JPH0567379B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a lens pasting method and a pasting device for pasting a lens (lens material) as a workpiece onto a pasting plate used in a lens polishing device. Regarding.

[Prior Art] As is known, a lens polishing device includes a pasting plate for pasting a lens as a workpiece, and a polishing dish (grindstone) for grinding and polishing the lens pasted on the pasting plate. , consists of an upper shaft (kanzashi rod) for pressurizing the lens against the polishing plate, and a swinging mechanism for swinging the upper shaft side or the polishing plate side (lower shaft side). This technique is commonly used in Japanese Patent Application Laid-Open Nos. 192742-1982 and 1988-192742.
It is disclosed in Publication No. 196158.

When grinding and polishing a lens using such a polishing device, it is necessary to affix the lens, which is the workpiece, to a affixing plate. Conventionally, this affixing method is shown in FIGS. 11a and 11b. That's what he was doing.

That is, first, the heat-melting adhesive patch 3 is supplied to the spherical surface of the lens 1, which is the workpiece, and/or to the application surface 2a of the lens application plate 2. Next, the lens 1 is attached to the attachment surface 2 of the lens attachment plate 2 in an atmosphere in which the adhesive patch 3 is dissolved.
a with a constant pressing force to affix the lens 1 to the affixing plate 2. At the time of this pressing, the patch 3 is spread from the center to the periphery of the patch surface 2a, and the patch 3
is diffused over substantially the entire surface of the lens 1 and the application surface 2a, and the excess patch 3 protrudes from the application surface 2a to the outer periphery. Next, a centering operation is performed via the centering chuck 4, followed by cooling.

According to the above lens attachment method, the lens 1 can be attached to the attachment plate 2 in a centered state, as shown in FIG. 11b.

[Problems to be Solved by the Invention] However, the above-mentioned conventional technology has the following problems.

That is, in the above conventional application method, when pressing the lens 1 onto the application surface 2a, excess patch 3 inevitably protrudes onto the outer periphery of the application plate 2 and the lens 1. There was a problem in that the protruding patch 3 adhered to the centering surface (clamping surface) of the centering chuck 4 during centering. Therefore, even if the centering work is carried out diligently, there will be eccentricity of the adhesive patch corresponding to the thickness of the adhesive patch 3 adhered to the centering operation surface, and due to this eccentricity, there will be defects in the edge thickness of the lens 1 during processing, and there will be scratches due to polishing. occurs, causing a significant deterioration in the quality of processed lenses. Furthermore, if the eccentricity is large, a so-called chatter phenomenon occurs during machining, making machining impossible.

The present invention has been made in view of the above-mentioned conventional problems, and it is an object of the present invention to apply the adhesive in a highly accurately centered state without causing eccentricity of the adhesive no matter how much the adhesive protrudes when applying the lens. An object of the present invention is to provide a method for attaching a lens and a device for attaching the lens.

[Means and effects for solving the problems] The present invention provides a heat-soluble patch to the lens surface on the application side of the lens, and applies the lens to the application surface of the application plate in an atmosphere at the melting temperature of the patch. After crimping, the patch is held at a temperature that can maintain the patch in a fluid state and has a concave portion at a portion corresponding to the joint between the lens and the patch plate, which are crimped together. Performing centering while holding the lens and the attachment plate in a centering mechanism unit for centering,
Thereafter, the lens and the attachment plate are immersed in a cooling medium such as a cooling liquid while maintaining the holding state during the centering operation, or the cooling medium is sprayed onto the lens and the attachment plate while maintaining the centering state with the chuck claw. Accordingly, by providing a method and device for applying a lens in which the lens and the application plate are forcibly cooled to harden the patch, it is possible to eliminate the eccentricity of the application and perform good processing.

[Examples] Examples of the present invention will be described below with reference to the drawings.

(First Example) Fig. 1 shows one method of attaching a barrel lens according to the present invention.
FIG. 1 is a perspective view showing a first example of a lens pasting device 10 for carrying out an example.

