A polymer melt extrusion device with intelligent temperature control function

Abstract

This invention discloses a polymer melt extrusion device with intelligent temperature control, relating to the field of chemical fiber production equipment technology. It includes a mounting frame, an extrusion unit, a detection unit, a spinneret unit, and a bellows. The mounting frame is used to mount and fix the extrusion unit, which is used for melting the material. The detection unit is used to remove bubbles from the melt. The spinneret unit is used for spinning and post-heating the melt. The bellows is used for cooling and shaping the filaments. During the process of metering and melting the material through the extrusion unit, the detection unit detects and removes bubbles in the melt, improving the overall uniformity of the melt and preventing it from affecting the quality of the filaments. The spinneret unit spins the melt into filaments and then reheats them to eliminate internal stress in the fibers, preventing it from affecting the quality of the filaments. Finally, the bellows cools and shapes the filaments.

Description

Technical Field

[0001] This invention relates to the field of chemical fiber production equipment technology, specifically a polymer melt extrusion device with intelligent temperature control function. Background Technology

[0002] In modern industrial production, especially in textiles and plastics processing, polymer melt extrusion is a key technology. By heating polymer raw materials to a molten state and extruding them into specific shapes (such as fibers, pipes, and sheets), a crucial transformation step from raw materials to final products is achieved. For example, in polyester fiber production, the quality of melt extrusion directly determines key properties such as fiber strength, fineness, and uniformity, which in turn affect the quality and applications of textiles.

[0003] The presence of bubbles in polymer melts is a common and serious problem. The sources of bubbles are varied, including air entrained in the raw materials, volatile gases generated during polymer heating, and air entrapped during processing. These bubbles remain in the product after melt extrusion, negatively impacting the physical and mechanical properties of the product. Taking plastic pipe production as an example, air bubbles reduce the density of the pipe, decreasing its strength and pressure resistance, and making it prone to breakage and other safety hazards during use. In fiber production, air bubbles can cause problems such as voids and discontinuities in the fibers, reducing their strength and uniformity and affecting the quality of textiles. Due to factors such as uneven mixing of heating temperatures or different heat conduction rates of the melt during the heating process, uneven temperature distribution occurs, and localized overheating areas generate more air bubbles. Intelligent temperature control based on the state and temperature of the melt in each area is needed to minimize air bubble formation. Therefore, air bubble removal cannot be completely achieved by temperature control alone. Existing vacuum degassing and degassing methods require additional vacuum equipment and complex sealing structures, increasing equipment costs and maintenance difficulties. Moreover, the degassing effect is limited for high-viscosity polymer melts. Therefore, a method that combines intelligent temperature control and a degassing mechanism to remove air bubbles is currently needed. Summary of the Invention

[0004] The purpose of this invention is to provide a polymer melt extrusion device with intelligent temperature control function to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The polymer melt extrusion device with intelligent temperature control includes a mounting frame, an extrusion unit, a detection unit, a spinneret unit, and a bellows. The mounting frame is placed on a horizontal foundation. The extrusion unit is fixedly installed on the end of the mounting frame away from the horizontal foundation. The detection unit is fixedly connected to the extrusion unit and has the function of detecting and removing bubbles in the melt. The spinneret unit is fixedly connected to the extrusion unit. The bellows is fixedly installed on the end of the spinneret unit near the horizontal foundation. A semiconductor cooling plate is installed inside the bellows.

[0007] The mounting frame is used to install and fix the extrusion unit. The extrusion unit is used for melting the material. The detection unit is used for removing bubbles from the melt. The spinneret unit is used for spinning the melt and post-heating. The bellows is used for cooling and shaping the filaments. When the material passes through the extrusion unit for metering and melting into a filament, the detection unit detects and removes bubbles in the melt to improve the overall uniformity of the melt and avoid affecting the quality of the filaments. The spinneret unit is used to spin the melt into filaments and then reheat it to eliminate internal stress in the fibers and avoid affecting the quality of the filaments. Finally, the bellows is used for cooling and shaping.

[0008] Furthermore, the extrusion unit includes a motor, a feed hopper, a barrel, a screw, and a conical cap. The motor is fixedly mounted at the barrel end cap, and the motor output end is fixedly connected to the screw. The barrel is fixedly mounted on the end of the mounting frame away from the horizontal foundation. A feed hopper is located at the end of the barrel away from the mounting frame. A heater is located in the inner wall of the barrel. A conical cap is located at the end of the barrel away from the motor, and a discharge port is located at the end of the conical cap. The conical cap is fixedly connected to the spinneret unit. A temperature sensor is located in the inner wall of the barrel. The screw is installed inside the barrel, and its length is 2 / 3 of the barrel length. The screw is fixedly connected to the detection unit. Two rectangular through slots are formed at the end of the screw away from the motor.

