Nozzle outlet structure for 3D printer

Abstract

The utility model relates to a nozzle outlet structure for a 3D printer, the middle part of a nozzle is provided with a circulation channel, the end part of the circulation channel is provided with an outlet section, the outlet section of the nozzle is internally provided with a forming part, the forming part is arranged along the length direction of the outlet section, and the outlet section is divided into a plurality of discharging areas by the forming part. The utility model provides a nozzle outlet structure for a 3D printer, and aims to solve or at least alleviate the problem that more consumables are consumed when a nozzle with a circular outlet is used for printing.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printers, and in particular relates to a nozzle outlet structure for a 3D printer. Background Art

[0002] 3D printing does not make parts by subtracting materials like traditional machining, but by adding materials. Parts are made using a 3D printer based on a digital model. The 3D printer melts the consumables and extrude them from the printer nozzle. After the melted consumables leave the printer nozzle, they become solid, thus achieving 3D printing of parts.

[0003] The filament enters from the larger inlet hole at the top of the nozzle, is heated and melted in the nozzle connected to an external heat source, and then extruded from the smaller outlet hole at the end of the nozzle.

[0004] Currently, most nozzle outlets are circular, but the shapes of workpieces to be printed vary. Using a circular outlet will increase printing time and consume more consumables. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art, solve or at least alleviate the problem of consuming more consumables when printing with a circular outlet nozzle, and provide a nozzle outlet structure for a 3D printer.

[0006] The utility model is realized by the following technical solutions:

[0007] A nozzle outlet structure for a 3D printer, wherein a flow channel is provided in the middle of the nozzle, an outlet section is provided at the end of the flow channel, a forming part is provided in the outlet section of the nozzle, the forming part is arranged along the length direction of the outlet section, and the forming part divides the outlet section into a plurality of discharge areas.

[0008] In order to further realize the utility model, the following technical solutions can be preferably selected:

[0009] Preferably, the forming part comprises a forming block, which is coaxially arranged in the outlet section, the cross-sectional shape of the forming block is the same as the cross-sectional shape of the outlet section, and an annular slit is formed around the outer wall of the forming block and the inner wall of the outlet section.

[0010] Preferably, a positioning plate is provided at the upper portion of the forming block along its radial direction, and two ends of the positioning plate are respectively connected to the outer wall of the forming portion and the inner wall of the flow channel, and a plurality of positioning plates are arranged in a circular array.

[0011] Preferably, the molding part comprises a molding ring, which is arranged in the annular slit between the molding part and the outlet section, and the inner periphery of the molding ring is equidistantly spaced from the outer periphery of the molding block, and the outer periphery of the molding ring is equidistantly spaced from the inner periphery of the outlet section.

[0012] Preferably, the cross-sectional shape of the outlet section is circular, elliptical, rectangular or regular polygonal.

[0013] Preferably, when the cross-sectional shape of the outlet section is a rectangle, the two short sides of the rectangle are outwardly convex semicircles, or the two long sides of the rectangle are outwardly convex or inwardly concave arcs.

[0014] Preferably, the forming part comprises a forming block, which is arranged in the outlet section along the length direction of the outlet section, the cross section of the forming block is Y-shaped or cross-shaped, and the end of the forming block is connected to the inner wall of the outlet section.

[0015] Preferably, the molding portion comprises a molding ring, which is annular and arranged in the outlet section, and the periphery of the outer wall of the molding ring and the periphery of the inner wall of the outlet section are arranged at equal intervals.

[0016] Preferably, the forming part comprises a forming block, the forming block is arranged in the outlet section and a through hole is arranged in the middle thereof, and the periphery of the outer wall of the forming block is in contact with the periphery of the inner wall of the outlet section;

[0017] The forming block is made of wear-resistant material.

