Automatic water meter assembling device

The invention relates to the technical field of water meter assembling, in particular to an automatic water meter assembling device which comprises an assembling production line, a control unit and visual detection devices arranged on the sides of all stations, the assembling production line is provided with a plurality of sets of workpiece conveying platforms circulating among different stations, and the workpiece conveying platforms are provided with clamping devices used for fixing base meters; based on the assembly sequence of all assemblies of the water meter, a base meter feeding assembly, a filter screen installation assembly, an impeller box installation assembly, an impeller and impeller cover installation assembly, a character wheel box installation assembly, an O-shaped ring installation assembly, a sight glass installation assembly, a meter cover pre-tightening assembly and a fastening assembly for fastening a meter cover according to preset torque are further sequentially arranged along the assem