Scanning type thickness measuring equipment and method for online measurement of glass thickness

Abstract

The invention provides a scanning type thickness measuring device and method for on-line measurement of glass thickness, the scanning type thickness measuring device is used for measuring the thickness of glass on a glass conveying channel, the scanning type thickness measuring device comprises a measuring device, the measuring device comprises a thickness detector for measuring the thickness of the glass in a non-contact mode, and the scanning type thickness measuring device further comprises a linear driving module, a calibration device and a control system. The linear driving module is arranged above the glass conveying channel, the measuring device is installed on the linear driving module, the linear driving module drives the measuring device to linearly move above the glass conveying channel, and the included angle theta between the linear moving direction of the measuring device and the conveying direction of the glass conveying channel is 20-80 degrees; the calibration device comprises a measurement datum plate, and the measurement datum plate is arranged below the linear moving path of the thickness detector and located outside the glass conveying channel; and the control system is in control connection with the linear driving module and the measuring device.

Description

Technical Field

[0001] This invention relates to the field of glass production technology, and in particular to a scanning thickness measuring device and method for online measurement of glass thickness. Background Technology

[0002] Rolled glass is mainly used for encapsulating rolled components. Its thickness affects the refractive index, light transmittance, and structural strength, making the thickness dimension of rolled glass crucial. Currently, some rolled glass production lines use manual offline thickness measurement methods. This involves removing the glass from the production line at the end of the cold-end production line for thickness measurement. This method requires manual cutting of the glass, resulting in glass waste and significant errors in the consistency of the cross-section selected at the measurement location. Other production lines use online thickness gauges based on laser or infrared measurement principles. These gauges perform non-contact measurement of the moving glass above the glass conveyor rollers. While this method can measure glass thickness, the glass is continuously being conveyed while the thickness gauge is measuring above the glass surface, meaning the measured dimension is no longer within the glass's cross-sectional area, leading to poor measurement accuracy. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a scanning thickness measuring device and method for online measurement of glass thickness, which can measure the glass thickness during the transportation process online, with high measurement accuracy and flexible and convenient use.

[0004] To achieve the above objectives, the present invention provides a scanning thickness measuring device for online measurement of glass thickness, used to measure the thickness of glass on a glass conveyor. The device includes a measuring unit comprising a non-contact thickness detector, a linear drive module, a calibration device, and a control system. The linear drive module is positioned above the glass conveyor, and the measuring device is mounted on the linear drive module. The linear drive module drives the measuring device to move linearly above the glass conveyor, with the angle θ between the linear movement direction of the measuring device and the conveying direction of the glass conveyor being 20~80°. The calibration device includes a measuring reference plate positioned below the linear movement path of the thickness detector and outside the glass conveyor. The control system is connected to both the linear drive module and the measuring device.

[0005] Furthermore, the linear drive module is parallel to the glass conveyor.

[0006] Furthermore, it also includes a support beam and hangers mounted on the support beam, the support beam spanning across the glass conveyor, and multiple hangers spaced apart along the support beam, with the linear drive module fixedly mounted on the hangers.

[0007] Furthermore, it also includes a leveling device installed on the support beam, which is connected to the linear drive module and can adjust the parallelism between the linear drive module and the glass on the glass conveyor.

[0008] Furthermore, the levelness adjustment device includes multiple adjustment mechanisms spaced apart along the length of the support beam. Each adjustment mechanism includes an upper connecting plate fixedly connected to the support beam, a lower connecting plate fixedly connected to the linear drive module, and a screw connecting the upper connecting plate and the lower connecting plate. The upper end of the screw is screwed to the upper connecting plate, and the lower end is screwed to the lower connecting plate. The thread directions of the upper and lower ends of the screw are opposite.

[0009] Furthermore, it also includes a start position sensing mechanism and an end position sensing mechanism disposed on the linear drive module. The start position sensing mechanism and the end position sensing mechanism are both communicatively connected to the control system. When the linear drive module drives the measuring device to the start position and the end position, it is detected by the start position sensing mechanism and the end position sensing mechanism respectively. The start position is located upstream of the end position along the conveying direction of the glass conveyor.

[0010] Furthermore, it also includes a calibration position sensing mechanism disposed on the linear drive module, which is detected by the calibration position sensing mechanism when the linear drive module drives the measuring device to a calibration position located above the measuring reference plate.

