Spinning process suitable for spinning machine with external winding device

Abstract

The invention relates to a spinning process suitable for a spinning machine with an external winding device. The process comprises adhesive metering and supplying, filtering before spinning, silver forming, spinning and winding, wherein the moisture content of wet cake yarns or wet barrel yarns or wet twisted yarns in the winding process is 30-80%. The spinning process aims at the specific spinning machine with the external winding device, under the mutual action of all the processes and the control of process parameters, silvers can be wound into the wet cake yarns and / or the wet barrel yarns and / or the wet twisted yarns in the external winding device, the wet cake yarns, the wet barrel yarns and the wet twisted yarns can be directly used for yarn twisting, it is guaranteed that the spinning machine can reach high spinning speed, meanwhile, product quality can also be guaranteed, especially the silvers cannot be contaminated by water washing, acid liquor removal and falling oil in the winding process, a subsequent dyeing process is guaranteed, the worker operation is more convenient and easier, equipment maintenance is easier, energy consumption is lowered, production efficiency is effectively improved, and meanwhile product cost is greatly lowered.

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 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 fi...

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] To sum up, 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 formed dry filament, the spinning roller is integrated with structures such as de-drawing, water washing to remove acid, drying and oiling, which makes the structure of the whole machine complicated. Increased energy consumption and cannot obtain wet sliver with weak acidity

[0032] Therefore, the improved spinning machine suitable for the external winding device that 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 the cake-packed yarn that is directly wound into a wet state. , and / or wet packaged yarn, and / or wet skeined yarn single-control technical requirements for variety or specification changes

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