Roll sorter device and sorting method for sorting preforms and transport device with such a roll sorter device

A sorting method for sorting preforms, the method comprising:

• rotatably driving a first roll of a roll sorter device about a roll axis of the first roll;
• rotatably driving a second roll of a roll sorter device about a roll axis of the second roll, the rotation of the second roll being opposite the rotation of the first roll, the second roll being spaced from the first roll such that the roll axes are arranged substantially parallel to each other;
• and
• upon detection of at least one of a seized preform and a faulty preform on the first and second rolls, modifying an arrangement of the first or second rolls relative to each other.

A roll sorter device for sorting preforms, comprising

• a first roll rotatable about a first roll axis;
• a second roll rotatable about a second roll axis, the second roll being rotatable in a direction opposite to the rotation of the first roll, the second roll being spaced from the first roll such that the first and second roll axes are arranged substantially parallel to one other;
• a detection device configured to detect at least one of a seized preform and a faulty preform on the first and second rolls;
• and
• a roll arrangement modification element configured to modify an arrangement of the first and second rolls relative to one another when the detection device detects a seized preform.