Automatic feeding and discharging detection system and method for display panel

Abstract

The invention relates to an automatic feeding and discharging detection system and method for a display panel, the detection system comprises a feeding and discharging unit, a feeding and discharging transfer manipulator, a transfer station, a detection transfer manipulator and a detection unit, and the detection transfer manipulator is arranged between the detection unit and the transfer station; the loading and unloading transfer manipulator is arranged between the transfer station and the loading and unloading unit; the loading and unloading unit comprises a loading station, a defective product unloading station, a non-defective product unloading station and an empty tray station; the loading and unloading unit is used for loading an empty tray, loading a to-be-detected product tray and unloading a detected product tray; each of the feeding and discharging transfer manipulator and the detection transfer manipulator comprises at least two mechanical arms which are used for synchronously transplanting detected products and to-be-detected products. The loading and unloading transfer manipulator and the detection transfer manipulator are matched with each other, and the product jig is directly grabbed through the manipulator and put into detection equipment; the working efficiency is improved, the equipment structure is optimized, and the equipment space is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of display panel detection, and in particular to a display panel automatic loading and unloading detection system and method. Background Art

[0002] In the production process of display panels, the finished product inspection of display panels is a key process step to ensure cost quality, especially for Micro LED devices. The layout of the sub-modules in the existing Micro LED display panel inspection system structure is unreasonable, resulting in a large space occupation of the entire system and low inspection efficiency. Summary of the invention

[0003] The present invention provides a display panel automatic loading and unloading detection system and method, which has high detection efficiency and occupies little space.

[0004] The technical solution adopted by the present invention is: an automatic loading and unloading detection system for a display panel, characterized in that it includes a loading and unloading unit, a loading and unloading transfer robot, a transfer station, a detection transfer robot and a detection unit, the detection transfer robot is arranged between the detection unit and the transfer station, and is used for transplanting and detecting the product to be tested; the transfer station is used for material transfer between the loading and unloading transfer robot and the detection transfer robot; the loading and unloading transfer robot is arranged between the transfer station and the loading and unloading unit, and is used for loading and unloading and transplanting the product to be tested; the loading and unloading unit includes a loading station, a defective product unloading station, a good product unloading station and an empty tray station, and the loading and unloading unit is used for loading empty trays, loading trays of products to be tested and unloading trays of tested products; the loading and unloading transfer robot and the detection transfer robot both include at least two robotic arms, which are used for synchronously transplanting the tested products and the products to be tested. The loading and unloading transfer robot and the inspection transfer robot cooperate with each other, and the robot directly grabs the product fixture and puts it into the inspection equipment; it improves work efficiency, optimizes the equipment structure, and saves equipment space; the loading and unloading transfer robot and the inspection transfer robot hold the buffer position (transfer station) to improve work efficiency.

[0005] Preferably, the empty tray station, loading station, defective product unloading station and good product unloading station are arranged in a first direction; the loading and unloading unit also includes an empty tray transfer mechanism, which transfers the empty trays on the empty tray station to the defective product unloading station and the good product unloading station; the empty tray transfer mechanism includes a tray fixture and a transfer slide rail for sucking the empty tray, and the tray fixture is arranged on the transfer slide rail and can move linearly along the transfer slide rail. The empty trays are transported by the empty tray transfer mechanism, which effectively ensures the tray supply to the defective product unloading station and the good product unloading station.

[0006] Preferably, the loading station, defective product unloading station, good product unloading station and empty tray station all adopt a belt line transmission mechanism, and the belt line transmission mechanism is provided with a lifting mechanism and a positioning mechanism at the end corresponding to the loading and unloading material transfer robot; the structure is simple and the cost is low.

[0007] Preferably, the loading and unloading transfer robot and the inspection transfer robot both adopt a dual robotic arm structure, and the dual robotic arm structure includes a rotary drive mechanism, a first robotic arm, a second robotic arm and a robotic arm fixing plate, and the robotic arm fixing plate is arranged at the output end of the rotary drive mechanism, and the first robotic arm and the second robotic arm are fixed to the robotic arm fixing plate, and the first robotic arm and the second robotic arm are symmetrically arranged about the rotation axis of the rotary drive mechanism.

