A polyester monofilament extruder
Patent Information
- Application Number
- CN202522499492.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-25
AI Technical Summary
Existing polyester monofilament extruders suffer from uneven heating, leading to localized overheating or underheating of the raw material. Furthermore, the fixed diameter of the extrusion die cannot be adjusted, affecting the quality and applicability of monofilament forming.
An extruder structure including a heating shroud, stirring shaft, spiral blades, and temperature sensor was designed to achieve uniform heating of raw materials and precise temperature control, and the detachable extrusion die structure facilitates quick replacement.
It achieves uniform melting of raw materials and rapid replacement of extrusion dies, ensuring uniform heating and stable extrusion quality, and improving the convenience and applicability of monofilament forming.
Smart Images
Figure CN224928449U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of extruder technology, and in particular to a polyester monofilament extruder. Background Technology
[0002] Polyester monofilaments, due to their excellent properties such as high strength, wear resistance, and chemical corrosion resistance, are widely used in textiles, filtration, and fisheries. The core equipment for polyester monofilament production is the extruder, which works by heating and melting the polyester raw material, then extruding the molten polyester into monofilaments through an extrusion mechanism, followed by cooling, stretching, and other subsequent processes to form the filaments. However, existing polyester monofilament extruders often suffer from uneven heating of the raw material, leading to localized overheating and carbonization, or insufficient heating and incomplete melting, affecting the quality of the monofilament forming. Furthermore, the extrusion dies in existing extruders are mostly of fixed diameter, making it difficult to adjust the diameter of the polyester monofilament according to extrusion needs, thus presenting certain limitations. Therefore, a new polyester monofilament extruder is needed. Utility Model Content
[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a polyester monofilament extruder.
[0004] The technical solution of this utility model: A polyester monofilament extruder includes an extrusion cylinder, a feed pipe at the top of the extrusion cylinder, a feed tube at the top of the feed pipe, a heating shroud between the inner and outer walls of the feed tube, a motor I at the top surface of the feed tube, the output end of the motor I extending through the interior of the feed tube and having a stirring shaft thereon, two stirring rods around the outer ring of the stirring shaft, each stirring rod having a scraper at both ends, a spiral blade I and a spiral blade II around the outer ring of the stirring shaft, a motor II at the right side of the extrusion cylinder, the output end of the motor II extending through the interior of the extrusion cylinder and having a conveying rod thereon, a conveying blade around the outer ring of the conveying rod, a feed section heating assembly, a melting section heating assembly, and a homogenization section heating assembly around the outer ring of the extrusion cylinder, a fixing frame around the left end of the extrusion cylinder, and an opening on the left inner wall of the fixing frame. The device has two slots, each with a set of limiting strips inside. An extrusion die is located at the left end of the extrusion cylinder, and a fixing plate is located on the outer ring of the right end of the extrusion die. The fixing plate is slidably connected to the inner left wall of the fixing frame. Two arc-shaped slots are formed on the left side of the fixing plate, each with a sliding groove on its right side. Each sliding groove has a movable groove on its right side. A guide rod is located inside each sliding groove, and a spring is fitted around the top of each guide rod. A slider is slidably mounted on the bottom outer ring of each guide rod. A connecting rod is located on the left side of each slider, and a lever is located on the left side of each connecting rod. A connecting block is located on the right side of each slider, and a locking block is located on the right side of each connecting block. Each locking block is slidably connected to its corresponding slot, and the left side of the locking block is abutted against the right side of the corresponding two limiting strips.
[0005] Preferably, the top of the material cylinder is provided with a feed inlet.
[0006] Preferably, the side of each scraper away from the stirring rod is in contact with the inner wall of the barrel.
[0007] Preferably, the bottom of the inner wall of the material cylinder is tapered, and the outermost side of the first spiral blade is in contact with the tapered inner wall of the material cylinder.
[0008] Preferably, the second helical blade is located inside the feed pipe and is in contact with it.
[0009] Preferably, a temperature sensor is provided on the top of each of the feeding section heating assembly, the melting section heating assembly, and the homogenization section heating assembly, and the detection end of each temperature sensor extends into the interior of the extrusion cylinder.
[0010] Preferably, the slider is slidably connected to the groove, the connecting rod is slidably connected to the arc-shaped groove, and the connecting block is slidably connected to the movable groove.
