A polaroid attaching device for a liquid crystal display screen of an intelligent wearable electronic product

Abstract

The application relates to the technical field of optical component assembling equipment, in particular to a polaroid attaching device for an intelligent wearable electronic product liquid crystal display screen, which comprises a device main body, a supporting platform is installed on the device main body, a loading table for loading the liquid crystal display screen is installed on the supporting platform, a mounting frame capable of lifting is arranged on the supporting platform, a multidirectional sliding groove is installed at the bottom of the mounting frame, a plurality of sliding blocks arranged along the radial direction of the multidirectional sliding groove are slidably arranged on the multidirectional sliding groove, the plurality of sliding blocks are distributed at equal angles in a circumferential direction, a clamping rod is respectively installed on each sliding block, a rotating seat is rotatably installed at the bottom of the multidirectional sliding groove, a cantilever is installed on the rotating seat, and an attaching roller for pressing the polaroid is rotatably installed on the cantilever; the single driving source cooperates with the transmission assembly to realize full-automatic sequential operation of automatically centering the circular polaroid and attaching the circular polaroid on the liquid crystal display screen, and effectively solve the problems of low precision, low efficiency and unstable yield of manual attachment.

Description

Technical Field

[0001] This invention relates to the field of assembly equipment technology for optical components, specifically a polarizer attachment device for the liquid crystal display screen of a smart wearable electronic product. Background Technology

[0002] With the popularization of smart wearable electronic products such as smartwatches and smart bands, the market has placed higher demands on the manufacturing quality and production efficiency of their core display components, LCD screens. Most electronic products use thin-film transistor LCD screens, where each pixel integrates an independent thin-film transistor, which can precisely control the pixel display.

[0003] Polarizing films are a core component for thin-film transistor liquid crystal displays (TFT-LCDs) to achieve imaging; without them, images cannot be displayed properly. This is because TFT-LCDs change the alignment of liquid crystal molecules by controlling voltage, thereby altering the polarization direction of light. Only with polarizing films whose polarization directions are perpendicular can the switching between light "passing through" and "blocking" be achieved. Precisely attaching the polarizing film to the glass substrate is a crucial manufacturing process in the field of optical component assembly equipment.

[0004] Currently, the industry generally uses automated equipment to process the polarizer application on irregularly shaped circular glass. Specifically, after a light sensor detects the incoming polarizer, a pneumatic alignment device applies pressure from the outer periphery of the polarizer to ensure its center aligns with the screen center. Then, a signal is sent to a rolling robot to execute the rolling action, applying pressure from top to bottom using rollers or a molding head to complete the application. The alignment and rolling are performed by a pneumatic pusher and the rolling robot respectively, communicating with each other and controlled by a PLC. However, in industrial mass production, to improve efficiency and shorten processing cycles, the connections between processes are very tight, with little redundancy for transitions. This often leads to interference between adjacent processes. Causes of interference include signal transmission interruptions and errors, controller timeouts, and delayed response from the execution unit.

[0005] Therefore, there is an urgent need for a device that can replace threaded program control for automation and ensure smooth and compact response of each action to solve the above problems. To this end, we provide a polarizer attachment device for the LCD screen of smart wearable electronic products to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a polarizer attachment device for the liquid crystal display screen of smart wearable electronic products, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A polarizer attachment device for an LCD screen of a smart wearable electronic product includes a main body, a support platform mounted on the main body, a carrier for supporting the LCD screen mounted on the support platform, a liftable mounting frame on the support platform, a multi-directional slide groove mounted on the bottom of the mounting frame, a plurality of sliders arranged radially on the multi-directional slide groove, the plurality of sliders being circumferentially spaced at equal angles, a clamping rod mounted on each slider, a rotating seat rotatably mounted on the bottom of the multi-directional slide groove, a cantilever mounted on the rotating seat, and an attachment roller for pressing the polarizer mounted rotatably on the cantilever. The support platform is equipped with a main drive rod, which is driven to move up and down by a first drive device. A transmission component is connected between the main drive rod and the mounting frame, so that when the main drive rod moves down, it can drive the mounting frame to descend. After the mounting frame descends to the position and stops moving, the main drive rod continues to move down. It can first drive multiple sliders to synchronously and radially converge, thereby driving the clamping rod to center the polarizer pre-placed on the LCD screen. Then, it drives the rotating seat to rotate, causing the attachment roller to roll once on the surface of the polarizer to attach the polarizer to the LCD screen.

