JPH0780371A - Coating device for lens edge face - Google Patents

Abstract

PURPOSE:To maintain a function to apply a coating material having light shieldability to lens edge faces over a long period of time. CONSTITUTION:This coating device is provided with a means for holding and rotationally driving the lens 1 and a coating roller 2 for coating the part to be coated of the lens 1 with the coating material 7. The central part of the coating roller 2 is provided with a storage part 3 for temporarily storing the coating material 7 and is provided with many coating material flow holes 5 for communicating the storage part 3 of the coating roller 2 with an outer peripheral part 4 of the coating roller 2. The storage part 3 is provided with a means 6 for supplying the coating material 7. The coating roller 2 is rotated to bring the outer peripheral part 4 of the coating roller 2 and the part to be coated of the lens 1 into contact or proximity with each other. The coating material 7 temporarily stored in the storage part 7 is supplied through the many coating material flow holes 5 or grooves or spacings by centrifugal force, capillarity, etc., to the coating part of the outer peripheral part of the coating roller 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating device for a lens or prism having two or more edge surfaces, and more particularly to a coating device for a lens edge surface for painting ink or paint on the edge surface of the lens.

[0002]

2. Description of the Related Art Conventionally, when ink or black paint is applied to a lens edge surface to have a light concealing ability, a skilled person must manually perform it with a brush, a brush or a brush.

Further, as described in Japanese Patent Publication No. 61-30632, a coating roller is rotated in an ink tank to deposit ink or black paint on the peripheral surface, and the peripheral surface is brought into contact with the lens edge surface. Then, the paint on the peripheral surface was transferred to the lens edge surface. Further, as described in JP-A-59-90668, a groove having a wave-shaped cross section is provided on the peripheral surface of the coating roller, and ink or black paint is attached to the groove to transfer the paint to the lens edge surface. I was letting it.

[0004]

However, not only is the work efficiency of the manual coating work poor, but it is not possible to coat the edge and end faces of the lens uniformly and satisfactorily, and the polishing surface (lens surface) There is a problem that the paint wraps around and many defective products are produced, and a high degree of skill is required to eliminate the occurrence of these defective products.

Further, in the method of transferring the coating material by bringing the peripheral surface of the coating roller into contact with the lens edge surface, the coating material is not evenly distributed on the peripheral surface of the coating roller, and accordingly, the coating material transferred to the lens edge surface. There was a problem in that the thickness of the film varied. Furthermore, in order to eliminate the above-mentioned variation, the coating roller is provided with a groove portion having a corrugated cross section, and ink or black paint is adhered to the groove portion to transfer the paint to the lens edge surface. There is a problem that it requires time and that only a specific expert can make a paint roller. In addition, the groove with a wavy cross section
Due to contact with the lens edge surface, the groove portion having a corrugated cross section is worn, and the function of transferring ink to the lens edge surface by adhering ink or black paint to the groove portion has been a problem.

The present invention has been made in view of the above-mentioned problems of the prior art. The coating roller has a structure having a plurality of holes and a plurality of grooves leading from the inside to the peripheral surface thereof, and has durability as a coating roller. An object of the present invention is to provide a coating device for a lens edge surface, which can improve the function of uniformly transferring the paint to the lens edge surface for a long period of time.

[0007]

FIG. 1 is a conceptual diagram of the present invention.
It shows in (A) and FIG. 1 (B). The lens edge coating apparatus of the present invention is provided with a means for holding and rotating the lens 1, and a coating roller 2 for coating the coating portion of the lens 1 with the coating material 7. At the center of the coating roller 2, a storage section 3 for temporarily storing the coating material 7 is provided, and a large number of coating material circulation holes 5 that connect the storage section 3 of the coating roller 2 and the outer peripheral portion 4 of the coating roller 2 are provided. A means 6 for supplying the paint 7 to the storage 3 is provided. Reference numeral 8 is a paint receiving member. In addition, the paint roller is configured by combining multiple narrow width paint rollers, and a large number of grooves and gaps are formed between the narrow width paint roller and the narrow width paint roller through the storage section and the outer periphery of the paint roller. May be.

