Regenerated cellulose fiber continuous spinning interlaced yarn production equipment

Abstract

The invention relates to the technical field of regenerated cellulose fiber production equipment, in particular to regenerated cellulose fiber continuous spinning interlaced yarn production equipment which comprises a spinning mechanism, the spinning mechanism is connected with an interlacing mechanism, and the interlacing mechanism is connected with a winding mechanism; a nozzle is arranged in the network mechanism, and filaments pass through a channel of the nozzle; the nozzle is connected with compressed air, the compressed air can be sprayed out through the nozzle, the compressed air forms disordered high-pressure jet airflow in a channel of the nozzle, and the filaments passing through the channel of the nozzle are jetted, so that the filaments periodically generate disordered rotation and are wound into nodes at intervals to form an interlaced yarn structure; according to the invention, filaments with a network structure can be produced, a sizing process can be omitted, a desizing process during dyeing can also be omitted, environmental pollution is reduced, the production cost is reduced, the energy consumption is reduced, the production efficiency is increased, the dyeing performance of the fabric is improved, and the product quality is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of regenerated cellulose fiber production equipment, in particular to a regenerated cellulose fiber continuous spinning network yarn production equipment. Background Art

[0002] Regenerated cellulose fiber is made from natural cellulose, which is made into cellulose xanthate after impregnation, aging, and xanthation, and then dissolved in dilute alkali solution to make viscose, and then filtered, defoamed, spun and other processes to make regenerated cellulose fiber; the currently commonly used continuous spinning production method of regenerated cellulose fiber firstly makes the raw pulp undergo chemical and physical processing steps such as impregnation, pressing, crushing, aging, xanthation, and dissolution to make viscose stock solution, and then sprays the viscose stock solution into an acid bath through the nozzle of the spinneret, and regenerates cellulose into solid filaments through chemical reactions; after the primary regenerated cellulose fiber goes through the steps of coagulation, washing, oiling and sizing, drying and other steps, it can be wound into a tube to complete the processing.

[0003] The existing continuous spinning process of regenerated cellulose fibers requires a sizing process to increase the cohesion of the filaments so as to meet the subsequent processing and weaving requirements. However, the sizing process requires high-temperature dissolution of the slurry, which must then be cooled to room temperature before use, which adds additional costs for purchasing slurry and making slurry to the production process. At the same time, before dyeing the cloth, downstream customers need to perform high-temperature desizing on the cloth to prevent the slurry on the filaments from affecting the coloring of the fiber, which consumes a large amount of steam and adds additional processes and costs. In addition, most of the slurries currently used are synthetic slurries, which are polluting to the environment. As people's environmental awareness increases, regenerated cellulose fibers that do not require sizing are more environmentally friendly and can better meet the needs of the new era. Summary of the invention

[0004] The object of the present invention is to provide a production device for continuously spinning network yarn of regenerated cellulose fiber which can avoid the sizing process and maintain the fiber cohesion.

[0005] Based on the above purpose, the present invention adopts the following technical solution: A regenerated cellulose fiber continuous spinning network yarn production equipment, including a spinning mechanism connected to a yarn forming mechanism, the spinning mechanism is connected to a network mechanism, and the network mechanism is connected to a winding mechanism; the spinning mechanism includes a pair of columns, on which a spinning roller and a spinning drum body are arranged through a suspension arm, the front end of the spinning drum body is a spinning part, and the rear end is a drying part; the yarns produced by the yarn forming mechanism pass through the spinning mechanism and the network mechanism in turn, and are wound on a winding device; the network mechanism includes a nozzle, and a compressed air mechanism is arranged in cooperation with the nozzle.

[0006] Preferably, a plurality of spinning rollers are provided, a plurality of network mechanisms are provided one-to-one corresponding to the plurality of spinning rollers, and a plurality of winding devices are provided one-to-one corresponding to the plurality of network mechanisms.

[0007] Preferably, the compressed air mechanism comprises a compressed air pipe, which is connected to an air compressor; an air distribution and pressure stabilizing package is connected to the compressed air pipe, and the air distribution and pressure stabilizing package is respectively connected to the nozzles of multiple network mechanisms.

