PURPOSE: To fill sheath material to groove parts of a twisted cable core sufficiently, achieve a smooth outer appearance, and finish it to be circular securely if a cable size or the sheath material is varied by providing a pressure cooling device at an outlet of a die.
CONSTITUTION: Sheath material 18 heat fused by an extruder B is guided to a crosshead C installed at a forward end of the extruder B, a twisted cable core 17 comprising plural insulation core wires twisted with each other is guided to a nipple assembled in a head C, and the material 18 is moulded in the die. In this case, a pressure cooling device main body A with which it can be cooled under a pressurizing atmosphere is provided at an exit of the die, and the fused resin-coated cable core 17 obtained by moulding in the die is cooled and solidified under pressurization. Its form can thus be fixed while maintaining a smooth condition, so if the size of the cable core 17 or the material 18 is varied, the material 18 can be filled to groove parts of the cable core 17 sufficiently, achieving a smooth apperance and finishing it to be circular.
TANAKA TAKUYA
UCHIDA HIROSHI
