A sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device

Abstract

The application discloses a kind of sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection devices, it is related to detection device technical field, including conveyer belt, the surface of conveyer belt is fixed with chain near both sides, and the top of conveyer belt is provided with automatic positioning assembly.A kind of sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device, in the process of using transducer body to carry out acoustic impedance and thickness detection to sound-absorbing composite material metal sheet, first by the action of two contacts, make transducer body always keep a certain distance from metal sheet, and by two flattening roller, the surface of metal sheet is pressed and flattened, guarantee the flatness of the surface of metal sheet, at the same time, by the action of elastic sheet, when metal sheet is warped, strengthen the pressing intensity on the surface of metal sheet, by many parties cooperation, so that the detection result accuracy is improved in the process of detection.

Description

Technical Field

[0001] This invention relates to the field of detection device technology, specifically to a synchronous online intelligent detection device for the acoustic impedance thickness of sound-absorbing composite materials. Background Technology

[0002] Sound-absorbing composite materials are multi-layered materials made by hot pressing, bonding, and compounding two or more acoustic substrates with different functions. They utilize the complementary acoustic impedance, porosity, and damping characteristics of each layer to solve the shortcomings of single materials, such as narrow sound absorption bandwidth, poor low-frequency noise reduction, lack of sound insulation, flame retardancy, and lightweight. The sound-absorbing composite material acoustic impedance and thickness synchronous online intelligent detection device is a comprehensive detection equipment based on the acoustic impedance principle, integrating acoustic impedance, thickness measurement, and intelligent analysis.

[0003] In the prior art, transducers are often used to perform non-destructive testing on the acoustic impedance and thickness of sound-absorbing composite materials. For example, Chinese patent application CN118149957A discloses an acoustic impedance testing system and its testing method. The testing system has a simple structure and uses a high-frequency underwater acoustic transducer to build an acoustic impedance testing system for materials with sound velocities within a specific range. This system can solve the current difficulties in testing the sound velocities of materials below a specific range and reduce the dependence on large testing equipment during measurement. Transducer testing has advantages such as minimal material damage and high testing accuracy, and is widely used in the field of acoustic impedance testing. However, when testing thin metal sheet sound-absorbing materials, the vertical distance between the transducer and the composite material needs to be controlled within a tolerance range of ±5 mm. Since the metal sheet itself is thin, it is prone to bending and warping during the testing process. The deformation of the material surface will cause the distance between it and the transducer to change, ultimately affecting the accuracy of the test results.

[0004] Therefore, we propose a synchronous online intelligent detection device for the acoustic impedance thickness of sound-absorbing composite materials to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a synchronous online intelligent detection device for acoustic impedance and thickness of sound-absorbing composite materials, so as to solve the problem mentioned in the background art that the accuracy of detection is reduced due to the unevenness of the surface of the metal thin plate in the sound-absorbing composite material.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a synchronous online intelligent detection device for the acoustic impedance and thickness of sound-absorbing composite materials, comprising a conveyor belt, chains fixed near both sides of the surface of the conveyor belt, an automatic positioning component at the top of the conveyor belt, the automatic positioning component including a transducer body for measuring the acoustic impedance and thickness of the sound-absorbing composite material, connecting rods fixed on both sides of the transducer body, contacts fixedly connected to the bottom of the connecting rods, and a leveling component, the leveling component including four supports, a spring sheet provided between the outer surfaces of each pair of adjacent supports, a limiting shaft fixedly embedded between the inner walls of each pair of opposite supports, and leveling rollers movably sleeved on the outer surfaces of the two limiting shafts.

[0007] Preferably, the automatic positioning component further includes a mounting bracket, the top of which has a sliding groove, the outer surface of the slider slides in relation to the inside of the sliding groove, and a ball is movably embedded inside the contact, the ball making rotatable contact with the upper surface of the metal sheet.