[0008] Preferably, the detection station comprises a detection device body, a double-layer sliding mechanism, a position sensor and a positioning cylinder. The detection device body is detachably mounted on the double-layer sliding mechanism, and the detection device body can be pulled out of the frame in a first direction away from the detection transfer manipulator; the position sensor is arranged on the fixed part of the double-layer sliding mechanism, and the positioning cylinder is arranged on the sliding part of the double-layer sliding mechanism; the first direction is perpendicular to the second direction. It is convenient for maintenance without stopping the whole equipment.

[0009] Preferably, the detection unit includes two rows of detection stations arranged side by side, each row of detection stations includes a plurality of detection stations arranged along the second direction; the detection transfer manipulator is arranged between the two rows of detection stations. The layout is ingenious, which can effectively improve work efficiency and save equipment space.

[0010] Preferably, each of the detection stations comprises two layers of sub-detection stations, the upper and the lower. The detection unit adopts a double-row double-layer structure to save equipment space.

[0011] Preferably, the transfer station includes two sub-transfer stations arranged side by side, a rodless cylinder and a code scanning device; the sub-transfer station includes at least two sub-transfer stations arranged along the second direction; the rodless cylinder extends along the first direction and intersects with the two sub-transfer stations, and the rodless cylinder is arranged on the side of the transfer station close to the loading and unloading unit; the code scanning device can reciprocate between the two sub-transfer stations driven by the rodless cylinder, and is used to read the code of the product to be tested. The transfer station is provided with multiple fixture placement positions, which ensures that the loading and unloading transfer robot and the detection transfer robot can work in an interleaved manner, effectively improving work efficiency.

[0012] A display panel automatic loading and unloading detection method of the present invention is applied to the above-mentioned display panel automatic loading and unloading detection system, and is characterized by:

[0013] S1. Place the tray containing the display panel to be tested on the loading station;

[0014] S2. The belt conveyor mechanism on the loading station moves, and the tray carrying the display panel to be tested is transported to the feeding station; the lifting mechanism on the feeding station drives the tray carrying the display panel to be tested to rise;

[0015] S3, a product fixture fixture of the loading and unloading transfer robot grabs the fixture carrying the untested display panel from the material tray carrying the display panel to be tested and places it in the transfer station. At the same time, another product fixture fixture of the loading and unloading transfer robot grabs the fixture carrying the tested display panel on the transfer station for unloading;

[0016] S4, a product jig fixture of the inspection transfer robot grabs the jig carrying the uninspected display panel from the transfer station to load the inspection station, and at the same time, another product jig fixture of the inspection transfer robot places the jig carrying the inspected display panel on the transfer station;

[0017] S5. Repeat the above actions. If the tray on the defective product unloading station or the good product unloading station is full, the belt line transmission mechanism will automatically rotate and transfer to the unloading position to move the tray out.

[0018] Preferably, the display panel to be inspected adopts the AAB inspection method in the inspection unit, that is, each display panel to be inspected is inspected twice in the same inspection device and then inspected once in another inspection device. If all three tests fail, it is unqualified; if one of the three tests passes, the display panel to be inspected is qualified.

[0019] The beneficial effects achieved by the present invention are: the loading and unloading transfer robot and the detection transfer robot cooperate with each other, and the robot directly grabs the product fixture and puts it into the detection equipment; the work efficiency is improved, the equipment structure is optimized, and the equipment space is saved. The present invention has the following advantages:

[0020] 1. The empty trays are transported by the empty tray transfer mechanism, which effectively ensures the tray supply for the unloading stations of defective products and good products;

[0021] 2. Both the loading and unloading transfer robot and the inspection transfer robot adopt a double-arm structure, which can quickly replace the fixture and save work time;

