A 3D printing consumable regenerating device with high heat preservation

Abstract

The utility model discloses a kind of 3D printing consumables regenerative device of high-efficiency heat preservation, it is related to 3D printing consumables technical field, to solve the technical problem of the heat preservation effect of existing 3D printing consumables regenerative device is not good, energy utilization is low, including supporting device and heat preservation device.The utility model is by design multilayer composite heat preservation device structure, from inside to outside in turn adopt heating wire, second mica tape, outer square inner circle aluminium block, cylinder inner shell, high-temperature resistant heat insulation cotton, aerogel composite heat preservation material, ceramic fiber, first mica tape and eight square prism shell gradient heat preservation layer design, reduce the heat loss in heating process, reduce energy consumption, while ensuring the stability and uniformity of heating area temperature, avoid the problem of melting unevenness caused by temperature fluctuation, to ensure the quality stability of output regenerative wire material, solve the heat preservation effect of existing 3D printing consumables regenerative device is not good, and energy utilization is low problem.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing consumables technology, and more specifically, to a highly efficient heat-insulating 3D printing consumables regeneration device. Background Technology

[0002] 3D printing is an advanced manufacturing technology that creates three-dimensional objects by layering materials. It is widely used in industrial manufacturing, medical devices, architectural models, education, and scientific research. With the rapid development and widespread application of 3D printing technology, the amount of waste materials generated during the process is increasing daily. If these waste materials are not recycled, they not only cause serious resource waste but also have a negative impact on the environment. The recycling capacity of waste materials directly reflects the sustainable development level of the 3D printing industry and is a key indicator for measuring resource recycling efficiency. Therefore, developing efficient 3D printing material recycling devices to achieve waste recycling is of great significance for reducing production costs, improving resource utilization efficiency, and promoting sustainable development.

[0003] Currently, in the recycling and regeneration of waste 3D printing filaments, the melting stage often employs simple heating methods to treat the waste material. In this heating mode, the insulation structure of the heating device is relatively simple, typically using only a single insulation material or a simple double-layer insulation structure. The heat transfer path between the heating element and the insulation layer is poorly designed, failing to effectively prevent heat loss through the insulation layer. As the heating time increases, a large amount of heat is lost to the external environment through gaps and weak points in the insulation material, making it difficult to maintain a stable melting temperature range in the heating area, resulting in low heating efficiency and significant energy consumption. Furthermore, poor insulation also causes uneven temperature distribution within the heating area; some waste material degrades due to excessively high temperatures, while some fails to melt completely due to insufficient temperatures, affecting the uniformity of the recycled filament quality. This, in turn, affects the consistency of wire diameter, mechanical properties, and printing accuracy of the recycled filaments in actual 3D printing applications, restricting the market promotion and application value of recycled filaments. Therefore, we propose a highly efficient and heat-insulating 3D printing filament recycling device. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a high-efficiency heat-insulating 3D printing consumable recycling device to solve the technical problems of poor heat insulation effect and low energy utilization rate of the current 3D printing consumable recycling device.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a high-efficiency heat-insulating 3D printing consumable recycling device, including a support device and a heat-insulating device. The support device includes an aluminum frame and a T-shaped fixing frame fixed on the aluminum frame. The heat-insulating device includes an octagonal prism shell and a heat-insulating component and a feeding component disposed inside the octagonal prism shell. The feeding component includes a feeding pipe and a spiral drill bit. The spiral drill bit has a spiral drill bit structure. The upper end of the feeding pipe is connected to the recycling hopper, and the lower end is provided with a discharge port. A heating wire is disposed on the outside of the feeding pipe. The heat-insulating component includes an outer square inner circle aluminum block and a cylindrical inner shell. The outer square inner circle aluminum block is disposed outside the feeding pipe. The outer square inner circle aluminum block has an outer square inner circle structure. Its outer surface is a square structure, and its interior is a circular cavity structure. The inner diameter of the circular cavity structure matches the outer diameter of the feeding pipe. The cylindrical inner shell is disposed inside the outer square inner circle aluminum block. The cavity between the outer square inner circle aluminum block and the cylindrical inner shell is filled with high-temperature resistant heat-insulating cotton.

[0006] Preferably, the insulation component further includes a second mica tape, which covers the heating wire. Aerogel composite insulation material and ceramic fiber are sequentially arranged on the outer side of the inner shell of the cylinder, and the ceramic fiber is covered with the first mica tape, forming a multi-layer composite insulation structure.

