阅读说明：本技术 一种3d色彩打印机及打印控制方法 (3D color printer and printing control method ) 是由 陈炫玮 黄斌 罗陆锋 于 2020-07-20 设计创作，主要内容包括：本发明公开了一种3D色彩打印机,其包括包括外壳；外壳内设有空腔；空腔内设有支撑架；支撑架上设有可相对支撑架平移的喷头装置、至少两个用于向喷头装置提供耗材的供料装置、以及可相对支撑架升降运动的平台装置；喷头装置位于平台装置的上方；喷头装置包括安装架、以及设于安装架上的喷嘴组件和散热组件；喷嘴组件包括沿耗材输送方向依次连通的喉管、混色通道和喷料头；散热组件包括用于对喉管进行散热的风冷装置和用于对喷料头输出的熔融耗材进行降温的鼓风装置。本发明具有结构简单且设置合理,安装便捷的优点。本发明还公开了一种打印控制方法,其解决了3D打印机混色打印的问题。(The invention discloses a 3D color printer, which comprises a shell; a cavity is arranged in the shell; a supporting frame is arranged in the cavity; the support frame is provided with a spray head device which can translate relative to the support frame, at least two feeding devices which are used for providing consumables for the spray head device, and a platform device which can move up and down relative to the support frame; the spray head device is positioned above the platform device; the spray head device comprises a mounting frame, and a nozzle assembly and a heat dissipation assembly which are arranged on the mounting frame; the nozzle assembly comprises a throat pipe, a color mixing channel and a material spraying head which are sequentially communicated along the conveying direction of the consumables; the heat dissipation assembly comprises an air cooling device used for dissipating heat of the throat pipe and an air blowing device used for cooling the melting consumable materials output by the material spraying head. The invention has the advantages of simple structure, reasonable arrangement and convenient installation. The invention also discloses a printing control method, which solves the problem of mixed color printing of the 3D printer.)

1. A 3D color printer comprising a housing; a cavity is arranged in the shell; a support frame is arranged in the cavity; the support frame is provided with a spray head device capable of translating relative to the support frame, at least two feeding devices for providing consumables for the spray head device and a platform device capable of moving up and down relative to the support frame; the spray head device is positioned above the platform device; the spray head device comprises a mounting rack, and a nozzle assembly and a heat dissipation assembly which are arranged on the mounting rack; the nozzle assembly comprises a throat pipe, a color mixing channel and a material spraying head which are sequentially communicated along the conveying direction of the consumables; the heat dissipation assembly comprises an air cooling device used for dissipating heat of the throat pipe and an air blowing device used for cooling the melting consumables output by the material spraying head.

2. The 3D color printer of claim 1, wherein the support frame comprises an upper panel and a lower panel spaced apart from each other in a vertical direction, and a plurality of posts for connecting the upper panel and the lower panel; the plurality of upright posts are arranged along the edge of the lower panel and enclose to form an installation space.

3. The 3D color printer of claim 2, wherein the support frame further comprises a left baffle, a right baffle, and a connecting plate; the left baffle, the right baffle and the connecting plate are all arranged on the lower panel; the left baffle and the right baffle are positioned in the installation space and are arranged in vertical opposite directions; the connecting plate is connected between the left baffle and the right baffle; a printing space is formed among the left baffle, the right baffle and the connecting plate; each feeding device is respectively arranged on one end face, far away from the printing space, of the left baffle and the right baffle.

4. The 3D color printer according to claim 3, wherein the platform device comprises a support, a heat bed disposed on the support, and a flexible sticker disposed on an end surface of the heat bed away from the support.

5. The 3D color printer of claim 4, wherein the edge of the connecting plate is provided with a plurality of connecting posts; the connecting column is sleeved with an elastic piece; the hot bed is erected on the connecting column, one end of the elastic piece is abutted to the hot bed, and the other end of the elastic piece is abutted to the connecting plate.

6. The 3D color printer of claim 4, wherein a through slot is provided on the connecting plate along the direction of the lifting motion of the platform device; a lifting assembly is connected between the upper panel and the lower panel; the lifting assembly comprises a pair of guide rods, a moving block sleeved on the pair of guide rods and a driving device for driving the moving block to reciprocate along the guide rods; the motion piece towards the connecting plate extends has connecting portion, just connecting portion pass through logical groove with the leg joint.

7. The 3D color printer of claim 2, wherein the top of the upper panel is provided with an opening communicating with the printing space; the top of the upper panel is provided with a translation device which controls the spray head device to reciprocate along the transverse direction and the longitudinal direction of the upper panel, and the movement range of the spray head device is arranged in the opening.

