Product air tightness testing device

Abstract

The utility model provides a product airtightness testing device. The product airtightness testing device comprises a leak detector, a bottom plate, a sealing tool arranged on the bottom plate, a lateral positioning electric cylinder and a lower piezoelectric cylinder, wherein the lateral positioning electric cylinder and the lower piezoelectric cylinder are used for positioning the sealing tool; the sealing tool comprises a sealing base and a sealing cover plate matched with the sealing base. The lateral positioning electric cylinder is used for positioning the sealing base, and the lower piezoelectric cylinder is used for driving the sealing cover plate to be in press fit with the sealing base; the sealing base and the sealing cover plate are matched to form a sealing cavity for accommodating a product to be detected; the leak detector is communicated with the sealing cavity and is used for detecting the sealing performance of the to-be-detected product in the sealing cavity. According to the utility model, the air tightness test of products with various structures and shapes can be realized.

Description

Technical Field

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

[0002] More and more electronic products need to undergo waterproof testing. In order to save testing costs and improve testing efficiency, air sources are usually used instead of water sources to test the product's sealing performance. That is, air tightness testing is used to verify the sealing performance between the product's casing and cover and other structural components.

[0003] However, since the air inlets of different products are not regularly shaped, ordinary planar sealing airtightness testing devices cannot meet the diverse airtightness testing needs of products, and the accuracy of the test cannot be guaranteed; while setting up a corresponding testing device according to the shape of the product's air inlet results in low versatility of the testing fixture and high testing costs. Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to provide a product airtightness testing device to solve the problems of low universality of existing product airtightness testing and inability to meet the testing needs of different products and air inlets of different shapes.

[0005] The product airtightness testing device provided by this utility model includes a leak detector, a base plate, a sealing fixture mounted on the base plate, a lateral positioning electric cylinder and a downward pressing electric cylinder for positioning the sealing fixture; wherein...

[0006] The sealing fixture includes a sealing base and a sealing cover plate adapted to the sealing base;

[0007] The lateral positioning electric cylinder is used to position the sealing base, and the downward pressing electric cylinder is used to drive the sealing cover plate to press against the sealing base;

[0008] The sealing base and the sealing cover plate cooperate to form a sealed cavity for accommodating the product to be tested;

[0009] The leak detector is connected to the sealed cavity and is used to detect the sealing performance of the product to be tested inside the sealed cavity.

[0010] In addition, an optional structural feature is that a linear track is provided on the base plate, and a track limiting groove adapted to the linear track is provided at the bottom of the sealed base.

[0011] The lateral positioning electric cylinder is used to push the sealing base to move on the linear track.

[0012] In addition, an optional structural feature is that a positioning component is provided on the linear track; wherein,

[0013] The positioning component is used to limit the sealing base so that the sealing base is located directly below the sealing cover.

[0014] In addition, optional structural features include a fixing post disposed on the base plate and a limiting plate disposed on the fixing post; wherein,

[0015] The downward pressing electric cylinder is located on the upper side of the limiting plate, and the sealing cover is located on the lower side of the limiting plate. The downward pressing electric cylinder is used to drive the sealing cover to move up and down.

[0016] In addition, an optional structural feature is that a pressure sensor and a pressure output display are provided on the sealing cover; wherein,

[0017] The pressure sensor is used to detect the pressing force of the sealing cover plate on the sealing base plate;

[0018] The pressure output display is used to display the pressure force.

[0019] Furthermore, an optional structural feature is that the sealed cavity is provided with at least one; wherein,

[0020] At least one inflation connector is provided on the sealing cover plate, and the inflation connector is connected to the corresponding sealing cavity.

[0021] In addition, an optional structural feature is that it also includes a standard pressure vessel; wherein,

[0022] One end of the standard pressure tank is connected to the leak detector, and the other end is connected to the inflation connector;

[0023] The leak detector is used to fill the standard pressure tank with air, and to fill the sealed cavity with air after the air pressure in the standard pressure tank has stabilized.

[0024] In addition, an optional structural feature is that the number of products to be tested corresponds to the number of the inflation connector, the standard pressure tank, and the sealed cavity.

[0025] In addition, an optional structural feature is that a product limiting groove and a detection sensor are provided on the sealing base plate; wherein,

[0026] The product to be tested is placed in the product limiting groove;

[0027] The detection sensor is used to detect whether the product to be detected is in place.

[0028] In addition, an optional structural feature is that a sealing gasket is provided on the sealing base or the sealing cover.

[0029] Using the aforementioned product airtightness testing device, a sealed cavity is formed by the cooperation of the sealing base and the sealing cover to accommodate the product to be tested. The leak detector is connected to the sealed cavity to test the sealing performance of the product to be tested in the sealed cavity. The test is simple and convenient and can meet the airtightness testing needs of different types of products and products with different shapes of air inlets. Attached Figure Description

[0030] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0031] Figure 1 This is a schematic diagram of the overall structure of the product airtightness testing device according to an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of the separated structure of the sealing fixture according to an embodiment of the present utility model;

[0033] Figure 3 This is a schematic diagram of the pressing structure of the sealing tool according to an embodiment of the present utility model.

