Adjustable spinneret for producing spandex stretch yarn and production process thereof

Abstract

The present invention relates to the technical field of spandex stretch yarn production, specifically to an adjustable spinneret for spandex stretch yarn production and its production process, comprising a spinneret with a cavity internally structured, a feed plate fixedly connected to the spinneret cavity, a plurality of nozzles for spandex yarns to pass through at the bottom of the feed plate, a plurality of partitions fixedly connected to the spinneret cavity, a plurality of partitions partitioning the spinneret cavity into a plurality of airflow paths, a feed assembly for conveying spandex raw materials at the top of the spinneret, a transmission cavity internally defined, a plurality of adjustment assemblies for controlling the diameter of the nozzles provided in the transmission cavity, a windshield for blocking airflow rotatably connected to the spinneret cavity and penetrating the plurality of partitions. The windshield and the adjustment assembly cooperate with each other to generate appropriate wind force, which can control the fluttering and entanglement of the spandex yarns during the spinning process, thereby making the production process smoother.

Description

Technical Field

[0001] The invention relates to the technical field of spandex stretch yarn production, in particular to an adjustable spinneret device for spandex stretch yarn production and a production process thereof. Background Art

[0002] In the modern textile industry, spandex fiber is widely used due to its excellent elasticity and wear resistance. The spinneret is a key piece of equipment in the production of spandex stretch yarn, and its performance is directly related to fiber quality and production efficiency. Traditional spinnerets typically have a fixed spinneret aperture, requiring frequent spinneret replacement when producing spandex yarns of varying thicknesses. This not only increases production costs but also reduces efficiency.

[0003] For example, patent application CN212865084U discloses a spinning device for spandex yarn production, comprising a housing, a spinning device, and a cooling device. A material box is fixedly connected to the top of the housing, with a feed port defined in the top. A fixing plate is fixedly connected to the top outer wall of the housing, with two support columns fixedly connected to the fixing plate. A rotating shaft is fixedly connected between the two support columns, and a distribution plate is sleeved on the outer wall of the rotating shaft. A controller is fixedly connected to one outer wall of the housing. The spinning device includes a nozzle, and a first adjustment device is movably connected to the inner wall of the material box and the outer wall of the nozzle. The controller controls the rotation of a rotating wheel, which retracts an elastic cord to align the second adjustment device with the first adjustment device, allowing the spandex yarn to be shaped and ejected through the second adjustment device. By setting the first and second adjustment devices, the size of the nozzle is limited, allowing the diameter of the yarn to be adjusted, avoiding the trouble of replacing the spinneret.

[0004] The above-mentioned prior art can limit the size of the nozzle by setting an adjustment device, thereby adjusting the diameter of the spinneret and avoiding the trouble of replacing the spinneret. However, in the actual production process, some problems still exist. Whenever the nozzle diameter decreases, the diameter of the sprayed spandex yarn naturally decreases. However, the wind force generated by the wind knife remains constant and does not adjust accordingly. This mismatch between wind force and fiber diameter reduces the diameter of the sprayed spandex yarn, and its mass and cross-sectional area are also reduced. As a result, when the yarn is subjected to the same wind force, the impact force it experiences is relatively increased. This may cause the spandex yarn to swing, drift, or even break under the influence of the wind knife, seriously affecting the stability of the production process and the fiber quality. To this end, we propose an adjustable spinneret device for spandex stretch yarn production and a production process thereof. Summary of the Invention

[0005] The object of the present invention is to provide an adjustable spinning device for producing spandex stretch yarn and a production process thereof, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable spinning device for producing spandex stretch yarn, comprising a spinneret with a cavity inside, a feed plate fixedly connected to the cavity of the spinneret, a plurality of nozzles for spandex yarns to pass through are provided at the bottom of the feed plate, a plurality of partitions are fixedly connected to the cavity of the spinneret, a plurality of partitions are divided into a plurality of airflow paths in the cavity of the spinneret, a feed assembly for conveying spandex raw materials is constructed at the top of the spinneret, a transmission cavity is provided inside the feed plate, a plurality of adjustment assemblies for controlling the diameter of the nozzle are arranged in the transmission cavity, a windshield for blocking the passage of air is rotatably connected in the cavity of the spinneret and passing through the plurality of partitions.

