High-precision cover glass machine for liquid crystal screen production

Abstract

The utility model relates to a high-precision cover glass machine for liquid crystal screen production. The high-precision cover glass machine comprises a machine table, and a rotary table unit, a shell feeding unit, a shell detection unit, a cover glass taking unit, a glass detection unit and a cover glass discharging unit which are respectively arranged on the machine table, the shell feeding unit, the cover glass taking unit and the cover glass discharging unit are arranged around the rotating disc unit. The shell detection unit identifies the positions of four corners of the shell on the cover glass station from top to bottom; the glass detection unit identifies the positions of four corners of glass from bottom to top; the cover glass taking unit is used for adjusting the angle and position of glass according to position information detected by the shell detection unit and the glass detection unit and installing the glass in a shell of a cover glass station. The shell feeding unit, the cover glass taking unit and the cover glass discharging unit are linked through the intermittently-driven rotating disc unit, synchronous circulation of shells and glass is achieved, meanwhile, space coordinate matching is formed through the shell detection unit and the glass detection unit, and the installation precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of LCD screen production technology, and specifically to a high-precision cover glass machine for LCD screen production. Background Technology

[0002] In the manufacturing process of liquid crystal display modules (LCMs), the assembly of the backlight unit (BLU) is one of the key steps. This involves sequentially installing components such as reflectors, light guide plates, and optical films inside the LCD screen's casing, and finally precisely covering the module surface with a glass substrate to form the optical display interface.

[0003] Currently, the installation of this glass substrate is generally done manually, by manually aligning the glass substrate with the outer casing slot for positioning and installation. This is not only time-consuming and labor-intensive, but also has low work efficiency and unstable installation accuracy, which is highly dependent on the operator's experience. In addition, human contact can easily leave fingerprints, sweat stains or dust on the glass surface, reducing optical transmittance and posing a high risk of surface contamination. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-precision cover glass machine for LCD screen production.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a high-precision cover glass machine for LCD screen production, comprising a machine base, a turntable unit, a shell feeding unit, a shell detection unit, a cover glass picking unit, a glass detection unit, and a cover glass unloading unit respectively arranged on the machine base;

[0006] The turntable unit includes a horizontally placed turntable and an intermittent mechanism for driving the turntable to move intermittently; the turntable is respectively provided with a loading station, a cover glass station and a unloading station that are evenly placed in the circumferential direction, and each station is provided with a suction cup assembly for fixing the outer shell.

[0007] The outer shell loading unit includes a loading conveyor line for conveying outer shells, a positioning mechanism set on the magnetic wheel conveyor line for online positioning of the outer shells, a lifting mechanism set on the magnetic wheel conveyor line for lifting the positioned outer shells, and an outer shell loading robot for placing the positioned outer shells on the loading station.

[0008] The outer shell detection unit is located directly above the cover glass station and is used to identify the positions of the four corners of the outer shell at the cover glass station from top to bottom;

[0009] The material-grabbing and glass-covering unit is used to grab glass and send it to the glass inspection unit for inspection, and adjust the angle and position of the glass according to the inspection position information, and finally install it into the outer shell of the glass-covering station.

[0010] The glass detection unit is located inside the machine table and is used to identify the positions of the four corners of the glass from bottom to top;

[0011] The cover glass feeding unit includes a cover glass feeding conveyor line and a cover glass feeding manipulator; the cover glass feeding manipulator is used to pick up the housing with the glass installed from the feeding station and place it on the cover glass feeding conveyor line.

[0012] Preferably, the feeding conveyor line adopts a magnetic wheel conveyor line, with an avoidance part arranged in the middle, and a gap is arranged between adjacent rollers;

[0013] The positioning mechanism includes end positioning components respectively located at both ends of the magnetic wheel conveyor line and side positioning components respectively located on both sides of the magnetic wheel conveyor line;

[0014] The end positioning component includes an end positioning cylinder horizontally arranged at the end of the avoidance part and with a movement direction perpendicular to the roller, an end lifting cylinder vertically arranged at the driving end of the end positioning cylinder, an end mounting frame arranged at the driving end of the end lifting cylinder, and two end positioning columns vertically arranged on the end mounting frame and spaced along the axis direction of the roller; the initial position of the end positioning column is lower than the roller conveying surface;

[0015] The side positioning component includes a side positioning cylinder horizontally arranged below the roller and with a movement direction parallel to the roller, a side mounting frame arranged at the driving end of the side positioning cylinder and perpendicular to the roller, and multiple side positioning columns vertically arranged on the side mounting frame and located between adjacent rollers; the side positioning column is always higher than the roller conveying surface.

