CN106738869A

CN106738869A - A kind of high accuracy color three-dimensional printer and its forming method

Info

Publication number: CN106738869A
Application number: CN201710088124.3A
Authority: CN
Inventors: 郭鑫
Original assignee: Jingmen M & Fung Mdt Infotech Ltd
Current assignee: Jingmen M & Fung Mdt Infotech Ltd
Priority date: 2017-02-19
Filing date: 2017-02-19
Publication date: 2017-05-31

Abstract

The present invention relates to a kind of three-dimensional printer and its forming method, three-dimensional printer includes print head assembly and print platform, print head assembly includes the first powder feeding part, first powder feeding part is mounted with red powder printed material, and the first outlet position of the first powder feeding part is provided with first flow sensor and the first valve；Second powder feeding part is mounted with green powder printed material, and the second outlet position of the second powder feeding part is provided with second flow sensor and the second valve；3rd powder feeding part is mounted with blue powder printed material, and the 3rd outlet port of the 3rd powder feeding part is provided with the 3rd flow sensor and the 3rd valve.According to the principle that color is matched, the color that can be specifically needed after being adjusted to the part by weight of three-primary colours.Specifically, three kinds of flows of the powder printed material of color can be according to being adjusted the need for specific, so as to the printed material of the different colours after the mixed melting that is needed.

Description

A kind of high accuracy color three-dimensional printer and its forming method

Technical field

The present invention relates to a kind of shaped device and forming method, and in particular to a kind of three-dimensional printer and its forming method.

Background technology

3 D-printing, also referred to as increasing material manufacturing or lamination moulding, are the processes that physical object is processed using mathematical model, In process, print object is built by successively dosing material.

The type that the method for three-dimensional fast shaping mainly includes is：Stereolithography or photocuring （Stereolithography, SLA), layer separated growth（Laminated object manufacturing, LOM), choosing Selecting property laser fusion（Selective laser Melting, SLM), fused glass pellet（Fused deposition modeling, FDM)。

At present, the three-dimensional of FDM types on the market（3D）Print most commonly seen, the production of such three-dimensional printer Cost is relatively low, and the operation of printing is more facilitated, and beginner is easily mastered.Its cardinal principle is by wire silk material such as PLA（It is poly- Lactic acid）Melted Deng by high temperature nozzle, then using the continuously extruded of follow-up wire rod, the material of molten is passed through into jet expansion Extrusion, then molten material layers pile up produce three-dimensional body, for example Application No. CN201410827191.9, FDM types have been recorded in the Chinese invention patent application file of CN201510054483.8 and CN201510313735.4 Three-dimensional printer and its operation principle.

However, existing three-dimensional printer print color body when there are problems that it is a lot, because the species of color has very It is various, if being provided which that a kind of silk of specific color is printed for each color, undoubtedly need to set a variety of Silk, but various silks can occupy more space on three-dimensional printer, and various silks need correspondence configuration multiple Printhead, dramatically increases manufacturing cost.

In addition, existing three-dimensional printer occurs in that the melting material that various different colours are formed after being melted using two kinds of silks The scheme of material, however, the limitednumber of its color for producing, application scenario is also limited.

The content of the invention

The main object of the present invention be to provide it is a kind of solve existing three-dimensional printer when 3 D color object is printed without Method completes the problem of high-resolution three-dimension forming objects.

In order to complete above-mentioned purpose, the invention provides a kind of three-dimensional printer, it includes that print head assembly and printing are flat Platform, print head assembly can be independently moved relative to print platform along three-dimensional；Controller respectively with print head assembly and beat Print platform electrical connection；Print head assembly includes the first powder feeding part, and the first powder feeding part is mounted with red powder printed material, and first send The first outlet position of powder part is provided with first flow sensor and the first valve；Second powder feeding part is mounted with green powder printing Material, the second outlet position of the second powder feeding part is provided with second flow sensor and the second valve；3rd powder feeding part is mounted with Blue powder printed material, the 3rd outlet port of the 3rd powder feeding part is provided with the 3rd flow sensor and the 3rd valve；Mixing Melter has the first import, the second import, triple feed inlet and printing nozzle, and first outlet is connected with the first import, and second goes out Mouth is connected with the second import, and the 3rd outlet is connected with triple feed inlet；Weight sensor is provided with print platform；Controller is distinguished With weight sensor, first flow sensor, second flow sensor, the electric connection of the 3rd flow sensor, the first valve, Two valves and the 3rd valve are electrically connected with.

The forming method of the three-dimensional printer that the present invention is provided, it includes print head assembly and print platform, printhead cluster Part can be independently moved relative to print platform along three-dimensional；Controller is electrically connected with print head assembly and print platform respectively Connect；Print head assembly includes the first powder feeding part, and the first powder feeding part is mounted with red powder printed material, the first of the first powder feeding part Outlet port is provided with first flow sensor and the first valve；Second powder feeding part is mounted with green powder printed material, second The second outlet position of powder feeding part is provided with second flow sensor and the second valve；3rd powder feeding part is mounted with blue powder and beats Print material, the 3rd outlet port of the 3rd powder feeding part is provided with the 3rd flow sensor and the 3rd valve；Mixed melting room has First import, the second import, triple feed inlet and printing nozzle, first outlet are connected with the first import, and second outlet and second is entered Mouth is connected, and the 3rd outlet is connected with triple feed inlet；Weight sensor is provided with print platform；Controller is sensed with weight respectively Device, first flow sensor, second flow sensor, the electric connection of the 3rd flow sensor, the first valve, the second valve and Three valves are electrically connected with；

The forming method includes following step：

First, preparation process is performed, starts the switch of three-dimensional printer, the position to print head assembly and print platform carries out school Standard, controller obtains each layer data information of three-dimensional body, and each layer data information includes color data information, and three-dimensional printer is pre- The standby melted material for printing the first color；

Then, powder feeding step is performed, the first powder feeding part adds the first mass parts to mixed melting room under the control of the first valve Red powder printed material, under the control of the second valve the second powder feeding part to mixed melting room add the second mass parts it is green Color powder printed material, the 3rd powder feeding part adds the blue powder of the 3rd mass parts to mixed melting room under the control of the 3rd valve Last printed material；

Then, mixing and melting step, red powder printed material, green powder printed material and blue powder printing material are performed Material obtains the melted material of the first color after generation mixing, melting in mixed melting room；

Then, execution level printing step, the melted material of the first color forms predetermined 3-D graphic on print platform, weight Quantity sensor obtains weight data information and transmits to controller；

Then, if controller preparation prints second melted material of color, color change step, color change step are performed Suddenly it is：Adjust the red powder printed material of the first mass parts, the green powder printed material of the second mass parts and the 3rd mass Part by weight of the blue powder printed material of part in mixed melting room, obtains by after powder feeding step and mixing and melting step To second melted material of color；

Then, layer printing step and color change step are repeated, until completing the shaping of three-dimensional body.

