High-performance carbon fiber spinneret

Abstract

The application relates to a spinning plate technical field, in particular to a high-performance carbon fiber spinning plate, which comprises an input pipe, the outside of the input pipe is fixedly connected with a forming pipe for high-performance carbon fiber spinning, a transmission assembly and a dredging assembly are arranged between the input pipe and the forming pipe; in an initial state, the transmission assembly blocks the channel between the input pipe and the forming pipe. The lifting ring structure controlled by the elastic telescopic rod is arranged, so that the channel between the input pipe and the forming pipe can be automatically opened and closed under the action of pressure, the first transverse channel, the annular channel and the second transverse channel are utilized to realize uniform shunt conveying of the molten material, the dredging assembly is in a standby state in a normal conveying state, and the spinning process is not affected; when the spinning hole is blocked to cause pressure rise, the lifting ring continues to move upwards and drives the gear and the gear wheel to engage, so that the plug and the dredging rod drive the spinning hole to reciprocating dredge, and the blockage can be removed without stopping.

Description

Technical Field

[0001] This invention relates to the field of spinneret technology, specifically to a high-performance carbon fiber spinneret. Background Technology

[0002] In the carbon fiber preparation process, the spinning process is an important step in the formation of carbon fiber precursors. The spinneret, as a key component in the spinning assembly, has a large number of micro-spinning holes on its body. Under pressure, the spinning solution is squeezed out through the spinneret holes to form a fine stream, which then forms carbon fiber precursor fibers during the subsequent solidification process.

[0003] Currently, common carbon fiber spinnerets typically deliver spinning solution to each spinneret hole to complete the extrusion molding process.

[0004] However, due to the extremely small size and large number of spinneret orifices, during long-term spinning, tiny gel particles, impurities, or polymer deposits in the spinning solution can easily accumulate at the spinneret orifices, resulting in localized blockage.

[0005] If some spinnerets become clogged, it will not only affect the normal extrusion of the spinning solution, but also easily lead to unstable spinning conditions. It may even require machine shutdown to clean or replace the spinneret, thereby affecting the continuous operation efficiency of the equipment. Summary of the Invention

[0006] The purpose of this invention is to provide a high-performance carbon fiber spinneret to solve the problem mentioned in the background art, which is that once some spinneret holes become blocked, it will not only affect the normal extrusion of the spinning solution, but also easily lead to unstable spinning conditions, and even require machine shutdown to clean or replace the spinneret, thereby affecting the continuous operation efficiency of the equipment.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A high-performance carbon fiber spinneret includes an input pipe for connection to a carbon fiber molten material conveying system pipeline. A forming pipe for high-performance carbon fiber spinning is fixedly connected to the outside of the input pipe. A transmission assembly and a clearing assembly are provided between the input pipe and the forming pipe. In an initial state, the transmission assembly blocks the channel between the input pipe and the forming pipe. In a working state, the transmission assembly connects the channel between the input pipe and the forming pipe. The lifting part of the transmission assembly is vertically displaced by the pressure inside the forming pipe and drives the clearing assembly to clear the forming pipe.

[0008] Preferably, the forming tube includes a sleeve fixed outside the input tube, and a forming disc is fixedly connected to the lower part of the sleeve. The forming disc has a spinneret hole for spinning.

[0009] Preferably, the forming tube has an air chamber inside, the main body of the unblocking component is located inside the air chamber, the unblocking component includes a lifting rod driven by the transmission component, the lower part of the lifting rod passes through the outer wall of the air chamber and extends into its inner cavity, and its end is fixedly connected to a lifting plate, the lifting plate has a through hole inside, a toothed plate is fixedly installed at the through hole of the lifting plate, and the toothed plate is meshed with a gear rotatably installed inside the air chamber when the lifting plate is in the rising state.

