Air tightness detection device and equipment
By incorporating a blocking mechanism and a pressurization detection mechanism into the airtightness testing device, the problem of gas escaping from ports other than the inflation port is solved, thus achieving accurate airtightness testing.
Patent Information
- Application Number
- CN202520017916.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-06
AI Technical Summary
When existing airtightness testing devices are being inflated, the internal gas of the workpiece under test can easily escape from the air inlet other than the inflation port, leading to inaccurate testing.
An obstruction mechanism is installed in the airtightness testing device to block other air ports on the workpiece to be tested, and the workpiece is pressurized by a pressure testing mechanism to ensure that gas does not escape from other air ports.
It achieves accurate airtightness detection, prevents gas from escaping from other vents, and improves the accuracy of the detection.
Smart Images
Figure CN223727353U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to airtightness detection related technical field especially, it is related to airtightness detection device and equipment. BACKGROUND
[0002] The water tank of the sweeper is an indispensable part of the sweeper, and the water tank of the sweeper needs to be detected for airtightness, that is, sealing, to avoid water leakage of the water tank of the sweeper.
[0003] In the prior art, although there is airtightness detection, when detecting the gas port other than the inflation port, only the mechanism of the inflation port is provided, and the mechanism for plugging the gas port is not provided, so that when inflating, the internal gas of the workpiece to be detected will be discharged from other gas ports, resulting in inaccurate airtightness detection of the workpiece to be detected. UTILITY MODEL CONTENTS
[0004] In order to solve the above problems, the utility model provides airtightness detection device and equipment. By setting the pressurization detection mechanism, the workpiece to be detected is pressurized, and the blocking mechanism is also provided to block other gas ports, so as to prevent the gas from flowing out of other gas ports during inflation, and to cause the problem of airtightness detection failure.
[0005] The utility model contents are realized by the following technical solutions:
[0006] In the first aspect, the utility model provides airtightness detection device, including:
[0007] The test rack includes a base assembly and a pressing assembly, the pressing assembly is arranged above the base assembly, and the base assembly is provided with a workpiece placing table for placing the workpiece to be detected;
[0008] The blocking mechanism is arranged on the base assembly or the pressing assembly and located on the side of the workpiece placing table, and is used for plugging the gas port of the workpiece to be detected to block the internal air cavity of the workpiece from the outside;
[0009] And the pressurization detection mechanism is arranged on the test rack or the blocking mechanism and is adjacent to the work placing table, and is used for inflating the workpiece to be detected and detecting the airtightness.
[0010] The utility model discloses a gas tightness detection device, which comprises a test rack, a workpiece placing table, a blocking mechanism and a pressurized detection mechanism.
[0011] In some embodiments, the blocking mechanism comprises a first blocking component, a second blocking component, a third blocking component and a fourth blocking component.
[0012] The first blocking component and the second blocking component are respectively arranged on the adjacent two sides of the workpiece placing table, and the third blocking component and the fourth blocking component are arranged above the workpiece placing table.
[0013] The first blocking component, the second blocking component, the third blocking component and the fourth blocking component are arranged to detect the gas ports of the workpieces in four different positions, so as to block the gas ports of the workpieces in a targeted manner.
[0014] In some embodiments, the third blocking component and the fourth blocking component are arranged on the lower pressing component.
[0015] The third blocking component and the fourth blocking component are arranged on the lower pressing component, so that the third blocking component and the fourth blocking component can press and block the gas ports.
[0016] In some embodiments, the first blocking component, the second blocking component, the third blocking component and the fourth blocking component each comprise a blocking piece and a push cylinder, the blocking piece is arranged on the driving end of the push cylinder, so that the blocking piece blocks the gas port of the workpiece or moves away from the gas port of the workpiece.
[0017] The first blocking component, the second blocking component, the third blocking component and the fourth blocking component each comprise a blocking piece and a push cylinder, and the push cylinder pushes the blocking piece, so as to realize automatic blocking.
[0018] In some embodiments, the blocking piece is provided with a first air pressure detection piece, the first air pressure detection piece is arranged in the blocking piece or on the side of the blocking piece, so as to detect the internal air pressure of the workpiece.
[0019] The first air pressure detection member is arranged in the blocking member or on the side of the blocking member, and is driven to abut or extend into the cavity of the workpiece to be detected to detect the internal air pressure of the workpiece to be detected.
