Auxiliary feeding device of pipe bending machine

The utility model relates to the field of pipe benders, in particular to an auxiliary feeding device of a pipe bender, which comprises a connecting component, a base fixedly mounted on a bed body of the pipe bender, a sliding seat slidably connected onto the base and a supporting unit fixedly connected onto the sliding seat. The sliding seat can linearly reciprocate on the base in the first horizontal direction, one end of the connecting assembly is fixedly connected to the sliding seat or the supporting unit, and a sliding part is arranged at the other end of the connecting assembly and used for being installed in a guide groove formed in the bottom end of a follow-up mechanism of the pipe bending machine in the axial direction of a pipe fitting to be machined. The sliding seat and the supporting unit can synchronously move in the first horizontal direction along with the follow-up mechanism; the top end of the supporting unit is used for supporting the tail end of a to-be-machined pipe fitting. The supporti