Coagulation bath device

Abstract

The present invention discloses a coagulation bath device, comprising a coagulation bath tank for containing a coagulation bath solution, and further comprising: a plurality of spinnerets arranged in the coagulation bath tank and having the same spinning direction, the plurality of spinnerets being arranged in two layers, a spinning tunnel for accommodating the yarn bundles ejected by the upper spinnerets being provided between the upper and lower spinnerets, the spinning tunnel being retractably extended in the spinning direction. In the present invention, the plurality of spinnerets are arranged in two layers, making full use of the internal space of the coagulation bath tank and improving the spinning production efficiency; by providing the spinning tunnel between the upper and lower spinnerets, the diffusion of stiff and broken yarns is effectively blocked, thereby improving the quality of the yarn bundle; the spinning tunnel is retractable, and when the lower spinneret needs to be replaced, the spinning tunnel is retracted in the spinning direction, making it convenient for the user to disassemble and replace the lower spinneret.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical equipment, and in particular relates to a coagulation bath device. Background Art

[0002] During the spinning and coagulation bath fiber-forming process, the spinning solution is ejected through the spinneret and precipitated in the coagulation bath to form a tow. Impurities in the spinning solution can lead to stiff and broken filaments in the coagulation bath. If the tows ejected from different spinnerets in the coagulation bath are not separated, stiff and broken filaments from the spinnerets will flow in the coagulation bath and continuously diffuse. These stiff and broken filaments travel with the tow, becoming wrapped, entangled, and aggregated on the tow. This deteriorates the quality of the tow throughout the coagulation bath and significantly reduces production continuity.

[0003] Therefore, it is necessary to set a partition in the coagulation bath to isolate the filament bundles ejected from different spinnerets to avoid the filament bundles ejected from different spinnerets affecting each other.

[0004] Currently, only a single layer of spinnerets is installed in the coagulation bath, and the yarn bundles ejected by the single layer of spinnerets are isolated from each other through different spinning channels. This arrangement results in a small number of spinnerets in the coagulation bath and relatively low spinning efficiency.

[0005] However, if the spinnerets are arranged in two layers, it is difficult to isolate the upper and lower spinnerets. Once the upper and lower spinnerets are isolated, the lower spinnerets become difficult to install and remove, or even impossible to remove. Users cannot replace the spinnerets according to actual needs, which brings great inconvenience to production and installation.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the problems of low production efficiency, poor quality of the resulting yarn bundles, and difficulty in replacing the spinnerets of the existing coagulation bath device, and to provide a coagulation bath device so that the yarn bundles ejected from different spinnerets are effectively isolated, the quality of the yarn bundles is improved, and the disassembly and installation of the spinnerets is more convenient.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a coagulation bath device, including a coagulation bath tank for containing a coagulation bath solution, and also including:

[0009] Several spinnerets are arranged in the coagulation bath with the same spinning direction. The spinnerets are arranged in two layers.

[0010] A spinning tunnel for accommodating the filament bundle ejected from the upper spinneret is provided between the upper spinneret and the lower spinneret. The spinning tunnel is telescopically extended in the spinning direction.

[0011] Furthermore, the spinning tunnel is a groove structure with openings at both ends, or the spinning tunnel is a cylindrical structure with openings at both ends, and the upper spinneret is arranged in the spinning tunnel.

[0012] Furthermore, the coagulation bath device includes several of the groove structures, the coagulation bath device includes several of the spinning tunnels, several upper spinnerets are respectively arranged in the several spinning tunnels, and the several spinning tunnels can be respectively contracted in the spinning direction.

[0013] Furthermore, a plurality of isolation slots extending in the spinning direction are provided in the spinning tunnel, and a plurality of upper spinnerets are respectively provided in the plurality of isolation slots;

[0014] Preferably, the spinning tunnel has a bottom wall extending horizontally in the spinning direction, and a plurality of partitions perpendicular to the bottom wall and extending in the spinning direction are provided in the spinning tunnel, and the bottom wall and adjacent partitions form the isolation groove.

[0015] Furthermore, the spinning tunnel includes a fixed section extending along the spinning direction and arranged on the coagulation bath, and a movable section located between the upper spinneret and the lower spinneret and slidably connected to one end of the fixed section, and the movable section can slide and retract toward the fixed section.

