APPARATUS FOR THE PRODUCTION OF AN ELECTRIC CONDUCTOR PROVIDED WITH AT LEAST ONE COATING LAYER OF PLASTIC MATERIAL

摘要

Apparatus for the production of an electric conductor provided with at least a layer of coating plastic material. The apparatus comprises: a head for the extrusion of an electric conductor; at least a main extruder having a first supply duct; at least an auxiliary extruder having a second supply duct; and a device for the selection and the diversion of the flows of coating plastic material. The selection and diversion device is provided, in turn, with at least a device for the exclusion of the auxiliary extruder; with a bypass duct between the first duct and the second duct; and with a flow-regulating diverter valve arranged in the intersection point between the first supply duct and a bypass duct connecting the first duct to the second duct.

主权项

1. Apparatus (100) for the production of an electric conductor provided with at least a layer of coating plastic material;
the apparatus (100) comprising:
a head (10) for extruding an electric conductor (EC) and for coating said electric conductor (EC) with at least a layer of plastic material;at least a main extruder (30) to which a first duct (21) for feeding a first plastic material to said extrusion head (10) is associated; andat least an auxiliary extruder (40) to which a second duct (22) for feeding a second plastic material to said extrusion head (10) is associated; between said extruders (30, 40) and said extrusion head (10) being interposed a device (20) for the selection and the diversion of the flows of coating plastic material; and
at least a plastic material exhaust device (24); the apparatus (100) being characterized in that said device (20) for the selection and the diversion of the flows is provided with:
at least a device for the exclusion of said auxiliary extruder (40);at least a communication duct, or bypass duct (23) between said first duct (21) and said second duct (22); andfirst flow-regulating diverter means (VL1) arranged in the intersection point between said first duct (21) and said bypass duct (23).