JP3928508B2 - Eyeglass lens processing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spectacle lens processing apparatus, and more particularly to a spectacle lens processing apparatus capable of forming a wiping print or hidden mark on a single focus lens and a progressive multifocal lens.
[0002]
[Prior art]
In a spectacle store, in order to incorporate a spectacle lens into a spectacle frame desired by a customer, an operation called frame engraving is performed in which the outer shape of the spectacle lens is cut according to the shape of the frame. In that case, when the customer wears spectacles, it is necessary to position and process the eyeglass lens so that the fitting point of the spectacle lens coincides with the pupil center of the eye. Further, in the case of a progressive multifocal spectacle lens, it is necessary to identify the right and left of the spectacle lens and the vertical direction.
[0003]
Therefore, advanced technology is required for workers engaged in frame processing. Especially in the frame work of progressive multifocal lenses, it is not easy to measure the frequency, and it is difficult to ensure the frame accuracy, so the spectacle lens delivered to the spectacle store so that the worker can work easily and accurately The surface is preliminarily marked with a layout pattern that is a guide for work.
[0004]
FIG. 5A shows an example of a layout pattern marked on the progressive multifocal lens. This layout pattern includes, for example, a horizontal reference line 101 that indicates the horizontal direction of the progressive multifocal lens 100, a distance power measurement position 102 that indicates the position at which the distance portion power is measured, and a position at which the near portion power is measured. It is composed of layout symbols such as a near power measurement position 103 shown, a fitting point 104, and left and right identification symbols 105. The progressive multifocal lens 100 is provided with an inconspicuous permanent hidden mark 106 transferred from a mold. The layout pattern contains a pigment, an epoxy resin, an organic solvent, etc., and is marked with ink that can be erased with alcohol or the like.
[0005]
Before printing such a layout pattern, it is necessary to detect the hidden mark 106 of the progressive multifocal lens 100, obtain a reference position such as the fitting point 104, and align the progressive multifocal lens.
[0006]
Further, in the case of a single-focus spectacle lens, as shown in FIG. 5B, after measuring the optical performance of the single-focus lens 100b, the position is obtained, for example, obliquely toward the ear side from the position of the obtained optical center (fitting point) OC. There is a case where the hidden mark 107 is formed so as not to be conspicuous at a position about 17 mm apart at an upper 45 ° angle.
[0007]
Conventionally, layout pattern marking has been performed by a stamp-type printing apparatus, and hidden marks have been formed by a marking apparatus. Since the alignment methods of the progressive multifocal lens 100 and the single-focus lens 100b are different, the respective apparatuses are different. Thus, the progressive multifocal lens 100 and the single focus lens 100b are aligned.
[0008]
[Problems to be solved by the invention]
However, the spectacle lens may require both printing of these layout patterns and formation of hidden marks. In this case, it is necessary to align the spectacle lens for each device. In the spectacle lens that requires both the printing of the layout pattern and the formation of the hidden mark, the alignment is performed in an overlapping manner. Therefore, there is a problem that productivity is reduced.
[0009]
Moreover, since it is necessary to equip each processing apparatus with an alignment apparatus for each of the progressive multifocal lens and the monofocal lens, there is a problem that the apparatus becomes large and the equipment cost becomes large.
[0010]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a spectacle lens processing apparatus that can share the alignment of spectacle lenses for various processing of spectacle lenses and can reduce the size of the apparatus. .
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present inventor has found that it is effective to use an eyeglass lens processing apparatus using a lens transport jig that can be fixed to and separated from an eyeglass lens as a common jig for alignment. did. That is, if the standard of the chuck of each lens processing apparatus is unified and the lens transport jig is mounted on the chuck so that the lens transport jig can be mounted at a predetermined reference position and direction, In this case, the lens conveying jig is mounted on a chuck of each lens processing device such as a layout pattern printing device or a hidden mark forming device. Sometimes the spectacle lens can be accurately positioned. For this reason, the spectacle lens processing apparatus using such a lens conveying jig can eliminate the need for aligning the spectacle lens for each lens processing apparatus. Since it is not necessary to provide an alignment apparatus for each processing apparatus, the apparatus can be miniaturized. After the processing is completed, the lens conveying jig can be circulated and used by separating the spectacle lens and the lens conveying jig at the jig separating portion.