[0008]

According to the above construction, when the coating material 7 is applied to the lens 1, the coating roller 1 is rotated so that the outer peripheral portion 4 of the coating roller 1 and the portion to be coated of the lens 1 come into contact with or come close to each other. When the coating roller is rotated, the coating material 7 temporarily stored in the storage portion 7 is supplied to the coating portion on the outer peripheral portion of the coating roller 2 through a large number of coating material circulation holes 5 or grooves or gaps due to centrifugal force, a capillary phenomenon, or the like. To be done.

[0009]

Embodiment 1 FIGS. 2 to 6 show Embodiment 1 of a lens edge coating apparatus according to the present invention, FIG. 1 is a perspective view showing the entire coating apparatus, and FIG. 3 is a lens suction rotation unit of the coating apparatus. 6 is a partially cutaway front view, FIG. 4 is a partially cutaway front view of the coating roller unit of the coating apparatus, and FIG. 5 is a partially cutaway perspective view of the coating roller unit of the coating roller unit. FIG. 4 is a perspective view showing a mounting shaft of a coating roller.

The lens edge coating apparatus of this embodiment is shown in FIG.
As shown in FIG.
Lens centering unit 12, lens suction rotation unit 1
3, a coating roller unit 14, an operation box 15 and the like. The configuration of each unit will be specifically described below.

The transport unit 11 for the coated lens 10 is
A holding table 1 for movably holding an X, Y, Z robot 16 and a pallet 18 on which the coated lens 10 supplied from a supply unit 17 of the coated lens 10 is placed.
9 and a transfer conveyor 20 for transferring the pallet 18 moved and transferred via the holding table 19 to the next step.
And is provided on the gantry 28.

The X, Y, Z robot 16 guides the movable table 21 (Y-axis table) having a length close to the vertical width of the coating apparatus shown in FIG. Support table to support (X-axis table)
22 and Y between the moving table 21 in the longitudinal direction.
It is composed of two upper and lower cylinders (Z axis) 24a and 24b which are attached to a movable table 23 which is mounted so as to be movable in the axial direction and which holds the lens 10 to be coated placed on the pallet 18.

The lens centering unit 12 is a lens 10 to be coated which is held by the lens suction rotation unit 13.
It is composed of a pair of upper and lower centering jigs 25 for centering, and a cylinder 26 for moving the centering jigs 25 in the X-axis direction. The lens centering unit 12 is installed on an XY table 27, and the XY table 27 is mounted on a pedestal 28 below a side surface of the holding table 19,
The X-axis cylinder 29 and the Y-axis cylinder (not shown) are movable in the X and Y directions.

The lens suction rotation unit 13 is shown in FIG.
As shown in FIG. 3, a rotary shaft 31 provided with a suction portion 30 of the coated lens 10, a support base 32 of the rotary shaft 31,
It is composed of a vacuum generator 33, a rotation speed variable motor 34, etc.
It is installed on the table 27.

The rotary shaft 31 is mounted on a support base 32 which is erected on the upper surface of the XY table 27.
It is rotatably held via 5. A suction hole 36 is formed through the axis of the rotary shaft 31, and the suction portion 30 of the lens 10 to be coated has a through hole 30a communicating with the suction hole 36 at the center thereof at its tip 31a. Is attached. This suction part 30 is
It is made of a soft material such as a synthetic resin so that the lens 10 to be adhered to the lens will not be scratched.

A rotary joint 37 is attached to the rear end portion 31b of the rotary shaft 31, and the vacuum generator 33 is connected to the suction hole 36 via a connecting tube 38 connected to the rotary joint 37. The tip of the suction portion 30 can suck the lens 10 to be coated through the connecting tube 38, the rotation joint 37, the suction hole 36, and the through hole 30a.

