Batching and mixing system of casting machine

Abstract

The utility model relates to the technical field of batching and mixing of casting machines, and provides a batching and mixing system of a casting machine, which comprises a screw extruder, a mixing barrel and a plurality of first hoppers, the plurality of first hoppers are communicated with the mixing barrel, a conveying structure is arranged at a discharge port of the mixing barrel, and a second hopper and a plurality of third hoppers are fixedly connected at a feed port of the screw extruder. The conveying structure is connected with the second hopper, the bottom of the second hopper and the bottom of the third hopper are both fixedly connected with spiral conveying mechanisms, and the tail ends of the spiral conveying mechanisms extend towards a feeding port of the screw extruder and extend to the feeding port of the screw extruder. According to the utility model, raw materials can be flexibly added or adjusted by arranging the second hopper and the third hopper, and large-scale adjustment on the whole ingredient mixing structure is not needed, so that additional materials are more quickly and conveniently added on the basis of the original formula, the adjustment time is obviously shortened, the production interruption is avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting machine batching and mixing, and specifically, to a casting machine batching and mixing system. Background Art

[0002] A casting machine is a key equipment widely used in the production fields of plastic films, coating materials, composite materials, etc. Its main function is to extrude the raw materials that have been heated and melted through a slot die head and form a film or sheet on a cooling roll.

[0003] During the production process of the casting machine, the batching and mixing system plays a crucial role. The main task of the batching and mixing system is to mix different types of raw materials in a specific proportion to ensure that the produced film or sheet meets specific physical and chemical property requirements.

[0004] The existing casting machine batching and mixing systems usually only include a single batching and mixing structure. Although this structural design is suitable for large-scale and continuous production scenarios, there are some deficiencies when dealing with temporary or small-scale production, especially when additional materials need to be temporarily added based on the existing formula. To add new raw materials or change the ratio, it is often necessary to adjust the original batching and mixing structure. However, performing these adjustments is not only time-consuming and laborious, but also the system must be restored to its original state after the adjustment is completed for the next round of normal production. This process will consume a large amount of time, lead to a decrease in production efficiency, increase the downtime and operating costs. Summary of the Utility Model

[0005] The utility model provides a casting machine batching and mixing system that can improve the adjustment speed and reduce the downtime to meet the high-efficiency and flexible requirements of modern industrial production.

[0006] The technical solution of the utility model is as follows:

[0007] A casting machine batching and mixing system includes a screw extruder, a mixing barrel, and a plurality of first hoppers. The plurality of first hoppers are communicated with the mixing barrel. A conveying structure is arranged at the discharge port of the mixing barrel. A second hopper and a plurality of third hoppers are fixedly connected at the feed port of the screw extruder. The second hopper and the plurality of third hoppers are circumferentially arranged around the feed port of the screw extruder. The conveying structure is connected with the second hopper. Spiral conveying mechanisms are fixedly connected to the bottoms of the second hopper and the third hoppers. The ends of the spiral conveying mechanisms extend towards the feed port of the screw extruder and extend into the feed port of the screw extruder.

[0008] Further, the conveying structure includes a blanking hopper and a conveyor belt. The feed inlet of the blanking hopper is communicated with the discharge outlet of the mixing barrel. The conveyor belt is located below the discharge outlet of the blanking hopper. One end of the conveyor belt away from the blanking hopper is connected to the second hopper.

[0009] Further, a hoist for upwardly conveying materials is provided at one end of the conveyor belt away from the blanking hopper. The feed end of the hoist is connected to one end of the conveyor belt away from the blanking hopper. The discharge end of the hoist is connected to the second hopper. The conveyor belt is connected to the second hopper through the hoist.

[0010] Further, a first stirring barrel is provided above the feed inlet of the second hopper. A first stirrer is provided in the first stirring barrel. The first stirring barrel is fixedly connected to the hoist. The feed inlet of the first stirring barrel is connected to the discharge end of the hoist. The discharge outlet of the first stirring barrel is communicated with the second hopper.

[0011] Further, an opening and closing mechanism is fixedly connected to the discharge outlet of the first stirring barrel. The opening and closing mechanism includes two opening and closing plates and a driver connected to the opening and closing plates. The two opening and closing plates and the driver are respectively located on both sides of the discharge outlet of the first stirring barrel.

