Differential spandex multi-head high-speed spinning nozzle three-row multi-hole feeding device

Abstract

This invention discloses a three-row, multi-hole feeding device for a differentiated multi-head high-speed spinning channel of spandex, comprising a feeding frame; the feeding frame has a feeding ring, with grooves oppositely formed on the outer side wall of the feeding ring, and sliding components slidably connected within the grooves; a mesh is coaxially arranged inside the feeding ring, the diameter of the mesh being the same as the inner diameter of the feeding ring; a feeding row is arranged on the mesh, the feeding row having a strip-like structure, and multiple feeding holes are formed through the feeding row. Through the feeding frame, this invention not only separates the filaments generated by the spinneret into filament bundles via the feeding row, realizing a multi-filament bundle production process and improving spinning efficiency, but also allows the feeding ring to slide up and down via the sliding components, adjusting the position of the feeding row in the channel to adjust the initial spinneret spacing according to actual working conditions, avoiding mutual interference between filaments or filament bundles.

Description

Technical Field

[0001] This invention relates to the field of spinning tunnel technology, specifically to a three-row, multi-hole feeding device for a differentiated spandex multi-head high-speed spinning tunnel. Background Technology

[0002] The traditional spandex production process is as follows: a spinning solution containing DMAC solvent is precisely metered by a metering pump and spun out from the spinning head. In the spinning tunnel, the DMAC solvent evaporates, and the polymer cools at a certain rate to form spandex filaments, which are then wound onto a bobbin using a specialized winding device. In this process, the spandex spinning tunnel is mainly used for airflow distribution within the spandex spinning equipment, spandex filament arrangement, and the heating system. While continuous improvements to the functions of new spinning tunnels have significantly increased the solvent concentration limit within the tunnel, current spandex production still needs improvement. Furthermore, due to the high cost of upgrading spinning tunnels, how to increase spandex production while fully utilizing existing spinning tunnels has become a research hotspot for cost reduction and efficiency improvement in this field.

[0003] A prior art invention discloses a high-uniformity ultrafine polyester fiber production equipment and preparation method (WO2022134653A1). This invention includes a spinning box, a DIO spinning assembly, a ring-blowing cooling device, a bundling and oiling device, a spinning duct, a pre-networker, a drawing hot roller, a setting hot roller, a main networker, and a winding machine. A yarn stabilizer is set between the drawing hot roller and the setting hot roller. This invention employs a special spinneret micro-orifice arrangement, a ring-blowing cooling method, a bundling and oiling guiding device, and a yarn stabilizer device, aiming to solve problems such as uneven cooling and oiling, poor production stability, and difficulty in starting spun fibers in 5D~7D / 6F~8F ultrafine fibers. Existing spandex spinning equipment also suffers from problems such as poor spinning speed and quality, uneven airflow velocity field distribution inside the spinning duct, and fiber adhesion in the duct.

[0004] Therefore, it is necessary to provide a differentiated multi-head high-speed spinning tunnel with three rows of multi-hole feeding devices to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a differentiated multi-head high-speed spinning channel three-row multi-hole feeding device for spandex, so as to solve the problems of poor spinning speed and quality of spandex, uneven distribution of airflow velocity field inside the spinning channel, fiber adhesion in the channel, poor unwinding and weaving performance of fibers, and poor fiber forming uniformity and structural uniformity in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a three-row, multi-hole feeding device for a differentiated spandex multi-head high-speed spinning channel, comprising a feeding frame; the feeding frame has a feeding ring body, and a sliding groove is opened opposite to each other on the outer side wall of the feeding ring body, a sliding component is slidably connected in the sliding groove, a mesh is coaxially arranged inside the feeding ring body, the diameter of the mesh is the same as the inner diameter of the feeding ring body, a feeding row is arranged on the mesh, the feeding row has a strip-like structure, and multiple feeding holes are opened through the feeding row.

