A gradient temperature control spinneret for melt respinning of aramid waste yarn

Abstract

This utility model relates to the field of aramid waste filament technology, specifically a gradient temperature control spinneret for melt respinning of aramid waste filament. It includes a protective outer ring, a top spinneret, an inner spinneret, and a bottom spinneret. The top, inner, and bottom spinnerets are all installed inside the protective outer ring, and each of the top, inner, and bottom spinnerets has circumferentially through-holes for drawing fibers. This gradient temperature control spinneret for melt respinning of aramid waste filament optimizes the melt respinning process by designing a gradient-decreasing distribution of drawing fibers. Compared to drawing fibers of the same size in traditional technology, the gradient-sized drawing fibers can apply a diameter-reducing force to the waste filament at different stages, avoiding stress concentration caused by large deformation, thereby reducing fiber breakage and improving the stability and production efficiency of the entire melt respinning process.

Description

Technical Field

[0001] This utility model relates to the field of aramid waste filament technology, and in particular to a gradient temperature control spinneret for melting and respinning aramid waste filament. Background Technology

[0002] Aramid waste filaments refer to the waste filamentous materials generated during the production, processing, or use of aramid fibers. Aramid waste filament melt respinning refers to the process of reprocessing waste aramid fibers into spinnable melt through a high-temperature melting process, and then extruding, stretching, and solidifying it through a spinneret to produce recycled fibers.

[0003] The spinnerets used in existing aramid waste yarn melting and respinning processes typically have drawing holes of the same size. This can easily lead to uneven deformation of the yarn during the drawing process, causing stress concentration and increasing the risk of yarn breakage. In addition, the installation of existing spinnerets is prone to inaccurate positioning, causing the drawing plate to shift, which affects the overall drawing effect and product quality. The overall practical effect needs to be improved.

[0004] Therefore, to address the problems of uneven distribution of spinneret drawing holes and inconvenient installation in the melting and respinning of aramid waste yarn, this utility model optimizes the melting and respinning process of aramid waste yarn by setting a gradient-decreasing distribution of drawing holes. Compared with drawing holes of the same size in traditional technology, the gradient-sized drawing holes can apply a diameter reduction force to the waste yarn at different stages, avoiding stress concentration caused by large deformation, thereby reducing the occurrence of yarn breakage. At the same time, through the use of positioning components, the top spinneret, inner spinneret, and bottom spinneret can be stably installed inside the protective outer ring, solving the problem of inaccurate positioning in the traditional spinneret installation process. Utility Model Content

[0005] To overcome the common problems of uneven distribution of spinneret drawing holes and inconvenient installation in the gradient temperature control of aramid waste yarn respinning.

[0006] The technical solution of this utility model is: a gradient temperature control spinneret for melting and respinning aramid waste yarn, including a protective outer ring, a top spinneret, an inner spinneret, and a bottom spinneret. The top spinneret, inner spinneret, and bottom spinneret are all installed inside the protective outer ring. The top spinneret, inner spinneret, and bottom spinneret are all circumferentially provided with drawing holes. The outer side wall of the protective outer ring is provided with anti-slip strips.

[0007] The top spinneret, inner spinneret, and bottom spinneret are all provided with positioning and plugging components on their exteriors, and locking and fastening components are provided on the sides of the positioning and plugging components.

[0008] Preferably, the wire drawing holes are configured as tapered holes, and the size of the wire drawing holes is distributed in a gradient decreasing manner. The diameter of the wire drawing holes located inside the top spinneret is larger than the diameter of the wire drawing holes located inside the inner spinneret, and the diameter of the wire drawing holes located inside the inner spinneret is larger than the diameter of the wire drawing holes located inside the bottom spinneret.

[0009] Preferably, the positioning and insertion assembly includes positioning blocks and positioning slots. Positioning blocks are symmetrically arranged on the outer side walls of the top spinneret, inner spinneret, and bottom spinneret. Two sets of positioning slots are correspondingly opened on the inner side walls of the protective outer ring for sliding installation of the positioning blocks.

[0010] Preferably, the positioning slot is stair-shaped, and the size of the positioning blocks is distributed in a gradient decreasing manner. The length of the positioning block located outside the top spinneret is greater than the length of the positioning block located outside the inner spinneret, and the length of the positioning block located outside the inner spinneret is greater than the length of the positioning block located outside the bottom spinneret.

