EP0844081A1 - Méthode et dispositif pour saupoudrer des produits, en particulier des produits imprimés - Google Patents

Méthode et dispositif pour saupoudrer des produits, en particulier des produits imprimés Download PDF

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Publication number
EP0844081A1
EP0844081A1 EP97116338A EP97116338A EP0844081A1 EP 0844081 A1 EP0844081 A1 EP 0844081A1 EP 97116338 A EP97116338 A EP 97116338A EP 97116338 A EP97116338 A EP 97116338A EP 0844081 A1 EP0844081 A1 EP 0844081A1
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EP
European Patent Office
Prior art keywords
products
powder
gas
suction
transport gas
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
EP97116338A
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German (de)
English (en)
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EP0844081B1 (fr
Inventor
Hans G. Platsch
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Individual
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Individual
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Publication of EP0844081A1 publication Critical patent/EP0844081A1/fr
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Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0075—Nozzle arrangements in gas streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/06—Powdering devices, e.g. for preventing set-off

Definitions

  • the invention relates to a method for dusting Products, especially printed products, according to the generic term of claim 1 and a device for performing such a method according to the preamble of claim 10.
  • the products are not rigid Products, e.g. Print sheets, so generate from the dispensing nozzles emitted powder gas jets a transverse channel in the product. This is with a view to flutter-free Adverse of the products. Through the sharp pressing of the powder gas jets to the surface of the pollinating products also get unstable flow conditions.
  • Another disadvantage of the known arrangement is that the reflected air jets are one larger subset of the powder from the surface of the to carry away pollinating products.
  • a method and specified a device for dusting products which have a better transfer efficiency of powder from the powder gas flow onto the products is guaranteed.
  • this object is achieved by a method with the features specified in claim 1 or a device with the features specified in claim 10.
  • the powder gas flow proportions which from the surface of the printed products be reflected by a transport gas stream fed back to the product surface.
  • This transport gas stream is rubbed against the product surface and is essentially laminar.
  • Claim 7 and 8 achieved that such powder particles after a first impact on the product surface not got stuck on this, again against the Product surface. This is done according to Claim 7 by a counter to the direction of conveyance Products current transport gas flow, according to the training of the invention according to claim 8 by a gentle, to the conveying direction of the products in the same direction transport gas flow.
  • the powder gas in the part of the transport gas stream adjacent to the conveying surface fed in which is also possible extensive powder transfer to the product surfaces is an advantage.
  • the arrangement according to claim 14 is possible with regard to intensive initial contact of the powder gas with the product surface advantageous.
  • the powder gas manifold is in the slipstream of hub sections of Blower wheels, does not disturb the transport gas flow essential, but you only have small flow paths from the powder gas distributor pipe to the discharge ends of the Dispensing nozzles.
  • powder gas escapes not in the area, even if the powder gas release is not strictly synchronized with the products to be pollinated is controlled at the powder gas discharge nozzles.
  • this is done automatically an adaptation of the transport gas flow to the conveying speed of the products.
  • the development of the invention according to claim 24 ensures a transverse to the product conveying direction Direction of uniform suction of gas, which is not contains used powder particles.
  • the development of the invention is according to claim 25 advantageous in that the amount of against the Products escaping transport gas and possibly sealing gas according to the respective funding conditions for the Can set products. So you have e.g. for printed products take into account that these are different from paper Basis weight can be made, and around always the same in the area of the pollination device To have funding, you have to have printed products high basis weight with a little less transport gas and Apply sealing gas as products with a low basis weight, if despite the different weights of the Products in the same position in front of the powder gas dispenser wants to guarantee. Powder separation devices, e.g. Powder separation cyclones then work with the best Efficiency when the total gas flow through it does not change.
