| 摘要 |
<p>A grind stone-type scoring device for a gypsum board production device, capable of accurately and stably forming a groove with a constant depth in a gypsum board liner paper and in which wear of a rotating blade and receiving base is prevented. The scoring device (11) for the gypsum board production device (10) has the rotating blade (24) and the receiving base (30). The gypsum board liner paper (3) travels under tension on the receiving base (30), and the receiving base is in contact with the lower side of the gypsum board liner paper. The receiving base has an opening (32) directly under the rotating blade. The lower side of the gypsum board liner paper is released downward at the opening. The gypsum board liner paper is ground by an edge (24a) while being slightly bent downward within the range of the opening (in the region of angle ß).</p> |
