EP2019752B1 - Mécanisme d'encrage de presse rotative comprenant un cylindre porte-film - Google Patents

Mécanisme d'encrage de presse rotative comprenant un cylindre porte-film Download PDF

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Publication number
EP2019752B1
EP2019752B1 EP07728166A EP07728166A EP2019752B1 EP 2019752 B1 EP2019752 B1 EP 2019752B1 EP 07728166 A EP07728166 A EP 07728166A EP 07728166 A EP07728166 A EP 07728166A EP 2019752 B1 EP2019752 B1 EP 2019752B1
Authority
EP
European Patent Office
Prior art keywords
roller
ink
printing
inking unit
rollers
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.)
Not-in-force
Application number
EP07728166A
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German (de)
English (en)
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EP2019752A1 (fr
Inventor
Georg Schneider
Bernd Kurt Masuch
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
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
Priority claimed from DE102006030057A external-priority patent/DE102006030057B4/de
Priority claimed from DE200610042590 external-priority patent/DE102006042590B4/de
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP2019752A1 publication Critical patent/EP2019752A1/fr
Application granted granted Critical
Publication of EP2019752B1 publication Critical patent/EP2019752B1/fr
Not-in-force 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
    • B41F31/26—Construction of inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/30—Bearings mounted on sliding supports
    • 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
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/301—Devices for tripping and adjusting form rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/32—Lifting or adjusting devices
    • B41F31/36—Lifting or adjusting devices fluid-pressure operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/10—Location or type of the layers in shells for rollers of printing machines characterised by inorganic compounds, e.g. pigments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/06—Shells for rollers of printing machines for inking rollers

Definitions

  • the invention relates to an inking unit of a rotary printing press with a film roll according to the preamble of claim 1.
  • the GB 729 561 A is a paint roller of a printing machine with a formed on its lateral surface stochastic structure known, the stochastic structure is made by shot peening.
  • DE 44 39 144 C2 is an inking unit of a rotary printing machine with a printing ink from a ink reservoir receiving ink fountain roller and a plurality of ink on a printing unit cylinder inking rollers known, wherein a color coming from the ink fountain ink stream in a main stream and in a sidestream dividing Farbstromtrennwalze is provided, wherein in the main stream and in the sidestream one from the ink flow separation roller on at least one of the inking rollers ink transfer roller is arranged.
  • the roller between the ink fountain roller and the ink stream separating roller comprises four rollers arranged in series and is thus relatively long, so that a relatively thick ink layer is to be applied on the roller downstream of the ink fountain roller when the inking rollers apply a specific amount of ink to the printing cylinder to apply.
  • the ink layer thickness on the downstream side of the nip is lower, but the respective ink layer thickness is at least on the first of the four near the ink reservoir rollers inevitably relatively high due to the many cleavage sites to the printing cylinder, which leads to increased color fog especially in a high-speed rotary printing machine.
  • WO 2004/024451 A1 is an inking unit of a rotary printing machine with a printing ink from a ink reservoir receiving ink fountain roller and a plurality of ink on a printing unit cylinder-applying inking rollers known, with a coming from the ink fountain ink stream in a main stream and in a By-pass dividing ink flow separating roller is provided, wherein in the main stream and in the side stream each one of the ink flow separation roller on at least one of the inking rollers ink transfer roller is arranged, wherein the ink to be fed into the compactor ink is applied with a chamber doctor blade directly to the ink flow separation roller.
  • the ink flow separation roller is designed as an anilox roller.
  • Such a short inking unit has no means for zone-wise color quantity metering and is only suitable for use in conjunction with a damp-proof dry offset printing method.
  • a rotary bearing bearing block By the DE 10 2004 037 883 A1 a device for supporting a cylinder of a printing unit with a movable along a travel in linear bearings, a rotary bearing bearing block is known, wherein the bearing is designed as a bearing unit in the manner of a mountable assembly as a whole, which comprises both the bearing in addition to the rotation bearing bearing elements, which allow the relative movement of the bearing block.
  • a paint roller with a formed as a sleeve shell part of a microporous elastomeric material is known, wherein in the z. B. consisting of foam rubber casing part a plurality of cavities, wherein the cavities have substantially different sizes, which are within a predetermined size range, which is intended with this ink roller, in particular at a higher peripheral speed of at least 305 m / min. to avoid throwing away color spray mist.
  • a hard-surface fluid roll wherein on the outer surface of the cylindrical core a hard metal coating z. B. chrome z. B. is applied with a thickness of up to 0.5 mm, wherein in this coating by etching a random pattern of interconnected columns and intermediate, separate islands is formed, wherein the interconnected columns occupy up to 30% of the surface of the fluid roller, wherein the column has a depth z. B. up to 0.075 mm, said fluid roller cooperates for the transport of the fluid with another roller, said further roller having a soft lateral surface, wherein both rollers are employed against each other.
  • US 45 37 127 A is an ink roller formed from steel whose outer surface is structured by engraving preferably with intersecting lines in a cell pattern, surface hardened by nitriding and then subjected to an oxidation process, wherein the oxidation process on the outer surface of the roller an outer mainly of Fe 3 O 4 existing layer is formed.
  • a printing unit having at least one ink fountain roller inking unit, wherein in the inking unit between a printing ink from a ink fountain ink fountain roller and Farbstromtrennwalze only a single roller is arranged, said roller is formed as a film roll, wherein the film roller has a lateral surface having a structure having.
  • a film roll for inking machines of rotary printing machines wherein the film roll has a surface provided with a thin hard rubber layer, wherein the hard rubber layer has a hardness of 80 to 85 Shore.
  • the invention has for its object to provide an inking unit of a rotary printing machine with a film roll, wherein the inking at a transport speed of printed in this rotary printing material of more than 10 m / s wear is less prone to fogging and to produce a printed product with a high print quality.
  • the achievable with the present invention consist in particular in that a film roll with a lateral surface having a hardness of at least 60 Shore D, preferably over 70 Shore D, in particular in the range of 80 to 90 Shore D, under the conditions of use in a high-speed rotary printing machine with a Transport speed of the substrate to be printed more than 10 m / s wear is less than a conventional film roll, z.
  • a film roll having a hard rubber layer having a lateral surface Because the aforementioned high values for the hardness of the lateral surface of a film roll can not be achieved by rubber materials.
  • a wear-resistant outer surface for the above conditions, it is advantageous to select as the material for the lateral surface of a polyamide or a polyacrylate or copper, because these materials are characterized by a high abrasion resistance and aging resistance, at the same time because of their color friendliness a very have good ink acceptance and inking performance.
