EP1911586B1 - Short inking unit for a processing machine - Google Patents
Short inking unit for a processing machine Download PDFInfo
- Publication number
- EP1911586B1 EP1911586B1 EP07018331.4A EP07018331A EP1911586B1 EP 1911586 B1 EP1911586 B1 EP 1911586B1 EP 07018331 A EP07018331 A EP 07018331A EP 1911586 B1 EP1911586 B1 EP 1911586B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- printing press
- press according
- core
- ink application
- 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
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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
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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
- B41F31/26—Construction of inking rollers
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- 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
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- 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
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- 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
Definitions
- the invention relates to a printing machine with a short inking unit according to the preamble of claim 1.
- Such short inking units are preferably used in printing and / or painting machines.
- Short inking units according to the anilox principle are characterized in that these ink roller assemblies and a color ink free ink supply, especially without ink fountain keys, have that guarantee a uniform coloring of the printing plate.
- a color of preferably lower viscosity than conventional inking units is used.
- a short inking unit of this kind is out DE 44 31 464 A1 known, which has a metering system with a short ink roller train.
- the dosing system comprises an anilox roll also referred to as anilox roll with circumferentially arranged, cup or groove-shaped, can be filled with paint or varnish depressions and intervening webs.
- the dosing system comprises a squeegee device, especially a chamber doctor blade, which scraps the anilox roller circumferentially.
- the anilox roller cooperates with an inking roller forming the short roller train, which in turn is in operative connection with a plate / forme cylinder.
- the diameters of blanket cylinder, forme cylinder and inking roller are the same.
- the peripheral speed of the inking roller is different from the peripheral speed of the anilox roller.
- the plate / forme cylinder is still with a blanket cylinder and the blanket cylinder is operatively connected to a printing material leading impression cylinder.
- Another inking unit comprises a paint box with a doctor blade, an anilox roller, an inking roller and a forme cylinder.
- the short inking unit is tempered by the rollers or cylinders can be cooled or heated by a temperature control.
- the amount of ink can be controlled by means of characteristic curves, taking into consideration the type of printing material, the color type and the color temperature.
- a short inking unit which has a simple color cylinder with associated ink fountain and arranged on the ink fountain ink dosing. Furthermore, this inking unit comprises at least one color roller with a hard surface finish downstream inking roller with an elastic surface, which are a plate cylinder and this in turn a blanket cylinder downstream.
- the diameter of the inking roller corresponds in a first embodiment, the diameter of the plate cylinder diameter.
- two ink applicator rollers resting against the plate cylinder are provided between the ink cylinder and the plate cylinder, the diameters of which correspond to the plate cylinder diameter or whose diameter closely approximates the plate cylinder diameter, the diameters of the inking rollers being approximately 1 mm thicker than the diameter of the plate cylinder for subsequent regrinding are.
- a short inking unit which includes, among other things, an anilox roller and an inking roller.
- the diameter of the inking roller corresponds to the diameter of the printing plate (on the plate cylinder).
- the inking roller has an elastomeric roller cover.
- a single roll is known, on the roll core concentrically a foam rubber layer is arranged. Concentric on the foam rubber layer is an elastic rubber layer. Preferably, a rubber blanket coated on both sides is arranged between the roll core and the foam rubber layer, and the layers are vulcanized with one another and thus adhesively bonded.
- the layers can be arranged in several layers on the roll core.
- an inking unit is known in a web offset printing press.
- the inking unit shows an inking roller, which is equipped with an approximately equal diameter, as it has the plate cylinder.
- This inking roller is associated with an anilox roller with a smaller diameter.
- On the inking roller for the color transfer to form a rubber jacket several separate blankets with a hardness of 60 to 80 Shore glued.
- the object of the invention is to improve a short inking unit of the type mentioned in such a way that the print quality reducing influences, in particular vibrations from the channel passage of a cylinder and strip-shaped disturbances of the print quality, are noticeably avoided.
- a first advantage of the invention is that the processing machine is a short inking unit with a relatively small number of rollers, preferably at least one screen roller (anilox roller) with metering system and an inking roller with a compressible roller coating , a noticeably improved behavior compared to the quality occurring in the printing process has diminishing influences.
- a noticeably improved behavior in the entire short inking unit can be achieved.
- these shocks or vibrations excited by the passage through the duct are perceptibly reduced despite a relatively small number of rollers and are not transferred further into the printing unit.
- the adverse behavior (the quality-reducing influences, such as shocks and vibrations in the channel passage of a plate / forme cylinder) in previously known short inking units is significantly reduced by the new solution.
- stenciling phenomena defects in which a printing object offset in the printing direction is at least once additionally apparent
- anilox roller and compressible inking roller taking into account the respective outside diameter
- the inking roller with a compressible roller coating has the same or larger outer diameter, relative to a plate / forme cylinder, in order, in particular, to avoid stenciling phenomena impairing the quality.
- the anilox roller has a smaller or the same outer diameter relative to a plate / forme cylinder.
- a third advantage is that at least the inking roller with a compressible roller coating in a preferred embodiment has a roller core which has a high axial elastic modulus, is relatively rigid and has a relatively low mass.
- the anilox roller having a metallic or ceramic surface may also have a roll core which is analogous to the compressible inking roller.
- the plate / forme cylinder can also have an analogue roller core. The roller core of the anilox roller and that of the plate / forme cylinder also have a high axial elastic modulus, are relatively rigid and have a relatively low mass.
- a fourth advantage is that the inking roller can be tempered with a compressible roller coating and / or the anilox roller and, if required, further rollers or cylinders, so that the temperature level required for processing the respective ink can be ensured in the short inking unit.
- the inking roller and, if necessary, the anilox roller each have at least one tempering device arranged in their roller core.
- the rollers or cylinders can be assigned from the outside, on the surface acting tempering adjacent.
- a fifth advantage results from the fact that the processing machine is not limited to a single short inking unit. Rather, the processing machine a plurality of printing units, in particular in a row construction, having at least one short inking unit with at least one inking roller with a compressible roller coating.
- Anilox rollers with invariable wells, cells or grooves can be used in the metering systems. For example, in at least two printing units with short inking units anilox rollers with unchangeable cells, cells or grooves are arranged. These anilox rollers can have wells, cells or grooves with the same or different pumping volumes.
- the first short inking unit in the conveying direction of the printing material has an anilox roller with a lower priming volume
- the second short inking unit has an anilox roller with a higher priming volume (or vice versa).
- at least one such anilox roller can have changeable cells or cells and thus, as required, changing scoop volumes, such as, for example DE 3938449 C2 or DE 4408615 C2 is known.
- Fig. 1 is a short inking unit for a processing machine, especially for a sheet-fed printing press, shown, which is a printing substrate 4 in the conveying direction 3, a standing with the printing cylinder 4 in the region of a printing nip 11 in operative connection blanket cylinder 2 and one with the blanket cylinder 2 in operative connection plates - / Form cylinder 1 includes.
- printing cylinder 4, blanket cylinder 2 and plate / forme cylinder 1 each have cylinder channels 12 for receiving gripper systems or clamping devices.
- a dampening unit 13 with at least one dampening applicator roll is assigned to the plate / forme cylinder 1.
- an anilox roller 6 with näpfchenartigen (cells) or groove-like (Haschuren) recesses on the roller surface upstream, which with a doctor device 7, preferably a chambered doctor blade with a first and second doctor blade 7a, 7b, with connected ink supply 8 is in operative connection.
