Automatic testing mechanism for liquid crystal display module

Abstract

The utility model discloses an automatic testing mechanism for a liquid crystal display module, which comprises a feeding device, a testing device and a distributing device, and is characterized in that the feeding device comprises a feeding manipulator; the testing device comprises a plurality of testing workbenches and a plurality of testing positioning jigs, the testing positioning jigs correspond to the testing workbenches respectively, the feeding mechanical arm is used for carrying the liquid crystal display modules to be tested to the testing workbenches respectively, and when the liquid crystal display modules are located on the testing workbenches, the testing positioning jigs are located on the testing workbenches. A test connecting end on the liquid crystal display module is positioned on the test positioning jig, and the test positioning jig is used for positioning and testing the test connecting end on the liquid crystal display module; the material distributing device comprises a good product discharging mechanical arm, and the good product discharging mechanical arm is used for conducting discharging operation on the liquid crystal display modules which are tested to be qualified. Therefore, a plurality of liquid crystal display modules can be tested at the same time, so that the testing efficiency is improved, meanwhile, manual interference is reduced, and the testing accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display module production and manufacturing, in particular to an automatic testing mechanism for a liquid crystal display module. Background Art

[0002] With the advancement of science and technology and the advent of the digital age, liquid crystal display technology has become an indispensable part of modern electronic products. As the core component of liquid crystal display technology, the quality and performance of liquid crystal display modules are crucial to the entire liquid crystal device. Therefore, accurate testing and inspection of liquid crystal display modules is an important part of ensuring their quality and reliability. However, the touch test of liquid crystal display modules currently usually adopts single-post manual testing, which has slow test efficiency and is affected by human factors. The test accuracy is insufficient and cannot be applied to large-scale production. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an automatic testing mechanism for a liquid crystal display module which can improve the testing efficiency.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A liquid crystal display module automatic testing mechanism, comprising: a feeding device, a testing device and a material dividing device, the feeding device comprising a feeding robot; the feeding device is located on one end of the testing device, the testing device comprises a plurality of testing workbenches and a plurality of testing positioning fixtures, each of the testing positioning fixtures corresponds to each of the testing workbenches, the feeding robot is used to carry the liquid crystal display modules to be tested to each of the testing workbenches, when the liquid crystal display module is located on the testing workbench, the test connection end on the liquid crystal display module is located on the test positioning fixture, the test positioning fixture is used to position and test the test connection end on the liquid crystal display module; the material dividing device comprises a good product unloading robot, the good product unloading robot is located at the other end of the testing device, and the good product unloading robot is used to unload the liquid crystal display modules that have passed the test.

[0006] In one of the embodiments, the feeding device further includes a feeding conveyor belt, the feeding conveyor belt is located on one side of the testing device, and the grabbing end of the feeding robot is located above the feeding conveyor belt.

[0007] In one embodiment, the loading robot includes a linear motor module, a mounting frame and a suction plate, one end of the mounting frame is connected to the linear motor module, and the suction plate is arranged on the other end of the mounting frame. The linear motor module is used to drive the mounting frame to reciprocate between the loading conveyor belt and the testing device, and the suction plate is used to adsorb and fix the liquid crystal display module.

[0008] In one embodiment, the test positioning fixture includes a lower positioning plate and an upper positioning plate, one side of the lower positioning plate is hinged to one side of the upper positioning plate, the lower positioning plate is connected to the test main board, and a test connection area is provided on the lower positioning plate, the test connection end on the liquid crystal display module is located on the test connection area, and when the lower positioning plate is buckled and connected with the upper positioning plate, the upper positioning plate is used to press and position the test connection end on the liquid crystal display module.

[0009] In one of the embodiments, a lower positioning groove is provided on the lower positioning plate, and the test connection end on the liquid crystal display module is located in the lower positioning groove. The lower positioning groove is used to position the test connection end on the liquid crystal display module, and the test connection area is located in the lower positioning groove.

[0010] In one of the embodiments, a pressing block is provided on a side of the upper positioning plate facing the lower positioning plate, and when the upper positioning plate is buckled with the lower positioning plate, a side surface of the pressing block abuts against a test connection terminal on the liquid crystal display module.

[0011] In one of the embodiments, a CCD camera module is further included. The CCD camera module is located between the feeding conveyor belt and the testing device. The CCD camera module is used to photograph and detect the position of the liquid crystal display module on the feeding robot.

