DME expands line of Helical Gear Stack Mold Centering devicesDME expands line of Helical Gear Stack Mold Centering devices

DME Company, a global manufacturer of mold technologies for the plastics industry, announced availability of its newest—and largest, according to the company—member of its Helical Gear Stack Mold Center Device product line, the HG48-2000.

The new Helical Gear Stack Mold Centering Devices, including the HG48-2000, save molders time and money in production with interchangeable housings and assemblies that simplify the design, installation, adjustment and maintenance of stack molds. The Helical Gear provides equal and synchronized parting line openings for two- or four-level stack molds, and the devices work on standard, spin-stack, and other types of stack molds.

“Demand for our Stack Mold Centering Devices has been strong, and customer feedback warranted the line expansion to a larger size,” said Frank Eigler, senior applications engineer for DME. “We now offer four different sizes to meet an even wider range of applications.”
   
The new HG48-2000 has a 48-mm nominal OD, 2000-mm (78.74 inches) standard maximum length of assembly, and 800 mm (31.49 inches) standard parting line opening per side.

All DME Helical Gear Centering Devices contain a double-helical gear shaft with a left-hand thread on one end, a right-hand thread on the other and two mating nuts that fit on the corresponding threads. The gear shaft is retained by a pair of tapered roller bearings in the bearing housings, and the nuts are held in the nut housings.

Since a stack mold usually needs two or four assemblies to operate, the devices are adjustable to compensate for differences between the moving and stationary side stack heights. The addition of the HG48-2000, DME now has four Helical Gear Centering Devices in its series available.

DME also just announced the new Zenith valve gate hot runner system, which the company promises will improve thermal profile. The new Zenith valve gate hot runner system offers a solution to the challenges of maintaining a perfectly flat thermal profile through uniform heat that prevents flow channel hot spots in sequential filling and family mold applications.

The Zenith HRS provides better thermal profile in the nozzle and tip—areas where uniform heat is needed to prevent flow channel hot spots, said DME. In addition to improving the thermal profile for the product, DME also focused on optimizing the supply chain and logistics to bring the system to customers more cost-effectively and with shorter lead times.
   
The Zenith HRS is available as a hydraulic or pneumatic hot half, and also offers front- and rear-loaded nozzle heater options. The new system works with a wide range of materials, particularly amorphous and semi-crystalline polymers.

“To help our customers use our hot runner systems even more efficiently, we’ve been working with resin suppliers in our hot runner lab on processing new resins being introduced into the marketplace,” said Craig Kovacic, hot runner business manager.