Spinneret plate for quick-dry composite elastic fibers

Abstract

The utility model belongs to the technical field of chemical fiber production equipment accessories, and particularly relates to a spinneret plate for quick-dry composite elastic fibers, which is characterized in that a plurality of first spinneret orifice groups and second spinneret orifice groups are arranged on the surface of the spinneret plate; the first spinneret hole sets and the second spinneret hole sets are arranged at equal intervals in the circumferential direction of the spinneret plate. The first spinneret orifice group forms an arrangement located on an outer ring of the surface of the spinneret plate, and the second spinneret orifice group forms an arrangement located on an inner ring of the surface of the spinneret plate. The spinneret plate designed by the utility model is characterized in that the cross section of the processed fiber is cross-like, and each ribbon is provided with four grooves, so that the moisture-conducting and quick-drying functions are obviously enhanced. The spinneret plate is exquisite in design, simple in structure, capable of being machined through the prior art and low in cost. In addition, the spinneret plate can ensure that the two polymers are large in contact area and firm in bonding when being bonded at a spinneret plate opening, effectively prevents broken filaments and has good spinnability.

Description

Technical Field

[0001] The utility model belongs to the technical field of accessories for chemical fiber production equipment, and particularly relates to a spinneret plate for quick-drying composite elastic fibers. Background Art

[0002] To improve the hydrophilicity and quick-drying property of composite elastic fibers, PET or PTT is generally used for modification to improve hydrophilicity, and a profiled spinneret plate is used to produce profiled fiber cross-sections to improve moisture conduction and quick-drying property. For example, CN114908437B discloses a moisture-conducting and quick-drying self-crimping elastic fiber and its preparation method and application. The fiber uses polytrimethylene terephthalate and polyethylene terephthalate as raw materials, and by controlling the cross-sectional shape of the composite monofilaments formed by these two materials, significant different changes are achieved. An arc design with multiple grooves and its own contour structure is adopted, and further, the distance from the points on the outer contour line to the centroid of the cross-section and the aspect ratio of the protrusion are controlled, so that the PTT / PET composite fiber of the invention pursues and obtains excellent moisture-conducting and quick-drying properties. However, only half of the invention has a grooved cross-section, and the other half is still circular. The improvement of the quick-drying property is average, and the raw materials are not modified, so it still does not have hydrophilicity and antibacterial properties. There is also the utility model of CN 209652480 U which discloses a profiled spinneret plate for side-by-side composite fibers, adopting a double-cross structure to form a "艹" - shaped cross-section structure, improving the moisture-conducting and quick-drying property. However, because the connecting area between the two components is too small, the processed side-by-side bicomponent fibers are prone to cracking, resulting in a reduction or even loss of elasticity, and the spinnability of the fibers is also affected, increasing the hairiness and breakage rate. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] In order to overcome the shortcomings of the existing spinneret plates for composite elastic fibers in production, the utility model provides a spinneret plate for quick-drying composite elastic fibers, which is used for spinning fibers such as FDY or DTY, and is applied to knitted or woven elastic fabrics without spandex.

[0005] (II) Technical Solutions

[0006] The utility model is realized through the following technical solutions: The utility model provides a spinneret plate for quick-drying composite elastic fibers, and a plurality of first spinneret hole groups and second spinneret hole groups are arranged on the surface of the spinneret plate;

[0007] A plurality of first spinneret hole groups and second spinneret hole groups are arranged at equal intervals along the circumferential direction of the spinneret plate;

[0008] The first spinneret hole groups form an arrangement on the outer ring of the surface of the spinneret plate, and the second spinneret hole groups form an arrangement on the inner ring of the surface of the spinneret plate;

[0009] The number and diameter of the first spinneret hole group and the second spinneret hole group are the same, and the first spinneret hole group and the second spinneret hole group are arranged correspondingly;

[0010] The first spinneret hole group is provided with a first spinneret hole flow trough, a first spinneret hole cylindrical guide hole, a first spinneret hole conical guide hole, and a first spinneret hole spinning micro hole;

