Plastic Injection Mould Designer Required – 24/32 Cavity HDPE Mould – Complete Manufacturing Drawings

We are looking for an experienced Plastic Injection Mould Designer to develop a complete production-ready mould design for two small HDPE plastic components.

Component details:

* Material: HDPE
* Approx. component weight: 1.8 grams each
* Two components with a tight mating/assembly fit
* Physical samples will be provided to the selected designer by courier.
* Required mould: 24 or 32 cavities, depending on final mould size, plate dimensions, machine compatibility and economical manufacturing.
* Final cavity count will be decided after proper mould design study.

Important requirement

This is NOT only a 3D CAD modelling job.

We need a complete manufacturing-ready injection mould design so that we can purchase the raw mould materials and give individual machining jobs to local CNC, milling, EDM, drilling, grinding and lathe suppliers, and finally assemble the complete mould ourselves.

Designer must provide

1. Accurate reverse-engineering of both physical components
2. 3D CAD models of both components
3. Proper mating/assembly fit between the two components
4. Complete 24/32-cavity mould layout
5. Core and cavity design
6. Parting-line design
7. Runner and gate system
8. Balanced filling system for all cavities
9. Proper HDPE shrinkage allowance
10. Cooling-water channel design for uniform cooling and minimum shrinkage/warpage
11. Complete ejection system
12. Guide pillar/bush arrangement
13. Complete mould plate design
14. Detailed 2D manufacturing drawings for every plate and component
15. Exact dimensions and tolerances
16. Material specifications for plates, inserts and mould components
17. Complete BOM
18. Standard component specifications
19. CNC/milling/EDM/drilling/lathe job-work drawings
20. Complete mould assembly drawing
21. Exploded assembly drawing
22. Final mould dimensions and estimated mould weight
23. Recommended injection-moulding machine specifications
24. Complete manufacturing sequence/notes where required

Cost optimisation

The mould should be designed for economical manufacturing.

Please use standard mould components wherever practical and avoid unnecessarily complicated mechanisms.

We will manufacture/arrange machining locally, so the drawings must be clear enough for individual job-work suppliers to manufacture each part accurately and assemble the complete mould without guesswork.

Cooling requirement

Cooling is very important because the components are very small and made from HDPE. The cooling system must be properly balanced across the cavities to achieve consistent cycle time and minimise shrinkage, warpage and dimensional variation.

Before starting the complete mould

After receiving the physical samples, the designer must first reverse-engineer and provide the 3D CAD models of both components for our approval.

Only after we approve the component geometry should the designer proceed with the complete mould design.

Experience required

Please apply only if you have actual plastic injection mould design/manufacturing experience, particularly with:

* HDPE/PP
* Multi-cavity moulds
* 24/32 cavity moulds
* Core/cavity design
* Cooling design
* Runner/gate balancing
* Ejection systems
* Production moulds
* Manufacturing drawings

Please send examples/photos of previous multi-cavity injection moulds you have designed and manufactured.

We are looking for a practical mould designer who understands actual tool-room manufacturing, not someone who only creates attractive 3D models.

Physical samples will be couriered to the selected freelancer after finalising the designer, scope, price and confidentiality.