Patent ID: 9359098
Filing Date: 2016-06-07
CPC Classification: B65B,B65C

Claim Text:
1. A label opener that is mounted in a fitting device that opens a folded flat label into an opened label and fits the opened label onto a columnar target body, the label opener comprising: a first suction rod and a third suction rod that extend in a direction of a height of the folded flat label and are disposed at an interval in a width direction of the folded flat label for sucking a first side of the folded flat label which is supplied; a second suction rod and a fourth suction rod that extend in the direction of the height of folded flat label, are disposed at an interval in the width direction of the folded flat label and are facing the first suction rod and the third suction rod for sucking a second side opposite the first side of the folded flat label which is supplied; and a drive mechanism that causes each of the first suction rod and the second suction rod to move closer to each other, and the third suction rod and the fourth suction rod to move closer to each other, and sandwich the folded flat label and thereafter causes the first suction rod and the second suction rod to move away from each other, and the third suction rod and the fourth suction rod to move away from each other, and open the folded flat label into the opened label, wherein the first suction rod and the third suction rod and the second suction rod and the fourth suction rod each include suction surfaces with suction hole patterns formed by a plurality of suction holes arranged in a line, extending in the direction of the height of folded flat label, for sucking the folded flat label, and arranged such that in a state where the folded flat label is not opened, the suction surfaces of the first suction rod and the second suction rod face each other with the folded flat label being sandwiched between the first suction rod and the second suction rod, and the suction surfaces of the third suction rod and the fourth suction rod face each other with the folded flat label being sandwiched between the third suction rod and the fourth suction rod, and in a state where the folded flat label is opened, the suction surfaces of the first suction rod and the fourth suction rod face each other, and the suction surfaces of the second suction rod and the third suction rod face each other, and the folded flat label is opened into a substantially cylindrical shape by moving the first suction rod and the second suction rod away from each other and moving the third suction rod and the fourth suction rod away from each other.