Manufacturing method and system of energy-saving Mini LED backlight module

Abstract

The invention discloses a manufacturing method and system of an energy-saving Mini LED backlight module, and particularly relates to the technical field of backlight modules.The system comprises a shell conveying unit, an internal structural part feeding system, an assembling operation driving unit and a grabbing unit, a covering cover is arranged on the outer side of a grabbing disc and used for being attached to the outer wall of a shell, and the shell conveying unit and the internal structural part feeding system are arranged on the outer side of the grabbing disc; a downward extending structure is arranged at the bottom of the grabbing disc and corresponds to the inner wall of the shell, an air exhaust space is formed between the covering cover and the downward extending structure, an air exhaust pipe communicated with the air exhaust space is arranged on the grabbing disc, and the air exhaust pipe is connected with air exhaust equipment. According to the Mini LED backlight module, air is extracted from the air extraction space, in the descending process of the backlight plate assembly, air at the bottom of the backlight plate assembly cannot reversely extrude the backlight plate assembly, the manufacturing quality of the Mini LED backlight module is greatly guaranteed, in the actual assembling process, the descending speed of the backlight plate assembly can be increased, the assembling efficiency is further improved, and the production cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of backlight modules, and more specifically, to a method and system for manufacturing an energy-saving MiniLED backlight module. Background Art

[0002] MiniLED backlight modules use MiniLED chips that are smaller than traditional LEDs to provide backlighting. This technology combines the advantages of LCD panels and MiniLEDs, and can significantly improve display quality without significantly increasing costs. Since MiniLED can adjust the brightness of each area according to the displayed content, it can be more energy-efficient than traditional LED backlights.

[0003] The MiniLED backlight module is mainly composed of MiniLED chips, printed circuit boards (PCBs), driver ICs, reflectors, light guide plates (LGPs), diffusers, brightness enhancement films (BEFs), outer shells and other structures.

[0004] During the manufacturing process of MiniLED backlight modules, it is necessary to print or etch circuit patterns on the PCB board, and use SMT and other technologies to mount the MiniLED chip and other electronic components on the PCB board. Then, place the reflective sheet on the PCB board to ensure that it is close to the PCB board to maximize the light reflection efficiency and reduce light loss (in some backlight modules, a reflective film or reflective paint will be mounted on the surface of the PCB board for direct reflection) to form a backlight panel assembly. The backlight panel is then installed in its corresponding housing, and then optical structures such as the light guide plate (LGP), diffuser, and brightness enhancement film (BEF) are installed on the backlight panel assembly in turn. The housing is then closed and each structure is fixed.

[0005] For some MiniLED backlight module products, in order to reduce the overall thickness of the backlight module and improve the vibration and impact resistance of the backlight module, a soft substrate (flexible printed circuit board, FPC) is used to make the backlight panel assembly. However, since a large number of densely packed MiniLED chips are mounted on the surface of the substrate, full-support adsorption and clamping cannot be used when grabbing and installing the backlight panel assembly (to avoid the adsorption or grabbing structure affecting the MiniLED chip). Therefore, local support is required. For example, four sets of adsorption structures are used to adsorb and grab the four top corners of the backlight panel assembly and install it.

[0006] Among them, for some display screens that require narrow bezels, the bezels of the corresponding backlight modules are also relatively narrow, which requires the backlight panel assembly to fully adapt to and fill the interior of the outer shell to ensure that the light source can cover the entire surface of the outer shell. Therefore, during design, the edge of the backlight panel assembly needs to be adapted to the outer shell frame as much as possible, and the edge gap of the backlight panel assembly should not be too large.

[0007] When the backlight panel assembly is placed inside the shell, since the backlight panel assembly covers a large area and forms a piston-like structure, the air inside the shell cannot be discharged quickly during the installation process, which in turn has a reverse effect on the backlight panel assembly, especially for large backlight panel assemblies, the middle part of which is easily squeezed by the reverse squeeze of the air inside the shell and bulges upward, thereby pulling the material at the corners, and causing lateral tension or even sliding between the adsorption structure and the area of ​​the backlight panel assembly it adsorbs, which will cause lateral squeezing of the MiniLED chip that is in direct contact with or near the adsorption structure. In severe cases, it may even cause the MiniLED chip to fall off and affect the production quality. When the above-mentioned lateral tension is too large, causing the adsorption structure and the backlight panel assembly to be displaced, it will also affect the assembly accuracy, which has a great impact on the manufacturing and production of the MiniLED backlight module. Summary of the invention

