Short fiber sheath-core double-component spinning assembly

Abstract

The utility model relates to the technical field of spinning assemblies, in particular to a short fiber skin-core double-component spinning assembly which comprises a sand cavity plate, a distribution assembly and a spinneret plate which are sequentially arranged, and the distribution assembly comprises a first distribution plate, a second distribution plate, a third distribution plate and a fourth distribution plate which are sequentially arranged in an overlapped mode. A first material cavity and a second material cavity are formed in the sand cavity plate, the first material cavity and the second material cavity are mutually independent, the first material cavity is used for containing a first component material, and the second material cavity is used for containing a second component material. The first group of materials and the second group of materials are distributed for multiple times to form the skin-core structure through the multiple layers of sequentially-stacked distribution assemblies, the spinning assembly has the advantages of being reasonable in design mechanism, convenient to maintain, long in service life, good in coating effect and the like, and the problems that an existing spinning assembly is complex in structure, consequently, installation is tedious, maintenance is inconvenient, the skin-core coating effect is poor, and the service life is short are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning components, in particular to a staple fiber sheath-core two-component spinning component. Background Art

[0002] The core-shell composite staple fiber (commonly known as ES fiber) is one of the most in-demand composite fiber varieties. It can be used to produce thermally bonded nonwoven fabrics. It is soft, fluffy, and has good water absorption or permeability. It is widely used in sanitary surface materials such as sanitary napkins, disposable diapers, surgical masks, and bandages. The existing component structure is complex, resulting in cumbersome installation, inconvenient maintenance, poor core-shell coating effect, and short service life. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to solve the problems of complex component structure, cumbersome installation, inconvenient maintenance, poor sheath-core coating effect and short service life, a short fiber sheath-core two-component spinning component is provided.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a short fiber sheath-core two-component spinning assembly, including a sand cavity plate, a distribution assembly and a spinneret arranged in sequence, the distribution assembly includes a distribution plate 1, a distribution plate 2, a distribution plate 3 and a distribution plate 4 arranged in sequence; the sand cavity plate has a first material cavity and a second material cavity, the first material cavity and the second material cavity are independent of each other, the first material cavity is used to accommodate a first component material, and the second material cavity is used to accommodate a second component material;

[0005] A third material chamber and a fourth material chamber that are independent of each other are arranged between the first distribution plate and the second distribution plate, the third material chamber and the first material chamber are arranged correspondingly and are connected to each other, and the fourth material chamber and the second material chamber are arranged correspondingly and are connected to each other;

[0006] A plurality of mutually independent fifth and sixth material cavities are arranged between the distribution plate 2 and the distribution plate 3, the plurality of the fifth and sixth material cavities are arranged radially along the distribution component, the plurality of the fifth and sixth material cavities are distributed at intervals along the circumference, the fifth material cavity is arranged between two adjacent sixth material cavities, the fifth material cavity is communicated with the third material cavity, and the sixth material cavity is communicated with the fourth material cavity;

[0007] A plurality of mutually independent seventh and eighth material cavities are arranged between the distribution plate three and the distribution plate four, and the plurality of the seventh and eighth material cavities are annular structures arranged from outside to inside, the seventh material cavity is arranged between two adjacent eighth material cavities, each of the fifth material cavities is communicated with each of the seventh material cavities, and each of the sixth material cavities is communicated with each of the eighth material cavities;

[0008] A ninth material chamber is provided between the distribution plate four and the spinneret, and several of the eighth material chambers are connected to the ninth material chamber. A guide column is provided on the distribution plate four. A spinneret hole is provided at the end of the spinneret away from the distribution plate four. A guide hole is provided at the end of the spinneret close to the distribution plate four. One end of the guide hole is connected to the spinneret hole. The flow area of ​​the guide hole is larger than the flow area of ​​the spinneret hole. The other end of the guide hole is connected to the ninth material chamber. One end of the guide column extends into the guide hole. There is a gap between the guide column and the guide hole. A ninth through hole for connecting the seventh material chamber to the guide hole is provided on the guide column. Compared with the prior art, this scheme forms a skin-core structure by distributing the first group of materials and the second group of materials multiple times through multiple layers of distribution components stacked in sequence. It has the advantages of reasonable design mechanism, convenient maintenance, long service life, and good coating effect.

