KR102658975B1 - Lens Unit Inspection System - Google Patents

Abstract

The present invention efficiently performs the flipping operation of the lens unit during the lens unit inspection process, minimizes the transfer trajectory of the lens unit for inspection of the lens unit, minimizes process gaps for inspection, and This relates to a lens unit inspection system that can simplify configuration.

Description

Lens Unit Inspection System

The present invention relates to a lens unit inspection system. More specifically, the present invention relates to a lens unit inspection system that can minimize process gaps for inspection of lens units and simplify the configuration of the system.

The latest mobile electronic products are equipped with camera modules to provide shooting functions, and these electronic products are becoming smaller or thinner. Accordingly, the size of the lens unit provided in the camera module is also becoming smaller, and due to its characteristics, the lens unit is subject to external inspection to determine whether the lens unit is damaged or physically damaged, optical inspection to check whether it has normal optical characteristics, and lens unit. Various tests, such as coating inspection, can be performed to determine whether the surface coating of the unit is normal.

In addition, such a lens unit is so small that it may deviate from the tray's loading groove or be lost due to a small external shock or vibration during the process of loading and transporting it on a tray. Therefore, the lens unit supply unit is loaded to prevent this. It may be provided in the form of a combined tray in which a base tray is provided with a plurality of grooves and a lens unit is loaded in each loading groove, and a tray cover that covers the base tray to prevent the lens unit from being separated.

Therefore, the lens unit inspection system removes the tray cover from the combination tray in which the fine-sized lens unit is accommodated, and changes the direction of the lens unit so that the direction of the lens unit loaded on the tray matches the inspection direction of the lens unit in the inspection device. Each lens unit is stably picked up and inspected on an inspection device. According to the inspection results, the lens unit is loaded onto the base tray that makes up the combination tray, and the tray cover is reinstalled to enable export as a combination tray, while simplifying the configuration and processing. It is not easy to configure an inspection system that minimizes gaps.

The present invention efficiently performs the flipping operation of the lens unit during the supply, inspection, and delivery process of the lens unit, minimizes the transfer trajectory of the lens unit for inspection of the lens unit, and minimizes process gaps for inspection. The problem to be solved is to provide a lens unit inspection system that can simplify the system configuration.

In order to solve the above problem, the present invention separates the base tray on which the lens unit to be inspected is loaded, the tray supply unit in which a combination tray with a tray cover mounted on the top is stacked, and the combination tray supplied from the tray supply unit, A tray picker capable of transporting in the X-axis direction to pick up the combination tray or the tray cover, a loading picker capable of transporting in the The lens units picked up and transferred by the loading picker are loaded, a flipping operation is possible to flip the loaded lens units upside down, and a sheet block is provided to be movable in the At least one lens unit inspection unit for inspecting a target lens unit, picking up a lens unit to be inspected loaded on the sheet block and transferring it to the lens unit inspection unit, or transferring the lens unit inspected in the lens unit inspection unit to the sheet block A test picker capable of transporting in the X- and Y-axis directions, and an unloading device capable of transporting in the It is possible to provide a lens unit inspection system including a picker and a tray unloading unit for loading and unloading the lens unit picked up by the unloading picker.

In addition, the tray picker is provided with an adsorption unit for adsorbing and separating the tray cover from the combination tray and a gripper for picking up and transferring the base tray from which the tray cover has been separated from the combination tray, and the tray picker adsorbs. In the process of separating the upper surface of the tray cover from the combination tray, the unit is provided on a side of the base tray so that the base tray is separated from the tray cover and has a structure that can advance and retreat from the tray, and It may further include a forward-backward clamp for clamping.

In this case, in the process of the loading picker picking up the lens unit loaded on the base tray, the tray cover is picked up and rotated to support the edge of the base tray in order to fix the base tray with the forward-backward clamp. It may further include a rotary clamp.

In addition, the sheet block is provided with a loading groove in which the lens unit is loaded, a rotating member capable of rotating 180 degrees, and a fixing member having a plurality of loading grooves in which the lens unit is flipped up and down and loaded when the rotating member rotates 180 degrees. And, the loading picker loads the lens unit to be inspected into the loading groove of the rotating member of the sheet block, and the test picker rotates the rotating member and loads the lens unit in a flipped state in the loading groove of the fixing member. can be picked up.

Here, the loading groove provided in the rotating member of the sheet block is connected to a pneumatic flow path for applying negative pneumatic pressure, so that negative pneumatic pressure can be applied when the rotating member is rotated to deliver the lens unit to the fixing member. there is.

In addition, the sheet block is flipped once before being delivered to the lens unit inspection unit to change the loading direction of the lens unit, and after the lens unit inspection is completed, it is loaded on the sheet block and flipped once again. Thus, the loading direction of the lens unit can be changed.

Additionally, the loading direction of the lens units supplied from the tray supply unit may coincide with the loading direction of the lens units loaded on the tray delivery unit.

In this case, a plurality of lens unit inspection units are provided, and two or more types of inspections can be performed.

In addition, the test picker is provided with two pickup units, where one pickup unit picks up the lens unit to be inspected loaded on the sheet block and transfers it to the lens unit inspection section, and the other pickup unit picks up the lens unit to be inspected loaded on the sheet block and transfers it to the lens unit inspection section. The lens unit that has been inspected is picked up and transferred to the sheet block, and the transfer process of the lens unit to be inspected and the lens unit that has been inspected from the sheet block can be carried out together.

Here, the tray discharge unit is a tray magazine stacked in a combined tray state in which a tray base and a tray cover in which lens units will be stored according to the inspection results are combined, and a first tray on which good lens units are loaded according to the inspection results of the lens unit inspection unit. , a second tray on which defective or reworked lens units are loaded, a tray cover storage section where tray covers separated from the combination tray are stacked, and the combination tray is picked up from the tray magazine and placed on the first tray or the second tray. The base tray is placed, and the tray cover may include a tray picker that delivers the tray cover to the tray cover storage unit.

