The invention is, a plurality of guide blocks for guiding the sliding movement of the axis of rotation of the plurality of the fixed block and the take-up core for fixing the winding core of the hollow fiber is arranged continuously in a predetermined pattern along the rotation axis direction it relates to an air shaft , in the sheet-like fabric on the winding core to the air shaft for taking up in a roll form, a plurality of guide blocks each, receiving openings which are provided groove; Guide member which part is pivotally mounted on the receiving groove so as to project through the openings, in contact with the inner peripheral surface of the winding core and, optionally, guiding the sliding movement in the rotational axis direction of the winding core; And the receiving groove to be interposed between the guide member pivotally mounted to a receiving recess, it characterized in that it comprises a rotary support member for supporting the rotation guide member.
The present invention according to is, the winding core is a friction force generated when moving the sliding minimized the air shaft to sliding can be moved, a heavy weight sheet-like fabric according to the air shaft with the small the winding core strength in the take-up core even when the take-up it is possible to easily remove the core from the air take-up shaft.