EP2353864B1 - Encrier et unité d'impression d'une imprimante - Google Patents

Encrier et unité d'impression d'une imprimante Download PDF

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Publication number
EP2353864B1
EP2353864B1 EP20100194339 EP10194339A EP2353864B1 EP 2353864 B1 EP2353864 B1 EP 2353864B1 EP 20100194339 EP20100194339 EP 20100194339 EP 10194339 A EP10194339 A EP 10194339A EP 2353864 B1 EP2353864 B1 EP 2353864B1
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EP
European Patent Office
Prior art keywords
roller
roll
ink
printing
inking unit
Prior art date
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Not-in-force
Application number
EP20100194339
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German (de)
English (en)
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EP2353864A1 (fr
Inventor
Hans-Bernhard BOLZA-SCHÜNEMANN
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
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Koenig and Bauer AG
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Publication of EP2353864A1 publication Critical patent/EP2353864A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/20—Ink-removing or collecting devices

Definitions

  • the invention relates to an inking unit and a printing unit of a printing press according to the preamble of claim 1 and 10, respectively.
  • the WO 2005/097504 A2 is a printing unit with four stacked double printing units known, the four printing cylinders lie in a version with their centers in a same plane.
  • the printing units are designed for waterless offset printing and have inking modules designed as short inking units, ink being applied by a central roller designed as an anilox roller via two applicator rollers.
  • the central screen roller cooperates with two other rollers, which in turn cooperates via an iridescent friction roller with the adjacent inking roller.
  • the anilox roller of the short inking unit receives the ink from an inking device, in particular a chamber doctor blade, or else via a compactor, which is not described in more detail, from an ink fountain.
  • the inking unit is formed as a roller inking unit and has downstream of the ink fountain roller in series with a ductor roller, a film roll, a transfer roller, a first Reibzylinder, another transfer roller and a second distribution cylinder, before the color of the latter in parallel over two Application rollers is applied to the form cylinder.
  • this is designed as a two-pass roller inking unit, wherein the compactor divides from the ink fountain on the second distribution cylinder divides and each branch leads over further rollers to two applicator rollers.
  • WO 2005/108081 A1 is a section of an inking unit for a printing machine for supplying and metering the ink disclosed, wherein a Farbduktor is rotationally driven, so that its outer circumference passes the reservoir of ink over, whereby a color layer of certain layer thickness forms on the ductor roller. From the ductor roller, the ink is subsequently removed by means of a film roller and conveyed further in the direction of the printing zone of the printing press.
  • a metering device of several juxtaposed color blades For zonal individual dosage of ink to be transferred by the inking unit is a metering device of several juxtaposed color blades. The respective colorimeter is adjustably mounted, so that the ink fountain opening between the front edge of the colorimeter and the outer circumference of the ductor roller can be changed.
  • the DE 38 18 339 A1 relates to an inking unit for printing machines, in particular for the upper ink supply of double printing units, with a clean ink guide and exact dosage secured, while maintaining the characteristics of a short inking unit.
  • a form cylinder two inking rollers and a co-operating therewith an anilox roller are arranged.
  • the anilox roller forms a gap together with an ink feed roller (ductor roller).
  • the ink feed roller cooperates with a color meter of a color box, while additionally a color space is formed for the metering between the ink feed roller, the anilox roller and a squeegee doctor blade.
  • the EP 0 752 311 A2 discloses an inking unit of a printing machine, wherein from a zonal adjustable ink fountain color is transmitted through a ductor roller via a gap to a central roller, and from there via two applicator rollers to the forme cylinder. On the central roller is optionally a squeegee and switched off. In a further development, an additional rider roll can be provided on the circumference of the central roll, with which a further rider roll acts together.
  • the central roller here has a structuring with a line density of 80 to 200 lines / cm.
  • the EP 0 956 973 A2 relates to a printing machine with replaceable plate cylinder and an inking unit, the rollers can be adjusted to make it to plate cylinders of different diameters can.
  • the inking unit the ink is transferred from a ductor roller via a metering roller to a central primary roller, from which it is transported via two compactors, each with a transfer roller, a rubbing roller and an applicator roller to the forme cylinder.
  • the US 2 466 603 relates to a direct printing unit, wherein a plurality of forme cylinders are adjustable to a counter-pressure cylinder.
  • the ink is transferred from an ink fountain from a ink fountain roller via two ductor rollers to a central roller, from which the ink is delivered to the forme cylinder via two compactors each containing a transfer roller, a rubbing roller and two parallel applicator rollers.
  • the EP 1 543 969 A1 discloses a typical short inking unit with an anilox roller, which ink is supplied directly via an employed chamber doctor blade. The amount of ink is adjusted in such, not zonally metered inking units on the temperature.
  • the invention has for its object to provide an improved inking unit of a printing press and a printing unit having the inking unit.
