Patent ID: 7811047
Filing Date: 2010-10-12
Classification: B65G

Abstract:
1. An underlayment stickering stacker, comprising: a hoist device configured to support a stack of material comprising a plurality of courses; a regenerative hoist actuator configured to impart movement to the hoist device, and to provide regenerative braking power to the hoist device; a carriage/fork device configured to move each course of material from an infeed device to the hoist device, thereby forming the stack of material; a regenerative carriage/fork actuator configured to impart movement to the carriage/fork device and to provide regenerative braking power to the carriage/fork device; a rake-off device configured to facilitate removal of each course of material from the carriage/fork device; a regenerative rake-off actuator configured to impart movement to the rake-off device and to provide regenerative braking power to the rake-off device; a signal generator configured to generate a cyclical master signal; a carriage/fork servo drive, wherein the carriage/fork actuator is configured to move to the carriage/fork device according to a predetermined cyclical carriage/fork motion pattern, and the carriage/fork servo drive is configured to cause the carriage/fork motion pattern to be substantially synchronized with the master signal; a rake-off servo drive, wherein the rake-off actuator is configured to move the rake-off device according to a predetermined cyclical rake-off motion pattern, and the rake-off servo drive is configured to cause the rake-off motion pattern to be substantially synchronized with the master signal; a stick device configured to facilitate underlayment of sticks; a stick servo actuator configured to move the stick device according to a predetermined cyclical stick motion pattern; and a stick servo drive configured to cause the stick motion pattern to be substantially synchronized with the master signal.