[0034] The reference numerals in the above figures include: 1. Leak detector; 2. Standard pressure tank; 3. Pressure sensor; 4. Downward-pressing electric cylinder; 5. Sealing fixture; 6. Lateral positioning electric cylinder; 7. Support column; 8. Base plate; 9. Pressure output display; 51. Sealing cover plate; 511. Sealing cavity; 52. Sealing base plate; 53. Detection sensor; 10. Inflation connector; 11. Product to be tested.

[0035] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0036] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0037] In the following description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 are not intended to 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.

[0038] To provide a detailed description of the product airtightness testing device of this utility model, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0039] Figures 1 to 3 Schematic structures of the product airtightness testing device and sealing fixture according to embodiments of the present invention are shown respectively.

[0040] like Figures 1 to 3 As shown in the figure, the product airtightness testing device of this utility model includes a leak detector 1, a base plate 8, a sealing fixture 5 disposed on the base plate 8, a lateral positioning electric cylinder 6 and a pressing electric cylinder 4 for positioning the sealing fixture 5; wherein, the sealing fixture 5 further includes a sealing base and a sealing cover plate 51 adapted to the sealing base, the lateral positioning electric cylinder 6 is used to laterally position the sealing base, and the pressing electric cylinder 4 is used to drive the sealing cover plate 51 to press against the sealed base after it is in place, so that the sealing base and the sealing cover plate 51 cooperate to form a sealed cavity 511 for accommodating the product 11 to be tested, the leak detector 1 is connected to the sealed cavity 511, and the leak detector 1 detects the sealing performance of the product 11 to be tested in the sealed cavity 511. The sealed cavity 511 can be applied to the airtightness testing needs of products of various types or shapes, the device has strong versatility and high detection accuracy.

[0041] Specifically, to facilitate the loading and unloading of the product 11 to be tested, a support column 7 is provided below the base plate 8, and a linear track is provided on the base plate 8. A track limiting groove adapted to the linear track is provided at the bottom of the sealing base. The sealing base is limited to move on the linear track by the track limiting groove. When loading or unloading, the sealing base can be located on one side of the linear track, which is convenient for operation by the robot or tester. After the product 11 to be tested is placed, the sealing base can be pushed on the linear track by the lateral positioning electric cylinder 6 until it is located below the sealing cover plate 51, so that the sealing cover plate 51 and the sealing base can be pressed together for airtightness testing.

[0042] In addition, a positioning component can be set on the straight track to lock the final position of the sealing base so that the sealing base can be located directly below the sealing cover plate 51, ensuring the positional accuracy between the sealing cover plate 51 and the sealing base.

[0043] In the product airtightness testing device of this utility model, four fixed columns and a limiting plate located on the fixed columns are also provided on the base plate 8. The lowering electric cylinder 4 is located on the upper side of the limiting plate, and the sealing cover plate 51 is located on the lower side of the limiting plate. The output shaft of the lowering electric cylinder 4 is connected to the sealing cover plate 51 and is used to drive the sealing cover plate 51 to move up and down to complete the pressing or separating action of the sealing cover plate 51 and the sealing base. In addition, a sealing gasket can be provided on the sealing base or the sealing cover plate 51. The sealing gasket can ensure the sealing effect between the two and reduce the wear between the sealing cover plate 51 and the sealing base.

[0044] To ensure consistency in product testing, a pressure sensor 3 and a pressure output display 9 can be installed on the sealing cover plate 51. When the lowering cylinder 4 drives the sealing cover plate 51 to seal and press against the sealing base plate 52, the pressure sensor 3 can detect the pressing force between the two in real time, and the pressure output display 9 can display the pressing force so that the test personnel can understand and control the relevant parameters of the lowering cylinder 4. In addition, the pressure sensor 3 can also be connected to the control system that controls the action of the lowering cylinder 4. The control system can control the action of the lowering cylinder 4 based on the detection results of the pressure sensor 3 to ensure consistency in product testing.

[0045] Furthermore, at least one sealed cavity 511 is provided in the sealed cover plate 51 and the sealed base plate 52, with one sealed cavity 511 corresponding to one product 11 to be tested, and each sealed cavity 511 is isolated from each other; at the same time, at least one air inlet 10 is provided on the sealed cover plate 51, and the air inlet 10 is connected to the corresponding sealed cavity 511. It can be seen that the number of air inlet 10, the number of products 11 to be tested, and the number of sealed cavities 511 are consistent, thereby effectively improving the testing efficiency of the products, and allowing multiple products or multiple different types of products to be tested for air tightness at the same time.

