Air bag detection tool

Abstract

The utility model relates to an air bag detection tool. The air bag detection tool comprises a mounting plate; the liquid storage box is of a cubic structure with a top opening and a liquid storage space inside; the liquid level sensor is mounted on the side wall of the liquid storage box so as to detect the liquid level change in the liquid storage box; one side of the gravity sensor is connected with the bottom of the liquid storage box and the other side is connected with the mounting plate; the lifting air cylinder comprises a cylinder barrel and a first piston rod, and the cylinder barrel is mounted on the mounting plate; the clamping assembly is located above the opening in the top of the liquid storage box, is used for clamping an air bag to be detected and is connected with the first piston rod, and the first piston rod drives the clamping assembly to move; the industrial personal computer is connected with the liquid level sensor, the gravity sensor, the lifting air cylinder and the clamping assembly. The size of a part can be adjusted according to the specification of the air bag to be measured, so that the measurement process is simple, and the technical problems of low air bag measurement efficiency and tedious operation in the prior art are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of workpiece inspection equipment, and in particular relates to an airbag inspection fixture. Background Technology

[0002] To ensure the proper functioning of a shock absorber, it is crucial to test the airtightness and volume of the airbag when installing a sealed elastic airbag.

[0003] Currently, the volume of elastic airbags is typically measured manually using electronic scales and computing devices. Different tooling is used to test the airtightness of elastic airbags depending on their specifications.

[0004] In the existing measurement process, manual measurement and changing different tooling can lead to low efficiency and cumbersome operation in airbag measurement. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an airbag testing fixture that takes into account both the volume and airtightness of the airbag. The fixture has an integrally molded structure and the dimensions of the parts can be adjusted according to the airbag specifications, making the measurement process simple. This solves the technical problems of low airbag measurement efficiency and cumbersome operation in the prior art.

[0006] This utility model provides an airbag detection fixture, comprising:

[0007] Mounting plate;

[0008] The liquid storage box is a cubic structure with an opening at the top and an internal liquid storage space.

[0009] The liquid level sensor is installed on the side wall of the liquid storage box;

[0010] The gravity sensor is connected to the bottom of the liquid storage box on one side and to the mounting plate on the other side.

[0011] The lifting cylinder includes a cylinder barrel and a first piston rod, with the cylinder barrel mounted on a mounting plate;

[0012] A clamping assembly is located above the top opening of the liquid storage box and is connected to the first piston rod for clamping the airbag to be tested.

[0013] The industrial computer connects to the liquid level sensor, gravity sensor, lifting cylinder, and clamping assembly.

[0014] In some embodiments, the clamping assembly includes:

[0015] The clamping cylinder includes a cylinder body and grippers. A first piston rod is connected to the outside of the cylinder body. A second piston rod is installed inside the cylinder body. The grippers include two opposing clamping plates located at the end of the cylinder body near the liquid storage box and axially connected to the second piston rod for clamping the airbag to be tested.

[0016] In some embodiments, the side of any clamp that contacts the airbag to be tested has an uneven texture.

[0017] In some embodiments, the clamping assembly further includes:

[0018] The limiting block is connected to the side of the clamp plate that contacts the airbag to be tested. The limiting blocks on the two clamp plates are set opposite to each other. When the clamps are closed, the limiting blocks set opposite to each other abut against each other.

[0019] In some embodiments, the clamping assembly further includes:

[0020] The first connector is fixedly connected to one end of the cylinder body near the liquid storage box;

[0021] The guide rod includes a straight section and a limiting part. The straight section passes through the first connector, and the limiting part is a spherical protrusion located at both ends of the straight section.

[0022] The pressure plate connects to the airbag to be tested and includes a first contact plate and a second contact plate. The first contact plate is located between the first connector and the limiting part, and a straight section passes through the first contact plate. The second contact plate is connected to the side of the first contact plate parallel to the guide rod, and the connection between the second contact plate and the first contact plate forms an angle.

[0023] In some embodiments, the airbag detection fixture further includes:

[0024] Travel bracket, with a mounting plate connected to the bottom;

[0025] The travel slide rail, which connects to the clamping assembly, is located on the side of the travel bracket near the lifting cylinder. Both ends of the travel slide rail are connected to the travel bracket.

