Optical Frame Injection Moulding Machine

1. Ultra-Precise Injection Velocity and Pressure Profile
Achieving defect-free thin-wall frame sections requires high-response injection dynamics and exact switching points.

Multi-Stage Injection Control: Up to 10-stage injection speed and pressure profiling prevents stress marks near the gate and short shots in thin frame edges.

High Repeatability: Injection position control accuracy within ±0.01 mm ensures consistent shot-to-shot weight, reducing frame dimensional variance.

Low-Stress Moulding: Precise back-pressure and screw speed control protect sensitive polymers (such as TR90 or PC) from thermal degradation and shear degradation during plasticizing.

2. High-Rigidity Clamping System for Zero-Flash Parting Lines
Flash along parting lines leads to high manual deflashing and polishing costs. ARLEX clamping systems feature engineered platen rigidity to distribute clamping forces evenly across the entire mould surface.

Optimized Platen Stiffness: Minimizes platen deflection under high injection pressures, preventing micro-gaps at the parting line.

Low-Pressure Mould Protection: Ultra-sensitive mould protection guards complex inserts, sliders, and fine core pins against damage during closing.

Balanced Tie-Bar Loading: Ensures uniform clamping stress across multi-cavity eyewear moulds.

3. Material-Specific Screw and Barrel Assemblies
Eyewear engineering plastics react differently to heat, shear, and moisture. ARLEX offers specialized screw geometries engineered for specific optical resins:

Polycarbonate (PC): Specialized low-shear, wear-resistant screw geometry prevents yellowing, black spots, and optical distortions.

Polyamide / Nylon (PA12, PA66): Optimized compression ratio ensures homogeneous melting without thermal degradation. (Note: Proper resin drying down to moisture levels under 0.05% is required before processing).

TR90 (Memory Plastics): Precision thermal management prevents material degradation while maintaining flexibility and impact strength.

PMMA / ABS / Engineering Blends: Custom barrier or mixing screw designs to ensure uniform color dispersion.

4. Multi-Zone Precision Barrel Temperature Control
Surface aesthetics require strict melt-temperature consistency. ARLEX machines feature independent PID multi-zone temperature modules with an accuracy of ±1°C along the barrel, preventing localized overheating and resin degradation.

5. High-Efficiency Servo-Hydraulic Drive System
Equipped with premium servo motors and internal gear pumps (Sumitomo/Eckerle), the ARLEX drive system delivers power on demand.

Energy Savings: Reduces energy consumption by 30% to 60% compared to traditional fixed-displacement pump systems, depending on the cycle time and cooling parameters.

Proportional Hydraulic Response: Ensures smooth, vibration-free movements during mould opening, ejection, and core pulling.