Bearing, unit for converting a flat substrate, and methods for mounting and removing a rotary tool
AssigneeBobst Mex SA
InventorsBoris Béguin, Philippe Clément, Mathieu Gavin
Life of this patent
Estimating the term…
Abstract
A bearing for holding a rotary conversion tool (10, 11) that includes two end rolling bearing devices (26, 28), at least one intermediate rolling bearing device (27) interposed between the end rolling bearing devices (26, 28), the end and intermediate rolling bearing devices (26, 27, 28) being intended to engage with an end (10a, 10b, 11a, 11b) of the rotary tool (10, 11), and at least one mechanical actuator (32, 33) configured to exert a radial preload force (Fo, Fo′) at the intermediate rolling bearing device (27).
Claims11
A bearing assembly for a converting machine, the bearing assembly comprising a first bearing configured to hold a first rotary conversion tool, and a second bearing configured to hold a second rotary conversion tool positioned underneath and cooperating with the first rotary conversion tool to convert a substrate passing between the first and second rotary conversion tools, the first and second rotary conversion tools having parallel longitudinal axes, the first bearing comprising:
- a first end rolling bearing device engaging with an end of the first rotary conversion tool;
- a second end rolling bearing device engaging with the end of the first rotary conversion tool and spaced apart in a longitudinal axis direction from the first end rolling bearing device;
- at least one first intermediate rolling bearing device interposed between the first and second end rolling bearing devices, the at least one first intermediate rolling bearing device engaging with the end of the first rotary conversion tool;
- and
- at least one first mechanical actuator positioned above the first rotary conversion tool and exerting a radial preload force in a first radial direction at the first intermediate rolling bearing device;
- the second bearing comprising:
- a second intermediate bearing positioned in the longitudinal axis direction between the first and second end rolling bearing devices, the second intermediate rolling bearing device engaging with an end of the second rotary conversion tool;
- and
- a second mechanical actuator positioned under the second rotary conversion tool and exerting a second radial preload force in a second radial direction at the second intermediate rolling bearing device,
- wherein the first mechanical actuator provides the first radial force such that the first radial force urges the first intermediate bearing in a linear direction opposite to the second radial direction of the second radial force provided by the second mechanical actuator,
- wherein the first radial direction of the preload force is opposed to a direction of a radial reaction force on the first rotary conversion tool.
Dependencies are inferred from the claim text.