[0012]
Further, as described above, the single focus lens and the progressive multifocal lens are different in the alignment method. Therefore, a single focus lens jig mounting portion that positions and fixes the single focus lens and the lens transport jig with each other, and a progressive multi lens that aligns and fixes the progressive multifocal lens and the lens transport jig with each other. It is effective to provide one or both of the focus lens jig mounting portions. When both of these mounting portions are provided, both the single focus lens and the progressive multifocal lens can flow simultaneously in the apparatus, and the production efficiency can be improved.
[0013]
By constructing the lens conveying jig so that the spectacle lens is vacuum-sucked and the vacuum suction can be maintained by a valve, the spectacle lens can be easily fixed by vacuum suction.
[0014]
In addition, by using a check valve in which the valve body is made of a high magnetic permeability material as a valve, and by constructing a member other than the valve body with a material that does not magnetize, a magnet is attached to the check valve that maintains vacuum adsorption. By actuating, the check valve can be moved, and the eyeglass lens can be easily separated by breaking the vacuum.
[0015]
Further, in stamp type printing, it is difficult to simultaneously flow a single focal lens and a progressive multifocal lens in the apparatus and perform a wide variety of printing on them. The method of printing with is preferable.
[0019]
Accordingly, the invention according to claim 1 is held by the lens transport jig, a jig mounting portion that fixes and fixes the spectacle lens and the lens transport jig that can be fixed and separated to the spectacle lens. In the spectacle lens processing apparatus comprising: a marking unit that performs marking on the spectacle lens with reference to an arrangement position of the lens transport jig; and a jig separation unit that separates the lens transport jig from the spectacle lens. A conveying jig that sucks the eyeglass lens surface, a suction unit connected to a decompression source, a communication unit that hermetically communicates the suction unit and the suction unit, and blocks and opens the communication unit; Provided is a spectacle lens processing device comprising a possible valve and a mounting portion mounted on a chuck of the lens processing device.
[0020]
According to a second aspect of the present invention, in the eyeglass lens processing apparatus according to the first aspect, the lens conveying jig is a check valve using a valve body in which the valve is made of a high magnetic permeability material. Provided is a spectacle lens processing apparatus in which other members are made of a non-magnetized material.
[0021]
According to a sixth aspect of the present invention, in the eyeglass lens processing apparatus according to the third aspect, the printing unit ejects hot-melted hot-melt ink from the fine nozzles as fine droplets onto the spectacle lens surface. An eyeglass lens processing apparatus is provided that performs printing.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a spectacle lens processing apparatus according to the present invention will be described below with reference to the drawings.
[0023]
Prior to the description of the eyeglass lens processing apparatus, the lens conveying jig which is the premise of this apparatus will be described.
[0024]
FIG. 2 is a side view showing the outline of the lens transport jig, and the outline of the internal structure is shown by a broken line. This lens conveying jig 10 has a cylindrical cylindrical body 11 in an airtight manner with an adsorbing part 12 adsorbed on the spectacle lens surface, an aspirating part 13 connected to a decompression source, and the adsorbing part 12 and the attracting part 13. And a check valve 15 capable of blocking and opening the communication portion 14.
[0025]
The suction part 12 is provided with a packing 121 such as a V-packing formed in a ring shape with a V-shaped cross section, for example, at the upper end opening of the cylindrical main body 11. This packing 121 is brought into close contact with the convex surface 111 or the concave surface 112 of the spectacle lens 100 (in the case of a spectacle lens, including both a single focus lens and a progressive multifocal lens), thereby opening the opening of the gap in the cylindrical main body 11. The convex surface 111 or the concave surface 112 of the spectacle lens 100 is sealed. The suction part 13 is provided in the lower part of the space | gap of the cylindrical main body 11, and the piping connected with the pressure reduction source can be mounted | worn now. A space in the cylindrical main body 11 serves as a communication portion 14 that allows the suction portion 12 and the suction portion 13 to communicate with each other, and a check valve 15 is disposed so that the communication portion 14 can be shut off and opened. The check valve 15 is provided with a valve body 153 that comes into contact with the valve seat 152 by an urging force of a spring 151 so as to be in close contact with and separated from the valve seat 152. When the valve body 153 is in close contact with the valve seat 152, the communication portion 14 is blocked, and when the valve body 153 is separated from the valve seat 152, the communication portion 14 is opened.
