The invention relates to an
automatic control device and control method thereof for
optical fiber screening, which are developments of a novel
optical fiber rewinder, and before start of the
optical fiber rewinder, the up-and-down movement of a tension wheel can be realized. The
automatic control device comprises a pay-off reel, a pay-off dancing wheel, a meter counting traction wheel, a tension positioning wheel, an automatic moving device of the tension wheel, a tension traction wheel, a tension gauge, a take-up dancing wheel, a take-up reel, a
programmable logic controller and an upper computer, wherein the pay-off reel and the pay-off dancing wheel are mounted at the
fiber pay-off end, the meter counting traction wheel, the tension positioning wheel, the tension wheel and the tension traction wheel are mounted behind the pay-off dancing wheel, the automatic moving device of the tension wheel is arranged on one sides of the tension positioning wheel and the tension wheel, and the take-up dancing wheel and the pay-off reel are mounted at the
fiber pay-off end; the automatic moving device of the tension wheel comprises a guide rail, a sliding block, a lead screw, nuts, a
servo motor and a
servo driver; the upper computer is connected with the
programmable logic controller through control lines and
signal lines, and an operator can send an operation order to the
programmable logic controller through the upper computer.