Preparation process of high-strength modified engineering plastic

Abstract

The invention discloses a preparation process of high-strength modified engineering plastic, and relates to the technical field of engineering plastic preparation, and the preparation process specifically comprises the following steps: step 1, blending modification: adding matrix resin, a reinforcing material and an auxiliary agent into a charging barrel according to a formula proportion, and uniformly stirring; materials are stirred and mixed evenly through rotation of a first stirring rod, a fixing frame and a second stirring rod, all components are fully dispersed, the mixed materials are added into an injection molding machine body, and the materials are heated and melted through a heating system of the injection molding machine body so that the materials can reach the flowing state needed by injection molding; step 2, forming processing; and step 3, post-processing. According to the preparation process of the high-strength modified engineering plastic, the first stirring rod is used for stirring at a fixed position, and the fixed frame and the second stirring rod can rotate while revolving and stirring around the first stirring rod, so that local agglomeration and layering phenomena in materials can be effectively broken, and the materials are fully mixed in the stirring space; and the stirring uniformity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering plastic preparation, in particular to a preparation process of high-strength modified engineering plastic. Background Art

[0002] In today's rapidly developing industrial landscape, high-strength modified engineering plastics have been widely used in aerospace, automotive, electronics, medical devices, and other fields due to their excellent mechanical properties, heat resistance, chemical corrosion resistance, and processability. To meet the diverse performance requirements of high-strength modified engineering plastics in different application scenarios, their preparation processes are also constantly evolving and improving. At present, the preparation of high-strength modified engineering plastics usually involves key steps such as mixing of multiple raw materials, addition of modifiers, and melt blending. In the raw material mixing stage, stirring technology is one of the core factors affecting the uniformity of material mixing and the performance of the final product. In the existing technology, the more common stirring method mostly uses a single form of stirring rod for stirring operation. For example, some processes use a first stirring rod at a fixed position to perform preliminary mixing of various raw materials. The stirring rod is continuously rotated at a fixed point to form a certain flow area around the stirring rod to achieve preliminary contact and mixing between different raw materials. On this basis, some processes further use a fixed frame to drive the second stirring rod to revolve around the first stirring rod for stirring, while the second stirring rod itself rotates. This composite motion stirring method combining revolution and rotation increases the complexity of the force acting on the material in the stirring area to a certain extent, so that the material can be stirred in different directions and angles, which helps to break the local agglomeration and stratification in the material and improve the mixing uniformity of the material in the stirring space. Although the existing revolution and rotation composite stirring method has been significantly improved compared to the single stirring method, in the actual production process, the mixing uniformity is still not ideal for the high-precision mixing requirements required for the preparation of high-strength modified engineering plastics. High-strength modified engineering plastics are usually composed of a variety of raw materials and modifiers with different properties and particle sizes. These materials are prone to uneven distribution during the stirring process due to differences in physical properties. The existing stirring method is difficult to fully reach all levels inside the material, especially for some high-viscosity and high-density raw material systems, which are prone to local agglomeration and stirring dead corners inside the material. The existing stirring method takes a long time to achieve uniform stirring, and the stirring efficiency needs to be improved. Although the combination of revolution and rotation increases the contact frequency and relative movement speed of the stirring component and the material, the movement trajectory and range of action of the stirring component are relatively limited. The revolution enables the stirring component to cover the material in a larger range, but the rotation only enhances the shearing and mixing effect of the stirring component on the surrounding local material. For materials far away from the direct action area of the stirring component, the stirring effect is weak. When processing large amounts of materials or high-viscosity materials, the internal friction between the materials is large, and the stirring component is difficult to quickly and effectively transmit the stirring action to the entire stirring area, resulting in prolonged stirring time and reduced production efficiency. This not only increases production costs, but also makes it difficult to meet the needs of large-scale industrial production for efficient production. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a preparation process for high-strength modified engineering plastics, which solves the technical problems mentioned in the background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A preparation process of high-strength modified engineering plastics, specifically comprising the following steps: Step 1: Blending modification: The base resin, reinforcing material and additives are added into the barrel according to the formula ratio. The materials are stirred and mixed evenly by the rotation of the first stirring rod, the fixed frame and the second stirring rod to fully disperse the components. The mixed materials are added into the injection molding machine body. The materials are heated and melted by the heating system of the injection molding machine body to achieve the flow state required for injection molding. Step 2: Molding process; Subsequently, the molten material is injected into a preset mold cavity under the push of the screw of the injection molding machine body. The mold cavity has a surface corresponding to the shape of the desired product. In the mold cavity, the material cools and solidifies to form a high-strength modified engineering plastic product. Finally, the mold is opened and the product is removed, completing the entire preparation process and obtaining modified engineering plastic particles. Step 3: Post-processing: The formed products are heat treated to eliminate internal stress and improve the dimensional stability and mechanical properties of the products.

