Backlight module aoi detection device for display screen assembly equipment

Abstract

The utility model discloses a backlight unit AOI detection device for display screen equipment, including rack carrier and in the rack carrier along first direction setting in proper order beauty pattern glue tear -off unit, AOI detection unit, beauty pattern glue attachment unit and blanking unit, still including connecting in the rack carrier and along the first direction cross -spanning erecting between beauty pattern glue tear -off unit, AOI detection unit, beauty pattern glue attachment unit and blanking unit's transfer manipulator unit unit. The backlight unit AOI detection device of the present application, in the process of AOI detection, from tearing off beauty pattern glue release FPC circuit board, to the FPC circuit board is inserted to detection equipment, again to the reattachment beauty pattern glue fixed FPC circuit board after detection is completed, and finally after AOI detection is completed, the backlight unit is sent into the next process, all realize automation and carry out, improve production efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of liquid crystal display manufacturing equipment, specifically relating to an AOI inspection device for backlight modules in display assembly equipment. Background Technology

[0002] In the production process of LCD screens, display assembly equipment is used to bond and assemble backlight modules and display modules together. During the bonding and assembly process, AOI (Automated Optical Inspection) equipment is used to perform a lighting test on the backlight modules sent from the previous process. Only backlight modules that pass the test are then sent to the assembly equipment for bonding and assembly with the display modules. Typically, the backlight module is connected to an FPC (Flexible Printed Circuit) board. To prevent damage to the FPC board during the transport of the backlight module, masking tape is used to fold and attach the FPC board to the back of the backlight module for fixation in both the pre-lighting and post-lighting testing processes. Therefore, in existing technology, the process of testing the backlight module using AOI equipment includes removing the masking tape to release the FPC board, inserting the FPC board into the testing equipment, and reapplying the masking tape to fix the FPC board after testing. In existing technology, whether removing the masking tape, inserting the wires, or reapplying the masking tape, all are done manually, resulting in low testing efficiency. Utility Model Content

[0003] In view of this, the present invention provides an AOI inspection device for backlight modules in display assembly equipment, so as to solve the problem of how to improve the AOI inspection efficiency of backlight modules in the bonding and assembly process of liquid crystal displays.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An AOI inspection device for backlight modules in a display assembly equipment includes a frame platform and a masking tape removal unit, an AOI inspection unit, a masking tape application unit, and a unloading unit arranged sequentially on the frame platform along a first direction. It also includes a transfer robot unit connected to the frame platform and spanning along the first direction between the masking tape removal unit, the AOI inspection unit, the masking tape application unit, and the unloading unit. The masking tape removal unit is configured to remove the masking tape used to attach and fix the FPC circuit board on the backlight module; the AOI inspection unit is configured to wire the FPC circuit board on the backlight module and perform AOI inspection on the backlight module; the masking tape application unit is configured to apply masking tape to fix the FPC circuit board on the backlight module; the unloading unit is configured to send the inspected backlight module to the outside of the backlight module AOI inspection device; and the transfer robot unit is configured to sequentially transfer the backlight module from the masking tape removal unit to the AOI inspection unit, the masking tape application unit, and the unloading unit.

[0005] In a preferred embodiment, the masking tape removal unit includes a first transfer platform assembly and a masking tape removal assembly. The first transfer platform assembly extends along a second direction on the frame platform, and the masking tape removal assembly is disposed on the second end side of the first transfer platform assembly. The first transfer platform assembly receives the backlight module loading at its first end and moves it toward the second end. The masking tape removal assembly removes the masking tape on the backlight module at the second end of the first transfer platform assembly to release the FPC circuit board. The AOI detection unit includes a second transfer platform assembly, a test drive assembly, a connector robot arm, and an AOI detection assembly. The first transfer platform assembly extends along a second direction on the frame platform. The AOI detection assembly is positioned above the second end of the first transfer platform assembly. The test drive assembly is located on the side of the second transfer platform assembly and is movably connected to it. The connector robot arm is connected to the frame platform on the same side of the test drive assembly. The second transfer platform assembly receives the backlight module at its first end and moves it toward the second end. When it moves to the working position corresponding to the connector robot arm, the connector robot arm grips the FPC circuit board on the backlight module and inserts it into the test drive assembly, so that the test drive assembly can drive the backlight module to light up. The AOI detection assembly performs AOI detection on the lit backlight module at the second end of the second transfer platform assembly. The masking adhesive application unit includes a third transfer platform assembly and a masking adhesive application assembly. The third transfer platform assembly extends along a second direction on the frame platform, and the masking adhesive application assembly is disposed on the second end side of the third transfer platform assembly. The third transfer platform assembly receives the backlight module loading at its first end and moves it toward the second end. The masking adhesive application assembly applies masking adhesive to the second end of the third transfer platform assembly to fix the FPC circuit board onto the backlight module.