[0008] A polarizer attachment device for an LCD screen of a smart wearable electronic product, as described above: a limiting component for lifting and lowering the mounting frame is provided on the support platform. The limiting component includes a guide rod mounted on the mounting frame and a sliding sleeve mounted on the support platform. The guide rod and the sliding sleeve are slidably engaged.

[0009] A polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product as described above: the first driving device includes a servo electric cylinder mounted on a support platform, and the main driving rod is mounted on the output rod of the servo electric cylinder and driven by the servo electric cylinder to move up and down.

[0010] The polarizer attachment device for the LCD screen of a smart wearable electronic product, as described above, has a soft adhesive layer fixedly bonded to the surfaces of the clamping rod and the attachment roller.

[0011] A polarizer attachment device for an LCD screen of a smart wearable electronic product, as described above: The transmission assembly includes a fixed frame fixedly connected to a mounting frame via a connecting column; a lower transmission cylinder is rotatably mounted on the mounting frame; an upper transmission cylinder is rotatably mounted on the fixed frame; an intermediate shaft is provided between the lower and upper transmission cylinders; a high elastic coefficient spring is provided inside the upper transmission cylinder; a low elastic coefficient spring is provided inside the lower transmission cylinder; both ends of the intermediate shaft are movably inserted into the lower and upper transmission cylinders, respectively; a main drive rod is movably inserted into the upper transmission cylinder; both ends of the high elastic coefficient spring are connected to the main drive rod and the intermediate shaft, respectively; and both ends of the low elastic coefficient spring are connected to the bottom wall inside the lower transmission cylinder and the intermediate shaft, respectively. The spring with the larger elastic coefficient has a larger elastic coefficient than the spring with the smaller elastic coefficient, so that when the main drive rod moves down, the spring with the smaller elastic coefficient is compressed first, and the spring with the larger elastic coefficient is compressed only after the spring with the smaller elastic coefficient is compressed to its limit position. The intermediate shaft and the lower transmission cylinder are connected by a first rotating roller mechanism, so that when the intermediate shaft moves up and down inside the lower transmission cylinder, the first rotating roller mechanism can drive the lower transmission cylinder to rotate. The main drive rod and the upper transmission cylinder are connected by a second rotating roller mechanism, so that when the main drive rod moves up and down inside the upper transmission cylinder, the upper transmission cylinder can be driven to rotate by the second rotating roller mechanism. The lower transmission cylinder and multiple sliders are connected by a locking mechanism, so that when the lower transmission cylinder rotates, the locking mechanism can drive the multiple sliders to move radially synchronously. The upper transmission cylinder and the rotating seat are connected by a chain transmission mechanism, so that when the upper transmission cylinder rotates, the chain transmission mechanism can drive the rotating seat to rotate.

[0012] A polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product as described above: The first roller mechanism includes an intermediate shaft spiral groove formed on an intermediate shaft and a lower transmission cylinder inner wall ball embedded and engaged with the inner wall of the lower transmission cylinder, wherein the lower transmission cylinder inner wall ball rolls in cooperation with the intermediate shaft spiral groove.

[0013] As described above, a polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product includes a second roller mechanism comprising a main drive rod composite groove formed on the main drive rod and upper drive cylinder inner wall balls embedded and engaged with the inner wall of the upper drive cylinder. The upper drive cylinder inner wall balls are in rolling cooperation with the main drive rod composite groove, and the main drive rod composite groove is composed of a spiral groove and a straight groove from top to bottom.

[0014] A polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product as described above: the locking mechanism includes a turntable mounted on a lower transmission cylinder, the turntable having an oblique guide groove, a guide post mounted on the slider, and the guide post slidingly engaging with the oblique guide groove.