[0010] Preferably, a turntable is fixedly connected to one side of the gear, and a drive rod is fixedly connected to one side of the turntable. A lifting column is slidably installed at the center of the air chamber. The drive rod is inserted into the slot plate fixed outside the lifting column. The drive rod drives the lifting column to move up and down reciprocally under the drive of the turntable. An insert plate is fixedly connected to the lower part of the lifting column, and a clearing rod is fixedly connected to the lower part of the insert plate. The clearing rod of the insert plate passes through the air chamber and extends into the sleeve, and the centers of the spinneret holes are aligned.

[0011] Preferably, the transmission assembly includes an elastic telescopic rod fixed to the input pipe, a lifting ring fixedly connected to the lower part of the elastic telescopic rod, a fixed pipe fixedly connected to the lower part of the input pipe, and a first transverse channel opened at the bottom of the input pipe communicating with an annular channel formed between the input pipe and the fixed pipe.

[0012] Preferably, the lifting ring has several second transverse channels for diverting flow. In its initial state, the lifting ring blocks the annular channels, and in the hydraulically driven state, it moves upward against the tension of the elastic telescopic rod and then communicates with the inner cavity of the sleeve.

[0013] Preferably, the elastic telescopic rod includes a base fixed on the input pipe, a lead screw is rotatably installed inside the base, the lead screw is screwed to a slide plate slidably installed in the inner cavity of the base, and a slide rod is slidably installed at the lower part of the base, the upper part of the slide rod being connected to the lower part of the slide plate by a spring.

[0014] Preferably, the upper part of the lead screw extends through the base to the outside and is fixedly connected to a knob, and the upper part of the slide rod is provided with a slot, and the plug fixed at the lower part of the lead screw is inserted into the slot to achieve stable support of the lead screw.

[0015] Preferably, the sleeve has several diversion channels inside to divert and guide the molten material, and the upper part of the spinneret hole has a chamfer to guide the insertion plate.

[0016] Preferably, a flange is fixedly connected to the upper part of the input pipe, the flange has a screw hole, and the input pipe has an input channel for connecting to the pipeline of the carbon fiber molten material transmission system.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting a transmission component driven by an elastic telescopic rod and a clearing component linked thereto between the input pipe and the forming pipe, the spinneret can achieve automatic adjustment and active clearing function according to the change of fluid pressure during the spinning process. 2. In the initial state, the device blocks the annular channel by lifting rings, which can prevent the material from entering the spinneret area prematurely when the material pressure is unstable at the beginning of the equipment start-up, thereby ensuring stable spinneret conditions. When the material pressure reaches the set value, the lifting ring moves upward under the hydraulic action to overcome the tension of the elastic telescopic rod, so that the first transverse channel, the annular channel and the second transverse channel are gradually connected, realizing the uniform diversion and stable conveying of molten material. At the same time, under normal conveying conditions, the toothed plate and the gear maintain a avoidance relationship, which does not affect the spinneret process. When the spinneret hole shows a tendency to be blocked, the pressure inside the forming tube increases and pushes the lifting ring to continue to move upward. The second transverse channel exposes a larger flow area, enhances the hydraulic driving force, and makes the toothed plate and the gear mesh. This drives the gear-turntable-drive rod-lifting column to form a mechanical linkage, which drives the insert plate and the unblocking rod to reciprocate to unblock the spinneret hole. The blockage can be removed and the spinneret hole can be restored to unobstructed flow without stopping the machine. In addition, by setting up an elastic telescopic rod structure with a knob for adjustment, users can adjust the spring preload according to different material viscosities and conveying pressures, thereby changing the opening pressure threshold of the lifting ring and making the device suitable for different working conditions. This not only enables automatic pressure sensing and adaptive unblocking during the spinning process, but also improves the uniformity of material distribution and spinning stability, reduces the number of downtime maintenance, and thus significantly improves the continuity, stability and production efficiency of carbon fiber spinning production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 This is a schematic diagram of the cross-sectional structure of the molded tube of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the formed tube in another state of the present invention; Figure 5 This is a schematic diagram of the input tube structure of the present invention; Figure 6 This is a schematic diagram of the unblocking component structure of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the input pipe of the present invention; Figure 8 This is a schematic diagram of the first lifting rod structure of the present invention; Figure 9 This is a schematic diagram of the groove plate structure of the present invention; Figure 10 This is a schematic diagram of the gear structure of the present invention; Figure 11 This is a schematic diagram of the sleeve structure of the present invention; Figure 12 This is a schematic diagram of the cross-sectional structure of the molding disc of the present invention; Figure 13 This is a schematic diagram of the cross-sectional structure of the elastic telescopic rod of the present invention; Figure 14 This is a schematic diagram of the cross-sectional structure of the slide bar of the present invention.

