Shell airtightness detection device

Abstract

The utility model relates to the technical field of workpiece detection, and relates to a shell airtightness detection device. After the shell is positioned by the detection jig, the material pressing mechanism presses and positions the detection jig and the shell on the detection station, and the driving assembly drives the sealing block on the sealing frame to be connected and sealed with the hole site on the side edge of the shell, so that the shell and the detection jig are limited; the detection precision is prevented from being influenced by position deviation caused by leakage detection in the detection process, gas is prevented from leaking from the port, the detection is more accurate, and whether the air tightness of the shell is qualified or not can be quickly obtained by communicating the airtight joint with leakage detection equipment.

Description

Technical Field

[0001] This utility model relates to the field of workpiece inspection technology, and specifically to a shell airtightness testing device. Background Technology

[0002] In the machinery manufacturing industry, airtightness testing is frequently conducted on some components. For certain products, airtightness is a crucial indicator. Poor airtightness can lead to leaks, which directly affect the reliability, economy, and overall performance of the machinery, resulting in problems such as machine malfunction, abnormal operation, reduced efficiency, shortened lifespan, fuel waste, and environmental pollution during actual use.

[0003] Existing airtightness testing equipment has poor versatility. A single testing device is limited to testing the upper and lower end faces of the housing that need to be sealed, and cannot seal the sides of the housing. This increases the production costs for manufacturers of various types of housings. In addition, when sealing multiple points, it uses rigid sealing, which cannot effectively seal multiple points at the same time, thus affecting the airtightness testing results. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a housing airtightness testing device that prevents gas from leaking from the port, makes the detection more accurate, and can quickly determine whether the airtightness of the housing is qualified.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A housing airtightness detection device, comprising:

[0007] The frame has testing stations installed on it;

[0008] A testing fixture is provided at the testing station, and the testing fixture is used to position the housing;

[0009] A sealing mechanism is disposed on one side of the testing fixture. The sealing mechanism includes a driving component and a sealing frame. The driving component is drivenly connected to the sealing frame. The sealing frame is provided with a sealing block that matches the side hole of the housing. The driving component is used to drive the sealing block on the sealing frame to connect and seal with the side hole of the housing.

[0010] A pressing mechanism is disposed above the testing fixture, and the pressing mechanism is used to press and position the testing fixture and the housing at the testing station.

[0011] In one embodiment of this utility model, the pressing mechanism includes a drive frame and a booster cylinder. The drive frame is mounted on the machine frame, and the booster cylinder is mounted on the drive frame. The booster cylinder is driven to drive the drive plate. The booster cylinder drives the drive plate to move toward the testing fixture to press and position the housing at the testing station.

[0012] In one embodiment of this utility model, a guide rod is provided between the drive frame and the machine frame, and a guide sleeve matching the guide rod is provided on the drive plate. The guide sleeve is slidably mounted on the guide rod, and a spring is sleeved on the guide rod. When the booster cylinder drives the drive plate to move toward the detection fixture, the guide sleeve compresses the spring.

[0013] In one embodiment of the present invention, a detection component is further included. The detection component includes a detection frame, which is disposed between the drive frame and the machine frame. A plurality of detection sensors are disposed on the detection frame, and the detection sensors are disposed opposite to the drive board.

[0014] In one embodiment of this utility model, the testing fixture includes an upper plate and a lower plate. A bottom plate is provided on the lower plate, and a lower sealing ring is provided on the bottom plate. A pressure plate is provided on the upper plate, and an upper sealing ring is provided on the pressure plate. The pressure plate and the bottom plate are connected by bolts.

[0015] In one embodiment of this utility model, the base plate is provided with a limiting groove that matches the housing, the limiting groove is provided with a positioning pin, the base plate is provided with a sealing groove, the lower sealing ring is disposed in the sealing groove, the pressure plate is provided with an installation groove, and the upper sealing ring is engaged in the installation groove.

[0016] In one embodiment of the present invention, the driving assembly includes a guide frame, a guide cylinder is disposed on the guide frame, the guide cylinder is drivenly connected to the sealing frame, and a guide rod is disposed on the sealing frame, the guide rod passing through the linear bearing of the guide frame.

[0017] In one embodiment of this utility model, the sealing block is provided with a contoured surface that matches the side hole of the housing, and a sealing sleeve is provided on the contoured surface. The shape of the sealing sleeve matches the contoured surface, and the sealing sleeve is detachably connected to the sealing block.

[0018] In one embodiment of this utility model, a guide plate is provided on the sealing frame, a guide hole is provided on the guide plate, a slider is slidably mounted on the guide hole, a sealing block is mounted on the slider, a sealing spring is provided between the slider and the sealing frame, and a limit ring is provided on the slider to prevent the slider from detaching from the guide plate.