[0005] As a further preferred embodiment of the present technical solution, the barrel is fixedly mounted on the injection molding machine body, and the barrel is connected to the injection molding machine body through a discharge pipe, and a stirring assembly is provided inside the barrel; A fixed plate is fixedly connected to the top of the inner cavity of the stirring assembly, a servo motor is fixedly installed on the top of the fixed plate, the output end of the servo motor is fixedly connected to a rotating shaft, the bottom of the rotating shaft is fixedly connected to a first stirring rod, cross bars are fixedly connected on both sides of the bottom end of the rotating shaft, the other end of the cross bar is rotatably connected to a sleeve rod, a spline rod is provided on the sleeve rod, and a connecting rod is fixedly connected to the bottom of the spline rod, and three groups of fixed frames are provided on the outer wall of the connecting rod in a circular array, a scraper is provided on the side of the fixed frame close to the inner wall of the barrel, and a row of second stirring rods is provided on the inner end of the fixed frame.

[0006] As a further preferred embodiment of the present technical solution, the outer wall of the rotating shaft is provided with a vertical rod fixedly mounted on the bottom of the fixed plate. The vertical rod is slidably connected to a connecting plate in the vertical direction, and a large fixed gear and a small fixed gear are fixedly connected to the bottom of the connecting plate.

[0007] As a further optimization of the present technical solution, a first support plate and a second support plate fixedly installed on the bottom of the fixed plate are provided on both sides of the top of the connecting plate, a driving motor is fixedly installed on the bottom end of the first support plate, and a toggle rod and a lifting rod are fixedly connected to the output end of the servo motor, and the toggle rod and the lifting rod are staggered.

[0008] As a further preference of the present technical solution, a rectangular block is fixedly connected to the surface of the second support plate, and a lifting plate is slidably connected to the outside of the rectangular block. The bottom of the lifting plate is fixedly connected to the connecting plate, and the lifting plate is fixedly connected to the first protrusion and the second protrusion on the side close to the first support plate, and the positions of the first protrusion and the lifting rod correspond to each other. The lifting plate is fixedly connected to the third protrusion on one side of the first support plate, and the second support plate is rotatably connected to the side close to the first support plate. The outer wall of the movable shaft is fixedly connected to a blocking block and an extension rod, and the positions of the blocking block and the second protrusion correspond to each other, the positions of the extension rod and the toggle rod correspond to each other, and a damping spring is arranged between the extension rod and the second support plate, and the second support plate is fixedly connected to the limiting rod on the side away from the first support plate, and the position of the limiting rod corresponds to the position of the third protrusion.

[0009] As a further optimization of the present technical solution, a small rotating gear and a large rotating gear are fixedly connected to the outer wall of the sleeve rod, the large fixed gear is meshed with the small rotating gear, and the small fixed gear is meshed with the large rotating gear.

[0010] As a further preference of the present technical solution, the side wall of the connecting rod is rotatably connected to a mounting shaft, one end of the mounting shaft is fixedly connected to the second stirring rod, and the other end is fixedly connected to the second bevel gear. The inner cavity of the connecting rod is rotatably connected to a rotating rod, and the rotating rod is fixedly connected to a first bevel gear that meshes with the second bevel gear. The bottom of the rotating rod is fixedly connected to a driven gear, and the outer side of the driven gear is meshed with a gear ring, and the gear ring is fixedly installed on the inner cavity of the barrel.

[0011] As a further optimization of the present technical solution, a fixed ring is fixedly connected to the bottom end of the fixed plate, a reciprocating part is fixedly connected to the outer wall of the fixed ring, a circular groove is provided at the beginning of the outer wall of the reciprocating part, a movable seat is slidably connected to the circular groove through a slider, a connecting column is slidably connected to the movable seat, the bottom of the connecting column is rotatably connected to the spline rod, and the side wall of the connecting column is fixedly connected to a guide rod that is slidably adapted to the reciprocating part.

[0012] Compared with the existing technology, it has the following beneficial effects: The first stirring rod stirs at a fixed position, providing preliminary mixing for the material. The fixed frame and second stirring rod simultaneously rotate around the first stirring rod while stirring. This combined motion allows the material at different locations within the stirring area to be subjected to forces from different directions and angles, effectively breaking up localized agglomeration and stratification within the material, ensuring thorough mixing within the stirring space and improving stirring uniformity. The combination of revolution and rotation increases the contact frequency and relative movement speed between the stirring element and the material. Revolution allows the stirring element to cover the material over a larger area, while rotation further enhances the shearing and mixing effect of the stirring element on the surrounding material, significantly shortening the time required to achieve uniform mixing and improving stirring efficiency. This stirring method exhibits good adaptability for materials of varying viscosities and particle sizes. For high-viscosity materials, the shear force generated by revolution and rotation effectively overcomes the material's internal friction, promoting material flow and mixing. For materials containing large particles, the rotating stirring element can better break up and disperse the large particles, while revolution ensures overall material uniformity.

