A new electric valve-gate (EVG) series for tight-pitch situations is said to perform better than pneumatic alternatives. EVG comes from Mold-Masters Ltd., Georgetown, Ont. Its closing force can be up to twice that of a pneumatic system. Pin movement takes less than 0.1 sec. The EVG is said to be up to 90% more energy efficient than pneumatic actuators. EVG produces almost no particulate pollution, making it suitable for clean rooms, and tool-plate costs are reduced as there is no requirement for gun drilling of air or hydraulic channels, plugging of gun-drilled lines, or need for water/hydraulic fittings. Standardized, modular design allows the EVG to be moved between molds. Its touchscreen control sequences the valves and can shut off a cavity without altering tip heats, a feature not possible with fluid-based systems.
Editor PickVIDEO: A Look Back at Molding 2017
John Bozzelli’s workshop; RocTool’s Open House; an interview with Bruce Main; and insights from conference co-chairs Matt Naitove and Tony Deligio.