JP2013080012A - Application liquid applying device for spectacle lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an application liquid applying device for spectacle lens which allows the layer of an application liquid to be formed so as to be thin in thickness and uniform over a lens surface.SOLUTION: An application liquid applying device for spectacle lens includes an application liquid applying part 5 that sprays an application liquid from a spray nozzle 2 to apply it to a lens surface 4a of a spectacle lens 4. The application liquid applying part 5 makes the spray nozzle 2 face the lens surface 4a so that a center line L1 of the spray from the spray nozzle 2 almost coincides with a normal line L2 passing through a target application position 6 of the lens surface 4a while moving the spray nozzle 2 along the lens surface 4.

Description

  The present invention relates to a spectacle lens coating liquid coating apparatus for coating a spectacle lens with a coating liquid such as a hard coat liquid using a spray nozzle.

  Conventionally, in order to form a hard coat film on a plastic lens for spectacles (hereinafter simply referred to as a spectacle lens), a hard coat solution is applied to the spectacle lens and the hard coat solution is cured. As a method for applying a hard coat liquid to a spectacle lens, a dipping method, a spin coating method, a spray method, an ink jet method, and the like are known. Among these coating methods, the spray method is a method in which a coating liquid composed of a hard coating liquid is ejected from a spray nozzle and applied to the lens surface as described in Patent Document 1. The spray nozzle disclosed in Patent Document 1 is fixed above the lens, and is configured to discharge the coating liquid over the entire lens surface.

By the way, the hard coat film must be formed so as to have a uniform film thickness. This is because if the film thickness is not uniform, interference fringes are likely to occur on the lens surface of the spectacle lens.
As disclosed in Patent Document 2, for example, the interference fringes are hardly generated when the thickness of the hard coat film is 9.1 μm or more.

JP 2000-140745 A JP 2010-128420 A

  When the hard coat liquid is applied to the lens surface by the method disclosed in Patent Document 1 to form a hard coat film, there is a problem that interference fringes are likely to occur. The reason is considered that the hard coat liquid cannot be applied to the lens surface so that the thickness of the layer made of the hard coat liquid is uniform over the entire lens surface.

The problem that such interference fringes occur can be solved to some extent by setting the thickness of the hard coat film to 9.1 μm or more as described in Patent Document 2.
However, in order to increase the thickness of the hard coat film to 9.1 μm or more, the amount of the hard coat solution used for forming this film is remarkably increased, resulting in an increase in cost. In addition, since the entire volume of the hard coat film is increased, there is a problem that cracks are likely to occur due to a volume change or the like during curing (drying) after coating.

  The present invention has been made to solve such problems, and provides a coating liquid coating apparatus for spectacle lenses capable of forming a coating liquid layer on a lens surface so as to be thin and uniform over the entire surface of the lens surface. The purpose is to do.

  In order to achieve this object, a spectacle lens coating liquid coating apparatus according to the present invention includes a coating liquid coating unit that sprays a coating liquid from a spray nozzle in a mist shape to coat the lens surface of a spectacle lens, and The liquid application unit is configured to cause the spray nozzle to face the lens surface so that a center line of the spray ejected from the spray nozzle substantially coincides with a normal passing through the target application position of the lens surface. It is moved along the lens surface.

  According to the present invention, in the above invention, the coating liquid application unit rotates the spray nozzle about a first axis extending in a direction orthogonal to the spray centerline, A second rotating part that rotates the spray nozzle about a second axis orthogonal to the first axis, and supports the spray nozzle, the first rotating part, and the second rotating part. In addition, there is provided an articulated robot having an arm portion that moves in a radial direction of the spectacle lens and a direction in which the spectacle lens moves toward and away from the spectacle lens.

  According to the present invention, in the above invention, the coating liquid application unit includes a lens rotating unit that rotates the spectacle lens so that the optical axis is at the center.

  According to the present invention, in the above invention, the coating liquid application unit rotates the spray nozzle about a first axis extending in a direction orthogonal to the spray centerline, While supporting the 2nd rotation part which rotates a spray nozzle centering on the 2nd axis line orthogonal to the said 1st axis line, the said spray nozzle, the 1st rotation part, and the 2nd rotation part. An interval setting unit that moves the eyeglass lens in a direction in contact with and away from the spectacle lens, a parallel movement unit that translates the interval setting unit in the radial direction of the spectacle lens, and an optical axis of the spectacle lens. And a lens rotating unit that rotates the lens.