[0013] By adding horizontal rotation stirring on the basis of revolution and rotation, the second stirring rod can act more deeply into the material. This multi-directional movement allows the stirring to reach different levels of the material, breaking up the local agglomeration and dead corners that may exist in the material, so that the material is fully mixed in three-dimensional space, especially for high-viscosity and high-density materials, which can significantly improve the depth and uniformity of stirring; revolution makes the stirring range cover the entire stirring area, rotation increases the local stirring intensity, and horizontal rotation stirring further expands the range of action of the stirring rod on the material, ensuring that every corner in the stirring area can be stirred, avoiding stirring blind spots, and achieving all-round, dead-angle-free stirring; the combined effect of multiple stirring methods makes the first stirring rod, the second stirring rod and the material more closely connected. For more complex and frequent movements, the revolution, rotation and horizontal rotation stirring cooperate with each other, greatly increasing the shearing, squeezing and mixing effects of the first stirring rod and the second stirring rod on the material, thereby accelerating the flow and mixing process of the material, shortening the time required to achieve uniform stirring, significantly improving the stirring efficiency and reducing energy consumption; for low-viscosity materials, revolution and horizontal rotation stirring can quickly disperse them, and rotation can further refine the stirring effect; for high-viscosity materials, the synergistic effect of multiple stirring methods can overcome the high internal friction of the material, making the material easier to flow and mix, ensuring that materials of different viscosities can obtain good stirring effects; the multi-directional rotation stirring of the second stirring rod can enhance the interface contact and interaction between different phases, and improve the mixing uniformity and reaction efficiency of multi-phase materials.

[0014] The second stirring rod can move up and down reciprocatingly. Compared with the stirring rod that only revolves, it can cover a wider stirring area, so that the material can be fully stirred in the vertical direction, effectively breaking the possible stratification and local accumulation of the material, and greatly improving the mixing uniformity between different materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of a cross-section of the barrel in the present invention; Figure 3 Schematic diagram of the structure of the stirring assembly in the present invention; Figure 4 Schematic diagram of the structure of the rotating shaft, the crossbar, and the first stirring rod in the present invention; Figure 5 This is a schematic structural diagram of the connecting plate, large fixed gear, small fixed gear, sleeve rod, first support plate, small rotating gear, and large rotating gear in the present invention; Figure 6 This is a schematic structural diagram of the toggle lever, drive motor, lifting plate, extension rod, and blocking block in the present invention; Figure 7Schematic diagram of the structure of the spline rod, connecting rod, fixed frame and second stirring rod in the present invention; Figure 8 It is a schematic structural diagram of a cross-section of the connecting rod in the present invention; Figure 9 for Figure 8 Enlarged view of point A in the middle; Figure 10 It is a structural schematic diagram of the fixed frame, reciprocating member, spline rod, connecting column and guide rod in the present invention.

[0016] In the figure: 1. Injection molding machine body; 2. Barrel; 3. Discharge pipe; 4. Stirring assembly; 41. Fixed plate; 42. Servo motor; 43. Rotating shaft; 45. First stirring rod; 46. Cross bar; 47. Sleeve rod; 48. Spline rod; 49. Connecting rod; 410. Fixed frame; 411. Second stirring rod; 412. Vertical rod; 413. Connecting plate; 414. Large fixed gear; 415. Small fixed gear; 416. Small rotating gear; 417. Large rotating gear; 418. First support plate; 419. Second support plate; 420. Drive motor; 421. Toggle lever; 422. Lifting rod; 423, rectangular block; 424, lifting plate; 425, first protrusion; 426, second protrusion; 427, movable shaft; 428, blocking block; 429, extension rod; 430, damping spring; 431, third protrusion; 432, limiting rod; 433, rotating rod; 434, first bevel gear; 435, mounting shaft; 436, second bevel gear; 437, scraper; 438, driven gear; 439, gear ring; 440, fixing ring; 441, reciprocating member; 442, circular groove; 443, moving seat; 444, slider; 445, connecting column; 446, guide rod. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1: Combination Figures 1-10 As shown, the present invention provides a technical solution: a preparation process of high-strength modified engineering plastics, specifically comprising the following steps: Step 1: Blending modification: The base resin, reinforcing material and additives are added into the barrel 2 according to the formula ratio. The materials are stirred and mixed evenly by the rotation of the first stirring rod 45, the fixed frame 410 and the second stirring rod 411 to fully disperse the components. The mixed materials are added into the injection molding machine body 1. The materials are heated and melted by the heating system of the injection molding machine body 1 to achieve the flow state required for injection molding. Step 2: Molding process; Subsequently, the molten material is injected into a preset mold cavity under the push of the screw of the injection molding machine body 1. The mold cavity has a surface corresponding to the shape of the desired product, ensuring that the molded product has a precise shape and size. In the mold cavity, the material cools and solidifies to form a high-strength modified engineering plastic product. Finally, the mold is opened and the product is taken out, completing the entire preparation process to obtain modified engineering plastic particles. Step 3: Post-processing: The formed products are heat treated (such as annealing) to eliminate internal stress and improve the dimensional stability and mechanical properties of the products. According to application requirements, the surface of the products can be sprayed, electroplated, printed, etc. to improve the appearance quality and corrosion resistance of the products.