[0011] Compared with the prior art, the present invention has the following beneficial technical effects: This invention preheats and mixes raw materials uniformly by installing a heating shroud and spiral blades, ensuring heating uniformity. Simultaneously, the scraper, spiral blades one and two convey the raw materials, preventing them from adhering to the inner wall of the extrusion cylinder and ensuring continuous conveying. The inclusion of heating components for the feeding section, melting section, and homogenization section, along with temperature sensors, allows for precise control of the processing temperature in each section of the extrusion cylinder, avoiding the problems of localized overheating or underheating caused by traditional overall heating. This significantly improves the uniformity of raw material melting, laying the foundation for the quality of subsequent monofilament forming. The installation of a fixing frame and locking blocks facilitates quick replacement of the extrusion die, enhancing convenience and applicability. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an exploded view of a portion of the structure of this utility model; Figure 4 This is a cross-sectional view of a portion of the structure of this utility model; Figure 5 This is a partial cross-sectional structural diagram of the present invention.
[0013] Reference numerals: 1. Extrusion cylinder; 2. Feed pipe; 3. Material barrel; 4. Heating cover; 5. Motor 1; 6. Stirring shaft; 7. Stirring rod; 8. Scraper; 9. Spiral blade 1; 10. Spiral blade 2; 11. Motor 2; 12. Conveying rod; 13. Conveying blade; 14. Feed section heating assembly; 15. Melting section heating assembly; 16. Homogenization section heating assembly; 17. Fixing frame; 18. Limiting strip; 19. Extrusion die; 20. Fixing plate; 21. Guide rod; 22. Spring; 23. Slider; 24. Connecting rod; 25. Pulley; 26. Connecting block; 27. Locking block; 28. Feed inlet; 29. Temperature sensor. Detailed Implementation
[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example
[0015] like Figures 1 to 5As shown, the present invention proposes a polyester monofilament extruder, including an extrusion cylinder 1, a feed pipe 2 at the top of the extrusion cylinder 1, the top of the extrusion cylinder 1 and the bottom of the feed pipe 2 are fixedly connected and communicate with each other, a material cylinder 3 at the top of the feed pipe 2, the top of the feed pipe 2 and the bottom of the material cylinder 3 are fixedly connected and communicate with each other, a feed inlet 28 at the top of the material cylinder 3, the top of the material cylinder 3 and the feed inlet 28 are fixedly connected and communicate with each other, a heating cover 4 is provided between the inner and outer walls of the material cylinder 3, the heating cover 4 is provided to facilitate the preheating of the raw material inside the material cylinder 3, a motor 5 is provided on the top surface of the material cylinder 3, the top surface of the material cylinder 3 and the bottom surface of the motor 5 are fixedly connected, the output end of the motor 5 extends through into the interior of the material cylinder 3 and is provided with a stirring shaft 6, the output end of the motor 5 is rotatably connected to the material cylinder 3, the output end of the heating cover 4 is fixedly connected to the top of the stirring shaft 6, and two stirring rods 7 are provided on the outer ring of the stirring shaft 6, the outer ring of the stirring shaft 6 and the stirring rods 7 are fixedly connected; Each stirring rod 7 has a scraper 8 at both ends. The stirring rod 7 and the scraper 8 are fixedly connected. The side of each scraper 8 away from the stirring rod 7 is in contact with the inner wall of the material cylinder 3, which facilitates scraping and cleaning of the inner wall of the material cylinder 3 and prevents raw materials from sticking. The outer ring of the stirring shaft 6 is provided with a spiral blade 1 9 and a spiral blade 2 10. Both spiral blade 1 9 and spiral blade 2 10 are fixedly installed on the outer ring of the stirring shaft 6. The bottom end of the inner wall of the material cylinder 3 is tapered. The outermost part of the spiral blade 1 9 is in contact with the tapered inner wall of the material cylinder 3. The spiral blades 10 are located inside and attached to the feed pipe 2, which prevents the raw materials from sticking to the inner walls of the feed pipe 2 and the barrel 3 while conveying them. A motor 11 is provided on the right side of the extrusion cylinder 1. The right side of the extrusion cylinder 1 is fixedly connected to the left side of the motor 11. The output end of the motor 11 extends through into the interior of the extrusion cylinder 1 and is provided with a conveying rod 12. The output end of the motor 11 is rotatably connected to the extrusion cylinder 1, and the output end of the motor 11 is fixedly connected to the right end of the conveying rod 12. The outer ring of the conveyor rod 12 is provided with conveying blades 13, and the outer ring of the conveyor rod 12 is fixedly connected to the conveying blades 13. The outer ring of the extrusion cylinder 1 is provided with a feeding section heating assembly 14, a melting section heating assembly 15, and a homogenization section heating assembly 16. Temperature sensors 29 are provided on the top of each of the feeding section heating assembly 14, the melting section heating assembly 15, and the homogenization section heating assembly 16. The detection end of each temperature sensor 29 extends into the interior of the extrusion cylinder 1. By setting the feeding section heating assembly 14, the