EP3781404A1 - Machine de traitement équipée d'un sécheur à rayons et procédé de fonctionnement de ce sécheur - Google Patents

Machine de traitement équipée d'un sécheur à rayons et procédé de fonctionnement de ce sécheur

Info

Publication number
EP3781404A1
EP3781404A1 EP19719223.0A EP19719223A EP3781404A1 EP 3781404 A1 EP3781404 A1 EP 3781404A1 EP 19719223 A EP19719223 A EP 19719223A EP 3781404 A1 EP3781404 A1 EP 3781404A1
Authority
EP
European Patent Office
Prior art keywords
air
processing machine
radiation source
machine according
blown
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19719223.0A
Other languages
German (de)
English (en)
Other versions
EP3781404B1 (fr
Inventor
Maik Walter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Priority to EP22185084.5A priority Critical patent/EP4098447B1/fr
Publication of EP3781404A1 publication Critical patent/EP3781404A1/fr
Application granted granted Critical
Publication of EP3781404B1 publication Critical patent/EP3781404B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41F23/045—Drying sheets, e.g. between two printing stations by radiation
    • B41F23/0453—Drying sheets, e.g. between two printing stations by radiation by ultraviolet dryers
    • 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
    • B41F23/0406—Drying webs by radiation
    • B41F23/0409—Ultraviolet dryers
    • 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
    • B41F23/0483—Drying combined with cooling

