A light guide plate dot processing device and method based on arc reflection

Abstract

The application relates to the technical field of light guide plate processing, and discloses a light guide plate dot processing device and method based on arc reflection, which comprises a processing base and an operation base arranged above the processing base. The light guide plate to be processed is placed on the processing base. A laser beam emitting device is fixedly arranged in the operation base, and the laser beam emitted by the laser beam emitting device is perpendicular to the processing base. The operation base is connected with the operation base through a swing assembly. A connecting frame assembly rotating around the laser beam emitting device is arranged at the bottom of the operation base. In the application, the laser beam emitted vertically from the laser beam emitting device is reflected once through a first high-speed galvanometer and then is adjusted twice through a second high-speed galvanometer, so that the laser beam is generated from bottom to top, the light guide plate does not need to be turned over, the laser beam generated from bottom to top directly acts on the bottom of the light guide plate to complete dot processing, and the dot processing efficiency of the bottom of the light guide plate is improved.

Description

Technical Field

[0001] This invention relates to the field of light guide plate processing technology, and in particular to a light guide plate dot processing device and method based on arc reflection. Background Technology

[0002] Laser thermal processing is currently one of the most important and mainstream technologies in the processing of dot patterns on high-end light guide plates. The device utilizes a high-energy-density laser beam to irradiate the surface of the light guide plate. After the laser energy is absorbed by the light guide plate, it instantly generates high temperatures, causing localized melting, vaporization, or chemical changes, thus forming a tiny pit or modified point – this is a "dot pattern." Traditional laser thermal processing of dot patterns often involves direct laser irradiation followed by changing the laser angle to complete the operation. However, the above methods typically have the following problems: First, the dot processing of light guide plates requires thermal processing with laser beams to generate the corresponding structures. Therefore, it is necessary to continuously adjust the position of the laser beam on the light guide plate. The conventional method is to rotate the laser generator to adjust the position of the laser beam on the light guide plate. However, directly adjusting the deflection angle of the laser generator will result in a large deviation in the position of the laser beam on the light guide plate if the distance between the laser generator and the light guide plate is large, even a small angular deflection will make it difficult to control. Secondly, for laser beam dot processing on the bottom of the light guide plate, the light guide plate is usually flipped directly. This flipping requires an additional clamping and flipping mechanism, and it is impossible to emit a laser beam from bottom to top to act directly on the bottom of the light guide plate. Therefore, traditional laser thermal processing devices for dot processing of light guide plates cannot achieve rapid processing by emitting a laser beam from bottom to top.

[0003] To address this, we designed a device and method for processing dot patterns on a light guide plate based on arc reflection. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that traditional laser thermal processing devices for light guide plates cannot achieve rapid processing by emitting laser beams from bottom to top in the existing technology. Therefore, this invention proposes a light guide plate dot processing device and method based on arc reflection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A dot matrix processing device for a light guide plate based on arc reflection includes a processing base and an operating base disposed above the processing base. A light guide plate to be processed is placed on the processing base. A laser beam emitting device is fixedly disposed inside the operating base, and the laser beam emitted by the laser beam emitting device is perpendicular to the processing base. The operating base is connected to the operating base through a swing assembly. A connecting frame assembly that rotates around the laser beam emitting device is disposed at the bottom of the operating base. A high-speed galvanometer system assembly for changing the direction of the laser beam is rotatably connected below the connecting frame assembly. The high-speed galvanometer system assembly includes a first high-speed galvanometer and a second high-speed galvanometer. The connecting frame assembly is equipped with a deflection component that drives the second high-speed galvanometer to rotate, and changes the direction of the laser beam again.

[0006] Preferably, a counterweight is provided on the operating base, and the operating base is arranged parallel to the processing base. The operating base has an inner cavity with a through hole at the bottom. The laser beam emitting device is fixed in the inner cavity, and the laser beam emitted by the laser beam emitting device passes through the through hole. An electric rotating mounting platform is provided at the bottom of the operating base, and the electric rotating mounting platform is coaxial with the through hole. The connecting frame assembly is vertically fixed on the electric rotating mounting platform.

