Device and method for testing air tightness of automobile module product

Abstract

The invention provides an automobile module product airtightness testing device and method, and the device comprises a working platform, a multi-position testing tool disposed on the working platform, a plugging pressure head and an inflation air pipe which are connected with each testing tool, a plugging pressure head cylinder connected with the plugging pressure head, and a leak detector connected with the inflation air pipe. And a test product fixing assembly, wherein the test tool is used for placing a to-be-tested automobile module product; the test product fixing assembly is used for fixing an automobile module product to be tested on the test tool; the plugging pressure head cylinder is used for plugging the to-be-tested automobile module product on the test tool through the plugging pressure head; and the leak detector is used for inflating the to-be-tested automobile module product on the test tool through the inflating air pipe and carrying out an air tightness test. The air tightness testing device can solve the problem that no air tightness testing device which can be directly applied to the automobile module product exists at present.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile module testing, and in particular to a fully automatic automobile module product air tightness testing device and method. Background Art

[0002] Automotive module products need to be tested for waterproof level, but the products cannot be directly immersed in water. Therefore, gas under the same pressure is used for sealing test. Currently, there is no airtightness testing device that can be directly applied to automotive module products. In order to realize the airtightness leakage test of automotive module products, a fully automatic automotive module product airtightness testing device is urgently needed. Summary of the invention

[0003] In view of the above problems, an object of the present invention is to provide an airtightness testing device and method for automotive module products, so as to solve the problem that there is currently no airtightness testing device that can be directly applied to automotive module products.

[0004] The present invention provides an air tightness test device for automotive module products, comprising: a working platform, a plurality of test fixtures arranged on the working platform, a plugging pressure head and an air-filled air pipe connected to each test fixture, a plugging pressure head cylinder connected to the plugging pressure head, a leak detector connected to the air-filled air pipe, and a test product fixing component, wherein:

[0005] The test fixture is used to place the automotive module product to be tested;

[0006] The test product fixing component is used to fix the automotive module product to be tested on the test fixture;

[0007] The plugging pressure head cylinder is used to plug the automotive module product to be tested on the test fixture through the plugging pressure head;

[0008] The leak detector is used to inflate the automotive module product to be tested on the testing tool through the inflation air pipe and perform an air tightness test.

[0009] Preferably, the test fixture comprises a base and a contoured fixing groove arranged on the base, wherein:

[0010] The contoured fixing groove is used to accommodate the automotive module product to be tested.

[0011] Preferably, the test product fixing assembly comprises a fixing cylinder, a connecting plate arranged on the fixing cylinder, and a side thrust cylinder fixed to the connecting plate, wherein:

[0012] The side thrust cylinder is used to provide a force for the fixed cylinder to move in the horizontal direction;

[0013] The fixing cylinder is used to fix the automobile module product to be tested on the testing fixture.

[0014] Preferably, a pressure sensor is provided on the plugging pressure head, wherein:

[0015] The pressure sensor is used to detect the pressure in the blocking pressure head.

[0016] Preferably, a product test port is provided on the automobile module product to be tested, wherein the sealing pressure head and the inflation air pipe are both connected to the product test port.

[0017] Preferably, the sealing pressure head cylinder seals the automotive module product to be tested through the sealing pressure head and the product test port.

[0018] Preferably, the leak detector inflates and performs air tightness test on the automotive module product to be tested through the inflation air pipe and the product test port.

[0019] The present invention also provides an automobile module product air tightness testing method, using the above-mentioned automobile module product air tightness testing device to test the air tightness of the automobile module product to be tested, and the testing method comprises:

[0020] Placing the automotive module product to be tested on a testing fixture;

[0021] Fixing the automotive module product to be tested in the contoured fixing groove of the test fixture by means of a test product fixing component;

[0022] The product test port of the automotive module product to be tested is blocked by a blocking pressure head cylinder, wherein when the pressure of the product test port reaches a preset pressure, the blocking pressure head cylinder stops blocking the product test port;

[0023] Inflate the product test port through a leak detector;

[0024] According to the leakage threshold detection after the product test port is inflated, the airtightness test of the automotive module product to be tested is completed.

