EP1870238B1 - Système pour régler la température des éléments d'une machine d'impression - Google Patents

Système pour régler la température des éléments d'une machine d'impression Download PDF

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Publication number
EP1870238B1
EP1870238B1 EP07111579A EP07111579A EP1870238B1 EP 1870238 B1 EP1870238 B1 EP 1870238B1 EP 07111579 A EP07111579 A EP 07111579A EP 07111579 A EP07111579 A EP 07111579A EP 1870238 B1 EP1870238 B1 EP 1870238B1
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EP
European Patent Office
Prior art keywords
tempering
printing
agent
temperature
supply
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EP07111579A
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German (de)
English (en)
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EP1870238A1 (fr
Inventor
Klaus Georg Müller
Jürgen MARX
Karl Schaschek
Georg Schneider
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication of EP1870238A1 publication Critical patent/EP1870238A1/fr
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    • 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
    • B41F13/22—Means for cooling or heating forme or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/002—Heating or cooling of ink or ink rollers

Definitions

  • the invention relates to a system for the temperature control of components of a printing press according to the preamble of claim 1.
  • a temperature-controlled system for printing machines wherein a compression machine optionally provides both for cooling and heating purposes temperature control for the temperature control of inking rollers several printing units. This is done by optionally charging a heat exchanger with compressed, then cooled in a condenser and finally relaxed temperature control and in the other case a Byepass with not relaxed, and therefore hot tempering.
  • a heat exchanger In the heat exchanger is now either a cooling or heating of the rollers passing through secondary Temperierstoff kauriusriusriuseaues.
  • the regulation of the temperature is effected by metering with this temperature control means based on a temperature sensor and a control valve of each roller.
  • the DE 296 08 045 U1 shows a system for temperature control, wherein for cooling dampening solution, a first cooling device is provided with a first cooling process and a first fluid circuit, which on the one hand thermally via a heat exchanger with the fountain solution supply circuit of dampening and on the other hand thermally via a second heat exchanger with a second fluid circuit is coupled, which in turn is thermally coupled with a second, designed as a cooling tower cooling process.
  • the DE 44 26 083 A1 discloses a Temper michsvortechnische, wherein a tempering fluid for controlling the temperature of a roller in its circuit optionally via a heat exchanger in thermal contact with a cooled fluid circuit or a heating heat exchanger can be performed.
  • WO 03/045694 A1 and the WO 03/045695 A1 Methods are known in which by tempering a cooperating with a printing ink rotating component of a printing unit a tack of the ink on the rotating component in a temperature range of 22 ° C to 50 ° C is kept substantially constant, the speed of the ink from the temperature on the lateral surface of the rotating component and its production speed depends.
  • the application consists in particular in a waterless printing unit, preferably in a printing unit for newspaper printing.
  • the EP 06 52 104 A1 discloses a printing unit for waterless offset printing with a control device with a plurality of regulators to prevent buildup of ink on a transfer cylinder of the printing unit depending on the deviation of each associated with a thermal sensor on the transfer cylinder or a transfer cylinder associated with the form cylinder of the printing unit or a Farbreibzylinder one Form cylinder associated inking detected temperature in each case from a target value in each case a control valve for controlling the respective cylinders supplied coolant amount, eg. As water controls.
  • During printing should by the controlled amount of coolant constant keeping the temperature of a arranged on the forme cylinder printing form z. B. be possible in a temperature range of 28 ° C to 30 ° C.
  • the temperature of the transfer cylinder sdl be kept at about 34 ° C to 35 ° C and the temperature of the inking unit between 25 ° C and 27 ° C.
  • the supply of the amount of coolant is also possible to preheat the printing unit, so that a chipping of the ink can be avoided at the start of printing with concomitant accumulation of paper particles in the inking unit, wherein a temperature profile of the coolant for preheating after a z. B. stored in the control unit storage unit entered temperature-time curve can be regulated.
  • the associated printing machine with a forme cylinder has a short inking unit with an ink fountain, an anilox roller and an inking roller. At least one of the inking rollers or the forme cylinder can be tempered by the tempering device. The temperature is controlled by cooling or heating either from the lateral surface of the inking rollers or the forme cylinder or inside the inking rollers or the forme cylinder.
  • the color box can also be tempered, in particular also the squeegee for doctoring off excess printing ink from the anilox roller.
  • the amount of ink transferred to the forme cylinder can be regulated, the optical density measured on the substrate serving as the signal quantity, with the help of the regulators associated with the tempering devices controlling their temperatures.
  • the DE-OS 19 53 590 discloses a printing unit with an inking unit and a dampening unit, which is temperature controlled by means of a tempering device.
  • a setpoint for the temperature can depend on influencing variables, eg. B. the printing speed, determined before the start of the printing process by proofs or adjusted by means of tables.
  • An advantageous upper limit of the temperature of the printing ink is indicated at room temperature.
  • the US 4,481,790 A discloses a tempering of a printing press, wherein in a situation of operation, a chiller switchable as a heat pump, and the heat obtained via the heat pump of a building heating can be fed. In another operating situation, cooling power for components to be cooled is generated with this refrigerating machine.
  • DE 103 02 877 A1 is the waste heat of an internal combustion engine in a printing machine for temperature control, ie heating and / or cooling, used by components.
  • DE 103 16 860 A1 discloses a cooling and tempering system for a printing press, which for cooling a first and a second compression chiller and arranged outside the building heat exchanger for the delivery of heat to the ambient air.
  • the invention has for its object to provide a system for temperature control of components of a printing press.
  • a delivery rate of an ink from a reservoir and scooping on an adjacent rotating body anilox roller can be kept at least approximately constant, so that with an increase in the production speed of the printing machine despite a concomitant decrease in the assets of the anilox roller for the transfer of ink due to an increasingly incomplete emptying of their wells as constant a quantity of ink to the substrate is encouraged.
  • the tack of the ink transported by the forme cylinder is held in value in a suitable range for the printing process, so that in particular a chipping of the ink is avoided on the surface of the printing material.
  • the ink is adjusted depending on the production speed of the printing press with regard to their cleavage and adhesion by adjusting their temperature as needed to the currently existing printing process, the setting of their temperature is done indirectly by adjusting the temperature on the lateral surface of a rotating body leading to this ink.
  • the different timing for performing the adjustment of the temperature of the ink and to carry out the adjustment of the production speed of the printing press are taken into account in an intended change in the production speed of the printing machine.
  • the Fig. 1 shows in a highly simplified representation by way of example four juxtaposed printing units 01; 02; 03; 04 an offset rotary printing machine each with a forme cylinder 06; 07; 08; 09, a transfer cylinder 11; 12; 13; 14 and an impression cylinder 16; 17; 18; 19, wherein for the production of printed on both sides printed products each impression cylinder 16; 17; 18; 19 also preferably as a transfer cylinder 16; 17; 18; 19 is formed, which in turn cooperates with a associated therewith (not shown) form cylinder.
  • an image sensor 22, z. B. a color camera 22, preferably a digital semiconductor camera 22 with at least one CCD chip, arranged and directed with its image pickup area preferably directly and directly to the print carrier 21, wherein the image pick-up area of the image sensor 22 z. B. detects the entire width of the print carrier 21, wherein the width of the print carrier 21 extends transversely to the transport direction through the printing press.
  • the image sensor 22 thus detects an electronically evaluable image z. B. of the entire width of the printed paper web 21, wherein along the width of the paper web 21, at least one printed image on the print carrier 21 is applied.
  • the image sensor 22 is z. B. formed as a surface camera 22.
  • the image sensor 22 transmits the correlated with the recorded image data to a suitable evaluation unit 23, in particular a program-controlled electronic computer system 23, the z. B. is arranged in a belonging to the printing press control room.
  • a suitable evaluation unit 23 in particular a program-controlled electronic computer system 23, the z. B. is arranged in a belonging to the printing press control room.
  • Parameters relevant for the printing process can be checked by an analysis and evaluation of the recorded image carried out in the evaluation unit 23 and corrected, if necessary, by programs running in the evaluation unit 23 so to speak automatically, ie program-controlled.
  • the evaluation and correction of all relevant parameters for the printing process takes place here practically at the same time by means of the same evaluation unit 23.
  • the image acquired by the image sensor 22 during an ongoing production of the printing press and supplied in the form of a data set of the evaluation unit 23 is evaluated as to whether the current Image detected and evaluated printed image compared to a previously recorded and evaluated print image a Tonwertver selectedung, in particular a dot gain, ie a current
  • the captured image is checked in the current printing process compared to a reference image.
  • the dosage and / or the supply of the printing ink in the printing machine is determined by at least one outgoing from the evaluation unit 23, via a data line 24 and at least one of the printing units 01; 02; 03; 04 modified first control command to the effect that the Tonwertver selectedung is minimal by a subsequent to the currently tested image applying ink.
