EP2819810A1 - Système comportant un pion de positionnement et de centrage pour lentille ophtalmique, un organe d'assujettissement et un outil pour le positionnement dudit organe d'assujettissement sur ledit pion de positionnement et de centrage - Google Patents
Système comportant un pion de positionnement et de centrage pour lentille ophtalmique, un organe d'assujettissement et un outil pour le positionnement dudit organe d'assujettissement sur ledit pion de positionnement et de centrageInfo
- Publication number
- EP2819810A1 EP2819810A1 EP13710479.0A EP13710479A EP2819810A1 EP 2819810 A1 EP2819810 A1 EP 2819810A1 EP 13710479 A EP13710479 A EP 13710479A EP 2819810 A1 EP2819810 A1 EP 2819810A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- positioning
- centering pin
- centering
- tool
- securing member
- 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
Links
Classifications
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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
- 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
- B24B13/0055—Positioning of lenses; Marking of lenses
-
- 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
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
- B24B47/225—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation for bevelling optical work, e.g. lenses
-
- 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
-
- 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
-
- 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
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49998—Work holding
Definitions
- the invention relates to the general field of positioning of organs subject to positioning and centering pins for ophthalmic lenses to then secure these positioning and centering pins on these lenses, and in particular the invention relates to systems comprising such a positioning and centering pin, such securing member and a tool for positioning the securing member on the positioning and centering peg; and groups of such systems.
- the invention further relates to methods for positioning such securing members on such positioning and centering pins.
- the invention also relates to machines for positioning and securing ophthalmic lenses on such positioning and centering pins.
- ophthalmic lenses are subjected to different stages of manufacture.
- the manufacturing methods generally employed to obtain a finished lens and cut to the shape of a particular mount typically include steps in which the ophthalmic lens receives markings on its surface.
- the ophthalmic lenses must be maintained in a position determined and centered with respect to a determined positioning reference.
- centering and positioning pins which are subject to ophthalmic lenses through securing members, the latter being for example formed by adhesive pads.
- This manual positioning is inherently random, relative to a certain correct position, and may cause certain problems during the steps succeeding it.
- incorrect positioning of the securing member on the positioning and centering pin may cause incorrect positioning of the positioning and centering pin on the lens and thus generate, for example during a trimming, a rotational displacement of the lens (alone or together with the securing member) relative to the positioning and centering pin, in other words a misalignment, for example due to shearing of the securing member during trimming from the periphery of the lens.
- markings can be formed by engravings representing points or crosses and identifying a particular point (for example the optical center of the ophthalmic lens or the prism reference point for a progressive lens), or axis lines (for example to indicate the horizontal axis in which astigmatism is corrected), or shapes delimiting a particular area (eg, near vision area or far vision area in the case of progressive ophthalmic lenses).
- the positioning of the lens on the positioning and centering pin, and therefore the prior positioning of the securing member on the positioning and centering pin, in order to proceed with a clipping step, is made particularly complicated by makes the large number of spectacle frames having different shapes, forcing to increase the sizes of the positioning and centering pins and the sizes of the securing members.
- the correct positioning of a securing member on a positioning and centering pin is therefore complex.
- the invention aims to provide a system for positioning a securing member on a positioning and centering pin of an ophthalmic lens that is simple, convenient and economical both in manufacture and use.
- the invention thus has, in a first aspect, a system comprising a positioning and centering pin for an ophthalmic lens configured to be secured to said ophthalmic lens, a fastener configured to be positioned on said positioning and centering pin and to be subject to the latter and secondly to be subject to said ophthalmic lens; characterized in that said system further comprises a tool for positioning said securing member on said positioning and centering pin, which tool comprises a body provided with at least one receiving pattern configured to receive at least partially the at least one of said securing member and said positioning and centering pin, at least one centering member of said securing member and at least one guide member of said positioning and centering pin; said fingerprint, said at least one centering member and said at least one guide member being configured such that, when said securing member and said positioning and centering pin are mounted on said tool, said securing member is centered with respect to said body and said positioning and centering pin is guided relative to said body; whereby said securing member is positioned at a predetermined position on
- the system according to the invention forms an aid for a user, for example an optician, the positioning of the securing member on the positioning and centering pin to which this member is subject; and this regardless of the size and shape of the pin and the securing member as far as the tool is configured to receive them.
- the advantage of the tool of the system according to the invention is that the positioning of the securing member on the pin is correctly performed and is repeatable. The same fastening devices will always be subject to substantially the same place on the same pieces.
- the tool of the system according to the invention may have a shape and / or dimensions that allow it to receive several sizes of pins and securing members, which are configured to then be subject to an ophthalmic lens to undergo certain steps machining process and / or finishing, for example a trimming for the adaptation of this lens to a spectacle frame.
- Such a clipping step, carried out by an optician, requires so-called manual preparatory steps, such as the positioning of the securing member on the positioning and centering peg, which must be particularly simple to implement while being particularly safe.
- the tool of the system according to the invention advantageously offers this safety and simplicity of implementation of the securing member on the positioning and centering pin, in a determined position, said correct.
- the subsequent preparatory steps are implemented using machines having a robotic arm on which the optician is positioned in a single possible position the pin with the member subject to this piece.
- Geometrical characteristics of the frame are sent to the machine, which machine reads, for example by means of a camera, the characteristics of the lens, which characteristics are defined by the shape of the lens and by the markings it contains. .