[0011] Furthermore, the measuring device also includes a mounting plate and an adjustment unit. The mounting plate is connected to the linear drive module, and the thickness detector is mounted on the mounting plate via the adjustment unit, which is capable of adjusting the position of the thickness detector.

[0012] Furthermore, the calibration device also includes a placement plate, a cover plate, and a cover plate driving assembly. The measurement reference plate is placed on the placement plate, and the cover plate driving assembly can drive the cover plate to move so that the cover plate covers the measurement reference plate on the placement plate.

[0013] This invention also provides a scanning thickness measurement method for online glass thickness measurement, using the aforementioned scanning thickness measurement equipment, comprising the following steps:

[0014] S1. Calibration: The control system controls the linear drive module to start moving, driving the measuring device to move above the measuring reference plate, turning on the thickness detector to measure the measuring reference plate, and calibrating the thickness detector according to the measured thickness and the actual thickness of the measuring reference plate.

[0015] S2. Initial settings: Before starting the test, set the initial position and the end position of the measuring device. The initial position and the end position are located on both sides of the glass conveyor, and the initial position is located on the upstream side of the glass conveyor in the conveying direction.

[0016] S3. Scanning and Detection: The control system controls the linear drive module to start operating, and simultaneously activates the thickness detector, driving the measuring device to move from the initial position to the final position, and controls the speed of the measuring device so that the component speed of the measuring device in the glass conveyor direction is equal to the conveying speed of the glass conveyor; the thickness of the glass is determined based on the data detected by the thickness detector.

[0017] As described above, the present invention relates to a scanning thickness measurement device and method, which has the following beneficial effects:

[0018] 1. The inclined linear drive module, with the tilt angle set as needed, allows the measuring device to move synchronously with the glass movement when scanning across it, ensuring that the thickness measurement remains on the same end face and guaranteeing the accuracy of the measurement results. It is flexible in operation and can be applied to glass measurement at different conveying speeds. The calibration device allows for precise calibration or verification of the thickness detector during long-term use, improving measurement accuracy.

[0019] 2. By setting up support beams and hangers, the linear drive module can be installed flexibly and stably. Furthermore, by setting up a leveling adjustment device, the level of the linear drive module can be adjusted flexibly, preventing deviations from occurring after long-term use.

[0020] 3. By setting up multiple sensing mechanisms, the movement of the measuring device can be accurately positioned, thereby ensuring that the measuring device can automatically move to the starting position, ending position and calibration position, realizing fully automated operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the scanning thickness measuring device of the present invention.

[0022] Figure 2 This is a schematic diagram of the motion of the thickness detector in this invention during measurement.

[0023] Figure 3 This is a schematic diagram of the calibration device in this invention.

[0024] Figure 4 This is a schematic diagram of the adjustment mechanism in this invention.

[0025] Figure 5 This is a schematic diagram of the cooling structure of the thickness detector in this invention.

[0026] Explanation of icon numbers:

[0027] 1-Glass conveyor, 2-Glass, 3-Measuring device, 301-Thickness detector, 302-Inlet pipe, 303-Outlet pipe, 4-Linear drive module, 401-Drive source, 5-Calibration device, 501-Placement plate, 502-Measuring reference plate, 503-Cover plate, 504-Cover plate drive assembly, 6-Support beam, 7-Hanger, 8-Adjustment mechanism, 801-Upper connecting plate, 802-Lower connecting plate, 803-Screw, 9-Sensing mechanism, 10-Electrical cabinet, 11-Chain device, 12-Support foot. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0029] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and objectives of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0030] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0031] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0032] See Figures 1 to 5The present invention provides a scanning thickness measuring device for online measurement of glass thickness, which is used to measure the thickness of glass 2 on glass conveyor 1. It can be set at the front end of the cold end production line of glass 2 or at the front end of the cutting roller conveyor. The glass conveyor 1 can be a roller conveyor or other types of conveyor.

[0033] The scanning thickness measurement device of the present invention includes a measuring device 3, which includes a thickness detector 301 for non-contact measurement of the thickness of glass 2. The thickness detector 301 can use existing instruments and achieve non-contact measurement based on infrared or ultrasonic thickness measurement principles. It also includes a linear drive module 4, a calibration device 5, and a control system. The linear drive module 4 is positioned above the glass conveyor 1, and the measuring device 3 is mounted on the linear drive module 4. The linear drive module 4 drives the measuring device 3 to move linearly above the glass conveyor 1, and the angle θ between the linear movement direction of the measuring device 3 and the conveying direction of the glass conveyor 1 is 20~80°. The calibration device 5 includes a measuring reference plate 502, which is positioned below the linear movement path of the thickness detector 301 and outside the glass conveyor 1. The control system is connected to both the linear drive module 4 and the measuring device 3. The measuring reference plate 502 is a glass plate of standard thickness, and its thickness can be set according to actual needs.

