EP0748289B1 - Boitier de soufflage pour le guidage par flottement de feuilles ou de bandes - Google Patents

Boitier de soufflage pour le guidage par flottement de feuilles ou de bandes Download PDF

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Publication number
EP0748289B1
EP0748289B1 EP95910424A EP95910424A EP0748289B1 EP 0748289 B1 EP0748289 B1 EP 0748289B1 EP 95910424 A EP95910424 A EP 95910424A EP 95910424 A EP95910424 A EP 95910424A EP 0748289 B1 EP0748289 B1 EP 0748289B1
Authority
EP
European Patent Office
Prior art keywords
nozzles
blowing
width
guide surface
sheets
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
EP95910424A
Other languages
German (de)
English (en)
Other versions
EP0748289A1 (fr
Inventor
Jürgen Alfred Stiel
Volkmar Rolf Schwitzky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0748289A1 publication Critical patent/EP0748289A1/fr
Application granted granted Critical
Publication of EP0748289B1 publication Critical patent/EP0748289B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/112—Means using fluid made only for exhausting gaseous medium producing fluidised bed for handling material along preferably rectilinear path, e.g. nozzle bed for web

Definitions

  • the invention relates to a blow box for floating Guiding sheets or webs in processing machines, especially rotary printing machines, according to the Preamble of claim 1.
  • DE-PS 19 07 083 describes a blow box with several distributed blow openings, the one each lowered into the blow box have an inclined guide surface. However point there the nozzles a tongue, and the radial edges of the Guide surface close an angle between 120 ° and 180 ° on. This will make a wide beam, none directed beam, with a flat effect. Also all blowing nozzles are arranged in the same direction. As a result, it can only be a hardly tightening in one direction Power is generated, but it is especially with thin sheets this disadvantageous, because this makes them easy to flutter tend.
  • DE-PS 28 02 610 shows nozzles, the side surfaces of the sloping baffles run parallel and with tongue are provided. These nozzles are narrow arranged side by side on blow boxes. It will be one Guide route described, which consists of several blow boxes consists of those to be led above and below Arch are arranged. There is no closed one Leadership area. Due to gaps between Air flows out of the individual blow boxes, so that no even air cushion and arches wavy along the guide route. A disadvantage of the nozzles described is that emerging air jets do not diverge and so one large number of nozzles to build a homogeneous Air cushion is necessary.
  • the invention has for its object a Blow box for floating guiding of sheets or sheets with an otherwise closed nozzle To create a guide surface with which an even load-bearing, i.e. without gaps or counteracting Blow jets, air cushions between the blow box and the bow or webs is caused and the nozzles one generate directed, laterally limited blow jet.
  • a blow box according to the invention ensures that a particularly uniform air cushion is formed over an entire guide surface.
  • this air cushion By means of this air cushion, an arch or a web is carried and sucked in simultaneously by the effect of the aerodynamic paradox.
  • slightly divergent jets of the nozzle exert forces to tighten in defined directions. These forces are advantageously directed towards free edges of the sheet.
  • a division of the guide surface into 3 zones across the width proved to be particularly suitable: due to the stabilization zone symmetrically located on an axis of symmetry, a uniform air cushion is achieved in this area, which at the same time has a tightening effect against the conveying direction F exerted on the bow and counteracted by the injector effect generated in the tightening zones (ie air is discharged from the stabilization zone). Tightening zones adjoin both sides of the stabilization zone, in which the nozzles with a conveying direction F form an angle of 120 ° to 160 ° or - 120 ° to - 150 °, pointing away from the axis of symmetry.
  • the nozzles are directed in such a way that each blowing jet is interrupted by a second air jet which blows approximately at right angles to the first, so that no wave formation is caused by a continuous jet, ie the blowing jet of each nozzle only spreads straight over a short distance.
