| 摘要 |
A changeable die is provided to minimize the size of the die by loading a hook into the die or projecting the hook to the outside of the die during a movement or a pressing operation of the die, reduce production costs by rotating the hook using dead load of the die, and prevent interference of the die with a structure during the press operation by loading the hook into the die. A changeable die comprises: a hook(110) rotatably formed on one side of a die(100); a guide part(120) which is projected to a lower side of the die, and which is movable in the vertical direction by elastic force; and a rotary unit for rotating the hook by a vertical movement of the guide part. The hook has a spiral groove formed on a side face thereof, and the rotary unit is a projection formed on the guide part and inserted into the groove. The projection has a ball bearing formed on an end portion thereof.
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