[0026]
The valve body 153 of the check valve 15 is made of a high magnetic permeability material, and is made of a material that does not magnetize the members of the jig other than the valve body 153. As a result, by bringing the magnet closer to the valve body 153 from the suction portion 13 side, the valve body 153 can be pulled toward the suction side by the magnetic force of the magnet to forcibly break the vacuum.
[0027]
Further, on the outer peripheral surface of the cylindrical main body 11, positioning mounting portions 16 and 17 constituted by a plurality of planes are provided in two upper and lower stages. When either one of the upper and lower mounting portions 16 and 17 is gripped by the arm of the transport device, the center axis of the jig and the direction of the jig are accurately determined. The mounting portions 16 and 17 are provided in the upper and lower two stages for delivery from the transfer device to another transfer device.
[0028]
Such a lens transport jig 10 is used in a state where the lens transport jig 10 is in close contact with the convex surface 111 or the concave surface 112 of the spectacle lens 100 in which the contact portion 12 is aligned in a predetermined position and direction. The part 13 is connected to a decompression source, the gap of the cylindrical body 11 is decompressed, and the convex surface 111 or the concave surface 112 of the spectacle lens 100 is vacuum-sucked to the suction part 12. When the connection between the suction unit 13 and the decompression source is released, the check valve 15 is activated to shut off the communication unit 14, and between the valve body 153 of the check valve 15 and the suction unit 12 closed by the spectacle lens. The pressure reduction of the air gap is maintained, and the adsorption of the spectacle lens 100 is maintained. Thereby, the lens transport jig 10 is fixed to the spectacle lens 100. The lens conveying jig 10 holding the spectacle lens 100 is processed by accurately positioning the lens conveying jig 10 by grasping the mounting portions 16 and 17 from both sides with a pair of V-shaped chucks by a conveying device. Can be carried into the device.
[0029]
After the processing of the spectacle lens is completed, the magnet is brought close to the valve body 153 from the suction part 13 side, thereby pulling the valve body 153 to the suction part 13 side, forcibly breaking the vacuum, and transporting the spectacle lens 100 to the lens. It can be easily separated from the jig 10. The separated lens conveyance jig 10 is used in a circulating manner.
[0030]
The lens conveyance jig 10 can be vacuum-adsorbed to the convex surface or the concave surface of the single-focus spectacle lens or the progressive multifocal lens by the contact portion 12.
[0031]
The eyeglass lens processing apparatus of the present invention using such a lens conveying jig 10 will be described.
[0032]
FIG. 1 is a plan view showing an overall schematic configuration of a spectacle lens processing apparatus according to the present invention. The eyeglass lens processing apparatus 1 is a marking apparatus that mainly prints a layout pattern and forms a hidden mark on an eyeglass lens.
[0033]
The eyeglass lens processing apparatus 1 includes a jig mounting unit 2, a marking unit 3, and a jig separating unit 4. The jig mounting unit 2 includes a single focus lens jig mounting unit 5 and a progressive multifocal lens. The marking unit 3 includes a printing unit 7 and a hidden mark forming unit 8. The standards of the chucks of the respective conveying devices arranged in the apparatus are unified so that the mounting portions 16 and 17 of the lens conveying jig 10 can be grasped and accurately positioned.
[0034]
Since the single focus lens and the progressive multifocal lens have different alignment methods, the jig mounting part 2 is composed of a single focus lens jig mounting part 5 and a progressive multifocal lens jig mounting part 6. Functions as a supply unit for each lens.
