Thickness uniformity detection device and process for nanofiber membrane

Abstract

The invention relates to the technical field of nanofiber membrane detection, and particularly discloses a thickness uniformity detection device and process for nanofiber membranes, and the thickness uniformity detection device comprises a detection table which is provided with a variable-diameter wheel structure, and the thickness uniformity of the nanofiber membranes can be detected by adjusting the variable-diameter wheel structure according to nanofiber membrane bodies with different thicknesses; the flattening roller can apply uniform pressure to a nanofiber membrane body, an adjusting ring frame can move during adjustment and drive an adjusting connecting arm, the angle of the adjusting connecting arm and the angle of an adjusting lead screw are changed, an arc plate can be driven to expand outwards or contract inwards through the change of the adjusting connecting arm, and then the overall diameter of a variable-diameter wheel structure is changed; therefore, the nanofiber membrane bodies with different thicknesses can be smoothed without replacing other smoothing compression rollers, and the detection efficiency of the nanofiber membrane bodies is improved.

Description

Technical Field

[0001] The present application relates to the technical field of nanofiber membrane detection, and in particular to a device and process for detecting thickness uniformity of nanofiber membranes. Background Art

[0002] Nanofiber membranes are mainly made of polymer materials through advanced technologies such as electrospinning. They have excellent properties such as large specific surface area, high porosity, and can be cut. These properties enable nanofiber membranes to play an important role in many fields. For example, they can be used for air or water filtration to improve filtration efficiency and accuracy; in the energy field, they can be used as diaphragms or electrode materials for lithium-ion batteries to improve battery performance and safety; in the biomedical field, they can be used as tissue engineering scaffolds to provide an ideal microenvironment for cell growth.

[0003] To ensure the quality and stability of the product, a white light interferometry thickness sensor is used to detect the thickness uniformity of the nanofiber membrane. The white light interferometry thickness gauge uses the reflection principle of laser to measure and observe the microscopic geometric shape of the surface of parts processed in mechanical manufacturing according to the light section method to measure the thickness of the product. It is a non-contact dynamic measuring instrument. Through detection, problems in the production process can be discovered in time, such as uneven spinning, collection device failure, etc., so that corresponding measures can be taken to improve and optimize them. In order to maintain the flatness of the nanofiber membrane, a pressure roller will be used to smooth the nanofiber membrane before detection to prevent wrinkles on the surface of the nanofiber membrane, thereby improving the detection accuracy.

[0004] However, the current existing technology still has the following problems: the height of the pressure roller is generally fixed. In order to ensure uniform and appropriate pressure during the smoothing process, multiple pressure rollers of different diameters need to be prepared for replacement for nanofiber membranes of different thicknesses. However, this method is relatively cumbersome and reduces the efficiency of the nanofiber membrane. Summary of the invention

[0005] The present application solves the problem in the prior art that the height of the pressure roller is generally fixed by providing a thickness uniformity detection device and process for nanofiber membranes. In order to ensure that uniform and appropriate pressure is applied during the smoothing process, a plurality of pressure rollers of different diameters need to be prepared for replacement for nanofiber membranes of different thicknesses. However, this method is relatively cumbersome and reduces the efficiency of the nanofiber membrane. The present application realizes that there is no need to replace other smoothing rollers, and nanofiber membrane bodies of different thicknesses can be smoothed, thereby improving the detection efficiency of the nanofiber membrane body.

[0006] The present application provides a device for detecting thickness uniformity of a nanofiber membrane, comprising: Testing bench; A transverse carrier, wherein side arms are symmetrically rotatably arranged on both sides of the transverse carrier, a smoothing roller is arranged on the side where the side arms are close to each other, a roller jacket is fixedly arranged on the outer side of the smoothing roller, and a variable diameter wheel structure is arranged on the side where the side arms are far away from each other, and the variable diameter wheel structure is used to change the smoothing height of the smoothing roller; The variable diameter wheel structure includes an adjusting screw rod, an outer side of the adjusting screw rod is threadedly connected to an adjusting ring frame, a plurality of adjusting connecting arms are rotatably arranged on the outer side of the adjusting ring frame, the adjusting connecting arms are inclined, an arc plate is rotatably arranged on the other end of the adjusting connecting arm, a connecting and fixing disk is rotatably arranged on one end of the adjusting screw rod, a connecting short rod is fixedly arranged on the other end of the connecting and fixing disk, a striking block is fixedly arranged on the other end of the connecting short rod, the striking block is fixedly arranged at both ends of the smoothing roller, and the connecting short rod passes through and is rotatably arranged on one side of the side connecting arm.

