EP1201429B1 - Procédé et dispositif refroidisseur pour une bande de matériau - Google Patents

Procédé et dispositif refroidisseur pour une bande de matériau Download PDF

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Publication number
EP1201429B1
EP1201429B1 EP01123320A EP01123320A EP1201429B1 EP 1201429 B1 EP1201429 B1 EP 1201429B1 EP 01123320 A EP01123320 A EP 01123320A EP 01123320 A EP01123320 A EP 01123320A EP 1201429 B1 EP1201429 B1 EP 1201429B1
Authority
EP
European Patent Office
Prior art keywords
web
roller
cooling
cooling roller
rollers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01123320A
Other languages
German (de)
English (en)
Other versions
EP1201429A2 (fr
EP1201429A3 (fr
Inventor
Clemens Johannes Maria De Vroome
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.)
Contiweb BV
Original Assignee
Goss Contiweb BV
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
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Publication of EP1201429A2 publication Critical patent/EP1201429A2/fr
Publication of EP1201429A3 publication Critical patent/EP1201429A3/fr
Application granted granted Critical
Publication of EP1201429B1 publication Critical patent/EP1201429B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F23/0483—Drying combined with cooling
    • 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
    • B41F23/0476—Cooling
    • B41F23/0479—Cooling using chill rolls

Definitions

  • the invention relates to a method and a device for cooling a material web, in particular a printed paper web, according to the preamble of claim 1 and claim 4.
  • Cooling units in particular in printing machines, are known from the prior art, which are used for cooling a material web previously heated in a heating device.
  • a material web previously heated in a heating device.
  • it is known to guide a web of material printed on one or more pages, for example a multicolored web, in particular a paper web after leaving the printing units by a dryer, for example a hot-air dryer, in which the web of material is heated to 100 to 150.degree. whereby the solvents contained in the printing ink evaporate and are disposed of via a trigger system.
  • the web After leaving the dryer, however, the web still has a fairly high temperature of about 100 ° C, and the ink on the surface of the web has some stickiness at this temperature due to the molten resins of the ink.
  • the material web is then fed to a further cooling and to reduce the tackiness of the ink before entering a folder a chill roll stand with a plurality of cooling means through which cooling rollers.
  • the material web is guided around cooling rollers and transfers their heat to the jacket of the cooled cooling rollers. Since the web offset printing with heat-set drying, the moisture of the paper is greatly reduced by the action of high temperatures in the dryer, this dehydration leads to a reinforcement of the web offset pressure typical tensile waves, which then on cooling of the web in the chill roll stand by the curing of the ink be fixed. These tensile waves, which form transversely to the web running direction of the material web, reduce the quality of the printed products considerably.
  • the cooling unit on cooling rollers which are adjustable against each other to the between them passing print carrier web to undergo a press-calendering.
  • the cooling rollers are provided with an adjusting device which generates the necessary contact pressure in order to be able to make the cooling rollers so that the waviness is virtually "ironed out" of the printed products.
  • said device claimed by the adjustment much space and must have a massive structure according to the prevailing contact pressures.
  • a device for controlling the temperature of cooling rollers wherein the cooling rollers are arranged offset from one another and the material web is guided around the cooling rollers in such a way that the material web partially wraps around the cooling rollers and is moved between the cooling rollers in straight running free paths.
  • a web cooling device which comprises cooling rollers and moistening devices and which is arranged next to a dryer, so that the web of material coming from the dryer enters through a slot in the interior of the web cooling device.
  • the web is then conveyed between the chill rolls in the web chilling apparatus on a long, straight and free path.
  • the invention is accordingly an object of the invention to provide a method for cooling a material web, by which train waves in the material web prevented or at least reduced. Furthermore, it is an object of the present invention to provide a method which enables the cooling of the web and the prevention or reduction of the tensile waves in the web in a simple and cost-effective manner.
  • Another object of the present invention is to provide an apparatus for cooling a web of material that allows the printer to easily and inexpensively and cost-effective way to prevent or at least reduce tensile waves in the web.