[0007] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the feeding frame, can not only separate the filaments generated by the spinneret into filament bundles through the feeding row to realize the multi-filament bundle production process and improve spinning efficiency, but also the feeding ring can slide up and down through the sliding part to adjust the position of the feeding row in the tunnel, so as to adjust the initial spinneret spacing according to the actual working conditions and avoid mutual interference between filaments or filament bundles.

[0008] According to one embodiment of the present invention, a guide frame is rotatably connected to the lower part of the feeding ring body via a bearing. The guide frame body has an upper guide ring and a lower guide ring. Both the upper guide ring and the lower guide ring have an annular structure. The diameter of the upper guide ring is larger than the diameter of the lower guide ring. A plurality of guide arc plates are fixedly fixed circumferentially between the upper guide ring and the lower guide ring. The guide arc plates have a curved plate structure.

[0009] This differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device uses a guide arc plate circumferentially set on the guide frame to rotate itself by the airflow in the channel, thereby driving the airflow to form a vortex. This improves the uniformity of the airflow velocity field distribution inside the guide frame, thereby improving the spinning speed and quality of spandex. In addition, the vortex helps to reduce the swaying of the filament bundle located at the center of the vortex and improves the filament bundle forming effect.

[0010] According to one embodiment of the present invention, a heat-insulating sleeve is coaxially provided on the outside of the guide frame, and the end of the heat-insulating sleeve is detachably connected to the upper guide ring.

[0011] In existing dry spinning processes for spandex, polyurethane urea is commonly used as the spinning solution. This high-viscosity polyurethane urea solution, after being ejected from the spinneret, passes through a spinning tunnel with a heating jacket. During this process, uneven heating of the filaments occurs. This differentiated multi-head high-speed spandex spinning tunnel with a three-row, multi-hole feeding device, through an insulating sleeve installed below the feeding frame, ensures uniform heating of the filaments passing through the feeding row. This prevents airflow interference between adjacent filaments on the feeding row, avoiding a significant temperature difference between the airflow around the filaments below the feeding row and other areas of the tunnel, thus improving the spinnability of the polyurethane urea solution. Furthermore, the insulating sleeve structure on the outside of the guide frame reduces or blocks the airflow entering the insulating tank from the outside, further preventing interference between airflow around adjacent filaments.

[0012] According to an embodiment of the present invention, the differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device further includes a tunnel, the tunnel having a cylindrical structure, a spinneret provided at one end near the tunnel, and a plurality of air inlets, air outlets and air curtain holes arranged around the side wall of the tunnel, the air inlets being located near the spinneret, the air outlets being located away from the spinneret, and the air curtain holes being located below the air outlets.

[0013] This differentiated spandex multi-head high-speed spinning channel with three rows of multi-hole feeding devices, through adaptive design of square and circular cross-section channels, can not only improve the fiber forming effect and reduce the differences in fiber physical properties caused by changes in spinning speed, but also facilitate the recovery of polyurethane urea raw solvent.

[0014] According to one embodiment of the present invention, an air intake assembly is coaxially provided on the outer side wall of the passage. The air intake assembly has an air intake housing, and an air intake ring is coaxially provided inside the air intake housing. The air intake ring has a plurality of air intake guide holes equidistantly opened in the circumferential direction, and the air intake guide holes are correspondingly matched with the air intake holes.

[0015] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air inlet component, not only avoids fiber adhesion in the tunnel, which affects the unwinding and weaving performance of the fiber, but also improves the uniformity of the fiber and avoids harm to the user's health. Specifically, the air inlet component increases the heat in the tunnel, that is, increases the temperature and air volume. As the spinning temperature and air volume in the tunnel increase, the solvent evaporation and diffusion rate in the polyurethane urea solution accelerates, which is conducive to reducing the residual solvent in the fiber, thereby improving the spinning quality and efficiency.

[0016] According to one embodiment of the present invention, the feeding rack is coaxially disposed inside the passageway, and the sliding member is fixedly connected to the inner wall of the passageway.

