A drying device for producing polarizer

Abstract

The present invention discloses a drying device for polarizer production, which belongs to the technical field of polarizer drying treatment. The drying device for polarizer production includes a drying box, an opening is provided through the back of the drying box, a plurality of mounting plates are fixedly connected inside the drying box, heating tubes are installed between the mounting plates, heating boxes are installed on both sides of the mounting plates, and the heating boxes are connected to the drying box, and a quick drying mechanism is arranged inside the drying box. The present invention adopts a quick drying mechanism, and through the coordination of revolution and rotation, the heat received by the polarizer comes from multiple directions, thereby avoiding the risk of deformation caused by heating in a single direction. At the same time, the dynamic winding method can reduce the mechanical stress received by the polarizer during the heating process, reduce the possibility of its deformation, and the circulation of hot air can effectively increase the drying speed, can quickly remove moisture on the surface of the polarizer, and reduce the drying time.

Description

Technical Field

[0001] The invention belongs to the technical field of polarizer drying treatment, and in particular relates to a drying device for polarizer production. Background Art

[0002] Polarizer is an optical material that only allows light waves in a certain direction to pass through. It can filter out unnecessary light and achieve the polarization effect of light. In the production process of polarizer, coating is a key step. Usually a layer of pressure-sensitive adhesive is coated on the surface of the polarizing film. This adhesive layer can make the polarizer better bonded to the protective film or other layered materials. However, the pressure-sensitive adhesive usually contains a certain amount of moisture or solvent after coating. This moisture must be removed through the drying process to ensure the final quality of the polarizer. Therefore, drying the polarizer helps to ensure the quality, performance and long-term stability of the polarizer.

[0003] In the prior art, after the polarizer is coated, the moisture of the pressure-sensitive adhesive on the polarizer needs to be dried, and the existing polarizer drying device often uses a drying box to dry it, and the hot air in the drying box is usually static or partially circulated, resulting in uneven heat distribution on the surface of the polarizer. In particular, when multiple polarizers are stacked in the drying box, the mutual shielding between the polarizers may cause some polarizers to dry slowly, thereby affecting the overall drying effect. Some polarizers may become locally overheated or humid, thereby affecting their quality. In addition, traditional drying boxes rely on hot air or hot wind to heat and evaporate moisture from the polarizer. This process is usually slow, especially in large-scale production. Long drying time will lead to low production efficiency. In some cases, due to the lack of an effective air circulation system, the moisture on the surface of the polarizer cannot evaporate in time, resulting in a delay in the drying process. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a drying device for producing polarizers.

[0005] The technical solution adopted to solve the above technical problems is: a drying device for polarizer production, comprising a drying box, an opening is opened through the back of the drying box, a plurality of mounting plates are fixedly connected inside the drying box, heating tubes are installed between the mounting plates, heating boxes are installed on both sides of the mounting plates, and the heating boxes are connected with the drying box, and a quick drying mechanism is arranged inside the drying box;

[0006] The quick drying mechanism includes two rotating frames, which are respectively rotatably connected to the inner wall of the drying box, a main gear is rotatably connected to the center of the rotating frame away from the drying box, sub gears are transmission-connected on both sides of the main gear, the sub gears are rotatably connected to the rotating frame, the top and bottom of the sub gears are transmission-connected with driven gears, the driven gears are rotatably connected to the rotating frame, a fixing seat is fixedly connected to the driven gear and the main gear at the center of the side away from the rotating frame, and the interior of the fixing seat is arranged in a cross-shaped structure.

[0007] Through the above technical solution, uniform and rapid drying can reduce deformation, warping, surface defects and other problems of the polarizer caused by uneven heating or excessive drying, thereby improving the product qualification rate and reliability. Avoiding excessive temperature or humidity during the drying process helps to protect the material properties of the polarizer and avoid cracks or other damage.