  • a picture of a print image in its color impression following the currently checked image corresponds better to a previously checked image of a print image, ie the reference image.
  • the control and regulation of the Tonwertver selectedung is therefore important to keep the color balance or gray balance and thus the color impression of the printed products - possibly within permissible tolerance limits - as constant as possible in the printing process, which is an important quality feature for printed products.
  • the amount of data generated from the image of the printed image and transferred to the evaluation unit 23 is used to check the registering of the printed image applied on the print substrate 21, in particular for checking and optionally correcting a color register of a printed image printed in multicolor printing.
  • at least one preferably motorized adjustable register is provided, for. B.
  • a circumferential register or a page register optionally also a diagonal adjustment for at least one of the forme cylinder 06; 07; 08; 09 relative to its associated transfer cylinder 11; 12; 13; 14, wherein the register by at least one outgoing from the evaluation unit 23, guided over a data line 26 and at least one of the printing units 01; 02; 03; 04 acting second control command is regulated in response to this test to the effect that for a recording of the evaluated image subsequent printing image results in a maximum register accuracy.
  • An adjustment or adjustment of the Register is thus calculated by the evaluation unit 23 from the image data which the image sensor 22 provides to the evaluation unit 23. With the adjustment or adjustment of the side register and fan-out conditional transverse strain can be counteracted, this transverse strain occurs in particular in printing machines, which have a so-called four-tower design for their printing units.
  • the printing machine is preferably formed undulating.
  • a printing press preferably have the forme cylinder 06; 07; 08; 09 via individual drives, by the drives for the impression cylinder 16; 17; 18; 19 are mechanically decoupled, so that the phase position or the angular position of the forme cylinder 06; 07; 08; 09 against the counter-pressure cylinders 16; 17; 18; 19 by an appropriate control or regulation, preferably the drives of the forme cylinder 06; 07; 08; 09 can be changed whenever an evaluation of the image taken by the print carrier 21 by means of the image sensor 22 makes this seem necessary.
  • the control or regulation of the printing unit 01; 02; 03; 04 in particular the drives of the forme cylinder 06; 07; 08; 09th
  • a control command generated by the evaluation unit 23 from the image content of the image recorded by the print image acts on a control device or control device of a preferably position-controlled electric motor for rotary drive during printing of at least one of the forme cylinder 06; 07; 08; 09, the transfer cylinder 11 assigned to it; 12; 13; 14 or impression cylinder 16; 17; 18; 19.
  • the drive in particular the forme cylinder 06; 07; 08; 09 or of this forme cylinder 06; 07; 08; 09 associated transfer cylinder 11; 12; 13; 14 independent of the drive of the forme cylinder 06; 07; 08; 09 or of this forme cylinder 06; 07; 08; 09 associated transfer cylinder 11; 12; 13; 14 in another printing unit 01; 02; 03; 04 the Printing machine preferably controlled or regulated by electrical signals, in particular, the mutual angular position or phase position of the pressure of the printed product, ie the printed image involved, in different printing units 01; 02; 03; 04 of the printing press arranged form cylinder 06; 07; 08; 09 or their associated transfer cylinder 11; 12; 13; 14 by the associated control device or control device, for.
  • the electric motor of the forme cylinder 06; 07; 08; 09 is preferably coaxial with the axis of the forme cylinder 06; 07; 08; 09 arranged, wherein the rotor of the motor with a pin of the axis of the forme cylinder 06; 07; 08; 09 is preferably rigidly connected in the manner as z. B. in the DE 43 22 744 A1 is described.
  • the in different printing units 01; 02; 03; 04 of the printing machine arranged impression cylinder 16; 17; 18; 19 can, such. B. in the EP 0 812 683 A1 described, for. B. be mechanically interconnected by a train of gears and z. B.
  • the forme cylinder 06; 07; 08; 09 or the associated transfer cylinder 11; 12; 13; 14 with regard to their drive from the counter-pressure cylinder 16 assigned to them; 17; 18; 19 remain decoupled.
  • Between the forme cylinder 06; 07; 08; 09 and its associated transfer cylinder 11; 12; 13; 14 may be a coupling z. B. by means of intermeshing gears, so that the forme cylinder 06; 07; 08; 09 and its associated transfer cylinder 11; 12; 13; 14 are driven by the same drive.
  • the control device or control device of the drives at least the forme cylinder 06; 07; 08; 09 is z. B. integrated in the evaluation unit 23.
  • the control or regulation of the phase position or the angular position of the forme cylinder 06; 07; 08; 09 against the counter-pressure cylinders 16; 17; 18; 19 takes place with respect to a fixed reference setting, so that the forme cylinder 06; 07; 08; 09 with respect to the associated counter-pressure cylinder 16; 17; 18; 19 may have a leading or trailing rotation, wherein the relation of the rotations of the forme cylinder 06; 07; 08; 09 and its associated impression cylinder 16; 17; 18; 19 depending on Adjusted image content of the image taken by the image sensor 22 image and also tracked with the control device or control device of their drives.
  • phase position or angular position of each other in the printing process downstream form cylinder 06; 07; 08; 09 be controlled or regulated with respect to a fixed reference setting, which in particular in the multi-color printing of a successive printing units 01; 02; 03; 04 of the printing press color printed matter is of importance. If the picture taken of the print image, which preferably has a plurality of colors, shows that for a print in one of the printing units 01; 02; 03; 04 verlacten ink correction needs, is the evaluation unit 23 to the relevant printing unit 01; 02; 03; 04 from the detected interference counteracting control command.
  • control unit to be controlled by the evaluation unit 23 via setting commands, z. B. the actuators to control the supply of ink and the drives for controlling the circumferential register or the page register, are connected in the printing machine to a standing with the evaluation unit 23 data network, are provided for transmitting the first and the second control command data lines 24th ; 26 preferably realized by the data network.
  • the checking of a tone value change that occurs in the printing process and the check for register integrity are advantageously carried out simultaneously in the evaluation unit 23 by a parallel data processing.
  • these two tests are carried out continuously in the current printing process, and advantageously at the end of the printing process and also for each individual printed copy produced.
  • the check for register validity initially refers to a congruent coincidence in the position of the print image or type set between perfecting or between the top and bottom in the production of two-sided printed matter.
  • the test also includes z. B. the test of the passers, ie the test of the intended accuracy, the individual partial colors have in the overprint in multi-color printing. Register accuracy and register accuracy play an important role in multicolor printing.
  • the image sensor 22 is advantageously a lighting device 27, z. B. associated with a flashlamp 27, wherein from the flashlamp 27 emanating short-term flashes of light fast motion processes, as they represent the printing process, seem to be stopped by a stroboscopic method and make it observable to the human eye.
  • the detection of the printed image carried out with the image sensor 22 can also take place in or on a delivery 28 of the printing press, which is described in US Pat Fig. 1 is shown by a dashed line of the image sensor 22 and the associated lighting device 27 as a possible option for detecting the printed image behind the last printing unit 04 of the respective printed page or at the end of the printing press.
  • the image sensor 22 and optionally the associated lighting device 27 By an appropriate choice of the image sensor 22 and optionally the associated lighting device 27, the detection of the image on a visually invisible spectral range, such. As the infrared or ultraviolet range or be moved there. As an alternative to the preferred area camera 22 with a flashlamp 27, the use of a line camera with a permanent lighting is possible.
  • each printed copy is preferably subjected to a check, a trend is recognizable in the running printing process, ie in the continuous printing, both for the tone value change and for the registration of successively produced printed copies.
  • the printed copies can be classified into groups of different quality levels and marked as reject copies if an allowable tolerance limit is exceeded.
  • Committee copies can be obtained from the Evaluation unit 23 discharged in a controlled manner or stored in particular in a sheet-fed press in the delivery 28 at least on a separate storage stack 29.
  • at least one third positioning command which is directed via a data line 31, is issued.
  • the paper web 21 is at least in one of the printing units 01; 02; 03; 04, preferably in that printing unit 01; 02; 03; 04, in or on which the capture of the images with the image sensor 22, a rotary encoder 32 is installed, the current rotary encoder 32 in a fixed ratio to the speed of that transfer cylinder 11; 12; 13; 14 at which the image sensor 22 detects the images.
  • the rotary encoder 32 outputs its output signal to the evaluation unit 23 and / or also to the image sensor 22.
  • the output signal of the rotary encoder 32 is u. a. used as a trigger for the flash lamp 27.
  • the image detected by the image sensor 22 and supplied in the form of a data quantity to the evaluation unit 23 is preferably displayed on a monitor of an input and output unit 33 connected to the evaluation unit 23 and standing in bidirectional data exchange.
  • the input and output unit 33 provides correction options for at least one of the mentioned controls by allowing manual inputs and / or triggering of at least one control command.