  According to the present invention, in the above invention, the coating liquid application unit includes a surface modification processing apparatus that performs a surface modification process on the lens surface so that wettability is increased when fine particles made of the coating liquid are attached. It is what.

  According to the present invention, the fine particles of the coating liquid sprayed from the spray nozzle and formed into a mist form fly along the normal of the lens surface and adhere to the target application position on the lens surface. When the fine particles strike the lens surface obliquely, they move on the lens surface after they strike the lens surface, or the coating pattern shape changes, so that the formed film thickness may change. However, in the present invention, since the fine particles hit perpendicularly to the target application position on the lens surface, most of the fine particles remain at the target application position, and it is considered that an application pattern as intended can be formed.

  That is, the amount of the application liquid applied to the target application position can be indirectly measured based on the amount of the application liquid ejected from the spray nozzle. This means that the coating liquid can be applied so that the film formed after the coating liquid is cured has a desired thickness.

As described above, the spray nozzle is moved along the lens surface so that the target application position moves to an uncoated part of the lens surface while the coating liquid is ejected from the spray nozzle. Fine particles adhere evenly.
Therefore, according to the present invention, the coating liquid layer can be formed so as to be thin and uniform in thickness over the entire lens surface. As a result, according to the spectacle lens coating solution coating apparatus according to the present invention, a hard coat film having a uniform film thickness of, for example, about 1 to 5 μm is obtained by using a hard coat solution as the coating solution. Can be formed. Since the hard coat film can be formed with a small thickness, it can be applied with a conventional film thickness, and since the film thickness is uniform, no interference fringes are generated.

It is a side view for demonstrating the schematic structure of the coating liquid coating device for spectacle lenses which concerns on this invention. It is a front view for demonstrating the schematic structure of the coating liquid coating device for spectacle lenses which concerns on this invention. It is a side view for demonstrating the specific structure of the coating liquid coating device for spectacles. It is a flowchart for demonstrating operation | movement of the coating liquid coating device for spectacle lenses. It is a perspective view which expands and shows the principal part. It is a top view which shows an example of the track | orbit of a spray nozzle. It is a top view which shows an example of the track | orbit of a spray nozzle. It is a top view which shows an example of the track | orbit of a spray nozzle. It is a side view which shows other embodiment of a coating liquid application part. It is a front view which shows other embodiment of a coating liquid application part. It is a flowchart for demonstrating operation | movement in the case of performing a surface modification process. It is a front view which shows other embodiment of the coating liquid coating device for spectacle lenses which concerns on this invention. It is a flowchart for demonstrating operation | movement of the coating liquid coating device by other embodiment.

(First embodiment)
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an eyeglass coating liquid coating apparatus according to the present invention will be described with reference to FIGS.
A spectacle coating liquid application apparatus 1 shown in FIG. 1 has a coating liquid application unit 5 that applies a coating liquid 3 from a spray nozzle 2 to a lens surface 4a of a plastic lens 4 for spectacles (hereinafter simply referred to as a spectacle lens). I have. The spray nozzle 2 ejects the coating liquid 3 in a mist form.

As shown in FIG. 1, the shape of the spray composed of the coating liquid 3 ejected from the spray nozzle 2 is a thin bar. That is, the spray nozzle 2 is used so that the coating liquid 3 is applied at a position where the spray center line L1 is directed and the application range can be specified. The coating liquid 3 used in this embodiment is a hard coat liquid. As the hard coat liquid, a thermosetting type or an ultraviolet curable type can be used. In addition to the hard coat solution, a photochromic solution for a light control lens can be used as the coating solution 3.
The spectacle lens 4 shown in FIG. 1 is supported by a lens support device (not shown) with a convex lens surface 4a pointing upward. The lens surface 4a to which the spectacles coating solution coating apparatus 1 applies the coating solution 3 is not limited to a convex surface, and may be a concave surface.

The coating liquid application unit 5 performs the above-described application using the following first to third functions.
The first function is a function of supplying the coating liquid 3 to the spray nozzle 2 and ejecting it from the spray nozzle 2 in the form of a mist. The coating liquid application unit 5 uses a pump (not shown) and a valve (not shown) that pressurize the coating liquid 3 to a predetermined ejection pressure when realizing the first function. This valve is for switching between a state in which the coating liquid 3 is ejected and a state in which the ejection is stopped.

