Selectively retractable slutter blade mechanism with remote activation/deactivation function
First Claim
1. Slotter wheel apparatus for slotting box blanks at selectively variable locations along the length of the blanks as the blanks are sequentially advanced along a path of travel, said apparatus comprising:
- a rotatable body presenting an axial length and a peripheral margin;
at least one slotter blade having an arcuate elongated cutting edge in which tangents to the edge are oriented substantially perpendicular to said axial length;
means operably coupling said blade with said body for rotation therewith and including structure for selective shifting of said blade during rotation of said body between an extended slotting position wherein the blade cutting edge is oriented for slotting of said blank, and a retracted, blank-clearing position wherein the blade cutting edge will pass said blank without slotting thereof,said blade-shifting structure including a first component rotatable with said blade and a second component adjacent said first component, said first and second components being interengageable for permitting said selective shifting of said blade; and
means for selectively separating said first and second components for allowing rotation of said blade and first component without interengagement between the first and second components, and for alternately causing interengagement between the first and second components in order to permit said selective blade shifting.
1 Assignment
0 Petitions
Accused Products
Abstract
Improved slotter wheel apparatus (20) for use in the formation of box blanks is provided which includes a rotatable wheel (22) supporting a shiftable blade holder (24) and a slotting blade (26), with cooperating cam track (174) and follower (86) structure for selective shifting of blade (26) between an extended slotting position and a retracted blank-clearing position. An activation/deactivation assembly (30) allows the operator to separate cam track (174) from follower (88), thereby permitting use of apparatus (20) as a conventional, high speed, fixed blade slotter. A shock absorbing assembly (27) including a bridge piece (138) operably coupled with blade holder (24) and resilient pads (152, 154) serve to absorb potentially destructive mechanical loads experienced during outward shifting of the blade holder (24) and blade (26).
41 Citations
25 Claims
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1. Slotter wheel apparatus for slotting box blanks at selectively variable locations along the length of the blanks as the blanks are sequentially advanced along a path of travel, said apparatus comprising:
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a rotatable body presenting an axial length and a peripheral margin; at least one slotter blade having an arcuate elongated cutting edge in which tangents to the edge are oriented substantially perpendicular to said axial length; means operably coupling said blade with said body for rotation therewith and including structure for selective shifting of said blade during rotation of said body between an extended slotting position wherein the blade cutting edge is oriented for slotting of said blank, and a retracted, blank-clearing position wherein the blade cutting edge will pass said blank without slotting thereof, said blade-shifting structure including a first component rotatable with said blade and a second component adjacent said first component, said first and second components being interengageable for permitting said selective shifting of said blade; and means for selectively separating said first and second components for allowing rotation of said blade and first component without interengagement between the first and second components, and for alternately causing interengagement between the first and second components in order to permit said selective blade shifting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Slotter wheel apparatus for slotting box blanks at selectively variable locations along the length of the blanks as the blanks are sequentially advanced along a path of travel, said apparatus comprising:
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a rotatable body presenting an axial length and a peripheral margin; at least one elongated slotter blade having spaced end margins and an arcuate elongated cutting edge in which tangents to the edge are oriented substantially perpendicular to said axial length of said body; means operably coupling said blade with said body for rotation therewith and including structure for selective shifting of said blade during rotation of said body between an extended slotting position wherein the blade cutting edge is oriented for slotting of said blank, and a retracted, blank-clearing position wherein the blade cutting edge will pass said blank without slotting thereof, said blade-shifting structure including a shock absorbing assembly for absorbing mechanical shocks incident to shifting of said blade from said retracted position to said extended position, said shock absorbing assembly comprising an operating member shiftable with said blade and resilient bumper structure oriented for engagement with said operating member upon shifting of said blade from said retracted position to said extended position. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification