A high-precision attaching process for a privacy watch face

Abstract

The application relates to a high-precision attaching process for a peep-proof watch face, and relates to the technical field of automobile watch face processing.The process comprises a lower disc positioning operation, a control limiting positioning assembly is connected to a clamping limiting assembly and is controlled to move downwards, the limiting positioning assembly is started, and the clamping limiting assembly is driven to clamp the watch face; a film pasting preparation operation is performed, the limiting positioning assembly and the clamping limiting assembly are separated, dust suction treatment is performed on the peep-proof film on a film pasting assembly, and then the peep-proof film is moved to the watch face; a film pasting operation is performed, the film pasting assembly is controlled to be started, the peep-proof film is moved downwards to the watch face, and the watch face is pasted. In the application, even if the position of the limiting positioning assembly deviates, the clamping limiting assembly can be cooperatively treated, so that the relative position of the peep-proof film and the watch face is in a relatively stable state, and the peep-proof film is adhered to the watch face in a gluing manner, so that the position of the peep-proof film cannot be moved under vibration, and the application stability of the peep-proof film is ensured.

Description

Technical Field

[0001] This invention relates to the field of automotive dial processing technology, specifically a high-precision bonding process for privacy watch tags. Background Technology

[0002] The car dashboard is an important part of the automotive electronics industry. Modern car dashboards feature LCD (liquid crystal display) screens to show vehicle status. Traditionally, the instrument panel was mounted in a cover on the dashboard. However, with the pursuit of a younger, faster-paced automotive market and the increasing demand for new energy vehicles, the instrument panel has been replaced by a direct-insertion design, eliminating the cover and related backing plates and adopting a flat, tablet-like structure. This elimination of the cover and backing plates has a drawback: at night or in dimly lit spaces, the instrument panel backlight and LCD display can reflect off the dashboard glass, affecting visibility while driving.

[0003] To address the aforementioned technical issues, a low-emissivity automotive glass with an invisible film was disclosed in patent application number 202020733858.X. Specifically, an outer glass layer and an inner glass layer are fixedly connected to the inner wall of the frame. The outer glass layer has a low-emissivity coating on its side wall near the inner glass layer, and an anti-peeping film is also snapped onto the frame to prevent reflections from the instrument panel and LCD display onto the dashboard.

[0004] In the above technical solution, when the privacy film is snapped on by the snap-on structure, the privacy film and the frame are not fixedly connected. During the car's operation, it is very easy for bumps to occur, causing the privacy film and the frame to vibrate. As a result, when the privacy film is in motion, the display on the dashboard will vibrate, affecting the driver's observation and operation, which poses a safety hazard. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision attachment process for privacy watch tags.

[0006] The technical problem solved by this invention is to address the issue that in the prior art, when the privacy film is snapped together by a snap-fit ​​structure, the privacy film and the frame are not fixedly connected. When the car is moving and there are bumps, the privacy film and the frame are prone to vibration, causing the relative position of the privacy film and the dial to move, which affects the driver's observation and operation.

[0007] This invention can be achieved through the following technical solution: a high-precision attachment process for privacy watch tags, comprising the following steps:

[0008] Step 1, feeding operation: Place the dial on the feeding conveyor belt to achieve uniform and constant feeding of the dial. Place the privacy film on the film application assembly and fix the privacy film through the film application assembly.

[0009] Step 2: Lower plate positioning operation. Control the limit positioning component to move downward and connect to the clamping limit component. Activate the limit positioning component to drive the clamping limit component to clamp the dial.

[0010] Step 3, preparing for film application: Separate the limiting and positioning components and the clamping and limiting components. After vacuuming the privacy film on the film application component, move the privacy film onto the dial.

[0011] Step 4: Applying the screen protector. Control the screen protector application assembly to move the privacy film down onto the watch face and apply it to the watch face.

[0012] A further technical improvement of the present invention is that, when the limiting positioning component and the clamping limiting component are connected, the installation rod is controlled to move longitudinally by activating the limiting telescopic rod until the mating end enters the limiting groove of the clamping limiting component, so that the limiting positioning component and the clamping limiting component are mated and connected.

