English
ZHONGYUE MOULD is a professional Chinese injection mold manufacturer supplying Automotive Grille Moulds / Plastic Car Front Radiator Grille Injection Molds (Auto Front Grill Molds) to global Tier-1 auto parts suppliers and OEMs. The front grille is both a brand signature and a functional air intake protector — most are molded in ABS, ASA (UV-stable), or PC/ABS for exterior durability, with chrome-plated upper/outer frame (requiring mirror-polish cavity) and matte/textured black grid (VDI grain cavity). Our grille molds feature multi-slider demolding for honeycomb/grid patterns (5–12+ slides), sequential valve gate (SVG) hot runner to minimize weld lines on visible A-surface, logo insert detailing, and precise clip-boss formation for snap-fit assembly to the front bumper and headlamp.
From luxury brand-style kidney/horizontal-bar grilles, rugged off-road mesh grilles, to lower auxiliary grille inserts, we provide full DFM review and Moldflow simulation before steel cutting.
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Item |
Specification / Options |
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Mold Name |
Automotive Front Radiator Grille / Car Front Grill Plastic Injection Mould |
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Cavity & Core Steel |
Cavity frame: S136 (HRC 48–52) for mirror polish zone + 718H(33–38) or 2738HH for textured grid; Core: 718H / 2738HH; Slides: H13(2344 ESR) nitrided |
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Mold Base |
LKM / DME / HASCO / Self-designed (suitable for 650T–1800T press depending on grille size) |
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Cavities |
Single cavity (1×1) for main grille; 1+1 / 2+2 for lower bumper grille inserts |
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Runner System |
Hot runner — 4–10 drops sequential valve gate (YUDO / SYNVENTIVE / Mold-Master); cold runner optional for proto |
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Gate Type |
Submarine gate on inner flange/back; fan gate; hot drop direct gating |
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Ejection |
Ejector pins + ejector block / stripper bar; robot take-out interface |
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Cooling |
Baffles Ø8–12mm, bubblers, BeCu inserts near thick emblem boss & mounting tabs, multi-circuit |
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Slides / Lifters |
5–12+ angled slides / lifters for grid/honeycomb demolding; mini hydraulic cylinders optional |
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Surface Finish |
S136 zone: SPI A1/A2 mirror polish; 718H/2738 zone: VDI 27–36 matte grain / MT texture; logo engraving insert |
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Mold Life |
≥500,000 shots (718H cavity + H13 slides); ≥800,000–1,000,000 shots (full H13/S136 nitrided) |
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Recommended Molding Material |
ABS (shrinkage ~0.4–0.7%), ASA (UV-stable, shrinkage ~0.5–0.7%), PC+ABS (high-heat), PP+EPDM-T20 (lower insert) |
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Design Software |
UG NX, CATIA, Pro/E, SolidWorks, Moldflow |
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Tolerance Control |
±0.05 mm general; ±0.1 mm on mounting clip pitch; perimeter contour ±0.3 mm to match bumper/headlamp |
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Lead Time |
50–70 days after 3D mold design approval (multi-slider adds complexity) |
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Mould material |
Hardness |
Mould life |
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P20 |
HRC 28-33 |
>300,000 shots |
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718 |
HRC 33-36 |
>500,000 shots |
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H13 |
HRC >43 |
>800,000 shots |
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2344 |
HRC >48 |
>800,000 shots |
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S136 |
HRC 48-52 |
>1,000,000 shots |
Make your next Plastic Automotive Grill Mould project brighten!
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Part Type |
Common Material |
Mold Design Focus |
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Main Front Radiator Grille (Luxury / Passenger Car) |
ABS, ASA (UV-stable), PC+ABS |
Chrome-frame mirror polish(SPI A1/A2)+grid VDI grain; multi-slider for honeycomb; SVG hot runner; emblem recess |
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Mesh / Honeycomb Off-Road Grille (SUV / Pickup) |
Black ABS/ASA with heavy VDI 30–42 grain |
Deep grid — multi-angle slides or collapsible core; robust ejection; hidden sub-gate on back flange |
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Chrome-Plated Grille Surround / Outer Ring Only |
ABS (chrome plated post-molding) |
Ultra-high polish cavity S136(HRC48-52); minimal parting line witness; often family mold with main grille or separate |
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Lower Bumper Grille / Fog Lamp Grille Insert |
PP+EPDM-T20 or ABS black matte |
Simpler geometry; sometimes 1+1 or 2+2 multi-cavity; clip boss cooling emphasis |
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Active Grille Shutter (AGS) Surround / Housing |
PA66+GF or PBT (structural) |
Tight flatness tolerance; sometimes mold for AGS blade + housing分开制作 |
Multi-Slider Grid / Honeycomb Demolding — 5–12+ angled slides or lifters to form horizontal/vertical bars & hexagonal mesh; slide angle & stroke optimized to avoid interference; nitrided H13 or SKD61 slides for wear resistance against thin-bar undercuts.