[0008] Furthermore, a plurality of rollers are arranged between the fixed seats, a spring rod is fixedly connected between each of the rollers, a spline is fixedly connected to one end of the roller away from the spring rod, the spline is located inside the fixed seat, and the spline is engaged with the fixed seat, a polarizer film is wound between the plurality of rollers and the spring rod, and the polarizer film between the driven gear and the main gear is alternately wound and connected.

[0009] Through the above technical solution, the hot air generated by the heating tube is continuously fed into the drying device. Through the winding method of the revolution and rotation mechanism, the hot air can be effectively circulated and diffused to avoid local overheating or uneven heat distribution. This can ensure the consistency of the surface and internal temperature of the polarizer during the drying process, which helps to ensure that the physical properties of the polarizer are not affected by uneven drying.

[0010] Furthermore, a worm gear is rotatably connected to one side of the drying box body, the worm gear connecting shaft is rotatably connected to the drying box body through the worm gear connecting shaft, the through end of the worm gear connecting shaft is rotatably connected to the rotating frame through the worm gear connecting shaft, and the through end of the worm gear connecting shaft is fixedly connected to the main gear, the bottom of the worm gear is transmission-connected with a worm, the worm is rotatably connected to the drying box body, a motor is installed on one side of the drying box body, the output end of the motor is rotatably connected to the drying box body through the worm gear connecting shaft, and the through end of the motor is fixedly connected to the worm gear.

[0011] Through the above technical solution, the revolution and rotation winding mechanism is combined with hot air circulation, with a high degree of automation. This design can reduce human intervention, making the entire drying process more stable and controllable, reducing the impact of human operational errors on product quality and improving production efficiency.

[0012] Furthermore, a first synchronous belt assembly and a second synchronous belt assembly are provided on both sides of the drying box body, a synchronous wheel in the first synchronous belt assembly is fixedly connected to the worm gear, and another synchronous wheel in the first synchronous belt assembly is located at the top of the drying box body and is rotatably connected to the drying box body, a synchronous wheel connecting shaft in the second synchronous belt assembly passes through and is rotatably connected to the drying box body, and a synchronous wheel connecting shaft in the second synchronous belt assembly is fixedly connected to the rotating frame at a passing end, another synchronous wheel in the second synchronous belt assembly is located at the top of the drying box body and is rotatably connected to the drying box body, a connecting rod passes through and is rotatably connected to the top of the drying box body, and two passing ends of the connecting rod are respectively fixedly connected to the synchronous wheels at the tops of the first synchronous belt assembly and the second synchronous belt assembly.

[0013] Through the above technical solution, the combination of rotation and revolution enables the polarizer to continuously change its posture in hot air, which can prevent a certain part from being exposed to a strong heat source for a long time, thereby reducing the risk of local overheating or thermal damage.

[0014] Furthermore, a third synchronous belt assembly is provided on the top of the drying box body, and the third synchronous belt assembly is provided in a triangular structure. The connecting rod is fixedly connected to a synchronous wheel in the third synchronous belt assembly through and through, and the other two synchronous wheels in the third synchronous belt assembly are rotatably connected to the drying box body and the heating box body respectively. An air inlet is provided on the top of the heating box body, and a fan wheel is provided inside the air inlet. The fan wheel is rotatably connected to the heating box body, and one end of the fan wheel is rotatably connected to the heating box body through and through, and the through end of the fan wheel is fixedly connected to a synchronous wheel in the third synchronous belt assembly. A through opening is provided inside the heating box body, and the air inlet is connected to the through opening.

[0015] Through the above technical solution, the polarizer can maintain a relatively stable movement state during the entire drying process, reducing the problem of unstable drying caused by uneven movement. This stable drying process helps to maintain product consistency, improve production stability and controllability, and ensure consistent quality of each batch of polarizers.

