Stock stretch -draw mechanism

The utility model provides a stock stretch -draw mechanism, comprising a support, stabilizer blade and can apply tensile punching hydraulic cylinder to the stock, the stabilizer blade is three at least and vertically locates on the support, open at the support middle part has the through -hole that supplies the stock to pass, punching hydraulic cylinder locates the support top, there is at least three connecting hole around the through -hole interval arrangement on the support, the periphery of stabilizer blade has external screw thread and locating in the corresponding connecting hole of can reciprocating, and on every stabilizer blade respectively threaded connection have and to carry out spacing nut to the position of stabilizer blade. During the use, support the support on the rock stratum is domatic through the stabilizer blade, the stock passes the through -hole on the support, adjusts the stabilizer blade and makes behind the seating plane perpendicular to stock axis fixedly with the nut for the upper