High-precision automatic bidirectional thickness detection mechanism

Abstract

The utility model discloses a kind of high-precision automatic bidirectional thickness detection mechanism, including thickness detection platform, first detection module and second detection module, first detection module includes first detection pressing block, first displacement sensor and lifting driving device, first detection pressing block can be slid downward to be attached in product top surface by its gravity, and product main body thickness is detected by first displacement sensor, lifting driving device is used to drive first detection pressing block to lift;Second detection module includes second detection pressing block, second displacement sensor, lowering driving device and second counterweight, second counterweight is connected to second detection pressing block, second detection pressing block can be slid upward to be attached to product bottom surface by the traction of second counterweight, and product local thickness is detected by second displacement sensor, lowering driving device is used to drive second detection pressing block to lower.The utility model can realize product bidirectional synchronous detection, improve the comprehensiveness and detection efficiency of detection.

Description

Technical Field

[0001] This utility model relates to the field of thickness detection technology, and in particular to a high-precision automatic bidirectional thickness detection mechanism. Background Technology

[0002] In many product sectors, including 3C (computers, communications, and consumer electronics), the battery, as a core energy storage component, directly determines the product's assembly compatibility and reliability. Due to the extremely compact internal space of products, the assembly gaps between the battery and components such as the motherboard and casing are usually very small. Even slight deviations in battery thickness can cause assembly difficulties and incomplete sealing, and may also compress internal circuits, leading to short circuit risks. Therefore, battery thickness testing is a critical quality control step.

[0003] Traditional battery thickness testing technologies focus solely on the main battery area, generally neglecting the thickness of other local structures (such as electrical connectors). These local structures, acting as the connection between the battery and external circuits, directly affect the fit with the motherboard interface if their thickness deviations are inconsistent. However, existing testing methods often have significant limitations: firstly, relying on manual handheld measuring tools (such as micrometers) to measure the main body thickness is inefficient and highly subjective, failing to meet the high-efficiency testing requirements of mass production; secondly, some automated testing equipment still adheres to the logic of measuring only the main body, failing to simultaneously test the main body and local structures, requiring additional testing steps, increasing production costs, and potentially introducing cumulative errors due to secondary positioning. Therefore, it is necessary to improve existing technologies to overcome their shortcomings. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a high-precision automatic bidirectional thickness detection mechanism to overcome the shortcomings of traditional detection technology, such as low detection efficiency and difficulty in meeting the needs of simultaneous high-precision detection of multiple parts.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-precision automatic bidirectional thickness detection mechanism, comprising: Thickness inspection platform, used to place and position the product to be inspected; The first detection module includes a first detection block, a first displacement sensor, and a lifting drive device. The first detection block can slide vertically downward under its own weight to press against the top surface of the product. The first displacement sensor is used to indirectly detect the thickness of the main body of the product by detecting the displacement of the first detection block. The lifting drive device is used to drive the first detection block to lift so that it returns to a preset first initial position. The second detection module includes a second detection block, a second displacement sensor, a descent drive device, and a second counterweight. The second counterweight is connected to the second detection block. The second detection block can slide vertically upward under the traction force of the second counterweight to abut against the bottom surface of the product. The second displacement sensor is used to indirectly detect the local thickness of the product by detecting the displacement of the second detection block. The descent drive device is used to drive the second detection block to descend so that it returns to a preset second initial position.

[0006] As a further improvement of this utility model, the high-precision automatic bidirectional thickness detection mechanism also includes a conveying device. The thickness detection platform is installed on the conveying device, and the conveying device is used to drive the thickness detection platform to carry the product back and forth between the loading station and the detection station. When the product moves to the detection station, the product is just located between the first detection block and the second detection block.

[0007] As a further improvement of this utility model, the conveying device adopts a linear motor or a linear module.

[0008] As a further improvement of this utility model, the top of the thickness detection platform is provided with a positioning block for positioning the product and a vacuum suction cup for adsorbing the product.

