EP0118129A2 - Dispositif de dosage d'encre pour un rouleau encreur - Google Patents

Dispositif de dosage d'encre pour un rouleau encreur Download PDF

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Publication number
EP0118129A2
EP0118129A2 EP84102355A EP84102355A EP0118129A2 EP 0118129 A2 EP0118129 A2 EP 0118129A2 EP 84102355 A EP84102355 A EP 84102355A EP 84102355 A EP84102355 A EP 84102355A EP 0118129 A2 EP0118129 A2 EP 0118129A2
Authority
EP
European Patent Office
Prior art keywords
metering
ink
ink fountain
fountain roller
dosing
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.)
Withdrawn
Application number
EP84102355A
Other languages
German (de)
English (en)
Other versions
EP0118129A3 (fr
Inventor
Hermann Fischer
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0118129A2 publication Critical patent/EP0118129A2/fr
Publication of EP0118129A3 publication Critical patent/EP0118129A3/fr
Withdrawn legal-status Critical Current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
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices

Definitions

  • the invention relates to an ink metering device for an ink fountain roller, in particular for flat or high-pressure rotary machines, with rotatable, ink zone-wide metering elements made of circular cylindrical bodies on the ink fountain roller.
  • ink zone-wide metering tongues which can be pressed continuously against the ink fountain roller and which, seen in the axial direction of the ink fountain roller, have support and metering areas next to one another.
  • the color is dosed by means of wedge-shaped recesses in the tongues.
  • each ink zone-wide metering element seen in the axial direction of the ink fountain roller, has support and metering areas next to one another.
  • Each dosing element is constantly pressed against the ink fountain roller with its support areas.
  • the metering areas located between two support areas run in a wedge shape in depth, so that by rotating the support elements around their axis of rotation lying parallel to the ink fountain roller, ink layers of different thicknesses can be produced on the ink fountain roller.
  • the production of such dosing elements is complex and on the other hand, as a result of the webs which are constantly in contact, relatively large, non-inkable areas remain on the ink fountain roller, which in turn makes it more difficult to rub or even out the ink layer to be dispensed.
  • the ink delivery is influenced by width control and, according to DE-AS 2 648 098, in principle in the same way via thickness control of the ink layers to be delivered.
  • the object of the present invention is to provide an ink metering device with easy-to-manufacture ink metering elements, wherein if necessary a quasi-continuous inking of the ink fountain roller should be possible.
  • the invention is explained below with reference to an ink fountain 1 shown in FIG. 1, in which the front boundary is formed by an ink fountain roller 2 and which comprises a cross member 3 and base parts 4, 5 arranged thereon.
  • the metering device according to the invention can also be used on other ink fountain types, for example those with an immersed ink fountain roller, and that the invention appropriate ink metering elements can also be attached to the ink fountain roller at other locations.
  • the rear floor part 4 is fastened to the cross member 3 by means of screws 6 and the front floor part 5 near the ink fountain roller 5 by means of screws 7. By loosening the screws 6, 7, the bottom parts 4, 5 can thus be easily removed.
  • the ink fountain 1 is pivotable about an axis 8.
  • the color metering elements 9 are arranged in the front base part 5.
  • the color metering elements 9 each consist of a circular cylindrical body, to which a shaft is preferably attached for its rotation about its axis of rotation R.
  • the shaft 10 and the circular cylindrical body of the metering element 9 can also be made from one part, e.g. made from a turned part, efficiently.
  • At least one bearing 11 is arranged on the shaft 10, to which an adjusting nut 12 engaging the shaft 10 engages.
  • the adjusting nut 12 can be screwed into the front base part 5 from below, so that the desired height shift of the metering element 9 is possible in order to bring it into a defined distance from the ink fountain roller 2.
  • the metering elements shown are inserted into bores 13.
  • the distance between adjacent bores 13 should be kept as small as possible, e.g. 2 mm. If necessary, adjacent color metering elements 9 can even touch.
  • each metering element 9 is connected to a gear 14, which can be actuated either by a preferably remotely controllable motor 15 or by hand using a color zone adjusting screw 16 in order to rotate each color metering element 9 in the bore 10 about its axis of rotation R.
  • This axis of rotation R must be approximately perpendicular to a tangent on the ink fountain roller 2.
