A device suitable for multi-component embedded distribution arrangement of DTY spandex filament roving

Abstract

The application belongs to the technical field of spinning device, and discloses a device suitable for DTY spandex filament roving multi-component embedded distribution arrangement, which comprises a roving frame, a drafting assembly, a trumpet assembly, a filament frame, a buncher, a twisting and winding assembly and a tension adjusting assembly; a plurality of roving bobbins are installed on the roving frame, and a plurality of DTY spandex filament bobbins are installed on the filament frame; the trumpet assembly comprises a rear trumpet for roving feeding, a guide trumpet for filament straightening and a plying trumpet for roving and filament compounding; the drafting assembly comprises a plurality of drafting rollers arranged in sequence along the roving running direction and used for step-by-step drafting of the roving. Through symmetrical and alternate arrangement of the multiple rovings and the filaments, a "multi-core multi-sheath" composite structure is formed, the core filaments are good in centralization and are not easy to deviate and expose, the covering fastness is improved, the breaking strength and wear resistance are significantly improved, and the device is suitable for high-strength and high-wear-resistant industrial yarns or high-grade home textile fabrics.

Description

Technical Field

[0001] This invention relates to the field of spinning equipment technology, and more specifically, to an apparatus suitable for the multi-component embedded distribution arrangement of DTY spandex filament roving. Background Technology

[0002] DTY spandex filament combines the high elasticity of spandex with the fluffy crimp of DTY, achieving a breaking elongation of 500%~800%. It is not easily deformed by repeated stretching, has a low modulus of elasticity, a delicate hand feel, good dimensional stability, and maintains its crimp after heat setting. In existing technologies, DTY spandex filament is typically blended with nylon roving through core-spun yarn and Siro spinning. Specifically, a DTY spandex filament bobbin, guide roller, and tension controller are added to the roving frame of the spinning frame. After drafting, the DTY spandex filament is combined with the roving at the front roller nip and twisted into yarn.

[0003] However, existing devices have the following technical problems:

[0004] (1) Unstable coating, DTY spandex filaments are prone to deviation and core exposure, uneven elasticity, the roving needs to be separated when moving laterally, slow product switching, difficult to produce DTY high elasticity / high coating products, difficult tension control, and large tension fluctuation of spandex at high speed.

[0005] (2) Abnormal transverse movement or improper yarn guide stroke can easily lead to poor periodic covering, difficulty in matching drafting, difficulty in matching the drafting ratio of single / double rovings with DTY spandex, and improper fine adjustment can easily lead to uneven yarn, reduced strength, large friction of spiral winding of filaments, easy fatigue and breakage of spandex, and high breakage rate.

[0006] Therefore, there is an urgent need for a spinning device that can achieve stable embedding of multiple components, uniform coating, and controllable tension. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a device suitable for the multi-component embedded distribution arrangement of DTY spandex filament roving. This invention solves the technical problems of unstable wrapping, easy core filament displacement and exposure, difficulty in tension control, and single function in existing spinning devices when DTY spandex filament is blended with roving.

[0008] To solve the above problems, the present invention adopts the following technical solution:

[0009] A device suitable for multi-component embedded distribution arrangement of DTY spandex filament rovings includes a roving frame, a drafting assembly, a bell mouth assembly, a filament frame, a bundler, a twisting and winding assembly, and a tension adjustment assembly.

[0010] The roving frame is equipped with multiple roving bobbins, and the filament frame is equipped with multiple DTY spandex filament bobbins. The bell-shaped assembly includes a rear bell-shaped assembly for roving feeding, a guide bell-shaped assembly for filament straightening, and a plying bell-shaped assembly for roving and filament compounding. The drafting assembly includes multiple sets of drafting rollers arranged sequentially along the roving travel direction for progressively drafting the roving. The tension adjustment assembly includes a tension disc and double guide hooks for tension control of the DTY spandex filaments and guiding them forward without passing through the drafting assembly. The bundler is located at the plying bell-shaped assembly to guide the drafted roving and DTY spandex filaments to converge in a V-shape, forming a composite spiral structure in which multiple rovings and multiple DTY spandex filaments are alternately arranged in the cross-section. The twisting and winding assembly is used to twist the compounded yarn and wind it into a tube.

