A high temperature 3D printer of printable PEEK material

Abstract

The utility model belongs to 3D printing technical field discloses a kind of high-temperature 3D printers of printable PEEK material, including mobile spray head assembly, box body assembly, lift printing platform, control system, frame, the mobile spray head assembly is installed at the top of box body assembly, the mobile spray head assembly includes printing spray head, wire-feeding mechanism and X axis, Y axis horizontal direction moving part, the outside of printing spray head is provided with water-cooling heat dissipation pipe cover, the wire-feeding mechanism is installed above printing spray head, and the printing spray head is installed on the printing spray head support of X axis, Y axis horizontal direction moving part.The utility model designs the heat preservation cavity of airtight, heating element and air supply element are configured in heat preservation cavity, can manufacture circulating heat flow in cavity, ensure that the heat distribution of printing piece near in cavity is uniform, temperature is reasonable controllable, alleviate temperature gradient phenomenon when printing piece cooling, so that printing piece obtains better forming precision and mechanical property.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing technology, and in particular relates to a high-temperature 3D printer capable of printing PEEK materials. Background Technology

[0002] Fused deposition modeling (FDM) 3D printing technology involves melting resin filaments and stacking, depositing, and cooling them onto a substrate along a specific path to form a defined structure. It is currently the most common 3D printing technology, offering advantages such as simple structure, low cost, and ease of operation. This technology allows for the rapid printing and manufacturing of complex structural parts, enabling rapid iteration and upgrades of product prototypes, shortening development cycles, and significantly reducing material waste. It has wide applications in various fields including manufacturing, aerospace, electronics, medical and biological products, construction, and cultural entertainment.

[0003] Currently, common FDM equipment can primarily print materials with low melting points, such as PLA and ABS. However, for high-melting-point, high-performance specialty materials like polyetheretherketone (PEEK), issues arise: low printhead temperature leads to poor material melt flow; the printed parts have low crystallinity and poor mechanical properties; increasing the printhead temperature can cause filament blockage, preventing proper extrusion; fused deposition modeling (FDM) is a layered manufacturing process, with relatively fragile connections between layers, easily resulting in noticeable layer cracks; most common FDM equipment has an open structure, making it impossible to insulate the printed parts during printing; some chassis have simple outer shells, but their insulation capabilities are poor. When printing high-melting-point materials, the large temperature difference between printing and room temperature causes rapid material shrinkage, leading to warping and deformation of the printed parts, affecting their accuracy and mechanical properties. Utility Model Content

[0004] The technical problem this invention aims to solve is that when printing high-melting-point materials, the large temperature difference between the printing temperature and room temperature causes rapid shrinkage of the material, leading to warping and deformation of the molded parts, which affects the accuracy and mechanical properties of the printed parts.

[0005] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:

[0006] A high-temperature 3D printer capable of printing PEEK material includes a moving nozzle assembly, a housing assembly, a lifting printing platform, a control system, and a frame. The moving nozzle assembly is mounted on the top of the housing assembly and includes a printing nozzle, a filament feeding mechanism, and horizontal moving components along the X and Y axes. A water-cooled heat dissipation sleeve is provided on the outside of the printing nozzle. The filament feeding mechanism is mounted above the printing nozzle. The printing nozzle is mounted on a printing nozzle bracket of the horizontal moving components along the X and Y axes, and the printing nozzle bracket is driven by a stepper motor.

[0007] The box assembly is installed on the upper part of the frame. The box assembly has a loading door on the front side. The box assembly has an insulated box inside. The upper port of the insulated box has an insulation ring. The insulated box has a heating and blowing device inside.

[0008] The lifting printing platform is installed inside the frame. The lifting printing platform includes a Z-axis lifting motor installed at the bottom of the printer and a printing platform above it. The Z-axis lifting motor drives the printing platform to lift and lower via a lead screw. A heating plate is provided at the bottom of the printing platform.

[0009] Furthermore, the heating and blowing device includes a pair of curved heating tubes disposed on the left and right sides of the heat preservation box.

[0010] Furthermore, the heating tube is equipped with a fan, which is placed in the groove of the heating tube. An exhaust fan is installed on the rear side of the insulation box. An internal air duct is provided inside the insulation box. The fan and the exhaust fan are distributed on the internal air duct. An air outlet is provided in the internal air duct directly opposite the fan.

[0011] Furthermore, a telescopic accordion cover is installed on the top of the insulated box, which can move with the print head.

[0012] Furthermore, a linear guide rail is fixedly installed on the inner side of the frame, and the printing platform is slidably installed in the linear guide rail.

[0013] Furthermore, a storage bin for preheating filamentous materials is provided at the right end of the housing assembly.

[0014] Furthermore, a water-cooling heat dissipation device is also provided at the bottom of the frame, and the lifting printing platform, control system, water-cooling heat dissipation system and feeding hopper are all installed outside the insulated box.

