To automatically cut and remove a sharp standing seam joint end occurring at the winding terminal side end of a spiral pipe.
This cutting device comprises rotation rollers 12 and 12 for rotating the spiral pipe 1 around the pipe axis at a predetermined rotation torque, a stopper 22 disposed closely to the outer peripheral surface of the winding terminal side end of the spiral pipe 1 on the rotation rollers 12 and 12, and a nipper 17 disposed movably back and forth in the pipe axis direction at a position spaced from the stopper 22 by a cutting width. The sharp standing seam joint end 3b of the spiral pipe 1 is engaged with the stopper 22 to stop the rotation of the spiral pipe 1 while slipping it, and the nipper 17 is progressed during the stop to cut the sharp standing seam joint end 3b.
FUJII TAKESHI
FUJII KENGO
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