EP2228215A1 - Sheet-fed treating machine - Google Patents

Sheet-fed treating machine Download PDF

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Publication number
EP2228215A1
EP2228215A1 EP10154981A EP10154981A EP2228215A1 EP 2228215 A1 EP2228215 A1 EP 2228215A1 EP 10154981 A EP10154981 A EP 10154981A EP 10154981 A EP10154981 A EP 10154981A EP 2228215 A1 EP2228215 A1 EP 2228215A1
Authority
EP
European Patent Office
Prior art keywords
sheet
guiding
cylinder
powder
rotation
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
Application number
EP10154981A
Other languages
German (de)
French (fr)
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EP2228215B1 (en
Inventor
Bernhard Graziel
Karlheinz Mohn
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
Manroland AG
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Filing date
Publication date
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Publication of EP2228215A1 publication Critical patent/EP2228215A1/en
Application granted granted Critical
Publication of EP2228215B1 publication Critical patent/EP2228215B1/en
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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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/26—Spraying devices

Definitions

  • the invention relates to a sheet processing machine, in particular a sheet-fed printing machine, according to the preamble of claim 1. Furthermore, the invention relates to a method for applying powder on sheet.
  • powder printed substrates with powder particles or to dust them.
  • powdering or dusting of printed sheets is used to prevent the sheets from blocking in the region of the jib.
  • powder applied to the sheets can facilitate the drying of the applied printing ink.
  • the powdering device is positioned in the region of a sheet-guiding cylinder, namely a conveying cylinder, wherein the powdering device sprays the powder onto the printed sheets by means of powder nozzles.
  • the powder nozzles are according to the EP 0 886 729 B1 positioned in a suction box, with the aid of running in the suction box blowing lines in the direction of rotation of the sheet-guiding cylinder or cylinder conveyor both in an area in front of the powder nozzles and in an area after the powder nozzles blowing air can be directed to be powdered sheet.
  • the interior of the suction box, in which the powder nozzles are positioned, is connected to a suction fan, with the aid of which air can be sucked out of the suction chamber.
  • the present invention has the object to provide a novel sheet processing machine.
  • a sheet processing machine which is characterized at least in that: a) the powdering device has sheet guiding means extending along a peripheral portion of the sheet guiding cylinder; b) the powdering device comprises a powder application device which is positioned at a first circumferential position along the sheet guiding device, wherein powder can be directed onto the sheet with the aid of the powder application device; c) the powdering device has a blowing device which is positioned at a second circumferential position along the sheet guiding device, which is located in front of the first circumferential position in the direction of rotation of the sheet-guiding cylinder, with the aid of the blowing means air can be directed to the sheet; d) the powdering device has a suction device which is positioned at a third circumferential position along the sheet guiding device, which is located in the direction of rotation of the sheet-guiding cylinder after the first circumferential position, wherein air and powder can be
  • the inventive design of the sheet guiding device of the powdering device and the inventive arrangement of powder application device, blowing device and suction along the sheet guiding device uniform application of powder over the entire format to be powdered sheet can be ensured. Furthermore, contamination of the surroundings of the powdering device and thus adjacent to the powdering device positioned other assemblies of the sheet processing machine is avoided. Furthermore, powder can be applied to sheets to be powdered with high efficiency, whereby a powder consumption can be significantly reduced.
  • Fig. 1 shows a section of a designed as a sheet-fed press 10 sheet processing machine in the range of a last printing unit 11 and a printing unit 11 downstream boom 12 of the sheet-fed printing machine 10th
  • each printing unit 11 a forme cylinder 13, a transfer cylinder 14, a printing cylinder 15, an inking unit 16 and a dampening unit 17 has.
  • a printing form is positioned, with the aid of the inking 16 ink and using the dampening 17 fountain solution is applied to the positioned on the respective form cylinder 13 of the respective printing unit 11 printing form.
  • the printing ink passes via a transfer mold positioned on the transfer cylinder 14 onto the printing material to be printed, with the sheet to be printed being moved through a printing nip formed between the transfer cylinder 14 and the printing cylinder 15 of the respective printing unit 11.
  • Fig. 1 In the sheetfed press of the Fig. 1 is an in Fig. 1 integrated powdering device, not shown, which is preferably positioned in the region of the conveyor 19 of the boom 12 immediately upstream transfer cylinder 18.
  • Fig. 2 shows a section of the sheet-fed printing machine 10 of Fig. 1 in the region of the two printing cylinder 11 downstream of the transfer cylinder 18, wherein in the region of the conveyor 19 of the boom 12 immediately upstream transfer cylinder 18, the powdering device 21 is positioned, by means of which the same applied to the printed sheet prior to the transfer to the conveyor 19 of the boom 12 powder can be.
  • the powdering device 21 comprises a sheet guiding device 22, which extends along a peripheral section of a sheet-guiding cylinder, namely in the embodiment shown along a peripheral portion of the transfer cylinder 18 immediately preceding the delivery device 19 of the delivery arm 12.
  • the sheet guide device 22 is contoured such that the same at a front in the direction of rotation 23 of the sheet-guiding cylinder 18 front portion 24 extends substantially tangentially to the peripheral contour of the sheet-guiding cylinder 18, wherein the distance of the sheet guiding device 22, namely the front portion 24 thereof, from sheet-guiding cylinder 18 seen in the same direction of rotation decreases. Accordingly, as viewed in the direction of rotation 23 of the sheet-guiding cylinder 18, the distance between the front portion 24 of the sheet guiding device 22 and the sheet-guiding cylinder 18 is greater than in a rear region of the front portion 24 of the sheet guiding device 22.
  • rear portion 25 of the sheet guiding device 22 is the same circular arc contoured, in the region of this rear portion 25, the distance of the sheet guiding device 22 from the sheet-guiding cylinder 18 is approximately constant.
  • a central portion 26 of the sheet guiding device 22 which is positioned between the front portion 24 and the rear portion 25 thereof, the distance thereof from the sheet-guiding cylinder 18 is greater than that seen in the direction of rotation 23 of the cylinder 18 in front of and behind the central portion 26th lying portions 24 and 25, wherein in the illustrated embodiment, the central portion 26 of the sheet guiding device 22 is bell-like widened relative to the sections 24 and 25.
  • the powdering device 21 further has a powder application device 27, which at a first circumferential position along the sheet guiding device 22 is positioned, namely in the embodiment of Fig. 2 in the region of the central portion 26 of the sheet guiding device 22nd
  • the powder application device 27 has a plurality of powder nozzles 28 positioned next to one another in the axial direction of the sheet-guiding cylinder 18, by means of which powder in the form of a powder jet 29 can be directed onto sheets to be powdered. To be powdered sheets are guided between the outer periphery of the sheet-guiding cylinder 18 and the sheet guiding device 22 and therefore passed on the powder applicator 27.
  • the powdering device 21 further has a blowing device 30, which is positioned at a second circumferential position along the sheet guiding device 22, which is located in the direction of rotation 23 of the sheet-guiding cylinder 18 in front of the first circumferential position, namely in the region of the front portion 24 of the sheet guiding device 22. Assistance the blowing device 30 air 31 can be directed to bepudernde sheet.
  • the powdering device 21 has a suction device 32, which is positioned at a third circumferential position along the sheet guiding device 22, which is located in the direction of rotation 23 of the sheet-guiding cylinder 18 after the first circumferential position, namely in the region of the rear portion 25 of the sheet guiding device 22nd With the aid of the suction device 32, a mixture 33 of air and powder can be sucked off.
  • the sheet guiding device 22 is essentially closed, so that a defined air flow 34 for defined guidance of the sheets to be powdered is formed between the blowing device 30 positioned in the front section 24 thereof and the suction device 33 positioned in the rear section 25 thereof.
  • the sheet guiding device 22 is designed substantially closed, in the circumferential direction thereof.
  • the sheet guide device 22 on the one hand on a circumferentially and axially extending wall 35 and on the other hand in the circumferential direction and in the radial direction extending side walls 36 (see Fig. 3 ) is executed substantially closed, between the side walls 36 and the outer peripheral surface of the sheet-guiding cylinder 18 for Abutter a trained example, as a brush seal or sealing lip seal member 37 is provided.
  • the air flow 34 in the space 38 formed between the sheet guiding device 22 and the outer circumference of the sheet-guiding cylinder 18 is substantially made up of the amount of the air 31 directed onto the sheets via the blowing device 30 and the amount of the mixture 33 extracted by the suction device 32 and powder.
  • a larger amount of air is sucked in the region of the suction device 33 than in the area of the blowing device 30 is directed to the sheet, for this purpose then at a fourth circumferential position of the sheet guiding device 22, seen in the direction of rotation 23 of the sheet-guiding cylinder 18 after the third circumferential position, at which the suction device 33 is positioned, is located, at least one opening 39 is inserted for the intake of ambient air.
  • the powdering device 21 comprises a further blowing device 40 which is positioned at a fifth circumferential position along the sheet guiding device 22, which is located in the direction of rotation 23 of the sheet-guiding cylinder 18 after the third circumferential position and therefore after the suction device 32.
  • blowing air can be directed into a channel of the sheet-guiding cylinder 18 for cleaning the same, namely when no sheet is guided past the further blowing device 40.
  • the channel, which is cleaned by means of the blowing device 40 is preferably a channel in which gripping devices for sheets to be conveyed by means of the sheet-guiding cylinder 18 are introduced. These grippers detect arcs at a leading edge thereof.
  • the fifth circumferential position of the sheet guiding device 22 on which the further blowing device 40 is positioned is positioned between the third circumferential position at which the suction device 32 is positioned and the fourth circumferential position at which the or each aperture is formed.
  • the powdering device 21 is at least partially displaceable relative to the sheet-guiding cylinder 18, namely, pivotable about the in Fig. 2 shown axis 41. So are according to Fig. 2
  • the blowing device 30 and the powder applicator 27 together with the corresponding sections 24 and 26 of the sheet guiding device 22 relative to the sheet-guiding cylinder 18 pivotally.
  • FIG. 2 shows the blowing device 30 and the powder applicator 27 in two different positions, namely in a pivoted to the sheet-guiding cylinders 18 working position and in a direction of arrow 42 weggeschwenkten by the sheet-guiding cylinder maintenance position, wherein in the maintenance position in which the blowing device with 30 ' and the powder applicator is numbered 27 ', access to the sheet-guiding cylinder 18 for cleaning it is facilitated.
  • the entire powdering device 21 in particular pivotable to design. It is also possible to make only the blowing device 30 displaceable together with the front section 24 of the sheet guiding device 22.
  • a cylinder cleaning device for the sheet-guiding cylinder 18 to which the powdering device 21 is assigned may be integrated in the sheet-fed printing machine 10, in which case the cylinder cleaning device, not shown in the figures, along another peripheral section of the cylinder 18 as the powdering device 21 is positioned.
  • the powdering device 21 and the not-shown cylinder cleaning device approximately diametrically opposite to the sheet-guiding cylinder 18 to position.
  • blowing air can be directed onto the same to clean the sheet-guiding cylinder 18, in order to pneumatically abrade off powder adhering to the outer peripheral surface of the cylinder 18.
  • the sheet guiding device 22 is substantially closed. Only at the positions at which air is to be directed onto the sheet to be powdered via the blowing device 30 and at which powder is to be directed onto the sheets via the powder nozzles 28 and at which the mixture 33 of air and powder is sucked off via the suction device 32 should, it is open. Further openings may be present in the region of the further blowing device 40 and the openings 39 for drawing in ambient air. Overall, this ensures that virtually no powder can contaminate the surroundings of the powdering device 21.
  • corresponding openings are introduced into the sheet guiding device 22 in the region of the suction device 32 so that the suction of the mixture 23 of the arc over the entire axial extent and circumferential extent of the suction device 32 evenly and flat he follows.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The machine has a powdering device (21) including a blower device (30) positioned in a circumferential position along a sheet guiding device (22), which lies in a rotational direction of a sheet guiding cylinder (18). The powdering device include a suction device (32) positioned in another circumferential position along the sheet guiding device that lies in the rotational direction of the sheet guiding cylinder. The sheet guiding device is closed, so that a defined air flow between the blower device and suction device guides a sheet in a region of a powder applicator (27). An independent claim is also included for a method for applying a powder on a sheet to be processed.

