Patent attributes
A robotic tool changer ensures inherently safe decoupling operation by only providing pneumatic fluid to a decouple port of a pneumatic coupling mechanism in the case that the tool changer is seated on, and properly aligned with, a tool stand. Pneumatic fluid to decouple the pneumatic coupling mechanism is routed from an air source to the tool stand. A pass-through in the tool stand returns the pneumatic fluid to a pneumatic path in the tool changer leading to a decouple port of the pneumatic coupling mechanism. Hence, the tool changer must be seated on the tool stand for the decouple port to receive pneumatic fluid to operate. Furthermore, a safety coupling is interposed on the pneumatic path between the tool stand and the decouple port. The safety coupling requires the tool changer to be seated on, and properly aligned with, the tool stand to effect the flow of pneumatic fluid—otherwise, the pneumatic fluid is bled to the atmosphere.