One preferred scheme is that the first powder feeding part and/or the second powder feeding part and/or the 3rd powder feeding part have hollow Spiral powder feeding rod is set in body, hollow cylinder, and the upstream end of hollow cylinder is provided with powder input port, and the downstream of hollow cylinder is set First outlet or second outlet or the 3rd outlet；In powder feeding step is performed, powder printed material enters to hollow along powder input port Cylinder, spiral powder feeding rod drives powder printed material to the first outlet or second outlet of hollow cylinder or the 3rd to export；Holding In row color change step, it is adjusted by the rotating speed for adjusting spiral powder feeding rod.

One preferred scheme is that print head assembly also includes backing material printhead, and backing material printhead can be relative Independently moved along three-dimensional in print platform.

One preferred scheme is that agitating element and heating element heater, agitating element and heating are provided with mixed melting room Element is electrically connected with controller.

One preferred scheme is that three-dimensional printer also includes alarm device, and alarm device is electrically connected with controller；When The dusty material loaded in first powder feeding part and/or the second powder feeding part and/or the 3rd powder feeding part less than after setting value, send out by controller Go out signal control alarm device and send alarm.

The beneficial effect of three-dimensional printer of the invention is：According to the principle that color is matched, to the part by weight of three-primary colours The silk of different specific colors can be obtained after being adjusted.Specifically, the flow of three kinds of powder printed materials of color is equal Can be according to being adjusted the need for specific, so as to the printed material of color for being needed.Agitating element can strengthen three kinds The mixed effect of the dusty material of color.When after the powder in powder feeding part is exhausted or close to be exhausted when, controller The work of alarm device is controlled, alarm device signal an alert makes corresponding operation with the staff for pointing out surrounding.

Brief description of the drawings

The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.

Fig. 1 is the structural representation of three-dimensional printer embodiment of the invention；

Fig. 2 is the connection diagram between the members of three-dimensional printer embodiment of the invention.

Fig. 3 is a kind of schematic cross-section of existing three-dimensional body.

Fig. 4 is existing a kind of printed by three-dimensional printer and the three-dimensional body with supporting part.

Fig. 5 is the schematic diagram of the three-dimensional printer embodiment with backing material printhead of the invention.

Fig. 6 is that have main body on the print platform of the three-dimensional printer embodiment with backing material printhead of the invention Print state schematic diagram during portion.

Fig. 7 be it is of the invention with backing material printhead the preparation of three-dimensional printer embodiment printing backing material when Print state schematic diagram.

Fig. 8 is three-dimensional printer embodiment printing supporting part and suspending part with backing material printhead of the invention Print state schematic diagram.

Fig. 9 is the schematic diagram of another embodiment of three-dimensional printer of the invention.

Figure 10 is the schematic diagram of another embodiment of three-dimensional printer of the invention.

Figure 11 is the schematic diagram of another embodiment of three-dimensional printer of the invention.

Figure 12 is the structural representation of the embodiment of three-dimensional printer of the invention 5th.

Figure 13 is printhead, the first feeding unit, second feeding unit of the embodiment of three-dimensional printer of the invention 5th Structural representation.

Figure 14 is the structural representation of the printhead of the embodiment of three-dimensional printer of the invention 5th.

Figure 15 is the theory three-dimensional object of preparation printing in the memory module of the embodiment of three-dimensional printer of the invention 5th Structural representation.

Figure 16 is the theory three-dimensional object of preparation printing in the memory module of the embodiment of three-dimensional printer of the invention 5th Center section structural representation.

Specific embodiment

First embodiment

The three-dimensional printer of the present embodiment includes print head assembly and print platform, and print head assembly can be relative to print platform edge Three-dimensional is independently moved.Controller is electrically connected with print head assembly and print platform respectively.

As depicted in figs. 1 and 2, print head assembly includes the first powder feeding part 10, the second powder feeding part 20 and the 3rd powder feeding part 30.

First powder feeding part 10 has the first hollow cylinder 11, and the first spiral powder feeding rod 12 is set in the first hollow cylinder 11, The upstream end of the first hollow cylinder 10 is provided with the first powder input port 13, and the downstream of the first hollow cylinder 11 sets first outlet 14.Word " upstream " refers to the front end of powder printed material direct of travel in the first hollow cylinder 11, and word " downstream " refers to The rear end of powder printed material direct of travel in the first hollow cylinder 11.Red powder printed material is loaded in the first hollow In body 11, the position of first outlet 14 is provided with first flow sensor and the first valve, and first flow sensor is used for real-time The flow of the red powder printed material of monitoring first outlet 14 position, and monitoring signals are transmitted to controller 40 in real time.The One flow sensor can use existing poweder flowmeter or powder flow gauge.Red powder printed material is along the first powder input port 13 enter in the first hollow cylinder 10, and the first spiral powder feeding rod 12 drives red powder printed material to the first hollow cylinder 11 First outlet 14 position, controller 40 by adjust the first spiral powder feeding rod 12 rotating speed or the first valve opening it is big It is small and the flow that red powder printed material enters into mixed melting room 50 is adjusted.First valve is preferably control powder The powder formula electromagnetic valve of flowing.

The structure of the second powder feeding part 20 is essentially identical with the structure of the first powder feeding part.Second powder feeding part 20 is hollow with second Second spiral powder feeding rod is set in cylinder, the second hollow cylinder, and the upstream end of the second hollow cylinder is provided with the second powder input port, the The downstream of two hollow cylinders sets second outlet.Green powder printed material in the second hollow cylinder, the position of second outlet Install and be equipped with second flow sensor, second flow sensor is used for the green powder printing material of real-time monitoring second outlet position The flow of material, and monitoring signals are transmitted to controller in real time.Second flow sensor uses existing poweder flowmeter or powder Flowmeter body.Green powder printed material enters to the second hollow cylinder along the second powder input port, and the second spiral powder feeding rod drives green Color powder printed material to the second hollow cylinder second outlet, controller by adjust the second spiral powder feeding rod rotating speed and The openings of sizes of the second valve is adjusted to the flow that green powder printed material enters into mixed melting room 50.

The structure of the 3rd powder feeding part 30 is also essentially identical with the structure of the first powder feeding part.3rd powder feeding part 30 has in the 3rd 3rd spiral powder feeding rod is set in empty cylinder, the 3rd hollow cylinder, and the upstream end of the 3rd hollow cylinder is provided with the 3rd powder input port, The downstream of the 3rd hollow cylinder sets the 3rd and exports.Blue powder printed material in the 3rd hollow cylinder, the 3rd outlet Position is provided with the 3rd flow sensor, and the blue powder that the 3rd flow sensor is used for the outlet port of real-time monitoring the 3rd is printed The flow of material, and monitoring signals are transmitted to controller in real time.3rd flow sensor using existing poweder flowmeter or Powder flow gauge.Blue powder printed material enters to the 3rd hollow cylinder along the 3rd powder input port, and the 3rd spiral powder feeding rod drives Blue powder printed material to the 3rd hollow cylinder the 3rd outlet, controller by adjust the 3rd spiral powder feeding rod rotating speed with And the 3rd the openings of sizes of valve the flow that blue powder printed material enters into mixed melting room 50 is adjusted.