[0007] Preferably, the oscillating component includes: Side mounting brackets are provided in two sets and are symmetrically installed on both sides of the processing base. Each side mounting bracket is equipped with a swing bracket that swings through a rotating shaft, and the two swing brackets swing in opposite directions. The swing arm is rotatably mounted on the ball table assembly and the swing frame, and is slidably inserted into the operating base. One end of the swing arm extends into the inner cavity, and a fixing ring is fixed to the outer wall of the swing arm. A first return spring is connected between the fixing ring and the operating base.

[0008] Preferably, the connecting frame assembly includes: The fixed tube is fixed on the electric rotating mounting platform. A lifting tube is coaxially installed below the fixed tube. The lifting tube and the fixed tube are connected by a connecting frame. A downward pressure rod slides coaxially between the rising tube and the fixed tube. An electric telescopic rod is installed on the outer wall of the fixed tube, and the output end of the electric telescopic rod is connected to the outer wall of the downward pressure rod.

[0009] Preferably, the high-speed galvanometer system components further include: A hinge is used to rotatably connect the first high-speed galvanometer and the second high-speed galvanometer. Multiple elastic pull ropes are connected between the first high-speed galvanometer and the second high-speed galvanometer. The elastic pull ropes are used to pull the first high-speed galvanometer and the second high-speed galvanometer to be flush. The first high-speed galvanometer is located directly below the through hole.

[0010] Preferably, the first high-speed galvanometer is provided with a galvanometer system mounting bracket body, and a rotating shaft assembly is provided on one side of the lifting tube. The galvanometer system mounting bracket body is rotatably connected to the rotating shaft assembly, and a propulsion assembly for driving the first high-speed galvanometer to rotate is provided on the lifting tube.

[0011] Preferably, the propulsion component includes: The push rod slides perpendicularly to the lifting tube. The galvanometer system mounting bracket body has a sliding groove, and a sliding shaft platform slides on the sliding groove. The sliding shaft platform is rotatably connected to the push rod. A truncated cone assembly, comprising an inverted cone and a piston arranged coaxially, the truncated cone assembly slides up and down within a rising tube, and the push rod abuts against the inverted cone via a second return spring; The pressure rod is fixed coaxially with the truncated cone assembly.

[0012] Preferably, the deflection component includes: An end plate is set inside the inner cavity and is coaxially fixed with the end of the swing rod. Oil chambers are symmetrically arranged on both sides of the operating base. The oil chambers are filled with oil. A piston rod that slides in the oil chamber is fixed to the end plate. An oil outlet hole communicating with the oil chamber is provided at the bottom of the operating base. An oil inlet pipe is installed on the fixed pipe, and the oil inlet pipe is connected to the oil outlet.

[0013] Preferably, the deflection component further includes: A connecting hole is provided on the lower pressure rod. A bottom base is provided at the bottom of the lifting tube. An oil hole is provided in the truncated cone assembly. The connecting hole is connected to the bottom base through the oil hole and the connecting pipe. The bottom of the first high-speed galvanometer has an installation cavity facing the second high-speed galvanometer, and an expansion film bag is installed inside the installation cavity. The expansion film bag is connected to the bottom base through a rubber hose.

[0014] A method for processing dot patterns on a light guide plate based on arc reflection, the specific operation steps of which are as follows: S1: First, place the light guide plate to be processed on the processing base, then turn on the laser beam emitting device and let the laser beam emitted by the laser beam emitting device be emitted vertically. The laser beam passes through the through hole and reaches the first high-speed galvanometer. Then the laser beam is reflected by the first high-speed galvanometer. After reflection, the laser beam is focused on the area of ​​the light guide plate to be processed that needs to be heat treated. S2: To perform dot laser thermal processing on the upper surface of the light guide plate, it is only necessary to activate the electric telescopic rod, drive the truncated cone assembly to descend and push the push rod to move laterally, thereby pushing the sliding shaft to slide on the sliding groove, changing the position of the laser beam acting on the light guide plate, thus completing the dot processing of the light guide plate; S3: When it is necessary to perform dot laser thermal processing on the lower surface of the light guide plate, lift the light guide plate with the upper surface processed, swing the swing frames on both sides of the processing base in opposite directions, so that the end plate at the end of the swing rod pushes the oil in the oil chamber with the piston rod, so that the oil expands the expansion film bag, and drives the second high-speed galvanometer and the first high-speed galvanometer to bend. After being reflected and deflected twice, the laser beam, which was originally vertical, becomes an upward-sloping laser beam, thus completing the dot laser thermal processing on the lower surface of the light guide plate.