[0008] The present invention provides a method and system for manufacturing an energy-saving MiniLED backlight module, and aims to solve the problem that when the backlight panel assembly of the existing flexible substrate is placed inside the outer shell, the air inside the outer shell cannot be discharged quickly, thereby forming a reverse effect on the backlight panel assembly, affecting the backlight panel assembly, and in severe cases even causing the MiniLED chip to fall off and affecting the production quality.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a manufacturing system for an energy-saving MiniLED backlight module, comprising a shell conveying unit, an internal structural component feeding system, an assembly operation driving unit and a grasping unit, wherein the shell conveying unit is used to convey the shell, the internal structural component feeding system is used to feed and convey the internal structural components, and the grasping unit comprises a grasping plate, on which a plurality of vacuum suction cups are arranged, and the vacuum suction cups are connected to a vacuum pumping device; A covering cover is provided on the outside of the grabbing plate, and the covering cover is used to fit with the outer wall of the shell. A downward extension structure is provided on the bottom of the grabbing plate, and the downward extension structure is provided corresponding to the inner wall of the shell. An exhaust space is formed between the covering cover and the downward extension structure. An exhaust pipe connected to the exhaust space is provided on the grabbing plate, and the exhaust pipe is connected to the exhaust equipment. When the internal structural parts enter the shell, the exhaust space is connected to the lower space of the internal structural parts through the gap between the internal structural parts and the shell.

[0010] In a preferred embodiment, an edge pressing component is provided at a position at the bottom of the downwardly extending structure corresponding to the edge of the backlight assembly, and the edge pressing component is used to fit with the edge of the internal structural member, and the edge pressing component includes a cushion structure.

[0011] In a preferred embodiment, the internal structural component loading system includes a pallet conveying assembly and a pallet, the pallet conveying assembly is used to convey the pallet, and the internal structural component includes a backlight panel assembly and a light-transmitting panel assembly, and the backlight panel assembly and the light-transmitting panel assembly are placed in the pallet.

[0012] In a preferred embodiment, the edge pressing assembly also includes an arc-shaped movable frame, which is provided with two groups, and the two groups of arc-shaped movable frames are respectively arranged on two opposite sides of the grabbing plate, and soft cushion structures are respectively installed on the bottom of the other two opposite side surfaces of the grabbing plate, and a flexible pressing strip is fixedly installed on the bottom end of the arc-shaped movable frame, and an arc-shaped guide structure is arranged inside the grabbing plate, and the arc-shaped movable frame slides with the arc-shaped guide structure. A movable frame driver for driving the arc-shaped movable frame to move is also installed in the grabbing plate, and adsorption holes are arranged in the flexible pressing strip, and the adsorption holes are connected to the vacuum equipment.

[0013] In a preferred embodiment, the movable frame driver is a cylinder structure, and the arc-shaped movable frame is connected to the output end of the movable frame driver through a flexible shaft.

[0014] In a preferred embodiment, after the arc-shaped movable frame drives the edge of the backlight panel assembly to bend upward, a closed space is formed between the upper part of the backlight panel assembly and the inner cavity of the grabbing plate, an inflation tube is fixedly installed on the grabbing plate, the inflation tube is connected to the inflation device, and multiple groups of distance sensors for detecting the distance between the backlight panel assembly and the grabbing plate are arranged inside the grabbing plate.

[0015] In a preferred embodiment, the flexible pressure strip is a rubber structure, the flexible pressure strip is fixedly bonded to the arc movable frame, and the connecting surface between the arc movable frame and the flexible pressure strip is set as an inclined surface, which is inclined downward on the side close to the central area of ​​the backlight panel assembly.

[0016] In a preferred embodiment, the assembly operation drive unit includes a support frame, which is arranged above the shell conveying unit and the internal structural parts feeding system, and a Y-axis driver is arranged on the support frame, an X-axis driver is arranged on the output end of the Y-axis driver, a Z-axis driver is arranged on the output end of the X-axis driver, and the grabbing disk is fixedly installed on the output end of the Z-axis driver. The Y-axis driver is used to drive the grabbing unit to move along the Y-axis, the X-axis driver is used to drive the grabbing unit to move along the X-axis, and the Z-axis driver is used to drive the grabbing unit to move up and down along the Z-axis.

[0017] In a preferred embodiment, a shell positioning unit is provided at the shell conveying unit corresponding to its assembly station, and the shell positioning unit includes a mounting frame and a lifting frame. The mounting frame is fixedly installed on the shell conveying unit, and the lifting frame is vertically arranged on the mounting frame. Side clamping plates are slidably provided at both ends of the lifting frame, and a positioning abutment plate is slidably provided in the middle part of the lifting frame. The side clamping plates slide along the length direction of the lifting frame, and the sliding direction of the positioning abutment plate is perpendicular to the sliding direction of the side clamping plates.

