Plastic mixing mechanism and automatic plastic mixing system applying same

Abstract

The invention relates to the technical field of injection molding processing, in particular to a plastic mixing mechanism and an automatic plastic mixing system applying the plastic mixing mechanism, and the plastic mixing mechanism comprises a mixing tank used for placing and cold-mixing a base material and a color master batch, and a mixing partition bin used for placing and hot-mixing the base material and the color master batch, the mixing tank is used for containing materials, the first stirring mechanism is used for stirring hot-mixed materials, the second stirring mechanism is used for stirring cold-mixed materials, the mounting rack is used for mounting and adjusting the inclination angle of the mixing tank, the mixing partition bin is mounted in the mixing tank, and the mixing partition bin is communicated with the mixing tank after the materials contained in the mixing partition bin are uniformly stirred. When the device works, hot mixing work and cold mixing work of a base material and a color master batch can be achieved, the device is suitable for mixing work of various materials, meanwhile, by arranging the mixing partition bins in the mixing tank, the mixing work of the materials and the storage work of the evenly-stirred materials can be synchronously conducted, sectional type mixing is achieved, and the mixing uniformity and the process controllability are improved.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, specifically to a plastic mixing mechanism and an automatic plastic mixing system using the same. Background Technology

[0002] Plastic products are manufactured using plastic base materials as the basic raw material. The production process involves mixing the plastic base materials and auxiliary materials before using equipment such as injection molding machines to produce the final product. Therefore, a mixing device is necessary. However, existing mixing devices have some shortcomings. For example, a pretreatment mixing device for plastic ingredients disclosed in Chinese Patent No. CN201810062576.9 includes a masterbatch pretreatment drying and dehumidification chamber located on one side of the top of the main working chamber. Furthermore, an auxiliary material holding funnel is installed on the side of the main working box away from the masterbatch pretreatment drying and dehumidification box at its top. An auxiliary material inlet pipe is opened at the top of the auxiliary material holding funnel. The masterbatch pretreatment drying and dehumidification box and the auxiliary material holding funnel have masterbatch outlets and electrically adjustable auxiliary material outlets respectively at their bottom ends. Support frames are fixedly connected to the inner wall of the main working box on the side directly below the masterbatch pretreatment drying and dehumidification box and the auxiliary material holding funnel. A first automatic weighing and dispensing device and a second automatic weighing and dispensing device are fixedly connected to the bottom end of each support frame. The main working box is located on the inner wall of one side directly below the second automatic weighing and feeding device, and a control box is fixedly connected to it. The bottom of the control box is fixedly connected to a data comparator and a central processing unit, which achieves the purpose of independently weighing the masterbatch and auxiliary materials. When the weight reaches the set threshold, the device starts to feed automatically, which improves the automation level of plastic batching pretreatment and thus improves the pretreatment efficiency of plastic batching. Although the above-mentioned plastic batching and mixing device can achieve the functions of thorough mixing and automatic feeding, in actual use, its mixing work is completed in one go. After the mixing is completed, the material needs to be packaged and stored before injection molding. It cannot be directly installed on the injection molding equipment, which makes the material easy to be contaminated during handling and reduces the product quality of plastic products. At the same time, if the material ratio is incorrect, the material needs to be put back into the mixing device and mixed again, which is time-consuming and labor-intensive, and there are many production steps. At the same time, with the increase in market demand, the requirements for raw materials are also getting higher and higher. Not only do they need to be clean and pure, but they also have higher requirements for mixing temperature. The existing mixing device can no longer meet the current production needs. Summary of the Invention

[0003] The technical problem to be solved by this invention is that existing mixing devices are generally independent of injection molding equipment. After the materials are mixed evenly, they need to be manually bagged and transported. During the transportation process, they are easily contaminated by the outside world, which reduces the quality of plastic products. At the same time, existing mixing devices generally do not have temperature regulation functions, and cannot be used for mixing materials that are highly sensitive to temperature. They have certain limitations and low versatility.

[0004] To solve the above-mentioned technical problems, the first aspect of the present invention adopts the following technical solution: a plastic mixing mechanism, comprising a mixing tank for placing and cold-mixing base material and color masterbatch, a mixing compartment for placing and hot-mixing base material and color masterbatch, a first stirring mechanism for cold-mixing materials by stirring, a second stirring mechanism for hot-mixing materials by stirring, and a mounting frame for installing and adjusting the tilt angle of the mixing tank. The mixing compartment is installed inside the mixing tank, the stirring part of the first stirring mechanism is arranged inside the mixing compartment, the stirring part of the second stirring mechanism is arranged inside the mixing tank, the tilt angle of the mixing tank is adjustablely limited and mounted on the rotating part of the mounting frame, the mixing compartment is connected to the mixing tank after the materials contained therein are stirred evenly, and both the mixing compartment and the mixing tank are provided with a temperature regulating device.

