A heat preservation and cooling device and a 3D printer

Abstract

The application relates to the technical field of 3D printers, in particular to a heat preservation and cooling device and a 3D printer, which comprises a base, a box, a hot air blower, a rotary table heat shield, a nozzle heat shield and a heat dissipation device, the box is arranged on the base, the nozzle heat shield and the rotary table heat shield are both arranged in the box, the nozzle heat shield is fixedly connected with the top of the box, the rotary table heat shield is fixedly connected with the bottom of the box, the hot air blower is arranged on the side of the box, and the heat dissipation device is arranged below the box. The rotary table heat shield and the nozzle heat shield adapt to the sealing requirement under complex motion, guarantee the stability and reliability of the motion system, isolate the motion system from the hot area, compress the heating space, reduce the heating waiting time, also reduce the negative influence of heat on the system, and improve the equipment performance and service life.

Description

Technical Field

[0001] This invention relates to the field of 3D printer technology, and in particular to a heat preservation and cooling device and a 3D printer. Background Technology

[0002] During 3D printing, the filament is prone to shrinkage and deformation during the cooling phase. Therefore, precise temperature control of the molding space is crucial to ensure molding quality. Traditional planar 3D printing typically employs comprehensive insulation of the machine's internal cavity to maintain temperature stability. Compared to planar 3D printing, curved surface 3D printing introduces two additional degrees of freedom for platform rotation, resulting in a significantly wider range of motion for five-axis printing equipment.

[0003] Five-axis printers typically have a nozzle assembly at the top of the chassis, including a nozzle drive and a nozzle body. The nozzle drive propels the nozzle body in three-axis motion. A turntable assembly at the bottom of the chassis includes a turntable drive and a turntable body, which rotates the turntable body along the X and Z axes. Because the motion and control systems of five-axis printers are more complex than traditional 3D printers, they require more installation space, resulting in a larger space needed for insulation. This leads to a longer waiting time for the entire chassis to heat up, impacting production efficiency. Furthermore, operating in a heated environment can cause performance degradation in lubrication and sensing components within the motion mechanism, affecting the overall stability of the equipment and print quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide at least one beneficial option or creation condition to solve one or more technical problems existing in the prior art.

[0005] The solution to the technical problem of this invention is as follows: It includes a base, a housing, a hot air blower, a turntable heat shield, a nozzle heat shield, and a heat dissipation device. The housing is mounted on the base, and the housing has an installation space inside. The nozzle heat shield and the turntable heat shield are both disposed within the installation space, thereby dividing the installation space into a first installation space for mounting the turntable assembly, a second installation space for heating and printing, and a third installation space for mounting the nozzle assembly. The output end of the hot air blower is connected to the second installation space, and the hot air blower is used to heat the second installation space. The heat dissipation device is connected to the first installation space, and the heat dissipation device is used to dissipate heat from the first installation space.

[0006] The beneficial effects of this invention are: the turntable heat shield and nozzle heat shield can adapt to the sealing requirements of the turntable and nozzle under complex motion conditions, ensuring the stability and reliability of the motion system. By dividing the installation space of the housing into three independent spaces, the motion system is isolated from the hot zone, which can significantly reduce the impact of heat on the motion system, thereby improving the overall performance and service life of the equipment. In addition, it has the advantage of compressing the heating space volume. By reducing the volume of space that needs to be heated, the energy consumption required for heating can be significantly saved. At the same time, the smaller heating space also means that the time for the cavity temperature to reach the required printing temperature is shortened, thereby reducing the waiting time during the printing process and improving printing efficiency.

[0007] As a further improvement to the above technical solution, the heat preservation and cooling device also includes a door panel. The front of the box body is provided with a first opening. The door panel is used to open or close the first opening. The door panel is provided with an observation window.

[0008] As a further improvement to the above technical solution, the third opening is used for taking out and putting in items. The door panel ensures that the third opening can maintain good sealing performance when not in use, and can also effectively prevent outside air and pollutants from entering the cabinet, thereby maintaining the stability of the cabinet's internal environment. In addition, the observation window on the door panel allows users to check the inside of the cabinet without opening the door panel, reducing unnecessary temperature fluctuations and energy consumption.