In addition, in order to solve the above problem, the present invention, in the lens unit inspection method of the lens unit inspection system described above, includes a combination tray having a tray base on which the lens unit to be inspected is loaded and a tray cover mounted on the tray base. supplying, separating the tray cover from the combined tray by adsorbing the tray cover with a tray picker, individually picking up the lens units loaded on the tray base with a loading picker and placing them in a loading groove of a sheet block that can rotate up and down. Step of stacking, rotating the sheet block 180° to invert the vertical direction of the lens unit, then picking up the inverted lens unit by a test picker and transferring it to the lens unit inspection unit, testing the lens unit for which the lens unit inspection has been completed. Picking up with a picker and loading it into the loading groove of the sheet block, rotating the sheet block 180° to reverse the vertical direction of the lens unit, and then moving the sheet block to the unloading picker, and the unloading picker is A lens unit inspection method may be provided including the step of sorting and loading the lens units on a tray according to the lens unit inspection results.

According to the lens unit inspection system according to the present invention, the process of automatically separating the tray cover from the combined tray on which the tray cover is mounted on the tray on which the lens unit is loaded can be stably performed.

In addition, according to the lens unit inspection system according to the present invention, shock or vibration applied by the pickup unit, etc. can be alleviated by stably supporting the base tray in the process of picking up the lens unit loaded on the base tray.

In addition, according to the lens unit inspection system according to the present invention, it is possible to selectively perform a flipping operation of the lens unit to be inspected during the lens unit inspection process.

Additionally, according to the lens unit inspection system according to the present invention, the transfer trajectory of the lens unit for inspection of the lens unit can be minimized.

Additionally, according to the lens unit inspection system according to the present invention, process gaps between lens unit inspection processes can be minimized.

Figure 1 shows a top view of a lens unit inspection system according to the present invention.
Figure 2 shows a tray picker used in the tray supply device of the lens unit supply part of the lens unit inspection system according to the present invention to separate the tray cover from the base tray on which the lens unit to be inspected is loaded and the combination tray on which the tray cover is mounted. A front view in a lowered state is shown.
FIG. 3 shows a front view of a state in which the tray cover of FIG. 2 is lowered and the tray cover can be separated from the combined tray by the forward-backward clamp of the tray supply device.
FIG. 4 shows a front view of a state in which the tray cover is removable from the combination tray of FIG. 3 and the tray cover is adsorbed by a tray picker, thereby separating the tray cover and the base tray.
Figure 5 shows a state in which the rotary clamp of the tray supply device is opened before the tray picker is lowered to separate the tray cover from the combined tray.
Figure 6 shows a state in which the tray cover is separated from the combined tray, picked up and raised, and the rotary clamp of the tray supply device is rotated to fix the base tray.
Figure 7 shows a perspective view of a sheet block with a flipping function constituting the lens unit transfer part of the lens unit inspection system according to the present invention.
Figure 8 shows a side view of the sheet block of Figure 7;
Figures 9 and 10 show a process of placing the lens unit to be inspected on the rotating member of the sheet block of the lens unit transfer unit by the loading picker of the lens unit supply unit.
Figures 11 to 13 show a process of rotating the rotating member of the sheet block of the lens unit transfer unit on which the lens unit to be inspected is mounted, thereby inverting and mounting the lens unit to be inspected on the fixing member of the sheet block.
Figures 14 and 15 show the process of picking up the lens unit to be inspected mounted on the fixing member of the sheet block by a test picker.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure will be thorough and complete, and so that the spirit of the invention can be sufficiently conveyed to those skilled in the art. Like reference numerals refer to like elements throughout the specification.

Figure 1 shows a top view of a lens unit inspection system 1 according to the present invention.

The lens unit inspection system (1) according to the present invention includes a tray supply unit in which a base tray loaded with a lens unit to be inspected and a combination tray with a tray cover mounted on the top are stacked, and the combination tray is separated from the tray supply unit. , the tray picker 120 is provided to pick up and transport the combined tray or tray cover in the X-axis direction, and can be transported in the A loading picker 110 provided, the lens unit picked up and transferred by the loading picker 110 is loaded, and a sheet block ( 210), at least one lens unit inspection unit 300, 400 for inspecting a lens unit to be inspected that is upside down, picking up the lens unit to be inspected loaded on the sheet block and transferring it to the lens unit inspection section or the lens unit inspection section A test picker 230 capable of transporting the lens unit inspected in the An unloading picker 510 capable of transporting the unit in the It provides a lens unit inspection system (1) including.

The lens unit inspection system (1) according to the present invention picks up a lens unit from a tray on which a lens unit to be inspected is loaded, inspects it in the lens unit inspection device (310, 410), and then places the inspected lens unit on a tray according to the inspection results. It is a system for loading and unloading.

Therefore, the lens unit inspection system 1 according to the present invention includes a lens unit supply unit 100 in which the lens unit to be inspected is picked up and supplied, and a lens unit inspection unit 300 in which the lens unit supplied from the lens unit supply unit 100 is inspected. , 400) and a lens unit delivery unit 500 that loads the lens units inspected in the lens unit inspection units 300 and 400 into different trays according to the inspection results and exports them.

And, the process of supplying the lens unit from the lens unit supply unit 100 to the lens unit inspection unit 300, 400 and the lens unit being exported from the lens unit inspection unit 300, 400 to the lens unit delivery unit 500. In the process, process gaps due to the inspection process of the lens unit inspection devices (310, 410) that make up the lens unit inspection units (300, 400) are minimized, and the lens unit to be inspected is flipped up and down to meet the inspection conditions of the inspection device. It is provided with a lens unit transfer unit 200.

The lens unit inspection system (1) according to the present invention may be equipped with two identical lens unit inspection devices (310, 410) in the lens unit inspection section (300, 400) where the lens unit is inspected in order to increase the UPH of the inspection process. , the number of lens unit inspection devices 310 and 410 can be increased or decreased.

A lens unit inspection system (1) according to the present invention comprising the lens unit supply unit 100, the lens unit inspection unit 300, 400, the lens unit delivery unit 500, and the lens unit transfer unit 200. The configuration will be reviewed in detail with reference to Figure 1.

The lens unit supply unit 100 includes a tray supply device 130 in which trays containing the lens units to be inspected are stacked, and a tray unloading area 140 in which empty trays in which the lens units to be inspected are picked up are stacked and shipped out. They can be provided side by side in the X-axis direction.

