An automated product air tightness detection device

Abstract

The utility model discloses an automatic product air tightness detection equipment relates to air tightness detection technical field, including frame, the upside of frame is fixed with the water storage tank, the four corners of frame are fixed with four corresponding support rod, and the upper end of four support rods is fixed with the top plate, the upside of top plate is installed with two corresponding cylinder no.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically to an automated product airtightness testing device. Background Technology

[0002] In the production and management of cover products today, it is generally necessary to test the airtightness of the pores after molding to prevent leakage of internal media or intrusion of external impurities, which could affect the safety and lifespan of the entire machine. The traditional airtightness testing method is the bubble method, also known as immersion testing, which involves immersing the container in water to check for leaks. This manual method is inefficient, labor-intensive, and lacks automation, making it difficult to meet the demand for rapid and accurate airtightness testing of pores in the mass production of cover products. Therefore, there is an urgent need for an airtightness testing device that is compact, easy to operate, versatile, and capable of automated testing.

[0003] Traditional manual immersion testing involves placing a cover plate in a water tank and manually injecting compressed air into the vents to observe whether bubbles form in the water. This method is inefficient and susceptible to human factors, such as operator fatigue or manual errors, making it difficult to guarantee the product's airtightness. Moreover, when dealing with batches of samples, processing each one manually is extremely time-consuming, making it difficult to meet the demands of large-scale, high-efficiency production. While single-station airtightness testing devices have solved some of the problems associated with the "immersion method," such as dispersed manual labor and large space requirements, they become a bottleneck for the entire production line when order volumes increase, forcing frequent downtime in downstream processes. While single-station airtightness testing devices are adequate for "small batch, single model" scenarios, their shortcomings, such as cycle time bottlenecks, changeover costs, maintenance loads, and accuracy instability, are becoming increasingly prominent in modern manufacturing environments characterized by "multiple varieties, large batches, and data traceability." These shortcomings have become key bottlenecks restricting further improvements in production line efficiency and quality. In summary, existing technologies have many deficiencies in both manual inspection and automation, particularly in the airtightness testing of batch products, where inefficiency and insufficient automation are prominent issues. Therefore, we propose an automated product airtightness testing device. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an automated product airtightness testing device that can realize the fully automated operation of multi-station synchronous loading and unloading, automatic pressing and sealing, precise immersion in water and airtightness data acquisition, effectively improve testing efficiency and consistency, reduce the intensity of manual intervention, and adapt to the rapid changeover needs of multiple product types through modular structure and flexible positioning design, which can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automated product airtightness testing device, comprising a frame, a water tank fixed to the upper side of the frame, four corresponding support rods fixed at the four corners of the frame, a top plate fixed to the upper end of the four support rods, two corresponding cylinders II mounted on the upper side of the top plate, a platform II fixed to the lower end of the piston rods of the two cylinders II, two corresponding cylinders I mounted on the upper side of the platform II, two corresponding openings opened on the upper side of the top plate, the two cylinders I respectively located inside the two openings, the platform I fixed to the lower end of the piston rods of the two cylinders I, the platform I corresponding to the water tank, and the lower side of the platform I... Four corresponding clamping assemblies are installed, with air guiding components installed inside each clamping assembly. A pressure regulating valve is installed on the left side of the frame, and evenly distributed operating rods are installed on the upper left end of the frame. Four corresponding second guide rods are fixed to the lower side of the second platform, and four corresponding mounting holes are opened on the upper side of the first platform. Second guide sleeves are fixed inside the mounting holes, and the second guide rods are slidably connected inside the corresponding second guide sleeves. A base plate is fixed to the lower side of the four second guide rods, and a pressure sensor is installed on the lower side of the base plate. By setting up four clamping assemblies, multi-station simultaneous operation can be achieved, improving detection efficiency, reducing manual intervention, and meeting the needs of mass production.

[0006] The pressure sensor is bidirectionally electrically connected to an external PLC controller, the input ends of the operating levers are all electrically connected to the output ends of the external PLC controller, and the output ends of all the operating levers are electrically connected to the input ends of two cylinders and two cylinders, respectively.

