PURPOSE: To provide an article conveying device capable of easily changing the width size of an input side conveyor and the shape of the start side of the input side conveyor by providing rollers provided at both ends of frame bodies and freely rotatable centering on the width direction axis and endless rotors stretched between the rollers at both ends of the frame bodies.

CONSTITUTION: The number of installed frame bodies 12 is increased or decreased in response to the width of a support frame 7, and an auxiliary conveyor 4 having the width of many kinds is manufactured with frame bodies 12 of one kind, rollers 14, and a belt 15. End sections of an input side conveyor 9, an intermediate section conveyor 10, and a delivery side conveyor 11 can be formed into the optimum shapes when the length of the frame bodies 12 is changed. The center frame body 12 among multiple frame bodies 12 of the input side conveyor 9 is made the longest in particular, the frame bodies on both sides are made shorter in sequence, and the start end section is formed into an angle shape on the plan view. A triangular dead space on the plan view is not formed on a mount base kept in contact with the input side conveyor 9.