| 摘要 |
<p>The machine comprises: a conveyor system (1) for continuous supply of a tube (10) at a constant velocity and in a longitudinal direction of the tube (10); a cutting slide (2) which bears a shearing devices (3) predisposed to section the tube (10) transversally and in successive tracts thereof; means for activating (4) which impose a linear alternating motion on the cutting slide (2) without stopping, between an initial position and a final position along a parallel direction with respect to the longitudinal direction of transport of the tube (10). The motion comprises an outward run, from the initial position to the final position, at least a tract of which occurs in synchrony with an advancement of the tube (10) and during which the tube (10) is sectioned, and a return run, following which the cutting slide (2) is brought back into the initial position. Both the outward run and the return run comprise an acceleration tract, a constant velocity tract and a deceleration tract. The means for activating (4) impose on the cutting slide (2) an alternating linear motion with no stops following a law of motion in which acceleration is a derivable function. <IMAGE></p> |