[0007] Furthermore, the fixture assembly includes a support box, telescopic rods, a bracket, a placement plate, positioning frames, positioning blocks, and the product to be tested. Four corresponding placement plates are provided on the lower side of platform one. Two corresponding support boxes are provided on the upper and lower sides of each placement plate, connected by four telescopic rods. All lower support boxes are fixed to the upper side of the base plate. Four corresponding positioning frames are bolted to the lower support boxes. The placement plate is fixed above the lower support boxes by the four positioning frames. Seven corresponding positioning blocks are bolted to the upper side of the placement plate. The product to be tested is fixed above the placement plate by the seven positioning blocks. Three corresponding telescopic rods are fixed to the upper side of the upper support box. All telescopic rods are fixed to the lower side of platform one. A pressure sensor two is installed inside the upper support box. The pressure sensor two is bidirectionally electrically connected to an external PLC controller. By setting positioning blocks and positioning frames, stable clamping of the product to be tested during the testing process is achieved, ensuring repeatability and positioning accuracy, reducing the requirements for robotic arm placement, and improving the reliability of automated feeding and testing.

[0008] Furthermore, the air guiding assembly includes an air guiding pipe, a sliding pipe, a connecting sleeve, a support spring, and an air inlet. Two corresponding air guiding pipes are fixed to the lower side of the upper support box. The right-side air guiding pipe communicates with the inner cavity of the upper support box. An exhaust port is provided on the side of the upper support box. A sliding pipe and a support spring are fitted onto the circumferential surface of the air guiding pipe. The lower end of the support spring is fixed to the upper end of the sliding pipe, and the upper end of the support spring is fixed to the surface of the air guiding pipe. A connecting sleeve is fixed to the lower end of the sliding pipe, and a sealing rubber ring is fixed to the lower end inside the connecting sleeve. The left-side connecting... The connecting sleeve is connected to the air inlet port of the product under test, and the connecting sleeve on the right side is connected to the air outlet port of the product under test. The connecting sleeve on the left side has an air inlet on its circumference. An air inlet nozzle is fixed inside the air inlet. In use, a flexible hose is used to connect all the air inlets to the air outlet of the pressure regulating valve, and then the external air inlet channel is connected to the air inlet of the pressure regulating valve. After connection, inflation, pressure stabilization and leakage detection can be realized. The buffer of the supporting spring and the sealing rubber ring structure ensure the accuracy of the air tightness test. It supports independent air supply for multiple stations, improving detection efficiency and data traceability.

[0009] Furthermore, the top plate has four corresponding openings on its upper side. A first guide sleeve is fixed inside the opening, and a first guide rod is slidably connected inside the first guide sleeve. All four first guide rods are fixed on the upper side of the second platform. By setting the first guide sleeve and the first guide rod, the movement of the second platform is linearly guided, ensuring that the second platform remains stable and accurate during the pressing process, avoiding deviation, and improving the repeatability and reliability of the equipment.

[0010] Furthermore, evenly distributed feet are fixed to the lower side of the frame, and four corresponding casters are installed at the left and right ends of the lower side of the frame. The feet and casters ensure that the equipment can move while maintaining its stability. This facilitates flexible deployment and position adjustment on the production line, reduces vibration, and ensures that the equipment is securely placed during the testing process.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This automated product airtightness testing equipment has the following advantages: By setting up four fixture components, the design enables multi-station synchronous inspection during use, allowing multiple products to be processed at once. This greatly enhances the equipment's batch inspection capabilities, shortens the overall inspection cycle, and meets the demands of modern manufacturing for high efficiency and high throughput. At the same time, through precise positioning and floating misalignment allowance mechanisms, the requirements for material feeding accuracy are reduced, improving the equipment's versatility and reliability, and providing a flexible inspection solution for diverse products. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the fixture assembly structure of this utility model.

