EP0415813A1 - Device for blocking a lens blank - Google Patents
Device for blocking a lens blank Download PDFInfo
- Publication number
- EP0415813A1 EP0415813A1 EP90402249A EP90402249A EP0415813A1 EP 0415813 A1 EP0415813 A1 EP 0415813A1 EP 90402249 A EP90402249 A EP 90402249A EP 90402249 A EP90402249 A EP 90402249A EP 0415813 A1 EP0415813 A1 EP 0415813A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- receptacle
- gripping block
- ejection
- spectacle lens
- arm
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/005—Blocking means, chucks or the like; Alignment devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
- B24B9/146—Accessories, e.g. lens mounting devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53978—Means to assemble or disassemble including means to relatively position plural work parts
Definitions
- the present invention relates generally to the fitting, on a lens of glasses to work, and for example to overflow, of a block, said here for simple convenience gripping block, which, adapted to not adhere to such spectacle lens that temporarily, for example by means of a suction cup, is intended to allow it to be put in place, and locked in position, on a machine suitable for the work to be performed.
- a gliding device comprising a receptacle adapted to frictionally receive the gripping block to be installed.
- this receptacle is present on an arm, called a gliding arm, which, in addition to any other movements, is mounted movable perpendicularly to a plate on which the glasses of glasses to be fitted are placed waiting.
- a gliding arm which, in addition to any other movements, is mounted movable perpendicularly to a plate on which the glasses of glasses to be fitted are placed waiting.
- the gluing arm firstly approaches the plate, which leads it to apply the gripping block to the spectacle lens by itself.
- the present invention generally relates to a provision capable of avoiding such an incident.
- a sliding device of the kind comprising, for the installation of a gripping block on a spectacle lens arranged in standby on a plate, a receptacle adapted to frictionally receive the gripping block to pose, with, associated with said receptacle, ejection means suitable for facilitating the release of said gripping block from said receptacle after its installation, this gliding device being generally characterized in that, acting outside the receptacle , said ejection means are intended to wear on the spectacle lens to be treated.
- they comprise two ejection fingers, which, each mounted movable against elastic return means, generally parallel to the axis of the receptacle, are each arranged respectively on the side and d 'other of the axis of this receptacle, being carried by pivoting arms belonging to the same lifter.
- the ejection means according to the invention resiliently hold this spectacle lens against the plate which carries it when the sliding arm which they equip moves away from this plate, which, the efforts in game being established accordingly, is sufficient for the gripping block, retained by the spectacle lens, to disengage from its receptacle, and, therefore, escape from the sliding arm.
- FIGS. 4A, 4B, 4C, 4D and 4E it is a question, overall, of reporting, on a spectacle lens 10 placed on standby on a plate 11, a block gripping device 12 comprising, for example, for this purpose, a suction cup 13.
- the gripping block 12 comprises, in the embodiment shown, a cylindrical end piece 14, and, for example, a cylindrical end piece of circular outline, suitable for gripping.
- the gliding device 15 used for installing such a gripping block 12 will not be described in all its details here.
- this gliding device 15 comprises a gliding arm 16 which, mounted movable, knows, in the terminal phase at least of its path, a straight path , substantially perpendicular to the plate 11.
- This gloving arm 16 comprises a receptacle 18 adapted to receive frictionally, by its end piece 14, the gripping block 12 to be placed.
- this is a simple blind cylindrical housing with a circular contour complementary to that of this end piece 14.
- this receptacle 18 is formed in an intermediate support 20, itself attached, by a nozzle 21, on the gliding arm 16, by means of a recess 22 provided hollow for this purpose on a boss 23 thereof, and duly locked in position, for example by needle screws not shown, in this housing 22.
- the receptacle 18 is associated with ejection means 24 suitable for facilitating the release of the gripping block 12 from this receptacle 18 after its installation.
- these ejection means 24 are intended to bear on the spectacle lens 10 to be treated.
