Vertical threading machine for deformed steel bars

The invention relates to the field of tapping equipment, in particular to a vertical threading machine for deformed steel bars, which comprises a rack, and a placing device and a tapping device are arranged on the rack; the placing device comprises a floating lower mounting plate arranged on the rack; a clamping mechanism is arranged on the floating lower mounting plate; the tapping device comprises a floating upper mounting plate, and a threading mechanism is arranged on the floating upper mounting plate; the threading mechanism comprises a quick-change thread sleeve arranged on the floating upper mounting plate, and the quick-change thread sleeve is connected with a driving mechanism; the driving mechanism can drive the quick-change screw sleeve to rotate; the clamping mechanism comprises a centering clamp arranged on the floating lower mounting plate; the quick-change screw sleeve and the centering clamp are oppositely distributed; the vertical threading machine disclosed by the invention can be used for t