[0008] Preferably, the leveling assembly further includes two mounting blocks, the tops of which are fixedly connected to the inner top surface of the mounting frame, and a rotating shaft is movably embedded between the relative inner walls of the two mounting blocks. The outer surface of the rotating shaft is fixedly connected to the inner wall of the bracket. The spring sheet is arc-shaped, and the number of leveling rollers is two sets, which are symmetrically distributed on both sides of the transducer body.

[0009] Preferably, the outer surface of the leveling roller is provided with a plurality of mounting grooves, and a spring is provided on the inner wall of the mounting groove, with an extrusion member fixed to one end of the spring.

[0010] Preferably, the outer surface of the extruder extends through the outside of the mounting groove, the outer surface of the extruder is arc-shaped, and the number of extruders is several groups distributed in a ring array.

[0011] Preferably, the top of the conveyor belt is further provided with an application component, which includes two fixing frames, the outer surfaces of which are fixedly connected to the support frame portion in the conveyor belt.

[0012] Preferably, a collection bin is fixed between the outer surfaces of the two fixed frames, a scraper is fixed between the opposite inner walls of the collection bin, and a recycling chamber is provided inside the collection bin.

[0013] Preferably, the support frame portion of the conveyor belt is fixed with two fixing plates, and a connecting rod is movably embedded between the opposing inner walls of the two fixing plates.

[0014] Preferably, a storage cylinder is fixedly sleeved on the outer surface of the connecting rod, the outer surface of the storage cylinder is in contact with the outer surface of the scraper, the storage cylinder is hollow, the storage cylinder is filled with coupling agent, and multiple pressure nozzles are provided on the outer surface of the storage cylinder.

[0015] Preferably, gears are fixedly fitted on the outer surface of the connecting rod near both ends, and the gears are meshed with the chain for transmission.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In the process of using the transducer body to test the acoustic impedance and thickness of the sound-absorbing composite metal sheet, the transducer body is kept at a certain distance from the metal sheet by the action of two contacts. The surface of the metal sheet is pressed and flattened by two flattening rollers to ensure the flatness of the metal sheet surface. At the same time, the spring sheet can strengthen the pressing intensity on the surface of the metal sheet when it is lifted. Through the cooperation of multiple factors, the accuracy of the test results is improved during the metal sheet testing process, which solves the problem of inaccurate results when testing the acoustic impedance and thickness of metal sheets in the existing technology.

[0017] 2. In addition, during the process of pressing and flattening the metal sheet using the flattening roller, when the extruder rotates to the position of contacting the metal sheet, the extruder is forced to move into the interior of the mounting groove, causing the spring to be compressed and shortened. The spring then extends under its own elastic force, driving the extruder to move outward, locally pressing the surface of the metal sheet, thereby further flattening the surface of the metal sheet and improving the accuracy of the inspection.

[0018] 3. As the metal sheet moves toward the bottom of the transducer body, it drives two gears to rotate, which in turn drives the storage cylinder to rotate. Under the action of extrusion pressure, the couplant stored in the storage cylinder is output outward and evenly coated onto the surface of the metal sheet. Excess couplant remaining on the surface is scraped off by the scraper and stored in the recovery chamber, thus ensuring the uniform coating of the couplant and improving the accuracy of the detection results. Attached Figure Description

[0019] Figure 1 This is a frontal perspective view of a sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device according to the present invention; Figure 2 This is a side perspective view of a sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device according to the present invention; Figure 3 This is a perspective view of the automatic positioning component of a synchronous online intelligent detection device for acoustic impedance thickness of sound-absorbing composite materials according to the present invention. Figure 4This is a perspective view of the planarization component of the sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device of the present invention; Figure 5 This is a three-dimensional cross-sectional view of the flattening roller portion of the sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 This is a perspective view of the coating component of a synchronous online intelligent detection device for acoustic impedance thickness of sound-absorbing composite material according to the present invention. Figure 8 This is a partial sectional perspective view of the collection chamber of a synchronous online intelligent detection device for acoustic impedance thickness of sound-absorbing composite materials according to the present invention.

