Apparatus for feeding case blank sheets
AssigneeGeneral Corrugated Machinery Co., Inc.
InventorsLouis R. Baselice, Anthony Freakes, Joseph A. Miller, George A. Ventz
Life of this patent
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Abstract
Apparatus for receiving a stack of case blank sheets from a source of supply and delivering the sheets in shingled arrangement, for further processing, by receiving the stack at a first level, elevating the stack intact vertically to a second level above the first level, where the stack is transferred to a feeder located at the second level for operation in association with a stripper to feed the sheets forward in shingled arrangement from the bottom of the stack, while stabilizing the stack against toppling backward during feeding of the sheets forward from the bottom of the stack.
Claims14
A case blank sheet feeder for receiving a stack of case blank sheets from a source of supply and delivering the sheets in a forward direction from the bottom of the stack in shingled arrangement for further processing, said case blank sheet feeder comprising:
- receiving means located at a first level for receiving the stack of case blank sheets from the source;
- feed means located at a second level above the first level for advancing the sheets in the forward direction from the bottom of each stack to feed the sheets from the sheet feeder:
- elevator means for raising the receiving means from the first level toward the second level, the elevator means including an elevator for moving the receiving means in a vertical direction generally perpendicular to the forward direction, dwell means for stopping the receiving means at a further level intermediate the first level and the second level, and override means for deactivating the dwell means to enable the elevator means to raise the receiving means to the second level;
- stripper means associated with the feed means for controlling the feeding of the sheets from the sheet feeder so as to feed a shingled stream in the forward direction from the bottom of the stack of sheets;
- and
- stabilizing means for precluding toppling of the stack in a backward direction during feeding of the sheets from the bottom of the stack.
A case blank sheet feeder for receiving a stack of case blank sheets from a source of supply and delivering the sheets in a forward direction from the bottom of the stack in shingled arrangement for further processing, said case blank sheet feeder comprising:
- receiving means located at a first level for receiving the stack of case blank sheets from the source;
- feed means located at a second level above the first level for advancing the sheets in the forward direction from the bottom of each stack to feed the sheets from the sheet feeder;
- elevator means for raising the receiving means from the first level toward the second level;
- stripper means associated with the feed means for controlling the feeding of the sheets from the sheet feeder so as to feed a shingled stream in the forward direction from the bottom of the stack of sheets, the stripper means including a gate movable upwardly and downwardly relative to the feed means for regulating the number of sheets able to pass beneath the gate in response to the actuation of the feed means;
- means for moving the gate downward to a first position located toward the feed means such that the gate will be at the first position upon advancing the initial sheet from the bottom of the stack at the feed means, and upward to a second position located above the first position such that the gate will be at the second position during the continued advancement of sheets from that stack;
- and
- stabilizing means for precluding toppling of the stack in a backward direction during feeding of the sheets from the bottom of the stack.
A case blank sheet feeder for receiving a stack of case blank sheets from a source of supply and delivering the sheets in a forward direction from the bottom of the stack in shingled arrangement for further processing, said case blank sheet feeder comprising:
- receiving meeans located at a first level for receiving the stack of case blank sheets from the source;
- feed means located at a second level above the first level for advancing the sheets in the forward direction from the bottom of each stack to feed the sheets from the sheet feeder, the feed means including a feed conveyor having feed conveyor belts for advancing the sheets longitudinally in the forward direction;
- elevator means for raising the receiving means from the first level toward the second level;
- stripper means associated with the feed means for controlling the feeding of the sheets from the sheet feeder so as to feed a shingled stream in the forward direction from the bottom of the stack of sheets;
- stabilizing means for precluding toppling of the stack in a backward direction during feeding of the sheets from the bottom of the stack;
- and
- warp-compensating means for selectively changing the angle between at least a portion of the feed conveyor and the stripper means to shift the location of the leading edge of the lowermost sheet in the stack relative to the stripper means and facilitate advancement of the lowermost sheet through the stripper means.