[0008] Preferably, the compressed air pipe is connected to the gas distribution and pressure stabilizing package through a branch pipe, and a ball valve is provided on the branch pipe; a pressure gauge is provided on the compressed air pipe, and an air storage tank is provided between the compressed air pipe and the air compressor.

[0009] Preferably, the air outlet of the air storage tank is connected to the network mechanism through a compressed air pipe; the air inlet of the air storage tank is connected to a pressure reducing valve through a compressed air pipe, the pressure reducing valve is connected to a stop valve through the compressed air pipe, and the stop valve is connected to the air compressor through the compressed air pipe.

[0010] Preferably, a pressure stabilizing device is provided in the gas separation pressure stabilizing package, and the pressure stabilizing device is connected to the nozzles one by one through pipelines.

[0011] Preferably, the diameter of the nozzle hole is 1-5 mm, and the output gas pressure of the pressure stabilizing device is 0.02-0.3 MPa.

[0012] Preferably, the winding device comprises a drum, and a wire guide is arranged in cooperation with the drum.

[0013] The beneficial effects of the present invention are: The present invention eliminates the sizing mechanism in the traditional regenerated cellulose fiber continuous spinning equipment, and adds a network mechanism, through which the silk strips can be network-treated; the silk strips after the network treatment form a network structure at a certain interval, which can effectively increase the overall cohesion of the silk strips and meet the user's use needs; since the sizing process is omitted, the desizing process during dyeing can also be exempted, which not only reduces environmental pollution, reduces production costs, reduces energy consumption, and increases production efficiency, but also can improve the dyeing performance of the fabric, thereby effectively improving product quality.

[0014] The present invention designs a network mechanism to make the silk strips produce a network structure. The network mechanism sprays compressed air through a nozzle connected to a compressed air pipeline. The compressed air forms a turbulent high-pressure jet airflow in the nozzle channel, and sprays the silk strips passing through the nozzle channel, so that the silk strips are irregularly loosened periodically. The single fibers in the silk strips are rotated and twisted, and intertwined with each other, forming periodic network knots on the silk strips. The silk strips are not easy to be loosened again at the network knot positions. Even if the silk strips become loose, they will not spread due to the existence of the network knots. Even without going through the sizing process, the silk strips can have sufficient cohesive force.

[0015] The present invention can be directly applied to existing regenerated cellulose fiber continuous spinning equipment without the need to design and produce new equipment. It only needs to set up a network mechanism and connect a compressed air pipe to put it into production and use. Through multiple pressure reductions by a pressure reducing valve and a pressure stabilizing device, the high-pressure compressed air can be reduced to between 0.02 and 0.3 MPa, and a suitable air pressure value can be selected according to the fineness of the filaments to avoid the network structure being not formed and the network knots being long and uneven due to too low air pressure, or the filaments being blown into defective products such as woolen threads due to too high air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a comparison diagram between the network yarn structure of the present invention and the common yarn structure.

[0017] In the figure: a column 1; a hanging arm 11; a small spinning roller 12; a spinning drum body 13; a network mechanism 2; a compressed air pipe 21; an air distribution and pressure stabilizing package 22; a ball valve 23; a pressure gauge 24; a pressure reducing valve 25; a stop valve 26; a winding mechanism 3; and a silk strip 4. DETAILED DESCRIPTION

[0018] Example 1 The following is a further explanation of the present invention in conjunction with specific embodiments. Figure 1 The present embodiment is a device for producing network yarns of regenerated cellulose fibers through continuous spinning, which can be used to produce regenerated cellulose fiber yarns with a network yarn structure; it includes a yarn forming mechanism for spraying viscose stock solution into an acid bath through the spray hole of a spinneret, and the viscose stock solution regenerates cellulose into solid primary yarns 4 through chemical reactions in the acid bath.