- the robotic arm then positions the positioning and centering peg and the member on the lens to secure this peg to this lens via the securing member, the positioning being then determined according to various parameters such as the choice of centering with respect to the optical center of the glass or relative to the center of the eyeglass frame, the instructions then being different for the trimming machine according to the choice.
- the system according to the invention is further particularly convenient, compact and economical because, when wrapped in a suitable packaging (which can be particularly simple), the assembly formed of the system and the packaging is easily manipulated, transportable and storable .
- At least one of said positioning and centering pin and said securing member has a generally cylindrical shape having a peripheral contour and said body comprises a cavity having a generally cylindrical shape delimited by a bottom and a peripheral rim, which cavity has a peripheral contour at least partially similar and at least as large as said peripheral contour of at least one of said positioning and centering pin and said securing member; and said guide member of said positioning and centering pin is at least partially formed by said peripheral flange;
- said at least one reception cavity is formed on at least a portion of said bottom of said cavity of said body and on at least a first portion of said peripheral rim of said body, first portion of said peripheral rim situated at the junction with said bottom;
- said at least one reception cavity is formed on at least a second portion of said peripheral rim of said body, said second portion of said peripheral rim situated opposite said bottom of said cavity of said body;
- said at least one centering member of said securing member is formed by a stud projecting from a bottom of a cavity of said body; and said securing member has an orifice configured to be traversed by said stud; said at least one guide member for said positioning and centering pin is formed by a rod projecting from said stud; and said positioning and centering pin has a hole configured to receive said rod;
- said positioning and centering pin has at least one polarizing element and said body of said tool comprises at least one polarizing complementary element configured to cooperate with said at least one polarizing element of said positioning and centering pin;
- said at least one polarizing element of said positioning and centering pin is formed by a positioning tab and said at least one complementary keying element of said body of said tool is formed by a notch formed in a peripheral rim of said body and configured to receiving said positioning tab;
- said securing member has at least one first withdrawal element
- said positioning and centering pin has at least one second withdrawal element
- said body of said tool comprises at least one complementary withdrawal element configured to cooperate with said at least one a first withdrawal member and with said at least one second withdrawal member;
- said at least one withdrawal element of said securing member is formed by a gripping tongue
- said at least one second element for withdrawing said positioning and centering pin is formed by a protuberance
- said at least one complementary element of removal of said body from said tool is formed by a notch formed in a peripheral rim of said body and configured to receive said tongue and said protuberance.
- the invention also relates, in a second aspect, to a group of systems comprising a first system as described above and a second system as described above; said first system having a first securing member, a first positioning and centering pin and a first tool each having a respective first predetermined size; and said second system having a second securing member, a second positioning and centering pin and a second tool each having a respective second predetermined size smaller than said first predetermined size.
- Such a group can be produced in a particularly simple, convenient and economical manner since the main features of the systems are identical.
- this group makes it possible to very simply adapt the tool to the securing member and to the positioning and centering pin necessary for positioning an ophthalmic lens, for example in a machine for trimming this lens.
- said first tool comprises a first body provided with a first engagement face and said second tool comprises a second body provided with a second complementary engagement face configured to be received in said first engagement face;
- the group further comprises a bar common to the first and second systems and configured to pass through said first and second bodies, said bar having a central portion forming a centering stud of said first and second securing members and two end portions disposed on either side of said central portion, said end portions forming guide rods respectively of the first and second positioning and centering pins.
- the invention also relates, in a third aspect, to a method of positioning a securing member on a positioning and centering pin for an ophthalmic lens using a system, comprising the following steps:
- a positioning and centering pin for an ophthalmic lens configured to be secured to said ophthalmic lens; providing a securing member configured on the one hand to be positioned on said positioning and centering pin and to be secured thereto and on the other hand to be secured to said ophthalmic lens;
- a tool comprising a body provided with at least one reception cavity configured to receive at least partially at least one of said securing member and said positioning and centering pin, of at least one centering member of said securing member and at least one guide member of said positioning and centering pin;
- the positioning method according to the invention is particularly powerful, simple, convenient and economical to implement.
- the invention it is particularly simple for a user, for example an optician, to position the securing member and the positioning and centering peg on the tool so as to properly position the securing member. on this positioning and centering pin, so that the ophthalmic lens is then positioned correctly (most often by a machine) on and with respect to this pin, and in particular on this securing member, which is then interposed between the lens and the pawn it is configured to be subject to.
- the invention also relates, in a fourth aspect, to a machine for positioning and securing an ophthalmic lens on a positioning and centering pin by means of a securing member previously positioned and secured on said pawn of positioning and centering, comprising at least one system as described above.
- FIG. 1 shows schematically and partially in perspective, a machine for positioning an ophthalmic lens on a positioning and centering pin for a step of trimming the lens;
- FIG. 2 shows schematically in section an ophthalmic lens secured to a positioning and centering pin, with a securing member interposed between the lens and the pin;
- FIG. 3 shows schematically and partially in perspective, a system according to a first embodiment comprising a tool, a positioning and centering pin and a securing member, in an assembled state;
- FIGS. 4 and 5 show schematically and partially in perspective, the system shown in Figure 3 taken from two different angles of view, in an exploded state;
- FIGS. 6 to 8 are views similar to FIGS. 3 to 5 respectively of a system provided with a tool, a positioning and centering pin and a securing member, according to a variant of the system of FIGS. Figures 3 to 5;
- FIGS. 9 to 12 diagrammatically and partially, in perspective, a group of systems each conforming to a second embodiment and each provided with a tool, a positioning and centering peg and an assembly member; subjection, taken according to different angles of view and respectively in an assembled state and in an exploded state.
