EP0719401B1 - Contact-free sheet material diverting device - Google Patents

Contact-free sheet material diverting device Download PDF

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Publication number
EP0719401B1
EP0719401B1 EP94929584A EP94929584A EP0719401B1 EP 0719401 B1 EP0719401 B1 EP 0719401B1 EP 94929584 A EP94929584 A EP 94929584A EP 94929584 A EP94929584 A EP 94929584A EP 0719401 B1 EP0719401 B1 EP 0719401B1
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EP
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Prior art keywords
cylindrical surface
sheet material
emitters
contact
air cushion
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EP94929584A
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German (de)
French (fr)
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EP0719401A1 (en
Inventor
Grégoire LIZE
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Infra Rouge System
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Infra Rouge System
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    • 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
    • F26B13/101—Supporting materials without tension, e.g. on or between foraminous belts
    • F26B13/104—Supporting materials without tension, e.g. on or between foraminous belts supported by fluid jets only; Fluid blowing arrangements for flotation dryers, e.g. coanda nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection

Definitions

  • the present invention relates to a non-contact deflection device for sheet material, this device being of the type using those of an air cushion established around a substantially cylindrical surface placed at a place where the treated sheet material "in the process" must be diverted.
  • Deviation devices of this kind are known, for example, from documents GB-A-2126974 and EP-A-0507218.
  • This invention relates to the technical field of manufacturing, processing and processing of sheet, strip or web materials, such as paper, cardboard, fabric, synthetic film, etc. which pass through a machine or industrial installation. , where the sheet, strip or sheet undergoes a certain number of changes of direction along its path which causes it to pass in front of successive work stations; the non-contact deflection, thanks to an air cushion, here prevents friction and smearing.
  • Machines or installations of this kind often include heating means produced in the form of electric emitters of infrared radiation, which are used in particular for drying, for example drying the ink in the case of printing machines, or elimination of water in paper-making installations, this type of emitter allowing rapid temperature rises and providing great flexibility of use (absence of thermal inertia).
  • the infrared radiation drying means usually take place on the rectilinear sections of the path of the sheet material, between two successive deflection cylinders with or without contact (see for example documents EP-A-0346081, WO-A-8705644 and FR -A-2247687, as well as the aforementioned document EP-A-0507218).
  • the machines or The installations in question currently remain very bulky, the deflection cylinders constituting bulky organs which have no active role on the sheet material, strip or sheet treated "on parade".
  • Document GB-A-1079677 also discloses a contactless deflection device for sheet or strip material in accordance with the preamble of claim 1.
  • this device on the one hand, means are provided for blowing gas, in particular air creating an air cushion for non-contact deflection, and on the other hand, radiation emitters acting on the portion of sheet or strip material being deflected, to ensure its drying.
  • the radiation emitters are electromagnetic elements arranged on either side of the sheet or strip to be dried, that is to say on the inside and outside of the sheet, and generating through this sheet a high frequency electromagnetic field. The result is a complicated and bulky arrangement.
  • the invention aims to avoid all these drawbacks, by providing a non-contact deflection device with heating / drying means which is compact and effective for all applications.
  • the subject of the invention is a contactless deflection device as defined in claim 1.
  • This device is characterized in that the transmitters of radiation are infrared emitters which are arranged only on the inner side of the sheet material being deflected, in or under said cylindrical surface, and whose radiation is directed radially outward from said cylindrical surface, towards the portion of sheet material being deflected around this cylindrical surface, the flow of blown air ensuring the cooling of the infrared emitters simultaneously with the formation of the air cushion.
