JPH06142577A - Appricator of coating material for lens - Google Patents

Abstract

PURPOSE:To achieve the stability and uniformity in coating thickness, to improve quality, and to obviate the need for a skilled worker. CONSTITUTION:An applicator is equipped with a holding means 10 for holding a lens L and application means 14 for applying a coating material T supplied to a supply means 12, which supplies the coating material T for the lens L, on a desired place of the lens L.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens coating material coating device for coating a lens with a coating material such as black ink.

[0002]

2. Description of the Related Art For example, an optical lens holds its spherical surface on a vacuum chuck. Then, while rotating the lens by rotating the chuck, black ink is manually applied to the outer peripheral portion of the lens with a brush or a brush.

[0003]

However, in such a manual brush or brush coating, the coating thickness is not stable and the quality varies. Also, in the coating work,
It is practically impossible to control the coating thickness of several μm. Moreover, since the coating work requires skill, it is difficult to coat the lens efficiently. The present invention has been made to solve the above problems, and can stabilize and uniformize the coating thickness, improve quality, and provide a lens coating material that does not require the skill of an operator. It is intended to provide a coating device.

[0004]

According to the present invention, there is provided a holding means for holding a lens, a supplying means for supplying a coating material for the lens, and the supplied coating material for a required portion of the lens. This is achieved by a lens coating material coating device including a coating means for coating.

The coating means is preferably at least 1
Have two rolls. Further, the lens held by the holding means is preferably rotated while being biased against the roll to apply the coating material.

The supply means preferably has a blade, which sets the amount of coating material for the roll. The holding means preferably comprises centering means for centering the lens.

[0007]

The coating material is supplied to the coating means by the feeding means, and the coating material is coated on the predetermined portion of the lens by the coating means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In addition, it states below. Since the examples are preferred specific examples of the present invention, various technically preferable limitations are attached thereto, but the scope of the present invention does not particularly limit the present invention in the following description. As long as it is not limited to these embodiments.

FIG. 1 shows a preferred embodiment of a coating material coating device for lenses according to the present invention. The lens coating material coating device includes a lens holding unit 10, a supply unit 12, and a coating unit 14. First, the lens holding means 10
Will be described. The lens L is the lens holding means 1
It is designed to be held between zero clamps 22 and 26. As shown in FIG. 2, the clamps 22 and 26 have such a shape that they can be in close contact with the spherical surface of the lens L. In the embodiment, the lens L has a configuration in which a spherical lens and an aspherical lens are bonded and combined.

In this case, the lens L can be centered or centered by the lens guide 24. That is, the lens guide 24 is movable in the direction of the arrow Y, and when performing lens alignment, the lens guide 24 is moved to the right in FIG. You can match. The clamp 22 is connected to the elbow 20 via the tube 21. This elbow 20, as shown in FIG.
It is connected to the vacuum device 200. By operating the vacuum device 200, the lens L can be sucked to the clamp 22 side via the tube 21 and the elbow 20. With the lens L thus attracted to the clamp 22, the clamp 26 is moved to the left side in FIG. 2 to bring the support surface of the clamp 26 into close contact with the spherical surface of the lens L, so that the lens L is clamped by the clamps 22 and 26. It can be held securely.

The clamp 26 is the stroke bearing 2
As described above, it is possible to move in the direction of the arrow Y in FIG. The shaft 27 of the clamp 26 is biased by a spring 30, and the biasing force of the spring 30 pushes the clamp 26 against the lens L. Clamp 22
Are fixed to the sub-slide 31 via fixing means 32. On the other hand, the stroke bearing 28 is fixed to the table 36 via the fixing means 34. The table 36 is movable in the arrow Y direction with respect to the sub slide 31 by expanding and contracting the cylinder 38. Sub slide 31
Is movable in the direction of arrow X with respect to the base 40. One end of a member 48 is fixed to the sub slide 31.
One end of a spring 50 is attached to the other end of the member 48. The other end of the spring 50 is attached to the pin 51.

The pin 51 is fixed to the base slide 42. A spring measure 52 is attached to the other end of the member 48. The sub-slide 31 is adapted to move in the arrow X direction against the biasing force of the spring 50. The force required for the movement at this time can be measured by the spring gauge 52. The base slide 42 has an arrow X with respect to the support portion 44.
It can move in any direction. The nut 54 is fixed.
The nut 54 is engaged with the ball screw 60. One end of the ball screw 60 is supported by the support portion 58, and the other end of the ball screw 60 is supported by the support portion 56. The ball screw can be rotated by rotating the handle 62, and the base slide 42 integrated with the member 54 can be moved in the arrow X direction by the rotation of the ball screw 60. The support portions 58 and 56 are fixed to the base portion 46. Further, the stopper 47 is fixed to the base portion 46. The stopper 47 defines the movement limit of the base slide 42.

Next, the supply means 12 will be described. The micro head 100 is in contact with the upper end 104 of the blade 110. The contact of the dial gauge 102 is in contact with the member 111 of the blade 110. Roller guides 106 and 108 are fixed to the blade 110. The tip of the blade 110 is formed to be oblique.
The blade 110 can be moved back and forth in the arrow Z direction by operating the micro head 100. Roller guide 1
Reference numerals 06 and 108 sandwich both side surfaces of the roll 94 described later. In this supply means 12, the blade 1
A supply space 113 is formed between the upper surface of 10 and the roller guides 106 and 108. The coating material is put in the supply pot 113, and the coating material is supplied from the supply pot 113 to the next steel roll 94.

