High-performance membrane material on-line thickness gauge

Abstract

The invention discloses a high-performance film material online thickness gauge, and relates to the technical field of thickness measurement, the high-performance film material online thickness gauge comprises a pedestal, the top surface of the pedestal is provided with a laser thickness measurement assembly, and the laser thickness measurement assembly measures the thickness of a film body by emitting a laser beam to the upper and lower surfaces of the film body through the time difference of reflected light. A laser thickness measuring assembly is arranged on the base, guide assemblies are arranged on the two sides of the laser thickness measuring assembly, a rewinding assembly is arranged on one side wall of the base, a rechecking assembly is arranged on the other side wall of the base, and a film body is guided by the rechecking assembly and the two guide assemblies and finally rewound in the rewinding assembly. According to the invention, the rewinding assembly and the rechecking assembly cooperate for rechecking, the theoretical value of the thickness of the film body can be calculated by utilizing the linear velocity correlation between the real-time radius change of the rewinding roller and the fixed radius of the rechecking roller and combining the number of turns recorded by the main control encoder, and the theoretical value is compared with the measurement data of the laser thickness measurement assembly for calibration, so that the dynamic measurement error is effectively eliminated; and the thickness measurement precision is obviously improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thickness measurement, in particular to a high-performance online thickness gauge for membrane materials. Background Art

[0002] An online thickness gauge is an automated measurement device that continuously monitors material thickness in real time during the production process, providing timely feedback to control production. Measuring the thickness of high-performance membrane materials is crucial for ensuring their performance and effectiveness. Because these materials are typically thin and susceptible to external forces, they place extremely high demands on measurement accuracy, stability, and non-contact performance. In practice, specialized equipment such as online thickness gauges are often used.

[0003] For example, patent CN120293045A discloses a long drift calibration method and device for an online thickness gauge, which measures the signal of a pure radiation source without a film placed thereon to obtain a signal value of the pure radiation intensity; measures the signal of a standard part to obtain the signal value of the radiation after the standard part is weakened and the material and thickness of the standard sample are compared; uses the calibration algorithm to calculate the pure radiation source signal value at a certain moment, utilizes the slow-changing characteristics of the pure radiation source signal value to calibrate the pure radiation signal value near a certain moment, and then inputs the radiation absorption formula to calculate the thickness of the film being measured.

[0004] However, in existing technologies, due to the extremely thin thickness of the film, even minor interference factors during the measurement process may lead to relatively large measurement errors. If only relying on a single measurement method, it is difficult to fully and accurately capture the true thickness of the film due to the limitations of the method's principles, accuracy, and scope of application. For example, in common contact measurements, the pressure of the probe may cause the soft film to deform, resulting in measurement deviations; and some optical measurement methods are easily affected by characteristics such as the surface roughness and transmittance of the film. The limitations of these single measurement methods can easily lead to inaccurate measurement results, which in turn seriously affects the actual effect of film thickness measurement. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-performance online thickness gauge for membrane materials to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a high-performance online thickness gauge for membrane materials, comprising a pedestal, wherein a laser thickness measuring assembly is provided on the top surface of the pedestal, wherein the laser thickness measuring assembly emits a laser beam to the upper and lower surfaces of the membrane body, and measures the thickness of the membrane body by utilizing the time difference of the reflected light; guide assemblies are provided on both sides of the laser thickness measuring assembly, a rewinding assembly is provided on one side wall of the pedestal, and a re-inspection assembly is provided on the other side wall of the pedestal; the membrane body is guided by the re-inspection assembly and the two guide assemblies and finally rewound in the rewinding assembly; the two guide assemblies are used to guide the membrane body to be parallel to the upper surface of the pedestal; The rewinding assembly includes a rewinding roller, both ends of the rewinding roller are rotatably connected to a positioning frame 1, the positioning frame 1 is fixedly connected to the outer wall of the base, one end of the rewinding roller is provided with a servo motor, the other end of the rewinding roller is provided with a main control encoder, the servo motor is used to drive the rewinding roller to rotate at a fixed angular velocity, the main control encoder is used to record the number of revolutions of the rewinding roller, the re-inspection assembly includes a re-inspection roller, both ends of the re-inspection roller are rotatably connected to a positioning frame 3, the positioning frame 3 is fixedly connected to the outer wall of the base, one end of the re-inspection roller is provided with a speed sensor, and the speed sensor is used to test the rotational angular velocity of the re-inspection roller.