Mixed melting room 50 has the first import 51, the second import 52, triple feed inlet 53 and printing nozzle 54, first outlet 14 are connected with the first import 51, and second outlet is connected with the second import 52, and the 3rd outlet is connected with triple feed inlet 53.Mixed melting Agitating element 41 and heating element heater 42 are provided with room 50, agitating element 41 and heating element heater 42 electrically connect with controller 40 Connect.Weight sensor 43 is provided with print platform 60, weight sensor 43 can be with the weight on real-time monitoring print platform 60 Data, and data-signal real-time Transmission to controller 40.Controller 40 also respectively with first flow sensor 44, second The flow sensor 46 of quantity sensor 45 and the 3rd is electrically connected with.Thus, controller 40 can in real time obtain the first powder feeding part 10 and add Enter the quality to the red powder printed material in mixed melting room 50, can also obtain in real time the second powder feeding part 20 be added to it is mixed The quality of the green powder printed material in melter 50 is closed, the 3rd powder feeding part 30 can also be in real time obtained and is added to mixed melting The quality of the blue powder printed material in room 50.

The forming method includes following step.

First, preparation process is performed, starts the switch of three-dimensional printer, to print head assembly and the position of print platform 60 Calibrated, controller 40 obtains each layer data information of three-dimensional body, and each layer data information includes color data information, three-dimensional Printer preparation prints the melted material of the first color.Controller 40 include a processor, processor by analysis and meter Calculate, the weight proportion for determining the melted material of the first color is:The mass parts of red powder printed material 10 are added, green is added The mass parts of powder printed material 10, add the mass parts of blue powder printed material 10.

Then, powder feeding step is performed, the first powder feeding part 10 adds the first mass parts to mixed melting room 50（10 mass parts） Red powder printed material, the real-time monitoring red powder printed material of first flow sensor 44 is added to mixed melting room 50 Interior weight, and information transfer to controller 40.When amount to 10 mass parts in mixed melting room 50 are added, the first powder feeding Part 10 stops to adding red powder printed material in mixed melting room 50.Second powder feeding part 20 is added to mixed melting room 50 Second mass parts（10 mass parts）Green powder printed material, the real-time monitoring green powder of second flow sensor 45 printing material Material is added to the weight in mixed melting room 50, and information transfer to controller 40, the amount in addition mixed melting room 50 During to 10 mass parts, the control of controller 40 stops the second powder feeding part 20 and prints material to green powder is added in mixed melting room 50 Material.3rd powder feeding part 30 adds the 3rd mass parts to mixed melting room 50（10 mass parts）Blue powder printed material, the 3rd The real-time monitoring blue powder printed material of flow sensor 46 is added to the weight in mixed melting room 50, and information transfer extremely Controller 40, when addition to 10 mass parts, the control of controller 40 stops to adding blue powder in mixed melting room 50 Printed material.By controller 40, first flow sensor 44, the flow sensor 46 of second flow sensor 45 and the 3rd association With coordinating, realize red powder printed material, green powder printed material and blue powder printed material and be added to mix and melt Melt the precise control in room 50, it is possible thereby to realize the shaping of high-precision three-dimensional object.In a kind of alternative embodiment, also may be used To omit first flow sensor 44, the flow sensor 46 of second flow sensor 45 and the 3rd, but controlled by controller 40 The rotating speed of motor processed, motor drive the first spiral powder feeding rod 12, the rotation of the second spiral powder feeding rod or the 3rd spiral powder feeding rod and The dusty material of firm discharge is delivered in mixed melting room 50, while, it is necessary to record the time, according to time and the pass of flow System obtains adding the weight of the powder printed material in mixed melting room 50.Although the accuracy of this alternative is not as sensing The mode of device, but the mixed melting material of different colours can also be obtained.

Then, mixing and melting step, the red powder printed material of 10 mass parts, the green powder of 10 mass parts are performed The blue powder printed material of printed material and 10 mass parts obtains the first after there is mixing, melting in mixed melting room 50 The melted material of color, mixed process certain time melts certain time such as 45 seconds in such as 30 seconds or 1 minute to uniform Or 2 minutes to uniform.

Then, execution level printing step, the melted material of the first color forms predetermined three-dimensional on print platform 60 Figure, weight sensor 43 obtains weight data information, monitors to increased the three-dimensional body of 15 mass parts on print platform 60, , to controller 40, controller 40 is by learning the melted material in mixed melting room 50 after computing for the data message real-time Transmission Gross weight residue should be 15 mass parts, wherein, red printed material, green printed material and blue line print material are in gross weight Quality respectively be 5 mass parts.

Then, if the preparation of controller 40 prints second melted material of color, second melted material of color Theoretical weight is matched:The mass parts of red powder printed material 8 are added, the mass parts of green powder printed material 7 are added, added blue The mass parts of color powder printed material 6.Understood by calculating, perform color change step, color change step is：Control first is sent Powder part 10 is to the red powder printed material that 3 mass parts are added in mixed melting room 50, and the second powder feeding part 20 of control is molten to mixing Melt the green powder printed material that 2 mass parts are added in room 50, the 3rd powder feeding part 30 of control in mixed melting room 50 to adding 1 matter Measure the blue powder printed material of part.Finally, second melted material of color is obtained after mixing and melting step.

In other embodiments, print head assembly also includes backing material printhead, and backing material printhead can be relative to Print platform is independently moved along three-dimensional.Three-dimensional printer also includes alarm device, and alarm device electrically connects with controller Connect；After the dusty material loaded in the first powder feeding part and/or the second powder feeding part and/or the 3rd powder feeding part is less than setting value, control Device processed sends signal control alarm device and sends alarm.One or more colour recognitions sensing is provided with mixed melting room 50 Device, Tansducer For Color Distiguishing is electrically connected with controller, and Tansducer For Color Distiguishing can be strengthened to being obtained in mixed melting room 50 The color of mixed melting printed material be monitored and measure, there is error when it detects the color in mixed melting room 50 Afterwards, detection signal is transmitted to controller 40 by Tansducer For Color Distiguishing, the feedback control of controller 40 adjust the first powder feeding part, Second powder feeding part and the 3rd powder feeding part are added to the amount of the dusty material in mixed melting room 50, are achieved in three kinds of coloured powders Proportion adjustment of the material in mixed melting room 50, finally realizes the regulation to mixed melting indoor color, so as to obtain one kind Color accuracy three-dimensional body higher.Tansducer For Color Distiguishing is preferably disposed on the nozzle location of mixed melting room.It is molten in mixing The upper lateral part melted in room 50 sets an air blower, and the controlling switch of air blower is electrically connected with controller 40, and air blower preferably may be used To provide the air-flow of continuation rotation, the air-flow of rotation drives red powder printed material, green powder printed material and blueness Powder printed material is pre-mixed.Negative pressure device can also be set in mixed melting room 50, negative pressure device is to indoor offer negative pressure gas Stream, negative-pressure air-flow especially needs to provide in the position of the first import 51, the second import 52 and triple feed inlet 53, and negative-pressure air-flow sets It is equipped with and helps different dusty materials and quickly and completely entered into along the first import 51, the second import 52 and triple feed inlet 53 In mixed melting room 50.In order that the mixed melting material that obtains of mixed melting room 50 is easier to be sprayed from printing nozzle 54, One screw rod can be set in mixed melting room 50, mixed melting material can be accelerated by printing after electric motor driven screw rotation Nozzle 54 sprays.The aperture position of printing nozzle 54 is provided with electromagnetic valve, and electromagnetic valve is electrically connected with controller 40, when mixed When mixed melting, electromagnetic valve is in closure state to the dusty material of the shades of colour in conjunction melter 50, until face When the color that color identification sensor detects the melted material in mixed melting room 50 reaches the color of theory demands, control The electromagnetic valve of the position of 40 open printing nozzle of device 54.

