Tooling engineers and part designers working on threaded parts know the limitations of traditional tooling methods. By utilizing Dove Tail (DT) Collapsible Cores from Roehr Tool Corporation, many of these constraints can be lifted to improve part designs and increase profits.

The DT Core is a positive, mechanically actuated collapsible core that eliminates the cycle times of complex gear and rack approaches, resulting in a simplified “open-shut” tool. The maintenance advantage is dramatic due to a patented quick-lock feature that allows removal and servicing of the core unit while the mold is still in the press.

Part designs can be optimized to include more aggressive thread profiles, retention features for liners or inserts, tamper evident serrations, threads only where you need them and thinner wall sections with no need for anti-rotation lugs.

“The DT Core is changing the way part and mold designers approach threaded parts,” says Al Hickok, OEM Sales Manager. “Molders are benefiting from cost savings through the life of the mold. We’re proud to see the DT Core has made its way into the decision making process for many industries including packaging, plumbing, irrigation, electrical, and medical components.”

DT Cores are available in four standard sizes to match common industry cap diameters, and are an economical alternative to traditional methods used to mold parts for many products requiring internal threads, undercuts or protrusions.

Custom cores have been made ranging from 10mm to 200mm. The finished thread detail can also be provided to reduce mold building time and expense.