Low-temperature coating device for HUD (head up display) resin lens and coating process thereof

Abstract

The invention discloses a low-temperature coating device for HUD resin lenses and a coating process thereof, and relates to the technical field of coating and coating, the low-temperature coating device comprises a working box, a fixing assembly used for positioning a plurality of resin lenses at the same time is arranged in the working box, and a control assembly used for changing the facing directions of the mirror surfaces of the plurality of lenses at the same time is arranged in the working box; according to the film coating device, the mirror face orientation of the multiple resin lenses can be positioned and changed at the same time, film coating on the two faces of the multiple resin lenses is achieved, the production efficiency is improved, the multiple sets of lenses can be stably fixed, and the production efficiency is improved. According to the utility model, movement or shaking is avoided in the coating process, the coating accuracy is ensured, the coating spray gun can be matched with the moving lens to carry out two-side coating, the coating precision is improved, automatic operations of lens positioning, lens orientation change, coating spray gun movement and the like are realized, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coating and coating, in particular to a low-temperature coating device and a coating process for a HUD resin lens. Background Art

[0002] HUD resin lenses refer to lenses used in head-up display technology. HUD resin lenses are usually optical lenses made of special transparent materials with low-temperature coating devices and coating processes for HUD resin lenses. They are used to project information into the driver's or pilot's field of view so that they can obtain key information without looking away. This type of lens can reflect and project information from the vehicle dashboard or equipment in the aircraft cockpit, allowing the driver or pilot to simultaneously observe the road or airspace ahead and important operating data, improving the real-time nature of information and the driver / pilot's concentration. When producing HUD resin lenses, coating treatment is usually required. Coating can give HUD resin lenses specific optical properties and protective properties to meet their requirements in head-up display systems; In the prior art, a Chinese invention patent with publication number CN114807867A discloses a single-sided coating device and a coating method thereof, including a coating box, a support plate installed on one side of the coating box, a vacuum pump installed on the top of the support plate, the vacuum pump is connected to the coating box through a conduit, a frame is movably installed inside the coating box, a plurality of placement trays are arranged inside the frame, a plurality of movably connected clamps are arranged inside the placement trays, and the lenses are clamped by arranging a plurality of clamps, which not only facilitates loading and unloading, but also facilitates the rack to be pulled out with the assistance of a telescopic box by arranging a movable frame.

[0003] The above patent can only coat one side of the lens, and the single-sided coating will lead to uneven optical performance of the lens, thus affecting the imaging quality and transmittance. At the same time, the lens will be easily affected by environmental factors such as moisture and oxidation after long-term use, thereby reducing the durability of the lens. Single-sided coating will also lead to insufficient overall structural strength of the lens, which is prone to deformation or damage, limiting the performance of the HUD resin lens. Therefore, we propose a low-temperature coating device for HUD resin lenses and a coating process thereof to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a low-temperature coating device for HUD resin lenses and a coating process thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: The low-temperature coating device for HUD resin lenses provided by the present invention comprises a working box, wherein a fixing component for simultaneously positioning a plurality of resin lenses is arranged inside the working box, the fixing component is fixedly connected to the bottom of the inner cavity of the working box, a control component for simultaneously changing the mirror orientations of a plurality of lenses is arranged inside the working box, the control component is fixedly connected to the bottom of the inner cavity of the working box, the fixing component is distributed around the control component, coating components for cooperating with the control component to realize coating of both sides of a plurality of resin lenses are arranged around the fixing component, a plurality of transparent observation windows are fixedly connected around the working box, the plurality of observation windows are evenly distributed around the axis of the working box, a closing cover is hinged on one side of the top of the working box, and a plurality of cooling nozzles for cooling the air in the box are installed at the bottom of the closing cover.

[0006] Preferably, the fixing assembly includes a plurality of first support rods, the bottom of the first support rods is fixedly connected to the bottom of the inner cavity of the working box, the plurality of first support rods are evenly distributed around the axis of the working box, the top of the first support rod is fixedly connected to a mounting platform, the top of the mounting platform is fixedly connected to a plurality of diagonal support rods, the top of the diagonal support rods is fixedly connected to a support roller, and the plurality of diagonal support rods are fixedly connected to a fixing frame on one side close to the axis of the working box.

