EP0748283A1 - Vorrichtung zum führen von frisch beschichteten bogen - Google Patents
Vorrichtung zum führen von frisch beschichteten bogenInfo
- Publication number
- EP0748283A1 EP0748283A1 EP95910425A EP95910425A EP0748283A1 EP 0748283 A1 EP0748283 A1 EP 0748283A1 EP 95910425 A EP95910425 A EP 95910425A EP 95910425 A EP95910425 A EP 95910425A EP 0748283 A1 EP0748283 A1 EP 0748283A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- air supply
- supply box
- guide surface
- fan
- 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
- 238000001035 drying Methods 0.000 claims description 11
- 238000007664 blowing Methods 0.000 abstract description 6
- 238000010981 drying operation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0423—Drying webs by convection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
Definitions
- the invention relates to a device for guiding sheets over a continuous guide surface in a processing machine according to the preamble of claim 1.
- blow box for floating guiding of sheets in which blow openings are provided with a lowered guide surface.
- the sheet is guided on an air cushion by air jets emerging from these blowing openings.
- This device can not be acted upon by suction air and that no directed jet can be generated with these nozzles.
- DE-PS 34 11 029 describes a continuous guide surface with air nozzles which are designed as bores.
- the air nozzles can be operated either as blowing or suction nozzles.
- the disadvantage of these nozzles is that there is no suction effect in the blowing mode and no directed force can be generated to tighten the sheet.
- Neither version has a device that attaches an arc to a sheet by means of a second air cushion Clamped top and with which the sheet can be dried.
- DE-PS 34 43 704 shows a conveyor device for sheets with two guide surfaces arranged one above the other. These guide surfaces are provided with bores which are used as air nozzles. The bow is clamped between two air cushions. The disadvantage here is that the sheet hovers in an undefined position between these air cushions and thus tends to flutter slightly.
- DE-PS 14 49 656 describes a device for flutter-free guiding of flat material.
- blow boxes provided with slot nozzles are provided for guiding flat material, and blow boxes with vertically emerging blowing jets are arranged opposite them for drying.
- the disadvantage here is that there is no continuous guide surface and thus the flat material tends to form waves.
- the energy expenditure for guiding the sheets is high.
- the invention has for its object a device for guiding freshly coated sheets along a guide surface in a processing machine, preferably
- Rotary printing machine with either two operating modes to be created, wherein in a first operating mode "air and drying mode” an air supply box of the guide surface and an air supply box for impact jet nozzles can be pressurized with compressed air and in a second operating mode "suction air and drying mode" the energy requirement, and so that the operating costs of the device according to the invention can be considerably reduced compared to the prior art without significantly influencing the drying.
- air and drying mode an air supply box of the guide surface and an air supply box for impact jet nozzles can be pressurized with compressed air and in a second operating mode "suction air and drying mode" the energy requirement
- the advantages that can be achieved with the invention are, in particular, that in addition to a first operating mode - the air and drying mode - a second mode of operation - the suction air and drying mode - of the device according to the invention is possible, in which the energy requirement of the device according to the invention compared to the first Operating mode and the state of the art is significantly reduced.
- the air-operated mode is suitable for hovering sheets, the side of which faces the guide surface is printed or a sensitive one Surface (e.g. aluminum-clad).
- the side of the sheet facing the guide surface is of secondary importance (e.g. unprinted)
- hover guide and blow box with impact jet nozzles can be used to create a defined sheet guide level. H. the arc can be guided at a short distance from the guide surface. Impingement jet nozzles are used in an advantageous manner, since they also show good drying effect at a greater distance. This makes it possible to arrange the blow box with the impact jet nozzles and the guide surface at a large distance so that the sheets can be moved in an advantageous manner by means of chain conveyors.
- the device according to the invention is shown in the drawing and is described in more detail below.
- Fig. 1 is a schematic view of the invention Device along the conveying direction
- FIG. 3 shows a section of the detail shown in FIG. 2,
- FIG. 4 shows a schematic section of the device according to the invention transversely to the conveying direction in the air and drying mode
- Fig. 5 shows the section shown in Fig. 2 in suction and drying operation.