Additionally, the tray supply device 130 may be provided by stacking combination trays accommodating lens units to be inspected. The latest mobile electronic products are equipped with camera modules to provide shooting functions, and these electronic products are becoming smaller or thinner. Accordingly, the size of the lens unit provided in the camera module is also becoming smaller.

These lens units must be determined to be defective before being assembled into a camera module, and such lens units can be inspected using lens unit inspection devices 310 and 410. Inspection of the lens unit includes an external inspection to determine whether the lens unit is damaged or physically damaged, an optical inspection to check whether it has normal optical characteristics, and a coating inspection to determine whether the surface coating of the lens unit is normal. It may be, etc.

Such a lens unit is so small that it may deviate from the tray's loading groove or be lost due to a small external shock or vibration during the process of loading and transporting it on a tray. Therefore, the lens unit supply unit 100 is designed to prevent this. For this purpose, a combination tray is used in which a base tray is provided with a plurality of loading grooves and a lens unit is loaded in each loading groove, and a tray cover that covers the base tray to prevent the lens unit from being separated is used.

Therefore, the tray supply device 130 of the lens unit supply unit 100 is equipped with a stack of combination trays containing the lens units, and in order to pick up the lens unit to be inspected from the combination tray, the tray cover is first removed from the combination tray. After being separated and picked up by the picker 120, a lens unit pickup process is performed by the loading picker 110.

A tray unloading area 140 is provided on one side of the tray supply device 130. This is an area where the tray cover separated from the combined tray of the tray supply device 130 and the base tray on which the lens unit has been picked up are stacked and taken out.

The tray picker 120 separates the tray cover from the combined tray mounted on the top of the tray supply device 130, picks it up using a suction method, transports it in the X-axis direction, places it in the tray unloading area 140, and loads it. After picking up the base tray on which all lens units to be inspected are picked up by the picker 110 and the tray cover covering the base tray on which the lens units to be worked on are loaded, the tray cover is gripped together with a gripper and then transferred to the tray unloading area 140. Transfer to and stack. In this way, the cover of the base tray on which the next lens unit to be worked is loaded is also removed, and the loading picker can continuously carry out the process of delivering the lens unit loaded on the base tray to the sheet block.

If this process is repeated, the combination trays containing the lens units can be stacked and exported from the tray unloading area 140.

And at this time, the tray picker is equipped with a tray gripper to pick up the adsorption unit and the combination tray together so that the tray cover can be adsorbed and separated from the combination tray. Therefore, the tray cover can be adsorbed and separated from the combined tray through the adsorption unit.

In the present invention, in order to more easily remove the tray cover from the combination tray, the upper surface of the tray cover is adsorbed by an adsorption unit, and the base tray has a structure capable of advancing and retracting, and may further be provided with a forward-and-backward clamp for clamping the base tray.

In addition, in the state of clamping with a forward-backward clamp, a rotating clamp supporting the edge of the base tray can be further provided to stably support the tray so that the position of the tray does not shake during the process of picking up the lens unit in the tray.

For this purpose, the forward and backward clamps are provided to face each other on the sides of the tray and can firmly support the tray by being able to advance and retreat from the tray. The rotary clamp includes a clamp driving member that can be driven by the principle of a lever and prevents the tray from shaking. I can support you without you.

The tray picker 120 is provided to be transported in the X-axis direction by the tray picker transfer unit 125, and the loading picker 110 is moved along the Directional transfer is possible.

The gantry-structured transfer unit may be configured in a cantilever shape and may be provided with a support guide 119 to prevent the end from sagging.

And, at the lower part of the transfer area of the loading picker 110, an upward vision unit 170 and a pickup unit 111 of the loading picker for upward imaging inspection of the lens unit picked up by the pickup unit 110 of the loading picker 110. ) may be provided with an alignment unit 160 including an alignment jig and an alignment table for alignment.

Accordingly, the loading picker 110 can sequentially pick up lens units loaded in any loading groove of the base tray where the lens units are accommodated.

The loading picker 110 may be provided with a plurality of pickup units. In the embodiment shown in FIG. 1, the loading picker 110 includes two pickup units 111 arranged side by side in the Y-axis direction. However, the number and installation direction of the pickup units 111 provided in one loading picker 110 may be varied.

The loading picker 110 may be equipped with a vision unit 113 for downward imaging inspection in addition to the pickup unit 111. A detailed description of the process of removing and picking up the tray cover by the tray picker 120 will be postponed.

The lens unit to be inspected picked up by the loading picker 110 of the lens unit supply unit 100 is not directly supplied to the lens unit inspection unit 300, 400, but is loaded on the sheet block 210 of the lens unit transfer unit 200. and supplied.

The interruption of the transfer operation of the loading picker 110 due to the inspection speed of the lens unit inspection device 310, 410 is minimized, and the lens unit inspection device 310, 410 is also related to the lens unit supply process of the loading picker 110. In order to inspect the lens unit without the lens unit, the lens unit is supplied through the lens unit transfer unit 200.

The lens unit transfer unit 200 is provided with a plurality of sheet blocks 210 that can be independently transferred in the X-axis direction. The plurality of sheet blocks 210 may be provided to change the inspection direction of the lens unit in addition to serving as a process buffer to prevent interruption of each process.

For example, the light incident surface of the lens unit accommodated in the coupling tray of the lens unit supply unit 100 is received so that it faces upward, but in the lens unit inspection units 300 and 400, the inspection direction is the light incident surface of the lens unit. If the direction is downward, the direction of the lens unit can be changed by flipping the lens unit on the sheet block 210 of the lens unit transfer unit 200.

The sheet block 210 may be provided with a plurality of loading grooves in the X-axis direction, which is the same as the transport direction. In the embodiment shown in FIG. 1, the sheet blocks 210a, 210b, and 210c are each provided with four loading grooves, and three may be provided in parallel to enable independent transport in the X-axis direction.

Each sheet block (210a, 210b, 210c) can be mounted on a sheet block transfer unit (215a, 215b, 215c) capable of independent transport in the X-axis direction.

