3D printer using filaments of multiple colors

Abstract

The present invention relates to the technical field of 3D printing devices, and relates in particular to a 3D printer using filaments of multiple colors. The printer comprises a three-coordinate movement platform, a movable base, a switching assembly, a discharging mechanism, and multiple feed assemblies. The movable base is movably mounted on the three-coordinate movement platform. The multiple feed assemblies are fixedly mounted on the movable base. The switching assembly comprises a first housing, a switching part, and a first motor. The switching part is located in a first cavity, and one end of an output shaft of the first motor is in transmission connection with the switching part. A filament on each feed assembly is connected to the switching part by means of a first through-hole. An upper end of the discharging mechanism is fixedly connected to a first connecting plate, and the interior of the discharging mechanism is in communication with the interior of the switching part. Multiple second supporting frames are disposed on the movable base, so that the printer can directly use filaments of multiple colors to perform printing.

Description

A 3D printer using multi-color filaments Technical Field

[0001] The present invention belongs to the technical field of 3D printing equipment, and in particular relates to a 3D printer using multi-color filaments. Background Art

[0002] A 3D printer, also known as a three-dimensional printer, is a machine that uses a cumulative manufacturing technology, that is, a rapid prototyping technology. It is based on a digital model file and uses special wax or plastic as adhesive materials to create three-dimensional objects by printing layer by layer of adhesive materials. Technical issues

[0003] Traditional 3D printers use monochrome filament to print 3D models. To accurately reflect the features of each part of the 3D model, the 3D model needs to be colored by hand spray painting. This manual coloring method is inefficient and prone to positional deviations when marking features on the 3D model, making it unsuitable for large-scale production. To address this problem, a new type of 3D printer with a rotating mechanism has emerged on the market. Multiple print heads are connected to the underside of the rotating mechanism. Different print heads deliver different colorants through feed tubes, and multi-color printing can be achieved by switching the rotating mechanism. However, multiple print heads are expensive, and the rotating mechanism must be switched each time a different color layer is printed. This can easily cause the multiple feed tubes to become entangled, resulting in printing failures. Technical Solutions

[0004] In order to solve the above problems, the present invention provides a 3D printer using multi-color filaments, comprising a three-coordinate moving platform, a moving seat, a conversion component, a discharge mechanism and several groups of feeding components;

[0005] The movable seat is movably mounted on the three-coordinate movable platform; a plurality of groups of the feeding components are fixedly mounted on the movable seat;

[0006] The conversion assembly includes a first housing, a conversion portion and a first motor;

[0007] The first shell is cylindrical and has a first cavity therein; the movable base is further provided with a first through hole; one end of the first shell is fixedly connected to the first through hole, and the first cavity is in communication with the first through hole; a first connecting plate is fixedly mounted on the other end of the first shell, and one end of the body of the first motor is fixedly mounted on the inner wall of the first connecting plate;

[0008] The conversion part is located in the first cavity, and one end of the output shaft of the first motor is transmission-connected to the conversion part; the wire on the feeding assembly is connected to the conversion part through the first through hole; the upper end of the discharging mechanism is fixedly connected to the first connecting plate, and the interior of the discharging mechanism is connected to the interior of the conversion part.

[0009] Furthermore, the conversion portion includes several groups of inlet terminals, a turntable and several groups of outlet terminals;

[0010] One end of the line inlet terminal is connected to the first through hole, and the other end of the line inlet terminal is fixedly connected to one side of the turntable;

[0011] One end of the outlet end is fixedly mounted on the other side of the turntable, and the other end of the outlet end is connected to the upper end of the throat pipe of the discharging mechanism;

[0012] The outlet end is communicated with the inlet end, and the center axis of the turntable is transmission-connected to one end of the output shaft of the first motor.

[0013] Furthermore, the line inlet end includes a second connecting plate, a third connecting plate and a first rotating wheel;

[0014] One end of the second connecting plate is fixedly mounted on the turntable, and a first fixing tube is fixedly mounted on one end of the second connecting plate;

[0015] A first wire support is fixedly mounted on the other end of the second connecting plate, and the first wire support is an arc-shaped groove;

[0016] The two ends of several groups of the first rotating wheels are rotatably installed between the second connecting plate and the third connecting plate, and are located on both sides of the first wire support; several groups of second motors are also provided on the third connecting plate, and the second motors are transmission-connected to the first rotating wheels.