[0035]
The single focus lens jig mounting unit 5 measures the optical performance of the single focus lens, positions the single focus lens for each type of single focus lens, and fixes the single focus lens to the lens transport jig in the positioned state. The single-focus lens 100b is positioned and placed at a predetermined position of the turntable-like mounting table 51, and the mounting table 51 is rotated so that the first transport device 21 sucks and holds the single-focus lens, for example. The lens is transferred to the second transport device 22. The second transport device 22 places the single focus lens 100b at the measurement position of the lens meter 52 with the geometric center of the single focus lens 100b as a reference. The lens meter 52 measures the power of the single focus lens, the astigmatic axis direction, and the prism base direction, and the position of the optical center can be automatically calculated by a program. The lens meter 52 divides the lens into a single focus lens that does not include astigmatism, a single focus lens that has astigmatism correction characteristics, and a single focus lens that includes a prism prescription.
[0036]
The single focus lens whose optical performance has been measured by the lens meter 52 is transferred from the second transport device 22 to the alignment unit 53.
[0037]
The alignment unit 53 arranges the single focus lens so as to be rotatable around the geometric center of the single focus lens, and arranges the lens transport jig 10 with the suction unit 12 positioned directly below the single focus lens. A pipe connected to a decompression source is connected to the suction portion 13 of the lens conveying jig 10. In the alignment unit 53, the lens transport jig 10 is disposed so that, for example, the center axis thereof coincides with the geometric center of the single focus lens and is in a predetermined direction.
[0038]
The alignment unit 53 rotates the single focus lens based on the measurement value of the optical performance so that, for example, the geometrical center of the single focus lens is the center, and the prism base direction and the astigmatic axis direction are in a predetermined direction. A single focus lens that does not include astigmatism is rotated so that the optical center is deviated to the nose side with respect to the geometric center. The astigmatism lens can be arranged in a predetermined direction by rotating it 180 degrees. For this reason, the astigmatic lens is selected from any of 180 ° symmetrical arrangements, but the direction in which the optical center is biased toward the nose side is selected.
[0039]
The alignment unit 53 aligns the geometric center of the single focus lens arranged in a predetermined direction with the center axis of the lens transport jig 10, and aligns the direction of the lens transport jig 10 and the direction of the single focus lens. The single focus lens is sucked and held on the lens transport jig 10.
[0040]
On the other hand, the progressive multifocal lens jig mounting portion 6 performs alignment of the progressive multifocal lens and suction holding of the lens transport jig. FIG. 3 shows a schematic configuration of the progressive multifocal lens jig mounting portion 6.
[0041]
As shown in FIG. 3, for example, the progressive multifocal spectacle lens 100 is placed on a table (not shown), for example, with the convex side facing up, so that the suction portion 12 is in contact with the approximate center of the concave surface of the progressive multifocal spectacle lens 100. The lens conveying jig 10 is disposed at a predetermined position below the progressive multifocal lens 100. At this time, a pipe 61 connected to a decompression source (not shown) is inserted into the suction portion 13 in close contact with a packing attached to the tip, but the pipe 61 and the decompression source are not in communication. Further, a disc-shaped ground glass 62 provided with an opening through which the lens transport jig 10 can pass is disposed so as to surround the lens transport jig 10.
[0042]
Laser light L is irradiated from a laser irradiation apparatus (not shown) to the progressive multifocal lens 100 through a glass plate 64 provided with an alignment mark 63 corresponding to the position of the hidden mark 107 of the progressive multifocal lens 100, and the transmitted light. Is projected onto the ground glass 62. While viewing the projected image on the monitor, the position is adjusted by moving the progressive multifocal lens 100 up and down, left and right, and further rotating so that the position of the hidden mark 107 coincides with the position of the alignment mark 63. Thereby, the center axis of the lens conveying jig 10 and the fitting point of the progressive multifocal lens 100 are accurately aligned, and the parallel flat surface 161 of the mounting portion 16 of the lens conveying jig 10 is opposed to the progressive multifocal lens 100, for example. It can be positioned according to the horizontal direction.
