Gang Nailing System for Use in Assembly of Floor of Manufactured Building

A gang nailing system for use in assembling a perimeter rail of a floor of a manufactured building as the perimeter rail moves in a first direction, the gang nailing system comprising:

• a horizontal transport carriage aligned in the first direction;
• a transport carriage motor configured to drive the horizontal transport carriage;
• a gang nailer that includes a gang nail press suspended below the horizontal transport carriage, the gang nailer configured to receive a plurality of rim joist boards that are abutted together in an end-to-end configuration as the plurality of rim joist boards move in the first direction, wherein the gang nail press is configured to drive gang nail plates into the plurality of rim joist boards in locations at which the plurality of rim joist boards are abutted together, thereby attaching the plurality of rim joist boards together to form the perimeter rail;
• a main encoder that generates pulses used in monitoring positions of the perimeter rail as the perimeter rail moves in the first direction;
• and
• a controller that executes instructions to control the gang nailing system, wherein the controller is operable to:
• based on counting a predetermined number of pulses from the main encoder, control the transport carriage motor to move the transport carriage with the gang nail press in the first direction at the same speed as that at which the abutted rim joist boards are moving, so that an abutment point between two of the abutted rim joist boards remains centered between two opposing plates of the gang nail press;
• and
• while the gang nail press moves in the first direction at the same speed as that at which the two abutted rim joist boards are moving, control a press activator to cause the opposing plates of the press to clamp down against the two abutted rim joist boards and drive in gang nails on either side thereof to form a portion of the perimeter rail.