[0020] In the picture: 1. Conveyor belt; 2. Chain; 3. Automatic positioning assembly; 301. Mounting bracket; 302. Slide rail; 303. Slider; 304. Transducer body; 305. Connecting rod; 306. Contact; 307. Ball bearing; 4. Leveling assembly; 401. Mounting block; 402. Rotating shaft; 403. Bracket; 404. Limiting shaft; 405. Spring; 406. Leveling roller; 407. Mounting groove; 408. Spring; 409. Extrusion component; 5. Coating assembly; 501. Fixing frame; 502. Collection bin; 503. Scraper; 504. Recovery chamber; 505. Fixing plate; 506. Connecting rod; 507. Storage cylinder; 508. Gear; 509. Pressure nozzle. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-8The present invention provides a technical solution: a synchronous online intelligent detection device for acoustic impedance and thickness of sound-absorbing composite material, comprising a conveyor belt 1, chains 2 fixed on both sides of the surface of the conveyor belt 1, an automatic positioning component 3 on the top of the conveyor belt 1, the automatic positioning component 3 including a transducer body 304 for measuring the acoustic impedance and thickness of the sound-absorbing composite material, connecting rods 305 fixed on both sides of the transducer body 304, contacts 306 fixedly connected to the bottom of the connecting rods 305, and a leveling component 4, the leveling component 4 including four supports 403, a spring piece 405 between the outer surfaces of each two adjacent supports 403, a limiting shaft 404 fixedly embedded between the inner walls of each two opposite supports 403, and a leveling roller 406 movably sleeved on the outer surfaces of the two limiting shafts 404.

[0023] In the process of testing the acoustic impedance and thickness of the metal sheet sound-absorbing composite material, the metal sheet is first placed on conveyor belt 1. The working principle of conveyor belt 1 is as follows: the drive device drives the output shaft to rotate, the output shaft drives the drive roller to rotate, and the friction between the drive roller and the conveyor belt drives the conveyor belt and the metal sheet on it to move together. This is a mature existing technology and will not be described in detail here. The metal sheet is transported to the bottom of the transducer body 304 by the conveyor belt 1. The transducer body 304 tests the acoustic impedance and thickness of the metal sheet. During the test, the transducer body 304 uses a PU sound intensity probe, which integrates a sound pressure transducer and a particle velocity transducer. By setting the transducer body 304 on top of the metal sheet, the sound pressure and particle vibration velocity at that point are measured simultaneously. The acoustic impedance of the material can be directly calculated by the ratio of the measured sound pressure to the particle velocity, and its sound absorption coefficient and reflection factor can be further obtained. Since the transducer body 304 needs to be placed on a... A suitable vertical distance is needed to place the workpiece under test in an area with relatively uniform sound beam energy distribution. This distance needs to be precisely controlled to ensure signal strength while avoiding the near-field region. To ensure the accuracy of the transducer body 304 detection, the vertical distance between the transducer body 304 and the top of the metal plate needs to be controlled within a tolerance range of ±5 mm. To ensure that the transducer body 304 is always at a certain distance from the metal plate, the connecting rods 305 symmetrically distributed on both sides of the transducer body 304 will support the contact 306. The conveyor belt 1 transports the metal plate. During the process, the contact 306 will always slide in contact with the upper surface of the metal plate under the action of gravity. When the surface of the plate bends upward or downward, the contact 306 contacts the surface of the plate. The contact 306 drives the transducer body 304 to move synchronously along the shape change of the plate surface through the connecting rod 305, so that the lower end of the transducer body 304 is always kept within an appropriate range from the upper surface of the plate. This can effectively reduce the detection error caused by the distance change, and further improve the detection accuracy of the acoustic impedance characteristics of the metal plate. Furthermore, since the contact 306 is in contact with the surface of the metal sheet under the action of the connecting rod 305, the transducer body 304 and its own gravity, the contact 306 at both ends of the transducer body 304 will apply a certain downward pressure to the sheet, which can reduce the bending deformation amplitude of the sheet to a certain extent, help improve the flatness of the sheet surface, and further reduce the impact of sheet deformation on detection accuracy. Meanwhile, during the conveying of the thin metal sheet, in order to reduce the bending deformation of the sheet and thus prevent detection distortion, a leveling roller 406 is installed, combined with... Figure 1 and Figure 4 As shown, two sets of flattening rollers 406 are symmetrically arranged on both sides of the transducer body 304. The outer surface of the flattening rollers 406 is in close contact with the upper surface of the metal sheet. During the conveying of the metal sheet, the friction between the flattening rollers 406 and the metal sheet will drive the two sets of flattening rollers 406 to rotate. Under the action of its own gravity, the flattening rollers 406 press the surface of the metal sheet, thereby keeping the metal sheet between the two sets of flattening rollers 406 flat, thus improving the accuracy of metal sheet detection. In addition, such as Figure 4 As shown, a spring sheet 405 is installed between two adjacent supports 403. When the metal sheet at the bottom of one of the flattening rollers 406 tilts upward, the tilted part presses against the corresponding flattening roller 406 in the direction of the mounting block 401. The flattening roller 406 drives the support 403 to rotate upward, stretching the spring sheet 405 through the support 403. At this time, under the elastic force of the spring sheet 405, the support 403 drives the flattening roller 406 to press the metal sheet in the opposite direction, thereby further increasing the pressing force of the flattening roller 406 on the metal sheet, thus further flattening and spreading the metal sheet. There are two flattening rollers 406, which are connected by two flattening rollers 405. The cooperation between the two sets of flattening rollers 406 and the spring sheet 405 further flattens the metal sheet conveyed to the bottom of the transducer body 304, improving the surface flatness of the metal sheet. When the flattened metal sheet moves to the bottom of the transducer body 304, the detection accuracy of the metal sheet can be improved again. Through the cooperation of the two sets of flattening rollers 406 and the spring sheet 405, the pressing pressure of the flattening rollers 406 can be adjusted according to the deformation range of the metal sheet, so that the extrusion pressure between the flattening rollers 406 and the metal sheet can be maintained within an appropriate range, avoiding excessive extrusion of the flattening rollers 406 and damage to the metal sheet, thereby improving the safety and stability of the thin plate acoustic impedance detection process.

