High-integration 3D printer extrusion device with electronic cooling function
By using an electronic cooling system in the 3D printer extrusion device to monitor and control the throat temperature in real time, the problem of poor heat dissipation in the prior art is solved, the printing failure rate is significantly reduced, and the stable state of the material during the printing process is ensured.
Patent Information
- Application Number
- CN202421609052.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The heat dissipation properties of the extrusion devices of existing 3D printers are poor, resulting in the material being softened in advance under high temperature environments, resulting in clogging of the extrusion device and failure to print.
Design a high-integration 3D printer extrusion device with electronic cooling, using a combination of TEC electronic cooling plate and annular heater, to monitor and control the throat temperature in real time through the control panel to ensure that the material remains at the appropriate temperature during printing.
It effectively reduces the printing failure rate in high temperature environments, improves the heat dissipation ability of the extrusion device, and ensures that the material does not soften in advance during the printing process, thereby ensuring printing quality.
Smart Images
Figure CN223013897U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of 3D printers, in particular to a highly integrated 3D printer extrusion device with electronic cooling. Background Art
[0002] A 3D printer is a device that uses digital model files to manufacture three-dimensional objects by stacking materials layer by layer. Its basic working process includes steps such as file preparation, slicing processing, printing settings, printing process, and post-processing.
[0003] Currently, in terms of the appearance structure, the air outlet of the blowing annular air duct of most 3D printer extrusion devices is flush with the nozzle or hidden in the air duct housing. When we need to observe the extrusion state, it blocks the line of sight; secondly, the housing of the flush nozzle has poor clearance ability, which may cause sticking of materials when printing goes wrong, resulting in huge plastic "tumors", posing a safety hazard, and also restricting the operation of the multi-axis linkage function (the multi-axis platform tilts at a large angle to reduce the support surface).
[0004] In terms of the internal heat dissipation structure, the heat dissipation of the throat tube of the extrusion device is mainly air-cooled, mainly using fans and hollowed-out aluminum blocks. Heat dissipation is carried out through air circulation and is very limited by the ambient temperature. The softening temperature of ordinary pla materials is between 40 degrees and 50 degrees. In summer, when the ventilation in the printer cabin is poor, the temperature can often reach 50 - 60 degrees, causing premature softening of the materials, resulting in blockage of the extrusion device and further leading to printing failure. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a highly integrated 3D printer extrusion device with electronic cooling to solve the problem of poor heat dissipation in the background art.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A highly integrated D printer extrusion device with electronic cooling, comprising:
[0008] A front shell;
[0009] A rear shell; the rear shell is in contact with the front shell;
[0010] A drag chain bracket; the drag chain bracket is arranged between the front shell and the rear shell;
[0011] A hardware bracket; the hardware bracket is arranged at the bottom of the drag chain bracket;
[0012] It also includes a cooling component, the cooling component includes a control board, the control board is arranged on one side of the rear shell, a main plastic part is installed inside the rear shell, a heat-conducting aluminum block is arranged on one side of the main plastic part, a TEC electronic cooling sheet is installed on one side of the heat-conducting aluminum block, and an extrusion component for extruding the material wire is arranged on one side of the rear shell.
[0013] On the basis of the above technical solution, the present utility model also provides the following optional technical solutions:
[0014] In an optional solution: the extrusion component includes a motor, the motor is installed on the side of the rear shell away from the front shell, a reduction gear is arranged at the output end of the motor, a first groove is formed on the main plastic part, a pressing wheel slider is arranged in the first groove, the pressing wheel on the pressing wheel slider meshes with the reduction gear, a second groove is formed on the pressing wheel slider, and a spring is arranged in the second groove.
[0015] In an optional solution: a cutting component for cutting the material wire is arranged inside the rear shell, the cutting component includes a cutter slider, the cutter slider is arranged inside the rear shell, a third groove is formed on one side of the cutter slider, the other end of the spring is embedded in the third groove, a trigger is movably connected to the side of the cutter slider away from the spring, and an inclined-edge blade is also arranged in the third groove.
[0016] In an optional solution: a melting component for melting the material wire is arranged at the bottom of the heat-conducting aluminum block, the melting component includes an annular heater, the annular heater is arranged at the bottom of the heat-conducting aluminum block, a nozzle is arranged on the annular heater, and a blowing material annular air duct is arranged below the front shell.