[0019] Example 2: Combination Figures 1-10 As shown, based on the first embodiment, the barrel 2 is fixedly mounted on the injection molding machine body 1, and the barrel 2 is connected to the injection molding machine body 1 through a discharge pipe 3, and a stirring assembly 4 is provided inside the barrel 2; A fixed plate 41 is fixedly connected to the top of the inner cavity of the stirring assembly 4, a servo motor 42 is fixedly installed on the top of the fixed plate 41, a rotating shaft 43 is fixedly connected to the output end of the servo motor 42, a first stirring rod 45 is fixedly connected to the bottom of the rotating shaft 43, cross bars 46 are fixedly connected on both sides of the bottom end of the rotating shaft 43, a sleeve rod 47 is rotatably connected to the other end of the cross bar 46, a spline rod 48 is provided on the sleeve rod 47, a connecting rod 49 is fixedly connected to the bottom of the spline rod 48, and three groups of fixed frames 410 are provided on the outer wall of the connecting rod 49 in a circumferential array, a scraper 437 is provided on the side of the fixed frame 410 close to the inner wall of the barrel 2, and a row of second stirring rods 411 is provided on the inner end of the fixed frame 410; The outer wall of the rotating shaft 43 is provided with a vertical rod 412 fixedly mounted on the bottom of the fixed plate 41. The vertical rod 412 is slidably connected to a connecting plate 413 in the vertical direction. The bottom of the connecting plate 413 is fixedly connected to a large fixed gear 414 and a small fixed gear 415. The top of the connecting plate 413 is provided with a first support plate 418 and a second support plate 419 fixedly mounted on the bottom of the fixed plate 41. The bottom of the first support plate 418 is fixedly mounted with a driving motor 420. The output end of the servo motor 42 is fixedly connected to a toggle rod 421 and a lifting rod 422, and the toggle rod 421 and the lifting rod 422 are staggered. A rectangular block 423 is fixedly connected to the surface of the second support plate 419, and a lifting plate 424 is slidably connected to the outer side of the rectangular block 423. The bottom of the lifting plate 424 is fixedly connected to the connecting plate 413. The lifting plate 424 is fixedly connected to the first protrusion 425 and the second protrusion 426 on the side close to the first support plate 418, and the first protrusion 425 is fixedly connected to the lifting rod 4 22 correspond to each other, the positions of the lifting plate 424 correspond to each other, the lifting plate 424 is fixedly connected to the third protrusion 431 on one side of the first support plate 418, and the second support plate 419 is rotatably connected to the side of the first support plate 418, and the outer wall of the movable shaft 427 is fixedly connected to a blocking block 428 and an extension rod 429, and the positions of the blocking block 428 and the second protrusion 426 correspond to each other, the positions of the extension rod 429 and the toggle rod 421 correspond to each other, and a damping spring 430 is provided between the extension rod 429 and the second support plate 419, and the second support plate 419 is fixedly connected to the limiting rod 432 on the side away from the first support plate 418, and the limiting rod 432 corresponds to the position of the third protrusion 431, as shown in FIG. Figure 6 As shown, by turning on the drive motor 420 to drive the toggle rod 421 and the lifting rod 422 to rotate clockwise, when the toggle rod 421 contacts the extension rod 429, it can push the movable shaft 427, the blocking block 428, and the extension rod 429 to rotate counterclockwise, and compress the damping spring 430, so that the blocking block 428 rotates until it no longer limits the second protrusion 426. At this time, the lifting plate 424 drives the connecting plate 413, the large fixed gear 414, and the small fixed gear 415 to move downward under the action of its own gravity, so that the limiting rod 432 limits the third protrusion 431. When the toggle rod 421 rotates to no longer contact the extension rod 429, the movable shaft 427, the blocking block 428, and the extension rod 429 are 8. The extension rod 429 moves and resets under the elastic force of the damping spring 430, so that the blocking block 428 is located between the first protrusion 425 and the second protrusion 426. As the lifting rod 422 rotates to contact the first protrusion 425, it can drive the first protrusion 425, the lifting plate 424, the connecting plate 413, the large fixed gear 414, and the small fixed gear 415 to move upward. At the same time, the second protrusion 426 moves to the top position of the blocking block 428. This reciprocating control controls the reciprocating switching of the large fixed gear 414 and the small fixed gear 415 up and down, thereby controlling the rotation speed of the spline rod 48, the connecting rod 49, the fixed frame 410, and the second stirring rod 411. The outer wall of the sleeve rod 47 is fixedly connected with a small rotating gear 416 and a large rotating gear 417, the large fixed gear 414 is meshed with the small rotating gear 416, and the small fixed gear 415 is meshed with the large rotating gear 417. When the large fixed gear 414 and the small fixed gear 415 are controlled to move upward, the large fixed gear 414 is meshed with the small rotating gear 416. When the large fixed gear 414 and the small fixed gear 415 are controlled to move downward, the small fixed gear 415 is meshed with the large rotating gear 417.

