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EP0847856A2 - Dispositif pour saupoudrer des feuilles - Google Patents

Dispositif pour saupoudrer des feuilles Download PDF

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Publication number
EP0847856A2
EP0847856A2 EP97121280A EP97121280A EP0847856A2 EP 0847856 A2 EP0847856 A2 EP 0847856A2 EP 97121280 A EP97121280 A EP 97121280A EP 97121280 A EP97121280 A EP 97121280A EP 0847856 A2 EP0847856 A2 EP 0847856A2
Authority
EP
European Patent Office
Prior art keywords
powder gas
powder
sheet
openings
conveying direction
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.)
Withdrawn
Application number
EP97121280A
Other languages
German (de)
English (en)
Other versions
EP0847856A3 (fr
Inventor
Hans G. Platsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19751972A external-priority patent/DE19751972A1/de
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0847856A2 publication Critical patent/EP0847856A2/fr
Publication of EP0847856A3 publication Critical patent/EP0847856A3/fr
Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed

Definitions

  • the invention relates to a device for pollination of sheets, the one Printing machine in succession in a conveying direction along a conveying path run through and after pollination are summarized such that a Back of a following sheet of a front of each opposite sheet in a stack, by means of one on the Conveyor line aligned powder gas curtain, which is formed by means of a Powder gas in the form of a powder particle with leading carrier gas, as well as a thus equipped delivery of a sheet-processing printing machine.
  • Known devices for dusting sheets have a powder gas dispenser which one is directed towards the top of the arch Powder gas curtain generated. In the case of sheets printed on one side, this upper side is the one Face side.
  • the powder gas is the powder gas delivery device by a Powder gas generator provided, which distributes powder particles in a carrier gas stream. By Dusting the bow is prevented from being incomplete Bake cured coating with ink or varnish when it is on stacked one on top of the other.
  • the powder gas dispenser In the known devices, the powder gas dispenser must be under a relatively large distance from the conveying path of the sheets are arranged so that Sheet moving grippers freely between the sheet and the powder gas dispenser can walk through. For this reason the powder transfer is on the sheets are not always satisfactory.
  • the invention has for its object the device mentioned above to design that a more effective powder transfer to the sheet is obtained.
  • this object is achieved by a device having the device described in claim 1 specified features.
  • the Powder gas delivery takes place closer to the conveying path of the bows because the bows moving grippers extend only slightly under the back of the sheet.
  • the separation function of the powder particles in the stack get, since it is only important for this separation function that the powder particles on the There is a separating surface between sheets lying one above the other. Whether they're in this interface from the top of a sheet below or from the bottom of a sheet above horizontal arch is only of secondary interest.
  • the device according to the invention can also be used together with the Top of the bow pollinating conventional pollinator used will.
  • the development of the invention according to claim 5 has the advantage that the Sheet guiding device also in a region emitting the powder gas thereof Sheet guiding function and that the sheet coated evenly with powder particles that there are no powder-free stripes.
  • the development according to claim 6 enables a particularly efficient production of a the sheet guiding sheet forming the sheet guiding surface of the sheet guiding device.
  • the development of the invention according to claim 9 is in terms of good powdering the lateral edge areas of the sheet is advantageous without the need for the Provide powder gas discharge nozzles up to the edges of the sheet guiding device.
  • a powder gas dispensing nozzle has a transversely inclined bottom wall, then it can a powder gas jet bundle which is oblique to the conveying direction is produced in a simple manner will.
  • the development of the invention according to claim 12 is also homogeneous Powdering is an advantage.
  • the powder gas is added to the sliding air possible with a particularly simple construction.
  • FIG. 1 are side walls 10 of an end portion of a multicolor printing machine indicated. There are pairs of these spaced perpendicular to the plane of the drawing Sprockets 12, 14 are mounted, each of which has a rotating conveyor chain 16. At this are gripping units 18 shown at roughly schematic intervals attached, the perpendicular to the plane of the conveyor chains 16th have carried gripper bridges 19 (see FIG. 3) and grippers 20 carried by them.
  • the grippers 20 take over during the circulation of the conveyor chains 16 in the by means of Arrow 11 indicated the direction of the sheet 22 from a last sheet leading Cylinder 13 of the printing press and convey the sheets 22 along one in the essentially up to the chain wheels 14 extending conveyor line to a stacking station 15, in order to pass them here to a sheet brake 17 which uses the decelerated sheet 22 finally releases to form a stack 21.
