To provide a low-cost scraper with a nominal diameter of 75A or less for a resin pipe to cope with a situation even when the bore of the resin pipe is changed and perform uniform peeling in a peripheral direction.
A tubular substance 3 is fitted in the inner surface of a resin pipe 4 and a screw threadedly engaged with screw threaded in a shaft 2 is threaded. A cutter holder 6 is fixed on the shaft 2 and rotated togetherwith. A cutter 5 is fixed at the cutter holder 6 movably in a direction extending orthogonally to the axis of the shaft 2. The tubular substance 3 is inserted in the resin pipe 4 and fitted therein and fixed thereat. By regulating a screw mechanism 7, the cutter 5 is matched with the outer peripheral surface of the resin pipe 4 and the shaft 2 is rotated. The cutter 5 is spirally moved and peeling of the surface of the resin pipe 4 is effected.
ARIGA SHIRO
MURATA HISASHI
TSURUTA HIDEKAZU