  • the device which is the subject of the present invention ensures, within the same volume, the contactless deflection of the sheet material, and the heat treatment of this sheet material, that is to say its heating by infrared radiation. .
  • the invention therefore provides a considerable saving of space, for the machines and installations concerned which can thus be constructed in a much more compact manner.
  • the present invention improves the operation of these emitters and ensures their preservation, since the blown air flow cools the infrared emitters simultaneously with the formation of the air cushion.
  • the air flow itself contributes to the drying of the sheet material, so that this drying is accelerated without increasing the total power required.
  • the deflection device object of the invention comprises a multiplicity of infrared emitters, arranged in lines and / or in rows following the profile of said cylindrical surface, passages for the blown air being provided between these infrared emitters.
  • the emitters of infrared radiation each usually consisting of a tube placed at the focus of a reflector, can become dirty in particular in applications in the field of stationery. It is therefore useful to protect them against soiling.
  • This additional problem is solved, in the case of the contactless deflection device which is the subject of the invention, still providing around the aforementioned cylindrical surface a rounded protective screen made of material transparent to infrared radiation, such as quartz glass, preferably mounted removably and interchangeably, and provided with openings or interruptions for the passage of the air flow emitted by the blowing means.
  • the device ensures in a machine or industrial installation the deflection, at an angle A, of a sheet material 1 treated "in the process", which moves according to a arrow F.
  • This device also provides heating of the sheet material 1, in its portion being deflected, in particular with a view to drying this material 1 within the framework of a manufacturing, transformation or treatment process.
  • the device comprises a box 2, more or less elongated in the horizontal direction, which can be rotatably mounted about a horizontal axis 3.
  • the inside of the box 2 is supplied with supply air by suitable means, as indicated diagrammatically by an arrow G.
  • the box 2 In its front part, the box 2 forms a cylindrical surface 4, which can in particular extend along a half-cylinder, the generatrices of which are horizontal. Openings 5 are distributed over the extent of the cylindrical surface 4, and deliver air jets to form, between this cylindrical surface 4 and the portion in the course of deflection of the sheet material 1, an air cushion 6.
  • the air pressure is regulated by known means, not shown, to allow good tension of the sheet material 1.
  • each infrared emitter 7 has a reflector 8, oriented so as to direct the infrared radiation radially outwards, therefore towards the portion of the sheet material 1 being deflected on the cushion of air 6.
  • the emitters 7, of known structure can provide, depending on the applications, "short” or “medium” infrared radiation (wavelengths between 0.8 m and 10 m).
  • the openings 5 emitting the air jets for the formation of the air cushion 6 are arranged in the gaps which remain between the infrared emitters 7.
  • the flow of blown air is heated, for example from an ambient temperature of 20 ° C. to a temperature of the order of 100 ° C., which ensures the cooling of the infrared emitters 7 while improving the drying of the sheet material 1.
  • the device also comprises a protective screen 9, made of quartz glass transparent to infrared radiation, of general semi-circular profile corresponding to that of the cylindrical surface 4.
  • the rounded protective screen 9 is here composed of quartz glass blades, placed in front of the infrared emitters 7 to protect them from dirt, the blades being separated from each other by intervals which correspond to the openings 5 for the passage of the blown air.
  • FIG. 3 shows another embodiment of the device according to the invention, in which the infrared emitters 7 are arranged under the cylindrical surface 4, substantially in a diametral plane. These emitters 7 are always oriented in such a way that their radiation is directed radially towards the outside of the cylindrical surface 4, in the direction of the portion of the sheet material 1 being deflected on the air cushion 6.
  • the protective screen 9 comprises solid parts, between which extend openings 5 for blowing air.
  • This protective screen 9 is removably and interchangeably mounted on the box 2, so that it can be easily and quickly exchanged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Laminated Bodies (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Abstract