[0020] In some embodiments, the pressurization detection mechanism is provided with a pressurization port, and the workpiece to be detected is provided with a pressurization port, and the pressurization detection mechanism pressurizes the workpiece to be detected through the pressurization port.
[0021] The pressurization detection mechanism is provided with a pressurization port, and the workpiece to be detected is provided with a pressurization port, so that the pressurization detection mechanism can pressurize the inside of the workpiece to be detected through the pressurization port to detect the air tightness.
[0022] In some embodiments, the pressurization detection mechanism further comprises a second air pressure detection member, and the second air pressure detection member comprises a Hall element to detect the change of air pressure through the Hall element.
[0023] The pressurization detection mechanism further comprises a second air pressure detection member, and the second air pressure detection member can be a Hall element to detect the internal air pressure of the workpiece to be detected and the presence of the internal magnet through the Hall element.
[0024] In some embodiments, the test rack is further provided with a scanning mechanism, and the scanning mechanism is fixed on the upper part of the test rack, and the scanning port of the scanning mechanism is arranged towards the workpiece placing table, so that the scanning mechanism can obtain the scanning information of the workpiece to be detected.
[0025] The test rack is further provided with a scanning mechanism, and the scanning mechanism is fixed on the upper part of the test rack, and the scanning port of the scanning mechanism is arranged towards the workpiece placing table, so that the scanning mechanism can obtain the scanning information of the workpiece to be detected.
[0026] In some embodiments, the base assembly is further provided with a top fixing table, and the top fixing table is arranged above the workpiece placing table through a fixing column to fix the top of the workpiece to be detected, and the top fixing table is provided with a clamping groove, and a plurality of installation slopes are arranged on one side of the clamping groove, and an installation platform is arranged on the opposite side to adapt to the structure of the top of the workpiece to be detected, so that the top of the workpiece to be detected is clamped in the clamping groove.
[0027] The top fixing table is arranged to fix the top structure of the workpiece to be detected.
[0028] In a second aspect, the utility model provides a kind of air tightness detection equipment, including as the air tightness detection device of first aspect, pressure supply device and data receiving table;Pressure supply device provides air pressure for pressurization detection mechanism, to pressurize inside the workpiece to be detected, and data receiving table receives the back data of pressurization detection mechanism.
[0029] The utility model discloses a kind of air tightness detection device and equipment, and the beneficial effects are:
[0030] By setting the test rack in the air tightness detection device, including the base assembly and the pressing assembly, the pressing assembly is set above the base assembly, the base assembly is provided with a workpiece placing table for placing the workpiece to be tested; and the blocking mechanism is set on the base assembly or the pressing assembly and located at the side of the workpiece placing table, used for blocking the air port of the workpiece to be tested to block the internal air cavity of the workpiece from the outside; and the pressure detection mechanism is set on the test rack or the blocking mechanism and is adjacent to the work placing table, used for air charging and air tightness detection of the workpiece to be tested. By setting the pressure detection mechanism to pressurize the workpiece to be tested, and setting the blocking mechanism to block other air ports of the workpiece to be tested, the internal air cavity is blocked from the outside, so that the gas is prevented from being discharged from other air ports during air charging due to the existence of other air ports. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 It is a perspective view of the air tightness detection device of the utility model Figure 1 ;
[0032] Figure 2 It is a part of the utility model Figure 1 enlarged view
[0033] Figure 3 It is a perspective view of the air tightness detection device of the utility model Figure 2 ;
[0034] Figure 4 It is a perspective view of the blocking mechanism of the air tightness detection device of the utility model
[0035] Figure 5 It is a perspective view of the air tightness detection device of the utility model Figure 3 ;
[0036] Figure 6 It is a top fixing table of the air tightness detection device of the utility model
[0037] Figure 7 It is a frame diagram of the air tightness detection device of the utility model
[0038] Markings in the figure:
[0039] 1, test rack; 11, pressing assembly; 12, base assembly; 121, workpiece placing table; 122, fixed column; 123, top fixing table; 1231, clamping groove; 1232, installation slope; 1233, installation platform;
[0040] 2, blocking mechanism; 21, first blocking assembly; 22, second blocking assembly; 23, third blocking assembly; 24, fourth blocking assembly; 25, blocking piece; 251, first air pressure detection piece; 26, push cylinder;
[0041] 3. Pressure testing mechanism; 31. Pressure port; 32. Second air pressure testing component;
[0042] 4. Scanning mechanism. Detailed Implementation
[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.