8. The 3D color printer of claim 6, wherein the housing is provided with a through hole communicating with the through slot; and a filter screen is arranged in the through hole.

9. The 3D color printer of claim 8, wherein the screen is an EPA screen.

10. Use of a 3D color printer according to any of claims 1 to 8 for a print control method, comprising the steps of:

s1: establishing a three-dimensional solid model on a computer, inputting a specified color block and adding the color block to the three-dimensional solid model;

s2: inputting the color three-dimensional model into a color slicing module of a computer;

s3: the color slicing module is used for slicing the three-dimensional model to obtain a color slice file;

s4: inputting the color slice file into a color 3D printer, and starting to print the three-dimensional model;

s4: after printing one layer, the spray head device moves to a color ink-jet working area to jet ink by a three-dimensional model;

s5: after one layer of ink jet is finished, ink curing is carried out;

s6: and controlling the spray head device to print and spray ink on the next layer.

Technical Field

The invention relates to the technical field of 3D printing, in particular to a 3D color printer and a printing control method.

Background

The 3D color printing is a rapid forming process, a three-dimensional model is manufactured in a layer-by-layer stacking mode, the operation process of the three-dimensional model is similar to that of a traditional printer, only the traditional printer prints ink on paper to form a two-dimensional plane drawing, and the three-dimensional printer realizes layer-by-layer stacking and overlapping of liquid photosensitive resin materials, molten plastic wires, gypsum powder and other materials to form a three-dimensional entity in a binder spraying or extruding mode.

Current 3D color printer is through spouting the model with the material of dissolving again behind the shower nozzle heating material, after the shower nozzle temperature reached can dissolve the material and carry out normal print work, still can continue to rise along with the temperature of carrying out the shower nozzle of printing process. When printing is completed, rapid cooling is required. Therefore, the temperature of the spray head needs to be controlled within a certain range, other components are prevented from being dissolved and burnt due to overhigh temperature of the spray head, and the spray head can be rapidly cooled. Therefore, the 3D color printer is usually provided with a heat dissipation device to control the temperature range of the spray head, however, the heat dissipation speed and the cooling speed of the existing heat dissipation device are low, the structure is unreasonable, the installation is not easy, and the printing requirement of the 3D color printer cannot be met.

Moreover, the object printed by the existing 3D printer has only one color, or a combination of several different color materials. In order to obtain a colored model, coloring is performed on the surface of the model after printing is completed. In another method, according to the color to be printed, a premixer is used to mix red, yellow and blue resins to form the desired color, and then the mixed resins are printed to finally obtain a colored 3D product. However, this solution has the following problems: the color of each pixel point of a product to be printed is possibly different, so that the color needs to be changed continuously in the whole printing process, the glue amount needed by a single pixel point is very small, and the switching among different colors is difficult to realize by adopting a premixing mode for printing.

Therefore, there is a need to develop or improve a 3D color printer and a printing control method.

Disclosure of Invention

The invention aims to provide a 3D color printer and a printing control method to solve the problems that the existing heat dissipation device is low in heat dissipation speed and cooling speed, unreasonable in structural arrangement and not easy to install, and the color of each pixel point of a product to be printed is possibly different, so that the color needs to be changed continuously in the whole printing process, the glue amount needed by a single pixel point is very small, and the switching between different colors is difficult to realize by adopting a premixing mode for printing.

In order to achieve the above object, the present invention provides a 3D color printer, which includes a housing; a cavity is arranged in the shell; a support frame is arranged in the cavity; the support frame is provided with a spray head device capable of translating relative to the support frame, at least two feeding devices for providing consumables for the spray head device and a platform device capable of moving up and down relative to the support frame; the spray head device is positioned above the platform device; the spray head device comprises a mounting rack, and a nozzle assembly and a heat dissipation assembly which are arranged on the mounting rack; the nozzle assembly comprises a throat pipe, a color mixing channel and a material spraying head which are sequentially communicated along the conveying direction of the consumables; the heat dissipation assembly comprises an air cooling device used for dissipating heat of the throat pipe and an air blowing device used for cooling the melting consumables output by the material spraying head.

The supporting frame comprises an upper panel and a lower panel which are arranged at intervals up and down, and a plurality of upright posts for connecting the upper panel and the lower panel; the plurality of upright posts are arranged along the edge of the lower panel and enclose to form an installation space.

