Creasing devices
    2.
    发明授权

    公开(公告)号:US11667100B2

    公开(公告)日:2023-06-06

    申请号:US15465085

    申请日:2017-03-21

    摘要: A creasing device is provided that includes a counter-rotating male drum and female drum. The male drum carries a conventional creasing ring with a central rib flanked by shoulders. The female drum comprises a central channel aligned with the creasing rib on the male drum; and a pair of projecting lateral ribs on each side of the central channel that are aligned with the shoulders on the male drum. The lateral ribs press a sheet of the card or paper stock against the shoulders of the creasing ring to better define the edges of the crease and to reduce the tendency of a printed coating on the stock to crack during subsequent folding. The pair of lateral ribs may be provided by a pair of inserts. Alternatively, both ribs and the central channel may be provided by a single insert.

    Scoring device for gypsum board production device
    10.
    发明授权
    Scoring device for gypsum board production device 有权
    石膏板生产装置评分装置

    公开(公告)号:US09138906B2

    公开(公告)日:2015-09-22

    申请号:US12312038

    申请日:2007-10-25

    申请人: Shoichi Okazaki

    发明人: Shoichi Okazaki

    摘要: The invention provides a whetstone type of scoring device for production of gypsum boards which can accurately and stably form a groove of a constant depth on a sheet of paper for gypsum board liner, and which can prevent wear of a rotary blade and a backing block. The scoring device (11) for a gypsum board production machine (10) has the rotary blade (24) and the backing block (30). The sheet (3) travels under tension over the block (30), which abuts against the lower surface of the sheet. The block has an opening (32) immediately under the blade. The lower surface of the sheet is released downward by the opening. The sheet is ground by a blade edge (24a) while being slightly bent downward within a range of the opening (within an intimate contact area of an angle β).

    摘要翻译: 本发明提供了一种用于生产石膏板的砂轮式刻痕装置,其可以精确且稳定地在用于石膏板衬板的纸张上形成恒定深度的凹槽,并且可以防止旋转刀片和背衬块的磨损。 用于石膏板生产机(10)的刻痕装置(11)具有旋转刀片(24)和背衬块(30)。 片材(3)在张力下在块(30)上行进,该块邻接片材的下表面。 该块具有在叶片正下方的开口(32)。 片材的下表面被开口向下释放。 片材被叶片边缘(24a)磨削,同时在开口的范围内(在角度&bgr的紧密接触区域内)稍微向下弯曲。