Integrated high-temperature 3D printing head

Abstract

The utility model relates to the technical field of 3D printing, in particular to an integrated high-temperature 3D printing head which comprises a base, a feeding unit and a spray head are arranged on the base, a guide assembly is arranged on the base, a shell is mounted on the base, a mounting plate is fixedly arranged on one side of the base, a circuit board is arranged on the mounting plate, and the circuit board is arranged on the mounting plate. A heating device matched with the spray head is arranged on the shell, a heat dissipation structure is arranged between the shell and the base, the spray head is subjected to auxiliary heating through the heating device, heating is conducted on the basis of a ceramic heating ring, the temperature of the spray head is increased rapidly, the preheating time is shortened, and therefore the working efficiency is improved; and by arranging a heat dissipation structure, the situation that the temperature of the printing head is too high when the spraying head and the heating device conduct heating, and consequently the aging speed of internal electronic elements is increased is prevented, and the service life of the printing head is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to an integrated high-temperature 3D printing head. Background Technology

[0002] 3D printing (3DP), also known as additive manufacturing technology, is a technology that manufactures solid parts by adding materials layer by layer based on three-dimensional CAD data. From its early rapid prototyping technology to its current widespread application, 3D printing technology is used in design and manufacturing fields such as jewelry design, footwear design and manufacturing, industrial design, architectural design, engineering design and construction, and automobile design and manufacturing, as well as in medical fields such as aerospace and dentistry. The general process is as follows: First, a required three-dimensional model is designed using computer-aided modeling software (such as CAD software). Then, the model is processed using slicing software. The 3D printer will select a forming method from various forming principles and print the raw material layer by layer according to these working paths. When the two-dimensional sheets are stacked together, the designed three-dimensional model is formed. Finally, after the printed model is removed, post-processing is required, which generally includes two steps: cleaning and curing.

[0003] When a 3D printer is working, the printer's print head needs to melt the input raw material and spray it onto a designated area. The 3D structure is formed by accumulating multiple layers of material. Currently, the nozzle of the 3D print head is equipped with a heating cup to heat and melt the raw material. For example, Chinese Patent Publication No. CN219748937U discloses a "3D printer print head" that uses a ceramic heating ring for heating. The heating process is uniform, stable, and easy to control. A wire harness fixing component is used to fix the wire harness in the print head to avoid unnecessary damage.

[0004] However, in actual use, as the consumables are continuously fed into the throat, the molten consumables are squeezed out of the nozzle. When the ceramic heating ring is heated, the heating speed is relatively slow, and the machine needs to be preheated in advance. If the temperature does not meet the requirements, the melting speed of the consumables will be less than the feeding speed, and the sprayed consumables will not be completely melted, resulting in phenomena such as stringing and weak adhesion, which increases the defect rate. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the relatively slow heating speed of ceramic heating rings, which easily leads to the melting speed of consumables being less than the feeding speed, resulting in incomplete melting of the ejected consumables, causing phenomena such as stringing and weak adhesion, and increasing the defect rate. Therefore, an integrated high-temperature 3D printing head is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design an integrated high-temperature 3D printing head, including a base, a feeding unit and a nozzle on the base, a guide assembly on the base, a housing mounted on the base, a mounting plate fixedly mounted on one side of the base, a circuit board on the mounting plate, a heating device that cooperates with the nozzle on the housing, and a heat dissipation structure between the housing and the base.

[0008] Furthermore, the feeding unit is provided with a guide hole, which penetrates the base and is connected to the nozzle.

[0009] Furthermore, the heat dissipation structure includes a cooling fan, and the outer casing has an air inlet that cooperates with the cooling fan.

[0010] Furthermore, the outer casing is provided with an air guiding channel, which is located outside the heating device.

[0011] Furthermore, the upper end of the channel is provided with an air inlet that cooperates with the cooling fan, and the lower end of the channel is provided with an exhaust port.

[0012] Furthermore, the channel is provided with a foolproof groove, and the cooling fan is fixedly provided with a foolproof component.

[0013] Furthermore, the guide assembly includes a slider fixedly mounted on the base, and a guide block is provided at the lower end of the base, with guide grooves provided on each guide block.

[0014] The integrated high-temperature 3D printing head proposed in this utility model has the following advantages:

[0015] In this invention, a heating device is set up to assist in heating the nozzle. Heating is carried out on the basis of the ceramic heating ring, which enables the nozzle to heat up quickly, reduces the preheating time, thereby improving work efficiency and increasing the melting efficiency of consumables by increasing the nozzle temperature.

[0016] Secondly, in this invention, a heat dissipation structure is provided to prevent the printhead from overheating during heating, which would accelerate the aging of internal electronic components and increase the lifespan of the printhead. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an integrated high-temperature 3D printing head proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the outer shell of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the base of this utility model;

[0020] Figure 4 This is a schematic diagram of the channel structure of this utility model.

[0021] In the diagram: 1. Base; 2. Feeding unit; 21. Feed guide hole; 3. Nozzle; 4. Guide assembly; 41. Slider; 42. Guide block; 5. Housing; 51. Air inlet; 6. Mounting plate; 7. Circuit board; 8. Heating device; 9. Heat dissipation structure; 91. Cooling fan; 92. Channel; 93. Exhaust vent; 94. Foolproof component. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 An integrated high-temperature 3D printing head includes a base 1, a feeding unit 2 and a nozzle 3 on the base 1, a ceramic heating ring on the nozzle 3, a guide assembly 4 on the base 1, a housing 5 mounted on the base 1, a mounting plate 6 fixedly mounted on one side of the base 1, a circuit board 7 mounted on the mounting plate 6, a heating device 8 that cooperates with the nozzle 3 on the housing 5, and a heat dissipation structure 9 between the housing 5 and the base 1.