As shown in the figure, the pasting device 10 includes a patch applying unit 13 for applying a patch 12 (see FIG. 3) to the lens surface of a lens 11, and a lens housing a plurality of lenses 11 to be pasted. a lens conveyance unit 15 having a supply pallet 14 and configured to be movable and controllable in the x and y axis directions;
A first suction section 1 for sucking and holding the lenses 11 on the lens supply pallet 14 and transferring them to the patch application unit 13 section and the heating centering unit 16 section.
7, a pasting plate heating and conveying unit 20 having a pasting plate heating supply pallet 19 that accommodates a plurality of pasting plates 18 in a heated state and configured to be movable and controllable in the X and Y axis directions, and a heated pasting plate 7. 18
a second suction section 22 for suction-holding and transferring it onto the centering table 21 of the heating centering unit 16;
Then, after adhering the lens 11 coated with the adhesive patch 12 to the application plate 18 supplied to the centering table 21 via the first suction part 17, the lens 11 and the application plate 18 are aligned and A centering unit 23 for conveying, a cooling unit 24 for curing the patch 12 after centering work, and a lens 11.
A third suction part 26 for transferring the lens 11 and the pasting plate 18 on which pasting has been completed to a predetermined position on the pasting plate storage pallet 25 arranged in parallel with the pasting plate heating supply pallet 19; 22 and 26 are composed of a suction section transport unit 27 and the like for controlling transport according to each process.

The lens supply pallet 14 is transported to the X-axis direction transport section 3
It is configured to be movable in the X and Y axis directions via the Y axis direction transport section 31. X-axis direction conveyance section 30
is a movable base 3 that supports the lens supply pallet 14.
2. A guide rod 34 that guides and supports the movable table 32 so as to be movable in the X-axis direction 33, and a support base 3.
It is composed of 5th grade. Moreover, the Y-axis direction conveyance section 31
is the block 3 fixed to the lower surface of the support base 35.
a guide rod 3 that guides and supports the lens supply pallet 14 movably in the Y-axis direction 37 in cooperation with the guide rod 6;
8 and a support base 39. In addition,
Each of the transport units 30 and 31 is configured to be controlled to move in the X and Y axis directions via a servo motor (not shown).

The configuration for supporting the pasting plate heating supply pallet 19 and the pasting plate storage pallet 25 so as to be movable and controllable in the X and Y axis directions is the same as that of the lens transport section 15, so similar members will be designated with the same reference numerals. The explanation will be omitted.

The first suction section 17 is composed of a tapered suction tube 41 and a lens supply shaft 42, as shown in FIG. The lens supply shaft 42 is held movably up and down via a support member 45 fixed to a first movable base 44 which is movably held by a guide rail 43 of the suction section transport unit 27, and is also supported by a cylinder device. It is set to be operated up and down via 46.

As shown in FIG. 3, the patch application unit 13 includes a patch application rod 47 for applying the patch 12 to the patch surface 11a of the lens 11, and a patch supply device containing the heat-soluble patch 12. It is composed of 48 mag. The patch applicator stick 47 is configured to be able to be moved up and down via a cylinder device 49.
The patch 12 in the patch supply device 48 is transferred to the lens 11.
It is set so that it can be applied to. 50 indicates a unit base, 51 indicates a movable member, 5
Reference numeral 2 indicates a guide rail, and reference numerals 52a and 52b respectively indicate a variable stopper and a displacement meter.

The heating centering unit 16 is equipped with a centering table 21, and the centering table 21 is heated through the outlet 54a of the plate heater 53 and the heater 54. 55 is the unit base.

As shown in FIG. 4, the second suction part 22 is
It is composed of a suction tube 56 for sucking and holding the flange portion 18a of the pasting plate 18, a pasting plate supply shaft 57, and the like. The pasting plate supply shaft 57 is held so as to be vertically movable via a support member 59 fixed to a second movable base 58, and can be operated vertically via an operation plate 60 and a cylinder device 61. It is set. Reference numeral 62 denotes a shock absorber, which is fixedly held by a holding member 63 fixed to the second movable base 58.

The third suction section 26 is also installed on the second movable base 58 in the same way as the second suction section 22, and its configuration is the same as that of the second suction section 22, so similar members have the same reference numerals. , and the explanation thereof will be omitted.

The centering unit 23 has a unit base 65.
, a movable base 67 configured to be movable in the X-axis direction 37 via a guide rail 66 fixedly mounted on the unit base 65 , an L-shaped member 68 fixedly mounted on the movable base 67 , and a member 68 A vertical movable member 70 configured to be movable in a direction perpendicular to the movable base 67 via a guide rail 69 fixed to an upright portion of It is configured. A lug 72 is fixed to the movable base 67, and a piston rod 74 of a cylinder device 73 for moving the movable base 67 is connected to the lug 72.
In addition, the upper horizontal portion 70a of the vertically movable member 70 includes
A piston rod 75 of a cylinder device (not shown) for moving the vertically movable member 70 is connected thereto. The centering chuck portion 71 includes a pair of chuck pawls 76 facing each other, holding members 77 and 78 of each chuck pawl 76, a support rod 79 for supporting the holding members 77 and 78, and a holding base portion 80. It is more structured. Each chuck pawl 76 is configured to be relatively movable in the opening/closing direction (one side may be fixed and the other side may be movable). A recess 90 is formed in the side surface of the tip of each chuck claw 76 as shown in FIG. Directly grip (pinches) 12 parts of the agent
It's set up so you don't have to. Furthermore, a notch 91 having a V-shape in plan view is formed at the tip of each chuck claw 76 so as to stably hold the lens 11 and the attachment plate 18. A heater 92 is provided near each chuck pawl 76 to heat each chuck pawl 76 during centering.
It is set so that hot air for heating can be blown out from a crotch-shaped outlet 93.

The cooling unit 24 is disposed below the centering adjustment in the centering unit 23, and is set so that each chuck claw 76 can cool the lens 11 and the attachment plate 18 while keeping them centered. There is. The cooling unit 24 includes a cooling tank 95,
It is composed of an annular pasting plate receiving part 96 arranged concentrically in the cooling tank 95 and a cooling liquid 97 such as city water stored in the cooling tank 95. is the circulation port 98 for 97 circulation after cooling.
A suitable number are provided. Reference numeral 99 indicates a support stand.

In addition, what is shown by 100 in FIG. 1 is a plate heater for heating the application plate 18.

Next, the lens pasting device 10 having the above configuration is explained.
A method of attaching the lens 11 to the attaching plate 18 will be explained below.

First, the lens 11 on the lens supply pallet 14 is
As shown in FIG. 2, the first suction section 17 suction-holds the adhesive and transports it to a position above the patch application unit 13.

Next, the lens 11 is
lower to the specified position. Next, as shown in FIG.
is applied (supplied) to the attachment side lens surface 11a of the lens 11.

On the other hand, almost simultaneously with the above operation, the second adsorption section 2
The pasting plate 18 heated in step 2 is suctioned and held from above the storage pallet 19 as shown in FIG.

Next, the second suction section 22 is moved up and restored, and the first suction section 17 is conveyed onto the axis of the centering table 21 . Next, the first suction part 17 is moved down to press the lens 11 suctioned and held onto the application surface of the application plate 18 via the adhesive patch 12 as shown in the fifth section.

Next, as shown in FIG. 6, the lens 11 and the attachment plate 18 are held between the chuck claws 76 and centered so that the lens 11 is attached to the attachment plate 18 at a proper position. During this centering, hot air is blown out from the air outlet 93 to heat the area around the chuck nail 76 to about the melting temperature of the adhesive patch 12. Therefore, even if the excess patch 12 sticks out and adheres to the outer periphery of the patch surface when the lens 11 and the patch plate 18 are pressed together, the patch 12 remains in a dissolved state.
There is no problem with centering operation. Therefore,
Extremely accurate centering operations can be performed.
Furthermore, since centering is performed while avoiding and holding the patch 12 parts, more accurate centering is possible in addition to the above effects.

When the centering operation is completed, the lens 11 and the attachment plate 18 are moved while being held by the chuck claw 76, and are immersed in the cooling liquid 97 in the cooling tank 95 for forced cooling. This cooling hardens the adhesive patch 12, and the lens 11 is adhered and fixed to the adhesive plate 18 in a highly accurately centered state. During this cooling, the effect of the circulation port 98 improves the cooling effect.

When the cooling step is completed, the chuck claw 76 is opened and the third suction portion 26 suction-holds the application plate 18. Then, the third suction section 26 is conveyed onto the pasting plate storage pallet 25 via the suction conveying unit 27, and the pasting plate 18 that has been pasted is stored in a predetermined storage section.

