EP2956305B1 - Dispositif de séchage, système présentant un dispositif de séchage ainsi que procédé de fonctionnement d'un dispositif de séchage pour le séchage entre mécanismes d'encrage dans une presse - Google Patents

Dispositif de séchage, système présentant un dispositif de séchage ainsi que procédé de fonctionnement d'un dispositif de séchage pour le séchage entre mécanismes d'encrage dans une presse Download PDF

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Publication number
EP2956305B1
EP2956305B1 EP13783922.1A EP13783922A EP2956305B1 EP 2956305 B1 EP2956305 B1 EP 2956305B1 EP 13783922 A EP13783922 A EP 13783922A EP 2956305 B1 EP2956305 B1 EP 2956305B1
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EP
European Patent Office
Prior art keywords
substrate
drying
air
unit
drying device
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.)
Active
Application number
EP13783922.1A
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German (de)
English (en)
Other versions
EP2956305A1 (fr
Inventor
Andreas Ihme
Frank Westhof
Martin Krümpelmann
Frank Gunschera
Dietmar Pötter
Markus BAUSCHULTE
Moritz KOPLIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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Publication of EP2956305A1 publication Critical patent/EP2956305A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B41F23/0463—Drying sheets, e.g. between two printing stations by convection
    • B41F23/0466—Drying sheets, e.g. between two printing stations by convection by using heated air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F3/00—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed
    • B41F3/46—Details
    • B41F3/52—Apparatus for cooling, heating, or drying printing surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0423—Drying webs by convection
    • B41F23/0426—Drying webs by convection using heated air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B41F23/0463—Drying sheets, e.g. between two printing stations by convection

Definitions

  • the invention relates to a drying device for an intermediate inking unit drying a printing press and a system with said drying device. Furthermore, the invention relates to a method for operating said drying device.
  • drying devices between the inking units of a printing press in order to dry the colorant applied to the substrate.
  • drying performance of the drying device is adjusted by an operator of the printing press.
  • the drying device may be equipped in a possible embodiment with a fan, the air in Direction substrate during drying feeds. It is known from the prior art that the operator can set the blown air speed and / or the blown air temperature individually.
  • the air supply used for drying is also used to remove / dilute the solvent vapors.
  • the DE 10 2010 046 756 A1 discloses a drying apparatus of a printing press, wherein the substrate is transportable via a feeding device and printable with a colorant.
  • An air supply unit serves to supply air in the direction of the substrate in order to effect a drying of the colorant.
  • a suction unit for removing the air is provided.
  • the drying device has two nozzle units for blowing heated blown air onto the surface of the material to be dried.
  • the nozzle unit has a fan, which is connected via a control line to a central control unit. The fan is used to compress the blowing air, which emerges from the nozzle unit.
  • the object of the present invention is to avoid the abovementioned disadvantages, in particular to provide a drying device, a system with a drying device and a method for operating a drying device, so that significant energy savings in operating the drying process can be achieved while ensuring high print quality ,
  • a drying device for an intermediate inking unit drying of a printing press in which a substrate can be transported via rotating cylinders and can be printed with colorant, wherein the drying device is an air supply unit for supplying air toward the substrate to effect drying of the colorant.
  • the drying device according to the invention has a suction unit for discharging the air, wherein according to the invention a control unit is provided which controls the air supply unit in such a manner depending on operating parameters and / or regulates that changing drying zones are adjustable on the substrate. It is particularly advantageous that the control unit can set and change the forming drying zones individually from the printed image on the substrate. Between each inking unit of the printing press, a drying device is advantageously provided.
  • the operating parameters can be variables that are already stored within the printing machine, in particular the drying device.
  • the invention likewise includes operating parameters which are determined and / or measured and / or calculated during operation of the printing press, in particular the drying device.
  • a combination of the just mentioned operating parameters is also conceivable.
  • the printing machine it may be z. B. to act a flexographic printing machine, in the present invention, the energy consumption on the automatic adjustment of the drying zones can be significantly reduced, at the same time effectively contained in the colorant solvent such. As ethanol, etc. can be effectively removed from the substrate.