[0019] The filament forming mechanism is connected to the spinning mechanism, which includes a pair of columns 1, a pair of suspension arms 11 are arranged on the top of the pair of columns 1, and a spinning drum body 13 and a plurality of spinning rollers 12 are arranged between the pair of suspension arms 11; the primary filaments 4 made by the filament forming mechanism are wound around the spinning drum body 13 and a single spinning roller 12, undergo coagulation, washing, oiling and drying processes on the spinning drum body 13 and the spinning roller 12, and then enter the networking process after being separated by the spinning roller 12; in this embodiment, a total of four spinning rollers 12 are arranged, that is, four filaments 4 can be subjected to coagulation, washing, oiling, drying, networking, winding and other processes at the same time.

[0020] The network mechanism 2 includes four nozzles, which are connected to the gas distribution and pressure stabilizing package 22 through compressed air branches, so that compressed air can be provided to the nozzles, and compressed air is ejected through the nozzles to generate a network structure on the filaments 4; the filaments 4 pass through the nozzle channel, and when the nozzle ejects air, the compressed air forms a turbulent high-pressure jet airflow in the nozzle channel, which sprays the filaments passing through the nozzle channel, so that the filaments periodically rotate randomly and intertwine into nodes at intervals, so that a network knot can be generated at intervals on the filaments 4.

[0021] A branch pipe is provided on the compressed air pipe 21, which is connected to the nozzle through the branch pipe. Multiple branch pipes can be provided on one compressed air pipe 21 to supply air to multiple spinning equipment at the same time; a gas dividing and pressure stabilizing package 22 is provided on the branch pipe, and four pressure stabilizing devices are provided on the gas dividing and pressure stabilizing package 22; the branch pipe is split in the gas dividing and pressure stabilizing package 22, and after being divided into four branch pipes, they are all connected to each nozzle through a pressure stabilizing device; the pressure stabilizing device can be used to adjust the gas pressure sprayed from the nozzle to avoid excessive or insufficient air pressure that causes the network knot to fail to form normally; a ball valve 23 is provided on the branch pipe, which is used to separately control the air supply of a single group of network mechanisms 2; a pressure gauge 24 is provided on the compressed air pipe 21, which is used to detect the gas pressure in the compressed air pipe 21.

[0022] The other end of the compressed air pipe 21 is connected to an air tank, the air outlet of the air tank is connected to the compressed air pipe 21, and the air inlet is connected to the air compressor through a pipeline to obtain compressed air; a pressure reducing valve 25 and a stop valve 26 are also arranged between the air tank and the air compressor. The pressure of the compressed air can be reduced by the pressure reducing valve 25, and the pressure of the compressed air can be controlled within an appropriate range in cooperation with the pressure stabilizing device; the stop valve 26 is used to control the opening and closing of the entire air supply system.

[0023] In actual use of this embodiment, the primary filaments 4 generated by the filament forming mechanism are first wound around the spinning drum 13 and the single spinning roller 12 of the spinning mechanism, and undergo coagulation, washing, oiling and drying processes on the spinning drum 13 and the spinning roller 12; then, multiple filaments 4 are separated by multiple spinning rollers 12, and then enter the network mechanism 2 for the network process; the four separated filaments pass through the corridors of four nozzles respectively, and the nozzles spray compressed air under the control of the voltage stabilizing device, so that a network knot is generated at every interval of the filaments 4; the filaments after the network process enter the winding mechanism 3 and can be wound into a tube; the specific structures of the filament forming mechanism, the spinning mechanism, the winding mechanism and other mechanisms can refer to the existing technology.

[0024] Example 2 The present embodiment is a method for producing fiber filaments using the equipment of embodiment 1, comprising the following steps: first, the raw pulp is subjected to processes such as impregnation, pressing, crushing, aging, yellowing, dissolving, degassing, and filtering to prepare a viscose stock solution; the viscose stock solution is sprayed into an acid bath through a spinneret, the main components of the acid bath are sulfuric acid, sodium sulfate, and zinc sulfate, and the viscose stock solution reacts with the acid bath to form primary filaments; the primary filaments continue to undergo a coagulation reaction in the coagulation zone of the spinning mechanism to completely form cellulose fibers, enter the washing zone and wash the filaments with desalted water at 40 to 50° C. to make them neutral, enter the oiling zone and use a special oil for continuous spinning to oil the fibers, enter the drying zone and dry them on a spinning drum 13 to form fibers with a moisture regain of 9 to 15%, and then enter the networking process; the filaments are jetted through a nozzle to produce a network knot, and the air pressure of the air sprayed from the nozzle is controlled by a voltage stabilizer to be within a qualified range; and then the filaments enter the winding mechanism and are wound into a tube.

