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Cold feeding, low energy consumption extruder with comprehensive after-sales service support.
Product Overview
The core of this cold-feed extruder lies in the direct plasticization of rubber compounds at room temperature. The axial thrust generated by the rotating screw, combined with the shearing action of the pins, transforms the rubber compound from solid to molten state within the barrel.
Three-Dimensional Composite Motion Plasticization
The rubber compound, under the action of the pins in the screw thread grooves, generates a three-dimensional composite motion encompassing transverse, longitudinal, and rotational movements. This effectively disrupts laminar flow and agglomeration, enhancing the kneading effect.
Pin Shearing Design
Radial pins: Helically arranged along the barrel length, with ends close to the screw root diameter surface, disrupting the laminar flow structure
Tangential pins: Distributed in pairs on both sides of the barrel, some employing hollow structure with built-in cooling channels for secondary vortex mixing and temperature control
Key Component Configuration
Screw and barrel: 38CrMoAlA alloy steel with bimetallic nitriding treatment, aspect ratio 12:1 to 22:1
Temperature Control System: Intelligent segmented temperature control with heating/cooling channels for die head, screw, and barrel, maintaining rubber temperature below 120℃
Feeding Device: Feeding roller at rear rotates synchronously with main shaft via linkage gear for uniform rubber strip feeding
Advantages Over Hot-Feed Extruders
Simplified Process and Reduced Costs
Elimination of Hot Refining Steps: No need for two-roll mill hot refining, simplifying production process and saving manpower and equipment investment
Labor Reduction: Labor costs reduced by over 50%
Smaller Footprint: More compact production line layout with less environmental pollution
Production Efficiency and Energy Consumption
Increased Capacity: 50% higher production capacity than hot-feed extruders with larger extrusion volume
Low Overall Energy Consumption: Despite higher single unit power consumption (2-4 times comparable hot-feed), elimination of hot refining reduces overall energy consumption by over 35%
Superior Product Quality
High Density: Die head pressure 2-4 times higher than hot feed extrusion, resulting in stronger pressure stability and more uniform, dense extrudate
Less Prone to Scorching: Short rubber compound thermal history and low discharge temperature reduce premature vulcanization likelihood
Common Models and Applications
Typical Model Parameters
XJW Series: Models from XJW-60 to XJW-250, screw diameters 60mm to 300mm, length-to-diameter ratios 12 to 18
Performance Examples: XJW-90×12D with 90mm screw diameter, 45kw motor power, maximum capacity 260kg/h; XJW-150×16D with 132kw power, capacity up to 900kg/h
XJD Series: Models like XJD-250 with maximum production capacity 2800-3500 kg/h
Technical Specifications
Model
XJW-45
XJW-65
XJW-80
XJW-110
Screw diameter
45
65
80
110
Length-diameter ratio
12:1
12:1
12:1
12:1
Motor power
7.5
11
15
30
Screw speed
10-70
10-70
10-70
10-70
Output kg/h
20-30
40-60
120-150
200-280
Main Application Areas
Tire Manufacturing: Shaping and extrusion of treads, sidewalls, and triangle rubber in radial tires; key equipment in radial tire production
Rubber Products: Shaping and extrusion of cross-sectional products including rubber hoses, rubber sheets, conveyor belt core rubber, and cover rubber
Wires and Sealing: Continuous coating of wires, cables, hoses, and production of irregularly shaped sealing strips
Rubber Supply Process: Replacement for open mill in supplying rubber to steel wire (fiber) cord calenders and radial tire inner liner calenders