[0007] Preferably, the adjustment component includes a support frame fixedly connected to the transmission cavity of the material plate and located at the center of multiple nozzles, multiple support frames are provided with through holes with the same diameter as the multiple nozzles, multiple support frames are evenly provided with blocking blocks on the top, multiple support frames are provided with guide rails for sliding of multiple blocking blocks on the top, and multiple support frames are provided with driving mechanisms on the top for driving multiple blocking blocks to move synchronously.

[0008] Preferably, the driving mechanism includes a movable cover plate rotatably connected to the top of multiple support frames, the tops of multiple blocking blocks are fixedly connected with positioning rods, and the interiors of multiple movable cover plates are fixedly connected with multiple guide grooves for sliding positioning rods.

[0009] Preferably, a driving motor is fixedly connected to the transmission cavity of the feed plate, an output end of the driving motor is fixedly connected to a driving gear, and an outer surface of the movable cover plate is evenly fixedly connected to a driven gear meshing with the driving gear.

[0010] Preferably, the wind shield is located inside a plurality of partitions and is fixedly connected to a rotating gear, and the interiors of the plurality of partitions are slidably connected to a rack that meshes with the rotating gear, one side of the rack is fixedly connected to a straight groove plate, and the top of the driving gear is symmetrically fixedly connected to a limiting rod placed inside the straight groove plate.

[0011] Preferably, the feed assembly includes a distribution plate fixedly connected to the top of the spinneret, the bottom of the distribution plate is connected to the feed plate, the top of the distribution plate is connected to a feed pipe, and one end of the feed pipe is fixedly connected to an extruder.

[0012] Preferably, a screen changer is fixedly connected to the interior of the feed pipe, and a metering pump is fixedly connected to the outer surface of the feed pipe and one end close to the distribution plate.

[0013] A production process of an adjustable spinneret for producing spandex stretch yarn comprises the following steps:

[0014] S1, transporting the spandex raw material to the interior of the material plate;

[0015] S2. The spandex raw material is pushed under pressure in the feed plate and finally ejected from multiple nozzles to form yarn;

[0016] S3. Then, airflow is generated in the air duct to cool the spandex yarns sprayed from the multiple nozzles.

[0017] Preferably, in step S2, the temperature inside the material plate is 210-230°C.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention generates appropriate wind force through the interaction between the windshield and the adjustment assembly. This appropriate wind force can control the fluttering and entanglement of the spandex yarn during the spinning process, making the production process smoother. At the same time, the matching of wind force and fiber diameter ensures that the fiber is subjected to uniform force during the cooling and solidification process, thereby avoiding uneven fiber surface or uneven internal structure. This helps to ensure the stability and consistency of fiber quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention;

[0021] Figure 2 is a schematic diagram of a second three-dimensional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0023] Figure 4 It is a schematic diagram of a top cross-sectional structure of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the adjustment component of the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the structure at center A;

[0026] Figure 7 It is a schematic diagram of the partial structure of the regulating component in the present invention;

[0027] Figure 8 This is a schematic diagram of the exploded structure of the support frame and the movable cover plate in the present invention;

[0028] Figure 9 Schematic diagram of the structure of the rack and the rotating gear in the present invention;

[0029] Figure 10 It is a structural schematic diagram of the air nozzle of the present invention.

[0030] In the figure: 100, spinneret; 101, distribution plate; 102, feed pipe; 103, extruder; 104, screen changer; 105, metering pump; 106, partition; 107, feed plate; 108, nozzle; 200, air duct; 201, through pipe; 202, air nozzle; 203, air duct; 300, support frame; 301, guide rail; 302, movable cover; 303, guide groove; 304, blocking block; 305, positioning rod; 306, driving motor; 307, driving gear; 308, driven gear; 400, wind shield; 401, limit rod; 402, rack; 403, straight groove plate; 404, rotating gear. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1 - Figure 3 The present invention provides a technical solution: an adjustable spinning device for producing spandex stretch yarn, comprising a spinneret 100 with a cavity inside, a feed plate 107 fixedly connected to the cavity of the spinneret 100, a plurality of nozzles 108 for spandex yarn to pass through are provided at the bottom of the feed plate 107, a plurality of partitions 106 fixedly connected to the cavity of the spinneret 100, a plurality of partitions 106 in the cavity of the spinneret 100 are divided into a plurality of air ducts 203 for air flow to pass through, and a top structure of the spinneret 100. There is a feeding assembly for conveying spandex raw materials, a transmission cavity is opened inside the feed plate 107, and a plurality of adjustment assemblies for controlling the diameter of the nozzle 108 are arranged in the transmission cavity. A windshield 400 for blocking the passage of air is rotatably connected in the cavity of the spinneret 100 and through a plurality of partitions 106. By setting up the feeding assembly, the spandex raw materials can be conveyed to the interior of the feed plate 107 so that the raw materials can be converted into spandex yarns, and the adjustment assembly can adjust the diameter of the nozzle 108 so that it can adapt to the spandex yarn diameters required by different requirements.

