Quickly-assembled split-flow printing nozzle

Abstract

Relates to the technical field of 3D printing, in particular to a fast-assembly shunting printing nozzle which comprises a nozzle, a heat-conducting spur shunting part and a heat-conducting long pipe with a consumable channel, the heat-conducting long pipe is detachably sleeved with a heating ring, and the lower end opening of the heat-conducting long pipe is detachably connected with the upper end of the nozzle; the spur flow dividing piece comprises a flow dividing column body and a conical spur body, a base of the conical spur body is fixed to the center of the upper end face of the flow dividing column body, a plurality of flow dividing through holes are evenly and annularly formed in the outer edge of the upper end face of the flow dividing column body, and the flow dividing column body is detachably inserted into an upper end opening of the nozzle; the tip of the conical thorn body can extend into the center of the lower end of the consumable channel to distribute the consumable into the distribution through hole; the fast-assembly split-flow printing nozzle can improve the split-flow speed and the melting effect of consumables, and is convenient to manufacture, disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a quick-install split-flow printing nozzle. Background Art

[0002] As the demand for large-scale 3D printing projects increases, the printing efficiency and quality are also more valued. Replacing the nozzle with a larger diameter and maintaining a stable flow rate and speed can significantly reduce the time cost in projects that require long-term printing and improve the efficiency of project completion. A nozzle with a large flow rate needs to be used with a large-diameter filament. When a large-diameter filament passes through a heating component, the core position of the filament often fails to reach a completely ideal melting state due to its large diameter, so unevenness or even blockage is likely to occur after extrusion.

[0003] The Chinese utility model patent with announcement number CN217916807U discloses a consumable heating structure for a 3D printer, which cuts and diverts the consumable passing through by setting a diverter in the upper channel of the heating block, thereby increasing the heated area and improving the melting effect of large-diameter wire. However, the existing heating structure has the following defects: first, the structure of the traditional heating block itself is relatively complex, and adding a diverter in the middle of the heating block will increase the manufacturing cost and is not conducive to the disassembly and maintenance of the entire nozzle structure; second, the large-diameter wire itself is relatively hard inside and difficult to melt, and the difficulty of cutting and diverting it will also increase. In addition, the existing patent diversion only relies on three small holes, which requires the extrusion motor to push the consumable hard for cutting. Therefore, the existing idea of ​​cutting first and then melting causes large motor losses, low diversion efficiency, and is prone to large changes in flow before and after diversion. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the utility model discloses a quick-install flow-dividing printing nozzle, which can improve the flow-dividing speed and melting effect of consumables and is easy to manufacture and disassemble.

[0005] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0006] A quick-install diverter printing nozzle comprises a nozzle, a heat-conducting protruding diverter and a heat-conducting long tube with a consumable channel, wherein a heating ring is detachably mounted on the outside of the heat-conducting long tube, and the lower port of the heat-conducting long tube is detachably connected to the upper end of the nozzle; the protruding diverter comprises a diverter column and a conical thorn body fixed at the center of the upper end face of the diverter column at a base, a plurality of diverter flow holes are evenly arranged around the outer edge of the upper end face of the diverter column, and the diverter column is detachably inserted into the upper port of the nozzle so that the tip of the conical thorn body can extend into the center of the lower end of the consumable channel to divert the consumable into the diverter flow hole.

[0007] Furthermore, a positioning flange is provided on the outer wall of the lower end of the long heat-conducting tube, a positioning pressure ring is threadedly sleeved on the outer wall of the upper end of the long heat-conducting tube, and the heating ring is arranged between the positioning flange and the positioning pressure ring.

[0008] Furthermore, a plurality of heating rings are provided along the axial direction of the long heat-conducting tube.

[0009] Furthermore, a countersunk hole corresponding to the consumables channel is provided in the center of the lower end surface of the long heat-conducting tube, and the outer wall of the upper end of the nozzle is correspondingly threadedly connected to the wall of the countersunk hole.

[0010] Furthermore, the conical thorn body and the diverter column are integrally connected, and the diverter column and the nozzle are clearance-fitted.

[0011] Furthermore, the nozzle channel is configured as a stepped hole which is larger at the top and smaller at the bottom, the stepped surface of the stepped hole is configured as a conical surface, and the outer edge of the lower end surface of the diverter column is in corresponding contact with the upper end of the stepped surface of the stepped hole.

[0012] Furthermore, the upper end of the nozzle is made of elastic material, and the lower end of the heat-conducting long tube is plug-connected with the upper end of the nozzle accordingly.

[0013] Furthermore, the upper end of the long heat-conducting tube is connected in sequence with a heat dissipation block and an extrusion motor.

[0014] Furthermore, the heating ring is configured as a ceramic heating ring.

