Inductively heated drawroll

Details Inductively heated drawroll Inductively heated drawroll

1974-10-24

1977-01-25

Bartis, A.

Electric heating

Metal heating

Of cylinders

28 62, 219 1049, 219 1079, 219469, H05B 500, H05B 302, D02J 1300

Patent

active

040053024

ABSTRACT:
A heatable drawroll for drawtwisting, draw-winding and spin-draw winding machines includes a stationary induction heating coil having a core and mounted within rotatable metal jacket. A sleeve of heat and electrical insulating material is stationarily disposed inside the jacket in radially spaced relation to the jacket and the coil to circumferentially surround the coil and form an intermediate space therewith for receiving a coolant for cooling the coil. Means are provided for supplying coolant to and removing coolant from the intermediate space. A second coolant space can also be formed between the coil and the core and be connected with the first space via coolant ducts through the coil. The sleeve may be porous so as to allow some of the coolant to flow therethrough and impinge on the inner surface of the jacket.

REFERENCES:
patent: 2273423 (1942-02-01), Somes
patent: 3412229 (1968-11-01), Seagrave
patent: 3601968 (1971-08-01), Wirz
patent: 3761666 (1973-09-01), Graf et al.
patent: 3772492 (1973-11-01), Brogden et al.

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