[0025] In this embodiment, the fiber variety specification is 55.6dtex / 24F, the spinning line speed is 180m / min, the nozzle hole diameter is 1.0mm, the compressed air pressure is 0.02MPa, the length of adjacent network knots of the produced silk strips is between 30-60cm, and the finished product has a dry breaking strength of 1.85CN / dtex and a dry breaking elongation of 14.6%.

[0026] Example 3 The difference between this embodiment and embodiment 2 is that, in this embodiment, the fiber variety specification is 55.6dtex / 24F, the spinning line speed is 180m / min, the nozzle hole diameter is 1.0mm, the compressed air pressure is 0.04MPa, the length of adjacent network knots of the produced silk strips is between 10-15cm, the finished product dry breaking strength is 1.81CN / dtex, and the dry breaking elongation is 15.6%.

[0027] Example 4 The difference between this embodiment and embodiment 3 is that, in this embodiment, the fiber variety specification is 83.3dtex / 24F, the spinning line speed is 180m / min, the nozzle hole diameter is 1.2mm, the compressed air pressure is 0.02MPa, the length of adjacent network knots of the produced silk strips is between 20-60cm, the finished product dry breaking strength is 1.90CN / dtex, and the dry breaking elongation is 14.2%.

[0028] Example 5 The difference between this embodiment and embodiment 4 is that, in this embodiment, the fiber variety specification is 83.3dtex / 38F, the spinning line speed is 180m / min, the nozzle hole diameter is 1.2mm, the compressed air pressure is 0.04MPa, the length of adjacent network knots of the produced silk strips is between 10-15cm, the finished product dry breaking strength is 1.87CN / dtex, and the dry breaking elongation is 13.7%.

[0029] Example 6 The difference between this embodiment and embodiment 5 is that, in this embodiment, the fiber variety specification is 111.1dtex / 38F, the spinning line speed is 180m / min, the nozzle hole diameter is 1.4mm, the compressed air pressure is 0.06MPa, the length of adjacent network knots of the produced silk strips is between 10-20cm, the finished product dry breaking strength is 1.79CN / dtex, and the dry breaking elongation is 15.3%.

[0030] Example 7 The difference between this embodiment and embodiment 6 is that, in this embodiment, the fiber variety specification is 133.3dtex / 30F, the spinning line speed is 180m / min, the nozzle hole diameter is 1.6mm, the compressed air pressure is 0.08MPa, the length of adjacent network knots of the produced silk strips is between 10-30cm, the finished product dry breaking strength is 1.85CN / dtex, and the dry breaking elongation is 14.6%.

[0031] Example 8 The difference between this embodiment and embodiment 7 is that, in this embodiment, the fiber variety specification is 166.7dtex / 44F, the spinning line speed is 146m / min, the nozzle hole diameter is 2.5mm, the compressed air pressure is 0.10MPa, the length of adjacent network knots of the produced silk strips is between 20-50cm, the finished product dry breaking strength is 1.80CN / dtex, and the dry breaking elongation is 15.8%.

[0032] Example 9 The difference between this embodiment and embodiment 8 is that, in this embodiment, the fiber variety specification is 333.3dtex / 60F, the spinning line speed is 115m / min, the nozzle hole diameter is 3.3mm, the compressed air pressure is 0.20MPa, the length of adjacent network knots of the produced silk strips is between 30-80cm, the finished product dry breaking strength is 1.76CN / dtex, and the dry breaking elongation is 17.5%.

