Weld nut welding apparatus

Details Weld nut welding apparatus Weld nut welding apparatus

1985-07-12

1986-09-02

Albritton, Clarence L.

Electric heating

Metal heating

For bonding with pressure

219119, 219 7815, B23K 1100, B23K 1130

Patent

active

046098054

ABSTRACT:
A weld nut welding apparatus includes upper and lower electrodes. A weld nut and a plate material which are to be welded together are clamped between the upper and lower electrodes, and a welding current is supplied to the weld nut and the plate material via these electrodes, whereby the weld nut is welded to the plate material. A groove is formed in that surface of the weld nut which abuts against the plate material, while a punch is provided inside the lower electrode, and the punch is moved toward the upper electrode after the welding operation, whereby it is possible for the plate material to be formed with a bore which corresponds to the groove. This bore is punched in the plate material only at a required welding position and at the same time as the welding operation. It is therefore possible to overcome the disadvantage that it would otherwise be necessary for a bore to be previously formed in the plate material. Thus, even if there is a change in the number of weld nuts which are to be secured to the plate material or the nut mounting positions on the plate material, it is possible for bores to be punched in the plate material at appropriate positions thereon, provided that nut welding positions alone are determined.

REFERENCES:
patent: 1925753 (1933-09-01), Fitch et al.
patent: 2265561 (1941-12-01), Hoern
patent: 2623974 (1952-12-01), Prucha
patent: 2731535 (1956-01-01), Grey

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