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EP0483000A1 - Device for the blocking of lens blanks with a lockable arm - Google Patents

Device for the blocking of lens blanks with a lockable arm Download PDF

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Publication number
EP0483000A1
EP0483000A1 EP91402824A EP91402824A EP0483000A1 EP 0483000 A1 EP0483000 A1 EP 0483000A1 EP 91402824 A EP91402824 A EP 91402824A EP 91402824 A EP91402824 A EP 91402824A EP 0483000 A1 EP0483000 A1 EP 0483000A1
Authority
EP
European Patent Office
Prior art keywords
arm
gliding
carriage
pawl
carried
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91402824A
Other languages
German (de)
French (fr)
Other versions
EP0483000B1 (en
Inventor
Jean-Louis Cariou
Christian Joncour
Claude Borius
Philippe Clara
François Brule
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Publication of EP0483000A1 publication Critical patent/EP0483000A1/en
Application granted granted Critical
Publication of EP0483000B1 publication Critical patent/EP0483000B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

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.
  • the present invention relates to the case where, according to provisions of the type of those described in the French patent application, not yet published, filed by the applicant on September 29, 1989 under No. 89 12735, the glantage device thus implemented comprises, for the installation of a gripping block on a spectacle lens arranged in standby on a plate carried by a frame, a gliding arm, which is adapted to receive, in a removable manner, the gripping block to be placed, a carriage, on which the sliding arm is pivotally mounted between two extreme positions, one raised, loading, the other tilted, laying, and which is itself movable rectilinearly on the frame between two extreme positions, one, moved back, at rest, the other, advanced, at the end of the race, of the drive means, and, acting between said drive means and at least any one of the that constitute the arm and the carriage, a transmission from which it follows that, at least when the carriage is in the vicinity of its end-of-travel position, the sliding arm is in the tilted
  • the pivoting of the sliding arm and the movement of the carriage advantageously result from the same movement, induced by the drive means, the sliding arm passing to its tilted laying position before the carriage moves in the direction of its advanced end-of-travel position or during this movement, and returning normally in the raised loading position after the carriage returns to its retracted rest position.
  • the present invention generally relates to a provision making it possible to avoid this drawback and leading to other advantages.
  • a sliding device of the kind comprising, for the installation of a gripping block on a spectacle lens arranged in standby on a plate carried by a frame, a sliding arm, which is suitable to receive, in a removable manner, the gripping block to be placed, a carriage, on which the sliding arm is pivotally mounted between two extreme positions, one, raised, of loading, the other, tilted, of laying, and which is itself mounted movable in a rectilinear manner on the frame between two extreme positions, one, remote, at rest, the other, advanced, end of stroke, drive means, and, intervening between said means drive and any at least of the elements that constitute the sliding arm and the carriage, a transmission which results in that, at least when the carriage is in the vicinity of its end position, the sliding arm is in the tilted installation position, this dispositi f of gliding being generally characterized in that, between the gliding arm and the carriage, there are latching means specific to a disengageable locking of the sliding arm
  • latching means extend their effects throughout the movement, in one direction or the other, of the carriage.
  • the installation of the gripping block can advantageously be done in a particularly rigorous manner, in a position duly centered relative to the spectacle lens to be fitted.
  • the gliding device 10 comprises, for the installation of a gripping block, not shown, on a spectacle lens 11 placed waiting on a plate 12, as shown schematically in broken lines in Figure 4, a gliding arm 13, which is adapted to receive, removably, this gripping block, presenting for this purpose a receptacle 14, Figures 1 and 3, a carriage 15, on which the arm glantage 13 is pivotally mounted between two extreme positions, one, raised, loading, Figures 1 to 4, the other, tilted, laying, Figure 9, and which is itself mounted movable rectilinearly on a frame 16, between two extreme positions, one, moved back, at rest, FIGS.
  • the frame 16 is made, in a particularly rigid manner, of two shells 18, which, duly facing one another, along a plane P1 containing l the laying axis A1, that is to say the axis along which the gripping block must be laid, are from place to place duly coupled to one another by tie rods 20.
  • this frame 16 comprises a base 21, by which it can be attached directly, or indirectly, by means of spacers on any support, for example the frame of a contour reading device, a head 22, on which the sliding arm 13 and the carriage 15 intervene, and, connecting this base 21 and this head 22 to each other, a body 23.
  • the gliding arm 13 is in the form of a stirrup.
  • the sliding arm 13 also carries, in its middle part 25, two ejectors 27, which, each arranged respectively on either side of the receptacle 14, are intended to come to bear on the spectacle lens 11 for the maintenance of the latter on the plate 12 during the return movement of the carriage 15 from its advanced end-of-travel position to its retracted position of rest.
  • the carriage 15 is reduced to two slides 28, one per lateral arm 26 of the glider arm 13, and these slides 28, which each have a generally rectangular outline, are each individually mounted mobile in two grooves 30 provided for this purpose on the frame 16.
  • these grooves 30 each affect respectively the shells 18 constituting this frame 16, on the outer surface thereof, and for the retention of the slides 28, it is reported, on these shells 18, on either side grooves 30, plates 31 which partially close them.
  • each of the lateral arms 26 of this sliding arm 13 locally forms a hub 32 by which it is engaged in journalling, with the interposition of a bearing 33, on a cylindrical boss 34 provided locally projecting for this purpose on the corresponding slide 28.
  • a screw 36 ensures the security of the corresponding assembly.
  • A2 be the pivot axis of the gliding arm 13 on the carriage 15.
  • latching means specific to a disengageable locking of this sliding arm 13 on this carriage 15 when it is in the tilted installation position.
  • these latching means comprise at least one pawl 38, which, carried by any of the elements that constitute the gliding arm 13 and the carriage 15, is pivotally mounted on it, a lug 40, which, projecting from the other of these elements, is interposed on the path of the pawl 38, elastic return means, explained later, which permanently urge the pawl 38 towards an active position for which, as shown in Figure 9, it is capable of hooking on the lug 40, and, for retaining the pawl 38 in the inactive position, away from the lug 40, when, as shown in Figures 1 to 4 , the carriage 15 is in the retracted rest position, a stop 41 which, carried by the frame 16, is also interposed on the path of the pawl 38, on the other side of it relative to the lug 40.
  • the pawl 38 is carried by the carriage 15, the associated lug 40 protrudes from the gliding arm 13, and there are thus two pawls 38, one for each lateral arm 26 of the sliding arm 13, and, in correspondence, two lugs 40.
  • A3 be the pivot axis of the pawls 38 on the carriage 15.
  • the pawls 38 are each mounted adjustable in position on the carriage 15, perpendicular to the laying plane P2, that is to say to the plane containing the direction of movement D of this carriage 15 and the pivot axis A2 of the sliding arm 13.
  • the two pawls 38 are each respectively carried by the two slides 28 constituting the carriage 15.
  • lever arm 42 which, at its end, has a square return 43, with a substantially straight flank, by which they are able to be hooked onto the associated lug 40, a central part 44, by which they are pivotally engaged on a hub 45, duly shouldered, carried by the corresponding slide 28, and a lever arm 46, which, aligned with the lever lever 42 above, extends on the other side of the middle portion 44 relative thereto, and by which they are adapted to be actuated by the corresponding stop 41.
  • this boss 47 has a hole 48 elongated in a buttonhole perpendicular to the laying plane P2, FIG. 5.
  • a threaded tie rod 50, with screw and nut, ensures the safety of the corresponding assembly.
  • the elastic return means associated with such a pawl 38 are constituted by a torsion spring 52, the median torsion part of which is engaged on the hub 45 and one arm of which is hooked onto the pawl 38 while the other is hooked on the corresponding slide 28.
  • the lug 40 associated with each of the pawls 38 is in the form of a boss projecting from the corresponding lateral arm 26 of the sliding arm 13, and, more precisely, on an extension 54 thereof.
  • this lug 40 has a rectangular cross section, with two faces parallel to the laying plane P2 and two faces perpendicular thereto.
  • the carriage 15 To support the gliding arm 13 in its tilted installation position, the carriage 15 carries a stop 56 adjustable in position perpendicular to the installation plane P2.
  • this stop 56 is constituted by the end of a screw passing, perpendicular to this laying plane P2, the boss 47 of one of the slides 28 constituting the carriage 15.
  • the gliding arm 13 is brought into abutment against this stop 56, as shown in FIG. 9.
  • the gliding arm 13 extends very exactly along the laying axis A1, for a properly centered laying of the gripping block to be deposited.
  • the pawls 38 are then hooked onto the lugs 40, and, according to the methods described above, their adjustment is made in position so that the return to square 43 of their lever arm 42 is very exactly in contact, by its substantially straight flank of the corresponding face of these lugs 40.
  • the gliding arm 13 is firmly locked between two supports, one provided by the stop 56, the other provided by the pawls 38.
  • the stop 41 associated with each of the pawls 38 is simply constituted by a pin carried by the corresponding shell 18 of the frame 16.
  • the drive means used for tilting the sliding arm 13 and moving the carriage 15 comprise an electric motor 60, housed in the frame 16.
  • the transmission 17 intervening between this motor 60 and any one of the elements that constitute the sliding arm 13 and the carriage 15 is, overall, of the belt and pinion type.
  • the word belt must be understood in the broad sense, covering both cables and actual belts, and, likewise, the pinions can be constituted by simple pulleys.
  • the transmission 17 implemented in the embodiment shown comprises, on the one hand, at least one belt 61, which is in practice a toothed belt, and which is passed in endless loop on two pinions 62, 63 , one wedged on the output shaft of the motor 60, the other rotatably mounted on the frame 16, and, on the other hand, at least one cable 64, which, generally forming an endless loop, is locally passed looped on a pulley 65 fixed in rotation on the preceding pinion 63, making in practice several turns on this pulley 65.
  • the assembly extends over one of the sides of the frame 16.
  • the cable 64 is also passed locally in a loop on a deflection member 66 carried by the sliding arm 13, and, more precisely, by the corresponding lateral arm 26 thereof.
  • this return member 66 is wedged on the sliding arm 13.
  • This return member 66 is therefore coaxial with the pivot axis A2 of the sliding arm 13.
  • the two ends 68, 69 of the cable 64 are both coupled to the sliding arm 16, for example using a pin 67, after passing over the return member 66.
  • the cable 64 extends parallel to the direction of movement D of the carriage 15 on either side of the return member 66.
  • the corresponding strands extend on the same side of the deflection member 66, being both in a plane parallel to the laying plane P2, in the immediate vicinity of this laying plane P2 .
  • the force to which the carriage 15 is subjected, by means of the sliding arm 13, due to the cable 64, therefore extends as close as possible to the direction of movement D of this carriage 15, parallel to the latter, for the benefit of the overall performance.
  • the cable 64 passes over other return members 70, 71, 72, all carried by the frame 16.
  • the two return members 70, 71 are aligned with the return member 66 carried by the gliding arm 13, being each respectively arranged on either side thereof.
  • the deflection member 70 which is disposed opposite the drive pulley 65, is in practice carried by an arm 74 attached to the frame 16, on the one hand, to take account of the transverse offset induced by this pulley d 'drive 65 due to the multiple turns on it of the cable 64, and, on the other hand, to be spaced from the frame 16 and thus allow the passage between it and him of the glider arm 13 when the latter is in position tilted installation.
  • the return member 71 is itself directly carried by the frame 16.
  • the return member 72 As for the return member 72, it is carried by a slide 75 mounted adjustable in position on the frame 16 to form a tensioner.
  • the cable 64 generally forms a rectangular loop, at the angles of which extend, in addition to the drive pulley 65, the return members 70, 71, 72.
  • these return members 70, 71, 72 are each constituted by a rotary pulley.
  • the cable 64 thus used extends in two planes P3, P4, which, both perpendicular to the laying plane P2, are offset l relative to each other along the pivot axis A2 of the gliding arm 13, the passage from one to the other of these planes P3, P4 taking place, on the one hand, on the member of return 66 carried by the gliding arm 13, and, on the other hand, on the drive pulley 65 on which the cable 64 makes several turns.
  • the two strands of the cable 64 bypassing such a return member 70, 71, 72 advantageously extend one and the other in a plane perpendicular to the axis of rotation of this organ of reference 70, 71, 72, for the benefit of a minimization of the corresponding friction, and therefore of the longevity of the cable 64.
  • two cables 64 are used on either side of the frame 16, one per lateral arm 26 of the glider arm 13, and, likewise, in the embodiment shown, it is put using two toothed belts 61.
  • the drive means associated with the sliding arm 13 and the carriage 15 comprise, in addition to the motor 60, elastic means intended to overcome, for the rest position of the carriage 15, the elastic force due to the springs 52 constituting the elastic return means of the pawls 38, and thus to allow the effective release of the sliding arm 13.
  • At least one spring 80 which, coupled, at one of its ends, to a lug 81 provided for this purpose projecting from the frame 16, of a side of the latter, is coupled, at its other end, to the corresponding slide 28 of the carriage 15, by means of the screw forming the stop 56 carried by this slide 28, after passing over two return members 83, 84, which are both rotatably mounted on the frame 16, and one of which, the return member 84, is coaxial with the return member 71 of the corresponding cable 64.
  • two springs 80 can be provided, being arranged, each respectively, on either side of the frame 16.
  • a stop 85 is provided on the frame 16.
  • a stop 86 is provided on the frame 16.
  • the gliding arm 13 When the gliding arm 13 is thus in the raised loading position, it acts on a microswitch 88 to which the power supply to the electric motor 60 is controlled.
  • lighting means comprising a lamp 89 with which it is associated, to direct its beam on the plate 12, a deflection mirror, not visible in the figures , and a lens 90.
  • the engine 60 is started.
  • the cables 64 duly driven by the toothed belts 61, cause a rotation of the gliding arm 13 by a quarter of a turn, which results in the passage in the tilted position of laying it , with the support of its lateral arms 26 on the corresponding stops 56 provided for them on the carriage 15.
  • the cables 64 then cause the carriage 15 to move in the direction of its end-of-travel position.
  • the barycenter of the faces in contact between the square return 43 of these pawls 38 and the lugs 40 of the gliding arm 13 is then located beyond the pivot axis A3 of these pawls 38 by compared to their engagement movement on these lugs 40.
  • the movement of the carriage 15 continues until the gripping block carried by the gliding arm 13 is effectively applied to the spectacle lens 11 to be fitted.
  • the installation of the gripping block is advantageously carried out under rigorously controlled and safe conditions.
  • the sliding arm 13 advantageously remains in all certainty in the tilted installation position, without the risk of a premature return to the raised loading position.
  • the gliding arm 13 subjected to the stress of the cables 64 passes from its tilted laying position to its raised loading position, until its lateral arms 26 press against the corresponding stops 86.
  • the sliding arm 13 actuates the microswitch 88, thereby causing the motor 60 to stop.
  • the sliding arm carries with it the spectacle lens when the carriage returns from its end-of-travel position to its rest position, and the initial loading raised position of this gliding arm then becomes for this spectacle lens an unloading position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Abstract

