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Plastic Injection Mold Design Basics

 

Get a practical and comprehensive look at injection mold design and learn to contribute to the overall success of projects. Receive a unique blend of very detailed mold design concepts set forth in the context of the whole design process, and on the final day, participate in that process.

Who Should Attend

Anyone responsible for procuring, evaluating, building or designing injection mold tools, including tooling engineers, buyers, toolmakers, mold designers, product designers, managers and molders.

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Benefits and Learning Outcomes

  • Understand mold design concepts
  • Avoid costly mistakes
  • Specify and evaluate your purchases of molds

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Course Outline/Topics

Introduction and Overview

The Anatomy of a Mold

Mold Types

  • Stripper plate molds
  • Unscrewing molds
  • Quick change molds
  • Hot runner molds
  • Shuttle molds

Basic Mold Construction

  • Use and placement of bolts and dowels
  • Major suppliers and differences between them
  • How to specify and order mold bases and components

Common Components and their Function

  • Leader pins, return pins, support pillars, rest buttons, etc.

The Molding Press

  • How the mold interfaces with the press
  • Horizontal and vertical clamp
  • Shuttle and rotary presses

Plastic Resin Fundamentals

  • Amorphous and semi-crystalline
  • Basic properties and how they affect the mold design

Shrink

  • How to use shrink to your advantage
  • Factors that affect shrink and warp

Plastic Product Design Fundamentals

  • Common errors
  • What the mold designer needs to look for in a product design

Sprue, Runner and Gate

  • Common gate design errors
  • Runner sizing guidelines
  • Runner pullers

Ejection

  • Determining ejector place
  • Pin orientation methods
  • Knock-out patterns
  • Return pins and springs

Basic Mold Inserting

  • Solid vs. split construction
  • Criteria for inserting

Slides and Lifters

  • A thorough look at how to mold undercuts
  • Typical slide and lifter construction
  • Mechanical vs. hydraulic

Cavity Layout

  • How to efficiently “place“ the cavities in the mold and choose the best parting line
  • How it affects runners, ejection and gates

Cooling

  • The economic effect of cooling design
  • General rules for waterline placement
  • Thermal conductivity of various tool steels

Venting

  • Venting of runners
  • How venting affects the molded part
  • Why this should NOT be overlooked

Mold Steel

  • What to look for in a mold steel
  • A discussion of steel hardness
  • Alternate materials used in molds

Plating and Polishing

  • A selection chart for mold coatings
  • When and why to use plating

Mold Design from a Project Perspective Student Design Projects

  • Students will be split into groups to work on actual design projects

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This program can be applied toward the:

"I would like to thank you for the opportunity to attend the mold design class. Jim brings a wealth of experience to the table. I came out with new ideas, thoughts and good reminders. I look forward to seeing the advanced mold design class being offered at UWM."
Jeff Miller, Moldmaker, EMG, Inc.

  Sessions  
Mon.-Wed., Apr. 20-22, 2015
8am-4:30pm
Location: UWM School of Continuing Education (Click link for directions)
Instructor: John Vosmeier
$1190: Register by Fri., Feb. 20, 2015
$1290: Register on or after Sat., Feb. 21, 2015 Discount Available
CEUs: 2.0/PDHs: 20
Program No. 4830-7847
Register Now
 
  Related Courses  
Innovative Solutions for Plastic Part Production
 
  Resources  
  Plastic Injection Mold Design Basics course details PDF
 
For more information, contact:
Murali Vedula, mvedula@uwm.edu, 414-227-3121
Marcia Gabriel, gabrielm@uwm.edu, 414-227-3378
 

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