[0018] A method for manufacturing an energy-saving MiniLED backlight module comprises the following steps: Step 1: The shell is transported to the assembly station by the shell transport unit, and the shell is positioned by the shell positioning unit, and at the same time, the tray with the backlight panel assembly and the light-transmitting panel assembly is transported to the loading station by the tray transport assembly; Step 2: The assembly operation driving unit drives the grabbing unit to grab the backlight panel assembly from the tray, and assembles the backlight panel assembly into the housing; Step 3: When the cover is in contact with the outer wall of the shell to form a closed air extraction space, the air extraction device is turned on to exhaust air from the air extraction pipe; Step 4: After the backlight panel assembly is assembled in place, the exhaust device is turned off, the vacuum suction cup is turned off, and the grabbing unit is driven to leave the housing; Step 5: drive the grabbing unit to the tray again, grab the light-transmitting plate assembly in the tray by suction, and assemble the light-transmitting plate assembly into the housing; Step 6: The assembled shell is output to a subsequent processing station through a shell conveying unit.

[0019] The beneficial effects of the present invention are as follows: the present invention turns on the exhaust device when the backlight panel assembly descends in the shell, and exhausts air from the exhaust space through the exhaust pipe, so that the air below the backlight panel assembly can quickly overflow and be discharged from the edge gap thereof, and then during the descending process of the backlight panel assembly, the air at its bottom will not produce reverse extrusion on the backlight panel assembly, and the backlight panel assembly will not produce a large amount of deformation during the descending process to cause lateral pulling force or even displacement between the suction nozzle of the vacuum suction cup and its surface, especially when there is a glue dot package on the surface of the MiniLED chip, the glue dot package will not be damaged or scratched, which greatly ensures the manufacturing quality of the MiniLED backlight module, and because the present invention can accelerate the exhaust of the air at the bottom of the backlight panel assembly by exhausting air during the actual assembly process, therefore, during the actual assembly, the lowering speed of the backlight panel assembly can also be increased, thereby further improving the assembly efficiency and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the manufacturing process of the present invention.

[0022] Figure 3 This is a diagram showing a state in which the grabbing unit of the present invention installs the backlight panel assembly into the housing.

[0023] Figure 4 The figure is a schematic diagram of the airflow at the bottom when the backlight panel assembly of the present invention is installed.

[0024] Figure 5 This is a state diagram of the edge pressing component after being improved according to the present invention.

[0025] Figure 6 This is a diagram showing the improved edge pressing assembly of the present invention pressing down the raised portion of the backlight assembly to restore the state.

[0026] Figure 7 It is a top view of the internal structural parts feeding system of the present invention.

[0027] Figure 8 It is a three-dimensional diagram of the housing positioning unit of the present invention.

[0028] Fig. 9 This is a diagram showing a state in which the housing positioning unit of the present invention has completely positioned the housing.

[0029] Fig.10 The figure is a schematic diagram of the suction position of the suction nozzle of the vacuum suction cup and the backlight panel assembly of the present invention.

[0030] Fig.11 The manufacturing method flow chart of the present invention.

[0031] The accompanying drawings are marked as follows: 1. shell conveying unit; 2. internal structural parts feeding system; 21. tray conveying assembly; 22. tray; 23. internal structural parts; 231. backlight panel assembly; 232. light-transmitting panel assembly; 3. assembly operation drive unit; 31. support frame; 32. Y-axis driver; 33. X-axis driver; 34. Z-axis driver; 4. grabbing unit; 41. grabbing plate; 411. downward extension structure; 412. arc-shaped guide structure; 42. vacuum suction cup; 43. covering cover; 431. exhaust space; 432. exhaust pipe; 44. edge pressing assembly; 441. cushion structure; 442. arc-shaped movable frame; 443. flexible pressing strip; 444. movable frame driver; 445. adsorption hole; 45. inflation pipe; 5. shell positioning unit; 51. mounting frame; 52. lifting frame; 53. side clamping plate; 54. positioning abutment plate; 6. shell. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0033] Refer to the instruction manual Figures 1 to 10 A manufacturing system for an energy-saving MiniLED backlight module includes a shell conveying unit 1, an internal structural component feeding system 2, an assembly operation driving unit 3 and a grabbing unit 4, wherein the shell conveying unit 1 is used to convey a shell 6, the internal structural component feeding system 2 is used to load an internal structural component 23, the internal structural component 23 includes a backlight panel assembly 231 and a light-transmitting panel assembly 232, the grabbing unit 4 is used to absorb and grab the backlight panel assembly 231 and the light-transmitting panel assembly 232, and the assembly operation driving unit 3 is used to drive the grabbing unit 4 to move so that it can be moved and converted between the loading station on the internal structural component feeding system 2 and the assembly station on the shell conveying unit 1.

