| 摘要 |
<p>The invention relates to a pre-cutting mechanism, meant to be used for the horizontal ribbon saws. According to the invention, the mechanism comprises a case (A) provided with an axle (1) and with a bushing (2), whereon there is integrally mounted a handle (6a) and an upper arm (3), and at the other end of the arm (3), in a bushing, there is introduced an axle (5) kinematically linked to a bushing (2), through an upper parallelogram-shaped mechanism, consisting of the arm (3), an upper connecting rod (7) and two handles (6a and 6b), the handle (6b) being integral with the axle (5).</p> |
