Automatic detection device for display panel

Abstract

The utility model discloses an automatic detection device for a display panel, and belongs to the technical field of screen detection. Comprising a case, and a four-station rotary table, a code scanning structure, a feeding manipulator, a discharging manipulator, a screen lightening structure, a visual detection structure, a feeding bin and two discharging bins which are arranged in the case, and two screen fixing jigs are arranged on each station; at the feeding station, the two screen fixing jigs are arranged side by side in the left-right direction and are arranged in a central symmetry mode, and the two FPC cables are arranged side by side in the front-back direction and are opposite. The feeding bin is located right in front of the four-station rotary table, the feeding mechanical arm is located between the feeding bin and the four-station rotary table and comprises two screen suction cups arranged side by side in the left-right direction or in the left-right direction, and the two discharging bins are arranged side by side in the left-right direction and located on the front right portion of the four-station rotary table. The discharging machine comprises two screen suction cups which are arranged front and back side by side or left and right side by side. The screen lightening structure can move to the position over the position between the two screen fixing jigs and can lighten the two screens at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of screen detection, and particularly relates to an automatic detection device for a display panel. Background Technique

[0002] With the popularization and upgrading of smart devices such as smart phones and smart watches, the production volume of their main component, the glass screen, is also extremely large. To ensure the production quality of the screen, each screen needs to be powered on for inspection.

[0003] For example, the patent with the application number CN202121945000.0 discloses a rotary mobile phone screen detection component, including a turntable, a driving mounting seat and a light source bracket installed under the turntable, and a central mounting seat installed at the center of the turntable; the left, front, right, and rear parts of the turntable are respectively provided with a loading station, a detection station, a blanking station, and a cleaning station, and clamps are provided at the loading station, the detection station, the blanking station, and the cleaning station; the left and right parts of the driving mounting seat are connected with a cylinder push plate, the outer side of the cylinder push extends upward to the edge of the turntable and can be connected with the clamp; a speed reducer is installed on the driving mounting seat, the output end and the input end of the speed reducer are respectively connected with a cam divider and a motor, and the cam divider is drivingly connected with the bottom end of the turntable; a light source bracket is arranged below the front part of the turntable, and a backlight corresponding to the detection station is installed at the top of the light source bracket; an image acquisition component, an electrical measurement mounting plate, and a probe mounting plate are installed on the central mounting seat, an electrical measurement machine is installed on the electrical measurement mounting plate, a probe device connected with the electrical measurement machine is installed on the probe mounting plate, the image acquisition component and the probe device both correspond to the detection station, the image acquisition component is located above the detection station, and the probe device is located behind the detection station.

[0004] For example, the patent with the application number CN202111283789.2 discloses a screen detection device, which successively includes a loading component, a code scanning component, a shape detection mechanism, a position detection mechanism, a dimension detection mechanism, and a blanking component along the flow direction of the screen; the code scanning component can identify the two-dimensional code of the screen; the shape detection mechanism can detect the shape of the holes on the screen; the position detection mechanism can detect the relative position between the holes on the screen and the periphery of the corresponding screen; the dimension detection mechanism can detect the dimensions and roundness of the holes on the screen.

[0005] The existing automatic detection device includes a chassis and a four-station turntable, a code scanning structure, a feeding manipulator, a discharging manipulator, a screen lighting structure, a vision detection structure, etc. inside it. The four-station turntable is provided with four stations in sequence along the rotation direction. The four stations are, in sequence, a feeding station, a code scanning station, a detection station, and a discharging station. The feeding station is located at the front of the four-station turntable, and the discharging station is located at the right of the four-station turntable. A screen fixing fixture is provided on each station. The code scanning structure is located at the code scanning station, and the screen lighting structure and the vision detection structure are both located at the detection station. Both the feeding manipulator and the discharging manipulator can move left and right, forward and backward, and vertically. In the prior art, one or two screen fixing fixtures are provided on each station. If there are two, the two screen fixing fixtures are arranged side by side and in the same direction. Correspondingly, two screen lighting structures need to be provided, and the structure is complex (it needs to occupy more space, and a corresponding motion structure needs to be set. The four stations of the four-station turntable cannot ensure complete consistency, resulting in that when each station moves to the screen lighting structure, due to high detection accuracy, both of the two screen lighting structures need to be adjusted). Utility Model Content

