A processing apparatus for accurately controlling the thickness of glass

Abstract

The application relates to the technical field of glass production detection devices, and discloses a processing equipment capable of accurately controlling glass thickness, which comprises a conveying belt and a thickness detector, the conveying belt is used for conveying a glass plate to the lower side of the thickness detector, a jumping piece is arranged at the bottom of the thickness detector, the jumping piece can generate different displacement amounts according to the different thicknesses of the glass plate, the thicker the glass plate, the greater the displacement amount of the jumping piece, the displacement of the jumping piece is upward movement, an elastic bag is arranged above the jumping piece, a liquid level pipe is arranged above the elastic bag, the elastic bag is filled with liquid, when the jumping piece is upwardly displaced, the elastic bag can be extruded, the liquid in the elastic bag flows to the liquid level pipe, the liquid volume of the liquid level pipe is increased, the liquid level is raised, the conveying belt is composed of rolling rollers and rolling roller air bags, the rolling roller air bags are wrapped outside the rolling rollers, the rolling rollers are driven to rotate to drive the glass plate to move, and the rolling roller air bags are provided with air charging devices to keep the internal gas amount unchanged.

Description

Technical Field

[0001] This invention relates to the field of glass production and testing equipment, specifically to a processing device for accurately controlling glass thickness. Background Technology

[0002] Flat glass, also known as clear glass or plain glass, is a flat glass product without any further processing. It possesses properties such as light transmission, transparency, heat insulation, sound insulation, wear resistance, and resistance to weathering. Based on different production methods, flat glass can be divided into ordinary flat glass and float glass. Flat glass used in monitors typically refers to specially processed glass to meet the stringent requirements of monitors for clarity, transparency, impact resistance, and scratch resistance. This glass is often produced using the float glass process, resulting in a particularly smooth surface, very uniform thickness, and minimal optical distortion. Flat glass used in monitors... During the production process, it may also need to undergo processes such as cutting, CNC precision carving, thinning, tempering, coating, and printing to give it more functions and characteristics. For example, tempering can significantly improve the strength and impact resistance of glass; coating can enhance the light transmittance and anti-reflective ability of glass; and printing can form various patterns and logos on the glass surface. Flat glass for displays is widely used in various electronic devices, such as mobile phones, tablets, televisions, and computer monitors. As a protective layer for the screen, it not only improves the durability and aesthetics of the device, but also provides users with a better visual experience.

[0003] The flat glass used in display devices is generally made by cutting large pieces of glass and then processing them to a thickness of about 0.5mm. Currently, the thickness and flatness of glass are usually measured by laser. However, since the glass sheets are large in area when they are produced, multiple measurements are required. Whether it is a handheld laser measurement or an interferometric measurement, it is quite cumbersome and difficult to measure the thickness of the glass sheets on the production line. It needs to be measured separately, which increases the workflow and reduces work efficiency. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a processing device for accurately controlling glass thickness, which has the advantage of amplifying and detecting minute changes in glass thickness, thus solving the problem of glass thickness detection.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned objective of magnifying and detecting minute changes in glass thickness, this invention provides the following technical solution: a processing device for accurately controlling glass thickness, comprising a conveyor belt and a thickness detector. The conveyor belt transports a glass plate to a position below the thickness detector. A jumping element is installed at the bottom of the thickness detector. This jumping element can generate different displacements according to the thickness of the glass plate; the thicker the glass plate, the greater the displacement of the jumping element. The displacement of the jumping element is upward. An elastic bladder is provided above the jumping element, and a liquid level tube is located above the elastic bladder. The elastic bladder is filled with liquid. When the jumping component moves upward, it can squeeze the elastic bladder, causing the liquid inside the elastic bladder to flow to the liquid level tube, increasing the liquid volume in the liquid level tube and raising the liquid level. The ratio of the horizontal cross-section of the elastic bladder to that of the liquid level tube is greater than 10. The conveyor belt consists of rolling rollers and rolling roller air bladders. The rolling roller air bladders cover the outside of the rolling rollers and are driven to rotate, moving the glass plate. The rolling roller air bladders are equipped with an inflation device, which can keep the internal gas volume constant, reduce the deformation generated when the rolling roller air bladders transport glass, and reduce the error caused by the deformation of the air bladders during glass thickness measurement.

