EP1406055A1 - Apparatus for drying printed matter - Google Patents

Apparatus for drying printed matter Download PDF

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Publication number
EP1406055A1
EP1406055A1 EP03021067A EP03021067A EP1406055A1 EP 1406055 A1 EP1406055 A1 EP 1406055A1 EP 03021067 A EP03021067 A EP 03021067A EP 03021067 A EP03021067 A EP 03021067A EP 1406055 A1 EP1406055 A1 EP 1406055A1
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EP
European Patent Office
Prior art keywords
drying
printed material
nozzles
printed
current
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.)
Ceased
Application number
EP03021067A
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German (de)
French (fr)
Inventor
Peter A. Monkewitz
Trong-Vien Truong
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Bobst Mex SA
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Bobst SA
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Application filed by Bobst SA filed Critical Bobst SA
Publication of EP1406055A1 publication Critical patent/EP1406055A1/en
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/377—Cooling or ventilating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials

Definitions

  • the present invention relates to a device for drying of a printed material, and more particularly to a device using a drying fluid propelled towards the printed material through nozzles.
  • the material printed in the form of sheets or strips passes through a drying device comprising a box in which are placed a series of nozzles through which a drying fluid, usually air heated, is propelled on the printed face of the printed material.
  • a drying fluid usually air heated
  • This air heated after being in contact with the printed material, is then extracted from the suction dryer cabinet.
  • the heated air is blown towards the printed part of the material printed by nozzles placed perpendicular to the plane defined by the material in strip or sheet.
  • the movement of the printed matter moving at high speed causes a laminar current in the vicinity of its surface somewhat isolating the printed layer from the ambient air of the dryer.
  • a solution to facilitate the access of the air blown by the nozzles to the printed layer consists in destroying the laminar current by causing turbulence neighborhood of it.
  • Such a solution is implemented by the subject of the patent US4,779,555 in which the heated air, blown in the direction of the material printed by a nozzle, is then returned by said printed material in direction of several deflectors, placed in the vicinity of the nozzle, so as to cause a turbulence effect in the laminar current existing at vicinity of the printed surface.
  • this device has the disadvantage of requiring the combination of nozzles and deflectors to create a current turbulent in the vicinity of the printed surface of the printed material.
  • This combination has the further disadvantage of not creating a current continuous turbulent near the printed material due to the fact that at the location of the nozzle, more particularly at the right of the latter, the flow of blowing air which will come into contact with the strip material or in sheet will have laminar characteristics.
  • the object of the present invention is to provide a device for drying of printed, strip or sheet, construction material simple, using simple nozzles that are not associated with deflectors complementary.
  • Figure 1 is a schematic sectional view of a device for drying according to the state of the art in which the printed material 1 is moves in a chamber 2 a drying device in front of nozzles 3 having two blowing holes 4, 5.
  • Each of the blowing holes 4, 5 is associated with series of deflectors 6, 7.
  • the current drying fluid laminar 8 emerging from the blowing orifices 4.5 is propelled towards the material printed by a nozzle 3, then it is then returned by the surface of the printed material 1 in the direction of several deflectors 6, 7, placed at the neighborhood of nozzle 3, so as to cause a turbulence effect in the laminar current existing in the vicinity of the printed surface.
  • This fluid turbulent drying 9 arrives on the printed material 1 and will destroy the laminar characteristic of the current in the vicinity of the surface of the printed matter 1 so that the drying fluid can mix with solvents emanating from the ink deposited on the printed material and increase by this eliminates the solvents present on this printed material.