  • the achievable with the present invention consist in particular in that the inking is particularly space-saving, and yet zonal adjustable in terms of the amount of color, and the high demands on a good trituration is made fair.
  • the inking can be made extremely short and yet zonally adjustable.
  • An equipped with such inking units printing unit can be made extremely compact. This can be advantageously further increased by the fact that the printing unit is designed to be divisible.
  • a printing unit 01 of a printing press in particular a newspaper printing press, has at least one first printing cylinder 02, for. B. a at least one printing plate-carrying forme cylinder 02 and a printing forme on the forme cylinder 02nd inking unit 03 (see eg Fig. 1 ).
  • the printing forme wetting with moistening dampening be provided, but this is designed as an offset printing unit 01 printing unit 01 preferably as a dry offset printing unit 01, ie formed without dampening unit or without means for separate dampening solution.
  • the printing forme of the forme cylinder 02 can basically be embodied in the manner of an engraving in the lateral surface or as a printing form detachably arranged on the lateral surface in the manner of a plate-like elevator or a sleeve having the print image original (in the high-pressure, intaglio or planographic printing process).
  • the at least one printing form on the forme cylinder 02 is preferably designed here as a planographic printing plate, in particular as a planographic printing plate designed for use in waterless offset printing.
  • the forme cylinder 02 is preferably designed to be permeable to a tempering fluid, which is fed to the forme cylinder 02, for example, from a suitable tempering device.
  • the ink applied by the inking unit 03 on the printing plate (s) of the forme cylinder 02 according to the print image original ink can then in a direct printing directly from the forme cylinder 02 to a substrate 04, z. B. a paper web 04 (short: web 04) are delivered.
  • a paper web 04 (short: web 04) are delivered.
  • it is delivered here in the indirect planographic printing process, ie in offset printing, via a printing cylinder 06 designed as a transfer cylinder 06 in the region of a printing location 07 to the printing substrate 04.
  • the substrate 04 can basically as well in a Sheet-fed press to be printed to be printed sheet.
  • the printing location 07 is preferably formed as a printing gap 07 with a further printing unit cylinder 08, which serves as an abutment for the transfer cylinder 06 via the printing material 04 to be printed.
  • This third printing cylinder 08 can run as a pure, no ink leading impression cylinder, but advantageously as a second, ink-carrying transfer cylinder 08 of a second printing unit 09 with a second designed as a forme cylinder 10 printing cylinder 10.
  • the centers of the two printing couple cylinders 02 are in the print-on position; 06 of the printing unit 01 and the third printing cylinder 08, in the embodiment with double pressure point 07, the centers of all four printing cylinder 02; 06; 08; 10, in a common plane E (see eg Fig. 10 ).
  • the inking unit 03 has the input side, d. H. Formzylinderfern a Farbdosiersystem 11, through which the ink is metered into the inking unit 03 dosed at least in terms of their amount.
  • the ink metering system 11 should preferably be designed as a continuous inking system.
  • Farbdosiersystem 11 and forme cylinder 02 a depending on the type of inking different pronounced compactor is provided by which the registered ink "triturated", d. H. is as uniform as possible on the roll circumferences. The tendency is to increase with the number of rolls, i. H. the color splitting, the quality of the trituration, the flexibility in setting and the capacity of inked and evened ink stored in the inking unit 03, but at the same time leads to increased space requirements and high costs.
  • the inking unit 03 described below in examples saves space and costs, However, at the same time formed with a high quality in the trituration and an optimal flexibility with regard to the controllability of the color input.
  • the inking unit 03 has (at least) two rotatably mounted rollers 12.1; 12.2, z. B. inking rollers 12.1; 12.2, on, by which employed in the form of cylinder 02 state ink is applied to the printing form.
  • the inking rollers 12.1; 12.2 also be referred to as the front inking roller 12.1 and 12.2 rear inking roller.
  • These two inking rollers 12.1; 12.2 receive the ink directly and / or indirectly from a central roller 13, which the ink from an upstream of the inking unit 03 provided further roller 14, z.
  • a ductor roller 14 which in turn upstream indirectly or preferably directly supplied by the ink metering system 11 with ink.
  • the central roller 13 can be supplied with ink by means of a vibrating roller (not shown) oscillating between the ductor roller 14 and the central roller 13 or by means of one or more further rollers arranged between the central roller 13 and the ductor roller 14.
  • the central roller 14 rotates approximately (eg a maximum of ⁇ 2% deviation) with the peripheral speed of the printing cylinder 02; 06 and the ductor roller 14 with one of these significantly different, in particular significantly lower (eg, at least a factor of 2 lower in production) peripheral speed. Due to the difference in the peripheral speed ink is permanently removed from the ink jet of the ductor roller 14 by the central roller 13.
  • the centers of the central roller 13 and the ductor roller 14 are preferably mounted so spaced apart, so that between the color-free lateral surfaces a gap 18, z. B.
