Jet printing head provided with rotary nozzle

The invention relates to a jet printing head provided with a rotary nozzle. The jet printing head provided with the rotary nozzle comprises a nozzle assembly arranged at the front end of a shell. Thenozzle assembly is fixedly connected with the shell through a base plate. The jet printing head further comprises a nozzle rotating device. The nozzle rotating device is composed of a micro gear motor, a plurality of guide wheels, a tooth disc and a travel switch. The tooth disc is arranged between the nozzle assembly and the base plate. The guide wheels are arranged in the circumferential direction of the tooth disc and are engaged with the tooth disc. One of the guide wheels is driven by the micro gear motor to drive the tooth disc and the nozzle assembly to rotate, and the rotating angle iscontrolled through the travel switch. According to the jet printing head, the nozzle can be rotated according to jet printing requirements, so that the jet printing direction is changed, the font height is adjusted; and the j