Our customer needed to achieve the highest part quality in a high-output system. Its production requirements included molding two material lids, precise mold shutoffs, accurate mold movements, and optimal cooling to ensure part quality.
NyproMold partnered with the customer and a machine supplier to develop a high-output stack mold utilizing VRS (vertical rotating stack). The design combines the productivity advantages of stack molding with the aesthetic and functional benefits of a two-material system. The center section rotates on each cycle, using a servomotor to provide fast, smooth operation. The VRS provides optimal output from the machine with precise, repeatable control for improved parts quality and extended mold life. It also has a robust, rotary union on the center section to manage all hydraulics and water. The result is a clean, simple, and low-maintenance high-production system.
The precise engagement of the mold actions and the smooth control of the VRS system enabled these molds to exceed 5 million cycles. They continue to perform with exceptional output and minimal maintenance requirements.