Assembling equipment for duplex display screen

Abstract

The invention discloses assembling equipment for a duplex display screen. A first feeding device used for feeding a TDC module, a second feeding device used for feeding a backlight module, an AOI detection device and a dispensing device of the backlight module, a finished product attaching and assembling device and a finished product discharging device are integrated into the integrated assembling equipment. According to the double-screen display screen, in the laminating assembly production of the double-screen display screen, the processes of feeding of the two backlight modules and the TDC module, AOI detection of the backlight modules, dispensing of the backlight modules, mutual laminating assembly of the TDC module and the two backlight modules and discharging of final assembled finished products are all automatically carried out, and the production efficiency of the double-screen display screen is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of liquid crystal display manufacturing equipment, and specifically relates to an assembly device for a dual-screen display. Background Technology

[0002] With the development of the intelligent vehicle industry, dual-screen displays are widely used in intelligent vehicles to save interior space and improve aesthetics. The production process of dual-screen displays requires the use of display assembly equipment to bond two backlight modules and one TDC module together. The TDC module refers to a display panel module formed by bonding a FOG (Flex On Glass) display panel and a cover glass (CG) together using OCA optical adhesive. The bonding and assembly process of dual-screen displays involves steps such as loading the two backlight modules, loading the TDC module, pressing and bonding the TDC module with the two backlight modules, and unloading the assembled product. The assembly efficiency of existing equipment needs improvement. Summary of the Invention

[0003] In view of this, the present invention provides an assembly device for a dual-screen display to solve the problem of how to improve the assembly efficiency of a dual-screen display.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A dual-screen display assembly device includes a frame platform and a first feeding device, a second feeding device, an AOI inspection device, a dispensing device, a bonding and assembly device, and a finished product unloading device disposed on the frame platform.

[0006] The bonding and assembly device is located in the middle of the frame platform. The first feeding device is located at the first end of the frame platform and connected to the bonding and assembly device. The finished product unloading device is located at the second end of the frame platform and connected to the bonding and assembly device. A second feeding device, an AOI detection device, and a dispensing device are arranged sequentially at the positions between the first feeding device and the first side of the bonding and assembly device and between the finished product unloading device and the second side of the bonding and assembly device, respectively.

[0007] The first feeding device receives the TDC module and transports it to the bonding and assembly device. The second feeding device receives the backlight module and transports it to the AOI inspection device. The AOI inspection device performs AOI inspection on the backlight module and transports it to the dispensing device. The dispensing device dispenses adhesive on the backlight module and transports it to the bonding and assembly device. The bonding and assembly device is used to bond and assemble the TDC module received from the first feeding device and two backlight modules received from the dispensing devices on both sides to form a finished display screen. The finished product unloading device is used to unload the finished display screen from the bonding and assembly device.

[0008] In the specific embodiment, the first feeding device includes a first feeding unit, a curing unit, a first cleaning unit, and a first film-removing unit arranged sequentially on the frame platform in the direction toward the bonding assembly device; the first feeding unit is used to receive the TDC module and feed the TDC module into the curing unit; the curing unit is used to cure the TDC module and feed the TDC module into the first cleaning unit; the first cleaning unit is used to clean the TDC module and feed the TDC module into the first film-removing unit; the first film-removing unit is used to remove the protective film on the surface of the TDC module and feed the TDC module into the bonding assembly device.

[0009] The second feeding device includes a second feeding unit, a second cleaning unit, and a second film-removing unit arranged sequentially on the frame platform in the direction toward the AOI inspection device; the second feeding unit is used to receive the backlight module and send the backlight module into the second cleaning unit, the second cleaning unit is used to clean the backlight module and send the backlight module into the second film-removing unit, and the second film-removing unit is used to remove the protective film on the surface of the backlight module and send the backlight module into the AOI inspection device.

[0010] In the specific solution, the first feeding unit and the second feeding unit respectively include a pallet feeding subunit, a pallet dispensing subunit and a first transfer robot unit; the pallet feeding subunit and the pallet dispensing subunit are arranged in parallel along the first direction and extend along the second direction respectively, and the first transfer robot unit is disposed above the first end of the pallet feeding subunit and the pallet dispensing subunit;

[0011] The pallet feeding subunit and the pallet dispensing subunit each include a lifting conveying section located at their first end and at least one translation conveying section sequentially connected from the lifting conveying section along the second direction toward the second end. The lifting conveying section is configured to be able to perform lifting and conveying between the plane where the translation conveying section is located and the gripping plane of the first transfer robot unit.

[0012] The pallet is fed into the subunit, the translational conveyor receives the pallet loaded with the product at the second end, and moves the pallet toward the first end to the lifting conveyor. After receiving the pallet, the lifting conveyor is driven to lift to the gripping plane of the first transfer robot unit.

[0013] In the pallet delivery subunit, the lifting and conveying unit receives the pallet after the loaded product is removed from the gripping plane of the first transfer robot unit, and then drives it to descend to the plane where the translational conveying unit is located and transfers the pallet to the translational conveying unit. The translational conveying unit then sends the pallet toward the second end.

[0014] The first transfer robot unit is used to grab and transfer the loaded product from the lifting and conveying part of the pallet feeding subunit to the downstream operation unit, and to grab and transfer the pallet after removing the loaded product to the lifting and conveying part of the pallet discharging subunit.

[0015] In a specific embodiment, the translational conveying unit includes a first conveying roller assembly and a pallet guide assembly. The first conveying roller assembly is connected to the frame platform and configured to drive the pallet to move along the second direction. The pallet guide assembly includes a first spacing adjustment mechanism and two guide plates spaced apart from each other in the first direction. The first spacing adjustment mechanism is located below the first conveying roller assembly, and the guide plates are movably connected to the first spacing adjustment mechanism by passing through the gap portion of the first conveying roller assembly from above. The first spacing adjustment mechanism is used to adjust the spacing between the two guide plates in the first direction based on the size of the pallet being conveyed.

[0016] The lifting and conveying unit includes a first lifting drive assembly, a second conveying roller assembly, and a tray limiting assembly. The first lifting drive assembly is connected to the frame platform on the side away from the translational conveying unit. The second conveying roller assembly is vertically and flexibly connected to the first lifting drive assembly on the side close to the translational conveying unit. The first lifting drive assembly is configured to drive the second conveying roller assembly to rise to the gripping plane of the first transfer robot unit or to descend to dock with the translational conveying unit. The second conveying roller assembly is configured to drive the tray to move along the second direction.

[0017] The pallet limiting assembly includes a second spacing adjustment mechanism, a first set of limiting rods, and two second sets of limiting rods spaced apart from each other in the first direction. The first set of limiting rods is fixedly connected to the first lifting drive assembly. The second spacing adjustment mechanism is connected to the machine frame platform and located below the second conveying roller assembly. The two second sets of limiting rods are movably connected to the second spacing adjustment mechanism, which is used to adjust the spacing between the two second sets of limiting rods based on the size of the pallet being transported. The first set of limiting rods and the two second sets of limiting rods extend through the gap of the second conveying roller assembly to above the gripping plane of the first transfer robot unit.

[0018] In the specific solution, the AOI inspection device includes a masking tape removal unit, an AOI inspection unit, and a masking tape application unit arranged sequentially on the frame platform in the direction of the dispensing device. It also includes a second transfer robot unit connected to the frame platform and spanning between the masking tape removal unit, the AOI inspection unit, and the masking tape application unit. The masking tape removal unit receives the backlight module from the second loading device and removes the masking tape used to attach and fix the FPC circuit board on the backlight module. The AOI inspection unit connects the FPC circuit board on the backlight module and performs AOI inspection on the backlight module. The masking tape application unit applies masking tape to fix the FPC circuit board on the backlight module and sends the backlight module into the dispensing device. The second transfer robot unit sequentially transfers the backlight module from the masking tape removal unit to the AOI inspection unit and the masking tape application unit.

[0019] In the specific solution, 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.

[0020] 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.

[0021] 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.

[0022] In the specific solution, 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.

[0023] The test drive component is disposed 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.

[0024] 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 a 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 removal 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.

[0025] In the specific embodiment, the bonding and assembly device includes a backlight feeding unit, a TDC feeding unit, an assembly unit, a finished product delivery unit, and a third transfer robot unit. The third transfer robot unit extends from the first end to the second end of the bonding and assembly device along a first direction. Two backlight feeding units are disposed at both ends of the bonding and assembly device and are respectively connected between the dispensing device and the third transfer robot unit. The TDC feeding unit is connected between the first feeding device and the assembly unit. A plurality of assembly units are disposed at intervals between the two backlight feeding units and are respectively connected to the third transfer robot unit. The finished product delivery unit is connected between the third transfer robot and the finished product unloading device.

