Spring-loaded part extractors for heated forming tools

Details Spring-loaded part extractors for heated forming tools Spring-loaded part extractors for heated forming tools

2006-07-25

2006-07-25

Jones, David (Department: 3725)

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

C072S060000, C072S340000, C029S421100

Reexamination Certificate

active

07080535

ABSTRACT:
A hot blow-forming apparatus includes opposed and complementary forming tools adapted for hot blow forming a surface of a heated sheet-metal workpiece against a forming surface of one of the tools. The tools are also adapted to close upon and grip a peripheral edge of the workpiece and perform work on a central portion of the workpiece to produce a formed panel. The tools incorporate an improved extraction apparatus, which includes a plurality of opposed and complementary spring-loaded extractor pads. Opposed extractor pads are spring-loaded to different levels so as to apply spring-load differentials therebetween and thereby apply different extraction forces in different locations of the resultant formed panel for distortion-free removal of the formed panel from the working surfaces of the tooling.

REFERENCES:
patent: 5214949 (1993-06-01), Cadwell
patent: 6253588 (2001-07-01), Rashid et al.
patent: 6615631 (2003-09-01), Kleber et al.
patent: 6837087 (2005-01-01), Kleber et al.
patent: 6843088 (2005-01-01), Kruger et al.

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