Injection delay in multiple barrel injection molding

In addition to delaying when the sub barrels start injecting, you can now delay the injection start of the master barrel.

Multiple barrel thermoplastics injection molding is used to simulate the injection of a single material via multiple barrels, so the part fills more quickly and packs more evenly. This feature is supported for all mesh types.

With this release, the following enhancements have been made to support injection delay:

• Injection delay is supported for both the master and the sub-barrels.

• You can set the Delay timer to:

  • No delay
  • By time
  • By ram position

By default all barrels are set with No delay. If you do set an injection delay, at least one barrel must have no delay.

To set a delay, you need to specify relative to which barrel you are delaying the injection start. If you don't specify this reference barrel when delaying a sub-barrel, the software assumes you are delaying the sub-barrel relative to the master barrel. However, if you don't specify the reference barrel when delaying the master barrel, the analysis fails. It is important, therefore that you identify the reference barrel when delaying the start time of a barrel, and enter the injection node ID into the Delay timer dialog.

This example log shows the master barrel delayed relative to sub barrel 1 by 0.100 s. Sub barrel 1 has no delay, and is also used as the reference barrel for sub barrel 2. Sub barrel 3 is delayed until the ram position of sub barrel 2 reaches 75 mm.

Example log