EP0070431B1 - Farbwerk - Google Patents

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Publication number
EP0070431B1
EP0070431B1 EP82105855A EP82105855A EP0070431B1 EP 0070431 B1 EP0070431 B1 EP 0070431B1 EP 82105855 A EP82105855 A EP 82105855A EP 82105855 A EP82105855 A EP 82105855A EP 0070431 B1 EP0070431 B1 EP 0070431B1
Authority
EP
European Patent Office
Prior art keywords
roller
accordance
rollers
elements
rotationally symmetric
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
Application number
EP82105855A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0070431A1 (de
Inventor
Claus Dieter Barrois
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0070431A1 publication Critical patent/EP0070431A1/de
Application granted granted Critical
Publication of EP0070431B1 publication Critical patent/EP0070431B1/de
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

Definitions

  • the invention relates to a device for transporting a liquid medium according to the preamble of claim 1.
  • Devices for transporting a liquid medium e.g. Printing ink, on a jacket of a roller in its longitudinal axis direction are e.g. in printing press construction in the form of changing inking rollers.
  • a disadvantage of this inking unit is that a doctor blade susceptible to wear and tear, which is known not to wear uniformly over its entire length, is required. Due to the same directions of rotation and different peripheral speeds of the application roller and metering roller, there is a risk of mutual damage between the two rollers, in particular with dry-running inking units.
  • an inking unit in which a plurality of driven disks are arranged on a roller for the purpose of uniformizing the ink application.
  • the discs have no contact with each other and cannot be placed against each other.
  • the invention has for its object to provide a device with which it is possible to transport a liquid medium on rollers in their longitudinal axis direction without the roller needing to perform a traversing movement.
  • a liquid medium e.g. Printing ink, fountain solution, coating liquid, etc.
  • a roller crosswise that is in the longitudinal direction of the roller, without requiring a traversing movement.
  • the subject of the invention can e.g. can advantageously be used in an inking unit of a rotary printing press in order to substantially reduce the degree of non-uniformity of an ink layer thickness relief over the length of an inking roller without having to use a doctor blade.
  • the subject matter of the invention it is possible with the subject matter of the invention to carry out an ink layer thickness compensation over the entire length of the inking roller in the shortest possible time, even if the maxima and minima of the ink relief are so far apart that they cannot be mixed together by the traversing movement of a distribution roller. It is therefore possible to print extreme forms without being able to detect stenciling on the printed product. No separate drive is required for the set-up, it can simply be placed on the inking roller.
  • the device according to the invention also promotes the evaporation of the dampening liquid in the printing ink after printing, so that the ink film returning to the inking unit is largely free of dampening agent. Due to the large number of splitting points, the ink returning to the inking unit is kept supple.
  • An inking unit of a rotary printing machine dyes in a known manner a rubber-coated inking roller 1, which in turn a printing plate 2, e.g. an offset printing plate, which is clamped on a forme cylinder 3.
  • the printing plate 2 transfers ink to a blanket 4 of a blanket cylinder 6.
  • Ink application roller 1, forme cylinder 3 and blanket cylinder 6 preferably have the same diameter and are driven in a known manner at the same peripheral speed.
  • the inking roller 1 or the printing plate 2 is moistened via a dampening unit 7.
  • the inking roller 1 receives its printing ink from an ink fountain screwless ink fountain 8. Both to produce a uniform ink film and a film inking unit - as shown in the embodiment in Fig. 1 - can be used.
  • the functioning of film inking units is general, for example by DE-PS 901 057, so that its detailed description can be omitted here.
  • the printing ink passes from the ink fountain 8 via a speed-controllable duct roller 9, intermediate rollers 11, 12, 13, 14, 16, onto a first transfer roller 18 and a second transfer roller 19. Both transfer rollers 18, 19 are in contact with the ink application roller 1.
  • Ductor roller 9, intermediate rollers 11 to 16 and transfer rollers 18, 19 have a significantly smaller diameter than the inking roller 1, the rollers 11 to 16, 18, 19 having the same peripheral speed as the inking roller 1.
  • Rollers 14, 18, 19 are iridescent Ink distribution rollers executed.
  • You have e.g. the same diameter as the transfer rollers 19, 18, are coated with an ink-friendly (oleophilic) hard coat, e.g. Ceramic or copper, provided and run under pressure on the circumference of the inking roller 1.
  • each row 32, 33 of rollers 27, 28, 29, 31 consists of a plurality, for. B. 20, side by side - directly on or at a distance from each other - arranged pairs of rollers 27-28 or 29-31.
