Heat transfer printing machine and method for curved-surface soft material

The invention discloses a heat transfer printing machine and method for a curved-surface soft material. The heat transfer printing machine comprises a film releasing mechanism, a heat transfer printing mechanism and a film collecting mechanism. The heat transfer printing mechanism is arranged between the film releasing mechanism and the film collecting mechanism and comprises a controller, a cylinder, profiled heat rollers and supporting driven wheels. The cylinder is connected with the controller. The profiled heat rollers are arranged at the bottom of the cylinder. The supporting driven wheels are arranged below the corresponding profiled heat rollers. A pattern section to be subjected to heat transfer printing of film paper is located between the profiled heat rollers and the supporting driven wheels. A piece of hard metal is arranged in the curved-surface soft material to be subjected to heat transfer printing in a sleeved mode. The curved-surface soft material to be subjected to heat transfer printing is