  • the drying device automatically adjusts the drying performance in response to the print image defined by the colorant on the substrate.
  • an intelligent drying control can be created, which automatically sets different drying zones between each inking unit of the printing press.
  • the air supply unit and / or the suction unit is intelligently controlled and / or regulated so that too high a selected setting or too low selected setting the dryer performance is almost impossible, whereby the energy consumption of the drying device according to the invention during drying or during operation of the Printing machine is optimized.
  • the air supply unit has movable flaps, whereby a changing flow direction for the exit of the air from the air supply unit can be achieved is.
  • the width of the air supply unit substantially corresponds to the width of the substrate.
  • the width of the air supply unit is individually adjustable according to the width of the substrate to be transported. This applies correspondingly to the suction unit, which can be arranged with the air supply unit in a common component.
  • the flaps are controlled according to the invention via the control unit and / or controlled, wherein one or more flaps can also be completely closed, so that at these points no air can flow from the drying device in the direction of the substrate.
  • the flow direction of the air can be adjusted individually, whereby different drying zones are established between the substrate and the drying device, in particular the air supply unit and / or the suction unit.
  • the invention also includes that the distance between the substrate and the drying device is adjustable, which can be determined via the said operating parameters.
  • a system is proposed with a drying device for intermediate inking unit drying of a printing press, in which a substrate can be transported via rotating cylinders and can be printed with colorant, wherein a printed image can be applied to the substrate via the colorant.
  • the system includes an air supply unit for supplying air toward the substrate to effect drying of the colorant.
  • the system comprises a suction unit for removing the air and a measuring unit, with which at least a part of operating parameters during operation of the printing press and / or the drying device can be determined.
  • a control unit is provided which, depending on operating parameters, controls and / or controls the air supply unit and / or the suction unit in such a way that changing drying zones can be set on the substrate.
  • the measuring unit may have an optical sensor whose measuring range is directed to the substrate and / or at least one cylinder, wherein in particular the optical sensor is a camera unit and / or a sensor for detecting the gloss level of the applied colorant.
  • One or more operating parameters can be measured or determined via the optical sensor, as a result of which the drying zone and / or drying zones can be set between the inking units.
  • the optical sensor can, for. B. be a line camera.
  • the optical sensor can determine information about the printed image on the substrate, the size of the printed area on the substrate.
  • the degree of printing of the printed image can be determined via the optical sensor, wherein the degree of printing is determined by the density of the raster dots present on the printed image.
  • the Printed image has a coarse grid or a fine grid, whereby the color of the printed image is adjustable.
  • the definition of the degree of printing is for example comparable to the pixel resolution in the monitor.
  • the optical sensor can be aimed directly at the substrate in order to obtain direct information regarding the printed image, this information serving as operating parameters for setting the drying zones. It can likewise be provided that the optical sensor is directed onto one of the cylinders, for example onto a format cylinder and / or onto an anilox roller of the printing press, so that information can also be derived from the printed image on the substrate in this embodiment as well
  • the control unit is used to individually set drying zones on the substrate.
  • the printing machine is associated with at least one ink container, in which the colorant can be introduced, wherein the ink container has an identification unit from which a color recipe code is read out, which serves as operating parameters for the control unit, in particular that the identification unit an RFID Chip, in which the color recipe code is stored.
  • an identification unit for the substrate may be provided, which is arranged in particular on a support of the substrate or which is arranged in or on the substrate, wherein a substrate code can be read out of the identification unit.
  • the substrate as such can also be a major influencing factor for adjusting the drying performance.
  • the color recipe code and the substrate code can be automatically read out during operation of the printing press and transmitted to the drying device according to the invention, which then performs an automatic adjustment of the drying performance.
  • the measuring unit can be arranged in the suction unit, whereby the air sucked from the substrate can be analyzed.
  • the measuring unit can measure the air with respect to the solvent, which can then be closed to the color recipe, which is an operating parameter for the control unit.
  • a gas chromatograph determines the solvent contained in the air.
  • the printing press has a plurality of inking units, wherein each inking unit is associated with a drying device.