[0017] Furthermore, the outlet terminal includes a fourth connecting plate, a second rotating wheel, a fifth connecting plate and a first cylinder;

[0018] One end of the fourth connecting plate is fixedly connected to the rotating disk, and a second wire support is fixedly installed on the fourth connecting plate, and the second wire support is an arc-shaped groove;

[0019] The two ends of several groups of the second rotating wheels are rotatably installed between the fourth connecting plate and the fifth connecting plate, and are located on both sides of the second wire support; several groups of third motors are also provided on the fifth connecting plate, and the third motors are transmission-connected to the second rotating wheels.

[0020] Furthermore, a sixth connecting plate is fixedly installed on the upper end of the third motor, and one end of the first support frame is fixedly installed on the end of the sixth connecting plate away from the turntable, one end of the body of the first cylinder is fixedly connected to the other end of the first support frame, and one end of the output shaft of the first cylinder is perpendicular to the fourth connecting plate.

[0021] Furthermore, the first rotating wheel includes a rotating shaft and gear teeth;

[0022] The rotating shaft is cylindrical, one end of the rotating shaft is transmission-connected to the second motor, and the other end is rotationally connected to the second connecting plate; the gear teeth are arranged in the middle section of the rotating shaft, and a plurality of groups of protrusions are also arranged on the gear teeth, and the protrusions are conical.

[0023] Furthermore, the first connecting plate is in the shape of a circular plate, and a first card slot is provided on the first connecting plate, and the central axis of the first card slot does not coincide with the central axis of the first connecting plate; the upper end of the discharging mechanism is fixedly installed in the first card slot.

[0024] Furthermore, the discharging mechanism includes a heat dissipation pipe, a throat pipe, a heating block and a nozzle;

[0025] One end of the throat pipe is connected to the second wire support; the upper end of the heat dissipation pipe is fixedly installed in the first slot;

[0026] The other end of the throat is fixedly connected to the heating block and the nozzle respectively; the nozzle is located below the heating block; the heat dissipation pipe is fixedly installed on the throat and is located above the heating block.

[0027] Furthermore, the feeding assembly includes a second support frame and a third support frame;

[0028] The second support frame is fixedly mounted on one end of the movable base, and a wire disc is rotatably mounted on the second support frame, and the wire disc is wound with wire;

[0029] One end of the third support frame is fixedly connected to the movable seat, and the other end of the third support frame is provided with a third wire support, the third wire support is an arc-shaped groove, and a second fixed tube is also fixedly installed on the third wire support.

[0030] Furthermore, a first mounting block is fixedly mounted on one end of the output shaft of the first cylinder, and a blade is fixedly mounted on one end of the first mounting block away from the first support frame. Beneficial effects

[0031] The beneficial effects of the present invention are:

[0032] 1. By arranging several groups of second support frames on the movable base, several groups of wire discs are rotatably mounted on the several groups of second support frames. The wires wound on each group of wire discs are of different colors. Compared with traditional monochrome 3D printers, multi-color wires can be directly used for printing.

[0033] 2. By fixing the second fixed tube on the third wire support, wires of different colors have independent feeding channels, thus avoiding the entanglement of wires of different colors.

[0034] 3. By starting the first motor and rotating the turntable, several groups of the outlet terminals can be connected to the throat pipes respectively.

[0035] 4. By setting the second motor and the third motor, the first rotating wheel and the second rotating wheel provide power for the wire to enter the throat.

[0036] 5. A first mounting block is fixedly mounted on the output shaft of the first cylinder. A blade is fixedly mounted on one end of the first mounting block away from the first support frame. The blade is used to cut the wire so that the next group of wires of different colors can enter the throat.

[0037] 6. The gear teeth are located in the middle section of the shaft, gripping the wire and using friction to move it to the next section. The gear teeth are also equipped with several sets of conical protrusions, which increase the surface roughness of the gear teeth, further enhancing the friction between the gear teeth and the wire, making the wire more stable during transmission.