PCT No. PCT/FR94/01165 Sec. 371 Date Apr. 3, 1996 Sec. 102(e) Date Apr. 3, 1996 PCT Filed Oct. 5, 1994 PCT Pub. No. WO95/10012 PCT Pub. Date Apr. 13, 1995A device for diverting sheet, web or mat material treated continuously uses an air cushion (6) formed about a cylindrical surface (4). Infrared transmitters (7), whose radiation is directed to a portion of the material (1) being diverted, are provided in or under the cylindrical surface (4), in addition to the air-blowing means (5) generating the air cushion (6). The same volume therefore houses means for diverting the material (1) and means for heating it, especially in order to dry it. At the same time that the blown air flow generates the air cushion (6), it also cools the infrared transmitters (7). Application, in particular, in the manufacture, transformation and treatment of materials such paper, fabric and synthetic film.

Description

La présente invention concerne un dispositif de déviation sans contact pour matériau en feuille, ce dispositif étant du genre de ceux utilisant un coussin d'air établi autour d'une surface sensiblement cylindrique placée à un endroit où le matériau en feuille traité "au défilé" doit être dévié. Des dispositifs de déviation de ce genre sont connus, par exemple, par les documents GB-A-2126974 et EP-A-0507218.The present invention relates to a non-contact deflection device for sheet material, this device being of the type using those of an air cushion established around a substantially cylindrical surface placed at a place where the treated sheet material "in the process" must be diverted. Deviation devices of this kind are known, for example, from documents GB-A-2126974 and EP-A-0507218.

Cette invention concerne le domaine technique de la fabrication, de la transformation et du traitement de matériaux en feuille, en bande ou en nappe, tels que papier, carton, tissu, film synthétique, etc... qui défilent dans une machine ou installation industrielle, où la feuille, bande ou nappe subit un certain nombre de changements de direction sur son trajet qui la fait passer devant des postes de travail successifs ; la déviation sans contact, grâce à un coussin d'air, évite ici le frottement et le maculage.This invention relates to the technical field of manufacturing, processing and processing of sheet, strip or web materials, such as paper, cardboard, fabric, synthetic film, etc. which pass through a machine or industrial installation. , where the sheet, strip or sheet undergoes a certain number of changes of direction along its path which causes it to pass in front of successive work stations; the non-contact deflection, thanks to an air cushion, here prevents friction and smearing.

Les machines ou installations de ce genre comportent souvent des moyens de chauffage réalisés sous la forme d'émetteurs électriques de rayonnement infrarouge, qui sont utilisés notamment pour le séchage, par exemple le séchage de l'encre dans le cas des machines à imprimer, ou l'élimination de l'eau dans les installations de fabrication de papier, ce genre d'émetteurs permettant des montées en température rapides et procurant une grande souplesse d'utilisation (absence d'inertie thermique). Les moyens de séchage par rayonnement infrarouge prennent habituellement place sur les tronçons rectilignes du trajet du matériau en feuille, entre deux cylindres successifs de déviation avec ou sans contact (voir par exemple les documents EP-A-0346081, WO-A-8705644 et FR-A-2247687, ainsi que le document EP-A-0507218 précité). Il en résulte que les machines ou installations en cause restent actuellement très encombrantes, les cylindres de déviation constituant des organes volumineux qui n'ont aucun rôle actif sur le matériau en feuille, bande ou nappe traité "au défilé".Machines or installations of this kind often include heating means produced in the form of electric emitters of infrared radiation, which are used in particular for drying, for example drying the ink in the case of printing machines, or elimination of water in paper-making installations, this type of emitter allowing rapid temperature rises and providing great flexibility of use (absence of thermal inertia). The infrared radiation drying means usually take place on the rectilinear sections of the path of the sheet material, between two successive deflection cylinders with or without contact (see for example documents EP-A-0346081, WO-A-8705644 and FR -A-2247687, as well as the aforementioned document EP-A-0507218). As a result, the machines or The installations in question currently remain very bulky, the deflection cylinders constituting bulky organs which have no active role on the sheet material, strip or sheet treated "on parade".

On connaît encore, par le document GB-A-1079677, un dispositif de déviation sans contact pour matériau en feuille ou en bande conforme au préambule de la revendication 1. Dans ce dispositif, il est prévu, d'une part, des moyens de soufflage de gaz, notamment d'air créant un coussin d'air pour la déviation sans contact, et d'autre part, des émetteurs de rayonnement agissant sur la portion de matériau en feuille ou bande en cours de déviation, pour assurer son séchage. Dans ce document, les émetteurs de rayonnement sont des éléments électromagnétiques disposés de part et d'autre de la feuille ou bande à sécher, c'est-à-dire du côté intérieur et du côté extérieur de la feuille, et générant au travers de cette feuille un champ électromagnétique à haute fréquence. Il en résulte une disposition compliquée et encombrante. La présence d'émetteurs de rayonnement du côté extérieur de la feuille limite l'épaisseur du coussin d'air et entraîne des difficultés d'accès pour la maintenance ; elle interdit aussi toute variation de l'angle de déviation, qui est "figé" par exemple à une valeur égale à 180°. Par ailleurs, l'utilisation d'un champ électromagnétique à haute fréquence convient seulement à l'élimination de l'eau et n'est pas adaptée à des applications plus diversifiées.Document GB-A-1079677 also discloses a contactless deflection device for sheet or strip material in accordance with the preamble of claim 1. In this device, on the one hand, means are provided for blowing gas, in particular air creating an air cushion for non-contact deflection, and on the other hand, radiation emitters acting on the portion of sheet or strip material being deflected, to ensure its drying. In this document, the radiation emitters are electromagnetic elements arranged on either side of the sheet or strip to be dried, that is to say on the inside and outside of the sheet, and generating through this sheet a high frequency electromagnetic field. The result is a complicated and bulky arrangement. The presence of radiation emitters on the outside of the sheet limits the thickness of the air cushion and leads to difficulties of access for maintenance; it also prohibits any variation of the deflection angle, which is "frozen" for example at a value equal to 180 °. Furthermore, the use of a high frequency electromagnetic field is only suitable for removing water and is not suitable for more diverse applications.

