Extrusion equipment for aramid 1414 fiber production

Abstract

The application relates to the technical field of aramid fiber production, in particular to extrusion equipment for aramid 1414 fiber production, which comprises a continuous spinneret installed at the discharging end of a spinning device, the continuous spinneret comprises an installation channel installed on the spinning device, the bottom of the installation channel is provided with an installation port, a plurality of clamping assemblies are arranged on the installation port, the outer side of the installation channel is provided with two switching chambers, the side of each switching chamber is provided with a stripping port, the stripping port is provided with a sealing device, a quick stripping device is further installed on the switching chamber, a partition device is installed in the installation channel, an assembled spinneret plate is installed on the installation port, the assembled spinneret plate is composed of two adjusting assembled plates, a plurality of assembled spinneret holes are arranged on the surface of the assembled spinneret plate, a limiting push device for pushing the assembled spinneret plate to ascend is installed below the installation port, and a pressure reducing device is further installed on the side of the installation channel. The application effectively saves manpower and improves production efficiency.

Description

Technical Field

[0001] This invention relates to the field of aramid fiber production technology, specifically to an extrusion device for producing aramid 1414 fiber. Background Technology

[0002] Aramid 1414 fiber (poly(p-phenylene terephthalamide) fiber, PPTA) is a high-performance organic fiber material widely used in aerospace, defense, personal protective equipment, and composite material reinforcement due to its excellent mechanical properties, high-temperature resistance, and chemical stability. Its production process typically employs a low-temperature solution polycondensation method, using terephthaloyl chloride (TPC) and p-phenylenediamine (PPD) as monomers. A polymer solution is generated through a polycondensation reaction in a polar organic solvent (such as N-methylpyrrolidone, NMP). After degassing and filtration, the solution enters the wet spinning process. During spinning, the polymer solution is extruded through a spinneret into a coagulation bath, where it undergoes biaxial stretching, washing, drying, and oiling to form nascent fibers. Finally, high-strength, high-modulus aramid 1414 fiber products are obtained through hot stretching and setting.

[0003] In the extrusion process of existing aramid 1414 fiber production lines, the spinneret of the spinning assembly is the core component for controlling filament size. The high-strength aramid 1414 fiber production line disclosed in Chinese Patent No. CN222008198U uses an extruder connected to a concentrated sulfuric acid storage tank via pipeline I and a resin silo via pipeline II, ensuring a stable supply and mixing of raw materials. After subsequent processing by a degassing kettle and filter, the molten polymer passes through the spinneret of the spinning assembly to form initial filaments. The working principle of the spinneret is as follows: the molten polymer is spun into filaments through preset fixed orifices, and the filament diameter directly depends on the geometric dimensions of the spinneret orifices.

[0004] However, this technical solution has significant drawbacks: when production demands change and require adjustments to the filament diameter, continuous production must be interrupted, and spinnerets with different orifice diameters must be replaced. This operation necessitates completely cutting off the filaments in production, leading to a disruption in production continuity. More critically, replacing the spinneret requires a complex process restart procedure: first, the new filaments must be manually combed to eliminate the filament bundle disorder caused by the spinneret interruption; then, the filament traction path must be re-established, sequentially guiding the new filaments into the solidification disc assembly, traction machine, and other subsequent equipment; finally, multiple rounds of process parameter adjustments are needed to ensure that quality indicators such as filament diameter and strength meet standards. This process involves the coordinated adjustment of multiple pieces of equipment, resulting in technical problems such as long debugging cycles, high manpower input, and significantly reduced production efficiency. Summary of the Invention

[0005] To address the aforementioned issues, an extrusion device for producing aramid 1414 fiber is provided, which effectively saves manpower and improves production efficiency through continuous spinnerets.

[0006] To address the problems of existing technologies, this invention provides an extrusion device for producing aramid 1414 fiber, comprising a continuous spinneret installed at the discharge end of a spinning device. The continuous spinneret includes an installation channel installed on the spinning device, with an installation port at the bottom of the installation channel. Multiple snap-fit ​​components are provided on the installation port. Two switching chambers are located on the outer side of the installation channel, each switching chamber having a discharge port on its side. The discharge port is equipped with a sealing device. A rapid discharge device is also installed on the switching chambers. A partition device is installed inside the installation channel to separate the installation channel from the switching chambers. An assembled spinneret is installed on the installation port, consisting of two adjustable assembled plates. The surface of the assembled spinneret has multiple assembled spinneret holes. A limiting push device for pushing the assembled spinneret upward is installed below the installation port. A pressure reducing device is also installed on the side of the installation channel.

[0007] Preferably, the adjusting assembly plate is provided with multiple staggered docking slots, each docking slot is equipped with an assembled spinneret, the assembled spinneret is composed of a fixed connecting block and a rotating connecting block, the fixed connecting block is fixedly connected to the docking slot, the fixed connecting block is rotatably connected to the rotating connecting block, the outer side of the rotating connecting block is provided with multiple transmission teeth, the inner side of the fixed connecting block and the rotating connecting block are provided with assembly slots, the surface of the adjusting assembly plate is provided with a discharge hole, the inside of the discharge hole is provided with a sealing block, a first spring is installed between the sealing block and the discharge hole, the side of the adjusting assembly plate is provided with a limit locking hole, and the adjusting assembly plate is also equipped with a rotation adjustment mechanism for driving the multiple rotating connecting blocks to rotate.