[0007] Preferably, an assembly ring is fixedly connected to the top of the fixing frame, the assembly ring and the mounting table coincide with the axis of the working box, a plurality of mounting seats are sleeved on the surface of the assembly ring, the mounting seats are rotatably connected to the assembly ring, the plurality of mounting seats are evenly distributed around the axis of the assembly ring, a half-toothed ring is fixedly connected to the side of the mounting seat close to the axis of the working box, and a fixed table is fixedly connected to the end of the mounting seat away from the axis of the working box, and the bottom of the fixed table is in contact with the support roller.

[0008] Preferably, the surface of the fixed platform is provided with a plurality of fixed windows penetrating the fixed platform, the plurality of fixed windows are evenly distributed along the length direction of the fixed platform, sliding rods are fixedly connected to both sides of the inner wall of the fixed window, the sliding rods on both sides are symmetrically distributed along the axis of the fixed window, and clamping plates are sleeved on the surfaces of the two sliding rods.

[0009] Preferably, the clamping plate is slidably connected to the sliding rod, and both sides of the clamping plate are slidably connected to the inner wall of the fixed window, and the end surfaces of the two clamping plates away from each other are provided with return springs, and the return springs are respectively sleeved on the surfaces of the two sliding rods, one end of the return spring is in contact with the clamping plate, and the other end surface of the return spring is sleeved with a fixed tube, and the end of the fixed tube away from the clamping plate is fixedly connected to the inner wall of the fixed window.

[0010] Preferably, the control component includes a telescopic cylinder, which is placed in a working box, and the bottom of the telescopic cylinder is fixedly connected to the bottom of the inner cavity of the working box, and the output end of the telescopic cylinder is fixedly connected to a moving roller, and the end of the moving roller away from the telescopic cylinder extends to the top through the mounting platform, and the moving roller is slidably connected to the mounting platform.

[0011] Preferably, an assembly roller is fixedly connected to the top of the moving roller, the axes of the assembly roller, the telescopic cylinder and the working box coincide, the assembly roller is placed between a plurality of fixed platforms, the outer surface of the assembly roller is slidably connected to the inner wall of the assembly ring, a plurality of mounting grooves matching the mounting seat are provided around the assembly roller, the plurality of mounting grooves are evenly distributed around the axis of the assembly roller, a tooth plate matching the semi-toothed ring is fixedly connected to the bottom of the inner cavity of the mounting groove, and the assembly roller is meshedly connected to the semi-toothed ring via the tooth plate.

[0012] Preferably, the coating assembly includes a plurality of second support rods, the bottom of the second support rods is fixedly connected to the bottom of the inner cavity of the working box, the plurality of second support rods are evenly distributed around the axis of the assembly roller, the top of the support rod is fixedly connected to a guide rail, the guide rail is divided into two sections and is perpendicular to each other, one section of the guide rail is parallel to the surface of the fixed table, and the other end of the guide rail is parallel to the axis of the assembly roller, the inner wall of the guide rail is fixedly connected to a plurality of evenly distributed teeth, and a sliding window is provided on the side of the guide rail close to the fixed table that runs through the guide rail.

[0013] Preferably, the guide rail has a built-in moving rod, and a matching gear is sleeved on the end of the moving rod close to the teeth, and the gear is fixedly connected to the moving rod, and the guide rail is meshed with the gear through the teeth, and a servo motor is provided at the end of the moving rod away from the gear, and the output end of the servo motor is fixedly connected to the moving rod, and a guide seat is sleeved on the surface of the servo motor, and the guide seat is fixedly connected to the servo motor, the guide seat is square, and the upper and lower sides of the guide seat are slidably connected to the inner wall of the guide rail, and a coating spray gun is installed on the side of the guide seat close to the connecting window.

