| 摘要 |
A device for clamping overlapped edges of metal sheets to be joined by laser welding; the clamping device comprises a box-shaped head, a clamping arm pivotally connected to one end of the head, in order to rotate between an open condition, a closed condition in which the overlapped edges of the metal sheets are pressed against each other, and an intermediate condition in which the overlapped edges of the metal sheets are made to be slightly spaced apart for laser welding; the clamping arm is operatively connected to an electric control actuator by a toggle mechanism and intermediate transmission members; the clamping device also comprises counteracting biasing means to rearwardly urging the clamping arm for compensation of clearances existing in the operative connection between the clamping arm and the electric control actuator.
|
