Positioning structure for nail making machine

The positioning structure for the nail making machine comprises a base, connecting plates and a U-shaped frame, a containing groove is formed in the middle of the base, first clamping grooves are formed in the positions, on the front end and the rear end of the containing groove, of the base, and the bottoms of the four connecting plates are inserted into the four first clamping grooves respectively; the bottoms of the four connecting plates are fixedly connected with the base through four first bolts correspondingly, second clamping grooves are formed in the two sides of the inner walls of the two U-shaped frames correspondingly, the tops of the four connecting plates are inserted into the four second clamping grooves correspondingly, and the tops of the four connecting plates are fixedlyconnected with the two U-shaped frames through four second bolts correspondingly; fixing blocks are fixed to the two ends of the two U-shaped frames correspondingly, and the fixing blocks at the twoends of the two U-shaped f