[0011] The first spinneret flow groove is arranged on the top surface of the spinneret plate, and the first spinneret micro-hole is arranged on the bottom surface of the spinneret plate;

[0012] The first spinneret flow channel and the first spinneret micropores are connected and communicated with each other through the first spinneret cylindrical guide hole and the first spinneret conical guide hole in sequence;

[0013] The second spinneret hole group has the same structural arrangement as the first spinneret hole group, including a second spinneret hole flow trough, a second spinneret hole cylindrical guide hole, a second spinneret hole conical guide hole and a second spinneret hole spinning microhole;

[0014] Wherein, the distance between the first spinneret flow slot and the second spinneret flow slot is greater than the distance between the first spinneret micropore and the second spinneret micropore;

[0015] The first spinneret micro-hole and the second spinneret micro-hole are both semi-cross shaped, the two semi-cross shaped are identical and symmetrically arranged, and the side surfaces of the two semi-cross shaped in opposite directions are arranged in arc shapes.

[0016] Furthermore, the vertical lengths of the first spinneret microhole and the second spinneret microhole are L1+L2+L3, respectively, and the horizontal lengths are L1+L5. The radius R of the arc is L1=L2 / 2, L2=L3=L4=L5, and the radius R of the arc is 4L2.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The fiber cross section processed by the spinneret designed in the utility model is cross-shaped, and each fiber has four grooves, which has good moisture conduction and quick-drying functions.

[0020] 2. The spinneret designed by the utility model is reasonably designed and relatively simple in structure. The spinneret can be manufactured and processed by using existing technology and has low production cost.

[0021] 3. The spinneret designed by the utility model has a large contact area for the two polymers to bond at the spinneret mouth, the two materials are firmly bonded and will not separate, and the phenomenon of filament hair and breakage is not likely to occur, and the spinnability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0023] Figure 1 is a front view of the spinneret of the present invention;

[0024] Figure 2 is a side cross-sectional view of the spinneret of the present invention;

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 The spinneret of the present invention Figure 3 A magnified view of the spinneret microhole outlet in the middle B direction;

[0027] Figure 5 This is a cross-sectional view of the fiber produced by the spinneret of the present invention.

[0028] The markings in the accompanying drawings are: 1-spinneret, a-first spinneret hole group, b-second spinneret hole group, a1-first spinneret hole flow trough, b1-second spinneret hole flow trough, a2-first spinneret hole cylindrical guide hole, b2-second spinneret hole cylindrical guide hole, a3-first spinneret hole conical guide hole, b3-second spinneret hole conical guide hole, a4-first spinneret hole microhole, b4-second spinneret hole microhole. DETAILED DESCRIPTION

[0029] In this technical solution:

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] Reference Figure 1-4 As shown, the utility model proposes a spinneret for quick-drying composite elastic fibers, and a plurality of first spinneret hole groups a and second spinneret hole groups b are arranged on the surface of the spinneret 1;

[0032] A plurality of first spinneret hole groups a and second spinneret hole groups b are arranged at equal intervals along the circumferential direction of the spinneret plate 1;

[0033] The first spinneret hole group a is arranged in an outer ring on the surface of the spinneret plate 1, and the second spinneret hole group b is arranged in an inner ring on the surface of the spinneret plate 1;

[0034] The first spinneret hole group a and the second spinneret hole group b are set to have the same number and hole diameter, and the first spinneret hole group a and the second spinneret hole group b are set correspondingly;

[0035] The first spinneret hole group a is provided with a first spinneret hole flow groove a1, a first spinneret hole cylindrical guide hole a2, a first spinneret hole conical guide hole a3, and a first spinneret hole spinning micro hole a4;

[0036] The first spinneret flow groove a1 is arranged on the top surface of the spinneret 1, and the first spinneret micro-hole a4 is arranged on the bottom surface of the spinneret 1;

[0037] The first spinneret flow groove a1 and the first spinneret spinning microhole a4 are connected and communicated with each other through the first spinneret cylindrical guide hole a2 and the first spinneret conical guide hole a3 in sequence;