[0006] In a preferred embodiment, the first transfer platform assembly, the second transfer platform assembly, and the third transfer platform assembly each include a first linear drive module, a second linear drive module, and a support platform. The first linear drive module is connected to the frame platform and extends along the second direction. The second linear drive module is movably connected to the first linear drive module and extends along the first direction. The support platform is used to load the backlight module and is movably connected to the second linear drive module. Clamping and rotating mechanisms are also connected to opposite sides of the support platform in the second direction. The clamping and rotating mechanisms are used to clamp and fix the backlight module loaded on the support platform.

[0007] In a preferred embodiment, the masking tape removal assembly includes a liftable base, a tape-removing mechanism, and a first visual inspection mechanism. The liftable base is connected to the frame platform on the second end side of the first transfer platform assembly. The tape-removing mechanism and the first visual inspection mechanism are spaced apart from each other along the second direction and are respectively liftably connected to the liftable base. The tape-removing mechanism is configured to remove the masking tape, and the first visual inspection mechanism is used to detect and confirm whether the masking tape has been removed.

[0008] In a preferred embodiment, the masking mechanism includes a first rotary drive module, a second rotary drive module, a first lifting drive module, a third linear drive module, a suction nozzle, and grippers. The first rotary drive module is rotatably connected to the liftable base, the second rotary drive module is rotatably connected to the first rotary drive module, the first lifting drive module is rotatably connected to the second rotary drive module, the third linear drive module and the suction nozzle are rotatably connected to the first lifting drive module, and the grippers are located on the side of the suction nozzle and movably connected to the third linear drive module. The first rotary drive module is configured to drive the second rotary drive module to rotate in a horizontal plane, the second rotary drive module is configured to drive the first lifting drive module to rotate in a vertical plane, the first lifting drive module is configured to drive the third linear drive module and the suction nozzle to move vertically, the suction nozzle is configured to absorb masking tape, and the third linear drive module is configured to drive the grippers to move toward the suction nozzle to clamp the masking tape or move away from the suction nozzle to release the masking tape.

[0009] In a preferred embodiment, the test drive component is positioned below the loading platform of the second transfer stage assembly for loading the backlight module and can move synchronously with the loading platform. The test drive component includes a junction box with an upward-opening connector. When the test drive component and the backlight module loaded on the second transfer stage assembly move to the working position corresponding to the connector robot arm, the connector robot arm grips the FPC circuit board on the backlight module and inserts it into the connector, thereby electrically connecting the test drive component and the backlight module to drive the backlight module to light up. A second vision detection mechanism is connected to the connector robot arm, which feeds back the position information of the FPC circuit board on the backlight module and the connector to the connector robot arm.

[0010] In a preferred embodiment, the AOI inspection assembly includes an inspection dark chamber mounted above the second end of the second transfer stage assembly and multiple inspection cameras connected to the top surface inside the inspection dark chamber.

[0011] In a preferred embodiment, the masking adhesive application assembly includes a masking adhesive feeding mechanism, a laterally movable base, an adhesive application mechanism, and a third vision inspection mechanism. The masking adhesive feeding mechanism is a roller-type feeding, conveying, and receiving mechanism. The masking adhesive feeding mechanism and the third vision inspection mechanism are spaced apart from each other along the second direction and are respectively connected to the frame platform. The laterally movable base is connected to the frame platform on the side of the masking adhesive feeding mechanism opposite to the third transfer platform assembly. The adhesive application mechanism is movably connected to the laterally movable base and extends above the masking adhesive feeding mechanism. The adhesive application mechanism is configured to pick up masking adhesive from the masking adhesive feeding mechanism and apply the masking adhesive to the backlight module to fix the FPC circuit board. The third vision inspection mechanism is used to detect and confirm whether the masking adhesive has been applied to the predetermined position.

[0012] In a preferred embodiment, the adhesive application mechanism includes a second lifting drive module, a third rotary drive module, a third lifting drive module, a fourth linear drive module, an adsorption module, and a rolling module; the second lifting drive module is movably connected to the laterally movable base, the third rotary drive module is movably connected to the second lifting drive module, the third lifting drive module and the fourth linear drive module are rotatably connected to the third rotary drive module, the adsorption module is movably connected to the third lifting drive module, and the rolling module is movably connected to the fourth linear drive module. The second lifting drive module is configured to drive the third rotary drive module to move up and down. The third rotary drive module is configured to drive the third lifting drive module and the fourth linear drive module to rotate in a vertical plane. The third lifting drive module is configured to drive the adsorption module to move up and down. The fourth linear drive module is configured to drive the rolling module to move laterally. The adsorption module is used to pick up masking adhesive from the masking adhesive feeding mechanism and apply the masking adhesive to the backlight module. The rolling module is used to roll the masking adhesive applied to the backlight module to make it adhere firmly.

