Automatic send spiral -lock to put

The utility model provides an automatic send spiral -lock to put, left side between tracks connection piece is established in the fixed block left side, right side between tracks connection piece is established on the fixed block right side, the stationary blade is fixed to the fixed block up end, the fixed left track piece of left side between tracks connection piece up end, the fixed right track piece of right side between tracks connection piece up end, the both ends of connection piece are equipped with oval groove respectively, the centre is equipped with the screw hole, the terminal surface passes oval groove connection connection piece one end through lead screw under the between tracks connection piece of a left side, the terminal surface passes the oval groove connection connection piece other end through lead screw under the between tracks connection piece of the right side, the terminal surface passes screw hole connection connection piece through lead screw under the fixed block, and the lead screw passes left between tracks connection piece in proper order, fixed block and right between tracks connection piece, the knob is connected to lead screw one end, the other end is fixed with right between tracks connection piece. The utility model has the advantages of replace controlling with positive and negative lead screw with synchronous gear and adjust track precision placed in the middle, improve the precision, secondly, work efficiency is high.