Backlight plate surface foreign matter inspection equipment

Abstract

The utility model relates to the technical field of backlight plate detection, and particularly discloses backlight plate surface foreign matter detection equipment which comprises a machine table, a stepping feeding mechanism, a foreign matter detection mechanism and a sorting and discharging mechanism. The stepping feeding mechanism comprises a lifting platform which is arranged on the machine table in the first direction and used for bearing the backlight plates and a stepping carrying assembly which is arranged below the lifting platform and used for carrying the backlight plates on the lifting platform step by step in the first direction. The foreign matter detection mechanism comprises a frame erected on the machine table corresponding to the lifting platform, a lamp tube assembly arranged in the frame and used for emitting light, and a camera assembly arranged above the frame, extending downwards and used for detecting whether foreign matter exists on the surface of the backlight plate or not. According to the foreign matter inspection equipment, the backlight plates can be carried to the position below the foreign matter detection mechanism one by one, under cooperation of the camera assembly and the lamp tube assembly, whether foreign matter exists on the backlight plates or not can be rapidly detected, and compared with the prior art, the detection precision is improved, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] This application relates to the field of backlight panel inspection technology, and specifically discloses a backlight panel surface foreign object inspection device. Background Technology

[0002] In the backlight module industry, foreign objects have become a major pain point affecting the yield rate of products. The presence of foreign objects reduces the assembly defect rate on the production line, increases processing costs and rework rates. Therefore, it is necessary to detect foreign objects as much as possible. In the current technology, the method for inspecting foreign objects on the surface of the backlight panel is mostly to manually inspect the backlight panel with the naked eye by illuminating it with a lamp. This method has relatively low work efficiency, increases the labor intensity of operators, and has poor accuracy, which may result in some foreign objects being missed, thus failing to meet the production needs of enterprises.

[0003] To address the aforementioned issues, this application discloses a device for inspecting foreign objects on the surface of a backlight panel.

[0004] Application content

[0005] To overcome the shortcomings of the prior art, this application discloses a backlight panel surface foreign object inspection device.

[0006] To achieve the above objectives, the technical solution adopted in this application is: a backlight panel surface foreign object inspection device, including a machine base, a stepping feeding mechanism, a foreign object detection mechanism, and a sorting and unloading mechanism;

[0007] The stepping feeding mechanism includes a lifting platform mounted on the machine base along a first direction for supporting the backlight panel, and a stepping conveying component located below the lifting platform for gradually moving the backlight panel on the lifting platform along the first direction.

[0008] The foreign object detection mechanism includes a frame mounted on the machine platform corresponding to the lifting platform, a lamp tube assembly for emitting light inside the frame, and a camera assembly located above the frame and extending downward for detecting whether there are foreign objects on the surface of the backlight panel.

[0009] The sorting and unloading mechanism includes a qualified product unloading robot arm located on both sides of the machine platform for recycling qualified products and an unqualified product unloading robot arm located on both sides for recycling unqualified products.

[0010] More preferably, the stepping conveying assembly includes two linear guide rails located below the lifting platform on both sides of the machine in the first direction, two sliding seats slidably mounted on the two linear guide rails, a telescopic drive cylinder located below the lifting platform and connected to one of the sliding seats, two first lifting drive cylinders located above the two sliding seats, U-shaped seats connected to the two first lifting drive cylinders, two lifting rods located on both sides of the lifting platform in the second direction and connected to the two U-shaped seats, and a plurality of lifting blocks located on the two lifting rods and corresponding to each other.

[0011] More preferably, the lamp assembly includes four LED lamps located at the bottom of the frame.

[0012] A further preferred embodiment is that the camera assembly is fixed to a support plate above the frame, a detection camera is disposed below the support plate, and a lens is disposed at the bottom of the detection camera.

[0013] More preferably, the qualified product unloading robot and the unqualified product unloading robot each include a frame, a servo geared motor located at the bottom of the frame, a robot arm connected to the output shaft of the servo geared motor above the gantry, a second lifting drive cylinder located above the robot arm, a lifting plate connected to the second lifting drive cylinder below the robot arm, and a plurality of pneumatic suction cups located below the lifting plate.

[0014] A further preferred embodiment includes a qualified product recycling line and a non-qualified product recycling line located on the machine platform on one side of the qualified product unloading robot and the non-qualified product unloading robot.

[0015] This application achieves the following beneficial effects:

[0016] The foreign object inspection equipment provided in this application can transport backlight panels one by one to the bottom of the foreign object detection mechanism. With the cooperation of the camera assembly and the lamp assembly, it can quickly detect whether there are foreign objects on the backlight panels. In addition, the sorting and unloading mechanism can also sort and recycle the backlight panels after inspection. Compared with the existing technology, it improves the detection accuracy, reduces the labor intensity of operators, and meets the production needs of enterprises.

[0017] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures shown in the description and the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the disclosure of this application and, together with the specification, serve to explain the principles of this disclosure.

[0019] Figure 1 This is a schematic diagram of the overall structure disclosed in this application;

[0020] Figure 2 This is a schematic diagram of the stepper feeding mechanism disclosed in this application;

[0021] Figure 3 This is a schematic diagram of the foreign object detection mechanism disclosed in this application;

[0022] Figure 4This is a schematic diagram of the sorting and feeding mechanism disclosed in this application;

[0023] In the diagram: 10. Machine base; 20. Stepping feeding mechanism; 21. Stepping conveying assembly; 211. Linear guide rail; 212. Sliding seat; 213. Telescopic drive cylinder; 214. First lifting drive cylinder; 215. U-shaped seat; 216. Lifting rod; 217. Lifting block; 22. Lifting platform; 30. Foreign object detection mechanism; 31. Frame; 32. Lamp assembly; 321. LED lamp; 33. Camera assembly; 331. Support plate; 332. Detection camera; 333. Lens; 40. Sorting and unloading mechanism; 41. Qualified product unloading robot; 411. Stand; 412. Servo geared motor; 413. Robotic arm; 414. Second lifting drive cylinder; 415. Lifting plate; 416. Pneumatic suction cup; 42. Unqualified product unloading robot; 50. Qualified product recycling line; 60. Unqualified product recycling line. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0025] In the description of this application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the component or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Example

[0026] To address the shortcomings of existing technologies that rely on visual inspection of the backlight panel for foreign object detection, reference Figures 1-3 As shown, this application discloses a backlight panel surface foreign object inspection device, including a machine base 10, a stepping feeding mechanism 20, a foreign object detection mechanism 30, and a sorting and unloading mechanism 40;

[0027] The stepping feeding mechanism 20 includes a lifting platform 22 mounted on the machine base 10 along a first direction for supporting the backlight panel, and a stepping conveying component 21 located below the lifting platform 22 for gradually moving the backlight panel on the lifting platform 22 along the first direction. A loading station is set on one side of the supporting platform, where operators or robots place the backlight panels to be tested one by one on the lifting platform 22. Under the action of the stepping conveying component 21, the backlight panels on the lifting platform 22 will move forward step by step.

[0028] The foreign object detection mechanism 30 includes a frame 31 mounted on the machine 10 corresponding to the lifting platform 22, a lamp tube assembly 32 for emitting light inside the frame 31, and a camera assembly 33 located above the frame 31 and extending downward to detect whether there are foreign objects on the surface of the backlight panel. When the backlight panel is moved to below the frame 31, the light emitted by the lamp tube assembly 32 will illuminate the backlight panel. When the camera assembly 33 takes a picture, foreign objects on the backlight panel can be detected.

[0029] The sorting and unloading mechanism 40 includes a qualified product unloading robot 41 and an unqualified product unloading robot 42 located on both sides of the machine base 10 for recycling qualified products and unqualified products respectively. According to the detection results of the camera detection component, when the backlight panel is transported to the end of the lifting platform 22, the qualified product unloading robot 41 and the unqualified product unloading robot 42 respectively recycle the backlight panel.

[0030] refer to Figure 2 As shown, the stepping conveying assembly 21 of this application includes two linear guide rails 211 located below the lifting platform 22 on both sides of the machine base 10 in a first direction; two sliding seats 212 slidably mounted on the two linear guide rails 211; a telescopic drive cylinder 213 located below the lifting platform 22 and connected to one of the sliding seats 212; two first lifting drive cylinders 214 located above the two sliding seats 212; U-shaped seats 215 connected to the two first lifting drive cylinders 214; and two lifting rods 216 connected to the two U-shaped seats 215 on both sides of the lifting platform 22 in a second direction. Several lifting blocks 217 are respectively set on two lifting rods 216 and correspond to each other. When the backlight panels on the lifting platform 22 are moved, the two first lifting drive cylinders 214 drive the two U-shaped seats 215 to rise. At this time, the lifting blocks 217 on the two lifting rods 216 will cooperate to lift all the backlight panels on the lifting platform 22. When the telescopic drive cylinder 213 drives the corresponding U-shaped seats 215 to move, all the backlight panels move backward a set distance. When the two first lifting drive cylinders 214 drive the two U-shaped seats 215 to descend, all the backlight panels are back on the lifting platform 22.