- ejection finger 25 which, mounted movably against elastic return means, in practice a simple coil spring 36, generally parallel to the axis of the receptacle 18, is permanently biased towards a waiting position, Figures 1 to 3, for which its free end extends far beyond this receptacle 18, and, in practice, far beyond a gripping block 12 when such a gripping block 12 is engaged, by its end piece 14, with such a receptacle 18, FIG. 4A.
- each ejection finger 25 is reduced to a single rod, provided, at its free end, with a head 29 capable of softening the contact with the spectacle lens 10 to be fitted.
- the two ejection fingers 25 extend symmetrically with respect to each other, and the same applies to the arms 26 which carry them.
- the spring 36 constituting the elastic return means associated with an ejection finger 25 is disposed around the latter, in a housing provided for this purpose in a boss 30 projecting from the corresponding arm 26, and, taking pressing on a cover 31 closing this housing 30, it bears on a split elastic washer 32 made integral with the ejection finger 25 by engagement in a groove provided for this purpose thereon.
- a hole 33 is provided in the gliding arm 16 in line with each of the ejection fingers 25, to allow the necessary clearance for these.
- the sliding arm 16 carries a gripping block 12, and it moves in the direction of the plate 11, perpendicular to the latter, and therefore parallel to the axis of the receptacle 18 corresponding, according to arrow F in FIG. 4A.
- the head 29 of ejection fingers 25 then extends in front of the suction cup 13 of the gripping block 12.
- the elastic forces which the spectacle lens 10 is subjected to on the part of the ejection fingers 25 have an axial component greater than that of the friction forces between the end piece. 14 of the gripping block 12 and the corresponding side wall of the receptacle 18, and that, on the other hand, the adhesion forces between the suction cup 13 of this gripping block 12 and the spectacle lens 10 themselves have a component axial greater than the latter.
- this implantation can frequently be carried out in an eccentric position relative to the geometric axis of the spectacle lens 10, as shown in FIG. 5.
- the first ejection finger 25 to come into contact with the spectacle lens 10 causes tilting of the lifter 27 leading the second ejection finger 25 to also come into contact with the latter.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Eyeglasses (AREA)
- Automatic Assembly (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
Il s'agit d'un dispositif de glantage du genre comportant, pour la pose d'un bloc de préhension (12) sur un verre de lunettes (10) disposé en attente sur une platine (11), un réceptacle (18) adapté à recevoir à frottement le bloc de préhension (12) à poser, avec, associés à ce réceptacle (18), des moyens d'éjection (24) propres à faciliter le dégagement dudit bloc de préhension (12) dudit réceptacle (18) après sa pose.It is a sorting device of the type comprising, for the installation of a gripping block (12) on a spectacle lens (10) disposed in standby on a plate (11), a receptacle (18) adapted receiving frictionally the gripping block (12) to be placed, with, associated with this receptacle (18), ejection means (24) suitable for facilitating the release of said gripping block (12) from said receptacle (18) after his pose.
Suivant l'invention, intervenant à l'extérieur du réceptacle (18), les moyens d'éjection (24), qui sont en pratique constitués de deux doigts d'éjection (25) montés mobiles parallèlement à l'axe du réceptacle (18) à l'encontre de moyens élastiques de rappel, sont destinés à porter sur le verre de lunettes (10) à traiter.According to the invention, operating outside the receptacle (18), the ejection means (24), which in practice consist of two ejection fingers (25) mounted movable parallel to the axis of the receptacle (18 ) against elastic return means, are intended to wear on the spectacle lens (10) to be treated.
Application, notamment, à la pose d'un bloc de préhension à ventouse sur un verre de lunettes. 
Description
La présente invention concerne d'une manière générale la pose, sur un verre de lunettes à travailler, et par exemple à déborder, d'un bloc, dit ici par simple commodité bloc de préhension, qui, adapté à n'adhérer à un tel verre de lunettes que de manière provisoire, par l'intermédiaire par exemple d'une ventouse, est destiné à en permettre la mise en place, et le blocage en position, sur une machine appropriée au travail à effectuer.The present invention relates generally to the fitting, on a lens of glasses to work, and for example to overflow, of a block, said here for simple convenience gripping block, which, adapted to not adhere to such spectacle lens that temporarily, for example by means of a suction cup, is intended to allow it to be put in place, and locked in position, on a machine suitable for the work to be performed.
Elle vise plus particulièrement le cas où cette pose est assurée à l'aide d'un dispositif de glantage comportant un réceptacle adapté à recevoir à frottement le bloc de préhension à poser.It relates more particularly to the case where this installation is ensured using a gliding device comprising a receptacle adapted to frictionally receive the gripping block to be installed.
Par exemple, ce réceptacle est présent sur un bras, dit bras de glantage, qui, outre d'éventuels autres mouvements, est monté mobile perpendiculairement à une platine sur laquelle est disposé en attente le verre de lunettes à équiper.For example, this receptacle is present on an arm, called a gliding arm, which, in addition to any other movements, is mounted movable perpendicularly to a plate on which the glasses of glasses to be fitted are placed waiting.
Au cours de son trajet, le bras de glantage se rapproche, dans un premier temps, de la platine, ce qui le conduit à appliquer de lui-même le bloc de préhension au verre de lunettes.During its journey, the gluing arm firstly approaches the plate, which leads it to apply the gripping block to the spectacle lens by itself.
Dans un deuxième temps, il s'éloigne de la platine.Secondly, it moves away from the stage.
Pour certaines applications, au moins, il est demandé qu'il abandonne alors sur cette platine le verre de lunettes dûment équipé du bloc de préhension.For certain applications, at least, it is requested that it then abandons on this turntable the spectacle lens duly equipped with the gripping block.
Il a été proposé de lui associer, pour ce faire, des moyens d'éjection propres à faciliter le dégagement du bloc de préhension de son réceptacle après sa pose.To do this, it has been proposed to associate it with ejection means capable of facilitating the release of the gripping block from its receptacle after its installation.
A ce jour, ces moyens d'éjection, intervenant à l'intérieur même du réceptacle, sont destinés à agir sur le bloc de préhension lui-même.To date, these ejection means, operating inside the receptacle itself, are intended to act on the gripping block itself.
L'expérience montre qu'ils manquent en pratique d'efficacité, et qu'il n'est donc pas rare, dans ces conditions, que, lors de son mouvement de retrait, le bras de glantage entraîne malgré tout avec lui le bloc de préhension, et donc le verre du lunettes alors adhérent à celui-ci.Experience shows that in practice they lack efficiency, and it is therefore not uncommon, under these conditions, that, during its withdrawal movement, the arm slipping nevertheless carries with it the gripping block, and therefore the lens glass then adherent thereto.
La présente invention a d'une manière générale pour objet une disposition de nature à éviter un tel incident.The present invention generally relates to a provision capable of avoiding such an incident.
De manière plus précise, elle a pour objet un dispositif de glantage du genre comportant, pour la pose d'un bloc de préhension sur un verre de lunettes disposé en attente sur une platine, un réceptacle adapté à recevoir à frottement le bloc de préhension à poser, avec, associés audit réceptacle, des moyens d'éjection propres à faciliter le dégagement dudit bloc de préhension dudit réceptacle après sa pose, ce dispositif de glantage étant d'une manière générale caractérisé en ce que, intervenant à l'extérieur du réceptacle, lesdits moyens d'éjection sont destinés à porter sur le verre de lunettes à traiter.More specifically, it relates to a sliding device of the kind comprising, for the installation of a gripping block on a spectacle lens arranged in standby on a plate, a receptacle adapted to frictionally receive the gripping block to pose, with, associated with said receptacle, ejection means suitable for facilitating the release of said gripping block from said receptacle after its installation, this gliding device being generally characterized in that, acting outside the receptacle , said ejection means are intended to wear on the spectacle lens to be treated.