[0007] Furthermore, a hydraulic rod is arranged above the detection platform, the hydraulic rod is externally connected to a hydraulic cylinder, the hydraulic rod is fixedly arranged at the top of the transverse carrier, the bottom end of the transverse carrier is provided with a transverse movement mechanism and a longitudinal movement mechanism, the bottom end of the longitudinal movement mechanism is provided with a white light interferometry thickness measurement sensor, and the white light interferometry thickness measurement sensor is electrically connected to an external data analyzer.

[0008] Furthermore, light-shielding folding covers are symmetrically fixedly arranged on both sides of the detection platform, magnets are symmetrically fixedly arranged on the sides of the light-shielding folding covers that are close to each other, and the magnets that are close to each other are arranged with opposite poles. A nanofiber membrane body is arranged on the top of the detection platform, and feet are fixedly arranged at the four corners of the bottom end of the detection platform.

[0009] Furthermore, a stable telescopic rod is fixedly provided on the inner side of the arc plate, a fixed rod connecting plate is fixedly provided on the other end of the stable telescopic rod, a fixed pad is fixedly provided on one side of the fixed rod connecting plate, the fixed pad is rotatably provided on the outer side of one end of the adjusting screw rod, a sliding connecting rod is symmetrically fixed on the end surface of the fixed pad plate, the sliding connecting rod is slidably provided on the outer side of the adjusting ring frame, the sliding connecting rod is fixedly connected to the connecting plate, and a rotating disk is fixedly provided on the other end of the adjusting screw rod.

[0010] Furthermore, cover assemblies are provided on both sides of the detection platform, and the cover assemblies include a linkage gear, a connecting adapter plate is fixedly provided at one end of the linkage gear, the connecting adapter plate is fixedly provided on one side of the light-shielding folding cover shell, and a double-sided tooth plate is meshedly provided on the outer side of the linkage gear, and the double-sided tooth plate is fixedly connected to the cross-carrier through a connecting plate and a fixed rod.

[0011] Furthermore, a fixed frame is rotatably provided on the outer side of one end of the linkage gear, and side frames are rotatably provided on both sides of the bottom end of the light-shielding folding cover shell, and the side frames are fixedly provided on one side of the fixed frame, and the fixed frame is detachably provided at the bottom end of the detection table.

[0012] Furthermore, an ash removal structure is provided on the outer side of the smoothing roller, and the ash removal structure includes an ash suction bin, a piston long plate is slidably provided on the inner side of the ash suction bin, a plurality of stabilizing slide rods are fixedly provided on the top of the piston long plate, a top connecting plate is fixedly provided on the other end of the stabilizing slide rod, a lifting touch rod is symmetrically fixedly provided on the bottom end of the top connecting plate, a plurality of return springs are fixedly provided on the top of the ash suction bin, the return springs are provided on the outer side of the stabilizing slide rod, and the return springs are fixedly provided on the bottom end of the piston long plate.

[0013] Furthermore, an ash feeding chamber is provided inside the ash suction bin, the piston long plate is located on the inner side of the ash feeding chamber, the bottom end and one side of the ash suction bin are provided with an entry notch and an exit notch, a ash storage bin is detachably provided on one side of the ash suction bin, and the ash storage bin is arranged in close contact with the pressure roller jacket.

[0014] Furthermore, the dust removal structure also includes a fixed cross bar, both ends of which are fixedly provided with vertical support plates, the vertical support plates are fixedly provided at the top ends of the side-connected rotating arms, and a wool brush is fixedly provided on the outer side of the fixed cross bar, and the wool brush is provided in close contact with the pressure roller jacket.

[0015] The process for detecting the thickness uniformity of nanofiber membranes comprises the following steps: laying the nanofiber membrane body flat on the top of the detection table, adjusting the variable diameter wheel structure according to the different thicknesses of the nanofiber membrane body so that the smoothing roller can give uniform pressure to the nanofiber membrane body, and during adjustment, rotating the adjusting screw rod to move the adjusting ring frame and drive the adjusting connecting arm to change the angle between the adjusting connecting arm and the adjusting screw rod, and driving the arc plate to expand outward or contract inward through the change of the adjusting connecting arm, thereby changing the overall diameter of the variable diameter wheel structure; It should be noted that the variable diameter wheel structure will first contact the detection platform when it descends. The difference between the diameter of the variable diameter wheel structure and the diameter of the smoothing roller is the thickness of the nanofiber membrane body. Therefore, there is no need to replace other smoothing rollers, and the nanofiber membrane bodies of different thicknesses can be smoothed, thereby improving the detection efficiency of the nanofiber membrane body. When the horizontal carrier descends, the double-sided toothed plate will mesh with the linkage gear at the same time and drive it to rotate, so that the light-shielding folding cover can cover the nanofiber membrane body on the top of the test platform to prevent external light from entering and affecting the test results; When the smoothing roller rolls, the friction between the wool brush and the roller jacket in the dust removal structure will generate static electricity, which will then adsorb the dust and fine impurities on the top of the nanofiber membrane body. As the smoothing roller rotates, the piston long plate can generate piston movement, which will suck the dust and fine impurities on the outside of the roller jacket into the ash storage bin for temporary storage, which is convenient for later processing and prevents the roller jacket from affecting the continuous adsorption work, thereby improving the inspection quality of the nanofiber membrane body.

