EP1254769B1 - Pad printing machine equipped with a device for the marking of spectacle lenses - Google Patents

Pad printing machine equipped with a device for the marking of spectacle lenses Download PDF

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Publication number
EP1254769B1
EP1254769B1 EP02354071A EP02354071A EP1254769B1 EP 1254769 B1 EP1254769 B1 EP 1254769B1 EP 02354071 A EP02354071 A EP 02354071A EP 02354071 A EP02354071 A EP 02354071A EP 1254769 B1 EP1254769 B1 EP 1254769B1
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EP
European Patent Office
Prior art keywords
stamp
marking
machine according
marking machine
lenses
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EP02354071A
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German (de)
French (fr)
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EP1254769A1 (en
Inventor
Henri Dominico Demarchi
Joseph Naccarato
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TECOPTIQUE
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TECOPTIQUE
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/001—Pad printing apparatus or machines

Definitions

  • Such a known stamping machine is described in the document US Patent 6123021 . It has several units of inking of different colors, extending side by side in a horizontal plane.
  • the object of the invention is to provide a buffering machine for vision glasses, having a reduced longitudinal footprint, and automatic selection and reliable snapshots that avoids multiple manual replacements at risk of mishandling.
  • the different inking units are identical, and distributed in pairs in equal numbers on two sides of the double magazine, the inking units superimposed on the same side being assigned for the lenses of the right eye, and those on the other side for the glasses of the left eye.
  • the first actuator comprises a geared motor coupled to a screw-and-nut movement transformation mechanism extending in a vertical direction, the bidirectional drive direction of the magazine at the ascent or descent being controlled by inverting the motor supply.
  • the second actuator comprises a gripping jack for gripping two selected plates, and a jack actuating device for horizontally pushing the pictures between two horizontal positions adapted to the exit and the return of the shots.
  • the work table is equipped with a support slide of a pair of glasses for the left eye and the right eye, respectively, two suction grippers being provided for holding by depression. glasses during transfer and buffering operations.
  • a stamping machine 10 for viewing glasses comprises a fixed frame 12 on which a mobile frame 14 of a magazine 16 intended to store a plurality of units is slidably mounted vertically. inking 18.
  • the vertical displacement of the magazine 16 is operated by means of a first actuator 20 comprising a geared motor 22 coupled to a screw-shaped motion transformation mechanism 24 and nut 26.
  • the screw 24 extends in a vertical direction, and the direction bidirectional drive of the magazine 16 on the up or down is controlled by inverting the motor supply.
  • the various inking units 18 are identical and distributed at regular intervals and in equal number pairs on two sides of the double magazine 16.
  • the various inking units 18 superimposed on the same side are assigned for the glasses of the right eye, and those on the other side for the glasses of the left eye.
  • Each inking unit 18 is composed of an engraved plate 28, a movable plate support 30 mounted on horizontal guide rails, a fixed ink 32 mounted on an ink carrier 34.
  • the etched plate 28 is formed by a stainless steel plate in the upper face of which were made engravings representative of the marks to be affixed to the glasses.
  • the ink fountain 32 is filled with ink, and the open orifice is mounted in reverse position on the etched upper part of the plate 28.
  • the open orifice of the ink fountain 32 is delimited by an annular flange equipped with a scraper segment. (not shown) intended to take support on the plate 28.
  • the fixed frame 12 also carries a working table 36 arranged horizontally in front of the magazine 16, and connected by two horizontal crosspieces 38 to the frame 12.
  • the work table 36 is equipped with a slide 39 for supporting a pair of glasses OG and OD for the left eye and the right eye respectively.
  • a jack 40 makes it possible to move the slider 39 between a rest position (in strong lines in FIG. 9) enabling the appropriate glasses to be put in place, and a working position adapted to buffering (see arrow F, FIG. 8).
  • the positioning zones A and B indicated in dashed lines in FIG. 8 on the work table 36 correspond to the buffering.
  • the slider 39 further comprises two gripping elements 42 with suction cups for the vacuum retention of the OG and OD glasses during the transfer and buffering operations.
  • the buffering device 44 associated with a vision system 46 with two CDD cameras.
  • the buffering device 44 is fixed to the frame 12 by two cross members 47, and comprises a pair of buffers 48 in silicone, intended to recover the ink of the plate 28, and to restore it on the glasses OG and OD.
  • Each pad 48 is actuated in the direction of the height by means of a cylinder 50 movable between a low position and a raised position ( Figures 9 and 9A).
  • the CDD camera of the vision system 46 is fixed by an arm 52 to the buffering device 44, so as to be positioned just above the gripping elements 42 with suckers when the latter are in the rest position.
  • Such a system known per se allows the detection of the hidden marking on OG and OD glasses and manual positioning.
  • the selection of one or the pair of inking units 18 of a predetermined level of the magazine 16 is fully automated by means of a keyboard (not shown) associated with a machine-integrated machine 10 for the input measurement and control parameters.
  • a keyboard not shown
  • a bar code reader or an external control unit, for example a computer.
  • the inking step of the plates 28 takes place following a relative displacement in horizontal translation with respect to the corresponding inkwells 32.
  • the translational movement of a pair of plates 28 is effected by means of a second actuator 54 comprising a gripping jack 56 for gripping the two selected plates 28, and an actuating jack 58 intended to push the plates 28 horizontally. between two positions C and D ( Figure 9).
  • the attachment cylinder 56 (FIG. 7) comprises a hinged clamp 60 connected to a movable yoke 62 of the jack, and provided at its opposite end with a jaw 64 intended to grip the movable plate support 30.
  • the actuating cylinder 58 is disposed above the attachment cylinder 56, and pushes the pair of plates 28 during the closing of the jaw 64, until the engraved part of the plates 28 slides outside the The inkcuts are then filled with ink, and the ink transfer to OD, OG glasses to be buffered can then be operated.
  • FIGS. 10 to 18 The different buffering steps are illustrated in FIGS. 10 to 18:
  • the plates 28 are in position C, the orifice of the ink fountain 32 being in front of the etched part.
  • the OD straight glass is held by vacuum on the left suction cup.
  • the correct positioning of the glass on the gripping element 42 is controlled by the CDD camera of the vision system 46 which displays to an LCD screen the markings hidden on the glass. Then intervenes the positioning of the left lens OG on the right suction cup, followed by the depression lock with the same positioning control by means of the vision system 46.
  • the second actuator 54 pushes toward the position D and allows the output of the pair of selected plates 28 (only one is visible).
  • the engraved part of the plates 28 is in the open air, and only the engravings are filled with ink.
  • the two buffers 48 are actuated by the two jacks 50 towards the low position, in order to recover the ink stored in the engravings of the two plates 28, these latter are always in the position D.
  • the attachment cylinder 56 of the second actuator 54 causes the plates to return to the position C, positioning the etched part under the inkwells 32.
  • the jack 40 causes the slide 39 to move on the work table 36, to position the two glasses OG, OD under the two buffers 48.
  • the two buffers 48 are actuated by the two jacks 50 towards the low position, and make the marking on the two glasses OG, OD.
  • the cylinder 40 causes the return of the slider 39 on the work table 36, to position the two glasses OG, OD in the original position.
  • the depression in the gripping elements 42 is interrupted, followed by the recovery of the buffered glasses.
  • the embodiment described above relates to a double vertical store 16 for simultaneously working the two glasses OD, OG on the work table 36.