[0005] During operation, this invention enables both hot and cold mixing of base materials and color masterbatches, making it suitable for mixing various materials. Simultaneously, by arranging mixing compartments within the mixing tank, it allows for the simultaneous mixing and storage of uniformly stirred materials, achieving segmented mixing, improving mixing uniformity and process controllability. Furthermore, the discharge end of the plastic mixing mechanism can be directly installed on the inlet end of the injection molding mechanism, eliminating the need for manual bagging and handling, saving manpower and resources, and avoiding temperature fluctuations, contamination, and efficiency losses caused by material transfer between different devices. The mixing tank is adjustable in angle and mounted on the rotating part of the mounting frame, allowing for easy adaptation to different material characteristics, improving mixing effect and discharge smoothness. It is compatible with mixing powders and granules, offering strong versatility and enabling fully automated mixing of base materials and color masterbatches.

[0006] Preferably, the mixing compartment includes an inner compartment, an outer compartment, and a compartment drive device. The outer compartment is fitted around the inner compartment. The inner compartment has a plurality of first partitions arranged in a circumferential pattern with intervals. A first window for material to pass through is provided between adjacent first partitions. The outer compartment has a plurality of second partitions arranged in a circumferential pattern with intervals. A second window corresponding to a plurality of first windows is provided between the plurality of second partitions. The inner compartment is connected to the output part of the compartment drive device through a transmission assembly and rotates under the drive of the compartment drive device. The first and second windows are aligned with each other to connect the mixing compartment and the mixing tank under the drive of the compartment drive device, or staggered to close the mixing compartment and the mixing tank.

[0007] When this invention is in operation, rotating the inner chamber causes the first and second windows to align with each other to connect the mixing compartment and the mixing tank, or to stagger them to close the mixing compartment and the mixing tank. This enables precise on / off control of the mixing compartment and the mixing tank. The structure is compact, the response is rapid, and the discharge port area is large, which can greatly improve the discharge efficiency, avoid material jamming, and reduce the risk of material residue and jamming. At the same time, it can tilt synchronously when the mixing tank rotates, thereby further reducing the risk of material jamming. The mixing compartment and the mixing tank can be connected together as needed, so that the first and second stirring mechanisms can perform mixing work simultaneously, realizing the simultaneous mixing of large batches of materials. The mixing efficiency is high and it is suitable for various mixing operations.

[0008] Preferably, one side of each first partition is inclined toward the interior of the inner chamber and has a first guide plate for guiding materials into or out of the mixing chamber. One side of each second partition is inclined toward the interior of the outer chamber and has a second guide plate for guiding materials into or out of the mixing chamber. The other side of the first partition is connected to the second guide plate when the mixing chamber is closed, and the other side of the second partition is connected to the first guide plate when the mixing chamber is closed.

[0009] Preferably, the first partition and the second partition are arranged to extend from bottom to top in a clockwise or counterclockwise direction, and a third guide plate for lifting or lowering materials is arranged on the other side of each first partition, extending away from the inner compartment. A fourth guide plate for lifting or lowering materials is arranged on the other side of each second partition, extending away from the outer compartment.

[0010] Preferably, the outer chamber is rotatably fitted around the inner chamber and is connected to the output part of the partition drive device through the inner chamber. The outer chamber lifts or lowers the material under the drive of the partition drive device.

[0011] In operation, this invention achieves efficient feeding and discharging of the mixing compartment by setting a first and second guide plate, which further increases the area of ​​the discharge port and avoids material jamming. Furthermore, by setting a third and fourth guide plate, the material at the inner edge of the mixing compartment is raised or lowered, further improving mixing efficiency and uniformity when materials are stirred in the mixing tank. Simultaneously, it enhances the sealing of the mixing compartment, preventing premature leakage or cross-contamination. During operation, the outer and inner compartments rotate synchronously under the drive of the compartment drive device, generating axial thrust to promote the up-and-down circulation of materials during the mixing process, enhancing the mixing effect and improving material flow smoothness. It is particularly suitable for granular or poorly flowing plastic base materials, improving mixing uniformity, and has a wide range of applications and good versatility.

