Corrugated paperboard box making machine

A corrugated paperboard box making machine comprising:

• a slotter device comprising a rotatable cylinder, and a blade attached to an outer periphery of the cylinder, the slotter device being configured to perform a slotting operation for forming slots in a corrugated paperboard sheet of a various configuration by the blade cutting the corrugated paperboard sheet;
• and
• a control device configured to control the slotting operation of the slotter device, wherein the control device is configured to:
• calculate a limit value of a length (S) of the blade from parameters including a circumferential length (N) of the cylinder, and dimensions (E, F, G) of the corrugated paperboard sheet, wherein the limit value is calculated based on a selected one of production modes for making the corrugated paperboard box that include a first production mode (normal production in double slotter mode), a second production mode (skip-feed production in the double slotter mode), a third production mode (two-up production in single slotter mode) and a fourth production mode (a variation of the third production mode in which adjacent two corrugated paperboard sheets are connected);
• and
• determine whether or not the length of the blade exceeds the limit value.