An airbag shell light-cured film thickness detection device

Abstract

The application relates to the technical field of solidified film detection, and discloses an air bag shell light solidified film thickness detection device, which comprises an optical microscope, the inside of the optical microscope is provided with an operation table, the operation table is provided with a bearing plane for placing a solidified film; a clamping mechanism is installed at the top of the operation table, the two pressing strips are mutually adhered, then a three-edge sealed semi-closed cavity is formed together with two transparent plates, the top opening does not affect detection, the pressing strips are continuously pushed and are elastically extruded and retracted by the elastic piece, the cavity sealing mode can be maintained, the clamping force can be self-adaptively adjusted according to the thickness of the solidified film, the transparent plates can be kept closely adhered, different thickness film bodies can be adapted, meanwhile, the first clamping plate drives the square plate to slide in the square box to generate negative pressure, the interlayer gap of the film layer is sucked through the circular pipe, the flow guide groove formed after the two pressing strips are adhered is matched, air bubbles are directionally discharged along the flow guide groove, the air bubbles are prevented from remaining in the observation area, and the detection precision and the equipment universality are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of cured film detection technology, specifically to a device for detecting the thickness of a photocurable film on an airbag shell. Background Technology

[0002] During the manufacturing process of airbag shells, their surfaces are typically coated with a photocurable film. The uniformity of this film thickness directly affects the airbag's sealing performance and burst safety. Therefore, after the curing process is completed, the thickness of the film cross-section needs to be measured to assess process stability and ensure product quality. Currently, optical microscopes are commonly used equipment for measuring the thickness of photocurable films. The typical testing method involves cutting the cured film into a sample, placing it on the microscope stage, fixing the sample on both sides using a clamping mechanism, and then adjusting the microscope's focal length to observe the cross-section.

[0003] In existing technologies, clamping mechanisms for measuring the thickness of cured films are mostly rigid pressing structures, using a fixed pressure plate and a movable pressure plate to press the film together. However, during the curing and shearing process, tiny air bubbles or voids often remain between the layers or at the edges of the cross-section of the cured film. These air bubbles can form shadows or virtual images under a microscope, seriously interfering with the inspector's ability to clearly identify the film layer boundaries, leading to deviations in the thickness measurement results. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a device for detecting the thickness of a photocurable film on an airbag shell. This device offers the advantages of accurate detection and the absence of residual air bubbles between the cured film layers, thus solving the problem of shadows caused by tiny air bubbles between the cured film layers during the detection process.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A device for detecting the thickness of a photocurable film on an airbag shell, comprising: An optical microscope, which has an operating stage inside, the operating stage having a supporting surface for placing a cured film; A clamping mechanism, which is mounted on the top of the operating table, has at least a drive assembly for driving the clamping of the cured film, a sealing assembly for forming a three-sided seal for the cured film, and a spring for adaptively adjusting the sealing range of the sealing assembly. A suction mechanism is mounted on the side of a clamping mechanism, the suction mechanism having at least a displacement component for generating negative pressure and a circular tube for guiding the flow of negative pressure. The control drive component clamps and positions the sheared cured film, and the moving drive component drives the sealing component to approach and form a three-sided sealed, top-open sealed space. During the formation of the sealed space, the film is subjected to elastic compression by the spring sheet to adaptively clamp the cured film. At the same time, when the drive component moves, it can cause the displacement component to generate negative pressure, which enters the sealed space through the round tube and sucks up the tiny gaps between the cured film layers.

[0006] The system also includes an adjustment mechanism installed inside the sealing assembly. The adjustment mechanism includes two horizontal bars, each with multiple semi-circular holes at its top. When the two horizontal bars are joined together, they form multiple micro-holes. During negative pressure suction, the negative pressure can be drawn through the micro-holes to extract the voids in the cured film. Furthermore, the support of the horizontal bars ensures that the cross-section of the cured film is vertically upward and facing the lens of the optical microscope.

[0007] It also includes a cleaning mechanism installed above the displacement assembly, which includes a bend and an exhaust component. One end of the bend is connected to the side wall of the exhaust component, and one side of the inner wall of the exhaust component has a downward sloping surface structure. When the displacement assembly is in operation, the exhaust airflow will pass through the bend and exhaust component to be discharged outward, cleaning the surface of the cured film.