- FIG. 1 illustrates a machine 1 for positioning and securing an ophthalmic lens 2 on a positioning and centering pin 4, by means of a securing member 5 (visible on the 2) previously positioned and secured on the positioning and centering pin 4.
- FIG. 2 illustrates the ophthalmic lens 2 secured to the positioning and centering pin 4 by means of the securing member 5.
- the ophthalmic lens 2 has a front face 6 and a rear face 7.
- the securing member 5 is a substantially elastic adhesive pad which is attached to the front face 6 of the lens 2.
- the positioning and centering pin 4 is made of plastic material molded in one piece.
- Machine 1 is a machine substantially similar to machines whose configuration and operation are described in European Patent Applications EP 1 393 036, EP 2 139 642 and EP 1 919 663.
- the machine 1 comprises a base 10, a frame 11 rising from the base 10 and a monitor 12 overhanging the base 10.
- the base 11 is provided with a support 13 in the form of a tripod configured to receive the lens 2.
- the monitor 12 is provided with a human machine interface 14 formed here in particular by a touch screen 15 on which a user of this machine 1, for example an optician, can act.
- the machine 1 is further provided with a robotic arm 9 fixed and articulated to the monitor 12.
- This robotic arm 9 carries at one end opposite its junction with the monitor 12, a circular holding tip 16 having a cylindrical cavity 17 for receiving a so-called base part of the positioning and centering pin 4, on which has been previously positioned and secured the adhesive pad 5.
- the optician is therefore positioned in a single possible position the pin 4 with the buffer 5 subject to this pin 5.
- Geometrical characteristics of the frame are sent to the machine 1 and the latter reads, for example by means of a camera (no shown), the characteristics of the lens 2, which characteristics are defined by the shape of the lens and the markings it contains.
- the robotic arm 9 then positions the positioning and centering pin 4 and the pad 5 on the lens 2 placed on the support 13 to secure the pin 4 to this lens 2 via the pad 5.
- the positioning of the pin 4 on the lens 2 is determined according to various parameters such as the choice of centering with respect to the optical center of the lens or with respect to the center of a spectacle frame.
- the machine 1 is further provided with a shell 8 covering almost entirely the base 10 and the frame 11.
- the base 10 comprises two tools 20 directly integrated into the shell 8, which tools 20 serve to position the adhesive pad 5 on the positioning and centering pin 4 .
- This shell 8 is molded plastic in one piece.
- This system 3 comprises the positioning and centering pin 4 for the ophthalmic lens 2, the adhesive pad 5 and the tool 20.
- the positioning and centering pin 4 is configured to be secured to the ophthalmic lens 2.
- the adhesive pad 5 is configured on the one hand to be positioned on the positioning and centering pin 4 and to be secured thereto and on the other hand to be secured to the ophthalmic lens 2.
- the tool 20 is itself configured to allow a correct positioning according to a given position of the adhesive pad 5 on the positioning and centering pin 4.
- the positioning and centering pin 4 comprises a base 21 having a generally cylindrical shape and an annular wall 22 forming a flange attached at one end and on the periphery of the base 21.
- the base 21 has an upper face 23 and a lower face 24 opposite the upper face 23, with the annular wall 22 extending at this lower face 24.
- the base 21 also has a radially through slot and opening on the upper face 23 and on the periphery of this base 21.
- the base 21 also has a central and through hole 26, that is to say that opens into both the slot 25, the upper face 23 and the lower face 24.
- the base 21 further comprises a U-shaped cutout 58 formed in its lower face 24.
- the annular wall 22 forming a flange is itself slightly frustoconical so as to substantially adapt to the front face 6 of the ophthalmic lens 2.
- This annular wall 22 has an upper face 27 and a lower face 28.
- the annular wall 22 furthermore has a plurality of ribs 30 formed in its lower face 28 and which are evenly distributed on this lower face 28.
- These ribs 30 ensure a good securing of the adhesive pad 5 on the positioning and centering pin 4, in particular on the lower face 28 of the annular wall 22.
- the annular wall 22 furthermore has four locating tabs 31 each substantially of rectangular trapezoidal shape and each extending from a peripheral edge of the annular wall 22.
- Each positioning tab 31 has a top in which is formed a slight recess 32.
- These positioning tabs 31 form, on the one hand, polarization elements for correctly positioning the positioning and centering pin 4 on the tool 20, as will be described hereinafter, in a predetermined position.
- the annular wall 22 of the positioning and centering pin 4 further comprises a protuberance 33 projecting from the peripheral edge of this annular wall 22 and which is arranged between two positioning tabs 31.
- This protuberance 33 has a partially rectangular contour and is provided to facilitate removal of the positioning and centering pin 4 from the tool 20.
- the configuration of the annular wall 22 relative to the base 21 allows access to the hole 26 of this base 21 by its lower face 24, through the annular wall 22.
- the base 21 and the annular wall 22 are in fact circular, with the base 21 having a first diameter and the annular wall 22 having a second outer diameter greater than the first diameter.
- the adhesive pad 5 also called fastening member, has a substantially elastic body and of cylindrical shape, body in which is formed a circular orifice 35.