  • blow box according to the invention is in the drawing shown and is described in more detail below.
  • Nozzle 1 is explained in more detail with reference to FIGS. 1 to 3:
  • the nozzle 1 is in a closed guide surface 2 of the blow box 5, which is along a conveyor line of an arch 3 extends.
  • So z. B. a straight line using a deep-drawing tool Section of width B and at the same time a guide surface 4, the angle alpha 2 ° to 6 ° into the blow box 5 is lowered.
  • the flow of a gaseous medium starts e.g. B. air along the guide surface 4.
  • the divergent edges 7, 8 form closed side surfaces between the guide surface 2 and the lowered against the guide surface 2 Guide surface 4. This results in a nozzle 1 Flat jet nozzle with directed, slightly divergent Beam.
  • This nozzle 1 is at a pressure of 100 up to 500 PA applied.
  • As a gaseous medium in the present example air or with solvent or Water enriched air is used.
  • FIG. 4 shows, as a first exemplary embodiment, an arrangement of a plurality of the nozzles 1 described above over the width and length of the guide surface 2 of a sheet guiding device.
  • the nozzles 1 are arranged symmetrically with a pitch t with respect to an axis of symmetry 14 running in the conveying direction F.
  • Two successive nozzle rows 11, 12 extending across the width of the guide surface 2 are offset by half a pitch t with respect to an axis of symmetry 13 which runs along the conveying direction F.
  • the division t is a function of the opening angle Beta, which determines a width BL of the air jet at the distance of the division t from the blowing opening.
  • the ratio of the division t to a width BL of the air jet at the distance of the division t from the blowing opening is preferably t / BL approx. 1-2.
  • the total area of the blowing openings 6 is 0.1% to 1% of the area of the guide surface 2.
  • the guide surface 2 is divided into three zones 14, 16, 17 by the arrangement of the nozzles 1 across the width.
  • a stabilization zone 14 lies symmetrically on both sides of the axis of symmetry 14, followed by a tightening zone 16, 17.
  • the nozzles 1 are oriented counter to the conveying direction F, while in the two tightening zones 16, 17 the nozzles 1 with the conveying direction F enclose an angle gamma of 120 ° -150 ° pointing away from the axis of symmetry 13, in the present example 135 ° .
  • the blowing direction here points approximately to trailing edges 18, 19 of a sheet 3. Resulting R1, R2, R3 of the blowing direction of the nozzles 1 thus point in the stabilization zone 14 against the conveying direction F and in the two tightening zones 16, 17 approximately to the trailing edges 18, 19 of the sheet 3.
  • stabilization zone 14 and tightening zones 16, 17 are also present, the rows of nozzles 11, 12 in the two tightening zones 16, 17 not being offset by half a division t.
  • the stabilization zone 14 is here formed by a row of nozzles 21 running on the axis of symmetry 13, on the sides of which rows of nozzles 22, 23 which blow in and away but are blowing against the direction of conveyance F are alternately blown at an angle of 45 °.
  • the nozzles 1 with the conveying direction F enclose an angle gamma alternating from 100 ° to 120 ° or 160 ° to 170 ° from the axis of symmetry 13.
  • each nozzle 1 is assigned a subsequent nozzle 1, which blows into the rear space of the leading nozzle 1. 5 no continuous straight flow can occur in the tightening zones 16, 17, since each nozzle 1 is assigned a second nozzle 1, which blows approximately perpendicular to the first and which laterally deflects the blowing jet of the first nozzle 1.
  • the width of the stabilization zone 11 is advantageously smaller than the smallest format of the sheets 3 to be guided, while the width of the closed guide surface 2 should be larger than the largest format of the sheets to be guided.
  • the maximum is Format width of the sheet 3 approx. 1000 mm
  • the width of the guide surface 2 is approximately 1100 mm.
  • the length of the guide surface 2 extends along the sheet conveying path, for example, between two Printing units or a printing unit and a display of a Rotary printing press.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Advancing Webs (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (5)

