Feeding and discharging equipment for micro display screen laminating system and feeding device of feeding and discharging equipment

Abstract

The utility model discloses feeding and discharging equipment for a micro display screen attaching system and a feeding device of the feeding and discharging equipment. The feeding device comprises a feeding frame, a feeding conveyor arranged on the feeding frame, a full tray stacking mechanism and an empty tray stacking mechanism, wherein the full tray stacking mechanism and the empty tray stacking mechanism are arranged in the extending direction of the feeding conveyor in a spaced mode. The full tray stacking mechanism and the empty tray stacking mechanism are arranged on the feeding frame, the blocking mechanism is arranged between the full tray stacking mechanism and the empty tray stacking mechanism, the limiting mechanism is arranged on the feeding frame and used for limiting trays located at the material taking end, and a plurality of full trays provided with micro display screens or three-color light combination prisms can be stacked in the full tray stacking mechanism. A plurality of empty trays without micro display screens or three-color light combination prisms can be stacked in the empty tray stacking mechanism; by limiting the structure of the feeding device, feeding of the micro display screen and the three-color light combination prism is achieved, manual operation is not needed, the automation degree is high, the feeding efficiency is high, and the attaching efficiency of the micro display screen can be effectively improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of micro display screen bonding equipment, specifically relating to a loading and unloading device and a loading device for a micro display screen bonding system. Background Technology

[0002] Currently, display panels are widely used in various aspects of people's lives, becoming an indispensable part of daily life. The market is seeing an increasing variety of microLED (micro-display) technologies, with displays based on micron-sized light-emitting diode technology gradually gaining attention. Simultaneously, the demand for assembling and bonding microLEDs is growing.

[0003] Currently, the technology only allows for the mass production of monochrome displays. Therefore, integrating three RGB colors into a monochrome display to combine the light and form various patterns is imperative. One feasible solution is to attach microdisplays of the three different RGB colors to the three faces of a three-color combining prism, thereby obtaining a microdisplay capable of capturing combined light images.

[0004] However, in current microdisplay bonding equipment, both the microdisplay and the three-color light-combining prism are manually fed into the bonding equipment, which results in high labor costs and low production efficiency, and urgently needs to be improved. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a loading and unloading device and its loading apparatus for a micro-display bonding system.

[0006] The present invention adopts the following technical solution:

[0007] A feeding device for a microdisplay bonding system includes a feeding rack, a feeding conveyor mounted on the feeding rack, a full-load tray stacking mechanism and an empty-load tray stacking mechanism arranged at intervals along the extension direction of the feeding conveyor, a blocking mechanism disposed between the full-load tray stacking mechanism and the empty-load tray stacking mechanism, and a limiting mechanism disposed on the feeding rack to limit the tray located at the picking end. Multiple full-load trays equipped with microdisplays or three-color light-combining prisms can be stacked in the full-load tray stacking mechanism, and multiple empty-load trays after unloading the microdisplays or three-color light-combining prisms can be stacked in the empty-load tray stacking mechanism.

[0008] The full-material tray stacking mechanism clamps and fixes multiple full-material trays stacked vertically. It includes two first partition plates arranged at intervals along the extension direction of the feeding conveyor on the feeding frame, a full-material stacking area formed between the two first partition plates, a first lifting mechanism located below the full-material stacking area that can drive multiple full-material trays to descend, and two first clamping mechanisms arranged opposite each other on the feeding frame to clamp and fix multiple full-material trays. The full-material stacking area is located above the feeding conveyor. The first lifting mechanism can drive multiple stacked full-material trays to descend, so that the full-material trays located at the bottom descend and are supported on the feeding conveyor and conveyed forward. The first clamping mechanisms can clamp opposite full-material trays to support the multiple stacked full-material trays.

[0009] Preferably, the first lifting mechanism includes a first lifting frame located below the full material stacking area, a first lifting plate that can be moved up and down on the first lifting frame, two first support plates that can support multiple full material trays and are disposed opposite to each other on the first lifting plate, a first lifting member disposed on the first lifting frame and connected to drive the first lifting plate to move up and down, and two first guide members that are spaced apart between the first lifting frame and the first lifting plate, with the two first guide members respectively disposed on both sides of the first lifting member.

[0010] Preferably, the first guide component includes two first guide sleeves spaced apart on the first lifting frame, two first guide rods movably disposed in the two first guide sleeves, a first connecting plate connected to the lower ends of the two first guide rods, and a first limiting post disposed on the first connecting plate, wherein the upper end of the first guide rod is connected to the first lifting plate.