  • the column 18 is preferably adjustable in width by at least one of the two rollers 13; 14, z. B. the roller 14, on the frame in a direction with at least one perpendicular to its axial component is movable. So that the roller 13 can safely remove sufficient ink from the ink film of the ductor roller 14, it is preferably with a structured lateral surface, for. B. in the manner of a film roller 13 or possibly also formed in a suitable type of an anilox roller.
  • the width of the gap 18 is adjustable by z. B. the Ducktorwalze 14 (possibly together with components of the ink metering system 11) and / or the central roller 13 (possibly together with other components of the compactor) is mounted movable relative to each other at a distance or are.
  • the central roller 13 is movable, in particular z. B. adjustable in eccentric bearings, stored.
  • the ductor roller 14 and possibly the ink metering system 11 movably mounted.
  • ductor roller 14 and ink dosing system 11 are arranged on a common, movably mounted frame part.
  • the axial direction of the central roller 13 it is preferably fixed to the frame in all variants, ie. H. for example, not changeable, stored.
  • the ductor roller 14 with respect to its rotation by a mechanically independent of the central roller 13 motor 16 - z. B. directly or via a transmission (eg., A gear transmission or a belt drive) - forcibly driven.
  • the drive takes place in the above-mentioned manner adjustable roller 13 z. B. via an angle and / or offset compensating coupling or via a balance shaft.
  • Motors or drive motors are indicated in the figures by the corresponding quadrant filled circle symbol.
  • the engine 16 and thus the speed of the Ductor roller 14 formed variable.
  • the quantity of ink to be transferred from the ductor roller 14 to the central roller 13 is variable and thus adjustable.
  • the storage of the ductor roller 14 is advantageously within a clearance of the printing cylinder 02; 06; 08; Provided 10 frontally supporting frame walls, ie in each case on the inside of the respective frame escape.
  • the ink fountain roller 14, the ink supplying color inking system 11 is designed zonal adjustable with respect to the ink to be entered.
  • the ink metering system 11 has an adjustable metering device 17 in sections.
  • the metering device 17 may include the zones associated with line openings of a Pumpfarbwerkes, the Farbauslassmengen for pipe openings of different zones individually z. B. via valves or individual pumps is adjustable.
  • the ink metering system 11 is designed as a so-called ink fountain 11 and comprises as metering device 17 juxtaposed across the width of the inking unit 03 a number of color blades 17 or color slices obtained by slitting a wider blade - which is also under the meaning of "several Color knife "should fall.
  • These color blades 17 are each individually adjustable by means not shown and explained in their distance from the lateral surface of the ductor roller 14.
  • the adjusting means are actuated by a control and / or regulating device of the printing press and / or a control station ferbetätigt controllable.
  • a color layer of greater or lesser thickness can pass from the ink reservoir of the ink fountain 11 through the gap formed between the ink knife 17 and the lateral surface and be introduced into the compactor of the inking unit 03.
  • individually adjustable color meter 17 or tongues
  • the Recording for the ink fountain 11 is advantageously within a clearance of the printing cylinder 02; 06; 08; Provided 10 frontally supporting frame walls, ie in each case on the inside of the respective frame escape.
  • the inking unit 03 has a shortest ink path from the ink metering system 11 via a ductor roller 14, via a central roller 13 arranged with a small gap 18, to an inking roller 12.1 in contact with the latter in this example. 12.2, and from there on the forme cylinder 02 on.
  • the two inking rollers 12.1; 12.2 employed both to the forme cylinder 02 and to the roller 13. Of the cooperating with the ductor roller 14 via a gap 18 central roller 13 is here so ink with respect to the ink stream downstream at two circumferentially spaced locations by the rollers 12.1; 12.2 accepted.
  • the central roller 13 is preferably driven for all examples, medium or direct rotationally. For this purpose, it can on the pin via a mechanical drive connection of one of the printing cylinder 02; 06 forth, or preferably by a drive motor 19 mechanically independent of the printing cylinder 02; 06 be rotationally forced.
  • At least one further roller 21.1 is provided in the inking unit 03; 21.2 (eg take-off roll 21.1; 21.2), which cooperates with the central roll 13 downstream.
  • This acts downstream with another roller 22.1; 22.2 (eg transfer and / or transfer roller 22.1; 22.2), and the latter with the circumference of the central roller 13 geometrically closest to the inking roller 12.1; 12.2 together.
  • At least the transfer and / or Verreibewalzen 22.1; 22.2 are preferably movable in the axial direction and mounted forcibly via a corresponding drive changierbar.
  • the traversing drive is not shown here concretely, but can basically via a gear from the rotational movement of the roller 22.1; 22.2 are derived (cost-effective) or by a specially provided for this drive means (variable with respect. Frequency). In either case, the traversing motion is forced. This is done for example by a rotational movement of the roller 22.1; 22.2 or a motor rotor in an iridescent axial movement converting gear, z. B. via a co-rotating with a circumferential groove groove driver, via a swash plate, via a worm or a crank gear.