[0013] A further technical improvement of the present invention is that: when the limiting positioning component and the clamping limiting component are used together, the limiting positioning component is controlled to move, which drives the position of the clamping limiting component to move, until the clamping limiting component adjusts the position of the dial on the feeding conveyor belt, until the clamping limiting component clamps and positions the dial, the limiting telescopic rod moves in the opposite direction, and the control mating end moves out of the limiting groove.

[0014] A further technical improvement of the present invention is that, when used at the mating end, the limiting groove is provided with a first limiting groove and a second limiting groove, the first limiting groove being square and the second limiting groove being circular.

[0015] A further technical improvement of the present invention is that: when the first limiting groove is in use, the mating base is controlled to move into the interior of the first mounting housing, and the mating teeth and limiting teeth are engaged by adjusting the lateral position of the mating base. Through the continuous movement of the mating base, the first mounting housing is controlled to drive the first limiting block to move to the side of the dial plane.

[0016] A further technical improvement of the present invention is that: when the second limiting groove is in use, the control ring moves to the inside of the second mounting housing, the control ring moves laterally, and the control ring engages with the inside of the limiting ring. Through the continuous movement of the control ring, the control of the second mounting housing drives the limiting wheel to move to the arc end of the dial.

[0017] A further technical improvement of the present invention is as follows: when the film application assembly is started, the vacuuming device is started, and the vacuuming device is used to adsorb dust on the surface of the privacy film on the placement tray. The height of the placement tray is controlled by the start of the middle telescopic rod, the rotating motor is started, and the privacy film after being vacuumed is flipped to the bottom. By continuously starting the middle telescopic rod, the privacy film is controlled to contact the dial, and the dial is applied with film.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By connecting the limiting positioning component and the clamping limiting component, when positioning the dial and privacy film, the limiting telescopic rod is first activated, causing the mating ends to enter the first and second mounting housings respectively, thus connecting the limiting positioning component and the clamping limiting component. Then, by activating the adjusting motor, the adjusting screw rotates, causing the adjusting slider to slide inside the adjusting groove. This, in turn, causes the lower limiting telescopic rod to move laterally, which in turn moves the limiting base laterally, causing the mating ends to move the first limiting block and the limiting wheel respectively. The first limiting block and the limiting wheel then... The dial is clamped and limited. During this process, the limiting positioning component and the clamping limiting component are connected to prevent the position change of the limiting positioning component due to long-term operation. In this application, even if the position of the limiting positioning component deviates, the clamping limiting component can still be coordinated to keep the relative position of the privacy film and the dial relatively stable. In addition, this application uses adhesive to attach the privacy film to the dial, which can prevent the privacy film from moving under vibration, ensuring the application stability of the privacy film and solving the observation deviation caused by the unstable position of the privacy film in the prior art.

[0020] 2. In this application, the mating base moves into the first limiting groove. At this time, after the mating teeth move, they engage with the limiting teeth to push the first mounting housing. Simultaneously, the mating ring is placed inside the second limiting groove. When the mating ring moves, it is locked inside the limiting ring, which drives the movement of the first limiting block and the limiting wheel. That is, when the first limiting block moves to the position of the dial and the limiting wheel moves to the arc edge position of the dial, the dial is positioned. The first telescopic rod and the second telescopic rod are activated to maintain this position, achieving precise positioning of the dial. By using the engagement of the mating teeth and the limiting teeth, as well as the engagement of the mating ring and the limiting ring, the clamping and positioning of the irregular dial is achieved.

[0021] 3. In this application, by reversing the activation of the limiting telescopic rod, the mating end is moved away from the first and second mounting housings, and the limiting mounting base is moved in the opposite direction. At this time, by activating the intermediate telescopic rod, the rotating base is moved downward until the privacy film adsorbed on the placement plate is moved downward to the position of the dial, and the privacy film is attached to the dial. During this process, because the limiting mounting base is moved away from the dial, the privacy film is prevented from contacting the mounting rod, which may cause the edge of the privacy film to be rubbed. Attached Figure Description

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the clamping and limiting component of the present invention;

[0025] Figure 3 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0026] Figure 4 This is a schematic diagram of the limiting and positioning component of the present invention;

[0027] Figure 5 This is a schematic diagram of the film-applying assembly of the present invention;

[0028] Figure 6 This is a schematic diagram of the first mounting housing structure of the present invention;

[0029] Figure 7 This is a schematic diagram showing the connection position of the limiting tooth and the mating tooth in this invention;

[0030] Figure 8 This is a schematic diagram of the limiting ring and mating ring structure of the present invention.

