KR200367334Y1 - Apparatus for assembling a lens - Google Patents

Abstract

The present invention relates to a lens assembling apparatus, and relates to a lens assembling apparatus for identifying an accurate position of a barrel and automatically assembling a lens at that position. The invention devises a pickup unit 500 for picking up a lens to be assembled to a lens clamping position, and a clamping unit 400 which is transported, up and down, and rotated in a state of clamping a lens picked up at a lens clamping position by the pickup unit 500. And, the transfer unit 100 for transferring the clamping unit 400 between the lens clamping position and the lens assembly working position, and the main up-down driving unit 200 for up and down the clamping unit 400 transferred to the lens assembly working position, It provides a lens assembly device characterized in that it comprises a rotary drive unit 300 for rotating the clamping unit 400 for lens assembly. In addition, the lens assembly of the present invention preferably has a position recognition unit 600 which is installed to have a fixed position with respect to the clamping center line of the clamping unit, the lens is assembled by the position recognition unit 600. After recognizing the position of the barrel, when the clamping unit 400 is transported to the lens assembly work position, it corrects and transfers by the position error value of the barrel.

Description

Lens assembly device {APPARATUS FOR ASSEMBLING A LENS}

The present invention relates to a lens assembling apparatus, and relates to a lens assembling apparatus for identifying an accurate position of a barrel and automatically assembling a lens at that position.

In optical devices such as cameras, lenses are used to focus light, which is assembled to the barrel. In particular, recently, models equipped with small camera modules in mobile phones, laptops, etc. have been released, and the demand is increasing explosively.

However, conventionally, the lens was assembled by hand into the barrel or the lens was assembled using an early model lens assembly device. However, assembling by hand is very poor in productivity and cannot be applied to mass production, and conventional lens assembly devices also have disadvantages in that precision and workability are poor.

Therefore, the development of the automatic lens assembly apparatus excellent in the precision and workability has been called for.

The present invention has been made to solve the above problems, the object of the present invention is to provide an automatic lens assembly device excellent in precision and workability.

In other words, by accurately determining the position of the barrel and assembling the lens accurately at the position, it contributes to the improvement of the accuracy of the manufactured camera module and can be protected from failure and damage of the lens assembly device.

In addition, it is possible to automatically proceed and control the whole process from lens pickup to completion of assembly, thereby improving workability and contributing to factory automation.

1 is an overall perspective view of a lens assembly according to a preferred embodiment of the present invention.

FIG. 2 is a perspective view of the main up-down driving unit of the lens assembly of FIG. 1. FIG.

Fig. 2B is a front view of Fig. 2A.

FIG. 3 is an assembled perspective view of the rotation driving unit, the up-down idler unit, the clamping unit, and the pickup unit of the lens assembly of FIG. 1.

FIG. 4A is an assembled perspective view of the rotary drive unit, the up-down idler unit, and the clamping unit of FIG.

4B is a front view of FIG. 4A.

5A is a perspective view of the clamping portion of FIG. 3.

FIG. 5B is a partially cutaway perspective view of FIG. 5A. FIG.

5C is a perspective view of a jaw positioned at the rear of the pair of jaws.

5D is a perspective view of the lever located at the rear of the pair of levers.

6A is a perspective view of the pickup portion of FIG.

Fig. 6B is a front view of Fig. 6A.

FIG. 7 is a perspective view of a position recognition unit of the lens assembly of FIG. 1. FIG.

<Description of the symbols for the main parts of the drawings>

100: transfer unit 101: transfer plate 200: main up-down drive unit

219: up-down block 300: rotary drive unit 311: bearing block

313: shaft 400: clamping portion 401: stem

403: holder body 403c: vertical through groove 403d: horizontal through groove

405: jaw holder 407: jaw 409: lever

411: jaw retainer block 411c: protruding jaw 413: spring holder

413b: clamping spring 419: chuck 500: pickup

501: pickup bar 502: pickup bar up-down driving unit 503: base

505: upper cylinder 507: upper cylinder bracket 511: stopper

513: pickup bar bracket 517: lower cylinder 521: seat

521a: seat portion 521b: rod portion 525: spring

600: position recognition unit 700: up-down idler unit 701: top block

703: idler rod 709: bottom block 713: position sensor

715: sensor dog

In order to achieve the above object, the present invention provides a pickup unit for picking up a lens to be assembled to a lens clamping position, a clamping unit which is transported, up and down, and rotated in a state of clamping a lens picked up at a lens clamping position by the pickup unit. And a transfer part for transferring the clamping part between the lens clamping position and the lens assembly work position, a main up-down driving part for up-down the clamping part transferred to the lens assembly work position, and a rotation driving part for rotating the clamping part for lens assembly. Provided is a lens assembly apparatus.