  • the roller 22.1; 22.2 or the rollers 22.1; 22.2 are rotatory here only by friction with the take-off roller 21.1; 21.2 and / or the inking roller 12.1; 12.2 driven, but can also be further development by the drive motor 19 of the central roller 13, by a drive of the printing cylinder 02; 06 or even a specially provided drive motor be driven individually or in pairs rotationally forced.
  • the take-off and the inking rollers 21.1; 21.2; 12.1; 12.2 are preferably rotationally driven only by friction.
  • At least the take-off and inking rollers 21.1; 21.2; 12.1; 12.2 preferably have an elastic and / or compressible shell layer, for. B. containing an elastomer on.
  • the lateral surface of the inking roller 12.1; 12.2 is preferably formed with a hardness in the range of 35-40 ° Shore A.
  • the lateral surfaces of the central roller 13 and / or the Transfer and / or Verreibewaltze 22.1; 22.2 are preferably formed with a hard, substantially unyielding lateral surface.
  • the lateral surfaces (or possibly the entire roller body) of the transfer and / or Verreibewalze 22.1; 22.2 are for example made of a polyamide, for. B. from Rilsan, or from a metal, for. B. made of copper.
  • the forme cylinder 02 is positively driven in rotation by a drive motor 23 which is mechanically independent of the inking unit 03 -directly or via a transmission.
  • Transfer cylinder 06 and forme cylinder 02 of the printing unit 01 (09) can be driven in pairs by a common drive motor 23, or individually by a separate drive motor 23.
  • a second embodiment variant (see, for example, Fig. 2 ) are both the two take-off rollers 21.2; 21.2, as well as the two applicator rollers 12.1; 12.2 in touching contact with the central roller 13.
  • z. B. in the manner of a "film roll" 13 effective and / or trained (central) roller 13 is here ink at four circumferentially spaced locations by downstream of the central roller 13 arranged rollers 12.1; 12.2; 21.1; 21.2 accepted.
  • a subsequent order by the duct roller 14 subsequent first color decrease takes place by a take-off roller 21.2, which transmits the ink via a transfer and / or Verreibewalze 22.2 to the co-acting inking roller 12.2.
  • a second and a third color decrease takes place in each case directly through the respective inking roller 12.2; 12.1, and a fourth color decrease again via a take-off roller 21.1, which emits the ink again over a printing ink uniforming transfer and / or Verreibewalze 22.1 to the associated inking roller 12.1.
  • the roller 13 - in contrast to a z. B. in a conventional short or anilox inking with a squeegee co-operating anilox roller - in their training z. B. characterized in that it directly above the above gap 18 for ink absorption directly, ie without further intermediate roll (s), with a ductor roller 14 cooperates.
  • a ductor roller 14 Unlike one Function of an anilox roller, however, is not operatively connected to the ink dosing with a squeegee scraping off the excess ink.
  • the central, preferably structured roller 13 is formed without touching contact to a printing ink decreasing doctor.
  • the ink metering takes place here preferably only via the gap 19 and the ink fountain roller 14 upstream Farbdosiersystem 11th
  • the central roller 13 is preferably formed with a structured outer surface, so that they z. B. in function of a "film roll" 13 sufficient ink from the ductor roller 14 can decrease.
  • the central, with the ductor roller 14 cooperating roller 13 may advantageously be constructed in the manner of a film roller 13, but in principle also in the manner of a conventional anilox roller 13, whose structure z. B. is given by a regular structure of wells or Haschuren on the lateral surface. In the present application and function but then no squeegee to the z. B. operated in the manner of a film roller 13 anilox roller 13 and / or provided.
  • the structuring on the lateral surface should be such that viewed along at least one direction on the lateral surface, which may extend in the axial, circumferential or in a direction lying between the axial and circumferential direction, in the middle z.
  • at least 0.5 wells per cm, advantageously at least one depression per cm are provided ("fineness" of structuring).
  • a so-defined "fineness" of the structure on the roller 13 can basically be between one recess and 50 recesses per cm, whereby a distinction can be made between a coarse, a fine and a middle region.
  • an area for coarse patterning may be formed in 0.5 to 15 wells per cm and an area for fine patterning in e.g. B. 30 to 80, z. B.
  • a bordering the fine and coarse area overlapping middle area is z. B. in 5 to 50, in particular 10 to 45 wells per cm.
  • the central area thus includes anilox rolls of offset printing with a coarser structure and film rolls with a particularly fine structure.
  • roller 13 may be of particular advantage to form the roller 13 with a finer or coarser structure.
  • the roller 13 eg in the manner of an anilox roller 13 with cups or hashes
  • a structuring in the region of the fine structuring in particular z. B. in the overlapping of the fine and medium structuring provided.