[0015] The beneficial effects of this invention are as follows: 1. In this invention, the laser beam emitting device is fixedly set up, which not only ensures the stable setting of the laser beam emitting device and thus its stable use, but also allows the laser beam emitting device to generate a vertical laser beam. After being reflected by the first high-speed galvanometer, the laser beam indirectly acts on the surface of the light guide plate to be processed, thereby completing the laser thermal processing. When it is necessary to change the processing area of ​​the light guide plate to be processed, it is only necessary to change the rotation angle of the first high-speed galvanometer. Compared with the traditional rotating laser beam emitting device, the distance between the laser emitting end and the acting end can be effectively reduced, which allows for better adjustment of the laser beam's laser thermal processing area on the light guide plate dots.

[0016] 2. In this invention, the laser beam emitted vertically from the laser beam emitting device is reflected once by the first high-speed galvanometer and then adjusted twice by the second high-speed galvanometer. This allows the laser beam to be generated from bottom to top, eliminating the need to flip the light guide plate. The laser beam from bottom to top can directly act on the bottom of the light guide plate to complete the dot processing, which is beneficial to improving the efficiency of laser thermal processing of dots at the bottom of the light guide plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a light guide plate dot processing device based on arc reflection proposed in this invention; Figure 2 This is a schematic diagram of the operating platform in a light guide plate dot processing device based on arc reflection proposed in this invention. Figure 3 This is an isometric view of the upper and lower isometric views of the operating platform in a light guide plate dot processing device based on arc reflection proposed in this invention. Figure 4 This is a top sectional view of the operating platform in a light guide plate dot processing device based on arc reflection proposed in this invention. Figure 5 This is a schematic diagram of the high-speed galvanometer system component in a light guide plate dot processing device based on arc reflection proposed in this invention; Figure 6The above and below are isometric views of the high-speed galvanometer system components in the light guide plate dot processing device based on arc reflection proposed in this invention. Figure 7 This is a schematic diagram of the swing state of the high-speed galvanometer system component in a light guide plate dot processing device based on arc reflection proposed in this invention. Figure 8 This is a schematic diagram of the internal structure of the lifting tube in a light guide plate dot processing device based on arc reflection proposed in this invention.

[0018] In the diagram: 1. Machining base; 2. Side mounting bracket; 3. Swing bracket; 4. Operating base; 5. Swing rod; 6. Connecting frame assembly; 61. Fixing pipe; 62. Lifting pipe; 63. Connecting frame; 64. Pressing rod; 65. Rotating shaft assembly; 7. High-speed galvanometer system components; 71. First high-speed galvanometer; 72. Second high-speed galvanometer; 8. Inner cavity; 9. Laser beam emitting device; 10. Through hole; 11. Fixing ring; 12. First return spring; 13. End plate; 14. Oil cavity; 15. Piston rod; 16. Oil outlet; 17. Electric rotating mounting platform; 18. Oil inlet pipe; 19. Electric telescopic rod; 20. Galvanometer system mounting bracket body; 21. Elastic pull rope; 22. Expansion film bag; 23. Rubber hose; 24. Sliding groove; 25. Sliding shaft platform; 26. Push rod; 27. Connecting hole; 28. Bottom base; 29. ​​Frustum conical assembly. Detailed Implementation

[0019] Reference Figures 1-8 A dot matrix processing device for a light guide plate based on arc reflection includes a processing base 1 and an operating base 4 disposed above the processing base 1. A light guide plate to be processed is placed on the processing base 1. It should be noted that the light guide plate to be processed is disposed on the processing base 1 by an external clamping mechanism, and then a laser beam emitting device 9 acts on the light guide plate to be processed, thereby realizing the dot matrix laser thermal processing of the light guide plate.

