A continuous foaming aluminum-plastic panel foaming device

Abstract

The application provides a continuous foaming aluminum-plastic panel foaming device, and belongs to the technical field of foaming aluminum. The continuous foaming aluminum-plastic panel foaming device comprises a driving mechanism, a stirring mechanism, an extruding mechanism and a circulating heat dissipation mechanism. The driving mechanism comprises a motor and a gear box. The output end of the motor is connected with the gear box in power. A transmission shaft is rotatably connected to the gear box. The output end of the motor is connected with the transmission shaft in power through the gear box. The transmission shaft is fixedly connected with the screw rod of the extruding mechanism. The stirring mechanism is communicated with the extruding mechanism. The transmission shaft is provided with a heat insulation mechanism. The heat insulation mechanism comprises a heat insulation box and a heat conduction sleeve. The application has the following effects: the lubricating oil in the gear box is circulated to the heat insulation mechanism by the circulating heat dissipation mechanism to directly cool the transmission shaft. High-temperature difference is utilized to realize efficient heat dissipation. The cooled lubricating oil is returned to the gear box, thereby avoiding the local overheating of the gear box.

Description

Technical Field

[0001] This application relates to the field of foamed aluminum technology, and more specifically, to a continuous foaming aluminum-plastic composite board foaming device. Background Technology

[0002] In continuous foamed aluminum production, the twin-screw foamer is a key piece of equipment. A twin-screw foamer typically includes a drive mechanism, a mixing mechanism, and an extrusion mechanism. The mixing mechanism stirs and mixes the aluminum material and foaming agent, heating it to form a liquid that enters the extrusion mechanism. The drive mechanism drives the screw in the extrusion mechanism to rotate. The 700°C liquid aluminum mixed with the foaming agent is propelled forward by the screw, where it is thoroughly extruded, mixed, and foamed. This heat is transferred to the gearbox and motor via the drive shaft. The motor and gearbox are highly sensitive to temperature, typically requiring operating temperatures not to exceed a certain range; for example, the motor should generally not exceed 60-70°C, and the gearbox should not exceed 80-90°C. Although the drive shaft is designed with a heat-insulating material and coating, it still reaches temperatures exceeding 200°C. The heat transferred by the screw significantly increases the heat dissipation burden on the gearbox. If heat dissipation is inadequate, it will affect the performance and lifespan of the gearbox and motor, and may even lead to equipment failure, impacting the production efficiency and quality of continuous foamed aluminum.

[0003] In existing technologies, heat sinks are usually installed in the gearbox and motor housing to increase the heat dissipation area and accelerate heat dissipation. Although this integrated heat dissipation can keep the gearbox at the rated temperature, the heat in the gearbox is mainly concentrated at the drive shaft. Therefore, the temperature of the gears that are in contact with the drive shaft is significantly higher than the overall temperature of the gearbox, resulting in local overheating and affecting local mechanical performance. Utility Model Content

[0004] To overcome the above deficiencies, this application provides a continuous foaming aluminum composite panel foaming device, which aims to improve the problems mentioned in the background art.

[0005] This application provides a continuous foaming aluminum composite panel foaming device, including a driving mechanism, a stirring mechanism, an extrusion mechanism, and a circulating heat dissipation mechanism. The driving mechanism includes a motor and a gearbox. The output end of the motor is poweredly connected to the gearbox. A transmission shaft is rotatably connected to the gearbox. The output end of the motor is poweredly connected to the transmission shaft through the gearbox. The transmission shaft is fixedly connected to the screw of the extrusion mechanism. The stirring mechanism is connected to the extrusion mechanism. A heat insulation mechanism is provided on the transmission shaft. The heat insulation mechanism includes a heat insulation box and a heat-conducting sleeve. The transmission shaft movably passes through the heat insulation box. The heat-conducting sleeve is fixedly sleeved on the outer wall of the transmission shaft. The circulating heat dissipation mechanism circulates the lubricating oil in the gearbox to the heat insulation box.

[0006] In one specific implementation, the fins on the two heat-conducting sleeves are interlocked.

[0007] In the above process, when the drive shaft rotates, it will carry the lubricating oil, which will then gather and separate at the intersection, thus playing a stirring role and facilitating the rapid transfer of heat from the heat-conducting sleeve to the lubricating oil.

[0008] In one specific implementation, the drive shaft is hollow, and a heat-conducting block is expanded and tightened on the inner wall of the drive shaft.

[0009] In the above implementation process, the hollow drive shaft uses heat-conducting blocks to transfer the heat inside the drive shaft, thereby increasing the heat conduction area and improving the heat dissipation effect.