[0016] The technical solution provided by this application has at least the following technical effects or advantages: 1. In the present application, by setting a variable diameter wheel structure, the variable diameter wheel structure can be adjusted according to the different thicknesses of the nanofiber membrane body, so that the smoothing roller can give uniform pressure to the nanofiber membrane body. During adjustment, the adjusting ring frame will move and drive the adjusting connecting arm to change the angle of the adjusting connecting arm and the adjusting screw. The change of the adjusting connecting arm can drive the arc plate to expand outward or contract inward, thereby changing the overall diameter of the variable diameter wheel structure. Therefore, there is no need to replace other smoothing rollers, and nanofiber membrane bodies of different thicknesses can be smoothed, thereby improving the detection efficiency of the nanofiber membrane body.

[0017] 2. In the present application, through the setting of the cover assembly, when the horizontal carrier descends, the double-sided toothed plate will simultaneously mesh with the linkage gear and drive it to rotate, so that the light-shielding folding cover can cover the nanofiber membrane body on the top of the test platform to prevent external light from entering and affecting the test results.

[0018] 3. Through the setting of the dust removal structure, the roller jacket of the present application will cause friction between the wool brush and the smoothing roller during its rolling, so that the outer side of the roller jacket has static electricity, which can absorb dust and impurities on the top of the nanofiber membrane body while smoothing the nanofiber membrane body, thereby improving the inspection quality of the nanofiber membrane body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of an implementation method of the present application; Figure 2 The local structure of the embodiment of this application is shown in FIG. Figure 1 ; Figure 3 This is a schematic diagram of the three-dimensional structure inside the light-shielding folding cover in the embodiment of the present application; Figure 4 for Figure 2 A schematic diagram of the enlarged structure at A in the middle; Figure 5 The local structure of the embodiment of this application is shown in FIG. Figure 2 ; Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B in the middle; Figure 7 It is a schematic diagram of the combined structure of the side-connected rotating arm, the variable diameter wheel structure and the smoothing roller in the embodiment of the present application; Figure 8 This is a schematic diagram of the disassembled structure of the light-shielding folding cover shell and the cover assembly in the embodiment of the present application; Fig. 9 This is a schematic diagram of the combined structure of the transverse carrier, the double-sided toothed plate and the connecting plate fixed rod in the embodiment of the present application; Fig.10 It is a schematic diagram of the split structure of the side-connected rotating arm and the ash removal structure in the implementation manner of the present application.

[0020] In the figure: 1. Testing table; 101. Standing feet; 2. Light-shielding folding cover; 201. Magnet; 3. Hydraulic rod; 4. Horizontal carrier; 401. Horizontal movement mechanism; 402. Vertical movement mechanism; 403. Side-connected rotating arm; 5. Variable diameter wheel structure; 501. Adjusting screw rod; 5011. Turntable; 5012. Connecting fixed connecting plate; 5013. Connecting short rod; 502. Adjusting ring frame; 503. Adjusting connecting arm; 504. Arc plate; 505. Stable telescopic rod; 506. Fixed rod connecting plate; 507. Fixed pad; 508. Sliding fixed connecting rod; 6. Cover assembly; 601. Linkage gear; 602. Linkage adapter plate; 603. Fixed frame; 604. Side frame; 605. Double-sided toothed plate; 606. Connecting plate fixed rod; 7. Ash removal structure; 701. Ash suction bin; 7011. Ash inlet chamber; 702. Return spring; 703. Stable slide bar; 704. Piston long plate; 705. Top connecting plate; 706. Fixed cross bar; 707. Wool brush; 708. Vertical support plate; 709. Lifting touch rod; 710. Touch block; 711. Ash storage bin; 8. Smoothing roller; 801. Roller jacket; 9. White light interferometric thickness sensor; 10. Nanofiber membrane body. DETAILED DESCRIPTION

[0021] The embodiment of the present application discloses a device for detecting the thickness uniformity of nanofiber membranes. By setting a variable diameter wheel structure 5, the variable diameter wheel structure 5 can be adjusted according to the different thicknesses of the nanofiber membrane body 10, so that the smoothing roller 8 can give uniform pressure to the nanofiber membrane body 10. During adjustment, the adjusting ring frame 502 will move and drive the adjusting connecting arm 503, so that the angle of the adjusting connecting arm 503 and the adjusting screw rod 501 will change. The change of the adjusting connecting arm 503 can drive the arc plate 504 to expand outward or contract inward, thereby changing the overall diameter of the variable diameter wheel structure 5. Therefore, there is no need to replace other smoothing rollers 8, and nanofiber membrane bodies 10 of different thicknesses can be smoothed, thereby improving the detection efficiency of the nanofiber membrane body 10.