[0008] The drive assembly includes a support platform, a first clamping plate slidably disposed on the inner wall of the support platform, and a second clamping plate fixed to the top of the support platform. One end of the first clamping plate is respectively in contact with an electric telescopic rod. The fixed end of the electric telescopic rod is fixed to the side wall of the support platform. The two ends of the first clamping plate away from the compression spring are respectively fixed with a horizontal plate. One end of the horizontal plate passes through and extends to the outside of the support platform. Two compression springs are respectively fixed to one side of the inner wall of the support platform. The other end of the compression spring is fixed to the side wall of the first clamping plate.

[0009] The sealing assembly includes two transparent plates, with the sidewall of each transparent plate contacting the sidewall of the first clamping plate and the sidewall of the second clamping plate respectively. There are six spring pieces, which are in an arc shape. Three spring pieces are arranged in a group, and each group of spring pieces is fixed to the inner wall of the first clamping plate and the second clamping plate respectively. The sidewall of each group of spring pieces is connected to a pressure strip consisting of a horizontal pressure strip and two vertical pressure strips. By the mutual approach of the two pressure strips, a semi-closed cavity with three-sided sealing is formed.

[0010] The displacement assembly includes two plates, one end of each plate is fixed to the side wall of a first clamping plate, and a square plate is fixed to one end of each plate. A square box slides on the outer wall of the square plate. One side of the inner wall of the square box is connected to the side wall of a transparent plate through four round tubes. One side of the outer wall of the square box is fixed to the side wall of a second clamping plate. When the square plate slides inside the square box, it can generate negative pressure airflow and enter the round tubes.

[0011] The adjustment mechanism also includes a miniature shell. A slot is provided on one side of the pressure strip to guide the flow trajectory of negative pressure. The bottom of the slot is fixed to the bottom of the miniature shell. A pressure relief pipe is connected to one side of the miniature shell. There are two pressure relief pipes. One end of each pressure relief pipe extends into the interior of the first clamping plate and the second clamping plate, respectively, to guide the internal pressure of the first clamping plate and the second clamping plate into the interior of the miniature shell.

[0012] The inner wall of the microshell has a sliding frame. The bottom of the frame is a strip-shaped structure that slides on the inner wall of the microshell. The top of the frame is a vertical strip that extends through the outside of the microshell. The top of the frame is fixed to the bottom of the horizontal strip and is used to push and adjust the bottom of the cured film so that the cross-section of the cured film can face vertically upwards and directly towards the lens of the optical microscope.

[0013] Two strip-shaped shells are fixed at the top two ends of the slot, and the strip-shaped shells are hollowed out at the bottom. Several round holes are opened on one side of the strip-shaped shells to guide negative pressure to draw in the gaps near the side wall of the cured film.

[0014] One end of the bent pipe is connected to the top of the inner wall of the square box, and one end of the exhaust component is fixed to the top of the square box to control and position the exhaust direction of the airflow.

[0015] III. Beneficial Effects Compared with the prior art, the present invention provides a device for detecting the thickness of a photocurable film on an airbag shell, which has the following advantages: 1. This airbag shell photocurable film thickness detection device uses two pressure strips that are bonded together and then form a semi-closed cavity with three sides sealed by two transparent plates. The top opening does not affect the detection. When the pressure strips continue to advance, they are elastically squeezed and retracted by the spring sheet, which can maintain the sealed shape of the cavity and adaptively adjust the clamping force according to the thickness of the cured film, so that the transparent plates are kept in close contact and can adapt to films of different thicknesses. At the same time, the first clamping plate drives the square plate to slide in the square box to generate negative pressure, which is drawn through the round tube to the gap between the film layers. With the help of the guide groove formed after the two pressure strips are bonded, the air bubbles are directed out along the guide groove to avoid remaining in the observation area, effectively improving the detection accuracy and equipment versatility.

[0016] 2. In the airbag shell photocurable film thickness detection device, during the suction process, the airflow enters the micro shell through the pressure relief pipe, pushing the frame and crossbars to rise vertically. During the upward movement of the two attached crossbars, the inclined curing film cross-section is squeezed and adjusted to make it in a flat state, avoiding the detection surface being oblique and causing the thickness measurement to be too large, thus ensuring the accuracy of the thickness detection.

