EP1319507B1 - Dispositif pour l'aspiration de poudre et d'air chaud dans un dispositif de sortie d'une machine rotative d'impression pour feuilles - Google Patents

Dispositif pour l'aspiration de poudre et d'air chaud dans un dispositif de sortie d'une machine rotative d'impression pour feuilles Download PDF

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Publication number
EP1319507B1
EP1319507B1 EP20020023704 EP02023704A EP1319507B1 EP 1319507 B1 EP1319507 B1 EP 1319507B1 EP 20020023704 EP20020023704 EP 20020023704 EP 02023704 A EP02023704 A EP 02023704A EP 1319507 B1 EP1319507 B1 EP 1319507B1
Authority
EP
European Patent Office
Prior art keywords
suction
delivery device
sheet
powder
dusting
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 - Fee Related
Application number
EP20020023704
Other languages
German (de)
English (en)
Other versions
EP1319507A3 (fr
EP1319507A2 (fr
Inventor
Hans Zimmermann
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 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 AG filed Critical Koenig and Bauer AG
Publication of EP1319507A2 publication Critical patent/EP1319507A2/fr
Publication of EP1319507A3 publication Critical patent/EP1319507A3/fr
Application granted granted Critical
Publication of EP1319507B1 publication Critical patent/EP1319507B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