Description

Die Erfindung betrifft eine Bogenverarbeitungsmaschine, insbesondere eine Bogendruckmaschine, nach dem Oberbegriff des Anspruchs 1. Des Weiteren betrifft die Erfindung ein Verfahren zum Auftragen von Puder auf Bogen.The invention relates to a sheet processing machine, in particular a sheet-fed printing machine, according to the preamble of claim 1. Furthermore, the invention relates to a method for applying powder on sheet.

In der Drucktechnik ist es bereits Stand der Technik, bedruckte Bedruckstoffe mit Puderteilchen zu bepudern bzw. zu bestäuben. In Bogendruckmaschinen dient die Bepuderung bzw. Bestäubung von bedruckten Bogen dazu, ein Verblocken der Bogen im Bereich des Auslegers zu verhindern. Weiterhin kann auf die Bogen aufgetragenes Puder die Trocknung der aufgetragenen Druckfarbe erleichtern.In printing technology, it is already state of the art to powder printed substrates with powder particles or to dust them. In sheetfed presses, the powdering or dusting of printed sheets is used to prevent the sheets from blocking in the region of the jib. Furthermore, powder applied to the sheets can facilitate the drying of the applied printing ink.

Aus der EP 0 886 579 B1 ist eine Bogendruckmaschine mit einer in die Bogendruckmaschine integrierten Bepuderungsvorrichtung zum Auftragen von Puder auf bedruckte Bogen bekannt. Nach diesem Stand der Technik ist die Bepuderungsvorrichtung im Bereich eines bogenführenden Zylinders, nämlich eines Förderzylinders, positioniert, wobei die Bepuderungsvorrichtung das Puder auf die bedruckten Bogen mithilfe von Puderdüsen sprüht.From the EP 0 886 579 B1 is a sheet-fed press with a built-in sheet-fed machine powdering device for applying powder on printed sheet known. According to this prior art, the powdering device is positioned in the region of a sheet-guiding cylinder, namely a conveying cylinder, wherein the powdering device sprays the powder onto the printed sheets by means of powder nozzles.

Die Puderdüsen sind dabei gemäß der EP 0 886 729 B1 in einem Saugkasten positioniert, wobei mit Hilfe von im Saugkasten verlaufenden Blasleitungen in Drehrichtung des bogenführenden Zylinders bzw. Förderzylinders gesehen sowohl in einem Bereich vor den Puderdüsen als auch in einem Bereich nach den Puderdüsen Blasluft auf zu bepudernde Bogen gerichtet werden kann. Das Innere des Saugkastens, in welchem die Puderdüsen positioniert sind, ist mit einem Sauggebläse verbunden, mithilfe dessen Luft aus der Saugkammer abgesaugt werden kann.The powder nozzles are according to the EP 0 886 729 B1 positioned in a suction box, with the aid of running in the suction box blowing lines in the direction of rotation of the sheet-guiding cylinder or cylinder conveyor both in an area in front of the powder nozzles and in an area after the powder nozzles blowing air can be directed to be powdered sheet. The interior of the suction box, in which the powder nozzles are positioned, is connected to a suction fan, with the aid of which air can be sucked out of the suction chamber.