First flow sensor, second flow sensor, the 3rd flow sensor, Tansducer For Color Distiguishing, weight sensing Device directly or indirectly can be connected with controller.Connected mode can be wired connection or wireless connection, and wireless connection is for example For WiFi is connected, bluetooth connection etc..Sensor can send signal antenna including one, and supplying cell, controller includes one Receive signal antenna, supplying cell.Controller includes a PLC program or chip processor, or controller is exactly One computer or mobile phone, staff can realize the control to three-dimensional printer by the computer or mobile phone.

Second embodiment

Existing three-dimensional printer there are problems that a lot when hanging object is printed, or even cannot print hanging object.For example, such as It is a kind of existing three-dimensional body with suspending part shown in Fig. 3, the three-dimensional body includes main part 110 and suspending part 111, Suspending part 111 is supported due to bottom surface without other, is limited to gravity factor, therefore just cannot or be difficult in 3 D-printing real The shaping of existing suspending part 111.When needing to print this three-dimensional body with suspending part 111 with three-dimensional printer, such as Fig. 4 institutes Show, three-dimensional printer typically prints main part 110 first, then, print supporting part 112, so can just continue in branch Suspending part 111 is printed on support part 112.However, this printing type needs the excessive backing material of consumption, resource is not only caused Waste, and the print job time can be extended, reduce the operating efficiency of three-dimensional printer.

As shown in figure 5, the three-dimensional printer with backing material printhead provided for the present embodiment, the three-dimensional printer Including print head assembly and print platform 120.

Print head assembly can be independently moved relative to print platform 120 along three-dimensional.Controller 130 respectively with printing Head assembly and print platform 120 are directly or indirectly electrically connected, and controller can be a single-chip microcomputer or chip processor or electricity Brain or PLC（Programmable logic controller (PLC)）Program.Print head assembly includes the first printhead 141, the second printhead 142 and the 3rd Printhead 143.First printhead 141 is mounted with type body material, and the first printhead 141 can be with respect to print platform 120 along three Dimension is directionally independently mobile.Second printhead 142 is mounted with printing backing material, and the second printhead 142 can be with respect to print platform 120 independently move along three-dimensional.

First printhead 141 and the second printhead 142 can take the mode of wire silk fusion sediment to be printed, silk The transmission of shape material, the process of melting extrusion shaping use the printhead of existing three-dimensional printer.For example, the first printhead 141 and second printhead 142 can be using U.S. MakerBot companies with the transmission of the silks such as PLA, ABS, melting, printing work( The printhead of energy.Type body material and printing backing material can select the existing filamentary material for 3 D-printing, example Such as PLA（PLA）, ABS (acrylonitrile-butadiene-styrene copolymer), PVC（Polyvinyl chloride）, PC（Makrolon）.

Binding agent is mounted with 3rd printhead 143, the 3rd printhead 143 can be a spray gun, and spray gun is binding agent It is sprayed in supporting plate 150.3rd printhead 143 can also be an application device, and application device can be in controller 130 Certain thickness binding agent is smeared under control in supporting plate 150, the effect of binding agent is that the bottom surface of supporting part is adhered to Firmly in supporting plate 150, can so avoid the position of supporting part from moving, printed matter can be then caused in the event of position movement The deviation of body.Binding agent can for example select following material：Cyanoacrylates, thixotropy (pseudoplastic behavior) cyanoacrylate Acid esters binding agent, the thixotropy a- cyanoacrylates of stable storing, the agent of fast solidification cyanoacrylate ester knot, cyano group The priming paint of acrylate adhesives, anaerobic curable adhesive, the anaerobic adhesive of high intensity stable storing, industrial glue Water, medical glue etc..

Supporting plate component has the travel mechanism and supporting plate 150 for linking together, and travel mechanism drives the phase of supporting plate 150 Moved on three-dimensional for print platform 120.The edge part of supporting plate 150 is flexible edge part, and flexible edge part is for example It is silica gel, when supporting plate 150 moves close to main part 110, flexible edge part can play certain cushioning effect, keep away Exempt to cause its surface after hardness strikes main part 110 damage, or hardness is clashed into and causes the position of main part 110 to occur It is mobile, and the deviation that the movement of this position is caused can cause the precise decreasing of three-dimensional body.Flexible edge part is also provided with Range sensor, range sensor for example can be infrared sensor or the range sensor based on other principles, work as sensor The distance apart from main part 110 is sensed less than after certain distance, controller 130 is controlled and reduces the shifting of mobile supporting plate 150 Dynamic speed, range sensor can be a touching switch.Range sensor, the first printhead 141, the second printhead 142, Three printheads 143, print platform 120, supporting plate 150 are directly or indirectly electrically connected with controller 130, controller 130 Thus their work is controlled.For example in a kind of mode, the rotation of the controlled motor of controller 130, motor passes through drive disk assembly Realize to the first printhead 141, the second printhead 142, the 3rd printhead 143, print platform 120, supporting plate 150 mobile control System.

The forming method of the three-dimensional printer with backing material printhead of the present embodiment includes following step.

First, preparation process is performed, starts the switch of three-dimensional printer, to print head assembly and the position of print platform 120 Put and calibrated, controller 130 obtains each layer data information of three-dimensional body, and three-dimensional body is three-dimensional body as shown in Figure 4, The three-dimensional body has main part 110, suspending part 111 and a supporting part 112, suspending part 111 respectively with supporting part 112 and main part 110 connections.

Then, as shown in fig. 6, the printing step in executive agent portion 110, the first printhead 141 type body material by Layer is deposited on the first height 121 on the up to print platform 120 of print platform 120, is consequently formed main part 110, is performing this When individual step, supporting plate 150 is distant apart from print platform 120, and in other words, supporting plate 150 is not in print platform In 120 view field.

Then, as shown in fig. 7, the step of performing mobile supporting plate 150, it is three-dimensional that controller 130 sends instruction preparation printing The supporting part 112 of object.A part for the edge part of supporting plate 150 is mobile and touches to main part 110.Specifically, moving machine Structure drives supporting plate 150 to the second height 22 of the top of print platform 120, and supporting plate 50 is moved to close with first rate first The position of the vertical portion of main part 110, the sensor sensing of flexible edge part is less than apart from the distance of main part 110 to it and sets After set a distance, controller 130 controls supporting plate 150 with the second speed slowly near main part 110, until flexible edge part's touching To after supporting part 110, supporting plate 150 then stops the movement in horizontal direction.Because flexible edge part has elasticity, therefore can be with Good cushioning effect is played, flexible edge part preferably uses energy absorbing material or space wadding, and space wadding can be with maximum limit Degree reduces percussion of the supporting plate 150 to main part 110.Second height 122 is in the lower section of the first height 121.