[0020] In the embodiment of the present invention, the servo motor 42 is turned on to drive the rotating shaft 43 and the first stirring rod 45 to rotate synchronously. The rotating shaft 43 drives the cross rod 46, the sleeve rod 47, the spline rod 48, the connecting rod 49, the fixed frame 410, and the second stirring rod 411 to rotate synchronously through the cross rod 46, so that the first stirring rod 45, the fixed frame 410, and the second stirring rod 411 stir and mix the materials. At the same time, when the fixed frame 410 rotates, it can drive the scraper 437 to scrape the inner wall of the barrel 2. By turning on the driving motor 420 to drive the toggle rod 421 and the lifting rod 422 to rotate clockwise, when the toggle rod 421 contacts the extension rod 429, it can push the movable shaft 427, the blocking block 428, and the extension rod 429 to rotate counterclockwise, and compress the damping spring 430, so that the blocking block 428 rotates until it no longer limits the second protrusion 426. At this time, the lifting plate 424 drives the connecting plate 413, the large fixed gear 414, and the small fixed gear 415 to move downward under the action of its own gravity, so that the limiting rod 432 limits the third protrusion 431. When the toggle rod 421 rotates until it is no longer in contact with the extension rod 4 29, the movable shaft 427, the blocking block 428, and the extension rod 429 move and reset under the elastic force of the damping spring 430, so that the blocking block 428 is located between the first protrusion 425 and the second protrusion 426. As the lifting rod 422 rotates to contact the first protrusion 425, it can drive the first protrusion 425, the lifting plate 424, the connecting plate 413, the large fixed gear 414, and the small fixed gear 415 to move upward, and at the same time, the second protrusion 426 moves to the top position of the blocking block 428. This reciprocating control controls the reciprocating switching of the large fixed gear 414 and the small fixed gear 415 up and down. When the large fixed gear 414 and the small fixed gear 415 are controlled to move upward, the large fixed gear 414 is meshed with the small rotating gear 416. When the large fixed gear 414 and the small fixed gear 415 are controlled to move downward, the small fixed gear 415 is meshed with the large rotating gear 417. When the large fixed gear 414 is meshed with the small rotating gear 416, the cross bar 46 drives the sleeve rod 47, the spline rod 48, the small rotating gear 416, and the large rotating gear 417 to revolve and rotate, so that the small rotating gear 416 will rotate around the large fixed gear 414, thereby causing the small rotating gear 416 to drive the sleeve rod 47, the spline rod 48, the connecting rod 49, the fixed frame 410, and the second stirring rod 411 to rotate, so that the first stirring rod 45 can stir at a fixed position, and the fixed frame 410 and the second stirring rod 411 can rotate and stir while revolving around the first stirring rod 45; the first stirring rod 45 stirs at a fixed position to preliminarily mix the materials, and the fixed frame 410 and the second stirring rod 411 can rotate while revolving around the first stirring rod 45 to stir, and this composite motion makes the stirring area Materials at different positions can be subjected to forces from different directions and angles, which can effectively break up local agglomeration and stratification in the materials, allowing the materials to be fully mixed in the mixing space and improving the uniformity of mixing. The combination of revolution and rotation increases the contact frequency and relative movement speed between the stirring components and the materials. Revolution enables the stirring components to cover the materials in a larger range, while rotation further enhances the shearing and mixing effect of the stirring components on the surrounding materials, greatly shortening the time required to achieve uniform mixing and improving the mixing efficiency. This stirring method has good adaptability to materials of different viscosities and particle sizes. For high-viscosity materials, the shear force generated by revolution and rotation can effectively overcome the internal friction of the materials and promote material flow and mixing. For materials containing large particles, the rotating stirring components can better crush and disperse the large particles, while revolution can ensure the uniformity of the overall material.