The supporting frame also comprises a left baffle, a right baffle and a connecting plate; the left baffle, the right baffle and the connecting plate are all arranged on the lower panel; the left baffle and the right baffle are positioned in the installation space and are arranged in vertical opposite directions; the connecting plate is connected between the left baffle and the right baffle; a printing space is formed among the left baffle, the right baffle and the connecting plate; each feeding device is respectively arranged on one end face, far away from the printing space, of the left baffle and the right baffle.

The platform device comprises a support, a hot bed arranged on the support and a flexible sticker arranged on one end face, far away from the support, of the hot bed.

The edge of the connecting plate is provided with a plurality of connecting columns; the connecting column is sleeved with an elastic piece; the hot bed is erected on the connecting column, one end of the elastic piece is abutted to the hot bed, and the other end of the elastic piece is abutted to the connecting plate.

A through groove is formed in the connecting plate along the lifting movement direction of the platform device; a lifting assembly is connected between the upper panel and the lower panel; the lifting assembly comprises a pair of guide rods, a moving block sleeved on the pair of guide rods and a driving device for driving the moving block to reciprocate along the guide rods; the motion piece towards the connecting plate extends has connecting portion, just connecting portion pass through logical groove with the leg joint.

The top of the upper panel is provided with an opening communicated with the printing space; the top of the upper panel is provided with a translation device which controls the spray head device to reciprocate along the transverse direction and the longitudinal direction of the upper panel, and the movement range of the spray head device is arranged in the opening.

The shell is provided with a through hole communicated with the through groove; and a filter screen is arranged in the through hole.

The filter screen is an EPA filter screen.

The invention also provides a printing control method, which comprises the following steps:

s1: establishing a three-dimensional solid model on a computer, inputting a specified color block and adding the color block to the three-dimensional solid model;

s2: inputting the color three-dimensional model into a color slicing module of a computer;

s3: the color slicing module is used for slicing the three-dimensional model to obtain a color slice file;

s4: inputting the color slice file into a color 3D printer, and starting to print the three-dimensional model;

s4: after printing one layer, the spray head device moves to a color ink-jet working area to jet ink by a three-dimensional model;

s5: after one layer of ink jet is finished, ink curing is carried out;

s6: and controlling the spray head device to print and spray ink on the next layer.

Compared with the prior art, the 3D color printer and the printing control method provided by the technical scheme have the beneficial effects that:

1. by arranging the support frame, the mounting and fixing of the feeding device, the platform device and the spray head device are ensured, and the smooth printing of the color printer is guaranteed; by arranging the at least two feeding devices, the mixed color printing of the 3D color printer is realized, and the attractiveness and the ornamental value of the product are improved; the platform device matched with the sprayer device is arranged, so that the preset three-dimensional solid model is printed by matching with the sprayer device; by arranging the throat pipe and the color mixing channel, the color mixing printing of the 3D color printer is realized; by arranging the air cooling device, the printing material is ensured not to expand when entering the throat pipe and can smoothly enter the color mixing channel through the throat pipe; through being provided with air-blast device to the realization is cooled down the molten material that the stub bar was extruded, makes it solidify into the solid.

2. The invention has the advantages of simple structure, reasonable arrangement and convenient installation, and solves the problem of color mixing printing of the 3D printer.

Drawings

The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.

FIG. 1 is a schematic structural diagram of a 3D color printer according to an embodiment of the present invention;

FIG. 2 is a second schematic structural diagram of a 3D color printer according to an embodiment of the present invention;

FIG. 3 is a third schematic structural diagram of a 3D color printer according to an embodiment of the present invention;

FIG. 4 is a fourth schematic structural diagram of a 3D color printer according to an embodiment of the present invention;

FIG. 5 is a fifth schematic view of a 3D color printer according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a head device of a 3D color printer according to an embodiment of the present invention;

FIG. 7 is a second schematic structural diagram of a nozzle device of a 3D color printer according to an embodiment of the present invention;

fig. 8 is a third schematic structural diagram of a nozzle device of a 3D color printer according to an embodiment of the present invention.