[0016] Preferably, the lifting mechanism includes a feeding lifting plate horizontally arranged in the avoidance part and in a cross shape, and a feeding lifting cylinder arranged inside the magnetic wheel conveyor line for driving the feeding lifting plate to lift; the initial position of the feeding lifting plate is not higher than the roller conveying surface.

[0017] Preferably, the housing detection unit includes a housing detection gantry, a square-top roof horizontally arranged on the top of the housing detection gantry, a hollow part arranged on the square-top roof, a housing detection X-axis linear module and a housing detection guide rail assembly horizontally arranged on the square-top roof and respectively located on both sides of the hollow part, and two housing detection Y-axis linear modules with one end slidably arranged on the housing detection guide rail assembly and placed in parallel;

[0018] Both the housing detection X-axis linear module and the housing detection Y-axis linear module are double-slide linear modules, wherein two slides are symmetrically arranged on the linear module and move closer to or away from each other simultaneously under the drive of the linear module;

[0019] The other ends of the two Y-axis linear modules for shell detection are respectively located on the two slides of the two X-axis linear modules for shell detection; a visual recognition module is provided on each slide of the Y-axis linear module for shell detection.

[0020] Preferably, the material-retrieving cover glass unit includes a material-retrieving cover glass bracket, a material-retrieving cover glass X-axis linear module horizontally arranged on the material-retrieving cover glass, a material-retrieving cover glass Y-axis linear module arranged at the drive end of the material-retrieving cover glass X-axis linear module and placed perpendicular to the material-retrieving cover glass X-axis linear module, a material-retrieving cover glass Z-axis linear module vertically arranged at the drive end of the material-retrieving cover glass Y-axis linear module and placed perpendicular to the material-retrieving cover glass Y-axis linear module, an angle adjustment motor vertically arranged at the drive end of the material-retrieving cover glass Z-axis linear module, and a material-retrieving cover glass suction cup horizontally arranged at the drive end of the angle adjustment motor.

[0021] Preferably, the cover glass unloading conveyor line is an equidistant conveyor line;

[0022] Preferably, it also includes a backlight module cleaning unit;

[0023] A cleaning station is also provided on the turntable between the material loading station and the glass covering station;

[0024] The backlight module cleaning unit includes a cleaning bracket, a support mechanism mounted on the cleaning bracket and located below the cleaning station, and a cleaning mechanism mounted on the cleaning bracket and located above the cleaning station.

[0025] The cleaning mechanism includes a horizontally placed cleaning linear module, a slide table disposed at the drive end of the cleaning linear module, a floating frame vertically slidably disposed on the slide table, a grooved cam with a planar structure and placed parallel to the cleaning linear module, a track groove disposed on the grooved cam with a low center and high ends, a roller disposed on the floating frame and located in the track groove, a cleaning frame disposed at the bottom of the floating frame and placed perpendicular to the cleaning linear module, and a dust-adhesive roller rotatably disposed on the cleaning frame for cleaning the surface of the backlight module; an elastic component is disposed between the floating frame and the cleaning frame.

[0026] The support mechanism has a lifting function and is used to support the bottom of the cleaning station or both ends of the outer shell on the cleaning station.

[0027] Preferably, it also includes a backlight module detection unit and a defective product unloading unit;

[0028] The backlight module detection unit is located on one side of the cleaning station and is used to perform power-on detection on the cleaned backlight module. It includes a backlight module detection robot, a power-on mechanism, a vision positioning module, and a vision detection module respectively set on the drive end of the backlight module detection robot. The vision positioning module is used to identify the power-on position of the backlight module inside the shell on the cleaning station. The power-on mechanism is used to power on the backlight module inside the shell on the cleaning station. The vision detection module is located directly above the cleaning station and is used to inspect the powered backlight module.

[0029] A defective product unloading station is also set up on the turntable between the cleaning station and the cover glass station;

[0030] The defective product unloading unit is located on one side of the defective product unloading station and includes a defective product unloading conveyor line and a defective product unloading robot. The defective product unloading robot is used to place the shell with the defective product backlight module installed from the defective product unloading station onto the defective product unloading conveyor line for outflow.

[0031] Preferably, the shell loading robot, the defective product unloading robot, and the cover glass unloading robot have the same structure, all including a robotic arm and a gripper assembly with a robotic arm drive end;

[0032] The gripper assembly includes a connecting seat, gripper cylinders respectively disposed at both ends of the connecting seat with their driving ends symmetrically facing outward, L-shaped grippers disposed at the driving ends of the gripper cylinders, and multiple suction cups vertically disposed at the bottom of the connecting seat.

