Automobile part airtightness detection mechanism

Abstract

The invention discloses an automobile part airtightness detection mechanism comprising a box body and a pipeline; a cavity used for placing a to-be-detected part is arranged in the box body; two endsof the pipeline are respectively connected with the to-be-detected part; the pipeline is connected with a solenoid valve, an air heater, an air compressor and an air pressure sensor connected in order; the solenoid valve, the air heater, the air compressor and the air pressure sensor are arranged outside the box body and mutually independently work; a water tank and a vacuum air exhauster are arranged outside the box body; the water tank is connected with the box body via a pipeline, wherein the pipeline is a vacuum air tube; a unidirectional air valve and a three-dimensional solenoid valve are arranged on the vacuum air tube; the three-dimensional solenoid valve is connected with the vacuum air exhauster. An existing device can only detect the airtightness under normal temperature and pressure, and deformation easily happens; the automobile part airtightness detection mechanism can solve said problems, and can provide a better detection effect via a two-time detection process.

Description

technical field [0001] The invention discloses a mechanism capable of detecting the airtightness of auto parts and relates to the technical field of auto parts manufacturing. Background technique [0002] As a daily means of transportation, cars have entered thousands of households. Among the many accessories that make up a car, some of them are required to have good sealing performance. Auto parts with poor sealing will affect the normal operation of the car. In severe cases, Even cause traffic safety accidents, therefore, the air tightness detection of this kind of auto parts is particularly important. [0003] In the prior art, two methods are usually used to detect the air tightness of auto parts. One is to use high-pressure gas to fill the auto parts, and to detect whether there is a gap in the auto parts by observing the change of internal air pressure; Auto parts with high-pressure gas are immersed in water, and whether there is leakage of the auto parts is detected ...

AI Technical Summary

Problems solved by technology

[0005] The mechanism for detecting the airtightness of auto parts disclosed by the present invention solves the problem of easy deformation due to uneven heating and uneven force when testing in simulated real environment

It achieves two methods of detection at the same time, and also solves the problem of uneven heating and easy deformation when simulating the real environment for detection, and also solves the problem of inaccurate detection only under normal pressure

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