Patent ID: 8480550

Claim:
A nonconforming product removing apparatus for a box making machine including a folding unit that folds a sheet material to joint ends and form a box, and a counter ejector that discharges such boxes in a predetermined number, the nonconforming product removing apparatus comprising: an inspection item detecting unit that performs detection depending on an inspection item of the sheet material or the box; a judging unit that judges conformity of the sheet material or the box depending on a detection result obtained by the inspection item detecting unit; and a sort-out unit that is disposed between the folding unit and the counter ejector, conveys a box judged to be a conforming product by the judging unit to the counter ejector, and discharges a box judged to be a nonconforming product by the judging unit, wherein the sort-out unit includes a first supporting member and a second supporting member having a shorter length than the first supporting member in a conveyance direction, the first supporting member and the second supporting member are pivotally mounted on a common roller disposed upstream in the conveyance direction to be individually swingable, and only the second supporting member is returned to a conveyance position from a discharge position when the conforming product has passed over the second supporting member.