Definitions

  • the invention relates to a processing machine with a drying device, in particular a printing or sheet-processing or substrate-processing machine, especially a printing press, and a method for operating a drying device in a processing machine.
  • Especially powerful drying devices with radiation dryers are usually cooled.
  • cooled for example, built in a UV module UV lamps on printing material processing machines, such as sheet-fed presses, cooled during operation.
  • a cooling of a UV lamp is also necessary at higher powers so that it does not reach the transformation temperature of the glass tube and thus sags or even blooms.
  • Exhaust air cooling systems are known for cooling UV lamps.
  • ambient air flows through an air inlet opening of the housing past the UV emitter, wherein the air inlet opening is at the same time the radiation outlet opening.
  • the disadvantage is that the UV emitter, resulting from the structural design, especially at the top is cooled.
  • the underside is generally much hotter, as there is not sufficient convection is achieved.
  • the heat dissipation at the bottom takes place in addition to heat radiation and heat conduction of the glass tube to the well-cooled top.
  • an irradiation device wherein the radiation source is rotatably arranged in the irradiation device in connection with a supply air cooling about its longitudinal axis.
  • a disadvantage of this solution is that it works with a supply air cooling and has trouble-prone moving parts and thus is complex and uneconomical.
  • a UV irradiation device wherein a first cooling air flow is sucked into the housing at the sides via air inlet openings of the outer wall in order to cool the sheet system from the outside.
  • the cooling air is conducted along the housing wall into a central suction channel and from there via a collector to a fan, which conveys the entire cooling air flow of the UV irradiation device.
  • a second cooling air flow is detected in the region of the radiation source by a long-necked suction channel and passed through a throttle in the collector.
  • a device for accelerating drying by means of an infrared radiator which generates heat.
  • An air generating system leads In doing so, air is at low temperature to reduce the temperature inside the housing.
  • an ultraviolet curing device with a UV radiation tube is known.
  • the distance of the reflectors to the radiator is set over the length of the radiator.
  • an air tube is used, which directs cooling air directly on the radiator.
  • the cooling air discharged from the air pipe is configured to increase in the amount when it is farther from a suction side.
  • the invention has for its object to provide an alternative processing machine with a drying device or an alternative method for operating a drying device in a processing machine.
  • the cooling of preferably high-performance dryers in processing machines, such as substrate or printing material processing machines to be improved.
  • the cooling of a UV emitter should also be further improved on the underside.
  • the invention has the advantage that an alternative processing machine with a drying device or an alternative method for operating a drying device in a processing machine is provided.
  • the cooling of a UV radiator on the underside is further improved.
  • the drying device is used in a sheet-processing or substrate-processing machine, especially a printing press, or such machine is equipped with one or more such drying devices.
  • the drying device can preferably also be used optionally as an intermediate dryer or as a final dryer, for example in a delivery.
  • a substrate can thereby tabular substrate, such as sheet metal, are processed. But it can also be processed roll or sheet material, in particular printed or painted, be.
  • An exhaust air cooling has the particular advantage that simultaneously produced by UV radiation ozone from the drying device, such as a UV module is sucked with.
  • ozone is harmful to humans, on the other hand ozone absorbs UV radiation and thus reduces the curing effect of the drying device, in particular the UV module.
  • a blast air system an improved air flow in the favored exhaust air cooling.
  • the ambient air in particular the ambient air located outside the drying device or contacting a printing material, is specifically guided by additional directed air and / or blowing air such that both the ambient air and the additional air or blown air are guided in an optimized manner around the radiation source as cooling air is, before the common cooling air removed as exhaust air through one or more air outlet openings, in particular extracted, is.
  • the radiation source can be cooled by unilateral or preferably bilaterally introduced air streams, for example blast air streams or blast air jets, indirectly and / or directly at the bottom, wherein the additional air, for example Blowing air is introduced or blown in particular outside the radiation range of a UV module.
  • the additional air for example Blowing air is introduced or blown in particular outside the radiation range of a UV module.
  • the radiation source in particular a UV emitter, can also be partially blown directly from below.
  • a blast air duct is parallel to or in the plane of the air inlet opening of the housing, so that the blowing device is not in the beam path of the radiation of the radiation source.
  • the blowing air is thus preferably generated at least approximately parallel to the web of processing material or a printing material web.