[0033] Table 1. Wire performance data Example Variety specifications Spinning speed m / min Spray hole diameter mm Compressed air pressure MPa Network knot length cm Dry breaking strength CN / dtex Dry elongation at break % Example 2 55.6dtex / 24F 180 1.0 0.02 30-60 1.85 14.6 Example 3 55.6dtex / 24F 180 1.0 0.04 15-20 1.81 15.6 Example 4 83.3dtex / 24F 180 1.2 0.02 20-60 1.90 14.2 Example 5 83.3dtex / 38F 180 1.2 0.04 10-15 1.87 13.7 Example 6 111.1dtex / 38F 180 1.4 0.06 10-20 1.79 15.3 Example 7 133.3dtex / 30F 180 1.6 0.08 10-30 1.85 14.6 Example 8 166.7dtex / 44F 146 2.5 0.10 20-50 1.80 15.8 Example 9 333.3dtex / 60F 115 3.3 0.20 30-80 1.76 17.5 It can be seen from Table 1 that for fiber strands of different types and specifications, by adjusting the nozzle diameter and compressed air pressure, an effective network structure can be generated, so that the strands have sufficient physical properties such as dry breaking strength and dry breaking elongation; at the same time, due to the particularity of the network structure, when the strands are scraped apart, the entire strand will not be scattered, but will only be scattered within a length between two network nodes, such as Figure 2 As shown; this can effectively prevent the silk threads from being scattered and improve the quality of the silk threads.

[0034] The above description is only a further explanation of the present invention in combination with specific embodiments. All descriptions do not limit the scope of protection of the present invention. Any changes or replacement schemes that can be easily thought of by any technician in this field within the technical scope disclosed by the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A regenerated cellulose fiber continuous spinning network yarn production equipment, comprising a spinning mechanism connected to a yarn forming mechanism, characterized in that: The spinning mechanism is connected to a network mechanism, and the network mechanism is connected to a winding mechanism; the spinning mechanism includes a pair of columns, on which a small spinning roller and a spinning drum body are arranged through a hanging arm, the front end of the spinning drum body is a spinning part, and the rear end is a drying part; the filaments produced by the filament forming mechanism pass through the spinning mechanism and the network mechanism in turn, and are wound on the winding device; the network mechanism includes a nozzle, and a compressed air mechanism is arranged in cooperation with the nozzle.

2. The regenerated cellulose fiber continuous spinning network yarn production equipment according to claim 1, characterized in that: There are a plurality of small spinning rollers, a plurality of network mechanisms are arranged one-to-one corresponding to the plurality of small spinning rollers, and a plurality of winding devices are arranged one-to-one corresponding to the plurality of network mechanisms.

3. The regenerated cellulose fiber continuous spinning network yarn production equipment according to claim 2, characterized in that: The compressed air mechanism comprises a compressed air pipe, which is connected to an air compressor; an air distribution and pressure stabilizing bag is connected to the compressed air pipe, and the air distribution and pressure stabilizing bag is respectively connected to the nozzles of multiple network mechanisms.

4. The regenerated cellulose fiber continuous spinning network yarn production equipment according to claim 3, characterized in that: The compressed air pipe is connected to the gas distribution and pressure stabilizing package through a branch pipe, and a ball valve is arranged on the branch pipe; a pressure gauge is arranged on the compressed air pipe, and an air storage tank is arranged between the compressed air pipe and the air compressor.

5. The regenerated cellulose fiber continuous spinning network yarn production equipment according to claim 4, characterized in that: The air outlet of the air storage tank is connected to the network mechanism through a compressed air pipe; the air inlet of the air storage tank is connected to a pressure reducing valve through a compressed air pipe, the pressure reducing valve is connected to a stop valve through a compressed air pipe, and the stop valve is connected to the air compressor through the compressed air pipe.

6. The regenerated cellulose fiber continuous spinning network yarn production equipment according to claim 5, characterized in that: A pressure stabilizing device is arranged in the gas separation and pressure stabilizing package, and the pressure stabilizing device is connected to the nozzles one by one through pipelines.

7. The regenerated cellulose fiber continuous spinning network yarn production equipment according to claim 6, characterized in that: The diameter of the nozzle hole is 1-5 mm, and the output gas pressure of the pressure stabilizing device is 0.02-0.3 MPa.

8. The regenerated cellulose fiber continuous spinning network yarn production equipment according to claim 7, characterized in that: The winding device comprises a reel, and a wire guide is arranged in cooperation with the reel.

Images