Products Description
Fomtec’s Dedicated Injection Molding Machine for Automotive Sunroof Dust Screens across mechanical structure, hydraulic system, and screw/barrel design:
⚙️ I. Mechanical Structure Advantages
High-Rigidity Clamping System
Micro-Clearance Mold Locking Technology: Utilizes direct-pressure or double-toggle mechanisms with clamping force repeatability of ±0.5%, eliminating flash during thin-wall dust screen molding (typically 0.5~1.5mm) while minimizing platen deflection during long-term operation.
Low-Inertia Injection Unit: Optimized inertial mass enables high-speed response (injection speed ≥300mm/s), supporting efficient multi-cavity production for consistent mesh structure formation.
Wear & Dust Resistance Design
Fully Enclosed Guide Pillars + Multi-Seals: Critical moving parts feature stainless steel bushings and dust covers to block external contaminants, extending equipment life and meeting automotive cleanroom standards.
Hardened Platen Surfaces: Nitrided or Teflon-coated platens resist abrasion from glass-fiber-reinforced materials (e.g., PA+GF), reducing maintenance frequency.
⛽ II. Hydraulic System Advantages
Ultra-Precise Power Control
Closed-Loop Servo Proportional Valves: Flow control accuracy ±0.1%, enabling multi-stage injection (5~8 speed/pressure phases) for precise filling of micro-pores without melt fracture or mesh deformation.
Independent Accumulator Assistance: Delivers instant power for high-speed injection, ensuring uniform glass fiber dispersion and enhancing tear resistance.
Energy Efficiency & Temperature Management
Servo Motor-Driven Hydraulic Pump: Oil supply on-demand, saving 40%~70% energy vs. traditional fixed pumps while reducing oil temperature fluctuations.
Dual-Mode Oil Temperature Control: Water + air cooling maintains oil temperature (±1°C) and viscosity stability for consistent precision motion.
🔩 III. Screw & Barrel Design Advantages
Low-Shear Plastication System
Low Compression Ratio Screw (1.4~1.6:1): Shallow flights minimize shear heat, preventing thermal degradation of PA/PP+GF materials to preserve fiber length and mechanical strength.
Barrier-Type Mixing Head: Enhances melt homogeneity, eliminating brittle spots caused by fiber agglomeration and improving weatherability.
Enhanced Wear & Corrosion Resistance
Bimetallic Barrel (Nickel-Alloy Liner): Surface hardness HRC≥60 withstands glass fiber abrasion, tripling service life vs. standard barrels.
Chrome-Plated Screw Surface: Reduces material adhesion for easier cleaning and faster material changeovers.
Precision Temperature Control
6~8 Independent Heating Zones: PID control accuracy ±0.5°C, matching material-specific plastication curves (e.g., PA/PP) to prevent thermal discoloration.
Ceramic Heaters + Air Cooling: 40% faster thermal response for small-batch production flexibility.
✨ IV. Sunroof Dust Screen-Specific Optimizations
Micro-Pore Precision Molding: 0.01mm injection repeatability ensures uniform pore size (typically 0.1~0.3mm), balancing air permeability and dust barrier efficiency.
Automation Integration Interfaces: Pre-installed ports for robots and vision inspection systems enable automated part removal + defect detection (e.g., mesh breakage/deformation), boosting yield to 99.5%.
Weather-Resistant Material Adaptation: Screw materials and temperature logic optimized for high-temp materials (e.g., PA66+GF30%), ensuring dimensional stability from -40°C to 120°C.
💎 Core Value Summary
Fomtec’s dust screen dedicated machine delivers:
✅ Micron-Level Clamping Precision → Zero-flash thin-wall mesh molding
✅ Fiber-Friendly Plastication → Preserves material strength & weatherability
✅ Clean & Efficient Production → Complies with automotive ISO/TS 16949 standards
✅ Flexible Control → Adapts to multi-material/multi-batch switching
Solves core challenges in dust screen production: mesh uniformity, fiber damage, and thermal degradation. Ideal for sunroof systems in SUVs, sedans, and premium vehicles.
