Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1986-04-23
1987-12-29
Watkins, Donald
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 56R, 242 64, B65H 1920, B65H 1916, B65H 1928
Patent
active
047155523
ABSTRACT:
A multi-spindle turret winder of surface winding--center winding system provided with a first contact roller partaking in initial winding from a first winding station to an intermediate station and a second contact roller partaking in, after change-over from the former, winding-up to roll products from the intermediate station to a second winding station. In order to perform a transparent winding under a constant tension on a stretch film without air being entrapped in roll products, speed control means is provided to impart, immediately before press contact, a peripheral speed slightly faster than the first contact roller to the second contact roller and, after press contact, a peripheral speed gradually increasing at an increment proportional to the turning angle of the turrets during movement from the intermediate station to the second winding station; and a cam is provided which is actuated interlocking with the indexing motion of the turrets and has such a profile that limits a displacement magnitude of the first contact roller so as to increase variations in path length of the film in proportion to the turning angle of the turrets.
REFERENCES:
patent: 2736508 (1956-02-01), Langbo
patent: 3796388 (1974-03-01), Davis
patent: 4326679 (1982-04-01), Phelps et al.
patent: 4541583 (1985-09-01), Forman et al.
Kabushiki Kaisha Fuji Tekkosho
Watkins Donald
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