Can necking apparatus with spindle containing pressurizing gas r

Details Can necking apparatus with spindle containing pressurizing gas r Can necking apparatus with spindle containing pressurizing gas r

1992-04-23

1993-10-05

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

723794, 413 69, B21D 4104

Patent

active

052494497

ABSTRACT:
A method and machine for forming can necks in metal container bodies is disclosed. The machine comprises a pilot assembly coaxially situated and longitudinally movable with respect to and within a necking die member having an annular static die forming surface longitudinally advanced into contact with the can side wall defining the open end. Prior to necking, the pilot assembly is inserted into the open end and then stopped. Continued forward movement of the necking die member opens a valve between the pilot assembly and die member to flow pressurized fluid from a reservoir in the pilot to pressurize the can. This prevents crushing of the can under necking loads. The reservoir is located entirely within the pilot shaft and has a dimensional volume greater than the can body interior volume. This results in rapid delivery of pressurized fluid into the can before the greatest necking loads are applied to the side wall.

REFERENCES:
patent: 3812696 (1974-05-01), Kneusel et al.
patent: 4446714 (1984-05-01), Cvacho
patent: 4457158 (1984-07-01), Miller et al.
patent: 4693108 (1987-09-01), Traczyk et al.
patent: 4723430 (1988-02-01), Hahn
patent: 4732027 (1988-03-01), Traczyk et al.
patent: 4801241 (1989-01-01), Zajac et al.
patent: 4844358 (1989-07-01), Kamp
patent: 4860519 (1989-08-01), Lemaire et al.
patent: 4922276 (1990-05-01), Lamprecht et al.
patent: 5018379 (1991-05-01), Shirai et al.

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