[0034] During actual manufacturing, the shell conveying unit 1 conveys the shell 6 to the assembly station, the grabbing unit 4 first absorbs and grabs the backlight panel assembly 231 from the loading station of the internal structural parts loading system 2, and is driven by the assembly operation driving unit 3 to move to the assembly station of the shell conveying unit 1, and the backlight panel assembly 231 is assembled into the interior of the shell 6, and then the light-transmitting panel assembly 232 is absorbed and assembled into the shell 6, wherein the backlight panel assembly 231 is mainly a pre-combined structure of a flexible circuit board and a reflective structure, and the light-transmitting panel assembly 232 mainly includes a light guide plate, a diffuser, a brightening film, etc.

[0035] It should be noted that in this embodiment, refer to the attached Figure 7 The internal structural parts feeding system 2 mainly includes a tray conveying assembly 21 and a tray 22. The tray conveying assembly 21 is used to convey the tray 22. The backlight panel assembly 231 and the light-transmitting panel assembly 232 are pre-placed in the tray 22 and conveyed to the feeding station by the tray conveying assembly 21 for the assembly operation driving unit 3 and the grabbing unit 4 to pick up the materials. Among them, the light-transmitting panel assembly 232 can be a pre-combined structure of various structures or a separate structure. The backlight panel assembly 231 and the light-transmitting panel assembly 232 required for each group of MiniLED backlight module products are arranged together in the same tray 22 according to their size and shape for assembly operation. The above is only one of the feeding methods provided in this embodiment. In actual use, a separate conveying structure can also be used to convey and feed the backlight panel assembly 231 and the light-transmitting panel assembly 232.

[0036] Among them, the MiniLED chip, as the core light-emitting element, is usually between 50 and 200 microns in size and can achieve fine brightness control. The printed circuit board PCB is used to carry the foundation of the MiniLED chip and other electronic components. The driver IC is responsible for providing current and voltage to the MiniLED and realizing local dimming function. The reflector can maximize the light reflection efficiency and reduce light loss. The light guide plate is used to convert the point light source into a uniformly distributed surface light source. The diffuser can mix and homogenize the light and eliminate bright spots or dark areas. The brightening film BEF can increase the light output intensity, and the outer shell is mainly used to fix all components and protect the internal structure so that all structures form a complete backlight module.

[0037] For further information, please refer to the attached manual. Figure 2 and Figure 3 The gripping unit 4 includes a gripping plate 41, on which a plurality of vacuum suction cups 42 are arranged. The vacuum suction cups 42 are connected to a vacuum pump, and the vacuum suction cups 42 adsorb the backlight panel assembly 231 (or the light-transmitting panel assembly 232) through the suction nozzle at the bottom thereof (refer to the attached manual). Fig.10 When designing the position of the vacuum suction cup 42, it is necessary to ensure that the actual contact portion of the suction nozzle of the vacuum suction cup 42 does not contact the MiniLED chip on the backlight panel assembly 231, wherein the suction nozzle can be individually set according to the backlight panel assembly 231, and the MiniLED chip is positioned at the center and outside of the suction nozzle as much as possible). A covering cover 43 is provided on the outside of the grabbing plate 41, and the covering cover 43 is fitted with the outer wall of the shell 6 during assembly. A downward extension structure 411 is provided at the bottom of the grabbing plate 41, and the downward extension structure 411 is assembled. When the backlight panel assembly 231 or the light-transmitting panel assembly 232 enters the housing 6, the air extraction space 431 is connected to the lower space of the backlight panel assembly 231 through the gap between the backlight panel assembly 231 and the inner wall of the housing 6, and during the assembly process, refer to the attached manual. Figure 4The grab plate 41 drives the backlight panel assembly 231 to descend in the housing 6. At the same time, the suction device is turned on to extract air from the suction space 431 through the suction pipe 432, so that the air below the backlight panel assembly 231 can quickly overflow and be discharged from the edge gap thereof. In the process of the backlight panel assembly 231 descending, the air at its bottom will not produce reverse extrusion on the backlight panel assembly 231, and the backlight panel assembly 231 will not produce a large amount of deformation during the descending process, which will cause the suction nozzle of the vacuum suction cup 42 to generate lateral tension or even displacement with its surface, especially in Min. When there is glue packaging on the surface of the iLED chip, it will not cause damage or scratches to the glue packaging, which greatly ensures the manufacturing quality of the MiniLED backlight module. In addition, since the backlight panel assembly 231 is lowered more smoothly during assembly, the assembly accuracy of the backlight panel assembly 231 can also be improved. At the same time, since the present embodiment can accelerate the discharge of air at the bottom of the backlight panel assembly 231 by vacuuming during the actual assembly process, the lowering speed of the backlight panel assembly 231 can also be increased during actual assembly, thereby further improving assembly efficiency and saving production costs.

