3D printer

Abstract

The 3D printer comprises a heating box body, a working cavity is formed in the heating box body, a rotary table heat insulation cover is arranged in the working cavity, a heat insulation cavity is formed in the rotary table heat insulation cover, a rotary table driving assembly is arranged in the heat insulation cavity, a rotating platform is arranged on the rotary table heat insulation cover, and the rotating platform is in transmission connection with the rotary table driving assembly. A nozzle assembly is arranged at the top of the working cavity, the nozzle assembly is connected with the top of the heating box body through a three-axis movable seat, a parallel driving mechanism in transmission connection with the three-axis movable seat is arranged outside the heating box body, and a heating mechanism communicated with the working cavity is arranged on the heating box body; the rotary table driving assembly is used for driving the rotating platform to do three-axis motion; heat transfer is effectively isolated through the design of the rotary table heat insulation cover and the heat insulation cavity, a good protection effect on the rotary table driving assembly is achieved, the influence of high temperature is avoided, the three-axis movable seat and the parallel driving mechanism are both arranged outside the working cavity, the influence of a heat source is avoided, and therefore the service life of the equipment is effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a 3D printer. Background Art

[0002] During the 3D printing process, the filament is very likely to shrink and deform during the cooling stage. In order to ensure the quality of molding, it is particularly important to accurately control the temperature of the molding space. Five-axis printing equipment usually has a nozzle on the top of the chassis, and uses a nozzle drive device to drive the nozzle to perform three-axis movement. However, when the nozzle and the nozzle drive device operate in an environment where the chassis is heated as a whole, the high temperature environment may cause the performance of lubrication, sensing and other components in the nozzle drive device and other motion devices to deteriorate, thereby affecting the stability and printing quality of the entire device.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a 3D printer, which can separate the material heating area and the moving device area of ​​the 3D printer to prevent the moving device from being heated and reducing reliability.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A 3D printer comprises a heating box, wherein a working chamber is arranged in the heating box, a turntable heat insulation cover is arranged in the working chamber, a heat insulation chamber is arranged in the turntable heat insulation cover, a turntable drive assembly is arranged in the heat insulation chamber, a rotating platform is arranged on the turntable heat insulation cover, the rotating platform is transmission-connected to the turntable drive assembly, a nozzle assembly is arranged on the top of the working chamber, the nozzle assembly is connected to the top of the heating box through a three-axis movable seat, a parallel drive mechanism transmission-connected to the three-axis movable seat is arranged outside the heating box, and a heating mechanism connected to the working chamber is arranged on the heating box; the turntable drive assembly is used to drive the rotating platform to perform three-axis motion.

[0007] In the 3D printer, the three-axis movable seat includes a first movable platform and a second movable platform, the first movable platform is located in the working chamber, the second movable platform is located outside the heating box, the first movable platform and the second movable platform are connected by at least three ball-jointed slider mechanisms, the ball-jointed slider mechanism is arranged on the heating box, and the two ends of the ball-jointed slider mechanism are respectively connected to the first movable platform and the second movable platform by ball joints; the nozzle assembly includes a nozzle part and a wire extrusion part, the wire extrusion part is connected to the nozzle part, the nozzle part is arranged on the first movable platform, and the wire extrusion part and the parallel drive mechanism are respectively arranged on the second movable platform.

[0008] In the 3D printer, the ball joint slider mechanism includes a ball joint base and a slide rod, the ball joint base is arranged on the heating box, a rotation groove is arranged in the ball joint base, a rotatable ball rotor is arranged in the rotation groove, a through hole is arranged on the ball rotor, the slide rod is slidably connected to the through hole, and the two ends of the slide rod are respectively connected to the first movable platform and the second movable platform through a ball hinge assembly.

[0009] In the 3D printer, the turntable heat insulation cover includes an accordion box, the heat insulation cavity is located in the accordion box, a sealing plate assembly is provided on the top of the accordion box, the rotating platform is arranged on the sealing plate assembly, and the turntable drive assembly is respectively connected to the sealing plate assembly and the rotating platform in a transmission manner.