Mit der aus der EP 0 886 579 B1 bekannten Bepuderungsvorrichtung kann zwar prinzipiell Puder auf gedruckte Bogen aufgetragen werden, eine gewünschte Gleichmäßigkeit des Puderauftrags über das gesamte Format der Bogen sowie eine unerwünschte Kontamination der Umgebung mit Puder stellen jedoch bislang ungelöste Probleme dar. Es besteht daher Bedarf an einer Bogenverarbeitungsmaschine mit einer Bepuderungsvorrichtung, mithilfe derer einerseits auf zu bepudernde Bogen über das gesamte Format derselben gleichmäßig Puder aufgetragen werden kann, und mithilfe derer andererseits eine Kontamination einer Umgebung der Bepuderungsvorrichtung und damit der übrigen Baugruppen der bogenverarbeitenden Maschine mit Puder vermieden werden kann.With the from the EP 0 886 579 B1 Although known powdering device can in principle be applied to printed sheets powder, a desired uniformity of the powder application over the entire format of the sheet and an undesirable contamination of the environment with powder but so far unsolved problems. There is therefore a need for a sheet processing machine with a powdering, using which on the one hand can be applied evenly to be powdered sheet over the entire format of the same powder, and by means of which on the other hand contamination of an environment of the powdering device and thus the other components of the sheet processing machine can be avoided with powder.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde eine neuartige Bogenverarbeitungsmaschine zu schaffen. Diese Aufgabe wird durch eine Bogenverarbeitungsmaschine gemäß Anspruch 1, die zumindest dadurch gekennzeichnet ist, dass: a) die Bepuderungsvorrichtung eine Bogenführungseinrichtung aufweist, die sich entlang eines Umfangsabschnitts des bogenführenden Zylinders erstreckt; b) die Bepuderungsvorrichtung eine Puderauftrageinrichtung aufweist, die an einer ersten Umfangsposition entlang der Bogenführungseinrichtung positioniert ist, wobei mit Hilfe der Puderauftragseinrichtung Puder auf die Bogen richtbar ist; c) die Bepuderungsvorrichtung eine Blaseinrichtung aufweist, die an einer zweiten Umfangsposition entlang der Bogenführungseinrichtung, die in Drehrichtung des bogenführenden Zylinders gesehen vor der ersten Umfangsposition liegt, positioniert ist, wobei mit Hilfe der Blaseinrichtung Luft auf die Bogen richtbar ist; d) die Bepuderungsvorrichtung eine Absaugeinrichtung aufweist, die an einer dritten Umfangsposition entlang der Bogenführungseinrichtung, die in Drehrichtung des bogenführenden Zylinders gesehen nach der ersten Umfangsposition liegt, positioniert ist, wobei mit Hilfe der Absaugeinrichtung Luft und Puder absaugbar ist; e) die Bogenführungseinrichtung im Wesentlichen geschlossen ist, sodass sich zwischen der Blaseinrichtung und der Absaugeinrichtung eine definierte Luftströmung zur Führung der Bogen insbesondere im Bereich der Puderauftrageinrichtung ausbildet.On this basis, the present invention has the object to provide a novel sheet processing machine. This object is achieved by a sheet processing machine according to claim 1, which is characterized at least in that: a) the powdering device has sheet guiding means extending along a peripheral portion of the sheet guiding cylinder; b) the powdering device comprises a powder application device which is positioned at a first circumferential position along the sheet guiding device, wherein powder can be directed onto the sheet with the aid of the powder application device; c) the powdering device has a blowing device which is positioned at a second circumferential position along the sheet guiding device, which is located in front of the first circumferential position in the direction of rotation of the sheet-guiding cylinder, with the aid of the blowing means air can be directed to the sheet; d) the powdering device has a suction device which is positioned at a third circumferential position along the sheet guiding device, which is located in the direction of rotation of the sheet-guiding cylinder after the first circumferential position, wherein air and powder can be sucked with the aid of the suction device; e) the sheet guiding device is substantially closed, so that a defined flow of air for guiding the sheet is formed between the blowing device and the suction device, in particular in the region of the powder application device.

Durch die erfindungsgemäße Ausbildung der Bogenführungseinrichtung der Bepuderungseinrichtung und die erfindungsgemäße Anordnung von Puderauftrageinrichtung, Blaseinrichtung und Absaugeinrichtung entlang der Bogenführungseinrichtung kann ein gleichmäßiger Auftrag von Puder über das gesamte Format zu bepudernder Bogen gewährleistet werden. Weiterhin wird eine Kontamination der Umgebung der Bepuderungsvorrichtung und damit benachbart zur Bepuderungsvorrichtung positionierter anderer Baugruppen der Bogenverarbeitungsmaschine vermieden. Ferner kann mit einer hohen Effizienz Puder auf zu bepudernde Bogen aufgetragen werden, wodurch ein Puderverbrauch deutlich reduziert werden kann.The inventive design of the sheet guiding device of the powdering device and the inventive arrangement of powder application device, blowing device and suction along the sheet guiding device uniform application of powder over the entire format to be powdered sheet can be ensured. Furthermore, contamination of the surroundings of the powdering device and thus adjacent to the powdering device positioned other assemblies of the sheet processing machine is avoided. Furthermore, powder can be applied to sheets to be powdered with high efficiency, whereby a powder consumption can be significantly reduced.

Das erfindungsgemäße Verfahren ist in Anspruch 16 definiert.The method according to the invention is defined in claim 16.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:

Fig. 1:
einen Ausschnitt aus einer als Bogendruckmaschine ausgebildeten Bogenverarbeitungsmaschine im Bereich eines letzten Druckwerks und eines sich an das letzte Druckwerk anschließenden Auslegers;
Fig. 2:
eine schematisierte Darstellung einer im Bereich eines bogenführenden Zylinders der Bogendruckmaschine angeordneten Bepuderungsvorrichtung zum Auftragen von Puder auf bedruckte Bogen; und
Fig. 3:
einen Querschnitt durch die Anordnung der Fig. 2 entlang der Schnittrichtung III-III in Fig. 2.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
Fig. 1:
a section of a sheet-fed printing machine designed as a sheet-fed machine in the region of a last printing unit and a subsequent to the last printing unit boom;
Fig. 2:
a schematic representation of a arranged in the region of a sheet-guiding cylinder of the sheet printing machine powdering device for applying powder on printed sheets; and
3:
a cross section through the arrangement of Fig. 2 along the cutting direction III-III in Fig. 2 ,

Fig. 1 zeigt einen Ausschnitt aus einer als Bogendruckmaschine 10 ausgebildeten Bogenverarbeitungsmaschine im Bereich eines letzten Druckwerks 11 und eines dem Druckwerk 11 nachgeordneten Auslegers 12 der Bogendruckmaschine 10. Fig. 1 shows a section of a designed as a sheet-fed press 10 sheet processing machine in the range of a last printing unit 11 and a printing unit 11 downstream boom 12 of the sheet-fed printing machine 10th

In der Bogendruckmaschine 10 werden Bogen in den Druckwerken 11 mit Druckfarbe bedruckt, wobei jedes Druckwerk 11 einen Formzylinder 13, einen Übertragungszylinder 14, einen Druckzylinder 15, ein Farbwerk 16 sowie ein Feuchtwerk 17 aufweist. Auf dem Formzylinder 13 eines jeden Druckwerks 11 ist eine Druckform positioniert, wobei mithilfe des Farbwerks 16 Druckfarbe und mithilfe des Feuchtwerks 17 Feuchtmittel auf die auf dem jeweiligen Formzylinder 13 des jeweiligen Druckwerks 11 positionierte Druckform aufgetragen wird. Ausgehend von der Druckform gelangt die Druckfarbe über eine auf dem Übertragungszylinder 14 positionierte Übertragungsform auf den zu bedruckenden Bedruckstoff, wobei zu bedruckende Bogen durch einen Druckspalt, der zwischen dem Übertragungszylinder 14 und dem Druckzylinder 15 des jeweiligen Druckwerks 11 ausgebildet ist, hindurchbewegt wird.In the sheet-fed press 10 sheets are printed in the printing units 11 with ink, each printing unit 11 a forme cylinder 13, a transfer cylinder 14, a printing cylinder 15, an inking unit 16 and a dampening unit 17 has. On the forme cylinder 13 of each printing unit 11, a printing form is positioned, with the aid of the inking 16 ink and using the dampening 17 fountain solution is applied to the positioned on the respective form cylinder 13 of the respective printing unit 11 printing form. Starting from the printing form, the printing ink passes via a transfer mold positioned on the transfer cylinder 14 onto the printing material to be printed, with the sheet to be printed being moved through a printing nip formed between the transfer cylinder 14 and the printing cylinder 15 of the respective printing unit 11.