  The second function is a function of changing the angle of the spray nozzle 2 with respect to the spectacle lens 4 so that the coating liquid 3 is sprayed perpendicularly to the lens surface 4a. The coating liquid application unit 5 determines the spray center line L1 ejected from the spray nozzle 2 and the target application position 6 (position where the coating liquid 3 hits) on the lens surface 4a so that the coating liquid 3 hits the lens surface 4a perpendicularly. The normal line L2 passing through is compared. That is, the coating liquid application unit 5 changes the installation angle of the spray nozzle 2 so that the spray center line L1 substantially coincides with the normal line L2.

  The normal line L2 can be obtained using shape data of the lens surface 4a measured using a measuring instrument (not shown), shape data used for manufacturing the spectacle lens 4, and the like. The normal line L2 is obtained for each minute section area of the lens surface 4a. The segmented area refers to one of the lens surfaces 4a divided into a number of areas. The area of the segmented region is preferably equal to or smaller than the area of the range in which the coating liquid 3 ejected from the fixed spray nozzle 2 is applied.

That is, the coating liquid application unit 5 substantially matches the normal L2 of the segmented region included in the target application position 6 and the center line L1 of the spray of the coating liquid 3. The data of the normal line L2 is stored in a memory (not shown) in the coating liquid application unit 5 before the coating liquid 3 is applied.
The third function is a function of moving the spray nozzle 2 along the lens surface 4a. Here, “move along the lens surface 4 a” means that the spray nozzle 2 is moved in the radial direction of the spectacle lens 4 while keeping the distance between the lens surface 4 a and the spray nozzle 2 substantially constant. To do.

The coating liquid application unit 5 having the above-described function can be realized using an articulated robot 11 as shown in FIG.
The multi-joint robot 11 shown in FIG. 3 is a six-axis robot having six rotating parts. The articulated robot 11 includes first and second rotating units 12 and 13 for rotating the spray nozzle 2, the spray nozzle 2, the first rotating unit 12, and the second rotating unit. And an arm portion 14 that supports the portion 13.

The first rotating portion 12 is configured to rotate the spray nozzle 2 with respect to the support member 15 about the first axis A1. The first axis A1 extends in a direction perpendicular to the center line L1 of the spray ejected from the spray nozzle 2 (a direction perpendicular to the paper surface of FIG. 3).
The 2nd rotation part 13 has taken the structure which rotates the said supporting member 15 centering on 2nd axis line A2 with respect to the arm part 14 (3rd arm 16) mentioned later. The second axis A2 extends in a direction orthogonal to the first axis A1 (longitudinal direction of the third arm 16).

The arm portion 14 supports the spray nozzle 2 and the first and second rotating portions 12 and 13, and contacts these with the radial direction (horizontal direction) of the spectacle lens 4 and the spectacle lens 4. It moves in the direction of separating (vertical direction). As shown in FIG. 3, the arm portion 14 according to this embodiment includes a base 17 and third to sixth rotating portions 18 to 21.
The third rotating portion 18 is configured to rotate the rotating table 22 about the third axis A3 on the base 17. The third axis A3 extends in the vertical direction.

The fourth rotating unit 19 is configured to rotate the first arm 23 about the fourth axis A4 with respect to the rotating table 22. The fourth axis A4 extends in the horizontal direction (direction perpendicular to the paper surface of FIG. 3).
The fifth rotation unit 20 is configured to rotate the second arm 24 about the fifth axis A5 with respect to the first arm 23. The fifth axis A5 extends in the horizontal direction parallel to the fourth axis A4 (direction perpendicular to the paper surface of FIG. 3).

The sixth rotating portion 21 is configured to rotate the third arm 16 about the sixth axis A6 with respect to the second arm 24. The sixth axis A6 extends in the longitudinal direction of the second arm 24 (direction orthogonal to the fifth axis A5). In addition, this 6th rotation part 21 can be abbreviate | omitted. In this case, the articulated robot 11 has five axes.
The coating liquid application unit 5 according to this embodiment includes a lens support device 25 at a position adjacent to the articulated robot 11.

  The lens support device 25 supports the spectacle lens 4 by adsorbing the lower surface of the spectacle lens 4. The spectacle lens 4 is supported by the lens support device 25 with the lens surface 4a pointing upward. Further, the lens support device 25 is configured to be able to rotate the spectacle lens 4 so that the optical axis 4b is the center as required. The lens support device 25 constitutes a “lens rotating portion” as referred to in the invention of claim 3.