[0019] The attached diagram lists the components represented by each number as follows: 100. Inlet pipe; 200. Transmission assembly; 300. Forming pipe; 400. Unblocking assembly; 500. Air chamber; 110. Flange; 120. Screw hole; 130. Input channel; 140. First transverse channel; 170. Annular channel; 210. Elastic telescopic rod; 220. Fixed tube; 230. Lifting ring; 240. Second transverse channel; 211. Base; 212. Lead screw; 213. Slide plate; 214. Insert rod; 215. Spring; 216. Slide rod; 217. Knob; 218. Slot; 310. Sleeve; 320. Forming disc; 330. Spinneret; 340. Chamfer; 350. Diverter channel; 410. Lifting rod; 420. Lifting plate; 430. Gear plate; 440. Gear; 450. Turntable; 460. Drive rod; 470. Slot plate; 480. Lifting column; 490. Insert plate. Detailed Implementation

[0020] 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.

[0021] Example 1: Refer to Figures 1-14A high-performance carbon fiber spinneret includes an input pipe 100 for connection to a carbon fiber molten material conveying system pipeline. A forming pipe 300 for high-performance carbon fiber spinning is fixedly connected to the outside of the input pipe 100. A transmission assembly 200 and a clearing assembly 400 are provided between the input pipe 100 and the forming pipe 300. In the initial state, the transmission assembly 200 blocks the channel between the input pipe 100 and the forming pipe 300. In the working state, the transmission assembly 200 connects the channel between the input pipe 100 and the forming pipe 300. The lifting part of the transmission assembly 200 is vertically displaced by the pressure inside the forming pipe 300 and drives the clearing assembly 400 to clear the forming pipe 300.

[0022] In the above-mentioned high-performance carbon fiber spinneret, when in operation, the high-performance carbon fiber molten material enters the device through the input pipe 100 via the material conveying system. In the initial non-working state, the lifting part of the transmission component 200 is in a closed position, thereby blocking the communication channel between the input pipe 100 and the forming pipe 300, preventing the material from entering the spinneret area prematurely under unstable conditions. When the system is started and continuously feeds molten carbon fiber material into the input pipe 100, the material gradually forms a stable pressure inside the input pipe 100. Under the action of this pressure, the lifting part of the transmission component 200 is pushed by the reverse fluid pressure from the direction of the forming pipe 300 and produces a vertical displacement, so that the originally blocked channel is gradually opened, thereby realizing the connection between the input pipe 100 and the forming pipe 300, allowing the molten material to enter the forming pipe 300 and be extruded through the spinneret structure to form carbon fiber filaments. During continuous spinning, if the flow channel is blocked in a local area of ​​the spinneret 330 or the forming tube 300 due to the accumulation of gel particles, tiny impurities or polymer deposits, the flow resistance inside the forming tube 300 increases and the local pressure rises. This pressure change further acts on the lifting part of the transmission component 200, causing it to generate additional displacement and drive the unblocking component 400 to move through the mechanical transmission structure. Under mechanical linkage, the unblocking component 400 periodically or triggers unblocks the inside of the forming tube 300 or the position of the spinneret channel, thereby bringing the blockage back into the material flow and discharging it with the molten material, so that the spinneret 330 is unobstructed. After the blockage is cleared, the internal pressure of the forming tube 300 returns to normal working condition, the transmission component 200 returns to a stable position under the action of the reset structure, and the unblocking component 400 stops operating. This realizes the automatic pressure sensing, mechanical linkage and real-time unblocking functions of the device in the spinning process. It can adaptively clean local blockages without stopping the machine to disassemble the spinneret, improve the spinneret stability and ensure the continuous and stable production of carbon fiber.

