Thickness measuring device for graphene film

Abstract

The utility model relates to the technical field of graphene film preparation, the interior of an extension plate is uniformly provided with pores, the top of the extension plate is connected with a gas distribution box, the top of the gas distribution box is connected with a conical gas collection box, the top of the gas collection box is provided with a fan, and the top of the fan is provided with an air outlet. When the laser displacement sensor measures the thickness of a graphene film, pressure airflow is generated through the fan, the pressure airflow is conveyed to the air distribution box through the air collection box, and finally the airflow is discharged through the evenly-distributed fine holes through the air distribution box, so that the thickness of the graphene film is measured in the actual measurement process of the laser displacement sensor. The graphene film on the top of the supporting table is flattened by using pressure airflow discharged from the fine holes, so that the graphene film can be more flatly and tightly attached to the top surface of the supporting table, the graphene film is prevented from protruding and wrinkling during measurement, and the result precision of actual thickness measurement of the graphene film is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of graphene film preparation, in particular to a graphene film thickness measuring device. Background Art

[0002] Graphene film is an ultra-thin film material composed of a single carbon atom layer and a two-dimensional atomic carbon network. Its advantages are: high strength, lightness, good conductivity, transparency, flexibility, and chemical stability. Due to its unique properties, graphene film has broad application prospects in many fields and is considered to be a revolutionary material in the future. With the deepening of research and technological advancement, graphene film will play a more important role in the future and promote the development of various fields. During the production process of graphene film, the thickness of the graphene film needs to be measured. A Chinese patent discloses: a graphene film thickness measuring device, with the authorized public number: CN216206062U. The patent uses a laser displacement sensor to measure the displacement value of the same position before and during production, and obtains the thickness of the graphene film after conversion and averaging.

[0003] However, when current measuring devices actually measure the thickness of graphene films, since the measuring sensor measures through distance sensing, there is no means to flatten the graphene film. As a result, when the graphene film is laid unevenly or has ridges, the measurement results will be inaccurate. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the utility model provides a device for measuring the thickness of a graphene film, which solves the problem that when the current measuring device actually measures the thickness of the graphene film, the measuring sensor measures by distance sensing and lacks a means to flatten the graphene film, resulting in inaccurate measurement results when the graphene film is unevenly laid or has bulges.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a graphene film thickness measuring device, comprising a support platform, four sets of vertical frames are installed at the top corners of the support platform, and the top ends of the four sets of vertical frames are fixedly connected to a top frame, a crossbeam is fixedly installed in the middle of the inner side of the top frame, and the inner side of the crossbeam is adjustably connected to a telescopic arm through a multi-directional adjustment mechanism, the bottom end of the telescopic arm is telescopically connected to a connecting rod, the bottom end of the connecting rod is fixedly connected to a mounting plate, and the bottom end of the mounting plate is fixedly mounted with a laser displacement sensor;

[0008] Baffles are symmetrically installed on both sides of the top of the support platform, and extension plates are fixedly installed on both side ends of the installation plate. Fine holes are evenly opened inside the extension plates. The top of the extension plates is connected to an air distribution box, and the top of the air distribution box is connected to a conical air collecting box. A fan is installed on the top of the air collecting box.

[0009] As a preferred technical solution of a graphene film thickness measuring device of the present invention, limiting bolts are provided at corresponding positions of the edge ends of the telescopic arms and the edge of the connecting rod, and fixing screw holes are equidistantly provided on the edge of the connecting rod.

[0010] As an optimal technical solution for a graphene film thickness measuring device of the utility model, a grid mesh is provided inside the air distribution box, and the air distribution box and the pores are interconnected, and the air outlet end of the fan is connected to the air inlet end of the air distribution box through an air collecting box.

[0011] As a preferred technical solution of a graphene film thickness measuring device of the utility model, the multi-directional adjustment mechanism includes a movable slider, the inner side of the crossbeam is embedded with a movable slider that can be slidably connected, the interior of the movable slider is connected to a transverse threaded rod through a thread, and one end of the transverse threaded rod is connected to the first motor;

[0012] The bottom of the movable slider is fixedly connected to a movable cross frame, and guide grooves are provided inside both sides of the top frame. The top ends of both sides of the movable cross frame are connected by limiting guides between the connecting slide and the guide grooves. A limiting groove is provided inside the movable cross frame, and the inner side of the limiting groove is rotatably connected to a longitudinal threaded rod, and the outer side of the longitudinal threaded rod is threadedly connected to a driving connecting block, and the telescopic arm is fixedly installed at the bottom of the driving connecting block, and the end of the longitudinal threaded rod is connected to the second motor.