[0008] Preferably, the rotation adjustment mechanism includes a synchronous transmission assembly installed inside the adjustment assembly plate. The input end of the synchronous transmission assembly is equipped with a drive joint, and the output end of the synchronous transmission assembly is equipped with multiple transmission gears, which mesh with the transmission teeth of the rotating connecting block.

[0009] Preferably, the snap-fit ​​assembly includes a sliding mounting shaft mounted on the side of the mounting channel, a movable snap-fit ​​block slidably mounted on the sliding mounting shaft, a snap-fit ​​angle on the side of the movable snap-fit ​​block, and a second spring installed between the movable snap-fit ​​block and the sliding mounting shaft.

[0010] Preferably, the sealing device includes a first bidirectional ball screw slide table installed on the installation channel, and two sliding plates are installed on the movable end of the first bidirectional ball screw slide table, the sliding plates extending toward the discharge port.

[0011] Preferably, the separating device includes a separating docking sleeve that is slidably mounted inside the installation channel, and the separating device also includes a first linear actuator that pushes the separating docking sleeve toward the assembly spinneret.

[0012] Preferably, the limiting push device includes a push frame installed directly below the mounting port, an alignment placement frame slidably mounted on the push frame, a third spring installed between the alignment placement frame and the push frame, and a second linear drive that pushes the push frame to move up and down.

[0013] Preferably, the pressure reducing device includes a drainage rail installed on the side of the installation channel, the drainage rail communicating with the interior of the installation channel, a movable block slidably installed inside the drainage rail, and a third linear actuator installed on the drainage rail to push the movable block to move. The pressure reducing device also includes a pressure sensor installed on the installation channel.

[0014] Preferably, the rapid unloading device includes a pusher bracket slidably installed inside the installation channel. Two push plates are installed on the movable end of the pusher bracket. A fourth linear actuator for pushing the pusher bracket to move is installed on the side of the installation channel. The rapid unloading device also includes two guide rails installed on the installation channel. The guide rails are provided with guide ridges inside. A movable insert plate is slidably installed inside each guide rail. A pusher contact head is installed on the movable insert plate. A fourth spring is installed between the pusher contact head and the movable insert plate. The top of the pusher contact head contacts the guide ridge. The rapid unloading device also includes a second bidirectional ball screw slide table for driving the movable insert plate to move.

[0015] The advantages of this invention compared to the prior art are: 1. This invention, through its modular spinneret design and replacement mechanism, achieves continuous production when changes in production requirements necessitate adjustments to the filament diameter. Traditional solutions require completely severing the existing filaments when replacing spinnerets with different orifice diameters, leading to production interruptions. However, the modular spinneret of this invention consists of two adjustable assembly plates. During replacement, the spinneret orifices of the new assembly can wrap around the outside of the previously ejected filaments, maintaining a connection between the old and new filaments and preventing breakage. The entire replacement process does not interrupt continuous production, effectively reducing production losses due to downtime, improving equipment utilization and production efficiency, and ensuring production stability and high efficiency. 2. This invention significantly simplifies the process restart procedure after replacing the spinneret due to filament diameter adjustment. Traditionally, replacing the spinneret requires manual combing of the new filaments, re-establishing the filament traction path, and multiple rounds of process parameter adjustments, involving coordinated adjustments of multiple devices, resulting in long debugging cycles and high manpower costs. With this device, after replacing the assembled spinneret, the spinning equipment restarts, and the internal spinning solution is ejected from the assembled spinneret holes of the new spinneret. Because the size of the assembled spinneret holes in the new spinneret changes, the diameter of the ejected filaments changes accordingly, while maintaining connection with the original filaments, eliminating the need for complex process restart operations. This effectively saves manpower, significantly shortens the debugging cycle, significantly improves production efficiency, and reduces production costs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an extrusion device for producing aramid 1414 fiber according to the present invention. Figure 1 .

[0017] Figure 2 This is a three-dimensional schematic diagram of an extrusion device for producing aramid 1414 fiber according to the present invention. Figure 2 .

[0018] Figure 3 This is a three-dimensional schematic diagram of an extrusion device for producing aramid 1414 fiber according to the present invention. Figure 3 .

[0019] Figure 4 This is a front view of an extrusion apparatus for producing aramid 1414 fiber according to the present invention.

[0020] Figure 5 yes Figure 4 Planar sectional view at section AA.

[0021] Figure 6 This is a side view of an extrusion apparatus for producing aramid 1414 fiber according to the present invention.

[0022] Figure 7 yes Figure 6 Planar sectional view at section BB.

[0023] Figure 8 yes Figure 6 Planar sectional view at section CC.

[0024] Figure 9 yes Figure 7 A magnified view of a section at point D.

[0025] Figure 10 yes Figure 7 A magnified view of a section at point E in the middle.

[0026] Figure 11 This is a three-dimensional schematic diagram of the assembled spinneret in an extrusion device for producing aramid 1414 fiber according to the present invention. Figure 1 .

[0027] Figure 12 This is a three-dimensional schematic diagram of the assembled spinneret in an extrusion device for producing aramid 1414 fiber according to the present invention. Figure 2 .

[0028] Figure 13 This is a side view of the assembled spinneret in an extrusion device for producing aramid 1414 fiber according to the present invention.

[0029] Figure 14 yes Figure 13Planar sectional view at section FF.

