Preparation equipment and preparation process of nylon composite material

Abstract

The invention relates to preparation equipment and a preparation process of a nylon composite material, the preparation equipment comprises a mixing mechanism, an extruding mechanism, a filtering mechanism and a pelletizing mechanism which are arranged in sequence, all the mechanisms work cooperatively, and the preparation process comprises the steps of firstly preparing raw materials, mixing, extruding, filtering, pelletizing, post-processing and the like, accurately controlling the stirring time and speed during mixing, and preparing the nylon composite material. The temperature of each section of extrusion and the rotating speed of the spiral auger are strictly controlled, non-stop impurity removal is realized by moving a filter screen during filtration, the pelletizing speed is adjusted according to the extrusion speed during pelletizing, and the drying temperature and time are strictly controlled in post-treatment. The preparation method effectively solves the problems of non-uniform mixing, difficulty in impurity removal, low pelletizing precision and the like in a traditional preparation mode, can prepare the nylon composite material with excellent comprehensive performance, and remarkably improves the product quality and the production efficiency.

Description

Technical Field

[0001] This application relates to the technical field of material preparation, and particularly to a device for preparing nylon composite materials and its preparation process. Background Art

[0002] Nylon materials, with their excellent mechanical properties, good wear resistance, and outstanding chemical corrosion resistance, etc., have been widely used in many fields such as automobile manufacturing, electronic appliances, and aerospace. However, with the continuous improvement of the material performance requirements in various industries, single nylon materials have gradually shown limitations in some properties. For example, in terms of strength, toughness, heat resistance, etc., it is difficult to meet the requirements of high-end products. To make up for these deficiencies, it has become an inevitable trend to prepare nylon composite materials with better performance.

[0003] At present, there are many problems in the traditional equipment and process for preparing nylon composite materials. In the mixing process, the existing mixing equipment has a single stirring method, making it difficult to fully and evenly mix nylon raw materials, additives, and reinforcing materials, resulting in unstable performance of the composite materials. During the extrusion process, the screw design is unreasonable, and the conveying, compression, melting, and kneading effects of the materials are poor, with low processing efficiency and also affecting the product quality. Moreover, in the traditional process, there is a lack of effective filtering means, making it difficult to remove impurities and incompletely mixed particles in the materials, resulting in defects in the final products. In addition, there are also problems such as uneven pelletizing size and low precision in the pelletizing process, affecting the subsequent application of the products. These problems severely limit the further application and development of nylon composite materials in high-end fields. Therefore, it is of great practical significance to develop a new type of device for preparing nylon composite materials and its preparation process. Summary of the Invention

[0004] This invention mainly aims at the problems of uneven mixing, low processing efficiency, unstable product performance, incomplete impurity removal, and low pelletizing precision in the preparation process of nylon composite materials in the prior art, and provides a device for preparing nylon composite materials and its preparation process to prepare nylon composite materials with excellent comprehensive performance.

[0005] The object of this invention is mainly achieved through the following solutions: On the one hand, this application provides a device for preparing nylon composite materials, including a mixing mechanism, an extrusion mechanism, a filtering mechanism, and a pelletizing mechanism arranged in sequence; The mixing mechanism includes a first support frame, a mixing tank is installed at the top inside the first support frame, a feeding component is installed on one side of the top of the mixing tank, a stirring component is installed inside the mixing tank, and a discharge port is provided on the side of the bottom of the mixing tank away from the feeding component. The first support frame is provided with a first driving component for driving the feeding component to operate and a second driving component for driving the stirring component to operate; The extrusion mechanism includes a second support frame and a first conveying cylinder. A spiral auger is rotatably connected inside the first conveying cylinder and is driven to operate by a second driving component. A receiving hopper located below the discharge port is provided on one side of the first conveying cylinder. Inside the first conveying cylinder, a conveying section, a compression section, a melting section, and a mixing section are sequentially arranged along the conveying direction of the material. The filtering mechanism includes a filtering box and a filter screen. First feeding channels penetrate through the left and right sides of the filtering box. The two ends of the first feeding channel are respectively connected to the extrusion mechanism and the granulating mechanism. Passing slots passing through the first feeding channel penetrate through the front and rear sides of the filtering box. The filter screen is inserted into the passing slots, and a feeding component and a material receiving component are respectively provided at both ends of the filter screen. The granulating mechanism includes a second conveying cylinder and an extrusion column fixed inside the second conveying cylinder. A second feeding channel is formed between the extrusion column and the inner wall of the second conveying cylinder. A circle of convex platforms is evenly arranged in a circumferential manner along the axis on the outer side wall of the end of the extrusion column away from the filtering mechanism. A forming channel is formed between the convex platforms, the outer wall of the extrusion column, and the inner wall of the second conveying cylinder. A support column is coaxially provided after the end of the extrusion column extends out of the second conveying cylinder, and a granulating component is coaxially installed on the support column.

[0006] Preferably, the feeding component includes a feeding cylinder, a feeding hopper, a first rotating shaft, and a material distributing group installed on the side wall of the first rotating shaft. The bottom of the feeding cylinder communicates with one side of the top of the mixing tank. The feeding hopper is installed on one side of the top of the feeding cylinder. The first rotating shaft is rotatably connected inside the feeding cylinder. The material distributing group includes a plurality of material distributing plates evenly arranged along the length direction of the first rotating shaft, and the plurality of material distributing plates are connected by connecting columns.