[0024] It should also be noted that the automatic positioning component 3 also includes a mounting bracket 301. The top of the mounting bracket 301 is provided with a sliding groove 302. The outer surface of the slider 303 slides in relation to the inside of the sliding groove 302. A ball bearing 307 is movably embedded inside the contact 306. The ball bearing 307 rotates and contacts the upper surface of the metal sheet.

[0025] like Figures 1-3 As shown, the conveyor belt 1 is fixedly supported by the mounting frame 301. The mounting frame 301 is U-shaped and mounted on the upper side of the conveyor belt 1. The slide groove 302 limits the slider 303, which in turn limits the transducer body 304, ensuring that the transducer body 304 is always perpendicular to the top of the metal plate. Under the limiting action of the slider 303, the transducer body 304 can slide linearly along the inside of the slide groove 302, thereby enabling the transducer body 304 to move in the vertical direction. In addition, the ball bearing 307 makes rotational contact with the surface of the metal plate, which reduces the friction between the contact 306 and the metal plate. This not only reduces the impact of friction on the transport stability of the metal plate, but also reduces the damage to the surface of the metal plate caused by the contact 306.

[0026] It should also be noted that the leveling assembly 4 also includes two mounting blocks 401. The tops of the two mounting blocks 401 are fixedly connected to the inner top surface of the mounting frame 301. A rotating shaft 402 is movably embedded between the relative inner walls of the two mounting blocks 401. The outer surface of the rotating shaft 402 is fixedly connected to the inner wall of the bracket 403. The spring sheet 405 is arc-shaped. There are two sets of leveling rollers 406, which are symmetrically distributed on both sides of the transducer body 304.

