EP1914004A2 - Procédé de commande d'un pulvérisateur de poudre - Google Patents

Procédé de commande d'un pulvérisateur de poudre Download PDF

Info

Publication number: EP1914004A2
Authority: EP; European Patent Office
Prior art keywords: air; powder; flow nozzle; printing; operating parameters
Prior art date: 2006-10-20
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

Application number

EP07116707A

Other languages

German (de)

English (en)

Other versions

EP1914004A3 (fr

EP1914004B1 (fr

Inventor

Peter Theobald Blaser

Claudius Haas

Marius Dr. Stelter

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.)

Heidelberger Druckmaschinen AG

Original Assignee

Heidelberger Druckmaschinen 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.)

2006-10-20

Filing date

2007-09-19

Publication date

2008-04-23

2007-09-19 Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG

2008-04-23 Publication of EP1914004A2 publication Critical patent/EP1914004A2/fr

2010-05-05 Publication of EP1914004A3 publication Critical patent/EP1914004A3/fr

2011-07-20 Application granted granted Critical

2011-07-20 Publication of EP1914004B1 publication Critical patent/EP1914004B1/fr

Status Active legal-status Critical Current

2027-09-19 Anticipated expiration legal-status Critical

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Classifications

- 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
- B41F23/06—Powdering devices, e.g. for preventing set-off
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1481—Spray pistols or apparatus for discharging particulate material
- B05B7/1486—Spray pistols or apparatus for discharging particulate material for spraying particulate material in dry state
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/20—Perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
- B05B1/202—Perforated pipes or troughs, e.g. spray booms; Outlet elements therefor comprising inserted outlet elements
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material