  • an elevation 17 which acts as a metering web is provided on an end face of each metering element 9.
  • the metering webs 17 should each extend diametrically over the end face of the metering element 9, that is to say from one side through the center point to the other side.
  • a spring 18, preferably a plate spring, is provided between the adjusting nut 12, which in each case comprises the shaft 10 of a color metering element 9 and can be screwed into the front base part 5, and thereby a diaphragm spring, whereby the metering element 9 or the provided on its end face, acting as a metering ridge 17 can be pressed resiliently against the ink fountain roller 2.
  • a non-circular running of the ink fountain roller can be compensated for in an advantageous manner.
  • the ink metering elements 9 When using a further bearing 11, it is also possible, with the spring 18 omitted, to adjust the ink metering elements 9 to a certain distance from the surface of the ink fountain roller 2, which can be chosen, for example, such that the elevations 17 just touch the ink fountain roller 2. If, for example, a thin, non-harmful ink film is let through between the elevations 17 and the ink fountain roller 2, this can be used as "Lubricant film" act, which can prevent signs of wear. This effect can be improved by making the surfaces of the elevations 17 micro-roughened.
  • depressions 19 are provided on both sides of each elevation, via which ink can escape when a paint metering element 9 is rotated by the motor 15 or the ink zone adjusting screw 16 such that the elevations 17 do not come to lie more parallel to the ink fountain contact line B, ie when they are rotated about their rotation axis R. 2, the two left color metering elements 9 and the right color metering element are shown in the blocking position, while the second color metering element is shown from the right in the fully open position and the middle color metering element in a slightly open position.
  • the recesses provided on both sides of the elevations 17 thus allow the width of the color passing through the recesses 19 to be metered.
  • the elevations 17 should be kept as narrow as possible in order to enable a quasi-continuous inking of the ink fountain roller 2 at maximum ink requirement (right-angled position, based on the line of contact B).
  • the depressions 19 are slightly sunk into the bores. If a color change or the cleaning of the dosing device is required, the base parts 4 and 5, or only the base part 5, can be unscrewed and the entire color dosage for cleaning can be removed from the ink fountain 1.
  • the elevations 17 of the ink metering elements 9 can optionally also consist of an elastic material, for example hard rubber or plastic, which is is particularly gentle on the surface of the ink fountain roller 2.
  • Each of the ink metering elements shown in FIG. 2 can be set to a corresponding position in accordance with the zonal ink requirement, which, as already mentioned, is possible either with the motor 15 via a remote control or manually with the ink zone adjusting screws 16.
  • Another mode of operation is possible in that the individual color metering elements are operated at different speeds by the motor 15 assigned to them, which also enables color metering and at the same time results in a certain rubbing effect and a certain constant cleaning.
  • the hydrodynamic pressure is therefore changing, so that a cleaning effect can be achieved.
  • 3 and 4 schematically show further training options for the elevations provided on the front side of a color metering element.
  • the dosing elements 20 shown in FIG. 3 have elevations 21 and depressions 22 on both sides of these.
  • the elevations 21 consist of two triangles, the tips of which touch in the middle.
  • FIG. 4 shows a further very advantageous embodiment of the elevations acting as metering webs.
  • the ink metering elements 23 shown in FIG. 4 likewise again show continuous elevations 24 and on both sides of these depressions 25.
  • the lateral boundaries of the elevations 24 are here approximately semicircular or parabolic.
  • the advantageous design of the elevations 24 ensures that when the ink metering elements 23 are rotated from the closed state, a widened region of the elevations 24 appears very soon at the contact line B, which is advantageous with regard to ink fountain roller wear phenomena.
  • the web should also be very narrow in the middle in the embodiments according to FIGS. 3 and 4, so that in the opened state (FIG. 4, second metering element from the right) only one smaller, virtually non-impacting, non-colorable area remains.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP84102355A 1983-03-08 1984-03-05 Dispositif de dosage d'encre pour un rouleau encreur Withdrawn EP0118129A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3308066A DE3308066C1 (de) 1983-03-08 1983-03-08 Farbdosiervorrichtung fuer eine Farbkastenwalze
DE3308066 1983-03-08