Further, the rear end portion 3 of the rotary shaft 31.
A pulley 39 is fixed to 1b, and a timing belt 42 stretched between the pulley 39 and a pulley 41 attached to a rotation shaft 40 of the rotation speed variable motor 34 arranged on the upper surface of the XY table 27. Through both pulleys 3
By connecting 9 and 41, the rotating shaft 31
Is configured to be variable in rotation speed by the rotation speed variable motor 34.

Next, the coating roller unit 14 of the coated lens 10 will be described. As shown in FIG.
A support base 45 is erected on the upper surface of 8, and a rotary shaft 47 is rotatably mounted on the support base 45 via a rotary bearing 46. The shaft tip portion 47 of the rotating shaft 47
The roller mounting portion 48 is provided in a, and the coating roller 4
9 is attached to the rotation shaft 47 by connecting the rotation shaft attachment member 50 of the coating roller 49 and the roller attachment portion 48. Further, a mounting shaft 51 is attached to the coating roller 49, and a paint supply device 53 is connected via a rotary joint 59 attached to the mount shaft 51 and a connecting tube 52 connected to the rotary joint 59. .

The rear end portion 47 of the rotary shaft 47 is also provided.
A pulley 54 is fixed to b and a timing belt 58 stretched between the pulley 54 and a pulley 57 attached to a rotary shaft 56 of a rotation speed variable motor 55 arranged on the back side of the gantry 28 is interposed between the two. By connecting the pulleys 54 and 57, the rotation shaft 47 can be driven by the rotation speed variable motor 58 so that the rotation speed can be changed.

Next, the coating roller 49 will be described with reference to FIGS. A paint storage chamber 60 is provided inside the coating roller 49, and a plurality of holes 61 are formed to connect the paint storage chamber 60 and the outer peripheral surface (coating portion) 49 a of the coating roller 49. The plurality of holes 61 are
A plurality of random openings are made toward the center of rotation of the coating roller 49. The rotary shaft mounting member 50 is provided at the center of one side surface of the coating roller 49. Also,
On the other side surface, the mounting member 51 is supported by the rotation supporting member 62, and the tip of the mounting member 51 is attached to the paint storage chamber 60.
It is installed so as to be placed inside.

As shown in FIG. 6, the mounting member 51 has a paint circulating hole 63 formed in the axial center thereof, and the paint storing chamber 6 is
A paint supply hole 64 that communicates with the paint circulation hole 63 is provided at the tip end portion disposed inside 0. On the other hand, the paint supply device 53 connected to the paint circulation hole 63 via the rotary joint 59 and the connection tube 52 is connected to the rear end of the mounting member 51. This allows the paint supply device 53 to be connected to the connecting tube 52 and the rotary joint 5.
9, the paint is supplied into the paint storage chamber 60 through the paint circulation hole 63 and the paint supply hole 64, and passes through a plurality of holes 61 formed in the paint roller 49, and the coating portion (outer peripheral surface) of the coating roller 49. Paint is supplied to 49a

The operation box 15 is provided with the transport unit 11, the supply unit 17 for the lens 10 to be coated, and the operation keys for each unit. A controller (not shown) is built in the gantry 21. For safety, a cover 65 is erected on the outer circumference of the coating device.

The coating device for the lens edge surface of this embodiment has the above-mentioned structure, and a method for applying the coating material to the lens 10 to be coated will be described below. When the operation start signal is input to the supply unit 17 of the lens 10 to be coated by the operation start of the coating device via the operation box 15, the lens 10 to be coated is transported to the lens suction rotation unit 13 by the transport unit 11. And the coated lens 1
0 is adsorbed and held by the adsorbing portion 30, the lens centering unit 12 is moved forward, the coated lens 10 is sandwiched by the centering jig 25, and the centering is performed by the lens centering unit 12 and the lens adsorbing and rotating unit 13. The action is taken.