Next, a method for applying the coating liquid 3 to the spectacle lens 4 by the spectacle lens coating liquid coating apparatus 1 according to the present invention will be described with reference to the flowchart shown in FIG.
First, the spectacle lens 4 is supported by the lens support device 25 in the lens support step S1 shown in the flowchart of FIG. The eyeglass lens 4 is supported by a lens transfer mechanism (not shown) in which an operator holds the eyeglass lens 4 by hand and attracts the eyeglass lens 4 to the lens support device 25 or pushes the eyeglass lens 4 upward from the transport tray and holds it. ) Can be used. When the shape of the lens surface 4a is a special shape, the spectacle lens 4 is positioned in the circumferential direction when the spectacle lens 4 is supported by the lens support device 25. As a spectacle lens having a lens surface with a special shape, for example, there is a progressive power lens.

Next, in the shape data setting step S2, the vector data of the normal line L2 for each segmented region is obtained from the shape data obtained by input or measurement. The shape data setting step S2 can be performed before the lens support step S1 is executed.
Then, in nozzle arrangement step S3, as shown in FIG. 5, the spray nozzle 2 is opposed to the target application position 6 on the lens surface 4a in a state where the application liquid 3 is not ejected. At this time, the installation angle of the spray nozzle 2 is set so that the normal L2 passing through the target application position 6 of the lens surface 4a and the center line L1 of the spray ejected from the spray nozzle 2 substantially coincide. In the nozzle arrangement step S3, the distance between the lens surface 4a and the spray nozzle 2 is also set to a predetermined distance. The setting of the installation angle and the interval is performed using the articulated robot 11. The distance between the lens surface 4a and the spray nozzle 2 can be set to about 6 cm to about 10 cm, for example.

  Thus, after the preparation for application is completed, the application step S4 is executed. In the coating step S4, the spray nozzle 2 is moved along the lens surface 4a so that the target application position 6 moves to an uncoated part of the lens surface 4a while spraying the coating liquid 3 from the spray nozzle 2 in the form of a mist. Move. The coating pressure when the spray nozzle 2 ejects the coating liquid 3 can be set to 0.05 to 0.08 Mpa. The movement path during this movement is set using the shape data. For this reason, for example, when the spectacle lens 4 is a progressive addition lens, the spray nozzle 2 moves while moving up and down following the unevenness of the lens surface 4a. The movement of the spray nozzle 2 at this time is also performed by the articulated robot 11.

The application step S4 may be performed while the spectacle lens 4 is stopped on the lens support device 25, or may be performed while the spectacle lens 4 is rotated by the lens support device 25.
When the spectacle lens 4 is stopped and the application step S <b> 4 is performed, the target application position 6 is moved only by the operation of the articulated robot 11. On the other hand, when the application step S <b> 4 is performed while the spectacle lens 4 is rotated by the lens support device 25, the target application position 6 is moved by the operation of the articulated robot 11 and the rotation of the spectacle lens 4.

In order to apply the coating liquid 3 evenly over the entire lens surface 4a with the spectacle lens 4 stopped in step S4, the spray nozzle 2 is moved along the track 26 shown in FIG. 6 or the track 27 shown in FIG. It can be done by moving.
The shape of the track 26 shown in FIG. 6 makes three turns so as to draw a spiral in which the diameter gradually decreases counterclockwise from the movement start point 26a where the spray nozzle 2 is located outside the spectacle lens 4, and then the spectacle lens 4 The shape reaches the principal point 26b after making three turns so as to draw a spiral whose diameter gradually increases in the counterclockwise direction from the center of the center. The end point 26b is the same position as the movement start point 26a. Since the movement start point 26a and the end point 26b are located outside the spectacle lens 4, the spiral portion of the track 26 has a shape such that the spiral swells toward both the points 26a and 26b.

  The shape of the track 27 shown in FIG. 7 is a shape in which the spray nozzle 2 moves from the movement start point 27a in the horizontal direction and the vertical direction to reach the end point 27b. The end point 27b is the same position as the movement start point 27a. The trajectory 27 includes a right moving unit 27c, a first upward moving unit 27d, a first left moving unit 27e, a downward moving unit 27f, a second left moving unit 27g, and a second And an upward movement part 27h. Although these movement parts 27c-27h are mentioned later in detail, all are extended linearly seeing from the direction of the optical axis of the spectacle lens 4. FIG.

