Air tightness detection clamping tool

Abstract

The air tightness detection clamping tool comprises a mounting support, a carrier, a Y-axis clamping assembly, a Z-axis clamping assembly and an air pressure detection assembly, a base is fixed to the bottom of the mounting support, a baffle is fixed to the upper portion of the rear end of the base, a U-shaped groove with an upward opening is formed in the baffle, a limiting column is vertically fixed to the upper portion of the base, and a clamping groove is formed in the lower portion of the base. The two sets of limiting columns are arranged and correspond to the left side and the right side of the base, chamfers are arranged on the inner sides of the upper ends of the limiting columns, the Y-axis clamping assembly is fixed to the mounting support and corresponds to the rear side of the carrier, the Z-axis clamping assembly is fixed to the mounting support and corresponds to the upper portion of the carrier, and the Z-axis clamping assembly comprises a Z-axis air cylinder and a detection pressing head. The Z-axis air cylinder is fixed to the mounting support, the power output end of the Z-axis air cylinder faces downwards, the detection pressing head is fixed to the power output end of the Z-axis air cylinder and corresponds to the upper portion of the carrier, and the special-shaped workpiece clamping and hole site covering device has the advantages that special-shaped workpieces can be rapidly clamped, and therefore the workpiece clamping efficiency and the airtightness detection efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of airtightness detection, in particular to a clamping tool for airtightness detection. Background Technique

[0002] An airtightness detection fixture is a special device used for detecting the airtightness of products or equipment. In many application fields, such as the industries of automobiles, electronics, aerospace, and medical equipment, airtightness testing is a key process to ensure the reliability and safety of products. Most of the existing fixtures are used to clamp regular-shaped objects and cannot clamp irregular-shaped objects, resulting in the inability to detect the airtightness of irregular-shaped objects. For example, workpieces with communication holes provided on the top and side are not suitable for using traditional clamping tools. Therefore, it is necessary to make an airtightness detection clamping tool to solve the above problems. Content of the Utility Model

[0003] The purpose of the utility model is to provide an airtightness detection clamping tool to solve the problems mentioned in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] An airtightness detection clamping tool includes an installation bracket, a carrier, a Y-axis clamping assembly, a Z-axis clamping assembly, and a pressure detection assembly. The carrier includes a base, a baffle, and a limiting column. The base is fixed at the bottom of the installation bracket, the baffle is fixed above the rear end of the base, a U-shaped groove with an upward opening is provided on the baffle, the limiting column is vertically fixed above the base, two groups of limiting columns are provided corresponding to the left and right sides of the base, chamfers are provided on the inner sides of the upper ends of the limiting columns, the Y-axis clamping assembly is fixed on the installation bracket and corresponds to the rear side of the carrier, the Z-axis clamping assembly is fixed on the installation bracket and corresponds to the upper side of the carrier, the Z-axis clamping assembly includes a Z-axis cylinder and a detection pressing head, the Z-axis cylinder is fixed on the installation bracket and the power output end faces downward, the detection pressing head is fixed at the power output end of the Z-axis cylinder and corresponds to the upper side of the carrier, and the pressure detection assembly is fixed on the installation bracket and is communicated with the detection pressing head through a trachea.

[0006] Further description of the utility model: The detection pressing head includes a pressing block, an elastic washer, and a nozzle. The pressing block is fixed at the power output end of the Z-axis cylinder, a blind hole is provided below the pressing block, the elastic washer is fixed at the lower end of the pressing block, the nozzle is fixed on one side of the pressing block and is communicated with the blind hole in the pressing block, the nozzle is connected with the pressure detection assembly through a trachea, and the elastic washer is made of an elastic material.

[0007] Further description of the present utility model: The Y-axis clamping assembly includes a Y-axis cylinder, a pressing plate, and an elastic backing plate. The Y-axis cylinder is fixed on the mounting bracket with its power output end facing forward. The pressing plate is fixed to the power output end of the Y-axis cylinder. The elastic backing plate is fixed to the front side of the pressing plate and corresponds to the rear side of the carrier. The elastic backing plate is made of an elastic material.

[0008] Further description of the present utility model: Both the elastic washer and the elastic backing plate are made of rubber material.