Definitions

the present invention relates to a method for controlling a powder sprayer with a sheath flow nozzle arrangement in a printing press, according to the preamble of claim 1.
a powder sprayer is described with a sheath flow nozzle assembly.
nozzle heads are arranged in a row.
Each nozzle head has two nozzles, from each of which emerges a powder air jet.
Above the nozzle heads a blowpipe is arranged, emerge from the compressed air jets.
the delivery speed of these compressed air jets is about twice as high as that of the powder air jets.
the compressed air jets together form a powder-free supporting air sheath flow, which surrounds the powder air jets on all sides.
the supporting air sheath current shields the powder air jets against eddy currents caused by the movement of a gripper conveying the signature.
the print quality may be degraded when processing printed sheets of paper compared to the processing of printed sheets made of cardboard.
the impulse exerted by the supporting air sheath flow on the printing sheet is suitable for the cardboard sheets, it is too large for the paper sheets.
the impulse impairs the sheet travel of the paper sheets, which flutter as a result.
the powder-based dust collector faces a sheet-guiding device, with the freshly printed sheet-top facing the powder-pulverizer and the likewise freshly printed sheet-underside of said sheet-guiding device.
the paper sheets may strike the sheet guiding device, smearing the printed image on the underside of the sheet.
the print quality is significantly reduced.
a powder air stream is generated by means of a blower air generator whose performance is changed during operation.
the performance of the air blower is adapted, among other things to the conveying speed of the sheet or the machine speed.
the pressure of the powder air stream can be set to a value between 0.1 bar and 0.5 bar.
the control device has a keypad via which basic parameters for the pending print job can be entered. These basic parameters include z. B. the format of the sheet and its conveying speed.
the invention has for its object to provide a method for controlling a powder sprayer with a sheath flow nozzle assembly, which ensures a consistently high print quality.
the method according to the invention for controlling a powder atomizer with a sheath flow nozzle arrangement in a printing press is characterized in that the sheath flow nozzle arrangement is controlled as a function of operating parameters of the printing press.
the operating parameters are different sheet weights, d. h., different specific surface masses of the printed sheets.
Sheet weights can differ from job to job, for example, when one works with lighter paper sheets and another with heavier cardboard sheets.
the air admission of the sheath flow nozzle arrangement can be adapted to the different sheet weights.
the operating parameters settings of the printing press on perfecting and on pure Perfecting mode are a perfector with a turning device for turning the sheet.
the turning device can optionally be set so that it uses the press sheets in fine and re-printing operation and transports the press sheets without the latter in pure straight printing mode.
the bypass flow nozzle arrangement can be controlled in such a way that its application of air in perfecting operation is different than in pure straight printing operation. As a result, an undisturbed by powder dusting, stable sheet travel can be ensured even in perfecting operation.
the delivery rate of supporting air-jacket flows of the bypass flow nozzle arrangement is changed depending on the operating parameters.
the operating parameters are the various sheet grammages, depending on the sheet grammages, the delivery rate of the support air sheath streams of the sheath jet nozzle assembly is varied, with conversion of the press from processing of lighter sheet grammage to processing a heavier sheet grammage, the delivery rate of the supporting air sheath streams is increased.
the operating parameters are the settings of the printing press on perfecting operation and on pure straight printing operation
the delivery speed of the supporting air-jacket flows of the bypass flow nozzle assembly is changed depending on said settings, wherein at a conversion of the printing press from the perfecting mode to the pure Perfecting mode, the delivery rate of the supporting air jacket currents is increased.
the rate of delivery of powder air core flows of the bypass flow nozzle arrangement is maintained unchanged when changing the delivery speed of the supporting air-jacket flows.
the supporting air jacket currents can be generated by means of a first blower air generator and the powder air core streams by means of a second blower air generator.
the sheath flow nozzle arrangement comprises a plurality of sheath flow nozzles, each comprising a core flow nozzle channel and a sheath flow nozzle channel surrounding the core flow nozzle channel.
the respective sheath flow nozzle ejects from the core flow nozzle channel the powder air core stream, which is a blown air jet enriched with powder for dusting the printed sheet.
From the sheath flow nozzle channel of the respective sheath flow nozzle of the supporting air sheath flow is ejected, which is not enriched with the powder blast air. Seen in the flow direction of the supporting air-jacket current, this has a substantially annular profile in the interior of which the powder-air core stream is located.
the sheath flow nozzle channels of the sheath flow nozzles are connected to the first blower air generator, which supplies the sheath flow nozzle ducts with the blowing air of the support air sheath flows having a comparatively high pressure.
the core flow nozzle channels are connected to the second blower air generator and are supplied by this with a comparatively low pressure having blown air of the powder air core streams, wherein the blown air discharged from the second blower air z. B. by means of an injector of the powder is added to form the powder air core streams.
the invention also includes a printing press, which is designed for carrying out the method according to the invention or one of its further developments.
This printing machine comprises a powder sprayer with a sheath flow nozzle arrangement and is characterized in that the sheath flow nozzle arrangement by a Control device is driven in response to operating parameters of the printing press.
the sheet delivery device comprises a chain conveyor 7, which deposits the printed sheets on a delivery stack 8. Furthermore, the printing machine 1 comprises a turning device 9, which can be switched from a pure Perfecting mode to a perfecting mode. In the pure straight printing mode without the use of a sheet, the printing sheets are printed both in the printing units 2 and 3 upstream of the turning device 9 and in the printing units 4 and 5 arranged downstream of the turning device 9 on the sheet front side. In the perfecting mode, the printed sheets are printed in the upstream printing units 2 and 3 on the sheet front side and in the downstream printing units 4 and 5 on the back of the sheet. In the sheet delivery arm 6, a powder sprayer 10 is arranged, which pollinates the printed sheet conveyed by the chain conveyor 7 with powder.
FIG. 2 shows that the powder sprayer comprises a nozzle bar 11 with jacket-flow nozzles 12 arranged thereon.
the nozzle beam 11 is connected to a first blower air generator 21 and a metering device 23 to a second blower 22.
the metering device 23 comprises an injector 24, which introduces the powder into the blown air generated by the second blower 22 to form a powder-air mixture. Belonging to the powder sprayer 10 blower 21, 22, which may be located outside of the printing press 1, are controlled by an electronic control device 25.
FIG. 3 shows that the bypass flow nozzles 12 are each formed in the form of a nozzle head 14, which is attached to the nozzle beam 11.
the respective sheath flow nozzle 12 comprises an outer sheath flow nozzle channel 15, which has a substantially annular cross section, and an inner core flow nozzle channel 16, which is enclosed by the sheath flow nozzle channel 15.
the bypass flow nozzle channel 15 is connected via a supporting air strand 17 to the first blower air generator 21 and the core flow nozzle duct 16 is connected via a powder air duct 18 to the second blower air generator 22.
the support air strand 17 and the powder air duct 18 consist of formed in the nozzle bar 11 air channels and connected to the nozzle bar 11 hose or pipes.
the sheath flow nozzle channel 15 ejects from its mouth a supporting air sheath stream 19 and the core flow nozzle channel 16 ejects from its mouth a powder air core stream 20 from.
the sheath flow nozzle arrangement consists of a series of core flow nozzle channels, which is arranged between a series of sheath flow nozzle channels arranged in the sheet transport direction and a row of sheath flow nozzle channels arranged downstream in the sheet transport direction.
the core-stream nozzle channels eject powder-air core streams trapped between the two support air-jacket streams forming air blast curtains ejected through the two rows of sheath-flow nozzle channels.
the momentum of the supporting air sheath flows is varied not only depending on the machine speed, the format of the printing sheets, the setting values of the boom and a powder extraction, but also depending on the grammage of the printed sheets and depending on whether the printing press 1 is in pure fine printing operation or operated in perfecting mode.
the powder air and the supporting air are supplied from separate sources and that the pulse increase does not take place for both air strands, but only for the supporting air strand 17.
the existing central air supply (first blower air generator 21) of the printing press 1 can be used.
the powder air pulse generated by the second blower 22 can be maintained at a constant minimum value.
the total air pulse, which is necessary to stabilize the powder-air jet, is generated primarily by the external support air and not by the internal powder air.
costs and installation space can be saved.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Printing Methods (AREA)
Spray Control Apparatus (AREA)
Ink Jet (AREA)
Accessory Devices And Overall Control Thereof (AREA)
Cleaning In Electrography (AREA)