[0030] Figure 15 This is a three-dimensional schematic diagram of the assembled spinneret core in an extrusion device for producing aramid 1414 fiber according to the present invention.

[0031] The numbers on the map are: 1. Spinning equipment; 2. Assembled spinneret; 21. Adjustable assembly plate; 211. Limiting hole; 212. Assembled spinneret core; 2121. Fixed connecting block; 2122. Rotating connecting block; 2123. Transmission gear; 2124. Assembly groove; 213. Discharge hole; 2131. Sealing block; 215. Rotation adjustment mechanism; 2151. Drive joint; 2152. Synchronous transmission assembly; 2153. Transmission gear; 22. Assembled spinneret hole; 3. Installation channel; 31. Installation port; 32. Snap-fit ​​assembly; 321. Sliding mounting shaft; 322. Movable locking block; 323. Second spring; 33. Switching chamber; 331. Unloading port; 34. Sealing device; 341. Sliding insert plate; 342. First bidirectional ball screw slide; 4. Separating device; 41. Separating docking sleeve; 42. First linear actuator; 5. Limiting push device; 51. Pushing frame; 511. Alignment placement frame; 512. Third spring; 52. Second linear actuator; 6. Pressure reducing device; 61. Drainage track; 62. Movable block; 63. Third linear actuator; 64. Pressure sensor; 7. Quick unloading device; 71. Pushing bracket; 711. Push plate; 72. Fourth linear actuator; 731. Guide slide rail; 7311. Guide protrusion; 732. Movable insert plate; 7321. Pushing contact head; 7322. Fourth spring; 733. Second bidirectional ball screw slide. Detailed Implementation

[0032] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0033] See Figures 1 to 15As shown, an extrusion device for producing aramid 1414 fiber includes a continuous spinneret installed at the discharge end of a spinning device 1. The continuous spinneret includes an installation channel 3 installed on the spinning device 1. The bottom of the installation channel 3 is provided with an installation port 31. The installation port 31 is provided with multiple snap-fit ​​components 32. Two switching chambers 33 are provided on the outside of the installation channel 3. Each switching chamber 33 is provided with a discharge port 331 on its side. The discharge port 331 is provided with a sealing device 34. A rapid discharge device 7 is also installed on the switching chamber 33. A partition device 4 is installed inside the installation channel 3 to separate the installation channel 3 and the switching chambers 33. An assembled spinneret 2 is installed on the installation port 31. The assembled spinneret 2 is composed of two adjusting assembled plates 21. The surface of the assembled spinneret 2 is provided with multiple assembled spinneret holes 22. A limiting push device 5 for pushing the assembled spinneret 2 upward is installed below the installation port 31. A pressure reducing device 6 is also installed on the side of the installation channel 3.

[0034] The spinning equipment 1 guides the spinning solution into the installation channel 3. The installation channel 3, in conjunction with the separating device 4, guides the spinning solution to flow directionally towards the assembled spinneret 2. As the spinning solution accumulates in the installation channel 3, it generates pressure, causing the spinning solution to be ejected from multiple assembled spinneret holes 22 on the surface of the assembled spinneret 2, forming filaments. During this process, the separating device 4 is in close contact with the assembled spinneret 2, effectively preventing the spinning solution from flowing into the two switching chambers 33, ensuring the stability and continuity of the spinning process.

[0035] When production needs change and the filament diameter needs to be adjusted, the assembled spinneret 2 needs to be replaced. To ensure the safety and accuracy of the replacement process, the spinning equipment 1 is first stopped from spinning. The pushing end of the limiting push device 5 is lowered below the installation port 31 to provide operating space for the subsequent installation of the assembled spinneret 2.

[0036] Workers assemble two adjusting assembly plates 21 between the limiting push device 5 and the mounting port 31. After the two adjusting assembly plates 21 are assembled, multiple assembled spinneret holes 22 are formed. The assembled spinneret holes 22 can wrap around the outside of the originally ejected filaments, thereby preventing the filaments from breaking and ensuring the continuity of production. At this time, the new assembled spinneret 2 is located below the old assembled spinneret 2 that is to be replaced.

[0037] The limiting and pushing device 5 pushes the newly assembled spinneret 2 upward. During the upward movement of the new spinneret 2, it will compress the old spinneret 2 inside the installation channel 3. When the old spinneret 2 moves upward, the pressure of the spinning solution inside the installation channel 3 increases.

[0038] To prevent excessive pressure in the spinning solution, pressure reducing device 6 is activated to lower the pressure of the spinning solution inside installation channel 3. Simultaneously, the separating device 4 retracts and moves in sync with the old assembled spinneret 2 to ensure a smooth replacement process.

[0039] As the old assembled spinneret 2 moves upward, the locking assembly 32 automatically releases its lock. The new assembled spinneret 2 continues to rise until it reaches the position of the locking assembly 32, which then locks and engages the new assembled spinneret 2, ensuring its stability in the working position. At this point, the old assembled spinneret 2 reaches the position of the switching chamber 33. The rapid unloading device 7 is activated, causing the two adjusting assembly plates 21 of the old assembled spinneret 2 to separate from each other, allowing each adjusting assembly plate 21 to move into its corresponding switching chamber 33.

[0040] The separator 4 is reset and comes into close contact with the newly assembled spinneret 2, preventing the internal spinning solution from flowing into the switching chamber 33. Subsequently, the sealing device 34 is opened, and the rapid unloading device 7 pushes the adjusting assembly plate 21 remaining in the switching chamber 33 out of the unloading port 331, completing the replacement of the old assembly spinneret 2.

