Polymer melt extrusion device with intelligent temperature control function

Abstract

The invention discloses a polymer melt extrusion device with an intelligent temperature control function, and relates to the technical field of chemical fiber production equipment.The polymer melt extrusion device comprises a mounting frame, an extrusion unit, a detection unit, a spinning unit and an air belt.The mounting frame is used for mounting and fixing the extrusion unit, the extrusion unit is used for melting materials, the detection unit is used for removing melt bubbles, and the spinning unit is used for spinning the melt. The spinning unit is used for spinning and post-heating of the melt, the air bellow is used for cooling and forming of spinning, and when materials are metered through the extrusion unit and melted into the melt, bubbles in the melt are detected and removed through the detection unit, so that the overall uniformity of the melt is improved, and the spinning quality is prevented from being influenced; the spinning unit is used for conducting secondary heating after the melt is subjected to spinning forming, internal stress in fibers is eliminated, the influence on the spinning quality is avoided, and finally cooling forming is conducted through an air bellow.

Description

Technical Field

[0001] The invention relates to the technical field of chemical fiber production equipment, in particular to a polymer melt extrusion device with an intelligent temperature control function. Background Art

[0002] In modern industrial production, especially in the fields of textiles and plastic processing, polymer melt extrusion is a key technology. By heating the polymer raw materials to a molten state and extruding them into specific shapes (such as fibers, pipes, plates, etc.), an important transformation step from raw materials to final products is achieved. For example, in the production of polyester fibers, the quality of melt extrusion directly determines the key properties of the fibers, such as strength, fineness and uniformity, which further affect the quality and use 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 by the polymer during heating, and air entrained during processing. These bubbles will remain in the product after melt extrusion and have a negative impact on the physical and mechanical properties of the product. Taking plastic pipe production as an example, bubbles will reduce the density of the pipe, reduce its strength and pressure resistance, and easily cause safety hazards such as rupture during use. In fiber production, bubbles will cause holes and discontinuities in the fiber, reduce the strength and uniformity of the fiber, and affect the quality of the textile. Due to the uneven mixing of heating temperatures in the current heating process or the different heat conduction rates of the melt, the temperature distribution is uneven during the heating process, and more bubbles will be generated in the locally overheated areas. It is necessary to achieve intelligent temperature control according to the state and temperature of the melt in each zone to minimize the generation of bubbles. Therefore, the removal of bubbles cannot be completely removed by temperature control alone. The existing vacuum degassing and degassing methods require additional vacuum equipment and complex sealing structures, which increase equipment costs and maintenance difficulties. In addition, for high-viscosity polymer melts, the degassing effect is limited. Therefore, there is a need for a method that combines intelligent temperature control and degassing mechanisms to achieve bubble removal. Summary of the invention

[0004] The purpose of the present 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 object, the present invention provides the following technical solutions:

[0006] The polymer melt extrusion device with intelligent temperature control function comprises a mounting frame, an extrusion unit, a detection unit, a spinneret unit and a bellows, wherein the mounting frame is placed on a horizontal foundation, the extrusion unit is fixedly mounted on an end of the mounting frame away from the horizontal foundation, the detection unit is fixedly connected to the extrusion unit, the detection unit 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 mounted on an end of the spinneret unit close to the horizontal foundation, and a semiconductor refrigeration plate is arranged 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 in the melt, the spinneret unit is used for melt spinning and post-heating, and the bellows is used for cooling and forming the spinning. When the material is metered and melted into the melt by the extrusion unit, the bubbles in the melt are detected and removed by the detection unit to improve the overall uniformity of the melt and avoid affecting the quality of spinning. The spinneret unit is used to spin the melt to form a secondary heating after spinning to eliminate the internal stress in the fiber and avoid affecting the spinning quality. Finally, the bellows are used for cooling and forming.