  • the roller 13 eg in the manner of an anilox roller 13 or film roller 13
  • the roller 13 is then z. B. as a "coarse screen roller” or a "fine film roller” executed.
  • the inking unit 03 is designed such that it can optionally be switched between an operation according to the first and the second embodiment of the second example.
  • z. B. at least one of the inking rollers 12.1; 12.2 or z. B. both (or all) inking rollers 12.1; 12.2 (and, if appropriate, together with this or these the associated rollers 22.1, 22.2 and / or rollers 21.1, 21.2) be movably mounted between the two corresponding positions. Then can be switched or selected as needed between a setting with an increased number of nips or a setting while avoiding too short color path.
  • At least the application roller 12.2 which is not in contact with the central roller 13 in this embodiment, is movably mounted in the inking unit 01, so that it can be engaged with the forme cylinder 02 and the central roller 13 simultaneously in a different mode of operation.
  • the contact with the further roller 22.1; 22.2 is preferably given in both operating situations.
  • This is a direct ink path from the ductor roller 14 via the central roller directly to the applicator roller 12.2 and from there to the forme cylinder 02 at least for one of the applicator rollers 12.1; 12.2 preventable.
  • This preferably applies to the last applicator roller 12.2 in the direction of rotation with respect to the forme cylinder 02 before the nip position with the transfer cylinder 06. In this case, the danger is particularly great that possibly a still visible pattern from the structured surface of the central roller 13 without being smoothed again reflected on the forme cylinder 02 and the printing plates.
  • the applicator rollers 12.1; 12.2 stored such that in an operating position two applicator rollers 12.1; 12.2 are in contact with the forme cylinder 02, but not in direct contact with the central roller 13, in the second operating situation an applicator roller 12.1; 12.2 is in contact with forme cylinder 02 and directly to the central roller 13 and another applicator roller 12.1; 12.2 to the forme cylinder 02, but not directly to the central roller 13, and in the third mode of operation two or all applicator rollers 12.1; Although 12.2 are in contact with the forme cylinder 02, but not directly to the central roller 13.
  • the central roller 13 does not interact directly with the ductor roller 14.
  • Ducktorwalze 14 and central roller 13 are spaced apart so far that no direct ink transfer takes place.
  • the ductor roller 14 transmits the ink here via a gap 18 'on an additionally arranged roller 31, z.
  • the rollers 21.1; 21.2; 22.1; 22.2; 12.1; 12.2 be arranged or executed as in the first or the second variant of the second embodiment.
  • the arrangement according to the second variant is advantageous, ie with simultaneously applied to form cylinder 02 and central roller 13 in Druck-An salaried or adjustable inking rollers 12.1; 12.2.
  • the additional roller 31 can then either be arranged in the inking unit 03 so that it interacts with the upper roller 21.2 in the first variant of the third exemplary embodiment (eg. Fig. 4 ), or that it interacts with the lower roller 21.1 in a second variant (eg. Fig. 5 ).
  • the central roller 13 either smooth, ie formed without structuring or with a fine structure, while the film roller 31 as an effective roller 31 is preferably formed with a structuring on the lateral surface in the coarse region.
  • the roller assembly corresponds to that of the first ( Fig. 4 ) or second ( Fig. 5 ) Variant with the difference that the film roller 31 is in direct contact only with the ductor roller 14 and with the central roller 31. That too Fig. 4 and Fig. 5 otherwise stated.
  • Fig. 6 Preferably in the direction of rotation of the central roller 13 following application roller 12.2 or in Fig. 7 With respect to the direction of rotation of the central roller 13 of the nip with the film roller 31 preceding applicator roller 12.1 can then with a rider than roller 22.2; 22.1 effective, preferably changeable, roller 22.2; 221 work together.
  • Fig. 5 is available.
  • Variant of the third embodiment of the inking unit 01 corresponds to the roller arrangement of those of the first ( Fig. 4 ) or second ( Fig. 5 ) Variant with the difference that the applicator roller 12.2; 12.2, which with this order roller 12.2; 12.1 associated intermediate roller 22.2; 22.1 and cooperating with the latter roller 22.2; 22.1 forms a roller train to the film roller 31, although it is employed on the forme cylinder 02, but not on the central roller 13. That too Fig. 4 and Fig. 5 otherwise stated.
  • the second printing unit 09 of a double printing unit 26 the one mentioned for the first printing unit 01 is to be used correspondingly for all examples.
  • the structure of the structured roll 13 may be defined, for example, by pits (for example in the form of an anilox roll), by a number of recesses which are inclined relative to the circumferential direction, for example by means of a fineness. As scribed or introduced by laser grooves or a number of each other crossed rotating Depressions, z. As grooves, be formed so that ultimately diamond-shaped elevations remain. Also, the roller 13 (or roller 31), in particular as a film roller 13 (31) may be formed in cross-section with a polygonal circumference, the secants then as depressions for "gripping" of the ink are effective.