[0019] In one embodiment of this utility model, the slider is provided with a first fixing hole, the sealing frame is provided with a second fixing hole, and the two ends of the sealing spring are respectively passed through the first fixing hole and the second fixing hole.

[0020] The beneficial effects of this utility model are:

[0021] After the testing fixture of this utility model positions the housing, the pressing mechanism presses and positions the testing fixture and housing at the testing station. The driving component drives the sealing block on the sealing frame to connect and seal with the side hole of the housing, thereby limiting the position of the housing and the testing fixture, avoiding positional displacement due to leak detection during the testing process, which affects the testing accuracy, and preventing gas leakage from the port, making the testing more accurate. By connecting the airtight connector to the leak detection equipment, the airtightness of the housing can be quickly determined. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a shell airtightness testing device according to the present invention.

[0023] Figure 2 This is a schematic diagram of the testing fixture of this utility model.

[0024] Figure 3 This is a schematic diagram of the sealing mechanism of this utility model.

[0025] Figure 4 This is a schematic diagram of the sealing block of this utility model.

[0026] The following are the labeling instructions in the diagram: 1. Frame; 11. Detection frame; 12. Detection sensor; 2. Pressing mechanism; 21. Drive frame; 22. Pressure cylinder; 23. Drive plate; 24. Guide rod; 25. Spring; 3. Detection fixture; 31. Lower plate; 32. Base plate; 33. Limiting groove; 34. Positioning pin; 35. Sealing groove; 36. Lower sealing ring; 37. Pressure plate; 38. Upper sealing ring; 39. Bolt; 391. Airtight joint; 4. Housing; 5. Drive assembly; 51. Guide frame; 52. Guide cylinder; 53. Guide rod; 54. Sealing frame; 55. Linear bearing; 6. Sealing block; 61. Sealing sleeve; 62. Contouring surface; 63. Sealing spring; 64. Guide plate; 65. Guide hole; 66. Slider; 67. Limiting ring; 68. Second fixing hole. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0028] Reference Figure 1-4 As shown, a housing airtightness detection device includes:

[0029] Frame 1, on which a testing station is set;

[0030] The testing fixture 3 is set on the testing station. The testing fixture 3 is used to position the housing 4. The testing fixture 3 is provided with an airtight connector 391, which is connected to the housing 4 and is used to test the airtightness of the housing 4.

[0031] A sealing mechanism is provided on one side of the testing fixture 3. The sealing mechanism includes a driving component 5 and a sealing frame 54. The driving component 5 is drivenly connected to the sealing frame 54. The sealing frame 54 is provided with a sealing block 6 that matches the side hole of the housing 4. The driving component 5 is used to drive the sealing block 6 on the sealing frame 54 to connect and seal with the side hole of the housing 4.

[0032] The pressing mechanism 2 is located above the testing fixture 3. The pressing mechanism 2 is used to press and position the testing fixture 3 and the housing 4 at the testing station.

[0033] After the testing fixture 3 positions the housing 4, the pressing mechanism 2 presses and positions the testing fixture 3 and the housing 4 at the testing station. The driving component 5 drives the sealing block 6 on the sealing frame 54 to connect and seal with the side hole of the housing 4, thereby limiting the position of the housing 4 and the testing fixture 3, avoiding positional deviation due to leak detection during the testing process, which affects the testing accuracy, and preventing gas leakage from the port, making the testing more accurate. By connecting the airtight connector 391 to the leak detection equipment, the airtightness of the housing 4 can be quickly determined.

[0034] In one embodiment of this utility model, the pressing mechanism 2 includes a drive frame 21 and a booster cylinder 22. The drive frame 21 is mounted on the frame 1, and the booster cylinder 22 is mounted on the drive frame 21. The booster cylinder 22 is driven to connect with the drive plate 23. The booster cylinder 22 drives the drive plate 23 to move toward the detection fixture 3 to press and position the housing 4 at the detection station.

[0035] Specifically, the booster cylinder 22 drives the drive plate 23 to move toward the testing fixture 3 to press and position the housing 4 at the testing station, thereby limiting the position of the housing 4 and the testing fixture 3 and preventing positional shifts due to leak detection during the testing process from affecting the testing accuracy.

[0036] In one embodiment of this utility model, a guide rod 24 is provided between the drive frame 21 and the frame 1, and a guide sleeve matching the guide rod 24 is provided on the drive plate 23. The guide sleeve is slidably mounted on the guide rod 24, and a spring 25 is sleeved on the guide rod 24. When the booster cylinder 22 drives the drive plate 23 to move toward the detection fixture 3, the guide sleeve compresses the spring 25.