[0014] The coating process of the HUD resin lens low-temperature coating device, the specific steps are: S101, placing a plurality of resin lenses to be coated in fixed windows of a plurality of fixing tables, and fixing the lenses by using return springs on both sides of two clamping plates, so that a plurality of groups of lenses are fixed on a plurality of fixing tables; S102, multiple groups of lenses are distributed around the axis of the assembly roller. At this time, the sealing cover is closed to seal the working box, and then the external air pump of the device is started to form a vacuum in the working box. The fixed multiple lenses are placed at the bottom of the guide rail, and the coating spray gun is at the end of the first section of the guide rail and on the top of the first lens of the fixing table; S103, start the coating spray gun to coat the first lens, and after completion, start the servo motor to drive the coating spray gun to move along the guide rail to the top of the next lens, and complete the coating in sequence until one side of the fixed lens is completely coated; S104, start the telescopic cylinder to drive the top moving roller and the assembly roller to move downward. During the downward movement of the assembly roller, multiple tooth plates in the mounting grooves around it are able to contact and mesh with the semi-toothed ring of the mounting seat. As the tooth plates continue to move downward, the mounting seat starts to rotate around the axis of the semi-toothed ring, and at the same time, the fixed platform at the other end of the mounting seat and the multiple lenses on the fixed platform are driven to rotate around the axis of the semi-toothed ring. Finally, the fixed platform rotates to a state perpendicular to the horizontal plane, and at this moment, the multiple lenses are also in a state perpendicular to the horizontal plane. S105, start the servo motor to drive the coating spray gun to continue moving along the guide rail and enter the second section of the guide rail, so that the output end of the coating spray gun can be directed to the other side of the multiple lenses that have not been coated, and the coating process of the multiple lenses is completed in sequence under the drive of the servo motor. After the coating of both sides of the multiple resin lenses is completed, the working box is cooled down by the cooling nozzle of the closed cover.

[0015] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects: The coating device in the present invention can simultaneously position and change the mirror orientation of multiple resin lenses, and realize coating on both sides of multiple resin lenses, thereby improving production efficiency. By setting multiple support rods, fixed windows, clamping plates and other components, multiple groups of lenses can be stably fixed to ensure that they do not move or shake during the coating process, thereby ensuring the accuracy and consistency of the coating. The mounting seat, moving rollers, guide rails, servo motors and other components in the device enable the coating spray gun to cooperate with the moving lenses to coat both sides, thereby improving the accuracy and controllability of the coating. By using automation equipment such as telescopic cylinders, moving rollers, and servo motors, the automated operations of lens positioning, lens orientation change, and coating spray gun movement are realized, thereby reducing manual intervention and improving production efficiency and product quality. The device can perform low-temperature treatment after coating to avoid deformation or distortion of the resin lens caused by high temperature, thereby ensuring the quality and stability of the product. The low-temperature coating device and its coating process have obvious advantages in improving production efficiency, ensuring product quality, and improving the degree of automation, and have important application prospects in the field of HUD resin lens coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the working box of the present invention; Figure 3 It is a schematic diagram of the assembly structure of the cooling nozzle and the closing plate of the present invention; Figure 4 It is a schematic diagram of the assembly structure of the fixing component and the control component of the present invention; Figure 5 It is a schematic diagram of the structure of the coating assembly of the present invention; Figure 6 The present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 It is a schematic diagram of the assembly structure of the assembly roller and the fixing assembly of the present invention; Figure 8 It is a schematic diagram of the fixed platform structure of the present invention; Fig. 9 It is a schematic diagram of the connection structure between the assembly roller and the assembly ring of the present invention; Fig.10 The present invention Fig. 9 The enlarged structural diagram at B in the middle; Fig.11 It is a schematic diagram of the fixed platform structure of the present invention.

