A plastic powder extrusion device

Abstract

The application relates to a plastic powder extruding device which comprises an operation table and conveying mechanisms, heating mechanisms, cold pressing mechanisms and air cooling mechanisms arranged on the operation table. The heating mechanisms comprise a heating main body, an insulating shell and a fan assembly. The insulating shell is fixed on the operation table, the heating main body and the fan assembly are arranged in the insulating shell, the fan assembly is located on the side of the heating main body which is away from the conveying mechanisms, and the fan assembly is annularly arranged on the outside of the heating main body. The material is sequentially subjected to the processing procedures of heating, cold pressing and air cooling through the arrangement of the conveying mechanisms, the heating mechanisms, the cold pressing mechanisms and the air cooling mechanisms on the operation table. The insulating shell arranged on the heating mechanisms can insulate heat to prevent the operator from being scalded, and a heat dissipation channel is formed at the same time. The fan assembly can be used for targeted air cooling, so that the heating main body is prevented from being damaged due to excessively high temperature.

Description

Technical Field

[0001] This application relates to the field of plastic powder processing technology, and in particular to a plastic powder extrusion apparatus. Background Technology

[0002] In the manufacturing process of plastic powder, the extrusion unit is one of the core equipment for realizing the plasticization and morphological processing of raw materials. Under normal circumstances, the production of plastic powder needs to go through the stages of raw material mixing, melt extrusion, cooling and crushing. Among them, the melt extrusion stage is to feed the uniformly mixed solid raw materials (such as resin, additives, pigments, etc.) into the extrusion unit, and continuously heat the material through the heating mechanism inside the unit, so that the material gradually melts to form a melt with a certain fluidity. Then the melt is extruded and shaped, providing the basic material form for subsequent cooling and crushing processes.

[0003] However, in existing plastic powder extrusion devices, the heating mechanism for materials often focuses only on heating efficiency and lacks the necessary heat dissipation function. During the long-term operation of the extrusion device, the heating mechanism continuously generates heat, which accumulates and causes the heating mechanism itself to become too hot and the heat to become too concentrated. The excessively high temperature will accelerate the aging and damage of the heating mechanism and surrounding components, shorten the service life of the equipment, increase the maintenance cost and downtime for repair, and have an adverse effect on the continuous and stable production of plastic powder. Utility Model Content

[0004] This application provides a plastic powder extrusion device with good heat dissipation effect.

[0005] The powder extrusion device provided in this application adopts the following technical solution: A plastic powder extrusion device includes an operating table and a conveying mechanism, a heating mechanism, a cold pressing mechanism, and an air cooling mechanism disposed on the operating table. The heating mechanism is located at the front end of the operating table, the conveying mechanism is located below the discharge end of the heating mechanism, the cold pressing mechanism is located between the heating mechanism and the conveying mechanism, and the air cooling mechanism is located above the conveying mechanism and on the side of the cold pressing mechanism facing away from the heating mechanism. The heating mechanism includes a heating body, a heat insulation shell, and a fan assembly. The heat insulation shell is fixed on the operating table, and the heating body and the fan assembly are disposed within the heat insulation shell. The fan assembly is located on the side of the heating body facing away from the conveying mechanism and is arranged around the outside of the heating body.

[0006] Preferably, the heating body is a cylindrical structure, the heat insulation shell is a hollow cuboid structure, the fan assembly includes four fans, the cylindrical structure and the hollow cuboid structure are coaxially arranged, the four fans are arranged between the hollow cuboid structure and the cylindrical structure, and are respectively arranged at the four interior corners of the hollow cuboid.

[0007] Preferably, the heating body includes a heat-conducting shell, which is sleeved on the outside of the heating body and located between the heating body and the fan assembly.

[0008] Preferably, the heating body has an extension at the end facing away from the fan, the extension bends downward and its opening faces downward; A scraper is driven to be connected to the heat insulation shell, and the blade of the scraper is flush with the opening end of the extension.

[0009] Preferably, the cold pressing mechanism includes two chrome-plated cooling rollers, which are arranged in parallel and driven to be connected to the conveying mechanism, and form a cold pressing gap, which is located directly below the opening end of the extension.

[0010] Preferably, the air-cooling mechanism includes a first cover plate and a second cover plate fixed on the conveying mechanism. A first fan is provided on the first cover plate and the first fan is in communication with the interior of the first cover plate. A second fan is provided on the second cover plate and the second fan is in communication with the interior of the second cover plate.

