EP0748289A1 - Blaskasten zum schwebenden führen von bogen oder bahnen - Google Patents
Blaskasten zum schwebenden führen von bogen oder bahnenInfo
- Publication number
- EP0748289A1 EP0748289A1 EP95910424A EP95910424A EP0748289A1 EP 0748289 A1 EP0748289 A1 EP 0748289A1 EP 95910424 A EP95910424 A EP 95910424A EP 95910424 A EP95910424 A EP 95910424A EP 0748289 A1 EP0748289 A1 EP 0748289A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzles
- width
- guide surface
- sheets
- blowing
- 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.)
- Granted
Links
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 the floating guidance of sheets or webs in processing machines, in particular rotary printing machines, according to the preamble of claim 1.
- DE-PS 19 07 083 describes a blow box with several distributed blow openings, each of which has an inclined guide surface lowered into the blow box.
- the nozzles have a tongue there and the radial edges of the guide surface form an angle between 120 ° and 180 °. This creates a broad beam, not a directed beam, with a flat effect. All blowing nozzles are also arranged in the same direction. As a result, hardly any tightening force can be generated in one direction, but this is disadvantageous especially in the case of thin sheets, since they tend to flutter.
- DE-PS 28 02 610 shows nozzles, the side surfaces of the oblique guide surfaces are parallel and are provided with a lowered tongue. These nozzles are arranged close to each other on blow boxes.
- a guide section is described which consists of several blow boxes to be guided above and below Arch are arranged. There is no closed guide surface. Air flows through the resulting gaps between the individual blow boxes, so that there is no uniform air cushion and the sheets are guided in a wavy manner along the guide path.
- a disadvantage of the nozzles described is that the emerging air jets do not diverge and so a large number of nozzles are necessary to build up a homogeneous air cushion.
- a generic blow box is known with which sheets or sheets are guided without contact.
- the nozzle body of the blow box has a nozzle opening, which is followed by a guide surface. Blowing jets emerging from the nozzle opening are guided along this guide surface.
- the disadvantage here is that only blowing jets with an undefined opening angle greater than 100 ° arise.
- the invention has for its object to provide a blow box for floating guiding of sheets or sheets with a nozzle provided, otherwise closed guide surface with which a uniformly supporting, ie without gaps or counteracting blowing jets, causes air cushions between the blow box and sheets or sheets and its nozzles produce a directed, laterally limited blow jet.
- This object is achieved according to the invention by a device with the features of the characterizing part of patent claim 1.
- 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 point with a conveying direction F away from the axis of symmetry enclose an angle of 120 ° to 160 ° or - 120 ° to - 150 °.
- 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, d. H. the blowing jet of each nozzle only spreads straight over a short distance. By two predominant, essentially, perpendicular to each other blowing directions flutter, d. H. Wave formation that moves in the blowing direction is suppressed.
- blow box according to the invention is shown in the drawing and is described in more detail below.
- Fig. 1 shows a section through the invention Device in the area of a nozzle, in the longitudinal direction
- FIG. 1 shows a top view of the detail shown in FIG. 1,
- FIG. 3 shows a section through the device according to the invention in the region of a nozzle in the transverse direction
- Fig. 5 is a plan view corresponding to Fig. 4 of a second embodiment.
- a nozzle 1 used in the blow box 5 according to the invention is explained in more detail with reference to FIGS. 1 to 3:
- the nozzle 1 is introduced into a closed guide surface 2 of the blow box 5, which extends along a conveying path of an arc 3. So z. B. by means of a deep-drawing tool, a straight cut of the width B and at the same time a guide surface 4, which is lowered by angle alpha 2 ° to 6 ° into the blow box 5, produced.
- the blowing opening 6 the flow of a gaseous medium z. B. air along the guide surface 4.
- the diverging edges 7, 8 form closed side surfaces between the guide surface 2 and the guide surface 4, which is lowered against the guide surface 2. This results in the nozzle 1 as a flat jet nozzle with a directed, slightly divergent jet. A pressure of 100 to 500 Pa is applied to this nozzle 1. In the present example, air or air enriched with solvent or water is used as the gaseous medium.