[0008] Furthermore, the extrusion unit includes a motor, a feed hopper, a barrel, a screw and a cone cover. The fixed end of the motor is fixedly installed on the barrel end cover, the motor output end is fixedly connected to the screw, the barrel is fixedly installed on the end of the mounting frame away from the horizontal foundation, the feed hopper is provided at the end of the barrel away from the mounting frame, a heater is provided in the inner wall of the barrel, a cone cover is provided at the end of the barrel away from the motor, a discharge port is provided at the end of the cone cover, the cone cover is fixedly connected to the spinneret unit, a temperature sensor is provided on the inner wall of the barrel, the screw is installed inside the barrel, the length of the screw is 2 / 3 of the length of the barrel, the screw is fixedly connected to the detection unit, and two rectangular through grooves are provided at the end of the screw away from the motor.

[0009] When the material passes through the feed hopper and enters the barrel, the controller controls the motor to start, thereby driving the screw to rotate and stir the material evenly while pushing the material toward the cone cover. At this time, the controller controls the heater to start and generate high temperature, and cooperates with the screw to melt the material into a uniform melt state. When the temperature inside the barrel exceeds or is lower than the preset value, the controller changes the temperature of the heater to keep the melting temperature of the material within the set range, thereby realizing intelligent temperature control and ensuring product quality. The two rectangular through grooves on the screw are set to facilitate the smooth movement of the moving rod.

[0010] Furthermore, the detection unit includes a rotating drum, a half-screw plate, a slide 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 conical drum, an electromagnet, a magnet, a probe, a recoil rod, a magnetic block, an energized coil, an electric telescopic rod and a memory spring. The rotating drum is fixedly connected to the screw at one end close to the motor. The rotating drum is installed inside the barrel. The half-screw plate is tilted and rotatably installed on the rotating drum through a round rod. One end of the slide plate is fixedly connected to the upper end of the half-screw plate, and the other end is fixedly connected to the conductive plate. The rotating drum is provided with a groove, and a conductive block is provided 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. The slider is fixedly connected to one end of the half-screw plate close to 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, and both ends of the support rod are fixedly installed on the inner wall of the rotating drum. There are two moving rods, and the two moving rods are extended by springs. The spring telescopic tube is rotatably mounted on the rotating column, and both ends of the rotating column are fixedly mounted on the inner wall of the rotating cylinder. The movable plate is slidably mounted inside the rotating cylinder. The cone cylinder is fixedly mounted on the surface of one end of the rotating cylinder away from the motor. A plurality of groups of holes are provided on the surface of the cone cylinder. The electromagnet is tilted with the horizontal axis and fixedly mounted inside the end close to the central axis of the cone cylinder. The magnet is slidably mounted inside the end close to the inner wall of the cone cylinder. A plurality of groups of probes are arranged at the end of the magnet away from the electromagnet. The reciprocating rod is fixedly mounted on the inner wall of the cone cover end. The surface of the reciprocating rod is evenly wound with an energized coil. The magnetic block is slidably mounted in the cone cover. The telescopic end of the electric telescopic rod is fixedly connected to the magnetic block. The fixed end of the electric telescopic rod is fixedly connected to the inner surface of the cone cover. The memory spring is electrically connected to the magnetic block. One end of the memory spring is fixedly connected to the magnetic block, and the other end passes through the cone cylinder and is fixedly connected to the movable plate. A pressure sensor is arranged on the end surface of the magnetic block close to the cone cylinder. The magnetic block is slidably mounted on the reciprocating rod. The electromagnet is electrically connected to the conductive block arranged at the bottom of the groove of the rotating cylinder.