[0007] Preferably, the octagonal prism shell is a split structure, consisting of a detachable left half shell and a right half shell, which facilitates the maintenance and replacement of the internal components of the insulation device.

[0008] Preferably, a stepper motor is provided on the outside of the heat preservation device. The stepper motor is connected to the upper end of the support drill through a transmission mechanism. The stepper motor drives the support drill to rotate, and the support drill conveys the 3D printing waste downward to the heating area.

[0009] Preferably, it also includes a feeding device, a wire recycling device, an air-cooling device, and an operation panel.

[0010] Preferably, the feeding device includes an extruder and a discharge hopper. The feed hopper of the extruder is connected to a feed pipe that is fixedly installed at the discharge port located at the lower end of the feeding pipe. The extruder is equipped with a stepper motor for controlling the extrusion force.

[0011] Preferably, the wire recycling device is arranged below the feeding device. The wire recycling device includes a material tray, a winding roller, and a material shaft. The winding roller is arranged between the feeding device and the material tray. The material tray is rotatably installed via the material shaft. The material shaft is fixedly installed to the output end of the stepper motor. The discharge hopper is located on top of the winding roller, forming a continuous wire conveying path.

[0012] Preferably, the air-cooling device includes a first fan and a second fan. The first fan is arranged between the heat preservation device and the feeding device for the first cooling of the molten material, and the second fan is arranged below the feeding device for the second cooling of the forming wire.

[0013] Preferably, the operation panel is electrically connected to the stepper motor of the support drill, the heating wire, the stepper motor of the feeding device, the air-cooling device, and the stepper motor of the wire recycling device, so as to realize centralized control and automated operation of the entire device.

[0014] Preferably, the T-shaped fixing frame has a reinforcing rib structure, with its vertical part bolted to the aluminum frame platform and its horizontal part fixed to the octagonal prism shell by buckles or bolts to form a vibration-resistant support. The bottom of the aluminum frame platform is provided with anti-slip pads to improve the stability of the device during operation.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model designs a multi-layer composite insulation device structure, employing a gradient insulation layer design from the inside out, consisting of heating wire, a second mica tape, an outer square and inner round aluminum block, a cylindrical inner shell, high-temperature resistant insulation cotton, aerogel composite insulation material, ceramic fiber, a first mica tape, and an octagonal prism outer shell. The spiral winding of the heating wire achieves uniform heating, the insulation properties of the second mica tape ensure safe operation, and the ultra-low thermal conductivity of the aerogel composite insulation material and the high-temperature resistance of the ceramic fiber form a highly efficient heat insulation barrier. Through the synergistic effect of multiple insulation materials, a gradient insulation effect with progressively decreasing temperature from the inside out is achieved, effectively preventing heat loss. This design significantly improves insulation efficiency, reduces heat loss during heating, lowers energy consumption, and ensures the stability and uniformity of the temperature in the heating area, allowing 3D printing waste to fully and completely melt, avoiding uneven melting caused by temperature fluctuations. This ensures the quality stability of the output recycled filament and solves the problems of poor insulation and low energy utilization in existing 3D printing consumable recycling devices.

[0016] 2. This utility model also incorporates an outer square and inner round aluminum block design. The outer surface of the outer square and inner round aluminum block has a square structure, which facilitates its fit and fixation against the inner wall of the cylindrical shell. The interior of the outer square and inner round aluminum block has a circular cavity structure to accommodate the feeding pipe and the support screw. This design utilizes the high thermal conductivity of aluminum material, allowing the heat generated by the heating wire to be evenly transferred to the inside of the feeding pipe and the support screw, ensuring uniform heating of the waste material. At the same time, the circular cavity structure precisely matches the outer diameter of the feeding pipe and the support screw, achieving stable fixation of the feeding pipe and the support screw, avoiding displacement or loosening caused by thermal expansion and contraction during long-term high-temperature operation, and ensuring the stability and reliability of the device. This design, while improving the heat preservation effect, also ensures the uniformity and fullness of waste melting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a schematic diagram of the external structure of the heat preservation device of this utility model; Figure 3 This is a cross-sectional structural diagram of the heat preservation device of this utility model; Figure 4 This is a schematic diagram of the feeding pipe and its supporting screw drill of this utility model.