  1. Boítier de soufflage pour le guidage par flottement de feuilles (3) ou de bandes dans des machines de traitement, en particulier des presses rotatives, avec une surface de guidage (2) dotée de buses (1) sinon close, orientée vers les feuilles (3) ou les bandes, dans lequel les buses (1) présentent des orifices de soufflage (6) et des surfaces directrices (4) qui les jouxtent, inclinées et abaissées vers un côté intérieur du boítier de soufflage, limitées par un passage (9) en arc de cercle, caractérisé en ce que les orifices de soufflage (6) présentent respectivement une aire de la section de sortie d'air (A) plane d'une largeur (b) et d'une hauteur (h), en ce que la surface directrice (4) est dotée de bords radiaux (7, 8) formant un angle d'ouverture (bêta) entre 20 ° et 50 °, en ce qu'une disposition des buses (1) est définie dans et transversalement à une direction d'acheminement (F) par une partition (t), en ce qu'un rapport entre cette partition (t) et une largeur (BL) d'un jet d'un milieu gazeux dans l'écartement (t) avec l'orifice de soufflage (6) est compris entre 1 et 2, c'est-à-dire t/BL = 1 à 2.
  2. Dispositif selon la revendication 1, caractérisé en ce que la largeur (b) et la hauteur (h) de l'orifice de soufflage (6) présentent un rapport b/h = 5 à 10.
  3. Dispositif selon les revendications 1 et 2, caractérisé en ce qu'une largeur (b) de l'orifice de soufflage (6) est comprise entre 5 mm et 20 mm.
  4. Dispositif selon la revendication 1, caractérisé en ce que les buses (1) sont soumises à une pression d'un milieu gazeux comprise entre 100 Pa et 500 Pa.
  5. Dispositif selon la revendication 1, caractérisé en ce que la surface totale des orifices de soufflage (6) représente entre 0,1 % et 1 % de la superficie de la surface de guidage (2).
EP95910424A 1994-03-03 1995-03-01 Boitier de soufflage pour le guidage par flottement de feuilles ou de bandes Expired - Lifetime EP0748289B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4406848 1994-03-03
DE4406848A DE4406848C2 (de) 1994-03-03 1994-03-03 Blaskasten zum schwebenden Führen von Bogen oder Bahnen
PCT/DE1995/000259 WO1995023754A1 (fr) 1994-03-03 1995-03-01 Boitier de soufflage pour le guidage par flottement de feuilles ou de bandes

Publications (2)

Publication Number Publication Date
EP0748289A1 EP0748289A1 (fr) 1996-12-18
EP0748289B1 true EP0748289B1 (fr) 1998-06-03

Family

ID=6511635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95910424A Expired - Lifetime EP0748289B1 (fr) 1994-03-03 1995-03-01 Boitier de soufflage pour le guidage par flottement de feuilles ou de bandes

Country Status (5)