  • this air is improved or optimized as cooling air in the drying device, in particular in the UV module, transported to the bottom of the radiation source and thus better cooled their bottom.
  • the cooling is advantageously more turbulent and, surprisingly, the top of the radiation source is better cooled, which could be detected by investigations specifically based on temperature measurements.
  • the additional air or blowing air is introduced or blown over the entire length of a drying device, for example of the UV module, or the radiation source.
  • a drying device for example of the UV module, or the radiation source.
  • This can be done by air guide elements, such as sheets, and / or Blas Kunststoffö réelleen, in particular nozzles.
  • the air introduced or injected on both sides can be either a partial mass or at least approximately the entire cooling air discharged in the UV module.
  • the air volume flow of the air additionally introduced or injected through the blown air system can preferably be between 20% and 50% of the total cooling air volume flow. Accordingly, the proportion of inflowing ambient air between 80% and 50%.
  • the radiation sources in particular UV emitters
  • the air mass flow can be reduced.
  • bending or inflation of a UV emitter can be avoided more reliably.
  • the blast air system can be designed for placement on any UV module of a dryer.
  • the attachment module comprises in particular separate air guide elements or air ducts, which are provided for influencing or adjusting the ambient air volume flow around the radiation source.
  • An attachment module or additional module can be used in a simple way for retrofitting of dryers.
  • a disk spaced apart from the housing of the UV module could additionally be provided in the beam path of the radiation source as long as sufficient airflow flowing into at least one air inlet opening is ensured.
  • FIG. 1 shows a section of a delivery of a sheet-processing machine with a dryer arranged above a sheet conveying path and having three UV modules;
  • Fig. 2 sheet guiding cylinder arranged as an intermediate dryer
  • UV module 3: UV module of a dryer with a longitudinally extending UV
  • Fig. 6 Cross section of the UV module with alternative activated
  • Fig. 8 cross-section of the UV module with alternative blown air system
  • Fig. 9 elongated UV emitter with exclusively between
  • Fig. 10 elongated UV emitter for large format machines
  • Fig. 11 Alternative embodiment of a UV lamp.
  • processing machines such as printing material processing machines, in particular printing machines or sheet-processing machines, for example
  • Sheet-fed presses in particular sheet-fed rotary printing presses preferably in aggregate and series construction, substrates or printing materials are conveyed through the machine.
  • sheet-fed machines for example, printing material sheets of cylinders or even drums are gripped on the leading edge and conveyed or transported by the machine during the rotation of the cylinders. Between the cylinders, the printing material sheets are transferred in the gripper closure.
  • the printing materials pass through various printing units in the conveying path, in which they are printed according to the desired motif, each with one printing ink.
  • Each of the printing units can, for example, include a plate cylinder, which is inked by an inking unit with the ink used.
  • This inked plate cylinder transfers the ink motive to a provided with a rubber blanket cylinder, with a the printing material sheet-promoting printing cylinder of a sheet-fed press a nip forms.
  • the corresponding motif is transferred from the dyed blanket of the blanket cylinder to the printing material sheet.
  • the finished printed substrate sheets can be laid out in a delivery of a sheet-fed press to form an output stack.
  • the last printing unit can also be followed, for example, by one or more coating units which provide the printed printing material sheets with a protective varnish or gloss varnish.
  • coating units which provide the printed printing material sheets with a protective varnish or gloss varnish.
  • UV in the printing units or UV varnishes in the varnishing units may include a turning device.
  • a drying device or an intermediate dryer in the machine is designed in particular as a UV drying device and comprises, for example, one or more UV modules 1.
  • FIG. 1 shows, for example, a part of a delivery of a sheet-fed printing machine with a drying device arranged above a sheet conveying path, in particular with a dryer which has a plurality of UV modules 1.
  • the drying device may additionally comprise hot air dryers, among others.
  • the UV modules 1 are arranged in particular at a fixed distance to the sheet conveying path, so that the rotating gripper carriage 5 can move freely.
  • the sheet 4 can be performed on sheet guide plates 6, wherein between the sheet 4 and the sheet guide plates 6, an air cushion can be formed.
  • the UV modules 1 in the ascending branch of the circulating chains and / or in a Display extension be arranged.
  • a drying device may also be arranged below the sheet conveying path.
  • the sheets 4 are passed on the way to the delivery stack to the sheet 4 drying or curing UV modules 1.
  • the UV modules 1 each have UV emitters 2 whose UV radiation is directed directly or via reflectors 3 onto the surface of the sheets 4.
  • the treated sheet surface in particular the printed UV ink and / or the applied UV varnish, is dried or cured.
  • 1 mercury vapor lamps are used as radiation sources in the UV modules.
  • emitters with other wavelengths such. B. infrared dryer, are used.