[0023] In this embodiment, the forming tube 300 includes a sleeve 310 fixed to the outside of the input tube 100. A forming disc 320 is fixedly connected to the lower part of the sleeve 310. The forming disc 320 has a spinneret hole 330 for spinning. A plurality of diversion channels 350 are opened inside the sleeve 310 to realize the diversion and guidance of the molten material. A chamfer 340 is opened on the upper part of the spinneret hole 330 to realize the guiding action of the insert plate 490. A flange 110 is fixedly connected to the upper part of the input tube 100. A screw hole 120 is opened on the flange 110. An input channel 130 for connecting to the carbon fiber molten material transmission system pipeline is opened inside the input tube 100.

[0024] During operation, molten carbon fiber material enters the input channel 130 from the external material conveying system through a pipe connected to the upper flange 110 of the input pipe 100. The flange 110 is bolted to the external equipment through the screw hole 120, thereby ensuring the sealed connection and structural stability between the input pipe 100 and the molten material conveying system.

[0025] During continuous conveying, the molten material enters the forming tube 300 structure located outside the input pipe 100 along the input channel 130. The forming tube 300 includes a sleeve 310 fixedly connected to the outside of the input pipe 100 and a forming disc 320 fixed at the lower part of the sleeve 310. The molten material first enters the internal space of the sleeve 310. Since the sleeve 310 has several diversion channels 350 opened in the circumferential or radial direction, the molten material is dispersed and guided to different positions by the diversion channels 350 during the flow process, making the material flow distribution in the area of ​​the forming disc 320 more uniform, thereby avoiding the phenomenon of uneven local pressure or unstable spinning caused by single channel feeding. The molten material, which is then diverted and guided, enters the forming disc 320 located at the lower part of the sleeve 310, and is extruded outward through a large number of spinnerets 330 on the forming disc 320 to form fine filaments. During the spinnereting process, the chamfered structure 340 provided on the upper part of the spinneret 330 can guide and transition the material when it flows into the inlet of the spinneret 330, making the molten material flow more smoothly when it enters the tiny spinneret 330. At the same time, when it is necessary to perform unblocking and maintenance, the chamfered structure 340 can also provide guiding space for the insertion of the insert plate 490, so that the unblocking parts can accurately enter the inlet area of ​​the spinneret 330 for cleaning, thereby reducing the wear on the wall of the spinneret 330. With the above-mentioned structure, the molten material is input through the input pipe 100, uniformly distributed through the flow distribution channel 350 inside the sleeve 310, and then enters the forming disc 320. It is then stably extruded through the spinneret 330 to form carbon fiber filaments, thereby achieving uniform flow of molten material, stable forming, and unblocking and guiding functions of the spinneret 330, thus improving the stability of the spinning process and the forming efficiency.

[0026] In this embodiment, an air chamber 500 is provided inside the forming tube 300, and the main body of the unblocking component 400 is located inside the air chamber 500. The unblocking component 400 includes a lifting rod 410 driven by the transmission component 200. The lower part of the lifting rod 410 passes through the outer wall of the air chamber 500 and extends into its inner cavity, where a lifting plate 420 is fixedly connected. A through hole is opened inside the lifting plate 420, and a toothed plate 430 is fixedly installed at the through hole of the lifting plate 420. When the lifting plate 420 is in the raised state, the toothed plate 430 meshes with a gear 440 rotatably installed inside the air chamber 500. A turntable 450 is fixedly connected to one side of the 440, and a drive rod 460 is fixedly connected to one side of the turntable 450. A lifting column 480 is slidably installed at the center of the air chamber 500. The drive rod 460 is inserted into the slot plate 470 fixed outside the lifting column 480. The drive rod 460 drives the lifting column 480 to move up and down repeatedly under the drive of the turntable 450. An insert plate 490 is fixedly connected to the lower part of the lifting column 480. A cleaning rod is fixedly connected to the lower part of the insert plate 490. The cleaning rod of the insert plate 490 passes through the air chamber 500 and extends into the sleeve 310, and the center of the spinneret hole 330 is aligned.

