Detection device and detection method of display panel

Abstract

The invention discloses a display panel detection device and a detection method.The display panel detection device comprises a carrying mechanism and a lamp box module, the carrying mechanism comprises a grabbing assembly, a rotating assembly and a first displacement assembly which are connected with a controller, the grabbing assembly is installed on the first displacement assembly, and the rotating assembly is installed on the first displacement assembly; the first displacement assembly is mounted on the rotating assembly; the carrying mechanism is used for transplanting a to-be-detected display panel, the lamp box module is used for placing the to-be-detected display panel and detecting the to-be-detected display panel, and the displacement direction of the first displacement assembly is perpendicular to a detection platform of the lamp box module. The display panel detection device provided by the invention can improve the feeding and discharging efficiency of the display panel during lamp box module detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of display panel detection, and in particular relates to a detection device and a detection method for a display panel. Background Art

[0002] In the process of product handling, most of them are carried out by flat loading and laying. Especially for display panels such as LCD panels that need to be manually inspected, the light box needs to be flipped to a suitable angle before inspection. At present, the method of flat loading and laying is used for logistics handling. After the LCD panel is transported to the light box, the light box is flipped to the inspection angle for personnel inspection. This method is relatively simple in structure, but it increases the inspection time of the inspection station and limits the TT of the entire line. If the light box is fixed at an angle that is convenient for inspection, higher requirements will be placed on the handling. The LCD panel needs to be accurately placed on the tilted light box. At this time, a very precise and complex mechanical manipulator is required for handling, which will greatly increase the cost. Summary of the invention

[0003] In view of all or part of the deficiencies of the prior art described above, the object of the present invention is to provide a detection device and a detection method for a display panel, wherein the detection device for the display panel can accurately place the product on the detection platform of the light box module, or accurately take the product out from the detection platform, and has a simple structure and a fast handling speed; the detection device for the display panel provided by the present invention can improve the feeding and unloading efficiency of the display panel during the detection of the light box module.

[0004] In order to achieve the above-mentioned invention object, the present invention provides the following technical solutions:

[0005] The present invention provides a detection device for a display panel, comprising a conveying mechanism and a light box module, wherein the conveying mechanism comprises: a grabbing assembly connected to a controller, a rotating assembly and a first displacement assembly, wherein the grabbing assembly is mounted on the first displacement assembly, and the first displacement assembly is mounted on the rotating assembly; the conveying mechanism is used to transfer a display panel to be tested, and the light box module is used to place the display panel to be tested and perform detection, and the displacement direction of the first displacement assembly is perpendicular to the detection platform of the light box module. The present invention can rotate the angle of the display panel to be tested to make it parallel to the detection platform by setting a rotating assembly, and can directly place the display panel on the detection platform or remove it from the detection platform by setting a first displacement assembly. The present invention also comprises a controller, which can be a PLC. The grabbing assembly, the rotating assembly and the first displacement assembly are all connected to the controller, and the controller can control the rotating assembly and the first displacement assembly to act simultaneously, and complete the angle adjustment of the display panel (using a mechanical arm to flip) and the placement or removal of the display panel on the detection platform in a short time, and the structure is simple and the conveying speed is fast, and the feeding and discharging efficiency of the display panel during the detection of the light box module can be improved.

[0006] The grasping assembly includes a mounting member, a frame and a plurality of first vacuum suction cups, wherein the mounting member is mounted on the first displacement assembly, the frame is mounted on the mounting member, and the first vacuum suction cup is mounted on the frame; and further includes a guide rail and a plurality of second vacuum suction cups, wherein the second vacuum suction cup is located outside the first vacuum suction cup, the second vacuum suction cup is mounted on the guide rail, and the guide rail is mounted on the frame.

[0007] The first displacement assembly includes a first driving assembly, a first linkage assembly, a first screw rod, a first supporting assembly, and a first linear slide rail, and a first sliding seat installed on the first linear slide rail, which are connected in sequence. The grabbing assembly is fixedly installed on the first sliding seat.