[0038] The second spinneret hole group b has the same structural arrangement as the first spinneret hole group a, including a second spinneret hole flow groove b1, a second spinneret hole cylindrical guide hole b2, a second spinneret hole conical guide hole b3, and a second spinneret hole spinning microhole b4;

[0039] Wherein, the distance between the first spinneret flow slot a1 and the second spinneret flow slot b1 is greater than the distance between the first spinneret spinneret micropore a4 and the second spinneret spinneret micropore b4;

[0040] The first spinneret micro-hole a4 and the second spinneret micro-hole b4 are both semi-cross shaped, the two semi-cross shaped are identical and symmetrically arranged, and the sides of the two semi-cross shaped in opposite directions are arranged in arc shapes;

[0041] The vertical lengths of the first spinneret microhole and the second spinneret microhole are L1+L2+L3, respectively, and the horizontal lengths are L1+L5. The radius of the arc is R, L1=L2 / 2, L2=L3=L4=L5, and the radius of the arc is R=4L2.

[0042] Working principle: Two different polymer melts enter the first spinneret flow slot a1 and the second spinneret flow slot b1 respectively, and are ejected through the first spinneret cylindrical guide hole a2, the first spinneret conical guide hole a3, the first spinneret spinning microhole a4, the second spinneret cylindrical guide hole b2, the second spinneret conical guide hole b3, and the second spinneret spinning microhole b4 to melt and expand, forming a tightly bonded composite elastic fiber outside the hole;

[0043] The composite elastic fiber can be used to spin FDY or DTY fibers and can be used to knit or weave spandex-free elastic fabrics.

[0044] Figure 5 As shown, the cross section of the fiber processed by the spinneret is cross-shaped, and each fiber has four grooves, which has good moisture conduction and quick-drying functions.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A spinneret for quick-drying composite elastic fibers, Features: The surface of the spinneret (1) is provided with a plurality of first spinneret hole groups (a) and second spinneret hole groups (b); A plurality of first spinneret hole groups (a) and a plurality of second spinneret hole groups (b) are arranged at equal intervals along the circumferential direction of the spinneret plate (1); The first spinneret hole group (a) forms an arrangement located in an outer ring on the surface of the spinneret plate (1), and the second spinneret hole group (b) forms an arrangement located in an inner ring on the surface of the spinneret plate (1); The number and diameter of the first spinneret hole group (a) and the second spinneret hole group (b) are the same, and the first spinneret hole group (a) and the second spinneret hole group (b) are arranged correspondingly; The first spinneret hole group (a) is provided with a first spinneret hole flow groove (a1), a first spinneret hole cylindrical guide hole (a2), a first spinneret hole conical guide hole (a3), and a first spinneret hole spinning microhole (a4); The first spinneret hole flow groove (a1) is arranged on the top surface of the spinneret plate (1), and the first spinneret hole spinning microhole (a4) is arranged on the bottom surface of the spinneret plate (1); The first spinneret flow channel (a1) and the first spinneret spinning microhole (a4) are connected and communicated with each other through the first spinneret cylindrical guide hole (a2) and the first spinneret conical guide hole (a3) ​​in sequence; The second spinneret hole group (b) has the same structural arrangement as the first spinneret hole group (a), including a second spinneret hole flow trough (b1), a second spinneret hole cylindrical guide hole (b2), a second spinneret hole conical guide hole (b3) and a second spinneret hole spinning microhole (b4); Wherein, the distance between the first spinneret flow groove (a1) and the second spinneret flow groove (b1) is greater than the distance between the first spinneret spinneret micropore (a4) and the second spinneret spinneret micropore (b4); The first spinneret micropore (a4) and the second spinneret micropore (b4) are both semi-cross shaped, the two semi-cross shaped are identical and symmetrically arranged, and the side surfaces of the two semi-cross shaped in opposite directions are arranged in arc shapes.

2. A spinneret for quick-drying composite elastic fibers according to claim 1, Features: The vertical lengths of the first spinneret micropore (a4) and the second spinneret micropore (b4) are L1+L2+L3, respectively, and the horizontal lengths are L1+L5. The radius of the arc is R, L1=L2 / 2, L2=L3=L4=L5, and the radius of the arc is R=4L2.

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