3D printer nozzle

Abstract

The utility model provides a 3D printer nozzle which comprises a heating aluminum block, a mounting hole is formed in the heating aluminum block, a cylindrical seat is coaxially arranged in the mounting hole, a cylindrical hole is coaxially formed in the middle of the cylindrical seat, a printing nozzle is detachably arranged at the bottom of the cylindrical hole, a throat pipe is detachably arranged in the top of the cylindrical hole, and the throat pipe is arranged in a heat dissipation device. The heat dissipation device comprises a supporting pipe, the top of the supporting pipe is connected with the upper support, the bottom of the supporting pipe is connected with the lower support, the lower support and the heating aluminum block are fixed through a fastener, the throat pipe is movably arranged in the supporting pipe, and multiple layers of cooling fins are arranged on the surface of the supporting pipe. When the printing nozzle is used, the strength of the cylindrical seat is obviously higher than that of the heating aluminum block, so that when the printing nozzle is disassembled and assembled, the threaded engagement part of the cylindrical seat cannot lose the engagement strength due to high temperature, and the problem that the threaded strength becomes poor due to temperature rise of the heating aluminum block is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printer accessory technical field, concretely is a 3D printer nozzle. BACKGROUND

[0002] 3D printing is a kind of technology of manufacturing three-dimensional object by layer-by-layer accumulation material, it utilizes the three-dimensional model data generated by computer, and through 3D printer, powder, liquid or filament material can be stacked layer by layer, and finally form a complete three-dimensional entity.

[0003] 3D printer nozzle is the important component of printer, and a complete 3D printer nozzle usually includes tube body, throat pipe, heat dissipation part, heating aluminum block, nozzle, aluminum heating block etc., nozzle is directly screwed under aluminum heating block when installing, since aluminum heating block needs to be heated to above 200 DEG C, the strength of aluminum alloy will significantly reduce under this temperature condition.And nozzle will be worn after long-time printing, so nozzle is a consumable part, when replacing nozzle, it can be directly screwed down from aluminum heating block by spanner, but when installing nozzle, nozzle needs to be screwed tightly with certain force, so under the condition of the strength reduction of aluminum alloy, the thread is extremely easy to be deformed and damaged, resulting in the poor installation precision of nozzle.For this reason, we propose a kind of 3D printer nozzle. SUMMARY

[0004] The utility model provides a kind of 3D printer nozzle, with the advantage that printing nozzle is avoided to damage heating aluminum block when disassembling, solve the problem proposed in the above background technique.

[0005] The technical scheme of the utility model is realized as follows: a kind of 3D printer nozzle is designed, including heating aluminum block, heating aluminum block is equipped with mounting hole, coaxial columnar seat is equipped in mounting hole, coaxial columnar hole is equipped in the middle part of columnar seat, printing nozzle is detachably equipped in the bottom of columnar hole, throat pipe is detachably equipped in the top of columnar hole, and throat pipe is placed in heat dissipation device.

[0006] Preferably, columnar seat is coaxially placed in mounting hole, at least two symmetrically arranged connecting seats are provided on the top of the side surface of columnar seat, and connecting seat is connected with heating aluminum block by fastener.

[0007] Preferably, printing nozzle is screw-connected below columnar hole.

[0008] Preferably, throat pipe is screw-connected in the top of columnar hole, and throat pipe is coaxial with printing nozzle.

[0009] Preferably, the heat dissipation device includes a support tube, the top of which is connected to an upper support, the bottom of which is connected to a lower support, the lower support and the heating aluminum block are fixed by fasteners, the throat is movably placed inside the support tube, and multiple layers of heat dissipation fins are provided on the surface of the support tube.

[0010] Preferably, the top of the upper support is detachably provided with a pipe joint coaxially arranged with the throat.

[0011] Preferably, a temperature detection hole is provided on the side of the heated aluminum block, and a temperature sensor is provided inside the temperature detection hole.

[0012] Compared with the prior art, this utility model has the advantage that the strength of the cylindrical seat is significantly greater than that of the heating aluminum block. Therefore, when disassembling and assembling the printing nozzle, the thread engagement of the cylindrical seat will not lose its engagement strength due to high temperature, thus avoiding the problem of the thread strength deteriorating due to the temperature rise of the heating aluminum block. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the explosive structure of this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention. Figure 1 .

[0016] Figure 3 This is a three-dimensional structural diagram of the present invention. Figure 2 .

[0017] Figure 4 This is a cross-sectional view of the present invention.

[0018] In the diagram: 1. Heating aluminum block; 2. Lower support; 3. Heat sink; 4. Upper support; 5. Pipe connector; 6. Fixing hole; 7. Temperature detection hole; 8. Printing nozzle; 9. Mounting hole; 10. Cylindrical base; 11. Connecting base; 12. Cylindrical hole; 13. Throat tube; 14. Support tube. Detailed Implementation

[0019] The technical scheme of the utility model will be described below in connection with the utility model embodiments clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] With reference to Figures 1 to 4 The utility model provides a kind of technical scheme: a kind of 3D printer nozzle, including heating aluminum block 1, heating aluminum block 1 is equipped with mounting hole 9, coaxial columnar seat 10 is equipped in mounting hole 9, columnar seat 10 is specifically installed, at least two symmetrical connection seats 11 are equipped in the top of columnar seat 10 side, connection seat 11 is connected by fastener with heating aluminum block 1, the fastener here is bolt, when bolt is tightened, columnar seat 10 can be firmly fixed in mounting hole 9, and columnar seat 10 is also convenient to disassemble and replace.The material of columnar seat 10 is steel, so that the hardness and strength of columnar seat 10 are higher than heating aluminum block 1, when heating aluminum block 1 heats, it can heat columnar seat 10 to preset temperature.

