conception des moules

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Utilizing Mold Tools and Other Techniques for Better Mold Design

Andy Hall, CSWE

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Prerequisites• Basic Part Modeling

• Surfaces

• Multi-body part modeling

• Advanced assemblies• In-context assembly modeling• Assembly structure and management• Hole series

• Use of design libraries for reusable data (components, features, smart components, etc.)

• Weldments (optional)

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Agenda• Intro to mold tools

• Overview of the workflow• Parting surface• Components needed for successful tooling split• Examples• EDM electrode design

• Mold base design• 3D Content central download• Using a mold base assembly• Placing inserts from the Tooling Split• Ejector Pin Placement

• Other techniques of mold design• Using an insert assembly and Cavity tool

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SolidWorks Plastics for Mold Designers

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Intro to mold toolsHere is the simple work flow for using the automated mold tools in

SolidWorks• Draft analysis and parting line• Shutoff surfaces• Parting surfaces• Tooling split• Side cores, Core pins, and Lifters

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Draft analysis and parting line

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Shutoff surface

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Parting Surface

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Tooling Split

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Side Cores, Core Pins, Lifters, and Ejector Pins

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Multi Body Part Explode

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Parting Surface

• Tangent to surface—Sets the parting surface tangent to the surface adjacent to the parting line.

• Normal to surface—Sets the parting surface normal to the surface adjacent the parting line.• Reverse Alignment (Available for Normal to surface when two faces adjacent to

the parting edge are almost parallel.) Changes the face that is normal to the parting surface.

• Perpendicular to pull—Sets the parting surface perpendicular to the direction of pull.• Manual mode

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Parting Surface—Tangent to Surface

• Tangent to surface—Sets the parting surface tangent to the surface adjacent to the parting line.

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Parting Surface—Normal to Surface

• Normal to surface—Sets the parting surface normal to the surface adjacent the parting line.• Reverse Alignment (Available for Normal to surface when two faces adjacent to

the parting edge are almost parallel.) Changes the face that is normal to the parting surface.

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Parting Surface—Perpendicular to Pull

• Perpendicular to pull—Sets the parting surface perpendicular to the direction of pull.• Manual mode

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Components needed for a successful tooling splitFrom Knowledge Base Solution Id: S-031697

• No geometrical errors. (Tools > Check)• Close shut off profiles.• Parting line/shut off faces command should show the message 'the mold is

separable into core and cavity’• There will be three surface body folders –Cavity, core and parting.

• The core and cavity surfaces should be able to knit with the parting surfaces. • Manually created parting surfaces need to be put in the parting surfaces

folder to make sure that they will knit with the existing parting surfaces. • Similarly, if the shut off faces are manually created, then they should be put

in core and cavity surfaces folder (a copy in each folder). • The tooling split sketch should be smaller than the parting face enclosure. • The tooling split block height should be more than the core and cavity side.

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Components needed for a successful tooling splitFrom Knowledge Base Solution Id: S-031697• No geometrical errors. (Tools > Check)

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• No geometrical errors. (Tools > Check)• Close shut off profiles.

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separable into core and cavity’

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in core and cavity surfaces folder (a copy in each folder).

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Components needed for a successful tooling splitThree surface body folders –Cavity, core and parting.

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in core and cavity surfaces folder (a copy in each folder). • The tooling split sketch should be smaller than the parting face enclosure.

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Components needed for successful tooling splitThe tooling split sketch should be smaller than the parting face enclosure.

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in core and cavity surfaces folder (a copy in each folder). • The tooling split sketch should be smaller than the parting face enclosure. • The tooling split block height should be more than the core and cavity side.

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Components needed for a successful tooling splitThe tooling split block height should be more than the core and cavity side.

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Example 1• Selecting and controlling shutoff surfaces• Manually creating the parting surface using the SolidWorks surfacing tools• Tooling Split with Interlock surface

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Example 2• Splitting a body after the tooling split to get side pull features• Untrim Surface for parting surface • Extruding a surface with an end cap and splitting the Cavity.

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What’s New in 2013 for Mold DesignersThe Intersect Tool

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EDM electrode design• Easiest to do in part mode after tooling split• Use the indent feature and move face

• You can also use the indent feature in assembly mode• Or, copy the body and use the combine feature

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Mold Base DesignWe have our tooling split and mold cavities—what next?

• Download the mold base, if we don’t have one in our library already.

• Sources:• 3D Content Central • DME• Other mold base/tooling companies

• Preparing the downloaded mold base for use.

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3D Content Central

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Using A Mold Base Assembly• This can be done many different ways—mine might not be the best

• Organize it into the A, B and Ejector subassemblies (if necessary, side pull assemblies)

• Using “Form New Subassembly Here” command

• Dragging and dropping parts from the main assembly to the subassembly

• Create display states to easily work with the inserts• I like to use as least four• A side display state, B side display state, Ejector plate, and B side and Ejector

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Placing inserts from the Tooling Split into the mold base assembly

• Create an assembly from the solid bodies of the tooling split part• Insert that subassembly into the mold assembly• Locate the assembly using mates and then fix it

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Placing inserts from the Tooling Split into the mold base assembly

• This is where we get really good and top down assembly modeling• Drag and drop inserts from the insert assembly to the A and B side

Sub assemblies.• Use assembly pattern for multiple inserts• Create in-context cuts in A and B Plate

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Ejector Pin Placement

• Easiest to create a new display state

• Hole series

• Weldments

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Ejector Pin Placement—Hole Series

• Place one hole series per size

• Easiest to preselect face (Unlike the Hole Wizard)

• Notice the DME Standards as the hole type.

• Use the existing holes from the insert for the location of the hole

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Ejector Pin Placement—Inserting pins• Use the holes created from the hole series

• Insert a component in the “Ejector Plate” assembly

• Start with 3D Sketch and use weldment profiles

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Advantages of using weldments for ejector pins• Easy to place with one in context part file

• Defaults to a multi-body part

• Can use a weldment cut list table to define the lengths of ejector pins for the person who is grinding the pins

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Other features to finish up the mold

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Use the same techniques for more complicated mold designs

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Other techniques of mold design• Insert assembly with Cavity tools

• Reusable assembly (Insert assembly)

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Thank You

conception des moules

parting surface normal

parting surface perpendicular

parting surface tangent

parting surfacetangent

parting edge

surface adjacent

mold designers

given mold

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