[0041] After the spinneret 2 is replaced, the spinning equipment 1 restarts. The internal spinning solution is squeezed again and ejected from the spinneret orifice 22 of the new spinneret 2. Because the size of the spinneret orifice 22 of the new spinneret 2 is different from that of the old one, the diameter of the ejected filament changes, and it remains connected to the original filament. This eliminates the need for a complex process restart procedure, effectively saving manpower and improving work efficiency.

[0042] See Figures 11 to 15 As shown, the adjusting assembly plate 21 is provided with multiple staggered docking slots, and each docking slot is equipped with an assembly spinneret 212. The assembly spinneret 212 is composed of a fixed connecting block 2121 and a rotating connecting block 2122. The fixed connecting block 2121 is fixedly connected to the docking slot, and the fixed connecting block 2121 is rotatably connected to the rotating connecting block 2122. The outer side of the rotating connecting block 2122 is provided with multiple transmission teeth 2123. The inner sides of the fixed connecting block 2121 and the rotating connecting block 2122 are provided with assembly slots 2124. The surface of the adjusting assembly plate 21 is provided with a discharge hole 213. The discharge hole 213 is provided with a sealing block 2131 inside. A first spring is installed between the sealing block 2131 and the discharge hole 213. The side of the adjusting assembly plate 21 is provided with a limiting hole 211. The adjusting assembly plate 21 is also equipped with a rotation adjustment mechanism 215 that drives the multiple rotating connecting blocks 2122 to rotate.

[0043] When the spinneret plate 2 needs to be replaced to adjust the filament diameter, the two adjusting assembly plates 21 are assembled and connected to each other. Since the adjusting assembly plate 21 has multiple staggered docking slots, during the assembly process, the docking slots at corresponding positions of the two adjusting assembly plates 21 are connected to each other, so that the assembled spinneret cores 212 installed in the docking slots are connected to each other.

[0044] The assembled spinneret 212 consists of a fixed connecting block 2121 and a rotating connecting block 2122. The fixed connecting block 2121 is fixedly connected to the docking groove, and the fixed connecting blocks 2121 of the two adjusting assembly plates 21 are docked with each other. The rotating connecting block 2122 is rotatably connected to the fixed connecting block 2121, and the rotating connecting blocks 2122 of the two adjusting assembly plates 21 are also docked with each other. After the assembled spinneret 212 is docked, the assembly grooves 2124 provided on the inner sides of both the fixed connecting block 2121 and the rotating connecting block 2122 combine with each other to form an assembled spinneret hole 22. This assembled spinneret hole 22 is used for the extrusion of the spinning solution to form filaments.

[0045] Workers adjust the rotation adjustment mechanism 215 installed on the assembly plate 21 to drive multiple rotating connecting blocks 2122 to rotate. Because the outer side of the rotating connecting block 2122 is provided with multiple transmission teeth 2123, the rotation adjustment mechanism 215 can drive the rotating connecting block 2122 to rotate through meshing with the transmission teeth 2123.

[0046] When the rotating connecting block 2122 rotates, the assembly seams of the fixed connecting block 2121 and the rotating connecting block 2122 are staggered. The staggered assembly seam structure can effectively avoid defects on the surface of the filament due to the presence of the assembly seam during the spinning process, thereby ensuring a smooth surface of the extruded filament and improving the quality of the filament.

[0047] The surface of the adjusting assembly plate 21 is provided with a discharge hole 213, and a sealing block 2131 is provided inside the discharge hole 213. A first spring is installed between the sealing block 2131 and the discharge hole 213. During normal spinning, the first spring pushes the sealing block 2131, keeping the sealing block 2131 in the designated position of the discharge hole 213, blocking the discharge hole 213, preventing the spinning solution from entering the discharge hole 213, and ensuring the stability of the spinning process and the quality of the filament.

[0048] When it is necessary to replace the assembled spinneret 2, the rapid unloading device 7 is activated. At this time, the unloading hole 213 can cooperate with the rapid unloading device 7 to perform the separation operation. The rapid unloading device 7 applies a force to the adjusting assembled plate 21, causing the two adjusting assembled plates 21 to separate from each other. During this process, the unloading hole 213 provides the point of application for the rapid unloading device 7, ensuring that the separation operation can be carried out smoothly.

[0049] The side of the assembly plate 21 is provided with a limiting hole 211. During the replacement of the assembly spinneret 2, when the new assembly spinneret 2 moves to the designated position in the installation channel 3, the snap-fit ​​component 32 provided on the installation port 31 of the installation channel 3 will cooperate with the limiting hole 211 to limit and snap the new assembly spinneret 2, ensuring that the new assembly spinneret 2 is in the working position.

[0050] See Figures 11 to 15 As shown, the rotation adjustment mechanism 215 includes a synchronous transmission assembly 2152 installed inside the adjustment assembly plate 21. The input end of the synchronous transmission assembly 2152 is equipped with a drive connector 2151, and the output end of the synchronous transmission assembly 2152 is equipped with multiple transmission gears 2153. The transmission gears 2153 mesh with the transmission teeth 2123 of the rotating connecting block 2122.

[0051] Synchronous drive assembly 2152 is used to synchronously transmit input rotation to multiple output terminals. Synchronous drive assembly 2152 is prior art and will not be described in detail here.

