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US 4,727,784 AGranted
Web cut blank piling method and apparatus
AssigneeBernal Rotary Systems, Inc.
InventorsAlbert J. Sarka, Jerry L. Bell
Life of this patent
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AssigneeBernal Rotary Systems, Inc.
InventorsAlbert J. Sarka, Jerry L. Bell
Estimating the term…
A method and apparatus for piling a plurality of cut blanks of a flexible material in overlapped and shingled or stacked relationship. After being cut each blank is accelerated to increase its lineal speed to thereby produce a gap between the blank and an immediately succeeding blank. After acceleration, each blank is deflected, preferably by a plate, away from and out of its accelerated path of travel toward an underlying receiving surface such as a conveyor or platform. After being deflected, the trailing portion of each blank is displaced preferably by rotating cams so that when rapidly decelerated, an immediately succeeding blank passes into and is deposited in overlapping relationship with such blank. To deposit the blanks is stacked relationship with their leading edges substantially aligned, they are decelerated from their forward travel to a complete stop preferably by striking a positive stop. To deposit the blanks in shingled relationship with their leading edges spaced apart, they are rapidly decelerated to a relatively slow speed at which they continue to be advanced in their path of travel, preferably by a conveyor on which they are received.
A method of piling a plurality of blanks of a flexible material comprising, completely severing a plurality of flexible blanks from a continuous web of a flexible material so that the cut blanks move substantially consecutively at a first speed of at least 300 lineal feet per minute, accelerating each cut blank along a first path of travel to a second speed at least 1.5 times said first speed to provide a gap between its trailing edge and the leading edge of an immediately succeeding cut blank, after acceleration of each blank positively deflecting each blank out of the first path of travel of such blank and onto a second path of travel inclined downwardly and at an acute included angle relative to said first path of travel, independently of said deflecting rapidly positively displacing the trailing edge of each blank from the second path of travel, and after deflection onto the second path of travel and out of the first path of travel rapidly decelerating each blank to a third speed of less than about 1/5 of the second speed of such blank and into a third position inclined at an acute included angle to said second path so that an immediately succeeding blank will overlap and at least in part be deposited upon such blank without sliding engagement therewith over a substantial length thereof to provide a pile of a plurality of overlapped cut blanks.
An apparatus for piling a plurality of blanks of a flexible material comprising, a rotary cutting die completely severing a plurality of flexible blanks from a continuous web of a flexible material so that the cut blanks move substantially consecutively at a first speed of at least 300 lineal feet per minute, an accelerating mechanism increasing the speed of each cut blank along a first predetermined path of travel to a second speed at least 1.5 times said first speed to produce a gap between its trailing edge and the leading edge of an immediately succeeding cut blank, a deflector constructed and arranged to positively deflect each blank, after it has been accelerated, out of the first path of travel of such blank and into a second path of travel inclined downwardly and at an acute included angle relative to said first path of travel, displacement means independent of said deflector and radpidly positively displacing the trailing portion of each blank from the second path of travel, and a retarder constructed and arranged to rapidly decelerate each blank to a third speed less than about 1/5 of said second path of travel and out of such first path of travel so that an immediately succeeding blank will overlap and at least in part be deposited upon such blank without sliding engagment therewith over a substantial length thereof and in a third position inclined at an acute included angle to said second path to provide pile of a plurality of overlapped and cut blanks. be deposited upon such blank to provide pile of a plurality of overlapped and cut blanks.
Dependencies are inferred from the claim text.