- the first doctor blade 7a is designed as a negative pressure to the anilox roller 6 working doctor blade and the second doctor blade 7b as positive to the anilox roller 6 employed squeegee.
- the squeegee device 7 is preferably arranged on the side of the anilox roller 6 which conveys the printing material in the conveying direction 3. Alternatively, a vertical to the anilox roller 6 arrangement of the doctor device 7 'realized be.
- the doctor device 7 is not limited to the present embodiment.
- the squeegee device 7 may also comprise a roll squeegee known per se.
- an ink reservoir, at least one ink cartridge, etc., or a manual supply may be present.
- the anilox roller 6 can be connected to a machine drive (main drive with gear train) or preferably to a self-propelled individual drive 9, which is coupled in terms of circuitry to a machine control 10.
- at least one further inking roller can be arranged as a transfer roller (not shown).
- This further inking roller (transfer roller) may be a conventional inking roller with a rubber coating, a blanket cylinder or an inking roller with a compressible roller coating 28. The latter is identical to the inking roller 5, which will be described in more detail.
- two identical inking rollers 5, each with a compressible roller coating 28 in series are assigned directly to the plate / forme cylinder 1 and both are in operative connection with an upstream transfer roller.
- the anilox roller 6 is turned on / off.
- Such Farbzuftragwalze 5 has a core 15 on which concentric at least one polymeric material having or containing roller coating 28 is preferably arranged adherent.
- the roll coating 28 has a greater Shore A hardness in the radial direction to a roll surface 29 of the inking roller 5 leading to the medium to be processed and is elastic. Furthermore, the roll coating 28 in the radial direction to the core 15 has a lower Shore A hardness and is compressible.
- the roller surface 29 in this case has a - with respect to the effective outer diameter of the plate / forme cylinder 1 - at least the same outer diameter.
- the effective diameter of the plate / forme cylinder 1 is through the cylinder outer diameter and the printing form thereon, possibly with a base, defined.
- the roll coating 28 may be adhesively bonded to the core 15 or adhered to a sleeve (sleeve technique) which can be pushed or pulled off the core 15 in the axial direction.
- the respective roller coating 28 is adhesively bonded to the sleeve.
- the roll coating 28 - starting from the roll surface 29 leading to the medium to be processed in the radial direction to the core 15 - has a substantially continuous hardness drop of the Shore A hardness.
- the roll coating 28, starting from the roll surface 29 leading to the medium to be processed in the radial direction to the core 15, has a surface layer 30 enclosing the roll surface 29 of a specific thickness, for example a thickness of ⁇ 50 ⁇ m, and a uniformly high shore -A hardness on.
- This edge layer 30 is then downstream of the further roll coating 28 in the radial direction to the core 15, which has a substantially continuous hardness drop (in the direction of the core 15) of the Shore A hardness.
- the roll coating 28 comprises a lower compressible layer 16 with a low Shore A hardness, which is adhesively bonded to the core 15, and on this layer 16 is (concentrically) an elastic cover layer 17 enclosing the roll surface 29 with respect to the lower layer 16 larger Shore A hardness adherent.
- the inking roller 5 according to Fig. 6 an axis 14 (roll axis) with the associated core 15 (roll core).
- a lower layer 16 of a cellular foam material is arranged concentrically adherent.
- an elastic cover layer 17 of an elastomer (preferably rubber) is arranged concentrically adherent, which is bounded by the rolling surface 29 leading to the medium to be processed.
- All adherent compounds are preferably realized as adhesive bonds or by vulcanization.
- the roll coating 28 itself or the edge layer 30 or the cover layer 17 (with respective roller surface 29) of the inking roller 5 a - with respect to the effective outer diameter of the plate / forme cylinder 1-at least the same outer diameter.
- the roller coating 28, the edge layer 30 and the cover layer 17 (each with roller surface 29) of the inking roller 5 a - with respect to the plate / forme cylinder 1 - have larger outer diameter.
- the anilox roller 6 preferably has - with respect to the plate / forme cylinder 1 - a smaller ( Fig. 1 to 4 ) or the same outer diameter ( Fig. 5 ) on.
- the anilox roller 6 has according to Fig. 7 (Analogous to the inking roller 5) has an axis 14 with an associated core 15.
- a layer 26 is arranged concentrically with a scored roll surface.
- the layer 26 may be formed of a metallic or preferably a ceramic material.
- the layer 26 can be directly ( Fig. 8 ) or indirectly by arrangement of an intermediate layer on the core 15 to be adherent.
- the anilox roller 6 can be arranged adherently on a sleeve which can be pushed or pulled off on the core 15 in the axial direction.
- the core 15 of inking roller 5 and / or anilox roller 6 and / or plate / forme cylinder 1 comprises a metallic material or preferably a fiber composite material made of carbon, each with a high axial elastic modulus.
- the core 15 may be formed as a solid material or as a hollow cylinder.
- each core 15 has an axial modulus of elasticity of 100 to 450 GPa, preferably of a fiber composite material of carbon.
- the core 15 comprises a metal-carbon composite.
- the core 15 may have an area of carbon assigned to the axis 14 and a region of a metal, for example a metal, which is arranged concentrically with the carbon region and assigned to the roll coating 28.
- the metal region may have channels for a temperature control.
- each tempering device 23 has at least one flow channel through which a temperature control medium flows.
- the at least one flow channel is coupled to the supply line 21 and a return line 22 and a Temperierschaufhneungsstrom for the temperature control line side.
- the tempering device 23 may have at least one heating or cooling cartridge.
- Each tempering device 23 is preferably coupled to a control or regulating device and coupled in terms of circuitry to the machine control 10.
- the inking roller 5, the anilox roller 6 and the plate / forme cylinder 1 each have a temperature control according to DE 197 36 339 A1 be assigned. Between the anilox roller 6, inking roller 5 and, if required, plate / forme cylinder 1, it is possible to set a temperature gradient, at least by means of the tempering devices 23, at the printing unit.
- the core 15 as a hollow cylinder may have an inner layer 15a arranged concentrically to the axis 14 and an outer layer 15c arranged concentrically with the inner layer 15a at a distance. Between inner layer 15a and outer layer 15c, an intermediate layer 15b is adherent to these layers 15a; 15c arranged and at least one of these layers 15a to 15c is made of a fiber composite material made of carbon, preferably CFK. Preferably, at least the two layers 15a and 15c are made of such a fiber composite material made of carbon.
- the intermediate layer 15b may be formed from a plurality of spacer elements 15d, which are preferably designed rod-shaped in the direction of the axis 14.
- the tempering device 23 is preferably arranged in the intermediate layer 15b.
- the tempering device 23 by line side and / or circuitry coupled flow channels and / or heating / cooling cartridges be formed, which are arranged integrated in the direction of the axis 14 in the distancing elements 15d.
- Fig. 2 are two identical short inking units with squeegee device 7, ink supply 8, anilox roller 6, inking roller 5 (with compressible roller coating 28), and in each case a plate / forme cylinder 1 and each a blanket cylinder 2 shown, which are in operative connection with a common impression cylinder 4.
- the pressure cylinder leading to the printing substrate 4 has two pressure gaps 11 on the circumference.
- a plurality of such short inking units can be assigned to a common printing cylinder 4.
- a short inking unit which has a squeegee device 7, ink supply 8 (as a color reservoir in the doctor device 7), anilox roller 6, inking roller 5 (with roller coating 28), and a plate / forme cylinder 1 with dampening unit 13 and a blanket cylinder 2.