[0033] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0034] 1. This invention adopts multi-station collaborative operation, that is, the shell loading unit, the cover glass picking unit and the cover glass unloading unit are linked by the intermittently driven turntable unit to realize the synchronous flow of the shell and the glass;

[0035] 2. This invention adopts a two-level positioning method, namely, the outer shell detection unit (identifying the four corners of the outer shell from top to bottom) and the glass detection unit (identifying the four corners of the glass from bottom to top) form a spatial coordinate matching to ensure that the installation accuracy is ≤ ±0.1mm;

[0036] 3. This invention achieves full-process automation, integrating material loading, inspection, glass covering, and unloading operations, completely replacing manual operation and solving the problems of pollution, positioning deviation, and low efficiency in the glass installation process. Attached Figure Description

[0037] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0038] Appendix Figure 1 This is a top view of the high-precision cover glass machine for producing LCD screens according to the present invention;

[0039] Appendix Figure 2 This is a top view of the feeding conveyor line in this utility model;

[0040] Appendix Figure 3 This is a perspective view of the feeding conveyor line in this utility model;

[0041] Appendix Figure 4 This is a schematic diagram of the structure of the mid-end positioning component of this utility model;

[0042] Appendix Figure 5 This is a schematic diagram of the side positioning component in this utility model;

[0043] Appendix Figure 6 This is a schematic diagram of the gripper assembly in this utility model;

[0044] Appendix Figure 7 This is a schematic diagram of the outer shell detection unit in this utility model;

[0045] Appendix Figure 8 This is a schematic diagram of the material-feeding cover glass unit in this utility model;

[0046] Appendix Figure 9 This is a schematic diagram of the backlight module cleaning unit and turntable in this utility model;

[0047] Appendix Figure 10 This is a schematic diagram of the cleaning mechanism in this utility model;

[0048] Appendix Figure 11 This is a schematic diagram of the backlight module detection unit in this utility model.

[0049] Among them: 1. Machines;

[0050] 2. Turntable unit; 2A. Loading station; 2B. Cleaning station; 2C. Defective product unloading station; 2D. Cover glass station; 2E. Unloading station;

[0051] 3. Shell feeding unit; 31. Feeding conveyor line; 311. Clearance part; 312. Roller; 32. Shell feeding robot; 321. Connecting seat; 322. Gripper cylinder; 323. L-shaped gripper; 324. Suction cup; 33. End positioning assembly; 331. End positioning cylinder; 332. End lifting cylinder; 333. End mounting bracket; 334. End positioning post; 34. Side positioning assembly; 341. Side positioning cylinder; 342. Side mounting bracket; 343. Side positioning post; 35. Lifting mechanism; 351. Feeding lifting plate; 352. Feeding lifting cylinder;

[0052] 4. Shell inspection unit; 41. Shell inspection gantry; 42. U-shaped top plate; 43. Hollowed-out section; 44. Shell inspection X-axis linear module; 45. Shell inspection guide rail assembly; 46. Shell inspection Y-axis linear module; 47. Vision recognition module;

[0053] 5. Material Picking Cover Glass Unit; 51. Material Picking Cover Glass Support; 52. Material Picking Cover Glass X-Axis Linear Module; 53. Material Picking Cover Glass Y-Axis Linear Module; 54. Material Picking Cover Glass Z-Axis Linear Module; 55. Angle Adjustment Motor; 56. Material Picking Cover Glass Suction Cup;

[0054] 6. Glass inspection unit;

[0055] 7. Cover glass cutting unit;

[0056] 8. Backlight module cleaning unit; 81. Cleaning bracket; 82. Support mechanism; 821. Support plate; 822. Support cylinder; 83. Cleaning mechanism; 831. Cleaning linear module; 832. Slide table; 833. Floating frame; 834. Groove cam; 835. Track groove; 836. Cleaning rack; 837. Adhesive roller; 838. Elastic component;

[0057] 9. Backlight module detection unit; 91. Backlight module detection robot; 92. Power supply mechanism; 93. Visual positioning module;

[0058] 10. Defective product unloading unit; 101. Defective product unloading conveyor line; 102. Defective product unloading robot. Detailed Implementation

[0059] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0060] Appendix Figure 1-11 The high-precision cover glass machine for producing LCD screens according to this utility model includes a machine base 1, a turntable unit 2, a shell feeding unit 3, a shell detection unit 4, a cover glass picking unit 5, a glass detection unit 6, and a cover glass unloading unit 7, all respectively arranged on the machine base 1.