Then, as shown in figure 8, perform supporting part 112 printing step, the second printhead 142 in supporting plate 150 successively Printing forms supporting part 112.Because the position that supporting plate 150 can move to the second height 122 is used to undertake support portion 112, Therefore supporting part 112 needs the highly significant of printing less.Existing supporting part 112 needs the normal level of printing for first is high Degree 121.Finally, the printing step of suspending part 111 is performed, the successively printing on supporting part 112 of the first printhead 141 forms hanging Portion 111.Suspending part 111 prints the printing that whole three-dimensional body can be just completed after finishing.

3rd embodiment：

The present embodiment is essentially identical with above-mentioned second embodiment, is only given with regard to difference is discussed in detail below.

, less than the density of main part 110, the size of density can be according to specific for the density of the supporting part 112 of the present embodiment Printing type determines that printhead extrudes a thread printed material of melting, horizontal filamentary material and longitudinal direction in supporting plate 150 Filamentary material overlap intersect, eventually form a three-dimensional body for Rotating fields.Main part 110 generally requires density knot higher Structure, and supporting part 112 due to play certain supporting role just for the sake of temporary, therefore can print to be formed it is loose, The relatively low structure of density.After three-dimensional body shaping, then need to remove supporting part 112.The density and suspending part of main part 110 111 density is identical.

The print head assembly of the present embodiment also includes the 3rd printhead 143, and binding agent is mounted with the 3rd printhead 143, Before supporting part printing step is performed, the 3rd printhead 143 smears a layer binder in supporting plate 150, supporting part 112 Ground floor（Following bottom）It is covered on the binding agent in supporting plate 150.Due to the present embodiment supporting part 112 density compared with It is small and more loose, therefore the second printhead 142 in supporting plate 150 when printing backing material, the bottom surface of supporting part 112 Position movement is susceptible to, after spraying a layer binder in the supporting plate 50, binding agent can be to the bottom surface of supporting part 112 The effect of being adhered fixed is played, so as to the unexpected position for avoiding supporting part 112 is moved.

In other embodiments, supporting plate 150 is circular base slab, and circular base slab can rotate in a circumferential direction around its center of circle. First area, second area, the 3rd region can be marked off on circular base slab, wherein, first area is in printing first As the reserved area in the portion that undertakes support during three-dimensional body, portion is undertaken support when second area is as second three-dimensional body of printing Reserved area, the 3rd region print the 3rd three-dimensional body when as the portion that undertakes support reserved area.When printing is completed During first three-dimensional body, the supporting part or binding agent remained on the first area on circular base slab can hinder second three-dimensional The printing of object.Even if on the supporting plate after removal supporting part, this blanketing is still present, because in removal supporting part When, the bottom surface of supporting part is likely to residual solids in the upper surface of circular base slab, if directly changing circular support Plate is cleaned to it, then can reduce operating efficiency.Now, after circular base slab rotates to an angle around its center of circle, make Obtaining second projection of the suspending part of three-dimensional body can just in second area, and second area is clean surface, therefore Can be as the printing of supporting part.After the printing of second three-dimensional body of completion, circular base slab is certain around the rotation of its center of circle After angle so that the 3rd projection of the suspending part of the three-dimensional body of preparation printing just in the 3rd region, due to the 3rd area Domain is clean surface, therefore can be as the 3rd print area of the supporting part of three-dimensional body, the support in the 3rd region After the completion of the printing in portion, then complete the 3rd print procedure of the suspending part of three-dimensional body.

Fourth embodiment

The three-dimensional printer of the present embodiment is essentially identical with first embodiment, and the supporting plate of first embodiment can be applied in this reality Apply on the three-dimensional printer of example.Also, simultaneously on this basis, the present embodiment has made further improvement.As shown in figure 9, this reality Apply example and a kind of three-dimensional printer is provided, it includes print head assembly 230, print platform 213, the power list of controller 220 and first Unit 240.

Print head assembly 230 is respectively relative to print platform 210 and is independently moved along three-dimensional.Controller 220 is distinguished Electrically connected with print head assembly 230 and print platform 213.In a kind of type of drive, the rotation of the motor of controller 220 is provided Power, motor drives the movement of print platform 213 or print head assembly 230 by drive disk assembly.First power unit 240 is loaded There is foaming agent, the first power unit 240 is supplied to foaming agent in melter 233 and printed material mixed melting.

As shown in Figure 10, print head assembly 230 includes melter 233, and printing silk 238 is by driving wheel 239 and support The cooperation of wheel 241 provides power, and printing silk 238 can be progressed into melter 233.Printing silk 238 is in melter According on preset program layer by layer deposition to print platform 213 after melting in 233.

Type body material is the three-dimensionally shaped silks of PLA or the three-dimensionally shaped silks of ABS or the three-dimensionally shaped silks of PP.It is preferred that Ground, the first power unit 240 includes setting spiral powder feeding rod in cavity, spiral powder feeding rod and motor, cavity, and spiral powder feeding rod is used Motor drives, and drives spiral powder feeding rod that foaming agent is brought into melter under the work of motor, and motor is electric with controller 220 Property connection.

When supporting part 112 are printed, the first power unit 240 is added to foaming agent in melter 233, foaming agent Cause that the volume of printed material is expanded with after the printing mixed melting of silk 138, the melting printed material layer by layer deposition of expansion Supporting part 112 is formed in printing flat 213, the density of the density less than undressed printing silk 238 of supporting part 112 makes The weight of backing material is accordingly reduced, so as to realize the purpose of reduces cost.Especially in large-sized object, such as human body Model, the shaping of building model, the cost savings highly significant of backing material.The print head assembly 230 of the present embodiment only has One printhead, the printhead can be as the printing of main part 110, supporting part 112 and suspending part 111, when type body portion When 110, the first power unit 240 is idle, that is, foaming agent do not enter in melter 233.When printing is supported When portion 112, the first power unit 240 is added to foaming agent in melter 233, and foaming agent mixes with printing silk 238 Backing material is formed after melting, backing material layer by layer deposition forms supporting part 112 on print platform 213.

The forming method of the three-dimensional printer with backing material shaping function of the present embodiment includes following step.

First, preliminary step is performed, keeps three-dimensional printer in running order.

Then, the forming step of three-dimensional body main part 110 is performed, after print head assembly 230 melts printing silk 238 Layer by layer deposition forms the main part 110 of three-dimensional body on print platform 213.

Then, perform controller and judge step, when controller judge to need the supporting part 112 of printing three-dimensional body when Wait, start the first power unit 240 and work.

Then, the printing step of supporting part 112 is performed, the first power unit 240 works, motor drives handle after screw rod rotation Foaming agent is brought into melter 233 and forms backing material with printing silk 238 mixed melting, and printed material is adding foaming agent Volume is expanded afterwards.Print head assembly 230 on the backing material layer by layer deposition of mixed melting to print platform 213 forming Supporting part 112.