  In the rightward moving part 27 c, the spray nozzle 2 moves to the right by a predetermined distance longer than the outer diameter of the spectacle lens 4. In the first upward moving portion 27d, the spray nozzle 2 moves upward in FIG. 7 by a relatively short predetermined distance. In the first leftward moving part 27e, the spray nozzle 2 moves to the left by a predetermined distance longer than the outer diameter of the spectacle lens 4. In the downward movement portion 27f, the spray nozzle 2 moves downward in FIG. 7 by a predetermined distance longer than the outer diameter of the spectacle lens 4. In the second leftward moving part 27g, the spray nozzle 2 moves to the left by a relatively short distance. In the second upward movement portion 27h, the spray nozzle 2 moves upward in FIG. 7 by a distance longer than the outer diameter of the spectacle lens 4. The trajectories 26 and 27 when only the spray nozzle 2 is moved while the spectacle lens 4 is stopped are not limited to the shapes shown in FIGS. 6 and 7 and can be changed as appropriate.

  On the other hand, in order to apply the coating liquid 3 evenly over the entire lens surface 4a while rotating the spectacle lens 4 in step S4, the spectacle lens 4 is rotated at a rotational speed of, for example, about 15 rotations per minute, and the spray nozzle 2 is applied. Can be realized by moving along the track 28 shown in FIG. The shape of the orbit 28 is such that the spray nozzle 2 moves from the movement start point 28a along the outer peripheral portion of the spectacle lens 4 and then rotates once so as to draw a circle in the vicinity of the central portion of the spectacle lens 4. The shape is such that it moves along the outer periphery of the lens 4 and reaches the end point 28b. When the spray nozzle 2 is moved along the track 28 shown in FIG. 8, the rotation direction of the spectacle lens 4 is counterclockwise in FIG. The number of rotations when rotating the spectacle lens 4 is not limited to the above-described 15 rotations per minute, and can be changed as appropriate. Further, the trajectory 28 when the spray nozzle 2 is moved while rotating the spectacle lens 4 is not limited to the shape shown in FIG. 8 and can be changed as appropriate.

In the application step S4, when the target application position 6 changes with the movement of the spray nozzle 2 or the movement of the spectacle lens 4, the installation angle is changed each time. That is, the application step S4 is performed while changing the installation angle so that the normal line L2 passing through the target application position 6 of the lens surface 4a and the center line L1 of the spray ejected from the spray nozzle 2 substantially coincide.
The application step S4 ends after the application liquid 3 is applied over the entire lens surface 4a. The spectacle lens 4 coated with the coating liquid 3 over the entire lens surface 4a is transferred from the lens support device 25 to a transport tray (not shown) and sent to a device (not shown) for curing the coating liquid 3.

  According to the spectacle lens coating liquid coating apparatus 1 configured as described above, the fine particles of the coating liquid 3 sprayed from the spray nozzle 2 and formed into a mist form fly along the normal line L2 of the lens surface 4a. It adheres to the target application position 6 of the lens surface 4a. If the fine particles hit the lens surface 4a at an angle, the fine particles may move on the lens surface 4a after hitting the lens surface 4a or the shape of the coating pattern may change, so that the formed film thickness may change. is there. However, in this embodiment, since the fine particles hit perpendicularly to the target application position 6 on the lens surface 4a, most of the fine particles remain at the target application position 6, and it is considered that a desired application pattern can be formed. .

That is, the amount of the application liquid 3 applied to the target application position 6 can be indirectly measured based on the amount of the application liquid 3 ejected from the spray nozzle 2. This means that the coating liquid 3 can be applied so that the film formed after the coating liquid 3 is cured has a desired thickness.
As described above, by moving the spray nozzle 2 along the lens surface 4a so that the target application position 6 moves to an uncoated part of the lens surface 4a while the coating liquid 3 is ejected from the spray nozzle 2, The fine particles uniformly adhere to the entire surface of the lens surface 4a.

  Therefore, according to this embodiment, the coating liquid 3 (hard coat liquid) layer can be formed so as to be thin and uniform in thickness over the entire lens surface 4a. As a result, according to this spectacle lens coating solution coating apparatus 1, since the hard coat solution is used as the coating solution 3, a hard coat film having a uniform film thickness of, for example, about 1 to 5 μm is applied to the spectacle lens 4. Can be formed. The hard coat film has a uniform film thickness even though the thickness is less than 9.1 μm, so that no interference fringes occur in the spectacle lens 4.

