EP2221183A1 - Fluid ejection machine for coating deposition - Google Patents

Fluid ejection machine for coating deposition Download PDF

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Publication number
EP2221183A1
EP2221183A1 EP10162957A EP10162957A EP2221183A1 EP 2221183 A1 EP2221183 A1 EP 2221183A1 EP 10162957 A EP10162957 A EP 10162957A EP 10162957 A EP10162957 A EP 10162957A EP 2221183 A1 EP2221183 A1 EP 2221183A1
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EP
European Patent Office
Prior art keywords
substrate
station
nozzles
machine according
product
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
EP10162957A
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German (de)
French (fr)
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EP2221183B1 (en
Inventor
Edmond Abergel
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.)
MGI Digital Technology SA
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MGI France SA
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Application filed by MGI France SA filed Critical MGI France SA
Priority to SI200631447T priority Critical patent/SI2221183T1/en
Priority to PL10162957T priority patent/PL2221183T3/en
Publication of EP2221183A1 publication Critical patent/EP2221183A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00216Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using infrared [IR] radiation or microwaves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0022Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • B41J2/14201Structure of print heads with piezoelectric elements

Definitions

  • Digital jet machine for laying a coating on a substrate.
  • the invention relates to the field of printing without physical contact with a substrate of which at least one face is made of plastic and more particularly a machine, independent of a printing system, which allows, before or after the printing system , the jet application of viscosity product, up to 1000 centipoise, and described as medium to important, such as varnish, glue, conductive ink or scratch, on a substrate of thickness and dimension variable.
  • a first technique the ink contained in a nozzle is expelled by an overpressure created by a gas bubble formed at a heating resistor which creates a chemical reaction by passing the ink to the gaseous state.
  • Another technique for creating an overpressure is to use a piezoelectric component that will bend under the effect of a voltage, so as to reduce the volume of the ink tank. An ink droplet is thus expelled from the nozzle.
  • the present invention therefore aims to overcome one or more disadvantages of the prior art by creating a machine for laying, without contact on a portion of a substrate, products or inks having a medium fluidity, such as varnish , glue, conductive or scratch-resistant ink, on a substrate of varying thickness and thickness.
  • a medium fluidity such as varnish , glue, conductive or scratch-resistant ink
  • the laying zone is defined for each substrate by a parameter file concerning the shape of the zone, its position on the substrate relative to the reference points of the substrate, the quantity of product to be sprayed, a control software of the machine uses this information to translate them into parameters of relative displacement of the substrate and the nozzles, selective control of the nozzles and repetition of offset passage of the substrate in front of the nozzles to produce, if necessary, joined lines
  • the ramp in which the nozzles are arranged is provided with a means of displacement relative to the support.
  • the projection location on the substrate is defined by the relative displacement of the substrate relative to the ramp in which the nozzles are arranged.
  • the product is a glue and the drying is heated air stream.
  • the product is an aqueous varnish and the drying is infra red.
  • the product is a scratch-resistant opaque ink and the drying is heated air flow.
  • the machine comprises a device for pressurizing the product to be sprayed.
  • Another purpose is to propose a use of this machine in a system for preparing identification documents (identity card, passport, driving license) or security (access badge, payment card or access key). ).
  • This object is achieved by the use of a machine according to the invention used upstream or downstream of an autonomous printing station or a station for placing an electronic chip on the substrate.
  • the machine according to the invention is used upstream of the printing station for gluing in a different area from that receiving the printing and a second machine is used downstream of the printing station for the Put a varnish on the printed part.
  • the machine is used upstream of the printing station for the application of varnish in a different area of the area receiving the printing and a second machine is used downstream of the printing station for the installation of glue in a third zone.
  • the machine is used upstream of the station for placing an electronic chip on the substrate for laying glue in the zone intended to receive the chip.
  • the machine is controlled by a control computer (10) that controls the different workstations and also collects information from the different sensors.
  • the sensors give, for example, position information of the substrates (13), configuration information of the substrates (13) or validation information following a correctly performed operation or not.
  • the substrates (13) awaiting printing are placed in an input magazine (5) having a capacity defined according to the nature of the substrate (13) and printing requirements.
  • the input store (5) is designed to accept several thousand substrates (13) of nature, of thickness up to 800 m and of variable size (credit card format up to A0 format). ) and possibly at least one side is plastic.
  • the substrates (13) are stored in an output magazine (8) having generally the same capacity as the input magazine (5).
  • a gripper (4) of the substrates (13) makes it possible to remove the substrates (13) from the input magazine (5) and to arrange them on a conveyor to move them along a work line comprising several workstations. job.
  • the first workstation of the chain is a feeder (6) with indexing of the substrate (13) which allows the positioning with respect to two reference edges or the detection of a marker printed on the substrate (13).
  • a sensor will detect the position information and transmit it to the computer over a wired or wireless network. This information stored in memory in the computer will then be reused at other workstations, controlled by the computer. Controls are also performed to detect the presence of a single substrate (13) at each post of the conveyor.
  • the next workstation is the projection device (2, 9) of the product to be applied on the support.
  • the non-contact projection device (2, 9) is detailed on the figure 2 .
  • the projection device comprises a reservoir 9 which contains the viscous product to be sprayed.
  • Nonlimiting examples of products contained in the reservoir are varnish, scratch-off ink, conductive ink or glue whose average viscosities are between 100 and 1000 centipoise, ie, well above the viscosities of the coatings. printing inks that are normally a dozen centipoise.
  • the supply of the tank, not shown, is effected, for example, manually or automatically by a supply circuit or semi-automatically by an operator-driven device.
  • the reservoir (9) is connected to a pressurizing device (10).
  • the pressurizing device therefore comprises a means of controlling and regulating the pressure of the product sent to the nozzles, in a non-limiting manner controlled by the computer.
  • the nozzles fed directly by the pressurizing device (10) are all individually controlled by a device (11) for controlling the nozzles, in a non-limiting manner, controlled by the computer.
  • the nozzles are aligned and mounted in a ramp, thereby forming a nozzle manifold (12).
  • Each nozzle is constituted by the end of a hollow needle which is vibrated by a piezoelectric actuator glued to the resonator formed by mounting the hollow needle ramp.
  • the piloting of each nozzle is an electro-acoustic process, that is to say that the product is projected by a vibration controlled by an electrical excitation.
  • the nozzles spaced from 0.1 to 0.5mm thus make it possible to cover a precise surface.
  • the laying zone is defined for each substrate by a parameter file contained in a memory zone of the computer, concerning the shape of the zone, its position on the substrate relative to the reference points of the substrate, the quantity of product to be sprayed, control software of the machine using this information to translate them into parameters of relative displacement of the substrate and the nozzles, selective control of the nozzles and repetition of offset passage of the substrate in front of the nozzles to produce if necessary contiguous lines.
  • the next station of the projection machine is the drying oven (7).
  • the oven (7) allows to completely or partially dry the projected product.
  • the drying depending on the product applied, can be carried out by infrared radiation in the case of an aqueous varnish or by a heated air flow for a glue or a scratch-off ink or by UV in function of the projected product.
  • the drying then allows the substrate (13) to be stored in the outlet magazine (8), without the projected product being transferred to other substrates (13) or to the magazine (8) with which the substrate ( 13) is in contact.
  • the figure 3 gives non-limiting examples of poses made by projection onto substrates (13).
  • a layer of varnish (14) is performed on a front face or after printing.
  • a layer of varnish occupies an area on the almost rectangular substrate, the corners of which are rounded.
  • a margin not covered with projected product is left on the periphery of the face of the substrate.
  • a substrate On an area (16, figure 3 ) a substrate a layer of thermally reactivatable glue is produced in a pattern, for example a small rectangle rounded at its corners.
  • Different patterns of scratch-off ink (15) are placed on other zones, such as for example an arrow, a star or any other pattern including, in a nonlimiting manner, a contour formed of angles and straight lines and / or of curves.
  • the electro-acoustic control adjusts the projection of material in duration and power.
  • the laying areas are then defined by this digital method with an accuracy of the order of 0.1 mm.
  • the machine can therefore pose a point or to cover the entire surface of a substrate.
  • the laying area is defined for each substrate by a file of parameterization concerning the shape of the zone, its position on the substrate relative to the reference points of the substrate, the quantity of product to be sprayed.
  • a machine control software uses this information to translate them into parameters of relative displacement of the substrate and the nozzles, into selective nozzle control parameters, and into repeated flow reiteration parameters of the substrate in front of the nozzles to produce lines if necessary. contiguous.