[0016] Furthermore, a plurality of fan blades are provided inside the opening, and the fan blades are rotatably connected to the inner wall of the drying box, and the fan blades are located on one side of the heating tube, and a chain assembly is rotatably connected to one side of the drying box, and a plurality of sprocket connecting shafts in the chain assembly are rotatably connected to the drying box, and the through ends of the plurality of sprocket connecting shafts in the chain assembly are respectively fixedly connected to the plurality of fan blades, and the through end of the sprocket located at the top of the chain assembly is fixedly connected to a synchronous wheel in the third synchronous belt assembly.

[0017] Furthermore, two door panels are hinged on the front side of the drying box, and the two door panels are arranged opposite to each other. A display screen is installed on the top of the front side of the door panel, and a handle is welded on the front side of the door panel, and the handle is located at the bottom of the display screen. A number of feet are installed at the corners of the bottom surface of the drying box, and a number of air outlets are opened through the back of the drying box.

[0018] Through the above technical solution, the movement of hot air circulation helps to maintain the continuous flow of hot air, making the air temperature in the drying channel more balanced. Under the mechanism of revolution and rotation, the position of the polarizer changes continuously, avoiding uneven drying caused by local poor air flow or heat retention, thereby further improving the drying effect.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) The present invention is driven by a motor, and under the joint action of the first synchronous belt assembly and the connecting rod, the worm gear and the synchronous wheel at the bottom of the second synchronous belt assembly rotate simultaneously, so that the roller shaft on the side of the driven gear revolves around the origin of the main gear and rotates on its own, so that the polarizer film on the roller shaft on the side of the driven gear is gradually superimposed on the empty rod roller shaft on the side of the main gear. At the same time, under the circulation of hot air, the polarizer film is gradually superimposed on the empty rod roller shaft on the side of the main gear while revolving and rotating to be dried. The hot air can be effectively circulated and diffused, avoiding the problem of local overheating or uneven heat distribution. In addition, the consistency of the surface and internal temperature of the polarizer during the drying process is ensured, which helps to ensure that the physical properties of the polarizer are not affected by uneven drying.

[0021] (2) The present invention drives the worm to rotate through a motor, so that the worm wheel rotates, thereby causing the first synchronous belt assembly to transmit. Under the action of the connecting rod, the second synchronous belt assembly and the third synchronous belt assembly are driven to transmit synchronously. The second synchronous belt assembly drives the fan wheel to rotate. At the same time, the second synchronous belt assembly drives the chain assembly on one side to transmit, so that the fan wheel and the fan blades rotate at the same time, so that the external space passes through the air inlet at the top of the heating box body and enters the heating box body through the through hole, and the hot air heated by the heating tube enters the drying box body, forming a hot air circulation movement. The circulation of hot air can effectively increase the drying speed, and by continuously sending hot air into the drying area formed between the drying box body and the heating box body, and exchanging heat with the surface of the polarizer film, it can quickly remove moisture on the surface of the polarizer and reduce the drying time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0023] Figure 2It is a schematic diagram of the internal structure of the heating box of the present invention;

[0024] Figure 3 is a schematic diagram of the structure of the present invention from a second viewing angle;

[0025] Figure 4 It is a third perspective structural schematic diagram of the present invention;

[0026] Figure 5 is a schematic diagram of the structure from a fourth viewing angle of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the drying box body of the present invention from a first viewing angle;

[0028] Figure 7 This is a schematic diagram of the structure of the drying box body of the present invention from a second viewing angle;

[0029] Figure 8 It is a schematic diagram of the polarizer film winding structure of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the connection between the roller shaft and the spring rod of the present invention.

