Electromagnetic re-draw sleeve actuator

Details Electromagnetic re-draw sleeve actuator Electromagnetic re-draw sleeve actuator

1993-02-18

1994-07-05

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72430, B21D 2410

Patent

active

053256999

ABSTRACT:
A linear electromagnetic actuator has it core mounted to a can body forming apparatus and its coil attached to re-draw sleeve of such apparatus. The actuator provides for the axial movement of the re-draw sleeve between its fully retracted position and its fully extended position. The re-draw sleeve and the coil are coaxially mounted to each other so that the force exerted on the re-draw sleeve is also coaxial. Once the re-draw sleeve is in its fully extended position, an electromagnet is turned on so that the re-draw sleeve exerts the requisite force on the can material preform. The electromagnet is mounted coaxially about the re-draw sleeve and exerts its force on a magnetic material ring mounted to the re-draw sleeve to hold the re-draw sleeve against the can material preform.

REFERENCES:
patent: 1606141 (1926-11-01), Brown
patent: 3584496 (1971-06-01), Keller
patent: 3696657 (1972-10-01), Maytag
patent: 3704619 (1972-12-01), Paramonoff
patent: 4656400 (1987-04-01), Pailthorp et al.
patent: 4702098 (1987-10-01), Pora
patent: 4808955 (1989-02-01), Godkin et al.
patent: 4912343 (1990-03-01), Stuart
patent: 4934167 (1990-06-01), Grims et al.
patent: 4937481 (1990-06-01), Vitale
patent: 5129252 (1992-07-01), Hahn et al.
patent: 5212977 (1993-05-01), Stuart

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