Abstract

The machine has a reading device (6) to read and determine the position of a substrate. Projecting devices (2, 9) are composed of a series of nozzles each controlled by a control device and supplied by a reservoir containing a viscous product. A drying device has an infrared drying oven (7) for drying the product. The controlling of a printing station based on the position of the substrate, reading unit and drying unit and management of information captured at different workstations are carried by an information unit based on an established programming file.

Description

Machine numérique à jet pour la pose d'un revêtement sur un substrat.Digital jet machine for laying a coating on a substrate.

L'invention concerne le domaine de l'impression sans contact physique avec un substrat dont au moins une face est en plastique et plus particulièrement une machine, indépendante d'un système d'impression, qui permet, avant ou après le système d'impression, la pose par jet de produit de viscosité, allant jusqu'à 1000 centipoises, et qualifiée de moyenne à importante, tels que du vernis, de la colle, de l'encre conductrice ou grattable, sur un substrat d'épaisseur et de dimension variable.The invention relates to the field of printing without physical contact with a substrate of which at least one face is made of plastic and more particularly a machine, independent of a printing system, which allows, before or after the printing system , the jet application of viscosity product, up to 1000 centipoise, and described as medium to important, such as varnish, glue, conductive ink or scratch, on a substrate of thickness and dimension variable.

Il existe des systèmes d'impression à jet d'encre fonctionnant avec des encres dont la viscosité est faible et de l'ordre d'une dizaine de centipoises.There are inkjet printing systems operating with inks whose viscosity is low and of the order of ten centipoises.

Les systèmes existant utilisent différentes techniques pour projeter une bulle d'encre sur le support. Selon une première technique l'encre contenue dans une buse est expulsée par une surpression créée par une bulle gazeuse formée au niveau d'une résistance de chauffage qui crée une réaction chimique en faisant passer l'encre à l'état gazeux. Une autre technique pour créer une surpression est d'utiliser un composant piézoélectrique qui va s'incurver sous l'effet d'une tension électrique, de façon à réduire le volume du réservoir d'encre. Une gouttelette d'encre est ainsi expulsée de la buse.Existing systems use different techniques to project an ink bubble on the media. According to a first technique, the ink contained in a nozzle is expelled by an overpressure created by a gas bubble formed at a heating resistor which creates a chemical reaction by passing the ink to the gaseous state. Another technique for creating an overpressure is to use a piezoelectric component that will bend under the effect of a voltage, so as to reduce the volume of the ink tank. An ink droplet is thus expelled from the nozzle.