[0007] Preferably, the stirring component includes a second rotating shaft and a stirring group installed on the side wall of the second rotating shaft. The second rotating shaft is rotatably connected inside the mixing tank. The stirring group includes a plurality of first stirring rods evenly arranged along the length direction of the second rotating shaft, and the plurality of first stirring rods are connected by second stirring rods.

[0008] Preferably, the first driving assembly includes a first driving motor, a first pulley, a second pulley and a transmission belt. The output end of the first driving motor is fixedly sleeved with the first pulley. One end of the first rotating shaft passes through the side wall of the blanking cylinder and is fixedly sleeved with the second pulley. The first pulley and the second pulley are connected by the transmission belt. The second driving assembly includes a second driving motor, a third pulley, a fourth pulley, a fifth pulley, a sixth pulley, a seventh pulley, a linkage rod and a transmission belt. The output end of the second driving motor is fixedly sleeved with the third pulley. One end of the spiral auger passes through the first conveying cylinder and is fixedly sleeved with the fourth pulley. The linkage rod is rotatably connected to the first support frame, and the fifth pulley and the sixth pulley are respectively fixedly sleeved at both ends of the linkage rod. One end of the second rotating shaft passes through the side wall of the mixing tank and is fixedly sleeved with the seventh pulley. The third pulley and the fourth pulley, the third pulley and the fifth pulley, and the sixth pulley and the seventh pulley are all connected by the transmission belt.

[0009] Preferably, heating assemblies are sleeved on the outer side walls of the conveying section, the compression section, the melting section and the mixing section, and temperature sensors are installed at the conveying section, the compression section, the melting section and the mixing section.

[0010] Preferably, both the discharging assembly and the receiving assembly include a hollow mounting cylinder. An opening for the filter screen to pass through is formed in the side wall of the mounting cylinder. A winding roller is rotatably connected inside the mounting cylinder. The filter screen is wound around the side wall of the winding roller. The receiving assembly further includes a third driving motor, and the third driving motor can drive the winding roller of the receiving assembly to rotate.

[0011] Preferably, the extrusion column is sequentially provided with an enlarged section, a first stable section, a reduced section and a second stable section along the flowing direction of the material. The convex platform is located at the end of the second stable section. The inner wall of the second conveying cylinder is adapted to the shape of the extrusion column. The end face of the second stable section, the end face of the second conveying cylinder and the side face of the convex platform are located on the same horizontal plane.

[0012] Preferably, the granulating assembly includes a fourth driving motor, a tool rest and a bearing. The fourth driving motor is fixed on the second support frame, and the output end of the fourth driving motor is fixedly connected to one side of the tool rest. The other side of the tool rest is rotatably connected to the support column through the bearing. At least one side notch is provided on the side wall of the tool rest, and a granulating blade is installed in the notch. The cutting edge of the granulating blade is close to the end of the forming channel.

[0013] On the other hand, the present application provides a preparation process for a nylon composite material, including the following steps: S1. Raw material preparation: Accurately weigh nylon raw materials, various additives, and reinforcing materials according to a preset ratio, and place the weighed raw materials in corresponding storage containers for standby; S2. Mixing operation: Start the first driving component and the second driving component to make the feeding component and the stirring component start working. Add the raw materials in the storage container into the mixing tank through the feeding component. At the same time, the stirring component stirs and mixes the raw materials entering the mixing tank. The stirring time is controlled within 15 - 30 minutes, and the stirring speed is maintained at 500 - 800 revolutions per minute to ensure that various raw materials are preliminarily mixed evenly; S3. Extrusion operation: The mixed material falls into the receiving hopper through the discharge port and enters the first conveying cylinder. The second driving component drives the spiral auger to rotate, and the material is successively conveyed through the conveying section, compression section, melting section, and kneading section. The rotation speed of the spiral auger is controlled at 300 - 500 revolutions per minute to enable the material to complete conveying, compression, melting, and sufficient kneading in different stages; S4. Filtration operation: The material extruded from the extrusion mechanism enters the first feeding channel of the filter box. When the material passes through, the filter screen is used to filter the material to remove impurities and incompletely mixed particles in the material; through the cooperation of the discharging component and the receiving component, the filter screen is moved at regular intervals to ensure the filtering effect; S5. Granulation operation: The filtered material enters the second feeding channel between the second conveying cylinder and the extrusion column. When the material enters the forming channel through the second feeding channel, start the granulation component to cut the formed material to form nylon composite material particles of the required length. The granulation speed is adjusted according to the extrusion speed of the material to ensure uniform granulation, and the particle length error is controlled within ±0.5 mm; S6. Post - treatment: Collect the granulated nylon composite material particles, and perform subsequent drying treatment as needed. The drying temperature is controlled at 60 - 80 °C, and the drying time is 2 - 4 hours.

[0014] Preferably, in step S3, the temperature of the conveying section is controlled at 200 - 220 °C, the temperature of the compression section is controlled at 220 - 240 °C, the temperature of the melting section is controlled at 240 - 260 °C, and the temperature of the kneading section is controlled at 260 - 280 °C.

