EP1749670B1 - Fluid ejection machine for coating deposition - Google Patents

Fluid ejection machine for coating deposition Download PDF

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Publication number
EP1749670B1
EP1749670B1 EP06290969A EP06290969A EP1749670B1 EP 1749670 B1 EP1749670 B1 EP 1749670B1 EP 06290969 A EP06290969 A EP 06290969A EP 06290969 A EP06290969 A EP 06290969A EP 1749670 B1 EP1749670 B1 EP 1749670B1
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EP
European Patent Office
Prior art keywords
substrate
machine
station
application
product
Prior art date
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EP06290969A
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German (de)
French (fr)
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EP1749670A1 (en
Inventor
Edmond Abergel
Raphaël Renaud
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MGI Digital Technology SA
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MGI France SA
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Priority to PL06290969T priority Critical patent/PL1749670T3/en
Priority to DK10162957.4T priority patent/DK2221183T3/en
Priority to PL10162957T priority patent/PL2221183T3/en
Priority to SI200631318T priority patent/SI1749670T1/en
Priority to DE202006020789U priority patent/DE202006020789U1/en
Application filed by MGI France SA filed Critical MGI France SA
Priority to EP10162957A priority patent/EP2221183B1/en
Publication of EP1749670A1 publication Critical patent/EP1749670A1/en
Publication of EP1749670B1 publication Critical patent/EP1749670B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices 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
    • B41J11/0015—Devices 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
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices 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
    • B41J11/0015—Devices 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
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00216—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using infrared [IR] radiation or microwaves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices 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
    • B41J11/0015—Devices 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
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0022—Curing 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements

Definitions

  • 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 Viscosity application, up to 1000 centipoise (mPas), and rated medium to high, such as varnish, glue, conductive or scratch-off ink, on a thick substrate and of variable size.
  • Viscosity application up to 1000 centipoise (mPas)
  • rated medium to high such as varnish, glue, conductive or scratch-off ink
  • 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
  • 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). ).
  • the machine is controlled by a control computer (10) (ie, one or more computer management means) 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 a nature, of thickness up to 800 ⁇ m and of variable size (credit card format up to A0). 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 tank are varnish, scratch-off ink, conductive ink or glue whose average viscosities are between 100 and 1000 centipoise (mPas), ie much higher viscosities printing inks that are normally about ten 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.
  • 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 are all controlled individually 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. 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 UV depending on the product projected.
  • 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 made on a front side 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 thermally reactivatable glue layer 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 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 amount 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.
  • 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.

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

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 (mPas), 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 Viscosity application, up to 1000 centipoise (mPas), and rated medium to high, such as varnish, glue, conductive or scratch-off ink, on a thick substrate and of variable size.

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 (mPas).There are inkjet printing systems operating with inks whose viscosity is low and of the order of ten centipoises (mPas).

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 the laying complex on only a portion of surface of the substrate.

Il est également connu de l'art antérieur, le document WO03/099456 divulguant des machines selon le préambule de la revendication 1.It is also known from the prior art, the document WO03 / 099456 disclosing machines according to the preamble of claim 1.

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 selon la revendication 1.This objective is achieved by means of a machine according to claim 1.

D'autres particularités et avantages des machines selon certains modes de réalisation de l'invention sont présentés dans les revendications dépendantes de la revendication 1.Other features and advantages of the machines according to certain embodiments of the invention are presented in the dependent claims of claim 1.

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 selon la revendication 10.This object is achieved by the use of a machine according to the invention used according to claim 10.

D'autres particularités et avantages d'une utilisation selon certains modes de réalisation de l'invention sont présentés dans les revendications dépendantes de la revendication 10.Other features and advantages of use according to some embodiments of the invention are presented in the dependent claims of claim 10.

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) (i.e., un ou des moyen(s) informatique(s) de gestion) 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 800µm 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) (ie, one or more computer management means) 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 a nature, of thickness up to 800 μm and of variable size (credit card format up to A0). 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 le viscosités moyennes sont comprises entre 100 et 1000 centipoises (mPas) 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. 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 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 tank are varnish, scratch-off ink, conductive ink or glue whose average viscosities are between 100 and 1000 centipoise (mPas), ie much higher viscosities printing inks that are normally about ten 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. 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, are all controlled individually 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. 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 UV depending on the product projected. 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 réalisé 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 réalisé, 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 made on a front side 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 thermally reactivatable glue layer 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 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 amount 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.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.

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.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)

