Printing nozzle structure for large 3D printer

Abstract

The utility model relates to the field of nozzle mounting and supporting for 3D printers, in particular to a printing nozzle structure for a large 3D printer, which comprises a mounting bearing part, an air cooling mounting assembly, a heating module, a wire feeding wheel assembly and a nozzle part, the mounting bearing part is mounted on an external driving mechanism; a wire feeding wheel assembly used for conveying printing wire materials is arranged on the installation bearing part. A heating module is arranged on the lower side of the wire feeding wheel assembly; the heating module is connected with the mounting bearing part; the installation position matched with the installation of the fan is designed on the printing spray head structure, through reasonable structural optimization layout, the printing spray head can meet the use requirement during printing, and the situation that a printed product is deformed, softened and deformed and blocks a feeding port is avoided.

Description

Technical Field

[0001] This utility model relates to the field of nozzle mounting support for 3D printers, and in particular to a nozzle structure for a large 3D printer. Background Technology

[0002] The entire 3D printing process involves melting plastic inside the nozzle and then depositing plastic fibers to form a thin layer. Large-scale high-speed 3D printers are used to print large-sized 3D products. In actual use, the printer nozzle is mounted on a nozzle mounting frame, which is adjusted in space by an external drive mechanism to perform the printing operation. Existing large-scale high-speed 3D printers have relatively high print flow rates, and in practical applications, the following problems exist:

[0003] 1. The molten printing material flowing out from the nozzle cannot be cooled and solidified quickly after being ejected, resulting in insufficient hardening of the printed product structure and deformation; this greatly affects the normal printing operation of large high-speed 3D printers.

[0004] 2. The temperature of the heating module of the nozzle consumable is not easy to control. If the temperature is too high, the filament will soften near the feed hole of the heating module, causing the feed port to be blocked and affecting the use. Utility Model Content

[0005] The purpose of this utility model is to provide a printing nozzle structure for a large 3D printer. Its overall structure is scientifically designed, and the printing nozzle structure is designed with an installation position adapted to the fan. Through reasonable structural optimization, the printing nozzle can meet the usage requirements during printing and avoid deformation, softening, and clogging of the feed port in the printed product.

[0006] To achieve the above design objectives, this utility model adopts the following technical solution:

[0007] A printhead structure for a large 3D printer includes a mounting support, an air-cooled mounting assembly, a heating module, a filament feed wheel assembly, and a printhead.

[0008] The mounting support is mounted on the external drive mechanism; a filament feeding wheel assembly for conveying printing filament is provided on the mounting support; a heating module is provided on the lower side of the filament feeding wheel assembly; the heating module is mounted and connected to the mounting support.

[0009] The lower side of the heating module is provided with a print head for performing printing operations, and the print head is connected to the mounting support by bolts.

[0010] An air-cooled mounting assembly is installed on the mounting support; the air-cooled mounting assembly is fastened to the mounting support; a cold air fan is installed on the air-cooled mounting assembly to cool the print head printing area.

[0011] The mounting support includes a support frame, a locking slider, and a top support plate; the locking slider is installed on one side of the support frame for engaging with the external guide rail; the heating module, the wire feeding wheel assembly, and the nozzle are assembled on the other side of the support frame, and the top support plate is fixedly installed on the top of the support frame.

[0012] The air-cooled mounting assembly includes a left side plate, a right side plate, and a mounting cover plate; the left side plate is bolted to the left side of the support frame; the right side plate is bolted to the right side of the support frame; the mounting cover plate is fastened between the left side plate and the right side plate and is respectively installed and connected to the left side plate and the right side plate.

[0013] Furthermore, heat dissipation grooves are machined on both the left and right side panels for heat dissipation.

[0014] Furthermore, a left cooling assembly for cooling the printed product is installed on the left side plate, and a right cooling assembly for cooling the printed product is installed on the right side plate. The left and right cooling assemblies have the same structure and are symmetrically arranged on both sides of the printhead.

[0015] Furthermore, an air-cooled mounting bracket is installed on the mounting cover, and a cold air fan for cooling the heating module is installed on the air-cooled mounting bracket.