[0013] As an optimal technical solution for a graphene film thickness measuring device of the present invention, the transverse threaded rod is rotatably connected to the top of the beam through the rotating seats on both sides of the top of the beam, and the movable slider is embedded in a movable groove provided inside the beam for fitting and sliding connection.

[0014] As a preferred technical solution of a graphene film thickness measuring device of the present invention, the beam and the movable horizontal frame are vertically staggered, and the first motor and the second motor are fixedly installed on the side ends of the beam and the movable horizontal frame respectively.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a graphene film thickness measurement device with the following beneficial effects:

[0017] 1. The telescopic adjustment between the telescopic arm and the connecting rod makes it easy to adjust the position of the laser displacement sensor, which facilitates better measurement. By utilizing the extension plates, fine holes, air distribution boxes, air collecting boxes and fans on both sides of the mounting plate, when the laser displacement sensor measures the thickness of the graphene film, a pressurized airflow is generated by the fan, and the air collecting box is used to transport the pressurized airflow to the air distribution box, and finally the airflow is discharged through the evenly distributed fine holes through the air distribution box. In this way, when the laser displacement sensor is actually measuring, the pressurized airflow discharged from the fine holes is used to flatten the graphene film on the top of the support platform, so that the graphene film can fit more flatly and tightly on the top surface of the support platform, avoiding the appearance of bulges and wrinkles on the graphene film during measurement, and ensuring the accuracy of the actual thickness measurement results of the graphene film.

[0018] 2. The horizontal position adjustment of the movable cross frame along the cross frame is facilitated by the cross beam, the movable slider, the transverse threaded rod and the first motor. The vertical position adjustment of the driving connecting block along the movable cross frame is facilitated by the limiting grooves on the inner side and the edge of the movable cross frame, the longitudinal threaded rod and the second motor. This facilitates the adjustment of the position of the telescopic arm and the connecting rod at the bottom of the driving connecting block in different directions, meets the actual measurement requirements of the laser displacement sensor, facilitates the accurate measurement of different measurement points of the graphene film, avoids the occurrence of measurement blind spots, and improves the measurement accuracy.

[0019] The guide grooves opened on the inner side of the top frame and the connecting slides connected to the tops of both sides of the movable cross frame can limit the moving position of the movable cross frame by utilizing the limiting guide cooperation between the connecting slides and the guide grooves to ensure the stability of its actual movement and avoid position deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 It is a structural schematic diagram of the movable horizontal frame of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the movable slider of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the extension plate of the utility model.

[0024] In the figure: 1. Support platform; 2. Vertical frame; 3. Top frame; 4. Telescopic arm; 5. Connecting rod; 6. Laser displacement sensor; 7. Baffle; 8. Mounting plate; 9. Extension plate; 10. Fine hole; 11. Air distribution box; 12. Air collecting box; 13. Fan; 14. Crossbeam; 15. Moving slider; 16. Transverse threaded rod; 17. Moving cross frame; 18. Guide groove; 19. Connecting slide; 20. Limiting groove; 21. Longitudinal threaded rod; 22. Drive connecting block; 23. First motor; 24. Second motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0026] See also Figure 1-4 The utility model provides the following technical solutions: a device for measuring the thickness of a graphene film, comprising a support platform 1, four groups of vertical frames 2 are installed at the top corners of the support platform 1, and the tops of the four groups of vertical frames 2 are fixedly connected to a top frame 3, a cross beam 14 is fixedly installed on the inner middle part of the top frame 3, and the inner side of the cross beam 14 is adjustably connected to a telescopic arm 4 through a multi-directional adjustment mechanism, the bottom end of the telescopic arm 4 is telescopically connected to a connecting rod 5, the bottom end of the connecting rod 5 is fixedly connected to a mounting plate 8, and a laser displacement sensor 6 is fixedly installed on the bottom end of the mounting plate 8, limiting bolts are provided at corresponding positions of the edge ends of the telescopic arm 4 and the edge of the connecting rod 5, and fixing screw holes are equidistantly opened on the edge of the connecting rod 5, and the position of the laser displacement sensor 6 is conveniently adjusted through the telescopic adjustment between the telescopic arm 4 and the connecting rod 5, so as to facilitate better measurement;