[0009] In order to facilitate the distinction between the first component material and the second component material, in some preferred embodiments, the first material cavity is annular in structure, and the second material cavity is located inside the first material cavity. By setting the first material cavity in an annular shape and the second material cavity in the first material cavity, the first component material and the second component material can be clearly distinguished.

[0010] In order to ensure the conveying pressure of the material in the spinning assembly and prevent the material from being separated between the spinneret, the fourth distribution plate, the third distribution plate and the second distribution plate due to excessive pressure, some preferred embodiments are that the spinneret, the fourth distribution plate, the third distribution plate and the second distribution plate are fixedly connected to each other. By fixing the spinneret, the fourth distribution plate, the third distribution plate and the second distribution plate to each other, the pressure of the material between the spinneret, the fourth distribution plate, the third distribution plate and the second distribution plate is ensured, and the conveying pressure of the material on the spinning assembly is also ensured.

[0011] In order to realize the mutually fixed connection between the spinneret, the distribution plate four, the distribution plate three and the distribution plate two, some preferred embodiments include an inner pressure ring, the spinneret is provided with a first mounting hole, the distribution plate four is provided with a second mounting hole, the distribution plate three is provided with a third mounting hole, the distribution plate two is provided with a fourth mounting hole, the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole are arranged correspondingly, one end of the inner pressure ring is provided with a boss matching the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, a limited position shoulder is arranged between the boss and the inner pressure ring, the boss is arranged in the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole and is mutually fixedly connected by screws, and the limited position shoulder is arranged on the spinneret. The inner pressure ring is arranged in the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, and the inner pressure ring is mutually fixed with the distribution plate two by screws, so as to realize the mutually fixed connection between the spinneret, the distribution plate four, the distribution plate three and the distribution plate two.

[0012] In order to prevent radial displacement between the distribution plate 1 and the distribution plate 2, in some preferred embodiments, a first radial limiting mechanism is provided between the distribution plate 1 and the distribution plate 2, and the first radial limiting mechanism is used to limit radial displacement between the distribution plate 1 and the distribution plate 2.

[0013] In order to realize the first radial displacement mechanism, some preferred embodiments include the first radial limiting mechanism comprising a first pin shaft, the second distribution plate is provided with a first pin hole, the first pin hole matches the first pin shaft, the first pin shaft is arranged on the first distribution plate, and the first pin shaft is arranged in the first pin hole.

[0014] In order to prevent radial displacement between the distribution plate 1 and the sand cavity plate, in some preferred embodiments, a second radial limiting mechanism is provided between the distribution plate 1 and the sand cavity plate, and the second radial limiting mechanism is used to limit radial displacement between the distribution plate 1 and the sand cavity plate.

[0015] In order to realize the second radial displacement mechanism, some preferred embodiments are that the second radial limiting mechanism includes a second pin shaft, the second distribution plate is provided with a second pin hole, the second pin hole matches the second pin shaft, the second pin shaft is arranged on the distribution plate one, and the second pin shaft is arranged in the second pin hole.

[0016] Preferably, some embodiments further include a feed plate and a shell, wherein the shell is provided with a accommodating cavity, the sand cavity plate, the distribution assembly and the spinneret are arranged in the accommodating cavity, the feed plate cover is provided on the shell and restricts the sand cavity plate, the distribution assembly and the spinneret between the shell and the feed plate, and the feed plate is provided with a first feed channel and a second feed channel, the first feed channel is connected to the first feed cavity, and the second feed channel is connected to the second feed cavity.

[0017] In some preferred embodiments, a third radial limiting mechanism is provided between the distribution assembly and the shell, and the third radial limiting mechanism is used to limit the radial displacement of the distribution assembly in the shell. The third radial limiting mechanism includes a third pin shaft provided on it, and the shell is provided with a third limiting groove along its axial direction, and the third pin shaft is arranged in the third limiting groove.

