EP1110728B1 - Système de dosage pour un liquide dans une unité de revêtement - Google Patents

Système de dosage pour un liquide dans une unité de revêtement Download PDF

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Publication number
EP1110728B1
EP1110728B1 EP00127631A EP00127631A EP1110728B1 EP 1110728 B1 EP1110728 B1 EP 1110728B1 EP 00127631 A EP00127631 A EP 00127631A EP 00127631 A EP00127631 A EP 00127631A EP 1110728 B1 EP1110728 B1 EP 1110728B1
Authority
EP
European Patent Office
Prior art keywords
profile body
chamber
reservoir
metering system
gap
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
EP00127631A
Other languages
German (de)
English (en)
Other versions
EP1110728A1 (fr
Inventor
Jürgen Schölzig
Guido Dipl.-Ing. Reschke
Reihold Dipl.-Ing. Guba
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
MAN Roland 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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1110728A1 publication Critical patent/EP1110728A1/fr
Application granted granted Critical
Publication of EP1110728B1 publication Critical patent/EP1110728B1/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
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/027—Ink rail devices for inking ink rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers

Definitions

  • the invention relates to a metering system for coating liquids in a coating unit, preferably for a printing press or a coating machine, with a chambered doctor blade and an associated, provided with wells and webs anilox roller.
  • a metering system of this type is known as a chambered doctor blade with an associated roller with cups and webs from EP 0 629 501 A1.
  • the chambered doctor blade has an end closed housing with a chamber formed in the interior and a positive direction in the direction of rotation of the roller closing doctor blade and a negatively employed working doctor blade.
  • the chamber doctor also has a feed line feeding into the lower part of the chamber and a return line for the coating medium which leads away in the upper part of the chamber.
  • a brush is connected as a profile body with the inner wall of the housing over the length of the chamber, which is in contact with the circumference of the roller.
  • the brush is disposed approximately centrally in the chamber so that an upper and a lower reservoir is formed within the chamber.
  • the brush in the chamber is associated with the positively-placed locking doctor blade directly adjacent. The brush is to prevent the ingress of air bubbles in the reservoir as a whole or in the lower reservoir, since this has a negative effect on the filling of the wells in an anilox roll.
  • the disadvantage here is that the brush is subject to wear due to the constant contact with the anilox roller and that when processing fast-curing coating liquids, such as water-based dispersion varnish, for example Glued brush structure or at least must be added and cleaned.
  • fast-curing coating liquids such as water-based dispersion varnish, for example Glued brush structure or at least must be added and cleaned.
  • EP 0 568 674 B1 discloses a metering system with chamber doctor blade and screened application roller for the processing of solvent-containing printing fluids, in particular for flexographic printing.
  • This chamber doctor blade has a profile body connected to the inner wall of the housing, which has a pressure nose arranged in the direction of the roll at a distance from the roll.
  • the pressure nose has a return in the direction of rotation of the roller in order to achieve a sudden cross-sectional widening of the reservoir in the direction of rotation of the roller behind the pressure nose within the chamber.
  • the invention has for its object to provide a metering system of the type described above that avoids the disadvantages mentioned, in particular a more uniform Filling the wells of an anilox roller allows and reduces the formation of bubbles within the metering system.
  • a first advantage is due to the fact that the dosing system can be used universally for higher machine speeds, in particular for printing presses.
  • a sheet-fed rotary printing press with approx. 15,000 sheets / h is cited here.
  • anilox rollers with a larger scoop volume a larger volume of air is introduced into the chamber space of a chamber doctor blade through the emptied cells. This can affect the print quality. It is therefore advantageous that dosing systems can also be used with anilox rollers having a larger scoop volume and sufficient filling of the cells is ensured, so that no impairment of the gloss occurs on the printing material.
  • An advantage is also that, starting from the anilox roller, a more uniform layer thickness of the coating liquid on the printing substrate in a printing press is ensured.
  • a further advantage is that the chambered doctor blade can be easily cleaned by a simple design of the contour in the interior and the formation of nests for depositing coating liquid is noticeably reduced.
  • the simple contour is also advantageous if a cleaning of the chambered doctor blade and possibly the anilox roller is required.
