3D printing equipment with multi-nozzle structure

Abstract

The utility model discloses 3D printing equipment with a multi-nozzle structure, and relates to the technical field of 3D printing equipment. The printing equipment comprises a shell, a printing equipment body is arranged in the shell, a moving frame is arranged on the printing equipment body, and a driving mechanism is installed on the moving frame. When the other spray head assembly needs to be started to work, after the driving mechanism is started, the two connecting frames move upwards and downwards respectively to drive the spray head assemblies installed on the two connecting frames to move reversely, vertical staggered switching movement of the two spray head assemblies is achieved, and then the started spray head assembly moves to a printing station to conduct printing work. Therefore, the risk that when traditional double-nozzle equipment is switched, the bottoms of the two nozzles are located on the same horizontal plane, and a formed printed product is scratched is avoided, it is ensured that the non-working nozzle assembly is always higher than the printing plane, and the problem that when the traditional double-nozzle equipment is switched, a formed part is likely to be scratched is effectively solved.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing equipment technology, and specifically relates to a 3D printing equipment with a multi-nozzle structure. Background Technology

[0002] In recent years, 3D printing technology has been widely used in aerospace, medical, and automotive manufacturing fields due to its advantages of rapid prototyping and high customization. Multi-nozzle 3D printing equipment, which can use multiple materials simultaneously, significantly improves printing efficiency and the functionality and aesthetics of products, and has gradually become a research hotspot in the industry. This equipment can achieve the combination printing of materials with different colors, mechanical properties, and thermal properties to meet the diverse performance requirements of complex products.

[0003] Common dual-nozzle 3D printing equipment on the market typically sets the bottoms of both nozzles on the same horizontal plane. During actual printing, when switching nozzles to print different materials, the non-working nozzle is prone to contacting the top of the printed product during movement. Since the top of the printed product is relatively fragile and the nozzle moves at a high speed, contact can damage the printed product. The air entering the cooling fan is usually drawn directly from the environment where the equipment is located without effective filtration. This causes dust, hair, fibers, and other impurities carried in the air to be blown onto the printed model by the fan airflow. During the printing process, the surface of the uncured printing material is highly viscous and easily attracts these impurities. Once these impurities adhere to the surface of the uncured model, they will not only damage the smoothness and gloss of the model surface but also affect the appearance quality.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a 3D printing device with a multi-nozzle structure to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a multi-nozzle 3D printing device, comprising a housing, inside which is a printing device body. A movable frame is mounted on the printing device body, and a drive mechanism is installed on the movable frame. A movable mechanism is mounted at one end of the drive mechanism, and connecting frames are mounted at both ends of the movable mechanism. Two connecting frames are slidably mounted to the movable frame. Nozzle assemblies are mounted on each of the two connecting frames, and model heat dissipation shells are mounted on each of the two connecting frames. A model heat dissipation fan is installed inside each model heat dissipation shell, and a mounting mechanism is mounted at one end of each model heat dissipation shell. A dust blocking mechanism is mounted on the mounting mechanism, and a filter screen is mounted on the dust blocking mechanism.

[0008] Furthermore, the drive mechanism includes a servo motor, which is fixedly mounted on the movable frame, and an output shaft is fixedly mounted on the output end of the servo motor.

[0009] Furthermore, the moving mechanism includes two synchronous pulleys, one of which is fixedly mounted on the output shaft, and the other synchronous pulley is rotatably mounted on the moving frame.

[0010] Furthermore, a timing belt meshes between the two timing pulleys, and the two connecting brackets are respectively fixed to both ends of the timing belt.

[0011] Furthermore, the bottom of the model heat dissipation housing is connected to an air duct, and the model heat dissipation housing is mounted on the connecting frame by multiple screws.

[0012] Furthermore, the mounting mechanism includes a mounting plate, which is mounted on the model heat dissipation housing by a plurality of screws, and a mounting block is fixedly mounted on one end of the mounting plate.

[0013] Furthermore, the mounting block has a placement groove inside, and a first magnetic suction element is installed in the placement groove.

[0014] Furthermore, the dust blocking mechanism includes a filter frame, the filter screen is fixedly installed on the filter frame, and a second magnetic suction element is fixedly installed at one end of the filter frame.

