A high uniformity injection molded light guide plate and manufacturing method

Abstract

The present invention relates to the technical field of optical equipment, and discloses a method for manufacturing a highly uniform injection-molded light guide plate, comprising the following steps: preparing injection molding materials, making a mold according to the design drawings of the light guide plate, installing the mold on an injection molding machine, putting the injection molding materials into the injection molding machine, performing injection molding under set injection molding parameters, cutting and polishing the light-incoming surface of the molded light guide plate to form a micro-serrated surface, then using a cleaning device to clean the light guide plate, and annealing the injection-molded light guide plate, the annealing temperature is 50 degrees, the annealing time is 2 hours, and then naturally cooled. The present invention can effectively improve the incident efficiency and uniformity of light by arranging a micro-serrated structure on the light-incoming surface of the light guide plate, and distributing micro-protrusions on the light-emitting surface, which can help to further improve the uniformity of light emission.

Description

Technical Field

[0001] The present invention relates to the technical field of optical equipment, and in particular to an injection-molded light guide plate with high uniformity and a manufacturing method thereof. Background Art

[0002] With the continuous development of optoelectronic display technology, the requirements for uniform light distribution of light guide plates are getting higher and higher. The market for flat panel displays is expanding rapidly, and liquid crystal displays are required to have the characteristics of thin thickness, light weight, and low power consumption. The backlight module provides light source for liquid crystal displays. The performance of the backlight source directly affects the quality of liquid crystal displays. Improving the performance of the backlight module has a far-reaching impact on the liquid crystal display industry.

[0003] Backlight modules can be divided into direct-down and side-entry types according to the different distribution positions of the light source. Side-entry backlight refers to placing the light source on the side of the backlight mold. After the LED emits light, the light transmission direction is changed through the light guide plate and the light is evenly distributed. The light is gathered in the light-emitting area through the diffusion film and the light-enhancing film to reach a certain brightness standard. The effect of the light guide plate directly determines the visual effect and brightness of the backlight LCD module. The light guide plate is a device that converts a point light source or a line light source into a surface light source. It is mainly used for the backlight source of the display industry. The existing injection-molded light guide plate has certain limitations in terms of light uniformity. For this reason, we propose a highly uniform injection-molded light guide plate and a manufacturing method. Summary of the invention

[0004] In order to solve the technical problem of poor light uniformity of the existing injection-molded light guide plate, the present invention provides an injection-molded light guide plate with high uniformity and a manufacturing method.

[0005] The present invention is implemented by the following technical solution: A method for manufacturing a highly uniform injection-molded light guide plate, comprising the following steps:

[0006] S1: prepare injection molding materials;

[0007] S2: Make a mold according to the design drawing of the light guide plate and install the mold on the injection molding machine;

[0008] S3: Put the injection molding material into the injection molding machine and perform injection molding under the set injection molding parameters;

[0009] S4: cutting and polishing the light-incoming surface of the formed light guide plate to form a micro-serrated surface, and then using a cleaning device to clean the light guide plate;

[0010] S5: The injection molded light guide plate is annealed at a temperature of 50 degrees for 2 hours and then cooled naturally.

[0011] As a further improvement of the above scheme, the cleaning device comprises a box body and an installation frame arranged above the box body, both ends of the interior of the installation frame are provided with a driving shaft 1, the outer wall of the driving shaft 1 is fixedly sleeved with an upper conveying roller rotating inside the installation frame, both ends of the interior of the box body are provided with a driving shaft 2, the outer wall of the driving shaft 2 is fixedly sleeved with a lower conveying roller rotating inside the box body, a box body is fixed to the inner wall of the bottom of the box body, a water pipe is connected to the box body, the end of the water pipe away from the box body extends to the interior of the installation frame, a plurality of nozzles are installed on the water pipe, a fixing plate 1 is fixed inside the installation frame, a fixing plate 2 is fixed inside the box body, the nozzle located inside the installation frame is fixed on the fixing plate 1, and the nozzle located inside the box body is fixed on the fixing plate 2, through the operation of the cleaning device, the light guide plate can be continuously cleaned, and the spacing between the upper conveying roller and the lower conveying roller can be adjusted according to the thickness of the light guide plate.

[0012] As a further improvement of the above scheme, a piston block is slidably connected inside the box body, a mounting groove opened on the top side of the box body is provided between the port of the water delivery pipe and the piston block, a filter screen is fixed inside the mounting groove, a transmission frame sliding inside the box body is provided at one end of the box body, a plurality of teeth are fixed on the inner walls on both sides of the transmission frame, a linkage shaft rotating inside the box body is slidably penetrated inside the transmission frame, a half gear rotating inside the transmission frame is fixedly sleeved on the outer wall of the linkage shaft located inside the transmission frame, the half gear is meshed with the teeth, a push block is fixed on one end of the transmission frame close to the box body, and an end of the push block away from the transmission frame is fixed on the piston block, a cleaning brush fixed on the transmission frame is provided above the box body, the bristles of the cleaning brush cooperate with the filter screen, a transmission wheel 1 is fixedly sleeved on the outer wall of the linkage shaft and the outer wall of the adjacent two drive shafts, and a transmission belt 1 that cooperates with the transmission wheel 1 is provided on the outside of the transmission wheel 1, and through the operation of the above components, the water entering the box body can be filtered and the filter screen can be cleaned.

[0013] As a further improvement of the above scheme, the fixing plate 2 is provided with a sliding hole, and the water pipe slides inside the sliding hole. The length of the water pipe between the fixing plate 1 and the fixing plate 2 is greater than the distance between the fixing plate 1 and the fixing plate 2. By using the water pipe whose length is greater than the distance between the fixing plate 1 and the fixing plate 2, it can be avoided that the water pipe is insufficient in length and interferes with the vertical displacement of the installation frame.

[0014] As a further improvement of the above scheme, one end of the driving shaft 1 is rotatably connected to the inner wall of one side of the installation frame, and the other end of the driving shaft 1 passes through the outside of the installation frame and is transmission-connected with the motor 1, and the motor 1 is fixed to the outside of the installation frame; one end of the driving shaft 2 is rotatably connected to the inner wall of one side of the box body, and the other end of the driving shaft 2 passes through the outside of the box body and is transmission-connected with the motor 2, and the motor 2 is fixed to the outside of the box body; two ends of the installation frame are provided with a rotating hole 1, and the driving shaft 1 rotates inside the adjacent rotating hole 1; two ends of the box body are provided with a rotating hole 2, and the driving shaft 2 rotates inside the adjacent rotating hole 2; an opening is provided at one end of the box body close to the transmission frame, and the piston block slidably cooperates with the opening, and the operation of the motor 1 can drive the driving shaft 1 to rotate, and the operation of the motor 2 can drive the driving shaft 2 to rotate.

[0015] As a further improvement of the above scheme, the output end of the nozzle located on the fixed plate one faces the fixed plate two, and the output end of the nozzle located on the fixed plate two faces the fixed plate one. The bottom of one end of the box is connected to a drain pipe, and a butterfly valve is installed on the drain pipe. When the butterfly valve is opened, the water inside the box can be discharged through the drain pipe.

[0016] As a further improvement of the above scheme, a receiving groove is provided on the top side at both ends of the box body, and a connecting frame fixed to the bottom of the installation frame is slidably inserted inside the receiving groove. Sliding grooves connected to the receiving grooves are provided on the inner walls at both ends of the box body, and the sliding grooves are slidably connected to a transmission block fixed to an adjacent connecting frame. A driving sleeve is embedded on the transmission block, and a screw rod 1 is threadedly penetrated inside the driving sleeve at one end of the box body, and a screw rod 2 is threadedly penetrated inside the driving sleeve at the other end of the box body. Screw rod 1 and screw rod 2 are rotated, and the transmission block is driven to perform vertical displacement through the threaded cooperation of screw rod 1 and the driving sleeve, and through the threaded cooperation of screw rod 2 and the driving sleeve, the transmission frame is driven to perform vertical displacement, and the installation frame is driven to perform vertical displacement. At this time, the spacing between the installation frame and the box body can be adjusted.