[0052] The operator rotates the drive connector 2151 located on the outside of the adjustment assembly plate 21. Since the drive connector 2151 is connected to the input end of the synchronous transmission component 2152, its rotation will drive the synchronous transmission component 2152 to start operating. The synchronous transmission component 2152, with its own synchronous transmission characteristics, transmits the rotational power input by the drive connector 2151 evenly and synchronously to each output end.

[0053] Driven by the synchronous transmission assembly 2152, multiple transmission gears 2153 installed at the output end rotate synchronously. Because the transmission gears 2153 mesh with the transmission teeth 2123 of the rotating connecting block 2122, according to the gear meshing transmission principle, the rotation of the transmission gears 2153 will drive the rotating connecting block 2122 to rotate.

[0054] See Figures 1 to 10 As shown, the snap-fit ​​assembly 32 includes a sliding mounting shaft 321 installed on the side of the mounting channel 3. A movable snap-fit ​​block 322 is slidably mounted on the sliding mounting shaft 321. The side of the movable snap-fit ​​block 322 is provided with a snap-fit ​​angle. A second spring 323 is installed between the movable snap-fit ​​block 322 and the sliding mounting shaft 321.

[0055] When the limiting and pushing device 5 pushes the newly assembled spinneret 2 upward, the new spinneret 2 will exert a squeezing effect on the old spinneret 2 inside the installation channel 3 during its ascent, causing the old spinneret 2 to move upward. During the ascent of the old spinneret 2, the edge of the old spinneret 2 will contact the snap-fit ​​angle on the side of the movable locking block 322 and apply pressure. Since the snap-fit ​​angle has an inclination angle, this pressure can be decomposed into a component force along the sliding mounting shaft 321. Under the action of this component force, the movable locking block 322 will retract and move along the sliding mounting shaft 321. At this time, the second spring 323 is compressed, storing elastic potential energy, and at the same time, the movable locking block 322 disengages from the limiting position on the old spinneret 2, allowing the old spinneret 2 to move upward smoothly.

[0056] As the newly assembled spinneret 2 continues to rise, when the limiting hole 211 on the side of the newly assembled spinneret 2 moves to the position of the movable block 322, the previously compressed second spring 323 releases its stored elastic potential energy, pushing the movable block 322 to reset and move. The movable block 322 will accurately enter the limiting hole 211 of the newly assembled spinneret 2, achieving automatic docking. Through this automatic docking method, the position of the newly assembled spinneret 2 is restricted.

[0057] See Figure 1 and Figure 2 As shown, the sealing device 34 includes a first bidirectional ball screw slide 342 installed on the installation channel 3. Two sliding plates 341 are installed on the movable end of the first bidirectional ball screw slide 342, and the sliding plates 341 extend toward the discharge port 331.

[0058] The sealing device 34 mainly consists of a first bidirectional ball screw slide 342 installed on the installation channel 3 and two sliding plates 341 installed on the movable end of the first bidirectional ball screw slide 342. The first bidirectional ball screw slide 342 serves as a power transmission and motion conversion component, enabling the two movable ends to move towards or away from each other through bidirectional drive; the two sliding plates 341 serve as actuating components, extending towards the discharge port 331 to directly block the discharge port 331.

[0059] See Figures 4 to 7 As shown, the separating device 4 includes a separating docking sleeve 41 that is slidably installed inside the installation channel 3, and the separating device 4 also includes a first linear actuator 42 that pushes the separating docking sleeve 41 toward the assembled spinneret 2.

[0060] The separating docking sleeve 41 can be tightly docked with the assembled spinneret 2 to form an effective sealed isolation switching chamber 33, preventing the spinning solution inside the installation channel 3 from entering the switching chamber 33. The first linear actuator 42 can precisely control the moving distance and speed of the separating docking sleeve 41.

[0061] See Figures 1 to 10 As shown, the limiting push device 5 includes a push frame 51 installed directly below the mounting port 31, an alignment placement frame 511 slidably mounted on the push frame 51, a third spring 512 installed between the alignment placement frame 511 and the push frame 51, and a second linear drive 52 that pushes the push frame 51 to move up and down.

[0062] When a new spinneret 2 needs to be replaced, the second linear actuator 52 is activated, generating a downward linear driving force that causes the push frame 51 and the alignment frame 511 to descend as a whole. As the push frame 51 and the alignment frame 511 descend, they gradually detach from the old spinneret 2 installed at the mounting port 31 of the installation channel 3, leaving sufficient operating space for the subsequent installation of the new spinneret 2. During the descent of the alignment frame 511, since one end of the third spring 512 is fixed to the push frame 51 and the other end is connected to the alignment frame 511, and the alignment frame 511 is subjected to a downward force, the third spring 512 is compressed, generating elastic potential energy. When the push frame 51 and the alignment frame 511 descend to the appropriate position, the second linear actuator 52 stops working. At this time, the alignment frame 511 is pushed upward under the action of the elastic potential energy of the third spring 512, returning to its initial higher position.

[0063] When installing the new spinneret 2, the operator first presses down the alignment bracket 511, causing it to move downwards against the force of the third spring 512, creating space for the new spinneret 2. Then, the new spinneret 2, composed of two adjusting brackets 21, is placed below the old spinneret 2, ensuring accurate assembly of the two brackets to form multiple spinneret holes 22. These holes 22 should cover the outside of the previously ejected filaments to ensure production continuity. After the new spinneret 2 is assembled, the alignment bracket 511 is released. Under the pressure of the third spring 512, the alignment bracket 511 automatically rises and fits onto the outside of the new spinneret 2. This fitting method limits the horizontal position of the new spinneret 2, restricting its installation and ensuring that it does not shift during ascent, thus guaranteeing installation accuracy.

