Slide fastener coupling element forming apparatus

Details Slide fastener coupling element forming apparatus Slide fastener coupling element forming apparatus

1993-06-25

1994-10-25

Briggs, William

Metal working

Plural diverse manufacturing apparatus including means for...

Forging and bending, cutting or punching

29 332, 29410, 29769, 72427, B21D 5356

Patent

active

053576632

ABSTRACT:
In a slide fastener coupling element forming apparatus, a blank wire of a generally Y-shape cross section intermittently supplied at a predetermined pitch is cut off into pieces of a predetermined thickness by a fixed cutting punch and a reciprocating cutting die, and then a bulge for the head portion of a coupling element is formed by a forming die and a forming punch movable upwardly and downwardly to coact with the forming die. The forming die is located to be connected with the forward end in the stroke direction of the cutting die, and the forming punch is located upwardly of the bulge forming station. Then the opposite leg portions of a coupling element are pushed out of the mold of the forming die by a vertically movable ejector pin located under the leg portions on the forming die to discharge the formed coupling element from the forming die.

REFERENCES:
patent: 2473623 (1949-06-01), Voity
patent: 2596888 (1952-05-01), Coan
patent: 2744560 (1952-05-01), Johns et al.
patent: 3490133 (1970-01-01), Glindmeyer et al.
patent: 4404722 (1983-09-01), Shimai
patent: 4432126 (1984-02-01), Sugahara
patent: 4550477 (1985-11-01), Iai
patent: 4809533 (1989-03-01), Owens

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