[0006] In order to solve the above problems, an embodiment of the present utility model provides an automatic detection device for a display panel, which has high efficiency. The technical solution is as follows:

[0007] An embodiment of the present utility model provides an automatic detection device for a display panel, which includes a chassis 1, a four-station turntable 2, a code scanning structure, a feeding manipulator 3, a discharging manipulator 5, a screen lighting structure 4, and a vision detection structure inside the chassis 1. The four-station turntable 2 is provided with four stations in sequence along the rotation direction, and the four stations are a feeding station, a code scanning station, a detection station, and a discharging station in sequence. The feeding station is located at the front of the four-station turntable 2, and the discharging station is located at the right of the four-station turntable 2. A screen fixing fixture 6 is provided on each station. The code scanning structure is located at the code scanning station, and the screen lighting structure 4 and the vision detection structure are both located at the detection station. The feeding manipulator 3 and the discharging manipulator 5 can both move in the left-right direction, the front-back direction, and the vertical direction. The automatic detection device further includes a feeding bin 7 at the front inside the chassis 1 and two discharging bins 8. Two screen fixing fixtures 6 are provided on each station. At the feeding station, the two screen fixing fixtures 6 are arranged side by side left and right and are symmetrically arranged at the center. The FPC cables 10 of the two screens 9 are arranged side by side front and back and are in opposite directions. The feeding bin 7 is located directly in front of the four-station turntable 2. The feeding manipulator 3 is located between the feeding bin 7 and the four-station turntable 2 and includes two screen suction cups arranged side by side left and right or side by side left and right. The two discharging bins 8 are arranged side by side left and right and are located at the right front of the four-station turntable 2. The discharging manipulator 5 is located on the right side of the discharging station, is located directly behind the discharging bin 8, and includes two screen suction cups arranged side by side front and back or side by side left and right. The screen suction cup can move vertically and can rotate. The screen lighting structure 4 is located behind the four-station turntable 2, can move to directly above the two screen fixing fixtures 6, and can light the two screens 9 simultaneously.

[0008] Among them, the vision detection structure in the embodiment of the present utility model includes a bracket, a camera 91 and a light source 92 on the bracket. The light source 92 is located directly above the detection station, and the camera 91 is located directly above the light source 92.

[0009] Among them, the screen fixing fixture 6 in the embodiment of the present utility model includes a rectangular groove 61 and two pneumatic clamping structures 62 on two sides of the rectangular groove 61. At each station, a support platform 63 for supporting the FPC cable 10 is provided between the two rectangular grooves 61. The screen 9 is located at a corner of the rectangular groove 61 close to the support platform 63. At the feeding station, the rectangular groove 61 is arranged in the left-right direction, the support platform 63 is arranged in the front-back direction and is located at the midpoint of the connection line of the two rectangular grooves 61. One pneumatic clamping structure 62 is located in front of or behind the screen 9, and the other pneumatic clamping structure 62 is located on the left or right side of the screen 9 and is arranged away from the support platform 63.

[0010] Among them, the screen lighting structure 4 in the embodiment of the present utility model includes a three-axis manipulator, an FPC cable connector on the three-axis manipulator, and a positioning pin vertically arranged at the bottom of the FPC cable connector. The three-axis manipulator is located behind the four-station turntable 2. The FPC cable connector is arranged in the front-back direction and can move above the support platform 63 at the detection station. There are two groups of probes arranged side by side in the front-back direction on it. The two groups of probes are respectively matched with two FPC cables 10 and can move directly above the two FPC cables 10. A positioning hole matched with the positioning pin is arranged on the support platform 63. During detection, the probe presses on the corresponding FPC cable 10, and the positioning pin is inserted into the positioning hole.

[0011] Among them, the feeding bin 7 and the discharging bin 8 in the embodiment of the present utility model both include a bin body 71, a multi-layer lifting frame in the bin body 71, multi-layer drawer trays 72 arranged side by side up and down on the multi-layer lifting frame, a pulling-out structure 73 behind the multi-layer lifting frame, and a clamping structure 74 at the rear end of the pulling-out structure 73 that can clamp the drawer tray 72. The front and rear sides of the bin body 71 are open. A door that can be opened is arranged on the front side of the chassis 1 at the position of the bin body 71. The multi-layer lifting frame can move up and down step by step so that each layer of drawer tray 72 can be aligned with the clamping structure 74. The pulling-out structure 73 is located at the rear side of the lower part of the bin body 71. The drawer tray 72 can be pulled forward and backward from the multi-layer lifting frame, and a tray 11 is placed on it. The pulling-out structure 73 can move in the front-back direction. During detection, only one layer of drawer tray 72 corresponding to the clamping structure 74 in the feeding bin 7 is pulled backward, and only one layer of drawer tray 72 corresponding to the clamping structure 74 in the two discharging bins 8 is pulled backward.