[0009] The beneficial effects of the present utility model are as follows: The rear end and the upper end of the special-shaped workpiece are provided with connected holes. When performing airtightness detection on this kind of workpiece, first place it on the carrier table. The middle part of the workpiece is placed between two groups of limit posts. Under the guiding action of the chamfers on the limit posts, it is convenient to place the workpiece. At this time, the rear end of the workpiece is placed in the U-shaped groove, and the protruding positions on the left and right sides of the rear end of the workpiece correspond to the rear side of the baffle. Then, the Y-axis clamping assembly pushes the workpiece forward until the protruding position of the workpiece contacts the baffle, and at the same time covers the holes at the rear side of the workpiece. Next, the Z-axis clamping assembly clamps the workpiece downward and covers the holes at the upper end of the workpiece. Subsequently, start the air pressure detection assembly to perform airtightness detection on the inside of the workpiece. The advantage of this design is that it can quickly clamp the special-shaped workpiece and cover the holes, so as to improve the clamping efficiency of the workpiece and the detection efficiency of airtightness. Description of the Drawings

[0010] Figure 1 is the overall structure diagram of the present utility model;

[0011] Figure 2 is the overall structure diagram of the present utility model (including the workpiece);

[0012] Figure 3 is the structure diagram of the carrier in the present utility model;

[0013] Figure 4 is the structure diagram of the Y-axis clamping assembly in the present utility model;

[0014] Figure 5 is the structure diagram of the Z-axis clamping assembly in the present utility model;

[0015] Description of the Reference Numerals:

[0016] 1. Mounting bracket; 2. Carrier; 21. Base; 22. Baffle; 221. U-shaped groove; 231. Chamfer;

[0017] 23. Limit post; 3. Y-axis clamping assembly; 31. Y-axis cylinder; 32. Pressing plate; 33. Elastic backing plate;

[0018] 4. Z-axis clamping assembly; 41. Z-axis cylinder; 42. Detection indenter; 421. Pressing block; 422. Elastic washer; 423. Air nozzle; 5. Air pressure detection assembly. Detailed implementation mode

[0019] The present utility model will be further described below with reference to the accompanying drawings:

[0020] As Figures 1 to 5 shown, an airtightness detection clamping tooling includes a mounting bracket 1, a carrier 2, a Y-axis clamping assembly 3, a Z-axis clamping assembly 4 and an air pressure detection assembly 5. The carrier 2 includes a base 21, a baffle 22 and a limit post 23. The base 21 is fixed at the bottom of the mounting bracket 1, the baffle 22 is fixed above the rear end of the base 21, the baffle 22 is provided with an upward-opening U-shaped groove 221, the limit posts 23 are vertically fixed above the base 21, two groups of limit posts 23 are provided and correspond to the left and right sides of the base 21, and chamfers 231 are provided on the inner sides of the upper ends of the limit posts 23. The Y-axis clamping assembly 3 is fixed on the mounting bracket 1 and corresponds to the rear side of the carrier 2, the Z-axis clamping assembly 4 is fixed on the mounting bracket 1 and corresponds to the upper side of the carrier 2. The Z-axis clamping assembly 4 includes a Z-axis cylinder 41 and a detection indenter 42. The Z-axis cylinder 41 is fixed on the mounting bracket 1 and the power output end faces downward. The detection indenter 42 is fixed on the power output end of the Z-axis cylinder 41 and corresponds to the upper side of the carrier 2. The air pressure detection assembly 5 is fixed on the mounting bracket 1 and is communicated with the detection indenter 42 through a trachea.

[0021] Both the rear end and the upper end of the special-shaped workpiece are provided with connected hole positions. When performing airtightness detection on this kind of workpiece, first place it on the carrier table. The middle part of the workpiece is placed between the two groups of limit posts 23. Under the guiding action of the chamfers 231 on the limit posts 23, it is convenient to place the workpiece. At this time, the rear end of the workpiece is placed in the U-shaped groove 221, and the protruding positions on the left and right sides of the rear end of the workpiece correspond to the rear side of the baffle 22. Then, the Y-axis clamping assembly 3 pushes the workpiece forward until the protruding position of the workpiece contacts the baffle 22, and at the same time covers the hole position at the rear side of the workpiece. Then, the Z-axis clamping assembly 4 clamps the workpiece downward and covers the hole position at the upper end of the workpiece. Subsequently, the air pressure detection assembly 5 is started to perform airtightness detection on the inside of the workpiece. The advantage of this design is that it can quickly clamp the special-shaped workpiece and cover the hole positions, so as to improve the clamping efficiency of the workpiece and the detection efficiency of airtightness.

