Bottle blank clamping mechanism

The utility model provides a bottle blank clamping mechanism which comprises a clamping mechanism and an opening and closing driving mechanism, and the opening and closing driving mechanism drives the clamping mechanism to clamp or release a bottle blank. The opening and closing driving mechanism is arranged at the end, opposite to the clamping end, of the clamping mechanism and drives the clamping end of the clamping mechanism to conduct opening and closing actions through lifting actions. According to the utility model, by arranging the opening and closing driving mechanism of the single-shaft series-connection multi-hinge unit, the clamp units are rotationally connected in series from the bottoms of the clamp units, and the tops of the clamp units can be driven to be synchronously opened and closed through short lifting action, so that the structure is greatly simplified and improved, and meanwhile, the opening and closing action is rapid, convenient and stable; and in cooperation with the mechanical self-