[0026] In some embodiments, the airbag detection fixture further includes:

[0027] The horizontal arm is located above the top opening of the liquid storage box. The end near the clamping component is connected to the clamping component, and the end near the travel slide rail is connected to the lifting cylinder. A groove is provided at its end, and a protruding rail is provided on the travel slide rail. The groove is connected to the protruding rail.

[0028] In some embodiments, the airbag detection fixture further includes:

[0029] The gravity sensor base has a gravity sensor connected to one side and a mounting plate connected to the other side.

[0030] In some embodiments, the airbag detection fixture further includes:

[0031] Industrial computer bracket, with the industrial computer connected at the top and the mounting plate connected at the bottom.

[0032] In some embodiments, the industrial computer bracket further includes:

[0033] The rotating assembly, located at the top of the industrial computer bracket, connects to the industrial computer.

[0034] Based on the above technical solution, this embodiment of the invention optimizes the tooling structure by setting grippers and a liquid storage box, taking into account both the measurement of airbag volume and airbag airtightness. By adjusting the distance between the pressure plates, it can adapt to various specifications of airbags to be tested, making it more adaptable and with a wider range of applications. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0036] Figure 1 This is a schematic diagram of the structure of one embodiment of the airbag testing fixture of this utility model;

[0037] Figure 2 This is a front view of a structural schematic diagram of an embodiment of the airbag testing fixture of this utility model;

[0038] Figure 3 This is a schematic diagram of the structure of one embodiment of the airbag testing fixture of this utility model;

[0039] Figure 4 This is a schematic diagram of one embodiment of the airbag testing fixture of this utility model.

[0040] In the picture:

[0041] 1. Industrial computer; 2. Industrial computer bracket; 3. Mounting plate; 4. Liquid storage box; 5. Test airbag; 6. Horizontal arm; 7. Clamping cylinder; 8. Guide rod; 801. Limiting part; 802. Straight section; 9. First contact plate; 10. Second contact plate; 11. Lifting cylinder; 12. Liquid level sensor; 13. Stroke slide rail; 14. Stroke bracket; 15. Gripper; 16. Limiting block; 17. Second connecting piece; 18. Gravity sensor; 19. Adhesive. Detailed Implementation

[0042] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0043] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model 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 utility model.

[0044] The terms "first," "second," and "third" 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. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] A sealed elastic airbag is installed in the shock absorber. The elastic airbag consists of two sealed elastic tubing airbags, two support rings, and two binding straps. The volume of the elastic airbag needs to be determined during the shock absorber installation process. During shock absorber operation, the elastic airbag needs to maintain good airtightness.

[0047] To address these issues, specialized testing fixtures were developed for measuring the volume and airtightness of airbags. However, several problems arise in practical operation. First, the irregular shape of airbags increases the difficulty of measuring their volume. Second, the tools used in the measurement process are inconvenient; conventional measuring tools include electronic scales and calculators, requiring manual operation by the measurement personnel. Furthermore, different sizes of airbags require different fixtures, necessitating more time for changing and managing these fixtures, resulting in low measurement efficiency. Finally, measuring volume and airtightness requires different fixtures, making the switching between them cumbersome and time-consuming.

[0048] To address the aforementioned issues, this application provides an airbag testing fixture capable of simultaneously measuring airbag volume and testing airtightness. This reduces the time required for switching between processes, simplifies operations, and improves testing efficiency. Furthermore, by setting the testing frequency, statistical data can be obtained, reducing random errors and enhancing the accuracy of volume measurement.

[0049] like Figure 1 and Figure 2 As shown, in one illustrative embodiment of the airbag testing fixture of this utility model, the airbag testing fixture includes:

[0050] Mounting plate 3 is plate-shaped and placed horizontally.

[0051] The liquid storage box 4 is located on one side of the mounting plate 3 and has a cubic structure with an opening at the top and a liquid storage space inside.

[0052] The liquid storage box 4 can be set as a transparent square water tank to hold the aqueous solution, so as to facilitate observation during the test whether the test airbag 5 is completely immersed in the aqueous solution and whether the test airbag 5 has any leakage.

[0053] Liquid level sensor 12 is attached to the side wall of the liquid storage box 4.

