EP0886579B1 - Dispositif pour saupoudrer des produits d'impression - Google Patents

Dispositif pour saupoudrer des produits d'impression Download PDF

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Publication number
EP0886579B1
EP0886579B1 EP97901026A EP97901026A EP0886579B1 EP 0886579 B1 EP0886579 B1 EP 0886579B1 EP 97901026 A EP97901026 A EP 97901026A EP 97901026 A EP97901026 A EP 97901026A EP 0886579 B1 EP0886579 B1 EP 0886579B1
Authority
EP
European Patent Office
Prior art keywords
conveying cylinder
cylinder
conveying
printed products
powder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97901026A
Other languages
German (de)
English (en)
Other versions
EP0886579A1 (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.)
Individual
Original Assignee
Individual
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
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Application filed by Individual filed Critical Individual
Publication of EP0886579A1 publication Critical patent/EP0886579A1/fr
Application granted granted Critical
Publication of EP0886579B1 publication Critical patent/EP0886579B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/06—Powdering devices, e.g. for preventing set-off

Definitions

  • the invention relates to a device for dusting of printed products according to the preamble of the claim 1.
  • Such a pollinator is in US-A-3 053 180.
  • printed sheets are on one Transfer cylinder moved past a powder dispensing bar. Excess powder gets through from a nozzle bar emitted compressed air from the surface of the printed product blown off and sucked off through a perforated plate.
  • a pollination device is therefore intended by the present invention according to the preamble of the claim 1 so that the printed products dusted in a constant position with respect to the nozzle arrangement become.
  • the printed products are flat on the circumferential surface of a Delivery cylinder arranged, which they on the nozzle assembly moved past. This way you have the same Distance between the surface of the printed products and the nozzle arrangement, even when the Conveyor speed, as well as a very reliable Conveying the printed products in the vicinity of the powder dispensing nozzle arrangement.
  • peripheral surface of the feed cylinder is also in terms of a particularly secure setting of the printed products on the peripheral wall of the feed cylinder advantageous. This holding on can also be particularly good can be controlled via the size of the negative pressure. It leaves are equally good for very different Realize substrates of the printed products (paper, foils, etc.).
  • Claim 2 ensures that the peripheral wall of the feed cylinder is permeable to air, but not powder particles be sucked through them.
  • a fixation of the printed products on the peripheral wall of the feed cylinder, as specified in claim 3 ensures a good and safe positioning of the Print products on the feed cylinder.
  • the development of the invention according to claim 7 has the advantage that the dispensed by the nozzle assembly Powder did not get into remote machine areas.
  • 10 denotes a side frame plate, the the outlet end of a printing press represents.
  • a second parallel to the frame plate 10 side frame plate is above the drawing plane of Figure 1 to think.
  • sprockets 12 stored, over which a conveyor chain 14 runs.
  • each a printed sheet 18 of one not shown in the drawing move past the last ink station past dryers 20, 22, 24.
  • the entire arrangement is symmetrical to a longitudinal median plane the printing press, which coincides with the drawing plane.
  • the tangential to the outlet-side sprocket 14 runs Surface of a feed cylinder 28, which is also in the side plates 10 is mounted.
  • the feed cylinder 28 runs at one of the speed of the conveyor chains 16 corresponding peripheral speed against the Clockwise around.
  • a little more than 90 ° to the transfer point between the conveyor chains 16 and the conveyor cylinder 28 offset in the direction of rotation run tangentially to Delivery cylinder 28 further sprockets 30, via which Conveyor chains 32 run. These are on the outlet side Sprockets 34 out.
  • the conveyor chains 32 carry again Grippers 18 and run synchronously with the feed cylinder 28 and thus to the conveyor chains 16, so that the printed sheets 20th overall uniform on an essentially continuous Way are promoted.
  • a suction box 36 arranged, facing the feed cylinder 28 Edge at a small distance parallel above the cylinder surface running. Run inside the suction box 36 near the front and rear wall blow lines 37, which are connected to the output of a compressor 38 and at the open end adjacent to the feed cylinder 28 end of the suction box.
  • a powder nozzle bar 40 arranged parallel to the axis of the feed cylinder 28. It has discharge openings facing the cylinder surface for powder mist cone 42.