[0012] Further, a second stirring barrel is fixedly connected to the feed inlet of the screw extruder. A second stirrer is provided in the second stirring barrel. The end of the screw conveyor extends into the second stirring barrel and extends into the second stirring barrel.

[0013] The working principle and beneficial effects of the present utility model are as follows:

[0014] By adding a second hopper and a number of third hoppers at the feed inlet of the screw extruder, the present utility model uses the second hopper to carry the original mixed materials in the mixing barrel, and uses the third hopper to carry the added materials. Finally, the original materials and the added materials are conveyed into the screw extruder through the screw conveyor. By setting the second hopper and the third hopper, the raw materials can be added or adjusted flexibly without large-scale adjustment of the entire batching and mixing structure, making it faster and more convenient to add additional materials on the basis of the original formula, significantly reducing the adjustment time, avoiding production interruption, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a front view of the present utility model;

[0018] Figure 3 The upper view of the present utility model;

[0019] Figure 4 The side view of the present utility model;

[0020] Figure 5 is Figure 1 the enlarged view of part A of

[0021] Figure 6 is Figure 2 the enlarged view of part B of

[0022] In the figure: 1, screw extruder; 2, mixing barrel; 3, first hopper; 4, conveyor belt; 5, second hopper; 6, third hopper; 7, elevator; 8, first mixing barrel; 9, second mixing barrel; 21, blanking funnel; 56, screw conveying mechanism; 81, first stirrer; 82, opening and closing plate; 83, driver; 91, second stirrer. Specific embodiments

[0023] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0024] As Figures 1 to 6 shown, this embodiment proposes a casting machine batching and mixing system, including a screw extruder 1, a mixing barrel 2, and a plurality of first hoppers 3. The plurality of first hoppers 3 are communicated with the mixing barrel 2. A conveying structure is arranged at the discharge port of the mixing barrel 2. A second hopper 5 and a plurality of third hoppers 6 are fixedly connected to the feed port of the screw extruder 1. The second hopper 5 and the plurality of third hoppers 6 are arranged circumferentially around the feed port of the screw extruder 1. The conveying structure is connected to the second hopper 5. Screw conveying mechanisms 56 are fixedly connected to the bottoms of the second hopper 5 and the third hoppers 6. The ends of the screw conveying mechanisms 56 extend towards the feed port of the screw extruder 1 and extend to the feed port of the screw extruder 1.

[0025] The screw extruder 1 is the core component of the casting machine, responsible for heating, melting the mixed raw materials, and extruding them evenly to form a film or sheet. The mixing barrel 2 is used to mix different raw materials from different first hoppers 3 to make them into a uniform mixed material, which is ready to be sent to the screw extruder 1 for processing. The first hopper 3 is used to store and convey the main basic raw materials, and these raw materials flow from the first hopper 3 into the mixing barrel 2 for mixing. The conveying structure connects the mixing barrel 2 and the second hopper 5, and is responsible for conveying the mixed raw materials in the mixing barrel 2 to the second hopper 5 of the screw extruder 1. The second hopper 5 is used to receive the raw materials from the mixing barrel 2, and conveys the raw materials to the screw extruder 1 through the screw conveying mechanism 56. The third hopper 6 is used to store and convey special raw materials that need to be added temporarily or adjusted. It allows for flexible addition of special raw materials without disturbing the main batching system, realizing rapid adjustment of the formula and diversified production. The screw conveying mechanism 56 is located at the bottom of the second hopper 5 and the third hopper 6, and is used to convey the raw materials from the hopper to the feed inlet of the screw extruder 1 at a constant speed; the screw conveying mechanism 56 ensures the precise conveyance of the raw materials, and can adjust the conveying speed according to needs, thereby controlling the supply amount of each raw material and ensuring the accuracy of the mixing ratio. The screw conveying mechanism 56 is a prior art, and it generally includes a long screw and a closed conveying pipeline. The rotation of the screw generates a thrust to convey the material along the pipeline. Specifically, this embodiment will not be elaborated further. The weight of each material entering the screw extruder 1 can be calculated through the screw conveying mechanism 56. The weight (W) of the conveyed material can be calculated by the following formula: W = A × V × ρ, where W is the weight of the material, A is the cross-sectional area of the screw, V is the rotation speed (RPM) of the screw, and ρ is the density of the material (mass per unit volume). Additionally, a weighing device can be set under the screw conveying mechanism 56, and both the second hopper 5 and the third hopper 6 are set on the weighing device. The materials in the second hopper 5 and the third hopper 6 are weighed through the weighing device, so as to calculate the weight of the conveyed material. The weighing device can adopt a capacitive weighing sensor. The capacitive weighing sensor has the characteristics of strong anti-interference ability and fast response speed. The capacitive weighing sensor is a prior art, and specifically, this embodiment will not be elaborated further.