[0064] After the new spinneret 2 is positioned, the second linear actuator 52 restarts, generating an upward linear driving force that lifts the push frame 51. During this ascent, the top of the push frame 51 contacts the bottom of the new spinneret 2, applying an upward pushing force to it and propelling the new spinneret 2, now in its limit position, towards the old spinneret 2 in the mounting port 31. As the new spinneret 2 continues to rise, it gradually squeezes the old spinneret 2 inside the mounting channel 3, initiating the subsequent spinneret 2 replacement process, ultimately achieving accurate installation of the new spinneret 2 and successful replacement of the old spinneret 2.

[0065] See Figures 1 to 7 As shown, the pressure reducing device 6 includes a drainage rail 61 installed on the side of the installation channel 3. The drainage rail 61 is connected to the interior of the installation channel 3. A movable block 62 is slidably installed inside the drainage rail 61. A third linear actuator 63 is installed on the drainage rail 61 to push the movable block 62 to move. The pressure reducing device 6 also includes a pressure sensor 64 installed on the installation channel 3.

[0066] When the spinning equipment 1 is operating normally and the spinneret 2 is not being replaced, the spinning solution in the installation channel 3, guided by the spinning equipment 1, flows directionally towards the spinneret 2 through the synergistic action of the installation channel 3 and the separator 4, and is ejected from multiple spinneret holes 22 on the surface of the spinneret 2 to form a stable filament. At this time, the pressure of the spinning solution in the installation channel 3 is within a relatively stable range, and the pressure sensor 64 continuously monitors the pressure value and feeds it back to the equipment's control system. Since the pressure does not exceed the set threshold, the third linear actuator 63 does not operate, the movable block 62 remains in its initial position, the fluid exchange between the guide rail 61 and the installation channel 3 is in a dynamic equilibrium state, and the pressure reducing device 6 does not activate its pressure reducing function.

[0067] When production demands change and the spinneret 2 needs to be replaced to adjust the filament diameter, the limiting and pushing device 5 pushes the newly assembled spinneret 2 upwards, squeezing the old spinneret 2 inside the installation channel 3. As the old spinneret 2 moves upwards, the space inside the installation channel 3 is compressed, causing the spinning solution to be squeezed and the pressure to rise rapidly.

[0068] Pressure sensor 64 monitors the pressure change of the spinning solution in the installation channel 3 in real time. When the detected pressure value exceeds a preset safety threshold, the third linear actuator 63 is activated. The third linear actuator 63 pushes the movable block 62 to move within the drainage track 61. The movement of the movable block 62 changes the communication volume between the drainage track 61 and the installation channel 3, allowing the pressurized spinning solution in the installation channel 3 to flow into the drainage track 61. As the spinning solution enters the drainage track 61, the pressure decreases accordingly.

[0069] After the old spinneret 2 is replaced and the new spinneret 2 reaches its working position and is locked in place by the locking assembly 32, the spinning solution pressure in the installation channel 3 gradually stabilizes. Once the pressure sensor 64 detects that the pressure has returned to the normal operating range, it sends a signal back to the control system. The control system then controls the third linear actuator 63 to reverse its movement, causing the movable block 62 to return to its initial position, closing the fluid passage between the drainage track 61 and the installation channel 3, and stopping the pressure reducing device 6 from operating.

[0070] See Figures 1 to 8 As shown, the rapid unloading device 7 includes a pusher bracket 71 slidably installed inside the installation channel 3. Two push plates 711 are installed on the movable end of the pusher bracket 71. A fourth linear actuator 72 for pushing the pusher bracket 71 to move is installed on the side of the installation channel 3. The rapid unloading device 7 also includes two guide rails 731 installed on the installation channel 3. The guide rails 731 are provided with guide protrusions 7311 inside. A movable insert plate 732 is slidably installed inside each guide rail 731. A pusher contact 7321 is installed on the movable insert plate 732. A fourth spring 7322 is installed between the pusher contact 7321 and the movable insert plate 732. The top of the pusher contact 7321 contacts the guide protrusion 7311. The rapid unloading device 7 also includes a second bidirectional ball screw slide 733 for driving the movable insert plate 732 to move.

[0071] Before replacing the old assembled spinneret 2, the fourth linear actuator 72 is activated, pushing the pusher bracket 71 outward within the installation channel 3. During the movement of the pusher bracket 71, the two push plates 711 move synchronously until they accurately reach the designated positions in the switching chamber 33. This ensures that subsequent push plates 711 can smoothly push the adjusting assembled plate 21, which is currently positioned in the switching chamber 33.

[0072] When the old assembled spinneret 2 moves to the position of the switching chamber 33 during the upward process, the second bidirectional ball screw slide 733 is activated, driving the two movable insert plates 732 to move horizontally along the corresponding guide rails 731. During the horizontal movement of the movable insert plates 732, the pushing contact head 7321 installed on the movable insert plate 732 contacts the guide protrusion 7311 inside the guide rail 731. When the pushing contact head 7321 contacts the guide protrusion 7311, under the action of the guide protrusion 7311, the pushing contact head 7321 is subjected to downward pressure, thereby overcoming the elastic force of the fourth spring 7322 and moving downward, and inserting into the unloading hole 213 of the adjusting assembly plate 21.

