Patent ID: 7704065

Claim:
An injection stretch blow molding apparatus which includes at least an injection molding section and a stretch blow molding section and includes a turntable which intermittently transfers neck molds disposed corresponding to the respective molding sections to the respective molding sections, the injection stretch blow molding apparatus comprising: a lower base which is secured on a stage and forms a molding space of each of the molding sections between the lower base and the turntable; an upper base which is disposed above the lower base and supports the turntable; and vertical clamping device that raises and lowers the upper base with respect to the lower base; wherein the vertical clamping device includes: a pulling plate disposed in the stage under the lower base; a plurality of tie rods which pass through the lower base and connect the upper base with the pulling plate; a vertical clamping toggle mechanism which is disposed in the stage at a position under the injection molding section and is expanded and contracted with respect to the lower base as a reference position to raise and lower the pulling plate; and a first motor which transmits a driving force to the vertical clamping toggle mechanism; wherein, when one of the upper base and the pulling plate is a movable section and one of the lower base and the stage is a stationary section, the stretch blow molding section is provided with a restriction device that restricts the upper base from rising above the stretch blow molding section by maintaining a constant distance between the movable section and the stationary section when clamped by the vertical clamping device.