EP07116707A 2006-10-20 2007-09-19 Procédé de commande d'un pulvérisateur de poudre Active EP1914004B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102006049648A DE102006049648A1 (de)	2006-10-20	2006-10-20	Verfahren zum Steuern eines Puderbestäubers

Publications (3)

Publication Number	Publication Date
EP1914004A2 true EP1914004A2 (fr)	2008-04-23
EP1914004A3 EP1914004A3 (fr)	2010-05-05
EP1914004B1 EP1914004B1 (fr)	2011-07-20

Family

ID=38887116

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP07116707A Active EP1914004B1 (fr)	2006-10-20	2007-09-19	Procédé de commande d'un pulvérisateur de poudre

Country Status (6)

Country	Link
US (1)	US7942096B2 (fr)
EP (1)	EP1914004B1 (fr)
JP (1)	JP5112814B2 (fr)
CN (1)	CN101164777B (fr)
AT (1)	ATE516884T1 (fr)
DE (1)	DE102006049648A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN102189753B (zh) *	2010-03-15	2015-03-18	海德堡印刷机械股份公司	用于对印刷页张撒布粉末的设备
CN101817254A (zh) *	2010-03-28	2010-09-01	滕兴鸿	电子气动喷粉装置
CN102398413B (zh) *	2010-09-08	2015-07-15	海德堡印刷机械股份公司	用于在印刷机中对印刷页张撒布粉末的设备
CN102452220B (zh) *	2010-10-21	2016-06-01	海德堡印刷机械股份公司	用于在印刷机中对页张撒布粉末的设备
DE102012000952A1 (de) *	2011-02-15	2012-08-16	Heidelberger Druckmaschinen Ag	Trockner mit integrierter Pudereinrichtung
CN103085468B (zh) *	2011-10-27	2017-04-19	海德堡印刷机械股份公司	用于给印刷页张撒布粉末的设备
DE102013010318A1 (de)	2012-07-13	2014-01-16	Heidelberger Druckmaschinen Ag	Pudervorrichtung für eine Druckmaschine
DE102014009427A1 (de)	2013-07-17	2015-01-22	Heidelberger Druckmaschinen Ag	Pudervorrichtung
DE102018220528A1 (de) *	2018-01-25	2019-07-25	Heidelberger Druckmaschinen Ag	Verfahren zum Betrieb einer Druckmaschine