The invention concerns a device in which a blocking arm (13) is mounted on a carriage (15) in such a way that it pivots between a raised loading position and a pivoted fitting position. According to the invention, between the blocking arm (13) and the carriage (15) there are pawl-type engagement means (38, 40) capable of a releasable locking of this blocking arm (13) on this carriage (15) when it is in the pivoted fitting position. Application to the blocking of any grasping stud on a spectacle lens workpiece. <IMAGE>

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 précisément le cas où cette pose est effectuée à l'aide d'un dispositif, communément appelé dispositif de glantage.It relates more precisely to the case where this pose is carried out using a device, commonly called a gliding device.

Plus précisément, encore, la présente invention concerne le cas où, suivant des dispositions du type de celles décrites dans la demande de brevet français, non encore publiée, déposée par la demanderesse le 29 Septembre 1989 sous le No 89 12735, le dispositif de glantage ainsi mis en oeuvre comporte, pour la pose d'un bloc de préhension sur un verre de lunettes disposé en attente sur une platine portée par un bâti, un bras de glantage, qui est adapté à recevoir, de manière amovible, le bloc de préhension à poser, un chariot, sur lequel le bras de glantage est monté pivotant entre deux positions extrêmes, l'une, relevée, de chargement, l'autre, basculée, de pose, et qui est lui-même mobile de manière rectiligne sur le bâti entre deux positions extrêmes, l'une, reculée, de repos, l'autre, avancée, de fin de course, des moyens d'entraînement, et, intervenant entre lesdits moyens d'entraînement et l'un quelconque au moins des éléments que constituent le bras de glantage et le chariot, une transmission dont il résulte que, au moins lorsque le chariot est au voisinage de sa position de fin de course, le bras de glantage est en position basculée de pose.More precisely, again, the present invention relates to the case where, according to provisions of the type of those described in the French patent application, not yet published, filed by the applicant on September 29, 1989 under No. 89 12735, the glantage device thus implemented comprises, for the installation of a gripping block on a spectacle lens arranged in standby on a plate carried by a frame, a gliding arm, which is adapted to receive, in a removable manner, the gripping block to be placed, a carriage, on which the sliding arm is pivotally mounted between two extreme positions, one raised, loading, the other tilted, laying, and which is itself movable rectilinearly on the frame between two extreme positions, one, moved back, at rest, the other, advanced, at the end of the race, of the drive means, and, acting between said drive means and at least any one of the that constitute the arm and the carriage, a transmission from which it follows that, at least when the carriage is in the vicinity of its end-of-travel position, the sliding arm is in the tilted position for installation.

Ainsi, le pivotement du bras de glantage et le déplacement du chariot résultent avantageusement d'un même mouvement, induit par les moyens d'entraînement, le bras de glantage passant à sa position basculée de pose avant que le chariot ne se déplace en direction de sa position avancée de fin de course ou au cours de ce déplacement, et revenant normalement en position relevée de chargement au terme du retour du chariot à sa position reculée de repos.Thus, the pivoting of the sliding arm and the movement of the carriage advantageously result from the same movement, induced by the drive means, the sliding arm passing to its tilted laying position before the carriage moves in the direction of its advanced end-of-travel position or during this movement, and returning normally in the raised loading position after the carriage returns to its retracted rest position.

Cette disposition donne satisfaction.This arrangement is satisfactory.

Mais il s'avère que, au moins dans certains cas, il peut y avoir une certaine indécision dans la séquence effective d'exécution du pivotement du bras de glantage par rapport au déplacement du chariot.However, it turns out that, at least in some cases, there may be some indecision in the actual sequence of execution of the pivoting of the gluing arm relative to the movement of the carriage.

Or, si, par exemple, le bras de glantage vient à se relever prématurément, par exemple dès l'amorce du mouvement de retour du chariot, il y a le risque d'une interférence intempestive entre ce bras de glantage et le verre de lunettes sur lequel il vient de poser un bloc de préhension.However, if, for example, the sliding arm comes to rise prematurely, for example from the start of the carriage return movement, there is the risk of untimely interference between this sliding arm and the spectacle lens on which he has just placed a gripping block.