[0013] In a preferred embodiment, the transfer robot unit includes a three-moving linear drive module and three backlight module gripping robots. The three-moving linear drive module spans along the first direction between the masking tape removal unit, the AOI detection unit, the masking tape application unit, and the unloading unit. The three backlight module gripping robots are movably connected to the three-moving linear drive module. Specifically, the first backlight module gripping robot is used to grip and transfer the backlight module after masking tape removal from the masking tape removal unit to the AOI detection unit; the second backlight module gripping robot is used to grip and transfer the backlight module after AOI detection from the AOI detection unit to the masking tape application unit; and the third backlight module gripping robot is used to grip and transfer the backlight module after masking tape application from the masking tape application unit to the unloading unit.

[0014] The AOI inspection device provided in this embodiment integrates a masking tape removal unit, an AOI inspection unit, a masking tape application unit, and a material unloading unit into a single AOI inspection device. During the AOI inspection process, from removing the masking tape to release the FPC circuit board, to inserting the FPC circuit board into the inspection equipment, to reapplying masking tape to fix the FPC circuit board after inspection, and finally sending the AOI-inspected backlight module to the next process, all processes are automated, improving production efficiency. Furthermore, the rational layout of the functional units makes the connections between them more compact, resulting in a smaller device size and reduced floor space required on the production floor. Attached Figure Description

[0015] Figure 1 This is a planar layout diagram of the AOI detection device for the backlight module in an embodiment of this utility model; Figure 2 This is a perspective view of the AOI detection device for the backlight module in an embodiment of this utility model; Figure 3 This is a schematic diagram of the masking tape removal unit in an embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the first transfer platform assembly in this embodiment of the present invention; Figure 5 This is a schematic diagram of the masking tape removal component in an embodiment of this utility model; Figure 6 This is a schematic diagram of the adhesive-tearing mechanism in an embodiment of this utility model; Figure 7 and Figure 8 This is a schematic diagram of the AOI detection unit in an embodiment of the present invention; Figure 9 This is a schematic diagram of the junction box in an embodiment of the present utility model; Figure 10 This is a schematic diagram of the masking adhesive application unit in an embodiment of this utility model; Figure 11 This is a schematic diagram of the masking adhesive attachment component in an embodiment of this utility model; Figures 12 to 14 This is a structural schematic diagram of the components of the adhesive applicator in an embodiment of this utility model; Figure 15 This is a schematic diagram of the transfer robot unit in an embodiment of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of this utility model shown in and described with reference to the drawings are merely exemplary, and this utility model is not limited to these embodiments.

[0017] It should be noted that the same or similar reference numerals in the accompanying drawings of the embodiments of this utility model correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0018] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0019] This utility model embodiment provides an AOI inspection device for backlight modules in display assembly equipment, see reference. Figures 1 to 15 The backlight module AOI inspection device mainly includes a frame platform 100 and a masking tape removal unit 1, an AOI inspection unit 2, a masking tape application unit 3, a material unloading unit 4, and a transfer robot unit 5 connected to the frame platform 100. The masking tape removal unit 1, the AOI inspection unit 2, the masking tape application unit 3, and the material unloading unit 4 are sequentially arranged on the frame platform 100 along a first direction (the length direction of the frame platform 100 in this embodiment), and extend along a second direction (the width direction of the frame platform 100 in this embodiment). The transfer robot unit 5 is transversely mounted between the masking tape removal unit 1, the AOI inspection unit 2, the masking tape application unit 3, and the material unloading unit 4 along the first direction.

[0020] The masking tape removal unit 1 is configured to remove the masking tape used to attach and fix the FPC circuit board on the backlight module. The AOI inspection unit 2 is configured to wire the FPC circuit board on the backlight module and perform AOI inspection on the backlight module. The masking tape application unit 3 is configured to apply masking tape to fix the FPC circuit board on the backlight module. The unloading unit 4 is configured to deliver the inspected backlight module to the outside of the backlight module AOI inspection device. The transfer robot unit 5 is configured to sequentially transfer the backlight module from the masking tape removal unit 1 to the AOI inspection unit 2, the masking tape application unit 3, and the unloading unit 4.