Description of reference numerals: 1-a housing; 2-a support frame; 21-upper panel; 22-a lower panel; 23-a column; 24-a left baffle; 25-a right baffle; 26-a connecting plate; 3-a spray head device; 31-a mounting frame; 32-throat pipe; 33-a color mixing channel; 34-a spray head; 35-air cooling device; 36-a blower device; 37-a heat sink; 4-a feeding device; 5-a platform device; 51-a scaffold; 52-hot bed; 53-flexible paste; 54-an elastic member; 6, fixing a frame; 7-air outlet; 8-air inlet; 9-a wind guide part; 10-a lifting assembly; 11-a through slot; 12-an opening; 13-a first guide rail; 14-a second guide rail; 15-a traction device; 16-a filter screen.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

The 3D color printer shown in FIGS. 1-8 comprises a housing 1; a cavity is arranged in the shell 1; a support frame 2 is arranged in the cavity; the support frame 2 is provided with a spray head device 3 capable of translating relative to the support frame 2, at least two feeding devices 4 for providing consumables for the spray head device 3 and a platform device 5 capable of lifting relative to the support frame 2; the spray head device 3 is positioned above the platform device 5; the spray head device 3 comprises a mounting frame 31, and a nozzle assembly and a heat dissipation assembly which are arranged on the mounting frame 31; the nozzle assembly comprises a throat 32, a color mixing channel 33 and a material spraying head 34 which are sequentially communicated along the conveying direction of the consumables; the heat dissipation assembly comprises an air cooling device 35 for dissipating heat of the throat 32 and an air blowing device 36 for cooling the molten consumables output by the material spraying head 34.

In the embodiment, the support frame 2 is arranged, so that the feeding device 4, the platform device 5 and the spray head device 3 are ensured to be installed and fixed, and smooth printing of the color printer is guaranteed; by arranging the two feeding devices 4, the mixed color printing of the 3D color printer is realized, and the attractiveness and the ornamental value of the product are improved; the platform device 5 matched with the nozzle device 3 is arranged, so that the preset three-dimensional solid model is printed by matching with the nozzle device 3; by arranging the throat 32 and the color mixing channel 33, the color mixing printing of the 3D color printer is realized; the air cooling device 35 is arranged, so that the printing material is ensured not to expand when entering the throat 32 and can smoothly enter the color mixing channel 33 through the throat 32; the blower 36 is provided to cool the molten material extruded from the nozzle 34 and solidify the molten material into a solid.

As shown in fig. 6 to 8, in order to cool the throat 32, the nozzle assembly in this embodiment further includes a heat sink 37, and the throat 32 penetrates the heat sink 37 from top to bottom; the throat 32 comprises a first feed pipe and a second feed pipe; one end of the first feeding pipe and one end of the second feeding pipe correspond to one feeding device 4, and the other end of the first feeding pipe and the other end of the second feeding pipe are communicated with the color mixing channel 33.

Wherein, a Y-shaped channel is arranged in the color mixing channel 33; any two ends of the Y-shaped channel are respectively communicated with the first feeding pipe and the second feeding pipe; one end of the Y-shaped channel facing the platform device 5 is communicated with a material spraying head 34.

In order to better cool the molten material extruded from the material spraying head 34 and solidify the molten material into a solid, as shown in fig. 6 to 8, a fixing frame 6 for installing the air blowing device 36 is further disposed on the mounting frame 31 in this embodiment, and an air duct is disposed at the bottom of the fixing frame 6; the air duct comprises an air inlet 8, an air outlet 7 and an air guide part 9; one end of the air guide part 9 is communicated with one end of the air inlet 8, the other end of the air guide part is communicated with the air outlet 7, and the air outlet 7 faces the molten material extruded by the material spraying head 34. The larger the curved surface fillet at the corner of the air guiding part 9 is, the smoother the wind direction change is, and the air outlet 7 blows to a place 0.5-4mm below the material spraying head 34. More importantly, a section of smooth inclined air duct is arranged at the air outlet 7 to guide the direction, so that the smoothness of the air is ensured; moreover, the output of the current is controlled by an STM32 singlechip to adjust the wind power, and the optimal wind power is 85% -95% of the wind power of the air blowing device 36.

In this embodiment, the air cooling device 35 and the air blowing device 36 are respectively located at two sides of the heat sink 37, so that the structure is compact, the installation is convenient, and the heat dissipation effect is good.

In order to ensure the stability of the support frame 2, the support frame 2 in this embodiment includes an upper panel 21 and a lower panel 22 which are arranged at an interval from top to bottom, and a plurality of columns 23 for connecting the upper panel 21 and the lower panel 22; a plurality of the pillars 23 are arranged along the edge of the lower panel 22 and enclose a mounting space.

