Automatic pre-tightening type tobacco clamp

The utility model discloses an automatic pre-tightening type tobacco clamp which comprises a supporting rod and an upper clamping rod which are used for mutually clamping tobacco leaves, vertical connecting arms are arranged at the two ends of the supporting rod, a pressing rod is hinged to the connecting arm at one end, and a fastening device for the free end of the pressing rod is arranged on the connecting arm at the other end. A first pre-tightening device is arranged between the upper clamping rod and the pressing rod, and a second pre-tightening device for stably clamping a tobacco stem is arranged between the supporting rod and the upper clamping rod; when tobacco leaves are cured, under the condition that the size of the tobacco leaves is reduced, self-adaptive pre-tightening clamping can still be achieved, and stable clamping of the tobacco leaves is guaranteed. 本实用新型公开了一种自动预紧式烟夹，它包括相互夹紧烟叶用的托杆和上夹紧杆，在托杆的两端设有竖直的连接臂，在一端的连接臂上铰接有压杆，在另一端的连接臂上设有压杆自由端的固紧装置，在上夹紧杆与压杆之间设有第一预紧装置，在托杆和上夹紧杆之间设有稳定夹持烟柄用的第二预紧装置；本实用新型在