EXTRUSION HEAD FOR CONTINUOUS COVERING OF SECTOR CONDUCTING CORES WITH PLASTIC INSULATION Russian patent published in 2005 - IPC

FIELD: cable engineering; plastic-covered sector cables.

SUBSTANCE: proposed extrusion head that provides for regulating insulation thickness over perimeter of sector cable cores has body, mandrel holder, mandrel with cylindrical part, die, mandrel evacuation device, and device for positioning conducting core in mandrel; two cuts symmetrical relative to vertical axis of mandrel are made on external surface of its cylindrical part; these cuts are disposed so that fixed radiant position of sector in mandrel is ensured and its rays originate from geometric center of mandrel and cross points limiting left- and right-hand rounding of sector; angle between symmetry axes of cuts is not over 180 deg.; angle of cuts to generating lines of cylinder is minimum 1 deg.

EFFECT: reduced material input of cable.

1 cl, 3 dwg, 1 tbl