Finally, after the printing step of supporting part 112 is completed, printing forms suspending part 111 on supporting part 112, completes The shaping of whole three-dimensional body.From such scheme, when supporting part is printed, foaming agent is added in melter, Cause that the volume of printed material is expanded after foaming agent and printed material mixed melting, the melted material layer by layer deposition of expansion exists Supporting part is formed on print platform, the density of supporting part is accordingly reduced, and the weight of the backing material for using accordingly is reduced, so that real The purpose of existing reduces cost.Especially for large-sized object, such as shaping of human body, building model or material object, backing material Cost savings highly significant.

5th embodiment

The three-dimensional printer of the present embodiment is essentially identical with fourth embodiment, only makes description with regard to difference below.Such as Figure 11 Shown, print head assembly includes the first printhead 231 and the second printhead 232.Type body is mounted with first printhead 231 Material, the first printhead 231 can be independently moved with respect to print platform 213 along three-dimensional.Second printhead 232 includes melting Room 233, melter 233 has first through hole and the second through hole, and printing backing material is along first through hole（The side or top of melter Face）Into in melter 233, foaming agent is delivered to melter 233 by the first power unit along the second through hole.

First printhead 231 completes the printing step of main part 110 and suspending part 111.Type body portion 110 when Wait, the second printhead 232 completed foaming agent and printing silk mixed melting the step of, volume is expanded.Second dozen First 232 preparation work of print, the second printhead 232 shape on print platform 213 the backing material layer by layer deposition after volumetric expansion Into supporting part 112, this mode saves the time compared to first embodiment.Type body material be the three-dimensionally shaped silks of PLA or The three-dimensionally shaped silks of ABS or the three-dimensionally shaped silks of PP, printing backing material be the three-dimensionally shaped dusty materials of PLA or ABS it is three-dimensional into Type dusty material or the three-dimensionally shaped dusty materials of PP.

Compared to a printhead of first embodiment, two technical schemes of printhead of the present embodiment can be carried significantly High workload efficiency, in the first embodiment, a printhead is after the printing step for completing main part 110, it is necessary in melter Mixing adds the printing step that can just continue supporting part 112 after foaming agents in 233, it is clear that the operating efficiency of this mode compared with Slowly.Comparatively speaking, after first printhead 231 of the present embodiment completes the print job of main part 110, the second printhead 232 is Through the mixed melting step of foaming agent and printed material can be previously-completed, so as to be obviously improved operating efficiency.

It is individual in other embodiments, the position of the second through hole is provided with magnetic valve.First power unit includes cavity, spiral shell Rotation powder feeding rod and motor, set spiral powder feeding rod in cavity, spiral powder feeding rod is driven with motor, and spiral shell is driven under the work of motor Rotation powder feeding rod is brought foaming agent in melter 233 into, and motor, magnetic valve are electrically connected with controller.Adopt when in this way, The backing material of dusty material is more rapid with foaming agent mixed process, uniform, and more preferably, operating efficiency is improved mixed effect. In preferred scheme, one blowning installation is set in the position of the second through hole, blowning installation is uniformly dispelled foaming agent molten Melt in room 233.

In some preferred embodiments, the printing step of supporting part 112 includes initial stage and later stage.In the early stage Stage, foaming agent is added to melter with the speed of first flow, and during the late stages of developmet, foaming agent is added with the speed of second flow Enter to melter, first flow is more than second flow.Therefore, the density of the backing material that the stage is formed is less than rear in the early stage The density of the backing material that stage phase is formed, resulting in the different supporting part 112 of the density of diverse location.

In some preferred embodiments, supporting part printing step includes initial stage, mid-term stage and later stage. Initial stage, foaming agent is added to melter with the speed of first flow, and in mid-term stage, foaming agent is with the speed of second flow Rate is added to melter, and during the late stages of developmet, foaming agent is added to melter with the speed of the 3rd flow；First flow is more than Second flow, second flow is more than the 3rd flow, and the 3rd flow is zero.The density of the backing material that the stage is formed is the in the early stage One density, mid-term stage formed backing material density be the second density, the backing material for being formed during the late stages of developmet it is close It is triple density to spend；First density is less than the second density, and the second density is less than the master of triple density, triple density and three-dimensional body Body portion density is identical.Thus, the density of supporting part 112 includes that the first density supporting part, the second density are supported successively from bottom to top Portion and triple density supporting part, triple density supporting part are identical with original print silk density, and such mode contributes to vacantly The bottom surface in portion 111 is molded on triple density supporting part 112.

Sixth embodiment

The 3 D-printing of the present embodiment has made further improvement on the basis of several embodiments above.As shown in figure 12, The three-dimensional printer of the present embodiment includes print head assembly, print platform 310 and controller 320.Print head assembly has multiple Printhead, the print head assembly of the present embodiment includes the first printhead 331, the second printhead 332 and the 3rd printhead 333.Beat Print head assembly can be independently moved relative to print platform 310 along three-dimensional.Controller 320 respectively with the first printhead 331, The electrical connection of second printhead 332, the 3rd printhead 333 and the controlling of print platform 310.For example in a kind of mode, controller The rotation of 320 controlled motors, motor is realized printing the first printhead 331, the second printhead the 332, the 3rd by drive disk assembly First 333, the mobile control of print platform 310.

A kind of printing silk of color is mounted with each printhead, specifically, white is loaded in the first printhead 331 Printing silk, loads red printing silk in the second printhead 332, blue line print silk is loaded in the 3rd printhead 333.Printing Silk is PLA（PLA）Three-dimensionally shaped silk or ABS（Acrylonitrile-butadiene-styrene terpolymer）Three-dimensionally shaped silk Material or PP（Polypropylene）Three-dimensionally shaped silk or PVC（Polyvinyl chloride）Three-dimensionally shaped silk or（PE）The three-dimensionally shaped silk of polyethylene Material.Printing silk is specifically also an option that other colors, such as yellow, green, grey.

As shown in figure 13, printhead includes melter 334, and printing silk 335 is after melting in melter 334 from nozzle 339 spray, and according on preset program layer by layer deposition to print platform 310.Printing silk 335 can lean on two delivery wheels to move In printing silk 335 to melter 334, two delivery wheels include a driving wheel 336 and a driven pulley 337, driving wheel 336 Can be rotated by motor.The distal end for printing silk 235 is wrapped on silk disk, and silk disk is suspended on the machine of three-dimensional printer On frame.

As shown in figure 14, the first power unit includes the first cavity 341, the first spiral powder feeding rod 342 and the first motor 343, first spiral powder feeding rod 342 is set in the first cavity 341, the first spiral powder feeding rod 342 is driven with the first motor 343, Drive the first spiral powder feeding rod 342 that glass fibre 344 is brought into melter 334 under the work of the first motor 343, the first electricity Machine 343 is electrically connected with controller 320.Controller 320 controls the first spiral by controlling the rotating speed of the first motor 343 The rotating speed of powder feeding roller 342, the final control for realizing supplying the first power unit powder speed.In other embodiments, the first cavity One the first electromagnetic valve is set at 341 first outlet 345, and the size of the first electromagnetic valve can be carried out according to uninterrupted Regulation and control, the first electromagnetic valve can also realize the regulation for powder speed.First power unit is mounted with glass fibre 344, first Power unit is interior supplied to melter 334 glass fibre 344 and prints the mixed melting in melter 334 of silk 335.

