Airtight leak detection device for automobile pipe fittings and leak detection method thereof

Abstract

The invention discloses an automotive pipe airtightness detecting device which comprises the components of an error proofing sensor, error proofing cavities, automotive pipe conveying devices, a pipe clamp, leakage detecting cylinders, positioning cylinders, marking cylinders and an alarm system. The pipe clamp is connected with a plurality of error proofing cavities. Each error proofing cavity is provided with an automotive pipe conveying device. The automotive pipe conveying devices are used for conveying the automotive pipes of which the airtightnesses are to be detected to corresponding error proofing cavities. Each error proofing cavity corresponds with a fixed number. Each automotive pipe of which the airtightness is to be detected has a unique code. The code is in matching relationship with the fixed number which corresponds with one error proofing cavity. When the code of the automotive pipe, which is detected by the error proofing sensor, matches the number of the error proofing cavity, the leakage detecting cylinder states for detecting the airtightness of the automotive pipe. If the airtightness is qualified, the marking cylinder marks the automotive pipe as qualified; and otherwise, the marking cylinder marks the automotive pipe as unqualified.

Description

technical field [0001] The invention relates to an airtight leak detection device for automobile pipe fittings and a leak detection method thereof. Background technique [0002] Air-tight leak detection is to pressurize or evacuate the workpiece to be tested, and then sample and analyze its pressure, differential pressure or flow (between the comparison volume) to determine whether the workpiece is leaking. This method is simple in structure and convenient in detection. It is fast, clean, accurate, low cost, and highly automated, and has attracted people's attention. The traditional airtightness leak detection machine, when testing product airtightness and collecting leakage data, the leak detection value of each product cannot be saved. In addition, the leak detection auxiliary mold has no error prevention function, which may cause multiple leaks when testing products. Products use the same test channel parameters for leak detection, which is prone to confusion and leads t...

AI Technical Summary

Problems solved by technology

[0005] The traditional airtightness leak detection machine, when testing product airtightness and collecting leakage data, the leak detection value of each product cannot be saved. In addition, the leak detection auxiliary mold has no error prevention function, which may cause multiple leaks when testing products. Products use the same test channel parameters for leak detection, which is prone to confusion and leads to errors in leak detection data, which not only affects the accuracy of product inspection data, but also increases the risk of defective products flowing out

Images