Expanding mechanism for tensioning and positioning reel cores

Details Expanding mechanism for tensioning and positioning reel cores Expanding mechanism for tensioning and positioning reel cores

1991-02-19

1992-06-23

Levy, Stuart S.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 683, 242 681, B65H 7518, B65H 1902

Patent

active

051236052

ABSTRACT:
A mechanism for tensioning and positioning reel cores, especially in machines for winding and unwinding webs of paper and cardboard, having a cylindrical eccentric tensioning component (10) that is mounted on a journal rigidly connected to a driveshaft or brake shaft, that expands radially when its circumference moves relative to the journal, and that interlocks with the core by way of elevations distributed around its outside circumference. A cylindrical positioning head with a smooth surface is concentrically connected to the driveshaft or brake shaft and is followed by the tensioning component. The diameter of the positioning head equals the inside diameter of the core. The tensioning component is axially shorter than the positioning head. The outside diameter of the unexpanded tensioning component is slightly longer than the outside diameter of the positioning head and is concentric with it.

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