[0011] Furthermore, four roving bobbins are installed on the roving frame, and four DTY spandex filament bobbins are installed on the filament frame; the cross-sectional arrangement of the composite spiral structure is as follows: two rovings are embedded in the middle, two DTY spandex filaments are arranged at equal intervals on the outside of the two rovings, then two more rovings are arranged at equal intervals on the outside of the two DTY spandex filaments, and then two more DTY spandex filaments are arranged at equal intervals on the outermost side, forming a symmetrical alternating array of "roving-filament-roving-filament".

[0012] Furthermore, the multiple sets of drafting rollers in the drafting assembly sequentially include a rear gathering roller, a rear roller, a middle roller, a front middle roller, a front gathering roller, and a front roller; the rear gathering roller and the front gathering roller are used to gather the edge fibers of the sliver to reduce fuzz.

[0013] Furthermore, the tension adjustment assembly includes multiple tension discs and multiple double guide hooks arranged one-to-one with the DTY spandex filament bobbins. Each tension disc is used to eliminate tension fluctuations in the DTY spandex filament and control constant tension.

[0014] Each of the aforementioned double guide hooks is used to directly guide the DTY spandex filaments to the twisted flared end.

[0015] Furthermore, the twisting and winding assembly includes a yarn guide hook, a soft elastic steel wire traveler, and a bobbin; the soft elastic steel wire traveler is fitted onto the ring, and the bobbin is fitted onto the spindle; the yarn passes through the soft elastic steel wire traveler after being guided by the yarn guide hook, and the soft elastic steel wire traveler applies twisting to the yarn because it lags behind the spindle's rotation speed, and the twisted yarn is wound into a tube yarn by the bobbin.

[0016] Furthermore, the bundler has a V-shaped structure, with its opening facing the direction of the drawn roving and the DTY spandex filament, so that the two form a V-shaped confluence angle at the twisted trumpet opening.

[0017] The present invention also provides a spinning method for multi-component embedded distribution arrangement of DTY spandex filament roving based on the above-mentioned device, comprising the following steps:

[0018] Step 1: Roving operation - Place four roving bobbins on the roving frame and draw out the roving in sequence through the rear bell mouth and multiple sets of drafting rollers in the drafting assembly;

[0019] Step 2: Filament loading operation - Place four DTY spandex filament bobbins on the filament rack, and draw out the DTY spandex filaments in sequence through the tension plate, double guide hooks and guide bell mouth;

[0020] Step 3: Composite Aggregation Operation - The four rovings output from Step 1 and the four DTY spandex filaments output from Step 2 are embedded and composited at the plying trumpet and the bundler to form a spiral structure in which the rovings and filaments are arranged alternately in the cross section. Then, the rovings and filaments in the drafting assembly are used to complete the tight aggregation.

[0021] Step 4: Twisting and winding operation - The composite yarn output in Step 3 is guided by the yarn guide hook, twisted by the soft elastic steel wire loop and wound onto the bobbin to form a tube yarn;

[0022] Step 5: Full yarn doffing operation - When the yarn tube is wound to the set weight or time, the control system drives the doffing frame to lower the full yarn tube.

[0023] Compared with the prior art, the advantages of this invention are:

[0024] I. Significantly improved wrapping strength: Through the symmetrical alternation of multiple rovings and filaments, a "multi-core and multi-sheath" composite structure is formed. The core filaments are well centered and not easily shifted or exposed, thus improving the wrapping strength and solving the problems of fraying and pilling in high-speed weaving, as well as the problems of exposed cores and uneven wrapping.

[0025] II. Stable yarn structure and improved strength: The multi-strand slivers are interlocked, significantly improving breaking strength and abrasion resistance, making it suitable for high-strength, high-abrasion-resistant industrial yarns or high-end home textile fabrics.

[0026] 3. Strong functional customization capability: It can combine multiple fiber properties (such as antibacterial, conductive, moisture-wicking, etc.) to achieve multiple effects such as "elasticity + antibacterial + moisture wicking + antistatic". It can also be used to spin variegated yarn, gradient yarn, and multi-color composite yarn.

[0027] IV. Flexible process and high production efficiency: Multiple components of raw materials can be fed into a single spindle at the same time. Through multi-stage drafting and aggregation technology, composite yarn is formed in one step without the need for secondary doubling. It has less hairiness and high yarn evenness.