  • the roller 13 or 31 (eg in the form of a film roller 13, 31) has a lateral surface with a stochastic structure of depressions, ie a lateral surface with an irregular distribution of depressions structuring this surface, which for example also have an uneven shape and / or no specific preferred direction.
  • the stochastic structure is z. B. by shot peening into the originally smooth and homogeneously formed lateral surface of the roller 13; 31 introduced.
  • the roller 13; 31 has z. B. a hard surface (eg., At least 50 Shore D) on.
  • the central roller 13 is designed to be tempered.
  • it is associated with a tempering device, not shown, through which the temperature of the roll shell and / or located on the roll shell ink is directly or indirectly tempered.
  • the roller 13 is preferably designed to be permeable by a tempering fluid, which is supplied, for example, from a suitable tempering device.
  • the tempering device may be the one which also supplies the forme cylinder 02 with tempering agent.
  • temperature control means corresponding temperature control device and sensor system
  • pressure drop located and / or entering the ink fountain 11 can be tempered, or at least in one side (eg at higher temperatures or lower temperatures) or two-sided (at higher and lower temperatures) limited or limited temperature range can be maintained.
  • the compact arrangement of the printing ink from the central roller 13 decreasing rollers 21.2; 12.2; 12.1; 21.1 of the second, third and fourth embodiments leads to a high number of color fissions in a confined space and also reduces by the presence of transmission and / or Verreibewalzen 22.1; 22.2 the formation of pronounced in the axial direction of color density fluctuations in the inking unit 03, as they may arise, for example, by axially differing due to the print image color decrease.
  • This effect is in particular also countered by the combination with the formation of the ink metering system 11 as a zone-wise with respect to the amount of ink supplied system 11 adjustable.
  • the inking unit 03 is due to the special geometric arrangement of the rollers 12.1; 12.2; 13; 14; 21.1; 21.2; 22.1; 22.2; 31 extremely compact.
  • the axis of rotation of the central roller 13 is in this case arranged at a smaller distance from the forme cylinder 02 than a roller 21.1 cooperating with the central roller 13; 21.2, in particular as a following after coloring first and a last of several (eg., Two or four) with the roller 13 downstream of the color decrease cooperating rollers 21.1; 21.2.
  • the central roller 13 is arranged in the inking unit 03, that the imaginary, the centers of the forme cylinder 02 and the central roller 13 connecting plane Z a horizontal, through the center of the forme 02 going plane H at an angle ⁇ of 20 ° to 25 ° intersects.
  • the center of the roller 13 is below that of the forme cylinder 02.
  • the inking and take-off rollers 12.1; 12.2; 21.1; 21.2 are advantageously arranged in the inking unit 03 such that the planes, which in each case through the centers of the upper rollers 12.2; 21.2 and the center of the central roller 13, intersect at an angle ⁇ 2 of 80 ° to 95 °, while the planes passing through the centers of the lower rollers 12.1; 21.1 and the center of the central roller 13, intersect at an angle ⁇ 1 of 65 ° to 80 °.
  • Inking rollers 12.1; 12.2 be arranged cooperatively.
  • the central roller 13 also act on a plurality of upstream rollers with a Farbdosiersystem 11 together.
  • it acts z. B. not directly with a ductor roller 14 and must, for. B. also not be formed with a structured lateral surface.
  • inking unit 03 is to be used in printing units 01 (09) of printing units of different types, for example in sheet-fed offset printing, in I-printing units encountered in commercial printing, in satellite printing units provided in newspaper or semi-commercial printing or here preferably in newspaper or semi-commercial printing stacked in a printing tower lying double printing units.
  • Such a printing unit 24 is, for example, by a printing tower 24 with at least four stacked double printing units 26 of two at their transfer cylinders 06; 08 as a double pressure point 07 cooperating printing units 01; 09 (see eg 10 and 11 , In respect of the stability of an advantageous embodiment, the printing cylinder 02; 06; 08; 10 of the Double printing 26 arranged in the above common plane E. Possibly. occurring channel beats then take place simultaneously and z. T. counter directed.
  • the plane E is preferably inclined at an angle ⁇ of 76 to 86 ° to the plane of the incoming web 04. In a vertically extending track 04, the plane is thus inclined by 4 ° to 14 ° to the horizontal plane H.
  • the second printing unit 09 with the printing cylinders 08; 10 and the inking unit 03 is the first printing unit 01, the printing cylinder 02; 06 and the inking unit 03 to apply executed in the same way.
  • the compact inking unit 03 is used in conjunction with a divisible printing unit 24.
  • a divisible printing unit 24 can be built even closer, while remaining sufficiently easy to use.
  • this z. B. manually hang or preferably are to be introduced into a device for semi or fully automatic plate change.
  • separable executed printing unit 24 has two separable parts, hereinafter referred to as partial pressure units 24.1 and 24.2, on.