[0012] Preferably, the first stirring mechanism includes a plurality of first stirring blades for lifting materials, a first stirring transmission rod, and a first stirring drive device. The first stirring transmission rod is rotatably and limitably installed at the top of the inside of the mixing tank. The plurality of first stirring blades are sequentially mounted around the first stirring transmission rod and are connected to the output part of the first stirring drive device through the first stirring transmission rod. The second stirring mechanism includes a plurality of second stirring blades for lifting materials, a second stirring transmission rod, and a second stirring drive device. The second stirring transmission rod is rotatably and limitably installed at the bottom of the inside of the mixing tank. The plurality of second stirring blades are sequentially mounted around the second stirring transmission rod and are connected to the output part of the second stirring drive device through the second stirring transmission rod.

[0013] Preferably, the second stirring mechanism further includes a plurality of stirring ring plates for lowering the material. The plurality of stirring ring plates are arranged around the second stirring blades from bottom to top in a clockwise or counterclockwise direction and are located near the inner wall of the mixing tank. The inclination direction of the stirring ring plates is set to be opposite to the inclination direction of the second stirring blades.

[0014] When the present invention is in operation, the mixing work is achieved through the first stirring mechanism and the second stirring mechanism, and the mixing chamber and the stirring ring plate are used to balance the axial force distribution of the first stirring transmission rod and the second stirring transmission rod. It can form a composite flow mode of upper and lower convection in the mixing tank and the mixing chamber respectively, thereby eliminating the mixing dead zone and improving the uniformity of the material.

[0015] Preferably, the mounting frame includes a rotation drive device, a fixed mounting frame, and a rotating mounting frame. The rotating mounting frame is rotatably mounted inside the fixed mounting frame and is connected to the output part of the rotation drive device via a transmission assembly.

[0016] To solve the above-mentioned technical problems, the second aspect of the present invention adopts the following technical solution: an automatic plastic mixing system, comprising a plastic mixing mechanism as described in any of the preceding aspects, and further comprising: The main control system is used for data processing and overall control of the automatic plastic mixing system; An automatic base material filling mechanism is used to automatically fill base material according to preset control parameters; An automatic color masterbatch dispensing mechanism is used to automatically dispense color masterbatch according to preset control parameters; The mixing status monitoring device is used to monitor the real-time status of the materials and output the real-time status information of the materials. The discharge ends of the automatic base material dispensing mechanism and the automatic color masterbatch dispensing mechanism are respectively connected to the feed end of the plastic mixing mechanism. The monitoring part of the mixing status monitoring device is arranged inside the plastic mixing mechanism. The control end of the plastic mixing mechanism, the control end of the automatic base material dispensing mechanism, the control end of the automatic color masterbatch dispensing mechanism, and the signal output end of the mixing status monitoring device are respectively electrically connected to the main control system. The main control system outputs control signals to the plastic mixing mechanism, the automatic base material dispensing mechanism, and the automatic color masterbatch dispensing mechanism according to the preset control parameters based on the real-time status information returned by the mixing status monitoring device, so as to execute the automatic plastic mixing operation.

[0017] When this invention is in operation, it can realize a series of tasks such as automatic proportioning and addition of base material and color masterbatch, automatic control of the mixing process, and real-time monitoring and feedback of mixing quality. It has a high degree of automation. The process parameters can be dynamically adjusted through the main control system to ensure mixing quality, reduce manual intervention, improve production consistency, and meet the needs of intelligent manufacturing and industrial automation.

[0018] Preferably, the mixing state monitoring device is provided with at least one of the following: a uniformity monitoring terminal for monitoring material uniformity, a temperature monitoring terminal for monitoring real-time material temperature, a moisture monitoring terminal for monitoring material moisture content, and an electrostatic monitoring terminal for monitoring material static electricity.

[0019] The beneficial technical effects of this invention include: 1. This invention enables both hot and cold mixing of base materials and color masterbatches, and is suitable for mixing various materials. By arranging mixing compartments within the mixing tank, it allows for simultaneous mixing and storage of uniformly stirred materials, achieving segmented mixing, improving mixing uniformity and process controllability. Furthermore, the discharge end of the plastic mixing mechanism can be directly installed on the inlet end of the injection molding mechanism, eliminating the need for manual bagging and handling, saving manpower and resources, and avoiding temperature fluctuations, contamination, and efficiency losses caused by material transfer between different devices. The mixing tank is adjustable in angle and mounted on the rotating part of the mounting frame, allowing for easy adaptation to different material characteristics, improving mixing effect and discharge smoothness. It is compatible with mixing powders and granules, has strong versatility, and enables fully automatic mixing of base materials and color masterbatches.

