Krejci, C., "Rivet and Bolt Injector with Bomb Bay Ejection Doors," SAE Int. J. Aerosp. 6(2):431-440, 2013, doi:10.4271/2013-01-2151.
Electroimpact's newest riveting machine features a track-style injector with Bomb Bay Ejection Doors. The Bomb Bay Ejection Doors are a robust way to eject fasteners from track style injector. Track style injectors are commonly used by Electroimpact and others in the industry. Using the Bomb Bay Doors for fastener ejection consists of opening the tracks allowing very solid clearing of an injector when ejecting a fastener translating to a more reliable fastener delivery system. Examples of when fastener ejection is needed are when a fastener is sent backwards, when there are two in the tube, or when a machine operator stops or resets the machine during a fastening cycle. This method allows fasteners to be cleared in nearly every situation when ejecting a fastener is required. Additional feature of Electroimpact's new injection system is integrated anvil tool change. Anvils with fingers are parked on each Injector and an indexing system automatically changes tools for different fastener diameter. Fundamentally, this track-style Injector has only one moving part, the Pusher, used in every fastening cycle. With the Bomb Bay Door ejection system and the integrated automatic tool change, this injection system is very flexible, and is likely one of the fastest in the industry with injection times of under a second. In addition to speed, the new eject system is a robust way to recover from common errors, adding to machine reliability. Overall the new injection system featured on Electroimpact's new riveting machines is a fast, flexible, and robust new system for fastener delivery.