Patent ID: 7415910

Claim:
A continuous screw tightening machine comprising: a driving machine, equipped with a grip handle, is mounted to said driving machine; a bit for screw tightening, said bit being removably connected to the driving machine through a reduction gear and a clutch to configure a tightening machine main body; a screw feed mechanism main body mounted to a front of said tightening machine main body such that said screw feed mechanism main body is capable of being slid in a longitudinal direction of said bit relative to said tightening machine main body, wherein said bit is rotatably inserted inside of said screw feed mechanism main body; a screw feed mechanism configured in said screw feed mechanism main body, said screw feed mechanism being synchronized with the sliding in the longitudinal direction of said tightening machine main body involved in a screw tightening operation by the bit to sequentially feed a screw to a position where a tightening operation is being carried out by the bit, wherein said screw feed mechanism comprises a feeder block having a through hole through which the bit can be passed, a feed lever mounted to the back of said feeder block, and a support lever mounted to the back of said feeder block, wherein said feeder block includes a recess receiving a grip finger for holding a head of a screw, a recess receiving a grip holder for holding the head of the screw, and a relief receiving a support block that is movable in a transverse direction relative to the longitudinal axis of the bit, said feeder block also being provided with a latch hole forming a displacement space for a feed latch which is mounted to the feed lever; a screw supply mechanism for continuously supplying a number of single-part screws in sequence under the force of gravity to said screw feed mechanism, said screw supply mechanism being fixed to said screw feed mechanism main body so that an outlet end of said screw supply mechanism is positioned at a screw receiving opening in said screw feed mechanism to directly deliver screw to the screw feed mechanism; and a tip block connected to said screw feed mechanism main body, said tip block providing a surface to be contacted with an object, wherein a desired position of said tip block, in the longitudinal direction with respect to the screw feed mechanism main body, is adjustable.