Claims
- 1. An oscillating roller for one of the ink and dampening fluid systems of a printing press, comprising an elongated axially extending roller shaft having two opposed outer ends, means on said outer ends of said roller shaft for mounting said roller shaft to a printing press, a plurality of annular cylinder heads located on and concentric with said roller shaft, said annular cylinder heads being axially spaced apart along said roller shaft, at least one of said annular cylinder heads being located adjacent each of said outer ends of said roller shaft, a plurality of separate annular pistons relatively non-rotatably mounted and relatively slidable on and concentric with said roller shaft, said plurality of separate annular pistons being axially spaced apart along said roller shaft, at least one of said separate annular pistons being located adjacent each of said outer ends of said roller shaft, a plurality of annular cylinder walls axially spaced apart along said roller shaft between said annular cylinder heads and said separate annular pistons, each of said separate annular pistons sliding in the adjacent said annular cylinder wall, said roller shaft extending through each of said pluralities of annular cylinder heads, separate annular pistons and annular cylinder walls, said pluralities of annular cylinder heads, separate annular pistons and annular cylinder walls cooperating to form a plurality of annular axially variable volumes about said roller shaft, at least one of said annular axially variable volumes being located adjacent each of said outer ends of said roller shaft, control means for admitting and exiting pressurized fluid from said plurality of annular axially variable volumes for causing axial oscillating motion of said plurality of separate annular pistons relative to said plurality of annular cylinder heads, a hollow roller core, said outer ends of said roller shaft extending beyond said hollow roller core, said pluralities of separate annular pistons, annular cylinder heads and annular cylinder walls being contained beneath said hollow roller core, said hollow roller core being spaced radially outwardly apart from each of said plurality of annular cylinder walls, and means for axially moving said hollow roller core with one of said plurality of annular cylinder walls and plurality of separate annular pistons, whereby operating said control means to admit and exit pressurized fluid from said plurality of annular axial variable volumes causes axial oscillating motion of said hollow roller core relative to said roller shaft.
- 2. An oscillating roller as in claim 1, wherein said roller shaft is a dead shaft, and said means on said outer ends of said roller shaft for mounting said roller shaft includes means for non-rotatably securing said roller shaft to the printing press, and said means for axially moving said hollow roller core rotatably and slidably mounts said hollow roller core to said roller shaft.
- 3. An oscillating roller as in claim 2, wherein said oscillating roller has at least four of said separate annular pistons, at least four of said annular cylinder walls and at least four of said annular cylinder heads forming at least four of said annular axially variable volumes, two of said annular axial variable volumes being located adjacent each of said outer ends of said roller shaft.
- 4. An oscillating roller as in claim 1, wherein said oscillating roller has two of said separate annular pistons, two of said annular cylinder walls and two of said annular cylinder heads forming two of said annular axially variable volumes, one of said annular axially variable volumes being adjacent each of said outer ends of said roller shaft.
- 5. An oscillating roller as in claim 1, wherein said oscillating roller has a plurality of said separate annular pistons, a plurality of said annular cylinder heads and a plurality of annular cylinder walls adjacent each of said outer ends of said oscillating roller to provide a plurality of annular axial variable volumes adjacent each of the ends of said oscillating roller, and said control means comprises means for alternately pressurizing and venting said plurality of annular axially variable volumes adjacent each of said ends of said oscillating roller to oscillate said oscillating roller.
- 6. An oscillating roller as in claim 1, wherein said means for axially moving said hollow roller core further comprises bearing means to rotatable mount said hollow roller core, said bearing means having an inner portion slidable on said roller shaft and axially movable by said annular axially variable volumes.
- 7. An oscillating roller as in claim 6, wherein said bearing means comprises bearings capable of taking radial and axial loads on said hollow roller core.
- 8. An oscillating roller as in claim 6, wherein said bearings means are roller bearings.
- 9. An oscillating roller as in claim 6, wherein said bearing means are ball bearings.
- 10. An oscillating roller as in claim 1, wherein said plurality of separate annular pistons, said plurality of annular cylinder heads, said plurality of annular cylinder walls, and said plurality of annular axially variable volumes are each even in number.
