| 摘要 |
The shortcomings of the prior art are overcome by the disclosed die (100) that impregnates a group of strands (16) and wirecoats the impregnated strands to form a composite cable (30). The shortcomings are also overcome by the disclosed method of manufacturing a composite cable using the die. The die includes a body (105) with a center channel (110) and an outer channel (112). A thermoplastic resin (120) is supplied to the die to impregnate and wirecoat the strands. As the strands are attenuated through the center channel, the strands are impregnates with resin. As the impregnates strands are attenuated through the outer channel, they are wirecoated with more resin. The die includes a bushing (190) through which a composite cable is attenuated. The die includes a wall (118) which separates the center channel and the outer channel. The wall includes ports (114, 116) through which the resin flows from the outer channel to the center channel. The melt pressure in the center channel can be adjusted by varying the size and number of the ports. The melt pressure in the outer channel may be adjusted as well. A gasket (184) is provided between the wall and the body. The thickness of the gasket can be varied to adjust how far the wall is inserted. The die also includes an inlet plate (170) with several apertures (176). The strands pass through the apertures and into the center channel. The inlet plate separates the strands as they enter the die. The spacing between the strands facilitates the impregnation of the strands. The composite cable attenuated from the die is subsequently cooled to harden the resin. The cable is wound on a spool for later use. |