[0038] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] FIG1 shows a schematic structural diagram of a 3D printer according to an embodiment of the present invention;

[0041] FIG2 is a schematic structural diagram of a feeding assembly from a first perspective according to an embodiment of the present invention;

[0042] FIG3 is a schematic structural diagram of a feeding assembly from a second perspective according to an embodiment of the present invention;

[0043] FIG4 shows a schematic structural diagram of a conversion assembly according to an embodiment of the present invention;

[0044] FIG5 shows a schematic structural diagram of a first connecting plate according to an embodiment of the present invention;

[0045] FIG6 is a schematic structural diagram of a first viewing angle of a conversion portion according to an embodiment of the present invention;

[0046] FIG7 is a schematic structural diagram of a second viewing angle of a conversion portion according to an embodiment of the present invention;

[0047] FIG8 shows a schematic structural diagram of an incoming line terminal according to an embodiment of the present invention;

[0048] FIG9 shows a schematic structural diagram of an outlet terminal according to an embodiment of the present invention;

[0049] FIG10 shows a schematic structural diagram of a first rotating wheel according to an embodiment of the present invention;

[0050] FIG11 shows a schematic cross-sectional view of a discharge mechanism according to an embodiment of the present invention;

[0051] FIG12 shows an exploded view of the discharge mechanism according to an embodiment of the present invention.

[0052] In the figure: 1. Three-coordinate moving platform; 2. Moving base; 3. Conversion assembly; 31. First housing; 32. Conversion unit; 321. Wire inlet; 3211. Second connecting plate; 3212. First fixing tube; 3213. Second motor; 3214. Third connecting plate; 3215. First rotating wheel; 32151. Rotating shaft; 32152. Gear teeth; 32153. Protrusion; 3216. First wire support; 322. Rotating disk; 323. Wire outlet; 3231. Fourth connecting plate; 3232. Second wire support; 3233. Second rotating wheel; 3234, fifth connecting plate; 3235, third motor; 3236, sixth connecting plate; 3237, first support frame; 3238, first cylinder; 3239, first mounting block; 32310, blade; 33, first motor; 34, first connecting plate; 341, first slot; 4, discharge mechanism; 41, heat pipe; 42, throat; 43, heating block; 44, nozzle; 5, feeding assembly; 51, second support frame; 52, wire reel; 53, third support frame; 54, second fixing tube; 55, wire; 56, third wire support. Modes for Carrying Out the Invention

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0054] An embodiment of the present invention provides a 3D printer using multi-color filaments, including a three-coordinate moving platform 1, a moving base 2, a conversion component 3, a discharge mechanism 4 and a feeding component 5, as shown in FIG1 .

[0055] The movable seat 2 is movably arranged on the three-coordinate movable platform 1, and the movable seat 2 can move in the X, Y and Z axis directions on the three-coordinate movable platform 1. The X axis, Y axis and Z axis are perpendicular to each other, wherein the X axis and Y axis are arranged in the horizontal direction, and the Z axis is arranged in the vertical direction.

[0056] The movable base 2 is further provided with a first through hole, and the upper end of the conversion component 3 is fixedly installed in the first through hole, and the conversion component 3 is communicated with the first through hole.

[0057] Several groups of the feeding components 5 are fixedly mounted on the movable seat 2 , and the wires on the feeding components 5 are connected to the conversion component 3 through the first through hole.

[0058] The feeding assembly 5 includes a second support frame 51 and a third support frame 53 , as shown in FIG2 and FIG3 .

[0059] The second support frame 51 is fixedly mounted on one end of the movable base 2, and a wire disk 52 is rotatably mounted on the second support frame 5, and a wire 55 is wound on the wire disk 52; by arranging several groups of second support frames 51 on the movable base, several groups of second support frames 51 are respectively rotatably mounted with several groups of wire disks 52, and the wire wound on each group of the wire disks 52 is of different colors. Compared with traditional monochrome 3D printers, multi-color wires can be directly used for printing.

[0060] One end of the third support frame 53 is fixedly connected to the movable seat 2, and the other end of the third support frame 53 is provided with a third wire support 56, and the third wire support 56 is an arc-shaped groove, and the third wire support 56 is used to guide the wire 55; the third wire support 56 is also fixedly installed with a second fixed tube 54, and the second fixed tube 54 is used to clamp the wire 55 and guide it, so that wires of different colors have independent feeding channels, thereby avoiding the situation where wires of different colors are entangled.

[0061] The conversion assembly 3 includes a first housing 31 , a conversion portion 32 and a first motor 33 , as shown in FIG4 .

[0062] The first housing 31 is cylindrical and defines a first cavity. One end of the first housing 31 is fixedly connected to the first through hole, and the first cavity communicates with the first through hole. A first connecting plate 34 is fixedly mounted on the other end of the first housing 31, and one end of the body of the first motor 33 is fixedly mounted on the inner wall of the first connecting plate 34.

