Automatic sizing cutting device

An automatic sizing cutting device for cutting a continuously supplied band-shaped member at a predetermined length to obtain a band-shaped piece, comprising:

• a conveyance unit which conveys the band-shaped member;
• a measuring device which measures a conveyed length of the band-shaped member conveyed by the conveyance unit;
• a rotary cutter arranged downstream of the conveyance unit so as to oppose one surface of the band-shaped member and having at least one cutting blade on an outer circumferential surface thereof, the rotary cutter being rotationally driven by a driving motor;
• a die roller arranged on a side of the band-shaped member opposite to the rotary cutter, and which rotates in a direction opposite to a rotation direction of the rotary cutter;
• and
• an elastic member which urges the die roller toward the rotary cutter,
• wherein the rotary cutter is controlled to rotate in accordance with the conveyed length of the band-shaped member measured by the measuring device, and is controlled such that circumferential speeds of the rotary cutter and the die roller at least when the cutting blade of the rotary cutter cuts the band-shaped member are equal to a conveying speed of the band-shaped member.