[0009] When the material enters the barrel through the feed hopper, the controller starts the motor, which drives the screw to rotate, uniformly stirring the material and pushing it towards the cone cover. At this time, the controller starts the heater to generate high temperature, which, together with the screw, melts the material into a uniform melt. When the temperature inside the barrel exceeds or falls below the preset value, the controller adjusts the temperature of the heater to keep the melting temperature of the material within the set range, thereby achieving intelligent temperature control and ensuring product quality. The two rectangular through slots on the screw are designed to facilitate the smooth movement of the moving rod.

[0010] Furthermore, the detection unit includes a rotating drum, a semi-screw plate, a sliding plate, a conductive plate, a slider, a double-headed spring telescopic rod, a support rod, a moving rod, a rotating column, a spring telescopic tube, a moving plate, a cone, an electromagnet, a magnet, a probe, a spiral rod, a magnetic block, a current-carrying coil, an electric telescopic rod, and a memory spring. The rotating drum is fixedly connected to the screw at one end near the motor and is installed inside the material cylinder. The semi-screw plate is mounted on the rotating drum at an angle via a round rod. One end of the sliding plate is fixedly connected to the upper end of the semi-screw plate, and the other end is fixedly connected to the conductive plate. A groove is formed on the rotating drum, and a conductive block is placed at the bottom of the groove. The conductive plate is slidably installed in the groove of the rotating drum. The slider is slidably installed on the inner wall of the rotating drum, and is fixedly connected to the end of the semi-screw plate near the central axis of the rotating drum. One telescopic end of the double-headed spring telescopic rod is fixedly connected to the slider, and the other telescopic end is fixedly connected to the moving rod. The fixed end of the double-headed spring telescopic rod is rotatably connected to the support rod. Both ends of the support rod are fixedly installed on the inner wall of the rotating drum. There are two moving rods, which are connected by a spring. The system comprises a telescopic tube connection, a spring telescopic tube rotatably mounted on a rotating column, both ends of the rotating column fixedly mounted on the inner wall of the rotating cylinder, a movable plate slidably mounted inside the rotating cylinder, a conical cylinder fixedly mounted on the surface of the rotating cylinder away from the motor, and multiple sets of holes formed on the surface of the conical cylinder, an electromagnet fixedly mounted at an angle to the horizontal axis near the central axis of the conical cylinder, a magnet slidably mounted inside the end of the conical cylinder near the inner wall, multiple sets of probes provided on the end of the magnet away from the electromagnet, a loop rod fixedly mounted on the inner wall of the end of the conical cover, a coil of electricity evenly wound on the surface of the loop rod, a magnetic block slidably mounted inside the conical cover, a telescopic end of the electric telescopic rod fixedly connected to the magnetic block, a fixed end of the electric telescopic rod fixedly connected to the inner surface of the conical cover, a memory spring electrically connected to the magnetic block, one end of the memory spring fixedly connected to the magnetic block, and the other end passing through the conical cylinder and fixedly connected to the movable plate, a pressure sensor provided on the surface of the magnetic block near the end of the conical cylinder, the magnetic block slidably mounted on the loop rod, and an electromagnet electrically connected to a conductive block provided at the bottom of the groove in the rotating cylinder.

[0011] When a fixed quantity of melt is fed to the pressure sensor on the magnetic block, if the melt contains air bubbles, the pressure sensor detects that the pressure value is lower than the set value. At this time, the controller activates the electric telescopic rod, pushing the magnetic block to the left to block the melt from flowing out of the discharge port. As the magnetic block moves to the left, the number of effective turns in contact with the energized coil decreases, thereby increasing the current supplied by the energized coil to the memory spring through the magnetic block. This causes the memory spring to contract upon receiving the current, thus moving the moving plate to the right. Simultaneously, the upper moving rod moves to the right, causing the upper double-headed spring telescopic rod to be compressed at both ends and rotate around the support rod. This causes the slider to move the lower part of the semi-screw plate to move to the left. Under the action of the round rod, the upper part of the semi-screw plate rotates to the right, thus reducing the tilt angle of the semi-screw plate. On the other hand, the spring telescopic tube rotates clockwise on the rotating column, causing the lower slider to move to the left, thereby causing the lower semi-screw plate to rotate to the left. Together, they reduce the speed at which the semi-screw plate conveys the melt. This provides more time for subsequent probe stirring, allowing air bubbles in the melt to be fully removed. Simultaneously, the upper part of the upper half-screw plate rotates to the right, and under the transmission action of the sliding plate, it drives the conductive plate to contact the conductive block in the groove, thereby providing current to the electromagnet. This makes the electromagnet and the magnet have the same polarity, and under the repulsion of like poles, they push the magnet to move, thus allowing the probe to extend outside the cone and fully stir the melt containing air bubbles, thereby breaking the air bubbles in the melt and avoiding affecting the spinning quality. When the pressure value of the pressure sensor reaches the preset value, the controller stops supplying current to the electric telescopic rod. Under the pressure of the melt, the magnetic block is pushed to the right and flows out from the discharge port of the cone cover. At this time, the effective number of turns of the energized coil gradually increases, the current supplied to the memory spring gradually decreases, and the memory spring gradually returns to its own length, thereby pushing the moving plate to the left. Under the transmission action of the moving rod, the half-screw plate returns to its initial angle, thereby restoring the melt conveying speed.