[0015] A polarizer attachment device for an LCD screen of a smart wearable electronic product, as described above: the chain drive mechanism includes a side drive rod mounted on a mounting frame and a fixed frame; an upper drive sprocket is mounted on the upper drive cylinder; an upper driven sprocket is mounted on the side drive rod; the upper drive sprocket and the upper driven sprocket are driven by an upper chain; a lower drive sprocket is mounted on the side drive rod; a lower driven sprocket is mounted on the rotating seat; the lower drive sprocket and the lower driven sprocket are driven by a lower chain.

[0016] A polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product, as described above: the platform is provided with a vacuum suction hole array for adsorbing and fixing the liquid crystal display screen and at least two positioning pins for edge positioning of the liquid crystal display screen.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can automatically attach the circular polarizer to the liquid crystal display screen according to the attachment process through the transmission component, and ensure the attachment quality through the automatic centering operation before attachment. In use, the device can automatically and sequentially complete the process of radial centering of the circular polarizer placed on the liquid crystal display screen and then rolling attachment by driving the main drive rod to continuously move downward. The actions of each process are executed in sequence through mechanical transmission, which overcomes the interference problem caused by the timing deviation between the actions of each execution unit controlled by the existing logic program. Among them, the precise center alignment of the circular polarizer is achieved by the synchronous convergence of multiple circumferentially distributed sliders. Combined with the rolling and pressing of the attachment roller, the automatic and uniform attachment of the polarizer after position correction can be achieved. Moreover, the rolling attachment method can also effectively expel air and avoid the generation of bubbles and wrinkles, thereby effectively improving the attachment quality. Furthermore, this invention achieves reliable and orderly attachment action control through mechanical transmission. By utilizing the difference in elastic coefficients between springs with large and small elastic coefficients, in conjunction with a rotating roller mechanism, the linear drive of the main drive rod is transformed into the action of centering and then attaching the circular polarizer. This mechanical sequential control does not require complex electrical control programs, and the action is stable and reliable. At the same time, integrating the centering and attachment functions of the circular polarizer into one device simplifies the overall structure and has the effects of anti-interference and no hysteresis response, which helps to reduce the manufacturing cost of the device and the complexity of later maintenance. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a polarizer attachment device for an LCD screen of a smart wearable electronic product. Figure 2 for Figure 1 A schematic diagram of the decomposed partial structure; Figure 3 for Figure 2 A schematic diagram of the decomposed partial structure; Figure 4 for Figure 3 A schematic diagram of the decomposed partial structure; Figure 5 for Figure 4 A schematic diagram of the decomposed partial structure; Figure 6 for Figure 5 Another structural diagram from another perspective; Figure 7 for Figure 5 A schematic diagram of the decomposed partial structure; Figure 8 A partial cross-sectional view of a polarizer attachment device for an LCD screen of a smart wearable electronic product. Figure 9 for Figure 8 Enlarged structural diagram at point A in the middle; Figure 10 for Figure 7 A schematic diagram of the decomposed partial structure; Figure 11 for Figure 10 A schematic diagram of the decomposed part of the structure.