[0015] This utility model has the following beneficial effects:

[0016] When switching nozzle assemblies to use different materials during 3D printing, the drive mechanism on the moving frame starts operating. The drive mechanism drives the moving frame to rotate, and the rotation of the moving frame causes the connecting frames connected to its two ends to move in opposite directions. The two connecting frames are slidably installed with the moving frame, and the moving frame provides guidance for the movement of the connecting frames, ensuring that they move along a predetermined trajectory. When one nozzle assembly is in the printing station and another nozzle assembly needs to be activated, the drive mechanism starts, and the two connecting frames move up and down respectively, driving the nozzle assemblies installed on them to move in opposite directions, realizing the staggered switching movement of the two nozzle assemblies. Subsequently, the activated nozzle assembly moves to the printing station to perform the printing work, thus avoiding the risk of scratching the already printed product when the bottoms of the two nozzles are on the same horizontal plane during switching in traditional dual-nozzle equipment. This ensures that the non-working nozzle assembly is always higher than the printing plane, effectively avoiding the problem of easily scratching the already printed part when switching in traditional dual-nozzle equipment.

[0017] This utility model's model cooling fan dissipates heat from the printed model through the model's heat dissipation shell, preventing the material from overheating and deforming. During heat dissipation, air enters after being filtered by a dust blocking mechanism and a filter screen. The filter screen intercepts dust, hair, and other impurities, preventing them from adhering to the uncured model surface and ensuring the quality of the model surface. When the filter screen needs to be replaced, it can be easily removed and replaced using the magnetic installation method of the mounting mechanism and the dust blocking mechanism, facilitating the maintenance of equipment operation.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the movable frame of this utility model;

[0022] Figure 3 This is a structural diagram of the moving mechanism of this utility model;

[0023] Figure 4 For the present utility model Figure 3 Enlarged view in section A;

[0024] Figure 5This is a schematic diagram of the connecting frame of this utility model;

[0025] Figure 6 This is an exploded view of the dust blocking mechanism and the filter screen of this utility model.

[0026] Figure 7 This is an overall structural diagram of the dust blocking mechanism of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Outer shell; 2. Printing equipment body; 3. Moving frame; 4. Drive mechanism; 401. Servo motor; 402. Output shaft; 5. Moving mechanism; 501. Synchronous pulley; 502. Synchronous belt; 6. Connecting frame; 7. Nozzle assembly; 8. Model heat dissipation shell; 801. Air duct; 9. Model cooling fan; 10. Mounting mechanism; 1001. Mounting plate; 1002. Mounting block; 1003. Placement slot; 1004. First magnetic suction component; 11. Dust blocking mechanism; 1101. Filter frame; 1103. Second magnetic suction component; 12. Filter screen. Detailed Implementation

[0029] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0031] Please see Figures 1-7As shown, this utility model is a 3D printing device with a multi-nozzle structure, including a shell 1, a printing device body 2 inside the shell 1, a movable frame 3 on the printing device body 2, a drive mechanism 4 mounted on the movable frame 3, a movable mechanism 5 mounted at one end of the drive mechanism 4, and connecting frames 6 mounted at both ends of the movable mechanism 5. The two connecting frames 6 are slidably mounted with the movable frame 3. Nozzle assemblies 7 are mounted on each of the two connecting frames 6, and model heat dissipation shells 8 are mounted on each of the two connecting frames 6. A model heat dissipation fan 9 is provided inside the model heat dissipation shell 8. An installation mechanism 10 is mounted at one end of the model heat dissipation shell 8, a dust blocking mechanism 11 is mounted on the installation mechanism 10, and a filter screen 12 is mounted on the dust blocking mechanism 11.

[0032] The movement of the movable frame 3 is controlled by the drive source of the X-axis, Y-axis and Z-axis in the printing device body 2 inside the outer shell 1 to realize the printing movement operation. This is existing technology and is not considered an innovation point in this solution, but only to help to better understand this solution.

