Electroimpact, Inc.

Cosmos G Krejci

Peter B Zieve

Reese R Allen

The system includes a ram assembly with fingers for grasping a fastener. An actuator moves the ram assembly toward the workpiece, under machine control. A housing member which is movable by the actuator includes a holding member for an anvil portion of the ram assembly, the holding member being movable within the housing member. The holding member and the housing member are arranged so there is a selected air gap between the movable member and the top of the housing at the start of the fastener cycle. An insertion sensor assembly changes signal state when the air gap begins to close. When the air gap begins to close either too early or too late relative to a properly positioned fastener, the actuator is stopped by the cycle motion controller.

System using an air gap for workpiece protection in a fastener machine

A machine includes a feed system for moving fasteners to a track-type fastener injector system and a pusher for moving the fasteners along the track. A rivet ejector assembly comprises a pair of bomb bay-type doors which support a portion of the track feed system and a mechanism for recognizing misfed rivets as they approach the bomb bay doors. The bomb bay doors are rotated about their longitudinal axes so that opposing inner surfaces of the bomb bay doors pivot away from each other, along with the track portion, permitting the fastener to fall or be blown therethrough, ejected from the injector system.

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Ames, IA, United States of America

Cosmos G Krejci