Place of Origin:
Shenzhen China
Brand Name:
ALLWIN MOULD
Certification:
ISO 9001: 2015
OEM Automotive 4-Cavity Symmetrical Injection Mould
1. Basic Mould Information
| Item | Specification |
|---|---|
| Mould Model | 4-Cavity Symmetrical Cold Runner Injection Mould |
| Cavity Layout | 2+2 Left-Right Symmetrical Arrangement |
| Mould Structure | Standard Two-Plate Injection Mould |
| Design Software | UG/NX 3D CAD Mould Design |
| Applicable Injection Machine | 160T ~ 280T Horizontal Molding Machine |
| Mould Service Life | 500,000 – 1,000,000 Shots |
| Mould Base Standard | LKM / HASCO / DME (Optional) |
| Runner System | Balanced Cold Runner (Hot Runner Upgrade Available) |
| Polishing Standard | Pink cavity surface: #2000 sandpaper; All other surfaces: #400 sandpaper |
2. Mould Steel & Hardness Parameters
| Component Name | Material Grade | Hardness (HRC) | Surface Treatment |
|---|---|---|---|
| Cavity & Core Inserts | S136H / 718H | 38–45 | Nitriding + Custom Sandpaper Polishing |
| Mould Base Frame | S50C / 45# Pre-hardened Steel | 28–32 | Precision Milling & Surface Grinding |
| Guide Pillar & Guide Bush | SUJ2 Bearing Steel | 58–62 | Hard Chrome Plating & Precision Grinding |
| Ejector Pin / Sleeve Pin | SKD61 | 48–52 | Vacuum Heat Treatment |
3. Cooling System Specification
| Parameter | Details |
|---|---|
| Cooling Layout | Conformal Surrounding Water Channels for Each Independent Cavity |
| Channel Diameter | φ6mm ~ φ10mm |
| Cooling Medium | Circulating Industrial Cooling Water (20℃ ~ 60℃ Adjustable) |
| Optimization Advantage | Uniform temperature distribution, reduce cycle time by 15%–20%, eliminate sink marks & warpage |
4. Ejection System Configuration
1. Full ejector assembly structure: Straight ejector pins + sleeve ejectors + return pins
2. Four-corner balanced ejection design to avoid deformation of thin-walled plastic parts
3. Built-in ejection limit switch for safety protection against over-travel
4. Ejector plate parallelism tolerance ≤0.01mm
5. Precision & Quality Tolerance Standard
| Inspection Item | Allowable Tolerance |
|---|---|
| Overall Product Dimension | ±0.01mm |
| Cavity Positioning Hole & Boss Tolerance | ±0.008mm |
| Cavity Surface Roughness | Pink area Ra ≤0.05μm (#2000 polish); Common area Ra ≤0.8μm (#400 polish) |
| Mould Base Flatness & Parallelism | ≤0.01mm |
| Cavity-to-Cavity Consistency Deviation | ≤0.005mm |
6. Core Design Advantages
Symmetrical 2+2 cavity layout with balanced cold runner, consistent melt filling for all 4 parts, no dimensional difference between cavities
Complete transparent 3D assembly design, fully display cooling circuit, ejection system and positioning structure for customer review
Graded polishing standard to distinguish appearance and non-appearance surfaces, meet OEM high surface finish requirements
Pre-mold flow simulation to predict weld lines, air traps, shrinkage and warpage before machining
High-rigidity standard mould base, effectively resist injection pressure deformation for long-term mass production
7. Production Lead Time Schedule
| Process Stage | Working Days |
|---|---|
| DFM Analysis + 3D Full Mould Design | 6–9 Days |
| CNC Milling / Wire EDM / Sinker EDM Machining | 16–26 Days |
| Grinding & Graded Polishing Process | 4–7 Days |
| Mould Assembly & Fitting | 3–5 Days |
| Mould Trial & Dimensional Validation | 3–6 Days |
| Total Standard Lead Time | 26–38 Days |
8. Packaging & Shipment Specification
| Packaging Layer | Content |
|---|---|
| Inner Protection | Anti-rust oil + PE anti-rust film + EPE foam cushion |
| Outer Export Package | Plywood fumigated wooden case / Steel pallet |
| Customization | Custom shipping mark, customer logo printing available |
| Transport Mode | Sea freight / Air freight (Negotiable per client demand) |
9. Full One-Stop Service Scope
Pre-sales: DFM manufacturability report, free 3D mould design, detailed quotation
Design stage: Output complete 3D assembly files, 2D engineering drawings, BOM list, polishing process sheet
Production stage: Weekly machining progress photos & inspection reports
Mould trial service: Free sample delivery, full CMM dimensional inspection report
Post-production support: Mass injection molding, secondary surface processing, component assembly
After-sales: Lifetime technical guidance, spare parts supply, overseas maintenance support
10. Disclaimer
All technical indicators above are standard parameters; all structure, steel grade and polishing standards can be customized according to customer 2D/3D product drawings.
Final product quality and dimensional accuracy shall be subject to formal mould trial samples.
ALLWIN PRECISION MOULD reserves the right to update technical specifications without prior written notice.
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