[0020] 2. This invention achieves precise on / off control of the mixing chamber and mixing tank by rotating the inner chamber to align the first and second windows together, connecting the mixing chamber and mixing tank, or by offsetting them to close them. It features a compact structure, rapid response, and a large discharge area, significantly improving discharge efficiency, preventing material jamming, and reducing material residue and jamming risks. Simultaneously, it can tilt synchronously when the mixing tank rotates, further reducing jamming risks. Furthermore, the mixing chamber and mixing tank can be connected as needed, allowing the first and second mixing mechanisms to perform mixing simultaneously, achieving simultaneous mixing of large quantities of material with high efficiency, and is suitable for various mixing operations.

[0021] 3. This invention achieves efficient feeding and discharging of the mixing compartment by setting a first guide plate and a second guide plate, which can further increase the area of ​​the discharge port and avoid material jamming. By setting a third guide plate and a fourth guide plate, the material at the inner edge of the mixing compartment can be raised or lowered, which can further improve the mixing efficiency and uniformity when the material is stirred in the mixing tank. At the same time, it can enhance the sealing of the mixing compartment and prevent premature material leakage or cross-contamination. During operation, the outer and inner compartments can rotate synchronously under the drive of the compartment drive device, which can generate axial driving force, promote the up and down circulation of materials during the mixing process, enhance the mixing effect, and improve the smoothness of material flow. It is particularly suitable for granular or poorly flowing plastic base materials, which is beneficial to improving the mixing uniformity. It has a wide range of applications and good versatility.

[0022] 4. The present invention achieves the mixing operation through the first stirring mechanism and the second stirring mechanism, and works in conjunction with the mixing compartment and the stirring ring plate to balance the axial force distribution of the first stirring drive rod and the second stirring drive rod, and can form a composite flow mode of upper and lower convection in the mixing tank and the mixing compartment respectively, thereby eliminating the mixing dead zone and improving the uniformity of materials.

[0023] 5. This invention can realize a series of tasks such as automatic proportioning and addition of base material and color masterbatch, automatic control of the mixing process, real-time monitoring and feedback of mixing quality, etc. It has a high degree of automation. The process parameters can be dynamically adjusted through the main control system to ensure the mixing quality, reduce manual intervention, improve production consistency, and meet the needs of intelligent manufacturing and industrial automation.

[0024] Other features and advantages of the present invention will be described in detail in the following detailed description and accompanying drawings. Attached Figure Description

[0025] The invention will be further described below with reference to the accompanying drawings: Figure 1 A schematic diagram of the structure of a plastic mixing mechanism Figure 1 (Mixing compartment open); Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of some components in a plastic mixing mechanism (mixing compartment in closed state). Figure 4 This is a partial cross-sectional view of the mixing compartment (with the mixing compartment closed). Figure 5 An exploded view of some components in a plastic mixing mechanism; Figure 6 A schematic diagram of the structure of a plastic mixing mechanism Figure 2 (Mixing compartment open). Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0027] In the following description, terms such as “inner,” “outer,” “upper,” “lower,” “left,” and “right” are used only to indicate orientation or positional relationship for the convenience of describing the embodiments and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0028] Example 1: Please see Figures 1 to 6This embodiment discloses a plastic mixing mechanism, including a mixing tank 1 for placing and cold mixing base material and color masterbatch, a mixing compartment 2 for placing and hot mixing base material and color masterbatch, a first stirring mechanism 3 for stirring hot mixing materials, a second stirring mechanism 4 for stirring cold mixing materials, and a mounting frame 5 for installing and adjusting the tilt angle of the mixing tank 1. The following is a detailed description with reference to the accompanying drawings.

[0029] In this embodiment, the mixing compartment 2 is installed inside the mixing tank 1. The stirring part of the first stirring mechanism 3 is arranged inside the mixing compartment 2, and the stirring part of the second stirring mechanism 4 is arranged inside the mixing tank 1. The mixing tank 1 is tilted and limited at an adjustable angle on the rotating part of the mounting frame 5. In a specific implementation, the mounting frame 5 includes a rotating drive device 51, a fixed mounting frame 52, and a rotating mounting frame 53. The rotating mounting frame 53 is rotatably installed inside the fixed mounting frame 52 and is connected to the output part of the rotating drive device 51 through a transmission component. The mixing tank 1 is installed on the rotating mounting frame 53, and the discharge port of the mixing tank 1 is arranged on the side of the end cap. By flipping the mixing tank 1, material jamming can be avoided, and the discharge efficiency can be improved. By realizing the automatic adjustment of the angle of the mixing tank 1, it is convenient to optimize the mixing state according to the material characteristics. The mixing compartment 2 is connected to the mixing tank 1 after the material contained therein is stirred evenly. Both the mixing compartment 2 and the mixing tank 1 are equipped with temperature control devices.