- the squeegee device 7 has an upwardly open ink chamber as a paint reservoir, which is in operative connection with a first squeegee blade 7a with the adjacent anilox roller 6.
- the inking roller 5 is associated with a subtraction system 18, which is formed from a relatively soft surface in contact with the inking roller 5 and a roll having a relatively hard surface in contact with this roller.
- the subtraction system 18 removes excess ink from the inking roller 5 and conveys it back into the doctor device 7 or the ink reservoir (ink supply 8).
- the subtraction system 18 is used at the same time the evaporation of back-splitting dampening solution by means of the rollers generated frictional heat.
- a short inking unit which has a doctor device 7 (chamber doctor blade with squeegee blades 7a, 7b), ink supply 8, anilox roller 6, inking roller 5 (with compressible layer 16), and a plate / forme cylinder 1 with dampening unit 13 and a blanket cylinder 2.
- the anilox roller 6 is in the direction of rotation after the contact point of anilox roller 6 and inking roller 5 at a distance a first means 19 for generating an air flow, for example, at least a fan or a blower tube with nozzles for the Blas Kunststoffaustritt, arranged on the surface of the anilox roller 6.
- This device 19 preferably extends over the full width of the roll and supports with the use of a dampening unit 13, the reduction of dampening solution on the anilox roller 6. Furthermore, the anilox roller 6 can be assigned an on / off adjustable roller group 20, which evaporates back by means of frictional heat dampening.
- the inking roller 5 may preferably its own means 19 for generating an air flow, for example, at least one fan or a blowpipe with nozzles for the Blas Kunststoffaustritt be assigned to the roll surface 29 directed.
- This device 19 preferably extends over the full width of the roll and supports the reduction of dampening solution on the roller surface leading to the medium 29.
- the device 19 may be zonal controlled, so that the dampening solution guide zonally influenced.
- the dampening unit 13 may be a switchable roller 24; 24 ', which is in contact with the dampening roller and the inking roller 5 if necessary (position 24') or exclusively with the inking roller 5 in contact (position 24).
- the switchable roller 24, 24 ' is assigned a spraying device 25.
- the roller 24 is wetted by cleaning fluid and in contact with the inking roller 5 whose roller surface 29 is cleaned.
- the anilox roller 6 is associated with a spraying device 25 for cleaning the surface.
- Fig. 5 is the short inking unit analogous to Fig. 4 educated.
- a smoothing device 27 for leveling the remaining after a color splitting on the top layer 17 irregular surface topography of the inking roller 5 assigned.
- Each smoothing device 27 extends over the full width of the roll and is in the direction of rotation of the inking roller 5 at the roll surface 29 tangentially, preferably acted upon by a force, employed.
- the smoothing device 27 has no squeegee function but levels the irregular surface topography to a substantially uniform ink layer thickness on the roll surface 29.
- the smoothing device 27 can be driven axially changeable.
- such a smoothing device 27 of the anilox roller 6 in the direction of rotation of this according to the contact point of anilox roller 6 and inking roller 5 be assigned to be adjustable.
- the anilox roller 6 and / or the inking roller 5 is associated with a device 19 for generating an air flow to the respective surface.
- Fig. 9 are the inking roller 5 a first and a second metering system 6,7, 8, each comprising an anilox roller 6, a squeegee device 7 and a paint supply 8, stationarily assigned.
- one of the metering systems 6, 7, 8 can be used by optionally selecting one of the metering systems 6, 7, 8 for ink transfer by means of the anilox roller 6 to the inking roller 5 and that the other of the metering systems 6, 7, 8 for interruption the ink transfer by means of the anilox roller 6 of the inking roller 5 is turned off or abun. (and vice versa).
- a transfer roller is used, the on / off of the anilox roller 6 takes place on the transfer roller. This allows a fast color change can be realized.
- each anilox roller 6 can be coupled separately with one individual drive 9 each.
- a single, ie common single drive 9 for driving each anilox roller 6 can be coupled to both anilox rollers 6 and can optionally feed a moment to the anilox roller 6 to be driven.
- the / the individual drives 9 are coupled to the machine control 10 circuit and data technology.
- Fig. 10 is the inking roller 5, at least one anilox roller 6 and a squeegee device 7 (with or without ink supply 8) comprehensive dosing Assigned 6, 7, 8 and this dosing system 6, 7, 8 is arranged as an assembly location variable.
- the dosing system 6, 7, 8 be accommodated in side walls and is moved or pivoted or removed as a complete assembly and can be replaced with a second dosing system 6, 7, 8.
- at least one anilox roller 6 and a squeegee device 7 of the dosing system 6, 7, 8 against another, with the inking roller 5 operatively engageable (on / Ab monoes) dosing system 6, 7, 8 be interchangeable.
- the anilox roller 6 and the squeegee device 7 can be configured to be variable in position in order to carry out cleaning operations outside the printing operation.
- a second screen roller 6 and a second squeegee device 7 or a complete second module with the inking roller 5 are brought into operative connection to realize the printing operation.
- the first anilox roller 6 and the first doctor device 7 or the first complete module can be cleaned or converted.
- the anilox rollers 6 of the metering systems 6, 7, 8 may have different pumping volumes of the wells, cells, grooves.
- the processing machine is not limited to the existence of such a short inking unit. Rather, the processing machine may comprise at least one further, preferably identical short inking unit. In this case, the metering systems 6, 7, 8 may be the same or deviating from each other.
- An anilox roller 6 of the first short inking unit may have an anilox roller 6 of a second short inking unit different from each other Schöpfvolumina the wells.
- the surfaces of the inking rollers 5 may have the same or different surface roughnesses with each other and with the surfaces of the blankets on the blanket cylinders 2. This additionally influences the color flow, the color density and / or the color quantity.
- the roller surface 29 of the inking roller 5 may have a greater roughness than the surface of the blanket on the blanket cylinder 2.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
Die Erfindung betrifft eine Druckmaschine mit einem Kurzfarbwerk nach dem Oberbegriff von Anspruch 1. Derartige Kurzfarbwerke sind vorzugsweise in Druck- und/oder Lackiermaschinen einsetzbar.The invention relates to a printing machine with a short inking unit according to the preamble of
Kurzfarbwerke nach dem Anilox-Prinzip sind dadurch charakterisiert, dass diese Farbwalzenanordnungen und eine farbzonenfreie Farbzufuhr, speziell ohne Farbzonenschrauben, aufweisen, die eine gleichmäßige Einfärbung der Druckform garantieren. Dabei wird eine Farbe von bevorzugt niedrigerer Viskosität als bei konventionellen Farbwerken eingesetzt.Short inking units according to the anilox principle are characterized in that these ink roller assemblies and a color ink free ink supply, especially without ink fountain keys, have that guarantee a uniform coloring of the printing plate. In this case, a color of preferably lower viscosity than conventional inking units is used.
Ein Kurzfarbwerk dieser Art ist aus
Aus
Gemäß
Weiterhin ist aus
Aus
Aus
Aufgabe der Erfindung ist es, ein Kurzfarbwerk der eingangs genannten Art derart zu verbessern, dass die die Druckqualität mindernde Einflüsse, insbesondere Schwingungen aus dem Kanaldurchlauf eines Zylinders sowie streifenförmige Störungen der Druckqualität, spürbar vermieden werden.The object of the invention is to improve a short inking unit of the type mentioned in such a way that the print quality reducing influences, in particular vibrations from the channel passage of a cylinder and strip-shaped disturbances of the print quality, are noticeably avoided.
