Airtightness test tool clamp

Abstract

The utility model relates to an airtight test work fixture in the technical field of test fixtures, which comprises an upper fixed die, a lower fixed die, a side pressure module and a die assembly, the adjacent end faces of the upper fixed die and the lower fixed die are provided with sealing rubber rings, the side wall of the lower fixed die is provided with an air inlet interface, and the air inlet interface is provided with an air outlet. The air inlet connector is used for conducting air inlet pressurization between the upper fixed mold and the lower fixed mold, the side pressing modules are movably connected to the two ends of the lower fixed mold through the horizontal pushing assembly, a sealing rubber block is arranged at one end of each side pressing module, the mold closing assembly comprises fixing rods and a threaded connection sleeve, the fixing rods are vertically arranged on the periphery of the lower fixed mold, and the threaded connection sleeve is connected with the lower fixed mold. The screw joint sleeve is detachably fixed with one end, far away from the lower fixing die, of the fixing rod, the air tightness test tool clamp is placed in water, the bubbling position between the upper fixing die and the lower fixing die is observed, so that the position of poor air tightness of a product is effectively reflected, and meanwhile, the die assembly structure of the mechanical structure is suitable for the water entry test of the clamp.

Description

Technical Field

[0001] The utility model relates to the technical field of test fixtures, in particular to an airtight test fixture. Background Art

[0002] The frames of portable devices such as mobile phones, computers, and tablets are generally equipped with process holes such as charging ports and micro-speaker module cavity holes. To ensure product reliability, the product frames need to be tested for airtightness at the process holes.

[0003] Existing airtightness test fixtures generally require clamping the product in a fixture to form a closed chamber, pressurizing or vacuuming the chamber, and testing the air pressure in the chamber to determine the airtightness quality of the product's process holes.

[0004] However, the existing air tightness test fixture can only distinguish between good and unqualified products through external air pressure detection equipment, and cannot reflect the location of poor air tightness in the product. Therefore, in response to these current situations, there is an urgent need to develop an air tightness test fixture to meet the needs of actual use. Utility Model Content

[0005] The purpose of the utility model is to provide an airtight test fixture for solving the above technical problems.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The cam is secured to the bottom of the airtight mold and is adapted to engage the airtight seal of the airtight mold with respect to the airtight seal.

[0008] In the above description, as a further solution, a swing groove is provided around the lower fixed mold, and the bottom end of the fixed rod is swingably arranged inside the swing groove. An air avoidance groove is provided around the upper fixed mold, and the top end of the fixed rod extends through the air avoidance groove to the top surface of the upper fixed mold, and the top end of the fixed rod is threadedly fixed to the threaded sleeve.

[0009] In the above description, as a further solution, side panels are provided at both ends of the lower fixed mold, and a guide rail slider assembly is provided between the side pressure module and the side panels, and the side panels are movably connected to the top surfaces of the side panels through the guide rail slider assembly.

[0010] In the above description, as a further solution, the horizontal propulsion assembly includes a shift rod, a bracket and a pull rod. The shift rod is rotatably arranged at one end of the bracket, and the pull rod is horizontally movably arranged at one end of the bracket close to the side pressure module. One end of the pull rod is fixedly connected to the side pressure module, and the other end of the pull rod is rotatably connected to the shift rod.

[0011] In the above description, as a further solution, vertically arranged positioning columns are provided at the four corners of the bottom end face of the upper fixed mold, and the top surface of the lower fixed mold is provided with a number of positioning holes matching the positioning columns. When the upper fixed mold and the lower fixed mold are closed, the positioning columns and the corresponding positioning holes are plugged in and limited.

[0012] The beneficial effects produced by the utility model are as follows:

[0013] An airtight test fixture of the present application clamps the upper fixed mold, the lower fixed mold and the side pressure module respectively through mechanical structures such as a mold clamping assembly and a horizontal propulsion assembly, and after the mold is clamped, the air intake interface is used to perform air intake and pressurization between the upper fixed mold and the lower fixed mold, and the airtight test fixture is placed in water to observe the bubbling area between the upper fixed mold and the lower fixed mold, thereby effectively reflecting the location of poor airtightness of the product. At the same time, the mold clamping structure of the mechanical structure is suitable for the characteristics of the fixture immersion in water test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of an airtightness test fixture according to the present invention;

[0015] Figure 2 This is a schematic diagram of the structure decomposition of an airtightness test fixture according to the present invention;

[0016] Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure of the middle part;

[0017] Figure 4 This is a schematic cross-sectional view of an airtightness test fixture according to the present invention;

[0018] In the figure: 1-upper fixed mold, 11-upper cavity, 12-avoidance groove, 2-lower fixed mold, 21-lower cavity, 22-swing groove, 23-positioning hole, 3-side plate, 31-side pressure module, 32-sealing rubber block, 33-guide rail slider assembly, 4-horizontal propulsion assembly, 41-shift rod, 42-bracket, 43-pull rod, 5-mold clamping assembly, 51-fixed rod, 52-threaded sleeve, 6-positioning column, 7-sealing rubber ring, 8-air inlet interface. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0020] See also Figure 1-4 , a specific implementation of an airtight test fixture, including an upper fixed mold 1, a lower fixed mold 2, a side pressure module 31 and a mold clamping assembly 5, the adjacent end surfaces of the upper fixed mold 1 and the lower fixed mold 2 are provided with a sealing rubber ring 7, the sealing rubber ring 7 is a frame-shaped structure, the sealing rubber ring 7 is respectively located in the upper fixed mold 1 and the lower fixed mold 2 to form an upper cavity 11 and a lower cavity 21, and the upper fixed mold 1 can abut against the top surface of the lower fixed mold 2, the side wall of the lower fixed mold 2 is provided with a sealing rubber ring 8, the sealing rubber ring 8 is used to perform air intake and pressurization between the upper fixed mold 1 and the lower fixed mold 2, the side pressure module 3 1 is movably connected to both ends of the lower fixed mold 2 through a horizontal propulsion assembly 4, and a sealing rubber block 32 is provided at one end of the side pressure module 31. The sealing rubber block 32 can be moved and abutted between the upper fixed mold 1 and the lower fixed mold 2 through the horizontal propulsion assembly 4. The mold clamping assembly 5 includes a fixing rod 51 and a threaded sleeve 52. The fixing rod 51 is vertically arranged around the lower fixed mold 2, and the threaded sleeve 52 is arranged on the upper fixed mold 1. The threaded sleeve 52 is detachably fixed to the end of the fixing rod 51 away from the lower fixed mold 2, and the threaded sleeve 52 abuts the top surface of the upper fixed mold 1.