[0038] It should be noted that the above working method only takes the assembly of the backlight panel assembly 231 as an example. Since the size and shape of the backlight panel assembly 231 and the light-transmitting panel assembly 232 in the same group of MiniLED backlight modules are almost the same, the same group of grabbing units 4 can also perform the same operation on the light-transmitting panel assembly 232, especially when the light-transmitting panel assembly 232 also adopts a flexible structure, the same protection effect can also be provided to the light-transmitting panel assembly 232.

[0039] Refer to the instruction manual Figure 2 The assembly operation driving unit 3 includes a support frame 31, which is arranged above the shell conveying unit 1 and the internal structural parts feeding system 2. A Y-axis driver 32 is arranged on the support frame 31, and an X-axis driver 33 is arranged on the output end of the Y-axis driver 32. A Z-axis driver 34 is arranged on the output end of the X-axis driver 33. A grabbing plate 41 is fixedly installed on the output end of the Z-axis driver 34. The Y-axis driver 32 is used to drive the grabbing unit 4 to move along the Y-axis, the X-axis driver 33 is used to drive the grabbing unit 4 to move along the X-axis, and the Z-axis driver 34 is used to drive the grabbing unit 4 to move up and down along the Z-axis.

[0040] For further information, please refer to the attached manual. Figure 1 , Figure 8 and Fig. 9In order to ensure the assembly accuracy, the shell conveying unit 1 is provided with a shell positioning unit 5 at its assembly station. The shell positioning unit 5 includes a mounting frame 51 and a lifting frame 52. The mounting frame 51 is fixedly mounted on the shell conveying unit 1. The lifting frame 52 is vertically arranged on the mounting frame 51 and driven to move vertically by a linear driving structure. Side clamping plates 53 are slidably arranged at both ends of the lifting frame 52. A positioning abutment plate 54 is slidably arranged in the middle of the lifting frame 52. The side clamping plates 53 slide along the length direction of the lifting frame 52. The positioning abutment plate 54 The sliding direction is set perpendicular to the sliding direction of the side clamping plate 53. In actual use, the shell 6 is first transported to the assembly station, and then the lifting frame 52 is driven to descend, and then the side clamping plate 53 is driven to move to clamp the shell 6 on both sides along the Y-axis direction, and then the positioning abutment plate 54 is driven to move to abut and limit one side of the shell 6 along the X-axis direction, thereby realizing the complete positioning of the shell 6. In addition to positioning, the above structure can also perform operations such as position adjustment on the shell 6 after clamping the shell 6, thereby improving the practicality and convenience of the system.

[0041] It should be noted that the above-mentioned Y-axis driver 32, X-axis driver 33, Z-axis driver 34 and the drives for the lifting frame 52, the side clamping plate 53 and the positioning abutment plate 54 all adopt commonly used linear drive solutions, such as cylinders, linear motors and other structures, which will not be explained in detail in this embodiment.

[0042] In the above embodiment, since the air at the bottom of the backlight panel assembly 231 will quickly overflow from its edge during the assembly process, it is easy to cause the edge of the backlight panel assembly 231 to flip up and down and cause severe vibration. Therefore, this embodiment also provides the following technical solutions. For details, refer to the attached manual. Figure 3 and Figure 4 The bottom of the lower extension structure 411 is provided with an edge pressing component 44 at a position corresponding to the edge of the backlight panel assembly 231. The edge pressing component 44 is used to fit with the edge of the backlight panel assembly 231 when the backlight panel assembly 231 is lowered. Figure 6 The edge pressing component 44 can simply adopt a cushion structure 441. In this embodiment, the cushion structure 441 can be a rectangular distributed structure surrounding the backlight panel assembly 231. When the backlight panel assembly 231 moves downward into the shell 6, the bottom of the cushion structure 441 is always in contact with the surface of the backlight panel assembly 231, avoiding vibration of the edge of the backlight panel assembly 231 due to airflow.