  • the metering system especially of the chambered doctor blade, can be operated optionally with a one-piece reservoir (without profile body) or with a two-part reservoir (with profile body), depending on the coating application.
  • the profile body is releasably connectable at least with the inner wall of the chamber space.
  • a metering system 5 consisting of a screened application roller 3 with cups and webs and a chamber doctor blade 4 is assigned to a forme cylinder 2 in a coating unit.
  • the forme cylinder 2 carries, for example, a blanket (planographic printing form) or a flexible high-pressure mold and has a cylinder channel.
  • This form cylinder 2 is operatively connected to a sheet-guiding printing cylinder 1, wherein the printing cylinder 1 is double-sized relative to the forme cylinder 2 and has two diametrically staggered sheet holding systems for the sheet transport in the conveying direction 6.
  • the rastered applicator roll 3 is in its direction of rotation 18 a positively hired Sch Strukturrakelblatt 13 and a negatively employed Härakelblatt 10, which are arranged on the chambered doctor blade 4 assigned.
  • the chambered doctor blade 4 has in known manner a housing with frontally arranged boundary walls, so that the screened applicator roller 3, a chamber space is formed.
  • a feed line 7 feeds into a reservoir 11 adjacent to the working doctor blade 10 (in the lower area of the chamber space in FIG. 2) a coating liquid and a return line 8 leads from a reservoir 12 adjacent to the closing doctor blade 13 (in FIG. 2 the upper area of the chamber space) the excess coating liquid via an upwardly open collection system 9 from.
  • the supply and return lines 7,8 are operated by means of conveyor and suction pump as a circulation system.
  • An axially parallel to the screened applicator roll 3 within the chamber chamber of the chambered doctor blade 4 arranged profile body 14 is with its back 25 by means of a detachable connection 15 connected to the inner wall 16 of the chamber space.
  • the inner wall 16 is preferably flat and the inner wall 16 associated rear 25 of the profile body 14 is also flat.
  • the inner wall 16 itself can receive a part of the profile body 14 releasably positively.
  • the chamber space of the chamber doctor blade 4 for receiving the coating liquid is formed by the optional use of the detachably arranged profile body 14 in a first reservoir 11 in the region of the working doctor blade 10 and a second reservoir 12 in the region of the closing doctor blade 13.
  • the profile body 14 preferably extends over the full length within the chamber space of the chambered doctor blade 4 and is arranged without contact to the adjacent application roller 3, so that between profile body 14 and the circumference of the application roller 3, a gap 17 sets, such that the gap 17 starting From the reservoir 11 to the reservoir 12 can be flowed through by a coating liquid.
  • the detachable connection 15 between the inner wall 16 and profile body 14 is preferably achieved by positive engagement or adhesion.
  • Fig. 4 some embodiments are shown by way of example.
  • the structure of the chambered doctor blade 4 is identical to the training gem. Fig. 2, however, for reasons of clarity, the supply and the return line 7,8 are not shown.
  • a non-positive connection of this type can be achieved, for example, by means of permanent magnets arranged axially parallel to the application roller 3 on the inner wall 16 and / or the profile body 14 (FIG. 4a).
  • the profile body 14 is connected to an expandable clamping body, wherein the clamping body within the chamber space releasably fixed in position the releasable connection 15 represents.
  • the profile body 14 is received in a clamping body, which form-fit, for example by means of screw connection, with the inner wall 16, the releasable connection 15 forms.
  • the profile body 14 is designed as a releasable connection 15 in a form-fitting manner by means of a screw connection with the inner wall 16.
  • Embodiments of the cross section of the profile body 14 are shown by way of example in FIG. 3. It is gem. Fig. 3a of the profile body 14 formed in the direction of gap 17 concave curvature 19 of the side surfaces and the front has a plateau 21. Alternatively, the side surfaces and or the plateau 21 are formed with convex curvature 20.
  • Gem. Fig. 3b is the cross section of the profile body 14 with a semicircular curvature 22, gem.
  • Fig. 3c as a triangle 24, acc. Fig. 3d as a trapezoid 23 and acc. Fig. 3 e formed as a rectangle / square 26, wherein there is always a gap 17 between the profile body 14 and the applicator roll 3.
  • the profile body 14 on the inner wall 16 by means of the releasable connection 15 can be fastened.
  • existing air bubbles are already discharged through the return line 8 in the reservoir 12, preferably aspirated.
  • the profile body 14 further prevents the further penetration of air bubbles and depending on the coating liquid and the possible foaming.
  • the profile body 14 can be removed from the chamber chamber of the chamber doctor blade 4 or reused.

Landscapes

  • Coating Apparatus (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Medicinal Preparation (AREA)
  • Pretreatment Of Seeds And Plants (AREA)

Claims (7)