Il peut en résulter une chute de ce verre de lunettes, et, partant, son bris.This may result in a fall of this spectacle lens, and hence its breakage.

La présente invention a d'une manière générale pour objet une disposition permettant d'éviter cet inconvénient et conduisant à d'autres avantages.The present invention generally relates to a provision making it possible to avoid this drawback and leading to other advantages.

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 portée par un bâti, un bras de glantage, qui est adapté à recevoir, de manière amovible, le bloc de préhension à poser, un chariot, sur lequel le bras de glantage est monté pivotant entre deux positions extrêmes, l'une, relevée, de chargement, l'autre, basculée, de pose, et qui est lui-même monté mobile de manière rectiligne sur le bâti entre deux positions extrêmes, l'une, reculée, de repos, l'autre, avancée, de fin de course, des moyens d'entraînement, et, intervenant entre lesdits moyens d'entraînement et l'un quelconque au moins des éléments que constituent le bras de glantage et le chariot, une transmission dont il résulte que, au moins lorsque le chariot est au voisinage de sa position de fin de course, le bras de glantage est en position basculée de pose, ce dispositif de glantage étant d'une manière générale caractérisé en ce que, entre le bras de glantage et le chariot, interviennent des moyens d'encliquetage propres à un verrouillage débrayable du bras de glantage sur le chariot lorsqu'il est en position basculée de pose.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 carried by a frame, a sliding arm, which is suitable to receive, in a removable manner, the gripping block to be placed, a carriage, on which the sliding arm is pivotally mounted between two extreme positions, one, raised, of loading, the other, tilted, of laying, and which is itself mounted movable in a rectilinear manner on the frame between two extreme positions, one, remote, at rest, the other, advanced, end of stroke, drive means, and, intervening between said means drive and any at least of the elements that constitute the sliding arm and the carriage, a transmission which results in that, at least when the carriage is in the vicinity of its end position, the sliding arm is in the tilted installation position, this dispositi f of gliding being generally characterized in that, between the gliding arm and the carriage, there are latching means specific to a disengageable locking of the sliding arm on the carriage when in the tilted installation position.

En pratique, ces moyens d'encliquetage étendent leurs effets tout au long du déplacement, dans un sens ou dans l'autre, du chariot.In practice, these latching means extend their effects throughout the movement, in one direction or the other, of the carriage.

Quoi qu'il en soit, ils empêchent avantageusement le bras de glantage de se relever prématurément après la pose du bloc de préhension.In any case, they advantageously prevent the sliding arm from raising up prematurely after the installation of the gripping block.

Ainsi, toute interférence avec le verre de lunettes sur lequel ce bloc de préhension a été posé est empêchée.Thus, any interference with the spectacle lens on which this gripping block has been placed is prevented.

En outre, suivant un développement de l'invention, il est tiré profit de ces moyens d'encliquetage pour assurer un positionnement précis du bras de glantage lorsqu'il est en position de pose.In addition, according to a development of the invention, advantage is taken of these latching means to ensure precise positioning of the gluing arm when it is in the laying position.

Ainsi, la pose du bloc de préhension peut avantageusement se faire de manière particulièrement rigoureuse, suivant une position dûment centrée par rapport au verre de lunettes à équiper.Thus, the installation of the gripping block can advantageously be done in a particularly rigorous manner, in a position duly centered relative to the spectacle lens to be fitted.

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 en élévation, suivant la flèche I de la figure 4, d'un dispositif de glantage suivant l'invention, pour la position reculée de repos de son chariot et la position relevée de chargement de son bras de glantage ;
  • la figure 2 en est une vue de dessus, suivant la flèche II de la figure 1 ;
  • la figure 3 en est une vue en coupe transversale, suivant la ligne brisée III-III de la figure 1 ;
  • la figure 4 en est une vue latérale, suivant la flèche IV de la figure 1 ;
  • la figure 5 reprend, à échelle supérieure, le détail de la figure 3 repéré par un encart V sur cette figure 3 ;
  • la figure 6 reprend, à échelle supérieure, le détail de la figure 4 repéré par un encart VI sur cette figure 4 ;
  • la figure 7 est une vue schématique en perspective d'une partie de la transmission mise en oeuvre dans le dispositif de glantage suivant l'invention ;
  • la figure 8 est une vue partielle en perspective relative à l'un des coulisseaux constitutifs du chariot que comporte ce dispositif de glantage ;
  • la figure 9 est une vue latérale, qui, reprenant pour partie celle de la figure 4, illustre la position avancée de fin de course de son chariot et la position basculée de pose de son bras de glantage.
The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended schematic drawings in which:
  • Figure 1 is an elevational view, along arrow I of Figure 4, of a gliding device according to the invention, for the retracted rest position of its carriage and the raised loading position of its gliding arm;
  • Figure 2 is a top view, along arrow II of Figure 1;
  • Figure 3 is a cross-sectional view along the broken line III-III of Figure 1;
  • Figure 4 is a side view, along arrow IV of Figure 1;
  • Figure 5 shows, on a larger scale, the detail of Figure 3 identified by an insert V in this Figure 3;
  • Figure 6 shows, on a larger scale, the detail of Figure 4 identified by an insert VI in this Figure 4;
  • Figure 7 is a schematic perspective view of part of the transmission implemented in the gliding device according to the invention;
  • Figure 8 is a partial perspective view relating to one of the sliders constituting the carriage that includes this gliding device;
  • Figure 9 is a side view, which, partly taking that of Figure 4, illustrates the advanced position of the end of travel of its carriage and the tilted position of installation of its gloving arm.

Tel qu'illustré par ces figures, le dispositif de glantage 10 suivant l'invention comporte, pour la pose d'un bloc de préhension, non représenté, sur un verre de lunettes 11 disposé en attente sur une platine 12, tel que schématisé en traits interrompus sur la figure 4, un bras de glantage 13, qui est adapté à recevoir, de manière amovible, ce bloc de préhension, en présentant pour ce faire un réceptacle 14, figures 1 et 3, un chariot 15, sur lequel le bras de glantage 13 est monté pivotant entre deux positions extrêmes, l'une, relevée, de chargement, figures 1 à 4, l'autre, basculée, de pose, figure 9, et qui est lui-même monté mobile de manière rectiligne sur un bâti 16, entre deux positions extrêmes, l'une, reculée, de repos, figures 1 à 4, l'autre, avancée, de fin de course, figure 9, des moyens d'entraînement, détaillés ultérieurement, et, intervenant entre ces moyens d'entraînement et l'un quelconque au moins des éléments que constituent le bras de glantage 13 et le chariot 15, une transmission 17, qui sera également détaillée ultérieurement, et dont il résulte que, au moins lorsque le chariot 15 est au voisinage de sa position avancée de fin de course, le bras de glantage 13 est en position basculée de pose, tel que représenté à la figure 9.As illustrated by these figures, the gliding device 10 according to the invention comprises, for the installation of a gripping block, not shown, on a spectacle lens 11 placed waiting on a plate 12, as shown schematically in broken lines in Figure 4, a gliding arm 13, which is adapted to receive, removably, this gripping block, presenting for this purpose a receptacle 14, Figures 1 and 3, a carriage 15, on which the arm glantage 13 is pivotally mounted between two extreme positions, one, raised, loading, Figures 1 to 4, the other, tilted, laying, Figure 9, and which is itself mounted movable rectilinearly on a frame 16, between two extreme positions, one, moved back, at rest, FIGS. 1 to 4, the other, advanced, at the end of the race, FIG. 9, drive means, detailed later, and intervening between these drive means and at least any one of the elements that constitute the arm d e glantage 13 and the carriage 15, a transmission 17, which will also be detailed later, and from which it follows that, at least when the carriage 15 is in the vicinity of its advanced end-of-travel position, the gliding arm 13 is in position tilted installation, as shown in Figure 9.

Dans la forme de réalisation représentée, et suivant un aspect de l'invention, le bâti 16 est constitué, de manière particulièrement rigide, de deux coquilles 18, qui, dûment affrontées l'une à l'autre, suivant un plan P1 contenant l'axe de pose A1, c'est-à-dire l'axe suivant lequel doit se faire la pose du bloc de préhension, sont de place en place dûment attelées l'une à l'autre par des tirants 20.In the embodiment shown, and according to one aspect of the invention, the frame 16 is made, in a particularly rigid manner, of two shells 18, which, duly facing one another, along a plane P1 containing l the laying axis A1, that is to say the axis along which the gripping block must be laid, are from place to place duly coupled to one another by tie rods 20.

Globalement, figure 4, ce bâti 16 comporte un piétement 21, par lequel il peut être rapporté directement, ou indirectement, par l'intermédiaire d'entretoises sur un quelconque support, par exemple le bâti d'un appareil de lecture de contour, une tête 22, sur laquelle interviennent le bras de glantage 13 et le chariot 15, et, reliant l'un à l'autre ce piétement 21 et cette tête 22, un corps 23.Overall, FIG. 4, this frame 16 comprises a base 21, by which it can be attached directly, or indirectly, by means of spacers on any support, for example the frame of a contour reading device, a head 22, on which the sliding arm 13 and the carriage 15 intervene, and, connecting this base 21 and this head 22 to each other, a body 23.

Dans la forme de réalisation représentée, le bras de glantage 13 est en forme d'étrier.In the embodiment shown, the gliding arm 13 is in the form of a stirrup.

