Airtightness test fixture

Abstract

The utility model relates to an air tightness test tool comprising a base plate, a support column connected to the base plate, a fixed top plate connected to the top end of the support column, a driving device connected to the fixed top plate, a pressing plate connected to the connecting plate, and a pressing column assembly connected to the pressing plate. The base plate is connected with a fixing seat used for installing a product, the left side and the right side of the fixing seat are connected with a left airtight fixing plate and a right airtight fixing plate respectively, and the left airtight fixing plate and the right airtight fixing plate are connected with a left airtight air cylinder and a right airtight air cylinder respectively. A driving shaft of the left airtight air cylinder is connected with a first sealing block used for sealing an air inlet of a product, the driving shaft of the left airtight air cylinder is connected with an airtight detection device communicated with the air inlet of the product, and a driving shaft of the right airtight air cylinder is connected with a second sealing block used for sealing an air outlet of the product. According to the utility model, the airtightness detection efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to an airtight testing jig. Background Art

[0002] Air tightness testing is a necessary testing process in the production of automotive parts. Air tightness testing refers to a type of tightness test that uses gas as a pressurized medium to prevent pressure vessels from leaking. This is a must for pressure vessels whose internal media are extremely toxic, highly hazardous, or whose designs do not allow for trace leakage. Air tightness testing can only be carried out after the hydraulic test is passed. Containers that have passed the air pressure test are generally exempt from air tightness testing, or according to the requirements of the design drawings. The gas used in the air tightness test is the same as the requirements for the air pressure test. After searching, the patent: Airtight pneumatic test fixture (CN202022300832.9) includes a base plate, a double-acting cylinder and an air circuit regulating valve are fixed on the upper surface of the base plate, and the double-acting cylinder and the air circuit regulating valve are connected by a pipeline to form an air circuit, and a mobile fixture is slidably arranged near the telescopic end of the double-acting cylinder on the base plate, and the sliding direction of the mobile fixture is consistent with the telescopic direction of the double-acting cylinder, and a circular slot is arranged at one end of the mobile fixture, and an airtight connector is arranged near one end of the circular slot near the double-acting cylinder, and a locking assembly is arranged between the mobile fixture and the base plate, and a metal push block is fixed at the telescopic end of the double-acting cylinder, and a positioning groove is arranged at the middle position of the top of the metal push block. The above structure is not stable enough for fixing automotive parts, and the efficiency of airtight detection is not high.

[0003] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create a new type of airtight test fixture with greater industrial utilization value. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide an airtight test fixture.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A gas-tight test fixture comprises a base plate, a support column is connected to the base plate, a fixed top plate is connected to the top of the support column, a driving device is connected to the fixed top plate, a driving shaft of the driving device passes through the fixed top plate and is connected to a connecting plate, a clamping plate is connected to the connecting plate, a plurality of clamping column assemblies with the same structure and used to measure the aperture of a product are connected to the clamping plate, a fixing seat for mounting a product is connected to the base plate, the fixing seat is located directly below the clamping plate, a left gas-tight fixing plate and a right gas-tight fixing plate are connected to the left and right sides of the fixing seat respectively, a left gas-tight cylinder and a right gas-tight cylinder are connected to the left and right gas-tight fixing plates respectively, a first sealing block for sealing a product air inlet is connected to the driving shaft of the left gas-tight cylinder, a gas-tight connecting block connected to the product air inlet is connected to the driving shaft of the left gas-tight cylinder, and a second sealing block for sealing a product air outlet is connected to the driving shaft of the right gas-tight cylinder.

[0007] Preferably, in the airtight test fixture, a guide column is passed through the fixed top plate, and one end of the guide column is connected to the clamping plate.

[0008] Preferably, in the airtight test fixture, the clamping column assembly comprises a clamping column body, a movable clamping connecting rod is passed through the clamping column body, a buffer spring is sleeved on the clamping connecting rod, and a clamping connector is connected to the clamping connecting rod.

[0009] Preferably, in the airtight test fixture, the fixing seat is connected to a positioning fixing column for positioning the product.

[0010] Preferably, in the airtight test fixture, the clamping plate is connected to a limiting column.

[0011] By means of the above solution, the utility model has at least the following advantages:

[0012] The utility model can quickly fix the product and also can quickly perform airtightness test on the product, thus effectively improving the working efficiency of airtightness detection.