That is, the three sheet blocks 210a, 210b, and 210c of the embodiment shown in FIG. 1 can each accommodate the 12 lens units loaded by the loading picker 110 of the lens unit supply unit 100, , the pickup process of the lens unit by the test picker 230 provided in the lens unit transfer unit 200 and the loading process of the lens unit by the loading picker 110 are performed simultaneously, so that this can be performed in the work process of any one picker. This has the effect of preventing process interruption of other pickers due to this reason.

The sheet block 210 can flip the loaded lens units up and down as needed, and the lens units that are selectively upside down are picked up by the test picker 230 and sent to the lens unit inspection units 300 and 400. can be supplied.

The lens unit transfer unit 200 may be equipped with a test picker 230. The structure and function of the test picker 230 may be the same as the loading picker 110. Specifically, the test picker 230, like the loading picker 110, may be equipped with a plurality of pickup units 231 and a vision unit 233 for downward imaging inspection.

Likewise, an upward vision unit 234 for upward imaging inspection of the lens unit picked up by the pickup unit 231 of the test picker 230 may be provided below the transfer area of the test picker 230. Each test picker 230 is also mounted on a transfer unit 235 of a cantilever gantry structure to enable transfer in the X-axis or Y-axis direction, and can be further equipped with a support guide 239 to reinforce the cantilever-shaped gantry structure. there is.

Therefore, as shown in FIG. 1, the lens unit inspection units 300 and 400 are provided with two lens unit inspection devices 310 and 410 side by side in the X-axis direction, and the test pickers 230a and 230b are respectively Two lens unit inspection devices 310 and 410 may be provided in the corresponding area, spaced apart in the X-axis direction.

The test picker 230 of the embodiment shown in FIG. 1 may be provided with two pickup units in the X-axis direction. The lens unit inspection units 300, 400 may be equipped with two lens unit inspection devices 310, 410 for efficiency of the inspection process, and each lens unit inspection device 310, 410 sequentially performs different inspections. Two inspection tables (301, 303, 401, 403) may be provided in the X-axis direction. Since the lens unit inspection units 300 and 400 are equipped with two lens unit inspection devices 310 and 410, the test pickers 230a and 230b also inspect the lens units inspected by each lens unit inspection device 310 and 410. Two may be provided for handling.

Each test picker (230a, 230b) picks up the lens unit mounted on the sheet block (210a, 210b, 210c) and inspects the first and second inspection tables (301, 401) of each lens unit inspection device (310, 410). After the lens units are sequentially placed on the inspection tables 303 and 403 to be inspected, the lens units that have been inspected on the second inspection table of the inspection device can be loaded back onto the sheet blocks 210a, 210b, and 210c.

In this case, the test pickers (230a, 230b), each equipped with two pickup units, pick up the lens unit that has been inspected on the second inspection table (303, 403), load it on the sheet blocks (210a, 210b, 210c), and inspect it. After picking up one target lens unit and transferring it to the lens unit inspection unit (300, 400), the lens unit that was previously placed and inspected on the first inspection table (301, 401) is picked up and the lens unit to be inspected transferred to that location is inspected. Hold it. Then, the lens unit inspected on the first inspection table is placed on the second inspection table (303, 403) to perform the inspection, then it is picked up and placed back on the sheet block 210, and then a new inspection target lens unit is picked up again and the lens unit is inspected. It is transferred to the inspection department (300, 400). Therefore, one of the test picker's pickup units picks up the lens unit to be inspected loaded on the sheet block and transfers it to the lens unit inspection section, and the other pickup unit picks up the lens unit that has been inspected in the lens unit inspection section and transfers it to the sheet block. transferred to In addition, the delivery process of the lens unit to be inspected and the lens unit that has been inspected can be carried out together in the sheet block.

In addition, in order to simplify the transfer trajectory of the test picker 230 in the lens unit inspection units 300 and 400, the pickup units 231a and 231b of the test pickers 230a and 230b will also be provided spaced apart in the X-axis direction. You can.

That is, each of the test pickers 230a and 230b is provided with the same pickup unit in the The movement line of the pickup unit can be simplified only in the X-axis direction.

In addition, it is preferable that the number of pickup units of the test picker 230 matches the number of inspection tables of the lens unit inspection devices 310 and 410.

As in the embodiment referring to FIG. 1, even when the number of inspection tables of the lens unit inspection devices 310 and 410 is two and the number of pickup units of the test picker 230 is also two, the lens unit inspection unit 300 , 400) and the number of test pickers that travel back and forth between one sheet block 210 can be driven as one except at the start of the initial process.

In this way, in the process of transferring the sheet block 210 and the lens unit inspection unit 300 and 400, the test picker 230 has one pickup unit pick up and transfer one lens unit, and one of the two pickup units picks up and transfers one lens unit. The remaining pickup unit may play the role of storing the lens unit in order to pick up the lens unit inspected at the first inspection table and transfer it to the second inspection table.

In this way, the lens units that have completed two types of inspections sequentially on the first inspection table and the second inspection table of each lens unit inspection device 310 and 410 can be returned to any one sheet block 210 and loaded.

If the lens unit loaded on the sheet block 210 is flipped and flipped upside down before inspection, it is picked up in the flipped state again by the unloading picker 510 that constitutes the lens unit delivery unit 500 and placed on the delivery tray, etc. can be loaded. That is, in the present invention, the loading direction of the lens units supplied from the tray supply unit must match the loading direction of the lens units loaded from the tray delivery unit. To this end, the lens unit loaded on the sheet block is flipped once before it is delivered to the lens unit inspection section to change the loading direction of the lens unit, and after the lens unit inspection is completed, it is loaded back onto the sheet block by the tester picker. You can change the loading direction of the lens unit by flipping it once more.

Meanwhile, like the lens unit supply unit 100, the lens unit delivery unit 500 is also supplied with a combination tray in which a base tray with multiple loading grooves and a tray cover that covers the base tray and prevents the lens unit from coming off are combined. It can be.