  • the material web is essentially in constant contact with the surface of a roller so that the curing of the printing ink occurs primarily on the curved web sections along the rollers, whereby the formation of tension waves in the material web is prevented according to the invention.
  • the upstream or downstream roll can also be realized in the form of a roll, but in the following, only one roll is meant to be the talk, and thus both a roll and a roll.
  • the material web is advantageously moved on a substantially always curved path. This results in the continuous curvature of the web path from the looping sections of the material web with the looped rollers, which can alternate positive and negative curvatures of the web along the web path. Straight running paths between the rollers, around which the material web is guided around, can be prevented in this way in an advantageous manner, whereby likewise an uncontrolled solidification of the printing ink and thereby effected fixing of the tensile waves in the material web is prevented.
  • the web is moved substantially immediately from the chill roll to the upstream or downstream roll.
  • the material web can thus have, for example, a first web section in which it wraps around the cooling roller and has a second web section which immediately follows the first web section and which corresponds to a looping section around the downstream roller.
  • the transition region from the first wrapping section to the second wrapping section can be such that a first, for example positive curvature, continuously changes into a second, for example negative, curvature, without there being any appreciable rectilinear path section between the two sections.
  • the device according to the invention for cooling a material web comprises a cooling roller which is partially wrapped by the material web moved on a web path. It is characterized in that the device comprises a roller arranged upstream or downstream of the cooling roller, which is partially wrapped by the material web and which is arranged so as to be spaced from the cooling roller, that the material web is moved from the cooling roller to the upstream or downstream roller such in that the track path is substantially meander-shaped.
  • the cooling roll and the upstream or downstream roll By arranging the cooling roll and the upstream or downstream roll according to the invention, it is possible to guide the material web around the rolls in a substantially meandering path, so that the curing of the ink takes place during the contact of the material web with one of the two rolls and prevents uncontrolled curing of the printing ink and thereby fixing the tensile waves in the web on free paths between the rollers, or at least reduced.
  • the upstream or downstream roller is a cooling roller or a guide roller.
  • Moving the web on a web path along two consecutively arranged chill rollers advantageously increases the length of the web section on which the web is cooled while traveling along a curved path, which additionally aids in preventing tensile waves. If the material web is guided around a deflection roller before or after the cooling roller, then this may also be arranged in an advantageous manner relative to the cooling roller such that the material web is moved on a substantially meandering path.
  • the diameter of the cooling roller is less than 300 mm, in particular in the range between 100 mm and 250 mm to choose.
  • the claimed space is advantageously reduced, for another, due to the small radius of the cooling rollers, the contact force or the surface pressure of the material web on the cooling rollers increases and thereby the heat transfer from the material web to the chill roll improved. Due to the inventive compact and staggered arrangement of cooling roller and upstream and downstream roller (or rollers) in conjunction with the choice of a small diameter of the two rollers, the claimed space can be additionally reduced in an advantageous manner. Chill rolls of the prior art, in contrast, usually have diameters greater than 400 mm and therefore take up more space.
  • the diameter of the chill roll prefferably be 150 mm at a web width of 1.5 m to be processed and to set the diameter of the chill roll to 180 mm at a web width of 2.0 m.
  • the cooling roller comprises a jacket and a cavity bounded by the shell, wherein the cavity is traversed by a coolant, in particular cooled water. Since the cooling roller preferably has no structured structure in its interior, but only a cavity, the weight of the cooling roller is advantageously reduced. As has been found by the Applicant, the combination of a chill roll having no particular internal structure, such as special coolant circulating inserts, in combination with the choice of a small diameter, results in particularly light and reliable cooling chill rolls and thereby assisting in the prevention of tensile waves.
  • the upstream and / or downstream roller of the cooling roller in the web running direction may be substantially directly upstream or downstream.
  • the upstream or downstream roller can thus be arranged in an advantageous manner to the cooling roller, that the paper transition without intermediate region directly from the upstream roller to the cooling roller and / or from the cooling roller to the downstream roller, but the two rollers not hired each other have to be.
  • the claimed space of the two rollers can be further reduced in an advantageous manner.
  • the cooling roller is a free-running roller.