Gelöst wird die Aufgabe durch die Ausbildungsmerkmale von Anspruch 1. Weiterbildungen ergeben sich aus den abhängigen Ansprüchen.The problem is solved by the training features of
Ein erster Vorteil der Erfindung ist darin begründet, dass die Verarbeitungsmaschine ein Kurzfarbwerk mit einer relativ geringen Walzenanzahl, bevorzugt zumindest mit einer Rasterwalze (Aniloxwalze) mit Dosiersystem sowie einer Farbauftragwalze mit einer kompressiblen Walzenbeschichtung, ein spürbar verbessertes Verhalten gegenüber den im Druckprozess auftretenden, die Qualität mindernden Einflüssen aufweist. So ist insbesondere beim Passieren eines Zylinderkanals des Platten-/Formzylinders (Kanaldurchlauf) und den daraus resultierenden Stößen und Schwingungen ein verbessertes Dämpfungsverhalten im gesamten Kurzfarbwerk erzielbar. In vorteilhafter Weise werden diese durch den Kanaldurchlauf erregten Stöße bzw. Schwingungen trotz einer relativ geringen Walzenanzahl spürbar reduziert und nicht weiter in das Druckwerk übertragen. Das nachteilige Verhalten (die Qualität mindernden Einflüsse, wie Stöße und Schwingungen beim Kanaldurchlauf eines Platten-/Formzylinders) bei bisher bekannten Kurzfarbwerken ist durch die neue Lösung spürbar reduziert.A first advantage of the invention is that the processing machine is a short inking unit with a relatively small number of rollers, preferably at least one screen roller (anilox roller) with metering system and an inking roller with a compressible roller coating , a noticeably improved behavior compared to the quality occurring in the printing process has diminishing influences. Thus, in particular when passing a cylinder channel of the plate / forme cylinder (channel passage) and the resulting shocks and vibrations, an improved damping behavior in the entire short inking unit can be achieved. In an advantageous manner, these shocks or vibrations excited by the passage through the duct are perceptibly reduced despite a relatively small number of rollers and are not transferred further into the printing unit. The adverse behavior (the quality-reducing influences, such as shocks and vibrations in the channel passage of a plate / forme cylinder) in previously known short inking units is significantly reduced by the new solution.
Weiterhin sind Schabloniererscheinungen (Fehlerscheinungen, bei denen sich ein Drucksujet in Druckrichtung versetzt wenigstens einmal zusätzlich abzeichnet) durch die Kombination von Rasterwalze und kompressibler Farbauftragwalze unter Berücksichtigung der jeweiligen Außendurchmesser vermeidbar.Furthermore, stenciling phenomena (defects in which a printing object offset in the printing direction is at least once additionally apparent) can be avoided by the combination of anilox roller and compressible inking roller taking into account the respective outside diameter.
Als zweiter Vorteil kann angeführt werden, dass die Farbauftragwalze mit einer kompressiblen Walzenbeschichtung einen - bezogen auf einen Platten-/ Formzylinder - gleichen oder größeren Außendurchmesser aufweist, um insbesondere die Qualität beeinträchtigenden Schabloniererscheinungen zu vermeiden.As a second advantage, it can be stated that the inking roller with a compressible roller coating has the same or larger outer diameter, relative to a plate / forme cylinder, in order, in particular, to avoid stenciling phenomena impairing the quality.
In vorteilhafter Weise weist unter diesem Aspekt die Rasterwalze einen - bezogen auf einen Platten-/Formzylinder - kleineren oder gleichen Außendurchmesser auf.Advantageously, in this aspect, the anilox roller has a smaller or the same outer diameter relative to a plate / forme cylinder.
Ein dritter Vorteil besteht darin, dass zumindest die Farbauftragwalze mit einer kompressiblen Walzenbeschichtung in bevorzugter Ausbildung einen Walzenkern aufweist, der einen hohen axialen Elastizitätsmodul besitzt, relativ biegesteif ist und eine relativ geringe Masse aufweist. Dadurch wird auch bei großen Formatbreiten zumindest durch diese spezielle Farbauftragwalze jeweils ein die Druckqualität verbessernder, gleichmäßiger Walzenstreifen zur vorgeordneten Rasterwalze (alternativ zu einer vorgeordneten Übertragwalze) und zum nachgeordneten Platten-/Formzylinder gewährleistet. In vorteilhafter Weise kann auch die eine metallische oder keramische Oberfläche aufweisende Rasterwalze einen zur kompressiblen Farbauftragwalze analogen Walzenkern aufweisen. In einer weiteren Ausbildung kann auch der Platten-/Formzylinder einen analogen Walzenkern aufweisen. Der Walzenkern der Rasterwalze und der des Platten-/Formzylinders besitzen ebenfalls einen hohen axialen Elastizitätsmodul, sind relativ biegesteif und weisen eine relativ geringe Masse auf.A third advantage is that at least the inking roller with a compressible roller coating in a preferred embodiment has a roller core which has a high axial elastic modulus, is relatively rigid and has a relatively low mass. As a result, even with large format widths at least by this special inking roller in each case a print quality improving, uniform roll strip to the upstream anilox roller (alternatively to a upstream transfer roller) and the downstream plate / forme cylinder guaranteed. In an advantageous manner, the anilox roller having a metallic or ceramic surface may also have a roll core which is analogous to the compressible inking roller. In a further embodiment, the plate / forme cylinder can also have an analogue roller core. The roller core of the anilox roller and that of the plate / forme cylinder also have a high axial elastic modulus, are relatively rigid and have a relatively low mass.
Als vierter Vorteil ist zu nennen, dass die Farbauftragwalze mit einer kompressiblen Walzenbeschichtung und/oder die Rasterwalze und bei Bedarf weitere Walzen bzw. Zylinder temperierbar sind, so dass das für die Verarbeitung des jeweiligen Farbe erforderliche Temperaturniveau im Kurzfarbwerk gewährleistet werden kann. Hierzu weisen insbesondere die Farbauftragwalze und bei Bedarf die Rasterwalze jeweils wenigstens eine in ihrem Walzenkern angeordnete Temperiereinrichtung auf. Mittels eines einstellbaren Temperaturniveaus sowie einer einzelmotorisch, d.h. drehzahlregelbarer, angetriebenen Rasterwalze lässt sich u. a. die notwendige Farbmenge an den jeweiligen Druckauftrag anpassen. Alternativ können den Walzen bzw. Zylindern von außen, auf deren Oberfläche wirkende Temperiereinrichtungen benachbart zugeordnet sein.A fourth advantage is that the inking roller can be tempered with a compressible roller coating and / or the anilox roller and, if required, further rollers or cylinders, so that the temperature level required for processing the respective ink can be ensured in the short inking unit. For this purpose, in particular the inking roller and, if necessary, the anilox roller each have at least one tempering device arranged in their roller core. By means of an adjustable temperature level as well as a single motor, i. speed adjustable, driven anilox roller can u. a. adjust the required amount of ink to the respective print job. Alternatively, the rollers or cylinders can be assigned from the outside, on the surface acting tempering adjacent.
Ein fünfter Vorteil resultiert daraus, dass die Verarbeitungsmaschine nicht auf ein einzelnes Kurzfarbwerk beschränkt ist. Vielmehr kann die Verarbeitungsmaschine mehrere Druckwerke, insbesondere in Reihenbauweise, aufweisen, die zumindest ein Kurzfarbwerk mit wenigstens einer Farbauftragwalze mit einer kompressiblen Walzenbeschichtung aufweisen.
