CN113580574A

CN113580574A - Color matching mechanism for 3D printer and color matching method thereof

Info

Publication number: CN113580574A
Application number: CN202110916937.3A
Authority: CN
Inventors: 黄一山; 吴震; 杨华杰; 杨红九; 吴杰华; 谢安琼
Original assignee: Shenzhen Kings 3d Printing Equipment Technology Co ltd
Current assignee: Shenzhen Kings 3d Printing Equipment Technology Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2021-11-02

Abstract

The invention relates to the technical field of 3D printing raw material processing, in particular to a color mixing mechanism for a 3D printer and a color mixing method thereof. The device comprises a shell, a pigment box, a preheating material guide unit, a coloring unit and a material mixing unit; a feeding port is formed in the top of the shell; the paint box is arranged on the outer wall of the shell; the preheating material guide unit is arranged in the shell and is positioned right below the feeding port; the coloring unit comprises a coloring pipe body and a heating ring; the coloring pipe body is arranged in the shell, a coloring pipe connecting port is formed in the top of the coloring pipe, and the coloring pipe connecting port is positioned right below the preheating material guide unit; the inner wall of the upper color tube body is provided with a heating ring, and the heating ring is provided with a plurality of groups of second anti-skid lugs; the bottom of the coloring pipe body is communicated with a coloring head. The invention can shorten the stirring and mixing time and improve the working efficiency.

Description

Color matching mechanism for 3D printer and color matching method thereof

Technical Field

The invention belongs to the technical field of 3D printing raw material processing, and particularly relates to a color matching mechanism for a 3D printer and a color matching method thereof.

Background

A 3D printer is a machine that creates real physical objects based on specialized computer files in an additive creation, and thus the process is referred to as "additive manufacturing.

With the continuous maturity of 3D printer technology, 3D printers have also changed from monochrome printing in the past to multi-color printing today. In order to obtain a desired color, the color of the raw material wire needs to be adjusted by the color adjusting mechanism.

The existing color matching mechanism generally heats a raw material wire to be in a liquid state, adds liquid pigment into the liquid raw material wire, and then stirs and mixes the liquid raw material wire to obtain the required color.

However, in the heating process of the raw material wire, the raw material wire is made of epoxy resin, so that the melting point is high, and the heating process is slow. The raw material wires need to be preheated before heating, and the existing preheating mechanism cannot realize preheating in the feeding process, so that the material guide unit is usually required to be closed, and feeding is carried out after preheating, thereby wasting a large amount of working time. And the contact area between the raw material wire and the heat source is limited, which also results in poor preheating effect.

Disclosure of Invention

Aiming at the problems, the invention provides a color mixing mechanism for a 3D printer, which comprises a shell, a pigment box, a preheating material guide unit, a coloring unit and a material mixing unit, wherein the pigment box is arranged on the shell; a feeding port is formed in the top of the shell; the paint box is arranged on the outer wall of the shell; the preheating material guide unit is arranged in the shell and is positioned right below the feeding port; the coloring unit comprises a coloring pipe body; the coloring pipe body is arranged in the shell, a coloring pipe connecting port is formed in the top of the coloring pipe body, and the coloring pipe connecting port is located right below the preheating material guide unit; the inner wall of the upper color tube body is provided with a heating ring, and the heating ring is provided with a plurality of groups of second anti-skid lugs; the bottom of the coloring pipe body is communicated with a coloring head, a plurality of groups of pigment spray heads are arranged on the inner wall of the coloring head, and the plurality of groups of pigment spray heads are communicated with the discharge end of the pigment box; the shell of the mixing unit is located below the shell, and the input end of the mixing unit is communicated with the output end of the upper color head.

Furthermore, a plurality of groups of independent cavities are formed in the pigment box, and a group of pigment discharge holes are formed in the bottom of each group of independent cavities; the number of the independent cavities is the same as that of the pigment spray heads, and each group of the pigment discharge holes are communicated with one group of the corresponding pigment spray heads.

Further, a mold temperature controller is installed on the shell and is respectively communicated with the preheating material guiding unit, the heating ring and the material mixing unit.

Further, the preheating material guide unit comprises a first motor and two groups of material guide rotating rods; the first motor is fixedly arranged on the side wall of the shell; the two groups of material guide rotating rods are arranged in the shell and are symmetrically arranged around the central axis of the feeding port; one end of the material guide rotating rod is in transmission connection with the output end of the first motor.

