Metal working – Means to assemble or disassemble – Means to drive self-piercing work part
Patent
1995-09-01
1997-08-19
Bryant, David P.
Metal working
Means to assemble or disassemble
Means to drive self-piercing work part
29818, B23P 1900
Patent
active
056575360
ABSTRACT:
An apparatus has a punch (3) for striking the self-piercing nut `N` to one side of a metal panel `W`, a piercing-caulking die (5) facing the punch and located on the other side of the panel, and a nut holder (4) having formed in it a guide passage (10) slidable relative to and fitting on the punch. The nut holder further has a nut-feeding aperture (11) opened perpendicular to the passage (10), and the punch (3) is connected by a back plate (7) to a base (8), with the die (5) being driven towards and away from the punch. A cylinder (20) fixed on the back plate drives the nut holder (4) fore and aft along the punch, so that the nut is fed through the aperture (11) into an area located near and ahead of the punch's end when the nut holder is retracted. The punch's end will be located in flush with or slightly protruding ahead of the passage's end opening when the holder is extended. The apparatus is installable in a press of a small shut height and can attach the nuts to an inner side of any metal plate of a shape such as a reversed-U or -L or hat-shape.
REFERENCES:
patent: 3108368 (1963-10-01), Steward
patent: 3718965 (1973-03-01), Steward
patent: 4164072 (1979-08-01), Shinjo
patent: 4242793 (1981-01-01), Matthews et al.
patent: 4384667 (1983-05-01), Smallegan et al.
patent: 4700470 (1987-10-01), Muller
patent: 4785529 (1988-11-01), Pamer et al.
patent: 5522129 (1996-06-01), Shinjo
Bryant David P.
Yugenkaisha Shinjo Seisakusho
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