[0015] This utility model has the following advantages:

[0016] 1. This utility model is designed with a sealed heat-insulating cavity, which is equipped with heating elements and air supply elements. It can generate circulating heat flow in the cavity, ensuring uniform heat distribution near the printed parts and reasonable and controllable temperature. This reduces the temperature gradient phenomenon when the printed parts are cooled, and enables the printed parts to obtain better forming accuracy and mechanical properties.

[0017] 2. This utility model adopts water cooling with better heat dissipation effect. The water cooling pipeline and water cooling radiator covering the feeding throat tube can dissipate heat, which can avoid the blockage and uneven material output caused by the printing material melting in advance. Attached Figure Description

[0018] Figure 1 A schematic diagram of a high-temperature 3D printer capable of printing PEEK material;

[0019] Figure 2 This is a three-dimensional structural diagram of the moving nozzle assembly in a high-temperature 3D printer that can print PEEK material.

[0020] Figure 3 A top view of a moving nozzle assembly in a high-temperature 3D printer capable of printing PEEK material;

[0021] Figure 4 This is a schematic diagram of the housing assembly in a high-temperature 3D printer that can print PEEK material.

[0022] Figure 5 This is a schematic diagram of the insulation box in a high-temperature 3D printer that can print PEEK material.

[0023] Figure 6 This is a schematic diagram of the internal structure of the insulation box in a high-temperature 3D printer that can print PEEK material.

[0024] Figure 7 This is a schematic diagram of the lifting printing platform in a high-temperature 3D printer that can print PEEK material.

[0025] In the diagram: 1. Moving printhead assembly; 2. Housing assembly; 3. Lifting printing platform; 4. Frame; 5. Stepper motor; 6. Telescopic bellows cover; 7. Printhead bracket; 8. Silk feed mechanism; 9. Water cooling system; 10. Printhead; 11. Fan motor; 12. Air outlet; 13. Internal air duct; 14. Exhaust fan; 15. Insulated housing; 16. Insulation ring; 17. Heating element; 18. Fan; 19. Fan wheel motor; 20. Printing platform; 21. Heating plate; 22. Linear guide rail; 23. Lead screw; 24. Z-axis lifting motor; 25. Storage bin; 26. Retrieval door. Detailed Implementation

[0026] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0027] Example 1:

[0028] Please see Figures 1-7 A high-temperature 3D printer capable of printing PEEK material includes a moving nozzle assembly 1, a housing assembly 2, a lifting printing platform 3, a control system, and a frame 4. The moving nozzle assembly 1 is mounted on the top of the housing assembly 2. The moving nozzle assembly 1 includes a printing nozzle 10, a filament feeding mechanism 8, and horizontal moving parts in the X and Y axes. A water-cooled heat dissipation sleeve 9 is provided above the printing nozzle 10. The filament feeding mechanism 8 is provided above the water-cooled heat dissipation sleeve 9. The filament feeding mechanism 8 and the water-cooled heat dissipation sleeve 9 are mounted on the printing nozzle support 7 of the horizontal moving parts in the X and Y axes. The printing nozzle support 7 is driven by a stepper motor 5.

[0029] The box assembly 2 is installed on the upper part of the frame 4. The box assembly 2 has a loading door 26 on the front side. The box assembly 2 has an insulated box 15 inside. The insulated box 15 is surrounded by an insulation ring 16. The insulated box 15 has a heating and blowing device inside.

[0030] The lifting printing platform 3 is installed inside the frame 4. The lifting printing platform 3 includes a Z-axis lifting motor 24 installed at the bottom of the printer and a printing platform 20 above it. The Z-axis lifting motor 24 drives the printing platform 20 to lift and lower via a lead screw 23. A heating plate 21 is provided at the bottom of the printing platform 20.

[0031] The heating device includes a pair of curved heating tubes 17 arranged on the left and right sides of the heat preservation box 15.

[0032] The heating tube 17 is equipped with a fan 18, which is placed in the groove of the heating tube 17. An exhaust fan 14 is installed on the rear side of the insulation box 15. An internal air duct 13 is provided inside the insulation box 15. The fan 18 and the exhaust fan 14 are distributed on the internal air duct 13. An air outlet 12 is provided in the internal air duct 13 directly opposite the fan 18.

[0033] The top of the insulated box 15 is equipped with a telescopic bellows cover 6, which can move with the print head 10.

[0034] A linear guide rail 22 is fixedly installed on the inner side of the frame 4, and the printing platform 20 is slidably installed in the linear guide rail 22.

