A curved liquid crystal screen based on a surface frosted device of a laser marker and a frosted method thereof

Abstract

This invention relates to the field of grinding equipment and provides a surface grinding device and method for curved LCD screens based on a laser pointer. The device includes a fixedly mounted lifting frame and a platform. A transport guide rail is located at the bottom of the lifting frame, and a traction handle is located at the top of the platform. A grinding mechanism is located at the bottom of the platform. Each of the four corners of the platform has a branch tube. A display screen workpiece is placed at the top of the frame and the branch tubes, and edge protection components are provided at the ends of the branch tubes. In use, the display screen workpiece is placed on the frame and the branch tubes. A stepper motor drives a steering gear set via its output shaft. The steering gear set drives a drive bevel gear through a telescopic sleeve. The drive bevel gear simultaneously drives both the forward and reverse bevel gears. During the grinding process, the grinding ring and grinding disc apply opposite frictional forces to the display screen workpiece. These two frictional forces cancel each other out, thus achieving precise grinding.

Description

Technical Field

[0001] This invention belongs to the field of polishing equipment, and specifically relates to a surface polishing device and method for curved LCD screens based on a laser pointer. Background Technology

[0002] With the development of industrial technology, modern polishing equipment technology has become more and more sophisticated. LCD screens need to go through a sanding process during production. LCD screens are precision products, so if the LCD screen shakes or deviates from its position during the sanding process, it will be damaged during the sanding process.

[0003] As disclosed in patent number 202121814945.9, a polishing device for LCD screen production includes a worktable with a first vertical plate and a second vertical plate at each end. An LCD screen adsorption platform is located above the worktable and is slidably connected between the first and second vertical plates via a drive mechanism. A horizontal plate is connected to the upper side of the first vertical plate, and a dust extraction pipe is connected to the top of the horizontal plate. A first groove is located at the end of the horizontal plate away from the first vertical plate, and two sliders are slidably connected to the first groove. Each slider has a first settling bolt for limiting its sliding position on the horizontal plate. A sliding rod is located at the bottom of the slider, and a polishing motor is connected to the bottom of the sliding rod. A polishing head is connected to the lower end of the output shaft of the polishing motor. A polishing cover is provided below the horizontal plate, and an LCD screen inlet / outlet is located near the second vertical plate of the polishing cover. This device facilitates efficient positioning and polishing of LCD screens of different specifications, while also helping to reduce environmental pollution during the polishing process.

[0004] The device has several drawbacks. First, during the polishing process, the rotating polishing disc generates frictional torque on the surface of the LCD screen. This torque causes slight deformation within the fixture, and the pressure between the edge of the LCD screen and the fixture becomes uneven, which can easily damage the LCD screen. Second, the higher the rotation speed of the polishing disc, the more violent the vibration will be when the disc contacts the LCD screen. If the vibration is too great, the LCD screen is prone to breakage or even detachment from the fixture. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a surface grinding device and method for curved LCD screens based on a laser pointer. In use, the display screen workpiece to be processed is placed on a frame and a bifurcated tube. The operator holds the traction handle and begins to drag the platform, which slides back and forth along the transport guide rail. Simultaneously, a stepper motor drives a steering gear set via its output shaft. The steering gear set, through a telescopic sleeve, drives a drive bevel gear to rotate. The drive bevel gear simultaneously drives both the forward and reverse bevel gears to rotate. The grinding disc at the bottom of the forward bevel gear rotates forward, while the expansion bracket and grinding ring at the bottom of the reverse bevel gear rotate in the opposite direction. During the grinding process, the grinding ring and grinding disc apply opposing frictional forces to the display screen workpiece. These two frictional forces cancel each other out, preventing the grinding device from generating torque on the LCD screen, thus solving the problems mentioned in the background art.