L'invention vise à éviter tous ces inconvénients, en fournissant un dispositif de déviation sans contact avec moyens de chauffage/séchage qui soit compact et efficace pour toutes applications.The invention aims to avoid all these drawbacks, by providing a non-contact deflection device with heating / drying means which is compact and effective for all applications.

A cet effet, l'invention a pour objet un dispositif de déviation sans contact tel que défini en revendication 1. Ce dispositif est caractérisé en ce que les émetteurs de rayonnement sont des émetteurs infrarouges qui sont disposés uniquement du côté intérieur du matériau en feuille en cours de déviation, dans ou sous ladite surface cylindrique, et dont le rayonnement est dirigé radialement vers l'extérieur de ladite surface cylindrique, en direction de la portion de matériau en feuille en cours de déviation autour de cette surface cylindrique, le flux d'air soufflé assurant le refroidissement des émetteurs infrarouges simultanément à la formation du coussin d'air.To this end, the subject of the invention is a contactless deflection device as defined in claim 1. This device is characterized in that the transmitters of radiation are infrared emitters which are arranged only on the inner side of the sheet material being deflected, in or under said cylindrical surface, and whose radiation is directed radially outward from said cylindrical surface, towards the portion of sheet material being deflected around this cylindrical surface, the flow of blown air ensuring the cooling of the infrared emitters simultaneously with the formation of the air cushion.

Ainsi, le dispositif objet de la présente invention assure, à l'intérieur du même volume, la déviation sans contact du matériau en feuille, et le traitement thermique de ce matériau en feuille, c'est-à-dire son chauffage par rayonnement infrarouge. En confondant les deux fonctions dans le même volume, l'invention procure donc un gain de place considérable, pour les machines et installations concernées qui peuvent être ainsi construites de façon beaucoup plus compacte.Thus, the device which is the subject of the present invention ensures, within the same volume, the contactless deflection of the sheet material, and the heat treatment of this sheet material, that is to say its heating by infrared radiation. . By confusing the two functions in the same volume, the invention therefore provides a considerable saving of space, for the machines and installations concerned which can thus be constructed in a much more compact manner.

De plus, en combinant des moyens de soufflage et des émetteurs de rayonnement infrarouge, la présente invention améliore le fonctionnement de ces émetteurs et assure leur préservation, puisque le flux d'air soufflé assure le refroidissement des émetteurs infrarouges simultanément à la formation du coussin d'air. En outre, dans le cas où les émetteurs infrarouges doivent assurer un séchage, le flux d'air contribue lui-même au séchage du matériau en feuille, si bien que ce séchage se trouve accéléré sans augmentation de la puissance totale nécessaire.In addition, by combining blowing means and infrared emitters, the present invention improves the operation of these emitters and ensures their preservation, since the blown air flow cools the infrared emitters simultaneously with the formation of the air cushion. In addition, in the case where the infrared emitters must ensure drying, the air flow itself contributes to the drying of the sheet material, so that this drying is accelerated without increasing the total power required.

Dans une forme de réalisation particulière, le dispositif de déviation objet de l'invention comprend une multiplicité d'émetteurs infrarouges, disposés en lignes et/ou en rangées en suivant le profil de ladite surface cylindrique, des passages pour l'air soufflé étant ménagés entre ces émetteurs infrarouges.In a particular embodiment, the deflection device object of the invention comprises a multiplicity of infrared emitters, arranged in lines and / or in rows following the profile of said cylindrical surface, passages for the blown air being provided between these infrared emitters.

