A cooling mechanism for a 3D printer nozzle

Abstract

The utility model belongs to printing device technical field discloses a cooling mechanism for 3D printer nozzle, including the nozzle body and be used for fixing the mounting bracket of nozzle body, the mounting bracket is fixedly connected with the track board that is annularly arranged, the track board is slidably connected with the first movable block and two second movable blocks that can slide along the track board circumference, the first movable block is rotatably connected with the drive link, and the first movable block is fixedly connected with the motor for driving the drive link rotation, the first movable block is provided with cooling assembly and rotating component, the utility model passes through single motor drive double motion system, and the fan rotation heat dissipation and the revolution motion around the nozzle are realized simultaneously, the fan is in the rotation and produces forced air current, and the fan rotates along the nozzle circumference even speed, makes the dynamic coverage nozzle full surface of heat dissipation area, eliminates the axial heat dissipation dead angle caused by traditional fixed fan completely, improves the heat dissipation effect greatly.

Description

Technical Field

[0001] This utility model relates to the field of printing device technology, and more specifically, to a cooling mechanism for a 3D printer nozzle. Background Technology

[0002] In the 3D printing process, the molten material extruded by the nozzle of a 3D printer at high temperature needs to be rapidly solidified by forced cooling in order to maintain the molding accuracy. At present, the industry generally adopts a fixed fan cooling device, that is, a stationary fan is installed around the heat dissipation fins at the hot end of the nozzle, and the heat is removed by directional airflow to achieve temperature control.

[0003] However, in actual operation, we found that the airflow coverage of the fixed fan was always limited. Specifically, since the fan could only cool the fixed position of the heat sink fins, a cooling dead zone appeared in the circumference of the printhead, causing defects such as material collapse and stringing, which greatly affected the printing quality.

[0004] In view of this, we propose a cooling mechanism for 3D printer nozzles. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this invention is to provide a cooling mechanism for 3D printer nozzles, in order to solve the problem mentioned in the background art that traditional cooling mechanisms for 3D printer nozzles have cooling dead zones during cooling and heat dissipation, which affects print quality.

[0007] 2. Technical Solution

[0008] A cooling mechanism for a 3D printer nozzle includes a nozzle body and a mounting bracket for fixing the nozzle body. A ring-shaped track plate is fixedly connected to the mounting bracket. A first movable block and two second movable blocks that can slide along the circumference of the track plate are slidably connected to the track plate. A drive rod is rotatably connected to the first movable block, and a motor for driving the drive rod to rotate is fixedly connected to the first movable block. A cooling component and a rotating component are provided on the first movable block.

[0009] Cooling components are used to cool the nozzle body.

[0010] The rotating component is used to drive the cooling component to rotate around the nozzle body to improve heat dissipation.

[0011] Preferably, the cooling assembly includes two fans respectively fixedly connected to the two second movable blocks and rotating rods fixedly connected to the rotating shafts of the fans. Pulleys are fixedly connected to both ends of the drive rod and to the two rotating rods. The two pulleys at both ends of the drive rod are respectively connected to the pulleys on the two rotating rods through two transmission belts, so that the motor can drive the two fans to rotate simultaneously when it starts.

[0012] Preferably, a connecting plate is fixedly connected to both sides of the first movable block, and the two connecting plates are respectively fixedly connected to the two second movable blocks.

[0013] Preferably, the rotating assembly includes a follower rod rotatably connected to the first movable block and a drive gear fixedly connected to the bottom of the follower rod. A toothed ring that meshes with the drive gear is fixedly connected to the track plate, so that when the drive gear rotates, it can drive the first movable block to rotate circumferentially along the nozzle body.

[0014] Preferably, the bottom of both the first movable block and the second movable block are fixedly connected to sliders, the cross-section of the sliders is T-shaped, and the top of the track plate is provided with an annular groove that matches the size of the sliders.

[0015] Preferably, a first bevel gear is fixedly connected to the output end of the motor, and a second bevel gear that meshes with the first bevel gear is fixedly connected to the drive rod, so that the motor can drive the drive rod to rotate when it starts.

[0016] Preferably, a third bevel gear is fixedly connected to the drive rod, and a fourth bevel gear is fixedly connected to the top of the follower rod. The third bevel gear and the fourth bevel gear mesh with each other, so that the follower rod can be driven to rotate when the motor starts.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] 1. This utility model uses a single motor to drive a dual motion system, which simultaneously realizes the fan's self-rotation for heat dissipation and its revolution around the nozzle. While the fan generates forced airflow by rotating on its own, it rotates at a uniform speed along the circumference of the nozzle, so that the heat dissipation area dynamically covers the entire surface of the nozzle, completely eliminating the axial heat dissipation dead angle caused by traditional fixed fans, and greatly improving the heat dissipation effect.