Country Link
US (1) US5868386A (fr)
EP (1) EP0748289B1 (fr)
JP (1) JP2667582B2 (fr)
DE (2) DE4406848C2 (fr)
WO (1) WO1995023754A1 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4447963B4 (de) * 1994-08-03 2005-12-29 Heidelberger Druckmaschinen Ag Einrichtung zum berührungsfreien Führen bogenförmigen Materials
US6378425B1 (en) * 1995-02-01 2002-04-30 Heidelberger Druckmaschinen Ag Sheet-guiding device for printing presses
DE19635629B4 (de) * 1996-09-03 2006-08-17 Heidelberger Druckmaschinen Ag Vorrichtung zur berührungslosen Bogenführung in einer Bogendruckmaschine
EP0847856A3 (fr) * 1996-12-10 1998-12-30 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour saupoudrer des feuilles
DE19747040A1 (de) * 1997-08-28 1999-03-04 Heidelberger Druckmasch Ag Luftpolsterführung
DE19814006C1 (de) * 1998-03-28 1999-06-02 Koenig & Bauer Ag Verfahren und Einrichtung zur Bogenführung an einer Leitrakel in Druckmaschinen
GB9823383D0 (en) * 1998-10-27 1998-12-23 Spooner Ind Ltd Improvements in or relating to web processing
US6325896B1 (en) 1999-09-23 2001-12-04 Valmet-Karlstad Ab Apparatus for transferring a fast running fibrous web from a first location to a second location
DE10057570B4 (de) * 1999-12-15 2005-11-24 Heidelberger Druckmaschinen Ag Leitvorrichtung einer flächige Bedruckstoffe verarbeitenden Maschine
DE10064588B4 (de) * 2000-12-22 2006-04-13 Man Roland Druckmaschinen Ag Vorrichtung zum schwebenden Führen von Bahn- oder Bogenmaterial in einer Verarbeitungsmaschine
DE10064589C2 (de) * 2000-12-22 2002-11-07 Roland Man Druckmasch Vorrichtung zum schwebenden Führen von Bahn- oder Bogenmaterial in einer Verarbeitungsmaschine
US20030131943A1 (en) * 2002-01-17 2003-07-17 Frederisy Douglas R. Apparatus and method for assembling absorbent garments
DE10306509B4 (de) * 2003-02-14 2007-08-23 Otto Junker Gmbh Düsenfeld zur schwebenden Führung von Warenbahnen
DE10343846B3 (de) * 2003-09-23 2005-03-17 Continental Aktiengesellschaft Verfahren zur Positionierung eines streifenförmigen Reifenaufbauteiles auf einer Reifenaufbaumaschine
DE102004062571A1 (de) 2004-12-24 2006-07-06 Koenig & Bauer Ag Vorrichtung zur Luftpolsterführung
JP2006240204A (ja) * 2005-03-07 2006-09-14 Mitsubishi Heavy Ind Ltd 枚葉印刷機の乾燥装置
DE102005015839A1 (de) * 2005-04-07 2006-10-12 Man Roland Druckmaschinen Ag Bogenführungsvorrichtung einer Druckmaschine
US7311234B2 (en) * 2005-06-06 2007-12-25 The Procter & Gamble Company Vectored air web handling apparatus
US20080059339A1 (en) * 2006-08-31 2008-03-06 Gualandri J Joseph Systems and methods for identifying attachments
EP1970334A3 (fr) 2007-03-15 2009-12-30 Heidelberger Druckmaschinen Aktiengesellschaft Machine de traitement de feuilles dotée d'un dispositif de transport pneumatique
DK2569236T3 (en) * 2010-05-11 2016-12-19 Jesco Holding Aps A tubular roller
DE102017200260B4 (de) * 2017-01-10 2021-05-12 Koenig & Bauer Ag Fördervorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907083C3 (de) * 1969-02-13 1975-12-18 Vits-Maschinenbau Gmbh, 4018 Langenfeld Blaskasten zum schwebenden Führen und/oder Fördern von Bahnen oder Bogen
US3957187A (en) * 1975-02-11 1976-05-18 James Puigrodon Methods and apparatus for transporting and conditioning webs
DE2802610C2 (de) * 1978-01-21 1983-05-05 Vits-Maschinenbau Gmbh, 4018 Langenfeld Blaskasten zum schwebenden Führen und/oder Fördern von Bahnen oder Bogen
DE3036794C2 (de) * 1980-09-30 1983-05-05 Achenbach Buschhütten GmbH, 5910 Kreuztal Fördervorrichtung für Band- und Folienmaterial für Bandbearbeitungsmaschinen
US4632321A (en) * 1984-02-06 1986-12-30 Oerlikon Motch Corporation Div. Jetstream Systems Co. Air conveyor for plastic film
DE8915626U1 (de) * 1989-11-06 1991-02-21 Vits, Hilmar, 5653 Leichlingen Vorrichtung zum schwebenden Führen von zu fördernden Materialbahnen oder Materialbogen
DE3936846C1 (fr) * 1989-11-06 1991-04-18 Hilmar 5653 Leichlingen De Vits
DE4113465A1 (de) * 1991-04-25 1992-10-29 Heidelberger Druckmasch Ag Vorrichtung zum schwebenden fuehren und/oder foerdern von bahnen oder bogen

Also Published As

Publication number Publication date
WO1995023754A1 (fr) 1995-09-08
DE59502413D1 (de) 1998-07-09
US5868386A (en) 1999-02-09
JPH09503987A (ja) 1997-04-22
EP0748289A1 (fr) 1996-12-18
JP2667582B2 (ja) 1997-10-27
DE4406848C2 (de) 1997-11-06
DE4406848A1 (de) 1995-09-07

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