[0033] When it is necessary to switch nozzle assembly 7 to use different materials during the 3D printing process, the drive mechanism 4 on the moving frame 3 starts to operate. The drive mechanism 4 drives the moving mechanism 5 to rotate. The rotation of the moving mechanism 5 causes the connecting frames 6 connected to its two ends to move in opposite directions. The two connecting frames 6 are slidably installed with the moving frame 3. The moving frame 3 provides guidance for the movement of the connecting frames 6, ensuring that they move along a predetermined trajectory. When one nozzle assembly 7 is in the printing station and another nozzle assembly 7 needs to be activated, after the drive mechanism 4 is activated, the two connecting frames 6 move up and down respectively, driving the nozzle assemblies 7 installed on them to move in opposite directions, realizing the staggered switching movement of the two nozzle assemblies 7. Then, the activated nozzle assembly 7 moves to the printing station to perform the printing work, thereby avoiding the risk of scratching the already printed product when the bottoms of the two nozzles are on the same horizontal plane during the switching of traditional dual-nozzle equipment. It ensures that the non-working nozzle assembly 7 is always higher than the printing plane, effectively avoiding the problem of easily scratching the already printed part when switching of traditional dual-nozzle equipment.

[0034] During the printing process, the nozzle assembly 7 extrudes the hot melt material and deposits it layer by layer to build the object according to the instructions. At the same time, the model cooling fan 9 dissipates heat from the printed model through the model cooling shell 8 to prevent the material from overheating and deforming. During heat dissipation, the air enters after being filtered by the dust blocking mechanism 11 and the filter screen 12. The filter screen 12 intercepts dust, hair and other impurities, preventing them from adhering to the uncured model surface and ensuring the surface quality of the model. When the filter screen 12 needs to be replaced, it can be easily removed and replaced using the magnetic installation method of the mounting mechanism 10 and the dust blocking mechanism 11, which facilitates the maintenance of the equipment operation.

[0035] In one embodiment, the drive mechanism 4 includes a servo motor 401, which is fixedly mounted on the moving frame 3, and an output shaft 402 is fixedly mounted on the output end of the servo motor 401.

[0036] The moving mechanism 5 includes two synchronous wheels 501. One of the synchronous wheels 501 is fixedly mounted on the output shaft 402, and the other synchronous wheel 501 is rotatably mounted on the moving frame 3.

[0037] A timing belt 502 meshes between the two timing pulleys 501, and the two connecting brackets 6 are respectively fixed to both ends of the timing belt 502.

[0038] When the device needs to switch nozzle assembly 7, the servo motor 401 on the moving frame 3 starts after receiving a command from the control system. The output shaft 402 rotates following the output end of the servo motor 401, driving the synchronous pulley 501 fixed on it to rotate. Since this synchronous pulley 501 meshes with another synchronous pulley 501 mounted on the moving frame 3 through a synchronous belt 502, the rotation of the synchronous pulley 501 on the output shaft 402 will drive the synchronous belt 502 to run in a cycle. Because the two connecting frames 6 are respectively fixed at both ends of the synchronous belt 502, the movement of the synchronous belt 502 will drive the two connecting frames 6 to move in opposite directions along the guide rail of the moving frame 3. Specifically, when the timing belt 502 cycles clockwise, one end of the connecting frame 6 moves upward and the other end moves downward; conversely, when the timing belt 502 cycles counterclockwise, the connecting frame 6 moves in the opposite direction. This allows the two printhead assemblies 7 mounted on the connecting frame 6 to move alternately up and down, thus avoiding the risk of scratching the printed product when the bottoms of the two printheads are on the same horizontal plane during switching in traditional dual-printhead equipment. This ensures that the non-working printhead assembly 7 is always higher than the printing plane, effectively avoiding the problem of easily scratching the printed part when switching in traditional dual-printhead equipment.

[0039] In one embodiment, for the above-mentioned model heat dissipation housing 8, the bottom of the model heat dissipation housing 8 is connected to an air duct 801, and the model heat dissipation housing 8 is installed on the connecting frame 6 by multiple screws.

[0040] The mounting mechanism 10 includes a mounting plate 1001, which is mounted on the model heat dissipation housing 8 by a plurality of screws, and a mounting block 1002 is fixedly mounted on one end of the mounting plate 1001.

[0041] The mounting block 1002 has a placement groove 1003 inside, and a first magnetic suction element 1004 is installed in the placement groove 1003.

[0042] The dust blocking mechanism 11 includes a filter frame 1101, the filter screen 12 is fixedly installed on the filter frame 1101, and a second magnetic suction member 1103 is fixedly installed at one end of the filter frame 1101.