[0010] In the 3D printer, the heating box is provided with a cooling mechanism, and the cooling mechanism is provided with an air inlet end and an air outlet end, and the air inlet end and the air outlet end are respectively communicated with the heat insulation cavity.

[0011] In the 3D printer, the cooling mechanism includes a base, an air inlet assembly and an air outlet assembly, the base is arranged at the bottom of the insulation cavity, the air inlet assembly and the air outlet assembly are respectively arranged on the heating box, and air inlet slots and air outlet slots are respectively arranged on both sides of the base, the air inlet assembly is connected to the air inlet slot, and the air outlet assembly is connected to the air outlet slot.

[0012] In the 3D printer, the air inlet duct assembly includes an air inlet pipe; the air outlet assembly includes an air outlet pipe; a groove is provided at the bottom of the heating box, at least parts of the air inlet pipe and the air outlet pipe are located in the groove, one end of the air inlet pipe is connected to the air inlet groove, one end of the air outlet pipe is connected to the air outlet groove, and fan assemblies are respectively provided in the air inlet pipe and the air outlet pipe.

[0013] In the 3D printer, the turntable drive assembly includes a first rotating joint assembly, a vertical rotating groove is provided on the first rotating joint assembly, a second rotating joint assembly is provided in the vertical rotating groove and is transmission-connected to the first rotating joint assembly, an output end of the second rotating joint assembly extends toward the closing plate assembly, and is connected to the rotating platform after passing through the closing plate assembly; the first rotating joint assembly is used to drive the rotating platform to rotate in the vertical direction; the second rotating joint assembly is used to drive the rotating platform to rotate in the horizontal direction.

[0014] In the 3D printer, the sealing plate assembly includes a sealing plate, which is connected to the top opening of the accordion box through a first sealing frame, the rotating platform is arranged on the sealing plate, and the turntable driving assembly is respectively connected to the sealing plate and the rotating platform in a transmission manner, and the bottom opening of the accordion box is connected to the bottom of the working chamber through a second sealing frame.

[0015] In the 3D printer, a door hole communicating with the working chamber is provided on one side of the heating box, a door body is provided outside the door hole, and an observation window is provided on the door body; the door body is used to open or close the door hole.

[0016] Beneficial effects:

[0017] The present invention provides a 3D printer, wherein the heating box and the working chamber ensure the temperature control in the 3D printing process, which is essential for 3D printing technologies such as fused deposition modeling, and can ensure that the material maintains a suitable molten state in the printing process, thereby improving the printing quality. Secondly, the design of the turntable heat shield and the heat insulation chamber effectively isolates the transfer of heat, plays a good protective role on the turntable drive assembly, avoids the influence of high temperature, thereby extending the service life of the equipment and ensuring the stability of the printing process. In addition, the turntable heat shield also has the advantage of compressing the volume of the heating space, and by reducing the volume of the space 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 temperature for printing will be shortened, thereby reducing the waiting time in the printing process and improving the printing efficiency. The coordinated work of the turntable drive assembly and the rotating platform enables the printing platform to perform precise three-axis motion, which not only enhances the flexibility of printing, but also makes it possible to print a three-dimensional model with complex structure and high precision. The design of the three-axis movable seat enables the nozzle to move freely in three-dimensional space, further improving the flexibility and accuracy of printing. The three-axis movable seat and the parallel drive mechanism are both arranged outside the working chamber, avoiding the influence of heat sources, thereby effectively extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of the 3D printer provided by the present invention;

[0019] Figure 2 A schematic diagram of the internal structure of the 3D printer provided by the present invention;

[0020] Figure 3 Schematic diagram of the disassembled structure of the turntable heat shield in the 3D printer provided by the present invention Figure 1 ;

[0021] Figure 4Schematic diagram of the disassembled structure of the turntable heat shield in the 3D printer provided by the present invention Figure 2 ;

[0022] Figure 5 A schematic diagram of the assembly structure of the three-axis movable seat and the parallel drive mechanism in the 3D printer provided by the present invention;

[0023] Figure 6 This is a schematic diagram of the disassembled structure of the three-axis movable seat in the 3D printer provided by the present invention.