[0063] The conversion part 32 is located in the first cavity, and one end of the output shaft of the first motor 33 is transmission-connected to the conversion part 32 .

[0064] The first connecting plate 34 is in the shape of a circular plate, as shown in FIG5 .

[0065] A first slot 341 is provided on the first connecting plate 34 , and the central axis of the first slot 341 does not coincide with the central axis of the first connecting plate 34 ; the upper end of the heat dissipation pipe of the discharging mechanism 4 is fixedly engaged in the first slot 341 .

[0066] The conversion portion 32 includes several groups of inlet terminals 321 , a rotary disk 322 and several groups of outlet terminals 323 , as shown in FIG6 and FIG7 , for example.

[0067] One end of the wire inlet end 321 is communicated with the first through hole, the other end of the wire inlet end 321 is fixedly connected to one side of the turntable 322, one end of the wire outlet end 323 is fixedly installed on the other side of the turntable 322, and the other end of the wire outlet end 323 is communicated with the upper end of the throat 42 of the discharging mechanism 4; the wire outlet end 323 is communicated with the wire inlet end 321, and the central axis of the turntable 322 is transmission-connected to one end of the output shaft of the first motor 33; by starting the first motor 33 and rotating the turntable 322, several groups of the wire outlet ends 323 can be respectively communicated with the throat 42.

[0068] The wire inlet end 321 is used to transport the wire 55 into the wire outlet end 323 , and the wire outlet end 323 is used to transport the wire 55 into the throat 42 of the discharging mechanism 4 .

[0069] The line inlet end 321 includes a second connecting plate 3211 , a third connecting plate 3214 and a first rotating wheel 3215 , as shown in FIG8 .

[0070] One end of the second connecting plate 3211 is fixedly mounted on the turntable 322 . A first fixing tube 3212 is fixedly mounted on one end of the second connecting plate 3211 . The first fixing tube 3212 is used to clamp the wire 55 and guide the wire 55 .

[0071] A first wire support 3216 is fixedly mounted on the other end of the second connecting plate 3211 . The first wire support 3216 is an arc-shaped groove. The first wire support 3216 is used to guide the wire 55 .

[0072] The two ends of several groups of the first rotating wheels 3215 are rotatably installed between the second connecting plate 3211 and the third connecting plate 3214, and are located on both sides of the first wire support 3216; several groups of second motors 3213 are also provided on the third connecting plate 3214, and the second motors 3213 are transmission-connected to the first rotating wheels 3215; the first rotating wheels 3215 provide power for the wire in the first wire support 3216, so that the wire 55 passes through the first fixed tube 3212 and enters the wire outlet 323.

[0073] The outlet end 323 includes a fourth connecting plate 3231 , a second rotating wheel 3233 , a fifth connecting plate 3234 and a first cylinder 3238 , as shown in FIG. 9 .

[0074] One end of the fourth connecting plate 3231 is fixedly connected to the turntable 322 . A second wire support 3232 is fixedly mounted on the fourth connecting plate 3231 . The second wire support 3232 is an arc-shaped groove and is used to guide the wire 55 .

[0075] The two ends of several groups of the second rotating wheels 3233 are rotatably installed between the fourth connecting plate 3231 and the fifth connecting plate 3234, and are located on both sides of the second wire support 3232; several groups of third motors 3235 are also provided on the fifth connecting plate 3234, and the third motors 3235 are transmission-connected to the second rotating wheels 3233; the second rotating wheels 3233 provide power for the wire 55 to enter the throat 42 of the discharging mechanism 4.

[0076] A sixth connecting plate 3236 is fixedly mounted on the upper end of the third motor 3235. One end of the first support frame 3237 is fixedly mounted on the end of the sixth connecting plate 3236 away from the turntable 322. One end of the main body of the first cylinder 3238 is fixedly connected to the other end of the first support frame 3237. One end of the output shaft of the first cylinder 3238 is perpendicular to the fourth connecting plate 3231. A first mounting block 3239 is also fixedly mounted on one end of the output shaft of the first cylinder 3238. A blade 32310 is fixedly mounted on the end of the first mounting block 3239 away from the first support frame 3237. The blade 32310 is used to cut the wire 55 in preparation for switching between different colored wires, allowing the next set of wires of different colors to enter the throat 42 of the discharging mechanism 4. By activating the first motor 33 and rotating the turntable 322, the next set of wire outlets 323 are connected to the upper end of the throat 42 of the discharging mechanism 4.

