发明名称 |
Sheet feeder |
摘要 |
A Sheet Feeding System (10) having a reciprocating vacuum shuttle plate (52) includes a knife gate (112) and high-friction rollers 118 and 120 position between the knife gate and an additional conveyor formed by a driven feed roller 94 and an idler feed roller 96. The high-friction rollers form a singulator gap (188) with shoulders 184 of a vacuum-groove (186) on a sheet-engaging surface of the reciprocating shuttle plate. The sheet feeding system includes a transition tray (14) downstream of the additional conveyor for providing a transition to clamps of an endless chain (178). The transition tray comprises an endless conveyor belt (156) with a floating feed roller (160) biased thereagainst. The position of the floating feed roller can be adjusted so as to space it approximately a sheet length from a stationary clamp (176) on the endless chain. The shuttle plate comprises upper panels (76-90), one of which is a vacuum-groove panel (81) which can be interchanged with one another on a shuttle plate frame (74) so that the position of the vacuum-groove panel can be changed. A thumb mechanism 29 provides resistance to falling sheets so that a forward-most sheet (56) has reduced pressure on it.
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申请公布号 |
US5464203(A) |
申请公布日期 |
1995.11.07 |
申请号 |
US19930140960 |
申请日期 |
1993.10.25 |
申请人 |
BELL & HOWELL PHILLIPSBURG COMPANY |
发明人 |
BOWSER, DAVID;WARDEN, GERALD D. |
分类号 |
B65H1/06;B65H3/12;(IPC1-7):B65H5/08 |
主分类号 |
B65H1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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