The invention provides a parison length detection device for a blow molding machine, relating to the technical field of processing measurement. A detection device body comprises a light source assembly, a distance measuring mechanism and a measuring range regulating assembly. A waste box is installed at the bottom of the measuring range regulating assembly, and the distance measuring mechanism is installed above the middle of the waste box. A photosensitive element is installed at the top of the distance measuring mechanism, and an inclination detection assembly is installed at the top of the photosensitive element. An extrusion die head is installed at the top of the distance measuring mechanism. The parison length detection device for a blow molding machine adopts an annular light source assembly and embeds the distance measuring mechanism into the hollow parison for subsequent length detection. A separate light source provides comprehensive detection around the parison, detecting inclined, damaged or deformed parisons. It skips abnormal parison parts at the bottom, improving detection reliability of effective length and reducing the defective rate of subsequent blow molding.
Country Code: CN
Application Number: CN202410309892.7