[0012] Furthermore, the spinning unit includes a spinning box, a metering pump, a spinneret, and a post-heating zone. The spinning box is fixedly installed at the end of the barrel away from the motor. One end of the metering pump is connected to the outlet pipe at the cone cover of the barrel through a pipe, and the other end of the metering pump is connected to the spinneret through a pipe. The metering pump is installed inside the spinning box. The end of the spinneret near the horizontal foundation is fixedly connected to the post-heating zone. The spinneret is installed inside the spinning box, and the end of the post-heating zone near the horizontal foundation is connected to the air box.

[0013] After the melt enters the metering pump, a fixed amount of melt is delivered to the spinneret. Under the action of the spinneret, the melt is divided into filaments and then passed through the post-heating zone for secondary heating of the filaments. This process breaks down the internal stress of the fibers, thereby improving the quality of the filaments. The post-heated filaments then enter the air box and are cooled and shaped under the action of the semiconductor cooling plate.

[0014] Furthermore, the end of the energized coil closest to the motor is the current input port.

[0015] When the pressure of the quantitative melt is insufficient, the magnetic block moves to the left, reducing the effective number of turns of the energized coil, causing the memory spring to contract. This reduces the angle of the semi-spiral plate under the action of the moving rod, lowers the melt conveying speed, and simultaneously energizes the electromagnet to drive the magnet to move. This causes the probe to extend to the surface of the conical cylinder, uniformly stirring the melt containing air bubbles, thereby removing the air bubbles and improving product quality.

[0016] Furthermore, the length of the rotating drum is less than 1 / 3 of the length of the material drum.

[0017] To facilitate the movement of the movable plate and thus change the stirring angle of the semi-spiral plate, while also allowing the pressure sensor on the magnetic block to detect insufficient pressure, the electric telescopic rod is activated to push the magnetic block to the left to block the melt from being fed, thereby preventing problems with the spinning quality caused by melt containing air bubbles.

[0018] Furthermore, the probe surface is roughened.

[0019] A roughened probe alters the local flow characteristics of the melt during stirring, making the melt flow around the probe more complex and turbulent, forming more eddies and turbulence. These complex flows help break the surface tension of bubbles, making them easier to separate from the melt. At the same time, the roughened probe surface can hinder the movement of bubbles. During stirring, the roughened probe makes it easier for bubbles in the melt to collide. The movement trajectory of bubbles near the probe is more random and variable, increasing the probability of collisions between bubbles. When bubbles collide, they merge into larger bubbles, making it easier for them to float out of the melt and be removed.

[0020] Furthermore, the magnet is placed parallel to the electromagnet.

[0021] In order to ensure that the probe can accurately protrude from the cone to stir the air bubbles in the melt, thereby facilitating the removal of air bubbles and improving production quality, the magnet is placed parallel to the electromagnet to ensure the accuracy of the probe movement.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. In this invention, when the pressure sensor on the magnetic block is lower than a set value, the electric telescopic rod is activated, pushing the magnetic block to the left. This blocks the feed port and reduces the effective number of turns of the energized coil. At this time, the current in the memory spring increases and it contracts, thereby driving the moving plate to push the upper moving rod to the right. This compresses the double-headed spring telescopic rod, causing both ends to rotate around the support rod. This causes the slider to move the lower part of the semi-screw plate to the left. Under the action of the round rod, the upper part of the semi-screw plate rotates to the right, thereby reducing the tilt angle of the semi-screw plate and reducing the speed at which the semi-screw plate conveys the melt. At the same time, the semi-screw plate pushes the conductive plate to contact the conductive block, energizing the electromagnet and driving the magnet to move. This causes the probe to extend outside the cone, thoroughly stirring the melt containing air bubbles. Combined with the reduced conveying angle of the semi-screw plate, the probe has sufficient time to break the air bubbles in the melt, thereby improving the production quality of spinning.

[0024] 2. The present invention uses a roughened probe to change the local flow characteristics of the melt during stirring. The flow of the melt around the probe becomes more complex and turbulent, which makes it easier to break the surface tension of the bubbles and make the bubbles easier to separate from the melt. The probe makes the bubbles in the melt more likely to collide during stirring, increasing the probability of collisions between bubbles. During the collision, larger bubbles are formed, which are easier to float out of the melt and be removed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall appearance structure of a polymer melt extrusion device with intelligent temperature control function according to the present invention.

