JPH0649600B2 - Lens bonding centering device - Google Patents

Description

The present invention relates to a joining centering device in a joining and assembling process of an optical lens.

[Conventional technology]

Conventionally, as a joining method in the joining and assembling process of optical lenses, a lens joining method of joining and fixing using an ultraviolet ray or a thermosetting adhesive has been adopted, and as an improvement plan of this kind of lens joining method A lens deviation prevention device described in Japanese Patent Laid-Open No. 58-22940 is proposed.

Thus, the lens displacement prevention device described in the publication is the first
1 to 14, the structure and operation will be described below with reference to the drawings. First, as shown in FIGS. 11 to 13, the apparatus first comprises an upper support 54 and a lower support. Three centering bodies 5 that come into contact with and separate from the side edges 57 of the lenses 51 and 52 that are held up and down by the body 55.
8 is provided. A horizontal support shaft 59 is coupled to these centering bodies 58 and is provided so as to be movable back and forth in the radial direction. An escape portion 60 is formed on the inner surface of each centering body 58 to prevent the adhesive 53 from adhering.
The centering body 58 is preferably an elastic body such as plastic or rubber. Further, an ultraviolet irradiation lamp 51 is provided on the side.

In such a configuration, the centering body 58 is retracted to the outside, and the adhesive 53 is attached between the lenses 51 and 52 to perform rubbing, and as shown in FIGS. Is advanced toward the center, and the side edge 57 is abutted to center the lens 51. And the upper support 5
4 is lowered and the lenses 51 and 52 are clamped. At this time, the positions of the lenses 51 and 52 are finely adjusted by the circumferential portion of the upper support 54, and the lenses are pressed with an appropriate force.
Then, the centering body 58 escapes to the outside as shown in FIG. 13, and is irradiated with light by the ultraviolet irradiation lamp 61, and the ultraviolet curable adhesive 53 is solidified.

Next, FIG. 14 shows another embodiment different from the above, in which two centering bodies 62 in the same device are opposed to each other, and each facing surface 63 is a V-shaped portion and a relief portion. 64 is formed. Therefore, the lenses 51 and 52 are joined to the V-shaped facing surface 63 for centering.

[Problems to be Solved by the Invention]

However, the function of the centering body 58 arranged on the outer periphery of the lenses 51 and 52 in the conventional device is that the lower lens 5 is
The displacement of the upper lens 51 with respect to 2 is only prevented to some extent, and the final fine adjustment of the centering is performed by the upper support 5
This is performed by the circumferential portion of No. 4, and the momentum upper support 54
Due to the coaxiality of the lower support 55 and the lens 51,
The core accuracy of 52 is affected, and the upper and lower supports 5
If the coaxiality of 4,55 is not arranged with very high accuracy, the core accuracy of the cemented lens cannot be maintained.

Further, in the conventional device, the joining process and the lapping work for bubble extraction are performed by other artificial means, and the purpose is simply to prevent the lens from being displaced in the centering process. Is not considered at all.

Therefore, in addition to the desired effect of the conventional device, the present invention can perform centering and joining before joining, centering after joining, and setup work corresponding to changes in the diameter of the lens to be joined. Lens cementing centering that improves the workability of this type of cemented lens that can be efficiently performed and that can maintain the core accuracy of the cemented lens without maintaining the high accuracy of the coaxiality of the supporting member of the cemented lens The purpose is to provide a device.

[Means and Actions for Solving the Problems]

The lens cementing centering device of the present invention has a pair of support members, which support a plurality of lenses from the axial direction, coaxially opposed to each other, and contacts the outer peripheral surfaces of the plurality of lenses to perform centering of each lens. A lens centering device in which a plurality of centering members are arranged so as to be capable of advancing and retracting in the radial direction with respect to the center of each lens, wherein the pair of support members includes suction means for the plurality of lenses. One of the support members is movably arranged in the axial direction of the two lenses and in a direction orthogonal to this, and at least two centering members of the plurality of centering members are scroll chucks. It is constituted by providing a pressurizing means for supporting a forward / backward movement through the at least one centering member and applying a predetermined pressing force to at least one centering member.