  • insertion slots may be provided in the machine or display, in which the UV modules 1 can be inserted.
  • the UV modules 1 can be fixed in these slots insertion, whereby an interchangeability of the UV modules 1, z. B. wear of the UV lamp 2, is guaranteed.
  • the UV modules 1 work in particular with exhaust air cooling.
  • FIG. 2 shows a drying device, in particular a UV module 1, on a sheet guiding cylinder 7 of a sheet-processing machine, for example the sheet-fed printing machine described above.
  • the UV module 1 is assigned in particular as an intermediate dryer the sheet guiding cylinder 7 of a factory.
  • the sheet guiding cylinder 7 preferably contains gripper systems, which are designed in particular as a clamping gripper with gripper fingers and gripper clutches. The gripper fingers fix the sheet leading edge by a gripping movement on the gripper impacts, so that the sheet 4 is fixed for transport on the lateral surface of the rotating in the direction shown sheet guiding cylinder 7.
  • the UV module 1 can be arranged in a printing, coating, drying or processing work, etc. of the machine.
  • the UV module 1 in particular between printing units of the machine for drying a or more paints or varnishes, in particular UV inks or UV varnishes.
  • the intermediate dryer can be plugged into an insertion slot of the machine and thus designed to be interchangeable.
  • the UV modules 1 can be interchangeable between the insertion ducts of the intermediate dryer and the delivery. The executed as an intermediate dryer UV module 1 works in particular with exhaust air cooling.
  • FIG. 3 shows a UV module 1, which accommodates a longitudinally extending UV radiation source, in particular a gas discharge tube filled with mercury vapor, transversely to the conveying direction of the processing material, for example the printing material or sheet 4.
  • the UV module 1 may for example be associated with an insertion slot of the machine, which preferably also has electrical or pneumatic connections for the supply. The corresponding electrical or pneumatic connections can be provided, for example, in the insertion slot.
  • the UV module 1 is associated with a blown air system 13, which extends in particular over the maximum of the machine to be processed material width, for example, substrate width.
  • the blown air system 13 has an overpressure supply, which includes, for example, a positive pressure connection or preferably overpressure generator.
  • the overpressure generator can be designed as a fan, in particular as an axial fan 14, preferably distributed over the substrate width.
  • An electrical supply of fans, in particular axial fans 14, can be done separately or together with the UV module 1.
  • the UV module 1 On the side facing the processing material or printing material, the UV module 1 has an air inlet opening 10 for the ambient air, ie the air coming into contact with the substrate or printing material or in the beam path of the UV module 1.
  • the air inlet opening 10 is here in particular at the same time the radiation exit opening of the UV radiator 2 of the UV module.
  • 1 4 shows the cross section of the UV module 1 according to the section AA of the previous figure with deactivated blown air system 13.
  • the UV module 1 may in particular have a housing profile 8, in which preferably an exhaust duct 12 is arranged.
  • an extrusion profile of the UV module 1 may typically be made of aluminum.
  • the reflectors 3 installed in known shutters 9 reflect the radiation of the UV radiator 2 to the substrate or printing material.
  • the shutter 9 are preferably provided along the UV radiator 2 in the housing profile 8.
  • the shutters 9 are preferably movable and / or liquid-cooled.
  • the air inlet opening 10 of the housing profile 8 is closed. In operation, the shutter 9 are held accordingly in a position releasing the air inlet opening 10.
  • the ambient air which is sucked in between the shutters 9 or reflectors 3 and the UV emitter 2, flows through the air inlet opening 10 facing the substrate or printing material, thereby cooling the UV emitter 2.
  • the cooling air then flows in between the shutters 9 the exhaust duct 12 of the housing profile 8 from.
  • the exhaust duct 12 is preferably on one side with an example, controllable or controllable suction air source in combination, which sucks the exhaust air into the exhaust duct 12.
  • the exhaust duct 12 preferably extends over the entire length of the UV radiator 2, so that the air heated at the UV radiator 2 can be sucked through distributed openings in the exhaust air duct 12.
  • the exhaust air duct 12 extending along the radiation source, in particular of the UV radiator 2, to the space surrounding the UV radiator 2 via elongated holes spaced apart from one another.
  • the slots are preferably dimensioned such that they differ from each other in their opening areas.
  • the Opening surfaces of the slots between the ends of an elongated UV lamp 2 smaller dimensioned than the provided at the respective ends of the UV lamp 2 slots.
  • the opening surfaces of the oblong holes between the ends of the elongated UV radiator 2 in particular without local maxima to the suction air source of the exhaust duct 12 towards continuously smaller dimensioned.
  • the opening surfaces of the ends of the elongate UV radiator 2 associated slots are dimensioned to each other of different sizes, preferably the opening area of at least one elongated hole of the Saugluftquelle the exhaust duct 12 facing the end of the UV lamp 2 is dimensioned smaller than an opening area at least one elongated hole of the suction air source of the exhaust duct 12 facing away from the end of the UV lamp 2.