[0020] A laser beam emitting device 9 is fixedly installed inside the operating base 4, and the laser beam emitted by the laser beam emitting device 9 is perpendicular to the processing base. The operating base 4 has an inner cavity 8, and a through hole 10 is opened at the bottom of the inner cavity 8. The laser beam emitting device 9 is fixed inside the inner cavity 8. The laser beam emitted by the laser beam emitting device 9 passes through the through hole 10. Then the laser beam emitting device 9 is turned on, so that the laser beam emitted by the laser beam emitting device 9 is emitted vertically. The laser beam passes through the through hole 10 and reaches the first high-speed galvanometer 71. Then the laser beam is reflected by the first high-speed galvanometer 71. After reflection, the laser beam is focused on the area in the light guide plate to be processed that needs to be heat treated.

[0021] It should be noted that in the prior art, the laser beam emitting device 9 usually has a rotating effect, thereby changing the angle of the laser beam. However, this method usually requires the related device to swing the laser beam emitting device 9. Directly swinging the laser beam emitting device 9 will cause even slight angle adjustments in areas farther away from the laser beam emitting device 9 to cause large deviations in the dot laser thermal processing area acting on the light guide plate.

[0022] Therefore, a device for reflecting the laser beam is needed to reflect the laser beam emitted by the fixed laser beam emitting device 9. This allows the laser beam angle to be changed while keeping the laser beam emitting device 9 vertically fixed, thereby realizing the dot laser thermal processing of the light guide plate. The bottom of the operating base 4 is provided with a connecting frame assembly 6 that rotates around the laser beam emitting device 9. The operating base 4 is provided with a counterweight, and the operating base 4 is parallel to the processing base 1. Therefore, it can be ensured that the laser beam emitted by the laser beam emitting device 9 in the operating base 4 is always perpendicular to the processing base 1.

[0023] The bottom of the operating base 4 is provided with an electric rotating mounting platform 17, and the electric rotating mounting platform 17 is coaxially arranged with the through hole 10. The connecting frame assembly 6 is vertically fixed on the electric rotating mounting platform 17. The electric rotating mounting platform 17 is also turned on, so that the electric rotating mounting platform 17 carries the connecting frame assembly 6 with the high-speed galvanometer system assembly 7 to rotate around the vertical laser beam, thus changing the position of the laser beam acting on the light guide plate.

[0024] The connecting frame assembly 6 includes a fixed tube 61, which is fixed on the electric rotating mounting platform 17. A lifting tube 62 is coaxially arranged below the fixed tube 61. The lifting tube 62 and the fixed tube 61 are connected by a connecting frame 63. A downward pressure rod 64 is coaxially slidable between the lifting tube 62 and the fixed tube 61. An electric telescopic rod 19 is provided on the outer wall of the fixed tube 61, and the output end of the electric telescopic rod 19 is connected to the outer wall of the downward pressure rod 64, thereby driving the high-speed galvanometer system assembly 7 on the connecting frame assembly 6 to rise and fall together.

[0025] When performing laser thermal processing on the dots of a light guide plate, it is usually necessary to perform laser thermal processing on both the upper and lower surfaces of the light guide plate. Therefore, the laser thermal processing of dots on the upper surface of the light guide plate is required. Therefore, when performing dot laser thermal processing on the upper surface of the light guide plate, and when it is necessary to adjust other areas for the dot processing of the light guide plate, it is necessary to adjust the corresponding laser beam deflection angle. A high-speed galvanometer system component 7 for changing the direction of the laser beam is rotatably connected below the connecting frame assembly 6. The first high-speed galvanometer 71 is located directly below the through hole 10. The high-speed galvanometer system component 7 includes the first high-speed galvanometer 71, the second high-speed galvanometer 72, and a hinge. The hinge is used to rotatably connect the first high-speed galvanometer 71 and the second high-speed galvanometer 72. A galvanometer system mounting frame body 20 is provided on the first high-speed galvanometer 71, and a rotating shaft assembly 65 is provided on one side of the lifting tube 62. The galvanometer system mounting frame body 20 is rotatably connected to the rotating shaft assembly 65.

