To obtain a vacuum cleaner the detergency of which is improved.

A workpiece 28 is conveyed while being held between an upper conveying roll 24a, 24b, 24c, 24d and a lower conveying roll 26a, 26b, 26c, 26d. Supporting parts 16a, 16b supports the upper rolls 24a, 24b, 24c, 24d and the lower rolls 26a, 26b, 26c, 26d. The supporting part 16a, 16b are vibrated by vibrators 34a, 34b, respectively. Dust stuck to the work 28 is sucked/removed by vacuum blocks 20a, 20b. 20c in a state where the workpiece 28 is held between the upper conveying roll 24a, 24b, 24c, 24d and the lower conveying roll 26a, 26b, 26c, 26d and the supporting parts 16a, 16b are vibrated by the vibrators 34a, 34b.