[0034] The scanning thickness measurement method for measuring the thickness of glass 2 on glass conveyor 1 using the scanning thickness measurement device of the present invention includes the following steps:

[0035] S1. Calibration: The control system controls the linear drive module 4 to start operating, moving the measuring device 3 above the measuring reference plate 502, activating the thickness detector 301 to measure the measuring reference plate 502, and calibrating the thickness detector 301 based on the measured thickness and the actual thickness of the measuring reference plate 502. Specifically, if there is a deviation between the measured thickness and the actual thickness of the measuring reference plate 502, the thickness detector 301 can be reset to eliminate the deviation, or the deviation can be used as a compensation correction value for subsequent measurements to achieve calibration.

[0036] S2. Initial Setting: Before starting the detection, set the initial and final positions of the measuring device 3. The initial and final positions are located on both sides of the glass conveyor 1, with the initial position located upstream of the glass conveyor 1 in the conveying direction. Preferably, the initial position is located on the operating side of the conveyor rollers. Both the initial and final positions are appropriately spaced from the edges of the glass conveyor 1, allowing the thickness detector 301 to have a certain acceleration stroke when moving from the initial position to above the glass 2, and a certain deceleration stroke when moving from above the glass 2 to the final position.

[0037] S3. Scanning and Detection: The control system controls the linear drive module 4 to start operating, simultaneously activating the thickness detector 301, driving the measuring device 3 to move from the initial position to the final position, and controlling the speed of the measuring device 3 so that the component of the measuring device 3's speed in the glass conveyor 1's conveying direction is equal to the conveying speed of the glass conveyor 1. See [link to relevant documentation]. Figure 2 Let V1 be the conveying speed of the glass conveyor 1, V2 be the moving speed of the measuring device 3, and V be the component of the speed in the conveying direction of the glass conveyor 1. 2x That is, V1=V 2x The speed of the linear drive module 4 and the conveying speed of the glass conveyor 1 can be coordinated and controlled by a control system. The thickness detector 301 can be set with an appropriate sampling frequency and number of sampling points. Based on the data detected by the thickness detector 301, the thickness of the glass 2 is determined, and the width of the glass 2 can also be obtained based on the sampling data. Preferably, the linear drive module 4 first drives the measuring device 3 to accelerate from the initial position, so that its speed reaches V2 when it reaches above the glass 2. After the detection is completed, the linear drive module 4 promptly drives the measuring device 3 to decelerate and finally stop at the termination position.

[0038] Because the measuring device 3 and the glass 2 always move synchronously in the conveying direction, the thickness detector 301 moves from one side of the glass 2 to the other, and the measuring point always remains on the same cross-section perpendicular to the length direction of the glass 2 (i.e., the conveying direction), thus ensuring the accuracy of the detection results. During long-term use, the measuring device 3 can be periodically moved above the measuring reference plate 502 for calibration. Furthermore, the moving speed of the measuring device 3 can be adjusted according to different conveying speeds of the glass 2, making it flexible and convenient to use and meeting the needs of different working conditions. After completing one scan measurement, the measuring device 3 returns to its initial position, ready for the next scan measurement.

[0039] See Figures 1 to 5 The present invention will be further described below with reference to a specific embodiment:

[0040] See Figure 1In this embodiment, as a preferred design, the linear drive module 4 includes a linear guide rail, a slider, a transmission mechanism, and a drive source 401. The linear guide rail spans the entire width of the glass conveyor 1, the slider is slidably mounted on the linear guide rail, and the drive source 401 drives the slider to slide linearly on the linear guide rail via the transmission mechanism. Both the drive source 401 and the transmission mechanism can adopt existing suitable structures, such as a motor and a lead screw transmission mechanism. The linear drive module 4 can also adopt other existing designs. By controlling the angle θ between the linear guide rail and the conveying direction of the glass conveyor 1, the angle θ between the linear movement direction of the measuring device 3 and the conveying direction of the glass conveyor 1 can be determined. In this embodiment, the linear drive module 4 is parallel to the glass conveyor 1, that is, the linear guide rail is parallel to the glass conveyor 1, so that the linear movement direction of the measuring device 3 is parallel to the glass conveyor 1. This allows for better control of the moving speed V2 of the measuring device 3 based on the conveying speed V1 of the glass conveyor 1, ensuring that V2*sinθ=V1.