[0011] Preferably, the locking fastening assembly includes positioning T-blocks and positioning T-grooves. Positioning T-blocks are symmetrically arranged on the outer side walls of the top spinneret, inner spinneret, and bottom spinneret. Two sets of positioning T-grooves are correspondingly opened on the inner side walls of the protective outer ring for sliding installation of the positioning T-blocks.

[0012] Preferably, the top outer walls of the three sets of positioning T-shaped blocks are all provided with positioning cylindrical grooves, and fastening bolts are inserted into the interior of the three sets of positioning cylindrical grooves. The bottom inner wall of the protective outer ring located at the position of the positioning T-shaped groove is provided with a cylindrical thread groove for the threaded installation of the fastening bolts.

[0013] Preferably, the fastening bolt is installed in an embedded structure, and a cylindrical placement groove for placing the fastening bolt is correspondingly opened inside the positioning T-shaped block located on the side of the top spinneret plate, and the internal space of the cylindrical placement groove is connected to the internal space of the positioning cylindrical groove.

[0014] The beneficial effects of this utility model are:

[0015] 1. The gradient temperature control spinneret for melt respinning of aramid waste yarn optimizes the melt respinning process of aramid waste yarn by setting a gradient decreasing distribution of drawing holes. Compared with the drawing holes of the same size in traditional technology, the drawing holes of gradient size can apply a diameter reduction force to the waste yarn at different stages, avoiding stress concentration caused by large deformation, thereby reducing the occurrence of yarn breakage, improving the stability and production efficiency of the entire melt respinning process, and improving the quality of regenerated fiber by controlling the tensile force at each stage.

[0016] 2. The gradient temperature control spinneret for melting and respinning aramid waste yarn, when in use, allows the top spinneret, inner spinneret, and bottom spinneret to be securely installed within the protective outer ring through the cooperation of positioning components. This solves the problem of inaccurate positioning in the traditional spinneret installation process and avoids unstable yarn drawing effect caused by installation misalignment. At the same time, the embedded structure of the fastening bolts optimizes the overall disassembly and maintenance process of the device, making the installation and disassembly of the internal components of the device easier. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention.

[0018] Figure 2 The diagram shown is a three-dimensional structural schematic of the wire drawing hole of this utility model;

[0019] Figure 3 The diagram shown is a three-dimensional structural schematic of the protective outer ring of this utility model.

[0020] Figure 4 The diagram shown is a three-dimensional structural illustration of the positioning block and positioning slot of this utility model.

[0021] Figure 5 The diagram shown is a three-dimensional structural diagram of the positioning T-block and positioning T-slot of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Protective outer ring; 2. Top spinneret; 3. Inner spinneret; 4. Bottom spinneret; 5. Wire drawing hole; 6. Positioning insertion assembly; 601. Positioning block; 602. Positioning slot; 7. Locking fastening assembly; 701. Positioning T-block; 702. Positioning T-slot; 703. Positioning cylindrical slot; 704. Fastening bolt; 705. Cylindrical threaded groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5This utility model provides a technical solution: a gradient temperature control spinneret for melting and respinning aramid waste yarn, including a protective outer ring 1, a top spinneret 2, an inner spinneret 3, and a bottom spinneret 4. The top spinneret 2, the inner spinneret 3, and the bottom spinneret 4 are all installed inside the protective outer ring 1. The top spinneret 2, the inner spinneret 3, and the bottom spinneret 4 are all circumferentially provided with drawing holes 5. The outer side wall of the protective outer ring 1 is provided with anti-slip strips.

[0025] The top spinneret 2, the inner spinneret 3, and the bottom spinneret 4 are all provided with positioning and insertion components 6 on their exteriors, and locking and fastening components 7 are provided on the side of the positioning and insertion components 6.

[0026] The wire drawing hole 5 is set as a conical hole structure, and the size of the wire drawing hole 5 is distributed in a gradient decreasing manner. The diameter of the wire drawing hole 5 located inside the top spinneret 2 is larger than the diameter of the wire drawing hole 5 located inside the inner spinneret 3, and the diameter of the wire drawing hole 5 located inside the inner spinneret 3 is larger than the diameter of the wire drawing hole 5 located inside the bottom spinneret 4.

