Cardboard box dividing device and cardboard box production device

A cardboard box dividing device for cutting and dividing, along a width direction intersecting with a transport direction, a connected cardboard box laminate in which a plurality of connected cardboard box bodies continuous along the transport direction are stacked in a thickness direction, the cardboard box dividing device comprising:

• a lower conveyor on which the plurality of connected cardboard box bodies are stacked and transported;
• an upstream side positioning member movable along the transport direction and the thickness direction of the connected cardboard box body in an upstream portion of the lower conveyor;
• a downstream side positioning member movable along the transport direction and the thickness direction of the connected cardboard box body in a downstream portion of the lower conveyor;
• a positioning drive device capable of independently moving the upstream side positioning member and the downstream side positioning member;
• a pressing device pressing, from above, the plurality of connected cardboard box bodies stacked on the lower conveyor;
• a cutting knife disposed along a width direction of the connected cardboard box body and dividing the plurality of connected cardboard box bodies stacked on the lower conveyor into a front part and a rear part;
• and
• a lifting/lowering device moving the plurality of connected cardboard box bodies on the lower conveyor relative to the cutting knife along an up-down direction,
• wherein the lifting/lowering device has a lifting/lowering base supporting the lower conveyor and the pressing device and a lifting/lowering drive device lifting and lowering the lifting/lowering base, and the positioning drive device operates the upstream side positioning member and the downstream side positioning member along the thickness direction of the connected cardboard box body as the lifting/lowering base ascends and descends.