Preferably, the pickup unit includes a pickup bar for picking up the lens to be assembled and a pickup bar up-down driving unit for up-down the pickup bar, wherein the pickup bar-down driving unit is configured to move the pickup bar to the lens clamping position while the pickup bar picks up the lens. If the lens is clamped up one step, the pickup bar is up two steps with the pickup bar separated from the lens.

Preferably, the pickup bar is provided with a hollow along the longitudinal direction thereof, and is configured to be vacuum-suctioned through the hollow. The pickup bar up-down driving unit includes one stage of the pickup bar in a state in which the pickup bar vacuum-adsorbs the lens. The pickup bar is moved up two stages while the pickup bar releases vacuum suction to the lens.

Preferably, the pickup bar is vertically up and down through the clamping gap of the clamping portion.

Preferably, the pickup bar up-down driving unit includes a pickup bar bracket which is integrally up and down with the pickup bar, a lower driving source for up-down the pickup bar bracket, a stopper for limiting the upward displacement of the pickup bar bracket, and the stopper up-down It is provided with an upper drive source, wherein the pickup bar bracket is lifted by the lower drive source and stopped by the stopper to be in the first stage up state, in that state as the stopper is raised by the upper drive source by the lower drive source The pickup bar bracket is lifted up to the second level.

Preferably, the pickup up-down driving unit further includes a base installed to have a fixed position with respect to the clamping centerline of the clamping unit, and the lower drive source is a lower cylinder fixedly installed below the base, and the pickup bar The bracket is supported by the piston rod of the lower cylinder at the upper portion of the lower cylinder and is lifted by the expansion stroke of the lower cylinder and lifted off by the contracting stroke, and the upper driving source is fixedly installed on the upper portion of the base. The upper cylinder has a greater force than the lower cylinder, the stopper is fixed to the piston rod of the upper cylinder in the lower portion of the upper cylinder is raised by the contraction stroke of the upper cylinder and lowered by the expansion stroke.

Preferably, the piston rod of the lower drive source is provided with a seat for supporting the pickup bar bracket, the seat is coupled to the spring applying a downward elastic force to the pickup bar bracket.

In addition, the present invention, the clamping portion that is fed, up and down and rotated in the state of receiving the lens to be assembled, the lens is clamped, a position recognition unit installed to have a fixed position with respect to the clamping center line of the clamping portion, and the clamping portion of the lens A transfer unit for transferring between a clamping position and a lens assembly work position, a main up-down drive unit for up-down the clamping unit transferred to a lens assembly work position, and a rotation drive unit for rotating the clamping unit for lens assembly, By recognizing the position of the barrel to be assembled by the lens, the clamping unit provides a lens assembly device characterized in that for conveying by correcting the position error value of the barrel when conveyed to the lens assembly work position.

Preferably, the position recognition unit is a vision camera.

In addition, the present invention, the clamping part is fed, up and down and rotated in the state of receiving the lens to be assembled, the lens is clamped, a transfer part for transferring the clamping part between the lens clamping position and the lens assembly working position, and transfer to the lens assembly working position A main up-down driving unit for up and down the clamping unit and a rotation driving unit for rotating the clamping unit for assembling a lens, wherein the clamping unit is rotatably installed in the front-rear direction to a jaw holder and the jaw holder, A pair of levers arranged to face each other, a pair of jaws pin-connected with one end of the lever to interlock with the lever, and a clamping spring for providing the front and rear elastic force to the jaws so that the pair of jaws are clamped; , Is installed to be in contact with the other end of the lever, when the lever is rotated by pressing It provides a lens assembly device characterized in that it comprises a chuck to turn on to release the clamping jaw.

Preferably, the lens assembly device further includes a pair of spring holders and a pair of jaw retainer blocks, wherein the jaw holders comprise a pair of upper stems and a lower holder body, and the pair of stems Is formed to face in the left and right direction, the holder body has a vertical through groove formed to penetrate vertically and a horizontal through groove formed to penetrate in the front and rear direction at the bottom, the lever is installed rotatably on the holder body One end protrudes on the horizontal through groove, the other end protrudes on the gap between the pair of stems, and the jaw is interlocked with the lever in a state fitted on the horizontal through groove to move in the front and rear directions. The pair of spring holders are fixedly installed on the front and rear surfaces of the holder body, respectively, and the clamping springs However, the clamping spring protrudes and contacts the front and rear surfaces of the jaw, respectively, and the pair of jaw retainer blocks are fixedly installed along the left and right edges of the lower surface of the jaw holder, respectively, so that the jaws are not separated downward. It supports, but the jaw is provided to protrude upward so that the jaw is not backward or advanced more than a predetermined distance toward the center.