[0043]
Next, the suction unit 13 is depressurized by allowing the pipe 61 connected to the depressurization source to communicate with the depressurization source. Accordingly, the suction unit 12 is decompressed by the decompression source, the V packing 121 is attracted to the concave surface of the progressive multifocal lens 100, and the progressive multifocal lens 100 and the lens transport jig 10 are fixed to each other by the decompression of the suction unit 12. Is done. When the connection with the decompression source is released, the valve body 153 is strongly pressed against the valve seat 152 at the atmospheric pressure, and the communication portion 14 is blocked by the valve body 153. As a result, the reduced pressure state in the suction unit 12 is maintained, the suction state of the progressive multifocal lens 100 by the lens transport jig 10 is maintained, and the holding force of the progressive multifocal lens 100 by the lens transport jig 10 is maintained. The
[0044]
The progressive multifocal lens jig mounting portion 6 is provided on the front side of the turntable 65. The lens transport jig 10 that holds the progressive multifocal lens 100 by suction moves to the back side of the processing apparatus by rotating the turntable 65, and is gripped by the chuck of the third transport apparatus 23, and the printing unit 7. To the fourth transfer device 24. The fourth transport device 24 can finely adjust the position in the vertical direction in addition to transport in the horizontal direction.
[0045]
The printing unit 7 prints a layout pattern on the surface of the spectacle lens with erasable ink, and its schematic configuration is shown in FIG. The printing unit 7 of the present embodiment uses an apparatus that discharges and prints hot-melt ink using an inkjet method. In the spectacle lens processing apparatus 1 of the present embodiment, since it is necessary to perform printing of both a single focus lens and a progressive multifocal lens, a wide variety of print patterns are required. For this reason, it is difficult to cope with the stamp type printing apparatus, and an ink jet type capable of freely selecting a print pattern is advantageous. In addition, since the surface of the spectacle lens is generally water-repellent, it is difficult to print with a normal ink with excellent fixability, and it is effective to use hot melt ink because of its fixability and ease of wiping. It is. This hot melt ink is a thermoplastic resin composition containing, for example, a glycerol ester of hydrogenated rosin, a wax, and a colorant. The hot melt ink is solid at room temperature and is heated and melted at about 80 to 140 ° C. to be liquefied.
[0046]
The printing unit 7 includes a height adjusting device 71 and a printing device 72, and the lens transport jig 10 in which the fourth transport device 24 sucks and holds the spectacle lens 100 is carried into these devices. The fourth transport device 24 is configured to adjust the height of the lens transport jig 10 holding the single focus lens by the alignment unit 53 or the lens transport jig 10 holding the progressive multifocal lens received from the third transport device 23. Carry in.
[0047]
The lens height adjusting device 71 adjusts the vertical position of the lens conveying jig 10 so as to minimize the gap between the spectacle lens 100 and the inkjet head 721 of the printing device 62 and to secure a clearance. is there. The lens height adjusting device 71 includes a height measuring device 711 that measures the maximum height of the spectacle lens 100 held by the lens transport jig 10, and a height adjusting unit 712.
[0048]
In the present embodiment, the height measuring device 711 uses a detection device using laser light. The light receiving unit 714 detects a strip-shaped laser beam L emitted in the horizontal direction from the laser projector 713 in the horizontal direction, and detects the ratio of the laser beam L blocked on the way, thereby increasing the height of the object to be detected. Can be determined. By using the laser beam L, the height can be discriminated without contact. The maximum height of the spectacle lens 100 is the height of the peripheral edge of the concave surface when printing on the concave surface, and is approximately the center of the convex surface when printing on the convex surface.
[0049]
The height adjusting unit 712 controls the fourth transport device 24 based on the measured value of the maximum height of the spectacle lens 100 detected by the height measuring device 711 and moves the lens transport jig 10 up and down to move the spectacle lens. The maximum height of 100 is adjusted, and the minimum distance between the spectacle lens 100 and the inkjet head 721 of the printing apparatus 72 is adjusted to about 0.5 to 5 mm.
[0050]
The lens transport jig 10 whose vertical position is corrected by the height adjusting unit 712 is transported to the printing device 72 in the horizontal direction by the fourth transport device 24 while maintaining the vertical position.