[0015] In summary, compared with the prior art, the present invention has the following beneficial technical effects: (1) In the present invention, the mixing mechanism is provided with a feeding component and a stirring component. The feeding assisting group assists in feeding, and the stirring group is connected by multiple rods for stirring. With the power transmission of the first driving component and the second driving component, various raw materials can be fully and evenly mixed, improving the performance stability of the composite material; (2) In the present invention, the screw auger of the extrusion mechanism, driven by the second drive assembly, in combination with the different functional designs of each section and the cooperation of the heating assembly and the temperature sensor, can efficiently complete the transportation, compression, melting and mixing of materials, improving the processing efficiency and product quality; (3) In the present invention, the filtering mechanism, through the cooperation of the feeding assembly and the receiving assembly, enables the filter screen to move continuously, can effectively remove impurities and inadequately mixed particles in the material, ensuring the purity and quality of the product, and realizes the replacement of the filter screen without stopping the machine; (4) In the present invention, the granulation mechanism, through the arranged extrusion column, the second conveying cylinder and the granulation assembly, can adjust the granulation speed according to the extrusion speed of the material, ensuring uniform granulation, and controlling the particle length error within a very small range, meeting the high-precision requirements of different products for particle size; (5) In the preparation process of the present invention, parameters such as time, speed, temperature, etc. in each link are precisely controlled, further ensuring the stability and consistency of product quality, and expanding the application range of nylon composite materials in high-end fields. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the mixing mechanism in the present invention; Figure 3 is a schematic structural diagram of the baffle in the present invention; Figure 4 is a schematic internal structure diagram of the mixing tank in the present invention; Figure 5 is a schematic structural diagram of the extrusion mechanism in the present invention; Figure 6 is a schematic internal structure diagram of the extrusion mechanism in the present invention; Figure 7 is a front view of the filtering mechanism in the present invention; Figure 8 is a schematic structural diagram of the filtering mechanism in the present invention; Figure 9 is a schematic structural diagram of the granulation mechanism in the present invention; Figure 10 is a schematic structural diagram of the tool holder in the present invention.

[0017] Reference numerals: 1 - mixing mechanism, 2 - extrusion mechanism, 3 - filtering mechanism, 4 - pelletizing mechanism, 5 - first support frame, 6 - mixing tank, 7 - discharge port, 8 - second support frame, 9 - first conveying cylinder, 10 - screw auger, 11 - receiving hopper, 12 - conveying section, 13 - compression section, 14 - melting section, 15 - kneading section, 16 - filtering box, 17 - filter screen, 18 - first material conveying channel, 19 - through slot, 20 - discharging assembly, 21 - material receiving assembly, 22 - second conveying cylinder, 23 - extrusion post, 24 - second material conveying channel, 25 - boss, 26 - forming channel, 27 - support post, 28 - blanking cylinder, 29 - blanking hopper, 30 - first rotating shaft, 31 - material stirring piece, 32 - connecting post, 33 - second rotating shaft, 34 - first stirring rod, 35 - second stirring rod, 36 - first driving motor, 37 - first pulley, 38 - second pulley, 39 - transmission belt, 40 - second driving motor, 41 - third pulley, 42 - fourth pulley, 43 - fifth pulley, 44 - sixth pulley, 45 - seventh pulley, 46 - linkage rod, 47 - heating assembly, 48 - mounting cylinder, 49 - winding roller, 50 - third driving motor, 51 - expansion section, 52 - first stable section, 53 - reduction section, 54 - second stable section, 55 - fourth driving motor, 56 - tool holder, 57 - bearing, 58 - notch, 59 - pelletizing blade. Detailed implementation manners

[0018] The technical solution of the present invention will be further specifically described below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any formal modification and / or change made to the present invention will fall within the protection scope of the present invention.

[0019] Embodiment 1: As Figure 1 shown, the present invention discloses a technical solution, a preparation device for nylon composite materials, including a mixing mechanism 1, an extrusion mechanism 2, a filtering mechanism 3, and a pelletizing mechanism 4 arranged in sequence; the mixing mechanism 1 is used for preliminarily mixing raw materials, the extrusion mechanism 2 is used for conveying, compressing, melting, and kneading the mixed materials, the filtering mechanism 3 is used for removing impurities and incompletely mixed particles in the materials, and the pelletizing mechanism 4 is used for cutting the materials into nylon composite material particles of the required length.

[0020] As Figure 2As shown, the mixing mechanism 1 includes a first support frame 5. At the top inside the first support frame 5, a mixing tank 6 is bolted or welded. At the upper right side of the top of the mixing tank 6, a feeding component is fixedly installed. A stirring component is installed inside the mixing tank 6, and at the lower left side of the bottom of the mixing tank 6, a discharge port 7 is installed. A valve is installed at the discharge port 7 to facilitate the control of material discharging. On the first support frame 5, a first driving component for driving the feeding component to operate and a second driving component for driving the stirring component to operate are provided.

[0021] As Figure 3 shown, the feeding component includes a feeding cylinder 28, a feeding hopper 29, a first rotating shaft 30, and a material distributing group installed on the side wall of the first rotating shaft 30. The bottom of the feeding cylinder 28 communicates with the upper right side of the top of the mixing tank 6. The feeding hopper 29 is bolted or welded to the rear side of the top of the feeding cylinder 28. The two ends of the first rotating shaft 30 are rotatably connected to the inside of the feeding cylinder 28 through bearings. The material distributing group includes a plurality of material distributing plates 31 uniformly arranged along the length direction of the first rotating shaft 30. The material distributing plates 31 are designed in a cross shape and are welded to the side wall of the first rotating shaft 30. And between the plurality of material distributing plates 31, they are connected by a welded connecting column 32. The first rotating shaft 30 is driven to rotate by the first driving component, and then the material distributing group is driven to feed the raw materials.

[0022] As Figure 3 shown, the stirring component includes a second rotating shaft 33 and a stirring group installed on the side wall of the second rotating shaft 33. The two ends of the second rotating shaft 33 are rotatably connected to the inside of the mixing tank 6 through bearings. The stirring group includes a plurality of first stirring rods 34 uniformly arranged along the length direction of the second rotating shaft 33. The first stirring rods 34 are perpendicularly welded to the side wall of the second rotating shaft 33. And between the plurality of first stirring rods 34, they are connected by a welded second stirring rod 35. The second rotating shaft 33 is driven to rotate by the second driving component, and then the stirring group is driven to stir and mix the raw materials.

