JPS63278756A - Bonding method for lens and bonding device therefor - Google Patents

Abstract

PURPOSE:To bond a lens without any eccentricity and with high precision by feeding a heat melting type adhesive to the bonding surface of the lens, pressing the lens to a bonding tray in a melting temperature environment for alignment and cooling the lens after the alignment for curing the adhesive. CONSTITUTION:The bonding surface of a lens 11 is fed with a heat melting type adhesive 12, and hot air is blown from two outlets 93 of a heater 92, thereby keeping a melting temperature environment for the adhesive 12 and pressing the lens 11 to the bonding surface of a bonding tray 18. And with the adhesive 12 kept in a fluid condition, the V-notches 91 of two chucking claws 76 are used to align the lens 11 with the bonding tray 18. Thereafter, the lens 11 is immersed in a cooling liquid contained in a cooling tank and the adhesive 12 is thereby cured, while alignment is kept between the lens 11 and the tray 18. According to the aforementioned process, the lens 11 can be bonded with high precision and without any eccentricity, and it is possible to improve the processing accuracy and quality of a lens.

Description

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

[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. , upper shaft (pink stick) for pressurizing the lens against the Kenfu plate
and a sliding mechanism for driving the lower shaft side or the polishing side (lower shaft side). It is disclosed in JP-A-59-196158.

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, such an affixing method is shown in Fig. 11 a y b. That's what I was doing.

That is, first, a hot-melt adhesive patch 3 is applied to the spherical surface of the lens l, which is the object to be processed, and/or to the application surface 2a of the lens application plate 2.
Then, in an atmosphere in which the adhesive patch 3 is dissolved, the lens 1 is pressed against the application surface 2a of the lens application plate 2 with a constant pressing force, and the lens 1 is applied to the application plate 2. During this pressing, the patch 3 is spread from the center of the patch surface 2a to the periphery, the patch 3 is spread over the lens l and substantially the entire surface of the patch surface 2a, and the excess patch 3 is spread from the patch surface 2a to the outer periphery. 0
Next, perform a centering operation via the centering chuck 4,
Then cool.

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

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

That is, in the above-mentioned 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. For this reason, even if the centering work is carried out, there will be eccentricity of the patch corresponding to the thickness of the adhesive patch 13 adhered to the centering operation surface, and this eccentricity will cause defects in the edge thickness and polishing scratches of the lens l during processing. However, this caused 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 was made in view of the above-mentioned conventional problems, and it is possible to apply a lens in a highly accurately centered state without causing eccentricity of the application, no matter how much the patch sometimes protrudes. It is an object of the present invention 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 adhesive 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, centering is performed while holding the lens and application plate in a centering operation section whose temperature is set to maintain the patch in a fluid state, and then holding during centering operation. By providing a method and device for applying a lens that hardens the adhesive patch by cooling it while maintaining its condition, it is possible to eliminate eccentricity in the application and perform good processing.

[Example] An example of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a perspective view showing a first embodiment of a lens pasting apparatus 10 for carrying out an embodiment of the lens pasting method according to the present invention.

As shown in the figure, the pasting device 2110 includes a pasting-side application unit 13 for applying the pasting agent 12 (see FIG. 3) to the lens surface of the lens 11, and a lens accommodating a plurality of lenses 11 as objects to be pasted. It has a supply pallet 14 and
A lens transport unit 15 configured to be movable and controllable in the x and y axis directions, and a lens 11 on a lens supply pallet 14.
a first adsorption section 17 for suction-holding and transferring the patch to the patch application unit 13 and the heating centering unit 16; and a pasting plate heating and conveying unit 20 configured to be movable and controllable in the X and Y axis directions, and holding the heated pasting plate 18 by suction and transferring it onto the centering table 21 of the heating centering unit 16. After adhering the lens 11 coated with the adhesive patch 12 to the second suction part 22 and the application plate 18 supplied to the centering table 21 via the first suction part 17, the lens 11 and A centering unit 23 for centering with the application plate 18, and a cooling unit 24 for curing the patch 12 after the centering work.
, a third suction part 26 for transferring the pasting plate 18 on which the lens 11 has been pasted to a predetermined position on the pasting plate storage pallet 25 arranged in parallel with the pasting plate heating supply pallet 19, and each suction part 17. , 22.26 are transported according to each process.
It is composed of 27 suction unit transport units for transporting.

