A total denier adjustable filament bundle spinneret assembly

Abstract

The utility model discloses a kind of total den adjustable tow jet cap assemblies, it is related to spinning equipment technical field.The assembly includes jet cap assembly joint, jet cap support, elastic washer, adjustable opening regulator and jet cap;The opening regulator is equipped with the fan-shaped adjusting unit of installable increase and decrease, axial displacement is limited by embedding annular limiting groove, and tightly adhere using radial elastic sealing washer and baffle, realize the accurate control to the effective opening number of jet orifice;Elastic washer uses reinforced polytetrafluoroethylene material, and pressure deformation can fasten opening regulator and compensate tolerance;Baffle surface is equipped with polytetrafluoroethylene coating to prevent slurry leakage;The gap between the lower surface of fan-shaped adjusting unit and jet cap end face is less than or equal to 0.01mm, to ensure sealing performance.The utility model can flexibly adjust total den by increasing and decreasing fan-shaped adjusting unit, adapt to multi-specification tow production demand and dismounting convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of spinning equipment technology, and in particular to a yarn tow spinneret assembly with adjustable total denier. Background Technology

[0002] In the development of new tobacco materials and related textile materials, it is often necessary to use diacetate fiber tows with low total denier. For example, in special processes such as rope and pile preparation, the single denier of the tow must be consistent with that of conventional products, while the total denier must be significantly reduced. In current large-scale production, the main methods for producing tows of different specifications can be divided into two categories: one is to customize a special spinneret for each specification; the other is to fine-tune the total denier by adjusting spinning process parameters (such as spinning pressure and speed).

[0003] Furthermore, existing technologies also include designs that improve the spinneret structure itself to achieve partial adjustment functions, but these typically focus on changing the diameter of a single orifice rather than the number of orifices. For example, Chinese utility model patent CN215800067U, entitled "A Spinneret for Flash Spinning," discloses a scheme that involves superimposing an independent "spinneret adjustment component" with a smaller orifice diameter "adjustment hole" at the front end of a fixed spinneret panel (containing a fixed number of spinneret holes). This scheme changes the effective spinneret orifice diameter by replacing the adjustment component with one of different orifice diameters, thereby affecting the monofilament fineness. However, this technical solution has obvious limitations: First, its adjustment purpose is to change the diameter of a single orifice, but it cannot change the number of effective spinnerets, thus it cannot achieve a wide range of continuous adjustment of the total denier of the filament bundle; Second, its essence is to change the orifice diameter by superimposing a "throttling plate". Under high-pressure spinning conditions, this structure has extremely high requirements for sealing and component alignment accuracy. When adjusting different specifications, it is still necessary to stop the machine and replace the entire adjustment component, which does not fundamentally solve the problem of low production changeover efficiency; Third, this solution does not involve linkage control with the feeding system (such as a gear pump). Relying solely on mechanical replacement of parts, it cannot achieve precise matching and stable control of process parameters.

[0004] Therefore, existing technologies mainly suffer from the following shortcomings: 1) They rely on customized spinnerets, resulting in high costs, cumbersome specification switching processes, and low production efficiency; 2) Existing adjustable designs (such as CN215800067U) are mostly limited to orifice diameter adjustment, failing to achieve continuous and flexible control of the effective number of spinnerets without hardware replacement or only by replacing partial modules, thus making it impossible to directly and accurately adjust the total denier of the filament bundle; 3) Methods that indirectly change the total denier by adjusting process parameters sacrifice the stability of filament bundle quality. This makes existing equipment difficult to adapt to the flexible production needs of multiple varieties and small batches, increasing equipment investment and maintenance costs. This utility model aims to overcome the above defects and provide a spinning device and method that can directly and continuously adjust the effective number of spinnerets and is linked with the overall preparation device to achieve efficient and precise adjustment of the total denier. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a yarn tow spinneret assembly with adjustable total denier.

[0006] To achieve the above objectives, this utility model provides a technical solution for an adjustable total denier spinneret assembly, comprising:

[0007] Spinneret assembly connector; spinneret support connected to the spinneret assembly connector; elastic washer disposed below the spinneret assembly connector; adjustable opening adjuster located below the elastic washer;

[0008] The opening adjuster is equipped with an increaseable and decreaseable fan-shaped adjustment unit. The inner wall is provided with an annular limiting groove. The fan-shaped adjustment unit is embedded in the limiting groove, and its outer peripheral wall is in clearance fit with the groove wall to limit axial displacement.