[0027] like Figure 1 and Figures 4-5 As shown, the mounting bracket 301 provides fixed support for the mounting block 401, and the mounting block 401 provides support for the bracket 403. The mounting block 401 provides rotatable support for the bracket 403 through the rotating shaft 402, so that the bracket 403 can swing around the rotating shaft 402 as the fulcrum, thereby adjusting the position and height of the flattening roller 406. By setting the spring piece 405 between the two brackets 403 and making it arc-shaped, when the bracket 403 is subjected to compressive force and rotates with the rotating shaft 402, the arc-shaped concave contour reserves space for movement avoidance and reduces deformation resistance. When the metal sheet returns to flatness, its arc-shaped rebound can quickly open the bracket 403.

[0028] It should also be noted that the outer surface of the leveling roller 406 is provided with multiple mounting grooves 407, and the inner wall of the mounting groove 407 is provided with a spring 408, and one end of the spring 408 is fixed with an extrusion member 409.

[0029] like Figure 1 and Figures 4-6As shown, during the process of flattening the metal sheet by the flattening roller 406, in order to prevent small areas of unevenness on the surface of the metal sheet, when the outer surface of the flattening roller 406 rotates to the position of contact with the metal sheet, the extrusion member 409 located at that position is squeezed and retracts towards the inner wall of the mounting groove 407. This causes the corresponding spring 408 to be squeezed and shortened. The spring 408 then extends under its own elastic force, pushing the extrusion member 409 to move outward from the mounting groove 407, pressing the surface of the metal sheet again, thereby further ensuring the flatness of the metal sheet surface. At the same time, since the extrusion member 409 is subject to the elastic force of the spring 408, when the extrusion force between the extrusion member 409 and the metal sheet is too large, the extrusion member 409 will slide into the mounting groove 407 and squeeze the spring 408, thereby maintaining the extrusion force between the extrusion member 409 and the metal sheet within an appropriate range, thus avoiding damage to the sheet caused by excessive extrusion force between the extrusion member 409 and the sheet.

[0030] It should also be noted that the outer surface of the extrusion part 409 extends to the outside of the mounting groove 407, the outer surface of the extrusion part 409 is arc-shaped, and the number of extrusion parts 409 is several groups distributed in a ring array.

[0031] like Figure 1 and Figures 4-6 As shown, when the extruder 409 is not subjected to external extrusion, it is located outside the mounting groove 407. When it is extruded, it is pushed back into the mounting groove 407 by the extrusion force. In addition, by setting the surface of the extruder 409 to be arc-shaped, it is convenient for it to move smoothly inside and outside the mounting groove 407.

[0032] It should also be noted that a coating component 5 is provided on the top of the conveyor belt 1. The coating component 5 includes two fixing brackets 501, and the outer surfaces of the two fixing brackets 501 are fixedly connected to the support frame part in the conveyor belt 1.

[0033] like Figure 1 and Figures 7-8 As shown, the fixing frame 501 supports the components in the coating assembly 5, and the fixing frame 501 is fixed above the conveyor belt 1 near the two side edges.

[0034] It should also be noted that a collection chamber 502 is fixed between the outer surfaces of the two fixed frames 501, a scraper 503 is fixed between the relative inner walls of the collection chamber 502, and a recycling chamber 504 is provided inside the collection chamber 502.

[0035] like Figure 1 and Figures 7-8As shown, the outer surface of the scraper 503 is in contact with the outer surface of the storage cylinder 507, and is used to scrape off excess coupling agent from the surface of the storage cylinder 507. The recovery chamber 504 is connected to the scraper 503 and is used to collect the scraped coupling agent.

[0036] It should also be noted that the support frame part of the conveyor belt 1 has two fixed plates 505, and a connecting rod 506 is movably embedded between the relative inner walls of the two fixed plates 505.

[0037] like Figure 1 and Figures 7-8 As shown, the two fixed plates 505 support the connecting rod 506, and the conveyor belt 1 supports the fixed plates 505.

