Corrugated paperboard box making machine

A corrugated paperboard box making machine for slotting and punching a corrugated paperboard sheet conveyed along a given conveyance path, comprising:

• a slotter for slotting a corrugated paperboard sheet to form slots, respectively, in downstream and upstream ends of the corrugated paperboard sheet in a conveyance direction;
• a die-cutter disposed downstream of the slotter, the die-cutter including a die cylinder to which a punching die is attached and an anvil cylinder;
• a cutting blade for cutting, in cooperation with the anvil cylinder of the die-cutter, a single piece of the corrugated paperboard sheet slotted by the slotter, into two small-size corrugated paperboard sheets, along a direction perpendicular to the conveyance direction;
• and
• a displacement mechanism for displacing the cutting blade in such a manner as to allow the cutting blade to be selectively set in one of a cutting position where the cutting blade is permitted to cut a corrugated paperboard sheet in the cooperation with the anvil cylinder, and a non-cutting position where the cutting blade is precluded from cutting a corrugated paperboard sheet.