Furthermore, a group of transmission gears are respectively arranged on the two groups of material guide rotating rods, and the two groups of material guide rotating rods are in transmission connection through the two groups of transmission gears.

Furthermore, the preheating material guide unit also comprises two groups of material guide blocks; the two groups of material guide blocks are respectively sleeved on the two groups of material guide rotating rods and are provided with a plurality of groups of first anti-skid lugs.

Further, the mixing unit comprises a mixing drum, a second motor and a mixing rotating rod; the churn fixed mounting be in the casing bottom, just the feed inlet has been seted up at the churn top, the second motor is installed in churn one end, the compounding bull stick is installed the churn, compounding bull stick one end with the output transmission of second motor is connected.

Furthermore, a plurality of groups of stirring blades are distributed on the material mixing rotating rod in an annular array mode, and the other ends of the stirring blades are attached to the inner wall of the stirring cylinder in a sliding mode.

Further, the stirring blade comprises a stirring frame; one end of the stirring frame is installed on the material mixing rotating rod, the other end of the stirring frame is provided with a scraping plate, and the other end of the scraping plate is attached to the inner wall of the stirring cylinder in a sliding mode; and a heating net is arranged on the stirring frame.

A color matching method of a color matching mechanism for a 3D printer comprises the following steps:

the preheating material guiding unit is used for heating the temperature of the raw material wire to be between 100 ℃ and 150 ℃ so as to realize preheating work;

heating the preheated raw material wire to 350-400 ℃ by using a heating ring to enable the raw material wire to be pasty, and coloring the raw material wire by using a pigment nozzle;

and conveying the pasty raw material wire into a mixing unit, heating to 650-750 ℃ to change the raw material wire into a liquid state, stirring and mixing the liquid raw material and the liquid pigment, and finishing the color mixing operation.

The invention has the beneficial effects that:

1. can realize the preheating to the raw materials wire rod when the guide through preheating the guide unit, then the rethread heating ring heats the raw materials wire rod to pasty with higher temperature when the raw materials wire rod descends to after the secondary preheats, spray liquid pigment on pasty raw materials wire rod through the pigment shower nozzle promptly, will color the work in advance. And the work is finished in the feeding process, so that the subsequent heating time is reduced, and the mixing time of the liquid pigment is shortened. Thereby improving the working efficiency.

2. The second motor drives the stirring blades of the plurality of groups to rotate along the central axis of the material mixing rotating rod. After pasty raw material wires enter the mixing drum, a plurality of groups of heating nets in rotation are in alternate contact with the raw material wires, so that the raw material wires can be mixed in the first time of contact with a heat source, heat loss is avoided, and the mixing quality is improved.

3. When stirring frame and heating screen rotated, can drive and scrape the flitch and slide on the heat preservation inner wall to this strikes off the finished product raw materials of adhesion on the heat preservation inner wall, has reduced the waste of material. And the color difference of subsequent finished raw materials caused by the fusion of the raw materials with different colors with the subsequent raw materials is avoided.

4. After preheating through preheating the guide unit and carrying out once, the rethread is colored the unit and is carried out the secondary of higher temperature and preheat for the raw materials wire rod can realize the heating at the in-process of carrying. And after the secondary preheating, the pasty raw material wire rod is colored through the pigment nozzle, the time for blending the liquid pigment and the raw material wire rod is advanced, the time for blending the liquid pigment and the raw material mixture is prolonged, the liquid pigment and the liquid raw material wire rod are blended more thoroughly, and the color blending effect is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 shows a schematic structural diagram of a toning mechanism according to an embodiment of the invention;

FIG. 2 shows a schematic cross-sectional view of a toning mechanism according to an embodiment of the invention;

FIG. 3 shows a right side cross-sectional schematic view of a toning mechanism according to an embodiment of the invention;

fig. 4 is a schematic top view illustrating a preheating guide unit according to an embodiment of the present invention;

fig. 5 shows a schematic cross-sectional view of a coloring unit according to an embodiment of the present invention;

FIG. 6 shows a schematic cross-sectional view of a compounding unit according to an embodiment of the present invention;

FIG. 7 shows a schematic connection diagram of a stirring blade and a mixing rod according to an embodiment of the present invention;

FIG. 8 shows a schematic cross-sectional view of a mold temperature machine according to an embodiment of the invention.