After the centering operation is completed, the lens centering unit 12 returns to the original position by the operation reverse to the above. In association with the returning operation of the lens centering unit 12, the XY table 27 located at the lens transfer position between the lens suction rotation unit 13 and the transport unit 11 is actuated to move the lens suction rotation unit 13 to the coating roller. The unit 14 moves to the coating position.

When the centering work by the lens centering unit 12 is completed, the rotation speed variable motor 34 is operated to rotate the rotating shaft 31 and the lens 10 to be coated.
Is prepared for coating work by the coating roller unit 14.

On the other hand, the ink or black paint is sent to the rotary joint 59 via the tube 52 by the paint supply device 53. Then, it is sent to the paint storage chamber 60 provided on the coating roller 49 through the mounting shaft 51. The paint stored in the paint storage chamber 60 passes through a plurality of holes 61 formed in the paint roller 49 rotated by the rotation speed variable motor 55, and gravity, capillary action, centrifugal force, etc. are applied to the paint part 49a of the paint roller 49. Supplied by

The coating portion 49a of the coating roller 49 comes into contact with the edge surface portion of the lens 10 to be coated, which is conveyed by the movement of the XY table 27, and coating is performed. In the coating portion of the coating roller 49, the plurality of holes 61 are worn due to contact with the edge surface portion of the lens 10 to be coated 49a.
Since the plurality of holes 61 provided in No. 1 are randomly opened toward the rotation center of the coating roller 49, the function of retaining ink or black paint and transferring the paint to the edge surface of the coated lens is lost. There is no. The inner diameter of the plurality of holes 61 is preferably about 0.1 to 1 mm. The material of the coating roller 49 is brass, stainless steel, resin, etc.
The material is selected according to the material of the lens 10 to be painted.

[0028]

[Embodiment 2] FIG. 7 to FIG. 11 show essential parts in Embodiment 2 of a lens edge coating apparatus according to the present invention, FIG. 7 is a front view showing a coating roller, and FIG. 8 is a left side surface showing a coating roller. FIG. 9 is a perspective view showing the mounting shaft of the coating roller, FIG.
0 is a front view showing the mounting shaft in an upper half section, and FIG. 11 is a perspective view showing a spacer. The coating apparatus of this embodiment is
The structure is the same as that of the first embodiment except for the coating roller.

The coating roller 70 in the coating apparatus of this embodiment is provided with a plurality of coating rollers each having a small width, and is composed of a spacer or the like which forms a required space between the coating rollers having a small width. In FIG. Coating roller 70a, coating roller 70b, coating roller 70c, coating roller 70d, coating roller 70e,
A spacer 71a, a spacer 71b, and a spacer 71 which are respectively interposed between the coating rollers 70a to 70e.
c, a spacer 71d, a coating roller 70, a rotary shaft mounting member 72 sandwiching the spacer 71, and a mounting shaft 73.

The rotary shaft mounting member 72 is connected to the roller mounting portion 48 of the rotary shaft 47 of the coating roller unit 14 as in the first embodiment shown in FIG. Further, the rotary joint 59 is attached to the attachment shaft 73, and
Similarly, through the rotary joint 59 and the connecting tube 52, the paint supply device 53 is connected to the paint circulating hole 74 formed in the shaft center of the mounting shaft 73.

Most of the mounting shaft 73 is inserted and arranged at the center of the coating rollers 70a to 70e and the spacers 71a to 71d. As shown in FIG. 9, a paint storage portion 75 having a diameter larger than that of the paint distribution hole 74 is formed inside the mounting shaft 73. The paint storage portion 75 and the outer peripheral surface of the mounting shaft 73 are formed on the mounting shaft 73. Long hole 76 for communicating paint
The coating rollers 70a to 7a along the axis of the mounting shaft 73.
0e and a plurality of spacers 71a to 71d are provided at the positions where they are inserted.