  • the mixture 10 of drying fluid and solvents will then be drawn into a drain 11.
  • FIG 2 is a schematic view, in partial section, of a conventional drying device 12 through which a material passes printed 13.
  • This drying device comprises an enclosure 14 in which nozzles 15 are arranged for blowing a heated drying fluid by heating bodies 16.
  • the circulation of the drying fluid is represented by the arrows 17.
  • the drying is sucked in via an evacuation pipe 18 using a first suction means 19 which could, for example be in the form of a fan.
  • Part 20 of the mixture of drying fluid and solvents is discharged through a pipe 21, connected to a second suction means (not shown), while another part 22 of this mixture is recycled in enclosure 14 (see Figure 3).
  • FIG 3 is a schematic view, in partial section, along III-III of figure 2 in which the same reference figures have been used to designate the different elements of the drying device. It will be noted that, in this version of the drying device, the evacuation drying fluid loaded with solvents is carried out through the center of the device, and that the flow of this drying fluid acts indirectly on the printed face of the material printed via its other face, which can be possibly not printed.
  • FIG. 4 is a sectional view showing an arrangement nozzles 15 of the drying device 12 possible.
  • Each of these nozzles 15 is equipped with means 23 for transforming the flow of the drying fluid which is laminar in nozzle 15 and which will become turbulent immediately at the outlet of nozzle 15.
  • This turbulent flow is represented by the sign of reference 28.
  • the printed material 13 consists of a support 24, usually cardboard or any material that can receive a coating ink 25 loaded with solvents.
  • the printed material 13 moves at great speed speed in the direction indicated by arrow 26 causing an air layer laminar 27 which should be broken to ensure easier evacuation of the solvent and thereby efficient drying.
  • the mixture consisting of the drying and by the solvents, represented in 32, will then be vacuumed by a exhaust pipe 29 placed between two successive nozzles 15.
  • This exhaust pipe 29 can be constituted by a simple tube.
  • the location of the exhaust pipe 29 is chosen preferably at equal distance from each of the two successive nozzles 15. It's obvious that one could choose to place this exhaust pipe 29 at any what distance from each of the nozzles 15.
  • the orifices 30 of the nozzles 15 are have the form of a slot extending over the entire length of the nozzles 15.
  • the exhaust manifold 29 has an opening 31 which also extends along the length of the exhaust manifold 29 corresponding to the length of the nozzles 15.
  • Figure 5 is a sectional view of a nozzle 15 of the device drying 12.
  • the orifice 30 of the nozzle 15 is provided with a mechanical means 23 for transformation of the flow of the drying fluid flow.
  • the crenellated structure 33 is arranged parallel to the downstream face, with respect to the direction of displacement 26 of the printed material, from the end of the orifice 30, it is say parallel to the direction of passage of the drying fluid in the nozzle 15 (see figure 4).
  • the nozzles 15 are arranged perpendicularly by relative to the surface of the printed material 13 and close to this surface. An inclined arrangement of the nozzles 15 relative to the surface of the material print 13 can also be considered. Obviously, the invention is not not limited to this example. At the limit and if necessary, each end of the orifices 30 of the nozzles 15 could be fitted with two crenellated structures 33.
  • Figure 6 is a perspective view of an embodiment of one of drying device nozzles.
  • the orifice 30 of the nozzle 15 is equipped with a mechanical means 23 for transforming the flow of the fluid flow from drying.
  • the mechanical means 23 for transforming the flow of the flow of drying fluid is, in the figure shown, perpendicular to the circulation drying fluid through the orifice 30 of the nozzle 15.
  • the means 23 transformation mechanics could also be parallel to the circulation of the drying fluid through the orifice 30 of the nozzle 15 (see Figure 4)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Ink Jet (AREA)