[0018] The following are the labels in the diagram: 1. Recycling hopper; 2. Insulation device; 201. Feeding pipe; 2011. Screwdriver; 2012. Heating wire; 204. Outer square and inner round aluminum block; 205. High-temperature resistant insulation cotton; 206. Inner cylindrical shell; 207. Aerogel composite insulation material; 208. Ceramic fiber; 209. First mica tape; 210. Octagonal prism shell; 211. Second mica tape; 3. Feeding device; 301. Extruder; 3011. Feeding pipe; 302. Discharge hopper; 4. Wire recycling device; 401. Material tray; 402. Winding roller; 403. Material shaft; 5. Air-cooled cooling device; 501. First fan; 502. Second fan; 6. Control panel; 7. Support device; 701. Aluminum frame; 702. T-shaped fixing frame. Detailed Implementation

[0019] Example: Figures 1 to 4As shown, this utility model relates to a high-efficiency heat-insulating 3D printing consumable regeneration device, including a support device 7 and a heat-insulating device 2, as well as a feeding device 3, a filament recycling device 4, an air-cooling device 5, and an operation panel 6. The support device 7 includes an aluminum frame 701 and a T-shaped fixing frame 702 fixed on the aluminum frame 701. The T-shaped fixing frame 702 has a reinforcing rib structure, and its vertical part is bolted to the aluminum frame 701, while its horizontal part is fixed to the octagonal prism shell 210 by buckles or bolts to form a vibration-resistant support. The bottom of the aluminum frame 701 is provided with anti-slip pads to improve the stability of the device during operation. The heat-insulating device 2 includes the octagonal prism shell 210 and a device installed on the octagonal prism shell 210. The internal insulation and feeding components, the octagonal prism shell 210 is a split structure, consisting of a detachable left half shell and a right half shell, which facilitates the maintenance and replacement of the internal components of the insulation device 2. The feeding component includes a feeding pipe 201 and a spiral drill 2011. The spiral drill 2011 has a spiral drill bit structure. The upper end of the feeding pipe 201 is connected to the recovery hopper 1, and the lower end has a discharge port. A heating wire 2012 is provided on the outside of the feeding pipe 201. The insulation component includes an outer square inner circle aluminum block 204 and a cylindrical inner shell 206. The outer square inner circle aluminum block 204 is located outside the feeding pipe 201. The outer square inner circle aluminum block 204 has an outer square inner circle structure, its outer surface is a square structure, and its interior is a circular cavity structure. The inner diameter of the cylindrical inner shell 206 matches the outer diameter of the feeding pipe 201. The inner cylindrical shell 206 is set inside the outer square inner round aluminum block 204. The cavity between the outer square inner round aluminum block 204 and the inner cylindrical shell 206 is filled with high-temperature resistant insulation cotton 205. This utility model designs a multi-layer composite insulation device structure, which adopts a gradient insulation layer design from the inside out, consisting of heating wire 2012, second mica tape 211, outer square inner round aluminum block 204, inner cylindrical shell 206, high-temperature resistant insulation cotton 205, aerogel composite insulation material 207, ceramic fiber 208, first mica tape 209 and octagonal prism shell 210. Uniform heating is achieved by the spiral winding of the heating wire 2012, and the insulation properties of the second mica tape 211 are utilized. To ensure safe operation, the ultra-low thermal conductivity of aerogel composite insulation material 207 and the high-temperature resistance of ceramic fiber 208 are used to form a highly efficient thermal insulation barrier. Through the synergistic effect of multiple insulation materials, a gradient insulation effect with decreasing temperature from the inside to the outside is formed, effectively preventing heat loss. This design significantly improves insulation efficiency, reduces heat loss during the heating process, and lowers energy consumption. At the same time, it ensures the stability and uniformity of the temperature in the heating area, allowing 3D printing waste to be fully and completely melted, avoiding uneven melting caused by temperature fluctuations. This ensures the quality stability of the output recycled filament and solves the problems of poor insulation and low energy utilization in existing 3D printing consumable recycling devices.

[0020] Furthermore, the insulation component also includes a second mica tape 211, which covers the outside of the heating wire 2012. Aerogel composite insulation material 207 and ceramic fiber 208 are sequentially arranged on the outside of the cylindrical inner shell 206. The ceramic fiber 208 is covered with a first mica tape 209, forming a multi-layer composite insulation structure. The double insulation design of the second mica tape 211 and the first mica tape 209 effectively isolates the heating wire 2012 from the metal parts, eliminating the risk of leakage. The split structure of the octagonal prism outer shell 210 not only facilitates maintenance but also reduces the surface temperature of the outer shell, avoiding the risk of burns during operation and improving the safety and reliability of the equipment.

