| 摘要 |
<p>The machine includes at least one jaw (5) arranged for a generally orbital movement about a respective axis (X2). The jaw (5) has associated guide means (70,71) guiding it along at least one rectilinear portion (7a) of the said orbital path, orientated in a generally chordal direction with respect to the said axis (X2), where the jaw (5) cooperates with at least one engagement element (A) in an overall pressure-transmission relationship operable to exert corresponding reaction forces on the jaw (5) itself. At least one collar formation (10) is provided, with a respective outer sleeve (10b) extending about the said axis (X2). At least one assembly (11) is associated with the jaw (5), which extends away from the said engagement element (A) and is able to cooperate to transmit thrust to the said outer sleeve (10b) when the jaw (5) passes along the said rectilinear portion (7a) of its path. The reaction forces are mainly transmitted to the collar formation (10), by means of the said assembly (11), while the said guide means (70, 71) are substantially unaffected by reaction forces. <IMAGE></p> |