[0022] 3. The detection device adopts a drawer-type structure and can be pulled out. During maintenance, the entire equipment does not need to be shut down, and only the detection device that needs maintenance needs to be pulled out separately;

[0023] 4. The transfer station is equipped with multiple fixture placement positions, which ensures that the loading and unloading transfer robot and the inspection transfer robot can work alternately, effectively improving work efficiency;

[0024] 5. The entire detection system has a compact structure and saves feeding positioning cameras compared to existing equipment;

[0025] 6. The use of manipulators saves space and improves speed;

[0026] 7. The detection equipment is arranged in upper and lower layers to save space. A single manipulator can correspond to 12 test machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the detection unit, the detection transfer robot and the transfer station;

[0029] Figure 3 It is the structural front view of the detection unit and the detection transfer robot;

[0030] Figure 4 This is a schematic diagram of the structure of a sub-detection station in an embodiment of the present application;

[0031] Figure 5 It is a structural schematic diagram of the loading and unloading unit;

[0032] Figure 6 It is a structural diagram of the belt line transmission mechanism and the lifting mechanism;

[0033] Figure 7 Schematic diagram of the process of loading materials into the AGV feeding trolley;

[0034] Figure 8-9 It is a structural schematic diagram of the empty tray transfer mechanism;

[0035] Fig.10 This is a schematic diagram of the structure of a loading and unloading transfer robot according to an embodiment of the present invention;

[0036] Fig.11 It is a structural schematic diagram of the transfer station;

[0037] Fig.12 It is a work flow chart of the present invention;

[0038] In the figure: 1. Loading and unloading unit; 11. Loading station; 12. Unloading station for defective products; 13. Unloading station for good products; 14. Station for empty tray; 15. Belt line transmission mechanism; 16. Lifting mechanism; 17. Clamping mechanism; 2. Detection unit; 21. Detection device; 211. Detection device body; 212. Fixed plate; 213. Sliding plate; 214. Positioning cylinder; 215. Position sensor; 3. Loading and unloading transfer robot; 31. First robot arm; 32. Second robot arm; 33. Robot arm fixing plate; 34. Rotating axis; 4. Detection and transfer robot; 5. Transfer station; 51. Sub-transfer station; 52. Rodless cylinder; 53. Barcode scanning device; 54. Fixture placement position; 6. Empty tray transfer mechanism; 61. Transfer slide rail; 62. Tray clamp; 7. AGV trolley; 8. Tray. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1-11 As shown, a display panel automatic loading and unloading detection system and method of the present invention comprises a loading and unloading unit 1, a loading and unloading transfer robot 3, a detection transfer robot 4 and a detection unit 2, the loading and unloading unit 1 comprises a loading station 11, a defective product unloading station 12, a good product unloading station 13 and an empty tray station 14, the empty tray station 14, the loading station 11, the defective product unloading station 12 and the good product unloading station 13 are arranged along a first direction, the detection unit 2 comprises at least one detection station, and the display panel to be detected The display panel is placed on the loading station 11, and the loading and unloading transfer robot 3 can transfer the display panel to be tested on the loading station 11 to the transfer station 5, or transfer the tested display panel on the transfer station 5 to the defective product unloading station 12 or the good product unloading station 13; the detection transfer robot 4 transfers the display panel to be tested on the transfer station 5 to the detection station, or transfers the tested display panel on one detection station to another detection station, or transfers the tested display panel on the detection station to the transfer station 5. The present invention adopts a double-group structure (loading and unloading unit 1 and detection unit 2), which can simultaneously meet the material unloading needs of two groups of manipulators (loading and unloading transfer manipulator 3 and detection transfer manipulator 4), thereby improving work efficiency and saving equipment space; the loading and unloading transfer manipulator 3 and the detection transfer manipulator 4 hold the buffer position (transfer station 5), which can effectively improve efficiency; the manipulator is used to directly grasp the product fixture, and the manipulator clamp adopts a bearing design, so there is no need for a camera to take pictures, and the fixture can be directly clamped.