[0020] 2. The output shaft of the motor of this utility model drives the transverse drive rod through the first and second bevel gears. The two ends of the drive rod drive the double fans to rotate synchronously through the belt. At the same time, the drive rod drives the follower rod and the bottom drive gear through the third and fourth bevel gears. The gears mesh with the tooth ring of the track plate to achieve revolution, so that a single power source drives two actions, reducing the input of power resources. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a diagram showing the connection relationship between the track plate and the first movable block of this utility model;

[0023] Figure 3 This is a cross-sectional schematic diagram of the track slab of this utility model;

[0024] Figure 4 This is a diagram showing the connection relationship between the drive rod and the follower rod of this utility model.

[0025] The following are the labeling details in the diagram: 1. Nozzle body; 12. Mounting bracket; 13. Track plate; 14. First movable block; 15. Second movable block; 16. Slider; 17. Slide groove; 18. Motor; 19. Drive rod; 111. Connecting plate; 112. First bevel gear; 113. Second bevel gear; 2. Cooling assembly; 21. Fan; 22. Rotating rod; 23. Pulley; 24. Transmission belt; 3. Rotating assembly; 31. Follower rod; 32. Third bevel gear; 33. Fourth bevel gear; 35. Drive gear; 36. Toothed ring. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Please see Figure 1-4 This utility model provides a technical solution:

[0030] A cooling mechanism for a 3D printer nozzle includes a nozzle body 1 and a mounting bracket 12 for fixing the nozzle body 1. A ring-shaped track plate 13 is fixedly connected to the mounting bracket 12. A first movable block 14 and two second movable blocks 15 that can slide along the circumference of the track plate 13 are slidably connected to the track plate 13. A drive rod 19 is rotatably connected to the first movable block 14, and a motor 18 for driving the drive rod 19 to rotate is fixedly connected to the first movable block 14. A cooling component 2 and a rotating component 3 are provided on the first movable block 14. The cooling component 2 is used to cool the nozzle body 1. The rotating component 3 is used to drive the cooling component 2 to rotate along the circumference of the nozzle body 1 to improve the heat dissipation effect. This arrangement provides a precise guide path for the circumferential movement of the fan 21 through the ring track, ensuring that the heat dissipation trajectory strictly surrounds the nozzle body 1.

[0031] Specifically, the cooling assembly 2 includes two fans 21 fixedly connected to two second movable blocks 15 and rotating rods 22 fixedly connected to the shafts of the fans 21. Pulleys 23 are fixedly connected to both ends of the drive rod 19 and the two rotating rods 22. The two pulleys 23 at both ends of the drive rod 19 are connected to the pulleys 23 on the two rotating rods 22 via two transmission belts 24, so that when the motor 18 starts, it can drive the two fans 21 to rotate simultaneously. This configuration enables a single motor 18 to drive the dual fans 21 for heat dissipation, which not only reduces the investment of power resources, but also improves the heat dissipation effect through the configuration of two fans 21, further improving the reliability in high-temperature environments.

[0032] The first movable block 14 has connecting plates 111 fixedly connected to both sides, and the two connecting plates 111 are fixedly connected to the two second movable blocks 15 respectively. This arrangement can ensure the stability of the structure, so that the two fans 21 can cool the nozzle body 1 along the circumference of the track plate 13 with the first movable block 14.

[0033] In addition, the rotating assembly 3 includes a follower rod 31 rotatably connected to the first movable block 14 and a drive gear 35 fixedly connected to the bottom of the follower rod 31. A toothed ring 36 that meshes with the drive gear 35 is fixedly connected to the track plate 13, so that when the drive gear 35 rotates, it can drive the first movable block 14 to rotate circumferentially along the nozzle body 1. This arrangement allows the follower rod 31 to drive the first movable block 14 to move by rotating.

[0034] Secondly, the bottom of the first movable block 14 and the second movable block 15 are both fixedly connected to sliders 16. The cross-section of the slider 16 is T-shaped, and the top of the track plate 13 is provided with a ring-shaped groove 17 that matches the size of the slider 16. This arrangement ensures the stability and consistency of the first movable block 14 and the second movable block 15 during movement.

[0035] Furthermore, the output end of the motor 18 is fixedly connected to the first bevel gear 112, and the drive rod 19 is fixedly connected to the second bevel gear 113 that meshes with the first bevel gear 112, so that the motor 18 can drive the drive rod 19 to rotate when it starts. This arrangement can save installation space and make the installation of the components on the first movable block 14 more compact.