[0009] As a further improvement to the above technical solution, the turntable heat insulation cover includes a first bellows cover and a first sealing plate. The first sealing plate is used to install the turntable body in the turntable assembly. The first bellows cover is arranged vertically. One end of the first bellows cover is fixedly connected to the first sealing plate, and the other end of the first bellows cover is fixedly connected to the inner bottom surface of the housing. The first bellows cover forms a first channel. The first sealing plate, the first channel, and the bottom plate of the housing form a first installation space. The bottom of the housing is provided with a second opening communicating with the first installation space, so that the turntable drive device in the turntable assembly can be installed in the first installation space. The first sealing plate is provided with a turntable mounting hole, which communicates with the first installation space and the second installation space, so that the turntable drive device in the first installation space can be connected to the turntable body installed in the second installation space.

[0010] As a further improvement to the above technical solution, the overall stability and reliability of the turntable heat shield are improved, ensuring the accuracy and stability of the turntable during operation. Through effective sealing design, external heat and dust are isolated, protecting the turntable drive unit, extending its service life, optimizing the installation environment of the turntable drive unit, and improving its operating efficiency and reliability, thereby enhancing the overall performance of the equipment. The first bellows cover can change its shape according to the needs of the movement when the turntable is in two-axis motion, ensuring that the bellows cover will not have a negative impact on the sealing performance during the movement, thus maintaining the overall sealing effect of the system. This not only improves the heat insulation performance of the equipment, but also ensures its reliability and stability in dynamic movement.

[0011] As a further improvement to the above technical solution, the turntable heat insulation cover also includes a first sealing ring and a second sealing ring. The first sealing ring is disposed between the first bellows cover and the first sealing plate, and the second sealing ring is disposed between the first bellows cover and the housing. The first sealing ring and the second sealing ring are used to prevent hot air in the second installation space from penetrating into the first installation space through the installation gap.

[0012] As a further improvement to the above technical solution, the first sealing ring ensures a seal between the first bellows cover and the first sealing plate, effectively preventing heat transfer through this gap. The second sealing ring ensures a seal between the first bellows cover and the housing, further enhancing the overall sealing performance of the turntable heat insulation cover. This double sealing improves the sealing performance and heat insulation effect of the turntable heat insulation cover.

[0013] As a further improvement to the above technical solution, the turntable heat insulation cover includes a first bellows cover and a first sealing plate. The first sealing plate is used to install the turntable body in the turntable assembly. The first bellows cover is arranged vertically. One end of the first bellows cover is fixedly connected to the first sealing plate, and the other end of the first bellows cover is fixedly connected to the inner bottom surface of the housing. The first bellows cover forms a first channel. The first sealing plate, the first channel, and the bottom plate of the housing form a first installation space. The bottom of the housing is provided with a second opening communicating with the first installation space, so that the turntable drive device in the turntable assembly can be installed in the first installation space. The first sealing plate is provided with a turntable mounting hole, which communicates with the first installation space and the second installation space, so that the turntable drive device in the first installation space can be connected to the turntable body installed in the second installation space.

[0014] As a further improvement to the above technical solution, the second sealing plate ensures the tightness and sealing of the connection between the conical bellows cover and the nozzle. The second bellows cover avoids the influence of hot air on the extrusion mechanism above the nozzle, thereby improving the stability of the extrusion process and the quality of the product. The nozzle can work more stably in high-temperature environments, reducing malfunctions and defective products caused by hot air interference, thereby improving the efficiency and reliability of the entire production line.

[0015] As a further improvement to the above technical solution, the second accordion cover is conical in shape, and the width of the second accordion cover gradually increases from the bottom to the top of the second accordion cover.

[0016] As a further improvement to the aforementioned technical solution, the second bellows cover plays a major role in heat insulation. When the nozzle undergoes triaxial motion, the conical compressible structure can change accordingly without negatively impacting the sealing performance. This design not only improves the equipment's heat insulation effect but also ensures good sealing performance during dynamic movement, thereby enhancing the overall stability and reliability of the equipment.

