Polyester fiber coloring device and coloring method

The invention discloses a polyester fiber coloring device and a coloring method, belongs to the technical field of polyester fiber processing, and aims to solve the problems that when polyester fibers are moved out of dyes, more dyes are moved out along with the polyester fibers, the dyes are easy to drop everywhere, the dyes are wasted, and the dyeing cost is reduced. In order to solve the problems that in the prior art, end supporting rollers are embedded in inner cavities in the upper ends of the two ends of a dyeing box respectively, an inner supporting roller set is installed in the middle of the inner cavity of the dyeing box, an electric upper push plate is installed at the bottom of the inner cavity of the dyeing box, and a control table is fixedly installed on the outer wall of the dyeing box; according to the polyester fiber drying device, multiple effects can be achieved at the same time through one driving structure, dismounting and mounting of polyester fibers are facilitated, meanwhile, the dryi