  • the course of the conveyor line is determined by that of the lower runs of the conveyor chains 16.
  • the section extending approximately from the cylinder 13 to the sheet brake 17 The conveying path is assigned a sheet guiding device 24 following its course, the one Forms sheet guide surface 25.
  • a nozzle bar 26 is integrated into the sheet guiding device 24. This does not include a plurality of successive ones perpendicular to the plane of the drawing powder gas discharge nozzles, which together form one against the back of the Generate arc directed powder gas curtain 28, so that a total of one Powder gas for forming the powder gas curtain 28, sheet guiding device 24 is present.
  • Powder gas a carrier gas
  • powder gas generator 30 which mixes powder particles, for example small-diameter maize particles, in the concentration required in each case with a carrier gas stream.
  • the nozzle bar 26 can be in close proximity to the conveying path of the sheets can be arranged on or at a short distance from the sheet guide surface 25 of the Sheet guiding device 24 extends.
  • dust the top with a nozzle bar the arc, the distance between this and the nozzle bar is significantly larger, since the Gripping units 18 must move freely under the nozzle bar.
  • nozzle bar 26 is integrated in the sheet guiding device 24 also results a constant and precise positioning of the Back of the sheet 22 with respect to the nozzle bar 26, which affects the uniformity of the Pollination is beneficial.
  • the sheet guiding device 24 shown in FIG. 1 primarily acts mechanically with the Back of the sheet 22 together, however, due to the conveying speed the arch between them and the arch guide surface 25 forms a certain air film.
  • the sheet guiding device 24 is preferably designed as an air cushion guiding element, as in FIG Figure 2 shown.
  • a is distributed over the sheet guide surface 25
  • a plurality of sliding air discharge nozzles 32 arranged in rows are provided. These are each connected to a transverse distribution channel 34, the two ends of which a symmetrical flow divider 36 with a sliding air feed line 38 are connected. This in turn is via an adjustable throttle 40 with the output a blower 42 connected.
  • the sliding air discharge nozzles are 32 of successive rows in the conveying direction by one half division laterally offset from each other, so that a total of one in transverse direction uniform support of the arch 22 is obtained.
  • the sliding air discharge nozzles 32 have the shape of sectors in the plan view according to FIG. 2, and each have an inclined bottom wall 44 which widen from the same the interior of a sliding air nozzle chamber 35 rises towards the sheet guide surface 25 (see Fig. 4). Accordingly, the sliding air discharge nozzles 32 have triangular sides Boundary walls 46.
  • a row of powder gas discharge nozzles 48 provided that oriented essentially in the conveying direction of the sheet 22 Powder gas jets 49 emitted at each end of the row are inclined laterally outwards with respect to the conveying direction.
  • the powder gas discharge nozzles 48 have a respective inclined, sector-shaped Bottom wall 50 and side boundary walls 52 one to the sliding air discharge nozzles 32 analog geometry, so that with broadly protruding powder gas bundles 49 a very uniform pollination can be achieved.
  • the powder gas discharge nozzles 48 are at one transverse distribution channel 54 in connection, the ends of which via a symmetrical Current dividers 56 are connected to the output of a mixing device 58.
  • the one The input of the mixing device 58 is connected to the output of the powder gas generator 30 connected, the second input of the mixing device 58 is via an adjustable throttle 60 connected to the outlet of the fan 42.
  • the powder gas discharge nozzles 48 deliver a powder quantity which is at Powder gas generator 30 is set, and at the same time a total amount of air through Setting the throttle 60 can be specified. Overall, this ensures that the Powder gas discharge nozzles 48 as well as the sliding air discharge nozzles 32 to form the Air cushion contribute, but at the same time also by means of the powder gas discharge nozzles 48 Powder particles are applied to the back of the sheet 22.
  • the bottom wall 50 of the powder gas discharge nozzles 48 has one downwardly bent section, which represents a baffle element 62. This lies opposite a mouth 65 of a powder gas pipe 64, which from the distribution channel 54 ins Leads inside a powder gas nozzle chamber 66 surrounding the powder gas discharge nozzle 48, which on the underside of a sheet guide plate 27 forming the sheet guide surface 25 (in a stainless steel sheet) is arranged.
  • a powder gas pipe 64 which from the distribution channel 54 ins Leads inside a powder gas nozzle chamber 66 surrounding the powder gas discharge nozzle 48, which on the underside of a sheet guide plate 27 forming the sheet guide surface 25 (in a stainless steel sheet) is arranged.
  • the powder gas discharge nozzles are 48 preferably supplied with additional air.
  • a sliding air discharge pipe opening into the powder gas nozzle chamber 66 82 are provided.