[0009] As a further improvement of this utility model, the first detection module further includes a first bracket, a first counterweight, and a plurality of first pulleys. The plurality of first pulleys are rotatably mounted on the first bracket, and a first traction rope is wound around the plurality of first pulleys. The first detection pressure block is fixedly connected to one end of the first traction rope, and the first counterweight is suspended from the other end of the first traction rope. The mass of the first counterweight is less than the mass of the first detection pressure block.

[0010] As a further improvement of this utility model, a vertical plate is provided on the first bracket, the first detection block is slidably installed on the vertical plate in the vertical direction by a slider, and the first displacement sensor is fixed on the vertical plate in the vertical direction with its detection head abutting against the first detection block.

[0011] As a further improvement of this utility model, the lifting drive device is a cylinder, which is fixedly installed on the top of the vertical plate, and a pull rod is fixed on the power output end of the lifting drive device. A first hanging block that is movably engaged with the pull rod is fixed on the first detection block. The lifting drive device is used to pull the first hanging block through the pull rod to drive the first detection block to lift.

[0012] As a further improvement of this utility model, the second detection module further includes a second bracket, a lifting plate, and a plurality of second pulleys. The plurality of second pulleys are rotatably mounted on the second bracket, and a second traction rope is wound around the plurality of second pulleys. One end of the second traction rope is connected to the lifting plate, the second detection pressure block is fixed on the lifting plate, and the second counterweight is suspended from the other end of the second traction rope. The mass of the second counterweight is greater than the sum of the masses of the second detection pressure block and the lifting plate.

[0013] As a further improvement of this utility model, the descent drive device is a cylinder, which is fixedly installed on the second bracket, and a push rod is fixed on the power output end of the descent drive device. A second hanging block that is movably engaged with the push rod is fixed on the lifting plate. The descent drive device is used to push the second hanging block through the push rod to drive the second detection block to descend.

[0014] As a further improvement of this utility model, a detection plate and a guide column are fixed on the lifting plate, the guide column is slidably engaged with the guide sleeve set on the second bracket, and the second displacement sensor is fixed on the second bracket and vertically opposite to the detection plate.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a high-precision automatic bidirectional thickness detection mechanism. By setting a first detection module and a second detection module corresponding to the main body and local structure of the product respectively, bidirectional synchronous detection of the product is realized, which greatly improves the comprehensiveness and efficiency of the detection. At the same time, the first detection block is pressed against the top surface of the product by its own gravity, and the second detection block is attached to the local structure of the bottom surface of the product by the traction force of the second counterweight. Both attachment methods can ensure stable and gentle pressure, which avoids the squeezing damage to the product caused by rigid drive, and ensures the tight contact between the detection block and the product surface, effectively improving the thickness detection accuracy. The lifting drive device and the lowering drive device can respectively drive the first detection block and the second detection block to accurately reset to the preset initial position, ensuring that the starting reference of each detection is consistent, and ensuring the repeatability and reliability of the batch detection process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the high-precision automatic bidirectional thickness detection mechanism of this utility model; Figure 2 This is a perspective view of the thickness detection platform and conveying device in the high-precision automatic bidirectional thickness detection mechanism of this utility model; Figure 3 This is a perspective view of the first detection module in the high-precision automatic bidirectional thickness detection mechanism of this utility model; Figure 4 This is a partial perspective view of the first detection module in the high-precision automatic bidirectional thickness detection mechanism of this utility model; Figure 5 This is a perspective view of the second detection module in the high-precision automatic bidirectional thickness detection mechanism of this utility model.

[0018] Referring to the accompanying drawings, the following explanations are provided: 1. Thickness detection platform; 101. Positioning block; 2. Product; 3. First detection pressure block; 301. First hanging block; 4. First displacement sensor; 5. Lifting drive device; 501. Pull rod; 6. Second detection pressure block; 7. Second displacement sensor; 8. Lowering drive device; 801. Push rod; 9. Second counterweight; 10. Conveying device; 11. Vacuum suction cup; 12. First bracket; 1201. Vertical plate; 13. First counterweight; 14. First pulley; 15. Second bracket; 16. Lifting plate; 1601. Second hanging block; 17. Second pulley; 18. Detection plate; 19. Guide column; 20. Guide sleeve. Detailed Implementation

[0019] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0022] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0023] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0024] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0025] See Figures 1 to 5 This utility model provides a high-precision automatic bidirectional thickness detection mechanism, comprising: a thickness detection platform 1, a first detection module, and a second detection module. The thickness detection platform 1 is used to place and position the product 2 to be detected, the first detection module is used to detect the main body thickness of the product 2, and the second detection module is used to detect the local thickness of the product 2 extending beyond the thickness detection platform 1.