[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0045] Example 1:
[0046] like Figure 1 As shown, this embodiment proposes an airtightness detection device, comprising:
[0047] The test frame 1 includes a base assembly 12 and a pressing assembly 11. The pressing assembly 11 is disposed above the base assembly 12, and the base assembly 12 is provided with a workpiece placement stage 121 for placing the workpiece to be tested.
[0048] The blocking mechanism 2 is disposed on the base assembly 12 or the pressing assembly 11 and located around the workpiece placement table 121, and is used to block the air port of the workpiece to be tested so as to isolate the internal air cavity of the workpiece from the outside.
[0049] And a pressure testing mechanism 3, which is set on the test frame 1 or the blocking mechanism 2 and adjacent to the work platform, is used for the inflation and airtightness testing of the workpiece to be tested.
[0050] Specifically, the pressing assembly 11 can be driven to press down by, for example, a pneumatic cylinder, the base assembly 12 is provided with a work placement table, a metal frame can be arranged on the side of the base assembly 12, the metal frame is fixed with the pressing assembly 11 above, and a workpiece placement table 121 is arranged directly below the pressing assembly 11, further, a fixed platform can be arranged in the middle of the metal frame to fix the top of the workpiece to be tested, so as to avoid shaking of the workpiece to be tested during testing. The blocking mechanism 2 is also provided, a plurality of blocking mechanisms 2 are arranged on the base assembly 12 or the pressing assembly 11 and located on the side of the workpiece placement table 121, so as to block the gas ports arranged on the outer side of the workpiece to be tested, so that the internal air cavity is isolated from the outside during gas detection. The pressurized detection mechanism 3 is also provided, the pressurized mechanism is arranged on the test rack 1 or adjacent to the blocking mechanism 2, for air charging and air tightness detection of the workpiece to be tested, the pressurized detection mechanism 3 is pressurized from the outside to the inside, and air tightness detection is performed at the same time, so as to avoid air leakage during air charging.
[0051] By arranging the test rack 1 in the air tightness detection device, the base assembly 12 and the pressing assembly 11 are arranged, the pressing assembly 11 is arranged above the base assembly 12, the base assembly 12 is provided with a workpiece placement table 121 for placing the workpiece to be tested, the blocking mechanism 2 is arranged on the base assembly 12 or the pressing assembly 11 and located on the side of the workpiece placement table 121, for blocking the gas ports of the workpiece to be tested to isolate the internal air cavity of the workpiece from the outside, and the pressurized detection mechanism 3 is arranged on the test rack 1 or the blocking mechanism 2 and adjacent to the work placement table, for air charging and air tightness detection of the workpiece to be tested. By arranging the pressurized detection mechanism 3 to pressurize the workpiece to be tested from the inside, and arranging the blocking mechanism 2 to block other gas ports of the workpiece to be tested, the internal air cavity is isolated from the outside, so as to avoid air leakage from other gas ports during air charging due to the existence of other gas ports.
[0052] Embodiment 2
[0053] As shown in Figures 2-6 , the structure proposed in Embodiment 1 is further optimized and described in this embodiment:
[0054] In some embodiments, the blocking mechanism 2 includes a first blocking assembly 21, a second blocking assembly 22, a third blocking assembly 23, and a fourth blocking assembly 24.
[0055] The first blocking assembly 21 and the second blocking assembly 22 are arranged on the adjacent two sides of the workpiece placement table 121, and the third blocking assembly 23 and the fourth blocking assembly 24 are arranged above the workpiece placement table 121.
[0056] Specifically, the blocking mechanism 2 comprises a first blocking assembly 21, a second blocking assembly 22, a third blocking assembly 23 and a fourth blocking assembly 24; when the workpiece to be tested is placed on the workpiece placing table 121, the first blocking assembly 21 and the second blocking assembly 22 block the air port on the side of the workpiece to be tested. In some more specific embodiments, the water tank of the workpiece to be tested is rectangular, and the first blocking assembly 21 and the second blocking assembly 22 are usually arranged on adjacent measuring surfaces, while the third blocking assembly 23 and the fourth blocking assembly 24 are arranged on the top and are connected to the air port on the top of the workpiece to be tested.