[0077] The first rotating wheel 3215 includes a rotating shaft 32151 and gear teeth 32152 , as shown in FIG10 .

[0078] The rotating shaft 32151 is cylindrical, with one end of the rotating shaft 32151 being transmission-connected to the second motor 3213 and the other end being rotationally connected to the second connecting plate 3211. The gear teeth 32152 are disposed in the middle section of the rotating shaft 32151. These gear teeth 32152 are used to grip the wire 55 and utilize friction to move it to the next area. The gear teeth 32152 are also provided with several groups of protrusions 32153. These protrusions 32153 are conical in shape, increasing the surface roughness of the gear teeth 32152 and further enhancing the friction between the gear teeth 32152 and the wire 55, further stabilizing the transmission of the wire 55. The second rotating wheel 3233 has the same structure and function as the first rotating wheel 3215.

[0079] The discharging mechanism 4 includes a heat dissipation pipe 41 , a throat pipe 42 , a heating block 43 and a nozzle 44 , as shown in FIG. 11 and FIG. 12 .

[0080] One end of the throat pipe 42 is connected to the second wire support 3232; the upper end of the heat dissipation pipe 41 is fixedly installed in the first card slot 341;

[0081] The other end of the throat pipe 42 is fixedly connected to the heating block 43 and the nozzle 44 respectively; the nozzle 44 is located below the heating block 43; the heat dissipation pipe 41 is fixedly installed on the throat pipe 42 and is located above the heating block 43; the throat pipe 42 is used to store the raw materials to be heated, the heating block 43 is used to heat the raw materials for belt processing, the nozzle 44 is used to eject the heated and melted raw materials, and the heat dissipation pipe 41 is used to prevent the heated and melted raw materials from flowing back and causing the feed pipe to be blocked.

[0082] The working principle of the 3D printer using multi-color filaments proposed by the present invention is as follows:

[0083] By starting the second motor 3213, the first rotating wheel 3215 drives the wire 55 from the first fixed tube 3212 into the second wire holder 3232; then by starting the third motor 3235, the second rotating wheel 3233 drives the wire 55 into the throat 42; when the 3D printer is about to switch the wire color, the first cylinder 3238 is started, and the wire 55 in the second wire holder 3232 is cut by the blade 32310; then the first motor 33 is started to drive the turntable 322 to rotate, so that the next group of the wire outlet ends 323 are connected to the throat 42, completing the change of the wire color, making the feature identification of the 3D model simpler, with a high degree of automation, and suitable for large-scale production.

[0084] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A 3D printer using multi-color filaments, Features: It comprises a three-coordinate moving platform (1), a moving seat (2), a conversion component (3), a material discharging mechanism (4) and a plurality of groups of material feeding components (5); The movable seat (2) is movably mounted on the three-coordinate movable platform (1); a plurality of groups of the feeding components (5) are fixedly mounted on the movable seat (2); The conversion assembly (3) comprises a first housing (31), a conversion portion (32) and a first motor (33); The first shell (31) is cylindrical, and a first cavity is provided in the first shell (31); a first through hole is also provided on the movable seat (2); one end of the first shell (31) is fixedly connected to the first through hole, and the first cavity is communicated with the first through hole; a first connecting plate (34) is fixedly mounted on the other end of the first shell (31), and one end of the body of the first motor (33) is fixedly mounted on the inner wall of the first connecting plate (34); The conversion part (32) is located in the first cavity, and one end of the output shaft of the first motor (33) is drivingly connected to the conversion part (32); the wire on the feeding assembly (5) is connected to the conversion part (32) through the first through hole; the upper end of the discharge mechanism (4) is fixedly connected to the first connecting plate (34), and the interior of the discharge mechanism (4) is connected to the interior of the conversion part (32).

2. A 3D printer using multi-color wire according to claim 1, Features: The conversion part (32) comprises a plurality of groups of inlet terminals (321), a rotating disk (322) and a plurality of groups of outlet terminals (323); One end of the line inlet end (321) is in communication with the first through hole, and the other end of the line inlet end (321) is fixedly connected to one side of the rotating disk (322); One end of the outlet end (323) is fixedly mounted on the other side of the rotating disk (322), and the other end of the outlet end (323) is connected to the upper end of the throat pipe (42) of the discharging mechanism (4); The outlet terminal (323) is in communication with the inlet terminal (321), and the central axis of the rotating disk (322) is drivingly connected to one end of the output shaft of the first motor (33).