[0026] In this embodiment, the conveying structure includes a blanking funnel 21 and a conveyor belt 4. The feed inlet of the blanking funnel 21 is communicated with the discharge outlet of the mixing barrel 2. The conveyor belt 4 is located below the discharge outlet of the blanking funnel 21. A hoist 7 for upwardly conveying materials is provided at one end of the conveyor belt 4 away from the blanking funnel 21. The feed end of the hoist 7 is connected to the end of the conveyor belt 4 away from the blanking funnel 21. The discharge end of the hoist 7 is connected to the second hopper 5. The conveyor belt 4 is connected to the second hopper 5 through the hoist 7. A first stirring barrel 8 is provided above the feed inlet of the second hopper 5. A first stirrer 81 is arranged in the first stirring barrel 8. The first stirring barrel 8 is fixedly connected to the hoist 7. The feed inlet of the first stirring barrel 8 is connected to the discharge end of the hoist 7. The discharge outlet of the first stirring barrel 8 is communicated with the second hopper 5. A switching mechanism is fixedly connected to the discharge outlet of the first stirring barrel 8. The switching mechanism includes two switching plates 82 and a driver 83 connected to the switching plates 82. The two switching plates 82 and the driver 83 are respectively located on both sides of the discharge outlet of the first stirring barrel 8.

[0027] The blanking hopper 21 is used to guide the materials in the mixing barrel 2 onto the conveyor belt 4, ensuring the smooth discharge of the materials from the mixing barrel 2 and their entry into the subsequent conveying process. The blanking hopper 21 can effectively control the flow direction and speed of the materials, prevent material spillage or blockage, and improve the continuity and stability of the conveying. The conveyor belt 4 is responsible for transporting the materials discharged from the blanking hopper 21 to the elevator 7. As the initial stage of material transportation, the setting of the conveyor belt 4 realizes the smooth transportation of the materials, optimizes the material flow direction through the adjustment of the conveying path, helps to improve the conveying efficiency of the entire system, and can also divert the materials through the conveyor belt 4. The conveyor belt 4 not only transports the materials from the blanking hopper 21 to the elevator 7 but also has a diverting function. The diverting function enables the conveyor belt 4 to transport the materials to different destinations or hoppers as needed; the conveyor belt 4 is a prior art and consists of multiple components, including a driving roller, a driven roller, a conveyor belt body, a tensioning device, and a driving device (such as a motor), etc. Specifically, this embodiment will not be elaborated further. The elevator 7 transports the materials conveyed by the conveyor belt 4 upward to the first stirring barrel 8, overcoming the gravity of the materials and realizing vertical transportation. The setting of the elevator 7 not only expands the spatial direction of material transportation but also ensures the smooth transportation of the materials in a system with a large height difference, providing convenience for subsequent stirring and mixing; the elevator 7 is a prior art. The elevator 7 in this embodiment adopts a bucket elevator 7. Through the buckets installed on the traction member (such as a belt or a chain), the materials enter the buckets from the bottom feed port. As the buckets are lifted, the materials are brought to the top discharge port, and the materials are unloaded using gravity or centrifugal force. More specifically, this embodiment will not be elaborated further. The first stirrer 81 in the first stirring barrel 8 performs preliminary mixing on the incoming materials to ensure the uniformity of the materials before entering the second hopper 5. The setting of the first stirring barrel 8 and the stirrer enables the materials during transportation to be further uniformly mixed, ensuring the accuracy of the formula and the homogeneity of the materials, and improving the quality of the final product. The opening and closing mechanism controls the opening and closing of the discharge port of the first stirring barrel 8 through two opening and closing plates 82 and a driver 83, thereby controlling the time and speed of the materials flowing into the second hopper 5. The precise control of the opening and closing mechanism ensures the accuracy and continuity of the materials entering the second hopper 5, avoids excessive or insufficient materials from entering, and guarantees the stability of subsequent processing; the driver 83 can adopt an electric push rod or a hydraulic rod to realize the movement of the opening and closing plate 82. The electric push rod and the hydraulic rod are both prior arts, and this embodiment will not be elaborated further.