[0017] As a further improvement of the above scheme, one end of the screw rod 1 is rotatably connected to the top side of the box body, and the other end of the screw rod 1 is transmission connected to the motor 3. A protective shell is provided on the outer side of the motor 3, and a stabilizing plate 1 fixed to the inner wall of the box body is fixed on the outer side of the protective shell. One end of the screw rod 2 is rotatably connected to the inner wall of the bottom of the box body, and the other end of the screw rod 2 is rotatably connected to a stabilizing plate 2 fixed to the inner wall of the box body. The outer walls of the screw rod 1 and the screw rod 2 are fixedly sleeved with a transmission wheel 2, and the outside of the transmission wheel 2 is provided with a transmission belt 2 that cooperates with the transmission wheel 2. The operation of the motor 3 can drive the screw rod 1 to rotate, and the transmission cooperation between the transmission wheel 2 and the transmission belt 2 can drive the screw rod 2 to rotate.

[0018] As a further improvement of the above scheme, the mold includes a tail slide, a sprue block insert, an inlet insert, a serrated slider insert, a block insert, and a groove structure, and the light guide plate can be molded by the mold.

[0019] A highly uniform injection-molded light guide plate, wherein the light incident surface of the light guide plate is provided with micro-serrations, and the light exit surface of the light guide plate is provided with a plurality of micro-protrusions, wherein the micro-protrusions are hemispherical and have a diameter between 0.45 mm and 0.55 mm.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can effectively improve the incident efficiency and uniformity of light by arranging a micro-serrated structure on the light incident surface of the light guide plate, and distribute micro-protrusions on the light output surface, which can help to further improve the uniformity of light output. In the manufacturing method, suitable injection molding materials and optimized injection molding parameters are selected to ensure the molding quality of the light guide plate and enhance the refraction and total reflection effects of light. Annealing treatment can eliminate the internal stress generated during the injection molding process and improve the optical performance and uniformity of the light guide plate.

[0022] 2. The present invention can continuously flush the formed light guide plate, can adaptively adjust the cleaning equipment according to the thickness of the light guide plate, improve the processing range of the cleaning equipment, filter the flushing water to improve the cleanliness of the water, and dredge the filter assembly of the cleaning equipment to prevent the filter holes of the filter assembly from being blocked by debris in the water after a long period of filtering work, thereby improving the endurance of the cleaning equipment and having high working performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a highly uniform injection-molded light guide plate and a cleaning device in a manufacturing method;

[0024] Figure 2 It is a schematic diagram of the water pipe in the cleaning equipment;

[0025] Figure 3 A cross-sectional view of a mounting frame in a cleaning device;

[0026] Figure 4 It is a cross-sectional view of a box in a cleaning device;

[0027] Figure 5 It is a schematic diagram of the drain pipe in the cleaning equipment;

[0028] Figure 6 It is a schematic diagram of the linkage shaft in the cleaning equipment;

[0029] Figure 7 It is a schematic diagram of a transmission frame in a cleaning device;

[0031] Figure 8 A schematic diagram of a mold in a high-uniformity injection-molded light guide plate and a manufacturing method;

[0032] Fig. 9 The present invention is a schematic diagram of a highly uniform injection-molded light guide plate and a light guide plate in a manufacturing method.

[0033] Description of main symbols:

[0034] 1. Box body; 2. Mounting frame; 3. Drive shaft 1; 4. Upper conveying roller; 5. Drive shaft 2; 6. Lower conveying roller; 7. Water pipe; 8. Nozzle; 9. Fixing plate 1; 10. Fixing plate 2; 11. Box body; 12. Filter screen; 13. Piston block; 14. Transmission frame; 15. Push block; 16. Linking shaft; 17. Half gear; 18. Cleaning brush; 19. Receiving groove; 20. Connection frame; 21. Transmission block; 22. Screw rod 1; 23. Screw rod 2; 24. Stabilizing plate 2; 25. Stabilizing plate 1; 26. Drain pipe; 27. Butterfly valve; 28. Tail position; 29. ​​Water inlet block insert; 30. Inlet insert; 31. Serrated slider insert; 32. Block insert; 33. Groove structure; 34. Micro-serration; 35. Light-emitting surface; 36. Micro-protrusion. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0036] Embodiment 1:

[0037] A method for manufacturing a highly uniform injection-molded light guide plate according to this embodiment includes the following steps:

[0038] S1: prepare injection molding materials;

[0039] S2: Make a mold according to the design drawing of the light guide plate and install the mold on the injection molding machine;

[0040] S3: Put the injection molding material into the injection molding machine and perform injection molding under the set injection molding parameters;

[0041] S4: cutting and polishing the light-incoming surface of the formed light guide plate to form a micro-serrated surface, and then using a cleaning device to clean the light guide plate;

[0042] S5: The injection molded light guide plate is annealed at a temperature of 50 degrees for 2 hours and then cooled naturally.

