Clamp unit, feeding and discharging supporting device and cut-off machine

According to the clamp unit, the feeding and discharging supporting device and the cut-off machine, the flexible clamping module and the rotary driving mechanism are arranged on the clamp unit, silicon rods can be cut off more stably, the cutting precision is improved while the cutting efficiency is guaranteed, and the phenomenon of edge breakage of the silicon rods in the cut-off process is reduced; in addition, a supporting mechanism and an axial driving mechanism are arranged on the feeding and discharging supporting device, stable feeding and discharging supporting of the silicon rods can be achieved, supporting switching of the silicon rods before the cutting assembly is started and after cutting is completed can be achieved, and transportation of the silicon rods to be machined can be facilitated through the axial driving mechanism; through the design, the cutting-off efficiency and the cutting-off quality of the cutting-off machine can be effectively improved. 本发明提供一种夹具单元、上下料支撑装置及截断机，通过在夹具单元上设置柔性夹持模块和旋