[0006] To solve the above problems, the present invention provides the following technical solution: a surface grinding device for curved LCD screens based on laser pointers, comprising a fixedly mounted hoisting frame and a square frame. Two transport guide rails are provided at the bottom of the hoisting frame, and a transport slider is slidably mounted on the transport guide rails. A platform is provided at the bottom of the transport slider, and a traction handle is provided at the top of the platform. A grinding mechanism is provided at the bottom of the platform. Each of the four corners of the square frame has a branch tube, and a display screen workpiece is provided at the top of the square frame and the branch tubes. Edge protection components are provided at the ends of the branch tubes. A suction plate is provided in the middle of the square frame, and four suction cups are provided at the top of the suction plate, which hold the bottom of the display screen workpiece. The suction plate is connected to the pull-down mechanism; the grinding mechanism includes a torsion frame rotatably mounted at the bottom of the traction handle, a forward bevel gear rotatably mounted at the top of the torsion frame, a reverse bevel gear rotatably mounted at the bottom of the torsion frame, and a drive bevel gear mounted on the side wall of the torsion frame. The drive bevel gear meshes with the forward bevel gear and the reverse bevel gear respectively. A through shaft is mounted on the axis of the forward bevel gear, and a tube shaft is mounted at the bottom of the reverse bevel gear. The through shaft passes through the middle of the tube shaft, and a grinding disc is mounted at the bottom of the through shaft. Three expansion brackets are mounted on the outer side wall of the tube shaft, and a grinding ring is mounted at the bottom of the expansion bracket. The drive bevel gear is connected to the drive mechanism.

[0007] Furthermore, a layer of sandpaper is attached to the bottom surface of the grinding ring and the grinding disc.

[0008] Furthermore, the drive mechanism includes a motor bracket on the side wall of the hoisting frame, a stepper motor is provided at the bottom of the motor bracket, an output shaft is provided at the output end of the stepper motor, a torque tube is rotatably provided at the top of the motor bracket, a bogie is fixedly provided at the top of the torque tube, a steering gear set is provided at the top of the bogie, the steering gear set includes a horizontal bevel gear and a vertical bevel gear that mesh with each other, the top of the output shaft is fixedly connected to the horizontal bevel gear, and the shafts of the vertical bevel gear and the drive bevel gear are connected by a telescopic sleeve.

[0009] Furthermore, the pull-down mechanism includes a counterweight bracket on the side wall of the hoisting frame, an L-shaped tube rotatably arranged in the middle of the counterweight bracket, a traction rope inserted in the middle of the L-shaped tube, a counterweight ball at the bottom end of the traction rope, a suction cup at the bottom end of the suction plate, the outer ring of the suction cup being fixedly connected to the bottom surface of the suction plate, a round rod in the inner ring of the suction cup, the top end of the traction rope being connected to the round rod, and the L-shaped tube being connected to the linkage mechanism.

[0010] Furthermore, the linkage mechanism includes a drive wheel on the output shaft and a driven wheel on the L-shaped tube, with the drive wheel and the driven wheel connected by a grid belt.

[0011] Furthermore, the edge protection assembly includes a pressing frame inserted into the bifurcated tube, with a pressing plate at the end of the pressing frame. The pressing plate is engaged with the corner of the display screen workpiece, and the pressing frame is connected to the tightening assembly.

[0012] Furthermore, the tightening assembly includes an inclined frame on the side wall of the pressing frame, an inclined plate at the bottom end of the inclined frame, a through slot at the end of the bifurcated tube, a telescopic groove on the pressing frame that matches the through slot, a pressure rod in the middle of the through slot, a pressure ball at the bottom end of the pressure rod, the pressure ball being attached to the side wall of the inclined plate, a circular plate at the top end of the pressure rod being attached to the bottom surface of the display screen workpiece, a return spring fitted on the outside of the pressure rod, the bottom end of the return spring being connected to the inner side wall of the through slot, and the top end of the return spring being connected to the bottom surface of the circular plate.

[0013] Furthermore, the L-shaped tube is made of stainless steel, the diameter of the traction rope is one millimeter, the diameter of the threading hole inside the L-shaped tube is two millimeters, the upper and lower openings of the L-shaped tube are both provided with rounded chamfers, and the threading hole and the traction rope are coated with lubricating oil.

[0014] Furthermore, the telescopic sleeve is provided with three square tube shafts, which are sleeved together. The frontmost square tube shaft is connected to the vertical bevel gear, and the rearmost square tube shaft is connected to the drive bevel gear.