Il présente, ainsi, une partie médiane 25, qui est équipée, en façade, du réceptacle 14, et deux bras latéraux 26, par lesquels il encadre la tête 22 du bâti 16.It thus has a middle part 25, which is equipped, on the front, with the receptacle 14, and two lateral arms 26, by which it frames the head 22 of the frame 16.

Suivant des dispositions qui, ne relevant pas de la présente invention, ne seront pas décrites ici, le bras de glantage 13 porte, également, dans sa partie médiane 25, deux éjecteurs 27, qui, disposés chacun respectivement de part et d'autre du réceptacle 14, sont destinés à venir porter sur le verre de lunettes 11 pour le maintien de celui-ci sur la platine 12 lors du mouvement de retour du chariot 15 de sa position avancée de fin de course à sa position reculée de repos.According to arrangements which, not falling within the scope of the present invention, will not be described here, the sliding arm 13 also carries, in its middle part 25, two ejectors 27, which, each arranged respectively on either side of the receptacle 14, are intended to come to bear on the spectacle lens 11 for the maintenance of the latter on the plate 12 during the return movement of the carriage 15 from its advanced end-of-travel position to its retracted position of rest.

Dans la forme de réalisation représentée, et suivant un aspect de l'invention, le chariot 15 se réduit à deux coulisseaux 28, à raison d'un par bras latéral 26 du bras de glantage 13, et ces coulisseaux 28, qui ont chacun un contour globalement rectangulaire, sont chacun individuellement montés mobiles dans deux rainures 30 prévues à cet effet sur le bâti 16.In the embodiment shown, and according to one aspect of the invention, the carriage 15 is reduced to two slides 28, one per lateral arm 26 of the glider arm 13, and these slides 28, which each have a generally rectangular outline, are each individually mounted mobile in two grooves 30 provided for this purpose on the frame 16.

En pratique, ces rainures 30 affectent chacune respectivement les coquilles 18 constitutives de ce bâti 16, sur la surface extérieure de celles-ci, et pour la retenue des coulisseaux 28, il est rapporté, sur ces coquilles 18, de part et d'autre des rainures 30, des plaquettes 31 qui referment partiellement celles-ci.In practice, these grooves 30 each affect respectively the shells 18 constituting this frame 16, on the outer surface thereof, and for the retention of the slides 28, it is reported, on these shells 18, on either side grooves 30, plates 31 which partially close them.

Soit D la direction de déplacement des coulisseaux 28.Let D be the direction of movement of the slides 28.

Ramenée au chariot 15 qu'ils forment, elle se confond avec l'axe de pose A1.Returned to the carriage 15 which they form, it merges with the laying axis A1.

Pour le montage pivotant du bras de glantage 13 sur le chariot 15, chacun des bras latéral 26 de ce bras de glantage 13 forme, localement, un moyeu 32 par lequel il est engagé à tourillonnement, avec interposition d'un roulement 33, sur un bossage cylindrique 34 prévu localement en saillie à cet effet sur le coulisseau 28 correspondant.For the pivoting mounting of the sliding arm 13 on the carriage 15, each of the lateral arms 26 of this sliding arm 13 locally forms a hub 32 by which it is engaged in journalling, with the interposition of a bearing 33, on a cylindrical boss 34 provided locally projecting for this purpose on the corresponding slide 28.

Pour chaque bras latéral 26 du bras de glantage 13, une vis 36 assure la sécurité du montage correspondant.For each lateral arm 26 of the sliding arm 13, a screw 36 ensures the security of the corresponding assembly.

Pour l'un des roulements 33 en cause, la cage interne de ce roulement 33 est bloquée par cette vis 36, tandis que pour l'autre, elle est libre, les éventuels jeux de montage entre les divers constituants en cause s'empilant ainsi tous à partir de la première de ces cages.For one of the bearings 33 in question, the internal cage of this bearing 33 is blocked by this screw 36, while for the other, it is free, the possible mounting clearances between the various constituents in question thus piling up all from the first of these cages.

Soit A2 l'axe de pivotement du bras de glantage 13 sur le chariot 15.Let A2 be the pivot axis of the gliding arm 13 on the carriage 15.

Il est orthogonal à la direction de déplacement D de ce chariot 15.It is orthogonal to the direction of movement D of this carriage 15.

Soit P2, ou plan de pose, le plan qu'il forme avec cette dernière.Let P2, or laying plane, be the plane it forms with the latter.

Suivant l'invention, entre le bras de glantage 13 et le chariot 15, interviennent des moyens d'encliquetage propres à un verrouillage débrayable de ce bras de glantage 13 sur ce chariot 15 lorsqu'il est en position basculée de pose.According to the invention, between the sliding arm 13 and the carriage 15, there are latching means specific to a disengageable locking of this sliding arm 13 on this carriage 15 when it is in the tilted installation position.

Dans la forme de réalisation représentée, ces moyens d'encliquetage comportent au moins un cliquet 38, qui, porté par l'un quelconque des éléments que constituent le bras de glantage 13 et le chariot 15, est monté pivotant sur celui-ci, un ergot 40, qui, en saillie sur l'autre de ces éléments, est interposé sur le trajet du cliquet 38, des moyens élastiques de rappel, explicités ultérieurement, qui sollicitent en permanence le cliquet 38 en direction d'une position active pour laquelle, tel que représenté à la figure 9, il est apte à se crocheter sur l'ergot 40, et, pour retenue du cliquet 38 en position inactive, à distance de l'ergot 40, lorsque, tel que représenté sur les figures 1 à 4, le chariot 15 est en position reculée de repos, une butée 41, qui, portée par le bâti 16, est, elle aussi, interposée sur le trajet du cliquet 38, de l'autre côté de celui-ci par rapport à l'ergot 40.In the embodiment shown, these latching means comprise at least one pawl 38, which, carried by any of the elements that constitute the gliding arm 13 and the carriage 15, is pivotally mounted on it, a lug 40, which, projecting from the other of these elements, is interposed on the path of the pawl 38, elastic return means, explained later, which permanently urge the pawl 38 towards an active position for which, as shown in Figure 9, it is capable of hooking on the lug 40, and, for retaining the pawl 38 in the inactive position, away from the lug 40, when, as shown in Figures 1 to 4 , the carriage 15 is in the retracted rest position, a stop 41 which, carried by the frame 16, is also interposed on the path of the pawl 38, on the other side of it relative to the lug 40.

En pratique, dans cette forme de réalisation, et suivant des modalités décrites plus en détail ultérieurement, le cliquet 38 est porté par le chariot 15, l'ergot 40 associé est en saillie sur le bras de glantage 13, et il y a ainsi deux cliquets 38, à raison d'un par bras latéral 26 du bras de glantage 13, et, en correspondance, deux ergots 40.In practice, in this embodiment, and according to methods described in more detail later, the pawl 38 is carried by the carriage 15, the associated lug 40 protrudes from the gliding arm 13, and there are thus two pawls 38, one for each lateral arm 26 of the sliding arm 13, and, in correspondence, two lugs 40.

Soit A3 l'axe de pivotement des cliquets 38 sur le chariot 15.Let A3 be the pivot axis of the pawls 38 on the carriage 15.

Il est parallèle à l'axe de pivotement A2 du bras de glantage 13 sur le chariot 15, et, comme ce dernier, il s'étend dans le plan de pose P2.It is parallel to the pivot axis A2 of the sliding arm 13 on the carriage 15, and, like the latter, it extends in the laying plane P2.

En pratique, et pour des raisons qui apparaîtront ultérieurement, les cliquets 38 sont chacun montés réglables en position sur le chariot 15, perpendiculairement au plan de pose P2, c'est-à-dire au plan contenant la direction de déplacement D de ce chariot 15 et l'axe de pivotement A2 du bras de glantage 13.In practice, and for reasons which will appear later, the pawls 38 are each mounted adjustable in position on the carriage 15, perpendicular to the laying plane P2, that is to say to the plane containing the direction of movement D of this carriage 15 and the pivot axis A2 of the sliding arm 13.

En pratique, également, les deux cliquets 38 sont chacun respectivement portés par les deux coulisseaux 28 constituant le chariot 15.In practice, too, the two pawls 38 are each respectively carried by the two slides 28 constituting the carriage 15.

Ils se présentent sous la forme de plaquettes qui s'étendent parallèlement à ces coulisseaux 28, et ils comportent chacun un bras de levier 42, qui, à son extrémité, présente un retour en équerre 43, à flanc sensiblement droit, par lequel ils sont aptes à se crocheter sur l'ergot 40 associé, une partie médiane 44, par laquelle ils sont engagés à pivotement sur un moyeu 45, dûment épaulé, porté par le coulisseau 28 correspondant, et un bras de levier 46, qui, aligné avec le bras de levier 42 précédent, s'étend de l'autre côté de la partie médiane 44 par rapport à celui-ci, et par lequel ils sont aptes à être actionnés par la butée 41 correspondante.They are in the form of plates which extend parallel to these slides 28, and they each comprise a lever arm 42, which, at its end, has a square return 43, with a substantially straight flank, by which they are able to be hooked onto the associated lug 40, a central part 44, by which they are pivotally engaged on a hub 45, duly shouldered, carried by the corresponding slide 28, and a lever arm 46, which, aligned with the lever lever 42 above, extends on the other side of the middle portion 44 relative thereto, and by which they are adapted to be actuated by the corresponding stop 41.