[0027] During operation, molten carbon fiber material enters the sleeve 310 through the input pipe 100 and is guided by the diversion channel 350 to the spinneret 330 of the forming disc 320 for extrusion into filaments. Under normal spinning conditions, the transmission component 200 maintains a stable position, keeping the lifting rod 410 in its initial position. At this time, the unblocking component 400 in the air chamber 500 inside the forming tube 300 is in a standby state. The lifting plate 420 and its toothed plate 430 are in a non-driven or slightly contacting state with the gear 440 inside the air chamber 500. The lifting column 480 and its lower end connected to the insert plate 490 and the unblocking rod are kept in a clearance position above the spinneret 330, which does not affect the normal flow of molten material and the spinning process. When the spinneret 330 tends to become clogged due to the gradual accumulation of tiny gel particles, impurities, or polymer deposits, the flow resistance inside the forming tube 300 increases, causing a rise in local pressure. This pressure change acts on the lifting rod 410 through the transmission assembly 200, causing the lifting rod 410 to undergo an upward vertical displacement under pressure. The lifting rod 410 drives the lifting plate 420 fixed below it to rise synchronously. During the rise of the lifting plate 420, the toothed plate 430 fixed inside it gradually engages with the gear 44 rotatably mounted inside the air chamber 500. 0 generates stable meshing and drives the gear 440 to rotate. While the gear 440 rotates, it drives the turntable 450 fixedly connected to one side to rotate synchronously. The drive rod 460 on the turntable 450 then makes a circular motion. Since the drive rod 460 is inserted into the guide groove inside the outer slot plate 470 of the lifting column 480, when the drive rod 460 rotates with the turntable 450, the circular motion is converted into a reciprocating force in the vertical direction, thereby driving the lifting column 480, which is slidably installed at the center of the air chamber 500, to produce a periodic up and down reciprocating motion. During the reciprocating motion, the lifting column 480 drives the lower fixedly connected insert plate 490 to rise and fall synchronously. The unblocking rod connected to the lower end of the insert plate 490 passes through the bottom of the air chamber 500 and extends into the sleeve 310 and is aligned with the center of the spinneret 330. When the lifting column 480 moves downward, the unblocking rod is inserted downward into the inlet area of ​​the spinneret 330 to push, break or loosen the gel particles and deposits attached to the inlet of the spinneret 330 or the inner wall of the channel, so that the blockage can re-enter the molten material flow system and be discharged with the material. When the lifting column 480 moves upward, the unblocking rod retracts from the spinneret 330 area, thus providing space for the normal flow of molten material. Under the continuous action of the above structure, the toothed plate 430-gear 440-turntable 450-drive rod 460-lifting column 480 form a mechanical linkage transmission chain, which enables the unblocking rod to automatically perform periodic insertion and withdrawal actions when it detects pressure changes, thereby achieving automatic unblocking of the spinneret 330 area. When the blockage is cleared, the internal pressure of the forming tube 300 returns to the normal level, the transmission component 200 returns to the initial position, the lifting rod 410 and the lifting plate 420 reset, the toothed plate 430 gradually disengages from the gear 440, the gear 440 stops rotating, and the lifting column 480 and the unblocking rod stop reciprocating, thus allowing the entire unblocking component 400 to return to the standby state. This achieves the automatic sensing and mechanical unblocking function of the spinneret 330 during the spinning process, while ensuring the continuous and stable operation of the spinning system without the need for shutdown and disassembly, thereby improving the continuity and reliability of carbon fiber spinning production.

[0028] In this embodiment, the transmission assembly 200 includes an elastic telescopic rod 210 fixed on the input pipe 100. A lifting ring 230 is fixedly connected to the lower part of the elastic telescopic rod 210. A fixed pipe 220 is fixedly connected to the lower part of the input pipe 100. A first transverse channel 140 is opened at the bottom of the input pipe 100 and communicates with the annular channel 170 formed between the input pipe 100 and the fixed pipe 220. The lifting ring 230 has several second transverse channels 240 for diversion. In the initial state, the lifting ring 230 blocks the annular channel 170, and in the hydraulically driven state, it overcomes the tension of the elastic telescopic rod 210 and moves upward to communicate with the inner cavity of the sleeve 310.

