Extruder used for sea island composite wire production

Abstract

The invention relates to the technical field of composite wire production equipment, in particular to an extruder used for sea island composite wire production. The extruder comprises a conveying shell, a conveying screw rotationally arranged in the length direction of the conveying shell and a feeding hopper arranged in the length direction of the conveying shell and communicating with the conveying shell. A stirring assembly is arranged at the position, located in a heating area, in the conveying shell. The stirring assembly comprises a stirring circular ring fixedly arranged on the outer side wall of the conveying screw, multiple stirring shafts arranged on the side, away from the feeding hopper, of the stirring circular ring and auxiliary shafts arranged on the outer side walls of thecircumferences of the stirring shafts. The extruder has the effects that the material mixing uniformity is effectively improved, the temperature differences of various positions of materials are reduced, and the material extrusion quality is improved.

Description

technical field [0001] The invention relates to the technical field of composite yarn processing equipment, in particular to an extruder used for producing sea-island composite yarns. Background technique [0002] Island-in-the-sea composite yarn means that two or more polymer fluids are formed into a composite thin flow in a sheath-core or side-by-side manner, and then they are brought together and extruded from the spinneret hole as a single-component fiber is produced to obtain Composite yarn. According to the different preparation process, it can be divided into conjugate composite spinning method and blended spinning method. Sea-island composite yarn is widely used in fashion fabrics, high-performance leather, filter materials and other fields due to its excellent properties such as beauty, comfort, heat insulation, and easy cleaning, which are difficult to achieve with ordinary fibers. [0003] Among them, the blend spinning method refers to a fiber forming method in...

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Problems solved by technology

[0006] The above-mentioned prior art has the following defects: the transportation process of the material in the screw extruder is: the screw rotates, so that the material and the inner wall of the screw extruder rely on friction to generate relative motion to move

The main transportation state of the material is horizontal transportation along the length direction of the screw extruder, and the auxiliary transportation state is the small tumbling transportation of the material itself, which leads to insufficient rotation of the material itself, which in turn leads to insufficient mixing between the materials On the one hand, it prolongs the heating time of the material and reduces the mixing uniformity of the material; on the other hand, the surface material near the inner wall of the screw extruder receives different heating intensity and time from the inner material, which makes the surface material There is a certain difference with the temperature of the inner material

However, the sea-island composite yarn belongs to ultra-fine spinning, which has high requirements on the mixing uniformity and temperature uniformity of the material. Obviously, the screw extruder in the prior art cannot optimally adapt to the material. processing, which in turn reduces the quality of the final form subsequently in the composite spin pack

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