Preferably, the lens assembly device further comprises a pickup bar for picking up the lens to be assembled to the lens clamping position so that the clamp can clamp, the pickup bar is a gap between the pair of stems, the vertical of the holder body Vertically up and down through the gap between the through groove and the pair of jaws.

Preferably, the apparatus further includes an up-down idler unit installed on an up-down power transmission path between the main up-down driving unit and the clamping unit, and the up-down idler unit includes a top block and an idler rod suspended from the top block to move up and down. And a bottom block fixedly coupled to a lower end of the idler rod and fixedly coupled to an upper end of the jaw holder and integrally up and down with the idler rod and the jaw holder, when the lowering of the clamping part is restricted. Even if the top block descends a predetermined distance by the up-down power transmitted from the main up-down driving unit, the bottom block does not descend.

In addition, the present invention, the clamping part is fed, up and down and rotated in the state of receiving the lens to be assembled, the lens is clamped, a transfer part for transferring the clamping part between the lens clamping position and the lens assembly working position, and transfer to the lens assembly working position And a main up-down driving unit for up-down the clamping unit, a rotation driving unit for rotating the clamping unit for assembly of a lens, and an up-down idler unit installed on an up-down power transmission path between the main-up-down driving unit and the clamping unit, The part has a top block, an idler rod suspended up and down to the top block along an up-down power transmission path, and a bottom block fixedly coupled to a lower end of the idler rod, where the lowering of the clamping part is restricted. On the up-down power transmitted from the main up-down driving unit As a result, the bottom block does not fall even if the top block falls by a predetermined distance.

Preferably, a sensor dog is fixedly coupled to the assembly of the idler rod and the bottom block, and a position sensor detects a height of the sensor dog to detect an assembly error, that is, an up-down error of the clamping part.

Preferably, when an assembly error occurs, the clamping part loosens and removes the lens under assembly.

Preferably, the conveying unit includes a conveying drive means and a conveying plate conveyed by the conveying drive means, wherein the main up-down driving part includes an up-down driving source fixedly coupled to the conveying plate and an up-down block which is up-down by the up-down driving source. And a rotation drive unit fixedly coupled to the up-down block, a bearing block fixedly coupled to the up-down block, a shaft rotatably supported by the bearing block, and transmitting rotational power of the rotation drive source to the shaft. And a belt transmission mechanism, wherein the top block is fixedly coupled to the shaft, and the bottom block is fixedly coupled to the clamping portion.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall perspective view of a lens assembly according to a preferred embodiment of the present invention.

As shown in FIG. 1, the lens assembly of FIG. 1 includes a transfer part 100, a main up-down drive part 200, a rotation drive part 300, an up-down idler part 700, a clamping part 400, a pickup part 500, and a position. It comprises a recognition unit 600.

The transfer unit 100 performs a function of transferring the clamping unit 400 to the lens assembly work position, and includes a transfer driving means and a transfer plate 101.

FIG. 2A is a perspective view of the main up-down driving unit 200 of the lens assembly of FIG. 1, and FIG. 2B is a front view of FIG. 2A.

The main up-down driving unit 200 performs a function of up-down the clamping unit 400 transferred to the lens assembly work position by the transfer unit 100.

The up-down drive source holder 203 and the bearing holder 205 are fixedly coupled to the transfer plate 101.

When the up-down driving source 201 drives rotation, the up-down screw 209 rotates integrally by receiving the rotational power.

The stopper 207 limits the upward displacement of the motion conversion block 215.

The stopper 213 is fixedly coupled to the lower end of the up-down screw 209 and limits the downward displacement of the motion conversion block 215. The urethane block 211 serves to buffer the contact pressure between the stopper 213 and the motion conversion block 215.

The motion conversion block 215 has a female threaded hole in which an up-down screw 209 is rotatably inserted. Therefore, when the up-down screw 209 rotates, the motion conversion block 215 is up-down by the relative motion.

Since the moving block 217 is fixedly coupled to the motion conversion block 215 and the up-down block 219 is fixedly coupled to the moving block 217, when the motion conversion block 215 is up-down, the moving block 217 is accordingly. And up-down block 219 are also integrated up and down.

