Aerogel coating thickness on-line detector

Abstract

The utility model discloses aerogel coating thickness on -line detector, including work table, the upper end of work table is equipped with the support, the inboard of support is driven and is connected with the sliding block through moving mechanism, the bottom of sliding block detachably installs the mounting seat, the bottom of mounting seat is coaxially installed laser displacement sensor and eddy current displacement sensor, one side of support, and located work table's upper end is equipped with controlling means, and the controlling means includes industrial computer, data acquisition card and motion control card. The utility model drives laser displacement sensor and eddy current displacement sensor from left to right scanning through moving mechanism, thereby can according to the continuous measurement of the multiple points of the metal base material width that has been coated with aerogel coating, and eddy current displacement sensor can accurately measure the distance to the metal base material surface, and laser displacement sensor can accurately measure the distance to the aerogel coating surface, and then data acquisition card synchronously gathers these two data and uploads to industrial computer.

Description

Technical Field

[0001] This utility model relates to the field of aerogel coating thickness detection technology, specifically to an online aerogel coating thickness detector. Background Technology

[0002] Aerogel coatings are functional coatings with aerogel as the core component. They are made by dispersing nanoporous aerogel materials in a matrix and possess characteristics such as ultra-low thermal conductivity, lightweight, and high porosity. Due to their excellent thermal insulation and sound insulation properties, aerogel coatings are widely used in aerospace, construction, and electronics industries. Coating thickness is a key quality indicator that directly affects product performance; therefore, it is necessary to measure the thickness of the aerogel coating using a testing instrument.

[0003] Existing methods for measuring aerogel coating thickness mostly involve offline sampling after curing. Offline sampling is prone to lag and cannot provide real-time feedback to adjust the coating process. Furthermore, some aerogel coatings have loose, porous, and uneven surfaces, making single laser point measurements insufficiently representative and compromising accuracy and reliability. Therefore, these methods do not meet current requirements. To address this, we propose an online aerogel coating thickness measuring instrument. Utility Model Content

[0004] The purpose of this invention is to provide an online aerogel coating thickness measuring instrument to solve the problems mentioned in the background art, which are that the existing aerogel coating thickness measurements are mostly performed offline after curing, offline sampling is prone to lag, cannot provide real-time feedback to adjust the coating process, and some aerogel coatings have loose, porous and uneven surfaces, making single laser point measurements insufficiently representative and difficult to guarantee accuracy and reliability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an online aerogel coating thickness detector, comprising a worktable, a support spanning the upper end of the worktable, a slider connected to the inner side of the support via a moving mechanism, a mounting base detachably mounted on the bottom end of the slider, a laser displacement sensor and an eddy current displacement sensor coaxially mounted on the bottom end of the mounting base, and a control device located on one side of the support and at the upper end of the worktable, the control device comprising an industrial computer, a data acquisition card and a motion control card.

[0006] Preferably, the slider has driving cavities on both sides near the bottom, and sliding plates are slidably connected inside the driving cavities on both sides. A spring is fixedly connected between the side of the two sliding plates that are close to each other and the inner wall of the corresponding driving cavity.

[0007] Preferably, each of the two sliding plates has a drive rod that is fixedly connected to the end of the sliding plate away from the spring, which is movable through the drive cavity and extends to the outside of the slider. The bottom end of each of the two drive rods, and the side closer to the sliding plate, is provided with a limiting groove, which is bent.

[0008] Preferably, both sides of the upper end of the mounting base are fixedly connected with limit rods arranged in an inverted L shape, and the upper ends of the two limit rods extend through into the interior of the drive cavity and are engaged with the inner side of the bent end of the limit groove.

[0009] Preferably, the moving mechanism includes a motor, a lead screw, and a slide bar. The lead screw is driven by the motor to the front end located inside the bracket. The slide bar is fixed to the rear side of the lead screw. The front side of the slider near the upper end is threadedly connected to the outer surface of the lead screw, and the rear side of the slider near the upper end is slidably connected to the outer surface of the slide bar.

[0010] Preferably, the motion control card is used to control the motor, the data acquisition card is used to synchronize the measurement data of the laser displacement sensor and the eddy current displacement sensor, and the industrial control computer is used to calculate the actual thickness of the coating based on the data of the laser displacement sensor and the eddy current displacement sensor.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model pushes the drive rods on both sides of the slider, and both drive rods push the sliding plate along the drive cavity to move towards each other and compress the spring. Then, the limiting rods on both sides of the upper end of the mounting base equipped with the laser displacement sensor and the eddy current displacement sensor are inserted into the inside of the drive cavity, and the upper end of the limiting rod is inserted into the inside of the limiting groove. Then, the push on the two drive rods is released. At this time, under the elastic force of the spring, the two drive rods are pushed away from each other, and the inner side of the bottom limiting groove of the drive rod is engaged with one side of the upper end of the limiting rod, thereby fixing the mounting base equipped with the laser displacement sensor and the eddy current displacement sensor to the bottom of the bracket.