Leur moyeu 45 traverse le coulisseau 28 concerné du chariot 15, à la faveur d'un bossage 47 épaississant localement ce coulisseau 28.Their hub 45 passes through the concerned slide 28 of the carriage 15, by means of a boss 47 locally thickening this slide 28.

Pour cette traversée, ce bossage 47 présente un perçage 48 allongé en boutonnière perpendiculairement au plan de pose P2, figure 5.For this crossing, this boss 47 has a hole 48 elongated in a buttonhole perpendicular to the laying plane P2, FIG. 5.

C'est de l'allongement de ce perçage 48 que dépend la possibilité de réglage en position des cliquets 38.The possibility of adjusting the pawls 38 depends on the elongation of this bore 48.

Un tirant fileté 50, à vis et écrou, assure la sécurité du montage correspondant.A threaded tie rod 50, with screw and nut, ensures the safety of the corresponding assembly.

Il suffit d'en serrer la vis pour que le moyeu 45 portant un cliquet 38 soit dûment bloqué en position sur le coulisseau 28 qui le porte.It suffices to tighten the screw so that the hub 45 carrying a pawl 38 is duly locked in position on the slide 28 which carries it.

En pratique, les moyens élastiques de rappel associés à un tel cliquet 38 sont constitués par un ressort de torsion 52, dont la partie médiane de torsion est engagée sur le moyeu 45 et dont un bras est crocheté sur le cliquet 38 tandis que l'autre est crocheté sur le coulisseau 28 correspondant.In practice, the elastic return means associated with such a pawl 38 are constituted by a torsion spring 52, the median torsion part of which is engaged on the hub 45 and one arm of which is hooked onto the pawl 38 while the other is hooked on the corresponding slide 28.

Conjointement, l'ergot 40 associé à chacun des cliquets 38 se présente sous la forme d'un bossage faisant saillie sur le bras latéral 26 correspondant du bras de glantage 13, et, plus précisément, sur un prolongement 54 de celui-ci.Jointly, the lug 40 associated with each of the pawls 38 is in the form of a boss projecting from the corresponding lateral arm 26 of the sliding arm 13, and, more precisely, on an extension 54 thereof.

En pratique, cet ergot 40 a une section transversale rectangulaire, avec deux faces parallèles au plan de pose P2 et deux faces perpendiculaires à celui-ci.In practice, this lug 40 has a rectangular cross section, with two faces parallel to the laying plane P2 and two faces perpendicular thereto.

C'est par l'une de ses faces parallèles au plan de pose P2 qu'un tel ergot 40 est apte à coopérer en crochetage avec le cliquet 38 associé.It is by one of its faces parallel to the laying plane P2 that such a lug 40 is able to cooperate in hooking with the associated pawl 38.

Pour appui du bras de glantage 13 dans sa position basculée de pose, le chariot 15 porte une butée 56 réglable en position perpendiculairement au plan de pose P2.To support the gliding arm 13 in its tilted installation position, the carriage 15 carries a stop 56 adjustable in position perpendicular to the installation plane P2.

En pratique, cette butée 56 est constituée par l'extrémité d'une vis traversant, perpendiculairement à ce plan de pose P2, le bossage 47 de l'un des coulisseaux 28 constitutifs du chariot 15.In practice, this stop 56 is constituted by the end of a screw passing, perpendicular to this laying plane P2, the boss 47 of one of the slides 28 constituting the carriage 15.

Au montage, le bras de glantage 13 est amené en appui contre cette butée 56, tel que représenté sur la figure 9.During assembly, the gliding arm 13 is brought into abutment against this stop 56, as shown in FIG. 9.

Il est alors procédé à un réglage de celle-ci de manière à ce que, dans la position basculée de pose qui est alors la sienne, le bras de glantage 13 s'étende très exactement suivant l'axe de pose A1, pour une pose convenablement centrée du bloc de préhension à déposer.There is then an adjustment thereof so that, in the tilted position of laying which is then hers, the gliding arm 13 extends very exactly along the laying axis A1, for a properly centered laying of the gripping block to be deposited.

Les cliquets 38 sont alors crochetés sur les ergots 40, et, suivant les modalités décrites précédemment, il est procédé à leur réglage en position de manière à ce que le retour en équerre 43 de leur bras de levier 42 soit très exactement au contact, par son flanc sensiblement droit, de la face correspondante de ces ergots 40.The pawls 38 are then hooked onto the lugs 40, and, according to the methods described above, their adjustment is made in position so that the return to square 43 of their lever arm 42 is very exactly in contact, by its substantially straight flank of the corresponding face of these lugs 40.

Ainsi, en position basculée de pose, le bras de glantage 13 est fermement verrouillé entre deux appuis, l'un assuré par la butée 56, l'autre assuré par les cliquets 38.Thus, in the tilted installation position, the gliding arm 13 is firmly locked between two supports, one provided by the stop 56, the other provided by the pawls 38.

Enfin, dans la forme de réalisation représentée, la butée 41 associée à chacun des cliquets 38 est simplement constituée par une goupille portée par la coquille 18 correspondante du bâti 16.Finally, in the embodiment shown, the stop 41 associated with each of the pawls 38 is simply constituted by a pin carried by the corresponding shell 18 of the frame 16.

Les moyens d'entraînement mis en oeuvre pour le basculement du bras de glantage 13 et le déplacement du chariot 15 comportent un moteur électrique 60, logé dans le bâti 16.The drive means used for tilting the sliding arm 13 and moving the carriage 15 comprise an electric motor 60, housed in the frame 16.

La transmission 17 intervenant entre ce moteur 60 et l'un quelconque des éléments que constituent le bras de glantage 13 et le chariot 15 est, globalement, du type à courroie(s) et pignons.The transmission 17 intervening between this motor 60 and any one of the elements that constitute the sliding arm 13 and the carriage 15 is, overall, of the belt and pinion type.

Bien entendu, le mot courroie doit être entendu au sens large, en couvrant aussi bien les câbles que des courroies proprement dites, et, de même, les pignons peuvent être constitués par de simples poulies.Of course, the word belt must be understood in the broad sense, covering both cables and actual belts, and, likewise, the pinions can be constituted by simple pulleys.

De fait, la transmission 17 mise en oeuvre dans la forme de réalisation représentée comporte, d'une part, au moins une courroie 61, qui est en pratique une courroie crantée, et qui est passée en boucle sans fin sur deux pignons 62, 63, l'un calé sur l'arbre de sortie du moteur 60, l'autre monté rotatif sur le bâti 16, et, d'autre part, au moins un câble 64, qui, formant globalement une boucle sans fin, est localement passé en boucle sur une poulie 65 calée en rotation sur le pignon 63 précédent, en faisant en pratique plusieurs tours sur cette poulie 65.In fact, the transmission 17 implemented in the embodiment shown comprises, on the one hand, at least one belt 61, which is in practice a toothed belt, and which is passed in endless loop on two pinions 62, 63 , one wedged on the output shaft of the motor 60, the other rotatably mounted on the frame 16, and, on the other hand, at least one cable 64, which, generally forming an endless loop, is locally passed looped on a pulley 65 fixed in rotation on the preceding pinion 63, making in practice several turns on this pulley 65.

Celle-ci fait office de poulie d'entraînement pour lui.This acts as a drive pulley for him.

L'ensemble s'étend sur l'un des côtés du bâti 16.The assembly extends over one of the sides of the frame 16.

Le câble 64 est également passé localement en boucle sur un organe de renvoi 66 porté par le bras de glantage 13, et, plus précisément, par le bras latéral 26 correspondant de celui-ci.The cable 64 is also passed locally in a loop on a deflection member 66 carried by the sliding arm 13, and, more precisely, by the corresponding lateral arm 26 thereof.

En pratique, cet organe de renvoi 66 est calé sur le bras de glantage 13.In practice, this return member 66 is wedged on the sliding arm 13.

Par exemple, et tel que représenté, il est très simplement formé par un prolongement tubulaire du moyeu 32 du bras latéral 26 correspondant de celui-ci.For example, and as shown, it is very simply formed by a tubular extension of the hub 32 of the corresponding side arm 26 thereof.

Cet organe de renvoi 66 est donc coaxial de l'axe de pivotement A2 du bras de glantage 13.This return member 66 is therefore coaxial with the pivot axis A2 of the sliding arm 13.

En pratique, les deux extrémités 68, 69 du câble 64 sont l'une et l'autre attelées au bras de glantage 16, par exemple à l'aide d'un pion 67, après passage sur l'organe de renvoi 66.In practice, the two ends 68, 69 of the cable 64 are both coupled to the sliding arm 16, for example using a pin 67, after passing over the return member 66.

Suivant l'invention, le câble 64 s'étend parallèlement à la direction de déplacement D du chariot 15 de part et d'autre de l'organe de renvoi 66.According to the invention, the cable 64 extends parallel to the direction of movement D of the carriage 15 on either side of the return member 66.

En pratique, les brins correspondants s'étendent d'un même côté de l'organe de renvoi 66, en étant l'un et l'autre dans un plan parallèle au plan de pose P2, à proximité immédiate de ce plan de pose P2.In practice, the corresponding strands extend on the same side of the deflection member 66, being both in a plane parallel to the laying plane P2, in the immediate vicinity of this laying plane P2 .

L'effort auquel est soumis, par l'intermédiaire du bras de glantage 13, le chariot 15 du fait du câble 64, s'étend donc au plus près de la direction de déplacement D de ce chariot 15, parallèlement à celle-ci, au bénéfice du rendement de l'ensemble.The force to which the carriage 15 is subjected, by means of the sliding arm 13, due to the cable 64, therefore extends as close as possible to the direction of movement D of this carriage 15, parallel to the latter, for the benefit of the overall performance.