[0036] Furthermore, a third bevel gear 32 is fixedly connected to the drive rod 19, and a fourth bevel gear 33 is fixedly connected to the top of the follower rod 31. The third bevel gear 32 and the fourth bevel gear 33 mesh with each other, so that the motor 18 can drive the follower rod 31 to rotate when it starts. This arrangement allows the drive rod 19 to drive the two fans 21 to rotate synchronously and also drive the two fans 21 to rotate together along the nozzle body 1, which greatly reduces energy consumption.

[0037] Working principle:

[0038] When the motor 18 starts, its first bevel gear 112 at the output end drives the second bevel gear 113, which meshes with it, to rotate, causing the drive rod 19 to rotate synchronously. This rotational power is transmitted through a dual path:

[0039] Firstly, the pulleys 23 at both ends of the drive rod 19 are linked to the pulleys 23 on the shaft of the two fans 21, which force the two fans 21 to rotate at high speed to generate directional airflow that blows directly onto the surface of the nozzle body 1.

[0040] Secondly, the third bevel gear 32 in the middle section of the drive rod 19 meshes with the fourth bevel gear 33 at the top of the follower rod 31, driving the drive gear 35 at the bottom of the follower rod 31 to rotate. At this time, the drive gear 35 meshes with the fixed tooth ring 36 of the track plate 13. Under the push of the reaction force, the entire moving block assembly revolves along the circular track.

[0041] During this process, the airflow from the fan 21's rotation combines with the orbital trajectory around the nozzle, improving the heat dissipation effect. Meanwhile, the composite transmission mode driven by the single motor 18 improves stability while reducing the input of power resources.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cooling mechanism for a 3D printer nozzle, comprising a nozzle body (1) and a mounting bracket (12) for fixing the nozzle body (1), characterized in that: The mounting bracket (12) is fixedly connected to a ring-shaped track plate (13). The track plate (13) is slidably connected to a first movable block (14) and two second movable blocks (15) that can slide along the circumference of the track plate (13). The first movable block (14) is rotatably connected to a drive rod (19), and the first movable block (14) is fixedly connected to a motor (18) for driving the drive rod (19) to rotate. The first movable block (14) is provided with a cooling component (2) and a rotating component (3). Cooling assembly (2) is used to cool the nozzle body (1); Rotating component (3) is used to drive the cooling component (2) to rotate around the nozzle body (1) to improve heat dissipation.

2. The cooling mechanism for a 3D printer nozzle as described in claim 1, characterized in that: The cooling assembly (2) includes two fans (21) fixedly connected to the two second movable blocks (15) respectively and a rotating rod (22) fixedly connected to the rotating shaft of the fan (21). Both ends of the drive rod (19) and the two rotating rods (22) are fixedly connected to pulleys (23). The two pulleys (23) at both ends of the drive rod (19) are connected to the pulleys (23) on the two rotating rods (22) respectively through two transmission belts (24), so that when the motor (18) starts, it can drive the two fans (21) to rotate at the same time.

3. The cooling mechanism for a 3D printer nozzle as described in claim 1, characterized in that: Both sides of the first movable block (14) are fixedly connected to connecting plates (111), and the two connecting plates (111) are respectively fixedly connected to the two second movable blocks (15).

4. The cooling mechanism for a 3D printer nozzle as described in claim 1, characterized in that: The rotating assembly (3) includes a follower rod (31) rotatably connected to the first movable block (14) and a drive gear (35) fixedly connected to the bottom of the follower rod (31). A toothed ring (36) meshing with the drive gear (35) is fixedly connected to the track plate (13), so that when the drive gear (35) rotates, it can drive the first movable block (14) to rotate circumferentially along the nozzle body (1).

5. The cooling mechanism for a 3D printer nozzle as described in claim 4, characterized in that: The bottom of the first movable block (14) and the second movable block (15) are both fixedly connected to sliders (16). The cross section of the slider (16) is T-shaped, and the top of the track plate (13) is provided with a ring-shaped groove (17) that matches the size of the slider (16).

6. The cooling mechanism for a 3D printer nozzle as described in claim 1, characterized in that: The output end of the motor (18) is fixedly connected to a first bevel gear (112), and the drive rod (19) is fixedly connected to a second bevel gear (113) that meshes with the first bevel gear (112), so that the motor (18) can drive the drive rod (19) to rotate when it starts.

7. The cooling mechanism for a 3D printer nozzle as described in claim 4, characterized in that: A third bevel gear (32) is fixedly connected to the drive rod (19), and a fourth bevel gear (33) is fixedly connected to the top of the follower rod (31). The third bevel gear (32) and the fourth bevel gear (33) mesh with each other, so that the motor (18) can drive the follower rod (31) to rotate when it starts.

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