[0054] The sensing surface of the liquid level sensor 12 is in close contact with the outer wall of the liquid storage box 4. The liquid level sensor monitors the liquid level in the liquid storage box 4 in real time, and alarms when the liquid level is too low, thus improving the accuracy of the measurement data.

[0055] like Figure 4 As shown, the airbag detection fixture also includes adhesive 19, and the liquid level sensor 12 is attached to the liquid storage box 4 by adhesive 19.

[0056] Gravity sensor 18 is connected to the center of the bottom of liquid storage box 4 on one side and to mounting plate 3 on the other side.

[0057] The gravity sensor 18 is installed at the bottom of the liquid storage box 4. It can measure the weight of an object by sensing gravity. The gravity sensor 18 is connected to the industrial control computer 1 and can transmit gravity data to the industrial control computer 1 for analysis and recording.

[0058] The lifting cylinder 11 includes a cylinder barrel and a first piston rod, with the cylinder barrel mounted on the mounting plate 3.

[0059] The clamping assembly is located above the top opening of the liquid storage box 4 and is connected to the first piston rod for clamping the airbag 5 to be tested.

[0060] Industrial computer 1 is connected to liquid level sensor 12, gravity sensor 18, lifting cylinder 11 and clamping assembly.

[0061] In the above illustrative embodiment, this fixture is based on the mounting plate 3, on which a liquid storage box 4, a liquid level sensor 12, a gravity sensor 18, a lifting cylinder 11, a clamping assembly, and an industrial control computer 1 are arranged on the same side. The liquid storage box 4 is used to store the liquid required for testing, and the liquid level sensor 12 can monitor the liquid level in the box in real time.

[0062] During the measurement of the volume of the airbag 5 to be tested, an aqueous solution is injected into the liquid storage box 4. The airbag 5 to be tested is placed in the liquid storage box 4, and the gravity sensor 18 measures the gravity to obtain the first gravity data. The piston rod of the lifting cylinder 11 moves downward, driving the clamping assembly to descend. The clamping assembly contacts the airbag 5 to be tested, and the piston rod of the lifting cylinder descends again, driving the clamping assembly to press the airbag 5 to be tested until the airbag 5 to be tested is completely pressed into the aqueous solution in the liquid storage box 4. The gravity sensor 18 measures again to obtain the second gravity data. The industrial control computer 1 calculates the volume of the airbag 5 to be tested based on the first and second gravity data.

[0063] The lifting cylinder 11 and the clamping assembly work together to precisely control the position of the airbag 5 under test within the liquid storage box 4. The industrial control computer 1 intelligently regulates the entire testing process. After the airbag 5 is positioned in the aqueous solution, the clamping assembly squeezes the airbag 5 to perform an airtightness test.

[0064] Close collaboration among the various departments enabled automated testing, improving both efficiency and accuracy. All critical components can be centrally mounted on the same side of mounting plate 3, resulting in a more compact tooling structure, reduced space requirements, and enhanced overall stability.

[0065] In some embodiments, the clamping component includes:

[0066] The clamping cylinder 7 includes a cylinder body and a gripper 15. A first piston rod is connected to the outside of the cylinder body. A second piston rod is disposed inside the cylinder body. The gripper 15 includes two opposing clamping plates located at one end of the cylinder body near the liquid storage box 4 and axially connected to the second piston rod for clamping the airbag 5 to be tested.

[0067] The cylinder has a built-in second piston rod, and the gripper 15 is axially connected to the second piston rod. When the second piston rod moves, it drives the gripper 15 to open and close.

[0068] The clamping cylinder 7 provides power for the opening and closing of the gripper 15. The gripper 15 includes two opposing clamping plates. When the clamping cylinder 7 is working, the two clamping plates open or close, thereby clamping or releasing the airbag 5 to be tested. The cylinder body of the clamping cylinder 7 is connected to the first piston rod. The movement of the first piston rod drives the clamping cylinder 7 to move.

[0069] The structure of two clamping plates arranged opposite each other ensures that the airbag 5 under test is subjected to a uniform clamping force, ensuring that the airbag 5 under test is stable in position during the test and will not shake or shift, thus guaranteeing the reliability of the test results.