  • the application of the back of the Sheets 22 with powder gas also take place through a transversely arranged nozzle bar 84, 4 is surrounded by a shaft 86.
  • This one has to the back of the Output opening 88 pointing towards sheet 22, which extends over the width of printing sheet 22 extends.
  • the outlet opening 88 is covered by a grating 90, which is in a corresponding recess 89 of the sheet guide plate 27 is inserted and from a A plurality of lattice bars 92 inclined with respect to the conveying direction of the printed sheets 22, such as shown in Figure 5.
  • the ends of the bars 92 just overlap in Conveying direction of the sheet 22 perpendicular direction and in this way represent a mechanical continuation of the sheet guide surface 25 in the area of the exit opening 88, but at the same time allow homogeneous dusting of the back of the sheets 22.
  • FIG. 6 there is a Sheet guide surface 25 forming sheet guide plate 27, a sliding air box 94 arranged, and are regularly distributed in the sheet guide plate 27 within the edge contour of the latter Sliding air openings 96 are provided.
  • alternating successive powder gas discharge openings 98 and suction openings 100 are provided in a downstream section of the sheet guide device 24 .
  • the powder gas discharge openings 98 on the one hand and the Suction openings 100 each have comb-like distributor units 106 or 108 with a transversely arranged comb back, the Powder gas discharge openings 98 and suction openings 100 each on comb teeth 102 and 104 are arranged, of which those of the one in the gaps between those the other of the two distribution units 106 and 108 intervene.
  • the side ends of the Comb ridges are each connected to the via symmetrical current dividers 110, 112 Powder gas generator 30 or the suction side of a blower 114 connected.
  • the suction openings 100 and the powder gas discharge openings are 98 in several consecutive in the conveying direction and to this vertical rows (here three). However, the suction openings 100 are total offset by a division downstream from the powder gas discharge openings 98, see that the local flows from the powder gas discharge openings 98 to the suction openings 100 in addition to a predominantly transverse component, one parallel to the conveying direction the arc 22 have aligned component.
  • the sheet guiding device 24 has a multiplicity of Openings 122, which at the same time produce an air cushion and powder the Back of the sheet 22 serve.
  • the openings 122 communicate with one Distribution box 124, which communicates with a feed shaft 126.
  • a feed shaft 126 In this is a plurality of fans 128 successively perpendicular to the plane of the drawing arranged which a sliding air stream emerging from the openings 122 for Generation of an air cushion between the sheet guide surface 25 and a respective one of the Deliver sheet 22.
  • Downstream from a respective fan 128 is everyone associated with the latter a nozzle 130 which crosses the flow of sliding air Dispenses powder gas cone 132 into the feed shaft 126.
  • the opening angle of the In practice, powder gas cone 132 is between 40 ° and 80 °, preferably about 60 °.
  • the nozzles 130 are connected to the output of the powder gas generator 30.
  • Electrode 136 In order to transfer the powder gas to the back of the printed sheets 22 too favor, is at the end of the feed shaft 126 facing the distribution box 124 a net-shaped one at these via insulating pieces not shown in the drawing Electrode 136 attached, which is connected to a high voltage source 138 and Powder particles are charged electrically so that when they hit the back of the Adhere sheet 22 well to it.
  • FIGS. 8 and 9 show a powder gas trap 140 in the form of a doctor blade arrangement, by means of which powder gas containing residual powder in a compared to the powder gas curtain 28th downstream area of the sheet guide device 24 can be suctioned off.
  • the doctor blade arrangement has two doctor arms 142, 144 which together represent a V, whereby the V opens in the conveying direction of the sheet 22.
  • the Squeegee arms 142, 144 each have an oblique upward to a base plate 146 running thin baffles 148. These are in a V forming the recess of the Base plate 146 inserted and at their upper ends by a thin face plate 150th connected, which is flush with the sheet guide surface 25.
  • Below the baffles 148 there are disposal openings 152 in each case, which have manifolds 154 with the suction side a fan not shown in Figure 8 are connected.
  • the supply openings 156 are designed so that fresh air jets emerging from them with the plane of the base plate 146 an angle of z. B. include 60 degrees so that on the one hand in the area of the doctor arms 142, 144 an overall essentially constant air cushion support of the bow is obtained, but on the other hand the fresh air supplied already with a parallel to the conveying direction of the sheet Speed components is delivered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Nozzles (AREA)
  • Coating Apparatus (AREA)
  • Printing Methods (AREA)
EP97121280A 1996-12-10 1997-12-04 Dispositif pour saupoudrer des feuilles Withdrawn EP0847856A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19651302 1996-12-10
DE19651302 1996-12-10
DE19751972 1997-11-25
DE19751972A DE19751972A1 (de) 1996-12-10 1997-11-25 Vorrichtung zur Bestäubung von Bogen