[0041] In this embodiment, the loading and unloading transfer robot 3 transfers the display panel to be inspected on the loading station 11 to the transfer station 8, and at the same time transfers the inspected display panel on the transfer station 8 to the defective product unloading station 12 or the good product unloading station 13; the inspection transfer robot 4 transfers the display panel to be inspected on the transfer station 8 to the inspection station, and at the same time transfers the inspected display panel on the inspection station to the transfer station 8; the inspection transfer robot 4 can also transfer the inspected display panel on one inspection station to another inspection station for further inspection (i.e., jig transfer between inspection stations).

[0042] Combination Figure 2-3 In this embodiment, the detection unit includes two rows and two layers of symmetrically arranged detection devices 21 (a total of 12 in the figure), and the display panel to be detected adopts the AAB detection method in the detection unit, that is, each display panel to be detected is detected twice in the same detection device 21, and then detected once in another detection device 21; if all three tests fail, it is unqualified; if one of the three tests is qualified, the display panel to be detected is qualified to avoid false detection.

[0043] In this embodiment, the detection and transfer robot 4 is arranged between two rows of detection devices 21 (6 on one side, arranged in double layers), the transfer station 5 is arranged between the loading and unloading unit 1 and the detection unit 2, and the loading and unloading transfer robot 3 is arranged between the transfer station 5 and the loading and unloading unit 1; the layout is ingenious, which can effectively improve work efficiency and save equipment space.

[0044] Combination Figure 4 As shown, in this embodiment, the detection device 21 adopts a drawer-type structure and can be drawn out; the detection device 21 includes a detection device body 211, a fixed plate 212 and a sliding plate 213, the fixed plate 212 is fixed on the frame, the sliding plate 213 is set on the fixed plate 212 through a slide rail, and the detection device body 211 is set on the sliding plate 213 through a slide rail; a position sensor 215 is provided on the fixed plate 212, which is used to detect the position of the detection device 21 and ensure that the detection device 21 is correctly located at the detection position; a positioning cylinder 214 is provided on the sliding plate 213, and when the detection device 21 is correctly located at the detection position, it is fixed by the positioning cylinder 214. The detection device 21 adopts a drawer-type structure. When one of the detection devices 21 fails, the faulty detection device 21 can be drawn out, and other detection devices 21 can operate normally.

[0045] Combination Fig.10As shown, both the loading and unloading transfer robot 3 and the detection transfer robot 4 adopt a double clamp structure, which can clamp two fixtures at the same time to improve work efficiency. Both the loading and unloading transfer robot 3 and the detection transfer robot 4 include a robot arm fixing plate 33, a first robot arm 31 and a second robot arm 32. The robot arm fixing plate 33 is connected to the rotating shaft 34 and can rotate 360° along the axial direction of the rotating shaft 34; the first robot arm 31 and the second robot arm 32 are fixedly arranged at 180° on both sides of the robot arm fixing plate 33.

[0046] Combination Figure 8-9 As shown, in this embodiment, the loading and unloading unit 1 also includes an empty tray transfer mechanism 6, which transfers the empty tray 8 on the empty tray station 14 to the defective product unloading station 12 and the good product unloading station 13; the empty tray transfer mechanism 6 includes a tray clamp 61 and a transfer slide rail 62 for sucking the empty tray 8, and the tray clamp 61 is set on the transfer slide rail 62 and can move linearly along the transfer slide rail 62. The empty tray 8 is transported by the empty tray transfer mechanism 6, which effectively ensures the supply of trays 8 to the defective product unloading station 12 and the good product unloading station 18.

[0047] Combination Fig.11 As shown, the transfer station 5 includes sub-transfer stations 51 symmetrically arranged on both sides, and a rodless cylinder 52 and a code scanning device 53 arranged between the sub-transfer stations 51 on both sides; each sub-transfer station 51 extends in the second direction and is provided with at least two fixture placement positions 54; the rodless cylinder 52 is arranged along the first direction and is arranged at the end of the sub-transfer station 51; the code scanning device 53 can move between the sub-transfer stations 51 on both sides along the rodless cylinder 52 to scan the undetected display panel on the sub-transfer station 51. The transfer station 5 is provided with a plurality of fixture placement positions 54, which ensures that the loading and unloading transfer robot 3 and the detection transfer robot 4 can work in an interleaved manner, effectively improving work efficiency.