[0016] Furthermore, the movable section includes a first end face away from the fixed section, the fixed section includes a second end face away from the movable section, and the lower spinneret includes a third end face close to the fixed section.

[0017] The movable section can be retracted toward the fixed section to a position where the distance between the first end face and the second end face is smaller than the distance between the third end face and the second end face;

[0018] Preferably, the upper spinneret includes a fourth end face close to the fixed section, and the distance from the fourth end face to the second end face is smaller than the distance from the third end face to the second end face.

[0019] The movable section can be retracted toward the fixed section to a position where the distance from the first end surface to the second end surface is smaller than the distance from the third end surface to the second end surface and larger than the distance from the fourth end surface to the second end surface.

[0020] Furthermore, the coagulation bath has a bottom wall, and a partition is provided between adjacent spinnerets in the lower layer, which is perpendicular to the bottom wall of the coagulation bath and extends in the spinning direction. The fixed section is provided on the end of the partition away from the bottom wall of the coagulation bath, and one end of the movable section is clamped between the fixed section and the partition and can be retracted toward the fixed section along the partition.

[0021] Preferably, the bottom of the fixed section is arranged on the end of the partition away from the bottom wall of the coagulation bath;

[0022] Preferably, an axially extending slot is provided on the outer side wall of the fixing section, and the fixing section is fixed on the partition through the slot.

[0023] Furthermore, the coagulation bath has a bottom wall, and a partition is provided between adjacent spinnerets in the lower layer, which is perpendicular to the bottom wall of the coagulation bath and extends in the spinning direction. The fixed section is provided on two adjacent partitions, and the movable section is slidably connected to the two adjacent partitions and can be retracted along the partition toward the fixed section.

[0024] Preferably, the outer side wall of the movable section is provided with two axially extending slots, and the two slots are slidably mounted on the ends of two adjacent partitions away from the bottom wall of the coagulation bath.

[0025] Furthermore, the movable section is a groove structure with openings at both ends, and two axially extending edges of the groove structure are folded outwards to form the clamping groove.

[0026] Furthermore, the inner side wall of the movable section has an axially extending protrusion structure, and the outer side wall of the fixed section has an axially extending slide groove, and the protrusion structure is clamped in the slide groove and is slidably connected to the slide groove;

[0027] Alternatively, the outer side wall of the movable section has an axially extending protrusion structure, the inner side wall of the fixed section has an axially extending slide groove, and the protrusion structure is clamped in the slide groove and is slidably connected to the slide groove.

[0028] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0029] 1. In the present invention, the spinnerets are arranged in two layers, one above the other, which makes full use of the internal space of the coagulation bath and improves the spinning production efficiency. By arranging a spinning tunnel between the upper and lower spinnerets, the diffusion of stiff and broken yarns is effectively blocked, thereby improving the quality of the yarn bundle. The spinning tunnel is retractable. When the lower spinneret needs to be replaced, the spinning tunnel is retracted in the spinning direction, which makes it easy for users to disassemble and replace the lower spinneret.

[0030] 2. By retracting the movable section to a position where the distance from the first end face to the second end face is smaller than the distance from the third end face to the second end face, it is convenient for the user to remove and replace the lower spinneret from the coagulation bath;

[0031] By shrinking the movable section to a position where the distance from the first end face to the second end face is less than the distance from the third end face to the second end face, and greater than the distance from the fourth end face to the second end face, it is convenient for users to disassemble and replace the lower spinneret, and it can also ensure that the filament bundles ejected by the upper spinneret are isolated from the filament bundles ejected by the lower spinneret, thereby improving the spinning efficiency and the filament bundle quality.

[0032] 3. The isolation groove effectively isolates the yarn bundles ejected from different spinnerets in the upper layer, blocking the diffusion of stiff and broken yarns produced by different spinnerets in the spinning tunnel, thereby improving the quality of the yarn bundle; in addition, when the user needs to dismantle and replace the lower spinneret as a whole, it is only necessary to shrink the spinning tunnel in the direction of spinning, which is easy to operate.