[0029] In the initial non-working state or before the pressure is established, the elastic telescopic rod 210 fixed on the input pipe 100 is in a naturally extended state, and the lifting ring 230 connected to its lower end is in the lowest position. At this time, the outer wall of the lifting ring 230 and the fixed pipe 220 fixedly connected to the lower part of the input pipe 100 form a close sealing structure, thereby blocking the annular channel 170 formed between the input pipe 100 and the fixed pipe 220, so that the molten material in the input channel 130 cannot enter the sleeve 310 and the spinning area; Once the equipment is in normal working condition, the molten material continuously enters the input pipe 100 and gradually forms a stable hydraulic pressure. This pressure acts on the circumferential area of ​​the lifting ring 230 through the first transverse channel 140 opened at the bottom of the input pipe 100. When the hydraulic thrust gradually increases and exceeds the tension of the elastic telescopic rod 210, the lifting ring 230 begins to move upward along the axial direction of the input pipe 100 and compresses the elastic telescopic rod 210. During this upward movement, several second transverse channels 240 opened on the lifting ring 230 are gradually exposed at the position of the annular channel 170, so that the first transverse channel 140, the annular channel 170 and the second transverse channel 240 are interconnected, thereby forming a multi-point diversion structure, so that the molten material enters the sleeve 310 evenly from the input pipe 100 and further flows to the spinneret hole 330 of the forming disc 320 for spinning. In this normal transmission state, the second transverse channel 240 is only partially exposed to meet the stable material supply requirements. At the same time, the toothed plate 430 driven by the lifting ring 230 is still located in the avoidance position below the gear 440 and does not contact or mesh with the gear 440 in the air chamber 500. Therefore, the unblocking component 400 remains in standby mode and does not participate in the operation. When the spinneret 330 or the forming channel tends to become blocked due to gel particles, impurities or polymer deposits, the flow resistance in the sleeve 310 and forming disc 320 area increases rapidly, causing the internal pressure of the forming tube 300 to rise further. This pressure continues to act on the lifting ring 230 through the first transverse channel 140, causing the lifting ring 230 to continue to move upward from its original position. This further exposes the second transverse channel 240 and forms a larger communication area. On the one hand, this increases the fluid action area and further enhances the hydraulic pushing force on the lifting ring 230. On the other hand, it allows the fluid pressure to act more directly on the subsequent transmission structure, thereby promoting a more powerful drive for the unblocking component 400. As the lifting ring 230 moves further upward, the toothed plate 430 fixed on it enters the meshing position with the gear 440 inside the air chamber 500 and begins to drive the gear 440 to rotate. The gear 440 drives the turntable 450 and the drive rod 460 to form a rotational motion. Through the cooperation between the drive rod 460 and the groove plate 470 of the lifting column 480, the rotational motion is converted into a vertical reciprocating motion, thereby pushing the lifting column 480 and the insert plate 490 and the unblocking rod connected to its lower end to move downward, so that the unblocking rod is inserted into the sleeve 310 and aligned with the area of ​​the spinneret hole 330 to push, break or loosen the blockage, and bring the accumulated particles back into the molten material flow system and discharge them with the material. Once the blockage is cleared, the internal pressure of the forming tube 300 returns to normal operating conditions. The lifting ring 230 falls back to the normal transmission position under the restoring force of the elastic telescopic rod 210. The toothed plate 430 then disengages from the gear 440, the unblocking component 400 stops driving, and the insert plate 490 and the unblocking rod reset, thereby restoring the device to a stable spinning state. This achieves the adaptive spinning hole 330 cleaning function, which automatically distinguishes between normal conveying and blockage conditions by utilizing changes in hydraulic pressure and triggers mechanical unblocking actions when a blockage occurs.