  • the evaluation unit 23 has a memory 34, inter alia, for the storage of acquired image sequences and for the storage of data that is required for a logging and an associated documentation of the quality of the printed products and for Statistical analyzes are useful for the printing process. It is of advantage if the evaluation unit 23 can provide the data evaluated and / or stored in it through a corresponding connection 36 to a company network.
  • the evaluation unit 23 which correlate with an image currently recorded during ongoing production of the printing press, with data of a previously generated image
  • the data of the previously generated image is provided with a prepress preceding in one of the printing press correlated, wherein a data processing device of the prepress (not shown) is connected to the evaluation unit 23 and the data of the previously generated image of the evaluation unit 23 passes.
  • a data processing device of the prepress (not shown) is connected to the evaluation unit 23 and the data of the previously generated image of the evaluation unit 23 passes.
  • the data of the previously generated image are generated as an alternative or in addition to data that correlate with an image recorded by the image sensor 22 and provided to the evaluation unit 23 for evaluation.
  • Prepress data correlated with the print image forms the more accurate reference data for controlling or regulating the color register against data obtained from previously printed images in current production.
  • register control and color control based on an analysis of the image captured by the image with the image sensor 22 is possible by evaluating the image of the image with respect to various parameters relevant to the printing process in a single evaluation unit 23, and simultaneously inspecting the image Print image to assess the quality of the printed matter.
  • the register control is based on a register measurement in the printed image. After all printing inks required for the printed image have been printed, the entire printed image is preferably acquired by the camera at the end of the printing press.
  • a decomposition of the detected printed image is preferably carried out in the Color separations CMYK common in printing technology as well as an analysis of suitable print image sections and a relative position determination of a color separation with respect to a reference color separation by correlation methods with a previously acquired or obtained reference print image.
  • the reference image or reference value for image section or a print image mark (density target) is z. B. either from the prepress stage, which has the advantage that the reference image is already present in the individual color separations, or it will be a reference image, for. B. a printed image having reference sheet, used for the evaluation of a pressure of the printed image, this reference image must be additionally decomposed into the color separations.
  • This reference sheet is recorded after the image has been adjusted manually once so that all printed inks are properly aligned with each other and a proper color register is set.
  • This reference print image obtained in this way can be stored for subsequent repeat jobs, so that it is possible to fall back on this previously recorded reference image in the case of a repeat job.
  • the color register can also be adjusted automatically by the evaluation unit 23 without manual intervention, which leads to a further reduction of the waste in the case of a repeat job.
  • Suitable cutouts are selected based on which the position of the individual color separations is determined to the reference color separation. This is the so-called set position for the later register comparison.
  • This reference image including the color separations and the target position z. B. stored in memory 34.
  • the selection of the appropriate printed image sections can be done manually by the operator or automatically by the evaluation unit 23, z. B. for a presetting of the desired position, done.
  • Suitable printed image sections with regard to registration measurement are areas in which the printing ink to be measured dominates or exclusively occurs.
  • each print image is captured by means of the camera system and decomposed into the color separations CMYK.
  • the position of the individual color separations is now determined within the previously defined, suitable print image sections. This is done by comparison with the color separations from the reference print image z. B. by a correlation method, in particular a cross-correlation method.
  • the position of the color separations can be determined to be about 0.1 pixel of the camera resolution. If a stationary register offset is determined repeatedly for each printed sheet 21, a high accuracy of the measured value is ensured by a suppression of stochastic scattering.
  • the determination of the position of the individual color separations takes place in the web running direction corresponding to the longitudinal register and in the transverse direction to the web running direction corresponding to the page register.
  • the position differences thus obtained are converted by the evaluation unit 23 into setting commands and used as correction signals to the adjustment system, i. H. to the drives, sent.
  • spot colors do not match the standard colors; H. the scales CMYK, mixed, but separately printed. Special colors are therefore also measured separately.
  • the areas in which special colors are printed must be specified.
  • suitable areas are now defined, in which the position of the color separation in the same manner as for the scale colors CMYK, d. H. the standard colors are determined.
  • the further procedure for register control for spot colors is identical to the procedure described above for standard colors.
  • control of the ink supply is determined on the basis of acquired data on the color density and / or spectral analysis via an adjustable temperature on the lateral surface of the rotational body involved in the printing process is performed as a reference variable.
  • the color density corresponds to a layer thickness of the ink applied to the substrate and can, for. B. be detected densitometrically, both inline, ie in the current printing process as well as offline, ie by a measurement of discharged from the current printing process printed copies.
  • an adjusting device 37 is provided, which a signal with data from the evaluation unit 23 are supplied. For example, depending on z. B. determined by the setting device 37 deviation of a currently detected color density D1 of a predetermined color as a setpoint density D2 a change of the setting device 37 by means of at least one tempering device 57; 58 set temperature on the lateral surface of at least one of the participating in the printing process, ink-transporting rotary body 43; 47; 53; 54, z. B. cylinder 43; 47 and rollers 53; 54 made. With regard to a fast, systematic and thus reproducible change z. B.
  • a functional relationship between the deviation in the color densities D1 and D2 and the temperature to be set be kept, this functional relationship z. B. in at least one characteristic, table or in another suitable, the correlation representing form z. B. is fixed graphically or electronically.
  • the adjustment device 37 may include a control device 72, for. B. an electronic control unit 72, and / or a supply device 71 not shown here for the metering and supply of tempering agent have (see here 8 to 11 ).
  • the control electronics 72 then act on actuators (eg valves) of the supply device 71, for example according to the specifications determined by means of a stored logic.
  • the in the Fig. 2 illustrated printing machine is in particular designed as a rotary printing machine and has a printing unit 41, which at least one inking unit 42, a printing plate 44-bearing cylinder 43, z. B. has a form cylinder 43 executed printing cylinder 43, and a counter-pressure cylinder 46 has. Particularly advantageous is the solution described below for printing machines or operations at a web speed of more than 10 m / s, in particular greater than or equal to 12 m / s.
  • the printing form 44 is preferably designed as a printing plate 44 for the planographic printing (planographic printing plate 44), in particular for the waterless planographic printing (waterless planographic printing plate 44).
  • the printing unit 41 is z. B.
  • the transfer cylinder 47 forms with the impression cylinder 46 in a print-on position on a substrate 49, z. B. a printing substrate 49, a printing point 51.
  • the impression cylinder 46 may be another transfer cylinder 46 of a non-designated further printing unit, or a no ink leading impression cylinder 46, z. As a steel or a satellite cylinder, be.
  • the printing form 44 can be sleeve-shaped or else designed as one (or more) pressure plate (s) 44, which is fastened or suspended with its ends in at least one narrow channel which does not exceed a circumferential width of 3 mm (indicated in FIG Fig. 2 ).
  • the elevator 48 on the transfer cylinder 47 sleeve-shaped or as (at least one) blanket be executed 48, which is also attached and / or tensioned in at least one channel.
  • the blanket 48 designed as a multilayer metal blanket the channel is also designed with the above-mentioned maximum width.
  • the inking unit 42 has a paint supply 52, z. B. a paint tray with a fountain roller or a lift, or a chamber doctor blade with ink supply, and at least one engageable with the forme cylinder 43 in a print-on position roller 53, z. B. an applicator roller 53.
  • the ink is transported in the example shown by the ink supply 52 via an executed as an anilox roller 54 54, the roller 53, the forme cylinder 43 and the transfer cylinder 47 on the substrate 49 (eg web-shaped or as a sheet). It may also be a second, with the anilox roller 54 and the forme cylinder 43 acting together, arranged in phantom 53 arranged.
  • the anilox roller 54 has recesses or cups on its lateral surface in order to be filled with this printing ink from a reservoir 61 for the printing ink, e.g. B. scoop color box 61 contained in a printing ink and on an adjacent rotary body 53, z. B. the applicator roll 53 to transfer.
  • a reservoir 61 for the printing ink e.g. B. scoop color box 61 contained in a printing ink and on an adjacent rotary body 53, z. B. the applicator roll 53 to transfer.
  • the printing unit 41 is embodied as a so-called “printing unit for waterless planographic printing", in particular “waterless offset printing” (dry offset), ie, in addition to the supply of printing ink, no further supply of dampening solution is required for the formation of "non-printing" areas
  • the method may eliminate the application of a moisture film to the printing form 44, which otherwise inhibits the nonprinting areas on the printing form 44 from accepting ink in "wet offset.” In waterless offset printing, this is achieved by the use of special inks and the specific surface finish
  • a silicone layer in waterless offset printing can take over the role of the wet offset hydrophilic area of the wet offset and prevent the printing plate 44 from taking up ink.
  • the non-printing areas and the printing areas of the Printing form 44 achieved by the formation of areas of different surface tensions when interacting with the ink.
  • the non-printing areas are preferably formed as a silicone layer, a printing ink with a compared to the wet offset significantly higher tack is needed for this purpose.
  • the tackiness represents the resistance with which the ink counteracts the film splitting in a nip or during the transfer of the printing ink in the printing zone between the cylinder and the printing substrate.