Thus, FIG. 1 is a side view showing the basic structure of the device of the present invention, FIG. 2 is a plan view thereof, and FIGS. 3 and 4 are explanatory views of its operation.

In the basic configuration of the device of the present invention, the upper and lower supporting members 3 and 4 of the upper and lower cemented lenses 1 and 2 as the cemented lenses both have means for adsorbing and detaching both the lenses 1 and 2. The lower support member 4 arranged coaxially is fixedly arranged, but the upper support member 3
Are arranged so as to be horizontally movable in the vertical direction of the shaft and in the direction orthogonal thereto.

Further, each of the support claws 5, 6 and 7 as three centering members arranged so as to be able to advance and retreat in the radial direction with respect to the axes of the upper and lower support members 3 and 4 is highly accurate at an arbitrary position between the advance and retreat directions. The outer diameter support claws 5 and 6 are arranged so as to perform various positionings, and the outer diameter pressing support claws 7 having the pressing means 8 for pressing the lenses 1 and 2 with a predetermined appropriate pressure. Adhesive 1 applied to the lower cemented lens 2 supported by the lower support member 4 and an adhesive 10 that applies an adhesive 10 to the lens 2 and is movable back and forth.
It is configured by arranging a hardening means 11 capable of advancing and retracting 0 for hardening 0 after the joining process of the upper cemented lens 1.

In order to explain the operation of the lens cementing centering device having the same structure with reference to FIGS. 3a to 3g and FIG. 4, first, in FIG.
Positioning according to the diameters of the upper and lower cemented lenses 1 and 2 is preset, and 7 and 7 are retracted and set to the retracted positions, respectively.

On the other hand, the upper support member 3 horizontally moves to the position indicated by the dotted line, and the lens supply position as the cemented lens (for example, a lens storage unit that stores and holds a lens (not shown) or a lens that stores and holds the lens individually) is held. , The lower lens 2 is sucked and held by a robot hand (not shown, which is supplied to the supply position for the upper support member 3 at the dotted line position), and then horizontally moved to the original position again and stopped coaxially with the lower support member 4. At the same time, the lower cemented lens 2 that descends on the axis and is suction-held is placed on the upper side of the lower support member 4, then the suctioned state is released, and the lift-up to the original position is stopped again.

The axis of the lower cemented lens 2 placed on the upper side of the lower support member 4 is not aligned with the lower support member 4.

Therefore, in FIG. 3b, the outer diameter claws 5 and 6 are advanced and positioned to a position corresponding to the preset outer diameter of the lower cemented lens 2, and the pressing means is associated with this positioning operation. By the operation of 8, the outer diameter pressing support claw 7
Moves forward to press the lower cemented lens 2 against the positioned outer diameter support claws 5 and 6, so that the axis of the lower cemented lens 2 is aligned with the axis of the lower support member 4. Complete the alignment.

In FIG. 3c, in connection with the above operation, the upper support member 3 horizontally moves to the lens supply position and sucks and holds the upper cemented lens 1, and horizontally moves to the original position to form the lower support member 4. The upper cemented lens 1 is adsorbed and held on the axis of and stopped.

In connection with this, the support claws 5, 6 and 7 are retracted to the retracted position again.

Further, the upper cemented lens 1 is not sucked and held in a state of being aligned with the upper support member 3.

Therefore, in FIG. 3D, the upper support member 3 descends on the same axis as the lower support member 4 and stops immediately before the upper cemented lens 1 is cemented with the lower cemented lens 2. In the same operation as in FIG. 3b, the support claws 5, 6 and 7 are actuated to move forward, and the upper and lower cemented lenses 1 and 2 are brought into a suction holding state by the upper and lower support members 3 and 4, respectively. The side faces are pressed and fixed together by the respective support claws 5, 6 and 7.

At this time, the lower cemented lens 2 does not move because the centering has been completed in the above, but the upper cemented lens 1 is preliminarily positioned by the pressing force of the outer diameter pressing support claws 7 and 6. By being abutted against, the axial center of the upper support member 3 is aligned and aligned.

In Fig. 3e, after the operation of Fig. 3d, the support claws 5, 6 and 7 are retracted to the retracted position again, and in connection therewith, the upper support member 3 is raised and the adhesive applying means 9 is applied. Moves forward to the coating position and the lower cemented lens 2
The adhesive 10 is quantitatively applied to the center of the above and retracted and retracted again, and each support claw 5, 6 and 7 also retracts to the retracted position.