[0023] This embodiment provides a specific structure of a first drive assembly and a second drive assembly. The first drive assembly includes a first drive motor 36, a first pulley 37, a second pulley 38, and a drive belt 39. The first drive motor 36 is fixedly installed on the side wall of the first support frame 5 by bolts. A first pulley 37 is fixedly sleeved on the output end of the first drive motor 36. The right end of the first rotating shaft 30 passes through the side wall of the blanking cylinder 28 and is fixedly sleeved with a second pulley 38. The first pulley 37 and the second pulley 38 are connected by a drive belt 39. The second drive assembly includes a second drive motor 40, a third pulley 41, a fourth pulley 42, a fifth pulley 43, a sixth pulley 44, a seventh pulley 45, a linkage rod 46, and a drive belt 39. The second drive motor 40 is fixedly installed on the bottom of the first support frame 5 by bolts. A third pulley 41 is fixedly sleeved on the output end of the second drive motor 40. Two circles of grooves for installing the drive belt 39 are provided on the side wall of the third pulley 41. The right end of the screw auger 10 passes through the first conveying cylinder 9 and is fixedly sleeved with a fourth pulley 42. Both ends of the linkage rod 46 are rotatably connected to the first support frame 5 through bearing seats, and a fifth pulley 43 and a sixth pulley 44 are respectively fixedly sleeved on both ends of the linkage rod 46. The right end of the second rotating shaft 33 passes through the side wall of the mixing tank 6 and is fixedly sleeved with a seventh pulley 45. The third pulley 41 and the fourth pulley 42, the third pulley 41 and the fifth pulley 43, and the sixth pulley 44 and the seventh pulley 45 are all connected by a drive belt 39. Both the first drive assembly and the second drive assembly use pulleys and drive belts for transmission, with simple structures and stable transmission.

[0024] As Figure 5 , 6 shown, the extrusion mechanism 2 includes a second support frame 8 and a first conveying cylinder 9. The first conveying cylinder 9 is fixedly installed on the second support frame 8 by bolts. A screw auger 10 is rotatably connected in the first conveying cylinder 9 through a bearing, and the screw auger 10 is driven to operate by the second drive assembly. A receiving hopper 11 located below the discharge port 7 is welded to the upper right side of the first conveying cylinder 9. The diameter of the body of the screw auger 10 gradually increases along the flow direction of the material. The inside of the first conveying cylinder 9 is sequentially set as a conveying section 12, a compression section 13, a melting section 14, and a mixing section 15 along the conveying direction of the material. Heating components 47 are sleeved on the outer side walls of each section, and temperature sensors are installed. The heating components 47 can adopt electric heating sleeves. The specific structures and working principles of the electric heating sleeves and the temperature sensors are all prior arts and will not be elaborated here.

[0025] As Figure 7 , 8As shown in the figure, the filtering mechanism 3 includes a filtering box 16 and a filter screen 17. In the middle of the left and right sides of the filtering box 16, there is a circular first material conveying channel 18 running through. The two ends of the first material conveying channel 18 are respectively connected to the extrusion mechanism 2 and the granulating mechanism 4. Moreover, both the extrusion mechanism 2 and the granulating mechanism 4 are detachably and fixedly connected to the side wall of the filtering box 16 through bolts. In the front and back sides of the filtering box 16, there is a through slot 19 passing through the first material conveying channel 18. The height of the through slot 19 should not be less than the diameter of the first material conveying channel 18 to ensure that the filter screen 17 completely covers the first material conveying channel 18. The filter screen 17 is inserted into the through slot 19, and feeding components 20 and a material collecting component 21 are respectively arranged at both ends of the filter screen 17. Feeding and material collection are carried out through the feeding component and the material collecting component to ensure the continuous use and filtering effect of the filter screen.

[0026] This embodiment provides a specific structure of the feeding component 20 and the material collecting component 21. Both the feeding component 20 and the material collecting component 21 include a cylindrical installation cylinder 48 with a hollow interior. A vertical opening for the filter screen 17 to pass through is provided on the side wall of the installation cylinder 48. Moreover, a winding roller 49 is vertically rotatably connected inside the installation cylinder 48. Both ends of the filter screen 17 are respectively wound around the side walls of the two winding rollers 49. In addition, the material collecting component 21 further includes a third driving motor 50, and the third driving motor 50 can drive the winding roller 49 of the material collecting component 21 to rotate, thereby realizing the movement of the filter screen 17.

[0027] As Figure 9 shown in the figure, the granulating mechanism 4 includes a second conveying cylinder 22 and an extrusion column 23 fixed inside the second conveying cylinder 22. The extrusion column 23 is successively provided with an expansion section 51, a first stable section 52, a reduction section 53, and a second stable section 54 along the flowing direction of the material. The expansion section 51 has a conical structure, the first stable section 52 and the second stable section 54 have a cylindrical structure, and the reduction section 53 has a frustum-shaped structure. The side wall of the first stable section 52 is fixedly connected to the second conveying cylinder 22 through a fixed column. Moreover, a convex platform 25 is located at the end of the second stable section 54. The inner wall of the second conveying cylinder 22 is adapted to the shape of the extrusion column 23, and a second material conveying channel 24 is formed between the extrusion column 23 and the inner wall of the second conveying cylinder 22 to realize the stable conveying and shaping of the material. Moreover, a circle of convex platforms 25 is evenly arranged in a circumferential direction along the axis on the outer side wall of the end of the extrusion column 23 far away from the filtering mechanism 3. In this embodiment, the convex platform 25 gradually inclines downward along the flowing direction of the material. A forming channel 26 is formed among the convex platform 25, the outer wall of the extrusion column 23, and the inner wall of the second conveying cylinder 22. The end face of the second stable section 54, the end face of the second conveying cylinder 22, and the side face of the convex platform 25 are located on the same horizontal plane to ensure the stable shape of the material after extrusion. After the end of the extrusion column 23 extends out of the second conveying cylinder 22, a support column 27 is coaxially arranged, and a granulating component is coaxially installed on the support column 27.