- This adhesive pad 5 is provided with an upper face 36, a lower face 37 opposite the upper face 36 and a circular outer circumferential edge 38.
- This adhesive pad 5 is circular and further has a gripping tab 39 projecting from the outer peripheral flange 38.
- This gripping tab 39 facilitates the removal of the adhesive pad 5 from the tool 20.
- the upper 36 and lower 37 faces are covered with an adhesive product and, in the initial state, these upper 36 and lower 37 faces are each covered with a protective film (not shown) to facilitate handling of the adhesive pad 5.
- a protective film (not shown) to facilitate handling of the adhesive pad 5.
- the protective film covering the upper face 36 is removed during positioning of the adhesive pad 5 on the positioning and centering pin 4 by means of the tool 20; and the protective film covering the lower face 37 is removed during the positioning of the lens 2 on the assembly formed by the positioning and centering pin 4 and the adhesive pad 5, through the machine 1 and in particular the robotic arm 9.
- This adhesive pad 5 has a third outer diameter similar to the second outer diameter of the annular wall 22 of the positioning and centering pin 4.
- the second outer diameter of the annular wall 22 of the positioning and centering pin 4 and the third outer diameter of the adhesive pad 5 are approximately equal to 20mm.
- the tool 1 comprises a body 42 provided with a slightly frustoconical outer side wall 43, an upper face 44 and a lower face 45 opposite the upper face 44.
- the body 42 has a main cavity 46 having a generally cylindrical shape delimited by a bottom 47 and by a peripheral rim 48.
- the peripheral rim 48 has a predetermined height.
- the body 42 further has recesses 49 formed in the lower face 45 and recesses 50 formed in the bottom 47.
- the main cavity 46 has a peripheral contour 51 partially similar and at least as large as the peripheral contour of the positioning and centering pin 4 and the adhesive pad 5; so that, as will be seen hereinafter in more detail, the peripheral flange 48 of the body 43 partially forms a guide member for both the positioning and centering pin 4 and the adhesive pad 5.
- This peripheral rim has, in the main cavity 46, four notches 52 configured to receive the positioning tabs 31 of the positioning and centering pin 4. These notches 52 form polarizing complementary elements for the positioning of the positioning and centering pin 4 on the tool 20.
- the body 42 also has a notch 53 also formed in the peripheral rim 48, between two notches 52.
- This notch 43 forms a complementary withdrawal element and is configured to receive the gripping tab 39 of the adhesive pad 5 and the protuberance 33 of the annular wall 22 of the positioning and centering pin 4.
- the body 42 of the tool 20 furthermore has three other recesses 54 formed in the outer lateral wall 43.
- These recesses are also formed during the molding of the tool 20, and allow to lighten this tool 20 and thus to use less plastic; and also allow maintenance by a user, for example the optician, of the tool 20 both at the time of mounting the adhesive pad 5 and the positioning and centering pin 4 on the tool 20 at the time of their withdrawal .
- the body 42 of the tool 20 further comprises a stud 56 projecting from the bottom 47 of the main cavity 46.
- This pad 56 has a generally cylindrical and even circular shape and has a diameter similar to the diameter of the orifice 35 of the adhesive pad 5. This pad 56 has a height sufficient to both guide and center the adhesive pad 5 when the latter is mounted on the body 42 of the tool 20.
- This pad 56 thus forms a centering member of the adhesive pad 5, and even a guide member of this pad; because the orifice 35 of the adhesive pad 5 is configured to be traversed by this stud 56.
- the body 42 of the tool 20 also comprises a rod 57 projecting from the stud 56.
- This rod 57 has, in section, the shape of a keyhole, that is to say that it comprises two zones each having a different diameter.
- the larger diameter zone of the rod 57 has a diameter similar to the diameter of the hole 26 while the smaller diameter zone of the rod 57 has a diameter similar to the width of the U-shaped cutout 58.
- This rod 57 has a height which allows in particular the guiding of the positioning and centering pin 4 when the latter is mounted on the body 42 of the tool 20.
- This rod 57 thus forms a guiding member of the positioning and centering pin 4 and, in addition, because of its keyhole shape, forms a complementary keying element.
- the optician must necessarily position correctly, in a predetermined position, the adhesive pad 5 on the lower face 28 of the annular wall 22 of the positioning and centering pin 4 to allow, subsequently, a correct positioning of the assembly formed by the positioning and centering pin 4 and the adhesive pad 5 on the lens 2.
- the optician is provided with the positioning and centering pin 4, the adhesive pad 5 and approaches the machine 1 which has two tools 20.
- the optician mounts the adhesive pad 5 on the body 42 of the tool 20, in particular the optician introduces this adhesive pad 5 into the main cavity 46 of the body 42, with the pad 56 of the tool 20 which passes through the orifice 35 of the adhesive pad 5 until the lower face 37 of the adhesive pad 5 is in contact with the bottom 47 of this main cavity 46 and in at least partial contact with certain areas of the peripheral contour 51 of the block 42.
- the adhesive pad 5 is thus positioned and centered with respect to the body 42 of the tool 20 in a predetermined position, with the gripping tab 39 of the adhesive pad 5 which is received in the notch 53 formed in the peripheral rim 48 of the block 42.
- the adhesive pad 5 is then correctly positioned and centered with respect to the body 42 of the tool 20.
- the optician can then remove the protective film (not shown) which covers the upper face 36 of the adhesive pad 5.