[0019] In the diagram: 1. Main body of the device; 2. Support platform; 3. Carrier; 4. Mounting frame; 5. Fixing frame; 6. Connecting column; 7. Guide rod; 8. Sliding sleeve; 9. Multi-directional slide groove; 10. Slider; 11. Clamping rod; 12. Rotating seat; 13. Cantilever; 14. Attaching roller; 15. Lower transmission cylinder; 16. Turntable; 17. Inclined guide groove; 18. Guide column; 19. Upper transmission cylinder; 20. Intermediate shaft; 21. Main drive rod; 22. High elastic coefficient spring; 23. Low elastic coefficient spring; 24. Intermediate shaft spiral groove; 25. Lower transmission cylinder inner wall ball bearings; 26. Main drive rod composite groove; 27. Upper transmission cylinder inner wall ball bearings; 28. Side transmission rod; 29. ​​Upper drive sprocket; 30. Upper driven sprocket; 31. Upper chain; 32. Lower drive sprocket; 33. Lower driven sprocket; 34. Lower chain; 35. Servo electric cylinder. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Please see Figure 1-11As an embodiment of the present invention, a polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product includes a device body 1, a support platform 2 mounted on the device body 1, a carrier 3 for supporting the liquid crystal display screen mounted on the support platform 2, a lifting mounting frame 4 on the support platform 2, a multi-directional slide groove 9 mounted at the bottom of the mounting frame 4, a plurality of sliders 10 arranged radially on the multi-directional slide groove 9, the plurality of sliders 10 being distributed at equal angular intervals in the circumferential direction, a clamping rod 11 mounted on each slider 10, a rotating seat 12 rotatably mounted at the bottom of the multi-directional slide groove 9, a cantilever 13 mounted on the rotating seat 12, and an attachment roller 14 for pressing polarizers rotatably mounted on the cantilever 13. The support platform 2 is equipped with a main drive rod 21, which is driven to move up and down by a first drive device. A transmission component is connected between the main drive rod 21 and the mounting frame 4, so that when the main drive rod 21 moves down, it can drive the mounting frame 4 to descend. After the mounting frame 4 descends to the position and stops moving, the main drive rod 21 continues to move down. It can first drive multiple sliders 10 to synchronously and radially converge, thereby driving the clamping rod 11 to center the polarizer that is pre-placed on the LCD screen. Then, it drives the rotating seat 12 to rotate, thereby driving the attachment roller 14 to roll once on the surface of the polarizer to attach the polarizer to the LCD screen.

[0022] In this embodiment, during use, the LCD screen is first installed on the platform 3, and then a circular polarizer is placed on the upper surface of the LCD screen. The main drive rod 21 is driven downward by the first drive device. When the main drive rod 21 moves downward, it drives the mounting frame 4 to descend through the transmission assembly. When the mounting frame 4 descends to its position, the attachment roller 14 abuts against the circular polarizer placed on the platform 3, and the mounting frame 4 can no longer descend. At this time, if the main drive rod 21 continues to move downward, it will first drive multiple radially arranged sliders 10 on the multi-directional slide 9 to converge inward synchronously through the transmission assembly, thereby driving each The clamping rod 11 on the slider 10 aligns the circular polarizer pre-placed on the LCD screen with its center. After alignment, if the main drive rod 21 continues to move downward, it will drive the rotating seat 12 to rotate through the transmission component. The rotating seat 12 drives the cantilever 13 and the attachment roller 14 on it to rotate together. The attachment roller 14 can also rotate on its own axis while revolving around the rotating seat 12, so that the attachment roller 14 rolls once on the surface of the aligned circular polarizer, and attaches the circular polarizer flatly to the LCD screen. The whole process can be completed automatically and sequentially by the single continuous downward drive of the main drive rod 21.

[0023] As a further embodiment of the present invention, the support platform 2 is provided with a limiting component for the lifting and lowering of the mounting frame 4. The limiting component includes a guide rod 7 installed on the mounting frame 4 and a sliding sleeve 8 installed on the support platform 2, with the guide rod 7 and the sliding sleeve 8 in sliding engagement.

[0024] In this embodiment, the cooperation between the guide rod 7 and the sliding sleeve 8 ensures that the mounting bracket 4 moves smoothly in the vertical direction during the lifting process, preventing positional deviation during its movement.

[0025] As a further embodiment of the present invention, the first driving device includes a servo electric cylinder 35 mounted on the support platform 2, and a main driving rod 21 mounted on the output rod of the servo electric cylinder 35 and driven by the servo electric cylinder 35 to move up and down.

[0026] In this embodiment, the servo electric cylinder 35 is the power source. The servo electric cylinder 35 is electrically connected to an external power source through a wire. The linear motion of its output rod is directly transmitted to the main drive rod 21, which then moves the main drive rod 21 in a linear motion.

[0027] As a further embodiment of the present invention, a soft adhesive layer is fixedly adhered to the surfaces of the clamping rod 11 and the attaching roller 14.

[0028] In this embodiment, the soft adhesive layer is made of silicone or rubber, which can provide cushioning and protection, preventing the clamping rod 11 from scratching the edge of the polarizer when aligning, and also preventing the attachment roller 14 from damaging the polarizer or LCD screen surface due to concentrated pressure during rolling and pressing.