[0021] The masking tape removal unit 1 mainly includes a first transfer platform assembly 11 and a masking tape removal assembly 12. The first transfer platform assembly 11 extends along the second direction on the frame platform 100, and the masking tape removal assembly 12 is disposed on the second end side of the first transfer platform assembly 11. The first transfer platform assembly 11 receives the backlight module loading at its first end and moves it towards the second end, while the masking tape removal assembly 12 removes the masking tape from the backlight module at the second end of the first transfer platform assembly 11 to release the FPC circuit board.

[0022] In this embodiment, as Figure 3 and Figure 4 As shown, the first transfer platform assembly 11 includes a first linear drive module 111, a second linear drive module 112, and a support platform 113. The first linear drive module 111 is connected to the frame platform 300 and extends along the second direction. The second linear drive module 112 is movably connected to the first linear drive module 111 and extends along the first direction. The support platform 113 is used to load the backlight module and is movably connected to the second linear drive module 112. Clamping and rotating mechanisms 114 are also connected to opposite sides of the support platform 113 in the second direction. The clamping and rotating mechanisms 114 are used to clamp and fix the backlight module loaded on the support platform 113.

[0023] When a backlight module needs to be received, the first linear drive module 111 drives the second linear drive module 112 to move the support platform 113 to the first end. The backlight module is loaded onto the support platform 113, and the clamping and rotating mechanism 114 rotates above the backlight module and then presses down to clamp the backlight module. During related operations (e.g., adhesive removal), the second linear drive module 112 drives the support platform 113 to move, adjusting the position of the backlight module in the first direction so that it can move to a suitable position before performing related operations, such as moving into the masking tape removal component 12 to perform adhesive removal. When the operation is completed and the backlight module needs to be removed by the transfer robot unit 5, firstly, the first linear drive module 111 drives the support platform 113 to the first end and below the transfer robot unit 5. Then, the clamping and rotating mechanism 114 rises to release the backlight module and rotates to the side of the backlight module. Then, the transfer robot unit 5 grabs the backlight module and transfers it to the next operation unit.

[0024] In this embodiment, as Figure 5 and Figure 6As shown, the masking tape removal assembly 12 includes a liftable base 12a, a tape-removing mechanism 12b, and a first visual inspection mechanism 12c. The liftable base 12a is connected to the frame platform 100 at the second end of the first transfer platform assembly 11. The tape-removing mechanism 12b and the first visual inspection mechanism 12c are spaced apart from each other along the second direction and are respectively liftably connected to the liftable base 12a. The liftable base 12a is configured to drive the tape-removing mechanism 12b and the first visual inspection mechanism 12c to move vertically and vertically as a whole. The tape-removing mechanism 12b is configured to remove the masking tape, and the first visual inspection mechanism 12c is used to detect and confirm whether the masking tape has been removed.

[0025] Specifically, in this embodiment, the adhesive-tearing mechanism 12b includes a first rotary drive module 121, a second rotary drive module 122, a first lifting drive module 123, a third linear drive module 124, a suction nozzle 125, and a gripper 126. The first rotary drive module 121 is rotatably connected to the liftable base 12a, the second rotary drive module 122 is rotatably connected to the first rotary drive module 121, the first lifting drive module 123 is rotatably connected to the second rotary drive module 122, the third linear drive module 124 and the suction nozzle 125 are rotatably connected to the first lifting drive module 123, and the gripper 126 is located on the side of the suction nozzle 125 and is movably connected to the third linear drive module 124. The first rotary drive module 121 is configured to drive the second rotary drive module 122 to rotate in a horizontal plane, the second rotary drive module 122 is configured to drive the first lifting drive module 123 to rotate in a vertical plane, the first lifting drive module 123 is configured to drive the third linear drive module 124 and the suction nozzle 125 to move up and down, the suction nozzle 125 is configured to absorb masking tape, and the third linear drive module 124 is configured to drive the gripper 126 to move toward the suction nozzle 125 to clamp the masking tape or move away from the suction nozzle 125 to release the masking tape.

[0026] During the masking tape removal process, the first transfer platform assembly 11 first sends the loaded backlight module into the masking tape removal assembly 12 and positions it above the masking tape removal mechanism 12b. The liftable base 12a drives the masking tape removal mechanism 12b to rise and approach the bottom surface of the backlight module. Next, the first lifting drive module 123 drives the suction nozzle 125 to rise, pressing and adsorbing one end of the masking tape. The first lifting drive module 123 then drives the suction nozzle 125 to descend, causing one end of the masking tape to be torn off. Further, the third linear drive module 124 drives the gripper 126 to move toward the suction nozzle 125 to clamp the torn-off end of the masking tape. Then, the first rotary drive module 121, in conjunction with the rotary drive of the second rotary drive module 122, completely removes the masking tape, completing the masking tape removal operation and releasing the FPC circuit board that was originally attached and fixed by the masking tape.