Abstract

The device has nozzles (15) with an outlet to blow a drying fluid on a printed material that is warmed by heating units. The fluid presents a turbulent flux that is produced at outlets through a transformation unit of a laminar flux. The fluid is extracted from an enclosure of the drying device by an exhaust pipe, located between two successive nozzles and is of equidistance from each of the nozzles.

Description

La présente invention est relative à un dispositif pour le séchage d'une matière imprimée, et plus particulièrement à un dispositif utilisant un fluide de séchage propulsé en direction de la matière imprimée au travers de buses.The present invention relates to a device for drying of a printed material, and more particularly to a device using a drying fluid propelled towards the printed material through nozzles.

Dans les dispositifs de séchage couramment utilisés, la matière imprimée se présentant sous la forme de feuilles ou de bandes, passe dans un dispositif de séchage comportant un caisson dans lequel sont placées une série de buses par lesquelles un fluide de séchage, généralement de l'air chauffé, est propulsé sur la face imprimée de la matière imprimée. Cet air chauffé, après avoir été au contact de la matière imprimée, est ensuite extrait du caisson du séchoir par aspiration. Dans ce genre de séchoirs, l'air chauffé est soufflé en direction de la partie imprimée de la matière imprimée par des buses placées perpendiculairement par rapport au plan défini par la matière en bande ou en feuille. Le mouvement de la matière imprimée se déplaçant à grande vitesse provoque au voisinage de sa surface un courant laminaire isolant quelque peu la couche imprimée de l'air ambiant du séchoir. Ce courant laminaire doit donc être traversé par l'air provenant des buses pour que l'action de cet air chauffé puisse s'effectuer efficacement sur la couche imprimée. Une solution pour faciliter l'accès de l'air soufflé par les buses à la couche imprimée consiste à détruire le courant laminaire en provoquant des turbulences au voisinage de celui-ci. Une telle solution est mise en oeuvre par l'objet du brevet US4,779,555 dans lequel l'air chauffé, soufflé en direction de la matière imprimée par une buse, est ensuite renvoyé par ladite matière imprimée en direction de plusieurs déflecteurs, placés au voisinage de la buse, de façon à provoquer un effet de turbulences dans le courant laminaire existant au voisinage de la surface imprimée.In commonly used drying devices, the material printed in the form of sheets or strips, passes through a drying device comprising a box in which are placed a series of nozzles through which a drying fluid, usually air heated, is propelled on the printed face of the printed material. This air heated, after being in contact with the printed material, is then extracted from the suction dryer cabinet. In this kind of dryers, the heated air is blown towards the printed part of the material printed by nozzles placed perpendicular to the plane defined by the material in strip or sheet. The movement of the printed matter moving at high speed causes a laminar current in the vicinity of its surface somewhat isolating the printed layer from the ambient air of the dryer. This current laminar air must therefore pass through it for the action of this heated air can be effectively carried out on the printed layer. A solution to facilitate the access of the air blown by the nozzles to the printed layer consists in destroying the laminar current by causing turbulence neighborhood of it. Such a solution is implemented by the subject of the patent US4,779,555 in which the heated air, blown in the direction of the material printed by a nozzle, is then returned by said printed material in direction of several deflectors, placed in the vicinity of the nozzle, so as to cause a turbulence effect in the laminar current existing at vicinity of the printed surface.

Ce dispositif présente cependant l'inconvénient de nécessiter la combinaison de buses et de déflecteurs pour arriver à créer un courant turbulent au voisinage de la surface imprimée de la matière imprimée. Cette combinaison présente de plus l'inconvénient de ne pas créer un courant turbulent continu au voisinage de la matière imprimée ceci en raison du fait qu'à l'emplacement de la buse, plus particulièrement au droit de celle-ci, l'écoulement de l'air de soufflage qui viendra au contact de la matière en bande ou en feuille aura des caractéristiques laminaires.However, this device has the disadvantage of requiring the combination of nozzles and deflectors to create a current turbulent in the vicinity of the printed surface of the printed material. This combination has the further disadvantage of not creating a current continuous turbulent near the printed material due to the fact that at the location of the nozzle, more particularly at the right of the latter, the flow of blowing air which will come into contact with the strip material or in sheet will have laminar characteristics.

Le but de la présente invention consiste à procurer un dispositif de séchage d'une matière imprimée, en bande ou en feuille, de construction simple, utilisant de simples buses qui ne sont pas associées à des déflecteurs complémentaires.The object of the present invention is to provide a device for drying of printed, strip or sheet, construction material simple, using simple nozzles that are not associated with deflectors complementary.

Ce but est réalisé par un dispositif de séchage d'une matière en bande ou en feuille imprimée conforme à ce qu'énonce la revendication 1.This goal is achieved by a device for drying a material strip or printed sheet according to claim 1.