[0010] In one specific implementation, a heat pipe is fixedly connected between the heat-conducting block and the heat-conducting sleeve.

[0011] In the above implementation process, since the surface area of ​​the heat-conducting block is small, heat is transferred to the external heat-conducting jacket through the heat pipe. The fins on the heat-conducting jacket are used for rapid heat dissipation. The heat pipe is a nickel-based alloy heat pipe, which is filled with a high-temperature working fluid to transfer heat. Its principle is similar to the heat-conducting copper pipe on the heat exchanger of a graphics card.

[0012] In one specific implementation, the drive shaft has a through hole for the heat pipe to pass through, and the diameter of the through hole is larger than that of the heat pipe.

[0013] In the above process, the through hole allows external lubricating oil to enter the drive shaft, helping to dissipate internal heat.

[0014] In one specific implementation, the circulating heat dissipation mechanism includes an oil pump, which is mounted on the gearbox. The oil pump has an oil suction pipe and an oil spray pipe at its two ends, respectively. The oil suction pipe is connected to the bottom of the gearbox, and the oil spray pipe is connected to the inside of the heat insulation box.

[0015] In the above process, the oil pump draws lubricating oil from the gearbox and sprays it into the heat insulation box through the oil injection pipe to dissipate heat from the internal heat-conducting jacket and drive shaft.

[0016] In one specific implementation, the fuel injection pipe is located between the two heat-conducting sleeves, and nozzles are provided on both sides of the fuel injection pipe facing the two heat-conducting sleeves.

[0017] In the above process, when the fuel injection pipe injects fuel, it sprays directly towards the heat-conducting jacket at the top, which helps to transfer heat quickly.

[0018] In one specific implementation, the circulating heat dissipation mechanism further includes a heat exchanger installed on the outer wall of the gearbox. A return pipe is fixedly connected to the lower end of the insulation box. The return pipe is connected to the inlet of the heat exchanger, and the outlet of the heat exchanger is connected to the gearbox.

[0019] In the above process, the lubricating oil in the gearbox goes to the heat insulation box for cooling. Synthetic hydrocarbon lubricating oil or ester lubricating oil can be used. The lubricating oil in the gearbox dissipates heat to the drive shaft and heat-conducting jacket in the heat insulation box, and the temperature of the lubricating oil is rapidly increased. The high-temperature lubricating oil enters the heat exchanger through the return pipe. Due to the large temperature difference, the heat dissipation is faster. The cooled lubricating oil flows back into the gearbox for lubrication and heat dissipation. Thus, the heat insulation box and the gearbox share a single circulating heat dissipation mechanism, which simplifies the structure while meeting the heat dissipation requirements.

[0020] Compared with the prior art, the beneficial effects of this application are: the circulating heat dissipation mechanism circulates the lubricating oil in the gearbox to the heat insulation mechanism to directly cool the drive shaft, and the high temperature difference is used to achieve efficient heat dissipation. The cooled lubricating oil flows back into the gearbox, avoiding local overheating of the gearbox. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the continuous foaming aluminum composite panel foaming device provided in the embodiments of this application;

[0023] Figure 2 A schematic diagram illustrating the connection relationship between the gear and the heat insulation box provided for an embodiment of this application;

[0024] Figure 3 A schematic diagram of the cross-sectional structure of the heat insulation box provided for an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the drive shaft provided in the embodiments of this application.

[0026] In the diagram: 10-Drive mechanism; 11-Motor; 12-Gearbox; 13-Drive shaft; 20-Stirring mechanism; 30-Extrusion mechanism; 40-Circulating cooling mechanism; 41-Oil pump; 42-Oil suction pipe; 43-Oil injection pipe; 44-Heat exchanger; 45-Return pipe; 50-Insulation mechanism; 51-Insulation box; 52-Heat conductive jacket; 53-Heat conductive block; 54-Heat pipe. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0028] Please see Figures 1-4 This application provides a continuous foaming aluminum-plastic composite board foaming device, including a drive mechanism 10, a stirring mechanism 20, an extrusion mechanism 30, and a circulating heat dissipation mechanism 40. The drive mechanism 10 includes a motor 11 and a gearbox 12. The output end of the motor 11 is poweredly connected to the gearbox 12. A transmission shaft 13 is rotatably connected to the gearbox 12. The output end of the motor 11 is poweredly connected to the transmission shaft 13 through the gearbox 12. The transmission shaft 13 is fixedly connected to the screw of the extrusion mechanism 30. The stirring mechanism 20 is connected to the extrusion mechanism 30. A heat insulation mechanism 50 is provided on the transmission shaft 13. The heat insulation mechanism 50 includes a heat insulation box 51 and a heat-conducting sleeve 52. The transmission shaft 13 movably passes through the heat insulation box 51. The heat-conducting sleeve 52 is fixedly sleeved on the outer wall of the transmission shaft 13. The circulating heat dissipation mechanism 40 circulates the lubricating oil in the gearbox 12 to the heat insulation box 51. The circulating cooling mechanism 40 circulates the lubricating oil in the gearbox 12 to the heat insulation mechanism 50 to directly cool the drive shaft 13. The high temperature difference is used to achieve efficient heat dissipation. The cooled lubricating oil flows back to the gearbox 12, avoiding local overheating of the gearbox 12.

