| 摘要 |
A system for changing a removable sleeve on a printing roller in a flexographic printing press is disclosed. Axially fixed bearing assemblies are installed on the mandrel of the printing roll, and positioned in a split bearing block. In changing the printing sleeve, at least one bearing block is opened to release the bearing assemblies as the mandrel is raised and fitted with a removable axial extension. The axial extension is then braced to support the roll in a raised position. The printing sleeve can then be axially extracted onto the extension, clearing the printing roller and the frame of the printing press. A second brace is then applied intermediate the printing roller and the extracted printing sleeve. Withdrawal of the first brace allows the printing sleeve to be entirely removed while the partially dismounted printing roller is stabilized by the second brace. A replacement printing sleeve is then placed over the axial extension, and the process reversed.
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