Wire tensioning and feeding device

Details Wire tensioning and feeding device Wire tensioning and feeding device

1978-05-22

1979-10-30

Schacher, Richard A.

Advancing material of indeterminate length

By fluid current

And web storage

226195, B65H 1732

Patent

active

041725441

ABSTRACT:
A self-threading and tensioning device for use with a semiconductor bonder, or the like, is disclosed. A first pneumatic stream is used to obtain the self-threading of the thin (e.g. 1 mil.) bonding wire. A second pneumatic stream provides the tensioning of the wire during the bonding process.

REFERENCES:
patent: 2302790 (1942-11-01), Modigliani
patent: 3319859 (1967-05-01), Miller
patent: 3669328 (1972-06-01), Castelli

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