Hub motor assembly line

The invention discloses a hub motor assembly line, and belongs to the field of motor production. A hub motor assembly line comprises a plurality of assembly process devices and at least one or more positioning tool jigs used for placing hub motors. The upper-layer motor assembly line is provided with a plurality of assembly stations according to the assembly sequence so as to assemble and form the hub motor; the lower-layer tool jig circulating line is used for operating and recycling the positioning tool jig; the two lifting backflow devices are arranged at the two ends of the upper-layer motor assembly line and the two ends of the lower-layer tool jig circulation line correspondingly, and the lifting backflow devices are used for transferring the positioning tool jigs between the upper-layer motor assembly line and the lower-layer tool jig circulation line, so that circulation type use of the positioning tool jigs is achieved. The multiple assembly process devices comprise a drum cover pressing machine, a s