3D printer cooling device

Abstract

The utility model belongs to the technical field of 3D printers, and discloses a 3D printer cooling device which comprises a mounting base arranged on a printing head, a cavity is formed in the mounting base, a mounting opening communicating with the cavity is formed in one side of the mounting base, a cooling fan is arranged in the mounting opening, an air outlet is formed in the bottom of the mounting base, and a cooling fan is arranged in the air outlet. The air outlet communicates with the cavity, and an air guide assembly is arranged at the bottom of the mounting base. The cooling fan continuously conveys outside air to the cavity, and the air in the cavity is exhausted from the air outlet to form directional airflow circulation. The air guide assembly guides and adjusts air flow exhausted from the air outlet, it is guaranteed that a wire outlet of the printing head has proper air flow strength, the air flow makes contact with the wire at the extrusion moment of the wire, heat of the wire extruded out of the wire outlet is rapidly taken away, when a new material layer is stacked on the upper portion, a printing material on the lower layer is cooled and solidified, stability between layers is guaranteed, and the printing efficiency is improved. Therefore, the size accuracy and the surface smoothness of finished products are ensured.

Description

Technical Field

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

[0002] A 3D printer, also known as a three-dimensional printer, is a rapid prototyping device based on additive manufacturing technology. It transforms a digital model into a physical object by depositing materials layer by layer.

[0003] However, in the pursuit of high-efficiency and rapid printing, due to the mismatch between printing speed and material cooling rate, the next layer of printing material often begins to accumulate on top of it before it has fully cooled and solidified, remaining in a semi-solid, softened state. At this point, the newly extruded filament, under the pressure of the extrusion head, will compress the insufficiently solidified filament below, not only altering the intended shape of the lower filament but also causing misalignment or deformation between layers. Furthermore, this accumulated deformation error amplifies with the increase in the number of printed layers, ultimately leading to significant dimensional deviations and surface defects in the finished product. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a 3D printer cooling device.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a 3D printer cooling device, including a mounting base disposed on the print head, the mounting base having a cavity, a mounting port communicating with the cavity on one side of the mounting base, a cooling fan disposed in the mounting port, an air outlet disposed at the bottom of the mounting base communicating with the cavity, and an air guide assembly disposed at the bottom of the mounting base for guiding and regulating the airflow discharged from the air outlet.

[0006] By adopting the above technical solution, a mounting base, a cooling fan, and an air guide assembly are installed. The cooling fan continuously delivers outside air to the cavity, and the air inside the cavity is discharged from the air outlet, forming a directional airflow circulation. The air guide assembly guides and adjusts the airflow discharged from the air outlet to ensure that there is a suitable airflow intensity at the filament exit point of the print head. The airflow comes into contact with the filament at the moment of extrusion, quickly removing the heat of the filament extruded from the filament exit point. When a new material layer is accumulated on top, the lower printing material has already cooled and solidified, ensuring the stability between layers, thereby ensuring the dimensional accuracy and surface flatness of the finished product.

[0007] Furthermore, the height of the air guide assembly is higher than the lower end of the printhead.

[0008] Furthermore, the air guiding assembly includes an installation pipe disposed at the bottom of the mounting base, the installation pipe being connected to an air outlet, an air supply pipe being connected to the installation pipe, two air outlets being opened on the bottom surface of the air supply pipe, two fixed seats being symmetrically disposed on the bottom surface of the air supply pipe, an air guide plate being hinged to the fixed seat, a fixed shaft being disposed on the side of the air guide plate away from the fixed seat, a lifting rod being vertically slidably disposed on the air supply pipe, a fixing assembly being disposed on the air supply pipe for fixing the lifting rod, a lifting plate being horizontally disposed at the lower end of the lifting rod, two strip holes being opened on the lifting plate, and the fixed shaft being slidably connected to the corresponding strip holes.

[0009] The system includes an installation pipe, an air supply pipe, a lifting rod, and a slotted hole. Air passes through the installation pipe into the air supply pipe and is then discharged from the outlet. The lifting rod moves the lifting plate up and down. As the lifting plate moves, the fixed shaft slides within the slotted hole, causing the air guide plate to rotate and adjust its angle. This changes the airflow intensity at the wire outlet, ensuring optimal cooling and molding of the model.

[0010] Furthermore, the fixing component includes a connecting seat disposed on the side wall of the air duct, the connecting seat having a vertically opened sliding hole, the lifting rod being slidably connected to the sliding hole, the connecting seat having a horizontally opened threaded hole, the threaded hole communicating with the sliding hole, a threaded rod being spirally disposed in the threaded hole, and a handle being disposed at the end of the threaded rod away from the lifting rod.