[0024] In this invention, the printhead 3 is assisted in heating by the heating device 8, which heats the printhead 3 on the basis of the ceramic heating ring, so that the printhead 3 heats up quickly, reduces the preheating time, thereby improving work efficiency and increasing the melting efficiency of consumables by increasing the temperature of the printhead 3. The heat dissipation structure 9 is set to prevent the printhead 3 and the heating device 8 from causing the printhead temperature to be too high during heating, which would accelerate the aging of internal electronic components and increase the service life of the printhead.

[0025] Furthermore, in this embodiment, the feeding unit 2 is provided with a guide hole 21, which penetrates the base 1 and is connected to the nozzle 3. The consumable enters the nozzle 3 along the guide hole 21. The feeding unit 2 applies a downward force to squeeze the molten consumable inside the nozzle. This is a prior art that has been disclosed and will not be described in detail here.

[0026] Furthermore, in this embodiment, the heat dissipation structure 9 includes a heat dissipation fan 91, and the outer casing 5 has an air inlet 51 that cooperates with the heat dissipation fan 91. The heat dissipation fan 91 draws in outside air and blows it into the print head to cool the print head and prevent it from getting too hot.

[0027] It should be noted that in this embodiment, the outer shell 5 is provided with an air guiding channel 92. The channel 92 is located outside the heating device 8. The air blown out by the cooling fan 91 passes through the channel 92 to cool the channel 92, thereby reducing the temperature of the heating device 8 and preventing heat loss from increasing the internal temperature of the print head.

[0028] Furthermore, in this embodiment, the upper end of the channel 92 is provided with an air inlet that cooperates with the cooling fan 91, and the lower end of the channel 92 is provided with an exhaust port 93. The air and smoke blown out by the cooling fan 91 flows through the channel and is finally discharged downward in the direction of the exhaust port 93. The discharged air can blow towards the printed consumables, increasing the solidification speed of the consumables.

[0029] In detail, in this embodiment, a foolproof groove is provided on the channel 92, and a foolproof component 94 is fixedly provided on the cooling fan 91. By setting the foolproof groove and the foolproof component 94 together, the cooling fan 91 is prevented from being installed in reverse. At the same time, it can also help to fix the cooling fan 91 to prevent the cooling fan 91 from shaking, making it more secure and stable.

[0030] More specifically, in this embodiment, the guide component 4 includes a slider 41 fixedly mounted on the base 1, and a guide block 42 is provided at the lower end of the base 1. Each guide block 42 has a guide groove. The slider 41 is configured to cooperate with the slide rail of the printer chassis to form a sliding connection, which facilitates the movement of the print head. At the same time, the guide block 42 is configured to cooperate with the slide rail to limit the movement trajectory of the print head. That is, a guide rail that is inserted into the guide groove is fixedly mounted on the slide rail to prevent the print head from shaking when it moves.

[0031] Working method: During operation, the heating device 8 provides auxiliary heating to the printhead 3, which is heated on the basis of the ceramic heating ring, so that the printhead 3 can heat up quickly and reduce the preheating time. Outside air is drawn in through the cooling fan 91, and the air blown out by the cooling fan 91 passes through the channel 92 to cool the channel 92, thereby reducing the temperature of the heating device 8 and preventing heat loss from increasing the internal temperature of the printhead. The exhaust air can be blown towards the printed consumables to increase the solidification speed of the printed consumables.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integrated high-temperature 3D printing head, comprising a base (1), characterized in that, The base (1) is provided with a feeding unit (2) and a nozzle (3). The base (1) is provided with a guide assembly (4). The base (1) is installed with a housing (5). A mounting plate (6) is fixedly provided on one side of the base (1). A circuit board (7) is provided on the mounting plate (6). A heating device (8) that cooperates with the nozzle (3) is provided on the housing (5). A heat dissipation structure (9) is provided between the housing (5) and the base (1).

2. The integrated high-temperature 3D printing head according to claim 1, characterized in that: The feeding unit (2) is provided with a guide hole (21), which passes through the base (1) and is connected to the nozzle (3).

3. The integrated high-temperature 3D printing head according to claim 1, characterized in that: The heat dissipation structure (9) includes a heat dissipation fan (91), and the outer casing (5) has an air inlet (51) that cooperates with the heat dissipation fan (91).

4. The integrated high-temperature 3D printing head according to claim 3, characterized in that: The outer casing (5) is provided with an air guiding channel (92), which is located outside the heating device (8).

5. An integrated high-temperature 3D printing head according to claim 4, characterized in that: The upper end of the channel (92) is provided with an air inlet that cooperates with the cooling fan (91), and the lower end of the channel (92) is provided with an exhaust port (93).

6. The integrated high-temperature 3D printing head according to claim 5, characterized in that: The channel (92) is provided with a foolproof groove, and the cooling fan (91) is fixedly provided with a foolproof component (94).

7. The integrated high-temperature 3D printing head according to claim 1, characterized in that: The guide assembly (4) includes a slider (41) fixedly mounted on the base (1), and a guide block (42) is provided at the lower end of the base (1). Each guide block (42) has a guide groove.

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