[0026] Reference Figure 8 In the state, the lifting tube 62 is equipped with a propulsion assembly that drives the first high-speed galvanometer 71 to rotate. The propulsion assembly includes a propulsion rod 26, which slides perpendicularly to the lifting tube 62. The dot pattern of the light guide plate to be processed after laser heat treatment is repositioned. At this time, the position of the light guide plate to be processed placed on the processing base 1 remains unchanged. It is only necessary to open the electric telescopic rod 19 so that the electric telescopic rod 19 pushes the pressure rod 64 to slide up and down in the lifting tube 62.

[0027] The galvanometer system mounting bracket body 20 has a sliding groove 24, and a sliding shaft 25 slides on the sliding groove 24. The sliding shaft 25 is rotatably connected to the push rod 26. The pressing rod 64 is coaxially fixed with the truncated cone assembly 29. The truncated cone assembly 29 includes an inverted cone and a piston arranged coaxially. The truncated cone assembly 29 slides up and down in the lifting tube 62. The push rod 26 abuts against the inverted cone through the second return spring. The truncated cone assembly 29 descends and pushes the push rod 26 to move laterally, thereby pushing the sliding shaft 25 to slide on the sliding groove 24. Finally, the galvanometer system mounting bracket body 20 carries the first high-speed galvanometer 71 to rotate on the rotating shaft assembly 65, thereby changing the laser reflection angle and ultimately changing the position of the laser beam acting on the light guide plate, thus completing the dot processing of the light guide plate.

[0028] If the lower surface of the light guide plate needs to be processed by laser thermal processing, it is only necessary to lift the light guide plate whose upper surface has been processed with the assistance of an external lifting device.

[0029] The operating base 4 is connected to the operating base 1 via a swing assembly. The swing assembly includes two side mounting brackets 2, which are symmetrically installed on both sides of the processing base 1. Each side mounting bracket 2 is equipped with a swing frame 3 that swings via a rotating shaft, and the two swing frames 3 swing in opposite directions. The swing rod 5 is rotatably connected to the swing frame 3 via a ball table assembly, and the swing rod 5 is slidably inserted into the operating base 4. One end of the swing rod 5 extends into the inner cavity 8. A fixing ring 11 is fixed to the outer wall of the swing rod 5, and a first return spring 12 is connected between the fixing ring 11 and the operating base 4. The swing frames 3 on both sides of the processing base 1 swing in opposite directions, so that the swing rod 5, which was originally located in the vertical plane, is deflected. At this time, the swing rod 5, which was originally located in the operating base 4, is pulled out of the inner cavity 8 of the operating base 4.

[0030] The connecting frame assembly 6 is equipped with a deflection assembly that drives the second high-speed galvanometer 72 to rotate and change the direction of the laser beam again. The deflection assembly includes an end plate 13, which is located in the inner cavity 8 and is coaxially fixed with the end of the swing rod 5. Oil chambers 14 are symmetrically arranged on both sides of the operating base 4. The oil chambers 14 are filled with oil. The end plate 13 is fixed with a piston rod 15 that slides in the oil chamber 14. The bottom of the operating base 4 is provided with an oil outlet hole 16 that communicates with the oil chamber 14. An oil inlet pipe 18 is provided on the fixed pipe 61 and communicates with the oil outlet hole 16. Therefore, the end plate 13 at the end of the swing rod 5 can push the oil in the oil chamber 14 out with the piston rod 15. This part of the oil enters the fixed pipe 61 and then enters the oil inlet pipe 18.

[0031] Multiple elastic pull ropes 21 are connected between the first high-speed galvanometer 71 and the second high-speed galvanometer 72. The elastic pull ropes 21 are used to pull the first high-speed galvanometer 71 and the second high-speed galvanometer 72 to be flush. The deflection assembly also includes a connecting hole 27, which is opened on the lower pressure rod 64. A bottom base 28 is provided at the bottom of the lifting tube 62. An oil hole is provided in the truncated cone assembly 29, and the connecting hole 27 is connected to the bottom base 28 through the oil hole and the connecting tube.

