Air-cylinder-rod and rotating-shaft connecting structure of sewing-machine pressing rotating mechanism

The invention discloses an air-cylinder-rod and rotating-shaft connecting structure of a sewing-machine pressing rotating mechanism. The air-cylinder-rod and rotating-shaft connecting structure is characterized in that a first connecting shaft and a second connecting shaft are rotationally installed on a connecting block assembly and used for being connected with an air cylinder rod and a rotatingshaft respectively, the head of the first connecting shaft and the head of the second connecting shaft mutually abut against to form a pressing-contact and rotating-separation structure. According tothe air-cylinder-rod and rotating-shaft connecting structure, the two axial-pressing-contact and radial-rotating-separation connecting shafts are framed by the connecting block assembly, and the twoconnecting shafts are connected with the air cylinder rod and the rotating shaft respectively; when the air-cylinder-rod and rotating-shaft connecting structure is used, combined with an air-cylinder-rod anti-rotating air cylin