Ces systèmes sont toutefois limités à des encres ou des produits ayant une fluidité contrôlée et une viscosité faible ainsi que des molécules de très faible dimension. Par exemple il n'est pas possible avec les appareils existants de poser sans contact avec le support, des produits tels que du vernis, de l'encre grattable, de l'encre conductrice ou de la colle, notamment sur un substrat plastique ou la face plastique d'un substrat.However, these systems are limited to inks or products having a controlled fluidity and a low viscosity as well as very small molecules. For example it is not possible with existing devices to lay without contact with the support, products such as varnish, scratch-off ink, conductive ink or glue, especially on a plastic substrate or the plastic face of a substrate.

Jusqu'à présent la pose de tels produits sur des substrats, éventuellement plastique ou dont une face est plastifiée, s'effectuait par enduction et non par projection, ce qui rend complexe la pose sur seulement une portion de surface du substrat.Until now the laying of such products on substrates, possibly plastic or one of which is plasticized, was carried out by coating and not by projection, which makes laying on only a surface portion of the substrate.

De plus il existe un réel besoin, notamment pour la personnalisation ou pour rendre des documents difficilement falsifiable, de pouvoir poser facilement sur un substrat, éventuellement avec une face plastique, d'une couche de produit dans une zone déterminée avant ou après impression du substratIn addition there is a real need, particularly for customization or to make documents difficult to falsify, to be able to easily lay on a substrate, possibly with a plastic face, a layer of product in a given area before or after printing the substrate

La présente invention a donc pour objet de palier un ou plusieurs inconvénients de l'art antérieur en créant une machine permettant de poser, sans contact sur une portion d'un substrat, des produits ou des encres ayant une fluidité moyenne, tels que du vernis, de la colle, de l'encre conductrice ou grattable, sur un substrat d'épaisseur et de dimension variable.The present invention therefore aims to overcome one or more disadvantages of the prior art by creating a machine for laying, without contact on a portion of a substrate, products or inks having a medium fluidity, such as varnish , glue, conductive or scratch-resistant ink, on a substrate of varying thickness and thickness.

Cet objectif est atteint grâce à une machine numérique à jet de matière visqueuse pour pose d'un revêtement sur une face d'un substrat comprenant un magasin d'entrée et un magasin de sortie, un moyen informatique de gestion des opérations sur chacun des postes de travail, un moyen de déplacement du substrat entre les différents postes de travail un moyen de préhension et de transfert du substrat, du magasin d'entrée vers le moyen de déplacement et du moyen de déplacement vers le magasin de sortie, caractérisé en ce qu'elle comporte au moins :

  • un poste de lecture qui lit et détermine au moins une position du substrat et/ou de repères marqués sur le substrat,
  • un poste de pose composé au moins d'une série de buses agencées selon une rampe, chaque buse étant pilotée séparément par des moyens de commandes, et alimentée par un réservoir contenant du produit à viscosité moyenne ou importante à projeter sur le substrat pendant un déplacement relatif entre le substrat et le poste de pose, pour effectuer la pose du produit dans une zone déterminée du substrat, les buses étant des aiguilles creuses mises en vibration chacune par un actionneur piézoélectrique collé sur un résonateur formé par le montage de l'aiguille creuse, l'excitation de l'actionneur en durée et puissance déterminant la dimension et la forme de la goutte de matière à viscosité moyenne à importante;
  • un poste de séchage comportant un four de séchage à infra rouge ou à courant d'air chauffé ou UV ;le contrôle des moyens de commande du poste de pose en fonction de la position du substrat, du poste de lecture et du poste de séchage et/ou la gestion des informations captées aux différents postes de travail pour coordonner les opérations étant effectué par les moyens informatiques de gestion en fonction d'un fichier de programmation établi.
This objective is achieved by means of a viscous material jet machine for laying a coating on one side of a substrate comprising an inlet store and an outlet store, a computer means for managing the operations on each of the stations. method for moving the substrate between the various workstations means for gripping and transferring the substrate from the input magazine to the moving means and the moving means to the output magazine, characterized in that it includes at least:
  • a reading station which reads and determines at least one position of the substrate and / or marks marked on the substrate,
  • a laying station consisting of at least one series of nozzles arranged in a ramp, each nozzle being controlled separately by control means, and fed by a reservoir containing medium viscosity product or large to be projected onto the substrate during a displacement relative between the substrate and the laying station, to perform the laying of the product in a specific area of the substrate, the nozzles being hollow needles each vibrated by a piezoelectric actuator bonded to a resonator formed by the mounting of the hollow needle , the excitation of the actuator in duration and power determining the dimension and the shape of the drop of medium to large viscosity material;
  • a drying station comprising an infra-red or heated-air or UV-drying oven, controlling the control means of the laying station according to the position of the substrate, the reading station and the drying station and / or the management of the information collected at the various workstations to coordinate the operations being performed by the computer management means according to an established programming file.