  • the cylinders 43; 47 and the inking unit 42 tempered, in particular cooled, and kept at a constant temperature in order to avoid cloning for the changing operating conditions during printing.
  • the temperature dependence of rheological properties such. As the viscosity and / or the tack, is now used to influence, in particular regulation, the amount of ink to be transported from the reservoir 61 to the substrate 49. Instead (or in addition) of mechanical actuators, such. As the opening or closing of doctor blades or the changes in a speed of lifters or film rollers, by changing the temperature on the lateral surface of at least one of the rotational body 43 involved in the printing process; 47; 53; 54 are influenced on the result of the comparison of the target color density D2 with the detected actual color density D1.
  • the tack of the ink in addition to the separation of printing and non-printing areas, however, also influences the thickness of a plucking in the interaction of a color-guiding cylinder 43; 47 with the substrate 49.
  • the substrate 49 as uncoated, low-density newsprint with very good absorbency, ie open-pored and with very low Wegschlagzeit executed, increases the risk of loosening caused by fibers or dust. This danger is but z. B. also used in web offset printing lightly coated or lightweight, coated paper grades with a coating weight of z. B. 5 - 20 g / m 2 , in particular 5-10 g / m 2 or even less before.
  • the temperature is particularly suitable for uncoated or coated papers with a coating weight of less than 20 g / m 2 .
  • the temperature of the ink-carrying cylinder 43; 47 then advantageous if it is found that the stroke is "pulled off” by increasing speed from the paper (at least partially).
  • one or more of the color-leading components such. B. in an advantageous embodiment of the form cylinder 43 designed as a printing cylinder 43 as farbfacedes component 43, and / or the ink itself, are heated simultaneously in dependence on the production speed V of the press, including a correlating with the production speed V of the printing press signal z. B. sensor on the ink-carrying transfer cylinder 47, z. B. with a rotary encoder (not shown), tapped and the adjusting device 37 and / or the evaluation unit 23 is supplied.
  • the temperature on the lateral surface at least one of the rotating bodies 43 involved in the printing process; 47; 53; 54, preferably of the forme cylinder 43, is not kept constant for all production speeds V in a specific temperature range, as otherwise usual in waterless offset printing, but instead has a different desired temperature T i, soll for different production speeds V.
  • the setpoint temperature T i, soll is adjusted by means of the setting device 37 as a function of the production speed V such that the tack of the printing ink at any desired production speed V is within a predefinable window of tolerable tack values. For a higher production speed V, an increased value is selected for the setpoint temperature T i, soll of the corresponding component 43 or the printing ink.
  • a regulation is based for example on the principle that for the intended, imminent or currently set production rate V as a reference variable due to a systematic assignment, a specific value or maximum value for the setpoint temperature T i, soll of the component 43 or the printing ink as output variable is provided.
  • the desired value or maximum value represents a presetting temperature, which in the first case corresponds to a temperature to be maintained and in the second case corresponds to an upper limit of an admissible temperature.
  • a photoelectric sensor 56 preferably an image sensor 56, in particular a CCD camera 56, preferably inline carried out the currently applied to the substrate 49 by the printing process color density D1 and the comparison of this detection value with that in this print for the color density D2 however, the temperature is varied and tracked until a sufficient coincidence between the actual color density D1 and the target color density D2 is achieved.
  • the values of the relationship may differ significantly from the stated values.
  • the solution is still the common setting of the temperature of the forme cylinder 43 as a function of the production speed V, in such a way that it has a higher setpoint or maximum value in a range of higher production speeds V than for a range of lower production speeds V. Plucking between ink-guiding cylinder 43; 47 and the substrate 49 reduced and ideally almost prevented.
  • the anilox roller 54 and the forme cylinder 43 each have an effect of their interior on the respective lateral surface, preferably of a flowable tempering, z.
  • a flowable tempering preferably of a flowable tempering, z.
  • the adjusting device 37 is formed as a control device 37 or as a control device 37 depending on the present case, whether the process is controlled or regulated. In the case of the configuration as a control device 37, there is no feedback in the process the photoelectric sensor 56 and the signals or data supplied by it.
  • the temperature (empirical) at which the desired color density can be determined on the product is determined, for example, in the run-up to production for the relevant pairing (s) of printing ink / paper at different production speeds V is.
  • the currently set temperature can be detected by means of at least one thermo sensor 59 arranged on or at least close to the lateral surface of the anilox roller 54, the output signal of which is fed to the adjusting device 37 and then in dependence on one in the evaluation unit 23 Performed comparison of the current temperature with a temperature set as the target value if necessary adjusted again and be tracked to promote the required amount of ink for the printed image.
  • the scheme the temperature at the lateral surface of the forme cylinder 43 using a further (not shown) thermocouple is similar to that for controlling the temperature on the lateral surface of the anilox roller 54.
  • this is not additionally varied over the result of the output unit 23, but it correlates firmly with the production speed V of the printing machine.
  • a temperature to be set for a value of the production speed V of the printing press on the lateral surface of the roller 54, in particular the anilox roller 54 and / or the cylinder 43, in particular the forme cylinder 43 is started or at least started with the setting of this required temperature before the printing press the new value of Production speed V sets, so that the temperature adjustment with respect to an intended change in the production speed V is leading.
  • the measures described above are also suitable for setting the temperature to be set on the lateral surface of the anilox roller 54 as a function of the production speed V of the printing press or at least adjustable such that it increases with increasing production speed V the printing machine declining assets of the formed on the lateral surface of the anilox roller 54 depressions for transferring ink on the anilox roller 54 adjacent rotational body 53 is compensated by a temperature-induced reduction of a viscosity of the ink.
  • the filled with ink wells or wells emptied on the lateral surface of the anilox roller 54th increasingly imperfect, so that the deteriorating transfer behavior of the anilox roller 54 can be compensated by an adapted liquefaction of the ink to be transferred, wherein the reduction of the viscosity of the ink is advantageously effected by means of the temperature to be set on the lateral surface of the anilox roller 54.
  • the tempering device 57; 58 formed such that with the tempering device 57; 58 associated adjusting device 37 due to a predetermined functional assignment for a value of the production speed V of the printing press on the lateral surface of the roller 54, in particular the anilox roller 54, and / or the cylinder 43, in particular the forme cylinder 43, set temperature within predetermined limits z. B. is changeable by a manually executed setting. As a result, a possibility of intervention in machine-specified settings is given, whereby within a maximum permissible tolerance range of z. B. +/- 5% or 10% with respect to the default value as needed a z. B. manually executed fine tuning is feasible.
  • the threshold values may be symmetrically or asymmetrically spaced from the default value, e.g. B. also define a tolerance range between - 5% and + 10%.
  • Fig. 3 schematically shows a functional relationship (eg dependence B in Fig. 6 ), such as a target temperature T i, should on the lateral surface of at least one of the rotating body 43 involved in the printing process; 47; 53; 54 may be dependent on the production speed V of the printing press.
  • the functional relationship can be linear or not linear. In any case, based on the functional relationship for a printing process determined inter alia by the printing ink used and the substrate 49 used as a function of the production speed V of the printing machine, a suitable value for the on the lateral surface of at least one of the rotating body 43 involved in the printing process; 47; 53; 54 to be set target temperature T i, should be determined.
  • the value determined by machine for the at least one of the rotating bodies 43 involved in the printing process on the lateral surface; 47; 53; 54 to be set target temperature T i, should be within specified limits in the sense of fine-tuning z. B. be manually changeable, which in the Fig. 3 is indicated by a vertical, enclosed in boundary lines double arrow.
  • Fig. 4 also shows by way of example a functional relationship of an amount of ink delivered by the anilox roller 54 as a function of the production speed V of the printing press.
  • the viscosity of the ink to be delivered can be changed such that the delivery rate remains at least approximately constant with a change in the production speed V of the printing press. This can preferably take place via a reserved relationship (eg dependence A in FIG Fig. 6 ) between production speed V and a target temperature T j, should take place.
  • the delivery rate of the anilox roller 54 may alternatively or in addition to its dependency on the production speed V of the printing machine be made dependent on a determined deviation of the currently detected color density D1 from the color density D2 predetermined as the desired value.
  • the index "i" or "j" in the setpoint temperature T i, soll or T j, soll should indicate that this is a plurality of deposited dependencies A; B for various components 43; 54 and / or color types F and / or paper types can act.
  • the storage unit 34 of the adjustment device 37 there is a set of differing relationships A; B at least for the respective setpoint temperature T i, soll ; T j should be deposited with the screen roller 54 and the forme cylinder 43, to which by means of the input and output unit 33 z. B. the adjustment device 37 can be accessed.
  • Fig. 6 and 7 represent an exemplary embodiment in a display and / or input mask a tempering, wherein a specification of the setpoint temperature T i, should; T j, is the temperature of the component 43; 54 - here the anilox roller 54 and the forme cylinder 43 - in dependence A for the forme cylinder 43 and B for the anilox roller 54 from the production speed V takes place.
  • T i the setpoint temperature
  • T j the temperature of the component 43; 54 - here the anilox roller 54 and the forme cylinder 43 - in dependence A for the forme cylinder 43 and B for the anilox roller 54 from the production speed V takes place.
  • the setting device 37 or the evaluation unit 23 in a database of the control center computer, for different inks or color types color-specific curves (analytic) or supporting points (tabular) for the relationship between the setpoint temperature T i; T j, should the relevant component 43; 54 and the production speed V deposited.
  • the stored dependency A; B (a curve and / or the deposited support points) uploaded and as a basis for setting the temperature of this component 43; 54 used.
  • the curves or support points can be changed by the operator to make an adjustment and then changed in the memory unit 34 can be stored so changed.
  • T i, soll ; T j is the temperature of the component 43; 54 defined for the present production rate V, as a default value for the target temperature T i, soll ; T j, should be output and implemented, for example via a below explained in more detail supply device 71 with control electronics 72.
  • An advantage is an education, according to which a reserved dependency A; B (as a curve and / or as a series of fulcrums) can be corrected by the operator as a whole, absolutely or relatively up or down.
  • a reserved dependency A; B (as a curve and / or as a series of fulcrums) can be corrected by the operator as a whole, absolutely or relatively up or down.
  • Fig. 6 in each case for the forme cylinder 43 and the anilox roller 54
  • the dependency A As a result, the dependency A;
  • an adaptation to special printing density requirements and / or an adaptation to the requirements of different printing materials can be achieved by an input at the display and / or input mask 33 displayed on the monitor of the input and output unit 33 (FIG. Fig. 6 and 7 ) manually, ie manually.
  • target or setpoint temperatures T i should preferably be between 20 and 24 ° C. for production speeds V of 5,000 cylinder revolutions / hour and between 24 and 28 ° C. at 35,000 cylinder revolutions / hour.
  • target or target temperatures T i should be for production speeds V of 5,000 cylinder revolutions / hour between 22 and 27 ° C and at 35,000 cylinder revolutions / hour between 31 and 36 ° C.
  • the z. B. substantially of water (with or without additives) existing tempering is used for temperature control of the printing cylinder 43; 47 and / or the anilox roller 54 by a cooling device 77, z. B. a refrigeration unit 77, provided in a temperature range between 10 ° C and 25 ° C, whereas the temperature control means for controlling the temperature of the drives M of the printing cylinder 43; 47 and / or the anilox roller 54 is provided in a temperature range between 24 ° C and 30 ° C.
  • this refrigeration unit 77 can be an air-cooled condenser and / or a free-cooling device and / or a booster cooling for peak power at higher ambient temperatures z. B. in summer and / or have a heat exchanger for heat recovery and / or a compressor chiller. As explained below, it preferably has at least two of these cooling devices 77.
  • z. B a device for heat recovery 66 such as to FIGS. 12 and 13 described, z. B. 5-10% of the cooling capacity of the cooling processes 87 (see below) are recovered.
  • This recovered energy can be used for internal use 64, such. B. a building temperature, a hot water treatment, aschreibluftbefeuchtung or for fresh air preheating and / or as (partial) energy source for a Schuworth Entity 76 (see Fig. 5 and 8th ) are used.
  • a heat recovery 66 from different sources eg. B.
  • the heat flow 68 and 69 from the return of the supply circuit K3 and / or K2 and / or but with the heat flow 63 indicated from the heated in the range of pressure units ambient air or heated product stream.
  • the temperature of the components 43 about temperature control and heat recovery causes the press only in a relatively small amount of waste heat to the surrounding air and / or to a copy stream of the printed matter produced by her, so fed by energy sources 67 in the printing press energy, especially electrical energy , from Z. B. several kVA is used with high efficiency.
  • the heating water tank 76 has z. B. a capacity of about 1 m 3 per printing tower 73 (see below) and performs the tempering 57; 58 of the printing cylinder 43; 47 and / or the anilox roller 54 for a comparatively short time of z. B. 3 to 4 minutes during startup of the printing press the stored temperature control with a temperature T1 z. B. between 50 ° C and 70 ° C, to the temperature on the lateral surface of the printing cylinder 43; 47 and / or the anilox roller 54 at least for the time of startup of the printing press to at least 50 ° C, z. B. 55 ° C set.
  • the printing press Due to the elevated temperature T1 of the temperature control from the heating water tank 76, the printing press is brought to its operating temperature in a short time, which has a favorable effect on the quality of the printed products produced during the start of the printing press. The output of start-up waste is thereby reduced.
  • decentralized supply devices 71 which together with a (on-site) control electronics 72, for example, form a decentralized adjustment device 37 for one or more printing units 41.
  • the adjusting device 37 or the supply device 71 is assigned to a group of printing units 41, which together form at least one printing unit 73.
  • the printing unit 73 represents the group of all printing units 41 associated with a web to be printed and / or forms a printing tower 73 Fig. 8 on the right side, a first section with a printing tower 73 and a folding apparatus 74 and on the left side a second section with two printing towers 73 and an associated folding apparatus 74 are shown.
  • the supply device 71 can now be assigned to one or more adjacent printing towers 73 of a section.
  • this supply device 71 are described in detail below supply lines and control valves for the targeted supply of components to be tempered 43; 54 with the required temperature control of the appropriate temperature level.
  • the supply device 71 or the associated control electronics 72 receives from a higher-level control device 75, z. B. a implemented in the machine control or a control computer logic, either directly above the target or target temperatures T i , after, as described above there on the basis of deposited dependencies A; B were determined, or the control electronics 72 receives at least data on the color type F and / or the production speed V, which enables a logic implemented in the control electronics 72 to set the target or target temperature T i, based on then stored there dependencies A; B to determine.
  • At least a portion of the heating energy for the memory 76 for example, by a heat recovery 66, in particular z. B. a heat recovery 66 according to or similar to Fig. 13 with heat pump 121, are applied.
  • a the temperature control in the circulation K3 transporting pump 70 can be advantageously provided in a line branch of circuit K3 or in the region of Schuwasser addresses 76.
  • the supply unit 71 least connected to a second circuit K2, which supplies the supply unit 71 for temperature control with temperature control of a second temperature level T2, which, depending on the current requirement, but in principle in a range of z. B. between 5 ° C and 30 ° C, advantageous 8 to 25 ° C, in particular 10 to 15 ° C may be.
  • a second temperature level T2 which, depending on the current requirement, but in principle in a range of z. B. between 5 ° C and 30 ° C, advantageous 8 to 25 ° C, in particular 10 to 15 ° C may be.
  • a cooling device 77, z. B. a refrigeration unit 77 at least one corresponding cooling process (also Temperierstoffmaschine), but advantageously two different energetically cooling processes (Temperierstoffmaschinen) on.
  • the temperature control of these levels in direct or indirect dependence on the level of outdoor temperature and requested by the printing press temperature T2 optionally from the mutually different cooling processes or Temperierffenánn the refrigerator 77 or usually a specific mixture of temperature control of the two in energy terms different cooling processes come (see below). Further details of how this is provided by a cooler 77 will become more apparent below Fig. 11 received.
  • a pump 80 transporting the temperature control medium in the circuit K 2 can advantageously be provided in a line branch of the supply circuit K 2 in the supply unit 71, but also in the refrigeration device 77.
  • a third circuit K3 is provided, which is also supplied by the refrigeration device 77.
  • the refrigeration device 77 (see below) provides for this supply circuit K3 temperature control of a 'middle' temperature level T3, which in a relation to the circuit K2 higher temperature range of z. B. 20 to 35 ° C, in particular 24 to 30 ° C, is located.
  • the request or definition of the desired temperature level T3 to the refrigeration device 77 is carried out by a computing and / or control device 100 of the printing press to a logical unit 92, z. B. Control 92 of the refrigeration device 77 (see Fig. 11 ).
  • the computing and / or control device 100 and the control device 75 may be designed as a control device or be components of the same control device.
  • the circuit K3 is connected to the decentralized supply device 71 and the temperature control is the customers (see below: drives M and / or drive controller) of the printing tower 73 not as above directly, but via the supply device 71, respectively.
  • Fig. 9 represents an advantageous embodiment of a decentralized supply device 71, which includes at least the two supply circuits K1 and K2 and in one possible embodiment (dashed) the supply circuit K3.
  • the supply device 71 is assigned to a group of n printing units 41, which here are the printing units 41 of a printing tower 73 (eg. Fig. 8 , right) form.
  • n printing units 41 are the printing units 41 of a printing tower 73 (eg. Fig. 8 , right) form.
  • n printing units 41 here are the printing units 41 of a printing tower 73 (eg. Fig. 8 , right) form.
