Sewing machine presser foot capable of being quickly disassembled and assembled

The sewing machine presser foot comprises a pressing rod and a presser foot body, a positioning hole is machined in the lower end of the pressing rod, a U-shaped groove is machined in the upper end of the presser foot body, the U-shaped groove and the positioning hole are connected and fixed through a springback type connector, and the springback type connector comprises a positioning rod, an inner sliding sleeve and an outer positioning sleeve. A positioning rod is installed on the U-shaped groove and the positioning hole in a penetrating mode, a positioning disc is arranged at the end of the positioning rod, a spring is sleeved on the positioning rod, a threaded section is arranged on the positioning rod sleeved with the spring, an inner sliding sleeve is sleeved on the positioning rod on the outer side of the spring, a positioning flange is arranged on the inner sliding sleeve, and one end of an outer positioning sleeve is sleeved on the inner sliding sleeve. A threaded hole is machined in the center of th