In the figure: 100. a housing; 110. a feeding port; 200. a paint box; 300. a mold temperature controller; 310. a mold temperature machine housing; 320. a heating chamber; 330. a heating mechanism; 400. preheating a material guide unit; 410. a first motor; 420. a material guiding rotary rod; 430. a transmission gear; 440. a material guide block; 450. a first heat inlet; 460. a first anti-skid bump; 500. a coloring unit; 510. the coloring pipe is connected with the material opening; 520. pneumatic bolt clippers; 530. coloring pipe body; 540. a heating ring; 550. a second anti-skid bump; 560. a second heat inlet; 570. a coloring head; 580. a pigment sprayer; 600. a mixing unit; 610. a mixing drum; 620. a heat-insulating layer; 630. a feed inlet; 640. a second motor; 650. a material mixing rotating rod; 660. a third heat inlet; 670. a discharge port; 680. stirring blades; 681. a stirring frame; 682. heating the net; 683. and a scraping plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a color matching mechanism for a 3D printer. Comprises a shell 100, a pigment box 200, a mold temperature controller 300, a preheating material guiding unit 400, a coloring unit 500 and a mixing unit 600. Illustratively, as shown in fig. 1, 2 and 3, a material inlet 110 is formed at the top of the housing 100.

Pigment box 200 fixed mounting be in on the outer wall of casing 100 one side, just seted up a plurality of groups independent cavity in the pigment box 200, every group a set of pigment discharge gate has all been seted up to independent cavity bottom. The color box 200 is used to provide liquid color for toning.

The mold temperature controller 300 is fixedly installed on an outer wall of one side of the housing 100. The die temperature machine 300 is used to provide heat energy for heating the raw material wire.

The preheating material guiding unit 400 is fixedly installed in the housing 100 and is located right below the feeding port 110. The preheating guide unit 400 is used for preheating the raw material.

The coloring unit 500 is fixedly installed in the housing 100 and is located right under the preheating guide unit 400. The cavity of the coloring unit 500 is respectively communicated with the color box 200 and the mold temperature controller 300. The coloring unit 500 is used to spray liquid pigment on the raw material wire.

The outer shell of the mixing unit 600 is located below the housing 100, and the input end of the mixing unit 600 is communicated with the output end of the coloring unit 500. The mixing unit 600 is used to mix the raw material strands and the liquid pigment.

The preheating guide unit 400 includes a first motor 410, two sets of guide rods 420, and two sets of guide blocks 440. Illustratively, as shown in fig. 4, the first motor 410 is fixedly mounted on a sidewall of the housing 100. The two material guiding rotation rods 420 are both installed in the casing 100, and the two material guiding rotation rods 420 are symmetrically arranged around the central axis of the material inlet 110. One end of one group of the material guiding rotating rods 420 is in transmission connection with the output end of the first motor 410. Two groups of the material guiding rotating rods 420 are respectively provided with a group of transmission gears 430, and the two groups of the material guiding rotating rods 420 are in transmission connection through the two groups of the transmission gears 430. The two groups of material guide blocks 440 are respectively sleeved on the two groups of material guide rotating rods 420, a group of annular grooves are formed in the two groups of material guide blocks 440, a gap is formed between the two groups of annular grooves, and the gap is located under the material inlet 110. A plurality of first anti-slip bumps 460 are disposed on each of the two sets of annular grooves, and the inner cavity of the material guide block 440 is communicated with the inner cavity of the material guide rotating rod 420. One end of each of the two material guiding rotation rods 420, which is far away from the first motor 410, is provided with a first heat inlet 450, and the other end of each of the two first heat inlets 450 is communicated with the mold temperature controller 300.

The mold temperature controller 300 is started, and the material guiding rotary rod 420 and the material guiding block 440 are heated to between 100 ℃ and 150 ℃ by the mold temperature controller 300. Then, the first motor 410 is started, the two material guide blocks 440 can rotate in opposite directions through the first motor 410 and the two sets of transmission gears 430, and the raw material wire is conveyed downwards through the first anti-slip bumps 460. And in the contact of the first anti-skid protrusions 460 and the raw material wire, heat energy is transferred to the raw material wire, and the preheating function is realized while the material is guided. And because the raw material wire rod is arranged in the gap between the two groups of annular chutes, the contact area between the raw material wire rod and the heat source is increased, and the preheating effect is improved.