[0038] It should also be noted that a storage cylinder 507 is fixedly sleeved on the outer surface of the connecting rod 506. The outer surface of the storage cylinder 507 is in contact with the outer surface of the scraper 503. The storage cylinder 507 is hollow and filled with coupling agent. Multiple pressure nozzles 509 are provided on the outer surface of the storage cylinder 507.

[0039] like Figure 1 and Figures 7-8 As shown, the storage cylinder 507 is limited by the connecting rod 506. The outer surface of the storage cylinder 507 is in contact with the outer surface of the metal sheet. When the pressure nozzle 509 rotates to the position where it contacts the metal sheet, the coupling agent in the storage cylinder 507 flows to the lowest point under the action of gravity. At this time, the pressure nozzle 509 at the lowest point is squeezed and releases the coupling agent outward. The pressure nozzle 509 is connected to a sliding piston. When the pressure handle is squeezed, the piston moves the pressure plate downward, compressing the air-containing cavity in the housing and forming a positive pressure environment. This pressure change pushes the piston in the storage cylinder 507 towards the nozzle, directly squeezing the coupling agent and causing it to be discharged from the pressure nozzle 509. In addition, the coupling agent fills the gap between the transducer body 304 and the metal sheet through its own liquid properties, replacing the air as the medium for sound wave transmission, thereby significantly enhancing the signal strength.

[0040] It should also be noted that gears 508 are fixedly sleeved on the outer surface of the connecting rod 506 near both ends, and the gears 508 are meshed and connected to the chain 2 for transmission.

[0041] like Figures 1-3 and Figures 7-8As shown, after the coupling agent sprayed from the storage cylinder 507 is applied to the surface of the metal sheet, the conveyor belt 1 transports the metal sheet, causing the two chains 2 to rotate, which in turn drives the two corresponding gears 508 to rotate, thereby driving the connecting rod 506 to rotate, which in turn drives the storage cylinder 507 to rotate. When the excess coupling agent remaining on the surface of the storage cylinder 507 rotates to the position where it contacts the surface of the scraper 503, the excess coupling agent remaining on its surface is scraped off and flows along the inclined surface of the inner wall of the scraper 503 into the recovery chamber 504, thereby making the coupling agent application more uniform and further improving the accuracy of the detection.