[0016] The left and right cooling components each include a fixed base, a support base, an air-cooled base, and an air duct. The fixed base is bolted to the left and right side plates. The support base is connected to the fixed base via a plastic transition piece. The plastic transition piece can be adjusted for plastic deformation angle. The air-cooled base is mounted on the support base, and a printer air cooler is mounted on the upper part of the air-cooled base. The air duct is installed at the lower part of the air-cooled base.

[0017] The beneficial effects of this utility model are as follows: In specific operation and use, this utility model can achieve rapid cooling of the print head during the printing process through the coordinated action of components such as the mounting support, air-cooled mounting assembly, heating module, filament feeding wheel assembly, and print head, thus preventing the printed product from deforming or softening. Specifically, this utility model has a left cooling assembly and a right cooling assembly installed on the left and right sides respectively. When working, the left and right cooling assemblies can generate cold air through the print head cooling fan installed on them and rapidly cool the printed product through the air vent, thereby ensuring rapid cooling and shaping of the product. At the same time, heat dissipation grooves are opened on the left and right sides, and a cooling fan is installed on the mounting cover. Under the coordinated action of the above structural design, heat dissipation of the heating module can be achieved, preventing the heating module from overheating and prematurely softening the printing filament and clogging the heating module inlet. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the axial side structure of the printhead structure of this utility model;

[0019] Figure 2 This is a structural schematic diagram of the mounting support part in this utility model;

[0020] Figure 3 This is a structural schematic diagram of the air-cooled mounting assembly in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the left cooling assembly and the right cooling assembly in this utility model;

[0022] The numbers in the diagram are as follows: 1-Installation bearing part, 2-Air-cooled mounting assembly, 3-Heating module, 4-Wire feeding wheel assembly, 5-Spray head; 11-Support frame, 12-Clamping slider, 13-Top bearing plate; 21-Left side plate, 22-Right side plate, 23-Mounting cover plate, 24-Heat dissipation groove, 25-Left cooling assembly, 26-Right cooling assembly, 27-Air-cooled fixed support; 251-Fixed seat, 252-Bearing seat, 253-Air-cooled base, 254-Air vent. Detailed Implementation

[0023] Specific Embodiment 1: The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. It should be noted that: In this utility model, unless otherwise specified, all implementation methods and preferred implementation methods mentioned herein can be combined with each other to form new technical solutions. In this utility model, unless otherwise specified, all technical features and preferred features mentioned herein can be combined with each other to form new technical solutions.

[0024] As per the specification attached to this utility model Figure 1 As shown, existing printheads cannot achieve rapid cooling and shaping, resulting in insufficient hardening of the printed product structure, deformation, softening, and warping. Furthermore, the temperature of the heating module 3 for the printhead consumables is difficult to control; excessively high temperatures can cause the filament to soften near the feed port of the heating module 3, leading to feed blockage. This invention designs and provides a printhead structure for a large 3D printer, mainly comprising: a mounting support 1, an air-cooled mounting assembly 2, a heating module 3, a filament feed roller assembly 4, and a printhead 5. The mounting support 1 is primarily used to mount and support structural components such as the heating module 3, the filament feed roller assembly 4, and the printhead 5. During installation, the mounting support 1... The device is mounted on an external drive mechanism; a filament feeding wheel assembly 4 for conveying printing filament is provided on the mounting support 1; a heating module 3 is provided on the lower side of the filament feeding wheel assembly 4, which is used to heat the printing consumables, and has an inlet at the top and an outlet at the bottom that communicates with the upper part of the printhead; during installation, the heating module 3 is connected to the mounting support 1; a printhead 5 for performing printing operations is provided on the lower side of the heating module 3, and the printhead 5 is connected to the mounting support 1 by bolts; an air-cooled mounting assembly 2 is mounted on the mounting support 1; the air-cooled mounting assembly 2 is fastened to the mounting support 1; a cooler is mounted on the air-cooled mounting assembly 2 to cool the printing part of the printhead.

[0025] As per the specification attached to this utility model Figure 2As shown, the mounting and supporting part 1 for mounting and supporting the heating module 3, the wire feeding wheel assembly 4, the nozzle 5, etc. includes a support frame 11, a locking slider 12, and a top support plate 13. The support frame 11 is mainly used for mounting and supporting the heating module 3, the wire feeding wheel assembly 4, the nozzle 5, etc. During installation, the locking slider 12 is installed on one side of the support frame 11 for engaging with the external guide rail. The heating module 3, the wire feeding wheel assembly 4, and the nozzle 5 are assembled on the other side of the support frame 11, and the top support plate 13 is fixedly installed on the top of the support frame 11.

