EP0945268A1 - Poudreur dans une machine à imprimer - Google Patents

Poudreur dans une machine à imprimer Download PDF

Info

Publication number
EP0945268A1
EP0945268A1 EP99105212A EP99105212A EP0945268A1 EP 0945268 A1 EP0945268 A1 EP 0945268A1 EP 99105212 A EP99105212 A EP 99105212A EP 99105212 A EP99105212 A EP 99105212A EP 0945268 A1 EP0945268 A1 EP 0945268A1
Authority
EP
European Patent Office
Prior art keywords
suction
pollination
dusting
sheet
dryer
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.)
Ceased
Application number
EP99105212A
Other languages
German (de)
English (en)
Inventor
Rudolf Mitze
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.)
Manroland AG
Original Assignee
MAN Roland 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.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0945268A1 publication Critical patent/EP0945268A1/fr
Ceased legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a dusting device in a printing press, preferably in a sheetfed press, with a pollination device after the preamble of the main claim.
  • a pollination device of this type for powder pollination of freshly printed Bow is known from DE 22 07 983 B2.
  • the facility is said to be dusting prevent powder beyond the limits of the effective range and a Enable powder recovery.
  • Above the sheet conveying level is a powder feed tube arranged, from which powder is dusted onto the sheet by means of compressed air becomes.
  • Blow curtain In the sheet conveying direction before and after the powder feed tube is as Blow curtain each arranged a blow pipe with an associated suction pipe through which excess powder can be sucked off.
  • Another dusting device is known according to DE 295 17 283 U1 as a powder device in the delivery of a printing press.
  • This powder device has a blower, preferably an axial fan, which generates an air flow directed perpendicularly to the sheet conveying plane.
  • a sheet guiding device is arranged in the delivery, which supports the sheet guidance.
  • a disadvantage of these designs is that the uncontrolled escape of pollination material into the printing press, for example in the sheet delivery, is not sufficiently prevented. This leads to machine soiling, which is exacerbated in particular by excessive dosing of pollination material.
  • the use of blow and suction pipes as an air curtain creates additional turbulence, which, in connection with the passing gripper systems, is further intensified during the pollination process.
  • the quality achievable in the pollination process deteriorates due to increasing turbulence.
  • the arch-shaped printing materials fixed in the gripper closure are insufficiently dusted in the area of the leading edge, which leads to the printing of the printing materials on the leading edge in the delivery stack.
  • the turbulence causes inside the printing press vagrant "powder particles, which on the one hand reduce the efficiency of the dusting device and at the same time increase machine pollution.
  • the object of the invention is a pollination device of the aforementioned To create type that avoids the disadvantages mentioned, in particular a achieved more uniform pollination of the printing materials and the proportion of stray Pollination material noticeably reduced within the printing press.
  • the advantage of the invention is that the contamination of the printing press through turbulent (vagabond) pollination material, such as in particular Powder is noticeably reduced.
  • distributing the volume flow preferably formed from dusting material and compressed air, is on the substrate surface achieved better efficiency.
  • the pollination facility preferably extends over the maximum format width of the arcuate Substrate.
  • the pollination device preferably consists of at least a series of nozzles for the discharge of the pollination material as well for compressed air. In a further training, each nozzle can be used for the discharge of Pollination material adjacent to another nozzle for the discharge of compressed air be assigned.
  • the dusting material or the printing material can be charged by electrostatic forces.
  • a pneumatically actuated guide device forming the sheet guide surface is arranged below the conveying plane of the sheet-shaped printing material.
  • the dusting device is therefore preferably continuously in operation in the respective printing operation.
  • the suction system which partially surrounds the dusting device, is preferably in constant operation, analogously to the activated dusting device. In this case, the suction system sucks off the stray particles of the pollinating material and preferably feeds the excess pollinating material in a circuit after the pollinating device has been regenerated, if necessary.
  • a suction system e.g. Drag flows of the gripper systems and turbulence caused by the Printing material itself and / or the associated sheet guiding devices generated, reduced.
  • a boom is arranged downstream of a multi-color offset printing machine.
  • a blowing device is arranged above it in a field.