Les émetteurs de rayonnement infrarouge, constitués chacun habituellement d'un tube placé au foyer d'un réflecteur, peuvent s'encrasser notamment dans les applications au domaine de la papeterie. Il est donc utile de les protéger contre les salissures. Ce problème annexe est résolu, dans le cas du dispositif de déviation sans contact objet de l'invention, en prévoyant encore autour de la surface cylindrique précitée un écran de protection arrondi en matériau transparent au rayonnement infrarouge, tel que verre quartz, monté de préférence de façon amovible et interchangeable, et pourvu d'ouvertures ou d'interruptions pour le passage du flux d'air émis par les moyens de soufflage.The emitters of infrared radiation, each usually consisting of a tube placed at the focus of a reflector, can become dirty in particular in applications in the field of stationery. It is therefore useful to protect them against soiling. This additional problem is solved, in the case of the contactless deflection device which is the subject of the invention, still providing around the aforementioned cylindrical surface a rounded protective screen made of material transparent to infrared radiation, such as quartz glass, preferably mounted removably and interchangeably, and provided with openings or interruptions for the passage of the air flow emitted by the blowing means.

De toute façon, l'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemples, deux formes d'exécution de ce dispositif de déviation sans contact pour matériau en feuille :

  • Figure 1 est une vue de face d'un dispositif conforme à la présente invention ;
  • Figure 2 est une vue en coupe transversale, à plus grande échelle, du dispositif de figure 1 ;
  • Figure 3 est une vue similaire à figure 2, montrant une variante de ce dispositif.
In any case, the invention will be better understood with the aid of the description which follows, with reference to the appended schematic drawing showing, by way of examples, two embodiments of this non-contact deflection device for sheet material :
  • Figure 1 is a front view of a device according to the present invention;
  • Figure 2 is a cross-sectional view, on a larger scale, of the device of Figure 1;
  • Figure 3 is a view similar to Figure 2, showing a variant of this device.

Le dispositif, dont une première forme de réalisation est représentée aux figures 1 et 2, assure dans une machine ou installation industrielle la déviation, selon un angle A, d'un matériau en feuille 1 traité "au défilé", qui se déplace selon une flèche F. Ce dispositif assure en outre un chauffage du matériau en feuille 1, dans sa portion en cours de déviation, notamment en vue du séchage de ce matériau 1 dans le cadre d'un processus de fabrication, de transformation ou de traitement.The device, a first embodiment of which is shown in FIGS. 1 and 2, ensures in a machine or industrial installation the deflection, at an angle A, of a sheet material 1 treated "in the process", which moves according to a arrow F. This device also provides heating of the sheet material 1, in its portion being deflected, in particular with a view to drying this material 1 within the framework of a manufacturing, transformation or treatment process.

Le dispositif comprend un caisson 2, plus ou moins allongé dans le sens horizontal, qui peut être monté rotatif autour d'un axe horizontal 3. L'intérieur du caisson 2 est alimenté en air de soufflage par des moyens appropriés, comme indiqué schématiquement par une flèche G.The device comprises a box 2, more or less elongated in the horizontal direction, which can be rotatably mounted about a horizontal axis 3. The inside of the box 2 is supplied with supply air by suitable means, as indicated diagrammatically by an arrow G.

Dans sa partie avant, le caisson 2 forme une surface cylindrique 4, pouvant notamment s'étendre suivant un demi-cylindre, dont les génératrices sont horizontales. Des ouvertures 5 sont réparties sur l'étendue de la surface cylindrique 4, et délivrent des jets d'air pour former, entre cette surface cylindrique 4 et la portion en cours de déviation du matériau en feuille 1, un coussin d'air 6. La pression de l'air est régulée par des moyens connus non représentés, pour permettre une bonne tension du matériau en feuille 1.In its front part, the box 2 forms a cylindrical surface 4, which can in particular extend along a half-cylinder, the generatrices of which are horizontal. Openings 5 are distributed over the extent of the cylindrical surface 4, and deliver air jets to form, between this cylindrical surface 4 and the portion in the course of deflection of the sheet material 1, an air cushion 6. The air pressure is regulated by known means, not shown, to allow good tension of the sheet material 1.