[0011] When a fixed amount of melt is conveyed to squeeze the pressure sensor on the magnetic block, if there are bubbles inside the melt, the pressure sensor detects that the pressure value at this time is less than the set value. At this time, the controller controls the electric telescopic rod to start, pushing the magnetic block to move to the left to prevent the melt from flowing out of the discharge port. While the magnetic block moves to the left, the number of effective circles in contact with the energized coil decreases, thereby increasing the current conveyed by the energized coil to the memory spring through the magnetic block, causing the memory spring to contract after receiving the current, thereby driving the moving plate to move to the right. At this time, the upper moving rod moves to the right synchronously, on the one hand, driving the upper double-headed spring telescopic rod to be compressed at both ends while rotating around the support rod, so that the slider drives the lower part of the half-screw plate to move to the left synchronously, and under the action of the round rod, the upper part of the half-screw plate rotates to the right, thereby reducing the inclination angle of the half-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 driving the lower half-screw plate to rotate to the left, thereby jointly reducing the speed of the half-screw plate conveying the melt. , providing more time for subsequent probe stirring, so that the bubbles in the melt can be fully removed, and at the same time, the upper half of the spiral plate rotates to the right, and the conductive plate is driven to contact the conductive block in the groove under the transmission action of the slide, thereby providing current transmission for the electromagnet, so that the electromagnet and the magnet have the same polarity, and the magnet is pushed to move under the effect of like charges repelling each other, so that the probe is extended to the outside of the cone, and the melt containing bubbles is fully stirred, thereby breaking the bubbles in the melt 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, and the magnetic block is pushed to the right under the pressure of the melt 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, and the current supplied to the memory spring gradually decreases. The memory spring gradually restores its own length, thereby pushing the moving plate to move to the left, and the half-screw plate is restored to its initial angle under the transmission action of the moving rod, thereby restoring the conveying speed of the melt.

[0012] Furthermore, the spinneret 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 discharge 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, and the end of the spinneret close to the horizontal base is fixedly connected to the post-heating zone. The spinneret is installed inside the spinning box, and the post-heating zone close to the horizontal base is conductively connected to the wind box.

[0013] After the melt enters the metering pump, a certain amount of the melt is transported into the spinneret by the metering pump. Under the action of the spinneret, the melt is divided into spinning shapes and passed through the post-heating zone for secondary heating to destroy the internal stress of the fiber, thereby improving the quality of spinning. The post-heated spinning enters the bellows and is cooled and formed under the action of the semiconductor refrigeration plate.

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

[0015] When the quantitative melt pressure is insufficient, the magnetic block moves to the left, reducing the effective number of turns of the energized coil and shrinking the memory spring. As a result, the angle of the half screw plate is reduced under the action of the moving rod, which reduces the conveying speed of the melt and enables the electromagnet to be energized to push the magnet to move, so that the probe extends to the surface of the cone cylinder and evenly stirs the melt containing bubbles, thereby removing the bubbles and improving product quality.

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

[0017] In order to facilitate the movement of the movable plate, thereby changing the stirring angle of the half-screw plate and facilitating the pressure sensor on the magnetic block to detect insufficient pressure, the electric telescopic rod is started to push the magnetic block to the left to block the melt from being discharged, thereby avoiding problems with the spinning quality caused by the melt containing bubbles.

[0018] Furthermore, the probe surface is roughened.

[0019] The roughened probe will change the local flow characteristics of the melt during stirring. The flow of the melt around the probe will become more complex and turbulent, forming more eddies and turbulence. These complex flows help to break the surface tension of the bubbles, making it easier for the bubbles to separate from the melt. At the same time, the roughened probe surface can hinder the movement of the bubbles. The roughened probe will make the bubbles in the melt more prone to collision during stirring. The movement trajectory of the bubbles near the probe will be more random and varied, increasing the probability of collision between bubbles. When the bubbles collide, they will 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 make the probe accurately protrude from the cone, so as to stir the bubbles in the melt and remove them, thereby 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 present invention has the following beneficial effects:

[0023] 1. When the pressure sensor on the magnetic block is less than the set value, the electric telescopic rod of the present invention starts, pushing the magnetic block to move to the left, blocking the discharge port and reducing the effective number of circles of the energized coil in contact. At this time, the current of the memory spring increases and contracts, thereby driving the moving plate to push the upper moving rod to move to the right, compressing the two ends of the double-headed spring telescopic rod to rotate around the support rod at the same time, so that the slider drives the lower part of the half-screw plate to move to the left, and under the action of the round rod, the upper part of the half-screw plate rotates to the right, thereby reducing the inclination angle of the half-screw plate and the speed at which the half-screw plate conveys the melt. At the same time, the half-screw plate pushes the conductive plate to contact the conductive block, so that the electromagnet is energized, pushing the magnet to move, and extending the probe to the outside of the cone, The melt containing bubbles is fully stirred, and the conveying angle is reduced in cooperation with the half-screw plate, so that the probe has sufficient time to break the bubbles in the melt, thereby improving the production quality of spinning.

[0024] 2. The roughened probe of the present invention changes the local flow characteristics of the melt during stirring. The flow of the melt around the probe becomes more complex and turbulent, which is convenient for breaking the surface tension of the bubbles and makes it easier for the bubbles to be separated from the melt. The probe makes the bubbles in the melt more likely to collide during stirring, increasing the probability of collision between bubbles, forming larger bubbles during collision, which are easier to float out of the melt and be removed. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0027] Figure 3 A polymer melt extrusion device with intelligent temperature control function according to the present invention Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0028] Figure 4 This is a schematic diagram of the internal structure of a 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 a cone cover 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 appearance structure of a part of the detection unit of a polymer melt extrusion device with intelligent temperature control function of the present invention;

[0031] Figure 7 A polymer melt extrusion device with intelligent temperature control function according to the present invention Figure 6 Another perspective structural diagram;

[0032] Figure 8 A polymer melt extrusion device with intelligent temperature control function according to the present invention Figure 7 Schematic diagram of the cross-section structure at BB in the middle;

[0033] Fig. 9 A polymer melt extrusion device with intelligent temperature control function according to the present invention Figure 8 The structural schematic diagram of the partial enlarged view at C in the middle;

[0034] Fig.10 A polymer melt extrusion device with intelligent temperature control function according to the present invention Figure 3 Schematic diagram of the structure of the partial enlarged view at point D in the middle.

[0035] In the figure: 1. mounting frame; 2. extrusion unit; 21. motor; 22. feed hopper; 23. barrel; 24. screw; 25. cone cover; 3. detection unit; 31. rotating drum; 32. half 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. cone; 313. electromagnet; 314. magnet; 315. probe; 316. spring 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. bellows; 51. semiconductor refrigeration plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example: Figure 1-Figure 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 mounted on an end of the mounting frame 1 away from the horizontal foundation, the detection unit 3 is fixedly connected to the extrusion unit 2, the detection unit 3 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 mounted on an end of the spinneret unit 4 close to the horizontal foundation, and a semiconductor refrigeration plate 51 is arranged inside the bellows 5.

[0039] The mounting frame 1 is used to install and fix the extrusion unit 2, the extrusion unit 2 is used for melting the material, the detection unit 3 is used for removing bubbles in the melt, the spinneret unit 4 is used for melt spinning and post-heating, and the bellows 5 is used for cooling and forming the spinning. When the material passes through the extrusion unit 2 for metering and melting into the melt, the bubbles in the melt are detected and removed by the detection unit 3 to improve the overall uniformity of the melt and avoid affecting the quality of spinning. The spinneret unit 4 is used to spin the melt to form a secondary heating after spinning to eliminate the internal stress in the fiber and avoid affecting the spinning quality. Finally, the bellows 5 is used for cooling and forming.

[0040] like Figure 2 , 3 As shown in Figures 4, the extrusion unit 2 includes a motor 21, a feed hopper 22, a barrel 23, a screw 24 and a cone cover 25. The fixed end of the motor 21 is fixedly installed on the end cover of the barrel 23, the output end of the motor 21 is fixedly connected to the screw 24, the barrel 23 is fixedly installed on 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 end of the barrel 23 away from the motor 21 is provided with a cone cover 25, a discharge port is provided at the end of the cone cover 25, the cone cover 25 is fixedly connected to the spinneret unit 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, and two rectangular through grooves are provided at the end of the screw 24 away from the motor 21.