[0012] Specifically, the pulling-out structure 73 in the embodiment of the present utility model includes a support slide arranged in the front-back direction and a translation mechanism that can move in the front-back direction on the support slide. The drawer tray 72 can slide in the front-back direction on the support slide. The clamping structure 74 is arranged on the translation mechanism and can move vertically. It is located directly above the rear end of the corresponding layer of drawer tray 72. A groove matched with the clamping structure 74 is arranged at the rear end of the upper side of the drawer tray 72. When pulling the drawer tray 72, the drawer tray 72 slides on the support slide, and the clamping structure 74 presses downward into the groove.

[0013] Among them, even-numbered placement units are arranged side by side in the front-back direction on the tray 11 in the embodiment of the present utility model. Each column of placement units includes a plurality of placement slots arranged side by side left and right. All the placement slots are arranged in a rectangular array. The placement slots are arranged in the front-back direction and are matched with the screen 9. Every two columns of placement units form a group, and the FPC cables 10 of the screens 9 on them are arranged oppositely.

[0014] Among them, the discharging manipulator 5 in the embodiment of the present utility model includes a first X-axis assembly arranged in the left-right direction, a first Y-axis assembly arranged in the front-back direction and located on the front side of the first X-axis assembly, a first Z-axis assembly arranged vertically on the first Y-axis assembly, two first lifting mechanisms arranged side by side in the front-back direction on the first Z-axis assembly, a first rotating mechanism on the first lifting mechanism, and a first screen suction cup arranged vertically on the first rotating mechanism. The first X-axis assembly is located at the right rear of the four-station turntable 2. The first Y-axis assembly can move in the left-right direction on the first X-axis assembly. The first Z-axis assembly can move in the front-back direction on the first Y-axis assembly and is located directly above the pulling structure 73 of the discharging bin 8. The first lifting mechanism can move vertically, and the first rotating mechanism can rotate 90°. During discharging, the two first screen suction cups are located directly above the two screens 9 at the discharging station.

[0015] Among them, the feeding manipulator 3 in the embodiment of the present utility model includes a second Y-axis assembly arranged in the front-back direction, a second X-axis assembly arranged in the left-right direction and located on the right side of the second Y-axis assembly, a second Z-axis assembly arranged vertically on the second X-axis assembly, two second lifting mechanisms arranged side by side in the front-back direction at the lower part of the second Z-axis assembly, a second rotating mechanism on the second lifting mechanism, and a second screen suction cup arranged vertically on the second rotating mechanism. The second Y-axis assembly is located on the left side of the four-station turntable 2 and the feeding bin 7. The second X-axis assembly can move in the front-back direction on the second Y-axis assembly. The second Z-axis assembly can move in the left-right direction on the second Y-axis assembly and is located directly above the pulling structure 73 of the feeding bin 7. The second lifting mechanism can move vertically, and the second rotating mechanism can rotate 90°. During feeding, the two second screen suction cups are respectively located directly above the two placement slots corresponding to adjacent columns on the tray 11.

[0016] Among them, the two discharging bins 8 in the embodiment of the present utility model are respectively a qualified bin and a non-qualified bin. The qualified bin is arranged close to the four-station turntable 2, and the non-qualified bin is arranged far from the four-station turntable 2.

[0017] The beneficial effects brought by the technical solution provided by the embodiment of the present utility model are as follows: The embodiment of the present utility model provides an automatic detection device for display panels. Each station can detect two screens simultaneously. The screen lighting structure can light up two screens simultaneously, and only one screen lighting structure needs to be controlled to move. The efficiency is improved (speed ≥ 600 UPH). The feeding and discharging are carried out in the form of bins, which is convenient for feeding and discharging two screens simultaneously (the screens are arranged regularly, which is convenient for putting in and taking out the screens). Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the automatic detection device for display panels provided by the embodiment of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of a four-station turntable;

[0020] Figure 3 It is a schematic structural diagram of a feeding bin or a discharging bin;

[0021] Figure 4 It is a side view of a feeding bin or a discharging bin;

[0022] Figure 5 It is a schematic structural diagram of the combination of a screen lighting structure and a visual inspection structure.