[0031] Figure numerals: 1, drying box; 2, foot; 3, door panel; 4, handle; 5, display screen; 6, heating box; 7, air inlet; 8, air outlet; 9, opening; 10, heating tube; 11, mounting plate; 12, fan blade; 13, first synchronous belt assembly; 14, worm; 15, worm wheel; 16, motor; 17, connecting rod; 18, second synchronous belt assembly; 19, third synchronous belt assembly; 20, chain assembly; 21, fan wheel; 22, through-hole; 23, rotating frame; 24, main gear; 25, sub-gear; 26, driven gear; 27, fixed seat; 28, roller; 29, spline; 30, spring rod; 31, polarizer film. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] like Figure 1-Figure 3The drying device for producing polarizers of the present embodiment comprises a drying box 1, an opening 9 is provided through the back of the drying box 1, a plurality of mounting plates 11 are fixedly connected inside the drying box 1, heating tubes 10 are installed between the plurality of mounting plates 11, two door panels 3 are hingedly connected to the front of the drying box 1, the two door panels 3 are arranged opposite to each other, a display screen 5 is installed on the top of the front of the door panel 3, and a handle 4 is welded on the front of the door panel 3, the handle 4 is located at the bottom of the display screen 5, a plurality of feet 2 are installed at the corners of the bottom surface of the drying box 1, a plurality of air outlets 8 are provided through the back of the drying box 1, heating boxes 6 are installed on both sides of the mounting plates 11, uniform and rapid drying can reduce deformation, warping, surface defects and other problems of the polarizer caused by uneven heating or excessive drying, thereby improving the qualified rate and reliability of the product, avoiding excessive temperature or excessive humidity during the drying process, which is helpful to protect the material properties of the polarizer and avoid cracks or other damages, and the heating box 6 is connected with the drying box 1, and a rapid drying mechanism is arranged inside the drying box 1.

[0034] like Figure 2-Figure 5 The quick drying mechanism includes two rotating frames 23, a worm gear 15 is rotatably connected to one side of the drying box 1, the connecting shaft of the worm gear 15 penetrates and rotates with the drying box 1, and the connecting shaft of the worm gear 15 penetrates and rotates with the rotating frame 23. A first synchronous belt assembly 13 and a second synchronous belt assembly 18 are arranged on both sides of the drying box 1. The hot air generated by the heating tube 10 is continuously fed into the drying device. Through the winding method of the revolution and rotation mechanism, the hot air can be effectively circulated and diffused to avoid local overheating or uneven heat distribution. In this way, the consistency of the surface and internal temperature of the polarizer during the drying process can be ensured, which helps to ensure that the physical properties of the polarizer are not affected by uneven drying. A synchronous wheel in the first synchronous belt assembly 13 is fixedly connected to the worm gear 15, and another synchronous wheel in the first synchronous belt assembly 13 is located at the top of the drying box 1 and is rotatably connected to the drying box 1.

[0035] A synchronous wheel connecting shaft in the second synchronous belt assembly 1 is rotatably connected to the drying box body 1, and the through end of a synchronous wheel connecting shaft in the second synchronous belt assembly 18 is fixedly connected to the rotating frame 23. Another synchronous wheel in the second synchronous belt assembly 18 is located at the top of the drying box body 1 and is rotatably connected to the drying box body 1. A connecting rod 17 is rotatably connected to the top of the drying box body 1. A third synchronous belt assembly 19 is arranged on the top of the drying box body 1. The third synchronous belt assembly 19 is arranged in a triangular structure. The connecting rod 17 is fixedly connected to a synchronous wheel in the third synchronous belt assembly 19 through and through.

[0036] The other two synchronous wheels in the third synchronous belt assembly 19 are rotatably connected to the drying box body 1 and the heating box body 6 respectively. An air inlet 7 is opened on the top of the heating box body 6. A fan wheel 21 is arranged inside the air inlet 7. The fan wheel 21 is rotatably connected to the heating box body 6, and one end of the fan wheel 21 is rotatably connected to the heating box body 6 through the through end of the fan wheel 21 is fixedly connected to a synchronous wheel in the third synchronous belt assembly 19. A plurality of fan blades 12 are arranged inside the opening 9. The fan blades 12 are rotatably connected to the inner wall of the drying box body 1, and the fan blades 12 are located on one side of the heating tube 10, so that the polarizer maintains a relatively stable motion state during the entire drying process, reducing the problem of unstable drying caused by uneven movement.

