Opening and closing cutter mechanism of rotating shaft

The utility model relates to a manual cutter mechanism, in particular to an opening and closing cutter mechanism of a rotating shaft, which comprises a cutter handle A and a cutter handle B, wherein a cutter head is hinged between the cutter handle A and the cutter handle B through an opening and closing shaft; the top end of the cutter handle A is provided with a through hole for the opening and closing shaft to pass through, and the top end of the cutter handle B is provided with a groove for the opening and closing shaft to abut; a spring is arranged between the opening and closing shaft and the groove; an opening position locking slot and a closing position locking slot are arranged in the cutter head; and the opening position locking slot and the closing position locking slot are matched with an opening position locking lug and a closing position locking lug on the opening and closing shaft. Compared with the prior art, the opening and closing cutter mechanism of the rotating shaft has the advantages of