[0023] In the figure: 1 chassis, 2 four-station turntable, 3 feeding manipulator, 4 screen lighting structure, 5 discharging manipulator, 6 screen fixing jig, 7 feeding bin, 8 discharging bin, 9 screen, 10 FPC cable, 11 tray;

[0024] 61 rectangular groove, 62 pneumatic clamping structure, 63 support platform;

[0025] 71 bin body, 72 drawer tray, 73 pulling-out structure, 74 clamping structure;

[0026] 91 camera, 92 light source. Specific embodiments

[0027] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] Embodiment 1

[0029] See Figures 1-5, Embodiment 1 provides an automatic detection device for a display panel. The device includes a chassis 1 and a four-station turntable 2, a code scanning structure (not shown in the figure), a feeding manipulator 3, a discharging manipulator 5, a screen lighting structure 4, a vision detection structure, a feeding bin 7, and two discharging bins 8 etc. inside it. Among them, the chassis 1 is arranged in the left-right direction, and openable doors are provided at its front side and at the positions of the feeding bin 7 and the two discharging bins 8 to facilitate the insertion and removal of the tray 11. The four-station turntable 2 and the discharging manipulator 5 are located at the rear part inside the chassis 1, and the feeding bin 7 and the two discharging bins 8 are located at the front part inside the chassis 1. The four-station turntable 2 is provided with four stations in sequence along the rotation direction, and it can rotate by 90° indexing. The four stations are a feeding station, a code scanning station, a detection station, and a discharging station in sequence, and the included angle between two adjacent stations is 90°. The feeding station is located at the front part of the four-station turntable 2, the code scanning station is located at the left part of the four-station turntable 2, the detection station is located at the rear part of the four-station turntable 2, and the discharging station is located at the right part of the four-station turntable 2. The code scanning structure is located at the code scanning station and is a conventional structure, specifically a camera. Both the screen lighting structure 4 and the vision detection structure are located at the detection station. The feeding manipulator 3 and the discharging manipulator 5 can move in the left-right direction, the front-back direction, and the vertical direction. The feeding manipulator 3 can move between the feeding bin 7 and the feeding station, and the discharging manipulator 5 can move between the two discharging bins 8 and the discharging station. Two screen fixing jigs 6 are provided on each station. At the feeding station, the two screen fixing jigs 6 are arranged side by side left and right and are centrosymmetrically arranged. At the code scanning station and the discharging station, two screen fixing jigs 6 are arranged side by side front and back (centrosymmetrically arranged), and at the detection station, two screen fixing jigs 6 are arranged side by side left and right (centrosymmetrically arranged). The FPC cables 10 of the two screens 9 (respectively fixed on the two screen fixing jigs 6) are arranged side by side front and back and are in opposite directions. The feeding bin 7 is located directly in front of the four-station turntable 2. The feeding manipulator 3 is located between the feeding bin 7 and the four-station turntable 2 and includes two screen suction cups arranged side by side left and right or side by side left and right. The two discharging bins 8 are arranged side by side left and right. They are located at the right front of the four-station turntable 2 and are respectively a qualified product bin (for placing the qualified screens detected) and a non-qualified product bin (for placing the unqualified screens detected). The qualified product bin (located on the left) is arranged close to the four-station turntable 2, and the non-qualified product bin (located on the right) is arranged far from the four-station turntable 2. The discharging manipulator 5 is located on the right side of the discharging station and is directly behind the discharging bins 8. It includes two screen suction cups arranged side by side front and back or side by side left and right. The screen suction cup can move vertically and can rotate (can rotate by 90°, and can rotate by 180°, 270° as required). The screen lighting structure 4 is located behind the four-station turntable 2, and it can move to directly above the two screen fixing jigs 6 and can light the two screens 9 simultaneously.

[0030] Among them, referring to Figure 5, in the visual inspection structure in the embodiment of the present utility model, it includes a bracket and a camera 91, a light source 92, etc. on the bracket. The bracket is located behind the four-station turntable 2. The light source 92 is a horizontally arranged annular light source or linear light source and is located directly above the inspection station. The camera 91 is located directly above the light source 92 and is arranged vertically downward.