[0043] The injection molding material includes PMMA and a light diffuser, and the ratio of the light diffuser to PMMA is 1:1000.

[0044] The light-emitting surfaces of the molds are respectively manufactured to form micro groove structures, and the grooves are hemispherical and have a diameter of 45 μm.

[0045] The injection molding temperature of the injection molding machine is 300 degrees, the injection molding pressure is 2200Kgf / c, the injection molding speed is 200mm / s, and a hemispherical protrusion structure light guide plate is transferred.

[0046] The light-incident surface of the light guide plate adopts polished micro-serrations with a surface roughness RA of 5um.

[0047] Embodiment 2:

[0048] Combination Figure 1 , Figure 2 and Figure 5 , based on the embodiment 1, the present embodiment is further improved in that: the cleaning device comprises a box body 1 and an installation frame 2 arranged above the box body 1, a driving shaft 1 3 is provided at both ends of the interior of the installation frame 2, an upper conveying roller 4 rotating inside the installation frame 2 is fixedly sleeved on the outer wall of the driving shaft 1 3, a driving shaft 2 5 is provided at both ends of the interior of the box body 1, a lower conveying roller 6 rotating inside the box body 1 is fixedly sleeved on the outer wall of the driving shaft 2 5, a box body 11 is fixed to the inner wall of the bottom of the box body 1, a water pipe 7 is connected to the box body 11, an end of the water pipe 7 away from the box body 11 extends to the interior of the installation frame 2, a plurality of nozzles 8 are installed on the water pipe 7, a fixing plate 1 9 is fixed inside the installation frame 2, a fixing plate 2 10 is fixed inside the box body 1, the nozzle 8 located inside the installation frame 2 is fixed on the fixing plate 1 9, the nozzle 8 located inside the box body 1 is fixed on the fixing plate 2 10, the nozzle 8 inside the installation frame 2 is located between the two upper conveying rollers 4, the nozzle inside the box body 1 8 is located between the two lower conveying rollers 6. When the light guide plate needs to be cleaned, the light guide plate can be placed between the upper conveying roller 4 and the lower conveying roller 6. The upper conveying roller 4 is driven to rotate by the rotation of the driving shaft 1 3, and the lower conveying roller 6 is driven to rotate by the rotation of the driving shaft 2 5. The rotation of the upper conveying roller 4 and the lower conveying roller 6 can drive the light guide plate located between the upper conveying roller 4 and the lower conveying roller 6 to move. At this time, the light guide plate located between the upper conveying roller 4 and the lower conveying roller 6 will pass through the nozzle 8 between the fixing plate 1 9 and the fixing plate 2 10. At this time, the water inside the box body 11 can be transported to the nozzle 8 through the water pipe 7. The water sprayed by the nozzle 8 is used to wash the light guide plate between the upper conveying roller 4 and the lower conveying roller 6. The mounting frame 2 is vertically displaced upward, driving the driving shaft 1 3 and the upper conveying roller 4 to be vertically displaced upward. At this time, the distance between the upper conveying roller 4 and the lower conveying roller 6 can be adjusted according to the thickness of the light guide plate.

[0049] Embodiment 3:

[0050] Combination Figure 6 and Figure 7The present embodiment is further improved on the basis of the embodiment 2 in that: a piston block 13 is slidably connected to the inside of the box body 11, a mounting groove is provided between the port of the water pipe 7 and the piston block 13, a filter screen 12 is fixed inside the mounting groove, a transmission frame 14 is provided at one end of the box body 11 and slides inside the box body 1, a plurality of teeth are fixed to the inner walls on both sides of the transmission frame 14, a linkage shaft 16 that rotates inside the box body 1 is slidably penetrated inside the transmission frame 14, and a filter screen 12 is fixed inside the installation groove, and a transmission frame 14 is provided with a transmission frame 14 that slides inside the box body 1. The outer wall of the linkage shaft 16 is fixedly sleeved with a half gear 17 rotating inside the transmission frame 14, and the half gear 17 is meshed with the meshing teeth. A push block 15 is fixed to one end of the transmission frame 14 close to the box body 11, and the end of the push block 15 away from the transmission frame 14 is fixed to the piston block 13. A cleaning brush 18 fixed to the transmission frame 14 is provided above the box body 11. The bristles of the cleaning brush 18 cooperate with the filter screen 12. The outer wall of the linkage shaft 16 and the outer wall of the adjacent drive shaft 25 are fixedly sleeved with a transmission wheel 1, and the outer wall of the transmission wheel 1 A transmission belt 1 is provided for transmission with a transmission wheel 1. Through the filter screen 12, the water entering the box body 11 can be filtered. When the driving shaft 2 5 rotates, the transmission wheel 1 and the transmission belt 1 cooperate to drive the linkage shaft 16 to rotate. The rotation of the linkage shaft 16 drives the semi-gear 17 to rotate. The rotation of the semi-gear 17 drives the transmission frame 14 to reciprocate horizontally. At this time, the transmission frame 14 that reciprocates horizontally will drive the push block 15 to move horizontally back and forth. When the displaced piston block 13 passes through the filter screen 12 and is located between the filter screen 12 and the port of the water pipe 7, the displaced piston block 13 will push the water inside the box body 11 into the water pipe 7. When the transmission frame 14 is displaced, the cleaning brush 18 will be driven to displace. At this time, the filter screen 12 can be cleaned by the displaced cleaning brush 18 to prevent the filter screen 12 from being clogged by debris in the water after a long period of filtering.

[0051] The fixing plate 10 is provided with a sliding hole, and the water pipe 7 slides inside the sliding hole. The length of the water pipe 7 between the fixing plate 1 9 and the fixing plate 2 10 is greater than the distance between the fixing plate 1 9 and the fixing plate 2 10. By using the water pipe 7 whose length is greater than the distance between the fixing plate 1 9 and the fixing plate 2 10, it can be avoided that the water pipe 7 is not long enough and interferes with the vertical displacement of the installation frame 2.

[0052] One end of the driving shaft 3 is rotatably connected to the inner wall of one side of the mounting frame 2, and the other end of the driving shaft 3 penetrates to the outside of the mounting frame 2 and is transmission-connected with the motor 1, which is a forward and reverse stepping motor, and is fixed to the outside of the mounting frame 2. One end of the driving shaft 2 5 is rotatably connected to the inner wall of one side of the box body 1, and the other end of the driving shaft 2 5 penetrates to the outside of the box body 1 and is transmission-connected with the motor 2, which is a forward and reverse stepping motor, and is fixed to the outside of the box body 1. Rotating holes 1 are provided at both ends of the mounting frame 2, and the driving shaft 3 rotates inside the adjacent rotating holes 1. Rotating holes 2 are provided at both ends of the box body 1, and the driving shaft 2 5 rotates inside the adjacent rotating holes 2. An opening is provided at one end of the box body 11 close to the transmission frame 14, and the piston block 13 slidably cooperates with the opening. The operation of the motor 1 can drive the driving shaft 3 to rotate, and the operation of the motor 2 can drive the driving shaft 2 5 to rotate.

[0053] The output end of the nozzle 8 located on the fixed plate 1 9 faces the fixed plate 2 10, and the output end of the nozzle 8 located on the fixed plate 2 10 faces the fixed plate 1 9. The bottom of one end of the box body 1 is connected to a drain pipe 26, and a butterfly valve 27 is installed on the drain pipe 26. When the butterfly valve 27 is opened, the water inside the box body 1 can be discharged through the drain pipe 26.

[0054] Embodiment 4:

[0055] Combination Figure 3 and Figure 4 On the basis of Example 2, the present embodiment is further improved in that: a receiving groove 19 is provided on the top side at both ends of the box body 1, and a connecting frame 20 fixed to the bottom of the installation frame 2 is slidably inserted in the internal part of the receiving groove 19, and a sliding groove connected to the receiving groove 19 is provided on the inner wall at both ends of the box body 1, and a transmission block 21 fixed to the adjacent connecting frame 20 is slidably connected in the internal part of the sliding groove, and a driving sleeve is embedded in the transmission block 21, and a screw rod 1 22 is threadedly penetrated in the internal part of the driving sleeve at one end of the box body 1, and a screw rod 23 is threadedly penetrated in the internal part of the driving sleeve at the other end of the box body 1, and the screw rod 1 22 and the screw rod 23 are rotated, and the transmission block 21 is driven to perform vertical displacement through the thread cooperation of the screw rod 1 22 and the driving sleeve, and through the thread cooperation of the screw rod 2 23 and the driving sleeve, the transmission block 21 is driven to perform vertical displacement, the connecting frame 20 is driven to perform vertical displacement, and the installation frame 2 is driven to perform vertical displacement, and the spacing between the installation frame 2 and the box body 1 can be adjusted at this time.