[0022] The detection indenter 42 includes a pressing block 421, an elastic washer 422 and an air nozzle 423. The pressing block 421 is fixed on the power output end of the Z-axis cylinder 41. A blind hole is provided below the pressing block 421. The elastic washer 422 is fixed at the lower end of the pressing block 421. The air nozzle 423 is fixed on one side of the pressing block 421 and is communicated with the blind hole in the pressing block 421. The air nozzle 423 is connected to the air pressure detection assembly 5 through a trachea. The elastic washer 422 is made of an elastic material.

[0023] The Z-axis cylinder 41 drives the detection indenter 42 to descend to press the workpiece downward. The elastic washer 422 is pressed against the edge of the hole position of the workpiece, so that there is no air leakage between the pressing block 421 and the workpiece. The air pressure detection assembly 5 introduces gas into the inner cavity of the workpiece through an air pipe and an air nozzle 423, and detects the magnitude of the air pressure inside the workpiece and the descending amplitude to judge the airtightness of the workpiece.

[0024] The Y-axis clamping assembly 3 includes a Y-axis cylinder 31, a pressing plate 32 and an elastic backing plate 33. The Y-axis cylinder 31 is fixed on the mounting bracket 1 with the power output end facing forward. The pressing plate 32 is fixed to the power output end of the Y-axis cylinder 31. The elastic backing plate 33 is fixed to the front side of the pressing plate 32 and corresponds to the rear side of the carrier 2. The elastic backing plate 33 is made of an elastic material.

[0025] The Y-axis cylinder 31 drives the pressing plate 32 and the elastic backing plate 33 to press the workpiece forward and cover the hole position at the rear end of the workpiece. The elastic backing plate 33 prevents air leakage between the pressing plate 32 and the workpiece.

[0026] Both the elastic washer 422 and the elastic backing plate 33 are made of rubber material. Rubber has good elasticity and can fit the surface of the workpiece. Moreover, rubber has good corrosion resistance and a long service life.

[0027] The above does not impose any limitation on the technical scope of the present utility model. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An air tightness detection clamping tool, characterized in that: The tool comprises a mounting bracket, a carrier, a Y-axis clamping assembly, a Z-axis clamping assembly and an air pressure detection assembly, wherein the carrier comprises a base, a baffle and a limit column, the base is fixed to the bottom of the mounting bracket, the baffle is fixed above the rear end of the base, the baffle is provided with a U-shaped groove opening upward, the limit column is vertically fixed above the base, the limit column is arranged in two groups and corresponds to the left and right sides of the base, the inner side of the upper end of the limit column is provided with a chamfer, the Y-axis clamping assembly is fixed on the mounting bracket and corresponds to the rear side of the carrier, the Z-axis clamping assembly is fixed on the mounting bracket and corresponds to the top of the carrier, the Z-axis clamping assembly comprises a Z-axis cylinder and a detection pressure head, the Z-axis cylinder is fixed on the mounting bracket with the power output end facing downward, the detection pressure head is fixed on the power output end of the Z-axis cylinder and corresponds to the top of the carrier, and the air pressure detection assembly is fixed on the mounting bracket and is connected with the detection pressure head through an air pipe.

2. The air tightness detection fixture according to claim 1, characterized in that: The detection pressure head includes a pressure block, an elastic gasket and an air nozzle. The pressure block is fixed at the power output end of the Z-axis cylinder. A blind hole is provided under the pressure block. The elastic gasket is fixed at the lower end of the pressure block. The air nozzle is fixed at one side of the pressure block and is connected to the blind hole in the pressure block. The air nozzle is connected to the air pressure detection component through an air pipe. The elastic gasket is made of elastic material.

3. The air tightness detection fixture according to claim 2, characterized in that: The Y-axis clamping assembly includes a Y-axis cylinder, a pressure plate and an elastic pad. The Y-axis cylinder is fixed on the mounting bracket with the power output end facing forward, the pressure plate is fixed at the power output end of the Y-axis cylinder, the elastic pad is fixed on the front side of the pressure plate and corresponds to the rear side of the carrier, and the elastic pad is made of elastic material.

4. The air tightness detection fixture according to claim 3 is characterized in that: The elastic gasket and the elastic pad are both made of rubber material.

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