The schematic structure of the second power unit refers to the structure of above-mentioned first power unit, and they are essentially identical.Second Power unit includes setting the second spiral powder feeding rod in the second cavity, the second spiral powder feeding rod and the second motor, the second cavity, the Two spiral powder feeding rods are driven with the second motor, and the second spiral powder feeding rod is driven under the work of the second motor plastics softening agent band Enter to melter 334, the second motor is electrically connected with controller 320.The rotating speed that controller 320 passes through the second motor of control, And then the rotating speed of the second spiral powder feeding roller of control, it is final to realize to the second power unit for the control of powder speed, implement at other In example, second electromagnetic valve is set, the size of the second electromagnetic valve can be according to flow at the second outlet of the second cavity Size is regulated and controled, and the second electromagnetic valve can also realize the regulation for powder speed.Second power unit is mounted with plastics softening Agent, the second power unit is interior supplied to melter 334 plastics softening agent and prints the mixed melting of silk 335.Plastics softening agent Can specifically select：PVC（Polyvinyl chloride）Softening agent, PE（Polyethylene）Softening agent or PP（Polypropylene）Softening agent or other are right Answer the softening agent of printed material.

Glass fibre, the addition of plastics softening agent are adjusted according to specific needs.It is general to arrive percentage 5/1000ths One of, with specific reference to needing to add different amounts of plastics softening agent or glass fibre, printed with the melting for obtaining different softness numberes Material, finally obtains the three-dimensional body of different softness numberes.

The forming method of the high accuracy color three-dimensional printer of the present embodiment includes following step.The present embodiment preparation is beaten Print three-dimensional body as shown in figure 15, in a storage module, the three-dimensional body 350 has the data information memory of the three-dimensional body Lower portion 351, center section 352 and upper portion 353, wherein lower portion 351 for white, center section 352 for it is red, Upper portion 353 is grey.As shown in figure 16, center section 352 specifically includes Part I 354, Part II 355 and the 3rd Part 356, the wherein hardness of Part I 354 are identical with the hardness of printing silk 335, and the hardness of Part II 355 is more than beats Print the hardness of silk 335, the hardness of the hardness less than printing silk 335 of Part III 356.

Then, printing silk color selecting step is performed, a kind of silk printing of color is selected, due to the three of preparation printing It is white to tie up the lower portion 351 of object, therefore it is white to select the first to print the color of silk first.Controller 320 is controlled Make the first printhead 331 to work, the first printhead 331 drives the printing silk of white to be deposited on print platform 310 after melting Form lower portion 351.

Then, after the printing of lower portion 351 is finished, the print procedure of center section 352, controller 320 are proceeded by Control the second printhead 332 that red silk is deposited on print platform 310 after melting in melter 334 and form center section 352。

Execution judges step, and controller 220 sends judgement signal, judges to perform printing Part I 254 or Part II 255 or the order of Part III 256.When the order of printing Part I 254 is performed, selected printing silk is in melter Formation Part I 254 on print platform 210 is deposited in 234 after melting.When the order of printing Part II 255 is performed, First feeding unit is supplied to glass fibre 244 in the melter of the second printhead 232 and printing silk according to given pace Formation Part II 255 on print platform 210 is deposited on after mixed melting.When the order of printing Part III 256 is performed, the Two feeding units are added to plastics softening agent in the melter of the second printhead 232 according to given pace and are melted with printing silk Print platform 210 is deposited on after mixing and forms Part III 256.Specifically, because Part I 254 is in lower end, therefore control Device 220 controls to print Part I 254 first, then prints Part II 255, finally prints Part III 256.When printing first When part 254, because the hardness that Part I 254 needs is identical with the hardness of printing silk, therefore it may only be necessary to directly handle It is deposited on print platform 210 after red printing silk melting.After the completion of Part I 254 is printed, second is proceeded by The printing of part 255, the hardness of the hardness more than printing silk of Part II 255, controller 220 sends signal, starts first Feeding unit works, and the first feeding unit is interior supplied to melter 234 glass fibre according to the speed of first flow and prints Silk mixed melting.The hardness of the printing silk after mixed melting is greater than hardness of printing silk itself, after mixed melting Printed material layer by layer deposition forms Part II 255 on print platform 210.Part II 255 print after the completion of, start into The printing of row Part III 256, the hardness of the hardness less than printing silk of Part III 256, controller 220 sends signal, opens Dynamic second feeding unit work, the second feeding unit is supplied to plastics softening agent in melter 234 according to second flow speed With printing silk mixed melting.The hardness of the printing silk after mixed melting is less than hardness of printing silk itself, and mixing is molten Printing silk layer by layer deposition after melting forms Part III 256 on print platform.

Finally, above-mentioned silk color selecting step and interpretation step are repeated, until complete whole three-dimensional body into Type, forms high accuracy 3 D color object.

From such scheme, single silk is obtained in diverse location according to can adjust hardness the need for specific 3 D color object with different hardness.

7th embodiment

The three-dimensional printer of the present embodiment is essentially identical with the 5th embodiment, is only described in detail with regard to difference below.

The three-dimensional printer of the present embodiment also includes case hardness sensor, and case hardness sensor can be ultrasonic hardness Sensor or other existing sensors for being suitable for determining surface of solids hardness.Case hardness sensor is used to detect to be beaten The hardness of the three-dimensional body formed on print platform, case hardness sensor is electrically connected with the controller.

Controller has comparison module and memory module.The hardness data that comparison module detects case hardness sensor It is compared with the hardness data in memory module.After first forming step of three-dimensional body is completed, it may be necessary to repeat The three-dimensional body is printed, to form second, the three-dimensional body of three or more duplicate printings.Often complete a three-dimensional body Shaping after, case hardness sensor is the detection that completes to the hardness on the surface of the three-dimensional body and obtains hardness data.

The setting that the present embodiment passes through comparison module and memory module, increased a function for hardness calibration, specific real Now the step of calibration function is as follows.After first forming step of three-dimensional body is completed, case hardness sensor obtains the One hardness data of the Part I of three-dimensional body, Part II and Part III, comparison module the hardness data with deposit Hardness data in storage module is compared to each other and sends sentences segment signal.Hardness data in memory module is theoretical hardness data, Because the structure of different printers is different, external environment such as temperature, humidity is also different, according to the theoretical hardness data-printing shape Into actual hardness and theoretical hardness data of three-dimensional body can there is deviation, also, this degree of deviation is possible to larger and super Cross certain scope.By program setting, if hard in the hardness data that detects of case hardness sensor and memory module There is deviation in degrees of data, and deviation exceedes certain threshold value.Controller then accordingly adjusts the first feeding unit and adds to printhead Melter in glass fibre speed, or the second feeding unit of regulation adds the speed of plastics softening agent to melter Rate.Specifically, when the hardness that case hardness sensor detects the Part II of three-dimensional body is less than theoretical hardness, During the same position of second three-dimensional body of printing, controller then accordingly accelerates the first feeding unit and adds the glass to melter The speed of glass fiber, after glass fibre adds speed to improve, the three-dimensional obtained after glass fibre and printing silk mixed melting The hardness of object increases therewith.For another example, when the hardness that case hardness sensor detects the Part III of three-dimensional body is more than When theoretical hardness, in the same position of second three-dimensional body of printing, controller then accordingly accelerates the second feeding unit Add to the plastics softening agent in melter speed, when plastics softening agent addition speed improve after, plastics softening agent with beat The hardness of the three-dimensional body obtained after print silk mixed melting is decreased.