[0070] When the test airbag 5 is in the aqueous solution, the clamping cylinder 7 generates clamping force by compressing air, drives the gripper 15 to clamp the outer wall of the test airbag 5 and compress it, so that the internal pressure of the test airbag 5 increases. Observe whether there are bubbles overflowing in the aqueous solution. If there are, the test airbag 5 is leaking air. If not, the test airbag 5 has good air tightness.

[0071] In some embodiments, an uneven texture is provided on the side of any clamp that contacts the airbag 5 to be tested.

[0072] The clamp has uneven textured surfaces on the side that contacts the airbag 5 to be tested. When the clamp clamps the airbag 5 to be tested, these textures will increase the friction with the surface of the airbag 5.

[0073] The increased friction effectively prevents the airbag 5 under test from slipping during the testing process, further improving the stability of the clamping assembly in holding the airbag 5. At the same time, this design also avoids damage to the surface of the airbag 5 by the clamping plate, protecting the integrity of the airbag 5 while ensuring testing effectiveness.

[0074] like Figure 3 As shown, in some embodiments, the clamping assembly further includes:

[0075] Limiting block 16 connects to one side of the clamping plate that contacts the airbag 5 to be tested. The limiting blocks 16 on the two clamping plates are arranged opposite each other. When the clamping claws 15 close, the limiting blocks 16 arranged opposite each other abut against each other.

[0076] Limiting block 16 restricts the range of motion of the clamping plate to ensure that the clamping plate does not exceed a reasonable range during operation.

[0077] By limiting the range of motion of the clamping plate, damage to the airbag 5 under test due to excessive movement of the clamping plate is avoided, the service life of the clamping plate is extended, and the maintenance cost of the tooling is reduced.

[0078] The limiting block 16 is threaded, and a bolt structure is provided on the clamping plate. The distance between the limiting block 16 and the clamping plate is adjusted by the engagement of the threaded limit block 16 and the bolt structure, thus controlling the opening and closing angle of the gripper 15. The closer the limiting block 16 is to the clamping plate it is connected to, the smaller the gap between the two clamping plates when the gripper 15 closes. The farther the limiting block 16 is from the clamping plate it is connected to, the larger the gap between the two clamping plates when the gripper 15 closes. This prevents the gripper 15 from closing at an excessively large angle, which could damage the airbag 5 under test.

[0079] In some embodiments, the clamping component further includes:

[0080] The first connector is fixedly connected to the end of the cylinder near the liquid storage box.

[0081] The first connector can be bent, in a U-shape or L-shape. The end of the first connector near the cylinder body is connected to the clamping cylinder 7, and the end away from the cylinder body has a fixing hole through which the guide rod 8 passes. A second connector 17 is provided at the contact point between the first connector and the guide rod 8, fixing the first connector to the guide rod 8. The end of the first connector away from the cylinder body is axially connected to the gripper 15, serving to fix the gripper 15, and the gripper can move around the axis.

[0082] The guide rod 8 includes a straight section 802 and a limiting part 801. The straight section 802 passes through one end of the first connector near the liquid storage box 4, and the limiting part 801 is a spherical protrusion located at both ends of the straight section 802.

[0083] The pressure plate connects to the airbag 5 to be tested and includes a first contact plate 9 and a second contact plate 10. The first contact plate 9 is located between the first connecting member and the limiting part 801, and a straight section 802 passes through the first contact plate 9. The second connecting plate is located on the side of the first contact plate parallel to the guide rod 8, and the connection between the second contact plate and the first contact plate forms an angle.

[0084] A pressure plate is provided on each side of the first connector.

[0085] The pressure plate is used to press the airbag 5 to be tested into the water for measurement. The second contact plate 10 can ensure that the airbag 5 to be tested is controlled directly below the pressure plate, so as to prevent the airbag 5 to be tested from floating out of the water surface under the action of buoyancy during measurement.

[0086] The guide rod 8 provides guidance and positioning. Its straight section 802 penetrates the pressure plate, providing a path for the pressure plate's movement. The pressure plate can be horizontally displaced along the straight section 802, adjusted according to the specifications of the airbag 5 under test. Limiting parts 801 are located at both ends of the straight section 802 to prevent the pressure plate from detaching during movement. The first contact plate 9 of the pressure plate is located between the first connector and the limiting part 801, with the straight section 802 passing through it. The second contact plate 10 is located on both sides of the first contact plate 9, forming an angle. This structure allows the pressure plate to better conform to the airbag 5 under test.

