Double-station feeding device

A double-station feeding device comprises a base fixed to the ground and located behind a tire building machine building drum, and a front guide rail and a rear guide rail which are fixed to the base and transversely and horizontally placed. The left feeding rack and the right feeding rack are identical and ride on the front guide rail and the rear guide rail to slide left and right, and the four pulleys can slide on the guide rails in four directions of a rack bottom plate, are driven by hydraulic pressure and are controlled by a PLC (Programmable Logic Controller); the same devices are mounted on the left feeding rack and the right feeding rack; the device installed on the feeding rack comprises five same working units, and each working unit is composed of a swing frame mechanism fixed to the feeding rack, a mechanical unwinding mechanism, a winding mechanism, a feeding trolley, a storage tank, a conveying roller track driven by a variable frequency motor and a width adjusting and centering mechanism of a m