Patent ID: 7887006
Filing Date: 2011-02-15
Classification: B65H

Abstract:
1. A winding reel for a band-shaped material, the winding reel comprising: an inner circumferential member comprising an inner circumferential member tapered portion having a first end portion and a second end portion at an opposite longitudinal end from the first end portion, the inner circumferential member tapered portion having an outer diameter tapered such that the outer diameter decreases from the first end portion toward the second end portion; an outer circumferential member having an outer circumference and attached to an outer circumference of the inner circumferential member such that the outer circumferential member rotates integrally with said inner circumferential member and is configured to receive the band-shaped material wound on the outer circumference; a fixing member configured to fix releasably said outer circumferential member to said inner circumferential member, wherein said outer circumferential member comprises an outer circumferential member tapered portion with an inner diameter tapered along a longitudinal extent of the winding reel such that the inner diameter decreases from a direction of said first end portion toward said second end portion and said outer circumferential member tapered portion is configured to move so as to expand or contract said outer circumferential member in a radial direction transverse to the longitudinal extent of said outer circumferential member; said outer circumferential member tapered portion is attached to said inner circumferential member by being supported on said inner circumferential member tapered portion; and a radial biasing unit having a longitudinal extent positioned in a direction transverse to the longitudinal extent of the winding reel and configured to exert in a direction of the longitudinal extent of the radial biasing unit a biasing force for moving said outer circumferential member in the direction of the longitudinal extent of the winding reel toward said second end portion.