[0026] The assembly units are arranged in parallel to each other along a first direction and extend along a second direction respectively. The third transfer robot unit extends from the first end of the bonding assembly device through the assembly units to the second end of the bonding assembly device along the first direction. The TDC feeding unit extends into the interior of the assembly units.

[0027] The backlight feeding unit is used to receive the backlight module after dispensing from the dispensing device and transport it to the third transfer robot unit. The third transfer robot unit is used to transport the backlight modules from the two backlight feeding units to the assembly unit. The TDC feeding unit is used to receive the TDC module from the first feeding device and transport the TDC module to the assembly unit. The assembly unit is used to bond and assemble the two received backlight modules and the TDC module to obtain a dual-screen display product. The third transfer robot unit is also used to transport the display product from the assembly unit to the finished product delivery unit. The finished product delivery unit is used to transport the display product to the finished product unloading device.

[0028] In the specific solution, the assembly unit includes a first linear drive module, a second linear drive module, a lower assembly platform, an upper assembly platform, a lower vision alignment component, and an upper vision alignment component; the assembly unit includes a first end and a second end in the second direction, the TDC feeding unit extends into the first end of the assembly unit, and the third transfer robot unit passes between the first end and the second end of the assembly unit.

[0029] The first linear drive module is connected to the frame platform and extends from the second end of the assembly unit along the second direction to the third transfer robot unit. The lower assembly platform is movably connected to the first linear drive module. The second linear drive module is mounted on the frame platform, extends from the first end of the assembly unit along the second direction to the second end of the assembly unit, and passes over the third transfer robot unit. The upper assembly platform is movably connected to the second linear drive module. The lower vision alignment component and the upper vision alignment component are respectively disposed between the second end of the assembly unit and the third transfer robot unit, and are located above the first linear drive module and below the second linear drive module.

[0030] The lower assembly platform is used to receive and load two backlight modules from the third transfer robot unit, and then transfer the loaded two backlight modules to the second end of the assembly unit; wherein, when the two backlight modules are transferred past the lower vision alignment component, the lower vision alignment component performs visual positioning on the two backlight modules.

[0031] The upper assembly platform is used to pick up the TDC module from the TDC feeding unit and move the TDC module to the second end of the assembly unit, and then press and attach the TDC module to the two backlight modules; wherein, when the TDC module is moved over the upper visual alignment component, the upper visual alignment component performs visual positioning of the TDC module.

[0032] In the specific solution, the finished product unloading device includes a pressure holding unit, a vision inspection unit, a first transfer unit, a second transfer unit, and a third transfer unit connected to the machine frame platform;

[0033] The visual inspection unit is disposed at the first end of the finished product unloading device, and the first transfer unit is mounted on the visual inspection unit and extends to the bonding assembly device. The first transfer unit is used to send the finished display screen sent out by the bonding assembly device into the visual inspection unit for visual inspection.

[0034] The pressure holding unit is located in the middle of the finished product unloading device, and the second transfer unit is located on the first side of the pressure holding unit and connected between the visual inspection unit and the pressure holding unit. The second transfer unit is used to transfer the finished display screen from the visual inspection unit to the pressure holding unit for pressure holding.

[0035] The finished product unloading device is provided with a finished product temporary storage unit on the second side. The third transfer unit is provided on the second side of the pressure holding unit and connected between the finished product temporary storage unit and the pressure holding unit. The third transfer unit is used to transfer the finished display screen from the pressure holding unit to the finished product temporary storage unit.

[0036] The pressure holding unit includes a support frame, and the support frame is provided with multiple transverse partitions spaced apart from bottom to top. A pressure holding station is formed between two adjacent transverse partitions. Each pressure holding station is provided with a pressure holding platform and a pressure holding counterweight. Each pressure holding station is provided with a sensing probe, which is used to detect the working status of the pressure holding station.

[0037] The second transfer unit is further configured to remove the pressure-holding counterweight from the pressure-holding station or to place the pressure-holding counterweight into the pressure-holding station.

[0038] The assembly equipment for dual-screen displays provided in this invention integrates a first feeding device for TDC module feeding, a second feeding device for backlight module feeding, an AOI inspection device and a dispensing device for the backlight module, a finished product bonding and assembly device, and a finished product unloading device into a single assembly unit. In the bonding and assembly production of dual-screen displays, the entire process—from feeding the two backlight modules and the TDC module, to AOI inspection and dispensing of the backlight module, to bonding the TDC module with the two backlight modules, and finally unloading the assembled product—is automated, improving the production efficiency of dual-screen displays. Furthermore, by rationally arranging the positions of the processing devices in each process, the connections between the processing devices are more compact, resulting in a smaller equipment size and reduced floor space required on the production floor. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the assembly equipment in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of the planar layout structure of the first feeding device in an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the structure of the first feeding unit in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of the pallet feeding subunit and the pallet dispensing subunit in an embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of the translational conveying unit in an embodiment of the present invention;

[0044] Figure 6 This is a schematic diagram of the lifting and conveying unit in an embodiment of the present invention;

[0045] Figure 7 This is a schematic diagram of the planar layout structure of the second feeding device in an embodiment of the present invention;

[0046] Figure 8 This is a schematic diagram of the structure of the second feeding unit in an embodiment of the present invention;

[0047] Figure 9 This is a schematic diagram of the planar layout structure of the AOI detection device in an embodiment of the present invention;

[0048] Figure 10 This is a three-dimensional structural diagram of the AOI detection device in an embodiment of the present invention;

[0049] Figure 11 This is a schematic diagram of the masking tape removal unit in an embodiment of the present invention;

[0050] Figure 12 This is a schematic diagram of the adhesive-tearing mechanism in an embodiment of the present invention;

[0051] Figure 13 This is a schematic diagram of the AOI detection unit in an embodiment of the present invention;

[0052] Figure 14 This is a schematic diagram of the masking adhesive application unit in an embodiment of the present invention;

[0053] Figure 15 This is a schematic diagram of the masking adhesive application component in an embodiment of the present invention;

[0054] Figure 16 This is a planar layout diagram of the dispensing device in an embodiment of the present invention;

[0055] Figure 17 This is a planar layout diagram of the bonding and assembly device in an embodiment of the present invention;

[0056] Figure 18 This is a three-dimensional structural diagram of the bonding and assembly device in an embodiment of the present invention;

[0057] Figure 19 This is a schematic diagram of the structure of the third transfer robot unit in an embodiment of the present invention;

[0058] Figure 20 This is a schematic diagram of the assembly unit in an embodiment of the present invention;

[0059] Figure 21 This is a schematic diagram of the lower assembly platform in an embodiment of the present invention;

[0060] Figure 22 This is a schematic diagram of the upper assembly platform in an embodiment of the present invention;

[0061] Figure 23 This is a schematic diagram of the planar layout structure of the finished product feeding device in an embodiment of the present invention;

[0062] Figure 24 This is a three-dimensional structural diagram of the finished product feeding device in an embodiment of the present invention;

[0063] Figure 25 This is a schematic diagram of the pressure holding unit in an embodiment of the present invention. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments of the present invention 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 the present invention shown in and described with reference to the drawings are merely exemplary, and the present invention is not limited to these embodiments.

[0065] It should be noted that the same or similar reference numerals in the accompanying drawings of the embodiments of the present invention correspond to the same or similar components. In the description of the present invention, 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 the present invention 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 the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0066] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the invention are shown in the accompanying drawings, while other details that are not closely related to the invention are omitted.

[0067] This invention provides an assembly device for a dual-screen display, such as... Figure 1 As shown, the assembly equipment includes a frame platform 100 and a first loading device 1, a second loading device 2, an AOI inspection device 3, a dispensing device 4, a bonding and assembly device 5, and a finished product unloading device 6, all mounted on the frame platform 100. This assembly equipment is mainly used for assembling dual-screen displays, specifically by bonding two backlight modules with one TDC module. The TDC module refers to a display panel module formed by bonding a FOG (Flex On Glass) display panel and a cover glass (CG) together using OCA optical adhesive.