[0029] As a further embodiment of the present invention, the transmission assembly includes a fixed frame 5 fixedly connected to the mounting frame 4 via a connecting column 6. A lower transmission cylinder 15 is rotatably mounted on the mounting frame 4, and an upper transmission cylinder 19 is rotatably mounted on the fixed frame 5. An intermediate shaft 20 is provided between the lower transmission cylinder 15 and the upper transmission cylinder 19. A high elastic coefficient spring 22 is provided inside the upper transmission cylinder 19, and a low elastic coefficient spring 23 is provided inside the lower transmission cylinder 15. The two ends of the intermediate shaft 20 are movably inserted into the lower transmission cylinder 15 and the upper transmission cylinder 19, respectively. A main drive rod 21 is movably inserted into the upper transmission cylinder 19. The two ends of the high elastic coefficient spring 22 are connected to the main drive rod 21 and the intermediate shaft 20, respectively. The two ends of the low elastic coefficient spring 23 are connected to the bottom wall inside the lower transmission cylinder 15 and the intermediate shaft 20, respectively. The elastic coefficient of the large elastic coefficient spring 22 is greater than that of the small elastic coefficient spring 23, so when the main drive rod 21 moves down, the small elastic coefficient spring 23 is compressed first. After the small elastic coefficient spring 23 is compressed to its limit position, the large elastic coefficient spring 22 is compressed. The intermediate shaft 20 and the lower transmission cylinder 15 are connected by a first rotating roller mechanism, so that when the intermediate shaft 20 moves up and down in the lower transmission cylinder 15, the first rotating roller mechanism can drive the lower transmission cylinder 15 to rotate. The main drive rod 21 is connected to the upper transmission cylinder 19 through a second rotating roller mechanism, so that when the main drive rod 21 moves up and down in the upper transmission cylinder 19, the upper transmission cylinder 19 can be driven to rotate through the second rotating roller mechanism. The lower transmission cylinder 15 is engaged with multiple sliders 10 through a locking mechanism, so that when the lower transmission cylinder 15 rotates, the locking mechanism can drive multiple sliders 10 to move radially synchronously. The upper transmission cylinder 19 and the rotating seat 12 are connected by a chain transmission mechanism, so that when the upper transmission cylinder 19 rotates, the rotating seat 12 can be driven to rotate through the chain transmission mechanism.

[0030] In this embodiment, during the initial downward movement of the main drive rod 21, since the mounting frame 4 is not yet in place, its downward pressure is transmitted through the high elastic coefficient spring 22, the intermediate shaft 20, and the low elastic coefficient spring 23, driving the entire mounting frame 4 to descend. When the mounting frame 4 descends to its final position, i.e., when the attachment roller 14 contacts the polarizer, the movement of the mounting frame 4 begins to be obstructed. As the main drive rod 21 continues to descend, it first compresses the low elastic coefficient spring 23, forcing the intermediate shaft 20 to move downward relative to the lower transmission cylinder 15. This, in turn, drives the lower transmission cylinder 15 to rotate via the first rotating roller mechanism. Then, the locking mechanism drives all the sliders 10 to converge radially, which in turn drives all the clamping rods 11 to converge radially and clamp the circular polarizer from the circumference, thus completing the centering action. After the circular polarizer is centered, the main drive rod 21 continues to move downward to compress the large elastic coefficient spring 22, which has a larger elastic coefficient, forcing the main drive rod 21 to move downward relative to the upper transmission cylinder 19. The upper transmission cylinder 19 is driven to rotate through the second rotating roller mechanism, which in turn drives the rotating seat 12 to rotate through the chain transmission mechanism, thereby driving the cantilever 13 and the attachment roller 14 to rotate and complete the attachment action.

[0031] As a further embodiment of the present invention, the first roller mechanism includes an intermediate shaft spiral groove 24 formed on the intermediate shaft 20 and a lower transmission cylinder inner wall ball 25 embedded and engaged with the inner wall of the lower transmission cylinder 15, wherein the lower transmission cylinder inner wall ball 25 and the intermediate shaft spiral groove 24 are in rolling engagement.