[0008] The transport mechanism also includes a second displacement component, the rotating component is installed on the second displacement component, and the displacement direction of the second displacement component is perpendicular to the product incoming platform and is not parallel to the displacement direction of the first displacement component. If the displacement stroke design of the first displacement component can satisfy the grabbing component to grab the display panel to be tested on the incoming platform, the second displacement component is not necessary; and when the displacement stroke design of the first displacement component is not convenient for the grabbing component to grab the display panel to be tested on the incoming platform, the second displacement component with a displacement direction perpendicular to the incoming platform of the display panel to be tested can facilitate accurate grabbing of the grabbing component.

[0009] The second displacement assembly includes a second driving assembly, a second linkage assembly, a second screw rod, a second supporting assembly, and a second linear slide rail, and a second sliding seat installed on the second linear slide rail, which are connected in sequence. The rotating assembly is fixedly installed on the second sliding seat.

[0010] The rotating assembly includes a rotating drive assembly, a reducer, and a rotating shaft connected in sequence, and also includes a connecting piece fixedly connected to the second displacement assembly, the connecting piece is provided with a through hole for mounting the rotating shaft, and the rotating shaft is fixedly connected to the first displacement assembly; there are two connecting pieces, one of which is used for fixing the reducer; and the other connecting piece is used for fixing the end of the rotating shaft away from the reducer, and a sensor is also provided at this end.

[0011] The rotating assembly also includes a connecting plate fixedly connected to the first displacement assembly. A side plane is formed on the rotating shaft. The side plane is provided with a plurality of mounting holes for fixed connection with the connecting plate.

[0012] It also includes a third displacement component, which is a linear motor module, and the second displacement component is installed on the third displacement component; the displacement direction of the third displacement component is perpendicular to the displacement direction of the second displacement component.

[0013] There are at least two conveying mechanisms and at least two light box modules. At least two conveying mechanisms are arranged on the third displacement assembly, and at least two light box modules are arranged in sequence along the displacement direction of the third displacement assembly.

[0014] The light box module comprises a double-station tilting light box and a rotating platform. The double-station tilting light box comprises a first light box and a second light box which are tilted. The first light box and the second light box are relatively arranged on the rotating platform.

[0015] The present invention also provides a display panel detection method, which uses the display panel detection device to detect the display panel, comprising the following steps:

[0016] S1. Grab the display panel to be tested and place it at the location of the detection platform of the light box module using a grabbing component;

[0017] S2, adjusting the angle of the display panel to be tested until it is parallel to the detection platform by a rotating component, and moving the display panel to be tested and placing it on the detection platform by a first displacement component;

[0018] S3. Testing the display panel to be tested on the testing platform.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The present invention can rotate the angle of the display panel to be tested so that it is parallel to the detection platform by setting a rotating component, and can directly place the display panel on the detection platform or remove it from the detection platform by setting a first displacement component. It also includes a controller, which can be a PLC. The grabbing component, the rotating component and the first displacement component are all connected to the controller, and the controller can control the rotating component and the first displacement component to act simultaneously, so as to complete the angle adjustment of the display panel and the placement or removal of the display panel on the detection platform in a short time. It has a simple structure and a fast handling speed, and can improve the feeding and discharging efficiency of the display panel during the detection of the light box module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a partial side view of the transport mechanism in Example 1;

[0023] Figure 2 is a partial schematic diagram of the transport mechanism in Example 1 from a first angle;

[0024] Figure 3 is a partial schematic diagram of the transport mechanism in Embodiment 1 from a second angle;

[0025] Figure 4 yes Figure 2 A magnified image of area A;

[0026] Figure 5 yes Figure 3 Enlarged view of area B;

[0027] Figure 6 is a schematic diagram of the first displacement assembly and the rotation axis in Example 1;

[0028] Figure 7 is a schematic diagram of the rotating assembly in Example 1;

[0029] Figure 8 It is an overall schematic diagram of the detection device for the display panel in Example 1.

[0030] Figure markings: 1-grabbing assembly; 10-mounting piece; 11-frame; 12-first vacuum suction cup; 13-guide rail; 14-second vacuum suction cup; 15-extension plate; 16-mounting plate; 17-quick pressing piece; 18-sliding block; 19-locking piece; 2-rotation assembly; 21-rotation drive assembly; 22-reducer; 23-rotation shaft; 24-connecting piece; 25-connecting plate; 26-mounting hole; 27-sensor; 3-first displacement assembly; 31-first drive assembly; 32-first linkage assembly; 33-first screw rod; 34-first support assembly; 35-first linear slide rail; 36-first sliding seat; 4-second displacement assembly; 41-second drive assembly; 42-second linkage assembly; 43-second screw rod; 44-second support assembly; 45-second linear slide rail; 46-second sliding seat; 5-third displacement assembly; 61-rotating platform; 62-first light box; 63-second light box. DETAILED DESCRIPTION

[0031] The technical solutions in the specific embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0032] It should be noted that, in order to describe the technical solution more specifically, the steps described in the following embodiments do not strictly correspond to the steps described in the invention summary. In the following embodiments, the detection of a liquid crystal panel is used as an example to introduce the detection device and detection method of a display panel provided by the present invention.

[0033] Example 1

[0034] The present invention provides a display panel detection device, comprising two transport mechanisms and two light box modules, wherein the transport mechanisms are used for transplanting display panels to be tested, and the light box modules are used for placing the display panels to be tested and performing detection.

[0035] The transport mechanism, referring to Figure 1 , including: a grabbing component 1, a rotating component 2 and a first displacement component 3 connected to a controller, the grabbing component 1 is mounted on the first displacement component 3, the first displacement component 3 is mounted on the rotating component 2, and the displacement direction of the first displacement component 3 is perpendicular to the detection platform of the light box module. The controller is a PLC, and the grabbing component 1, the rotating component 2 and the first displacement component 3 are all connected to the controller. The controller can control the rotating component 2 and the first displacement component 3 to move simultaneously, and complete the angle adjustment of the display panel and the placement or removal of the display panel on the detection platform in a short time.

[0036] Reference Figures 2 to 5 The gripping assembly 1 includes a mounting member 10, a frame 11 and a plurality of first vacuum suction cups 12. The mounting member 10 is mounted on the first displacement assembly 3, the frame 11 is mounted on the mounting member 10, and the first vacuum suction cup 12 is mounted on the frame 11; it also includes a guide rail 13 and a plurality of second vacuum suction cups 14. The second vacuum suction cup 14 is located outside the first vacuum suction cup 12, the second vacuum suction cup 14 is mounted on the guide rail 13, and the guide rail 13 is mounted on the frame 11. It also includes an extension plate 15, a mounting plate 16 and a quick press 17. The second vacuum suction cup 14 is mounted on one side of the extension plate 15, the mounting plate 16 is connected to the other side of the extension plate 15 through the quick press 17, the mounting plate 16 is mounted on the guide rail 13 through a sliding block 18, and the second vacuum suction cup 14 is locked at a specific position on the guide rail 13 through a locking member 19. In this embodiment, the first vacuum suction cup 12 is used to grip the liquid crystal panel, and the second vacuum suction cup 14 is used to grip the circuit board. In other embodiments, if it is necessary to transport and inspect display panels in other processes, the gripping component 1 may also be provided with only one set of vacuum suction cups according to actual needs.

[0037] Reference Figure 6 The first displacement assembly 3 includes a first driving assembly 31, a first linkage assembly 32, a first screw rod 33, a first support assembly 34, and a first linear slide rail 35, and a first sliding seat 36 installed on the first linear slide rail 35, and the mounting member 10 of the grabbing assembly 1 is fixedly installed on the first sliding seat 36. The first driving assembly 31 is a first driving motor, the first linkage assembly 32 is a first coupling, and the first support assembly 34 is a first support seat.