[0031] In the diagram: 1. Feeding conveyor wheel; 2. Feeding conveyor belt; 3. Limiting and positioning assembly; 31. Adjusting motor; 32. Adjusting screw; 33. Adjusting slide; 34. Adjusting slider; 35. Limiting mounting base; 36. Limiting telescopic rod; 37. Limiting through hole; 38. Limiting nut; 39. Mounting rod; 310. Mating end; 311. Limiting base; 312. First mounting housing; 313. Mating base; 314. Mating tooth; 315. Limiting tooth; 316. Limiting ring; 317. Second mounting housing; 318. Mating ring; 4. Film application assembly; 41. Intermediate base; 42. Intermediate telescopic rod; 43. Rotating base; 44. Placement tray; 45. Rotating motor; 46. Vacuum cleaning device; 47. Connecting seat; 5. Dial; 6. Clamping and limiting assembly; 61. First limiting block; 62. First telescopic rod; 63. Second telescopic rod; 64. First limiting groove; 65. Second limiting groove; 66. Limiting wheel. Detailed Implementation

[0032] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0033] Please see Figure 1-8As shown, a high-precision attachment process for privacy watch tags includes the following steps:

[0034] Step 1: Loading operation. Place the dial 5 on the loading conveyor belt 2. Control the loading conveyor belt 2 to convey the material according to the start of the loading conveyor wheel 1, so as to achieve uniform and constant speed loading. Place the privacy film on the film application assembly 4. The privacy film is adsorbed and fixed by the suction cup on the film application assembly 4 to achieve loading of the privacy film.

[0035] Step 2: Lower plate positioning operation. Position the dial 5 by connecting the limiting positioning component 3 downward to the clamping limiting component 6, activating the limiting positioning component 3, and driving the clamping limiting component 6 to clamp and position the dial 5. That is, the limiting positioning component 3 is used to position the clamping position of the clamping limiting component 6, so as to achieve precise positioning of the dial 5 and the privacy film.

[0036] Step 3: Preparation for applying the screen protector. Separate the limiting and positioning component 3 and the clamping and limiting component 6. Vacuum the privacy film on the screen protector component 4. Flip the privacy film downwards so that the privacy film and the dial 5 are vertically aligned and positioned.

[0037] Step 4: Applying the screen protector. Control the activation of the screen protector application component 4 to move the privacy screen protector down onto the dial 5 and apply it to the dial 5.

[0038] When the limiting and positioning component 3 is in use, the installation rod 39 is moved longitudinally by activating the limiting telescopic rod 36 until the mating end 310 enters the limiting groove of the clamping limiting component 6, thus realizing the mating connection between the limiting and positioning component 3 and the clamping limiting component 6. The opposing movement of the limiting and positioning component 3 drives the position of the clamping limiting component 6 to move. The clamping limiting component 6 is used to adjust and position the dial 5 on the feeding conveyor belt 2. After the clamping limiting component 6 is activated for positioning, the limiting telescopic rod 36 controls the mating end 310 to move out of the limiting groove.

[0039] When the limiting positioning components 3 move towards each other, the starting of the adjusting motor 31 controls the rotation of the adjusting screw 32, which in turn controls the adjusting slider 34 to move laterally inside the adjusting groove 33, thereby driving the limiting telescopic rod 36 to move towards each other.

[0040] When using the limit positioning component 3, the limit nut 38 is screwed out from the mounting rod 39 to adjust the position of the mounting rod 39 according to the size of the dial 5. The mounting rod 39 is then installed inside the corresponding limit through hole 37 according to the installation requirements and fixed again by the limit nut 38.

[0041] When the mating end 310 is used, according to the irregular shape of the dial 5, the limiting groove is provided with a first limiting groove 64 and a second limiting groove 65. In summary, the mating end 310 selects the square first limiting groove 64 and the circular second limiting groove 65 according to the mating to realize the clamping and positioning operation of the irregular arc-shaped dial 5.

[0042] When the first limiting groove 64 is in use, the control mating base 313 moves into the interior of the first mounting housing 312. By starting the adjustment motor 31, the control mating teeth 314 and limiting teeth 315 on the side of the mating base 313 engage. When the adjustment motor 31 continues to start, it drives the first mounting housing 312 to move, thereby driving the first limiting block 61 to move until the first limiting block 61 moves to the side of the dial 5 and limits the side of the dial 5.