  • the development of the invention according Claim 25 allows the transport gas stream and possibly Varying the sealing gas flow by controlling it in opposite directions the secondary air opening but the total gas flow that the Separation unit is fed to keep constant.
  • a Powder gas manifold 20 In extension of the hubs of the impellers 16 is a Powder gas manifold 20 arranged, which with the output a powder gas generator 22 is connected. Details the construction of such a powder gas generator can can be taken from DE 38 19 203 A1, on which in this regard Reference is made.
  • the powder gas distributor pipe 20 is perpendicular to the plane of the drawing spaced and aligned one behind the other A plurality of powder gas discharge nozzles 24 that are tubular and extend into the vicinity of the funding level 10.
  • the dispensing nozzles 24 and the powder gas manifold 20 together form a rake-like structure, which is flowed through by the transport gas stream 18.
  • the dispensing nozzles 24 each give under working conditions a powder gas bundle 26, which powder particles distributed in air having.
  • the powder gas tufts 26 are against Surface of the printed sheet directed. That from the product surface flowing away, containing less powder particles Powder gas becomes tangential through the transport gas stream 18 Direction along the conveyor plane 10 in the drawing moved downwards so that more powder particles continuously against the sticky surface of the printed sheets to be dusted be performed.
  • the delivery chute 14 for the transport gas flow 16 at an angle w against the conveying plane 10 is inclined, the amounts in the embodiment contemplated here approximately 22 o.
  • the height of the discharge chute 14 is matched to the length of a window 28, which is provided in a wall 30 of a housing 32 facing the conveying plane 10, in accordance with the angle w.
  • the housing 32 carries one at its upstream end Suction shaft 34, via a powder separation cyclone 36 is connected to the inlet of a suction fan 38.
  • the axis of the suction shaft 34 closes with the conveying plane 10 an angle that is the same amount is like the angle w, but the opposite sign Has.
  • a sealing air shaft is located below the suction shaft 34 40 arranged in which successively perpendicular to the plane of the drawing a plurality of impellers 42 are arranged is. These generate a sealing air flow 44 which the mixture of transport gas and depleted powder gas in redirects the suction shaft 34 set to the conveying level 10, as shown at 46.
  • the wall surface of the housing remote from the conveying plane 10 32 is formed by a microporous plate 48, behind which there is a compressed air box 50.
  • a plate 52 which also is made of microporous material, and behind which is also a compressed air box.
  • the above the boundary wall of the housing to be thought of in the drawing plane 32 is designed analogously.
  • the compressed air box 50 and the other compressed air boxes are via a pressure regulator 54 connected to a compressed air line 56. To this Way constantly emerges from the surfaces of the plates 48, 52 air at low speed, which prevents is that powder particles accumulate on the plates 48, 52.
  • a guide plate 58 is located somewhat behind the conveyor level 10 arranged, which has larger dimensions than the window 28, and at the upstream end with an inlet slope 60 and at the downstream end with an outlet slope 62 is provided. These bevels work with the press sheet gripping bars together.
  • a compressed air distribution pipe 64 arranged which is a plurality perpendicular to Drawing level successively and in the wedge-shaped Gap-pointing compressed air discharge nozzles 66.
  • the guide plate 58 serves on the one hand as a support for the Sheet against the incoming powder gas and transport gas.
  • the guide plate 58 also serves as a cover for the window 28 on which powder gas and transport gas are retained and are directed back to the suction shaft 34, if there is no printed sheet in front of window 28, or only part of a sheet is there.
  • the compressed air manifolds 64 and 70 are with the outlet a blower 72 connected by a blower control unit 74 ago is controlled.
  • the latter controls furthermore the suction fan 38 and drive motors 76, 78, which drive the impellers 16 and 42, respectively.
  • the blower control unit 74 operates in dependence from the output signal of a speed sensor 80, the one for the conveying speed of the printed sheet gripping bars provides proportional signal. It can this is a tachometer generator that works with a Sprocket works together, over which one the sheet-gripping bars carrying chain is running. The blower control unit Roughly speaking, 74 works in such a way that it Delivery capacity of the various fans increases when the Conveying speed of the products is increased, vice versa the flow rate of the blower decreases when the products be moved more slowly.
  • a curve 82 is inserted, e.g. a constant for low conveyor speeds can set small base power of the blower, and a constant upper one for high conveyor speeds Blower performance can specify these areas by a proportional zone are connected.