[0027] The AOI detection unit 2 mainly includes a second transfer platform assembly 21, a test drive assembly 22, a connector robot arm 23, and an AOI detection assembly 24. The first transfer platform assembly 21 extends along the second direction on the rack platform 100. The AOI detection assembly 24 is disposed above the second end of the first transfer platform assembly 21. The test drive assembly 22 is located on the side of the second transfer platform assembly 21 and is movably connected to the second transfer platform assembly 21. The connector robot arm 23 is connected to the rack platform 100 on the same side of the test drive assembly 22. The second transfer platform assembly 21 receives the backlight module at its first end and moves it toward the second end. When it moves to the working position corresponding to the plug-in robot arm 23, the plug-in robot arm 23 clamps the FPC circuit board on the backlight module and plugs it into the test drive assembly 22 so that the test drive assembly 22 can drive the backlight module to light up. The AOI detection assembly 24 performs AOI detection on the lit backlight module at the second end of the second transfer platform assembly 21.

[0028] The second transfer platform assembly 21 has the same structure as the first transfer platform assembly 11 in the masking tape removal unit 1, so it will not be described in detail again.

[0029] In this embodiment, as Figures 7 to 9As shown, the test drive component 22 is disposed below the loading platform (i.e., the carrier platform) for loading the backlight module of the second transfer platform component 21 and can move synchronously with the loading platform. The test drive component 22 includes a junction box 221, which has an upward-opening plug-in interface 222. When the test drive component 22 and the backlight module loaded on the second transfer platform component 21 move to the working position corresponding to the plug-in robot arm 23, the plug-in robot arm 23 clamps the FPC circuit board on the backlight module and plugs it into the plug-in interface 222, so that the test drive component 22 and the backlight module are electrically connected and can drive the backlight module to light up. The connector robot arm 23 is connected to a second vision detection mechanism 231. The second vision detection mechanism 231 is used to feed back the position information of the FPC circuit board on the backlight module and the connector 222 to the connector robot arm 23, so as to ensure that the connector robot arm 23 can accurately grasp the FPC circuit board and insert it into the connector 222.

[0030] It should be noted that after AOI inspection is completed, when the transfer robot arm unit 5 picks up the backlight module and transfers it to the next work unit, the FPC circuit board can be pulled out of the connector 222 based on the gripping force of the transfer robot arm unit 5, without the need for the connector robot arm 23 to pull the FPC circuit board out of the connector 222.

[0031] In this embodiment, as Figure 7 and Figure 8 As shown, the AOI detection assembly 24 includes a detection dark chamber 241 mounted above the second end of the second transfer stage assembly 21 and a plurality of detection cameras 242 connected to the top surface inside the detection dark chamber 241. The plurality of detection cameras 242 include at least one main camera with its main optical axis vertically facing the backlight module and two side cameras with their main optical axes tilted towards the backlight module.

[0032] The masking adhesive application unit 3 mainly includes a third transfer platform assembly 31 and a masking adhesive application assembly 32. The third transfer platform assembly 31 extends along the second direction on the frame platform 100, and the masking adhesive application assembly 32 is disposed on the second end side of the third transfer platform assembly 31. The third transfer platform assembly 31 receives the backlight module loading at its first end and transfers it towards the second end. The masking adhesive application assembly 32 applies masking adhesive to the second end of the third transfer platform assembly 31 to fix the FPC circuit board onto the backlight module.

[0033] The third transfer platform assembly 31 has the same structure as the first transfer platform assembly 11 in the masking tape removal unit 1, so it will not be described in detail again.

[0034] In this embodiment, as Figures 10 to 14 As shown, the masking tape application assembly 32 includes a masking tape feeding mechanism 32a, a laterally movable base 32b, an adhesive application mechanism 32c, and a third vision inspection mechanism 32d. The masking tape feeding mechanism 32a is a roller-type feeding, conveying, and receiving mechanism. The masking tape feeding mechanism 32a and the third vision inspection mechanism 32d are spaced apart from each other along the second direction and are respectively connected to the frame platform 100. The laterally movable base 32b is connected to the frame platform 100 on the side of the masking tape feeding mechanism 32a opposite to the third transfer platform assembly 31. The adhesive application mechanism 32c is movably connected to the laterally movable base 32b and extends above the masking tape feeding mechanism 32a. The laterally movable base 32b is configured to drive the adhesive applicator 32c to move along the second direction. The adhesive applicator 32c is configured to pick up masking adhesive from the masking adhesive feeding mechanism 32a and apply the masking adhesive to the backlight module to fix the FPC circuit board. The third visual inspection mechanism 32d is used to detect and confirm whether the masking adhesive has been applied to the predetermined position.