[0017] 3. The device for detecting the thickness of the photocurable film on the airbag shell, while clamping and extracting the cured film, allows the square plate to slide inside the square box. The airflow in the rodless area enters the exhaust component through the bend pipe, and is guided by its inclined bottom surface to blow air through the cross-section of the cured film to remove any remaining impurities, thus avoiding interference with the detection effect of the optical microscope and ensuring image clarity. Attached Figure Description

[0018] Figure 1 This is a top view schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the side structure of the support platform in this invention.

[0020] Figure 3 This is a schematic cross-sectional view of the square box structure in this invention.

[0021] Figure 4 This is a top view of the first clamping plate structure in this invention.

[0022] Figure 5 This is a schematic diagram of the side structure of the second clamping plate in this invention.

[0023] Figure 6 This is a top view schematic diagram of the plate structure in this invention.

[0024] Figure 7 This is a schematic diagram of the exploded structure of the transparent plate in this invention.

[0025] Figure 8 This is a bottom view of the strip-shaped shell structure in this invention.

[0026] Figure 9 For the present invention Figure 8 A magnified view of A in the middle.

[0027] In the diagram: 100, optical microscope; 200, operating table; 300, clamping mechanism; 310. Drive assembly; 311. Support platform; 312. Electric telescopic rod; 313. First clamping plate; 314. Second clamping plate; 315. Horizontal plate; 316. Compression spring; 320. Sealing assembly; 321. Transparent plate; 322. Pressure strip; 330. Spring clip; 600. Suction mechanism; 610. Displacement assembly; 611. Square box; 612. Plate; 613. Square plate; 620. Round tube; 400. Adjustment mechanism; 401. Strip shell; 402. Miniature shell; 403. Frame; 404. Horizontal bar; 405. Pressure relief pipe; 500. Cleaning mechanism; 501. Bend; 502. Exhaust component. Detailed Implementation

[0028] 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.

[0029] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] This embodiment provides a device for detecting the thickness of a photocurable film on an airbag shell, including: Please see Figure 1-9 This embodiment provides a device for detecting the thickness of a photocurable film on an airbag shell, comprising: An optical microscope 100 has an operating stage 200 inside. The operating stage 200 is fixedly installed at the stage position of the optical microscope 100 by bolts and is used to provide a bearing surface for the sample to be tested.

[0033] The clamping mechanism 300, mounted on the top of the operating table 200, is used to position and clamp the cured film to be tested. It includes a drive assembly 310, a sealing assembly 320, and a spring sheet 330. The drive assembly 310 includes a support platform 311, which is a rectangular frame structure. Its bottom is fixedly connected to the upper surface of the operating table 200 by bolts. A first clamping plate 313 is slidably disposed on one side of the inner wall of the support platform 311. A second clamping plate 314 is fixedly disposed on the top of the support platform 311 away from the top of the first clamping plate 313. The second clamping plate 314 is fixedly connected to the support platform 311 by welding. The first clamping plate 313 and the second clamping plate 314 are disposed opposite to each other, forming a clamping space for accommodating the cured film.

[0034] like Figure 2 As shown, one end of the first clamping plate 313 is in contact with an electric telescopic rod 312. The fixed end of the electric telescopic rod 312 is fixed to the side wall of the support platform 311 by bolts, and its telescopic end abuts against the outer wall of the first clamping plate 313 to provide a controllable clamping driving force and control the tight clamping of the cured film between the first clamping plate 313 and the second clamping plate 314.

[0035] Two compression springs 316 are fixed to one side of the inner wall of the support platform 311. One end of the compression spring 316 is welded and fixed to the inner wall of the support platform 311, and the other end is welded and fixed to the side wall of the first clamping plate 313. They are used to provide a constant elastic thrust. Through the elastic compression of the compression spring 316 itself, the curing film located between the two transparent plates 321 can be initially clamped and positioned when the electric telescopic rod 312 is not activated.

[0036] A horizontal plate 315 is fixed to each end of the side of the first clamping plate 313 away from the compression spring 316. The horizontal plate 315 is a long strip plate with one end welded to the side wall of the first clamping plate 313 and the other end penetrating and extending to the outside of the support platform 311. It is used for the operator to manually push the horizontal plate 315 to move the first clamping plate 313 closer to the second clamping plate 314.