In FIG. 3f, the upper support member 3 slowly descends, and the upper cemented lens 1 held by this is brought into contact with the cemented surface of the lower cemented lens 2, and the adhesive 10 is applied to the entire cemented surface of both lenses 1 and 2. Spread to.

At this time, both the lenses 1 and 2 are centered with respect to the upper and lower support members 3 and 4 and the adhesive 10 is applied to the center of the lens 2 in the above-mentioned operation, so that the adhesive 10 becomes a bubble. It is possible to spread evenly without entering, and it is possible to eliminate the need for the lens lapping work required after the joining in the conventional joining work of this kind.

Then, in FIG. 3g, after the suction of the upper support member 3 is released, the upper support member 3 is raised and returned to the original position, and in connection with this, the outer diameter support claws 5 and 6 are advanced and positioned at a predetermined position. At the same time, the outer diameter pressing support claw 7 is moved forward through the pressing means 8 to bring the upper and lower cemented lenses 1 and 2 into contact with the two claws 5 and 6, and realignment is performed.

After the centering, the adhesive curing means 11 moves forward to the curing position to cure the adhesive 10 on the cemented surfaces of the upper and lower cemented lenses 1 and 2, and returns to the original position again.

After the completion of this curing operation, in connection with the return of the respective support claws 5, 6 and 7 to their original positions, the two lenses 1 after being joined via an unillustrated carrying-out means (for example, a robot hand) or the upper support member 3. After carrying out the products 1 and 2 and discharging them to a predetermined collecting position, the joining work of the lenses 1 and 2 connected to each other can be performed by the same work as described above.

FIG. 4 shows a cemented state in which the outer diameters of the cemented lenses 12 and 13 are changed from those in the case shown in FIG. 3, and particularly when the lens diameters change, the respective support claws 5, 6 and 7 are also shown. Can be positioned with high precision, and can be handled while performing highly accurate positioning corresponding to the diameter of the cemented lens, and the outer diameter pressing support claw 7 can be applied with a predetermined pressure by the pressing means 8 to support the outer diameter supporting claw. The lens to be cemented can be applied to the lenses 5 and 6, and the setup work for changing the outer diameter of the lens to be cemented can be simplified.

〔Example〕

A more specific embodiment of the device of the present invention will be described below with reference to the drawings.

(First Embodiment) FIGS. 5 to 8 show a first embodiment of the device of the present invention. FIG. 5 is a partially longitudinal side view, FIG. 6 is a plan view, and FIG. 7 is an upper support member. FIG. 8 is an explanatory view showing a supply state of the moving means and the upper and lower cemented lenses, and FIG. 8 is a circuit diagram showing the suction means of the upper and lower cemented lenses of the upper and lower supporting members.

5 and 7, 14 is a scroll chuck that supports the outer diameter support claws 5 and 6 and the outer diameter pressing support claw 7, and the scroll chuck 14 is
The disc-shaped main body 17 having the insertion portions 15 of the upper and lower cemented lenses 1 and 2 opened at the center and provided with three guides 16 at equal intervals in the radial direction with respect to the axis of the insertion portions 15 and The two slide pieces 18 mounted so as to be movable back and forth through the guide 16a in the length direction of the guide 16 and the clip 2 on the bearing portion 19 of the main body 17
Each slide piece 1 rotatably attached through 0
8 has a screw 21a which is screwed into the screw 18a, and a timing belt 22c stretched between an operating rotary member 21 of each slide piece 18 and a pulley 22a fixed to the rotary member 21 and a pulley 22b fixed to a drive shaft 23a. And a drive motor 23 for the rotating body 21 connected via the. The drive motor 23 is composed of a drive motor capable of precise positioning such as a pulse motor or a servo motor.

Further, the support claws 5 and 6 are fixed to the upper side of the slide pieces 18, and the outer diameter pressing support claw 7 is attached to the main body 17 through the guide 16 so as to be movable back and forth and fixed to the main body 17. It is connected to a cylinder 43 as a pressing means.