[0012] In one of the embodiments, the material dividing device further includes a good product conveyor belt, wherein the good product conveyor belt is located at one end of the testing device, and the good product conveyor belt is used to transfer the liquid crystal display module to the next workstation.

[0013] In one embodiment, the material dividing device also includes a defective product conveyor belt and a defective product unloading robot, the defective product conveyor belt is located on one side of the testing device, and the defective product unloading robot is located on one side of the defective product conveyor belt. When a defective liquid crystal display module is placed on the defective product conveyor belt, the defective product unloading robot is used to unload the defective liquid crystal display module on the defective product conveyor belt.

[0014] In one of the embodiments, the material dividing device further includes a defective product storage tray, the defective product storage tray is located on one side of the defective product conveyor belt, and the defective product storage tray is used to store defective liquid crystal display modules.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The liquid crystal display module automatic testing mechanism of the utility model is provided with a feeding device, a testing device and a dividing device, so that the liquid crystal display module can be automatically loaded by the feeding robot in the feeding device, and the automatic testing operation of the liquid crystal display module can be realized by the testing device, and the automatic unloading operation of the good liquid crystal display module can be realized by the good unloading robot in the dividing device. At the same time, there are multiple test workbenches and test positioning fixtures on the testing device, so multiple liquid crystal display modules can be tested at the same time, thereby improving the test efficiency and reducing manual interference, thereby improving the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0018] Figure 1 It is a structural schematic diagram of an automatic testing mechanism for a liquid crystal display module in one embodiment of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of a feeding device and a testing device of an automatic testing mechanism for a liquid crystal display module;

[0020] Figure 3 for Figure 1 A structural diagram of a test workbench and a test positioning fixture of an automatic test mechanism for a liquid crystal display module;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the defective product conveyor belt, defective product unloading robot and defective product storage tray of the automatic testing mechanism of the LCD display module. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0023] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, an automatic testing mechanism 10 for liquid crystal display modules includes: a loading device 100, a testing device 200 and a material dividing device 300, wherein the loading device 100 includes a loading robot 110; the loading device 100 is located at one end of the testing device 200, and the testing device 200 includes a plurality of testing workbenches 210 and a plurality of testing positioning fixtures 220, each of which corresponds to each testing workbench 210, and the loading robot 110 is used to carry the liquid crystal display modules 20 to be tested to each of the testing workbenches 210, respectively. On the test workbench, when the liquid crystal display module 20 is located on the test workbench 210, the test connection end on the liquid crystal display module 20 is located on the test positioning fixture 220, and the test positioning fixture 220 is used to position and test the test connection end on the liquid crystal display module 20; the material dividing device 300 includes a good product unloading robot 310, and the good product unloading robot 310 is located at the other end of the test device 200, and the good product unloading robot 310 is used to unload the liquid crystal display module 20 that has passed the test.

[0024] It should be noted that the liquid crystal display module 20 is first transported to each test workbench 210 by the loading manipulator 110, and the test connection end on the liquid crystal display module 20 is placed on the test positioning fixture 220. The test connection end on the liquid crystal display module is positioned by the test positioning fixture 220 to ensure the accuracy of the test position, thereby ensuring the accuracy of the test result; further, if the liquid crystal display module after the test is a good product, the good product unloading manipulator 310 performs the unloading operation. In this way, the automatic loading operation, automatic testing operation and automatic unloading operation of the liquid crystal display module can be realized, thereby improving the test efficiency of the liquid crystal display module, and at the same time, reducing manual interference, thereby further improving the accuracy of the test result; in addition, there are multiple test workbenches and test positioning fixtures 220, so multiple liquid crystal display modules can be tested at the same time, thereby further improving the test efficiency.

[0025] Furthermore, the feeding device 100 further includes a feeding conveyor belt 120, which is located at one side of the testing device 200, and the gripping end of the feeding manipulator 110 is located above the feeding conveyor belt 120. In this way, the liquid crystal display modules to be tested can be continuously provided by the feeding conveyor belt 120, thereby improving the testing efficiency. In this embodiment, the feeding conveyor belt 120 can be a belt conveyor.

[0026] In one embodiment, the loading robot 110 includes a linear motor module 111, a mounting frame 112 and a suction plate 113. One end of the mounting frame 112 is connected to the linear motor module 111, and the suction plate 113 is arranged on the other end of the mounting frame 112. The linear motor module 111 is used to drive the mounting frame 112 to reciprocate between the loading conveyor belt 120 and the testing device 200, and the suction plate 113 is used to adsorb and fix the liquid crystal display module 20.