- 11. An oscillating roller as in claim 1, wherein said oscillating roller has a plurality of said separate annular pistons, a plurality of said annular cylinder heads and a plurality of annular cylinder walls adjacent each of said outer ends of said oscillating roller to provide a plurality of annular axial variable volumes adjacent each of said outer ends of said oscillating roller, said control means comprises means for alternately pressurizing and venting said plurality of annular axially variable volumes adjacent each of said outer ends of said roller shaft to oscillate said oscillating roller, said means for axially moving said hollow roller core further comprising bearing means to rotatable mount said hollow roller core, said bearing means having an inner portion slidable on said roller shaft and axially movable by said annular axially variable volumes, said bearing means being capable of taking radial and axial loads on said hollow roller core and being one of roller and ball bearings.
- 12. An oscillating roller as in claim 1, wherein said plurality of annular cylinder heads, said plurality of separate annular pistons and said plurality of annular cylinder walls are stackable on said roller shaft to form said plurality of annular axially variable volumes, whereby the force required to oscillate the oscillating roller may be increased by stacking said annular axially variable volumes on said roller shaft.
- 13. An oscillating roller as in claim 1, wherein each of said annular cylinder heads is integrally formed with its cooperating adjacent said annular cylinder wall, each of said separate annular pistons being slidable in its cooperating adjacent said annular cylinder walls, said annular cylinder heads, said annular cylinder walls and said separate annular pistons being stackable on said roller shaft.
- 14. An oscillating roller for one of the ink and dampening fluid systems of a printing press, comprising an elongated axially extending roller shaft having two opposed outer ends, means on said outer ends of said roller shaft for rotatably mounting said roller shaft to a printing press, a plurality of annular cylinder heads located on and concentric with said roller shaft, said annular cylinder heads being axially spaced apart along said roller shaft, at least one of said annular cylinder heads being located adjacent each of said outer ends of said roller shaft, a plurality of separate annular pistons relatively non-rotatably mounted and relatively slidable on and concentric with said roller shaft, said plurality of separate annular pistons being axially spaced apart along said roller shaft, at least one of said separate annular pistons being located adjacent each of said outer ends of said roller shaft, a plurality of cylinder walls axially spaced apart along said roller shaft between said annular cylinder heads and said separate annular pistons, each of said separate annular pistons sliding in the adjacent said cylinder wall, said roller shaft extending through each of said pluralities of annular cylinder heads, separate annular pistons and cylinder walls, said pluralities of annular cylinder heads, separate annular pistons and cylinder walls cooperating to form a plurality of annular axially variable volumes about said roller shaft, at least one of said annular axially variable volumes being located adjacent each of said outer ends of said roller shaft, control means for admitting and exiting pressurized fluid from said plurality of annular axially variable volumes for causing axial oscillating motion of said plurality of separate annular pistons relative to said plurality of annular cylinder heads, and a hollow roller core, said outer ends of said roller shaft extending beyond said hollow roller core, said pluralities of separate annular pistons, annular cylinder heads and cylinder walls being contained beneath said hollow roller core, said hollow roller core on its interior forming each of said plurality of cylinder walls, whereby operating said control means to admit and exit pressurized fluid from said plurality of annular axial variable volumes causes axial oscillating motion of said hollow roller core relative to said roller shaft.
- 15. An oscillating roller as in claim 14, wherein said roller shaft is a live shaft, and said means on said outer ends of said roller shaft for rotatably mounting said roller shaft includes bearing means for rotatably securing said roller shaft to the printing press.
- 16. An oscillating roller as in claim 15, wherein said oscillating roller has at least four of said separate annular pistons, at least four of said cylinder walls and at least four of said annular cylinder heads forming at least four of said annular axially variable volumes, two of said annular axial variable volumes being located adjacent each of said outer ends of said roller shaft.
- 17. An oscillating roller as in claim 14, wherein said oscillating roller has two of said separate annular pistons, two of said cylinder walls and two of said annular cylinder heads forming two of said annular axially variable volumes, one of said annular axially variable volumes being adjacent each of said outer ends of said roller shaft.