[0028] In this embodiment, a specific structure of a pelletizing assembly is provided. The pelletizing assembly includes a fourth driving motor 55, a tool rest 56, and a bearing 57. The fourth driving motor 55 is fixed to the second support frame 8 by bolts, and the output end of the fourth driving motor 55 is fixedly connected to the left side of the tool rest 56 through a coupling. The right side inside of the tool rest 56 is rotatably connected to the support column 27 through the bearing 57. At least one side notch 58 is provided on the side wall of the tool rest 56, and a pelletizing blade 59 is detachably and fixedly installed in the notch 58 by bolts. The cutting edge of the pelletizing blade 59 is closely attached to the outlet of the forming channel 26. In this embodiment, the fourth driving motor 55 can drive the tool rest 56 and the pelletizing blade 59 to rotate counterclockwise to achieve precise and efficient pelletizing of the pelletizing assembly. A cooling fan can be installed at the outlet of the forming channel 26 according to the actual situation to increase the cooling effect of the finished product and facilitate pelletizing. A receiving member located below the outlet of the forming channel 26 should be installed on the second support frame to facilitate the collection of the pelletized nylon composite material particles.

[0029] Embodiment 2: This application also provides a preparation process for a nylon composite material, including the following steps: S1. Raw material preparation: Accurately weigh nylon raw materials, various additives, and reinforcing materials according to a preset ratio, and place the weighed raw materials in corresponding storage containers for standby; S2. Mixing operation: Start the first driving assembly and the second driving assembly to make the feeding assembly and the stirring assembly start working. Add the raw materials in the storage containers into the mixing tank 6 through the feeding assembly. At the same time, the stirring assembly stirs and mixes the raw materials entering the mixing tank 6. The stirring time is controlled within 15 - 30 minutes, and the stirring speed is maintained at 500 - 800 revolutions per minute to ensure that various raw materials are preliminarily mixed evenly; S3. Extrusion operation: The mixed material falls into the receiving hopper 11 through the discharge port 7 and enters the first conveying cylinder 9. The second driving assembly drives the spiral auger 10 to rotate, and conveys the material through the conveying section 12, the compression section 13, the melting section 14, and the kneading section 15 in sequence. The temperature of the conveying section 12 is controlled at 200 - 220 °C, the temperature of the compression section 13 is controlled at 220 - 240 °C, the temperature of the melting section 14 is controlled at 240 - 260 °C, and the temperature of the kneading section 15 is controlled at 260 - 280 °C. The rotation speed of the spiral auger 10 is controlled at 300 - 500 revolutions per minute to enable the material to complete conveying, compression, melting, and sufficient kneading in different stages; S4. Filtration operation: The material extruded from the extrusion mechanism 2 enters the first feeding channel 18 of the filter box 16. When the material passes through, the filter screen 17 is used to filter the material to remove impurities and insufficiently mixed particles in the material; through the cooperation of the discharging assembly 20 and the receiving assembly 21, the filter screen 17 is moved at regular intervals to ensure the filtering effect; S5. Pelletizing operation: The filtered material enters the second material conveying channel 24 between the second conveying cylinder 22 and the extrusion column 23. When the material enters the forming channel 26 through the second material conveying channel 24, start the pelletizing assembly to cut the formed material, forming nylon composite material pellets with the required length. The pelletizing speed is adjusted according to the extrusion speed of the material to ensure uniform pelletizing, and the error of the pellet length is controlled within ±0.5 mm. S6. Post-treatment: Collect the pelletized nylon composite material pellets and perform subsequent drying treatment as needed. The drying temperature is controlled at 60 - 80 °C, and the drying time is 2 - 4 hours.