[0008] The jumping element is a magnet. Before the glass plate is transported to the thickness measuring instrument, a magnetic film is covered on the surface of the glass plate by a worker. The magnetic film generates the same magnetism as the jumping element. When the glass plate is transported to the bottom of the thickness measuring instrument, the jumping element is repelled by the magnetic force and moves upward, squeezing the elastic bladder.

[0009] The end of the conveyor belt is equipped with a magnetic adsorption plate, which can generate magnetic force and adsorb the magnetic film covering the surface of the glass plate.

[0010] The jumping component is a column that can slide up and down. The lower end of the jumping component has an arc-shaped end, and the upper end has a pressure plate. When the glass plate is transported to the bottom of the thickness detector, the jumping component drives the pressure plate to move upward and squeeze the elastic bladder.

[0011] A limiting component is provided below the pressure plate and on the side of the jumping member. The limiting component can adjust its own length and limit the minimum horizontal height of the pressure plate when no glass plate passes under the jumping member.

[0012] The inner wall of the liquid level tube has vertically arranged wire ends. The solution inside the elastic bladder is a conductive solution. When the liquid level in the liquid level tube rises, the wire ends become conductive after contacting the solution.

[0013] A coiled metal wire is vertically arranged on the inner wall of the liquid level tube, and a float is provided inside the liquid level tube. The float floats on the liquid surface of the liquid level tube and has a sliding end. The sliding end moves up and down with the float on the metal wire, changing the number of coils that are conducting in the metal wire.

[0014] One airbag is wrapped around each roller, and the width of the airbag is greater than the width of the glass plate being transported.

[0015] The rolling roller airbag is circular in shape, and at least three rolling roller airbags are wrapped around one rolling roller, with each rolling roller airbag not affecting the others.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a processing device for accurately controlling glass thickness, which has the following beneficial effects:

[0018] 1. This processing equipment for accurately controlling glass thickness uses a displacement element that adjusts according to the glass sheet thickness. This displacement is converted into a change in the liquid level in the liquid level tube by squeezing the elastic bladder. Since the liquid is incompressible, the change in liquid level directly reflects the displacement of the displacement element, i.e., the distance between the upper surface of the glass sheet and the displacement element. This change in liquid level amplifies the change in glass thickness, making the detection more precise. The design of the displacement element allows it to automatically adjust the displacement according to the actual thickness of the glass sheet without manual intervention or pre-setting. This adaptability ensures that the system can accurately respond and measure regardless of changes in glass sheet thickness. The gas content in the rolling roller bladder is maintained by an inflation device to prevent significant deformation of the bladder during transportation, thus ensuring the safety of the glass sheet. The stability and accuracy during the conveying process reduce errors caused by deformation of the bottom support during thickness measurement. Both the liquid level tube and the air pressure detection device have real-time monitoring capabilities, which can immediately capture any minute changes and convert them into quantifiable data. The integrated data processing unit can quickly analyze this data and calculate the thickness of the glass plate in a very short time, realizing real-time and continuous monitoring of the glass plate thickness. This improves production efficiency and the accuracy of quality control. The rapid response capability helps to promptly detect and correct deviations in the production process, reducing the defect rate and waste. At the same time, the use of the conveyor belt allows the glass thickness measurement to be completed during the conveying process, greatly improving the detection efficiency and enabling unqualified glass to be transported elsewhere in a timely manner via the conveyor belt.

[0019] 2. This processing equipment for accurately controlling glass thickness utilizes a magnetic film covering the glass plate surface. When the film passes over a moving part (magnet), the magnetic repulsion between them causes the moving part to move upwards. As the distance between the magnetic film and the moving part decreases, the repulsive force increases sharply. This non-linear force-distance relationship allows for significant displacement changes even with minute thickness variations. Because the magnetic repulsive force increases faster over short distances, even minute changes in glass plate thickness can be accurately detected by the system, improving measurement sensitivity and accuracy. This enables the system to measure glass plate thickness more precisely, especially for applications requiring extremely high precision, such as optical glass and electronic display glass. The use of the magnetic film reduces the manual adjustment and calibration steps required in traditional measurement methods; workers only need to cover the glass plate surface with a layer of magnetic film. With the magnetic film, the remaining measurement process is completed automatically by the system. The magnetic adsorption plate at the end of the conveyor belt can easily adsorb the magnetic film from the glass plate surface, facilitating subsequent recycling and processing. This further simplifies the operation process, improves production efficiency, reduces errors and losses caused by improper manual operation, reduces the labor intensity and workload of workers, and improves the comfort and safety of the working environment. The magnetic repulsion effect realizes a near-non-contact measurement method, reducing wear and damage caused by direct contact in traditional mechanical measurement. The magnetic film not only serves as a measurement medium but also protects the glass plate surface, preventing other potential scratches or contamination, extending the service life of the glass plate and measuring equipment, reducing maintenance costs, ensuring the surface quality of the glass plate, and improving the overall quality and market competitiveness of the product.

[0020] 3. This processing equipment for accurately controlling glass thickness uses a float that always floats on the surface of the liquid in the liquid level tube. Therefore, its position is completely aligned with the liquid level. When the liquid level rises or falls, the float rises or sinks accordingly. The position of the sliding end on the metal coil changes with the movement of the float, thus changing the number of coils in the metal coil that are conducting. This change is similar to the working principle of a sliding rheostat, enabling the system to continuously and accurately detect the liquid level. It provides continuous, stepless liquid level position information, allowing the system to more accurately control and monitor the thickness of the glass plate, improving measurement accuracy and resolution. Especially in applications requiring high-precision measurement, compared to other complex liquid level detection mechanisms, the combination of the float and metal coil is relatively simple, reducing the risk of mechanical wear and failure, improving system stability and reliability, and reducing downtime and maintenance costs due to equipment failure. Because the float's position is aligned with the liquid level, the liquid level height can be intuitively judged by observing the float's position. This intuitiveness makes equipment debugging and maintenance much simpler. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the thickness measuring instrument according to Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the liquid level tube structure according to Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the airbag structure according to Embodiment 1 of the present invention;

[0025] Figure 5 This is a schematic diagram of the thickness measuring instrument structure according to Embodiment 2 of the present invention;

[0026] Figure 6 This is a schematic diagram of the actuating component structure in Embodiment 2 of the present invention;

[0027] Figure 7 This is a schematic diagram of the movement of the jumping component in Embodiment 2 of the present invention;

[0028] Figure 8 This is a schematic diagram of the liquid level tube structure in Embodiment 2 of the present invention.

[0029] In the diagram: 1. Conveyor belt; 2. Thickness gauge; 11. Rolling roller; 21. Jumping component; 22. Elastic bladder; 23. Liquid level pipe; 111. Rolling roller air bladder; 211. Pressure plate; 212. End; 213. Limiting component; 231. Wire end; 232. Metal coil; 233. Buoy; 2331. Sliding end. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] Please see Figures 1-2This processing equipment for accurately controlling glass thickness includes a conveyor belt 1 and a thickness gauge 2. The conveyor belt 1 transports the glass plate to the bottom of the thickness gauge 2. The thickness gauge 2 has a jumping element 21 at its bottom. The jumping element 21 can generate different displacements according to the thickness of the glass plate; the thicker the glass plate, the greater the displacement of the jumping element 21. The displacement of the jumping element 21 is upward. An elastic bladder 22 is located above the jumping element 21, and a liquid level tube 23 is located above the elastic bladder 22. The bladder 22 is filled with liquid. The ratio of the horizontal cross-section of the elastic bladder 22 to that of the liquid level tube 23 is greater than 10. The conveyor belt 1 is composed of a rolling roller 11 and a rolling roller air bladder 111. The rolling roller air bladder 111 covers the outside of the rolling roller 11 and is driven by the rolling roller 11 to rotate and move the glass plate. The rolling roller air bladder 111 is equipped with an inflation device to keep the internal gas volume constant, reduce the deformation generated when the rolling roller air bladder 111 transports the glass, and reduce the error caused by the deformation of the air bladder during the glass thickness measurement process.