[0017] According to one embodiment of the present invention, an air outlet assembly is coaxially provided on the outer side wall of the passageway. The air outlet assembly has an air outlet housing, and an air outlet ring is coaxially provided inside the air outlet housing. The air outlet ring has a plurality of air outlet guide holes equidistantly opened in the circumferential direction, and the air outlet guide holes are correspondingly matched with the air outlet holes.

[0018] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air outlet component and the air inlet component, maintains the uniformity of the airflow temperature field distribution in the tunnel, so that a reasonable temperature distribution is formed inside the tunnel, which not only improves the spinning speed, but also makes the spinning quality more stable.

[0019] According to one embodiment of the present invention, an air curtain duct is coaxially provided on the outer side wall of the passage, and the positions of the air curtain duct and the air curtain vent correspond to each other.

[0020] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air curtain pipe, introduces nitrogen into the tunnel to isolate the gas inside the tunnel from passing through the air curtain pipe. This not only allows most of the gas in the tunnel to be discharged from the air outlet component, but also prevents the residual solvent in the formed fiber from being evaporated and discharged, thus avoiding harm to the health of the workers.

[0021] According to one embodiment of the present invention, a mounting boss is provided on the inner side wall of the passage, and a flow-slowing component is rotatably connected to the mounting boss. Multiple flow-slowing components are equidistantly arranged on the mounting boss in a circumferential direction. The flow-slowing components have a rod-shaped structure, and the position of the flow-slowing components corresponds to the position of the air inlet.

[0022] This differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device, through the setting of a slow-flow component, allows the airflow passing through the air inlet to flow along the surface of the slow-flow component, reducing the airflow speed, weakening the interference of the airflow on the fiber filament, and improving the spinning forming quality.

[0023] According to an embodiment of the present invention, the differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device further includes an air supply component, the air supply component having an air supply base having a hollow square cylindrical structure, an air inlet pipe and an air outlet pipe provided on one outer side wall of the air supply base, an air inlet chamber provided near the inner bottom of the air supply base, a temperature control chamber provided above the air inlet chamber, a partition provided near the top of the air supply base, a vent hole provided on the partition, and an air outlet provided on the side wall of the air supply base, the air outlet being located above the partition.

[0024] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air supply component, forms an airflow circulation loop with the tunnel interior via pipelines, thereby ensuring uniform and stable temperature distribution within the tunnel and improving fiber forming uniformity and structural uniformity. Compared to existing technologies, which often use single-pass heating pipes along the spinning path on the outer wall of the spinning tunnel, resulting in defects such as the heating pipes heating the air inside the tunnel or the internal air heating the external heating pipes in the opposite direction, thus affecting the airflow temperature field distribution within the tunnel; this device overcomes these defects by designing a tunnel heating method.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device uses a guide arc plate circumferentially set on the guide frame to rotate itself by the airflow in the channel, thereby driving the airflow to form a vortex, improving the uniformity of the airflow velocity field distribution inside the guide frame, thereby improving the spinning speed and quality of spandex, and the formed vortex helps to reduce the swaying of the filament bundle located at the center of the vortex, improving the filament bundle forming effect.

[0027] 2. This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the heat insulation sleeve set below the feeding frame, can ensure that the filaments passing through the feeding row are heated at a uniform temperature, avoid mutual interference of the airflow around adjacent filaments on the feeding row, and prevent the airflow around the filaments below the feeding row from having a larger temperature difference compared with other areas of the tunnel, thereby improving the spinnability of the polyurethane urea solution.

[0028] 3. This differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device, through the setting of the air inlet component, not only avoids the fiber from sticking together in the channel, affecting the fiber unwinding and weaving performance, but also improves the uniformity of the fiber and avoids harm to the user's health.