[0068] The bonding and assembly device 5 is located in the middle of the frame platform 100. The first feeding device 1 is located at the first end of the frame platform 100 and connected to the bonding and assembly device 5. The finished product unloading device 6 is located at the second end of the frame platform 100 and connected to the bonding and assembly device 5. A second feeding device 2, an AOI inspection device 3, and a dispensing device 4 are arranged sequentially between the first feeding device 1 and the first side of the bonding and assembly device 5, and between the finished product unloading device 6 and the second side of the bonding and assembly device 5, respectively. That is, a set of second feeding device 2, AOI inspection device 3, and dispensing device 4 are arranged sequentially on both sides of the bonding and assembly device 5 for feeding, AOI inspection, and dispensing of the backlight module.

[0069] Specifically, the first feeding device 1 receives the TDC module and transports it to the bonding and assembly device 5; the second feeding device 2 receives the backlight module and transports it to the AOI inspection device 3; the AOI inspection device 3 performs AOI inspection on the backlight module and transports it to the dispensing device 4; the dispensing device 4 dispenses adhesive on the backlight module and transports it to the bonding and assembly device 5; the bonding and assembly device 5 is used to bond and assemble the TDC module received from the first feeding device 1 and the two backlight modules received from the dispensing devices 4 on both sides to form a finished display screen; and the finished product unloading device 6 unloads the finished display screen from the bonding and assembly device 5. Figure 1 In the diagram, arrow L1 represents the transmission path of the TDC module, arrow L2 represents the transmission path of the first backlight module, arrow L3 represents the transmission path of the second backlight module, and arrow L4 represents the transmission path of the finished display screen.

[0070] Based on the dual-screen display assembly equipment described above, the first feeding device 1 for feeding TDC modules, the second feeding device 2 for feeding backlight modules, the AOI inspection device 3 and dispensing device 4 for backlight modules, the finished product bonding and assembly device 5, and the finished product unloading device 6 are integrated into a single assembly unit. In the bonding and assembly production of the dual-screen display, the entire process—from feeding the two backlight modules and the TDC module, to the AOI inspection and dispensing of the backlight modules, to the bonding and assembly of the TDC module with the two backlight modules, and finally the unloading of the assembled product—is automated, improving the production efficiency of the dual-screen display. Furthermore, by rationally arranging the positions of the processing devices in each process, the connections between the processing devices are more compact, the equipment size is smaller, and the floor space occupied by the equipment on the production site is reduced.

[0071] In this embodiment, see Figure 2and combined Figure 1 The first feeding device 1 includes a first feeding unit 11, a curing unit 12, a first cleaning unit 13, and a first film-removing unit 14, which are sequentially arranged on the frame platform 100 in the direction toward the bonding assembly device 5. The first feeding unit 11 is used to receive the TDC module and feed the TDC module into the curing unit 12. The curing unit 12 is used to cure the TDC module and feed the TDC module into the first cleaning unit 13. The first cleaning unit 13 is used to clean the TDC module and feed the TDC module into the first film-removing unit 14. The first film-removing unit 14 is used to remove the protective film on the surface of the TDC module and feed the TDC module into the bonding assembly device 5.

[0072] Among them, see Figures 2 to 6 The first loading unit 11 includes a pallet feeding subunit 11a, a pallet discharging subunit 11b, and a first transfer robot unit 11c. The pallet feeding subunit 11a and the pallet discharging subunit 11c are arranged in parallel along a first direction (the length direction of the frame platform 100) and extend along a second direction (the width direction of the frame platform 100), respectively. The first transfer robot unit 11c is disposed above the first end of the pallet feeding subunit 11a and the pallet discharging subunit 11c.

[0073] Specifically, the pallet feeding subunit 11a and the pallet discharging subunit 11b each include a lifting conveying section 111 located at its first end and at least one translation conveying section 112 sequentially connected from the lifting conveying section 111 toward the second end along the second direction, such as... Figure 4 As shown in the diagram, the pallet feeding subunit 11a and the pallet discharging subunit 11b in this embodiment each include two sequentially connected translational conveying units 112. The lifting conveying unit 111 is configured to perform lifting and lowering conveying between the plane where the translational conveying unit 112 is located and the gripping plane of the first transfer robot unit 11c. The first transfer robot unit 11c includes a dual-actuator linear drive module 113, a product gripping robot 114, and a pallet gripping robot 115. The dual-actuator linear drive module 113 extends across the first end of the pallet feeding subunit 11a and the pallet discharging subunit 11b, and the product gripping robot 114 and the pallet gripping robot 115 are movably connected to the dual-actuator linear drive module 113.

[0074] In this process, the tray feeding subunit 11a receives a tray 300 loaded with the loading product 200 (specifically a TDC module) at its second end, and moves the tray 300 towards the first end to the lifting conveyor 111. The lifting conveyor 111 receives the tray 300 and then lifts it to the gripping plane of the first transfer robot unit 11c. At this point, the loading product gripping robot 114 first grips and transfers the loading product 200 from the tray 300 to the downstream operating unit, specifically the curing unit 12. Then, the tray gripping robot 115 grips and transfers the tray 300 after removing the loading product 200 to the tray delivery subunit 11b. In the pallet delivery subunit 11b, the lifting and conveying unit 111 receives the pallet 300 after the loading product 200 is removed from the gripping plane of the first transfer robot unit 11c, and then drives it to descend to the plane where the translational conveying unit 112 is located and transfers the pallet 300 to the translational conveying unit 112. The translational conveying unit 112 then sends the pallet 300 toward the second end.

[0075] Based on the above-mentioned tray feeding subunit 11a and tray discharging subunit 11b, the first loading unit 11 realizes the automatic loading of TDC modules (loading product 200) and the automatic unloading of the tray 300 used to load TDC modules.

[0076] In a specific embodiment, the translational conveying unit 112 includes a first conveying roller assembly 1121 and a pallet guide assembly 1122. The first conveying roller assembly 1121 is connected to the frame platform 100 and configured to drive the pallet 300 to move along the second direction. The pallet guide assembly 1122 includes a first spacing adjustment mechanism 1123 and two guide plates 1124 spaced apart from each other in the first direction. The first spacing adjustment mechanism 1123 is located below the first conveying roller assembly 1121. The guide plates 1124 are movably connected to the first spacing adjustment mechanism 1123, passing through the gap of the first conveying roller assembly 1121 from above. The first spacing adjustment mechanism 1123 adjusts the spacing between the two guide plates 1124 in the first direction based on the size of the pallet 300 being conveyed. During the process of the first conveying roller assembly 1121 driving the pallet 300 to move along the second direction, the pallet guide assembly 1122 guides the movement of the pallet 300, preventing the pallet 300 from tilting during conveying.

[0077] Furthermore, the translational conveying unit 112 also includes a tray stop assembly 1125. The tray stop assembly 1125 is connected to the side of the first conveyor roller assembly 1121 at the front end of the tray 300 in the conveying direction. The tray stop assembly 1125 is configured to be adjustable in height, protruding above the first conveyor roller assembly 1121 or housed below the first conveyor roller assembly 1121. When the tray stop assembly 1125 is raised and protrudes above the first conveyor roller assembly 1121, it can block and stop the tray 300 from moving forward, preventing the tray 300 behind from continuing to move and squeezing the tray 300 in front if the relevant operation in front is not completed. After the relevant operation in the front position is completed, the tray stop assembly 1125 is controlled to descend and housed below the first conveyor roller assembly 1121, so that the tray 300 can continue to move forward.

[0078] In a specific embodiment, the lifting and conveying unit 111 includes a lifting drive assembly 1111, a second conveying roller assembly 1112, and a tray limiting assembly 1113. The lifting drive assembly 1111 is connected to the frame platform 100 on the side opposite to the translational conveying unit 112. The second conveying roller assembly 1112 is vertically and flexibly connected to the lifting drive assembly 1111 on the side close to the translational conveying unit. The lifting drive assembly 1111 is configured to drive the second conveying roller assembly 1112 to rise to the gripping plane of the first transfer robot unit 11c or descend to dock with the translational conveying unit 112. The second conveying roller assembly 1112 is configured to drive the tray 300 to move along the second direction.

[0079] The pallet limiting assembly 1113 includes a second spacing adjustment mechanism 1114, a first set of limiting rods 1115, and two second sets of limiting rods 1116 spaced apart from each other in the first direction. The first set of limiting rods 1115 is fixedly connected to the lifting drive assembly 1111. The second spacing adjustment mechanism 1114 is connected to the frame platform 100 and located below the second conveying roller assembly 1112. The two second sets of limiting rods 1116 are movably connected to the second spacing adjustment mechanism 1114. The second spacing adjustment mechanism 1114 is used to adjust the spacing between the two second sets of limiting rods 1116 in the first direction based on the size of the pallet being conveyed. The first set of limiting rods 1115 and the two sets of second limiting rods 1116 extend through the gap of the second conveyor roller assembly 1112 to above the gripping plane of the first transfer robot unit 11c. The first set of limiting rods 1115 and the two sets of second limiting rods 1116 correct and limit the position of the pallet 300 transferred to the second conveyor roller assembly 1112 from three sides, so as to prevent the pallet 300 from shifting position during lifting, conveying and gripping loading and unloading.

