| 摘要 |
PURPOSE:To securely change a die with a simple motion and structure by operating the clamping member utilizing a wedge effect and the connection shaft provided with an eccentric piece. CONSTITUTION:A slanted groove 29 is provided on the left side face of the upper part die 17 and the inclination is formed so as to become deeper gradually toward the lower side from the upper side. In opposition to this groove 29 the clamp lever 33 having the locking face 45 locking to the groove 29 is supported freely turnably to a pin 37 and energized in a clockwise direction by a spring 39. As an unclamping device 23, the connection shaft 49 provided with an eccentric piece 51 is arranged. With this composition the upper part die 17 is fitted and the detaining face 45 of a lever 33 is pushed to the groove 29, then, strongly pinched by a wedge effect, and in case of removing, the die 17 can be changed at one time by rotating the shaft 49 to the right and rotating the lever 33 by the piece 51.
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