[0025] Preferably, the plugging pressure head cylinder is connected to the product test port through the plugging pressure head, and a pressure sensor is provided on the plugging pressure head;

[0026] The plugging pressure head cylinder moves toward a position close to the product test port, and when the pressure sensor detects that the pressure in the plugging pressure reaches a preset pressure, the plugging pressure head cylinder stops moving toward the product test port.

[0027] Preferably, the airtightness test of the automotive module product to be tested is completed according to the air leakage threshold detection after the product test port is inflated, including:

[0028] The air pressure of the product test port after being inflated detected by the pressure sensor is marked as the inflation pressure;

[0029] After a preset time, the air pressure of the product test port detected by the pressure sensor is marked as the sealing air pressure;

[0030] If the difference between the inflation pressure and the sealing pressure is less than the leakage threshold, the air tightness of the automotive module product to be tested is good;

[0031] If the difference between the inflation pressure and the sealing pressure is greater than the leakage threshold, the air tightness of the automotive module product to be tested is unqualified.

[0032] It can be seen from the above technical scheme that the automotive module product air tightness testing device and method provided by the present invention can be directly applied to the air tightness and waterproof leakage test of the automotive module product, and the test accuracy can reach ±1KPa. At the same time, by adopting a multi-position test tooling, multiple automotive module products can be tested for air tightness at the same time. The technology of the present invention can meet the requirements of waterproof testing and at the same time can maximize the test efficiency.

[0033] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0035] Figure 1 A three-dimensional schematic diagram of an air tightness testing device for an automobile module product according to an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of the top view of the air tightness testing device for an automobile module product according to an embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of the side structure of an air tightness testing device for an automobile module product according to an embodiment of the present invention;

[0038] Figure 4The figure is a flow chart of a method for testing air tightness of an automobile module product according to an embodiment of the present invention.

[0039] Reference numerals include:

[0040] 1. Side thrust cylinder;

[0041] 2. fixed cylinder, 21. first fixed cylinder, 22. second fixed cylinder;

[0042] 3. Test fixture, 31. First test fixture, 311. First profiling fixing groove, 312. First product test port, 32. Second test fixture, 321. Second profiling fixing groove, 322. Second product test port;

[0043] 4. Sealing pressure head cylinder, 41. First sealing pressure head cylinder, 42. Second sealing pressure head cylinder;

[0044] 5. plugging pressure head, 51. first plugging pressure head, 52. second plugging pressure head;

[0045] 6. Inflatable air tube, 61. First inflatable air tube, 62. Second inflatable air tube;

[0046] 7. Leak detector, 71. First leak detector, 72. Second leak detector;

[0047] 8. pressure sensor, 81. first pressure sensor, 82. second pressure sensor;

[0048] 9. Connecting plate, 10. Working platform.

[0049] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0050] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0051] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In response to the aforementioned problem that there is currently no air tightness testing device that can be directly applied to automotive module products, the present invention provides an automotive module product air tightness testing device and method.

[0053] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0054] In order to illustrate the structure of the automotive module product air tightness testing device provided by the present invention, Figures 1 to 3 The structure of the air tightness test device for automotive module products is exemplarily indicated from different angles. Specifically, Figure 1 The three-dimensional structure of the air tightness testing device for automobile module products according to an embodiment of the present invention is shown; Figure 2 The top view structure of the air tightness testing device for automobile module products according to an embodiment of the present invention is shown; Figure 3 The side view structure of the air tightness testing device for automobile module products according to an embodiment of the present invention is shown.

