The embodiment of the invention discloses a preparation method and
system of
colored multi-strand
yarn,
computer equipment and a medium. The method comprises the steps that the target color of unit spun
yarn is obtained according to a preset pattern; coloring the unit spun
yarn based on the target color of the unit spun yarn to obtain dyed spun yarn; detecting whether the actual color of the dyed spun yarn is consistent with the target color; if yes, doubling and twisting the twisted and dyed spun yarns to obtain colorful multi-ply yarns; if not,
cutting off the dyed spun yarn, or complementing the color of the dyed spun yarn until the actual color of the dyed spun yarn meets the expectation. The target color of the unit spun yarn is obtained according to the preset pattern, whether the actual color of the dyed spun yarn obtained by
dyeing the unit spun yarn before doubling and twisting meets the expectation or not is detected, and if not, the section is
cut off or the color is complemented through spray
dyeing, so that the dyed yarn meeting the color standard requirement is always adopted for doubling and twisting in the doubling and twisting process; the color of unit spun yarn can be adjusted in real time, the color of
colored multi-plied yarn can be adjusted in real time, and the production efficiency and the qualified rate of the
colored multi-plied yarn are improved.