[0080] Furthermore, the lifting and conveying unit 111 in the pallet feeding subunit 11a also includes multiple pallet separating assemblies 1117. These pallet separating assemblies 1117 are respectively connected to the top of the lifting and conveying unit 111. Specifically, they can be fixedly connected to the lifting drive assembly 1111, or connected to the second set of limiting rods 1116, or connected to the frame platform 100 via a support frame. At least some of the pallet separating assemblies 1117 are connected to two of the second set of limiting rods 1116 and can move in the first direction with the second set of limiting rods 1116. Each pallet separating assembly 1117 includes a lateral drive module and a separating plate. The lateral drive module is configured to drive the separating plate to insert into the gap between two stacked pallets 300, thereby separating the upper and lower pallets 300 from each other.

[0081] It should be noted that the TDC module refers to a display panel module formed by bonding the FOG (Flex On Glass) display panel and the cover glass (CG) together with OCA optical adhesive. Before assembling the display screen, the TDC module needs to undergo a curing operation during the loading process to ensure a firm bond between the FOG display panel and the cover glass. Therefore, in this embodiment, the curing unit 12 is provided to perform the curing operation on the TDC module. The first cleaning unit 13 is preferably equipped with a Plasma cleaning component and a USC cleaning component.

[0082] The first feeding device 1 for feeding TDC modules, as described above, automates the entire process from feeding in the tray loaded with TDC modules and feeding out the empty tray, to the pre-processing operations such as curing, cleaning and film removal of TDC modules before assembly, and then to feeding the pre-processed TDC modules into the next process equipment (the bonding and assembly device 5), which can improve production efficiency.

[0083] In this embodiment, see Figure 7 and combined Figure 1 The second loading device 2 includes a second loading unit 21, a second cleaning unit 22, and a second film-removing unit 23, which are sequentially arranged on the frame platform in the direction toward the AOI inspection device 3. The second loading unit 21 is used to receive the backlight module and send the backlight module into the second cleaning unit 22. The second cleaning unit 22 is used to clean the backlight module and send the backlight module into the second film-removing unit 23. The first film-removing unit 23 is used to remove the protective film on the surface of the backlight module and send the backlight module into the AOI inspection device 3.

[0084] Among them, see Figure 8 The second feeding unit 21 has the same structure and working mechanism as the first feeding unit 11 in the first feeding device 1, so it will not be described again. In the second feeding unit 21, the backlight module, as the feeding product 200, is also loaded onto the tray 300 for feeding.

[0085] It should be noted that the second cleaning unit 22 preferably comprises a tornado cleaning component, a plasma cleaning component, and a USC cleaning unit component in sequence. The USC cleaning unit component can be connected to the second film-removing unit 23, and the USC cleaning process is performed after the protective film on the surface of the backlight module is removed by the second film-removing unit 23. A robotic arm component 24 for transferring the backlight module is provided between the second cleaning unit 22 and the second film-removing unit 23.

[0086] The second feeding device 2 for backlight module feeding, as described above, automates the entire process from feeding in the tray loaded with backlight modules and feeding out the empty tray, to pre-processing operations such as tornado cleaning, Plasma cleaning, film removal and USC cleaning of the backlight modules, thereby improving production efficiency.

[0087] In this embodiment, see Figure 9 and combined Figure 1The AOI inspection device 3 includes a masking tape removal unit 31, an AOI inspection unit 32, and a masking tape application unit 33, arranged sequentially on the frame platform 100 in the direction towards the dispensing device 4. It also includes a second transfer robot unit 34 connected to the frame platform 100 and spanning between the masking tape removal unit 31, the AOI inspection unit 32, and the masking tape application unit 33. Specifically, the masking tape removal unit 31 receives the backlight module from the second loading device 2 and removes the masking tape used to attach and fix the FPC circuit board on the backlight module; the AOI inspection unit 32 connects the FPC circuit board on the backlight module and performs AOI inspection on the backlight module; and the masking tape application unit 33 applies masking tape to fix the FPC circuit board on the backlight module and sends the backlight module into the dispensing device 4. The second transfer robot unit 34 is used to transfer the backlight module from the masking tape removal unit 31 to the AOI detection unit 32 and the masking tape application unit 33 in sequence.

[0088] Typically, backlight modules are connected to FPC circuit boards. In the pre- and post-AOI testing processes, to prevent damage to the FPC circuit boards during transport of the backlight module, masking tape is used to fold and attach the FPC circuit boards to the back of the backlight module for fixation. In existing technology, AOI testing of backlight modules involves manual operations for removing masking tape, connecting wires, and reapplying masking tape, resulting in low testing efficiency. Therefore, in this embodiment, the AOI testing device 3 is equipped with a masking tape removal unit 31 for automatically removing masking tape, an AOI testing unit 32 for automatically connecting wires for AOI testing, and a masking tape application unit 33 for automatically reapplying masking tape. This automates the entire AOI testing process for the backlight module, improving testing efficiency.

[0089] Specifically, see Figure 11 and Figure 12 and combined Figure 9 and Figure 10 The masking tape removal unit 31 mainly includes a first transfer platform assembly 311 and a masking tape removal assembly 312. The first transfer platform assembly 311 extends along the second direction on the rack platform 100, and the masking tape removal assembly 312 is disposed on the second end side of the first transfer platform assembly 311. Specifically, the first transfer platform assembly 311 receives the backlight module at its first end and moves it towards the second end, while the masking tape removal assembly 312 removes the masking tape from the backlight module at the second end of the first transfer platform assembly 311 to release the FPC circuit board.

[0090] The first transfer platform assembly 311 includes a first linear drive module 3111, a second linear drive module 3112, and a support platform 3113. The first linear drive module 3111 is connected to the frame platform 100 and extends along the second direction. The second linear drive module 3112 is movably connected to the first linear drive module 3111 and extends along the first direction. The support platform 3113 is used to load the backlight module and is movably connected to the second linear drive module 3112. Clamping and rotating mechanisms 3114 are also connected to opposite sides of the support platform 3113 in the second direction. The clamping and rotating mechanisms 3114 are used to clamp and fix the backlight module loaded on the support platform 3113.

[0091] The masking tape removal assembly 312 includes a liftable base 312a, a tape-removing mechanism 312b, and a first visual inspection mechanism 312c. The liftable base 312a is connected to the frame platform 100 at the second end of the first transfer platform assembly 311. The tape-removing mechanism 312b and the first visual inspection mechanism 312c are spaced apart from each other along the second direction and are respectively liftably connected to the liftable base 312a. The liftable base 312a is configured to drive the tape-removing mechanism 312b and the first visual inspection mechanism 312c to move vertically and vertically as a whole. The tape-removing mechanism 312b is configured to remove the masking tape, and the first visual inspection mechanism 312c is used to detect and confirm whether the masking tape has been removed.

[0092] Specifically, in this embodiment, the adhesive-tearing mechanism 312b includes a first rotary drive module 3121, a second rotary drive module 3122, a first lifting drive module 3123, a third linear drive module 3124, a suction nozzle 3125, and a gripper 3126. The first rotary drive module 3121 is rotatably connected to the liftable base 312a, the second rotary drive module 3122 is rotatably connected to the first rotary drive module 3121, the first lifting drive module 3123 is rotatably connected to the second rotary drive module 3122, the third linear drive module 3124 and the suction nozzle 3125 are rotatably connected to the first lifting drive module 3123, and the gripper 3126 is located on the side of the suction nozzle 3125 and is movably connected to the third linear drive module 3124.

[0093] During the masking tape removal process, the first transfer platform assembly 311 first sends the loaded backlight module into the masking tape removal assembly 312 and positions it above the masking tape removal mechanism 312b. The liftable base 312a drives the masking tape removal mechanism 312b to rise and approach the bottom surface of the backlight module. Next, the first lifting drive module 3123 drives the suction nozzle 3125 to rise, pressing and adsorbing one end of the masking tape. The first lifting drive module 3123 then drives the suction nozzle 3125 to descend, causing one end of the masking tape to be torn off. Further, the third linear drive module 3124 drives the gripper 3126 to move toward the suction nozzle 3125 to clamp the torn-off end of the masking tape. Then, the first rotary drive module 3121, in conjunction with the rotary drive of the second rotary drive module 3122, 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.

[0094] Specifically, see Figure 13 and combined Figure 9 and Figure 10 The AOI detection unit 32 mainly includes a second transfer platform assembly 321, a test drive assembly 322, a connector robot arm 323, and an AOI detection assembly 324. The second transfer platform assembly 321 extends along the second direction on the rack platform 100. The AOI detection assembly 324 is disposed above the second end of the second transfer platform assembly 321. The test drive assembly 322 is located on the side of the second transfer platform assembly 321 and is movably connected to the second transfer platform assembly 321. The connector robot arm 323 is connected to the rack platform 100 on the same side of the test drive assembly 322. The second transfer platform assembly 321 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 323, the plug-in robot arm 323 clamps the FPC circuit board on the backlight module and plugs it into the test drive assembly 322, so that the test drive assembly 322 can drive the backlight module to light up. The AOI detection assembly 324 performs AOI detection on the lit backlight module at the second end of the second transfer platform assembly 321.

[0095] The second transfer platform assembly 321 has the same structure as the first transfer platform assembly 311 in the masking tape removal unit 31, so it will not be described in detail again.

[0096] In this embodiment, the test drive component 322 is disposed below the loading platform of the second transfer stage component 321 for loading the backlight module and can move synchronously with the loading platform. The test drive component 322 includes a junction box with an upward-opening connector. When the test drive component 322 and the backlight module loaded on the second transfer stage component 321 move to the working position corresponding to the connector robot arm 323, the connector robot arm 323 grips the FPC circuit board on the backlight module and inserts it into the connector, so that the test drive component 322 and the backlight module are electrically connected and can drive the backlight module to light up. A second vision detection mechanism 3231 is connected to the connector robot arm 323. The second vision detection mechanism 3231 is used to feed back the position information of the FPC circuit board on the backlight module and the connector to the connector robot arm 323, ensuring that the connector robot arm 323 can accurately grip the FPC circuit board and insert it into the connector.

[0097] It should be noted that after the AOI inspection is completed, when the second transfer robot unit 34 picks up the backlight module and transfers it to the next work unit, the FPC circuit board can be pulled out of the connector 3222 based on the gripping force of the second transfer robot unit 34, without the need for the connector robot arm 323 to pull the FPC circuit board out of the connector 3222.

[0098] In this embodiment, the AOI detection component 324 includes a detection dark chamber 3241 mounted above the second end of the second transfer stage component 321 and a plurality of detection cameras 3242 connected to the top surface inside the detection dark chamber 3241. The plurality of detection cameras 3242 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.

[0099] Specifically, see Figure 14 and Figure 15 and combined Figure 9 and Figure 10 The masking adhesive application unit 33 mainly includes a third transfer platform assembly 331 and a masking adhesive application assembly 332. The third transfer platform assembly 331 extends along the second direction on the rack platform 100, and the masking adhesive application assembly 332 is disposed on the second end side of the third transfer platform assembly 331. Specifically, the third transfer platform assembly 331 receives the backlight module at its first end and moves it towards the second end, while the masking adhesive application assembly 332 applies masking adhesive to the second end of the third transfer platform assembly 331 to fix the FPC circuit board onto the backlight module.

[0100] The third transfer platform assembly 331 has the same structure as the first transfer platform assembly 311 in the masking tape removal unit 31, so it will not be described in detail again.

[0101] In this embodiment, the masking tape application assembly 332 includes a masking tape feeding mechanism 332a, a laterally movable base 332b, an adhesive application mechanism 332c, and a third vision inspection mechanism 332d. The masking tape feeding mechanism 332a is a roller-type feeding, conveying, and receiving mechanism. The masking tape feeding mechanism 332a and the third vision inspection mechanism 332d are spaced apart from each other along the second direction and are respectively connected to the frame platform 100. The laterally movable base 332b is connected to the frame platform 100 on the side of the masking tape feeding mechanism 332a opposite to the third transfer platform assembly 331. The adhesive application mechanism 332c is movably connected to the laterally movable base 332b and extends above the masking tape feeding mechanism 332a. The laterally movable base 332b is configured to drive the adhesive applicator 332c to move along the second direction. The adhesive peeling mechanism 332c is configured to pick up masking adhesive from the masking adhesive feeding mechanism 332a and apply the masking adhesive to the backlight module to fix the FPC circuit board. The third visual inspection mechanism 332d is used to detect and confirm whether the masking adhesive has been applied to the predetermined position.

[0102] Specifically, the adhesive application mechanism 332c includes a second lifting drive module 3321, a third rotary drive module 3322, a third lifting drive module 3323, a fourth linear drive module 3324, an adsorption module 3325, and a rolling module 3326. The second lifting drive module 3321 is movably connected to a laterally movable base 332b. The third rotary drive module 3322 is movably connected to the second lifting drive module 3321. The third lifting drive module 3323 and the fourth linear drive module 3324 are rotatably connected to the third rotary drive module 3322. The adsorption module 3325 is movably connected to the third lifting drive module 3323. The rolling module 3326 is movably connected to the fourth linear drive module 3324.

[0103] When applying masking tape, the third transfer platform assembly 331 first sends the loaded backlight module into the masking tape application assembly 332 and positions it above the masking tape feeding mechanism 332a. Through the horizontal drive of the laterally movable base 332b and the vertical drive of the second lifting drive module 3321, the adsorption module 3325 and the rolling module 3326 are positioned vertically between the feeding platform of the masking tape feeding mechanism 332a and the bottom surface of the backlight module. Next, the third rotary drive module 3322 first drives the adsorption module 3325 and the rolling module 3326 to rotate towards the loading platform facing the masking adhesive feeding mechanism 332a. The third lifting drive module 3323 drives the adsorption module 3325 to descend and pick up the masking adhesive from the loading platform. The third rotary drive module 3322 then drives the adsorption module 3325 and the rolling module 3326 to rotate towards the bottom surface of the backlight module. Further, the third lifting drive module 3323 drives the adsorption module 3325 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 3323 then drives the adsorption module 3325 to descend, avoiding the movement path of the rolling module 3326. Finally, the rolling module 3326 presses against the masking adhesive that has been attached to the bottom surface of the backlight module, and the fourth linear drive module 3324 drives the rolling module 3326 to move and roll the masking adhesive, so that the masking adhesive is firmly attached to the bottom surface of the backlight module.

[0104] Furthermore, the masking adhesive application unit 33 is connected to a qualified product delivery component 35 and a defective product delivery component 36, with the qualified product delivery component 35 connected to the dispensing device 4. Backlight modules that pass AOI inspection are transferred to the dispensing device 4 via the qualified product delivery component 35, while backlight modules that fail AOI inspection are sent outside the assembly equipment via the defective product delivery component 36.

[0105] Based on the AOI inspection device 3 described above, the process of performing AOI inspection on the backlight module is fully automated, from removing the masking tape to release the FPC circuit board, to inserting the FPC circuit board into the inspection equipment, to reapplying the masking tape to fix the FPC circuit board after inspection, and finally sending the backlight module after AOI inspection into the dispensing device 4, thus improving production efficiency.

[0106] In this embodiment, see Figure 16 and combined Figure 1 The dispensing device 4 mainly includes a dispensing unit 41 and a detection unit 42 connected to the machine frame platform 100, and two transfer robot arm assemblies 43.

[0107] Two dispensing units 41 and one detection unit 42 are sequentially arranged along a first direction and extend along a second direction on the frame platform 100. The dispensing units 41 are used to dispense adhesive onto the backlight module, and the detection units 42 are used to detect the adhesive layer obtained after dispensing to confirm whether there is insufficient or broken adhesive. A first transfer robot assembly 43 spans above the two dispensing units 41, with its two ends extending to the detection unit 42 and the AOI detection device 3, respectively. It is used by the AOI detection device 3 to feed the AOI-inspected backlight module into the dispensing unit 41 and to transfer the dispensed backlight module from the dispensing unit 41 to the detection unit 42. A second transfer robot assembly 43 is mounted on the detection unit 42 and extends along the first direction to connect to the bonding assembly device 5, used to feed the backlight module from the detection unit 42 into the bonding assembly device 5.

[0108] The dispensing unit 41 is equipped with a glue thickness detection component (not shown in the attached drawings) for detecting the thickness of the glue layer obtained by dispensing. Furthermore, a defective product ejection component 44 is also provided on the side of the detection unit 42 facing the bonding assembly device 5. When the glue thickness detection component and the detection unit 42 detect a defective product, a second transfer robot component 43 sends the defective product into the defective product ejection component 44, which then ejects it outside the assembly equipment.