- the optician approaches the positioning and centering pin 4, with the lower face 28 of the annular wall 22 and the lower face 24 of the base 21 facing towards the upper face 36 of the adhesive pad 5.
- the positioning and centering pin 4 is then mounted on the body 42 of the tool 20, in particular it is partially inserted into the main cavity 46 of the body 42 until the lower face 28 of the annular wall 22 comes in contact with the upper face 36 of the adhesive pad 5.
- the positioning and centering pin 4 is both guided by the rod 57 whose two zones are received respectively in the hole 26 and the cutout 58 of the positioning and centering pin 4 and by the peripheral rim 48 of the body 42.
- the positioning tabs 31 of the annular wall 22 are received in the notches 52 formed in the peripheral rim 48 of the block 42 and the protuberance 33 of this annular wall 22 is in turn received in the notch 53 formed in this peripheral rim 48.
- the positioning and centering pin 4 is thus both guided and centered thanks to this rod 57 and to this peripheral rim 48, because of the notches 52 and the notch 53 which cooperate respectively with the positioning tabs 31 and the protuberance 33.
- both the adhesive pad 5 with respect to the body 42 of the tool 20 and the positioning and centering pin 4 with respect to the body 42 of the tool 20, can apply sufficient force on the base 21 of the positioning and centering pin 4 so as to ensure the subjection of the latter with the adhesive pad 5.
- the optician can very simply and very quickly fasten the elastic buffer 5 to the positioning and centering pin 4 in a predetermined correct position ensuring thereafter the smooth development of the manufacturing steps of the ophthalmic lens 2 which will be secured by its front face 6 to the lower face 37 of the adhesive pad 5, after the optician has removed the protective film (not shown) covering the lower face 37, arranged the base 21 of the positioning and centering pin 4 together with the adhesive pad 5, subjecting the latter in the cavity 17 of the holding stud 16 of the robotic arm 9 and that the optician has also activated the machine 1.
- the assembly formed by the positioning and centering pin 4 and the adhesive pad 5 is positioned on the robotic arm without the tool 20.
- Figures 6 to 8 illustrate an alternative embodiment of the system, representing a smaller version of the system, compared to the larger version of the system shown in Figures 3 to 5.
- the system 103 comprises a positioning and centering pin 104, an adhesive pad 105, also called a securing member, and a tool 120 having the same function as the tool 20 visible in FIGS. 3 to 5.
- the positioning and centering pin 104 is in all respects identical to the positioning and centering pin 4 visible in FIGS. 3 to 5, with the exception that it does not have a generally circular shape, but rather an oblong shape.
- this positioning and centering pin 104 has a base 121 having an upper face 123, a lower face 124 opposite the upper face 123, a slot 125 radially through and a hole 126 opening on the upper and lower faces 123 and 124.
- This positioning and centering pin 104 also has a wall 122 which is semi-annular here and which is provided with an upper face 127, a lower face 128 opposite the upper face 127, of a plurality of teeth 129, positioning tabs 131 each having a slight recess 132 and a protrusion 133.
- the base 121 and the semi-annular wall 122 are provided with flattened areas 140 diagonally opposite so as to have a rather oblong shape.
- the adhesive pad 105 is in all respects identical to the adhesive pad 5 visible in FIGS. 3 to 5, except that it has a generally oblong rather than circular shape.
- This adhesive pad 105 is thus provided with a body 134 of oblong shape in which an orifice 135 is formed.
- This adhesive pad 105 furthermore has an upper face 136, a lower face 137 opposite to the upper face 136, an outer peripheral rim 138 from which a gripping tongue 139 protrudes.
- This adhesive buffer 105 is also covered, in the initial state, with protective films (not shown).
- the tool 120 is in all respects identical to the tool 20 visible in FIGS. 3 to 5, with the exception that it is smaller in size, in correspondence with the size of the positioning and centering pin 104. and the size of the adhesive pad 105.
- the tool 120 thus has in particular a body 142 having an external lateral wall 143 in which recesses 154 are formed and having a main cavity 146 delimited by a bottom 147 and by a peripheral rim 148.
- Recesses 150 of different shapes are provided in the bottom 147 and a recess 143 is further formed in the peripheral rim 148.
- the body 142 of the tool 120 also has an upper face 144, a lower face 145 opposite this upper face 144 and recesses 149 formed in this lower face 145.
- the body 142 of the tool 120 also has two notches 152 formed in the peripheral rim 148.
- the main cavity 146 has a peripheral contour 151 here of oblong shape relative to the shape of the adhesive pad 105 and the positioning and centering pin 104.
- the assembly formed by the main cavity 146, in particular its peripheral contour 151 and its bottom 147, and by the peripheral rim 148 defines a reception pattern for both the adhesive pad 105 which is received, by its lower face 137, on the bottom 147 and on a first portion of the peripheral rim 148, the first portion located at the junction between the peripheral rim 148 and the bottom 147; and wherein the positioning and centering pin 104 is received, in particular on a second portion of this peripheral flange 148, the second portion opposite the first portion of this peripheral flange 148.
- the tool 120 further comprises a stud 156 projecting from the bottom 147 of the main cavity 146 and a rod 157 projecting from this stud 156.
- This stud 156 and this rod 157 are identical to the stud 56 and to the rod 57 visible in FIG.