As this coating material, for example, so-called UV ink of UV curing type, black ink such as optical ink, or other coating material can be applied. Next, the coating means 14 will be described. A gear 84 is connected to the output shaft of the motor 80 via a coupling 82. A transfer roll 88 also called a rubber roll is attached to a shaft 86 connected to the gear 84.
Are connected. Meanwhile, the gear 90 meshes with the gear 84. The shaft of the gear 90 is connected to the shaft 9 via the coupling 92.
It is connected to 6. The shaft 94 has the roll 94 already mentioned.
Are connected. The diameter of the steel roll 94 is preferably smaller than that of the transfer roll 88.

It is preferable that at least the outer peripheral surface of the transfer roll 88 is made of an elastic material so that the coating material T can be easily applied to the outer periphery or the peripheral surface of the lens L as described later. The transfer roll 88 is, for example, a rubber roll. On the other hand, the other roll 94 may be a steel roll or a rubber roll. When the motor 80 rotates, the transfer roll 88 rotates in the arrow R direction, and the roll 94
Rotates in the opposite arrow S direction.

Next, an example of the operation of the above-described lens coating material coating device will be described in detail. First, the blade 110 of FIG.
The coating material T is put into the coating material supply pot 113 which is also called a space. This blade 1
10 diagonally downwardly along the arrow Z, the blade 10
6, 108 and the tip of the blade 110 are brought close to the roll 94.

By rotating the motor 80, the coating material is transferred from the peripheral surface of the roll 94 to the peripheral surface of the transfer roll 88. The supply amount of the coating material at this time is adjusted by adjusting the size of the gap between the blade 110 and the roll 94. That is, the position of the blade 110 is controlled by the micro head 100. At this time, the amount of the gap between the blade 110 and the roll 94 is confirmed by the dial gauge 102.

Further, by using a motor capable of speed control as the motor 80, the roll 94
The rotation speed of can be changed. The lens L has already been clamped between the clamps 22 and 26, and is centered by the lens guide 24. The holding force of the lens L at this time can be adjusted by the bending amount of the spring 30.

To apply the coating material T to the outer peripheral surface of the lens L, an operator rotates the handle 62 to move the base slide 42 to the transfer roll 88 side. That is, as the ball screw 60 rotates, the base slide 42 is advanced until it is stopped by the stopper 47. The pressing force when the lens L contacts the transfer roll 88 is adjusted by the spring 50. The urging force of the spring 50 can be set by checking the numerical value with the spring meter 52.

With respect to the excessive movement of the base slide 42 at this time, the sub-slide 31 can move in the direction of the arrow X with respect to the base 40 in the direction away from the transfer roll 88. As a result, it is possible to prevent the lens L from being disengaged from the clamps 22 and 26, or the pressing force that presses the lens L against the transfer roll 88 from becoming excessive. With respect to the coating thickness, it is possible to control the coating thickness by investigating related data on the gap amount between the blade 110 and the roll 94 in advance.

By using UV black ink, it is possible to perform UV irradiation after the black ink painting while rotating the clamp shafts 27 and 25 while the lens L is clamped to the clamps 22 and 26. Depending on the location, the outer peripheral surface of the lens L can be blackened or a coating material can be applied and dried. By adjusting the distance between the blade 110 and the roll 94, the supply amount can be adjusted to prevent the coating thickness from varying. The roll 94 to the transfer roll 88
Since the coating material T is transferred to the above, the thickness of the coating material T on the outer peripheral surface of the transfer roll 88 can be made uniform as a whole at this time as well. Further, the blade 110 is brought close to the roll 94 to reduce the thickness of the coating material T, so that sagging cannot be performed. The uneven coating of the coating material is caused by the number of rotations of the roll 94 and the transfer roll 88 and the lens L.
It can be adjusted by the pressing force of the transfer roll 88.

The present invention is not limited to the above embodiment. For example, an automatic device for supplying the lens L can be added to the lens holding means 10. This makes it possible to automate the supply of the lens L. Alternatively, the roll 94 in FIG. 1 may be omitted, and the coating material may be directly supplied from the blade 110 side to the transfer roll 88. Further, instead of the handle 62, a motor may be attached to automatically move the base slide 42 in the arrow X direction. Further, even if there is a diameter difference or a step on the outer circumference of the lens, it can be dealt with by providing a step on the transfer roll, for example.

[0023]

As described above, according to the present invention, it is possible to mechanize a coating operation for a lens which has been conventionally performed manually, and to stabilize and uniformize a coating thickness. This can improve quality. Further, the coating thickness on the lens can be set arbitrarily. Moreover, the skill of the operator is not required.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a preferred embodiment of a lens coating material coating apparatus according to the present invention.

FIG. 2 is a view showing a lens holding means of the embodiment shown in FIG.

[Explanation of symbols]

 10 Lens Holding Means 12 Supplying Means 14 Coating Means L Lenses 22, 26 Clamps 42 Base Slides 80 Motors 88 Transfer Rolls 94 Rolls 110 Blades 113 Coating Material Supply Pots

Claims (5)

[Claims] 1. A lens comprising: a holding means for holding the lens; a supplying means for supplying a coating material for the lens; and an applying means for applying the supplied coating material to a required portion of the lens. Coating material coating device. 2. The lens coating material coating device apparatus according to claim 1, wherein the coating means has at least one roll. 3. The lens coating material according to claim 2, wherein the lens held by the holding means is configured to rotate while being biased against the roll to apply the coating material. Coating device. 4. The lens coating material coating apparatus according to claim 2, wherein the supply unit has a blade, and the blade sets the amount of the coating material with respect to the roll. 5. The lens coating material coating apparatus according to claim 1, wherein the holding unit includes a centering unit for centering the lens.