In den Dosiersystemen können Rasterwalzen mit unveränderbaren Näpfchen, Zellen bzw. Rillen eingesetzt sein. Beispielsweise sind in wenigstens zwei Druckwerken mit Kurzfarbwerken Rasterwalzen mit unveränderbaren Näpfchen, Zellen bzw. Rillen angeordnet. Diese Rasterwalzen können Näpfchen, Zellen bzw. Rillen mit gleichen oder abweichenden Schöpfvolumen aufweisen. Beispielsweise weist das in Förderrichtung des Bedruckstoffs erste Kurzfarbwerk eine Rasterwalze mit geringerem Schöpfvolumen auf und das zweite Kurzfarbwerk weist eine Rasterwalze mit höherem Schöpfvolumen auf (oder auch umgekehrt). Alternativ kann wenigstens eine derartige Rasterwalze veränderbare Näpfchen bzw. Zellen und somit je nach Bedarf wechselnde Schöpfvolumina aufweisen, wie dies beispielsweise aus
Anilox rollers with invariable wells, cells or grooves can be used in the metering systems. For example, in at least two printing units with short inking units anilox rollers with unchangeable cells, cells or grooves are arranged. These anilox rollers can have wells, cells or grooves with the same or different pumping volumes. For example, the first short inking unit in the conveying direction of the printing material has an anilox roller with a lower priming volume, and the second short inking unit has an anilox roller with a higher priming volume (or vice versa). Alternatively, at least one such anilox roller can have changeable cells or cells and thus, as required, changing scoop volumes, such as, for example
Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden. Dabei zeigen schematisch:
- Fig. 1
- ein Kurzfarbwerk in erster Ausbildung in einem Druckwerk,
- Fig. 2
- zwei Kurzfarbwerke in einem Druckwerk,
- Fig. 3
- eine zweite Ausbildung des Kurzfarbwerks,
- Fig. 4
- eine dritte Ausbildung des Kurzfarbwerks,
- Fig. 5
- eine vierte Ausbildung des Kurzfarbwerks,
- Fig. 6
- eine Farbauftragwalze erster Bauart im Querschnitt,
- Fig. 7
- eine Rasterwalze im Querschnitt,
- Fig. 8
- eine Detaildarstellung eines Walzenkerns,
- Fig. 9
- ein Kurzfarbwerk mit zwei wahlweise einsetzbaren Dosiersystemen,
- Fig. 10
- ein Kurzfarbwerk mit einem ortsveränderbaren Dosiersystem,
- Fig. 11
- eine Farbauftragwalze zweiter Bauart im Querschnitt,
- Fig. 12
- eine Farbauftragwalze dritter Bauart im Querschnitt.
- Fig. 1
- a short inking unit in the first training in a printing unit,
- Fig. 2
- two short inking units in one printing unit,
- Fig. 3
- a second embodiment of the short inking unit,
- Fig. 4
- a third embodiment of the short inking unit,
- Fig. 5
- a fourth embodiment of the short inking unit,
- Fig. 6
- an inking roller of the first type in cross-section,
- Fig. 7
- an anilox roll in cross section,
- Fig. 8
- a detailed representation of a roll core,
- Fig. 9
- a short inking unit with two optional dosing systems,
- Fig. 10
- a short inking unit with a portable dosing system,
- Fig. 11
- an inking roller of the second type in cross-section,
- Fig. 12
- an inking roller third type in cross section.
In
In Farbflussrichtung ist dem Platten-/Formzylinder 1 unmittelbar eine Farbauftragwalze 5 vorgeordnet und der Farbauftragwalze 5 wiederum ist eine Rasterwalze 6 mit näpfchenartigen (Zellen) oder rillenartigen (Haschuren) Vertiefungen an der Walzenoberfläche vorgeordnet, welche mit einer Rakeleinrichtung 7, vorzugsweise einem Kammerrakel mit einem ersten und zweiten Rakelblatt 7a, 7b, mit angeschlossener Farbversorgung 8 in Wirkverbindung ist. Im vorliegenden Beispiel ist das erste Rakelblatt 7a als negativ an die Rasterwalze 6 angestelltes Arbeitsrakel und das zweite Rakelblatt 7b als positiv an die Rasterwalze 6 angestelltes Schließrakel ausgeführt. Die Rakeleinrichtung 7 ist vorzugsweise an der in Förderrichtung 3 den Bedruckstoff abfördernden Seite der Rasterwalze 6 angeordnet. Alternativ ist eine zur Rasterwalze 6 vertikale Anordnung der Rakeleinrichtung 7' realisiert sein. Dabei ist die Rakeleinrichtung 7 nicht auf die vorliegende Ausführung beschränkt. Beispielsweise kann die Rakeleinrichtung 7 auch ein an sich bekanntes Rollrakel umfassen.In the color flow direction of the plate /
Als Farbversorgung 8 (8') kann ein Farbvorratsbehälter, wenigstens eine Farbkartusche etc., oder eine manuelle Versorgung vorhanden sein.
Weiterhin kann die Rasterwalze 6 mit einem Maschinenantrieb (Hauptantrieb mit Räderzug) oder vorzugsweise mit einem eigenmotorisch antreibbaren Einzelantrieb 9 verbunden sein, der schaltungstechnisch mit einer Maschinensteuerung 10 gekoppelt ist. Dabei kann zwischen der unmittelbar dem Platten-/Formzylinder 1 zugeordneten Farbauftragwalze 5 und der Rasterwalze 6 wenigstens eine weitere Farbwerkswalze als Übertragwalze angeordnet sein (nicht gezeigt). Diese weitere Farbwerkswalze (Übertragwalze) kann eine herkömmliche Farbwerkswalze mit einer Gummibeschichtung, ein Gummituchzylinder oder eine Farbwerkswalze mit einer kompressiblen Walzenbeschichtung 28 sein. Letztere ist baugleich zur Farbauftragwalze 5, welche noch eingehender beschrieben wird. D.h. bei letzterer Ausbildung sind zwei baugleiche Farbwerkswalzen 5 mit je einer kompressiblen Walzenbeschichtung 28 in Reihe (eine als Übertragwalze und eine als Farbauftragwalze 5) angeordnet in einem Kurzfarbwerk einsetzbar. Alternativ sind zwei derartige Farbauftragwalzen 5 unmittelbar dem Platten-/Formzylinder 1 zugeordnet und beide sind mit einer vorgeordneten Übertragwalze in Wirkverbindung. An die Übertragwalze ist dann die Rasterwalze 6 an-/abstellbar.As a paint supply 8 (8 '), an ink reservoir, at least one ink cartridge, etc., or a manual supply may be present.
Furthermore, the
Eine derartige Farbäuftragwalze 5 weist einen Kern 15 auf, auf dem konzentrisch eine zumindest ein polymeres Material aufweisende oder enthaltende Walzenbeschichtung 28 bevorzugt haftfest angeordnet ist. Die Walzenbeschichtung 28 weist in radialer Richtung zu einer das zu verarbeitende Medium führenden Walzenoberfläche 29 der Farbauftragwalze 5 eine größere Shore-A Härte auf und ist elastisch. Weiterhin weist die Walzenbeschichtung 28 in radialer Richtung zum Kern 15 eine geringere Shore-A Härte auf und ist kompressibel. Die Walzenoberfläche 29 weist dabei einen - mit Bezug zum wirksamen Außendurchmesser des Platten-/Formzylinders 1 - zumindest gleichen Außendurchmesser auf. Der wirksame Durchmesser des Platten-/Formzylinders 1 ist durch den Zylinderaußendurchmesser und die darauf befindliche Druckform, ggf. mit Unterlage, definiert. Die Walzenbeschichtung 28 kann haftfest auf dem Kern 15 oder haftfest auf einer auf den Kern 15 in axialer Richtung aufschiebbaren oder abziehbaren Hülse (Sleeve-Technik) angeordnet sein. Die jeweilige Walzenbeschichtung 28 ist mit der Hülse haftfest verbunden.
