Devices for adjusting the contact pressure of an adjustably mounted cylinder
The contact pressure between an adjustably mounted first cylinder and a second cylinder in a printing machine, and particularly in a web-fed printing machine can be adjusted. An actuator is usable to force the first cylinder toward the second cylinder with an adjustable force. A fixing device is usable to fix the first cylinder in a desired position relative to the second cylinder.
1. A device for adjusting a position of a displaceable roller with respect to at least one fixed roller comprising:
a roller holder supporting said displaceable roller;
a frame holder supported for movement of said displaceable roller between an in-contact position and an out of contact position with respect to said at least one fixed roller;
a circumferential gap between said roller holder and said frame holder;
at least one actuator in said circumferential gap; and
a fixation device usable to fix said displaceable roller in place relative to said at least one fixed roller, said fixation device having multi-disk elements adapted to fix said displaceable roller in place, said multi-disk elements being arranged substantially perpendicularly to an axis of rotation of said disolaceable roller.
2. The device of claim 1 wherein said fixation device extends coaxially to a longitudinal axis of said displaceable roller and is centered about a center axis of said device.
3. The device of claim 1 wherein said displaceable roller is one of an inking roller and a dampening roller of a printing press.
4. The device of claim 1 wherein said actuator places said displaceable roller against or away from said at least one fixed roller.
5. The device of claim 1 wherein said frame holder has a first radial size and said displaceable roller has a second radial size, said first radial size being less than said second radial size.
6. The device of claim 1 wherein said frame holder is a housing forming said gap.
7. A device for adjusting a contact pressure between a displaceable roller and at least one fixed roller in a web-fed rotary printing press comprising:
a roller holder supporting said displaceable roller;
a frame holder supporting said roller holder, said roller holder being displaceable with respect to said frame holder;
at least one actuator adapted to push said displaceable roller toward said at least one fixed roller with an adjustable pressure;
a fixation device usable to fix said displaceable roller in place relative to said at least one fixed roller;
a section of one of said roller holder and said frame holder and being in engagement with a recess in the other of said roller holder and said frame holder, said recess and said section being rotationally symmetrical; and
a circumferential gap between said recess and said section, said at least one actuator being in said gap.
8. The device of claim 7 wherein said recess and said section extend substantially coaxially along a longitudinal axis of said displaceable roller.
9. The device of claim 7 wherein said circumferential gap has a circumferential width of between 1 mm and 10 mm.
10. The device of claim 9 wherein said circumferential width is 2 mm.
11. The device of claim 7 wherein an exterior diameter of said roller holder and of said frame holder is less than an outer diameter of said displaceable roller.
12. The device of claim 7 further including at least three actuators in said gap and each being adapted to displace said displaceable roller in a different direction.
13. The device of claim 7 wherein said at least one actuator is a pressure body adapted to receive a pressure medium.
14. The device of claim 13 wherein said pressure medium is a gas under pressure.
15. The device of claim 7 wherein said at least one actuator is a pressure hose forming a pressure chamber.
16. The device of claim 15 further including four pressure hoses arranged in said gap equidistant from each other and about a circumference of said gap.
17. The device of claim 7 further including a quick-release coupling between said roller holder and said frame holder.
18. The device of claim 7 further including a controller for said actuator.
19. The device of claim 7 wherein said displaceable roller is one of an inking roller and a dampening roller of a printing press.
20. The device of claim 7 wherein said frame holder has a first radial size and said displaceable roller has a second radial size, said first radial size being less than said second radial size.
21. The device of claim 7 wherein said frame holder is a housing forming said gap.
22. A device for adjusting a contact pressure between a displaceable roller and at least one fixed roller in a web-fed rotary printing cress comprising:
a roller holder supporting said displaceable roller;
a frame holder supporting said roller holder, said roller holder being displaceable with respect to said frame holder;
at least one actuator adapted to push said displaceable roller toward said at least one fixed roller with an adjustable pressure;
a fixation device usable to fix said displaceable roller in place relative to said at least one fixed roller;
a section of one of said roller holder and said frame holder and being in engagement with a recess in the other of said roller holder and said frame holder, and said recess and said section being rotationally symmetrical; and
a gap between said recess and said section, said at least one actuator being a pressure-proof diaphragm in said gap, said diaphragm encircling an inside of said gap and being connected to a wall of one of said roller holder and said frame holder and forming a plurality of pressure chambers, said actuator further including at least one pressure inlet.
23. A device for adjusting a contact pressure between a displaceable roller and at least one fixed roller in a web-fed rotary printing press comprising:
a roller holder supporting said displaceable roller;
a frame holder supporting said roller holder, said roller holder being displaceable with respect to said frame holder, said frame holder being supported for movement between any in-contact position and an out-of-contact position with respect to said at least one fixed roller;
at least one actuator adapted to push said displaceable roller toward said at least one fixed roller with an adjustable pressure;
a fixation device usable to fix said displaceable roller in place relative to said at least one fixed roller;
a section of one of said roller holder and said frame holder and being in engagement with a recess in the other of said roller holder and said frame holder; and
a gap between said recess and said section, said at least one actuator being in said gap.