[0038] Reference Figures 1 to 3 The transport mechanism also includes a second displacement assembly 4, on which the rotation assembly 2 is mounted. The displacement direction of the second displacement assembly 4 is perpendicular to the product incoming platform and is not parallel to the displacement direction of the first displacement assembly 3 (the displacement direction of the first displacement assembly 3 depends on the inclination angle of the detection platform of the light box module). The second displacement assembly 4 includes a second drive assembly 41, a second linkage assembly 42, a second screw rod 43, a second support assembly 44, and a second linear slide rail 45, a second sliding seat 46 mounted on the second linear slide rail 45, which are connected in sequence. The rotation assembly 2 is fixedly mounted on the second sliding seat 46. The second drive assembly 41 is a second drive motor, the second linkage assembly 42 is a second coupling, and the second support assembly 44 is a second support seat.

[0039] Combined with reference Figure 7The rotating assembly 2 includes a rotating drive assembly 21, a reducer 22, and a rotating shaft 23 connected in sequence, and also includes a connecting member 24 fixedly connected to the second displacement assembly 4, and a through hole for installing the rotating shaft 23 is provided on the connecting member 24, and the rotating shaft 23 is fixedly connected to the first displacement assembly 3. The rotating assembly 2 provided by the present invention has a simple structure and is easy to operate. The rotating assembly 2 also includes a connecting plate 25 fixedly connected to the first displacement assembly 3, and a side plane is formed on the rotating shaft 23, and a plurality of mounting holes 26 are provided on the side plane for fixed connection with the connecting plate 25. There are two connecting members 24, one of which is used for fixedly installing the reducer 22; the other connecting member 24 is used for fixedly installing the end of the rotating shaft 23 away from the reducer 22, and the end is also provided with a sensor 27, and the sensor 27 is connected to the controller for monitoring the rotation angle. The rotating drive assembly 21 is a rotating drive motor.

[0040] Reference Figure 8 , also includes a third displacement assembly 5, the third displacement assembly 5 is a linear motor module, the second displacement assembly 4 is installed on the third displacement assembly 5; the displacement direction of the third displacement assembly 5 is perpendicular to the displacement direction of the second displacement assembly 4. In this embodiment, the displacement direction of the second displacement assembly 4 is the Z1 axis, the displacement direction of the first displacement assembly 3 is the Z2 axis, and the displacement direction of the third displacement assembly 5 is the X axis. In this embodiment, the two conveying mechanisms are arranged on the third displacement assembly 5, and the two light box modules are arranged in sequence along the displacement direction of the third displacement assembly 5. The two conveying mechanisms share one third displacement assembly 5. The light box module includes a double-station tilting light box and a rotating platform 61, the double-station tilting light box includes a first light box 62 and a second light box 63 that are tilted, and the first light box 62 and the second light box 63 are relatively arranged on the rotating platform 61.

[0041] Example 2

[0042] The present invention further provides a method for detecting a display panel, which uses the display panel detection device described in Embodiment 1 to detect the display panel, comprising the following steps:

[0043] S1. The upstream is a platform-type incoming material. The third displacement assembly 5 drives the second displacement assembly 4 on the first conveying mechanism (loading conveying mechanism) to move to the top of the incoming material platform and wait. After the display panel to be tested reaches the specified position, the second displacement assembly 4 descends, and the first vacuum suction cup 12 and the second vacuum suction cup 14 on the grasping assembly 1 absorb vacuum, and the incoming material platform breaks the vacuum, and the display panel to be tested is separated from the incoming material platform. The third displacement assembly 5 drives the second displacement assembly 4 on the first conveying mechanism to move to the position of the detection platform of the first light box 62 in the first light box module, and the first light box 62 of the first light box module without the display panel to be tested waits here.