melting section heating assembly 15, and the homogenization section heating assembly 16, a temperature sensor 29 is provided on the top of each of the three components. Component 16 and temperature sensor 29 can accurately control the processing temperature of each section of extrusion cylinder 1, avoiding the problems of local overheating or insufficient local heating caused by traditional overall heating, significantly improving the uniformity of raw material melting, and laying the foundation for the subsequent monofilament forming quality. A fixing frame 17 is provided on the outer ring of the left end of extrusion cylinder 1. The outer ring of the left end of extrusion cylinder 1 is fixedly connected to the inner ring of fixing frame 17. Two slots are opened on the inner wall of the left side of fixing frame 17. A set of limiting strips 18 is provided inside each slot. The limiting strips 18 are fixedly installed inside the slot. An extrusion die 19 is provided at the left end of the extrusion cylinder 1. The extrusion cylinder 1 and the extrusion die 19 are fitted together but not fixedly connected. A fixing plate 20 is provided on the outer ring of the right end of the extrusion die 19. The outer ring of the right end of the extrusion die 19 is fixedly connected to the inner ring of the fixing plate 20. The fixing plate 20 is slidably connected to the inner wall of the left side of the fixing frame 17. Two arc-shaped slots are opened on the left side of the fixing plate 20. A sliding groove is opened on the right side of each arc-shaped slot. A movable groove is opened on the right side of each sliding groove. Each sliding groove is provided with a movable groove inside. Guide rod 21 is fixedly installed inside the slide groove. A spring 22 is sleeved on the outer ring of the top of each guide rod 21. A slider 23 is slidably set on the outer ring of the bottom of each guide rod 21. The spring 22 can always generate a force on the slider 23. The slider 23 is slidably connected to the slide groove. A connecting rod 24 is set on the left side of each slider 23. The slider 23 is fixedly connected to the right side of the connecting rod 24. The connecting rod 24 is slidably connected to the arc-shaped groove, which facilitates the movement of the connecting rod 24. Each connecting rod 24 has a lever 25 on its left side, and the left side of the connecting rod 24 is fixedly connected to the right side of the lever 25. Each slider 23 has a connecting block 26 on its right side, and the right side of the slider 23 is fixedly connected to the connecting block 26. The connecting block 26 is slidably connected to the movable groove to facilitate the movement of the connecting block 26. Each connecting block 26 has a locking block 27 on its right side, and the right side of the connecting block 26 is fixedly connected to the left side of the locking block 27. Each locking block 27 is slidably connected to the corresponding slot, and the left side of the locking block 27 is abutted against the right side of the two corresponding limit strips 18. The locking block 27 slides up and down in the slot, making it easy to quickly install and remove the locking block 27 from the inside of the slot.
[0016] In this embodiment, to prevent uneven heating of the raw material when using this device, the inside of the material cylinder 3 can be heated by the heating cover 4 while the raw material is inside the cylinder 3. At the same time, the motor 5 drives the stirring shaft 6 to rotate, so that the raw material can be stirred by the stirring rod 7 and the scraper 8, ensuring uniform heating, reducing heating dead zones, and preheating the raw material for subsequent processing. Simultaneously, the raw material is conveyed by the spiral blades 9 and 10. When the raw material is conveyed into the extrusion cylinder 1, the motor 11 drives the conveying rod 12 to rotate. The rotation of the conveying rod 12 drives the conveying blade 13 to rotate, and the rotation of the conveying blade 13 pushes the raw material to the left. At the same time, the temperature of the inner wall of the extrusion cylinder 1 is detected by the temperature sensor 29, and the information is fed back to the feeding section heating assembly 14, the melting section heating assembly 15, and the homogenizing section heating assembly 16, so that the feeding section heating assembly 14, the melting section heating assembly 15, and the homogenizing section heating assembly 16 can be heated. The heating assembly 16 heats according to the required temperature at each location to ensure uniform heating. When the extrusion die 19 needs to be quickly replaced, the two levers 25 can be moved upwards simultaneously, causing the levers 25 to move the connecting rod 24 and the slider 23 upwards, which in turn moves the connecting block 26 and the locking block 27 upwards. This allows the locking block 27 to move upwards inside the slot, moving to a position where the slot is free of the limiting strip 18. This allows the extrusion die 19 to be removed from the left end of the extrusion cylinder 1. The lever 25 connected to the other size extrusion die 19 is then moved upwards, aligning the outer wall of the extrusion die 19 with the left inner wall of the fixing frame 17. Simultaneously, the locking block 27 is aligned with the position in the slot where the limiting strip 18 is not present. Then, the limiting of the levers 25 is released, allowing the spring 22 to push the slider 23 to restore the raw material, causing the locking block 27 to slide to the bottom of the slot and be limited by the limiting strip 18, thus completing the replacement.