3 is an assembled perspective view of the rotation driving unit 300, the up-down idler unit 700, the clamping unit 400, and the pickup unit 500 of the lens assembly of FIG. 1. The assembly of FIG. 3 is fixedly coupled to the updown block 219 and thus is integrated up and down with the updown block 219.

FIG. 4A is a perspective view of the rotation driving unit 300, the up-down idler unit 700, and the clamping unit 400 of FIG. 3, and FIG. 4B is a front view of FIG. 4A. (The spring holder 413, the chuck 419, the chuck drive 417 and the chuck drive holder 415 are not shown)

The rotation driving unit 300 performs a function of rotating the clamping unit 400 to assemble the lens.

The rotation driving unit 300 includes a rotation driving source 301, a rotation driving source holder 303, a timing pulley 305, a belt 307, a timing pulley 307, a bearing block 311, and a shaft 313. .

The rotation drive source holder 303 and the bearing block 311 are fixedly coupled to the up-down block 219. The shaft 313 is rotatably supported by the bearing block 311.

The rotation drive source 301 is fixedly coupled to the rotation drive source holder 303. When the timing pulley 305 is rotated according to the rotational drive of the rotation driving source 301, the rotational power is sequentially transmitted to the belt 307, the timing pulley 309, and the shaft 313.

The up-down idler unit 700 includes a top block 701, an idler rod 703, a ball retainer 705, a spring 707, and a bottom block 709. In addition, the sensor bracket 711, the position sensor 713 and the sensor dog 715 is provided.

The top block 701 is fixedly coupled to the lower end of the shaft 313. The idler rod 703 is suspended on the top block 701 so as to be movable up and down. The ball retainer 705 is fitted to the upper outer circumference of the idler rod 703. The ball retainer 705 is supported by the spring 707. Therefore, the top block 701 moves up and down along the idler rod 703 through the rolling motion of the ball retainer 705.

The bottom block 709 is fixedly coupled to the lower end of the idler rod 703.

Therefore, when the lowering of the clamping unit 400 is limited, even if the top block 701 is lowered by a predetermined distance by the up-down power transmitted from the main up-down driving unit 200, the bottom block 709 does not lower.

The bottom end of the idler rod 703 is fixedly coupled with the sensor dog 715. On the other hand, the sensor bracket 711 is fixedly coupled to the bearing block 311, the position sensor 713 is fixedly coupled to the sensor bracket 711. The position sensor 713 detects the height of the sensor dog 715 and detects an updown error of the sensor dog 715. When an up-down error of the sensor dog 715, that is, an up-down error of the clamping unit 400 occurs, the clamping unit 400 releases and removes the lens that is being assembled.

In the present embodiment, the up-down idler unit 700 shows a structure coupled to the upper portion of the clamping unit 400, but is not necessarily limited thereto, and the up-down idler unit 700 is not limited to the up-down idler unit 200 and the up-down idler unit 400. It can be installed at various locations on the power transmission path.

The up-down idler unit 700 performs the following two functions.

First, when the assembly failure, for example, a jam (jam) between the lens and the barrel occurs and the clamping unit 400 is no longer lowered, it serves to protect the device. In this case, as described above, the clamping part 400 is to release and remove the lens that is being assembled.

The second performs the function of enabling lens assembly. The lens and the barrel are assembled by screwing. Therefore, in order to assemble the lens to the barrel, it must be moved downward while rotating the lens.

To this end, when the transfer of the clamping unit 400 to the lens assembly working position is completed, the up-down driving source 201 moves the up-down block 219 downward to the minimum height. However, before the up-down block 219 is lowered to the minimum height, the lens contacts the barrel and cannot be lowered to the minimum height. That is, the bottom block 709 accumulates the ability to descend by that distance instead of descending smaller than the top block 701. In this state, when the clamping part 400 is rotated, the lens can be lowered while rotating along the thread of the barrel.

The chuck drive source holder 415 is fixedly coupled to the bearing block 311, and the chuck drive source 417 is fixedly coupled to the chuck drive holder 415. The chuck 419 is installed to be in press contact with the top of the lever 409.

"L" in Fig. 4B represents a lens.

5A is a perspective view of the clamping portion 400 of FIG. 3, FIG. 5B is a partially cutaway perspective view of FIG. 5A, FIG. 5C is a perspective view of a jaw 407 located at the rear, and FIG. 5D is a lever (shown at the rear). 409).

