Resistance welding tip assembly

Details Resistance welding tip assembly Resistance welding tip assembly

2005-06-07

2005-06-07

Stoner, Kiley S. (Department: 1725)

Electric heating

Metal heating

For bonding with pressure

C219S117100

Reexamination Certificate

active

06903299

ABSTRACT:
A resistance welding tip assembly having a welding tip support to which a welding tip is secured. A sleeve is constructed of an electrical insulating material, such as ceramic, and the sleeve includes a throughbore along a preset axis. The sleeve is slidably mounted to the welding tip support along the preset axis between an extended position and a retracted position relative to the welding tip support. A compression spring disposed between the welding tip support and the sleeve urges the sleeve towards its extended position. The welding tip extends through the sleeve throughbore and is of the same size and cross-sectional shape as the sleeve. Furthermore, when the sleeve is in its extended position, a free end of the welding tip is recessed within the sleeve throughbore. Conversely, when the sleeve is in its retracted position, the free end of the welding tip is adjacent a free end of the sleeve and accessible for a welding operation. In practice, the sliding movement of the sleeve between its extended and retracted position between sequential welding operations maintains the integrity of the free end of the welding tip by shearing off any flash or mushroom of the welding tip as the sleeve moves from its retracted and to its extended position.

REFERENCES:
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patent: 4623775 (1986-11-01), Lange
patent: 4762976 (1988-08-01), Miller et al.
patent: 4920247 (1990-04-01), Ward et al.
patent: 4947019 (1990-08-01), Akiyama et al.
patent: 6452130 (2002-09-01), Qian et al.
patent: 6762391 (2004-07-01), Wile et al.

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