[0033] 4. Several upper-layer spinnerets are respectively arranged in several spinning tunnels, and the several spinning tunnels can be contracted along the spinning direction respectively. When the user needs to replace a spinneret in the lower layer, the user only needs to contract the spinning tunnel corresponding to the spinneret, which does not affect the normal spinning operation of other spinnerets, thereby improving the replacement efficiency and reducing the difficulty of replacement.

[0034] 5. The movable section is slidably connected to the adjacent partition through two slots, so that the movable section can slide and retract toward the fixed section. The installation structure is stable and the sliding process is smooth, which will not cause large fluctuations in the coagulation bath solution. Under the premise of facilitating the user to replace the lower spinneret, it is beneficial to maintain the stability of the coagulation bath system.

[0035] 6. The movable section and the fixed section are connected by sliding through a raised structure and a slide groove. The connection method is simple. The movable section no longer needs to be connected with the partition of the coagulation bath, which reduces the difficulty of installation. In addition, the movable section and the fixed section can be separately applied to coagulation baths of different specifications and sizes, and are not limited to coagulation baths of specific specifications, which increases the universality of the spinning tunnel.

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0038] Figure 1 It is a schematic diagram of the assembly structure of the present invention;

[0039] Figure 2 This is a schematic diagram of the spinning tunnel structure of the present invention;

[0040] Figure 3 This is another schematic diagram of the spinning tunnel structure of the present invention.

[0041] In the figure: 1. coagulation bath; 11. bottom wall of coagulation bath; 2. upper spinneret; 21. fourth end face; 3. lower spinneret; 31. third end face; 4. movable section; 41. operating part; 42. first end of movable section; 43. second end of movable section; 44. first end face; 5. fixed section; 51. first end of fixed section; 6. partition; 7. spinning solution feed pipe; 8. spinning tunnel.

[0042] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] like Figures 1 to 3 As shown, the present invention discloses a coagulation bath device, which includes a coagulation bath tank 1 for containing a coagulation bath solution, and also includes a plurality of spinnerets, which are arranged in the coagulation bath tank 1 and have the same spinning direction.

[0047] The spinnerets are arranged in two layers, with the upper spinnerets 2 and the lower spinnerets 3 being staggered. A spinning tunnel 8 is provided between the upper and lower spinnerets 2 and 3 to accommodate the filaments ejected from the upper spinnerets 2. The spinning tunnel 8 is telescopically extended in the spinning direction.

[0048] In the present invention, the spinnerets are arranged in two layers, with the upper spinnerets 2 and the lower spinnerets 3 offset from each other. This fully utilizes the space within the coagulation bath 1 and improves spinning efficiency. A spinning tunnel 8 is provided between the upper and lower spinnerets 2 and 3, effectively preventing the spread of stiff and broken yarns and improving the quality of the yarn. The spinning tunnel 8 is retractable. When the lower spinneret 3 needs to be replaced, the spinning tunnel 8 is retracted in the spinning direction, making it easier for the user to remove and replace the lower spinneret 3.

[0049] The spinning shaft 8 in the present invention is a groove structure with openings at both ends; alternatively, the spinning shaft 8 is a cylindrical structure with openings at both ends, and the upper spinneret 2 is disposed in the spinning shaft 8. The spinning shaft 8 can accommodate the filament bundle ejected by the upper spinneret 2 and prevent the filament bundle ejected by the upper spinneret 2 from interfering with the filament bundle ejected by the lower spinneret 3.

[0050] As an embodiment of the present invention, the coagulation bath device includes a plurality of spinning shafts 8, and a plurality of upper spinnerets 2 are respectively arranged in the plurality of spinning shafts 8, and the plurality of spinning shafts 8 can be respectively contracted along the spinning direction.

[0051] In this embodiment, several spinning channels 8 can be contracted independently of each other. When the user needs to replace one of the lower-layer spinnerets 3, the user only needs to contract the spinning channel 8 corresponding to the spinneret, which does not affect the normal spinning operation of other spinnerets, thereby improving the replacement efficiency and reducing the difficulty of replacement.

[0052] As another embodiment of the present invention, a plurality of isolation grooves extending along the spinning direction are provided in the spinning tunnel 8, and a plurality of the upper spinnerets 2 are respectively provided in the plurality of isolation grooves.