Publications (2)

Publication Number Publication Date
EP0118129A2 true EP0118129A2 (fr) 1984-09-12
EP0118129A3 EP0118129A3 (fr) 1985-09-25

Family

ID=6192767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102355A Withdrawn EP0118129A3 (fr) 1983-03-08 1984-03-05 Dispositif de dosage d'encre pour un rouleau encreur

Country Status (4)

Country Link
US (1) US4554870A (fr)
EP (1) EP0118129A3 (fr)
JP (1) JPS59167262A (fr)
DE (1) DE3308066C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112373186A (zh) * 2020-11-12 2021-02-19 常德市同创包装有限公司 一种供液机构及包装装潢用辊筒印刷装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5279223A (en) * 1991-06-28 1994-01-18 Kabushiki Kaisha Tokyo Kikai Seisakusho Ink feed adjusting apparatus for use in ink supply equipment
US5410961A (en) 1992-12-30 1995-05-02 Fit Group, Inc. Fountain assembly
DE29614580U1 (de) * 1996-08-22 1996-10-02 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Farbdosiereinrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648098C3 (de) * 1976-10-23 1984-01-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbkasten für Offset- oder Hochdruckmaschinen

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE120833C (fr) *
US3185987A (en) * 1960-07-13 1965-05-25 Nippon Electric Co Oscillation control device for use in recording instruments
DE1482482A1 (de) * 1965-06-29 1969-01-16 Rau Ohg Maschf Einstellvorrichtung an einem Dreipunktgestaenge zum Anbau eines landwirtschaftlichen Geraetes an einen Schlepper
US3399652A (en) * 1967-06-14 1968-09-03 Addressograph Multigraph Automatic toner concentrate detector
US3631800A (en) * 1968-07-30 1972-01-04 Addressograph Multigraph Ink system for printing machines
US3572551A (en) * 1969-03-27 1971-03-30 Rca Corp Apparatus for monitoring and controlling the concentration of toner in a developer mix
US3572555A (en) * 1969-05-27 1971-03-30 Ibm Xerographic toner dispenser
US3632019A (en) * 1970-05-26 1972-01-04 John F Harm Level control system for flowable solid materials
JPS55121459A (en) * 1979-03-14 1980-09-18 Hitachi Ltd Developer supervising device
DE2923678C2 (de) * 1979-06-12 1982-02-18 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbkasten mit einzelnen, jeweils über die gesamte Zonenbreite reichenden Farbdosiereinrichtungen
DE3018784C2 (de) * 1980-05-16 1982-12-16 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbdosiereinrichtung in einem Farbkasten für Offset- oder Hochdruckmaschinen
DE3020306C2 (de) * 1980-05-29 1982-11-11 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbmesser für eine Farbkastenwalze von Druckmaschinen
DE3025980C2 (de) * 1980-07-09 1984-01-12 Miller-Johannisberg Druckmaschinen Gmbh, 6200 Wiesbaden Vorrichtung zum Verstellen des Farbmessers bei Druckmaschinen-Farbwerken
SE442969B (sv) * 1981-12-14 1986-02-10 Wifag Maschf Doseringskniv

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648098C3 (de) * 1976-10-23 1984-01-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbkasten für Offset- oder Hochdruckmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112373186A (zh) * 2020-11-12 2021-02-19 常德市同创包装有限公司 一种供液机构及包装装潢用辊筒印刷装置

Also Published As

Publication number Publication date
US4554870A (en) 1985-11-26
EP0118129A3 (fr) 1985-09-25
JPS59167262A (ja) 1984-09-20
DE3308066C1 (de) 1984-09-13

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Inventor name: FISCHER, HERMANN