Plastic injection molding

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Intuitive Solutions For Every Stage of Your Design
Design Simulate Sustain Communicate
Manage

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Plastics History

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Plastics Processing Types
Extrusion
Blow Molding
Thermoforming
Vacuum Thermoforming
Compression and Transfer Molding
Injection Molding

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What is Plastic Injection Molding
The injection molding process requires the use of an injection molding machine, raw plastic
material, and a mold. The plastic is melted in the injection molding machine and then injected into the
mold, where it cools and solidifies into the final part.

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Injection Molding
Thermoforming
Extrusion Blow Molding

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Injection Molding
Probably the most common, most important, most economical process.

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Cycle of operation for injection molding

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Injection Molding: geometry of the mold
Basic components:
Mold pieces (define the geometry of the part), and
sprue, gates, runners, vents, ejection pins, cooling system

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Injection Molding: 2-piece and 3-piece molds
2-piece molds 3-piece molds

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Injection Molding: molds with moving cores and side-action cams

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Why Solidworks Mold
SOLIDWORKS 3D CAD enables product
designers and mold makers to easily incorporate design changes
throughout the development process, right up to final manufacturing.
The software, which can be used for plastic, cast, stamped, formed, and
forged designs, fully integrates product design, mold design, and
validation in one package, saving time, reducing costs, accelerating the
product development process, and increasing productivity.

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SolidWorks Mold

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360
• Checks correct draft to the faces of part.
• Verify draft angles.
• Examine angle changes within a face.
• Locate parting lines, injection, and
ejection surfaces in parts.

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360
• Locate trapped areas in a model that prevent
ejection from the mold.
• Side cores are used to produce undercut relief.
• Side cores eject from the mold as it is opened.

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360 Before Draft After Draft

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360 Before Draft After Draft
• First, verify that all faces include sufficient
draft with the Draft Analysis tool.
• Draft is a slight taper on selected model
faces that facilitates removal of the part
from the mold tooling.

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360
• Separates the core from the cavity.
• Cavity side surfaces as a positive draft.
• Core side surfaces as a negative draft.

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360
• Shut-off surfaces close up the through holes.
• Shut-off surface patch tangent to the walls hole.
• Shut-off surface patch tangent to the surface
that the penetrates.

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360
• Used to separate the mold cavity from the
core.

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360
• The surface where the mold will split into
its two halves.
• Seal the mold properly to prevent liquids
from leaking.
• Guide the tooling into place during the
molding process.
• Maintain alignment between the tooling
entities.

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360
• Used where two solid halves restrict the
geometrical possibilities for the part.
• Used to fill trapped areas that would
prevent the part from ejecting from the
mold.

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360

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SolidWorks Mold
Draft Analysis
Undercut Detection
Draft Scale
Parting Lines
Shut-off Surfaces
Parting Surfaces
Tooling Split
Core & Ejector pin
Photo View 360
• Enhance proposals, Presentation, &
Submission.
• Increasing productivity.
• Accelerating time-to-market.

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Productivity Tools in SolidWorks
Costing
e-Drawing
DimXpert
DfmXpress

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Costing
e-Drawing
DimXpert
DfmXpress
• Part Manufacturing Cost.
• Manufactures can automate their Quoting process.
• Costing for any 3D model.
• Compare Cost of Design Configurations.

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Costing
e-Drawing
DimXpert
DfmXpress

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Costing
e-Drawing
DimXpert
DfmXpress
• Powerful Communication Tool.
• Password Protection.
• Measure & Markup
suggestions.
• Approval Stamps.

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Costing
e-Drawing
DimXpert
DfmXpress

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Costing
e-Drawing
DimXpert
DfmXpress
• Automatic Dimension & tolerancing.
• Manufacturing Feature as per ASME
Y14.5M-1994.
• Used for Stack-up Analysis.

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Costing
e-Drawing
DimXpert
DfmXpress

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Costing
e-Drawing
DimXpert
DfmXpress
• Ensure for Manufacturing.
• Shows Not OK & OK Operations.
• Reduce Wastages.

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COMPANY
Subcontractors to plastics manufacturers, focused on effective production of molded components.
CHALLENGE
They needed 3D CAD to be able to import 3D models from customers.
SOLIDWORKS BENEFITS
 The best 3D CAD software to handle IGES and STEP files.
 Easy to use.
 Attractive price.
 Increased productivity.
“Not only have we been able to cut the design cycle
in half, we also can design better products with
SolidWorks.”
Jimmy Karlsson
Design Manager
Ad-plast

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COMPANY
A custom packaging manufacturer and distributor specializing in hard-shell industrial cases.
CHALLENGE
Needed a 3D design system to design custom, die-cut foam inserts for
production at its own fabrication plants as well as design its own lines
of injection-molded cases and roto-molded cases.
SOLIDWORKS BENEFITS
 Shortened product design time by 50%.
 Created design that decreased part costs.
 Reduced design errors by 65%.
 Increased sales by 15%.
“The great user interface of SolidWorks blew away
the competition."
Jim Thomson
Packaging Engineer
Ameripack

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COMPANY
Designs and builds molds, tools and dies for some of the world’s leading manufacturers.
CHALLENGE
To upgrade its design platform to a parametric CAD system in order to increase throughput, reduce design
errors and improve data flexibility.
SOLIDWORKS BENEFITS
 Reduced design cycles by 50%.
 Eliminated more than 90% of design errors.
 Added mold design and draft analysis capabilities.
 Improved handling of CAD data.
With SolidWorks software and the partner
products, we now have mold development
capabilities that we simply never had before.”
Chad Vowels
Engineering Manager
Quality Tooling, Inc.
“

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COMPANY
Producer of high quality tooling and injection molded products.
CHALLENGE
 Produce high quality product designs and optimum tool configurations.
 Dramatically reduce the time to market customer’s concept products.
 Use models for testing purposes and provide low cost, high quality plastic prototypes which reduce the
occurrence of “teething problems.”
SOLIDWORKS BENEFITS
 Send photo-realistic images to customers during the quotation stage to
provide an indication of what can be achieved.
 Convert CAD files into 3D concept models within a matter of days.
Patterson & Rothwell

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COMPANY
Special type of cutting tool inserts.
CHALLENGE
Production of complex geometry of cutting plates which requires a lot of time for engineering and creation of
technical documentation.
SOLIDWORKS BENEFITS
 Model scanned with 3D scanner is very easy to convert to SolidWorks parts
using feature recognition functionality, which speeds up production process
and reduces time to market.
SolidWorks has reduced our design time up to
30%. With advancing tools for part modeling,
engineering process is much simplified.”
Ljubivoje Filipovic
Engineer
Woksal a.d.
“

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COMPANY
Manufacturer of complex molds for plastic injection and to mold under
pressure Al and Zn.
CHALLENGE
 Molds design after 3D models created by others.
 Import CATIA, UG, IGES files and recover them.
 Standard molds automated design: HASCO, DME, etc.
SOLIDWORKS BENEFITS
 Intuitive modeling.
 Reduced design time by 40%.
 Quicker machining by using a CAM integrated solution.
“With SolidWorks we increase productivity, a reason
for us to decide to benefit off the newest capabilities
of the software through subscription service.”
Onorel Polovtev
General Manager
DR KOCHER S.R.L. - ROMANIA

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Thank You
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