[0051]
The printing apparatus 72 discharges hot-melted hot melt ink from a minute nozzle that opens downward, heat-melts the solid hot-melt ink, and supplies the molten hot-melt ink to the inkjet head 721. The ink supply unit 722, the pattern generation unit 723 that generates a layout pattern to be marked, the ink ejection control of the inkjet head 721, and the horizontal movement of the fourth transport device 24 that holds the lens transport jig 10 are controlled. And a control unit 724.
[0052]
The ink supply unit 722 has a function of thermally melting solid hot melt ink at room temperature and supplying the melted hot melt ink to the inkjet head 721 via the supply path 725.
[0053]
Although not shown, the inkjet head 721 includes a heater that maintains the temperature of the supplied molten hot-melt ink and a minute nozzle that discharges downward in the vertical direction. This micro nozzle is constituted by, for example, a piezo-type or bubble-type ink jet discharge mechanism, and an individual signal is given to each micro-nozzle to control ink discharge. There is a limit to the distance at which ink can be ejected almost accurately with a minute nozzle. If the distance to the landing point is too long, printing may become unclear or the liquid hot melt ink may solidify. Therefore, the height adjustment unit 712 is adjusted so that the separation distance between the inkjet head 721 and the spectacle lens 100 is minimized. The minute droplets of hot melt ink ejected from the minute nozzle land on the surface of the spectacle lens, and are cooled and solidified to be fixed on the surface of the spectacle lens. Even if the surface of the spectacle lens is subjected to water repellent treatment, the fixability is good.
[0054]
The pattern generation unit 723 generates a layout pattern for marking with the inkjet head 721. The layout pattern is prepared in advance for each product, each destination, each design specification, etc., and is stored in the memory or in the host computer. Further, a mark such as the symbol 108 indicating a fine product type as shown in FIG. 5 may be produced for each spectacle lens, or a frequently used layout pattern is prepared and a part thereof is prepared. May be changed depending on circumstances.
[0055]
The control unit 724 controls the timing of ink ejection from each minute nozzle of the inkjet head 721 and sets the relative distance between the minute nozzle of the inkjet head 721 in the radial direction of the spectacle lens 100 and the spectacle lens 100 to the fourth transport device. 24 to control. 4, the inkjet head 721 is fixed, the lens transport jig 10 is driven in the horizontal direction, and a predetermined pattern of marks is printed at the position of the lens transport jig 10 by synchronizing the discharge of minute nozzles. It is supposed to be. Conversely, the lens conveyance jig 10 may be fixed and the inkjet head 721 may be moved, or both the lens conveyance jig 10 and the inkjet head 721 may be moved.
[0056]
The fourth transport device 24 transports the lens transport jig 10 holding the spectacle lens after printing to the temporary placement table 81 of the hidden mark forming unit 8.
[0057]
The hidden mark forming unit 8 includes two hidden mark forming devices 82 and 82, and a fifth transfer device 25 that supplies the hidden mark forming device 82 with the lens transfer jig 10 that holds a spectacle lens. The reason why the two hidden mark forming apparatuses 82 are arranged is that the processing speed of the hidden mark forming apparatus 82 is lower than that of the other processes, so that the processing speed is matched. The fifth transport device 25 includes two chucks attached in an L shape to the turntable, and the lens transport jig 10 that holds the spectacle lens placed on the temporary placement table 81 is open and hidden. It is conveyed to the mark forming device 82.
[0058]
As the hidden mark forming device 82, it is necessary to form a hidden mark on both the single focus lens and the progressive multifocal lens. Therefore, a variety of hidden marks can be formed. For example, a diamond pen can be engraved with a computer-controlled free pattern. Examples of the marking device that can be used include a laser marking device that irradiates a laser and forms a hidden mark with the laser.
[0059]
The hidden mark formed by the hidden mark forming device 82 is, for example, a hidden mark 107 such as a quality assurance mark as shown in FIG. 5B in the case of a single focus lens, and in the case of a progressive multifocal lens, for example, A quality assurance mark, a symbol indicating the design type, a symbol indicating the addition, and the like are formed.
[0060]
The spectacle lens on which the hidden mark is formed is unloaded from the hidden mark forming unit 8 by the fifth transfer device 25 and transferred to the jig separating unit 4.