[0109] In this embodiment, see Figure 17 and Figure 18 and combined Figure 1 The bonding and assembly device 5 includes a backlight feeding unit 51, a TDC feeding unit 52, an assembly unit 53, a finished product delivery unit 54, and a third transfer robot unit 55. The third transfer robot unit 55 extends from a first end to a second end of the bonding and assembly device 5 along a first direction. Two backlight feeding units 51 are disposed at both ends of the bonding and assembly device 5 and are respectively connected between the dispensing device 4 and the third transfer robot unit 55. The TDC feeding unit 52 is connected between the first loading device 1 and the assembly unit 53. A plurality of assembly units 53 are disposed at intervals between two backlight feeding units 51 and are respectively connected to the third transfer robot unit 55. The finished product delivery unit 54 is connected between the third transfer robot unit 55 and the finished product unloading device 6.

[0110] The assembly units 53 (four assembly units 53 are shown in the figure) are arranged in parallel to each other along the first direction and extend along the second direction respectively. The third transfer robot unit 55 extends from the first end of the bonding assembly device 5 through the assembly units 53 to the second end of the bonding assembly device 5 along the first direction, and the TDC feeding unit 52 extends into the interior of the assembly units 53.

[0111] The backlight feeding unit 51 receives the dispensing backlight module from the dispensing device 4 and transports it to the third transfer robot unit 55. The third transfer robot unit 55 transports the backlight modules from the two backlight feeding units 51 to the assembly unit 53. The TDC feeding unit 52 receives the TDC module from the first loading device 1 and transports it to the assembly unit 53. The assembly unit 53 assembles the two received backlight modules with the TDC module to obtain a dual-screen display product. The third transfer robot unit 55 also transports the display product from the assembly unit 53 to the finished product delivery unit 54, which then transports the display product to the finished product unloading device 6.

[0112] In this embodiment, the backlight delivery unit 51 includes a transfer robot assembly 511 and a first transfer platform assembly 512 connected in sequence, and also includes a first pre-alignment assembly 513 located on the first transfer platform assembly 512. The first transfer robot assembly 511 picks up the backlight module from the dispensing device 4 and delivers it to the first transfer platform assembly 512, which then transports the received backlight module to the third transfer robot unit 55. When the backlight module moves below the first pre-alignment assembly 513, the first pre-alignment assembly 513 pre-positions the backlight module so that the third transfer robot unit 55 can accurately pick up the backlight module.

[0113] It should be noted that, as Figure 17 and Figure 18 In the figure, the first transfer robot assembly 511 in one of the backlight feeding units 51 is not shown (e.g., Figure 18 The backlight input unit 51 is located on the upper side.

[0114] In this embodiment, the TDC feeding unit 52 mainly includes a second transfer platform assembly 521 and a second pre-alignment assembly 522. The first end of the second transfer platform assembly 521 is connected to the first feeding device 1, and the second end of the second transfer platform assembly 521 extends into the interior of the plurality of assembly units 53. The second pre-alignment assembly 522 is mounted transversely across the second transfer platform assembly 521. Specifically, the second transfer platform assembly 521 receives the TDC module at its first end and then moves the TDC module toward its second end to feed it into the assembly unit 53. When the TDC module moves to a position below the second pre-alignment assembly 522, the second pre-alignment assembly 522 pre-positions the TDC module so that the assembly unit 53 can accurately grasp the TDC module.

[0115] In this embodiment, see Figure 19 and combined Figure 17 and Figure 18 The third transfer robot unit 55 includes a three-moving linear drive mechanism 551, a first gripping robot 552, a second gripping robot 553, and a third gripping robot 554. The three-moving linear drive mechanism 551 extends along a first direction from the first end of the bonding assembly device 5, sequentially passing through multiple assembly units 53 to the second end of the bonding assembly device 5. The first gripping robot 552, the second gripping robot 553, and the third gripping robot 554 are movably connected to the three-moving linear drive mechanism 551. The first gripping robot 552 is used to grip a first backlight module from one of the backlight input units 51 and feed it into the assembly unit 53. The second gripping robot 553 is used to grip a second backlight module from another backlight input unit 51 and feed it into the assembly unit 53. The third gripping robot 554 is used to grip the assembled display screen from the assembly unit 53 and feed it into the finished product output unit 54. The first gripping robot 552 and the third gripping robot 554 are fixedly connected to each other and move simultaneously.

[0116] In this embodiment, the finished product delivery unit 54 includes a second transfer robot assembly 541 and a third transfer platform assembly 542. The third transfer platform assembly 542 extends along the second direction and extends to the third transfer robot unit 55. The second transfer robot assembly 541 is connected between the finished product unloading device 6 and the third transfer platform assembly 542. The third transfer platform assembly 542 receives the finished display screen delivered from the third transfer robot unit 55, and the second transfer robot assembly 541 picks up the finished display screen from the third transfer platform assembly 542 and transports it to the finished product unloading device 6.

[0117] In this embodiment, see Figures 20 to 22 and combined Figure 17 and Figure 18 As shown, the assembly unit 53 mainly includes a first linear drive module 531, a second linear drive module 532, a lower assembly platform 533, an upper assembly platform 534, a lower vision alignment component 535, and an upper vision alignment component 536. The assembly unit 53 includes a first end 53a and a second end 53b in the second direction. The TDC feeding unit 52 extends into the first end 53a of the assembly unit 53, and the third transfer robot unit 55 passes between the first end 53a and the second end 53b of the assembly unit 53.

[0118] The first linear drive module 531 is connected to the rack platform 100 and extends from the second end 53b of the assembly unit 53 along the second direction to the third transfer robot unit 55. The lower assembly platform 533 is movably connected to the first linear drive module 531. The second linear drive module 532 is mounted on the rack platform 100, extending from the first end 53a of the assembly unit 53 along the second direction to the second end 53b of the assembly unit 53 and passing over the third transfer robot unit 55. The upper assembly platform 534 is movably connected to the second linear drive module 532. The lower vision alignment component 535 and the upper vision alignment component 536 are respectively disposed between the second end 53b of the assembly unit 53 and the third transfer robot unit 55, and are located above the first linear drive module 531 and below the second linear drive module 532.

[0119] The lower assembly platform 533 receives and loads two backlight modules from the third transfer robot unit 55, and then transfers the loaded two backlight modules to the second end 53b of the assembly unit 53. Furthermore, as the two backlight modules are transferred past the lower vision alignment component 535, the lower vision alignment component 535 performs visual positioning of the two backlight modules.

[0120] The upper assembly platform 534 is used to pick up the TDC module from the TDC feeding unit 52 and transfer the TDC module to the second end 53b of the assembly unit 53, and then press and bond the TDC module onto the two backlight modules. Furthermore, when the TDC module is transferred over the upper visual alignment component 536, the upper visual alignment component 536 performs visual positioning of the TDC module.

[0121] The lower assembly platform 533 includes a first UVW platform 533a and two bonding stage assemblies 533b. The first UVW platform 533a is movably connected to the first linear drive module 531. The two bonding stage assemblies 533b are respectively connected to the first UVW platform 533a to load the first backlight module and the second backlight module. Each bonding stage assembly 533b includes a first lifting drive mechanism 5331, a second UVW platform 5332, and a backlight support platform 5333. The first lifting drive mechanism 5331 is connected to the first UVW platform 533a. The second UVW platform 5332 is located above the first UVW platform 533a and is movably connected to the first lifting drive mechanism 5331. The backlight support platform 5333 is connected to the second UVW platform 5332.

[0122] Based on the positioning information obtained by the lower vision alignment component 535 and the upper vision alignment component 536, the two backlight modules and the TDC module are precisely aligned through the coordinated adjustment of the first UVW platform 533a and the second UVW platform 5332. After precise alignment, the upper assembly platform 534 presses and attaches the TDC module to the two backlight modules.

[0123] Furthermore, the lower assembly platform 533b also includes a positioning component 5334 for limiting the FPC circuit board on the TDC display module during bonding assembly. The positioning component 5334 is connected to the side of the backlight carrier stage 5333. By setting the positioning component 5334 to limit the position of the FPC circuit board on the TDC display module, damage to the FPC circuit board is prevented when the TDC module and the backlight module are pressed and bonded together.

[0124] The upper assembly platform 534 includes a second lifting drive module 534a and a vacuum adsorption component 534b. The second lifting drive module 534a is movably connected to the second linear drive module 532, and the vacuum adsorption component 534b is vertically connected to the second lifting drive module 534a.

