| 摘要 |
Disclosed is a panel lifting unit for a nut welding device. In the nut welding device capable of welding the nut on a panel material positioned by a restriction pin by use of a stationary electrode on an electrode holder and a movable electrode above the stationary electrode, the stationary electrode includes a lifting plate made of a circular disc type plate and provided with a plurality of spring holes penetrating therein along a circumference in a vertical direction, in which a stepped surface is formed at one side of an inner peripheral surface of each spring hole, being inserted in the position restricting pin through a center through-hole, and being placed over the stationary electrode; lifting rods each inserted in the spring hole and having a spring retainer, of which an upper end is fixed to the lifting plate at the outside of the spring hole and a lower end is supported upwardly by the stepped portion in the spring hole, integrally formed; and a lifting spring inserted in the spring hole to apply an upward resilient force to the lifting rod. |