Dans la surface cylindrique 4 sont disposés des émetteurs électriques de rayonnement infrarouge 7, disposés en lignes et en rangées en suivant le profil général semi-circulaire de cette surface cylindrique 4. Chaque émetteur infrarouge 7 possède un réflecteur 8, orienté de manière à diriger le rayonnement infrarouge radialement vers l'extérieur, donc vers la portion du matériau en feuille 1 en cours de déviation sur le coussin d'air 6. Les émetteurs 7, de structure connue, peuvent fournir selon les applications un rayonnement infrarouge "court" ou "moyen" (longueurs d'onde comprises entre 0,8 m et 10 m). Les ouvertures 5, émettant les jets d'air pour la formation du coussin d'air 6, sont disposées dans les intervalles qui subsistent entre les émetteurs infrarouges 7.In the cylindrical surface 4 are arranged electric emitters of infrared radiation 7, arranged in rows and rows following the general semi-circular profile of this cylindrical surface 4. Each infrared emitter 7 has a reflector 8, oriented so as to direct the infrared radiation radially outwards, therefore towards the portion of the sheet material 1 being deflected on the cushion of air 6. The emitters 7, of known structure, can provide, depending on the applications, "short" or "medium" infrared radiation (wavelengths between 0.8 m and 10 m). The openings 5 emitting the air jets for the formation of the air cushion 6 are arranged in the gaps which remain between the infrared emitters 7.

On notera qu'au contact des émetteurs infrarouges 7, le flux d'air soufflé est réchauffé, par exemple depuis une température ambiante de 20°C jusqu'à une température de l'ordre de 100°C, ce qui assure le refroidissement des émetteurs infrarouge 7 tout en améliorant le séchage du matériau en feuille 1.It will be noted that in contact with the infrared emitters 7, the flow of blown air is heated, for example from an ambient temperature of 20 ° C. to a temperature of the order of 100 ° C., which ensures the cooling of the infrared emitters 7 while improving the drying of the sheet material 1.

Comme le montre plus particulièrement la figure 2, le dispositif comprend encore un écran de protection 9, en verre quartz transparent au rayonnement infrarouge, de profil général semi-circulaire correspondant à celui de la surface cylindrique 4. L'écran de protection arrondi 9 est composé ici de lames de verre quartz, mises en place devant les émetteurs infrarouges 7 pour les protéger contre les salissures, les lames étant séparées les unes des autres par des intervalles qui correspondent aux ouvertures 5 de passage de l'air soufflé.As shown more particularly in FIG. 2, the device also comprises a protective screen 9, made of quartz glass transparent to infrared radiation, of general semi-circular profile corresponding to that of the cylindrical surface 4. The rounded protective screen 9 is here composed of quartz glass blades, placed in front of the infrared emitters 7 to protect them from dirt, the blades being separated from each other by intervals which correspond to the openings 5 for the passage of the blown air.

La figure 3 montre une autre forme de réalisation du dispositif selon l'invention, dans laquelle les émetteurs infrarouges 7 sont disposés sous la surface cylindrique 4, sensiblement dans un plan diamétral. Ces émetteurs 7 sont toujours orientés de telle manière que leur rayonnement soit dirigé radialement vers l'extérieur de la surface cylindrique 4, en direction de la portion du matériau en feuille 1 en cours de déviation sur le coussin d'air 6.FIG. 3 shows another embodiment of the device according to the invention, in which the infrared emitters 7 are arranged under the cylindrical surface 4, substantially in a diametral plane. These emitters 7 are always oriented in such a way that their radiation is directed radially towards the outside of the cylindrical surface 4, in the direction of the portion of the sheet material 1 being deflected on the air cushion 6.

Un écran de protection arrondi 9 en verre quartz, transparent au rayonnement infrarouge, est ici disposé suivant la surface cylindrique 4 en avant des émetteurs infrarouges 7. L'écran de protection 9 comporte des parties pleines, entre lesquelles s'étendent des ouvertures 5 pour le soufflage de l'air. Cet écran de protection 9 est monté de façon amovible et interchangeable sur le caisson 2, de manière à pouvoir être facilement et rapidement échangé.A rounded protective screen 9 made of quartz glass, transparent to infrared radiation, is here arranged along the cylindrical surface 4 in front of the infrared emitters 7. The protective screen 9 comprises solid parts, between which extend openings 5 for blowing air. This protective screen 9 is removably and interchangeably mounted on the box 2, so that it can be easily and quickly exchanged.