[0024] Main component symbol description: 1-heating box, 11-groove, 12-door body, 13-observation window, 2-turntable heat insulation cover, 21-heat insulation cavity, 22-bellows box, 23-sealing plate assembly, 231-sealing plate, 232-first sealing frame, 233-second sealing frame, 3-turntable driving assembly, 31-first rotating joint assembly, 32-vertical rotating groove, 33-second rotating joint assembly, 4-rotating platform, 5-nozzle assembly, 51-nozzle part, 52- Wire extrusion unit, 6-three-axis movable seat, 61-first movable platform, 62-second movable platform, 63-ball hinge slider mechanism, 631-ball hinge base, 632-slide rod, 633-rotation groove, 634-ball rotor, 635-ball hinge assembly, 7-parallel drive mechanism, 8-heating mechanism, 9-cooling mechanism, 91-base, 92-air inlet assembly, 921-air inlet pipe, 93-air outlet assembly, 931-air outlet pipe, 94-air inlet groove, 95-air outlet groove. DETAILED DESCRIPTION

[0025] The present invention provides a 3D printer. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "middle", "inner side", "outer side", etc. are directions or positional relationships of the present invention based on the drawings, which are only for the convenience of describing the present invention and simplifying the description. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0027] See also Figures 1 to 6The present invention provides a 3D printer, comprising a heating box 1, wherein a working chamber is arranged in the heating box 1, wherein a turntable heat insulation cover 2 is arranged in the working chamber, wherein a heat insulation chamber 21 is arranged in the turntable heat insulation cover 2, wherein a turntable driving assembly 3 is arranged in the heat insulation chamber 21, wherein a rotating platform 4 is arranged on the turntable heat insulation cover 2, wherein the rotating platform 4 is transmission-connected to the turntable driving assembly 3, wherein a nozzle assembly 5 is arranged on the top of the working chamber, wherein the nozzle assembly 5 is connected to the top of the heating box 1 through a three-axis movable seat 6, wherein a parallel driving mechanism 7 transmission-connected to the three-axis movable seat 6 is arranged outside the heating box 1, wherein a heating mechanism 8 communicating with the working chamber is arranged on the heating box 1; wherein the turntable driving assembly 3 is used for driving the rotating platform 4 to perform three-axis motion.

[0028] In actual use, the design of the heating box 1 and the working chamber ensures temperature control during the 3D printing process, which is crucial for 3D printing technologies such as fused deposition modeling, and can ensure that the material remains in a proper molten state during the printing process, thereby improving the printing quality. Secondly, the design of the turntable heat shield 2 and the heat insulation chamber 21 effectively isolates the heat, protects the turntable drive assembly 3 from high temperature, extends the service life of the equipment, and ensures the stability of the printing process. In addition, the turntable heat shield 2 also has the advantage of compressing the volume of the heating space. By reducing the volume of the space that needs to be heated, the energy consumption required for heating can be significantly saved. At the same time, a smaller heating space also means that the time for the cavity temperature to reach the required temperature for printing will be shortened, thereby reducing the waiting time during the printing process and improving the printing efficiency; the turntable drive assembly 3 cooperates with the rotating platform 4 to enable the printing platform to perform precise three-axis motion, which not only improves the flexibility of printing, but also can print a complex structure and high-precision three-dimensional model. The three-axis movable seat 6 allows the nozzle to move freely in three-dimensional space, further improving the flexibility and accuracy of printing. The parallel drive mechanism 7 can provide more stable and fast motion control for the three-axis movable seat 6, which is of great significance for improving printing speed and printing quality. The three-axis movable seat 6 and the parallel drive mechanism 7 are both located outside the working chamber and will not be affected by the heat source, which effectively extends the service life of the equipment. The heating mechanism 8 is connected to the working chamber to ensure uniform temperature distribution throughout the working chamber, which is particularly important for printing large or complex structure models.

[0029] It should be noted that the heating mechanism 8 can be a device with heating function such as a hot air blower, a heating wire assembly, etc.

[0030] It should be noted that the parallel driving mechanism 7 can be an existing parallel robot.

