Vorrichtung und Verfahren zur Ummantelung von Kabeln und das damit hergestellte Kabel

摘要

#CMT# #/CMT# Device for sheating wires with plastic, comprising a wire guide (2) opening into a central chamber (51) connected to an extruder, a wire exit die (4) and a moving die (12) of smaller cross-section than the wire exit die, comprises an actuator (13) that traverses the central chamber and moves the moving die in the wire advancement direction and has an opening for connecting the central chamber to the inside of the moving die. #CMT# : #/CMT# Independent claims are also included for: (1) sheathing wires using a device as above, where the moving die is located between the central chamber and the wire exit die when the wire speed is low and is moved upstream of the central chamber when the wire speed is high; (2) pneumatic tire comprising a sheathed wire produced as above. #CMT#USE : #/CMT# Device for sheating wires with plastic, especially rubber, especially for use in pneumatic tires. #CMT#ADVANTAGE : #/CMT# The moving die reduces the effective die cross-section when the wire speed is low and increases the effective die cross-section when the wire speed is high, so that it is no longer to increase the pressure in the central chamber during high-speed operation. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a device as above with the moving die in a forward (restricting) position. 2 : Wire guide 4 : Wire exit die 12 : Moving die 13 : Actuator 51 : Central chamber. #CMT#MECHANICAL ENGINEERING : #/CMT# Preferred Device: There can be several moving dies whose cross-section decreases according to their position upstream of the exit die. The dies are circular or oblong in cross-section. The extruder comprises a device for controlling the pressure of material in the central chamber.