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YIXUN mold
8480419090
Injection-Molded Components for Helmet Manufacturing: Precision Tooling for Protective Headgear
| Component | Material | Injection Mold & Process Requirements | Key Functions |
|---|---|---|---|
| Helmet Shell | PC (Polycarbonate), ABS, PC/ABS Alloy | - Mold: Mirror-polished (Ra ≤ 0.02μm) cavity; multi-cavity (2–4 cavities) design for mass production - Process: High-pressure injection (800–1200 bar); uniform cooling (mold temp 80–100°C) to prevent warpage - Thickness: 2.5–5mm (motorcycle helmets: 4–5mm) | Primary impact resistance; disperses crash forces; protects internal EPS liner |
| Chin Bar (Full-Face Helmets) | ABS/PC Alloy | - Mold: Integrated snap-fit structures; reinforced ribbed cavities - Process: High-toughness material formulation; post-mold impact testing (≥50J impact resistance) | Protects lower face/jaw; enhances helmet structural rigidity |
| Vent Grilles | PP (Polypropylene), ABS | - Mold: Fine-gate tooling for intricate grid patterns; rounded-edge cavity design - Process: Low-pressure injection (600–800 bar) to preserve delicate structures | Facilitates airflow (reduces heat buildup); blocks debris from entering the helmet |
| Adjustment Knobs & Buckle Bases | Nylon (PA6), ABS | - Mold: High-precision thread/catch-tooth cavities (tolerance ±0.05mm) - Process: Wear-resistant material additives; post-mold tensile testing (≥200N pull strength) | Adjusts helmet fit (head circumference); secures chin straps for stable wear |
| Visor Frames | PC, ABS | - Mold: Precisely sized visor slots (matches visor thickness ±0.1mm) - Process: UV-stabilized material; mold with hinge-integrated cavities | Holds protective visors; enables smooth visor opening/closing |
Ergonomic Cavity Geometry: Helmet shell molds are engineered to match human head curvature (based on 95th-percentile head scans) for optimal fit; symmetric cavity design ensures uniform wall thickness (±0.1mm) to avoid stress concentrations.
Material-Specific Tooling:
For PC (high-melt temp): Molds use hot-runner systems to minimize material waste and ensure consistent melt flow.
For ABS (impact-resistant): Molds incorporate reinforced core structures to handle high injection pressures.
Efficient Cooling Systems: Circumferential cooling channels (spaced 10–15mm apart) maintain uniform mold temperature (±2°C), reducing shrinkage and warpage in large parts like helmet shells.
Demolding Safety: Multi-point ejector systems prevent deformation during part removal; hidden ejector pins preserve the shell’s smooth exterior (critical for aerodynamics and aesthetics).
| Parameter | Range | Purpose |
|---|---|---|
| Melt Temperature | 260–280°C | Ensures PC flows smoothly to fill complex shell cavities (e.g., vent openings) |
| Mold Temperature | 80–100°C | Reduces internal stress in PC; prevents post-mold cracking |
| Injection Pressure | 900–1100 bar | Fills thin-walled sections (e.g., shell edges) without voids |
| Hold Pressure | 50–60% of Injection Pressure | Eliminates surface sink marks; ensures dimensional stability |
| Cooling Time | 30–45s | Fully cures the shell; avoids deformation during demolding |
Deburring & Polishing: Automated grinding removes flash/burrs (prevents skin scratches); PC shells undergo optical polishing to enhance scratch resistance and gloss.
Surface Finishing: Options include spray coating (UV-resistant), hydro-dipping (custom graphics), or pad printing (brand logos); all finishes are tested for adhesion (ASTM D3359) to avoid peeling.
Assembly Prep: Snap-fit structures (e.g., chin bar hinges) are pre-tested for 10,000+ cycles to ensure durability.
Dimensional Inspection: CMM (Coordinate Measuring Machine) verifies shell curvature, vent size, and fitment (tolerance ±0.1mm).
Impact Resistance: Shells undergo drop-testing (2.3kg hammer, 1.5m drop height) to ensure impact forces are dispersed (headform acceleration ≤300g, per CPSC standards).
Material Compliance: All components are tested for biocompatibility (USP Class VI) and non-toxicity (REACH/RoHS) to ensure safe skin contact.
Mass Production Efficiency: Multi-cavity molds enable 10,000+ parts per week, reducing unit costs for high-volume helmet lines.
Consistency: Injection molding ensures every component (e.g., shell, vent grille) matches design specs—critical for uniform helmet fit and safety.
Design Flexibility: Complex structures (e.g., integrated vents, reinforced ribs) are molded in one step, eliminating costly assembly of multiple parts.
Durability: High-performance materials (PC, ABS) and precision molding deliver components that withstand 5+ years of use (or multiple impact events, for safety-critical parts).
Custom cavity geometries (for brand-specific shell shapes).
Material formulation (e.g., lightweight PC/carbon fiber blends for racing helmets).
Regulatory compliance support (testing for ECE, DOT, or GB standards).
Injection-Molded Components for Helmet Manufacturing: Precision Tooling for Protective Headgear
| Component | Material | Injection Mold & Process Requirements | Key Functions |
|---|---|---|---|
| Helmet Shell | PC (Polycarbonate), ABS, PC/ABS Alloy | - Mold: Mirror-polished (Ra ≤ 0.02μm) cavity; multi-cavity (2–4 cavities) design for mass production - Process: High-pressure injection (800–1200 bar); uniform cooling (mold temp 80–100°C) to prevent warpage - Thickness: 2.5–5mm (motorcycle helmets: 4–5mm) | Primary impact resistance; disperses crash forces; protects internal EPS liner |
| Chin Bar (Full-Face Helmets) | ABS/PC Alloy | - Mold: Integrated snap-fit structures; reinforced ribbed cavities - Process: High-toughness material formulation; post-mold impact testing (≥50J impact resistance) | Protects lower face/jaw; enhances helmet structural rigidity |
| Vent Grilles | PP (Polypropylene), ABS | - Mold: Fine-gate tooling for intricate grid patterns; rounded-edge cavity design - Process: Low-pressure injection (600–800 bar) to preserve delicate structures | Facilitates airflow (reduces heat buildup); blocks debris from entering the helmet |
| Adjustment Knobs & Buckle Bases | Nylon (PA6), ABS | - Mold: High-precision thread/catch-tooth cavities (tolerance ±0.05mm) - Process: Wear-resistant material additives; post-mold tensile testing (≥200N pull strength) | Adjusts helmet fit (head circumference); secures chin straps for stable wear |
| Visor Frames | PC, ABS | - Mold: Precisely sized visor slots (matches visor thickness ±0.1mm) - Process: UV-stabilized material; mold with hinge-integrated cavities | Holds protective visors; enables smooth visor opening/closing |
Ergonomic Cavity Geometry: Helmet shell molds are engineered to match human head curvature (based on 95th-percentile head scans) for optimal fit; symmetric cavity design ensures uniform wall thickness (±0.1mm) to avoid stress concentrations.
Material-Specific Tooling:
For PC (high-melt temp): Molds use hot-runner systems to minimize material waste and ensure consistent melt flow.
For ABS (impact-resistant): Molds incorporate reinforced core structures to handle high injection pressures.
Efficient Cooling Systems: Circumferential cooling channels (spaced 10–15mm apart) maintain uniform mold temperature (±2°C), reducing shrinkage and warpage in large parts like helmet shells.
Demolding Safety: Multi-point ejector systems prevent deformation during part removal; hidden ejector pins preserve the shell’s smooth exterior (critical for aerodynamics and aesthetics).
| Parameter | Range | Purpose |
|---|---|---|
| Melt Temperature | 260–280°C | Ensures PC flows smoothly to fill complex shell cavities (e.g., vent openings) |
| Mold Temperature | 80–100°C | Reduces internal stress in PC; prevents post-mold cracking |
| Injection Pressure | 900–1100 bar | Fills thin-walled sections (e.g., shell edges) without voids |
| Hold Pressure | 50–60% of Injection Pressure | Eliminates surface sink marks; ensures dimensional stability |
| Cooling Time | 30–45s | Fully cures the shell; avoids deformation during demolding |
Deburring & Polishing: Automated grinding removes flash/burrs (prevents skin scratches); PC shells undergo optical polishing to enhance scratch resistance and gloss.
Surface Finishing: Options include spray coating (UV-resistant), hydro-dipping (custom graphics), or pad printing (brand logos); all finishes are tested for adhesion (ASTM D3359) to avoid peeling.
Assembly Prep: Snap-fit structures (e.g., chin bar hinges) are pre-tested for 10,000+ cycles to ensure durability.
Dimensional Inspection: CMM (Coordinate Measuring Machine) verifies shell curvature, vent size, and fitment (tolerance ±0.1mm).
Impact Resistance: Shells undergo drop-testing (2.3kg hammer, 1.5m drop height) to ensure impact forces are dispersed (headform acceleration ≤300g, per CPSC standards).
Material Compliance: All components are tested for biocompatibility (USP Class VI) and non-toxicity (REACH/RoHS) to ensure safe skin contact.
Mass Production Efficiency: Multi-cavity molds enable 10,000+ parts per week, reducing unit costs for high-volume helmet lines.
Consistency: Injection molding ensures every component (e.g., shell, vent grille) matches design specs—critical for uniform helmet fit and safety.
Design Flexibility: Complex structures (e.g., integrated vents, reinforced ribs) are molded in one step, eliminating costly assembly of multiple parts.
Durability: High-performance materials (PC, ABS) and precision molding deliver components that withstand 5+ years of use (or multiple impact events, for safety-critical parts).
Custom cavity geometries (for brand-specific shell shapes).
Material formulation (e.g., lightweight PC/carbon fiber blends for racing helmets).
Regulatory compliance support (testing for ECE, DOT, or GB standards).