[0073] Subsequently, the movable insert plate 732 continues to move horizontally under the drive of the second bidirectional ball screw slide 733, and the pushing contact head 7321 moves horizontally synchronously with the movable insert plate 732. Since the pushing contact head 7321 has been inserted into the stripping hole 213, the horizontal movement will apply a pushing force to both sides to the two adjusting assembly plates 21, causing the two adjusting assembly plates 21 to enter the corresponding switching chambers 33 respectively, realizing the separation of the old assembled spinneret 2. When the adjusting assembly plate 21 moves to the designated position, the pushing contact head 7321 will disengage from the guide protrusion 7311. At this time, the elastic force of the fourth spring 7322 will push the pushing contact head 7321 upward and disengage from the stripping hole 213.

[0074] After the two adjusting assembly plates 21 enter the switching chamber 33, the separating device 4 resets and comes into close contact with the newly assembled spinneret 2. The separating device 4 effectively prevents the spinning solution inside the installation channel 3 from flowing into the switching chamber 33, thus separating the switching chamber 33 from the installation channel 3 and forming an independent space, creating a stable environment for the subsequent removal of the adjusting assembly plates 21.

[0075] After the switching chamber 33 is separated, the sealing device 34 opens the unloading port 331, connecting the switching chamber 33 to the outside. At this time, the fourth linear actuator 72 is activated again, pushing the pusher bracket 71 to extend into the switching chamber 33. During the movement of the pusher bracket 71, it drives the two push plates 711 to move synchronously. The push plates 711 contact the adjusting assembly plate 21 that is stationary in the switching chamber 33 and apply a pushing force to the adjusting assembly plate 21. Under the action of the pushing force, the adjusting assembly plate 21 exits from the unloading port 331 of the switching chamber 33, finally completing the automatic unloading process of the old assembled spinneret 2.

[0076] Specific working principle: The spinning equipment 1 guides the spinning solution into the installation channel 3. The installation channel 3, in conjunction with the separating device 4, guides the spinning solution to flow directionally towards the assembled spinneret 2. As the spinning solution accumulates in the installation channel 3, it generates pressure, causing the spinning solution to be ejected from multiple assembled spinneret holes 22 on the surface of the assembled spinneret 2, forming filaments. During this process, the separating device 4 is in close contact with the assembled spinneret 2, effectively preventing the spinning solution from flowing into the two switching chambers 33, ensuring the stability and continuity of the spinning process.

[0077] When production needs change and the filament diameter needs to be adjusted, the assembled spinneret 2 needs to be replaced. To ensure the safety and accuracy of the replacement process, the spinning equipment 1 is first stopped from spinning. The pushing end of the limiting push device 5 is lowered below the installation port 31 to provide operating space for the subsequent installation of the assembled spinneret 2.

[0078] Workers assemble two adjusting assembly plates 21 between the limiting push device 5 and the mounting port 31. After the two adjusting assembly plates 21 are assembled, multiple assembled spinneret holes 22 are formed. The assembled spinneret holes 22 can wrap around the outside of the originally ejected filaments, thereby preventing the filaments from breaking and ensuring the continuity of production. At this time, the new assembled spinneret 2 is located below the old assembled spinneret 2 that is to be replaced.

[0079] The limiting and pushing device 5 pushes the newly assembled spinneret 2 upward. During the upward movement of the new spinneret 2, it will compress the old spinneret 2 inside the installation channel 3. When the old spinneret 2 moves upward, the pressure of the spinning solution inside the installation channel 3 increases.

[0080] To prevent excessive pressure in the spinning solution, pressure reducing device 6 is activated to lower the pressure of the spinning solution inside installation channel 3. Simultaneously, the separating device 4 retracts and moves in sync with the old assembled spinneret 2 to ensure a smooth replacement process.

[0081] As the old assembled spinneret 2 moves upward, the locking assembly 32 automatically releases its lock. The new assembled spinneret 2 continues to rise until it reaches the position of the locking assembly 32, which then locks and engages the new assembled spinneret 2, ensuring its stability in the working position. At this point, the old assembled spinneret 2 reaches the position of the switching chamber 33. The rapid unloading device 7 is activated, causing the two adjusting assembly plates 21 of the old assembled spinneret 2 to separate from each other, allowing each adjusting assembly plate 21 to move into its corresponding switching chamber 33.

[0082] The separator 4 is reset and comes into close contact with the newly assembled spinneret 2, preventing the internal spinning solution from flowing into the switching chamber 33. Subsequently, the sealing device 34 is opened, and the rapid unloading device 7 pushes the adjusting assembly plate 21 remaining in the switching chamber 33 out of the unloading port 331, completing the replacement of the old assembly spinneret 2.

[0083] After the spinneret 2 is replaced, the spinning equipment 1 restarts. The internal spinning solution is squeezed again and ejected from the spinneret orifice 22 of the new spinneret 2. Because the size of the spinneret orifice 22 of the new spinneret 2 is different from that of the old one, the diameter of the ejected filament changes, and it remains connected to the original filament. This eliminates the need for a complex process restart procedure, effectively saving manpower and improving work efficiency.