[0007] Preferably, the formula for retesting the film thickness through the rewinding assembly and the retesting assembly is: ; Where, is the thickness of the film to be re-inspected, is the angular velocity of the rewinding roller driven by the servo motor, and The main control encoder records the number of revolutions of the rewinding roller at the two detection points. and The speed sensor measures the rotational linear speed of the re-inspection roller at two inspection points respectively, and the film thickness obtained by re-inspection is compared and calibrated with the thickness measured by the laser thickness measuring component to improve the accuracy of the film thickness test.

[0008] Preferably, the guide assembly includes a guide roller, both ends of the guide roller are rotatably connected to a second positioning frame, and the bottom end of the second positioning frame is movably connected to the top surface of the pedestal.

[0009] Preferably, a constant pressure test assembly is provided on both sides of the laser thickness measuring assembly, a crossbeam is provided inside the constant pressure test assembly, and telescopic sleeves are provided on both sides inside the crossbeam, an electric cylinder is provided inside the telescopic sleeve, and the outer wall of the telescopic sleeve is slidably connected to a bearing slide.

[0010] Preferably, the supporting sliding platform is slidably connected to the surface of the telescopic sleeve through an electric cylinder, an electric control seat is provided on one side of the constant pressure test assembly, a sliding sleeve is provided at the end of the telescopic sleeve, and the sliding sleeve is slidably connected to the crossbeam of the platform.

[0011] Preferably, a test platform is provided at the bottom end of the laser thickness measuring component, a laser detection head is provided at the top end of the laser thickness measuring component, the laser detection head is used to receive the laser downward, and a Bluetooth module is provided at the top end of the laser thickness measuring component, the Bluetooth module is used to transmit the test data online.

[0012] Preferably, a display screen and a touch screen are provided on the front of the pedestal, the display screen is used to display the data of the angular velocity and number of rotations of the rewinding roller and the angular velocity of the re-inspection roller, and the touch screen is used to touch-control the angular velocity of the rewinding roller and the periodic measurement time frequency of the constant pressure test component.

[0013] Preferably, a power button and an adjustment key are provided on the surface of the pedestal, and support feet are fixedly connected to the four corners of the bottom end of the pedestal.

[0014] Preferably, threaded holes are installed on the surface of the second positioning frame, and the second positioning frame is installed on the base through screws, and nuts are movably connected to the surfaces of the screws, and the height of the guide roller raised by the second positioning frame is adjusted by the nuts.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the rewinding assembly and the re-inspection assembly are used to coordinate re-inspection, and the real-time radius change of the rewinding roller is associated with the linear speed of the fixed radius of the re-inspection roller. Combined with the number of turns recorded by the main control encoder, the theoretical value of the film thickness can be calculated and compared with the measurement data of the laser thickness measuring assembly for calibration, effectively eliminating dynamic measurement errors and significantly improving the thickness measurement accuracy.

[0016] 2. In the present invention, in addition to direct laser thickness measurement and rewinding-reinspection coordinated verification, the constant pressure test components on both sides of the laser thickness measurement component use electric cylinders to drive the sliding table to press the film body when the servo motor stops, and use strain sensors and propulsion stroke data to verify the thickness again. The triple mechanism cross-check greatly reduces the deviation risk of a single measurement method.

