초록 ▼

A fastener driving apparatus is disclosed which comprises a vibrating feed hopper, a fastener feed assembly for receiving the fasteners from the hopper and serially delivering the fasteners to a discharge tube which leads to an automatic screwdriver. The fastener feed assembly comprises a body membe

A fastener driving apparatus is disclosed which comprises a vibrating feed hopper, a fastener feed assembly for receiving the fasteners from the hopper and serially delivering the fasteners to a discharge tube which leads to an automatic screwdriver. The fastener feed assembly comprises a body member which mounts a slide for transverse sliding movement between a first position wherein the fastener is received in a notch in the slide, and a second position where the fastener is delivered to a discharge opening which leads to the discharge tube and to the screwdriver. A first air line system is provided for moving the slide toward the first or fastener receiving position, and for concurrently injecting air into the discharge opening to move a fastener previously positioned in the tube to the screwdriver. A second air line is provided for directing a stream of air into contact with the fastener at the second position so as to positively move the fastener into the discharge opening.

대표청구항 ▼

A fastener feed assembly adapted for serially feeding fasteners of the type having a shank and an enlarged head at one end of the shank, and from a fastener delivery chute to a powered fastener driving device or the like, said feed assembly comprising a body member having a longitudinal slot adapted

A fastener feed assembly adapted for serially feeding fasteners of the type having a shank and an enlarged head at one end of the shank, and from a fastener delivery chute to a powered fastener driving device or the like, said feed assembly comprising a body member having a longitudinal slot adapted to serially receive the fasteners from the delivery chute, a transverse slot communicating at right angles with said longitudinal slot, and a vertical discharge opening communicating with said transverse slot at a location transversely spaced from said longitudinal slot, a slide mounted for transverse sliding movement in said transverse slot, said slide having a front transverse surface facing said longitudinal slot, and with said front transverse surface having a notch therein which is adapted to receive the shank of a fastener therein, and with said slide being transversely slidable between a first position wherein said notch is aligned with said longitudinal slot so as to be adapted to receive a fastener from said longitudinal slot, and a second position wherein said notch is aligned with said discharge opening, spring biasing means for biasing said slide toward said second position, first air line means for moving said slide toward said first position and against the force of said spring biasing means, said first air line means including means for directing a stream of air downwardly into said discharge opening concurrently with the moving of said slide toward said first position, and so that a fastener which has previously dropped into said discharge opening may be advanced to the powered fastener driving device when said slide is moved toward said first position, second air line means which is separate from said first air line means for directing a stream of air into contact with a fastener held in said notch when said slide is in said second position and so as to move said fastener into said discharge opening, and control means for selectively activating said first and second air line means so as to serially move said slide to said first position to receive a fastener in said notch, and then to said second position where the fastener in said notch is moved into said discharge opening by said second air supply means, and the fastener thus drops into said discharge opening.