Il va de soi que l'invention ne se limite pas aux seules formes d'exécution de ce dispositif de déviation sans contact pour matériau en feuille qui ont été décrites ci-dessus, à titre d'exemples ; elle en embrasse, au contraire, toutes les variantes de réalisation et d'application couvertes par la revendication 1. Ainsi l'on ne s'éloignerait pas du cadre de l'invention :

  • en modifiant le nombre, la disposition (par exemple en quinconce) ou la densité des émetteurs infrarouges, en fonction de la puissance totale nécessaire et de la puissance unitaire de ces émetteurs ;
  • en prévoyant pour les émetteurs infrarouges tout type de fonctionnement, tel qu'un allumage permanent ou discontinu ;
  • en adaptant le dispositif à tout angle désiré de déviation du matériau en feuille ;
  • en destinant le dispositif à la déviation de matériaux en feuille, en bande ou en nappe de toute nature : papier, carton, tissu, tissu enduit, film synthétique, etc..., et en incorporant ce dispositif dans tout type de machine ou d'installation, pour des opérations de fabrication, de transformation ou de traitement de toutes sortes.
It goes without saying that the invention is not limited to the sole embodiments of this contactless deflection device for sheet material which have been described above, by way of examples; on the contrary, it embraces all the variant embodiments and applications covered by claim 1. Thus, one would not depart from the scope of the invention:
  • by modifying the number, the arrangement (for example in staggered rows) or the density of the infrared transmitters, according to the total power required and the unit power of these transmitters;
  • by providing any type of operation for infrared transmitters, such as permanent or discontinuous ignition;
  • by adapting the device to any desired angle of deflection of the sheet material;
  • by making the device suitable for diverting sheet, strip or web material of any kind: paper, cardboard, fabric, coated fabric, synthetic film, etc., and by incorporating this device into any type of machine or installation for manufacturing, processing or processing operations of all kinds.

Claims (3)

  1. A contact-free diverting device for sheet, strip, or web material (1) using an air cushion (6) around a generally cylindrical surface (4) located where the sheet material (1) being treated "on the fly" should be diverted, wherein there is provided, on or underneath the cylindrical surface (4), blowing means creating the air cushion (6) for contact-free diversion, the device further comprising radiation emitters (7), which act on the portion of the sheet material (1) being diverted around said cylindrical surface (4), characterized in that the radiation emitters are infrared emitters (7), which are located only on the inner side of the sheet material (1) being diverted, on or underneath said cylindrical surface (4), and radiation of which is directed radially outward of said cylindrical surface (4) toward that portion of the sheet material (1) being diverted around this cylindrical surface (4), the pressurized air flow cooling the infrared emitters (7), while forming the air cushion (6).
  2. The contact-free diverting device for sheet material according to claim 1, characterized in that it has a multiplicity of infrared emitters (7) arrayed in rows and/or columns over said cylindrical surface (4), apertures (5) for the pressurized air being formed between the infrared emitters (7).
  3. The contact-free diverting device for sheet material according to claim 1 or 2, characterized in that there is provided around the cylindrical surface (4) a rounded protection screen (9) of material transparent to infrared radiation such as quartz glass preferably fixed but removable and provided with apertures or gaps (5) for the passage of the air flow emitted by the blowing means.
EP94929584A 1993-10-06 1994-10-05 Contact-free sheet material diverting device Expired - Lifetime EP0719401B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9312095 1993-10-06
FR9312095A FR2710971B1 (en) 1993-10-06 1993-10-06 Non-contact deflection device for sheet material.
PCT/FR1994/001165 WO1995010012A1 (en) 1993-10-06 1994-10-05 Contact-free sheet material diverting device

Publications (2)

Publication Number Publication Date
EP0719401A1 EP0719401A1 (en) 1996-07-03
EP0719401B1 true EP0719401B1 (en) 1997-12-17

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ID=9451723

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Application Number Title Priority Date Filing Date
EP94929584A Expired - Lifetime EP0719401B1 (en) 1993-10-06 1994-10-05 Contact-free sheet material diverting device

Country Status (10)