Ainsi ces moyens d'éjection bénéficient avantageusement d'un bras de levier non négligeable, qui, par la démultiplication qui en résulte, est garant de leur efficacité.Thus, these ejection means advantageously benefit from a non-negligible lever arm, which, by the resulting reduction, guarantees their effectiveness.
En pratique, dans une forme préférée de réalisation, ils comportent deux doigts d'éjection, qui, chacun montés mobiles à l'encontre de moyens élastiques de rappel, globalement parallèlement à l'axe du réceptacle, sont disposés chacun respectivement de part et d'autre de l'axe de ce réceptacle, en étant portés par des bras pivotants appartenant à un même palonnier.In practice, in a preferred embodiment, they comprise two ejection fingers, which, each mounted movable against elastic return means, generally parallel to the axis of the receptacle, are each arranged respectively on the side and d 'other of the axis of this receptacle, being carried by pivoting arms belonging to the same lifter.
Ainsi, se trouvent systématiquement compensés les effets d'un éventuel, et en fait très fréquent, excentrement du bloc de préhension à poser vis-à-vis de l'axe géométrique du verre de lunettes à équiper.Thus, are systematically compensated for the effects of a possible, and in fact very frequent, eccentricity of the gripping block to be placed with respect to the geometric axis of the spectacle lens to be fitted.
Quoi qu'il en soit, les moyens d'éjection suivant l'invention maintiennent élastiquement ce verre de lunettes contre la platine qui le porte lorsque le bras de glantage qu'ils équipent s'éloigne de cette platine, ce qui, les efforts en jeu étant établis en conséquence, suffit à ce que le bloc de préhension, retenu par le verre de lunettes, se dégage de son réceptacle, et, donc, échappe au bras de glantage.Anyway, the ejection means according to the invention resiliently hold this spectacle lens against the plate which carries it when the sliding arm which they equip moves away from this plate, which, the efforts in game being established accordingly, is sufficient for the gripping block, retained by the spectacle lens, to disengage from its receptacle, and, therefore, escape from the sliding arm.
Les caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence aux dessins schématiques annexés sur lesquels :
- la figure 1 est une vue partielle, en élévation, d'un dispositif de glantage suivant l'invention, pour la configuration de pose de celui-ci ;
- les figures 2 et 3 en sont des vues partielles en coupe suivant, chacune respectivement, les lignes II-II et III-III de la figure 1 ;
- les figures 4A, 4B, 4C, 4D, 4E sont, à échelle inférieure, des vues partielles en élévation, qui, analogues à celle de la figure 1, en présentant, localement, pour certaines, un arrachement, illustrent diverses phases successives de la pose d'un bloc de préhension sur un verre de lunettes par ce dispositif de glantage ;
- la figure 5 est une vue partielle en élévation analogue à celle de la figure 4D, pour une variante d'intervention de ce dispositif de glantage.
- Figure 1 is a partial view, in elevation, of a gliding device according to the invention, for the laying configuration thereof;
- Figures 2 and 3 are partial sectional views along each, respectively, lines II-II and III-III of Figure 1;
- FIGS. 4A, 4B, 4C, 4D, 4E are, on a smaller scale, partial elevation views, which, similar to that of FIG. 1, presenting, locally, for some, a cutaway, illustrate various successive phases of the placing a gripping block on a spectacle lens by this gliding device;
- Figure 5 is a partial elevational view similar to that of Figure 4D, for an alternative intervention of this gliding device.
