 1996-12-21 2001-03-01 Koenig & Bauer Ag Verfahren zum Einfärben einer Rasterwalze
GB0421483D0 (en) * 2004-09-28 2004-10-27 Absolute Engineering Ltd Ink recovery system
CN105474760B (zh) 2013-08-28 2019-03-08 3M创新有限公司 具有用于精确配准的基准标记的电子组件
GB2547432B (en) 2016-02-16 2018-09-19 Archipelago Tech Group Ltd Fluid ejector

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1920419A (en) * 1931-12-05 1933-08-01 Shellmar Products Co Printing machine
CH413872A (de) * 1962-11-13 1966-05-31 Winkler Fallert & Co Maschf Vorrichtung zum Verhindern des Zusammenfliessens zweier Farben unter dem Farbmesser von Hochdruck-, Offsetdruck- und ähnlichen Maschinen mit Abteilkeilen
DE1224327B (de) * 1963-03-28 1966-09-08 Albert Schnellpressen Farbkasten fuer Tiefdruckrotationsmaschinen
US3319563A (en) * 1964-09-18 1967-05-16 Clarence M Champion Ink separator
DE1265166B (de) * 1965-07-07 1968-04-04 Maschf Augsburg Nuernberg Ag Farbwerk fuer Tiefdruckrotationsmaschinen
US4165688A (en) * 1977-04-14 1979-08-28 Magna-Graphics Corporation Ink dam for printing press
CA1062956A (fr) * 1977-12-23 1979-09-25 American Bank Note Company Encreur pour impression en creux
DE3135711A1 (de) * 1981-07-29 1983-02-10 Windmöller & Hölscher, 4540 Lengerich Spuelfarbwerk fuer eine rotationsdruckmaschine
DE3320638C2 (de) * 1983-06-08 1986-10-16 Koenig & Bauer AG, 8700 Würzburg Farbabteileinrichtung an Farbkastenwalzen von Druckmaschinen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222118A3 (en) * 1985-11-09 1989-06-14 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Colour separator for the inking unit of a flexographic machine
FR2734512A1 (fr) * 1995-05-22 1996-11-29 Heidelberg Harris Sa Encrier d'une machine rotative a imprimer
US8408127B2 (en) 2008-05-23 2013-04-02 Tresu A/S Doctor blade chamber

Also Published As

Publication number Publication date
DE3505598C2 (de) 1986-08-14
EP0180075A3 (en) 1986-10-22
US4667595A (en) 1987-05-26
EP0180075B1 (fr) 1989-03-01
DE3505598A1 (de) 1986-04-30

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