Method and apparatus for exchanging a roll of a printing press
AssigneePaper Converting Maching Company
InventorsDale E. Zeman, William J. Van Ryzin, Robert J. Manders, Craig T. Compton
Life of this patent
Estimating the term…
Abstract
A side shift mechanism for a deck of a printing press enables a roll, for example, a plate roll and/or an anilox roll, to be shifted axially so that one end of the roll extends out of the frame of the press. The extended roll or a sleeve on the roll is thereby made accessible for easy exchange. After the roll or sleeve is exchanged, the roll is shifted back to its original position.
Claims15
A printing press comprising:
- front and back frames,
- a front bearing supported on the front frame,
- a back bearing supported on the back frame,
- an elongated roll extending axially between the front and back frames, the roll having front and back ends which are rotatably supported by the front and back bearings,
- a linear guide mounted on the back frame and extending axially relative to the roll, the linear guide supporting the back bearing for movement in the axial direction of the roll,
- the front bearing being movably mounted on the front frame between a first position in which the front bearing rotatably supports the front end of the roll and a second position in which the front bearing does not support the front end of the roll, and
- means for moving the back bearing and the roll in the axial direction of the roll.
A printing press comprising:
- front and back frames,
- a central impression cylinder having an axis and which is rotatably mounted in the front and back frames,
- a first linear guide mounted on the front frame and extending perpendicularly to the axis of the central impression cylinder,
- a front bearing slidably mounted on the first linear guide in a direction which is perpendicular to the axis of the central impression cylinder,
- a back bearing mounted on the back frame,
- a roll having an axis which extends parallel to the axis of the central impression cylinder, the roll having front and back ends which are rotatably supported by the front and back bearings,
- a second linear guide mounted on the back frame and extending axially relative to the roll, the second linear guide supporting the back bearing for movement in the axial direction of the roll,
- the front bearing being movable on the first linear guide between a first position in which the front bearing rotatably supports the front end of the roll and a second position in which the front bearing does not support the front end of the roll, and
- means for moving the back bearing and the roll in the axial direction of the roll.
A method of changing a sleeve on a printing press roll which is rotatably mounted in front and back bearings which are mounted on front and back frames of a printing press, the roll including a mandrel and a sleeve on the mandrel, the sleeve having front and back ends which are adjacent the front and back bearings, comprising the steps of:
- moving the roll in an axial direction away from the front bearing,
- moving the front bearing out of axial alignment with the roll,
- moving the sleeve in an axial direction toward the front frame so that front end of the sleeve extends through the front frame, and
- removing the sleeve from the mandrel by pulling the front end of the sleeve.
A method of changing a sleeve on a printing press roll which is rotatably mounted in front and back bearings which are mounted on front and back frames of a printing press, the roll including a mandrel and a sleeve on the mandrel, the sleeve having front and back ends which are adjacent the front and back bearings, comprising the steps of:
- moving the roll in an axial direction away from the front bearing,
- moving the front bearing out of axial alignment with the roll,
- moving the mandrel in an axial direction toward the back frame while preventing axial movement of the sleeve so that the mandrel moves backwardly relative to the sleeve,
- moving the roll and the sleeve in an axial direction toward the front frame so that front end of the sleeve extends through the front frame, and
- removing the sleeve from the roll by pulling the front end of the sleeve.
Dependencies are inferred from the claim text.