In einer bevorzugten Ausbildung weist die Walzenbeschichtung 28 - ausgehend von der das zu verarbeitende Medium führenden Walzenoberfläche 29 in radialer Richtung zum Kern 15 - einen im Wesentlichen kontinuierlichen Härteabfall der Shore-A Härte auf.In a preferred embodiment, the roll coating 28 - starting from the
In einer weiteren Ausbildung weist die Walzenbeschichtung 28 - ausgehend von der das zu verarbeitende Medium führenden Walzenoberfläche 29 in radialer Richtung zum Kern 15 - eine die Walzenoberfläche 29 einschließende Randschicht 30 von einer bestimmten Dicke, beispielsweise einer Dicke von ≤ 50 µm, und einheitlich hoher Shore-A Härte auf. Dieser Randschicht 30 ist anschließend in radialer Richtung zum Kern 15 die weitere Walzenbeschichtung 28 nachgeordnet, welche einen im Wesentlichen kontinuierlichen Härteabfall (in Richtung Kern 15) der Shore-A Härte aufweist.In a further embodiment, the
In einer Ausbildung umfasst die Walzenbeschichtung 28 eine untere, auf dem Kern 15 haftfest angeordnete kompressible Schicht 16 mit einer geringen Shore-A Härte und auf dieser Schicht 16 ist (konzentrisch) eine die Walzenoberfläche 29 einschließende, elastische Deckschicht 17 mit gegenüber der unteren Schicht 16 größeren Shore-A Härte haftfest angeordnet.In one embodiment, the
In einer Weiterbildung weist die Farbauftragwalze 5 gemäß
Sämtliche haftfesten Verbindungen sind vorzugsweise als Klebeverbindungen oder durch Vulkanisation realisierbar.All adherent compounds are preferably realized as adhesive bonds or by vulcanization.
Dabei weist die Walzenbeschichtung 28 für sich oder die Randschicht 30 oder die Deckschicht 17 (mit jeweiliger Walzenoberfläche 29) der Farbauftragwalze 5 einen - mit Bezug zum wirksamen Außendurchmesser des Platten-/ Formzylinders 1-zumindest gleichen Außendurchmesser auf. In einer weiteren Ausbildung kann die Walzenbeschichtung 28, die Randschicht 30 bzw. die Deckschicht 17 (jeweils mit Walzenoberfläche 29) der Farbauftragwalze 5 einen - mit Bezug zum Platten-/Formzylinder 1 - größeren Außendurchmesser aufweisen.
Die Rasterwalze 6 weist bevorzugt - mit Bezug zum Platten-/Formzylinder 1 - einen kleineren (
The
Die Rasterwalze 6 weist gemäß
Der Kern 15 von Farbauftragwalze 5 und/oder Rasterwalze 6 und/oder Platten-/Formzylinder 1 umfasst einen metallischen Werkstoff oder bevorzugt einen Faserverbundwerkstoff aus Karbon, jeweils mit einem hohen axialen Elastizitätsmodul. Dabei kann der Kern 15 als Vollmaterial oder als Hohlzylinder ausgebildet sein. Bevorzugt weist jeder Kern 15 einen axialen Elastizitätsmodul von 100 bis 450 GPa auf, vorzugsweise aus einem Faserverbundwerkstoff aus Karbon. In einer weiteren Ausbildung umfasst der Kern 15 einen Metall-Karbon-Verbund. Beispielsweise kann der Kern 15 einen der Achse 14 zugeordneten Bereich aus Karbon und einen konzentrisch zum Karbonbereich angeordneten, der Walzenbeschichtung 28 zugeordneten Bereich aus einem Metall, z. B. Aluminium, aufweisen. Weiterhin kann der Metallbereich Kanäle für ein Temperiermittel aufweisen.The
Weiterhin umfasst der jeweilige Kern 15 von Farbauftragwalze 5 und/oder Rasterwalze 6 und/oder Platten-/Formzylinder 1 gemäß
Zwischen Rasterwalze 6, Farbauftragwalze 5 und bei Bedarf Platten-/Formzylinder 1 kann Druckwerks bezogen zumindest durch die Temperiereinrichtungen 23 ein Temperaturgefälle eingestellt werden.Furthermore, the
Between the
Der Kern 15 als Hohlzylinder kann eine konzentrisch zur Achse 14 angeordnete Innenschicht 15a und eine zur Innenschicht 15a in einem Abstand konzentrisch angeordnete Außenschicht 15c auf weisen. Zwischen Innenschicht 15a und Außenschicht 15c ist eine Zwischenschicht 15b haftfest mit diesen Schichten 15a; 15c verbunden angeordnet und wenigstens eine dieser Schichten 15a bis 15 c ist aus einem Faserverbundwerkstoff aus Karbon, vorzugsweise CFK, gebildet. Bevorzugt sind zumindest die beiden Schichten 15a und 15c aus einem derartigen Faserverbundwerkstoff aus Karbon ausgeführt. Die Zwischenschicht 15b kann aus einer Mehrzahl von Distanzelementen 15d gebildet sein, welche bevorzugt in Richtung der Achse 14 stabförmig ausgebildet sein.The core 15 as a hollow cylinder may have an inner layer 15a arranged concentrically to the
Bevorzugt ist die Temperiereinrichtung 23 in der Zwischenschicht 15b angeordnet. In einer Weiterbildung kann die Temperiereinrichtung 23 durch leitungsseitig und/oder schaltungstechnisch gekoppelte Strömungskanäle und/oder Heiz/Kühlpatronen gebildet sein, welche in Richtung der Achse 14 in die Distänzelemente 15d integriert angeordnet sind.The tempering
Gemäß
In einer Weiterbildung können mehrere derartiger Kurzfarbwerke einem gemeinsamen Druckzylinder 4 zugeordnet sein.According to
In a further development, a plurality of such short inking units can be assigned to a
Gemäß
Gemäß
Der Farbauftragwalze 5 kann bevorzugt eine eigene Einrichtung 19 zur Erzeugung eines Luftstromes, beispielsweise wenigstens ein Lüfter oder ein Blasrohr mit Düsen für den Blasluftaustritt, auf deren Walzenoberfläche 29 gerichtet zugeordnet sein. Diese Einrichtung 19 erstreckt sich bevorzugt über die volle Walzenbreite und unterstützt die Reduzierung von Feuchtmittel auf der das Medium führenden Walzenoberfläche 29. In einer Ausbildung kann die Einrichtung 19 zonal gesteuert sein, so dass die Feuchtmittelführung zonal beeinflussbar ist.
Das Feuchtwerk 13 kann eine schaltbare Walze 24; 24' aufweisen, die bei Bedarf mit der Feuchtauftragwalze und der Farbauftragwalze 5 in Kontakt ist (Position 24') oder ausschließlich mit der Farbauftragwalze 5 in Kontakt ist (Position 24). Zwecks Reinigung der Walzenoberfläche 29 der Farbauftragwalze 5 ist der schaltbaren Walze 24, 24' eine Sprüheinrichtung 25 zugeordnet. Die Walze 24 wird mittels Reinigungsfluid benetzt und in Kontakt mit der Farbauftragwalze 5 wird deren Walzenoberfläche 29 gereinigt.