[0017] In an optional solution: a heat dissipation component for dissipating heat from the model being printed and formed is arranged inside the front shell, the heat dissipation component includes a turbo fan, the turbo fan is arranged between the inner side of the front shell and the hardware bracket, a heat dissipation aluminum sheet is arranged on one side of the hardware bracket, and an electronic fan is arranged on the other side of the heat dissipation aluminum sheet.
[0018] In an optional solution: heat-conducting silicone grease is applied to the contact surface between the heat dissipation aluminum sheet and the TEC electronic cooling sheet, and heat-conducting glue is applied between the TEC electronic cooling sheet and the heat-conducting aluminum block.
[0019] In an optional solution: an indicator light board is installed on the front shell, and a detection sensor is arranged on one side of the main plastic part.
[0020] In an optional solution: a laser sensor is arranged on one side of the heat-conducting aluminum block.
[0021] In an optional solution: the TEC electronic cooling sheet, the motor, the annular heater, the laser sensor, the turbo fan, and the electronic fan are all electrically connected to the control board.
[0022] In an alternative solution: the included angle between the nozzle and the rear shell is designed to be 30°.
[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0024] 1. The present utility model has a smaller width, which can increase the forming area of the printer in the X-axis direction. The included angle between the bottom nozzle and the shell is designed to be 30°, improving the obstacle avoidance ability and avoiding the collision between the device and the printed model; at the same time, it provides a hardware basis for the multi-z-axis printing platform linkage support function.
[0025] 2. The present utility model uses an active electronic cooling system to monitor and control the temperature of the throat pipe in real time, preventing the material from softening prematurely before reaching the nozzle and deforming and expanding under the extrusion pressure to block the pipeline. Greatly reducing the printing failure rate in high-temperature environments.
[0026] 3. The application of the inclined-edge blade in the present utility model makes the shearing force during material cutting larger, enabling a smaller trigger to be designed and reducing the overall size of the extrusion device. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the whole and after installation completion of the present utility model.
[0028] Figure 2 It is a schematic diagram of the rear shell assembly after installation completion of the present utility model.
[0029] Figure 3 It is a schematic diagram of the front shell assembly after installation completion of the present utility model.
[0030] Figure 4 It is a schematic diagram of the parts decomposition of the present utility model.
[0031] Among them: 100, front shell; 200, rear shell; 300, drag chain frame; 400, hardware bracket; 501, control board; 502, main plastic part; 503, heat-conducting aluminum block; 504, TEC electronic cooling sheet; 601, motor; 602, reduction gear; 603, pressure wheel slider; 604, spring; 701, cutter slider; 702, trigger; 703, inclined-edge blade; 801, annular heater; 802, nozzle; 803, blowing annular air duct; 901, turbine fan; 902, heat-dissipating aluminum sheet; 903, electronic fan. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0032] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0033] In one embodiment, as Figures 1 - 4, A highly integrated 3D printer extrusion device with electronic cooling, comprising: a front shell 100, a rear shell 200, a drag chain frame 300, a hardware bracket 400 and a cooling component. The rear shell 200 abuts against the front shell 100; the drag chain frame 300 is disposed between the front shell 100 and the rear shell 200; the hardware bracket 400 is disposed at the bottom of the drag chain frame 300; the cooling component includes a control board 501, the control board 501 is disposed on one side of the rear shell 200, a main plastic part 502 is installed inside the rear shell 200, a heat-conducting aluminum block 503 is provided on one side of the main plastic part 502, a TEC electronic cooling fin 504 is installed on one side of the heat-conducting aluminum block 503, and an extrusion component for extruding the material wire is provided on one side of the rear shell 200. The operation of the TEC electronic cooling fin 504 is controlled by the control board 501, and then the power of the TEC electronic cooling fin 504 is adjusted by the pid algorithm to keep the temperature continuously maintained at 30 degrees Celsius, so that the upper part of the annular heater 801, the part in contact with the heat-conducting aluminum block 503, is stabilized at 30 degrees Celsius.
[0034] In one embodiment, as Figure 4 shown, the extrusion component includes a motor 601, the motor 601 is installed on the side of the rear shell 200 away from the front shell 100, a reduction gear 602 is provided at the output end of the motor 601, a first groove is formed on the main plastic part 502, a pressure wheel slider 603 is provided in the first groove, the pressure wheel on the pressure wheel slider 603 meshes with the reduction gear 602, a second groove is formed on the pressure wheel slider 603, a spring 604 is provided in the second groove, and the motor 601 drives the reduction gear 602, and the reduction gear 602 drives the pressure wheel slider 603 to drive the downward movement of the material wire through friction.