[0011] Preferably, the first clamping mechanism includes a first clamping plate that can move back and forth relative to the full material stacking area on the feeding rack, a first clamping cylinder that is connected to and drives the first clamping plate to move on the feeding rack, two first sliders that are disposed opposite to each other at the bottom of the first clamping plate, and two first slide rails that are spaced apart on the feeding rack and respectively cooperate with the two first sliders.

[0012] Preferably, the opposite surfaces of the full material tray and the first clamping plate are formed with one or more inwardly extending clamping holes, and the opposite surfaces of the first clamping plate and the full material tray are formed with one or more clamping portions that can be embedded in the clamping holes.

[0013] Preferably, the empty material tray stacking mechanism includes two second partition plates arranged at intervals along the extension direction of the feeding conveyor on the feeding frame, an empty material stacking area formed between the two second partition plates, a second lifting mechanism located below the empty material stacking area that can drive the empty material trays to rise, and two fixing mechanisms arranged opposite to each other on the feeding frame to support and fix multiple empty material trays. The second lifting mechanism can drive the empty material trays returning to the empty material stacking area to move upward so that they are supported on the fixing mechanisms. The empty material stacking area is located above the feeding conveyor.

[0014] Preferably, the fixing mechanism includes two fixed blocks spaced apart along the extension direction of the feeding conveyor, two support blocks respectively rotatably mounted on the two fixed blocks, a first limiting block mounted on the fixed blocks and supported at the bottom of the relative support blocks, and a second limiting block mounted on the fixed blocks to restrict the support blocks from continuing to rotate upward. One section of the support block extends inward into the empty material stacking area. When the empty material tray rises, it can cause the support block to rotate upward until it is restricted by the relative second limiting block, thus releasing the restriction on the empty material tray from continuing to rise. When the empty material tray falls back down, it can cause the support block to rotate downward until the support block is supported on the relative first limiting block. At this time, the support block restricts the empty material tray from continuing to fall, so that the empty material tray is supported on the support block.

[0015] Preferably, the blocking mechanism is disposed between adjacent first and second partition plates, and includes a blocking frame located below the feeding conveyor, a blocking block movable on the blocking frame, and a blocking cylinder disposed on the blocking frame to drive the blocking block to move up and down. The blocking cylinder can drive the blocking block to move upward to a position above the feeding conveyor to block the flow of a full or empty material tray.

[0016] Preferably, the limiting mechanism includes a limiting seat located on the feeding rack in front of the material picking end, a limiting cylinder located on the feeding rack on one side of the full material tray, and a limiting plate located at the front end of the limiting cylinder that can abut against the side of the full material tray.

[0017] A loading and unloading device for a microdisplay bonding system includes a base, a first loading device disposed on the base for conveying the microdisplay, a second loading device disposed on the base for conveying a three-color combining prism, an unloading device disposed on the base, and a robotic arm disposed on the base. The robotic arm can respectively clamp the microdisplay and the three-color combining prism to the bonding system or clamp the bonded components of the bonding system to the unloading device. The first loading device and the second loading device adopt any of the loading devices described above.

[0018] As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: the present application realizes the feeding of micro display screens and three-color light combining prisms by limiting the structure of the feeding device, without manual operation, with a high degree of automation and high feeding efficiency, which can effectively improve the bonding efficiency of micro display screens. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the loading and unloading equipment;

[0020] Figure 2 Schematic diagram of the first feeding device Figure 1 ;

[0021] Figure 3 Schematic diagram of the first feeding device Figure 2 ;

[0022] Figure 4 for Figure 2 Enlarged view of the structure at point A in the image;

[0023] Figure 5 Schematic diagram of the first lifting mechanism Figure 1 ;

[0024] Figure 6 Schematic diagram of the first lifting mechanism Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the first clamping mechanism;

[0026] Figure 8 This is a schematic diagram of the blocking mechanism;

[0027] Figure 9 This is a schematic diagram of the structure of a full material tray;

