Manual and automatic conversion type folding mechanical device based on screw transmission and working method of manual and automatic conversion type folding mechanical device

The invention belongs to the field of folding mechanical transmission system structures, and particularly relates to a manual and automatic conversion type folding mechanical device based on screw transmission and a working method thereof.The device comprises a base, a driving device and a transverse carrying table are arranged on the base, and the transverse carrying table is connected with a third folding device through a first transverse sliding device and a first longitudinal sliding device; the second folding device and the first folding device are sequentially arranged on the third folding device, the folding devices are in transmission through cooperation of a screw and a transmission block, and the transmission precision is high; the output end of the driving device is connected with the first screw, the second screw or the third screw, the driving device is connected with the second transverse sliding device, the second transverse sliding device is connected with the second vertical sliding device, a