[0043] When the model cooling fan 9 is started, the generated airflow is directed towards the printing area through the air duct 801 connected to the bottom of the model cooling housing 8, accelerating the solidification process of the molten material. Since the model cooling housing 8 is fixed to the connecting frame 6 by multiple screws, it moves synchronously with the nozzle assembly 7 to ensure that the airflow is always aligned with the printing area. Before the airflow enters the model cooling housing 8, it must first pass through the filter screen 12. The mounting plate 1001 is fixed to the model cooling housing 8 by screws, and the first magnetic attractor 1004 is embedded in the placement groove 1003 of the mounting block 1002 at its end, while the filter frame 1101 is equipped with a second magnetic attractor with the opposite polarity to the first magnetic attractor 1004. When the filter frame 1101 approaches the mounting block 1002, the attraction between the first magnetic suction member 1004 and the second magnetic suction member 1103 causes them to fit tightly together. The filter screen 12 on the filter frame 1101 intercepts dust, hair and other impurities, preventing them from being blown towards the printing model by the airflow. When it is necessary to clean or replace the filter screen 12, simply apply the magnetic force that overcomes the magnetic attraction between the first magnetic suction member 1004 and the second magnetic suction member 1103 to quickly separate the filter frame 1101 from the mounting block 1002. Then, a new filter screen 12 can be installed on the mounting block 1002, or a cleaned filter screen 12 can be installed on the mounting block 1002 without the need for tools.

[0044] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A 3D printing device with a multi-nozzle structure, comprising a housing (1), wherein a printing device body (2) is disposed inside the housing (1), and a movable frame (3) is disposed on the printing device body (2), characterized in that: A drive mechanism (4) is installed on the moving frame (3). A moving mechanism (5) is installed at one end of the drive mechanism (4). A connecting frame (6) is installed at both ends of the moving mechanism (5). The two connecting frames (6) are slidably installed with the moving frame (3). A nozzle assembly (7) is installed on each of the two connecting frames (6). A model heat dissipation shell (8) is installed on each of the two connecting frames (6). A model heat dissipation fan (9) is provided inside the model heat dissipation shell (8). An installation mechanism (10) is installed at one end of the model heat dissipation shell (8). A dust blocking mechanism (11) is installed on the installation mechanism (10). A filter screen (12) is installed on the dust blocking mechanism (11).

2. The 3D printing equipment with a multi-nozzle structure according to claim 1, characterized in that, The drive mechanism (4) includes a servo motor (401), which is fixedly mounted on the moving frame (3), and an output shaft (402) is fixedly mounted on the output end of the servo motor (401).

3. The 3D printing equipment with a multi-nozzle structure according to claim 2, characterized in that, The moving mechanism (5) includes two synchronous wheels (501), one of which is fixedly mounted on the output shaft (402), and the other synchronous wheel (501) is rotatably mounted on the moving frame (3).

4. The 3D printing equipment with a multi-nozzle structure according to claim 3, characterized in that, A timing belt (502) meshes between the two timing pulleys (501), and the two connecting brackets (6) are respectively fixed to both ends of the timing belt (502).

5. The 3D printing equipment with a multi-nozzle structure according to claim 1, characterized in that, The bottom of the model heat dissipation shell (8) is connected to an air duct (801), and the model heat dissipation shell (8) is installed on the connecting frame (6) by multiple screws.

6. The 3D printing equipment with a multi-nozzle structure according to claim 1, characterized in that, The mounting mechanism (10) includes a mounting plate (1001), which is mounted on the model heat sink housing (8) by a plurality of screws, and a mounting block (1002) is fixedly mounted on one end of the mounting plate (1001).

7. A 3D printing device with a multi-nozzle structure according to claim 6, characterized in that, The mounting block (1002) has a placement slot (1003) inside, and a first magnetic suction element (1004) is installed in the placement slot (1003).

8. A 3D printing device with a multi-nozzle structure according to claim 1, characterized in that, The dust blocking mechanism (11) includes a filter frame (1101), the filter screen (12) is fixedly installed on the filter frame (1101), and a second magnetic suction element (1103) is fixedly installed at one end of the filter frame (1101).

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