[0061] The turntable unit 2 includes a horizontally placed turntable and an intermittent mechanism for driving the turntable to move intermittently; the turntable is provided with a loading station 2A, a cover glass station 2D and a unloading station 2E that are evenly placed in the circumferential direction, and each station is provided with a suction cup assembly for fixing the outer shell.

[0062] The outer shell loading unit 3 includes a loading conveyor line 31 for conveying the outer shell, a positioning mechanism set on the magnetic wheel conveyor line for online positioning of the outer shell, a lifting mechanism 35 set on the magnetic wheel conveyor line for lifting the positioned outer shell, and an outer shell loading robot 32 for placing the positioned outer shell on the loading station 2A.

[0063] The outer shell detection unit 4 is located directly above the cover glass station 2D and is used to identify the positions of the four corners of the outer shell on the cover glass station 2D from top to bottom;

[0064] The material-grabbing cover glass unit 5 is used to grab glass and send it to the glass inspection unit 6 for inspection, and adjust the angle and position of the glass according to the inspection position information, and finally install it into the outer shell of the cover glass station 2D;

[0065] The glass detection unit 6 is located inside the machine base 1 and is used to identify the positions of the four corners of the glass from bottom to top.

[0066] The cover glass unloading unit 7 includes a cover glass unloading conveyor line and a cover glass unloading robot; the cover glass unloading robot is used to pick up the glass-installed shell from the unloading station 2E and place it on the cover glass unloading conveyor line;

[0067] During operation: The production line of the previous process conveys the shell with the backlight module installed to the feeding conveyor line 31; when the feeding conveyor line 31 conveys the shell to the shell feeding robot 32 picking position, the positioning mechanism positions the shell online, and the lifting mechanism 35 lifts the positioned shell from the feeding conveyor line 31. Then the shell feeding robot 32 picks up the lifted shell and places it on the feeding station 2A of the turntable. Then the suction cup assembly fixes the shell to prevent the shell from shifting during the rotation of the turntable. Then the intermittent mechanism drives the turntable to rotate intermittently until the turntable moves the shell from the feeding station to the cover glass station 2D. Then the shell detection unit 4 identifies the position of the four corners of the shell on the cover glass station 2D from top to bottom.

[0068] During this process, the material picking and cover glass unit 5 picks up glass from the automatic glass feeding equipment and sends it to the glass detection unit 6 for inspection. At this time, the material picking and cover glass unit 5 will adjust the angle and position of the glass according to the position information of the four corners of the outer shell collected by the outer shell detection unit 4 and the position information of the four corners of the glass collected by the glass detection unit 6, so as to accurately install the glass into the outer shell of the cover glass station 2D.

[0069] Finally, the intermittent mechanism drives the turntable to rotate intermittently until the turntable moves the glass-mounted shell from the cover glass station 2D to the unloading station 2E. At this time, the suction cup assembly releases the shell, and the cover glass unloading robot takes the glass-mounted shell from the unloading station 2E and places it on the next production line of the cover glass unloading conveyor.

[0070] Furthermore, such as Figure 2-3 As shown, the feeding conveyor line 31 adopts a magnetic wheel conveyor line, which uses magnetic wheel drive. The active magnetic wheel and the driven magnetic wheel do not contact each other and are driven by the magnetism of the magnetic wheel. It can meet the requirements of dust-free, low noise and anti-static level, and is suitable for cleanrooms with relatively high conveying requirements.

[0071] Furthermore, such as Figure 2-5 As shown, the positioning mechanism includes end positioning components 33 located at both ends of the magnetic wheel conveyor line and side positioning components 34 located on both sides of the magnetic wheel conveyor line.

[0072] The magnetic wheel conveyor line is provided with a clearance part 311 in the middle, such as a small magnetic wheel conveyor line disclosed in prior art 202020670476.7, which facilitates the installation of the end positioning component 33;

[0073] A gap is provided between adjacent rollers 312 of the magnetic wheel conveyor line, such as the magnetic wheel driven conveyor line disclosed in the prior art patent CN202223389042.8, which facilitates the installation of the side positioning component 34.

[0074] The end positioning assembly 33 includes an end positioning cylinder 331 horizontally disposed at the end of the clearance part 311 and with its movement direction perpendicular to the roller 312, an end lifting cylinder 332 vertically disposed at the driving end of the end positioning cylinder 331, an end mounting bracket 333 disposed at the driving end of the end lifting cylinder 332, and two end positioning posts 334 vertically disposed on the end mounting bracket 333 and spaced apart along the axis of the roller 312; the initial position of the end positioning posts 334 is lower than the conveying surface of the roller 312.