  • the rollers 27 to 31 preferably have the shape of straight truncated cones (FIGS.
  • each roller 27, 28, 29, 31 is provided with a cylindrical countersink 43 which is arranged concentrically with respect to a circular cone longitudinal axis 41 and 42 and into which a ball bearing 46 is pressed, the inner ring of which is pressed onto a pin 47.
  • Each pin 47 is positively connected to a bracket 48, which is screwed to a rail 49. The ends of each rail 49 are screwed to the side frames of an inking unit and are aligned such that their longitudinal axis is parallel to an axis of rotation 51; 52; 53 the relief compensating roller 23 assigned to it; 24; 26 runs.
  • rollers 27, 28, 29, 31 are each in pairs 27-28; 29-31 arranged and form with their mutually pressed lateral surfaces 34-36; 54-56 each have a line of contact or surface 58; 37.
  • each of these points of contact is also an ink gap at which the printing ink is split and transported in accordance with the known laws.
  • roller pairs 27-28; 29-31 on the rotating, ink-guiding roller 23 the arrangement just described creates a kind of “ink shunt effect”. I.e. if there is excess ink, e.g.
  • Fig. 5 are between the roles, e.g. 27, 28, cylindrical, made of an ink-friendly material, e.g. Rubber, existing, horizontally arranged intermediate rollers 62, 63 interposed. They are fastened to the rail 49 so as to be rotatable about their axis of rotation 67, 68, and their lateral surfaces 64, 66 are pressed against one another in such a way that the two intermediate rollers 62, 63 rotate in frictional engagement with one another. With the outer surface 64 of the first intermediate roller 62, the outer surface 34 of the first inclined roller 27 is in frictional engagement with the outer surface 66 of the second intermediate roller 63, the outer surface 36 of the second inclined roller 28.
  • the roles, e.g. 27, 28 are arranged as described above.
  • a relief compensation roller 23 carrying printing ink is shown as a roller on which two rows 32, 33 of rollers 27-28; 29-31 are arranged. Both rows 32, 33 are offset from one another in the longitudinal direction of the roll such that an overlap 45, e.g. 10 mm, which results in opposite roller pairing 27-29 and 28-31 in the circumferential direction of the roller.
  • the row 32 of rollers 27, 28 of the relief compensation roller 26 is offset from the rows 32, 33 of the relief compensation roller 24.
  • the lateral surfaces 39, 40 of the rollers 27, 28 are not designed to be flat, but rather semicircular.
  • Fig. 8 shows an embodiment in which the rollers, e.g. 27, 28, are designed as a circular cone. Otherwise, what applies to the frustoconical rollers above, e.g. 27, 28.
  • FIGS. 9 and 10 show a further inventive application of the frustoconical rollers 27, 28 on an inking unit of a rotary printing press.
  • the relief compensation rollers 23, 24, 26 are arranged on the application roller 1 between the contact points 21, 22 - seen in the direction of rotation of the application roller 1.
  • the two relief compensation rollers 69 and 70 are rotatably mounted in the side frames at a distance from the relief compensation roller 23. They are driven by the main drive of the machine and can be designed as an oscillating roller.
  • the two relief compensation rollers 59 and 61 are rotatably mounted in the side frames; they are driven by the main drive of the machine and can be designed as oscillating rollers.
  • An intermediate roller 55 rotates between the relief compensation rollers 69 and 70; its outer surface is set against the outer surfaces of the two relief compensation rollers 69 and 70.
  • An intermediate roller 60 rotates between the relief compensating rollers 59 and 61, its outer surface is set against the outer surface of the two relief equalizing rollers 59 and 61.
  • the jackets of the rollers 55, 59, 60, 61, 69, 70 consist of a printing ink-friendly material.
  • a plurality of pairs of rollers 27-28 are each rotatably mounted on holders 65 in the longitudinal direction of the relief roller.
  • the holders 65 are screwed to cross members, not shown, which are attached to the side frames.
  • the roller pairs 27-28 consist of the straight frustoconical rollers 27 and 28 already described above with a cone opening angle ⁇ of 90 °. Their axes of rotation 41 and 42 do not intersect at an angle of 9 ⁇ m as described in the above exemplary embodiments, but run parallel to one another, and their flat lateral surfaces 34 and 36 roll on one another.
  • the axes of rotation 41; 42 of the rollers 27; 28 of the pairs of rollers 27-28 are to the axis of rotation 51; 52, 53 and 72; 73; 74; 75 of the roller 23; 24; 26 and 69; 59; 61; 70 inclined at an angle of preferably 45 °.
  • the object of the invention is not limited to inking units, it can also e.g. can be used in dampening systems for dampening rollers. It goes without saying that the coats of rollers and rollers are made of a material that transports the fountain solution well.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Coating Apparatus (AREA)
  • Treatment Of Fiber Materials (AREA)
EP82105855A 1981-07-15 1982-07-01 Farbwerk Expired EP0070431B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3127880A DE3127880C2 (de) 1981-07-15 1981-07-15 Farbwerk
DE3127880 1981-07-15

