RVV Sheathed Cable Extrusion Line

RVV Sheathed Cable Extrusion Line

The full name of RVV cable is copper core PVC insulated PVC sheathed flexible cable, also known as lightweight PVC sheathed flexible wire, commonly known as soft sheathed wire, which is a type of sheathed wire. RVV wires and cables are two or more RV wires with an additional layer of sheath. RVV cable is the most commonly used cable in weak current systems, with an indefinite number of core wires, two or more, and a PVC sheath on the outside. There are no special requirements for the arrangement of core wires. The function of the sheath is to protect the inner protective layer of the cable from mechanical damage and chemical corrosion, and to enhance the mechanical strength of the cable. RVV cables are mainly used as power lines, control lines, and signal transmission lines for electrical appliances, instruments, electronic equipment, and automation devices. They can be specifically used in anti-theft alarm systems, building intercom systems, and other applications.

The RVV sheathed cable extrusion line is a complete set of equipment specifically designed for producing copper core PVC insulated PVC sheathed flexible cables (RVV). Through multiple extrusion processes, the insulation and sheath wrapping of multi-core wire groups are achieved, and lightweight multi-core sheathed cables that meet standards are manufactured.

Composition of Production Line

TConductor Processing System
Copper conductor straightening device (± 0.1mm accuracy);
Active pay off rack: Equipped with tension feedback control.
Double Layer Extrusion System
Main extruder: PVC insulation layer extrusion;
Auxiliary extruder: PVC sheath layer extrusion;
Co extrusion die head: Pressure balance design.
Cooling System
Insulation cooling tank (3-stage gradient cooling);
Sheath cooling groove (5-stage spray cooling);
Intelligent control of water temperature (± 1 ℃).
Linkage Control Device
PLC synchronous control system;
Double traction wheel speed matching (error ≤ 0.05%).
Detection System
Dual channel spark tester (independent insulation/sheath testing);
Laser caliper (real-time monitoring of double-layer thickness).

Process Flow

Multi core conductor pay-off → Synchronous insulation extrusion → Pre cooling and shaping → Stranding into cables → Sheath extrusion → Final cooling → Comprehensive testing → Printing → Automatic take-up.

RVV Sheathed Cable Extrusion Line Datasheet

Model	50	60
Pay-off Type	Active or passive	Active or passive
Screw Diameter	φ50 mm	φ60 mm
Screw L/D Ratio	25:1	26:1
Extrusion Amount	70 kg/hr	110 kg/hr
Outlet Wire	φ0.75-4 mm	φ0.8-8 mm
Main Motor	11 KW	18.5 KW
Cooling Device	U type	U type
Storage Rack	Horizontal	Horizontal
Traction Power	4 KW	4 KW
Production Speed	500 m/min (Max.)	450 m/min (Max.)
Take-up Spool	φ400-630 mm	φ400-630 mm
Coiling Method	Automatic	Automatic

RVV Sheathed Cable Extrusion Line Application

The RVV sheathed cable extrusion line is a complete set of equipment specifically designed for producing copper core PVC insulated PVC sheathed flexible cables (RVV). Through multiple extrusion processes, the insulation and sheath wrapping of multi-core wire groups are achieved, and lightweight multi-core sheathed cables that meet standards are manufactured.