[0021] Specifically, such as Figure 2 As shown, the lower fixed mold 2 is provided with a swing groove 22 around it, and the bottom end of the fixed rod 51 is swingably set inside the swing groove 22. The upper fixed mold 1 is provided with an air avoidance groove 12 around it, and the top end of the fixed rod 51 extends through the air avoidance groove 12 to the top surface of the upper fixed mold 1. The top end of the fixed rod 51 is threadedly fixed to the threaded sleeve 52.

[0022] Specifically, such as Figure 3As shown, both ends of the lower fixed mold 2 are provided with side panels 3, and a guide rail slider assembly 33 is provided between the side pressure module 31 and the side panel 3. The side panel 3 is movably connected to the top surface of the side panel 3 through the guide rail slider assembly 33. The horizontal propulsion assembly 4 includes a shift rod 41, a bracket 42 and a pull rod 43. The shift rod 41 is rotatably arranged at one end of the bracket 42, and the pull rod 43 is horizontally movably arranged at one end of the bracket 42 close to the side pressure module 31. One end of the pull rod 43 is fixedly connected to the side pressure module 31, and the other end of the pull rod 43 is rotatably connected to the shift rod 41.

[0023] In a further solution, vertically arranged positioning columns 6 are provided at the four corners of the bottom end surface of the upper fixed mold 1, and the top surface of the lower fixed mold 2 is provided with a number of positioning holes 23 matching the positioning columns 6. When the upper fixed mold 1 and the lower fixed mold 2 are closed, the positioning columns 6 and the corresponding positioning holes 23 are plugged in and limited.

[0024] The upper fixed mold 1, the lower fixed mold 2 and the side pressure module 31 are respectively clamped by mechanical structures such as the mold clamping assembly 5 and the horizontal propulsion assembly 4. After the mold is clamped, the sealing rubber ring 8 is used to intake and pressurize the space between the upper fixed mold 1 and the lower fixed mold 2, and the airtight test fixture is placed in water to observe the bubbling area between the upper fixed mold 1 and the lower fixed mold 2, thereby effectively reflecting the location of poor airtightness of the product. At the same time, the clamping structure of the mechanical structure is suitable for the characteristics of the fixture immersion in water test.

[0025] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. An airtight test fixture, characterized in that: include: The upper fixed mold and the lower fixed mold are provided with sealing rubber rings on the adjacent end surfaces of the upper fixed mold and the lower fixed mold. The sealing rubber rings are frame-shaped structures. The sealing rubber rings are respectively located in the upper fixed mold and the lower fixed mold to form an upper cavity and a lower cavity. The upper fixed mold can abut against the top surface of the lower fixed mold. The side wall of the lower fixed mold is provided with an air intake interface, which is used to intake and pressurize air between the upper fixed mold and the lower fixed mold. A side pressure module, wherein the side pressure module is movably connected to both ends of the lower fixed mold through a horizontal propulsion assembly, and a sealing rubber block is provided at one end of the side pressure module, and the sealing rubber block can be moved between the upper fixed mold and the lower fixed mold through the horizontal propulsion assembly to make contact; The mold closing assembly includes a fixing rod and a threaded sleeve. The fixing rod is vertically arranged around the lower fixed mold, the threaded sleeve is arranged on the upper fixed mold, and the threaded sleeve is detachably fixed to the end of the fixing rod away from the lower fixed mold, and the threaded sleeve abuts against the top surface of the upper fixed mold.

2. The airtight test fixture according to claim 1, characterized in that: The lower fixed mold is provided with a swing groove around it, and the bottom end of the fixed rod is swingably arranged inside the swing groove. The upper fixed mold is provided with an air avoidance groove around it, and the top end of the fixed rod extends through the air avoidance groove to the top surface of the upper fixed mold, and the top end of the fixed rod is threadedly fixed to the threaded sleeve.

3. The airtight test fixture according to claim 1, characterized in that: Both ends of the lower fixed mold are provided with side plates, and a guide rail slider assembly is provided between the side pressure module and the side plates, and the side plates are movably connected to the top surfaces of the side plates through the guide rail slider assembly.

4. The airtight test fixture according to claim 3, characterized in that: The horizontal propulsion assembly includes a shift rod, a bracket and a pull rod. The shift rod is rotatably arranged at one end of the bracket, and the pull rod is horizontally movably arranged at one end of the bracket close to the side pressure module. One end of the pull rod is fixedly connected to the side pressure module, and the other end of the pull rod is rotatably connected to the shift rod.

5. The airtight test fixture according to any one of claims 1 to 4, characterized in that: The four corners of the bottom end face of the upper fixed mold are provided with vertically arranged positioning columns, and the top end face of the lower fixed mold is provided with a plurality of positioning holes matching the positioning columns. When the upper fixed mold and the lower fixed mold are closed, the positioning columns and the corresponding positioning holes are plugged in and limited.

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