The coloring unit 500 includes a coloring pipe body 530, a pneumatic bolt cutter 520, and a heating ring 540. Illustratively, as shown in fig. 5, the coloring pipe body 530 is fixedly installed in the housing 100, the pneumatic bolt cutter 520 is fixedly installed at the top of the coloring pipe body 530, and the inner cavity of the pneumatic bolt cutter 520 is communicated with the inner cavity of the coloring pipe body 530. The top of the pneumatic bolt cutter 520 is provided with an upper color pipe connecting port 510, and the upper color pipe connecting port 510 is positioned under the gap between the two sets of material guiding blocks 440. The inner wall of the coloring pipe body 530 is provided with a heating ring 540, and a plurality of groups of second anti-slip lugs 550 are distributed on the heating ring 540 at equal intervals. The side wall of the coloring pipe body 530 is provided with a second heat inlet 560, one end of the second heat inlet 560 is communicated with the inner cavity of the heating ring 540, and the other end is communicated with the mold temperature controller 300. The bottom of the upper color tube body 530 is communicated with an upper color head 570, a plurality of groups of pigment spray heads 580 are arranged on the inner wall of the upper color head 570, the number of the pigment spray heads 580 is the same as that of the independent cavities, and each group of the pigment spray heads 580 is communicated with a corresponding group of the pigment discharge holes.

Firstly, the heating ring 540 is heated to a temperature between 350 and 400 ℃ by the mold temperature controller 300, the preheated raw material wire enters the coloring pipe body 530 through the coloring pipe connecting port 510 and then contacts with the heating ring 540, and the raw material wire is heated into paste by the heating ring 540, so that the purpose of secondary preheating is realized, and the subsequent heating time is shortened. The liquid pigment is then sprayed onto the pasty feedstock strands through the pigment spray head 580 so that the liquid pigment blends with the feedstock strands before the compounding operation. The time for mixing colors of subsequent mixed materials is shortened, and the working efficiency is improved.

The mixing unit 600 comprises a mixing drum 610, a second motor 640, a mixing rotating rod 650 and a plurality of groups of mixing blades 680. Illustratively, as shown in fig. 6, the mixing drum 610 is fixedly installed at the bottom of the casing 100, and a feed inlet 630 is opened at the top of the mixing drum 610, and the top of the feed inlet 630 is communicated with the coloring head 570. And a heat preservation layer 620 is arranged on the inner wall of the stirring cylinder 610. Second motor 640 fixed mounting be in churn 610 one end, the compounding bull stick 650 is installed churn 610, compounding bull stick 650 one end with the output transmission of second motor 640 is connected, and the other end has been seted up the third and has been advanced hot mouthful 660, the third advance hot mouthful 660 other end with mould temperature machine 300 communicates. One end of each of the plurality of groups of stirring blades 680 is arranged on the outer wall of the mixing rotating rod 650 in an annular array by taking the central axis of the mixing rotating rod 650 as the center. The other end of the stirring blade 680 is in sliding fit with the inner wall of the heat-insulating layer 620.

A discharge hole 670 is formed in the inner wall of the heat preservation layer 620, and a plurality of groups of pigment feeding holes are formed in the inner wall of the heat preservation layer 620. The quantity of pigment material loading mouth with independent cavity is the same, and every group the pigment material loading mouth other end all communicates on a set of pigment discharge gate rather than corresponding.

The stirring blade 680 includes a stirring frame 681. For example, as shown in fig. 7, one end of the stirring frame 681 is fixedly mounted on the mixing rotating rod 650, and the other end of the stirring frame 681 is fixedly mounted with a scraping plate 683, and the other end of the scraping plate 683 is slidably attached to the inner wall of the insulating layer 620. A through hole is formed in the stirring frame 681, and a heating net 682 is fixedly mounted on the through hole.

The heating net 682 is heated to 650-750 ℃ by the mold temperature controller 300, then the second motor 640 is started, and the second motor 640 drives the plurality of groups of stirring blades 680 to rotate along the central axis of the mixing rotating rod 650. After the paste-like raw material wire enters the stirring cylinder 610. Utilize a plurality of groups of heating net 682 in the rotation to contact with the raw materials wire rod in turn for the raw materials wire rod just can realize stirring compounding in the very first time with the heat source contact, avoids the heat to run off, has improved the compounding quality. When the temperature of the pasty raw material wire is raised to 650-750 ℃, the pasty raw material wire becomes liquid and then is mixed with the liquid pigment attached to the surface of the pasty raw material wire to finally generate a finished product raw material, thereby realizing the color matching function.