  • the interior of the suction box 36 is also via a line 44 connected to a suction fan 46.
  • the feed cylinder 28 has one made of porous material manufactured peripheral wall, and its interior protrudes one led out in the cylinder axis, in the drawing not shown suction line also with the Suction blower 46 in connection.
  • the pores of the wall material are open and have smaller ones Diameter than the dusted powder particles.
  • a high positive Potential electrode 54 arranged, which itself extends across the path of the printed sheets 20 and their Surface charges electrostatically.
  • Another electrode 56 is arranged and extends downstream of the chain wheels 30 also across the web of printed sheets. By the ionization accomplished by this electrode the sheets are unloaded again.
  • the printed sheets 20 When passing the electrode 54, the printed sheets 20 electrostatically charged.
  • the grippers 18 and the signatures 20 are as a result their electrostatic charge and due to the negative pressure the inside of the delivery cylinder 28 taken over by the feed cylinder 28 and there against Outer surface of the peripheral wall.
  • the so flutter-free and printed sheets lying securely on the feed cylinder 28 20 run under the powder nozzle bar 40 and are dusted by the powder mist cone 42.
  • Am through the Sprockets 30 and the feed cylinder 28 predetermined
  • the printed sheets are taken from the grippers 18 taken over, which are supported by the conveyor chains 32 and past electrode 56, causing the printed sheets be unloaded again.
  • the printed sheets 20 are then in the drawing to the left until a storage space for the finished printed materials are conveyed where the grippers 33 can be opened.
  • any powder which is carried along is blown off from the section of the surface of the conveying cylinder which is at the bottom of the drawing by air jets emerging from the blowing nozzle strip 50 and suctioned off via the line 44.
  • the air flow maintained in the suction box 36 due to the blow lines 37 and the application of negative pressure largely prevents powder particles from escaping laterally from the suction box surrounding the nozzle bar 40.
  • FIGS. 2 to 4 are components already referenced above were explained in Figure 1, again with the same reference numerals Mistake. Therefore, these components do not need to be described again in detail.
  • Figure 2 differs of that according to Figure 1 in that the feed cylinder 28 now has a smaller diameter and its axis in essentially on the connecting line of the axes of the Sprockets 14 and 30 lies. This arrangement thus builds particularly compact.
  • the powder nozzle bar 40 is direct from the right-hand wall of suction box 36 carried.
  • the cleaning of the remote from the suction box 36 Side of the feed cylinder 28 is only in Figure 2 arrows indicated by the flow of air.
  • An arrangement as shown in Figure 2 is suitable for installation in printing machines with lacquer tower.
  • Electrodes 54, 56 provided to the printed sheets before the Perform loading on the feed cylinder 28, or to discharge behind the feed cylinder 28.
  • 36 electrodes 58, 60 are provided in the interior of the suction box, which serve to electrostatically charge the powder. The voltage required for this can e.g. in the area from 1 kV to 100 kV.
  • the pollination device is the cylinder of the last printing unit Commercial printing press assigned without a coating tower.
  • the Delivery cylinder 28 also takes over here Roll of an impression cylinder.
  • a schematic Powder mist generator 62 shown which is a powder / Carrier gas mixture generated with which the powder nozzle bar 40 is applied.
  • the above-mentioned exemplary embodiments have in common that the printed sheets in the area of the powder nozzle bar 40 flat and solid on a base, namely one Circumferential portion of the feed cylinder 28 are set. So you have a constant distance between the paint or varnish layer to be dusted, no dynamic Interaction between the printed sheets and the powder mist cones, as only with grippers obtained printed sheet obtained by fluttering the latter and also the escape of Powder in the suction machine preventing suction box 36, which surrounds the powder nozzle bar 40, up to immediate Neighborhood of the surface of the feed cylinder 28 pull so that the powder mist leakage currents are drastically reduced are, because with conventional pollination facilities, where the moving past the printed sheets the powder nozzle strip 40 is done by grippers, a must The large distance ensures that the grippers pass through between the suction box and the plane of movement of the printed sheets be respected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Methods (AREA)
  • Discharge By Other Means (AREA)