Moreover, the support frame 2 further comprises a left baffle plate 24, a right baffle plate 25 and a connecting plate 26; the left baffle plate 24, the right baffle plate 25 and the connecting plate 26 are all arranged on the lower panel 22; the left baffle plate 24 and the right baffle plate 25 are positioned in the installation space and are arranged in a vertical opposite mode; the connecting plate 26 is connected between the left baffle plate 24 and the right baffle plate 25; a printing space is formed among the left baffle plate 24, the right baffle plate 25 and the connecting plate 26; each of the feeding devices 4 is respectively arranged on an end surface of the left baffle plate 24 and the right baffle plate 25 far away from the printing space.

As shown in fig. 1, in order to better match with the use of the spray head device 3, the platform device 5 in this embodiment includes a support 51, a hot bed 52 disposed on the support 51, and a flexible sticker 53 disposed on an end surface of the hot bed 52 away from the support 51; a plurality of connecting columns are arranged at the edge of the connecting plate 26; the connecting column is sleeved with an elastic piece 54; the hot bed 52 is erected on the connecting column, and one end of the elastic member 54 abuts against the hot bed 52, and the other end abuts against the connecting plate 26.

As shown in fig. 2, in order to realize the lifting movement of the platform device 5, a through slot 11 is provided on the connecting plate 26 in the embodiment along the lifting movement direction of the platform device 5; the lifting assembly 10 is connected between the upper panel 21 and the lower panel 22; the lifting assembly 10 comprises a pair of guide rods, a moving block sleeved on the pair of guide rods and a driving device for driving the moving block to reciprocate along the guide rods; the motion block extends to form a connecting portion towards the connecting plate 26, and the connecting portion passes through the through groove 11 and is connected with the bracket 51.

In order to improve the mobility of the head device 3 and meet the printing requirement, the top of the upper panel 21 in this embodiment is provided with an opening 12 communicated with the printing space; the top of the upper panel 21 is provided with a translation device for controlling the spray head device 3 to reciprocate along the transverse direction and the longitudinal direction of the upper panel 21, and the movement range of the spray head device 3 is arranged in the opening 12; the translation device comprises a pair of first guide rails 13 arranged along the Y axis of the upper panel 21 and a second guide rail 14 arranged along the X axis of the upper panel 21; two ends of the second guide rail 14 are respectively connected with each first guide rail 13 in a sliding manner; the mounting frame 31 is slidably connected to the second guide rail 14; a traction device 15 for driving the first guide rail 13 to reciprocate along the second guide rail 14 is arranged beside the first guide rail 13; the traction device 15 comprises a driving motor and a transmission belt; the belt is connected to the second rail 14.

As shown in fig. 2, in order to improve the air quality and make the workplace safer, the 3D printer is provided with closed air circulation from inside to outside, so as to ensure safer working environment (an exhaust fan is arranged inside to absorb the air in the 3D printer to the filter screen 16). The shell 1 is provided with a through hole communicated with the through groove 11; a filter screen 16 is arranged in the through hole; the filter screen 16 is an EPA filter screen; the filtering effect of the three-dimensional printing machine on all Ultra Fine Particles (UFP) emitted in the 3D printing process is as high as 95%, and a safe physical barrier can be formed for a printing area. More material, less bothersome optimized software profiles precisely control the filtering of each material. Therefore, you can concentrate on creating an excellent 3D printed part with any material selected. There is no need to worry about UFPs and to configure the printer with extra time. The main characteristics are that the EPA filter screen 16: up to 95% of UFP controlled extraction can be removed: from inside to outside circulation of air, optimize the enhancement security specially for filtering and printing quality: the physical barrier prevents foreign objects from entering the printer interior and is optimized for the application; detect the materials used and adjust the air circulation easy settings.

In this embodiment, the color mixing channel 33 is further provided with a mounting hole; an electric thermocouple and a heating rod are arranged in the mounting hole. Moreover, the 3D printer further comprises a heating block for heating the consumable to melt.

The embodiment also provides a printing control method, which comprises the following steps:

s1: establishing a three-dimensional solid model on a computer, inputting a specified color block and adding the color block to the three-dimensional solid model;

s2: inputting the color three-dimensional model into a color slicing module of a computer;

s3: the color slicing module is used for slicing the three-dimensional model to obtain a color slice file;

s4: inputting the color slice file into a color 3D printer, and starting to print the three-dimensional model;

s4: after one layer is printed, the spray head device 3 moves to a color ink-jet working area to carry out three-dimensional model ink-jet;

s5: after one layer of ink jet is finished, ink curing is carried out;

s6: and controlling the spray head device 3 to print and spray ink on the next layer.

The above examples are to be construed as merely illustrative and not limitative of the remainder of the disclosure. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.