[0018] The beneficial effect of the utility model is that when the short fiber sheath-core two-component spinning assembly of the utility model is in use, the first group of materials and the second group of materials are repeatedly distributed through multiple layers of distribution components stacked in sequence to form a sheath-core structure, which has the advantages of reasonable design structure, convenient maintenance, long service life, good coating effect, etc., avoiding the problems of complex structure of existing spinning components, which lead to cumbersome installation, inconvenient maintenance, poor sheath-core coating effect, and short service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 The front view of the utility model;

[0022] Figure 3 A top view of the utility model;

[0023] Figure 4 yes Figure 3 Middle AA section view;

[0024] Figure 5 yes Figure 4 A partial enlarged view of B in the middle;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the sand cavity plate, distribution assembly and spinneret of the utility model;

[0026] Figure 7 This is a front view of the sand cavity plate, distribution assembly and spinneret of the utility model;

[0027] Figure 8 It is a top view of the sand cavity plate, distribution assembly and spinneret in the utility model;

[0028] Fig. 9 yes Figure 7 Middle CC section view;

[0029] Fig.10 yes Fig. 9 A partial enlarged view of D in the middle;

[0030] Fig.11 It is a three-dimensional structural schematic diagram of the distribution plate 4 in the utility model;

[0031] Fig.12 It is a front view of the distribution plate 4 in the utility model;

[0032] Fig.13 It is a top view of the distribution plate 4 in the utility model;

[0033] Fig.14 It is a three-dimensional structural schematic diagram of the distribution plate three in the utility model;

[0034] Fig.15 It is a top view of the distribution plate three in the utility model.

[0035] In the figure: 1, sand cavity plate, 2, distribution assembly, 3, spinneret, 4, distribution plate one, 5, distribution plate two, 6, distribution plate three, 7, distribution plate four, 8, first material cavity, 9, second material cavity, 10, third material cavity, 11, fourth material cavity, 12, fifth material cavity, 13, sixth material cavity, 14, seventh material cavity, 15, eighth material cavity, 16, ninth material cavity, 17, guide column, 18, guide hole, 19, ninth through hole, 20, inner pressure ring, 21, screw, 22, first pin shaft, 23, second pin shaft, 24, feed plate, 25, shell, 26, first feed channel, 27, second feed channel, 28, third pin shaft, 29, third limiting groove, 30, spinneret hole. DETAILED DESCRIPTION

[0036] The utility model is further described in detail below in conjunction with the embodiments:

[0037] The present invention is not limited to the following specific implementations. A person skilled in the art can implement the present invention in a variety of other specific implementations according to the content disclosed in the present invention, or any design structure and idea of ​​the present invention with simple changes or modifications shall fall within the protection scope of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0038] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] like Figure 1-15 As shown, a staple fiber sheath-core bicomponent spinning assembly comprises a feed plate 24, a sand cavity plate 1, a distribution assembly 2, a spinneret 3 and a housing 25 which are arranged in sequence;

[0041] The sand cavity plate 1 is provided with a first cavity 8 and a second cavity 9, which are independent of each other. The first cavity 8 is annular in structure, and the second cavity 9 is located in the first cavity 8 and is cylindrical in shape. The cavity is used to accommodate the first component material, and the second cavity 9 is used to accommodate the second component material. Filters are provided in the first cavity 8 and the second cavity 9.

[0042] The distribution assembly 2 includes a distribution plate 1 4, a distribution plate 2 5, a distribution plate 3 6 and a distribution plate 4 7 which are stacked in sequence;

[0043] A third material chamber 10 and a fourth material chamber 11 are arranged between the distribution plate 1 4 and the distribution plate 2 5. The third material chamber 10 and the fourth material chamber 11 are independent of each other, wherein the third material chamber 10 and the first material chamber 8 are arranged correspondingly and are connected to each other through the first through hole on the distribution plate 1 4, and the fourth material chamber 11 and the second material chamber 9 are arranged correspondingly and are connected to each other through the second through hole on the distribution plate 1 4;

[0044] A plurality of fifth material chambers 12 and a plurality of sixth material chambers 13 are arranged between the distribution plate 2 5 and the distribution plate 3 6. The plurality of fifth material chambers 12 and the plurality of sixth material chambers 13 are independent of each other, and the plurality of fifth material chambers 12 and the plurality of sixth material chambers 13 are arranged radially along the distribution component 2. The plurality of fifth material chambers 12 and the plurality of sixth material chambers 13 are spaced and evenly distributed along the circumference. The fifth material chamber 12 is arranged between two adjacent sixth material chambers 13. The fifth material chamber 12 and the third material chamber 10 are connected through the third through hole on the distribution plate 2 5, and the sixth material chamber 13 and the fourth material chamber 11 are connected through the fourth through hole on the distribution plate 2 5.