- the method of positioning the adhesive pad 105 on the lower face 128 of the semi-annular wall 122 of the positioning and centering pin 104 via the tool 120 on which this adhesive pad 105 and this positioning and centering pin 104 are mounted in a guided and centered manner is identical to the method of positioning the adhesive pad 5 on the positioning and centering pin 4 by virtue of the tool 20 illustrated in FIGS. 3 to 5.
- the optician equips himself with the adhesive pad 105 and introduces it into the main cavity 146 of the tool 120 until the lower face 137 of the pad 105 comes into contact with the bottom 147 of the main cavity 146 and with the external peripheral edge 138 of this adhesive pad 105 which is opposite the peripheral contour 151 of this main cavity 146; and with the gripping tab 139 which is received in the notch 153 in the peripheral flange 148 of the tool 120.
- the adhesive pad 105 is thus guided and centered with respect to the body 142 of the tool 120, in particular thanks to the pad 156 which passes through the orifice 135 of the adhesive pad 105.
- the optician then removes the protective film (not shown) covering the upper face 136 of the adhesive pad 105 and mounts the positioning and centering pin 104 on the body 142 of the tool 120, with the lower face 128 of the semi-circular wall. -annual 122 and the lower face 124 of the base 121 facing the upper face 136 of the adhesive pad 105.
- the positioning and centering pin 104 is introduced partially into the main cavity 146 of the body 142, with the rod 157 which is introduced into both the hole 126 and into a cutout (not shown) formed in the lower face 124 of the base 121; with two of the locating tabs 131 which are received in the notches 152 formed in the peripheral rim 148 of the body 142; with the flattened areas 140 which are at least partially opposite the peripheral contour 151 of the main cavity 146; and with the protuberance 133 and the two locating tabs 131 formed in conjunction with this protrusion 133 which are received in the indentation 153 formed in this peripheral rim 148.
- This positioning and centering pin 104 is thus both centered and guided with respect to the body 142 of the tool 120.
- the optician can then act on the positioning and centering pin to secure the adhesive pad 105 to the latter.
- the removal of the assembly formed by the positioning and centering pin 104 and by the adhesive pad 105 of the tool 120 is done by acting on the gripping tab 139 of the adhesive pad 105 and on the protuberance 133 of the positioning pin and centering 104.
- the systems 3 and 103 illustrated in FIGS. 3 to 8 form a group of systems.
- This group is thus formed by a first system 3 comprising a first adhesive pad 5, a first positioning and centering pin 4 and a first tool 20 each having a respective first predetermined size.
- this first size is defined by the outer diameter of the annular wall 22 of the positioning and centering pin 4 and the outer diameter of the adhesive pad 5, each being approximately equal to 20 mm.
- This group therefore also comprises a second system 103 comprising second adhesive buffer 105, a second positioning and centering pin 104 and a second tool 120 each having a respective second predetermined size.
- this second predetermined size is defined by the largest outer diameter of the semi-circular wall. annular 122 of the positioning and centering pin 104 and the outer diameter of the adhesive pad 105, each being approximately equal to 16mm.
- the first system 3 thus has a first predetermined size greater than the second predetermined size that the second system 03 presents.
- Figures 9 to 12 illustrate an alternative embodiment of the group of systems, representing a so-called assembly version of the group, compared to the so-called disassembled version of the group illustrated in Figures 3 to 8.
- Figures 9 to 12 is formed of systems according to a different embodiment of the systems shown in Figures 3 to 8.
- the positioning and centering pin 204 and the adhesive pad 205 of the system 203 illustrated in FIGS. 9 to 12 are in all respects identical to the positioning and centering pin 4 and to the adhesive pad 5 of the system 3 illustrated in FIGS. 5.
- positioning and centering pin 304 and the adhesive pad 305 of the system 303 illustrated in FIGS. 9 to 12 are identical in all respects to the positioning and centering pin 104 and to the adhesive pad 105 of the system 103 illustrated in FIGS. Figures 6 to 8.
- the tool 220 illustrated in FIGS. 9 to 12 is very similar to the tool 20 illustrated in FIGS. 3 to 5, with the exception that this tool 220 comprises a body 242 which is extended by a frustoconical portion 260 attached to it. to the body 242, at its lower face (not shown) via a shoulder 261.
- the body 242 has a main cavity 246 at several levels, that is to say that it comprises a first bottom wall 247 and a second bottom wall 262 (FIG. 11) located further in the main cavity 246, that is to say at the end of the frustoconical portion 260 which is opposed to the main opening of the main cavity 246, at the upper face 244 of the body 242.
- This second bottom wall 262 has a central opening 263.
- the frustoconical portion 260 is further provided at its end opposite to the upper face 244 of the body 242 of a peripheral flange 264 projecting from the second bottom wall 262 and forming a so-called interlocking flange.
- the second bottom wall 262 is the flange 264 forming a nesting face.
- the tool 220 also has a stud 256 and a rod 257 which are here formed in one piece with a stud 356 and a rod 357 provided for the tool 320.
- pads 256, 356 and rods 257, 357 are formed on a common bar 265 configured to connect the tool 220 to the tool 320, and more generally configured to connect the system 203 to the system 303 to form the group of systems.
- the tool 320 is very similar to the tool 120 visible in FIGS. 6 to 8, with the exception that this tool 320 comprises a body 342 which is extended by a frustoconical portion 360 attached to this body 342. via a shoulder 361.
- This frustoconical portion 360 extends at the lower face (not shown) of the body 342.