  • each Drying device can be made of different modules, each of which in turn can individually for itself have an air supply unit and a suction unit.
  • the printing machine may be formed with a drying system having a plurality of drying devices, each of which performs the drying operation of the colorant applied to the substrate between two inking units.
  • the resulting waste heat of the printing press of the drying device provides.
  • This waste heat can be made available to the air supply unit, from which a defined volume flow with a corresponding temperature is produced, which flows in the direction of the substrate for the drying process.
  • a further advantage of the invention results when a heat exchanger is provided, which provides waste heat of the printing machine of the drying device, in particular the air supply unit available. By a corresponding increase in the temperature, there is an increase in the supply of heat into the air, which is blown through the air supply unit in the direction of the substrate, whereby the drying can be accelerated.
  • a heat exchanger By using a heat exchanger, the energy consumption of the system according to the invention can be further optimized.
  • the drying device has an air supply unit for supplying air in the direction of the substrate in order to effect a drying of the colorant.
  • the drying device comprises a suction unit for removing the air and a measuring unit, with which at least a part of operating parameters during operation of the printing press is determined.
  • a control unit is provided, which controls and / or regulates the air supply unit in dependence on operating parameters in such a way that changing drying zones are adjustable on the substrate.
  • each drying device which is arranged between each two inking units, individually a drying zone can be formed on the substrate in order to achieve targeted drying of the printed image or the colorant on the substrate, which evaporate solvent through the drying process and are removed by the suction unit.
  • the energy expenditure for operating the drying device can be kept minimal in a targeted manner, since the control unit can control the drying capacity as a function of operating parameters.
  • each drying device can be operated with different drying powers, since each inking unit uses different colorants and different print images, different sizes of the printed images, different layer thicknesses in the colorant application and / or different printing grades arise, which are taken into account via operating parameters To set optimal drying zones on the substrate between each inking unit.
  • the drying device can be controlled, in particular the air supply unit and / or the suction unit can be controlled.
  • the measuring unit can determine, for example, the layer thickness of the ink application of colorant and / or the printed surface of colorant and / or the degree of printing, which are used as operating parameters to adjust the drying zones on the substrate and ultimately to determine the drying performance of the drying device between each inking unit.
  • the measuring unit determines the print motif on the format cylinder and / or on the cliché of the format cylinder and uses this to create digital data which are used as operating parameters for controlling the drying device.
  • the said operating parameters can be determined or measured, for example, directly via the measuring unit according to the invention during operation of the printing press. It is also possible that the measurement of defined variables with the aid of the measuring unit calculates a part of the operating parameters mentioned or is determined via databases stored in the system according to the invention.
  • the control unit regulates the air supply unit and the suction unit via the operating parameters. This means that, inter alia, the volumetric flow of the air which is responsible for the drying process is adjusted accordingly, whereby an air temperature control can also be incorporated to achieve satisfactory drying of the colorant.
  • control unit may be designed such that the transport speed is reduced to a defined speed at which the print image can still be dried just before it gets into the next particular inking unit.
  • inventive method can be carried out such that the drying device is operated in a recirculation method or operated in a recirculation method with a switchable fresh air process.
  • the location and size of the colorant application and / or the degree of gloss and / or the drying speed are determined on the substrate and / or on a format cylinder and / or an anilox roller of the inking unit of the printing press, wherein in particular the location and the Size of the ink application and / or the drying rate on the reflection of light on the surface of the format cylinder and / or the anilox roller is determined.
  • the gloss level can be measured for example via an optical sensor.
  • the optical sensor can determine the gloss level via the reflection of light on the colorant surface on the anilox roller and / or on the format cylinder.
  • the drying speed in turn represents an operating parameter which determines the drying capacity of the drying device, which means that based on the drying speed, the drying device adjusts the volume flow, temperature of the air leaving the air supply unit in the direction of the substrate and discharged again by the suction unit.
