Box moving device

A box moving device for changing the position of a box having four side surfaces that are connected to each other in a loop, the box moving device comprising:

• a conveyor that has at least a holding mode in which it holds at least one of the side surfaces of the box and a non-holding mode in which it does not hold the side surface;
• and
• a movement control unit that drives the conveyor to cause the box to move along a moving direction from a first position to a second position, the movement control unit changes the conveyor from the holding mode to the non-holding mode by moving the conveyor away from the side surfaces,
• wherein the conveyor can alternately switch between a first state, in which it is contracted along the moving direction, and a second state, in which it is extended along the moving direction, and
• the movement control unit causes the box to move from the first position to the second position by driving the conveyor that is in the holding mode and simultaneously switching the conveyor from the first state to the second state.