Springs are wounded on the periphery of the rotary shaft, and two ends of the springs are respectively fixed on the upper cutter body and the lower cutter body.
所述转轴外周缠绕有弹簧，弹簧两端分别固定在所述上刀具体和下刀具体上。
Springs are wounded on the periphery of the rotary shaft, and two ends of the springs are respectively fixed on the upper cutter body and the lower cutter body.
所述转轴外周缠绕有弹簧，弹簧两端分别固定在所述上刀具体和下刀具体上。
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