Inside each of the spacers 71a to 71d,
A plurality of paint supply holes 77 opened from the central portion to the outer peripheral surface are radially formed. Also, the coating roller 70a-
Spacers 71a to 71d that determine the space of 70e
The thickness of the spacers 1a to 71d is preferably about 0.1 to 1 mm, and the thickness of the spacers 1a to 71d is determined by the amount of paint required for coating the lens 10 to be coated.

Next, the method and operation of applying the coating material on the coated lens 10 will be described. The paint is stored in the paint storage unit 75 provided in the mounting shaft 73 via the connecting tube 52 by the paint supply device 53, the paint is supplied from the long hole 76 for supplying the paint, and the spacers 71a to 71d are provided with the paint. Paint roller 70a and paint roller 7 passing through paint supply hole 77
0b, coating roller 70b and coating roller 70c, coating roller 70c and coating roller 70d, coating roller 7
0d and the coating roller 70e, through the spaces secured by the spacers 71a, 71b, 71c, and 71d, respectively, and are supplied to the coating portion (outer peripheral portion) of the coating roller 70. Other methods and actions are the same as those in the first embodiment.

According to the present embodiment, the coating portion of the coating roller 70 is worn by contact with the edge surface portion of the lens to be coated, but ink or black paint is attached in the space secured by the coating roller 70 and the spacer 71. The function of transferring the paint to the lens edge surface is not lost. The space width is preferably about 0.1 to 1 mm. The material of the coating roller is brass, stainless steel, resin, etc., and the material is selected according to the material of the lens to be coated.

[0035]

[Embodiment 3] FIGS. 12 to 116 show the essential parts of Embodiment 3 of the lens edge coating apparatus according to the present invention.
Is a front view showing the coating roller, FIG. 13 is a left side view showing the coating roller, FIG. 14 is a front view showing a small width coating roller constituting the coating roller, and FIG. 15 is a perspective view showing a mounting shaft of the coating roller. FIG. 16 is a front view showing the mounting shaft in an upper half section. The coating apparatus of this embodiment has the same configuration as that of the first and second embodiments except for the coating roller.

The coating roller 80 in the coating apparatus of the present embodiment is provided with a plurality of coating rollers formed in a small width.
In FIG. 12, a coating roller 80a, a coating roller 80b, a coating roller 80c, a coating roller 80d,
The rotary shaft mounting member 82 and the mounting shaft 83 sandwich the coating rollers 80a to 80d.

Coating rollers 80a, 80b, 80c, 8
As shown in FIG. 14, 0d is formed in the shape of a disc whose side surface is corrugated. These coating rollers 80a, 80b, 8
0c and 80d are shown in FIG.
As shown in FIG. 2, it is formed by sandwiching the corrugated peaks and peaks and troughs from both sides with the rotary shaft mounting member 82 and the mounting shaft 83. This coating roller 80a,
The waveforms 80b, 80c, and 80d are determined by the amount of paint required to coat the lens 10 to be coated.

Most of the mounting shaft 83 is inserted in the central portion of the coating rollers 80a-80d. As shown in FIG. 16, a paint storage portion 85 having a diameter larger than that of the paint distribution hole 84 is formed in the mounting shaft 83, and the paint storage portion 85 and the outer peripheral surface of the mounting shaft 83 are formed. A plurality of paint supply holes 86 communicating with and are provided along the axial center of the mounting shaft 83 at positions inserted into the coating rollers 80a to 80d.

The rotary shaft mounting member 82 is connected to the roller mounting portion 48 of the rotary shaft 47 of the coating roller unit 14 as in the first embodiment shown in FIG. Further, the rotary joint 59 is attached to the attachment shaft 83, and
Similarly to the above, the paint supply device 53 is connected to the paint distribution hole 84 formed in the shaft center of the mounting shaft 83 via the rotary joint 59 and the connection tube 52.