[0032] The bottom of the first high-speed galvanometer 71 has an installation cavity facing the second high-speed galvanometer 72, and an expansion film bag 22 is provided in the installation cavity. The expansion film bag 22 is connected to the bottom base 28 through a rubber hose 23. Oil enters the expansion film bag 22 in the installation cavity through the connecting hole 27 on the lower pressure rod 64 and the rubber hose 23, thereby expanding the expansion film bag 22. This causes the second high-speed galvanometer 72 and the first high-speed galvanometer 71, which were originally located on the same plane, to deflect. The oil flow caused by the opposite swing angle of the swing frame 3 enters the expansion film bag 22, and causes the second high-speed galvanometer 72 and the first high-speed galvanometer 71 to bend at the same angle.

[0033] Therefore, at this time, the angle formed by the rotation of the second high-speed galvanometer 72 and the first high-speed galvanometer 71 causes the laser beam, which was originally vertical, to become an upwardly tilted laser beam after the laser beam has been reflected and deflected twice, thus completing the dot laser thermal processing on the lower surface of the light guide plate.

[0034] The working principle of this invention is as follows: S1: First, place the light guide plate to be processed on the processing base 1, and place the area of ​​the light guide plate to be processed that needs to be heat treated below the operating base 4. Then turn on the laser beam emitting device 9 and let the laser beam emitted by the laser beam emitting device 9 be emitted vertically. The laser beam passes through the through hole 10 and reaches the first high-speed galvanometer 71. Then the laser beam is reflected by the first high-speed galvanometer 71. After reflection, the laser beam is focused on the area of ​​the light guide plate to be processed that needs to be heat treated. S2: When performing dot laser thermal processing on the upper surface of the light guide plate, if it is necessary to adjust other areas for the dot processing of the light guide plate, the corresponding laser beam deflection angle needs to be adjusted. The dot of the light guide plate after laser thermal processing is repositioned. At this time, the position of the light guide plate to be processed placed on the processing base 1 remains unchanged. Only the electric telescopic rod 19 needs to be opened, so that the electric telescopic rod 19 pushes the pressure rod 64 to slide up and down in the lifting tube 62, thereby driving the truncated cone assembly 29 to descend and push the push rod 26 to move laterally, thereby pushing the sliding shaft 25 to slide on the sliding groove 24. Finally, the galvanometer system mounting bracket body 20 carries the first high-speed galvanometer 71 to rotate on the rotating shaft assembly 65, thereby changing the laser reflection angle and ultimately changing the position of the laser beam acting on the light guide plate, thus completing the dot processing of the light guide plate. Similarly, the electric rotating mounting stage 17 is turned on, and the electric rotating mounting stage 17, carrying the connecting frame assembly 6 with the high-speed galvanometer system assembly 7, rotates around the vertical laser beam, thus changing the position of the laser beam acting on the light guide plate. S3: When it is necessary to perform dot laser thermal processing on the lower surface of the light guide plate, it is only necessary to lift the light guide plate with the assistance of the external lifting device. The deflection angles of the second high-speed galvanometer 72 and the first high-speed galvanometer 71 are the same as the swing angle of the swing frame 3 in the vertical plane. It should be noted that the swing frames 3 on both sides of the processing base 1 are swung in opposite directions. In this way, the swing rod 5, which was originally located in the vertical plane, is deflected. At this time, the swing rod 5, which was originally located in the operating base 4, is pulled out of the inner cavity 8 in the operating base 4, thereby allowing the end of the swing rod 5 to be... Plate 13, along with piston rod 15, pushes the oil in oil chamber 14 out. This oil enters fixed tube 61 and flows along connecting hole 27 on lower pressure rod 64 and rubber hose 23 into expansion film bag 22 in mounting cavity, thereby allowing the oil to expand expansion film bag 22. This causes the second high-speed galvanometer 72 and the first high-speed galvanometer 71, which were originally on the same plane, to deflect. The oil flow caused by the opposite swing angle of swing frame 3 enters expansion film bag 22, and causes the second high-speed galvanometer 72 and the first high-speed galvanometer 71 to bend at the same angle. Therefore, at this time, the angle formed by the rotation of the second high-speed galvanometer 72 and the first high-speed galvanometer 71 causes the laser beam, which was originally vertical, to become an upwardly tilted laser beam after the laser beam has been reflected and deflected twice, thus completing the dot laser thermal processing on the lower surface of the light guide plate.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dot matrix processing device for a light guide plate based on arc reflection, comprising a processing base (1) and an operating base (4) disposed above the processing base (1), wherein a light guide plate to be processed is placed on the processing base (1), characterized in that, The operating base (4) is fixedly equipped with a laser beam emitting device (9) for laser thermal processing of the light guide plate to be processed, and the laser beam emitted by the laser beam emitting device (9) is perpendicular to the processing base. The operating base (4) is connected to the operating base (4) through a swing assembly. The bottom of the operating base (4) is provided with a connecting frame assembly (6) that rotates around the laser beam emitting device (9). A high-speed galvanometer system assembly (7) that changes the direction of the laser beam is rotatably connected below the connecting frame assembly (6). The high-speed galvanometer system assembly (7) includes a first high-speed galvanometer (71) and a second high-speed galvanometer (72). The connecting frame assembly (6) is equipped with a deflection assembly that drives the second high-speed galvanometer (72) to rotate and changes the direction of the laser beam for laser thermal processing again.