[0017] As a further improvement to the above technical solution, the nozzle heat insulation cover also includes a third sealing ring and a fourth sealing ring. The third sealing ring is disposed between the second bellows cover and the second sealing plate, and the fourth sealing ring is disposed between the second bellows cover and the housing. The third sealing ring and the fourth sealing ring are used to prevent hot air in the second installation space from penetrating into the third installation space through the installation gap.

[0018] As a further improvement to the above technical solution, the third sealing ring ensures the seal between the second bellows cover and the second sealing plate, effectively preventing heat from spreading through this path. The fourth sealing ring ensures the seal between the second bellows cover and the housing, further strengthening the sealing effect between the second bellows cover and the housing, making the thermal efficiency of the entire system higher, thereby improving the operating efficiency and safety of the equipment.

[0019] As a further improvement to the above technical solution, the heat dissipation device includes an air inlet pipe and an air outlet pipe. The bottom surface of the housing is provided with an air inlet and an air outlet. One end of the air inlet pipe is connected to the external space, and the other end of the air inlet pipe is connected to the first installation space through the air inlet. One end of the air outlet pipe is connected to the first installation space through the air outlet, and the other end of the air outlet pipe is connected to the external space.

[0020] As a further improvement to the above technical solution, the coordinated operation of the air inlet and outlet pipes allows air from the outside space to enter the first installation space through the air inlet pipe, carrying away the heat generated during equipment operation. Simultaneously, the hot air is rapidly exhausted through the air outlet pipe, preventing heat accumulation inside the equipment and effectively preventing overheating.

[0021] A 3D printer includes a heat preservation and cooling device as described in any of the preceding claims, a nozzle assembly and a turntable assembly, the nozzle assembly including a nozzle drive and a nozzle body, and the turntable assembly including a turntable drive and a turntable body.

[0022] The beneficial effects of this invention are: by compressing the heating space, the time required to wait for the cavity temperature to reach the ideal state during the printing process is reduced, thereby improving the overall printing efficiency and ensuring the stability of printing quality; the cooling device ensures the smooth progress of the entire printing process and reduces equipment downtime caused by excessively high or unstable temperatures; the heat preservation and cooling device not only optimizes the printing process but also significantly improves production efficiency and product quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0025] Figure 3 This is a schematic diagram of the heat insulation cover for the turntable;

[0026] Figure 4 This is a schematic diagram of the heat dissipation device;

[0027] Figure 5 This is a schematic diagram of the nozzle heat shield structure.

[0028] In the attached diagram: 1-base, 2-box, 201-first installation space, 202-second installation space, 203-third installation space, 3-hot air blower, 4-turntable heat insulation cover, 401-first bellows cover, 402-first sealing plate, 403-first sealing ring, 404-second sealing ring, 5-nozzle heat insulation cover, 501-second bellows cover, 502-second sealing plate, 503-third sealing ring, 504-fourth sealing ring, 6-heat dissipation device, 602-air inlet pipe, 603-air outlet pipe, 604-coil, fan 605, 7-door panel, 701-observation window. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments have been briefly explained above. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0030] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages mentioned herein do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in the present invention can be combined interactively without contradicting each other.

[0031] During 3D printing, the filament is prone to shrinkage and deformation during the cooling phase. Therefore, precise temperature control of the molding space is crucial to ensure molding quality. Traditional planar 3D printing typically employs comprehensive insulation of the machine's internal cavity to maintain temperature stability. Compared to planar 3D printing, curved surface 3D printing introduces two additional degrees of freedom for platform rotation, resulting in a significantly wider range of motion for five-axis printing equipment.

[0032] Five-axis printers typically have a nozzle assembly at the top of the chassis, including a nozzle drive and a nozzle body. The nozzle drive propels the nozzle body in three-axis motion. A turntable assembly at the bottom of the chassis includes a turntable drive and a turntable body, which rotates the turntable body along the X and Z axes. Because the motion and control systems of five-axis printers are more complex than traditional 3D printers, they require more installation space, resulting in a larger space needed for insulation. This leads to a longer waiting time for the entire chassis to heat up, impacting production efficiency. Furthermore, operating in a heated environment can cause performance degradation in lubrication and sensing components within the motion mechanism, affecting the overall stability of the equipment and print quality.

