Printing press with cylinder sensor
A printing press includes at least one exchangeable cylinder ( 10, 12 ) that is rotatably supported in a machine frame, a movable bearing member ( 18 ) forming part of a bearing ( 44 ) for the exchangeable cylinder ( 12 ), and a sensor head ( 26, 28, 30 ) that is capable of receiving signals from a signalling device ( 22, 24, 32 ) that is mounted on one of the cylinders ( 10, 12 ) of the printing press, and the sensor head ( 26, 28, 30 ) is mounted on the movable bearing member ( 18 ) and is arranged to receive the signals from a signalling device ( 22, 24, 32 ) at least when the bearing member ( 18 ) is in a predetermined position.
1. A printing press comprising:
at least one exchangeable cylinder rotatably supported in a machine frame,
a movable bearing member forming part of a bearing for supporting a first exchangeable cylinder of the at least one exchangeable cylinder,
a signalling device mounted on one cylinder of said at least one exchangeable cylinder of the printing press, and
at least one sensor head adapted to receive signals from the signalling device, the at least one sensor head being mounted on the movable bearing member and being arranged to receive the signals from the signalling device at least when the bearing member is in a predetermined position,
wherein the at least one exchangeable cylinder has an axis, and the bearing member is rotatable about an axis that extends one of:
in parallel with, and
coincides with
the axis of said one cylinder containing said signalling device.
2. The printing press according to claim 1 , wherein the bearing member is rotatable about an axis that is defined by the associated bearing.
3. The printing press according to claim 2 , wherein the bearing member carries at least one said sensor head that is adapted to be, by rotating the bearing member, tilted into an active position in which the bearing member receives signals from the signalling device of said one cylinder.
4. The printing press according to claim 1 , wherein the first exchangeable cylinder that is supported in the bearing associated with the bearing member includes an RFID chip as the signalling device, and the bearing member includes a corresponding RFID reader as one said sensor head.
5. The printing press according to claim 1 , wherein:
the signalling device includes a position mark,
one said associated sensor head includes a position sensor, and
one of:
the movable bearing member and
an associated component part
has mounted thereon a position measuring device for measuring a position of the bearing member relative to said component part.
6. The printing press according to claim 5 , wherein:
the first exchangeable cylinder has an axis,
the bearing has a bearing arm carrying the bearing member, said bearing arm being slideable along an axis in parallel with the axis of said first exchangeable cylinder, and
the position measuring device is arranged for measuring an axial position of the bearing member relative to the component part.
7. The printing press according to claim 6 , wherein the bearing arm is tiltable about an axis that extends in parallel with the axis of the first exchangeable cylinder.
8. The printing press according to claim 5 , wherein the position measuring device comprises at least one magnet and a corresponding magnet sensor.
9. A printing press comprising:
at least one exchangeable cylinder rotatably supported in a machine frame,
a movable bearing member forming part of a bearing for supporting a first exchangeable cylinder of the at least one exchangeable cylinder,
a signalling device mounted on one cylinder of said at least one exchangeable cylinder of the printing press, and
at least one sensor head adapted to receive signals from the signalling device, the at least one sensor head being mounted on the movable bearing member and being arranged to receive the signals from the signalling device at least when the bearing member is in a predetermined position,
wherein the bearing member carries two sensor heads which can alternatingly be tilted into an active position.
10. The printing press according to claim 9 , wherein the first exchangeable cylinder that is supported in the bearing associated with the bearing member includes an RFID chip as the signalling device, and the bearing member includes a corresponding RFID reader as one said sensor head.
11. The printing press according to claim 9 , wherein:
the signalling device includes a position mark,
one said associated sensor head includes a position sensor, and
one of:
the movable bearing member and
an associated component part
has mounted thereon a position measuring device for measuring a position of the bearing member relative to said component part.
12. The printing press according to claim 11 wherein:
the first exchangeable cylinder has an axis,
the bearing has a bearing arm carrying the bearing member, said bearing arm being slideable along an axis in parallel with the axis of said first exchangeable cylinder, and
the position measuring device is arranged for measuring an axial position of the bearing member relative to the component part.
13. The printing press according to claim 12 , wherein the bearing arm is tiltable about an axis that extends in parallel with the axis of the first exchangeable cylinder.
14. The printing press according to claim 11 , wherein the position measuring device comprises at least one magnet and a corresponding magnet sensor.
15. The printing press according to claim 9 , wherein the bearing member carries at least one said sensor head that is adapted to be, by rotating the bearing member, tilted into an active position in which the bearing member receives signals from the signalling device of said one cylinder.
16. A printing press comprising:
at least one exchangeable cylinder rotatably supported in a machine frame,
a movable bearing member forming part of a bearing for supporting a first exchangeable cylinder of the at least one exchangeable cylinder,
a signalling device mounted on one cylinder of said at least one exchangeable cylinder of the printing press, and
at least one sensor head adapted to receive signals from the signalling device, the at least one sensor head being mounted on the movable bearing member and being arranged to receive the signals from the signalling device at least when the bearing member is in a predetermined position,
wherein:
the signalling device includes a position mark,
one said associated sensor head includes a position sensor, and
one of:
the movable bearing member and
an associated component part
has mounted thereon a position measuring device for measuring a position of the bearing member relative to said component part, and
wherein the bearing member is rotatable, and the position measuring device is arranged for detecting an angular position of the bearing member relative to the component part.
17. The printing press according to claim 16 , wherein:
the first exchangeable cylinder has an axis,
the bearing has a bearing arm carrying the bearing member, said bearing arm being slideable along an axis in parallel with the axis of said first exchangeable cylinder, and
the position measuring device is arranged for measuring an axial position of the bearing member relative to the component part.
18. The printing press according to claim 17 , wherein the bearing arm is tiltable about an axis that extends in parallel with the axis of the first exchangeable cylinder.
19. The printing press according to claim 16 , wherein the position measuring device comprises at least one magnet and a corresponding magnet sensor.
20. The printing press according to claim 16 , wherein the bearing member carries at least one said sensor head that is adapted to be, by rotating the bearing member, tilted into an active position in which the bearing member receives signals from the signalling device of said one cylinder.