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US 11,969,989 B2Granted
Printing machine and method of operating a printing machine
AssigneeBobst Bielefeld GmbH
InventorsMichael Karakatsanis, Andreas Garbsch, Viktor Hildebrand
Life of this patent
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Abstract
A printing machine (10) comprises a doctor blade (14), a drive system (20) for urging the doctor blade (14) against a printing cylinder (16) of the printing machine (10), a sensor (32) adapted for sensing a force with which the doctor blade (14) is urged against the printing cylinder (16), and a mechanical locking element (34) adapted for locking the drive system (20) in its operating position. Further, a method of operating a printing machine (10) is presented.
Claims20
A printing machine comprising:
- a doctor blade,
- a drive system including a piston for urging the doctor blade in a first direction against a printing cylinder of the printing machine,
- a sensor adapted for sensing a force with which the doctor blade is urged against the printing cylinder when the printing cylinder is substantially static, wherein the sensor is arranged on the piston, and
- a mechanical locking element adapted for locking the drive system in an operating position so that when the mechanical locking element locks the drive system, the mechanical locking element restricts the drive system from moving in the first direction and a second direction opposite to the first direction.
1 more element
A printing machine comprising:
- a doctor blade;
- a drive system to move the doctor blade in a first direction toward a printing cylinder and a second direction opposite to the first direction, the second direction being a direction away from the printing cylinder, wherein the drive system includes (i) a piston to move the doctor blade and (ii) a first pneumatic cylinder to move the piston;
- and
- a mechanical locking element to (i) lock the drive system to restrict a movement of the drive system in the first direction and the second direction, and (ii) unlock the drive system to allow the movement of the drive system in the first direction and the second direction, wherein the mechanical locking element includes a second pneumatic cylinder.
1 more element
A printing machine comprising:
- a doctor blade;
- a drive system including a first pneumatic cylinder;
- a mechanical locking element including a second pneumatic cylinder;
- and
- one or more controllers configured to:
- control the first pneumatic cylinder of the drive system to move the doctor blade in a first direction toward a printing cylinder and a second direction opposite to the first direction, the second direction being a direction away from the printing cylinder, and
- control the second pneumatic cylinder of the mechanical locking element to (i) lock the drive system to restrict a movement of the drive system in the first direction and the second direction, and (ii) unlock the drive system to allow the movement of the drive system in the first direction and the second direction.
4 more elements
Dependencies are inferred from the claim text.