[0022] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Reference Figure 2 , Figure 3 and Figure 4 , the thickness uniformity detection device for nanofiber membrane disclosed in the embodiment of the present application includes a variable diameter wheel structure 5 with adjustable diameter, and the variable diameter wheel structure 5 is also used to change the smoothing height of the smoothing roller 8, the variable diameter wheel structure 5 includes an adjusting screw 501, the outer side of the adjusting screw 501 is threadedly connected to an adjusting ring frame 502, the outer side of the adjusting ring frame 502 is rotatably provided with a plurality of adjusting connecting arms 503, the adjusting connecting arms 503 are inclined, and the other end of the adjusting connecting arms 503 is rotatably provided with an arc plate 504, one end of the adjusting screw 501 is rotatably provided with a connecting plate 5012, the other end of the connecting plate 5012 is fixedly provided with a connecting short rod 5013, and the other end of the connecting short rod 5013 is fixedly provided with a striking block 710, the striking block 710 is fixedly provided at both ends of the smoothing roller 8, and the connecting short rod 5013 penetrates and is rotatably provided on one side of the side connecting arm 403.

[0024] When testing a nanofiber membrane body 10 of different thicknesses, the turntable 5011 in the variable diameter wheel structure 5 is rotated, thereby driving the adjusting screw 501 to rotate. The rotation of the adjusting screw 501 drives the adjusting ring frame 502 to move, so that the angle between the adjusting connecting arm 503 and the adjusting screw 501 becomes larger or smaller, thereby causing the arc plate 504 to expand or contract. When the angle between the adjusting connecting arm 503 and the adjusting screw 501 becomes larger, the arc plate 504 is in an expanded state, otherwise, the arc plate 504 is in a contracted state, and the minimum diameter of the variable diameter wheel structure 5 is the same as the outer diameter of the pressure roller sleeve 801, so that the variable diameter wheel structure 5 can first contact the detection table 1, and the diameter difference between the variable diameter wheel structure 5 and the pressure roller sleeve 801 is the thickness of the nanofiber membrane body 10, so there is no need to replace other smoothing rollers 8, thereby improving the detection efficiency of the nanofiber membrane body 10.

[0025] Among them, a stable telescopic rod 505 is fixedly arranged on the inner side of the arc plate 504, a fixed rod connecting plate 506 is fixedly arranged on the other end of the stable telescopic rod 505, a fixed pad 507 is fixedly arranged on one side of the fixed rod connecting plate 506, the fixed pad 507 is rotatably arranged on the outside of one end of the adjusting screw rod 501, a sliding connecting rod 508 is symmetrically fixed on the end surface of the fixed pad 507, the sliding connecting rod 508 is slidably arranged on the outside of the adjusting ring frame 502, the sliding connecting rod 508 is fixedly connected to the connecting plate 5012, and a turntable 5011 is fixedly arranged on the other end of the adjusting screw rod 501.

[0026] The stable telescopic rod 505 can be lengthened or shortened following the expansion and contraction of the arc plate 504, so that the arc plate 504 can move in a directional manner, and when the adjustment ring frame 502 moves, it will slide along the sliding connecting rod 508 and stabilize the position change of the adjustment ring frame 502.

[0027] It should be noted that, see Figure 2 and Figure 7 , and also includes a horizontal carrier 4 for carrying the dust removal structure 7, and side arms 403 are symmetrically rotatably arranged on both sides of the horizontal carrier 4, and a smoothing roller 8 is arranged on the side where the side arms 403 are close to each other, and a roller jacket 801 is fixedly arranged on the outer side of the smoothing roller 8.

[0028] When the cross carriage 4 descends, the angle between the side arms 403 becomes larger, so that the roller cover 801 can contact the nanofiber membrane body 10 and the smoothing roller 8 can roll, thereby achieving a smoothing effect on the nanofiber membrane body 10 .

[0029] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , and also includes a hydraulic rod 3 for adjusting the height of the transverse carrier 4, the hydraulic rod 3 is externally connected to a hydraulic cylinder, the hydraulic rod 3 is fixedly arranged at the top of the transverse carrier 4, the bottom end of the transverse carrier 4 is provided with a transverse movement mechanism 401 and a longitudinal movement mechanism 402, the bottom end of the longitudinal movement mechanism 402 is provided with a white light interferometric thickness sensor 9, and the white light interferometric thickness sensor 9 is electrically connected to an external data analyzer, The data detected by the white light interferometric thickness sensor 9 will be transmitted to the data analyzer so that the staff can visually see the test results. The hydraulic rod 3 can be extended or shortened through the external hydraulic cylinder, so that the detection work can be carried out.

