Colorful 3D printer nozzle device

Abstract

The utility model relates to the technical field of printers, in particular to a colorful 3D printer nozzle device which comprises a nozzle shell used for containing printing materials, a cover body covering the top of the nozzle shell, a stirring assembly, a heating assembly and a nozzle. One end of the heating assembly is fixed to the bottom in the spray head shell, and a stirring area is formed between the heating assembly and the spray head shell. The stirring assembly is arranged in the stirring area; a plurality of feeding pipes communicated with the stirring area are arranged on the outer surface of the lower part of the spray head shell; a material passing channel is formed in the middle of the heating assembly; a through hole is formed in the bottom of the nozzle shell; the nozzle is installed at the bottom of the spray head shell and can communicate with the material passing channel through the through hole so that the printing material in the stirring area can enter the nozzle from the top of the heating assembly. According to the utility model, the backflushing type discharging can be realized, the printing material can be fully heated and stirred, and the color of the printing material is stable and uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a multi-color 3D printer nozzle device. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a kind of rapid prototyping process equipment. The principle of 3D printing technology is that after the printer is connected to the computer, it can stack the "printing materials" layer by layer through computer control, and finally turn the blueprint on the computer into a physical object. The difference between 3D printers and ordinary printers lies in the different consumables. The consumables of ordinary printers are composed of ink and paper, and the printing forms a two-dimensional plane. The consumables of 3D printers are wax, powdered metal or plastic and other adhesive materials. Three-dimensional objects are made by printing adhesive material layers. Due to the special nature of the consumables of 3D printers, it is particularly difficult to heat, dissolve and stir the consumables to form uniform and stable color printing materials. It is important. The current 3D printers also have difficulty in achieving single-nozzle color printing, and there are problems such as color difference during the printing process. The main reasons are that the feed amount of consumables and pigments is not accurately controlled, and the stirring is not sufficient. For example, the Chinese patent application number is "201810771134.1" and the utility model name is "A nozzle device for a 3D printer". Although the technology disclosed in China also has a heating and stirring device, it is easy to have problems such as insufficient heating and insufficient stirring. When used for single-nozzle color printing, it is easy to cause color difference and color unevenness. Therefore, it is particularly necessary to improve the nozzle device of the existing 3D printer. Utility Model Content

[0003] Aiming at the technical problems of insufficient heating and insufficient stirring in the prior art 3D printers, a colorful 3D printer nozzle device is provided.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A colorful 3D printer nozzle device comprises a nozzle housing for accommodating printing materials, a cover body arranged on the top of the nozzle housing, a stirring component, a heating component and a nozzle; one end of the heating component is fixed to the bottom surface in the nozzle housing, and a stirring zone is formed between the heating component and the nozzle housing; the stirring component is arranged in the stirring zone; the outer surface of the lower part of the nozzle housing is provided with a plurality of feeding pipes connected to the stirring zone; a feeding channel is provided in the middle part of the heating component; a through hole is provided at the bottom of the nozzle housing; the nozzle is installed at the bottom of the nozzle housing, and can be connected with the feeding channel through the through hole so that the printing material in the stirring zone can enter the nozzle from the top of the heating component.

[0006] Preferably, the stirring assembly includes an iron core outer ring as a stator and a strong magnetic stirring ring as a rotor; the iron core outer ring is fixed on the outer side wall of the upper part of the nozzle shell; the strong magnetic stirring ring is arranged in the stirring zone, and the strong magnetic stirring ring is rotatably connected to the cover body.

[0007] Preferably, the heating assembly comprises a fixed column and a plurality of heating tubes; the center of the fixed column is provided with the material transfer channel along its length direction; the fixed column is provided with a plurality of heating tube placement grooves at equal intervals on the circumference of the material transfer channel; one end of a plurality of the heating tubes are respectively installed in the heating tube placement grooves, and the other end extends out of the fixed column; electrical connecting wires are arranged on the ends of the plurality of heating tubes extending out of the fixed column; the cover body is provided with a plurality of circular holes; the electrical connecting wires can pass through the circular holes and extend out of the cover body.

[0008] Preferably, a truncated cone is provided on the inner side of the cover body; the truncated cone is provided with a groove along its circumferential direction; a circular ring that can rotate relative to the groove is provided in the groove; the upper end of the strong magnetic stirring ring is fixed to the circular ring so that the strong magnetic stirring ring can rotate relative to the cover body under the magnetic force of the outer ring of the iron core.

[0009] Preferably, a hollow protrusion is provided at the bottom of the fixed column; the material transfer channel is connected to the hollow part of the protrusion; a fixing groove adapted to the protrusion is provided at the bottom of the nozzle housing; the protrusion can abut or be fixedly connected to the fixing groove.

[0010] Preferably, a wire connecting column is provided on the top of the outer ring of the core.