[0028] In the diagram, 1-base, 2-first feeding device, 3-second feeding device, 4-unloading device, 5-robotic arm, 6-full material tray, 21-feeding rack, 22-feeding conveyor, 23-full material tray stacking mechanism, 231-first partition plate, 232-full material stacking area, 233-first lifting mechanism, 234-first clamping mechanism, 2341-first clamping plate, 2342-first clamping cylinder, 2343-first slider, 2344-first slide rail, 2345-clamping part, 235-first lifting frame, 236-first lifting plate, 237-first support plate, 238-first lifting component, 239-first Guide component, 2391-First guide sleeve, 2392-First guide rod, 2393-First connecting plate, 2394-First limiting post, 24-Empty material tray stacking mechanism, 241-Second partition plate, 242-Empty material stacking area, 243-Second lifting mechanism, 244-Fixing mechanism, 2441-Fixing block, 2442-Support block, 2443-First limiting block, 2444-Second limiting block, 25-Blocking mechanism, 251-Blocking frame, 252-Blocking block, 253-Blocking cylinder, 26-Limiting mechanism, 261-Limiting seat, 262-Limiting cylinder, 263-Limiting plate, 61-Clamping hole. Detailed Implementation

[0029] The present invention will be further described below through specific embodiments.

[0030] Reference Figures 1 to 9As shown, a loading and unloading device for a microdisplay bonding system includes a base 1, a first loading device 2 disposed on the base 1 for conveying the microdisplay, a second loading device 3 disposed on the base 1 for conveying a three-color combining prism, an unloading device 4 disposed on the base 1, and a robot arm 5 disposed on the base 1. The robot arm 5 can respectively clamp the microdisplay and the three-color combining prism to the bonding system or clamp the bonded components of the bonding system to the unloading device 4.

[0031] The first feeding device 2 includes a feeding rack 21, a feeding conveyor 22 mounted on the feeding rack 21, a full tray stacking mechanism 23 and an empty tray stacking mechanism 24 arranged at intervals along the extension direction of the feeding conveyor 22, a blocking mechanism 25 disposed between the full tray stacking mechanism 23 and the empty tray stacking mechanism 24, and a limiting mechanism 26 disposed on the feeding rack 21 to limit the trays located at the picking end. The trays include full trays 6 and empty trays. Multiple full trays 6 containing components can be stacked in the full tray stacking mechanism 23 and conveyed one by one to the picking end by the feeding conveyor 22 for the robot arm 5 to pick up. Multiple empty trays after unloading components can be returned and stacked in the empty tray stacking mechanism 24 for storage, and then multiple empty trays can be unloaded at once. Specifically, the full trays 6 and empty trays have the same structure, the difference being whether they are equipped with a micro display screen.

[0032] The full-material tray stacking mechanism 23 clamps and fixes multiple full-material trays 6 stacked vertically. It includes two first partition plates 231 spaced apart on the loading rack 21 along the extension direction of the loading conveyor 22, a full-material stacking area 232 formed between the two first partition plates 231, a first lifting mechanism 233 located below the full-material stacking area 232 capable of lowering the multiple full-material trays 6, and two first clamping mechanisms 234 oppositely arranged on the loading rack 21 to clamp and fix the multiple full-material trays 6. The full-material stacking area 232 is located below the loading rack 21. Above the material conveyor 22, the first lifting mechanism 233 can drive multiple stacked full pallets 6 to descend, so that the lower full pallet descends and supports the feeding conveyor 22 and is conveyed forward. The first clamping mechanism 234 can clamp the opposite full pallet 6 to support the stacked multiple full pallets 6. When the lower full pallet descends and supports the feeding conveyor 22, the blocking mechanism 25 works to block the lower full pallet 6 so that the first clamping mechanism 234 can clamp the opposite full pallet 6, that is, clamp the full pallet located on the second layer.

[0033] The first lifting mechanism 233 includes a first lifting frame 235 located below the full material stacking area 232, a first lifting plate 236 movable up and down on the first lifting frame 235, two first support plates 237 oppositely arranged on the first lifting plate 236 and capable of supporting multiple full material trays 6, a first lifting member 238 disposed on the first lifting frame 235 and connected to drive the first lifting plate 236 to move up and down, and two first guide members 239 spaced apart between the first lifting frame 235 and the first lifting plate 236. Specifically, the two first guide members 239 are respectively disposed on both sides of the first lifting member 238. A guide component 239 includes two first guide sleeves 2391 spaced apart on a first lifting frame 235, two first guide rods 2392 movably disposed in the two first guide sleeves 2391, a first connecting plate 2393 connected to the lower ends of the two first guide rods 2392, and a first limiting post 2394 disposed on the first connecting plate 2393. The upper end of the first guide rod 2392 is connected to the first lifting plate 236. Furthermore, the first lifting component 238 can adopt a structure of motor and lead screw nut pair, which is a commonly used structure in the field of multi-axis motion of components, and will not be described further here.

