Apparatus and method for doming bottoms of containers

Details Apparatus and method for doming bottoms of containers Apparatus and method for doming bottoms of containers

1991-06-04

1992-06-30

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72465, B21D 2416

Patent

active

051252570

ABSTRACT:
Domer apparatus includes a housing having a cavity therein; an inner die being disposed in the cavity and being disposed around a longitudinal ram axis; an outer die being disposed in the cavity, being disposed around the longitudinal ram axis, and being disposed circumferentially around the inner die; second, third, and fourth springs being disposed in the cavity radially outward from the longitudinal ram axis, being circumferentially spaced-apart, and operatively engaging the inner die; and an air spring being disposed outwardly of the housing distal from the outer die, and providing a resilient force to the outer die along a plurality of paths that include a plurality of push rods, that are disposed radially outward of the longitudinal ram axis, and that extend longitudinally past the second, third, and fourth springs.

REFERENCES:
patent: 2331491 (1943-10-01), Menkin
patent: 4289014 (1981-09-01), Maeder et al.
patent: 4733550 (1988-03-01), Williams
patent: 4930330 (1990-06-01), Weishalla

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