[0030] Example 3: This application also provides a preparation process for nylon composite materials, which is different from that of Example 2 and includes the following steps: S1. Raw material preparation: Accurately weigh 80 kg of nylon 6 raw material, 15 kg of glass fiber, 1 kg of antioxidant, and 4 kg of toughening agent. Place these raw materials in special storage containers respectively, ensuring that the storage environment is dry and clean to avoid moisture absorption of the raw materials or mixing with other impurities, which may affect the subsequent preparation effect. S2. Mixing operation: Turn on the first driving assembly and the second driving assembly. The first driving motor 36 starts. Through the transmission of the first pulley 37, the second pulley 38, and the transmission belt 39, drive the first rotating shaft 30 to rotate at a high speed. The feeding group installed on the first rotating shaft 30 is composed of multiple feeding blades 31 connected by connecting columns 32. During rotation, the raw materials in the storage container are sent from the feeding hopper 29 through the feeding cylinder 28 into the mixing tank 6. At the same time, the second driving motor 40 operates. Through the linkage of the third pulley 41, the fourth pulley 42, the fifth pulley 43, the sixth pulley 44, the seventh pulley 45, the linkage rod 46, and the transmission belt 39, drive the second rotating shaft 33 to rotate. The stirring group on the second rotating shaft 33 is composed of multiple first stirring rods 34 connected by second stirring rods 35 to stir and mix the raw materials entering the mixing tank 6. The stirring time this time is set to 20 minutes, and the stirring speed is maintained at 600 revolutions per minute to ensure that all raw materials are in full contact and preliminarily mixed evenly. S3. Extrusion operation: The uniformly mixed material falls from the discharge port 7 at the bottom of the mixing tank 6 into the receiving hopper 11, and then enters the first conveying cylinder 9. The second driving assembly continues to work, driving the spiral auger 10 to rotate, and pushing the material through the conveying section 12, compression section 13, melting section 14, and kneading section 15 in sequence. In the conveying section 12, the temperature is controlled at 210 °C, which is mainly responsible for smoothly conveying the material. The temperature of the compression section 13 is set at 230 °C to compress the material and increase its density. The temperature of the melting section 14 rises to 250 °C to completely melt the material. The temperature of the kneading section 15 is maintained at 270 °C to further fully knead the molten material to ensure the material is uniform. The rotation speed of the spiral auger 10 is controlled at 400 revolutions per minute to ensure that the material can successfully complete the corresponding processing steps at each stage; S4. Filtration operation: The molten material extruded from the extrusion mechanism 2 enters the first feeding channel 18 of the filter box 16. The third driving motor 50 in the material receiving assembly 21 starts intermittently, driving the winding roller 49 to rotate, and winding up the filter net 17 wound thereon. At the same time, the winding roller 49 of the material feeding assembly 20 rotates synchronously to realize the continuous movement of the filter net 17. When the material passes through the first feeding channel 18, the filter net 17 filters the material, effectively removing impurities and incompletely mixed particles therein. Every 45 minutes, the filter net 17 is replaced by starting the third driving motor 50 to ensure that the filtering effect always remains in good condition; S5. Pelletizing operation: The filtered material enters the second feeding channel 24 between the second conveying cylinder 22 and the extrusion column 23. When the material passes through the enlarged section 51 on the extrusion column 23, it gradually adapts to the channel change and enters the first stable section 52, where the material is smoothly conveyed. After passing through the reduced section 53, the material is further extruded. In the second stable section 54, after the material state is stable, it enters the forming channel 26. At this time, the fourth driving motor 55 is started to drive the tool holder 56 to rotate around the support column 27, and the pelletizing blade 59 on the tool holder 56 cuts the formed material to form nylon composite material pellets. The pelletizing speed is adjusted in real time according to the extrusion speed of the material to ensure uniform pelletizing, and the particle length error is strictly controlled within ±0.5 mm; S6. Post-treatment: The pelletized nylon composite material pellets are collected and placed in a drying device for drying treatment. The drying temperature is controlled at 70 °C, and the drying time is 3 hours to remove the moisture in the pellets. After drying, packaging is carried out in a dry and clean environment, using a sealed packaging material to prevent the pellets from being affected by moisture and secondary contamination, ensuring the stability of product quality.

[0031] Example 4: The present application also provides a preparation process for nylon composite materials, which is different from that of Example 2 and includes the following steps: S1. Raw material preparation: Weigh 75 kg of nylon 66 raw material, 18 kg of carbon fiber, 1.5 kg of antioxidant, and 5.5 kg of toughening agent, and place them in corresponding storage containers respectively. S2. Mixing operation: Start the first driving component and the second driving component. The first driving motor 36 drives the first rotating shaft 30, so that the material feeding group evenly feeds the raw materials into the mixing tank 6. At the same time, the second driving motor 40 drives the second rotating shaft 33, and the stirring group stirs the raw materials. The stirring time is set to 25 minutes, and the stirring speed is 700 revolutions per minute. S3. Extrusion operation: The mixed material enters the receiving hopper 11 through the discharge port 7, and then enters the first conveying cylinder 9. The second driving component drives the spiral auger 10 to rotate. The material passes through the conveying section (temperature set at 205 °C), the compression section (temperature set at 225 °C), the melting section (temperature set at 245 °C), and the mixing section (temperature set at 265 °C) in sequence. The rotation speed of the spiral auger 10 is controlled at 400 revolutions per minute. S4. Filtration operation: The extruded material enters the first feeding channel 18 of the filter box 16. The discharging component and the receiving component work together to continuously move the filter screen to filter the material. Every 45 minutes, the filter screen 17 is replaced by the third driving motor 50. S5. Pelletizing operation: The filtered material enters the second feeding channel 24, and is extruded and formed through the expansion section 51, the first stable section 52, the reduction section 53, and the second stable section 54. When the material enters the forming channel 26, start the fourth driving motor 55 to drive the tool holder 56 to rotate, and the pelletizing blade 59 cuts off the material. Adjust the pelletizing speed according to the extrusion speed of the material to ensure that the error of the pellet length is within ±0.5 mm. S6. Post-treatment: Collect the pellets after pelletizing, dry them at 70 °C for 3 hours, and then package them in a dry and clean environment.

