Core-pulling anti-blocking connecting rod for die-casting mold oil cylinder

The core-pulling anti-blocking connecting rod comprises an outer connecting rod body, guide holes are formed in the upper end and the lower end of the outer connecting rod body correspondingly, connecting bases are movably connected to the upper end and the lower end of the outer connecting rod body correspondingly, through holes are formed in the inner sides of the connecting bases, and the through holes are communicated with the through holes. Symmetrically-arranged threaded connecting rods are movably connected into the outer connecting rod, the outer sides of the threaded connecting rods penetrate through the guide holes and the through holes in sequence and extend into the connecting bases, first limiting plates are fixedly connected to the inner sides of the threaded connecting rods,and second limiting plates are fixedly connected to the outer sides of the threaded connecting rods. And sliding grooves which are symmetrically formed up and down are formed in the inner sides of the left end and the right