8th embodiment

In the sixth embodiment, the first printhead 231 is used to print lower portion 251, and the second printhead 232 is used to print centre Part 252, the 3rd printhead 233 is used to print upper portion 253.Second printhead of the present embodiment includes the first child print Head, the second child print head and the 3rd child print head.Wherein, the first child print head, the second child print head and the 3rd child print head are equal Be to load red printing silk, the second printhead dedicated for printing the red center section of three-dimensional body, the present embodiment it is red Color center section also includes Part I, Part II and Part III.First child print head dedicated for printing Part I, When Part I is printed, then combined fiberglass and printing silk form the printing material that hardness is strengthened to the second child print head Material, is finally deposited on and Part II is formed on print platform；Meanwhile, the 3rd child print head then mixed plastic softening agent and printing silk Material forms the printed material of hardness reduction.This printing type can be obviously improved the shaping efficiency of three-dimensional body.

Claims

1. a kind of high accuracy color three-dimensional printer, including：

Print head assembly；

Print platform, the print head assembly can be independently moved relative to the print platform along three-dimensional；

Controller, electrically connects with the print head assembly and the print platform respectively；

Characterized in that, the print head assembly includes：

First powder feeding part, is mounted with red powder printed material, and the first outlet position of the first powder feeding part is provided with first Flow sensor and the first valve；

Second powder feeding part, is mounted with green powder printed material, and the second outlet position of the second powder feeding part is provided with second Flow sensor and the second valve；

3rd powder feeding part, is mounted with blue powder printed material, and the 3rd outlet port of the 3rd powder feeding part is provided with the 3rd Flow sensor and the 3rd valve；

Mixed melting room, with the first import, the second import, triple feed inlet and printing nozzle, the first outlet and described One import is connected, and the second outlet is connected with second import, and the 3rd outlet is connected with the triple feed inlet；

Weight sensor is provided with the print platform；

The controller respectively with the weight sensor, the first flow sensor, the second flow sensor, described 3rd flow sensor, the first valve, the second valve and the 3rd valve are electrically connected with.

2. high accuracy color three-dimensional printer according to claim 1, it is characterised in that the first powder feeding part and/or The second powder feeding part and/or the 3rd powder feeding part have setting spiral powder feeding rod, institute in hollow cylinder, the hollow cylinder The upstream end for stating hollow cylinder is provided with powder input port, and the downstream of the hollow cylinder sets the first outlet or described second Outlet or the 3rd outlet.

3. high accuracy color three-dimensional printer according to claim 2, it is characterised in that the print head assembly also includes Backing material printhead, the backing material printhead can be independently moved relative to the print platform along three-dimensional.

4. high accuracy color three-dimensional printer according to any one of claim 1 to 3, it is characterised in that

Be provided with agitating element and heating element heater in the mixed melting room, the agitating element and the heating element heater respectively with The controller is electrically connected with.

5. high accuracy color three-dimensional printer according to any one of claim 1 to 3, it is characterised in that

The three-dimensional printer also includes alarm device, and the alarm device is electrically connected with the controller.

6. a kind of forming method of high accuracy color three-dimensional printer, three-dimensional printer includes：

Print head assembly；

Controller；

Characterized in that, the print head assembly includes：

Weight sensor is provided with the print platform；

The controller respectively with the weight sensor, the first flow sensor, the second flow sensor, described 3rd flow sensor, the first valve, the second valve and the 3rd valve are electrically connected with；

The forming method includes following step：

First, preparation process is performed, starts the switch of the three-dimensional printer, to the print head assembly and the print platform Position calibrated, the controller obtains each layer data information of three-dimensional body, and each layer data information includes color Data message, the three-dimensional printer preparation prints the melted material of the first color；

Then, powder feeding step is performed, the first powder feeding part adds to the mixed melting room under the control of first valve Enter the red powder printed material of the first mass parts, the second powder feeding part is to described under the control of second valve Mixed melting room adds the green powder printed material of the second mass parts, the described 3rd under the control of the 3rd valve Powder feeding part adds the blue powder printed material of the 3rd mass parts to the mixed melting room；

Then, mixing and melting step, the red powder printed material, the green powder printed material and the indigo plant are performed Color powder printed material obtains the melted material of the first color after generation mixing, melting in the mixed melting room；

Then, execution level printing step, the melted material of the first color forms predetermined three on the print platform Dimension figure, the weight sensor obtains weight data information and transmits to controller；

Then, if the controller preparation prints second melted material of color, color change step, the face are performed Color change step is：The red powder printed material of the first mass parts, the green powder of the second mass parts is adjusted to beat Part by weight of the blue powder printed material of print material and the 3rd mass parts in the mixed melting room, by described Second melted material of color is obtained after powder feeding step, the mixing and melting step；

Then, the layer printing step and the color change step are repeated, until completing the shaping of three-dimensional body.

7. the forming method of high accuracy color three-dimensional printer according to claim 6, it is characterised in that described first send Powder part and/or the second powder feeding part and/or the 3rd powder feeding part have setting spiral in hollow cylinder, the hollow cylinder Powder feeding rod, the upstream end of the hollow cylinder is provided with powder input port, and the downstream of the hollow cylinder sets the first outlet Or the second outlet or the 3rd outlet；

In the powder feeding step is performed, powder printed material enters to the hollow cylinder, the spiral along the powder input port Powder feeding rod drives powder printed material to the first outlet or the second outlet of the hollow cylinder or the described 3rd to go out Mouthful.

8. the forming method of high accuracy color three-dimensional printer according to claim 6, it is characterised in that the printhead Component also includes backing material printhead, and the backing material printhead can be relative to the print platform along three-dimensional independence Ground is mobile.

9. the forming method of the high accuracy color three-dimensional printer according to any one of claim 6 to 8, its feature exists In,

It is provided with agitating element and heating element heater in the mixed melting room, the agitating element and the heating element heater are and institute State controller electric connection.

10. the forming method of the high accuracy color three-dimensional printer according to any one of claim 6 to 8, its feature exists In,

The three-dimensional printer also includes alarm device, and the alarm device is electrically connected with the controller；When described first The dusty material loaded in powder feeding part and/or the second powder feeding part and/or the 3rd powder feeding part is described less than after setting value Controller sends signal and controls the alarm device to send alarm.