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5658867A (en) *	1979-10-18	1981-05-22	Toho Seiki Kk	Apparatus for preventing powder from being scattered
US4332198A (en) *	1980-06-23	1982-06-01	Schmoeger Duane A	Printing press with an air assist sheet delivery and powdering system
DE3217779A1 (de) *	1982-05-12	1983-11-17	Weitmann & Konrad GmbH & Co KG, 7022 Leinfelden-Echterdingen	Vorrichtung zur steuerung des puderbestaeubers in einer druckmaschine
JPS61188824U (fr) *	1985-05-16	1986-11-25
DE4237111B4 (de) *	1992-11-04	2006-03-09	Platsch, Hans G., Dipl.-Ing.	Bestäubungseinrichtung
US5540152A (en) *	1995-04-10	1996-07-30	Demoore; Howard W.	Delivery conveyor with control window ventilation and extraction system
DE19648227A1 (de) *	1996-11-21	1998-05-28	Hans Georg Platsch	Verfahren und Vorrichtung zum Bestäuben von Produkten, insbesondere Druckprodukten
DE19751383B4 (de)	1997-11-20	2004-12-09	Weitmann & Konrad Gmbh & Co Kg	Verfahren und Vorrichtung zum Aufbringen von Puder auf bewegte Druckbogen
DE19836018A1 (de) *	1998-08-10	2000-02-17	Weitmann & Konrad Fa	Verfahren und Vorrichtung zum Bestäuben von bedruckten Bogen
DE19937090B4 (de) *	1998-08-10	2004-10-21	Weitmann & Konrad Gmbh & Co Kg	Verfahren und Vorrichtung zum Bestäuben von bedruckten Bogen
DE59906937D1 (de) *	1998-12-03	2003-10-16	Heidelberger Druckmasch Ag	Ausleger einer Bogen verarbeitenden Maschine
JP3600488B2 (ja) *	1999-09-16	2004-12-15	三菱重工業株式会社	印刷機の給紙部プリセット方法及びその装置
JP2001096724A (ja) *	1999-10-01	2001-04-10	Mitsubishi Heavy Ind Ltd	印刷機の印刷部プリセット方法及びその装置
DE10001590A1 (de)	2000-01-17	2001-08-02	Hans G Platsch	Vorrichtung zum Bestäuben eines mittels einer Fördereinrichtung vorbeibewegten Druckproduktes
DE10042888A1 (de) *	2000-08-31	2002-03-14	Heidelberger Druckmasch Ag	Bogenleiteinrichtung
US6598874B2 (en) *	2000-12-05	2003-07-29	Heidelberger Druckmaschinen Ag	Method and device for contact-free retention of sheets
DE10236264A1 (de) *	2002-08-07	2004-02-26	Platsch Gmbh & Co.Kg	Bepuderungseinheit, Bepuderungsstation und Verfahren zum Betreiben von solchen
DE10325386B4 (de)	2003-05-30	2012-03-15	Weitmann & Konrad Gmbh & Co. Kg	Vorrichtung zum Aufbringen von Puder auf bewegte Druckbogen
DE102004057478B4 (de)	2004-11-19	2009-07-09	Weitmann & Konrad Gmbh & Co. Kg	Sprühdose und Verfahren zum Bestäuben von druckfrischen Druckprodukten

2006
- 2006-10-20 DE DE102006049648A patent/DE102006049648A1/de not_active Withdrawn
2007
- 2007-09-19 AT AT07116707T patent/ATE516884T1/de active
- 2007-09-19 EP EP07116707A patent/EP1914004B1/fr active Active
- 2007-10-19 CN CN200710181845.5A patent/CN101164777B/zh active Active
- 2007-10-19 US US11/874,968 patent/US7942096B2/en active Active
- 2007-10-22 JP JP2007273636A patent/JP5112814B2/ja active Active

Also Published As

Publication number	Publication date
CN101164777B (zh)	2013-06-05
EP1914004A3 (fr)	2010-05-05
CN101164777A (zh)	2008-04-23
JP2008100519A (ja)	2008-05-01
DE102006049648A1 (de)	2008-04-24
US20080092762A1 (en)	2008-04-24
EP1914004B1 (fr)	2011-07-20
ATE516884T1 (de)	2011-08-15
JP5112814B2 (ja)	2013-01-09
US7942096B2 (en)	2011-05-17

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