EP3041680A2 - Mécanisme de dosage avec poste de retrait de liquide - Google Patents

Mécanisme de dosage avec poste de retrait de liquide

Info

Publication number
EP3041680A2
EP3041680A2 EP14747627.9A EP14747627A EP3041680A2 EP 3041680 A2 EP3041680 A2 EP 3041680A2 EP 14747627 A EP14747627 A EP 14747627A EP 3041680 A2 EP3041680 A2 EP 3041680A2
Authority
EP
European Patent Office
Prior art keywords
liquid
nozzle head
relative movement
dispensing surface
dispensing
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Withdrawn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
EP14747627.9A
Other languages
German (de)
English (en)
Inventor
Martin Krümpelmann
Frank Gunschera
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP3041680A2 publication Critical patent/EP3041680A2/fr
Withdrawn legal-status Critical Current

Links

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
    • B41F31/08—Ducts, containers, supply or metering devices with ink ejecting means, e.g. pumps, nozzles
    • 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
    • B05C1/0817—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 removing partially liquid or other fluent material from the roller, e.g. scrapers
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/06—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with a blast of gas or vapour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/20—Ink-removing or collecting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/28—Spray apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • 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
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2231/00—Inking devices; Recovering printing ink
    • B41P2231/20—Recovering printing ink

