Cylinder head cover assembly assembling device

The utility model discloses an assembling device for an air cylinder head cover assembly. The assembling device comprises a positioning pin penetrating device, a feeding device, a cylinder cover pre-tightening device and a cylinder cover locking device which are sequentially arranged in the conveying direction of a conveying belt. The positioning pin penetrating device is used for respectively inserting positioning pins into two diagonal screw holes of the cylinder block; the feeding device is used for enabling a gasket and an air cylinder cover to penetrate through a pin in sequence to be stacked on the top face of an air cylinder base. The cylinder cover pre-tightening device is used for inserting screws into the other two diagonal screw holes of the cylinder block and pre-tightening the screws, pulling away the positioning pins and inserting the screws into the two diagonal screw holes of the cylinder block and pre-tightening the screws; and the cylinder cover locking device is used for tightening all scre