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  • Printing Methods (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Eyeglasses (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Road Signs Or Road Markings (AREA)
  • Adornments (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Dot-Matrix Printers And Others (AREA)

Abstract

The marker (10), especially for spectacle lenses, consists of inking units (18) with engraved plates, inkers, marking pads, a working table (36) with suction grippers 42) and a viewer (46). It has a series of inking units (18) set at regular vertical intervals along a magazine (16) which slides vertically on a fixed frame (12), a first actuator (20) to position at least one inking unit at a predetermined level between the working table and viewer, and a second actuator to provide relative movement of a selected plate in relation to an inker.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention est relative à une machine de tamponnage, notamment pour des verres de vision, comportant:

  • une pluralité d'unités d'encrage comprenant chacune un cliché gravé avec une rainure spécifique et un encrier rempli d'encre monté en position renversée sur la partie supérieure du cliché,
  • un dispositif de tamponnage ayant un tampon pour récupérer l'encre stockée dans la gravure du cliché de l'unité d'encrage sélectionnée correspondante et l'apposer sur les verres.
  • une table de travail équipée d'éléments de préhension pour les verres à tamponner,
  • des moyens de commande des différents cycles de tamponnage des verres,
  • et un deuxième actionneur assurant un déplacement relatif du cliché de l'unité d'encrage sélectionnée par rapport à l'encrier fixe pour assurer le transfert d'encre de la gravure du cliché vers le tampon correspondant.
The invention relates to a buffering machine, especially for vision glasses, comprising:
  • a plurality of inking units each comprising an engraved plate with a specific groove and an ink filled inkwell mounted in reverse position on the upper part of the plate,
  • a buffering device having a buffer for recovering the ink stored in the engraving of the plate of the corresponding selected inking unit and affixing it to the glasses.
  • a work table equipped with gripping elements for the glasses to be stamped,
  • control means for the different lens buffering cycles,
  • and a second actuator ensuring a relative displacement of the selected ink unit plate relative to the fixed ink filler to ensure the transfer of ink from the engraving of the plate to the corresponding buffer.