[0044] S2, the first displacement assembly 3, the second displacement assembly 4 and the rotation assembly 2 on the first conveying mechanism (loading conveying mechanism) are controlled by PLC to move simultaneously, and the product is placed on the detection platform of the first light box 62 of the first light box module. Specifically, the angle of the display panel to be tested is adjusted by the rotation assembly 2 until it is parallel to the detection platform, and the display panel to be tested is moved and placed on the detection platform by the first displacement assembly 3.

[0045] S3, the first light box module rotates through the rotating platform 61, rotates the first light box 62 of the first light box module to the back, lights up the light box backlight to perform manual inspection on the liquid crystal panel. At this time, the second light box 63 of the first light box module rotates to the side facing the conveying mechanism, and the first conveying mechanism (loading conveying mechanism) repeats steps S1 and S2 to obtain the second display panel to be tested, and places the second display panel to be tested on the inspection platform of the second light box 63 of the first light box module.

[0046] S4. After the first display panel is inspected, the first light box 62 of the first light box module is rotated back to the loading position through the rotating platform 61. The grabbing component 1 of the second conveying mechanism (unloading conveying mechanism) is on standby here. At this time, the first display panel that has been inspected is removed from the inspection platform of the first light box 62 by the second conveying mechanism to complete unloading and put it on the downstream unloading platform. The first displacement component 3, the second displacement component 4 and the rotating component 2 of the second conveying mechanism are controlled by PLC to act simultaneously, and the inspected product is sucked from the light box, and the product is moved away from the light box module by the first displacement component 3. Specifically, the display panel after inspection is moved and leaves the inspection platform by the first displacement component 3, the angle of the display panel is adjusted by the rotating component 2 until it is parallel to the unloading platform, and the third displacement component 5 is moved to the unloading position, and the first displacement component 3 and the second displacement component 4 are used to place the product on the downstream unloading platform. At this time, the second display panel on the inspection platform of the second light box 63 of the first light box module is undergoing manual inspection.

[0047] S5. When the first display panel is tested in step S3, the first conveying mechanism (loading conveying mechanism) can be used to repeat steps S1 and S2 to obtain the third display panel to be tested, and the third display panel to be tested is placed on the detection platform of the first light box 62 of the second light box module. This step can also be performed when the second display panel is tested in step S4, and the specific order can be adjusted according to actual conditions. The present invention can make full use of the detection of one display panel while loading or unloading another display panel by setting two or more light box modules and a double-station tilting light box. The reasonable design of the conveying mechanism improves the feeding and unloading efficiency of the display panel during the detection of the light box module, and can also reduce the detection time of the detection station.

[0048] When inspecting products, the transport arm, i.e., the transport mechanism, can simultaneously satisfy the unloading and loading actions. When the personnel inspection is completed, the unloading and loading are completed. The double-station inspection light box only needs to perform a rotation action, and the personnel can continue to inspect the product, which greatly improves the inspection efficiency of personnel. The transport arm, i.e., the transport mechanism, can satisfy the loading and unloading structure for horizontal loading and unloading or tilted loading and unloading, and has better compatibility with different working conditions. By adding the Z2 axis and the rotating axis 23 (R axis), the product is placed on a fixed-angle inspection platform, reducing the time of the inspection station to achieve an increase in TT and improve efficiency. The display panel inspection device provided by the present invention has a compact layout, can effectively improve the customer's production efficiency, improve product production yield, reduce labor, and reduce costs.

[0049] The above embodiments are only used to help understand the core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A detection device for a display panel, characterized in that: The invention comprises a transport mechanism and a light box module, wherein the transport mechanism comprises: a grabbing component (1) connected to a controller, a rotating component (2) and a first displacement component (3), wherein the grabbing component (1) is mounted on the first displacement component (3), and the first displacement component (3) is mounted on the rotating component (2); the transport mechanism is used for transporting a display panel to be tested, and the light box module is used for placing the display panel to be tested and performing testing, wherein the displacement direction of the first displacement component (3) is perpendicular to a testing platform of the light box module.