As shown, the clamping unit 400 includes a jaw holder 405, a pair of levers 409, a pair of jaws 407, a pair of spring holders 413, and a pair of jaw retainer blocks 411. ) In addition, although the chuck 419, the chuck drive source 417 and the chuck drive holder 415 is included, not shown in Figures 5a and 5b.

The jaw holder 405 consists of a pair of stems 401 at the top and a holder body 403 at the bottom.

The pair of stems 401 are formed to face in the left and right directions. The upper end of the stem 401 is fixedly coupled to the bottom block 709. The holder body 403 has a vertical through groove 403c formed to penetrate vertically and a horizontal through groove 403c formed to penetrate in a front-rear direction at a lower end thereof.

The lever 409 is provided with a pair of mutually opposing in the front-back direction. The lever 409 is rotatably installed in the front and rear direction on the holder body 403. For this purpose, the pin 423 has a pin insertion hole 403b of the holder body 403 and a pin insertion hole 409a of the lever 409. ) Are commonly fitted. Thus, lever 409 is rotated about pin 423.

The lever 409 passes through the vertical through groove 403c of the holder body 403, the upper end of which is projected to the upper part of the holder body 403, and is positioned between the pair of stems 401, and the lower end of the holder body 403 It protrudes on the horizontal through groove 403c of 403. The lower end of the lever 409 is provided with a long hole 409b (see Fig. 5D).

A jaw 407 is provided on the horizontal through groove 403c of the holder body 403 to be movable in the front-rear direction. The jaws 407 are provided in pairs facing each other in the front-rear direction. The lower end of the lever 409 is positioned in the horizontal through groove 407c of the jaw 407, and the lower end of the lever 409 is pin-coupled with the jaw 407. To this end, a pin 425 is commonly inserted into the pin insertion hole 407b of the jaw 407 and the long hole 409b of the lever 409. Therefore, the jaw 407 moves in the front-rear direction in conjunction with the forward-backward rotational movement of the lever 409.

Spring holder 413 is fixedly coupled to the front and rear of the holder body 403, respectively. To this end, a screw is commonly inserted into the screw hole 413a of the spring holder 413 and the screw hole 403a of the holder body 403. The spring holder 413 has a clamping spring 413b that projects toward the front and rear of the jaw 407. The end of the protruding clamping spring 413b is in contact with the jaw 407 while being fitted into the concave groove 407a of the jaw 407. The clamping spring 413b exerts front and rear elastic force on the jaw 407 such that the pair of jaws 407 are clamped.

The jaw retainer block 411 is fixedly coupled along the left and right edges of the lower surface of the holder body 403 to support the jaw 407 so as not to be separated downward. To this end, a screw is commonly inserted into the screw hole 411a of the jaw retainer block 411 and the screw hole 403e of the holder body 403.

The jaw retainer block 411 has an insertion jaw 411b and a protruding jaw 411c protruding upward from the upper surface thereof. The insertion jaw 411b allows the jaw retainer block 411 to be fixed at the correct position with respect to the holder body 403. The protruding jaw 411c prevents the jaw 407 from being biased to either side due to the difference in the spring force of the clamping springs 413b at both front and rear sides. That is, the projection jaw 411c prevents the jaw 407 from moving backward or forward more than a predetermined distance toward the center.

Look at the interlocking relationship of the clamping unit 400.

The clamping state of the clamping part 400 is achieved by the clamping spring 413b. The clamping springs 413b push the jaws 407 toward the center to bring them closer together. At this time, the lower ends of the pair of levers 409 coupled to the jaws 407 and pins are also rotated to be close to each other toward the center. Therefore, the upper ends of the pair of levers 409 are opened in the front-rear direction.

On the contrary, in order to be in the de-clamping state of the clamping part 400, it is achieved by the chuck 419. When the chuck 419 is retracted and the upper end of the lever 409 is pressed toward the center, the lever 409 rotates about the pin 423. At this time, the lower ends of the pair of levers 409 are opened in the front-rear direction. Accordingly, the jaw 407, which is pin-coupled with the lower end of the lever 409, also opens in the front-rear direction against the spring force of the clamping spring 413b.

6A is a perspective view of the pickup 500 of FIG. 3, and FIG. 6B is a front view of FIG. 6A.

The pickup unit 500 picks up the lens to be assembled from the lens tray to the clamping position. The pickup unit 500 includes a pickup bar 501 for picking up a lens to be assembled and a pickup bar up-down driving unit 502 for up-down the pickup bar 501.