Etat de la techniqueState of the art

II existe de plus en plus de types de verres à vision progressive, avec des dessins ou des marquages différents qui nécessitent une multitude de clichés.There are more and more types of progressive vision glasses, with different designs or markings that require a multitude of shots.

Une telle machine de tamponnage connue est décrite dans le document US-A-6123021 . Elle comporte plusieurs unités d'encrage de couleurs différentes, s'étendant côte à côte dans un plan horizontal.Such a known stamping machine is described in the document US Patent 6123021 . It has several units of inking of different colors, extending side by side in a horizontal plane.

D'autres machines de tamponnage connues pour le marquage des verres de vision nécessitent un changement manuel des clichés pour chaque type de verres. Il en résulte des manipulations multiples, qui rallongent les temps de préparation, et imposent une grande attention visuelle lors du choix des clichés.Other buffering machines known for marking vision glasses require a manual change of photos for each type of glasses. This results in multiple manipulations, which lengthen preparation time, and require great visual attention when choosing shots.

Il existe également des machines de tamponnage à clichés multiples, et automatisées par un robot contrôlé par un ordinateur. L'encombrement longitudinal est important, et il n'est pas possible de travailler simultanément sur les deux verres de l'oeil gauche et de l'oeil droit.There are also multiple-plate buffering machines, and automated by a computer-controlled robot. The longitudinal congestion is important, and it is not possible to work simultaneously on the two glasses of the left eye and the right eye.

Objet de l'inventionObject of the invention

L'objet de l'invention consiste à réaliser une machine de tamponnage pour des verres de vision, ayant un encombrement longitudinal réduit, et à sélection automatique et fiable des clichés qui évite les remplacements multiples manuels risquant de mauvaises manipulations.The object of the invention is to provide a buffering machine for vision glasses, having a reduced longitudinal footprint, and automatic selection and reliable snapshots that avoids multiple manual replacements at risk of mishandling.

Le dispositif selon l'invention est caractérisé en ce que:

  • un système de vision est placé au-dessus de la table de travail pour la détection du marquage caché et le positionnement correct des verres avant le tamponnage,
  • les éléments de préhension fonctionnent à dépression.
  • les unités d'encrage sont réparties et stockées verticalement à intervalles réguliers le long d'un magasin, lequel est monté à coulissement vertical sur un châssis fixe,
  • et un premier actionneur assure la montée et la descente du magasin pour positionner une unité d'encrage à un niveau prédéterminé situé entre la table de travail et le système de vision.
The device according to the invention is characterized in that:
  • a vision system is placed above the work table for the detection of the hidden marking and the correct positioning of the glasses before buffering,
  • the gripping elements operate at a depression.
  • the inking units are distributed and stored vertically at regular intervals along a magazine, which is mounted vertically sliding on a fixed frame,
  • and a first actuator raises and lowers the magazine to position an ink unit at a predetermined level between the work table and the vision system.

Selon une caractéristique de l'invention, les différentes unités d'encrage sont identiques, et réparties par paires en nombre égal sur deux côtés du magasin double, les unités d'encrage superposées d'un même côté étant affectées pour les verres de l'oeil droit, et celles de l'autre côté pour les verres de l'oeil gauche.According to a characteristic of the invention, the different inking units are identical, and distributed in pairs in equal numbers on two sides of the double magazine, the inking units superimposed on the same side being assigned for the lenses of the right eye, and those on the other side for the glasses of the left eye.

Selon une caractéristique de l'invention, le premier actionneur comporte un motoréducteur accouplé à un mécanisme de transformation de mouvement à vis et écrou s'étendant selon une direction verticale, le sens d'entraînement bidirectionnel du magasin à la montée ou à la descente étant commandé par inversion de l'alimentation du moteur.According to one characteristic of the invention, the first actuator comprises a geared motor coupled to a screw-and-nut movement transformation mechanism extending in a vertical direction, the bidirectional drive direction of the magazine at the ascent or descent being controlled by inverting the motor supply.