[0029] 4. The differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air supply component, forms an airflow circulation loop with the tunnel interior through the pipeline, so as to make the temperature distribution in the tunnel uniform and stable, thereby improving the uniformity of fiber forming and structure. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a preferred embodiment of the differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device provided by the present invention;

[0031] Figure 2 for Figure 1 The main view;

[0032] Figure 3 for Figure 2 The sectional view shown is along line AA.

[0033] Figure 4 for Figure 2 The BB-directed sectional view is shown below;

[0034] Figure 5 for Figure 4 Enlarged view of section I-I;

[0035] Figure 6 for Figure 4 Enlarged view of section II-II;

[0036] Figure 7 for Figure 4 The diagram shows the structure of the feeding rack.

[0037] Figure 8 for Figure 7 Exploded view;

[0038] Figure 9 for Figure 7 Enlarged view of section III-III;

[0039] Figure 10 for Figure 3 The diagram shows the structure of the air supply auxiliary component.

[0040] In the diagram: 1. Feeding rack; 11. Feeding ring; 111. Slide groove; 12. Sliding component; 13. Mesh; 14. Feeding row; 141. Feeding hole; 15. Bearing; 16. Guide frame; 161. Upper guide ring; 162. Lower guide ring; 163. Guide arc plate; 17. Insulation sleeve; 2. Channel; 21. Spinneret; 22. Air inlet; 23. Air outlet; 24. Air inlet assembly; 241. Air inlet housing; 242. Air inlet ring; 243. Air inlet guide hole; 25. Air outlet assembly; 251. Air outlet housing; 252. Air outlet ring; 253. Air outlet guide hole; 26. Air curtain duct; 27. Mounting boss; 28. Flow control component; 29. ​​Air curtain vent; 3. Air supply assembly; 31. Air supply base; 311. Air inlet duct; 312. Air outlet duct; 32. Air inlet chamber; 33. Temperature control chamber; 34. Partition plate; 35. Vent hole; 4. Air supply auxiliary component; 41. Auxiliary disc; 42. Auxiliary bending plate; 421. Keyway hole; 422. Fastener; 43. Connecting plate; 44. Flow baffle; 441. Flow hole; 5. Air outlet. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-4 , Figures 7-9 An embodiment of the present invention provides a three-row multi-hole feeding device for a differentiated spandex multi-head high-speed spinning channel, comprising a feeding frame 1; the feeding frame 1 has a feeding ring 11, and a sliding groove 111 is opened opposite to each other on the outer side wall of the feeding ring 11. A sliding member 12 is slidably connected in the sliding groove 111. A mesh 13 is coaxially arranged inside the feeding ring 11. The diameter of the mesh 13 is the same as the inner diameter of the feeding ring 11. A feeding row 14 is provided on the mesh 13. The feeding row 14 has a strip-like structure and multiple feeding holes 141 are opened through the feeding row 14.

[0043] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the feeding frame 1, can not only separate the filaments generated by the spinneret 21 into filament bundles through the feeding row 14 to realize the multi-filament bundle production process and improve spinning efficiency, but also the feeding ring 11 can slide up and down through the sliding part 12 to adjust the position of the feeding row 14 in the tunnel 2, so as to adjust the initial spinneret spacing according to the actual working conditions and avoid mutual interference between filaments or filament bundles.

[0044] Please see Figures 7-9 Below the feeding ring 11, a guide frame 16 is rotatably connected via a bearing 15. The guide frame 16 has an upper guide ring 161 and a lower guide ring 162. Both the upper guide ring 161 and the lower guide ring 162 have an annular structure. The diameter of the upper guide ring 161 is larger than the diameter of the lower guide ring 162. Several guide arc plates 163 are fixed circumferentially at equal intervals between the upper guide ring 161 and the lower guide ring 162. The guide arc plates 163 have a curved plate structure.

[0045] This differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device uses the guide arc plate 163 circumferentially set in the guide frame 16 to generate rotation by the airflow in the channel 2, thereby driving the airflow to form a vortex, improving the uniformity of the airflow velocity field distribution inside the guide frame 16, thereby improving the spinning speed and quality of spandex, and the formed vortex helps to reduce the swaying of the filament bundle located at the center of the vortex, improving the filament bundle forming effect.

