The invention provides a steel strip automatic conveying, winding and welding mechanism. The mechanism comprises a working platform, and is characterized by further comprising a steel strip conveyingcontrol mechanism arranged on one side above the working platform; the steel strip conveying control mechanism comprises a feeding device, a bending device, a conveying device, a cutting and angle folding device, a stop device and a pressing device arranged in sequence from a feed end to a discharge end; a winding and welding mechanism is arranged at a discharge end of the steel strip conveying control mechanism, and comprises a servo electric cylinder jacking part, a rotary winding part and a welding part; the rotary winding part and the welding part are adjacently arranged above the workingplatform; and the servo motor jacking part is arranged under the working platform, and is positioned at the lower part of the rotary winding part. Through winding of steel strips on a mold core tool of pre-inserted magnetic steel, steel strip rings, magnetic steel and mold cores are tightly bonded for direct injection molding, so that the magnetic steel assembly precision is guaranteed, and the higher production efficiency is guaranteed.