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US 6,051,092 AGranted
Method and apparatus for recycling cores
AssigneeCSI Core Specialties Inc.
InventorsGregg M. Lynch, Stuart Ostroff
Life of this patent
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AssigneeCSI Core Specialties Inc.
InventorsGregg M. Lynch, Stuart Ostroff
Estimating the term…
Winding cores for the paper industry are restored by removing the metal tips from the ends of the core, trimming the core to eliminate the crimped end portions of the core, providing complementary male and female joint ends to the core, grinding the outer surface of the core to a constant outer diameter less than the industry standard outer diameter to accommodate a finishing layer. The cores with the complementary joints are pressed end to end to form a core master prior to its being ground and then picking up the core masters one by one and bringing them into proximity of a web of liner board material having a length which corresponds to the length of the core master and a width which corresponds to the circumference of the core, contacting the glue bearing liner board web with the core and rotating the core to wrap the web of liner board about the core to provide a finished restored core. The core master is then cut into suitable length winding cores.
A method of restoring winding cores comprising the steps of collecting used winding cores, selecting and grouping cores according to grade and length, passing each core from a selected group of cores through a station for trimming the ends of each core, passing each core through a coning station for centering the core in relation to its outer diameter, grinding the outer surface of each core to a constant diameter equivalent to an outer diameter standard less the thickness of a finishing web of fiber material, providing a finishing web of fiber material with a length corresponding to the length of the core being restored and having a width equal to the circumference of the core being restored, and wrapping the finishing web of paper about the core being restored.
A method of restoring a winding core comprising the steps of recuperating used winding cores, selecting the winding cores by grade and length, passing each core of a selected group through a core tip puller station for removing the metal tips from the ends of the cores, trimming the ends of the cores to remove crimping portions thereof, passing each core through a coning station for centering the cores in relation to their outer diameter, forming a female joint socket at one end thereof and a complementary male joint at the other end thereof, joining the cores end to end with adhesive to form an elongated multiple length core master, grinding the outer surface of the core master to a constant diameter equivalent to a predetermined outer diameter standard less the thickness of a finishing web of paper, providing an elongated web equivalent to the length of the multilength core master, wrapping the web about the core with adhesive so as to provide a constant outer diameter equivalent to the predetermined standard, and cutting the core master to desired core lengths.
An apparatus for restoring winding cores comprising a cutting table for trimming the ends of each winding core wherein saw means are provided for cutting off the ends of each core in order to remove any crimping marks, a coning station downstream of said cutting table wherein the coning means are provided for centering the individual cores in relation to their outer diameters, grinding means for grinding the outer surface of the core to a predetermined constant diameter, means for wrapping a finishing web of paper on the ground surface of the core including a table for laying an elongated web of finishing material having a length corresponding to the length of the core and a width corresponding to the circumference of the core, and a device for rotating the winding core in order to wrap the finishing web a paper on the core with adhesive.
An apparatus for restoring winding cores comprising a combination of a cutting table having at least a pair of spaced-apart cutting saws, whereby the distance between the cutting saws can be adjusted to the equivalent of the length of the core being trimmed less the accumulated length of the portions of the ends to be trimmed, a coning station including a pair of spaced-apart coning heads each adapted to engage opposite ends of a trimmed core for the purpose of forming complementary female and male sockets on the opposite ends of the core, means downstream of the coning station for joining the cores end to end to form a core master of predetermined length representing multiple cores, a grinding station arranged downstream thereof and including feeding means for feeding the so-formed core master by a rotating grinding wheel for grinding the core to a predetermined constant outer diameter, means for wrapping a finishing web of fiber material including a skiver for skiving the longitudinal edges of the web to be in contact with the core, the web wrapping station including a table, a web feeder for feeding a predetermined length of web onto the table from a continuous roll, means for picking up and laying the core master on the web, means for wrapping the length of web about the circumference of the core master with the skived edges overlapping, and means for cutting the core master into predetermined core lengths.
Dependencies are inferred from the claim text.