A kind of spinning process of spinning machine with external winding device

Abstract

The invention relates to a spinning technology of a spinning machine with an external winding device. The processes of the spinning technology comprise viscose metering, viscose supplying, filtering before spinning, silk strip forming, spinning and winding, wherein the moisture content of wet tube packed silk in the winding process is 30-80%. For the specific spinning machine with the external winding device, under the mutual effect of all the processes and the control of technological parameters, the purpose that the silk strips are wound into the wet tube packed silk which is directly used for twisting threads in the external winding device in an active winding mode and / or in a passive winding mode can be achieved, the fact that the spinning machine achieves high spinning speed is guaranteed, the quality of products can also be guaranteed at the same time, particularly, the silk strips can not be contaminated by dropping of water washing acid removing liquid and an oiling agent in the last winding forming process, a subsequent dyeing technology is guaranteed, operation of workers is simpler and more convenient, equipment maintaining is easier, energy consumption is lowered, and product cost is greatly lowered while the production efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of viscose filament spinning production, in particular to a spinning process of a spinning machine with an external winding device. Background technique [0002] Pure methyl cellulose is extracted from cellulose raw material, called pulp. Treat with caustic soda and carbon disulfide to obtain orange-yellow cellulose xanthate sodium, and then dissolve it in dilute sodium hydroxide solution to become viscous spinning stock solution, called viscose. After the viscose is filtered, matured and defoamed, it is wet-spun, and the coagulation bath is composed of sulfuric acid, sodium sulfate and zinc sulfate. Sodium cellulose xanthate in the viscose reacts with sulfuric acid in the coagulation bath to decompose, and the cellulose is regenerated and precipitated. The obtained cellulose fiber becomes viscose fiber after washing, desulfurization, bleaching and drying. Viscose filament is a kind of viscose fiber, which...

AI Technical Summary

Problems solved by technology

[0009] Disadvantages: low spinning speed, high post-processing costs, and increased production costs

[0012] Disadvantages: Since the silk sliver is washed and dried immediately, the strength of the sliver is low, the whiteness is low, the sliver is rough, and the quality is not as good as that of the semi-continuous spinning machine; in order to increase the sizing of the silk sliver, the sizing needs to be removed when the embroidery thread is dyed. Increase the production cost of downstream products; high quality requirements for raw materials (viscose)

[0020] 1. The above structure limits the length of the roller. The time for the viscose filament to walk on the roller is short, and the forming time of the viscose filament is short. If the spinning speed is to be increased, the reaction time of the viscose filament will inevitably be insufficient and the product quality will be reduced. , so the efficiency of the traditional semi-continuous spinning machine is reduced;

[0021] 2. In order to improve efficiency, multiple filaments are usually processed at the same time, but when multiple viscose filaments are wound on the existing spinning roller, they are easy to twist, causing the viscose filaments to break and affecting the viscose filaments. product quality;

[0023] 4. All the spinning rollers are fixed at one end, which will inevitably require an extremely complex transmission mechanism to drive the rotation of the spinning rollers, which will also lead to an increase in the failure rate, and when changing the type of silk yarn and changing the rotation speed, it is necessary to stop the machine. Then replace the gears in the transmission system, which reduces the production efficiency and increases the production cost

The above-mentioned utility model is a continuous spinning machine, which is equipped with a drying device, and the dried filaments are directly formed into a tube, and the tube forming device is located outside the drying device, but since the spinning roller integrates de-drawing, washing Structures such as deacidification, drying and oiling make the structure of the whole machine complex and increase energy consumption

[0031] In summary, the existing semi-continuous spinning machine has a winding device located below the spinning roll. Since there is water and acidic solution on the spinning roll, the winding device is easily affected by the water and acidic solution on the spinning roll. The problem of solution pollution; and the existing continuous spinning machine in order to finally obtain the dry filament in the tube, the spinning roller integrates structures such as de-drawing, water washing to remove acid, drying and oiling, which makes the structure of the whole machine complicated , increases energy consumption, and cannot obtain wet sliver with weak acidity

[0032] Therefore, the existing process control of the improved spinning machine with an external winding device for the above-mentioned problems will not be able to meet the requirements for increasing the spinning speed, nor can it meet the requirements brought by the single control of directly winding into a packaged wet yarn. Technical requirements for varieties or specification changes

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