EP0017842A1 - Dispositif d'encrage pour une machine à imprimer - Google Patents

Dispositif d'encrage pour une machine à imprimer Download PDF

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Publication number
EP0017842A1
EP0017842A1 EP80101729A EP80101729A EP0017842A1 EP 0017842 A1 EP0017842 A1 EP 0017842A1 EP 80101729 A EP80101729 A EP 80101729A EP 80101729 A EP80101729 A EP 80101729A EP 0017842 A1 EP0017842 A1 EP 0017842A1
Authority
EP
European Patent Office
Prior art keywords
inking
cylinder
inking unit
metering
unit according
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.)
Ceased
Application number
EP80101729A
Other languages
German (de)
English (en)
Inventor
Ingo Köbler
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 EP0017842A1 publication Critical patent/EP0017842A1/fr
Ceased 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
    • B41F31/004—Driving means for ink rollers

Definitions

  • the invention relates to an inking unit for a printing press with an inking unit cylinder, which forwards the ink supplied to a plate cylinder rotating at approximately the same surface speed and can be adjusted on the two metering rollers, each of which is assigned a doctor blade.
  • Such an inking unit is known from DE-OS 2 052 806. It is provided that the metering rollers rotate at approximately the same surface speed as the inking unit and plate cylinders. It has been found that a satisfactory, uniform, thin layer of paint for application to the plate cylinder cannot yet be achieved with this.
  • the invention has for its object to provide a simply constructed space-saving inking unit of the type mentioned, which provides a uniform, thin layer of ink on the inking cylinder.
  • the inking unit comprises an ink fountain 1, to which the ink to be printed is fed in a manner known per se, not shown in such a way that the ink surface 2 is always approximately at the same height.
  • An ink fountain roller 3 is partially immersed in the ink surface 2.
  • the ink fountain roller 3 can be driven by means of an electric motor 4 via a belt drive 5 at a variable speed. Instead of the belt drive, another drive connection between the ink fountain roller 3 and the electric motor 4 can also be provided.
  • the ink fountain roller 3 is held at both ends in eccentric bearings 6.
  • the eccentric bearings serve to adjust the gap between the ink fountain roller 3 and an inking cylinder 7.
  • the inking cylinder 7 is connected to a plate cylinder 9 via two non-driven applicator rollers 8, which are only carried by friction.
  • the inking cylinder 7 is driven.
  • the drive takes place in a manner known per se from the drive of the plate cylinder 9, so that the inking cylinder 7 and the plate cylinder 9 rotate at approximately the same surface speed. There is therefore also Possibility to apply the ink directly from the inking cylinder 7 to the plate cylinder 9, so that the application rollers 8 can be omitted.
  • a first metering roller 10 is arranged adjacent to the ink fountain roller 3 such that the ink transferred from the ink fountain roller 3 to the inking cylinder 7 is fed to it.
  • the first metering roller 10 is driven by a variable-speed electric motor 11 and a belt drive 12.
  • the connection between the metering roller and the electric motor can again be designed in another known manner.
  • the drive is designed so that the metering roller 10 can be driven at a surface speed that is greater than the surface speed of the inking cylinder 7.
  • a second metering roller 13 also works together with the ink fountain roller 3, which can also be driven with its own electric motor 14 and a belt drive 15 independently of the first metering roller 10 with a variable surface speed that is greater than the surface speed of the inking cylinder 7.
  • the two ends of each of the two metering rollers 10, 13 are held in eccentric bearings 16 and 17, with which the gap between each of the two metering rollers 10, 13 and the inking cylinder 7 is individually adjustable.
  • other known means for example adjusting levers, can also be provided instead of eccentric bearings.
  • the diameters of the two metering rollers 10, 13 are smaller than half the diameter of the inking cylinder 7.
  • Each of the two metering rollers 10, 13 is also assigned a doctor blade 18, 19, which is attached to the ink fountain 1.
  • the inking cylinder 7 is mounted in a side wall 22 of the printing press by means of an axle pin 21.
  • a gearwheel 23 is firmly attached to the journal 21 and meshes with a worm 24, the axis 25 of which is mounted in a housing 26.
  • the housing 26 encompasses the worm 25 and the gear 23 and is rotatable, but non-displaceably placed on the journal 21 in the axial direction.
  • the screw 24 carries a pin 27, on which the one end of a lever 28 is mounted, the other end of which is pivoted on a pin 29.
  • the pin 29 is seated on a carrier 30 fixedly connected to the side wall 22.
  • the carrier 30 furthermore has two guide rails 31, between which the lower end of the housing 26 is guided.
  • the metering roller 13 is cooled.
  • the one journal 33 with which the metering roller 13 is mounted in the side wall 22, is provided with an inner bore 34.
  • the tube 35 opens into a head 36 of a cooling water supply line 37.
  • the annular cavity surrounding the tube 35 of the inner bore 34 opens into a head 38 of a cooling water discharge line 39.
  • the lines 37 and 39 and the heads 36 and 38 are at one with the Side wall 22 fixedly connected carrier 40 attached.
  • the heads 36, 38 are also sealed in a manner not shown in relation to the rotating journal 33 or the pipe 35, which is also rotating.
  • the cooling water enters the head 36 through the line 37 and from there through the pipe 35 and distributor bores 42 into the inner cavity 43 of the metering roller 13.
  • the cooling water can then enter through further holes 44 at the other end of the metering roller 13 into the annular cavity formed by the inner hole 34 around the tube 35 and flow into the cooling water discharge line 39 via the holes 41 and the head 38.
  • any other known cooling device can also be used for this roller. It is also possible to equip the metering roller 10 with cooling if necessary.
  • the ink fountain roller 3 rotates at a low surface speed in the direction of arrow b. In doing so, it transports ink from the ink fountain 1 to the inking cylinder 7 rotating at a substantially higher surface speed in the direction of arrow c. This ink then reaches the first metering roller 10.
  • the metering roller 10 runs at a greater surface speed than the inking cylinder 7. It therefore decreases from the amount of ink supplied and leads it in the direction of arrow d to the doctor blade 18, from which the ink flows back into the ink fountain 1.
  • the ink layer pre-metered by means of the metering roller 10 then reaches the second metering roller 13. Since this metering roller 13, in turn, rotates at a surface speed in the direction of arrow e which is greater than the surface speed of the inking cylinder 7, the second metering roller 13 also takes the amount of ink supplied again more than half, so that the application rollers 8 are only fed a thin layer of ink.
  • the ink removed from the metering roller 13 is doctored off by the doctor blade 19 and likewise flows back into the ink fountain 1. Since the color in the gaps between the metering rollers 10 and 13 and the inking cylinder 7 heats up, the metering rollers 10, 13 are expediently cooled in order to dissipate this heat immediately.
  • the layer thickness of the ink which the inking cylinder 7 supplies to the application rollers 8 and thus to the plate cylinder 9 can accordingly be varied by changing the surface speeds of the metering rollers 10 and 13.
  • the gap between the metering roller 10 and the inking cylinder 7 and the gap between the metering roller 13 and the inking cylinder 7 is to be adjusted in each case according to the thickness of the ink layer supplied.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP80101729A 1979-04-21 1980-04-01 Dispositif d'encrage pour une machine à imprimer Ceased EP0017842A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2916212 1979-04-21
DE19792916212 DE2916212A1 (de) 1979-04-21 1979-04-21 Farbwerk fuer eine druckmaschine