  • Particularly advantageous is the use of Rilsan, ie a polyamide 11-aminoundecanoic acid (Rilsan B, PA 11) or from w-laurolactam (Rilsan A, PA 12), these polyamide materials having a hardness of at least 60 Shore D, preferably more than 70 Shore D, with particularly large values for the hardness be achieved in that the polyamide material in question is reinforced by glass fibers.
  • Forming the circumferential surface of a film roll having a stochastic structure is advantageous because a film roll having a shell surface having a stochastic structure has a very favorable ink conveying performance, which contributes to the production of a printed product having a high printing quality.
  • the proposed way of introducing the stochastic structure into the surface of the film roll is very advantageous, because shot peening is a very cost-effective processing method.
  • the Farbduktor due to the shortness of the ink to the printing cylinder transporting compactor ie record the lower number of Farbspaltstellen, only a comparatively thin ink layer from the ink reservoir and must apply to the ink ductor downstream roller to the amount required on the printing cylinder To provide printing ink. Accordingly, the ink layers on the mainly a color mist causing rollers, ie, in particular on the film roll relatively thin, which is why the proposed inking even when used in a high-speed rotary printing machine with a transport speed of printed in this rotary printing material of more than 10 m / s less Color fog tends.
  • the proposed combination of features thus leads to a film roller which has a long service life and a very good ink transfer behavior together with a low ink mist under the conditions of use in a high-speed rotary printing press and is also inexpensive to produce.
  • Another advantage is that the proposed inking due to the short compactor in an ongoing production process quickly to a z. B. at one or more color zones changed setting of the ink dosage reacts, so that a waste produced to stable provision of the new amount of ink waste can be reduced.
  • the proposed inking unit only provides a relatively small ink volume in its comparatively short drum, whereby the washing times associated with cleaning the inking unit can be kept short. Short washing times are counteracted by the demand, in particular for newspaper customers, for short set-up times, because the washing times are part of the set-up times.
  • Conventional newspaper printing machines have so far usually only two inking rollers. Three inking rollers, however, better even out the application of paint than just two inking rollers. Also, they better even out a stencil forming on the inking rollers in their respective color film, so that an inking unit having three or more inking rollers is less prone to stenciling.
  • Under stenciling is understood to be a shadow-like repetitive in the printing direction of the printing cylinder, undesirable image of a front of the printed image part.
  • the image shows a higher or lower coloration compared to the environment.
  • Stenciling is influenced by the color distribution in the inking unit, in particular by the color distribution on the inking rollers. If a previously impressed color profile is not sufficiently degraded, ie evened, by color cleavage due to the image on the printing plate before the next inking, ie revolution of the inking rollers, a partial transfer of the already printed image section to another of the image part to be printed on the printing substrate.
  • Fig. 1 an example of a part of a printing unit of a rotary printing machine is shown.
  • the rotary press operates in a wet offset printing process. Their use is intended especially in newspaper printing.
  • the printing unit has as a printing cylinder 01; 02 at least one transfer cylinder 01 and a cooperating with this transfer cylinder 01 form cylinder 02.
  • the transfer cylinder 01 generates with each of its revolutions on a substrate, not shown, preferably on a web, in particular on a paper web, at least one printed image.
  • operating case of the printing unit are employed at the forme cylinder 02 at least one inking unit and a dampening unit.
  • the inking unit has a plurality, preferably at least three inking rollers 03; 04; 06, which in an ongoing production process of rotary printing press to the Form cylinder 02 are employed.
  • a printing ink from a ink reservoir 07 receiving ink fountain roller 08 and the ink on the forme cylinder 02 applying inking rollers 03; 04; 06 are several rollers 09; 11; 12; 13 arranged.
  • the roller 09 next to the ink fountain roller 08 in the transporting direction of the ink is formed as a film roller 09.
  • a roller 11 formed as a ink flow separating roller 11 is provided which divides a paint stream A coming from the ink fountain roller 08 into a main stream B and a sub-stream C.
  • Fig. 1 is the leading to the forme cylinder 02 course of the main flow B by a solid line and also leading to the forme cylinder 02 course of the secondary flow C indicated by a dashed line.
  • the main stream B and the secondary stream C is one of the ink flow separation roller 11 on at least one of the inking rollers 03; 04; 06 ink transferring roller 12; 13, said roller 12; 13 each as a rubbing roller 12; 13 is formed.
  • the two friction rollers 12; 13 perform a running in their respective axial direction traverse stroke, the traverse stroke of a friction roller 12 z. B. may be coupled by a lever arrangement with the traverse stroke of the other friction roller 13.
  • the traverse stroke of the respective friction roller 12; 13 generated by independent drives.
  • the two traversing strokes can be designed in opposite directions.
  • the traverse stroke of the respective friction roller 12; 13 can z. B. be generated by means of a gear from the rotational movement.
  • Both in the main stream B and in the secondary stream C is taken from the ink reservoir 07 ink each time by means of a five juxtaposed rollers 08; 09; 11; 12; 13; 03; 04; 06 having roller train applied to the forme cylinder 02, wherein the ink fountain roller 08, the film roller 09, the Farbstromtrennwalze 11, one of the friction rollers 12; 13 and one of the inking rollers 03; 04; 06 are each part of each of the forme cylinder 02 leading roller train.
  • roller 09 is arranged in the roller train between the ink fountain roller 08 and the paint flow separation roller 11, this roller 09 being designed as a film roller 09, wherein the film roller 09 has a special feature with regard to its lateral surface which will be discussed later.
  • the main stream B is that part of the color ink coming from the ink fountain roller 08 A, which is removed in the direction of rotation of the ink flow separation roller 11 of this ink flow separation roller 11 and forwarded as the first arranged in this main flow B friction roller 12 in the direction of the forme cylinder 02.
  • the part of coming from the ink duct 08 color flow A which is downstream of the main stream B in the direction of rotation of the ink flow separation roller 11 removed from this ink flow separating roller 11 and forwarded in the direction of the forme cylinder 02, is referred to as the secondary stream C taken from the ink reservoir 07 ink.
  • the secondary flow C can turn into further partial streams D; E be divided if at the arranged in the secondary flow C friction roller 13 more, in particular two of the inking rollers 03; 04; 06 are employed. Since the main stream B of coming from the ink duct 08 color flow A the forme cylinder 02 in the direction of rotation first, d. H. at least spatially in front of the secondary flow C and its partial flows D; E reached, such an inking unit is referred to as front-heavy. The in the flow C of color coming from the ink duct 08 color flow A ink is transported z. B. applied to the pre-colored by the main stream B forme cylinder 02.