  The coating liquid application unit 5 according to this embodiment is configured using an articulated robot 11 having first and second rotating units 12 and 13 and an arm unit 14. The first rotation unit 12 rotates the spray nozzle 2 around a first axis A1 extending in a direction orthogonal to the spray center line L1 of the coating liquid 3. The second rotating unit 13 rotates the spray nozzle 2 around a second axis A2 orthogonal to the first axis A1. The arm portion 14 supports the spray nozzle 2, the first rotating portion 12, and the second rotating portion 13, and these are in contact with the radial direction of the spectacle lens 4 and the spectacle lens 4. It is moved in the direction of separation.

  According to this embodiment, the coating liquid 3 is applied to the lens surface 4 a using the spray nozzle 2 supported by the articulated robot 11. For this reason, the freedom degree of the movement path | route of the spray nozzle 2 when apply | coating the coating liquid 3 to the lens surface 4a becomes high. Therefore, according to this embodiment, it is possible to apply the coating liquid 3 to a lens surface having a complicated shape such as a lens surface of a progressive power lens so that the thickness of the coating liquid layer is uniform. .

The coating liquid application unit 5 according to this embodiment includes a lens support device 25 (lens rotation unit) that rotates the spectacle lens 4 so that the optical axis 4b is at the center.
Therefore, the eyeglass lens 4 can be rotated to move the target application position 6 to a position facing the spray nozzle 2. Therefore, as compared with the case where only the spray nozzle 2 is moved to apply the coating liquid 3 over the entire lens surface 4a, the time required for coating is shortened and the efficiency of the coating operation is improved.

(Second Embodiment)
The coating liquid application unit of the spectacle lens coating liquid coating apparatus according to the present invention can be configured as shown in FIG. 9, the same or equivalent members as described with reference to FIGS. 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.
The coating liquid application unit 5 shown in FIG. 9 includes first and second rotating units 12 and 13, a distance setting unit 31, a parallel moving unit 32, and a lens rotating unit 33.

  The 1st rotation part 12 rotates the said spray nozzle 2 centering | focusing on 1st axis line A1 of the direction orthogonal to the said spray centerline L1. The second rotating unit 13 rotates the spray nozzle 2 around a second axis A2 orthogonal to the first axis A1.

The interval setting unit 31 supports the spray nozzle 2, the first rotating unit 12, and the second rotating unit 13, and moves them in a direction (vertical direction) that makes contact with and separates from the spectacle lens 4. Is. The interval setting unit 31 is supported by a parallel moving unit 32 described later.
The translation unit 32 is for translating the interval setting unit 31 in the radial direction (horizontal direction) of the spectacle lens 4.

The translation unit 32 according to this embodiment includes a guide rail 35 provided on the ceiling member 34 of the coating liquid coating apparatus 1 and a slider 36 that moves along the guide rail 35. The interval setting unit 31 is supported by the slider 36.
The lens rotating unit 33 rotates the spectacle lens 4 so that the optical axis 4b is the center, and is the same as the lens support device 25 described above.
According to this embodiment, the coating liquid 3 is apply | coated to the whole region of the lens surface 4a by performing the following 1st-4th operation | movement. The first operation is an operation in which the center line L1 of the spray of the coating liquid 3 is substantially coincided with the normal line L2 passing through the target application position 6 of the lens surface 4a by the first and second rotating units 12 and 13. .

The second operation is an operation of changing the interval between the spray nozzle 2 and the lens surface 4 a for each target application position 6 by the interval setting unit 31.
The third operation is an operation in which the translation nozzle 32 translates the spray nozzle 2 in the radial direction of the spectacle lens 4.
The fourth operation is an operation of rotating the spectacle lens 4 by the lens rotating unit 33. That is, in the coating liquid application unit 5, the target application position 6 is moved by the horizontal movement of the spray nozzle 2 by the translation unit 32 and the rotation of the spectacle lens 4 by the lens rotation unit 33.

  Therefore, the spectacle lens coating liquid coating apparatus 1 according to this embodiment is compared with the case where the articulated robot 11 is used to move the spray nozzle 2 so that the coating liquid 3 is applied over the entire lens surface 4a. And the occupied space becomes narrow. As a result, according to this embodiment, a compact spectacle lens coating solution coating apparatus can be provided.