  • the cooling roller can be rotated in an advantageous manner only by the prevailing between the web and the cooling roller frictional forces, so that dispensed drive devices of any kind and thus energy and cost can be saved.
  • the cooling roller is a driven, in particular a single driven roller.
  • the driven cooling roll can be used as a draw roll, by means of which a tensile stress in the material web is maintained, produced or changed.
  • the cooling roller used as a draw roller can, for example, the conveying of the web through the dryer, for example by a hot air dryer cause.
  • the tension can be controlled in an advantageous manner such that the formation of tension waves, in particular due to excessive tension, is prevented.
  • the device comprises a plurality of mutually downstream cooling rollers, which partially wraps around the material web, and which are arranged such that the web path along the cooling rollers extends substantially meandering.
  • it may be provided to guide the web around a larger number of consecutive chill rolls, for example, three to seven consecutive chill rolls so that the web completely cools and the ink sufficiently before leaving the last of the successively disposed chill rolls is cured to prevent the formation of train waves on the cooling rollers downstream path.
  • the material web can then be moved further, for example, after the last cooling roller on a rectilinearly extending web path, without resulting in the formation of tensile waves in the material web.
  • cooling rolls may further be provided to arrange the cooling rolls successively such that the web path along the cooling rolls essentially consists of the wrapping sections, or that the cooling rolls are arranged directly one after the other.
  • a further embodiment of the invention comprises a chill roll stand with a device for cooling a material web, in particular a printed paper web, as described above.
  • the cooling roller stand has a first cooling roller and a first conditioning unit, wherein the first conditioning unit is preferably arranged on a first web side of the material web and in the web running direction in front of the first cooling roller.
  • the first chill roll can be in the web running direction
  • the first chill roll be the chill roll stand, which is wrapped by the web.
  • the chill roll stand may have a second cooling roll and a second conditioning unit, wherein the second conditioning unit is preferably arranged on a second web side and in the web running direction in front of the second chill roll. It is possible, for example, that the second cooling roller seen in the web running direction is the second cooling roller of the cooling roller stand, and thus the first cooling roller is arranged downstream in the web running direction.
  • first and second conditioning unit are silicone applicator rollers for applying a silicone oil emulsion to the material web, the first conditioning unit being arranged in the web running direction in front of the inlet roller of the chill roller stand and the second conditioning unit in the web running direction in front of the chill roller subsequently arranged in the inlet roller.
  • first and second conditioning unit if desired, respectively on the same side of the material web.
  • conditioning units in the chill roll stand, it is advantageously possible to prevent the condensation of mineral oil vapors from the air barrier layer adhering to the material web to the chill rolls, thereby additionally avoiding the problem of color buildup on the chill rolls. It is thereby ensured in an advantageous manner that the surfaces of the cooling rollers remain clean and level, so that an undisturbed heat transfer from the web to the chill roll can be done and the web is sufficiently cooled when looping the chill rolls before moving on a free rectilinear path moved along the railway path. As a result, the formation of tension waves and their fixation in the material web is advantageously prevented in addition.
  • the chill roll stand is arranged downstream of a dryer, in particular such that fresh air can be drawn or blown through the chill roll stand into the dryer.
  • the chill roll stand preferably substantially immediately after the dryer and at a distance to the dryer which is smaller than, for example, 10 cm, the in Used fresh air dryer at the same time used to temper the chill roll stand and to convey from the material web by re-evaporation leaked solvent vapors in the dryer. Due to the advantageous tempering of the chill roll stand, the prevention of tensile waves is also positively influenced, resulting in the same advantage for the printer that the solvent vapors do not escape uncontrollably from the chill roll stand, and pollute the air in the pressure chamber. Instead, the fresh air is advantageously sucked into the dryer together with the solvent vapors or blown and there preferably the combustion process supplied directly or indirectly.
  • the chill roll stand may also be made for the chill roll stand to form a unit with the dryer, for example a structural unit or a unit formed by a common housing. It is thereby ensured in an advantageous manner, the supply of fresh air for the dryer through the chill roll stand, which supports the simultaneous temperature of the chill roll stand and the associated prevention of the formation of tensile waves, and as an additional advantage a reduction of the footprint for the dryer and the chill roll stand causes.