[0018] Through the above technical solution, the beneficial effects of the utility model are:

[0019] The nozzle of the utility model is provided with a molding part, and when the molten consumables are molded by the molding part, a certain cavity is formed, so that a finished workpiece of the same size can be obtained with less consumables, and the printing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the structural cross-sectional views of the utility model;

[0021] Figure 2 This is the second structural cross-sectional view of the utility model;

[0022] Figure 3 This is one of the front views of the utility model;

[0023] Figure 4 This is the second front view of the utility model;

[0024] Figure 5 This is the third front view of the utility model;

[0025] Figure 6 This is the fourth front view of the utility model;

[0026] Figure 7 This is the fifth front view of the utility model;

[0027] Figure 8This is the sixth front view of the utility model;

[0028] Fig. 9 This is the seventh front view of the utility model;

[0029] Fig.10 This is the eighth front view of the utility model;

[0030] Fig.11 This is the ninth front view of the utility model;

[0031] Fig.12 This is the tenth front view of the utility model;

[0032] Fig.13 This is the eleventh front view of the utility model;

[0033] Fig.14 This is the twelfth front view of the utility model;

[0034] Fig.15 This is the thirteenth front view of the utility model;

[0035] Fig.16 This is the fourteenth front view of the utility model;

[0036] Fig.17 This is the fifteenth front view of the utility model;

[0037] Fig.18 This is the sixteenth front view of the utility model;

[0038] Fig.19 It is the seventeenth front view of the utility model;

[0039] Fig. 20 This is the eighteenth front view of the utility model;

[0040] Among them: 1-nozzle; 2-exit section; 3-forming block; 4-forming ring; 5-positioning plate. DETAILED DESCRIPTION

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1:

[0043] like Figure 1-Figure 11 As shown, a nozzle outlet structure for a 3D printer is provided, wherein a flow channel is provided in the middle of the nozzle 1, an outlet section 2 is provided at the end of the flow channel, a forming part is provided in the outlet section 2 of the nozzle 1, the forming part is arranged along the length direction of the outlet section 2, and the forming part divides the outlet section 2 into a plurality of discharge areas.

[0044] The nozzle 1 of the utility model is provided with a molding part. When the molten consumables are molded by the molding part, a certain cavity is formed, so that a finished workpiece of the same size can be obtained with less consumables, and the printing efficiency is improved.

[0045] In order to make the printed consumables form a hollow structure similar to a hollow brick, the forming part includes a forming block 3, which is coaxially arranged in the outlet section 2. The cross-sectional shape of the forming block 3 is the same as the cross-sectional shape of the outlet section 2, and an annular slit is formed around the outer wall of the forming block 3 and the inner wall of the outlet section 2.

[0046] In order to fix the forming block 3 in the opening section, a positioning plate 5 is arranged radially on the upper part of the forming block 3. Both ends of the positioning plate 5 are respectively connected to the outer wall of the forming part and the inner wall of the flow channel. There are several positioning plates 5 arranged in a circular array.

[0047] In order to optimize the product structure and to be suitable for workpieces of different shapes, the cross-sectional shape of the outlet section 2 is circular, elliptical, rectangular, or regular polygonal.

[0048] When the cross-sectional shape of the outlet section 2 is a rectangle, the two short sides of the rectangle are outwardly convex semicircles, or the two long sides of the rectangle are outwardly convex or inwardly concave arcs. Embodiment 2:

[0049] like Figure 12-Figure 17 As shown, in order to improve the strength of the hollow structure, the forming part includes a forming ring 4, which is arranged in the annular slit between the forming part and the outlet section 2, and the inner wall periphery of the forming ring 4 and the outer wall periphery of the forming block 3 are equidistantly spaced apart, and the outer wall periphery of the forming ring 4 and the inner wall periphery of the outlet section 2 are equidistantly spaced apart. Embodiment 3:

[0050] like Fig.18As shown, the molding portion includes a molding block 3, which is arranged in the outlet section 2 along the length direction of the outlet section 2. The cross-section of the molding block 3 is Y-shaped or cross-shaped, and the end of the molding block 3 is connected to the inner wall of the outlet section 2. The molding block 3 not only helps to form a cavity, but also prevents the melted consumables from solidifying in the outlet section 2, thereby ensuring the smoothness of printing. Embodiment 4:

