The SJN-50 High-Speed Extruder for Power/Control Cables is specifically designed for high-speed extrusion coating of building wires, automotive electronic wires, and premium home decoration cables, featuring high efficiency, low energy consumption, and superior quality.
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The SJN-50 High-Speed Extruder for Auto Wires is a specialized extrusion system designed to meet the rigorous demands of automotive wire insulation and sheathing. Equipped with a φ50 mm single-screw extruder (L/D ratio 25:1) featuring a grooved feed section, this line delivers homogeneous melt blending (viscosity variation ≤3%) and consistent output (80-200 kg/h) for thermoplastic materials. Its closed-loop temperature control (±1.0°C precision) ensures stable processing of PVC, PE, LSZH, and nylon, while the servo-driven haul-off system (up to 300 m/min) minimizes material waste by 15% through precise speed synchronization. Ideal for automotive harnesses, EV charging cables, and sensor wires, the system supports 0.2-4.0 mm wire diameters with tool-less die changes (≤10 minutes) for quick product transitions.
Extruder Configuration: φ50 mm single-screw with barrier-type design, featuring 3 heating zones (feed, compression, metering) and nitride-treated barrel (surface hardness ≥800 HV).
Material Compatibility: Processes PVC 70/90 (UL 105°C rated), LDPE (density 0.91-0.925 g/cm³), LSZH compounds (halogen content <0.5%), and nylon 12 (melting point 178°C).
Temperature Control: PID-regulated ceramic heaters with infrared temperature sensors (±0.5°C accuracy) for melt temperature monitoring (180-250°C).
Die System: Coaxial single-layer extrusion die with precision ground mandrel (±0.01 mm tolerance), featuring adjustable concentricity via micrometer screws (±0.02 mm range).
Cooling System: Dual-stage water bath (5-25°C) with turbulent flow design and air knife drying (air pressure 0.3-0.6 MPa) to reduce jacket temperature from 250°C to ≤50°C in 30 seconds.
Tension Control: Servo-driven capstan with load cell feedback (±1% accuracy), supporting tension settings from 2-50 N for delicate sensor wires and 50-200 N for power cables.
PLC+HMI Interface: 7-inch color touchscreen with real-time trending of die pressure (0-20 MPa), line speed, and insulation thickness (via ultrasonic gauge, ±0.02 mm accuracy).
Energy Efficiency: Equipped with IE4 premium efficiency motors and regenerative drives that recover 15% of braking energy, reducing power consumption to 0.45 kWh/kg.
Automotive Wiring Harnesses
Produces PVC-insulated wires for engine compartments, meeting LV 216 (Volkswagen) and USCAR-2 (GM/Ford) standards for oil resistance (1000-hour immersion test).
EV Charging Cables
Processes LSZH-insulated high-voltage cables (400V/800V) for EV chargers, complying with IEC 62196-3 and UL 62 for flame retardancy (VW-1 rating).
Automotive Sensor Wires
Manufactures nylon-jacketed wires for ADAS sensors (e.g., radar, LiDAR), with bending endurance ≥10 million cycles (ASTM D2176) and temperature range -40°C to 125°C.
Industrial Machinery Wires
Creates PE-insulated wires for factory robots, resisting lubricants and coolants per ASTM D543 (weight loss ≤5% after 30-day immersion).
Q: What is the maximum insulation thickness achievable?
A: It can produce insulation layers from 0.1 mm (micro-sensors) up to 1.5 mm (power cables), with thickness uniformity ±3% of nominal value.
Q: How does the system ensure consistent concentricity?
A: The die features laser alignment system that continuously monitors insulation eccentricity, with automatic adjustments via servo motors if deviation exceeds ±0.02 mm.
Q: Is it compatible with recycled materials?
A: Yes, it handles up to 20% recycled PVC/PE content when equipped with the optional high-shear mixing section and dual-screen changer (40/80 mesh).