  • the chill roll stand has a web tension measuring unit, wherein the web tension measuring unit for determining the web tension or for detecting a web break can comprise a chill roll and sensor means.
  • the web tension measuring unit for determining the web tension or for detecting a web break can comprise a chill roll and sensor means.
  • the web tension measuring device integrated in the chill roll stand maintains a desired web tension within the chill roll stand by means of a control and / or regulating device connected to it, whereby the contact pressure of the material web on the chill rolls within the wrapping sections of the web path is a desired Has size, thus the Heat transfer from the web to the cooling roller in an advantageous for the printing process area.
  • This ensures that the material web has cooled sufficiently far after leaving the last cooling roller of the cooling roller group and the ink has cured sufficiently on the material web, so that there is no fixation of uncontrolled tensile waves on the following, for example, straight freewheeling web paths ,
  • the chill roll stand may comprise a register measuring unit, which may in particular include a CCD camera, which is used to monitor the color register.
  • a register measuring unit in particular include a CCD camera, which is used to monitor the color register.
  • the chill roll stand can comprise a web edge control unit, which comprises a movable, in particular pivotable chill roll for controlling the web edge.
  • a web edge control unit which comprises a movable, in particular pivotable chill roll for controlling the web edge.
  • a chill roll stand 1 is shown, which is arranged at a distance 3 to a schematically indicated dryer 2 and firmly anchored on the bottom 4 of the pressure chamber.
  • a material web 5 leaves the dryer 2 and enters the chill roll stand 1 at an inlet point 6.
  • the material web 5 is first contacted on a first side of the web by a silicone applicator roll 7, and thereby acted upon with a silicone oil emulsion. Subsequently, the material web 5 runs with its coated with silicone oil web side over a first cooling roller 8, which is used at the same time as a deflection roller and is guided by this to a second cooling roller 9 of a cooling roller group 10.
  • the material web 5 On the rectilinear free path 11, the material web 5 is brought into contact on a second side of the material web with a silicone applicator roll 12 and also provided on this side with a silicone oil emulsion.
  • the material web 5 wraps around the second cooling roller 9 with the second side of the material web coated with silicone oil and follows along the path several Umschlingunsabêten different cooling rollers 9, 13, 15, 16, 17.
  • the web 5 leaves the looping section of the second cooling roller 9 and Runs substantially directly into the wrap portion of the third chill roll 13, such that the material web along of the web path substantially has a meandering path.
  • the web guide according to the invention is in detail Fig. 3 refer to.
  • the material web 5 is guided around the cooling rollers 15, 16 and 17 in further wrapping sections, the meandering path of the material web 5 being maintained.
  • the material web coated on both sides with silicone oil and sufficiently cooled by the five cooling rolls 9, 13, 15, 16 and 17 is then guided on a web section with a straight path 18 to a further cooling roll 19, which is preferably arranged above the first cooling roll 8 ,
  • the temperature has cooled so far that the ink cured sufficiently on the surface of the web and thus no longer has annoying stickiness, so that no along the web 5 extending on the straight web portion 18 Traction waves occur and can be fixed by drying the ink.
  • the cooling rollers of the cooling roller group 10 are so densely packed in the inventive manner and offset from one another that the path of the material web 5 along the Umschlingungsabroughe the individual cooling rollers substantially constantly has a curvature and the web 5, except at the length reduced to a minimum transition points between the cooling rolls, is constantly in contact with the surface of one of the cooling rolls of the cooling roll group 10. It is ensured by this particular type of web guide in accordance with the invention a constant heat transfer from the Matrialbahn 5 on the cooling rollers of the cooling roller group 10, and the web 5 leaves the successive Umschlingungsabroughe the cooling rollers of the cooling roller group 10 only at sufficiently further cooling.
  • the web 5 is further passed around chill rolls 19, 20, 21, 22 and 23, which may be arranged in the same manner as through the chill rolls 9 to 17 with substantially tangential points of contact with each other, but which is not necessarily so densely packed and offset must be arranged to each other, such as the cooling rollers of the cooling roller group 10, since a sufficiently high cooling of the material web 5 has already taken place.