[0056] One end of the screw rod 22 is rotatably connected to the top side of the box body 11, and the other end of the screw rod 22 is transmission-connected to the motor 3, which is a forward and reverse stepping motor. A protective shell is provided on the outside of the motor 3, and a stabilizing plate 25 fixed to the inner wall of the box body 1 is fixed on the outside of the protective shell. One end of the screw rod 23 is rotatably connected to the inner wall of the bottom of the box body 1, and the other end of the screw rod 23 is rotatably connected to the stabilizing plate 24 fixed on the inner wall of the box body 1. The outer walls of the screw rods 1 22 and the screw rods 23 are fixedly sleeved with a transmission wheel 2, and the outside of the transmission wheel 2 is provided with a transmission belt 2 that cooperates with the transmission wheel 2. The operation of the motor 3 can drive the screw rod 1 22 to rotate, and the transmission cooperation between the transmission wheel 2 and the transmission belt 2 can drive the screw rod 23 to rotate.

[0057] Embodiment 5:

[0058] Combination Figure 8 Based on Example 1, this embodiment is further improved in that: the mold includes a tail slide 28, a sprue block insert 29, an inlet insert 30, a serrated slider insert 31, a block insert 32, and a groove structure 33, and the light guide plate can be molded by the mold.

[0059] Embodiment 6:

[0060] Combination Fig. 9 Based on Example 1, this embodiment is further improved in that: a highly uniform injection-molded light guide plate, the light incident surface of the light guide plate is provided with micro-serrations 34, and the light output surface 35 of the light guide plate is provided with a plurality of micro-protrusions 36, the micro-protrusions 36 are hemispherical, and their diameters are between 0.45 mm and 0.55 mm.

[0061] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A method for manufacturing a highly uniform injection-molded light guide plate, comprising the following steps: S1: prepare injection molding materials; S2: Make a mold according to the design drawing of the light guide plate and install the mold on the injection molding machine; S3: Put the injection molding material into the injection molding machine and perform injection molding under the set injection molding parameters; S4: cutting and polishing the light-incoming surface of the formed light guide plate to form a micro-serrated surface, and then using a cleaning device to clean the light guide plate; S5: The injection molded light guide plate is annealed at a temperature of 50 degrees for 2 hours and then cooled naturally.

2. The method for manufacturing a highly uniform injection-molded light guide plate according to claim 1, characterized in that: The cleaning device includes a box body and an installation frame arranged above the box body, a driving shaft 1 is provided at both ends of the interior of the installation frame, an upper conveying roller rotating inside the installation frame is fixedly sleeved on the outer wall of the driving shaft 1, a driving shaft 2 is provided at both ends of the interior of the box body, a lower conveying roller rotating inside the box body is fixedly sleeved on the outer wall of the driving shaft 2, a box body is fixed on the inner wall of the bottom of the box body, a water pipe is connected to the box body, an end of the water pipe away from the box body extends to the interior of the installation frame, a plurality of nozzles are installed on the water pipe, a fixing plate 1 is fixed inside the installation frame, a fixing plate 2 is fixed inside the box body, the nozzle located inside the installation frame is fixed on the fixing plate 1, and the nozzle located inside the box body is fixed on the fixing plate 2.