[0043] For further information, please refer to the attached manual. Figure 5The edge pressing component 44 can also be a movable structure. Specifically, the edge pressing component 44 also includes an arc-shaped movable frame 442. Two groups of arc-shaped movable frames 442 are provided, and the two groups of arc-shaped movable frames 442 are respectively provided on two opposite sides of the grabbing plate 41. The bottom of the other two groups of opposite sides of the grabbing plate 41 are respectively installed with cushion structures 441. The bottom end of the arc-shaped movable frame 442 is fixedly installed with a flexible pressing strip 443. The interior of the grabbing plate 41 is provided with an arc-shaped guide structure 412. The arc-shaped movable frame 442 slides with the arc-shaped guide structure 412. The grabbing plate 4 1 is also equipped with a movable frame driver 444 for driving the arc movable frame 442 to move, a suction hole 445 is set in the flexible adhesive pressure strip 443, and a flow channel for communicating with the flexible adhesive pressure strip 443 is set in the arc movable frame 442, and the flow channel is connected to the vacuum pumping device through a pipeline, that is, in actual use, the flexible adhesive pressure strip 443 can also form vacuum adsorption, wherein, when the backlight panel assembly 231 is initially grasped, the bottom end of the flexible adhesive pressure strip 443 is flush with the bottom end of the vacuum suction cup 42, that is, when the backlight panel assembly 231 is initially grasped, the backlight panel assembly 231 is 1 is in a straight state as a whole, and after grabbing, the edge pressing component 44 drives the flexible pressing strip 443 to move upward along the arc track, so that the flexible pressing strip 443 is adsorbed on the edge of the backlight panel assembly 231 to generate an upward bend. Since the arc-shaped movable frame 442 moves along the arc track, no slippage along the surface of the backlight panel assembly 231 will occur in this bent portion. During the downward assembly of the backlight panel assembly 231, the two sides are in an upward state, which can increase the gap between the edge of the backlight panel assembly 231 and the housing 6, thereby accelerating the assembly of the backlight panel assembly. The air at the bottom of 231 is quickly discharged. At the same time, since the backlight panel assembly 231 in the upturned state is shortened in the length direction, the backlight panel assembly 231 is easier to enter the shell 6 during assembly, and it is not easy to contact and collide during the assembly process, thereby improving the accuracy of assembly. After the backlight panel assembly 231 is completely installed in the shell 6, the arc-shaped movable frame 442 is driven to move in the opposite direction to restore the backlight panel assembly 231 to a straight state, and the vacuum adsorption of the adsorption hole 445 and the vacuum suction cup 42 is released, so that the grabbing plate 41 can be driven to leave, and subsequent assembly operations can be carried out.

[0044] It should be noted that the movable frame driver 444 can be designed with a corresponding arc motion driving structure separately, or a cylinder structure can be adopted. Specifically, the arc movable frame 442 is connected to the output end of the movable frame driver 444 through a flexible shaft, and then the movement of the arc movable frame 442 can be controlled by controlling the extension and retraction of the cylinder, and a corresponding limiting structure is set in the arc guide structure 412 to improve the accuracy of movement control.

[0045] For further information, please refer to the attached manual. Figure 5After the arc-shaped movable frame 442 drives the edge of the backlight panel assembly 231 to bend upward, a closed space is formed between the upper part of the backlight panel assembly 231 and the inner cavity of the grabbing plate 41 with the supplement of the cushion structure 441. An air filling tube 45 is fixedly installed on the grabbing plate 41. The air filling tube 45 is connected to an air filling device (such as an air pump), and a plurality of distance sensors for detecting the distance between the backlight panel assembly 231 and the grabbing plate 41 are arranged inside the grabbing plate 41. During the lowering process of the backlight panel assembly 231, the deformation of the backlight panel assembly 231 can be detected. When the backlight panel assembly 231 bulges upward, a distance sensor will detect the displacement change. At this time, air can be input into the grabbing plate 41 through the inflation tube 45 to increase the air pressure, offsetting the pressure at the bottom of the backlight panel assembly 231 and further preventing the backlight panel assembly 231 from bulging. In addition, when the assembly is completed, the flexible pressure strip 443 leaves the backlight panel assembly 231, and while the grabbing plate 41 is rising, air can be input into the grabbing plate 41 through the inflation tube 45 to accelerate the separation of the backlight panel assembly 231 and prevent the backlight panel assembly 231 from being carried out.