[0046] The product airtightness testing device of this utility model also includes a standard pressure tank 2 connected to a leak detector 1. One end of the standard pressure tank 2 is connected to the leak detector 1, and the other end is connected to an inflation connector 10. During the test, the leak detector 1 inflates the standard pressure tank 2, and after the air pressure in the standard pressure tank 2 stabilizes, it inflates the sealed cavity 511. The airtightness test result of the product 11 to be tested can be obtained by observing the indication of the leak detector 1. The number of products 11 to be tested corresponds to the number of inflation connectors 10, standard pressure tanks 2, and sealed cavities 511.

[0047] The standard pressure tank 2 has a volume of V1. After the leak detector 1 fills the standard pressure tank 2 with air, the air pressure inside the standard pressure tank 2 is P1. The volume of the sealed cavity 511 is set to V2. According to the formula P1*V1=P2*V2, after the air pressure P1 stabilizes, the air pressure P2 blown into the sealed cavity 511 can be calculated according to the formula. The leakage amount of the product can be determined based on P2.

[0048] In addition, to ensure the stability of the product during the airtightness test and prevent problems such as displacement and damage, a product limiting groove and a detection sensor 53 can be set on the sealing base plate 52. The product to be tested 11 can be placed in the product limiting groove for limiting, or it can be limited by various methods such as magnetic adsorption. The detection sensor 53 is used to detect whether the product to be tested 11 is in place. When the detection sensor 53 sends a signal that the product is in place, the lateral positioning electric cylinder 6 and the pressing electric cylinder 4 can be controlled in sequence by the control system to perform the action.

[0049] According to the above-mentioned product airtightness testing device, a sealed cavity for accommodating the product to be tested can be formed by the cooperation of the sealing base and the sealing cover. It is applicable to various types or shapes of products to be tested. Combined with the connection between the leak detector and the sealed cavity, multiple products to be tested in the sealed cavity can be tested simultaneously and independently. It can achieve fully automated testing, is simple to operate, has high testing efficiency, and can meet the airtightness testing needs of products with different shaped air inlets.

[0050] The product airtightness testing device according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the product airtightness testing device proposed in the present invention without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A product air tightness testing apparatus, characterized by, The product air tightness testing device comprises a leak detector, a base plate, a sealing tool arranged on the base plate, a lateral positioning cylinder for positioning the sealing tool, and a pressing cylinder; wherein, The sealing tool comprises a sealing base and a sealing cover plate matched with the sealing base; The lateral positioning cylinder is used for positioning the sealing base, and the pressing cylinder is used for pressing the sealing cover plate against the sealing base; The sealing base and the sealing cover plate cooperate to form a sealing cavity for accommodating a product to be tested; The leak detector is in communication with the sealing cavity and is used for testing the sealing performance of the product to be tested in the sealing cavity.

2. The product air tightness testing device according to claim 1, wherein, A linear track is arranged on the base plate, and a track limiting groove matched with the linear track is arranged at the bottom of the sealing base; The lateral positioning cylinder is used for pushing the sealing base to move on the linear track.

3. The product gas tightness testing apparatus of claim 2, wherein, A positioning assembly is arranged on the linear track; wherein, The positioning assembly is used for limiting the sealing base so that the sealing base is located directly below the sealing cover plate.

4. The product gas tightness testing apparatus of claim 1, wherein, Further comprising a fixing column arranged on the base plate and a limiting plate arranged on the fixing column; wherein, The pressing cylinder is located on the upper side of the limiting plate, and the sealing cover plate is located on the lower side of the limiting plate, and the pressing cylinder is used for driving the sealing cover plate to move up and down.

5. The product gas tightness testing device of claim 4, wherein, A pressure sensor and a pressure output display are arranged on the sealing cover plate; wherein, The pressure sensor is used for detecting the pressing force of the sealing cover plate against the sealing base; The pressure output display is used for displaying the pressing force.

6. The product gas tightness testing apparatus of claim 1, wherein, The sealing cavity is provided with at least one; wherein, At least one inflation connector is arranged on the sealing cover plate, and the inflation connector is in communication with the corresponding sealing cavity.

7. The product gas tightness testing device of claim 6, wherein, Further comprising a standard pressure tank; wherein, One end of the standard pressure tank is connected with the leak detector, and the other end is connected with the inflation connector; The leak detector is used for inflating the standard pressure tank, and inflating the sealing cavity after the air pressure in the standard pressure tank is stabilized.

8. The product air tightness testing device according to claim 1, wherein, The number of products to be tested corresponds to the number of inflation connectors, standard pressure tanks and sealing cavities.

9. The product gas tightness testing apparatus of claim 1, wherein, A product limiting groove and a detection sensor are arranged on the sealing base; wherein, The product to be tested is placed in the product limiting groove; The detection sensor is used for detecting whether the product to be tested is in place.

10. The product air tightness testing device according to claim 1, wherein, A sealing gasket is arranged on the sealing base or the sealing cover plate.

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