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US (1) US5636450A (en)
EP (1) EP0719401B1 (en)
CN (1) CN1132550A (en)
AT (1) ATE161322T1 (en)
AU (1) AU7858694A (en)
CA (1) CA2173620A1 (en)
DE (1) DE69407423T2 (en)
FI (1) FI961495A (en)
FR (1) FR2710971B1 (en)
WO (1) WO1995010012A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI98944C (en) * 1995-10-25 1997-09-10 Valmet Corp Method and apparatus for drying the coating of a paper web or equivalent
FI114933B (en) * 1997-07-07 2005-01-31 Metso Paper Inc Method and apparatus for drying a coated paper web or the like
US6116595A (en) * 1998-04-13 2000-09-12 Quad/Graphics, Inc. Sheet diverter wedge including air discharge ports
US6058621A (en) * 1998-06-05 2000-05-09 Eastman Kodak Company Apparatus and method for drying photosensitive material using radiant heat and air flow passages
GB0204173D0 (en) * 2002-02-22 2002-04-10 Compact Engineering Ltd Infra red dryer
ATE388826T1 (en) * 2005-12-22 2008-03-15 Tapematic Spa A DEVICE FOR DRYING BY RADIATION
US9873501B2 (en) 2010-02-05 2018-01-23 Learjet Inc. System and method for fabricating a composite material assembly

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2389586A (en) * 1944-11-17 1945-11-27 Bernard R Andrews Drying apparatus
GB1079677A (en) * 1965-06-14 1967-08-16 Ilford Ltd Drying moisture-containing layers
US3722105A (en) * 1971-07-06 1973-03-27 Owens Illinois Inc Apparatus and method for applying radio frequency energy to a moving web of material
DE2351280B2 (en) * 1973-10-12 1979-01-25 Babcock-Bsh Ag Vormals Buettner- Schilde-Haas Ag, 4150 Krefeld Impact jet dryer for web-shaped goods
DE2961177D1 (en) * 1978-01-27 1982-01-14 Spooner Edmeston Eng Float treatment apparatus
GB2126974B (en) * 1982-09-07 1985-09-11 Grace W R & Co Device for supporting a web on a bed of air
SE8205095D0 (en) * 1982-09-08 1982-09-08 Infraroedteknik Ab SETTING TO HEAT PROCESS A CONTINUOUS MATERIAL COAT, IN PARTICULAR DRYING OF A PAPER COAT, AND DEVICE FOR IMPLEMENTATION OF THE SET
FI75008C (en) * 1986-03-14 1992-02-17 Valmet Oy Float dryer and method for streamlining its function
FI80099C (en) * 1986-10-31 1990-04-10 Imatran Voima Oy FOERFARANDE OCH ANORDNING FOER TORKNING AV ROERLIGT BANMATERIAL.
EP0305366A1 (en) * 1987-03-11 1989-03-08 Valmet Paper Machinery Inc. Arrangement for drying a running web
FI78525C (en) * 1987-11-02 1989-08-10 Valmet Paper Machinery Inc infra-drying
FI79156C (en) * 1988-03-08 1989-11-10 Valmet Paper Machinery Inc Procedure in an integrated IR dryer / yankee cover and IR dryer / yankee cover.
US5092059A (en) * 1988-06-07 1992-03-03 W. R. Grace & Co.-Conn. Infrared air float bar
EP0346081B1 (en) * 1988-06-07 1992-12-23 W.R. Grace & Co.-Conn. Air float bar
US5199623A (en) * 1989-01-06 1993-04-06 Valmet Paper Machinery Inc. Device for supporting, turning and spreading of a web
DE4110875A1 (en) * 1991-04-04 1992-10-08 Voith Gmbh J M DRY LOT

Also Published As

Publication number Publication date
AU7858694A (en) 1995-05-01
FR2710971B1 (en) 1995-12-29
CN1132550A (en) 1996-10-02
FI961495A (en) 1996-05-03
FI961495A0 (en) 1996-04-03
ATE161322T1 (en) 1998-01-15
US5636450A (en) 1997-06-10
FR2710971A1 (en) 1995-04-14
EP0719401A1 (en) 1996-07-03
DE69407423T2 (en) 1998-07-16
WO1995010012A1 (en) 1995-04-13
DE69407423D1 (en) 1998-01-29
CA2173620A1 (en) 1995-04-13

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