Pressure head device of bonding machine

The invention provides a pressure head device of a bonding machine, which comprises an air cylinder, a pressure head and a pressure head, a spherical part is arranged at one end of the spherical joint, and the spherical part can be in contact with the stop pin; one end of the bearing is connected with the other end of the spherical joint; one end of the connecting shaft is connected with the other end of the bearing through a bolt, the connecting shaft is mounted in a middle cavity of the DD motor, and a vertical convex strip is arranged on the outer surface of the connecting shaft; the linear bearing comprises a base and a barrel which are integrally formed, the barrel is vertically arranged in the middle of the base, the base is connected with the DD motor through a screw, the barrel is connected to the periphery of the connecting shaft in a sleeving mode, and the shape of the inner surface of the barrel is matched with that of the outer surface of the connecting shaft. The structure is optimized, adjustmen