Brackets and mounts
Injection Mold – 28 mm Bottle Cap
- Bounding box
- 220.0 × 220.0 × 198.0 mm
- Engine
- Precision B-rep
- Parameters
- 35
- Published
- November 2, 2026
Download
Free to download and use. See the terms.
The prompt
Design a complete injection mold for a 28 mm plastic bottle cap. Part Specifications: - Part: Plastic bottle cap - Outer Diameter: 28 mm - Height: 18 mm - Wall Thickness: 1.5 mm - Material: Polypropylene (PP) - Shrinkage: 1.6% - Production Volume: High volume Mold Requirements: - Two-plate injection mold. - Single cavity. - Core and cavity inserts. - Apply shrinkage compensation to the cavity dimensions. - Parting line at the widest diameter of the cap. - Draft angle: - Outside surfaces: 2° - Internal threads: 3° - Rounded internal corners with 0.5 mm fillets. Runner System: - Cold runner. - Sprue diameter: 6 mm. - Main runner diameter: 5 mm. - Pin gate diameter: 1.2 mm. Ejection System: - Six ejector pins evenly distributed. - Ejector pin diameter: 4 mm. - Ejector stroke: 25 mm. - Include ejector plate. Cooling System: - Cooling channels 8 mm diameter. - Maintain at least 12 mm distance from cavity surfaces. - Separate cooling circuits for core and cavity. Mold Base: - Standard mold base. - Overall mold size approximately 220 × 220 × 180 mm. - Include guide pillars, guide bushes, locating ring, sprue bush, support pillars, return pins, and clamping slots. Output Requirements: - Generate a complete 3D assembly including mold base, cavity plate, core plate, ejector system, cooling channels, sprue, runners, gate, guide pillars, guide bushes, and fasteners. - Ensure all components are properly aligned and manufacturable. - Maintain realistic engineering dimensions and assembly relationships.
Parameters
| Name | Value | Range |
|---|---|---|
| Plate Width | 220 mm | 180 – 300 |
| Plate Depth | 220 mm | 180 – 300 |
| Bottom Clamping Plate Thickness | 20 mm | 15 – 30 |
| Support Plate Thickness | 15 mm | 10 – 25 |
| Core Plate Thickness | 45 mm | 35 – 60 |
| Cavity Plate Thickness | 35 mm | 25 – 50 |
| Top Clamping Plate Thickness | 15 mm | 10 – 25 |
| Spacer Block Height | 50 mm | 40 – 70 |
| Spacer Block Width (X) | 40 mm | 30 – 60 |
| Cavity Insert OD | 40 mm | 30 – 60 |
| Cavity Insert Height | 20 mm | 15 – 30 |
| Compensated Cavity ID | 28.45 mm | 28 – 29 |
| Cavity Depth | 18 mm | 15 – 25 |
| External Draft Angle | 2 deg | 0.5 – 5 |
| Core Insert OD | 40 mm | 30 – 60 |
| Core Insert Height | 30 mm | 20 – 45 |
| Compensated Core OD | 25.45 mm | 25 – 26 |
| Internal Draft Angle | 3 deg | 0.5 – 5 |
| Internal Fillet Radius | 0.5 mm | 0.2 – 1.5 |
| Sprue Top Diameter | 15 mm | 12 – 20 |
| Sprue Length | 35 mm | 25 – 50 |
| Main Runner Diameter | 5 mm | 3 – 8 |
| Pin Gate Diameter | 1.2 mm | 0.8 – 2.5 |
| Runner Length | 30 mm | 20 – 50 |
| Ejector Pin Diameter | 4 mm | 3 – 6 |
| Number of Ejector Pins | 6 | 4 – 12 |
| Ejector Pin PCD | 60 mm | 45 – 80 |
| Return Pin Diameter | 10 mm | 6 – 15 |
| Cooling Channel Diameter | 8 mm | 4 – 12 |
| Guide Pillar Diameter | 20 mm | 15 – 30 |
| Guide Pillar Length (above core) | 40 mm | 25 – 60 |
| Guide Bush OD | 22 mm | 18 – 28 |
| Guide Bush ID | 20 mm | 15 – 25 |
| Guide Bush Length | 25 mm | 15 – 40 |
| Guide Pillar Offset from Center | 95 mm | 80 – 105 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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