Next, the method and operation of applying the coating material on the coated lens 10 will be described. The paint is stored by the paint supply device 53 via the connecting tube 52 in the paint storage section 85 provided in the mounting shaft 83, and the paint is supplied from the paint supply hole 86, and the paint roller 80a, the paint roller 80b, and the paint roller are supplied. 80b, coating roller 80c, coating roller 80
The coating portion (outer peripheral portion) of the coating roller 80 passes through the space secured by the corrugation between c and the coating roller 80d.
Is supplied to. Other methods and actions The same as in the above-described first and second embodiments.

According to the present embodiment, the coating portion of the coating roller 80 is worn due to contact with the edge surface portion of the lens to be coated. However, in the space secured between the corrugated coating roller and the corrugated coating roller Alternatively, the function of attaching the black paint and transferring it to the lens edge surface is not lost. The space width is preferably about 0.1 to 1 mm. The material of the coating roller is selected according to the material of the lens coated with brass, stainless steel, resin, etc.

[0042]

As described above, according to the lens edge coating apparatus of the present invention, the function of reliably transferring the coating material to the lens edge surface can be ensured for a long period of time, and the structure becomes simple. The maintenance of can be simplified.

[Brief description of drawings]

FIG. 1 is a front view and a side view conceptually showing a lens edge coating device of the present invention.

FIG. 2 is a perspective view showing the entire apparatus according to the first embodiment of the present invention.

FIG. 3 is a front view showing the lens suction / rotation unit according to the first embodiment of the present invention with a part cut away.

FIG. 4 is a front view showing the coating roller unit of Example 1 of the present invention with a part thereof cut away.

FIG. 5 is a perspective view showing a partially cutaway coating roller of the coating roller unit according to the first embodiment of the present invention.

FIG. 6 is a perspective view showing a mounting shaft of the coating roller according to the first embodiment of the present invention.

FIG. 7 is a front view showing a coating roller of Example 2 of the present invention.

FIG. 8 is a left side view showing a coating roller according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing a mounting shaft of a coating roller according to a second embodiment of the present invention.

FIG. 10 is a front view showing the mounting shaft of the coating roller of Embodiment 2 of the present invention in an upper half section.

FIG. 11 is a perspective view showing a spacer according to a second embodiment of the present invention.

FIG. 12 is a front view showing a coating roller of Example 3 of the present invention.

FIG. 13 is a left side view showing a coating roller of Example 3 of the present invention.

FIG. 14 is a front view showing a single narrow coating roller that constitutes a coating roller of Example 3 of the present invention.

FIG. 15 is a perspective view showing a mounting shaft of a coating roller of Embodiment 3 of the present invention.

FIG. 16 is a front view showing an upper half sectional view of a mounting shaft of a coating roller of Example 3 of the present invention.

[Explanation of symbols]

 1 Lens 2 Coating Roller 3 Storage Section 4 Lens Outer Part 5 Paint Distribution Hole 6 Paint Supply Means 7 Paint

Claims (2)

[Claims] 1. A means for holding and rotating a lens, a coating means provided with a coating roller for coating a portion of a lens to be coated with a paint on an outer peripheral portion, and a control for controlling the rotation driving means, the coating means and the like. In the device for coating the lens edge surface, which comprises a means, a storage portion for temporarily storing the coating material is provided in the central portion of the coating roller, and a large number of coating materials communicating the storage portion of the coating roller and the outer peripheral portion of the coating roller. A lens edge coating device, characterized in that it has means for supplying paint to the storage part of the coating roller while providing a flow hole. 2. A means for holding and rotating the lens, a coating means provided with a coating roller for coating a portion of the lens to be coated with paint at the outer peripheral portion, and a control for controlling the rotation driving means, the coating means and the like. In the device for coating the lens edge surface, which comprises means, a storage section for temporarily storing the coating is provided in the central portion of the coating roller, and a large number of coating flow grooves connecting the storing section of the coating roller and the outer peripheral portion of the coating roller. And a means for supplying the coating material to the storage part of the coating roller, the coating device for the lens edge surface.