A biomimetic solvent method spinning nozzle

Abstract

The application provides a bionic solvent spinning nozzle plate and relates to the technical field of fiber processing equipment. The bionic solvent spinning nozzle plate comprises a fixing ring, the bottom of the fixing ring is fixedly connected with a yarn groove, the surface of the yarn groove is provided with a spinning port, the spinning port comprises a fine hole and a coarse hole, the number of the fine holes is three to ten, the number of the coarse hole is one, the fine holes are uniformly distributed around the coarse hole, the hole channel of the fine hole is counterclockwise and surrounds the coarse hole, the hole diameter of the fine hole gradually decreases from top to bottom, the spinning port is provided with multiple groups and is uniformly distributed on the surface of the yarn groove, the upper surface of the fixing ring is provided with a positioning hole at each corner, and the positioning hole is a threaded hole. The bionic nozzle plate is designed by referring to the spider spinning design, the extruded silk thread is wound around the coarse silk to increase the strength and toughness, the preliminary twisting effect is achieved, the broken silk in the silk forming process is reduced, and the long silk is more easily spun.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fiber processing equipment, in particular to a bionic solvent spinning nozzle plate. BACKGROUND

[0002] Lyocell fiber is widely used in medical and health, fabric, industry, automobile and other fields due to its excellent performance. Compared with other fibers, the raw material used by Lyocell fiber is closer to nature, and the texture is softer and more comfortable to the human body. At present, the preparation of Lyocell is mainly NMMO solvent spinning, and NMMO solvent spinning is divided into dry spinning and wet spinning. NMMO solvent spinning of Lyocell fiber is to dissolve plant fiber pulp into spinning solution by using NMMO solvent, then extrude from the spinning nozzle plate under pressure, enter the coagulation bath for coagulation, and then go through subsequent processes such as washing, winding and stretching. The shape of the spinning nozzle plate will affect the surface and shape of the final yarn in the whole spinning process.

[0003] The most critical structural features of the spinning nozzle plate include the plate structure and the discharge hole structure, but the plate type and the discharge hole structure of the existing spinning nozzle plate are relatively single. The discharge holes on the existing spinning nozzle plate mainly include ordinary circular shape, and one-shaped, cross-shaped, C-shaped special-shaped holes, various shaped discharge holes produce different shaped yarns, and the performance of various yarns is also different.

[0004] In the prior art, through retrieval, a "spinning nozzle plate" is disclosed in Chinese patent with the application number "201220009325.2", which includes a spinning nozzle plate body, the spinning nozzle plate body is distributed with spinning holes, the bottom of the spinning hole is a "one" shaped flat hole with a cross section, and the flat hole points to the center of the spinning nozzle plate body along the length direction; but the yarn strength and toughness of the yarn extruded by the spinning nozzle plate are low;

[0005] For example, a "spinning nozzle plate" is disclosed in Chinese patent with the application number "201020157134.1", the feeding surface and the discharge surface of the spinning nozzle plate are circular, the feeding surface is provided with a plurality of feeding holes, the feeding holes are arranged in a concentric circular structure from inside to outside, and the cross section of the feeding hole is circular; the discharge surface is provided with a plurality of discharge holes, the discharge holes are arranged in a concentric circular structure from inside to outside, and the cross section of the discharge hole is T-shaped; but the yarn strength and toughness of the yarn extruded by the spinning nozzle plate are low. SUMMARY

[0006] (I) Technical problems solved

[0007] In view of the deficiencies of the prior art, the present application provides a bionic solvent spinning nozzle plate, which solves the problems of poor strength and toughness of the yarn.

[0008] (II) Technical solutions

[0009] To achieve the above object, the present application is implemented by the following technical solutions: a bionic solvent method spinning nozzle plate, comprising a fixed ring, the bottom of the fixed ring is fixedly connected with a yarn groove, a spinning orifice is formed on the surface of the yarn groove, the spinning orifice comprises a fine hole and a coarse hole;

[0010] The number of the fine holes is three to ten, the number of the coarse hole is one, the fine holes are uniformly distributed around the coarse hole, the hole channel of the fine hole is inclined clockwise and surrounds the coarse hole, and the hole diameter of the fine hole gradually decreases from top to bottom.

[0011] Preferably, the spinning orifice is provided with multiple groups, and is uniformly distributed on the surface of the yarn groove.