  • the ink reservoir 07, from which the ink fountain roller 08 removes the ink to be transported to the forme cylinder 02 is, for. B. as a color box 07 or as a Paint tray 07 formed, wherein strung together on the ink fountain 07 or on the paint tray 07 in the axial direction of the ink duct 08 more, z. B. thirty to sixty paint knives (not shown) are provided, which are each preferably remotely adjustable with an adjusting means, not shown in their respective employment of the ink fountain roller 08 and actually employed, whereby a zonewise metering of the ink ductor 08 recorded ink is possible.
  • the adjustment made with the setting of the respective color meter dosage of the amount of color manifests itself in a proportional to this setting layer thickness of the ink in the relevant zone on the lateral surface of the Farbduktors 08.
  • the inking unit is therefore formed in the preferred embodiment as a zone inking unit.
  • the rollers 03; 04; 06; 08; 09; 11; 12; 13 of the inking unit have in their respective axial direction a length z. B. in the range of 500 mm to 2,600 mm, in particular in the range of 1,400 mm to 2,400 mm.
  • Your outer diameter is z. B. in the range between 50 mm and 300 mm, preferably between 80 mm and 250 mm.
  • the ink flow separation roller 11 has a lateral surface preferably made of an elastic material, for. B. made of a rubber.
  • the elastomer material of the ink flow separation roller 11 may have a layer thickness z. B. in the range between 1 mm and 20 mm, preferably between 5 mm and 15 mm.
  • the lateral surface of the ink flow separation roller 11 is preferably formed with a hardness in the range between 40 and 80 Shore A, in particular in the range between 50 and 60 Shore A, this measure for the hardness according to DIN 53505 is defined. The higher the value of this hardness specification, the greater the hardness of the material used in this case for the lateral surface of the paint flow separation roller 11.
  • the film roller 09 has a lateral surface with a stochastic structure, ie a lateral surface with an irregular distribution of elements structuring this surface, which are generally uneven Form and also have no particular preferred direction.
  • the lateral surface of the film roller 09 is preferably made of a plastic, preferably of a polyacrylate or polyamide, in particular of Rilsan, or in an alternative embodiment of copper.
  • the lateral surface of the film roller 09 is comparatively hard and has a hardness of at least 60 Shore D, preferably over 70 Shore D, in particular in the range of 80 to 90 Shore D, whereby this measure of the hardness is defined according to DIN 53505.
  • the stochastic structure is introduced in the preferred embodiment of the film roller 09 in their originally smooth and homogeneously formed lateral surface by shot peening, which is a particularly simple and therefore cost-effective production of advantageous for the transport of printing ink surface of this film roller 09.
  • Shore A there is no linear correlation between the Shore A and Shore D hardness test methods.
  • An appendix to DIN 53505 can be taken from a purely technical point of view that a hardness of 80 Shore A corresponds to approx. 30 Shore D.
  • the lateral surface of the friction rollers 12; 13 may each be made of plastic, preferably of a polyamide, in particular of Rilsan.
  • the lateral surface of the friction rollers 12; 13 is smooth and without a stochastic structure.
  • the inking rollers 03; 04; 06 each preferably have a lateral surface made of an elastomer material, preferably made of a rubber, wherein the defined according to DIN 53505 hardness of these lateral surfaces is preferably in the range between 35 and 60 Shore A.
  • the lateral surface of the ink ductor 08 which is preferably immersed in printing ink, may be a steel or a ceramic layer applied to a material forming the core of the ink ductor 08.
  • the stochastic structure of the lateral surface of the film roller 09 is preferably formed by embedded in this lateral surface cavities and depressions, which each Form structural elements, wherein the cavities and depressions in the radial direction of the film roller 09 has a depth in the range of z. B. 50 microns and 400 microns may be, this depth is formed unevenly with respect to the distributed on the lateral surface of the film roller 09 structural elements.
  • the film roller 09 as a rotation body actually limiting cylindrical surface has a roughness with an absolute surface roughness R t z. B. in the range of 100 microns to 120 microns and with an average roughness R z z. B. in the range of 60 microns to 80 microns, these values z. B.
  • a calculated according to DIN 4776 from an Abbott curve smallest material content Mr1 (corresponding to a supporting portion of the tips) of the lateral surface of the film roller 09 is z. In the range between 7% and 13%, preferably between 9% and 11%.
  • a according to DIN 4776 from the same Abbott curve determined largest material content Mr2 (corresponding to a supporting portion of the grooves) of the lateral surface of the film roller 09 is z. In the range between 80% and 95%, preferably between 85% and 90%.
  • Each of the open on the lateral surface of the film roller 09 cavities and / or depressions forms with respect to the cylindrical reference surface, ie with respect to the closed and smooth-walled imaginary cylindrical surface, a blank, wherein the empty space the opening cross section of the respective cavity or the respective recess in the Level of the reference surface corresponds.
  • the sum of the empty surfaces of all cavities and / or depressions present on the lateral surface of the film roller 09 forms a vacant space fraction relative to the closed cylindrical surface, the empty surface portion being between 20% and 30% of this cylindrical surface.
  • the cavities and / or depressions of the film roller 09 form a void volume, the void volume of all cavities and / or cavities per m 2 of imaginary cylindrical surface being present Wells at least 50,000 mm 3 , preferably at least 100,000 mm 3 , in particular at least 150,000 mm 3 .
  • the arranged on the lateral surface of the film roller 09 cavities and / or depressions thus structure with their respective Leer schizophreniaanteil and with their respective void volume, the lateral surface of the film roller 09 and form a relief there, said relief z.
  • B. is tunable to the rheological behavior of the ink to be transported, in particular the viscosity and / or the tack of the ink to be transported, so that the operations of filling and emptying of the cavities and / or depressions with the ink to be transported and arresting the transporting ink are optimized during their respective transport from the ink fountain roller 08 to the ink flow separation roller 11 in response to a provided for this film roller 09 on its lateral surface rotational speed, wherein a rotational speed of the film roller 09 conditional transport speed of the printed in this rotary printing press substrate z.
  • B. may be in the range up to 20 m / s, with such a rotary printing machine is used in particular in newspaper printing.
  • the advantageous effect of the introduced in the film roller 09 cavities and / or depressions comes especially at a higher transport speed of printed in this rotary printing material to advantage, eg. B. at a transport speed of at least 10 m / s, in particular in the range between 10 m / s and 15 m / s.
  • the production speed of the printing press can also by the speed of their printing cylinder 01; 02 be given, this speed of z. B. formed as a double circumferential cylinder rotating printing cylinder 01; 02 z. B. is more than 40,000 revolutions per hour.