Publications (2)

Publication Number Publication Date
EP0070431A1 EP0070431A1 (de) 1983-01-26
EP0070431B1 true EP0070431B1 (de) 1985-04-10

Family

ID=6136934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105855A Expired EP0070431B1 (de) 1981-07-15 1982-07-01 Farbwerk

Country Status (7)

Country Link
US (2) US4519312A (enrdf_load_stackoverflow)
EP (1) EP0070431B1 (enrdf_load_stackoverflow)
JP (1) JPS5818268A (enrdf_load_stackoverflow)
CS (1) CS272755B2 (enrdf_load_stackoverflow)
DD (1) DD202664A5 (enrdf_load_stackoverflow)
DE (1) DE3127880C2 (enrdf_load_stackoverflow)
SU (1) SU1255043A3 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3148667C1 (de) * 1981-12-09 1987-07-09 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zum Druckmittelaustausch zwischen, in Walzenlängsrichtung zueinander versetzten Zonen im Farbwerk einer Rotationsdruckmaschine
DE3419764C2 (de) * 1984-05-26 1986-05-28 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum seitlichen Transportieren überschüssiger Farbe, Farb-/Wasseremulsion oder Wasser
NO175293C (no) * 1992-07-08 1994-10-05 Gp Tinter As Papirinnfargingsapparat
DE4235390C1 (de) * 1992-10-21 1993-12-23 Roland Man Druckmasch Vorrichtung zum in Achsrichtung versetzten Transportieren eines flüssigen Mediums zwischen zwei Walzen
US20120111215A1 (en) * 2009-05-06 2012-05-10 Baptista Valter Marques Method for pasty ink flexography printing associated to ink load variation due to thermal modulation

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE12687C (de) * J. BLOW in Nünhead (England) Apparat um Kleister, Planirwasser oder andere Klebstoffe bezw. Farbe auf Papier oder Gewebe gleichmäfsig zu vertheilen
US687073A (en) * 1901-03-11 1901-11-19 Hunter James Machine Co Wool-washer.
US1077882A (en) * 1913-04-21 1913-11-04 Edward F Holz Ink-fountain for printing-presses.
US1490539A (en) * 1923-10-19 1924-04-15 Pucci Giacomo Clearer for drawing rolls
GB256703A (en) * 1925-05-14 1926-08-16 Isaac Charles Squier Improvements in inking mechanism for printing presses
US1715741A (en) * 1927-11-07 1929-06-04 Leslie W Claybourn Inking mechanism for printing machinery
US1840009A (en) * 1929-09-20 1932-01-05 Hoe & Co R Inking mechanism for printing machines
US2514321A (en) * 1947-12-23 1950-07-04 Stephen I Fekete Clothes wringer
DE901057C (de) * 1950-04-14 1954-01-07 Koenig & Bauer Schnellpressfab Heberloses Farbwerk fuer Rotationsdruckmaschinen
US3433155A (en) * 1965-09-13 1969-03-18 Harris Intertype Corp Mechanism for applying a coating to a plate
US3803793A (en) * 1970-04-14 1974-04-16 Standard Pressed Steel Co Method and apparatus for preloading a joint
US3687073A (en) * 1970-07-16 1972-08-29 Halm Instrument Co Ink distributing means comprising a bundle of skewed rollers
CA1019637A (en) * 1972-05-09 1977-10-25 Dahlgren Manufacturing Company Method and apparatus for inking printing plates
US3903793A (en) * 1974-08-23 1975-09-09 Pitney Bowes Inc Inking mechanism for a postage meter
DE3014144C2 (de) * 1980-04-12 1982-01-21 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Aufbringen einer Flüssigkeit auf den Plattenzylinder einer Rotationsdruckmaschine
DE3225378A1 (de) * 1982-07-07 1984-01-12 Koenig & Bauer AG, 8700 Würzburg Farbwerk

Also Published As

Publication number Publication date
US4541339A (en) 1985-09-17
JPS5818268A (ja) 1983-02-02
CS272755B2 (en) 1991-02-12
DD202664A5 (de) 1983-09-28
EP0070431A1 (de) 1983-01-26
SU1255043A3 (ru) 1986-08-30
DE3127880C2 (de) 1983-12-22
JPH0377062B2 (enrdf_load_stackoverflow) 1991-12-09
DE3127880A1 (de) 1983-01-27
US4519312A (en) 1985-05-28
CS486182A2 (en) 1990-06-13

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