[0009] The lower surface of the fan-shaped adjustment unit is sealed to the spinneret cap, and the spinneret cap has spinneret holes.

[0010] Furthermore, the radial side of the fan-shaped adjustment unit is provided with an elastic sealing gasket, and the gap between the lower surface and the end face of the spinneret is ≤0.01mm;

[0011] The elastic sealing gasket deforms under pressure to secure the opening adjuster, thereby achieving axial sealing and tolerance compensation.

[0012] Furthermore, the external thread of the spinneret assembly connector matches the internal thread of the spinneret support and is connected by threads.

[0013] Furthermore, the opening adjuster is provided with multiple baffles, and the fan-shaped adjustment unit is installed between the baffles.

[0014] Furthermore, the spinneret holes are evenly distributed on the spinneret cap in the θ direction within the area covered by the fan-shaped adjustment unit, and there are no spinneret holes at the connection between the baffle and the spinneret cap.

[0015] Furthermore, the surface of the spinneret is provided with a baffle groove that matches the baffle, and the baffle is embedded in the baffle groove and sealed together.

[0016] Furthermore, the surface of the baffle is coated to prevent slurry leakage and enhance sealing performance.

[0017] Furthermore, a gasket is provided between the spinneret assembly connector and the spinneret.

[0018] Furthermore, the spinneret support is a groove structure with a through hole in the center of the bottom, the spinneret hole area of ​​the spinneret is directly opposite the through hole, and the surrounding edges are tightly attached to the annular support part at the bottom of the spinneret support.

[0019] Furthermore, the spinneret orifice area of ​​the spinneret protrudes from the central through hole at the bottom of the spinneret support, forming a downward-protruding cylindrical shape, with its upper periphery tightly overlapping the annular support portion at the bottom of the spinneret support.

[0020] By adopting the above technical solution, this utility model achieves the following beneficial effects:

[0021] 1. The number of opening holes of the spinneret can be controlled by the fan-shaped adjustment unit in the opening regulator, so as to adjust the total denier of the filament bundle and adapt to the production needs of multiple specifications.

[0022] 2. The opening regulator adopts a split-type fan-shaped unit and an elastic sealing structure with a small fitting gap and is coated with polytetrafluoroethylene to effectively prevent the spinning solution from leaking and ensure the spinning quality.

[0023] 3. The sector-shaped adjustment unit is installed through the limit groove, which is convenient for disassembly and assembly and can achieve quick adjustment; the combination of elastic washers and gaskets achieves axial sealing and tolerance compensation, improving assembly reliability and service life. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the device structure of Embodiment 1 of this utility model.

[0025] Figure 2 This is a schematic diagram of the central cross-section of the spinneret assembly according to Embodiment 2 of this utility model.

[0026] Figure 3a This is a schematic diagram of the spinneret hole arrangement on the spinneret cap assembly of Embodiment 2 of this utility model.

[0027] Figure 3b This is a schematic diagram of the opening regulator structure of the spinneret assembly with 20 effective holes in Embodiment 2 of this utility model.

[0028] Figure 3c This is a schematic diagram of the opening regulator structure of the spinneret assembly with 30 effective orifices in Embodiment 2 of this utility model.

[0029] Figure 3d This is a schematic diagram of the opening regulator structure of the spinneret assembly with 60 effective orifices in Embodiment 2 of this utility model.

[0030] Figure 4 This is a schematic diagram of the spinneret hole arrangement on the spinneret cap assembly of Embodiment 3 of this utility model.

[0031] Figure 5 This is a schematic diagram of the installation position of the sector-shaped adjustment unit when the total reduction rate is 20% in Embodiment 3 of this utility model.

[0032] Figure 6 This is a schematic diagram of the installation position of the sector-shaped adjustment unit when the total reduction rate is 30% in Embodiment 3 of this utility model.

[0033] Figure 7 This is a schematic diagram of the installation position of the sector-shaped adjustment unit when the total reduction rate is 40% in Embodiment 3 of this utility model.