[0011] Preferably, a plurality of stirring teeth are arranged at equal intervals along the circumference of the lower end of the strong magnetic stirring ring.

[0012] Preferably, the number of the feed pipes is four; the four feed pipes are distributed at equal intervals along the circumferential direction of the shell nozzle.

[0013] Preferably, the four feed pipes are respectively installed with solenoid valves; and the four feed pipes are respectively connected to the material storage boxes of the printer.

[0014] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0015] (1) The utility model provides a multi-color 3D printer nozzle device, which is provided with a heating component in the nozzle housing, a material transfer channel in the heating component, a stirring component in the stirring zone formed between the heating device and the nozzle housing, and a feed pipe at the lower part of the nozzle housing. The printing material enters the nozzle housing from the lower part of the nozzle housing, is heated and melted by the heating component, and is stirred by the stirring component to fully mix the printing material. The material is discharged to the nozzle through the material channel at the top of the heating component. The utility model can form a recoil discharge. The printing material enters the nozzle housing from the lower part of the nozzle housing and moves to the upper part, and then moves to the nozzle through the material transfer channel in the heating component. This structure can ensure that the printing material is fully heated and stirred, and can form printing materials with uniform and stable colors, which is highly practical.

[0016] (2) The stirring assembly of the utility model is composed of an iron core outer ring as a stator and a strong magnetic stirring ring as a rotor. When the iron core outer ring is energized, a strong magnetic field is generated by the iron core outer ring. The strong magnetic stirring ring can rotate under the action of the magnetic field and thus stir the printed material in the stirring zone evenly.

[0017] (3) The heating assembly of the utility model includes a fixed column and a heating tube; the fixed column is provided with a material passing channel; the heating tube is fixed to the peripheral side of the fixed column. A stirring zone is formed between the fixed column and the nozzle housing. When the heating tube is powered on, it can not only heat and melt the printing material in the stirring zone, but also heat the printing material in the material passing channel, thereby ensuring that the printing material has extremely high stability after melting and stirring, and has a good printing effect.

[0018] (4) The nozzle housing of the utility model is provided with four feed pipes on the outside, which can be used to customize the color according to the different proportions of the consumables of yellow, green, red and white. Under the operation of the heating component and the stirring component, a uniform and stable printing material can be formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a multi-color 3D printer nozzle device of the utility model;

[0020] Figure 2 yes Figure 1 A cross-sectional view of

[0021] Figure 3 This is a structural disassembly diagram of a multi-color 3D printer nozzle device of the utility model;

[0022] Figure 4 yes Figure 3 A cross-sectional view of

[0023] Figure 5 yes Figure 3 A local enlarged view of point A;

[0024] In the accompanying drawings, 1. nozzle housing; 11. through hole; 12. fixing groove; 2. cover body; 21. round hole; 22. truncated cone; 23. groove; 24. circular ring; 3. stirring assembly; 31. iron core outer ring; 311. wire connecting column; 32. strong magnetic stirring ring; 322. stirring teeth; 4. heating assembly; 41. material passing channel; 42. fixing column; 421. raised part; 43. heating tube; 44. heating tube placement groove; 45. electrical connecting line; 5. nozzle; 6. stirring area; 7. feeding pipe. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solution of the utility model patent in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] See also Figure 1-5The embodiment provides a colorful 3D printer nozzle device, comprising a nozzle housing 1 for accommodating printing materials, a cover 2 covered on the top of the nozzle housing 1, a stirring component 3, a heating component 4 and a nozzle 5; one end of the heating component 4 is fixed to the bottom of the nozzle housing 1, and a stirring zone 6 is formed between the heating component 4 and the nozzle housing 1; further, the heating component 4 is fixed at the center of the nozzle housing 1, and the surrounding side of the heating component 4 in the nozzle housing 1 is the stirring zone 6; the stirring component 3 is arranged in the stirring zone 6; the outer surface of the lower part of the nozzle housing 1 is provided with a plurality of feeding pipes 7 connected to the stirring zone 6; a feeding channel 41 is provided in the middle of the heating component 4; a through hole 11 is provided at the bottom of the nozzle housing 1; the nozzle 5 is installed at the bottom of the nozzle housing 1, and can be connected with the feeding channel 41 through the through hole 11 so that the printing material in the stirring zone 6 can enter the nozzle 5 from the top of the heating component 4. In this embodiment, according to different color requirements, the printing materials of different colors can enter the nozzle housing 11 from the feed pipe 77 according to the feed ratio, and are heated and melted by the heating component 4, and then mixed and stirred by the stirring component 3. The mixed printing materials are discharged through backflushing and ejected from the nozzle. The whole process can form stable and uniform printing materials.