[0061]
The jig separation unit 4 includes a magnet (not shown) that is inserted into the suction unit 13 of the lens conveyance jig 10. The fifth transfer device 25 is configured so that the suction portion 13 of the lens transfer jig 10 holding the spectacle lens is held on the magnet of the jig separation portion 4 so that the magnet approaches the valve body 153 of the check valve 15. The lens conveying jig 10 is conveyed. Thereby, the valve body 153 is attracted by the magnetic force of the magnet, a gap is generated between the valve seat 152 and the valve body 153, and vacuum breakage is performed. Due to the vacuum break, the attractive force of the lens transport jig 10 disappears, and the spectacle lens 100 and the lens transport jig 10 are naturally separated.
[0062]
The separated lens conveyance jig 10 is chucked by the sixth conveyance device 26, conveyed to the jig stocker 41, stored, and reused. The spectacle lens separated from the lens transport jig 10 is transported to the material removal conveyor 28 by the seventh transport device 27 that holds it by suction and stocked. The lens transport jig 10 is supplied from the jig stocker 41 to the back side of the jig suction unit 6 by a transport means (not shown). In addition, when a lens is inserted from the mounting table 51, the lens transport jig 10 is supplied from the back side of the jig suction unit 6 to the alignment unit 53.
[0063]
A method for forming a print or a hidden mark separately for a single-focus spectacle lens and a progressive multifocal spectacle lens using the spectacle lens processing apparatus 1 will be described. In the case of a single-focus spectacle lens, the single-focus lens jig mounting unit 5 distinguishes a single-focus lens that does not include astigmatism, a single-focus lens that has astigmatism correction characteristics, and a single-focus lens that includes a prism prescription, and each has a predetermined direction. Is held by the lens conveyance jig 10 by the alignment unit 53 so as to be.
[0064]
Next, when an alignment pattern is necessary, it is transported to the printing unit 7 and printed on the lens surface based on the optical center, astigmatism axis, and prism base direction of the alignment pattern measured with erasable ink. When the alignment pattern is not necessary, it passes through the printing unit 7 and is conveyed to the hidden mark forming unit 8. In the hidden mark forming unit 8, based on the detected optical center, a lens transport jig 10 fixed to a single focus lens including astigmatism, a single focus lens having astigmatism correction characteristics, and a single focus lens including a prism prescription. For example, a hidden mark 107 as shown in FIG. 5B is formed with the mounting portions 16 and 17 as reference positions, that is, with reference to the respective optical centers.
[0065]
In the case of a progressive multifocal lens, either a so-called outer surface progressive lens having a progressive surface provided on the convex surface side or a so-called inner surface progressive lens provided on the concave surface side can be applied. In the progressive multifocal lens jig mounting portion 6, the lens transport jig 10 has a reference point such as a fitting point and a geometric center that coincides with the central axis of the lens transport jig 10 and has a predetermined orientation. Is adsorbed and retained.
[0066]
The printing unit 7 prints an alignment pattern as shown in FIG. 5A with the mounting unit 16 of the lens transport jig 10 as a reference position. Further, when it is necessary to form a hidden mark, the hidden mark is formed in the hidden mark forming unit 8. When the hidden mark is unnecessary, it is directly conveyed from the temporary placing table 81 to the jig separating unit 4 by the fifth conveying device.
[0067]
As described above, the eyeglass lens processing apparatus 1 according to the present embodiment selects and processes printing with erasable ink and formation of hidden marks while mixing and flowing a single focus lens and a progressive multifocal lens. It is possible. This is achieved by using a lens transport jig 10 and performing alignment with various processing devices with reference to the lens transport jig 10 in which the spectacle lens and the lens transport jig 10 are aligned and fixed to each other. It has become possible. Therefore, by using the lens conveying jig 10, the eyeglass lens needs to be aligned only once regardless of the number of lens processing apparatuses, so that productivity can be improved.
[0068]
For example, it is conceivable that the eyeglass lens that has been aligned is gripped by a chuck without using a lens transport jig and transported to the printing unit 7 and the hidden mark forming unit 8 while being gripped by the chuck. There is a drawback that the apparatus becomes large and the apparatus becomes large.