[0037] This stable drying process helps to maintain product consistency, improve production stability and controllability, and ensure consistent quality of each batch of polarizers. A chain assembly 20 is rotatably connected to one side of the drying box 1. Several sprocket connecting shafts in the chain assembly 20 are rotatably connected to the drying box 1. The through ends of several sprocket connecting shafts in the chain assembly 20 are respectively fixedly connected to several fan blades 12. The through end of the sprocket at the top of the chain assembly 20 is fixedly connected to a synchronous wheel in the third synchronous belt assembly 19. A through opening 22 is opened inside the heating box 6, and the air inlet 7 is connected to the through opening 22.

[0038] like Figure 4-Figure 9 As shown, the two through ends of the connecting rod 17 are fixedly connected to the synchronous wheels at the top of the first synchronous belt assembly 13 and the second synchronous belt assembly 18 respectively, and the through end of the worm wheel 15 connecting shaft is fixedly connected to the main gear 24, and the bottom of the worm wheel 15 is drivingly connected with a worm 14, and the worm 14 is rotatably connected to the drying box 1. A motor 16 is installed on one side of the drying box 1, and the output end of the motor 16 is rotatably connected to the drying box 1. The movement of the hot air circulation helps to maintain the continuous flow of hot air, so that the air temperature in the drying channel is more balanced. Under the action of the revolution and rotation mechanism, the position of the polarizer changes continuously, avoiding uneven drying caused by poor local air flow or heat retention, thereby further improving the drying effect, and the through end of the motor 16 is fixedly connected to the worm 14.

[0039] The two rotating frames 23 are respectively rotatably connected to the inner wall of the drying box body 1. The rotating frame 23 is rotatably connected to the center of the side away from the drying box body 1 with a main gear 24. The winding and reeling mechanism of revolution and rotation is combined with hot air circulation, and the degree of automation is high. This design can reduce human intervention, make the entire drying process more stable and controllable, reduce the impact of human operational errors on product quality, and improve production efficiency. The main gear 24 is transmission-connected on both sides with sub-gears 25, and the sub-gears 25 are rotationally connected to the rotating frame 23. The top and bottom of the sub-gear 25 are transmission-connected with driven gears 26, and the driven gear 26 is rotationally connected to the rotating frame 23.

[0040] A fixed seat 27 is fixedly connected to the center of the side of the driven gear 26 and the main gear 24 away from the rotating frame 23. A plurality of rollers 28 are arranged between the fixed seats 27. A spring rod 30 is fixedly connected between the plurality of rollers 28. A spline 29 is fixedly connected to one end of the roller 28 away from the spring rod 30. The spline 29 is located inside the fixed seat 27 and is engaged with the fixed seat 27. A polarizer film 31 is wound between the plurality of rollers 28 and the spring rod 30. The combination of rotation and revolution makes the polarizer constantly change its posture in the hot air, which can avoid a certain part from being exposed to a strong heat source for a long time, thereby reducing the risk of local overheating or heat damage. The polarizer film 31 between the driven gear 26 and the main gear 24 is alternately wound and connected, and the interior of the fixed seat 27 is arranged in a cross-shaped structure.

[0041] The working principle of this embodiment is as follows. First, by pulling the handle 4, the two door panels 3 are opened toward each other, and the stretched polarizer film 31 is wound on the roller 28. Then, the two ends of the roller 28 after extrusion and winding are moved toward each other under the action of the spring rod 30, and the two rollers 28 are engaged with the fixed seat 27 on the side of the driven gear 26 through the spline 29. Then, the roller 28 with an empty rod is engaged and fixed with the fixed seat 27 on the side of the main gear 24 through the spline 29. Then, the polarizer film 31 on the side of the driven gear 26 is alternately superimposed one by one on the roller 28 on the side of the main gear 24. After winding, a preliminary winding is formed.