[0032] In this embodiment, when the intermediate shaft 20 moves up and down relative to the lower transmission cylinder 15, the inner wall ball bearings 25 of the lower transmission cylinder roll along the spiral groove 24 of the intermediate shaft, converting the linear motion of the intermediate shaft 20 into the rotational motion of the lower transmission cylinder 15. When the inner wall ball bearings 25 of the lower transmission cylinder roll to the uppermost limit position of the spiral groove 24 of the intermediate shaft, the spiral groove 24 of the intermediate shaft and the inner wall ball bearings 25 of the lower transmission cylinder are jammed, the intermediate shaft 20 cannot continue to move down relative to the lower transmission cylinder 15, the lower transmission cylinder 15 no longer rotates, and the multiple clamping rods 11 used for centering are also clamped on the outer periphery of the circular polarizer and locked in position. At this time, since the intermediate shaft 20 no longer moves down, the main drive rod 21 begins to compress the high elastic coefficient spring 22 and continues to move down. When the main drive rod 21 moves down in the upper transmission cylinder 19, it drives the upper transmission cylinder 19 to rotate.

[0033] As a further embodiment of the present invention, the second roller mechanism includes a main drive rod composite groove 26 formed on the main drive rod 21 and an upper transmission cylinder inner wall ball 27 embedded and engaged with the inner wall of the upper transmission cylinder 19. The upper transmission cylinder inner wall ball 27 rolls with the main drive rod composite groove 26. The main drive rod composite groove 26 is composed of a spiral groove and a straight groove from top to bottom.

[0034] In this embodiment, the design of the main drive rod composite groove 26 realizes phased control. During the stage when the intermediate shaft 20 moves down to drive the lower transmission cylinder 15 to rotate, the inner wall ball bearing 27 of the upper transmission cylinder is located in the straight groove part of the main drive rod composite groove 26. At this time, there is no relative rotation between the main drive rod 21 and the upper transmission cylinder 19, and the attaching roller 14 does not roll. When the centering is completed and the attaching action needs to be triggered, the inner wall ball bearing 27 of the upper transmission cylinder enters the spiral groove part of the main drive rod composite groove 26. The continued downward movement of the main drive rod 21 will be converted into the rotation of the upper transmission cylinder 19, thereby driving the attaching roller 14 to roll.

[0035] As a further embodiment of the present invention, the locking mechanism includes a turntable 16 mounted on the lower transmission cylinder 15, the turntable 16 having an oblique guide groove 17, and a guide post 18 mounted on the slider 10, the guide post 18 slidingly engaging with the oblique guide groove 17.

[0036] In this embodiment, when the transmission cylinder 15 rotates, it drives the turntable 16 to rotate synchronously. The inclined guide groove 17 on the turntable 16 rotates accordingly. Through the guide post 18 that cooperates with it, all the sliders 10 are forced to move synchronously along the radial direction of the multi-directional slide groove 9, so as to realize the synchronous convergence or opening of all the clamping rods 11.

[0037] As a further embodiment of the present invention, the chain drive mechanism includes a side drive rod 28 mounted on the mounting frame 4 and the fixed frame 5, an upper drive sprocket 29 mounted on the upper drive cylinder 19, an upper driven sprocket 30 mounted on the side drive rod 28, the upper drive sprocket 29 and the upper driven sprocket 30 being driven by an upper chain 31, a lower drive sprocket 32 ​​mounted on the side drive rod 28, a lower driven sprocket 33 mounted on the rotating seat 12, and the lower drive sprocket 32 ​​and the lower driven sprocket 33 being driven by a lower chain 34.

[0038] In this embodiment, the rotational power of the upper transmission cylinder 19 is transmitted sequentially to the side transmission rod 28 through the upper drive sprocket 29, the upper chain 31 of the first chain, the upper driven sprocket 30, and the lower drive sprocket 32, driving the side transmission rod 28 to rotate. Then, the rotational power of the side transmission rod 28 is transmitted sequentially to the rotating seat 12 through the lower drive sprocket 32, the lower chain 34, and the lower driven sprocket 33, ultimately driving the rotating seat 12 to rotate.

[0039] As a further embodiment of the present invention, the stage 3 is provided with a vacuum suction hole array for adsorbing and fixing the liquid crystal display screen and at least two positioning pins for edge positioning of the liquid crystal display screen.