[0026] Specifically, the first detection module includes a first detection block 3, a first displacement sensor 4, and a lifting drive device 5. The first detection block 3 can slide vertically downward under its own weight to press against the top surface of the product 2. The first displacement sensor 4 is used to indirectly detect the thickness of the main body of the product 2 by detecting the displacement of the first detection block 3. The lifting drive device 5 is used to drive the first detection block 3 to lift so that it returns to the preset first initial position.

[0027] The second detection module includes a second detection block 6, a second displacement sensor 7, a descent drive device 8, and a second counterweight 9. The second counterweight 9 is connected to the second detection block 6. The second detection block 6 can slide vertically upward under the traction force of the second counterweight 9 to abut against the partial bottom surface of the product 2 extending from the thickness detection platform 1. The second displacement sensor 7 is used to indirectly detect the local thickness of the product 2 by detecting the displacement of the second detection block 6. The descent drive device 8 is used to drive the second detection block 6 to descend so that it returns to the preset second initial position.

[0028] As can be seen, this utility model achieves bidirectional synchronous detection of the product by setting a first detection module and a second detection module corresponding to the main body and local structure of the product 2, respectively, which greatly improves the comprehensiveness and efficiency of the detection. At the same time, the first detection block 3 is pressed against the top surface of the product 2 by its own weight, and the second detection block 6 is attached to the local structure of the bottom surface of the product 2 by the traction force of the second counterweight 9. Both attachment methods can ensure stable and gentle pressure, which not only avoids the squeezing damage to the product 2 caused by rigid drive, but also ensures a tight fit between the detection block and the surface of the product 2, effectively improving the thickness detection accuracy. The lifting drive device 5 and the lowering drive device 8 can respectively drive the first detection block 3 and the second detection block 6 to accurately reset to the preset initial position, ensuring that the starting benchmark of each detection is consistent, and ensuring the repeatability and reliability of the batch detection process.

[0029] In addition, the high-precision automatic bidirectional thickness detection mechanism of this utility model also includes a conveying device 10.

[0030] like Figure 1 and Figure 2 As shown, the thickness detection platform 1 is installed on the conveying device 10. The conveying device 10 is used to drive the thickness detection platform 1 to carry the product 2 back and forth between the loading station and the detection station. When the product 2 moves to the detection station, the product 2 is just located between the first detection block 3 and the second detection block 6, realizing the automated connection between the loading and unloading process and the detection process. There is no need for manual transfer of the product 2, which greatly adapts to the high-efficiency detection needs of large-scale production.

[0031] Optionally, the conveying device 10 uses a linear motor or a linear module, which can be a ball screw linear module, a synchronous belt linear module, etc.

[0032] See Figure 2The thickness detection platform 1 is equipped with a positioning block 101 for positioning the product 2 and a vacuum suction cup 11 for adsorbing the product 2 on its top. The positioning block 101 can quickly limit the position of the product 2, while the vacuum suction cup 11 further fixes the product 2 through adsorption, forming a dual positioning structure. This effectively solves the problem of easy displacement of the product 2 during the detection process and ensures the stability of the position of the product 2 throughout the detection process. At the same time, the adsorption fixing method avoids the damage to the surface of the product 2 caused by the traditional clamping structure, and can ensure the consistency of the fit between the product 2 and the first detection pressure block 3 and the second detection pressure block 6, reducing the detection error caused by positioning offset and improving the reliability of the detection results.