[0041] When the material passes through the feed hopper 22 and enters the barrel 23, the controller controls the motor 21 to start, thereby driving the screw 24 to rotate to stir the material evenly while pushing the material toward the cone cover 25. At this time, the controller controls the heater to start and generate high temperature, and cooperates with the screw 24 to melt the material into a uniform melt state. When the temperature inside the barrel 23 exceeds or is lower than the preset value, the controller changes the temperature of the heater to keep the melting temperature of the material within the set range, thereby realizing intelligent temperature control and ensuring product quality. The two rectangular through grooves on the screw 24 are set 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 half screw plate 32, a slide 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 retractable rod 316, a magnetic block 317, an energized coil 318, an electric telescopic rod 319 and a memory spring 320. The end of the rotating drum 31 close to the motor 21 is fixedly connected to the screw 24, the rotating drum 31 is installed inside the barrel 23, the half screw plate 32 is installed on the rotating drum 31 by tilting and rotating through a round rod, and the slide plate One end of the half-screw 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. A groove is provided on the rotating cylinder 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 cylinder 31. The slider 35 is slidably installed on the inner wall of the rotating cylinder 31. The slider 35 is fixedly connected to one end of the half-screw plate 32 close to the central axis of the rotating cylinder 31. One end of the telescopic end of the double-headed spring telescopic rod 36 is fixedly connected to the slider 35, and the other end of the telescopic 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 cylinder 31. There are two moving rods 38, and the two moving rods 38 are connected The spring telescopic tube 310 is connected, the spring telescopic tube 310 is rotatably mounted on the rotating column 39, both ends of the rotating column 39 are fixedly mounted on the inner wall of the rotating cylinder 31, the movable plate 311 is slidably mounted inside the rotating cylinder 31, the cone cylinder 312 is fixedly mounted on the surface of the end of the rotating cylinder 31 away from the motor 21, and a plurality of groups of holes are provided on the surface of the cone cylinder 312. The electromagnet 313 is fixedly mounted on the inner end of the cone cylinder 312 at an angle of 45 degrees to the horizontal axis, and the magnet 314 is slidably mounted on the inner end of the cone cylinder 312. A plurality of groups of probes 315 are arranged on the end of the magnet 314 away from the electromagnet 313, and the retractable rod 316 is fixedly mounted on the inner wall of the end of the cone cover 25 The surface of the circular rod 316 is evenly wound with an energized coil 318, the magnetic block 317 is slidably installed in the cone cover 25, the telescopic end of the electric telescopic rod 319 is fixedly connected to the magnetic block 317, and the fixed end of the electric telescopic rod 319 is fixedly connected to the inner surface of the cone cover 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 movable plate 311. A pressure sensor is provided on the end surface of the magnetic block 317 close to the cone cylinder 312, the magnetic block 317 is slidably installed on the circular rod 316, and the electromagnet 313 is electrically connected to the conductive block provided at the bottom of the groove of the rotating cylinder 31.