Definitions

  • the invention relates to a metering unit and a method for the controlled transfer of a liquid, in particular printing ink, lacquer, liquid toner or adhesive.
  • a preferred use of the metering unit according to the invention and the method according to the invention is the use in a Flexod backbone.
  • the original system is the fountain roller inking unit (3-roller inking unit), which is known for example from DE 29 42 521 C2.
  • the ink is metered by squeezing off the excess ink in the nip between the fountain roller and the anilox roller.
  • the adjustment of the optimum amount of ink moves only in a very narrow range of contact pressure between fountain roller and anilox roller, so that this range of contact pressure is difficult to determine and adjust. If the contact pressure is too high, then too little ink is transferred, so that the complete coloring of the format cylinder is no longer guaranteed. On the other hand, if the contact pressure is too low, then too much ink is transferred, so that the spaces between the grid points become clogged and the printed image smeared.
  • the squeegee system again differentiates between the open and the closed system, whereby the closed system has now prevailed as far as possible, as this also an automatic cleaning of the anilox rollers and all ink-carrying parts and thus fast and automatable job and color changes is possible.
  • a closed squeegee system according to the prior art is known for example from EP1 302 315 B1.
  • a remaining problem of such a doctor chamber system is the fact that the Ensuring the tightness of various measures must be taken, which entail a constant and not negligible maintenance.
  • the front-side seals mentioned in EP1 302 315 B1 must be regularly replaced and replaced in order to ensure the tightness of the closed doctoring chamber system.
  • the closed doctoring chamber system according to EP1 302 315 B1 is usually used in a central cylinder printing machine, as is known for example from WO 2009/144016 A1. This means that typically 8 closed doctoring chamber systems are arranged around the central cylinder.
  • the central cylinder In order to maintain the necessary uniform pressure in the nip, the central cylinder must be manufactured with high concentricity and tempered with the lowest possible temperature tolerance.
  • the central cylinder is a sensitive centerpiece in any central-cylinder printing press, in the vicinity of which maintenance work on the doctoring chamber systems can be carried out only with extreme caution and only by trained specialist personnel. This in turn increases the cost of any maintenance on the doctoring chamber systems.
  • the object of the invention is therefore to further reduce the maintenance of the particular known from the flexographic printing inking without having to accept losses in terms of print quality, the chamber system in flexographic printing with the closed squeegee is already achievable.
  • the metering unit according to the invention is a metering unit for the controlled transfer of a liquid, in particular printing ink, lacquer, liquid toner or adhesive, with a dispensing surface which is wetted with a liquid film for metered dispensing of the liquid, with a A nozzle head for applying the liquid film, comprising a drive which effects a relative movement between the nozzle head and the emitting surface, having a liquid transfer station which is connected downstream of the nozzle head in the direction of relative movement and wherein the liquid from the liquid film at least partially transferable to a receiving surface is, and with a liquid return station, which is downstream of the liquid transfer station in the direction of relative movement and upstream of the nozzle head and is removed in the liquid from at least part of the donor surface.
  • a flexographic inking unit can be operated particularly advantageously with the metering unit according to the invention.
  • the method according to the invention is a method for the controlled transfer of a liquid, in particular printing ink, varnish, liquid toner or adhesive, in which, in a first method step, a nozzle head is moved over a dispensing surface in order to wet the dispensing surface with a liquid film, in which, in a second method step, the liquid is at least partially transferred from the liquid film to a receiving surface, and in which, in a third method step, the liquid is taken from at least part of the emitting surface.
  • a flexographic inking unit with a smooth roller can be operated particularly advantageously, in which the smooth roller performs the function of the conventional anilox roller.
  • the inking of the smooth roll takes place with a nozzle head.
  • a nozzle head can be designed, for example, as used in the method of slide bead coating, curtain coating or spray coating mentioned in JP 2007-069559 A.
  • the specific design of the nozzle head can be carried out, for example, as shown in JP 2005-296797 A or JP 2006- 281 103 A.
  • An essential finding of the invention is based on the liquid recovery station, which is not known from JP 2007-069559 A, from JP 2005-296797 A or from JP 2006-281103 A.
  • the liquid return station is connected downstream of the liquid transfer station in the direction of relative movement and upstream of the nozzle head.
  • liquid is additionally removed from those areas of the smooth roll before inking by the nozzle head, in which case no liquid transfer took place in the liquid transfer station.
  • the coloring of the smooth roller with a nozzle head only leads to high-quality printing results within a flexographic printing machine when the entire donor surface is actually freed of the liquid film before re-coloring by the nozzle head. This is achieved by the liquid return station, by no later than those areas are freed from the liquid film, which have remained intact in the liquid transfer station.
  • An important advantage of the solution according to the invention is the fact that, in contrast to coloring with a chambered doctor blade system, lateral seals are no longer needed on the end faces of the smooth roller.
  • the coloring of the smooth roller with the nozzle head can be made slightly wider than the printing width of the format cylinder, so that reliable and uniform color can be transferred to the format cylinder over its entire width.
  • the liquid return station can in turn advantageously be designed wider than the inking area of the smooth roller, so that after the liquid transfer station not removed liquid or color surfaces reliably freed of color and thus virtually cleaned on an ongoing basis.
  • Another advantage of the solution according to the invention is finally the fact that the width of the coloring on the donor surface with a Düsenkopf can vary much easier compared to a blade chamber.
  • a change in the inking width is always very expensive, since the replacement of a doctoring chamber is associated with a considerable installation effort.
  • the width of the coloring can be realized much easier in all possible variants of a coloring by a nozzle head.
  • a doctor blade for doctoring excess liquid against the donating surface can be adjusted, wherein the doctor blade downstream of the nozzle head in the direction of relative movement and the liquid transfer station is connected upstream.