[0046] Please see Figures 7-9 The guide frame 16 is coaxially provided with an insulation sleeve 17, and the end of the insulation sleeve 17 is detachably connected to the upper guide ring 161.

[0047] This differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device, through the heat insulation sleeve 17 set below the feeding frame 1, can ensure that the yarn bundles passing through the feeding row 14 are heated at a uniform temperature, avoiding mutual interference of airflow around adjacent yarn bundles on the feeding row 14, which would result in a larger temperature difference between the airflow around the yarn bundles below the feeding row 14 and other areas of the channel 2, thus improving the spinnability of the polyurethane urea solution. On the other hand, through the heat insulation sleeve 17 structure on the outside of the guide frame 16, the airflow entering the heat insulation tank from the outside is reduced or blocked, further avoiding interference of airflow around adjacent yarn bundles.

[0048] Please see Figures 1-4 The differentiated spandex multi-head high-speed spinning channel 2 three-row multi-hole feeding device also includes a channel 2, which has a cylindrical structure. A spinneret 21 is provided at one end of the channel 2. Multiple air inlets 22, air outlets 23, and air curtain holes 29 are arranged around the side wall of the channel 2. The air inlets 22 are located close to the spinneret 21, the air outlets 23 are located away from the spinneret 21, and the air curtain holes 29 are located below the air outlets 23.

[0049] This differentiated spandex multi-head high-speed spinning channel with three rows of multi-hole feeding devices, through the adaptive design of the square and circular cross-section channels 2, can not only improve the fiber forming effect and reduce the differences in fiber physical properties caused by changes in spinning speed, but also facilitate the recovery of polyurethane urea raw solvent.

[0050] Please see Figures 1-4 , Figure 5 An air intake assembly 24 is coaxially provided on the outer wall of the passageway 2. The air intake assembly 24 has an air intake housing 241. An air intake ring 242 is coaxially provided inside the air intake housing 241. Multiple air intake guide holes 243 are equidistantly opened in the circumferential direction on the air intake ring 242. The air intake guide holes 243 are correspondingly matched with the air intake holes 22.

[0051] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air inlet component 24, not only avoids fiber adhesion in the tunnel 2, which affects the unwinding and weaving performance of the fiber, but also improves the uniformity of the fiber and avoids harm to the user's health. Specifically, the air inlet component 24 increases the heat in the tunnel 2, that is, increases the temperature and air volume. As the spinning temperature and air volume in the tunnel 2 increase, the solvent evaporation and diffusion rate in the polyurethane urea solution accelerates, which is conducive to reducing the residual solvent in the fiber, thereby improving the spinning quality and efficiency.

[0052] Please see Figure 4 The feeding rack 1 is coaxially disposed inside the passageway 2, and the sliding member 12 is fixedly connected to the inner wall of the passageway 2.

[0053] Please see Figures 1-4 , Figure 6 An air outlet assembly 25 is coaxially provided on the outer wall of the passageway 2. The air outlet assembly 25 has an air outlet housing 251. An air outlet ring 252 is coaxially provided inside the air outlet housing 251. Multiple air outlet guide holes 253 are equidistantly opened in the circumferential direction on the air outlet ring 252. The air outlet guide holes 253 are correspondingly matched with the air outlet holes 23.

[0054] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air outlet component 25 and the cooperation of the air inlet component 24, maintains the uniformity of the airflow temperature field distribution in the tunnel 2, so that a reasonable temperature distribution is formed inside the tunnel 2, which not only improves the spinning speed, but also makes the spinning quality more stable.

[0055] Please see Figures 1-4 An air curtain duct 26 is coaxially provided on the outer wall of the passageway 2, and the positions of the air curtain duct 26 and the air curtain vent 29 are corresponding.

