Common Causes and Improvements for Unstable Insert Location in PU Foam Parts
Locating Features and Insert Tolerance Do Not Match
Wide insert variation or loose pin-and-hole fit creates positional variation. Actual insert tolerance should be confirmed before tool design.
Foam Pressure Can Move Inserts
Flow direction, injection point and local pressure may lift or tilt inserts. Appropriate clamping, flow-path changes and shot-weight control can help.
Loading Must Be Standardized
Operators should be able to confirm correct seating. Error-proofing, loading sequence and inspection of worn locating features support consistency.
Application Perspective from Taizhou and Zhejiang
The Taizhou facility works with Huangyan tooling and the regional EV supply chain. Parameters in this article should be confirmed against the actual component and operating environment.