Tel qu'illustré sur ces figures, et plus particulièrement sur les figures 4A, 4B, 4C, 4D et 4E, il s'agit, globalement, de rapporter, sur un verre de lunettes 10 disposé en attente sur une platine 11, un bloc de préhension 12 comportant, par exemple, à cet effet, une ventouse 13.As illustrated in these figures, and more particularly in FIGS. 4A, 4B, 4C, 4D and 4E, it is a question, overall, of reporting, on a
Outre la ventouse 13, le bloc de préhension 12 comporte, dans la forme de réalisation représentée, un embout cylindrique 14, et, par exemple, un embout cylindrique de contour circulaire, propre à sa saisie.In addition to the
Le dispositif de glantage 15 mis en oeuvre pour la pose d'un tel bloc de préhension 12 ne sera pas décrit dans tous ses détails ici.The
Seuls en seront décrits les éléments nécessaires à la compréhension de l'invention.Only the elements necessary for understanding the invention will be described therein.
Il suffira, à ce sujet, d'indiquer que, dans la forme de réalisation représentée, ce dispositif de glantage 15 comporte un bras de glantage 16 qui, monté mobile, connaît, dans la phase terminale au moins de son trajet, un parcours rectiligne, sensiblement perpendiculairement à la platine 11.It will suffice, in this regard, to indicate that, in the embodiment shown, this
Ce bras de glantage 16 comporte un réceptacle 18 adapté à recevoir à frottement, par son embout 14, le bloc de préhension 12 à poser.This
Il s'agit, en pratique, d'un simple logement cylindrique borgne de contour circulaire complémentaire de celui de cet embout 14.In practice, this is a simple blind cylindrical housing with a circular contour complementary to that of this
Dans la forme de réalisation représentée, ce réceptacle 18 est ménagé dans un support intermédiaire 20, lui-même rapporté, par un embout 21, sur le bras de glantage 16, à la faveur d'un logement 22 prévu en creux à cet effet sur un bossage 23 de celui-ci, et dûment bloqué en position, par exemple par des vis pointeaux non représentées, dans ce logement 22.In the embodiment shown, this
Au réceptacle 18 sont associés des moyens d'éjection 24 propres à faciliter le dégagement du bloc de préhension 12 de ce réceptacle 18 après sa pose.The
Suivant l'invention, intervenant à l'extérieur du réceptacle 18, ces moyens d'éjection 24 sont destinés à porter sur le verre de lunettes 10 à traiter.According to the invention, operating outside the
Ils comportent, pour ce faire, au moins un doigt d'éjection 25, qui, monté mobile à l'encontre de moyens élastiques de rappel, en pratique un simple ressort à boudin 36, globalement parallèlement à l'axe du réceptacle 18, est sollicité en permanence en direction d'une position d'attente, figures 1 à 3, pour laquelle son extrémité libre s'étend largement au-delà de ce réceptacle 18, et, en pratique, largement au-delà d'un bloc de préhension 12 lorsqu'un tel bloc de préhension 12 est en prise, par son embout 14, avec un tel réceptacle 18, figure 4A.To do this, they comprise at least one
Dans la forme de réalisation représentée, il y a, ainsi, disposés chacun respectivement de part et d'autre du réceptacle 18, à distance de celui-ci, deux doigts d'éjection 25, et chacun d'eux est porté par un bras 26 monté pivotant sur le bras de glantage 16, les deux bras 26 correspondant ainsi chacun respectivement à ces deux doigts d'éjection 25 appartenant en fait à un seul et même palonnier 27, articulé, par un axe 28, dans sa zone médiane, au bras de glantage 16, perpendiculairement à l'axe du réceptacle 18.In the embodiment shown, there are thus each disposed respectively on either side of the
En outre, dans cette forme de réalisation, chaque doigt d'éjection 25 se réduit à une simple tige, munie, à son extrémité libre, d'une tête 29 propre à en adoucir le contact avec le verre de lunettes 10 à équiper.In addition, in this embodiment, each