Outre l'organe de renvoi 66 porté par le bras de glantage 13 et la poulie d'entraînement 65, le câble 64 passe sur d'autres organes de renvoi 70, 71, 72, tous portés par le bâti 16.In addition to the return member 66 carried by the gliding arm 13 and the drive pulley 65, the cable 64 passes over other return members 70, 71, 72, all carried by the frame 16.

Les deux organes de renvoi 70, 71 sont alignés avec l'organe de renvoi 66 porté par le bras de glantage 13, en étant chacun respectivement disposés de part et d'autre de celui-ci.The two return members 70, 71 are aligned with the return member 66 carried by the gliding arm 13, being each respectively arranged on either side thereof.

L'organe de renvoi 70, qui est disposé en regard de la poulie d'entraînement 65, est en pratique porté par un bras 74 rapporté sur le bâti 16, d'une part, pour tenir compte du décalage transversal induit par cette poulie d'entraînement 65 du fait des multiples tours sur elle du câble 64, et, d'autre part, pour être écarté du bâti 16 et ainsi permettre le passage entre celui-ci et lui du bras de glantage 13 lorsque celui-ci est en position basculée de pose.The deflection member 70, which is disposed opposite the drive pulley 65, is in practice carried by an arm 74 attached to the frame 16, on the one hand, to take account of the transverse offset induced by this pulley d 'drive 65 due to the multiple turns on it of the cable 64, and, on the other hand, to be spaced from the frame 16 and thus allow the passage between it and him of the glider arm 13 when the latter is in position tilted installation.

L'organe de renvoi 71 est, lui, directement porté par le bâti 16.The return member 71 is itself directly carried by the frame 16.

Quant à l'organe de renvoi 72, il est porté par un coulisseau 75 monté réglable en position sur le bâti 16 pour former tendeur.As for the return member 72, it is carried by a slide 75 mounted adjustable in position on the frame 16 to form a tensioner.

Il résulte de ce qui précède que le câble 64 forme globalement une boucle rectangulaire, aux angles de laquelle s'étendent, outre la poulie d'entraînement 65, les organes de renvoi 70, 71, 72.It follows from the above that the cable 64 generally forms a rectangular loop, at the angles of which extend, in addition to the drive pulley 65, the return members 70, 71, 72.

En pratique, ces organes de renvoi 70, 71, 72 sont chacun constitués par une poulie rotative.In practice, these return members 70, 71, 72 are each constituted by a rotary pulley.

Comme la poulie d'entraînement 65, ils sont tous contournés par l'extérieur par le câble 64, en s'étendant tous à l'intérieur de la boucle formée par celui-ci.Like the drive pulley 65, they are all bypassed from the outside by the cable 64, all extending inside the loop formed by the latter.

Il n'est corollairement prévu aucun organe de renvoi sur le chariot 15.As a corollary, no return member is provided on the carriage 15.

Tel qu'il est plus apparent sur les figures 1 et 7, le câble 64 ainsi mis en oeuvre s'étend dans deux plans P3, P4, qui, l'un et l'autre perpendiculaires au plan de pose P2, sont décalés l'un par rapport à l'autre suivant l'axe de pivotement A2 du bras de glantage 13, le passage de l'un à l'autre de ces plans P3, P4 se faisant, d'une part, sur l'organe de renvoi 66 porté par le bras de glantage 13, et, d'autre part, sur la poulie d'entraînement 65 sur laquelle le câble 64 fait plusieurs tours.As is more apparent in FIGS. 1 and 7, the cable 64 thus used extends in two planes P3, P4, which, both perpendicular to the laying plane P2, are offset l relative to each other along the pivot axis A2 of the gliding arm 13, the passage from one to the other of these planes P3, P4 taking place, on the one hand, on the member of return 66 carried by the gliding arm 13, and, on the other hand, on the drive pulley 65 on which the cable 64 makes several turns.

Ainsi, pour chacun des organes de renvoi 70, 71, 72, les deux brins du câble 64 contournant un tel organe de renvoi 70, 71, 72 s'étendent avantageusement l'un et l'autre dans un plan perpendiculaire à l'axe de rotation de cet organe de renvoi 70, 71, 72, au bénéfice d'une minimisation des frottements correspondants, et, donc, de la longévité du câble 64.Thus, for each of the return members 70, 71, 72, the two strands of the cable 64 bypassing such a return member 70, 71, 72 advantageously extend one and the other in a plane perpendicular to the axis of rotation of this organ of reference 70, 71, 72, for the benefit of a minimization of the corresponding friction, and therefore of the longevity of the cable 64.

En pratique, deux câbles 64 sont mis en oeuvre de part et d'autre du bâti 16, à raison d'un par bras latéral 26 du bras de glantage 13, et, de même, dans la forme de réalisation représentée, il est mis en oeuvre deux courroies crantées 61.In practice, two cables 64 are used on either side of the frame 16, one per lateral arm 26 of the glider arm 13, and, likewise, in the embodiment shown, it is put using two toothed belts 61.

Mais, en variante, une seule peut suffire, la poulie 65 du câble 64 situé du côté opposé n'étant alors plus pour celui-ci une poulie d'entraînement, mais un simple organe de renvoi.But, as a variant, only one may suffice, the pulley 65 of the cable 64 located on the opposite side then no longer being for the latter a drive pulley, but a simple return member.

Dans la forme de réalisation représentée, les moyens d'entraînement associés au bras de glantage 13 et au chariot 15 comportent, outre le moteur 60, des moyens élastiques destinés à surmonter, pour la position de repos du chariot 15, l'effort élastique dû aux ressorts 52 constituant les moyens élastiques de rappel des cliquets 38, et à ainsi permettre la libération effective du bras de glantage 13.In the embodiment shown, the drive means associated with the sliding arm 13 and the carriage 15 comprise, in addition to the motor 60, elastic means intended to overcome, for the rest position of the carriage 15, the elastic force due to the springs 52 constituting the elastic return means of the pawls 38, and thus to allow the effective release of the sliding arm 13.

Il s'agit, dans la forme de réalisation représentée, d'au moins un ressort 80, qui, attelé, à l'une de ses extrémités, à un ergot 81 prévu à cet effet en saillie sur le bâti 16, d'un côté de celui-ci, est attelé, à son autre extrémité, au coulisseau 28 correspondant du chariot 15, à la faveur de la vis formant la butée 56 portée par ce coulisseau 28, après passage sur deux organes de renvoi 83, 84, qui sont l'un et l'autre montés rotatifs sur le bâti 16, et dont l'un, l'organe de renvoi 84, est coaxial de l'organe de renvoi 71 du câble 64 correspondant.It is, in the embodiment shown, at least one spring 80, which, coupled, at one of its ends, to a lug 81 provided for this purpose projecting from the frame 16, of a side of the latter, is coupled, at its other end, to the corresponding slide 28 of the carriage 15, by means of the screw forming the stop 56 carried by this slide 28, after passing over two return members 83, 84, which are both rotatably mounted on the frame 16, and one of which, the return member 84, is coaxial with the return member 71 of the corresponding cable 64.

Bien entendu, deux ressorts 80 peuvent être prévus, en étant disposés, chacun respectivement, de part et d'autre du bâti 16.Of course, two springs 80 can be provided, being arranged, each respectively, on either side of the frame 16.

Pour la définition de la position reculée de repos du chariot 15, il est prévu, sur le bâti 16, une butée 85.For the definition of the retracted rest position of the carriage 15, a stop 85 is provided on the frame 16.

Dans la forme de réalisation représentée, il s'agit d'une goupille qui, en saillie sur le bâti 16, est interposée sur le trajet d'un des coulisseaux 28 constitutifs du chariot 15.In the embodiment shown, it is a pin which, projecting from the frame 16, is interposed on the path of one of the slides 28 constituting the carriage 15.

De même, pour la définition de la position relevée du bras de glantage 13, il est prévu une butée 86 sur le bâti 16.Similarly, for the definition of the raised position of the gliding arm 13, a stop 86 is provided on the frame 16.

Dans la forme de réalisation représentée, il s'agit de la tête d'une vis rapportée à cet effet sur l'un des bras 74 porteurs d'un organe de renvoi 70.In the embodiment shown, it is the head of a screw attached for this purpose on one of the arms 74 carrying a return member 70.

Lorsque le bras de glantage 13 est ainsi en position relevée de chargement, il agit sur un micro-interrupteur 88 auquel est asservie, en coupure, l'alimentation du moteur électrique 60.When the gliding arm 13 is thus in the raised loading position, it acts on a microswitch 88 to which the power supply to the electric motor 60 is controlled.

Enfin, outre ce moteur 60, il est prévu, dans le bâti 16, des moyens d'éclairage comportant une lampe 89 à laquelle il est associé, pour diriger son faisceau sur la platine 12, un miroir de renvoi, non visible sur les figures, et une lentille 90.Finally, in addition to this motor 60, there are provided, in the frame 16, lighting means comprising a lamp 89 with which it is associated, to direct its beam on the plate 12, a deflection mirror, not visible in the figures , and a lens 90.

Au repos, le chariot 15 est en position reculée de repos, en appui contre la butée 85, et, conjointement, le bras de glantage 13 est en position relevée de chargement, en appui contre la butée 86, figure 4.At rest, the carriage 15 is in the retracted position of rest, bearing against the stop 85, and, jointly, the sliding arm 13 is in the raised loading position, bearing against the stop 86, FIG. 4.