[0021] Example 3: Combination Figure 7 、 Figure 8 、 Figure 9As shown, on the basis of embodiment 2, the side wall of the connecting rod 49 is rotatably connected to the mounting shaft 435, one end of the mounting shaft 435 is fixedly connected to the second stirring rod 411, and the other end is fixedly connected to the second bevel gear 436, the inner cavity of the connecting rod 49 is rotatably connected to the rotating rod 433, and the rotating rod 433 is fixedly connected to the first bevel gear 434 meshing with the second bevel gear 436, the bottom of the rotating rod 433 is fixedly connected to the driven gear 438, and the outer side of the driven gear 438 is meshed with the ring gear 439, and the ring gear 439 is fixedly installed on the inner cavity of the barrel 2, and when the cross bar 46 drives the sleeve rod 47, the spline rod 48, the connecting rod 49, the fixed frame 410, and the second stirring rod 411 to revolve, it can drive the rotating rod 433 and the driven gear 438 rotate synchronously, so that under the action of the ring gear 439, the driven gear 438, the rotating rod 433, and the first bevel gear 434 rotate, so that the first bevel gear 434 drives the meshed second bevel gear 436 to rotate, and then the second bevel gear 436 drives the mounting shaft 435 and the second stirring rod 411 to rotate and stir in a horizontal position, that is, the fixed frame 410 and the second stirring rod 411 can make the second stirring rod 411 rotate and stir horizontally while they are in revolution and rotation; the second stirring rod 411 adds horizontal rotation stirring on the basis of revolution and rotation, which can act more deeply on the inside of the material. This multi-directional movement allows the stirring to reach different parts of the material. The stirring rod can stir the material in a three-dimensional manner, break the local agglomeration and dead angle that may exist in the material, and make the material fully mixed in three-dimensional space, especially for high viscosity and high density materials, which can significantly improve the depth and uniformity of stirring; the revolution makes the stirring range cover the entire stirring area, the rotation increases the local stirring intensity, and the horizontal rotation stirring further expands the range of action of the stirring rod on the material, ensuring that every corner in the stirring area can be stirred, avoiding the occurrence of stirring blind spots, and realizing all-round and dead-angle-free stirring; the combined effect of multiple stirring modes makes the relative movement between the first stirring rod 45, the second stirring rod 411 and the material more complex and frequent, and the revolution, rotation and horizontal rotation stirring cooperate with each other, greatly enhancing the stirring depth and uniformity. The addition of the first stirring rod 45 and the second stirring rod 411 has shearing, squeezing and mixing effects on the materials, thereby accelerating the flow and mixing process of the materials, shortening the time required to achieve uniform stirring, significantly improving the stirring efficiency and reducing energy consumption; for low-viscosity materials, orbital and horizontal rotation stirring can quickly disperse them, and rotation can further refine the stirring effect; for high-viscosity materials, the synergistic effect of multiple stirring methods can overcome the high internal friction of the materials, making the materials easier to flow and mix, ensuring that materials of different viscosities can obtain good stirring effects; the multi-directional rotation stirring of the second stirring rod 411 can enhance the interfacial contact and interaction between different phases, and improve the mixing uniformity and reaction efficiency of multi-phase materials.