[0055] like Figures 1 to 3 As shown together, the automobile module product air tightness testing device provided by the present invention includes: a working platform 10, a multi-position testing fixture 3 arranged on the working platform 10, a sealing pressure head 5 and an inflation air pipe 6 connected to each testing fixture 3, a sealing pressure head cylinder 4 connected to the sealing pressure head 6, a leak detector 7 connected to the inflation air pipe 6, and a testing product fixing component, wherein the testing fixture 3 is used to place the automobile module product to be tested; the testing product fixing component is used to fix the automobile module product to be tested on the testing fixture 3; the sealing pressure head cylinder 4 is used to seal the automobile module product to be tested on the testing fixture 3 through the sealing pressure head 5; the leak detector 7 is used to inflate the automobile module product to be tested on the testing fixture 3 through the inflation air pipe 6 and perform an air tightness test.

[0056] In the embodiment of the present invention, the above device uses multiple stations and can simultaneously test the air tightness of multiple automotive module products to be tested. In the application, the required number of stations can be set as needed. Figures 1 to 3 In the illustrated embodiment, a dual-position test fixture is shown, which can test the air tightness of two automotive module products at the same time.

[0057] The test fixture 3 includes a base and a contoured fixing groove arranged on the base, wherein the contoured fixing groove is used to accommodate the automotive module product to be tested. Figure 1 and Figure 2 In the illustrated embodiment, the test fixture includes a first test fixture 31 and a second test fixture 32. A first contour fixing groove 311 is provided on the first test fixture 31, and a second contour fixing groove 321 is provided on the second test fixture 32. Each contour fixing groove can accommodate an automotive module product.

[0058] The test product fixing assembly includes a fixed cylinder 2, a connecting plate 9 arranged on the fixed cylinder 2, and a thrust cylinder 1 fixed to the connecting plate 9, wherein the thrust cylinder 1 is used to provide a force for the fixed cylinder 3 to move in the horizontal direction; the fixed cylinder 3 is used to fix the automotive module product to be tested on the test fixture 3. The connecting plate 9 is an L-shaped connecting plate, one side of the connecting plate 9 is fixed to the fixed cylinder 2, and the other side is fixed to the thrust cylinder 1. Figure 1 and Figure 2 In the illustrated embodiment, the side thrust cylinder 1 simultaneously provides horizontal thrust for the first fixed cylinder 21 and the second fixed cylinder 22. That is, the side thrust cylinder 1 simultaneously moves the first fixed cylinder 21 and the second fixed cylinder 22 to the top of the first test fixture 31 and the second test fixture 32 through the connecting plate 9, and the first fixed cylinder 21 and the second fixed cylinder 22 move downward to the position corresponding to the automotive module product to be tested, and fix the corresponding automotive module product to be tested on the first test fixture 31 and the second test fixture 32 respectively.

[0059] Wherein, a pressure sensor 8 is provided on the plugging pressure head 5, and the pressure sensor 8 is used to detect the pressure inside the plugging pressure head 5. Figure 1 and Figure 2 In the illustrated embodiment, a first pressure sensor 81 is provided on the first plugging pressure head 51 , and the first pressure sensor 81 is used to detect the pressure inside the first plugging pressure head 51 ; a second pressure sensor 82 is provided on the second plugging pressure head 52 , and the second pressure sensor 82 is used to detect the pressure inside the second plugging pressure head 52 .

[0060] Wherein, a product test port is provided on the automotive module product to be tested, wherein the plugging pressure head and the inflation air pipe are both connected to the product test port. Figure 1 and Figure 2 In the illustrated embodiment, the first plugging pressure head 51 and the first inflation air pipe 61 are both connected to the first product test port 312 , and the second plugging pressure head 52 and the second inflation air pipe 62 are both connected to the second product test port 322 .

[0061] The plugging pressure head cylinder 4 plugs the automotive module product to be tested through the plugging pressure head 5 and the product test port. The leak detector 7 inflates and performs air tightness test on the automotive module product to be tested through the inflation air pipe 6 and the product test port.

