Mold Design Engineer

We are looking for an experienced Injection Mold Designer responsible for designing precision plastic injection molds from product/component drawings and 3D models.

The candidate should have strong knowledge of mold design, parting lines, core & cavity design, slides/lifters, ejection systems, cooling systems, hot/cold runners, mold materials and standard mold components.

The ideal candidate should be capable of taking a component from DFM review through complete mold design and manufacturing documentation.

Key Responsibilities

1. Injection Mold Design

• Design complete plastic injection molds based on 2D drawings and 3D component models.
• Develop:
• Core and cavity
• Parting surfaces
• Inserts
• Sliders
• Lifters
• Ejector systems
• Sprue, runner and gate systems
• Cooling circuits
• Mold bases
• Guide and locating systems
• Select appropriate mold construction and standard components.

2. DFM & Mold Feasibility

• Conduct Design for Manufacturing (DFM) reviews.
• Analyze:
• Draft angles
• Wall thickness
• Undercuts
• Parting lines
• Sink marks
• Weld lines
• Ejection feasibility
• Gate location
• Cooling requirements
• Identify potential molding problems before mold manufacturing.

3. CAD Design

• Create detailed 3D mold assemblies and individual component designs.
• Prepare detailed 2D manufacturing drawings with appropriate:
• Dimensions
• Tolerances
• GD&T
• Surface finishes
• Material specifications
• Heat-treatment requirements

4. Mold Manufacturing Support

• Work closely with toolmakers, CNC programmers, EDM operators and machinists.
• Review manufacturability of mold components.
• Resolve design issues during mold manufacturing.
• Make necessary design modifications based on manufacturing feedback.

5. Mold Trials & Corrections

• Support mold trials and analyze molding issues.
• Work with the molding team to identify causes of:
• Flash
• Short shots
• Sink marks
• Warpage
• Ejection problems
• Weld lines
• Dimensional variation
• Incorporate required modifications into mold design.

6. Documentation

• Prepare and maintain:
• Mold assembly drawings
• Part drawings
• BOM
• Mold component drawings
• Revision history
• Mold design standards
• Design checklists

Required Technical Skills

The candidate should have strong knowledge of:

• Plastic injection molding
• Injection mold construction
• Core & cavity design
• Parting line development
• Sliders and lifters
• Ejection systems
• Hot runner and cold runner systems
• Gate selection and placement
• Cooling system design
• Mold steel selection
• Standard mold components
• CNC machining
• EDM
• Wire EDM
• Grinding
• Mold polishing
• Mold assembly and tryoutRole & responsibilities

Preferred candidate profile