[0017] 3. In the present invention, the guide roller of the guide assembly can be adjusted in height through the positioning frame 2. Combined with the steering design of the membrane between the re-inspection roller and the guide roller, the membrane can always be kept parallel to the upper surface of the base, avoiding measurement distortion of the laser thickness measuring assembly caused by the tilt of the membrane, ensuring the stability of the membrane posture during dynamic movement, and providing basic conditions for accurate thickness measurement.

[0018] 4. In the present invention, the equipment is equipped with a display screen to display parameters such as the angular velocity, number of turns and angular velocity of the rewinding roller in real time. The servo motor angular velocity, constant pressure test frequency, etc. can be directly adjusted through the touch screen or adjustment keys. The power button supports emergency stop control. The height of the guide roller can be flexibly adjusted through the nut of the positioning frame 2. The operation is intuitive and adaptable.

[0019] 5. In the present invention, the equipment uses the rewinding roller of the rewinding component as the power core to drive the film body to continuously pass through the re-inspection roller and the guide roller. The laser thickness measuring component can measure the thickness of the film body in real time during dynamic movement. At the same time, the Bluetooth module realizes online data transmission, and the constant pressure test component supports regular stop detection. The overall process can complete multiple measurements without interrupting the rewinding, taking into account both detection efficiency and continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-performance online thickness gauge for membrane materials according to the present invention; Figure 2 This is a front plan view of a high-performance online thickness gauge for membrane materials according to the present invention; Figure 3 This is a structural schematic diagram of a constant pressure test assembly in a high-performance membrane material online thickness gauge of the present invention; Figure 4 This is a schematic structural diagram of a pedestal in a high-performance online thickness gauge for membrane materials according to the present invention; Figure 5 This is a schematic structural diagram of a laser thickness measuring component in a high-performance online thickness gauge for membrane materials according to the present invention; Figure 6 This is a schematic structural diagram of a rewinding component and a re-inspection component in a high-performance online thickness gauge for membrane materials according to the present invention; Figure 7 This is a schematic diagram of the principle of membrane operation in a high-performance online thickness gauge for membrane materials according to the present invention; Figure 8 This is a simplified diagram illustrating the change in the rotation radius of the rewinding roller in an online thickness gauge for high-performance membrane materials according to the present invention; Figure 9 This is a simplified diagram illustrating the change in the rotational linear speed of the rewinding roller in an online thickness gauge for high-performance membrane materials according to the present invention.

[0021] In the figure: 1. Base; 11. Display screen; 12. Touch screen; 13. Power button; 14. Adjustment key; 15. Support foot; 2. Laser thickness measurement assembly; 21. Laser detection head; 22. Test carrier; 23. Bluetooth module; 3. Constant pressure test assembly; 31. Telescopic sleeve; 32. Sliding table; 33. Electric control seat; 34. Sliding sleeve; 4. Rewinding assembly; 41. Servo motor; 42. Main control encoder; 43. Positioning frame 1; 44. Rewinding roller; 5. Guide assembly; 51. Guide roller; 52. Positioning frame 2; 6. Re-inspection assembly; 61. Positioning frame 3; 62. Speed ​​sensor; 63. Re-inspection roller. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] Example 1: Reference Figures 1-9As shown: A high-performance online thickness gauge for membrane materials, comprising a pedestal 1, a laser thickness measuring assembly 2 is provided on the top surface of the pedestal 1, the laser thickness measuring assembly 2 emits a laser beam to the upper and lower surfaces of the membrane, and measures the thickness of the membrane by using the time difference of the reflected light, a guide assembly 5 is provided on both sides of the laser thickness measuring assembly 2, a rewinding assembly 4 is provided on one side wall of the pedestal 1, and a re-inspection assembly 6 is provided on the other side wall of the pedestal 1, the membrane is guided by the re-inspection assembly 6 and the two guide assemblies 5, and finally rewound in the rewinding assembly 4, and the two guide assemblies 5 are used to guide the membrane to be parallel to the upper surface of the pedestal 1; The rewinding assembly 4 includes a rewinding roller 44, both ends of which are rotatably connected to a positioning frame 43, and the positioning frame 43 is fixedly connected to the outer wall of the base 1. A servo motor 41 is provided at one end of the rewinding roller 44, and a main control encoder 42 is provided at the other end of the rewinding roller 44. The servo motor 41 is used to drive the rewinding roller 44 to rotate at a fixed angular velocity, and the main control encoder 42 is used to record the number of revolutions of the rewinding roller 44. The re-inspection assembly 6 includes a re-inspection roller 63, both ends of the re-inspection roller 63 are rotatably connected to a positioning frame 3 61, and the positioning frame 3 61 is fixedly connected to the outer wall of the base 1. A speed sensor 62 is provided at one end of the re-inspection roller 63, and the speed sensor 62 is used to test the rotational angular velocity of the re-inspection roller 63.