[0040] In this embodiment, the vacuum suction array generates a uniform adsorption force after vacuuming, which firmly fixes the liquid crystal display screen on the stage 3 and prevents it from moving during the attachment process. The positioning pin is used to initially position the liquid crystal display screen to ensure that its placement position is accurate, providing a stable reference for the subsequent alignment and attachment of the polarizer.

[0041] The working principle of this invention is as follows: First, the LCD screen is installed and fixed on the carrier 3. Then, the circular polarizer to be attached is initially placed on the upper surface of the LCD screen. The first driving device is activated, which drives the main driving rod 21 to move continuously downward. When the main driving rod 21 moves downward, it first drives the mounting frame 4 to descend as a whole through the transmission assembly until the attaching roller 14 at its bottom contacts and lightly presses against the upper surface of the polarizer. At this point, the mounting frame 4 stops descending due to obstruction. The main driving rod 21 continues to move downward, and the elastic system in the transmission assembly will then... The synergistic effect of springs 22 with different high elastic coefficients and springs 23 with low elastic coefficients, combined with the first and second rotating roller mechanisms, sequentially converts the linear drive of the main drive rod 21 into two actions: first, it drives all radially arranged sliders 10 on the multi-directional slide 9 to converge inwards synchronously, and then uses the clamping rods 11 on each slider 10 to center and correct the polarizer. After centering, it drives the rotating seat 12 to rotate, thereby causing the attachment roller 14 to roll around once on the centered polarizer surface, so that the circular polarizer is flatly pressed and attached to the LCD screen.

[0042] The above embodiments are exemplary and not restrictive. Therefore, any technical solutions that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention are included within the scope of the present invention.

Claims

1. A polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product, comprising a device body (1), characterized in that, The main body (1) of the device is equipped with a support platform (2), the support platform (2) is equipped with a carrier (3) for supporting the liquid crystal display screen, the support platform (2) is equipped with a lifting mounting frame (4), the bottom of the mounting frame (4) is equipped with a multi-directional slide groove (9), the multi-directional slide groove (9) is slidably equipped with a plurality of sliders (10) arranged radially thereon, the plurality of sliders (10) are distributed at equal angular intervals in the circumferential direction, each slider (10) is equipped with a clamping rod (11), the bottom of the multi-directional slide groove (9) is rotatably equipped with a rotating seat (12), the rotating seat (12) is equipped with a cantilever (13), the cantilever (13) is rotatably equipped with an attachment roller (14) for pressing polarizer. The support platform (2) is provided with a main drive rod (21). The main drive rod (21) is driven to move up and down by the first drive device. A transmission component is connected between the main drive rod (21) and the mounting frame (4), so that when the main drive rod (21) moves down, it can drive the mounting frame (4) to descend. When the mounting frame (4) descends to the position and stops moving, the main drive rod (21) continues to move down. It can first drive multiple sliders (10) to synchronously and radially converge, drive the clamping rod (11) to center the polarizer placed on the LCD screen, and then drive the rotating seat (12) to rotate, drive the attachment roller (14) to roll around the surface of the polarizer, so that the polarizer is attached to the LCD screen.

2. The polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product according to claim 1, characterized in that, The support platform (2) is provided with a limiting component for the lifting and lowering of the mounting frame (4). The limiting component includes a guide rod (7) installed on the mounting frame (4) and a sliding sleeve (8) installed on the support platform (2). The guide rod (7) and the sliding sleeve (8) are in sliding cooperation.

3. The polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product according to claim 1, characterized in that, The first driving device includes a servo electric cylinder (35) mounted on a support platform (2), and the main drive rod (21) is mounted on the output rod of the servo electric cylinder (35) and driven by the servo electric cylinder (35) to move up and down.

4. The polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product according to claim 1, characterized in that, The surfaces of the clamping rod (11) and the attaching roller (14) are both fixedly bonded with a soft rubber layer.

