Method of and apparatus for dispensing wire from a wire storage

Details Method of and apparatus for dispensing wire from a wire storage Method of and apparatus for dispensing wire from a wire storage

1982-03-02

1985-07-23

Levy, Stuart S.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 54R, B65H 5938

Patent

active

045304718

ABSTRACT:
A method of and apparatus for dispensing wire from a massive storage spool make use of a rotary support for holding the storage spool and in bearing contact therewith. The rotary support comprises a pair of rollers, one of which is rotationally driven by a motor to turn the spool whereby to permit the wire to be unwound therefrom. The unwound wire is subject to a traction force applied by a capstan and pinch roller driven to advance the wire between outlet guide rollers into a utilization zone, e.g. the cutting zone in a wire-cut EDM machine. A sensor is provided to detect a deviation of the tension of the wire between the outlet guides and the storage spool from a predetermined value. The output of the sensor is applied to a servo control circuit for the motor rotating the rotary support and the wire storage spool so as to maintain the tension of the wire constant. The storage spool rotary support, capstan and the outlet guides are carried on a wheeled carrier and are also enclosed within an electrical shield to prevent emission of electrical noise produced therein.

REFERENCES:
patent: 2844773 (1958-07-01), Turner et al.
patent: 2981491 (1961-04-01), Eans, Jr.
patent: 3526368 (1970-09-01), Sanders
patent: 3559906 (1971-02-01), Krafft
patent: 3765988 (1973-10-01), Schaffer et al.
patent: 4052019 (1977-10-01), Dickson, Jr.
patent: 4120462 (1978-10-01), Raasch et al.
patent: 4327873 (1982-05-01), Juppet et al.

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