[0042] The usage and working principle of this device: During the detection of acoustic impedance and thickness of a thin metal plate using the transducer body 304, the thin metal plate is first placed on the conveyor belt 1. The conveyor belt 1 is started, moving the thin metal plate forward and driving the two chains 2 to rotate along the conveyor belt 1. When the thin metal plate moves to the outer surface of one of the flattening rollers 406, the flattening roller 406 is driven to rotate under the action of friction, thereby flattening the surface of the thin metal plate. At the same time, through the action of multiple pressing parts 409, the locally protruding parts on the surface of the thin metal plate are pressed again, thereby ensuring... Its surface flatness; in addition, when the metal plate surface warps, the spring sheet 405 further strengthens the pressing strength of the flattening roller 406 on the surface of the metal plate, thereby further ensuring that the surface of the metal plate is flat when it moves to the position of the transducer body 304. After the metal plate moves out of its corresponding flattening roller 406, it is conveyed to the outer surface of the storage cylinder 507. At this time, the two gears 508 rotate under the driving action of the two chains 2, thereby driving the two connecting rods 506 to rotate, thereby driving the storage cylinder 507 to rotate, and the material in the storage cylinder 507 is then transported to the outer surface of the storage cylinder 507. When the outer surface of the pressure nozzle 509 rotates to a position contacting the outer surface of the metal sheet, it is squeezed, thereby outputting the coupling agent stored in the storage cylinder 507. Under the rolling action of the storage cylinder 507, the coupling agent is evenly coated on the top of the metal sheet. When the storage cylinder 507 rotates to a position contacting the scraper plate 503, the scraper plate 503 scrapes off the excess coupling agent retained on its surface and conveys it along the inner wall of the scraper plate 503 to the recovery chamber 504 for collection. Subsequently, the metal sheet continues to be conveyed forward to the bottom of the transducer body 304. During operation, the two contacts 306 ensure that the vertical distance between the transducer body 304 and the top of the metal plate remains within a specified range. When the metal plate bulges, the two contacts 306 are subjected to upward pressure, which drives the two connecting rods 305 to move upward, thereby driving the transducer body 304 to move upward along the inner wall of the slide groove 302. When the metal plate dents, the two contacts 306 move downward under their own gravity, driving the transducer body 304 to move downward, thus ensuring that the transducer body 304 always maintains a certain distance from the top of the metal plate.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A synchronous online intelligent detection device for acoustic impedance thickness of sound-absorbing composite material, comprising a conveyor belt (1), wherein chains (2) are fixed to both sides of the surface of the conveyor belt (1), characterized in that: The top of the conveyor belt (1) is provided with an automatic positioning component (3) and a slider (303). The automatic positioning component (3) includes a transducer body (304) for measuring the acoustic impedance and thickness of the sound-absorbing composite material. Both sides of the transducer body (304) are fixed with connecting rods (305), and the bottom of the connecting rods (305) is fixedly connected with contacts (306). The leveling assembly (4) includes four supports (403), with a spring piece (405) provided between the outer surfaces of each pair of adjacent supports (403), and a limiting shaft (404) fixedly embedded between the inner walls of each pair of opposite supports (403). The outer surfaces of the two limiting shafts (404) are movably fitted with leveling rollers (406). The automatic positioning component (3) also includes a mounting bracket (301), the top of which is provided with a sliding groove (302), the outer surface of the slider (303) slides against the inside of the sliding groove (302), and a ball (307) is movably embedded inside the contact (306), the ball (307) rotatingly contacts the upper surface of the metal sheet. The leveling assembly (4) also includes two mounting blocks (401), the tops of the two mounting blocks (401) are fixedly connected to the inner top surface of the mounting frame (301), and a rotating shaft (402) is movably embedded between the relative inner walls of the two mounting blocks (401). The outer surface of the rotating shaft (402) is fixedly connected to the inner wall of the bracket (403). The spring sheet (405) is arc-shaped, and the number of leveling rollers (406) is two sets and symmetrically distributed on both sides of the transducer body (304).

2. The sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device according to claim 1, characterized in that: The outer surface of the paving roller (406) is provided with a plurality of mounting grooves (407), and the inner wall of the mounting groove (407) is provided with a spring (408), and one end of the spring (408) is fixed with an extrusion member (409).

3. The sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device according to claim 2, characterized in that: The outer surface of the extruder (409) extends through to the outside of the mounting groove (407). The outer surface of the extruder (409) is arc-shaped. The number of extruders (409) is several groups and they are distributed in a ring array.

4. The sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device according to claim 3, characterized in that: The top of the conveyor belt (1) is also provided with an application component (5), which includes two fixing frames (501), the outer surfaces of which are fixedly connected to the support frame portion in the conveyor belt (1).

5. The sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device according to claim 4, characterized in that: A collection chamber (502) is fixed between the outer surfaces of the two fixed frames (501), a scraper (503) is fixed between the opposite inner walls of the collection chamber (502), and a recycling chamber (504) is provided inside the collection chamber (502).

6. The sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device according to claim 5, characterized in that: The support frame portion of the conveyor belt (1) is fixed with two fixing plates (505), and a connecting rod (506) is movably embedded between the relative inner walls of the two fixing plates (505).

7. The sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device according to claim 6, characterized in that: The outer surface of the connecting rod (506) is fixedly fitted with a storage cylinder (507). The outer surface of the storage cylinder (507) is in contact with the outer surface of the scraper (503). The storage cylinder (507) is hollow and filled with coupling agent. Multiple pressure nozzles (509) are provided on the outer surface of the storage cylinder (507).

8. The sound-absorbing composite material acoustic impedance thickness synchronous online intelligent detection device according to claim 7, characterized in that: Gears (508) are fixedly fitted on the outer surface of the connecting rod (506) near both ends, and the gears (508) are meshed and connected to the chain (2).

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