  • the cooling rollers 17 and 22 are each equipped with a motor 24 and 25 as a drive unit, and it is also sufficient if only one of the two cooling rollers 17 and 22 is equipped with a motor and said motor 24 or 25 to maintain the necessary tension of the web. 5 is used.
  • the cooling rollers 8 and 23 are provided with respective web tension measuring units 26 and 27 which, in addition to the deflectable or movable cooling rollers 8 and 23, preferably also comprise sensor means 28 and 29 with which the change in the deflection produced by the varying web tension or movement of the respective cooling roller 8 and 23 is determined.
  • the web tension values, which are determined at least by one of the two web tension measuring units 26 or 27, are fed to a control and / or regulating device, not shown, which controls the motors 24 and 25 and thereby corrects the web tension in the desired manner.
  • the web tension measuring unit 26 is used primarily for determining the web tension in the web section 30 and the web tension measuring unit 27 primarily for determining the web tension in the web section 31.
  • a web break can also be detected, for example by a sudden above-average web tension change is caused, wherein the control device, not shown, then preferably trigger an emergency stop the printing press or can operate a web catcher.
  • the measurement of the web tension can in principle take place on each cooling roll by means of an associated web tension measuring unit, but preferably takes place on one of the rolls 8, 9, 13, 15, 16, 17, in particular on the roll 9.
  • the measurement via a force measurement in or on the bearings of the rollers or via a suitable lever device, which allows a deflection of the roller and cooperates with a sensor, take place.
  • the Indian Fig. 1 shown chill roll stand further comprises a web feed device 32, with which the beginning of the web 5 is guided around the chill roll stand 1 and around the individual chill rolls coming from the dryer 2 in the device of the printing press, until finally the web start of the web 5 at the outlet 33 from runs out of the chill roll stand. Furthermore, in the Fig. 1 a pivoting mechanism 34 is shown, which serves to pivot the first chill roll 8 for aligning the web edges in the chill roll stand about a pivot axis perpendicular to the axis of rotation of the first chill roll 8.
  • the chill roll stand may also include a rewet unit 49 to restore the dried and cooled web 5, prior to entering the folder, a moisture content necessary for smooth and high quality further processing of the printed web 5.
  • dampening solution can be applied by electrostatic charging of the dampening solution and the web 5 on this.
  • Fig. 2 shows a hot air dryer 2 with a downstream chill roll stand 1 according to the invention for drying a paper web 5, which was printed on both sides of a web-fed rotary offset printing machine, not shown.
  • the chill roll stand 1 has a housing 35, which is arranged at a distance 3 from the housing 36 of the dryer 2.
  • the distance 3 prevents movement and / or Deformation of the dryer 2 of this moves the chill roll stand 1 and thereby the web tension between the chill roll stand 1 and a subsequent further processing unit, for example a folder, is adversely affected.
  • a movement and / or deformation of the dryer 2 can result, for example, from the different distribution of the heat generator within the dryer.
  • the housing 35 of the chill roll stand 1 is on the housing side 37, preferably exclusively in the region of the outlet opening of the material web 5, open, so that fresh air 38 through the open side of the case 37 in the chill roll stand 1 and from there through one or more openings, not shown in a cooling zone 39 of the dryer 2 can flow.
  • the fresh air 38 tempered the chill roll stand and prevents the escape of solvents from the chill roll stand 1 in the ambient air of the pressure chamber, wherein the solvents escape by evaporation from the web 5 in the chill roll stand 1.
  • the solvent-enriched fresh air 38 is used in the dryer 2 for drying the material web 5, wherein the solvents, for example, in a post-combustion zone 40 are energetically further utilized.
  • Fig. 3 shows in a detailed side view schematically the path of the web 5 along the three cooling rollers 9, 13 and 15.