[0043] When a certain amount of melt is delivered to squeeze the pressure sensor on the magnetic block 317, if there are bubbles inside the melt, the pressure sensor detects that the pressure value at this time is less than the set value. At this time, the controller controls the electric telescopic rod 319 to start, pushing the magnetic block 317 to move left, blocking the melt from flowing out of the discharge port. While the magnetic block 317 moves left, the number of effective circles in contact with the energized coil 318 decreases, so that the current delivered by the energized coil 318 to the memory spring 320 through the magnetic block 317 increases, causing the memory spring 320 to contract after receiving the current, thereby driving the moving plate 319 to move to the left. 11 moves to the right, at this time, the upper moving rod 38 moves to the right synchronously, on the one hand, driving the upper double-headed spring telescopic rod 36 to be compressed at both ends and rotate around the support rod 37, so that the slider 35 drives the lower part of the half screw plate 32 to move to the left synchronously, and under the action of the round rod, the upper part of the half screw plate 32 rotates to the right, thereby reducing the inclination angle of the half screw plate 32, on the other hand, the spring telescopic tube 310 rotates clockwise on the rotating column 39, so that the lower slider 35 moves to the left, thereby driving the lower half screw plate 32 to rotate to the left, and together reducing the half screw plate 32 conveying the melt. The speed is increased to provide more time for the subsequent stirring of the probe 315, so that the bubbles in the melt are fully removed. At the same time, the upper part of the upper half screw plate 32 rotates to the right, and the conductive plate 34 is driven to contact the conductive block in the groove under the driving action of the slide plate 33, thereby providing current transmission for the electromagnet 313, so that the electromagnet 313 and the magnet 314 have the same polarity, and the magnet 314 is pushed to move under the effect of like charges repelling each other, so that the probe 315 extends to the outside of the cone 312, and the melt containing bubbles is fully stirred, thereby breaking the bubbles in the melt. , 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, and the magnetic block 317 is pushed to the right under the pressure of the melt 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, and 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 move to the left, and under the transmission action of the moving rod 38, the half-screw plate 32 restores its initial angle, thereby restoring the conveying speed of the melt.

[0044] like Figure 4 As shown, the spinneret 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 discharge 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, and the spinneret 43 is fixedly connected to the post-heating zone 44 at one end close to the horizontal base. The spinneret 43 is installed inside the spinning box 41, and the post-heating zone 44 is conductively connected to the wind box 5 at one end close to the horizontal base.

[0045] After the melt enters the metering pump 42, a certain amount of the melt is transported by the metering pump 42 into the spinneret 43. Under the action of the spinneret 43, the melt is divided into spun fibers and passed through the post-heating zone 44 for secondary heating to destroy the internal stress of the fiber, thereby improving the quality of the spinning. The post-heated spun fibers enter the bellows 5 and are cooled and formed under the action of the semiconductor refrigeration plate 51.

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

[0047] When the quantitative melt pressure is insufficient, the magnetic block 317 moves to the left, reducing the effective number of turns of the energized coil 318 and contracting the memory spring 320. As a result, the angle of the half screw plate 32 is reduced under the action of the moving rod 38, thereby reducing the conveying speed of the melt and enabling the electromagnet 313 to be energized to push the magnet 314 to move, so that the probe 315 extends to the surface of the cone tube 312, and evenly stirs the melt containing bubbles, thereby removing the bubbles and improving product quality.

[0048] like Figure 3 , 8 As shown, the length of the drum 31 is less than 1 / 3 of the length of the barrel 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 facilitating that when the pressure sensor on the magnetic block 317 detects insufficient pressure, the electric telescopic rod 319 is started to push the magnetic block 317 to the left to block the melt from being discharged, thereby avoiding problems with the spinning quality caused by the melt containing bubbles.

[0050] like Fig.10 As shown, the surface of the probe 315 is roughened.

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

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

[0053] In order to make the probe 315 accurately protrude from the cone 312, so as to stir the bubbles in the melt and remove the bubbles in the melt, thereby improving the 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 present invention:

[0055] When the material passes through the feed hopper 22 and enters the barrel 23, the controller controls the motor 21 to start, thereby driving the screw 24 to rotate to stir the material evenly while pushing the material toward the cone cover 25. At this time, the controller controls the heater to start and generate high temperature, and cooperates with the screw 24 to melt the material into a uniform melt state. When the temperature inside the barrel 23 exceeds or is lower than the preset value, the controller changes the temperature of the heater to keep the melting temperature of the material within the set range, thereby realizing intelligent temperature control and ensuring product quality. The two rectangular through grooves on the screw 24 are set to facilitate the smooth movement of the moving rod 38.