[0033] See Figure 3 The first detection module also includes a gantry-shaped first support 12, a first counterweight 13, and two first pulleys 14. Both first pulleys 14 are rotatably mounted on the first support 12, and a first traction rope (not shown in the figure) is wound around each pulley 14. The first detection block 3 is fixedly connected to one end of the first traction rope, and the first counterweight 13 is suspended from the other end of the first traction rope. The mass of the first counterweight 13 is less than the mass of the first detection block 3. The first counterweight 13 forms a force balance with the first detection block 3 through the first traction rope, which can balance part of the weight of the first detection block 3, preventing the first detection block 3 from falling directly and damaging the product 2, and making the pressure of the first detection block 3 on the top surface of the product 2 more controllable.

[0034] See Figure 3 and Figure 4 A vertical plate 1201 is provided on the first bracket 12. The first detection block 3 is slidably installed on the vertical plate 1201 along the vertical direction by a slider. The first displacement sensor 4 is fixed on the vertical plate 1201 along the vertical direction and its detection head abuts against the first detection block 3, so that the first displacement sensor 4 can directly collect the displacement data of the first detection block 3, thereby detecting the thickness of the main body of the product 2 and ensuring detection accuracy.

[0035] The lifting drive device 5 is a cylinder, which is fixedly installed on the top of the vertical plate 1201. A pull rod 501 is fixed to the power output end of the lifting drive device 5, and a first disc is provided at the bottom of the pull rod 501. A first hanging block 301 that movably cooperates with the pull rod 501 is fixed on the first detection block 3. The first hanging block 301 has a slot for the pull rod 501 to pass through, and the first disc is located at the bottom of the first hanging block 301. The lifting drive device 5 is used to pull the first hanging block 301 through the first disc of the pull rod 501 to drive the first detection block 3 to lift. The lifting drive device 5 in this utility model adopts a cylinder, which has the characteristics of stable power and rapid response. It can quickly release the first detection block 3. At the same time, the power output end of the lifting drive device 5 is movably engaged with the first hanging block 301 on the first detection block 3 through the pull rod 501. This can avoid rigid interference between the drive mechanism and the first detection block 3, and ensure the accuracy of the first detection block 3 resetting to the initial position. This ensures the consistency of the initial state of each test and improves the reliability of batch testing.

[0036] See Figure 5 The second detection module also includes a second bracket 15, a lifting plate 16, and two second pulleys 17. The two second pulleys 17 are rotatably mounted on the top of the second bracket 15, and a second traction rope (not shown in the figure) is wound around the two second pulleys 17. One end of the second traction rope is connected to the lifting plate 16, the second detection block 6 is fixed on the lifting plate 16, and the second counterweight 9 is suspended from the other end of the second traction rope. The mass of the second counterweight 9 is greater than the sum of the masses of the second detection block 6 and the lifting plate 16, so that the second detection block 6 can be closely attached to the local structure of the bottom surface of the product 2 under the traction force of the second counterweight 9. At the same time, the second detection block 6 is fixed on the lifting plate 16, and the lifting movement is achieved through the cooperation of the second traction rope and the second pulleys 17, ensuring that the second detection block 6 lifts and lowers smoothly, avoiding collision or squeezing damage to the product 2, and adapting to the detection requirements of the precision structure of the battery.

[0037] In this embodiment, the descent drive device 8 also uses a cylinder, which is fixedly installed on the top of the second bracket 15. A push rod 801 is fixed vertically on the power output end of the descent drive device 8, and a second disc is mounted on the push rod 801. A second hanging block 1601, which movably cooperates with the push rod 801, is fixed on the lifting plate 16, and the second disc of the push rod 801 abuts against the top of the second hanging block 1601. The descent drive device 8 is used to push the second hanging block 1601 through the push rod 801 to drive the second detection block 6 to descend. The descent drive device 8 in this invention also uses a cylinder. The cylinder-driven method is reliable and efficient, and can quickly release the second detection block 6 to cooperate with the first detection module, achieving efficient connection of bidirectional detection and further improving the continuity of the detection process. Simultaneously, the power output end of the descent drive device 8 movably cooperates with the second hanging block 1601 on the lifting plate 16 through the push rod 801. This design avoids rigid interference between the drive mechanism and the second detection block 6, effectively ensuring the long-term operational stability of the detection mechanism.