[0043] When the second limiting groove 65 is in use, the control mating ring 318 moves longitudinally to the inside of the second mounting housing 317. By adjusting the start of the motor 31, the control mating ring 318 and the limiting ring 316 are engaged. Then, when the adjustment motor 31 continues to start, it drives the second mounting housing 317 to move, thereby driving the limiting wheel 66 to move. The limiting wheel 66 is used to limit the arc edge of the dial 5.

[0044] When the clamping and limiting assembly 6 is activated, the first telescopic rod 62 activates to control the position of the first limiting block 61, and the second telescopic rod 63 activates to control the position of the limiting wheel 66, so that the first limiting block 61 is located at the edge of the plane of the dial 5, and the limiting wheel 66 is located on the side of the dial 5, and is limited along the arc edge of the dial 5.

[0045] When the film application assembly 4 is started, the vacuum cleaner 46 is started first to adsorb the privacy film surface on the placement tray 44. Then, the vertical height of the placement tray 44 is changed by starting the middle telescopic rod 42. During this process, the privacy film after being vacuumed is flipped to the bottom by starting the rotating motor 45. By continuously starting the middle telescopic rod 42, the privacy film is controlled to contact the dial 5 and the dial 5 is applied with film.

[0046] The clamping and limiting assembly 6 includes a first limiting block 61 and a limiting wheel 66. A first telescopic rod 62 that can move laterally relative to the feeding conveyor belt 2 is provided with a first limiting block 61 installed at the end of the first telescopic rod 62. The first limiting block 61 is "L" shaped. A first mounting housing 312 is provided on the first limiting block 61. A first limiting groove 64 is provided on the first mounting housing 312. The first mounting housing 312 and the mating end 310 are mated.

[0047] A second telescopic rod 63 is fixed on the mounting bracket on the side of the feeding conveyor belt 2. A limit wheel 66 is rotatably installed at the output end of the second telescopic rod 63. A second mounting housing 317 is installed on the limit wheel 66. A second limit groove 65 is opened on the second mounting housing 317, and the second mounting housing 317 and the mating end 310 are mated.

[0048] Specifically, a limiting tooth 315 is fixed on the side of the first limiting groove 64, and a mating base 313 is fixed on the end of the mounting rod 39. A mating tooth 314 is installed on the side of the mating base 313, and the mating tooth 314 and the limiting tooth 315 are mated and connected.

[0049] Limiting rings 316 are evenly installed on the side wall of the second limiting groove 65, and a mating ring 318 is fixed at the end of the mounting rod 39, wherein the mating ring 318 and the limiting ring 316 are used together.

[0050] The limiting and positioning assembly 3 includes a limiting telescopic rod 36, which is mounted on a limiting mounting base 35. A limiting base 311 is fixed at the output end of the limiting telescopic rod 36. Limiting through holes 37 are evenly provided on the limiting base 311. An installation rod 39 is slidably provided on the limiting through holes 37. Threads are evenly provided on the installation rod 39. A limiting nut 38 is threadedly connected to the installation rod 39. A mating end 310 is fixedly installed at the end of the installation rod 39. The mating end 310 can be selected as either a mating tooth 314 or a mating ring 318 as needed.

[0051] In use, the height of the limiting base 311 is controlled by the activation of the limiting telescopic rod 36, so as to realize the cooperation between the mating end 310 and the first mounting housing 312 or the second mounting housing 317. In this application, the mounting rod 39 is installed inside the appropriate limiting through hole 37, and the position of the mounting rod 39 is restricted by the limiting nut 38, so as to be suitable for different sizes of dial 5 and to clamp the dial 5.

[0052] In this application, the limiting mounting base 35 is installed at the output end of the lateral movement component. The lateral movement component can be a lateral telescopic rod, or the limiting mounting base 35 can be fixedly installed on the adjusting slider 34. The adjusting slider 34 is slidably connected to the adjusting groove 33 and threadedly connected to the adjusting screw 32. The adjusting screw 32 is driven by the adjusting motor 31. When the adjusting motor 31 is started, it drives the adjusting screw 32 to rotate, thereby causing the adjusting slider 34 to slide under the limiting action of the adjusting groove 33, thus realizing the movement control of the limiting mounting base 35.