  • the respective ends of the UV lamp 2 facing slots may also include two, three or four slots.
  • the resulting in operation with activated exhaust air cooling and deactivated Blas Kunststoffsystem 13 air flows are shown here in principle or schematically.
  • cooling takes place primarily on the upper side of the UV radiator 2, while the underside directed towards the processing material is less cooled relative to the upper side.
  • a warm-up can take place.
  • This operating mode can furthermore be provided, for example, during operation, for example when the UV module 1 is operated at low power, in particular when the glass tube temperature is low, for example at a radiator output of less than 140 to 120 W / cm.
  • FIG. 5 shows the cross section of the UV module 1 with activated blown air system 13, here in particular the blown air system 13 that can be placed.
  • activated blown air system 13 here in particular the blown air system 13 that can be placed.
  • At least approximately orthogonal to the incoming through the air inlet opening 10 ambient air flow 11 is preferably on both sides of the air inlet opening 10 through Blas Kunststoffö Anlagen Maschinenen 16 each generates a blast air 17.
  • the blown air jets 17 can each be formed by individual blown air openings 16 or through continuous slot nozzles, which extend for example over the length of the radiation source, in particular at least between electrodes 19 of a UV radiator 2.
  • the gap formed by the blown air openings 16 can also be configured such that a setting for performance classes and / or adaptation to installation spaces or machines can be carried out, for example.
  • a gap of 1 mm to 10 mm, more preferably 2 mm to 6 mm, and very particularly preferably at least approximately 4 mm, which is opened by the blown air openings 16, is preferably set.
  • the blown air jets 17 generated by the blown air system 13 are in particular directed toward one another in such a way that they influence, in particular constrict or constrict, the ambient air flow 11 flowing into the housing profile 8.
  • the blast air jets 17 are preferably guided toward one another in such a way that they would preferably meet centrally to the air inlet opening 10, for example just below the UV emitter 2.
  • the influencing of the ambient air flow 1 1 is preferably carried out such that the ambient air flow 1 1, the processing material or substrate facing bottom of the UV radiator 2 cools with increased intensity.
  • a crossflow to the ambient air flow 11 is generated by the blown air system 13.
  • FIG. 6 shows a UV module 1 with an alternative blow air system 13 which can also be placed, for example.
  • the blow air system 13 likewise has one or more fans, in particular axial fans 14, which have an air inlet opening 10 facing the substrate or printing material in air ducts 15 Generate airflow.
  • the blown air system 13 here has blown air openings 16, which but the UV emitter 2 does not blow directly, but the incoming ambient air flow 1 1 still below the UV emitter 2 or even before reaching the UV emitter 2 constrict or constrict. Since the air ducts 15 or blast air openings 16 can at least partially sit in the beam path of the UV emitter 2, they can also be made of a radiation-transmissive material.
  • each at least one compressed air connection 18 is assigned to each transverse to the conveying direction of the processing material over the format width extending air duct 15, which acts on the respective air duct 15 with respect to the ambient pressure higher pressure. In the air duct 15, the overpressure can form over the format width and exit via the Blas Kunststoffö Maschinenen 16 as Blas Kunststoffstrahl 17.
  • FIG. 8 shows the cross section of the UV module 1 according to the section AA of the previous figure with the alternative blown air system 13.
  • the compressed air supplied via the respective compressed air connection 18 is distributed via the respective air duct 15 and passes through the blown air openings 16 in the region of Air inlet opening 10 of the UV module 1 off.
  • the blown air jets 17 can each be generated by individual blown air openings 16 or through continuous slit nozzles, which extend over the width of the processing material or printing material, for example.
  • the blast air jets 17 are aligned in particular in such a way to one another in a plane that they influence the flowing in the housing profile 8 ambient air flow 1 1, in particular constrict or constrict.
  • FIG. 9 shows an elongate UV emitter 2 designed by way of example as a mercury vapor lamp with cooling system or blowing air system 13 acting exclusively between electrodes 19.
  • the UV emitter 2 for example designed as a medium-pressure mercury vapor lamp, has the two ends arranged in a glass body 20 via one each Pin 21 contacted or energized electrodes 19.
  • the electrodes 19 can be driven, for example, by an integrated or external pilot control device.
  • Each of the two spaced-apart electrodes 19 lies at least partially in a plane E1, E2, which intersects the elongate UV emitter 2, for example the mercury vapor lamp, as an idealized common normal (as an orthogonal vector).
  • the planes E1, E2 are to be understood as idealized, mutually spaced parallel planes in space, wherein the surfaces of the electrodes 19, the planes E1, E2 at least touch.
  • a cooling region B of the cooling system or blown air system 13 is in particular located exclusively between the mutually facing the electrode surfaces spanning the planes E1, E2.