[0026] As per the specification attached to this utility model Figure 3 As shown, the air-cooled mounting assembly 2, used for mounting and supporting air-cooled structural components, includes a left side plate 21, a right side plate 22, and a mounting cover plate 23. The left side plate 21 supports the left cooling assembly 25, and the right side plate 22 supports the right cooling assembly 26. During installation, the left side plate 21 is bolted to the left side of the support frame 11, and the right side plate 22 is bolted to the right side of the support frame 11. The mounting cover plate 23 is fastened between the left side plate 21 and the right side plate 22 and is connected to both the left side plate 21 and the right side plate 22.

[0027] Furthermore, as per the instruction manual... Figure 1 As shown, in order to facilitate the installation of the heating module 3, heat dissipation grooves 24 are machined on both the left side plate 21 and the right side plate 22 for heat dissipation. The heat dissipation grooves 24 are opened corresponding to the heating module 3.

[0028] As per the specification attached to this utility model Figure 3 As shown, a left cooling assembly 25 for cooling the printed product is installed on the left side plate 21, and a right cooling assembly 26 for cooling the printed product is installed on the right side plate 22. The left cooling assembly 25 and the right cooling assembly 26 have the same structure and are symmetrically arranged on both sides of the printhead 5. Meanwhile, to facilitate rapid cooling of the heating module 3, a wind-cooled fixing bracket 27 is installed on the mounting cover plate 23, and a cooling fan for cooling the heating module 3 is installed on the wind-cooled fixing bracket 27.

[0029] As per the specification attached to this utility model Figure 4As shown, the left cooling assembly 25 and right cooling assembly 26, mainly used for rapid cooling of printed products, include a fixed base 251, a support base 252, an air-cooled base 253, and an air duct 254. The fixed base 251 supports the support base 252 and is bolted to the left side plate 21 and right side plate 22 during installation. The support base 252 is connected to the fixed base 251 via a plastic transition piece. This plastic transition piece allows for plastic deformation angle adjustment to adjust the angle of the support base 252 relative to the fixed base 251. The air-cooled base 253, mounted on the support base 252, is used to mount a cooling fan for the printed product. The cooling fan is mounted on the upper part of the air-cooled base 253, and the air duct 254, located at the lower part of the air-cooled base 253, guides the cooling air generated by the cooling fan.

[0030] The installation and use process of the print head structure for a large 3D printer according to this utility model is as follows:

[0031] I. The installation process is as follows:

[0032] First, the installer can install the mounting support 1. Specifically, the locking slider 12 can be installed on one side of the support frame 11 to engage with the external guide rail. The heating module 3, the wire feeding wheel assembly 4, and the nozzle 5 are assembled on the other side of the support frame 11. A top support plate 13 is fixedly installed on the top of the support frame 11. Then, the left side plate 21 is bolted to the left side of the support frame 11. The right side plate 22 is bolted to the right side of the support frame 11. Before installation, heat dissipation grooves 24 need to be machined on both the left and right side plates 21 and 22 for heat dissipation. The mounting cover 23 is fastened between the left and right side plates 21 and 22 and connected to them respectively. Then, a wind-cooled fixed support 27 is installed on the mounting cover 23. A cooling fan for cooling the heating module 3 is installed on the air-cooled fixed support 27. A left cooling component 25 for cooling the printed product is installed on the left side plate 21, and a right cooling component 26 for cooling the printed product is installed on the right side plate 22. The left cooling component 25 and the right cooling component 26 have the same structure. In specific installation, the fixed base 251 can be installed on the left side plate 21 and the right side plate 22 with bolts; the bearing base 252 is installed and connected to the fixed base 251 through a plastic transition piece; the air-cooled base 253 is installed on the bearing base 252 to install the printing product cooling fan. The printing product cooling fan is installed on the upper part of the air-cooled base 253, and the air duct 254 is installed at the lower part of the air-cooled base 253 to guide the cooling air generated by the cooling fan. Thus, the installation process of this utility model is completed.