[0012] Preferably, the upper surface of the fixed ring is provided with a positioning hole at each corner.

[0013] Preferably, the positioning hole is a threaded hole.

[0014] Preferably, the upper hole diameter of the fine hole is 0.05-0.08mm, and the lower hole diameter of the fine hole is 0.03-0.05mm.

[0015] Preferably, the upper hole diameter of the fine hole is 0.06mm, and the lower hole diameter of the fine hole is 0.04mm.

[0016] Preferably, the hole diameter of the coarse hole is 0.07-0.09mm.

[0017] Preferably, the hole diameter of the coarse hole is 0.08mm.

[0018] Preferably, the number of the fine holes is eight.

[0019] (Three) beneficial effects

[0020] The present application provides a bionic solvent method spinning nozzle plate. The following beneficial effects are achieved:

[0021] 1. By referring to the bionic nozzle plate designed according to spider spinning, the extruded silk thread is wound around the coarse silk to increase the strength and toughness, so as to achieve the effect of preliminary twisting, reduce the broken silk during silk forming, and make it easier to spin long silk.

[0022] 2. The bionic design is realized for the NMMO solvent method spinning nozzle plate, the spinning nozzle plate forms fine silk winding around coarse silk, achieves the effect of preliminary twisting, and enhances the strength and toughness of the formed silk. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a three-dimensional schematic view of the present application;

[0024] Figure 2This is a top view of the present invention;

[0025] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A;

[0026] Figure 4 This is a three-dimensional schematic diagram of the spinneret nozzle of the present invention.

[0027] Among them, 1. Yarn groove; 2. Fixing ring; 3. Spinneret; 31. Fine hole; 32. Coarse hole; 4. Positioning hole. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figures 1-4 As shown, this embodiment of the invention provides a biomimetic solvent spinning spinneret, including a fixing ring 2. The upper surface of the fixing ring 2 has positioning holes 4 at the four corners, and the positioning holes 4 are threaded holes, which can be used with external fixing bolts to install the fixing ring 2 onto the spinning machine. The bottom of the fixing ring 2 is fixedly connected to a yarn trough 1. The dissolved spinning liquid will be squeezed into the yarn trough 1 through the screw of the spinning machine. The surface of the yarn trough 1 has a spinneret 3 for spinning. There are nine sets of spinnerets 3, which are evenly distributed on the surface of the yarn trough 1, with one set in the middle and the other three sets surrounding the middle set. The spinneret 3 includes fine holes 31 and coarse holes 32.

[0031] In the above structure, the bionic spinneret is installed on the spinning machine via the fixing ring 2. The dissolved spinning solution is extruded into the yarn trough 1 through the screw of the spinning machine. By controlling the extrusion rate of the spinning machine, the spinning solution is extruded from the spinneret 3 of the bionic spinneret to form a filament.

[0032] There are three fine holes 31 and one coarse hole 32. The three fine holes 31 are evenly distributed around the coarse hole 32. The channels of the three fine holes 31 are inclined clockwise and surround the coarse hole 32, so that the extruded filament wraps the coarse filament with the fine filament. The diameter of the fine holes 31 gradually decreases from top to bottom.

[0033] The above structure, the spinning solution is extruded from the spinneret 3 to form a silk thread, passes through the air section into the NMMO coagulation bath, the silk thread coagulates the fine silk to wrap the thick silk, the thick silk ensures the strength, and the surrounding fine silk ensures the toughness; through the bionic spinneret designed by referring to the spider spinning, the extruded silk thread is wrapped with fine silk to increase the strength and toughness, achieves the effect of preliminary twisting, reduces the broken silk in the silk forming process, and is easier to spin the filament.

[0034] In practice, the size of the spinning spinneret plate actually used can refer to the following examples.

[0035] Example two:

[0036] As shown in Figures 1-4 , the embodiment of the application provides a bionic solvent spinning spinneret, which comprises a fixed ring 2, a positioning hole 4 is arranged at each of the four corners of the upper surface of the fixed ring 2, and the positioning hole 4 is a threaded hole, which can be matched with an external fixing bolt to install the fixed ring 2 on a spinning machine, and a yarn groove 1 is fixedly connected to the bottom of the fixed ring 2, the dissolved spinning solution is extruded into the yarn groove 1 through the screw rod of the spinning machine, a spinneret 3 is arranged on the surface of the yarn groove 1 for spinning, the spinneret 3 is provided with nine groups, which are uniformly distributed on the surface of the yarn groove 1, one group is in the middle, and the other five groups are arranged around the middle group, and the spinneret 3 comprises a fine hole 31 and a thick hole 32.