[0056] When a certain amount of melt is delivered to squeeze the pressure sensor on the magnetic block 317, if there are bubbles inside the melt, the pressure sensor detects that the pressure value at this time is less than the set value. At this time, the controller controls the electric telescopic rod 319 to start, pushing the magnetic block 317 to move left, blocking the melt from flowing out of the discharge port. While the magnetic block 317 moves left, the number of effective circles in contact with the energized coil 318 decreases, so that the current delivered by the energized coil 318 to the memory spring 320 through the magnetic block 317 increases, causing the memory spring 320 to contract after receiving the current, thereby driving the moving plate 319 to move to the left. 11 moves to the right, at this time, the upper moving rod 38 moves to the right synchronously, on the one hand, driving the upper double-headed spring telescopic rod 36 to be compressed at both ends and rotate around the support rod 37, so that the slider 35 drives the lower part of the half screw plate 32 to move to the left synchronously, and under the action of the round rod, the upper part of the half screw plate 32 rotates to the right, thereby reducing the inclination angle of the half screw plate 32, on the other hand, the spring telescopic tube 310 rotates clockwise on the rotating column 39, so that the lower slider 35 moves to the left, thereby driving the lower half screw plate 32 to rotate to the left, and together reducing the half screw plate 32 conveying the melt. The speed is increased to provide more time for the subsequent stirring of the probe 315, so that the bubbles in the melt are fully removed. At the same time, the upper part of the upper half screw plate 32 rotates to the right, and the conductive plate 34 is driven to contact the conductive block in the groove under the driving action of the slide plate 33, thereby providing current transmission for the electromagnet 313, so that the electromagnet 313 and the magnet 314 have the same polarity, and the magnet 314 is pushed to move under the effect of like charges repelling each other, so that the probe 315 extends to the outside of the cone 312, and the melt containing bubbles is fully stirred, thereby breaking the bubbles in the melt. , 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, and the magnetic block 317 is pushed to the right under the pressure of the melt 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, and 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 move to the left, and under the transmission action of the moving rod 38, the half-screw plate 32 restores its initial angle, thereby restoring the conveying speed of the melt.

[0057] After the melt enters the metering pump 42, a certain amount of the melt is transported by the metering pump 42 into the spinneret 43. Under the action of the spinneret 43, the melt is divided into spun fibers and passed through the post-heating zone 44 for secondary heating to destroy the internal stress of the fiber, thereby improving the quality of the spinning. The post-heated spun fibers enter the bellows 5 and are cooled and formed under the action of the semiconductor refrigeration plate 51.

[0058] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A polymer melt extrusion device with intelligent temperature control function, characterized in that: A polymer melt extrusion device with intelligent temperature control function comprises a mounting frame (1), an extrusion unit (2), a detection unit (3), a spinneret unit (4) and a bellows (5), wherein the mounting frame (1) is placed on a horizontal foundation, the extrusion unit (2) is fixedly mounted on an end of the mounting frame (1) away from the horizontal foundation, the detection unit (3) is fixedly connected to the extrusion unit (2), the detection unit (3) 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 mounted on an end of the spinneret unit (4) close to the horizontal foundation, and a semiconductor refrigeration plate (51) is arranged inside the bellows (5).

2. The polymer melt extrusion device with intelligent temperature control function according to claim 1, characterized in that: The extrusion unit (2) comprises a motor (21), a feed hopper (22), a barrel (23), a screw (24) and a cone cover (25); the fixed end of the motor (21) is fixedly mounted on the end cover of the barrel (23); the output end of the motor (21) is fixedly connected to the screw (24); the barrel (23) is fixedly mounted on an end of a mounting frame (1) away from a horizontal base; the end of the barrel (23) away from the mounting frame (1) is provided with a feed hopper (22); a heater is provided in the inner wall of the barrel (23); A conical cover (25) is provided at one end of the barrel (23) away from the motor (21), a discharge port is provided at the end of the conical cover (25), the conical cover (25) is fixedly connected to the spinneret unit (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), and two rectangular through grooves are provided at the end of the screw (24) away from the motor (21).