[0027] Baffles 7 are symmetrically installed on both sides of the top of the support platform 1, and extension plates 9 are fixedly installed on both side ends of the mounting plate 8. Fine holes 10 are evenly opened inside the extension plates 9. The top of the extension plate 9 is connected to an air distribution box 11, and the top of the air distribution box 11 is connected to a conical air collecting box 12. A fan 13 is installed on the top of the air collecting box 12. A grille is provided inside the air distribution box 11, and the air distribution box 11 and the fine holes 10 are interconnected. The air outlet end of the fan 13 is connected to the air inlet end of the air distribution box 11 through the air collecting box 12. A pressurized airflow is generated by the fan 13, and the pressurized airflow is transported to the air distribution box 11 by using the air collecting box 12. Finally, the airflow is discharged through the evenly distributed fine holes 10 through the air distribution box 11.

[0028] The multi-directional adjustment mechanism includes a movable slider 15. The movable slider 15 is embedded in the inner side of the crossbeam 14 and can be slidably connected. The interior of the movable slider 15 is connected to a transverse threaded rod 16 by a thread. The transverse threaded rod 16 is rotatably connected to the top of the crossbeam 14 through the rotating seats on both sides of the top of the crossbeam 14. The movable slider 15 is embedded in a movable groove provided in the crossbeam 14 for fitting and sliding connection, which facilitates the rotation connection of the transverse threaded rod 16 and enables the movable slider 15 to stably limit the sliding. One end of the transverse threaded rod 16 is connected to the first motor 23.

[0029] The bottom of the movable slider 15 is fixedly connected to the movable cross frame 17, and guide grooves 18 are provided inside both sides of the top frame 3. The top ends of both sides of the movable cross frame 17 are connected by limiting guides between the connecting slide 19 and the guide grooves 18. A limiting groove 20 is provided inside the movable cross frame 17, and the inner side of the limiting groove 20 is rotatably connected to the longitudinal threaded rod 21. The outer side of the longitudinal threaded rod 21 is connected to the driving connecting block 22 by a thread. The telescopic arm 4 is fixedly installed at the bottom of the driving connecting block 22, and the end of the longitudinal threaded rod 21 is connected to the second motor 24. The crossbeam 14 and the movable cross frame 17 are vertically staggered. The first motor 23 and the second motor 24 are respectively fixedly installed on the side ends of the crossbeam 14 and the movable cross frame 17, so that the position of the telescopic arm 4 and the connecting rod 5 at the bottom of the driving connecting block 22 can be adjusted in different directions, so that the first motor 23 and the second motor 24 are fixedly installed.

[0030] The working principle and use process of the utility model are as follows: first, the position of the laser displacement sensor 6 is conveniently adjusted through the telescopic adjustment between the telescopic arm 4 and the connecting rod 5, so as to facilitate better measurement. During measurement, the measuring position of the laser displacement sensor 6 needs to be adjusted according to needs;

[0031] During actual adjustment, the horizontal position of the movable cross frame 17 is firstly adjusted along the cross beam 14 by means of the cross beam 14, the movable slider 15, the transverse threaded rod 16 and the first motor 23. Then, the position of the driving connecting block 22 is adjusted along the movable cross frame 17 in the vertical direction by means of the limiting groove 20 on the inner side and the edge of the movable cross frame 17, the longitudinal threaded rod 21 and the second motor 24. In this way, the position of the telescopic arm 4 and the connecting rod 5 at the bottom of the driving connecting block 22 is adjusted in different directions, thereby meeting the actual measurement requirements of the laser displacement sensor 6, facilitating accurate measurement of different measurement points of the graphene film, avoiding measurement blind spots, and improving the accuracy of its actual measurement.

[0032] During the actual adjustment process, the guide grooves 18 provided on the inner side of the top frame 3 and the connecting slides 19 connected to the tops of both sides of the movable cross frame 17 can limit the movable cross frame 17 when it is moved and adjusted by using the limiting guide cooperation between the connecting slides 19 and the guide grooves 18 to limit its movement position, thereby ensuring the stability of its actual movement and avoiding position deviation.