[0028] V. Wide adaptability and high added value: It can be spun into high-count, high-density, and high-performance composite yarns, which can be used for high-end knitted and woven fabrics, as well as medical elastic bandages and protective fabrics. The added value of the products is much higher than that of ordinary single-component yarns. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the device of the present invention;

[0030] Figure 2 This is a schematic diagram of the array arrangement of the four components embedded in the cross-sectional structure of DTY spandex filament roving according to the present invention.

[0031] Explanation of the labels in the diagram:

[0032] 1. Roving frame; 11. Roving bobbin;

[0033] 2. Drawing assembly; 21. Rear gathering roller; 22. Rear roller; 23. Middle roller; 24. Front middle roller; 25. Front gathering roller; 26. Front roller;

[0034] 3. Trumpet assembly; 31. Stranded trumpet; 32. Rear trumpet; 33. Guide wire trumpet;

[0035] 4. Filament frame; 41. Filament spool;

[0036] 5. Clusterer;

[0037] 6. Twisting and winding assembly; 61. Yarn guide hook; 62. Soft and elastic steel wire traveler; 63. Bollard;

[0038] 7. Tension adjustment assembly; 71. Tension disc; 72. Double guide wire hook. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] Example 1

[0041] See Figure 1 and Figure 2 This embodiment provides a device suitable for multi-component embedded distribution arrangement of DTY spandex filament roving, including a roving frame 1, a drafting assembly 2, a bell mouth assembly 3, a filament frame 4, a bundler 5, a twisting and winding assembly 6, and a tension adjustment assembly 7.

[0042] Roving frame 1 and roving path: Four roving bobbins 11 are installed on the roving frame 1. The roving slivers on the four roving bobbins 11 are fed in through the rear bell mouth 32, and then sequentially pass through the rear gathering roller 21, rear roller 22, middle roller 23, and front middle roller 24 to complete the staged drafting. The draft ratio is set according to the raw material and yarn count requirements; for example, the total draft ratio can be adjusted within the range of 10 to 50 times. The rear gathering roller 21 is used to initially gather the roving slivers and reduce edge fiber loss.

[0043] Filament Frame 4 and Filament Path: Four DTY spandex filament bobbins 41 are installed on the filament frame 4. After each DTY spandex filament is drawn out from the filament bobbin 41, it first passes through the tension disc 71 in the tension adjustment assembly 7 to eliminate tension fluctuations and control a constant tension, where the tension value is usually set to 5~15cN. Then, it is guided by the double guide hooks 72 and passes through the guide bell mouth 33 for straightening. The filament is directly conveyed forward to the plying area without passing through any drawing rollers.

[0044] Composite and Aggregated: The four drafted rovings and four DTY spandex filaments meet at the plying bell-shaped opening 31. A V-shaped condenser 5 (for spinning machines) is installed at the plying bell-shaped opening 31, with the opening of the condenser facing the direction from which the rovings and filaments arrive, causing them to converge at a V-shaped angle. After convergence, a multi-layered alternating spiral structure is formed, with the specific arrangement as follows... Figure 1 As shown: Two rovings are in the middle, with two filaments arranged at equal intervals on their outer sides, then two more rovings at equal intervals on the outermost sides, and finally two more filaments at equal intervals on the outermost sides, forming a symmetrical alternating array of "roving-filament-roving-filament". Subsequently, the composite sliver passes through the front gathering rollers 25 and 26 to achieve tight gathering, further gathering the edge fibers and reducing hairiness.

[0045] Twisting and winding: The tightly packed yarn is guided downwards by the guide hook 61, passing through the soft elastic steel wire traveler 62 fitted on the ring. The bobbin 63 is fitted on the spindle and rotates at high speed with the spindle. The soft elastic steel wire traveler 62 slows down due to friction with the ring, thus applying twist to the yarn. The twisted yarn is wound onto the bobbin 63 to form a bobbin. The ring is connected to the ring plate, which moves up and down during the spinning process, causing the yarn to be evenly cross-wound.

[0046] Based on the above apparatus, this embodiment also provides a spinning method for multi-component embedded distribution of DTY spandex filament roving, specifically including the following steps:

[0047] Step 1: Roving operation:

[0048] The operator places four roving bobbins 11 on the roving frame 1, draws out the roving sliver, and sequentially passes it through the rear bell-shaped end 32 → rear gathering roller 21 → rear roller 22 → middle roller 23 → front middle roller 24, leaving approximately 3 meters of length for subsequent operations. It should be noted that the operator needs to determine the positions of the drafting assembly 2, bell-shaped end assembly 3, and spooler 5 in advance based on the distance and position of each roller spacing, and set the drafting process for each zone according to the total drafting ratio and the drafting ratio of each zone, completing the installation of each drafting component.