Definitions

  • the invention relates to a device for powder and hot air extraction, which is used in the delivery of sheet-fed rotary printing presses.
  • the invention relates to a boom of a sheet-fed rotary printing machine with a device for powder and air extraction, wherein in the boom sprockets are provided to rotate around the chains with these associated gripper carriage and a dusting device and / or a drying device between the conveyor and the back of the chains and a sheet guiding device are arranged below the conveying run of the chains.
  • a device of this kind is the DE 198 26 083 A1 removable.
  • the existing in the boom excess hot air can be sucked in the solution mentioned together with a portion of the powder / air mixture on the openings provided in the sheet guide.
  • a powder barrier extending over the width of the cantilever is provided in the region of the impression cylinder and a further powder barrier is provided on the empty strand.
  • the disadvantage of this solution is that the powder applied to the upper side of the printing material is sucked off only to a small extent by the openings arranged on the other printing material side. As a result of the suction caused by the movement of the gripper carriage, a large part of the powder / air mixture initially spreads in an uncontrolled manner in the boom until it is removed from the powder barrier.
  • a dusting device in which excess powder is absorbed by a downstream in the sheet running direction of the powder nozzle suction channel.
  • a nozzle row is also provided, from which emerges at an acute angle to the printing surface blowing air.
  • excess powder / air mixture can be sucked only from the top of the substrate.
  • the part of the excess powder that passes through this barrier can be freely distributed in the boom and in the wake of the returning gripper carriage still reach other units of the printing press, such as coating unit or printing units.
  • the DE 199 08 266 A1 discloses a Puderabsaug adopted for keeping clean and / or cleaning a sheet delivery, which is arranged between the empty and conveying run and on the side facing the empty strand has an opening for Puderabsaugung.
  • This device can be arranged below a blowing device, with which air is sucked from outside the boom and conveyed into the boom interior. This creates an air flow on the empty strand side of the chain, whereby at this point the spread of the powder / air mixture in the direction of pressure cylinder is prevented.
  • a disadvantage of this solution is that the excess, not adhering to the sheet powder can propagate unhindered in the boom until it is sucked off.
  • the powder / air mixture promoted by the movements resulting from the chain movement, can reach the impression cylinder starting from the side of the pollination device facing the printing cylinder.
  • the powder / air mixture is removed from the interior of the boom in an advantageous manner, at the same time the excess hot air is disposed of.
  • the currents generated by a plurality of suction devices for the extraction of hot air are combined to form an exhaust air flow.
  • the boom is both above and below the funded signatures adhering to the parts of the boom powder dust or sucked with powder interspersed air, whereby most of the excess powder is removable.
  • an additional powder barrier is provided, which advantageously prevents powder adhering to the gripper carriage and is transported by these or by the caused by the movement of the gripper carriage air flow to the printing unit.
  • the flow velocities necessary for effective extraction of the powder can be achieved in an energy-saving manner, since the suction devices for extracting the powder on the top side of the printed sheet act largely rectified to one another.
  • the efficiency of Puderabsaugung is advantageously further improved by the first Abschott founded is arranged to the inserted auxiliary equipment for powdering or drying, that forms a suction channel on the empty strand side.
  • the adjacent suction power creates an air flow, which is approximately parallel to the chain center line in the region of the suction opening approximately perpendicular to the chain centerline and at a greater distance to the suction port.
  • the flow is directed in the opposite direction to the movement of the empty cylinder back-running gripper carriage on the side facing the pressure cylinder suction.
  • the single drawing shows a sheet delivery and indicated the stack of sheets produced by him 5.
  • the sheets to be transported 17 are fixed to the gripper carriage 7 on gripper covers, not shown, fed to the stack of sheets 5 on the winningtrumseite the chains 4 and braked by means of a suction roller 6.
  • Below the conveying strand 4 and thus below the sheet conveying path extending sheet guide plates 10 are arranged along the arc path. These serve for bowing and have openings.
  • a continuous sheet baffle 10 may be provided.
  • the considered in sheet running direction last sheet guide plate 10 may be designed to be displaceable together with the suction roll, whereby an adaptation to changing formats is possible.
  • the openings of the sheet guide plates 10 are connected to a vacuum source.
  • each may be assigned a separate vacuum source.
  • Axial fans are used as a source of negative pressure. The air discharged from the print sheet by several axial fans can be brought together and conveyed from the boom via a central extraction system. Through the openings of the sheet guide plates 10 so that a large part of the voltage applied in the boom excess heat is dissipated.
  • the first Abschott Vietnamese 12 has a suction opening 14, via which by means of a suction, not shown, for example in the form of an axial fan, the powder / air mixture and the hot air from the interior are sucked.
  • a suction not shown, for example in the form of an axial fan
  • the powder / air mixture and the hot air from the interior are sucked.
  • the space between conveyor and slack side 4, 3 also takes on a pollination device 9 and / or a drying device 11.
  • the pollination device 9 is formed by a powder nozzle strip 8, a bell 18 which surrounds it, which is open to the conveying strand 4, and a second suction device 15.2.
  • the second suction device 15.2 is viewed in the conveying direction behind the powder nozzle strip 8 and extends transversely to the sheet conveying direction over the machine width.
  • the powder nozzle strip 8 is sealed with respect to the second suction device 15.2 so that the discharged powder is sucked from the powder only in the areas of the sheet that have left the powder zone.
  • the dusting device 9 and the drying device 11 have an outer shape which makes it possible to insert them into the side walls of the boom, in which recesses are provided for this purpose.
  • the recesses are arranged so that the second Abschott recognized 13 adjacent to the inserted pollination device 9. Seals may be provided between the two devices.
  • recesses for receiving the pollination device 9 and / or the drying device 11 are provided.
  • the pollination device 9 can be inserted over the recesses in the side walls, so that it is enclosed on all sides parallel to the sheet conveying plane by the second Abschott immunity 13.
  • the conveyed in the gripper closure sheet 17 is withdrawn from the printing cylinder and conveyed in the direction sheet pile 5. With the achievement of the sheet guide plates 10, it is sucked from its underside through the openings in the sheet guide plates 10 and thus guided on the sheet guide plates 10. On the upper side of the printed sheet 17, the radiation of the drying device 11 acts and heats it. This also heats the air surrounding the printed sheet 17, which is discharged to the sheet 17 through the sheet guide plates 10. When the printing sheet 17 has reached the powder nozzle row 8, it is dusted by this with powder.
  • Powder which has reached the gripper carriage 7, powder not adhering to the print sheet 17 is sucked off in the further course by the second suction device 15.2, which is arranged directly above the gripper carriage path. Due to the turbulent flow generated by the movement of the gripper carriage 7 17 remaining powder is whirled over the print sheet, so that a powder / air mixture is formed. This is then sucked off by the first suction device 15.1, which is arranged at a greater distance to the sheet conveying plane than the second suction device 15.2.
  • the air flow generated by the first and second suction means 15.1, 15.2 is then passed out of the boom through the suction opening 14 under the action of another suction not shown in the drawing. This results in a large flow velocity, since the suction devices 15.1, 15.2 and the suction not shown act rectified and thus add the suction power.
  • the air flow high flow velocity acts as a powder barrier against the paint or impression cylinder.
  • the first Abschott acquired 12 forms together with the second Abschott Road 13, the pollination device 9 and the drying device 11 a suction channel.
  • this suction channel there is a largely parallel to the catenary flow, which is directed in the opposite direction to the movement of the back empty gripper carriage above the drying device.
  • All flows from the boom are combined by means of an exhaust system and passed through a powder separator where the powder is removed from the powder / air mixture.
  • the first Abschott raised may be partially made rotatable about the pivot axis.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Claims (11)

