Counter ejector and box former

A counter ejector disposed at a downstream part of a box former, the counter ejector comprising:

• a hopper that receives a sheet-shaped corrugated board box being transferred and forwarded from an upstream side from underneath;
• and
• a blower that downwardly blows air to the hopper from above the corrugated board box, wherein the blower is changing a blowing area to be blown along a transfer direction of the corrugated board box, and blows air to the blowing area corresponding to at least a front-end portion and a rear-end portion of the hopper in the transfer direction if the corrugated board box has a possible maximum size in the transfer direction,
• wherein the blower comprises a fixed blower fixed to a position corresponding to the rear-end portion of the hopper in the transfer direction and a movable blower being movable at the front-end portion of the hopper in the transfer direction in accordance with a size of the corrugated board box, and
• the movable blower is fixed to a front stop which is supported to be movable in forward and backward directions and stops the corrugated board box, and the movable blower moves in the forward and backward directions along with the front stop.