Debris screen for a printing press
View Patent ↗A debris screen for a printing press having an ink roller train and a paper pathway includes a source reel, a collecting reel, and at least one transfer roller mounted to a supporting frame, a sheet of flexible material extending along a sheet path from the source reel, over the transfer roller, and to the collecting reel, the transfer roller positioned on the frame such that the sheet path extends between a portion of the ink roller train and the pathway for the paper web.
1. A debris screen for use with a printing press having an ink roller train and defining a pathway for a paper web, the debris screen comprising:
a frame;
a source reel and a collecting reel mounted to the frame;
at least one transfer roller mounted to the frame;
a sheet of flexible material, the sheet extending along a sheet path from the source reel, over the transfer roller, and to the collecting reel; and
the transfer roller positioned on the frame such that at least a portion of the sheet path is disposed between the ink roller train and the pathway for the paper web.
2. The device of claim 1 , wherein the flexible material is a woven fabric.
3. The device of claim 1 , wherein the flexible material is advanceable between the source reel and the collecting reel.
4. The device of claim 3 , wherein at least one of the source reel and the collecting reel includes a brake.
5. The device of claim 3 , including tensioning means for maintaining a desired tension on the flexible material.
6. The device of claim 3 , wherein the source reel includes a friction hub.
7. The device of claim 6 , wherein the collecting reel includes a ratchet mechanism.
8. The device of claim 1 , wherein each of the source reel and the collecting reel is removably mounted to the frame.
9. The device of claim 1 , wherein the transfer roller includes a retractable mounting pin.
10. The device of claim 9 , wherein the transfer roller includes a first end and a second end, the retractable mounting pin mounted to the first end.
11. The device of claim 10 , wherein the transfer roller includes a slot adjacent the first end, the retractable mounting pin including a handle protruding from the slot.
12. The device of claim 1 , including a plurality of transfer rollers, each of the transfer rollers mounted to the frame such that the sheet path encounters a plurality of angular bends between the source reel and the collecting reel.
13. The device of claim 12 , wherein at least one of the transfer rollers is selectively removable, and wherein at least a portion of the flexible material is displaceable away from the sheet path in response to removal of the at least one transfer roller.
14. The device of claim 1 , the printing press including a press frame, and wherein the frame of the debris screen is defined by a portion of the press frame.
15. A printing press having a debris screen and comprising:
an ink roller train;
a pathway for a paper web;
a source reel, a collecting reel, and at least one transfer roller mounted to a supporting frame; and
a sheet of flexible material, the sheet extending along a sheet path from the source reel, over the transfer roller, and to the collecting reel;
the transfer roller positioned on the frame such that the sheet path extends between a portion of the ink roller train and the pathway for the paper web.
16. The device of claim 15 , wherein the flexible material is a woven fabric.
17. The device of claim 15 , wherein the flexible material is shiftable along the sheet path between the source reel and the collecting reel.
18. The device of claim 17 , wherein at least one of the source reel and the collecting reel includes a brake.
19. The device of claim 15 , including tensioning means for maintaining a desired tension on the flexible material.
20. The device of claim 17 , wherein the source reel includes a friction hub.
21. The device of claim 20 , wherein the collecting reel includes a ratchet mechanism.
22. The device of claim 15 , wherein each of the source reel and the collecting reel is removably mounted to the frame.
23. The device of claim 15 , wherein the transfer roller includes a retractable mounting pin.
24. The device of claim 15 , including a plurality of transfer rollers, each of the transfer rollers including a retractable mounting pin.
25. The device of claim 23 , wherein the transfer roller includes a slot adjacent the first end, the retractable mounting pin including a handle protruding from the slot.
26. The device of claim 23 , wherein an end of the transfer roller defines a cavity, and the mounting pin is mounted to a cylinder reciprocally mounted within the cavity.
27. The device of claim 26 , wherein the cylinder is biased toward the end of the transfer roller.
28. The device of claim 15 , including a plurality of transfer rollers, each of the transfer rollers mounted to the frame such that the sheet path encounters a plurality of angular bends between the source reel and the collecting reel.
29. The device of claim 15 , the printing press including a press frame, and wherein the frame of the debris screen is defined by a portion of the press frame.
30. A method of forming an debris barrier on a printing press, the method comprising:
ascertaining the position of the an ink roller train relative to a pathway for a paper web;
mounting a source reel, a collecting reel, and at least one transfer roller to a frame of the printing press; and
routing a sheet of flexible material along a sheet path from the source reel, over the transfer roller, and to the collecting reel; and
positioning the transfer roller on the frame such that the sheet path extends between the position of the ink roller train and the pathway for the paper web.