[0024] In this embodiment, the online thickness gauge uses the laser thickness measurement principle for testing. In order to ensure the accuracy of the test, it is necessary to make the film as parallel as possible when passing under the laser thickness measuring component 2, and the film is in a dynamic moving state during the test, that is, the film is continuously rewound by the rewinding roller 44, and the film passes through the re-inspection roller 63 and the two guide rollers 51 in turn and moves toward the rewinding roller 44. The film data directly measured by the laser thickness measuring component 2 may have errors and accuracy problems. The rewinding component 4 and the re-inspection component 6 on both sides are used to re-inspect the film thickness. The principle is that the film is attached to one-fourth of the outer circumference of the re-inspection roller 63, turns ninety degrees, passes through the two guide rollers 51 in turn, turns ninety degrees downward through the second guide roller 51, and finally is rewound on the outer surface of the rewinding roller 44. The film is installed on the rewinding roller 44 in a spiral shape.

[0025] As the number of winding turns increases, the radius of the outer periphery becomes larger, but the re-inspection roller 63 does not pass through the winding of the film body, and its rotation radius is always the main body radius of the re-inspection roller 63. When the servo motor 41 drives the rewinding roller 44 to rotate at a fixed angular velocity, the linear speed of the film body wound on the outside of the rewinding roller 44 becomes larger and larger. The real-time rotation radius is the sum of the main roller radius of the rewinding roller 44 and the thickness of the multi-layer film stack. The linear speed is the product of the real-time rotation radius and the angular velocity. Since the film body is a unified whole, the speed of the film body movement is the same at a certain moment. Therefore, during the winding process, its real-time linear speed of the rewinding roller 44 is equal to the real-time linear speed of the guide roller 51 or the re-inspection roller 63. At this time, the real-time linear speed of the re-inspection roller 63 can be calculated by the speed sensor 62.

[0026] Since the speed sensor 62 can measure the angular velocity of the rotation of the re-inspection roller 63, and the rotation radius of the re-inspection roller 63 remains unchanged, after the radius of the re-inspection roller 63 is known, the linear velocity of the film at the re-inspection roller 63 at this time can be converted. Similarly, the linear velocity on the rewinding roller 44 can be obtained, and the rotation radius of the rewinding roller 44 can be reversely calculated. The increase in speed is the increase in the rotation radius of the rewinding roller 44, which is also the thickness value of the film after stacking. The main control encoder 42 records the number of rotations of the rewinding roller 44, which is the number of layers of the film wound outside the rewinding roller 44. This is used to finally verify and calculate the thickness of the film, and compare the verified film thickness with the measurement data of the laser thickness measuring component 2 to improve the accuracy of film measurement.