  • a printing tower 73 eg. Fig. 8 , right
  • the preparation of the temperature control in the temperature control circuit KFZ short cycle of the forme cylinder 43 takes place in pairs, d. H. in each case two forme cylinders 43, in particular those of a common double pressure point, are supplied in parallel with the conditioned temperature control medium.
  • a temperature control circuit KFZ it is also possible, depending on the requirement, to assign a temperature control circuit KFZ to each individual forme cylinder 43 or to larger groups (eg four, six or eight) of the form cylinders 43.
  • the tempering takes place in such a way that in the temperature control circuit KFZ the temperature control means, driven by a pump 81, rotates and thereby the or the associated (s) to be tempered (s) component (s) 43; 54, in particular their tempering 57; 58, flows through.
  • temperature control agent from one of the supply circuits K1 (for heating purposes) or K2 (for cooling purposes) can be metered in and an adequate amount can be discharged at the intersection point 83.
  • the selection of the temperature control medium to be metered takes place via the position (open or closed) of valves 78, remotely operable switching valves 78 in corresponding, with the supply circuits K1; K2 connected line branches.
  • the intersection 82 now mixes the metered amount with the circulating in the temperature control KFZ temperature control, the rapid mixing in addition by a not shown Verwirbelungshunt between junction 82 and pump 81 can be accelerated.
  • a setpoint for a temperature of the component 43; 54 (explained here on a pair of forme cylinders representative of individual or groups of forme cylinder 54 or anilox rollers 54) can in principle be generated in a very wide variety of ways and should now be used in the supply device 71 for this component 43; 54 are implemented.
  • the specification of the target or target temperature T i should be tempered component 43; 54 as above too Fig. 6 and 7 explained in dependence on the production speed V, z. B. in addition also the color type used F and / or paper type can be considered.
  • the conversion is now carried out in such a way that at least one measured value m2 for the temperature of the temperature control medium shortly before entering the component 43; 54 and / or a measured value m3 for the surface temperature of the component 43; 54 itself, z. B. as measured value m3 of a directed onto the roll surface infrared sensor, and is compared in the control electronics 72 with the relevant target value.
  • temperature control agent from one of the supply circuits K1 or K2 is metered into the circulation system KFZ (or KRW, see below) via the metering valve 79.
  • the selection of the required circuit K2; K3 (temperature level T1 or T2) is effected by a corresponding setting command S1; S2 from the control electronics 72 to the switching valves 78 (eg, one closed and the other opened), the dosage of the required injection quantity via a control command S from the control electronics 72 to the metering valve 79th
  • a measured value m4 may also be present shortly after leaving the component 43; 54 (still in the area of the corresponding printing unit 41) be included.
  • These measured values m1 to m3 and m5 and possibly m4 are now processed together in a multi-cascaded control loop, taking into account runtime corrections and pilot control elements, as described, for example, in US Pat WO 2004/054805 A1 is described in detail and their disclosure content in this context is hereby incorporated by reference.
  • Measured values m6 and m7 for decreasing the temperatures in the supply lines of the supply circuits K1 and K2 are also advantageously taken off and supplied to the control electronics 72 for consideration.
  • the anilox rollers 54 are each tempered individually by a number of I own controllable temperature control circuits KRW short cycle KRW, which are connected to the two circuits K1 and K2. This has the background that hereby for each individual screen roller 54, the amount of ink to be transported is adjustable for itself.
  • the temperature control circuits KRW of two anilox rollers 54 of a double pressure point are connected to one another via lockable ByPass lines. For this corresponding valves 84 are provided.
  • the treatment is controlled for example by the associated metering valve 79 in response to the measured value m1 of this circuit KAN directly behind the feed and / or the measured value m5 in the return. Since no heating is required here, the temperature control circuit KAN is only connected to a supply circuit K3.
  • the supply and discharge lines in the region of their refrigeration device 77 far end are preferably connected to each other via at least one Byepass line which can be opened or closed by means of switchable valves 85.
  • this valve 85 can be opened to a sufficient fluid flow maintain and thus maintain a properly tempered temperature control in the supply line for the circuits KFZ and KRW.
  • two or more Byepass line per cycle K1; K2 with valves 85 different flow cross sections or per circuit with respect. Its flow rate controllable valve 85 can be used.
  • the circulating amount can be adjusted as needed graded.
  • At least a small amount of temperature control agent always circulates in the circuit K2, so that the reaction time is as short as possible, if required, by a temperature control medium of appropriate temperature.
  • the pressure tower 73 is associated with the supply device 71 with control or regulating device 72.
  • each anilox roller 54 of the printing tower 73 has its own circuit KRW.
  • the form cylinders 43 belonging to the same double printing unit 62 have a common circulation motor vehicle in pairs.
  • All rotary drives M, in particular mechanically independent drives M, the anilox rollers 54 and form and transfer cylinder 43; 47 of a same side of the printing substrate 49 are connected to a common circuit K3.
  • 73 k 4 cycles of the motor vehicle
  • I 8 cycles KRW
  • m 2 cycles of KAN according to FIG Fig. 9
  • all form and transfer cylinders 43; 47 and anilox rollers 54 as drives M from each other mechanically independent drives, so that each circuit KAN a number of n 12 drives M are tempered.
  • the refrigeration control center 77 is provided to supply the printing press or the supply devices 71 with temperature control means of the second circuit K2 and advantageously also of the third circuit K3, the refrigeration control center 77 is provided.
  • the refrigeration unit 77 as in Fig. 11 shown, designed as a combination system, which two coupled cooling processes 86; 87, namely a first process 87 with a device 89, 90, 91, z. B. chiller 89, 90, 91, for generating compression refrigeration and a second process 86 with a device 88 for cooling by means of ambient or outdoor air.
  • the first process 87 is designed to cool a temperature control medium to a temperature level T k below the ambient or external temperature.
  • the processes 86; 87 are coupled to each other such that the two above-mentioned circuits K2; K3 through both processes 86; 87 can be supplied with cold.
  • This supply can, depending on the requirement of the requested temperature level T2; T3 of the relevant circuit K2; K3 optionally by one or the other process 86; 87 or in particular by combining the two processes 86; 87 done.
  • an intelligent controller 92 for providing the temperature control for the circuits K2; K3 provided with optimal use of the device 88 for cooling by ambient or outdoor air.
  • the second process 86 has, in a first coolant or fluid circuit 93, the means for cooling by means of ambient or fresh air, in short free-cooling device 88, which can be designed, for example, as a convection cooler with or without evaporator.
  • the energy exchange takes place by thermal contact between the fluid of the fluid circuit 93 and the ambient air and, in the case of additional spraying with water, moreover exploits the evaporation cold.
  • the free cooling device 88 is thermally on the output side via the fluid -. B. via a respective heat exchanger 94; 96 - to the circuits K2; K3 coupled.
  • the first process 87 is provided to remove the fluid of the disengaged substreams 108; 109 lower to a temperature level T k below ambient temperature and for reconnection in the circuits K2; To provide K3.
  • the first process 87 in a fluid circuit 101, z.
  • the means 89, 90, 91 for generating compression refrigeration which a compressor 89, z. B. as a compressor 89, a radiator 91, z. B. as a free cooling device 91, and a relief valve 90 has.
  • the device 89, 90, 91 or the first process 87 is thermally coupled behind the expansion valve 90 on the output side with the circuits K2 and K3.
  • the process 87 via the heat exchanger to substreams 111; 112 coupled to the remindspeisdung previously decoupled and then cooled fluids in the two circuits K2 and K3.
  • a memory 113 from which the partial streams 111; 112 are served and in which the decoupled substreams 108; 109 are led.
  • fluid can be continuously pumped out of the reservoir 113 through the heat exchanger 102 in a circuit via a pump 114 and, on the other hand, cooled fluid can be withdrawn as needed for feeding back into the circuits K2 and K3.
  • T3 should be able to be divided into two sub-streams, with one sub-stream again equal to the supply stream of the relevant circuit K2; K3 is fed while the other substream is brought into thermal contact with the first process 87 before, in this process 87, cooled fluid also enters the supply stream of the respective circuits K2; K3 is fed back.
  • the respective ratio between the currents 106 to 111 and 107 to 112 is set by the controller 92 and can basically from 0% to 100% to 100% to 0% of the feed stream 116 respectively set; 117, ie the feed stream 116; 117 may be provided from a mixture of the two partial streams 106 and 111 or 107 and 112 or else only from one of the partial streams 106 or 111 or 107 or 112.
  • a pump 95 may be provided in the supply stream 116 of the circuit K3.
  • the corresponding pump 95 may be provided in the supply device 71.
  • the controller 92 receives from a computing and / or control device 100 of the printing press setpoint temperatures T2 soll; T3 is intended for the temperature levels T2; T3 in the flow of the circuits K2; K3 and from a temperature sensor 118, the outside temperature T A.
  • the computing and / or control device 100 may be part or process of a machine control, a control center computer or else a process in another control device assigned to the printing press.
  • T3 is intended and the outside temperature T A is determined by the controller 92, the cooling strategy and only indicated signal connections, the resulting settings of the respective valve 103; 104, z. B. control valves 103; 104 (and possibly 97, 98) as actuators 103; 104 (97; 98).
  • T2 should ; T3 should , for. B.
  • T2 should be with a value between 10 ° C and 25 ° C and T3 should be described with a value between 24 ° C and 30 ° C, possible operating situations: If the outside temperature T A of the air, for example, at T A ⁇ about 5 ° C, the cooling or supply of the circuits K2 connected to the refrigerating device 77, ie the rollers 54 and cylinder 43, to a maximum of about 50% via the process 86, z. The cooling or supply of the connected circuits K3, ie the drives, takes place 100% via the free-cooling device 88. The supply flow 116 is 100% partial flow 106 fed.
  • the cooling or supply of connected to the refrigeration device 77 cycles K2 with increasing proportion of the chiller 89, 90, 91 and less and less on the free cooling device 88.
  • the cooling or supply of the connected circuits K3 can still 100% done via the free cooling device 88 when z. B.
  • a target temperature T3 is given by example of 24 to 30 ° C.
  • the cooling or supply of connected to the refrigeration device 77 circuits K2 z. B. exclusively via the chiller 89, 90, 91, the feed stream 117 in the circuit K2, for example, 100% of the partial flow 112.
  • the cooling or supply of the connected circuits K3 takes place to only part of the free cooling device 88 and another part via the chiller 89, 90, 91.
  • T3 should , in particular the setpoint temperature T2 soll , with the machine status of the printing press, in particular with the production speed V, vary.
  • Decisive for the generation of the setpoint T2 is , however, this lowest required setpoint temperature of all to be supplied by the refrigeration device 77 printing units 41 and their forme cylinder 43 and anilox rollers 54. Compliance with this lowest setpoint temperature must be ensured by the specification of the setpoint temperature T2 should .
  • this lowest setpoint temperature for the component 43 to be tempered changes; 54, so the setpoint temperature T2 should be raised by the computing and / or control device 100.
  • the above-mentioned threshold temperatures for the different cooling combinations may also shift upwards.
  • FIGS. 12 and 13 show two advantageous developments in which a part of the heat energy is recovered. These developments can be integrated individually or together in the above-mentioned temperature control.
  • the warm return, z. B. with a maximum temperature of 35 to 40 ° C, in particular about 38 ° C, from the circuit K3 for controlling the temperature of the drives M, for example via a fluid-gas heat exchanger 119, z. B. a heat exchanger heating coil, for direct air heating in winter operation.
  • second embodiment takes place using the Temperierstoffmaschinenders from the circuit K2 as a heat source for a heat pump 121.
  • the heat pump 121 is in a memory 122, a higher temperature level, for. B. reach 55 ° C than in the embodiment according to Fig. 12 However, it will be additional structural and energy expenditure required.
  • recovery concepts shown can also refer to the other source (K2 or K3) - eg in Fig. 12 on the return of K2 and in Fig. 13 on the return of K3.
  • the systems can also act as a source on the heat 63 (see Fig. 5 ) To fall back on.

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  • Engineering & Computer Science (AREA)
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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
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  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Developing Agents For Electrophotography (AREA)

Claims (29)

  1. Système pour régler la température de composants (43 ; 54 ; M) d'une machine à imprimer, au moyen d'un dispositif de refroidissement (77), fournissant, à une première sortie, un fluide de régulation de température, au moins d'un premier niveau de température (T2 ; T3) souhaité, pour un premier circuit d'alimentation (K2 ; K3) de fluide de régulation de température au composant (43 ; 54 ; M) dont la température doit être régulée, le dispositif de refroidissement (77) présentant un premier processus de refroidissement (87) avec un premier circuit de fluide (101), réalisé pour refroidir un fluide de régulation de température à un niveau de température Tk au-dessous de la température ambiante ou extérieure, caractérisé en ce qu'un accumulateur à fluide de régulation de température (76), susceptible de fonctionner indépendamment du dispositif de refroidissement (77), est prévu, fournissant un fluide de régulation de température d'un niveau de température (T1) souhaité, supérieur à la température ambiante, pour un circuit d'alimentation (K1) différent du premier circuit d'alimentation (K2 ; K3) de fluide de régulation de température au composant (43 ; 54 ; M) dont la température doit être régulée, pour obtenir son chauffage, et en ce qu'un dispositif de récupération de chaleur (66), exploitant l'énergie provenant de flux de chaleur (63 ; 68 ; 69) est réalisé de manière que de l'énergie, provenant du dispositif de récupération de chaleur (66), est recyclable dans l'accumulateur à fluide de régulation de température (76), à des fins de chauffage.
  2. Système selon la revendication 1, caractérisé en ce que le dispositif de refroidissement (77) comprend un deuxième processus de refroidissement (86), avec un dispositif (88) pour refroidir, au moyen d'air extérieur, un circuit de fluide (93) différent du premier circuit de fluide (101).
  3. Système selon la revendication 1, caractérisé en ce que le dispositif de refroidissement (77) est conçu pour fournir, à une deuxième sortie, un fluide de régulation de température, d'un deuxième niveau de température (T3 ; T2), différent du premier niveau de température (T2 ; T3), pour un deuxième circuit d'alimentation (K3 ; K2) de fluide de régulation de température au composant (M ; 43 ; 54) dont la température doit être régulée.
  4. Système selon la revendication 1, caractérisé en ce que le premier processus de refroidissement (87) comprend une machine frigorifique (89, 90, 91), pour produire du froid par compression.
  5. Système selon la revendication 2, caractérisé en ce que le dispositif (88) est réalisé sous forme de refroidisseur par convection, avec ou sans évaporateur.
  6. Système selon la revendication 2, caractérisé en ce que les deux processus de refroidissement (86 ; 87) sont couplés chacun, par l'intermédiaire d'au moins un échangeur de chaleur (94 ; 96 ; 102) thermiquement à un circuit d'alimentation (K2 ; K3) pour l'amenée de fluide de régulation de température, du niveau de température (T2, T3) souhaité, au composant (43 ; 54 ; M) dont la température doit être régulée.
  7. Système selon la revendication 3 ou 6, caractérisé en ce que, dans le circuit d'alimentation (K2 ; K3), peut être injecté, au choix, du fluide de régulation de température refroidi par le premier processus de refroidissement (87), ou du fluide de régulation de température refroidi uniquement par le deuxième processus de refroidissement (86), en tant que fluide de régulation de température ayant le niveau de température (T2 ; T3) souhaité.
  8. Système selon la revendication 3 ou 6, caractérisé en ce que, selon le niveau de température (T2, T3) souhaité, un mélange, composé d'un écoulement de fluide de régulation de température refroidi par le premier processus de refroidissement (87) et d'un écoulement de fluide de régulation de température refroidi uniquement par le deuxième processus de refroidissement (86), peut être produit et est susceptible d'être injecté, en tant que fluide de régulation de température, dans le circuit d'alimentation (K2 ; K3).
  9. Système selon la revendication 3 ou 6, caractérisé en ce que, dans le circuit d'alimentation (K2 ; K3), peut être injecté, au choix, du fluide de régulation de température refroidi par le premier processus de refroidissement (87), ou du fluide de régulation de température refroidi uniquement par le deuxième processus de refroidissement (86), ou mélange des deux, en tant que fluide de régulation de température ayant le niveau de température (T2 ; T3) souhaité.
  10. Système selon la revendication 7, 8 ou 9, caractérisé en ce qu'est prévue une soupape (103 ; 104), au moyen de laquelle est effectué, au choix, une injection et/ou un mélange des fluides de régulation de température, ou des écoulements de fluides de régulation de température.
  11. Système selon la revendication 7, 8 ou 9, caractérisé en ce que le flux de fluide de régulation de température, refroidi par le premier processus de refroidissement (87), est guidé de manière à être préalablement mis en contact thermique avec le deuxième processus de refroidissement (86), avant le contact avec le premier processus de refroidissement (87).
  12. Système selon la revendication 1, 2 ou 3, caractérisé en ce que le circuit d'alimentation (K2), guidant le fluide de régulation de température ayant le premier niveau de température (T2), est prévu pour régler la température de composants (43 ; 47 ; 54) réalisés sous forme de cylindres de groupes d'impression (43 ; 47) et/ou de rouleaux (54).
  13. Système selon la revendication 2 ou 3, caractérisé en ce que le circuit d'alimentation (K3), guidant le fluide de régulation de température ayant le deuxième niveau de température (T3), est prévu pour réguler la température de composants (M) réalisés sous forme d'entraînements (M) et/ou de régulateurs d'entraînement (M).
