Ever struggled with plastic parts that just won’t eject properly because of pesky undercuts? Meet the lifter mechanism – the ingenious solution that keeps production moving smoothly!
Why Lifters Matter:
✔️ Undercut Liberation: When internal hooks or snaps would normally trap parts in the mold, lifters provide the perfect escape route
✔️ Space Efficiency: More compact than side sliders – perfect for today’s miniaturized components
✔️ Cost Saver: Eliminates the need for complex hydraulic systems in many cases
Key Design Considerations:
🔧 Angle Optimization: 12°-18° typically provides an ideal balance between movement and durability
🔧 Interference-Free Motion: Must clear ejector pins and cores (Moldflow analysis recommended)
🔧 Material Matters: H13 steel with TD coating withstands high-volume production demands
Pro Tip: For deep undercuts, combine lifters with gas-assist ejection for reliable performance
Real-World Applications:
Smartphone latch mechanisms
Automotive interior clips
Medical device closures
Our experienced mold design and engineering team consistently offers optimal mold design solutions, incorporating lifters and sliders for improved demolding.