Further, as shown in FIG. 6, the upper support member 3 is configured so as to be vertically movable with respect to the support member 25 and can be positioned at any position between the vertical directions.

That is, the upper support member 3 is provided with the vertical slide block 26.
The vertical slide block 26 is vertically guided via a guide rod 27 attached to the support member 25, and the vertical slide block 26 is connected to a screw block 28 screwed to the ball screw 29, and the ball screw 29 is attached. It is configured by connecting to a drive shaft 31 of a drive motor 30 fixed to the support member 25.

Further, the upper support member 3 is supported by the support member 25 that is movably supported in the horizontal direction with respect to the support frame 32.
It is movably supported in a direction orthogonal to the vertical direction (horizontal direction) and can be positioned at any position between the horizontal directions.

That is, the support member 25 is connected to a ball screw 34 rotatably mounted on the support frame 32 via a screw block (not shown), and the ball screw 34 is connected to a drive shaft 36 of a drive motor 35. In addition, the support member 25 is guided by the guide 33 of the support frame 32.

Further, the upper and lower support members 3 and 4 are made of a hollow cylindrical body having a centering portion at the front end circumferential portion, and as shown in FIG. 8, a pneumatic circuit is connected to the hollow portion to center the front end. It is configured so that the cemented lens can be adsorbed and held by the portion.

That is, in FIG. 8, the ejector 22 generates negative pressure by supplying compressed air, and is connected to the connecting portions 37 of the upper and lower support members 3 and 4 via the filter 40, respectively.

Further, a valve 41 for controlling the supply of compressed air to the ejector 22 is provided, and a silencer 39 for preventing exhaust noise is provided.

Therefore, it is configured such that the adsorption and separation control of the cemented lens on the upper and lower support members 3 and 4 can be performed through the ON-OFF control of the valve 41.

Further, as shown in FIGS. 5 and 6, the lower support member 4 is coaxially opposed to the upper support member 3 and is disposed at a fixed position.

The configurations shown in FIGS. 5 to 7 other than the above-described configurations are the same as the configurations shown in FIGS. 1 and 2 described above, and the same reference numerals are given to omit the description thereof.

A method of performing the joining and centering work of the upper and lower cemented lenses 1 and 2 by the lens cementing centering device having the above configuration will be described below. First, as shown in FIG. The upper support member 3 is positioned so that it can be stopped coaxially with the lower support member 4 at one end portion in the horizontal direction, and the supply positions of the upper and lower cemented lenses 1 and 2 at the other end portion. Of the drive motor 35 (not shown) so that the lens pallet 42 disposed in the
Set by.

In addition to this, the upper support member 3 stopped coaxially with the lower support member 4 moves the upper and lower slide blocks 26 of the support member 25 up and down between the upper and lower slide blocks 26 of the lower support member 4 during the vertical movement. Is stopped at each of the descending end position and the ascending end retreat position where the upper joint lens 1 can be placed on the upper side of the lower support member 4 and the joining position for joining the upper cemented lens 1 and the lower cemented lens 2 between these positions. In addition, during the descending operation to the cemented position, the adhesive 10 can be spread slowly over the entire joint surface of the lenses 1 and 2 and the descending operation of the cemented lens can be performed. It is set in advance by a control unit (not shown) of the drive motor 30 so as to perform an ascending / descending operation to the ascending / descending position of the supply position of the supply unit and the holding position of the cemented lens.

Furthermore, the control of the valve 41 described above is performed through the pneumatic circuits in the upper and lower support members 3 and 4 to perform control corresponding to each operation of adsorbing and detaching the upper and lower cemented lenses 1 and 2 in the upper and lower support members 3 and 4. It is preset by a part (not shown).

Further, the support claws 5 and 6 supported by the scroll chuck 14 are the drive motors 2 for the scroll chuck 14.
3 and the support claws 7 can be positioned at the centering position and the retracted position of the upper and lower cemented lenses 1 and 2 which are suction-held by the upper and lower supporting members 3 and 4 via a control unit (not shown) of the cylinder 43. At the same time, the application means 9 and the curing means 11 for the adhesive 10 are also set so that they can be positioned at the application and cure positions and the retracted position, respectively.