Publications (2)

Publication Number Publication Date
EP0847856A2 true EP0847856A2 (fr) 1998-06-17
EP0847856A3 EP0847856A3 (fr) 1998-12-30

Family

ID=26032066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121280A Withdrawn EP0847856A3 (fr) 1996-12-10 1997-12-04 Dispositif pour saupoudrer des feuilles

Country Status (3)

Country Link
US (1) US6038998A (fr)
EP (1) EP0847856A3 (fr)
JP (1) JPH10193567A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0947321A1 (fr) * 1998-03-24 1999-10-06 MAN Roland Druckmaschinen AG Poudreur dans une machine d'impression
EP2228215A1 (fr) * 2009-03-12 2010-09-15 manroland AG Machine de traitement de feuilles

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10010970A1 (de) * 1999-03-26 2000-10-12 Heidelberger Druckmasch Ag Saugbandförderer für eine Bogen verarbeitende Maschine
DE10038774A1 (de) 2000-06-09 2001-12-13 Heidelberger Druckmasch Ag Vorrichtung zur Erzeugung eines Luftstromes in einer Vervielfältigungsmaschine
DE10133633A1 (de) * 2000-08-31 2002-03-14 Heidelberger Druckmasch Ag Leit-und Tragelemente mit gedrosselter Blasluft
US6801746B2 (en) * 2001-08-08 2004-10-05 Eastman Kodak Company Method and system for reducing toner rub-off in an electrophotographic apparatus by using printers' anti-offset spray powder
JP4954439B2 (ja) * 2002-10-21 2012-06-13 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 空気圧式の枚葉紙案内装置を備える枚葉紙処理機械
DE10347526B4 (de) * 2002-11-11 2016-10-27 Heidelberger Druckmaschinen Ag Bogen verarbeitende Rotationsdruckmaschine mit einer zusammengesetzten Bogenleitvorrichtung
US20050045055A1 (en) * 2003-08-28 2005-03-03 Daniel Gelbart Security printing method
JP2005088320A (ja) * 2003-09-17 2005-04-07 Komori Corp 印刷機の集塵装置
DE102007046651A1 (de) * 2007-09-28 2009-04-02 Heidelberger Druckmaschinen Ag Pudervorrichtung
WO2011030644A1 (fr) * 2009-09-14 2011-03-17 株式会社コスモテック Dispositif de dispersion de poudre pour impression
CN107206782A (zh) * 2015-04-30 2017-09-26 惠普发展公司，有限责任合伙企业 用于打印介质的干燥器
EP3965567B1 (fr) 2019-05-07 2023-07-05 Syddansk Universitet Mécanisme de distribution d'un matériau biologique

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DE2552998C2 (de) * 1975-11-26 1983-11-10 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenausleger für Rotationsdruckmaschinen
DE2846643C2 (de) * 1978-01-25 1984-12-06 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Bogenleiteinrichtung in Bogenauslegern von Druckmaschinen