[0033] For details, please refer to Figure 5 、 Figure 6 and Figure 8In order to facilitate the simultaneous and synchronous adjustment of the diameters of multiple nozzles 108, an adjustment component is provided, including a support frame 300 fixedly connected to the transmission cavity of the material plate 107 and located at the center of the multiple nozzles 108. The interiors of the multiple support frames 300 are provided with through holes consistent with the diameters of the multiple nozzles 108. The tops of the multiple support frames 300 are evenly provided with blocking blocks 304. The tops of the multiple support frames 300 are provided with guide rails 301 for the sliding of the multiple blocking blocks 304. The tops of the multiple support frames 300 are provided with driving mechanisms for driving the multiple blocking blocks 304 to move synchronously, wherein the driving mechanism realizes mutual transmission between the multiple adjustment components, thereby rotating synchronously.

[0034] The driving mechanism includes a movable cover plate 302 rotatably connected to the top of multiple support frames 300, multiple blocking blocks 304 are fixedly connected to the tops of the positioning rods 305, multiple movable cover plates 302 are fixedly connected to the insides of the multiple positioning rods 305 to slide, a driving motor 306 is fixedly connected to the transmission cavity of the feed plate 107, the output end of the driving motor 306 is fixedly connected to the driving gear 307, and the outer surface of the movable cover plate 302 is evenly fixedly connected to the driven gear 308 meshing with the driving gear 307. By turning on the driving motor 306 in the positive direction, the driving gear 307 is driven to rotate, so that the driving gear 307 is meshed with the driven gears 308 on both sides of it, thereby driving the two movable cover plates 302 to rotate in the same direction at the same time. At this time, the rotation of the movable cover plate 302 will drive multiple The guide groove 303 produces displacement and drives the positioning rod 305 to slide inside it, thereby driving multiple blocking blocks 304 to slide on the guide rail 301. At this time, one end of the multiple blocking blocks 304 will approach each other and thus reduce the through hole of the support frame 300, wherein the ends of the multiple blocking blocks 304 that are close to each other can contact, and when one end is in contact, it will just block the through hole of the support frame 300. Under the drive of the guide groove 303, the multiple blocking blocks 304 will be driven to produce displacement so that the ends that are close to each other are offset from each other, thereby opening the through hole of the support frame 300, and the distance they move determines the size of the through hole of the support frame 300. Therefore, the adjustment component can flexibly control the diameter of the through hole of the support frame 300, thereby realizing the adjustment of the spandex yarn passing through the nozzle 108, making it easy to adjust its diameter according to different needs.

[0035] For further information, see Figure 7 and Figure 9In order to make the size of the air flow through the air duct 203 change along with the diameter of the nozzle 108, a windshield 400 is provided. The interiors of the plurality of partitions 106 are fixedly connected to a rotating gear 404. The interiors of the plurality of partitions 106 are slidably connected to a rack 402 meshing with the rotating gear 404. One side of the rack 402 is fixedly connected to a straight groove plate 403. The top of the driving gear 307 is symmetrically fixedly connected to a limiting rod 401 placed inside the straight groove plate 403. When the driving gear 307 rotates forward, it will drive the limiting rod 401 on its top to rotate. At this time, the limiting rod 401 will slide inside the straight groove plate 403, thereby pushing the rack 402 to rotate. 02 forms a displacement, at this time the rack 402 will engage with the rotating gear 404 to drive the wind shield 400 to rotate, and then gradually become horizontal, thereby reducing the cross-sectional area of ​​the air duct 203, so that the airflow passing through the air duct 203 is blocked, thereby reducing the impact force of the wind knife on the spandex yarn. By setting the wind shield 400, the impulse force of the airflow when passing through can be controlled, thereby reducing the impact force of the wind on the spandex yarn, wherein the movement of the wind shield 400 and the adjustment component cooperate with each other, so that it changes its position following the change of the diameter of the nozzle 108, so that the wind force at the air duct 203 is adapted to the diameter of the spandex yarn sprayed from the nozzle 108.

