Automatic screw feeder

Abstract

An automatic screw feeder serves to automatically align a plurality screws laying in disarray and feed the aligned screws one by one to a power screwdriver so as to avoid screw clogging.

1 . An automatic screw feeder, comprising:
 a feeding device, having an immovable seat and sliding block, wherein the immovable seat consistently stands at a predetermined position while the sliding block is able to linearly reciprocate with respect to the immovable seat; and   a distribution board, configured to be perpendicular to the feeding device and is able to linearly reciprocate with respect to the sliding block between a receiving position and a feeding position, said distribution board having one lateral formed with a receiving recess, wherein when the distribution board is at the receiving position, the receiving recess receives one screw and when the distribution board is at the feeding position, the screw at the receiving recess is pushed by the sliding block and falls into a feeding pipe.   
   
   
       2 . The automatic screw feeder of  claim 1 , wherein the immovable seat and the sliding block jointly define a blowing vent at between and the feeding pipe connected with the immovable seat has an upper opening communicated with the blowing vent, so that when a blowing unit gives a high-pressure air to the blowing vent, the screw falling into the feeding pipe is pushed to advance along the feeding pipe and delivered to a power screwdriver. 
   
   
       3 . The automatic screw feeder of  claim 1 , wherein the sliding block is driven by an extendable shaft of a feeding cylinder to linearly reciprocate. 
   
   
       4 . The automatic screw feeder of  claim 1 , wherein the distribution board is driven by an extendable shaft of a distribution cylinder to linearly reciprocate. 
   
   
       5 . The automatic screw feeder of  claim 1 , further comprising a rail that allows a plurality of screws aligned therein, wherein a screw body of each said screw is received in a groove of the rail while a screw head of each said screw is propped by a top surface of the rail. 
   
   
       6 . The automatic screw feeder of  claim 5 , wherein a depressor is set along the top surface of the rail and separated from the top surface of the rail by a predetermined distance so that the depressor contacts tops of the screws in the rail to level the screws. 
   
   
       7 . The automatic screw feeder of  claim 5 , wherein two ends of the rail are defined as an inlet end and an outlet end, respectively, said rail tilting with the inlet end standing higher than the outlet end that contacts the lateral of the distribution board where the receiving recess is formed.