[0075] The side positioning assembly 34 includes a side positioning cylinder 341 horizontally disposed below the roller 312 and moving in a direction parallel to the roller 312, a side mounting bracket 342 disposed at the drive end of the side positioning cylinder 341 and placed perpendicular to the roller 312, and multiple side positioning columns 343 vertically disposed on the side mounting bracket 342 and located between adjacent rollers 312; the side positioning columns 343 are always higher than the conveying surface of the roller 312.

[0076] When the feeding conveyor line 31 transports the outer shell to the material picking position of the outer shell feeding robot 32, the side positioning components 34 on both sides of the magnetic wheel conveyor line act simultaneously. The side positioning cylinder 341 drives the side mounting bracket 342 to move the side positioning column 343 towards the center, thereby achieving positioning in the width direction of the glass. At the same time, the end positioning components 33 at both ends of the magnetic wheel conveyor line also act simultaneously. First, the end lifting cylinder 332 drives the end positioning column 334 above the roller 312, and then the end positioning cylinder 331 drives the end positioning cylinder 331 to move towards the center, thereby achieving positioning in the length direction of the glass.

[0077] Furthermore, such as Figure 2-3As shown, the lifting mechanism 35 includes a feeding lifting plate 351 horizontally arranged in the避让部311 and in a cross shape, and a feeding lifting cylinder 352 arranged in the magnetic wheel conveyor line for driving the feeding lifting plate 351 to lift and lower; the initial position of the feeding lifting plate 351 is not higher than the conveying surface of the roller 312;

[0078] After the positioning mechanism completes the positioning of the outer shell online, the feeding lifting cylinder 352 drives the feeding lifting plate 351 to lift the outer shell from the magnetic wheel conveyor line, facilitating the feeding manipulator to pick up the outer shell.

[0079] Furthermore, the intermittent mechanism is prior art, such as a cam divider, so its structure will not be introduced in detail.

[0080] Furthermore, as Figure 7 As shown, the outer shell detection unit 4 includes an outer shell detection gantry 41, a square-top roof 42 horizontally arranged on the top of the outer shell detection gantry 41, a hollow part 43 arranged on the square-top roof 42, an outer shell detection X-axis linear module 44 and an outer shell detection guide rail assembly 35 arranged in parallel on the square-top roof 42 and located on both sides of the hollow part 43 respectively, and two outer shell detection Y-axis linear modules 46 with one end slidably arranged on the outer shell detection guide rail assembly 35 and placed in parallel;

[0081] Both the outer shell detection X-axis linear module 44 and the outer shell detection Y-axis linear module 46 are double-slide linear modules, where two slides are symmetrically arranged on the linear module and move closer to or away from each other simultaneously under the drive of the linear module;

[0082] The other ends of the two outer shell detection Y-axis linear modules 46 are respectively located on the two slides of the two outer shell detection X-axis linear modules 44; visual recognition modules 47 are arranged on the two slides of the outer shell detection Y-axis linear module 46;

[0083] During operation: The positions of the four corners of the outer shell on the cover glass station 2D are respectively recognized from top to bottom by the four visual recognition modules 47; when testing outer shells of different sizes, the distance between the visual recognition modules 47 can be coordinated and adjusted by one outer shell detection X-axis linear module 44 and two outer shell detection Y-axis linear modules 46, which can meet the diverse scenario requirements and adapt to products of different sizes.

[0084] Furthermore, as Figure 8As shown, the material-retrieving cover glass unit 5 includes a material-retrieving cover glass bracket 51, a material-retrieving cover glass X-axis linear module 52 horizontally arranged on the material-retrieving cover glass, a material-retrieving cover glass Y-axis linear module 53 arranged at the drive end of the material-retrieving cover glass X-axis linear module 52 and placed perpendicular to the material-retrieving cover glass X-axis linear module 52, a material-retrieving cover glass Z-axis linear module 54 vertically arranged at the drive end of the material-retrieving cover glass Y-axis linear module 53 and placed perpendicular to the material-retrieving cover glass Y-axis linear module 53, an angle adjustment motor 55 vertically arranged at the drive end of the material-retrieving cover glass Z-axis linear module 54, and a material-retrieving cover glass suction cup 56 horizontally arranged at the drive end of the angle adjustment motor 55.

[0085] During operation: With the joint cooperation of the X-axis linear module 52, Y-axis linear module 53, and Z-axis linear module 54, the glass is picked up from the automatic glass feeding equipment and moved horizontally towards the glass detection unit 6. When the glass reaches directly above the glass detection unit 6, the glass detection unit 6 identifies the positions of the four corners of the glass from bottom to top. At this time, the glass picking and covering unit 5 will adjust the angle and position of the glass according to the position information of the four corners of the outer shell collected by the outer shell detection unit 4 and the position information of the four corners of the glass collected by the glass detection unit 6, so as to accurately install the glass into the outer shell of the covering station 2D. The angle of the glass is adjusted by the angle adjustment motor 55.

