Injection molding machine with injection molding head convenient to replace

The utility model is applicable to the technical field of injection molding machines, and provides an injection molding machine with an injection molding head convenient to replace, which comprises a charging barrel, an injection molding head and a driving device, the heating ring is arranged in the charging barrel shell in a sliding manner; the rotating ring is rotationally arranged in the charging barrel and is coaxial with the heating ring; the mounting end cover is arranged on the inner side of the rotating ring and is fixed with the rotating ring through a fastener; the driving mechanism is arranged on the charging barrel and is used for driving the rotating ring to rotate; the push rod penetrates through the swivel shell and is fixed with the driving mechanism; the cutting knife is arranged on the charging barrel and is used for cutting the solidified fluid; the fixing mechanism is arranged on the heating ring and used for fixing the heating ring and the cutting knife; the injection molding head is in t