[0018] In the figure: 1. Working box; 101. Observation window; 102. Closing cover; 103. Cooling nozzle; 2. Fixing assembly; 201. First support rod; 202. Mounting platform; 203. Diagonal support rod; 204. Support roller; 205. Fixing frame; 206. Assembly ring; 207. Mounting seat; 208. Half gear ring; 209. Fixing platform; 210. Fixing window; 211. Sliding rod; 212. Clamping plate; 213 , return spring; 214, fixed cylinder; 3, control component; 301, telescopic cylinder; 302, moving roller; 303, assembly roller; 304, mounting groove; 305, tooth plate; 4, coating component; 401, second support rod; 402, guide rail; 403, teeth; 404, sliding window; 405, moving rod; 406, gear; 407, servo motor; 408, guide seat; 409, coating spray gun. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0020] See also Figure 1-Figure 11 The present invention provides a low-temperature coating device for HUD resin lenses, including a working box 1, wherein a fixing component 2 for simultaneously positioning a plurality of resin lenses is arranged inside the working box 1, the fixing component 2 is fixedly connected to the bottom of the inner cavity of the working box 1, a control component 3 for simultaneously changing the mirror orientations of a plurality of lenses is arranged inside the working box 1, the control component 3 is fixedly connected to the bottom of the inner cavity of the working box 1, the fixing component 2 is distributed around the control component 3, a coating component 4 for cooperating with the control component 3 to realize coating on both sides of a plurality of resin lenses is arranged around the fixing component 2, a plurality of transparent observation windows 101 are fixedly connected around the working box 1, the plurality of observation windows 101 are evenly distributed around the axis of the working box 1, a closing cover 102 is hingedly connected to one side of the top of the working box 1, a plurality of cooling nozzles 103 for cooling the air in the working box 1 are installed at the bottom of the closing cover 102, and the HUD resin lenses are usually made of special resin materials, and are quickly subjected to low-temperature treatment after coating to avoid deformation or distortion of the resin lenses due to high temperature.

[0021] In order to stabilize the multiple lenses in advance, a plurality of first support rods 201 are arranged in the fixing assembly 2, the bottom of the first support rod 201 is fixedly connected to the bottom of the inner cavity of the working box 1, the plurality of first support rods 201 are evenly distributed around the axis of the working box 1, the top of the first support rod 201 is fixedly connected to a mounting table 202, the top of the mounting table 202 is fixedly connected to a plurality of diagonal support rods 203, the top of the diagonal support rods 203 is fixedly connected to a supporting roller 204, a plurality of diagonal support rods 203 are fixedly connected to a fixing frame 205 on one side close to the axis of the working box 1, an assembly ring 206 is fixedly connected to the top of the fixing frame 205, the assembly ring 206 and the mounting table 202 coincide with the axis of the working box 1, a plurality of fixed windows 210 are opened on the surface of the fixing table 209, the plurality of fixed windows 210 are evenly distributed along the length direction of the fixing table 209, sliding rods 211 are fixedly connected to both sides of the inner wall of the fixing window 210, and the sliding rods 211 on both sides Symmetrically distributed along the axis of the fixed window 210, the surfaces of the two sliding rods 211 are sleeved with clamping plates 212, the clamping plates 212 are slidably connected to the sliding rods 211, and the two sides of the clamping plates 212 are slidably connected to the inner wall of the fixed window 210, and the end surfaces of the two clamping plates 212 that are away from each other are provided with return springs 213, and the return springs 213 are respectively sleeved on the surfaces of the two sliding rods 211, one end of the return spring 213 is in contact with the clamping plate 212, and the other end surface of the return spring 213 is sleeved with a fixed cylinder 214, and one end of the fixed cylinder 214 away from the clamping plate 212 is fixedly connected to the inner wall of the fixed window 210, multiple resin lenses that need to be coated are placed in the fixed windows 210 of multiple fixed tables 209, and the return springs 213 on both sides of the two clamping plates 212 are used to fix the lenses, so that multiple groups of lenses are fixed on multiple fixed tables 209 and distributed around the axis of the assembly roller 303, which is convenient for subsequent coating treatment.