Les deux doigt d'éjection 25 s'étendent symétriquement l'un par rapport à l'autre, et il en est de même des bras 26 qui les portent.The two
En pratique, le ressort 36 constituant les moyens élastiques de rappel associés à un doigt d'éjection 25 est disposé autour de celui-ci, dans un logement prévu à cet effet dans un bossage 30 faisant saillie sur le bras 26 correspondant, et, prenant appui sur un opercule 31 fermant ce logement 30, il porte sur une rondelle élastique fendue 32 rendue solidaire du doigt d'éjection 25 par engagement dans une gorge prévue à cet effet sur celui-ci.In practice, the
Dans la forme de réalisation représentée, il est prévu un perçage 33 dans le bras de glantage 16 au droit de chacun des doigts d'éjection 25, pour permettre le débattement nécessaire à ceux-ci.In the embodiment shown, a
Au début d'un cycle de travail, figure 4A, le bras de glantage 16 porte un bloc de préhension 12, et il se déplace en direction de la platine 11, perpendiculairement à celle-ci, et donc parallèlement à l'axe du réceptacle 18 correspondant, suivant la flèche F de la figure 4A.At the start of a work cycle, FIG. 4A, the
Compte tenu de ce qui précède, la tête 29 des doigts d'éjection 25 s'étend alors en avant de la ventouse 13 du bloc de préhension 12.In view of the above, the
C'est donc les doigts d'éjection 25 qui, par cette tête 29, entrent les premiers en contact avec le verre de lunettes 10 à équiper, figure 4B.It is therefore the
A partir de cet instant, les doigts d'éjection 25 s'effacent élastiquement, cependant que, suivant la flèche F de la figure 4B, le mouvement d'approche du bras de glantage 16 vis-à-vis de la platine 11 est poursuivi jusqu'à ce que, après contact de la ventouse 13 avec le verre de lunettes 10, l'écrasement axial de cette ventouse 13 contre ce verre de lunettes 10 soit en toute certitude suffisant pour qu'elle adhère à ce dernier, figure 4C.From this moment, the
Son mouvement s'inversant, le bras de glantage 16 s'éloigne ensuite de la platine 11, suivant un mouvement opposé au précédent, tel que schématisé par la flèche F′ sur les figures 4D et 4E.Its movement being reversed, the
Sous la sollicitation des ressorts 36 constituant leurs moyens élastiques de rappel, les doigts d'éjection 25, toujours au contact du verre de lunettes 10, maintiennent alors celui-ci en appui contre la platine 11, cependant que, les efforts en jeu étant établis en conséquence, le bloc de préhension 12, dûment retenu par le verre de lunettes 10, ne suit pas dans ce mouvement de retrait, ou d'éloignement, le bras de glantage 16.Under the stress of the
Il suffit, pour ce faire, d'une part, que les forces élastiques dont est l'objet le verre de lunettes 10 de la part des doigts d'éjection 25 aient une composante axiale supérieure à celle des forces de frottement entre l'embout 14 du bloc de préhension 12 et la paroi latérale correspondante du réceptacle 18, et que, d'autre part, les forces d'adhérence entre la ventouse 13 de ce bloc de préhension 12 et le verre de lunettes 10 aient elles-mêmes une composante axiale supérieure à cette dernière.To do this, it is sufficient, on the one hand, that the elastic forces which the
Ainsi lors du retrait du bras de glantage 16, le bloc de préhension 12 commence à se dégager progressivement du réceptacle 18 de celui-ci, figure 4D, jusqu'à l'abandonner complètement, figure 4E.Thus when removing the
Conjointement, les doigts d'éjection 25 reviennent progressivement à leur position initiale d'attente.At the same time, the
Dans ce qui précède, il a été supposé que le bloc de préhension 12 était à implanter suivant l'axe géométrique du verre de lunettes 10.In the foregoing, it has been assumed that the
Mais il n'en est pas nécessairement ainsi.But this is not necessarily so.