[0035] Specifically, the adhesive application mechanism 32c includes a second lifting drive module 321, a third rotary drive module 322, a third lifting drive module 323, a fourth linear drive module 324, an adsorption module 325, and a rolling module 326. The second lifting drive module 321 is movably connected to the laterally movable base 32b. The third rotary drive module 322 is vertically connected to the second lifting drive module 321. The third lifting drive module 323 and the fourth linear drive module 324 are rotatably connected to the third rotary drive module 322, the adsorption module 325 is vertically connected to the third lifting drive module 323, and the rolling module 326 is movably connected to the fourth linear drive module 324.

[0036] The second lifting drive module 321 is configured to drive the third rotary drive module 322 to move up and down. The third rotary drive module 322 is configured to drive the third lifting drive module 323 and the fourth linear drive module 324 to rotate in a vertical plane. The third lifting drive module 323 is configured to drive the adsorption module 325 to move up and down. The fourth linear drive module 324 is configured to drive the rolling module 326 to move laterally. The adsorption module 325 is used to pick up masking adhesive from the masking adhesive feeding mechanism 32a and attach the masking adhesive to the backlight module. The rolling module 326 is used to roll the masking adhesive attached to the backlight module to make it firmly attached.

[0037] During the masking tape application process, the third transfer platform assembly 31 first delivers the loaded backlight module into the masking tape application assembly 32, positioning it above the masking tape feeding mechanism 32a. Through the horizontal drive of the laterally movable base 32b and the vertical drive of the second lifting drive module 321, the adsorption module 325 and the rolling module 326 are positioned vertically between the feeding platform of the masking tape feeding mechanism 32a and the bottom surface of the backlight module. Next, the third rotation drive module 322 first drives the adsorption module 325 and the rolling module 326 to rotate towards the feeding platform of the masking tape feeding mechanism 32a (e.g., ...). Figure 12 (As shown in the diagram), the third lifting drive module 323 drives the adsorption module 325 to descend and pick up the masking tape from the loading table, and the third rotation drive module 322 then drives the adsorption module 325 and the rolling module 326 to rotate towards the bottom surface of the backlight module (as shown in the diagram). Figure 13 (As shown in the diagram). Further, the third lifting drive module 323 drives the adsorption module 325 to rise and press against the bottom surface of the backlight module, adhering the adsorbed masking adhesive to the bottom surface of the backlight module and attaching and fixing the FPC circuit board. The third lifting drive module 323 then drives the adsorption module 325 to descend, avoiding the movement path of the rolling module 326. Finally, the rolling module 326 presses against the masking adhesive that has been attached to the bottom surface of the backlight module, and the fourth linear drive module 324 drives the rolling module 326 to move and roll the masking adhesive, so that the masking adhesive is firmly attached to the bottom surface of the backlight module.

[0038] Specifically, in this embodiment, as Figure 1 and Figure 2 As shown, the unloading unit 4 includes a qualified product unloading component 41 and a non-qualified product unloading component 42. The qualified product unloading component 41 extends along the first direction on the frame platform 100, and the non-qualified product unloading component 42 extends along the second direction on the frame platform 100. When the backlight module's inspection result is qualified, the transfer robot unit 5 transfers the qualified backlight module to the qualified product unloading component 41, which then delivers the backlight module outside the AOI inspection device for the next process, such as a backlight module dispensing unit. When the backlight module's inspection result is non-qualified, the transfer robot unit 5 transfers the non-qualified backlight module to the non-qualified product unloading component 42, which then delivers the backlight module outside the AOI inspection device for the next process, such as a rework unit.

[0039] Specifically, in this embodiment, as Figure 15 and combined Figure 1and Figure 2 As shown, the transfer robot unit 5 includes a three-moving linear drive module 31 and three backlight module gripping robots 52. The three-moving linear drive module 51 spans along the first direction between the masking tape removal unit 1, the AOI detection unit 2, the masking tape application unit 3, and the unloading unit 4. The three backlight module gripping robots 52 are movably connected to the three-moving linear drive module 51. Specifically, the first backlight module gripping robot 52 is used to grip and transfer the backlight module after masking tape removal from the masking tape removal unit 1 to the AOI detection unit 2; the second backlight module gripping robot 52 is used to grip and transfer the backlight module after AOI detection from the AOI detection unit 2 to the masking tape application unit 3; and the third backlight module gripping robot 52 is used to grip and transfer the backlight module after masking tape application from the masking tape application unit 3 to the unloading unit 4. The backlight module gripping robot 52 is configured to move up and down to grip the backlight module and lift it up. The backlight module gripping robot 52 is also configured to rotate in a horizontal plane to adjust the placement direction of the backlight module.