- a processing machine e.g. B. rotary printing press
- a processing machine e.g. B. rotary printing press
- This closed guide surface 2 is an upper part of an air supply box 3 and provided with a plurality of slot nozzles 4, which have a lei surface 6 which is lowered obliquely into the guide surface 2 (FIGS. 2 and 3). If this air supply box 3 is supplied with blown air, these slot nozzles 4 each generate an air jet 7 which diverges in width and runs along the guide surface 2, ie sweeps along the guide surface 2. Through these air jets 7 an air cushion 8 is generated on the guide surface 2, which carries and sucks the sheets 1 by means of simultaneous blowing / suction (hydrodynamic paradox). Each facing a freshly printed page 9 of the sheet 1 and the guide surface 2 at a distance a, z. B.
- a further air supply box 11 is arranged, which is provided with impact jet nozzles 12, the air jet 10 approximately perpendicular to the freshly printed side 9 of the sheet 1 and dry them.
- the air required for these two air supply boxes 3, 11 is accelerated by a centrally arranged common fan 13.
- These two air supply boxes 3, 11 are, as can also be seen from FIG. 2, arranged in an approximately closed space 14, which only has openings for the arc passage on the front side. At a central point 16 of the closed space 14 - z. B. in the middle of its left side - air is removed through an opening 16 for an intake duct 17 of the fan 13.
- the air in the fan 13 is accelerated such that an excess pressure of the air of optionally 500 Pa to 2000 Pa arises after exiting the fan 13.
- a short blow-out duct 18 leads to the air supply box 11 of the baffle, steel nozzles 12, in order to keep the flow losses low, so that approximately 500 Pa to 2000 Pa are optionally available at the baffle jet nozzles 12.
- This blow-out duct 18 branches a supply duct 19 for the Air supply box 3 from the guide surface 2.
- This supply duct 19 is connected via a connecting duct 21 to the intake duct 17 of the fan 13.
- the air supply box 3 for the slot nozzles 4 and the air supply box 11 for the impact jet nozzles 12 thus have a common air supply 20 consisting of fan 13, intake duct 17, blow-out duct 18, supply duct 19 and connecting duct 21.
- An optionally adjustable throttle device 22 is located in the supply channel 19 between the connecting channel 21 and the blow-out channel 18.
- a further optionally adjustable throttle device 23, 24 is arranged between the opening 16 and the connecting channel 21 both in the connecting channel 21 and in the suction channel 17.
- a first operating mode - the air and drying mode - of the device according to the invention the slot nozzles 4 of the guide surface 2 are pressurized from below and the sheets 1 are thus carried on an air cushion 8.
- the supply duct 19 of the air supply box 3 is connected to the exhaust duct 18 of the fan 13 and the connecting duct 21 to the intake duct 17 is closed, which is done by opening the throttle device 22 and closing the throttle device 23.
- the open position of the throttle device 22 by means of not shown, e.g. B. remotely adjustable Postionierantriebe, with z. B. electric drive, the air pressure, z. B, 200 Pa, changed in the air supply box 3 of the slot nozzles 4.
- the throttle device 24 in the intake duct 17 is fully open.
- the throttle devices 22, 23, 24 are designed as adjustable flaps and are moved via pneumatic cylinders (not shown).
- the open position is specified via an adjustable stop. If the air pressure in the air supply box 3 is to be variable, known positioning devices or control devices such as servomotors and servo cylinders, which either move to a defined position or are controlled by a pressure sensor, can be used.
- a second operating mode - the suction air and drying operation - the slot nozzles 4 of the guide surface 2 with suction air, for. B. 50 Pa the supply duct 19 is connected to the intake duct 17 by opening the throttle device 23 and the connection to the exhaust duct 18 is closed by closing the throttle device 22, which is done via the positioning drives described.
- the delivery rate of the fan 13 is reduced by the amount of blown air from the slot nozzles 4 of the guide surface 2 in comparison to the air and drying operation, so that the power consumption of the fan 13 also decreases.