[0031] Among them, referring to Figures 1-2 , the screen fixing fixture 6 in the embodiment of the present utility model includes a rectangular groove 61 and two pneumatic clamping structures 62 on two of its sides (one long side and one wide side), etc. At each station, a support platform 63 for supporting the FPC cable 10 is provided between the two rectangular grooves 61; the screen 9 is located at a corner of the rectangular groove 61 close to the support platform 63. At the feeding station, the rectangular groove 61 is arranged in the left-right direction, and the support platform 63 is arranged in the front-back direction and is located at the midpoint of the connection line of the two rectangular grooves 61. Similarly, at the code scanning station and the discharging station, the two rectangular grooves 61 are arranged side by side in the front-back direction; at the inspection station, the two rectangular grooves 61 are arranged side by side in the left-right direction. One pneumatic clamping structure 62 (capable of moving in the front-back direction) is located on the front side or the rear side of the screen 9, and the other pneumatic clamping structure 62 (capable of moving in the left-right direction) is located on the left side or the right side of the screen 9 and is arranged away from the support platform 63. Specifically, at the feeding station, in the left rectangular groove 61, the screen 9 is located at the right end of the front part of the rectangular groove 61, one pneumatic clamping structure 62 is located on the rear side of the screen 9, and the other pneumatic clamping structure 62 is located on the left side of the screen 9; in the right rectangular groove 61, the screen 9 is located at the left end of the rear part of the rectangular groove 61, one pneumatic clamping structure 62 is located on the front side of the screen 9, and the other pneumatic clamping structure 62 is located on the right side of the screen 9. The pneumatic clamping structure 62 includes a cylinder and a clamping plate on its telescopic rod (arranged in the left-right direction or the front-back direction), etc. The four cylinders at the same station can be driven synchronously.

[0032] Among them, the screen lighting structure 4 in the embodiment of the present utility model includes a three-axis manipulator, an FPC cable connector on the three-axis manipulator, and a positioning pin vertically arranged at the bottom of the FPC cable connector, etc. The three-axis manipulator is located behind the four-station turntable 2, and it can move in the front-back direction, the left-right direction, and the vertical direction. It is a conventional structure and requires very high precision. The FPC cable connector is arranged in the front-back direction, and it can move above the support platform 63 at the inspection station. Two groups of probes are arranged side by side on it in the front-back direction. Specifically, the gold fingers of the two FPC cables 10 are arranged side by side in the front-back direction, then the two groups of probes are arranged side by side in the front-back direction and are arranged in the reverse direction. The two groups of probes are respectively matched with the two FPC cables 10 and can move directly above the two FPC cables 10. The support platform 63 is provided with a positioning hole (specifically a round hole with a clearance fit with the positioning pin) for cooperating with the positioning pin. During inspection, the probes press against the corresponding FPC cables 10, and the positioning pin is inserted into the positioning hole.

[0033] Among them, the feeding bin 7 and the discharging bin 8 in the embodiments of the present utility model both include a bin body 71, a multi-layer lifting frame inside the bin body 71, multi-layer drawer trays 72 arranged side by side up and down on the multi-layer lifting frame, a pulling-out structure 73 behind the multi-layer lifting frame, and a clamping structure 74 at the rear end of the pulling-out structure 73 that can clamp the drawer tray 72, etc. The bin body 71 is a rectangular bin body structure, which is located inside the chassis 1 and has open front and rear sides. The multi-layer lifting frame can move up and down step by step so that each layer of the drawer tray 72 can be aligned with the clamping structure 74 to facilitate pulling out each layer of the drawer tray 72 successively. Specifically, a servo lifting mechanism (specifically a screw lifting structure) is provided between the multi-layer lifting frame and the bin body 71, and slide rails (vertically arranged) for the multi-layer lifting frame to slide are provided on the left and right sides of the bin body 71. The pulling-out structure 73 is located at the rear side of the lower part of the bin body 71, and includes a support slide table arranged in the front-rear direction and a translation mechanism that can move in the front-rear direction on the support slide table, etc. The drawer tray 72 is arranged in the front-rear direction, and is slidably arranged on the multi-layer lifting frame (similar to a drawer structure). It can be pulled forward (for inserting the tray 11 before detection or taking out the tray 11 after detection) and backward (cooperating with the manipulator) from the multi-layer lifting frame (when pulled backward, the drawer tray 72 can slide in the front-rear direction on the support slide table). A tray 11 is placed on it (it can be positioned and clamped through a corresponding clamping structure (a conventional structure) on the drawer tray 72). The pulling-out structure 73 can move in the front-rear direction and is used to pull the drawer tray 72 back and forth. The clamping structure 74 is arranged on the translation mechanism, can move vertically, is located directly above the rear end of the corresponding layer of the drawer tray 72, and can specifically be a pneumatic clamping structure that can move up and down. A groove for cooperating with the clamping structure 74 is provided at the rear end of the upper side of the drawer tray 72. When pulling the drawer tray 72, the drawer tray 72 (rollers or chutes can be provided at the bottom) is slidably arranged on the support slide table, and the clamping structure 74 presses downward into the groove. During detection, only one layer of the drawer tray 72 corresponding to the clamping structure 74 in the feeding bin 7 is pulled backward, and only one layer of the drawer tray 72 corresponding to the clamping structure 74 in the two discharging bins 8 is pulled backward. Among them, two front horizontal slide rails (arranged in the front-rear direction) for the drawer tray 72 to slide are arranged side by side left and right on the lifting frame, and two rear horizontal slide rails (arranged in the front-rear direction) for the drawer tray 72 to slide are also arranged side by side left and right on the support slide table; the two rear horizontal slide rails are located adjacent to the rear of the two front horizontal slide rails of the corresponding layer and are flush with the front horizontal slide rails.