[0037] The sealing assembly 320 includes a transparent plate 321. The sidewalls of the transparent plate 321 contact one side of the first clamping plate 313 and the second clamping plate 314 respectively. The transparent plate 321 is a rectangular transparent glass plate that is attached to the sidewall surfaces of the corresponding first clamping plate 313 and the second clamping plate 314. It is used to clamp the curing film from both sides and provide a light transmission detection window. The first clamping plate 313 and the second clamping plate 314 are both hollow rectangular frame structures. Three spring pieces 330 are installed on their inner walls, which are equidistant from each other along their length. The spring piece 330 is a thin strip of stainless steel metal with a slight upward arch in the middle, forming an arc shape. The three spring pieces 330 are arranged in a group. One end of each group of spring pieces 330 is welded and fixed to the inner wall of the corresponding first clamping plate 313 and the second clamping plate 314. The sidewalls of each group of spring pieces 330 are in contact with a pressure strip 322. The pressure strip 322 consists of one horizontal pressure strip and two vertical pressure strips. The three pressure strips are connected end to end to form a "U" shaped frame structure.

[0038] A suction mechanism 600, mounted on the side of the clamping mechanism 300, includes a displacement component 610 and a circular tube 620. The displacement component 610 includes two plates 612, one end of which is welded and fixed to one side of the first clamping plate 313. Each plate 612 is a long strip of metal plate, one end of which is fixed to the side wall of the first clamping plate 313, and the other end extends outward in a horizontal direction. A square plate 613 is fixed to the end of each plate 612. The square plate 613 is a rectangular plate structure and is welded and fixed perpendicularly to the plate 612. A square box 611 is slidably disposed on the outer wall of the square plate 613. The square box 611 is a hollow rectangular box structure, and one side of the square box 611 is welded and fixed. Fixed to the side wall of the second clamping plate 314, the square plate 613 is slidably disposed inside the square box 611, dividing the inner cavity of the square box 611 into a rod-type area (the side near the second clamping plate 314) and a rodless area (the side away from the second clamping plate 314). One side of the inner wall of the square box 611 is connected to the side wall of the transparent plate 321 near the first clamping plate 313 by four round tubes 620. One end of the round tube 620 is inserted and fixed to the side wall of the square box 611 and communicates with its interior, and the other end is inserted and fixed to the side wall of the transparent plate 321 and extends to the inner surface of the transparent plate 321, which is used to guide the gas in the rod-type area of ​​the square box 611 to the clamping area between the two transparent plates 321.

[0039] Furthermore, existing methods either completely seal the two transparent plates and create a vacuum, but the sealing strips and sealing frame block the light path of the lens above, obscuring the cross-sectional image and making it difficult to see the film layer boundary; or they use mechanical clamping without negative pressure, where the transparent plates are simply clamped, and tiny air gaps can easily get trapped between the plates and the sample, resulting in ghosting and causing the thickness to be inflated when the computer measures the film, resulting in poor accuracy.

[0040] like Figure 8-9 As shown, it also includes an adjustment mechanism 400, which is installed inside the pressure strip 322 and is used to finely adjust the cross-sectional angle of the cured film during the clamping process. The adjustment mechanism 400 includes a miniature shell 402, which is a hollow rectangular shell and is fixedly installed inside the transverse pressure strip of the pressure strip 322. A slot is opened on one side of the pressure strip 322, which extends along the length of the pressure strip 322. The slot formed after the two pressure strips 322 are attached is used to guide the flow trajectory of negative pressure. The bottom of the slot is fixed to the bottom of the miniature shell 402 by bonding. Two pressure relief pipes 405 are connected to one side of the miniature shell 402. One end of each pressure relief pipe 405 extends to the internal cavity of the first clamping plate 313 and the second clamping plate 314, respectively. When the internal pressure of the first clamping plate 313 or the second clamping plate 314 is too high, the internal air pressure is introduced into the interior of the miniature shell 402 through the pressure relief pipe 405 to play a pressure relief protection role.