[0032] Example 5: The present application also provides a preparation process for a nylon composite material, which is different from that of Example 2 in that it includes the following steps: S1. Raw material preparation: Prepare 85 kg of nylon 1010 raw material, 10 kg of glass microspheres, 0.8 kg of antioxidant, and 4.2 kg of toughening agent, and store them in corresponding containers respectively. S2. Mixing operation: Start the first driving component and the second driving component. The feeding component evenly feeds the raw materials into the mixing tank 6, and the stirring component stirs. The stirring time is 18 minutes, and the stirring speed is 550 revolutions per minute. S3. Extrusion operation: The evenly mixed material enters the first conveying cylinder 9, and passes through the conveying section (210 °C), the compression section (230 °C), the melting section (250 °C), and the mixing section (270 °C). The rotation speed of the spiral auger is 350 revolutions per minute. S4. Filtration operation: The extruded material enters the first feeding channel 18 of the filtration box 16. The discharging assembly and the material receiving assembly work together to continuously move the filter screen 17 to filter the material. Every 35 minutes, the filter screen 17 is replaced by the third driving motor 50. S5. Pelletizing operation: The filtered material enters the second feeding channel 24 and is extruded and formed through the expansion section 51, the first stable section 52, the reduction section 53 and the second stable section 54. When the material enters the forming channel 26, the fourth driving motor 55 is started to drive the tool holder 56 to rotate, and the pelletizing blade 59 cuts off the material. The pelletizing speed is adjusted according to the extrusion speed of the material to ensure that the error of the pellet length is within ±0.5 mm. S6. Post-treatment: The pellets after pelletizing are collected and dried at 65°C for 2.5 hours, and then packaged in a dry and clean environment.

[0033] This application should be equipped with a PLC controller or an industrial control computer. Each electrical component is electrically connected to the PLC controller or the industrial control computer and is controlled by it. The specific principle and circuit connection method are not within the protection scope of this application, and those skilled in the art can obtain them through conventional means, so they will not be elaborated here.

[0034] A nylon composite material preparation device and its preparation process provided by this application realize the efficient production of nylon composite material pellets with high uniformity and low impurity content through the multi-stage stirring of the mixing mechanism, the segmented temperature control of the extrusion mechanism, the continuous screen changing of the filtration mechanism and the flow rate balance design of the pelletizing channel, and have significant economic benefits.

[0035] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A preparation device for a nylon composite material, characterized in that: It comprises a mixing mechanism (1), an extrusion mechanism (2), a filtering mechanism (3) and a pelletizing mechanism (4) which are arranged in sequence; The mixing mechanism (1) comprises a first support frame (5), a mixing tank (6) is installed on the top of the first support frame (5), a feeding assembly is installed on one side of the top of the mixing tank (6), a stirring assembly is installed in the mixing tank (6), and a discharge port (7) is provided on the side of the bottom of the mixing tank (6) away from the feeding assembly, and a first driving assembly for driving the feeding assembly to operate and a second driving assembly for driving the stirring assembly to operate are provided on the first support frame (5); The extrusion mechanism (2) comprises a second support frame (8) and a first conveying cylinder (9); a spiral auger (10) is rotatably connected inside the first conveying cylinder (9), and the spiral auger (10) is driven to operate by a second driving assembly; a receiving hopper (11) is provided on one side of the first conveying cylinder (9) and is located below the discharge port (7); a conveying section (12), a compression section (13), a melting section (14) and a mixing section (15) are provided in the first conveying cylinder (9) in sequence along the conveying direction of the material; The filtering mechanism (3) comprises a filtering box (16) and a filtering screen (17); a first feeding channel (18) is provided on the left and right sides of the filtering box (16); two ends of the first feeding channel (18) are respectively connected to the extrusion mechanism (2) and the pelletizing mechanism (4); a passing groove (19) passing through the first feeding channel (18) is provided on the front and rear sides of the filtering box (16); the filtering screen (17) is inserted into the passing groove (19); and a material discharging component (20) and a material receiving component (21) are respectively provided on the two ends of the filtering screen (17); The pelletizing mechanism (4) comprises a second conveying cylinder (22) and an extrusion column (23) fixedly arranged in the second conveying cylinder (22); a second material conveying channel (24) is formed between the extrusion column (23) and the inner wall of the second conveying cylinder (22); and a circle of bosses (25) are uniformly arranged along the circumference of the axis of the outer wall of the end of the extrusion column (23) away from the filtering mechanism (3); a forming channel (26) is formed between the bosses (25), the outer wall of the extrusion column (23) and the inner wall of the second conveying cylinder (22); and a support column (27) is coaxially arranged after the end of the extrusion column (23) protrudes out of the second conveying cylinder (22); and a pelletizing assembly is coaxially mounted on the support column (27).

2. The preparation equipment of a nylon composite material according to claim 1, characterized in that: The material discharge assembly comprises a material discharge barrel (28), a material discharge hopper (29), a first rotating shaft (30), and a material shifting group installed on the side wall of the first rotating shaft (30); the bottom of the material discharge barrel (28) is connected to the top side of the mixing tank (6); the material discharge hopper (29) is installed on the top side of the material discharge barrel (28); the first rotating shaft (30) is rotatably connected to the inside of the material discharge barrel (28); and the material shifting group comprises a plurality of material shifting pieces (31) uniformly arranged along the length direction of the first rotating shaft (30), and the plurality of material shifting pieces (31) are connected by connecting columns (32).

3. The preparation equipment of a nylon composite material according to claim 2, characterized in that: The stirring assembly comprises a second rotating shaft (33) and a stirring group mounted on a side wall of the second rotating shaft (33); the second rotating shaft (33) is rotatably connected to a mixing tank (6); the stirring group comprises a plurality of first stirring rods (34) uniformly arranged along a length direction of the second rotating shaft (33); and the plurality of first stirring rods (34) are connected via second stirring rods (35).

