Workpiece air tightness detection device

Abstract

The utility model belongs to the technical field of detection devices, and particularly relates to a workpiece air tightness detection device which comprises a groove body, a lifting frame arranged in the groove body, a waterproof cylinder arranged between the lifting frame and the groove body, a fixing tool arranged on the lifting frame, a plurality of supporting rods arranged on the lifting frame, and a top plate jointly supported by the top ends of all the supporting rods. A piston air cylinder with the piston end facing the fixing tool is arranged at the bottom of the top plate, a sealing plug is arranged at the piston end of the piston air cylinder, an air pipe is arranged in the sealing plug, a one-way valve is arranged on the air pipe, and a plurality of illuminating lamps are symmetrically arranged on the top plate. Compared with the prior art, the detection device integrates the waterproof air cylinder, the piston air cylinder and the precise sensing element, so that efficient and automatic detection of the air tightness of the workpiece is realized, and the detection precision and efficiency are greatly improved. Meanwhile, due to the design of the oil film removing device, the filtering tank and the like in the device, the cleanliness of the detection environment is effectively guaranteed, and external interference is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing devices, and specifically relates to a workpiece airtightness testing device. Background Technology

[0002] In the automotive manufacturing industry, with technological advancements and increasingly stringent consumer demands for product quality, performance testing of airtight components has become a crucial step in ensuring the safe and stable operation of vehicles. These components, such as fuel system assemblies, braking system parts, and engine seals, directly affect the overall performance and lifespan of the vehicle. Substandard airtightness can lead to serious safety hazards such as fuel leaks and brake failure, impacting not only the driving experience but also threatening passenger safety. Therefore, there is a certain market demand for designing a workpiece airtightness testing device. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model provides a workpiece airtightness testing device to solve the above problems.

[0004] This utility model discloses a workpiece airtightness testing device, comprising a tank, a lifting frame disposed within the tank, a waterproof cylinder disposed between the lifting frame and the tank, a fixed fixture disposed on the lifting frame, and several support rods disposed on the lifting frame. The top ends of all the support rods are connected to a top plate, and a piston cylinder with its piston end facing the fixed fixture is disposed at the bottom of the top plate. A sealing plug is disposed at the piston end of the piston cylinder, and an air pipe is disposed inside the sealing plug. A one-way valve is disposed on the air pipe, and several lighting lamps are symmetrically disposed on the top plate.

[0005] Furthermore, the tank is provided with several vertical guide rods, and the lifting frame is provided with rod sleeves that correspond one-to-one with the guide rods.

[0006] Furthermore, an oil removal film is adsorbed on the inner wall of the tank.

[0007] Furthermore, several adjustable feet are symmetrically arranged at the bottom of the tank.

[0008] Furthermore, a level gauge is installed inside the tank.

[0009] Furthermore, a universal adjustment rod is provided on each of the top two sides of the tank, and a supplementary light is provided at the end of the universal adjustment rod.

[0010] Furthermore, the tank is equipped with a drain valve.

[0011] Furthermore, a water injection pipe is provided on the tank, and a filter tank is provided at the bottom of the water injection pipe.

[0012] Compared to existing technologies, this testing device integrates a waterproof cylinder, a piston cylinder, and precision sensing elements to achieve efficient and automated testing of workpiece airtightness, significantly improving testing accuracy and efficiency. Simultaneously, the design of the oil removal film device and filter tank effectively ensures the cleanliness of the testing environment and reduces external interference. The overall design not only meets the stringent requirements of the automotive manufacturing industry for high-quality products but also promotes the intelligent upgrading of production lines, demonstrating significant market application value and industry-driving effect. Attached Figure Description

[0013] Figure 1 This is a front view of the present invention;

[0014] Figure 2 This is a front sectional view of the present invention;

[0015] Figure 3 This is a top view of the lifting frame;

[0016] Figure 4 This is a cross-sectional view of the sealing plug.

[0017] In the diagram: 1. Tank; 2. Lifting frame; 3. Waterproof cylinder; 4. Fixture; 5. Support rod; 6. Top plate; 7. Piston cylinder; 8. Sealing plug; 9. Air pipe; 10. Check valve; 11. Lighting lamp; 12. Guide rod; 13. Rod sleeve; 14. Oil film remover; 15. Adjustable foot; 16. Level gauge; 17. Universal adjusting rod; 18. Drain valve; 19. Water injection pipe; 20. Filter tank. Detailed Implementation

[0018] To better understand this utility model, the following is in conjunction with... Figures 1 to 4 The embodiments of this utility model will be explained in detail below.

[0019] It should be noted that the directions "front, back, left, right, up, down" mentioned in the text are all relative to the direction of the text. Figure 1 The directions are based on "front, back, left, right, up, down".