[0041] See Figure 1 In this embodiment, as a preferred design, the scanning thickness measuring device further includes a support beam 6 and a hanger 7 mounted on the support beam 6. The support beam 6 spans across the glass conveyor 1, and multiple hangers 7 are spaced apart along the support beam 6. The linear drive module 4 is fixedly mounted on the hanger 7 to ensure the installation stability of the linear drive module 4. Furthermore, the upper end of the hanger 7 is fixedly connected to the support beam 6, and the lower end has a vertically extending strip hole. Bolts are passed through the strip hole and screwed into the linear guide rail of the linear drive module 4, thereby achieving a fixed connection of the linear drive module 4. Moreover, after loosening the bolts, the height position of the linear drive module 4 on the hanger 7 can be finely adjusted, making it more convenient and flexible to use.

[0042] See Figure 1 In this embodiment, as a preferred design, the scanning thickness measuring device further includes a leveling adjustment device installed on the support beam 6. The leveling adjustment device is connected to the linear drive module 4 and can adjust the parallelism between the linear drive module 4 and the glass 2 on the glass conveyor 1. Further, the leveling adjustment device includes multiple adjustment mechanisms 8 spaced apart along the length of the support beam 6, see [link to relevant documentation]. Figure 4The adjustment mechanism 8 includes an upper connecting plate 801 fixedly connected to the support beam 6, a lower connecting plate 802 fixedly connected to the linear drive module 4, and a screw 803 connecting the upper connecting plate 801 and the lower connecting plate 802. The upper end of the screw 803 is screwed to the upper connecting plate 801, and the lower end is screwed to the lower connecting plate 802. The threads of the upper and lower ends of the screw 803 are in opposite directions. By rotating the screw 803, the upper connecting plate 801 and the lower connecting plate 802 can be separated or brought closer together, which means that the distance between the linear drive module 4 and the support beam 6 at each adjustment mechanism 8 can be adjusted. Through the coordinated work of each adjustment mechanism 8, the parallelism between the linear drive module 4 and the glass 2 on the glass conveyor 1 can be adjusted. During adjustment, first loosen the connection between the linear drive module 4 and the hanger 7, adjust the linear drive module 4, and then fix the linear drive module 4 and the hanger 7. After the linear drive module 4 has been working for a period of time, the vibration of the equipment will cause the horizontality of the linear drive module 4 to deviate. Without disassembling the equipment, the horizontality of the module can be precisely adjusted by the horizontality adjustment device.

[0043] See Figure 1 In this embodiment, as a preferred design, the scanning thickness measuring device further includes a sensing mechanism 9 disposed on the linear drive module 4 for moving and positioning the measuring device 3. Multiple sensing mechanisms 9 may be configured (see attached diagram). Figure 1 (Only one is shown in the image). Further, the two sensing mechanisms 9 are a start position sensing mechanism and an end position sensing mechanism, both of which are communicatively connected to the control system. When the linear drive module 4 moves the measuring device 3 to the start position and end position, respectively, it is detected by the start position sensing mechanism and the end position sensing mechanism, and sends signals to the control system. The start position is located upstream of the end position along the conveying direction of the glass conveyor 1. The start position and end position are located on opposite sides of the glass conveyor 1, so the angle between the moving direction of the measuring device 3 from the start position to the end position and the conveying direction of the glass conveyor 1 is θ. Through the start position sensing mechanism 9 and the end position sensing mechanism 9, the control system can control the measuring device 3 to accurately stop at the start position and end position based on the sensing signals, achieving automated operation.

[0044] See Figure 1 In this embodiment, as a preferred design, one of the sensing mechanisms 9 on the linear drive module 4 is a calibration position sensing mechanism 9. When the linear drive module 4 drives the measuring device 3 to the calibration position located above the measuring reference plate 502, it is detected by the calibration position sensing mechanism 9, triggering a sensing signal and sending it to the control system. The control system can control the linear drive module 4 to drive the measuring device 3 to move accurately and stop at the calibration position according to the signal, thereby realizing intelligent control.