[0031] like Figures 1 to 6As shown, further, the three-axis movable seat 6 includes a first movable platform 61 and a second movable platform 62, the first movable platform 61 is located in the working chamber, the second movable platform 62 is located outside the heating box 1, the first movable platform 61 and the second movable platform 62 are connected by at least three ball-jointed slider mechanisms 63, the ball-jointed slider mechanisms 63 are arranged on the heating box 1, and the two ends of the ball-jointed slider mechanisms 63 are respectively ball-jointed with the first movable platform 61 and the second movable platform 62; the nozzle assembly 5 includes a nozzle part 51 and a wire extrusion part 52, the wire extrusion part 52 is connected to the nozzle part 51, the nozzle part 51 is arranged on the first movable platform 61, and the wire extrusion part 52 and the parallel drive mechanism are respectively arranged on the second movable platform 62; through the coordinated work of the first movable platform 61 and the second movable platform 62, a high-precision and flexible printing process is achieved. The first movable platform 61 is located in the working chamber, ensuring the stability and temperature control of the printing environment, while the second movable platform 62 is located outside the heating box 1, avoiding the influence of high temperature on the wire extrusion unit 52 and the parallel drive mechanism 7, and extending the service life of the equipment. The two platforms are connected by at least three ball-jointed slider mechanisms 63. This structure not only improves the smoothness of movement, but also enhances the stability and accuracy during the printing process. The first movable platform 61 and the second movable platform 62 are connected by ball joints using three ball-jointed slider mechanisms 63 to form a parallelogram structure, which can stably transmit the three-axis movement of the second movable platform 62 to the first movable platform 61.

[0032] In addition, the nozzle assembly 5 is arranged on the first movable platform 61, which can more accurately control the deposition of materials, and the parallel drive mechanism 7 is arranged on the second movable platform 62, which can provide more powerful power support and faster response. This design enables the 3D printer to maintain high speed and high precision when performing complex printing tasks, thereby greatly improving printing efficiency and finished product quality.

[0033] like Figures 1 to 6As shown, further, the ball-joint slider mechanism 63 includes a ball-joint base 631 and a slide bar 632, the ball-joint base 631 is arranged on the heating box 1, a rotation groove 633 is arranged in the ball-joint base 631, a rotatable ball rotor 634 is arranged in the rotation groove 633, a through hole is arranged on the ball rotor 634, the slide bar 632 is slidably connected with the through hole, and the two ends of the slide bar 632 are respectively connected with the first movable platform 61 and the second movable platform 62 through the ball-joint assembly 635. The ball-joint slider mechanism 63 enables the 3D printer to realize an accurate stacking printing process, ensuring that each layer of material can be accurately placed at a predetermined position. The combination of the ball-joint base 631 and the slide bar 632 enables the nozzle assembly 5 to move flexibly in the heating box 1, and the cooperation of the ball rotor 634 and the through hole ensures the smooth movement of the slide bar 632, thereby improving the stability and accuracy of printing. In addition, by connecting the sliding rod 632 to the first movable platform 61 and the second movable platform 62 through the ball hinge assembly 635, stable support and flexible adjustment of the movable platform can be achieved, so that the first movable platform 61 and the second movable platform 62 remain in a horizontal state when moving, further improving the controllability of the printing process and the quality of the printed product.

[0034] It should be noted that the sliding rod 632 is made of a material with low thermal conductivity, such as carbon fiber, ceramic, etc.

[0035] In one embodiment, a grease layer is provided on the rotating groove 633, the through hole and the ball hinge assembly 635; the grease layer not only plays a lubricating role, but also plays a role in sealing and heat-insulating the installation gap.

[0036] like Figures 1 to 6 As shown, further, the turntable heat shield 2 includes an accordion box 22, the heat insulation cavity 21 is located in the accordion box 22, a sealing plate assembly 23 is arranged on the top of the accordion box 22, the rotating platform 4 is arranged on the sealing plate assembly 23, and the turntable drive assembly 3 is respectively connected to the sealing plate assembly 23 and the rotating platform 4 by transmission; by adopting the accordion box 22 structure, the structural stability and reliability of the turntable heat shield 2 are significantly improved. This ensures the accuracy and stability of the rotating platform 4 during operation. By implementing an effective sealing design, external heat and dust are successfully isolated, thereby protecting the turntable drive device and extending its service life. In addition, the installation environment of the turntable drive assembly 3 is optimized, its operating efficiency and reliability are improved, and the performance of the entire equipment is enhanced. The accordion box 22 structure can adjust its shape accordingly according to the movement requirements when the rotating platform 4 performs dual-axis movement, ensuring that the sealing performance will not be damaged during the movement, and maintaining the overall sealing effect of the system. This design not only improves the thermal insulation performance of the equipment, but also ensures its reliability and stability during dynamic movement.