[0026] Figure 2 This is a top view schematic diagram of a polymer melt extrusion device with intelligent temperature control function according to the present invention;

[0027] Figure 3 This invention relates to a polymer melt extrusion device with intelligent temperature control function. Figure 2 Cross-sectional view of section AA;

[0028] Figure 4 This is a schematic diagram of the internal structure of the spinning box of a polymer melt extrusion device with intelligent temperature control function according to the present invention.

[0029] Figure 5 This is a schematic diagram of the internal structure of the cone cap of a polymer melt extrusion device with intelligent temperature control function according to the present invention;

[0030] Figure 6 This is a schematic diagram of the external structure of a partial detection unit of a polymer melt extrusion device with intelligent temperature control function according to the present invention.

[0031] Figure 7 This invention relates to a polymer melt extrusion device with intelligent temperature control function. Figure 6 Another perspective on the structure;

[0032] Figure 8 This invention relates to a polymer melt extrusion device with intelligent temperature control function. Figure 7 Cross-sectional view of section BB;

[0033] Figure 9 This invention relates to a polymer melt extrusion device with intelligent temperature control function. Figure 8 A partial enlarged view of the structure at point C;

[0034] Figure 10 This invention relates to a polymer melt extrusion device with intelligent temperature control function. Figure 3 A partial enlarged view of the structure at point D.

[0035] In the diagram: 1. Mounting frame; 2. Extrusion unit; 21. Motor; 22. Feed hopper; 23. Barrel; 24. Screw; 25. Conical cap; 3. Detection unit; 31. Rotary drum; 32. Semi-screw plate; 33. Slide plate; 34. Conductive plate; 35. Slider; 36. Double-headed spring telescopic rod; 37. Support rod; 38. Moving rod; 39. Rotating column; 310. Spring telescopic tube; 311. Moving plate; 312. Conical cylinder; 313. Electromagnet; 314. Magnet; 315. Probe; 316. Hobbit rod; 317. Magnetic block; 318. Energized coil; 319. Electric telescopic rod; 320. Memory spring; 4. Spinneret unit; 41. Spinning box; 42. Metering pump; 43. Spinneret; 44. Post-heating zone; 5. Air box; 51. Semiconductor cooling plate. Detailed Implementation

[0036] 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.

[0037] Example: Figures 1-10 As shown, the present invention provides a technical solution:

[0038] like Figure 1 , 3As shown, a polymer melt extrusion device with intelligent temperature control function includes a mounting frame 1, an extrusion unit 2, a detection unit 3, a spinneret unit 4, and a bellows 5. The mounting frame 1 is placed on a horizontal foundation. The extrusion unit 2 is fixedly installed on the end of the mounting frame 1 away from the horizontal foundation. The detection unit 3 is fixedly connected to the extrusion unit 2 and has the function of detecting and removing bubbles in the melt. The spinneret unit 4 is fixedly connected to the extrusion unit 2. The bellows 5 is fixedly installed on the end of the spinneret unit 4 near the horizontal foundation. A semiconductor cooling plate 51 is provided inside the bellows 5.

[0039] Mounting frame 1 is used to mount and fix extrusion unit 2. Extrusion unit 2 is used for melting materials. Detection unit 3 is used for removing bubbles from the melt. Spinning unit 4 is used for spinning the melt and post-heating. Air box 5 is used for cooling and shaping the filaments. When the material passes through extrusion unit 2 for metering and melting into a filament, the detection unit 3 detects and removes bubbles in the melt to improve the overall uniformity of the melt and avoid affecting the quality of spinning. Spinning unit 4 is used to spin the melt into filaments and then reheat it to eliminate internal stress in the fibers and avoid affecting the quality of spinning. Finally, the air box 5 is used for cooling and shaping.

[0040] like Figure 2 , 3 As shown in Figure 4, the extrusion unit 2 includes a motor 21, a feed hopper 22, a barrel 23, a screw 24, and a conical cap 25. The fixed end of the motor 21 is fixedly installed at the end cap of the barrel 23, and the output end of the motor 21 is fixedly connected to the screw 24. The barrel 23 is fixedly installed at the end of the mounting frame 1 away from the horizontal foundation. The feed hopper 22 is provided at the end of the barrel 23 away from the mounting frame 1. A heater is provided in the inner wall of the barrel 23. The conical cap 25 is provided at the end of the barrel 23 away from the motor 21. The end of the conical cap 25 is provided with a discharge port. The conical cap 25 is fixedly connected to the spinneret unit 4. A temperature sensor is provided in the inner wall of the barrel 23. The screw 24 is installed inside the barrel 23. The length of the screw 24 is 2 / 3 of the length of the barrel 23. The screw 24 is fixedly connected to the detection unit 3. Two rectangular through slots are opened at the end of the screw 24 away from the motor 21.

