A 3D printer capable of rapid heat dissipation

Abstract

The present invention discloses a 3D printer capable of rapid heat dissipation, comprising a protective shell, a working platform is arranged inside the protective shell, a driving device is fixedly connected to the top of the inner wall of the protective shell, a printing nozzle is arranged at the bottom of the driving device, a first heat dissipation fin and a second heat dissipation fin are respectively fixedly connected to the surface of the printing nozzle through a heat conduction plate, and a blowing device is fixedly connected to the inner wall of the protective shell. The present invention arranges the first heat dissipation fin and the second heat dissipation fin, and when the wind blows to the first heat dissipation fin, the heat on the surface of the first heat dissipation fin is taken away, and the airflow is diverted by the first heat dissipation fin and directed to the second heat dissipation fin, thereby forming an air reflux, so that the heat dissipation efficiency is higher, the airflow is collected by the first fan blade, and the airflow is pressurized by the second fan blade, the heat dissipation speed is related to the air flow and the wind pressure, and increasing the wind pressure can greatly improve the heat dissipation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of 3D printers, in particular to a 3D printer capable of rapidly dissipating heat. Background Art

[0002] A printer is one of the output devices of a computer, used to print the results of computer processing on relevant media. Printers include 3D printers, three-dimensional printing, which is a machine of rapid prototyping technology. It is a technology that uses powdered metal or plastic and other bondable materials as the basis of a digital model file to construct objects by printing layer by layer. In the past, it was often used to make models in the fields of mold manufacturing, industrial design, etc., and is now gradually being used for the direct manufacturing of some products. In particular, some high-value applications (such as hip joints or teeth, or some aircraft parts) already have parts printed using this technology.

[0003] As one of the core components of a 3D printer, the nozzle of a 3D printer largely determines the quality of molding. The smoothness of the filament flowing out of the extruder and the temperature of the filament directly affect the accuracy of 3D printing. However, if the nozzle temperature is too high, other parts will be dissolved and burned, so the nozzle temperature needs to be controlled within a certain range. At present, a cooling fan is usually installed at the nozzle. During the printing process, the vibration generated by the operation of the cooling fan will affect the molding quality of the 3D printer. Summary of the invention

[0004] The purpose of the present invention is to provide a 3D printer that can quickly dissipate heat, which has the advantage of being able to quickly dissipate heat and reduce the temperature of the nozzle, thereby solving the problem of excessive nozzle temperature and poor molding quality of printed objects.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a 3D printer capable of rapid heat dissipation, comprising a protective shell, a working platform being arranged inside the protective shell, a driving device being fixedly connected to the top of the inner wall of the protective shell, a printing head being arranged at the bottom end of the driving device, a first heat dissipation fin and a second heat dissipation fin being fixedly connected to the surface of the printing head through a heat conducting plate, and a blowing device being fixedly connected to the inner wall of the protective shell.

[0006] The blowing device includes a rotating shaft and a motor, the surface of the rotating shaft is fixedly connected with a first fan blade and a second fan blade, the output shaft of the motor is fixedly connected with a driving gear, the surface of the rotating shaft is fixedly connected with a driven gear, and the driving gear is meshed with the driven gear.

[0007] Preferably, the number of the first heat dissipation fins and the number of the second heat dissipation fins are both two, the two first heat dissipation fins are left-right symmetrical with the print head as the center, and the two second heat dissipation fins are front-back symmetrical with the print head as the center.

[0008] Preferably, the first heat dissipation fin is in a triangular shape, and the opening angle of the first heat dissipation fin is 120 degrees; the second heat dissipation fin is in an arc shape, and the second heat dissipation fin is located outside the first heat dissipation fin.

[0009] Preferably, the number of the blowing devices is two, and the two blowing devices are symmetrically arranged on the inner wall of the protective shell, and the blowing devices are directly opposite to the first heat dissipation fins.

[0010] Preferably, the diameter of the first fan blade is twice the diameter of the second fan blade, and the first fan blade is located outside the second fan blade.

[0011] Preferably, the diameter of the driving gear is twice the diameter of the driven gear.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The present invention provides a first heat dissipation fin and a second heat dissipation fin. When wind blows toward the first heat dissipation fin, it will take away the heat on the surface of the first heat dissipation fin. The airflow is diverted by the first heat dissipation fin and directed to the second heat dissipation fin, thereby forming an air reflux, which makes the heat dissipation efficiency higher.

[0014] (2) The present invention uses a first fan blade and a second fan blade. The first fan blade collects airflow and the second fan blade pressurizes the airflow. The heat dissipation speed is related to the air flow and wind pressure. Increasing the wind pressure can greatly improve the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional structural schematic diagram of the front view of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the top view of the printing nozzle of the present invention.