[0041] like Figure 4-8As shown, two strip shells 401 are fixed at the top two ends of the slot. The strip shell 401 is hollowed out at the bottom. Several round holes are opened on one side of the strip shell 401. The round holes are arranged at equal intervals along the length of the strip shell 401 to guide the negative pressure to be drawn into the gap near the side wall of the curing film, so that the negative pressure effect is more concentrated and effective.

[0042] like Figure 9 As shown, a frame 403 is slidably disposed on the inner wall of the micro shell 402. The bottom of the frame 403 is a strip-shaped structure and is slidably disposed on the inner wall of the micro shell 402. The top of the frame 403 is a vertical strip that runs through the top of the micro shell 402 and extends to the outside. A horizontal bar 404 is fixed to the top of the frame 403. The horizontal bar 404 is a long strip-shaped plate that is vertically fixed to the frame 403. The top surface of the horizontal bar 404 is used to support the bottom edge of the curing film.

[0043] Furthermore, by sliding the frame 403 within the micro shell 402, the crossbar 404 is driven to move up and down, thereby adjusting the bottom of the cured film so that the cross section of the cured film can be vertically upward and directly facing the lens of the optical microscope 100.

[0044] like Figure 4 As shown, the top of the horizontal bar 404 has multiple semi-circular holes. When the two horizontal bars 404 come together during the clamping process, the semi-circular holes on the two horizontal bars 404 face each other and form multiple complete micro-holes. When used for negative pressure suction, the negative pressure can be precisely extracted from the tiny gaps between the cured film layers through the guiding effect of these micro-holes.

[0045] like Figure 3 As shown, it also includes a cleaning mechanism 500, which is installed on the top of the square box 611 and is used to clean the detection section of the cured film by blowing air during the clamping process. The cleaning mechanism 500 includes a bent pipe 501, one end of which is connected to the top of the inner wall of the square box 611, and the other end is connected to an exhaust component 502. The bottom of the exhaust component 502 is fixed to the top of the transparent plate 321 near the side of the first clamping plate 313. The exhaust component 502 is a hollow shell with one side of its inner wall having a downward sloping surface structure. The air outlet of the exhaust component 502 faces the top opening of the clamping area between the two transparent plates 321.

[0046] Furthermore, when the square plate 613 slides inside the square box 611, the airflow compressed and discharged from the rodless area will be discharged outward through the bend pipe 501 and the exhaust device 502. The inclined air outlet direction allows the airflow to blow obliquely towards the detection section of the cured film, cleaning the detection surface of the cured film and preventing impurities from adhering and affecting the detection accuracy.

[0047] Working principle: Placement stage: The cured film on the surface of the airbag shell is cut into a square. Then, the horizontal plate 315 is pushed to drive the first clamping plate 313 to slide on the inner wall of the support platform 311. The cut cured film is placed between two far apart transparent plates 321. The horizontal plate 315 is released and subjected to the elastic compression of the compression spring 316. The first clamping plate 313 drives the transparent plate 321 and the cured film to move closer to the second clamping plate 314 and the transparent plate 321 at the other end. The two transparent plates 321 move closer to each other, thereby initially clamping the cured film.

[0048] Clamping stage: The electric telescopic rod 312 is extended and gradually squeezes the first clamping plate 313. The first clamping plate 313 drives the transparent plate 321 and the cured film to gradually approach the transparent plate 321 at the other end. While clamping the cured film, the gaps inside the cured film layer are gradually squeezed out, making it easier for the optical microscope 100 to detect the cross-section of the cured film. The cross-section is magnified by the optical microscope 100 and displayed on the computer. The thickness of the cured film is then detected by measuring the thickness on the computer.