[0015] Furthermore, the following steps are included:

[0016] S1. Place the display screen workpiece to be processed onto the frame and bifurcated tube. The operator holds the traction handle and begins to drag the platform. The platform will slide back and forth along the trajectory of the transport guide rail. At the same time, the stepper motor drives the steering gear set to start running through the output shaft. The steering gear set drives the drive bevel gear to rotate through the telescopic sleeve. The drive bevel gear drives the forward bevel gear and the reverse bevel gear to rotate at the same time. The grinding disc at the bottom of the forward bevel gear will rotate forward together, and the expansion bracket and grinding ring at the bottom of the reverse bevel gear will rotate in the opposite direction together. During the grinding process, the grinding ring and the grinding disc will apply opposite frictional forces to the display screen workpiece. The two frictional forces will cancel each other out.

[0017] S2. During the rotation of the output shaft driven by the stepper motor, the drive wheel on the outside of the output shaft will also rotate synchronously with the output shaft. The output shaft drives the driven wheel to rotate through the grid belt. The L-shaped tube rotates synchronously with the driven wheel. During the rotation of the L-shaped tube, it will generate a centripetal force on the counterweight ball at its bottom. The centripetal force of the counterweight ball will start to exert a downward pull on the round rod and the suction plate through the traction rope. The higher the rotation speed of the L-shaped tube, the greater the centripetal force that the counterweight ball at the bottom of the L-shaped tube will obtain. The rotation speed of the grinding ring, the grinding disc and the L-shaped tube are directly proportional. The higher the rotation speed of the grinding ring and the grinding disc, the greater the pull of the traction rope inside the L-shaped tube, and the greater the adhesion between the display screen workpiece at the top of the suction plate and the clamp.

[0018] S3. When the display screen workpiece applies pressure to the disc, the pressure rod and pressure ball at the bottom of the disc begin to apply pressure to the tilting disc. The tilting disc and the tilting frame and pressing frame at its top will contract into the inside of the bifurcated tube, and the pressing disc will press more tightly at the corner of the display screen workpiece.

[0019] Compared with the prior art, the embodiments of this application have the following main advantages:

[0020] Firstly, when using this device, the display screen workpiece to be processed is placed on the frame and bifurcated tube. The operator holds the traction handle and begins to drag the platform. The platform slides back and forth along the trajectory of the transport guide rail. At the same time, the stepper motor drives the steering gear set to start running through the output shaft. The steering gear set drives the drive bevel gear to rotate through the telescopic sleeve. The drive bevel gear drives the forward bevel gear and the reverse bevel gear to rotate simultaneously. The grinding disc at the bottom of the forward bevel gear will rotate forward together, and the expansion bracket and grinding ring at the bottom of the reverse bevel gear will rotate in the opposite direction together. During the grinding process, the grinding ring and grinding disc will apply opposite frictional forces to the display screen workpiece. The two frictional forces will cancel each other out, so the grinding device will not generate torque on the LCD screen.

[0021] Secondly, during the rotation of the output shaft driven by the stepper motor, the drive wheel on the outside of the output shaft also rotates synchronously with the output shaft. The output shaft drives the driven wheel to rotate through the grid belt, and the L-shaped tube rotates synchronously with the driven wheel. During the rotation of the L-shaped tube, it generates a centripetal force on the counterweight ball at its bottom. The centripetal force of the counterweight ball applies a downward pull to the round rod and the suction plate through the traction rope. The higher the rotation speed of the L-shaped tube, the greater the centripetal force that the counterweight ball at the bottom of the L-shaped tube will obtain. The rotation speed of the grinding ring, grinding disc and L-shaped tube are directly proportional. The higher the rotation speed of the grinding ring and grinding disc, the greater the pull of the traction rope inside the L-shaped tube will be. The display screen workpiece at the top of the suction plate will have a greater fit with the clamp, increasing the stability of high-speed grinding. Attached Figure Description

[0022] Figure 1 This is a frontal view of the present invention.

[0023] Figure 2 This is a schematic diagram of the invention from the side.

[0024] Figure 3 This is a schematic diagram showing a cross-section of the present invention.

[0025] Figure 4 This is a schematic diagram of the suction plate of the present invention.

[0026] Figure 5 This is a schematic diagram of the counterweight ball of the present invention.

[0027] Figure 6 This is a schematic diagram of the stepper motor of the present invention.

[0028] Figure 7 This is a schematic diagram of the pressing frame of the present invention.