[0033] Therefore, a heat preservation and cooling device, referring to Figures 1-5It includes a base 1, a housing 2, a hot air blower 3, a turntable heat insulation cover 4, a nozzle heat insulation cover 5, and a heat dissipation device 6. The housing 2 is mounted on the base 1 and has an installation space inside. The nozzle heat insulation cover 5 and the turntable heat insulation cover 4 are both located within the installation space, dividing the installation space to form a first installation space 201 for mounting the turntable assembly, a second installation space 202 for heating and printing, and a third installation space 203 for mounting the nozzle assembly. The output end of the hot air blower 3 is connected to the second installation space 202, and the hot air blower 3 is used to heat the second installation space 202. The heat dissipation device 6 is connected to the first installation space 201 and is used to dissipate heat from the first installation space 201.

[0034] The turntable heat shield 4 and nozzle heat shield 5 can meet the sealing requirements of the turntable and nozzle under complex motion conditions, ensuring the stability and reliability of the motion system. By dividing the installation space of the housing 2 into three independent spaces, the motion system is isolated from the hot zone, which can significantly reduce the impact of heat on the motion system, thereby improving the overall performance and service life of the equipment. In addition, it has the advantage of reducing the volume of the heating space. By reducing the volume of space that needs to be heated, the energy consumption required for heating can be significantly saved. At the same time, the smaller heating space also means that the time for the cavity temperature to reach the required printing temperature is shortened, thereby reducing the waiting time during the printing process and improving printing efficiency.

[0035] In use, place base 1 in a suitable position. The function of base 1 is to adjust and ensure the horizontal setting of the printing platform to guarantee print quality. Install housing 2 on base 1. The nozzle assembly is located above housing 2. The nozzle assembly enters the third mounting space 203 through the third opening on the top of housing 2. The nozzle body in the nozzle assembly is installed inside the second mounting space 202 and is fixedly connected to the second sealing plate 502. The nozzle drive device in the nozzle assembly is connected to the nozzle body through the nozzle mounting hole. The second bellows cover 501 is firmly connected to the inner top surface of housing 2. The second sealing plate 502 and the second bellows cover 501 work together to effectively separate the internal space of housing 2, thereby isolating the heating area from the nozzle drive device. The turntable assembly is installed below housing 2. The turntable assembly is connected to the bottom of housing 2. The second opening of the part enters the interior of the first installation space 201. The turntable body of the turntable assembly is installed inside the second installation space 202. The turntable body is fixedly connected to the first sealing plate 402. The turntable drive device in the turntable assembly is connected to the turntable body through the turntable mounting hole. The first bellows cover 401 is firmly connected to the inner bottom surface of the housing 2. The first sealing plate 402 and the first bellows cover 401 work together to effectively separate the interior space of the housing 2, thereby isolating the heating area from the turntable drive device. The hot air blower 3 is installed on one side of the housing 2. The output end of the hot air blower 3 is connected to the second installation space 202. The hot air blower 3 is used to heat the second installation space 202. The heat dissipation device 6 is connected to the first installation space 201. The heat dissipation device 6 is used to dissipate heat from the first installation space 201.

[0036] During 3D printing, temperature stability directly affects the melting and solidification process of the printing material, thus determining the quality and precision of the final printed part. Therefore, in one embodiment, the insulation and cooling device also includes a door panel 7. The front of the housing 2 has a third opening, and the door panel 7 is used to open or close this third opening. The door panel 7 has an observation window 701. The third opening is used for placing and removing items. The door panel 7 ensures that the third opening maintains good sealing performance when not in use, effectively preventing outside air and contaminants from entering the housing 2, thereby maintaining a stable internal environment. Furthermore, the observation window 701 on the door panel 7 allows the user to view the interior of the housing 2 without opening the door panel 7, reducing unnecessary temperature fluctuations and energy consumption.