[0011] In summary, this application includes at least one of the following beneficial technical effects: 1. This application sets up a conveying mechanism, a heating mechanism, a cold pressing mechanism and a wind-cooling mechanism on the operating table, so that the material passes through the heating, cold pressing and wind-cooling processing steps in sequence. By setting a heat insulation shell on the heating mechanism, heat can be isolated to prevent the operator from being burned. At the same time, a heat dissipation channel is formed. The fan assembly can provide targeted airflow heat dissipation to prevent the heating body from being damaged due to excessive temperature.

[0012] 2. By setting a scraper flush with the opening end of the extension, the material blocking the opening end is scraped off, preventing the residue from cooling and solidifying in a low-temperature environment and causing blockage at the opening end. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of this application.

[0014] Figure 2 This is a schematic diagram of the overall structure from another angle of a preferred embodiment of this application.

[0015] Figure 3 yes Figure 2 Cross-sectional view along AA.

[0016] Figure 4 This is a schematic diagram of the fan assembly in a preferred embodiment of this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Operating table; 2. Conveying mechanism; 3. Heating mechanism; 31. Heating body; 32. Heat insulation shell; 33. Fan assembly; 34. Heat-conducting shell; 35. Extension; 4. Cold pressing mechanism; 5. Air cooling mechanism; 51. First cover plate; 52. Second cover plate; 53. First fan; 54. Second fan; 6. Scraper. Detailed Implementation

[0018] The present application will be further described in detail below with reference to the accompanying drawings.

[0019] This application provides a powder extrusion apparatus, such as Figures 1 to 4 As shown, it includes an operating table 1 and a conveying mechanism 2, a heating mechanism 3, a cold pressing mechanism 4 and an air cooling mechanism 5 disposed on the operating table 1. The heating mechanism 3 is located at the front end of the operating table 1, the conveying mechanism 2 is located below the discharge end of the heating mechanism 3, the cold pressing mechanism 4 is located between the heating mechanism 3 and the conveying mechanism 2, and the air cooling mechanism 5 is located above the conveying mechanism 2 and on the side of the cold pressing mechanism 4 facing away from the heating mechanism 3.

[0020] After the material enters the heating mechanism 3, it is heated and melted into a continuous and uniform melt. The melt falls from the discharge end into the cold pressing mechanism 4, where it is pressed and cooled to form a brittle sheet solid. It is then conveyed to the air-cooling mechanism 5 via the conveying mechanism 2. The air-cooling mechanism 5 further dries and cools the brittle sheet solid to reduce its moisture content, making it easier to grind the brittle sheet solid into powder in the future.

[0021] like Figures 2 to 4 As shown, the heating mechanism 3 includes a heating body 31, a heat insulation shell 32, a heat conduction shell 34, and a fan assembly 33. The heat insulation shell 32 is fixed on the operating table 1. The heating body 31, the heat conduction shell 34, and the fan assembly 33 are arranged inside the heat insulation shell 32. The heat conduction shell 34 is sleeved on the outside of the heating body 31. The fan assembly 33 is located on the side of the heating body 31 facing away from the conveying mechanism 2 and is arranged around the outside of the heat conduction shell 34. Specifically, the heating body 31 and the heat conduction shell 34 are both cylindrical structures, the heat insulation shell 32 is a hollow cuboid structure, and the fan assembly 33 includes four fans. The cylindrical structure and the hollow cuboid structure are coaxially arranged. The four fans are arranged between the hollow cuboid structure and the cylindrical structure and are respectively arranged at the four inner corners of the hollow cuboid. The heating body 31 includes a heating tube with a heating sleeve, and a spiral stirrer is arranged inside the heating tube.

[0022] like Figure 2 As shown, the heating body 31 has an extension 35 at the end facing away from the fan. The extension 35 is bent downwards with its opening facing downwards. A scraper 6 is driven and connected to the heat insulation housing 32. The blade of the scraper 6 is flush with the opening end of the extension 35. The scraper 6 can be driven to connect with the opening end and scrape off the residue at the opening end.