[0029] Figure 8 This is a schematic diagram of the pressing frame of the present invention viewed from below.

[0030] Figure 9 This is a schematic diagram of the grinding disc of the present invention.

[0031] Figure 10 This is a schematic diagram of the grinding disc of the present invention from a second perspective.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Lifting frame, 101 transport guide rail, 102 platform, 103 traction handle, 2. Display screen workpiece, 3. Motor bracket, 301 stepper motor, 302 output shaft, 303 drive wheel, 304 driven wheel, 305 grid belt, 4. Frame, 401 branch pipe, 402 pressing frame, 403 pressing plate, 404 tilting frame, 405 tilting plate, 406 return spring, 407 round plate, 408 pressure rod, 409 pressure ball, 5. Counterweight bracket, 501 L-shaped tube, 502 counterweight ball, 6. suction plate, 601 bearing, 602 suction cup, 603 round rod, 7. Torque tube, 701 bogie, 702 telescopic sleeve, 703 steering gear set, 8. Torsion frame, 801 drive bevel gear, 802 expansion frame, 803 grinding ring, 804 grinding disc. Detailed Implementation

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] This invention provides a surface grinding device for curved LCD screens based on a laser pointer, such as... Figure 1-10As shown, the system includes a fixedly installed hoisting frame 1 and frame 4. The bottom of the hoisting frame 1 has two transport guide rails 101, on which transport sliders are slidably mounted. A platform 102 is located at the bottom of the transport sliders, and a traction handle 103 is located at the top of the platform 102. A grinding mechanism is located at the bottom of the platform 102. Each of the four corners of the frame 4 has a branch pipe 401. A display screen workpiece 2 is mounted at the top of the frame 4 and the branch pipes 401, and edge protection components are located at the ends of the branch pipes 401. A suction plate 6 is located in the middle of the frame 4, and four suction cups 602 are located at the top of the suction plate 6. The suction cups 602 adhere to the bottom surface of the display screen workpiece 2. The suction plate 6 is connected to the lower... The grinding mechanism includes a torsion frame 8 rotatably mounted at the bottom of the traction handle 103. A forward bevel gear is rotatably mounted at the top of the torsion frame 8, and a reverse bevel gear is rotatably mounted at the bottom of the torsion frame 8. A drive bevel gear 801 is also mounted on the side wall of the torsion frame 8. The drive bevel gear 801 meshes with the forward bevel gear and the reverse bevel gear respectively. A through shaft is mounted on the axis of the forward bevel gear, and a tube shaft is mounted at the bottom of the reverse bevel gear. The through shaft passes through the middle of the tube shaft. A grinding disc 804 is mounted at the bottom of the through shaft. Three expansion brackets 802 are mounted on the outer side wall of the tube shaft. A grinding ring 803 is mounted at the bottom of the expansion bracket 802. The drive bevel gear 801 is connected to the drive mechanism.

[0037] In this embodiment, the display screen workpiece 2 to be processed is placed on the frame 4 and the bifurcation tube 401. The operator holds the traction handle 103 and starts to drag the platform 102. The platform 102 slides back and forth along the trajectory of the transport guide rail 101, driving the bevel gear 801 to rotate simultaneously with the forward bevel gear and the reverse bevel gear. The grinding disc 804 at the bottom of the forward bevel gear will rotate forward together, while the expansion bracket 802 and the grinding ring 803 at the bottom of the reverse bevel gear will rotate in the opposite direction together. During the grinding process, the grinding ring 803 and the grinding disc 804 will apply opposite frictional forces to the display screen workpiece 2. The two frictional forces will cancel each other out. Compared with the grinding devices of the prior art, when the grinding disc of the past contacts the LCD screen, the grinding disc will generate a reverse torque on the LCD screen. This torque will cause the LCD screen to deform. The grinding ring 803 and the grinding disc 804 of this device will not generate torque on the LCD screen.

[0038] In further embodiments of the present invention, such as Figure 9-10 As shown, a layer of sandpaper is attached to the bottom surface of the grinding ring 803 and the grinding disc 804.

[0039] In this embodiment, the sandpaper at the bottom of the grinding ring 803 and the grinding disc 804 is replaced periodically, and the grinding device can be portablely adjusted to process different models of LCD screens.