  • the amount of air from the sealing air shaft 40 sealing air emitted is significantly smaller than the amount of transport air discharged from the discharge chute 14, and the amounts of that from the compressed air manifolds 64, 68 released sealing air is again clear less than the amount of sealing air.
  • Blower wheels 16 is in the discharge shaft 14 downstream of the powder gas discharge nozzles 24 now a discharge pipe 84 for transport gas arranged, which opposes a plurality at the angle w the conveying surface 10 employed discharge nozzles 86 for transport air having. Those emerging from the dispensing nozzles 86 Air jets together form one of the discharge ends of the Powder gas discharge nozzles 24 adjacent air flow 18.
  • the two ends of the delivery tube 84 are over one controllable current regulator 88 with the output of the fan 72 connected.
  • the current regulator 88 is controlled by the fan control 74 analogous to the control of the drive motor 76 of Figure 1.
  • Dispensing tube 90 is provided for sealing air, which on average employed at the angle w against the conveying plane 10 Has discharge nozzles 92 for sealing air.
  • the dispensing tube 90 has one end at both ends Current regulator 94 connected to the output of fan 72, the flow controller 94 through the fan controller 74 is controlled in a similar manner as the drive motor 78 in the exemplary embodiment according to FIG. 1.
  • FIG 3 is the course by the dashed line 96 the chains of the printed sheet conveying device carrying the grippers 6 shown.
  • 98 denotes a sheet depositing station.
  • a pollination box 12 is arranged in the ascending section of the funding path between the outlet of the multi-color press and the End of the printed sheet conveying path, which is above the filing station 98 lies.
  • the blower wheels 16 providing transport gas are now arranged upstream of the powder gas distribution pipe 20, while the fan wheels generating the sealing gas flow 42 are located downstream of the pollination area.
  • the fan wheels are designed and operated so that the transport gas stream 18 is smaller than the sealing air flow 44 due to the arrangement described, the transport gas stream runs 18 with a parallel to the product conveying direction Component, while the sealing gas flow one to Product conveying direction has opposite component.
  • a suction tube 100 with a large diameter is provided between the powder gas partial tube 20 and the sealing air shaft 40.
  • This is provided at its upper-most downstream Mantelinien with a plurality of suction openings 102 of illustration are reproduced half tilted by 90 ° upwards in Figures 4 and 5, in reality that is, in the mark levels of the figures are 4 and 5, namely on the left or top side of the suction pipe 100 there.
  • the suction pipe 100 has in its from the conveying plane 10 area facing away from a central secondary air opening 104, by two oppositely symmetrical control spools 106 can be opened more or less. Moving the spool 106 may e.g. by a transverse actuating rod 108 take place.
  • FIGS. 4 and 5 which is suitable for installation under particularly narrow spaces Conditions is determined, is compared to the embodiment according to Figure 3, the upstream set of impellers 16 replaced by a dispensing tube 84 as is was explained above with reference to FIG. 2.
  • the fan wheels 42 are still provided.
  • FIG. 6 and 7 is a controllable slotted tube Play 110. This has a plurality along one Surface line successively and only by small Bridges 112 of separate slots 114, which are essentially one continuous axial slot of greater width pretend.
  • the inside diameter of the outside diameter corresponds to the slotted tube 110.
  • control spool 116 By turning the control spool 116 on the slotted tube 110 one can thus determine the effective extension of the slots 114 vary in the circumferential direction and so the flow cross section of the slot 114 change.
  • Moving the Control spool 116 can e.g. by an actuator 118 take place with a pinion 120 in a from the spool 116 carried gear ring segment 122 engages.
  • the slotted tube 110 can both be used to discharge a gas stream as well as for sucking in gas.
  • both Applications have one in the longitudinal direction of the pipe, i.e. in Product conveying direction transverse direction uniform Gas delivery or gas intake, the strength of the Slits 114 passing current by twisting the Control spool 116 is adjustable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Confectionery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Printing Methods (AREA)
EP97116338A 1996-11-21 1997-09-19 Méthode et dispositif pour saupoudrer des produits, en particulier des produits imprimés Expired - Lifetime EP0844081B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19648227A DE19648227A1 (de) 1996-11-21 1996-11-21 Verfahren und Vorrichtung zum Bestäuben von Produkten, insbesondere Druckprodukten
DE19648227 1996-11-21