[0053] As an implementation of this embodiment, the spinning tunnel 8 has a bottom wall extending horizontally in the spinning direction, and a plurality of first partitions perpendicular to the bottom wall and extending in the spinning direction are arranged in the spinning tunnel 8. The bottom wall and the adjacent first partitions form the isolation groove.

[0054] The isolation groove effectively isolates the yarn bundles sprayed out by different spinnerets in the upper layer, blocks the diffusion of stiff and broken yarns produced by different spinnerets in the spinning tunnel 8, and improves the yarn bundle quality and spinning efficiency; in addition, when the user needs to disassemble and replace the lower spinneret as a whole, it is only necessary to shrink the spinning tunnel 8 in the spinning direction, which is easy to operate.

[0055] As another embodiment of the present invention, the spinning tunnel 8 includes a fixed section 5 extending along the spinning direction and arranged on the coagulation bath 1, and a movable section 4 located between the upper spinneret 2 and the lower spinneret 3 and slidingly connected to one end of the fixed section 5, and the movable section 4 can slide and retract toward the fixed section 5.

[0056] Specifically, the fixed section 5 and the movable section 4 match in shape and size, and both the movable section 4 and the fixed section 5 have groove structures with openings at both ends. The second end 43 of the movable section is slidably connected to the first end 51 of the fixed section, and the upper spinneret 2 is disposed within the first end 42 of the movable section.

[0057] In this embodiment, when the user needs to replace the lower spinneret 3, the movable section 4 is retracted toward the fixed section 5 so that the movable section 4 does not block the lower spinneret 3, making it easier for the user to disassemble and replace the lower spinneret 3.

[0058] As an embodiment of the present invention, the movable section 4 includes a first end face 44 away from the fixed section 5, the fixed section 5 includes a second end face away from the movable section 4, and the lower spinneret 3 includes a third end face 31 close to the fixed section 5. The movable section 4 can be retracted toward the fixed section 5 to a position where the distance from the first end face 44 to the second end face is less than the distance from the third end face 31 to the second end face.

[0059] Furthermore, the upper spinneret 2 includes a fourth end face 21 adjacent to the fixed section 5, and the distance between the fourth end face 21 and the second end face is less than the distance between the third end face 31 and the second end face. The movable section 4 can be retracted toward the fixed section 5 to a position where the distance between the first end face 44 and the second end face is less than the distance between the third end face 31 and the second end face, and greater than the distance between the fourth end face 21 and the second end face.

[0060] By shrinking the movable section 4 to a position where the distance from the first end face 44 to the second end face is smaller than the distance from the third end face 31 to the second end face, it is convenient for the user to remove and replace the lower spinneret 3 from the coagulation bath 1 .

[0061] By shrinking the movable section 4 to a position where the distance from the first end face 44 to the second end face is less than the distance from the third end face 31 to the second end face, and greater than the distance from the fourth end face 21 to the second end face, it is convenient for the user to disassemble and replace the lower spinneret 3, and it can also ensure that the filament bundles ejected by the upper spinneret 2 are isolated from the filament bundles ejected by the lower spinneret 3, so as to improve the spinning efficiency and the filament bundle quality.

[0062] As another embodiment of the present invention, the coagulation bath 1 has a coagulation bath bottom wall 11, and a partition 6 is provided between adjacent spinnerets in the lower layer, perpendicular to the coagulation bath bottom wall 11 and extending in the spinning direction. The fixed section 5 is provided at the end of the partition 6 away from the coagulation bath bottom wall 11, and the second end 43 of the movable section is clamped between the fixed section 5 and the partition 6 and can be retracted along the partition 6 toward the fixed section 5.

[0063] Furthermore, if Figure 1 and Figure 2As shown, the bottom of the fixed section 5 is placed on the partition 6, and there is a gap between the first end 51 of the fixed section and the partition 6. The side wall of the second end 43 of the movable section is clamped in the gap between the first end 51 of the fixed section and the partition 6, and can slide and shrink in the gap.

[0064] Furthermore, an axially extending slot is formed on the outer sidewall of one end of the fixed segment 5, and the fixed segment 5 is secured to the partition 6 via the slot. The second end 43 of the movable segment is clamped between the first end 51 of the fixed segment and the partition and can be retracted toward the fixed segment 5. The slot allows for the installation and connection between the fixed segment 5 and the partition 6, making installation simple and convenient for disassembly and replacement.

