| 摘要 |
PURPOSE:To provide a remarkably superior grinding effect on a pinball, to eliminate the cleaning of a carrier belt, to remarkably reduce the frequency of cleaning and to perform a continuous operation essentially. CONSTITUTION:Plural guide parts 2 for carrying are provided in the moving direction of the pinball BO, and also, a guide path is constituted by providing a gap for grinding on at least the whole effective moving part of the pinball BO among the guide parts 2. The carrier belt is provided on the guide path confronting by keeping a gap in which the pinball BO is interposed, and the pinball BO can be carried while rolling by the movement of the carrier belt while holding the pinball BO there between the guide path and the carrier belt. A moving direction edge 21A on the rolling plane of the pinball BO in the guide part 2 which forms the gap for grinding is formed in square shape. |