[0017] In the figure: 1. protective shell; 2. working platform; 3. driving device; 4. printing nozzle; 5. heat conduction plate; 6. first heat dissipation fin; 7. second heat dissipation fin; 8. blowing device; 81. rotating shaft; 82. first fan blade; 83. second fan blade; 84. motor; 85. driving gear; 86. driven gear. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-2 A 3D printer capable of rapid heat dissipation comprises a protective shell 1, the protective shell 1 is provided to prevent dust, and a roller can be optionally installed at the bottom of the protective shell 1 to facilitate the movement of the 3D printer, a working platform 2 is arranged inside the protective shell 1, a driving device 3 is fixedly connected to the top of the inner wall of the protective shell 1, a printing nozzle 4 is arranged at the bottom of the driving device 3, the driving device 3 comprises an X-axis motion device, a Y-axis motion device and a Z-axis motion device, the printing nozzle 4 can be moved arbitrarily by the driving device 3, a first heat dissipation fin 6 and a second heat dissipation fin 7 are respectively fixedly connected to the surface of the printing nozzle 4 through a heat conducting plate 5, the number of the first heat dissipation fin 6 and the second heat dissipation fin 7 are both two, the two first heat dissipation scales 6 are symmetrical with the printing nozzle 4 as the center, and the two The second heat dissipation fin 7 is symmetrical front to back with the print head 4 as the center, the first heat dissipation fin 6 is in the shape of a triangle, and the opening angle of the first heat dissipation fin 6 is 120 degrees, the second heat dissipation fin 7 is in the shape of an arc, and the second heat dissipation fin 7 is located on the outside of the first heat dissipation fin 6, and the inner wall of the protective shell 1 is fixedly connected with a blowing device 8. There are two blowing devices 8, and the two blowing devices 8 are symmetrically arranged on the inner wall of the protective shell 1, and the blowing devices 8 are directly opposite to the first heat dissipation fin 6. The air is guided by the first heat dissipation fin 6, so that when the air flows through the first heat dissipation fin 6, it will be separated to both sides along the surface of the first heat dissipation fin 6, so that the air flow continues to flow to the second heat dissipation fin 7, so that the resistance to the air flow is reduced and maximized.

[0020] The blowing device 8 includes a rotating shaft 81 and a motor 84. The surface of the rotating shaft 81 is fixedly connected with a first fan blade 82 and a second fan blade 83. The diameter of the first fan blade 82 is twice the diameter of the second fan blade 83, and the first fan blade 82 is located on the outside of the second fan blade 83. The output shaft of the motor 84 is fixedly connected with a driving gear 85. The surface of the rotating shaft 81 is fixedly connected with a driven gear 86. The driving gear 85 is meshed with the driven gear 86. The diameter of the driving gear 85 is twice the diameter of the driven gear 86. Since the diameter of the driving gear 85 is larger, the driven gear 86 will rotate multiple times for every rotation of the driving gear 85, thereby increasing the rotation speed of the rotating shaft 81, making the air flow stronger and enhancing the heat dissipation effect.

[0021] When in use, the motor 84 operates to drive the first fan blade 82 and the second fan blade 83 to rotate. The airflow is collected by the first fan blade 82, and the airflow is pressurized by the second fan blade 83. The heat dissipation speed is related to the air flow and wind pressure. Increasing the wind pressure can greatly improve the heat dissipation efficiency. When the wind blows towards the first heat dissipation fin 6, it will take away the heat on the surface of the first heat dissipation fin 6, and the airflow is diverted by the first heat dissipation fin 6 and directed to the second heat dissipation fin 7, thereby forming an air reflux, which makes the heat dissipation efficiency higher.

[0022] In summary: (1) the present invention provides a first heat dissipation fin 6 and a second heat dissipation fin 7. When wind blows toward the first heat dissipation fin 6, it will take away the heat on the surface of the first heat dissipation fin 6, and the airflow will be diverted by the first heat dissipation fin 6 and directed to the second heat dissipation fin 7, thereby forming an air reflux, which makes the heat dissipation efficiency higher.

[0023] (2) The present invention uses the first fan blade 82 and the second fan blade 83. The first fan blade 82 collects the airflow and the second fan blade 83 pressurizes the airflow. The heat dissipation speed is related to the air flow and wind pressure. Increasing the wind pressure can greatly improve the heat dissipation efficiency.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprising a reference structure" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D printer capable of rapid heat dissipation, comprising a protective housing (1), characterized in that: A working platform (2) is arranged inside the protective shell (1); a driving device (3) is fixedly connected to the top of the inner wall of the protective shell (1); a printing head (4) is provided at the bottom of the driving device (3); a first heat dissipation fin (6) and a second heat dissipation fin (7) are respectively fixedly connected to the surface of the printing head (4) via a heat conduction plate (5); and a blowing device (8) is fixedly connected to the inner wall of the protective shell (1); The blowing device (8) comprises a rotating shaft (81) and a motor (84); a first fan blade (82) and a second fan blade (83) are fixedly connected to the surface of the rotating shaft (81); a driving gear (85) is fixedly connected to the output shaft of the motor (84); a driven gear (86) is fixedly connected to the surface of the rotating shaft (81); the driving gear (85) meshes with the driven gear (86); the number of the first heat sink (6) and the second heat sink (7) are both two; the two first heat sinks (6) are symmetrical with respect to the print head (4) at the left and right, and the two second heat sinks (7) are symmetrical with respect to the print head (4) at the front and back; the first heat sink (6) and the second heat sink (7) are symmetrical with respect to the print head (4) at the center; The heat fin (6) is triangular in shape, and the opening angle of the first heat dissipation fin (6) is 120 degrees; the second heat dissipation fin (7) is arc-shaped, and the second heat dissipation fin (7) is located outside the first heat dissipation fin (6); the number of the blowing devices (8) is two, and the two blowing devices (8) are symmetrically arranged on the inner wall of the protective shell (1), and the blowing devices (8) are directly opposite to the first heat dissipation fin (6); the diameter of the first fan blade (82) is twice the diameter of the second fan blade (83), and the first fan blade (82) is located outside the second fan blade (83); the diameter of the driving gear (85) is twice the diameter of the driven gear (86).

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