Novel internal pressure resistance tester of PET (polyethylene glycol terephthalate) bottle

The utility model relates to a novel internal pressure resistance tester of a PET (polyethylene glycol terephthalate) bottle. The novel internal pressure resistance tester is characterized by comprising a test box, a compression cylinder, a cylinder pressure head and a bottleneck bracket, wherein the compression cylinder is fixedly arranged at the inner top surface of the test box; the cylinder pressure head for vertically going up and down is fixedly arranged at the bottom end of a cylinder rod of the compression cylinder; the bottleneck bracket at the lower part of the cylinder pressure head is horizontally and fixedly arranged inside the test box; an air inlet is arranged at the cylinder pressure head; the inner end of the air inlet is arranged at the lower surface of the cylinder pressure head; and the outer end of the air inlet is connected to an external test air source through a pipeline. The novel internal pressure resistance tester is scientific and reasonable in structure design, low in demand on pr