[0049] Step 2, Filament Loading:

[0050] The operator places four DTY spandex filament bobbins 41 on the filament rack 4, draws out the filaments, and passes them sequentially through the tension plate 71, the double guide hook 72, and the guide bell mouth 33, leaving a length of about 3 meters so that the filament ends and the roving ends meet at the plying bell mouth 31.

[0051] Step 3, Composite Aggregation Operation:

[0052] The starting device initiates the process, where the roving is drafted to the target linear density via multiple sets of drafting rollers, while the filaments are directly conveyed under constant tension. The four drafted rovings and four filaments are then embedded and compounded at the plying bell mouth 31 and the bundler 5, forming a spiral structure with alternating cross-sections. Subsequently, the compounded yarn is tightly bound together by the front gathering rollers 25 and 26.

[0053] Step 4: Twisting and winding operation:

[0054] After being gathered, the yarn is guided by the yarn guide hook 61 and passes through the soft elastic steel wire traveler 62. Driven by the spindle, the soft elastic steel wire traveler rotates along the steel ring track, applying twist to the yarn and simultaneously winding the yarn onto the bobbin 63 to form a tube yarn.

[0055] Step 5: Full yarn unwinding operation:

[0056] When the yarn tube is wound to a set weight, such as 100g, or for a set time, the control system drives the doffing frame to fall, removing the full yarn tube from the spindle and completing the doffing process.

[0057] Example 2

[0058] This embodiment has the same basic structure and spinning steps as Embodiment 1, the difference being the types and combinations of the roving and filaments fed in. To achieve a multifunctional integrated composite yarn, this embodiment uses the following raw material combination:

[0059] Roving composition: 2 strands of cotton roving, 1 strand of antibacterial functional fiber roving, and 1 strand of moisture-wicking fiber roving.

[0060] Filament combination: DTY spandex filament, conductive filament.

[0061] The four rovings and two filaments (note: the total number of filaments here is four, which can be combined as needed, such as 2 DTY spandex filaments + 2 conductive filaments, or 1 DTY filament + 3 conductive filaments, etc.) are fed and compounded according to the cross-sectional arrangement rule of Example 1 (rovings and filaments are arranged alternately and symmetrically). The yarn spun in the end possesses the elasticity provided by DTY spandex filaments, the antibacterial properties provided by antibacterial fibers, the moisture-wicking properties provided by moisture-wicking fibers, and the antistatic properties provided by conductive filaments, achieving a multi-effect combination of "elasticity + antibacterial + moisture-wicking + antistatic".

[0062] In addition, by adjusting the feeding ratio, color, and type of roving / filament, multi-colored yarn, gradient yarn, and multi-color composite yarn can be spun to achieve a differentiated appearance of the fabric.

[0063] In summary, this invention, through the array arrangement based on the cross-sectional structure principle of multi-component embedded DTY spandex filament roving, the device arrangement of multi-component embedded distribution equipment for DTY spandex filament roving, and the systematic design of "multi-component symmetrical feeding + multi-drafting component drafting zone drafting aggregation optimization + composite twisting triangle zone," not only solves the pain points of uneven coating and single performance in ordinary core-spun yarn and Siro spinning equipment, but also retains the advantages of mature core-spun yarn and Siro spinning processes and easy modification. It achieves a triple improvement in yarn performance, product stability, and production efficiency, and is a typical implementation solution for upgrading spinning technology towards differentiation and functionality.

[0064] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A device suitable for multi-component embedded distribution arrangement of DTY spandex filament rovings, characterized in that, It includes a roving frame (1), a drafting assembly (2), a bell mouth assembly (3), a filament frame (4), a bundler (5), a twisting and winding assembly (6), and a tension adjustment assembly (7). The roving frame (1) is equipped with multiple roving bobbins (11), and the filament frame (4) is equipped with multiple DTY spandex filament bobbins (41). The flared assembly (3) includes a rear flared end (32) for roving feeding, a guide flared end (33) for filament straightening, and a plying flared end (31) for roving and filament compounding. The drafting assembly (2) includes multiple sets of drafting rollers arranged sequentially along the roving travel direction for progressively drafting the roving. The tension adjustment assembly (7) includes a tension disc (71) and a double guide hook (72) for tension control of DTY spandex filaments and guiding them to be conveyed directly forward without passing through the drawing assembly (2); The bundler (5) is located at the twisted trumpet mouth (31) and is used to guide the drafted roving and DTY spandex filaments to merge in a V-shape, forming a composite spiral structure in which multiple rovings and multiple DTY spandex filaments are arranged alternately in the cross section. The twisting and winding assembly (6) is used to twist the composite yarn and wind it into a tube.