Bevorzugt ist der Rasterwalze 6 eine Sprüheinrichtung 25 zum Reinigen der Oberfläche zugeordnet.The inking
The dampening
Preferably, the
Gemäß
Bei Bedarf kann eine derartige Glätteinrichtung 27 der Rasterwalze 6 in Drehrichtung dieser nach der Kontaktstelle von Rasterwalze 6 und Farbauftragwalze 5 anstellbar zugeordnet sein. Bevorzugt ist der Rasterwalze 6 und / oder der Farbauftragwalze 5 eine Einrichtung 19 zur Erzeugung eines Luftstromes auf die jeweilige Oberfläche zugeordnet.If necessary, such a
Gemäß
Gemäß
Die Verarbeitungsmaschine ist nicht auf das Vorhandensein eines derartigen Kurzfarbwerks beschränkt. Vielmehr kann die Verarbeitungsmaschine zumindest ein weiteres, bevorzugt baugleiches Kurzfarbwerk umfassen. Dabei können die Dosiersysteme 6, 7, 8 gleich ausgebildet oder abweichend voneinander ausgebildet sein. Die eine Rasterwalze 6 des ersten Kurzfarbwerks kann zu einer Rasterwalze 6 eines zweiten Kurzfarbwerks voneinander abweichende Schöpfvolumina der Näpfchen aufweisen.The processing machine is not limited to the existence of such a short inking unit. Rather, the processing machine may comprise at least one further, preferably identical short inking unit. In this case, the
Die Oberflächen der Farbauftragwalzen 5 (Walzenoberflächen 29) können untereinander sowie zu den Oberflächen der Gummitücher auf den Gummituchzylindern 2 gleiche oder abweichende Oberflächenrauhigkeiten aufweisen. Dadurch kann zusätzlich der Farbfluss, die Farbdichte und/oder die Farbmenge beeinflusst werden. Beispielsweise kann in einem Kurzfarbwerk die Walzenoberfläche 29 der Farbauftragwalze 5 eine größere Rauhigkeit aufweisen als die Oberfläche des Gummituches auf dem Gummituchzylinder 2.The surfaces of the inking rollers 5 (roller surfaces 29) may have the same or different surface roughnesses with each other and with the surfaces of the blankets on the
- 01 -01 -
- Platten-/FormzylinderPlate / form cylinder
- 02 -02 -
- GummituchzylinderBlanket cylinder
- 03 -03 -
- Förderrichtungconveying direction
- 04 -04 -
- Druckzylinderpressure cylinder
- 05 -05 -
- FarbauftragwalzeInking roller
- 06 -06 -
- Rasterwalzeanilox roller
- 07 -07 -
- Rakeleinrichtungdoctor device
- 07a -07a -
- erstes Rakelblattfirst doctor blade
- 07b -07b -
- zweites Rakelblattsecond squeegee blade
- 08 -08 -
- Farbversorgungpaint supply
- 09 -09 -
- Einzelantrieb (Rasterwalze)Single drive (anilox roller)
- 10 -10 -
- Maschinensteuerungmachine control
- 11 -11 -
- Druckspaltnip
- 12 -12 -
- Zylinderkanalcylinder gap
- 13 -13 -
- Feuchtwerkdampening
- 14 -14 -
- Achseaxis
- 15 -15 -
- Kerncore
- 15a -15a -
- Innenschichtinner layer
- 15b -15b -
- Zwischenschichtinterlayer
- 15c -15c -
- Außenschichtouter layer
- 15d -15d -
- Distanzelementspacer
- 16 -16 -
- untere SchichtLower class
- 17 -17 -
- Deckschichttopcoat
- 18 -18 -
- Subtraktionssystemsubtraction system
- 19 -19 -
- Einrichtung (zur Erzeugung eines Luftstromes)Device (for generating an airflow)
- 20 -20 -
- Walzengrupperoll group
- 21 -21 -
- Zuführleitungfeed
- 22 -22 -
- RücklaufleitungReturn line
- 23 -23 -
- Temperiereinrichtungtempering
- 24 -24 -
- schaltbare Walzeswitchable roller
- 25 -25 -
- Sprüheinrichtungspraying
- 26 -26 -
- Schichtlayer
- 27 -27 -
- Glätteinrichtungsmoothing
- 28 -28 -
- Walzenbeschichtungroll coating
- 29 -29 -
- Walzenoberflächeroll surface
- 30 -30 -
- Randschichtboundary layer
Claims (26)
- A printing press with a short inking unit with a screen roller (6) and an associated doctor device (7, 7a, 7b) and an ink application roller (5) arranged downstream of the screen roller (6), wherein the ink application roller (5) is in operational connection in ink flowing direction with a plate/forme cylinder (1) arranged directly downstream and a blanket cylinder (2) is arranged downstream of the plate/forme cylinder (1),
wherein the roller surface (29) of the ink application roller (5), with reference to the effective outer diameter of the plate/forme cylinder (1), has at least a same outer diameter,
characterized in that
the ink application roller (5) comprises a core (15) on which concentrically a roller coating (28) at least comprising or containing a polymer material is arranged,
and wherein the roller coating (28) in radial direction adjacent to a roller surface (29) guiding the medium to be processed has a greater shore-A hardness and is elastic and in radial direction with respect to the core (15) has a lower shore-A hardness and is compressible. - The printing press according to Claim 1,
characterized in that
the roller coating (28) is arranged in a highly adhesive manner on the core (15) or in a highly adhesive manner on a sleeve that can be slid on to or pulled off the core (15) in axial direction. - The printing press according to Claim 1,
characterized in that
the roller coating (28) comprises a lower layer (16) highly adhesively arranged on the core (15) with a low shore-A hardness and in that on this layer (16) an elastic covering layer (17) guiding the medium to be processed on the roller surface (29) is highly adhesively arranged with a shore-A hardness that is greater relative to the lower layer (16). - The printing press according to Claim 3,
characterized in that
the lower layer (16) is formed of a cellular foam material. - The printing press according to Claim 1,
characterized in that
the roller coating (28) - starting out from the roller surface (29) guiding the medium to be processed in radial direction to the core (15) - has a substantially drop in hardness of the shore-A hardness. - The printing press according to Claim 1,
characterized in that
starting out from the roller surface (29) guiding the medium to be processed in radial direction to the core (15) a marginal layer (30) enclosing the roller surface (29) is arranged, the marginal layer (30) having a certain thickness and uniformly high shore-A hardness and in that subsequently the further roller coating (28) is arranged, which in the direction of the core (15) has a substantially continuous drop in hardness of the shore-A hardness. - The printing press according to Claim 1,
characterized in that
the roller surface (29) of the ink application roller (5) has a - with respect to the plate/forme cylinder (1) - larger outer diameter. - The printing press according to Claim 1,
characterized in that
the screen roller (6) has - with respect to the plate/forme cylinder (1) - smaller or same outer diameter. - The printing press according to Claim 1,
characterized in that
the screen roller (6) comprises a core (15) with a high axial modulus of elasticity of 100 to 450 GPa. - The printing press according to Claim 1,
characterized in that
the ink application roller (5) comprises a core (15) with a high axial modulus of elasticity of 100 to 450 GPa. - The printing press according to Claim 1,
characterized in that
the plate/forme cylinder (1) comprises a core (15) with a high axial modulus of elasticity of 100 to 450 GPa. - The printing press according to Claim 1 and 9 or 10 or 11,
characterized in that
the core (15) comprises a composite fibre material of carbon or metal-carbon composite. - The printing press according to Claim 1 and 9 or 10 or 11,
characterized in that
the core (15) comprises a temperature control device (23). - The printing press according to Claim 13,
characterized in that
the temperature control device (23) comprises at least one flow channel through which a temperature control medium can flow. - The printing press according to Claim 13,
characterized in that
the temperature control device (23) comprises at least one heating or cooling cartridge. - The printing press according to Claim 12,
