| 摘要 |
PROBLEM TO BE SOLVED: To provide a spray-can punching device which can punch a hole on plural spray-cans having different outer diameters, and can improve work efficiency while assuring safety of an operator.SOLUTION: A drilling tool 6 fixed to a connection base material 5 of a spray-can punching device has: a drilling needle 7 fixed to the connection base material 5 side; an external cylinder 8 which is so located as to cover the drilling needle 7, one end 8a of which is fixed to the connection base material 5 side and the other end of which is equipped with a flange part 8b; a movable rod 9 which is so supported on the flange part 8b of the external cylinder 8 as to be slidable in a vertical direction; a pressure plate 11 which is fixed to one end 9a of the movable rod 9; a middle cylinder 12 of which one end 12a contacts the pressure plate 11 and which is so located as to be vertically movable inside the external cylinder 8; an internal cylinder 13 which is so located inside the middle cylinder 12 as to cover an outer periphery of the drilling needle 7; and a spring member 14 which is located over an inner side of the external cylinder 8 and between the middle cylinder 12 and the internal cylinder 13.SELECTED DRAWING: Figure 4 |