[0049] Suction Phase: When the first clamping plate 313 and the second clamping plate 314 approach each other, the first clamping plate 313 moves the pressure strip 322 and the transparent plate 321 on it toward the second clamping plate 314 until the two pressure strips 322 are in contact with each other. Together with the two transparent plates 321, they form a semi-closed cavity with three sides sealed around the curing film clamping area. The top opening design will not interfere with the normal detection of the optical microscope 100. After the two pressure strips 322 are in contact, they continue to move forward. The two pressure strips 322 gradually retract toward the inside of the first clamping plate 313 and the second clamping plate 314. At this time, under the elastic compression of the spring sheet 330, the shape of the semi-closed cavity can be maintained, and the clamping force can be adaptively adjusted according to the thickness of the curing film, so that the transparent plate 321 always maintains a tight fit with both sides of the curing film. Meanwhile, the first clamping plate 313 drives the square plate 613 to slide within the square box 611 via the plate body 612. A negative pressure is generated in the rod-side area of ​​the square box 611, which is transmitted through the circular tube 620 to the semi-enclosed cavity, drawing out the gaps between the cured film layers and thus improving the detection accuracy of the optical microscope 100. Furthermore, after the two pressure strips 322 are attached, a guide groove is formed on the side wall of the cured film. The connecting port of the circular tube 620 is close to this guide groove, allowing tiny air bubbles to be quickly discharged along it, preventing them from remaining in the film observation area.

[0050] Supplementary stage: When suction is performed, since the two sides of the cured film are located at the guide groove, the top opening of the guide groove can be sealed by the strip shell 401 to prevent negative pressure from being discharged outward through the opening. The negative pressure will enter the interior of the strip shell 401 and be extracted from the gaps on both sides of the cured film through multiple round holes on its side, which improves the stability of negative pressure extraction.

[0051] Adjustment stage: When the pressure strip 322 moves into the first clamping plate 313 and the second clamping plate 314 respectively, in order to prevent the pressure inside the first clamping plate 313 and the second clamping plate 314 from being too high, the airflow will enter the interior of the micro shell 402 through the pressure relief pipe 405. The airflow pushes the frame 403 inside the micro shell 402, causing the frame 403 to drive the horizontal bar 404 to rise vertically along the inner wall of the micro shell 402. Since the horizontal bar 404 is planar and the cured film is square, the two attached horizontal bars 404 can adjust and squeeze the inclined cured film during the vertical upward movement, so that its cross section is planar, which is convenient for the subsequent optical microscope 100 to detect it, and avoids the thickness measurement being too large when the detection surface of the cured film is oblique.

[0052] Cleaning stage: When the square plate 613 slides inside the square box 611, the airflow inside the rodless area of ​​the square box 611 enters the interior of the exhaust component 502 through the bend 501, and the bottom of the inner wall of the exhaust component 502 is inclined downward. During the exhaust process, the airflow can spray the detection area of ​​the solidified film cross section to prevent impurities from remaining and affecting the detection effect of the optical microscope 100.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the thickness of a photocurable film on an airbag shell, characterized in that, include: An optical microscope (100) has an operating stage (200) inside, the operating stage (200) having a support plane for placing a cured film; A clamping mechanism (300) is mounted on the top of the operating table (200). The clamping mechanism (300) has at least a drive assembly (310) for driving the clamping of the cured film, a sealing assembly (320) for forming a three-sided seal for the cured film, and a spring (330) for adaptively adjusting the sealing range of the sealing assembly (320). A suction mechanism (600) is mounted on the side of a clamping mechanism (300), the suction mechanism (600) having at least a displacement assembly (610) for generating negative pressure and a circular tube (620) for guiding the flow of negative pressure. The control drive assembly (310) clamps and positions the sheared cured film, and the moving drive assembly (310) drives the sealing assembly (320) to approach and form a three-sided sealed, unsealed sealing space. During the formation of the sealing space, it is subjected to elastic compression by the spring sheet (330) to adaptively clamp the cured film. At the same time, when the drive assembly (310) moves, it can cause the displacement assembly (610) to generate negative pressure, which enters the sealing space through the round tube (620) and sucks out the tiny gaps between the cured film layers.

2. The airbag shell photocurable film thickness detection device according to claim 1, characterized in that, It also includes an adjustment mechanism (400) installed inside the sealing assembly (320). The adjustment mechanism (400) includes two crossbars (404). The top of each crossbar (404) has multiple semi-circular holes. When the two crossbars (404) are attached together, they form multiple micro-holes. When negative pressure suction is applied, the negative pressure can be drawn through the micro-holes to extract the voids in the cured film. The crossbars (404) support the cured film so that the cross section is vertically facing upwards and directly facing the lens of the optical microscope (100).