[0045] A plurality of seventh material chambers 14 and eighth material chambers 15 are arranged between the distribution plate three 6 and the distribution plate four 7. The plurality of seventh material chambers 14 and the eighth material chambers 15 are independent of each other. The plurality of seventh material chambers 14 and the eighth material chambers 15 are coaxial annular structures arranged from outside to inside. The seventh material chamber 14 is arranged between two adjacent eighth material chambers 15. Each fifth material chamber 12 is provided with the same number of fifth through holes as the seventh material chamber 14. The five fifth through holes are connected to the corresponding seventh material chambers 14 from inside to outside in sequence, so that each fifth material chamber 12 is connected to each seventh material chamber 14 respectively. Each sixth material chamber 13 is provided with the same number of sixth through holes as the eighth material chamber 15. The five sixth through holes are connected to the corresponding eighth material chamber 15 from inside to outside in sequence, so that each sixth material chamber 13 is connected to each eighth material chamber 15 respectively.

[0046] A ninth material chamber 16 is provided between the distribution plate 297 and the spinneret 3, and a plurality of eighth material chambers 15 are connected to the ninth material chamber 16 through the eighth through hole on the distribution plate 297. A guide column 17 is provided on the distribution plate 297. A spinneret hole 30 is provided at one end of the spinneret 3 away from the distribution plate 297. A guide hole 18 is provided at one end of the spinneret 3 close to the distribution plate 297. One end of the guide hole 18 is connected to the spinneret hole 30. The flow area of ​​the guide hole 18 is larger than the flow area of ​​the spinneret hole 30. The other end of the guide hole 18 is connected to the ninth material chamber 16. One end of the guide column 17 extends into the guide hole 18. There is a gap between the guide column 17 and the guide hole 18. A ninth through hole for connecting the seventh material chamber 14 with the guide hole 18 is provided on the guide column 17.

[0047] The shell 25 is provided with a accommodating cavity, in which the sand cavity plate 1, the distribution assembly 2 and the spinneret 3 are arranged. The feed plate 24 is covered on the shell 25 and restricts the sand cavity plate 1, the distribution assembly 2 and the spinneret 3 between the shell 25 and the feed plate 24. The feed plate 24 is provided with a first feed channel 26 and a second feed channel 27. The first feed channel 26 is connected to the first feed cavity 8, and the second feed channel 27 is connected to the second feed cavity 9.

[0048] It also includes an inner pressure ring 20, a first mounting hole is opened on the spinneret 3, a second mounting hole is opened on the distribution plate four 7, a third mounting hole is opened on the distribution plate three 6, and a fourth mounting hole is opened on the distribution plate two 5. The first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole are arranged correspondingly, and one end of the inner pressure ring 20 is provided with a boss matching the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, and a limited position shoulder is arranged between the boss and the inner pressure ring 20, and the boss is arranged in the first mounting hole, the second mounting hole and the third mounting hole, so as to realize the mutually fixed connection between the spinneret 3, the distribution plate four 7, the distribution plate three 6 and the distribution plate two 5.

[0049] A first radial limiting mechanism is arranged between distribution plate 1 4 and distribution plate 2 5, and the first radial limiting mechanism is used to limit the radial displacement between distribution plate 1 4 and distribution plate 2 5. The first radial limiting mechanism includes a first pin shaft 22, and distribution plate 2 5 is provided with a first pin hole, and the first pin hole matches the first pin shaft 22. The first pin shaft 22 is arranged on distribution plate 1 4, and the first pin shaft 22 is arranged in the first pin hole.