[0035] Working principle of this embodiment:

[0036] The filament feeding mechanism 8 feeds the printing filament from the material bin to the print head 10, where it is heated by a heating block. The filament melts and is extruded from the print head, adhering to the printing platform 20. The print head 10 is driven by a stepper motor 5 in the moving print head assembly 1, allowing movement along predetermined paths in the X and Y axes. A water-cooled heat dissipation sleeve 9 cools the feed throat above the print head 10 using a water-cooling system. The heating tube 17 heats the air, and the fan motor 11 drives the fan 18 to blow the heated air from the heating tube 17 into the insulation chamber 15 through the air outlet 12. The fan wheel motor 19 drives the exhaust fan 14 to draw the hot air from inside the insulation chamber 15 into the internal air duct 13. The air circulates through the internal air duct 13 before exiting through the air outlet 12, forming a circulating heat flow within the printing chamber (insulation chamber 15). This maintains a certain temperature on the working surface, ensuring good printing results. The Z-axis lifting motor drives the printing platform 20 to move vertically along the Z-axis. After the print head 10 completes printing one layer on the printing platform, the printing platform 20 descends by the thickness of one printing layer to continue printing the next layer. Through the continuous deposition of each printing layer, the designed printed structure is completed. The heating plate 21 is used to provide a certain temperature so that the first few printing layers can adhere well to the printing platform 20.

[0037] Example 2:

[0038] Please see Figure 4 A high-temperature 3D printer capable of printing PEEK material, differing from Embodiment 1 in that the right end of the housing assembly 2 is provided with a storage bin 25 for preheating the filament material.

[0039] In this embodiment, the storage bin 25 preheats the stored filamentous material, which can achieve better printing results.

[0040] Example 3:

[0041] Please see Figures 1-7 A high-temperature 3D printer capable of printing PEEK material differs from Embodiment 1 in that the bottom of the frame 4 is also equipped with a water-cooling heat dissipation device, and the lifting printing platform 3, control system, water-cooling heat dissipation system and feeding bin are all installed outside the insulated box 15.

[0042] In this embodiment, the lifting printing platform 3, the control system, the water-cooled heat dissipation system, and the feeding bin are all installed outside the insulated box 15, which can prevent these working mechanisms from operating at excessively high temperatures.

[0043] This invention innovatively designs a water-cooled heat dissipation structure for the printing nozzle, which uses a water-cooled pipe and a water-cooled radiator to dissipate heat, effectively reducing the temperature of the filament above the printing nozzle and preventing premature melting and pipe blockage of the printing filament, allowing the filament to melt and be extruded smoothly. The innovative design of the printing cavity structure achieves a stable thermal circulation effect through internal heating and ventilation devices, enabling uniform temperature distribution in the printing cavity and avoiding warping and deformation that occurs when printing high-temperature resistant materials with conventional printers, thereby achieving high-precision 3D printing of high-temperature resistant special engineering plastics.

[0044] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and improvements without departing from the principles of the present invention, and these modifications and improvements should also be considered to fall within the protection scope of the present invention.

Claims

1. A high-temperature 3D printer capable of printing PEEK material, characterized in that, The device includes a movable printhead assembly, a housing assembly, a lifting printing platform, a control system, and a frame. The movable printhead assembly is mounted on top of the housing assembly and includes a printhead, a filament feeding mechanism, and horizontal moving parts along the X and Y axes. A water-cooled heat dissipation sleeve is provided on the outside of the printhead. The filament feeding mechanism is mounted above the printhead. The printhead is mounted on the printhead bracket of the horizontal moving parts along the X and Y axes, and the printhead bracket is driven by a stepper motor. The box assembly is installed on the upper part of the frame. The box assembly has a loading door on the front side. The box assembly has an insulated box inside. The upper port of the insulated box has an insulation ring. The insulated box has a heating and blowing device inside. The lifting printing platform is installed inside the frame. The lifting printing platform includes a Z-axis lifting motor installed at the bottom of the printer and a printing platform above it. The Z-axis lifting motor drives the printing platform to lift and lower via a lead screw. A heating plate is provided at the bottom of the printing platform.

2. The high-temperature 3D printer capable of printing PEEK material according to claim 1, characterized in that, The heating and blowing device includes a pair of curved heating tubes arranged on the left and right sides of the insulated box.

3. The high-temperature 3D printer capable of printing PEEK material according to claim 2, characterized in that, The heating element is equipped with a fan, which is placed in the groove of the heating element. An exhaust fan is installed on the rear side of the insulation box. An internal air duct is provided inside the insulation box. The fan and the exhaust fan are distributed on the internal air duct. An air outlet is provided in the internal air duct directly opposite the fan.

4. The high-temperature 3D printer capable of printing PEEK material according to claim 3, characterized in that, The top of the insulated box is equipped with a telescopic accordion cover, which can move with the print head.

5. The high-temperature 3D printer capable of printing PEEK material according to claim 1, characterized in that, A linear guide rail is fixedly installed on the inner side of the frame, and the printing platform is slidably installed in the linear guide rail.

6. The high-temperature 3D printer capable of printing PEEK material according to claim 1, characterized in that, The right end of the housing assembly is provided with a storage bin for preheating filamentous materials.

7. The high-temperature 3D printer capable of printing PEEK material according to claim 1, characterized in that, The bottom of the frame is also equipped with a water-cooling heat dissipation device, and the lifting printing platform, control system, water-cooling heat dissipation system and feeding hopper are all installed outside the insulated box.

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