Après mise en place, dans le réceptacle 14, du bloc de préhension à poser, il est procédé à la mise en route du moteur 60.After the gripping block to be placed has been placed in the receptacle 14, the engine 60 is started.

Dans le dispositif de commande correspondant, et suivant des dispositions qui, ne relevant pas de la présente invention ne seront pas décrites ici, il est procédé, pour ce faire, à une occultation du signal de coupure alors donnée par le micro-interrupteur 88.In the corresponding control device, and in accordance with arrangements which, not falling within the scope of the present invention, will not be described here, a concealment of the cut-off signal is then given by the microswitch 88.

Dès la mise en route du moteur 60, les câbles 64, dûment entraînés par les courroies crantées 61, provoquent une rotation d'un quart de tour du bras de glantage 13, dont il résulte le passage en position basculée de pose de celui-ci, avec appui de ses bras latéraux 26 sur les butées 56 correspondantes prévues pour eux sur le chariot 15.As soon as the engine 60 is started, the cables 64, duly driven by the toothed belts 61, cause a rotation of the gliding arm 13 by a quarter of a turn, which results in the passage in the tilted position of laying it , with the support of its lateral arms 26 on the corresponding stops 56 provided for them on the carriage 15.

Poursuivant leur action, les câbles 64 provoquent ensuite le déplacement du chariot 15 en direction de sa position de fin de course.Continuing their action, the cables 64 then cause the carriage 15 to move in the direction of its end-of-travel position.

Dès le début de ce déplacement, les cliquets 38, dûment libérés, viennent se crocheter sur les ergots 40 du bras de glantage 13.From the start of this movement, the pawls 38, duly released, are hooked onto the lugs 40 of the gliding arm 13.

Ainsi qu'on le notera, le barycentre des faces en contact entre le retour en équerre 43 de ces cliquets 38 et les ergots 40 du bras de glantage 13 se situe alors au-delà de l'axe de pivotement A3 de ces cliquets 38 par rapport à leur mouvement d'engagement sur ces ergots 40.As will be noted, the barycenter of the faces in contact between the square return 43 of these pawls 38 and the lugs 40 of the gliding arm 13 is then located beyond the pivot axis A3 of these pawls 38 by compared to their engagement movement on these lugs 40.

Tout décrochage intempestif de ces cliquets 38 est ainsi évité.Any untimely detachment of these pawls 38 is thus avoided.

Le déplacement du chariot 15 se poursuit jusqu'à ce que le bloc de préhension porté par le bras de glantage 13 soit effectivement appliqué au verre de lunettes 11 à équiper.The movement of the carriage 15 continues until the gripping block carried by the gliding arm 13 is effectively applied to the spectacle lens 11 to be fitted.

Du fait, d'une part, du positionnement précis du bras de glantage 13 par rapport au chariot 15 et à son verrouillage sur celui-ci, et, d'autre part, d'une application des efforts correspondants suivant sensiblement la direction de déplacement D de ce chariot 15, la pose du bloc de préhension se fait avantageusement dans des conditions rigoureusement contrôlées et sûres.On the one hand, due to the precise positioning of the gliding arm 13 relative to the carriage 15 and to its locking thereon, and, on the other hand, of an application of the corresponding forces substantially in the direction of movement D of this carriage 15, the installation of the gripping block is advantageously carried out under rigorously controlled and safe conditions.

Après cette pose, qui marque l'arrivée du chariot 15 en position avancée de fin de course, il est procédé, suivant des dispositions qui, ne relevant pas de la présente invention, ne seront pas décrites ici, à une inversion du sens de rotation du moteur 60.After this installation, which marks the arrival of the carriage 15 in the advanced end-of-travel position, a reversal of the direction of rotation is carried out, according to arrangements which, not pertaining to the present invention, will not be described here. motor 60.

Il en résulte un déplacement en sens inverse du chariot 15, de sa position avancée de fin de course précédente à sa position reculée de repos initiale.This results in a movement in the opposite direction of the carriage 15, from its previous end-of-travel position to its remote initial rest position.

Tout au long de ce déplacement de retour, le bras glantage 13 reste avantageusement en toute certitude en position basculée de pose, sans risque d'un retour prématuré en position relevée de chargement.Throughout this return movement, the sliding arm 13 advantageously remains in all certainty in the tilted installation position, without the risk of a premature return to the raised loading position.

Peu avant l'arrivée du chariot 15 en appui contre la butée 85 définissant sa position reculée de repos, les butées 41 portées par le bâti 16 provoquent le basculement des cliquets 38.Shortly before the arrival of the carriage 15 bearing against the stop 85 defining its retracted rest position, the stops 41 carried by the frame 16 cause the pawls 38 to tilt.

Dès lors libéré, le bras de glantage 13 soumis à la sollicitation des câbles 64 passe de sa position basculée de pose à sa position relevée de chargement, jusqu'à appui de ses bras latéraux 26 contre les butées 86 correspondantes.Once released, the gliding arm 13 subjected to the stress of the cables 64 passes from its tilted laying position to its raised loading position, until its lateral arms 26 press against the corresponding stops 86.

Au terme de ce mouvement, le bras de glantage 13 vient actionner le micro-interrupteur 88, en provoquant ainsi l'arrêt du moteur 60.At the end of this movement, the sliding arm 13 actuates the microswitch 88, thereby causing the motor 60 to stop.

Un nouveau cycle de travail peut alors débuter.A new work cycle can then begin.

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.

En particulier, si dans la forme de réalisation plus particulièrement décrite et représentée, il est prévu des éjecteurs qui maintiennent le verre de lunettes sur la platine après qu'un bloc de préhension y ait été posé, il n'en est pas toujours nécessairement ainsi.In particular, if in the embodiment more particularly described and shown, there are provided ejectors which hold the spectacle lens on the plate after a gripping block has been placed there, this is not always necessarily so. .

Dans le cas, donc, où de tels éjecteurs ne sont pas prévus, le bras de glantage entraîne avec lui le verre de lunettes lorsque le chariot revient de sa position de fin de course à sa position de repos, et la position initiale relevée de chargement de ce bras de glantage devient alors pour ce verre de lunettes une position de déchargement.In the case, therefore, where such ejectors are not provided, the sliding arm carries with it the spectacle lens when the carriage returns from its end-of-travel position to its rest position, and the initial loading raised position of this gliding arm then becomes for this spectacle lens an unloading position.

Claims (16)

