Screw for chinlon spinning

The utility model relates to a screw for chinlon spinning, and belongs to the technical field of chemical fiber chinlon spinning production equipment. The screw comprises a screw handle, a feeding section, a compression section, a metering section and a mixing section, the diameter of the screw is D, and the length of the feeding section is about 4D +/-0.5 D; the length of the compression section is 12D +/-0.5 D; the length of the metering section is 6.5 D +/-0.5 D, and the groove depth H3 of the metering section is equal to (0.036-0.045) D; the length-diameter ratio L: D of the screw is 26: 1, and the compression ratio is 2.68-2.75. The utility model has the advantages that: 1, the processing and the manufacturing are convenient; 2, the screw plasticizing is good, the prepared melt is uniformly mixed, the content of bubbles in the melt is low, the spinning end breakage rate is low, and the spinning production efficiency and the fiber quality are greatly improved; 本实用新型涉及一种锦纶纺丝用螺杆，属化纤锦纶纺丝生产设备技术领域。该螺杆包括：螺杆柄部、进