| 摘要 |
1,218,899. Delivery (sheets; endless conveyers. J. E. FOSTER, Jr. 16 May, 1969 [17 May, 1968], No. 25209/69. Headings B8A and B8R. Sheets delivered from a die-cutting machine are passed over a finger section 22 through which projects a rapidly rotating rectangular impactor 12 which frees the waste portions of the sheet, assisted by a blower 28 and suction device 34. The sheets are then forwarded by rollers to the underside of a conveyer chain 50 carrying a plurality of perforated channel members 72, through the holes in which air is drawn by fans 96. When the leading edge of a sheet is above the left-hand end of a stack table 138, it is sensed by an electric eye 122 or a micro limit switch, which activates an air cylinder to lower a grid mechanism comprising a plurality of wires 104 so as to strip the sheet from the chain and deposit it on a stack 182. The wires 204 in their upper position are received in grooves in the undersides of the members 72. A table-raising mechanism acting through chains 146, 150 is operated in response to the sensing of the height of the stack by an electric eye 180 to keep the level of the top of the stack constant. |