[0040] In further embodiments of the present invention, such as Figure 1-6 As shown, the drive mechanism includes a motor bracket 3 on the side wall of the hoisting frame 1. A stepper motor 301 is provided at the bottom of the motor bracket 3, and an output shaft 302 is provided at the output end of the stepper motor 301. A torque tube 7 is rotatably provided at the top of the motor bracket 3, and a bogie 701 is fixedly provided at the top of the torque tube 7. A steering gear set 703 is provided at the top of the bogie 701. The steering gear set 703 includes a horizontal bevel gear and a vertical bevel gear that mesh with each other. The top of the output shaft 302 is fixedly connected to the horizontal bevel gear, and the vertical bevel gear and the axis of the drive bevel gear 801 are connected by a telescopic sleeve 702.

[0041] In this embodiment, the stepper motor 301 drives the steering gear set 703 to start running through the output shaft 302. The steering gear set 703 drives the drive bevel gear 801 to rotate through the telescopic sleeve 702. During the movement of the platform 102, the distance between the bogie 701 and the platform 102 will change, thereby causing the telescopic sleeve 702 to lengthen or shorten.

[0042] In further embodiments of the present invention, such as Figure 1-6 As shown, the pull-down mechanism includes a counterweight bracket 5 on the side wall of the hoisting frame 1. An L-shaped tube 501 is rotatably arranged in the middle of the counterweight bracket 5. A traction rope is inserted through the middle of the L-shaped tube 501. A counterweight ball 502 is provided at the bottom end of the traction rope. A suction cup 602 is provided at the bottom end of the suction plate 6. The outer ring of the suction cup 602 is fixedly connected to the bottom surface of the suction plate 6. A round rod 603 is provided in the inner ring of the suction cup 602. The top end of the traction rope is connected to the round rod 603. The L-shaped tube 501 is connected to the linkage mechanism.

[0043] In this embodiment, during the rotation of the L-shaped tube 501, a centripetal force is generated on the counterweight ball 502 at its bottom end. The centripetal force of the counterweight ball 502 is used to apply a downward pulling force to the round rod 603 and the suction plate 6 through the traction rope. The higher the rotation speed of the L-shaped tube 501, the greater the centripetal force will be on the counterweight ball 502 at the bottom end of the L-shaped tube 501. Changing the rotation speed of the L-shaped tube 501 can change the clamping force of the display screen workpiece 2 on the frame 4.

[0044] In further embodiments of the present invention, such as Figure 1-6 As shown, the linkage mechanism includes a drive wheel 303 on the output shaft 302 and a driven wheel 304 on the L-shaped tube 501. The drive wheel 303 and the driven wheel 304 are connected by a grid belt 305.

[0045] In this embodiment, the drive wheel 303 on the outside of the output shaft 302 will also rotate synchronously with the output shaft 302. The output shaft 302 drives the driven wheel 304 to rotate through the grid belt 305. The L-shaped tube 501 rotates synchronously with the driven wheel 304. The rotation speed of the grinding ring 803, the grinding disc 804 and the L-shaped tube 501 are proportional. The higher the rotation speed of the grinding ring 803 and the grinding disc 804, the greater the tension of the traction rope inside the L-shaped tube 501, and the greater the adhesion between the display screen workpiece 2 at the top of the suction plate 6 and the frame 4.

[0046] In further embodiments of the present invention, such as Figure 7-10 As shown, the edge protection assembly includes a pressing frame 402 inserted in the bifurcated tube 401, and a pressing piece 403 is provided at the end of the pressing frame 402. The pressing piece 403 is engaged at the corner of the display screen workpiece 2, and the pressing frame 402 is connected to the tightening assembly.

[0047] In this embodiment, the pressing frame 402 is inserted in the bifurcated tube 401, and the pressing sheet 403 can apply pressure to the corner of the display screen workpiece 2 through the tightening assembly.