[0013] In the diagram: 1. Foot cup, 2. Casters, 3. Frame, 4. Water tank, 5. Clamp assembly, 51. Support box, 52. Telescopic rod, 53. Bracket, 54. Placement plate, 55. Positioning frame, 56. Positioning block, 57. Product under test, 6. Air guide assembly, 61. Air guide pipe, 62. Slide pipe, 63. Connecting sleeve, 64. Support spring, 65. Air inlet, 7. Support rod, 8. Platform 1, 9. Platform 2, 10. Cylinder 1, 11. Cylinder 2, 12. First guide sleeve, 13. First guide rod, 14. Top plate, 15. Second guide rod, 16. Operating lever, 17. Pressure regulating valve, 18. Second guide sleeve, 19. Base plate. Detailed Implementation

[0014] Please see Figure 1-2 This embodiment provides a technical solution: an automated product airtightness testing device, including a frame 3, a water tank 4 fixed on the upper side of the frame 3, four corresponding support rods 7 fixed at the four corners of the frame 3, a top plate 14 fixed at the upper end of the four support rods 7, two corresponding cylinders 11 mounted on the upper side of the top plate 14, a platform 9 fixed at the lower end of the piston rod of the two cylinders 11, two corresponding cylinders 10 mounted on the upper side of the platform 9, two corresponding openings on the upper side of the top plate 14, the two cylinders 10 located inside the two openings respectively, a platform 8 fixed at the lower end of the piston rod of the two cylinders 10, the platform 8 corresponding to the water tank 4, and a platform 8 mounted on the lower side of the platform 8. There are four corresponding fixture assemblies 5. An air guiding assembly 6 is installed inside the fixture assembly 5. A pressure regulating valve 17 is installed on the left side of the frame 3. An evenly distributed operating rod 16 is installed on the upper left end of the frame 3. Four corresponding second guide rods 15 are fixed on the lower side of the second platform 9. Four corresponding mounting holes are opened on the upper side of the first platform 8. A second guide sleeve 18 is fixed inside the mounting hole. The second guide rod 15 is slidably connected inside the corresponding second guide sleeve 18. A base plate 19 is fixed on the lower side of the four second guide rods 15. A pressure sensor is installed on the lower side of the base plate 19. By setting four fixture assemblies 5, multi-station simultaneous operation can be realized, improving detection efficiency, reducing manual intervention, and meeting the needs of mass production. The fixture assembly 5 includes a support box 51, a telescopic rod 52, a bracket 53, a placement plate 54, a positioning frame 55, a positioning block 56, and a product to be tested 57. Four corresponding placement plates 54 are provided on the lower side of the platform 8. Two corresponding support boxes 51 are provided on the upper and lower sides of each placement plate 54. The two support boxes 51 are connected by four telescopic rods 52. All the lower support boxes 51 are fixed to the upper side of the base plate 19. Four corresponding positioning frames 55 are bolted to the lower support boxes 51. The placement plate 54 is fixed above the lower support boxes 51 by the four positioning frames 55. The upper side of the placement plate 54... Seven corresponding positioning blocks 56 are fixed by bolts. The product to be tested 57 is fixed above the placement plate 54 by the seven positioning blocks 56. Three corresponding telescopic rods 52 are fixed on the upper side of the support box 51. All telescopic rods 52 are fixed on the lower side of the platform 8. Pressure sensor 2 is installed inside the support box 51. Pressure sensor 2 is bidirectionally electrically connected to the external PLC controller. By setting the positioning blocks 56 and positioning frame 55, the product to be tested 57 is stably clamped during the testing process, ensuring repeatability and positioning accuracy, reducing the requirements for robotic arm placement, and improving the reliability of automated feeding and testing. The air guiding assembly 6 includes an air guiding pipe 61, a sliding pipe 62, a connecting sleeve 63, a support spring 64, and an air inlet 65. Two corresponding air guiding pipes 61 are fixed to the lower side of the upper support box 51. The right air guiding pipe 61 communicates with the inner cavity of the upper support box 51. An exhaust port is provided on the side of the upper support box 51. The sliding pipe 62 and the support spring 64 are fitted onto the circumferential surface of the air guiding pipe 61. The lower end of the support spring 64 is fixed to the upper end of the sliding pipe 62, and the upper end of the support spring 64 is fixed to the surface of the air guiding pipe 61. The lower end of the sliding pipe 62 is fixed with a connecting sleeve 63, and a sealing rubber ring is fixed to the lower end inside the connecting sleeve 63. The left connecting sleeve 63 is connected to the air inlet port of the product under test 57, and the right connecting sleeve 63 is connected to the air outlet port of the product under test 57. An air inlet is provided on the circumferential surface of the left connecting sleeve 63, and an air inlet nozzle 65 is fixed inside the air inlet. In use, a hose is used to connect all the air inlets 65 to the air outlet of the pressure regulating valve 17, and then the external air inlet channel is connected to the air inlet of the pressure regulating valve. After connection, inflation, pressure stabilization and leakage detection can be realized. The buffer and sealing rubber ring structure of the support spring 64 ensure the accuracy of the air tightness test. It supports independent air supply for multiple stations, improves detection efficiency and data traceability. Among them: pressure sensor 1 is bidirectionally electrically connected to the external PLC controller, the input end of the operating lever 16 is electrically connected to the output end of the external PLC controller, and the output end of all operating levers 16 is electrically connected to the input ends of two cylinders 10 and two cylinders 11 respectively.