[0050] A second radial limiting mechanism is arranged between the distribution plate 1 4 and the sand chamber plate 1, and the second radial limiting mechanism is used to limit the radial displacement between the distribution plate 1 4 and the sand chamber plate 1, and the second radial limiting mechanism includes a second pin shaft 23, and the distribution plate 2 5 is provided with a second pin hole, and the second pin hole matches the second pin shaft 23, and the second pin shaft 23 is arranged on the distribution plate 1 4, and the second pin shaft 23 is arranged in the second pin hole.

[0051] A third radial limiting mechanism is arranged between the distribution component 2 and the shell 25, and the third radial limiting mechanism is used to limit the radial displacement of the distribution component 2 in the shell 25. The third radial limiting mechanism includes a third pin shaft 28 arranged on it, and the shell 25 is provided with a third limiting groove 29 along its axial direction, and the third pin shaft 28 is arranged in the third limiting groove 29.

[0052] When the above-mentioned short fiber sheath-core two-component spinning assembly is in use, the first feed channel 26 on the feed plate 24 conveys the first component material into the first feed cavity 8, and the second feed channel 27 on the feed plate 24 conveys the second component material into the second feed cavity 9. In this embodiment, the first component material is the core layer and is mainly made of polypropylene or polyethylene terephthalate with a high melting point. The melting point of polypropylene is 165°C, and the melting point of polyethylene terephthalate is 265°C. The second component material is the sheath layer and is made of polyethylene with a lower melting point. The melting point of polyethylene is 130°C. The first component material passes through the first feed cavity 8, the third feed cavity 10, the fifth feed cavity 12, the seventh feed cavity 14 and the guide hole 18 to form a core layer, and the second component material passes through the second feed cavity 9, the fourth feed cavity 11, the sixth feed cavity 13, the eighth feed cavity 15 and the ninth feed cavity 16 to form a sheath layer.

[0053] The above-mentioned ideal embodiments of the utility model are inspirations. Through the above-mentioned description, relevant staff can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of the utility model is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A staple fiber sheath-core bicomponent spinning assembly, comprising a sand cavity plate (1), a distribution assembly (2) and a spinneret (3) arranged in sequence, characterized in that: The distribution assembly (2) comprises a distribution plate 1 (4), a distribution plate 2 (5), a distribution plate 3 (6) and a distribution plate 4 (7) which are stacked in sequence; the sand cavity plate (1) has a first material cavity (8) and a second material cavity (9), the first material cavity (8) and the second material cavity (9) are independent of each other, the first material cavity (8) is used to contain a first component material, and the second material cavity (9) is used to contain a second component material; A third material chamber (10) and a fourth material chamber (11) which are independent of each other are arranged between the first distribution plate (4) and the second distribution plate (5); the third material chamber (10) and the first material chamber (8) are arranged correspondingly and are interconnected, and the fourth material chamber (11) and the second material chamber (9) are arranged correspondingly and are interconnected; A plurality of mutually independent fifth material chambers (12) and sixth material chambers (13) are arranged between the distribution plate 2 (5) and the distribution plate 3 (6); the plurality of the fifth material chambers (12) and the sixth material chambers (13) are arranged radially along the distribution component (2); the plurality of the fifth material chambers (12) and the sixth material chambers (13) are distributed at intervals along the circumference; the fifth material chamber (12) is arranged between two adjacent sixth material chambers (13); the fifth material chamber (12) is connected to the third material chamber (10); and the sixth material chamber (13) is connected to the fourth material chamber (11); A plurality of mutually independent seventh material chambers (14) and eighth material chambers (15) are arranged between the distribution plate three (6) and the distribution plate four (7); the plurality of the seventh material chambers (14) and the eighth material chambers (15) are annular structures arranged from outside to inside; the seventh material chamber (14) is arranged between two adjacent eighth material chambers (15); each of the fifth material chambers (12) is respectively communicated with each of the seventh material chambers (14); and each of the sixth material chambers (13) is respectively communicated with each of the eighth material chambers (15); A ninth material chamber (16) is provided between the distribution plate four (7) and the spinneret (3), and a plurality of the eighth material chambers (15) are connected to the ninth material chamber (16). A guide column (17) is provided on the distribution plate four (7), and a spinneret hole (30) is provided at one end of the spinneret (3) away from the distribution plate four (7). A guide hole (18) is provided at one end of the spinneret (3) close to the distribution plate four (7), and one end of the guide hole (18) is connected to the spinneret. The guide hole (18) is connected to the spinneret hole (30), the flow area of ​​the guide hole (18) is larger than the flow area of ​​the spinneret hole (30), the other end of the guide hole (18) is connected to the ninth material chamber (16), one end of the guide column (17) extends into the guide hole (18), a gap is provided between the guide column (17) and the guide hole (18), and a ninth through hole (19) is provided on the guide column (17) for connecting the seventh material chamber (14) with the guide hole (18).