[0020] This utility model discloses a workpiece airtightness testing device, comprising a tank 1, a lifting frame 2 disposed within the tank 1, and a waterproof cylinder 3 disposed between the lifting frame 2 and the tank 1 for driving the lifting frame 2 to move up and down. A fixing fixture 4 is disposed on the lifting frame 2 for fixing the workpiece to be tested. Several support rods 5 are also disposed on the lifting frame 2, the top ends of which collectively support a top plate 6. A piston cylinder 7 with its piston end facing the fixing fixture 4 is disposed at the bottom of the top plate 6. A sealing plug 8 is disposed at the piston end of the piston cylinder 7 for sealing the testing port of the workpiece. An air pipe 9 is disposed inside the sealing plug 8, and a one-way valve 10 is disposed on the air pipe 9 to ensure that gas can only enter the interior of the workpiece through the air pipe 9, preventing gas backflow. Several lighting lamps 11 are symmetrically disposed on the top plate 6 for illuminating the workpiece and facilitating observation of the test results.

[0021] Several vertical guide rods 12 are installed inside the tank 1, and the lifting frame 2 is equipped with rod sleeves 13 corresponding to the guide rods 12. The cooperation between the guide rods 12 and the rod sleeves 13 makes the lifting frame 2 more stable when moving up and down.

[0022] An oil film remover 14 is adsorbed on the inner wall of the tank 1 to remove the oil film on the water surface and prevent the oil film from interfering with the view and affecting the test results.

[0023] Several adjustable feet 15 are symmetrically arranged at the bottom of the tank 1 to adjust the levelness of the tank 1 and ensure the detection accuracy.

[0024] A level gauge 16 is installed inside the tank 1 to monitor the water level in the tank 1 in real time and ensure that the water level is within a safe range.

[0025] A universal adjustment rod 17 is provided on each of the two sides of the top of the tank 1. The end of the universal adjustment rod 17 is provided with a supplementary light to supplement the lighting, further illuminate the workpiece, and improve the detection accuracy.

[0026] A vent valve 18 is installed on the tank body 1 to release the gas in the tank body 1 after the test is completed, so as to prevent gas residue from affecting the next test.

[0027] A water injection pipe 19 is installed on the tank body 1, and a filter tank 20 is installed at the bottom of the water injection pipe 19 to inject filtered water into the tank body 1 to prevent impurities in the water from affecting the test results.

[0028] The usage and principle of this utility model:

[0029] First, the workpiece to be inspected is fixed on the fixture 4. Simultaneously, the piston cylinder 7 drives the sealing plug 8 to seal the inspection port of the workpiece. Then, the waterproof cylinder 3 drives the lifting frame 2 and the workpiece on the fixture 4 to descend into the water in the tank 1. Next, gas is injected into the workpiece through the air pipe 9, while observing whether bubbles are generated around the workpiece. If bubbles are generated, it indicates that the workpiece has a leak and its airtightness is unqualified. Next, the waterproof cylinder 3 is activated, driving the lifting frame 2 and the workpiece on the fixture 4 to rise to the water surface. Simultaneously, the piston cylinder 7 is controlled to retract, pulling out the sealing plug 8 on the workpiece. Finally, a new workpiece is replaced on the fixture 4, and the next round of inspection is performed.

[0030] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A workpiece airtightness testing device, characterized in that: The utility model provides a kind of lifting frame, including groove (1), the lifting frame (2) is arranged in the groove (1), the waterproof cylinder (3) is arranged between the lifting frame (2) and groove (1), the fixing tool (4) is arranged on the lifting frame (2), several support rods (5) are arranged on the lifting frame (2), the top end of all the support rods (5) is jointly received with a top plate (6), the bottom of the top plate (6) is provided with the piston cylinder (7) with piston end towards fixed tool (4), the piston end of the piston cylinder (7) is provided with sealing plug (8), sealing plug (8) is provided with a gas pipe (9) in, the gas pipe (9) is provided with one-way valve (10), the top plate (6) is provided with several symmetrical lighting lamps (11).

2. A device for detecting the tightness of a workpiece as claimed in claim 1, characterized in that: The groove (1) is provided with several vertical guide rods (12), and the lifting frame (2) is provided with a rod sleeve (13) corresponding to the guide rod (12).

3. A device for detecting the tightness of a workpiece as claimed in claim 1, characterized in that: The inner wall of the groove (1) is adsorbed with an oil removal film device (14).

4. A device for detecting the tightness of a workpiece as claimed in claim 1, characterized in that: The bottom of the groove (1) is symmetrically provided with several adjusting foot supports (15).

5. A device for detecting the tightness of a workpiece as claimed in claim 1, characterized in that: The groove (1) is provided with a liquid level meter (16).

6. A device for detecting the tightness of a workpiece as claimed in claim 1, characterized in that: The top of the groove (1) is provided with a universal adjusting rod (17) on both sides, and the end of the universal adjusting rod (17) is provided with a light supplementing lamp.

7. A device for detecting the tightness of a workpiece as claimed in claim 1, characterized in that: The groove (1) is provided with an emptying valve (18).

8. A device for detecting the tightness of a workpiece as claimed in claim 1, characterized in that: The groove (1) is provided with a water injection pipe (19), and the bottom of the water injection pipe (19) is provided with a filter tank (20).

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