[0038] Furthermore, a detection plate 18 and two guide posts 19 are fixed on the lifting plate 16. The two guide posts 19 slide in cooperation with two guide sleeves 20 set on the second bracket 15, providing precise vertical guidance for the lifting movement of the lifting plate 16, ensuring that the second detection block 6 always moves in the vertical direction, avoiding local thickness detection errors caused by tilting, and improving detection accuracy. The second displacement sensor 7 is fixed on the second bracket 15 and vertically opposite to the detection plate 18. The second displacement sensor 7 stably collects displacement data through the detection plate 18, ensuring the reliability and stability of the detection data.

[0039] The second detection module can be configured in multiple sets to adapt to products of different specifications.

[0040] The working process of this high-precision automatic bidirectional thickness detection mechanism is as follows: First, at the loading station, the thickness detection platform 1 receives the product 2 to be inspected, which is handed over by an external loading mechanism. Next, the conveying device 10 drives the thickness detection platform 1 to move the product 2 to the inspection station, positioning the product 2 precisely between the first inspection block 3 and the second inspection block 6. Then, the lifting drive device 5 drives the pull rod 501 downwards, releasing the restriction on the first inspection block 3. The first inspection block 3 slides vertically downwards under its own weight to press against the top surface of the product 2. The first displacement sensor 4 detects the displacement of the first inspection block 3 to determine the main body thickness of the product 2. Then, the lowering drive device 8 drives the push rod 801 upwards, releasing the restriction on the second inspection block 6. The second inspection block 6 slides vertically upwards under the traction of the second counterweight 9 to abut against the partial bottom surface of the product 2 extending from the thickness detection platform 1. The second displacement sensor 7 detects the displacement of the second inspection block 6 through the inspection plate 18 to determine the local thickness of the product 2. After the inspection is completed, the lifting drive device 5 pulls the first hanging block 301 via the first disc of the pull rod 501 to drive the first inspection block 3 to rise back to the preset first initial position. At the same time, the lowering drive device 8 pushes the second hanging block 1601 via the push rod 801 to drive the second inspection block 6 to descend back to the preset second initial position. Finally, the conveying device 10 drives the thickness inspection platform 1 to carry the product 2 back to the loading station, and the unloading mechanism removes the product 2. This cycle is repeated.

[0041] Therefore, the high-precision automatic bidirectional thickness detection mechanism of this utility model achieves bidirectional synchronous detection of the product by setting up a first detection module and a second detection module corresponding to the main body and local structure of the product 2, respectively, which greatly improves the comprehensiveness and efficiency of the detection. At the same time, the first detection block 3 is pressed against the top surface of the product 2 by its own gravity, and the second detection block 6 is attached to the local structure of the bottom surface of the product 2 by the traction force of the second counterweight 9. Both attachment methods can ensure stable and gentle pressure, which not only avoids the squeezing damage to the product 2 caused by rigid drive, but also ensures a tight fit between the detection block and the surface of the product 2, effectively improving the thickness detection accuracy. The lifting drive device 5 and the lowering drive device 8 can respectively drive the first detection block 3 and the second detection block 6 to accurately reset to the preset initial position, ensuring that the starting reference of each detection is consistent, and ensuring the repeatability and reliability of the batch detection process.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high-precision automatic bidirectional thickness detection mechanism, characterized in that, include: Thickness detection platform (1), used to place and position the product to be inspected (2); The first detection module includes a first detection block (3), a first displacement sensor (4), and a lifting drive device (5). The first detection block (3) can slide vertically downward under its own weight to press against the top surface of the product (2). The first displacement sensor (4) is used to indirectly detect the thickness of the main body of the product (2) by detecting the displacement of the first detection block (3). The lifting drive device (5) is used to drive the first detection block (3) to lift so that it returns to a preset first initial position. The second detection module includes a second detection block (6), a second displacement sensor (7), a descent drive device (8), and a second counterweight (9). The second counterweight (9) is connected to the second detection block (6). The second detection block (6) can slide vertically upward under the traction force of the second counterweight (9) to abut against the bottom surface of the product (2). The second displacement sensor (7) is used to indirectly detect the local thickness of the product (2) by detecting the displacement of the second detection block (6). The descent drive device (8) is used to drive the second detection block (6) to descend so that it returns to a preset second initial position.

