Mold Design Engineer

Safey Medical Devices; Chakan; On-site; INR 700,000 - 1,100,000; Full time

Job summary

Safey Medical Devices is seeking an experienced Injection Mold Designer to design precision plastic molds from product drawings and 3D models. The role requires strong knowledge of mold design fundamentals and associated components to ensure manufacturability.

The candidate will drive DFM reviews, develop core and cavity designs, and support mold manufacturing from CAD through trials, ensuring documentation and standards are upheld throughout the project lifecycle.

Qualifications

• 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.

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 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 dimensions, tolerances, GD&T, surface finishes, material specs, heat-treatment requirements.
• 4. Mold Manufacturing Support: Work with toolmakers, CNC programmers, EDM operators and machinists; Review manufacturability; Resolve design issues during mold manufacturing; Make design modifications based on feedback.
• 5. Mold Trials & Corrections: Support mold trials and analyze molding issues; Identify causes of flash, short shots, sink marks, warpage, ejection problems, weld lines, dimensional variation; Incorporate 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.

Skills

Plastic injection molding

Core & cavity design

Parting lines

Slides & lifters

Ejection systems

Cooling systems

Hot/Cold runners

Mold materials

Standard mold components

CNC machining

EDM

Wire EDM

Grinding

Mold polishing

Mold assembly & tryout

Job description

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