Au contraire, cette implantation peut fréquemment se faire en position excentrée par rapport à l'axe géométrique du verre de lunettes 10, tel que représenté à la figure 5.On the contrary, this implantation can frequently be carried out in an eccentric position relative to the geometric axis of the
Dans un tel cas, le premier doigt d'éjection 25 à venir en contact avec le verre de lunettes 10 provoque un basculement du palonnier 27 conduisant le deuxième doigt d'éjection 25 à venir lui aussi en contact avec celui-ci.In such a case, the
Bien entendu, la présente invention ne se limite pas à la forme de réalisation décrite et représentée, mais englobe toute variante d'exécution.Of course, the present invention is not limited to the embodiment described and shown, but encompasses any variant.
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8910714 | 1989-08-09 | ||
| FR8910714A FR2650773B1 (en) | 1989-08-09 | 1989-08-09 | GLOVING DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0415813A1 true EP0415813A1 (en) | 1991-03-06 |
| EP0415813B1 EP0415813B1 (en) | 1993-11-03 |
Family
ID=9384603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90402249A Expired - Lifetime EP0415813B1 (en) | 1989-08-09 | 1990-08-06 | Device for blocking a lens blank |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5027492A (en) |
| EP (1) | EP0415813B1 (en) |
| JP (1) | JP2525944B2 (en) |
| DE (1) | DE69004385T2 (en) |
| ES (1) | ES2047878T3 (en) |
| FR (1) | FR2650773B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2682058A1 (en) * | 1991-10-04 | 1993-04-09 | Buchmann Optical Eng | APPARATUS FOR RAISING THE TOPOGRAPHY OF THE CONVEX FACE OF AN OPTICAL GLASS AND MACHINE FOR LAYING AN ADAPTER INCLUDING SUCH AN APPARATUS. |
| US5721644A (en) * | 1996-09-24 | 1998-02-24 | Gerber Optical, Inc. | Apparatus and method for attaching a finishing block to a lens |
| US6011630A (en) * | 1996-11-12 | 2000-01-04 | Gerber Optical, Inc. | System and method for blocking a lens |
| EP2149400A1 (en) * | 2007-05-23 | 2010-02-03 | Tokuyama Corporation | Lens coating device |
| CN110666596A (en) * | 2019-09-02 | 2020-01-10 | 中国兵器科学研究院宁波分院 | Positioning and attitude adjusting device for optical element |
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| EP1260314A4 (en) | 2000-02-22 | 2009-04-22 | Hoya Corp | Lens layout block device |
| ATE440698T1 (en) | 2000-02-22 | 2009-09-15 | Hoya Corp | LENS DESIGN BLOCK APPARATUS |
| KR20030069648A (en) * | 2002-02-22 | 2003-08-27 | 두산메카텍 주식회사 | Movable and Automatic Tool Changing System |
| US8569939B2 (en) | 2004-09-15 | 2013-10-29 | Seoul Semiconductor Co., Ltd. | Luminous device with heat pipe and method of manufacturing heat pipe lead for luminous device |
| US10017847B2 (en) | 2007-03-05 | 2018-07-10 | Gentex Corporation | Method and apparatus for ion milling |
| CN110068941B (en) * | 2019-04-24 | 2020-07-14 | 江苏全真光学科技股份有限公司 | Small-sized lens assembling equipment for repairing glasses |
| CN113001130B (en) * | 2019-12-18 | 2024-01-23 | 杭州三花研究院有限公司 | Riveting device and riveting method |
| EP3904001B1 (en) * | 2020-04-29 | 2024-07-03 | Huvitz Co., Ltd. | Blocking device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1727889A (en) * | 1927-06-02 | 1929-09-10 | Bausch & Lomb | Lens-blocking device |
| DE2545948A1 (en) * | 1975-10-14 | 1977-04-28 | Prontor Werk Gauthier Gmbh | Spectacle lens polishing machine work holder - uses tool with spherical surface and positioning grip |