Selon une autre caractéristique de l'invention, le deuxième actionneur comporte un vérin d'accrochage pour la préhension de deux clichés sélectionnés, et un vérin d'actionnement destiné à pousser horizontalement les clichés entre deux positions horizontales adaptées à la sortie et à la rentrée des clichés.According to another characteristic of the invention, the second actuator comprises a gripping jack for gripping two selected plates, and a jack actuating device for horizontally pushing the pictures between two horizontal positions adapted to the exit and the return of the shots.

Selon un mode de réalisation préférentiel, la table de travail est équipée d'un coulisseau de support d'une paire de verres pour l'oeil gauche et l'oeil droit respectivement, deux éléments de préhension à ventouses étant prévus pour le maintien par dépression des verres lors des opérations de transfert et de tamponnage.According to a preferred embodiment, the work table is equipped with a support slide of a pair of glasses for the left eye and the right eye, respectively, two suction grippers being provided for holding by depression. glasses during transfer and buffering operations.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif, et représenté aux dessins annexés, dans lesquels:

  • la figure 1 est une vue en élévation de la machine de tamponnage selon l'invention;
  • la figure 2 montre une vue de profil de la machine de la figure 1;
  • la figure 3 représente une vue en plan de la figure 1;
  • la figure 4 représente une vue en plan de la figure 2;
  • la figure 5 est une vue de profil du châssis de la machine;
  • la figure 6 est une vue arrière de la figure 1, le magasin étant représenté en pointillé dans la position de fin de course haute;
  • la figure 7 montre deux vues du vérin d'accrochage du deuxième actionneur, le mors de la pince étant représenté en position débloquée dans la demi-vue supérieure, et dans la position agrippée dans la demi-vue inférieure de la vue inférieure;
  • les figures 8 à 9A sont respectivement des vues en plan, de profil et en élévation du dispositif de tamponnage sur la table de travail;
  • les figures 10 à 18 montrent les différentes étapes successives de tamponnage des verres.
Other advantages and features will emerge more clearly from the following description of an embodiment of the invention given by way of non-limiting example, and represented in the accompanying drawings, in which:
  • Figure 1 is an elevational view of the stamping machine according to the invention;
  • Figure 2 shows a side view of the machine of Figure 1;
  • Figure 3 shows a plan view of Figure 1;
  • Figure 4 shows a plan view of Figure 2;
  • Figure 5 is a side view of the frame of the machine;
  • Figure 6 is a rear view of Figure 1, the magazine being shown in dashed line in the high end position;
  • Figure 7 shows two views of the attachment cylinder of the second actuator, the jaw of the clamp being shown in the unlocked position in the upper half-view, and in the position gripped in the lower half-view of the lower view;
  • Figures 8 to 9A are respectively plan views, profile and elevation of the buffering device on the work table;
  • Figures 10 to 18 show the different successive steps of buffering glasses.

Description d'un mode de réalisation préférentiel.Description of a Preferred Embodiment

En référence aux figures 1 à 10, une machine de tamponnage 10 pour des verres de vision, comporte un châssis 12 fixe sur lequel est monté à coulissement vertical un cadre mobile 14 d'un magasin 16 destiné au stockage d'une pluralité d'unités d'encrage 18.With reference to FIGS. 1 to 10, a stamping machine 10 for viewing glasses comprises a fixed frame 12 on which a mobile frame 14 of a magazine 16 intended to store a plurality of units is slidably mounted vertically. inking 18.

Le déplacement vertical du magasin 16 est opéré au moyen d'un premier actionneur 20 comprenant un motoréducteur 22 accouplé à un mécanisme de transformation de mouvement à vis 24 et écrou 26. La vis 24 s'étend selon une direction verticale, et le sens d'entraînement bidirectionnel du magasin 16 à la montée ou à la descente est commandé par inversion de l'alimentation du moteur.The vertical displacement of the magazine 16 is operated by means of a first actuator 20 comprising a geared motor 22 coupled to a screw-shaped motion transformation mechanism 24 and nut 26. The screw 24 extends in a vertical direction, and the direction bidirectional drive of the magazine 16 on the up or down is controlled by inverting the motor supply.