  • a double circumferential cylinder has along its circumference two preferably equally long section lengths, each section length z. B. corresponds to a height of a newspaper page to be printed.
  • Both cooperating printing cylinder 01; 02 preferably have a magnitude equal in magnitude.
  • a further formed as a doctor roller 14 roller 14 may be employed or at least be employable, wherein the doctor roller 14th a squeegee 16 is employed.
  • the squeegee roller 14 is set to the ink flow separation roller 11 in the direction of rotation after the branch of the secondary flow C.
  • the scraped from the doctor roller 14 with the doctor blade 16 excess ink is z. B. returned to the ink reservoir 07, which in the Fig. 1 is indicated by the doctor blade 14 in the direction of rotation below the doctor blade 16 dripping ink.
  • a bridge roller 17 may be provided, wherein the bridge roller 17 at the same time to one of the inking rollers 03 and to a z. B. as a dampening roller 18 formed roller 18 of an adjustable to the forme cylinder 02 dampening unit is employed or at least employable.
  • the bridge roller 17 can preferably be adjusted to an inking roller 03 arranged in the main flow B. It smoothes again leading to the forme cylinder 02 main stream B coming from the ink fountain roller 08 color flow A.
  • the dampening unit is preferably as a dampening contactless applying moisturizing, z. B.
  • a spray dampening unit formed as a spray dampening unit, so that it has a spray bar 19, wherein preferably a plurality of arranged in the spray bar 19 spray nozzles the dampening solution to a z. B. sprayed as a dampening drive roller 21 roller 21 of the dampening unit.
  • the dampening agent sprayed onto the dampening roller 21 is replaced by another z. B. as a smoothing roll 22 formed roller 22 of the dampening unit on the dampening roller 18 and transferred from there to the forme cylinder 02.
  • the lateral surface of the dampening applicator roll 18 is preferably formed from an elastomeric material, preferably made of a rubber, wherein the defined according to DIN 53505 hardness of this lateral surface is preferably in the range between 25 and 30 Shore A and thus is relatively soft.
  • the lateral surface of the smoothing roller 22 is formed of chromium
  • the lateral surface of the dampening drive roller 21 is formed of a relatively soft elastomeric material, preferably of a rubber, wherein the defined according to DIN 53505 hardness of this lateral surface preferably in the range between 25 and 30 Shore A is.
  • the lateral surface of the smoothing roller 22 is also formed of an elastomeric material
  • the lateral surface of the smoothing roller 22 and the dampening roller 21 are preferably made of the same elastomeric material, for. B. made of a rubber, wherein the defined according to DIN 53505 hardness of these lateral surfaces is preferably in the range between 40 and 60 Shore A.
  • the lateral surface of the dampening drive roller 21 is harder in the second alternative than in the first alternative. Whether the first or the second alternative is used depends on how the rollers 18; 21; 22 of the dampening unit are driven.
  • the smoothing roller 22 a separate drive 57, z. B. an electric motor 57, which in the Fig.
  • dampening drive roller 21 is comparatively soft, as described above.
  • the dampening unit thus has no own drive 57, the aforementioned second alternative is the preferred embodiment.
  • the bridge roller 17 a independent drive 56, z.
  • an electric motor 56 wherein the rotating bridge roller 17 exerts a torque on the cooperating with their dampening roller 18, which in turn by friction, the smoothing roller 22, which then ultimately dampening roller 21 drives.
  • the smoothing roller 22 is preferably formed iridescent.
  • the traverse stroke extending in the axial direction of this smoothing roller 22 can be generated by a separate drive or the traversing motion is coupled to the drive for the rotational movement of this smoothing roller 22, so that the traverse stroke is derived by a gear from the rotational movement.
  • Fig. 1 is the direction of rotation of the respective rollers 03; 04; 06; 08; 09; 11; 12; 13; 14 of the inking unit, the bridge roller 17, the rollers 18; 21; 22 of the dampening unit and the printing cylinder 01; 02 each indicated by an associated arrow.
  • the printing cylinder 01; 02 are each with a drive 51; 52, z. B. an electric motor 51; 52 connected, these drives 51; 52 individually and independently controlled or regulated.
  • In the inking unit is only one of the friction rollers 12; 13, namely either the friction roller 12 or the friction roller 13 by a drive 53; 54, z. B. an electric motor 53; 54 driven.
  • Fig. 1 is the direction of rotation of the respective rollers 03; 04; 06; 08; 09; 11; 12; 13; 14 of the inking unit, the bridge roller 17, the rollers 18; 21; 22 of the dampening unit and the printing cylinder 01; 02 each indicated by an associated arrow.
  • the printing cylinder 01; 02 are each with a
  • the preferred embodiment is shown in which the friction roller 12 is driven and the friction roller 13 has no motor.
  • a drive 53 is shown only in dashed lines.
  • the remaining rollers 03; 04; 06; 08; 09; 11; 14 of the inking unit are friction-driven and thus do not have their own motor drive.
  • the upper friction roller 13 is pivoted by a mechanical device in a direction which increases its axial distance a13 to the forme cylinder 02, so that the central inking roller 04 substantially by a vertically upward movement of the Region between the forme cylinder 02 and the upper friction roller 13 can be removed.
  • the uppermost inking roller 06 of the inking unit is arranged such that, in its applied to the forme cylinder 02 operating state applied to the periphery of this inking roller 06 horizontal tangent T06 of an applied to the circumference of the forme 02 horizontal tangent T02 at a vertical distance a06 of at least 50 mm is located.
  • This vertical distance a06 forms, so to speak, an offset between the uppermost inking roller 06 and the forme cylinder 02.
  • This arrangement results from an operating page of the printing from sufficient accessibility to the forme cylinder 02, especially since all other belonging to the inking rollers 03; 04; 08; 09; 11; 12; 13; 14 are arranged well below the applied to the circumference of the uppermost inking roller 06 horizontal tangent T06.
  • the rollers 18; 21; 22 of the dampening unit are arranged substantially below the forme cylinder 02 and also do not limit the accessibility to the forme cylinder 02.
  • the accessibility to the forme cylinder 02 must z. B. therefore be given in order to change on the lateral surface of the forme cylinder 02 in the shortest possible time one or more printing plates.
  • a change of printing plates can be effected manually on the forme cylinder 02 by an operator operating the printing machine or automatically with the aid of a printing form magazine 58 preferably tangentially attached to the forme cylinder 02. Fig. 8 ).
  • Fig. 2 and 3 show in a schematic sketch again in the Fig. 1 represented part of a printing unit, now in particular the storage of the printing cylinder 01; 02 and a respective adjustment of the inking rollers 03; 04; 06, the film roller 09, the ink flow separation roller 11, the dampening roller 18 and the dampening drive roller 21 are highlighted.
  • Fig. 2 and 3 is different in each case Fig. 1
  • a representation of the doctor roller 14 and the bridge roller 17 has been dispensed with.
  • the representations in the Fig. 2 and 3 differ in that Fig. 2 shows a first operating state with preferably each closed compactors, which means that z. B.
  • FIG. 3 shows, however, a second operating state with preferably each open, ie interrupted by a gap pulleys, which means that z. B. the inking rollers 03; 04; 06 and / or the dampening roller 18 are turned off at least from the forme cylinder 02.
  • All rollers 03; 04; 06; 08; 09; 11; 12; 13; 14 of the inking unit, the rollers 18; 21; 22 of the dampening unit, the bridge roller 17 and the printing cylinder 01; 02 are each arranged in spaced-apart, opposite side frames 47; 48 of the printing machine ( Fig. 5 rotatably mounted, wherein at least the inking rollers 03; 04; 06 and the dampening roller 18, but preferably Also, the film roller 09 and the ink flow separation roller 11 of the inking unit and the dampening drive roller 21 of the dampening unit are each arranged radiallyhubtext.
  • the radial stroke of these rollers 03; 04; 06; 09; 11; 18; 21 refers to the fact that the respective axis of these rollers 03; 04; 06; 09; 11; 18; 21 or at least one of the ends of these rollers 03; 04; 06; 09; 11; 18; 21 opposite one to the respective roller 03; 04; 06; 09; 11; 18; 21 belonging frame-fixed bearing point is eccentrically adjustable.
  • the eccentric adjustment of each of the rollers 03; 04; 06; 09; 11; 18; 21 takes place in each case with the aid of preferably several, z. B. four each symmetrical and concentric about the respective axis of these rollers 03; 04; 06; 09; 11; 18; 21 arranged actuators 23, as exemplified in the Fig.
  • actuators 23 are actuated simultaneously, resulting from the axis of the respective roller 03; 04; 06; 09; 11; 18; 21 executed radial stroke of a vector sum of the respective radial force of actuated actuators 23.
  • the actuators 23 are z. B. subjected to a pressure medium; Preferably, they are pneumatically operated.
  • the actuators 23 are z. B. in each case one end of the respective roller 03; 04; 06; 09; 11; 18; 21 receiving roller lock arranged.
  • the from the axis of the respective roller 03; 04; 06; 09; 11; 18; 21 executable radial stroke is preferably in the range of a few millimeters, z. B. it is up to 10 mm, which is sufficient to the respective roller 03; 04; 06; 09; 11; 18; 21 of at least one adjacent cylindrical rotary body, for. B. the forme cylinder 02, turn off. It is also envisaged that with the respective actuators 23 one of the respective roller 03; 04; 06; 09; 11; 18; 21 is applied against its at least one adjacent rotating body applied contact pressure, wherein the measure of the set contact force by the with This adjustment controlled transport of printing ink or fountain solution affects the quality of the printed product produced in conjunction with this inking unit and / or dampening unit.
  • the contact force is built up when already touch contact between the respective roller 03; 04; 06; 09; 11; 18; 21 and its adjacent rotary body, but still by the operation of one or more actuators 23, the at least one effective radial force is increased.
  • an existing contact force in its amount changed, for. B. also be reduced.
  • one of the rollers 03; 04; 06; 09; 11; 18; 21 exerts on its adjacent body of revolution, is also a width of a touching contact between this roller 03; 04; 06; 09; 11; 18; Set 21 and the adjacent rotary body forming roller strip, wherein the roller strip as a flattening on the lateral surface of the roller 03; 04; 06; 09; 11; 18; 21, on the lateral surface of the roller 03; 04; 06; 09; 11; 18; 21 cooperating cylindrical rotating body or on the lateral surface of both represents.
  • the width of the roller strip is the chord forming by the flattening on the otherwise circular cross-section of the roller 03; 04; 06; 09; 11; 18; 21 or of the co-rotating body.
  • the flattening is due to an elastically deformable lateral surface of the roller 03; 04; 06; 09; 11; 18; 21 or the cooperating with her rotary body possible.
  • a roll strip is also referred to as a nip point.
  • Values for the respective pressure level to which the respective actuators 23 are to be set can be stored in the control unit controlling the actuators 23 in order to determine, for a specific roller 03; 04; 06; 09; 11; 18; 21 form a roller strip of a certain width to its adjacent body of revolution by the contact force resulting from the respective setting of the actuators 23.
  • the printing cylinder 01; 02, ie the transfer cylinder 01 and the forme cylinder 02 are, as shown in the Fig. 2 and 3 each in a storage unit 24 stored, preferably both ends of the respective printing cylinder 01; 02 are each stored in such a storage unit 24.
  • the storage unit 24 allows the respective printing cylinder 01; 02 a linear travel S, this travel S is preferably aligned horizontally in a printing unit with substantially vertical guidance of the printing material. Details of the preferably used storage unit 24 are in the Fig. 4 shown.
  • the one on / Abstellmechanismus for the respective printing cylinder 01; 02 integrating storage unit 24 has in addition to a bearing 26, z. B. radial bearing 26, for example, a cylindrical roller bearing 26, for rotatably supporting the respective printing cylinder 01; 02 storage means 27; 28 for a radial movement of the respective printing cylinder 01; 02 - for pressure on or pressure off - on.
  • the bearing unit 24 after its installation in or on a frame of the printing press frame-fixed, carrier-fixed bearing elements 27 and the movable against these bearing elements 28.
  • the carrier-fixed and movable bearing elements 27; 28 are as cooperating linear elements 27; 28 and formed together with corresponding sliding surfaces or intermediate rolling elements in total as a linear bearing.
  • the linear elements 27; 28 take in pairs a radial bearing 26 receiving, z. B. as a carriage 29 formed bearing block 29 between them. Bearing block 29 and the movable bearing elements 28 may also be made in one piece.
  • the carrier-fixed bearing elements 27 are arranged on a support 31, which in total with one of the side frames 47; 48 ( Fig. 5 ) is connected.
  • the carrier 31 is designed, for example, as a carrier plate which, for example, at least on a drive side of the respective printing cylinder 01; 02 a recess for the passage of a shaft, z. B. a drive shaft of an in Fig. 4 Having not shown cylinder pin.
  • the frame wall on the drive side preferably has a recess or an opening for a drive shaft. On the opposite side of the drive side does not necessarily have a recess or a recess in the side frame 47; 48 ( Fig. 5 ) be provided.
  • a length of the linear bearing in particular at least a length of the frame-mounted in the mounted state bearing means 27 of the linear bearing, in the direction of the travel S considered smaller than a diameter of the associated printing cylinder 01; 02.
  • the bearing block 29 preferably has only a single degree of freedom of movement in the direction of the travel S.
  • the storage unit 24 which is preferably designed as a unit which can be assembled as a whole, forms z. B. an optionally partially open housing from z. B. the carrier 31 and / or z. B. a frame (in Fig. 4 without reference z. B. the four bearing unit 24 to all four sides outwardly limiting plates).
  • a frame within this housing or this frame are the radial bearing 26 bearing block 29, the linear guides 27; 28 and in an advantageous embodiment, for. B. a bearing block 29 linearly adjusting actuator 32 or more such actuators 32 housed.
  • the frame-fixed bearing elements 72 are arranged substantially parallel to each other and define the direction of the travel S ( Fig. 4 ).
  • the decisive for the color transfer and thus the print quality, among other things, line force in the respective nip point is therefore not by a travel, but by the balance of forces between the force F and between the printing cylinders 01; 02 resulting line force F L and the resulting equilibrium defined.
  • the printing cylinder 01; 02 employed in pairs to each other by the bearing block 29 is acted upon by the corresponding set force F via the / the actuator (s) 32. If several (eg three or four) are in direct contact with each other Sequence adjacent pairwise co-operating printing cylinder 01; 02 executed without a possibility for fixing or limiting the travel S with a purely force-dependent adjustment mechanism, so it is indeed a. With respect to the required pressures (line forces) set system off and subsequently correct again, make a basic setting is due to the z. T. overlapping reactions difficult.
  • At least the respective transfer cylinder 01 of the printing unit in a Anstelllage found by the equilibrium of forces can be fixed or at least wegbegrenzbar.
  • the bearing unit 24 has on its side facing a pressure point - at least during the adjustment process - a positionable stop 33, which limits the travel S to the pressure point out.
  • the stop 33 is spatially variable in such a way that an effective stop as a stop surface 34, whose reference numerals in the Fig. 4 is shown in an outbreak of the bearing block 29, along the travel S at least in one area is variable. It is thus provided by adjustable stop 33 in an advantageous embodiment, an adjusting device by means of which the position of a pressure near the end position of the bearing block 29 is adjustable. For Wegbegrenzung / adjustment serves z. B. a wedge drive described below.
  • the placement of the stopper 33 can in principle be manual or via a an actuator 36 executed adjusting means 36 take place.
  • Fig. 4 Next is an advantageous embodiment in Fig. 4 not shown holding or clamping means provided by means of which the stop 33 can be set in the desired position.
  • at least one resilient element 37, z. B. spring element 37 is provided, which applies a force F R from the stop 33 in a direction away from there on the bearing block 29.
  • the spring member 37 causes a pressure-Ab-places in the event that the bearing block 29 is not prevented in another way from the movement.
  • the applied force F, the restoring force F R and the position of the stop 33 is selected such that no significant force .DELTA.F is transmitted between abutment 33 and the abutment surface of the bearing block 29 in the setting position ⁇ F
  • the contact force between the printing cylinders 01; 02 substantially determined by the voltage applied by the actuator 32 force F.
  • the decisive for the color transfer and thus the print quality, inter alia, line force F L in the respective nip point is therefore not primarily by a travel S, but defined at quasi-free stop 33 by the force F and the resulting balance. Basically, after finding the basic setting with the appropriate forces F, a removal of the stop 33 or a corresponding, only during the basic setting effective fixation conceivable.
  • the actuator 32 can in principle be designed as an arbitrary, a defined force F applying actuator 32.
  • the actuator 32 is designed as actuatable by a pressure medium adjusting means 32, in particular as a movable piston 32 by a fluid.
  • Advantageous in terms of possible tilting is the arrangement of several, here two, such actuators 32.
  • As fluid is preferably because of their incompressibility a liquid, eg. As an oil or water, used.
  • a controllable valve 38 is provided in the bearing unit 24. This is performed, for example, electronically controlled and provides a hydraulic piston in a first position without pressure or at least to a lower pressure level, while in another position a force F conditional pressure P is applied.
  • a non-designated leakage line is provided here for safety.
  • overload protection 39 z. B In order to avoid large arrival / Abstellwege and still guard railway winder, on the remote pressure side of the bearing block 29, a travel limit by a mobile, force-limited stop 39 as overload protection 39 z. B. be provided in conjunction with a spring element, which in the operative pressure-off position, d. H.
  • the pistons 32 are relieved and / or retracted, although serve as a stop 39 for the bearing block 29, but in the case of a web winder or other originating from the pressure point excessive forces yields and gives a greater way free.
  • a spring force of this overload protection 39 is therefore chosen to be greater than the sum of the forces from the spring elements 37.
  • When operational on / off is therefore only a very short travel, z. B. only 1 mm to 3 mm, providable.
  • the stop 33 is in the illustrated embodiment ( Fig. 4 ) designed as a transverse to the direction of the travel S movable wedge 33, wherein the same when moving Position of the respective effective stop surface 34 along the travel S varied.
  • the wedge 33 is supported for example on a carrier-fixed stop 41.
  • a wedge 33 stop 33 is moved by an actuator 36, for example, by a pressure medium actuable actuating means 36, z.
  • a pressure medium actuable actuating means 36 for example, by a pressure medium actuable actuating means 36, z.
  • This actuator 36 can either be effective in both directions or, as shown here, be designed as a one-way actuator, which operates against a return spring 43 when activated ,
  • the force of the return spring 43 is from o.
  • G. Reasons (largely force-free stop 33) chosen so weak that the wedge 33 is held only against gravity or vibration forces in its correct position.
  • the stop 33 can also be designed in a different way (for example as a plunger which can be adjusted and fixed in the direction of adjustment) in such a way that it has a stop surface 34 which can be fixed in the direction of the travel S and, at least during the setting process forms for the movement of the bearing block 29 in the direction of pressure point.
  • a location of the stopper 33 is for example directly parallel to the direction of the travel S by a drive means, for example, a pressure medium actuated cylinder with (double-acting) piston or an electric motor.
  • the Fig. 5 and 6 each show a printing tower 44 each having a plurality, z. B. eight of the in the Fig. 1 and 2 arrangements shown, each cooperating printing cylinder 01; 02 each have in conjunction with an employee employed on the respective form cylinder 02 inking and dampening unit.
  • FIG. 5 are in a first operating state of the printing tower 44 each two of the in the Fig. 1 and 2 illustrated arrangements of cooperating printing cylinder 01; 02 together with their respective associated inking and dampening in a so-called rubber-rubber arrangement against each other employed, the nip point between the hired transfer cylinders 01 forms a pressure point.
  • the printing tower 44 has z. B.
  • each pair of side frames 47; 48 of the in the Fig. 5 and 6 illustrated printing tower 44 are each more, z. B. four in the Fig. 1 and 2 illustrated arrangements of cooperating printing cylinder 01; 02 together with their respective associated inking and dampening vertically arranged one above the other, which by this arrangement, the execution z. B. a four-color printing is possible.
  • the (not shown) printing material preferably a material web, is preferably passed between the mutually employed transfer cylinders 01 from bottom to top through the printing tower 44 and can be printed on both sides at the same time.
  • printing tower 44 may be part of a newspaper printing press.
  • the printing tower 44 is arranged on a foundation 46. It can be provided that at least one of the pairs of side frames 47; 48 is linearly movable on the foundation 46.
  • Fig. 5 shows the first operating state of the printing tower 44, in which both pairs of side frames 47; 48 are employed against each other. In this first operating state of the printing tower 44, the printing press, the production of a printed product, for. As a newspaper run.
  • To execute manual Work on the printing units is at each to the longitudinal direction of the printing cylinder 01; 02 and rollers 03; 04; 06; 08; 09; 11; 12; 13; 18; 21; 22 parallel outer side of the printing tower 44 each preferably a height-adjustable pedestal 49 is provided.
  • the Fig. 6 shows the in the Fig. 5 illustrated printing tower 44 in a second operating state in which the pair of side frame 48 on the foundation 46 linearly from the example shown in this example as a stationary pair of side frame 47 moves away and thus, as well as a directional arrow with respect to the pair of side frame 48 indicates.
  • the transfer cylinders 01 involved in the pressure points are parked from each other.
  • the Fig. 7 also shows in the Fig. 5 illustrated printing tower 44 in its first operating state, in which in different pairs of side frames 47; 48 arranged and forming a common pressure point transfer cylinder 01 are employed against each other.
  • Fig. 5 is the one in the Fig. 7 illustrated printing tower 44, however, provided for the execution of a dampproof dry offset printing process, because the printing tower 44 of the Fig. 7 has no dampening units.
  • linearly adjustable storage units 24 in each of which one of the printing cylinder 01; 02 of this printing tower 44 is stored, not shown. Also, for the same reasons has been waived in the Fig.
  • each one radially movable bearings of the inking rollers 03; 04; 06 as well as preferably also the film roller 09 and the ink flow separating roller 11 of the respective inking units represent, because these bearings are each already in connection with the Fig. 2 been explained.
  • the pairs of side frames 47; 48 be designed to be mutually adjustable, as it is z. B. in conjunction with the Fig. 6 has been explained.
  • FIG. 8 shows again in connection with the Fig. 5 Illustrated printing tower 44, wherein now each form cylinder 02 is assigned in each case a printing forme magazine 58, which is shown in each case in a preferably tangentially employed to the respective forme cylinder 02 operating state.
  • Each printing forme magazine 58 has at least one first shaft 59 for feeding at least one new printing forme to the forme cylinder 02 and preferably also a second shaft 61 for receiving at least one printing forme discharged from the forme cylinder 02.
  • the two shafts 59; 61 define memory positions respectively for at least one printing form.
  • These shafts 59; 61 are preferably each aligned substantially horizontally and arranged one above the other at a vertical distance.
  • To fix a printing plate on the lateral surface of the forme cylinder 02 is at a short distance from the forme cylinder 02 to this preferably by a remote control z.
  • B. a rolling element 63 is provided, which temporarily fixed in the assembly process, a forme cylinder 02 to be supplied to the printing plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Control Of Electric Motors In General (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Rotary Presses (AREA)

Claims (15)

  1. Groupe d'encrage d'une machine à imprimer rotative, avec un rouleau porte-film (06), le rouleau porte-film (09) présentant une surface d'enveloppe avec une structure, la surface d'enveloppe du rouleau porte-film (06) présentant une dureté d'au moins 60 Shore D, caractérisé en ce que la surface d'enveloppe du rouleau porte-film (06) présente une structure stochastique, le structure stochastique étant introduite dans la surface d'enveloppe du rouleau porte-film (06) par projection de billes, la surface d'enveloppe du rouleau porte-film (06) présentant des creusements répartis irrégulièrement, d'une profondeur comprise dans la fourchette entre 50 µm et 400 µm, les creusements, ouverts sur la surface d'enveloppe du rouleau porte-film (06), constituant une proportion de surface vide située dans la fourchette comprise entre 20 % et 30 %, par rapport à une surface cylindrique imaginaire fermée de ce rouleau porte-film (06).
  2. Groupe d'encrage selon la revendication 1, caractérisé en ce que le rouleau porte-film (09) présente une surface d'enveloppe en un polyamide ou un polyacrylate ou en cuivre.
  3. Groupe d'encrage selon la revendication 1, caractérisé en ce qu'il présente un rouleau de séparation de flux d'encre (11), sachant qu'un unique rouleau (09) est disposé entre un rouleau encreur (08), recevant de l'encre d'impression issue d'un réservoir d'encre (07), et le rouleau de séparation de flux d'encre (11), ce rouleau (09) étant le rouleau porte-film (09).
  4. Groupe d'encrage selon la revendication 1, caractérisé en ce que plusieurs rouleaux applicateurs d'encre (03 ; 04 ; 06), plaqués simultanément sur un cylindre de forme (02), sont prévus, le rouleau applicateur d'encre (06) en position la plus haute de ce groupe d'encrage étant disposé de manière qu'une tangente (T06) horizontale, appliquée sur la périphérie de ce rouleau applicateur d'encre (06), se trouve à un espacement (a06) vertical d'au moins 50 mm d'une tangente (T02) horizontale, appliquée sur la périphérie du cylindre de forme (02).
  5. Groupe d'encrage selon la revendication 1, caractérisé en ce qu'il est réalisé pour pouvoir être chargé par l'avant.
  6. Groupe d'encrage selon la revendication 4, caractérisé en ce que tous les autres rouleaux (03 ; 04 ; 08 ; 09 ; 11 ; 12 ; 13 ; 14), appartenant à ce groupe d'encrage, sont disposés au-dessous de la tangente (T06) horizontale, appliquée sur la périphérie du rouleau applicateur d'encre (06) en position la plus haute.
  7. Groupe d'encrage selon la revendication 1, caractérisé en ce qu'il est associé, conjointement à un groupe de mouillage, au même cylindre de forme (02), tous les rouleaux (18 ; 21 ; 22) du groupe de mouillage étant disposés sensiblement au-dessous du cylindre de forme (02).
  8. Groupe d'encrage selon les revendications 1, 3 ou 4, caractérisé en ce qu'au moins le rouleau porte-film (09) et/ou le rouleau de séparation de flux d'encre (11) et/ou les rouleaux applicateurs d'encre (03 ; 04 ; 06) sont disposés chacun de manière à pouvoir effectuer une course de déplacement radiale, la course radiale de ces rouleaux (03 ; 04 ; 06 ; 09 ; 11) se référant au fait que l'axe respectif de ces rouleaux (03 ; 04 ; 06 ; 09 ; 11), ou au moins d'une des extrémités de ces rouleaux (03 ; 04 ; 06 ; 09 ; 11), est réglable par rapport à un point de tourillonnement fixe par rapport au bâti, appartenant au rouleau (03 ; 04 ; 06 ; 09 ; 11) respectif.
  9. Groupe d'encrage selon la revendication 3, caractérisé en ce que le rouleau de séparation de flux d'encre (11) subdivise un flux d'encre (A), venant du rouleau encreur (08), en un flux principal (B) et un flux annexe (C).
  10. Groupe d'encrage selon la revendication 3, caractérisé en ce que le rouleau de séparation de flux d'encre (11) est plaqué sur deux rouleaux broyeurs (12 ; 13), un rouleau broyeur (12 ; 13) étant disposé respectivement dans le flux principal (B) et dans le flux annexe (C).
  11. Groupe d'encrage selon la revendication 10, caractérisé en ce qu'au moins l'un des rouleaux broyeurs (12 ; 13) présente une surface d'enveloppe en cuivre ou en rilsan.
  12. Groupe d'encrage selon la revendication 3, caractérisé en ce que le rouleau de séparation de flux d'encre (11) présente une surface d'enveloppe en un matériau élastique.
  13. Groupe d'encrage selon la revendication 3, caractérisé en ce que le rouleau de séparation de flux d'encre (11) présente une surface d'enveloppe d'une dureté située dans la fourchette comprise entre 50 et 80 Shore A.
  14. Groupe d'encrage selon la revendication 3, caractérisé en ce que des racles à encre, dosant par zones l'encre d'impression reçue du réservoir d'encre (07), sont prévues sur le rouleau encreur (08).
  15. Groupe d'encrage selon la revendication 1, caractérisé en ce que la machine à imprimer rotative, présentant ce groupe d'encrage, est réalisée sous forme d'une machine d'impression de journaux.
EP07728166A 2006-05-23 2007-04-17 Mécanisme d'encrage de presse rotative comprenant un cylindre porte-film Not-in-force EP2019752B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102006024029 2006-05-23
DE102006030057A DE102006030057B4 (de) 2006-05-23 2006-06-29 Farbwerk einer Rotationsdruckmaschine
DE200610042590 DE102006042590B4 (de) 2006-09-11 2006-09-11 Rotationsdruckmaschine mit mindestens einem eine Farbstromtrennwalze aufweisenden Farbwerk
PCT/EP2007/053701 WO2007134919A1 (fr) 2006-05-23 2007-04-17 Mécanisme d'encrage de presse rotative comprenant un cylindre porte-film

Publications (2)

Publication Number Publication Date
EP2019752A1 EP2019752A1 (fr) 2009-02-04
EP2019752B1 true EP2019752B1 (fr) 2009-07-29

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EP07728166A Not-in-force EP2019752B1 (fr) 2006-05-23 2007-04-17 Mécanisme d'encrage de presse rotative comprenant un cylindre porte-film

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Country Link
US (1) US8001895B2 (fr)
EP (1) EP2019752B1 (fr)
CN (1) CN101973156B (fr)
AT (1) ATE437753T1 (fr)
DE (2) DE502007001203D1 (fr)
ES (2) ES2327186T3 (fr)
WO (1) WO2007134919A1 (fr)

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DE4439144C2 (de) 1994-11-03 1997-04-30 Roland Man Druckmasch Farbwerk einer Rotationsoffsetdruckmaschine
DE19804106C2 (de) * 1998-02-03 2002-10-31 Roland Man Druckmasch Transport- und Montagesystem sowie Verfahren zum Befördern von Druckformen
DE10039279A1 (de) 1999-09-09 2001-03-15 Heidelberger Druckmasch Ag Walze für Druckmaschinen
DE10028478A1 (de) 2000-06-08 2001-12-13 Roland Man Druckmasch Verfahren zur Herstellung einer Rasterwalze
DE10133634B4 (de) * 2000-08-09 2011-06-22 Heidelberger Druckmaschinen AG, 69115 Farbwerk, insbesondere einer Offsetdruckmaschine
EP1534522B1 (fr) 2002-09-06 2009-09-30 Koenig & Bauer Aktiengesellschaft Systemes d'encrage de machines d'impression rotative
DE10314344B3 (de) * 2003-03-28 2004-08-26 Koenig & Bauer Ag Vorrichtung zum Speichern eines einem Zylinder einer Druckmaschine zuzuführenden Aufzugs
DE102004004665B4 (de) * 2004-01-30 2005-12-29 Koenig & Bauer Ag Vorrichtung zum Einstellen einer von einer Walze in einem Walzenstreifen auf einen benachbarten Rotationskörper ausgeübten Anpresskraft und zum Anstellen der Walze an den Rotationskörper oder zum Abstellen der Walze von dem Rotationskörper
DE102004014308A1 (de) * 2004-03-24 2005-10-20 Roland Man Druckmasch Walzen und Zylinder mit einem Stahlkern für Offset-Druckmaschinen
JP4402995B2 (ja) 2004-03-25 2010-01-20 株式会社小森コーポレーション 輪転印刷機のインキ装置
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
DE102004040150A1 (de) 2004-08-19 2006-02-23 Man Roland Druckmaschinen Ag Druckeinheit sowie Farbwerk
DE102006015481B4 (de) 2006-01-04 2009-07-09 Koenig & Bauer Aktiengesellschaft Walze einer Druckmaschine

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ES2336042T3 (es) 2010-04-07
WO2007134919A1 (fr) 2007-11-29
DE502007001203D1 (de) 2009-09-10
DE502007002749D1 (de) 2010-03-18
US20090090261A1 (en) 2009-04-09
CN101973156A (zh) 2011-02-16
ATE437753T1 (de) 2009-08-15
ES2327186T3 (es) 2009-10-26
US8001895B2 (en) 2011-08-23
EP2019752A1 (fr) 2009-02-04
CN101973156B (zh) 2012-09-05

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