Separator for stacked corrugated board
First Claim
1. An apparatus for separating and delivering first and second portions of a stack formed of a plurality of layers of die cut corrugated board in which each board in each stacked portion is connected to a respective board in the other stacked portion by a thin paper web forming a part of the liner of the board, while avoiding damaging the respective portions, said apparatus comprising:
- a conveyor comprising a first and second portion;
means for securing a first portion of a connected stack of a plurality of aligned die cut corrugated boards in a stationary position on a first portion of said conveyor;
means for securing a second portion of the connected stack of die cut corrugated boards in a stationary position on a second portion of said conveyor, with the aligned thin paper webs positioned between said first and second conveyor portions; and
means for pivoting the second portion of said conveyor and the secured second stacked portion of the die cut corrugated boards thereon about an axis parallel to the line of the aligned thin paper webs between the first and second portions while the second stacked portion of the die cut corrugated boards remains secured on said second portion of said conveyor to thereby pivotally separate the first and second stacked portions of the die cut corrugated boards from one another by consecutively pivotally separating each board layer along its respective connecting thin paper web.
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Accused Products
Abstract
The invention is a method and apparatus for separating by a pivoting motion a stack formed of a plurality of layers of die cut corrugated board and thereafter delivering separated portions of the stack while minimizing damage to the respective portions. The apparatus comprises a conveyor for delivering stacked portions to be separated, a means for securing portions of the stacked board to portions of the conveyor, and a means for pivoting a portion of the conveyor and a secured stacked portion of the board thereon to thereby pivotally separate the stacked portions from one another along a connecting thin paper web. The method comprises advancing a first and second stacked portion to be separated to a position beneath a securing means, securing the first and second stacked portions by a first and second press device, pivoting the second conveyor portion and secured second stacked portion thereon about an axis parallel to the line of thin paper web connecting the stacked portions, lowering the second conveyor portion and secured second stacked portion, and then delivering a separated stacked portion to a separate roller conveyor. The method for separating requires less force than conventional separators and thereby advantageously reduces damage caused to the top layer of the stacked portions of board.
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Citations
27 Claims
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1. An apparatus for separating and delivering first and second portions of a stack formed of a plurality of layers of die cut corrugated board in which each board in each stacked portion is connected to a respective board in the other stacked portion by a thin paper web forming a part of the liner of the board, while avoiding damaging the respective portions, said apparatus comprising:
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a conveyor comprising a first and second portion; means for securing a first portion of a connected stack of a plurality of aligned die cut corrugated boards in a stationary position on a first portion of said conveyor; means for securing a second portion of the connected stack of die cut corrugated boards in a stationary position on a second portion of said conveyor, with the aligned thin paper webs positioned between said first and second conveyor portions; and means for pivoting the second portion of said conveyor and the secured second stacked portion of the die cut corrugated boards thereon about an axis parallel to the line of the aligned thin paper webs between the first and second portions while the second stacked portion of the die cut corrugated boards remains secured on said second portion of said conveyor to thereby pivotally separate the first and second stacked portions of the die cut corrugated boards from one another by consecutively pivotally separating each board layer along its respective connecting thin paper web. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for separating a single stack into two separate stacks in which the stack to be separated is formed of a plurality of aligned die cut corrugated boards in which each board in each stack is connected to a respective board in the other stack by a thin paper web forming part of the liner of the board corresponding to the die cut, while avoiding damaging the original stack or the resulting stacks, the method comprising:
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securing the stack on two respective conveyor portions with the die cuts in the connected stack aligned between the conveyor portions; and pivoting the conveyor portions with respect to one another along an axis parallel to the die cuts to thereby pivotally separate the connected stack into first and second portions by consecutively separating each board layer along its respective die cut.
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14. A method for separating a stack into two stacks in which the stack to be separated is formed of a plurality of aligned die cut corrugated boards in which each board in each stack is connected to a respective board in the other stack by a thin paper web forming part of the liner of the board corresponding to the die cut, while avoiding damaging the original stack or the resulting stacks, the method comprising:
pivoting two respective conveyor portions, upon which the connected stack of aligned die cut corrugated boards has been secured with the respective die cuts aligned between the conveyor portions, along an axis parallel to the die cuts to thereby pivotally separate the connected stack into first and second portions by consecutively separating each board layer along its respective die cut. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method for consecutively separating first and second portions of a connected stack of a plurality of aligned die cut corrugated boards in which each board in each stacked portion is connected to a respective board in the other stacked portion by a thin paper web forming part of the liner of the board corresponding to the die cuts, while avoiding damaging the respective portions, the method comprising:
pivoting two respective conveyor portions, upon which the connected stack of aligned die cut corrugated boards has been secured with the respective die cuts aligned between the conveyor portions, along an axis parallel to the die cuts to thereby pivotally separate the stack of aligned die cut corrugated boards along its respective die cuts. - View Dependent Claims (22, 23, 24, 25, 26, 27)
Specification