[0040] In summary, the AOI inspection device provided by this utility model integrates the masking tape removal unit, AOI inspection unit, masking tape application unit, and unloading unit into a single AOI inspection device. During the AOI inspection process, from removing the masking tape to release the FPC circuit board, to inserting the FPC circuit board into the inspection equipment, to reapplying masking tape to fix the FPC circuit board after inspection, and finally sending the AOI-inspected backlight module to the next process, all processes are automated, improving production efficiency. Furthermore, the rational layout of the functional units makes the connections between them more compact, resulting in a smaller device size and reduced floor space required on the production floor.

[0041] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An AOI inspection device for backlight modules in display assembly equipment, characterized in that, The device includes a frame platform and a masking tape removal unit, an AOI detection unit, a masking tape application unit, and a material unloading unit arranged sequentially on the frame platform along a first direction. It also includes a transfer robot unit connected to the frame platform and spanning along the first direction between the masking tape removal unit, the AOI detection unit, the masking tape application unit, and the material unloading unit. The masking tape removal unit is configured to remove the masking tape used to attach and fix the FPC circuit board on the backlight module; the AOI inspection unit is configured to wire the FPC circuit board on the backlight module and perform AOI inspection on the backlight module; the masking tape application unit is configured to apply masking tape to fix the FPC circuit board on the backlight module; the unloading unit is configured to send the inspected backlight module to the outside of the backlight module AOI inspection device; and the transfer robot unit is configured to sequentially transfer the backlight module from the masking tape removal unit to the AOI inspection unit, the masking tape application unit, and the unloading unit.

2. The backlight module AOI detection device according to claim 1, wherein, The masking tape removal unit includes a first transfer platform assembly and a masking tape removal assembly. The first transfer platform assembly extends along a second direction on the frame platform, and the masking tape removal assembly is disposed on the second end side of the first transfer platform assembly. The first transfer platform assembly receives the backlight module loading at its first end and moves it toward the second end. The masking tape removal assembly removes the masking tape on the backlight module at the second end of the first transfer platform assembly to release the FPC circuit board. The AOI detection unit includes a second transfer platform assembly, a test drive assembly, a connector robot arm, and an AOI detection assembly. The first transfer platform assembly extends along a second direction on the frame platform. The AOI detection assembly is positioned above the second end of the first transfer platform assembly. The test drive assembly is located on the side of the second transfer platform assembly and is movably connected to it. The connector robot arm is connected to the frame platform on the same side of the test drive assembly. The second transfer platform assembly receives the backlight module at its first end and moves it toward the second end. When it moves to the working position corresponding to the connector robot arm, the connector robot arm grips the FPC circuit board on the backlight module and inserts it into the test drive assembly, so that the test drive assembly can drive the backlight module to light up. The AOI detection assembly performs AOI detection on the lit backlight module at the second end of the second transfer platform assembly. The masking adhesive application unit includes a third transfer platform assembly and a masking adhesive application assembly. The third transfer platform assembly extends along a second direction on the frame platform, and the masking adhesive application assembly is disposed on the second end side of the third transfer platform assembly. The third transfer platform assembly receives the backlight module loading at its first end and moves it toward the second end. The masking adhesive application assembly applies masking adhesive to the second end of the third transfer platform assembly to fix the FPC circuit board onto the backlight module.

3. The backlight module AOI detection device of claim 2, wherein, The first transfer platform assembly, the second transfer platform assembly, and the third transfer platform assembly each include a first linear drive module, a second linear drive module, and a support platform. The first linear drive module is connected to the frame platform and extends along the second direction. The second linear drive module is movably connected to the first linear drive module and extends along the first direction. The support platform is used to load a backlight module and is movably connected to the second linear drive module. The support platform is also connected to clamping and rotating mechanisms on opposite sides in the second direction. The clamping and rotating mechanisms are used to clamp and fix the backlight module loaded on the support platform.

4. The backlight module AOI detection device of claim 2, wherein, The masking tape removal assembly includes a liftable base, a tape-removing mechanism, and a first visual inspection mechanism. The liftable base is connected to the frame platform at the second end of the first transfer platform assembly. The tape-removing mechanism and the first visual inspection mechanism are spaced apart from each other along the second direction and are respectively liftably connected to the liftable base. The tape-removing mechanism is configured to remove the masking tape, and the first visual inspection mechanism is used to detect and confirm whether the masking tape has been removed.