Les différentes unités d'encrage 18 sont identiques et réparties à intervalles réguliers et par paires en nombre égal sur deux côtés du magasin 16 double. Les différentes unités d'encrage 18 superposées d'un même côté sont affectées pour les verres de l'oeil droit, et celles de l'autre côté pour les verres de l'oeil gauche.The various inking units 18 are identical and distributed at regular intervals and in equal number pairs on two sides of the double magazine 16. The various inking units 18 superimposed on the same side are assigned for the glasses of the right eye, and those on the other side for the glasses of the left eye.

Chaque unité d'encrage 18 est composée d'un cliché 28 gravé, d'un support de cliché 30 mobile monté sur des rails de guidage horizontal, d'un encrier 32 fixe monté sur un support d'encrier 34.Each inking unit 18 is composed of an engraved plate 28, a movable plate support 30 mounted on horizontal guide rails, a fixed ink 32 mounted on an ink carrier 34.

Le cliché 28 gravé est formé par une plaque d'acier inoxydable dans la face supérieure de laquelle ont été réalisées des gravures représentatives des repères à apposer sur les verres. L'encrier 32 est rempli d'encre, et l'orifice ouvert est monté en position renversée sur la partie supérieure gravée du cliché 28. L'orifice ouvert de l'encrier 32 est délimité par une collerette annulaire dotée d'un segment racleur (non représenté) destiné à prendre appui sur le cliché 28.The etched plate 28 is formed by a stainless steel plate in the upper face of which were made engravings representative of the marks to be affixed to the glasses. The ink fountain 32 is filled with ink, and the open orifice is mounted in reverse position on the etched upper part of the plate 28. The open orifice of the ink fountain 32 is delimited by an annular flange equipped with a scraper segment. (not shown) intended to take support on the plate 28.

Le châssis 12 fixe porte en plus une table de travail 36 agencée horizontalement devant le magasin 16, et reliée par deux traverses 38 horizontales au châssis 12. La table de travail 36 est équipée d'un coulisseau 39 de support d'une paire de verres OG et OD pour l'oeil gauche et l'oeil droit respectivement. Un vérin 40 permet de déplacer le coulisseau 39 entre une position de repos (en traits forts sur la figure 9) permettant la mise en place des verres appropriés, et une position de travail adaptée au tamponnage (voir flèche F figure 8). Les zones de positionnement A et B indiquées en pointillé sur la figure 8 sur la table de travail 36 correspondent au tamponnage. Le coulisseau 39 comporte en plus deux éléments de préhension 42 à ventouses pour le maintien par dépression des verres OG et OD lors des opérations de transfert et de tamponnage.The fixed frame 12 also carries a working table 36 arranged horizontally in front of the magazine 16, and connected by two horizontal crosspieces 38 to the frame 12. The work table 36 is equipped with a slide 39 for supporting a pair of glasses OG and OD for the left eye and the right eye respectively. A jack 40 makes it possible to move the slider 39 between a rest position (in strong lines in FIG. 9) enabling the appropriate glasses to be put in place, and a working position adapted to buffering (see arrow F, FIG. 8). The positioning zones A and B indicated in dashed lines in FIG. 8 on the work table 36 correspond to the buffering. The slider 39 further comprises two gripping elements 42 with suction cups for the vacuum retention of the OG and OD glasses during the transfer and buffering operations.

Au-dessus de la table de travail 36 se trouve le dispositif de tamponnage 44 associé à un système de vision 46 avec deux caméras CDD. Le dispositif de tamponnage 44 est fixé au châssis 12 par deux traverses 47, et comporte une paire de tampons 48 en silicone, destinés à récupérer l'encre du cliché 28, et à la restituer sur les verres OG et OD. Chaque tampon 48 est actionné dans le sens de la hauteur au moyen d'un vérin 50 déplaçable entre une position basse et une position relevée (figures 9 et 9A). La caméra CDD du système de vision 46 est fixée par un bras 52 au dispositif de tamponnage 44, de manière à être positionnée juste au-dessus des éléments de préhension 42 à ventouses lorsque ces derniers se trouvent en position de repos. Un tel système connu en soi permet la détection du marquage caché sur les verres OG et OD et un positionnement manuel.Above the work table 36 is the buffering device 44 associated with a vision system 46 with two CDD cameras. The buffering device 44 is fixed to the frame 12 by two cross members 47, and comprises a pair of buffers 48 in silicone, intended to recover the ink of the plate 28, and to restore it on the glasses OG and OD. Each pad 48 is actuated in the direction of the height by means of a cylinder 50 movable between a low position and a raised position (Figures 9 and 9A). The CDD camera of the vision system 46 is fixed by an arm 52 to the buffering device 44, so as to be positioned just above the gripping elements 42 with suckers when the latter are in the rest position. Such a system known per se allows the detection of the hidden marking on OG and OD glasses and manual positioning.

