Sheath-core double-component spinneret plate assembly

Abstract

The utility model discloses a sheath-core double-component spinneret plate assembly, and belongs to the technical field of spinneret plates. The feeding device mainly comprises a feeding plate, wherein at least two groups of first feeding holes and at least two groups of second feeding holes are formed in the feeding plate; the first distribution plate is fixedly mounted at the bottom of the feeding plate, at least two groups of upper flow guide holes are formed in the first distribution plate, and at least two groups of lower flow guide holes are formed in the lower half part of the first distribution plate; the second distribution plate is fixedly mounted at the bottom of the first distribution plate, and at least two groups of second flow guide holes are formed in the second distribution plate. According to the sheath-core double-component spinneret plate assembly, the funnel-type feeding opening is formed, and the whole feeding opening is diffused through the feeding opening, so that when raw materials enter the feeding plate through the feeding opening, the raw materials can be rapidly diffused through the whole feeding plate, uniform distribution of the raw materials can be achieved earlier, the production efficiency of spinning is further improved, and the production cost is reduced. And the spinning product quality is improved.

Description

Technical Field

[0001] This application relates to the field of spinneret technology, specifically to a two-component spinneret assembly with a core and sheath. Background Technology

[0002] Spinnerets are key components in chemical fiber production, primarily used to extrude molten polymers or spinning solutions through precisely designed micropores to form continuous fibers. Spinnerets are mainly used in the manufacturing of functional fibers and synthetic fibers. Core-sheath bicomponent spinnerets, on the other hand, are precision devices used to produce composite fibers. They can simultaneously extrude two polymer materials with different properties, forming a composite fiber with an outer layer encapsulating an inner layer. Through precise structural design and material combinations, core-sheath bicomponent spinnerets drive the development of chemical fiber products towards high performance and multifunctionality, showing broad prospects in fields such as medical care, environmental protection, and smart wearables.

[0003] For example, the patent with authorization announcement number CN212223160U discloses a two-component meltblown plate assembly, including a distribution plate. The distribution plate is tightly installed by threading an upper distribution plate and a lower distribution plate. A feed plate is installed above the upper distribution plate. The surface of the feed plate has several sets of feed ports evenly opened. Through the several sets of feed ports, the mixing and injection of two different raw materials is realized.

[0004] Although the above-mentioned device realizes the mixing and feeding of two raw materials, after the raw materials enter the spinneret assembly, they are usually arranged and divided by the channels in the distribution plate after entering the distribution plate. During the arrangement and division, there will inevitably be a problem of uneven distribution of a few raw materials. If the raw materials cannot be pre-divided before entering the distribution plate, it may affect the efficiency of spinning production. Therefore, it is necessary to provide a core-sheath dual-component spinneret assembly to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a two-component spinneret assembly with a core and sheath, which solves the problem of the inability to pre-distribute raw materials.

[0007] The technical solution adopted by this application to solve its technical problem is: a two-component spinneret assembly, comprising: a feed plate having at least two sets of first feed inlets and at least two sets of second feed inlets; a first distribution plate fixedly installed at the bottom of the feed plate, having at least two sets of upper guide holes and at least two sets of lower guide holes in the lower half of the first distribution plate; and a second distribution plate fixedly installed at the bottom of the first distribution plate, having at least two sets of second guide holes. The first spinneret is fixedly installed at the bottom of the second distribution plate, and has at least two sets of confluence holes; the second spinneret is fixedly installed at the bottom of the first spinneret, and has at least two sets of wire exit holes and at least two sets of extrusion holes at the bottom of the second spinneret; wherein: the first feed inlet and the second feed inlet are funnel-shaped designs, the first feed inlet and the second feed inlet diffuse the entire feed plate, and the first feed inlet and the second feed inlet are arranged at equal intervals.

[0008] Furthermore, the upper guide holes are arranged vertically, and the upper guide holes correspond alternately with the first feed inlet and the second feed inlet.

[0009] Furthermore, the lower guide holes are arranged horizontally, and the lower guide holes are arranged sequentially from top to bottom.

[0010] Furthermore, the second guide holes are arranged longitudinally, and the second guide holes are also arranged at equal intervals.

[0011] Furthermore, the upper end face of the wire outlet hole is provided with a groove surface.

[0012] Furthermore, the diameter of the extrusion hole is smaller than the diameter of the wire exit hole.

[0013] The beneficial effects of this application are as follows: The bicomponent spinneret assembly provided by this application has a funnel-shaped feed inlet that diffuses across the entire feed inlet. When the raw material enters the feed plate through the feed inlet, it will quickly diffuse across the entire feed plate, thereby achieving uniform distribution of the raw material earlier, further improving the production efficiency of spinning, and improving the quality of the spun products.