[0034] Figure 8 This is a schematic diagram of the installation position of the sector-shaped adjustment unit when the total reduction rate is 50% in Embodiment 3 of this utility model.

[0035] In the diagram: 1-Dissolving vessel, 2-Filtration system, 3-Gear pump, 4-Pressure sensor, 5-Spinneret assembly, 6-Channel, 7-Feeding roller, 8-Motor; 9-Spinneret assembly connector, 10-Spinneret support, 11-Gasket, 12-Elastic washer, 13-Opening adjuster, 14-Spinneret; 15-Fan-shaped adjustment unit, 16-Baffle, 17-Spinneret orifice, 18-Baffle groove. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Example 1

[0039] Example 1 provides a spinning device capable of producing multi-denier filament bundles, such as... Figure 1 As shown, it includes: a dissolving vessel 1, a filtration system 2, a gear pump 3, a pressure sensor 4, a spinneret assembly 5, a channel 6, a feed roller 7, and a motor 8.

[0040] The dissolving vessel 1 is connected to the filtration system 2 via a pipe. The outlet of the filtration system 2 is connected to the gear pump 3 via a feed pipe. The outlet of the gear pump 3 is connected to the spinneret assembly 5 via a conveying pipe. A pressure sensor 4 is installed on the conveying pipe. The spinneret assembly 5 is located in the channel 6. A wire feeding roller 7 is also installed in the channel 6. The wire feeding roller 7 is connected to the motor 8.

[0041] like Figure 2As shown, the spinneret assembly 5 includes a spinneret assembly connector 9, a spinneret support 10, a gasket 11, an elastic washer 12, an opening adjuster 13, and a spinneret 14.

[0042] The external thread of the spinneret assembly connector 9 matches the internal thread of the spinneret support 10 and is connected by threads. Its lower end face presses the gasket 11 and the elastic washer 12 in sequence. The opening adjuster 13 is located below the elastic washer 12. The elastic washer 12 deforms under pressure, tightening the opening adjuster 13 to achieve axial sealing and tolerance compensation. The radial side of the opening adjuster 13 is provided with an elastic sealing gasket, and the gap between the lower surface and the end face of the spinneret 14 is no greater than 0.01mm. There are 60 spinneret holes 17 on the spinneret 14, and the spinneret holes 17 are evenly distributed on the spinneret 14.

[0043] Example 1 also provides a method for preparing diacetate fiber tow with adjustable total denier using the apparatus described in Example 1. The spinneret assembly does not include a fan-shaped adjustment unit (all spinnerets are open, totaling 60 spinnerets), and the rated speed n0 of the gear pump is set to 150 rpm. The method includes the following steps:

[0044] 1. Dissolving and preparing the slurry: Add 5 kg of cellulose diacetate flakes (acetyl content 55%) to the dissolving kettle, add 20 L of acetone solvent, set the dissolving temperature to 55℃ and the stirring speed to 300 rpm, and continue stirring for 2 hours until the cellulose diacetate flakes are completely dissolved to obtain a uniform spinning slurry.

[0045] 2. Filtration and delivery: After impurities are removed by the filtration system (filtration accuracy 5μm, filtration pressure 0.3MPa), the slurry is delivered to the spinneret assembly by a gear pump at a speed of 150rpm. The pressure sensor of the delivery pipe shows a pressure of 1.2MPa.

[0046] 3. Spinning and traction: The slurry is extruded through the spinneret to form filaments, which are then cooled and solidified in a tunnel (temperature 25℃, humidity 60%) to obtain diacetate fiber bundles.

[0047] Example 2

[0048] Example 2 provides a spinneret assembly with adjustable total denier. Unlike the spinneret assembly in Example 1, the spinneret support 10 in Example 2 has a groove structure with a through hole in the center of the bottom. The spinneret hole area of ​​the spinneret 14 is directly opposite the through hole. The spinneret hole area of ​​the spinneret 14 protrudes from the through hole in the center of the bottom of the spinneret support 10 and is in the shape of a downward protruding cylinder. Its upper periphery is tightly attached to the annular support part at the bottom of the spinneret support 10.

