Back to results
US 5,692,442 AGranted
Web printing apparatus
AssigneeInterflex Corporation
InventorDale D. Leanna
Life of this patent
Estimating the term…
Abstract
Flexographic web printing apparatus constructed for continuous web feed and for change-over from printing one impression on the web to printing a succeeding impression on the fly without interrupting the web feed.
Claims13
Web printing apparatus comprising:
- a frame comprising spaced-apart side frame members extending longitudinally with respect to the apparatus;
- an impression roll journalled at opposite ends thereof in bearings on the side frame members for rotation on a generally horizontal axis extending transversely across the frame, said axis lying in a generally vertical plane extending transversely of the apparatus, said impression roll being adapted for travel therearound of a web to be imprinted;
- a first and a second plate roll and plate roll inking unit, one unit on one side and the other unit on the other side of said plane;
- each of said plate roll and plate roll inking units comprising:
- a base carried by the frame for movement transversely with respect to the frame;
- a first and second carriage carried by the base for movement therewith transversely with respect to the frame and for movement relative to the base and relative to each other longitudinally with respect to the apparatus;
- a plate roll having a length less than the length of the impression roll carried by one of said carriages for engagement of a printing plate on the plate roll with the web travelling around the impression roll on the respective side of said plane;
- means for inking said plate roll carried by the other of said carriages;
- means for moving the base of each of said units to different positions of adjustment transversely of the apparatus for engagement of a printing plate on each of the plate rolls with the web travelling around the impression roll at different positions along the length of the impression roll;
- means associated with each of said units for moving the carriage of each unit carrying the plate roll thereof relative to the base of the unit longitudinally with respect to the apparatus for engagement of the printing plate on the respective plate roll with said web travelling around the impression roll and for retraction of the plate roll from the impression roll for taking the respective plate roll out of operation and for utilization of plate rolls of different diameter;
- and
- means associated with each of the units for moving the carriage of each unit carrying the inking means relative to the base of the unit longitudinally with respect to the apparatus for engagement of the respective inking means with the respective plate roll and for retraction of the respective inking means from the respective plate roll for utilization of plate rolls of different diameter.
9 more elements
Web printing apparatus comprising:
- a frame comprising spaced-apart side frame members extending longitudinally with respect to the apparatus on opposite sides of a central generally vertical longitudinal plane of the apparatus;
- an impression roll journalled at opposite ends thereof in bearings on the side frame members for rotation on a generally horizontal axis extending transversely across the frame, said axis lying in a generally vertical plane extending transversely of the apparatus said impression roll being adapted for travel therearound of a web to be imprinted;
- a first and a second group of plate rolls and plate roll inking means carried by the frame, one group on one side and the other group on the other side of said vertical transverse plane;
- each of said first and second groups comprising a first and a second plate roll and plate roll inking unit, one unit on one side and the other unit on the other side of said central longitudinal plane of the apparatus;
- each of said plate roll and plate roll inking units comprising:
- a base carried by the frame on the respective side of said central longitudinal plane for movement transversely with respect to the frame between the respective side frame member and said central longitudinal plane;
- a first and a second carriage carried by the base for movement therewith transversely with respect to the frame and for movement relative to the base and relative to each other longitudinally with respect to the apparatus;
- a plate roll having a length less than half the length of the impression roll carried by one of said carriages for engagement of a printing plate on the plate roll with the web travelling around the impression roll on the respective side of said vertical transverse plane and between the respective side of the frame and said central longitudinal plane;
- means for inking said plate roll carried by the other of said carriages;
- means for moving the base of each of said first and second units of each of said first and second groups to different positions of adjustment transversely of the apparatus for engagement of the printing plates on the plate rolls with the web travelling around the impression roll at different positions along the length of the impression roll;
- means associated with each of said units for moving the carriage of each unit carrying the plate roll thereof relative to the base of the unit longitudinally with respect to the apparatus for engagement of the printing plate on the respective plate roll with said web travelling around the impression roll and for retraction of the plate roll from the impression roll for taking the respective plate roll out of operation and for utilization of plate rolls of different diameter;
- and
- means associated with each of the units for moving the carriage of each unit carrying the inking means relative to the base of the unit longitudinally with respect to the apparatus for engagement of the respective inking means with the respective plate roll and for retraction of the respective inking means from the respective plate roll for utilization of plate rolls of different diameter.
10 more elements
Dependencies are inferred from the claim text.