The lens supply pallet 14 is configured to be movable in the x- and y-axis directions via an x-axis direction conveyance section 30 and a y-axis direction conveyance section 31. The X-axis direction conveyance unit 30 moves the movable base 32 supporting the lens supply pallet 14 and the movable base 32 in the Y-axis direction 3.
3, a guide rod 34 that guides and supports the rod 3 in a movable manner, a support base 35, and the like. Further, the Y-axis direction conveyance unit 31 moves the lens supply pallet 14 in the X-axis direction 37 in cooperation with a block 36 fixed to the lower surface of the support base 35.
It is composed of a guide rod 38 and a support base 39, which are movably guided and supported. In addition, each conveyance section 30.3
1 is connected to x, Y via a servo motor (not shown).
The structure is such that movement is controlled in the axial direction.

Pasting plate heating supply pallet 19 and pasting plate storage pallet 2
5 is supported in a controlled and movable manner in the X and Y axis directions, and is the same as that of the lens conveying section 15, so similar members are given the same reference numerals and their explanations 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 attached to a first movable base 4 that is movably held on a guide rail 43 of the suction unit transport unit 27.
It is set to be held so as to be vertically movable via a support member 45 fixedly attached to 4, and to be operated vertically via a cylinder device 2146.

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 side supply housing the heat-soluble patch 12. It consists of a device 48 and the like. Patch application stick 4
7 is configured to have a vertically movable mortar via a cylinder device 2149.

The setting is such that the patch 12 in the patch tray supply shaft 48 can be applied to the lens 11. Reference numeral 50 indicates a unit base, reference numeral 51 indicates a movable member, reference numeral 52 indicates a guide rail, and 52a.

Reference numerals 52b indicate a stopper and a pressure gauge, respectively.

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

As shown in FIG. 4, the second adsorption section 22
A suction cylinder 56 for suctioning and holding the flange portion 18a of No. 8
It is composed of 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 the second movable base 5B, and can be operated vertically via an operation plate 60 and a cylinder device 261. 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 includes a unit base 65, a movable base 67 configured to be movable in the X-axis direction 37 via a guide rail 66 fixed on the unit base 65, and a movable base 67 fixed on the movable base 67. A vertically movable member 70 configured to be movable in a direction perpendicular to the movable base 67 via guide rails 69 fixed to the upright portions of the L-shaped member 68 and the five members 68; It is composed of a centering chuck part 71 and the like.

A lug 72 is fixed to the movable base 67, and a cylinder device 21 for moving the movable base 67 is attached to the lug 72.
73 piston rods 74 are connected. Further, the upper horizontal portion 70a of the vertically movable member 70 is provided with a vertically movable member 70.
A piston rod 75 of a cylinder device (not shown) for moving operation is connected. The centering chuck part 71 includes a pair of chuck claws 76 that are spaced apart from each other, holding members 77 and 78 of each chuck claw 76, a support rod 79 for supporting the holding members 77 and 78, and a holding base part 80. It is composed of Each chuck claw 76 is configured to be relatively movable in the opening/closing direction. A recess 90 is formed in the side surface of the tip of each chuck claw 76, as shown in FIG.
This setting is made so that the adhesive patch 12 portion is not directly grasped (pinched) when performing the six-out operation. Further, at the tip of each chuck claw 76, a lens ll and a pasting plate 18 are attached.
A V-shaped notch 91 is provided to stably hold the
is the format.

Near each chuck jaw 76, each chuck jaw 7
A heater 92 is provided for heating the air conditioner 6, and is set so that hot air for heating can be blown out from two (bifurcated) air outlets 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. It is. The cooling unit 24 is
It is composed of a cooling tank 95, an annular sticking plate holder 96 arranged concentrically within the cooling tank 95, and a cooling liquid 97 such as city water stored in the cooling tank 95. On the circumferential surface of the portion 96, circulation ports 98 for the cooling liquid 97wU ring are arranged in appropriate stages. 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, a method of attaching the lens 11 to the attaching plate 18 using the lens attaching device IO having the above configuration will be explained.

First, the lens 11 on the lens supply pallet 14 is suctioned and held by the first suction section 17 as shown in FIG. 2, and is conveyed to an upper part of the patch application unit 13.

Next, the lens 11 is moved down to a predetermined position t via the cylinder device 46. Next, as shown in FIG. Apply (supply) to.

On the other hand, almost simultaneously with the above operation, the application plate 18 heated by the second suction unit 22 is suctioned and held from above the storage pallet 19 as shown in FIG.
The centering table 21 of

Next, the second suction part 22 is moved upward to return to its original position,
0 to transport the first suction section 17 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
are held between the chuck claws 76, and the lens 11 is attached to the attachment plate 1.
Perform centering so that it can be pasted in the correct position of 8.
During this centering, hot air is blown out from the air outlet 93,
The area around the chuck claw 76 is heated to about the melting temperature of the adhesive patch 12. Therefore, even when the lens 11 and the adhesive plate 18 are pressed together, even if excess adhesive agent 12 protrudes and adheres to the outer periphery of the adhesive surface, Since the adhesive patch 12 is in a dissolved state, there is no hindrance to the centering operation, and therefore an extremely accurate centering operation 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.