[0033] The array direction of the jumping element 21 is perpendicular to the transport direction of the glass plate (the detailed view shows a longitudinal cross-sectional view of the thickness measuring instrument 2). When there is a change in the thickness of the glass plate surface, the jumping element 21 will be displaced. When the jumping element 21 is displaced upward, it squeezes the elastic bladder 22, causing the liquid in the elastic bladder 22 to flow to the liquid level tube 23, increasing the liquid volume in the liquid level tube 23 and raising the liquid level. The change in the liquid level in the liquid level tube 23 is detected, and the change in the liquid level reflects the distance between the upper surface of the glass plate and the jumping element 21. At the same time, the outer side of the rolling roller 11 used to transport the glass plate is covered. With a rolling roller airbag 111, when the glass plate is placed on the rolling roller airbag 111, the liquid level tube 23 has a real-time monitoring function, which can immediately capture any minute changes and convert them into quantifiable data, realizing real-time and continuous monitoring of the glass plate thickness, improving production efficiency and quality control accuracy. The rapid response capability helps to detect and correct deviations in the production process in a timely manner, reducing the defect rate and waste. By changing the liquid level in the liquid level tube 23, the change in glass thickness is amplified. Changing the diameter of the liquid level tube 23 can adjust the sensitivity of the liquid level change.

[0034] See Figure 2The agitator 21 is a magnet. Before the glass plate is transported to the thickness measuring instrument 2, a magnetic film is applied to the surface of the glass plate by a worker. The magnetic film generates the same magnetism as the agitator 21. When the glass plate is transported below the thickness measuring instrument 2, the agitator 21 is repelled by the magnetic force and moves upward, squeezing the elastic bladder 22. The end of the conveyor belt 1 is equipped with a magnetic adsorption plate. The magnetic adsorption plate can generate magnetic force and attract the magnetic film covering the surface of the glass plate. The closer the film covering the surface of the glass plate is to the agitator 21, the greater the repulsive force generated, and the more obvious the squeezing of the elastic bladder by the agitator 21 is. Moreover, the repulsive force generated by the magnetic force increases even more when the two magnets are close to each other. Since the magnetic repulsive force increases faster at close range, even a small change in the thickness of the glass plate can be accurately captured by the system, thereby improving the sensitivity and accuracy of the measurement. The magnetic repulsive effect realizes an approximately non-contact measurement method, reducing the wear and damage caused by direct contact in traditional mechanical measurement.

[0035] See Figure 3 A coiled metal coil 232 is vertically arranged on the inner wall of the liquid level tube 23, and a float 233 is provided inside the liquid level tube 23. The float 233 floats on the liquid surface of the liquid level tube 23. The float 233 has a sliding end 2331, which moves up and down with the float 233 on the metal coil 232, changing the number of coils that are conducting in the metal coil 232, forming an effect similar to a sliding rheostat. The float 233 always floats on the liquid surface of the liquid level tube 23, so its position is completely consistent with the liquid surface position. When the liquid level rises or falls, the float will rise or sink accordingly, providing continuous and stepless liquid surface position information. This allows the system to more accurately control and monitor the thickness of the glass plate, improving the measurement accuracy and resolution, especially in applications requiring high-precision measurement.

[0036] See Figure 4 The rolling roller airbag 111 is annular, and at least three rolling roller airbags 111 are wrapped around one rolling roller 11. Each rolling roller airbag 111 does not affect the others, so independent control of each airbag can be achieved. This design allows the system to adjust the air pressure of each airbag according to different transportation needs or the characteristics of the glass plate (such as thickness, weight, etc.) to achieve the best support effect and transportation stability. Since each rolling roller airbag is an independent unit, maintenance and replacement are more convenient and efficient. Individual airbags can be inspected and repaired without disassembling the entire rolling roller or conveyor belt.

[0037] Example 2

[0038] Please see Figure 1 and Figure 5This processing equipment for accurately controlling glass thickness includes a conveyor belt 1 and a thickness gauge 2. The conveyor belt 1 transports the glass plate to the bottom of the thickness gauge 2. The thickness gauge 2 has a jumping element 21 at its bottom. The jumping element 21 can generate different displacements according to the thickness of the glass plate; the thicker the glass plate, the greater the displacement of the jumping element 21. The displacement of the jumping element 21 is upward. An elastic bladder 22 is located above the jumping element 21, and a liquid level tube 23 is located above the elastic bladder 22. The bladder 22 is filled with liquid. The ratio of the horizontal cross-section of the elastic bladder 22 to that of the liquid level tube 23 is greater than 10. The conveyor belt 1 is composed of a rolling roller 11 and a rolling roller air bladder 111. The rolling roller air bladder 111 covers the outside of the rolling roller 11 and is driven by the rolling roller 11 to rotate and move the glass plate. The rolling roller air bladder 111 is equipped with an inflation device to keep the internal gas volume constant, reduce the deformation generated when the rolling roller air bladder 111 transports the glass, and reduce the error caused by the deformation of the air bladder during the glass thickness measurement process.