[0045] See Figure 1 In this embodiment, as a preferred design, the measuring device 3 further includes a mounting plate and an adjustment section. The mounting plate is connected to the slider of the linear drive module 4. The thickness detector 301 is mounted on the mounting plate via the adjustment section, and the adjustment section can adjust the position of the thickness detector 301, specifically including the height position and the detection angle position, making it more flexible and convenient to use. The mounting plate is preferably made of aluminum, which reduces the overall movement weight.

[0046] See Figure 5 In this embodiment, the measuring device 3 further includes a cooling chamber, in which the thickness detector 301 is disposed. The cooling chamber is connected to an inlet pipe 302 and an outlet pipe 303. Cooling water is passed into the cooling chamber through the inlet pipe 302 and the outlet pipe 303. Since the ambient temperature of the thickness detector 301 is generally high during operation, cooling the thickness detector 301 can extend its service life.

[0047] In this embodiment, see Figure 1 and Figure 3 As a preferred design, the calibration device 5 also includes a placement plate 501, a cover plate 503, and a cover plate driving assembly 504. The measurement reference plate 502 is disposed on the placement plate 501. The cover plate driving assembly 504 can be a cylinder, capable of moving the cover plate 503 to cover the measurement reference plate 502 on the placement plate 501. When the thickness detector 301 is not being calibrated, the cover plate 503 covers the measurement reference plate 502, providing protection. When calibration is required, the cover plate 503 is moved away from the placement plate 501.

[0048] In this embodiment, see Figure 1 The control system includes a host, display screen, driver, and PLC, capable of receiving signals and issuing control commands, and has functions such as data storage and processing calculations. The display screen can show operating information such as the detected glass thickness and width, as well as the working position or other working status information of the measuring device 3. It also includes an electrical cabinet 10, installed on the operating side of the glass conveyor 1. The host, display screen, driver, and other components of the control system can be housed in the electrical cabinet 10. The electrical cabinet 10 can also contain a power supply to provide power to the scanning thickness measuring equipment.

[0049] In this embodiment, see Figure 1As a preferred design, one end of the support beam 6 is mounted on the support foot 11, and the other end is mounted on the electrical cabinet 10, thus using the electrical cabinet 10 as a support leg to simplify the mechanism. The calibration device 5 can also be mounted on the outer surface of the electrical cabinet 10. Adjustment bolts are provided at the bottom of both the support foot 11 and the electrical cabinet 10 to adjust the height of the support beam 6. Preferably, the angle between the support beam 6 and the conveying direction of the glass conveyor 1 is adjustable. This allows for flexible adjustment of the angle θ between the linear movement direction of the measuring device 3 and the conveying direction of the glass conveyor 1, based on the conveying speed of the glass conveyor 1. The preferred range of the angle θ is 20~80°.

[0050] In this embodiment, see Figure 1 As a preferred design, a cable carrier device 11 is also included. The cable carrier device is mounted on the support beam 6 and connected to the slider of the linear drive module 4, enabling it to move with the measuring device 3. The wires (for power supply and signal transmission) and hoses (for cooling water) connected to the measuring device 3 can be installed in the cable carrier device 11, allowing them to move with the measuring device 3, thus standardizing the layout of wiring and piping and avoiding tangling problems caused by the movement of the measuring device 3.

[0051] As can be seen from the above, the scanning thickness measurement device and method of the present invention have the following beneficial effects:

[0052] 1. The inclined linear drive module 4, with the tilt angle set as needed, allows the measuring device 3 to move synchronously with the glass 2 when scanning across it, thus ensuring that the thickness measurement remains on the same end face, ensuring the accuracy of the measurement results. It is flexible in operation and can be applied to the measurement of glass 2 at different conveying speeds. The calibration device 5 can accurately calibrate or verify the thickness detector 301 during long-term use, improving the measurement accuracy.

[0053] 2. By setting up support beam 6 and hanger 7, the linear drive module 4 can be installed flexibly and stably. Furthermore, by setting up a leveling adjustment device, the level of the linear drive module 4 can be adjusted flexibly to avoid deviations in the equipment after long-term use.

[0054] 3. By setting multiple sensing mechanisms 9, the movement of the measuring device 3 can be accurately positioned, thereby ensuring that the measuring device 3 can automatically move to the starting position, the ending position and the calibration position, and realize fully automated operation.