[0086] Furthermore, the glass detection unit 6 is symmetrical to the shell detection unit 4. The four visual recognition modules 47 identify the positions of the four corners of the glass from bottom to top. Unlike the shell detection unit 4, the visual recognition modules 47 of the glass detection unit 9 must be equipped with a light source.

[0087] Furthermore, such as Figure 1 As shown, it also includes a backlight module cleaning unit 8, which is used to clean the surface of the backlight module inside the housing to ensure the quality of the product after the glass is covered.

[0088] like Figure 9 As shown, a cleaning station 2B is also provided on the turntable between the loading station 2A and the cover glass station 2D;

[0089] The backlight module cleaning unit 8 includes a cleaning bracket 81, a support mechanism 82 disposed on the cleaning bracket 81 and located below the cleaning station 2B, and a cleaning mechanism 83 disposed on the cleaning bracket 81 and located above the cleaning station 2B.

[0090] After the turntable moves the outer casing from the loading station 2A to the cleaning station 2B, the support mechanism 82 first supports the bottom of the cleaning station 2B or both ends of the outer casing on the cleaning station 2B to prevent the cleaning mechanism 83 from pressing down and causing the turntable to tilt during the cleaning process; after the cleaning mechanism 83 completes the cleaning, the turntable moves the outer casing from the cleaning station 2B to the cover glass station 2D.

[0091] Furthermore, such as Figure 10 As shown, the cleaning mechanism 83 includes a horizontally placed cleaning linear module 831, a slide table 832 disposed at the drive end of the cleaning linear module 831, a floating frame 833 vertically slidably disposed on the slide table 832, a grooved cam 834 with a planar structure and placed parallel to the cleaning linear module 831, a track groove 835 disposed on the grooved cam 834 with a low middle and high ends, a roller disposed on the floating frame 833 and located in the track groove 835, a cleaning frame 836 disposed at the bottom of the floating frame 833 and placed vertically to the cleaning linear module 831, and a dust-adhesive roller 837 rotatably disposed on the cleaning frame 836 for cleaning the surface of the backlight module.

[0092] During operation: The cleaning linear module 831 drives the slide 832 to move the floating frame 833 horizontally. Since the rollers on the floating frame 833 are set in the track groove 835 of the slotted cam 834, and the track groove 835 is low in the middle and high at both ends, the floating frame 833 will drive the cleaning frame 836 to descend during the initial horizontal movement until the sticky roller 837 contacts one end of the backlight module inside the housing. At this time, since the middle of the track groove 835 is a straight section, the cleaning frame 836 moves horizontally and cleans the dust and other particles on the surface of the backlight module through the sticky roller 837. When the sticky roller 837 moves to the other end of the backlight module inside the housing, since the track groove 835 is in the inclined section, it drives the cleaning frame 836 to rise to complete the cleaning.

[0093] This invention uses a linear module drive + slotted cam 834 to enable the floating frame 833 to rise and fall during translation. This not only eliminates the need for the Z-axis linear module, saving costs, but also results in a simple structure and high precision.

[0094] Furthermore, such as Figure 10 As shown, an elastic component 838 is provided between the floating frame 833 and the cleaning frame 836, which not only plays a buffering role, but also ensures that the dust roller 837 is in close contact with the surface of the backlight module, effectively removing dust and other particles from the surface of the backlight module.

[0095] In this embodiment, two support mechanisms 82 are provided to support the two ends of the outer shell on the cleaning station 2B. The support mechanism includes a horizontally placed support plate 821, a support cylinder 822 that drives the support plate 821 to rise and fall, and a guide component that guides the support plate 821 during the rising and falling process.

[0096] Furthermore, such as Figure 1 As shown, it also includes a backlight module detection unit 9 and a defective product unloading unit 10;

[0097] The backlight module detection unit 9 is located on one side of the cleaning station 2B and is used to perform power-on testing on the cleaned backlight module, such as... Figure 11 As shown, the device includes a backlight module inspection robot 91, a power supply mechanism 92, a vision positioning module 93, and a vision inspection module, all disposed at the drive end of the backlight module inspection robot 91. The vision positioning module 93 is used to identify the power supply position of the backlight module inside the outer shell on the cleaning station 2B. The power supply mechanism 92 is used to power on the backlight module inside the outer shell on the cleaning station 2B. The vision inspection module is located directly above the cleaning station 2B and is used to inspect the powered backlight module.

