公开(公告)号：US20130168918A1

公开(公告)日：2013-07-04

申请号：US13341673

申请日：2011-12-30

申请人： Anthony E. YAP ,  Thomas M. LYGA ,  Mark MACLEOD

发明人： Anthony E. YAP ,  Thomas M. LYGA ,  Mark MACLEOD

IPC分类号： B65H3/10

CPC分类号： B65H3/10 ,  B65H1/22 ,  B65H3/56 ,  B65H29/145 ,  B65H2301/42322 ,  B65H2406/332 ,  B65H2406/3614 ,  B65H2601/521 ,  B65H2701/1916

摘要： A vacuum roller assembly adapted to singulate a sheet from a stack of sheets. The vacuum roller assembly comprising a stationary inner plenum having a substantially linear plenum slot disposed in fluid communication with the vacuum source and a rotating vacuum roller disposed over the stationary inner plenum and rotating about a rotational axis. The vacuum roller includes a plurality of apertures disposed in fluid communication with the substantially linear plenum slot and about the periphery in at least one region of the roller. Furthermore, each of the apertures is substantially slot-shaped and defines a major axis. The major axis is off-axis with respect to the substantially liner plenum slot of the inner plenum to reduce audible noise levels produced by the rotating vacuum roller as air flows through each rotating aperture into the stationary linear plenum slot.

摘要翻译： 一种真空辊组件，适于从一叠片材中分离片材。 真空辊组件包括固定的内部增压室，其具有设置成与真空源流体连通的基本上线性的气室狭槽和设置在固定内部增压室上并且绕旋转轴线旋转的旋转真空辊。 真空辊包括多个孔，其布置成与所述基本上线性的通风槽流体连通并且围绕所述辊的至少一个区域中的周边流体连通。 此外，每个孔基本上是槽形并且限定长轴。 长轴相对于内部增压室的基本上的衬板增压槽离轴，以降低当空气流过每个旋转孔进入静止的线性增压槽时由旋转的真空辊产生的可听到的噪声水平。