With the inside diameter adjusting device of the wound core and expanding

摘要

PROBLEM TO BE SOLVED: To adjust the inner diameter of a wound core relatively easily.;SOLUTION: An inner diameter adjusting device 10 of wound core comprises an inner circumference supporting device 12 having a plurality of support pieces 14 which support an annular wound core 11 at the inner circumference thereof by widening the intervals, an outer circumference gripping device 21 having a plurality of contact pieces 24 which can abut against the outer circumference of the wound core by shortening the intervals, and a gripping device rotating means 31 for rotating the outer circumference gripping device 21 having a plurality of contact pieces 24 abutting against the outer circumference of the wound core forward or reversely around the center of rotation, i.e. the central axis of the wound core. Preferably, an inner diameter sensor 38 which measures the inner diameter of the wound core, and a controller 41 which controls the gripping device rotating means 31 based on the detection output from the inner diameter sensor 38 are provided.;COPYRIGHT: (C)2012,JPO&INPIT