[0039] The array direction of the jumping element 21 is perpendicular to the transport direction of the glass plate (the detailed view shows a longitudinal cross-sectional view of the thickness measuring instrument 2). When there is a change in the thickness of the glass plate surface, the jumping element 21 will be displaced. When the jumping element 21 is displaced upward, it squeezes the elastic bladder 22, causing the liquid in the elastic bladder 22 to flow to the liquid level tube 23, increasing the liquid volume in the liquid level tube 23 and raising the liquid level. The change in the liquid level in the liquid level tube 23 is detected, and the change in the liquid level reflects the distance between the upper surface of the glass plate and the jumping element 21. At the same time, the outer side of the rolling roller 11 used to transport the glass plate is covered. With a rolling roller airbag 111, when the glass plate is placed on the rolling roller airbag 111, the liquid level tube 23 has a real-time monitoring function, which can immediately capture any minute changes and convert them into quantifiable data, realizing real-time and continuous monitoring of the glass plate thickness, improving production efficiency and quality control accuracy. The rapid response capability helps to detect and correct deviations in the production process in a timely manner, reducing the defect rate and waste. By changing the liquid level in the liquid level tube 23, the change in glass thickness is amplified. Changing the diameter of the liquid level tube 23 can adjust the sensitivity of the liquid level change.

[0040] See Figures 5-7The jumping element 21 is a column that can slide up and down. The lower end of the jumping element 21 is provided with an arc-shaped end 212, and the upper end is provided with a pressure plate 211. When the glass plate is transported to the bottom of the thickness measuring instrument 2, if there is a change in the thickness of the glass plate, the jumping element 21 will cause the pressure plate 211 to move upward and squeeze the elastic bladder 22. The arc-shaped end 212 makes it easier for the jumping element 21 to move upward when the glass plate contacts the jumping element 21, avoiding interference and collision between the jumping element 21 and the glass plate. The pressure plate 211 is provided with a limiting component 213 below it and on the side of the jumping element 21. The limiting component 213 can adjust its own length and limit the minimum horizontal height of the pressure plate 211 when no glass plate passes under the jumping element 21, so that it can be adjusted and measured for glass plates of different thicknesses. As a contact measurement, the error is smaller and the measurement accuracy is higher.

[0041] See Figure 8 The inner wall of the liquid level tube 23 has a vertical array of wire ends 231. The solution inside the elastic bladder 22 is a conductive solution. When the liquid level in the liquid level tube 23 rises, the wire ends 231 become conductive after contacting the solution. By detecting the conductivity of different wire ends 231, the position of the liquid level can be detected, and the distance between the upper surface of the glass plate and the jumping element can be calculated. As the liquid level in the liquid level tube 23 rises, the conductive solution gradually contacts the vertical array of wire ends 231. Each wire end represents a specific liquid level height. Therefore, by detecting which wire ends are conductive, the current position of the liquid level can be accurately determined. Compared with traditional visual or mechanical liquid level detection, this detection method based on the conductivity principle provides more accurate and repeatable measurement results, significantly improving the accuracy and reliability of liquid level position detection, and enabling the system to more accurately calculate the distance between the upper surface of the glass plate and the jumping element.

[0042] One airbag 111 is wrapped around each rolling roller 11. The width of the airbag 111 is greater than the width of the glass plate being transported. Because the width of the airbag 111 is greater than the width of the glass plate, it can provide more uniform and comprehensive support for the glass plate. This helps to reduce the deformation or damage to the glass plate caused by uneven force during transportation. At the same time, only one airbag 111 is wrapped around each rolling roller 11, making the overall structure simpler.