[0011] By adopting the above technical solution set up The connector consists of a connecting seat, a threaded rod, and a handle. Turning the handle causes the threaded rod to rotate. When the end of the threaded rod contacts the lifting rod, the positions of the lifting rod, the lifting plate, and the fixed shaft are fixed, thereby fixing the position of the air guide plate.

[0012] Furthermore, the air supply pipe is shaped like a square, with the two air outlets symmetrically arranged on the bottom surface of the air supply pipe, and the filament outlet of the print head located in the middle of the air supply pipe.

[0013] By adopting the above technical solution, the two air outlets are symmetrically arranged on the bottom of the air duct. The method of air outlet on both sides avoids the situation where, when air is vented from one side, the material filaments that have not been fully cooled and hardened are blown to the other side and tilted when the wind force is strong, which would cause errors in the model size.

[0014] Furthermore, the mounting pipe includes a first L-shaped pipe and two second L-shaped pipes connected thereto. The bottom of the mounting base is provided with an air outlet, which is connected to the cavity. The vertical section of the first L-shaped pipe is connected to the air outlet, and the horizontal section of the second L-shaped pipe is connected to the first L-shaped pipe, while the vertical section is connected to the air supply pipe.

[0015] Furthermore, the top surface of the air duct has two symmetrically arranged air inlets, which are connected to the vertical section of the second L-shaped pipe.

[0016] Furthermore, the bottom surface of the air duct is symmetrically provided with openings, and protrusions are provided on both sides of the openings on the bottom surface of the air duct. Sliding grooves are provided on the protrusions, and a baffle is slidably provided in both sliding grooves.

[0017] By adopting the above technical solution, with the addition of protrusions and baffles, the air in the air duct can be discharged through the air outlet and opening. By adjusting the degree of obstruction of the opening by sliding the baffle, the exhaust volume of the opening can be adjusted, thereby adjusting the exhaust volume of the air outlet.

[0018] Furthermore, the top surface of the wind deflector slides in contact with the bottom surface of the air duct.

[0019] Furthermore, a U-shaped plate is provided inside the air duct, and several through holes are opened on the U-shaped plate.

[0020] In summary, this utility model has the following beneficial effects: This application includes a mounting base, a cooling fan, and an air guide assembly. The cooling fan continuously delivers outside air to the cavity, and the air inside the cavity is discharged from the air outlet, forming a directional airflow circulation. The air guide assembly guides and adjusts the airflow discharged from the air outlet, ensuring a suitable airflow intensity at the filament outlet of the print head. The airflow contacts the filament at the moment of extrusion, quickly removing the heat from the extruded filament. When a new material layer is deposited on top, the lower printing material has already cooled and solidified, ensuring stability between layers and thus guaranteeing the dimensional accuracy and surface smoothness of the finished product. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the print head of the 3D printer according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the mounting base according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the air supply pipe according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the air duct in an embodiment of this utility model.

[0026] In the diagram: 10. Mounting base; 11. Cavity; 12. Cooling fan; 20. Mounting tube; 21. First L-shaped tube; 22. Second L-shaped tube; 30. Air duct; 31. Air outlet; 32. Fixing base; 33. Air guide plate; 34. Fixing shaft; 35. Opening; 36. Protrusion; 37. Slide groove; 38. Baffle plate; 40. Lifting rod; 41. Lifting plate; 42. Strip hole; 50. Fixing component; 51. Connecting base; 52. Threaded rod; 53. Handle; 60. U-shaped plate; 61. Through hole. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] like Figure 1-5 As shown in the figure, this application discloses a 3D printer cooling device, including a mounting base 10 and a cooling fan 12. The mounting base 10 is disposed on the print head of the 3D printer. A cavity 11 is formed inside the mounting base 10. A mounting port communicating with the cavity 11 is formed on one side of the mounting base 10. The cooling fan 12 is disposed in the mounting port. An air outlet is formed at the bottom of the mounting base 10, which communicates with the cavity 11. An air guide assembly is provided at the bottom of the mounting base 10 to guide and regulate the airflow discharged from the air outlet. The cooling fan continuously delivers outside air to the cavity, and the air in the cavity is discharged from the air outlet, forming a directional airflow circulation. The air guide assembly guides and regulates the airflow discharged from the air outlet to ensure that there is a suitable airflow intensity at the filament outlet of the print head. The airflow comes into contact with the filament at the moment of extrusion, quickly removing the heat of the filament extruded from the filament outlet. When a new material layer is accumulated on top, the lower printing material has already cooled and solidified, ensuring the stability between layers, thereby ensuring the dimensional accuracy and surface flatness of the finished product.