Um zu bedruckende Bogen durch die einzelnen Druckwerke 11 zu bewegen sowie ausgehend vom letzten Druckwerk 11 dem Ausleger 12 zuzuführen, sind neben den Druckzylindern 15 weitere bogenführende Zylinder, nämlich Transferzylinder 18, vorhanden. So sind gemäß Fig. 1 dem Druckzylinder 15 des in Fig. 1 gezeigten Druckwerks 11 Transferzylinder 18 vorgeschaltet sowie nachgeschaltet, wobei die beiden dem Druckzylinder 15 des Druckwerks 11 nachgeschalteten Transferzylinder 18 die bedruckten Bogen einer Fördereinrichtung 19 des Auslegers 12 zuführen, der letztendlich bedruckte Bogen in Form eines Auslegestapels 20 aus der Bogendruckmaschine auslegt.In order to move sheets to be printed by the individual printing units 11 and starting from the last printing unit 11 to supply the boom 12, in addition to the printing cylinders 15 further arc-guiding cylinder, namely transfer cylinder 18, are available. So are according to Fig. 1 the impression cylinder 15 of in Fig. 1 shown transfer cylinder 18 upstream and downstream, wherein the two of the printing cylinder 15 of the printing unit 11 downstream transfer cylinder 18, the printed sheet of a conveyor 19 of the boom 12 perform the finally designed sheet in the form of a Auslegestapels 20 from the sheet-fed printing machine.

In die Bogendruckmaschine der Fig. 1 ist eine in Fig. 1 nicht-gezeigte Bepuderungsvorrichtung integriert, die vorzugsweise im Bereich des der Fördereinrichtung 19 des Auslegers 12 unmittelbar vorgelagerten Transferzylinders 18 positioniert ist. Fig. 2 zeigt einen Ausschnitt aus der Bogendruckmaschine 10 der Fig. 1 im Bereich der beiden dem Druckwerk 11 nachgeordneten Transferzylinder 18, wobei im Bereich des der Fördereinrichtung 19 des Auslegers 12 unmittelbar vorgelagerten Transferzylinders 18 die Bepuderungsvorrichtung 21 positioniert ist, mithilfe derer auf die bedruckten Bogen vor der Übergabe desselben an die Fördereinrichtung 19 des Auslegers 12 Puder aufgetragen werden kann.In the sheetfed press of the Fig. 1 is an in Fig. 1 integrated powdering device, not shown, which is preferably positioned in the region of the conveyor 19 of the boom 12 immediately upstream transfer cylinder 18. Fig. 2 shows a section of the sheet-fed printing machine 10 of Fig. 1 in the region of the two printing cylinder 11 downstream of the transfer cylinder 18, wherein in the region of the conveyor 19 of the boom 12 immediately upstream transfer cylinder 18, the powdering device 21 is positioned, by means of which the same applied to the printed sheet prior to the transfer to the conveyor 19 of the boom 12 powder can be.

Die Bepuderungsvorrichtung 21 umfasst eine Bogenführungseinrichtung 22, die sich entlang eines Umfangsabschnitts eines bogenführenden Zylinders, nämlich im gezeigten Ausführungsbeispiels entlang eines Umfangsabschnitts des der Fördereinrichtung 19 des Auslegers 12 unmittelbar vorgelagerten Transferzylinders 18, erstreckt.The powdering device 21 comprises a sheet guiding device 22, which extends along a peripheral section of a sheet-guiding cylinder, namely in the embodiment shown along a peripheral portion of the transfer cylinder 18 immediately preceding the delivery device 19 of the delivery arm 12.

Im Ausführungsbeispiel der Fig. 2 ist die Bogenführungseinrichtung 22 derart konturiert, dass dieselbe an einem in Drehrichtung 23 des bogenführenden Zylinders 18 gesehen vorderen Abschnitt 24 sich im Wesentlichen tangential zur Umfangskontur des bogenführenden Zylinders 18 erstreckt, wobei sich der Abstand der Bogenführungseinrichtung 22, nämlich des vorderen Abschnitts 24 derselben, vom bogenführenden Zylinder 18 in Drehrichtung desselben gesehen verringert. In Drehrichtung 23 des bogenführenden Zylinders 18 gesehen vorne ist demnach der Abstand zwischen dem vorderen Abschnitt 24 der Bogenführungseinrichtung 22 und dem bogenführenden Zylinder 18 größer als in einem hinteren Bereich des vorderen Abschnitts 24 der Bogenführungseinrichtung 22.In the embodiment of Fig. 2 the sheet guide device 22 is contoured such that the same at a front in the direction of rotation 23 of the sheet-guiding cylinder 18 front portion 24 extends substantially tangentially to the peripheral contour of the sheet-guiding cylinder 18, wherein the distance of the sheet guiding device 22, namely the front portion 24 thereof, from sheet-guiding cylinder 18 seen in the same direction of rotation decreases. Accordingly, as viewed in the direction of rotation 23 of the sheet-guiding cylinder 18, the distance between the front portion 24 of the sheet guiding device 22 and the sheet-guiding cylinder 18 is greater than in a rear region of the front portion 24 of the sheet guiding device 22.

An einem in Drehrichtung 23 des bogenführenden Zylinders 18 gesehen hinteren Abschnitt 25 der Bogenführungseinrichtung 22 ist dieselbe kreisbogenförmig konturiert, wobei im Bereich dieses hinteren Abschnitts 25 der Abstand der Bogenführungseinrichtung 22 vom bogenführenden Zylinder 18 in etwa konstant ist.At a viewed in the direction of rotation 23 of the sheet-guiding cylinder 18 rear portion 25 of the sheet guiding device 22 is the same circular arc contoured, in the region of this rear portion 25, the distance of the sheet guiding device 22 from the sheet-guiding cylinder 18 is approximately constant.

In einem mittleren Abschnitt 26 der Bogenführungseinrichtung 22, der zwischen dem vorderen Abschnitt 24 und dem hinteren Abschnitt 25 derselben positioniert ist, ist der Abstand derselben vom bogenführenden Zylinder 18 größer als an den in Drehrichtung 23 des Zylinders 18 gesehen vor und hinter dem mittleren Abschnitt 26 liegenden Abschnitten 24 und 25, wobei im gezeigten Ausführungsbeispiel der mittlere Abschnitt 26 der Bogenführungseinrichtung 22 glockenartig gegenüber den Abschnitten 24 und 25 aufgeweitet ist.In a central portion 26 of the sheet guiding device 22, which is positioned between the front portion 24 and the rear portion 25 thereof, the distance thereof from the sheet-guiding cylinder 18 is greater than that seen in the direction of rotation 23 of the cylinder 18 in front of and behind the central portion 26th lying portions 24 and 25, wherein in the illustrated embodiment, the central portion 26 of the sheet guiding device 22 is bell-like widened relative to the sections 24 and 25.

Die Bepuderungsvorrichtung 21 verfügt weiterhin über eine Puderauftrageinrichtung 27, die an einer ersten Umfangsposition entlang der Bogenführungseinrichtung 22 positioniert ist, nämlich im Ausführungsbeispiel der Fig. 2 im Bereich des mittleren Abschnitts 26 der Bogenführungseinrichtung 22.The powdering device 21 further has a powder application device 27, which at a first circumferential position along the sheet guiding device 22 is positioned, namely in the embodiment of Fig. 2 in the region of the central portion 26 of the sheet guiding device 22nd

Die Puderauftrageinrichtung 27 verfügt über mehrere in Axialrichtung des bogenführenden Zylinders 18 gesehen nebeneinander positionierte Puderdüsen 28, mithilfe derer Puder in Form eines Puderstrahls 29 auf zu bepudernde Bogen richtbar ist. Zu bepudernde Bogen werden zwischen dem äußeren Umfang des bogenführenden Zylinders 18 und der Bogenführungseinrichtung 22 geführt und demnach an der Puderauftrageinrichtung 27 vorbeigeführt.The powder application device 27 has a plurality of powder nozzles 28 positioned next to one another in the axial direction of the sheet-guiding cylinder 18, by means of which powder in the form of a powder jet 29 can be directed onto sheets to be powdered. To be powdered sheets are guided between the outer periphery of the sheet-guiding cylinder 18 and the sheet guiding device 22 and therefore passed on the powder applicator 27.

Die Bepuderungsvorrichtung 21 verfügt weiterhin über eine Blaseinrichtung 30, die an einer zweiten Umfangsposition entlang der Bogenführungseinrichtung 22, die in Drehrichtung 23 des bogenführenden Zylinders 18 gesehen vor der ersten Umfangsposition liegt, positioniert ist, nämlich im Bereich des vorderen Abschnitts 24 der Bogenführungseinrichtung 22. Mithilfe der Blaseinrichtung 30 ist Luft 31 auf zu bepudernde Bogen richtbar.The powdering device 21 further has a blowing device 30, which is positioned at a second circumferential position along the sheet guiding device 22, which is located in the direction of rotation 23 of the sheet-guiding cylinder 18 in front of the first circumferential position, namely in the region of the front portion 24 of the sheet guiding device 22. Assistance the blowing device 30 air 31 can be directed to bepudernde sheet.

