Centering tool for low-voltage wire harness heat shrink tube

A heat shrink tube centering tool comprises a sensing device, a centering device and a control device. The sensing device is used for generating a sensing signal when the low-voltage wire harness reaches the centering station; the centering device comprises a first air cylinder and a second air cylinder, a first push plate is arranged at the output end of the first air cylinder, a second push plate is arranged at the output end of the second air cylinder, and the first push plate and the second push plate are symmetrically arranged on the two sides of the centering station; the control device is in signal connection with the centering device and the induction device, and the control device is used for controlling the first air cylinder and the second air cylinder to synchronously push the first push plate and the second push plate at the same speed when the induction signal is read, so that a heat shrink tube is pushed to the middle section of the low-voltage wire harness and is reset. According to the invent