[0065] As another embodiment of the present invention, Figure 3 As shown, the outer wall of the movable section 4 has two axially extending slots, which can be slidably clamped on the ends of the adjacent partitions 6 away from the bottom wall of the coagulation bath, and the movable section 4 can be retracted along the partition 6 toward the fixed section 5.

[0066] In this embodiment, the movable section 4 is slidably connected to the adjacent partition 6 through two slots, so that the movable section 4 can slide and retract toward the fixed section 5. The installation structure is stable and the sliding process is smooth, which will not cause large fluctuations in the coagulation bath solution. While facilitating the user to replace the lower spinneret 3, it is beneficial to maintain the stability of the coagulation bath system.

[0067] Specifically, the movable section 4 is a groove structure with openings at both ends, and the two axially extending edges are folded outward to form the slot, that is, the slot is integrally formed with the movable section 4, the molding method is simple, and the structure is stable and reliable.

[0068] Alternatively, the slot and the movable section 4 are separate structures.

[0069] As another embodiment of the present invention, the inner side wall of the movable section 4 has an axially extending protrusion structure, the outer side wall of the fixed section 5 has an axially extending slide groove, and the protrusion structure is clamped in the slide groove and is slidably connected to the slide groove.

[0070] Alternatively, the outer wall of the movable section 4 has an axially extending protrusion structure, the inner circumferential wall of the fixed section 5 has an axially extending slide groove, and the protrusion structure is clamped in the slide groove and is slidably connected to the slide groove.

[0071] In this embodiment, the movable section 4 and the fixed section 5 are connected by sliding through a protruding structure and a slide groove. The connection method is simple. The movable section 4 no longer needs to be connected with the partition 6 of the coagulation bath, which reduces the difficulty of installation. The movable section 4 and the fixed section 5 can be individually applied to different coagulation baths and are not limited to coagulation baths of one specification, thereby increasing the universality of the spinning tunnel 8.

[0072] In the present invention, the second end 43 of the movable section is sleeved on the outside of the first end 51 of the fixed section. The first end 42 of the movable section has a limit block protruding radially inward, and the limit block can abut against the end wall of the first end 51 of the fixed section.

[0073] Alternatively, the movable section second end 43 is disposed inside the fixed section first end 51 , and the movable section first end 42 has a limit block protruding radially outward, which can abut against the end wall of the fixed section first end 51 .

[0074] When the movable section 4 contracts toward the fixed section 5, if the movable section 4 contracts to the front end of the spinneret of the upper spinneret 2, there will be no barrier between the upper spinneret 2 and the lower spinneret 3, which can easily cause the spread of stiff and broken yarns. Therefore, by providing a limit block to limit the contraction of the movable section 4, it effectively prevents the movable section 4 from contracting toward the fixed section 5 to the front end of the spinneret of the upper spinneret 2. On the basis of facilitating the replacement of the lower spinneret 3, the quality of the yarn bundle is guaranteed.

[0075] The movable section 4 of the present invention is provided with an operating portion 41 , which is formed by a through hole on the side wall of the movable section 4 . The user can pull the movable section 4 to retract through the operating portion 41 , which is convenient for user operation.

[0076] The spinneret of the present invention comprises a housing structure with a cavity therein. The housing structure includes a spinneret connected to the cavity and a spinning solution feed port positioned opposite the spinneret. The coagulation bath apparatus also includes a spinning solution feed pipe 7 connected to the spinning solution feed port for injecting spinning solution into the spinneret cavity. The spinning solution is ejected from the spinneret and forms a filament bundle in the coagulation bath solution.

[0077] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A coagulation bath apparatus, comprising a coagulation bath tank for containing a coagulation bath solution, characterized in that: Also includes: A plurality of spinnerets are disposed in a coagulation bath and have the same spinning direction. The spinnerets are arranged in two layers, the upper spinnerets and the lower spinnerets are staggered left and right. A spinning tunnel is provided between the upper and lower spinnerets for accommodating the filament bundles ejected by the upper spinnerets. The spinning tunnel is telescopically extended in the spinning direction. The spinning tunnel includes a fixed section extending along the spinning direction and arranged on the coagulation bath, and a movable section located between the upper spinneret and the lower spinneret and slidably connected to one end of the fixed section. Both the movable section and the fixed section have groove structures with openings at both ends, and the movable section can slide and retract toward the fixed section.