Ferner verfügt die Bepuderungsvorrichtung 21 über eine Absaugeinrichtung 32, die an einer dritten Umfangsposition entlang der Bogenführungseinrichtung 22, die in Drehrichtung 23 des bogenführenden Zylinders 18 gesehen, nach der ersten Umfangsposition liegt, positioniert ist, nämlich im Bereich des hinteren Abschnitts 25 der Bogenführungseinrichtung 22. Mithilfe der Absaugeinrichtung 32 kann ein Gemisch 33 aus Luft und Puder abgesaugt werden.Furthermore, the powdering device 21 has a suction device 32, which is positioned at a third circumferential position along the sheet guiding device 22, which is located in the direction of rotation 23 of the sheet-guiding cylinder 18 after the first circumferential position, namely in the region of the rear portion 25 of the sheet guiding device 22nd With the aid of the suction device 32, a mixture 33 of air and powder can be sucked off.

Die Bogenführungseinrichtung 22 ist im Wesentlichen geschlossen, sodass sich zwischen der im vorderen Abschnitt 24 derselben positionierten Blaseinrichtung 30 und der im hinteren Abschnitt 25 derselben positionierten Absaugeinrichtung 33 eine definierte Luftströmung 34 zur definierten Führung der zu bepudernden Bogen ausbildet.The sheet guiding device 22 is essentially closed, so that a defined air flow 34 for defined guidance of the sheets to be powdered is formed between the blowing device 30 positioned in the front section 24 thereof and the suction device 33 positioned in the rear section 25 thereof.

Bedingt durch die definierte Luftströmung 34 werden zu bepudernde Bogen insbesondere im Bereich der Puderauftrageinrichtung 27 und damit im mittleren Abschnitt 26 der Bogenführungseinrichtung 22 zwischen der Bogenführungseinrichtung 22 und dem äußeren Umfang des bogenführenden Zylinders 18 stabil geführt, und zwar derart, dass sich über das gesamte Format der zu bepudernden Bogen ein definierter, gleichförmiger Abstand zu den Puderdüsen 28 ausbildet. Hierdurch kann über das gesamte Format der zu bepudernden Bogen ein gleichmäßiger Puderauftrag gewährleistet werden.Due to the defined air flow 34 to be powdered sheet in particular in the area of the powder applicator 27 and thus in the middle section 26 of the sheet guiding device 22 between the sheet guiding device 22 and the outer periphery of the sheet-guiding cylinder 18 stably guided, in such a way that over the entire format of the sheets to be powdered a defined, uniform distance to the powder nozzles 28 is formed. As a result, a uniform powder application can be ensured over the entire format of the sheets to be powdered.

Wie bereits erwähnt, ist die Bogenführungseinrichtung 22 im Wesentlichen geschlossen ausgeführt, und zwar in Umfangsrichtung derselben. So ist die Bogenführungseinrichtung 22 einerseits an einer sich in Umfangsrichtung und in Axialrichtung erstreckenden Wand 35 sowie andererseits an sich in Umfangsrichtung und in Radialrichtung erstreckenden Seitenwänden 36 (siehe Fig. 3) im Wesentlichen geschlossen ausgeführt, wobei zwischen den Seitenwänden 36 und der äußeren Umfangsfläche des bogenführenden Zylinders 18 zur Abrichtung ein zum Beispiel als Bürstendichtung oder Dichtlippe ausgebildetes Dichtungselement 37 vorgesehen ist.As already mentioned, the sheet guiding device 22 is designed substantially closed, in the circumferential direction thereof. Thus, the sheet guide device 22 on the one hand on a circumferentially and axially extending wall 35 and on the other hand in the circumferential direction and in the radial direction extending side walls 36 (see Fig. 3 ) is executed substantially closed, between the side walls 36 and the outer peripheral surface of the sheet-guiding cylinder 18 for Abrichtung a trained example, as a brush seal or sealing lip seal member 37 is provided.

Die Luftströmung 34 in dem zwischen der Bogenführungseinrichtung 22 und dem äußeren Umfang des bogenführenden Zylinders 18 ausgebildeten Raum 38 wird im Wesentlichen durch die Menge der über die Blaseinrichtung 30 auf die Bogen gerichteten Luft 31 und der Menge des durch die Absaugeinrichtung 32 abgesaugten Gemischs 33 aus Luft und Puder bestimmt. Vorzugsweise wird im Bereich der Absaugeinrichtung 33 eine größere Luftmenge abgesaugt als im Bereich der Blaseinrichtung 30 auf die Druckbogen gerichtet wird, wobei hierzu dann an einer vierten Umfangsposition der Bogenführungseinrichtung 22, die in Drehrichtung 23 des bogenführenden Zylinders 18 gesehen nach der dritten Umfangsposition, an welcher die Absaugeinrichtung 33 positioniert ist, liegt, mindestens eine Öffnung 39 zur Ansaugung von Umgebungsluft eingebracht ist.The air flow 34 in the space 38 formed between the sheet guiding device 22 and the outer circumference of the sheet-guiding cylinder 18 is substantially made up of the amount of the air 31 directed onto the sheets via the blowing device 30 and the amount of the mixture 33 extracted by the suction device 32 and powder. Preferably, a larger amount of air is sucked in the region of the suction device 33 than in the area of the blowing device 30 is directed to the sheet, for this purpose then at a fourth circumferential position of the sheet guiding device 22, seen in the direction of rotation 23 of the sheet-guiding cylinder 18 after the third circumferential position, at which the suction device 33 is positioned, is located, at least one opening 39 is inserted for the intake of ambient air.

Durch diese Ansaugung von Umgebungsluft stellt sich dann eine Luftströmung ein, die von der oder jeder Öffnung 39 zur Absaugeinrichtung 32 gerichtet ist und der Luftströmung 34 im Bereich der Absaugeinrichtung 32 entgegen wirkt. Hierdurch kann sicher vermieden werden, dass Puder in einen Abschnitt der Bogenführungseinrichtung 22 gelangt, der in Drehrichtung 23 des bogenführenden Zylinders 18 gesehen nach der Absaugeinrichtung 32 liegt. Überschüssiges Puder wird demnach vollständig von der Absaugeinrichtung 32 abgesaugt, wodurch verhindert wird, dass überschüssiges Puder die Umgebung der Bepuderungsvorrichtung 21 kontaminieren kann.By this intake of ambient air then adjusts an air flow, which is directed from the or each opening 39 to the suction device 32 and the air flow 34 counteracts in the region of the suction device 32. hereby can be reliably avoided that powder enters a portion of the sheet guiding device 22, which is seen in the direction of rotation 23 of the sheet-guiding cylinder 18 after the suction device 32. Excess powder is therefore completely exhausted by the suction device 32, which prevents excess powder from contaminating the surroundings of the powdering device 21.

Nach einer vorteilhaften Weiterbildung der Erfindung umfasst die Bepuderungsvorrichtung 21 eine weitere Blaseinrichtung 40, die an einer fünften Umfangsposition entlang der Bogenführungseinrichtung 22, die in Drehrichtung 23 des bogenführenden Zylinders 18 gesehen nach der dritten Umfangsposition und demnach nach der Absaugeinrichtung 32 liegt, positioniert ist.According to an advantageous development of the invention, the powdering device 21 comprises a further blowing device 40 which is positioned at a fifth circumferential position along the sheet guiding device 22, which is located in the direction of rotation 23 of the sheet-guiding cylinder 18 after the third circumferential position and therefore after the suction device 32.

Mithilfe dieser weiteren Blaseinrichtung 40, die getaktet betrieben wird, kann Blasluft in einen Kanal des bogenführenden Zylinders 18 zur Reinigung desselben gerichtet werden, nämlich dann, wenn an der weiteren Blaseinrichtung 40 kein Bogen vorbeigeführt wird. Beim Kanal, der mithilfe der Blaseinrichtung 40 gereinigt wird, handelt es sich vorzugsweise um einen Kanal, in dem Greifeinrichtungen für mithilfe des bogenführenden Zylinders 18 zu fördernde Bogen eingebracht sind. Diese Greifeinrichtungen erfassen Bogen an einer Vorderkante derselben.By means of this further blowing device 40, which is operated in a pulsed manner, blowing air can be directed into a channel of the sheet-guiding cylinder 18 for cleaning the same, namely when no sheet is guided past the further blowing device 40. The channel, which is cleaned by means of the blowing device 40, is preferably a channel in which gripping devices for sheets to be conveyed by means of the sheet-guiding cylinder 18 are introduced. These grippers detect arcs at a leading edge thereof.