[0021] Furthermore, a stepper motor is installed on the outside of the heat preservation device 2. The stepper motor is connected to the upper end of the support drill 2011 through a transmission mechanism. The stepper motor drives the support drill 2011 to rotate, and the support drill 2011 conveys the 3D printing waste material downward to the heating area.

[0022] Furthermore, the feeding device 3 includes an extruder 301 and a discharge hopper 302. The feed hopper of the extruder 301 is connected to the feed pipe 3011, which is fixedly installed at the discharge port located at the lower end of the feed pipe 201. The extruder 301 is equipped with a stepper motor for controlling the extrusion force.

[0023] Furthermore, the wire recycling device 4 is arranged below the feeding device 3. The wire recycling device 4 includes a material tray 401, a winding roller 402, and a material shaft 403. The winding roller 402 is arranged between the feeding device 3 and the material tray 401. The material tray 401 is rotatably mounted via the material shaft 403. The material shaft 403 is fixedly mounted to the output end of the stepper motor. The discharge hopper 302 is set on top of the winding roller 402, forming a continuous wire conveying path. The material tray 401 is driven by the stepper motor via the material shaft 403. After being guided by the winding roller 402, the shaped recycled wire can be neatly and tightly wound into the material tray 401.

[0024] Furthermore, the air-cooled cooling device 5 includes a first fan 501 and a second fan 502. The first fan 501 is arranged between the heat preservation device 2 and the feeding device 3 to cool the molten material for the first time. The second fan 502 is arranged below the feeding device 3 to cool the formed wire for the second time. The first fan 501 is located between the heat preservation device 2 and the feeding device 3, and can cool the high-temperature molten recycled material that has just been extruded from the feeding pipe 201 for the first time, so that its temperature drops to a suitable range for entering the extruder 301, and avoids high temperature damage to the components of the extruder 301. The second fan 502 is located below the feeding device 3, and cools the semi-solid wire after extrusion for the second time, so that it can be quickly solidified and shaped.

[0025] Furthermore, the operation panel 6 is electrically connected to the stepper motor of the support drill 2011, the heating wire 2012, the stepper motor of the feeding device 3, the air-cooled cooling device 5, and the stepper motor of the wire recycling device 4, so as to realize centralized control and automated operation of the entire device.

[0026] Working Principle: This embodiment provides a high-efficiency heat-insulating 3D printing consumable recycling device. During use, the operator first needs to connect an external power supply to the device and control its operation via the control panel 6. The operator puts the 3D printing waste into the recycling hopper 1, where the waste enters the feeding pipe 201 inside the heat-insulating device 2 by gravity. The heating wire 2012 is activated via the control panel 6, initiating heating. The heat from the heating wire 2012 is transferred to the outer square inner round aluminum block 204 through the second mica strip 211. The outer square inner round aluminum block 204 utilizes its high thermal conductivity to evenly transfer heat to the feeding pipe 201. Under the action of the multi-layer composite heat-insulating structure, heat loss in the heating area is minimized, and the waste is fully melted in a stable high-temperature environment. The stepper motor drives the support drill 2011 to rotate, and the spiral structure of the support drill 2011 pushes the waste downwards, ensuring it is fully heated in the heating area. The molten recycled material flows from the feeding pipe 201 and the support drill 2011. The material is extruded from the outlet. At this time, the first fan 501 starts working to rapidly cool the extruded high-temperature molten recycled material for the first time, reducing its temperature to a suitable level. The cooled recycled material enters the extruder 301 through the feed pipe 3011. The stepper motor inside the extruder 301 controls the extrusion pressure, allowing the recycled material to pass through an outlet of a specific size, ensuring that the diameter of the recycled yarn meets the requirements. The extruded recycled yarn undergoes a second cooling process by the second fan 502, further reducing its temperature and finally solidifying into shape. The formed recycled yarn is guided by the winding roller 402 and, under the coordinated control of the stepper motors of the winding roller 402 and the material tray 401, is neatly and orderly wound into the material tray 401, completing the collection of recycled yarn. When the material tray 401 is full of recycled yarn, the operator can stop the device operation through the operation panel 6 and remove the recycled yarn from the material tray 401. The operation panel 6 monitors the temperature and operating status of each component in real time throughout the entire process, ensuring stable and efficient operation of the device.