[0053] The film application assembly 4 includes a central base 41, with connecting seats 47 symmetrically installed on the sides of the central base 41. A central telescopic rod 42 is provided on the side of the central base 41, and a rotating base 43 is installed at the end of the central telescopic rod 42. A rotating motor 45 is fixed on the rotating base 43, and the rotating motor 45 drives the placement tray 44 to rotate. Suction cup openings are evenly opened on the placement tray 44 for adsorbing and limiting the privacy film. A vacuum cleaner 46 is fixedly installed on the connecting seat 47 for further vacuuming the surface of the privacy film.

[0054] In use, the dial 5, coated with adhesive, is first placed on the feeding conveyor belt 2. A robotic arm automatically feeds the dial 5 onto the conveyor belt 2 until it reaches a set position. The conveyor belt then stops. The activation of the limiting telescopic rod 36 causes the mating end 310 to enter the first mounting housing 312 and the second mounting housing 317, connecting the limiting positioning component 3 and the clamping limiting component 6. Subsequently, the starting of the adjusting motor 31 rotates the adjusting screw 32, causing the adjusting slider 34 to slide within the adjusting groove 33. During this process, the movement of the limiting telescopic rod 36 causes the limiting base 311 to move laterally, thus pushing the clamping limiting component 6 to move under the limiting action of the mating end 310. Until the first limiting block 61 and the limiting wheel 66 move, the position of the dial 5 is restricted. During this process, by moving the limiting positioning component 3 and the clamping limiting component 6 in unison, the positioning accuracy of the privacy film and the dial 5 is ensured, and the error generated during film application is minimized. Subsequently, by reversing the activation of the limiting telescopic rod 36, the mating end 310 is moved away from the first mounting housing 312 and the second mounting housing 317, and the limiting mounting base 35 is moved in the opposite direction. At this time, by activating the intermediate telescopic rod 42, the rotating base 43 is moved downward until the privacy film adsorbed on the placement plate 44 is moved downward to the position of the dial 5, and the privacy film is applied to the dial 5. During this process, by moving the limiting mounting base 35 away from the dial 5, the privacy film is prevented from contacting the mounting rod 39, which may cause the edge of the privacy film to be rubbed.

[0055] The mating base 313 is moved into the first limiting groove 64. At this time, the mating tooth 314, after moving, engages with the limiting tooth 315 to push the first mounting housing 312. At the same time, the mating ring 318 is placed inside the second limiting groove 65. When the mating ring 318 moves, it gets stuck inside the limiting ring 316, which drives the first limiting block 61 and the limiting wheel 66 to move respectively. That is, when the first limiting block 61 moves to the position of the dial 5 and the limiting wheel 66 moves to the arc edge position of the dial 5, the dial 5 is positioned. The first telescopic rod 62 and the second telescopic rod 63 are activated to maintain this position and achieve precise positioning of the dial 5.