  • the web 5 contacted at a location 44, the cooling roller 9 and wraps around them preferably to a first transition point 45, at which the web 5 of the Chill roller 9 passes to the cooling roller 13 and is deflected. Thereafter, the material web 5 wraps around the cooling roller 13 up to a second transition point 46, at which the material web 5 merges with the cooling roller 15. At the last contact point 47, the material web 5 leaves the looping region with the cooling roll 15 and runs, for example, on a straight, free web section to a downstream roll (not shown).
  • Fig. 3 shows in a detailed side view schematically the path of the web 5 along the three cooling rollers 9, 13 and 15.
  • the web 5 contacted at a location 44, the cooling roller 9 and wraps around them preferably to a first transition point 45, at which the web 5 of the Chill roller 9 passes to the cooling roller 13 and is deflected. Thereafter
  • rollers 9, 13 and 15 can be in contact with the web at the tangent points at the same time.
  • rollers 9, 13 and 15 can also be arranged to be adjustable to one another, so that the distance between two rollers can be adjusted according to the different paper thicknesses.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Printing Methods (AREA)

Claims (27)

  1. Procédé de refroidissement d'une bande de matériau (5), en particulier d'une bande de papier imprimée, sachant que la bande de matériau (5) est déplacée après le séchage dans un sécheur (2) sur une voie de bande par au moins un rouleau refroidisseur (9, 13, 15), sachant que la bande de matériau (5) est déplacée en étant au moins partiellement enroulée par le rouleau refroidisseur (9) et un rouleau (13, 15) disposé en amont ou en aval du rouleau refroidisseur de telle manière que la voie de bande s'étende sensiblement en forme de méandre, sachant que la bande de matériau présente une première section d'enroulement et une seconde section d'enroulement, sachant que le rouleau refroidisseur (9) et le rouleau (13, 15) disposé en amont ou en aval du rouleau refroidisseur sont disposés l'un par rapport à l'autre en excluant une pression de serrage agissant entre respectivement deux des rouleaux, sachant que le diamètre du rouleau refroidisseur (8, 9, 13, 15, 16, 17, 19, 20, 21, 22, 23) est inférieur à 300 mm, caractérisé en ce
    que la voie de bande se compose sensiblement des sections d'enroulement de la bande de matériau sur les deux rouleaux,
    que la bande de matériau présente une zone de transition de la première section d'enroulement à la seconde section d'enroulement de sorte qu'une première courbure passe en permanence dans une seconde courbure sans qu'une section de bande notable s'étendant en ligne droite ne se trouve entre les deux sections d'enroulement, et en ce que cette section de bande s'étendant en ligne droite est inférieure à 5 cm.
  2. Procédé selon la revendication 1,
    caractérisé en ce
    que la bande de matériau (5) est déplacée sur une voie de bande sensiblement toujours courbée.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce
    que la bande de matériau (5) est déplacée sensiblement directement du rouleau refroidisseur (13) au rouleau (9, 15) disposé en amont ou aval.
  4. Dispositif de refroidissement d'une bande de matériau (5), en particulier d'une bande de papier imprimée, avec un rouleau refroidisseur (13) qui est enroulé partiellement par la bande de matériau (5) déplacée sur une voie de bande,
    sachant que le dispositif comporte un rouleau (9, 15) disposé en amont ou en aval du rouleau refroidisseur (13), lequel est enroulé partiellement par la bande de matériau (5) et lequel est disposé de telle manière que la bande de matériau (5) soit déplacée du rouleau refroidisseur (13) au rouleau (9, 15) disposé en aval ou en amont de telle façon que la voie de bande s'étend sensiblement en forme de méandre, sachant que la bande de matériau présente une première section d'enroulement et une seconde section d'enroulement, sachant que
    le rouleau refroidisseur (9) et le rouleau (13, 15) disposé en aval ou en amont du rouleau refroidisseur sont disposés l'un par rapport à l'autre en excluant une pression de serrage agissant respectivement entre deux des rouleaux, sachant que le diamètre du rouleau refroidisseur (8, 9, 13, 15, 16, 17, 19, 20, 21, 22, 23) est inférieure à 300 mm, caractérisé en ce que la voie de bande se compose sensiblement des sections d'enroulement de la bande de matériau sur les deux rouleaux, en ce que la bande de matériau présente une zone de transition de la première section d'enroulement à la seconde section d'enroulement de sorte qu'une première courbure passe en permanence dans une seconde courbure sans qu'une section de bande notable s'étendant en ligne droite ne se trouve entre les deux sections d'enroulement, et en ce que cette section de bande s'étendant en ligne droite est inférieure à 5 cm.