[0029] Preferably, in this embodiment, the stirring assembly 3 includes an iron core outer ring 31 as a stator and a strong magnetic stirring ring 32 as a rotor; the iron core outer ring 31 is fixed to the outer side wall of the upper part of the nozzle housing 1; the strong magnetic stirring ring 32 is arranged in the stirring area 6, and the strong magnetic stirring ring 32 is rotatably connected to the cover body 2. When the iron core outer ring 31 of the stator is energized, the strong magnetic stirring ring 32 as a rotor can rotate relative to the cover body 2, so that the strong magnetic stirring ring 32 can fully stir the printing material in the stirring area 6.

[0030] In this embodiment, in order to achieve sufficient heating and stirring of the printing material, as a preferred embodiment, the heating assembly 4 includes a fixed column 42 and a plurality of heating tubes 43; the center of the fixed column 42 is provided with the material transfer channel 41 along its length direction; the fixed column 42 is provided with a plurality of heating tube placement grooves 44 at equal intervals on the circumference of the material transfer channel 41; one end of the plurality of heating tubes 43 is respectively installed in the heating tube placement groove 44, and the other end extends out of the fixed column 42; an electrical connection line 45 is provided on one end of the plurality of heating tubes 43 extending out of the fixed column 42; the cover body 2 is provided with a plurality of circular holes 21; the electrical connection line 45 can pass through the circular holes 21 and extend out of the cover body 2. The entire heating device can not only heat the printing material in the stirring zone 6, but also heat the material transfer channel 41, so as to ensure that the printing material is fully heated and melted.

[0031] See also Figure 4 As shown, as a preferred embodiment, a truncated cone 22 is provided on the inner side of the cover 2; a groove 23 is provided on the truncated cone 22 along its circumferential direction; a ring 24 that can rotate relative to the truncated cone 23 is provided in the groove 23; the upper end of the strong magnetic stirring ring 32 is fixed to the ring 24 so that the strong magnetic stirring ring 32 can rotate relative to the cover 2 under the magnetic force of the iron core outer ring 31. Under this structure, the strong magnetic stirring ring 32 can rotate relative to the cover 2 when the iron core outer ring 31 is powered, so that the printing material in the stirring area 6 can be stirred.

[0032] In order to fix the heating assembly 4 in the nozzle housing 1, in this embodiment, as a preference, the bottom of the fixing column 42 is provided with a hollow protrusion 421; the material transfer channel 41 is connected to the hollow part of the protrusion 421; the bottom of the nozzle housing 1 is provided with a fixing groove 12 adapted to the protrusion 421; the protrusion 421 can abut against the fixing groove 12, of course, the protrusion 421 can also be detachably installed in the fixing groove 12, for example, the protrusion 421 is set to be cylindrical and the outer surface is provided with an external thread, and the inner wall of the fixing groove 12 is provided with an internal thread. Under this design, the fixing column 42 can be aligned and installed in the fixing groove 12 by threaded connection; the nozzle 5 can be connected to the fixing groove 12 and then to the material transfer channel 41. In this embodiment, by installing the protrusion 421 of the fixing column 42 into the fixing groove 12, the fixing column 42 and the heating tube 43 can be fixed in the nozzle housing 1 together. At the same time, the installation method of the protrusion 421 and the fixing groove 12 can ensure that the material transfer channel 41 is aligned and connected with the nozzle.

[0033] Preferably, a wire connection column 311 is provided on the top of the core outer ring 31. The wire connection column 311 can be connected to a wire to energize the core outer ring 31, so that the strong magnetic stirring ring 32 can rotate and stir under the action of the magnetic field.

[0034] Preferably, a plurality of stirring teeth 322 are arranged at equal intervals along the circumference of the lower end of the strong magnetic stirring ring 32. The stirring teeth 322 are close to but not in contact with the bottom of the nozzle housing 1, and can fully stir the printing material in the stirring area 6.

[0035] In the present embodiment, as a preference, the number of the feed pipes 77 is four; the four feed pipes 7 are evenly spaced along the circumferential direction of the shell nozzle. Solenoid valves are respectively installed on the four feed pipes 7; the four feed pipes 7 are respectively connected to the storage boxes of the printer. The storage boxes store printing consumables of four colors, yellow, green, red and white, respectively. During the printing process, the printer can respectively feed the printing consumables of four colors, yellow, green, red and white, through the four feed pipes 7 according to the setting of the control system. The printer control system can accurately control the feed amount of each color through the solenoid valve, so that bright and rich colors can be formed as needed. In the present embodiment, the feed amount is controlled by the solenoid valve, and the material can be discharged after heating, melting and stirring after feeding. The discharge amount is controlled by controlling the feed amount, and there is no need to set a discharge valve on the nozzle.

