1975-12-05
1976-10-05
Abercrombie, Willie G.
113 1F, 113 15A, 113121C, B21D 5126
Patent
active
039838277
ABSTRACT:
Method and apparatus for scoring one or more lines into the surface of a plastic part such as a container or container lid as the part is being formed. A forming press includes a plurality of die members adapted for movement within, and with respect to, a plurality of draw pads. A blank of sheet stock is placed between die members and draw pads. The die members are then moved relative to the draw pads to draw the radially outer periphery of the blank across the draw pads to form the part. As the part is being formed, scoring knives positioned in at least one of the draw pads and having scoring edges which extend above the draw pad surfaces are held against the surface of the part. As the part is drawn across the surfaces of the draw pads, it is scored in a manner determined by the locations and orientations of the scoring knives in the draw pad and the manner in which the part surface is drawn across the scoring edges.
REFERENCES:
patent: 3352268 (1967-11-01), Koll
patent: 3824941 (1974-07-01), Hannon
patent: 3868919 (1975-03-01), Schrecker et al.
Abercrombie Willie G.
Peerless Machine & Tool Corporation
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