Thereafter, the drive motor 35 is actuated to operate the upper support member 3
Moves to the supply position of the cemented lens, and in connection with this, the upper and lower cemented lenses 1 and 2 are coupled via the lens pallet 42.
Are supplied to corresponding positions where they can be attracted by the upper support member 3 and abut on the front end of the upper support member 3. In connection with this, the valve 41 is turned on and either the upper or lower cemented lens 1 or 2 is adsorbed and held.

Therefore, in connection with the completion of this suction operation, the drive motor 3
5 operates to horizontally move the upper support member 3 to a position coaxial with the lower support member 4, and in connection therewith, each operation required by the operation of the drive motor 30 is performed. The ON-OFF operation of the valve 41 corresponding to each required operation required in association with each operation is performed.

In addition, in association with the joining operation of the above-mentioned respective portions, the operation corresponding to each required operation required for each supporting claw 5, 6 and supporting claw 7 in the scroll chuck 14 is the drive motor 2.
3 and the operation of the cylinder 43.

That is, each of the support claws 5 and 6 has a slide piece 18 that is screwed into a screw 21a of the rotary body 21 by rotating the rotary body 21 via the pulleys 23a and 23b by the operation of the drive motor 23. Guide 16 in the direction of the arrow
It moves through the position and is positioned and set between the centering position and the retracted position which are set in advance.

By the operation of each of the above parts, the cementing work described with reference to FIG.
It is possible to continuously and automatically perform the joining operations of 2 and 2.

Since the explanation of the operation corresponding to each operation shown in FIG. 3 is the same, the detailed explanation is omitted.

According to the lens cementing centering device of the present embodiment described above, in addition to the operational effects obtained from the basic configuration of FIGS. 1 to 4, especially by using the scroll chuck 14, a uniaxial positioning drive motor is provided. With 23, the positions of the two outer diameter support claws 5 and 6 can be precisely controlled to be positioned at arbitrary positions, so that the entire structure can be downsized.

Further, the pressurization control of the outer diameter pressing support claw 7 is performed by the air cylinder 4
By performing the operation through the step 3, it is possible to apply a constant amount of pressing force to the lens side surface, which is not affected by the lens diameter of the cemented lens.

(Second Embodiment) FIGS. 9 and 10 show a second embodiment of the present invention. FIG. 9 is a partially longitudinal side view of a main portion, and FIG. 10 is a plan view of the same.

The present embodiment is different from the first embodiment in the configuration of the rotation drive transmission means of the rotating body 21 by the drive motor 23 in the scroll chuck 14 and the pressing means of the outer diameter pressing support claw 7, and has the same configuration as that shown in the drawing. Only the constituent parts are designated and the same constituent parts are designated by the same reference numerals in the drawings, and only the different constituent parts will be described below.

A gear 24a is fixed to the outer circumference of the rotating body 21 and a drive gear 24b is fixed to the drive shaft 23a of the drive motor 23, and the driving force of the drive motor 23 is transmitted through the gear 24a meshing with the drive gear 24b. The rotary body 21 can be rotated.

The outer diameter pressing support claw 7 guided by the guide 16 of the scroll chuck 14 main body 17 is pressed by the spring 46 of the pressing support member 45 attached to the slide piece 44 screwed with the screw 21a of the rotating body 21. At the same time, the hook 47 of the pressing support member 45 is held by being locked with the projection 48 protruding from the outer diameter pressing support claw 7.

Therefore, the outer diameter pressing support claw 7 which is constantly pressed and urged in the acting direction by the pressing force of the spring 46 can be retracted against the elasticity of the spring 46 by the contact of the tip with the lens to be joined. It is configured.

Therefore, according to the present embodiment as well, similarly to the first embodiment, it is possible to continuously and automatically perform the centering operation of the upper and lower cemented lenses 1 and 2, and in particular, the amount of pressing force of the outer diameter pressing support claw 7 is increased. Is performed via the elastic member via the spring 46, and the deformation amount of the spring 46 is synchronized with the operation of the other outer diameter support claws 5 and 6, so that the outer diameter of the cemented lens is changed. Can be kept constant and the configuration can be simplified and downsized.

Further, by using a gear as a means for transmitting the rotational force of the drive motor 23 of the scroll chuck 14, the configuration can be simplified and downsized.