[0087] The combined use of the pressure plate and guide rod 8 further enhances the fixation effect of the airbag 5 under test, ensuring the accurate positioning of the airbag 5 during the testing process. At the same time, the limiting part 801 improves the overall safety of the structure, preventing test failure due to the pressure plate detaching.

[0088] The first contact plate 9 is provided with a through hole, and the straight section 802 of the guide rod 8 passes through the through hole.

[0089] In some embodiments, the airbag detection fixture further includes:

[0090] Travel bracket 14, bottom connecting mounting plate 3.

[0091] The travel slide rail 13, which connects to the clamping assembly, is located on the side of the travel bracket 14 near the lifting cylinder 11. Both ends of the travel slide rail 13 are connected to the travel bracket 14.

[0092] The lifting cylinder 11 is located on the side of the travel slide rail 13 near the liquid storage box 4.

[0093] The travel bracket 14 and the travel slide rail 13 are parallel to each other and fixed on the mounting plate 3, providing support and guidance for the movement of the lifting cylinder 11. The lifting cylinder 11 is connected to the clamping assembly, and through its own extension and retraction, it drives the clamping assembly to move up and down along the travel slide rail 13, thereby realizing the lifting and lowering of the airbag 5 under test in the liquid storage box 4.

[0094] This structural design makes the lifting and lowering process of the airbag 5 under test more stable and precise, and can accurately control the depth of the airbag 5 under test in the liquid, thereby improving the accuracy of the test.

[0095] In some embodiments, the airbag detection fixture further includes:

[0096] The horizontal arm 6 is located above the top opening of the liquid storage box 4. One end near the clamping component is connected to the clamping component, and the other end near the travel slide rail 13 is connected to the lifting cylinder 11. A groove is provided at its end, and a protruding rail is provided on the travel slide rail 13. The groove is connected to the protruding rail.

[0097] A third connector is provided at one end of the cylinder body of the clamping cylinder 7 near the horizontal arm 6. The third connector can be bent, and the two ends of the third connector are respectively connected to the cylinder body of the clamping cylinder 7 and the horizontal arm 6.

[0098] One end of the horizontal arm 6 is connected to the clamping assembly, and the other end is connected to the lifting cylinder 11. When the lifting cylinder 11 extends or retracts, the power is transmitted to the clamping assembly through the horizontal arm 6, which drives the clamping assembly to move up and down. The clamping assembly presses the airbag 5 to be tested into the aqueous solution, which facilitates the measurement work.

[0099] A groove is provided at the end of the cross arm 6 and engages with the protruding rail of the travel slide rail 13, so that the cross arm 6 can move up and down along the travel slide rail 13, thereby improving the stability of movement.

[0100] The use of the horizontal arm 6 increases the force arm of the lifting cylinder 11 on the clamping components, making the power transmission more stable and improving the working efficiency of the entire tooling.

[0101] During the test, the clamping assembly can control the position of the airbag 5 under test in the aqueous solution and apply pressure to the outer wall of the airbag 5 under test through the gripper 15 to measure whether there is leakage.

[0102] In some embodiments, the airbag detection fixture further includes:

[0103] The gravity sensor base is connected to the gravity sensor 18 on one side and the mounting plate 3 on the other side.

[0104] The gravity sensor base provides stable support and protection for the gravity sensor 18, ensuring the accuracy of its measurement results and improving the reliability of the measurement.

[0105] By accurately measuring the weight change inside the liquid storage box 4, the volume of the airbag 5 under test is accurately calculated in the industrial control computer 1, providing reliable data support for the volume measurement of the airbag 5 under test.

[0106] In some embodiments, the airbag detection fixture further includes:

[0107] Industrial computer bracket 2, with industrial computer 1 connected to the top and mounting plate 3 connected to the bottom.

[0108] Industrial PC 1 can be configured as an all-in-one computer with a display screen, enabling human-computer interaction through the display screen.

[0109] The gravity sensor 18 can transmit the measured gravity data to the all-in-one computer via a transmitter and RS485.

[0110] The gravity data acquisition rate is 15 times per second.