[0037] like Figures 1 to 6 As shown, further, a cooling mechanism 9 is provided on the heating box 1, and the cooling mechanism 9 is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected to the insulation cavity 21. This mechanism mainly relies on the coordinated operation of the air inlet and the air outlet to achieve effective management of the heat generated by the turntable drive assembly 3. The design of the air inlet allows the air in the external space to smoothly enter the insulation cavity 21. This process not only needs to consider the efficiency of air flow, but also ensure the cleanliness of the air to prevent dust and other particles from causing damage to the turntable drive assembly 3. The structural design inside the insulation cavity 21 is also crucial, which needs to ensure that the air can flow evenly through each part of the turntable drive assembly 3, so as to achieve a comprehensive cooling effect. After the heat is absorbed, the hot air is quickly discharged through the air outlet to ensure that the hot air can be discharged efficiently while reducing the impact on the surrounding environment. In this way, the accumulation of heat in the insulation cavity 21 is effectively controlled, thereby avoiding performance problems caused by overheating of the turntable drive assembly 3.

[0038] like Figures 1 to 6 As shown, further, the cooling mechanism 9 includes a base 91, an air inlet assembly 92 and an air outlet assembly 93, the base 91 is arranged at the bottom of the insulation cavity 21, the air inlet assembly 92 and the air outlet assembly 93 are respectively arranged on the heating box body 1, and the base 91 is respectively provided with an air inlet groove 94 and an air outlet groove 95 on both sides, the air inlet assembly 92 is connected to the air inlet groove 94, and the air outlet assembly 93 is connected to the air outlet groove 95; the air inlet assembly 92, the air inlet groove 94, the air outlet groove 95 and the air outlet assembly 93 form an air flow channel, and the air flow channel can be used to accelerate the circulation speed of air in the insulation cavity 21, thereby effectively improving the heat dissipation effect of the overall heat dissipation system, ensuring that the heat inside the turntable drive assembly 3 can be quickly taken away, thereby maintaining the turntable drive assembly 3 to operate at an optimal working temperature.

[0039] like Figures 1 to 6As shown, further, the air inlet pipe 921 assembly includes an air inlet pipe 921; the air outlet assembly 93 includes an air outlet pipe 931; a groove 11 is provided at the bottom of the heating box 1, at least part of the air inlet pipe 921 and the air outlet pipe 931 are located in the groove 11, one end of the air inlet pipe 921 is connected to the air inlet slot 94, one end of the air outlet pipe 931 is connected to the air outlet slot 95, and the air inlet pipe 921 and the air outlet pipe 931 are respectively provided with a fan assembly; by providing the groove 11, the air inlet pipe 921 and the air outlet pipe 931 can be installed reasonably, making the design of the entire 3D printer more compact; the fan assembly can accelerate the circulation speed of air in the pipeline, thereby effectively improving the heat dissipation effect of the overall heat dissipation system. Through the operation of the fan, air can be sucked in and discharged faster, ensuring that the heat inside the device can be quickly taken away, thereby maintaining the device running at the optimal working temperature.