[0042] Then close the door panel 3, operate the display screen 5, so that the motor 16 and the heating tube 10 are running at the same time, the heating tube 10 heats the air in the heating box 6, the operation of the motor 16 drives the worm 14 to rotate, so that the worm wheel 15 rotates, so that the first synchronous belt assembly 13 is driven, and under the action of the connecting rod 17, the second synchronous belt assembly 18 and the third synchronous belt assembly 19 are driven synchronously, and the second synchronous belt assembly 18 drives the fan wheel 21 to rotate, and at the same time, the second synchronous belt assembly 18 drives the chain assembly 20 on one side to rotate. The transmission is carried out so that the fan wheel 21 and the fan blades 12 rotate at the same time, so that the external space passes through the air inlet 7 at the top of the heating box 6 and enters the heating box 6 through the through hole 22, prompting the hot air heated by the heating tube 10 to enter the drying box 1 to dry the polarizer film 31. Since the hot air is heated and lightened by the heating tube 10, after entering the drying box 1, it will be at the top of the drying box 1, thereby squeezing the cold air downward and forcing the cold air to be discharged from the air outlet 8, thereby forming a hot air circulation movement.

[0043] The synchronous wheel at the bottom of the second synchronous belt assembly 18 rotates, driving the rotating frame 23 to rotate, so that the sub gears 25 on both sides of the main gear 24 rotate and move along the circumference of the main gear 24, and the driven gears 26 at the top and bottom of the sub gear 25 are stationary relative to the sub gear 25, and the worm gear 15 rotates to drive the main gear 24 to rotate, thereby causing the sub gears 25 on both sides to rotate, and then causing the driven gear 26 to rotate synchronously. Under the joint action of the worm gear 15 and the synchronous wheel at the bottom of the second synchronous belt assembly 18, the roller 28 on one side of the driven gear 26 rotates while revolving around the main gear 24 as the origin, so that the polarizer film 31 on the roller 28 on one side of the driven gear 26 is gradually superimposed on the empty rod roller 28 on one side of the main gear 24.

[0044] At the same time, as the hot air circulates, the polarizer film 31 is dried on the empty roller 28 on one side of the main gear 24 by gradually superimposing the revolution and rotation. This allows the hot air to cover every part of the polarizer film 31, thereby improving the uniformity of drying and avoiding product quality problems caused by uneven drying in certain areas.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A drying device for producing polarizers, comprising a drying box (1), characterized in that: The drying box (1) has an opening (9) extending through the back thereof, a plurality of mounting plates (11) are fixedly connected inside the drying box (1), heating tubes (10) are installed between each of the mounting plates (11), heating boxes (6) are installed on both sides of the mounting plates (11), and the heating boxes (6) are connected to the drying box (1), and a quick drying mechanism is provided inside the drying box (1); The quick drying mechanism comprises two rotating frames (23), the two rotating frames (23) being rotatably connected to the inner wall of the drying box (1) respectively; a main gear (24) is rotatably connected at the center of a side of the rotating frame (23) away from the drying box (1); sub gears (25) are transmission-connected on both sides of the main gear (24); the sub gears (25) are rotatably connected to the rotating frame (23); a driven gear (26) is transmission-connected at the top and bottom of the sub gear (25); the driven gear (26) is rotatably connected to the rotating frame (23); a fixed seat (27) is fixedly connected to the driven gear (26) and the main gear (24) at the center of a side away from the rotating frame (23); the fixed seat (27) is arranged in a cross-shaped structure. A worm gear (15) is rotatably connected to one side of the drying box (1); a connecting shaft of the worm gear (15) is rotatably connected to the drying box (1); a first synchronous belt assembly (13) and a second synchronous belt assembly (18) are provided on both sides of the drying box (1); a synchronous wheel in the first synchronous belt assembly (13) is fixedly connected to the worm gear (15); and a synchronous wheel connecting shaft in the second synchronous belt assembly (18) is rotatably connected to the drying box (1).