[0030] Based on the above scheme, refer to Figure 1 , Figure 2 , Figure 3 , Figure 8 and Fig. 9, a cover assembly 6 is provided on both sides of the detection platform 1, and the cover assembly 6 includes a linkage gear 601, one end of the linkage gear 601 is fixedly provided with a connection adapter plate 602, the connection adapter plate 602 is fixedly provided on one side of the light-shielding folding cover shell 2, and a double-sided tooth plate 605 is meshed on the outer side of the linkage gear 601, and the double-sided tooth plate 605 is fixedly connected to the horizontal carrier 4 through a connecting plate fixed rod 606, and a fixed frame 603 is rotatably provided on the outer side of one end of the linkage gear 601, and the bottom end of the light-shielding folding cover shell 2 Side frames 604 are rotatably arranged on both sides, and the side frames 604 are fixedly arranged on one side of the fixed frame 603. The fixed frame 603 is detachably arranged on the bottom end of the testing platform 1. Light-shielding folding cover shells 2 are symmetrically fixedly arranged on both sides of the testing platform 1, and magnets 201 are symmetrically fixedly arranged on the sides of the light-shielding folding cover shells 2 that are close to each other. The magnets 201 that are close to each other are arranged with opposite poles. A nanofiber membrane body 10 is arranged on the top of the testing platform 1, and feet 101 are fixedly arranged at the four corners of the bottom end of the testing platform 1.

[0031] As the cross carriage 4 descends, the double-sided tooth plate 605 in the cover assembly 6 will contact the linkage gear 601, and as the double-sided tooth plate 605 descends, the linkage gear 601 is driven to rotate. The two linkage gears 601 on the same side rotate in opposite directions, so that the connecting plate 602 can be driven to rotate, and the two light-shielding folding cover shells 2 will be driven to merge, thereby protecting the detection environment inside the light-shielding folding cover shells 2, preventing external dust and impurities from continuing to contact the nanofiber membrane body 10, and preventing external light from affecting the detection of the white light interference thickness sensor 9.

[0032] Based on the above scheme, refer to Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Fig.10 A dust removal structure 7 is arranged on the outer side of the smoothing roller 8, and the dust removal structure 7 includes an dust suction bin 701, and a piston long plate 704 is slidingly arranged on the inner side of the dust suction bin 701, and a plurality of stabilizing slide bars 703 are fixedly arranged on the top of the piston long plate 704, and a top connecting plate 705 is fixedly arranged on the other end of the stabilizing slide bar 703, and a lifting touch rod 709 is symmetrically fixedly arranged on the bottom end of the top connecting plate 705, and a plurality of return springs 702 are fixedly arranged on the top of the dust suction bin 701, and the return spring 702 is arranged on the outer side of the stabilizing slide bar 703, and the return spring 702 is fixedly arranged on the bottom end of the piston long plate 704.

[0033] When the smoothing roller 8 rotates, it will drive the striking block 710 to rotate together, and it will contact the lifting contact rod 709 once every rotation, so that the lifting contact rod 709 can drive the top connecting plate 705, the stabilizing slide rod 703 and the piston long plate 704 to rise. At this time, the reset spring 702 is in an extended state. When the striking block 710 leaves the lifting contact rod 709, the piston long plate 704 quickly returns to its original position due to the elastic force of the reset spring 702. The piston long plate 704 completes a piston movement, and then sucks the impurities and fine impurities attached to the surface of the roller jacket 801 into the ash inlet chamber 7011.

[0034] Among them, an ash feeding chamber 7011 is arranged inside the ash suction bin 701, the piston long plate 704 is located on the inner side of the ash feeding chamber 7011, the bottom and one side of the ash suction bin 701 are provided with an entry notch and an exit notch, and a ash storage bin 711 is detachably arranged on one side of the ash suction bin 701, and the ash storage bin 711 is arranged in close contact with the pressure roller jacket 801.

[0035] The ash inlet chamber 7011 provided inside is used for the piston long plate 704 to perform piston movement, and the entry gap is opened so that dust and impurities outside the pressure roller jacket 801 can be sucked into the ash inlet chamber 7011, and then enter the ash storage bin 711 through the entry and exit gap for collection and storage, so as to facilitate centralized processing at a later time.

[0036] Furthermore, the dust removal structure 7 also includes a fixed cross bar 706, and vertical support plates 708 are fixedly provided at both ends of the fixed cross bar 706. The vertical support plates 708 are fixedly provided at the top of the side-connected rotating arm 403. A wool brush 707 is fixedly provided on the outer side of the fixed cross bar 706, and the wool brush 707 is provided in close contact with the pressure roller jacket 801.

[0037] When the roller cover 801 rotates, it rubs against the wool brush 707 , so that the surface of the roller cover 801 is attached with static electricity, which is used to absorb dust and fine impurities on the top of the nanofiber membrane body 10 , thereby improving the inspection quality of the nanofiber membrane body 10 .