[0069]
Further, in the conventional printing apparatus and hidden mark forming apparatus, a progressive multifocal lens alignment apparatus and a single focus lens alignment apparatus were installed, respectively, but in the spectacle lens processing apparatus of the present embodiment, Since the progressive multifocal lens alignment device and the single focus lens alignment device are common to the printing apparatus and the hidden mark forming apparatus, the apparatus can be miniaturized.
[0070]
The eyeglass lens processing apparatus of the present invention is not limited to the above description. For example, in the above description, the lens transport jig 10 that is sucked and held on the surface of the spectacle lens is used. However, the lens transport jig can be positioned when mounted on the chuck of the processing apparatus, and is attached to the spectacle lens. The mechanism is not limited as long as it can be fixed and separated.
[0071]
In addition, as a printing apparatus, an apparatus that prints by discharging hot melt ink by an inkjet method has been described. However, a stamp type printing apparatus can be used although the types of patterns are limited. The stamp type printing apparatus prepares an intaglio for each layout pattern in advance and transfers the intaglio using the intaglio. Specifically, the groove portion of the intaglio is filled with ink, a flexible resin (rubber) is pressed onto the intaglio, the ink is transferred to the resin, and then the resin is pressed against the surface of the spectacle lens to transfer the ink. The method is used.
[0072]
Furthermore, in the above description, the printing unit and the hidden mark forming unit have been described as the spectacle lens processing device, but other processing devices may be added. For example, frame processing for grinding a spectacle lens into the shape of a spectacle frame also requires alignment, and therefore can be framed while being held by a lens transport jig. For this reason, a frame forming (lens processing) device may be added to the present device, and the jig separating portion may be provided after the frame forming.
[0073]
【The invention's effect】
Since the eyeglass lens processing apparatus of the present invention uses the lens conveying jig, the position adjustment of the eyeglass lens can be made common to various processes of the eyeglass lens, and the apparatus can be miniaturized.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an embodiment of a spectacle lens processing apparatus according to the present invention.
FIG. 2 is a side view showing an embodiment of a lens transport jig used in the eyeglass lens processing apparatus of the present invention.
FIG. 3 is a schematic configuration diagram illustrating a method for aligning a progressive multifocal lens.
FIG. 4 is a schematic configuration diagram of a printing unit of the eyeglass lens processing apparatus according to the present invention.
FIGS. 5A and 5B show examples of marking performed on the surface of a spectacle lens. FIG. 5A shows an example of a layout pattern, and FIG. 5B shows an example of a hidden mark.
[Explanation of symbols]
1 Eyeglass lens processing equipment
2 Jig mounting part
3 Marking part
4 Jig separation part
5 Single focus lens jig mounting part
52 Lens Meter
53 Positioning section
6 Progressive multifocal lens fixture mounting part
7 Printing department
71 Height adjustment device
72 Printer
8 Hidden mark formation part
21 First transfer device
22 Second transfer device
23 Third transfer device
24 Fourth transport device
25 Fifth transfer device
100 progressive multifocal lens
100b single focus lens

Claims (2)

A lens mounting jig that can be fixed to and separated from the spectacle lens and the spectacle lens are aligned and fixed to each other, and the lens transport jig is attached to the spectacle lens held by the lens transport jig. In a spectacle lens processing apparatus comprising a marking unit that performs marking with reference to the arrangement position of the lens, and a jig separating unit that separates the lens transport jig from the spectacle lens,
The lens conveying jig shuts off the communicating portion, an attracting portion that is attracted to the spectacle lens surface, a suction portion that is connected to a decompression source, a communication portion that hermetically communicates the attracting portion and the suction portion, and the communicating portion. And a spectacle lens processing apparatus comprising: an openable valve; and a mounting portion mounted on a chuck of the lens processing apparatus. The eyeglass lens processing apparatus according to claim 1,
The lens conveying jig is a check valve using a valve body in which the valve is made of a high permeability material, and a member other than the valve body is made of a material that is not magnetized. Processing equipment.

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