[0033] In practical use, the printing filament enters the inlet of the heating module 3 under the feeding action of the filament feeding wheel assembly 4. Under the heating action of the heating module 3, it becomes molten. The upper part of the nozzle 5 is installed at the outlet position on the lower side of the heating module 3. The molten consumable is ejected from the nozzle 5 onto the printing platform for product printing. During this process, a left cooling assembly 25 for cooling the printed product is installed on the left side plate 21, and a right cooling assembly 26 for cooling the printed product is installed on the right side plate 22. The left cooling assembly 25 and the right cooling assembly 26 are located at the same position. When the cooling fan for the printed product in 26 is started, the cooling air generated by the cooling fan is blown out through the air duct 254 and blown onto the printed product on the printing platform under the guiding effect of the air duct 254, so as to quickly cool the printed product and thus ensure the rapid cooling and shaping of the product. At the same time, the present application has heat dissipation slots 24 on the left side plate 21 and the right side plate 22, and a cooling fan is installed on the mounting cover plate 23. Under the synergistic effect of the above structural design, heat dissipation of the heating module 3 can be achieved, preventing the heating module 3 from overheating and softening the printing filament in advance and clogging the feed port of the heating module 3.

[0034] 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 illustrative of the principles of this 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.

Claims

1. A printhead structure for a large 3D printer, characterized in that, It includes a mounting support unit (1), an air-cooled mounting assembly (2), a heating module (3), a wire feeding wheel assembly (4), and a nozzle (5); The mounting support unit (1) is mounted on the external drive mechanism; a wire feeding wheel assembly (4) for conveying printing filament is provided on the mounting support unit (1); a heating module (3) is provided on the lower side of the wire feeding wheel assembly (4); the heating module (3) is installed and connected to the mounting support unit (1); The lower side of the heating module (3) is provided with a print head (5) for performing printing operations. The print head (5) is connected to the mounting support (1) by bolts. A cooling mounting assembly (2) is installed on the mounting support (1); the cooling mounting assembly (2) is fastened to the mounting support (1); a cooling fan for cooling the print head printing part is installed on the cooling mounting assembly (2).

2. The printhead structure for a large 3D printer according to claim 1, characterized in that, The mounting support part (1) includes a support frame (11), a locking slider (12) and a top support plate (13); the locking slider (12) is installed on one side of the support frame (11); the heating module (3), the wire feeding wheel assembly (4) and the nozzle (5) are assembled on the other side of the support frame (11), and the top support plate (13) is fixedly installed on the top of the support frame (11).

3. The printhead structure for a large 3D printer according to claim 1, characterized in that, The air-cooled mounting assembly (2) includes a left side plate (21), a right side plate (22), and a mounting cover plate (23); the left side plate (21) is bolted to the left side of the support frame (11); the right side plate (22) is bolted to the right side of the support frame (11); and the mounting cover plate (23) is fastened between the left side plate (21) and the right side plate (22).

4. The printhead structure for a large 3D printer according to claim 3, characterized in that, Heat dissipation grooves (24) are machined on both the left side plate (21) and the right side plate (22) for heat dissipation.

5. The printhead structure for a large 3D printer according to claim 4, characterized in that, A left cooling assembly (25) for cooling the printed product is installed on the left side plate (21), and a right cooling assembly (26) for cooling the printed product is installed on the right side plate (22). The left cooling assembly (25) and the right cooling assembly (26) have the same structure and are symmetrically arranged on both sides of the nozzle (5).

6. The printhead structure for a large 3D printer according to claim 3, characterized in that, A wind-cooled fixed support (27) is installed on the mounting cover plate (23), and a cold air fan for cooling the heating module (3) is installed on the wind-cooled fixed support (27).

7. The printhead structure for a large 3D printer according to claim 5, characterized in that, The left cooling assembly (25) and the right cooling assembly (26) both include a fixed base (251), a support base (252), an air-cooled base (253), and an air duct (254); the fixed base (251) is bolted to the left side plate (21) and the right side plate (22); the support base (252) is connected to the fixed base (251) by a plastic transition piece; the plastic transition piece can be adjusted for plastic deformation angle; the air-cooled base (253) is mounted on the support base (252), a printing product air cooler is mounted on the upper part of the air-cooled base (253), and the air duct (254) is mounted on the lower part of the air-cooled base (253).

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