The pickup bar 501 picks up the lens to be assembled to the lens clamping position so that the clamping unit 400 can clamp the lens to be assembled. The pickup bar 501 has a hollow 501a therein along its longitudinal direction. A suction hose is connected to the upper hollow 501a of the pickup bar 501 to vacuum-adsorb the lens to the lower end of the pickup bar 501 through the hollow 501a.

The pickup bar 501 is vertically up and down through the clamping gap of the clamping part 400, that is, the gap between the front and rear pair of jaws 407. Specifically, the pickup bar 501 includes a hollow of the timing pulley 309, a hollow 313a of the shaft 313, a hollow of the top block 701, a hollow of the bottom block 709, and a pair of left and right stems. The gap between the 401, the vertical through groove 403c of the holder body 403, and the gap between the front and rear pair of jaws 407 are configured to protrude below the jaw 407.

The pickup bar 501 protrudes below the jaw 407 in the down state to suck the lens under vacuum. The lens is then stepped up so that the lens is between the jaws 407, in which the jaws 407 clamp the lens. The pickup bar 501 then releases vacuum adsorption on the lens and is up two stages to separate it from the lens.

The pickup up-down driving unit 502 includes a base 503, an upper cylinder 505, an upper cylinder bracket 507, a road block 509, a stopper 511, a road block 515, a lower cylinder 517, and a guide. A rod 519 is made.

The pickup bar bracket 513 is fixedly coupled with the pickup bar 501 to be up and down integrally.

The base 503 is fixedly coupled to the bearing block 311. The base 503 has a through hole 503a penetrated in the front-rear direction. The pickup bar bracket 513 is inserted into the through groove 503a so as to be movable upward and downward, and receives the up-down driving force of the lower cylinder 517 from the front of the base 503, and transmits it to the rear pickup bar 501.

The upper cylinder bracket 507, the road block 509, the road block 515 and the lower cylinder 517 is fixedly coupled to the base 503.

The upper cylinder 505 is fixedly coupled to the upper cylinder bracket 507. The upper cylinder 505 performs a function of up and down the stopper 511. The stopper 511 is fixedly coupled to the piston rod of the upper cylinder 505, raised by the contraction stroke of the upper cylinder 505, and lowered by the expansion stroke. The stopper 511 serves to limit the upward displacement of the pickup bar bracket 513.

The lower cylinder 517 serves to up and down the pickup bar bracket 513. The pickup bar bracket 513 is supported by the piston rod of the lower cylinder 517 to be lifted by the expansion stroke of the lower cylinder 517 and lifted off by the contraction stroke.

The upper end of the piston rod of the lower cylinder 517 is provided with a seat 521. The seat 521 is formed of a lower seat portion 521a and an upper rod portion 521b. The rod portion 521b is inserted into the through hole 513a of the pickup bar bracket 513 so as to be movable upward and downward. The outer diameter of the seat portion 521a is larger than the diameter of the lower end of the through hole 513a of the pickup bar bracket 513, and may support the pickup bar bracket 513.

The spring pocket 523 is fixedly coupled to the upper end of the rod portion 521b. The through hole 513a of the pickup bar bracket 513 is provided with a stage, and a spring 525 is interposed between the stage and the spring pocket 523. When the piston rod of the lower cylinder 517 is down to the lowest position, the pickup bar 501 does not come down to the position corresponding to the lens. That is, the seat 521a of the seat 521 and the pickup bar bracket 513 are spaced apart from each other. In this state, the spring 525 applies a downward elastic force to the pickup bar bracket 513 so that the pickup bar 501 may be in close contact with the lens.

The lower cylinder 517 has a smaller force than the upper cylinder 505. In the state where the pickup bar bracket 513 is down, the lower cylinder 517 raises the pickup bar bracket 513 by transmitting a driving force of sufficient magnitude for the second stage up to the pickup bar bracket 513. However, the pickup bar bracket 513 is raised to the first up state, and then stopped at the stopper 511 to maintain the state. In this state, when the upper cylinder 505 raises the stopper 511 by the second up height, the pickup bar bracket 513 is naturally raised to the second up height by the force to be lifted by the pickup bar bracket 513. You lose.

The guide rod 519 is fixedly coupled to the road block 509 and the road block 515. The guide rod 519 guides the up-down movement of the stopper 511 and the pickup bar bracket 513. For this purpose, the guide rod 519 is provided at the stopper 511 and the pickup bar bracket 513 at a corresponding position. ) Is provided with a through hole.