[0046] For further information, please refer to the attached manual. Figure 5 and Figure 6 The flexible pressure strip 443 is a rubber structure, and the flexible pressure strip 443 is fixedly bonded to the arc-shaped movable frame 442, and the connecting surface between the arc-shaped movable frame 442 and the flexible pressure strip 443 is set as an inclined surface, which is inclined downward on the side close to the central area of ​​the backlight panel assembly 231, and then after the backlight panel assembly 231 is completely installed in the shell 6 and the upturned part of the backlight panel assembly 231 is restored to be flat, the arc-shaped movable frame 442 is controlled to continue to move downward and squeeze the flexible pressure strip 443. Under the influence of the above-mentioned inclined surface, the flexible pressure strip 443 will produce extrusion deformation and generate an outward thrust on the backlight panel assembly 231, thereby forming a slight stretching of the backlight panel assembly 231 to both sides, avoiding incomplete fitting of the bottom of the backlight panel assembly 231 after assembly, and further improving the assembly accuracy.

[0047] Refer to the instruction manual Fig.11 The present invention also provides a method for manufacturing an energy-saving MiniLED backlight module, comprising the following steps: Step 1: The housing 6 is transported to the assembly station by the housing transport unit 1, and the housing 6 is positioned by the housing positioning unit 5, and at the same time, the tray 22 equipped with the backlight panel assembly 231 and the light-transmitting panel assembly 232 is transported to the loading station by the tray transport assembly 21; Step 2: The driving unit 3 drives the grabbing unit 4 to grab the backlight panel assembly 231 from the tray 22 through the assembly operation, and assembles the backlight panel assembly 231 into the housing 6; Step 3: When the cover 43 contacts the outer wall of the housing 6 to form a closed exhaust space 431, the exhaust device is turned on to exhaust air from the exhaust pipe 432; Step 4: After the backlight panel assembly 231 is assembled in place, the exhaust device is turned off, the vacuum suction cup 42 is turned off, and the grabbing unit 4 is driven to leave the housing 6; Step 5: drive the grabbing unit 4 to reach the tray 22 again, suck and grab the light-transmitting plate assembly 232 in the tray 22, and assemble the light-transmitting plate assembly 232 into the housing 6; Step 6: The assembled shell 6 is output to a subsequent processing station through the shell conveying unit 1.

[0048] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A manufacturing system for an energy-saving MiniLED backlight module, comprising a shell conveying unit (1), an internal structural component feeding system (2), an assembly operation drive unit (3) and a gripping unit (4), wherein the shell conveying unit (1) is used to convey the shell (6), and the internal structural component feeding system (2) is used to feed and convey the internal structural component (23), characterized in that: The gripping unit (4) comprises a gripping plate (41), on which a plurality of groups of vacuum suction cups (42) are arranged, and the vacuum suction cups (42) are connected to a vacuum extraction device; A covering cover (43) is arranged on the outside of the grabbing plate (41), and the covering cover (43) is used to fit with the outer wall of the shell (6). A downward extension structure (411) is arranged at the bottom of the grabbing plate (41), and the downward extension structure (411) is arranged corresponding to the inner wall of the shell (6). An exhaust space (431) is formed between the covering cover (43) and the downward extension structure (411). An exhaust pipe (432) connected to the exhaust space (431) is arranged on the grabbing plate (41), and the exhaust pipe (432) is connected to an exhaust device. When the internal structural component (23) enters the shell (6), the exhaust space (431) is connected to the lower space of the internal structural component (23) through a gap between the internal structural component (23) and the shell (6).

2. The manufacturing system of an energy-saving MiniLED backlight module according to claim 1, characterized in that: An edge pressing component (44) is provided at a position at the bottom of the downward extension structure (411) corresponding to the edge of the backlight panel component (231); the edge pressing component (44) is used to fit with the edge of the internal structural component (23); the edge pressing component (44) comprises a cushion structure (441).

3. The manufacturing system of an energy-saving MiniLED backlight module according to claim 2, characterized in that: The internal structural component loading system (2) comprises a tray conveying assembly (21) and a tray (22), wherein the tray conveying assembly (21) is used to convey the tray (22), and the internal structural component (23) comprises a backlight panel assembly (231) and a light-transmitting panel assembly (232), wherein the backlight panel assembly (231) and the light-transmitting panel assembly (232) are placed in the tray (22).

4. The manufacturing system of an energy-saving MiniLED backlight module according to claim 3, characterized in that: The edge pressing assembly (44) further comprises an arc-shaped movable frame (442), wherein two groups of the arc-shaped movable frames (442) are provided, and the two groups of the arc-shaped movable frames (442) are respectively provided on two opposite sides of the grabbing plate (41), and the bottoms of the other two groups of opposite sides of the grabbing plate (41) are respectively provided with a cushion structure (441), and a flexible pressing strip (443) is fixedly installed at the bottom end of the arc-shaped movable frame (442), and an arc-shaped guiding structure (412) is provided inside the grabbing plate (41), and the arc-shaped movable frame (442) and the arc-shaped guiding structure (412) are slidably matched, and a movable frame driver (444) for driving the arc-shaped movable frame (442) to move is also installed in the grabbing plate (41), and an adsorption hole (445) is provided in the flexible pressing strip (443), and the adsorption hole (445) is connected to a vacuum pumping device.