La sélection d'une ou de la paire d'unités d'encrage 18 d'un niveau prédéterminé du magasin 16 est entièrement automatisée au moyen d'un clavier (non représenté) associé à un automate intégré à la machine 10 pour l'entrée des paramètres de mesure et de commande. Pour le fonctionnement de ce système d'ascenseur, il est également possible d'utiliser un lecteur de code à barres, ou une unité de commande extérieure, par exemple un ordinateur.The selection of one or the pair of inking units 18 of a predetermined level of the magazine 16 is fully automated by means of a keyboard (not shown) associated with a machine-integrated machine 10 for the input measurement and control parameters. For the operation of this elevator system, it is also possible to use a bar code reader, or an external control unit, for example a computer.

Après la sélection d'une ou de la paire d'unités d'encrage 18, intervient la phase d'encrage des clichés 28 suite à un déplacement relatif en translation horizontale par rapport aux encriers 32 correspondants.After the selection of one or of the pair of inking units 18, the inking step of the plates 28 takes place following a relative displacement in horizontal translation with respect to the corresponding inkwells 32.

Le mouvement de translation d'une paire de clichés 28 intervient au moyen d'un deuxième actionneur 54 comprenant un vérin d'accrochage 56 pour la préhension des deux clichés 28 sélectionnés, et un vérin d'actionnement 58 destiné à pousser horizontalement les clichés 28 entre deux positions C et D (figure 9).The translational movement of a pair of plates 28 is effected by means of a second actuator 54 comprising a gripping jack 56 for gripping the two selected plates 28, and an actuating jack 58 intended to push the plates 28 horizontally. between two positions C and D (Figure 9).

Le vérin d'accrochage 56 (figure 7) comporte une pince 60 articulée reliée à une chape 62 mobile du vérin, et pourvue à son extrémité opposée d'un mors 64 destiné à agripper le support de cliché 30 mobile.The attachment cylinder 56 (FIG. 7) comprises a hinged clamp 60 connected to a movable yoke 62 of the jack, and provided at its opposite end with a jaw 64 intended to grip the movable plate support 30.

Le vérin d'actionnement 58 est disposé au-dessus du vérin d'accrochage 56, et pousse la paire de clichés 28 lors de la fermeture du mors 64, jusqu'à ce que la partie gravée des clichés 28 glisse à l'extérieur des deux encriers 32. Les gravures sont alors remplies d'encre, et le transfert d'encre vers les verres OD, OG à tamponner peut alors être opéré.The actuating cylinder 58 is disposed above the attachment cylinder 56, and pushes the pair of plates 28 during the closing of the jaw 64, until the engraved part of the plates 28 slides outside the The inkcuts are then filled with ink, and the ink transfer to OD, OG glasses to be buffered can then be operated.

Les différentes étapes de tamponnage sont illustrées sur les figures 10 à 18:The different buffering steps are illustrated in FIGS. 10 to 18:

Sur la figure 10, les clichés 28 se trouvent en position C, l'orifice de l'encrier 32 étant en face de la partie gravée. Le verre droit OD est maintenu par dépression sur la ventouse gauche. Le bon positionnement du verre sur l'élément de préhension 42 est contrôlé grâce à la caméra CDD du système de vision 46 qui visualise vers un écran LCD les marquages cachés sur le verre. Puis intervient le positionnement du verre gauche OG sur la ventouse droite, suivi du blocage par dépression avec le même contrôle de positionnement au moyen du système de vision 46.In FIG. 10, the plates 28 are in position C, the orifice of the ink fountain 32 being in front of the etched part. The OD straight glass is held by vacuum on the left suction cup. The correct positioning of the glass on the gripping element 42 is controlled by the CDD camera of the vision system 46 which displays to an LCD screen the markings hidden on the glass. Then intervenes the positioning of the left lens OG on the right suction cup, followed by the depression lock with the same positioning control by means of the vision system 46.