2. The light guide plate dot processing device based on arc reflection according to claim 1, characterized in that, The operating base (4) is equipped with a counterweight and is parallel to the processing base (1). The operating base (4) has an inner cavity (8) with a through hole (10) at the bottom. The laser beam emitting device (9) is fixed in the inner cavity (8) and the laser beam emitted by the laser beam emitting device (9) passes through the through hole (10). The operating base (4) is equipped with an electric rotating mounting platform (17) at the bottom and is coaxial with the through hole (10). The connecting frame assembly (6) is vertically fixed on the electric rotating mounting platform (17).

3. The light guide plate dot processing device based on arc reflection according to claim 2, characterized in that, The swing assembly includes: Side mounting bracket (2), there are two side mounting brackets (2) and they are symmetrically installed on both sides of the processing base (1). Each side mounting bracket (2) is equipped with a swing bracket (3) that swings through a rotating shaft, and the two swing brackets (3) swing in opposite directions. The swing rod (5) is rotatably set by the ball table assembly and the swing frame (3), and the swing rod (5) is slidably inserted into the operating base (4). One end of the swing rod (5) extends into the inner cavity (8). A fixing ring (11) is fixed on the outer wall of the swing rod (5), and a first return spring (12) is connected between the fixing ring (11) and the operating base (4).

4. The light guide plate dot processing device based on arc reflection according to claim 3, characterized in that, The connector assembly (6) includes: A fixed tube (61) is fixed on an electric rotating mounting platform (17). A lifting tube (62) is coaxially arranged below the fixed tube (61). The lifting tube (62) and the fixed tube (61) are connected by a connecting frame (63). A downward pressure rod (64) is slidably connected between the lifting tube (62) and the fixed tube (61). An electric telescopic rod (19) is provided on the outer wall of the fixed tube (61), and the output end of the electric telescopic rod (19) is connected to the outer wall of the downward pressure rod (64).

5. The light guide plate dot processing device based on arc reflection according to claim 4, characterized in that, The high-speed galvanometer system component (7) also includes: A hinge is used to rotatably connect the first high-speed galvanometer (71) and the second high-speed galvanometer (72). Multiple elastic pull ropes (21) are connected between the first high-speed galvanometer (71) and the second high-speed galvanometer (72). The elastic pull ropes (21) are used to pull the first high-speed galvanometer (71) and the second high-speed galvanometer (72) to be flush. The first high-speed galvanometer (71) is located directly below the through hole (10).