[0015] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0016] The quick-install diversion printing nozzle disclosed by the utility model adopts a quick-release structure, in which a protruding diversion piece for diverting consumables is installed in the nozzle, and the heating device also adopts a set of heating rings, so that the entire nozzle structure can be convenient for assembly, production and use, and can greatly reduce the manufacturing cost; compared with the existing technology of cutting first and then melting, the utility model adopts a long heat-conducting tube to prolong the melting time, so that the core of the consumable is heated to a flow state that is easy to split, and then the conical thorns are used at the nozzle for natural diversion to quickly and evenly distribute the temperature inside and outside the consumable, thereby improving the melting state of the consumable and ensuring that the entire discharge process of the consumable is more stable and rapid. The maximum printing speed of the printer using this nozzle can reach 550 mm per second. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional schematic diagram of the implementation structure of the utility model;

[0018] Figure 2 is a cross-sectional schematic diagram of the installation structure of the heating ring;

[0019] Figure 3 is a schematic cross-sectional structural diagram of the stab diverter;

[0020] Figure 4 is a schematic diagram of the three-dimensional structure of the stab diverter;

[0021] Figure 5 is a schematic cross-sectional structural diagram of the nozzle;

[0022] Figure 6 is a schematic diagram of the three-dimensional structure of the piercing flow diverter installed in the nozzle;

[0023] Figure 7 yes Figure 6 Schematic diagram of the transverse cross-sectional structure.

[0024] In the figure: 1, nozzle; 101, step hole; 2, puncture diverter; 201, diverter column; 202, cone body; 203, diverter flow hole; 3, long heat-conducting tube; 301, consumable channel; 302, positioning flange; 303, countersunk hole; 4, heating ring; 5, positioning pressure ring. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, they are only corresponding to the drawings of the present invention, for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction: Embodiment 1:

[0026] Combined with Figure 1-7 The quick-install flow-dividing printing nozzle comprises a nozzle 1, a heat-conducting stab flow-dividing member 2 and a heat-conducting long tube 3 with a consumable channel 301. As required, the upper end of the heat-conducting long tube 3 is also connected with a heat sink and an extrusion motor in sequence;

[0027] A heating ring 4 is detachably mounted on the outside of the long heat-conducting tube 3. The heating ring 4 can be installed to meet the length requirements of the long heat-conducting tube 3. Specifically, the heating ring 4 can be set as a ceramic heating ring. The ceramic heating ring has good high-temperature stability and lower energy consumption than the traditional heating block. According to needs, a positioning flange 302 is provided on the outer wall of the lower end of the long heat-conducting tube 3, and a positioning pressure ring 5 is threadedly sleeved on the outer wall of the upper end of the long heat-conducting tube 3. The heating ring 4 is arranged between the positioning flange 302 and the positioning pressure ring 5. The positioning flange 302 and the positioning pressure ring 5 are used to install the heating ring 4. Axial positioning, and unscrewing the positioning pressure ring 5, also facilitates the disassembly and assembly of the heating ring 4; in addition, a plurality of heating rings 4 are provided along the axial direction of the heat-conducting long tube 3; the lower port of the heat-conducting long tube 3 is detachably connected to the upper end of the nozzle 1. Specifically, a countersunk hole 303 corresponding to the consumable channel 301 is provided in the center of the lower end surface of the heat-conducting long tube 3, and the bottom surface of the countersunk hole 303 can be set as a conical surface of the transition connecting the consumable channel 301. The outer wall of the upper end of the nozzle 1 is correspondingly threadedly connected to the hole wall of the countersunk hole 303, and the countersunk hole 303 is used to install and position the nozzle 1, and it is convenient for the nozzle 1 to be screwed and disassembled;

[0028] The piercing diverter 2 comprises a diverter column 201 and a conical thorn body 202 whose base is fixed to the center of the upper end face of the diverter column 201. The outer edge of the upper end face of the diverter column 201 is evenly ringed with a plurality of diverter holes 203. The diverter column 201 can be detachably inserted into the upper port of the nozzle 1 so that the tip of the conical thorn body 202 can be correspondingly extended into the center of the lower end of the consumable channel 301 to divert the consumable into the diverter hole 203. The consumable is quickly diverted by the conical thorn body 202, and the diverted consumable enters each diverter hole 203. The diverter column 201 is used to evenly distribute the temperature inside and outside the consumable, thereby improving the melting state of the consumable and ensuring fast and stable discharge. Figure 1 and Figure 6 As shown in the installation structure of the middle piercing diverter 2, the consumables will experience a natural change process of integration, diversion, and re-convergence after passing through the piercing diverter 2, such as Figure 7 As shown, the diversion holes 203 can be set to six or eight according to actual needs; according to needs, the cone thorn body 202 and the diversion column 201 are connected as a whole, and the diversion column 201 and the nozzle 1 are clearance-matched for easy disassembly and assembly.