[0041] When the material enters the barrel 23 through the feed hopper 22, the controller controls the motor 21 to start, thereby driving the screw 24 to rotate and uniformly stir the material while pushing the material towards the cone cover 25. At this time, the controller controls the heater to start and generate high temperature, which, together with the screw 24, melts the material into a uniform melt state. When the temperature inside the barrel 23 exceeds or falls below the preset value, the controller changes the temperature of the heater to keep the melting temperature of the material within the set range, thereby achieving intelligent temperature control and ensuring product quality. The two rectangular through slots on the screw 24 are designed to facilitate the smooth movement of the moving rod 38.

[0042] like Figure 5 ,6 As shown in Figures 7, 8, 9, and 10, the detection unit 3 includes a rotating drum 31, a semi-screw plate 32, a sliding plate 33, a conductive plate 34, a slider 35, a double-headed spring telescopic rod 36, a support rod 37, a moving rod 38, a rotating column 39, a spring telescopic tube 310, a moving plate 311, a cone 312, an electromagnet 313, a magnet 314, a probe 315, a loop rod 316, a magnetic block 317, a energized coil 318, an electric telescopic rod 319, and a memory spring 320. The rotating drum 31 is fixedly connected to the screw 24 at the end near the motor 21. The rotating drum 31 is installed inside the material cylinder 23. The semi-screw plate 32 is mounted on the rotating drum 31 by tilting and rotating via a round rod. The sliding plate... One end of the 33 is fixedly connected to the upper end of the semi-screw plate 32, and the other end is fixedly connected to the conductive plate 34. A groove is provided on the rotating drum 31, and a conductive block is provided at the bottom of the groove. The conductive plate 34 is slidably installed in the groove of the rotating drum 31. The slider 35 is slidably installed on the inner wall of the rotating drum 31. The slider 35 is fixedly connected to the end of the semi-screw plate 32 near the central axis of the rotating drum 31. One end of the double-headed spring telescopic rod 36 is fixedly connected to the slider 35, and the other end is fixedly connected to the moving rod 38. The fixed end of the double-headed spring telescopic rod 36 is rotatably connected to the support rod 37. Both ends of the support rod 37 are fixedly installed on the inner wall of the rotating drum 31. There are two moving rods 38, and the two moving rods 38 are connected to each other. A spring telescopic tube 310 is connected and rotatably mounted on a rotating column 39. Both ends of the rotating column 39 are fixedly mounted on the inner wall of the rotating cylinder 31. A movable plate 311 is slidably mounted inside the rotating cylinder 31. A cone 312 is fixedly mounted on the surface of the rotating cylinder 31 away from the motor 21. Multiple sets of holes are formed on the surface of the cone 312. An electromagnet 313 is fixedly mounted at a 45-degree angle to the horizontal axis, near the central axis of the cone 312. A magnet 314 is slidably mounted inside the cone 312, near the inner wall. Multiple sets of probes 315 are provided on the end of the magnet 314 away from the electromagnet 313. A loop rod 316 is fixedly mounted on the inner wall of the cone cap 25. A coil 318 is evenly wound around the surface of the spiral rod 316. A magnetic block 317 is slidably installed inside the cone cover 25. The telescopic end of the electric telescopic rod 319 is fixedly connected to the magnetic block 317. The fixed end of the electric telescopic rod 319 is fixedly connected to the inner surface of the cone cover 25. A memory spring 320 is electrically connected to the magnetic block 317. One end of the memory spring 320 is fixedly connected to the magnetic block 317, and the other end passes through the cone cylinder 312 and is fixedly connected to the moving plate 311. A pressure sensor is provided on the end face of the magnetic block 317 near the cone cylinder 312. The magnetic block 317 is slidably installed on the spiral rod 316. An electromagnet 313 is electrically connected to a conductive block provided at the bottom of the groove in the rotating drum 31.

