How Mold Lifters Solve Deep Undercut Challenges

When injection-molded parts have deep recesses or internal hooks, standard mold designs may not be able to eject the part cleanly. This is where lifters become critical.

At Dongxinda, we integrate precision-engineered lifters into mold cores to release parts with deep undercuts or angled features safely and efficiently.

Why Lifters Work:

• They move both up and out, freeing internal surfaces during mold opening.

• Ideal for angled ribs, snap hooks, or any feature perpendicular to the pull direction.

• Often used where slides aren’t feasible due to space constraints.

Our lifters are hardened, precision-fitted, and fully tested for high-volume performance.

FAQs:

• Are lifters suitable for multi-cavity molds?
  Yes, we synchronize multiple lifters across cavities with cam or pin control.

• Will lifters increase mold maintenance needs?
  Not significantly—we design them for easy access and high wear resistance.

• Can lifters handle glass-filled materials?
  Yes, we use appropriate tool steel and surface treatments for high-wear environments.