[0037] The above structure, the bionic spinneret is installed on the spinning machine through the fixed ring 2, the dissolved spinning solution is extruded into the yarn groove 1 through the screw rod of the spinning machine, and the spinning solution is extruded from the spinneret 3 of the bionic spinneret through the control of the extrusion rate of the spinning machine to form a silk thread.

[0038] The number of the fine holes 31 is five, the number of the thick hole 32 is one, the five fine holes 31 are uniformly distributed around the thick hole 32, the hole channels of the five fine holes 31 are inclined clockwise and surround the thick hole 32, so that the extruded silk thread is wrapped with fine silk, and the hole diameter of the fine hole 31 gradually decreases from top to bottom.

[0039] The upper hole diameter of the fine hole 31 is 0.05 mm, the lower hole diameter of the fine hole 31 is 0.03 mm, and the hole diameter of the thick hole 32 is 0.07 mm.

[0040] The above structure, the spinning solution is extruded from the spinneret 3 to form a silk thread, passes through the air section into the NMMO coagulation bath, the silk thread coagulates the fine silk to wrap the thick silk, the thick silk ensures the strength, and the surrounding fine silk ensures the toughness; through the bionic spinneret designed by referring to the spider spinning, the extruded silk thread is wrapped with fine silk to increase the strength and toughness, achieves the effect of preliminary twisting, reduces the broken silk in the silk forming process, and is easier to spin the filament.

[0041] Example three:

[0042] As shown in Figures 1-4As shown, this embodiment of the invention provides a biomimetic solvent spinning spinneret, including a fixing ring 2. The upper surface of the fixing ring 2 has positioning holes 4 at the four corners, and the positioning holes 4 are threaded holes that can be used with external fixing bolts to install the fixing ring 2 onto the spinning machine. The bottom of the fixing ring 2 is fixedly connected to a yarn trough 1. The dissolved spinning liquid will be squeezed into the yarn trough 1 through the screw of the spinning machine. The surface of the yarn trough 1 has a spinneret 3 for spinning. There are nine sets of spinnerets 3, which are evenly distributed on the surface of the yarn trough 1, with one set in the middle and the other eight sets surrounding the middle set. The spinneret 3 includes fine holes 31 and coarse holes 32.

[0043] In the above structure, the bionic spinneret is installed on the spinning machine via the fixing ring 2. The dissolved spinning solution is extruded into the yarn trough 1 through the screw of the spinning machine. By controlling the extrusion rate of the spinning machine, the spinning solution is extruded from the spinneret 3 of the bionic spinneret to form a filament.

[0044] There are eight fine holes 31 and one coarse hole 32. The eight fine holes 31 are evenly distributed around the coarse hole 32. The channels of the eight fine holes 31 are inclined clockwise and surround the coarse hole 32, so that the extruded filament wraps around the coarse filament with fine filament. The diameter of the fine holes 31 gradually decreases from top to bottom.

[0045] The upper diameter of the fine hole 31 is 0.06 mm, the lower diameter of the fine hole 31 is 0.04 mm, and the diameter of the coarse hole 32 is 0.08 mm.

[0046] In the above structure, the spinning solution is extruded from the spinneret 3 to form a filament, which then enters the NMMO coagulation bath through the air section. The filament coagulates, with the fine filaments wrapping around the coarse filament. The coarse filament ensures strength, while the surrounding fine filaments ensure toughness. By using a biomimetic spinneret designed with reference to spider spinning, the extruded filament is wrapped with the coarse filament to increase strength and toughness, achieving a preliminary twisting effect. This reduces filament breakage during the spinning process and makes it easier to spin long filaments.

