Automatic feeding and stretching system

The utility model relates to an automatic feeding and stretching system, which belongs to the technical field of aluminum profile extrusion production lines and comprises a cooling bed, a gap bridge device and a straightening machine which are sequentially arranged along the flowing direction of profiles. The transverse deviation eliminating device comprises a plurality of transverse material blocking devices which are arranged in the stretching direction of the sectional materials and can ascend and descend. The cooling bed is further provided with a stub bar detection device to determine the position of the free end of the sectional material, and the stub bar detection device is connected with a jaw position adjusting device corresponding to the jaw of the straightening machine so that the jaw position adjusting device can adjust the position of the jaw according to the position of the free end of the sectional material. According to the utility model, the problems that the jaw cannot accurately clamp mater