[0027] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A high-efficiency heat-insulating 3D printing consumable regeneration device, characterized in that, include, Support device (7), the support device (7) includes an aluminum frame (701) and a T-shaped fixing frame (702) fixed on the aluminum frame (701); The heat preservation device (2) includes an octagonal prism shell (210) and a heat preservation component and a feeding component disposed inside the octagonal prism shell (210); The feeding assembly includes a feeding pipe (201) and a spiral drill (2011). The spiral drill (2011) has a spiral drill bit structure. The upper end of the feeding pipe (201) is connected to the recovery hopper (1), and the lower end is provided with a discharge port. A heating wire (2012) is provided on the outside of the feeding pipe (201). The insulation component includes an outer square inner circle aluminum block (204) and a cylindrical inner shell (206). The outer square inner circle aluminum block (204) is disposed outside the feeding pipe (201). The outer square inner circle aluminum block (204) has an outer square inner circle structure. Its outer surface is a square structure and its interior is a circular cavity structure. The inner diameter of the circular cavity structure matches the outer diameter of the feeding pipe (201). The cylindrical inner shell (206) is disposed inside the outer square inner circle aluminum block (204). The cavity between the outer square inner circle aluminum block (204) and the cylindrical inner shell (206) is filled with high-temperature resistant insulation cotton (205).

2. The high-efficiency heat-insulating 3D printing consumable regeneration device according to claim 1, characterized in that, The insulation component also includes a second mica tape (211), which covers the outside of the heating wire (2012). Aerogel composite insulation material (207) and ceramic fiber (208) are sequentially arranged on the outside of the inner shell (206). The ceramic fiber (208) is covered with a first mica tape (209) to form a multi-layer composite insulation structure.

3. The high-efficiency heat-insulating 3D printing consumable regeneration device according to claim 2, characterized in that, The octagonal prism shell (210) is a split structure, consisting of a detachable left half shell and a right half shell, which facilitates the maintenance and replacement of the internal components of the insulation device (2).

4. The high-efficiency heat-insulating 3D printing consumable regeneration device according to claim 1, characterized in that, The heat preservation device (2) is equipped with a stepper motor on its exterior. The stepper motor is connected to the upper end of the support drill (2011) through a transmission mechanism. The stepper motor drives the support drill (2011) to rotate, and the support drill (2011) conveys the 3D printing waste material downward to the heating area.

5. The high-efficiency heat-insulating 3D printing consumable regeneration device according to claim 1, characterized in that, It also includes a feeding device (3), a wire recycling device (4), an air-cooled cooling device (5), and an operation panel (6).

6. The high-efficiency heat-insulating 3D printing consumable regeneration device according to claim 5, characterized in that, The feeding device (3) includes an extruder (301) and a discharge hopper (302). The feed hopper of the extruder (301) is connected to the feed pipe (3011) which is fixedly installed at the discharge port located at the lower end of the feeding pipe (201). The extruder (301) is equipped with a stepper motor for controlling the extrusion force.

7. The high-efficiency heat-insulating 3D printing consumable regeneration device according to claim 6, characterized in that, The wire recycling device (4) is arranged below the feeding device (3). The wire recycling device (4) includes a material tray (401), a winding roller (402) and a material shaft (403). The winding roller (402) is arranged between the feeding device (3) and the material tray (401). The material tray (401) is rotatably mounted through the material shaft (403). The material shaft (403) is fixedly mounted to the output end of the stepper motor. The discharge hopper (302) is set on top of the winding roller (402) to form a continuous wire conveying path.

8. The high-efficiency heat-insulating 3D printing consumable regeneration device according to claim 6, characterized in that, The air-cooled cooling device (5) includes a first fan (501) and a second fan (502). The first fan (501) is arranged between the heat preservation device (2) and the feeding device (3) for the first cooling of the molten material. The second fan (502) is arranged below the feeding device (3) for the second cooling of the formed wire.

9. A high-efficiency heat-insulating 3D printing consumable regeneration device according to claim 8, characterized in that, The operation panel (6) is electrically connected to the stepper motor of the support drill (2011), the heating wire (2012), the stepper motor of the feeding device (3), the air-cooled cooling device (5), and the stepper motor of the wire recycling device (4), so as to realize centralized control and automated operation of the entire device.

10. The high-efficiency heat-insulating 3D printing consumable regeneration device according to claim 1, characterized in that, The T-shaped fixing frame (702) has a reinforcing rib structure. Its vertical part is bolted to the aluminum frame (701), and its horizontal part is fixed to the octagonal prism shell (210) by buckles or bolts to form a vibration-resistant support. The bottom of the aluminum frame (701) is provided with anti-slip pads to improve the stability of the device during operation.

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