2. A drying device for producing polarizers according to claim 1, characterized in that: A plurality of rollers (28) are arranged between the plurality of fixed seats (27); a spring rod (30) is fixedly connected between the plurality of rollers (28); a spline (29) is fixedly connected to one end of the roller (28) away from the spring rod (30); the spline (29) is located inside the fixed seat (27), and the spline (29) is engaged with the fixed seat (27); a polarizer film (31) is wound between the plurality of rollers (28) and the spring rod (30); and the polarizer film (31) is alternately wound and connected between the driven gear (26) and the main gear (24).

3. The drying device for producing polarizer according to claim 1, characterized in that: The through end of the connecting shaft of the worm wheel (15) is through-connected and rotationally connected to the rotating frame (23), and the through end of the connecting shaft of the worm wheel (15) is fixedly connected to the main gear (24). The bottom of the worm wheel (15) is drivingly connected to a worm (14), and the worm (14) is rotationally connected to the drying box (1). A motor (16) is installed on one side of the drying box (1), and the output end of the motor (16) is through-connected and rotationally connected to the drying box (1), and the through end of the motor (16) is fixedly connected to the worm (14).

4. The drying device for producing polarizer according to claim 3, characterized in that: Another synchronous wheel in the first synchronous belt assembly (13) is located at the top of the drying box (1) and is rotatably connected to the drying box (1), and a synchronous wheel connecting shaft in the second synchronous belt assembly (18) is fixedly connected to the rotating frame (23) through its through end, and another synchronous wheel in the second synchronous belt assembly (18) is located at the top of the drying box (1) and is rotatably connected to the drying box (1), and a connecting rod (17) is rotatably connected through the top of the drying box (1), and two through ends of the connecting rod (17) are respectively fixedly connected to the synchronous wheels at the top of the first synchronous belt assembly (13) and the second synchronous belt assembly (18).

5. The drying device for producing polarizer according to claim 4, characterized in that: A third synchronous belt assembly (19) is arranged on the top of the drying box (1). The third synchronous belt assembly (19) is arranged in a triangular structure. The connecting rod (17) is fixedly connected to a synchronous wheel in the third synchronous belt assembly (19). The other two synchronous wheels in the third synchronous belt assembly (19) are rotatably connected to the drying box (1) and the heating box (6) respectively. An air inlet (7) is provided on the top of the heating box (6). A fan wheel (21) is arranged inside the air inlet (7). The fan wheel (21) is rotatably connected to the heating box (6), and one end of the fan wheel (21) is rotatably connected to the heating box (6). The through end of the fan wheel (21) is fixedly connected to a synchronous wheel in the third synchronous belt assembly (19). A through opening (22) is provided inside the heating box (6). The air inlet (7) is connected to the through opening (22).

6. A drying device for producing polarizers according to claim 5, characterized in that: A plurality of fan blades (12) are arranged inside the opening (9), the fan blades (12) are rotatably connected to the inner wall of the drying box (1), and the fan blades (12) are located on one side of the heating tube (10). A chain assembly (20) is rotatably connected to one side of the drying box (1), a plurality of sprocket connecting shafts in the chain assembly (20) are rotatably connected to the drying box (1), a plurality of sprocket connecting shafts in the chain assembly (20) are respectively fixedly connected to the plurality of fan blades (12), and a sprocket connecting shaft at the top of the chain assembly (20) is fixedly connected to a synchronous wheel in the third synchronous belt assembly (19).

7. The drying device for producing polarizer according to claim 1, characterized in that: The drying box body (1) is hingedly connected to two door panels (3) on the front side, the two door panels (3) are arranged opposite to each other, a display screen (5) is installed on the top of the front side of the door panel (3), and a handle (4) is welded on the front side of the door panel (3), the handle (4) is located at the bottom of the display screen (5), a plurality of feet (2) are installed at the corners of the bottom surface of the drying box body (1), and a plurality of air outlets (8) are opened through the back of the drying box body (1).

Images