[0049] Unlike the spinneret assembly in Example 1, such as Figures 3b-3dAs shown, in Embodiment 2, a fan-shaped adjustment unit 15 is installed inside the opening adjuster 13 of the spinneret assembly, and multiple baffles 16 are provided inside the opening adjuster 13. The surface of the spinneret 14 is provided with a baffle groove 18 that matches the baffle 16. The baffle 16 is embedded in the baffle groove 18 and sealed. The fan-shaped adjustment unit 15 can be installed between the baffles 16. The number of small holes that can pass through the spinneret 17 can be controlled by increasing or decreasing the number of fan-shaped adjustment units 15, so as to control the number of filament bundles.

[0050] The radial side of the fan-shaped adjustment unit 15 is provided with an elastic sealing gasket, and the gap between the lower surface and the end face of the spinneret 14 is no greater than 0.01 mm. The baffle 16 has a polytetrafluoroethylene coating to prevent slurry leakage and facilitate sealing. The number of opening holes of the spinneret 14 can be controlled by the fan-shaped adjustment unit 15 in the opening regulator 13, so as to adjust the total denier of the filament bundle and adapt to the production needs of multiple specifications.

[0051] The inner wall of the opening adjuster 13 is provided with an annular limiting groove, and the sector-shaped adjusting unit 15 is embedded in the limiting groove. Its outer peripheral wall is in clearance fit with the groove wall to limit axial displacement. The opening adjuster 13 adopts a split sector-shaped unit and elastic sealing structure with small fitting clearance and is coated with polytetrafluoroethylene to effectively prevent spinning solution leakage and ensure spinning quality. The sector-shaped adjusting unit 15 is installed through the limiting groove, which is convenient for disassembly and assembly and can achieve quick adjustment. The combination of the elastic washer 12 and the gasket 11 achieves axial sealing and tolerance compensation, improving assembly reliability and service life.

[0052] like Figure 3b As shown, the spinneret 14 has spinneret holes 17, which are evenly distributed on the spinneret 14 in the direction θ on the area covered by the fan-shaped adjustment unit 15. The part where the baffle 16 is connected to the spinneret 14 does not have the spinneret holes 17.

[0053] The spinneret assembly in Example 2 replaces the spinneret assembly in Example 1. Combined with the synchronous adjustment of the gear pump speed described in the device of Example 1, the flow rate of the spinning solution can be precisely controlled. It is suitable for spinning processes of different varieties of diacetate fiber sheets, improving the versatility and flexibility of the production line.

[0054] Example 2 provides a method for preparing yarn bundles with the same single denier but different total denier using the spinneret assembly described in Example 2 in the apparatus described in Example 1. It requires preparing yarn bundles with a single denier of approximately 6.2 denier and total deniers of approximately 124 denier, 186 denier, and 372 denier. In Example 1, without the fan-shaped adjustment unit, three types of spinnerets with 20, 30, and 60 holes need to be developed, and the spinning process is performed in three stages. The method in Example 2 includes the fan-shaped adjustment unit, and the steps are as follows:

[0055] 1. Development equipment: such as Figures 3a-3d As shown, a 60-hole spinneret cap was developed. Figure 3a ) and its matching adjustable opening adjustment device ( Figures 3b-3d The opening adjustment device can control the effective number of open spinnerets to be 20, 30 and 60 respectively.

[0056] 2. Spinning: Adjust the opening adjustment device, such as... Figure 3b As shown, the effective number of open holes is controlled to be 20, and the speed of the gear pump is adjusted synchronously to prepare 124 denier filament bundles.

[0057] 3. Change total denier: After one spinning cycle, adjust the opening adjustment device to control the effective number of openings to 30 ( Figure 3c ), 60 ( Figure 3d Meanwhile, the speed of the gear pump was adjusted synchronously to prepare filament bundles of 186 denier and 372 denier respectively, thus completing the preparation of three different filament bundles of total denier without changing the spinneret.

[0058] Parameter verification

[0059] It is necessary to prepare filament bundles with a single denier of 6.2 denier and a total denier of approximately 120 denier, 180 denier, and 360 denier.

[0060] Original method: Three types of spinnerets with 20, 30 and 60 holes need to be developed, and the spinning process is carried out in three stages.