[0030] In operation, this embodiment can achieve both hot and cold mixing of base materials and color masterbatches, making it suitable for mixing various materials. Simultaneously, by arranging mixing compartments 2 within the mixing tank 1, it enables simultaneous mixing and storage of uniformly stirred materials, achieving segmented mixing, improving mixing uniformity and process controllability. Furthermore, the discharge end of the plastic mixing mechanism can be directly installed on the inlet end of the injection molding mechanism, eliminating the need for manual bagging and handling, saving manpower and resources, and avoiding temperature fluctuations, contamination, and efficiency losses caused by material transfer between different devices. The mixing tank 1 is adjustable in angle and mounted on the rotating part of the mounting frame 5, allowing for easy adaptation to different material characteristics, improving mixing effect and discharge smoothness. It is compatible with mixing powders and granules, exhibiting strong versatility, and enabling fully automatic mixing of base materials and color masterbatches.

[0031] In this embodiment, the mixing compartment 2 includes an inner compartment 21, an outer compartment 22, and a compartment drive device 23. The outer compartment 22 is fitted around the inner compartment 21. The inner compartment 21 is provided with a plurality of first partitions 211, which are arranged around each other at intervals. A first window for material to pass through is provided between adjacent first partitions 211. The outer compartment 22 is provided with a plurality of second partitions 221, which are arranged around each other at intervals. A second window corresponding to a plurality of first windows is provided between the plurality of second partitions 221. The inner compartment 21 is connected to the output part of the compartment drive device 23 through a transmission component and rotates under the drive of the compartment drive device 23. The first window and the second window are aligned with each other under the drive of the compartment drive device 23 to connect the mixing compartment 2 and the mixing tank 1, or staggered to close the mixing compartment 2 and the mixing tank 1.

[0032] In this embodiment, rotating the inner chamber 21 causes the first and second windows to align with each other to connect the mixing chamber 2 and the mixing tank 1, or to stagger them to close the mixing chamber 2 and the mixing tank 1. This enables precise on / off control of the mixing chamber 2 and the mixing tank 1. The structure is compact, the response is rapid, and the discharge port area is large, which can greatly improve the discharge efficiency, avoid material jamming, and reduce the risk of material residue and jamming. At the same time, it can tilt synchronously when the mixing tank 1 rotates, thereby further reducing the risk of material jamming. The mixing chamber 2 and the mixing tank 1 can be connected together as needed, so that the first stirring mechanism 3 and the second stirring mechanism 4 can perform mixing work at the same time, realizing the simultaneous mixing of large batches of materials. The mixing efficiency is high and it is suitable for various mixing operations.

[0033] Preferably, one side of each first partition 211 is inclined towards the interior of the inner chamber 21 and has a first guide plate 2111 for guiding materials into or out of the mixing chamber 2. One side of each second partition 221 is inclined towards the interior of the outer chamber 22 and has a second guide plate 2211 for guiding materials into or out of the mixing chamber 2. The other side of the first partition 211 is connected to the second guide plate 2211 when the mixing chamber 2 is closed, and the other side of the second partition 221 is connected to the first guide plate 2111 when the mixing chamber 2 is closed. When the mixing chamber 2 rotates, it can throw out the material in the mixing chamber 2 or scoop in the material in the mixing tank 1, thus... As a further improvement to this embodiment, the first partition 211 and the second partition 221 are arranged to extend from bottom to top in a clockwise or counterclockwise direction, respectively. On the other side of each first partition 211, a third guide plate 2112 for lifting or lowering materials is arranged to extend away from the interior of the inner chamber 21. On the other side of each second partition 221, a fourth guide plate 2212 for lifting or lowering materials is arranged to extend away from the interior of the outer chamber 22. The outer chamber 22 is rotatably fitted around the outer periphery of the inner chamber 21 and is connected to the output part of the partition drive device 23 through the inner chamber 21. The outer chamber 22 lifts or lowers materials under the drive of the partition drive device 23.