[0040] like Figures 1 to 6 As shown, further, the turntable driving assembly 3 includes a first rotating joint assembly 31, a vertical rotating groove 32 is provided on the first rotating joint assembly 31, a second rotating joint assembly 33 is provided in the vertical rotating groove 32 and is connected to the first rotating joint assembly 31, and the output end of the second rotating joint assembly 33 extends in the direction of the sealing plate assembly 23, and is connected to the rotating platform 4 after passing through the sealing plate assembly 23; the first rotating joint assembly 31 is used to drive the rotating platform 4 to rotate in the vertical direction; the second rotating joint assembly 33 is used to drive the rotating platform 4 to rotate in the horizontal direction. The first rotating joint assembly 31 and the second rotating joint assembly 33 can realize the precise control of the rotating platform 4 in the vertical and horizontal directions to realize the three-axis motion of the rotating platform 4. The first rotating joint assembly 31 is responsible for vertical rotation, ensuring that the rotating platform 4 can rotate along the vertical axis to adapt to printing requirements at different angles. The second rotating joint assembly 33 is responsible for horizontal rotation, so that the rotating platform 4 can flexibly adjust the angle to adapt to various different operating positions. This double-joint design not only improves the flexibility and adaptability of the equipment, but also ensures that operators can work in the most convenient way in complex working environments, thereby improving overall work efficiency and operational accuracy.

[0041] like Figures 1 to 6As shown, further, the sealing plate assembly 23 includes a sealing plate 231, and the sealing plate 231 is connected to the top opening of the accordion box 22 through a first sealing frame 232, the rotating platform 4 is arranged on the sealing plate 231, and the turntable driving assembly 3 is respectively connected to the sealing plate 231 and the rotating platform 4 in transmission, and the bottom opening of the accordion box 22 is connected to the bottom of the working chamber through a second sealing frame 233; the first sealing frame 232 is used to ensure that the gap between the sealing plate 231 and the accordion box 22 is sealed, and the second sealing frame 233 is used to ensure that the gap between the accordion box 22 and the working chamber is sealed, thereby effectively improving the overall sealing effect of the accordion box 22 and preventing heat from entering the insulation chamber 21 from the installation gap.

[0042] like Figures 1 to 6 As shown, further, a door hole connected to the working chamber is provided on one side of the heating box 1, a door body 12 is provided outside the door hole, and an observation window 13 is provided on the door body 12; the door body 12 is used to open or close the door hole. The door hole is used to take and put objects, and the door body 12 ensures that the door hole can maintain good sealing performance when not in use, and can also effectively prevent outside air and pollutants from entering the interior of the heating box 1, thereby maintaining the stability of the internal environment of the heating box 1. In addition, the observation window 13 on the door body 12 enables the user to view the internal situation of the box without opening the door body 12, reducing unnecessary temperature fluctuations and energy consumption.

[0043] In summary, the heating box 1 and the working chamber ensure the temperature control in the 3D printing process, which is very important for 3D printing technologies such as fused deposition modeling, and can ensure that the material maintains a suitable molten state in the printing process, thereby improving the printing quality. Secondly, the design of the turntable heat shield 2 and the heat insulation chamber 21 effectively isolates the transfer of heat, plays a good protective role on the turntable drive assembly 3, avoids the influence of high temperature, thereby extending the service life of the equipment and ensuring the stability of the printing process. In addition, the turntable heat shield 2 also has the advantage of compressing the volume of the heating space. By reducing the volume of the 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 temperature for printing will be shortened, thereby reducing the waiting time in the printing process and improving the printing efficiency. The coordinated work of the turntable drive assembly 3 and the rotating platform 4 enables the printing platform to perform precise three-axis motion, which not only enhances the flexibility of printing, but also makes it possible to print a three-dimensional model with complex structure and high precision. The design of the three-axis movable seat 6 enables the nozzle to move freely in three-dimensional space, further improving the flexibility and accuracy of printing. The use of the parallel drive mechanism 7 provides a more stable and rapid motion control for the three-axis movable seat 6, which is of great significance for improving the printing speed and printing quality. The three-axis movable seat 6 and the parallel drive mechanism 7 are both arranged outside the working chamber to avoid the influence of heat sources, thereby effectively extending the service life of the equipment.

[0044] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A 3D printer, characterized in that: It includes a heating box, a working chamber is arranged in the heating box, a turntable heat insulation cover is arranged in the working chamber, a heat insulation chamber is arranged in the turntable heat insulation cover, a turntable drive assembly is arranged in the heat insulation chamber, a rotating platform is arranged on the turntable heat insulation cover, the rotating platform is transmission-connected to the turntable drive assembly, a nozzle assembly is arranged on the top of the working chamber, the nozzle assembly is connected to the top of the heating box through a three-axis movable seat, a parallel drive mechanism transmission-connected to the three-axis movable seat is arranged outside the heating box, and a heating mechanism connected to the working chamber is arranged on the heating box; the turntable drive assembly is used to drive the rotating platform to perform three-axis movement.