5. The polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product according to claim 1, characterized in that, The transmission assembly includes a fixed frame (5) fixedly connected to the mounting frame (4) via a connecting column (6). A lower transmission cylinder (15) is rotatably mounted on the mounting frame (4), and an upper transmission cylinder (19) is rotatably mounted on the fixed frame (5). An intermediate shaft (20) is provided between the lower transmission cylinder (15) and the upper transmission cylinder (19). A high elastic coefficient spring (22) is provided inside the upper transmission cylinder (19), and a low elastic coefficient spring (23) is provided inside the lower transmission cylinder (15). The two ends of the intermediate shaft (20) are movably inserted into the lower transmission cylinder (15) and the upper transmission cylinder (19), respectively. The main drive rod (21) is movably inserted into the upper transmission cylinder (19). The two ends of the high elastic coefficient spring (22) are connected to the main drive rod (21) and the intermediate shaft (20), respectively. The two ends of the low elastic coefficient spring (23) are connected to the bottom wall inside the lower transmission cylinder (15) and the intermediate shaft (20), respectively. The elastic coefficient of the large elastic coefficient spring (22) is greater than that of the small elastic coefficient spring (23), so that when the main drive rod (21) moves down, the small elastic coefficient spring (23) is compressed first, and after the small elastic coefficient spring (23) is compressed to the limit position, the large elastic coefficient spring (22) is compressed. The intermediate shaft (20) and the lower transmission cylinder (15) are connected by a first rotating roller mechanism, so that when the intermediate shaft (20) moves up and down in the lower transmission cylinder (15), the first rotating roller mechanism can drive the lower transmission cylinder (15) to rotate. The main drive rod (21) and the upper transmission cylinder (19) are connected by a second rotating roller mechanism, so that when the main drive rod (21) moves up and down in the upper transmission cylinder (19), the upper transmission cylinder (19) can be driven to rotate by the second rotating roller mechanism. The lower transmission cylinder (15) and the multiple sliders (10) are engaged by a locking mechanism, so that when the lower transmission cylinder (15) rotates, the locking mechanism can drive the multiple sliders (10) to move radially synchronously. The upper transmission cylinder (19) and the rotating seat (12) are connected by a chain transmission mechanism, so that when the upper transmission cylinder (19) rotates, the rotating seat (12) can be driven to rotate through the chain transmission mechanism.

6. The polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product according to claim 5, characterized in that, The first roller mechanism includes an intermediate shaft spiral groove (24) formed on the intermediate shaft (20) and a lower transmission cylinder inner wall ball (25) embedded and engaged with the inner wall of the lower transmission cylinder (15). The lower transmission cylinder inner wall ball (25) rolls in cooperation with the intermediate shaft spiral groove (24).

7. The polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product according to claim 5, characterized in that, The second roller mechanism includes a main drive rod composite groove (26) opened on the main drive rod (21) and an upper transmission cylinder inner wall ball (27) embedded and snapped into the inner wall of the upper transmission cylinder (19). The upper transmission cylinder inner wall ball (27) rolls with the main drive rod composite groove (26). The main drive rod composite groove (26) is composed of a spiral groove and a straight groove from top to bottom.

8. The polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product according to claim 5, characterized in that, The locking mechanism includes a turntable (16) mounted on the lower transmission cylinder (15), the turntable (16) having an oblique guide groove (17), and a guide post (18) mounted on the slider (10), the guide post (18) slidingly engaging with the oblique guide groove (17).

9. The polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product according to claim 5, characterized in that, The chain drive mechanism includes a side drive rod (28) mounted on the mounting frame (4) and the fixed frame (5). An upper drive sprocket (29) is mounted on the upper drive cylinder (19). An upper driven sprocket (30) is mounted on the side drive rod (28). The upper drive sprocket (29) and the upper driven sprocket (30) are driven by an upper chain (31). A lower drive sprocket (32) is mounted on the side drive rod (28). A lower driven sprocket (33) is mounted on the rotating seat (12). The lower drive sprocket (32) and the lower driven sprocket (33) are driven by a lower chain (34).

10. The polarizer attachment device for a liquid crystal display screen of a smart wearable electronic product according to claim 1, characterized in that, The stage (3) is provided with a vacuum suction hole array for adsorbing and fixing the liquid crystal display screen and at least two positioning pins for edge positioning of the liquid crystal display screen.

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