[0043] Working Principle: Workers transport glass plates via conveyor belt 1 to a thickness detector 2. The thickness detector 2 has a moving element 21 at its bottom. This moving element 21 can generate different displacements depending on the thickness of the glass plate; the thicker the glass plate, the greater the displacement of the moving element 21. The moving element 21 moves upwards. An elastic bladder 22 is located above the moving element 21, and a liquid level pipe 23 is located above the elastic bladder 22. The elastic bladder 22 is filled with liquid. The conveyor belt 1 consists of a rolling roller 11 and a rolling roller air bladder 111. The rolling roller air bladder 111 covers the outside of the rolling roller 11 and is driven by the rolling roller 11 to rotate and move the glass plate. The rolling roller air bladder 111 contains a pressure detection device. The array direction of the moving elements 21 is perpendicular to the transport direction of the glass plate. When there is a change in the thickness of the glass plate surface, the moving elements 21 will displace. When the moving elements 21 displace upwards, the pressure is measured by the liquid level pipe 23. The elastic bladder 22 is squeezed, causing the liquid inside to flow to the liquid level tube 23, increasing the liquid volume in the liquid level tube 23 and raising the liquid level. The change in the liquid level in the liquid level tube 23 is detected, and the change in the liquid level reflects the distance between the upper surface of the glass plate and the jumping element 21. At the same time, the outer side of the rolling roller 11 used to transport the glass plate is covered by a rolling roller air bladder 111. By controlling the amount of gas in the rolling roller air bladder 111, it is kept constant to reduce the change in air bladder deformation, which can effectively avoid the error in glass thickness measurement and accurately measure the thickness of the glass plate. Both the liquid level tube 23 and the air pressure detection device have real-time monitoring functions, which can immediately capture any minute changes and convert them into quantifiable data, realizing real-time and continuous monitoring of the glass plate thickness. This improves production efficiency and the accuracy of quality control. The rapid response capability helps to detect and correct deviations in the production process in a timely manner, reducing the defect rate and waste.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A processing equipment for accurately controlling the thickness of glass, comprising a conveying belt (1) and a thickness detector (2), the conveying belt (1) conveying a glass plate to below the thickness detector (2), characterized in that: the bottom of the thickness detector (2) is provided with a jumping piece (21), which can produce different displacement amounts according to the different thicknesses of the glass plate, the thicker the glass plate, the greater the displacement amount of the jumping piece (21), the displacement of the jumping piece (21) is upward movement, and an elastic bag (22) is arranged above the jumping piece (21), a liquid level pipe (23) is arranged above the elastic bag (22), the elastic bag (22) is filled with liquid, when the jumping piece (21) is displaced upward, the elastic bag (22) can be extruded, so that the liquid in the elastic bag (22) flows to the liquid level pipe (23), the volume of the liquid in the liquid level pipe (23) increases, the liquid level rises, the ratio of the horizontal cross section of the elastic bag (22) to the liquid level pipe (23) is greater than 10, the conveying belt (1) is composed of a rolling roller (11) and a rolling roller air bag (111), the rolling roller air bag (111) is wrapped outside the rolling roller (11), the rolling roller (11) drives the rotation to drive the glass plate to move, and the rolling roller air bag (111) is provided with an inflating device, the inflating device can keep the amount of gas inside unchanged, and reduce the deformation of the rolling roller air bag (111) when transporting the glass, the jumping piece (21) is a column that can slide up and down, the lower end of the jumping piece (21) is provided with a circular arc-shaped end head (212), and the upper end is provided with a pressing plate (211), when the glass plate is transported to below the thickness detector (2), the jumping piece (21) drives the pressing plate (211) to move upward to extrude the elastic bag (22), a limiting assembly (213) is arranged below the pressing plate (211) and on the side of the jumping piece (21), the limiting assembly (213) can adjust its length, and when there is no glass plate below the jumping piece (21), the limiting assembly (213) limits the lowest horizontal height of the pressing plate (211), a coiled metal coil (232) is vertically arranged on the inner wall of the liquid level pipe (23), and a float (233) is arranged in the liquid level pipe (23), the float (233) floats on the liquid surface of the liquid level pipe (23), a sliding end (2331) is arranged on the float (233), the sliding end (2331) moves up and down on the metal coil (232) with the float (233), and changes the number of coils through which the metal coil (232) is conducted. The rolling roller air bag (111) is wrapped around each rolling roller (11), and the width of the rolling roller air bag (111) is greater than the width of the transported glass plate.

2. The apparatus for accurately controlling the thickness of glass according to claim 1, wherein: The rolling roller air bag (111) is in the shape of a circular ring, at least three rolling roller air bags (111) are wrapped around one rolling roller (11), and each rolling roller air bag (111) does not affect each other.

3. The apparatus for accurately controlling the thickness of glass according to claim 1, wherein: ​

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