- 18. An oscillating roller as in claim 14, wherein said oscillating roller has a plurality of said separate annular pistons, a plurality of said annular cylinder heads and a plurality of cylinder walls adjacent each of said outer ends of said oscillating roller to provide a plurality of annular axial variable volumes adjacent each of the ends of said oscillating roller, and said control means comprises means for alternately pressurizing and venting said plurality of annular axially variable volumes adjacent each of said ends of said oscillating roller to oscillate said oscillating roller.
- 19. An oscillating roller as in claim 15, wherein said bearing means comprises bearings capable of taking radial and axial loads.
- 20. An oscillating roller as in claim 15, wherein said bearings means are roller bearings.
- 21. An oscillating roller as in claim 15, wherein said bearing means are ball bearings.
- 22. An oscillating roller as in claim 14, wherein said plurality of separate annular pistons, said plurality of annular cylinder heads, said plurality of cylinder walls, and said plurality of annular axially variable volumes are each even in number.
- 23. An oscillating roller as in claim 14, wherein said oscillating roller has a plurality of said separate annular pistons, a plurality of said annular cylinder heads and a plurality of cylinder walls adjacent each of said outer ends of said oscillating roller to provide a plurality of annular axial variable volumes adjacent each of said outer ends of said oscillating roller, said control means comprises means for alternately pressurizing and venting said plurality of annular axially variable volumes adjacent each of said outer ends of said roller shaft to oscillate said oscillating roller, said means on said outer ends comprising bearing means to rotatable mount said roller shaft, said bearing means being capable of taking radial loads on said roller shaft and being one of roller and ball bearings.
- 24. An oscillating roller as in claim 14, wherein said plurality of annular cylinder heads, said plurality of separate annular pistons and said plurality of cylinder walls are stackable on said roller shaft to form said plurality of annular axially variable volumes, whereby the force required to oscillate the oscillating roller may be increased by stacking additional said annular axially variable volumes on said roller shaft.
- 25. An oscillating roller for one of the ink and dampening fluid systems of a printing press, comprising an elongated axially extending roller shaft having two opposed outer ends, means on said outer ends of said roller shaft for mounting said roller shaft to a printing press, a plurality of annular cylinder heads located on and concentric with said roller shaft, said annular cylinder heads being axially spaced apart along said roller shaft, at least one of said annular cylinder heads being located adjacent each of said outer ends of said roller shaft, a plurality of separate annular pistons relatively non-rotatably mounted and relatively slidable on and concentric with said roller shaft, said plurality of separate annular pistons being axially spaced apart along said roller shaft, at least one of said separate annular pistons being located adjacent each of said outer ends of said roller shaft, a plurality of cylinder walls axially spaced apart along said roller shaft between said annular cylinder heads and said separate annular pistons, each of said separate annular pistons sliding in the adjacent said cylinder wall, said roller shaft extending through each of said pluralities of annular cylinder heads, separate annular pistons and cylinder walls, said pluralities of annular cylinder heads, separate annular pistons and cylinder walls cooperating to form a plurality of annular axially variable volumes about said roller shaft, at least one of said annular axially variable volumes being located adjacent each of said outer ends of said roller shaft, said plurality of annular cylinder heads, said plurality of separate annular pistons and said plurality of annular cylinder walls being stackable on said roller shaft to form said plurality of annular axially variable volumes, control means for admitting and exiting pressurized fluid from said plurality of annular axially variable volumes for causing axial oscillating motion of said plurality of separate annular pistons relative to said plurality of annular cylinder heads, and a hollow roller core, said outer ends of said roller shaft extending outwardly beyond said hollow roller core, said pluralities of separate annular pistons, annular cylinder heads and cylinder walls being contained beneath said hollow roller core, whereby the force required to oscillate the oscillating roller may be increased by stacking said annular axially variable volumes on said roller shaft, and operating said control means to admit and exit pressurized fluid from said plurality of annular axial variable volumes causes axial oscillating motion of said hollow roller core relative to said roller shaft.
Parent Case Info
This is a continuation of copending applications Ser. No. 07/255,153 filed 10/7/88 now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
93150 |
Jun 1982 |
JPX |
1331849 |
Sep 1973 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
255153 |
Oct 1988 |
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