Sequential Valve Gate (SVG) Hot Runner System — YUDO / SYNVENTIVE / Mold-Master; staged filling pushes weld lines to hidden flange/back face; avoids flow marks on textured or chrome-plated visible surface.
Dual Surface Finish in One Mold — Chrome frame zone: S136 mirror polish (SPI A1/A2); grid zone: VDI 27–36 leather/matte grain (Mold-Tech, YS) etched directly on cavity; changeable logo insert for brand emblem.
Shrinkage Compensation for ABS/ASA — ABS shrinkage ~0.4–0.7%; ASA similar ~0.5–0.7%; Moldflow-verified cavity sizing especially on long bar elements prone to warpage.
Hidden Submarine / Edge Gate on Non-Visible Face — Gate vestige hidden on back flange or inner boss; cold runner option for aftermarket low-volume; hot drop direct gating where applicable.
1+1 Mirror Cavity Option (L+R for Symmetrical Lower/Insert Grilles) — Balanced runner/hot-drop design; main upper grille usually single cavity due to asymmetry/brand-specific design.
Project Kick-off & DFM Review — Analyze grid bar thickness (typically 2.0–3.5mm), draft angle on slide angles, chrome-frame vs grid parting line, gate & ejection feasibility; suggest improvements for weld line & sink mark avoidance.
Mold Flow Simulation (Moldflow) — Fill pattern, weld line position (pushed to hidden flange/back), clamp force, cooling uniformity & predicted warp for long bar elements.
3D Mold Design Approval — Full assembly with cooling layout, SVG hot runner balancing, multi-slider/lifter detail with interference check, texture zone & mirror-polish zone definition.
Precision Machining — High-speed CNC rough/finish, deep-hole drilling for cooling, Sodick/Charmilles EDM for fine grid details & texture engraving; slide way grinding.
T1 Trial & Correction — Run on in-house machine; supply trial video + CMM dimensional report + sample parts for approval.
Final Packaging & Shipment — Fumigation-free case, mold operation manual, spare parts list (extra slide springs, ejector pins), heat treatment & steel certs.
Automotive Exterior Mold Experience — Bumper, fender, grille & trim molds built in-house with large-format 5-axis capable CNC
In-house DFM & Moldflow Report — Identify filling/warp/sink risks & optimize before steel cutting; check gap/flush fit with bumper & headlamp
Multi-Slider & SVG Hot Runner Expertise — Honeycomb grid demolding, branded hot runner (YUDO/SYNVENTIVE/Mold-Master) with tuning support
Strict QC & Transparent Progress — Weekly machining photos, CMM inspection, T1 sample approval before shipment
Export Experience — Molds shipped to Europe, North America, South America, Southeast Asia
1-Year Mold Warranty + Spare Parts Supply (slides, springs, pins)
Q: Can you make both the main upper grille and lower bumper grille inserts — possibly as a family mold?
A: Main asymmetric grilles are usually single cavity. Lower inserts or fog grilles — if similar size/cycle — can be designed as 1+1 or family mold (2+2 cavities). We advise based on your annual volume and press size.
Q: What hot runner do you recommend for grille molds?
A: Sequential valve gate (SVG) hot runner is strongly recommended for ABS/ASA grilles — it lets you control fill sequence to push weld lines to non-visible areas and reduce flow marks, especially important for textured or chrome-plated surfaces.
Q: Can you achieve mirror polish for chrome-plated frame AND matte grain for grid in one mold?
A: Yes. We use S136 polished cavity for chrome frame zone (SPI A1/A2) and 718H/2738HH textured cavity for grid (VDI 27–36 or Mold-Tech pattern), with clear parting line between zones.
Q: What do you need for a quotation?
A: 3D part model (STP/IGS/X_T), target material (ABS / ASA / PC+ABS), annual volume / cavitation preference, your injection machine platen data, surface finish spec (mirror / grain standard / logo requirement).
Send your grille 3D model (STEP/IGS/X_T) and project requirements. ZHONGYUE MOULD will provide a free DFM report + mold flow summary + formal quotation within 24–48 working hours.
Driven by the philosophy:
Zhongyue Mould is a leading company in the plastic injection air conditioner Cover mould industry. Our highly experienced team of engineers and designers have many decades of combined experience in plastic air conditioner Cover mould design and manufacturing. We provide a comprehensive service, specializing in the production of high-quality and high-precision air conditioner Cover moulds. We have also assisted numerous customers in customizing various types of plastic air conditioner Cover moulding lines.
We can also offer comprehensive assistance in the management of your production process. The procurement department will purchase high-quality raw materials, while the technical department will select the appropriate plastic formula. In accordance with the parameters of the plastic air conditioner Cover mould life requirements and market positioning, we will select the most suitable plastic air conditioner Cover parameters, structure, etc. Our extensive production capacity allows us to deliver plastic air conditioner Covers promptly, at competitive prices and with guaranteed quality.
Address
No.38, Kaituo Road Xinqian Street, Huangyan Taizhou City, Zhejiang Province, China
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