2. A staple fiber sheath-core bicomponent spinning assembly according to claim 1, characterized in that: The first material cavity (8) is an annular structure, and the second material cavity (9) is located inside the first material cavity (8).

3. A staple fiber sheath-core bicomponent spinning assembly according to claim 1, characterized in that: The spinneret (3), distribution plate four (7), distribution plate three (6) and distribution plate two (5) are fixedly connected to each other.

4. A staple fiber sheath-core bicomponent spinning assembly according to claim 3, characterized in that: It includes an inner pressure ring (20), a first mounting hole is opened on the spinneret (3), a second mounting hole is opened on the distribution plate four (7), a third mounting hole is opened on the distribution plate three (6), and a fourth mounting hole is opened on the distribution plate two (5), the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole are arranged correspondingly, one end of the inner pressure ring (20) is provided with a boss matching the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, a limiting shoulder is arranged between the boss and the inner pressure ring (20), the boss is arranged in the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole and is fixedly connected to each other by screws (21), and the limiting shoulder is abutted against the spinneret (3).

5. A staple fiber sheath-core bicomponent spinning assembly according to claim 1, characterized in that: A first radial limiting mechanism is provided between the distribution plate 1 (4) and the distribution plate 2 (5), and the first radial limiting mechanism is used to limit the radial displacement between the distribution plate 1 (4) and the distribution plate 2 (5).

6. A staple fiber sheath-core bicomponent spinning assembly according to claim 5, characterized in that: The first radial limiting mechanism comprises a first pin shaft (22), the second distribution plate (5) is provided with a first pin hole, the first pin hole matches the first pin shaft (22), the first pin shaft (22) is arranged on the first distribution plate (4), and the first pin shaft (22) is arranged in the first pin hole.

7. A staple fiber sheath-core bicomponent spinning assembly according to claim 1, characterized in that: A second radial limiting mechanism is provided between the distribution plate 1 (4) and the sand chamber plate (1), and the second radial limiting mechanism is used to limit the radial displacement between the distribution plate 1 (4) and the sand chamber plate (1).

8. A staple fiber sheath-core bicomponent spinning assembly according to claim 7, characterized in that: The second radial limiting mechanism comprises a second pin shaft (23), the second distribution plate (5) is provided with a second pin hole, the second pin hole matches the second pin shaft (23), the second pin shaft (23) is arranged on the first distribution plate (4), and the second pin shaft (23) is arranged in the second pin hole.

9. A staple fiber sheath-core bicomponent spinning assembly according to claim 1, characterized in that: The invention also includes a feed plate (24) and a shell (25), wherein the shell (25) is provided with a receiving cavity, wherein the sand cavity plate (1), the distribution assembly (2) and the spinneret (3) are arranged in the receiving cavity, wherein the feed plate (24) is covered on the shell (25) and restricts the sand cavity plate (1), the distribution assembly (2) and the spinneret (3) between the shell (25) and the feed plate (24), wherein the feed plate (24) is provided with a first feed channel (26) and a second feed channel, wherein the first feed channel (26) is connected to the first feed cavity (8), and the second feed channel is connected to the second feed cavity (9).

10. A staple fiber sheath-core bicomponent spinning assembly according to claim 9, characterized in that: A third radial limiting mechanism is provided between the distribution assembly (2) and the shell (25), and the third radial limiting mechanism is used to limit the radial displacement of the distribution assembly (2) in the shell (25). The third radial limiting mechanism comprises a third pin shaft (28) provided thereon, and the shell (25) is provided with a third limiting groove (29) along its axial direction, and the third pin shaft (28) is arranged in the third limiting groove (29).

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