[0043] When a measured amount of melt is fed to press the pressure sensor on the magnetic block 317, if the melt contains air bubbles, the pressure sensor detects that the pressure value is lower than the set value. At this time, the controller activates the electric telescopic rod 319, pushing the magnetic block 317 to the left to block the melt from flowing out of the discharge port. As the magnetic block 317 moves to the left, the number of effective turns in contact with the energized coil 318 decreases, thereby increasing the current supplied by the energized coil 318 to the memory spring 320 through the magnetic block 317. This causes the memory spring 320 to contract after receiving the current, thereby driving the moving plate 3... 11 moves to the right, at which point the upper moving rod 38 moves to the right simultaneously. On one hand, this causes the upper double-headed spring telescopic rod 36 to be compressed at both ends while rotating around the support rod 37, thereby causing the slider 35 to drive the lower part of the half-screw plate 32 to move to the left simultaneously. Under the action of the round rod, the upper part of the half-screw plate 32 rotates to the right, thereby reducing the tilt angle of the half-screw plate 32. On the other hand, the spring telescopic tube 310 rotates clockwise on the rotating column 39, causing the lower slider 35 to move to the left, thereby driving the lower half-screw plate 32 to rotate to the left, together reducing the molten material conveying capacity of the half-screw plate 32. The increased speed provides more time for the subsequent stirring of the probe 315, allowing for the thorough removal of air bubbles from the melt. Simultaneously, the upper part of the semi-spiral plate 32 rotates to the right, and under the transmission action of the slide plate 33, it drives the conductive plate 34 to contact the conductive block in the groove, thus providing current to the electromagnet 313. This makes the electromagnet 313 and the magnet 314 have the same polarity. Under the repulsive force of like poles, the electromagnet 314 is pushed to move, causing the probe 315 to extend outside the cone 312, thoroughly stirring the melt containing air bubbles and breaking them up. To avoid affecting the spinning quality, when the pressure value of the pressure sensor reaches the preset value, the controller stops supplying current to the electric telescopic rod 319. Under the pressure of the melt, the magnetic block 317 is pushed to the right and flows out from the discharge port of the cone cover 25. At this time, the effective number of turns of the energized coil 318 gradually increases, the current supplied to the memory spring 320 gradually decreases, and the memory spring 320 gradually restores its own length, thereby pushing the moving plate 311 to the left. Under the transmission action of the moving rod 38, the half screw plate 32 returns to its initial angle, thereby restoring the conveying speed of the melt.

[0044] like Figure 4 As shown, the spinneret 4 includes a spinning box 41, a metering pump 42, a spinneret 43, and a post-heating zone 44. The spinning box 41 is fixedly installed at the end of the barrel 23 away from the motor 21. One end of the metering pump 42 is connected to the outlet pipe at the cone cover 25 of the barrel 23 through a pipe, and the other end of the metering pump 42 is connected to the spinneret 43 through a pipe. The metering pump 42 is installed inside the spinning box 41. The end of the spinneret 43 near the horizontal foundation is fixedly connected to the post-heating zone 44. The spinneret 43 is installed inside the spinning box 41. The end of the post-heating zone 44 near the horizontal foundation is connected to the air box 5.

[0045] After the melt enters the metering pump 42, the metering pump 42 delivers a fixed amount of melt into the spinneret 43. Under the action of the spinneret 43, the melt is divided into filaments and then passed through the post-heating zone 44 for secondary heating of the filaments, which breaks the internal stress of the fibers, thereby improving the quality of the filaments. The post-heated filaments enter the air box 5 and are cooled and shaped under the action of the semiconductor cooling plate 51.

[0046] like Figure 5 As shown, the end of the energized coil 318 closest to the motor 21 is the current input port.

[0047] When the pressure of the quantitative melt is insufficient, the magnetic block 317 moves to the left, reducing the effective number of turns of the energized coil 318, causing the memory spring 320 to contract. This reduces the angle of the semi-screw plate 32 under the action of the moving rod 38, thereby reducing the melt conveying speed. At the same time, the electromagnet 313 is energized, pushing the magnet 314 to move, causing the probe 315 to extend onto the surface of the conical cylinder 312. This uniformly stirs the melt containing air bubbles, thereby removing the air bubbles and improving product quality.

[0048] like Figure 3 , 8 As shown, the length of the rotating drum 31 is less than 1 / 3 of the length of the material drum 23.

[0049] In order to facilitate the movement of the movable plate 311, thereby changing the stirring angle of the half-screw plate 32, and at the same time, to facilitate the activation of the electric telescopic rod 319 when the pressure sensor on the magnetic block 317 detects insufficient pressure, pushing the magnetic block 317 to move to the left to block the melt feeding, so as to avoid problems with the spinning quality of the melt containing air bubbles.

[0050] like Figure 10 As shown, the probe 315 has undergone surface roughening treatment.

[0051] The roughened probe 315 alters the local flow characteristics of the melt during stirring, making the melt flow around the probe 315 more complex and turbulent, forming more eddies and turbulence. These complex flows help break the surface tension of bubbles, making it easier for bubbles to separate from the melt. At the same time, the roughened probe 315 surface can hinder the movement of bubbles. During stirring, the roughened probe 315 makes it easier for bubbles in the melt to collide. The movement trajectory of bubbles near the probe 315 is more random and variable, increasing the probability of collisions between bubbles. When bubbles collide, they merge into larger bubbles, making it easier for them to float out of the melt and be removed.

[0052] like Figure 10 As shown, magnet 314 is placed parallel to electromagnet 313.

[0053] In order to ensure that the probe 315 can accurately protrude from the cone 312, thereby stirring the bubbles in the melt and facilitating the removal of bubbles from the melt, thus improving production quality, the magnet 314 is placed parallel to the electromagnet 313 to ensure the accuracy of the movement of the probe 315.