  • the boom also has sheet guiding devices, formed from modularly arranged Guide devices 6, for the sheet guide.
  • a first dryer system 4 is arranged in the bow emergence of the boom Further dryer systems 4 follow in the horizontal direction of the boom.
  • the pollination device 3 extends at least about the maximum format width of the substrate to be processed and has at least one, depending on the width of the substrate, format-dependent activatable row of nozzles.
  • the nozzles are preferred as Bores and / or slots formed.
  • a further opening for example as a nozzle for the discharge of powder, can be assigned to each nozzle for the discharge of compressed air.
  • Pollination material and compressed air form a volume flow that strikes the top of the substrate.
  • the nozzles for the discharge of compressed air in combination with powder or as a powder / compressed air mixture are based on a conveying plane 19 for the printing material, preferably inclined at an acute angle in the conveying direction 5, and form in the operating mode Pollinate "a volume flow in an inclined flow direction onto the printing material.
  • the dusting device 3 is coupled with a device for the supply of dusting material (powder) and with a compressed air supply.
  • the inclined volume flow means that the area of the printing material leading edge directly behind the passing gripper system 2 is dusted more specifically .
  • the dryer systems 4 are below the guide devices 6 dryer suction 14 assigned adjacent.
  • the dryer suction systems 14 are at least arranged laterally in the region of the side frames 12. Preferably extend the dryer suction 14 over the full width between the side frames 12.
  • a pollination bulkhead 18, e.g. arranged as a bulkhead.
  • the dryer suction 14 is via a collecting device 15 with a Boom arranged central suction 7 in functional connection, which means Line system 8 in the suction direction 10 with a downstream separator 9 is coupled.
  • the pollination partition 18 encloses the pollination device 3 in a hood-like manner and extends between the side frames 12 (transverse to the conveying direction 5).
  • the dust barrier 18 is in the area of Side frames 12 each have a suction system 13 laterally assigned.
  • the suction systems 13 are coupled to the collecting device 15 by means of suction lines 16.
  • the suction system 13 is made up of at least one suction box 22 extending maximum format width is designed as a flow channel, which has openings 21 facing the printing material.
  • the Suction box 22 is arranged with the side in the region of the side frames 12 Suction systems 13 in functional connection.
  • the suction systems 13 are over Suction lines 16 coupled to the central suction 7.
  • the dryer bulkhead 17 and the pollination bulkhead 18 preferably point in the conveying direction 5 arranged openings 20, e.g. Holes, slots, on, through a possible back pressure (under the Trcokner partition 17 or the dust barrier 18) is degradable. This will lead the Printing material, especially the rear area of the sheet, improved.
  • the mode of operation is as follows:
  • the circulating conveyor system 1 transports by means of gripper systems 2 sheet-shaped substrates in the conveying direction 5 a boom stack 11 to. This goes through in the horizontal area of the boom Gripper system 2 with the printing material, the pollination device 3.
  • the pollination device 3 is activated and preferably dusted in the direction of conveyance 5 the printing material running past in the direction of flow in one point Angle, based on the delivery level 19.
  • the volume flow reaches through the Inclination of the nozzles of the pollinator 3 also by the otherwise Gripper system 2 concealed area of the front edge of the substrate.
  • the nozzles of the pollination device 3, which extend over the format, can be switched individually or in groups.
  • the pollination device 3 and the suction system 13, including the suction box 22, are preferably constantly activated. If the printing material is moved past the dusting device 13, the suction system 13 sucks off excess dusting material, particularly in the lateral area.
  • the suction system 13 in the first embodiment as well as the suction system 13 with the suction box 22 in the second embodiment suck vagabonding pollinating material in the boom and feed it via the suction line 16, the collecting device 15, the central suction 7 and the line system 8 to a separating device 9. There the dusting material is separated from the suction air and prepared for a new use. Possibly.
  • the pollination material is processed and can then be fed to the pollination device 3 again.
  • the suction system 13 for the dusting material is coupled on the line side to the dryer suction 14 and the central suction 7, so that the technical investment in the system is low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge By Other Means (AREA)
EP99105212A 1998-03-24 1999-03-13 Poudreur dans une machine à imprimer Ceased EP0945268A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29805248U 1998-03-24
DE29805248U DE29805248U1 (de) 1998-03-24 1998-03-24 Bestäubungseinrichtung in einer Druckmaschine