2. The high-precision automatic bidirectional thickness detection mechanism according to claim 1, characterized in that, It also includes a conveying device (10), on which the thickness detection platform (1) is installed. The conveying device (10) is used to drive the thickness detection platform (1) to carry the product (2) back and forth between the loading station and the detection station. When the product (2) moves to the detection station, the product (2) is just located between the first detection block (3) and the second detection block (6).

3. The high-precision automatic bidirectional thickness detection mechanism according to claim 2, characterized in that, The conveying device (10) uses a linear motor or a linear module.

4. The high-precision automatic bidirectional thickness detection mechanism according to claim 1, characterized in that, The thickness detection platform (1) is provided with a positioning block (101) for positioning the product (2) and a vacuum suction cup (11) for adsorbing the product (2) on its top.

5. The high-precision automatic bidirectional thickness detection mechanism according to claim 1, characterized in that, The first detection module further includes a first bracket (12), a first counterweight (13) and a plurality of first pulleys (14). The plurality of first pulleys (14) are rotatably mounted on the first bracket (12), and a first traction rope is wound around the plurality of first pulleys (14). The first detection pressure block (3) is fixedly connected to one end of the first traction rope, and the first counterweight (13) is suspended from the other end of the first traction rope. The mass of the first counterweight (13) is less than the mass of the first detection pressure block (3).

6. The high-precision automatic bidirectional thickness detection mechanism according to claim 5, characterized in that, A vertical plate (1201) is provided on the first bracket (12). The first detection block (3) is slidably installed on the vertical plate (1201) in the vertical direction by a slider. The first displacement sensor (4) is fixed on the vertical plate (1201) in the vertical direction and its detection head abuts against the first detection block (3).

7. The high-precision automatic bidirectional thickness detection mechanism according to claim 6, characterized in that, The lifting drive device (5) is a cylinder, which is fixedly installed on the top of the vertical plate (1201). A pull rod (501) is fixed on the power output end of the lifting drive device (5). A first hanging block (301) that is movably engaged with the pull rod (501) is fixed on the first detection block (3). The lifting drive device (5) is used to pull the first hanging block (301) through the pull rod (501) to drive the first detection block (3) to lift.

8. The high-precision automatic bidirectional thickness detection mechanism according to claim 1, characterized in that, The second detection module also includes a second bracket (15), a lifting plate (16), and a plurality of second pulleys (17). The plurality of second pulleys (17) are rotatably mounted on the second bracket (15), and a second traction rope is wound around the plurality of second pulleys (17). One end of the second traction rope is connected to the lifting plate (16), the second detection block (6) is fixed on the lifting plate (16), and the second counterweight (9) is suspended from the other end of the second traction rope. The mass of the second counterweight (9) is greater than the sum of the masses of the second detection block (6) and the lifting plate (16).

9. The high-precision automatic bidirectional thickness detection mechanism according to claim 8, characterized in that, The descent drive device (8) is a cylinder, which is fixedly installed on the second bracket (15). A push rod (801) is fixed on the power output end of the descent drive device (8). A second hanging block (1601) that is movably engaged with the push rod (801) is fixed on the lifting plate (16). The descent drive device (8) is used to push the second hanging block (1601) through the push rod (801) to drive the second detection block (6) to descend.

10. The high-precision automatic bidirectional thickness detection mechanism according to claim 8, characterized in that, The lifting plate (16) is fixed with a detection plate (18) and a guide column (19). The guide column (19) is slidably engaged with the guide sleeve (20) set on the second bracket (15). The second displacement sensor (7) is fixed on the second bracket (15) and is vertically opposite to the detection plate (18).

Images