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    Apparatus for feeding sheets of corrugated paperboard
    1.
    发明公开
    Apparatus for feeding sheets of corrugated paperboard 失效
    ZuführungvonWellpappebögen。

    公开(公告)号：EP0479417A1

    公开(公告)日：1992-04-08

    申请号：EP91306650.2

    申请日：1991-07-22

    申请人： WARD HOLDING COMPANY, INC.

    发明人： Wells, Robert R. ,  Dent, Boyce C.

    IPC分类号： B65H3/04 ,  B65H3/12 ,  B65H5/22

    CPC分类号： B65H3/042 ,  B65H3/126 ,  B65H11/005 ,  B65H2406/323

    摘要： A lead edge sheet feeder (10,11,12,13), particularly for corrugated paperboard sheets (14), has an endless belt transfer section downstream of a control gate (28). This endless belt (88) is driven at constant speed and at least first (100) and second (102) vacuum boxes are disposed successively along the transfer belt. Both vacuum boxes (100, 102) are continuously connected to a vacuum source. Each vacuum box (100,102) has an open face which has to be completely covered by the sheet (14) being fed before that vacuum box is effective in drawing the sheet (14) against the transfer belt (88). There may be a third vacuum box (104), and vent holes (299) may be provided in a common partition (106) between the third (104) and second (102) vacuum boxes. The feed section, upstream of the control gate (28), may have modes for long and short sheets, in the shorter sheet mode less length of sheet being contacted by a feed conveyor. Another lead edge feeder (13) has pull rolls (330, 332) as the transfer section in conjunction with a control system for maintaining feeding of each sheet (14) by the feed section until a leading crease line in the sheet (14) has passed downstream of the nip of these pull rolls (330-332). Crushing of corrugated sheets (14) is eliminated or reduced by various embodiments.

    摘要翻译： 特别是用于瓦楞纸板（14）的前缘片材进给器（10,11,12,13）在控制门（28）的下游具有环形带传送部分。 该循环带（88）以恒定速度被驱动，并且至少第一（100）和第二（102）个真空箱依次沿着转印带设置。 两个真空箱（100,102）都连续地连接到真空源。 每个真空箱（100,102）具有开口面，该开口面必须在被真空箱有效地将片材（14）拉到转印带（88）之前被供给的纸张（14）完全覆盖。 可以存在第三真空箱（104），并且可以在第三（104）和第二（102）真空箱之间的公共隔板（106）中设置通气孔（299）。 在控制门（28）的上游的进料部分可以具有用于长和短片材的模式，在较短的片材模式中，进料输送机与片材的较短长度接触。 另一个前缘进料器（13）具有作为传送部分的拉辊（330,332），与作为进给部分的每个片材（14）进给的控制系统一起，直到片材（14）中的引导折痕线具有 通过这些拉辊的辊隙下游（330-332）。 波纹片（14）的破碎通过各种实施例消除或减少。