| 摘要 |
APPARATUS FOR THE INTERMITTENT SUPPLY OF A SEMI-FINISHED MATERIAL The invention relates to an advancing apparatus for the intermittent supply of a semi-finished material (22) in the form of a band or a wire to a press. The apparatus comprises a pair of displacement grippers (4, 7) which run forward and backwards and by which the material is advanced in an advancing phase, a stationary pair of clamping grippers (24, 27) by which the material (22) is held in a fixed manner in a non- advancing phase, and a control rocker (12) with a control drive (40, 42) which is coupled to one control end of the latter and to which the pair of displacement grippers and the pair of clamping grippers are coupled mechanically and their interaction is controlled. In the event of fracture of control rocker (12) between the displacement grippers (4, 7) and the control drive (40, 42) all grippers are spring-loaded to close. |