[0034] The first clamping mechanism 234 includes a first clamping plate 2341 mounted on the loading rack 21 and movable back and forth relative to the full material stacking area 232; a first clamping cylinder 2342 mounted on the loading rack 21 and connected to and driving the first clamping plate 2341 to move; two first sliders 2343 mounted opposite each other at the bottom of the first clamping plate 2341; and two first slide rails 2344 mounted on the loading rack 21 at intervals and respectively cooperating with the two first sliders 2343. Specifically, the surface opposite the full material tray 6 and the first clamping plate 2341 forms one or more inwardly extending clamping holes 61, and the surface opposite the first clamping plate 2341 and the full material tray 6 forms one or more clamping parts 2345 that can be embedded in the clamping holes 61.

[0035] The empty material tray stacking mechanism 24 includes two second partition plates 241 arranged at intervals along the extension direction of the feeding conveyor 22 on the feeding rack 21, an empty material stacking area 242 formed between the two second partition plates 241, a second lifting mechanism 243 located below the empty material stacking area 242 that can drive the empty material trays to rise, and two fixing mechanisms 244 arranged opposite to each other on the feeding rack 21 to support and fix multiple empty material trays. The second lifting mechanism 243 can drive the empty material trays flowing back to the empty material stacking area 242 to move upward and support them on the fixing mechanisms 244, preventing the flowing empty material trays from affecting the flow of the full material tray 6. The empty material stacking area 242 is located above the feeding conveyor 22. Specifically, the structure of the second lifting mechanism 243 is the same as that of the first lifting mechanism 233, which will not be described further here.

[0036] The fixing mechanism 244 includes two fixing blocks 2441 spaced apart along the extension direction of the feeding conveyor 22, two support blocks 2442 respectively rotatably mounted on the two fixing blocks 2441, a first limiting block 2443 mounted on the fixing blocks 2441 and supported at the bottom of the relative support blocks 2442, and a second limiting block 2444 mounted on the fixing blocks 2441 to restrict the support blocks 2442 from continuing to rotate upward. One section of the support block 2442 extends inward into the empty material stacking area 242, and when it is in a horizontal rotating state above the feeding conveyor 22, it will prevent the empty material tray from moving upward. The angle between the first limiting block 2443 and the second limiting block 2444 is 90°. When the empty material tray is returned and stacked, the second lifting mechanism 243 drives the empty material tray to rise, causing the support block 2442 to flip upward and be restricted by the relative second limiting block 2444, thus releasing the restriction on the continued rise of the empty material tray. When the empty material tray falls back, it can drive the support block 2442 to flip downward until the support block 2442 is supported on the relative first limiting block 2443. At this time, the support block 2442 restricts the empty material tray from falling further, so that the empty material tray is supported on the support block 2442, and the returned empty material tray is stacked and stored.

[0037] The blocking mechanism 25 is disposed between the adjacent first partition plate 231 and second partition plate 241. It includes a blocking frame 251 located below the feeding conveyor 22, a blocking block 252 that can be moved up and down on the blocking frame 251, and a blocking cylinder 253 disposed on the blocking frame 251 to drive the blocking block 252 to move up and down. The blocking cylinder 253 can drive the blocking block 252 to move upward to a position above the feeding conveyor 22 to block the flow of the full or empty material tray 6, so as to facilitate the operation of the first clamping mechanism 234 or the second lifting mechanism 243.

[0038] The limiting mechanism 26 includes a limiting seat 261 located on the feeding rack 21 in front of the material picking end of the feeding conveyor 22, a limiting cylinder 262 located on the feeding rack 21 on one side of the full material tray 6, and a limiting plate 263 located at the front end of the limiting cylinder 262 that can abut against the side of the full material tray 6. When the full material tray 6 is conveyed to the picking end, it is blocked by the limiting seat 261 to prevent the full material tray 6 from flowing out of the feeding conveyor 22. The operation of the limiting cylinder 262 drives the limiting plate 263 to abut against the side of the full material tray 6 to limit the full material tray 6 so that the robot arm 5 can pick up the micro display screen in the full material tray 6. When the micro display screen in the full material tray 6 is picked up and becomes an empty material tray, the limiting cylinder 262 resets and releases the fixation of the empty material tray, so that the empty material tray can flow back to the empty material stacking area 242 for stacking and storage under the action of the feeding conveyor 22.

[0039] The second feeding device 3 has the same structure as the first feeding device 2. It feeds the three-color combining prism so that the robot arm 5 can pick up the three-color combining prism and put it into the bonding equipment.

[0040] The unloading device 4 has the same structure as the first loading device 2, except that the specific working processes of each mechanism are slightly different and can be adjusted according to the unloading requirements. During unloading, the empty material tray is transported to the picking end, so that the robot arm 5 can transfer the finished bonding components from the bonding equipment to the empty material tray. After the empty material tray is full of components, the loading belt conveyor 22 drives the full material tray 6 loaded with components to the full material stacking area 232. The first lifting mechanism 233 and the first clamping mechanism 234 stack and store the full material tray 6 for easy transfer by the staff.

[0041] When the first feeding device 2 is working, it stacks multiple full-load trays 6 containing micro-display screens in the full-load stacking area 232, and the first clamping mechanism 234 clamps the bottom full-load tray. When the micro-display screen needs to be fed, the first lifting plate 236 moves upward, causing the two first support plates 237 to move upward until they contact the bottom full-load tray. At this time, the first clamping cylinder 2342 drives the first clamping plate 2341 to move outward, releasing the clamp on the full-load tray 6. Then, the first lifting plate 236 moves downward, causing the stacked multiple full-load trays 6 to move downward. The bottom full pallet is supported on the feeding conveyor 22. At the same time, the blocking cylinder 253 drives the blocking block 252 to move upward to the front of the full pallet 6, blocking the full pallet 6 supported on the feeding conveyor 22. Then, the second clamping cylinder 2342 works to move the first clamping plate 2341 inward to clamp the full pallet on the second layer. At this time, the blocking cylinder 253 drives the blocking block 252 to reset, releasing the blockage on the full pallet 6. The full pallet 6 supported on the feeding conveyor 22 can then flow to the picking end for the robot arm 5 to clamp.

[0042] When empty material trays are returned and stacked, the feeding conveyor 22 reverses the flow to bring the empty material trays to a position opposite the empty material stacking area 242. The second lifting mechanism 243 then moves the empty material trays upward to the empty material stacking area 242. During the upward movement, the empty material trays come into contact with the support blocks 2442 and cause the support blocks 2442 to flip upward, releasing the support blocks 2442 from restricting the empty material trays. When the empty material trays are in position, the second lifting mechanism 243 moves downward to reset, causing the empty material trays to fall back. During the fall, the support blocks 2442 flip downward and support the trays on the relative first limit block 2443. At this point, the empty material trays are blocked from falling further downward and are thus stacked and supported on multiple support blocks 2442, completing the stacking and recycling of the empty material trays. If there are already empty material trays in the empty material stacking area 242, the upward movement of the returning empty material trays will also cause the existing empty material trays to move upward, and the downward fall will also cause the existing empty material trays to move downward.

[0043] This application achieves the feeding of micro-display screens and three-color light combining prisms by defining the structure of the feeding device. It requires no manual operation, has a high degree of automation, and has high feeding efficiency, which can effectively improve the bonding efficiency of micro-display screens.

[0044] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the specification of the present utility model shall still fall within the scope of the patent of the present utility model.

Claims

1. A feeding device for a microdisplay bonding system, characterized in that: It includes a feeding rack, a feeding conveyor mounted on the feeding rack, a full-load tray stacking mechanism and an empty-load tray stacking mechanism arranged at intervals along the extension direction of the feeding conveyor, a blocking mechanism disposed between the full-load tray stacking mechanism and the empty-load tray stacking mechanism, and a limiting mechanism disposed on the feeding rack to limit the tray located at the picking end. Multiple full-load trays equipped with micro-display screens or three-color light-combining prisms can be stacked in the full-load tray stacking mechanism, and multiple empty-load trays after unloading the micro-display screens or three-color light-combining prisms can be stacked in the empty-load tray stacking mechanism. The full-material tray stacking mechanism clamps and fixes multiple full-material trays stacked vertically. It includes two first partition plates arranged at intervals along the extension direction of the feeding conveyor on the feeding frame, a full-material stacking area formed between the two first partition plates, a first lifting mechanism located below the full-material stacking area that can drive multiple full-material trays to descend, and two first clamping mechanisms arranged opposite each other on the feeding frame to clamp and fix multiple full-material trays. The full-material stacking area is located above the feeding conveyor. The first lifting mechanism can drive multiple stacked full-material trays to descend, so that the full-material trays located at the bottom descend and are supported on the feeding conveyor and conveyed forward. The first clamping mechanisms can clamp opposite full-material trays to support the multiple stacked full-material trays.

2. The feeding device for a microdisplay bonding system according to claim 1, characterized in that: The first lifting mechanism includes a first lifting frame located below the full material stacking area, a first lifting plate that can be moved up and down on the first lifting frame, two first support plates that can support multiple full material trays and are disposed opposite to each other on the first lifting plate, a first lifting component that is disposed on the first lifting frame and connects to and drives the first lifting plate to move up and down, and two first guide components that are spaced apart between the first lifting frame and the first lifting plate, with the two first guide components respectively disposed on both sides of the first lifting component.

3. The feeding device for a microdisplay bonding system according to claim 2, characterized in that: The first guide component includes two first guide sleeves spaced apart on the first lifting frame, two first guide rods movably disposed in the two first guide sleeves, a first connecting plate connected to the lower ends of the two first guide rods, and a first limiting post disposed on the first connecting plate. The upper end of the first guide rod is connected to the first lifting plate.

4. The feeding device for a microdisplay bonding system according to claim 1, characterized in that: The first clamping mechanism includes a first clamping plate that can move back and forth relative to the full material stacking area on the feeding rack, a first clamping cylinder that is connected to and drives the first clamping plate to move on the feeding rack, two first sliders that are disposed opposite to each other at the bottom of the first clamping plate, and two first slide rails that are spaced apart on the feeding rack and respectively cooperate with the two first sliders.

5. A feeding device for a microdisplay bonding system according to claim 4, characterized in that: The opposite surfaces of the full material tray and the first clamping plate have one or more inwardly extending clamping holes, and the opposite surfaces of the first clamping plate and the full material tray have one or more clamping portions that can be embedded in the clamping holes.

6. A feeding device for a microdisplay bonding system according to claim 1, characterized in that: The empty material tray stacking mechanism includes two second partition plates arranged at intervals along the extension direction of the feeding conveyor on the feeding frame, an empty material stacking area formed between the two second partition plates, a second lifting mechanism located below the empty material stacking area that can drive the empty material trays to rise, and two fixing mechanisms arranged opposite to each other on the feeding frame to support and fix multiple empty material trays. The second lifting mechanism can drive the empty material trays returning to the empty material stacking area to move upward so that they are supported on the fixing mechanisms. The empty material stacking area is located above the feeding conveyor.

7. A feeding device for a microdisplay bonding system according to claim 6, characterized in that: The fixing mechanism includes two fixed blocks spaced apart along the extension direction of the feeding conveyor, two support blocks respectively rotatably mounted on the two fixed blocks, a first limiting block mounted on the fixed blocks and supported at the bottom of the relative support blocks, and a second limiting block mounted on the fixed blocks to restrict the support blocks from continuing to rotate upward. One section of the support block extends inward into the empty material stacking area. When the empty material tray rises, it can cause the support block to rotate upward until it is restricted by the relative second limiting block, thus releasing the restriction on the empty material tray from continuing to rise. When the empty material tray falls back down, it can cause the support block to rotate downward until the support block is supported on the relative first limiting block. At this time, the support block restricts the empty material tray from continuing to fall, so that the empty material tray is supported on the support block.

8. A feeding device for a microdisplay bonding system according to claim 6, characterized in that: The blocking mechanism is located between adjacent first and second partition plates and includes a blocking frame located below the feeding conveyor, a blocking block that can be moved up and down on the blocking frame, and a blocking cylinder that drives the blocking block to move up and down on the blocking frame. The blocking cylinder can drive the blocking block to move upward to a position above the feeding conveyor to block the flow of a full or empty material tray.

9. A feeding device for a microdisplay bonding system according to claim 1, characterized in that: The limiting mechanism includes a limiting seat located on the feeding rack in front of the material picking end, a limiting cylinder located on the feeding rack on one side of the full material tray, and a limiting plate located at the front end of the limiting cylinder that can abut against the side of the full material tray.

10. A loading and unloading device for a micro-display bonding system, characterized in that: The device includes a base, a first feeding device disposed on the base for conveying a micro display screen, a second feeding device disposed on the base for conveying a three-color combining prism, a unloading device disposed on the base, and a robotic arm disposed on the base. The robotic arm can respectively clamp the micro display screen and the three-color combining prism to the bonding system or clamp the components bonded by the bonding system to the unloading device. The first feeding device and the second feeding device are the feeding devices described in any one of claims 1 to 9.

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