[0029] The height of the air guide assembly is higher than the lower end of the printhead to prevent the air guide assembly from contacting the filament extruded from the filament outlet at the lower end of the printhead. The air guide assembly includes an installation pipe 20, an air supply pipe 30, a lifting rod 40, a fixing component 50, and an air guide plate 33. The installation pipe 20 is located at the bottom of the mounting base 10 and is connected to the air outlet. The air supply pipe 30 is connected to the installation pipe 20. The filament outlet of the printhead is located in the middle of the air supply pipe 30. Two air outlets 31 are opened on the bottom surface of the air supply pipe 30. Air passes through the installation pipe 20, enters the air supply pipe 30, and is discharged from the air outlets 31. Two fixing seats 32 are symmetrically arranged on the bottom surface of the air supply pipe 30. The fixing seats 32 are located on the side of the corresponding air outlet 31 away from the middle of the air supply pipe 30. A hinge shaft is rotatably mounted on the fixing seat 32. The air guide plate 33 is connected to the hinge shaft. A fixing shaft 34 is arranged on the side of the air guide plate 33 away from the fixing seat 32. The fixing shaft 34 is parallel to the hinge shaft. A lifting rod 40 is vertically slidably mounted on the air supply duct 30, and a fixing component 50 is mounted on the air supply duct 30 to fix the lifting rod 40. A lifting plate 41 is horizontally mounted at the lower end of the lifting rod 40. The lifting plate 41 has two strip holes 42, the length of which is consistent with the length of the lifting plate 41. A fixing shaft 34 is slidably connected to the corresponding strip hole 42. The sliding lifting rod 40 drives the lifting plate 41 to rise and fall. When the lifting plate 41 rises and falls, the fixing shaft 34 slides within the strip hole 42, thereby causing the air guide plate 33 to rotate to adjust its angle, thus changing the airflow intensity at the filament outlet and ensuring the best effect during model cooling and molding. Furthermore, the dual-sided airflow avoids the situation where, under strong airflow conditions, the material filament that has not been fully cooled and hardened is blown to the other side, causing errors in model dimensions. The air supply duct 30 is generally U-shaped, with two air outlets symmetrically arranged on the bottom surface of the air supply duct 30, and the filament outlet of the print head is located in the middle of the air supply duct 30.

[0030] When the air guide plate 33 is tilted downwards at a large angle, the air discharged from the air outlet 61 is more dispersed, resulting in lower airflow intensity at the filament outlet and poorer heat dissipation. When the air guide plate 33 is tilted downwards at a smaller angle, the air discharged from the air outlet 61 is more concentrated, resulting in higher airflow intensity at the filament outlet and better heat dissipation. This is to accommodate filaments of different materials and temperatures.

[0031] Specifically, the bottom surface of the air duct 30 has symmetrical openings 35. On both sides of the opening 35, there are protrusions 36 on the bottom surface of the air duct 30. Each protrusion 36 has a groove 37, and a baffle plate 38 is slidably mounted within both grooves 37. Air inside the air duct 30 can be discharged through the air outlet 31 and the opening 35. By sliding the baffle plate 38, the degree of obstruction of the opening 35 can be adjusted, thereby regulating the exhaust volume of the opening 35 and consequently, the exhaust volume of the air outlet 31. The top surface of the baffle plate 38 slides in contact with the bottom surface of the air duct 30, ensuring effective obstruction of the opening 35.

[0032] During installation, the mounting pipe 20 includes a first L-shaped pipe 21 and two second L-shaped pipes 22 connected thereto. An air outlet is located at the bottom of the mounting base 10 and communicates with the cavity 11. The vertical section of the first L-shaped pipe 21 is connected to the air outlet, and the horizontal section of the second L-shaped pipe 22 communicates with the first L-shaped pipe 21, while its vertical section communicates with the air supply pipe 30. Two air inlets are symmetrically located on the top surface of the air supply pipe 30 and are connected to the vertical sections of the second L-shaped pipes 22. Airflow enters the air supply pipe 30 through the two air inlets, ensuring uniform airflow within the pipe. A U-shaped plate 60 is installed inside the air supply pipe 30, with several through holes 61. Air discharged from the second L-shaped pipes 22 is blocked by the U-shaped plate 60 and flows out through the several air outlets 61, ensuring uniform airflow from the air outlets 31 and 35.

[0033] In a specific configuration, the fixing component 50 includes a connecting seat 51 disposed on the side wall of the air duct 30. The connecting seat 51 has a vertically opened sliding hole, and the lifting rod 40 is slidably connected to the sliding hole. The connecting seat 51 has a horizontally opened threaded hole, which communicates with the sliding hole. A threaded rod 52 is spirally disposed in the threaded hole. A handle 53 is disposed at the end of the threaded rod 52 away from the lifting rod 40. Rotating the handle 53 drives the threaded rod 52 to rotate. When the end of the threaded rod 52 abuts against the lifting rod 40, the positions of the lifting rod 40, the lifting plate 41, and the fixing shaft 34 are fixed, thereby fixing the position of the air guide plate 33.