Selon une autre particularité, la zone de pose est définie pour chaque substrat par un fichier de paramétrage concernant la forme de la zone, sa position sur le substrat par rapport aux repères du substrat, la quantité de produit à projeter, un logiciel de commande de la machine exploitant ces informations pour les traduire en paramètres de déplacement relatif du substrat et des buses, de commande sélective des buses et de réitération de passage décalé du substrat devant les buses pour produire si nécessaire des lignes jointivesAccording to another particularity, the laying zone is defined for each substrate by a parameter file concerning the shape of the zone, its position on the substrate relative to the reference points of the substrate, the quantity of product to be sprayed, a control software of the machine uses this information to translate them into parameters of relative displacement of the substrate and the nozzles, selective control of the nozzles and repetition of offset passage of the substrate in front of the nozzles to produce, if necessary, joined lines

Selon une autre particularité, la rampe dans laquelle sont agencées les buses est munie d'un moyen de déplacement par rapport au support.According to another particularity, the ramp in which the nozzles are arranged is provided with a means of displacement relative to the support.

Selon une autre particularité, le lieu de projection sur le substrat est défini par le déplacement relatif du substrat par rapport à la rampe dans laquelle sont agencées les buses.According to another feature, the projection location on the substrate is defined by the relative displacement of the substrate relative to the ramp in which the nozzles are arranged.

Selon une autre particularité, le produit est une colle et le séchage est à courant d'air chauffé.According to another feature, the product is a glue and the drying is heated air stream.

Selon une autre particularité, le produit est un vernis aqueux et le séchage est à infra rouge.According to another feature, the product is an aqueous varnish and the drying is infra red.

Selon une autre particularité, le produit est une encre opaque grattable et le séchage est à courant d'air chauffé.According to another feature, the product is a scratch-resistant opaque ink and the drying is heated air flow.

Selon une autre particularité, la machine comporte un dispositif de mise en pression du produit à projeter.According to another feature, the machine comprises a device for pressurizing the product to be sprayed.

Un autre but est de proposer une utilisation de cette machine dans un système de préparation de documents d'identification (carte d'identité, passeport, permis de conduire) ou de sécurité (badge d'accès, carte de paiement ou clé d'accès).Another purpose is to propose a use of this machine in a system for preparing identification documents (identity card, passport, driving license) or security (access badge, payment card or access key). ).

Ce but est atteint par l'utilisation d'une machine selon l'invention utilisée en amont ou en aval d'un poste autonome d'impression ou d'un poste de mise en place d'une puce électronique sur le substrat.This object is achieved by the use of a machine according to the invention used upstream or downstream of an autonomous printing station or a station for placing an electronic chip on the substrate.

Selon une autre particularité, la machine selon l'invention est utilisée en amont du poste d'impression pour la pose de colle dans une zone différente de celle recevant l'impression et une deuxième machine est utilisée en aval du poste d'impression pour la pose d'un vernis sur la partie imprimée.According to another feature, the machine according to the invention is used upstream of the printing station for gluing in a different area from that receiving the printing and a second machine is used downstream of the printing station for the Put a varnish on the printed part.

Selon une variante, la machine est utilisée en amont du poste d'impression pour la pose de vernis dans une zone différente de la zone recevant l'impression et une deuxième machine est utilisée en aval du poste d'impression pour la pose de colle dans une troisième zone.According to a variant, the machine is used upstream of the printing station for the application of varnish in a different area of the area receiving the printing and a second machine is used downstream of the printing station for the installation of glue in a third zone.

Selon une variante, la machine est utilisée en amont du poste de mise en place d'une puce électronique sur le substrat pour la pose de colle dans la zone destinée à recevoir la puce.According to one variant, the machine is used upstream of the station for placing an electronic chip on the substrate for laying glue in the zone intended to receive the chip.

L'invention, ses caractéristiques et ses avantages apparaîtront plus clairement à la lecture de la description faite en référence aux figures référencées ci-dessous :

  • La figure 1 représente un exemple de dispositif automatisé d'impression des supports;
  • La figure 2 représente un exemple de dispositif de projection;
  • La figure 3 représente des exemples de motifs de projection sur des supports;
  • La figure 4 représente schématiquement une configuration d'utilisation de deux machines selon l'invention.
The invention, its characteristics and its advantages will appear more clearly on reading the description made with reference to the figures referenced below:
  • The figure 1 represents an example of an automated device for printing media;
  • The figure 2 represents an example of a projection device;
  • The figure 3 represents examples of projection patterns on supports;
  • The figure 4 schematically represents a configuration of use of two machines according to the invention.

