| 摘要 |
PROBLEM TO BE SOLVED: To simplify an operation and to prevent turning in the left and right directions when an upper die clamp is attached to a holder main body. SOLUTION: An upper die supporting part 9 which supports an upper die 5 is provided in the lower part of a holder main body 7, a mount 19 is provided in an upper front surface of the holder main body, a pressurizing member 37 which pressurizes the upper die against the upper die supporting part is provided in the lower part of an upper die clamp 11 which is supported so as to lock by the holder main body and a locking projection 11P which is freely locked to a fall preventing groove 5G provided in the upper die is provided, a clamp force imparting means 13 which pressurizes an upper clamp and imparts clamp force for clamping the upper die is provided, a clamp operating means 15 which is capable of transmitting clamp force by the clamp force imparting means to the upper die clamp is provided, a released state holding means which freely holds the upper die clamp in a released state is provided, a groove 55 is provided in the lower part of the mount 19, and a left and right turning preventing member 57 which engages with the groove 55 is provided in the upper part of the upper die clamp 11.
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