3. A 3D printer using multi-color wire according to claim 2, Features: The line inlet end (321) comprises a second connecting plate (3211), a third connecting plate (3214) and a first rotating wheel (3215); One end of the second connecting plate (3211) is fixedly mounted on the rotating disk (322), and a first fixing tube (3212) is fixedly mounted on one end of the second connecting plate (3211); A first wire support (3216) is fixedly mounted on the other end of the second connecting plate (3211), and the first wire support (3216) is an arc-shaped groove; Two ends of a plurality of groups of the first rotating wheels (3215) are rotatably mounted between the second connecting plate (3211) and the third connecting plate (3214), and are located on both sides of the first wire support (3216); a plurality of groups of second motors (3213) are also arranged on the third connecting plate (3214), and the second motors (3213) are transmission-connected to the first rotating wheels (3215).

4. A 3D printer using multi-color wire according to claim 3, Features: The outlet terminal (323) comprises a fourth connecting plate (3231), a second rotating wheel (3233), a fifth connecting plate (3234) and a first cylinder (3238); One end of the fourth connecting plate (3231) is fixedly connected to the rotating disk (322), and a second wire support (3232) is fixedly mounted on the fourth connecting plate (3231), wherein the second wire support (3232) is an arc-shaped groove; Two ends of a plurality of groups of the second rotating wheels (3233) are rotatably mounted between the fourth connecting plate (3231) and the fifth connecting plate (3234), and are located on both sides of the second wire support (3232); a plurality of groups of third motors (3235) are also arranged on the fifth connecting plate (3234), and the third motors (3235) are transmission-connected to the second rotating wheels (3233).

5. A 3D printer using multi-color wire according to claim 4, Features: A sixth connecting plate (3236) is also fixedly mounted on the upper end of the third motor (3235); one end of the sixth connecting plate (3236) away from the turntable (322) is fixedly mounted with one end of a first supporting frame (3237); one end of the body of the first cylinder (3238) is fixedly connected to the other end of the first supporting frame (3237); and one end of the output shaft of the first cylinder (3238) is perpendicular to the fourth connecting plate (3231).

6. A 3D printer using multi-color wires according to claim 3, Features: The first rotating wheel (3215) comprises a rotating shaft (32151) and gear teeth (32152); The rotating shaft (32151) is cylindrical, one end of the rotating shaft (32151) is drivingly connected to the second motor (3213), and the other end is rotationally connected to the second connecting plate (3211); the gear teeth (32152) are arranged in the middle section of the rotating shaft (32151), and a plurality of groups of protrusions (32153) are also arranged on the gear teeth (32152), and the protrusions (32153) are conical.

7. A 3D printer using multi-color wires according to claim 1, Features: The first connecting plate (34) is in the shape of a circular plate. A first clamping groove (341) is provided on the first connecting plate (34). The central axis of the first clamping groove (341) does not coincide with the central axis of the first connecting plate (34). The upper end of the discharging mechanism (4) is fixedly mounted in the first clamping groove (341).

8. A 3D printer using multi-color wires according to claim 4 or 7, Features: The discharging mechanism (4) comprises a heat dissipation pipe (41), a throat pipe (42), a heating block (43) and a nozzle (44); One end of the throat pipe (42) is in communication with the second wire support (3232); the upper end of the heat dissipation pipe (41) is fixedly mounted in the first slot (341); The other end of the throat (42) is fixedly connected to the heating block (43) and the nozzle (44) respectively; the nozzle (44) is located below the heating block (43); and the heat dissipation pipe (41) is fixedly mounted on the throat (42) and is located above the heating block (43).

9. A 3D printer using multi-color wires according to claim 1, Features: The feeding assembly (5) comprises a second support frame (51) and a third support frame (53); The second support frame (51) is fixedly mounted on one end of the movable seat (2); a wire disc (52) is rotatably mounted on the second support frame (51); and a wire (55) is rolled on the wire disc (52); One end of the third support frame (53) is fixedly connected to the movable seat (2), and the other end of the third support frame (53) is provided with a third wire support (56), the third wire support (56) is an arc-shaped groove, and a second fixed tube (54) is also fixedly mounted on the third wire support (56).

10. A 3D printer using multi-color wires according to claim 5, Features: A first mounting block (3239) is also fixedly mounted on one end of the output shaft of the first cylinder (3238), and a blade (32310) is fixedly mounted on one end of the first mounting block (3239) away from the first support frame (3237).

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