| 摘要 |
A method and apparatus for the layer-wise SZ twisting of electrical or optical cables in which, so that, in the manufacture of multi-layer cables, several stranded layers can be applied in one operation, the twisting elements are fed at points within a single stretched accumulator offset in the longitudinal direction and the speeds of rotation of the twisting heads are varied periodically in at least two increasing and decreasing steps with the distances of the twisting heads from each other adjusted, so that adjacent stranded layers have reversal points of the twist direction which are offset relative to each other. For applying a stranded layer, a twisting closer immediately followed by a rotating twisting head is provided at each feeding point.
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