Lower die bracket of cylindrical battery packaging machine

The invention discloses a lower die bracket of a cylindrical battery packaging machine. The lower die bracket of the cylindrical battery packaging machine comprises a lower die rotating device and a lower die lifting device, wherein a lifting cylinder of the lower die lifting device is fixed to a lower die top plate of the lower die rotating device through a lifting cylinder connection plate; the lower die rotating device comprises a lower die bottom plate, lower die connecting posts, a first mounting block, a connecting post, a second mounting block, an induction device, a buffer device and a rotating device; induction iron of the induction device is arranged at one end of an upper plane of the lower die top plate; buffer connection plates of the buffer device are arranged at the lower ends of the two lower die connecting posts at the front side; and two lower die connecting posts at the left side and the right side are all connected with push-pull cylinder mounting racks of the rotating device. In the manner, the lower die bracket is compact in structure, and can automatically lift and rotate; and packaging and grabbing of batteries are facilitated.