The tray discharge unit of the present invention includes a tray magazine stacked in a combined tray state in which a tray base in which lens units will be contained and a tray cover are combined according to the inspection results, and a first tray on which good lens units are loaded according to the inspection results of the lens unit inspection unit; a second tray on which defective or reworked lens units are loaded; The combination tray is picked up from the tray cover storage unit and the tray magazine where tray covers separated from the combination tray are stacked, and the base tray is placed on the first tray or the second tray, and the tray cover is placed in the tray cover storage unit. It can include a traypicker passed to .

Specifically, the lens unit delivery unit 500 includes a tray supply device 530 in which empty combination trays are stacked, and at least two devices for loading lens units according to the inspection results of the lens unit inspection devices 310 and 410. There may be provided lens unit loading areas 540 and 550 and a cover storage area 560 for separating and storing the tray cover from the combined tray provided by the tray supply device 130.

The tray supply device 130 is provided with a stack of empty combination trays, and in order to load a lens unit to be inspected on the base tray constituting the combination tray, the tray cover is similarly connected to the tray picker 120 from the combination tray. After being separated and picked up, the lens unit pickup process by the loading picker 110 must be performed. Accordingly, the lens unit delivery unit 500, like the lens unit supply unit 100, also uses a tray picker 520 for picking up the tray and picks up the inspected lens unit loaded on the sheet block 210 to cover the tray. An unloading picker 510 may be provided for loading into the loading groove of the removed base tray.

In addition, the lens unit delivery unit 500, unlike the lens unit supply unit 100, has at least two lens unit loading areas to classify and export lens units according to the inspection results from the lens unit inspection units 300 and 400. (540, 550) are provided.

The lens unit loading area shown in FIG. 1 may include two lens unit loading areas 540 and 550, for example, two loading areas for classifying lens units according to inspection results such as pass and fail, The number of loading areas may be increased depending on the type of inspection results or the frequency of classification results. For example, the classification criteria according to the inspection results may be the best product, good product, and defective product, or there may be two loading areas for loading frequently defective products and one loading area for loading defective products.

The lens unit delivery unit 500 picks up the combination tray supplied from the tray supply device 530 with a tray picker and transfers it to either the first lens unit loading area 540 or the second lens unit loading area 550. After placing the base tray, only the tray cover is adsorbed with the suction unit of the tray picker and the tray cover is placed in the tray cover storage area. Then, after the tray picker picks up the combination tray, it is placed in the remaining lens unit loading area. The base is mounted, the tray cover is adsorbed by the tray picker's suction unit, and then it waits at the top of the tray cover storage section.

If all inspected lens units are loaded on one tray, the tray cover adsorbed on the suction unit of the tray picker is used to combine with the base tray, and the corresponding lens unit loading area (540 or 550) is lowered. Place the new base tray on the top.

The new base tray is placed in the state where the tray picker picks up the combined tray, and the tray cover is adsorbed by the tray picker's suction unit and then waits again at the top of the tray cover storage area. This operation can be repeated during the lens unit loading process.

Figure 2 shows the tray supply device 130 of the lens unit supply unit 100 of the lens unit inspection system 1 according to the present invention from the base tray on which the lens unit to be inspected is loaded and the combination tray on which the tray cover is mounted. A front view is also shown in which the tray picker 120 is lowered to remove the tray cover, and FIG. 3 shows the forward and backward clamps 125 of the tray supply device 130 with the tray picker 120 of FIG. 2 lowered. 4 shows a front view of a state in which the tray cover is removable from the combination tray of FIG. 3, and FIG. A front view is shown with the cover and base tray separated.

2 to 4 illustrate the process of separating the tray cover (tc) from the combined tray in the tray supply device 130 of the lens unit supply unit 100 for convenience of explanation, but this is the process of separating the tray cover (tc) from the combined tray of the lens unit delivery unit 500. The same applies to the process of separating the tray cover (tc) from the tray supply device 130.

That is, the tray supply devices of the lens unit supply unit 100 and the lens unit delivery unit 500 may be configured to have the same structure.

As described above, the lens unit supply unit 100 is provided in a tray supply device 130 in which trays containing the lens units to be inspected are stacked, and the combined trays are sequentially separated from the base tray after the tray cover tc is separated. The lens unit (not shown) loaded in (t) can be picked up and taken out.

The tray supply device 130 shown in FIG. 2 shows an example in which one combination tray is provided, but the combination trays may be stacked in multiple layers and configured to rise vertically as the combination tray is transported. This also applies to the tray supply device 130 of the lens unit delivery unit 500.

The combination tray may include a base tray (t) provided with a plurality of loading grooves and a tray cover (tc) mounted on the base tray to prevent the lens unit from leaving the loading groove.

The tray picker 120 is equipped with a suction unit 123 for picking up the tray cover by adsorbing it in addition to the gripper 121 for transporting the base tray. The adsorption unit 123 may be provided with a suction pad 123a for adsorbing the upper surface of the tray cover tc and a pneumatic line 123b for applying negative air pressure to the suction pad 123a.

When the tray cover (tc) is mounted on the base tray (t) and the upper surface of the tray cover (tc) is picked up by adsorption by the tray picker 120, not only the tray cover (tc) is picked up, but also the base tray (tc) is picked up. Since the tray (t) is also picked up, a process of separating the tray cover (tc) from the base tray (t) is necessary in order to pick up the lens unit accommodated inside the combination tray from the lens unit supply unit 100.

Accordingly, the tray supply device 130 may be provided with a forward-backward clamp 125. The forward and backward clamp 125 may be provided on the side of the combination tray and have a structure capable of advancing and retreating. The forward and backward clamp 125 may be provided with a clamp member 1251 and a forward and backward driving device 1255 that drives the clamp member 1251 forward and backward.

A plurality of forward and backward clamps 125 may be provided along the circumference of the combining tray, and a plurality of forward and backward clamps 125 are preferably provided at positions facing each other around the circumference of the combining tray.

Therefore, as shown in FIG. 2, when the tray picker 120 is lowered so as to adsorb the tray cover, and the forward/backward clamp 125 advances as shown in FIG. 3, the clamp member 1251 ) can be placed between the tray cover (tc) and the base tray (t) of the combination tray.

In this state, as shown in FIG. 4, when the upper surface of the tray cover (tc) is picked up by adsorbing using the suction unit 123 provided on the tray picker 120, the tray cover (tc) is attached to the base. It can be picked up separately from the tray (t).