[0037] In one embodiment of this utility model, a detection component is further included. The detection component includes a detection frame 11, which is disposed between the drive frame 21 and the frame 1. A plurality of detection sensors 12 are disposed on the detection frame 11. The detection sensors 12 are disposed opposite to the drive plate 23. The position of the drive plate 23 is detected by the detection sensors 12, and the pressing position of the drive plate 23 on the detection fixture 3 is detected, so as to ensure the pressing effect of the drive plate 23 on the detection fixture 3.

[0038] In one embodiment of this utility model, the testing fixture 3 includes an upper plate and a lower plate 31. A base plate 32 is provided on the lower plate 31, and a lower sealing ring 36 is provided on the base plate 32. A pressure plate 37 is provided on the upper plate, and an upper sealing ring 38 is provided on the pressure plate 37. The pressure plate 37 and the base plate 32 are connected by bolts 39. An opening is provided on the pressure plate 37, and an airtight connector 391 is provided on the opening.

[0039] Specifically, the housing 4 is placed on the base plate 32 and positioned on the limiting groove 33. The housing 4 is positioned by the positioning pin 34. At the same time, the lower part of the housing 4 abuts against the lower sealing ring 36 on the base plate 32. Then, the upper sealing ring 38 on the pressure plate 37 is pressed against the upper part of the housing 4. The pressure plate 37 and the base plate 32 are connected by bolts 39. In this way, the upper and lower end faces of the housing 4 are sealed by the upper sealing ring 38 and the lower sealing ring 36. The airtight connector 391 set on the opening is connected to the leak detection equipment. The leak detection equipment is used to test the airtightness of the housing 4.

[0040] In one embodiment of this utility model, the base plate 32 is provided with a limiting groove 33 that matches the housing 4, and a positioning pin 34 is provided on the limiting groove 33, which can quickly position the housing 4 and facilitate the relative positional accuracy between the lower part of the housing 4 and the lower sealing ring 36, ensuring the sealing effect. The base plate 32 is provided with a sealing groove 35, and the lower sealing ring 36 is disposed in the sealing groove 35. The pressure plate 37 is provided with an installation groove, and the upper sealing ring 38 is engaged in the installation groove, reducing the assembly difficulty and improving the upper and lower fitting accuracy with the housing 4.

[0041] In one embodiment of the present invention, the drive assembly 5 includes a guide frame 51, a guide cylinder 52 is provided on the guide frame 51, the guide cylinder 52 is drivenly connected to the sealing frame 54, and a guide rod 53 is provided on the sealing frame 54, the guide rod 53 passing through the linear bearing 55 of the guide frame 51.

[0042] Specifically, the guide cylinder 52 drives the sealing block 6 on the sealing frame 54 to move toward the side hole of the housing 4, which can quickly press and seal the housing 4. The guide rod 53 passes through the linear bearing 55 of the guide frame 51, which can move and guide the sealing frame 54, improve the alignment accuracy with the side hole of the housing 4, and further ensure the sealing effect.

[0043] In one embodiment of this utility model, the sealing block 6 is provided with a contoured surface that matches the side hole of the housing 4, and a sealing sleeve 61 is provided on the contoured surface. The shape of the sealing sleeve 61 matches the contoured surface, and the sealing sleeve 61 is detachably connected to the sealing block 6. The sealing block 6 is provided with a contoured surface and a sealing sleeve 61. Under the drive of the guide cylinder 52, the side hole of the housing 4 is blocked and sealed to ensure the sealing effect of the housing 4. Long-term use may reduce the elasticity of the sealing sleeve 61. The sealing sleeve 61 is detachably connected to the sealing block 6, which makes it easy to replace the sealing sleeve 61 and reduce the cost of use.

[0044] In one embodiment of this utility model, a guide plate is provided on the sealing frame 54, a guide hole is provided on the guide plate, a slider is slidably mounted on the guide hole, a sealing block 6 is mounted on the slider, a sealing spring 25 is provided between the slider and the sealing frame 54, and a limit ring is provided on the slider to prevent the slider from detaching from the guide plate.

[0045] Specifically, when the sealing block 6 is pushed to seal the side hole of the housing 4, it will compress the sealing spring 25. Under the reaction force of the sealing spring 25, the sealing block 6 will always seal the housing 4, avoiding collisions that could damage the housing 4 or the sealing sleeve 61.

[0046] In one embodiment of this utility model, the slider is provided with a first fixing hole, the sealing frame 54 is provided with a second fixing hole, and the two ends of the sealing spring 25 are respectively passed through the first fixing hole and the second fixing hole. The first fixing hole and the second fixing hole form an installation channel for the sealing spring 25. At the same time, under the support of the spring 25, it can also play a certain guiding role for the slider, reducing the assembly difficulty.

