| In view of the shortcomings of the current water immersion detection method for muffler air tightness detection, such as slow speed, low efficiency, easy corrosion on the surface of muffler and affecting the quality of muffler, a new muffler air tightness detection equipment is developed. The equipment consists of three systems: mechanical transmission, pneumatic control and PLC control. The design takes the field requirements into full consideration. The design adopts the integrated design of machine, electricity and gas, selects Mitsubishi FX2N series PLC as the controller, collects input signals for PLC through magnetic sensor and pressure sensor, and realizes air tightness inspection of automobile muffler by PLC programming Measurement. During the detection, the muffler air tightness detection and tooling clamping are linked to form an interlock, so that the qualified muffler can be released by the clamping mechanism, while the unqualified muffler needs a special person to open the unlocking button of the unqualified muffler with a key, so as to ensure the factory quality of the muffler. In addition, the equipment has the functions of manual, automatic, fault alarm and display, which improves the working efficiency of the equipment and facilitates the overhaul and maintenance of the equipment. |