[0015] The top plate 14 has four corresponding openings on its upper side. A first guide sleeve 12 is fixed inside the opening. A first guide rod 13 is slidably connected inside the first guide sleeve 12. All four first guide rods 13 are fixed on the upper side of the platform 2 9. By setting the first guide sleeve 12 and the first guide rod 13, the movement of the platform 2 9 is linearly guided, ensuring that the platform 2 9 remains stable and accurate during the pressing process, avoiding deviation, improving the repeatability and reliability of the equipment.

[0016] Among them: the lower side of the frame 3 is fixed with evenly distributed foot cups 1, and four corresponding casters 2 are installed at the left and right ends of the lower side of the frame 3. By setting the foot cups 1 and casters 2, the equipment can be moved, while ensuring the stability of the equipment, which facilitates flexible deployment and adjustment of the position on the production line, reduces vibration, and ensures that the equipment is firmly placed during the testing process.

[0017] The working principle of the automated product airtightness testing equipment provided by this utility model is as follows: First, during the equipment initialization phase, the air inlets 65 of all air guide components 6 are connected to the air outlet of the pressure regulating valve 17 via hoses, and an external air source is connected to the air inlet of the pressure regulating valve 17 to establish a stable air circuit system and ensure a reliable supply of compressed air. The operator then places the product to be tested 57 on the placement plate 54 of the clamping assembly 5 using a robotic arm or manually. The positioning block 56 and positioning frame 55 are used to achieve precise clamping of the product, ensuring repeatability. Next, the external PLC controller activates cylinder 11 via the operating lever 16, pushing platform 9 downwards. Platform 9 is smoothly pressed down by the guidance of the first guide rod 13 and the first guide sleeve 12. Simultaneously, the piston rod of cylinder 10 extends, causing platform 8 and the clamping assembly 5 below to descend as a whole. This allows the connecting sleeve 63 of the air guide component 6 to automatically connect with the air inlet and outlet ports of the product to be tested 57 under the buffer of the support spring 64, forming a sealed connection. Then, cylinder 11 continues to operate. The system pushes platform 2 (9) and platform 1 (8) further down. The second guide rod 15 and the second guide sleeve 18 provide linear guidance to ensure that the product is stably submerged in the water in the water tank 4. The pressure sensor 1 detects the position in real time and feeds back a signal to the PLC controller to lock the submersion state. During the testing phase, the pressure regulating valve 17 stabilizes the compressed air to the set value and then fills the product through the connected air inlet 65 and air guide assembly 6 to carry out the inflation, pressure stabilization and pressure holding process. The operator observes the bubble situation in the water, the pressure sensor 2 monitors the internal pressure change, and the PLC controller records the data and determines the air tightness. After the test is completed, the reset module acts in sequence. First, the air source is shut off, the cylinder 2 (11) retracts to raise the product out of the water surface, and then the cylinder 1 (10) retracts to detach the air guide assembly 6 from the product to avoid damage. Throughout the process, the manual intervention function can be realized through the operating lever 16 for single-step control, which is used for debugging or abnormal handling. The feet 1 and casters 2 at the bottom of the frame 3 ensure the stability of the equipment, and the support rod 7 and the top plate 14 provide structural support, ultimately realizing efficient and automated multi-station air tightness testing.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An automated product airtightness testing device, characterized in that: The system includes a frame (3), on which a water tank (4) is fixed. Four corresponding support rods (7) are fixed at the four corners of the frame (3). A top plate (14) is fixed to the upper end of each support rod (7). Two corresponding cylinders (11) are installed on the upper side of the top plate (14). A platform (9) is fixed to the lower end of the piston rod of each cylinder (11). Two corresponding cylinders (10) are installed on the upper side of the platform (9). Two corresponding openings are opened on the upper side of the top plate (14). The two cylinders (10) are located inside the two openings respectively. A platform (8) is fixed to the lower end of the piston rod of each cylinder (10). The platform (8) corresponds to the water tank (4). Four corresponding clamping assemblies (5) are installed on the lower side of platform one (8). An air guiding assembly (6) is installed inside the clamping assembly (5). A pressure regulating valve (17) is installed on the left side of the frame (3). An evenly distributed operating rod (16) is installed on the upper left end of the frame (3). Four corresponding second guide rods (15) are fixed on the lower side of platform two (9). Four corresponding mounting holes are opened on the upper side of platform one (8). A second guide sleeve (18) is fixed inside the mounting hole. The second guide rod (15) is slidably connected inside the corresponding second guide sleeve (18). A base plate (19) is fixed on the lower side of the four second guide rods (15). A pressure sensor one is installed on the lower side of the base plate (19).