[0062] exist Figure 1 and Figure 2 In the illustrated embodiment, the first product test port 312 is respectively connected to the first blocking pressure head 51 and the first inflation air pipe 61, the first blocking pressure head 51 is connected to the first blocking cylinder 41, and the first inflation air pipe 61 is connected to the first leak detector 71, wherein the first blocking cylinder 41 blocks the first product test port 312 through the first blocking pressure head 51, and when the first pressure sensor 81 detects that the pressure in the first blocking pressure head 51 reaches the preset pressure, the first blocking cylinder 41 stops blocking the first product test port 312, and then the first leak detector 71 inflates the first product test port 312 through the first inflation air pipe 61, and performs an air tightness test. The second product test port 322 is connected to the second plugging pressure head 52 and the second air-filling pipe 62 respectively. The second plugging pressure head 52 is connected to the second plugging cylinder 42. The second air-filling pipe 62 is connected to the second leak detector 72. The second plugging cylinder 42 plugs the second product test port 322 through the second plugging pressure head 52. When the second pressure sensor 82 detects that the pressure in the second plugging pressure head 52 reaches the preset pressure, the second plugging cylinder 42 stops plugging the second product test port 322. Then the second leak detector 72 inflates the second product test port 322 through the second air-filling pipe 62 and performs an airtightness test. After the test is completed, the first leak detector 71 and the second leak detector 72 are inflated, the first fixed cylinder 21 and the second fixed cylinder 22 move upward, and the side push cylinder 1 retracts to the initial position, and the first plugging cylinder 41 and the second plugging cylinder 42 retract to the initial position.

[0063] The testing device of the present invention can be directly applied to the air tightness and waterproof leakage test of automobile module products, and can realize multi-station simultaneous testing, which not only meets the requirements of waterproof testing, but also maximizes the testing efficiency.

[0064] Corresponding to the above device, the present invention also provides a method for testing the air tightness of an automobile module product. Figure 4 The flow chart of the air tightness testing method of the automotive module product according to the embodiment of the present invention is shown.

[0065] like Figure 4 As shown, the air tightness testing method for automobile module products provided by the present invention uses the above-mentioned automobile module product air tightness testing device to test the air tightness of the automobile module product to be tested, and the testing method includes:

[0066] S1: placing the automotive module product to be tested on a testing tool;

[0067] S2: Fixing the automotive module product to be tested in the contoured fixing groove of the test fixture by means of a test product fixing component;

[0068] S3: blocking the product test port of the automotive module product to be tested by using a blocking pressure head cylinder, wherein when the pressure of the product test port reaches a preset pressure, the blocking pressure head cylinder stops blocking the product test port;

[0069] S4: Inflate the product test port through a leak detector;

[0070] S5: According to the leakage threshold detection after the product test port is inflated, the airtightness test of the automotive module product to be tested is completed.

[0071] In step S3, the sealing pressure head cylinder is connected to the product test port through the sealing pressure head, and a pressure sensor is provided on the sealing pressure head; the sealing pressure head cylinder moves to a position close to the product test port, and when the pressure sensor detects that the pressure in the sealing pressure reaches a preset pressure, the sealing pressure head cylinder stops moving toward the product test port.

[0072] In step S5, the airtightness test of the automotive module product to be tested is completed according to the air leakage threshold detection after the product test port is inflated, including:

[0073] The air pressure of the product test port after being inflated detected by the pressure sensor is marked as the inflation pressure;

[0074] After a preset time, the air pressure of the product test port detected by the pressure sensor is marked as the sealing air pressure;

[0075] If the difference between the inflation pressure and the sealing pressure is less than the leakage threshold, the air tightness of the automotive module product to be tested is good;

[0076] If the difference between the inflation pressure and the sealing pressure is greater than the leakage threshold, the air tightness of the automotive module product to be tested is unqualified.

[0077] The specific structure of the device in the air tightness testing method of the automotive module product of the present invention refers to the aforementioned embodiment. Since this testing method adopts all the technical solutions of all the aforementioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the aforementioned embodiments, which will not be repeated here one by one.

