ENG08021 2016 Injection Mould Design

General Details

Full Title
Injection Mould Design
Transcript Title
Injection Mould Design
70 %
Subject Area
ENG - Engineering
MENG - Mech. and Electronic Eng.
08 - NFQ Level 8
10 - 10 Credits
Start Term
2016 - Full Academic Year 2016-17
End Term
9999 - The End of Time
Sean Dalton
Programme Membership
SG_EPREC_K08 201900 Bachelor of Engineering (Honours) in Precision Engineering & Design SG_EPOLY_K08 201900 Bachelor of Engineering (Honours) in Polymer Processing SG_EPOLP_K08 202200 Bachelor of Engineering (Honours) in Polymer Process Engineering

The main purpose of this module is the give student the experience of designing and injection moulding tool similar base on real part requirements and constraints. The student will learn about latest trends in injection moulding and learn about the tool available to produce good quality part parts.

Learning Outcomes

On completion of this module the learner will/should be able to;


Design low cavity moulds for complex parts


Design multi-cavity moulds for high volume parts


Apply plastic flow analysis to the mould design process


Understand the documentation requirements for various sectors: Medical, etc.


Complete a mould design project including all relevant documentation


Present and defend design solution to an audience of peers

Teaching and Learning Strategies

2 hour Lecture

6 hours practical

Module Assessment Strategies

100% continuous assessment

Repeat Assessments


Indicative Syllabus

Advanced mould design: Design of low cavity moulds for complex parts including, two plate and three plate moulds, angle pin actuated slide, spring loaded slides, unscrewing/core pulling, collapsible cores, two shot moulding. Over-moulding metal inserts. Calculations associated with clamping, ejection and cooling time etc.

Multi-cavity mould design: Design of high cavity low complexity moulds, runner balancing, Hot runner moulds.

Part design for moulding: Design considerations in relation to standard features ribs, bosses, etc. Snap fit design. Design consideration for 2 shot moulding and other specialist moulding techniques.

Measurement and inspection: Defining inspection requirements, metrology principle, fixturing for inspection.

Optimising part design using Plastic flow analysis: Analysis of part design using plastic flow analysis. Understanding plastic flow, viscoelastic behaviour, shear stress, effect of moulding conditions, flow restrictors and flow leaders.

Standards and documentation: Awareness of relevant standards/ISO, FDA requirements etc. Validation.

Mould design project: For the mould design project the student will design a finished mould for a complex part and produce full documentation for the relevant sector. Generate electrodes of specific details. Plastic flow analysis will be used to ensure correct moulding parameters; runner and gate details are specified.

The student will document the decisions made in a report on the final design.

They will also present and defend design to a panel of peers.

Coursework & Assessment Breakdown

Coursework & Continuous Assessment
100 %

Coursework Assessment

Title Type Form Percent Week Learning Outcomes Assessed
1 Mould Design project Project Individual Project 50 % OnGoing 5,6
2 Injection Moulding theory Continuous Assessment Assessment 50 % End of Semester 1,2,3,4

Full Time Mode Workload

Type Location Description Hours Frequency Avg Workload
Lecture Not Specified Lectures 2 Weekly 2.00
Laboratory Practical Computer Laboratory Computer Aided Design 2 Weekly 2.00
Laboratory Practical Computer Laboratory Mould Design Project 4 Weekly 4.00
Total Full Time Average Weekly Learner Contact Time 8.00 Hours

Module Resources

Non ISBN Literary Resources

Moldflow Design Guide, A resource for plastics engineerings, 1st Edition 2006

Pye, R.G.W. Injection Mould Design

URL Resources


Other Resources


Additional Information