[0038] On the basis of the above-mentioned scheme, the embodiment of the present application also provides a thickness uniformity detection process for nanofiber membranes, comprising the following steps: the nanofiber membrane body 10 is laid flat on the top of the detection platform 1, and the variable diameter wheel structure 5 can be adjusted according to the different thicknesses of the nanofiber membrane body 10 so that the smoothing roller 8 can give uniform pressure to the nanofiber membrane body 10. During adjustment, the adjusting screw 501 is rotated to move the adjusting ring frame 502 and drive the adjusting connecting arm 503 to change the angle between the adjusting connecting arm 503 and the adjusting screw 501. The arc plate 504 can be driven to expand outward or contract inward by the change of the adjusting connecting arm 503, thereby changing the overall diameter of the variable diameter wheel structure 5; It should be noted that the variable diameter wheel structure 5 will first contact the detection platform 1 when descending, and the difference between the diameter of the variable diameter wheel structure 5 and the diameter of the smoothing roller 8 is the thickness of the nanofiber membrane body 10, so there is no need to replace other smoothing rollers 8, and the nanofiber membrane bodies 10 of different thicknesses can be smoothed, thereby improving the detection efficiency of the nanofiber membrane body 10; When the horizontal carrier 4 descends, the double-sided toothed plate 605 will mesh with the linkage gear 601 at the same time and drive it to rotate, so that the light-shielding folding cover 2 can cover the nanofiber membrane body 10 on the top of the detection platform 1 to prevent external light from entering and affecting the detection results; While the smoothing roller 8 is rolling, the friction between the wool brush 707 and the roller jacket 801 in the dust removal structure 7 will generate static electricity, thereby adsorbing the dust and fine impurities on the top of the nanofiber membrane body 10. As the smoothing roller 8 rotates, the piston long plate 704 can generate piston movement, sucking the dust and fine impurities on the outside of the roller jacket 801 into the ash storage bin 711 for temporary storage, which is convenient for later processing and prevents the roller jacket 801 from being affected in the continuous adsorption work, thereby improving the inspection quality of the nanofiber membrane body 10.