[0013] 2. This utility model uses a starting motor to drive a lead screw to rotate, which in turn causes a slider to reciprocate laterally along the slide bar. This, in turn, moves the mounting base below the slider, which is equipped with a laser displacement sensor and an eddy current displacement sensor. By scanning from left to right using the laser displacement sensor and the eddy current displacement sensor, continuous measurements can be taken at multiple points along the width of the metal substrate coated with an aerogel coating. This allows for a comprehensive assessment of the coating's uniformity, avoiding the randomness of single-point measurements. For each measurement point, the eddy current displacement sensor can accurately measure the distance to the surface of the metal substrate, while the laser displacement sensor can accurately measure the distance to the surface of the aerogel coating. Subsequently, a data acquisition card synchronously collects these two data points and uploads them to an industrial control computer, thereby calculating and displaying the coating thickness at that point. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a front sectional view of the entire utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the bracket of this utility model;

[0017] Figure 4 This utility model Figure 2 A schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Workbench; 2. Support; 3. Moving mechanism; 301. Motor; 302. Lead screw; 303. Slide bar; 4. Control device; 401. Industrial computer; 5. Slider; 501. Drive cavity; 6. Mounting base; 7. Laser displacement sensor; 8. Eddy current displacement sensor; 9. Sliding plate; 10. Spring; 11. Drive rod; 1101. Limit groove; 12. Limit rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 4 An embodiment of this utility model provides an online aerogel coating thickness detector, including a worktable 1, a support 2 spanning the upper end of the worktable 1, a slider 5 driven and connected to the inner side of the support 2 by a moving mechanism 3, a mounting base 6 detachably mounted on the bottom end of the slider 5, a laser displacement sensor 7 and an eddy current displacement sensor 8 coaxially mounted on the bottom end of the mounting base 6, and a control device 4 located on one side of the support 2 and at the upper end of the worktable 1, the control device 4 including an industrial computer 401, a data acquisition card and a motion control card.

[0021] The slider 5 has driving cavities 501 on both sides near the bottom. Sliding plates 9 are slidably connected inside the driving cavities 501. Springs 10 are fixedly connected between the side of the two sliding plates 9 that are close to each other and the inner wall of the corresponding driving cavity 501. Driving rods 11 that move through the driving cavity 501 and extend to the outside of the slider 5 are fixedly connected to the end of the two sliding plates 9 away from the springs 10. Limiting grooves 1101 are formed at the bottom of the two driving rods 11 and on the side near the sliding plates 9. The limiting grooves 1101 are bent. Limiting rods 12 that are inverted L-shaped are fixedly connected to both sides of the upper end of the mounting base 6. The upper ends of the two limiting rods 12 extend through the driving cavity 501 and engage with the inner side of the bent end of the limiting groove 1101.

[0022] By pushing the drive rods 11 on both sides of the slider 5, both drive rods 11 push the sliding plate 9 along the drive cavity 501 toward the side that is closer to each other, and compress the spring 10. Then, the limiting rods 12 on both sides of the upper end of the mounting base 6, which is equipped with the laser displacement sensor 7 and the eddy current displacement sensor 8, are inserted into the inside of the drive cavity 501, and the upper end of the limiting rod 12 is inserted into the inside of the limiting groove 1101. Then, the push on the two drive rods 11 is released. At this time, under the elastic force of the spring 10, the two drive rods 11 are pushed away from each other, and the inner side of the bottom limiting groove 1101 of the drive rod 11 is engaged with one side of the upper end of the limiting rod 12, thereby fixing the mounting base 6, which is equipped with the laser displacement sensor 7 and the eddy current displacement sensor 8, to the bottom of the bracket 2.

[0023] The moving mechanism 3 includes a motor 301, a lead screw 302, and a slide bar 303. The lead screw 302 is driven by the motor 301 to the front end located inside the bracket 2. The slide bar 303 is fixedly located on the rear side of the lead screw 302. The front side of the slider 5 near the upper end is threadedly connected to the outer surface of the lead screw 302, and the rear side of the slider 5 near the upper end is slidably connected to the outer surface of the slide bar 303.

[0024] By starting the motor 301 to drive the lead screw 302 to rotate, the slider 5 is driven to move laterally along the slide bar 303. This, in turn, moves the mounting base 6 below the slider 5, which is equipped with a laser displacement sensor 7 and an eddy current displacement sensor 8. By scanning from left to right using the laser displacement sensor 7 and the eddy current displacement sensor 8, continuous measurement can be performed on multiple points of the width of the metal substrate coated with the aerogel coating, so as to comprehensively evaluate the uniformity of the coating and avoid the randomness of single-point measurement.

[0025] The motion control card is used to control the motor 301, the data acquisition card is used to synchronize the measurement data of the laser displacement sensor 7 and the eddy current displacement sensor 8, and the industrial computer 401 is used to calculate the actual thickness of the coating based on the data of the laser displacement sensor 7 and the eddy current displacement sensor 8. The eddy current displacement sensor 8 can accurately measure the distance to the surface of the metal substrate, and the laser displacement sensor 7 can accurately measure the distance to the surface of the aerogel coating. Then the data acquisition card synchronously collects these two data and uploads them to the industrial computer 401, thereby calculating and displaying the coating thickness at that point.