[0098] A defective product unloading station 2C is also provided on the turntable between the cleaning station 2B and the cover glass station 2D.

[0099] The defective product unloading unit 10 is located on one side of the defective product unloading station 2C, and includes a defective product unloading conveyor line 101 and a defective product unloading robot 102. When the backlight module detection unit 9 detects defects such as black spots on the backlight module, the defective product unloading robot 102 places the shell containing the defective backlight module from the defective product unloading station 2C onto the defective product unloading conveyor line 101 to ensure product quality.

[0100] Furthermore, the shell loading robot 32, the defective product unloading robot 102, and the cover glass unloading robot have the same structure, all including a robotic arm and a gripper assembly with a drive end for the robotic arm; during operation, the robotic arm drives the gripper assembly to grab the shell for transfer, thereby achieving automated operation.

[0101] Furthermore, such as Figure 6 As shown, the gripper assembly includes a connecting seat 321, gripper cylinders 322 respectively disposed at both ends of the connecting seat 321 with their driving ends symmetrically facing outward, L-shaped grippers 323 disposed at the driving end of the gripper cylinders 322, and four suction cups 324 vertically disposed at the bottom of the connecting seat 321 and arranged in a matrix.

[0102] During operation: First, the upper surface of the outer shell is gripped by four suction cups 324, and then two L-shaped grippers 323 are driven by two gripper cylinders 322 to support the two ends of the outer shell. This application adopts the method of suction cups 324 in combination with grippers, which not only avoids the risk of the outer shell falling during transportation due to air leakage from a single suction cup 324, but also avoids the risk of the outer shell being damaged by excessive clamping force from a single gripper.

[0103] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A high-precision cover glass machine for LCD screen production, characterized in that: It includes a machine platform, a turntable unit, a housing feeding unit, a housing detection unit, a glass picking and covering unit, a glass detection unit, and a cover glass discharging unit, which are respectively arranged on the machine platform; The turntable unit includes a horizontally placed turntable and an intermittent mechanism for driving the turntable to move intermittently; on the turntable, there are respectively arranged a feeding station, a cover glass station, and a discharging station that are evenly placed in the circumferential direction, and on each station, there is a suction cup assembly for fixing the housing; The housing feeding unit includes a feeding conveyor line for conveying the housing, a positioning mechanism arranged on the magnetic wheel conveyor line for on-line positioning of the housing, a lifting mechanism arranged on the magnetic wheel conveyor line for lifting the positioned housing, and a housing feeding manipulator for placing the positioned housing on the feeding station; The housing detection unit is located directly above the cover glass station and is used to identify the positions of the four corners of the housing on the cover glass station from top to bottom; The glass picking and covering unit is used to grab the glass and send it to the glass detection unit for detection, and adjust the angle and position of the glass according to the detected position information, and finally install it into the housing on the cover glass station; The glass detection unit is located inside the machine platform and is used to identify the positions of the four corners of the glass from bottom to top; The cover glass discharging unit includes a cover glass discharging conveyor line and a cover glass discharging manipulator; the cover glass discharging manipulator is used to pick up the housing with the glass installed from the discharging station and place it on the cover glass discharging conveyor line.

2. The high-precision cover glass machine for LCD screen production according to claim 1, characterized in that: The feeding conveyor line adopts a magnetic wheel conveyor line, with an avoidance part arranged in the middle, and there is a gap between adjacent rollers; The positioning mechanism includes end positioning components respectively located at both ends of the magnetic wheel conveyor line and side positioning components respectively located on both sides of the magnetic wheel conveyor line; The end positioning component includes an end positioning cylinder horizontally arranged at the end of the avoidance part and with a movement direction perpendicular to the roller, an end lifting cylinder vertically arranged at the driving end of the end positioning cylinder, an end mounting frame arranged at the driving end of the end lifting cylinder, and two end positioning columns vertically arranged on the end mounting frame and spaced along the axis direction of the roller; the initial position of the end positioning column is lower than the roller conveying surface; The side positioning component includes a side positioning cylinder horizontally arranged below the roller and with a movement direction parallel to the roller, a side mounting frame arranged at the driving end of the side positioning cylinder and perpendicular to the roller, and multiple side positioning columns vertically arranged on the side mounting frame and located between adjacent rollers; the side positioning column is always higher than the roller conveying surface.

3. The high-precision cover glass machine for LCD screen production according to claim 2, characterized in that: The lifting mechanism includes a feeding lifting plate horizontally arranged in the avoidance part and in a shape of a Chinese character 'feng', and a feeding lifting cylinder arranged inside the magnetic wheel conveyor line for driving the feeding lifting plate to lift and lower; the initial position of the feeding lifting plate is not higher than the roller conveying surface.