[0039] Working principle: When the thickness uniformity of the nanofiber membrane body 10 is tested, the hydraulic rod 3 is driven by an external hydraulic cylinder to drive the horizontal carrier 4 to descend. After the descent, the variable diameter wheel structure 5 first contacts the top of the test platform 1, and the roller jacket 801 contacts the nanofiber membrane body 10. As the horizontal carrier 4 descends, the variable diameter wheel structure 5 and the smoothing roller 8 will roll. The rolling of the smoothing roller 8 can smooth the nanofiber membrane body 10 to prevent wrinkles on the surface of the nanofiber membrane body 10. When the horizontal carrier 4 descends, the double-sided toothed plate 605 in the cover assembly 6 will contact the linkage gear 601, and as the double-sided toothed plate 605 descends, the linkage gear 601 is driven to rotate, and the two linkage gears 601 on the same side rotate in opposite directions, so that the connecting plate 602 can be driven to rotate, and the two light-shielding folding cover shells 2 will be driven to merge, thereby protecting the detection environment inside the light-shielding folding cover shell 2, preventing external dust and impurities from continuing to contact the nanofiber membrane body 10, and preventing external light from affecting the detection of the white light interference thickness sensor 9; And due to the setting of the variable diameter wheel structure 5, the height between the white light interference thickness sensor 9 and different thicknesses is the same, and under the same conditions, a more accurate detection result can be obtained; When the double-sided tooth plate 605 rises, the linkage gear 601 will rotate in the opposite direction, causing the connecting plate 602 to move in the opposite direction. At this time, the light-shielding folding cover 2 will open, and the nanofiber membrane body 10 after detection will be taken out, and the nanofiber membrane body 10 to be detected will be put in. It is simple and convenient to use; When the roller cover 801 rotates, it will rub against the wool brush 707, so that the surface of the roller cover 801 has static electricity, which can absorb dust and fine impurities on the top of the nanofiber membrane body 10 during the rotation process, thereby improving the detection accuracy of the thickness uniformity of the nanofiber membrane body 10; At the same time, the rotation of the smoothing roller 8 will drive the striking block 710 to rotate together, and it will contact the lifting contact rod 709 once every rotation, so that the lifting contact rod 709 can drive the top connecting plate 705, the stabilizing sliding rod 703 and the piston long plate 704 to rise. At this time, the return spring 702 is in an extended state. When the striking block 710 leaves the lifting contact rod 709, the piston long plate 704 quickly returns to its original position due to the elastic force of the return spring 702, and the piston long plate 704 completes a piston movement, thereby sucking the dust and fine impurities attached to the surface of the roller jacket 801 into the ash inlet chamber 7011, and entering the ash storage bin 711 through the inlet and outlet gaps. It should be noted that the ash storage bin 711 is set in a "┐" shape to prevent dust and impurities entering the ash storage bin 711 from flowing out, so that the roller jacket 801 can continue to absorb dust and fine impurities on the top of the nanofiber membrane body 10, thereby improving the detection quality of the nanofiber membrane body 10; Among them, if the nanofiber membrane body 10 of different thicknesses is to be tested, the turntable 5011 in the variable diameter wheel structure 5 is rotated, thereby driving the adjusting screw 501 to rotate, and the rotation of the adjusting screw 501 drives the adjusting ring frame 502 to move, so that the angle between the adjusting connecting arm 503 and the adjusting screw 501 becomes larger or smaller, thereby causing the arc plate 504 to expand or contract. When the angle between the adjusting connecting arm 503 and the adjusting screw 501 becomes larger, the arc plate 504 is in an expanded state, otherwise, the arc plate 504 is In the contracted state, the minimum diameter of the variable wheel structure 5 is the same as the outer diameter of the pressure roller jacket 801, so that the variable wheel structure 5 can first contact the detection platform 1, and the diameter difference between the variable wheel structure 5 and the pressure roller jacket 801 is the thickness of the nanofiber membrane body 10. In this way, there is no need to replace other smoothing rollers 8, thereby improving the detection efficiency of the nanofiber membrane body 10, and making the pressure provided by the smoothing roller 8 to the nanofiber membrane body 10 uniform and smooth, without excessively compressing the nanofiber membrane body 10, further improving the detection accuracy.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0041] What has been described above is only a preferred specific implementation manner of the embodiments of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A device for detecting the thickness uniformity of a nanofiber membrane, characterized in that: include: A testing platform (1) is provided with a white light interferometric thickness measuring sensor (9); A transverse carrier (4), wherein side rotating arms (403) are symmetrically arranged on both sides of the transverse carrier (4), a smoothing roller (8) is arranged on the side of the side rotating arms (403) close to each other, and a variable diameter wheel structure (5) is arranged on the side of the side rotating arms (403) away from each other, and the variable diameter wheel structure (5) is used to change the smoothing height of the smoothing roller (8); The variable diameter wheel structure (5) comprises an adjusting screw rod (501), the outer side of the adjusting screw rod (501) is threadedly connected to an adjusting ring frame (502), the outer side of the adjusting ring frame (502) is rotatably provided with a plurality of adjusting connecting arms (503), and the adjusting connecting arms (503) are arranged in an inclined manner; The other end of the adjusting connecting arm (503) is rotatably provided with an arc plate (504), one end of the adjusting screw rod (501) is rotatably provided with a connecting plate (5012), and the other end of the connecting plate (5012) is fixedly provided with a connecting short rod (5013); A striking block (710) is fixedly provided at the other end of the connecting short rod (5013), and the striking block (710) is fixedly provided at both ends of the smoothing roller (8). The connecting short rod (5013) penetrates and is rotatably provided at one side of the side-connected rotating arm (403).

2. The device for detecting thickness uniformity of nanofiber membranes according to claim 1, characterized in that: A hydraulic rod (3) is arranged above the detection platform (1), and the hydraulic rod (3) is fixedly arranged on the top end of the horizontal carrier (4); The bottom end of the transverse carrier (4) is provided with a transverse movement mechanism (401) and a longitudinal movement mechanism (402); The white light interferometric thickness measurement sensor (9) is arranged at the bottom end of the longitudinal movement mechanism (402), and the white light interferometric thickness measurement sensor (9) is electrically connected to an external data analyzer.

3. The device for detecting thickness uniformity of nanofiber membranes according to claim 1, characterized in that: Light-shielding folding covers (2) are symmetrically fixedly arranged on both sides of the detection platform (1); magnets (201) are symmetrically fixedly arranged on the sides of the light-shielding folding covers (2) that are close to each other; the magnets (201) that are close to each other are arranged with different poles; and feet (101) are fixedly arranged at the four corners of the bottom end of the detection platform (1).

4. The device for detecting thickness uniformity of nanofiber membranes according to claim 1, characterized in that: A stable telescopic rod (505) is fixedly provided on the inner side of the arc plate (504), and a fixed rod connecting plate (506) is fixedly provided on the other end of the stable telescopic rod (505); A fixed pad (507) is fixedly disposed on one side of the fixed rod connecting plate (506), and the fixed pad (507) is rotatably disposed on the outer side of one end of the adjusting screw rod (501); A sliding connecting rod (508) is symmetrically fixedly disposed on the end surface of the fixed pad (507), and the sliding connecting rod (508) is slidably disposed on the outside of the adjustment ring frame (502); The sliding connecting rod (508) is fixedly connected to the connecting disk (5012), and a rotating disk (5011) is fixedly provided on the other end of the adjusting screw rod (501).