[0027] It should be noted that, fixing the liquid crystal display module 20 by adsorption on the adsorption plate 113 can reduce the possibility of damage to the liquid crystal display module 20 compared to fixing by clamping, thereby ensuring the quality of the liquid crystal display module.

[0028] In one embodiment, the test positioning fixture 220 includes a lower positioning plate 221 and an upper positioning plate 222, one side of the lower positioning plate 221 is hinged to one side of the upper positioning plate 222, the lower positioning plate 221 is connected to the test main board 400, and a test connection area is provided on the lower positioning plate 221, the test connection end on the liquid crystal display module is located on the test connection area, and when the lower positioning plate 221 is snap-fitted with the upper positioning plate 222, the upper positioning plate 222 is used to press and position the test connection end on the liquid crystal display module 20. In this way, the lower positioning plate 221 can ensure that the test connection end on the LCD display module is located on the test connection area, and the upper positioning plate 222 can press and position the test connection end on the LCD display module, so that the LCD display module can be connected to the test main board 400. In this embodiment, the test main board is a touch-controlled burning test main board. After the LCD display module is connected to the test main board 400, automatic detection can be started. The test main board sends an OK / NG signal through the host computer software and the industrial control computer 500. The industrial control computer receives instructions to control the good product unloading robot to unload the good product LCD display module.

[0029] Furthermore, a lower positioning groove is provided on the lower positioning plate 221, and the test connection end on the liquid crystal display module 20 is located in the lower positioning groove. The lower positioning groove is used to perform positioning operation on the test connection end on the liquid crystal display module, and the test connection area is located in the lower positioning groove. A test connector is installed in the test connection area, and the test connection end on the liquid crystal display module is a connector. Through the lower positioning groove, the liquid crystal display module can be prevented from being offset during the test process.

[0030] Furthermore, a pressing block 222a is provided on one side of the upper positioning plate 222 facing the lower positioning plate 221. When the upper positioning plate 222 and the lower positioning plate 221 are buckled, one side of the pressing block 222a abuts against the test connection end on the liquid crystal display module 20. When the unloading manipulator places the liquid crystal display module 20 on the test workbench 210, the test connection end on the liquid crystal display module is only placed on the test connector on the lower positioning plate 221. Therefore, by providing the pressing block 222a on the upper positioning plate 222, the test connection end on the liquid crystal display module is pressed down by the pressing block 222a and connected with the test connector on the lower positioning plate 221.

[0031] In one embodiment, the liquid crystal display module automatic testing mechanism 10 further includes a CCD camera module 600 , which is located between the loading conveyor belt 120 and the testing device 200 , and is used to photograph and detect the position of the liquid crystal display module 20 on the loading robot 110 .

[0032] It should be noted that when the loading robot 110 moves the LCD display module 20 to the test workbench 220, the test connection terminal on the LCD display module 20 is photographed and positioned by the CCD camera module 600 to ensure the position accuracy of the test connection terminal on the LCD display module 20, thereby ensuring that the test connection terminal of the LCD display module 20 can be accurately placed on the test connection area.

[0033] In one embodiment, the material distribution device 300 further includes a good product conveyor belt 320, which is located at one end of the testing device 200 and is used to transfer the liquid crystal display module 20 to the next station. That is, the good product unloading manipulator 310 transports the good product liquid crystal display module to the good product conveyor belt 320, and transfers it to the next station through the good product conveyor belt 320, thereby realizing automatic unloading. In this embodiment, the good product conveyor belt 320 is a belt conveyor. In this embodiment, the structure of the good product unloading manipulator is the same as that of the loading manipulator.

[0034] Furthermore, the material dividing device 300 also includes a defective product conveyor belt 330 and a defective product unloading robot 340. The defective product conveyor belt 330 is located on one side of the testing device 200, and the defective product unloading robot 340 is located on one side of the defective product conveyor belt 330. When a defective liquid crystal display module is placed on the defective product conveyor belt 330, the defective product unloading robot 340 is used to unload the defective liquid crystal display module on the defective product conveyor belt 330.