- This body 342 furthermore has a main cavity 346 much deeper than the main cavity 146 of the tool 120 visible in FIGS. 6 to 8.
- This main cavity 346 has a first bottom wall 347 and a second bottom wall 362 opposite the top wall 344 of the body 342.
- the second bottom wall 362 has a circular opening 363 formed at its center.
- the frustoconical portion 360 further has, at its end opposite to the upper wall 344 of the body 342, a shoulder 366 said interlocking shoulder.
- the second bottom wall 362 is the flange 366 form a complementary interlocking face.
- This interlocking shoulder 366 is configured to come into contact with the peripheral rim 264 of the frustoconical portion 260 of the tool 220, with the second bottom wall 362 which is therefore configured to bear against the second bottom wall 262. ; in order to fit the tool 220 with the tool 320.
- the common bar 265 is itself configured for, on the one hand that the pad 256 and the rod 257 at least partially through the opening 263 formed in the second bottom wall 262 and that the stud 356 and the rod 357 at least partially through the opening 363 formed in the second bottom wall 362.
- the optician first equips himself with the positioning and centering pin 204, respectively 304, and introduces it into the main cavity 246, respectively 346, with the upper face 223, respectively 323, of the base 221, respectively 321, facing the funds 247 and 262, respectively 347 and 362, of the main cavity 246, respectively 346.
- the positioning and centering pin 204, respectively 304, is guided and centered with respect to the body 242, respectively 342, thanks to its mounting around the pad 256 and the rod 257, respectively 356 and 357.
- the systems 203 and 303 have the same polarization and retraction elements as those of the systems 3 and 103 illustrated in FIGS. 3 to 8.
- the body 242, respectively 342 has no recess such that the recesses 49, 50 and 54 of the body 42 of the tool 20 visible in Figures 3 to 5 and the recesses 149, 150 and 154 of the body 142 of the tool 120 visible in FIGS. 6 to 8.
- the optician is provided with the adhesive pad 205, respectively 305, and also introduces it into the main cavity 246, respectively 346, with its lower face 237, respectively 337, turned towards the lower face 228, respectively 328, of the annular wall 222, respectively of the semi-annular wall 322.
- the adhesive pad 205, 305 respectively, is positioned, guided and centered with respect to the body 242, respectively 342, on the positioning and centering pin 204, respectively 304, thanks in particular to the rod 257, respectively 357, which passes through the orifice 235, respectively 335, of the adhesive buffer 205, respectively 305.
- the optician then presses on the adhesive pad 205, 305 respectively, to sufficiently secure the latter on the positioning and centering pin 204, respectively 304.
- the optician will have previously taken the precaution of removing the protective film (not shown) covering the underside 237, respectively 337, of the adhesive pad 205, respectively 305.
- the withdrawal of the assembly formed by the positioning and centering pin 204, respectively 304, and by the adhesive pad 205, respectively 305, is done in the same way as for the systems 3 and 103 illustrated in FIGS. , acting on the same withdrawal elements as comprise the positioning and centering pin 204, respectively 304, and the adhesive pad 205, respectively 305.
- the group formed by the systems 203 and 303 is a group having systems of different predetermined sizes since the system 203 has the same predetermined size as the system 3 illustrated in Figures 3 to 5 and the system 303 has the same size predetermined that the system 103 shown in Figures 6 to 8.
- the securing member does not have a generally cylindrical shape or a generally oblong shape, but rather a generally rectangular shape, or even parallelepipedal shape; and where appropriate, the body of the tool also has a generally rectangular shape, or parallelepipedic;
- the securing member does not have a contact surface similar to that of the positioning and centering pin but rather a contact surface smaller than or greater than that of the pin;
- the securing member and / or the positioning and centering pin do not have respectively a central hole and / or central hole, but the securing member and / or the positioning pin are rather full;
- the securing member does not have a gripping tab for the withdrawal of the assembly formed by this member and the positioning pin and centering; and therefore the body of the tool does not have notch formed in its peripheral flange to receive such a tab;
- the positioning and centering pin has no protrusion for the removal of the assembly formed by this member and the positioning pin and centering; and therefore the body of the tool does not have notch formed in its peripheral rim to receive such a protuberance;
- the positioning and centering peg does not have a positioning tab projecting from the base of the peg but rather recesses formed in this base; and where appropriate, the body of the tool does not have notches configured to receive such lugs but rather protuberances configured to engage in the recesses of the pin; -
- the positioning and centering pin and the securing member visible in Figures 3 to 5 do not have a large diameter of about 20mm, but more generally a large diameter between about 18mm and 22mm;
- the positioning and centering pin and the securing member visible in Figures 6 to 9 do not have an average diameter of about 16mm, but rather generally a mean diameter of between about 14mm and 18mm;
- the common bar is not a connecting bar of the two tools but serves for the ejection of the assembly "pin - securing member";