[0056] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air curtain pipe 26, introduces nitrogen into the tunnel 2 to isolate the gas inside the tunnel 2 from passing through the air curtain pipe 26. This not only allows most of the gas in the tunnel 2 to be discharged from the air outlet component 25, but also prevents the residual solvent in the formed fiber from being evaporated and discharged, thus avoiding harm to the health of the workers.

[0057] Please see Figures 1-4The inner wall of the passage 2 is provided with a mounting boss 27, and a flow-slowing component 28 is rotatably connected to the mounting boss 27. Multiple flow-slowing components 28 are equidistantly arranged around the mounting boss 27. The flow-slowing component 28 has a round rod-shaped structure, and the position of the flow-slowing component 28 corresponds to the position of the air inlet 22.

[0058] This differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device, through the setting of the slow flow component 28, makes the airflow through the air inlet 22 flow along the surface of the slow flow component 28, reducing the air inlet speed, weakening the interference of airflow on the fiber filament, and improving the spinning forming quality.

[0059] Please see Figures 1-3 The differentiated spandex multi-head high-speed spinning channel 2 three-row multi-hole feeding device also includes an air supply component 3. The air supply component 3 has an air supply base 31 with a hollow square cylindrical structure. An air inlet pipe 311 and an air outlet pipe 312 are provided on one outer side wall of the air supply base 31. An air inlet chamber 32 is provided near the inner bottom of the air supply base 31. A temperature control chamber 33 is provided above the air inlet chamber 32. A partition 34 is provided near the top of the air supply base 31. A vent hole 35 is opened on the partition 34. An air outlet 5 is opened on the side wall of the air supply base 31 and is located above the partition 34.

[0060] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air supply component 3, forms an airflow circulation loop with the inside of the tunnel 2 through the pipeline, so as to make the temperature distribution in the tunnel 2 uniform and stable, thereby improving the uniformity of fiber forming and structure. Compared with the prior art, the outer wall of the spinning tunnel 2 mostly uses single-pass heating pipe along the spinning path, which has the defects of heating the air inside the tunnel 2 or the internal air heating the external heating pipe in the opposite direction, thus affecting the airflow temperature field distribution in the tunnel 2; while this device overcomes the above defects by designing the heating method of the tunnel 2.

[0061] Example 2:

[0062] Based on Example 1, please refer to Figures 1-4 , Figure 9 The partition 34 is provided with an air supply auxiliary component 4, which has an auxiliary disc 41. The auxiliary disc 41 is arranged parallel above the partition 34 and has a gap between it and the vent 35. Multiple auxiliary bent plates 42 are equidistantly arranged on the auxiliary disc 41. A keyway hole 421 is opened on the auxiliary bent plate 42. Fasteners 422 are provided in the keyway hole 421 and are fixedly connected to the auxiliary disc 41. A connecting plate 43 is provided on the auxiliary disc 41. A flow baffle 44 is provided at the end of the connecting plate 43. The flow baffle 44 and the auxiliary disc 41 are coaxially arranged. Several flow holes 441 are opened on the flow baffle 44. A through hole is provided in the middle of the auxiliary disc 41. The end of the bent part of the auxiliary bent plate 42 is connected to the upper surface of the partition 34.

[0063] This differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device, through the setting of the air supply auxiliary component 4, not only enables its flow baffle 44 to block the airflow discharged upward from the vent 35, but also guides the airflow to be discharged from the through hole in the middle of the auxiliary disc 41 through the auxiliary bending plate 42, so that the airflow passes through the air outlet 5 at a lower flow rate, thereby slowing down the flow rate of the input airflow received in the tunnel, which helps to improve the spinning speed and forming quality.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A differentiated spandex multi-head high-speed spinning channel with a three-row multi-hole feeding device, including: Feeding rack (1); The feeding rack (1) has a feeding ring (11), and a sliding groove (111) is opened on the outer side wall of the feeding ring (11). A sliding member (12) is slidably connected in the sliding groove (111). A mesh (13) is coaxially arranged inside the feeding ring (11). A feeding row (14) is provided on the mesh (13), and a feeding hole (141) is opened through the feeding row (14). The feeding ring (11) is rotatably connected to a guide frame (16) via a bearing (15). The guide frame (16) has an upper guide ring (161) and a lower guide ring (162). Both the upper guide ring (161) and the lower guide ring (162) have an annular structure. The diameter of the upper guide ring (161) is larger than the diameter of the lower guide ring (162). Several guide arc plates (163) are fixed circumferentially at equal intervals between the upper guide ring (161) and the lower guide ring (162). The guide arc plates (163) have a curved plate structure.

