The utility model discloses a stretch blow molding machine, which comprises a frame, an extrusion mechanism, a die head, a mold clamping mechanism, a lower blowing mechanism, a manipulator and a controller. The manipulator comprises at least one pair of clamping mechanisms, a transmission mechanism and a manipulator driving mechanism. The controller includes a manipulator position drive unit configured to control the downward stretching speed of the parison by the manipulator, such that the vertical downward moving speed of the manipulator along the second guide rail is higher than the free-sagging speed of the extruded parison, thereby longitudinally stretching the parison during sagging and improving the strength of the product. By controlling the manipulator to longitudinally stretch the parison during traction, the molecular chains in the parison are effectively arranged, enhancing the toughness and strength of the product and making it less susceptible to damage.
Country Code: CN
Application Number: CN201120493840.8