[0022] In order to allow the multiple lenses to change their orientations so as to be coated on both sides, multiple mounting seats 207 are sleeved on the surface of the mounting ring 206, and the mounting seats 207 are rotatably connected to the mounting ring 206. The multiple mounting seats 207 are evenly distributed around the axis of the mounting ring 206. A half-toothed ring 208 is fixedly connected to the side of the mounting seat 207 close to the axis of the working box 1, and a fixed platform 209 is fixedly connected to the end of the mounting seat 207 away from the axis of the working box 1. The bottom of the fixed platform 209 contacts the support roller 204. The control component 3 includes a telescopic cylinder 30 1, the telescopic cylinder 301 is placed in the working box 1, and the bottom of the telescopic cylinder 301 is fixedly connected to the bottom of the inner cavity of the working box 1, the output end of the telescopic cylinder 301 is fixedly connected to a moving roller 302, the end of the moving roller 302 away from the telescopic cylinder 301 passes through the mounting platform 202 and extends to the top, the moving roller 302 is slidably connected to the mounting platform 202, the top of the moving roller 302 is fixedly connected to an assembly roller 303, the axis of the assembly roller 303, the telescopic cylinder 301 and the working box 1 coincide, the assembly roller 303 is placed between a plurality of fixed platforms 209, and the assembly roller 303 The outer surface of the assembly roller 303 is slidably connected with the inner wall of the assembly ring 206. A plurality of mounting grooves 304 matching the mounting seat 207 are formed around the assembly roller 303. The plurality of mounting grooves 304 are evenly distributed around the axis of the assembly roller 303. A tooth plate 305 matching the semi-toothed ring 208 is fixedly connected to the bottom of the inner cavity of the mounting groove 304. The assembly roller 303 is meshed and connected with the semi-toothed ring 208 through the tooth plate 305. The telescopic cylinder 301 is started to drive the top moving roller 302 and the assembly roller 303 to move downward. During the downward movement of the assembly roller 303, the mounting grooves 304 around it are The multiple tooth plates 305 in 4 are able to contact and mesh with the half tooth ring 208 of the mounting seat 207. As the tooth plates 305 continue to move downward, the mounting seat 207 begins to rotate around the axis of the half tooth ring 208, and at the same time, the fixed platform 209 at the other end of the mounting seat 207 and the multiple lenses on the fixed platform 209 are driven to rotate around the axis of the half tooth ring 208. Finally, the fixed platform 209 rotates to a state perpendicular to the horizontal plane. At this moment, the multiple lenses are also in a state perpendicular to the horizontal plane, realizing the change of the orientation of the multiple groups of lenses, and cooperating with the coating assembly 4 to perform double-sided coating.

[0023] In order to enable the coating spray gun 409 to cooperate with the moving lens to coat both sides, a plurality of second support rods 401 are arranged in the coating assembly 4. The bottom of the second support rod 401 is fixedly connected to the bottom of the inner cavity of the working box 1. The plurality of second support rods 401 are evenly distributed around the axis of the assembly roller 303. The top of the support rod is fixedly connected to a guide rail 402. The guide rail 402 is divided into two sections and is perpendicular to each other. One end of the guide rail 402 is parallel to the table surface of the fixed table 209, and the other end of the guide rail 402 is parallel to the axis of the assembly roller 303. The inner wall of the guide rail 402 is fixedly connected to A plurality of evenly distributed teeth 403 are provided, a sliding window 404 is provided on one side of the guide rail 402 close to the fixed platform 209, a moving rod 405 is built in the guide rail 402, a gear 406 matching with the moving rod 405 is sleeved on one end of the moving rod 405 close to the teeth 403, the gear 406 is fixedly connected to the moving rod 405, the guide rail 402 is meshed with the gear 406 through the teeth 403, a servo motor 407 is provided on one end of the moving rod 405 away from the gear 406, the output end of the servo motor 407 is fixedly connected to the moving rod 405, the servo motor A guide seat 408 is sleeved on the surface of 407, and the guide seat 408 is fixedly connected to the servo motor 407. The guide seat 408 is square, and the upper and lower sides of the guide seat 408 are slidably connected to the inner wall of the guide rail 402. A coating spray gun 409 is installed on the side of the guide seat 408 close to the connecting window. The fixed multiple lenses are placed at the bottom of the guide rail 402. At the same time, the coating spray gun 409 is at the end of the first section of the guide rail 402 and on the top of the first lens of the fixed platform 209. The coating spray gun 409 is started to coat the first lens. After completion, the servo motor 407 is started. 07 drives the coating spray gun 409 to move along the guide rail 402 to the top of the next lens, and completes the coating in sequence until one side of the lens on the fixed platform 209 is coated. After that, after multiple lenses have completed the direction change under the drive of the control component 3, the servo motor 407 can be started to drive the coating spray gun 409 to continue to move along the guide rail 402 and enter the second section of the guide rail 402. The output end of the coating spray gun 409 is able to face the other side of the multiple lenses that have not been coated, and the coating process of the multiple lenses is completed in sequence under the drive of the servo motor 407.