  • the cooling area B of the cooling system or blown air system 13 with a maximum cooling capacity is here preferably formed or limited by the two planes E1, E2.
  • the cooling system or blown air system 13 of the radiation source in particular of the UV radiator 2, in this case has a maximum cooling power exclusively in a cooling region B between the planes E1, E2 formed by the electrodes 19.
  • a constant cooling power is preferably generated over the entire cooling region B, with the cooling region B particularly preferably extending completely between the mutually facing surfaces of the electrodes 19.
  • the maximum cooling capacity in the cooling area B can however be controlled or regulated according to the desired requirement in terms of intensity or effect. Adjacent to the cooling region B, in particular outside the planes E1, E2, the cooling capacity of the cooling system or of the blown air system 13 is reduced or preferably zero relative to the maximum cooling power.
  • the glass body 20 in this case has a larger diameter compared to the edge regions.
  • the glass body 20 enclosing the electrodes 19 tapers, with the tapered ends of the glass body 20 in particular bearing the pins 21 for electrically contacting the electrodes 19.
  • the electrodes 19 are therefore preferably physically largely outside the cooling region B of the cooling system or blown air system 13.
  • This embodiment is particularly preferably used in medium-sized machines, such as sheet-fed presses.
  • medium format machines may process processing material at least approximately 1 meter wide.
  • FIG. 10 shows an alternative elongate UV emitter 2, which is particularly suitable for large-format machines.
  • Large-format machines such as sheet-fed presses, can, for example, process processing material with a width of more than 1 m, for example approximately 1, 4 m or 1, 6 m or even more.
  • the UV emitter 2 is characterized in that the planes E1, E2 intersect the tapered regions of the glass body 20. The maximum diameter of the glass body 20 is thus achieved only within the bounded by the planes E1, E2 cooling area B. This prevents, in particular with closed shutters 9, that the ambient air then flowing in laterally cools the electrodes 19 too much.
  • FIG. 11 shows an alternative embodiment of a UV emitter 2.
  • the glass body 20 tapers only outside the planes E1, E2.
  • the planes E1, E2 thus intersect the glass body 20 in the region of the maximum diameter.
  • the the cooling area B of Cooling system or blown air system 13 limiting levels E1, E2 but are also spanned here by the mutually facing surfaces of the electrodes 19 of the UV lamp 2.
  • air is preferably blown in on both sides, in particular outside the radiation region of the UV module 1.
  • This air preferably meets in the middle under the UV module 1, in particular approximately in the center of the UV emitter 2.
  • the constricted ambient air in the UV module 1 constricted by the blast air jets 17 is transported to the underside of the UV emitter 2.
  • the underside of the UV lamp 2 is strongly cooled.
  • the cooling becomes more turbulent overall and also the upper side of the UV radiator 2 is cooled better.
  • the additional air is introduced or blown exclusively between electrodes 19 of the UV radiator 2 or over the length of the UV module 1. This can be done by sheets and / or blowing air nozzles.
  • the preferably introduced on both sides or injected air may be either a partial mass or at least approximately the entire acting in the UV module 1 cooling air.
  • a proportion of 80% to 50% of the cooling air and of the air introduced through the blown air system 13 forms a proportion of 20% to 50% of the cooling air from the inflowing ambient air flow 11.
  • a proportion of 1/3 of air additionally introduced by the blown air system 13 or blown air 17 and a share of 2/3 of inflowing ambient air flow 1 1 is aimed at.
  • the UV lamp 2 can be operated with a power between about 80 W / cm and about 200 W / cm.
  • the blown air system 13 can be activated or switched in a performance-dependent manner.
  • the blown air system 13 can only be activated at an average power, for example at approximately 120 to 140 W / cm become.
  • the blown air system 13 can be completely deactivated below a radiator output of, for example, 120 to 140 W / cm.
  • the blown air system 13 may be activated.
  • the effect of the blown air system 13 can be increased with the radiator performance.
  • the effect of the blown air system 13 at a radiator output of 120 to 140 W / cm just use and up to a maximum radiator power of 200 W / cm preferably linear or function-dependent increased, so that the effect of the blown air system 13 at a radiator power of 200 W. / cm is 100%.
  • the blowing air can be adjusted in particular according to a characteristic field, which may have local maxima and / or minima, for example.
  • the blowing air can be adjusted depending on a curve, for example, between 120 W / cm and 200 W / cm.
  • a function for operating the blown air system 13 can be predefined and / or modified as a function of the radiator output, in particular depending on the machine.
  • the effect of the blown air system 13 can also be adjusted individually and / or also be executed controlled or regulated, for example, according to the radiator output.
  • the current radiator output can be known to a control device, in particular the machine control, or be determined by a sensor system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Washing And Drying Of Tableware (AREA)