[0048] Combination Figure 5-7 As shown, in this embodiment, the loading station 11, the defective product unloading station 12, the good product unloading station 13 and the empty tray station 14 all use a belt line transmission mechanism 15, which has a simple structure and low cost. A lifting mechanism 16 is provided at one end of the belt line transmission mechanism 15 corresponding to the loading and unloading transfer robot 3.

[0049] In this embodiment, the loading and unloading transfer robot 3 is a four-axis robot, and the detection transfer robot 4 is a six-axis robot.

[0050] like Fig.12As shown, the working process of the present invention is: a person or an AGV trolley 7 loads the material (tray), and the tray 8 is placed, and the person clicks a button; the belt line transmission mechanism 15 on the loading station 11 moves, and the tray 8 is transferred to the feeding position; the lifting mechanism 16 on the feeding position drives the tray 8 to rise, and after it is in place, the uppermost tray 8 is clamped and positioned by the clamping mechanism 17 (positioning cylinder positioning); a product fixture fixture 31 of the loading and unloading transfer robot 3 grabs the undetected display panel fixture from the tray 8, and the loading and unloading transfer robot 3 rotates to place the undetected display panel fixture at the transfer station 5; another product fixture fixture 31 of the loading and unloading transfer robot 3 grabs the detected display panel fixture at the same time; a detection transfer robot 4 The product jig fixture grabs the uninspected display panel jig from the transfer station 5, and another product jig fixture places the inspected display panel jig; the inspection transfer robot 4 rotates to place the uninspected display panel jig on the inspection device 21 for inspection; after the inspection is completed, the inspection transfer robot 4 grabs the inspected display panel jig and places it on the transfer station 5; the loading and unloading transfer robot 3 places the inspected display panel jig in the material tray 8 above the defective product unloading station 12 or the good product unloading station 13; repeat the above actions, if the material tray on the defective product unloading station 12 or the good product unloading station 13 is full of 10 layers, the belt line transmission mechanism 15 automatically rotates and transmits to the discharge position, the equipment indicator light comes on, and the personnel move the material tray 8 out.

[0051] It should be noted that the description of the above technical solutions is exemplary, and this specification can be embodied in different forms and should not be interpreted as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the present invention thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solutions of the present invention are limited only by the scope of the claims.

[0052] Finally, it should be pointed out that the above embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. A display panel automatic loading and unloading detection system, characterized in that: It includes a loading and unloading unit, a loading and unloading transfer robot, a transfer station, a detection transfer robot and a detection unit. The detection transfer robot is arranged between the detection unit and the transfer station, and is used for transplanting and detecting the product to be tested; the transfer station is used for material transfer between the loading and unloading transfer robot and the detection transfer robot; the loading and unloading transfer robot is arranged between the transfer station and the loading and unloading unit, and is used for loading and unloading and transplanting the product to be tested; the loading and unloading unit includes a loading station, a defective product unloading station, a good product unloading station and an empty tray station, and the loading and unloading unit is used for loading empty trays, loading trays of products to be tested and unloading trays of tested products; the loading and unloading transfer robot and the detection transfer robot both include at least two robotic arms, which are used for synchronously transplanting the tested products and the products to be tested.

2. The automatic loading and unloading detection system for display panels according to claim 1 is characterized in that: The empty tray station, loading station, defective product unloading station and good product unloading station are arranged along the first direction; the loading and unloading unit also includes an empty tray transfer mechanism, which transfers the empty trays on the empty tray station to the defective product unloading station and the good product unloading station; the empty tray transfer mechanism includes a tray clamp and a transfer slide rail for sucking the empty tray, and the tray clamp is set on the transfer slide rail and can move linearly along the transfer slide rail.