[0056] When adjusting the position of the mating end 310, the limiting nut 38 is removed from the mounting rod 39 as needed, and the mounting rod 39 is selected with the corresponding limiting through hole 37. At this time, the limiting nut 38 is rotated onto the mounting rod 39 to adjust the position of the mounting rod 39, thereby further adjusting the position of the mating end 310.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-precision bonding process for privacy watch tags, characterized in that: Includes the following steps: Step 1, loading operation: Place the dial (5) on the loading conveyor belt (2) to achieve uniform and constant loading of the dial (5). Place the privacy film on the film application assembly (4) and fix the privacy film through the film application assembly (4). Step 2, lower plate positioning operation, control the limit positioning component (3) to move downward to connect with the clamping limit component (6), start the limit positioning component (3), and drive the clamping limit component (6) to clamp the dial (5); Step 3, film application preparation operation: separate the limiting positioning component (3) and the clamping limiting component (6), vacuum the privacy film on the film application component (4), and then move the privacy film onto the dial (5). Step 4, applying the film: control the start of the film application component (4), move the privacy film down onto the dial (5), and apply the film to the dial (5); The clamping and limiting assembly (6) includes a first limiting block (61), a limiting wheel (66), and a first telescopic rod (62). The first telescopic rod (62) can move laterally relative to the feeding conveyor belt (2), and the end of the first telescopic rod (62) is equipped with a first limiting block (61). The first limiting block (61) is "L" shaped, and a first mounting housing (312) is provided on the first limiting block (61). A first limiting groove (64) is provided on the first mounting housing (312), and the first mounting housing (312) and the mating end (310) are mated. A second telescopic rod (63) is fixed on the mounting bracket on the side of the feeding conveyor belt (2), and the output end of the second telescopic rod (63) is rotatably equipped with a limiting wheel (66). A second mounting housing (317) is installed on the limiting wheel (66). A second limiting groove (65) is provided on the second mounting housing (317), and the second mounting housing (317) and the mating end (310) are mated. A limiting tooth (315) is fixed on the side of the first limiting groove (64). A mating base (313) is fixed on the end of the mounting rod (39), and a mating tooth (314) is installed on the side of the mating base (313). The mating tooth (314) and the limiting tooth (315) are mated and connected. Limiting rings (316) are evenly installed on the side wall of the second limiting groove (65). A mating ring (318) is fixed on the end of the mounting rod (39), and the mating ring (318) and the limiting ring (316) are used in conjunction. The limiting positioning component (3) includes a limiting telescopic rod (36), which is mounted on a limiting mounting base (35). The output end of the limiting telescopic rod (36) is fixed to a limiting base (311). Limiting through holes (37) are evenly opened on the limiting base (311). An installation rod (39) is slidably provided on the limiting through hole (37), and threads are evenly provided on the installation rod (39). A limiting nut (38) is threadedly connected to the installation rod (39). A mating end (310) is fixedly installed at the end of the installation rod (39). The mating end (310) can be selected as a mating tooth (314) or a mating ring (318) as needed.

2. The high-precision attachment process for privacy watch tags according to claim 1, characterized in that, When the limiting positioning component (3) and the clamping limiting component (6) are connected, the installation rod (39) is controlled to move longitudinally by starting the limiting telescopic rod (36) until the mating end (310) enters the limiting groove of the clamping limiting component (6), so that the limiting positioning component (3) and the clamping limiting component (6) are mated and connected.

3. The high-precision attachment process for privacy watch tags according to claim 2, characterized in that, When the limiting positioning component (3) and the clamping limiting component (6) are used together, the limiting positioning component (3) is controlled to move, which drives the position of the clamping limiting component (6) to move until the clamping limiting component (6) adjusts the position of the dial (5) on the feeding conveyor belt (2) until the clamping limiting component (6) clamps and positions the dial (5), the limiting telescopic rod (36) moves in the opposite direction, and the control mating end (310) moves out of the limiting groove.

4. The high-precision attachment process for privacy watch tags according to claim 2, characterized in that, When used at the mating end (310), the limiting groove is provided with a first limiting groove (64) and a second limiting groove (65). The first limiting groove (64) is square and the second limiting groove (65) is circular.

5. The high-precision attachment process for privacy watch tags according to claim 4, characterized in that, When the first limiting groove (64) is in use, the control mating base (313) moves to the inside of the first mounting housing (312). By adjusting the lateral position of the mating base (313), the mating teeth (314) and the limiting teeth (315) are engaged. By the continuous movement of the mating base (313), the control of the first mounting housing (312) drives the first limiting block (61) to move to the side of the dial (5).

6. The high-precision attachment process for privacy watch tags according to claim 4, characterized in that, When the second limiting groove (65) is in use, the control mating ring (318) moves to the inside of the second mounting housing (317), the control mating ring (318) moves laterally, and the mating ring (318) is engaged inside the limiting ring (316). Through the continuous movement of the mating ring (318), the control second mounting housing (317) drives the limiting wheel (66) to move to the arc end of the dial (5).

7. The high-precision attachment process for privacy watch tags according to claim 1, characterized in that, When the film application assembly (4) is started, the vacuum cleaner (46) is started. The vacuum cleaner (46) is used to adsorb dust on the surface of the privacy film on the placement tray (44). The height of the placement tray (44) is controlled by starting the middle telescopic rod (42). The rotating motor (45) is started to control the privacy film after it has been vacuumed to flip to the bottom. The privacy film is controlled to contact the dial (5) by the continuous start of the middle telescopic rod (42) to apply the film to the dial (5).

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