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US3167012A (en) * 1961-12-01 1965-01-26 Miehle Goss Dexter Inc Sheet control and spray collection chamber
US3556519A (en) * 1967-06-23 1971-01-19 Leo Keller Method and apparatus for stacking paper sheets or the like
DE2207983C3 (de) * 1972-02-21 1980-05-29 Albin Platsch Zerstaeubungstechnik, 7000 Stuttgart Vorrichtung zur Puderbestäubung
DE2936754A1 (de) * 1979-09-12 1981-04-02 Weitmann & Konrad GmbH & Co KG, 7023 Echterdingen Vorrichtung zum elektrostatischen auftragen von in einem gasstrom mitgefuehrten materialteilchen auf eine vorlaufende, flaechige unterlage
DE3135220A1 (de) * 1981-09-05 1983-03-17 Weitmann & Konrad GmbH & Co KG, 7022 Leinfelden-Echterdingen Vorrichtung zum aufbringen von puderteilchen
DE3217779A1 (de) * 1982-05-12 1983-11-17 Weitmann & Konrad GmbH & Co KG, 7022 Leinfelden-Echterdingen Vorrichtung zur steuerung des puderbestaeubers in einer druckmaschine
DE3330665A1 (de) * 1983-08-25 1985-03-14 Weitmann & Konrad GmbH & Co KG, 7022 Leinfelden-Echterdingen Vorrichtung zum bestaeuben bewegter gegenstaende, insbesondere flaechiger unterlagen
DE3818643C3 (de) * 1988-06-01 1995-05-04 Deutsche Forsch Luft Raumfahrt Aerosolgenerator zur kontinuierlichen Erzeugung eines massenstrom- oder volumenstromkonstanten Luft/Feststoff-Teilchenstroms, insbesondere zum Impfen von Luftströmungen
DE3819203A1 (de) * 1988-06-06 1989-12-07 Klaschka Ind Elektronik Bestaeubungsgeraet
DE4110127A1 (de) * 1991-03-27 1992-10-01 Herbert Huettlin Duesenbaugruppe zum verspruehen von fluessigkeiten
DE4207118C2 (de) * 1992-03-06 2001-05-10 Hans G Platsch Bestäubungsgerät
DE4341566B4 (de) * 1993-12-07 2005-03-10 Heidelberger Druckmasch Ag Trennmittelschichten zum Oberflächenschutz frisch bedruckter Bogen und Vorrichtung zum Beschichten der frisch bedruckten Bogen mit der Trennmittelschicht
US5447565A (en) * 1993-12-10 1995-09-05 Wm. Wrigley Jr. Company Apparatus and method for coating particles
DE4406848C2 (de) * 1994-03-03 1997-11-06 Koenig & Bauer Albert Ag Blaskasten zum schwebenden Führen von Bogen oder Bahnen
DE4427904A1 (de) * 1994-08-06 1996-02-08 Hans Platsch Puderbestäubungsgerät
DE4445457A1 (de) * 1994-12-20 1996-07-04 Heidelberger Druckmasch Ag Verfahren zum Aufbringen eines Abstandstoffes auf einen Druckbogen und zur Durchführung des Verfahrens ausgerüstete Bogendruckmaschine
US5634401A (en) * 1995-04-25 1997-06-03 Electric City Printing Company Printing press powder removal system
US5746131A (en) * 1995-11-02 1998-05-05 Heidelberger Druckmaschinen Ag Powder sprayer
DE19632899A1 (de) * 1996-08-16 1998-02-19 Weitmann & Konrad Fa Vorrichtung zum Bestäuben bewegter Gegenstände, insbesondere bedruckter Papierbögen
DE19635830A1 (de) * 1996-09-04 1998-03-05 Weitmann & Konrad Fa Vorrichtung und Verfahren zum Bestäuben bahn- oder blattförmiger Produkte

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552998C2 (de) * 1975-11-26 1983-11-10 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenausleger für Rotationsdruckmaschinen
DE2846643C2 (de) * 1978-01-25 1984-12-06 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Bogenleiteinrichtung in Bogenauslegern von Druckmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0947321A1 (fr) * 1998-03-24 1999-10-06 MAN Roland Druckmaschinen AG Poudreur dans une machine d'impression
EP2228215A1 (fr) * 2009-03-12 2010-09-15 manroland AG Machine de traitement de feuilles

Also Published As

Publication number Publication date
JPH10193567A (ja) 1998-07-28
EP0847856A3 (fr) 1998-12-30
US6038998A (en) 2000-03-21

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