Stacker Turns Green With Energy: Regenerative Drive System in Servo-Driven Lumber Machine Returns Energy and Creates Efficiency

摘要

THE FLAGSHIP 18-AXIS stickering stacker is our most sophisticated machine. Used on sawmill lines, the stickering stacker inserts wooden or aluminum spacers, called "stickers," on 1- or 2-ft centers between each course of cut-to-length lumber while simultaneously stacking the courses. Typically, the motion on a stickering stacker was driven by hydraulics, variable-speed ac motors or a combination of both. MoCo had been considering an all-electric, servo-driven stacker designed to improve performance and reduce energy use. An experiment we conducted a few years ago proved that servos could operate well under sawmill conditions, but our company was unsure that the market would support such a machine.