Considérons maintenant la figure 1. La machine est contrôlée par un ordinateur de contrôle (10) qui commande les différents postes de travail et également qui collecte les informations des différents capteurs. Les capteurs donnent par exemple, des informations de positions des substrats (13), des informations de configurations des substrats (13) ou des informations de validation suite à une opération correctement effectuée ou non. Les substrats (13) en attente d'impression sont placés dans un magasin d'entrée (5) ayant une capacité définie en fonction de la nature du substrat (13) et des besoins pour l'impression. Dans un exemple de réalisation, le magasin d'entrée (5) est prévu pour accepter plusieurs milliers de substrats (13) de nature, d'épaisseur jusqu'à 800 m et de dimension variable (format carte de crédit jusqu'au format A0) et éventuellement dont au moins une face est en plastique. Une fois le processus de pose terminé, les substrats (13) sont stockés dans un magasin de sortie (8) ayant généralement la même capacité que le magasin d'entrée (5). Un dispositif de préhension (4) des substrats (13) permet de sortir les substrats (13) du magasin d'entrée (5) et de les disposer sur un convoyeur pour les déplacer le long d'une chaîne de travail comportant plusieurs postes de travail. Le premier poste de travail de la chaîne est un margeur (6) avec indexage du substrat (13) qui permet la mise en position par rapport à deux bords de référence ou la détection d'un repère imprimé sur le substrat (13). Un capteur va détecter les informations de positions et les transmettre à l'ordinateur par un réseau câblé ou sans fils. Ces informations stockées en mémoire dans l'ordinateur seront ensuite réutilisées à d'autres postes de travail, pilotés par l'ordinateur. Des contrôles sont également effectués afin de détecter la présence d'un substrat (13) unique à chaque poste du convoyeur.Now consider the figure 1 . The machine is controlled by a control computer (10) that controls the different workstations and also collects information from the different sensors. The sensors give, for example, position information of the substrates (13), configuration information of the substrates (13) or validation information following a correctly performed operation or not. The substrates (13) awaiting printing are placed in an input magazine (5) having a capacity defined according to the nature of the substrate (13) and printing requirements. In an exemplary embodiment, the input store (5) is designed to accept several thousand substrates (13) of nature, of thickness up to 800 m and of variable size (credit card format up to A0 format). ) and possibly at least one side is plastic. Once the laying process is complete, the substrates (13) are stored in an output magazine (8) having generally the same capacity as the input magazine (5). A gripper (4) of the substrates (13) makes it possible to remove the substrates (13) from the input magazine (5) and to arrange them on a conveyor to move them along a work line comprising several workstations. job. The first workstation of the chain is a feeder (6) with indexing of the substrate (13) which allows the positioning with respect to two reference edges or the detection of a marker printed on the substrate (13). A sensor will detect the position information and transmit it to the computer over a wired or wireless network. This information stored in memory in the computer will then be reused at other workstations, controlled by the computer. Controls are also performed to detect the presence of a single substrate (13) at each post of the conveyor.

Le poste de travail suivant est le dispositif de projection (2, 9) du produit à appliquer sur le support. Le dispositif de projection sans contact (2, 9) est détaillé sur la figure 2. Le dispositif de projection comporte un réservoir 9 qui contient le produit visqueux à projeter. Des exemples non limitatifs de produits contenus dans le réservoir sont du vernis, de l'encre grattable, de l'encre conductrice ou de la colle dont les viscosités moyennes sont comprises entre 100 et 1000 centipoises c'est à dire bien supérieures aux viscosités des encres d'impression qui sont normalement d'une dizaine de centipoises. L'alimentation du réservoir non représentée est effectuée, par exemple, manuellement ou automatiquement par un circuit d'alimentation ou encore de façon semi-automatique par un dispositif piloté par un opérateur. Le réservoir (9) est relié à un dispositif de mise en pression (10). Le système de projection nécessite en effet une pression déterminée pour avoir un bon fonctionnement. Le dispositif de mise en pression comporte donc un moyen de contrôler et de réguler la pression du produit envoyé vers les buses, de manière non limitative commandé par l'ordinateur. Les buses alimentées directement par le dispositif (10) de mise en pression, sont toutes pilotées individuellement par un dispositif de pilotage (11) des buses, de manière non limitative, commandé par l'ordinateur. Les buses sont alignées et montées dans une rampe, formant ainsi une rampe de buses (12). Chaque buse est constituée par l'extrémité d'une aiguille creuse qui est mise en vibration par un actionneur piézoélectrique collé sur le résonateur formé par le montage de l'aiguille creuse en rampe. Le pilotage de chaque buse est un procédé électro-acoustique, c'est-à-dire que le produit est projeté par une vibration contrôlée par une excitation électrique. Les buses espacées de 0,1 à 0,5mm permettent ainsi de couvrir une surface précise.The next workstation is the projection device (2, 9) of the product to be applied on the support. The non-contact projection device (2, 9) is detailed on the figure 2 . The projection device comprises a reservoir 9 which contains the viscous product to be sprayed. Nonlimiting examples of products contained in the reservoir are varnish, scratch-off ink, conductive ink or glue whose average viscosities are between 100 and 1000 centipoise, ie, well above the viscosities of the coatings. printing inks that are normally a dozen centipoise. The supply of the tank, not shown, is effected, for example, manually or automatically by a supply circuit or semi-automatically by an operator-driven device. The reservoir (9) is connected to a pressurizing device (10). The projection system requires indeed a determined pressure to have a good operation. The pressurizing device therefore comprises a means of controlling and regulating the pressure of the product sent to the nozzles, in a non-limiting manner controlled by the computer. The nozzles fed directly by the pressurizing device (10) are all individually controlled by a device (11) for controlling the nozzles, in a non-limiting manner, controlled by the computer. The nozzles are aligned and mounted in a ramp, thereby forming a nozzle manifold (12). Each nozzle is constituted by the end of a hollow needle which is vibrated by a piezoelectric actuator glued to the resonator formed by mounting the hollow needle ramp. The piloting of each nozzle is an electro-acoustic process, that is to say that the product is projected by a vibration controlled by an electrical excitation. The nozzles spaced from 0.1 to 0.5mm thus make it possible to cover a precise surface.

La zone de pose est définie pour chaque substrat par un fichier de paramétrage contenu dans une zone mémoire de l'ordinateur, concernant la forme de la zone, sa position sur le substrat par rapport aux repères du substrat, la quantité de produit à projeter, un logiciel de commande de la machine exploitant ces informations pour les traduire en paramètres de déplacement relatif du substrat et des buses, de commande sélective des buses et de réitération de passage décalé du substrat devant les buses pour produire si nécessaire de lignes jointives.The laying zone is defined for each substrate by a parameter file contained in a memory zone of the computer, concerning the shape of the zone, its position on the substrate relative to the reference points of the substrate, the quantity of product to be sprayed, control software of the machine using this information to translate them into parameters of relative displacement of the substrate and the nozzles, selective control of the nozzles and repetition of offset passage of the substrate in front of the nozzles to produce if necessary contiguous lines.