L'invention sera mieux comprise à l'étude d'un mode de réalisation pris à titre nullement limitatif et illustré par les figures annexées dans lesquelles :

  • la figure 1 est une vue schématique, en coupe, d'un dispositif de séchage suivant l'état de la technique,
  • la figure 2 est une vue schématique, en coupe partielle, d'un dispositif de séchage,
  • la figure 3 est une vue schématique, en coupe partielle, selon III-III de la figure 2,
  • la figure 4 est une vue en coupe représentant la disposition des buses du dispositif de séchage, et
  • la figure 5 est une vue en coupe d'une buse du dispositif de séchage.
  • la figure 6 est une vue en perspective d'une réalisation d'une des buses du dispositif de séchage.
The invention will be better understood from the study of an embodiment taken without any limitation being implied and illustrated by the appended figures in which:
  • FIG. 1 is a schematic view, in section, of a drying device according to the state of the art,
  • FIG. 2 is a schematic view, in partial section, of a drying device,
  • FIG. 3 is a schematic view, in partial section, along III-III of FIG. 2,
  • FIG. 4 is a sectional view showing the arrangement of the nozzles of the drying device, and
  • Figure 5 is a sectional view of a nozzle of the drying device.
  • Figure 6 is a perspective view of an embodiment of one of the nozzles of the drying device.

La figure 1 est une vue schématique, en coupe, d'un dispositif de séchage suivant l'état de la technique dans lequel la matière imprimée 1 se déplace dans une enceinte 2 d'un dispositif de séchage devant des buses 3 possédant deux orifices de soufflage 4, 5. Chacun des orifices de soufflage 4, 5 est associé avec des séries de déflecteurs 6, 7. Le fluide de séchage à courant laminaire 8 sortant des orifices de soufflage 4,5 est propulsé en direction de la matière imprimée par une buse 3, puis il est ensuite renvoyé par la surface de la matière imprimée 1 en direction de plusieurs déflecteurs 6, 7, placés au voisinage de la buse 3, de façon à provoquer un effet de turbulences dans le courant laminaire existant au voisinage de la surface imprimée. Ce fluide de séchage à courant turbulent 9 arrive sur la matière imprimée 1 et va détruire la caractéristique laminaire du courant existant au voisinage de la surface de la matière imprimée 1 de sorte que le fluide de séchage pourra se mélanger aux solvants émanant de l'encre déposée sur la matière imprimée et augmenter de ce fait l'élimination des solvants présents sur cette matière imprimée. Le mélange 10 de fluide de séchage et de solvants sera ensuite aspiré dans une canalisation d'évacuation 11.Figure 1 is a schematic sectional view of a device for drying according to the state of the art in which the printed material 1 is moves in a chamber 2 a drying device in front of nozzles 3 having two blowing holes 4, 5. Each of the blowing holes 4, 5 is associated with series of deflectors 6, 7. The current drying fluid laminar 8 emerging from the blowing orifices 4.5 is propelled towards the material printed by a nozzle 3, then it is then returned by the surface of the printed material 1 in the direction of several deflectors 6, 7, placed at the neighborhood of nozzle 3, so as to cause a turbulence effect in the laminar current existing in the vicinity of the printed surface. This fluid turbulent drying 9 arrives on the printed material 1 and will destroy the laminar characteristic of the current in the vicinity of the surface of the printed matter 1 so that the drying fluid can mix with solvents emanating from the ink deposited on the printed material and increase by this eliminates the solvents present on this printed material. The mixture 10 of drying fluid and solvents will then be drawn into a drain 11.

La figure 2 est une vue schématique, en coupe partielle, d'un dispositif de séchage conventionnel 12 dans lequel passe une matière imprimée 13. Ce dispositif de séchage comprend une enceinte 14 dans laquelle sont agencées des buses 15 destinées à souffler un fluide de séchage chauffé par des corps de chauffe 16. La circulation du fluide de séchage est représentée par les flèches 17. Une fois chargé de solvants, le fluide de séchage est aspiré par une canalisation d'évacuation 18 à l'aide d'un premier moyen d'aspiration 19 qui pourrait, par exemple se présenter sous la forme d'un ventilateur. Une partie 20 du mélange de fluide de séchage et de solvants est évacuée par une canalisation 21, reliée à un second moyen d'aspiration (non représenté), alors qu'une autre partie 22 de ce mélange est recyclée dans l'enceinte 14 (voir figure 3).Figure 2 is a schematic view, in partial section, of a conventional drying device 12 through which a material passes printed 13. This drying device comprises an enclosure 14 in which nozzles 15 are arranged for blowing a heated drying fluid by heating bodies 16. The circulation of the drying fluid is represented by the arrows 17. Once loaded with solvents, the drying is sucked in via an evacuation pipe 18 using a first suction means 19 which could, for example be in the form of a fan. Part 20 of the mixture of drying fluid and solvents is discharged through a pipe 21, connected to a second suction means (not shown), while another part 22 of this mixture is recycled in enclosure 14 (see Figure 3).