[0084] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An extrusion device for producing aramid 1414 fiber, comprising a continuous spinneret installed at the discharge end of a spinning device (1), characterized in that, The continuous spinneret includes an installation channel (3) installed on the spinning equipment (1). The bottom of the installation channel (3) is provided with an installation port (31). Multiple snap-fit ​​components (32) are provided on the installation port (31). Two switching chambers (33) are provided on the outside of the installation channel (3). Each switching chamber (33) is provided with a discharge port (331) on its side. The discharge port (331) is provided with a sealing device (34). A fast discharge device (7) is also installed on the switching chamber (33). The inner side of the installation channel (3) The part is equipped with a partition device (4), which is used to separate the installation channel (3) and the switching chamber (33). The installation port (31) is equipped with a spinneret plate (2). The spinneret plate (2) is composed of two adjustable assembly plates (21). The surface of the spinneret plate (2) is provided with multiple spinneret holes (22). A limit push device (5) for pushing the spinneret plate (2) to rise is installed below the installation port (31). A pressure reducing device (6) is also installed on the side of the installation channel (3).

2. The extrusion equipment for producing aramid 1414 fiber according to claim 1, characterized in that, The adjusting assembly plate (21) is provided with multiple staggered docking slots, and each docking slot is equipped with an assembly spinneret (212). The assembly spinneret (212) consists of a fixed connecting block (2121) and a rotating connecting block (2122). The fixed connecting block (2121) is fixedly connected to the docking slot, and the fixed connecting block (2121) is rotatably connected to the rotating connecting block (2122). The outer side of the rotating connecting block (2122) is provided with multiple transmission teeth (2123). The fixed connecting block (2121) and The inner side of the rotating connecting block (2122) is provided with an assembly groove (2124). The surface of the adjusting assembly plate (21) is provided with a material release hole (213). The inside of the material release hole (213) is provided with a sealing block (2131). A first spring is installed between the sealing block (2131) and the material release hole (213). The side of the adjusting assembly plate (21) is provided with a limit card hole (211). The adjusting assembly plate (21) is also provided with a rotation adjustment mechanism (215) that drives multiple rotating connecting blocks (2122) to rotate.

3. The extrusion equipment for producing aramid 1414 fiber according to claim 2, characterized in that, The rotation adjustment mechanism (215) includes a synchronous transmission assembly (2152) installed inside the adjustment assembly plate (21). The input end of the synchronous transmission assembly (2152) is equipped with a drive connector (2151), and the output end of the synchronous transmission assembly (2152) is equipped with multiple transmission gears (2153). The transmission gears (2153) mesh with the transmission teeth (2123) of the rotating connecting block (2122).

4. The extrusion equipment for producing aramid 1414 fiber according to claim 1, characterized in that, The snap-fit ​​assembly (32) includes a sliding mounting shaft (321) installed on the side of the mounting channel (3), a movable snap-fit ​​block (322) is slidably mounted on the sliding mounting shaft (321), the side of the movable snap-fit ​​block (322) is provided with a snap-fit ​​angle, and a second spring (323) is installed between the movable snap-fit ​​block (322) and the sliding mounting shaft (321).

5. The extrusion equipment for producing aramid 1414 fiber according to claim 1, characterized in that, The sealing device (34) includes a first bidirectional ball screw slide (342) installed on the installation channel (3), and two sliding plates (341) are installed on the movable end of the first bidirectional ball screw slide (342), which extend toward the discharge port (331).

6. The extrusion equipment for producing aramid 1414 fiber according to claim 1, characterized in that, The separation device (4) includes a separation docking sleeve (41) that is slidably installed inside the installation channel (3), and the separation device (4) also includes a first linear actuator (42) that pushes the separation docking sleeve (41) toward the assembly spinneret (2).

7. The extrusion equipment for producing aramid 1414 fiber according to claim 1, characterized in that, The limiting push device (5) includes a push frame (51) installed directly below the mounting port (31), an alignment placement frame (511) is slidably installed on the push frame (51), a third spring (512) is installed between the alignment placement frame (511) and the push frame (51), and the limiting push device (5) also includes a second linear drive (52) that pushes the push frame (51) to move up and down.

8. An extrusion apparatus for producing aramid 1414 fiber according to claim 1, characterized in that, The pressure reducing device (6) includes a drainage rail (61) installed on the side of the installation channel (3), the drainage rail (61) is connected to the interior of the installation channel (3), a movable block (62) is slidably installed inside the drainage rail (61), a third linear actuator (63) is installed on the drainage rail (61) to push the movable block (62) to move, and the pressure reducing device (6) also includes a pressure sensor (64) installed on the installation channel (3).

9. An extrusion apparatus for producing aramid 1414 fiber according to claim 1, characterized in that, The rapid unloading device (7) includes a pusher bracket (71) slidably installed inside the installation channel (3). Two push plates (711) are installed on the movable end of the pusher bracket (71). A fourth linear actuator (72) that pushes the pusher bracket (71) to move is installed on the side of the installation channel (3). The rapid unloading device (7) also includes two guide rails (731) installed on the installation channel (3). The guide rails (731) are provided with guide protrusions (7311) inside. A movable insert plate (732) is slidably installed inside each guide rail (731). A pusher contact (7321) is installed on the movable insert plate (732). A fourth spring (7322) is installed between the pusher contact (7321) and the movable insert plate (732). The top of the pusher contact (7321) contacts the guide protrusion (7311). The rapid unloading device (7) also includes a second bidirectional ball screw slide (733) that drives the movable insert plate (732) to move.

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