After the centering operation is completed, use the chuck claw 76 to remove lens 1.
1. While holding the application plate 18, move it downward and immerse it in the cooling liquid 97 in the cooling tank 95 for forced cooling. This cooling hardens the patch 12, and the lens 1.1 is fixed on the patch plate 18 in a highly accurately centered state.

During this cooling, the effect of the circulation port 98 improves the cooling effect.

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

By repeating the above process, 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. be. In addition, the lens supply pallet 14. The pasting plate storage pallet 25 stores the lens 11 to be pasted and the pasting plate 18 after one cycle of pasting work and storage work is completed.
X in order to set it in a predetermined position and to store the next pasting plate 18 that has been pasted.

The movement is controlled in the Y-axis direction, and this control is performed until there are no lenses 11 on the supply pallet 14.

As described above, according to this embodiment, even if the excess patch 12 protrudes onto the outer peripheral surfaces of the application plate 18 and the lens 11 when the lens 11 and the application plate 18 are crimped together, the centering can be performed with high precision. Moreover, since the lens 11 is cooled while the centering is fixed, it is possible to attach the lens 11 with high accuracy without any eccentricity in the attachment. 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. It is possible,
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, we are able to improve the processing accuracy and quality when grinding and polishing lenses.

(Second and Third Embodiments) FIG. 9 and FIG. FIG. 7 is a perspective view showing a third embodiment.

The second embodiment shown in FIG. 9 is constructed by disposing a plate heater 110 in each chuck jaw 76 instead of the heating heater 92 in the first embodiment. or,
The third embodiment shown in FIG.
21, and is configured so that a cooling medium (liquid, wind, etc.) can be blown onto the attachment plate 18 from the outlet 121 for cooling.

Each of the embodiments described above also provides the same effects as the first embodiment.

[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 drawings]

FIG. 1 is a perspective view showing a first embodiment of a lens pasting device according to the present invention; FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6; 7 and 8 are explanatory diagrams of the main parts of FIG. 1, FIG. 9 is a perspective view showing a second embodiment of the main parts of the present invention, and FIG. 10 is a main part of the present invention. FIGS. 11a and 11b are explanatory diagrams of the prior art. 11...Lens 12...Patch 13...Patch application unit/) 15...Lens transport unit 16...Heating 6 output unit/) 17.22.26...Adsorption section 18... Attachment plate 23...Centering unit 24...Cooling unit Patent applicant Olympus Optical Industry Co., Ltd. Agent Patent attorney Takeshi Nara Figure 7 Figure 11 (a) (b) Procedural amendment (voluntary) 1988 August 19, 1988 Patent Application No. 111585 2 Name of the invention Lens affixing method and its affixing device 3 Relationship with the case of the person making the amendment Patent applicant address 2-43 Hatagaya, Shibuya-ku, Tokyo No. 2 Name (03?) Olympus Optical Industry Co., Ltd. Representative Shimoyama Takube 4, Agent 7 Contents of amendment (1) Written from page 3, line 6 of the specification to line 7 of the same page "Thermolysis temperature" is corrected as "thermal solubility." (2) Ill Endorsement Page 4, No. 9 is corrected to read "Patch 3." ■ "Centering" described on page 6, line 18 of the specification,
Corrected as "centering and conveyance". (4) "Application plate 18J" stated in the first line of page 7 of the specification
is corrected with the lens 11 and the attachment plate 18J. (5) rY-axis direction 3 described in page 7, line 11 of the specification
3'' is corrected to 33'' in the rX-axis direction. (Q Correct "rX-axis direction 37" written from line 15 on page 7 of the specification to line 7 of the same page to "rY-axis direction 37". ■ "Stopper" written on page 4 of page 99 of the specification . Pressure gauge" is corrected to "variable stopper, displacement gauge." (8) [J1 Specification Box page 14 line 10 "
Correct "downward movement" to "movement".

Claims (2)

[Claims] (1) After supplying a heat-soluble patch to the lens surface on the application side of the lens and pressing the lens to the application surface of the application plate in an atmosphere at the melting temperature of the patch, the patch becomes fluid. Centering is performed while holding the lens and the patch plate in a centering operation part set to a temperature that can be maintained at a temperature that can be maintained at a temperature of A method for attaching lenses characterized by: (2) A patch application mechanism for applying a heat-soluble patch to the lens surface on the application side of the lens, and a mechanism for press-bonding the lens to the application surface of the application plate in an atmosphere at the melting temperature of the patch. and a centering mechanism section having a function of centering the lens and the application plate which are crimped together, and having a control section for controlling at least heating and cooling of the patch while maintaining the centering. A lens pasting device characterized by comprising: