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公开(公告)号:US4384709A
公开(公告)日:1983-05-24
申请号:US277995
申请日:1981-06-26
IPC分类号: B65H39/043 , B42B9/00 , B42C1/12 , B65H5/32 , B65H39/055 , B65H39/02
CPC分类号: B42C1/12 , B65H5/32 , B65H2404/32
摘要: This invention is concerned with the elimination of vibration in signature gathering machine delivery chains. Reciprocal motion in some components of a signature gathering system creates periodic forces which may be at or near the natural frequency of the delivery chain. This causes undesired vibration in the chain. The present invention damps this vibration by continuously constraining the lower run of the chain and by placing a positive drive at the tail end sprocket of the chain to take up some of the slack in the return run. The vibration is also substantially reduced at its source by placing a flywheel on the mainline drive shaft near the point where the reciprocal motion is derived.
摘要翻译: 本发明涉及消除签名收集机输送链中的振动。 在签名收集系统的某些组件中的互动运动产生可能处于或接近递送链的固有频率的周期性力。 这会引起链条中不希望的振动。 本发明通过连续地限制链条的下游并且通过在链条的尾端链轮处放置一个积极的驱动来吸收回流中的一些松弛来减小这种振动。 通过在主导线驱动轴上放置一个飞轮,靠近靠近运动的点,振动也在其源头上大大减少。
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公开(公告)号:US4046366A
公开(公告)日:1977-09-06
申请号:US694221
申请日:1976-06-09
CPC分类号: B42C3/00
摘要: Books are produced by juxtaposing webs of printed material obtained from rolls, cut and then folded twice to afford a lap margin and a juxtaposed fold before delivery to a saddle conveyor; the folded sheets or signatures thus produced are trimmed and one trim is at the aforementioned juxtaposed fold.
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