  • a doctor blade is not employed, as in the case of an anilox roller, with a sliding contact with the smooth roller, but rather with a minimum working distance, so that the liquid film can be doctored off to a smaller film thickness.
  • a nozzle head has proven to be advantageous as a nozzle head, as shown in JP 2006-281103 A.
  • the inking process of the smooth roll is optimized with the nozzle head until a liquid film has been achieved, as is required in the downstream liquid transfer station.
  • the process parameters to be optimized here are, in particular, the volume flow emerging from the nozzle head, the working distance between the nozzle head and the dispensing surface and the working angle of the nozzle head transversely to the direction of the relative movement.
  • the volume flow emerging from the nozzle head basically results from the scoop volume of the emitting surface and the feed movement of the relative movement. From these two parameters can the theoretical volume flow is calculated and set in advance. With a camera or with a suitable sensor can now be checked whether the liquid level required by the downstream liquid transfer station has already been reached. If this is not the case, then the volume flow emerging from the nozzle head is readjusted accordingly.
  • the working distance and the working angle of the nozzle head are optimized so that just forms a liquid film with the required layer thickness after coloring by the nozzle head.
  • the optimization of the inking process can also be carried out continuously during the printing process in the same way. For this purpose, for example, the printed image can be continuously monitored via a printed image camera and used as a measured variable for the optimization of the corresponding parameters.
  • an air flow can be generated beyond the nozzle head at the impact point of the liquid on the emitting surface.
  • the liquid between the nozzle head and impact point forms a kind of curtain, it is additionally necessary to differentiate between the side of the nozzle head connected downstream in the direction of the relative movement and the side of the nozzle head upstream in the direction of the relative movement.
  • a first air flow can be generated on the side of the nozzle head downstream in the direction of the relative movement
  • a second air flow can be generated on the side of the nozzle head which is upstream in the direction of the relative movement.
  • the single airflow or even the two airflows can flow rectified or even opposite, and they can clocked or continuously flow, this depending on how the location of the point of impact is to be influenced.
  • the above-described air flow control at least approximately compensates for the different influence of gravity that arises in the case of several inking units of a central cylinder machine in that the different inking units have a different angle of attack with respect to the gravity vector.
  • the nozzle head is designed as a slot nozzle, which extends transversely to the direction of the relative movement over the donor surface, as shown for example in JP 2006- 281 103 A is shown.
  • a slot nozzle proves to be particularly advantageous in combination with the air flow control described above, because a slot nozzle forms a characteristic liquid bead between the nozzle and the point of impact, the shape of which can be regulated and stabilized by means of the air flow control. For example, it is possible that the shape of the liquid bead is automatically observed with a camera and supplied as a measured variable to the air flow control.
  • the slot nozzle In the design of the slot nozzle is to ensure that the transverse distribution of the exiting flow is as homogeneous as possible, so that in fact a uniform liquid bead can form.
  • one measure could be, for example, to provide fan-shaped longitudinal channels within the slot nozzle. Through the longitudinal channels cross flows within the slot nozzle and thus also the occurrence of turbulent flows can be largely suppressed.
  • Another possibility is to actively control the flow distribution within the slot nozzle so that a homogeneous transverse distribution of the exiting volume flow is supported. For example, each partial volume flow within a longitudinal channel of the slot nozzle could be controlled by valves and / or pumps.
  • each partial volume flow within a longitudinal channel of the slot nozzle could also be controlled by variable cross sections, wherein the variable cross sections can be realized by elastic rubber walls, the be acted upon pneumatically.
  • a closed control loop for actively controlling the flow distribution within the slot nozzle is also possible, for example by observing the liquid bead at several points transversely to the relative movement with corresponding cameras, and using each individual camera signal as a measurement signal for a specific partial volume flow.
  • the advantageous embodiment of the liquid return station ultimately depends largely on the characteristics and properties of the donor surface.
  • a rubber roller which is engageable against the smooth roller, wherein the reclaimed liquid is doctored off the rubber roller.
  • the surface of the rubber roller is made of the same material as the material of the plate of the format cylinder. In this way, approximately the same conditions prevail with respect to the surface of the smooth roller in the liquid transfer station.
  • FIG. 1 shows a metering device according to the invention within a flexographic printing
  • FIG. 2 shows further details of the metering unit according to the invention according to FIG. 1
  • FIG. 3 shows an inventive metering unit within a flexographic printing central cylinder machine according to a second exemplary embodiment
  • FIG. 4 shows further details of the metering device according to the invention according to FIG. 3.
  • Fig. 1 shows an inventive metering within a flexographic central cylinder machine according to a first embodiment.
  • the central cylinder machine may be, for example, an 8-color printing machine in which 8 printing units are arranged around an impression cylinder. Behind each printing unit, a drying device is arranged in each case. The of the preference device The next material web is pressed firmly onto the impression cylinder by a rubberized pressure roller, so that no air can get between the impression cylinder and the material web and the material web rests firmly on the impression cylinder. The material web is guided immovably firmly past the 8 printing units so that no register fluctuations occur.
  • the impression cylinder is tempered from the inside with water to a constant temperature. Shown in FIG.
  • the impression cylinder 101 typically has a diameter of 2000 mm and typically allows printing widths up to 1500 mm.
  • the printing length is determined by the grouping of 8 printing units and by the diameter of the impression cylinder 101 and is typically 1200 mm.
  • a format cylinder 102 with a printing plate glued thereon.
  • the metering device according to the invention with a smooth roller 103, a slot 104, a rubber roller 105 and a doctor blade 106th
  • the smooth roller 103 is colored.
  • the working distance between the slot nozzle 104 and smooth roller 103 is adjustable in the direction of the axis Y by a control unit. Also controlled by a control unit is the working angle of the slot nozzle, for which purpose the slot nozzle is mounted pivotably about the axis Z. Due to an exact control of the ink flow rate and the positioning parameters of the slot nozzle, it is possible to color the smooth roller with the optimal liquid film required. Further details of the inking process will be explained with reference to FIG. 2.
  • the liquid film on the smooth roller 103 is partially transferred to the printing plate of the format cylinder 102. If the liquid film strikes depressions in the printing plate, these regions of the liquid film are not involved in the ink transfer.
  • the downstream in the direction of rotation of the format cylinder 102 side of the smooth roller 103 thus has areas that are still wetted with a liquid film. If the surface of the smooth roller 103 still partially wetted in this way were to be directly re-stained by the slot nozzle 104, then this would lead to an uneven ink quantity distribution after the inking process, since the ink quantity bead emerging from the slot nozzle is not able to vary greatly Directly compensate for color quantity distributions.
  • FIG. 2 shows further details of the metering device according to the invention according to FIG. 1. Shown are the smooth roller 103 and the slot nozzle 104 of FIG. 1, which are now identified in FIG. 2 by the reference numerals 203 and 204. As already mentioned, the slot nozzle 204 is movable along the axis Y and pivotally mounted about the axis Z. On the upper side of the slot nozzle there are a multiplicity of attachment stubs 205, into which ink supply hoses (not shown) open. The total ink flow supplied by all ink supply tubes corresponds to the pumping volume rate, which can be calculated from the scoop volume and the speed of the smooth roller 203.
  • the ink flow rate can also be controlled individually, specifically as a function of the transverse distribution (ie, in the Z-axis direction) of the ink quantity bead 201 and 202 exiting at the slot nozzle.
  • the inking area 201 of the ink amount bead On the side of the slot nozzle 204 downstream in the direction of rotation of the smooth roller 203 the inking area 201 of the ink amount bead, while forms on the upstream in the direction of rotation of the smooth roller 203 side of the slot nozzle 204, a characteristic meniscus 202, which allows a measurement of the transverse distribution.
  • a corresponding camera system (not shown) installed, which forwards the measuring signals to a control unit for controlling the Farbzu Switzerlandschläuche.
  • an air flow nozzle 206 is installed on the upstream side of the slot nozzle 204 in the direction of rotation of the smooth roller 203, which generates a suction air flow in front of the meniscus 202 along the Z axis. If, for example, the slotted nozzle 204 is displaced along the Y axis to increase the working distance and the meniscus 202 threatens to tear off in the direction of rotation of the smooth roller 203, this process can also be detected by the camera system and the air flow nozzle 206 can be controlled such that the meniscus 202 is brought back against the direction of rotation of the smooth roller 203 and stabilized.
  • Fig. 3 shows an inventive metering within a flexographic printing central cylinder engine according to a second embodiment.
  • the components shown in Fig. 1 are also in Fig. 3 again, with matches in the last digit of the respective reference numerals designate corresponding parts.
  • the description according to FIG. 1 can therefore be referred to first analogously.
  • FIG. 4 shows further details of the metering device according to the invention according to FIG. 3.
  • the components shown in FIG Fig. 4 again, with matches in the last digit of the respective reference numerals again identify corresponding parts.
  • the description according to FIG. 2 can thus be referred to first analogously.
  • the coloring with the slot nozzle 403 takes place against the force of gravity.
  • the effects of gravity opposite to FIG. 2 make themselves noticeable above all in the inking area 401.
  • a second Heilströmdüse 407 is also installed.
  • the air flow nozzle 407 does not generate suction air flow, but rather creates a flow of compressed air at the surface of the inking area 401.
  • the strength of the compressed air flow is thereby adjusted so that the effects of gravity are compensated and the inking area 401 of the ink quantity bead is thus pressed against the smooth roller 403, as it were, against the force of gravity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un mécanisme de dosage et un procédé de transfert contrôlé d'un liquide, notamment d'une encre d'impression, d'un vernis, d'un toner liquide ou d'un adhésif. En vue de réduire encore plus l'effort de maintenance des systèmes encreurs connus notamment du domaine de la flexographie sans pour autant subir de pertes au niveau de la qualité d'impression, l'invention réalise un mécanisme de dosage destiné au transfert contrôlé d'un liquide, notamment d'une encre d'impression, d'un vernis, d'un toner liquide ou d'un adhésif, comprenant une surface de dépose, laquelle est mouillée avec un film de liquide en vue d'une dépose dosée du liquide, comprenant une tête de dosage destinée à l'application du film de liquide, comprenant un mécanisme d'entraînement qui produit un mouvement relatif entre la tête de la buse et la surface de dépose, comprenant une station de transfert de liquide, qui est montée à la suite de la tête de buse dans le sens du mouvement relatif et au niveau de laquelle le liquide peut être transféré au moins partiellement du film de liquide sur une surface réceptrice, et comprenant une station de reprise de liquide, qui est montée à la suite de la station de transfert de liquide et avant la tête de buse dans le sens du mouvement relatif, et au niveau de laquelle le liquide est prélevé d'au moins une partie de la station de dépose.
EP14747627.9A 2013-08-02 2014-08-01 Mécanisme de dosage avec poste de retrait de liquide Withdrawn EP3041680A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013215267.1A DE102013215267A1 (de) 2013-08-02 2013-08-02 Dosierwerk
PCT/EP2014/066623 WO2015014994A2 (fr) 2013-08-02 2014-08-01 Mécanisme de dosage

Publications (1)

Publication Number Publication Date
EP3041680A2 true EP3041680A2 (fr) 2016-07-13

Family

ID=51266328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14747627.9A Withdrawn EP3041680A2 (fr) 2013-08-02 2014-08-01 Mécanisme de dosage avec poste de retrait de liquide

Country Status (3)

Country Link
EP (1) EP3041680A2 (fr)
DE (1) DE102013215267A1 (fr)
WO (1) WO2015014994A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017211843B4 (de) * 2017-07-11 2019-02-14 Koenig & Bauer Ag Druckmaschine mit einem nach dem Inkjet-Verfahren arbeitenden Druckwerk sowie Verfahren zur Vorbereitung von Bedruckstoff
US11638927B2 (en) 2017-09-15 2023-05-02 Hp Indigo B.V. Selective wetting of a roller

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