Air tightness detection device

Abstract

The invention belongs to the technical field of automobile part production and manufacturing, and discloses an air tightness detection device that comprises a clamping mechanism, a plugging mechanismand a detection mechanism. The clamping mechanism can selectively clamp the two ends of a workpiece. The plugging mechanisms are located on the two sides of the clamping mechanism and can selectivelyseal and plug the two ends of the workpiece. The detection mechanism is communicated with one end of the plugging mechanism, introduces gas into the plugging mechanism and is used for detecting the air tightness of the workpiece. The clamping mechanism, the plugging mechanism and the detection mechanism are matched with one another; the workpiece can be fixed through the clamping mechanism; the sealing and plugging effect of the plugging mechanism is prevented from being affected by movement of the workpiece when the plugging mechanism moves in the direction close to the workpiece and plugs the workpiece, so air tightness detection can be achieved on the workpiece in a sealed state through the detection mechanism; the detection structure is more accurate, and therefore the detection precision is improved.

Description

technical field [0001] The invention relates to the technical field of automobile parts production and manufacturing, in particular to an air tightness detection device. Background technique [0002] As a very important part of the vehicle, the oil return pipe of the automobile has high requirements on its airtightness, and no leakage is allowed during use. Therefore, after the production of the oil return pipe is completed, it is necessary to conduct an air tightness test to meet the quality requirements. [0003] In the existing oil return pipe air tightness testing equipment, both ends of the oil return pipe are usually blocked with plugs to form a closed sealing environment, and then the oil return pipe is connected with an external air source to observe whether there is any air leakage. Because the pipeline of the oil return pipe is not a straight pipe but a curved pipe in order to match other auto parts, it is difficult to realize the positioning of the oil return pip...

AI Technical Summary

Problems solved by technology

Because the pipeline of the oil return pipe is not a straight pipe but a curved pipe in order to match other auto parts, it is difficult to realize the positioning of the oil return pipe, which makes the airtightness between the plug and the oil return pipe not good , affecting measurement precision and accuracy

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