Sur la figure 11, le deuxième actionneur 54 pousse vers la position D et permet la sortie de la paire de clichés 28 sélectionnés (un seul est visible). La partie gravée des clichés 28 se trouve à l'air libre, et seules les gravures sont remplies d'encre.In FIG. 11, the second actuator 54 pushes toward the position D and allows the output of the pair of selected plates 28 (only one is visible). The engraved part of the plates 28 is in the open air, and only the engravings are filled with ink.

Sur la figure 12, les deux tampons 48 sont actionnés par les deux vérins 50 vers la position basse, pour récupérer l'encre stockée dans les gravures des deux clichés 28, ces derniers se trouvent toujours dans la position D.In FIG. 12, the two buffers 48 are actuated by the two jacks 50 towards the low position, in order to recover the ink stored in the engravings of the two plates 28, these latter are always in the position D.

Sur la figure 13, les deux tampons 48 sont actionnés par les deux vérins 50 vers la position relevée.In Figure 13, the two buffers 48 are actuated by the two cylinders 50 to the raised position.

Sur la figure 14, le vérin d'accrochage 56 du deuxième actionneur 54 provoque le retour des clichés vers la position C, en positionnant la partie gravée sous les encriers 32.In FIG. 14, the attachment cylinder 56 of the second actuator 54 causes the plates to return to the position C, positioning the etched part under the inkwells 32.

Sur la figure 15, le vérin 40 provoque le déplacement du coulisseau 39 sur la table de travail 36, pour positionner les deux verres OG, OD sous les deux tampons 48.In FIG. 15, the jack 40 causes the slide 39 to move on the work table 36, to position the two glasses OG, OD under the two buffers 48.

Sur la figure 16, les deux tampons 48 sont actionnés par les deux vérins 50 vers la position basse, et font le marquage sur les deux verres OG, OD.In FIG. 16, the two buffers 48 are actuated by the two jacks 50 towards the low position, and make the marking on the two glasses OG, OD.

Sur la figure 17 est opérée la remontée des deux tampons 48 vers la position relevée.In Figure 17 is performed the rise of the two buffers 48 to the raised position.

Sur la figure 18, le vérin 40 provoque le retour du coulisseau 39 sur la table de travail 36, pour positionner les deux verres OG, OD en position d'origine. La dépression dans les éléments de préhension 42 est interrompue, suivie de la récupération des verres tamponnés.In Figure 18, the cylinder 40 causes the return of the slider 39 on the work table 36, to position the two glasses OG, OD in the original position. The depression in the gripping elements 42 is interrupted, followed by the recovery of the buffered glasses.

Le mode de réalisation précédemment décrit concerne un magasin 16 vertical double permettant de travailler simultanément les deux verres OD, OG sur la table de travail 36.The embodiment described above relates to a double vertical store 16 for simultaneously working the two glasses OD, OG on the work table 36.

Il est clair que l'invention s'applique également à un magasin vertical simple ayant une seule colonne d'unités d'encrage superposées, permettant de travailler sur un seul verre à la fois.It is clear that the invention also applies to a simple vertical magazine having a single column of inking units superimposed, to work on a single glass at a time.

Claims (10)

