Wiping unit for ram of bodymaker

Details Wiping unit for ram of bodymaker Wiping unit for ram of bodymaker

1996-07-02

1997-11-18

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

277 24, B21D 2200, B21D 2221

Patent

active

056876050

ABSTRACT:
A bodymaker that transforms shallow metal cups into elongated can bodies includes a reciprocated ram which, during its forward stroke, drives the cups through a set of graduated circular dies. Ring shaped wipers engage the outer cylindrical surface of the ram and are arranged so that a first of the wipers scrapes tool coolant from the ram as the latter moves rearward and a second of the wipers scrapes hydraulic bearing fluid from the ram as the latter moves forward. The wipers are provided with flexible flaps that are in relatively low pressure frictional engagement with the ram resulting in only a very low temperature rise for the wipers to increase operating life thereof at production rates of approximately 400 per minute for cans of 21/2 inch diameter.

REFERENCES:
patent: 2776173 (1957-01-01), Rudy
patent: 3720418 (1973-03-01), Berg
patent: 3735629 (1973-05-01), Paramonoff
patent: 3825270 (1974-07-01), Paramonoff et al.
patent: 3871665 (1975-03-01), Burke et al.
patent: 4173138 (1979-11-01), Main
patent: 4976131 (1990-12-01), Grims et al.
patent: 5171023 (1992-12-01), Scott et al.

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