Winding mandrel tensioning means

Winding – tensioning – or guiding – Coil holder or support – Spool or core

Patent

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Details

242 72R, B65H 1804, B65H 7524

Patent

active

052794709

ABSTRACT:
A winding shaft is described, having self-tensioning individual winding elements (6) for winding mandrels mounted on it in such a way that they can be driven, which include in each case in an annular groove (14) of each individual winding element a compliant tensioning means, the outside diameter of which is greater than the inside diameter of the winding mandrels. The winding means comprises a plurality of cylindrical-annular segments (2) arranged on the circumference of the individual winding element in the annular groove, the end faces (13) of which segments are beveled and are mounted radially displaceably on the inner face of the intermediate pieces (3), there being seated between the inside of the segments and the bottom of the annular groove a spring element, comprising either a leaf spring or a plurality of helical springs with ball thrust pieces.

REFERENCES:
patent: 2274681 (1942-03-01), Fletcher
patent: 2620140 (1952-12-01), Naegeli
patent: 3544016 (1970-12-01), Cunningham et al.
patent: 3871592 (1975-03-01), Kallenborn
patent: 4026488 (1977-05-01), Hashimoto
patent: 4198007 (1980-04-01), Schoettle et al.
patent: 4893761 (1990-01-01), Gay

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