Yarn fast sizing device

Abstract

The invention provides a yarn fast sizing device which comprises a warp beam, a splitting device, a sizing chamber, a drying room and the head. Sheet yarn on the warp beam is split by the splitting device and enters the sizing chamber, yarn sizing evenness is guaranteed, certain sizing rate is achieved, and sized yarn adhesion is avoided during drying of sized yarn. The sizing chamber comprises a size tank and size nozzles distributed evenly and vertically. A size recovery hole is formed in the lower portion of the sizing chamber, unused size can return to the size tank through the size recovery hole, and size recycling is guaranteed. The drying chamber comprises an infrared heating device, an air supplying pipe and a yarn guiding roller and can dry the sized yarn fast. The head comprises the yarn guiding roller, a tension roller, a live axle, a power mechanism, a control mechanism and an expansion reed. The head is used for collecting the sized yarn and providing power and conducting transmission control in a whole sizing process. The yarn fast sizing device has the advantage that a traditional sizing mode of soaking is changed, size film-forming property is good, sizing performance is stable, and energy is greatly saved.

Description

technical field [0001] The invention relates to a textile production equipment, in particular to a rapid yarn sizing equipment. Background technique [0002] Sizing is a key process in weaving engineering. The purpose of sizing is to form a protective film on the yarn, improve the wear resistance of the yarn, reduce hairiness, increase the strength of the yarn appropriately, and reduce the elongation to withstand the yarn. The complex mechanical action ability of the thread in the weaving process improves the weaving performance of the yarn. For more than half a century, domestic and foreign textile and chemical experts have worked together to adopt various methods (such as heat treatment of chemical fiber yarn, special chemical reagents or lubricants, and lubrication treatment on the surface of the yarn, etc.) to eliminate the sizing process in order to It solves the consumption of a large amount of resources due to sizing and the environmental pollution caused by printing...

AI Technical Summary

Problems solved by technology

[0003] This sizing method has the following defects: 1. The yarn must be impregnated by the submerged roll and the press roll, especially in the promotion of "two highs and one low" (high Size concentration, high pressure size force, low size size viscosity) under the sizing process environment, the pressure of the pressure roller is as high as 50kN. At this time, the yarn structure will be obviously damaged, the fiber will slip, and the frictional cohesion between the fibers after desizing At the same time, because the size liquid is immersed in the yarn, the subsequent desizing pressure is relatively high, which will cause secondary damage to the yarn structure, and finally affect the durability of the fabric

For these types of sizing, the film is brittle and hard, especially starch sizing. Although it has good film-forming property and high strength of the size film, the size film is brittle and hard, with small elongation, and the size film is easy to fall off. Fiber (such as polyester) has poor adhesion, high viscosity and poor stability after pulping, and the viscosity of the slurry changes greatly after a long period of time, which affects the quality of sizing

Through the size soaked into the gap between the fibers inside the yarn, the fibers are relatively cohesive, which increases the cohesion between the fibers and improves the breaking strength of the yarn, but consumes a large amount of size, and subsequent desizing is difficult and consumes energy. big

4. When using pure PVA or a large proportion of PVA for sizing, the sizing tends to stick together after dipping. If it is directly dried, it will be difficult to separate later, so it is necessary to perform wet splitting. Yarn splitting often occurs, resulting in sizing hairiness greater than original yarn hairiness

5. PVA sizing is extremely difficult to degrade and causes environmental pollution. The price of acrylic sizing is relatively high. The development of starch derivative sizing and other sizing that can be used for yarn sizing will gradually replace PVA. These sizings have rapid growth film, high strength and low elongation, and good water solubility for easy recycling, etc. Traditional sizing equipment and methods are no longer suitable for sizing some new types of sizing

6. After the sized sizing yarn passes through the pressure roller, most of the sizing material will remain inside the yarn, and the water will be pressed out. Therefore, the concentration of the sizing liquid in the original sizing tank becomes smaller, resulting in the sizing rate of the front and rear sizing yarns. Different, in the subsequent weaving process, the strength and elongation of the sizing are different, which affects the integrity and quality of the final fabric

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