Suitable for spinning process of spinning machine with external winding device

Abstract

The invention relates to a spinning process suitable for a novel spinning machine with an external winding device. The process includes viscose metering and glue supply, pre-spinning filtration, filament forming, spinning and winding. The present invention is aimed at a new type of spinning machine with a specific external winding device. Under the interaction of each process and the control of process parameters, the filament can be wound into a wet state that can be directly used for twisting in the external winding device. The cake-packed yarn, and / or wet packaged yarn, and / or wet twisted yarn, or the sliver is directly processed into a finished embroidery thread by a twisting machine after being heated and dried in the spinning process. The invention can ensure that the spinning machine can achieve high spinning speed while ensuring product quality, especially the filaments will not be polluted by water washing to remove acid and oil dripping in the final winding forming process, ensuring subsequent The dyeing process is more convenient for workers, equipment maintenance is easier, and energy consumption is reduced, which makes the product cost greatly reduced while effectively improving production efficiency.

Description

technical field [0001] The invention relates to the technical field of viscose filament spinning production, in particular to a spinning process suitable for a novel 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 visc...

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 is integrated with drafting, washing The structure of deacidification, drying and oiling makes the structure of the single spinning roll of the whole machine complicated and increases the energy consumption

[0031] In summary, the winding device of the existing semi-continuous spinning machine is 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. solution pollution; and the existing continuous spinning machine in order to finally obtain a tube of dry yarn, a single spinning roll is integrated with structures such as de-drawing, water washing to remove acid, drying and oiling, so that the whole machine Complex structure, increased energy consumption

[0032] Therefore, the new spinning machine that is suitable for the external winding device, which is improved in view of the above problems, the existing process control will not be able to meet the requirements for increasing the spinning speed, nor can it meet the requirements for directly winding into cakes, and / or technical requirements for changes in varieties or specifications brought about by single control of wet packaged yarn and / or wet skeined yarn

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