In the above description of the embodiments, the cementing of the upper and lower cemented lenses has been described, but it is also possible to apply this to the cementing of two or more lenses, and the number of each supporting claw in the scroll chuck. Also, it is possible to implement without being limited to the number of embodiments.

Similarly, other desired design changes of the device of the present invention can be carried out to obtain desired effects and effects, and the present invention is not limited to the above embodiment.

〔The invention's effect〕

 According to the device of the present invention, the following effects can be obtained.

(1) Since centering can be performed before joining the cemented lenses, air bubbles in the adhesive generated at the time of joining are prevented,
The need for manual rubbing work is eliminated, the quality is stable, and automation is easy.

(2) Since a plurality of centering members positioned by the control of the scroll chuck and a centering member that presses the lens side surface with a constant force perform centering of the cemented lens,
Even if the lens diameter is changed, it is only necessary to change the position by motor control, and the setup efficiency is extremely high and workability can be improved.

(3) Since the centers of the joined lenses to be joined are aligned by sandwiching the outer diameter of the lens with a plurality of centering members of 3 or more, even if the coaxial precision of the upper and lower support members is low, the desired center is achieved. The dispensing accuracy can be maintained.

(4) The upper support member can be moved in the vertical and horizontal directions, and the means for holding the lens by suction can perform not only the centering operation of the cemented lens but also the cementing process itself continuously. .

[Brief description of drawings]

1 and 2 are a side view and a plan view showing the basic configuration of the device of the present invention, FIGS. 3a to 3g and 4 are explanatory views of the operation, and FIGS. 5 to 8 are the present invention. The 1st Example of an apparatus is shown, FIG. 5 is a partial longitudinal side view, FIG. 6 is a top view,
FIG. 7 is an explanatory view showing the moving means of the upper support member and the supply state of the upper and lower cemented lenses, and FIG. 8 is a circuit diagram showing the suction means of the upper and lower cemented lenses of the upper and lower support members, FIGS. 9, and 10. FIG. 9 shows a second embodiment of the present invention, FIG. 9 is a partially longitudinal side view of a main portion, FIG. 10 is a plan view thereof, and FIGS.
FIG. 4 is an explanatory view showing a conventional lens joining device. 1 ... Upper cemented lens 2 ... Lower cemented lens 3 ... Upper support member 4 ... Lower support member 5, 6 ... Outer diameter support claw 7 ... Outer diameter pressing support claw 8 ... Pressing means 9 ... ... Adhesive applying means 10 ... Adhesive 11 ... Adhesive curing means 12 ... Upper cemented lens 13 ... Lower cemented lens 14 ... Scroll chuck 15 ... Insert part 16 ... Guide 17 ... Main body 18 ... Slide frame 19 ... Bearing part 20 ... Clip 21 ... Rotator 22a, 22b ... Pulley 22c ... Timing belt 23 ... Drive motors 24a, 24b ... Gear 25 ... Supporting member 26 ... Up and down Slide block 27 …… Guide rod 28 …… Screw block 29 …… Ball screw 30 …… Drive motor 31 …… Drive shaft 32 …… Support frame 33 …… Guide 34 …… Ball screw 35 ...... Drive motor 36 …… Drive shaft 37 …… Coupling 38 …… Ejector 39 …… Silencer 40 …… Filter 41 …… Valve 42 …… Pallet 43 …… Cylinder 44 …… Slide piece 45 …… Pressing support member 46 ...... Spring 47 …… Hook 48 …… Protrusion

Claims (1)

[Claims] 1. A plurality of cores for centering each lens by arranging a pair of support members, which support a plurality of lenses in the axial direction, coaxially and facing each other, and abutting on outer peripheral surfaces of the plurality of lenses. In a lens centering device in which an output member is arranged so as to be capable of advancing and retreating in the radial direction with respect to the center of each lens, the pair of support members is provided with suction means for the plurality of lenses, and A support member is movably arranged in the axial direction of the two lenses and in a direction orthogonal to the axial direction, and at least two centering members of the plurality of centering members are moved back and forth through a scroll chuck. A lens-bonding centering device, which is movably supported and has at least one centering member provided with a pressurizing means for applying a predetermined pressing force.