  • the drying device can be operated in a pure recirculation method. It is also conceivable that the drying device is operated in a recirculation method with a switchable fresh air process. It should be noted that in the pure recirculation method, the air can accumulate steadily with the solvent during drying, with a higher proportion of solvent in the air, the removal of the solvent from the colorant is deteriorated, whereby the actual drying rate of the substrate is reduced. Thus, it may be useful to mix a defined proportion of fresh air to reduce the concentration of the solvent in the circulating air. The disadvantage may be that, depending on the temperature of the fresh air, the circulated air is in turn to be heated in order to achieve a desired drying performance on the substrate.
  • the drying device has a temperature sensor and a measuring unit which can determine the proportions of solvent in the air.
  • the method according to the invention in particular the intelligent control unit for controlling and regulating the individual drying devices, can calculate the weighted average of the measured and the determined values of the printed area and / or the degree of printing.
  • the value of the printed area may be compressed to about 60% from the measured value and about 40% from the value determined for the image file to a value.
  • the area of the substrate which is dried by the drying apparatus can be limited to the area for drying which has been printed in the preceding inking unit or the preceding inking units. If, for example, only the right and the left edge of the substrate are printed in the preceding inking unit (s), the air supply unit of the subsequent drying apparatus can only be used on be active right and left edge.
  • a measuring unit can be provided for this purpose, which determines the size and location of the printed image on the substrate previously and tells the control unit.
  • image data of the cliché of the format cylinder can serve as operating parameters, in particular in order to determine the location and the size, in particular the printed image on the substrate, which is effected by a colorant application.
  • FIGS. 1.1 to 1.3 in each case a printing press 1 according to the invention is shown, which is formed from a plurality of inking units 7.
  • inking units 7 In the illustrated figures, five inking units 7.1 to 7.5 are shown by way of example, wherein the number of inking units 7 may vary without further ado, which does not concern the essence of the invention.
  • each inking unit 7 is composed of an anilox roller 3.1 and a format cylinder 3.2, wherein the anilox roller 3.1 receives the colorant 4 from a paint container 31.
  • the printing machine 1 may have further structural configurations with regard to the type of rotating cylinder, the number of cylinders, etc.
  • a drying device 10 according to the invention is arranged between the inking units 7, which is controlled in dependence on operating parameters such that changing drying zones 13, as shown in FIG FIG. 8 are shown by way of example, set on the substrate 2, which will be discussed below.
  • the drying device 10 As in FIG. 2 . FIG. 3 . FIG. 7 and FIG. 8 is particularly clear, the drying device 10, an air supply unit 11 and a suction unit 12, which are integrated in the present embodiment in an assembly.
  • the air supply unit 11 causes a supply of air 5 in the direction of the substrate 2 in order to achieve a targeted drying of the colorant 4 on the substrate 2.
  • the air supply unit 11 has a feed channel 15, which runs centrally to the suction unit 12, which is responsible for removing the air 5.
  • the air supply unit 11 has a feed channel 15 and the suction unit 12, in contrast, is designed with two suction channels 16 spaced apart from one another, the feed channel 15 extending between the suction channels 16. During drying, evaporation of the solvent contained in the printed image occurs.
  • the air 5 accumulates with the solvents, which are sucked off via the suction unit 12.
  • the drying device 10 has a control unit 20 which, depending on operating parameters B, controls and / or regulates the air supply unit 11 and / or the suction unit 12 in such a way that corresponding drying zones are obtained with respect to the applied print image after each inking unit 7 13 are formed in order to achieve an optimized and selective drying on the substrate 2 between the respective inking units 7.
  • the energy consumption during operation of the printing press 1 can be considerably reduced, in particular because unprinted areas on the substrate 2 experience no or little drying by the drying device 10.
  • the air supply unit 11 and the suction unit 12 are aligned transversely to the transport direction of the substrate 2.
  • the drying device 10 which is composed of air supply unit 11 and suction unit 12, formed rod-like.
  • the width of the transport device 10 may be greater than the width of the substrate 2, which in FIG. 2 is illustrated.
  • the air supply unit 11 has movable flaps 14, whereby different drying zones 13 can be set via the respective position of the flaps 14.
  • the drying device 10 a plurality of modules 30.1, 30.2, 30.3, each having an air supply unit 11 and a suction unit 12 individually.