[0028] In this embodiment, a second stirring barrel 9 is fixedly connected to the feed inlet of the screw extruder 1. A second stirrer 91 is arranged inside the second stirring barrel 9. The end of the spiral conveying mechanism 56 extends into the second stirring barrel 9 and reaches inside the second stirring barrel 9. The second stirring barrel 9 is located at the feed inlet of the screw extruder 1. The second stirrer 91 is used to perform the final mixing of the material before it enters the extruder to ensure the uniformity of the material before extrusion. The setting of the second stirring barrel 9 and the stirrer provides the last quality guarantee for the material before it enters the screw extruder 1, ensuring the uniformity of the material during the extrusion process, thereby improving the quality of the extruded product. In this embodiment, both the first stirrer 81 and the second stirrer 91 can adopt ribbon stirrers. A ribbon stirrer usually consists of a stirring barrel and ribbon blades installed on the main shaft. A driving motor is also arranged on the stirring barrel, and the driving motor is connected to the main shaft. Specifically, the details of this embodiment will not be elaborated here.

[0029] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tape casting machine batching and mixing system, comprising a screw extruder (1), a mixing barrel (2), and a plurality of first hoppers (3), wherein the plurality of first hoppers (3) are connected to the mixing barrel (2), characterized in that: The discharge port of the mixing barrel (2) is provided with a conveying structure, and a second hopper (5) and a plurality of third hoppers (6) are fixedly connected to the feed port of the screw extruder (1), and the second hopper (5) and the plurality of third hoppers (6) are circumferentially arranged around the feed port of the screw extruder (1). The conveying structure is connected to the second hopper (5), and the bottoms of the second hopper (5) and the third hopper (6) are fixedly connected with a screw conveying mechanism (56), and the end of the screw conveying mechanism (56) extends toward the feed port of the screw extruder (1) and extends to the feed port of the screw extruder (1).

2. A tape casting machine batching and mixing system according to claim 1, characterized in that: The conveying structure comprises a feeding hopper (21) and a conveyor belt (4); the feeding port of the feeding hopper (21) is connected to the discharging port of the mixing barrel (2); the conveyor belt (4) is located at the lower side of the discharging port of the feeding hopper (21); and the end of the conveyor belt (4) away from the feeding hopper (21) is connected to the second hopper (5).

3. A tape casting machine batching and mixing system according to claim 2, characterized in that: An elevator (7) for conveying materials upward is provided at one end of the conveyor belt (4) away from the discharge hopper (21); a feed end of the elevator (7) is connected to one end of the conveyor belt (4) away from the discharge hopper (21); a discharge end of the elevator (7) is connected to the second hopper (5); and the conveyor belt (4) is connected to the second hopper (5) via the elevator (7).

4. A tape casting machine batching and mixing system according to claim 3, characterized in that: A first stirring barrel (8) is provided on the upper side of the feed port of the second hopper (5), a first stirrer (81) is provided in the first stirring barrel (8), the first stirring barrel (8) is fixedly connected to the elevator (7), the feed port of the first stirring barrel (8) is connected to the discharge end of the elevator (7), and the discharge port of the first stirring barrel (8) is communicated with the second hopper (5).

5. A tape casting machine batching and mixing system according to claim 4, characterized in that: The discharge port of the first mixing barrel (8) is fixedly connected to an opening and closing mechanism, which comprises two opening and closing plates (82) and a driver (83) connected to the opening and closing plates (82), and the two opening and closing plates (82) and the driver (83) are respectively located on both sides of the discharge port of the first mixing barrel (8).

6. A tape casting machine batching and mixing system according to claim 1, characterized in that: The feed port of the screw extruder (1) is fixedly connected to a second stirring barrel (9), a second stirrer (91) is arranged inside the second stirring barrel (9), and the end of the screw conveying mechanism (56) extends toward the inside of the second stirring barrel (9) and extends into the second stirring barrel (9).

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