[0034] Among them, in the embodiment of the present utility model, an even number of placement units are arranged side by side in the front and rear directions on the tray 11. Each column of placement units includes a plurality of placement slots arranged side by side in the left and right directions. All the placement slots are arranged in a rectangular array. The placement slots are arranged in the front and rear directions and cooperate with the screen 9. Every two columns of placement units form a group, and the FPC cables 10 of the screens 9 on them are arranged oppositely (and staggered left and right). Counting from the front to the back, the FPC cables 10 of the screens 9 in the placement slots of the first column and the third column of placement units are located at the rear side, and the FPC cables 10 of the screens 9 in the placement slots of the second column and the fourth column of placement units are located at the front side.

[0035] Among them, the discharging manipulator 5 in the embodiment of the present utility model includes a first X-axis component arranged in the left and right direction, a first Y-axis component arranged in the front and rear direction and located on the front side of the first X-axis component, a first Z-axis component vertically arranged on the first Y-axis component, two first lifting mechanisms arranged side by side in the front and rear direction on the first Z-axis component, a first rotating mechanism on the first lifting mechanism, and a first screen suction cup vertically arranged on the first rotating mechanism, etc. Among them, the first X-axis component is located at the right rear of the four-station turntable 2. The first Y-axis component can move left and right on the first X-axis component (driven by a corresponding servo motor). The first Z-axis component can move back and forth on the first Y-axis component (driven by a corresponding servo motor) and is located directly above the pulling structure 73 of the discharging bin 8 (can move to the discharging station). The first lifting mechanism can move vertically (driven by a corresponding air cylinder). The first rotating mechanism can rotate 90° (can rotate 180°, 270° as needed, can rotate clockwise or counterclockwise, specifically driven by a servo motor, which is a conventional structure). When discharging, the two first screen suction cups are located directly above the two screens 9 at the discharging station, and the distance between them should ensure that the screen 9 can rotate.

[0036] Among them, the feeding manipulator 3 in the embodiment of the present utility model includes a second Y-axis assembly arranged in the front-back direction, a second X-axis assembly arranged in the left-right direction and located on the right side of the second Y-axis assembly, a second Z-axis assembly arranged vertically on the second X-axis assembly, two second lifting mechanisms arranged side by side in the front-back direction at the lower part of the second Z-axis assembly, a second rotating mechanism on the second lifting mechanism, and a second screen suction cup arranged vertically on the second rotating mechanism, etc. Among them, the second Y-axis assembly is located on the left side of the four-station turntable 2 and the feeding bin 7. The second X-axis assembly can move in the front-back direction on the second Y-axis assembly (driven by a corresponding servo motor), and the second Z-axis assembly can move in the left-right direction on the second Y-axis assembly (driven by a corresponding servo motor) and is located directly above the pulling structure 73 of the feeding bin 7 (able to move backward to the feeding station). The second lifting mechanism can move vertically (driven by a corresponding air cylinder), and the second rotating mechanism can rotate 90° (can rotate 180°, 270° as needed, can rotate clockwise or counterclockwise, specifically driven by a servo motor, which is a conventional structure). During feeding, the two second screen suction cups are respectively located directly above two adjacent columns of corresponding placement slots (arranged side by side in the front-back direction and in opposite directions) on the tray 11, and the distance between them should ensure that the screen 9 can rotate.

