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    • 10. 发明申请
    • Method and device for unwinding yarn from package
    • 从包装中退绕纱线的方法和装置
    • US20060169828A1
    • 2006-08-03
    • US11342558
    • 2006-01-31
    • Harutoshi Sawada
    • Harutoshi Sawada
    • B65H49/34
    • B65H49/34B65H2701/31
    • When an unwinding device based on a friction roller system is used to unwind a yarn from a package while applying unwinding tension to the package, the package may collapse at the opposite ends of the package, resulting in inappropriate unwinding. An unwinding device includes a friction roller 3 that contacts with a peripheral surface of a winding package 1 to rotate the package 1 and a yarn guide roller 4 that guides an elastic yarn 5 unwound and drawn out from the package 1 in the radial direction of the package as a result of rotation of the friction roller 3. A friction belt 11 is provided on an axial part of the friction roller 3 so that the friction roller 3 contacts with only a central portion 1b of the package 1 which is located inside opposite axial ends 1a, 1a of the package 1 and which has a substantially fixed outer diameter, and the friction belt 11 has a larger diameter than a cylinder 10 and is located radially outside the cylinder 10.
    • 当使用基于摩擦辊系统的退绕装置从包装中退绕纱线同时向包装件施加退绕张力时,包装可能在包装的相对端处折叠,导致不适当的展开。 退绕装置包括摩擦辊3,该摩擦辊3与卷绕包装1的周面接触以使包装1旋转;导丝辊4,其引导弹性纱线5,弹性纱线5从包装1沿径向方向退绕并拉出 作为摩擦辊3的旋转的结果,摩擦带11设置在摩擦辊3的轴向部分上,使得摩擦辊3仅与包装1的位于相对的内侧的中心部分1b接触 包装1的轴向端部1a,1a,其具有基本上固定的外径,并且摩擦带11具有比圆筒10更大的直径并且位于圆筒10的径向外侧。