TRAVERSE MOTION USED IN COMBINATION WITH DEVICE FOR WINDING A CONTINUOUS ELONGATE ELEMENT

摘要

The traverse motion of the type including a scroll cam (17) with an endless cam groove (18) consisting of at least one pair of right- and left-hand grooves joined at each end and a strand guide (22) which has a cam follower (21) fitted in the endless cam groove (18) of the scroll cam (17) and is adapted to reciprocate along a straight path in parallel with the axis of the shaft of the scroll cam when the latter is rotated, the lead angle of the endless cam groove is increased adjacent to its ends or adjacent to each returning point of the cam follower (21) so that the guide (22) is increased in velocity adjacent to each returning point.
When the strand guide (22) is increased in the manner described above adjacent to each returning point, the flange-like increased-diameter distortions at the ends of the package can be avoided and high-quality packages with square ends can be produced.