| Technical Specifications | Parameters |
| Designed speed (maximum) | 400m/min |
| Equipment center Height | 1000mm |
| Payoff bobbin specification | PN500~PN630 |
| Takeup bobbin specification | PN500~PN630 |
| Screw Diameter | Ф50mm |
| L/D ratio | 25:1 |
| Maximum screw rotation speed | 105r/min |
| Motor power | 15kW |
| Maximum output | 70kg/h 5%(SPVC);; 20~50 kg/h (LSZH, normal C grade |
| Horizontal accumulator amount | 200m (with 300mm accumulator wheel) |
| Voltage Rating | 3-phase 5-wire, ~380V/50Hz |
The SJN-50 High-Speed Extruder for Auto Wires is a specialized extrusion system designed to meet the rigorous demands of automotive wire insulation and sheathing. Equipped with a φ50 mm single-screw extruder (L/D ratio 25:1) featuring a grooved feed section, this line delivers homogeneous melt blending (viscosity variation ≤3%) and consistent output (80-200 kg/h) for thermoplastic materials. Its closed-loop temperature control (±1.0°C precision) ensures stable processing of PVC, PE, LSZH, and nylon, while the servo-driven haul-off system (up to 300 m/min) minimizes material waste by 15% through precise speed synchronization. Ideal for automotive harnesses, EV charging cables, and sensor wires, the system supports 0.2-4.0 mm wire diameters with tool-less die changes (≤10 minutes) for quick product transitions.
Extruder Configuration: φ50 mm single-screw with barrier-type design, featuring 3 heating zones (feed, compression, metering) and nitride-treated barrel (surface hardness ≥800 HV).
Material Compatibility: Processes PVC 70/90 (UL 105°C rated), LDPE (density 0.91-0.925 g/cm³), LSZH compounds (halogen content <0.5%), and nylon 12 (melting point 178°C).
Temperature Control: PID-regulated ceramic heaters with infrared temperature sensors (±0.5°C accuracy) for melt temperature monitoring (180-250°C).
Die System: Coaxial single-layer extrusion die with precision ground mandrel (±0.01 mm tolerance), featuring adjustable concentricity via micrometer screws (±0.02 mm range).
Cooling System: Dual-stage water bath (5-25°C) with turbulent flow design and air knife drying (air pressure 0.3-0.6 MPa) to reduce jacket temperature from 250°C to ≤50°C in 30 seconds.
Tension Control: Servo-driven capstan with load cell feedback (±1% accuracy), supporting tension settings from 2-50 N for delicate sensor wires and 50-200 N for power cables.
PLC+HMI Interface: 7-inch color touchscreen with real-time trending of die pressure (0-20 MPa), line speed, and insulation thickness (via ultrasonic gauge, ±0.02 mm accuracy).
Energy Efficiency: Equipped with IE4 premium efficiency motors and regenerative drives that recover 15% of braking energy, reducing power consumption to 0.45 kWh/kg.
Automotive Wiring Harnesses
Produces PVC-insulated wires for engine compartments, meeting LV 216 (Volkswagen) and USCAR-2 (GM/Ford) standards for oil resistance (1000-hour immersion test).
EV Charging Cables
Processes LSZH-insulated high-voltage cables (400V/800V) for EV chargers, complying with IEC 62196-3 and UL 62 for flame retardancy (VW-1 rating).
Automotive Sensor Wires
Manufactures nylon-jacketed wires for ADAS sensors (e.g., radar, LiDAR), with bending endurance ≥10 million cycles (ASTM D2176) and temperature range -40°C to 125°C.
Industrial Machinery Wires
Creates PE-insulated wires for factory robots, resisting lubricants and coolants per ASTM D543 (weight loss ≤5% after 30-day immersion).
Q: What is the maximum insulation thickness achievable?
A: It can produce insulation layers from 0.1 mm (micro-sensors) up to 1.5 mm (power cables), with thickness uniformity ±3% of nominal value.
Q: How does the system ensure consistent concentricity?
A: The die features laser alignment system that continuously monitors insulation eccentricity, with automatic adjustments via servo motors if deviation exceeds ±0.02 mm.
Q: Is it compatible with recycled materials?
A: Yes, it handles up to 20% recycled PVC/PE content when equipped with the optional high-shear mixing section and dual-screen changer (40/80 mesh).
| Technical Specifications | Parameters |
| Designed speed (maximum) | 400m/min |
| Equipment center Height | 1000mm |
| Payoff bobbin specification | PN500~PN630 |
| Takeup bobbin specification | PN500~PN630 |
| Screw Diameter | Ф50mm |
| L/D ratio | 25:1 |
| Maximum screw rotation speed | 105r/min |
| Motor power | 15kW |
| Maximum output | 70kg/h 5%(SPVC);; 20~50 kg/h (LSZH, normal C grade |
| Horizontal accumulator amount | 200m (with 300mm accumulator wheel) |
| Voltage Rating | 3-phase 5-wire, ~380V/50Hz |
