Automatic door actuators, which reverse automatically when objects are detected in their path, are available for retrofitting to existing automatic machining centers with single or double doors. For workers, these reduce injuries from repetitive door operation and crushing incidents.
Dynatect’s SMDA (safe machine door actuator) safely automates horizontal machine doors and has integral safety functions.
The door actuator incorporates a preprogrammed control module allowing several input and output commands. These can be wired into the machine’s controller or a simple on-off circuit; key outputs and messages can also be fed to a controller. Distinct benefits are unlimited travel distances, self-calibration, electric (pneumatic-free) operation, and no need for limit switches, light curtains, pressure switches, or photo eyes. Integrated braking engages at all positions. Some large equipment OEMs report that operators required to open and close safety doors can experience shoulder pain, and door actuators reduces repetitive shoulder injuries by half or more.