[0037] Printing operations must be performed on a specific installation platform to ensure that the device can correctly recognize and execute the printing task. Therefore, in one embodiment, the turntable heat insulation cover 4 includes a first bellows cover 401 and a first sealing plate 402. The first sealing plate 402 is used to install the turntable body in the turntable assembly. The first bellows cover 401 is arranged vertically. One end of the first bellows cover 401 is fixedly connected to the first sealing plate 402, and the other end of the first bellows cover 401 is fixedly connected to the inner bottom surface of the housing 2. The first bellows cover 401 forms a first channel. The first sealing plate 402, the first channel, and the bottom plate of the housing 2 form a first installation space 201. The bottom of the housing 2 is provided with a second opening communicating with the first installation space 201 so that the turntable drive device in the turntable assembly can be installed in the first installation space 201. The first sealing plate 402 is provided with a turntable mounting hole communicating with the first installation space 201 and the second installation space 202 so that the turntable drive device in the first installation space 201 can be connected to the turntable body installed in the second installation space 202. The overall stability and reliability of the turntable heat shield 4 are improved, ensuring the accuracy and stability of the turntable during operation. Through effective sealing design, external heat and dust are isolated, protecting the turntable drive unit, extending its service life, optimizing the installation environment of the turntable drive unit, and improving its operating efficiency and reliability, thereby enhancing the performance of the entire equipment. The first bellows cover 401 can change its shape according to the needs of the movement when the turntable is in two-axis motion, ensuring that the bellows cover will not have a negative impact on the sealing performance during the movement, thus maintaining the overall sealing effect of the system. This not only improves the heat insulation performance of the equipment, but also ensures its reliability and stability in dynamic movement.

[0038] Heat leakage may occur at the connection points. Therefore, in one embodiment, the turntable heat insulation cover 4 further includes a first sealing ring 403 and a second sealing ring 404. The first sealing ring 403 is disposed between the first bellows cover 401 and the first sealing plate 402, and the second sealing ring 404 is disposed between the first bellows cover 401 and the housing 2. The first sealing ring 403 and the second sealing ring 404 are used to prevent hot air in the second mounting space 202 from penetrating into the first mounting space 201 through the installation gap. The first sealing ring 403 ensures the seal between the first bellows cover 401 and the first sealing plate 402, effectively preventing heat transfer through this gap. The second sealing ring 404 ensures the seal between the first bellows cover 401 and the housing 2, further enhancing the overall sealing performance of the turntable heat insulation cover 4. The double sealing improves the sealing performance and heat insulation effect of the turntable heat insulation cover 4.

[0039] To avoid the impact of heat on nozzle performance, the nozzle should be kept away from heat sources to prevent high-temperature environments from adversely affecting nozzle materials and spraying effects. Therefore, in one embodiment, the turntable heat insulation cover 4 includes a first bellows cover 401 and a first sealing plate 402. The first sealing plate 402 is used to install the turntable body in the turntable assembly. The first bellows cover 401 is arranged vertically. One end of the first bellows cover 401 is fixedly connected to the first sealing plate 402, and the other end of the first bellows cover 401 is fixedly connected to the inner bottom surface of the housing 2. The first bellows cover 401 forms a first channel. The first sealing plate 402, the first channel, and the bottom plate of the housing 2 form a first installation space 201. The bottom of the housing 2 is provided with a second opening communicating with the first installation space 201 so that the turntable drive device in the turntable assembly can be installed in the first installation space 201. The first sealing plate 402 is provided with a turntable mounting hole communicating with the first installation space 201 and the second installation space 202 so that the turntable drive device in the first installation space 201 can be connected to the turntable body installed in the second installation space 202. The second sealing plate 502 ensures the tightness and sealing of the connection between the conical bellows cover and the nozzle. The second bellows cover 501 avoids the influence of hot air on the extrusion mechanism above the nozzle, thereby improving the stability of the extrusion process and the quality of the product. The nozzle can work more stably in high-temperature environments, reducing malfunctions and defective products caused by hot air interference, thereby improving the efficiency and reliability of the entire production line.

[0040] When the nozzle is in operation, it needs to perform a series of complex triaxial movements to achieve the printing of complex geometric structures. Therefore, in one embodiment, the second bellows cover 501 is conical, and the width of the second bellows cover 501 gradually increases from the bottom to the top. The second bellows cover 501 plays a major role in heat insulation. When the nozzle performs triaxial movements, the conical compressible structure can change accordingly without negatively affecting the sealing performance. This design not only improves the heat insulation effect of the equipment but also ensures good sealing performance during dynamic movement, thereby improving the overall stability and reliability of the equipment.

