Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1987-11-13
1989-05-02
Gilreath, Stanley N.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 45, B65H 5400, B65H 5900
Patent
active
048260932
ABSTRACT:
Apparatus for winding at least one elongate element with a constant linear speed, such apparatus comprising a feeding mechanism 3, 4, 30, 31, 32 for said elongate element 1, a reel 6 and an induction motor 39 which drives said reel with a fixed gear ratio, the induction motor 39 having such a torque/rotational speed characteristic which is approximately equal to the torque/rotational speed characteristic necessary to obtain a constant tension in the elongate element. The torque/rotational speed characteristic for constant tension is obtained by control means 37 for adapting the frequency and the voltage magnitude of the drive signal for said induction motor. The feeding mechanism preferably comprises an electric motor 30, a transmission 31, 32 and a capstan 3. The control means preferably comprises an AC generator 37 which drives the induction motor and is rotated at a speed which is proportional to the rotation speed of the electric motor 30 of the feeding mechanism.
REFERENCES:
patent: 2459064 (1949-01-01), Davis
patent: 3193209 (1965-07-01), Hambach
S. Noodleman, Torque Motors and Brakes, Product Engineering, Apr. 1957, 7 pages.
Gilreath Stanley N.
N.V. Bekaert S.A.
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