| 摘要 |
A device for operating gripping or movement tools provided at least with a movable member (16, 17) movable alternatively between a first and a second position distanced between them by a cursor (18) susceptible to controlled alternative linear movements starting from an electric actuator. The device includes a transmission element (27) of the movement connected to the actuator, one towing slide (26) associated with the cursor (18) and susceptible to alternative movements caused by the actuator by the transmission element, and at least an elastic member (28) positioned preloaded between the towing slide (26) and the cursor (18) parallel both to their movement direction and to the movement direction of at least a mobile member. The cursor and the towing slide can both move rigidly together as long as the preload of the elastic element remains unchanged, both independently one with the other in reply to the variation of the preload of the elastic element deriving from a resistance against the movement of at least the mobile member.
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