[0014] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a cross-sectional view of the overall structure of a two-component spinneret assembly with a core and sheath in this application;

[0018] Figure 2 for Figure 1 Diagram of hole distribution in the feed plate structure;

[0019] Figure 3 for Figure 1 Cross-sectional view of the first and second feed inlets;

[0020] Figure 4 for Figure 1 Top view of the upper half of the first distribution plate structure;

[0021] Figure 5 for Figure 1 Bottom view of the lower half of the first distribution plate structure;

[0022] Figure 6 for Figure 1 Top view of the second distribution plate structure;

[0023] Figure 7 for Figure 1 Top view of the first spinneret structure;

[0024] Figure 8 for Figure 1 Top view of the second spinneret structure;

[0025] Figure 9 for Figure 1 Trajectory diagram of raw materials A and B in the middle.

[0026] The following are the labeling elements in the figure:

[0027] 1. Feed plate; 11. First feed inlet; 12. Second feed inlet; 2. First distribution plate; 21. Upper guide hole; 22. Lower guide hole; 3. Second distribution plate; 31. Second guide hole; 4. First spinneret; 41. Converging hole; 5. Second spinneret; 51. Extrusion hole. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] like Figures 1-2 As shown, this application provides a two-component spinneret assembly with a core and a sheath, including a feed plate 1. At least two sets of first feed ports 11 and at least two sets of second feed ports 12 are provided on the feed plate 1. The first feed ports 11 mainly facilitate the entry of raw material A into the feed plate 1, and the second feed ports 12 mainly facilitate the entry of raw material B into the feed plate 1, so as to facilitate the subsequent mixing of raw materials A and B.

[0031] like Figure 1 , Figures 4-5 As shown, a first distribution plate 2 is fixedly installed at the bottom of the feed plate 1. This first distribution plate 2 is mainly used for pre-distributing raw materials A and B. Vertically arranged upper guide holes 21 are provided on the first distribution plate 2. These upper guide holes 21 are staggered with the first feed inlet 11 and the second feed inlet 12 to... Figure 4 For example, the two adjacent sets of upper guide holes 21 correspond to the first feed port 11 and the second feed port 12 respectively. So when raw materials A and B enter the feed plate 1 from the first feed port 11 and the second feed port 12 respectively, they flow downward and reach the upper guide holes 21. The raw materials A and B are arranged adjacent to each other to facilitate the subsequent mixing of the two raw materials.

[0032] It should be noted that the first feed inlet 11 and the second feed inlet 12 are equidistant, so that the A and B raw materials entering the upper guide hole 21 are arranged at equal intervals. Figure 4 For reference, the space inside the upper guide hole 21 is arranged in an equidistant manner. For ease of explanation, the space inside the upper guide hole 21 is divided into odd-numbered positions and even-numbered positions. Material A falls in the even-numbered position inside the upper guide hole 21, and material B falls in the odd-numbered position inside the upper guide hole 21. The two are not on the same horizontal line.

[0033] The lower half of the first distribution plate 2 is provided with horizontally arranged lower guide holes 22. The lower guide holes 22 are arranged horizontally and multiple sets are arranged from top to bottom. Since the A material falling from the upper guide hole 21 is on the same horizontal line, the A material will enter the same set of lower guide holes 22. Similarly, the B material will enter the same set of lower guide holes 22. At this time, the A and B materials are not yet mixed, but are evenly and equally spaced in the first distribution plate 2.

[0034] like Figure 1 , Figure 6 As shown, a second distribution plate 3 is fixedly installed at the bottom of the first distribution plate 2. The second distribution plate 3 has longitudinally arranged second guide holes 31. The arrangement of the second guide holes 31 is similar to that of the upper guide holes 21. Raw materials A and B flow into the second guide holes 31 through the lower guide holes 22 and are evenly and alternately distributed in the second distribution plate 3.

[0035] like Figures 1-7 - Figure 9 As shown, a first spinneret 4 is fixedly installed at the bottom of the second distribution plate 3, and a second spinneret 5 is fixedly installed at the bottom of the first spinneret 4. A confluence hole 41 is provided on the first spinneret 4, and an extrusion hole 51 is provided at the bottom of the second spinneret 5. An outlet hole is provided on the second spinneret 5. The upper end face of the outlet hole is provided with a groove surface. The inner diameter of the extrusion hole 51 is smaller than the inner diameter of the outlet hole. After passing through the second guide hole 31, raw materials A and B flow to the first spinneret 4 and enter the confluence hole 41, and then flow out from the confluence hole 41 and enter the outlet hole.