2. A coagulation bath device according to claim 1, characterized in that: The coagulation bath device comprises a plurality of spinning tunnels, a plurality of upper spinnerets are respectively arranged in the plurality of spinning tunnels, and the plurality of spinning tunnels can be respectively contracted in the spinning direction.

3. A coagulation bath device according to claim 2, characterized in that: A plurality of isolation grooves extending in the spinning direction are arranged in the spinning tunnel, and a plurality of upper spinnerets are respectively arranged in the plurality of isolation grooves.

4. A coagulation bath device according to claim 3, characterized in that: The spinning tunnel has a bottom wall extending horizontally in the spinning direction. A plurality of partitions perpendicular to the bottom wall and extending in the spinning direction are arranged in the spinning tunnel. The bottom wall and adjacent partitions form the isolation groove.

5. A coagulation bath device according to any one of claims 1 to 4, characterized in that: The spinning tunnel includes a fixed section extending along the spinning direction and arranged on the coagulation bath, and a movable section located between the upper spinneret and the lower spinneret and slidably connected to one end of the fixed section, and the movable section can slide and shrink toward the fixed section.

6. A coagulation bath device according to claim 5, characterized in that: The movable section includes a first end face away from the fixed section, the fixed section includes a second end face away from the movable section, the lower spinneret includes a third end face close to the fixed section, and the movable section can be retracted toward the fixed section to a position where the distance from the first end face to the second end face is less than the distance from the third end face to the second end face.

7. A coagulation bath device according to claim 6, characterized in that: The upper spinneret includes a fourth end face close to the fixed section, the distance from the fourth end face to the second end face is smaller than the distance from the third end face to the second end face, and the movable section can be retracted toward the fixed section to a position where the distance from the first end face to the second end face is smaller than the distance from the third end face to the second end face and greater than the distance from the fourth end face to the second end face.

8. A coagulation bath device according to claim 7, characterized in that: The coagulation bath has a bottom wall, and a partition is provided between adjacent spinnerets in the lower layer, which is perpendicular to the bottom wall of the coagulation bath and extends in the spinning direction. The fixed section is provided on the end of the partition away from the bottom wall of the coagulation bath, and one end of the movable section is clamped between the fixed section and the partition, and can be retracted toward the fixed section along the partition.

9. A coagulation bath device according to claim 8, characterized in that: The bottom of the fixed section is arranged on the end of the partition away from the bottom wall of the coagulation bath.

10. A coagulation bath device according to claim 9, characterized in that: An axially extending clamping groove is provided on the outer side wall of the fixing section, and the fixing section is clamped on the partition plate through the clamping groove.

11. The coagulation bath device according to claim 5, characterized in that: The coagulation bath has a bottom wall, and a partition is provided between adjacent spinnerets in the lower layer, which is perpendicular to the bottom wall of the coagulation bath and extends in the spinning direction. The fixed section is provided on two adjacent partitions, and the movable section is slidably connected to the two adjacent partitions and can be retracted toward the fixed section along the partition.

12. A coagulation bath device according to claim 11, characterized in that: Two axially extending clamping grooves are provided on the outer side wall of the movable section. The two clamping grooves are respectively slidably clamped on the ends of two adjacent partitions away from the bottom wall of the coagulation bath.

13. A coagulation bath device according to claim 12, characterized in that: The movable section is a groove structure with openings at both ends, and two axially extending edges of the groove structure are folded outwards to form the clamping groove.

14. A coagulation bath device according to any one of claims 5 to 13, characterized in that: The inner side wall of the movable section is provided with an axially extending protrusion structure, and the outer side wall of the fixed section is provided with an axially extending slide groove, and the protrusion structure is clamped in the slide groove and is slidably connected to the slide groove; Alternatively, the outer side wall of the movable section has an axially extending protrusion structure, the inner side wall of the fixed section has an axially extending slide groove, and the protrusion structure is clamped in the slide groove and is slidably connected to the slide groove.

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