Suction head on sheet feeders for sheet-processing machines

摘要

1288692 Feeding sheets HEIDELBERGER DRUCKMASCHINEN AG 8 June 1970 [11 June 1969] 27611/70 Heading B8R Separating suckers 36, Figs. 1 and 2, to engage the rear edge of the top sheet of a pile 38 are reciprocated vertically by means of rollers 37 sliding in a guide 39, being actuated by a cam disc 30 on a drive shaft 8, while an eccentric 10 on the shaft acts through a rock shaft 16 and levers 19 to reciprocate horizontally further suckers 23 mounted rotatably by means of a support 22 on the levers, the support carrying arms 24 having rollers 25 running in guides 26 to keep the suckers 28 horizontal. Suction is applied to the suckers through a rotary valve 46 mounted on the shaft 8 in a housing 48 detachably secured by a catch 50 on the sucker housing 1 so as to be removable for cleaning the valve. A pipe 40 carries stack stops 42, blowers 41 for the rear edge of the pile, and wiper brushes for the pile. The pile height is adjustable in response to a feeler 45.