[0035] In one embodiment, as Figure 1 and Figure 4 shown, a cutting component for cutting the material wire is provided inside the rear shell 200. The cutting component includes a cutter slider 701, the cutter slider 701 is provided inside the rear shell 200, a third groove is formed on one side of the cutter slider 701, the other end of the spring 604 is embedded in the third groove, a trigger 702 is movably connected to the side of the cutter slider 701 away from the spring 604, and an inclined-edge blade 703 is further provided in the third groove. The trigger 702 is pushed, so as to push the cutter slider 701 with the inclined-edge blade 703, and push the inclined-edge blade 703 to the left to enter the guide pipe to cut the material wire in the pipe.
[0036] In one embodiment, as Figure 2 and Figure 4As shown, a melting assembly for melting the material wire is provided at the bottom of the heat-conducting aluminum block 503. The melting assembly includes an annular heater 801 provided at the bottom of the heat-conducting aluminum block 503. A nozzle 802 is provided on the annular heater 801. A blowing material annular air duct 803 is provided below the front shell 100. Through the mutual cooperation between the annular heater 801 and the nozzle 802, the effect of melting the material wire can be achieved.
[0037] In one embodiment, as Figure 2 and Figure 4 shown, a heat dissipation assembly for dissipating heat from the model being printed and formed is provided inside the front shell 100. The heat dissipation assembly includes a turbo fan 901 provided between the inner side of the front shell 100 and the hardware bracket 400. A heat dissipation aluminum fin 902 is provided on one side of the hardware bracket 400. An electronic fan 903 is provided on the other side of the heat dissipation aluminum fin 902. When the turbo fan 901 operates, the air flow is increased and blown out through the blowing material annular air duct 803 to strongly dissipate heat from the model being printed and formed. The electronic fan 903 works together with the TEC electronic cooling sheet 504.
[0038] In one embodiment, as Figure 4 shown, heat-conducting silicone grease is applied to the contact surface between the heat dissipation aluminum fin 902 and the TEC electronic cooling sheet 504, and heat-conducting glue is applied between the TEC electronic cooling sheet 504 and the heat-conducting aluminum block 503 to prevent heat from being transferred to the TEC electronic cooling sheet 504.
[0039] In one embodiment, as Figure 4 shown, an indicator light board is installed on the front shell 100. A detection sensor is provided on one side of the main body plastic part 502. The indicator light board is connected to the printer main board through a cable. Through the color definition in the system, different information is prompted in different colors.
[0040] In one embodiment, as Figure 4 shown, a laser sensor is provided on one side of the heat-conducting aluminum block 503. The laser sensor is connected to the printer system through a cable, and then the laser sensor can level and calibrate the nozzle 802 and the printing platform.
[0041] In one embodiment, as Figure 4 shown, the TEC electronic cooling sheet 504, the motor 601, the annular heater 801, the laser sensor, the turbo fan 901, and the electronic fan 903 are all electrically connected to the control board 501 and are controlled to operate through the control board 501.
[0042] In one embodiment, as Figure 2As shown, the included angle between the nozzle 802 and the rear case 200 is designed to be 30°, which improves the obstacle avoidance ability of the nozzle 802 and avoids the collision between the device and the printed model.
[0043] The above embodiment discloses a highly integrated 3D printer extrusion device with electronic cooling. When the device works, the operating temperature of the annular heater 801 is in the range of 200 - 300 degrees Celsius, causing the temperature of the heat-conducting aluminum block 503 to rise. The TEC electronic cooling fin 504 will also have a temperature rise. The TEC electronic cooling fin 504 is connected to the control board 501. When the detected temperature exceeds 30 degrees Celsius, the TEC electronic cooling fin 504 and the electronic fan 903 start to work. The power of the TEC electronic cooling fin 504 is adjusted through the pid algorithm to keep the temperature continuously maintained at 30 degrees Celsius. Thus, the upper part of the annular heater 801, the part in contact with the heat-conducting aluminum block 503, is stabilized at 30 degrees Celsius. When the device needs to replace the material wire, it is necessary to control the device to move the linear guide rail slider to the right, driving the device to move to the right; through the end limit, push the trigger 702 to the left, thereby pushing the cutter slider 701 with the bevel blade 703, and pushing the bevel blade 703 to the left into the feeding pipe to cut the material wire in the pipe. The motor 601 drives the reduction gear 602, and the reduction gear 602 drives the pressure wheel slider 603, driving the downward movement of the material wire through friction. Through the operation of the turbine fan 901, the airflow is increased and blown out through the blowing annular air duct 803 to strongly dissipate heat from the model being printed and formed. The mutual cooperation between the annular heater 801 and the nozzle 802 can achieve the effect of melting the material wire. Finally, the laser sensor is connected to the printer system through a cable, and then the laser sensor can calibrate the nozzle 802 and the printing platform.