A case blank sheet feeder for receiving a stack of case blank sheets from a source of supply and delivering the sheets in a forward direction from the bottom of the stack, one sheet at a time in shingled arrangement, for further processing, said case blank sheet feeder comprising:
- receiving means located at a first level for receiving the stack of case blank sheets from the source;
- feed means located at a second level about the first level for delivering the sheets in the forward direction from the bottom of each stack to feed the sheets from the sheet feeder, the feed means including a feed conveyor having a rearward end adjacent the receiving means, a forward end, and feed conveyor belts for advancing the sheets longitudinally toward the forward end;
- elevator means for raising the receiving means from the first level toward the second level;
- and
- stripper means located at the forward end of the feed conveyor for controlling the feeding of the sheets from the sheet feeder so as to feed a shingled stream in the forward direction from the bottom of the stack of sheets;
- the feed conveyor terminating at the stripper means, and the feed means including a delivery conveyor extending in a forward longitudinal direction from the stripper means, the delivery conveyor having delivery conveyor belts mounted for movement laterally to selected lateral locations relative to the feed conveyor belts for selected adjustment to different lateral widths so as to accommodate sheets of different lateral widths while enabling ease of access to the sheets on the delivery conveyor.
A case blank sheet feeder for receiving a stack of case blank sheets from a source of supply and delivering the sheets in a forward direction from the bottom of the stack, one sheet at a time in shingled arrangement, for further processing, said case blank sheet feeder comprising:
- receiving means located at a first level for receiving the stack of case blank sheets from the source;
- feed means located at a second level above the first level for delivering the sheets in the forward direction from the bottom of each stack to feed the sheets from the sheet feeder, the feed means including a feed conveyor having a rearward end adjacent the receiving means, a forward end, and a feed conveyor having feed conveyor belts for advancing the sheets longitudinally toward the forward end;
- elevator means for raising the receiving means from the first level toward the second level;
- stripper means located at the forward end of the feed conveyor for controlling the feeding of the sheets from the sheet feeder so as to feed a shingled stream in the forward direction from the bottom of the stack of sheets;
- and
- warp-compensating means for selectively changing the angle between at least a portion of the feed conveyor and the stripper means to shift the location of the leading edge of the lowermost sheet in the stack relative to the stripper means and facilitate advancement of the lowermost sheet through the stripper means.
A case blank sheet feeder for receiving a stack of case blank sheets from a source of supply and delivering the sheets in a forward direction from the bottom of the stack, one sheet at a time in shingled arrangement, for further processing, said case blank sheet feeder comprising:
- receiving means located at a first level for receiving the stack of case blank sheets from the source;
- feed means located at a second level above the first level for delivering the sheets in the forward direction from the bottom of each stack to feed the sheets from the sheet feeder, the feed means including a feed conveyor having a rearward end adjacent the receiving means, and a forward end;
- elevator means for raising the receiving means from the first level toward the second level, the elevator means including an elevator for moving the receiving means in a vertical direction generally perpendicular to the forward direction, dwell means for stopping the receiving means at a further level intermediate the first level and the second level, and override means for deactivating the dwell means to enable the elevator means to raise the receiving means to the second level;
- and
- stripper means located at the forward end of the feed conveyor for controlling the feeding of the sheets from the sheet feeder so as to feed a shingled stream in the forward direction from the bottom of the stack of sheets.
A case blank sheet feeder for receiving a stack of case blank sheets from a source of supply and delivering the sheets in a forward direction from the bottom of the stack, one sheet at a time in shingled arrangement, for further processing, said case blank sheet feeder comprising:
- receiving means located at a first level for receiving the stack of case blank sheets from the source;
- feed means located at a second level above the first level for delivering the sheets in the forward direction from the bottom of each stack to feed the sheets from the sheet feeder, the feed means including a feed conveyor having a rearward end adjacent the receiving means, and a forward end;
- elevator means for raising the receiving means from the first level toward the second level;
- and
- stripper means located at the forward end of the feed conveyor for controlling the feeding of the sheets from the sheet feeder so as to feed a shingled stream in the forward direction from the bottom of the stack of sheets, the stripper means including a gate movable upwardly and downwardly relative to the feed means for regulating the number of sheets able to pass beneath the gate in response to the actuation of the feed means;
- and
- means for moving the gate downward to a first position located toward the feed means such that the gate will be at the first position upon advancing the initial sheet from the bottom of the stack at the feed means, and upward to a second position located above the first position such that the gate will be at the second position during the continued advancement of sheets from that stack.
Dependencies are inferred from the claim text.