  1. Stamp-marking machine (10), in particular for corrective lenses, comprising:
    - a plurality of inking units (18) each comprising a pattern (28) etched with a specific groove, and an ink container (32) filled with ink fitted in the upside-down position on the top part of the pattern (28),
    - a stamp-marking device (44) having a stamp (48) to recover the ink stored in the etching of the pattern (28) of the corresponding selected inking unit (18) and to place it on the lenses (OD, OG),
    - a working table (36) equipped with handling elements (42) of the lenses to be stamp-marked,
    - control means for controlling the different lens stamp-marking cycles,
    - and a second actuator (54) ensuring a relative movement of the pattern (28) of the selected inking unit (18) with respect to the fixed ink container (32) to perform transfer of ink from the etching of the pattern (28) to the corresponding stamp (48),
    characterized in that
    - a vision system (46) is placed above the working table (36) for detection of the hidden marking and correct positioning of the lenses before stamp-marking,
    - the handling elements (18) are arranged and stored vertically at regular intervals along a magazine (16) which is mounted with vertical sliding on a fixed frame (12),
    - and a first actuator (20) ensures raising and lowering movement of the magazine (16) to position an inking unit (18) at a predetermined level situated between the working table (36) and the vision system (46).
  2. Stamp-marking machine according to claim 1, characterized in that the first actuator (20) comprises a geared motor (22) coupled with a movement transformation mechanism by screw (24) and nut (26).
  3. Stamp-marking machine according to claim 2, characterized in that the screw (24) extends in a vertical direction, the bi-directional driving direction of the magazine (16) in the raising and lowering directions being commanded by reversing the motor power supply.
  4. Stamp-marking machine according to claim 1, characterized in that the second actuator (54) comprises a gripping jack (56) for picking-up two selected patterns (28), and an actuating jack (58) designed to push the patterns (28) horizontally between two horizontal positions (C and D) suitable for removal and insertion of the patterns (28).
  5. Stamp-marking machine according to claim 4, characterized in that the gripping jack (56) comprises an articulated grip (60) connected to a movable cap (62) of said jack and provided at the opposite end thereof with a clamping jaw (64) designed to grip a movable pattern support (30).
  6. Stamp-marking machine according to claim 5, characterized in that the actuating jack (58) is disposed above the gripping jack (56) and pushes the selected patterns (28) when said clamping jaw (64) closes, until the etched part of the patterns (28) slides outside the corresponding two ink containers (32).
  7. Stamp-marking machine according to one of the claims 1 to 6, characterized in that the different inking units (18) are identical and arranged in pairs in an equal number on two sides of the double magazine (16), the inking units (18) superposed on one side being assigned for the right-eye lenses and those of the other side for the left-eye lenses.
  8. Stamp-marking machine according to claim 7, characterized in that the working table (36) is equipped with a slide (39) supporting a pair of lenses (OG and OD) for the left eye and the right eye respectively.
  9. Stamp-marking machine according to claim 8, characterized in that the slide (39) further comprises two gripping parts (42) with suction pads for holding the lenses (OG and OD) by depression during the transfer and stamp-marking operations.
  10. Stamp-marking machine according to claim 7, characterized in that the stamp-marking device (44) comprises a pair of silicone stamps (48) actuated in the heightwise direction by means of a pair of jacks (50) movable between a lowered position and a raised position to perform said ink transfer.
EP02354071A 2001-05-04 2002-04-26 Pad printing machine equipped with a device for the marking of spectacle lenses Expired - Lifetime EP1254769B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0106061A FR2824293B1 (en) 2001-05-04 2001-05-04 BUFFERING MACHINE PROVIDED WITH A DEVICE FOR MARKING VISION GLASSES
FR0106061 2001-05-04

Publications (2)

Publication Number Publication Date
EP1254769A1 EP1254769A1 (en) 2002-11-06
EP1254769B1 true EP1254769B1 (en) 2007-06-27

Family

ID=8863037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02354071A Expired - Lifetime EP1254769B1 (en) 2001-05-04 2002-04-26 Pad printing machine equipped with a device for the marking of spectacle lenses

Country Status (5)

Country Link
EP (1) EP1254769B1 (en)
AT (1) ATE365633T1 (en)
DE (1) DE60220851T2 (en)
ES (1) ES2289067T3 (en)
FR (1) FR2824293B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2873051B1 (en) * 2004-07-19 2006-09-29 Tecoptique Sarl BUFFER AND APPARATUS FOR OPHTHALMIC LENS AND STAMPING PROCESS
EP2444248B1 (en) * 2010-10-19 2013-07-03 Teca-Print AG Tampon printing press and method for at least two-stage printing of an object
EP2543476B1 (en) 2011-07-04 2014-03-05 Automation & Robotics Apparatus and method for clamping and handling ophthalmic lenses
CN105835549B (en) * 2016-03-23 2018-07-27 凌云工业股份有限公司 A kind of adjustable universal type mark station
CN109296653B (en) * 2018-10-11 2023-07-14 浙江图元智能装备科技有限公司 Self-lubricating bearing graphite grain automatic assembly machine based on visual identification
CN109130479A (en) * 2018-10-26 2019-01-04 珠海市嘉德电能科技有限公司 A kind of coding transfer printing equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6123021A (en) * 1998-12-09 2000-09-26 Cameron; Robert Multiple color printer for printing on small objects
DE19913322C2 (en) * 1999-03-24 2001-09-27 Tampoprint Gmbh Pad printing machine

Also Published As

Publication number Publication date
FR2824293A1 (en) 2002-11-08
DE60220851D1 (en) 2007-08-09
DE60220851T2 (en) 2008-02-14
FR2824293B1 (en) 2003-06-13
ES2289067T3 (en) 2008-02-01
ATE365633T1 (en) 2007-07-15
EP1254769A1 (en) 2002-11-06

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