[0055] In summary, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0056] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A scanning thickness measuring device for online measurement of glass thickness, used to measure the thickness of glass (2) on a glass conveyor (1), comprising a measuring device (3), said measuring device (3) including a non-contact thickness detector (301) for measuring the thickness of glass (2), characterized in that: It also includes a linear drive module (4), a calibration device (5), and a control system. The linear drive module (4) is set above the glass conveyor (1). The measuring device (3) is installed on the linear drive module (4). The linear drive module (4) drives the measuring device (3) to move linearly above the glass conveyor (1). The angle between the linear movement direction of the measuring device (3) and the conveying direction of the glass conveyor (1) is θ, which is 20~80°. The calibration device (5) includes a measuring reference plate (502). The measuring reference plate (502) is set below the linear movement path of the thickness detector (301) and is located outside the glass conveyor (1). The control system is connected to both the linear drive module (4) and the measuring device (3).

2. The scanning thickness measuring device according to claim 1, characterized in that: The linear drive module (4) is parallel to the glass conveyor (1).

3. The scanning thickness measuring device according to claim 1 or 2, characterized in that: It also includes a support beam (6) and a hanger (7) installed on the support beam (6), the support beam (6) spanning across the glass conveyor (1), the hangers (7) being multiple and spaced apart along the support beam (6), and the linear drive module (4) being fixedly installed on the hanger (7).

4. The scanning thickness measuring device according to claim 3, characterized in that: It also includes a leveling device installed on the support beam (6), which is connected to the linear drive module (4) and can adjust the parallelism between the linear drive module (4) and the glass (2) on the glass conveyor (1).

5. The scanning thickness measuring device according to claim 4, characterized in that: The leveling adjustment device includes multiple adjustment mechanisms (8) spaced apart along the length of the support beam (6). Each adjustment mechanism (8) includes an upper connecting plate (801) fixedly connected to the support beam (6), a lower connecting plate (802) fixedly connected to the linear drive module (4), and a screw (803) connecting the upper connecting plate (801) and the lower connecting plate (802). The upper end of the screw (803) is screwed to the upper connecting plate (801), and the lower end is screwed to the lower connecting plate (802). The thread directions of the upper and lower ends of the screw (803) are opposite.

6. The scanning thickness measuring device according to claim 1, characterized in that: It also includes a start position sensing mechanism and an end position sensing mechanism set on the linear drive module (4), both of which are connected to the control system. When the linear drive module (4) drives the measuring device (3) to the start position and the end position, it is detected by the start position sensing mechanism and the end position sensing mechanism respectively, and the start position is located upstream of the end position along the conveying direction of the glass conveyor (1).

7. The scanning thickness measuring device according to claim 1 or 6, characterized in that: It also includes a calibration position sensing mechanism disposed on the linear drive module (4), which is detected by the calibration position sensing mechanism when the linear drive module (4) drives the measuring device (3) to move to the calibration position above the measuring reference plate (502).

8. The scanning thickness measuring device according to claim 1, characterized in that: The measuring device (3) also includes a mounting plate and an adjustment unit. The mounting plate is connected to the linear drive module (4). The thickness detector (301) is mounted on the mounting plate through the adjustment unit, and the adjustment unit can adjust the position of the thickness detector (301).

9. The scanning thickness measuring device according to claim 1, characterized in that: The calibration device (5) further includes a placement plate (501), a cover plate (503), and a cover plate driving assembly (504). The measurement reference plate (502) is disposed on the placement plate (501), and the cover plate driving assembly (504) can drive the cover plate (503) to move so that the cover plate (503) covers the measurement reference plate (502) on the placement plate (501).

10. A scanning thickness measurement method for online measurement of glass thickness, characterized in that: The thickness measurement is performed using a scanning thickness measuring device as described in any one of claims 1 to 9, and includes the following steps: S1. Calibration: The control system controls the linear drive module (4) to start moving, driving the measuring device (3) to move above the measuring reference plate (502), turning on the thickness detector (301) to measure the measuring reference plate (502), and calibrating the thickness detector (301) according to the measured thickness and the actual thickness of the measuring reference plate (502). S2. Initial setting: Before starting the test, set the initial position and the end position of the measuring device (3). The initial position and the end position are located on both sides of the glass conveyor (1), and the initial position is located on the upstream side of the glass conveyor (1) in the conveying direction. S3, Scanning and Detection: The control system controls the linear drive module (4) to start operating, and at the same time turns on the thickness detector (301), driving the measuring device (3) to move from the initial position to the end position, and controlling the speed of the measuring device (3) so that the component speed of the measuring device (3) in the conveying direction of the glass conveyor (1) is equal to the conveying speed of the glass conveyor (1); the thickness of the glass (2) is determined based on the data detected by the thickness detector (301).

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