  • the Printing cylinder 02; 06 or 08; 10 more, in particular all the web 04 on the same side printing printing 01; 09 on the same frame or wall section 27; 28 stored.
  • the printing cylinder 02; 06 or 08; 10 can in principle only one side, ie flying on only one end frame frame sections 27; 28 be stored.
  • each partial printing unit 24.1; 24.2 two end faces to the printing cylinder 02; 06 or 08; 10 arranged rack or wall sections 27; 28 provided.
  • the two separable partial pressure units 24.1 and 24.2 have the respective frame or wall sections 27; 28 and printing units 01; 09 (printing cylinder 02, 06 or 08, 10 and inking 03) on.
  • the partial printing units 24.1; 24.2 are along a direction perpendicular to the axis of rotation of the printing cylinder 02; 06 or 08; 10 movable towards or away from each other by preferably one of both spatially fixed (here partial pressure unit 24.1), d. H. for example, on a floor 29 of the printing room, a space-fixed support 29, a mounting plate 29 or a mounting frame 13 for the printing unit 24 stationary, and the other (here partial printing unit 24.2) movable relative to the bottom 29 or support 29 or the mounting plate 29 or Mounting frame 29 is mounted.
  • the printing unit 24 can be moved apart; It is therefore not a particularly large vertical distance between superimposed printing units 01; 09 required.
  • the divisible printing unit 24 and possibly with the arrangement of the printing cylinder 02; 06; 08; 10 in common plane E is a printing unit 01; 09 and a printing unit 24 created which or which ensures good operability in a confined space and is individually adjustable with sufficient print quality in terms of color zones.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (14)

  1. Mécanisme d'encrage (03) d'une machine d'impression comportant au moins un groupe d'impression offset (01) avec un cylindre porte-cliché et un cylindre de transfert (02, 06 ; 10, 08), ledit mécanisme d'encrage (03) comportant au moins deux rouleaux encreurs (12.1 ; 12.2) pouvant être serrés contre le cylindre porte-cliché (02 ; 10) et alimentés en encre en parallèle directement par un rouleau central (13), et au moins un autre rouleau (21.1 ; 21.2) étant disposé comme rouleau d'enlèvement (21.1 ; 21.2) contre la surface extérieure du rouleau central (13), lequel est également disposé de manière à coopérer avec le rouleau central (13), en aval du flux d'encre, et est à son tour disposé de manière à coopérer en aval avec un rouleau de transfert et/ou rouleau baladeur (22.1 ; 22.2), ce dernier étant disposé de manière à coopérer avec le rouleau encreur (12.1 ; 12.2) géométriquement le plus proche à la périphérie du rouleau central (13), le rouleau central (13) présentant une surface extérieure régulièrement ou stochastiquement structurée, caractérisé en ce que le rouleau central (13) est disposé de manière à coopérer en amont avec un rouleau ducteur (14) pour la formation d'un film d'encre par un interstice (18), ledit rouleau ducteur étant lui-même disposé de manière à coopérer avec un système doseur d'encre (11) réglable par zones quant à son débit d'encre.
  2. Mécanisme d'encrage selon la revendication 1, caractérisé en ce que deux autres rouleaux (21.1 ; 21.2) sont disposés comme rouleaux d'enlèvement (21.1 ; 21.2) sur la surface extérieure du rouleau (13) coopérant avec le rouleau ducteur (14).
  3. Mécanisme d'encrage selon la revendication 2, caractérisé en ce que les deux rouleaux d'enlèvement (21.1 ; 21.2) sont disposés dans le mécanisme d'encrage (03) de telle manière que le centre du rouleau central (13) soit disposé sur la face la plus proche du cylindre porte-cliché d'un plan reliant les centres des deux rouleaux d'enlèvement (21.1 ; 21.2).
  4. Mécanisme d'encrage selon la revendication 1, caractérisé en ce que les deux rouleaux encreurs (12.1 ; 12.2) sont serrés contre le cylindre porte-cliché (02 ; 10), mais sans contact direct avec le rouleau (13) coopérant avec le rouleau ducteur (14).
  5. Mécanisme d'encrage selon la revendication 1, caractérisé en ce que dans la structuration du rouleau central (13), considérée au moins dans une direction sur la surface extérieure qui peut s'étendre en direction axiale, périphérique ou dans une direction intermédiaire entre direction axiale et périphérique, sont prévues en moyenne de 30 à 80, en particulier de 35 à 75, cannelures par cm.
  6. Mécanisme d'encrage selon la revendication 1, caractérisé en ce que le rouleau (13) coopérant avec le rouleau ducteur (14) ne présente aucun contact avec un dispositif racleur destiné à racler l'encre.
  7. Mécanisme d'encrage selon la revendication 1, caractérisé en ce que, pour équilibrer sa température, le rouleau (13) coopérant avec le rouleau ducteur (14) est en liaison active avec un dispositif d'équilibrage de température.