Die Luftströmung 34 wird durch entsprechende Dimensionierung der Blasleistung der Blaseinrichtung 30 und der Saugleistung der Absaugeinrichtung 32 derart eingestellt, dass freie Hinterkanten der zu transportierenden Bogen an der Bogenführungseinrichtung 22 entlang gleiten.The air flow 34 is set by appropriate dimensioning of the blowing power of the blowing device 30 and the suction power of the suction device 32 such that free trailing edges of the sheets to be transported slide on the sheet guiding device 22 along.

Im Ausführungsbeispiel der Fig. 2 ist die fünfte Umfangsposition der Bogenführungseinrichtung 22, an welcher die weitere Blaseinrichtung 40 positioniert ist, zwischen der dritten Umfangsposition, an welcher die Absaugeinrichtung 32 positioniert ist, und der vierten Umfangsposition, an welcher die oder jede Öffnung ausgebildet ist, positioniert.In the embodiment of Fig. 2 the fifth circumferential position of the sheet guiding device 22 on which the further blowing device 40 is positioned is positioned between the third circumferential position at which the suction device 32 is positioned and the fourth circumferential position at which the or each aperture is formed.

Im Unterschied hierzu ist es jedoch auch möglich, dass die fünfte Umfangsposition, an welcher die weitere Blaseinrichtung 40 positioniert ist, in Drehrichtung 23 des bogenführenden Zylinders 18 gesehen nach der vierten Umfangsposition, an welcher die oder jede Öffnung 39 ausgebildet ist, liegt.In contrast, however, it is also possible that the fifth circumferential position at which the further blowing device 40 is positioned, seen in the direction of rotation 23 of the sheet-guiding cylinder 18 to the fourth circumferential position at which the or each opening 39 is formed, is located.

Im gezeigten Ausführungsbeispiel ist die Bepuderungsvorrichtung 21 zumindest teilweise gegenüber dem bogenführenden Zylinder 18 verlagerbar, nämlich schwenkbar und zwar um die in Fig. 2 gezeigte Achse 41. So sind gemäß Fig. 2 im bevorzugten Ausführungsbeispiel die Blaseinrichtung 30 sowie die Puderauftrageinrichtung 27 zusammen mit den entsprechenden Abschnitten 24 und 26 der Bogenführungseinrichtung 22 relativ zum bogenführenden Zylinder 18 schwenkbar. Fig. 2 zeigt die Blaseinrichtung 30 sowie die Puderauftrageinrichtung 27 in zwei unterschiedlichen Positionen, nämlich in einer an den bogenführenden Zylindern 18 angeschwenkten Arbeitsposition und in einer in Richtung des Pfeils 42 vom bogenführenden Zylinders 18 weggeschwenkten Wartungsposition, wobei in der Wartungsposition, in welcher die Blaseinrichtung mit 30' und die Puderauftrageinrichtung mit 27' beziffert ist, der Zugang zum bogenführenden Zylinder 18 zur Reinigung desselben erleichtert ist.In the illustrated embodiment, the powdering device 21 is at least partially displaceable relative to the sheet-guiding cylinder 18, namely, pivotable about the in Fig. 2 shown axis 41. So are according to Fig. 2 In the preferred embodiment, the blowing device 30 and the powder applicator 27 together with the corresponding sections 24 and 26 of the sheet guiding device 22 relative to the sheet-guiding cylinder 18 pivotally. Fig. 2 shows the blowing device 30 and the powder applicator 27 in two different positions, namely in a pivoted to the sheet-guiding cylinders 18 working position and in a direction of arrow 42 weggeschwenkten by the sheet-guiding cylinder maintenance position, wherein in the maintenance position in which the blowing device with 30 ' and the powder applicator is numbered 27 ', access to the sheet-guiding cylinder 18 for cleaning it is facilitated.

Im Unterschied zum gezeigten Ausführungsbeispiel ist es, abhängig von dem in der Bogendruckmaschine zur Verfügung stehenden Bauraum, auch möglich, die gesamte Bepuderungsvorrichtung 21 verlagerbar, insbesondere schwenkbar, auszugestalten. Auch ist es möglich, lediglich die Blaseinrichtung 30 zusammen mit dem vorderen Abschnitt 24 der Bogenführungseinrichtung 22 verlagerbar auszugestalten.In contrast to the embodiment shown, it is also possible, depending on the available space in the sheet printing machine space, the entire powdering device 21, in particular pivotable to design. It is also possible to make only the blowing device 30 displaceable together with the front section 24 of the sheet guiding device 22.

Nach einer vorteilhaften Weiterbildung der hier vorliegenden Erfindung kann in die Bogendruckmaschine 10 eine Zylinderreinigungseinrichtung für den bogenführenden Zylinder 18, dem die Bepuderungsvorrichtung 21 zugeordnet ist, integriert sein, wobei dann die in den Figuren nicht dargestellte Zylinderreinigungseinrichtung entlang eines anderen Umfangsabschnitts des Zylinders 18 wie die Bepuderungsvorrichtung 21 positioniert ist. So ist es zum Beispiel möglich, die Bepuderungsvorrichtung 21 und die nicht-gezeigte Zylinderreinigungseinrichtung etwa diametral gegenüberliegend am bogenführenden Zylinder 18 zu positionieren. Mithilfe einer solchen Zylinderreinigungseinrichtung kann zur Reinigung des bogenführenden Zylinders 18 Blasluft auf denselben gerichtet werden, um an der äußeren Umfangsfläche des Zylinders 18 anhaftendes Puder pneumatisch abzurakeln.According to an advantageous development of the present invention, a cylinder cleaning device for the sheet-guiding cylinder 18 to which the powdering device 21 is assigned may be integrated in the sheet-fed printing machine 10, in which case the cylinder cleaning device, not shown in the figures, along another peripheral section of the cylinder 18 as the powdering device 21 is positioned. For example, it is possible to use the powdering device 21 and the not-shown cylinder cleaning device approximately diametrically opposite to the sheet-guiding cylinder 18 to position. With the aid of such a cylinder cleaning device, blowing air can be directed onto the same to clean the sheet-guiding cylinder 18, in order to pneumatically abrade off powder adhering to the outer peripheral surface of the cylinder 18.

Wie bereits ausgeführt, ist die Bogenführungseinrichtung 22 im Wesentlichen geschlossen. Nur an den Positionen, an welchen über die Blaseinrichtung 30 Luft 31 auf zu bepudernden Bogen gerichtet werden soll und an welchen über die Puderdüsen 28 Puder auf die Bogen gerichtet werden soll und an welchen über die Absaugeinrichtung 32 das Gemisch 33 aus Luft und Puder abgesaugt werden soll, ist dieselbe geöffnet. Weitere Öffnungen können im Bereich der weiteren Blaseinrichtung 40 sowie der Öffnungen 39 zum Ansaugen von Umgebungsluft vorhanden sein. Insgesamt kann hierdurch gewährleistet werden, dass nahezu kein Puder die Umgebung der Bepuderungsvorrichtung 21 kontaminieren kann.As already stated, the sheet guiding device 22 is substantially closed. Only at the positions at which air is to be directed onto the sheet to be powdered via the blowing device 30 and at which powder is to be directed onto the sheets via the powder nozzles 28 and at which the mixture 33 of air and powder is sucked off via the suction device 32 should, it is open. Further openings may be present in the region of the further blowing device 40 and the openings 39 for drawing in ambient air. Overall, this ensures that virtually no powder can contaminate the surroundings of the powdering device 21.