[0057] By arranging the first blocking assembly 21, the second blocking assembly 22, the third blocking assembly 23 and the fourth blocking assembly 24, the air ports of the workpiece to be tested in four different positions can be detected, so that the air ports of the workpiece to be tested can be blocked in a targeted manner.
[0058] In some embodiments, the third blocking assembly 23 and the fourth blocking assembly 24 are arranged on the pressing assembly 11.
[0059] Specifically, the third blocking assembly 23 and the fourth blocking assembly 24 are arranged on the pressing assembly 11, and by pressing the pressing assembly 11, the third blocking assembly 23 and the fourth blocking assembly 24 can block the air port on the top of the workpiece to be tested by descending, and the pressing assembly 11 can separate the blocking, which can avoid using a driving member for each of the third blocking assembly 23 and the fourth blocking assembly 24 to block, thereby reducing the use of driving assemblies, and the pressing mechanism can also assist in fixing the workpiece to be tested.
[0060] By arranging the third blocking assembly 23 and the fourth blocking assembly 24 on the pressing assembly 11, the third blocking assembly 23 and the fourth blocking assembly 24 can press and block the air port.
[0061] In some embodiments, the first blocking assembly 21, the second blocking assembly 22, the third blocking assembly 23 and the fourth blocking assembly 24 each comprise a blocking piece 25 and a pushing cylinder 26, the blocking piece 25 is arranged on the driving end of the pushing cylinder 26, so that the blocking piece 25 can block or move away from the air port of the workpiece to be tested.
[0062] Specifically, the first blocking assembly 21, the second blocking assembly 22, the third blocking assembly 23 and the fourth blocking assembly 24 are automatically blocked by the blocking piece 25 and the pushing cylinder 26, the blocking piece 25 is pushed by the pushing cylinder 26 to block, the blocking piece 25 can be provided with a slot consistent with the shape of the air port to be inserted on the air port to achieve the blocking effect, and the pushing cylinder 26 can realize the action of blocking and moving away from the air port.
[0063] The first blocking assembly 21, the second blocking assembly 22, the third blocking assembly 23 and the fourth blocking assembly 24 each include a blocking piece 25 and a pushing cylinder 26, and the pushing cylinder 26 pushes the blocking piece 25 to realize automatic blocking.
[0064] In some embodiments, the blocking piece 25 is provided with a first air pressure detection piece 251, which is arranged in the blocking piece 25 or arranged on the side of the blocking piece 25 to detect the internal air pressure of the workpiece to be detected.
[0065] Specifically, the first air pressure detection piece 251 can be arranged in the blocking piece 25, more specifically, in the insertion slot of the blocking piece 25 and the air port, and when the pushing cylinder 26 pushes the blocking piece 25, the first air pressure detection piece 251 can be deep into the workpiece to be detected to realize air pressure detection. Alternatively, the first air pressure detection piece 251 can be arranged on the side of the blocking piece 25, and the pushing cylinder 26 pushes the first air pressure detection piece 251 to detect the air pressure. The first air pressure detection piece 251 can be an air pressure detection probe, an air pressure detection sensor, or a Hall element.
[0066] Optionally, in some other embodiments, an air pressure film can be arranged at the air port of the workpiece to be detected or on the side of the air port, and the first air pressure detection piece 251 can be arranged as a pressure sensor and detect whether the air pressure film is protruded during detection to confirm the internal air pressure change through the degree of protrusion.
[0067] The blocking piece 25 is provided with the first air pressure detection piece 251, which is arranged in the blocking piece 25 or arranged on the side of the blocking piece 25 to drive the blocking piece 25 to abut or extend into the internal cavity of the workpiece to be detected to detect the internal air pressure of the workpiece to be detected. The first air pressure detection piece 251 arranged at different positions
[0068] can realize detection of different positions in the cavity of the workpiece to be detected, so that the detection is more stereoscopic.
[0069] In some embodiments, the pressure detection mechanism 3 is provided with a pressurizing port 31, and the workpiece to be detected is provided with a pressurizing port, and the pressure detection mechanism 3 pressurizes the workpiece to be detected through the pressurizing port.
