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Sequential Valve Gating Solution for a Door Panel

Sequential Valve Gating Solution for a Door Panel

Customer challenge

General Motors identified a critical need for determining a proper gating and runner system for a door panel tool. Specific requirements to be addressed included the following: • Is there adequate spacing between the drops? • Can the mold be filled with reasonable pressure? • Can the part be packed adequately within the machine’s clamp force limit? • Have major knit lines been eliminated or moved into acceptable locations? • Is the manifold turnover ratio less than 1? • Is the warpage acceptable? • Are the shear rates in the gates acceptable?

Project goals

General Motors requires tool makers and molders to adhere to their Moldflow standards. However, there are many ways to come to the conclusion for proper gate and runner sizing, for instance on a door panel. So, this door panel for General Motors needed direct gates, and no knit lines in the map pocket area.

Solution

Autodesk Moldflow Insight was used to run various gating and sequential valve gating scenarios. Because of the use of Moldflow Insight, the recommendation of a runner design to 9 drops instead of the original proposal of 8 drops, General Motors was able to meet the goals set for this door panel.

Business outcome

Having Moldflow software in-house allows General Motors to run various scenarios in analysis. This saves the valuable time and money it takes to mold a part and then make real world corrections. In simulation, this saves weeks if not months in the manufacturing process, and saves $50,000+.

Conclusion

While adding additional gates and sequential valve gate sequencing, the extra expense of these manifolds can be quickly justified in many ways when you realize how much more freedom and control it can afford you. Those additional costs can be minimized when you leverage the use of flow simulation along with it to place the nozzles and gates correctly.

Project summary

    Duration & delivery

  • 30
  • 2020-11-04

    Autodesk solutions

  • Moldflow Insight

    Services provided

  • Simulation

    Customer industry

  • Design & Manufacturing
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