| FR2613268A1 (en) * | 1987-04-02 | 1988-10-07 | Briot Int | Device for applying an adaptor for a machine for centring optical lenses |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US522808A (en) * | 1894-07-10 | Bottle-corking machine | ||
| JPS5142932Y2 (en) * | 1971-09-28 | 1976-10-19 | ||
| US3909055A (en) * | 1974-05-29 | 1975-09-30 | Richard M Koppel | Device for retrieving small sheets such as radiographs from a tank |
| US4201408A (en) * | 1978-02-16 | 1980-05-06 | Willard Tressel | Contact lens insertion and removal device |
| JPS5662786A (en) * | 1979-10-25 | 1981-05-28 | Fuji Electric Co Ltd | Mechanical hand for handling device feeding work to machine tool |
| US4378126A (en) * | 1980-11-17 | 1983-03-29 | Leonid Procenko | Contact lens insertion apparatus |
-
1989
- 1989-08-09 FR FR8910714A patent/FR2650773B1/en not_active Expired - Fee Related
-
1990
- 1990-07-25 US US07/557,020 patent/US5027492A/en not_active Expired - Lifetime
- 1990-08-06 ES ES90402249T patent/ES2047878T3/en not_active Expired - Lifetime
- 1990-08-06 EP EP90402249A patent/EP0415813B1/en not_active Expired - Lifetime
- 1990-08-06 DE DE90402249T patent/DE69004385T2/en not_active Expired - Fee Related
- 1990-08-07 JP JP2209072A patent/JP2525944B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1727889A (en) * | 1927-06-02 | 1929-09-10 | Bausch & Lomb | Lens-blocking device |
| DE2545948A1 (en) * | 1975-10-14 | 1977-04-28 | Prontor Werk Gauthier Gmbh | Spectacle lens polishing machine work holder - uses tool with spherical surface and positioning grip |
| FR2613268A1 (en) * | 1987-04-02 | 1988-10-07 | Briot Int | Device for applying an adaptor for a machine for centring optical lenses |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2682058A1 (en) * | 1991-10-04 | 1993-04-09 | Buchmann Optical Eng | APPARATUS FOR RAISING THE TOPOGRAPHY OF THE CONVEX FACE OF AN OPTICAL GLASS AND MACHINE FOR LAYING AN ADAPTER INCLUDING SUCH AN APPARATUS. |
| DE4230610A1 (en) * | 1991-10-04 | 1993-04-15 | Buchmann Optical Eng | Device for measuring topography of convex surface of optical glass, esp. for spectacles, - contains flat glass support and measurement plate with circular contact edge contg. sliding contact sensors with displacement transducers |
| US5721644A (en) * | 1996-09-24 | 1998-02-24 | Gerber Optical, Inc. | Apparatus and method for attaching a finishing block to a lens |
| US6011630A (en) * | 1996-11-12 | 2000-01-04 | Gerber Optical, Inc. | System and method for blocking a lens |
| EP2149400A1 (en) * | 2007-05-23 | 2010-02-03 | Tokuyama Corporation | Lens coating device |
| EP2149400A4 (en) * | 2007-05-23 | 2014-04-02 | Tokuyama Corp | Lens coating device |
| CN110666596A (en) * | 2019-09-02 | 2020-01-10 | 中国兵器科学研究院宁波分院 | Positioning and attitude adjusting device for optical element |
| CN110666596B (en) * | 2019-09-02 | 2021-08-06 | 中国兵器科学研究院宁波分院 | Positioning and attitude adjusting device for optical element |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69004385T2 (en) | 1994-05-11 |
| FR2650773B1 (en) | 1991-11-22 |
| EP0415813B1 (en) | 1993-11-03 |
| US5027492A (en) | 1991-07-02 |
| FR2650773A1 (en) | 1991-02-15 |
| JP2525944B2 (en) | 1996-08-21 |
| ES2047878T3 (en) | 1994-03-01 |
| JPH0379241A (en) | 1991-04-04 |
| DE69004385D1 (en) | 1993-12-09 |
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