4. The high-precision cover glass machine for LCD screen production according to claim 1, characterized in that: The housing detection unit includes a housing detection gantry, a square-shaped top plate horizontally arranged on the top of the housing detection gantry, a hollow part arranged on the square-shaped top plate, a housing detection X-axis linear module and a housing detection guide rail assembly arranged in parallel on the square-shaped top plate and respectively located on both sides of the hollow part, and two housing detection Y-axis linear modules with one end slidably arranged on the housing detection guide rail assembly and placed in parallel; The X-axis linear module and Y-axis linear module for shell detection are both dual-slide linear modules, with the two slides symmetrically arranged on the linear module and moving closer or further away simultaneously under the drive of the linear module. The other ends of the two Y-axis linear modules for shell detection are respectively located on the two slides of the two X-axis linear modules for shell detection; a visual recognition module is provided on each slide of the Y-axis linear module for shell detection.

5. The high-precision cover glass machine for LCD screen production according to claim 1, characterized in that: The material-retrieving cover glass unit includes a material-retrieving cover glass bracket, a material-retrieving cover glass X-axis linear module horizontally arranged on the material-retrieving cover glass, a material-retrieving cover glass Y-axis linear module arranged at the drive end of the material-retrieving cover glass X-axis linear module and placed perpendicular to the material-retrieving cover glass X-axis linear module, a material-retrieving cover glass Z-axis linear module vertically arranged at the drive end of the material-retrieving cover glass Y-axis linear module and placed perpendicular to the material-retrieving cover glass Y-axis linear module, an angle adjustment motor vertically arranged at the drive end of the material-retrieving cover glass Z-axis linear module, and a material-retrieving cover glass suction cup horizontally arranged at the drive end of the angle adjustment motor.

6. The high-precision cover glass machine for LCD screen production according to claim 1, characterized in that: The cover glass unloading conveyor line adopts an equidistant conveyor line.

7. The high-precision cover glass machine for producing liquid crystal screens according to any one of claims 1-6, characterized in that: It also includes a backlight module cleaning unit; A cleaning station is also provided on the turntable between the material loading station and the glass covering station; The backlight module cleaning unit includes a cleaning bracket, a support mechanism mounted on the cleaning bracket and located below the cleaning station, and a cleaning mechanism mounted on the cleaning bracket and located above the cleaning station. The cleaning mechanism includes a horizontally placed cleaning linear module, a slide table disposed at the drive end of the cleaning linear module, a floating frame vertically slidably disposed on the slide table, a grooved cam with a planar structure and placed parallel to the cleaning linear module, a track groove disposed on the grooved cam with a low center and high ends, a roller disposed on the floating frame and located in the track groove, a cleaning frame disposed at the bottom of the floating frame and placed perpendicular to the cleaning linear module, and a dust-adhesive roller rotatably disposed on the cleaning frame for cleaning the surface of the backlight module; an elastic component is disposed between the floating frame and the cleaning frame. The support mechanism has a lifting function and is used to support the bottom of the cleaning station or both ends of the outer shell on the cleaning station.

8. The high-precision cover glass machine for LCD screen production according to claim 7, characterized in that: It also includes a backlight module detection unit and a defective product unloading unit; The backlight module detection unit is located on one side of the cleaning station and is used to perform power-on detection on the cleaned backlight module. It includes a backlight module detection robot, a power-on mechanism, a vision positioning module, and a vision detection module respectively set on the drive end of the backlight module detection robot. The vision positioning module is used to identify the power-on position of the backlight module inside the shell on the cleaning station. The power-on mechanism is used to power on the backlight module inside the shell on the cleaning station. The vision detection module is located directly above the cleaning station and is used to inspect the powered backlight module. A defective product unloading station is also set up on the turntable between the cleaning station and the cover glass station; The defective product unloading unit is located on one side of the defective product unloading station and includes a defective product unloading conveyor line and a defective product unloading robot. The defective product unloading robot is used to place the shell with the defective product backlight module installed from the defective product unloading station onto the defective product unloading conveyor line for outflow.

9. The high-precision cover glass machine for LCD screen production according to claim 8, characterized in that: The shell loading robot, defective product unloading robot, and cover glass unloading robot have the same structure, all including a robotic arm and a gripper assembly with a robotic arm drive end; The gripper assembly includes a connecting seat, gripper cylinders respectively disposed at both ends of the connecting seat with their driving ends symmetrically facing outward, L-shaped grippers disposed at the driving ends of the gripper cylinders, and multiple suction cups vertically disposed at the bottom of the connecting seat.

Images