[0021] Further, the middle part of columnar seat 10 is provided with a coaxial cylindrical hole 12, and an internal thread structure is arranged in the cylindrical hole 12. In use, a printing nozzle 8 is detachably arranged at the bottom of the cylindrical hole 12, and a throat pipe 13 is detachably arranged at the top of the cylindrical hole 12. When the throat pipe 13 and the printing nozzle 8 are installed, the printing nozzle 8 is threadedly connected below the cylindrical hole 12, and the bottom of the throat pipe 13 is also threadedly connected in the top of the cylindrical hole 12, and at this time, the throat pipe 13 is coaxial with the printing nozzle 8.

[0022] In actual use, a pipe joint 5 coaxial with the throat pipe 13 is detachably arranged at the top of the upper support 4, that is, the pipe joint 5 is threadedly connected with the top of the upper support 4, and a material guide pipe is arranged on the pipe joint 5. During printing, the wire is guided into the throat pipe 13 along the material guide pipe, and then passes through the heating aluminum block 1. Since the columnar seat 10 is heated by the heating aluminum block 1, the material will melt and then be extruded from the printing nozzle 8.

[0023] After a long time of printing, if the printing nozzle 8 needs to be replaced or the bottom of the printing nozzle 8 is found to be worn out after a long time of printing, the original printing nozzle can be disassembled and then a new printing nozzle 8 can be installed. At this time, the importance of the columnar seat 10 is manifested. Since the strength of the columnar seat 10 is significantly greater than that of the heating aluminum block 1, the thread engagement of the columnar seat 10 will not lose its engagement strength due to high temperature during disassembly and assembly of the printing nozzle 8, thereby avoiding the problem that the strength of the thread is deteriorated due to the increase of the temperature of the heating aluminum block, resulting in that the printing nozzle 8 is not firmly installed. Moreover, damage to the heating aluminum block 1 during disassembly and assembly of the printing nozzle 8 is also avoided.

[0024] Further, the wire at the throat pipe 13 cannot be melted, in order to avoid the wire in the throat pipe 13 melting, so the throat pipe 13 is placed in the heat dissipation device. Figure 1 and Figure 2 As shown in the heat dissipation device includes a support pipe 14, the support pipe 14 top with the upper support 4 is connected, the support pipe 14 bottom with the lower support 2 is connected, the lower support 2 and the heating aluminum block 1 is fixed by fastener, the fastener here is bolt, that is, the lower support 2 and the heating aluminum block 1 are fastened by bolt, the throat pipe 13 is movably arranged in the support pipe 14, and a plurality of heat dissipation fins 3 are arranged on the surface of the support pipe 14; One side of the heat dissipation device needs to be provided with a fan, so that the airflow blown by the fan directly blows between the heat dissipation fins 3, the heat-conducting paste can be coated on the surface of the throat pipe 13, so that the efficiency of the heat transfer from the throat pipe 13 to the support pipe 14 can be increased, thereby accelerating the cooling speed of the throat pipe 13.

[0025] Based on the above embodiment, further optimization can be made, the heating aluminum block 1 side is provided with a temperature detection hole 7, and a temperature sensor is arranged in the temperature detection hole 7, and the temperature sensor is used for monitoring the heating temperature of the heating aluminum block 1.

[0026] Based on the above embodiment, further optimization can be made, in order to facilitate installation, two fixing holes 6 can be arranged on the upper support 4, because the heat dissipation device and the heating aluminum block have been connected into an integrated body, so in actual use, the upper support 4 can be fixed on the printer by bolt.

[0027] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A 3D printer nozzle, comprising a heated aluminum block (1), characterized in that, The heating aluminum block (1) is provided with mounting holes (9), and a cylindrical seat (10) is coaxially provided in the mounting holes (9); The cylindrical base (10) has a coaxial cylindrical hole (12) in the middle; A printing nozzle (8) is detachably provided at the bottom of the cylindrical hole (12), and a throat tube (13) is detachably provided inside the top of the cylindrical hole (12). The throat tube (13) is placed inside the heat dissipation device.

2. The 3D printer nozzle as described in claim 1, characterized in that, The cylindrical base (10) is coaxially placed in the mounting hole (9). At least two symmetrically arranged connecting seats (11) are provided on the top side of the cylindrical base (10). The connecting seats (11) are connected to the heating aluminum block (1) by fasteners.

3. The 3D printer nozzle as described in claim 2, characterized in that, The printing nozzle (8) is threaded below the cylindrical hole (12).

4. The 3D printer nozzle as described in claim 3, characterized in that, The bottom of the throat (13) is threaded into the top of the cylindrical hole (12), and the throat (13) is coaxial with the printing nozzle (8).

5. The 3D printer nozzle as described in claim 1 or 3, characterized in that, The heat dissipation device includes a support tube (14), the top of the support tube (14) is connected to the upper support (4), the bottom of the support tube (14) is connected to the lower support (2), the lower support (2) is fixed to the heating aluminum block (1) by fasteners, the throat tube (13) is movably placed inside the support tube (14), and multiple layers of heat dissipation fins (3) are provided on the surface of the support tube (14).

6. The 3D printer nozzle as described in claim 5, characterized in that, The top of the upper support (4) is detachably equipped with a pipe joint (5) that is coaxially arranged with the throat (13).

7. The 3D printer nozzle as described in claim 6, characterized in that, A temperature detection hole (7) is provided on the side of the heated aluminum block (1), and a temperature sensor is provided inside the temperature detection hole (7).

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