[0035] It should be noted that the defective liquid crystal display module placed on the defective product conveyor belt 330 can be transported from the test workbench by a good product unloading robot, or an additional transport robot can be set up for transportation. When the defective product conveyor belt 330 transfers the defective liquid crystal display module to the defective product unloading robot 340, the defective liquid crystal display module is unloaded by the defective product unloading robot 340. In this embodiment, the material distribution device 300 also includes a defective product storage tray 350, which is located on one side of the defective product conveyor belt, and the defective product storage tray is used to store defective liquid crystal display modules. For example, the defective product unloading robot 340 includes a linear motor module, a sliding frame and a suction plate. The sliding frame is connected to the linear motor module. The suction plate can be raised and lowered on the sliding frame. After the suction plate adsorbs the liquid crystal display module, the sliding frame is driven to move by the linear motor module. In addition, the suction plate also has a rotating structure so that the defective liquid crystal display module can be flipped over and inserted into the accommodating cavity of the defective product storage tray 350.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A liquid crystal display module automatic testing mechanism, characterized in that: include: A feeding device, the feeding device comprising a feeding manipulator; A test device, wherein the loading device is located at one end of the test device, the test device comprises a plurality of test workbenches and a plurality of test positioning fixtures, each of the test positioning fixtures corresponds to each of the test workbenches, the loading manipulator is used to carry the liquid crystal display modules to be tested to each of the test workbenches, when the liquid crystal display module is located on the test workbench, the test connection end on the liquid crystal display module is located on the test positioning fixture, and the test positioning fixture is used to position and test the test connection end on the liquid crystal display module; and The material dividing device includes a good product unloading robot, the good product unloading robot is located at the other end of the testing device, and the good product unloading robot is used to unload the liquid crystal display modules that have passed the test.

2. The automatic testing mechanism for liquid crystal display modules according to claim 1, characterized in that: The feeding device also includes a feeding conveyor belt, which is located on one side of the testing device, and the grabbing end of the feeding robot is located above the feeding conveyor belt.

3. The automatic testing mechanism for liquid crystal display modules according to claim 2, characterized in that: The loading robot includes a linear motor module, a mounting frame and an adsorption plate, one end of the mounting frame is connected to the linear motor module, and the adsorption plate is arranged on the other end of the mounting frame. The linear motor module is used to drive the mounting frame to perform reciprocating displacement between the loading conveyor belt and the testing device, and the adsorption plate is used to adsorb and fix the liquid crystal display module.

4. The automatic testing mechanism for liquid crystal display modules according to claim 1, characterized in that: The test positioning fixture includes a lower positioning plate and an upper positioning plate, one side of the lower positioning plate is hinged to one side of the upper positioning plate, the lower positioning plate is connected to the test main board, and a test connection area is provided on the lower positioning plate, the test connection end on the liquid crystal display module is located on the test connection area, and when the lower positioning plate is buckled and connected with the upper positioning plate, the upper positioning plate is used to press and position the test connection end on the liquid crystal display module.

5. The automatic testing mechanism for liquid crystal display modules according to claim 4, characterized in that: The lower positioning plate is provided with a lower positioning groove, the test connection end on the liquid crystal display module is located in the lower positioning groove, the lower positioning groove is used to position the test connection end on the liquid crystal display module, and the test connection area is located in the lower positioning groove.

6. The automatic testing mechanism for liquid crystal display modules according to claim 4 or 5, characterized in that: A pressing block is arranged on one side of the upper positioning plate facing the lower positioning plate. When the upper positioning plate is buckled with the lower positioning plate, one side of the pressing block abuts against the test connection end on the liquid crystal display module.

7. The automatic testing mechanism for liquid crystal display modules according to claim 2, characterized in that: It also includes a CCD camera module, which is located between the feeding conveyor belt and the testing device, and is used to photograph and detect the position of the liquid crystal display module on the feeding robot.

8. The automatic testing mechanism for liquid crystal display modules according to claim 1, characterized in that: The material dividing device further comprises a good product conveyor belt, wherein the good product conveyor belt is located at one end of the testing device and is used for transferring the liquid crystal display module to the next workstation.

9. The automatic testing mechanism for liquid crystal display modules according to claim 8, characterized in that: The material dividing device also includes a defective product conveyor belt and a defective product unloading robot. The defective product conveyor belt is located on one side of the testing device, and the defective product unloading robot is located on one side of the defective product conveyor belt. When a defective liquid crystal display module is placed on the defective product conveyor belt, the defective product unloading robot is used to unload the defective liquid crystal display module on the defective product conveyor belt.

10. The automatic testing mechanism for liquid crystal display modules according to claim 9, characterized in that: The material distribution device also includes a defective product storage tray, which is located on one side of the defective product conveyor belt and is used to store defective liquid crystal display modules.

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