Abstract: A carding machine for bundled fibers includes a feed roll wound with the bundled fibers; a carding unit to card the bundled fibers drawn out from the feed roll with a fluid that flows in a direction that is orthogonal relative to a moving direction of the bundled fibers; and a rewind roll that rewinds a carded sheet formed by the bundled fibers that are carded in the carding unit, wherein the carding unit includes an internal frame that forms a fluid flow path and a plurality of supporting parts placed along the moving direction of the bundled fibers between a front end and a back end in the moving direction of the bundled fibers within the frame.