| 摘要 |
PROBLEM TO BE SOLVED: To simplify replacing work of a cut blade in an ultrasonic type cut device. SOLUTION: A protruded part 3 is provided in the center of an upper surface in a hook type cut of a hook type patch jig 1 provided with the cut of hook type as viewed by side, and a cut blade 17 can be swiveled with an abutting point of an upper surface central part of the cut blade 17 to the protruded part 3 serving as a fulcrum in a condition of one side surface of the cut blade 17 abutting to a vertical surface 4 of the cut. The right/left of the cut blade 17 can be fixed by set bolts 8, 8, so that the cut blade 17 can be fixed to a cut blade fixing base 10 with the hook type patch jig 1.
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