2. The device for multi-component embedded distribution arrangement of DTY spandex filament roving according to claim 1, characterized in that, Four roving bobbins (11) are installed on the roving frame (1), and four DTY spandex filament bobbins (41) are installed on the filament frame (4). The cross-sectional arrangement of the composite spiral structure is as follows: two rovings are embedded in the middle, two DTY spandex filaments are arranged at equal intervals on the outside of the two rovings, then two more rovings are arranged at equal intervals on the outside of the two DTY spandex filaments, and then two more DTY spandex filaments are arranged at equal intervals on the outermost side, forming a symmetrical alternating array of "roving-filament-roving-filament".

3. The device for multi-component embedded distribution arrangement of DTY spandex filament roving according to claim 1, characterized in that, The multiple sets of stretching rollers in the stretching assembly (2) include, in sequence, a rear gathering roller (21), a rear roller (22), a middle roller (23), a front middle roller (24), a front gathering roller (25), and a front roller (26). The rear gathering roller (21) and the front gathering roller (25) are used to gather the edge fibers of the stubble to reduce fuzz.

4. The device for multi-component embedded distribution arrangement of DTY spandex filament roving according to claim 1, characterized in that, The tension adjustment assembly (7) includes multiple tension discs (71) and multiple double guide hooks (72) arranged one-to-one with the DTY spandex filament bobbin (41). Each tension disc (71) is used to eliminate tension fluctuations of the DTY spandex filament and control constant tension. Each of the said double guide hooks (72) is used to guide the DTY spandex filament directly to the twisted flared end (31).

5. The device for multi-component embedded distribution arrangement of DTY spandex filament roving according to claim 1, characterized in that, The twisting and winding assembly (6) includes a yarn guide hook (61), a soft elastic steel wire traveler (62), and a bobbin (63); the soft elastic steel wire traveler (62) is fitted on the steel ring, and the bobbin (63) is fitted on the spindle; the yarn is guided by the yarn guide hook (61) and passes through the soft elastic steel wire traveler (62). The soft elastic steel wire traveler (62) applies twisting to the yarn because it lags behind the speed of the spindle. The twisted yarn is wound into a tube yarn by the bobbin (63).

6. The device for multi-component embedded distribution arrangement of DTY spandex filament roving according to claim 1, characterized in that, The bundler (5) has a V-shaped structure, and the opening of the bundler (5) faces the direction of the drawn roving and the DTY spandex filament, so that the two form a V-shaped confluence angle at the twisted trumpet mouth (31).

7. A spinning method for multi-component embedded distribution of DTY spandex filament rovings based on the apparatus of any one of claims 1 to 6, characterized in that, Includes the following steps: Step 1: Roving operation - Place four roving bobbins (11) on the roving frame (1) and draw out the roving in sequence through the rear bell mouth (32) and multiple sets of drafting rollers in the drafting assembly (2); Step 2: Filament loading operation - Place four DTY spandex filament bobbins (41) on the filament rack (4), and draw out the DTY spandex filaments in sequence through the tension plate (71), double guide hook (72) and guide bell mouth (33). Step 3: Composite aggregation operation - The four rovings output from Step 1 and the four DTY spandex filaments output from Step 2 are embedded and composited at the plying trumpet mouth (31) and the bundler (5) to form a spiral structure in which the rovings and filaments are arranged alternately in the cross section. Then, the rovings are compacted by the front aggregation roller (25) and the front roller (26) in the drawing assembly (2). Step 4: Twisting and winding operation - The composite yarn output in step 3 is guided by the yarn guide hook (61), twisted by the soft elastic steel wire loop (62) and wound onto the bobbin (63) to form a tube yarn; Step 5: Full yarn doffing operation - When the yarn tube is wound to the set weight or time, the control system drives the doffing frame to lower the full yarn tube.

Images