[0125] Specifically, the vacuum adsorption assembly 534b includes a first adsorption part 5341 and a second adsorption part 5342. The first adsorption part 5341 is a flat adsorption plate, and the second adsorption part 5342 includes a support bracket and multiple suction nozzles. The support bracket is rotatably connected to the side of the first adsorption part 5341, and the multiple suction nozzles are connected to the support bracket and extend toward the first adsorption part 5341. The first adsorption part 5341 is used to adsorb and grip the TDC module, and the second adsorption part 5342 is used to adsorb and fix the FPC circuit board on the TDC module. By setting the second adsorption part 5342 to adsorb and fix the FPC circuit board on the TDC module, damage to the FPC circuit board due to shaking and collision is prevented during the transfer of the TDC module.

[0126] Based on the above bonding and assembly device 5, in the bonding and assembly process of the dual-screen display, from the feeding of the two backlight modules and the TDC module, to the precise alignment and mutual pressing of the TDC module with the two backlight modules, and then to the unloading of the finished display, all processes are automated, which improves production efficiency.

[0127] In this embodiment, see Figures 23 to 25 and combined Figure 1 The finished product unloading device 6 includes a pressure holding unit 61, a vision inspection unit 62, a first transfer unit 63, a second transfer unit 64 and a third transfer unit 65 connected to the machine frame platform 100.

[0128] The visual inspection unit 62 is disposed at the first end of the finished product unloading device 6, and the first transfer unit 63 is mounted on the visual inspection unit 62 and extends to the bonding assembly device 5. The first transfer unit 63 is used to send the finished display screen sent out by the bonding assembly device 5 into the visual inspection unit 62 for visual inspection.

[0129] The pressure holding unit 61 is located in the middle of the finished product unloading device 6, and the second transfer unit 54 is located on the first side of the pressure holding unit 61 and connected between the visual inspection unit 62 and the pressure holding unit 61. The second transfer unit 64 is used to transfer the finished display screen from the visual inspection unit 62 to the pressure holding unit 61 for pressure holding.

[0130] The finished product unloading device 6 has a finished product temporary storage unit 66 on its second end side. A third transfer unit 65 is located on the second side of the pressure holding unit 61 and connects the finished product temporary storage unit 66 and the pressure holding unit 61. The third transfer unit 65 is used to transfer the finished display screen from the pressure holding unit 61 to the finished product temporary storage unit 66. In a specific embodiment, the finished product temporary storage unit 66 can be configured as a movable frame. When the finished product temporary storage unit 66 is fully loaded, it can be driven by an AGV mobile trolley 400 to transfer the finished display screen to a designated location on the production site for storage.

[0131] Furthermore, the finished product unloading device 6 also includes a non-conforming product unloading conveyor belt 67, which is disposed below the first transfer unit 63 and arranged parallel to the visual inspection unit 62. The first transfer unit 63 is also used to transfer the finished display screens that fail the inspection in the visual inspection unit 62 to the non-conforming product unloading conveyor belt 67 for unloading.

[0132] During the bonding and assembly process described above in the bonding and assembly device 5, after the TDC module and the two backlight modules are pressed together, pressure holding is required. However, the pressure holding process takes a relatively long time, resulting in long waiting times for both the preceding and following processes, and thus production efficiency needs to be improved. Therefore, in the solution of this application, based on the finished product unloading device 6 provided in the above embodiment, a pressure holding unit 61 for holding the finished display screen is provided on the unloading and conveying path. Thus, preliminary pressure holding can be performed in the bonding and assembly device 5, and then pressure holding can continue during the finished product unloading process. This allows for earlier release of the pressure holding operation of the bonding and assembly device 5, reduces the waiting time of the preceding processes of the bonding and assembly device 5, and effectively improves the overall production efficiency of the display screen assembly equipment.

[0133] In this embodiment, as Figure 25 As shown, the pressure-holding unit 61 includes a support frame 611, with multiple transverse partitions 612 spaced apart from bottom to top. A pressure-holding station 61a is formed between two adjacent transverse partitions 612. Each pressure-holding station 61a is equipped with a pressure-holding platform 613 and a pressure-holding counterweight 614. The second transfer unit 64 is further configured to remove the pressure-holding counterweight 614 from the pressure-holding station 61a or to place the pressure-holding counterweight 614 into the pressure-holding station 61a.

[0134] Furthermore, each of the pressure holding stations 61a is provided with a sensing probe 615, which is used to detect the working status of the pressure holding station 61a.

[0135] The working process of the pressure holding unit 61 as described above mainly includes:

[0136] (a1) The working status of the pressure holding station 61a is detected by the sensing probe 615 to determine whether the pressure holding station 61a is in an idle state or in a pressure holding state.

[0137] (a2) After the second transfer unit 64 removes the visually inspected finished display screen from the visual inspection unit 62, it selects one of the idle pressure holding stations 61a. The second transfer unit 64 takes out the pressure holding counterweight 614 from the pressure holding station 61a, and then sends the finished display screen to the pressure holding station 61a and places it on the pressure holding platform 613. The second transfer unit 64 then sends the pressure holding counterweight 614 to the pressure holding station 61a and places it on the finished display screen. The pressure holding counterweight 614 presses against the finished display screen to maintain pressure.

[0138] (a3) After the pressure holding is completed, the second transfer unit 64 takes out the pressure holding counterweight 614, and then the third transfer unit 65 takes out the finished display screen. The second transfer unit 64 then sends the pressure holding counterweight 614 into the pressure holding station 61a and places it on the pressure holding platform 613.

[0139] In this embodiment, the finished product unloading device has two pressure holding units 61 arranged side by side. Each pressure holding unit 61 has multiple pressure holding stations 61a arranged from bottom to top. This allows multiple finished display screens to be pressure held simultaneously. While satisfying the pressure holding operation in the front-end assembly device in advance, a longer pressure holding time can be set in the finished product unloading device. This improves production efficiency while ensuring the quality of the finished display screens.

[0140] 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 assembly device for a dual-screen display, characterized in that, It includes a frame platform and a first feeding device, a second feeding device, an AOI inspection device, a dispensing device, a bonding and assembly device, and a finished product unloading device, all mounted on the frame platform. The bonding and assembly device is located in the middle of the frame platform. The first feeding device is located at the first end of the frame platform and connected to the bonding and assembly device. The finished product unloading device is located at the second end of the frame platform and connected to the bonding and assembly device. A second feeding device, an AOI detection device, and a dispensing device are arranged sequentially at the positions between the first feeding device and the first side of the bonding and assembly device and between the finished product unloading device and the second side of the bonding and assembly device, respectively. The first feeding device receives the TDC module and transports it to the bonding and assembly device. The second feeding device receives the backlight module and transports it to the AOI inspection device. The AOI inspection device performs AOI inspection on the backlight module and transports it to the dispensing device. The dispensing device dispenses adhesive on the backlight module and transports it to the bonding and assembly device. The bonding and assembly device is used to bond and assemble the TDC module received from the first feeding device and two backlight modules received from the dispensing devices on both sides to form a finished display screen. The finished product unloading device is used to unload the finished display screen from the bonding and assembly device.

2. The assembly equipment according to claim 1, characterized in that, The first feeding device includes a first feeding unit, a curing unit, a first cleaning unit, and a first film peeling unit arranged sequentially on the frame platform in the direction toward the bonding assembly device; The first feeding unit is used to receive the TDC module and send the TDC module into the curing unit. The curing unit is used to cure the TDC module and send the TDC module into the first cleaning unit. The first cleaning unit is used to clean the TDC module and send the TDC module into the first film-removing unit. The first film-removing unit is used to remove the protective film on the surface of the TDC module and send the TDC module into the bonding and assembly device. The second feeding device includes a second feeding unit, a second cleaning unit, and a second film-removing unit arranged sequentially on the frame platform in the direction toward the AOI inspection device; the second feeding unit is used to receive the backlight module and send the backlight module into the second cleaning unit, the second cleaning unit is used to clean the backlight module and send the backlight module into the second film-removing unit, and the second film-removing unit is used to remove the protective film on the surface of the backlight module and send the backlight module into the AOI inspection device.