[0047] Usage process

[0048] The housing 4 is placed on the base plate 32 and positioned on the limiting groove 33. The housing 4 is positioned by the positioning pin 34. Simultaneously, the lower part of the housing 4 abuts against the lower sealing ring 36 on the base plate 32. Then, the upper sealing ring 38 on the pressure plate 37 is pressed tightly against the upper part of the housing 4. The pressure plate 37 is connected to the base plate 32 by bolts 39. This seals the upper and lower end faces of the housing 4 through the upper sealing ring 38 and the lower sealing ring 36. The guide cylinder 52 drives the sealing block 6 on the sealing frame 54 to move towards the side hole of the housing 4. Because the sealing block 6 has a contoured surface and a sealing sleeve 61, it moves towards the side hole of the housing 4 under the action of the guide cylinder 52. When the side holes of the housing 4 are sealed, the sealing block 6 is pushed to seal the side holes of the housing 4, which will compress the sealing spring 25. Under the reaction force of the sealing spring 25, the sealing block 6 is always sealed to the housing 4, avoiding collisions that could damage the housing 4 or the sealing sleeve 61. The booster cylinder 22 drives the drive plate 23 to move toward the testing fixture 3 to press and position the housing 4 at the testing station, thereby limiting the housing 4 and the testing fixture 3 to avoid positional displacement during the testing process that could affect the testing accuracy. The airtight connector 391 set on the opening is connected to the leak testing equipment, and the airtightness of the housing 4 is tested by the leak testing equipment.

[0049] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A shell airtightness detection device, characterized in that, include: The frame has testing stations installed on it; A testing fixture is provided at the testing station, and the testing fixture is used to position the housing; A sealing mechanism is disposed on one side of the testing fixture. The sealing mechanism includes a driving component and a sealing frame. The driving component is drivenly connected to the sealing frame. The sealing frame is provided with a sealing block that matches the side hole of the housing. The driving component is used to drive the sealing block on the sealing frame to connect and seal with the side hole of the housing. A pressing mechanism is disposed above the testing fixture, and the pressing mechanism is used to press and position the testing fixture and the housing at the testing station.

2. The shell airtightness detection device as described in claim 1, characterized in that, The pressing mechanism includes a drive frame and a pressure cylinder. The drive frame is mounted on the machine frame, and the pressure cylinder is mounted on the drive frame. The pressure cylinder is driven by the drive plate. The pressure cylinder drives the drive plate to move toward the testing fixture to press and position the housing at the testing station.

3. The shell airtightness detection device as described in claim 2, characterized in that, A guide rod is provided between the drive frame and the machine frame. A guide sleeve matching the guide rod is provided on the drive plate. The guide sleeve slides on the guide rod. A spring is sleeved on the guide rod. When the booster cylinder drives the drive plate to move toward the testing fixture, the guide sleeve compresses the spring.

4. The shell airtightness testing device as described in claim 2, characterized in that, It also includes a detection component, which includes a detection frame disposed between the drive frame and the machine frame. The detection frame is provided with a plurality of detection sensors, which are disposed opposite to the drive board.

5. The shell airtightness testing device as described in claim 1, characterized in that, The testing fixture includes an upper plate and a lower plate. A base plate is provided on the lower plate, and a lower sealing ring is provided on the base plate. A pressure plate is provided on the upper plate, and an upper sealing ring is provided on the pressure plate. The pressure plate and the base plate are connected by bolts.

6. The shell airtightness testing device as described in claim 5, characterized in that, The base plate is provided with a limiting groove that matches the housing, and a positioning pin is provided on the limiting groove. The base plate is provided with a sealing groove, and the lower sealing ring is disposed in the sealing groove. The pressure plate is provided with an installation groove, and the upper sealing ring is engaged in the installation groove.

7. The shell airtightness testing device as described in claim 1, characterized in that, The drive assembly includes a guide frame, on which a guide cylinder is mounted. The guide cylinder is drivenly connected to the sealing frame. A guide rod is mounted on the sealing frame and passes through a linear bearing of the guide frame.

8. The shell airtightness detection device as described in claim 1, characterized in that, The sealing block is provided with a contoured surface that matches the side hole of the housing. A sealing sleeve is provided on the contoured surface. The shape of the sealing sleeve matches the contoured surface. The sealing sleeve is detachably connected to the sealing block.

9. The shell airtightness testing device as described in claim 1, characterized in that, The sealing frame is provided with a guide plate, the guide plate is provided with a guide hole, a slider is slidably mounted on the guide hole, the sealing block is mounted on the slider, a sealing spring is provided between the slider and the sealing frame, and a limit ring is provided on the slider to prevent the slider from detaching from the guide plate.

10. The shell airtightness detection device as described in claim 9, characterized in that, The slider is provided with a first fixing hole, the sealing frame is provided with a second fixing hole, and the two ends of the sealing spring are respectively passed through the first fixing hole and the second fixing hole.

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