[0026] During aerogel coating thickness detection, by pushing the drive rods 11 on both sides of the slider 5, both drive rods 11 push the sliding plate 9 along the drive cavity 501 toward the side closer to each other, and compress the spring 10. Then, the limiting rods 12 on both sides of the upper end of the mounting base 6, which is equipped with the laser displacement sensor 7 and the eddy current displacement sensor 8, are inserted into the inside of the drive cavity 501, and the upper end of the limiting rod 12 is inserted into the inside of the limiting groove 1101. Then, the push on the two drive rods 11 is released. At this time, under the elastic force of the spring 10, the two drive rods 11 are pushed away from each other, and the inner side of the bottom limiting groove 1101 of the drive rod 11 is engaged with one side of the upper end of the limiting rod 12. Thus, the mounting base 6, which is equipped with the laser displacement sensor 7 and the eddy current displacement sensor 8, is installed and fixed below the bracket 2. The mounting base 6 facilitates installation and disassembly, thus making it easy to disassemble and maintain the laser displacement sensor 7 and the eddy current displacement sensor 8.

[0027] After the laser displacement sensor 7 and eddy current displacement sensor 8 are installed, the metal substrate coated with an uncured aerogel coating is placed under the bracket 2. Then, the motor 301 is started to drive the lead screw 302 to rotate, which in turn drives the slider 5 to move laterally along the slide bar 303. This, in turn, moves the mounting base 6 under the slider 5, which is equipped with the laser displacement sensor 7 and eddy current displacement sensor 8. By scanning from left to right with the laser displacement sensor 7 and eddy current displacement sensor 8, continuous measurement can be performed at multiple points on the width of the metal substrate coated with aerogel coating, so as to comprehensively evaluate the uniformity of the coating and avoid the randomness of single-point measurement. For each measurement point, the eddy current displacement sensor 8 can accurately measure the distance to the surface of the metal substrate, and the laser displacement sensor 7 can accurately measure the distance to the surface of the aerogel coating. Subsequently, the data acquisition card synchronously collects these two data and uploads them to the industrial control computer 401, so as to calculate and display the coating thickness at that point.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An online aerogel coating thickness measuring instrument, comprising a worktable (1), characterized in that: The upper end of the workbench (1) is provided with a support (2). The inner side of the support (2) is connected to a slider (5) by a moving mechanism (3). The bottom end of the slider (5) is detachably mounted with a mounting base (6). The bottom end of the mounting base (6) is coaxially mounted with a laser displacement sensor (7) and an eddy current displacement sensor (8). On one side of the support (2) and at the upper end of the workbench (1), there is a control device (4). The control device (4) includes an industrial computer (401), a data acquisition card and a motion control card.

2. The online aerogel coating thickness measuring instrument according to claim 1, characterized in that: The slider (5) has a drive cavity (501) on both sides near the bottom. The drive cavity (501) on both sides is slidably connected to a sliding plate (9). The two sliding plates (9) are fixedly connected to the inner wall of the corresponding drive cavity (501) on the side that is close to each other, and a spring (10) is fixedly connected to the inner wall of the corresponding drive cavity (501).

3. The online aerogel coating thickness measuring instrument according to claim 2, characterized in that: Both sliding plates (9) are fixedly connected to a drive rod (11) that extends through the drive cavity (501) and extends to the outside of the slider (5) at the end away from the spring (10). The bottom end of both drive rods (11) and the side close to the sliding plate (9) are provided with a limiting groove (1101), which is bent.

4. The online aerogel coating thickness measuring instrument according to claim 3, characterized in that: Both sides of the upper end of the mounting base (6) are fixedly connected with limit rods (12) arranged in an inverted L shape, and the upper ends of the two limit rods (12) extend through the interior of the drive cavity (501) and are engaged with the inner side of the bent end of the limit groove (1101).

5. The online aerogel coating thickness measuring instrument according to claim 1, characterized in that: The moving mechanism (3) includes a motor (301), a lead screw (302) and a slide bar (303). The lead screw (302) is driven by the motor (301) to the front end located inside the bracket (2). The slide bar (303) is fixedly located on the rear side of the lead screw (302). The front side of the slider (5) near the upper end is threadedly connected to the outer surface of the lead screw (302), and the rear side of the slider (5) near the upper end is slidably connected to the outer surface of the slide bar (303).

6. The online aerogel coating thickness measuring instrument according to claim 5, characterized in that: The motion control card is used to control the motor (301), the data acquisition card is used to synchronize the measurement data of the laser displacement sensor (7) and the eddy current displacement sensor (8), and the industrial computer (401) is used to calculate the actual thickness of the coating based on the data of the laser displacement sensor (7) and the eddy current displacement sensor (8).

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