[0041] Heat leakage can negatively impact the normal operation of equipment. High temperatures may cause premature aging or even damage to internal electronic components and mechanical parts, thereby reducing the reliability and stability of the equipment. Therefore, in one embodiment, the nozzle heat shield 5 further includes a third sealing ring 503 and a fourth sealing ring 504. The third sealing ring 503 is disposed between the second bellows cover 501 and the second sealing plate 502, and the fourth sealing ring 504 is disposed between the second bellows cover 501 and the housing 2. The third and fourth sealing rings 503 and 504 prevent hot air in the second mounting space 202 from penetrating into the third mounting space 203 through the installation gaps. The third sealing ring 503 ensures a seal between the second bellows cover 501 and the second sealing plate 502, effectively preventing heat from spreading through this path. The fourth sealing ring 504 ensures a seal between the second bellows cover 501 and the housing 2, further strengthening the sealing effect between the second bellows cover 501 and the housing 2, resulting in higher thermal efficiency of the entire system, thereby improving the operating efficiency and safety of the equipment.

[0042] Poor sealing and heat generated by heat conduction from the turntable can negatively impact the operation of the turntable drive device. Therefore, in one embodiment, the heat dissipation device 6 includes an air inlet duct 602 and an air outlet 603. The bottom surface of the housing 2 is provided with an air inlet and an air outlet. One end of the air inlet duct 602 is connected to the external space, and the other end of the air inlet duct 602 is connected to the first installation space 201 through the air inlet. One end of the air outlet duct 603 is connected to the first installation space 201 through the air outlet, and the other end of the air outlet duct 603 is connected to the external space. Through the coordinated operation of the air inlet duct 602 and the air outlet duct 603, air from the external space can enter the first installation space 201 through the air inlet duct 602, carrying away the heat generated during equipment operation. Simultaneously, hot air is quickly discharged through the air outlet duct 603, preventing heat accumulation inside the equipment and effectively preventing overheating.

[0043] Preferably, a fan 605 is installed inside the air inlet duct 602 and the air outlet duct 603. The fan can accelerate the airflow speed in the duct, thereby effectively improving the heat dissipation effect of the overall heat dissipation system. Through the operation of the fan, air can be drawn in and discharged more quickly, ensuring that the heat inside the equipment can be quickly removed, thereby maintaining the equipment operating at the optimal operating temperature.

[0044] Preferably, the heat dissipation device 6 includes a water inlet pipe (equivalent to the air inlet pipe 602 mentioned above), a water outlet pipe (equivalent to the air outlet pipe 602 mentioned above), and a coil 604. The coil 604 is arranged on one side of the turntable drive device. One end of the coil is connected to the water inlet pipe, and the other end of the coil is connected to the water outlet pipe. Cold water enters the first installation space 201 from the water inlet pipe and then flows into the coil. The coil carries away the heat from the surface of the turntable drive device, and hot water is discharged through the water outlet pipe.

[0045] A 3D printer includes a heat preservation and cooling device as described in any of the preceding claims, a nozzle assembly and a turntable assembly, the nozzle assembly including a nozzle drive and a nozzle body, and the turntable assembly including a turntable drive and a turntable body.

[0046] By compressing the heating space, the time required to wait for the cavity temperature to reach the ideal state during the printing process is reduced, which improves the overall printing efficiency and ensures the stability of print quality. The cooling device ensures the smooth operation of the entire printing process and reduces equipment downtime caused by excessively high or unstable temperatures. The heat preservation and cooling device not only optimizes the printing process but also significantly improves production efficiency and product quality.