[0027] Example 2: According to Figure 8 and Figure 9 As shown, the formula for retesting the film thickness through the rewinding component 4 and the retesting component 6 is: ; Where, is the thickness of the film to be re-inspected, is the angular velocity of the rewinding roller 44 driven by the servo motor 41, and The main control encoder 42 records the number of revolutions of the rewinding roller 44 at the two detection points. and The speed sensor 62 measures the rotational linear speed of the re-inspection roller 63 at two detection points respectively, and the film thickness obtained by re-inspection is compared and calibrated with the thickness measured by the laser thickness measuring component 2 to improve the accuracy of the film thickness test.

[0028] In this embodiment, the attached Figure 8 It can be seen that after a period of laser thickness measurement, the number of film layers stored outside the rewinding roller 44 increases, and the rotation radius of the rewinding roller 44 in this process is becomes ,in, is the rotation radius of the original rewinding roller 44, is the number of layers originally wound on the rewinding roller 44, is the rotation radius of the rewinding roller 44, The number of layers to be wound on the rewinding roller 44, is the roller radius of the rewinding roller 44 itself, Figure 9 It can be seen that after a period of time, the servo motor 41 drives the rewinding roller 44 to rotate at an angular velocity of Under the same premise, the rotation speed of the rewinding roller 44 is becomes , the change in linear velocity is obtained from the change in rotation radius. After combining the two sets of relations, we can naturally get The relationship: , through the measurement of the speed sensor 62 and the main control encoder 42, we can get value.

[0029] Example 3: According to Figure 1 、 Figure 2 and Figure 3 As shown, the guide assembly 5 includes a guide roller 51, both ends of which are rotatably connected to a positioning frame 52, and the bottom end of the positioning frame 52 is movably connected to the top surface of the pedestal 1. A constant pressure test assembly 3 is provided on both sides of the laser thickness measurement assembly 2. A crossbeam is provided inside the constant pressure test assembly 3, and a telescopic sleeve 31 is provided on both sides of the crossbeam. An electric cylinder is provided inside the telescopic sleeve 31, and a bearing slide 32 is slidably connected to the outer wall of the telescopic sleeve 31. The bearing slide 32 is slidably connected to the surface of the telescopic sleeve 31 via the electric cylinder. An electric control seat 33 is provided on one side of the constant pressure test assembly 3, and a sliding sleeve 34 is provided at the end of the telescopic sleeve 31. The sliding sleeve 34 is slidably connected to the crossbeam of the pedestal 1.

[0030] In this embodiment, in addition to re-inspecting the thickness of the film body through the rewinding component 4 and the re-inspection component 6, a set pressure test component 3 can be added on both sides of the laser thickness measuring component 2 to directly press and calculate the data of the film body. In order to achieve the above purpose, the servo motor 41 and the telescopic sleeve 31 need to work together, and the servo motor 41 is set to a periodic stop operation mode. During the stop of the servo motor 41, the rewinding roller 44 no longer rewinds the film body, and the electric cylinder inside the telescopic sleeve 31 drives the two sets of sliding platforms 32 to approach each other until the two sliding platforms 32 respectively contact the upper and lower surfaces of the film body. A strain sensor is set on the surface of the sliding platform 32. When it contacts the film body, it is subjected to strain pressure. At this time, the electric cylinder stops pushing, and a sensor is set inside the electric control seat 33 to record the working log of the electric cylinder, and the detailed single propulsion stroke is obtained. The propulsion stroke of the electric cylinder is inversely proportional to the thickness of the film body. The film thickness obtained by this method once again verifies the accuracy of the laser thickness measurement of the laser thickness measuring component 2.