  8. Mécanisme d'encrage selon la revendication 1, caractérisé en ce que le ou les rouleaux encreurs (12.1 ; 12.2) sont montés pour être mobiles entre deux positions, de manière à pouvoir être commutés en option entre un mode de service où le ou les rouleaux d'enlèvement (21.1 ; 21.2) ainsi que ledit rouleau encreur (12.1 ; 12.2) sont en contact avec le rouleau central (13), et un mode de service où le rouleau d'enlèvement (21.1 ; 21.2) est en contact avec le rouleau central (13) et où le rouleau encreur (12.1 ; 12.2) le plus proche est disposé sans contact avec le rouleau central (13).
  9. Mécanisme d'encrage selon la revendication 2, caractérisé en ce qu'au moins un des rouleaux encreurs (12.1 ; 12.2) est monté pour être mobile entre deux positions, de manière à pouvoir être commuté en option entre un mode de service où les deux rouleaux d'enlèvement (21.1 ; 21.2) ainsi que les deux rouleaux encreurs (12.1 ; 12.2) sont en contact avec le rouleau central (13), et un mode de service où les deux rouleaux d'enlèvement (21.1 ; 21.2) sont en contact avec le rouleau central (13) et où les deux rouleaux encreurs (12.1 ; 12.2) sont disposés sans contact avec le rouleau central (13).
  10. Unité d'impression (24) d'une machine d'impression avec plusieurs groupes d'impression offset (01) comportant un cylindre porte-cliché et un cylindre de transfert (02, 06 ; 10, 08), ainsi qu'un mécanisme d'encrage (03) correspondant au cylindre porte-cliché (02 ; 10) pour l'encrage de celui-ci, caractérisé par le mode d'exécution du mécanisme d'encrage (03) selon l'une ou plusieurs des revendications 1 à 9.
  11. Unité d'impression selon la revendication 10, caractérisé en ce que, pour équilibrer sa température, le cylindre porte-cliché (02 ; 10) est en liaison active avec un dispositif d'équilibrage de température.
  12. Mécanisme d'encrage selon la revendication 1, caractérisé en ce qu'il est prévu un moyen d'équilibrage de température de l'encre d'impression se trouvant dans le système doseur d'encre (11) réglable par zones, ou pénétrant dans celui-ci.
  13. Unité d'impression selon la revendication 10, caractérisé en ce que l'unité d'impression (24) comporte plusieurs groupes d'impression doubles (26) superposés, composés chacun de deux groupes d'impression (01 ; 09) coopérant avec leurs cylindres de transfert (06 ; 08) en tant qu'emplacement d'impression double (07).
  14. Mécanisme d'encrage selon la revendication 1, caractérisé en ce que l'interstice (18) entre les deux rouleaux (13 ; 14) est de largeur réglable.
EP20100194339 2010-02-04 2010-12-09 Encrier et unité d'impression d'une imprimante Not-in-force EP2353864B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010001594A DE102010001594A1 (de) 2010-02-04 2010-02-04 Farbwerke und Druckeinheit einer Druckmaschine

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EP2353864A1 EP2353864A1 (fr) 2011-08-10
EP2353864B1 true EP2353864B1 (fr) 2012-06-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014204007B4 (de) 2014-03-05 2017-10-26 Koenig & Bauer Ag Farbwerk einer Rotationsdruckmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466603A (en) * 1945-12-11 1949-04-05 Cottrell C B & Sons Co Ink distribution for rotary printing presses
DD262193A1 (de) 1987-06-26 1988-11-23 Polygraph Leipzig Farbwerk fuer druckmaschinen
JP2864224B2 (ja) * 1995-06-30 1999-03-03 株式会社東京機械製作所 インキ供給装置
JP2873925B2 (ja) * 1995-08-28 1999-03-24 株式会社東京機械製作所 脱水機能を有するインキ供給装置
US6041706A (en) * 1998-05-15 2000-03-28 Heidelberger Druckmaschinen Ag Complete release blanket
DE10158485A1 (de) * 2001-01-12 2002-07-18 Heidelberger Druckmasch Ag Farbwerk in einer Druckmaschine
DE10111363B4 (de) * 2001-03-06 2005-03-24 Koenig & Bauer Ag Druckwerk
DE50301769D1 (de) 2003-12-19 2005-12-29 Koenig & Bauer Ag Druckmaschine mit mindestens einem Druckwerk, mit Haschuren auf der Rasterwalze
DE102004037889B4 (de) 2004-04-05 2006-05-11 Koenig & Bauer Ag Vorrichtung zur Lagerung eines Zylinders und Druckeinheit mit wenigstens drei als Druckwerk zusammen wirkenden Zylindern
DE102004022026B4 (de) 2004-05-03 2006-03-16 Koenig & Bauer Ag Verfahren zur Farbmengendosierung im Farbwerk einer Druckmaschine

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DE102010001594A1 (de) 2011-08-04

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