[0030] Example 2: In this example, the elastic telescopic rod 210 includes a base 211 fixed on the input pipe 100. A lead screw 212 is rotatably installed inside the base 211. The lead screw 212 is screwed to a slide plate 213 slidably installed in the inner cavity of the base 211. A slide rod 216 is also slidably installed on the lower part of the base 211. The upper part of the slide rod 216 is connected to the lower part of the slide plate 213 through a spring 215. The upper part of the lead screw 212 extends through the base 211 to the outside and is fixedly connected to a knob 217. A slot 218 is opened on the upper part of the slide rod 216. A rod 214 fixed on the lower part of the lead screw 212 is inserted into the slot 218 to achieve stable support for the lead screw 212.

[0031] During operation, the elastic telescopic rod 210 is used to provide an adjustable initial tension for the lifting ring 230 and ensure its stable reset during the hydraulic drive process. Its structure includes a base 211 fixedly installed outside the input pipe 100, a lead screw 212 rotatably installed inside the base 211, and the lead screw 212 is connected to the slide plate 213 slidably arranged in the inner cavity of the base 211 by threaded engagement.

[0032] In the initial state, the slide plate 213 is located in the middle of the base 211. The lower end of the slide plate 213 is connected to the slide rod 216, which is slidably installed on the lower part of the base 211, through the spring 215. This forms a force transmission structure with elastic recovery capability between the slide plate 213 and the slide rod 216. The lower end of the slide rod 216 is connected to the lifting ring 230, so that the lifting ring 230 can overcome the tension of the spring 215 and move axially along the input pipe 100 when subjected to external hydraulic pressure. During the adjustment process, the user manually rotates the knob 217 located on the upper outer side of the base 211 to drive the lead screw 212 to rotate. Since the lead screw 212 and the slide plate 213 are connected by a threaded structure, when the lead screw 212 rotates, it will drive the slide plate 213 to move up and down axially inside the base 211. When the slide plate 213 moves downward, it will compress the spring 215 between the slide plate 213 and the slide rod 216, so that the spring 215 generates a greater preload force, thereby applying a greater initial tension to the lifting ring 230 through the slide rod 216, increasing the resistance that the lifting ring 230 needs to overcome to be pushed upward under hydraulic action, so that the device opens the material channel only under higher pressure conditions. Conversely, when the knob 217 is rotated in the opposite direction to move the slide plate 213 upward, the compression of the spring 215 decreases, thereby reducing the initial tension applied by the slide bar 216 to the lifting ring 230, so that the lifting ring 230 can move upward under lower hydraulic conditions to meet the adjustment requirements of the opening pressure under different spinning conditions. Meanwhile, to ensure the stability of the lead screw 212 during the adjustment process, a slot 218 is provided on the upper part of the slide bar 216. The insert rod 214 fixed at the lower end of the lead screw 212 is inserted into the slot 218. When the lead screw 212 rotates and drives the slide plate 213 to move, the insert rod 214 always guides and slides within the slot 218, thereby providing auxiliary support and limiting effect on the lower end of the lead screw 212, and preventing the lead screw 212 from swaying or being subjected to uneven force, which would affect the adjustment accuracy.

[0033] With the above structure, the user can adjust the preload of the spring 215 inside the elastic telescopic rod 210 by rotating the external knob 217, thereby indirectly changing the initial tension applied to the lifting ring 230 by the slide rod 216. This allows the spinneret device to flexibly adjust the opening conditions according to different material viscosities, conveying pressures and production conditions, thereby improving the stability and adaptability of the entire spinneret system.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-performance carbon fiber spinneret, characterized in that, It includes an input pipe (100) for connection to a carbon fiber molten material transport system pipeline, and a forming pipe (300) for high-performance carbon fiber spinning is fixedly connected to the outside of the input pipe (100). A transmission assembly (200) and a drainage assembly (400) are provided between the input pipe (100) and the forming pipe (300). In the initial state, the transmission assembly (200) blocks the channel between the input pipe (100) and the forming pipe (300); In the working state, the transmission component (200) connects the channel between the input pipe (100) and the forming pipe (300). The lifting part of the transmission component (200) is subjected to the pressure inside the forming pipe (300) and undergoes vertical displacement, driving the unblocking component (400) to perform unblocking action on the forming pipe (300).