[0027] This section provides a detailed description of the dimensions and shapes of the drawing holes 5 inside the top spinneret 2, inner spinneret 3, and bottom spinneret 4. This design ensures that the overall drawing holes 5 are distributed in a decreasing manner, allowing the metal wire to withstand only a suitable reduction in diameter at each stage during the drawing process. This avoids stress concentration caused by large deformation in a single operation, reducing the risk of wire breakage. In this way, the gradient decreasing drawing operation can better process the molten aramid waste filament. At the same time, the decreasing hole diameter design not only affects the flowability of the molten waste filament but also controls the tensile force at each stage by controlling the reduction in diameter of the molten filament in different temperature ranges, thereby optimizing the melt respinning process.

[0028] The positioning and plugging assembly 6 includes positioning blocks 601 and positioning slots 602. Positioning blocks 601 are symmetrically arranged on the outer side walls of the top spinneret 2, the inner spinneret 3, and the bottom spinneret 4. Two sets of positioning slots 602 are correspondingly opened on the inner side walls of the protective outer ring 1 for sliding installation of the positioning blocks 601. The positioning slots 602 are stair-shaped. The size of the positioning blocks 601 is distributed in a gradient decreasing manner. The length of the positioning blocks 601 located outside the top spinneret 2 is greater than the length of the positioning blocks 601 located outside the inner spinneret 3. The length of the positioning blocks 601 located outside the inner spinneret 3 is greater than the length of the positioning blocks 601 located outside the bottom spinneret 4.

[0029] The dimensions of the positioning blocks 601 on the outer sides of the top spinneret 2, inner spinneret 3, and bottom spinneret 4 are described in detail here, so that each set of positioning blocks 601 can correspond to the height of the groove inside the positioning slot 602 in sequence. This ensures that the top spinneret 2, inner spinneret 3, and bottom spinneret 4 are securely installed, while also ensuring that there are gaps between the installation positions of the top spinneret 2, inner spinneret 3, and bottom spinneret 4.

[0030] The locking fastening assembly 7 includes positioning T-shaped blocks 701 and positioning T-shaped grooves 702. Positioning T-shaped blocks 701 are symmetrically arranged on the outer side walls of the top spinneret 2, inner spinneret 3 and bottom spinneret 4. Two sets of positioning T-shaped grooves 702 for sliding installation of positioning T-shaped blocks 701 are correspondingly opened on the inner side walls of the protective outer ring 1. Positioning columnar grooves 703 are aligned and penetrated on the top outer walls of the three sets of positioning T-shaped blocks 701. Fastening bolts 704 are inserted into the interior of the three sets of positioning columnar grooves 703. A columnar threaded groove 705 for threaded installation of fastening bolts 704 is correspondingly opened on the inner bottom wall of the protective outer ring 1 at the position of the positioning T-shaped groove 702. The fastening bolts 704 are installed in an embedded structure. A columnar placement groove for placing fastening bolts 704 is correspondingly opened inside the positioning T-shaped block 701 located on the side of the top spinneret 2, and the columnar placement groove is connected to the internal space of the positioning columnar groove 703.

[0031] The positioning T-block 701 and positioning T-slot 702 here serve to position and install the top spinneret 2, inner spinneret 3 and bottom spinneret 4. The positioning T-slot 702 is used to limit the insertion of the three sets of spinnerets, so as to achieve a faster positioning and installation process and the installation position is not easy to shift.

[0032] Working principle: See Figures 1-5 As shown, when it is necessary to install the top spinneret 2, the inner spinneret 3 and the bottom spinneret 4 into the interior of the protective outer ring 1, the bottom spinneret 4, the inner spinneret 3 and the top spinneret 2 should be placed into the interior of the protective outer ring 1 in sequence according to the length of the positioning T-block 701.

[0033] During the installation of the top spinneret 2, inner spinneret 3 and bottom spinneret 4, the plate body needs to be adjusted to a suitable position and then the positioning T-shaped block 701 on its side needs to be pushed into the corresponding positioning T-shaped groove 702. Then, following the trajectory guidance of the positioning T-shaped groove 702, the three sets of positioning T-shaped blocks 701 are thus inserted into the positioning slots 602 at different heights.

[0034] After the top spinneret 2, inner spinneret 3, and bottom spinneret 4 are placed, insert the fastening bolt 704 vertically downwards into the three sets of cylindrical threaded grooves 705. When it moves to the bottommost cylindrical threaded groove 705, rotate the fastening bolt 704 to tighten it into the cylindrical threaded groove 705 to complete the fastening installation of the three sets of positioning T-blocks 701. This completes the fastening installation of the top spinneret 2, inner spinneret 3, and bottom spinneret 4 with the protective outer ring 1. Subsequent disassembly is done in the same way.

