Device and method for detecting angle of accessory on wire harness

The invention relates to a device and method for detecting the angle of an accessory on a wire harness, the device comprises a device frame, two clamping devices, a stretching device, a positioning device, a visual detection device, a lifting driving device and a control processing system, the two clamping devices are oppositely arranged up and down, and the clamping devices can clamp the end part of the wire harness; the stretching device is connected with at least one clamping device and can drive the clamping device to linearly move up and down; the positioning device is arranged between the two clamping devices and can fix the position of the accessory; the visual detection device comprises a detection lifting seat, a shielding plate, a shielding driving mechanism and at least two cameras, the detection lifting seat can linearly move up and down, the shielding driving mechanism can drive the shielding plate to move to a shielding position or be away from the shielding position, and the cameras are located