- the negative pressure in the air supply box 3 is set via the throttle device 23 of the connecting channel 21 and the air quantity in the air supply box 11 is controlled by means of the throttle device 24.
- a fan 13 is preferably used, the characteristic curve of which has an approximately constant pressure with a variable delivery quantity.
- the power consumption of the fan 13 is proportional to the flow rate.
- a fan is used for the safe operation of the device according to the invention
- a drum rotor radial fan for example, fulfills the properties.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4406844A DE4406844C2 (de) | 1994-03-03 | 1994-03-03 | Vorrichtung zum Führen von frisch beschichteten Bogen |
| DE4406844 | 1994-03-03 | ||
| PCT/DE1995/000260 WO1995023701A1 (de) | 1994-03-03 | 1995-03-01 | Vorrichtung zum führen von frisch beschichteten bogen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0748283A1 true EP0748283A1 (de) | 1996-12-18 |
| EP0748283B1 EP0748283B1 (de) | 1998-09-02 |
Family
ID=6511632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95910425A Expired - Lifetime EP0748283B1 (de) | 1994-03-03 | 1995-03-01 | Vorrichtung zum führen von frisch beschichteten bogen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5915304A (de) |
| EP (1) | EP0748283B1 (de) |
| JP (1) | JP2776990B2 (de) |
| DE (2) | DE4406844C2 (de) |
| WO (1) | WO1995023701A1 (de) |
Families Citing this family (18)
| 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 |
| DE19549589B4 (de) * | 1995-02-01 | 2005-11-17 | Heidelberger Druckmaschinen Ag | Bogenleiteinrichtung für Druckmaschinen |
| DE19607397A1 (de) * | 1996-02-28 | 1997-09-04 | Heidelberger Druckmasch Ag | Vorrichtung und Verfahren zur Führung von bogenförmigem Material in einer Druckmaschine, insbesondere in einer Bogenrotations-Offsetdruckmaschine |
| DE19733691C2 (de) * | 1996-12-10 | 2001-02-08 | Heidelberger Druckmasch Ag | Bogen verarbeitende Rotationsdruckmaschine |
| US6286655B1 (en) * | 1999-04-29 | 2001-09-11 | Advanced Sorting Technologies, Llc | Inclined conveyor |
| SE517939C2 (sv) * | 2000-05-10 | 2002-08-06 | Interflaekt I Tullinge Ab | Förfarande och anordning för att torka ett arkformigt alster |
| DE10133633A1 (de) * | 2000-08-31 | 2002-03-14 | Heidelberger Druckmasch Ag | Leit-und Tragelemente mit gedrosselter Blasluft |
| US20040245711A1 (en) * | 2003-06-06 | 2004-12-09 | Xerox Corporation | Printer sheet vacuum transport curled sheets acquisition |
| US7296995B2 (en) * | 2003-07-01 | 2007-11-20 | Strahm Textile Systems Ag | Circulating air oven |
| DE102004004396A1 (de) * | 2004-01-29 | 2005-08-11 | Heidelberger Druckmaschinen Ag | Vorrichtung zur Erzeugung gedrosselter Blas- oder Saugluft |
| DE202004005480U1 (de) * | 2004-04-02 | 2004-06-03 | Heidelberger Druckmaschinen Ag | Bogendruckmaschine |
| DE102005014257A1 (de) * | 2005-03-30 | 2006-10-05 | Koenig & Bauer Ag | Leiteinrichtung zum Fördern von flächigen Bedruckstoffen auf einem Luftpolster |
| US7726649B2 (en) * | 2005-06-07 | 2010-06-01 | Xerox Corporation | Air drag cooler for sheet transport apparatus |
| JP2010167737A (ja) * | 2009-01-26 | 2010-08-05 | Seiko Epson Corp | 記録装置、記録装置の乾燥部における排気弁の制御方法 |