  1. Dispositif de sortie de machine d'impression rotative à feuilles comportant une installation d'aspiration de poudre et d'air,
    - le dispositif de sortie comportant des roues à chaîne autour desquelles passent des chaînes équipées de chariots de préhension ainsi qu'une installation de saupoudrage et une installation de séchage entre le brin de transfert et le brin à vide des chaînes ainsi qu'une installation de guidage de feuilles sous le brin de transfert des chaînes et une première et une seconde installation de cloisonnement s'étendant chacune sur la largeur du dispositif de sortie, ces installations s'étendant le long du trajet des chariots de préhension, caractérisé en ce que
    - la première installation de cloisonnement (12) comporte un orifice d'aspiration (14) relié à une aspiration et situé au-dessus du brin à vide (3), et
    - la seconde installation de cloisonnement (13) est prévue entre le brin de transfert et le brin à vide (4, 3) des chaînes de façon que,
    * les deux installations de cloisonnement avec l'installation de saupoudrage (9) et l'installation de séchage (11), forment un canal d'aspiration s'étendant le long du trajet des chariots de préhension (7), et
    * la seconde installation de cloisonnement (13) reçoit une installation d'aspiration (15.1) s'étendant transversalement au chemin de transfert des feuilles, pour aspirer l'air chargé de poudre du côté du brin de transfert et le faire passer dans le canal d'aspiration.
  2. Dispositif de sortie selon la revendication 1,
    caractérisé en ce que
    la première installation d'aspiration (15.1) se trouve sous l'orifice d'aspiration (14).
  3. Dispositif de sortie selon la revendication 1,
    caractérisé en ce que
    la seconde installation de cloisonnement (13) comporte une ouverture pour recevoir l'installation de saupoudrage (9).
  4. Dispositif de sortie selon la revendication 3,
    caractérisé par
    des joints réalisés entre l'installation de saupoudrage (9) et la seconde installation de cloisonnement (13).
  5. Dispositif de sortie selon la revendication 1,
    caractérisé par
    des évidements dans les parois latérales du dispositif de sortie pour recevoir une installation de saupoudrage (9) et/ou l'installation de séchage (11).
  6. Dispositif de sortie selon la revendication 5,
    caractérisé en ce que
    l'installation de saupoudrage (9) et/ ou l'installation de séchage (11) sont réalisées dans les évidements des parois latérales du dispositif de sortie.
  7. Dispositif de sortie selon la revendication 3,
    caractérisé en ce que
    l'installation de saupoudrage (9) se compose d'une barrette à buse de poudre (8) et d'une seconde installation d'aspiration (15.2) en aval de la barrette à buse de poudre (8) dans le sens de circulation des feuilles.
  8. Dispositif de sortie selon la revendication 7,
    caractérisé en ce que
    la barrette à buse de poudre (8) est en partie entourée par une cloche (18).
  9. Dispositif de sortie selon la revendication 7,
    caractérisé en ce que
    la seconde installation d'aspiration (15.2) est plus près du plan de transfert des feuilles que la première installation d'aspiration (15.1).
  10. Dispositif de sortie selon la revendication 3,
    caractérisé en ce que
    l'installation de saupoudrage (9) est entourée par une cloche (18) ouverte du côté du brin de transfert et rendue étanche vis-à-vis de la seconde installation d'aspiration (15.2).
  11. Dispositif de sortie selon la revendication 1,
    caractérisé en ce que
    la première installation de cloisonnement (12) est réalisée de façon partiellement pivotante.
EP20020023704 2001-12-13 2002-10-23 Dispositif pour l'aspiration de poudre et d'air chaud dans un dispositif de sortie d'une machine rotative d'impression pour feuilles Expired - Fee Related EP1319507B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001161267 DE10161267B4 (de) 2001-12-13 2001-12-13 Einrichtung zur Puder- und Warmluftabsaugung im Ausleger einer Bogenrotationsdruckmaschine
DE10161267 2001-12-13