[0029] When implementing the quick-install shunt printing nozzle of the utility model, when installing the heating ring 4, it is only necessary to put the heating ring 4 on the outside of the heat-conducting long tube 3, and then tighten the positioning pressure ring 5. When installing the stab shunt piece 2, it is only necessary to screw and insert the stab shunt piece 2 into the nozzle 1 first, and then screw and insert the nozzle 1 into the heat-conducting long tube 3. When removing the stab shunt piece 2, it is necessary to push the stab shunt piece 2 out from the lower end of the nozzle 1 in the reverse direction. When all the installation is completed and used, the consumables enter from the upper end of the consumable channel 301 of the heat-conducting long tube 3. After being heated by the heating ring 4 over a long distance, although there is still a temperature difference between the inside and the outside of the consumables, the inner core will become softer, which is convenient for the stab shunt piece 2 to shunt, and the shunt process can further balance the temperature difference between the inside and the outside, so that the consumables can be discharged stably from the nozzle 1. Embodiment 2:

[0030] The difference from the first embodiment is that the nozzle 1 channel is set as a stepped hole 101 which is larger at the top and smaller at the bottom, the stepped surface of the stepped hole 101 is set as a conical surface, and the outer edge of the lower end surface of the diverter column 201 is in correspondence with the upper end of the stepped surface of the stepped hole 101, so as to ensure that the protruding diverter 2 can be positioned and installed, and facilitate the consumables after diversion to flow out; according to needs, the upper end of the nozzle 1 is set as an elastic material, and the lower port of the heat-conducting long tube 3 is correspondingly plug-connected with the upper end of the nozzle 1, so that the upper end of the nozzle 1 can be squeezed and deformed by the inside and outside during insertion, and can be more stably installed on the heat-conducting long tube 3.

[0031] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A quick-install split-flow printing nozzle, characterized by: The invention comprises a nozzle (1), a heat-conducting piercing flow diverter (2), and a heat-conducting long tube (3) having a consumable passage (301); the heat-conducting long tube (3) is detachably sleeved with a heating ring (4); the lower end of the heat-conducting long tube (3) is detachably connected to the upper end of the nozzle (1); the piercing flow diverter (2) comprises a flow diverter column (201) and a cone piercing body (202) whose base is fixed to the center of the upper end face of the flow diverter column (201); a plurality of diverting flow holes (203) are evenly arranged around the outer edge of the upper end face of the flow diverter column (201); the flow diverter column (201) is detachably inserted into the upper end of the nozzle (1) so that the tip of the cone piercing body (202) can extend into the center of the lower end of the consumable passage (301) to divert the consumable into the diverting flow hole (203).

2. The quick-install split-flow printing nozzle according to claim 1, characterized in that: The outer wall of the lower end of the long heat-conducting tube (3) is provided with a positioning flange (302), the outer wall of the upper end of the long heat-conducting tube (3) is threadedly sleeved with a positioning pressure ring (5), and the heating ring (4) is arranged between the positioning flange (302) and the positioning pressure ring (5).

3. The quick-install split-flow printing nozzle according to claim 1 or 2, characterized in that: A plurality of heating rings (4) are provided along the axial direction of the long heat-conducting tube (3).

4. The quick-install split-flow printing nozzle according to claim 1, characterized in that: A countersunk hole (303) corresponding to the consumables channel (301) is provided in the center of the lower end surface of the long heat-conducting tube (3), and the outer wall of the upper end of the nozzle (1) is correspondingly threadedly connected to the wall of the countersunk hole (303).

5. The quick-install split-flow printing nozzle according to claim 1, characterized in that: The conical thorn body (202) and the flow-dividing column (201) are integrally connected, and the flow-dividing column (201) and the nozzle (1) are clearance-matched.

6. The quick-install split-flow printing nozzle according to claim 1, characterized in that: The nozzle (1) channel is configured as a stepped hole (101) that is larger at the top and smaller at the bottom, the stepped surface of the stepped hole (101) is configured as a conical surface, and the outer edge of the lower end surface of the flow splitting column (201) is in corresponding contact with the upper end of the stepped surface of the stepped hole (101).

7. The quick-install split-flow printing nozzle according to claim 1, characterized in that: The upper end of the nozzle (1) is made of elastic material, and the lower end of the long heat-conducting tube (3) is plug-connected to the upper end of the nozzle (1) in a corresponding manner.

8. The quick-install split-flow printing nozzle according to claim 1, characterized in that: The upper end of the long heat-conducting tube (3) is connected in sequence to a heat dissipation block and an extrusion motor.

9. The quick-install split-flow printing nozzle according to claim 1, characterized in that: The heating ring (4) is configured as a ceramic heating ring.

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