| WO2011160816A1 (fr) * | 2010-06-23 | 2011-12-29 | Bobst Sa | Dispositif de maintien pour une station de travail d'une machine de faconnage. |
| US9670616B2 (en) | 2014-12-11 | 2017-06-06 | Georgia-Pacific Consumer Products Lp | Active web spreading and stabilization shower |
| JP2016168805A (ja) * | 2015-03-16 | 2016-09-23 | 富士フイルム株式会社 | 用紙乾燥装置及びインクジェットプリンタ |
| US10155390B2 (en) * | 2015-04-20 | 2018-12-18 | Hewlett-Packard Development Company, L.P. | Aerosol control in a printer |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2268988A (en) * | 1939-08-08 | 1942-01-06 | Interchem Corp | Method and apparatus for drying printing ink |
| US2797074A (en) * | 1955-04-28 | 1957-06-25 | John H Flynn | Operating controls for print-drying apparatus |
| DE1449656C3 (de) * | 1961-12-02 | 1972-06-29 | Svenska Flaektfabriken Ab | Vorrichtung zum flatterfreien Führen von Flachmaterial |
| DE1907083C3 (de) * | 1969-02-13 | 1975-12-18 | Vits-Maschinenbau Gmbh, 4018 Langenfeld | Blaskasten zum schwebenden Führen und/oder Fördern von Bahnen oder Bogen |
| SE393825B (sv) * | 1974-05-29 | 1977-05-23 | Svenska Flaektfabriken Ab | Anordning for att vid transport av ett ban- eller arkformigt av luft uppburet material, framfora materialet i ett fixerat stabilt svevlege genom en eller flera passager av en behandlingsanleggning, foretredesvis ... |
| US3975057A (en) * | 1975-02-06 | 1976-08-17 | The Motch & Merryweather Machinery Company | Stopping device for air conveyor |
| DE3411029A1 (de) * | 1984-03-24 | 1985-10-03 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Vorrichtung zum fuehren von ein- und beidseitig bedruckten bogen |
| DE3443704A1 (de) * | 1984-11-30 | 1986-06-05 | Roland Man Druckmasch | Vorrichtung zum fuehren von ein- oder beidseitig bedruckten bogen |
| SE8803651L (sv) * | 1988-10-13 | 1990-04-14 | Svecia Silkscreen Maskiner Ab | Torkanlaeggning med paablaasningsdysor |
| DE4447963B4 (de) * | 1994-08-03 | 2005-12-29 | Heidelberger Druckmaschinen Ag | Einrichtung zum berührungsfreien Führen bogenförmigen Materials |
| US5634636A (en) * | 1996-01-11 | 1997-06-03 | Xerox Corporation | Flexible object handling system using feedback controlled air jets |
| DE19607397A1 (de) * | 1996-02-28 | 1997-09-04 | Heidelberger Druckmasch Ag | Vorrichtung und Verfahren zur Führung von bogenförmigem Material in einer Druckmaschine, insbesondere in einer Bogenrotations-Offsetdruckmaschine |
-
1994
- 1994-03-03 DE DE4406844A patent/DE4406844C2/de not_active Expired - Fee Related
-
1995
- 1995-03-01 US US08/696,850 patent/US5915304A/en not_active Expired - Fee Related
- 1995-03-01 DE DE59503429T patent/DE59503429D1/de not_active Expired - Fee Related
- 1995-03-01 JP JP7522628A patent/JP2776990B2/ja not_active Expired - Fee Related
- 1995-03-01 EP EP95910425A patent/EP0748283B1/de not_active Expired - Lifetime
- 1995-03-01 WO PCT/DE1995/000260 patent/WO1995023701A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9523701A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995023701A1 (de) | 1995-09-08 |
| US5915304A (en) | 1999-06-29 |
| JP2776990B2 (ja) | 1998-07-16 |
| JPH09510408A (ja) | 1997-10-21 |
| DE59503429D1 (de) | 1998-10-08 |
| EP0748283B1 (de) | 1998-09-02 |
| DE4406844A1 (de) | 1995-09-07 |
| DE4406844C2 (de) | 1997-05-07 |
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