| 摘要 |
A machine for producing tubes by winding into a spiral a ribbon-shaped material (N) on a spindle (1), comprises a winding unit (5) which continuously winds into a spiral two or more overlapping and staggered strips of ribbon-shaped material (N) on the said spindle (1) and causes the tube (T) formed from the said material to advance continuously, and a cutting unit (33) fitted with tube (T)-cutting means (63, 65) and provided with a reciprocating motion along the direction of advance of the tube, to cut the said tube into sections of predetermined length during the advance of the tube. The winding unit (5) is driven by a first actuator (19), and the reciprocating motion of the cutting unit (33) is provided by a second actuator (53); the actuators are electronically controlled (90) in such a way that the speed of advance of the cutting unit (33) during the cutting is substantially equal to the speed of advance of the tube produced by the said winding unit (5).
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