  5. Dispositif selon la revendication 4,
    caractérisé en ce
    que le rouleau disposé en amont ou en aval (9, 15) est un rouleau refroidisseur.
  6. Dispositif selon la revendication 4 ou 5,
    caractérisé en ce
    que le rouleau disposé en amont ou en aval (9, 15) est un rouleau de renvoi.
  7. Dispositif selon l'une quelconque des revendications 4 à 6,
    caractérisé en ce
    que le diamètre des rouleaux refroidisseurs (8, 9, 13, 15, 16, 17, 19, 20, 21, 22, 23) est compris entre 100 et 250 mm.
  8. Dispositif selon l'une quelconque des revendications 4 à 7,
    caractérisé en ce
    que le rouleau refroidisseur (8, 9, 13, 15, 16, 17, 19, 20, 21, 22, 23) comporte une enveloppe et un espace creux délimité par l'enveloppe, lequel espace creux est traversé par du fluide de refroidissement, en particulier de l'eau refroidie.
  9. Dispositif selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce
    que le rouleau disposé en amont ou en aval (9, 15) est disposé sensiblement directement en amont ou en aval du rouleau refroidisseur (13) dans le sens de la bande.
  10. Dispositif selon l'une quelconque des revendications 4 à 9,
    caractérisé en ce
    que le rouleau refroidisseur (8, 9, 13, 15, 16, 17, 19, 20, 21, 22, 23) est un rouleau de marche à vide.
  11. Dispositif selon l'une quelconque des revendications 4 à 9,
    caractérisé en ce
    que le rouleau refroidisseur (8, 9, 13, 15, 16, 17, 19, 20, 21, 22, 23) est un rouleau commandé, en particulier un rouleau commande individuellement.
  12. Dispositif selon la revendication 11,
    caractérisé en ce
    que le rouleau refroidisseur commandé (8, 9, 13, 15, 16, 17, 19, 20, 21, 22, 23) est réalisé comme un rouleau tendeur qui exerce une force de traction sur la bande de matériau (5).
  13. Dispositif selon l'une quelconque des revendications 4 à 12,
    caractérisé en ce
    que le dispositif comporte plusieurs rouleaux refroidisseurs (9, 13, 15, 16, 17) disposés en aval les uns des autres, qu'entoure respectivement partiellement la bande de matériau (5) et qui sont disposés de telle manière que la voie de bande s'étend sensiblement en forme de méandre le long des rouleaux refroidisseurs (9, 13, 15, 16, 17).
  14. Dispositif selon la revendication 13,
    caractérisé en ce
    que les rouleaux refroidisseurs (9, 13, 15, 16, 17) sont disposés de manière successive de telle manière que la voie de bande le long des rouleaux refroidisseurs (8, 9, 13, 15, 16, 17, 19, 20, 21, 22, 23) se compose sensiblement des sections d'enroulement.
  15. Dispositif selon la revendication 13 ou 14,
    caractérisé en ce
    que les rouleaux refroidisseurs (9, 13, 15, 16, 17) sont disposés de manière directement successive.
  16. Porte-rouleau refroidisseur
    caractérisé par
    un dispositif selon l'une quelconque des revendications 4 à 15.
  17. Porte-rouleau refroidisseur selon la revendication 16,
    caractérisé par
    un premier rouleau refroidisseur (8) et une première unité de conditionnement (7) qui est disposée sur un premier côté de bande et dans le sens de la bande devant le premier rouleau refroidisseur (8).
  18. Porte-rouleau refroidisseur selon la revendication 7,
    caractérisé par
    un second rouleau refroidisseur (9) et une seconde unité de conditionnement (12 ) qui est disposée sur un second côté de bande et dans le sens de la bande devant le second rouleau refroidisseur (9).