And, as shown in FIG. 4, the gripper 121 provided with the locking protrusion 1211 of the tray picker 120 can pick up the base tray (t) when transferring the base tray (t). That is, in the lens unit supply unit 100, all lens units loaded on the base tray are picked up by the loading picker 110 and supplied to the sheet block 210, and the base tray (t) is placed in the tray discharge unit 140. ), or when transferring the base tray with the tray cover separated from the lens unit delivery unit 500 to the first lens unit loading area 540 or the second lens unit loading area 550, respectively, The gripper of the tray picker 120 may be used.

Figure 5 shows the rotary clamp 126 of the tray supply device 130 in an open state before the tray picker 120 is lowered to separate the tray cover from the combined tray, and Figure 6 shows the combined state. This shows a state in which the tray picker separates the tray cover from the tray, picks it up, and raises it, and the rotary clamp 126 of the tray supply device 130 rotates to fix the base tray (t).

In addition, unlike the lens unit delivery unit 500, the lens unit supply unit 100 may further include a rotational clamp 126 in addition to the tray supply device 130 described above.

The forward-backward clamp 125 can also play the role of fixing the base tray (t) during the lens unit pickup process with the tray cover separated, but the forward-backward clamp is installed on all areas of the border of the large base tray. If 125 is not provided, a rotary clamp 126 may be additionally provided to strengthen the support function of the base tray.

In the process of the loading picker 110 picking up the lens unit loaded on the base tray, an impact may be applied to the base tray (t), and the position of the base tray is prevented from being changed due to such impact, or the position of the base tray is prevented from being changed due to such impact. In order to prevent the impact from being transmitted to other areas of the base tray, the rotating clamp 126 in addition to the forward and backward clamp 125 may be used in the pickup process of the lens unit.

The rotational clamp 126 provided in the tray supply unit shown in FIGS. 5 and 6 may be provided in a rotational type, unlike the forward and backward clamp 125. The rotary clamp 126 may be provided with a clamp driving member 1265 for rotational driving using the lever principle.

Therefore, as shown in FIG. 5, in the process of the tray picker 120 descending and the suction unit 123 of the tray picker 120 adsorbing and picking up the tray cover, the rotary clamp 126 is opened. However, as shown in FIG. 6, after the tray cover is separated from the base tray and picked up, the rotary clamp 126 is additionally rotated in the clamping state of the forward and backward clamp 125 to secure the base tray. By fixing the upper surface edge of (tc), shaking of the base tray (tc) can be minimized in the subsequent lens unit pickup process.

When all lens units loaded on the base tray are picked up and taken out, both the forward and backward clamps and the rotary clamp are released from their clamping states, and the empty base tray can be picked up and taken out by the tray picker.

Figure 7 shows a perspective view of a sheet block 210 with a flipping function constituting the lens unit transfer unit 200 of the lens unit inspection system 1 according to the present invention, and Figure 8 shows the sheet block of Figure 7 ( 210) shows the side.

As described above, the inspection target lens unit accommodated in the combination tray of the lens unit supply unit 100 may be supplied arranged so that the light incident surface faces upward, etc., and may be supplied to the inspection table of the lens unit inspection unit 300, 400. The lens unit inspection direction may be the opposite direction.

In this case, before the test picker 230 picks up the lens unit, the lens unit must be flipped upside down, that is, a flipping process. Flipping the lens unit as needed is performed by the sheet block 210.

The sheet block 210 may be provided with a rotating member 211 for rotating the lens unit loaded in the loading groove and a fixing member 212 on which the lens unit rotated by the rotating member 211 is mounted.

The loading grooves 2111 and 2121 provided in the rotating member 211 and the fixing member 212 of the sheet block 210 may be provided to be spaced apart in the X-axis direction.

As shown in FIG. 7, the rotating member 211 and the fixing member 212 are hinged so that the rotating member 211 rotates according to the rotation of the rotating wheel 213 and is connected to the fixing member 212. It may be configured to fold.

The rotating member 211 and the fixing member 212 are provided with loading grooves 2111 and 2121 at corresponding positions, so that the lens unit picked up by the loading picker 110 is loaded on the rotating member 211. When the rotating member 211 is rotated while loaded in the groove 2111 and the rotating member 211 and the fixing member 212 are folded, the lens loaded in the loading groove 2111 of the rotating member 211 The unit (lu) is delivered to the loading groove 2121 of the fixing member 212, so that the lens unit (lu) can be flipped up and down.

The rotating wheel 213, which is fixed to one side of the rotating member 211 and rotates together with the rotating member 211, is generated by a rotating motor 218 around a rotating shaft 2131 provided at its center and is connected to a drive belt ( 214) can be rotated by the driving force transmitted.

The rotating member 211 and the fixing member 212 of the seat block 210 may be mounted on the upper frame 216, and the upper frame 216 may be mounted on the lower frame 218 where the motor is accommodated. It can be.

As shown in Figure 8, each loading groove (2111, 2121) of the single rotating member 211 and the fixing member 212 has a pneumatic passage (2112, 2122) and a pneumatic connection pipe (2114, 2124), respectively. It is connected to maintain the loading state of the lens unit (lu) seated in each loading groove (2111, 2121).

The pneumatic connection pipes 2114 and 2124 may be connected to the rotating member 211 and the fixing member 212, respectively, through the upper frame. Additionally, a stopper in the form of a button may be provided on the rotating member 211 or the fixing member 212 to control the rotation of the rotating member. The embodiment shown in FIGS. 7 and 8 is shown as having a stopper on the fixing member 212, but the position may be changed.

9 and 10 show a lens unit (lu) to be inspected on the rotating member 211 of the sheet block 210 of the lens unit transfer unit 200 by the loading picker 110 of the lens unit supply unit 100. The mounting process is shown.