characterized in that
the core (15) has an inner layer (15a) that is arranged concentrically to the axis (14) and an outer layer (15c) which is arranged concentrically spaced from the inner layer (15a), in that between inner layer (15a) and outer layer (15c) an intermediate layer (15b) is arranged connected to these layers (15a; 15c) in a highly adhesive manner and at least one of these layers (15a to 15c) is formed of a composite fibre material of carbon. - The printing press according to Claims 13 and 16,
characterized in that
the temperature control device (23) is arranged in the intermediate layer (15b). - The printing press according to Claim 1,
characterized in that
after the contact point of screen roller (6) and ink application roller (5) in the direction of rotation of the screen roller (6) the latter, at a distance, is assigned a device (19) for generating an air stream onto the surface of the screen roller (6). - The printing press according to Claim 1,
characterized in that
after the contact point of screen roller (6) and ink application roller (5) in the direction of rotation of the screen roller (6) the latter is assigned a smoothing device (27) for levelling the surface topography remaining on the screen roller (6). - The printing press according to Claim 1,
characterized in that
after the contact point of ink application roller (5) and plate/forme cylinder (1) in the direction of the ink application roller (5) the latter, at a distance, is assigned a device (19) for generating an air stream onto the surface of the ink application roller (5). - The printing press according to Claim 1,
characterized in that
before and/or after the contact point of ink application roller (5) and plate/forme cylinder (1) in the direction of rotation of the ink application roller (5) the latter is assigned a smoothing device (27) for levelling the surface topography that remains on the ink application roller (5). - The printing press according to Claim 1,
characterized in that
the ink application roller (5) is assigned a first and a second metering system (6, 7, 8), each comprising a screen roller (6), a doctor device (7) and an ink supply (8),
in that optionally the one of the metering systems (6, 7, 8) can be engaged with the ink application roller (5) or the ink transfer by means of the screen roller (6) and in that the other one of the metering systems (6, 7, 8) can be disengaged from the ink application roller (5) for interrupting the ink transfer by means of the screen roller (6). - The printing press according to Claim 1,
characterized in that
the ink application roller (5) is assigned a metering system (6, 7, 8) comprising at least one screen roller (6) and a doctor device (7) and this metering system (6, 7, 8) is arranged locationally variably as an assembly. - The printing press according to Claim 23,
characterized in that
the metering system (6, 7, 8) comprising at least one screen roller (6) and a doctor device (7) is interchangeable with a further metering system (6, 7, 8) that can be brought into operational connection with the ink application roller (5). - The printing press according to Claim 22,
characterized in that
the screen rollers (6) of the metering systems (6, 7, 8) have pick-up volumes of the cells which deviate from one another. - The printing press according to Claim 1,
characterized in that
the printing press comprises at least one further short inking unit of identical construction and in that the at least one screen roller (6) of the first short inking unit has pick-up volumes of the cells that deviate from one another with respect to a screen roller (6) of a second short inking unit.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006048285 | 2006-10-11 | ||
DE102007041203A DE102007041203A1 (en) | 2006-10-11 | 2007-08-31 | Short inking unit for a processing machine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1911586A2 EP1911586A2 (en) | 2008-04-16 |
EP1911586A3 EP1911586A3 (en) | 2011-01-19 |
EP1911586B1 true EP1911586B1 (en) | 2014-03-19 |
Family
ID=39006515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07018331.4A Not-in-force EP1911586B1 (en) | 2006-10-11 | 2007-09-19 | Short inking unit for a processing machine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1911586B1 (en) |
DE (1) | DE102007041203A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007059335A1 (en) * | 2007-12-07 | 2009-06-10 | Manroland Ag | Applicator with a forme cylinder and at least one applicator roll in a processing machine |
DE102008011241B4 (en) * | 2008-02-26 | 2015-06-11 | manroland sheetfed GmbH | Processing machine with a short inking unit |
DE102008000862A1 (en) * | 2008-03-27 | 2009-10-01 | Manroland Ag | Components e.g. inking roller, dehumidifying method for short inking unit i.e. anilox inking unit, of processing machine i.e. printing machine, involves exposing lateral areas of engraved roller and inking roller to airflow |
DE102008041909A1 (en) * | 2008-09-09 | 2010-03-11 | Manroland Ag | Pressurized fluid applicator i.e. lacquer module, for use in sheet offset printing press, has dosing systems comprising applicator rollers that cooperate with each other for selectively supplying pressurized fluid to plate cylinder |
DE102013204892B4 (en) * | 2013-03-20 | 2017-04-27 | Koenig & Bauer Ag | Printing machine for hollow bodies |
DE102015222908A1 (en) * | 2015-11-20 | 2017-06-08 | Heidelberger Druckmaschinen Ag | Method for operating a printing machine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0279295A2 (en) * | 1987-02-19 | 1988-08-24 | Albert-Frankenthal AG | Inking unit |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB337250A (en) | 1930-05-30 | 1930-10-30 | Robert Wheatley | Improved rubber-covered rollers and their construction |
DE8224875U1 (en) | 1982-09-03 | 1987-01-08 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Inking unit for offset printing machines |
DE3938449A1 (en) | 1989-11-18 | 1991-05-23 | Roland Man Druckmasch | PRINT WORK |
US5415612A (en) * | 1992-06-12 | 1995-05-16 | American Roller Company | Compressible roller |
DE9310713U1 (en) * | 1993-07-17 | 1993-09-02 | Man Roland Druckmaschinen Ag, 63069 Offenbach | Inking roller |
DE4408615C2 (en) | 1994-03-15 | 1996-01-11 | Roland Man Druckmasch | Cup roller within an application unit of a rotary printing press |
DE4431464A1 (en) | 1994-09-03 | 1996-03-07 | Koenig & Bauer Albert Ag | Inking process for form cylinder of rotary press with short inking device |
DE19736339B4 (en) | 1997-08-21 | 2004-03-18 | Man Roland Druckmaschinen Ag | Temperature control of a printing unit and temperature control device |
DE10160734B4 (en) | 2001-01-11 | 2012-06-21 | Heidelberger Druckmaschinen Ag | press |
US20060070570A1 (en) * | 2002-06-11 | 2006-04-06 | Man Roland Druckmaschinen Ag | Application device for a printing/painting unit in a processing machine |
DE10337758A1 (en) * | 2003-08-14 | 2005-03-10 | Schaefer Kg | Roller for inking or dampening of offset printing presses |
-
2007
- 2007-08-31 DE DE102007041203A patent/DE102007041203A1/en not_active Withdrawn
- 2007-09-19 EP EP07018331.4A patent/EP1911586B1/en not_active Not-in-force
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0279295A2 (en) * | 1987-02-19 | 1988-08-24 | Albert-Frankenthal AG | Inking unit |
Also Published As
Publication number | Publication date |
---|---|
EP1911586A2 (en) | 2008-04-16 |
EP1911586A3 (en) | 2011-01-19 |
DE102007041203A1 (en) | 2008-04-24 |
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