  1. Système de dosage (5) pour des liquides d'enduction dans une unité d'enduction, de préférence pour une machine à imprimer ou une machine de vernissage, avec une chambre à racle (4) et avec un cylindre applicateur (3) associé, muni de godets et de barrettes, la chambre à racle (4) comportant au moins un conduit d'alimentation (7) qui alimente l'espace de la chambre, un conduit de retour (8) débouchant de l'espace de la chambre pour un liquide d'enduction et un corps profilé (14) s'étendant en direction axiale dans l'espace de la chambre, sur la paroi intérieure (16), entre le conduit d'alimentation (7) et le conduit de retour (8), un interstice (17) étant formé entre le corps profilé (14) et le cylindre applicateur (3) et le corps profilé (14) divisant l'espace de la chambre en un premier réservoir (11) et en un deuxième réservoir (12), qui sont reliés par l'interstice,
    caractérisé en ce que
    le corps profilé (14) forme avec la paroi intérieure (16) une liaison amovible (15) et est utilisable au choix sur la paroi intérieure (16) de la chambre à racle (4),
    si on utilise le corps profilé (14), le premier réservoir (11) est associé dans le sens de rotation du cylindre applicateur (3) à la lame de la racle (10) et le conduit d'alimentation (7) est disposé de façon à alimenter le premier réservoir (11), et
    le sens de circulation du liquide d'enduction dans l'interstice (17) est opposé au sens de rotation du cylindre applicateur (3).
  2. Système de dosage selon la revendication 1,
    caractérisé en ce que la liaison amovible (15) est assurée par complémentarité de forme ou de force.
  3. Système de dosage selon la revendication 2,
    caractérisé en ce que la liaison amovible par complémentarité de forme (15) est un assemblage par vis ou par enclenchement.
  4. Système de dosage selon la revendication 2,
    caractérisé en ce que la liaison amovible par complémentarité de force (15) est un assemblage par aimant permanent.
  5. Système de dosage selon la revendication 1,
    caractérisé en ce que le corps profilé (14) avec une face arrière plane (25) comporte une section transversale sous forme de rectangle/carré (26) et en ce que la paroi intérieure (16) est plane.
  6. Système de dosage selon la revendication 1,
    caractérisé en ce que le corps profilé (14) avec une face arrière plane (25) comporte une section transversale sous la forme de courbure concave (19) ou de courbure convexe (20) vers l'interstice (17).
  7. Système de dosage selon la revendication 1,
    caractérisé en ce que le corps profilé (14) avec une face arrière plane (25) comporte une section transversale sous la forme d'un triangle (24) ou d'un trapèze (23) vers l'interstice (17).
EP00127631A 1999-12-22 2000-12-16 Système de dosage pour un liquide dans une unité de revêtement Expired - Lifetime EP1110728B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29922546U 1999-12-22
DE29922546U DE29922546U1 (de) 1999-12-22 1999-12-22 Dosiersystem für Beschichtungsflüssigkeiten in einer Beschichtungseinheit

Publications (2)

Publication Number Publication Date
EP1110728A1 EP1110728A1 (fr) 2001-06-27
EP1110728B1 true EP1110728B1 (fr) 2007-01-31

Family

ID=8083371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00127631A Expired - Lifetime EP1110728B1 (fr) 1999-12-22 2000-12-16 Système de dosage pour un liquide dans une unité de revêtement

Country Status (3)

Country Link
EP (1) EP1110728B1 (fr)
AT (1) ATE353048T1 (fr)
DE (2) DE29922546U1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0020279D0 (en) * 2000-08-18 2000-10-04 Mead Corp Substrate coating
DE10164773A1 (de) 2001-09-03 2003-07-17 Kroenert Max Maschf Druckkammerrakel
ITPC20050018A1 (it) * 2005-04-04 2006-10-05 Nordmeccanica Spa Gruppo di spalmatura per macchine accoppiattrici con sistemi di ricircolo dell'adesivo
DE102007011630A1 (de) * 2007-03-09 2008-09-11 OCé PRINTING SYSTEMS GMBH Vorrichtung zum Auftragen eines Fluids auf einen Bedruckstoff
DE102008019433A1 (de) * 2008-04-17 2009-12-03 Hauni Maschinenbau Ag Beleimung von Materialstreifen der Tabak verarbeitenden Industrie
CN106694316B (zh) * 2015-07-20 2019-03-15 宜兴威尼特集装袋有限公司 纸袋打筒机点胶装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0368485A3 (fr) * 1988-10-31 1991-01-30 Seiken Graphics, Inc. Impression lithographique
AU2944492A (en) 1991-11-26 1993-06-28 Cornelis Gorter Inking cell doctor blade for an ink transfer body
US5239925A (en) * 1992-06-02 1993-08-31 Ronald L. Harper Ink distribution apparatus
US5425809A (en) 1993-06-17 1995-06-20 Howard W. DeMoore Anilox coater with brush
DE4444034C2 (de) * 1994-12-10 1997-07-03 4 P Folie Forchheim Gmbh Einrichtung zum Auftragen eines hochviskosen Mediums
US5826509A (en) * 1995-10-18 1998-10-27 Deneka; P. Kenneth Printing coating head device
DE19754684A1 (de) * 1997-12-10 1999-06-17 Pagendarm Technologie Gmbh Vorrichtung zum Auftragen eines fließfähigen Mediums auf eine bewegte Oberfläche

Also Published As

Publication number Publication date
ATE353048T1 (de) 2007-02-15
EP1110728A1 (fr) 2001-06-27
DE50014022D1 (de) 2007-03-22
DE29922546U1 (de) 2000-02-17

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