Publications (3)

Publication Number Publication Date
EP1319507A2 EP1319507A2 (fr) 2003-06-18
EP1319507A3 EP1319507A3 (fr) 2004-09-29
EP1319507B1 true EP1319507B1 (fr) 2010-09-01

Family

ID=7709092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020023704 Expired - Fee Related EP1319507B1 (fr) 2001-12-13 2002-10-23 Dispositif pour l'aspiration de poudre et d'air chaud dans un dispositif de sortie d'une machine rotative d'impression pour feuilles

Country Status (2)

Country Link
EP (1) EP1319507B1 (fr)
DE (2) DE10161267B4 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004058637B3 (de) * 2004-11-26 2005-12-29 Edwin Schneider Einrichtung zur Puderabsaugung an Druckmaschinen
DE102006055287A1 (de) * 2006-11-23 2008-05-29 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zur Führung von Bogenmaterial in einer Verarbeitungsmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207118C2 (de) * 1992-03-06 2001-05-10 Hans G Platsch Bestäubungsgerät
DE19516335C2 (de) * 1995-05-04 1997-07-31 Heidelberger Druckmasch Ag Ausleger für bedruckte Bogen
DE19647259A1 (de) * 1996-11-15 1998-05-20 Weitmann & Konrad Fa Verfahren und Vorrichtung zur Reinigung von Transportmitteln
DE19901670C5 (de) * 1998-01-20 2016-11-03 Hans-Peter Koch Verfahren und Vorrichtung zum Sauberhalten und/oder Reinigen einer Bogenauslage einer Bogenoffsetdruckmaschine
DE19859246A1 (de) * 1998-01-20 1999-07-22 Koch Hans Peter Bogenoffsetdruckverfahren und Bogenoffsetdruckmaschine
DE59903974D1 (de) * 1998-02-25 2003-02-13 Hans-Peter Koch Offsetdruckverfahren und offsetdruckmaschine
DE19826083B4 (de) * 1998-06-12 2005-03-31 Koenig & Bauer Ag Puderabsaugung in Auslegern von Bogenrotationsdruckmaschinen
DE10207865A1 (de) * 2001-03-13 2002-09-19 Heidelberger Druckmasch Ag Ausleger für eine flächige Bedruckstoffe verarbeitende Maschine

Also Published As

Publication number Publication date
DE10161267B4 (de) 2007-08-09
EP1319507A3 (fr) 2004-09-29
EP1319507A2 (fr) 2003-06-18
DE50214624D1 (de) 2010-10-14
DE10161267A1 (de) 2003-07-03

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