[0029] Please see Figures 1-4 The fins on the two heat-conducting sleeves 52 are intersected. When the drive shaft 13 rotates, it will carry the lubricating oil, which will gather and then separate at the intersection, thus playing a stirring role and facilitating the rapid transfer of heat from the heat-conducting sleeves 52 to the lubricating oil.

[0030] Please see Figures 1-4 The drive shaft 13 is hollow, and a heat-conducting block 53 is tightly packed on the inner wall of the drive shaft 13. The hollow drive shaft 13 uses the heat-conducting block 53 to transfer the heat inside the drive shaft 13, thereby increasing the heat conduction area and improving the heat dissipation effect.

[0031] Please see Figures 1-4 A heat pipe 54 is fixedly connected between the heat-conducting block 53 and the heat-conducting sleeve 52. Because the surface area of ​​the heat-conducting block 53 is small, heat is transferred to the external heat-conducting sleeve 52 through the heat pipe 54. The fins on the heat-conducting sleeve 52 are used for rapid heat dissipation. The heat pipe 54 is a nickel-based alloy heat pipe 54, which is filled with a high-temperature working fluid to transfer heat. Its principle is similar to the heat-conducting copper pipe on the graphics card heat exchanger 44.

[0032] Please see Figures 1-4 The drive shaft 13 has a through hole for the heat pipe 54 to pass through, and the diameter of the through hole is larger than that of the heat pipe 54. The through hole allows external lubricating oil to enter the interior of the drive shaft 13, helping to dissipate internal heat.

[0033] Please see Figures 1-4 The circulating cooling mechanism 40 includes an oil pump 41, which is mounted on the gearbox 12. The oil pump 41 has an oil suction pipe 42 and an oil spray pipe 43 at both ends. The oil suction pipe 42 is connected to the bottom of the gearbox 12, and the oil spray pipe 43 is connected to the heat insulation box 51. The oil pump 41 draws lubricating oil from the gearbox 12 and sprays it into the heat insulation box 51 through the oil spray pipe 43 to dissipate heat from the internal heat-conducting jacket 52 and drive shaft 13.

[0034] Please see Figures 1-4 The fuel injection pipe 43 is located between two heat-conducting sleeves 52, and nozzles are provided on both sides of the fuel injection pipe 43 facing the two heat-conducting sleeves 52. When injecting fuel, the fuel injection pipe 43 sprays directly towards the upper heat-conducting sleeve 52, which helps to transfer heat quickly.

[0035] Please see Figures 1-4 The circulating heat dissipation mechanism 40 also includes a heat exchanger 44, which is installed on the outer wall of the gearbox 12. A return pipe 45 is fixedly connected to the lower end of the insulation box 51. The return pipe 45 is connected to the inlet of the heat exchanger 44, and the outlet of the heat exchanger 44 is connected to the gearbox 12. The lubricating oil in the gearbox 12 flows into the insulation box 51 for cooling. Synthetic hydrocarbon lubricating oil or ester lubricating oil can be used. The lubricating oil in the gearbox 12 dissipates heat to the drive shaft 13 and the heat-conducting jacket 52 in the insulation box 51, and the temperature of the lubricating oil is rapidly increased. The high-temperature lubricating oil enters the heat exchanger 44 through the return pipe 45. Due to the large temperature difference, the heat dissipation is faster. The cooled lubricating oil flows back into the gearbox 12 for lubrication and heat dissipation. Thus, the insulation box 51 and the gearbox 12 share a single circulating heat dissipation mechanism 40, which simplifies the structure while satisfying the heat dissipation requirements.

