| 摘要 |
PROBLEM TO BE SOLVED: To provide a punching device for a beverage container which can easily and securely form a hole for draining remaining beverage or the like sufficiently in the beverage container without breaking the beverage container.SOLUTION: A pair of punching rotary drums 13, 15 is arranged. The first punching rotary drum 13 is formed of a first drum main body, and a first punching ring having first punching edge arrays 41 fixed to an outer circumference surface of the first drum main body. The arrays are arranged so that phases of the adjacent first punching edge arrays 41 are shifted from each other. The second rotary drum 15 is formed of a second drum main body, and a second punching ring having second punching edge arrays 43 fixed to an outer circumference surface of the second drum main body. The arrays are arranged so that phases of the adjacent second punching edge arrays 43 are shifted from each other. First punching edges 45 and second punching edges 47 are located alternately in an axial direction. |