Publications (1)

Publication Number Publication Date
EP0017842A1 true EP0017842A1 (fr) 1980-10-29

Family

ID=6068935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101729A Ceased EP0017842A1 (fr) 1979-04-21 1980-04-01 Dispositif d'encrage pour une machine à imprimer

Country Status (3)

Country Link
EP (1) EP0017842A1 (fr)
DD (1) DD150725A1 (fr)
DE (1) DE2916212A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006030057B4 (de) * 2006-05-23 2009-12-24 Koenig & Bauer Aktiengesellschaft Farbwerk einer Rotationsdruckmaschine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480627A1 (fr) * 1980-04-16 1981-10-23 Dcm Dispositif pour appliquer une couche d'enduction sur une bande de materiau circulant en continu
DE3117341C2 (de) * 1981-05-02 1988-07-07 Albert-Frankenthal Ag, 6710 Frankenthal Farbwerk
DE3119789C2 (de) * 1981-05-19 1984-05-30 Albert-Frankenthal Ag, 6710 Frankenthal Kurzfarbwerk
DD283581A5 (de) * 1988-03-25 1990-10-17 Veb Kombinat Polygraph "Werner Lamberz" Leipzig,Dd Kurzfarbwerk

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430965A (en) * 1942-04-21 1947-11-18 Goss Printing Press Co Ltd Inking mechanism using water base inks
DE1176674B (de) * 1957-10-10 1964-08-27 Miehle Goss Dexter Inc Farbwerk fuer Rotationsdruckmaschinen
FR2166989A5 (fr) * 1971-12-06 1973-08-17 Vickers Ltd

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430965A (en) * 1942-04-21 1947-11-18 Goss Printing Press Co Ltd Inking mechanism using water base inks
DE1176674B (de) * 1957-10-10 1964-08-27 Miehle Goss Dexter Inc Farbwerk fuer Rotationsdruckmaschinen
FR2166989A5 (fr) * 1971-12-06 1973-08-17 Vickers Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006030057B4 (de) * 2006-05-23 2009-12-24 Koenig & Bauer Aktiengesellschaft Farbwerk einer Rotationsdruckmaschine

Also Published As

Publication number Publication date
DD150725A1 (de) 1981-09-16
DE2916212A1 (de) 1980-10-23

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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

AK Designated contracting states

Designated state(s): CH DE FR GB IT SE

17P Request for examination filed

Effective date: 19801213

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19820709

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KOEBLER, INGO