[0031] Example 4: According to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the bottom of the laser thickness measuring assembly 2 is provided with a test platform 22, and the top of the laser thickness measuring assembly 2 is provided with a laser detection head 21, which is used to receive the laser downward. The top of the laser thickness measuring assembly 2 is provided with a Bluetooth module 23, which is used to transmit the test data online. The front of the pedestal 1 is provided with a display screen 11 and a touch screen 12. The display screen 11 is used to display the rotational angular velocity and number of rotations of the rewinding roller 44 and the rotational angular velocity of the re-inspection roller 63. The touch screen 12 is used to touch-control the rotational angular velocity of the rewinding roller 44 and the periodic measurement time frequency of the constant pressure test assembly 3. The surface of the pedestal 1 is provided with a power button 13 and an adjustment key 14. Support feet 15 are fixedly connected to the four corners of the bottom of the pedestal 1. The surface of the positioning frame 2 52 is installed with threaded holes. The positioning frame 2 52 is installed on the pedestal 1 by screws, and the surface of the screws is movably connected to a nut, which is used to adjust the height of the guide roller 51 raised by the positioning frame 2 52.

[0032] In this embodiment, in order to intuitively monitor the number of rotations of the rewinding roller 44 and the rotation speed of the re-inspection roller 63, a display screen 11 is set on the surface of the pedestal 1 to display various operating parameters online in real time. At the same time, a touch screen 12 is set outside the pedestal 1. The touch screen 12 displays the speed at which the servo motor 41 drives the rewinding roller 44 to rotate. This speed is the angular velocity of the rewinding roller 44. The corresponding parameters can be directly adjusted and changed on the touch screen 12, or the parameters can be changed through the adjustment key 14. The power button 13 is used to control the power supply of the entire device, and it can also be stopped in an emergency when a fault occurs. The guide roller 51 is installed above the pedestal 1 through the positioning frame 52. The height position can be flexibly adjusted through the nut so that the membrane body passes through the middle position of the constant pressure test assembly 3.

[0033] The usage method and working principle of this device are as follows: the film body passes through the re-inspection roller 63 of the re-inspection component 6 and the guide rollers 51 of the two guide components 5 in turn, and is finally wound up in a spiral shape on the rewinding roller 44 of the rewinding component 4; the laser detection head 21 of the laser thickness measuring component 2 directly measures the thickness of the film body passing thereunder, and at the same time, the rewinding roller 44 is driven by the servo motor 41 to rotate at a fixed angular velocity, and its number of rotations is recorded by the main control encoder 42, while the rotational angular velocity of the re-inspection roller 63 is detected by the speed sensor 62. The relationship between the real-time radius change of the rewinding roller 44 due to the increase in the number of winding turns and the linear velocity of the fixed radius of the re-inspection roller 63 can be used to verify the thickness of the film body; in addition, the constant pressure test components 3 on both sides of the laser thickness measuring component 2 drive the sliding table 32 through the telescopic sleeve 31 to press the film body during the period when the servo motor 41 stops, and the thickness is further verified by combining the strain sensor and the electric cylinder stroke data. All data are transmitted via the Bluetooth module 23 and displayed on the display screen 11. The parameters can be adjusted through the touch screen 12 or the adjustment key 14 to ensure the accuracy of the thickness measurement.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-performance online thickness gauge for film materials, comprising a base (1), wherein a laser thickness measuring assembly (2) is provided on the top surface of the base (1), wherein the laser thickness measuring assembly (2) emits a laser beam to the upper and lower surfaces of a film body and measures the thickness of the film body by utilizing the time difference of the reflected light, and wherein: Guide assemblies (5) are provided on both sides of the laser thickness measuring assembly (2), a rewinding assembly (4) is provided on one side wall of the pedestal (1), and a re-inspection assembly (6) is provided on the other side wall of the pedestal (1). The film body is guided by the re-inspection assembly (6) and the two guide assemblies (5) and is finally rewound in the rewinding assembly (4). The two guide assemblies (5) are used to guide the film body to be parallel to the upper surface of the pedestal (1); The rewinding assembly (4) includes a rewinding roller (44), both ends of the rewinding roller (44) are rotatably connected to a positioning frame (43), the positioning frame (43) is fixedly connected to the outer wall of the pedestal (1), one end of the rewinding roller (44) is provided with a servo motor (41), the other end of the rewinding roller (44) is provided with a main control encoder (42), the servo motor (41) is used to drive the rewinding roller (44) to rotate at a fixed angular velocity, the main control encoder (42) is used to record the number of revolutions of the rewinding roller (44), the rechecking assembly (6) includes a rechecking roller (63), both ends of the rechecking roller (63) are rotatably connected to a positioning frame (61), the positioning frame (61) is fixedly connected to the outer wall of the pedestal (1), one end of the rechecking roller (63) is provided with a speed sensor (62), the speed sensor (62) is used to test the rotational angular velocity of the rechecking roller (63).