By repeating the above steps, the lenses 11 stocked (set) on the lens supply pallet 14 can be automatically pasted one after another onto the pasting plate 18 in a highly precisely centered state. . Note that the lens supply pallet 14 and the pasting plate storage pallet 25 are used to store the lenses 11 to be pasted.
When one cycle of pasting work and storage work of the pasting plate 18 is completed, the next lens 11 to be pasted is
In order to set the lens 11 at a predetermined position and to store the next pasting plate 18 that has been pasted, movement is controlled in the X and Y axis directions, and this control is performed until there are no lenses 11 on the supply pallet 14.

As described above, according to this embodiment, the lens 11
Even if excess patch 12 protrudes onto the outer peripheral surface of the patch plate 18 and lens 11 when the patch plate 1 and the patch plate 1 are pressed together,
Since it is possible to attach the lens 11 while centering it with high accuracy, and it is cooled while the centering is fixed, it is possible to attach the lens 11 with high precision without attaching eccentricity. Furthermore, since there is no need to consider controlling the amount of protrusion of the patch 12, the patch 12 always maintains a constant film thickness and can be applied with high precision, which further improves the accuracy of the thickness of the lens 11. Furthermore, since the adhesive patch 12 is spread over the entire surface of the lens 11 to which it is applied, it is possible to prevent discoloration. As a result, it is possible to improve the processing accuracy and processing quality when grinding and polishing the lens.

(Second and Third Embodiments) FIGS. 9 and 10 are perspective views showing second and third embodiments of essential parts of an apparatus for carrying out the lens attachment method according to the present invention. .

The second embodiment shown in FIG. 9 is constructed by disposing a plate heater 110 in each chuck pawl 76 instead of the heating heater 92 in the first embodiment. Further, in the third embodiment shown in FIG. 10, the cooling unit 24 in the first embodiment is configured with a cooling pipe 120 and a cooling medium outlet 121, and the cooling medium (liquid, wind, etc.) is supplied from the outlet 121. It is configured so that it can be sprayed onto 18 parts of the application plate to cool it.

In each of the above embodiments, the same effects as in the first embodiment can be achieved.

[Effects of the Invention] As described above, according to the present invention, lenses can be attached with high accuracy without eccentricity, and the processing accuracy and processing quality of lenses can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first embodiment of a lens pasting device according to the present invention, FIG. 2, FIG. 3, and FIG.
Figures 5, 6, 7, and 8 are explanatory views of the main parts of Fig. 1, and Fig. 9 is a perspective view showing a second embodiment of the main parts of the present invention. FIG. 10 is a perspective view showing a third embodiment of the main part of the present invention, and FIG. 11 a, b
is an explanatory diagram of the prior art. 11... Lens, 12... Patch, 13... Patch application unit, 15... Lens conveyance unit, 16... Heating centering unit, 17, 22,
26... Adsorption part, 18... Pasting plate, 23... Centering unit, 24... Cooling unit.

Claims (1)

[Scope of Claims] 1. A heat-soluble adhesive patch is supplied to the application side lens surface of a lens to be applied to an application plate, and the lens is pressure-bonded to the application side of the application plate in an atmosphere at the melting temperature of the patch. After that, while maintaining the patch in a fluid state, the outer periphery of the patch plate and the lens are held between a pair of chuck claws to center the patch plate and the lens, and then the chuck claws The lens and the application plate are forcibly cooled by immersing the lens and the application plate in a cooling medium or by spraying the cooling medium onto the lens and the application plate while maintaining the centered state of the application plate and the lens, and the above-mentioned patch is applied. A method for attaching lenses characterized by curing. 2. A patch application mechanism for applying a heat-soluble patch to the application side lens surface of the lens to be applied to the application plate, and a patch application mechanism unit for applying a heat-soluble patch to the application side lens surface of the lens to be applied to the application plate, and press-bonding the lens to the application side of the application plate in an atmosphere at the melting temperature of the patch. a centering mechanism section for clamping and centering the lens with a pair of chuck claws having a concave portion at a portion corresponding to the joint between the lens and the application plate that are crimped together; and the centering mechanism section. means for heating the lens and the application plate to dissolve the patch during centering by the centering mechanism, and immersing the lens and the application plate in a cooling medium while maintaining the centering state by the centering mechanism, or 1. A lens pasting device comprising: a cooling mechanism section that forcibly cools and hardens the lens and the pasting plate by spraying a cooling medium.