Abstract

La présente invention concerne une machine de traitement équipée d'un dispositif de séchage (1), en particulier une machine de traitement de feuilles ou d'étoffes imprimées ou de traitement de substrats, spécialement une machine d'impression, et un procédé de fonctionnement d'un dispositif de séchage dans une machine de traitement. La présente invention a pour objet en variante une machine de traitement équipée d'un dispositif de séchage ou en variante un procédé de fonctionnement d'un dispositif de séchage dans une machine de traitement. En particulier le refroidissement doit être amélioré au niveau de sécheurs, de préférence de forte puissance, dans des machines de traitement, telles que des machines de traitement de substrats ou d'étoffes imprimées. Plus préférentiellement, le refroidissement d'un émetteur de rayons ultraviolets (2) doit être en outre amélioré, également sur la face inférieure. Selon l'invention, l'objectif est résolu en ce qu'au dispositif de séchage (1) est associé un système d'air soufflé (13) au moyen duquel l'air ambiant (11) s'écoulant dans l'ouverture d'admission d'air (10) à une certaine distance de la source de rayonnement (2) est influencé ou peut être influencé activement.
EP19719223.0A 2018-04-20 2019-04-16 Machine de traitement dotée d'un séchoir à rayonnement et procédé destiné au fonctionnement Active EP3781404B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22185084.5A EP4098447B1 (fr) 2018-04-20 2019-04-16 Machine d'usinage dotée d'un dispositif de séchage et procédé permettant de faire fonctionner un dispositif de séchage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018206154.8A DE102018206154B4 (de) 2018-04-20 2018-04-20 Trocknungsvorrichtung für eine bedruckstoffverarbeitende Maschine und Verfahren zum Betreiben einer Trocknungsvorrichtung
PCT/EP2019/059858 WO2019201960A1 (fr) 2018-04-20 2019-04-16 Machine de traitement équipée d'un sécheur à rayons et procédé de fonctionnement de ce sécheur

Related Child Applications (2)

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EP22185084.5A Division EP4098447B1 (fr) 2018-04-20 2019-04-16 Machine d'usinage dotée d'un dispositif de séchage et procédé permettant de faire fonctionner un dispositif de séchage

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EP22185084.5A Active EP4098447B1 (fr) 2018-04-20 2019-04-16 Machine d'usinage dotée d'un dispositif de séchage et procédé permettant de faire fonctionner un dispositif de séchage

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EP (2) EP3781404B1 (fr)
JP (1) JP6931133B2 (fr)
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DE (1) DE102018206154B4 (fr)
ES (2) ES2945810T3 (fr)
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CN216631458U (zh) * 2021-11-05 2022-05-31 江苏时代新能源科技有限公司 风嘴及涂布机

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Publication number Publication date
WO2019201960A1 (fr) 2019-10-24
DE102018206154A1 (de) 2019-10-24
US20210001621A1 (en) 2021-01-07
PL4098447T3 (pl) 2023-09-11
EP3781404B1 (fr) 2023-04-05
JP2021509465A (ja) 2021-03-25
CN112105505A (zh) 2020-12-18
ES2945810T3 (es) 2023-07-07
DE102018206154B4 (de) 2021-10-28
ES2951178T3 (es) 2023-10-18
EP4098447A1 (fr) 2022-12-07
JP6931133B2 (ja) 2021-09-01
CN112105505B (zh) 2021-07-20
EP4098447B1 (fr) 2023-06-28
US11046070B2 (en) 2021-06-29
PL3781404T3 (pl) 2023-08-21

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