In the illustrated embodiment, the pickup 500 is fixedly coupled to the up-down block via the bearing block 311, but the embodiment is not limited thereto, and a fixed position with respect to the clamping center line of the clamping unit 400 is provided. It may be installed to have. That is, the embodiment is also fixedly coupled to the transfer plate 101.

7 is a perspective view of the position recognition unit 600 of the lens assembly of FIG.

In the illustrated embodiment, the position recognition unit 600 is shown to be fixedly coupled to the transfer plate 101, but is not necessarily limited thereto, and may be installed to have a fixed position with respect to the clamping center line of the clamping unit 400. That is, it is also possible to be fixedly coupled to the up-down block 219 to be transferred and up and down integrally with the clamping unit 400.

As the position recognition unit 600, for example, a vision camera is used. The position recognition unit 600 recognizes the position of the barrel in which the lens is to be assembled and is not in the correct position. When the clamping unit 400 is transferred to the lens assembly work position, the position correction unit 600 corrects and transfers the position error of the barrel. .

So far, the lens assembly apparatus according to the preferred embodiment of the present invention was examined by dividing each component. Hereinafter, it looks at the center of the mutual assembly structure and interlocking relationship of each component.

The transfer plate 101 is fixedly coupled to the main up-down driving unit 200 and the position recognition unit 600 to be transferred integrally.

In the up-down block 219 of the main up-down driving unit 200, the rotary driving unit 300, the up-down idler unit 700, the clamping unit 400, and the pickup unit 500 are directly or indirectly fixed and coupled up and down.

Therefore, the main up-down driving unit 200, the position recognition unit 600, the rotation driving unit 300, the up-down idler unit 700, the clamping unit 400, and the pickup unit 500 are naturally transferred integrally.

The lens assembling apparatus of this embodiment is a device which can, for example, pick up and transfer a lens from a lens tray (not shown) and assemble it to a corresponding barrel (not shown) among the barrels on a single mother plate on which a plurality of barrels are assembled. Let's look at the order of its operation.

When the immediately preceding assembly operation is completed, the pickup bar 501 is in a two-stage up state, the chuck 419 is in a lever 409 pressed state, and the jaw 407 is in an open state.

After the last assembly operation, the transfer plate 101 is transferred by a predetermined value. After the transfer, when the position recognition unit 600 is exactly at the top of the barrel to be newly assembled lens, the barrel is in the correct position on the mother plate. However, if not, the position error value is stored in the controller (not shown).

Then, the conveying plate 101 is transferred so that the clamping unit 400 is in the lens clamping position.

Then, after the pickup bar 501 is pulled down, the lens is vacuum suctioned to pick up.

Then, the pickup bar 501 is moved up one step, and the chuck 419 is opened in that state. When the chuck 419 is opened, the jaw 407 clamps the lens by the elastic force of the clamping spring 413b.

Then, the vacuum adsorption of the pickup bar 501 is released to make it up two stages.

Then, the conveying plate 101 is transferred so that the clamping unit 400 is at the lens assembly work position. In this case, the clamping part 400 is corrected by the stored barrel position error value so that the clamping unit 400 is located at the correct position directly above the barrel.

Then, the main up-down driving unit 200 lowers the up-down block 219 to the lowest position. At this time, the clamping unit 400 is not down to the lowest position as described above.

Then, the rotation driving unit 300 rotates the clamping unit 400. When the clamping part 400 is rotated, the downward movement is performed simultaneously with the rotation.

At this time, the position sensor 713 senses the height of the sensor dog 715, and monitors whether the clamping unit 400 is lowered normally, otherwise the rotation drive unit 300 stops rotating and instead reverse the clamping unit 400 Rotate to disassemble lens under assembly. The disassembled lens is removed.

When the assembly process is normally completed, the chuck 419 is switched to the lever 409 pressed state and the clamping portion is separated from the lens.

Then, the main up-down driving unit 200 ups the up-down block 219.

According to the above configuration, the present invention has an effect that can provide an automatic lens assembly device excellent in precision and workability.