[0044] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A highly integrated 3D printer extruder with electronic cooling, comprising: Front shell (100); A rear shell (200); the rear shell (200) and the front shell (100) abut against each other; A drag chain frame (300); the drag chain frame (300) is arranged between the front shell (100) and the rear shell (200); A hardware bracket (400); the hardware bracket (400) is arranged at the bottom of the drag chain rack (300); The invention is characterized in that it also includes a cooling component, wherein the cooling component includes a control board (501), the control board (501) is arranged on one side of the rear shell (200), a main plastic part (502) is installed inside the rear shell (200), a heat-conducting aluminum block (503) is arranged on one side of the main plastic part (502), a TEC electronic cooling sheet (504) is installed on one side of the heat-conducting aluminum block (503), and an extrusion component for extruding material wire is arranged on one side of the rear shell (200).
2. A highly integrated 3D printer extruder with electronic cooling according to claim 1, characterized in that: The extrusion assembly comprises a motor (601), the motor (601) being mounted on a side of the rear shell (200) away from the front shell (100), a reduction gear (602) being provided at the output end of the motor (601), a first groove being provided on the main plastic part (502), a pressure wheel slider (603) being provided in the first groove, a pressure wheel on the pressure wheel slider (603) being meshed with the reduction gear (602), a second groove being provided on the pressure wheel slider (603), a spring (604) being provided in the second groove.
3. A highly integrated 3D printer extruder with electronic cooling according to claim 2, characterized in that: A cutting assembly for cutting the material wire is arranged inside the rear shell (200), and the cutting assembly comprises a cutter slider (701). The cutter slider (701) is arranged inside the rear shell (200), a third groove is opened on one side of the cutter slider (701), the other end of the spring (604) is embedded in the third groove, a trigger (702) is movably connected to the side of the cutter slider (701) away from the spring (604), and a bevel blade (703) is also arranged in the third groove.
4. A highly integrated 3D printer extruder with electronic cooling according to claim 3, characterized in that: A melting component for melting the material wire is provided at the bottom of the heat-conducting aluminum block (503), and the melting component comprises an annular heater (801). The annular heater (801) is provided at the bottom of the heat-conducting aluminum block (503), and a nozzle (802) is provided on the annular heater (801). A blowing annular air duct (803) is provided below the front shell (100).
5. A highly integrated 3D printer extruder with electronic cooling according to claim 4, characterized in that: A heat dissipation component for dissipating heat from a model being printed is provided in the front shell (100), and the heat dissipation component comprises a turbo fan (901). The turbo fan (901) is provided between the inner side of the front shell (100) and the hardware bracket (400). A heat dissipation aluminum sheet (902) is provided on one side of the hardware bracket (400), and an electronic fan (903) is provided on the other side of the heat dissipation aluminum sheet (902).
6. A highly integrated 3D printer extruder with electronic cooling according to claim 5, characterized in that: The contact surface between the heat dissipation aluminum sheet (902) and the TEC electronic cooling sheet (504) is coated with thermal conductive silicone grease, and the contact surface between the TEC electronic cooling sheet (504) and the thermal conductive aluminum block (503) is coated with thermal conductive glue.
7. A highly integrated 3D printer extruder with electronic cooling according to claim 1, characterized in that: An indicator light board is installed on the front shell (100), and a detection sensor is provided on one side of the main plastic part (502).
8. A highly integrated 3D printer extruder with electronic cooling according to claim 5, characterized in that: A laser sensor is provided on one side of the heat-conducting aluminum block (503).
9. A highly integrated 3D printer extruder with electronic cooling according to claim 8, characterized in that: The TEC electronic cooling sheet (504), the motor (601), the annular heater (801), the laser sensor, the turbo fan (901) and the electronic fan (903) are all connected to the control board (501) by wires.
10. A highly integrated 3D printer extruder with electronic cooling according to claim 4, characterized in that: The included angle between the nozzle (802) and the rear shell (200) is designed to be 30°.