[0034] In this embodiment, the efficient feeding and discharging of the mixing chamber 2 is achieved by setting the first guide plate 2111 and the second guide plate 2211, which can further increase the area of ​​the discharge port and avoid material jamming. The material at the inner edge of the mixing chamber 2 is raised or lowered by setting the third guide plate 2112 and the fourth guide plate 2212, which can further improve the mixing efficiency and uniformity when stirring materials in the mixing tank 1. At the same time, it can enhance the sealing of the mixing chamber 2 and prevent premature material leakage or cross-contamination. During operation, the outer chamber 22 and the inner chamber 21 can rotate synchronously under the drive of the chamber drive device 23, which can generate axial driving force, promote the up and down circulation of materials during the mixing process, enhance the mixing effect, and improve the smoothness of material flow. It is particularly suitable for granular or poorly flowing plastic base materials, which is beneficial to improving the mixing uniformity. It has a wide range of applications and good versatility.

[0035] Preferably, the first stirring mechanism 3 includes a plurality of first stirring blades 31 for lifting materials, a first stirring transmission rod 32, and a first stirring drive device 33. The first stirring transmission rod 32 is rotatably and limitly installed at the top of the inside of the mixing tank 1. The plurality of first stirring blades 31 are sequentially mounted around the first stirring transmission rod 32 and are connected to the output part of the first stirring drive device 33 through the first stirring transmission rod 32. The second stirring mechanism 4 includes a plurality of second stirring blades 41 for lifting materials, a second stirring transmission rod 42, and a second stirring drive device 43. The second stirring transmission rod 42 is rotatably and limitly installed at the bottom of the inside of the mixing tank 1. The second stirring blades 41 are sequentially mounted around the second stirring transmission rod 42 and are connected to the output part of the second stirring drive device 43 via the second stirring transmission rod 42. As a further improvement of this embodiment, in order to improve the efficiency of material circulation and reduce the axial force of the second stirring transmission rod 42, the second stirring mechanism 4 also includes several stirring ring plates 44 for lowering the material. The stirring ring plates 44 are arranged around the second stirring blades 41 from bottom to top in a clockwise or counterclockwise direction and are located near the inner wall of the mixing tank 1. The tilting direction of the stirring ring plates 44 is opposite to the tilting direction of the second stirring blades 41.

[0036] In this embodiment, the mixing process is achieved through the first stirring mechanism 3 and the second stirring mechanism 4. The mixing chamber 2 and the stirring ring plate 44 are used to balance the axial force distribution of the first stirring transmission rod 32 and the second stirring transmission rod 42. This allows for the formation of a composite flow pattern of upper and lower convection within the mixing tank 1 and the mixing chamber 2, thereby eliminating mixing dead zones and improving material uniformity.

[0037] During operation, the inner chamber 21 is rotated by the compartment drive device 23. When the mixing compartment 2 rotates and closes, the second stirring mechanism 4 lifts the material at the bottom of the mixing compartment 2 to the top, and the third guide plate 2112 and the fourth guide plate 2212 lower the material at the top of the mixing compartment 2 to the bottom, thus completing the up-and-down circulation of the material in the mixing compartment 2. At the same time, the first stirring mechanism 3 can perform cold mixing on the uniformly mixed material to prevent the material from clumping. When the mixing compartment 2 rotates and opens... It can connect the mixing compartment 2 and the mixing tank 1. The first stirring mechanism 3 and the second stirring mechanism 4 lift the material at the bottom of the mixing tank 1 to the top of the mixing tank 1, and the mixing compartment 2 and the stirring ring plate 44 lower the material at the top of the mixing tank 1 to the bottom of the mixing tank 1, thereby completing the up-and-down circulation of the material in the mixing tank 1. At the same time, if there is a ratio error, the base material or color masterbatch can be directly added, thereby completing the correction in the mixing tank 1 and / or the mixing compartment 2 without additional operation steps, which can save manpower and resources to a certain extent.

[0038] In practical implementation, the temperature control device includes at least one of the following: a lubricating oil filling device, a water-cooled jacket device, and an electric heating device. It can be flexibly selected or combined according to the processing temperature requirements of different plastic raw materials. During operation, the stirring temperature, intensity, and time of the cold mixing and hot mixing stages are controlled by the corresponding control parameters. It can be customized according to the material being mixed and has strong versatility.