  1. Digital machine producing a jet of viscous material for the application of a coating to a plastic face of a substrate (13), comprising:
    - a reservoir containing viscous product having a viscosity of less than 1000 centipoises (mPas),
    - an input magazine (5) and an output magazine (8),
    - a management computer means (10),
    - a means for movement of the substrate between the different work stations,
    - a means (4) for gripping and transferring the substrate (13) from the input magazine to the movement means and from the movement means to the output magazine,
    - a mechanism for determination of the position of the substrate,
    - an application station (2, 9, 11, 12) composed of at least a series of hollow needles of which the ends constitute nozzles (12) arranged in a ramp, each hollow needle being actuated separately by command means and supplied by the said reservoir (9) containing the viscous product to be protected onto the substrate during a relative movement between the substrate and the application station, in order to effect the application of the product in a defined zone on the substrate, the hollow needles each being made to vibrate by a piezoelectric actuator adhered to a resonator formed by the assembly of each hollow needle in a ramp,
    - a drying station (7) including a drying oven;
    characterised in that;
    - the mechanism for determination of the position of the substrate is formed by a read station (6) which reads and determines at least one position of the substrate or of markers placed on the substrate,
    - the drying oven is an infra-red or heated air current or UV drying oven,
    - the application station (2, 9, 11, 12) is arranged in such a way that the excitation of the actuator in terms of duration and powder determines the dimension and the shape of the drop of viscous material,
    - the management computer means (10) controls, as a function of an established programming file:
    the command means of the application station, as a function of the position of the substrate, the read station and the drying station,
    or
    management of the information collected at the different work stations in order to coordinate the operations on each of the stations.
  2. Digital machine producing a jet of viscous material for the application of a coating to a plastic face of a substrate (13) as claimed in Claim 1, characterised in that the reservoir (9) contains viscous product having a viscosity of between 10 and 1000 centipoises.
  3. Machine as claimed in Claim 1, characterised in that the application zone is defined for each substrate by a parameterisation file concerning the shape of the zone, its position on the substrate relative to the substrate markers, the quantity of product to be projected, with a machine control program making use of this information in order to translate it into parameters of relative movement of the substrate and of the nozzles, for selective control of the nozzles and for reiteration of the offset passage of the substrate in front of the nozzles in order to produce joined-up lines if necessary
  4. Machine as claimed in Claim 1 or Claim 3, characterised in that the ramp in which the nozzles are arranged is equipped with a means for movement (3) relative to the support.
  5. Machine as claimed in any one of Claims 1 to 4, characterised in that the projection location on the substrate is defined by the relative movement of the substrate with respect to the ramp on which the nozzles are arranged.
  6. Machine as claimed in any ane of Claims 1 to 5, characterised in that it includes a device for pressuring the product to be projected which supplies the needles.
  7. Machine as claimed in any one of Claims 1 to 6, characterised in that the product is an adhesive and the drying is by heated air current.
  8. Machine as claimed in any one of Claims 1 to 6, characterised in that the product is an aqueous varnish and the drying is by infra-red.
  9. Machine as claimed in any one of Claims 1 to 6, characterised in that the product is a scratchable opaque ink and the drying is by heated air current.
  10. Use of at least one first machine as claimed in Claim 7 or a second machine as claimed in Claim 8, characterised in that at least one of the machines is used upstream or downstream of an independent printing station or of a station for the installation of an electronic chip on the substrate.
  11. Use of a machine as claimed in Claim 10, characterised in that the first machine is used upstream of the printing station for the application of adhesive in a zone different from that receiving the printing, and the second machine is used downstream of the printing station for the application of a varnish on the printed part.
  12. Use of a machine as claimed in Claim 10, characterised in that the second machine is used upstream of the printing station for the application of varnish in a zone different from the zone receiving the printing, and the first machine is used downstream of the printing station for the application of adhesive in a third zone.
  13. Use of a machine as claimed in Claim 10, characterised in that the first machine is used upstream of the station for the installation of an electronic chip on the substrate for the application of adhesive in the zone intended to receive the chip.
EP06290969A 2005-06-14 2006-06-14 Fluid ejection machine for coating deposition Active EP1749670B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DK10162957.4T DK2221183T3 (en) 2005-06-14 2006-06-14 Digital machine for producing a beam for applying a coating to a substrate
PL10162957T PL2221183T3 (en) 2005-06-14 2006-06-14 Fluid ejection machine for coating deposition
SI200631318T SI1749670T1 (en) 2005-06-14 2006-06-14 Fluid ejection machine for coating deposition
DE202006020789U DE202006020789U1 (en) 2005-06-14 2006-06-14 Liquid ejection device for coating
PL06290969T PL1749670T3 (en) 2005-06-14 2006-06-14 Fluid ejection machine for coating deposition
EP10162957A EP2221183B1 (en) 2005-06-14 2006-06-14 Fluid ejection machine for coating deposition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0505981A FR2886880B1 (en) 2005-06-14 2005-06-14 DIGITAL JET MACHINE FOR REMOVING A COATING ON A SUBSTRATE

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EP10162957.4 Division-Into 2010-05-17

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DE (2) DE06290969T1 (en)
DK (2) DK2221183T3 (en)
ES (2) ES2393659T3 (en)
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PL (2) PL1749670T3 (en)
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DK1749670T3 (en) 2012-07-09
EP1749670A1 (en) 2007-02-07
ES2384465T3 (en) 2012-07-05
US7332037B2 (en) 2008-02-19
DE06290969T1 (en) 2010-01-28
DE202006020789U1 (en) 2010-03-04
DK2221183T3 (en) 2012-11-19
PT1749670E (en) 2012-06-01
SI1749670T1 (en) 2012-08-31
EP2221183B1 (en) 2012-09-12
PL2221183T3 (en) 2013-02-28
FR2886880B1 (en) 2008-10-03
USRE45067E1 (en) 2014-08-12
PT2221183E (en) 2012-11-12
PL1749670T3 (en) 2012-08-31
ES2393659T3 (en) 2012-12-27
ATE550195T1 (en) 2012-04-15
FR2886880A1 (en) 2006-12-15
EP2221183A1 (en) 2010-08-25
CZ20906U1 (en) 2010-05-24
US20070064030A1 (en) 2007-03-22
SI2221183T1 (en) 2012-12-31

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