[0022] In the embodiment of the present invention, when the cross bar 46 drives the sleeve rod 47, the spline rod 48, the connecting rod 49, the fixed frame 410, and the second stirring rod 411 to revolve, it can drive the rotating rod 433 and the driven gear 438 to rotate synchronously, so that under the action of the ring gear 439, the driven gear 438, the rotating rod 433, and the first bevel gear 434 rotate, so that the first bevel gear 434 drives the meshing second bevel gear 436 to rotate, and then the second bevel gear 436 drives the mounting shaft 435 and the second stirring rod 411 to rotate and stir in a horizontal position, that is, the fixed The frame 410 and the second stirring rod 411 can perform horizontal rotation stirring while they are in revolution and rotation. The second stirring rod 411 adds horizontal rotation stirring on the basis of revolution and rotation, which can act more deeply on the inside of the material. This multi-directional movement allows the stirring to reach different layers of the material, breaking up the local agglomeration and dead corners that may exist in the material, so that the material can be fully mixed in three-dimensional space, especially for high-viscosity and high-density materials, which can significantly improve the depth and uniformity of stirring. The revolution makes the stirring range cover the entire stirring area. Rotation increases local stirring intensity, while horizontal rotation further expands the stirring rod's range of action on the material, ensuring that every corner of the stirring area is stirred, avoiding blind spots and achieving all-round, seamless stirring. The combined action of multiple stirring modes makes the relative movement between the first stirring rod 45, the second stirring rod 411 and the material more complex and frequent. The coordinated stirring of revolution, rotation, and horizontal rotation greatly increases the shearing, squeezing, and mixing effects of the first stirring rod 45 and the second stirring rod 411 on the material, thereby accelerating the flow and mixing process of the material, shortening the time required to achieve uniform stirring, significantly improving stirring efficiency, and reducing energy consumption. For low-viscosity materials, revolution and horizontal rotation can quickly disperse them, while rotation can further refine the stirring effect. For high-viscosity materials, the synergistic effect of multiple stirring modes can overcome the high internal friction of the material, making the material easier to flow and mix, and ensuring good stirring effect for materials of different viscosities. The multi-directional stirring of the second stirring rod 411 can enhance the interfacial contact and interaction between different phases, improving the mixing uniformity and reaction efficiency of multi-phase materials.

[0023] Example 3: Combination Figure 10As shown, on the basis of embodiment 2, a fixing ring 440 is fixedly connected to the bottom end of the fixing plate 41, and a reciprocating member 441 is fixedly connected to the outer wall of the fixing ring 440. A circular groove 442 is formed on the outer wall of the reciprocating member 441. A movable seat 443 is slidably connected to the circular groove 442 through a slider 444. A connecting column 445 is slidably connected to the movable seat 443. The bottom of the connecting column 445 is rotatably connected to the spline rod 48. The side wall of the connecting column 445 is fixedly connected to a guide rod 446 that is slidably adapted to the reciprocating member 441. When the cross bar 46 drives the sleeve rod 47 and the spline rod 48 to revolve, the spline rod 48 drives the connecting column 445, the movable seat 443, and the slider. 444 and the guide rod 446 move synchronously, so that the slider 444 slides in the circular groove 442, and at the same time the guide rod 446 moves along the top of the reciprocating member 441, so that the guide rod 446, the connecting column 445, the spline rod 48, the connecting rod 49, the fixed frame 410, and the second stirring rod 411 can move back and forth up and down. The second stirring rod 411 can move back and forth up and down. Compared with the stirring rod that only revolves, it can cover a wider stirring area, so that the material can be fully stirred in the vertical direction, effectively breaking the possible stratification and local accumulation of the material, and greatly improving the mixing uniformity between different materials.

[0024] In an embodiment of the present invention, when the cross rod 46 drives the sleeve rod 47 and the spline rod 48 to revolve and rotate, the spline rod 48 drives the connecting column 445, the movable seat 443, the slider 444, and the guide rod 446 to move synchronously, so that the slider 444 slides in the circular groove 442, and at the same time the guide rod 446 moves along the top of the reciprocating member 441, so that the guide rod 446, the connecting column 445, the spline rod 48, the connecting rod 49, the fixed frame 410, and the second stirring rod 411 can reciprocate up and down. Compared with the stirring rod that only revolves, it can cover a wider stirring area, so that the material can be fully stirred in the vertical direction, effectively breaking the possible stratification and local accumulation of the material, and greatly improving the mixing uniformity between different materials.

[0025] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A process for preparing high-strength modified engineering plastics, characterized in that: The specific steps include: Step 1: Blending modification: The base resin, reinforcing material and auxiliary agent are added into the barrel (2) according to the formula ratio, and the materials are stirred and mixed uniformly by rotating the first stirring rod (45), the fixed frame (410) and the second stirring rod (411) to fully disperse the components. The mixed materials are added into the injection molding machine body (1), and the materials are heated and melted by the heating system of the injection molding machine body (1) to achieve the flow state required for injection molding; Step 2: Molding process; Subsequently, the molten material is injected into a preset mold cavity under the push of the screw of the injection molding machine body (1). The mold cavity has a surface corresponding to the shape of the desired product. In the mold cavity, the material cools and solidifies to form a high-strength modified engineering plastic product. Finally, the mold is opened and the product is taken out, completing the entire preparation process to obtain modified engineering plastic particles. Step 3: Post-processing: The formed products are heat treated to eliminate internal stress.