[0039] Example 2: This embodiment provides an automatic plastic mixing system. The automatic plastic mixing system described in the above embodiment further includes: The main control system is used for data processing and overall control of the automatic plastic mixing system; An automatic base material filling mechanism is used to automatically fill base material according to preset control parameters; An automatic color masterbatch dispensing mechanism is used to automatically dispense color masterbatch according to preset control parameters; The mixing status monitoring device is used to monitor the real-time status of the materials and output the real-time status information of the materials. The discharge ends of the automatic base material dispensing mechanism and the automatic color masterbatch dispensing mechanism are respectively connected to the feed end of the plastic mixing mechanism. The monitoring part of the mixing status monitoring device is arranged inside the plastic mixing mechanism. The control end of the plastic mixing mechanism, the control end of the automatic base material dispensing mechanism, the control end of the automatic color masterbatch dispensing mechanism, and the signal output end of the mixing status monitoring device are respectively electrically connected to the main control system. The main control system outputs control signals to the plastic mixing mechanism, the automatic base material dispensing mechanism, and the automatic color masterbatch dispensing mechanism according to the preset control parameters based on the real-time status information returned by the mixing status monitoring device, so as to execute the automatic plastic mixing operation.

[0040] When this embodiment is in operation, it can realize a series of tasks such as automatic proportioning and injection of base material and color masterbatch, automatic control of the mixing process, and real-time monitoring and feedback of mixing quality. It has a high degree of automation. The process parameters can be dynamically adjusted through the main control system to ensure the mixing quality, reduce manual intervention, improve production consistency, and adapt to the needs of intelligent manufacturing and industrial automation.

[0041] Preferably, the mixing status monitoring device is equipped with at least one of the following: a uniformity monitoring terminal for monitoring material uniformity, a temperature monitoring terminal for monitoring real-time material temperature, a moisture monitoring terminal for monitoring material moisture content, and an electrostatic monitoring terminal for monitoring material static electricity. During operation, the mixing process status can be fully grasped through multi-parameter monitoring, abnormalities can be detected in time, and early warnings can be given through temperature, moisture, and electrostatic monitoring to reduce scrap rate.

[0042] The beneficial technical effects of this embodiment include: the present invention can realize both hot and cold mixing of base materials and color masterbatches, and is applicable to the mixing of various materials. At the same time, by arranging mixing compartments in the mixing tank, the mixing of materials and the storage of uniformly stirred materials can be carried out simultaneously, realizing segmented mixing, improving mixing uniformity and process controllability. Furthermore, the discharge end of the plastic mixing mechanism can be directly installed on the inlet end of the injection molding mechanism, eliminating the need for manual bagging and handling, saving manpower and resources, and avoiding temperature fluctuations, contamination, and efficiency losses caused by material transfer between different equipment. The mixing tank is installed on the rotating part of the mounting frame with an adjustable tilt angle, making it easy to adapt to different material characteristics, improving mixing effect and discharge smoothness. It is compatible with the mixing of powders and granules, has strong versatility, and can realize fully automatic mixing of base materials and color masterbatches.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A plastic mixing mechanism, characterized in that: The system includes a mixing tank (1) for placing and cold-mixing base material and color masterbatch, a mixing compartment (2) for placing and hot-mixing base material and color masterbatch, a first stirring mechanism (3) for stirring hot-mixing materials, a second stirring mechanism (4) for stirring cold-mixing materials, and a mounting frame (5) for installing and adjusting the tilt angle of the mixing tank (1). The mixing compartment (2) is installed inside the mixing tank (1). The stirring part of the first stirring mechanism (3) is arranged inside the mixing compartment (2), and the stirring part of the second stirring mechanism (4) is arranged inside the mixing tank (1). The tilt angle of the mixing tank (1) is adjustablely limited and mounted on the rotating part of the mounting frame (5). The mixing compartment (2) is connected to the mixing tank (1) after the materials contained therein are stirred evenly. Both the mixing compartment (2) and the mixing tank (1) are equipped with temperature control devices.

2. The plastic mixing mechanism according to claim 1, characterized in that: The mixing compartment (2) includes an inner compartment (21), an outer compartment (22), and a compartment drive device (23). The outer compartment (22) is fitted around the inner compartment (21). The inner compartment (21) is provided with a plurality of first partitions (211) arranged around each other at intervals. A first window for material to pass through is provided between adjacent first partitions (211). The outer compartment (22) is provided with a plurality of second partitions (221) arranged around each other. The two windows are arranged at intervals, with a second window corresponding to a first window between several second partitions (221). The inner chamber (21) is connected to the output part of the partition drive device (23) through a transmission assembly and rotates under the drive of the partition drive device (23). The first window and the second window are aligned with each other under the drive of the partition drive device (23) to connect the mixing partition (2) and the mixing tank (1), or they are staggered to close the mixing partition (2) and the mixing tank (1).