[0111] The gravity sensor 18 can send the measured gravity data to the all-in-one computer via a height transmitter and a data acquisition card.

[0112] The gravity data acquisition rate is 5000 times / second.

[0113] The all-in-one computer can view, store, and export gravity data, and generate corresponding data curves.

[0114] The industrial computer 1 includes a control module for controlling the movement of the lifting cylinder 11 and the clamping assembly, implementing an automated control strategy, and automatically adjusting the operating parameters of the equipment according to the detection structure.

[0115] The industrial computer 1 includes a data processing module, which is used to collect gravity data from the gravity sensor 18, perform data processing and analysis, and store historical data. This data can be used for analysis, troubleshooting, report generation, and other requirements. It can also exchange data with external systems to form an automation system.

[0116] The data processing module of industrial computer 1 receives data from gravity sensor 18 and liquid level sensor 12, and analyzes and processes this data. The control module sends control commands to lifting cylinder 11 and clamping assembly to control their movements. Industrial computer bracket 2 provides mounting support for industrial computer 1. Industrial computer bracket 2 can also adjust the position of industrial computer 1 according to actual application requirements, making the equipment convenient for maintenance and operation.

[0117] The intelligent control of the industrial computer 1 makes the entire testing process more automated and precise, reduces interference from human factors, and improves the accuracy and reliability of the test results.

[0118] In some embodiments, the industrial computer bracket 2 further includes:

[0119] The rotating assembly is located on the top of the industrial computer bracket 2 and is connected to the industrial computer 1.

[0120] The rotating component is installed on the top of the industrial computer bracket 2 and connected to the industrial computer 1. It can drive the industrial computer 1 to rotate, thereby adjusting the angle and position of the industrial computer 1.

[0121] The rotating component makes the operation of the industrial computer 1 more convenient. Operators can adjust the angle of the industrial computer 1 according to actual needs, which facilitates observation and operation and improves work efficiency.

[0122] In measuring the volume of the airbag 5 under test, the volume of the object is determined by measuring the volume of liquid displaced by the airbag 5 in the aqueous solution. The volume measurement formula is as follows: .

[0123] in, The weight of the test airbag 5 not in the aqueous solution. The weight of the test airbag 5 in the aqueous solution is given. This is the sum of the volumes of the support ring, the strapping, and the tooling portion submerged in water of the airbag 5 under test. The weight is the sum of the weight of the support ring, the weight of the strapping, and the weight of the tooling part immersed in water for the airbag 5 under test. This represents the density of the rubber tubing.

[0124] During the airtightness test, the airbag 5 to be tested is first completely submerged in water. The clamps 15 are then closed to apply pressure to the outer wall of the airbag 5. The surface condition of the airbag 5 in the water is observed. If air bubbles appear, the airbag 5 is leaking and has poor airtightness. If no air bubbles appear, the airbag 5 has good airtightness.

[0125] The workflow of the airbag testing fixture includes: powering on the airbag testing fixture and connecting compressed air; injecting an appropriate amount of aqueous solution into the liquid storage tank 4; adjusting the lifting cylinder 11 to the highest point; and sending a measurement signal to the gravity sensor 18 after preparation, temporarily storing the value as the zero point for use to achieve the tare function; placing the airbag 5 to be tested on the water surface; the gravity sensor 18 measuring and calculating the weight of the airbag 5 at this time. .

[0126] The lifting cylinder 11 drives the clamping assembly to rise, placing the airbag 5 to be tested directly below the pressure plate. The distance between the pressure plates on both sides of the clamping cylinder 7 is adjusted so that the length of the two ends of the pressure plates is slightly less than the length of the airbag 5 to be tested, so that the two ends of the airbag 5 to be tested are exposed for subsequent observation.

[0127] The lifting cylinder 11 lowers the clamping assembly, completely submerging the airbag 5 under test in the water, and then measures and calculates the weight of the airbag 5 in the aqueous solution. Preset in industrial computer 1 , and , combined , The volume of the airbag 5 to be tested is obtained by calculating the volume measurement, and compared with the preset qualified airbag volume range to determine whether the volume of the airbag 5 to be tested is qualified and display it.

[0128] An airtightness test is conducted by using a clamping cylinder 7 to drive the gripper 15 to clamp the outer wall of the airbag 5 under test, increasing the internal pressure of the airbag 5. The airtightness is then determined by observing whether air bubbles escape from the surface of the airbag 5.