When the loading picker 110 of the lens unit supply unit 100 picks up the lens unit lu and seats the lens unit lu on the rotating member 211 of the sheet block 210 and rises, the lens unit lu ) The sheet block 210 loading process is completed. If there is no need to change the inspection direction of the lens unit on the inspection table of the lens unit inspection device (310, 410), load the lens unit into the loading groove (2121) of the fixing member (212) and With the lens unit loaded in the loading groove 2121, the lens unit lu may be picked up and transferred by the test picker 230, which can be transferred in the X-axis direction or Y-axis direction. In addition, when the inspection direction of the lens unit (lu) does not require up-down reversal but simply requires left-right reversal, the lens unit (lu) is rotated by rotating the pickup unit that constitutes the loading picker 110 or the test picker 230 ) can be flipped left and right.

In addition, when there is no need to change the inspection direction of the lens unit lu in the lens unit inspection device 310, 410, the loading picker 110 places the lens unit lu on the rotating member 211. However, the lens unit (lu) may be loaded into the loading groove 2121 of the fixing member 212 so that the test picker 230 picks up the lens unit (lu) loaded on the fixing member 212. It may be possible.

In addition, in the case where the lens unit inspection direction in the lens unit inspection device 310, 410 requires the lens unit lu to be upside down, the lens unit lu is loaded in the loading groove of the rotating member 211. The rotating member 211 can be driven to rotate.

After the lens unit (lu) is loaded into the loading groove of the rotating member 211 by the loading picker 110, the pickup state of the loading picker 110, that is, the pneumatic adsorption state of the pickup unit is released, but the pickup is not performed. In the process of raising the loading picker 110 due to the pressure difference or static electricity between the inside and outside of the pickup head 1111 of the unit 111, the lens unit lu may leave the loading groove due to a force remaining in the pickup head. Therefore, the lens unit (lu) may be loaded into the loading groove of the rotating member 211 and negative pressure may be applied to the loading groove of the rotating member 211 before the loading picker 110 rises.

If negative pressure is not applied to the loading groove of the rotating member 211, when the rotating member 211 is rotated while mounted on the rotating member 211, the loaded lens unit ( lu) may fall or leave the loading groove, so it is preferable that negative pressure is applied to the loading groove in advance before the rotation operation of the rotating member 211 is performed.

11 to 13 show the fixing member 212 of the sheet block 210 by rotating the rotating member 211 of the sheet block 210 of the lens unit transfer unit 200 on which the lens unit (lu) to be inspected is mounted. shows the process of loading the inspection target lens unit (lu) by flipping it up and down.

As shown in FIG. 11, in order to prevent the lens unit from falling or leaving during the rotation of the rotating member 211, the lens unit is connected to the loading groove 2111 of the rotating member 211 through a pneumatic passage 2112. The applied sound pressure can be maintained until the rotation operation is completed.

And, as shown in FIG. 12, by rotating the rotating member 211, the rotating member 211 is rotated 180 degrees and folded with the fixing member 212, so that the fixing member 212 When the lens unit is loaded in the loading groove 2121 of the rotating member 211, the negative pressure applied to the loading groove 2111 of the rotating member 211 is released, and during the return operation of the rotating member 211, the static electricity of the lens unit, etc. Negative air pressure may be applied to the loading groove 2121 of the fixing member 212 for the same reason, such as preventing the loading groove from leaving.

And, as shown in FIG. 13, when the rotating member 211 is reversed and returned to its original position, the lens unit lu to be inspected is flipped up and down in the state in which it was loaded on the rotating member 211. It can be loaded into the loading groove 2121 of the fixing member 212 in its current state.

Figures 14 and 15 show a process of picking up a lens unit (lu) to be inspected mounted on the fixing member 212 of the sheet block 210 by the test picker 230.

As shown in FIGS. 14 and 15, the test picker 230 is returned when the rotating member 211 is returned and inverted up and down in the loading groove 2121 of the fixing member 212 of the sheet block 210. ) can descend to adsorb and pick up the lens unit (lu), and in this case, the negative pressure applied to the loading groove 2121 of the fixing member 212 is the pickup unit 231 constituting the test picker 230. ) can be maintained until the adsorption state of the pickup head 2311 is initiated.

The lens unit inspection method using the lens unit inspection system of the present invention is as follows.

First, a combination tray is supplied including a tray base on which the lens unit to be inspected is loaded and a tray cover mounted on the tray base. The supplied combination tray adsorbs the tray cover with the suction unit of the tray picker, and the tray cover is separated from the combination tray by holding the tray base with a gripper. Thereafter, the lens units loaded on the tray base are individually picked up with a loading picker and loaded into the loading groove of the sheet block that can rotate up and down. After the lens unit is loaded into the loading groove of the sheet block, the sheet block is rotated 180° to reverse the vertical direction of the lens unit, and the inverted lens unit is picked up by a test picker and delivered to the lens unit inspection unit. The lens unit for which the lens unit inspection has been completed is picked up with a test picker and loaded into the loading groove of the sheet block. The sheet block is rotated 180° to reverse the vertical direction of the lens unit, and then the sheet block is moved to the unloading picker side. . The unloading picker sorts and loads the lens units into the first tray or the second tray according to the lens unit inspection results.

Meanwhile, FIGS. 9 to 15 illustrate a method for supplying the lens unit lu to be inspected from the lens unit supply unit 100 via the sheet block 210 of the lens unit transfer unit 200, but the lens unit inspection unit The process of supplying the lens unit lu that has been inspected at (300, 400) to the sheet block 210 in order to export it to the lens unit delivery unit 500 is also performed in reverse of the process shown in FIGS. 9 to 15. You can also use this method. This means that if the inspection direction is opposite to the lens unit supplied from the lens unit supply unit 100 so that the light incident surface of the lens unit (lu) faces upward, the lens unit (lu) is inspected by inverting it up and down, and then the lens unit (lu) is inspected. ) in the case of returning the direction to the original position, but in the case of loading and unloading on a tray in the same direction as the inspection direction, the unloading picker 510 unloads the upside-down lens unit (lu) returned to the fixing member 212. It is okay to take out the lens unit (lu) by picking it up and taking it out.

Although this specification has been described with reference to preferred embodiments of the present invention, those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims described below. It will be possible to implement it. Therefore, if the modified implementation basically includes the elements of the claims of the present invention, it should be considered to be included in the technical scope of the present invention.