Publications (2)

Publication Number Publication Date
EP0844081A1 true EP0844081A1 (fr) 1998-05-27
EP0844081B1 EP0844081B1 (fr) 2003-08-27

Family

ID=7812365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116338A Expired - Lifetime EP0844081B1 (fr) 1996-11-21 1997-09-19 Méthode et dispositif pour saupoudrer des produits, en particulier des produits imprimés

Country Status (4)

Country Link
US (1) US5931095A (fr)
EP (1) EP0844081B1 (fr)
AT (1) ATE248061T1 (fr)
DE (2) DE19648227A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1798034A3 (fr) * 2005-12-14 2010-04-28 manroland AG Machine d'impression, en particulier à feuilles
CN103786430A (zh) * 2013-12-25 2014-05-14 陕西北人印刷机械有限责任公司 一种节能型热风干燥***及方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859246A1 (de) * 1998-01-20 1999-07-22 Koch Hans Peter Bogenoffsetdruckverfahren und Bogenoffsetdruckmaschine
DE19826083B4 (de) * 1998-06-12 2005-03-31 Koenig & Bauer Ag Puderabsaugung in Auslegern von Bogenrotationsdruckmaschinen
DE19937090B4 (de) * 1998-08-10 2004-10-21 Weitmann & Konrad Gmbh & Co Kg Verfahren und Vorrichtung zum Bestäuben von bedruckten Bogen
DE19920391B4 (de) * 1999-05-04 2009-12-03 Koenig & Bauer Aktiengesellschaft Verfahren und Vorrichtung zum Aufbringen von Puder auf Bedruckstoffe
DE10065265A1 (de) 2000-12-29 2002-07-04 Hans G Platsch Vorrichtung zum Bestäuben von Produkten
JP2005088320A (ja) * 2003-09-17 2005-04-07 Komori Corp 印刷機の集塵装置
JP4417875B2 (ja) * 2005-04-13 2010-02-17 株式会社小森コーポレーション エア流量調整装置
DE102006049648A1 (de) * 2006-10-20 2008-04-24 Heidelberger Druckmaschinen Ag Verfahren zum Steuern eines Puderbestäubers
DE102013205471A1 (de) * 2013-03-27 2014-10-02 Weitmann & Konrad Gmbh & Co Kg Vorrichtung zum verteilten Aufbringen von Puder auf bewegte Druckerzeugnisse
DE102015219584B4 (de) * 2015-10-09 2023-03-02 Robert Wunderlich & Marco Wunderlich GbR Vorrichtung zum Applizieren eines Pulvers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053180A (en) * 1960-03-17 1962-09-11 Donald J Doyle Anti-offset powder spray and cleaner system
DE2207983A1 (de) * 1972-02-21 1972-08-30 Platsch Zerstaeubung Albin Vorrichtung zur puderbestaeubung
JPH0443038A (ja) * 1990-06-08 1992-02-13 Yoshifumi Murakami 印刷機の集麈装置
DE4207118A1 (de) * 1992-03-06 1993-09-09 Platsch Hans G Bestaeubungsgeraet
US5265536A (en) * 1993-01-11 1993-11-30 Millard James S System for collecting airborne powder, mists, and fumes
JPH08300624A (ja) * 1995-05-02 1996-11-19 Mitsubishi Heavy Ind Ltd 粉体供給装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2148739A (en) * 1935-08-03 1939-02-28 News Syndicate Co Inc Mechanism for drying the paper in printing presses
US2613603A (en) * 1947-06-11 1952-10-14 Specialty Papers Company Method and apparatus for setting moisture-setting printing inks
US3167012A (en) * 1961-12-01 1965-01-26 Miehle Goss Dexter Inc Sheet control and spray collection chamber
US3275196A (en) * 1964-07-01 1966-09-27 Intercompany Corp Anti-offset powder distributor
DE2829827C2 (de) * 1978-07-07 1986-04-10 Olympia Werke Ag, 2940 Wilhelmshaven Führungseinrichtung für Aufzeichnungsträger bei Druckwerken
US5537925A (en) * 1993-09-03 1996-07-23 Howard W. DeMoore Infra-red forced air dryer and extractor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053180A (en) * 1960-03-17 1962-09-11 Donald J Doyle Anti-offset powder spray and cleaner system
DE2207983A1 (de) * 1972-02-21 1972-08-30 Platsch Zerstaeubung Albin Vorrichtung zur puderbestaeubung
JPH0443038A (ja) * 1990-06-08 1992-02-13 Yoshifumi Murakami 印刷機の集麈装置
DE4207118A1 (de) * 1992-03-06 1993-09-09 Platsch Hans G Bestaeubungsgeraet
US5265536A (en) * 1993-01-11 1993-11-30 Millard James S System for collecting airborne powder, mists, and fumes
JPH08300624A (ja) * 1995-05-02 1996-11-19 Mitsubishi Heavy Ind Ltd 粉体供給装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1798034A3 (fr) * 2005-12-14 2010-04-28 manroland AG Machine d'impression, en particulier à feuilles
CN103786430A (zh) * 2013-12-25 2014-05-14 陕西北人印刷机械有限责任公司 一种节能型热风干燥***及方法
CN103786430B (zh) * 2013-12-25 2016-08-31 陕西北人印刷机械有限责任公司 一种节能型热风干燥***及方法

Also Published As

Publication number Publication date
EP0844081B1 (fr) 2003-08-27
US5931095A (en) 1999-08-03
DE59710653D1 (de) 2003-10-02
ATE248061T1 (de) 2003-09-15
DE19648227A1 (de) 1998-05-28

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