Le poste suivant de la machine de projection est le four (7) de séchage. Le four (7) permet de sécher complètement ou partiellement le produit projeté. Le séchage, en fonction du produit appliqué, peut être réalisé par un rayonnement infra rouge dans le cas d'un vernis aqueux ou par un courant d'air chauffé pour une colle ou une encre grattable ou par UV en fonction du produit projeté. Le séchage permet ensuite au substrat (13) d'être stocké dans le magasin (8) de sortie, sans que le produit projeté ne se transfère sur d'autres substrats (13) ou sur le magasin (8) avec lesquels le substrat (13) est en contact.The next station of the projection machine is the drying oven (7). The oven (7) allows to completely or partially dry the projected product. The drying, depending on the product applied, can be carried out by infrared radiation in the case of an aqueous varnish or by a heated air flow for a glue or a scratch-off ink or by UV in function of the projected product. The drying then allows the substrate (13) to be stored in the outlet magazine (8), without the projected product being transferred to other substrates (13) or to the magazine (8) with which the substrate ( 13) is in contact.

La figure 3 donne des exemples non limitatifs de poses réalisées par projection sur des substrats (13). Ainsi la pose d'une couche de vernis (14) est réalisée sur une face avant ou après une impression. Une couche de vernis occupe par exemple une zone sur le substrat quasiment rectangulaire, dont les coins sont arrondis. De manière non limitative, une marge non recouverte de produit projeté est laissée sur le pourtour de la face du substrat. Sur une zone (16, figure 3) d'un substrat une couche de colle réactivable thermiquement est réalisée, selon un motif, par exemple de petit rectangle arrondi en ses coins. Des motifs différents d'encre grattable (15) sont posés sur d'autres zones, comme par exemple une flèche, une étoile ou tout autre motif comportant, de manière non limitative, un contour formé d'angles et de lignes droites et/ou de courbes.The figure 3 gives non-limiting examples of poses made by projection onto substrates (13). Thus the laying of a layer of varnish (14) is performed on a front face or after printing. For example, a layer of varnish occupies an area on the almost rectangular substrate, the corners of which are rounded. In a nonlimiting manner, a margin not covered with projected product is left on the periphery of the face of the substrate. On an area (16, figure 3 ) a substrate a layer of thermally reactivatable glue is produced in a pattern, for example a small rectangle rounded at its corners. Different patterns of scratch-off ink (15) are placed on other zones, such as for example an arrow, a star or any other pattern including, in a nonlimiting manner, a contour formed of angles and straight lines and / or of curves.

En référence à la figure 4, en disposant deux machines, l'une (1A) avant l'impression, l'autre (1 B) après l'impression et en chargeant les réservoirs de ces machines avec les produits visqueux appropriés différentes impressions sont réalisées, de manière non limitative, sur deux faces d'un substrat. Ces impressions sont, par exemple, des zones imprimées et protégées par un vernis, des zones imprimées et recouvertes d'une encre grattable ou des zones encollées ou encore une combinaison de ces différentes possibilités sur n'importe quelle face. L'impression sur les différentes faces est réalisée par un mécanisme de retournement (non représenté) entre une machine et la machine suivante ou précédente.With reference to the figure 4 , by arranging two machines, one (1A) before printing, the other (1B) after printing and loading the tanks of these machines with the appropriate viscous products, different impressions are made, in a nonlimiting manner on two sides of a substrate. These prints are, for example, areas printed and protected by a varnish, printed areas and covered with a scratch-resistant ink or glued areas or a combination of these different possibilities on any face. Printing on the different faces is performed by a turning mechanism (not shown) between a machine and the next or previous machine.

La commande électro-acoustique permet de régler la projection de matière en durée et en puissance. Les zones de pose sont alors définies par ce procédé numérique avec une précision de l'ordre de 0,1mm. La machine peut donc poser un point ou encore de recouvrir toute la surface d'un substrat. La zone de pose est définie pour chaque substrat par un fichier de paramétrage concernant la forme de la zone, sa position sur le substrat par rapport aux repères du substrat, la quantité de produit à projeter. Un logiciel de commande de la machine exploite ces informations pour les traduire en paramètres de déplacement relatif du substrat et des buses, en paramètres de commande sélective des buses et en paramètres de réitération de passage décalé du substrat devant les buses pour produire si nécessaire des lignes jointives.The electro-acoustic control adjusts the projection of material in duration and power. The laying areas are then defined by this digital method with an accuracy of the order of 0.1 mm. The machine can therefore pose a point or to cover the entire surface of a substrate. The laying area is defined for each substrate by a file of parameterization concerning the shape of the zone, its position on the substrate relative to the reference points of the substrate, the quantity of product to be sprayed. A machine control software uses this information to translate them into parameters of relative displacement of the substrate and the nozzles, into selective nozzle control parameters, and into repeated flow reiteration parameters of the substrate in front of the nozzles to produce lines if necessary. contiguous.

Dans un autre exemple de réalisation, la chaîne de travail comporte d'autre poste de travail additionnel permettant par exemple l'assemblage de différentes pièces entre elles, dans le cas d'une application de colle sur des zones de contact déterminées.