2. A 3D printer according to claim 1, characterized in that: The three-axis movable seat includes a first movable platform and a second movable platform, the first movable platform is located in the working chamber, and the second movable platform is located outside the heating box body, the first movable platform and the second movable platform are connected by at least three ball-jointed slider mechanisms, the ball-jointed slider mechanisms are arranged on the heating box body, and the two ends of the ball-jointed slider mechanisms are respectively ball-jointed with the first movable platform and the second movable platform; the nozzle assembly includes a nozzle part and a wire extrusion part, the wire extrusion part is connected to the nozzle part, the nozzle part is arranged on the first movable platform, and the wire extrusion part and the parallel drive mechanism are respectively arranged on the second movable platform.

3. A 3D printer according to claim 2, characterized in that: The ball joint slider mechanism includes a ball joint base and a sliding rod. The ball joint base is arranged on the heating box body. A rotating groove is arranged in the ball joint base. A rotatable ball rotor is arranged in the rotating groove. A through hole is arranged on the ball rotor. The sliding rod is slidably connected to the through hole. Both ends of the sliding rod are respectively connected to the first movable platform and the second movable platform through a ball joint assembly.

4. A 3D printer according to claim 1, characterized in that: The turntable heat insulation cover includes an accordion box, the heat insulation cavity is located in the accordion box, a sealing plate assembly is arranged on the top of the accordion box, the rotating platform is arranged on the sealing plate assembly, and the turntable driving assembly is respectively connected to the sealing plate assembly and the rotating platform.

5. A 3D printer according to claim 1, characterized in that: The heating box is provided with a cooling mechanism, and the cooling mechanism is provided with an air inlet end and an air outlet end, and the air inlet end and the air outlet end are respectively communicated with the heat insulation cavity.

6. A 3D printer according to claim 5, characterized in that: The cooling mechanism includes a base, an air inlet assembly and an air outlet assembly. The base is arranged at the bottom of the insulation cavity, and the air inlet assembly and the air outlet assembly are respectively arranged on the heating box body. An air inlet slot and an air outlet slot are respectively arranged on both sides of the base. The air inlet assembly is connected to the air inlet slot, and the air outlet assembly is connected to the air outlet slot.

7. A 3D printer according to claim 6, characterized in that: The air inlet duct assembly includes an air inlet pipe; the air outlet assembly includes an air outlet pipe; a groove is provided at the bottom of the heating box body, at least parts of the air inlet pipe and the air outlet pipe are located in the groove, one end of the air inlet pipe is connected to the air inlet groove, one end of the air outlet pipe is connected to the air outlet groove, and fan assemblies are respectively provided in the air inlet pipe and the air outlet pipe.

8. A 3D printer according to claim 4, characterized in that: The turntable driving assembly includes a first rotating joint assembly, the first rotating joint assembly is provided with a vertical rotating groove, a second rotating joint assembly is provided in the vertical rotating groove and is transmission-connected to the first rotating joint assembly, an output end of the second rotating joint assembly extends toward the closing plate assembly, passes through the closing plate assembly and is connected to the rotating platform; The first rotating joint assembly is used to drive the rotating platform to rotate in the vertical direction; the second rotating joint assembly is used to drive the rotating platform to rotate in the horizontal direction.

9. A 3D printer according to claim 4, characterized in that: The sealing plate assembly includes a sealing plate, which is connected to the top opening of the accordion box through a first sealing frame, the rotating platform is arranged on the sealing plate, and the turntable driving assembly is respectively connected to the sealing plate and the rotating platform in transmission, and the bottom opening of the accordion box is connected to the bottom of the working chamber through a second sealing frame.

10. A 3D printer according to claim 1, characterized in that: A door hole communicating with the working chamber is arranged on one side of the heating box body, a door body is arranged outside the door hole, and an observation window is arranged on the door body; the door body is used to open or close the door hole.

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