[0017] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.
Claims
1. A polyester monofilament extruder, comprising an extrusion cylinder (1), characterized in that: The top of the extrusion cylinder (1) is provided with a feed pipe (2), and the top of the feed pipe (2) is provided with a material cylinder (3). A heating cover (4) is provided between the inner and outer walls of the material cylinder (3). A motor (5) is provided on the top surface of the material cylinder (3). The output end of the motor (5) extends through the inside of the material cylinder (3) and is provided with a stirring shaft (6). Two stirring rods (7) are provided on the outer ring of the stirring shaft (6). Each stirring rod (7) is provided with a scraper (8) at both ends. A spiral blade (9) and a screw are provided on the outer ring of the stirring shaft (6). Rotary blade two (10), motor two (11) is provided on the right side of the extrusion cylinder (1), the output end of motor two (11) extends through into the interior of the extrusion cylinder (1) and is provided with a conveying rod (12), the outer ring of the conveying rod (12) is provided with conveying blades (13), the outer ring of the extrusion cylinder (1) is provided with a feeding section heating assembly (14), a melting section heating assembly (15), and a homogenization section heating assembly (16), the outer ring of the left end of the extrusion cylinder (1) is provided with a fixing frame (17), the left inner wall of the fixing frame (17) has two slots, each Each slot is equipped with a set of limiting strips (18). The left end of the extrusion cylinder (1) is equipped with an extrusion mold (19). The outer ring of the right end of the extrusion mold (19) is equipped with a fixing plate (20). The fixing plate (20) is slidably connected to the inner left wall of the fixing frame (17). The left side of the fixing plate (20) has two arc-shaped slots. The right side of each arc-shaped slot is equipped with a sliding groove. The right side of each sliding groove is equipped with a movable groove. The inside of each sliding groove is equipped with a guide rod (21). The outer ring of the top of each guide rod (21) is fitted with a spring. Spring (22), each of the guide rods (21) has a slider (23) slidably arranged on the outer ring of its bottom end, each of the sliders (23) has a connecting rod (24) on its left side, each of the connecting rods (24) has a lever (25) on its left side, each of the sliders (23) has a connecting block (26) on its right side, each of the connecting blocks (26) has a locking block (27) on its right side, each of the locking blocks (27) is slidably connected to the corresponding locking groove, and the left side of the locking block (27) is in contact with the right side of the corresponding two limiting strips (18).
2. The polyester monofilament extruder according to claim 1, characterized in that, The top of the material cylinder (3) is provided with a feed inlet (28).
3. The polyester monofilament extruder according to claim 1, characterized in that, Each scraper (8) is in contact with the inner wall of the barrel (3) on the side away from the stirring rod (7).
4. A polyester monofilament extruder according to claim 1, characterized in that, The bottom of the inner wall of the material cylinder (3) is tapered, and the outermost side of the spiral blade (9) is in contact with the tapered inner wall of the material cylinder (3).
5. A polyester monofilament extruder according to claim 1, characterized in that, The second spiral blade (10) is located inside the feed pipe (2) and is attached to it.
6. A polyester monofilament extruder according to claim 1, characterized in that, Temperature sensors (29) are provided on the top of the feeding section heating assembly (14), the melting section heating assembly (15), and the homogenization section heating assembly (16), and the detection end of each temperature sensor (29) extends into the interior of the extrusion cylinder (1).
7. A polyester monofilament extruder according to claim 1, characterized in that, The slider (23) is slidably connected to the groove, the connecting rod (24) is slidably connected to the arc-shaped groove, and the connecting block (26) is slidably connected to the movable groove.