Apparatus for use in repairing rolls supporting web material
AssigneePhilip Morris Incorporated
InventorRichard C. Donoff
Life of this patent
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Abstract
Apparatus for replacing a damaged core having web material wound thereabout comprises an elongate fixture having longitudinally aligned separably stackable sections, one fixture section having configuration in part facilitating insertion of the fixture within the damaged core and in other part displacing the damaged core outwardly of the wound web material on longitudinal fixture movement and the other fixture section having configuration in part supporting a replacement core thereon and in other part inserting the replacement core within the wound web material.
Claims7
Apparatus for substituting, for a tubular core assembled with web material wound radially thereabout, a replacement core of the same dimensions as said tubular core, said apparatus comprising an elongate fixture having longitudinally aligned mandrel and core carrier elements, said mandrel element having a leading portion freely insertable in such assembled core, a body portion having a cylindrical outer surface of diameter the same or slightly less than the inner diameter of said assembled core and a trailing portion having a cylindrical outer surface of diameter exceeding the inner diameter of said assembled core but less than the inner diameter of said web material wound thereabout, said carrier element being separably stackable on said mandrel element and having a body portion with a cylindrical outer surface of diameter the same or slightly less than the inner diameter of said assembled core and a trailing portion of diameter exceeding the inner diameter of said assembled core whereby said replacement core may be received circumferentially on said carrier element body portion prior to stacking of said carrier element on said mandrel element, said mandrel trailing portion displacing said assembled core from said wound web material and said carrier element trailing portion displacing said replacement core interiorly of said wound web material upon longitudinal translation of said fixture into said wound web material.
Apparatus for removing a damaged tubular core from a roll of web material wound thereon and inserting a replacement core in said roll, said apparatus comprising a mandrel having an elongated body portion having a smoothly rounded part at one end thereof, there being a radially enlarged flange at the other end of said mandrel, the maximum dimension of said mandrel body portion being the same or slightly less than the inner dimension of the damaged core, whereby said mandrel body portion can be inserted into one end of the damaged core, the maximum dimension of said radially enlarged flange exceeding the inner dimension of said damaged core, press means for pressing said mandrel into said damaged core until said radially enlarged flange engages the end face of said one end of said damaged core, a core carrier having an elongated body portion and a radially enlarged cap at one end of said carrier body portion, the maximum dimension of said carrier body portion being less than the inner dimension of a replacement core, and the maximum dimension of said enlarged cap being greater than the inner dimension of said replacement core, said replacement core being carried on the main body portion of said carrier, the end of said carrier opposite said one end thereof being engageably receivable against said other end of said mandrel body portion, there being complementary-shaped interfitting structure at said other end of carrier and said other end of said mandrel for maintaining said carrier and mandrel in longitudinal axial alignment, said pressing means being operable when said carrier is received against said other end of said mandrel for unitarily longitudinally displacing said carrier, the replacement core carried thereon, and said mandrel whereby the damaged core is ejected from and the replacement core inserted into said roll.
Dependencies are inferred from the claim text.