Universal warning stripe slitting machine
View Patent ↗A slitting machine includes a stand for supporting a web which is slit into multiple ribbons by a plurality of blades, with the ribbons being wound on corresponding cores supported on an arbor. A common ink roller is mounted across the feedpath of the web and has a printing surface configured to print an end-of-roll warning stripe in a universal pattern bridging adjacent ribbons irrespective of individual width thereof.
1. A slitting machine comprising:
a stand for supporting a web wound in a mill roll;
a plurality of blades spaced laterally apart to slit said web into multiple ribbons; an arbor supporting a plurality of cores for winding thereon respective ones of said ribbons; and
a common ink roller mounted across the feedpath of said web, and having a printing surface configured to print an end of roll warning pattern across the full width of said web bridging all of said ribbons irrespective of the individual width thereof,
wherein said common ink roller is further configured to print said end of roll warning pattern over a short length of all of said ribbons, proximate to a leading edge of each of said ribbons for winding on said plurality of cores, with the remainder of the length of said ribbons being clean without further printing thereon by said common ink roller.
2. A machine according to claim 1 wherein said ink roller corresponds in length to the collective width of said cores on said arbor to bridge the width of said web and print said warning pattern across all of said ribbons.
3. A machine according to claim 2 wherein said printing surface of said ink roller is further configured to print an end of roll warning pattern that repeats from ribbon to ribbon.
4. A machine according to claim 3 wherein said ink roller comprises:
a support shaft; and
a tubular sleeve mounted coaxially on said support shaft and sized in length to bridge said web, and having said printing surface extending around the outer perimeter thereof.
5. A machine according to claim 4 wherein said sleeve comprises rubber.
6. A machine according to claim 4 wherein said sleeve includes a plurality of grooves in said perimeter thereof, with corresponding printing lands disposed therebetween to define said printing surface.
7. A machine according to claim 6 wherein said grooves and lands extends parallel to the longitudinal axis of said sleeve for printing horizontal warning stripes across the width of said ribbons.
8. A machine according to claim 6 wherein said grooves and lands extend obliquely to the longitudinal axis of said sleeve for printing warning stripes obliquely to the width of said ribbons.
9. A machine according to claim 8 wherein said grooves and lands extend diagonally to the longitudinal axis of said sleeve for printing diagonal warning stripes across the width of said ribbons.
10. A machine according to claim 9 wherein said grooves and lands intersect in cross diagonals along said sleeve.
11. A machine according to claim 8 wherein said grooves and lands extend perpendicularly across the longitudinal axis of said sleeve for printing vertical warning stripes along the feedpath of said ribbons.
12. A machine according to claim 6 wherein said grooves define a pattern of discrete lands.
13. A machine according to claim 12 wherein said discrete lands are circular.
14. A machine according to claim 12 wherein said discrete lands are rectangular.
15. A machine according to claim 4 wherein said sleeve includes a smooth outer printing surface for printing a continuous warning stripe across the width of said web.
16. A machine according to claim 4 further comprising means for applying ink to said ink roller.
17. A machine according to claim 4 further comprising a carriage supporting said ink roller adjacent to said web, and configured for selectively engaging said ink roller with said web to intermittently print said warning stripe thereon.
18. A machine according to claim 17 wherein said carriage is positioned before said blades along the feedpath of said web to print said warning stripe prior to slitting said web into said ribbons.
19. A method of using said machine according to claim 4 comprising:
slitting said web into said multiple ribbons;
printing said warning stripe across said multiple ribbons solely at the commencement of winding said cores; and
winding said ribbons on said cores to prepare full rolls thereof.
20. A wound roll made by the method of claim 19 .