1: Lens unit inspection system
100: Lens unit supply unit
200: Lens unit transfer unit
300, 400: Lens unit inspection department
500: Lens unit export unit

Claims (12)

A tray supply unit where a base tray loaded with a lens unit to be inspected and a combination tray equipped with a tray cover on top are stacked and supplied;
A tray picker capable of moving in the X-axis direction to separate the combined tray supplied from the tray supply unit and to pick up the combined tray or the tray cover;
a loading picker provided to be capable of being transferred in the X-axis direction and Y-axis direction to pick up and transfer the lens unit loaded on the base tray;
A sheet block on which the lens units picked up and transferred by the loading picker are loaded, capable of flipping the loaded lens units up and down, and movable in the X-axis direction;
At least one lens unit inspection unit for inspecting a lens unit to be inspected that is flipped upside down;
The X-axis direction and Y-axis for picking up the lens unit to be inspected and loaded upside down by the sheet block and transferring it to the lens unit inspection unit, or transferring the lens unit inspected by being upside down in the lens unit inspection unit to the sheet block. Test picker capable of directional transport;
An unloading picker provided to be transportable in the X-axis direction and Y-axis direction to pick up the lens unit loaded on the sheet block after the inspection is completed in the lens unit inspection unit; and,
A lens unit inspection system comprising a tray carrying unit for loading and unloading the lens unit picked up by the unloading picker. A tray supply unit where a base tray loaded with a lens unit to be inspected and a combination tray equipped with a tray cover on top are stacked and supplied;
A tray picker capable of moving in the X-axis direction to separate the combination tray supplied from the tray supply unit and to pick up the combination tray or the tray cover;
a loading picker provided to be capable of being transferred in the X-axis direction and Y-axis direction to pick up and transfer the lens unit loaded on the base tray;
a sheet block on which the lens units picked up and transferred by the loading picker are loaded and movable in the X-axis direction;
At least one lens unit inspection unit for inspecting the lens unit;
A test picker capable of transport in the
An unloading picker provided to be able to transfer in the and,
A lens unit inspection system comprising a tray carrying unit for loading and unloading the lens unit picked up by the unloading picker. According to claim 1 or 2,
The tray picker includes an adsorption unit for adsorbing and separating the tray cover from the combination tray, and a gripper for picking up and transferring the base tray from which the tray cover has been separated from the combination tray,
In the process of the suction unit of the tray picker adsorbing and separating the upper surface of the tray cover from the combination tray,
The lens unit inspection system is provided on a side of the base tray so that the base tray is separated from the tray cover and has a structure capable of moving forward and backward from the tray, and further includes a forward and backward clamp for clamping the base tray. According to paragraph 3,
In the process of the loading picker picking up the lens unit loaded on the base tray,
The lens unit inspection system further includes a rotational clamp that rotates after the tray cover is picked up to support an edge of the base tray in order to fix the base tray together with the forward and backward clamp. According to paragraph 1,
The sheet block of the lens unit transfer unit is provided with a loading groove in which the lens unit is loaded, a rotating member capable of rotating 180 degrees, and a fixing member provided with a plurality of loading grooves in which the lens unit is flipped up and down and loaded when the rotating member rotates 180 degrees. Provided, the loading picker loads the lens unit to be inspected into the loading groove of the rotating member of the sheet block, and the test picker is loaded in a flipped state in which the rotating member is rotated and loaded into the loading groove of the fixing member. A lens unit inspection system characterized by picking up a lens unit. According to clause 5,
The loading groove provided in the rotating member of the seat block is connected to a pneumatic flow path for applying negative pneumatic pressure, and when the rotating member is rotated to transfer the lens unit to the fixing member, negative pneumatic pressure is applied. Lens unit inspection system. According to paragraph 1,
The sheet block is flipped once before being delivered to the lens unit inspection unit to change the loading direction of the lens unit,
A lens unit inspection system characterized in that after the lens unit inspection is completed, the lens unit is loaded onto the sheet block and flipped once again to change the loading direction of the lens unit. According to claim 1 or 2,
A lens unit inspection system, characterized in that the loading direction of the lens unit supplied from the tray supply unit and the loading direction of the lens unit loaded on the tray discharge unit match each other. According to claim 1 or 2,
A lens unit inspection system comprising a plurality of lens unit inspection units and performing two or more types of inspection. According to claim 1 or 2,
The test picker has two pickup units,
One pickup unit picks up the lens unit to be inspected loaded on the sheet block and transfers it to the lens unit inspection unit,
Another pickup unit picks up the lens unit that has been inspected in the lens unit inspection unit and transfers it to the sheet block,
A lens unit inspection system characterized in that the process of transferring the lens unit to be inspected and the lens unit that has been inspected is carried out simultaneously in the sheet block. According to claim 1 or 2,
The tray discharge unit
Tray magazines stacked in a combined tray state in which the tray base and tray cover in which the lens unit will be placed according to the test results are combined;
a first tray on which good lens units are loaded according to the inspection results of the lens unit inspection unit;
A second tray on which defective or reworked lens units are loaded;
a tray cover storage unit where tray covers separated from the combined tray are stacked; and
A lens unit inspection system comprising a tray picker that picks up the combined tray from the tray magazine, places a base tray on the first tray or the second tray, and delivers the tray cover to a tray cover storage unit. . In the lens unit inspection method of the lens unit inspection system according to any one of claims 1, 5 to 7,
Supplying a combined tray having a tray base loaded with a lens unit to be inspected and a tray cover mounted on the tray base;
Separating the tray cover from the combined tray by adsorbing the tray cover with a tray picker;
Picking up the lens units loaded on the tray base individually with a loading picker and loading them into a loading groove of a sheet block that can rotate up and down;
Rotating the sheet block by 180° to invert the vertical direction of the lens unit, then picking up the inverted lens unit by a test picker and delivering it to the lens unit inspection unit;
The lens unit for which the lens unit inspection has been completed is picked up with a test picker, loaded into the loading groove of the sheet block, rotated by 180° to reverse the vertical direction of the lens unit, and then moved to the unloading picker side. step; and
A lens unit inspection method comprising the step of the unloading picker sorting and loading the lens units on a tray according to the lens unit inspection results.

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