[0036] Among them, see Figure 1 and Figure 2 In order to achieve stable entry of spandex material and control the material at the same time, a feeding assembly is provided, including a distribution plate 101 fixedly connected to the top of the spinneret 100, and the bottom of the distribution plate 101 is connected to the material forming plate 107. The top of the distribution plate 101 is connected to a feeding pipe 102, one end of the feeding pipe 102 is fixedly connected to an extruder 103, and the inside of the feeding pipe 102 is fixedly connected to a screen changer 104. The outer surface of the feeding pipe 102 and one end close to the distribution plate 101 are fixedly connected to a metering pump 105, wherein the extruder 103 pressurizes and heats the raw material to convert it into a molten state to prepare for the subsequent spinning process. Subsequently, the molten spandex raw material enters the spinneret 100 through the extruder 103, the screen changer 104 is used to remove impurities in the raw material to ensure the continuity of the spinning process and the purity of the fiber, and the metering pump 105 plays a role in accurately controlling the amount of spandex fiber added.

[0037] See also Figure 10 A through pipe 201 is fixedly connected in the cavity of the spinneret 100 and above the two wind shields 400. The bottom of the two through pipes 201 and between the multiple partitions 106 are connected with air nozzles 202 respectively. The two through pipes 201 are connected to the air duct 200 at one end away from each other, wherein the air duct 200 is connected to the external air source to transport air flow in the air duct 203, wherein the multiple air nozzles 202 can guide the air flow so that the wind force is evenly distributed inside the air duct 203.

[0038] In summary, when the diameter of the spandex yarn is small, if the wind force of the wind knife is too strong, the fiber may be subjected to excessive impact force, causing the fiber to break or deform. On the contrary, if the wind force is too weak, the fiber may not be fully cooled and solidified, affecting the production speed. Therefore, when the diameter of the spandex yarn is small, reducing the wind force of the wind knife can ensure the smooth transportation of the fiber and improve production efficiency. Through the mutual cooperation of the wind shield 400 and the adjustment component, appropriate wind force can be generated in the air duct 203. The appropriate wind force can control the fluttering and entanglement of the spandex yarn during the spinning process, making the production process smoother. At the same time, the matching of wind force and fiber diameter can ensure that the fiber is subjected to uniform force during the cooling and solidification process, thereby avoiding uneven fiber surface or uneven internal structure. This helps to ensure the quality stability and consistency of the fiber.

[0039] Example 2: Please refer to Figure 1-8 The present invention provides a technical solution: a production process of an adjustable spinning device for producing spandex stretch yarn, comprising the following steps:

[0040] S1, conveying the spandex raw material to the interior of the material plate 107;

[0041] S2, the spandex raw material is pushed by pressure in the feed plate 107 and finally ejected from multiple nozzles 108 to form yarn;

[0042] S3 . Then, an air flow is generated in the air duct 203 to cool the spandex yarns sprayed from the multiple nozzles 108 .

[0043] Among them, in step S2, the temperature in the feed plate 107 is 210-230°C. Within this temperature range, the spandex raw material can be fully melted and has good fluidity, thereby ensuring that the raw material can be smoothly sprayed out from the nozzle to form continuous and uniform fibers. The appropriate temperature can avoid thermal degradation or excessive oxidation of the raw material during the melting process, which helps to maintain the chemical stability and physical properties of the fiber and improve the quality stability of the fiber.

[0044] Working Principle: When in use, the feed pipe 102 is responsible for conveying the spandex raw material to the extruder 103. The extruder 103 pressurizes and heats the raw material to transform it into a molten state, preparing for the subsequent spinning process. Subsequently, the molten spandex raw material enters the spinneret 100 through the extruder 103. The screen changer 104 is used to remove impurities in the raw material to ensure the continuity of the spinning process and the purity of the fiber. The metering pump 105 plays a role in accurately controlling the amount of spandex fiber added. Connecting the air duct 200 to the external air source allows air to enter the interior of the air duct 203 to cool the spun spandex yarn.