La figure 3 est une vue schématique, en coupe partielle, selon III-III de la figure 2 dans laquelle les mêmes chiffres de référence ont été utilisés pour désigner les différents éléments du dispositif de séchage. On remarquera que, dans cette version du dispositif de séchage, l'évacuation du fluide de séchage chargé de solvants s'effectue par le centre du dispositif, et que le flux de ce fluide de séchage agit indirectement sur la face imprimée de la matière imprimée par l'intermédiaire de son autre face, pouvant être éventuellement non imprimée.Figure 3 is a schematic view, in partial section, along III-III of figure 2 in which the same reference figures have been used to designate the different elements of the drying device. It will be noted that, in this version of the drying device, the evacuation drying fluid loaded with solvents is carried out through the center of the device, and that the flow of this drying fluid acts indirectly on the printed face of the material printed via its other face, which can be possibly not printed.

La figure 4 est une vue en coupe représentant une disposition possible des buses 15 du dispositif de séchage 12. Dans cette figure, seules deux buses 15 ont été représentées. Chacune de ces buses 15 est équipée de moyens 23 de transformation de l'écoulement du fluide de séchage qui est laminaire dans la buse 15 et qui deviendra turbulent immédiatement à la sortie de la buse 15. Cet écoulement turbulent est représenté par le signe de référence 28. La matière imprimée 13 se compose d'un support 24, généralement du carton ou toute matière susceptible de recevoir une couche d'encre 25 chargée de solvants. La matière imprimée 13 se déplace à grande vitesse dans le sens indiqué par la flèche 26 en provoquant une couche d'air laminaire 27 qu'il conviendra de briser pour assurer une évacuation facilitée du solvant et par là un séchage efficace. Le mélange constitué par le fluide de séchage et par les solvants, représenté en 32, sera ensuite aspiré par une canalisation d'échappement 29 placée entre deux buses 15 successives. Cette canalisation d'échappement 29 peut être constituée par une simple tubulure. L'emplacement de la canalisation d'échappement 29 est choisi de préférence à distance égale de chacune des deux buses 15 successives. Il est évident que l'on pourrait choisir de placer cette canalisation d'échappement 29 à n'importe quelle distance de chacune des buses 15. Les orifices 30 des buses 15 se présentent sous la forme d'une fente s'étendant sur toute la longueur des buses 15. La tubulure d'échappement 29 comporte une ouverture 31 qui s'étend, elle aussi, sur la longueur de la tubulure d'échappement 29 correspondant à la longueur des buses 15.Figure 4 is a sectional view showing an arrangement nozzles 15 of the drying device 12 possible. In this figure, only two nozzles 15 have been shown. Each of these nozzles 15 is equipped with means 23 for transforming the flow of the drying fluid which is laminar in nozzle 15 and which will become turbulent immediately at the outlet of nozzle 15. This turbulent flow is represented by the sign of reference 28. The printed material 13 consists of a support 24, usually cardboard or any material that can receive a coating ink 25 loaded with solvents. The printed material 13 moves at great speed speed in the direction indicated by arrow 26 causing an air layer laminar 27 which should be broken to ensure easier evacuation of the solvent and thereby efficient drying. The mixture consisting of the drying and by the solvents, represented in 32, will then be vacuumed by a exhaust pipe 29 placed between two successive nozzles 15. This exhaust pipe 29 can be constituted by a simple tube. The location of the exhaust pipe 29 is chosen preferably at equal distance from each of the two successive nozzles 15. It's obvious that one could choose to place this exhaust pipe 29 at any what distance from each of the nozzles 15. The orifices 30 of the nozzles 15 are have the form of a slot extending over the entire length of the nozzles 15. The exhaust manifold 29 has an opening 31 which also extends along the length of the exhaust manifold 29 corresponding to the length of the nozzles 15.

