Tips & Tricks: Splitting an Injection Mold Volume

Written By: Bettina Giemsa
  • 9/2/2016

When working with an injection mold, rather than creating a volume, you can split a workpiece or a volume into one or two volumes. The system then creates features resulting from the split as assembly features.

Split injection molding workpiece in Creo

Split mold volume created in Creo 3.0

Splitting does not change the workpiece or die block geometry. Whenever a workpiece or die block is split, the system copies the workpieces or die blocks into one or two volumes that you can then use when you create mold components or die blocks. To split a volume, follow these steps:

Step 1: Subtract the slider

To get started splitting the volume, first, subtract the slider. Here’s how:

  1. On the Mold tab, click Volume Split.
  2. On the Menu Manager dialog, click One Volume and then click Done. The Split dialog opens.
  3. Select the slider volume on the model, then on the Select dialog, click OK.

New slider volume being selected

A new slider volume is being selected.

  1. On the Menu Manager dialog, select the Island 1 checkbox, and then click Done.
  2. On the Split dialog, click OK.
  3. Using the Properties dialog, click Shade to preview the volume, and then click OK.

A new injection mold volume created in Creo

New injection mold volume is created.

Step 2: Split the volume

Next, to split the volume into two volumes, follow these steps:

  1. Click Volume Split again. On the Menu Manager dialog, click Mold Volume, and then click Done.
  2. On the Search Tool: 1 dialog, select the volume that you want to split and click the arrow button (>>) to move it to the right (selected) column. Click Close.
  3. Change display style to Wireframe.
  4. In the graphics window, select the split surfaces.
  5. Click OK on the Select dialog.
  6. Change display style to Shading With Edges.
  7. On the Split dialog, click OK.

Step 3: Preview and name the volumes

Preview and rename the new volumes as follows:

  1. On the Properties dialog, click the Shade button, enter a name for the highlighted volume, and then click OK.
  2. On the Properties dialog, click the Shade button again, enter a name for the highlighted volume, and then click OK.

To see a demonstration, check out this video tutorial on PTC Univerity’s Learning Exchange.  You may need to create a PTC University Learning Exchange account if you don’t already have one. But the good news is that with a login, you’ll have access to hundreds of in-depth demonstrations and tutorials for PTC products.

You can also learn more by reading the PTC Creo Help Center page About Splitting to Volumes.

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About the Author

Bettina Giemsa

I graduated from Ruhr University in Bochum, Germany, with a Master of Arts in American Studies, Japanese, Economics * Started my career in Marketing on the agency side, spending almost 3 years in media planning * Ran Marketing at ITEDO Software GmbH, Germany from 2001-2006 where I first got in touch with the CAD business * Became part of the PTC Marketing organization when ITEDO was acquired by PTC in October 2006 * Currently, I work in PTC Customer Success, focusing on PTC University’s global Marketing program. Last, but not least, I am the mother of 2, enjoy running, riding and rock music among many other things.