The invention discloses a chemical
fiber yarn tube
dyeing device. The device comprises a
dyeing cylinder, a cylinder cover, a
bobbin frame and a heating device; the
bobbin frame can be placed into thedyeing cylinder, the cylinder cover covers the
dyeing cylinder, and the heating device is used for heating the dyeing cylinder; the
bobbin frame comprises a
chassis, a first supporting circular rod,a second supporting circular rod, a
yarn channel
pipe, a first motor and a second motor; the bottom of the first supporting circular rod and the bottom of the second supporting circular rod are both rotatably connected with the
chassis, the top of the first supporting circular rod and the top of the second supporting circular rod both extend upwards vertically, and a
yarn pipe is sleeved with a second supporting
pipe; the yarn channel pipe is arranged between the first supporting circular rod and the second supporting circular rod; the first motor is connected with the first supporting circular rod, and the second motor is connected with the second supporting circular rod. The invention further discloses a method for using the chemical
fiber yarn tube dyeing device to achieve bobbing dyeing of
aramid yarn. The chemical
fiber yarn tube dyeing device and the method for using the chemical fiber yarn tube dyeing device to achieve bobbing dyeing of the
aramid yarn have the advantages that the mobility of the yarn in the dyeing cylinder is improved, and the contact degree between the yarn and dye is increased.