3. The automatic loading and unloading detection system for display panels according to claim 1 is characterized in that: The loading station, the defective product unloading station, the good product unloading station and the empty tray station all adopt a belt line transmission mechanism, and the end of the belt line transmission mechanism corresponding to the loading and unloading transfer robot is provided with a lifting and positioning mechanism.

4. The automatic loading and unloading detection system for display panels according to claim 1 is characterized in that: The loading and unloading transfer robot and the inspection transfer robot both adopt a dual robotic arm structure, which includes a rotation drive mechanism, a first robotic arm, a second robotic arm and a robotic arm fixing plate, wherein the robotic arm fixing plate is arranged at the output end of the rotation drive mechanism, the first robotic arm and the second robotic arm are fixed to the robotic arm fixing plate, and the first robotic arm and the second robotic arm are symmetrically arranged about the rotation axis of the rotation drive mechanism.

5. The automatic loading and unloading detection system for display panels according to claim 1 is characterized in that: The detection unit comprises two rows of detection stations arranged side by side, each row of detection stations comprises a plurality of detection stations arranged along the second direction; the detection transfer robot is arranged between the two rows of detection stations.

6. The display panel automatic loading and unloading detection system according to claim 5, characterized in that: The inspection station comprises an inspection device body, a double-layer sliding mechanism, a position sensor and a positioning cylinder. The inspection device body can be detachably mounted on the double-layer sliding mechanism, and the inspection device body can be pulled out of the frame in a first direction away from the inspection transfer robot; the position sensor is arranged on the fixed part of the double-layer sliding mechanism, and the positioning cylinder is arranged on the sliding part of the double-layer sliding mechanism; the first direction is perpendicular to the second direction.

7. The automatic loading and unloading detection system for display panels according to claim 5, characterized in that: Each of the inspection stations comprises two layers of sub-inspection stations, an upper layer and a lower layer.

8. The display panel automatic loading and unloading detection system according to claim 1, characterized in that: The transfer station includes two sub-transfer stations arranged side by side, a rodless cylinder and a code scanning device; the sub-transfer station includes at least two sub-transfer stations arranged along the second direction; the rodless cylinder extends along the first direction and intersects with the two sub-transfer stations, and the rodless cylinder is arranged on the side of the transfer station close to the loading and unloading unit; the code scanning device can reciprocate between the two sub-transfer stations driven by the rodless cylinder, and is used to read the code of the product to be tested.

9. A display panel automatic loading and unloading detection method, applied to the display panel automatic loading and unloading detection system according to any one of claims 1 to 8, characterized in that: S1. Place the tray containing the display panel to be tested on the loading station; S2. The belt conveyor mechanism on the loading station moves, and the tray carrying the display panel to be tested is transported to the feeding station; the lifting mechanism on the feeding station drives the tray carrying the display panel to be tested to rise; S3, a product fixture fixture of the loading and unloading transfer robot grabs the fixture carrying the untested display panel from the material tray carrying the display panel to be tested and places it in the transfer station. At the same time, another product fixture fixture of the loading and unloading transfer robot grabs the fixture carrying the tested display panel on the transfer station for unloading; S4, a product jig fixture of the inspection transfer robot grabs the jig carrying the uninspected display panel from the transfer station to load the inspection station, and at the same time, another product jig fixture of the inspection transfer robot places the jig carrying the inspected display panel on the transfer station; S5. Repeat the above actions. If the tray on the defective product unloading station or the good product unloading station is full, the belt line transmission mechanism will automatically rotate and transfer to the unloading position to move the tray out.

10. The display panel automatic loading and unloading detection method according to claim 9, characterized in that: The display panel to be tested adopts the AAB testing method in the testing unit, that is, each display panel to be tested is tested twice in the same testing device and then tested once in another testing device. If all three tests fail, it is unqualified; if one of the three tests passes, the display panel to be tested is qualified.

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