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US 6,026,727 AGranted
Rotary scoring apparatus having retractable scoring blade
AssigneeLawrence Paper Company
InventorWilliam R. Meeks
Life of this patent
Estimating the term…
Abstract
An improved scoring apparatus of the type used in box making operations for the purpose of creating strategically located scores and cuts in box blanks that define the folding lines and tabs of the finished boxes. The scoring apparatus includes a selectively retractable scoring blade that can be pivoted between an extended position and a retracted position during operation of the scoring apparatus for permitting scoring and cutting along any position of the box blanks.
Claims31
A rotary scoring apparatus for scoring box blanks at spaced locations on the box blanks as the box blanks are sequentially advanced along a path of travel, said scoring apparatus comprising:
- an elongated rotatable cylinder having a center and presenting an axial length and a peripheral margin;
- drive means for rotating said cylinder;
- a scoring blade presenting an elongated scoring edge;
- blade mounting structure mounting the scoring blade on the cylinder;
- scoring blade shifting structure operably coupled with said mounting structure selectively pivoting said scoring blade in and out of an extending scoring position during rotation of said cylinder between an extended scoring position wherein said scoring edge is pivoted away from said center of said cylinder for scoring the box blanks, and a retracted, blank-clearing position wherein said scoring edge is pivoted toward said center of said cylinder for passing the box blanks without scoring the box blanks, said blade shifting structure including an intermittent actuating assembly shifting said scoring blade in and out of the scoring position during rotation of the cylinder relative to the actuating assembly.
2 more elements
A rotary scoring apparatus for scoring box blanks at spaced locations on the box blanks as the box blanks are sequentially advanced along a path of travel, said scoring apparatus comprising:
- an elongated rotatable cylinder presenting a pair of opposed end surfaces, an axially peripheral surface which is circular in cross-section and extends between said end surfaces, and an elongated, axially extending slot formed in said cylinder and intersecting said peripheral surface;
- a scoring blade presenting an elongated scoring edge located within and extending along the length of said slot;
- and
- scoring blade shifting mechanism operably coupled with said blade to selectively shift the scoring blade relative to said cylinder and said peripheral surface during rotation of said cylinder, said blade shifting mechanism including an elongated, pivotal blade shaft located within said slot and supporting said blade, said blade being selectively pivotal between an extended scoring position wherein said scoring edge is shifted outboard of said cylinder peripheral surface for scoring the box blanks, and a retracted, blank-clearing position wherein said scoring edge is shifted inboard of said cylinder peripheral surface for passing the box blanks without scoring the box blanks,
- said mechanism operable to shift said blade between said positions during rotation of said cylinder and without stopping the rotation of the cylinder,
- said mechanism operable to retain said blade in said retracted position throughout a complete revolution of said cylinder.
3 more elements
A rotary scoring apparatus for scoring box blanks at spaced locations on the box blanks as the box blanks are sequentially advanced along a path of travel, said scoring apparatus comprising:
- an elongated rotatable cylinder presenting an axial length and a peripheral margin, said cylinder including an elongated slot formed in said peripheral margin;
- a drive operable to rotate said cylinder;
- a scoring blade presenting an elongated scoring edge;
- coupling means for operably coupling said scoring blade in said elongated slot, said coupling means including an elongated cylindrical blade shaft pivotally mounted within said slot, said scoring blade attached to said shaft so that said scoring edge extends radially outwardly from said blade shaft;
- scoring blade shifting structure operably coupled with said coupling means for selectively pivoting said scoring blade toward and away from said cylinder during rotation of said cylinder between an extended scoring position wherein said scoring edge is pivoted outboard of said cylinder peripheral margin for scoring the box blanks, and a retracted, blank-clearing position wherein said scoring edge is located closer to said cylinder for passing the box blanks without scoring the box blanks, said scoring blade shifting structure including a toggle arm operably coupled with one end of said blade shaft for pivoting said blade shaft during rotation of said cylinder for pivoting said scoring blade between said extended and retracted positions.
2 more elements
A rotary scoring apparatus for scoring box blanks at spaced locations on the box blanks as the box blanks are sequentially advanced along a path of travel, said scoring apparatus comprising:
- an elongated rotatable cylinder presenting an axial length and a peripheral margin, said cylinder including an elongated slot formed in said peripheral margin and extending across said axial length;
- drive means for rotating said cylinder;
- a scoring blade presenting an elongated scoring edge;
- coupling means for operably coupling said scoring blade in said elongated slot;
- and
- scoring blade shifting structure for selectively pivoting said scoring blade in and out of said elongated slot during rotation of said cylinder between an extended scoring position wherein said scoring edge is pivoted outboard of said cylinder peripheral margin for scoring the box blanks, and a retracted, blank-clearing position wherein said scoring edge is located inboard of said cylinder peripheral margin for passing the box blanks without scoring the box blanks,
- said coupling means including an elongated cylindrical blade shaft pivotally mounted within said slot, said scoring blade being fixedly coupled with said blade shaft so that said scoring edge extends radially outwardly from said shaft,
- said scoring blade shifting structure including a toggle arm operably coupled with one end of said blade shaft for pivoting said blade shaft during rotation of said cylinder for pivoting said scoring blade between said extended and retracted positions;
- and
- said scoring blade shifting structure further including an intermittent actuating assembly for shifting said toggle arm during rotation of said cylinder between a toggled position wherein said toggle arm pivots said blade shaft and said blade to said extended position and an un-toggled position wherein said toggle arm pivots said blade shaft and said blade to said retracted position.
7 more elements
Dependencies are inferred from the claim text.