[0036] It should be noted that when material A flows out of the manifold 41 and into the extrusion hole 51, it is directly facing the center of the wire exit hole, while material B flows to the groove surface of the wire exit hole. Thus, when materials A and B enter the wire exit hole, material A is in the middle position, and material B wraps around material A, thereby forming an interface composite of the two materials, and finally being extruded through the extrusion hole 51. Furthermore, since the diameter of the extrusion hole 51 is smaller than the diameter of the wire exit hole, materials A and B can achieve a better wrapping effect in the extrusion hole 51.

[0037] In summary, raw materials A and B enter the feed plate 1 through the first feed port 11 and the second feed port 12, and then pass through the first distribution plate 2 and the second distribution plate 3 in an alternating arrangement to achieve cross-flow guidance and diversion of raw materials A and B. Finally, raw materials A and B enter the confluence hole 41 and then flow to the filament outlet hole. Raw materials A and B are wrapped and compounded in the filament outlet hole, and finally extruded through the extrusion hole 51 to form a core-sheath structure spinning. This core-sheath structure spinning has better wrapping properties and improves the quality of the spun products. Secondly, the entire spinneret structure achieves rapid material injection and diversion through the holes arranged in different ways, which improves the quality of spinning and production efficiency.

[0038] To further achieve the pre-allocation of raw materials, such as Figures 1-3As shown, the first feed inlet 11 and the second feed inlet 12 are funnel-shaped designs. They are evenly distributed on the feed plate 1, spreading across the entire feed plate 1. The funnel-shaped design of the first feed inlet 11 and the second feed inlet 12 facilitates the entry of raw materials while limiting their trajectory, allowing materials A and B to enter the feed plate 1 through their respective channels. The bottom opening is relatively large, allowing the raw material to pass quickly under the feed plate 1. Secondly, the first feed port 11 and the second feed port 12 diffuse the entire feed plate 1, so that the raw material is diffused to the entire feed plate 1 before entering the first distribution plate 2. The raw material can be distributed more evenly earlier, which facilitates the subsequent combination of the two raw materials and further improves the spinning production efficiency. Furthermore, the A and B raw materials eventually form a core-sheath wrapped spinning, which is more evenly wrapped and has better quality than traditional spinning, further improving the product quality of the spinning.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A two-component spinneret assembly with a core and sheath, characterized in that: include: The feed plate (1) has at least two sets of first feed ports (11) and at least two sets of second feed ports (12); The first distribution plate (2) is fixedly installed at the bottom of the feed plate (1). The first distribution plate (2) has at least two sets of upper guide holes (21) and the lower half of the first distribution plate (2) has at least two sets of lower guide holes (22). The second distribution plate (3) is fixedly installed at the bottom of the first distribution plate (2), and at least two sets of second guide holes (31) are provided on the second distribution plate (3); The first spinneret (4) is fixedly installed on the bottom of the second distribution plate (3), and at least two sets of confluence holes (41) are provided on the first spinneret (4); The second spinneret (5) is fixedly installed at the bottom of the first spinneret (4). The second spinneret (5) has at least two sets of wire outlet holes and at least two sets of extrusion holes (51) at the bottom of the second spinneret (5). Wherein: the first feed port (11) and the second feed port (12) are funnel-shaped designs, the first feed port (11) and the second feed port (12) diffuse the entire feed plate (1), and the first feed port (11) and the second feed port (12) are arranged at equal intervals.

2. The sheath-core bicomponent spinneret assembly according to claim 1, characterized in that: The upper guide holes (21) are arranged longitudinally, and the upper guide holes (21) are staggered with the first feed inlet (11) and the second feed inlet (12).

3. The sheath-core bicomponent spinneret assembly according to claim 2, characterized in that: The lower guide holes (22) are arranged horizontally, and the lower guide holes (22) are arranged sequentially from top to bottom.

4. The sheath-core bicomponent spinneret assembly according to claim 3, characterized in that: The second guide hole (31) is arranged longitudinally, and the second guide hole (31) is also arranged at equal intervals.

5. A sheath-core bicomponent spinneret assembly according to claim 4, characterized in that: The upper end face of the wire outlet hole is provided with a groove surface.

6. The sheath-core bicomponent spinneret assembly according to claim 5, characterized in that: The diameter of the extrusion hole (51) is smaller than the diameter of the wire outlet hole.

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