Injection Molding
Blower Wheel Mold | 2-Cavity Precision Blade Inserts
Hardened Steel Injection Mould Toolmakers for mass production. 1,000,000 shots of mold life span in European HASCO standard.
Specifications
- Material:
- PA66+30%GF / POM (Abrasive & High-Flow Engineering Polymers)
- Process:
- High-Speed Multi-Gate Injection (Balanced melt distribution)
- Mechanism:
- Segmented Core-Pulling / Threaded Unscrewing for complex blade geometry
- Tolerance:
- +/- 0.02mm (Cavity Concentricity & Alignment Control)
- Surface Finish:
- SPI-B1 / VDI 3400 Ref. 18 (Low aerodynamic resistance finish)
- Mold Steel:
- S136 / 1.2344 (Hardened HRC 48-52 for erosion resistance)
- Quality Control:
- CMM Insert Profiling / Full Coolant Flow-Rate Validation
Product Description:
High-durability 2-cavity injection tool engineered specifically for producing high-RPM centrifugal blower wheels. The mold features highly intricate, segmented cavity inserts machined with extreme precision to ensure uniform blade thickness and flawless aerodynamic profiles. Built with premium hardened tool steel to withstand the abrasive nature of glass-fiber reinforced polymers, this tool incorporates optimized, balanced cooling circuits directly behind the blade areas to minimize cycle times and prevent part distortion, securing the precise dynamic balance required by Tier-1 HVAC systems.
Product Overview
This is a high-performance 2-cavity plastic injection mold specifically engineered for the mass production of centrifugal fan impellers (blower wheels). These components are critical for automotive climate control (HVAC) systems, air purifiers, and industrial ventilation.
At JST Mold, we specialize in the "Thin-Wall & Multi-Blade" challenges of impeller tooling. This mold features a highly symmetrical 2-cavity layout, ensuring that every impeller produced is identical in weight and geometry—a fundamental requirement for achieving the perfect dynamic balancenecessary for high-speed, low-noise operation.
Key Features
- Precision Multi-Blade Tooling: The mold utilizes advanced high-speed CNC and mirror EDM technology to form dozens of identical, aerodynamically curved blades with micron-level accuracy.
- 2-Cavity High-Efficiency Production: Doubling the output per cycle while maintaining extreme dimensional consistency between cavities, significantly reducing manufacturing costs.
- Advanced Hot Runner System: Equipped with a premium hot runner manifold (red components) to ensure balanced plastic flow into the thin-walled blades, preventing short shots and air traps.
- Superior Dynamic Balance Control: Our mold design focuses on perfect symmetry around the central hub, ensuring the molded parts require minimal secondary balancing, extending the life of the fan motors.
- Optimized Cooling Circuitry: Features a sophisticated multi-zone cooling system to manage the heat dissipation of the complex core area, preventing blade warping and shortening cycle times.
Technical Specifications
Item | Details |
Application | Automotive HVAC, Air Purifiers, Blowers, HVAC Systems |
Mold Type | 2-CavityPrecision Centrifugal Fan Mold |
Part Type | Centrifugal Impeller / Squirrel-Cage Blower Wheel |
Tooling Steel | Hardened S136 (Stainless)or 1.2344 (High Durability) |
Runner System | Balanced Hot Runner for even material distribution |
Processing Technology | High-speed 5-axis CNC & Precision Mirror EDM |
Mold Life | 500,000 to 1,000,000+ shots |
Industry Standards | Compliant with Automotive IATF 16949 Standards |
Why Choose JST Mold for Impeller Tooling?
- Engineering for Balance:We perform rigorous Mold Flow and structural analysis to ensure that gates are positioned to maintain the part's rotational balance from the moment it is ejected.
- Complex Geometry Experts:Handling hundreds of thin-wall fins requires exceptional tooling skill. We ensure every blade has a smooth finish to reduce air noise and friction.
- Proven Track Record:We have delivered hundreds of impeller and fan molds to top-tier automotive and appliance manufacturers worldwide.