La figure 5 est une vue en coupe d'une buse 15 du dispositif de séchage 12. L'orifice 30 de la buse 15 est munie d'un moyen 23 mécanique de transformation de l'écoulement du flux de fluide de séchage. Ce moyen 23 mécanique de transformation de l'écoulement du flux de fluide de séchage se présente ici sous la forme d'une structure crénelée 33 directement usinée dans l'une des faces de l'extrémité de l'orifice 30 de la buse 15. On pourrait également imaginer d'usiner cette structure crénelée 33 sur chacune des faces de l'extrémité de l'orifice 30 de la buse 15. De préférence, la structure crénelée 33 est disposée parallèlement à la face aval, par rapport au sens de déplacement 26 de la matière imprimée, de l'extrémité de l'orifice 30, c'est à dire parallèlement au sens de passage du fluide de séchage dans la buse 15 (voir figure 4). Cependant une disposition inclinée, suivant un angle compris entre 0 et 90°, de la structure crénelée 33 par rapport à la face de l'extrémité de l'orifice 30 est envisageable. Une disposition perpendiculaire de la structure crénelée 33 par rapport à la face de l'extrémité de l'orifice 30, c'est à dire perpendiculairement au sens de passage du fluide de séchage dans la buse 15, est également envisageable (voir figure 5). Il est à remarquer que l'on pourrait également prévoir de rapporter une pièce présentant une structure crénelée sur l'une des faces de l'orifice 30, cela par exemple dans le cas d'un "rétrofit" sur des buses à fente existantes. Il a été démontré au cours d'essais de laboratoire qu'un profil crénelé en dents de scie provoque un écoulement turbulent de grande intensité permettant de ce fait d'assurer une excellente destruction de l'écoulement laminaire présent au voisinage de la matière imprimée autorisant une amélioration importante de la rapidité du séchage de la matière imprimée, cela pour des vitesses de déplacement de la matière imprimée comprises entre 100 et 1000 m/min. Dans l'exécution que nous venons de décrire, les buses 15 sont disposées perpendiculairement par rapport à la surface de la matière imprimée 13 et à proximité de cette surface. Une disposition inclinée des buses 15 par rapport à la surface de la matière imprimée 13 peut également être envisagée. Bien évidemment, l'invention n'est pas limitée à cet exemple. A la limite et si nécessaire, chaque extrémité des orifices 30 des buses 15 pourrait être équipée de deux structures crénelées 33.Figure 5 is a sectional view of a nozzle 15 of the device drying 12. The orifice 30 of the nozzle 15 is provided with a mechanical means 23 for transformation of the flow of the drying fluid flow. This means 23 mechanical transformation of the drying fluid flow present here in the form of a crenellated structure 33 directly machined in one of the faces of the end of the orifice 30 of the nozzle 15. We could also imagine machining this crenellated structure 33 on each of the faces from the end of the orifice 30 of the nozzle 15. Preferably, the crenellated structure 33 is arranged parallel to the downstream face, with respect to the direction of displacement 26 of the printed material, from the end of the orifice 30, it is say parallel to the direction of passage of the drying fluid in the nozzle 15 (see figure 4). However an inclined arrangement, at an angle included between 0 and 90 °, of the crenellated structure 33 relative to the face of the end of the orifice 30 is conceivable. A perpendicular arrangement of the structure crenellated 33 relative to the face of the end of the orifice 30, that is to say perpendicular to the direction of flow of the drying fluid through the nozzle 15, is also conceivable (see FIG. 5). It should be noted that could also plan to bring a piece with a structure crenellated on one of the faces of the orifice 30, this for example in the case of a "retrofits" on existing slot nozzles. It has been shown in tests laboratory that a serrated profile sawtooth causes a flow turbulent high intensity thereby ensuring excellent destruction of the laminar flow present in the vicinity of the material printed allowing a significant improvement in the speed of drying of the printed material, this for material displacement speeds printed between 100 and 1000 m / min. In the execution that we we have just described, the nozzles 15 are arranged perpendicularly by relative to the surface of the printed material 13 and close to this surface. An inclined arrangement of the nozzles 15 relative to the surface of the material print 13 can also be considered. Obviously, the invention is not not limited to this example. At the limit and if necessary, each end of the orifices 30 of the nozzles 15 could be fitted with two crenellated structures 33.

