Method and apparatus for embossing the inside surface of a cup-s

Details Method and apparatus for embossing the inside surface of a cup-s Method and apparatus for embossing the inside surface of a cup-s

1987-03-23

1988-11-22

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With tool surface orbiting around axis parallel to direction...

72265, 72354, B21D 2400

Patent

active

047856483

ABSTRACT:
A draw/emboss work station (18) of the invention includes emboss punch apparatus (86) moveable by a lever (340) and a hydraulic system under control of a press slide (34). Pressure sleeve apparatus (92) is slideable with respect to the emboss punch apparatus (86) and is responsive to force applied to it by the press slide (34). An emboss punch head (96) is moved downwardly into a cup-shaped article (14) to bring the article into a draw/emboss die (146) having an interior reduced diameter part (148). The emboss punch head (96) then remains stationary and spaced from the reduced diameter part a predetermined distance to define an annular opening. The pressure sleeve apparatus (92) incuding a pressure sleeve (130) is then forced downwardly into engagement with a shoulder (64) on the cup (14), and forces the cup (14) through the annular opening to thereby simultaneously draw the sidewalls of the cup (14) and transfer the design of the emboss punch head (96) to the inside surface of the cup (14).

REFERENCES:
patent: 1310122 (1919-07-01), Leighton et al.
patent: 3830087 (1974-08-01), Nakamura et al.
patent: 4175416 (1979-11-01), Fukushima et al.
patent: 4509356 (1985-04-01), Budrean et al.
patent: 4527413 (1985-07-01), Budrean et al.
patent: 4559802 (1985-12-01), Budrean et al.
patent: 4562719 (1986-01-01), Budrean et al.
William G. McEwan, "Extrusion of Thin Wall Tubes Eliminates Machining", Dec. 1963, The Tool and Manufacturing Engineer; pp. 89-90.

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