EP0719401B1 - Vorrichtung zur berührungslosen umlenkung von bahnförmigem material - Google Patents

Vorrichtung zur berührungslosen umlenkung von bahnförmigem material 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
Authority
EP
European Patent Office
Prior art keywords
cylindrical surface
sheet material
emitters
contact
air cushion
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
EP94929584A
Other languages
English (en)
French (fr)
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EP0719401A1 (de
Inventor
Grégoire LIZE
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.)
Infra Rouge System
Original Assignee
Infra Rouge System
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Infra Rouge System filed Critical Infra Rouge System
Publication of EP0719401A1 publication Critical patent/EP0719401A1/de
Application granted granted Critical
Publication of EP0719401B1 publication Critical patent/EP0719401B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (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)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Laminated Bodies (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Claims (3)

  1. Vorrichtung zur berührungslosen Umlenkung von bahnförmigem, bandförmigem oder flächigem Material (1), die ein Luftkissen (6) benutzt, das um eine genau zylindrische Oberfläche (4) gebildet wird, die an einem Ort angeordnet ist, an dem das bahnförmige, beim Ablaufen behandelte Material (1) umgelenkt werden muß, wobei in der Vorrichtung in oder unter der zylindrischen Oberfläche (4) Luftblasmittel vorgesehen sind, die das Luftkissen (6) für die berührungslose Umlenkung bilden und die Vorrichtung noch Strahlenemitter (7) beinhaltet, die auf den bahnförmigen Materialabschnitt (1) wirken, der sich in der Umlenkung um die genannte zylindrische Oberfläche (4) befindet, dadurch gekennzeichnet, daß die Strahlungsemitter Infrarotemitter (7) sind, die einzig auf der Innenseite des in der Umlenkung befindlichen bahnförmigen Materiales (1) angeordnet sind, in oder unter der genannten zylindrischen Oberfläche (4), und deren Strahlung radial nach außen zu der genannten zylindrischen Oberfläche (4) gerichtet ist, in Richtung auf den bahnförmigen Materialabschnitt (11), der sich in der Umlenkung um die genannte zylindrische Oberfläche (4) befindet, wobei der Strom der geblasenen Luft die Kühlung der Infrarotemitter (7) gleichzeitig mit der Bildung des Luftkissens (6) gewährleistet.
  2. Vorrichtung zur berührungslosen Umlenkung von bahnförmigem Material nach Anspruch 1, dadurch gekennzeichnet, daß sie eine Vielzahl von Infrarotemittern (7) beinhaltet, die in Linien und/oder Reihen entsprechend dem Profil der genannten zylindrischen Oberfläche (4) angeordnet sind, wobei Durchlässe (5) für die geblasene Luft zwischen diesen Infrarotemittern (7) vorgesehen sind.
  3. Vorrichtung zur berührungslosen Umlenkung von bahnförmigem Material gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß um die zylindrische Oberfläche (4) noch ein gerundeter Schutzschirm (9) aus einem für die Infrarotstrahlung durchlässigen Material, wie Quarzglas, vorgesehen ist, der vorzugsweise abnehmbar und austauschbar angeordnet ist und mit Öffnungen oder Unterbrechungen (5) zum Durchtritt des von den Blasmitteln abgegebenen Luftstromes versehen ist.
EP94929584A 1993-10-06 1994-10-05 Vorrichtung zur berührungslosen umlenkung von bahnförmigem material Expired - Lifetime EP0719401B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9312095A FR2710971B1 (fr) 1993-10-06 1993-10-06 Dispositif de déviation sans contact pour matériau en feuille.
FR9312095 1993-10-06
PCT/FR1994/001165 WO1995010012A1 (fr) 1993-10-06 1994-10-05 Dispositif de deviation sans contact pour materiau en feuille

Publications (2)

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

Family

ID=9451723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94929584A Expired - Lifetime EP0719401B1 (de) 1993-10-06 1994-10-05 Vorrichtung zur berührungslosen umlenkung von bahnförmigem material

Country Status (10)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI98944C (fi) * 1995-10-25 1997-09-10 Valmet Corp Menetelmä ja laite paperiradan tai vastaavan päällysteen kuivatuksessa
FI114933B (fi) * 1997-07-07 2005-01-31 Metso Paper Inc Menetelmä ja laite päällystetyn paperiradan tai vastaavan kuivatuksessa
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 (de) * 2005-12-22 2008-03-15 Tapematic Spa Ein gerät zum trocknen durch strahlung
EP2531341B1 (de) 2010-02-05 2016-03-30 Learjet Inc. Vorrichtung und verfahren zur herstellung eines bauteiles aus komposit-material

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 (de) * 1973-10-12 1979-01-25 Babcock-Bsh Ag Vormals Buettner- Schilde-Haas Ag, 4150 Krefeld Prallstrahltrockner für bahnförmiges Gut
EP0003414B1 (de) * 1978-01-27 1981-11-04 Spooner Edmeston Engineering Limited Vorrichtung zu einer schwebenden Behandlung
GB2126974B (en) * 1982-09-07 1985-09-11 Grace W R & Co Device for supporting a web on a bed of air
SE8205095D0 (sv) * 1982-09-08 1982-09-08 Infraroedteknik Ab Sett att vermebehandla en kontinuerlig materialbana, i synnerhet torkning av en pappersbana, och anordning for genomforande av settet
FI75008C (fi) * 1986-03-14 1992-02-17 Valmet Oy Svaevtork och foerfarande foer effektivering av dess funktion.
FI80099C (fi) * 1986-10-31 1990-04-10 Imatran Voima Oy Foerfarande och anordning foer torkning av roerligt banmaterial.
EP0305366A1 (de) * 1987-03-11 1989-03-08 Valmet Paper Machinery Inc. Anordnung zum trocknen eines laufenden bandes
FI78525C (fi) * 1987-11-02 1989-08-10 Valmet Paper Machinery Inc Infratork.
FI79156C (fi) * 1988-03-08 1989-11-10 Valmet Paper Machinery Inc Foerfarande i en integrerad ir-tork/yankeekaopa och ir-tork/yankeekaopa.
US5092059A (en) * 1988-06-07 1992-03-03 W. R. Grace & Co.-Conn. Infrared air float bar
EP0346081B1 (de) * 1988-06-07 1992-12-23 W.R. Grace & Co.-Conn. Blaskasten für Luftkissen
US5199623A (en) * 1989-01-06 1993-04-06 Valmet Paper Machinery Inc. Device for supporting, turning and spreading of a web
DE4110875A1 (de) * 1991-04-04 1992-10-08 Voith Gmbh J M Trockenpartie

Also Published As

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

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