2. The differential spandex multi-orifice high speed spinning nozzle with three rows of multi-orifice feeding device according to claim 1, characterized in that: The guide frame (16) is coaxially provided with a heat insulation sleeve (17), and the end of the heat insulation sleeve (17) and the upper guide ring (161) are detachably connected.

3. The differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device according to any one of claims 1-2, characterized in that: The differentiated spandex multi-head high-speed spinning tunnel three-row multi-hole feeding device also includes a tunnel (2), the tunnel (2) has a cylindrical structure, and a spinneret (21) is provided at one end of the tunnel (2). Multiple air inlets (22), air outlets (23), and air curtain holes (29) are arranged around the side wall of the tunnel (2). The air inlets (22) are located close to the spinneret (21), the air outlets (23) are located away from the spinneret (21), and the air curtain holes (29) are located below the air outlets (23).

4. The differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device according to claim 3, characterized in that: An air intake assembly (24) is coaxially provided on the outer wall of the passage (2). The air intake assembly (24) has an air intake housing (241). An air intake ring (242) is coaxially provided inside the air intake housing (241). Multiple air intake guide holes (243) are equidistantly opened on the air intake ring (242) in the circumferential direction. The air intake guide holes (243) are correspondingly matched with the air intake holes (22).

5. The differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device according to claim 4, characterized in that: The feeding rack (1) is coaxially disposed inside the passageway (2), and the sliding member (12) is fixedly connected to the inner wall of the passageway (2).

6. The differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device according to claim 5, characterized in that: An air outlet assembly (25) is coaxially provided on the outer wall of the passage (2). The air outlet assembly (25) has an air outlet housing (251). An air outlet ring (252) is coaxially provided inside the air outlet housing (251). Multiple air outlet guide holes (253) are equidistantly opened on the air outlet ring (252) in the circumferential direction. The air outlet guide holes (253) are correspondingly matched with the air outlet (23).

7. The differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device according to claim 6, characterized in that: An air curtain pipe (26) is coaxially provided on the outer wall of the passage (2), and the positions of the air curtain pipe (26) and the air curtain hole (29) are corresponding.

8. The differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device according to claim 7, characterized in that: The inner wall of the passage (2) is provided with a mounting boss (27), and a flow-slowing component (28) is rotatably connected to the mounting boss (27). Multiple flow-slowing components (28) are provided circumferentially at equal intervals on the mounting boss (27). The flow-slowing component (28) has a round rod-shaped structure, and the position of the flow-slowing component (28) corresponds to the position of the air inlet (22).

9. The differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device according to claim 8, characterized in that: The differentiated spandex multi-head high-speed spinning channel three-row multi-hole feeding device also includes an air supply component (3), the air supply component (3) has an air supply base (31), the air supply base (31) has a hollow square cylindrical structure, an air inlet pipe (311) and an air outlet pipe (312) are provided on one outer side wall of the air supply base (31), an air inlet chamber (32) is provided near the inner bottom of the air supply base (31), a temperature control chamber (33) is provided above the air inlet chamber (32), a partition (34) is provided near the top of the air supply base (31), a vent hole (35) is provided on the partition (34), and an air outlet (5) is provided on the side wall of the air supply base (31), the air outlet (5) is located above the partition (34).

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