Dip dyeing device for PU knitted fabric

The utility model relates to the technical field of knitted fabric dip dyeing, in particular to a PU knitted fabric dip dyeing device which comprises a dip dyeing cylinder, a first motor, a filter plate and dyeing rollers, driving rollers are arranged on the two sides of the top end of the dip dyeing cylinder, and the first motor is fixedly installed in one side of the bottom end of the dip dyeing cylinder. And one side of the first motor is fixedly connected with a bidirectional spiral shaft. The first motor is installed on one side of the interior of the bottom end of the dip dyeing cylinder, the bidirectional spiral shaft can be driven to rotate through starting of the first motor, the first movable blocks on the two sides of the bidirectional spiral shaft move on the bidirectional spiral shaft, meanwhile, one side of each first movable block is fixedly connected with the corresponding second movable block, and the second movable blocks can move on the two sides of the bidirectional spiral shaft. A second