When the 3D printer during operation, carry finished product raw materials to printing on the print head of 3D printer through discharge gate 670. And when agitator 681 and heating net 682 rotated, also can drive scraping plate 683 and slide on thermal insulation layer 620 inner wall to this scrapes off the finished product raw materials that the adhesion is on thermal insulation layer 620 inner wall, has reduced the waste of material. And the color difference of subsequent finished raw materials caused by the fusion of the raw materials with different colors with the subsequent raw materials is avoided.

The mold temperature machine 300 includes a mold temperature machine housing 310. For example, as shown in fig. 8, the mold temperature controller housing 310 is fixedly mounted on the outer wall of the housing 100, a plurality of groups of heating compartments 320 are formed in the mold temperature controller housing 310, the number of the heating compartments 320 is not less than three, and a group of heating mechanisms 330 is fixedly mounted in each group of the heating compartments 320. The cavities of the material guide block 440, the heating ring 540 and the stirring frame 681 are respectively communicated with one group of the heating bins 320.

The heating mediums required by the operation of the mold temperature controller 300 are injected into different groups of heating chambers 320, and then are independently heated by the groups of heating mechanisms 330, so that the temperatures of the heating mediums in each group of heating chambers 320 are different. Different requirements of each working unit on heating temperature can be met, and the compatibility of the mold temperature controller 300 is improved.

On the basis of the color matching mechanism for the 3D printer, the embodiment of the invention also provides a color matching method for the color matching mechanism of the 3D printer. The color matching method comprises the following steps:

preheating the raw material wires by using a preheating and material guiding unit for one time so as to increase the temperature of the raw material wires;

preheating the raw material wire to be pasty by using a coloring unit for the second time, and coloring the raw material wire;

and conveying the pasty raw material wire rods to a mixing unit, continuously heating to a liquid state, uniformly stirring, and finishing the color mixing work.

Illustratively, the one preheating operation includes:

inserting one end of a raw material wire into the shell through the feeding port and placing the raw material wire between the two groups of material guide blocks;

starting a mold temperature machine, and heating the material guide block to between 100 ℃ and 150 ℃ through the mold temperature machine;

starting a first motor, driving two groups of material guide rotating rods to rotate through the first motor, and pushing the raw material wire rods to descend by utilizing first anti-skid lugs;

specifically, when first anti-skidding lug and raw materials wire rod contact, can be with the heat transfer of guide block to the raw materials wire rod on to the realization preheats the purpose to the raw materials wire rod.

Illustratively, the secondary preheating operation includes:

starting a mold temperature machine, and heating the heating ring to 350-400 ℃ through the mold temperature machine;

the raw material wire after primary preheating enters the coloring pipe body through the coloring pipe connecting opening and is in contact with the second anti-skid lugs;

the second anti-skid bump transfers the heat energy of the heating ring to the raw material wire, heats the raw material wire to the temperature of 350-400 ℃, enables the raw material wire to be pasty, and completes the secondary preheating work;

starting a valve of the pigment box, and transferring the liquid pigment in the pigment box into the pigment spray head;

after the pasty raw material wire enters the coloring head, liquid pigment is sprayed on the surface of the raw material wire through the pigment spray head, and the coloring work is finished.

Illustratively, the mixing operation includes:

starting a mold temperature machine, and heating the heating net to 650-750 ℃ through the mold temperature machine;

after the raw material wire rod after the coloring operation is fed into the mixing drum through the feeding hole, starting a second motor, driving a mixing rotating rod and a mixing blade to rotate through the second motor, heating the raw material wire rod to a liquid state through the contact of a heating net and the raw material wire rod, and mixing liquid pigment and the raw material wire rod of the liquid through the rotation of the heating net;

and after the liquid raw material wire and the liquid pigment are completely fused, the color matching work is finished.