2. A high-performance membrane material online thickness gauge according to claim 1, characterized in that: The formula for re-inspecting the film thickness through the rewinding component (4) and the re-inspection component (6) is: ; Where, is the thickness of the film to be re-inspected, is the angular velocity at which the servo motor (41) drives the rewinding roller (44) to rotate, and The main control encoder (42) records the number of revolutions of the rewinding roller (44) at the two detection points. and The speed sensor (62) measures the rotational linear speed of the re-inspection roller (63) at two inspection points, and the thickness of the film body obtained by re-inspection is compared and calibrated with the thickness measured by the laser thickness measuring component (2), thereby improving the accuracy of the film body thickness test.

3. The high-performance online thickness gauge for membrane materials according to claim 1, characterized in that: The guide assembly (5) comprises a guide roller (51), both ends of the guide roller (51) are rotatably connected to a second positioning frame (52), and the bottom end of the second positioning frame (52) is movably connected to the top surface of the pedestal (1).

4. The high-performance online thickness gauge for membrane materials according to claim 1, characterized in that: A constant pressure test assembly (3) is provided on both sides of the laser thickness measurement assembly (2), a crossbeam is provided inside the constant pressure test assembly (3), and telescopic sleeves (31) are provided on both sides inside the crossbeam, an electric cylinder is provided inside the telescopic sleeve (31), and an outer side wall of the telescopic sleeve (31) is slidably connected to a bearing slide (32).

5. The high-performance online thickness gauge for membrane materials according to claim 4, characterized in that: The supporting sliding platform (32) is slidably connected to the surface of the telescopic sleeve (31) via an electric cylinder. An electric control seat (33) is provided on one side of the constant pressure test assembly (3). A sliding sleeve (34) is provided at the end of the telescopic sleeve (31). The sliding sleeve (34) is slidably connected to the crossbeam of the platform (1).

6. The high-performance online thickness gauge for membrane materials according to claim 1, characterized in that: A test platform (22) is provided at the bottom end of the laser thickness measuring component (2), a laser detection head (21) is provided at the top end of the laser thickness measuring component (2), the laser detection head (21) is used to receive laser light downward, and a Bluetooth module (23) is provided at the top end of the laser thickness measuring component (2), the Bluetooth module (23) is used to transmit test data online.

7. The high-performance online thickness gauge for membrane materials according to claim 1, characterized in that: The front of the pedestal (1) is provided with a display screen (11) and a touch screen (12), wherein the display screen (11) is used to display data on the rotational angular velocity and number of rotations of the rewinding roller (44) and the rotational angular velocity of the re-inspection roller (63), and the touch screen (12) is used to adjust the rotational angular velocity of the rewinding roller (44) and the periodic measurement time frequency of the constant pressure test component (3) by touch.

8. The high-performance online thickness gauge for membrane materials according to claim 1, characterized in that: A power button (13) and an adjustment key (14) are provided on the surface of the pedestal (1), and support feet (15) are fixedly connected to the four corner positions of the bottom end of the pedestal (1).

9. The high-performance online thickness gauge for membrane materials according to claim 3, characterized in that: The surface of the second positioning frame (52) is provided with a threaded hole. The second positioning frame (52) is installed on the pedestal (1) by means of screws, and the surface of the screws is movably connected with a nut, and the height of the guide roller (51) raised by the second positioning frame (52) is adjusted by the nut.

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