(Third embodiment)
The coating liquid application part of the spectacle lens coating liquid coating apparatus according to the present invention can be configured as shown in FIGS. 10 and 11, the same or equivalent members as those described with reference to FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.

The coating liquid application unit 5 according to this embodiment includes a surface modification processing device 41 as shown in FIG. The surface modification processing apparatus 41 performs surface modification processing on the lens surface 4a so that wettability when the fine particles made of the coating liquid 3 are adhered is increased.
The surface modification processing apparatus 41 according to this embodiment generates a corona discharge 41b in the discharge head 41a in the atmosphere, and irradiates the lens surface 4a (surface to be coated) of the spectacle lens 4 with the discharge electrons.

That is, the surface modification treatment device 41 is configured by a so-called corona discharge treatment device. In addition to the corona discharge treatment apparatus, a plasma treatment apparatus (not shown) can be used as the surface modification treatment apparatus 41.
The surface modification processing device 41 is positioned on the upstream side of the conveyance path for sending the spectacle lens 4 below the spray nozzle 2.

As shown in FIG. 11, in the coating liquid application method in the case of using the surface modification processing apparatus 41 in this way, the modification processing step P1 is performed before the lens support step S1 is performed.
For this reason, in the coating liquid coating apparatus 1 having the surface modification processing device 41, the fine particles of the coating liquid 3 ejected from the spray nozzle 2 and adhered to the lens surface 4a spread out on the lens surface 4a, and the fine particles are separated from each other. The space is filled with the coating liquid 3. Accordingly, it is possible to reliably prevent a portion where the coating liquid 3 is not applied on the lens surface 4a, so that the thickness of the layer of the coating liquid 3 can be further reduced.

(Fourth embodiment)
The spectacle lens coating solution coating apparatus according to the present invention can be configured as shown in FIGS. 12 and 13, members that are the same as or equivalent to those described with reference to FIGS. 1 to 11 are given the same reference numerals, and detailed descriptions thereof are omitted as appropriate.
A spectacle lens coating solution coating apparatus 51 shown in FIG. 12 includes a box-shaped casing 52 in order to prevent the coating solution from scattering. The casing 52 includes a base 53 that supports each device to be described later, and a front wall 55, a left side wall 56, a right side wall 57, a rear wall 58, and a ceiling for forming a coating chamber 54 above the base 53. A wall 59 is provided.

  The front wall 55, the left side wall 56, the right side wall 57, and the rear wall 58 surround the coating chamber 54 from four sides in the horizontal direction, and are formed of a transparent material so that the inside of the coating chamber 54 can be seen from the outside. Has been. The four walls 55 to 58 are formed so as to be able to block ultraviolet rays in order to prevent the coating chamber 54 from being irradiated with ultraviolet rays from the outside. The front wall 55 is provided with a maintenance door 55a that can be opened and closed. The door 55a is also made of a transparent material, and is configured to block the transmission of ultraviolet rays.

  A ventilation device 61 is attached to the ceiling wall 59. The ventilator 61 sucks the air in the coating chamber 54, passes it through a filter (not shown), and discharges it outside the coating chamber 54. A large number of air holes 62 are formed in the base 53 in order to introduce outside air into the coating chamber 54. That is, the air in the coating chamber 54 flows upward from below by operating the ventilation device 61.

  A surface modification processing device 41 that constitutes a part of the coating liquid application unit 5 is disposed outside the left side wall 56. The surface modification processing apparatus 41 is supported on the base 53. The surface modification processing apparatus 41 according to this embodiment performs surface modification processing of the spectacle lens 4 in the case 63, and includes a movable stage 64 for taking the spectacle lens 4 in and out of the case 63. Yes. The movable stage 64 is configured to move the eyeglass lens 4 between the vicinity of the inlet 56 a formed in the left side wall 56 and the inside of the case 63. The surface modification treatment device 41 can be configured by a corona discharge treatment device, a plasma treatment device, or the like.

In the casing 52, the articulated robot 11 and a coating liquid curing device 65 described later are provided so as to be arranged in the horizontal direction. The multi-joint robot 11 constitutes the coating liquid application unit 5 in cooperation with the surface modification processing device 41, and the same one as that shown in the first embodiment is used. The coating liquid ejected from the spray nozzle 2 of the articulated robot 11 is an ultraviolet curable hard coat liquid.
The coating liquid curing device 65 cures the hard coat liquid by irradiating the spectacle lens 4 coated with the ultraviolet curable hard coat liquid with ultraviolet rays. This coating solution curing device is disposed between the articulated robot 11 and the right side wall 57 of the casing 52.