  19. Porte-rouleau refroidisseur selon la revendication 17 ou 18,
    caractérisé en ce
    que la première et/ou la seconde unité de conditionnement (7, 12) comporte des rouleaux d'application de silicone, en ce que la première unité de conditionnement (7) est disposée dans le sens de la bande devant un rouleau d'entrée et la seconde unité de conditionnement (12) dans le sens de la bande devant un rouleau refroidisseur (9) suivant le rouleau d'entrée et en ce que la première et seconde unité de conditionnement (7, 12) sont disposées sur des côtés de bande différents.
  20. Combinaison d'un porte-rouleau refroidisseur selon l'une quelconque des revendications 16 à 19 et d'un sécheur,
    caractérisée en ce
    que le porte rouleau refroidisseurs (1) est disposé en aval du sécheur (2) de telle manière que de l'air frais (38) soit inséré ou soufflé lois du fonctionnement du sécheur par le porte-rauleau refroidisseur (1) dans le sécheur (2), et
    que le porte-rouleau refroidisseur (1) est disposé sensiblement directement en aval du sécheur (2), en particulier présente une distance du sécheur (2) inférieure à 10 cm.
  21. Combinaison selon la revendication 20,
    caractérisée en ce
    que le porte-routeau refroidisseur (1) forme avec le sécheur (2) une unité.
  22. Combinaison selon l'une quelconque des revendications 20 ou 21,
    caractérisée par
    une unité de mesure de tension de la bande (26, 27, 8, 23, 28, 29).
  23. Combinaison selon la revendication 22,
    caractérisée en ce
    que l'unité de mesure de tension de la bande (26, 27) comporte, pour la détermination de la tension de la bande ou pour la détection d'une rupture de bande, des moyens de détection (28, 29) qui surveillent un déplacement du rouleau refroidisseur (8, 23).
  24. Porte-rouleau refroidisseur selon l'une quelconque des revendications 16 à 19 ou combinaison selon l'une quelconque des revendications 20 à 23,
    caractérisée par
    une unité de mesure de registre qui comporte en particulier une caméra CCD, et qui est utilisée pour la surveillance du registre de couleur.
  25. Porte-rouleau refroidisseur selon l'une quelconque des revendications 16 à 19 ou combinaison selon l'une quelconque des revendications 20 à 24,
    caractérisé par
    une unité de commande d'arête de bande (34, 26) qui comporte, pour la correction latérale de la position de la bande de matériau, un rouleau refroidisseur (8) mobile, en particulier pivotant.
  26. Combinaison d'un sécheur, en particulier d'un sécheur à air chaud,
    et
    d'un dispositif disposé directement en aval de celui-ci selon l'une quelconque des revendications 4 à 15 ou d'un porte-rouleau refroidisseur selon l'une quelconque des revendications 16 à 19.
  27. Presse rotative à imprimer
    caractérisée par
    une combinaison selon la revendication 26.
EP01123320A 2000-10-24 2001-10-08 Procédé et dispositif refroidisseur pour une bande de matériau Expired - Lifetime EP1201429B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10052831 2000-10-24
DE10052831 2000-10-24

Publications (3)

Publication Number Publication Date
EP1201429A2 EP1201429A2 (fr) 2002-05-02
EP1201429A3 EP1201429A3 (fr) 2007-10-03
EP1201429B1 true EP1201429B1 (fr) 2012-06-27

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ID=7660980

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Application Number Title Priority Date Filing Date
EP01123320A Expired - Lifetime EP1201429B1 (fr) 2000-10-24 2001-10-08 Procédé et dispositif refroidisseur pour une bande de matériau

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US (1) US7065901B2 (fr)
EP (1) EP1201429B1 (fr)
JP (1) JP2002192691A (fr)
DE (1) DE10149521A1 (fr)

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Also Published As

Publication number Publication date
US7065901B2 (en) 2006-06-27
US20030221332A1 (en) 2003-12-04
JP2002192691A (ja) 2002-07-10
EP1201429A2 (fr) 2002-05-02
EP1201429A3 (fr) 2007-10-03
DE10149521A1 (de) 2002-06-20

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