[0070] Specifically, the pressure detection mechanism 3 is provided with the pressurizing port 31, and the pressurizing port 31 pressurizes the pressurizing port to realize internal cavity pressurization of the workpiece to be detected, and further, a side wall can be arranged on the side of the pressurizing port to improve the air tightness of the pressurizing port.
[0071] The pressurizing port 31 is arranged, and the pressurizing port is arranged on the workpiece to be detected, so that the pressure detection mechanism 3 can pressurize the internal part of the workpiece to be detected from the pressurizing port to detect the air tightness.
[0072] In some embodiments, the pressure detection mechanism 3 further comprises a second air pressure detection member 32, which comprises a Hall element to detect changes in air pressure through the Hall element.
[0073] Specifically, the second air pressure detection member 32 comprises a Hall element, which can be arranged inside the Hall member that can sense different potentials through air pressure, and a Hall sensing member is arranged on the pressure detection mechanism 3 to sense the potential of the Hall member and return data to the terminal to achieve the function of air pressure detection.
[0074] The pressure detection mechanism 3 further comprises a second air pressure detection member 32, which can be arranged as a Hall element to detect the internal air pressure of the test element and the presence of the internal magnet through the Hall element.
[0075] In some embodiments, the test rack 1 is further provided with a scanning mechanism 4 fixed on the upper part of the test rack 1, and the scanning port of the scanning mechanism 4 faces the test workpiece placement table 121, so that the scanning mechanism 4 can obtain the scanning information of the test workpiece.
[0076] Specifically, the scanning mechanism 4 is arranged on the upper part of the test rack 1, and can also be arranged on the lower pressing assembly 11 to follow the lower pressing. The scanning port faces the workpiece placement table 121 of the test workpiece, and a barcode is also arranged on the test workpiece to realize scanning to obtain the information of the test workpiece.
[0077] The test rack 1 is further provided with a scanning mechanism 4 fixed on the upper part of the test rack 1, and the scanning port of the scanning mechanism 4 faces the test workpiece placement table 121, so that the scanning mechanism 4 can obtain the information of the test workpiece by scanning the barcode on the workpiece.
[0078] In some embodiments, the base assembly 12 is further provided with a top fixing table 123 arranged above the workpiece placement table 121 through the fixing column 122 to fix the top of the test workpiece. The top fixing table 123 is provided with a clamping groove 1231, one side of which is provided with a plurality of installation slopes 1232, and the opposite side is provided with an installation platform 1233 to adapt to the structure of the top of the test workpiece, so that the top of the test workpiece is clamped in the clamping groove 1231.
[0079] Specifically, the top fixing table 123 can be arranged as a rectangle, and the entire top fixing table 123 is supported and lifted by the fixing column 122 at the four corners of the rectangle. The clamping groove 1231 is arranged on the top fixing table 123, the test workpiece is arranged in the clamping groove 1231, and the top fixing table 123 fixes the top of the test workpiece. The installation slope 1232 and the installation platform 1233 are arranged to clamp and limit the structure of the top of the test workpiece, so as to avoid the movement of the top of the test workpiece during fixing.
[0080] By setting the top fixing table 123, the top structure of the workpiece to be measured is fixed.
[0081] Embodiment 3:
[0082] As Figure 7 shown, the embodiment provides a gas tightness detection device, which comprises the gas tightness detection device according to the first aspect, a pressure supply device and a data receiving table; the pressure supply device provides gas pressure for the pressurization detection mechanism 3 to pressurize the inside of the workpiece to be measured, and the data receiving table receives the feedback data of the pressurization detection mechanism 3.
[0083] Specifically, the pressure supply device provides gas pressure for the pressurization detection mechanism 3, and the pressure supply device is connected to the pressurization port 31 in a manner of supplying pressure, so that the pressurization port 31 supplies pressure to the pressurization port. And by setting the data receiving table, the feedback data of the pressurization detection mechanism 3 is received for real-time monitoring to determine whether the workpiece to be measured has the problem of air leakage. Further, the data receiving table receives the first gas pressure detection piece 251 and the second gas pressure detection piece 32, and detects different positions in the cavity of the workpiece to be measured through the first gas pressure detection piece 251 and the second gas pressure detection piece 32, so as to feedback the gas pressure condition of the whole inside of the workpiece to be measured in a stereoscopic manner.
[0084] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0085] In the description of the present application, it should be pointed out that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, structure and operation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for description, and cannot be understood as indicating or implying relative importance.