[0033] When the laser displacement sensor 6 measures the thickness of the graphene film, the extension plate 9, fine holes 10, air distribution box 11, air collecting box 12 and fan 13 on both sides of the mounting plate 8 are used to generate a pressurized airflow through the fan 13, and the air collecting box 12 is used to transport the pressurized airflow to the air distribution box 11, and finally the airflow is discharged through the evenly distributed fine holes 10 through the air distribution box 11. In this way, when the laser displacement sensor 6 is actually measuring, the pressurized airflow discharged from the fine holes 10 is used to flatten the graphene film on the top of the support platform 1, so that the graphene film can fit more flatly and tightly on the top surface of the support platform 1, avoiding the appearance of bulges and wrinkles in the graphene film during measurement, and ensuring the accuracy of the actual thickness measurement results of the graphene film.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A graphene film thickness measuring device, comprising a support platform (1), characterized in that: Four groups of vertical frames (2) are installed at the top corners of the support platform (1), and the tops of the four groups of vertical frames (2) are fixedly connected to the top frame (3), a crossbeam (14) is fixedly installed in the middle of the inner side of the top frame (3), and the inner side of the crossbeam (14) is adjustably connected to a telescopic arm (4) through a multi-directional adjustment mechanism, the bottom end of the telescopic arm (4) is telescopically connected to a connecting rod (5), the bottom end of the connecting rod (5) is fixedly connected to a mounting plate (8), and the bottom end of the mounting plate (8) is fixedly installed with a laser displacement sensor (6); Baffles (7) are symmetrically installed on both sides of the top of the support platform (1), and extension plates (9) are fixedly installed on both ends of the installation plate (8). Fine holes (10) are evenly opened inside the extension plate (9). The top of the extension plate (9) is connected to an air distribution box (11), and the top of the air distribution box (11) is connected to a conical air collecting box (12), and a fan (13) is installed on the top of the air collecting box (12).

2. The graphene film thickness measuring device according to claim 1, wherein: Limiting bolts are provided at positions corresponding to the edge ends of the telescopic arms (4) and the edge of the connecting rod (5), and fixing screw holes are provided at equal intervals on the edge of the connecting rod (5).

3. The graphene film thickness measuring device according to claim 1, wherein: A grid is provided inside the air distribution box (11), and the air distribution box (11) and the fine holes (10) are in communication with each other. The air outlet of the fan (13) is connected to the air inlet of the air distribution box (11) through the air collecting box (12).

4. The graphene film thickness measuring device according to claim 1, wherein: The multi-directional adjustment mechanism comprises a movable slider (15), the inner side of the crossbeam (14) is embedded with the movable slider (15) and is slidably connected thereto, the interior of the movable slider (15) is connected to a transverse threaded rod (16) via a thread, and one end of the transverse threaded rod (16) is connected to the first motor (23); The bottom of the movable slide block (15) is fixedly connected to a movable cross frame (17), guide grooves (18) are provided inside both sides of the top frame (3), and the top ends of both sides of the movable cross frame (17) are connected by limiting guides between the connecting slide (19) and the guide grooves (18). A limiting groove (20) is provided inside the movable cross frame (17), and a longitudinal threaded rod (21) is rotatably connected to the inner side of the limiting groove (20). The outer side of the longitudinal threaded rod (21) is connected to a driving connection block (22) through a thread, and the telescopic arm (4) is fixedly mounted on the bottom of the driving connection block (22), and the end of the longitudinal threaded rod (21) is connected to the second motor (24).

5. The graphene film thickness measuring device according to claim 4, characterized in that: The transverse threaded rod (16) is rotatably connected to the top of the beam (14) through the rotating seats on both sides of the top of the beam (14), and the movable slider (15) is embedded in a movable groove provided inside the beam (14) for sliding connection.

6. The graphene film thickness measuring device according to claim 4, characterized in that: The crossbeam (14) and the movable cross frame (17) are vertically staggered, and the first motor (23) and the second motor (24) are fixedly mounted on the side ends of the crossbeam (14) and the movable cross frame (17), respectively.

Images