[0048] In further embodiments of the present invention, such as Figure 7-10 As shown, the tightening assembly includes an inclined frame 404 on the side wall of the pressing frame 402. An inclined plate 405 is provided at the bottom end of the inclined frame 404. A through slot is provided at the end of the bifurcated tube 401. A telescopic groove matching the through slot is provided on the pressing frame 402. A pressure rod 408 is provided in the middle of the through slot. A pressure ball 409 is provided at the bottom end of the pressure rod 408. The pressure ball 409 is attached to the side wall of the inclined plate 405. A circular plate 407 is provided at the top end of the pressure rod 408. The circular plate 407 is attached to the bottom surface of the display screen workpiece 2. A return spring 406 is fitted on the outside of the pressure rod 408. The bottom end of the return spring 406 is connected to the inner side wall of the through slot, and the top end of the return spring 406 is connected to the bottom surface of the circular plate 407.

[0049] In this embodiment, when the display screen workpiece 2 applies pressure to the disc 407, the pressure rod 408 and pressure ball 409 at the bottom of the disc 407 begin to apply pressure to the tilting plate 405. The tilting plate 405 and its top tilting frame 404 and pressing frame 402 will shrink into the inside of the bifurcation tube 401, and the pressing plate 403 will press more tightly at the corner of the display screen workpiece 2.

[0050] In further embodiments of the present invention, such as Figure 1-5 As shown, the L-shaped tube 501 is made of stainless steel, the diameter of the traction rope is one millimeter, the diameter of the threading hole inside the L-shaped tube 501 is two millimeters, the upper and lower openings of the L-shaped tube 501 are both provided with rounded chamfers, and the threading hole and the traction rope are coated with lubricating oil.

[0051] In this embodiment, the lubricating oil reduces the friction between the L-shaped tube 501 and the traction rope, thereby reducing the wear of the traction rope during high-speed rotation.

[0052] In further embodiments of the present invention, such as Figure 1-5 As shown, the telescopic sleeve 702 is provided with three square tube shafts, which are sleeved together. The frontmost square tube shaft is connected to the vertical bevel gear, and the rearmost square tube shaft is connected to the drive bevel gear 801.

[0053] In this embodiment, if the display screen workpiece 2 is to be processed with a longer length, the stage 102 will require a greater range of motion. The operator will replace the square tube shaft with four or more sections according to the processing requirements.

[0054] Includes the following steps:

[0055] S1. Place the display screen workpiece 2 to be processed on the frame 4 and the bifurcation tube 401. The operator holds the traction handle 103 and starts to drag the platform 102. The platform 102 will slide back and forth along the trajectory of the transport guide rail 101. At the same time, the stepper motor 301 drives the steering gear set 703 to start running through the output shaft 302. The steering gear set 703 drives the drive bevel gear 801 to rotate through the telescopic sleeve 702. The drive bevel gear 801 drives the forward bevel gear and the reverse bevel gear to rotate at the same time. The grinding disc 804 at the bottom of the forward bevel gear will rotate forward together. The expansion bracket 802 and the grinding ring 803 at the bottom of the reverse bevel gear will rotate in the opposite direction together. During the grinding process, the grinding ring 803 and the grinding disc 804 will apply opposite frictional forces to the display screen workpiece 2. The two frictional forces will cancel each other out.

[0056] S2. During the rotation of the output shaft 302 driven by the stepper motor 301, the drive wheel 303 on the outside of the output shaft 302 will also rotate synchronously with the output shaft 302. The output shaft 302 drives the driven wheel 304 to rotate through the grid belt 305. The L-shaped tube 501 rotates synchronously with the driven wheel 304. During the rotation, the L-shaped tube 501 will generate a centripetal force on the counterweight ball 502 at its bottom end. The centripetal force of the counterweight ball 502 will start to exert a downward pull on the round rod 603 and the suction plate 6 through the traction rope. The higher the rotation speed of the L-shaped tube 501, the greater the centripetal force will be obtained by the counterweight ball 502 at the bottom end of the L-shaped tube 501. The rotation speed of the grinding ring 803, the grinding disc 804 and the L-shaped tube 501 are proportional. The higher the rotation speed of the grinding ring 803 and the grinding disc 804, the greater the pull of the traction rope inside the L-shaped tube 501 will be, and the greater the adhesion force between the display screen workpiece 2 at the top of the suction plate 6 and the clamp.