  • the modules 30.1, 30.2, 30.3 can be controlled individually so that the volume flow and / or the temperature and / or the flow direction of the exiting air 5 in the direction of the substrate 2 of each module 30.1, 30.2, 30.3 is adjustable.
  • a part of said operating parameters B via a measurement according to reference numeral 50 (FIG. FIG. 9 ) be determined.
  • a measuring unit 40 may be provided, which is designed, for example, with an optical sensor 41.
  • the measuring unit 40 is according to Figure 1.1 directed to the substrate 2 between two inking units 7.
  • This measuring unit 40 can determine the location and the size of the colorant application on the substrate 2, which also in FIG. 7 is shown schematically.
  • this information is transmitted to the control unit 20, which then adjusts the drying apparatus 10 with respect to the drying capacity L.
  • the temperature of the air 5 flowing in the direction of the substrate 2 is set and / or regulated within the drying device 10.
  • FIG. 8 schematically shows that the system according to the invention can be carried out with a heat exchanger 35, which provides the waste heat generated in the printing machine 1 of the drying device 10 and the air supply unit 11.
  • the measuring unit 40 can visually check the surface of the format cylinder 3.2 and / or the surface of the anilox roller 3.1, which in Figure 1.2 or. Figure 1.3 is shown.
  • the control unit 20 undertakes a corresponding control and regulation of the drying apparatus 10.
  • FIG. 6 It is conceivable on the basis of a measurement of the reflection of light on the color surface of the anilox roller 3.1 and / or the format cylinder 3.2 to determine the drying speed of the colorant 4.
  • the measuring unit 40 according to Figure 1.2 or. Figure 1.3 determines the reflection of the light, wherein now different drying speeds can be estimated by the control unit 20 based on already existing measurement curves.
  • FIG. 6 By way of example, three measuring points lying substantially one above the other are shown. The upper measuring point is on a drying function, which is associated with a slow drying rate. The middle drying function provides one Normal drying rate. The lower drying function represents a high drying speed. Since the operating parameter of the drying rate is also a significant factor for influencing the drying performance to be set of the drying apparatus 10, it may be useful to include operating parameters according to the invention in the selective energy supply for the drying process.
  • the degree of printing, the degree of gloss and / or the layer thickness of the ink application of the colorant 4 on the substrate 2 can be determined via the measuring unit 40, which as described above can be essential operating parameters B for determining the drying capacity L.
  • a solvent content of the air 5 in the suction unit 12 can be determined via the measuring unit 40, whereby, for example, the drying rate and / or the required drying capacity L of the drying apparatus 10 can be determined.
  • each ink container 31 of each inking unit 7 has an identification unit 32, from which a color recipe code is read out, which serves as the operating parameter B for the control unit 20.
  • the identification unit 32 may include an RFID chip by storing the color recipe code.
  • An identification unit may also be provided for the substrate 2 in the system according to the invention, for example, as may be arranged on a support of the substrate 2, in particular on its winding.
  • the identification unit can also be arranged directly in or on the substrate 2, wherein a substrate code can be read out of the identification unit, which the control unit 20 receives for taking into account the drying power L.
  • the measuring unit 40 which is associated with the format cylinder 3.2, is movable and / or pivotable, so that in another position, the measuring unit 40 may also be directed to the substrate 2 and thus to the printed image or can also assume a position in which the anilox roller 3.1 can be optically analyzed and / or monitored.
  • the color recipe code can be read out via the identification unit 32 and transmitted to the control unit 20.
  • the procurement of the necessary operating parameters can thus according to the described method 50, 51, 52 from FIG. 9 respectively.
  • the input of operating parameters may, for. B. via a not explicitly shown interface by the operator of the printing machine 1 done.
  • the control unit 20 optimally adjusts the respective drying device 10 in order to selectively and energy-optimizedly dry the substrate 2 via the changing drying zones 13.
  • FIG. 5 is essentially the embodiment according to Figure 1.3 in which the drying device 10 is directed onto the substrate 2 and at the same time the measuring unit 40 analyzes the surface of the anilox roller 3.1, as already described above.