[0024] How it works In actual use, multiple resin lenses that need to be coated are placed in the fixed windows 210 of multiple fixed platforms 209, and the lenses are fixed by using the return springs 213 on both sides of the two clamping plates 212, so that multiple groups of lenses are fixed on multiple fixed platforms 209 and distributed around the axis of the assembly roller 303. The working box 1 is closed by using the closing cover 102, and the external air pump of the device is started to form a vacuum in the working box 1. At this time, the fixed multiple lenses are placed at the bottom of the guide rail 402, and the coating spray gun 409 is at the end of the first section of the guide rail 402 at the fixed platform 209. The coating spray gun 409 is started to coat the first lens. After completion, the servo motor 407 is started to drive the coating spray gun 409 to move along the guide rail 402 to the top of the next lens, and the coating is completed in sequence until one side of the lens of the fixed platform 209 is coated. After that, the telescopic cylinder 301 can be started to drive the top moving roller 302 and the assembly roller 303 to move downward. During the downward movement of the assembly roller 303, the multiple tooth plates 305 in the mounting grooves 304 around it are able to contact and mesh with the half tooth ring 208 of the mounting seat 207. As the tooth plates 30 5 continuously moves downward, so that the mounting seat 207 starts to rotate around the axis of the semi-toothed ring 208, and at the same time drives the fixed platform 209 at the other end of the mounting seat 207 and the multiple lenses on the fixed platform 209 to rotate around the axis of the semi-toothed ring 208. Finally, the fixed platform 209 rotates to a state perpendicular to the horizontal plane. At this moment, the multiple lenses are also in a state perpendicular to the horizontal plane. Then, the servo motor 407 can be started to drive the coating spray gun 409 to continue to move along the guide rail 402 and enter the second section of the guide rail 402. The output end of the coating spray gun 409 can be directed to the other side of the multiple lenses that are not coated. On one side, and driven by the servo motor 407, the coating treatment of multiple lenses is completed in sequence. After the coating is completed on both sides of multiple resin lenses, the cooling treatment is performed on the working box 1 through the cooling nozzle 103 of the closing cover 102. The whole process adopts automated equipment and control system, which reduces the labor cost and the possibility of operational errors. Through continuous operation, the coating treatment of multiple resin lenses can be completed quickly and effectively, thereby improving production efficiency. The equipment design is capable of processing multiple lenses and can perform coating treatment on both sides separately, thereby improving the versatility and applicability of the equipment.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low temperature coating device for HUD resin lenses, characterized in that: The invention comprises a working box (1), wherein a fixing component (2) for simultaneously positioning a plurality of resin lenses is arranged inside the working box (1), wherein the fixing component (2) is fixedly connected to the bottom of the inner cavity of the working box (1), wherein a control component (3) for simultaneously changing the mirror orientation of a plurality of lenses is arranged inside the working box (1), wherein the control component (3) is fixedly connected to the bottom of the inner cavity of the working box (1), wherein the fixing component (2) is distributed around the control component (3), wherein a coating component (4) for cooperating with the control component (3) to realize coating of both sides of a plurality of resin lenses is arranged around the fixing component (2), wherein a plurality of transparent observation windows (101) are fixedly connected around the working box (1), wherein the plurality of observation windows (101) are evenly distributed around the axis of the working box (1), and a closing cover (102) is hingedly connected to one side of the top of the working box (1), wherein a plurality of cooling nozzles (103) are installed at the bottom of the closing cover (102).