3. The assembly equipment according to claim 2, characterized in that, The first loading unit and the second loading unit respectively include a pallet feeding subunit, a pallet discharging subunit and a first transfer robot unit; the pallet feeding subunit and the pallet discharging subunit are arranged in parallel along a first direction and extend along a second direction respectively, and the first transfer robot unit is disposed above the first end of the pallet feeding subunit and the pallet discharging subunit; The pallet feeding subunit and the pallet dispensing subunit each include a lifting conveying section located at their first end and at least one translation conveying section sequentially connected from the lifting conveying section along the second direction toward the second end. The lifting conveying section is configured to be able to perform lifting and conveying between the plane where the translation conveying section is located and the gripping plane of the first transfer robot unit. The pallet is fed into the subunit, the translational conveyor receives the pallet loaded with the product at the second end, and moves the pallet toward the first end to the lifting conveyor. After receiving the pallet, the lifting conveyor is driven to lift to the gripping plane of the first transfer robot unit. In the pallet delivery subunit, the lifting and conveying unit receives the pallet after the loaded product is removed from the gripping plane of the first transfer robot unit, and then drives it to descend to the plane where the translational conveying unit is located and transfers the pallet to the translational conveying unit. The translational conveying unit then sends the pallet toward the second end. The first transfer robot unit is used to grab and transfer the loaded product from the lifting and conveying part of the pallet feeding subunit to the downstream operation unit, and to grab and transfer the pallet after removing the loaded product to the lifting and conveying part of the pallet discharging subunit.

4. The assembly equipment according to claim 3, characterized in that, The translational conveying unit includes a first conveying roller assembly and a pallet guide assembly; the first conveying roller assembly is connected to the frame platform and configured to drive the pallet to move along the second direction; the pallet guide assembly includes a first spacing adjustment mechanism and two guide plates spaced apart from each other in the first direction, the first spacing adjustment mechanism is disposed below the first conveying roller assembly, and the guide plates are movably connected to the first spacing adjustment mechanism by passing through the gap portion of the first conveying roller assembly from above, and the first spacing adjustment mechanism is used to adjust the spacing between the two guide plates in the first direction based on the size of the pallet being conveyed; The lifting and conveying unit includes a first lifting drive assembly, a second conveying roller assembly, and a tray limiting assembly. The first lifting drive assembly is connected to the frame platform on the side away from the translational conveying unit. The second conveying roller assembly is vertically and flexibly connected to the first lifting drive assembly on the side close to the translational conveying unit. The first lifting drive assembly is configured to drive the second conveying roller assembly to rise to the gripping plane of the first transfer robot unit or to descend to dock with the translational conveying unit. The second conveying roller assembly is configured to drive the tray to move along the second direction. The pallet limiting assembly includes a second spacing adjustment mechanism, a first set of limiting rods, and two second sets of limiting rods spaced apart from each other in the first direction. The first set of limiting rods is fixedly connected to the first lifting drive assembly. The second spacing adjustment mechanism is connected to the machine frame platform and located below the second conveying roller assembly. The two second sets of limiting rods are movably connected to the second spacing adjustment mechanism, which is used to adjust the spacing between the two second sets of limiting rods based on the size of the pallet being transported. The first set of limiting rods and the two second sets of limiting rods extend through the gap of the second conveying roller assembly to above the gripping plane of the first transfer robot unit.

5. The assembly equipment according to claim 1, characterized in that, The AOI inspection device includes a masking tape removal unit, an AOI inspection unit, and a masking tape application unit arranged sequentially on the frame platform in the direction of the dispensing device. It also includes a second transfer robot unit connected to the frame platform and spanning between the masking tape removal unit, the AOI inspection unit, and the masking tape application unit. The masking tape removal unit receives the backlight module from the second loading device and removes the masking tape used to attach and fix the FPC circuit board on the backlight module. The AOI inspection unit connects the FPC circuit board on the backlight module and performs AOI inspection on the backlight module. The masking tape application unit applies masking tape to fix the FPC circuit board on the backlight module and sends the backlight module into the dispensing device. The second transfer robot unit sequentially transfers the backlight module from the masking tape removal unit to the AOI inspection unit and the masking tape application unit.

6. The assembly equipment according to claim 5, characterized in that, 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.

7. The assembly equipment according to claim 6, characterized in that, 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. The test drive component is disposed 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. 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 a 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 removal 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.

8. The assembly equipment according to claim 1, characterized in that, The bonding and assembly device includes a backlight feeding unit, a TDC feeding unit, an assembly unit, a finished product delivery unit, and a third transfer robot unit. The third transfer robot unit extends from a first end to a second end of the bonding and assembly device along a first direction. Two backlight feeding units are disposed at both ends of the bonding and assembly device and are respectively connected between the dispensing device and the third transfer robot unit. The TDC feeding unit is connected between the first feeding device and the assembly unit. A plurality of assembly units are disposed at intervals between the two backlight feeding units and are respectively connected to the third transfer robot unit. The finished product delivery unit is connected between the third transfer robot and the finished product unloading device. The assembly units are arranged in parallel to each other along a first direction and extend along a second direction respectively. The third transfer robot unit extends from the first end of the bonding assembly device through the assembly units to the second end of the bonding assembly device along the first direction. The TDC feeding unit extends into the interior of the assembly units. The backlight feeding unit is used to receive the backlight module after dispensing from the dispensing device and transport it to the third transfer robot unit. The third transfer robot unit is used to transport the backlight modules from the two backlight feeding units to the assembly unit. The TDC feeding unit is used to receive the TDC module from the first feeding device and transport the TDC module to the assembly unit. The assembly unit is used to bond and assemble the two received backlight modules and the TDC module to obtain a dual-screen display product. The third transfer robot unit is also used to transport the display product from the assembly unit to the finished product delivery unit. The finished product delivery unit is used to transport the display product to the finished product unloading device.

9. The assembly equipment according to claim 8, characterized in that, The assembly unit includes a first linear drive module, a second linear drive module, a lower assembly platform, an upper assembly platform, a lower vision alignment component, and an upper vision alignment component; the assembly unit includes a first end and a second end in the second direction, the TDC feeding unit extends into the first end of the assembly unit, and the third transfer robot unit passes between the first end and the second end of the assembly unit. The first linear drive module is connected to the frame platform and extends from the second end of the assembly unit along the second direction to the third transfer robot unit. The lower assembly platform is movably connected to the first linear drive module. The second linear drive module is mounted on the frame platform, extends from the first end of the assembly unit along the second direction to the second end of the assembly unit, and passes over the third transfer robot unit. The upper assembly platform is movably connected to the second linear drive module. The lower vision alignment component and the upper vision alignment component are respectively disposed between the second end of the assembly unit and the third transfer robot unit, and are located above the first linear drive module and below the second linear drive module. The lower assembly platform is used to receive and load two backlight modules from the third transfer robot unit, and then transfer the loaded two backlight modules to the second end of the assembly unit; wherein, when the two backlight modules are transferred past the lower vision alignment component, the lower vision alignment component performs visual positioning on the two backlight modules. The upper assembly platform is used to pick up the TDC module from the TDC feeding unit and move the TDC module to the second end of the assembly unit, and then press and attach the TDC module to the two backlight modules; wherein, when the TDC module is moved over the upper visual alignment component, the upper visual alignment component performs visual positioning of the TDC module.

10. The assembly equipment according to claim 1, characterized in that, The finished product unloading device includes a pressure holding unit, a vision inspection unit, a first transfer unit, a second transfer unit, and a third transfer unit connected to the machine frame platform; The visual inspection unit is disposed at the first end of the finished product unloading device, and the first transfer unit is mounted on the visual inspection unit and extends to the bonding assembly device. The first transfer unit is used to send the finished display screen sent out by the bonding assembly device into the visual inspection unit for visual inspection. The pressure holding unit is located in the middle of the finished product unloading device, and the second transfer unit is located on the first side of the pressure holding unit and connected between the visual inspection unit and the pressure holding unit. The second transfer unit is used to transfer the finished display screen from the visual inspection unit to the pressure holding unit for pressure holding. The finished product unloading device is provided with a finished product temporary storage unit on the second side. The third transfer unit is provided on the second side of the pressure holding unit and connected between the finished product temporary storage unit and the pressure holding unit. The third transfer unit is used to transfer the finished display screen from the pressure holding unit to the finished product temporary storage unit. The pressure holding unit includes a support frame, and the support frame is provided with multiple transverse partitions spaced apart from bottom to top. A pressure holding station is formed between two adjacent transverse partitions. Each pressure holding station is provided with a pressure holding platform and a pressure holding counterweight. Each pressure holding station is provided with a sensing probe, which is used to detect the working status of the pressure holding station. The second transfer unit is also used to remove the pressure-holding counterweight from the pressure-holding station or to place the pressure-holding counterweight into the pressure-holding station.

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