Zum Absaugen des Gemischs 23 aus Luft und Puder im Bereich der Absaugeinrichtung 32 sind in die Bogenführungseinrichtung 22 im Bereich der Absaugeinrichtung 32 entsprechende Öffnungen derart eingebracht, dass das Absaugen des Gemisch 23 von den Bogen über die gesamte Axialerstreckung und Umfangserstreckung der Absaugeinrichtung 32 gleichmäßig und flächig erfolgt.For sucking off the mixture 23 of air and powder in the region of the suction device 32 corresponding openings are introduced into the sheet guiding device 22 in the region of the suction device 32 so that the suction of the mixture 23 of the arc over the entire axial extent and circumferential extent of the suction device 32 evenly and flat he follows.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
BogendruckmaschineSheetfed
1111
Druckwerksprinting unit
1212
Auslegerboom
1313
Formzylinderform cylinder
1414
Übertragungszylindertransfer cylinder
1515
Druckzylinderpressure cylinder
1616
Farbwerkinking
1717
Feuchtwerkdampening
1818
Transferzylindertransfer cylinder
1919
FördereinrichtungConveyor
2020
Auslegestapeldelivery pile
2121
Bepuderungsvorrichtungpowdering
2222
BogenführungseinrichtungSheet guiding device
2323
Drehrichtungdirection of rotation
2424
Abschnittsection
2525
Abschnittsection
2626
Abschnittsection
2727
PuderauftrageinrichtungPowder coating device
2828
PuderdüsePuderdüse
2929
Puderstrahlpowder jet
3030
Blaseinrichtungblower
3131
Luftair
3232
Absaugeinrichtungsuction
3333
Gemischmixture
3434
Luftströmungairflow
3535
Wandwall
3636
SeitenwandSide wall
3737
Dichtungselementsealing element
3838
Raumroom
3939
Öffnungopening
4040
Blaseinrichtungblower
4141
Gelenkjoint
4242
Pfeilarrow

Claims (17)

Bogenverarbeitungsmaschine, insbesondere Bogendruckmaschine, mit einer im Bereich eines bogenführenden Zylinders angeordneten Bepuderungsvorrichtung zum Auftragen von Puder auf verarbeitete Bogen oder zu verarbeitende Bogen, dadurch gekennzeichnet, dass a) die Bepuderungsvorrichtung (21) eine Bogenführungseinrichtung (22) aufweist, die sich entlang eines Umfangsabschnitts des bogenführenden Zylinders (18) erstreckt; b) die Bepuderungsvorrichtung (21) eine Puderauftrageinrichtung (27) aufweist, die an einer ersten Umfangsposition entlang der Bogenführungseinrichtung (22) positioniert ist, wobei mit Hilfe der Puderauftragseinrichtung (27) Puder auf die Bogen richtbar ist; c) die Bepuderungsvorrichtung (21) eine Blaseinrichtung (30) aufweist, die an einer zweiten Umfangsposition entlang der Bogenführungseinrichtung (22), die in Drehrichtung des bogenführenden Zylinders (18) gesehen vor der ersten Umfangsposition liegt, positioniert ist, wobei mit Hilfe der Blaseinrichtung (30) Luft auf die Bogen richtbar ist; d) die Bepuderungsvorrichtung (21) eine Absaugeinrichtung (32) aufweist, die an einer dritten Umfangsposition entlang der Bogenführungseinrichtung (22), die in Drehrichtung des bogenführenden Zylinders (18) gesehen nach der ersten Umfangsposition liegt, positioniert ist, wobei mit Hilfe der Absaugeinrichtung (32) Luft und Puder absaugbar ist; e) die Bogenführungseinrichtung (22) im Wesentlichen geschlossen ist, sodass sich zwischen der Blaseinrichtung (30) und der Absaugeinrichtung (32) eine definierte Luftströmung zur Führung der Bogen insbesondere im Bereich der Puderauftrageinrichtung (27) ausbildet. Sheet processing machine, particularly sheet printing press, with a arranged in the region of a sheet-conveying cylinder powdering apparatus for applying powder to the processed sheet to be processed or sheet, characterized in that a) the powdering device (21) has a sheet guiding device (22) which extends along a peripheral portion of the sheet-guiding cylinder (18); b) the powdering device (21) comprises a powder application device (27) which is positioned at a first circumferential position along the sheet guiding device (22), wherein powder can be directed onto the sheets with the aid of the powder application device (27); c) the powdering device (21) has a blowing device (30) which is positioned at a second circumferential position along the sheet guiding device (22), which is located in the direction of rotation of the sheet-guiding cylinder (18) in front of the first circumferential position, wherein with the aid of the blowing device (30) air can be directed to the arch; d) the powdering device (21) comprises a suction device (32) which is positioned at a third circumferential position along the sheet guiding device (22), which is in the direction of rotation of the sheet-guiding cylinder (18) after the first circumferential position, wherein by means of the suction device (32) air and powder are extractable; e) the sheet guiding device (22) is substantially closed, so that a defined air flow for guiding the sheet, in particular in the area of the powder application device (27), is formed between the blowing device (30) and the suction device (32). Bogenverarbeitungsmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Bogenführungseinrichtung (22) in Umfangrichtung im Wesentlichen geschlossen ist.Sheet processing machine according to claim 1, characterized in that the sheet guiding device (22) is substantially closed in the circumferential direction. Bogenverarbeitungsmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Bogenführungseinrichtung (22) an einer sich in Umfangrichtung und in Axialrichtung erstreckenden Wand (35) im Wesentlichen geschlossen ist.Sheet processing machine according to claim 1 or 2, characterized in that the sheet guiding device (22) is substantially closed in a circumferential direction and in the axial direction extending wall (35). Bogenverarbeitungsmaschine nach Anspruch 3, dadurch gekennzeichnet, dass die Bogenführungseinrichtung (22) weiterhin an sich in Umfangrichtung und in Radialrichtung erstreckenden Seitenwänden (36) im Wesentlichen geschlossen ist.Sheet processing machine according to claim 3, characterized in that the sheet guiding device (22) is further substantially closed in circumferentially and in the radial direction extending side walls (36). Bogenverarbeitungsmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Bogenführungseinrichtung (22) an einem in Drehrichtung des bogenführenden Zylinders (18) gesehen vorderen Abschnitt (24), an welchem die Blaseinrichtung (30) positioniert ist, derart ausgebildet ist, dass sich der Abstand der Bogenführungseinrichtung (22) vom bogenführenden Zylinder (18) in Drehrichtung desselben verringert.Sheet processing machine according to one of claims 1 to 4, characterized in that the sheet guiding device (22) on a in the direction of rotation of the sheet-guiding cylinder (18) seen front portion (24) on which the blowing device (30) is positioned, is formed such that the distance of the sheet guiding device (22) from the sheet-guiding cylinder (18) in the same direction of rotation is reduced. Bogenverarbeitungsmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Bogenführungseinrichtung (22) an einem in Drehrichtung des bogenführenden Zylinders (18) gesehen hinteren Abschnitt (25), an welchem die Absaugeinrichtung (32) positioniert ist, derart ausgebildet ist, dass der Abstand der Bogenführungseinrichtung (22) vom bogenführenden Zylinder (18) in etwa konstant ist.Sheet processing machine according to one of claims 1 to 5, characterized in that the sheet guiding device (22) on a in the direction of rotation of the sheet-guiding cylinder (18) seen rear portion (25) on which the suction device (32) is positioned, is formed such that the distance of the sheet guiding device (22) from the sheet-guiding cylinder (18) is approximately constant. Bogenverarbeitungsmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Bogenführungseinrichtung (22) an einem in Drehrichtung des bogenführenden Zylinders (18) gesehen mittleren Abschnitt (26), an welchem die Puderauftrageinrichtung (27) positioniert ist, einen Abstand aufweist der größer ist als an in Drehrichtung des Zylinders (18) gesehen vor und hinter dem mittleren Abschnitt (26) liegenden Abschnitten (24, 25).Sheet processing machine according to one of claims 1 to 6, characterized in that the sheet guiding device (22) on a in the direction of rotation of the sheet-guiding cylinder (18) seen middle portion (26) on which the powder applicator (27) is positioned, a distance greater is as seen in the direction of rotation of the cylinder (18) before and behind the central portion (26) lying portions (24, 25). Bogenverarbeitungsmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass in die Bogenführungseinrichtung (22) an einer vierten Umfangsposition derselben, die in Drehrichtung des bogenführenden Zylinders (18) gesehen nach der dritten Umfangsposition liegt, mindestens ein Öffnung (39) zur Ansaugung von Umgebungsluft eingebracht ist.Sheet processing machine according to one of claims 1 to 7, characterized in that in the sheet guiding device (22) at a fourth circumferential position thereof, which is in the direction of rotation of the sheet-guiding cylinder (18) after the third circumferential position, at least one opening (39) for the suction of Ambient air is introduced. Bogenverarbeitungsmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Bepuderungsvorrichtung (22) eine weitere Blaseinrichtung (40) aufweist, die an einer fünften Umfangsposition entlang der Bogenführungseinrichtung (22), die in Drehrichtung des bogenführenden Zylinders (18) gesehen nach der dritten Umfangsposition liegt, positioniert ist, wobei mit Hilfe der weiteren Blaseinrichtung (40) Luft in einen Kanal des bogenführenden Zylinders zur Reinigung desselben richtbar.Sheet processing machine according to one of claims 1 to 8, characterized in that the powdering device (22) comprises a further blowing device (40) at a fifth circumferential position along the sheet guiding device (22) in the direction of rotation of the sheet-guiding cylinder (18) after the third circumferential position is positioned, with the aid of the further blowing device (40) air in a channel of the sheet-guiding cylinder for cleaning the same richtbar. Bogenverarbeitungsmaschine nach Anspruch 9, dadurch gekennzeichnet, dass die fünfte Umfangsposition in Drehrichtung des bogenführenden Zylinders (18) gesehen nach der vierten Umfangsposition liegt.Sheet processing machine according to claim 9, characterized in that the fifth circumferential position in the direction of rotation of the sheet-guiding cylinder (18) is located after the fourth circumferential position. Bogenverarbeitungsmaschine nach Anspruch 9, dadurch gekennzeichnet, dass die fünfte Umfangsposition in Drehrichtung des bogenführenden Zylinders (18) gesehen vor der vierten Umfangsposition liegt.Sheet processing machine according to claim 9, characterized in that the fifth circumferential position in the direction of rotation of the sheet-guiding cylinder (18) is located in front of the fourth circumferential position. Bogenverarbeitungsmaschine nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die die Bepuderungsvorrichtung (21) zumindest teilweise gegenüber dem bogenführenden Zylinder (18) verlagerbar, insbesondere schwenkbar, ist.Sheet processing machine according to one of claims 1 to 11, characterized in that the powdering device (21) is at least partially displaceable relative to the sheet-guiding cylinder (18), in particular pivotable. Bogenverarbeitungsmaschine nach Anspruch 12, dadurch gekennzeichnet, dass zumindest ein in Drehrichtung des bogenführenden Zylinders (18) gesehen vorderer Abschnitt (24) der Bogenführungseinrichtung (22), an welchem die Blaseinrichtung (30) positioniert ist, zusammen mit der Blaseinrichtung (30) gegenüber dem bogenführenden Zylinder (18) verlagerbar ist.Sheet processing machine according to claim 12, characterized in that at least one in the direction of rotation of the sheet-guiding cylinder (18) seen front portion (24) of the sheet guiding device (22) on which the blowing device (30) is positioned, together with the blowing device (30) relative to the sheet-guiding cylinder (18) is displaceable. Bogenverarbeitungsmaschine nach Anspruch 13, dadurch gekennzeichnet, dass auch ein mittlerer Abschnitt (26) der Bogenführungseinrichtung (22), an welchem die Puderauftrageinrichtung (27) positioniert ist, zusammen mit der Puderauftrageinrichtung (27) gegenüber dem bogenführenden Zylinder (18) verlagerbar ist.Sheet-processing machine according to claim 13, characterized in that also a central portion (26) of the sheet guiding device (22) on which the powder applicator (27) is positioned, together with the powder applicator (27) relative to the sheet-guiding cylinder (18) is displaceable. Bogenverarbeitungsmaschine nach einem der Ansprüche 1 bis 14, gekennzeichnet durch eine Zylinderreinigungseinrichtung, die entlang eines anderen Umfangsabschnitts des bogenführenden Zylinders (18) wie die Bepuderungsvorrichtung (21) positioniert ist, wobei mit Hilfe der Zylinderreinigungseinrichtung zur Reinigung des bogenführenden Zylinders (18) Blasluft auf denselben richtbar ist.A sheet processing machine according to any one of claims 1 to 14, characterized by a cylinder cleaning means positioned along another peripheral portion of the sheet guiding cylinder (18) like the powdering device (21), blowing air thereon by means of the cylinder cleaning means for cleaning the sheet conveying cylinder (18) is correctable. Verfahren zum Auftragen von Puder auf verarbeitete Bogen oder zu verarbeitende Bogen, mit zumindest den folgenden Schritten: a) zu bepudernde Bogen werden mit Hilfe einer Bogenführungseinrichtung entlang eines bogenführenden Zylinders bewegt; b) auf die zu bepudernden Bogen wird im Bereich des bogenführenden Zylinders ein Puderstrahl gerichtet; c) in Drehrichtung des bogenführenden Zylinders gesehen vor dem Puderstahl wird Blasluft auf die zu bepudernden Bogen gerichtet; d) in Drehrichtung des bogenführenden Zylinders gesehen nach dem Puderstahl wird Luft und Puder von den die zu bepudernden Bogen abgesaugt; e) zwischen der Bogenführungseinrichtung und dem bogenführenden Zylinder wird eine definierte Luftströmung zur Führung der Bogen insbesondere im Bereich des Puderstrahls ausbildet. Process for applying powder to processed sheets or sheets to be processed, comprising at least the following steps: a) to be powdered sheets are moved by means of a sheet guiding device along a sheet-guiding cylinder; b) a powder jet is directed onto the sheets to be powdered in the area of the sheet-guiding cylinder; c) viewed in the direction of rotation of the sheet-guiding cylinder in front of the powder steel blowing air is directed to the sheets to be powdered; d) seen in the direction of rotation of the sheet-guiding cylinder after the powder steel air and powder is sucked from the sheets to be powdered; e) between the sheet guiding device and the sheet-guiding cylinder, a defined air flow for guiding the sheet is formed, in particular in the region of the powder jet. Verfahren nach Anspruch 16, gekennzeichnet durch Merkmale nach einem oder mehreren der Ansprüche 1 bis 15.A method according to claim 16, characterized by features according to one or more of claims 1 to 15.
EP10154981A 2009-03-12 2010-03-01 Sheet-fed treating machine Active EP2228215B1 (en)