- the tool is not integrated directly into the shell of a machine such as that illustrated in FIG. 1, but this tool is rather distinct and is thus said to be individual;
- the system is wrapped in a packaging, also called blister, with the positioning and centering pin and the securing member which are mounted on the tool; and if necessary the assembly formed of the system and the packaging is easily transportable and storable;
- the system is wrapped in a packaging, also called blister, with the positioning and centering pin and the securing member which are each in various different spaces of the blister; and if necessary the assembly formed of the system and the packaging is easily transportable and storable;
- the group illustrated in FIGS. 9 to 12 does not have two separate, interlockable tool bodies having a common bar, but rather the group has two tool bodies molded in one piece of plastic material, each of the bodies having his own stud and his own stem; and or
- FIGS. 9 to 12 does not comprise only two tools but rather 3 or even 4 tools that are distinct from one another.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Prostheses (AREA)
- Eyeglasses (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1251929A FR2987572B1 (fr) | 2012-03-02 | 2012-03-02 | Systeme comportant un pion de positionnement et de centrage pour lentille ophtalmique, un organe d'assujettissement et un outil pour le positionnement dudit organe d'assujettissement sur ledit pion de positionnement et de centrage |
| PCT/FR2013/050334 WO2013128096A1 (fr) | 2012-03-02 | 2013-02-19 | Système comportant un pion de positionnement et de centrage pour lentille ophtalmique, un organe d'assujettissement et un outil pour le positionnement dudit organe d'assujettissement sur ledit pion de positionnement et de centrage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2819810A1 true EP2819810A1 (fr) | 2015-01-07 |
| EP2819810B1 EP2819810B1 (fr) | 2016-04-20 |
Family
ID=47901192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13710479.0A Active EP2819810B1 (fr) | 2012-03-02 | 2013-02-19 | Système comportant un pion de positionnement et de centrage pour lentille ophtalmique, un organe d'assujettissement et un outil pour le positionnement dudit organe d'assujettissement sur ledit pion de positionnement et de centrage |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9802287B2 (fr) |
| EP (1) | EP2819810B1 (fr) |
| CN (1) | CN104159706B (fr) |
| FR (1) | FR2987572B1 (fr) |
| WO (1) | WO2013128096A1 (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD748268S1 (en) * | 2013-09-06 | 2016-01-26 | Essilor International (Compagnie Générale d'Optique) | Tracer-centrer-blocker for ophthalmic lenses and spectacle frames |
| US20170274829A1 (en) * | 2016-03-25 | 2017-09-28 | Ford Global Technologies, Llc | Interior and exterior cargo management system incorporating a grate |
| US12654023B2 (en) | 2016-05-10 | 2026-06-16 | Btl Medical Solutions A.S. | Aesthetic method of biological structure treatment by magnetic field |
| US12145239B2 (en) * | 2019-03-15 | 2024-11-19 | Essilor International | Method for assisting a user in applying an adhesive label to the surface of an ophthalmic lens with an initial contour prior to an edge grinding operation, and device for implementing the method |
| USD952158S1 (en) * | 2019-04-26 | 2022-05-17 | Lambda-X S.A. | Instrument for measuring, controlling, and testing optical lenses |
| USD1079949S1 (en) * | 2023-05-17 | 2025-06-17 | Essilor International | Lens tracer blocker for ophthalmic lenses or spectacle frames |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3962833A (en) * | 1975-03-31 | 1976-06-15 | Minnesota Mining And Manufacturing Company | Method for the alteration of a lens and an adhesive lens blocking pad used therein |
| NL8502142A (nl) * | 1985-07-26 | 1987-02-16 | Optimed Nv | Werkwijze voor het vervaardigen van een brilleglas voor bijzienden. |
| JP3872691B2 (ja) * | 2000-02-22 | 2007-01-24 | Hoya株式会社 | レンズ用レイアウト・ブロック装置および未加工レンズのブロック方法 |
| FR2825466B1 (fr) | 2001-06-05 | 2003-10-17 | Essilor Int | Dispositif de detection automatique de caracteristiques d'un verre ophtalmique et dispositif de positionnement automatique d'un pion de centrage et d'entrainement comprenant un tel dispositif de detection |
| FR2890189B1 (fr) | 2005-08-31 | 2008-02-01 | Essilor Int | Methode de pilotage de palpeur pour lecture de drageoir de monture de lunettes |
| CN101210988A (zh) * | 2006-12-25 | 2008-07-02 | 鸿富锦精密工业(深圳)有限公司 | 镜头模组及相机模组 |
| FR2915289B1 (fr) | 2007-04-18 | 2009-07-03 | Essilor Int | Dispositif et procede de preparation d'une lentille ophtalmique en vue de son usinage |
| US8182314B2 (en) * | 2008-11-08 | 2012-05-22 | James Gregory Goerges | Automated edged lens deblocking system |
| JP2010158727A (ja) * | 2009-01-06 | 2010-07-22 | Hoya Corp | レンズ加工用パッド、その製造方法、プラスチックレンズの製造方法および粘着部材 |
-
2012
- 2012-03-02 FR FR1251929A patent/FR2987572B1/fr active Active
-
2013
- 2013-02-19 CN CN201380011900.XA patent/CN104159706B/zh active Active
- 2013-02-19 US US14/382,362 patent/US9802287B2/en active Active
- 2013-02-19 EP EP13710479.0A patent/EP2819810B1/fr active Active
- 2013-02-19 WO PCT/FR2013/050334 patent/WO2013128096A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013128096A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2987572B1 (fr) | 2014-04-18 |
| EP2819810B1 (fr) | 2016-04-20 |
| WO2013128096A1 (fr) | 2013-09-06 |
| CN104159706B (zh) | 2016-11-09 |
| CN104159706A (zh) | 2014-11-19 |
| US20150024664A1 (en) | 2015-01-22 |
| FR2987572A1 (fr) | 2013-09-06 |
| US9802287B2 (en) | 2017-10-31 |
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