[0057] S3. When the display screen workpiece 2 applies pressure to the disc 407, the pressure rod 408 and pressure ball 409 at the bottom of the disc 407 begin to apply pressure to the tilting plate 405. The tilting plate 405 and its top tilting frame 404 and pressing frame 402 will shrink into the inside of the bifurcation tube 401, and the pressing plate 403 will press more tightly at the corner of the display screen workpiece 2.

[0058] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0059] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0060] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A surface grinding device for a curved LCD screen based on a laser pointer, characterized in that: It includes a fixed hoisting frame (1) and a frame (4). The bottom end of the hoisting frame (1) is provided with two transport guide rails (101). A transport slider is slidably installed on the transport guide rails (101). A platform (102) is provided at the bottom end of the transport slider. A traction handle (103) is provided at the top end of the platform (102). A grinding mechanism is provided at the bottom end of the platform (102). The four corners of the frame (4) are provided with branch pipes (401), the top of the frame (4) and the branch pipes (401) are provided with display screen workpieces (2), and the ends of the branch pipes (401) are provided with edge protection components. A suction plate (6) is provided in the middle of the frame (4), and four suction cups (602) are provided at the top of the suction plate (6). The suction cups (602) adhere to the bottom surface of the display screen workpiece (2). The suction plate (6) is connected to the pull-down mechanism. The grinding mechanism includes a torsion frame (8) rotatably mounted at the bottom of the traction handle (103). A forward bevel gear is rotatably mounted at the top of the torsion frame (8), and a reverse bevel gear is rotatably mounted at the bottom of the torsion frame (8). A drive bevel gear (801) is also mounted on the side wall of the torsion frame (8). The drive bevel gear (801) meshes with the forward bevel gear and the reverse bevel gear respectively. A through shaft is mounted on the axis of the forward bevel gear, and a tube shaft is mounted at the bottom of the reverse bevel gear. The through shaft passes through the middle of the tube shaft. A grinding disc (804) is mounted at the bottom of the through shaft. Three expansion brackets (802) are mounted on the outer side wall of the tube shaft. A grinding ring (803) is mounted at the bottom of the expansion brackets (802). The drive bevel gear (801) is connected to the drive mechanism.

2. The surface grinding device for a curved LCD screen based on a laser pointer according to claim 1, characterized in that: A layer of sandpaper is attached to the bottom surface of the grinding ring (803) and the grinding disc (804).

3. The surface grinding device for a curved LCD screen based on a laser pointer according to claim 1, characterized in that: The drive mechanism includes a motor bracket (3), a stepper motor (301) is provided at the bottom of the motor bracket (3), an output shaft (302) is provided at the output end of the stepper motor (301), a torque tube (7) is rotatably provided at the top of the motor bracket (3), a bogie (701) is fixedly provided at the top of the torque tube (7), a steering gear set (703) is provided at the top of the bogie (701), the steering gear set (703) includes a horizontal bevel gear and a vertical bevel gear that mesh with each other, the top of the output shaft (302) is fixedly connected to the horizontal bevel gear, and the vertical bevel gear and the axis of the drive bevel gear (801) are connected by a telescopic sleeve (702).

4. The surface grinding device for a curved LCD screen based on a laser pointer according to claim 1, characterized in that: The pull-down mechanism includes a counterweight bracket (5), an L-shaped tube (501) is rotatably arranged in the middle of the counterweight bracket (5), a traction rope is inserted in the middle of the L-shaped tube (501), a counterweight ball (502) is arranged at the bottom end of the traction rope, a suction cup (602) is arranged at the bottom end of the suction plate (6), the outer ring of the suction cup (602) is fixedly connected to the bottom surface of the suction plate (6), a round rod (603) is arranged in the inner ring of the suction cup (602), the top end of the traction rope is connected to the round rod (603), and the L-shaped tube (501) is connected to the linkage mechanism.

5. The surface grinding device for a curved LCD screen based on a laser pointer according to claim 4, characterized in that: The linkage mechanism includes a drive wheel (303) on the output shaft (302) and a driven wheel (304) on the L-shaped tube (501). The drive wheel (303) and the driven wheel (304) are connected by a grid belt (305).

6. The surface grinding device for a curved LCD screen based on a laser pointer according to claim 1, characterized in that: The edge protection assembly includes a pressing frame (402) inserted in the bifurcated tube (401), and a pressing plate (403) is provided at the end of the pressing frame (402). The pressing plate (403) is engaged at the corner of the display screen workpiece (2). The pressing frame (402) is connected to the tightening assembly.

