| 摘要 |
The invention relates to a film-stretching machine comprising two tracks, each one having a first rail (1) whereon clamps (3) move, said clamps closing at a set point of the pitch thereof, and a second rail (2) whereon carriages (5) move, said carriages being articulated, in a chain driven by a driving toothed wheel (6), in relation to two consecutive clamps, characterised by a wheel for indexing the set point of the pitch of the clamps. |