[0061] Current method: Develop a 60-hole spinneret with a 62μm pore size ( Figure 3a The spinneret assembly is equipped with an adjustable opening regulator. By increasing or decreasing the number of fan-shaped adjustment units, as shown in Table 1, the effective number of open spinnerets can be controlled to 20. Figure 3b ), 30 ( Figure 3c ) and 60 ( Figure 3d By synchronously adjusting the speed of the gear pump, three different total denier filament bundles can be produced on the same spinneret.

[0062] Table 1: Effective number of spinnerets and total denier bundles for three different types of filament bundles

[0063] 20 6.2 124 30 6.2 186 60 6.2 372

[0064] Example 3

[0065] Example 3 provides a tow spinneret assembly with adjustable total denier, which differs from the spinneret assembly of Example 2 in that, as Figure 4 As shown, in Example 3, 100 spinneret holes 17 are evenly distributed on the spinneret cap, along with a matching adjustable opening device 13. The opening adjustment device 13 can control the effective number of open spinneret holes 17 to be 80 (…). Figure 5 ), 70 ( Figure 6 ), 60 ( Figure 7 ) and 50 ( Figure 8 ).

[0066] Example 3 also provides a method for preparing yarn bundles with the same single denier but different total denier using the spinneret assembly described in Example 3 in the apparatus of Example 1. It requires preparing yarn bundles with a single denier of 8.0 denier and total deniers of approximately 640, 560, 480, and 400 denier. Following the method described in Example 1, without installing the fan-shaped adjustment unit, four types of spinnerets with 80, 70, 60, and 50 holes need to be developed for spinning in four separate processes. The spinneret assembly in Example 3 is equipped with a fan-shaped adjustment unit, which can be adjusted by adjusting the fan-shaped adjustment unit 15. The steps are as follows:

[0067] 1. Development of equipment: Development of a 100-hole spinneret cap ( Figure 4 ) and its matching adjustable opening device, the opening adjustment device can control the effective number of open spinnerets to be 80 ( Figure 5 ), 70 ( Figure 6 ), 60 ( Figure 7 ) and 50 ( Figure 8 ).

[0068] 2. Spinning: Adjust the opening adjustment device to control the effective number of openings to 80, and simultaneously adjust the speed of the gear pump to prepare 640 denier filament bundles.

[0069] 3. Change total denier: After one spinning cycle, adjust the opening adjustment device to control the effective number of openings to 70, 60 and 50 respectively, and adjust the gear pump speed simultaneously to prepare filament bundles with a total denier of 560, 480 and 400 respectively, thus completing the preparation of 4 different total denier filament bundles without changing the spinneret.

[0070] Based on a 100-hole spinneret, the spinneret assembly is equipped with an adjustable opening regulator. By increasing or decreasing the number of fan-shaped adjustment units, as shown in Table 2, and by controlling the effective number of open spinneret holes to be 80, 70, 60, and 50, and simultaneously adjusting the speed of the gear pump, four different total denier filament bundles can be produced on the same spinneret.

[0071] Table 2: Effective number of spinnerets and total denier bundles for three different types of filament bundles

[0072] 80 8.0 640 70 8.0 560 60 8.0 480 50 8.0 400

[0073] Figures 5 to 8 The diagram shows the installation position of the sector-shaped adjustment unit under different total density reduction rates in Example 3;

[0074] like Figure 5 As shown, when the target total denier reduction rate ξ = 20%, 80% of the effective spinnerets need to be retained. At this point:

[0075] Installation of sector-shaped adjustment unit: Install an appropriate number of sector-shaped adjustment units in the gap of the baffle of the opening adjuster, embed them into the annular limiting groove to limit axial displacement, and ensure that the radial side elastic sealing gasket is tightly fitted with the baffle. The gap between the lower surface and the end face of the spinneret is ≤0.01mm to ensure a leak-free seal.

[0076] Gear pump speed adjustment: Synchronously adjust the gear pump speed to n = 0.8 × n0 (n0 is the rated speed) to ensure that the slurry flow rate matches the number of effective spinnerets and maintain stable spinning pressure.