2. The process for preparing a high-strength modified engineering plastic according to claim 1, characterized in that: The barrel (2) is fixedly mounted on the injection molding machine body (1), and the barrel (2) is connected to the injection molding machine body (1) via a discharge pipe (3), and a stirring assembly (4) is provided inside the barrel (2); The top of the inner cavity of the stirring assembly (4) is fixedly connected to a fixed plate (41), the top of the fixed plate (41) is fixedly mounted with a servo motor (42), the output end of the servo motor (42) is fixedly connected to a rotating shaft (43), the bottom of the rotating shaft (43) is fixedly connected to a first stirring rod (45), both sides of the bottom end of the rotating shaft (43) are fixedly connected to cross bars (46), the other end of the cross bar (46) is rotatably connected to a sleeve rod (47), a spline rod (48) is provided on the sleeve rod (47), the bottom of the spline rod (48) is fixedly connected to a connecting rod (49), and the outer wall of the connecting rod (49) is provided with three groups of fixed frames (410) in a circumferential array, a scraper (437) is provided on one side of the fixed frame (410) close to the inner wall of the barrel (2), and a row of second stirring rods (411) is provided at the inner end of the fixed frame (410).

3. The process for preparing a high-strength modified engineering plastic according to claim 2, characterized in that: The outer wall of the rotating shaft (43) is provided with a vertical rod (412) fixedly mounted on the bottom of the fixed plate (41). The vertical rod (412) is slidably connected to the connecting plate (413) in the vertical direction. The bottom of the connecting plate (413) is fixedly connected to a large fixed gear (414) and a small fixed gear (415).

4. The process for preparing a high-strength modified engineering plastic according to claim 3, characterized in that: A first support plate (418) and a second support plate (419) are provided on both sides of the top of the connecting plate (413), which are fixedly mounted on the bottom of the fixing plate (41). A driving motor (420) is fixedly mounted on the bottom end of the first support plate (418). A toggle rod (421) and a lifting rod (422) are fixedly connected to the output end of the servo motor (42), and the toggle rod (421) and the lifting rod (422) are staggered.

5. The process for preparing a high-strength modified engineering plastic according to claim 4, characterized in that: The second support plate (419) is fixedly connected to a rectangular block (423) on its surface, and a lifting plate (424) is slidably connected to the outside of the rectangular block (423). The bottom of the lifting plate (424) is fixedly connected to the connecting plate (413). The lifting plate (424) is fixedly connected to a first protrusion (425) and a second protrusion (426) on one side close to the first support plate (418), and the positions of the first protrusion (425) and the lifting rod (422) correspond to each other. The lifting plate (424) is fixedly connected to a third protrusion (431) on one side of the first support plate (418). The second support plate (419) is fixedly connected to the first support plate ( 418) is rotatably connected to a movable shaft (427) on one side, and a blocking block (428) and an extension rod (429) are fixedly connected to the outer wall of the movable shaft (427), and the positions of the blocking block (428) and the second protrusion (426) correspond to each other, the positions of the extension rod (429) and the toggle rod (421) correspond to each other, and a damping spring (430) is provided between the extension rod (429) and the second support plate (419), and a limiting rod (432) is fixedly connected to the side of the second support plate (419) away from the first support plate (418), and the limiting rod (432) corresponds to the position of the third protrusion (431).

6. The process for preparing a high-strength modified engineering plastic according to claim 5, characterized in that: The outer wall of the sleeve rod (47) is fixedly connected with a small rotating gear (416) and a large rotating gear (417), the large fixed gear (414) is meshed with the small rotating gear (416), and the small fixed gear (415) is meshed with the large rotating gear (417).

7. The process for preparing a high-strength modified engineering plastic according to claim 6, characterized in that: The side wall of the connecting rod (49) is rotatably connected to a mounting shaft (435), one end of the mounting shaft (435) is fixedly connected to the second stirring rod (411), and the other end is fixedly connected to the second bevel gear (436). The inner cavity of the connecting rod (49) is rotatably connected to a rotating rod (433), and the rotating rod (433) is fixedly connected to a first bevel gear (434) meshing with the second bevel gear (436). The bottom of the rotating rod (433) is fixedly connected to a driven gear (438), and the outer side of the driven gear (438) is meshed with a gear ring (439), and the gear ring (439) is fixedly mounted on the inner cavity of the barrel (2).

8. The process for preparing a high-strength modified engineering plastic according to claim 7, characterized in that: The bottom end of the fixed plate (41) is fixedly connected to a fixed ring (440), the outer wall of the fixed ring (440) is fixedly connected to a reciprocating member (441), a circular groove (442) is formed on the outer wall of the reciprocating member (441), a movable seat (443) is slidably connected in the circular groove (442) via a slider (444), a connecting column (445) is slidably connected to the movable seat (443), the bottom of the connecting column (445) is rotatably connected to the spline rod (48), and the side wall of the connecting column (445) is fixedly connected to a guide rod (446) that is slidably adapted to the reciprocating member (441).

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