[0035] It should be noted that the top spinneret 2 is installed at the top of the device, and the cross-head screw holes of the fastening bolts 704 should not be exposed during installation to avoid waste filament clogging the screw holes and affecting the normal operation of subsequent disassembly processes. As for how to install the outer protective ring 1, top spinneret 2, inner spinneret 3, and bottom spinneret 4 into the corresponding aramid waste filament melt spinning equipment, refer to the existing installation methods. There are no modifications to them, and they are existing conventional operating techniques, so they will not be described in detail here.

[0036] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gradient temperature control spinneret for melt re-spinning of aramid waste threads, comprising a protective outer ring (1), a top spinneret (2), an inner spinneret (3) and a bottom spinneret (4), characterized in that: The top spinneret (2), inner spinneret (3) and bottom spinneret (4) are all installed inside the protective outer ring (1). The top spinneret (2), inner spinneret (3) and bottom spinneret (4) are all circumferentially connected with wire drawing holes (5). The outer side wall of the protective outer ring (1) is provided with anti-slip strips. The top spinneret (2), inner spinneret (3) and bottom spinneret (4) are all provided with positioning and plugging components (6), and the side of the positioning and plugging components (6) is provided with locking and fastening components (7).

2. The gradient temperature control spinneret for melt re-spinning of aramid waste yarns according to claim 1, characterized in that: The wire drawing hole (5) is set as a conical hole structure, and the size of the wire drawing hole (5) is distributed in a gradient decreasing manner. The diameter of the wire drawing hole (5) located inside the top spinneret (2) is larger than the diameter of the wire drawing hole (5) located inside the inner spinneret (3), and the diameter of the wire drawing hole (5) located inside the inner spinneret (3) is larger than the diameter of the wire drawing hole (5) located inside the bottom spinneret (4).

3. The gradient temperature control spinneret for melt re-spinning of aramid waste threads according to claim 1, characterized in that: The positioning and plugging assembly (6) includes a positioning block (601) and a positioning slot (602). The outer side walls of the top spinneret (2), the inner spinneret (3) and the bottom spinneret (4) are symmetrically provided with positioning blocks (601). The inner side wall of the protective outer ring (1) is provided with two sets of positioning slots (602) for the positioning blocks (601) to slide and install.

4. The gradient temperature control spinneret for melt re-spinning of aramid waste according to claim 3, characterized in that: The positioning slot (602) is stair-shaped, and the size of the positioning block (601) is distributed in a gradient decreasing manner. The length of the positioning block (601) located outside the top spinneret (2) is greater than the length of the positioning block (601) located outside the inner spinneret (3), and the length of the positioning block (601) located outside the inner spinneret (3) is greater than the length of the positioning block (601) located outside the bottom spinneret (4).

5. The gradient temperature control spinneret for melt re-spinning of aramid waste according to claim 1, characterized in that: The locking fastening assembly (7) includes a positioning T-block (701) and a positioning T-groove (702). The outer side walls of the top spinneret (2), inner spinneret (3) and bottom spinneret (4) are symmetrically provided with positioning T-blocks (701). The inner side wall of the protective outer ring (1) is provided with two sets of positioning T-grooves (702) for sliding installation of the positioning T-blocks (701).

6. The gradient temperature control spinneret for melt respinning of aramid waste yarn according to claim 5, characterized in that: The top outer walls of the three sets of positioning T-shaped blocks (701) are all aligned and have through-hole positioning cylindrical grooves (703). The interiors of the three sets of positioning cylindrical grooves (703) are all fitted with fastening bolts (704). The bottom inner wall of the protective outer ring (1) located at the position of the positioning T-shaped groove (702) is provided with a cylindrical threaded groove (705) for threaded installation of the fastening bolts (704).

7. A gradient temperature control spinneret for melt respinning of aramid waste yarn according to claim 6, characterized in that: The fastening bolt (704) is installed in an embedded structure. The positioning T-shaped block (701) located on the side of the top spinneret plate (2) has a corresponding cylindrical placement groove for placing the fastening bolt (704), and the cylindrical placement groove is connected to the internal space of the positioning cylindrical groove (703).

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