The invention relates to the technical field of automatic assembling, in particular to an automatic assembling device for an
air filter shell. The device comprises a
workbench and a conveyor, and further comprises a bearing jig, a rotating device, a lower shell feeding device, an upper shell feeding device, an installing device, a finished product unloading device and a lower shell position detecting device, the rotating device is arranged at the top end of the
workbench, the rotating device comprises a
rotating disc, the bearing jig is arranged at the top end of the
rotating disc, the lower shell feeding device, the upper shell feeding device, the installing device and the finished product unloading device are all installed at the top end of the
workbench and arranged at the edge of the
rotating disc at equal angles in the circumferential direction of the rotating disc, the lower shell position detecting device is arranged at the side of the workbench, and due to cooperation of the bearing jig, the rotating device, the lower shell feeding device, the upper shell feeding device, the installing device, the finished product unloading device and the lower shell position detecting device, the problems that installing is slow and the labor cost is large are solved.