Applications Claiming Priority (1)

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DE102009001510A DE102009001510A1 (en) 2009-03-12 2009-03-12 Sheet processing machine

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DE102012104137A1 (en) 2012-05-11 2013-11-14 Maschinenfabrik Reinhausen Gmbh Field controlled composite insulator e.g. rod, has core, shielding sheath and field control layer that is applied by plasma coating to core, where dielectric properties are controlled by geometric structure of field-control layer

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DE19707157A1 (en) * 1997-02-22 1998-08-27 Weitmann & Konrad Fa Device to dust flat moving products with powder e.g. for preventing colour mix freshly-printed paper
EP0886579B1 (en) 1996-03-11 2001-05-16 PLATSCH, Hans G. Device for dusting printed products
EP0886729B1 (en) 1996-03-12 2003-09-17 Ahmad-Maher Moubayed Peristaltic pump with pinch fingers for providing complete occlusion
EP1375144A2 (en) * 2002-06-19 2004-01-02 Koenig & Bauer Aktiengesellschaft Device for powdering sheets in a printing machine

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US3053180A (en) * 1960-03-17 1962-09-11 Donald J Doyle Anti-offset powder spray and cleaner system
DE10256320A1 (en) * 2002-11-28 2004-06-09 Weitmann & Konrad Gmbh & Co Kg Device for dusting printed sheets

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US5443005A (en) * 1992-03-06 1995-08-22 Platsch; Hans G. Dusting device
EP0886579B1 (en) 1996-03-11 2001-05-16 PLATSCH, Hans G. Device for dusting printed products
EP0886729B1 (en) 1996-03-12 2003-09-17 Ahmad-Maher Moubayed Peristaltic pump with pinch fingers for providing complete occlusion
EP0847856A2 (en) * 1996-12-10 1998-06-17 Heidelberger Druckmaschinen Aktiengesellschaft Powdering device for sheets
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EP1375144A2 (en) * 2002-06-19 2004-01-02 Koenig & Bauer Aktiengesellschaft Device for powdering sheets in a printing machine

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DE102009001510A1 (en) 2010-09-16
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