  • the optical inspection of the surface of the anilox roller 3.1 can take place via a reflection sensor, gloss sensor or via a camera unit, in particular a number camera.
  • each drying device 10 an individual determination of the drying power L, so set 7 different drying zones 13 between the inking units.
  • the drying zones 13 according to FIG. 8 may vary, meaning that the number of drying zones may increase or decrease, or the size of the drying zones may also vary. This depends on the above-mentioned operating parameters, in particular the location and size of the colorant application, the layer thickness of the ink application, degree of printing, the color formulation of the colorant 4, the material of the substrate 2, the solvent content of the colorant 4, the transport speed of the substrate 2, etc.
  • the drying capacity L which is to be set for each drying device 10
  • control unit 20 is arranged centrally in and / or on the printing press or in one of the drying devices 10, which determines the required drying power L for all drying devices 10. It is also conceivable that the measuring unit 40 and the drying device 10 are integrated in a common component.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (14)

  1. Dispositif de séchage (10) pour un séchage intermédiaire de dispositifs d'encrage, qui peut être disposé entre des dispositifs d'encrage d'une imprimante (1), dans lequel un substrat (2) peut être transporté par l'intermédiaire de cylindres rotatifs (3.1, 3.2, 3.3) et peut être imprimé avec des encres (4), avec une unité d'alimentation en air (11) pour l'introduction d'air (5) en direction du substrat (2), afin de provoquer un séchage de l'encre (4),
    une unité d'aspiration (12) pour l'évacuation de l'air (5),
    une unité de contrôle (20) qui commande et/ou régule l'unité d'alimentation en air (11) en fonction de paramètres de fonctionnement (B) de façon à ce que des zones de séchage variables (13.1, 13.2, 13.3) puissent être réglées sur le substrat (2), l'unité d'alimentation en air (11) comprenant des clapets mobiles (14) qui permettent d'obtenir une direction d'écoulement variable pour la sortie de l'air (5) hors de l'unité d'alimentation en air (11),
    le paramètre de fonctionnement (B) étant au moins une des grandeurs suivantes :
    - lieu et taille de l'application de l'encre sur le substrat (2) et/ou sur le cylindre ;
    - vitesse de séchage de l'encre (4) ;
    - épaisseur de couche de l'application de l'encre sur le substrat (2) ;
    - degré d'impression ;
    - degré de brillance de l'application d'encre sur le cylindre (3.1) et/ou sur le substrat (2) ;
    - part de solvant dans l'air (5) dans l'unité d'aspiration (12) ;
    - vitesse de transport du substrat (2) ;
    - température de l'air (5) dans l'unité d'aspiration (12).
  2. Dispositif de séchage (10) selon la revendication 1,
    caractérisé en ce que
    l'unité d'alimentation en air (11) est orientée transversalement par rapport à la direction de transport du substrat (2), plus particulièrement l'unité d'alimentation en air (11) étant conçue sous la forme d'une barre.
  3. Dispositif de séchage (10) selon la revendication 1 ou 2,
    caractérisé en ce que
    plusieurs modules (30.1, 30.2, 30.3) sont prévus, qui comprennent chacun une unité d'alimentation en air (11) et une unité d'aspiration (12), les modules (30.1, 30.2, 30.3) pouvant être contrôlés individuellement par l'unité de contrôle (20), plus particulièrement le débit volumique et/ou la température et/ou la direction d'écoulement de l'air sortant (5) en direction du substrat (2) de chaque module (30.1, 30.2, 30.3) pouvant être réglés individuellement.