2. The high-performance carbon fiber spinneret according to claim 1, characterized in that, The forming tube (300) includes a sleeve (310) fixed outside the input tube (100), and a forming disc (320) is fixedly connected to the lower part of the sleeve (310). The forming disc (320) has a spinneret hole (330) for spinning.

3. The high-performance carbon fiber spinneret according to claim 2, characterized in that, The forming tube (300) has an air chamber (500) inside. The main body of the unblocking component (400) is located inside the air chamber (500). The unblocking component (400) includes a lifting rod (410) driven by the transmission component (200). The lower part of the lifting rod (410) passes through the outer wall of the air chamber (500) and extends into its inner cavity. A lifting plate (420) is fixedly connected to its end. A through hole is opened inside the lifting plate (420). A toothed plate (430) is fixedly installed at the through hole of the lifting plate (420). The toothed plate (430) meshes with a gear (440) rotatably installed inside the air chamber (500) when the lifting plate (420) is in the rising state.

4. The high-performance carbon fiber spinneret according to claim 3, characterized in that, A turntable (450) is fixedly connected to one side of the gear (440), and a drive rod (460) is fixedly connected to one side of the turntable (450). A lifting column (480) is slidably installed at the center of the air chamber (500). The drive rod (460) is inserted into the groove plate (470) fixed outside the lifting column (480). The drive rod (460) drives the lifting column (480) to move up and down repeatedly under the drive of the turntable (450). A plug plate (490) is fixedly connected to the lower part of the lifting column (480). A drain rod is fixedly connected to the lower part of the plug plate (490). The drain rod of the plug plate (490) passes through the air chamber (500) and extends into the sleeve (310), and the center of the spinneret hole (330) is aligned.

5. The high-performance carbon fiber spinneret according to claim 4, characterized in that, The transmission assembly (200) includes an elastic telescopic rod (210) fixed on the input pipe (100), a lifting ring (230) fixedly connected to the lower part of the elastic telescopic rod (210), a fixed pipe (220) fixedly connected to the lower part of the input pipe (100), and a first transverse channel (140) opened at the bottom of the input pipe (100) communicating with an annular channel (170) formed between the input pipe (100) and the fixed pipe (220).

6. The high-performance carbon fiber spinneret according to claim 5, characterized in that, The lifting ring (230) has several second transverse channels (240) for diversion. In the initial state, the lifting ring (230) blocks the annular channel (170), and in the hydraulically driven state, it moves upward to overcome the tension of the elastic telescopic rod (210) and communicates with the inner cavity of the sleeve (310).

7. The high-performance carbon fiber spinneret according to claim 5, characterized in that, The elastic telescopic rod (210) includes a base (211) fixed on the input pipe (100). A lead screw (212) is rotatably installed inside the base (211). The lead screw (212) is screwed to a slide plate (213) slidably installed in the inner cavity of the base (211). A slide rod (216) is also slidably installed on the lower part of the base (211). The upper part of the slide rod (216) is connected to the lower part of the slide plate (213) by a spring (215).

8. The high-performance carbon fiber spinneret according to claim 7, characterized in that, The upper part of the lead screw (212) extends through the base (211) to the outside and is fixedly connected to a knob (217). The upper part of the slide rod (216) has a slot (218). The insert rod (214) fixed at the lower part of the lead screw (212) is inserted into the slot (218) to achieve stable support of the lead screw (212).

9. The high-performance carbon fiber spinneret according to claim 8, characterized in that, The sleeve (310) has several diversion channels (350) inside to divert and guide the molten material, and the upper part of the spinneret (330) has a chamfer (340) to guide the insertion plate (490).

10. The high-performance carbon fiber spinneret according to claim 8, characterized in that, A flange (110) is fixedly connected to the upper part of the input pipe (100), and a screw hole (120) is provided on the flange (110). An input channel (130) for connecting to the pipeline of the carbon fiber molten material transmission system is provided inside the input pipe (100).

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