[0047] Example 4:

[0048] like Figures 1-4 As shown, this embodiment of the invention provides a biomimetic solvent spinning spinneret, including a fixing ring 2. The upper surface of the fixing ring 2 has positioning holes 4 at the four corners, and the positioning holes 4 are threaded holes, which can be used with external fixing bolts to install the fixing ring 2 onto the spinning machine. The bottom of the fixing ring 2 is fixedly connected to a yarn trough 1. The dissolved spinning liquid will be squeezed into the yarn trough 1 through the screw of the spinning machine. The surface of the yarn trough 1 has a spinneret 3 for spinning. There are nine sets of spinnerets 3, which are evenly distributed on the surface of the yarn trough 1, with one set in the middle and ten sets surrounding the middle set. The spinneret 3 includes fine holes 31 and coarse holes 32.

[0049] The bionic spinneret is installed on the spinning machine through the fixing ring 2, the dissolved spinning solution is extruded into the yarn groove 1 through the screw rod of the spinning machine, the spinning solution is extruded from the spinning port 3 of the bionic spinneret through the control of the extrusion rate of the spinning machine, and the yarn is formed.

[0050] The number of the fine holes 31 is ten, the number of the coarse hole 32 is one, the ten fine holes 31 are uniformly distributed around the coarse hole 32, the hole channels of the ten fine holes 31 are inclined clockwise and surround the coarse hole 32, and the extruded yarn is wound with fine filaments around the coarse filament.

[0051] The upper diameter of the fine hole 31 is 0.08 mm, the lower diameter of the fine hole 31 is 0.05 mm, and the diameter of the coarse hole 32 is 0.09 mm.

[0052] The structure is that the yarn is formed after the spinning solution is extruded from the spinning port 3, enters the NMMO coagulation bath through the air section, the yarn is coagulated with fine filaments wound around the coarse filament, the coarse filament guarantees the strength, and the surrounding fine filaments guarantee the toughness; the bionic spinneret designed by referring to the spider spinning is used, the extruded yarn is wound with fine filaments around the coarse filament to increase the strength and toughness, the preliminary twisting effect is achieved, the broken yarn in the yarn forming process is reduced, and the long yarn is more easily spun.

[0053] Working principle: first, the bionic spinneret is installed on the spinning machine through the fixing ring 2 and the external fixing bolt, the dissolved spinning solution is extruded into the yarn groove 1 through the screw rod of the spinning machine, the spinning solution is extruded from the spinning port 3 of the bionic spinneret through the control of the extrusion rate of the spinning machine, and the yarn is formed, the spinning port 3 is nine groups, each group is composed of three to ten fine holes 31 and one coarse hole 32, the hole channel of the fine hole 31 is inclined clockwise and surrounds the coarse hole 32, so the fine filaments of each group are uniformly arranged around the coarse filament; the yarn enters the NMMO coagulation bath through the air section, the yarn is coagulated with fine filaments wound around the coarse filament, the coarse filament guarantees the strength, and the surrounding fine filaments guarantee the toughness.

[0054] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A biomimetic solvent spinning spinneret, characterized in that: Includes a fixing ring (2), the bottom of which is fixedly connected to a yarn groove (1), and the surface of the yarn groove (1) is provided with a spinneret (3), which includes a fine hole (31) and a coarse hole (32); The number of fine holes (31) is three to ten, the number of coarse holes (32) is one, the fine holes (31) are evenly distributed around the coarse hole (32), the channel of the fine holes (31) is inclined clockwise and surrounds the coarse hole (32), and the diameter of the fine holes (31) gradually decreases from top to bottom; The spinneret (3) is provided in multiple sets and is evenly distributed on the surface of the yarn groove (1); The upper diameter of the fine hole (31) is 0.05-0.08 mm, and the lower diameter of the fine hole (31) is 0.03-0.05 mm.

2. The biomimetic solvent spinning spinneret according to claim 1, characterized in that: The spinneret (3) is provided with nine sets, and the upper surface of the fixing ring (2) is provided with positioning holes (4) at the four corners. The positioning holes (4) are threaded holes.

3. The biomimetic solvent spinning spinneret according to claim 1, characterized in that: The upper diameter of the fine hole (31) is 0.06 mm, and the lower diameter of the fine hole (31) is 0.04 mm.

4. The biomimetic solvent spinning spinneret according to claim 1, characterized in that: The diameter of the coarse hole (32) is 0.07-0.09 mm.

5. A biomimetic solvent spinning spinneret according to claim 1 or 4, characterized in that: The diameter of the coarse hole (32) is 0.08 mm.

6. The biomimetic solvent spinning spinneret according to claim 1, characterized in that: The number of fine holes (31) around one of the coarse holes (32) is 8.

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