  4. Système avec une imprimante (1) et un dispositif de séchage (10) pour le séchage intermédiaire de dispositifs d'encrage de l'imprimante (1), dans lequel un substrat (2) peut être transporté par l'intermédiaire de cylindres rotatifs (3.1, 3.2, 3.3) et peut être imprimé avec des encres (4), avec une unité d'alimentation en air (11) pour l'introduction d'air (5) en direction du substrat (2), afin de provoquer un séchage de l'encre (4),
    une unité d'aspiration (12) pour l'évacuation de l'air (5),
    une unité de mesure (40), avec laquelle au moins une partie des paramètres de fonctionnement (B) peut être déterminée pendant le fonctionnement de l'imprimante (1) et
    une unité de contrôle (20) qui commande et/ou régule l'unité d'alimentation en air (11) en fonction de paramètres de fonctionnement (B) de façon à ce que des zones de séchage variables (13.1, 13.2, 13.3) puissent être réglées sur le substrat (2), l'unité d'alimentation en air (11) comprenant des clapets mobiles (14) qui permettent d'obtenir une direction d'écoulement variable pour la sortie de l'air (5) hors de l'unité d'alimentation en air (11),
    l'imprimante (1) comprenant plusieurs dispositifs d'encrage (7.1, 7.2, 7.3, 7.4, 7.5), un dispositif de séchage (10) correspondant à chaque dispositif d'encrage (7),
    le paramètre de fonctionnement (B) étant au moins une des grandeurs suivantes :
    - lieu et taille de l'application de l'encre sur le substrat (2) et/ou sur le cylindre ;
    - vitesse de séchage de l'encre (4) ;
    - épaisseur de couche de l'application de l'encre sur le substrat (2) ;
    - degré d'impression ;
    - degré de brillance de l'application d'encre sur le cylindre (3.1) et/ou sur le substrat (2) ;
    - part de solvant dans l'air (5) dans l'unité d'aspiration (12) ;
    - vitesse de transport du substrat (2) ;
    - température de l'air (5) dans l'unité d'aspiration (12).
  5. Système selon la revendication 4,
    caractérisé en ce que
    l'unité de mesure (40) comprend un capteur optique (41), dont la zone de mesure est orientée vers le substrat (2) et/ou vers au moins un cylindre (3.1, 3.2, 3.3), plus particulièrement le capteur optique (41) étant une unité de caméra et/ou un capteur pour la mesure de la brillance de l'encre (4) appliqué.
  6. Système selon la revendication 4 ou 5,
    caractérisé en ce que
    à l'imprimante (1) correspond au moins un réservoir d'encre (31), dans lequel l'encre (4) peut être introduite, le réservoir d'encre (31) comprenant une unité d'identification (32) dans laquelle peut être lu un code de recette d'encre, qui sert de paramètre de fonctionnement (B) pour l'unité de contrôle (20), plus particulièrement en ce que l'unité d'identification (32) comprend une puce RFID dans laquelle est enregistré le code de recette d'encre.
  7. Système selon l'une des revendications précédentes,
    caractérisé en ce que
    une unité d'identification est prévue pour le substrat (2), qui est disposée plus particulièrement sur un support du substrat (2) ou qui est disposée dans ou sur le substrat (2), un code de substrat pouvant être lu dans l'unité d'identification.
  8. Système selon l'une des revendications précédentes,
    caractérisé en ce que
    l'unité de mesure (40) est disposée dans l'unité d'aspiration (12), l'air (5) pouvant être aspiré hors du substrat (2) pouvant être analysé, et/ou en ce qu'un échangeur thermique (35) est prévu, qui met à la disposition de l'unité d'alimentation en air (11) la chaleur dégagée par l'imprimante (1).
