| 摘要 |
PROBLEM TO BE SOLVED: To shorten the manufacturing time for a die board and to simplify manufacturing process by forming a plurality of notches on blade surface parts and providing blades curved corresponding to a curved surface of a supporting part. SOLUTION: First blades parts Y1, Y2, Y3 are constituted of blade bottom parts in which a plurality of notch parts 12c are formed and blade upper parts in which no notch parts are formed. The blade bottom parts are curved in a cutting edge direction so as to correspond to a curved surface of a supporting part 20 of a rotary die board and thereby have forms curved in the cutting edge direction, At this time, because second blade parts X1, X2 are mounted in a direction perpendicular to a rotary shaft of the supporting part 20, the blades parts X1, X2 are not required to have curved forms and thereby are maintained as they are without forming notch parts. An integral type blade provided with the first blade parts Y1, Y2, Y3 and second blade parts X1, X2 curved in the cutting edge direction so as to correspond to a stage of the supporting part 20 of the die board is fixed to the supporting part 20.
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