La figure 6 est une vue en perspective d'une réalisation d'une des buses du dispositif de séchage. L'orifice 30 de la buse 15 est équipée d'un moyen 23 mécanique de transformation de l'écoulement du flux de fluide de séchage. Le moyen 23 mécanique de transformation de l'écoulement du flux de fluide de séchage est, dans la figure présente, perpendiculaire à la circulation du fluide de séchage au travers de l'orifice 30 de la buse 15. Le moyen 23 mécanique de transformation pourrait aussi être parallèle à la circulation du fluide de séchage au travers de l'orifice 30 de la buse 15 (voir figure 4)Figure 6 is a perspective view of an embodiment of one of drying device nozzles. The orifice 30 of the nozzle 15 is equipped with a mechanical means 23 for transforming the flow of the fluid flow from drying. The mechanical means 23 for transforming the flow of the flow of drying fluid is, in the figure shown, perpendicular to the circulation drying fluid through the orifice 30 of the nozzle 15. The means 23 transformation mechanics could also be parallel to the circulation of the drying fluid through the orifice 30 of the nozzle 15 (see Figure 4)

Claims (10)

Dispositif pour le séchage d'une matière imprimée (13), en bande ou en feuille, utilisant un fluide de séchage propulsé en direction de la matière imprimée au travers de buses (15) possédant chacune un orifice de soufflage (30) et destinées à souffler un fluide de séchage chauffé par des corps de chauffe (16), lesdites buses (15) étant agencées dans une enceinte (14) d'un dispositif de séchage (12), ledit fluide de séchage présentant, au voisinage de ladite matière imprimée (13) un écoulement turbulent, ledit fluide de séchage étant ensuite extrait de l'enceinte (14) par une canalisation d'échappement (29), caractérisé en ce que ledit écoulement turbulent est créé immédiatement à la sortie de l'orifice de soufflage (30) desdites buses (15) par des moyens (23) de transformation d'un courant laminaire en un courant turbulent.Device for drying a printed material (13), in a strip or in a sheet, using a drying fluid propelled towards the printed material through nozzles (15) each having a blowing orifice (30) and intended for blowing a drying fluid heated by heating bodies (16), said nozzles (15) being arranged in an enclosure (14) of a drying device (12), said drying fluid having, in the vicinity of said printed material (13) a turbulent flow, said drying fluid then being extracted from the enclosure (14) by an exhaust pipe (29), characterized in that said turbulent flow is created immediately at the outlet of the blowing orifice (30) of said nozzles (15) by means (23) for transforming a laminar current into a turbulent current. Dispositif pour le séchage d'une matière imprimée (13) selon la revendication 1, caractérisé en ce que les buses (15) sont disposées perpendiculairement par rapport à la surface de la matière imprimée (13) et à proximité de cette surface.Device for drying a printed material (13) according to claim 1, characterized in that the nozzles (15) are arranged perpendicular to and near this surface of the printed material (13). Dispositif pour le séchage d'une matière imprimée (13) selon la revendication 1, caractérisé en ce que les buses (15) sont disposées obliquement par rapport à la surface de la matière imprimée (13) et à proximité de cette surface.Device for drying a printed material (13) according to claim 1, characterized in that the nozzles (15) are arranged obliquely with respect to the surface of the printed material (13) and close to this surface. Dispositif pour le séchage d'une matière imprimée (13) selon la revendication 1, caractérisé en ce que le fluide de séchage est extrait de l'enceinte (14) au travers d'une canalisation d'échappement (29) située, entre deux buses (15) successives.Device for drying a printed material (13) according to claim 1, characterized in that the drying fluid is extracted from the enclosure (14) through an exhaust pipe (29) located between two successive nozzles (15). Dispositif pour le séchage d'une matière imprimée (13) selon la revendication 4, caractérisé en ce que la canalisation d'échappement (29) est située, entre deux buses (15) successives, à égale distance de chacune desdites buses (15).Device for drying a printed material (13) according to claim 4, characterized in that the exhaust pipe (29) is located, between two successive nozzles (15), equidistant from each of said nozzles (15) . Dispositif pour le séchage d'une matière imprimée (13) selon la revendication 1, caractérisé en ce que les moyens (23) de transformation d'un courant laminaire en un courant turbulent sont des moyens mécaniques.Device for drying a printed material (13) according to claim 1, characterized in that the means (23) for transforming a laminar current into a turbulent current are mechanical means. Dispositif pour le séchage d'une matière imprimée (13) selon la revendication 6, caractérisé en ce que les moyens mécaniques de transformation d'un courant laminaire en un courant turbulent sont constitués par une structure crénelée (33) aménagée dans l'extrémité d'au moins l'une des faces de l'orifice de soufflage (30) et que ladite structure crénelée (33) est disposée parallèlement par rapport à la face de l'orifice de soufflage (30).Device for drying a printed material (13) according to claim 6, characterized in that the mechanical means for transforming a laminar current into a turbulent current consist of a crenellated structure (33) arranged in the end d 'at least one of the faces of the blowing orifice (30) and that said crenellated structure (33) is arranged parallel to the face of the blowing orifice (30). Dispositif pour le séchage d'une matière imprimée (13) selon la revendication 7, caractérisé en ce que la structure crénelée (33) est aménagée dans l'extrémité de la face aval, par rapport au sens de déplacement (26) de la matière imprimée (13), de l'orifice de soufflage (30).Device for drying a printed material (13) according to claim 7, characterized in that the crenellated structure (33) is arranged in the end of the downstream face, relative to the direction of movement (26) of the material printed (13), from the blowing orifice (30). Dispositif pour le séchage d'une matière imprimée (13) selon la revendication 7, caractérisé en ce que les moyens mécaniques de transformation d'un courant laminaire en un courant turbulent sont constitués par une pièce présentant une structure crénelée (33) rapportée sur au moins l'une des faces de l'orifice de soufflage (30).Device for drying a printed material (13) according to claim 7, characterized in that the mechanical means for transforming a laminar current into a turbulent current consist of a part having a crenellated structure (33) attached to the at least one of the faces of the blowing orifice (30). Dispositif pour le séchage d'une matière imprimée (13) selon la revendication 9, caractérisé en ce que la structure crénelée (33) est disposée suivant un angle de 0 à 90° par rapport à la face d'au moins l'une des faces de l'orifice de soufflage (30).Device for drying a printed material (13) according to claim 9, characterized in that the crenellated structure (33) is arranged at an angle of 0 to 90 ° relative to the face of at least one of the faces of the blowing orifice (30).
EP03021067A 2002-10-01 2003-09-18 Apparatus for drying printed matter Ceased EP1406055A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH16402002 2002-10-01
CH01640/02A CH695677A5 (en) 2002-10-01 2002-10-01 Apparatus for drying a printed matter.