  The casing 52 includes a transport device 71 for sending the spectacle lens 4 to the articulated robot 11 and the coating liquid curing device 65. The transport device 71 is configured to send the tray 72 on which the spectacle lens 4 is placed from the entrance 56 a of the left side wall 56 to the coating liquid curing device 65 through the front of the articulated robot 11. The spectacle lens 4 that has been subjected to the hard coating solution curing process by the coating solution curing device 65 is taken out of the casing 52 through an outlet (not shown) of the right side wall 57 of the casing 52.

  In the eyeglass lens manufacturing method using the coating liquid coating apparatus 51 according to this embodiment, as shown in FIG. 13, the curing step P2 is performed by the coating liquid curing apparatus 65 after the coating step S4. For this reason, in the coating liquid coating apparatus 51 having the coating liquid curing apparatus 65, since the hard coating liquid can be applied and cured in one housing 52, the hard coating without dust or the like is attached. The liquid can be cured. Therefore, according to this embodiment, a hard coat film with higher quality can be formed.

  DESCRIPTION OF SYMBOLS 1 ... Coating liquid application apparatus for spectacle lenses 4, 2 ... Spray nozzle, 4 ... Glasses lens 4, 4a ... Lens surface, 4b ... Optical axis, 5 ... Coating liquid application part, 6 ... Target application position, 11 ... Articulated robot DESCRIPTION OF SYMBOLS 11, 12 ... 1st rotation part, 13 ... 2nd rotation part, 14 ... Arm part, 25 ... Lens support apparatus, 31 ... Space | interval setting part, 33 ... Lens rotation part, 32 ... Parallel movement part, 41 ... Surface modification treatment apparatus 41, 51 ... Coating liquid coating apparatus, 52 ... Case, 65 ... Coating liquid curing apparatus, L1 ... Spray center line, L2 ... Normal, A1 ... First axis, A2 ... Second , S1... Lens support step, S2... Shape data setting step, S3... Lens placement step, S4... Application step, P1.

Claims (5)

Equipped with a coating liquid application unit that sprays the coating liquid from the spray nozzle in the form of a mist to apply to the lens surface of the spectacle lens,
The coating liquid application unit is configured to cause the spray nozzle to face the lens surface so that a center line of the spray ejected from the spray nozzle substantially matches a normal passing through the target application position of the lens surface. Is moved along the lens surface. An eyeglass lens coating solution coating apparatus. In the spectacle lens coating solution coating apparatus according to claim 1,
The coating liquid application unit is configured to rotate about a first axis extending in a direction orthogonal to the spray center line; and
A second rotating section for rotating the spray nozzle about a second axis perpendicular to the first axis;
An articulated joint that supports the spray nozzle, the first rotating portion, and the second rotating portion, and has an arm portion that moves in a radial direction of the spectacle lens and a direction in which the spectacle lens is moved toward and away from the spectacle lens. A spectacle lens coating solution coating apparatus comprising a robot.   3. The spectacle lens coating liquid coating apparatus according to claim 1, wherein the coating liquid coating unit includes a lens rotating unit that rotates the spectacle lens so that an optical axis is at the center. An eyeglass lens coating solution coating apparatus. In the spectacle lens coating solution coating apparatus according to claim 1,
The coating liquid application unit is configured to rotate the spray nozzle about a first axis extending in a direction orthogonal to the spray center line;
A second rotating portion for rotating the spray nozzle about a second axis perpendicular to the first axis;
An interval setting unit that supports the spray nozzle, the first rotation unit, and the second rotation unit, and moves in a direction in which the spray nozzle is in contact with or separated from the spectacle lens;
A translation unit that translates the interval setting unit in the radial direction of the spectacle lens;
A spectacle lens coating liquid coating apparatus comprising: a lens rotating unit that rotates the spectacle lens so that an optical axis is at the center.   5. The spectacle lens coating liquid coating apparatus according to claim 1, wherein the coating liquid coating unit has high wettability when fine particles of the coating liquid are attached. A spectacle lens coating liquid coating apparatus comprising a surface modification processing apparatus for performing a surface modification process on a lens surface.

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