[0086] Furthermore, terms such as "horizontal," "vertical," "up," "down," "top," "bottom," "side," "end," "front," "back," "upper," "lower," "horizontal," "vertical," and the like are used herein for convenience, are not intended to be limiting, and are not intended to connote orientation of an article. It is to be understood that these terms, when used in conjunction with an article, are intended to connote the orientation of the article as shown in the drawings, unless otherwise stated or indicated. For example, "horizontal" refers to a direction that is more horizontal than "vertical," and not necessarily a complete horizontal direction.
[0087] In the present application, unless otherwise clearly specified and limited, the first feature above or below the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0088] Although the description of the present application is combined with the above specific embodiments, it is obvious that many substitutions, modifications and changes can be made according to the above content for those skilled in the art. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. An airtightness testing device, characterized in that, include: The test frame (1) includes a base assembly (12) and a pressing assembly (11). The pressing assembly (11) is disposed above the base assembly (12). The base assembly (12) is provided with a workpiece placement stage (121) for placing the workpiece to be tested. The blocking mechanism (2) is provided on the base assembly (12) or the pressing assembly (11) and located around the workpiece placement table (121) to block the air port of the workpiece to be tested so that the internal air cavity of the workpiece is isolated from the outside. And a pressure testing mechanism (3), which is set on the test frame (1) or the blocking mechanism (2) and adjacent to the work platform, for the inflation and airtightness testing of the workpiece to be tested.
2. The airtightness testing device according to claim 1, characterized in that, The blocking mechanism (2) includes a first blocking component (21), a second blocking component (22), a third blocking component (23), and a fourth blocking component (24). The first blocking component (21) and the second blocking component (22) are respectively disposed on the adjacent two sides of the workpiece placement platform (121), and the third blocking component (23) and the fourth blocking component (24) are disposed above the workpiece placement platform (121).
3. The airtightness testing device according to claim 2, characterized in that, The third blocking component (23) and the fourth blocking component (24) are disposed on the pressing component (11).
4. The airtightness testing device according to claim 2, characterized in that, The first blocking component (21), the second blocking component (22), the third blocking component (23) and the fourth blocking component (24) all include a blocking component (25) and a pushing cylinder (26). The blocking component (25) is disposed on the driving end of the pushing cylinder (26) so that the blocking component (25) blocks the air port of the workpiece to be tested, or moves away from the air port of the workpiece to be tested.
5. The airtightness testing device according to claim 4, characterized in that, The blocking component (25) is provided with a first air pressure detection component (251), which is located inside the blocking component (25) or on the periphery of the blocking component (25) to detect the internal air pressure of the workpiece to be tested.
6. The airtightness testing device according to claim 1, characterized in that, The pressure testing mechanism (3) is provided with a pressure port (31), and the workpiece to be tested is provided with a pressure port. The pressure testing mechanism (3) applies pressure to the workpiece to be tested through the pressure port.
7. The airtightness testing device according to claim 1, characterized in that, The pressurization detection mechanism (3) further includes a second air pressure detection element (32), which includes a Hall element to detect changes in air pressure.
8. The airtightness testing device according to claim 1, characterized in that, The test frame (1) is also provided with a scanning mechanism (4), which is fixed on the upper part of the test frame (1). The scanning port of the scanning mechanism (4) is set facing the workpiece placement stage (121) so that the scanning mechanism (4) can obtain the scanning information of the workpiece to be tested.
9. The airtightness testing device according to claim 1, characterized in that, The base assembly (12) is also provided with a top fixing platform (123). The top fixing platform (123) is set above the workpiece placement platform (121) by a fixing column (122) to fix the top of the workpiece to be tested. The top fixing platform (123) is provided with a snap-fit groove (1231). Multiple installation ramps (1232) are provided on one side of the snap-fit groove (1231), and an installation platform (1233) is provided on the opposite side to adapt to the structure of the top of the workpiece to be tested, so that the top of the workpiece to be tested is snapped into the snap-fit groove (1231).
10. An airtightness testing device, characterized in that, It includes an airtightness testing device, a pressure supply device, and a data receiving station as described in any one of claims 1-9; the pressure supply device provides air pressure to the pressure testing mechanism (3) to pressurize the inside of the workpiece to be tested, and the data receiving station receives the data transmitted back from the pressure testing mechanism (3).