Roll transfer device and method

A roll transfer device comprising:

• a pair of holding units disposed to be spaced apart from each other in a first direction, supporting a roll core seated thereon;
• and
• a pair of rotation units disposed on both sides of the roll core along the first direction,
• wherein the rotation unit includes
• a rod extended in the first direction toward the roll core,
• a pad provided on one side of the rod toward the roll core, including a key coupled to a key groove formed in the roll core,
• a first driving member provided to linearly move the rod in the first direction, and
• a second driving member provided to rotate the rod.

A roll transfer method comprising:

• seating a roll core on a pair of holding units at a position between the pair of holding units spaced apart from each other in a first direction to face each other by an unmanned transport vehicle or a forklift;
• aligning a position of the roll along the first direction by the pair of rotation units disposed on both sides of the roll core;
• coupling one or more keys provided in the pair of rotation units to one or more key grooves formed in the roll core by rotating the pair of rotation units in a state that the rotation units are inserted into the roll core, and thus rotating the roll together with the pair of rotation units;
• recognizing a unique identification number for a material wound on the roll by a barcode reader;
• and
• transferring the roll to a stacker crane by moving the pair of holding units in a second direction.