  • Il doit être évident pour les personnes versées dans l'art que la présente invention permet des modes de réalisation sous de nombreuses autres formes spécifiques sans l'éloigner du domaine d'application de l'invention comme revendiqué. Par conséquent, les présents modes de réalisation doivent être considérés à titre d'illustration, mais peuvent être modifiés dans le domaine défini par la portée des revendications jointes, et l'invention ne doit pas être limitée aux détails donnés ci-dessus.
In another exemplary embodiment, the working line comprises another additional workstation allowing for example the assembly of different parts together, in the case of an application of glue on specific contact areas.
  • It should be obvious to those skilled in the art that the present invention allows embodiments in many other specific forms without departing from the scope of the invention as claimed. Therefore, the present embodiments should be considered by way of illustration, but may be modified within the scope defined by the scope of the appended claims, and the invention should not be limited to the details given above.

Claims (13)

Machine numérique à jet de vernis pour pose d'un revêtement sur une zone de pose d'une face d'un substrat (13) comprenant un magasin d'entrée (5) et un magasin de sortie (8), un moyen informatique (10) de gestion des opérations sur chacun des postes de travail, un moyen de déplacement du substrat entre les différents postes de travail un moyen (4) de préhension et de transfert du substrat (13), du magasin d'entrée vers le moyen de déplacement et du moyen de déplacement vers le magasin de sortie, caractérisé en ce qu'elle comporte au moins : - un poste de lecture (6) qui lit et détermine au moins une position du substrat et/ou de repères marqués sur le substrat, - au moins un poste de pose (2, 9, 10, 11, 12) du vernis composé au moins d'une série de buses (12) agencées selon une rampe, chaque buse étant pilotée séparément par des moyens de commandes, et alimentée par un réservoir (9) relié à un dispositif de mise sous pression contenant le vernis à projeter par les buses sur le substrat pendant un déplacement relatif entre le substrat et le poste de pose, pour effectuer la pose du vernis dans la zone de pose déterminée du substrat, les buses étant mises en vibration chacune par un actionneur piézoélectrique, l'excitation de l'actionneur en durée et puissance déterminant la dimension et la forme de la goutte de vernis ; - un poste de séchage (7) comportant un four de séchage ;
le contrôle des moyens de commande du poste de pose en fonction de la position du substrat, du poste de lecture et du poste de séchage et/ou la gestion des informations fournies par des capteurs des différents postes de travail pour coordonner les opérations étant effectué par les moyens informatiques de gestion en fonction d'un fichier de paramétrage concernant la forme de la zone, sa position sur le substrat par rapport aux repères du substrat, la quantité de vernis à projeter, un logiciel de commande de la machine exploitant ces informations pour les traduire en paramètres de déplacement relatif du substrat et des buses, et de commande sélective des buses.
Digital varnish jet machine for laying a coating on a laying area of a face of a substrate (13) comprising an input magazine (5) and an output magazine (8), a computer means ( 10) for managing the operations on each of the workstations, a means for moving the substrate between the various workstations means (4) for gripping and transferring the substrate (13), from the input magazine to the means of displacement and displacement means to the output magazine, characterized in that it comprises at least: a reading station (6) which reads and determines at least one position of the substrate and / or markings marked on the substrate, - at least one laying station (2, 9, 10, 11, 12) of the varnish composed of at least one series of nozzles (12) arranged in a ramp, each nozzle being driven separately by control means, and fed by a reservoir (9) connected to a pressurizing device containing the varnish to be sprayed by the nozzles onto the substrate during a relative displacement between the substrate and the laying station, in order to carry out the application of the varnish in the determined laying zone of the substrate, the nozzles being each vibrated by a piezoelectric actuator, the excitation of the actuator in duration and power determining the size and shape of the varnish drop; - a drying station (7) comprising a drying oven;
the control of the control means of the laying station as a function of the position of the substrate, the reading station and the drying station and / or the management of the information provided by the sensors of the different workstations to coordinate the operations being carried out by the computerized management means according to a parameter file concerning the shape of the zone, its position on the substrate relative to the reference points of the substrate, the quantity of varnish to be sprayed, a control software of the machine using this information for translate them into relative displacement parameters of the substrate and nozzles, and selective nozzle control.
Machine selon la revendication 1, caractérisée en ce que la rampe dans laquelle sont agencées les buses est munie d'un moyen de déplacement (3) par rapport au support et le logiciel de commande réitère si nécessaire un passage décalé du substrat devant les buses pour produire si nécessaire des lignes jointives.Machine according to claim 1, characterized in that the ramp in which the nozzles are arranged is provided with a displacement means (3) relative to the support and the control software repeats, if necessary, an offset passage of the substrate in front of the nozzles for produce, if necessary, joined lines. Machine selon une des revendications 1 à 2, caractérisée en ce que le lieu de projection sur le substrat est défini par le déplacement relatif du substrat par rapport à la rampe dans laquelle sont agencées les buses.Machine according to one of claims 1 to 2, characterized in that the projection location on the substrate is defined by the relative displacement of the substrate relative to the ramp in which the nozzles are arranged. Machine selon une des revendications précédentes, caractérisée en ce qu'elle