[0129] After the test is completed, raise the clamping assembly, drain the water, and remove the airbag 5 to be tested to complete one test.

[0130] Through the description of several embodiments of the airbag detection fixture of this utility model, it can be seen that the embodiments of the airbag detection fixture of this utility model have at least one or more of the following advantages:

[0131] 1. By collecting data through gravity sensor 18 and liquid level sensor 12, the airbag volume can be accurately calculated in industrial control computer 1, reducing calculation errors caused by human factors and improving the accuracy of airbag volume measurement.

[0132] 2. The airbag is held in the liquid storage box 4 by the clamping component for testing. The airbag testing fixture realizes the one-time measurement of airbag volume and airbag air tightness test, optimizes the fixture structure and improves the testing efficiency.

[0133] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0134] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An airbag detection fixture, characterized in that, include: Mounting plate; The liquid storage box is a cubic structure with an opening at the top and an internal liquid storage space. The liquid level sensor is installed on the side wall of the liquid storage box; The gravity sensor is connected to the bottom of the liquid storage box on one side and to the mounting plate on the other side. The lifting cylinder includes a cylinder barrel and a first piston rod, with the cylinder barrel mounted on a mounting plate; A clamping assembly is located above the top opening of the liquid storage box and is connected to the first piston rod for clamping the airbag to be tested. The industrial computer connects to the liquid level sensor, gravity sensor, lifting cylinder, and clamping assembly.

2. The airbag testing fixture according to claim 1, characterized in that, The clamping assembly includes: The clamping cylinder includes a cylinder body and grippers. A first piston rod is connected to the outside of the cylinder body. A second piston rod is installed inside the cylinder body. The grippers include two opposing clamping plates located at the end of the cylinder body near the liquid storage box and axially connected to the second piston rod for clamping the airbag to be tested.

3. The airbag testing fixture according to claim 2, characterized in that, The side of any clamp that contacts the airbag to be tested has an uneven texture.

4. The airbag testing fixture according to claim 2, characterized in that, The clamping assembly further includes: The limiting block is connected to the side of the clamp plate that contacts the airbag to be tested. The limiting blocks on the two clamp plates are set opposite to each other. When the clamps are closed, the limiting blocks set opposite to each other abut against each other.

5. The airbag testing fixture according to claim 2, characterized in that, The clamping assembly further includes: The first connector is fixedly connected to one end of the cylinder body near the liquid storage box; The guide rod includes a straight section and a limiting part. The straight section passes through the first connector, and the limiting part is a spherical protrusion located at both ends of the straight section. The pressure plate connects to the airbag to be tested and includes a first contact plate and a second contact plate. The first contact plate is located between the first connector and the limiting part, and a straight section passes through the first contact plate. The second contact plate is connected to the side of the first contact plate parallel to the guide rod, and the connection between the second contact plate and the first contact plate forms an angle.

6. The airbag testing fixture according to claim 1, characterized in that, The airbag testing fixture also includes: Travel bracket, with a mounting plate connected to the bottom; The travel slide rail, which connects to the clamping assembly, is located on the side of the travel bracket near the lifting cylinder. Both ends of the travel slide rail are connected to the travel bracket.

7. The airbag testing fixture according to claim 6, characterized in that, The airbag testing fixture also includes: The horizontal arm is located above the top opening of the liquid storage box. The end near the clamping component is connected to the clamping component, and the end near the travel slide rail is connected to the lifting cylinder. A groove is provided at its end, and a protruding rail is provided on the travel slide rail. The groove is connected to the protruding rail.

8. The airbag testing fixture according to any one of claims 1-7, characterized in that, The airbag testing fixture also includes: The gravity sensor base has a gravity sensor connected to one side and a mounting plate connected to the other side.

9. The airbag testing fixture according to any one of claims 1-7, characterized in that, The airbag testing fixture also includes: Industrial computer bracket, with the industrial computer connected at the top and the mounting plate connected at the bottom.

10. The airbag testing fixture according to claim 9, characterized in that, The industrial control computer bracket also includes: The rotating assembly, located at the top of the industrial computer bracket, connects to the industrial computer.

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