Cable core sealing performance detection device

The utility model provides a cable core sealing detection device, which relates to the technical field of cable detection and comprises a water tank, two fixing rods are fixedly mounted on the inner surface wall of the water tank, arc-shaped placement plates are fixedly mounted at the top ends of the two fixing rods, and a fixing mechanism is arranged on the inner surface wall of the water tank. Firstly, a cable is placed on two arc-shaped placing plates, then a motor is started, the motor drives a threaded screw rod to rotate, the threaded screw rod drives a sliding block to move downwards, and the sliding block drives two arc-shaped clamping plates to move downwards through a fixing plate until the two arc-shaped clamping plates clamp and fix the cable, so that the cable can be prevented from being damaged when the cable is subjected to sealing detection. And a first rubber pad and a second rubber pad are arranged, so that the cable can be protected, the cable is prevented from being damaged by clamping, an