Claims (8)

A pickup for picking up the lens to be assembled to the lens clamping position; A clamping part which is transported, up and down in a state of clamping a lens picked up at a lens clamping position by the pickup part; A transfer part for transferring the clamping part between a lens clamping position and a lens assembly work position; A main up-down driving unit for up-down the clamping unit transferred to the lens assembly work position; Lens assembly apparatus characterized in that it comprises a rotary drive for rotating the clamping portion for lens assembly. The method of claim 1, The pickup section includes a pickup bar for picking up a lens to be assembled and a pickup bar up-down driving unit for up-down the pickup bar, The pickup bar is provided with a hollow along the longitudinal direction is configured to be vacuum suction through the hollow, The pickup bar up-down driving unit is configured to lift up the pickup bar to the lens clamping position by one step while the pickup bar is vacuum-collected and picked up by a lens, and when the lens is clamped, the pickup bar releases vacuum suction to the lens and is separated from the lens. Lens pickup apparatus, characterized in that up to two steps of the pickup bar in the state. According to claim 2, The pickup up-down driving unit, A pickup bar bracket which is up and down integrally with the pickup bar; A lower drive source for up and down the pickup bar bracket, A stopper for limiting upward displacement of the pickup bar bracket; It is provided with an upper drive source for up and down the stopper, The pickup bar bracket is lifted by the lower drive source and stopped by the stopper to be in the first step up state. In that state, the pickup bar bracket is lifted by the lower drive source as the stopper is raised by the upper drive source. The lens assembly apparatus characterized by the above-mentioned. A clamping part which is supplied with the lens to be assembled and is transferred, up and down while the lens is clamped, A vision camera installed to have a fixed position with respect to a clamping center line of the clamping part; A transfer part for transferring the clamping part between a lens clamping position and a lens assembly work position; A main up-down driving unit for up-down the clamping unit transferred to the lens assembly work position; It is provided with a rotary drive for rotating the clamping portion for lens assembly, And recognizing the position of the barrel on which the lens is to be assembled by the vision camera, and then correcting and conveying the position error value of the barrel when the clamping unit is transferred to the lens assembly work position. A clamping part which is supplied with the lens to be assembled and is transferred, up and down while the lens is clamped, A transfer part for transferring the clamping part between a lens clamping position and a lens assembly work position; A main up-down driving unit for up-down the clamping unit transferred to the lens assembly work position; It is provided with a rotary drive for rotating the clamping portion for lens assembly, The clamping portion With jaw holder, A pair of levers rotatably installed in the jaw holder in a front-rear direction and arranged to face each other in a front-rear direction; A pair of jaws pinned to one end of the lever to interlock with the lever, A clamping spring for providing an elastic force forward and backward to the jaw such that the pair of jaws is clamped; And a chuck installed at the other end of the lever so as to be in contact with the lever and rotating the lever to press the jaw so that the jaw is released from the clamping state. The method of claim 5, The lens assembly device is further provided with a pair of spring holder and a pair of retainer block, The jaw holder is composed of a pair of stems at the top and a holder body at the bottom, and the pair of stems are formed to face in the left and right direction, and the holder body is vertically penetrated through the vertically formed grooves and the bottom at the front and rear. It has a horizontal through groove formed to penetrate in the direction, The lever is rotatably installed on the holder body, one end is formed to project on the horizontal through groove, the other end is formed on the gap between the pair of stems, The jaw is installed to be movable in the front-rear direction in conjunction with the lever in the state fitted on the horizontal through groove, The pair of spring holders are fixed to the front and rear of the holder body, respectively, and provided with the clamping spring, the clamping spring protrudes to contact the front and rear of the jaw, respectively, The pair of jaw retainer blocks are fixedly installed along the left and right edges of the lower surface of the jaw holder, respectively, to support the jaws so as not to be separated downward, but to protrude the jaws so that the jaws are not moved backward or forward more than a predetermined distance toward the center. Lens assembly apparatus characterized in that it is provided to protrude upward. A clamping part which is supplied with the lens to be assembled and is transferred, up and down while the lens is clamped, A transfer part for transferring the clamping part between a lens clamping position and a lens assembly work position; A main up-down driving unit for up-down the clamping unit transferred to the lens assembly work position; Rotating drive unit for rotating the clamping unit for lens assembly An up-down idler portion provided on an up-down power transmission path between the main up-down driving portion and the clamping portion, wherein the up-down idler portion is along an up-down power transmission path, Top Block, An idler rod suspended from the top block so as to be movable upward and downward; With a bottom block fixedly coupled to the lower end of the idler rod, When the lowering of the clamping part is limited, the bottom block does not fall even if the top block falls by a predetermined distance by the up-down power transmitted from the main up-down driving unit. The method of claim 7, wherein The sensor dog is fixedly coupled to the idler rod and the bottom block assembly, Detect assembly error by detecting the height of the sensor dog, If the assembly error occurs, the clamping unit lens assembly device, characterized in that for removing the lens being assembled.