[0037] Embodiment 2

[0038] See Figures 1-4 , Embodiment 2 provides an automatic detection device for a display panel, whose structure is basically the same as that of Embodiment 1. The difference is that the multi-layer lifting frame in this embodiment includes eight-layer drawer trays 72, and the tray 11 is provided with four columns of placement units, and each column of placement units includes eight placement slots arranged side by side in the left-right direction.

[0039] Among them, the "first", "second", "third" and "fourth" in the present utility model are only for distinction and have no other special meaning.

[0040] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An automatic detection device for a display panel, comprising a chassis (1) and a four-station turntable (2) therein, a code scanning structure, a feeding robot (3), a discharging robot (5), a screen lighting structure (4) and a visual detection structure, wherein the four-station turntable (2) is provided with four stations in sequence along the rotation direction, and the four stations are a feeding station, a code scanning station, a detection station and a discharging station in sequence, the feeding station is located at the front of the four-station turntable (2), the discharging station is located at the right of the four-station turntable (2), each station is provided with a screen fixing fixture (6), the code scanning structure is located at the code scanning station, the screen lighting structure (4) and the visual detection structure are both located at the detection station, the feeding robot (3) and the discharging robot (5) can both move leftward, forward and backward and vertically; characterized in that, The automatic detection device also includes a feed bin (7) and two discharge bins (8) at the front of the chassis (1), and each station is provided with two screen fixing jigs (6); at the feed station, the two screen fixing jigs (6) are arranged side by side and symmetrically in the center, and the FPC cables (10) of the two screens (9) are arranged side by side and in opposite directions; the feed bin (7) is located right in front of the four-station turntable (2), and the feed manipulator (3) is located between the feed bin (7) and the four-station turntable (2) and includes side by side or side by side. Two screen suction cups are arranged side by side, and two discharge bins (8) are arranged side by side on the left and right and are located in front of the four-station turntable (2); the discharge robot (5) is located on the right side of the discharge station, and is located directly behind the discharge bin (8), and includes two screen suction cups arranged side by side front and back or side by side left and right; the screen suction cup can move vertically and can rotate; the screen lighting structure (4) is located behind the four-station turntable (2), and can move to the top between the two screen fixing fixtures (6), and can light up two screens (9) at the same time.

2. The automatic detection device for display panel according to claim 1, characterized in that: The visual detection structure comprises a bracket and a camera (91) and a light source (92) thereon; the light source (92) is located directly above the detection station, and the camera (91) is located directly above the light source (92).

3. The automatic detection device for display panel according to claim 1, characterized in that: The screen fixing fixture (6) comprises a rectangular groove (61) and two pneumatic clamping structures (62) on two sides thereof; at each workstation, a support platform (63) for supporting an FPC cable (10) is provided between the two rectangular grooves (61); the screen (9) is located at a corner of the rectangular groove (61) close to the support platform (63); at the feeding workstation, the rectangular groove (61) is arranged in the left-right direction, and the support platform (63) is arranged in the front-back direction and is located at the midpoint of the line connecting the two rectangular grooves (61); one pneumatic clamping structure (62) is located at the front side or the rear side of the screen (9), and the other pneumatic clamping structure (62) is located at the left side or the right side of the screen (9) and is arranged away from the support platform (63).

4. The automatic detection device for display panel according to claim 3, characterized in that: The screen lighting structure (4) includes a three-axis manipulator, an FPC cable connector on the three-axis manipulator, and a positioning pin arranged vertically at the bottom of the FPC cable connector, wherein the three-axis manipulator is located behind the four-station turntable (2); the FPC cable connector is arranged in the front-to-back direction, and can move to the top of a support platform (63) on the detection station, on which two groups of probes are arranged side by side in the front and back; the two groups of probes respectively cooperate with two FPC cables (10) and can move to the top of the two FPC cables (10); a positioning hole cooperating with the positioning pin is provided on the support platform (63); during detection, the probe is pressed against the corresponding FPC cable (10), and the positioning pin is inserted in the positioning hole.