3. The plastic mixing mechanism according to claim 2, characterized in that: Each first partition (211) has a first guide plate (2111) on one side that is inclined toward the interior of the inner chamber (21) for guiding materials into or out of the mixing chamber (2). Each second partition (221) has a second guide plate (2211) on one side that is inclined toward the interior of the outer chamber (22) for guiding materials into or out of the mixing chamber (2). The other side of the first partition (211) is connected to the second guide plate (2211) when the mixing chamber (2) is closed. The other side of the second partition (221) is connected to the first guide plate (2111) when the mixing chamber (2) is closed.

4. A plastic mixing mechanism according to claim 3, characterized in that: The first partition (211) and the second partition (221) are arranged to extend from bottom to top in a clockwise or counterclockwise direction, respectively. On the other side of each first partition (211), a third guide plate (2112) for lifting or lowering materials is arranged to extend away from the inner chamber (21). On the other side of each second partition (221), a fourth guide plate (2212) for lifting or lowering materials is arranged to extend away from the outer chamber (22).

5. A plastic mixing mechanism according to claim 4, characterized in that: The outer chamber (22) is rotatably fitted around the inner chamber (21) and is connected to the output part of the partition drive device (23) through the inner chamber (21). The outer chamber (22) lifts or lowers the material under the drive of the partition drive device (23).

6. A plastic mixing mechanism according to claim 1, characterized in that: The first stirring mechanism (3) includes several first stirring blades (31) for lifting materials, a first stirring transmission rod (32) and a first stirring drive device (33). The first stirring transmission rod (32) is rotatably limited and installed at the top of the inside of the mixing tank (1). Several first stirring blades (31) are sequentially mounted around the first stirring transmission rod (32) and are connected to the output part of the first stirring drive device (33) through the first stirring transmission rod (32). The second stirring mechanism (4) includes several second stirring blades (41) for lifting materials, a second stirring transmission rod (42) and a second stirring drive device (43). The second stirring transmission rod (42) is rotatably limited and installed at the bottom of the inside of the mixing tank (1). Several second stirring blades (41) are sequentially mounted around the second stirring transmission rod (42) and are connected to the output part of the second stirring drive device (43) through the second stirring transmission rod (42).

7. A plastic mixing mechanism according to claim 6, characterized in that: The second stirring mechanism (4) also includes a number of stirring ring plates (44) for lowering the material. The stirring ring plates (44) are arranged around the second stirring blade (41) from bottom to top in a clockwise or counterclockwise direction and are located near the inner wall of the mixing tank (1). The inclination direction of the stirring ring plates (44) is opposite to the inclination direction of the second stirring blade (41).

8. A plastic mixing mechanism according to claim 1, characterized in that: The mounting frame (5) includes a rotation drive device (51), a fixed mounting frame (52) and a rotating mounting frame (53). The rotating mounting frame (53) is rotatably mounted inside the fixed mounting frame (52) and is connected to the output part of the rotation drive device (51) via a transmission assembly. The mixing tank (1) is mounted on the rotating mounting frame (53).

9. An automatic plastic mixing system, comprising a plastic mixing mechanism as described in any one of claims 1 to 8, characterized in that, Also includes: The main control system is used for data processing and overall control of the automatic plastic mixing system; An automatic base material filling mechanism is used to automatically fill base material according to preset control parameters; An automatic color masterbatch dispensing mechanism is used to automatically dispense color masterbatch according to preset control parameters; The mixing status monitoring device is used to monitor the real-time status of the materials and output the real-time status information of the materials. The discharge ends of the automatic base material dispensing mechanism and the automatic color masterbatch dispensing mechanism are respectively connected to the feed end of the plastic mixing mechanism. The monitoring part of the mixing status monitoring device is arranged inside the plastic mixing mechanism. The control end of the plastic mixing mechanism, the control end of the automatic base material dispensing mechanism, the control end of the automatic color masterbatch dispensing mechanism, and the signal output end of the mixing status monitoring device are respectively electrically connected to the main control system. The main control system outputs control signals to the plastic mixing mechanism, the automatic base material dispensing mechanism, and the automatic color masterbatch dispensing mechanism according to the preset control parameters based on the real-time status information returned by the mixing status monitoring device, so as to execute the automatic plastic mixing operation.

10. The automatic plastic mixing system according to claim 9, characterized in that: The mixing state monitoring device is provided with at least one of the following: a uniformity monitoring terminal for monitoring material uniformity, a temperature monitoring terminal for monitoring real-time material temperature, a moisture monitoring terminal for monitoring material moisture content, and an electrostatic monitoring terminal for monitoring material static electricity.

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