[0036] The working principle of this continuous foaming aluminum-plastic composite board foaming device is as follows: The heat insulation box 51 is fixed outside the gearbox 12 and connected to the extrusion mechanism 30. The side wall of the heat insulation box 51 has a heat insulation layer. The temperature of the screw is transferred to the drive shaft 13. The oil pump 41 draws lubricating oil from inside the gearbox 12 and sprays it into the heat insulation box 51 through the oil spray pipe 43. The heat-conducting block 53 transfers the heat inside the drive shaft 13 to the heat-conducting sleeve 52 through the heat pipe 54. The heat-conducting sleeve 52 also directly receives the heat from the surface of the drive shaft 13. The lubricating oil dissipates heat from the heat-conducting sleeve 52, thereby rapidly reducing the temperature of the drive shaft 13 and significantly reducing the temperature of the drive shaft 13 entering the gearbox 12. This prevents localized overheating within the gearbox 12. The lubricating oil in the insulation box 51 then enters the heat exchanger 44 for heat dissipation. Due to the large temperature difference, heat conduction is faster, and the cooled lubricating oil flows back into the gearbox 12. Thus, the insulation box 51 and the gearbox 12 share a single circulating cooling mechanism 40, which simplifies the structure while satisfying heat dissipation requirements. In summary, the circulating cooling mechanism 40 circulates the lubricating oil in the gearbox 12 to the insulation mechanism 50 for direct cooling of the drive shaft 13, achieving efficient heat dissipation through the high temperature difference. The cooled lubricating oil then flows back into the gearbox 12, preventing localized overheating of the gearbox 12.

[0037] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, improvements, or equivalent substitutions made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A continuous foaming aluminum composite panel foaming device, characterized in that, The system includes a drive mechanism (10), a stirring mechanism (20), an extrusion mechanism (30), and a circulating heat dissipation mechanism (40). The drive mechanism (10) includes a motor (11) and a gearbox (12). The output end of the motor (11) is poweredly connected to the gearbox (12). A transmission shaft (13) is rotatably connected to the gearbox (12). The output end of the motor (11) is poweredly connected to the transmission shaft (13) through the gearbox (12). The transmission shaft (13) is connected to the extrusion mechanism (30). The screw is fixedly connected to the stirring mechanism (20) and the extrusion mechanism (30). A heat insulation mechanism (50) is provided on the drive shaft (13). The heat insulation mechanism (50) includes a heat insulation box (51) and a heat-conducting sleeve (52). The drive shaft (13) moves through the heat insulation box (51). The heat-conducting sleeve (52) is fixedly sleeved on the outer wall of the drive shaft (13). The circulating heat dissipation mechanism (40) circulates the lubricating oil in the gearbox (12) to the heat insulation box (51).

2. The continuous foaming aluminum-plastic composite board foaming device according to claim 1, characterized in that, The fins on the two heat-conducting sleeves (52) are interlocked.

3. The continuous foaming aluminum-plastic composite board foaming device according to claim 2, characterized in that, The drive shaft (13) is hollow, and a heat-conducting block (53) is tightly expanded on the inner wall of the drive shaft (13).

4. The continuous foaming aluminum-plastic composite board foaming device according to claim 3, characterized in that, A heat pipe (54) is fixedly connected between the heat-conducting block (53) and the heat-conducting sleeve (52).

5. The continuous foaming aluminum-plastic composite board foaming device according to claim 4, characterized in that, The drive shaft (13) has a through hole for the heat pipe (54) to pass through, and the diameter of the through hole is larger than that of the heat pipe (54).

6. The continuous foaming aluminum-plastic composite board foaming device according to claim 5, characterized in that, The circulating heat dissipation mechanism (40) includes an oil pump (41), which is mounted on the gearbox (12). The oil pump (41) has an oil suction pipe (42) and an oil spray pipe (43) at both ends. The oil suction pipe (42) is connected to the bottom of the gearbox (12), and the oil spray pipe (43) is connected to the heat insulation box (51).

7. The continuous foaming aluminum-plastic composite board foaming device according to claim 6, characterized in that, The oil injection pipe (43) is located between the two heat-conducting sleeves (52), and nozzles are provided on both sides of the oil injection pipe (43) facing the two heat-conducting sleeves (52).

8. The continuous foaming aluminum-plastic composite board foaming device according to claim 7, characterized in that, The circulating heat dissipation mechanism (40) also includes a heat exchanger (44), which is installed on the outer wall of the gearbox (12). The lower end of the heat insulation box (51) is fixedly connected to a return pipe (45), which is connected to the inlet of the heat exchanger (44) and the outlet of the heat exchanger (44) is connected to the gearbox (12).

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