[0054] Working principle of the invention:

[0055] When the material enters the barrel 23 through the feed hopper 22, the controller controls the motor 21 to start, thereby driving the screw 24 to rotate and uniformly stir the material while pushing the material towards the cone cover 25. At this time, the controller controls the heater to start and generate high temperature, which, together with the screw 24, melts the material into a uniform melt state. When the temperature inside the barrel 23 exceeds or falls below the preset value, the controller changes the temperature of the heater to keep the melting temperature of the material within the set range, thereby achieving intelligent temperature control and ensuring product quality. The two rectangular through slots on the screw 24 are designed to facilitate the smooth movement of the moving rod 38.

[0056] When a measured amount of melt is fed to press the pressure sensor on the magnetic block 317, if the melt contains air bubbles, the pressure sensor detects that the pressure value is lower than the set value. At this time, the controller activates the electric telescopic rod 319, pushing the magnetic block 317 to the left to block the melt from flowing out of the discharge port. As the magnetic block 317 moves to the left, the number of effective turns in contact with the energized coil 318 decreases, thereby increasing the current supplied by the energized coil 318 to the memory spring 320 through the magnetic block 317. This causes the memory spring 320 to contract after receiving the current, thereby driving the moving plate 3... 11 moves to the right, at which point the upper moving rod 38 moves to the right simultaneously. On one hand, this causes the upper double-headed spring telescopic rod 36 to be compressed at both ends while rotating around the support rod 37, thereby causing the slider 35 to drive the lower part of the half-screw plate 32 to move to the left simultaneously. Under the action of the round rod, the upper part of the half-screw plate 32 rotates to the right, thereby reducing the tilt angle of the half-screw plate 32. On the other hand, the spring telescopic tube 310 rotates clockwise on the rotating column 39, causing the lower slider 35 to move to the left, thereby driving the lower half-screw plate 32 to rotate to the left, together reducing the molten material conveying capacity of the half-screw plate 32. The increased speed provides more time for the subsequent stirring of the probe 315, allowing for the thorough removal of air bubbles from the melt. Simultaneously, the upper part of the semi-spiral plate 32 rotates to the right, and under the transmission action of the slide plate 33, it drives the conductive plate 34 to contact the conductive block in the groove, thus providing current to the electromagnet 313. This makes the electromagnet 313 and the magnet 314 have the same polarity. Under the repulsive force of like poles, the electromagnet 314 is pushed to move, causing the probe 315 to extend outside the cone 312, thoroughly stirring the melt containing air bubbles and breaking them up. To avoid affecting the spinning quality, when the pressure value of the pressure sensor reaches the preset value, the controller stops supplying current to the electric telescopic rod 319. Under the pressure of the melt, the magnetic block 317 is pushed to the right and flows out from the discharge port of the cone cover 25. At this time, the effective number of turns of the energized coil 318 gradually increases, the current supplied to the memory spring 320 gradually decreases, and the memory spring 320 gradually restores its own length, thereby pushing the moving plate 311 to the left. Under the transmission action of the moving rod 38, the half screw plate 32 returns to its initial angle, thereby restoring the conveying speed of the melt.

