US 12,461,000 B2
Rolling apparatus and evaluation system for evaluating durability of flexible material
Ki Yong Lee, Cheonan-si (KR); Hyeon Bong Moon, Cheonan-si (KR); and Ho Moon You, Cheongju-si (KR)
Assigned to FlexiGO INC., Cheonan-si (KR)
Filed by FlexiGO INC., Cheonan-si (KR)
Filed on Aug. 23, 2022, as Appl. No. 17/893,861.
Application 17/893,861 is a continuation of application No. PCT/KR2020/013943, filed on Oct. 13, 2020.
Prior Publication US 2022/0404251 A1, Dec. 22, 2022
Int. Cl. G01N 3/20 (2006.01); B21C 47/20 (2006.01)
CPC G01N 3/20 (2013.01) [B21C 47/20 (2013.01); G01N 2203/0278 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A rolling apparatus for evaluating durability of a flexible material, the rolling apparatus comprising:
a base unit;
a rolling unit rotatably coupled to the base unit such that the flexible material is wound on a winding shaft provided in the rolling unit; and
a sliding unit which grips an end of the flexible material wound around the rolling unit and is spaced apart from the rolling unit to be slidably coupled to the base unit,
wherein a speed of the sliding unit is set to a predetermined value in a direction in which the flexible material is pulled,
wherein a speed of the rolling unit for an unrolling operation and a rolling operation of the rolling unit is controlled such that the flexible material maintains a flat state, and
wherein a sliding motor for sliding movement of the sliding unit has a rotating speed greater than a rotating speed of a rolling motor for rotation of the rolling unit,
wherein the sliding unit comprises a slider, a sliding changing part configured to linearly move the slider along a longitudinal direction of the base unit, and a connecting bracket provided at the slider to face toward the sliding changing part and detachably coupled to the sliding changing part,
wherein the rolling unit comprises a reciprocating unit and a shaft coupler, which is detachably coupled to the winding shaft, and
wherein the reciprocating unit moves along a lateral direction of the base unit, which is perpendicular to the longitudinal direction, and configured to push the base unit in the lateral direction so as to decouple the connecting bracket from the sliding changing part and to assist releasing of the winding shaft from the shaft coupler.