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Fundamentals of
Mold Design and Construction
This seminar provides a
fundamental knowledge of mold design and construction. You will
learn the basics of meaningful mold design, how to determine cooling
efficiency, draft angles, gate and runner design, venting
principles, and obtain a basic understanding of how molds are built.
Section 1 - A Primer On Molds
1 - The injection molding concept
2 - Importance of the mold
3 - Mold base components
4 - Injection half of the mold
5 - Ejector half of the mold
Section 2 - Mold Design Basics
1 - Gathering information
Which plastic?
Determining shrinkage
How many cavities?
Which mold material?
2 - Mold surface treatments
3 - Product surface finish
4 - Gates and runners
5 - Venting
6 - Locating cavities and cooling lines
7 - Mold life expectancies
8 - Ownership of the mold (and other tooling)
Section 3 - Basic Mold Construction
1 - Cavities, cores and shutoff lands
2 - Cavity retainer plates, cut-in-the-solid
3 - Support plates and pillars
4 - Ejector housings
5 - Determining the parting line
6 - Machining methods
7 - Other fabrication methods
8 - Polishing and finishing
9 - Textures
10 - Plating
Section 4 - Action Areas Of The Mold
1 - Slides
2 - Cams
3 - Lifters
4 - Unscrewing devices
5 - Hand-loaded inserts
6 - Typical ejection systems
Section 5 - Controlling Mold Temperatures
1 - Control units vs. manifold systems
2 - Laminar flow and turbulent flow
3 - Determining waterline locations
4 - Bubblers and cascades
5 - Heat transfer metals
6 - Air cooling
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