- FIG. 4 shows a first exemplary embodiment of 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 rows of nozzles 11, which extend over the width of the guide surface 2, 12 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 pitch t to a width BL of the air jet at the distance of the pitch 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 results 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 ones Edges 18, 19 of the sheet 3.
- 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.
- the resultants R1 of the blowing directions of the stabilization zones 14 run parallel to the conveying direction F, while in the tightening zones 16, 17 the resultants R2, R3 enclose an angle of 135 ° with the conveying direction F pointing away from the axis of symmetry 14.
- each nozzle 1 is assigned a subsequent nozzle 1, which blows into the rear space of the leading nozzle 1. 5 can no continuous straight line in the tightening zones 16, 17 Flow occurs because 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 format width of the sheet 3 is approximately 1000 mm
- the minimum format width of the sheet 3 is approximately 500 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 delivery of a rotary printing machine.
- Delivery direction F includes
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)
Abstract
Description
Claims
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 (de) | 1994-03-03 | 1995-03-01 | Blaskasten zum schwebenden führen von bogen oder bahnen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0748289A1 true EP0748289A1 (de) | 1996-12-18 |
EP0748289B1 EP0748289B1 (de) | 1998-06-03 |
Family
ID=6511635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95910424A Expired - Lifetime EP0748289B1 (de) | 1994-03-03 | 1995-03-01 | Blaskasten zum schwebenden führen von bogen oder bahnen |
Country Status (5)
Country | Link |
---|---|
US (1) | US5868386A (de) |
EP (1) | EP0748289B1 (de) |
JP (1) | JP2667582B2 (de) |
DE (2) | DE4406848C2 (de) |
WO (1) | WO1995023754A1 (de) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4427448B4 (de) * | 1994-08-03 | 2008-07-31 | 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 (de) * | 1996-12-10 | 1998-12-30 | Heidelberger Druckmaschinen Aktiengesellschaft | Vorrichtung zur Bestäubung von Bogen |
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 |
DE10064589C2 (de) * | 2000-12-22 | 2002-11-07 | Roland Man Druckmasch | Vorrichtung zum schwebenden Führen von Bahn- oder Bogenmaterial in einer Verarbeitungsmaschine |
DE10064588B4 (de) * | 2000-12-22 | 2006-04-13 | Man Roland Druckmaschinen Ag | 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 (de) | 2007-03-15 | 2009-12-30 | Heidelberger Druckmaschinen Aktiengesellschaft | Bogen bearbeitende Maschine mit pneumatischer Transportvorrichtung |
WO2011141032A1 (en) * | 2010-05-11 | 2011-11-17 | Rennebod, Knud | Tubular cylinder |
DE102017200260B4 (de) * | 2017-01-10 | 2021-05-12 | Koenig & Bauer Ag | Fördervorrichtung |
Family Cites Families (8)
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 (de) * | 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 |
-
1994
- 1994-03-03 DE DE4406848A patent/DE4406848C2/de not_active Expired - Fee Related
-
1995
- 1995-03-01 JP JP7522627A patent/JP2667582B2/ja not_active Expired - Lifetime
- 1995-03-01 US US08/700,361 patent/US5868386A/en not_active Expired - Lifetime
- 1995-03-01 WO PCT/DE1995/000259 patent/WO1995023754A1/de active IP Right Grant
- 1995-03-01 EP EP95910424A patent/EP0748289B1/de not_active Expired - Lifetime
- 1995-03-01 DE DE59502413T patent/DE59502413D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9523754A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE4406848C2 (de) | 1997-11-06 |
JPH09503987A (ja) | 1997-04-22 |
DE59502413D1 (de) | 1998-07-09 |
DE4406848A1 (de) | 1995-09-07 |
JP2667582B2 (ja) | 1997-10-27 |
EP0748289B1 (de) | 1998-06-03 |
US5868386A (en) | 1999-02-09 |
WO1995023754A1 (de) | 1995-09-08 |
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