[0031] refer to Figure 3 As shown, the lamp tube assembly 32 of this application includes four LED lamp tubes 321 disposed at the bottom of the frame 31. When the four LED lamp tubes 321 emit light, the light will shine on the backlight panel located at the bottom of the frame 31.

[0032] Based on the previous embodiment, the camera assembly 33 of this application is fixed to the support plate 331 above the frame 31, the detection camera 332 is disposed below the support plate 331, and the lens 333 is disposed at the bottom of the detection camera 332. When detecting the backlight panel, the detection camera 332 will cooperate with the lens 333 to take a picture of the backlight panel. With the cooperation of an external computer system, foreign object detection of the backlight panel can be realized.

[0033] refer to Figure 4 As shown, the qualified product unloading robot and the unqualified product unloading robot of this application respectively include a frame 411, a servo geared motor 412 located at the bottom of the frame 411, a robot arm 413 connected to the output shaft of the servo geared motor 412 above the gantry, a second lifting drive cylinder 414 located above the robot arm 413, a lifting plate 415 connected to the second lifting drive cylinder 414 below the robot arm 413, and a plurality of pneumatic suction cups 416 located below the lifting plate 415; in addition to the above structure, this application also includes a qualified product recycling line 50 and an unqualified product recycling line 60 located on the machine base 10 on one side of the qualified product unloading robot 41 and the unqualified product unloading robot 42.

[0034] First, it should be noted that only one of the qualified product unloading robot and the unqualified product unloading robot in this application can perform the same action to recycle the backlight panel at any given time, and the working principle of the two is the same. Here, we will use the action principle of the qualified product unloading robot as an example. When the qualified backlight panel is detected to be at the end of the lifting platform 22, the servo reduction motor 412 drives the robot arm 413 to the top of the tail of the lifting platform 22. Then, the second lifting drive cylinder 414 drives the lifting plate 415 to descend. After it is in position, several pneumatic suction cups 416 will pick up the backlight panel. When the servo reduction motor 412 drives the robot arm 413 to rotate 180° and is located on the qualified product recycling line 50, the pneumatic suction cups 416 will stop picking up the backlight panel, and the backlight panel will be placed on the qualified product recycling line 50.

[0035] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be used to limit the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit and essence of this application should be included within the scope of protection of this application.

Claims

1. A device for inspecting foreign objects on the surface of a backlight panel, characterized in that, This includes the machine base, the stepping feeding mechanism, the foreign object detection mechanism, and the sorting and unloading mechanism; The stepping feeding mechanism includes a lifting platform mounted on the machine base along a first direction for supporting the backlight panel, and a stepping conveying component located below the lifting platform for gradually moving the backlight panel on the lifting platform along the first direction. The foreign object detection mechanism includes a frame mounted on the machine platform corresponding to the lifting platform, a lamp tube assembly for emitting light inside the frame, and a camera assembly located above the frame and extending downward for detecting whether there are foreign objects on the surface of the backlight panel. The sorting and unloading mechanism includes a qualified product unloading robot arm located on both sides of the machine platform for recycling qualified products and an unqualified product unloading robot arm located on both sides for recycling unqualified products.

2. The backlight panel surface foreign object inspection device according to claim 1, characterized in that, The stepping conveying assembly includes two linear guide rails located below the lifting platform on both sides of the machine in the first direction, two sliding seats slidably mounted on the two linear guide rails, a telescopic drive cylinder located below the lifting platform and connected to one of the sliding seats, two first lifting drive cylinders located above the two sliding seats, U-shaped seats connected to the two first lifting drive cylinders, two lifting rods located on both sides of the lifting platform in the second direction and connected to the two U-shaped seats, and a plurality of lifting blocks located on the two lifting rods and corresponding to each other.

3. The backlight panel surface foreign object inspection device according to claim 1, characterized in that, The lamp assembly includes four LED lamps located at the bottom of the frame.

4. The backlight panel surface foreign object inspection device according to claim 1, characterized in that, The camera assembly is fixed to a support plate above the frame, a detection camera located below the support plate, and a lens located at the bottom of the detection camera.

5. The backlight panel surface foreign object inspection device according to claim 1, characterized in that, The qualified product unloading robot and the unqualified product unloading robot each include a frame, a servo geared motor located at the bottom of the frame, a robot arm connected to the output shaft of the servo geared motor above the gantry, a second lifting drive cylinder located above the robot arm, a lifting plate connected to the second lifting drive cylinder below the robot arm, and several pneumatic suction cups located below the lifting plate.

6. The backlight panel surface foreign object inspection device according to claim 1, characterized in that, It also includes qualified product recycling lines and unqualified product recycling lines located on the machine platform on one side of the qualified product unloading robot and the unqualified product unloading robot.

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