5. The backlight module AOI detection device according to claim 4, wherein, The adhesive-tearing mechanism includes a first rotary drive module, a second rotary drive module, a first lifting drive module, a third linear drive module, a suction nozzle, and a gripper. The first rotary drive module is rotatably connected to the liftable base, the second rotary drive module is rotatably connected to the first rotary drive module, the first lifting drive module is rotatably connected to the second rotary drive module, the third linear drive module and the suction nozzle are rotatably connected to the first lifting drive module, and the gripper is located on the side of the suction nozzle and is movably connected to the third linear drive module. The first rotary drive module is configured to drive the second rotary drive module to rotate in a horizontal plane, the second rotary drive module is configured to drive the first lifting drive module to rotate in a vertical plane, the first lifting drive module is configured to drive the third linear drive module and the suction nozzle to move up and down, the suction nozzle is configured to absorb masking tape, and the third linear drive module is configured to drive the gripper to move toward the suction nozzle to clamp the masking tape or move away from the suction nozzle to release the masking tape.

6. The backlight module AOI detection device of claim 2, wherein, The test drive component is located below the loading platform of the second transfer stage assembly for loading the backlight module and can move synchronously with the loading platform. The test drive component includes a junction box with an upward-opening plug-in interface. When the test drive component and the backlight module loaded on the second transfer stage assembly move to the working position corresponding to the plug-in robot arm, the plug-in robot arm grips the FPC circuit board on the backlight module and plugs it into the plug-in interface, so that the test drive component and the backlight module are electrically connected and can drive the backlight module to light up. The plug-in robot arm is connected to a second vision detection mechanism, which is used to feed back the position information of the FPC circuit board on the backlight module and the plug-in interface to the plug-in robot arm.

7. The backlight module AOI detection device of claim 2, wherein, The AOI inspection assembly includes an inspection dark chamber mounted above the second end of the second transfer stage assembly and multiple inspection cameras connected to the top surface inside the inspection dark chamber.

8. The backlight module AOI detection device of claim 2, wherein, The masking adhesive application assembly includes a masking adhesive feeding mechanism, a laterally movable base, an adhesive application mechanism, and a third vision inspection mechanism. The masking adhesive feeding mechanism is a roller-type feeding, conveying, and receiving mechanism. The masking adhesive feeding mechanism and the third vision inspection mechanism are spaced apart from each other along the second direction and are respectively connected to the frame platform. The laterally movable base is connected to the frame platform on the side of the masking adhesive feeding mechanism opposite to the third transfer platform assembly. The adhesive application mechanism is movably connected to the laterally movable base and extends above the masking adhesive feeding mechanism. The adhesive application mechanism is configured to pick up masking adhesive from the masking adhesive feeding mechanism and apply the masking adhesive to the backlight module to fix the FPC circuit board. The third vision inspection mechanism is used to detect and confirm whether the masking adhesive has been applied to the predetermined position.

9. The backlight module AOI detection device according to claim 8, wherein, The adhesive application mechanism includes a second lifting drive module, a third rotary drive module, a third lifting drive module, a fourth linear drive module, an adsorption module, and a rolling module; the second lifting drive module is movably connected to the horizontally movable base, the third rotary drive module is movably connected to the second lifting drive module, the third lifting drive module and the fourth linear drive module are rotatably connected to the third rotary drive module, the adsorption module is movably connected to the third lifting drive module, and the rolling module is movably connected to the fourth linear drive module; The second lifting drive module is configured to drive the third rotary drive module to move up and down. The third rotary drive module is configured to drive the third lifting drive module and the fourth linear drive module to rotate in a vertical plane. The third lifting drive module is configured to drive the adsorption module to move up and down. The fourth linear drive module is configured to drive the rolling module to move laterally. The adsorption module is used to pick up masking adhesive from the masking adhesive feeding mechanism and apply the masking adhesive to the backlight module. The rolling module is used to roll the masking adhesive applied to the backlight module to make it adhere firmly.

10. The backlight module AOI detection device according to any one of claims 1-9, wherein, The transfer robot unit includes a three-moving linear drive module and three backlight module gripping robots. The three-moving linear drive module spans along the first direction between the masking tape removal unit, the AOI detection unit, the masking tape application unit, and the unloading unit. The three backlight module gripping robots are movably connected to the three-moving linear drive module. Specifically, the first backlight module gripping robot is used to grip and transfer the backlight module after masking tape removal from the masking tape removal unit to the AOI detection unit; the second backlight module gripping robot is used to grip and transfer the backlight module after AOI detection from the AOI detection unit to the masking tape application unit; and the third backlight module gripping robot is used to grip and transfer the backlight module after masking tape application from the masking tape application unit to the unloading unit.

Images