Publications (1)

Publication Number Publication Date
EP0945268A1 true EP0945268A1 (fr) 1999-09-29

Family

ID=8054625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105212A Ceased EP0945268A1 (fr) 1998-03-24 1999-03-13 Poudreur dans une machine à imprimer

Country Status (2)

Country Link
EP (1) EP0945268A1 (fr)
DE (1) DE29805248U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1319506A3 (fr) * 2001-12-13 2004-10-13 Koenig & Bauer Aktiengesellschaft Dispositif de sortie d'une machine rotative d'impression pour feuilles

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826083B4 (de) * 1998-06-12 2005-03-31 Koenig & Bauer Ag Puderabsaugung in Auslegern von Bogenrotationsdruckmaschinen
ATE316467T1 (de) * 1998-11-16 2006-02-15 Hans-Peter Koch Bogenoffsetdruckverfahren und bogenoffsetdruckmaschine
DE102004054386C5 (de) * 2003-12-01 2018-10-25 Heidelberger Druckmaschinen Ag Verfahren zum Schutz einer Kettenführung einer Druckmaschine vor dem Eindringen von Puder

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2116042A1 (de) * 1970-04-01 1971-10-21 Oxy Dry Int Ltd Verfahren und Vorrichtung zur Entfernung von Pulver aus der Atmosphäre
DE2207983A1 (de) * 1972-02-21 1972-08-30 Platsch Zerstaeubung Albin Vorrichtung zur puderbestaeubung
DE2519831A1 (de) * 1975-05-03 1976-11-11 Platsch Zerstaeubung Albin Vorrichtung zur puderbestaeubung
US5265536A (en) * 1993-01-11 1993-11-30 Millard James S System for collecting airborne powder, mists, and fumes
DE19617194A1 (de) * 1996-04-29 1997-10-30 Ltg Lufttechnische Gmbh Luftabsaugvorrichtung für Druckmaschinen
DE19733691A1 (de) * 1996-12-10 1998-06-18 Heidelberger Druckmasch Ag Bogen verarbeitende Rotationsdruckmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135220A1 (de) * 1981-09-05 1983-03-17 Weitmann & Konrad GmbH & Co KG, 7022 Leinfelden-Echterdingen Vorrichtung zum aufbringen von puderteilchen
DE4207118C2 (de) * 1992-03-06 2001-05-10 Hans G Platsch Bestäubungsgerät
DE9214459U1 (fr) * 1992-10-26 1993-02-04 Weitmann & Konrad Fa
DE19609438B4 (de) * 1996-03-11 2007-10-11 Platsch, Hans Georg Einrichtung zum Bestäuben von Druckprodukten
DE19625099A1 (de) * 1996-06-24 1998-01-02 Heidelberger Druckmasch Ag Verfahren zum Pudern einer bedruckten Oberfläche eines Bedruckstoffes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2116042A1 (de) * 1970-04-01 1971-10-21 Oxy Dry Int Ltd Verfahren und Vorrichtung zur Entfernung von Pulver aus der Atmosphäre
DE2207983A1 (de) * 1972-02-21 1972-08-30 Platsch Zerstaeubung Albin Vorrichtung zur puderbestaeubung
DE2519831A1 (de) * 1975-05-03 1976-11-11 Platsch Zerstaeubung Albin Vorrichtung zur puderbestaeubung
US5265536A (en) * 1993-01-11 1993-11-30 Millard James S System for collecting airborne powder, mists, and fumes
DE19617194A1 (de) * 1996-04-29 1997-10-30 Ltg Lufttechnische Gmbh Luftabsaugvorrichtung für Druckmaschinen
DE19733691A1 (de) * 1996-12-10 1998-06-18 Heidelberger Druckmasch Ag Bogen verarbeitende Rotationsdruckmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1319506A3 (fr) * 2001-12-13 2004-10-13 Koenig & Bauer Aktiengesellschaft Dispositif de sortie d'une machine rotative d'impression pour feuilles

Also Published As

Publication number Publication date
DE29805248U1 (de) 1998-05-20

Similar Documents

Publication Publication Date Title
DE19733691C2 (de) Bogen verarbeitende Rotationsdruckmaschine
EP0074045A1 (fr) Dispositif pour l'application de particules de poudre
EP0858889B1 (fr) Machine rotative à imprimer à feuilles comprenant un système de dépoussiérage avec un dispositif de guidage de feuilles
EP0006522A1 (fr) Procédé et dispositif d'ouverture de produits d'imprimerie pliés
EP0755887A2 (fr) Procédé et dispositif pour freiner pneumatiquement des feuilles dans le dispositif de décharge d'une machine rotative d'impression de feuilles
DE19937090B4 (de) Verfahren und Vorrichtung zum Bestäuben von bedruckten Bogen
EP0695584B1 (fr) Appareil de poudrage
EP0893253A1 (fr) Machine d'impression avec un dispositif pour le nettoyage du support d'impression au cours de son alimentation
EP0945268A1 (fr) Poudreur dans une machine à imprimer
DE19901670B4 (de) Verfahren und Vorrichtung zum Sauberhalten und/oder Reinigen einer Bogenauslage einer Bogenoffsetdruckmaschine
AT413274B (de) Bogenleiteinrichtung in einer rotationsdruckmaschine
EP0947321B1 (fr) Poudreur dans une machine d'impression
DE10131607A1 (de) Ausleger einer flächige Bedruckstoffe verarbeitenden Maschine
EP1049584A1 (fr) Procede et dispositif pour empecher une propagation incontrolee de poudre dans une machine a imprimer
WO2000009338A1 (fr) Procede et dispositif permettant de poudrer des feuilles imprimees
DE10157566B4 (de) Bogenleiteinrichtung mit einer Führungsfläche in einer Druckmaschine
EP0839650B1 (fr) Appareil de poudrage
EP1091855B1 (fr) Procede offset a feuilles et presse offset a feuilles
EP1834912B1 (fr) Machine de traitement des feuilles avec un dispositif de guidage par air comprimé pour des feuilles
DE19631175C1 (de) Vorrichtung zur Bogenzufuhr zu einer Druckmaschine
WO1998022287A1 (fr) Procede et dispositif pour le nettoyage de systemes convoyeurs
DE102009002083A1 (de) Verfahren und Vorrichtung zum Bestäuben von Bogenmaterial in einer Verarbeitungsmaschine
DE10252376A1 (de) Verarbeitungsmaschine mit einem Entstaubungssystem
DE10206890A1 (de) Druckwerk mit einer Vorrichtung zum Entsorgen von Partikeln und flächige Bedruckstoffe verarbeitende Maschine mit einem solchen Druckwerk
DE10207865A1 (de) Ausleger für eine flächige Bedruckstoffe verarbeitende Maschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990723

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR GB IT LI SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17Q First examination report despatched

Effective date: 20000413

AKX Designation fees paid

Free format text: AT CH DE FR GB IT LI SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20010615