  14. Système selon la revendication 12, caractérisé en ce que plusieurs circuits de régulation de température (KFZ ; KRW), pour réguler la température de cylindres de groupes d'impression (43 ; 47) et/ou de rouleaux (54) avec un fluide de régulation de température, sont raccordés ou au choix sont susceptibles d'être raccordés au circuit d'alimentation (K2), guidant le fluide de régulation de température ayant le premier niveau de température (T2).
  15. Système selon la revendication 12, caractérisé en ce que, entre le dispositif de refroidissement (77) et le composant (43 ; 47 ; 54) est prévue une unité d'alimentation (71) alimentée, par le circuit d'alimentation (K2), en fluide de régulation de température ayant le premier niveau de température (T2) et alimentant, de son côté, plusieurs circuits de régulation de température (KFZ ; KRW), pour réguler la température de cylindres de groupes d'impression (43 ; 47) et/ou de rouleaux (54) avec un fluide de régulation de température.
  16. Système selon la revendication 1, caractérisé en ce que plusieurs circuits de régulation de température (KFZ ; KRW), pour réguler la température de cylindres de groupes d'impression (43 ; 47) et/ou de rouleaux (54) avec un fluide de régulation de température, sont raccordés ou au choix sont susceptibles d'être raccordés au circuit d'alimentation (K1), guidant le fluide de régulation de température ayant le niveau de température (T1) supérieur à la température ambiante.
  17. Système selon la revendication 3 ou 14, caractérisé en ce qu'un circuit de régulation de température (KFZ ; KRW), pour réguler la température de cylindres de groupes d'impression (43 ; 47) et/ou de rouleaux (54) par rapport au fluide de régulation de température à guider dans le circuit de régulation de température (KFZ ; KRW), est susceptible d'être couplé, au choix, à un premier ou à un deuxième circuit d'alimentation (K3 ; K2), par l'intermédiaire, chaque fois, d'au moins une soupape (78) pouvant être télécommandée.
  18. Système selon la revendication 1, caractérisé en ce que, entre l'accumulateur à fluide de régulation de température (76) et le composant (43 ; 47 ; 54) dont la température doit être régulée est prévue une unité d'alimentation (71) alimentée, par le circuit d'alimentation (K1), en fluide de régulation de température ayant le niveau de température (T1) supérieur à la température ambiante et alimentant, de son côté, plusieurs circuits de régulation de température (KFZ ; KRW), pour réguler la température de cylindres de groupes d'impression (43 ; 47) et/ou de rouleaux (54) avec un fluide de régulation de température.
  19. Système selon la revendication 15 ou 18, caractérisé en ce que les circuits de régulation de température (KFZ), pour l'ensemble des cylindres de groupes d'impression (43 ; 47 ; 54), dont la température doit être régulée, d'une unité d'impression comprenant plusieurs emplacements d'impression, sont alimentés au moyen de l'unité d'alimentation (71).
  20. Système selon la revendication 15 ou 18, caractérisé en ce que les circuits de régulation de température (KFZ), pour l'ensemble des cylindres de groupes d'impression (43 ; 47 ; 54), dont la température doit être régulée, d'une tour d'impression (73) comprenant au moins quatre emplacements d'impression doubles, sont alimentés au moyen de l'unité d'alimentation (71).
  21. Système selon la revendication 15 ou 18, caractérisé en ce que les circuits de régulation de température (KFZ), pour l'ensemble des cylindres de groupes d'impression (43 ; 47 ; 54), dont la température doit être régulée, d'une unité d'impression (73) comprenant plusieurs groupes d'impression (41) ou groupes d'impression doubles (62), sont alimentés au moyen de l'unité d'alimentation (71).
  22. Système selon la revendication 15 ou 18, caractérisé en ce que les circuits de régulation de température (KFZ), pour l'ensemble des cylindres de groupes d'impression (43 ; 47 ; 54), dont la température doit être régulée, d'une unité d'impression (73) comprenant au moins quatre groupes d'impression double (62), sont alimentés au moyen de l'unité d'alimentation (71).
  23. Système selon la revendication 15 ou 18, caractérisé en ce que les circuits de régulation de température (KFZ), pour l'ensemble des rouleaux (54), dont la température doit être régulée, d'une unité d'impression (73) comprenant plusieurs groupes d'impression (41 ; 62), sont alimentés au moyen de l'unité d'alimentation (71).
  24. Système selon la revendication 15 ou 18, caractérisé en ce que les circuits de régulation de température (KFZ), pour l'ensemble des rouleaux (54), dont la température doit être régulée, d'une unité d'impression (73) comprenant au moins quatre groupes d'impression double (62), sont alimentés au moyen de l'unité d'alimentation (71).
  25. Système selon les revendications 15 et 18, caractérisé en ce que, entre les circuits d'alimentation (K1 ; K2) et le circuit de régulation de température (KFZ; KRW) des cylindres de groupes d'impression (43 ; 47) et/ou des rouleaux (54), sont prévues des conduites et des soupapes (84), de manière que le circuit de régulation de température (KFZ ; KRW) puisse être alimenté, au choix, avec un fluide de régulation de température ayant le niveau de température supérieur à la température ambiante et provenant du circuit d'alimentation (K1), ou avec un fluide de régulation de température du circuit d'alimentation (K2), provenant du dispositif de refroidissement (77).
  26. Système selon les revendications 21 et 23 ou 22 et 24, caractérisé en ce que chaque rouleau (54) de l'unité d'impression (73) présente un circuit de régulation de température (KFW) pouvant être commandé de façon propre, et les cylindres de groupes d'impression (43), réalisés en tant que cylindres de forme (43), présentent chacun, par paire, un circuit de régulation de température (KFZ) pouvant être commandé de façon propre.
  27. Système selon la revendication 2, caractérisé en ce que le dispositif de refroidissement (77) présente une unité logique (92) conçue pour, en prenant en considération une information sur la température extérieure, opérer un choix sur la répartition d'une participation des deux processus de refroidissement (86 ; 87), lors de la fourniture du niveau de température (T2 ; T3) souhaité à la sortie.
  28. Système selon la revendication 27, caractérisé en ce que l'unité logique (92) est en liaison de signalisation pour transposer la répartition à l'aide de moyens de réglage (103 ; 104), en particulier des soupapes (103 ; 104) pouvant être commandées
  29. Système selon la revendication 27, caractérisé en ce que l'unité logique (92) du dispositif de refroidissement (77) est en liaison de signalisation avec un dispositif de calcul et/ou de commande (100) de la machine à imprimer, dont une température de consigne T2consigne ; T3consigne, déterminée dans le dispositif de calcul et/ou de commande (100), pour le niveau de température (T2 ; T3) souhaité, est susceptible de lui être transmise.
EP07111579A 2005-01-05 2005-12-30 Système pour régler la température des éléments d'une machine d'impression Not-in-force EP1870238B1 (fr)

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DE102005000856 2005-01-05
DE102005005303A DE102005005303A1 (de) 2005-01-05 2005-02-04 Systeme zur Temperierung von Bauteilen einer Druckmaschine
EP05825282A EP1833676B1 (fr) 2005-01-05 2005-12-30 Systemes permettant de porter des parties structurales d'une presse d'imprimerie a la temperature adequate

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DE102004044215B4 (de) 2004-05-25 2008-03-13 Koenig & Bauer Aktiengesellschaft Verfahren zur Einstellung einer Übertragung von Druckfarbe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010029023A1 (fr) 2008-09-15 2010-03-18 Koenig & Bauer Aktiengesellschaft Unité d’impression et dispositifs et procédés de régulation de la température d’une unité d’impression
DE102008042090A1 (de) 2008-09-15 2010-03-25 Koenig & Bauer Aktiengesellschaft Vorrichtungen und Verfahren zur Temperierung einer Druckeinheit

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EP1870238A1 (fr) 2007-12-26
US20080017061A1 (en) 2008-01-24
RU2007129797A (ru) 2009-02-20
ES2309976T3 (es) 2008-12-16
RU2365509C2 (ru) 2009-08-27
WO2006072559A1 (fr) 2006-07-13
CN101648453A (zh) 2010-02-17
DE502005005159D1 (de) 2008-10-02
US8272324B2 (en) 2012-09-25
WO2006072558A1 (fr) 2006-07-13
ES2307228T3 (es) 2008-11-16
CN101142084A (zh) 2008-03-12
EP1833676A1 (fr) 2007-09-19
DE502005004320D1 (de) 2008-07-10
US20080041258A1 (en) 2008-02-21
US7523706B2 (en) 2009-04-28
DE102005005303A1 (de) 2006-07-13
ATE396868T1 (de) 2008-06-15
EP1833676B1 (fr) 2008-05-28
ATE405419T1 (de) 2008-09-15
CN101648453B (zh) 2011-06-01
DE202005021656U1 (de) 2009-03-12
CN101142084B (zh) 2010-05-05

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