5. The automatic detection device for display panel according to claim 3, characterized in that: The feeding bin (7) and the discharging bin (8) both comprise a bin body (71), a multi-layer lifting frame in the bin body (71), a multi-layer drawer tray (72) arranged side by side on the multi-layer lifting frame, a pull-out structure (73) at the rear of the multi-layer lifting frame, and a clamping structure (74) at the rear end of the pull-out structure (73) and capable of clamping the drawer tray (72); the bin body (71) is open on both the front and rear sides; an openable door is provided on the front side of the cabinet (1) and located at the bin body (71); the multi-layer lifting frame can move up and down in a step-by-step manner to allow each layer to be opened. The drawer trays (72) can all be aligned with the clamping structure (74), the pull-out structure (73) is located at the rear side of the lower part of the bin body (71), the drawer tray (72) can be pulled forward and backward from the multi-layer lifting frame and a tray tray (11) is placed thereon, and the pull-out structure (73) can move forward and backward; during detection, the feed bin (7) only pulls out one layer of the drawer tray (72) corresponding to the clamping structure (74), and the two discharge bins (8) only pull out one layer of the drawer tray (72) corresponding to the clamping structure (74).

6. The automatic detection device for display panel according to claim 5, characterized in that: The pull-out structure (73) includes a supporting slide arranged along the front-rear direction and a translation mechanism on the supporting slide and capable of moving in the front-rear direction, and the drawer tray (72) can slide in the front-rear direction on the supporting slide; the clamping structure (74) is arranged on the translation mechanism and can move vertically, and is located directly above the rear end of the drawer tray (72) of the corresponding layer; the upper rear end of the drawer tray (72) is provided with a groove that cooperates with the clamping structure (74); when the drawer tray (72) is pulled, the drawer tray (72) slides on the supporting slide, and the clamping structure (74) presses downward in the groove.

7. The automatic detection device for display panel according to claim 5, characterized in that: The tray (11) is provided with an even number of placement units arranged side by side in front and back, each placement unit column includes a plurality of placement slots arranged side by side in left and right directions, all placement slots are arranged in a rectangular array, the placement slots are arranged in the front-to-back direction and cooperate with the screen (9), every two placement units columns form a group and the FPC cables (10) of the screen (9) thereon are arranged relatively.

8. The automatic detection device for display panel according to claim 5, characterized in that: The discharging robot (5) comprises a first X-axis assembly arranged in the left-right direction, a first Y-axis assembly arranged in the front-back direction and located in front of the first X-axis assembly, a first Z-axis assembly arranged vertically on the first Y-axis assembly, two first lifting mechanisms arranged side by side in front and back on the first Z-axis assembly, a first rotating mechanism on the first lifting mechanism, and a first screen suction cup arranged vertically on the first rotating mechanism, wherein the first X-axis assembly is located at the right rear of the four-station turntable (2), the first Y-axis assembly can move left-right on the first X-axis assembly, the first Z-axis assembly can move forward and backward on the first Y-axis assembly and is located directly above the pull-out structure (73) of the discharging bin (8), the first lifting mechanism can move vertically, and the first rotating mechanism can rotate 90°; when discharging, the two first screen suction cups are located directly above the two screens (9) on the discharging station.

9. The automatic detection device for display panel according to claim 6, characterized in that: The feeding robot (3) includes a second Y-axis component arranged in the front-to-back direction, a second X-axis component arranged in the left-to-right direction and located on the right side of the second Y-axis component, a second Z-axis component arranged vertically on the second X-axis component, two second lifting mechanisms arranged side by side in the front-to-back direction at the bottom of the second Z-axis component, a second rotating mechanism on the second lifting mechanism, and a second screen suction cup arranged vertically on the second rotating mechanism, the second Y-axis component is located on the left side of the four-station turntable (2) and the feeding bin (7), the second X-axis component can move forward and backward on the second Y-axis component, the second Z-axis component can move left and right on the second Y-axis component and is located directly above the pull-out structure (73) of the feeding bin (7); the second lifting mechanism can move vertically, and the second rotating mechanism can rotate 90°; when feeding, the two second screen suction cups are respectively located directly above two placement slots corresponding to adjacent columns on the tray (11).

10. The automatic detection device for display panel according to claim 1, characterized in that: The two discharge bins (8) are respectively a qualified bin and an unqualified bin. The qualified bin is arranged close to the four-station turntable (2), and the unqualified bin is arranged far from the four-station turntable (2).

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