B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
270/143
B65H 5/10 (2006.01) B65H 3/08 (2006.01) B65H 3/12 (2006.01)
Patent
CA 1037507
SHEET FEEDING MECHANISM ABSTRACT OF THE DISCLOSURE A mechanism for feeding blanks of corrugated cardboard and the like into a printing and container forming machine. The feeding mechanism includes a perforated suction head for moving individual sheets from a stack of sheets into the machine. The suction head includes a perforated plate and plenum chamber mounted on a tubular member which is telescopingly received over an open ended tubular support member, mounted on a hollow reci- procating shuttle. A valve is disposed at the shuttle end of the tubular support for connecting the shuttle to an evacuator and is actuable by a cam contoured such that the valve is actuated each time the suction head cycles. The blanks are supported with their forward ends at the shuttle and at their opposite ends by a universally adjustable support which compen- sates for warped blanks. A dump valve for venting the shuttle to atmosphere is operable in timed relation to the vacuum valve by means of a linear cam located adjacent the shuttle.
246482
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