After preheating through preheating the guide unit and carrying out once, the rethread is colored the unit and is carried out the secondary of higher temperature and preheat for the raw materials wire rod can realize the heating at the in-process of carrying. And after the secondary preheating, the pasty raw material wire rod is colored through the pigment nozzle, the time for blending the liquid pigment and the raw material wire rod is advanced, the time for blending the liquid pigment and the raw material mixture is prolonged, the liquid pigment and the liquid raw material wire rod are blended more thoroughly, and the color blending effect is improved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a 3D is mixing of colors mechanism for printer which characterized in that: comprises a shell (100), a pigment box (200), a preheating material guide unit (400), a coloring unit (500) and a mixing unit (600); a feeding port (110) is formed in the top of the shell (100); the paint box (200) is arranged on the outer wall of the shell (100); the preheating material guide unit (400) is arranged in the shell (100) and is positioned right below the feeding port (110); the coloring unit (500) includes a coloring pipe body (530); the coloring pipe body (530) is installed in the shell (100), a coloring pipe connecting port (510) is formed in the top of the coloring pipe body (530), and the coloring pipe connecting port (510) is located right below the preheating material guide unit (400); a heating ring (540) is arranged on the inner wall of the coloring pipe body (530), and a plurality of groups of second anti-skid lugs (550) are arranged on the heating ring (540); the bottom of the coloring pipe body (530) is communicated with a coloring head (570), a plurality of groups of pigment spray heads (580) are arranged on the inner wall of the coloring head (570), and the plurality of groups of pigment spray heads (580) are communicated with the discharging end of the pigment box (200); the shell of the mixing unit (600) is located below the shell (100), and the input end of the mixing unit (600) is communicated with the output end of the upper color head (570).

2. The toning mechanism for the 3D printer according to claim 1, wherein: a plurality of groups of independent cavities are formed in the pigment box (200), and a group of pigment discharge holes are formed in the bottom of each group of independent cavities; the number of the independent cavities is the same as that of the pigment spray heads (580), and each group of the pigment discharge holes are communicated with one group of the corresponding pigment spray heads (580).

3. The toning mechanism for the 3D printer according to claim 2, wherein: the mould temperature controller (300) is installed on the shell (100), and the mould temperature controller (300) is respectively communicated with the preheating material guiding unit (400), the heating ring (540) and the mixing unit (600).

4. The toning mechanism for the 3D printer according to claim 3, wherein: the preheating material guide unit (400) comprises a first motor (410) and two groups of material guide rotating rods (420); the first motor (410) is fixedly arranged on the side wall of the shell (100); the two groups of material guide rotating rods (420) are arranged in the shell (100), and the two groups of material guide rotating rods (420) are symmetrically arranged around the central axis of the feeding port (110); one end of one group of the material guide rotating rods (420) is in transmission connection with the output end of the first motor (410).

5. The toning mechanism for the 3D printer according to claim 4, wherein: and a group of transmission gears (430) are respectively arranged on the two groups of material guide rotating rods (420), and the two groups of material guide rotating rods (420) are in transmission connection through the two groups of transmission gears (430).

6. The toning mechanism for the 3D printer according to claim 5, wherein: the preheating material guiding unit (400) further comprises two groups of material guiding blocks (440); the two groups of material guide blocks (440) are respectively sleeved on the two groups of material guide rotating rods (420), and the two groups of material guide blocks (440) are provided with a plurality of groups of first anti-skid lugs (460).

7. The toning mechanism for the 3D printer according to claim 1 or 6, wherein: the mixing unit (600) comprises a mixing drum (610), a second motor (640) and a mixing rotating rod (650); mixing drum (610) fixed mounting be in casing (100) bottom, just feed inlet (630) have been seted up at mixing drum (610) top, second motor (640) are installed in mixing drum (610) one end, compounding bull stick (650) are installed mixing drum (610), compounding bull stick (650) one end with the output transmission of second motor (640) is connected.

8. The color matching method of the color matching mechanism for the 3D printer is characterized in that: the color matching method comprises the following steps: the preheating material guiding unit is used for heating the temperature of the raw material wire to be between 100 ℃ and 150 ℃ so as to realize preheating work;

and conveying the pasty raw material wires into a mixing unit, heating to 650-750 ℃ to ensure that the raw material wires are changed into liquid and are stirred and mixed with the liquid pigment to realize mixing and finish color mixing.

9. The method for toning a toning mechanism for a 3D printer according to claim 8, wherein: the preheating operation includes:

the first motor is started, the two groups of material guide rotating rods are driven to rotate through the first motor, and the first anti-skid lugs are utilized to push the raw material wires to descend.

10. The method for toning a toning mechanism for a 3D printer according to claim 8, wherein: the material mixing work comprises the following steps: