EP2019753A2 - Assemblies in the printing unit of a rotary press - Google Patents
Assemblies in the printing unit of a rotary pressInfo
- Publication number
- EP2019753A2 EP2019753A2 EP07729400A EP07729400A EP2019753A2 EP 2019753 A2 EP2019753 A2 EP 2019753A2 EP 07729400 A EP07729400 A EP 07729400A EP 07729400 A EP07729400 A EP 07729400A EP 2019753 A2 EP2019753 A2 EP 2019753A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- arrangement according
- printing
- ink
- 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.)
- Granted
Links
Classifications
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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
- 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
- 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
- B41F31/26—Construction of inking 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
-
- 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
- B41F31/304—Arrangements for inking roller bearings, forks or supports
-
- 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
Definitions
- the invention relates to arrangements in a printing unit of a rotary printing press according to the preamble of claim 1 or 3.
- 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 cylinder applying inking rollers wherein a color coming from the ink fountain ink stream is provided in a main stream and in a sidestream dividing paint flow separation roller, said in the main stream and in the side stream each one of the ink jet separating roller on at least one of the inking rollers ink transfer roller is arranged.
- the roller between the ink fountain roller and the ink flow separating roller comprises four rollers arranged in series and is thus relatively long, so that a relatively thick ink layer is to be applied to the ink roller in the roller following a relatively thick ink layer when the inking rollers to apply a very specific amount of ink on the printing cylinder ,
- the ink layer thickness on the nip downstream roller is indeed lower, but the respective ink layer thickness is necessarily relatively high at least on the first of the four near the ink reservoir rollers due to the many cleavages to the printing cylinder, which is just In a high-speed rotary printing machine leads to increased color mist.
- 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 is known, a coming from the ink fountain ink stream into a main stream and into a By-pass dividing ink flow separation 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.
- DE 10 2004 037 889 A1 discloses a device for supporting a cylinder of a printing unit with a bearing block movable along a travel in linear bearings, having a rotary bearing, wherein the bearing is designed as a bearing unit in the form of a unit which can be assembled as a whole, which adjoins
- the rotary bearing comprises both cooperating bearing elements, which allow the relative movement of the bearing block.
- a paint roller with a trained as a sleeve shell part of a microporous elastomeric material is known, wherein in the z.
- Example 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, a throwing away to avoid color spray.
- From DE 30 04 295 A1 discloses a fluid roller with a hard surface is known, wherein on the outer surface of the cylindrical core a hard metal coating z. B. chrome z. B.
- the lateral surface is structured by engraving preferably with intersecting lines in a cell pattern, surface hardened by a nitriding and then subjected to an oxidation process, wherein the oxidation process on the outer surface of the roller a outer mainly of Fe 3 O 4 existing layer is formed.
- DE 10 2004 040 150 A1 discloses a printing unit with an inking unit having at least one ink jet separating roller, wherein only a single roller is arranged in the inking unit between a printing ink from a ink reservoir receiving ink fountain roller and the ink jet separating roller, this roller being formed as a film roller. wherein the film roll has a shell surface with a structure.
- a film roll for inking units 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 ° Store.
- From DE 100 28 478 A1 discloses a method for producing a preferably made of steel anilox roller is provided on its surface with wells, wherein the wells are preferably produced by shot peening.
- a disadvantage of this anilox roller is that a jacket surface made of steel, especially in a wet offset printing process, causes a disturbance in the color transport after a short period of operation, since such a jacket surface tends to run quickly free of color.
- the invention has for its object to provide arrangements in a printing unit of a rotary printing press, which are particularly suitable for use in a newspaper printing press.
- the advantages that can be achieved with the invention are in particular that the proposed arrangements also contribute to the production of a printed product with a high print quality under the conditions of use in a high-speed rotary printing press. They also allow a short time executable change of several arranged on the forme cylinder printing forms. If the arrangements are completed to an employee employed to the forme inking unit, this inking unit is wear-resistant even at a transport speed of a printed in this rotary printing material of more than 10 m / s and this inking is also less prone to color fogging.
- this has a lateral surface with a hardness of at least 60 Shore D, preferably over 70 Shore D, in particular in the range of 80 to 90 Shore D, so they under the conditions of use in a high-speed rotary printing machine with a transport speed of the printing substrate of more than 10 m / s is less wear 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 become.
- Rilsan ie a polyamide from 1 1 -Aminoundecan Textre (Rilsan B, PA 1 1) or from ⁇ -laurolactam (Rilsan A, PA 12), said polyamide materials having a hardness of at least 60 Shore D, preferably have over 70 Shore D, with particularly large values for the hardness can be achieved by the fact that the polyamide material in question is reinforced by glass fibers. It is noteworthy that in the inking unit between the ink fountain roller and the Farbstromtrennwalze there is a very large difference in the respective peripheral speeds, so that the lateral surface of the arranged between the ink fountain roller and the Farbstromtrennwalze film roller is exposed to high mechanical and possibly thermal stress.
- 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 print 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, are the color layers on the rollers mainly causing a color mist, ie in particular relatively thin on the film roller, which is why the proposed inking unit also tends to fog 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 ,
- the features proposed with regard to the film roll lead to a film roll which, under the conditions of use in a high-speed rotary printing press, has a long service life and a very good ink transfer behavior together with a low color fogging and is also inexpensive to produce.
- Another advantage is that the proposed arrangements 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.
- an inking unit formed from the proposed arrangements 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 repeating 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.
- Figure 1 shows a part of a printing unit with an inking unit and a dampening unit.
- Fig. 2 shows the part of the printing unit shown in FIG. 1 with a storage of
- Fig. 3 shows the part of the printing unit shown in FIG. 1 with a storage of
- FIG. 4 is a sectional view of a bearing unit of a printing cylinder
- FIG. 5 shows a printing tower of a printing machine with a plurality of arrangements shown in FIGS. 1 to 3 in a first operating position
- FIG. 6 shows the printing tower shown in FIG. 5 in a second operating position
- FIG. 7 shows the printing tower shown in FIG. 5 with printing units in each case without a dampening unit for carrying out a dry offset method
- FIG. 8 shows the printing tower shown in FIG. 5, each with one printing form magazine attached to the respective forme cylinders.
- 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 its revolutions on a substrate, not shown, preferably on a material web, in particular on a paper web, at least one printed image.
- at least one inking unit and a dampening unit are employed on the forme cylinder 02.
- the inking unit has a plurality, preferably at least three inking rollers 03; 04; 06, which are employed in a current production process of the rotary printing machine to the forme cylinder 02. Between 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; 1 1; 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 roll 1 1 formed as a paint flow separating roll 1 which divides a paint stream A coming from the ink fountain roller 08 into a main stream B and a side stream C.
- the course of the main flow B leading to the forme cylinder 02 is indicated by a solid line and the course of the secondary flow C which likewise leads to the forme cylinder 02 is indicated by a dashed line.
- the main stream B and in the secondary flow C is one of the ink flow separating roller 1 1 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. In both drive variants, 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 ink taken from the ink reservoir 07 is in each case lined up by means of a five-row Rollers 08; 09; 1 1; 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 1 1, 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 ink flow separating roller 11, this roller 09 being designed as a film roller 09, wherein the film roller 09 has a special feature with respect to its lateral surface, which will be discussed later.
- the main stream B is that part of coming from the ink fountain roller 08 color flow A, which is removed in the direction of rotation of the ink flow separation roller 1 1 of this ink flow separation roller 1 1 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 1 1 detached from this Farbstromtrennwalze 1 and forwarded in the direction of the forme cylinder 02, referred to as the secondary stream C of the ink reservoir 07 ink taken.
- 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, ie at least spatially before the side stream C and its partial streams 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. formed as a paint box 07 or as a paint tray 07, 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; 1 1; 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 1 1 has a lateral surface preferably made of an elastic material, for. B. made of a rubber.
- the lateral surface of the paint flow separation roller 1 1 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 of the hardness is defined according to DIN 53505. The higher the value of this hardness specification, the greater the hardness of the material, which is used in this case for the lateral surface of the paint flow separation roller 1 1.
- the film roller 09 has a special feature of its lateral surface on a lateral surface with a stochastic structure, d. H. a lateral surface with an irregular distribution of elements structuring this surface, which i. d. R. have a non-uniform shape and also 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 elastomeric material, preferably made of a rubber, which according to DIN 53505 defined 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 roughness R, 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 1 1%.
- 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 areas of all existing on the lateral surface of the film roller 09 cavities and / or Recesses forms a void fraction relative to the closed cylindrical surface, the void fraction being at most 35% of this cylindrical surface and preferably between 20% and 30%.
- the cavities and / or depressions of the film roller 09 form a void volume, the void volume of all cavities and / or depressions present per m 2 of imaginary cylindrical surface being 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 during their respective transport from the ink fountain roller 08 to the ink stream separating roller 1 1 as a function of a provided for this film roller 09 on its lateral surface rotational speed are optimized, wherein the rotational speed of the film roller 09 conditional transport speed of the printed in this rotary printing machine printing material z.
- 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.
- the ink flow separation roller 1 1 formed as a squeegee roller 14 14 may be employed or at least be adjustable, wherein the squeegee roller 14 a squeegee 16 is employed.
- the doctor roller 14 is employed on the ink flow separation roller 1 1 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. in the ink reservoir 07, which is indicated in Fig. 1 by the doctor roller 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. That on the Dampening drive roller 21 sprayed dampening solution is from 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. In the case that the smoothing roller 22 a separate drive 57, z. B.
- an electric motor 57 which is shown in dashed lines in Fig. 1 due to its only optional presence, is its lateral surface formed of chrome and the lateral surface of the driven with this smoothing roller 22 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 is an 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 the direction of rotation of the respective rollers 03; 04; 06; 08; 09; 1 1; 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.
- the preferred embodiment is shown, in which the friction roller 12 is driven and the friction roller 13 has no motor.
- 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 a voltage applied to the circumference of the forme 02 horizontal tangent T02 at a vertical distance aO6 of at least 50 mm is located.
- This vertical distance aO6 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; 1 1; 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 carried out manually on the forme cylinder 02 by an operator operating the printing machine or automatically by means of a printing form magazine 58 (FIG. 8) preferably tangentially attached to the forme cylinder 02.
- FIGS. 2 and 3 show in a schematic sketch again the part of a printing unit shown in FIG. 1, wherein 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 jet separating roller 1 1, the dampening roller 18 and the dampening roller 21 are highlighted.
- FIGS. 2 and 3 in each case in contrast to FIG. 1, for the sake of simplicity, a representation of the doctor roller 14 and the bridge roller 17 has been dispensed with.
- FIGS. 2 and 3 differ in that FIG. 2 shows a first operating state with roller belts preferably closed in each case, which means that, for example, FIG. B.
- Fig. 3 shows 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; 1 1; 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) mounted rotatably, 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 separating roller 1 1 of the inking unit and the dampening roller 21 of the dampening unit are each arranged radiallyhubtext.
- the radial stroke of these rollers 03; 04; 06; 09; 1 1; 18; 21 refers to the fact that the respective axis of these rollers 03; 04; 06; 09; 1 1; 18; 21 or at least one of the ends of these rollers 03; 04; 06; 09; 1 1; 18; 21 opposite one to the respective roller 03; 04; 06; 09; 1 1; 18; 21 belonging frame-fixed bearing point is eccentrically adjustable.
- the eccentric adjustment of each of the rollers 03; 04; 06; 09; 1 1; 18; 21 takes place in each case with the aid of preferably several, z. B.
- actuators 23 are actuated simultaneously, resulting from the axis of the respective roller 03; 04; 06; 09; 1 1; 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; 1 1; 18; 21 receiving roller lock arranged.
- the from the axis of the respective roller 03; 04; 06; 09; 1 1; 18; 21 executable Radialhub 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; 1 1; 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; 1 1; 18; 21 is applied against its at least one adjacent rotating body applied contact pressure, the degree of the set contact force by the controlled with this setting transport of ink or dampening influences the quality of the printed product generated in connection with this inking and / or dampening.
- the contact force is built up when already touch contact between the respective roller 03; 04; 06; 09; 1 1; 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; 1 1; 18; 21 exerts on its adjacent body of revolution, is also a width of a touching contact between this roller 03; 04; 06; 09; 1 1; 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; 1 1; 18; 21, on the lateral surface of the roller 03; 04; 06; 09; 1 1; 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; 1 1; 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; 1 1; 18; 21 or the cooperating with her rotary body possible.
- a roll strip is also called a nip point.
- values for their respective pressure level can be stored, to which the respective actuators 23 are set to for a particular roller 03; 04; 06; 09; 1 1; 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, d. H. the transfer cylinder 01 and the forme cylinder 02, according to their representation in FIGS. 2 and 3, are each mounted in a bearing unit 24, wherein preferably both ends of the respective printing group cylinders 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 preferred bearing unit 24 are shown in FIG.
- 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 embodied, 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.
- a drive shaft of a cylinder pin not shown in Fig. 4.
- 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) may 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 numerals, for example, the four the bearing unit 24 to all four sides outwardly bounding 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 one another and define the direction of the travel S (FIG. 4).
- the decisive for the color transfer and thus the print quality, inter alia, line force in the respective nip-site 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.
- the actuator (s) 32 are several (eg three or four) adjacent to each other in a direct neighboring each pairwise cooperating 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.
- 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 numeral in 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 stop 33 can in principle be done manually or via an actuating means 36 designed as an actuator 36.
- a holding or clamping means (not shown in FIG. 4) is provided by means of which the stop 33 can be fixed 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. Ie. 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 between stop 33 and the stop surface of the bearing block 29 in Anstelllage no significant force .DELTA.F is transmitted, for example
- the contact force between the printing cylinders 01; 02 essentially determined by the force applied by the actuator 32 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. In principle, after finding the basic setting with the appropriate forces F, it would be conceivable to remove the stop 33 or a corresponding fixation effective only during the basic setting.
- 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 be provided in conjunction with a spring element, which in the operative pressure-off position, ie the piston 32 are relieved and / or retracted, although serve as a stop 39 for the bearing block 29, in the case of a web winder or other from the pressure point
- 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.
- the stop 33 is in the illustrated embodiment (Fig. 4) designed as a transversely to the direction of the travel S movable wedge 33, wherein the same moves the position of the respective effective stop surface 34 along the travel S varies.
- 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.
- 5 and 6 each show a printing tower 44 each having a plurality, z. B.
- 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 in a first operating state of the printing tower 44, two of the arrangements of cooperating printing cylinder cylinders 01 shown in FIGS. 1 and 2 are shown; 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. two pairs of spaced from each other, opposite standing side frames 47; 48, wherein in Figs. 5 and 6 of each of these pairs only one of the respective pair forming frame walls is shown.
- each pair of side frames 47; 48 of the printing tower 44 shown in FIGS. 5 and 6 are each a plurality, z. B. four of the arrangements shown in Figures 1 and 2 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.
- the printing tower 44 shown in FIGS. 5 and 6 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.
- Fig. 6 shows the printing tower 44 shown in Fig. 5 in a second operating condition in which the pair of side frames 48 on the foundation 46 are linearly moved from the pair of side frames 47, shown stationary in this example, and parked therewith it also indicates a directional arrow with respect to the pair of side frame 48.
- the transfer cylinders 01 involved in the pressure points are parked from each other.
- FIG. 7 likewise shows the printing tower 44 shown in FIG. 5 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. 7 Pressure tower 44, however, to perform a dampeness
- FIG. 7 shows the linearly adjustable bearing units 24 shown in FIG. 4, in each of which one of the printing group cylinders 01; 02 of this printing tower 44 is stored, not shown. Also, it has been omitted for the same reasons, in Figure 7, each radialhubChen bearings of the inking rollers 03; 04; 06 as well as preferably also the film roller 09 and the ink flow separating roller 1 1 of the respective inking units, because these bearings have each already been explained in connection with FIG. 2. Likewise, the pairs of side frames 47; 48 be designed to be mutually adjustable, as it is z. B. has been explained in connection with FIG. 6.
- FIG. 8 again shows the printing tower 44 explained in conjunction with FIG. 5, wherein each printing cylinder 02 is assigned a printing forme magazine 58, which is shown in each case in an operating state which is preferably tangential to the respective forme cylinder 02.
- 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 fixes a printing forme to be supplied to the forme cylinder 02 in the assembly process.
- bearing means bearing element Bearing element, bearing element bearing block, slide actuator actuator, piston, hydraulic piston stop, wedge stop surface - actuator, actuating means, piston spring acting element, spring element valve stop, overload protection - stop transmission element, piston rod return spring pressure tower - foundation side frame side frame pedestal - drive, electric motor Drive, electric motor drive, electric motor drive, electric motor drive, electric motor 57 drive, electric motor
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08168444A EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
EP07729400A EP2019753B1 (en) | 2006-05-23 | 2007-05-22 | Assemblies in the printing unit of a rotary press |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006024029 | 2006-05-23 | ||
DE102006030057A DE102006030057B4 (en) | 2006-05-23 | 2006-06-29 | Inking unit of a rotary printing machine |
DE200610042590 DE102006042590B4 (en) | 2006-09-11 | 2006-09-11 | Rotary printing machine with at least one color flow separation roller having inking unit |
PCT/EP2007/053701 WO2007134919A1 (en) | 2006-05-23 | 2007-04-17 | Inking unit of a rotary press, comprising a film roller |
EP07729400A EP2019753B1 (en) | 2006-05-23 | 2007-05-22 | Assemblies in the printing unit of a rotary press |
PCT/EP2007/054961 WO2007135155A2 (en) | 2006-05-23 | 2007-05-22 | Assemblies in the printing unit of a rotary press |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08168444A Division EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
EP08168444A Division-Into EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
EP08168444.1 Division-Into | 2008-11-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2019753A2 true EP2019753A2 (en) | 2009-02-04 |
EP2019753B1 EP2019753B1 (en) | 2010-01-27 |
Family
ID=38480430
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07729400A Active EP2019753B1 (en) | 2006-05-23 | 2007-05-22 | Assemblies in the printing unit of a rotary press |
EP08168444A Active EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08168444A Active EP2033785B1 (en) | 2006-05-23 | 2007-05-22 | Arrangement in a printing unit of a rotation printing press |
Country Status (4)
Country | Link |
---|---|
US (1) | US8006617B2 (en) |
EP (2) | EP2019753B1 (en) |
AT (1) | ATE456456T1 (en) |
WO (1) | WO2007135155A2 (en) |
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DE102006037615A1 (en) * | 2006-08-10 | 2008-02-14 | Felix Böttcher Gmbh & Co. Kg | Rubber rollers with rough surface |
DE102007000604B4 (en) * | 2007-09-27 | 2014-05-08 | Koenig & Bauer Aktiengesellschaft | printing tower |
DE102008001848A1 (en) | 2008-05-19 | 2009-12-03 | Koenig & Bauer Aktiengesellschaft | Arrangement in a printing unit of a printing press |
DE102008053406A1 (en) * | 2008-10-27 | 2010-04-29 | Robert Bosch Gmbh | Method for automatic axis correction in a processing machine for processing a material web |
DE102011078285B3 (en) * | 2011-06-29 | 2012-07-05 | Koenig & Bauer Aktiengesellschaft | Rollers e.g. film- and ink fountain rollers, arrangement for dry offset printing machine for printing newspaper, has rollers arranged in inking unit, where friction coefficient of rollers is adjusted for movement between surfaces |
DE102011078283B4 (en) * | 2011-06-29 | 2015-01-22 | Koenig & Bauer Aktiengesellschaft | Rotary printing machine with a forme cylinder and an inking unit employed on this forme cylinder |
DE102013210987A1 (en) * | 2013-06-13 | 2014-12-18 | Schaeffler Technologies Gmbh & Co. Kg | bearing arrangement |
DE102013218487B4 (en) | 2013-09-16 | 2017-03-30 | Koenig & Bauer Ag | Printing unit of a printing machine and monitoring device for this printing unit |
CN106739478A (en) * | 2016-12-12 | 2017-05-31 | 泉州市西格玛智能工业机械有限公司 | A kind of cloth print system |
CN108909180B (en) * | 2018-06-28 | 2023-10-17 | 河南宝钢制罐有限公司 | Ink transfer dividing roller test system and method for ink unit of metal can printer |
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-
2007
- 2007-05-22 AT AT07729400T patent/ATE456456T1/en active
- 2007-05-22 EP EP07729400A patent/EP2019753B1/en active Active
- 2007-05-22 US US12/227,647 patent/US8006617B2/en not_active Expired - Fee Related
- 2007-05-22 WO PCT/EP2007/054961 patent/WO2007135155A2/en active Application Filing
- 2007-05-22 EP EP08168444A patent/EP2033785B1/en active Active
Non-Patent Citations (1)
Title |
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See references of WO2007135155A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007135155A2 (en) | 2007-11-29 |
WO2007135155A3 (en) | 2008-01-10 |
EP2033785A2 (en) | 2009-03-11 |
EP2019753B1 (en) | 2010-01-27 |
ATE456456T1 (en) | 2010-02-15 |
US8006617B2 (en) | 2011-08-30 |
US20090272284A1 (en) | 2009-11-05 |
EP2033785B1 (en) | 2013-01-09 |
EP2033785A3 (en) | 2012-08-29 |
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