3. The method for manufacturing a highly uniform injection-molded light guide plate according to claim 2, characterized in that: The interior of the box body is slidably connected with a piston block, and an installation groove opened on the top side of the box body is provided between the port of the water pipe and the piston block, and a filter screen is fixed inside the installation groove, and one end of the box body is provided with a transmission frame sliding inside the box body, and multiple teeth are fixed on the inner walls of both sides of the transmission frame, and a linkage shaft rotating inside the box body is slidably penetrated inside the transmission frame, and a half gear rotating inside the transmission frame is fixedly sleeved on the outer wall of the linkage shaft located inside the transmission frame, and the half gear is meshed with the teeth, and a pushing block is fixed on one end of the transmission frame close to the box body, and an end of the pushing block away from the transmission frame is fixed on the piston block, and a cleaning brush fixed on the transmission frame is provided above the box body, and the bristles of the cleaning brush cooperate with the filter screen, and the outer wall of the linkage shaft and the outer wall of the adjacent driving shaft are fixedly sleeved with a transmission wheel 1, and the outside of the transmission wheel 1 is provided with a transmission belt 1 that cooperates with the transmission wheel 1 for transmission.

4. The method for manufacturing a highly uniform injection-molded light guide plate according to claim 2, characterized in that: The second fixing plate is provided with a sliding hole, and the water pipe slides inside the sliding hole. The length of the water pipe between the first fixing plate and the second fixing plate is greater than the distance between the first fixing plate and the second fixing plate.

5. The method for manufacturing a highly uniform injection-molded light guide plate according to claim 3, characterized in that: One end of the driving shaft 1 is rotatably connected to the inner wall of one side of the installation frame, and the other end of the driving shaft 1 passes through the outside of the installation frame and is transmission-connected with the motor 1, and the motor 1 is fixed on the outside of the installation frame. One end of the driving shaft 2 is rotatably connected to the inner wall of one side of the box body, and the other end of the driving shaft 2 passes through the outside of the box body and is transmission-connected with the motor 2, and the motor 2 is fixed on the outside of the box body. Rotating hole 1 is opened at both ends of the installation frame, and the driving shaft 1 rotates inside the adjacent rotating hole 1. Rotating hole 2 is opened at both ends of the box body, and the driving shaft 2 rotates inside the adjacent rotating hole 2. An opening is opened at one end of the box body close to the transmission frame, and the piston block slides in cooperation with the opening.

6. The method for manufacturing a highly uniform injection-molded light guide plate according to claim 2, characterized in that: The output end of the nozzle located on the fixed plate one faces the fixed plate two, and the output end of the nozzle located on the fixed plate two faces the fixed plate one. The bottom of one end of the box body is connected to a drain pipe, and a butterfly valve is installed on the drain pipe.

7. The method for manufacturing a highly uniform injection-molded light guide plate according to claim 2, characterized in that: The top sides of both ends of the box body are provided with accommodating grooves, and a connecting frame fixed to the bottom of the installation frame is slidably inserted inside the accommodating grooves. The inner walls of both ends of the box body are provided with sliding grooves connected to the accommodating grooves, and the sliding grooves are slidably connected to transmission blocks fixed to adjacent connecting frames. A driving sleeve is embedded on the transmission block, and a screw rod 1 is threadedly penetrated inside the driving sleeve at one end of the box body, and a screw rod 2 is threadedly penetrated inside the driving sleeve at the other end of the box body.

8. The method for manufacturing a highly uniform injection-molded light guide plate according to claim 7, characterized in that: One end of the screw rod 1 is rotatably connected to the top side of the box body, and the other end of the screw rod 1 is transmission-connected to the motor 3. A protective shell is provided on the outer side of the motor 3, and a stabilizing plate 1 fixed to the inner wall of the box body is fixed on the outer side of the protective shell. One end of the screw rod 2 is rotatably connected to the inner wall of the bottom of the box body, and the other end of the screw rod 2 is rotatably connected to the stabilizing plate 2 fixed to the inner wall of the box body. The outer walls of the screw rods 1 and 2 are fixedly sleeved with a transmission wheel 2, and the outside of the transmission wheel 2 is provided with a transmission belt 2 that cooperates with the transmission wheel 2 for transmission.

9. The method for manufacturing a highly uniform injection-molded light guide plate according to claim 1, characterized in that: The mold comprises a tail slide, a sprue block insert, an inlet insert, a serrated slider insert, a block insert, and a groove structure.

10. The method for manufacturing a highly uniform injection-molded light guide plate according to claim 1, wherein: The light incident surface of the light guide plate is provided with micro-serrations, and the light exit surface of the light guide plate is provided with a plurality of micro-protrusions.

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