[0078] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An automotive module product air tightness testing device, characterized in that: The invention comprises: a working platform, a plurality of test fixtures arranged on the working platform, a plugging pressure head and an air-filled air pipe connected to each test fixture, a plugging pressure head cylinder connected to the plugging pressure head, a leak detector connected to the air-filled air pipe, and a test product fixing component, wherein: The test fixture is used to place the automotive module product to be tested; The test product fixing component is used to fix the automotive module product to be tested on the test fixture; The plugging pressure head cylinder is used to plug the automotive module product to be tested on the test fixture through the plugging pressure head; The leak detector is used to inflate the automotive module product to be tested on the testing tool through the inflation air pipe and perform an air tightness test.

2. The air tightness testing device for automotive module products according to claim 1, characterized in that: The test fixture comprises a base and a contoured fixing groove arranged on the base, wherein: The contoured fixing groove is used to accommodate the automotive module product to be tested.

3. The air tightness testing device for automotive module products according to claim 1, characterized in that: The test product fixing assembly includes a fixing cylinder, a connecting plate arranged on the fixing cylinder, and a side thrust cylinder fixed to the connecting plate, wherein: The side thrust cylinder is used to provide a force for the fixed cylinder to move in the horizontal direction; The fixing cylinder is used to fix the automobile module product to be tested on the testing fixture.

4. The air tightness testing device for automotive module products according to claim 1, characterized in that: A pressure sensor is provided on the plugging pressure head, wherein: The pressure sensor is used to detect the pressure in the blocking pressure head.

5. The air tightness testing device for automotive module products according to claim 4, characterized in that: A product test port is provided on the automobile module product to be tested, wherein the blocking pressure head and the inflation air pipe are both connected to the product test port.

6. The air tightness testing device for automotive module products according to claim 5, characterized in that: The blocking pressure head cylinder blocks the automotive module product to be tested through the blocking pressure head and the product test port.

7. The air tightness testing device for automotive module products according to claim 5, characterized in that: The leak detector inflates and performs air tightness test on the automotive module product to be tested through the inflation air pipe and the product test port.

8. A method for testing air tightness of automotive module products, characterized in that: The air tightness testing device for automobile module products according to any one of claims 1 to 7 is used to test the air tightness of the automobile module product to be tested, and the testing method comprises: Placing the automotive module product to be tested on a testing fixture; Fixing the automotive module product to be tested in the contoured fixing groove of the test fixture by means of a test product fixing component; The product test port of the automotive module product to be tested is blocked by a blocking pressure head cylinder, wherein when the pressure of the product test port reaches a preset pressure, the blocking pressure head cylinder stops blocking the product test port; Inflate the product test port using a leak detector; According to the leakage threshold detection after the product test port is inflated, the airtightness test of the automotive module product to be tested is completed.

9. The air tightness testing method for automotive module products according to claim 8, characterized in that: The plugging pressure head cylinder is connected to the product test port through the plugging pressure head, and a pressure sensor is arranged on the plugging pressure head; The plugging pressure head cylinder moves toward a position close to the product test port, and when the pressure sensor detects that the pressure in the plugging pressure reaches a preset pressure, the plugging pressure head cylinder stops moving toward the product test port.

10. The air tightness testing method for automotive module products according to claim 9, characterized in that: The airtightness test of the automotive module product to be tested is completed according to the air leakage threshold detection after the product test port is inflated, including: The air pressure of the product test port after being inflated detected by the pressure sensor is marked as the inflation pressure; After a preset time, the air pressure of the product test port detected by the pressure sensor is marked as the sealing air pressure; If the difference between the inflation pressure and the sealing pressure is less than the leakage threshold, the air tightness of the automotive module product to be tested is good; If the difference between the inflation pressure and the sealing pressure is greater than the leakage threshold, the air tightness of the automotive module product to be tested is unqualified.

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