[0047] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A heat preservation and cooling device, characterized in that, The device includes a base (1), a housing (2), a hot air blower (3), a turntable heat shield (4), a nozzle heat shield (5), and a heat dissipation device (6). The housing (2) is mounted on the base (1). The housing (2) has an installation space inside. The nozzle heat shield (5) and the turntable heat shield (4) are both mounted in the installation space, so that the installation space is divided to form a first installation space (201) for mounting the turntable assembly, a second installation space (202) for heating and printing, and a third installation space (203) for mounting the nozzle assembly. The output end of the hot air blower (3) is connected to the second installation space (202). The hot air blower (3) is used to heat the second installation space (202). The heat dissipation device (6) is connected to the first installation space (201). The heat dissipation device (6) is used to dissipate heat from the first installation space (201). The turntable heat insulation cover (4) includes a first bellows cover (401) and a first sealing plate (402). The first sealing plate (402) is used to install the turntable body in the turntable assembly. The first bellows cover (401) is arranged vertically. One end of the first bellows cover (401) is fixedly connected to the first sealing plate (402), and the other end of the first bellows cover (401) is fixedly connected to the inner bottom surface of the housing (2). The first bellows cover (401) forms a first channel. The first sealing plate (402), the first channel, and the housing ( 2) The bottom plate surrounds the first installation space (201). The bottom of the box (2) is provided with a second opening that connects to the first installation space (201) so that the turntable drive device in the turntable assembly can be installed in the first installation space (201). The first sealing plate (402) is provided with a turntable mounting hole that connects the first installation space (201) and the second installation space (202) so that the turntable drive device in the first installation space (201) can be connected to the turntable body installed in the second installation space (202). The nozzle heat shield (5) includes a second bellows cover (501) and a second sealing plate (502). The second sealing plate (502) is used to install the nozzle body in the nozzle assembly. The second bellows cover (501) is arranged vertically. One end of the second bellows cover (501) is fixedly connected to the second sealing plate (502), and the other end of the second bellows cover (501) is fixedly connected to the top surface of the housing (2). The second bellows cover (501) forms a second channel. The second sealing plate (502), the second channel, and the housing (2) The top plate of the box (2) forms the third installation space (203). The top of the box (2) is provided with a third opening that communicates with the third installation space (203) so that the nozzle drive device in the nozzle assembly can be installed in the third installation space (203). The second sealing plate (502) is provided with a nozzle mounting hole that communicates with the second installation space (202) and the third installation space (203) so that the nozzle drive device in the third installation space (203) can be connected to the nozzle body installed in the second installation space (202). The second accordion cover (501) is conical in shape, and the width of the second accordion cover (501) gradually increases from the bottom of the second accordion cover (501) to the top of the second accordion cover (501); The heat dissipation device (6) includes an air inlet pipe (602) and an air outlet pipe (603). The bottom surface of the housing (2) is provided with an air inlet and an air outlet. One end of the air inlet pipe (602) is connected to the external space, and the other end of the air inlet pipe (602) is connected to the first installation space (201) through the air inlet. One end of the air outlet pipe (603) is connected to the first installation space (201) through the air outlet, and the other end of the air outlet pipe (603) is connected to the external space.

2. The heat preservation and cooling device according to claim 1, characterized in that, It also includes a door panel (7), the front of the box body (2) is provided with a first opening, the door panel (7) is used to open or close the first opening, and the door panel (7) is provided with an observation window (701).

3. The heat preservation and cooling device according to claim 1, characterized in that, The turntable heat insulation cover (4) also includes a first sealing ring (403) and a second sealing ring (404). The first sealing ring (403) is disposed between the first bellows cover (401) and the first sealing plate (402), and the second sealing ring (404) is disposed between the first bellows cover (401) and the housing (2). The first sealing ring (403) and the second sealing ring (404) are used to prevent hot air in the second installation space (202) from penetrating into the first installation space (201) through the installation gap.

4. The heat preservation and cooling device according to claim 1, characterized in that, The nozzle heat shield (5) also includes a third sealing ring (503) and a fourth sealing ring (504). The third sealing ring (503) is disposed between the second bellows cover (501) and the second sealing plate (502), and the fourth sealing ring (504) is disposed between the second bellows cover (501) and the housing (2). The third sealing ring (503) and the fourth sealing ring (504) are used to prevent hot air in the second installation space (202) from penetrating into the third installation space (203) through the installation gap.

5. A 3D printer, characterized in that, The device includes the heat preservation and cooling device as described in any one of claims 1-4, as well as a nozzle assembly and a turntable assembly, wherein the nozzle assembly includes a nozzle drive device and a nozzle body, and the turntable assembly includes a turntable drive device and a turntable body.

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