Dispositif de glantage du genre comportant, pour la pose d'un bloc de préhension sur un verre de lunettes (11) disposé en attente sur une platine (12), un bras de glantage (13), qui est adapté à recevoir, de manière amovible, le bloc de préhension à poser, un chariot (15), sur lequel le bras de glantage (13) est monté pivotant entre deux positions extrêmes, l'une, relevée, de chargement, l'autre, basculée, de pose, et qui est lui-même monté mobile de manière rectiligne sur un bâti (16) entre deux positions extrêmes, l'une, reculée, de repos, l'autre, avancée, de fin de course, des moyens d'entraînement (60), et, intervenant entre lesdits moyens d'entraînement (60) et l'un quelconque au moins des éléments que constituent le bras de glantage (13) et le chariot (15), une transmission (17) dont il résulte que, au moins lorsque le chariot (15) est au voisinage de sa position avancée de fin de course, le bras de glantage (13) est en position basculée de pose, caractérisé en ce que, entre le bras de glantage (13) et le chariot (15), interviennent des moyens d'encliquetage (38, 40) propres à un verrouillage débrayable dudit bras de glantage (13) sur ledit chariot (15) lorsqu'il est en position basculée de pose.A gliding device of the kind comprising, for the installation of a gripping block on a spectacle lens (11) disposed in standby on a plate (12), a gliding arm (13), which is adapted to receive, so removable, the gripping block to be placed, a carriage (15), on which the sliding arm (13) is pivotally mounted between two extreme positions, one raised, loading, the other tilted, laying, and which is itself mounted movable in a rectilinear manner on a frame (16) between two extreme positions, one, moved back, at rest, the other, advanced, end of stroke, drive means (60) , and, acting between said drive means (60) and at least any one of the elements that constitute the gliding arm (13) and the carriage (15), a transmission (17) which results in that, at least when the carriage (15) is in the vicinity of its advanced end-of-travel position, the sliding arm (13) is in the tilted installation position, caract laughed in that, between the sliding arm (13) and the carriage (15), there are latching means (38, 40) suitable for disengageable locking of said sliding arm (13) on said carriage (15) when 'it is in the tilted installation position. Dispositif de glantage suivant la revendication 1, caractérisé en ce que lesdits moyens d'encliquetage (38, 40) comportent au moins un cliquet (38), qui, porté par l'un quelconque des éléments que constituent le bras de glantage (13) et le chariot (15), est monté pivotant sur celui-ci, un ergot (40) qui, en saillie sur l'autre desdits éléments, est interposé sur le trajet dudit cliquet (38), des moyens élastiques (52), qui sollicitent en permanence ledit cliquet (38) en direction d'une position active pour laquelle il est apte à se crocheter sur ledit ergot (40), et, pour retenue dudit cliquet (38) en position inactive, à distance dudit ergot (40), lorsque le chariot (15) est en position reculée de repos, une butée (41), qui, portée par le bâti (16), est elle aussi interposée sur le trajet dudit cliquet (38), de l'autre côté de celui-ci par rapport audit ergot (40).Gliding device according to claim 1, characterized in that said latching means (38, 40) comprise at least one pawl (38), which, carried by any of the elements that constitute the gliding arm (13) and the carriage (15), is pivotally mounted thereon, a lug (40) which, projecting from the other of said elements, is interposed on the path of said pawl (38), elastic means (52), which permanently urge said pawl (38) towards an active position for which it is capable of hooking onto said lug (40), and, for retaining said pawl (38) in the inactive position, at a distance from said lug (40) , when the carriage (15) is in the retracted rest position, a stop (41), which, carried by the frame (16), is also interposed on the path of said pawl (38), on the other side of that this with respect to said lug (40). Dispositif de glantage suivant la revendication 2, caractérisé en ce que le cliquet (38) est porté par le chariot (15) et l'ergot (40) associé est en saillie sur le bras de glantage (13).Gliding device according to claim 2, characterized in that the pawl (38) is carried by the carriage (15) and the associated lug (40) protrudes from the gliding arm (13). Dispositif de glantage suivant la revendication 3, caractérisé en ce que, pour appui du bras de glantage (13) dans sa position basculée de pose, le chariot (15) porte une butée (56) réglable en position perpendiculairement au plan (P2) contenant l'axe de pivotement (A2) de ce bras de glantage (13) et la direction de déplacement (D) du chariot (15).Gliding device according to claim 3, characterized in that, for support of the gliding arm (13) in its tilted installation position, the carriage (15) carries a stop (56) adjustable in position perpendicular to the plane (P2) containing the pivot axis (A2) of this sliding arm (13) and the direction of movement (D) of the carriage (15). Dispositif de glantage suivant l'une quelconque des revendications 2 à 4, caractérisé en ce que le cliquet (38) est monté réglable en position sur le chariot (15) perpendiculairement au plan (P2) contenant l'axe de pivotement (A2) du bras de glantage (13) et la direction de déplacement (D) du chariot (15).Gliding device according to any one of claims 2 to 4, characterized in that the pawl (38) is mounted adjustable in position on the carriage (15) perpendicular to the plane (P2) containing the pivot axis (A2) of the gliding arm (13) and the direction of movement (D) of the carriage (15). Dispositif de glantage suivant l'une quelconque des revendications 2 à 5, caractérisé en ce que, pour la position basculée de pose du bras de glantage (13), le barycentre des faces en contact entre le cliquet (38) et l'ergot (40) se situe au-delà de l'axe de pivotement de ce cliquet (38) par rapport à son mouvement d'engagement sur cet ergot (40).Gliding device according to any one of Claims 2 to 5, characterized in that, for the tilted position for fitting the gliding arm (13), the barycenter of the faces in contact between the pawl (38) and the lug ( 40) is located beyond the pivot axis of this pawl (38) relative to its engagement movement on this lug (40). Dispositif de glantage suivant l'une quelconque des revendications 2 à 6, caractérisé en ce que, le bras de glantage (13) étant en forme d'étrier, avec une partie médiane (25) et deux bras latéraux (26), il y a deux cliquets (38), à raison d'un par bras latéral (26) du bras de glantage (13).Gliding device according to any one of Claims 2 to 6, characterized in that, the gliding arm (13) being in the shape of a stirrup, with a middle part (25) and two lateral arms (26), there has two pawls (38), one per side arm (26) of the gliding arm (13). Dispositif de glantage suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que la transmission (17) comporte au moins un câble (64), qui, passé en boucle sur un organe de renvoi (66) porté par le bras de glantage (13), s'étend parallèlement à la direction de déplacement (D) du chariot (15) de part et d'autre de celui-ci.Gliding device according to any one of claims 1 to 7, characterized in that the transmission (17) comprises at least one cable (64), which, looped over a deflection member (66) carried by the arm of glantage (13), extends parallel to the direction of movement (D) of the carriage (15) on either side thereof. Dispositif de glantage suivant la revendication 8, caractérisé en ce que ledit câble (64) s'étend dans deux plans (P3, P4), qui, l'un et l'autre perpendiculaires au plan (P2) contenant la direction de déplacement (D) du chariot (15) et l'axe de pivotement (A2) du bras de glantage (13), sont décalés l'un par rapport à l'autre suivant cet axe de pivotement (A2), le passage de l'un à l'autre de ces plans (P3, P4) se faisant, d'une part, sur l'organe de renvoi (66) porté par le bras de glantage (13), et, d'autre part, sur une poulie d'entraînement (65) sur laquelle le câble (64) fait plusieurs tours.Gliding device according to claim 8, characterized in that said cable (64) extends in two planes (P3, P4), which both perpendicular to the plane (P2) containing the direction of movement ( D) of the carriage (15) and the pivot axis (A2) of the gliding arm (13), are offset relative to each other along this pivot axis (A2), the passage from one to the other of these planes ( P3, P4) taking place, on the one hand, on the return member (66) carried by the gliding arm (13), and, on the other hand, on a drive pulley (65) on which the cable (64) makes several turns. Dispositif de glantage suivant l'une quelconque des revendications 5 à 8, caractérisé en ce que l'organe de renvoi (66) porté par le bras de glantage (13) est calé sur celui-ci, et les deux extrémités (68, 69) du câble (64) sont l'une et l'autre attelées au bras de glantage (13) après passage sur cet organe de renvoi (66).Gliding device according to any one of Claims 5 to 8, characterized in that the deflection member (66) carried by the gliding arm (13) is fixed thereon, and the two ends (68, 69 ) of the cable (64) are both coupled to the sliding arm (13) after passing over this return member (66). Dispositif de glantage suivant l'une quelconque des revendications 8 à 10, caractérisé en ce que, outre l'organe de renvoi (66) porté par le bras de glantage (13), le câble (64) passe sur d'autres organes de renvoi (65, 70, 71, 72), dont un forme une poulie d'entraînement, et qui tous sont portés par le bâti (16).Gliding device according to any one of Claims 8 to 10, characterized in that, in addition to the deflection member (66) carried by the gliding arm (13), the cable (64) passes over other return (65, 70, 71, 72), one of which forms a drive pulley, and all of which are carried by the frame (16). Dispositif de glantage suivant la revendication 11, caractérisé en ce que deux desdits autres organes de renvoi (70, 71) sont alignés avec celui (66) porté par le bras de glantage (13), en étant chacun respectivement disposés de part et d'autre de celui-ci.Gliding device according to claim 11, characterized in that two of said other deflection members (70, 71) are aligned with that (66) carried by the gliding arm (13), being each respectively arranged on the side and other of it. Dispositif de glantage suivant l'une quelconque des revendications 8 à 12, caractérisé en ce que le câble (64) forme globalement une boucle rectangulaire.Gliding device according to any one of claims 8 to 12, characterized in that the cable (64) generally forms a rectangular loop. Dispositif de glantage suivant l'une quelconque des revendications 7 à 13, caractérisé en ce que, le bras de glantage (13) étant en forme d'étrier, avec une partie médiane (25) et deux bras latéraux (26), la transmission (17) comporte deux câbles (64), à raison d'un par bras latéral (26) du bras de glantage (13).Gliding device according to any one of Claims 7 to 13, characterized in that, the gliding arm (13) being in the shape of a stirrup, with a central part (25) and two lateral arms (26), the transmission (17) has two cables (64), one per lateral arm (26) of the gliding arm (13). Dispositif de glantage suivant l'une quelconque des revendications 1 à 14, caractérisé en ce que le bras de glantage (13) étant en forme d'étrier, avec une partie médiane (25) et deux bras latéraux (26), le chariot (15) se réduit à deux coulisseaux (28), à raison d'un par bras latéral (26) du bras de glantage (13), lesdits coulisseaux (28) étant chacun individuellement montés mobiles dans deux rainures (30) prévues à cet effet sur le bâti (16).Sliding device according to any one of Claims 1 to 14, characterized in that the gliding arm (13) being in the shape of a stirrup, with a central part (25) and two lateral arms (26), the carriage ( 15) is reduced to two slides (28), one per lateral arm (26) of the gliding arm (13), said slides (28) being each individually movably mounted in two grooves (30) provided for this purpose on the frame (16). Dispositif de glantage suivant l'une quelconque des revendications 1 à 15, caractérisé en ce que le bâti (16) est formé de deux coquilles (18).Gliding device according to any one of claims 1 to 15, characterized in that the frame (16) is formed by two shells (18).
EP91402824A 1990-10-25 1991-10-23 Device for the blocking of lens blanks with a lockable arm Expired - Lifetime EP0483000B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9013233A FR2668410B1 (en) 1990-10-25 1990-10-25 GLOVE DEVICE WITH LOCKABLE GLOVE ARM.
FR9013233 1990-10-25

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EP0483000A1 true EP0483000A1 (en) 1992-04-29
EP0483000B1 EP0483000B1 (en) 1994-02-16

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EP (1) EP0483000B1 (en)
JP (1) JPH04264424A (en)
DE (1) DE69101208T2 (en)
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FR (1) FR2668410B1 (en)

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DE19505524C2 (en) * 1995-02-18 1996-12-19 Wernicke & Co Gmbh Device for centering a lens blank and attaching a holding part on an optical surface of the lens blank
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FR2668410A1 (en) 1992-04-30
DE69101208T2 (en) 1994-05-26
JPH04264424A (en) 1992-09-21
DE69101208D1 (en) 1994-03-24
FR2668410B1 (en) 1993-01-22
ES2051572T3 (en) 1994-06-16
EP0483000B1 (en) 1994-02-16
US5209026A (en) 1993-05-11

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