2. A display panel detection device according to claim 1, characterized in that: The gripping assembly (1) comprises a mounting member (10), a frame (11) and a plurality of first vacuum suction cups (12), wherein the mounting member (10) is mounted on the first displacement assembly (3), the frame (11) is mounted on the mounting member (10), and the first vacuum suction cup (12) is mounted on the frame (11); and further comprises a guide rail (13) and a plurality of second vacuum suction cups (14), wherein the second vacuum suction cups (14) are located outside the first vacuum suction cups (12), the second vacuum suction cups (14) are mounted on the guide rail (13), and the guide rail (13) is mounted on the frame (11).

3. The display panel detection device according to claim 1, characterized in that: The first displacement assembly (3) comprises a first driving assembly (31), a first linkage assembly (32), a first screw rod (33), a first supporting assembly (34), and a first linear slide rail (35), and a first sliding seat (36) mounted on the first linear slide rail (35), which are connected in sequence. The grabbing assembly (1) is fixedly mounted on the first sliding seat (36).

4. The display panel detection device according to claim 1, characterized in that: The transport mechanism further comprises a second displacement assembly (4), the rotation assembly (2) is mounted on the second displacement assembly (4), the displacement direction of the second displacement assembly (4) is perpendicular to the product incoming platform and is not parallel to the displacement direction of the first displacement assembly (3); the second displacement assembly (4) comprises a second drive assembly (41), a second linkage assembly (42), a second screw rod (43), a second support assembly (44), and a second linear slide rail (45) connected in sequence, and a second sliding seat (46) mounted on the second linear slide rail (45), and the rotation assembly (2) is fixedly mounted on the second sliding seat (46).

5. The display panel detection device according to claim 4, characterized in that: The rotating assembly (2) comprises a rotating drive assembly (21), a reducer (22), and a rotating shaft (23) which are connected in sequence, and also comprises a connecting member (24) fixedly connected to the second displacement assembly (4), wherein the connecting member (24) is provided with a through hole for mounting the rotating shaft (23), and the rotating shaft (23) is fixedly connected to the first displacement assembly (3); there are two connecting members (24), wherein one connecting member (24) is used for fixedly mounting the reducer (22); and the other connecting member (24) is used for fixedly mounting an end of the rotating shaft (23) away from the reducer (22), and a sensor (27) is also provided at the end.

6. The display panel detection device according to claim 5, characterized in that: The rotating assembly (2) further comprises a connecting plate (25) fixedly connected to the first displacement assembly (3); a side plane is formed on the rotating shaft (23); and a plurality of mounting holes (26) are provided on the side plane for fixedly connecting to the connecting plate (25).

7. The display panel detection device according to claim 4, characterized in that: It also includes a third displacement component (5), which is a linear motor module, and the second displacement component (4) is installed on the third displacement component (5); the displacement direction of the third displacement component (5) is perpendicular to the displacement direction of the second displacement component (4).

8. The display panel detection device according to claim 7, characterized in that: There are at least two conveying mechanisms and at least two light box modules. At least two conveying mechanisms are arranged on the third displacement assembly (5), and at least two light box modules are arranged in sequence along the displacement direction of the third displacement assembly (5).

9. The display panel detection device according to claim 1, characterized in that: The light box module comprises a double-station tilting light box and a rotating platform (61), wherein the double-station tilting light box comprises a first light box (62) and a second light box (63) which are arranged tilted, and the first light box (62) and the second light box (63) are arranged relatively on the rotating platform (61).

10. A method for detecting a display panel, characterized in that: Using a display panel detection device according to any one of claims 1 to 9 to detect a display panel comprises the following steps: S1. Using the grabbing component (1), grab the display panel to be tested to the location of the detection platform of the light box module; S2, adjusting the angle of the display panel to be tested by means of a rotating component (2) until the display panel is parallel to the testing platform, and moving the display panel to be tested by means of a first displacement component (3) and placing the display panel on the testing platform; S3. Testing the display panel to be tested on the testing platform.

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