[0036] The working process and principle of this new type:

[0037] When the novel colorful 3D printer nozzle device is installed in the 3D printer, the heating component 4 and the stirring component 3 need to be connected to the wires on the 3D printer. During printing, according to the different printing color requirements, the feed amount of the four feed pipes 7 can be accurately controlled according to the feed ratio of the printing materials of different colors through the 3D printer control system. The heating component 4 under power-on can heat and melt the printing material, and the stirring component 3 after power-on can also stir. The stirring component 3 mixes and stirs the materials, and the printing material is ejected from the nozzle after recoil discharge to complete the printing. A stable and uniform printing material can be formed in the whole process. Compared with other non-recoil discharge printer nozzle devices, the printing material of the utility model enters from the bottom of the nozzle housing 1, and during the heating and stirring process, it moves to the top of the material passage 41 and then discharges, so there is no situation where the stirring and heating are insufficient, that is, the material is discharged. Therefore, the utility model can achieve sufficient heating and melting of the printing material, sufficient stirring, and can form a uniform and stable printing material, which is highly practical.

[0038] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A colorful 3D printer nozzle device, characterized in that: The invention comprises a nozzle housing (1) for accommodating printing materials, a cover (2) arranged on the top of the nozzle housing (1), a stirring component (3), a heating component (4) and a nozzle (5); one end of the heating component (4) is fixed to the bottom surface of the nozzle housing (1), and a stirring zone (6) is formed between the heating component (4) and the nozzle housing (1); the stirring component (3) is arranged in the stirring zone (6); the outer surface of the lower part of the nozzle housing (1) is provided with a plurality of feeding pipes (7) connected to the stirring zone (6); a feeding channel (41) is provided in the middle of the heating component (4); a through hole (11) is provided at the bottom of the nozzle housing (1); the nozzle (5) is installed at the bottom of the nozzle housing (1), and can be connected with the feeding channel (41) through the through hole (11) so that the printing material in the stirring zone (6) can enter the nozzle (5) from the top of the heating component (4).

2. A multi-color 3D printer nozzle device as claimed in claim 1, characterized in that: The stirring assembly (3) comprises an iron core outer ring (31) as a stator and a strong magnetic stirring ring (32) as a rotor; the iron core outer ring (31) is fixed on the outer side wall of the upper part of the nozzle housing (1); the strong magnetic stirring ring (32) is arranged in the stirring area (6), and the strong magnetic stirring ring (32) is rotatably connected to the cover body (2).

3. A multi-color 3D printer nozzle device as claimed in claim 1, characterized in that: The heating assembly (4) comprises a fixed column (42) and a plurality of heating tubes (43); the center of the fixed column (42) is provided with the material transfer channel (41) along its length direction; the fixed column (42) is provided with a plurality of heating tube placement grooves (44) at equal intervals on the circumference of the material transfer channel (41); one end of the plurality of heating tubes (43) is respectively installed in the heating tube placement groove (44), and the other end extends out of the fixed column (42); an electrical connection line (45) is provided on one end of the plurality of heating tubes (43) extending out of the fixed column (42); the cover body (2) is provided with a plurality of circular holes (21); the electrical connection line (45) can pass through the circular holes (21) and extend out of the cover body (2).

4. A multi-color 3D printer nozzle device as claimed in claim 2, characterized in that: A truncated cone (22) is provided on the inner side of the cover body (2); a groove (23) is provided on the truncated cone (22) along its circumferential direction; a circular ring (24) is provided in the groove (23) and can rotate relative to the groove; the upper end of the strong magnetic stirring ring (32) is fixed to the circular ring (24) so ​​that the strong magnetic stirring ring (32) can rotate relative to the cover body (2) under the magnetic force of the iron core outer ring (31).

5. A multi-color 3D printer nozzle device as claimed in claim 3, characterized in that: The bottom of the fixing column (42) is provided with a hollow protrusion (421); the material transfer channel (41) is connected to the hollow part of the protrusion (421); the bottom of the nozzle housing (1) is provided with a fixing groove (12) adapted to the protrusion (421); the protrusion (421) can abut against or be fixedly connected to the fixing groove (12).

6. A multi-color 3D printer nozzle device as claimed in claim 2, characterized in that: A wire connection column (311) is provided on the top of the iron core outer ring (31).

7. A multi-color 3D printer nozzle device as claimed in claim 2, characterized in that: The lower end of the strong magnetic stirring ring (32) is provided with a plurality of stirring teeth (322) at equal intervals along its circumference.

8. A multi-color 3D printer nozzle device as claimed in claim 1, characterized in that: The number of the feed pipes (7) is four; the four feed pipes (7) are distributed at equal intervals along the circumferential direction of the shell nozzle.

9. A multi-color 3D printer nozzle device as claimed in claim 8, characterized in that: Solenoid valves are respectively installed on the four feed pipes (7); and the four feed pipes (7) are respectively connected to a material storage box of the printer.

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