2. The automated product airtightness testing equipment according to claim 1, characterized in that: The clamp assembly (5) includes a support box (51), a telescopic rod (52), a bracket (53), a placement plate (54), a positioning frame (55), a positioning block (56), and a product to be tested (57). Four corresponding placement plates (54) are provided on the lower side of the platform (8). Two corresponding support boxes (51) are provided on the upper and lower sides of each placement plate (54). The two support boxes (51) are connected by four telescopic rods (52). All the lower support boxes (51) are fixed to the upper side of the base plate (19). Four corresponding positioning frames (55) are bolted to the lower support boxes (51). The placement plate (54) is fixed above the support box (51) on the lower side by four positioning brackets (55). Seven corresponding positioning blocks (56) are fixed on the upper side of the placement plate (54) by bolts. The product to be tested (57) is fixed above the placement plate (54) by seven positioning blocks (56). Three corresponding telescopic rods (52) are fixed on the upper side of the support box (51). All telescopic rods (52) are fixed on the lower side of platform one (8). Pressure sensor two is installed inside the support box (51) on the upper side. Pressure sensor two is bidirectionally electrically connected to the external PLC controller.

3. The automated product airtightness testing equipment according to claim 2, characterized in that: The air guiding assembly (6) includes an air guiding pipe (61), a sliding pipe (62), a connecting sleeve (63), a support spring (64), and an air inlet (65). Two corresponding air guiding pipes (61) are fixed to the lower side of the upper support box (51). The right air guiding pipe (61) communicates with the inner cavity of the upper support box (51). An exhaust port is provided on the side of the upper support box (51). The sliding pipe (62) and the support spring (64) are sleeved on the circumferential surface of the air guiding pipe (61). The lower end of the support spring (64) is fixed to the sliding pipe. At the upper end of (62), the upper end of the support spring (64) is fixed to the surface of the air guide tube (61), the lower end of the slide tube (62) is fixed with a connecting sleeve (63), the lower end of the connecting sleeve (63) is fixed with a sealing rubber ring, the left connecting sleeve (63) is connected to the air inlet port of the product to be tested (57), the right connecting sleeve (63) is connected to the air outlet port of the product to be tested (57), an air inlet is provided on the circumferential surface of the left connecting sleeve (63), and an air inlet nozzle (65) is fixed inside the air inlet.

4. The automated product airtightness testing equipment according to claim 1, characterized in that: The top plate (14) has four corresponding openings on its upper side. A first guide sleeve (12) is fixed inside the opening. A first guide rod (13) is slidably connected inside the first guide sleeve (12). All four first guide rods (13) are fixed on the upper side of the platform (9).

5. The automated product airtightness testing equipment according to claim 1, characterized in that: The frame (3) has evenly distributed foot cups (1) fixed on its lower side, and four corresponding casters (2) are installed on the left and right ends of the lower side of the frame (3).

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