3. The airbag shell photocurable film thickness detection device according to claim 2, characterized in that, It also includes a cleaning mechanism (500) installed above the displacement assembly (610), which includes a bend (501) and an exhaust component (502). One end of the bend (501) is connected to the side wall of the exhaust component (502). One side of the inner wall of the exhaust component (502) has a downward inclined surface structure. When the displacement assembly (610) is in operation, the exhaust air will pass through the bend (501) and the exhaust component (502) to be discharged outward, cleaning the surface of the cured film.

4. The airbag shell photocurable film thickness detection device according to claim 3, characterized in that, The drive assembly (310) includes a support platform (311), a first clamping plate (313) slidably disposed on the inner wall of the support platform (311), and a second clamping plate (314) fixed to the top of the support platform (311). One end of the first clamping plate (313) is respectively in contact with an electric telescopic rod (312). The fixed end of the electric telescopic rod (312) is fixed to the side wall of the support platform (311). One end of the first clamping plate (313) away from the compression spring (316) is respectively fixed with a horizontal plate (315). One end of the horizontal plate (315) penetrates through and extends to the outside of the support platform (311). Two compression springs (316) are respectively fixed on one side of the inner wall of the support platform (311). The other end of the compression spring (316) is fixed to the side wall of the first clamping plate (313).

5. The airbag shell photocurable film thickness detection device according to claim 4, characterized in that, The sealing assembly (320) includes two transparent plates (321), the sidewalls of each transparent plate (321) respectively contact the sidewalls of the first clamping plate (313) and the second clamping plate (314), the number of spring pieces (330) is six, the whole is in an arc shape, the three spring pieces (330) are arranged in a group, each group of spring pieces (330) is fixed to the inner wall of the first clamping plate (313) and the second clamping plate (314), and the sidewalls of each group of spring pieces (330) are connected to a pressure strip (322) composed of a horizontal pressure strip and two vertical pressure strips. By the mutual approach of the two pressure strips (322), a semi-closed cavity with three-sided sealing is formed.

6. The airbag shell photocurable film thickness detection device according to claim 5, characterized in that, The displacement component (610) includes two plates (612), one end of each plate (612) is fixed to the side wall of the first clamping plate (313), and a square plate (613) is fixed to one end of each plate (612). A square box (611) slides on the outer wall of the square plate (613). One side of the inner wall of the square box (611) is connected to the side wall of a transparent plate (321) through four round tubes (620). One side of the outer wall of the square box (611) is fixed to the side wall of the second clamping plate (314). When the square plate (613) slides inside the square box (611), it can generate negative pressure airflow and enter the round tube (620).

7. The airbag shell photocurable film thickness detection device according to claim 5, characterized in that, The adjustment mechanism (400) also includes a miniature shell (402). A slot is provided on one side of the pressure strip (322) for guiding the flow trajectory of negative pressure. The bottom of the slot is fixed to the bottom of the miniature shell (402). A pressure relief pipe (405) is connected to one side of the miniature shell (402). There are two pressure relief pipes (405). One end of each pressure relief pipe (405) extends into the interior of the first clamping plate (313) and the second clamping plate (314) respectively, for guiding the internal pressure of the first clamping plate (313) and the second clamping plate (314) into the interior of the miniature shell (402).

8. The airbag shell photocurable film thickness detection device according to claim 7, characterized in that, The inner wall of the microshell (402) has a sliding frame (403). The bottom of the frame (403) is a strip structure that slides on the inner wall of the microshell (402). The top of the frame (403) is a vertical strip that extends through the outside of the microshell (402). The top of the frame (403) is fixed to the bottom of the horizontal strip (404) for pushing and adjusting the bottom of the cured film so that the cross section of the cured film can be vertically upward and face the lens of the optical microscope (100).

9. The airbag shell photocurable film thickness detection device according to claim 8, characterized in that, Two strip shells (401) are fixed at the top two ends of the slot, and the strip shells (401) are hollowed out at the bottom. Several round holes are opened on one side of the strip shells (401) to guide negative pressure to the side wall near the curing film to draw out the gap.

10. The airbag shell photocurable film thickness detection device according to claim 6, characterized in that, One end of the bend (501) is connected to the top of the inner wall of the square box (611), and one end of the exhaust component (502) is fixed to the top of the square box (611) to control and position the exhaust direction of the airflow.

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