| 摘要 |
A system to synchronize the withdrawing and feeding motions of a flexible ribbon (1), including a synchronizing chamber (6) through which is running the flexible ribbon, that presents a curvilinear part with the concavity pointing upwards (10, 11) by means of the suction of a device (4) applied at the bottom of the synchronizing chamber (6). A proximity sensor (4) detects the position of the curvilinear part (10, 11) and controls the synchronizing of the withdrawal and feeding motions, continuous or intermittent, of the running flexible ribbon.
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