5. The manufacturing system of an energy-saving MiniLED backlight module according to claim 4, characterized in that: The movable frame driver (444) is a cylinder structure, and the arc-shaped movable frame (442) is connected to the output end of the movable frame driver (444) via a flexible shaft.

6. The manufacturing system of an energy-saving MiniLED backlight module according to claim 5, characterized in that: After the arc-shaped movable frame (442) drives the edge of the backlight panel assembly (231) to bend upward, a closed space is formed between the upper part of the backlight panel assembly (231) and the inner cavity of the grabbing plate (41); an inflation tube (45) is fixedly mounted on the grabbing plate (41); the inflation tube (45) is connected to an inflation device; and a plurality of distance sensors for detecting the distance between the backlight panel assembly (231) and the grabbing plate (41) are arranged inside the grabbing plate (41).

7. The manufacturing system of an energy-saving MiniLED backlight module according to claim 6, characterized in that: The flexible pressure strip (443) is of a rubber structure, and the flexible pressure strip (443) is fixedly bonded to the arc-shaped movable frame (442), and the connecting surface between the arc-shaped movable frame (442) and the flexible pressure strip (443) is arranged as an inclined surface, and the inclined surface is inclined downward on a side close to the central area of ​​the backlight panel assembly (231).

8. The manufacturing system of an energy-saving MiniLED backlight module according to claim 7, characterized in that: The assembly operation drive unit (3) comprises a support frame (31), the support frame (31) being arranged above the shell conveying unit (1) and the internal structural component feeding system (2), the support frame (31) being provided with a Y-axis driver (32), the output end of the Y-axis driver (32) being provided with an X-axis driver (33), the output end of the X-axis driver (33) being provided with a Z-axis driver (34), the grabbing plate (41) being fixedly mounted on the output end of the Z-axis driver (34), the Y-axis driver (32) being used to drive the grabbing unit (4) to move along the Y-axis, the X-axis driver (33) being used to drive the grabbing unit (4) to move along the X-axis, and the Z-axis driver (34) being used to drive the grabbing unit (4) to move up and down along the Z-axis.

9. The manufacturing system of an energy-saving MiniLED backlight module according to claim 8, characterized in that: The shell conveying unit (1) is provided with a shell positioning unit (5) corresponding to its assembly station. The shell positioning unit (5) comprises a mounting frame (51) and a lifting frame (52). The mounting frame (51) is fixedly mounted on the shell conveying unit (1). The lifting frame (52) is vertically arranged on the mounting frame (51). Side clamping plates (53) are slidably arranged at both ends of the lifting frame (52). A positioning abutment plate (54) is slidably arranged in the middle of the lifting frame (52). The side clamping plate (53) slides along the length direction of the lifting frame (52). The sliding direction of the positioning abutment plate (54) is arranged perpendicular to the sliding direction of the side clamping plate (53).

10. A method for manufacturing an energy-saving MiniLED backlight module manufacturing system according to claim 9, characterized in that: The following steps are involved: Step 1: The shell (6) is transported to the assembly station by the shell transport unit (1), and the shell (6) is positioned by the shell positioning unit (5), and at the same time, the tray (22) equipped with the backlight panel assembly (231) and the light-transmitting panel assembly (232) is transported to the loading station by the tray transport assembly (21); Step 2: driving the grabbing unit (4) to grab the backlight panel assembly (231) from the tray (22) through the assembly operation driving unit (3), and assembling the backlight panel assembly (231) into the housing (6); Step 3: When the cover (43) contacts the outer wall of the shell (6) to form a closed exhaust space (431), the exhaust device is turned on to exhaust air through the exhaust pipe (432); Step 4: After the backlight panel assembly (231) is assembled in place, the exhaust device is turned off, the vacuum suction cup (42) is turned off, and the grabbing unit (4) is driven to leave the housing (6); Step 5: driving the grabbing unit (4) to reach the tray (22) again, sucking and grabbing the light-transmitting plate assembly (232) in the tray (22), and assembling the light-transmitting plate assembly (232) into the housing (6); Step six: The assembled shell (6) is output to a subsequent processing station through the shell conveying unit (1).

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