7. The surface grinding device for a curved LCD screen based on a laser pointer according to claim 6, characterized in that: The tightening assembly includes an inclined frame (404) on the side wall of the pressing frame (402), an inclined piece (405) at the bottom end of the inclined frame (404), a through slot at the end of the bifurcated tube (401), a telescopic groove matching the through slot on the pressing frame (402), a pressure rod (408) in the middle of the through slot, a pressure ball (409) at the bottom end of the pressure rod (408), the pressure ball (409) fitting against the side wall of the inclined piece (405), a circular piece (407) at the top end of the pressure rod (408), the circular piece (407) fitting against the bottom surface of the display screen workpiece (2), a return spring (406) fitted on the outside of the pressure rod (408), the bottom end of the return spring (406) connected to the inner side wall of the through slot, and the top end of the return spring (406) connected to the bottom surface of the circular piece (407).

8. The surface grinding device for a curved LCD screen based on a laser pointer according to claim 4, characterized in that: The L-shaped tube (501) is made of stainless steel, the diameter of the traction rope is one millimeter, the diameter of the threading hole inside the L-shaped tube (501) is two millimeters, the upper and lower openings of the L-shaped tube (501) are provided with rounded chamfers, and the threading hole and the traction rope are coated with lubricating oil.

9. The surface grinding device for a curved LCD screen based on a laser pointer according to claim 3, characterized in that: The telescopic sleeve (702) is provided with three square tube shafts, which are sleeved together. The frontmost square tube shaft is connected to the vertical bevel gear, and the rearmost square tube shaft is connected to the drive bevel gear (801).

10. A surface polishing method, comprising a surface polishing apparatus for a curved LCD screen based on a laser pointer according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Place the display screen workpiece (2) to be processed on the frame (4) and the bifurcation tube (401). The worker holds the traction handle (103) and starts to drag the platform (102). The platform (102) will slide back and forth along the trajectory of the transport guide rail (101). At the same time, the stepper motor (301) drives the steering gear set (703) to start running through the output shaft (302). The steering gear set (703) drives the drive bevel gear (801) to rotate through the telescopic sleeve (702). The drive bevel gear (801) drives the forward bevel gear and the reverse bevel gear to rotate at the same time. The grinding disc (804) at the bottom of the forward bevel gear will rotate in the forward direction. The expansion bracket (802) and the grinding ring (803) at the bottom of the reverse bevel gear will rotate in the reverse direction together. During the grinding process, the grinding ring (803) and the grinding disc (804) will apply opposite frictional forces to the display screen workpiece (2). The two frictional forces will cancel each other out. S2. During the process of the stepper motor (301) driving the output shaft (302) to rotate, the drive wheel (303) on the outside of the output shaft (302) will also rotate synchronously with the output shaft (302). The output shaft (302) drives the driven wheel (304) to rotate through the grid belt (305). The L-shaped tube (501) rotates synchronously with the driven wheel (304). During the rotation, the L-shaped tube (501) will generate a centripetal force on the counterweight ball (502) at its bottom end. The centripetal force of the counterweight ball (502) is transmitted through the traction rope. When a downward pulling force is applied to the round rod (603) and the suction plate (6), the higher the rotation speed of the L-shaped tube (501), the greater the centripetal force will be obtained by the counterweight ball (502) at the bottom of the L-shaped tube (501). The rotation speed of the grinding ring (803), the grinding disc (804) and the L-shaped tube (501) are proportional. The higher the rotation speed of the grinding ring (803) and the grinding disc (804), the greater the pulling force of the traction rope inside the L-shaped tube (501), and the greater the adhesion force between the display screen workpiece (2) at the top of the suction plate (6) and the clamp. S3. When the display screen workpiece (2) applies pressure to the disc (407), the pressure rod (408) and pressure ball (409) at the bottom of the disc (407) begin to apply pressure to the tilting piece (405). The tilting piece (405) and its top tilting frame (404) and pressing frame (402) will shrink into the inside of the bifurcation tube (401), and the pressing piece (403) will press more tightly at the corner of the display screen workpiece (2).

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