[0013] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0018] Example

[0019] like Figure 1 As shown, an airtight test fixture comprises a bottom plate 1, to which a support column 2 is connected, to which a fixed top plate 3 is connected on the top of the support column 2, to which a driving device 4 is connected, and a driving shaft of the driving device 4 passes through the fixed top plate 3 and is connected to a connecting plate 5, to which a clamping plate 6 is connected, to which a plurality of clamping column assemblies 7 of the same structure and used for measuring the aperture of a product are connected, and to which a fixing seat 9 for mounting a product is connected on the bottom plate 1, and the fixing seat 9 is located directly below the clamping plate 6, A left airtight fixing plate 10 and a right airtight fixing plate 11 are respectively connected to the left and right sides of the fixing seat 9, and a left airtight cylinder 12 and a right airtight cylinder 13 are respectively connected to the left airtight fixing plate 10 and the right airtight fixing plate 11, a first sealing block 14 for sealing the product air inlet is connected to the driving shaft of the left airtight cylinder 12, an airtight connecting block 16 connected to the product air inlet is connected to the driving shaft of the left airtight cylinder 12, and a second sealing block 15 for sealing the product air outlet is connected to the driving shaft of the right airtight cylinder 13.

[0020] In the present invention, a guide column 8 is passed through the fixed top plate 3 , and one end of the guide column 8 is connected to the pressing plate 6 .

[0021] The clamping column assembly 7 in the utility model comprises a clamping column body 71, a movable clamping connecting rod 72 is connected to the clamping column body 71, a buffer spring 73 is sleeved on the clamping connecting rod 72, a clamping connector 74 is connected to the clamping connecting rod 72, and a limit column 18 is connected to the clamping plate 6 to prevent excessive clamping of the product.

[0022] The fixing seat 9 is connected with a positioning fixing column 17 for positioning the product.

[0023] The working principle of the utility model is as follows:

[0024] During the specific work, after the product is placed by the positioning and fixing column, the product is fixed by the cooperation of the compression column assembly and the driving device (cylinder). After the fixation is completed, the air inlet and outlet of the product are sealed. After sealing, the product is ventilated through the airtight detection device (existing equipment) connected to the airtight connection block, and the airtight detection device (not shown) is used to detect whether the airtightness of the product meets the standard.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of this application, it should be noted that the terms "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or vertical, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. An airtight test fixture, characterized in that: The invention comprises a bottom plate (1), the bottom plate (1) is connected to a support column (2), the top of the support column (2) is connected to a fixed top plate (3), the fixed top plate (3) is connected to a driving device (4), the driving shaft of the driving device (4) passes through the fixed top plate (3) and is connected to a connecting plate (5), the connecting plate (5) is connected to a clamping plate (6), the clamping plate (6) is connected to a plurality of groups of clamping column assemblies (7) of the same structure and used for measuring the aperture of the product, the bottom plate (1) is connected to a fixing seat (9) for mounting the product, the fixing seat (9) is located directly below the clamping plate (6), and is positioned A left airtight fixing plate (10) and a right airtight fixing plate (11) are connected to the left and right sides of the fixing seat (9), respectively; a left airtight cylinder (12) and a right airtight cylinder (13) are connected to the left airtight fixing plate (10) and the right airtight fixing plate (11), respectively; a first sealing block (14) for sealing the product air inlet is connected to the driving shaft of the left airtight cylinder (12); an airtight connecting block (16) connected to the product air inlet is connected to the driving shaft of the left airtight cylinder (12); and a second sealing block (15) for sealing the product air outlet is connected to the driving shaft of the right airtight cylinder (13).

2. The airtight test fixture according to claim 1, characterized in that: A guide column (8) is passed through the fixed top plate (3), and one end of the guide column (8) is connected to the pressing plate (6).

3. The airtight test fixture according to claim 1, characterized in that: The clamping column assembly (7) comprises a clamping column body (71), a movable clamping connecting rod (72) is passed through the clamping column body (71), a buffer spring (73) is sleeved on the clamping connecting rod (72), and a clamping connecting head (74) is connected to the clamping connecting rod (72).

4. The airtight test fixture according to claim 1, characterized in that: The fixing seat (9) is connected with a positioning fixing column (17) for positioning the product.

5. The airtight test fixture according to claim 1, characterized in that: The pressing plate (6) is connected to a limiting column (18).

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