2. The low temperature coating device for HUD resin lenses according to claim 1, characterized in that: The fixing assembly (2) comprises a plurality of first support rods (201), the bottom of the first support rods (201) being fixedly connected to the bottom of the inner cavity of the working box (1), the plurality of first support rods (201) being evenly distributed around the axis of the working box (1), the top of the first support rods (201) being fixedly connected to a mounting platform (202), the top of the mounting platform (202) being fixedly connected to a plurality of diagonal support rods (203), the top of the diagonal support rods (203) being fixedly connected to a support roller (204), and the plurality of diagonal support rods (203) being fixedly connected to a fixing frame (205) on one side close to the axis of the working box (1).

3. The low temperature coating device for HUD resin lenses according to claim 2, characterized in that: The top of the fixed frame (205) is fixedly connected to an assembly ring (206); the assembly ring (206), the mounting platform (202) and the axis of the working box (1) coincide with each other; a plurality of mounting seats (207) are sleeved on the surface of the assembly ring (206); the mounting seats (207) are rotatably connected to the assembly ring (206); the plurality of mounting seats (207) are evenly distributed around the axis of the assembly ring (206); a half-toothed ring (208) is fixedly connected to one side of the mounting seat (207) close to the axis of the working box (1); an end of the mounting seat (207) away from the axis of the working box (1) is fixedly connected to a fixing platform (209); the bottom of the fixing platform (209) is in contact with the support roller (204).

4. The low temperature coating device for HUD resin lenses according to claim 3, characterized in that: The surface of the fixed platform (209) is provided with a plurality of fixed windows (210) penetrating the fixed platform (209), and the plurality of fixed windows (210) are evenly distributed along the length direction of the fixed platform (209). Sliding rods (211) are fixedly connected to the inner walls of the fixed windows (210) on both sides, and the sliding rods (211) on both sides are symmetrically distributed along the axis of the fixed windows (210), and clamping plates (212) are sleeved on the surfaces of the two sliding rods (211).

5. The low temperature coating device for HUD resin lenses according to claim 4, characterized in that: The clamping plate (212) is slidably connected to the sliding rod (211), and both sides of the clamping plate (212) are slidably connected to the inner wall of the fixed window (210). The end surfaces of the two clamping plates (212) that are away from each other are provided with return springs (213), and the return springs (213) are respectively sleeved on the surfaces of the two sliding rods (211). One end of the return spring (213) is in contact with the clamping plate (212), and the other end surface of the return spring (213) is sleeved with a fixed tube (214), and the end of the fixed tube (214) away from the clamping plate (212) is fixedly connected to the inner wall of the fixed window (210).

6. The low temperature coating device for HUD resin lenses according to claim 1, characterized in that: The control component (3) comprises a telescopic cylinder (301), the telescopic cylinder (301) being placed in the working box (1), and the bottom of the telescopic cylinder (301) being fixedly connected to the bottom of the inner cavity of the working box (1), the output end of the telescopic cylinder (301) being fixedly connected to a moving roller (302), one end of the moving roller (302) away from the telescopic cylinder (301) passing through the mounting platform (202) and extending to the top, and the moving roller (302) being slidably connected to the mounting platform (202).

7. The low temperature coating device for HUD resin lenses according to claim 6, characterized in that: The top of the moving roller (302) is fixedly connected to an assembly roller (303), the axes of the assembly roller (303), the telescopic cylinder (301) and the working box (1) coincide with each other, the assembly roller (303) is placed between a plurality of fixed platforms (209), the outer surface of the assembly roller (303) is slidably connected to the inner wall of the assembly ring (206), a plurality of mounting grooves (304) matching the mounting seat (207) are formed around the assembly roller (303), the plurality of mounting grooves (304) are evenly distributed around the axis of the assembly roller (303), a tooth plate (305) matching the semi-tooth ring (208) is fixedly connected to the bottom of the inner cavity of the installation groove (304), and the assembly roller (303) is meshedly connected to the semi-tooth ring (208) via the tooth plate (305).

8. The low temperature coating device for HUD resin lenses according to claim 1, characterized in that: The coating assembly (4) comprises a plurality of second support rods (401), the bottom of the second support rods (401) being fixedly connected to the bottom of the inner cavity of the working box (1), the plurality of second support rods (401) being evenly distributed around the axis of the assembly roller (303), the top of the support rod being fixedly connected to a guide rail (402), the guide rail (402) being divided into two sections and being perpendicular to each other, one section of the guide rail (402) being parallel to the surface of the fixed table (209), and the other end of the guide rail (402) being parallel to the axis of the assembly roller (303), the inner wall of the guide rail (402) being fixedly connected to a plurality of evenly distributed teeth (403), and a sliding window (404) penetrating the guide rail (402) is provided on a side of the guide rail (402) close to the fixed table (209).

9. The low temperature coating device for HUD resin lenses according to claim 8, characterized in that: The guide rail (402) has a built-in moving rod (405), and one end of the moving rod (405) close to the teeth (403) is sleeved with a gear (406) matching therewith, and the gear (406) is fixedly connected to the moving rod (405), and the guide rail (402) is meshed with the gear (406) through the teeth (403). A servo motor (407) is provided at one end of the moving rod (405) away from the gear (406), and the output end of the servo motor (407) is fixedly connected to the moving rod (405). A guide seat (408) is sleeved on the surface of the servo motor (407), and the guide seat (408) is fixedly connected to the servo motor (407). The guide seat (408) is square in shape, and the upper and lower sides of the guide seat (408) are slidably connected to the inner wall of the guide rail (402), and a coating spray gun (409) is installed on the side of the guide seat (408) close to the connecting window.

10. The coating process of the HUD resin lens low-temperature coating device according to any one of claims 1 to 9, characterized in that: The specific steps are: S101, placing a plurality of resin lenses to be coated in the fixed windows (210) of a plurality of fixed platforms (209), and fixing the lenses using return springs (213) on both sides of two clamping plates (212), so that a plurality of groups of lenses are fixed on the plurality of fixed platforms (209); S102, multiple groups of lenses are distributed around the axis of the assembly roller (303), and the sealing cover (102) is closed to seal the working box (1), and then the external air pump of the device is started to form a vacuum in the working box (1), and the multiple fixed lenses are placed at the bottom of the guide rail (402), and the coating spray gun (409) is at the end of the first section of the guide rail (402) and at the top of the first lens of the fixing table (209); S103, start the coating spray gun (409) to coat the first lens, and after completion, start the servo motor (407) to drive the coating spray gun (409) to move along the guide rail (402) to the top of the next lens, and complete the coating in sequence until one side of the lens on the fixed platform (209) is completely coated; S104, starting the telescopic cylinder (301) to drive the top moving roller (302) and the assembly roller (303) to move downward. During the downward movement of the assembly roller (303), the plurality of tooth plates (305) in the mounting grooves (304) around the assembly roller (303) are able to contact and mesh with the semi-toothed ring (208) of the mounting seat (207). As the tooth plates (305) continue to move downward, the mounting seat (207) begins to rotate around the axis of the semi-toothed ring (208), and at the same time, the fixed platform (209) at the other end of the mounting seat (207) and the plurality of lenses on the fixed platform (209) are driven to rotate around the axis of the semi-toothed ring (208). Finally, the fixed platform (209) rotates to a state perpendicular to the horizontal plane, and at this moment, the plurality of lenses are also in a state perpendicular to the horizontal plane. S105, starting the servo motor (407) to drive the coating spray gun (409) to continue to move along the guide rail (402) and enter the second section of the guide rail (402), so that the output end of the coating spray gun (409) is directed to the other side of the plurality of lenses that have not been coated, and the coating process of the plurality of lenses is completed in sequence under the drive of the servo motor (407). After the coating of both sides of the plurality of resin lenses is completed, the working box (1) is cooled by the cooling nozzle (103) of the closing cover (102).

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