6. The light guide plate dot processing device based on arc reflection according to claim 5, characterized in that, The first high-speed galvanometer (71) is provided with a galvanometer system mounting bracket body (20), and a rotating shaft assembly (65) is provided on one side of the lifting tube (62). The galvanometer system mounting bracket body (20) is rotatably connected to the rotating shaft assembly (65), and a propulsion assembly for driving the first high-speed galvanometer (71) to rotate is provided on the lifting tube (62).

7. The light guide plate dot processing device based on arc reflection according to claim 6, characterized in that, The propulsion components include: The push rod (26) slides perpendicularly to the lifting tube (62). The galvanometer system mounting bracket body (20) is provided with a sliding groove (24), and a sliding shaft platform (25) slides on the sliding groove (24). The sliding shaft platform (25) is rotatably connected to the push rod (26). The truncated cone assembly (29) includes an inverted cone and a piston arranged coaxially. The truncated cone assembly (29) slides up and down within the lifting tube (62). The push rod (26) abuts against the inverted cone through a second return spring. The pressure rod (64) is fixed coaxially with the truncated cone assembly (29).

8. The light guide plate dot processing device based on arc reflection according to claim 7, characterized in that, The deflection components include: End plate (13) is set in the inner cavity (8) and is fixed coaxially with the end of the swing rod (5). Oil chambers (14) are symmetrically arranged on both sides of the operating base (4). The oil chambers (14) are filled with oil. The end plate (13) is fixed with a piston rod (15) that slides in the oil chamber (14). The bottom of the operating base (4) is provided with an oil outlet hole (16) that communicates with the oil chamber (14). An oil inlet pipe (18) is provided on the fixed pipe (61), and the oil inlet pipe (18) is connected to the oil outlet hole (16).

9. The light guide plate dot processing device based on arc reflection according to claim 8, characterized in that, The deflection components also include: A connecting hole (27) is provided on the lower pressure rod (64). A bottom base (28) is provided at the bottom of the lifting tube (62). An oil hole is provided in the truncated cone assembly (29), and the connecting hole (27) is connected to the bottom base (28) through the oil hole and the connecting pipe. The first high-speed galvanometer (71) has an installation cavity on the side of the bottom facing the second high-speed galvanometer (72), and an expansion film bag (22) is provided in the installation cavity. The expansion film bag (22) is connected to the bottom base (28) through a rubber hose (23).

10. A method for processing dot matrix of a light guide plate based on arc reflection, applied to the dot matrix processing device for a light guide plate based on arc reflection as described in claim 9, characterized in that, The specific operating steps are as follows: S1: First, place the light guide plate to be processed on the processing base (1), then turn on the laser beam emitting device (9) and let the laser beam emitted by the laser beam emitting device (9) be emitted vertically. The laser beam passes through the through hole (10) and reaches the first high-speed galvanometer (71). Then the laser beam is reflected by the first high-speed galvanometer (71). After reflection, the laser beam is focused on the area in the light guide plate to be processed that needs to be heat treated. S2: To perform dot laser thermal processing on the upper surface of the light guide plate, it is only necessary to open the electric telescopic rod (19), drive the truncated cone assembly (29) to descend and push the push rod (26) to move laterally, thereby pushing the sliding shaft (25) to slide on the sliding groove (24), changing the position of the laser beam acting on the light guide plate, thus completing the dot processing of the light guide plate; S3: If the lower surface of the light guide plate needs to be processed by laser thermal processing, the light guide plate with the upper surface processed is lifted, and the swing frames (3) on both sides of the processing base (1) are swung in opposite directions, so that the end plate (13) at the end of the swing rod (5) pushes the oil in the oil chamber (14) with the piston rod (15) to squeeze out the oil, so that the oil expands the expansion film bag (22), and drives the second high-speed galvanometer (72) and the first high-speed galvanometer (71) to bend. After being reflected and deflected twice, the laser beam, which was originally vertical, becomes an upward-sloping laser beam, thus completing the dot laser thermal processing on the lower surface of the light guide plate.

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