Supplying full service custom injection molding tryout services on-time and on-budget is nothing new for Canada-based Injection Technologies Inc. (IT). Following a planned plant-wide upgrade to compact controllers from Eurotherm, IT's product meets higher production quality standards than before, in less time and with less waste.
IT runs 11 injection molding presses ranging from 130 to 3,500 tons in its nearly 50,000 ft2 facility. The wide range of specialized machinery allows the company to efficiently set up and test a variety of parts while varying all critical injection-molding parameters. For a company like IT that has build its reputation on providing test or short-run molded parts, precise control and fast turnaround is critical.
"When customers book a trial, they need it in two days - they can't wait a third day," says Ken Field, IT general manager. "Customer schedules change, and everything is a lot tighter than what it used to be years ago. We've gone from scheduling of days to hours, and we do our best to work within these tight deadlines."Because time equals money for a test facility, when Fields and IT's plant manager Rick Stieler saw machine downtime due to control board problems, they knew it was time to improve that part of the operation. In addition, because IT has several presses with the same controller, interchangeability was a key factor.
To satisfy these objectives, IT selected the Maco compact control system from Leesburg, Va., a general-purpose programmable logic controller with the advantages of integrated, total machine control in a complete package. The Maco controller supports open- or closed-loop Impact II injection process control, and the Impact II control also creates a theoretical model of the process after a few runs to automatically optimize the process to compensate for any deviations. Precise adaptive automatic tuning is included for temperature control. SPC calculations and charts can be viewed on Eurotherm's OPtima CE touch screen displays. For more information or to view a video interview with Injection Technologies Inc., Windsor, Ontario, visit www.eurotherm.com.
Control Retrofits Pay Off for Molding Testing Firm
July 31, 2009