[0057] After the melt enters the metering pump 42, the metering pump 42 delivers a fixed amount of melt into the spinneret 43. Under the action of the spinneret 43, the melt is divided into filaments and then passed through the post-heating zone 44 for secondary heating of the filaments, which breaks the internal stress of the fibers, thereby improving the quality of the filaments. The post-heated filaments enter the air box 5 and are cooled and shaped under the action of the semiconductor cooling plate 51.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A polymer melt extrusion device with intelligent temperature control function, characterized in that: The polymer melt extrusion device with intelligent temperature control function includes a mounting frame (1), an extrusion unit (2), a detection unit (3), a spinneret unit (4), and a bellows (5). The mounting frame (1) is placed on a horizontal base. The extrusion unit (2) is fixedly installed on the end of the mounting frame (1) away from the horizontal base. The detection unit (3) is fixedly connected to the extrusion unit (2) and has the function of detecting and removing bubbles in the melt. The spinneret unit (4) is fixedly connected to the extrusion unit (2). The bellows (5) is fixedly installed on the end of the spinneret unit (4) close to the horizontal base. A semiconductor cooling plate (51) is provided inside the bellows (5). The detection unit (3) includes a rotating drum (31), a semi-screw plate (32), a sliding plate (33), a conductive plate (34), a slider (35), a double-headed spring telescopic rod (36), a support rod (37), a moving rod (38), a rotating column (39), a spring telescopic tube (310), a moving plate (311), a cone (312), an electromagnet (313), a magnet (314), a probe (315), a spiral rod (316), a magnetic block (317), a energized coil (318), an electric telescopic rod (319), and a memory spring (320). The rotating drum (31) is fixedly connected to the screw (24) at one end near the motor (21). The rotating drum (31) is installed inside the material cylinder (23). The semi-screw plate (32) is connected to the material cylinder (23) by a round rod. The slide plate (33) is tilted and rotated on the rotating drum (31). One end of the slide plate (33) is fixedly connected to the upper end of the half-screw plate (32), and the other end is fixedly connected to the conductive plate (34). The rotating drum (31) has a groove, and a conductive block is set at the bottom of the groove. The conductive plate (34) is slidably installed in the groove of the rotating drum (31). The slider (35) is slidably installed on the inner wall of the rotating drum (31). The slider (35) is fixedly connected to the half-screw plate (32) near the central axis of the rotating drum (31). One end of the double-headed spring telescopic rod (36) is fixedly connected to the slider (35), and the other end is fixedly connected to the moving rod (38). The fixed end of the double-headed spring telescopic rod (36) is rotatably connected to the support rod (37). The moving rod (38) is fixedly installed on the inner wall of the rotating cylinder (31) at both ends. There are two moving rods (38), which are connected by a spring telescopic tube (310). The spring telescopic tube (310) is rotatably installed on the rotating column (39). The rotating column (39) is fixedly installed on the inner wall of the rotating cylinder (31) at both ends. The moving plate (311) is slidably installed inside the rotating cylinder (31). The cone (312) is fixedly installed on the surface of the rotating cylinder (31) away from the motor (21). Multiple sets of holes are opened on the surface of the cone (312). The electromagnet (313) is fixedly installed at a 45-degree angle to the horizontal axis and is located inside the cone (312) near the central axis. The magnet (314) is slidably installed near the cone (312). Inside the inner wall, the magnet (314) is provided with multiple sets of probes (315) at the end away from the electromagnet (313). The spiral rod (316) is fixedly installed on the inner wall of the cone cap (25). A current-carrying coil (318) is evenly wound on the surface of the spiral rod (316). The magnetic block (317) is slidably installed inside the cone cap (25). The telescopic end of the electric telescopic rod (319) is fixedly connected to the magnetic block (317). The fixed end of the electric telescopic rod (319) is fixedly connected to the inner surface of the cone cap (25). The memory spring (320) is electrically connected to the magnetic block (317). One end of the memory spring (320) is fixedly connected to the magnetic block (317), and the other end passes through the cone cylinder (312) and is fixedly connected to the moving plate (311).A pressure sensor is provided on one end face of the magnetic block (317) near the cone (312). The magnetic block (317) is slidably mounted on the spiral rod (316). The electromagnet (313) is electrically connected to a conductive block provided at the bottom of the groove in the rotating drum (31).

2. The polymer melt extrusion device with intelligent temperature control function according to claim 1, characterized in that: The extrusion unit (2) includes a motor (21), a feed hopper (22), a barrel (23), a screw (24), and a cone cap (25). The fixed end of the motor (21) is fixedly installed at the end cap of the barrel (23). The output end of the motor (21) is fixedly connected to the screw (24). The barrel (23) is fixedly installed at the end of the mounting frame (1) away from the horizontal foundation. The feed hopper (22) is provided at the end of the barrel (23) away from the mounting frame (1). A heater is provided in the inner wall of the barrel (23). 23) A cone cover (25) is provided at the end away from the motor (21). The cone cover (25) has a discharge port at the end. The cone cover (25) is fixedly connected to the spinneret (4). A temperature sensor is provided on the inner wall of the barrel (23). The screw (24) is installed inside the barrel (23). The length of the screw (24) is 2 / 3 of the length of the barrel (23). The screw (24) is fixedly connected to the detection unit (3). Two rectangular through slots are opened at the end of the screw (24) away from the motor (21).

3. A polymer melt extrusion device with intelligent temperature control function according to claim 2, characterized in that: The spinning unit (4) includes a spinning box (41), a metering pump (42), a spinneret (43), and a post-heating zone (44). The spinning box (41) is fixedly installed at the end of the barrel (23) away from the motor (21). One end of the metering pump (42) is connected to the outlet pipe at the cone cap (25) of the barrel (23) through a pipe. The other end of the metering pump (42) is connected to the spinneret (43) through a pipe. The metering pump (42) is installed inside the spinning box (41). The end of the spinneret (43) near the horizontal foundation is fixedly connected to the post-heating zone (44). The spinneret (43) is installed inside the spinning box (41). The end of the post-heating zone (44) near the horizontal foundation is connected to the air box (5).

4. A polymer melt extrusion device with intelligent temperature control function according to claim 1, characterized in that: The end of the energized coil (318) closest to the motor (21) is the current input port.

5. A polymer melt extrusion device with intelligent temperature control function according to claim 1, characterized in that: The length of the rotating drum (31) is less than 1 / 3 of the length of the material cylinder (23).

6. A polymer melt extrusion device with intelligent temperature control function according to claim 2, characterized in that: The probe (315) undergoes surface roughening treatment.

7. A polymer melt extrusion device with intelligent temperature control function according to claim 3, characterized in that: The magnet (314) is placed parallel to the electromagnet (313).

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