[0023] After the material enters the heating tube, it forms a continuous and uniform melt after passing through the heating jacket and the spiral stirrer. The melt falls from the opening end of the extension 35 to the cold pressing mechanism 4. After a batch of material has completely melted and fallen, the scraper 6 can be driven to scrape off the residue that has become melt, preventing the residue from solidifying and becoming stuck at the opening end in a low-temperature environment, causing blockage. During the heating process, the heat-conducting plate can quickly absorb the heat from the heating body 31, concentrating the heat on the heat-conducting plate. The heat insulation shell 32 can insulate the heat to prevent the operator from being burned, while forming a heat dissipation channel. The fan assembly 33 can provide targeted airflow for heat dissipation, preventing the heating body 31 from being damaged due to heat concentration in the heating tube and excessive temperature.

[0024] like Figure 1 As shown, the cold pressing mechanism 4 includes two chrome-plated cooling rollers, which are arranged in parallel and driven to be connected to the conveying mechanism 2. They can rotate axially and form a cold pressing gap, which is located directly below the opening end of the extension 35. The air cooling mechanism 5 includes a first cover plate 51 and a second cover plate 52 fixed to the conveying mechanism 2. A first fan 53 is provided on the first cover plate 51 and communicates with the interior of the first cover plate 51. A second fan 54 is provided on the second cover plate 52 and communicates with the interior of the second cover plate 52.

[0025] When the melt falls from the opening end of the extension 35 into the cold pressing gap, it is squeezed and cooled by two chrome-plated cooling rollers, forming a brittle sheet solid and sliding down onto the conveying mechanism 2. It then passes through the first cover plate 51 and the second cover plate 52 in sequence, and is dried by the action of the first fan 53 and the second fan 54, becoming a more brittle sheet solid that is easier to grind into a finer powder solid.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A plastic powder extrusion device, characterized in that: It includes an operating table (1) and a conveying mechanism (2), a heating mechanism (3), a cold pressing mechanism (4) and an air cooling mechanism (5) disposed on the operating table (1). The heating mechanism (3) is located at the first end of the operating table (1), the conveying mechanism (2) is located below the discharge end of the heating mechanism (3), the cold pressing mechanism (4) is located between the heating mechanism (3) and the conveying mechanism (2), and the air cooling mechanism (5) is located above the conveying mechanism (2) and on the side of the cold pressing mechanism (4) facing away from the heating mechanism (3). The heating mechanism (3) includes a heating body (31), a heat insulation shell (32), and a fan assembly (33). The heat insulation shell (32) is fixed on the operating table (1). The heating body (31) and the fan assembly (33) are disposed inside the heat insulation shell (32). The fan assembly (33) is located on the side of the heating body (31) facing away from the conveying mechanism (2) and is arranged around the outside of the heating body (31).

2. The plastic powder extrusion device according to claim 1, characterized in that: The heating body (31) is a cylindrical structure, the heat insulation shell (32) is a hollow cuboid structure, the fan assembly (33) includes four fans, the cylindrical structure and the hollow cuboid structure are coaxially arranged, the four fans are arranged between the hollow cuboid structure and the cylindrical structure, and are respectively arranged at the four inner corners of the hollow cuboid.

3. The powder extrusion apparatus according to claim 2, characterized in that: The heating body (31) includes a heat-conducting shell (34), which is sleeved on the outside of the heating body (31) and located between the heating body (31) and the fan assembly (33).

4. The powder extrusion apparatus according to claim 3, characterized in that: The heating body (31) has an extension (35) at the end facing away from the fan. The extension (35) is bent downwards and its opening faces downwards. A scraper (6) is driven to be connected to the heat insulation shell (32), and the blade of the scraper (6) is flush with the opening end of the extension (35).

5. A powder extrusion apparatus according to claim 4, characterized in that: The cold pressing mechanism (4) includes two chrome-plated cooling rollers, which are arranged in parallel and driven to be connected to the conveying mechanism (2), and form a cold pressing gap, which is located directly below the opening end of the extension (35).

6. The powder extrusion apparatus according to claim 1, characterized in that: The air-cooling mechanism (5) includes a first cover plate (51) and a second cover plate (52) fixed on the conveying mechanism (2). A first fan (53) is provided on the first cover plate (51) and the first fan (53) is in communication with the interior of the first cover plate (51). A second fan (54) is provided on the second cover plate (52) and the second fan (54) is in communication with the interior of the second cover plate (52).

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