[0051] like Figure 19-20 As shown, in order to improve the strength of the printed workpiece, the molding part includes a molding ring 4, which is annular and arranged in the outlet section 2, and the periphery of the outer wall of the molding ring 4 and the periphery of the inner wall of the outlet section 2 are arranged at equal intervals. Embodiment 5:

[0052] The forming part includes a forming block 3, which is arranged in the outlet section 2 and has a through hole in the middle. The outer wall periphery of the forming block 3 fits with the inner wall periphery of the outlet section 2, and the forming block 3 is made of wear-resistant material. The size of the discharge material is adjusted and the service life is improved through the forming block 2.

[0053] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nozzle outlet structure for a 3D printer, wherein a flow channel is provided in the middle of the nozzle (1), and an outlet section (2) is provided at the end of the flow channel, characterized in that: A forming portion is provided in the outlet section (2) of the nozzle (1), the forming portion being arranged along the length direction of the outlet section (2), and the forming portion divides the outlet section (2) into a plurality of discharge areas.

2. A nozzle outlet structure for a 3D printer according to claim 1, characterized in that: The forming portion comprises a forming block (3), wherein the forming block (3) is coaxially arranged in the outlet section (2), the cross-sectional shape of the forming block (3) is the same as the cross-sectional shape of the outlet section (2), and an annular slit is formed at the periphery of the outer wall of the forming block (3) and the periphery of the inner wall of the outlet section (2).

3. The nozzle outlet structure for a 3D printer according to claim 2, characterized in that: A positioning plate (5) is provided on the upper part of the forming block (3) along its radial direction, and two ends of the positioning plate (5) are respectively connected to the outer wall of the forming portion and the inner wall of the flow channel, and a plurality of positioning plates (5) are arranged in a circular array.

4. The nozzle outlet structure for a 3D printer according to claim 2, characterized in that: The forming portion comprises a forming ring (4), wherein the forming ring (4) is arranged in an annular slit between the forming portion and the outlet section (2), wherein the periphery of the inner wall of the forming ring (4) and the periphery of the outer wall of the forming block (3) are arranged at equal intervals, and the periphery of the outer wall of the forming ring (4) and the periphery of the inner wall of the outlet section (2) are arranged at equal intervals.

5. A nozzle outlet structure for a 3D printer according to any one of claims 1 to 4, characterized in that: The cross-sectional shape of the outlet section (2) is circular, elliptical, rectangular or regular polygonal.

6. The nozzle outlet structure for a 3D printer according to claim 5, characterized in that: When the cross-sectional shape of the outlet section (2) is a rectangle, the two short sides of the rectangle are outwardly convex semicircles, or the two long sides of the rectangle are outwardly convex or inwardly concave arcs.

7. The nozzle outlet structure for a 3D printer according to claim 1, characterized in that: The forming portion comprises a forming block (3), wherein the forming block (3) is arranged in the outlet section (2) along the length direction of the outlet section (2), the cross section of the forming block (3) is Y-shaped or cross-shaped, and the end of the forming block (3) is connected to the inner wall of the outlet section (2).

8. The nozzle outlet structure for a 3D printer according to claim 7, characterized in that: The forming portion comprises a forming ring (4), which is annular and arranged in the outlet section (2), and the periphery of the outer wall of the forming ring (4) and the periphery of the inner wall of the outlet section (2) are arranged at equal intervals.

9. The nozzle outlet structure for a 3D printer according to claim 1, characterized in that: The forming portion comprises a forming block (3), the forming block (3) being arranged in the outlet section (2) and having a through hole in the middle thereof, and the periphery of the outer wall of the forming block (3) being in contact with the periphery of the inner wall of the outlet section (2); The forming block (3) is made of a wear-resistant material.

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