5. The device for detecting thickness uniformity of nanofiber membranes according to claim 1, characterized in that: Cover components (6) are provided on both sides of the testing platform (1); The cover assembly (6) comprises a linkage gear (601), one end of which is fixedly provided with a linkage adapter plate (602), the linkage adapter plate (602) being fixedly provided on one side of the light-shielding folding cover shell (2), the outer side of the linkage gear (601) being meshed with a double-sided toothed plate (605), the double-sided toothed plate (605) being fixedly connected to the horizontal carrier (4) via a connecting plate fixed rod (606).

6. The device for detecting thickness uniformity of nanofiber membranes according to claim 5, characterized in that: A fixed frame (603) is rotatably arranged on the outer side of one end of the linkage gear (601), and side frames (604) are rotatably arranged on both sides of the bottom end of the light-shielding folding cover (2). The side frames (604) are fixedly arranged on one side of the fixed frame (603), and the fixed frame (603) is detachably arranged on the bottom end of the detection platform (1).

7. The device for detecting thickness uniformity of nanofiber membranes according to claim 1, characterized in that: The outer side of the smoothing roller (8) is provided with an ash removal structure (7), and a roller jacket (801) is fixedly provided on the outer side; The ash removal structure (7) comprises an ash suction bin (701), a piston long plate (704) is slidably arranged on the inner side of the ash suction bin (701), a plurality of stabilizing slide bars (703) are fixedly arranged on the top of the piston long plate (704), a top connecting plate (705) is fixedly arranged on the other end of the stabilizing slide bar (703), and a lifting contact rod (709) is symmetrically fixedly arranged on the bottom end of the top connecting plate (705); A plurality of return springs (702) are fixedly arranged at the top end of the ash suction bin (701), the return springs (702) are arranged on the outside of the stabilizing slide rod (703), and the return springs (702) are fixedly arranged at the bottom end of the piston long plate (704).

8. The device for detecting thickness uniformity of nanofiber membranes according to claim 7, characterized in that: An ash feeding chamber (7011) is provided inside the ash suction bin (701), the piston long plate (704) is located on the inner side of the ash feeding chamber (7011), an entry notch and an entry / exit notch are provided at the bottom and one side of the ash suction bin (701), and a detachable ash storage bin (711) is provided on one side of the ash suction bin (701), and the ash storage bin (711) is arranged to fit the pressure roller jacket (801).

9. The device for detecting thickness uniformity of nanofiber membranes according to claim 7, characterized in that: The dust removal structure (7) further comprises a fixed cross bar (706), both ends of which are fixedly provided with vertical support plates (708), the vertical support plates (708) being fixedly provided at the top ends of the side-connected rotating arms (403), and a wool brush (707) being fixedly provided on the outer side of the fixed cross bar (706), the wool brush (707) being provided in close contact with the pressure roller jacket (801).

10. A process for detecting the thickness uniformity of a nanofiber membrane, characterized in that: The device for detecting the thickness uniformity of a nanofiber membrane as claimed in any one of claims 1 to 9 comprises the following steps: Laying the nanofiber membrane body (10) flat on the top of the testing platform (1); According to the different thicknesses of the nanofiber membrane body (10), the variable diameter wheel structure (5) can be adjusted so that the smoothing roller (8) can apply uniform pressure to the nanofiber membrane body (10); During adjustment, the adjusting screw rod (501) is rotated to move the adjusting ring frame (502) and drive the adjusting connecting arm (503) so that the angle between the adjusting connecting arm (503) and the adjusting screw rod (501) changes. The arc plate (504) can be expanded outward or contracted inward by the change of the adjusting connecting arm (503) to change the overall diameter of the variable diameter wheel structure (5); When the variable diameter wheel structure (5) descends, it will first contact the detection platform (1), and the difference between the diameter of the variable diameter wheel structure (5) and the diameter of the smoothing roller (8) is the thickness of the nanofiber membrane body (10); When the horizontal carrier (4) descends, the double-sided toothed plate (605) will simultaneously mesh with the linkage gear (601) and drive it to rotate, so that the light-shielding folding cover (2) can cover the nanofiber membrane body (10) on the top of the detection platform (1) to prevent external light from entering and affecting the detection results; While the smoothing roller (8) is rolling, friction between the wool brush (707) in the dust removal structure (7) and the roller jacket (801) generates static electricity, thereby absorbing dust and fine impurities on the top of the nanofiber membrane body (10). As the smoothing roller (8) rotates, the piston long plate (704) can generate piston movement, sucking dust and fine impurities outside the roller jacket (801) into the ash storage bin (711) for temporary storage, thereby improving the inspection quality of the nanofiber membrane body (10).

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