  9. Procédé d'exploitation d'un dispositif de séchage (10) pour le séchage intermédiaire de dispositifs d'encrage d'une imprimante (1), dans lequel un substrat (2) est transporté par l'intermédiaire de cylindres rotatifs (3.1, 3.2, 3.3) et est imprimé avec des encres (4), avec
    une unité d'alimentation en air (11) pour l'introduction d'air (5) en direction du substrat (2), afin de provoquer un séchage de l'encre (4),
    une unité d'aspiration (12) pour l'évacuation de l'air (5),
    une unité de mesure (40), avec laquelle au moins une partie des paramètres de fonctionnement (B) peut être déterminée pendant le fonctionnement de l'imprimante (1) et
    une unité de contrôle (20) qui commande et/ou régule l'unité d'alimentation en air (11) en fonction de paramètres de fonctionnement (B) de façon à ce que des zones de séchage variables (13.1, 13.2, 13.3) puissent être réglées sur le substrat (2), le dispositif de séchage (10) étant commandé en fonction de l'encre (4) appliquée sur le substrat (2), plus particulièrement l'unité d'alimentation en air (11) et/ou l'unité d'aspiration (12) étant commandées, l'unité d'alimentation en air (11) comprenant des clapets mobiles (14) qui permettent d'obtenir une direction d'écoulement variable pour la sortie de l'air (5) hors de l'unité d'alimentation en air (11),
    le paramètre de fonctionnement (B) étant au moins une des grandeurs suivantes :
    - lieu et taille de l'application de l'encre sur le substrat (2) et/ou sur le cylindre ;
    - vitesse de séchage de l'encre (4) ;
    - épaisseur de couche de l'application de l'encre sur le substrat (2) ;
    - degré d'impression ;
    - degré de brillance de l'application d'encre sur le cylindre (3.1) et/ou sur le substrat (2) ;
    - part de solvant dans l'air (5) dans l'unité d'aspiration (12) ;
    - vitesse de transport du substrat (2) ;
    - température de l'air (5) dans l'unité d'aspiration (12).
  10. Procédé selon la revendication 9,
    caractérisé en ce que,
    au moins une partie des paramètres de fonctionnement (B) soit transmise par l'intermédiaire d'une interface du dispositif de séchage (10) et/ou de l'imprimante (1) et/ou en ce que le dispositif de séchage (10) fonctionne selon un procédé de circulation d'air ou selon un procédé de circulation d'air avec raccordement possible d'un procédé d'introduction d'air frais.
  11. Procédé selon la revendication 9 ou 10,
    caractérisé en ce que
    le paramètre de fonctionnement (B) est au moins une des grandeurs suivantes :
    - recette de l'encre (4) et/ou matériau du substrat (2) ;
    - température de l'air (5) dans l'unité d'alimentation en air (11).
  12. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    sur le substrat (2) et/ou sur un cylindre de format (3.2) et/ou sur un rouleau encreur (3.1) du dispositif d'encrage (7.1, 7.2, 7.3, 7,4, 7.5) de l'imprimante (1), le lieu et la taille de l'application de l'encre et/ou la brillance et/ou la vitesse de séchage sont déterminés, plus particulièrement le lieu et la taille de l'application d'encre et/ou la vitesse de séchage étant déterminés à l'aide de la réflexion de lumière sur la surface du cylindre de format (3.2) et/ou du rouleau encreur (3.1).
  13. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    les données d'image du cliché du cylindre de format (3.2) servent de paramètres de fonctionnement (B), plus particulièrement pour déterminer le lieu de l'application d'encre sur le substrat (2).
  14. Procédé selon l'une des revendications 9 à 13 pour l'exploitation d'un système selon l'une des revendications 4 à 8 et/ou pour l'exploitation d'un dispositif de séchage (10) selon l'une des revendications 1 à 3.
EP13783922.1A 2013-02-12 2013-10-29 Dispositif de séchage, système présentant un dispositif de séchage ainsi que procédé de fonctionnement d'un dispositif de séchage pour le séchage entre mécanismes d'encrage dans une presse Active EP2956305B1 (fr)

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DE102013101350.3A DE102013101350B4 (de) 2013-02-12 2013-02-12 Trocknungsvorrichtung, System mit einer Trocknungsvorrichtung sowie Verfahren zum Betrieb einer Trocknungsvorrichtung zur Zwischenfarbwerkstrocknung einer Druckmaschine
PCT/EP2013/072645 WO2014124711A1 (fr) 2013-02-12 2013-10-29 Dispositif de séchage, système présentant un dispositif de séchage ainsi que procédé de fonctionnement d'un dispositif de séchage pour le séchage entre mécanismes d'encrage dans une presse

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EP2956305A1 (fr) 2015-12-23
DE102013101350A1 (de) 2014-08-28
DE102013101350B4 (de) 2018-11-08
WO2014124711A1 (fr) 2014-08-21
US9840073B2 (en) 2017-12-12
ES2719494T3 (es) 2019-07-10
US20150367625A1 (en) 2015-12-24

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