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EP1406055A1 true EP1406055A1 (en) 2004-04-07

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US (1) US20040060193A1 (en)
EP (1) EP1406055A1 (en)
JP (1) JP4190382B2 (en)
KR (1) KR20040030355A (en)
CN (1) CN1491796A (en)
AU (1) AU2003252197A1 (en)
BR (1) BR0304277A (en)
CA (1) CA2442663A1 (en)
CH (1) CH695677A5 (en)
TW (1) TWI228456B (en)

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EP2463100B1 (en) 2010-12-03 2013-07-17 Heidelberger Druckmaschinen AG Machine for processing brackets, in particular bracket pressure machine
CN102514370A (en) * 2011-12-08 2012-06-27 杨峥雄 Drying box of printing coating machine and energy saving method
CN102889778B (en) * 2012-10-24 2015-06-03 俞培忠 Energy-saving oven equipment
CN105584208B (en) * 2016-02-05 2018-04-10 西安理工大学 A kind of design method of gravure press dryer tuyere
CN106996058B (en) * 2017-04-10 2018-07-20 安徽江南春包装科技有限公司 It is a kind of to recycle distinguished and admirable multi-panel formula glass applique air-dry frame
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Publication number Publication date
US20040060193A1 (en) 2004-04-01
JP4190382B2 (en) 2008-12-03
CH695677A5 (en) 2006-07-31
KR20040030355A (en) 2004-04-09
TW200405859A (en) 2004-04-16
CA2442663A1 (en) 2004-04-01
TWI228456B (en) 2005-03-01
CN1491796A (en) 2004-04-28
BR0304277A (en) 2004-08-31
AU2003252197A1 (en) 2004-04-22
JP2004122787A (en) 2004-04-22

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