4. The preparation equipment of a nylon composite material according to claim 3, characterized in that: The first driving assembly comprises a first driving motor (36), a first pulley (37), a second pulley (38) and a transmission belt (39); the output end of the first driving motor (36) is fixedly sleeved with the first pulley (37); one end of the first rotating shaft (30) passes through the side wall fixed sleeve of the unloading barrel (28) and is provided with a second pulley (38); the first pulley (37) and the second pulley (38) are connected via a transmission belt (39); the second driving assembly comprises a second driving motor (40), a third pulley (41), a fourth pulley (42), a fifth pulley (43), a sixth pulley (44), a seventh pulley (45), a linkage rod (46) and a transmission belt (39); the first The output end of the second driving motor (40) is fixedly sleeved with a third pulley (41); one end of the spiral auger (10) passes through the first conveying cylinder (9) and is fixedly sleeved with a fourth pulley (42); the linkage rod (46) is rotatably connected to the first support frame (5); a fifth pulley (43) and a sixth pulley (44) are respectively fixedly sleeved at both ends of the linkage rod (46); one end of the second rotating shaft (33) passes through the side wall of the mixing tank (6) and is fixedly sleeved with a seventh pulley (45); the third pulley (41) and the fourth pulley (42), the third pulley (41) and the fifth pulley (43), and the sixth pulley (44) and the seventh pulley (45) are all connected via a transmission belt (39).

5. The preparation equipment of a nylon composite material according to claim 1, characterized in that: The outer side walls of the conveying section (12), the compression section (13), the melting section (14) and the mixing section (15) are all sleeved with a heating assembly (47), and the conveying section (12), the compression section (13), the melting section (14) and the mixing section (15) are all installed with temperature sensors.

6. The preparation equipment of a nylon composite material according to claim 1, characterized in that: The material discharging assembly (20) and the material receiving assembly (21) both comprise a mounting cylinder (48) with a hollow interior, the side wall of the mounting cylinder (48) being provided with an opening for the filter screen (17) to pass through, and a winding roller (49) being rotatably connected inside the mounting cylinder (48), the filter screen (17) being wound around the side wall of the winding roller (49), and the material receiving assembly (21) further comprising a third drive motor (50), the third drive motor (50) being capable of driving the winding roller (49) of the material receiving assembly (21) to rotate.

7. The preparation equipment of a nylon composite material according to claim 1, characterized in that: The extrusion column (23) is provided with an expansion section (51), a first stable section (52), a reduction section (53) and a second stable section (54) in sequence along the flow direction of the material, and the boss (25) is located at the end of the second stable section (54), the inner wall of the second conveying cylinder (22) is adapted to the shape of the extrusion column (23), and the end surface of the second stable section (54), the end surface of the second conveying cylinder (22) and the side surface of the boss (25) are located in the same horizontal plane.

8. The preparation equipment of a nylon composite material according to claim 7, characterized in that: The pelletizing assembly comprises a fourth drive motor (55), a knife holder (56) and a bearing (57); the fourth drive motor (55) is fixed on the second support frame (8); the output end of the fourth drive motor (55) is fixedly connected to one side of the knife holder (56); the other side of the knife holder (56) is rotatably connected to the support column (27) via the bearing (57); the side wall of the knife holder (56) is provided with at least one side notch (58); a pelletizing blade (59) is installed in the notch (58); the blade of the pelletizing blade (59) is close to the end of the forming channel (26).

9. A process for preparing the nylon composite material according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Raw material preparation: Accurately weigh nylon raw materials, various additives and reinforcing materials according to the preset proportions, and place the weighed raw materials in corresponding storage containers for standby use; S2, mixing operation: start the first driving assembly and the second driving assembly, so that the feeding assembly and the stirring assembly start working, and the raw materials in the storage container are added to the mixing tank (6) through the feeding assembly. At the same time, the stirring assembly stirs and mixes the raw materials entering the mixing tank (6), and the stirring time is controlled to be 15-30 minutes, and the stirring speed is maintained at 500-800 rpm to ensure that the various raw materials are initially mixed evenly; S3, extrusion operation: the mixed material falls into the receiving hopper (11) through the discharge port (7) and enters the first conveying cylinder (9). The second driving assembly drives the spiral auger (10) to rotate, and the material is conveyed through the conveying section (12), the compression section (13), the melting section (14) and the mixing section (15) in sequence. The rotation speed of the spiral auger (10) is controlled at 300-500 rpm, so that the material can be conveyed, compressed, melted and fully mixed at different stages. S4, filtering operation: the material extruded from the extrusion mechanism (2) enters the first feeding channel (18) of the filter box (16), and when the material passes through, the filter screen (17) is used to filter the material to remove impurities and incompletely mixed particles in the material; the discharge component (20) and the receiving component (21) cooperate to make the filter screen (17) move once every other time to ensure the filtering effect; S5, pelletizing operation: the filtered material enters the second conveying channel (24) between the second conveying cylinder (22) and the extrusion column (23). When the material enters the forming channel (26) through the second conveying channel (24), the pelletizing component is started to cut the formed material to form nylon composite material particles of a required length. The pelletizing speed is adjusted according to the extrusion speed of the material to ensure uniform pelletizing and control the particle length error within ±0.5 mm. S6. Post-processing: Collect the pelletized nylon composite material particles and perform subsequent drying treatment as needed. The drying temperature is controlled at 60-80°C and the drying time is 2-4 hours.

10. The process for preparing a nylon composite material according to claim 9, characterized in that: In step S3, the temperature of the conveying section (12) is controlled at 200-220°C, the temperature of the compression section (13) is controlled at 220-240°C, the temperature of the melting section (14) is controlled at 240-260°C, and the temperature of the mixing section (15) is controlled at 260-280°C.

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