[0034] The operating principle of the 3D printer cooling device in this embodiment is as follows: The lifting plate 41 is raised and lowered by the sliding lifting rod 40. When the lifting plate 41 rises and falls, the fixed shaft 34 slides within the slotted hole 42, causing the air guide plate 33 to rotate to adjust its angle. Then, the handle 53 is rotated to rotate the threaded rod 52, causing the end of the threaded rod 52 to contact the lifting rod 40, thus fixing the lifting rod 40 and the air guide plate 33. The cooling fan 12 is activated to deliver outside air into the cavity 11. The air passes through the installation pipe 20 and reaches the air supply pipe 30 before being discharged from the air outlet 31. Guided by the air guide plate 33, the air is blown towards the filament outlet, cooling the filament extruded from the outlet.

[0035] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A cooling device for a 3D printer, characterized in that: The device includes a mounting base (10) installed on the print head. The mounting base (10) has a cavity (11) inside. The mounting base (10) has an installation port on one side that communicates with the cavity (11). A cooling fan (12) is installed in the installation port. An air outlet is installed at the bottom of the mounting base (10) and communicates with the cavity (11). An air guide assembly is installed at the bottom of the mounting base (10) to guide and regulate the airflow discharged from the air outlet.

2. The cooling device for 3D printer according to claim 1, characterized in that: The height of the air guide assembly is higher than the lower end of the print head.

3. The cooling device for 3D printer according to claim 2, characterized in that: The air guide assembly includes an installation pipe (20) located at the bottom of the mounting base (10), the installation pipe (20) being connected to an air outlet, an air supply pipe (30) being connected to the installation pipe (20), two air outlets (31) being opened on the bottom surface of the air supply pipe (30), two fixed seats (32) being symmetrically arranged on the bottom surface of the air supply pipe (30), an air guide plate (33) being hinged on the fixed seat (32), a fixed shaft (34) being arranged on the side of the air guide plate (33) away from the fixed seat (32), a lifting rod (40) being vertically slidably arranged on the air supply pipe (30), a fixing assembly (50) being arranged on the air supply pipe (30) to fix the lifting rod (40), a lifting plate (41) being horizontally arranged at the lower end of the lifting rod (40), two strip holes (42) being opened on the lifting plate (41), and the fixed shaft (34) being slidably connected to the corresponding strip hole (42).

4. The cooling device for 3D printer according to claim 3, characterized in that: The fixing component (50) includes a connecting seat (51) disposed on the side wall of the air duct (30). The connecting seat (51) has a vertical sliding hole. The lifting rod (40) is slidably connected to the sliding hole. The connecting seat (51) has a horizontal threaded hole. The threaded hole communicates with the sliding hole. A threaded rod (52) is spirally disposed in the threaded hole. A handle (53) is disposed at the end of the threaded rod (52) away from the lifting rod (40).

5. The cooling device for 3D printer according to claim 3, characterized in that: The air supply pipe (30) is shaped like a square, and the two air outlets (31) are symmetrically arranged on the bottom surface of the air supply pipe (30). The filament outlet of the print head is located in the middle of the air supply pipe (30).

6. The cooling device for 3D printer according to claim 3, characterized in that: The installation pipe (20) includes a first L-shaped pipe (21) and two second L-shaped pipes (22) connected thereto. The vertical section of the first L-shaped pipe (21) is connected to the air outlet, and the horizontal section of the second L-shaped pipe (22) is connected to the first L-shaped pipe (21), and the vertical section is connected to the air supply pipe (30).

7. A 3D printer cooling device according to claim 3, characterized in that: The air duct (30) has two air inlets symmetrically opened on its top surface, and the air inlets are connected to the vertical section of the second L-shaped pipe (22).

8. A 3D printer cooling device according to claim 7, characterized in that: The bottom surface of the air duct (30) is symmetrically provided with an opening (35). The bottom surface of the air duct (30) is provided with protrusions (36) on both sides of the opening (35). The protrusions (36) are provided with sliding grooves (37). A baffle plate (38) is slidably provided in the two sliding grooves (37).

9. A 3D printer cooling device according to claim 8, characterized in that: The top surface of the baffle plate (38) slides in contact with the bottom surface of the air supply pipe (30).

10. A 3D printer cooling device according to claim 3, characterized in that: The air duct (30) is provided with a U-shaped plate (60), and the U-shaped plate (60) has several through holes (61).

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