Winding – tensioning – or guiding – Loop forming – By orbital guide
Patent
1997-08-29
1998-11-24
Darling, John P.
Winding, tensioning, or guiding
Loop forming
By orbital guide
72 66, B21C 4700
Patent
active
058396845
ABSTRACT:
A lined spiral-forming pipe (11) for a spiral-forming head of spiralling machines for metallic wire, comprising a plurality of wear-resistant inserts having an inner hollow through which the metallic wire passes and an outer surface connecting with the inner surface of the spiral-forming pipe (11) and an inner through hollow (12). The wear-resistant inserts (10) are substantially all alike with a substantially annular conformation with a longitudinal dimension ("1") mating with the minimum radius of curvature of the spiral-forming pipe (11), and have rounded front faces (10a) at least partly convex. The inner through hollow (12) comprises a first lead-in segment (12a) to introduce the metallic wire and a second following segment (12b) which is substantially cylindrical. Also included is a method to recondition a spiral-forming pipe (11) of a spiral-forming head in spiralling machines for metallic wire.
REFERENCES:
patent: 4047543 (1977-09-01), Burow
patent: 4052498 (1977-10-01), Burow
patent: 4074553 (1978-02-01), Woodrow
patent: 4332155 (1982-06-01), Pariseau
patent: 4353513 (1982-10-01), Holthoff
patent: 4765556 (1988-08-01), Nasrah
De Marco Fausto
Poloni Alfredo
Danieli & C. Officine Meccaniche SpA
Darling John P.
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