comporte en amont ou en aval du poste de vernis, un poste autonome d'impression.Machine according to one of the preceding claims, characterized in that it comprises, upstream or downstream of the varnish station, an autonomous printing station. Machine selon la revendication précédente, caractérisée en ce qu'elle comporte en amont ou en aval du poste de pose de vernis, un poste de mise en place d'une puce électronique sur le substrat.Machine according to the preceding claim, characterized in that it comprises upstream or downstream of the varnish station, a station for placing an electronic chip on the substrate. Machine selon la revendication 4 ou 5, caractérisée en ce qu'elle comporte - un deuxième poste de pose (2, 9, 10, 11, 12) d'un produit visqueux composé au moins d'une série de buses (12) agencées selon une rampe, chaque buse étant pilotée séparément par des moyens de commandes, et alimentée par un réservoir (9) relié à un dispositif de mise sous pression contenant du produit visqueux à projeter par les buses sur le substrat pendant un déplacement relatif entre le substrat et le poste de pose, pour effectuer la pose du produit visqueux dans une zone déterminée du substrat, les buses étant mises en vibration chacune par un actionneur piézoélectrique, l'excitation de l'actionneur en durée et puissance déterminant la dimension et la forme de la goutte de produit visqueux; - un poste de séchage (7) comportant un four de séchage déterminé en fonction du produit appliqué;
le contrôle des moyens de commande du poste de pose en fonction de la position du substrat, du poste de lecture et du poste de séchage et/ou la gestion des informations fournies par des capteurs des différents postes de travail pour coordonner les opérations étant effectué par les moyens informatiques de gestion en fonction d'un fichier de paramétrage concernant la forme de la zone, sa position sur le substrat par rapport aux repères du substrat, la quantité de produit à projeter, un logiciel de commande de la machine exploitant ces informations pour les traduire en paramètres de déplacement relatif du substrat et des buses, et de commande sélective des buses.
Machine according to claim 4 or 5, characterized in that it comprises a second laying station (2, 9, 10, 11, 12) of a viscous product composed of at least one series of nozzles (12) arranged along a ramp, each nozzle being controlled separately by control means, and fed by a reservoir (9) connected to a pressurizing device containing viscous material to be sprayed from the nozzles onto the substrate during relative movement between the substrate and the dispensing station, to perform the laying of the viscous product in a determined zone of the substrate, the nozzles being each vibrated by a piezoelectric actuator, the excitation of the actuator in duration and power determining the size and shape of the drop of viscous product; - a drying station (7) comprising a drying oven determined according to the product applied;
the control of the control means of the laying station as a function of the position of the substrate, the reading station and the drying station and / or the management of the information provided by the sensors of the different workstations to coordinate the operations being carried out by the computerized management means according to a parameter file concerning the shape of the zone, its position on the substrate relative to the reference marks of the substrate, the quantity of product to be sprayed, a control software of the machine using this information for translate them into relative displacement parameters of the substrate and nozzles, and selective nozzle control.
Machine selon une des revendications 4 à 6, caractérisée en ce que le produit est une colle et le séchage est à courant d'air chauffé.Machine according to one of claims 4 to 6, characterized in that the product is a glue and the drying is heated air flow. Machine selon une des revendications 4 à 6, caractérisée en ce que, le produit est un vernis aqueux et le séchage est à infra rouge.Machine according to one of Claims 4 to 6, characterized in that the product is an aqueous lacquer and the drying is infra-red. Machine selon une des revendications 4 à 6, caractérisée en ce que, le produit est une encre opaque grattable et le séchage est à courant d'air chauffé.Machine according to one of Claims 4 to 6, characterized in that the product is an opaque, scratch-resistant ink and the drying is heated with a stream of air. Machine selon une des revendications 4 à 6, caractérisée en ce que le produit est une encre conductrice.Machine according to one of Claims 4 to 6, characterized in that the product is a conductive ink. Machine selon une des revendications 4 à 10, caractérisée en ce qu'entre le premier poste de pose et le second poste de pose est disposé un mécanisme de retournement.Machine according to one of Claims 4 to 10, characterized in that a reversing mechanism is arranged between the first station and the second station. Machine selon une des revendications 1 à 11, caractérisée en ce que au moins une face du substrat est un plastique et le produit visqueux est adapté pour un tel substrat.Machine according to one of claims 1 to 11, characterized in that at least one face of the substrate is a plastic and the viscous product is suitable for such a substrate. Machine selon une des revendications 1 à 11, caractérisée en ce que le substrat est du papier avec une impression effectuée avant l'application du produit visqueux.Machine according to one of claims 1 to 11, characterized in that the substrate is paper with an impression made before application of the viscous product.
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ATE550195T1 (en) 2012-04-15
US7332037B2 (en) 2008-02-19
ES2393659T3 (en) 2012-12-27
SI2221183T1 (en) 2012-12-31
US20070064030A1 (en) 2007-03-22
ES2384465T3 (en) 2012-07-05
CZ20906U1 (en) 2010-05-24
EP1749670B1 (en) 2012-03-21
PL2221183T3 (en) 2013-02-28
SI1749670T1 (en) 2012-08-31
FR2886880A1 (en) 2006-12-15
USRE45067E1 (en) 2014-08-12
PT1749670E (en) 2012-06-01
FR2886880B1 (en) 2008-10-03
DE202006020789U1 (en) 2010-03-04
DE06290969T1 (en) 2010-01-28
DK2221183T3 (en) 2012-11-19
DK1749670T3 (en) 2012-07-09
PT2221183E (en) 2012-11-12
EP2221183B1 (en) 2012-09-12
EP1749670A1 (en) 2007-02-07

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