| 摘要 |
PURPOSE:To automatically discharge large burr on a plastic article which may not be used as polishing material, outside of a machine including a shot blast device suitable for removing burr from plastic articles, by providing such an arrangement that the above-mentioned burr is easily removed from the plastic article. CONSTITUTION:Motors 8, 16 provided with speed change gears are driven for rotating first and second rotary drums 4, 14 in the directions of the arrow, and wind is blown into the first rotary drum 4 by driving a blower 10. Polishing material is sucked up from a storage box 22 through a conduit 21 by driving a centrifugal shooting device 20, and is then shot toward the center lower position of a drum body 18 in the second rotary drum 14. In this condition, large burr which is removed from plastic articles introduced in the first rotary drum 4 through a chute 23, by stirring these articles while they are moved to the right so that they roll and bump together, si blown with the use of wind from the blower 10 so that the burr is discharged into a box through holes in the drum 4. Then, the article discharged from the first drum 4 are introduced into the drum body 18 where small burr is removed from the articles by using the polishing material. The small burr is fallen into the storage box 22 together with the polishing material, and then is used as the polishing material. |