[0045] When the nozzles 108 need to be adjusted, the driving motor 306 can be turned on in the forward direction to drive the driving gear 307 to rotate, so that the driving gear 307 engages with the driven gears 308 on both sides thereof and drives the two movable cover plates 302 to rotate in the same direction at the same time. At this time, the rotation of the movable cover plate 302 will drive the multiple guide grooves 303 to produce displacement and drive the positioning rod 305 to slide inside it, thereby driving the multiple blocking blocks 304 to slide on the guide rail 301. At this time, one end of the multiple blocking blocks 304 will be close to each other. The through hole of the support frame 300 is thereby reduced. At the same time, when the driving gear 307 rotates forward, the limiting rod 401 on its top will be driven to rotate. At this time, the limiting rod 401 will slide inside the straight groove plate 403, thereby pushing the rack 402 to form a displacement. At this time, the rack 402 will engage with the rotating gear 404 to drive the wind shield 400 to rotate, and then gradually become horizontal, thereby reducing the cross-sectional area of ​​the air duct 203, so that the airflow passing through the air duct 203 is blocked, thereby slowing down the impact force of the wind knife on the spandex yarn.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable spinning device for producing spandex stretch yarn, comprising a spinneret (100) having a cavity inside, characterized in that: A feed plate (107) is fixedly connected to the cavity of the spinneret (100), a plurality of nozzles (108) for spandex yarns to pass through are provided at the bottom of the feed plate (107), a plurality of partitions (106) are fixedly connected to the cavity of the spinneret (100), a plurality of partitions (106) are provided in the cavity of the spinneret (100) to divide a plurality of air ducts (203) for air flow to pass through, a feed assembly for conveying spandex raw materials is constructed on the top of the spinneret (100), a transmission cavity is provided inside the feed plate (107), a plurality of adjustment assemblies for controlling the diameter of the nozzles (108) are provided in the transmission cavity, and a windshield (400) for blocking air flow is rotatably connected in the cavity of the spinneret (100) and passing through the plurality of partitions (106); The adjustment component includes a support frame (300) fixedly connected to the transmission cavity of the feed plate (107) and located at the center of the plurality of nozzles (108), the interiors of the plurality of support frames (300) are provided with through holes having the same diameter as the plurality of nozzles (108), the tops of the plurality of support frames (300) are evenly provided with blocking blocks (304), the tops of the plurality of support frames (300) are provided with guide rails (301) for the plurality of blocking blocks (304) to slide, and the tops of the plurality of support frames (300) are provided with a driving mechanism for driving the plurality of blocking blocks (304) to move synchronously; The driving mechanism comprises a movable cover plate (302) rotatably connected to the top of the plurality of support frames (300), the tops of the plurality of blocking blocks (304) are fixedly connected to positioning rods (305), and the interiors of the plurality of movable cover plates (302) are fixedly connected to a plurality of guide grooves (303) for the positioning rods (305) to slide; A driving motor (306) is fixedly connected to the transmission cavity of the feed plate (107), a driving gear (307) is fixedly connected to the output end of the driving motor (306), and a driven gear (308) meshing with the driving gear (307) is evenly fixedly connected to the outer surface of the movable cover plate (302); The windshield (400) is located inside a plurality of partitions (106) and is fixedly connected to a rotating gear (404); the interiors of the plurality of partitions (106) are slidably connected to a rack (402) meshing with the rotating gear (404); one side of the rack (402) is fixedly connected to a straight groove plate (403); and the top of the driving gear (307) is symmetrically fixedly connected to a limiting rod (401) disposed inside the straight groove plate (403); A through pipe (201) is fixedly connected in the cavity of the spinneret (100) and located above the two windshields (400); the bottoms of the two through pipes (201) and located between the plurality of partitions (106) are respectively connected to air nozzles (202); and the ends of the two through pipes (201) that are away from each other are both connected to the air duct (200).

2. The adjustable spinning device for producing spandex stretch yarn according to claim 1, characterized in that: The feed assembly includes a distribution plate (101) fixedly connected to the top of the spinneret (100), the bottom of the distribution plate (101) is connected to the feed plate (107), the top of the distribution plate (101) is connected to a feed pipe (102), and one end of the feed pipe (102) is fixedly connected to an extruder (103).

3. The adjustable spinning device for producing spandex stretch yarn according to claim 2, characterized in that: The interior of the feed pipe (102) is fixedly connected to a screen changer (104), and the outer surface of the feed pipe (102) and one end close to the distribution plate (101) is fixedly connected to a metering pump (105).

4. The production process of an adjustable spinning device for producing spandex stretch yarn according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1, conveying the spandex raw material to the interior of the material forming plate (107); S2, the spandex raw material is pushed under pressure in the feed plate (107) and finally ejected from multiple nozzles (108) to form yarn; S3. Then, an air flow is generated in the air duct (203) to cool the spandex yarns ejected from the plurality of nozzles (108).

5. The production process of an adjustable spinning device for producing spandex stretch yarn according to claim 4, characterized in that: In step S2, the temperature inside the material plate (107) is 210-230°C.

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