[0077] like Figure 6 As shown, when the target total denier reduction rate ξ = 30%, 70% of the effective spinnerets need to be retained. At this point:

[0078] Fan-shaped adjustment unit: Increase the number of adjustment units or adjust their position to cover more spinneret area and close 30% of the holes.

[0079] Speed ​​control: The gear pump speed is adjusted to n = 0.7 × n0 to ensure consistency of single denier and stable quality of filament bundle.

[0080] like Figure 7 As shown, when the target total denier reduction rate ξ = 40%, 60% of the effective spinnerets need to be retained. At this point:

[0081] Adjustment unit operation: Further increase the fan-shaped adjustment unit, close 40% of the spinneret orifice, and keep the gap ≤0.01mm in the sealing structure.

[0082] Flow matching: The gear pump speed n = 0.6 × n0 achieves a precise ratio between flow rate and effective number of orifices.

[0083] like Figure 8 As shown, when the target total denier reduction rate ξ = 50%, 50% of the effective spinnerets must be retained. At this point:

[0084] Adjustment unit installation: Install the maximum number of fan-shaped adjustment units, close half of the spinneret holes, and fix the limit groove to ensure structural stability.

[0085] Speed ​​adjustment: The gear pump speed n = 0.5 × n0, to achieve the production requirement of halving the total number of pumps while keeping the number of pumps unchanged.

[0086] The fan-shaped adjustment unit is precisely positioned to correspond to the area of ​​the spinneret that needs to be closed. Combined with the elastic seal and gear pump linkage control, it enables the efficient and flexible preparation of filament bundles with different denier values.

[0087] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tow spinneret assembly with adjustable total denier, characterized in that, include: Spinneret assembly connector; spinneret support member connected to the spinneret assembly connector; An elastic washer located below the spinneret assembly connector; an adjustable opening adjuster located below the elastic washer; The opening adjuster is equipped with an increaseable and decreaseable fan-shaped adjustment unit. The inner wall is provided with an annular limiting groove. The fan-shaped adjustment unit is embedded in the limiting groove, and its outer peripheral wall is in clearance fit with the groove wall to limit axial displacement. The lower surface of the fan-shaped adjustment unit is sealed to the spinneret cap, and the spinneret cap has spinneret holes.

2. The adjustable denier spinneret assembly according to claim 1, characterized in that: The fan-shaped adjustment unit is provided with an elastic sealing gasket on its radial side, and the gap between its lower surface and the end face of the spinneret is ≤0.01mm; The elastic sealing gasket deforms under pressure to secure the opening adjuster, thereby achieving axial sealing and tolerance compensation.

3. The adjustable denier spinneret assembly according to claim 1, characterized in that: The external thread of the spinneret assembly connector matches the internal thread of the spinneret support and is connected by threads.

4. The adjustable denier spinneret assembly according to claim 1, characterized in that: The opening adjuster is equipped with multiple baffles, and the fan-shaped adjustment unit is installed between the baffles.

5. The adjustable denier spinneret assembly according to claim 4, characterized in that: The spinneret holes are evenly distributed in the θ direction on the spinneret cap within the area covered by the fan-shaped adjustment unit, and there are no spinneret holes at the connection between the baffle and the spinneret cap.

6. The adjustable denier spinneret assembly according to claim 4, characterized in that: The surface of the spinneret is provided with a baffle groove that matches the baffle, and the baffle is embedded in the baffle groove and sealed together.

7. The adjustable denier spinneret assembly according to claim 4, characterized in that: The baffle surface is coated to prevent slurry leakage and enhance sealing performance.

8. The adjustable denier spinneret assembly according to claim 1, characterized in that: A gasket is provided between the spinneret assembly connector and the spinneret.

9. The adjustable denier spinneret assembly according to claim 1, characterized in that: The spinneret support is a groove structure with a through hole in the center of the bottom. The spinneret's spinneret hole area is directly opposite the through hole, and its four edges are tightly attached to the annular support part at the bottom of the spinneret support.

10. The adjustable denier spinneret assembly according to claim 9, characterized in that: The spinneret orifice area protrudes from the central through hole at the bottom of the spinneret support, forming a downward-protruding cylindrical shape, with its upper perimeter tightly overlapping the annular support portion at the bottom of the spinneret support.

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