Claims (8)

  1. Dispositif pour saupoudrer des produits d'impression (20), comprenant un ensemble de buses (40) délivrant un brouillard de poudre (42), et un dispositif de convoyage par lequel les produits d'impression (20) sont animés d'un mouvement en regard de l'ensemble de buses (40), le dispositif de convoyage présentant un cylindre convoyeur (28), caractérisé par le fait que ledit cylindre convoyeur (28) comporte une paroi périphérique fabriquée en un matériau translucide, et son espace interne est en communication avec une source de dépression (46).
  2. Dispositif selon la revendication 1, caractérisé par le fait que la paroi périphérique du cylindre convoyeur (28) est fabriquée en un matériau à pores ouverts, dont les pores sont plus petits que le diamètre des particules de poudre.
  3. Dispositif selon la revendication 1, caractérisé par le fait que le cylindre convoyeur (28) est monté avec absence de potentiel, et un dispositif (54) est installé en amont dudit cylindre convoyeur (28), en vue de charger électrostatiquement les produits d'impression (20).
  4. Dispositif selon l'une des revendications 1-3, caractérisé par le fait qu'un convoyeur d'amenée (12-16) converge vers le cylindre convoyeur (28) ; et un convoyeur (30-34) d'évacuation des produits d'impression (20) bifurque dudit cylindre convoyeur (28) dans une zone de sortie angulairement décalée de la zone d'alimentation dudit cylindre convoyeur, préétablie entre le convoyeur d'amenée (12-16) et le cylindre convoyeur (28).
  5. Dispositif selon la revendication 4, caractérisé par le fait qu'un dispositif de nettoyage (48, 50) est affecté au cylindre convoyeur (28) dans la région périphérique située à l'extérieur de la zone de convoyage préétablie par la zone d'alimentation et la zone de sortie.
  6. Dispositif selon la revendication 5, caractérisé par le fait que le dispositif de nettoyage comprend un ensemble de buses d'insufflation (50), et un caisson d'aspiration (48) entourant ce dernier.
  7. Dispositif selon l'une des revendications 1-6, caractérisé par le fait que l'ensemble de buses (40) est entouré par un caisson d'aspiration (36) dont les bords se trouvent, à faible distance, au-dessus de la surface périphérique du cylindre convoyeur (28).
  8. Dispositif selon l'une des revendications 1-7, caractérisé par le fait que le cylindre convoyeur (28) est le dernier cylindre d'impression d'une machine d'impression.
EP97901026A 1996-03-11 1997-01-15 Dispositif pour saupoudrer des produits d'impression Expired - Lifetime EP0886579B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19609438 1996-03-11
DE19609438A DE19609438B4 (de) 1996-03-11 1996-03-11 Einrichtung zum Bestäuben von Druckprodukten
PCT/EP1997/000147 WO1997033753A1 (fr) 1996-03-11 1997-01-15 Dispositif pour saupoudrer des produits d'impression

Publications (2)

Publication Number Publication Date
EP0886579A1 EP0886579A1 (fr) 1998-12-30
EP0886579B1 true EP0886579B1 (fr) 2001-05-16

Family

ID=7787901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97901026A Expired - Lifetime EP0886579B1 (fr) 1996-03-11 1997-01-15 Dispositif pour saupoudrer des produits d'impression

Country Status (4)

Country Link
EP (1) EP0886579B1 (fr)
JP (1) JP4118953B2 (fr)
DE (2) DE19609438B4 (fr)
WO (1) WO1997033753A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2228215A1 (fr) 2009-03-12 2010-09-15 manroland AG Machine de traitement de feuilles

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19901245A1 (de) * 1998-02-17 1999-08-19 Heidelberger Druckmasch Ag Vorrichtung zum Pudern bedruckter Bogen
DE29805248U1 (de) * 1998-03-24 1998-05-20 MAN Roland Druckmaschinen AG, 63075 Offenbach Bestäubungseinrichtung in einer Druckmaschine
DE19826083B4 (de) * 1998-06-12 2005-03-31 Koenig & Bauer Ag Puderabsaugung in Auslegern von Bogenrotationsdruckmaschinen
DE19836022A1 (de) 1998-08-10 2000-02-17 Weitmann & Konrad Fa Vorrichtung zum Bestäuben von bedruckten Bogen aus Papier o. dgl.
DE10227242A1 (de) * 2002-06-19 2004-02-05 Koenig & Bauer Ag Anordnung zum Pudern von Flächengebilden in einer Druckmaschine
DE10256320A1 (de) * 2002-11-28 2004-06-09 Weitmann & Konrad Gmbh & Co Kg Einrichtung zum Bestäuben von Druckbogen
DE102010001326A1 (de) * 2010-01-28 2011-08-18 manroland AG, 63075 Bogendruckmaschine
DE102010040371A1 (de) 2010-09-08 2012-03-08 Manroland Ag Verfahren zum Bestäuben von Bogenmaterial und Verarbeitungsmaschine mit einer Bestäubungsvorrichtung
DE102012200898A1 (de) 2012-01-23 2013-07-25 Manroland Ag Verfahren zum Aufbringen von Puder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0771649A1 (fr) * 1995-10-26 1997-05-07 MAN Roland Druckmaschinen AG Dispositif de décharge pour une machine rotative pour imprimer des feuilles

Family Cites Families (2)

* 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
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0771649A1 (fr) * 1995-10-26 1997-05-07 MAN Roland Druckmaschinen AG Dispositif de décharge pour une machine rotative pour imprimer des feuilles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2228215A1 (fr) 2009-03-12 2010-09-15 manroland AG Machine de traitement de feuilles
DE102009001510A1 (de) 2009-03-12 2010-09-16 Manroland Ag Bogenverarbeitungsmaschine

Also Published As

Publication number Publication date
JP2000506090A (ja) 2000-05-23
WO1997033753A1 (fr) 1997-09-18
DE19609438A1 (de) 1997-09-18
DE19609438B4 (de) 2007-10-11
EP0886579A1 (fr) 1998-12-30
JP4118953B2 (ja) 2008-07-16
DE59703549D1 (de) 2001-06-21

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