Patent attributes
feeding mechanism, an expanding mechanism, a folding mechanism for folding front and rear parts of a bottom of a cardboard box, a folding mechanism for folding left and right parts of a bottom of a cardboard box, and a conveying mechanism; the feeding mechanism has a holding space, in which flattened boxes are received; the expanding mechanism includes a horizontally moving member, an expanding arm pivoted to the horizontally moving member, and several suction elements; a cardboard box will be expanded when the horizontally moving member moves with the suction elements applying suction on the box to fix the box thereto, and with the expanding arm pivoting 90 degrees; after a cardboard box has been expanded, the folding mechanisms function one after the other to fold front and rear parts and left and right parts of a bottom of the box.