3. The polymer melt extrusion device with intelligent temperature control function according to claim 2, characterized in that: The detection unit (3) comprises a rotating cylinder (31), a half screw plate (32), a slide plate (33), a conductive plate (34), a slide block (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 retractable rod (316), a magnetic block (317), an energized coil (318), an electric telescopic rod (319) and a memory spring (320). The rotating cylinder (31) is fixedly connected to the screw rod (24) at one end close to the motor (21). The rotating cylinder (31) is installed inside the barrel (23). The half screw plate (32) is connected to the cylinder by a round rod. The sliding plate (33) is installed on the rotating cylinder (31) in an inclined and rotatable manner. One end of the sliding 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). A groove is provided on the rotating cylinder (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 cylinder (31). The sliding block (35) is slidably installed on the inner wall of the rotating cylinder (31). The sliding block (35) is fixedly connected to one end of the half screw plate (32) close to the central axis of the rotating cylinder (31). One end of the telescopic end of the double-headed spring telescopic rod (36) is fixedly connected to the sliding block (35), and the other end of the telescopic 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 support rod (37) ) are fixedly mounted on the inner wall of the rotating cylinder (31), there are two moving rods (38), the two moving rods (38) are connected by a spring telescopic tube (310), the spring telescopic tube (310) is rotatably mounted on a rotating column (39), the two ends of the rotating column (39) are fixedly mounted on the inner wall of the rotating cylinder (31), the moving plate (311) is slidably mounted inside the rotating cylinder (31), the cone cylinder (312) is fixedly mounted on the surface of one end of the rotating cylinder (31) away from the motor (21), the surface of the cone cylinder (312) is provided with a plurality of groups of holes, the electromagnet (313) is fixedly mounted inside the end of the central axis of the cone cylinder (312) at an angle of 45 degrees to the horizontal axis, and the magnet (314) is slidably mounted near the cone cylinder (312) Inside the inner wall end, a plurality of probes (315) are arranged at one end of the magnet (314) away from the electromagnet (313), the reciprocating rod (316) is fixedly mounted on the inner wall of the end of the cone cover (25), the surface of the reciprocating rod (316) is evenly wound with an energized coil (318), the magnetic block (317) is slidably mounted in 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), 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 movable plate (311),A pressure sensor is provided on one end surface of the magnetic block (317) close to the conical cylinder (312), and the magnetic block (317) is slidably mounted on the reciprocating rod (316). The electromagnet (313) is electrically connected to a conductive block provided at the bottom of the groove of the rotating cylinder (31).

4. The polymer melt extrusion device with intelligent temperature control function according to claim 2, characterized in that: The spinning unit (4) comprises a spinning box (41), a metering pump (42), a spinneret (43) and a post-heating zone (44); the spinning box (41) is fixedly mounted at one end of the barrel (23) away from the motor (21); one end of the metering pump (42) is connected to a discharge pipe at a cone cover (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 mounted inside the spinning box (41); one end of the spinneret (43) close to a horizontal base is fixedly connected to the post-heating zone (44); the spinneret (43) is mounted inside the spinning box (41); and one end of the post-heating zone (44) close to the horizontal base is conductively connected to a wind box (5).

5. The polymer melt extrusion device with intelligent temperature control function according to claim 3, characterized in that: A port of the energized coil (318) close to one end of the motor (21) is a current input port.

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

7. The polymer melt extrusion device with intelligent temperature control function according to claim 2, characterized in that: The probe (315) is subjected to a surface roughening treatment.

8. The polymer melt extrusion device with intelligent temperature control function according to claim 4, characterized in that: The magnet (314) is placed parallel to the electromagnet (313).

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