CN106738868A - Three-dimensional printer and its forming method with surface post-processing function - Google Patents

Abstract

The present invention relates to a kind of three-dimensional printer with surface post-processing function, it includes print head assembly, print platform, and print head assembly can be independently moved relative to print platform along three-dimensional；Controller is electrically connected with print head assembly and print platform respectively；Print head assembly has multiple printheads, and a kind of printing silk of color is mounted with each printhead, and printhead includes melter, printing silk after being melted in melter according on preset program layer by layer deposition to print platform；First power unit, is mounted with glass fibre, and the first power unit is supplied to glass fibre in melter and printing silk mixed melting；Second power unit, is mounted with plastics softening agent, and the second power unit is supplied to plastics softening agent in melter and printing silk mixed melting.

Description

Three-dimensional printer and its forming method with surface post-processing function

Technical field

The present invention relates to a kind of three-dimensional printer, and in particular to a kind of three-dimensional printer with surface post-processing function 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.

Three-dimensional printer is usually that, from multiple printheads, each printhead loads a kind of face when color body is printed The silk of color, by the continuous conversion of color, finally printing forms 3 D color object.However, existing this color three dimension The hardness of the three-dimensional body that printer is formed is more single, and the hardness of three-dimensional body diverse location cannot change substantially, but user Then it is often desirable to obtain diverse location there is the three-dimensional body of different hardness, this realization just to three-dimensional printer higher function is carried Go out challenge.At present, there is no effective solution can utilize single printing silk to complete the three-dimensional article of different hardness The shaping of body.

The content of the invention

The main object of the present invention is to provide a kind of 3 D color object of printing has different hardness in diverse location, and Three-dimensional printer with surface post-processing function.

In order to complete above-mentioned purpose, the invention provides a kind of high accuracy color three-dimensional printer, it includes printhead cluster Part, print platform, print head assembly can be independently moved relative to print platform along three-dimensional；Controller respectively with printhead Component and print platform are electrically connected；Print head assembly has multiple printheads, and a kind of color is mounted with each printhead Printing silk, printhead includes melter, printing silk after being melted in melter according to preset program layer by layer deposition to printing On platform；First power unit, is mounted with glass fibre, and the first power unit is supplied to glass fibre in melter and printing Silk mixed melting；Second power unit, is mounted with plastics softening agent, and the second power unit is plastics softening agent supplied to melting Indoor and printing silk mixed melting.Stripping off device, the stripping off device removes the three-dimensional body on the print platform, and And, stripping off device drives three-dimensional body to coding region；Spray code spraying apparatus, coding treatment, three-dimensional body on the three-dimensional body The coding of upper formation contains the identifying data of three-dimensional body.

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.

The forming method of high accuracy color three-dimensional printer, three-dimensional printer includes print head assembly and print platform, beats Print head assembly can be independently moved relative to print platform along three-dimensional；Controller respectively with print head assembly and print platform Electrical connection；Print head assembly has multiple printheads, and a kind of printing silk of color, printhead are mounted with each printhead Including melter, printing silk is after melting in melter according on preset program layer by layer deposition to print platform；First power Unit, is mounted with glass fibre, and the first power unit is supplied to glass fibre in melter and printed material mixed melting；The Two power units, are mounted with plastics softening agent, and the second power unit is supplied to plastics softening agent in melter and printed material Mixed melting；Three-dimensional body includes Part I, Part II and Part III, wherein, hardness and the printing silk of Part I The hardness of material is identical, and the hardness of the hardness more than printing silk of Part II, the hardness of Part III is hard less than printing silk Degree；First power unit is supplied to glass fibre in melter and forms Part II, second with after printing silk mixed melting Power unit is supplied to plastics softening agent in melter and forms Part III with after printing silk mixed melting；

The forming method includes following step：First, preliminary step is performed, keeps three-dimensional printer in running order；So Afterwards, silk color selecting step is performed, a kind of silk printing of color is selected；Then, perform and judge step, controller sends to be sentenced Break signal, interpretation performs the order of printing Part I or Part II or Part III；When the life for performing printing Part I When making, selected printing silk is deposited on after being melted in melter and Part I is formed on print platform；When performing printing the During the order of two parts, the first feeding unit is supplied to glass fibre in melter according to given pace and mixes with printing silk It is deposited on after melting and Part II is formed on print platform；When the order of printing Part III is performed, the second feeding unit is pressed Plastics softening agent is added in melter according to given pace and is deposited on print platform after printing silk melting mixing and is formed the Three parts；Then, 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.Then, perform and peel off and moving step, stripping off device is on the print platform Three-dimensional body is removed, also, stripping off device drives three-dimensional body to coding region；Coding process step is performed, in the three-dimensional Coding treatment on object, the coding formed on three-dimensional body contains the identifying data of three-dimensional body.

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 the three-dimensional printer embodiment with surface post-processing function of the invention.

Fig. 2 is the printhead of the three-dimensional printer embodiment with surface post-processing function of the invention, the first supply list Unit, the structural representation of the second feeding unit.

Fig. 3 is the structural representation of the printhead of the three-dimensional printer embodiment with surface post-processing function of the invention Figure.

Fig. 4 is preparation printing in the memory module of the three-dimensional printer embodiment with surface post-processing function of the invention Theory three-dimensional object structural representation.

Fig. 5 is preparation printing in the memory module of the three-dimensional printer embodiment with surface post-processing function of the invention Theory three-dimensional object center section structural representation.

Fig. 6 is a kind of schematic cross-section of existing three-dimensional body.

Fig. 7 is existing a kind of printed by three-dimensional printer and the three-dimensional body with supporting part.

Fig. 8 is the schematic diagram of three-dimensional printer embodiment of the invention.

Fig. 9 is that there is print state during main part to illustrate on the print platform of three-dimensional printer embodiment of the invention Figure.

Print state schematic diagram when Figure 10 is three-dimensional printer embodiment preparation printing backing material of the invention.

Figure 11 is the print state schematic diagram of three-dimensional printer embodiment printing supporting part of the invention and suspending part.

Figure 12 is the schematic diagram of another embodiment of three-dimensional printer of the invention.

Figure 13 is the schematic diagram of another embodiment of three-dimensional printer of the invention.

Figure 14 is the schematic diagram of another embodiment of three-dimensional printer of the invention.

Figure 15 is the structural representation of the embodiment of three-dimensional printer of the invention 8th.

Figure 16 is the connection diagram between the members of the embodiment of three-dimensional printer of the invention 8th.

Specific embodiment

First embodiment

As shown in figure 1, the high accuracy color three-dimensional printer of the present embodiment includes print head assembly, print platform 10 and controller 20.The print head assembly that print head assembly has multiple printheads, the present embodiment includes the first printhead 31, the second printhead 32 With the 3rd printhead 33.Print head assembly can be independently moved relative to print platform 10 along three-dimensional.Controller 20 is distinguished Electrically connected with the first printhead 31, the second printhead 32, the 3rd printhead 33 and the controlling of print platform 10.For example in one kind side In formula, the rotation of the controlled motor of controller 20, motor by drive disk assembly realize to the first printhead 31, the second printhead 32, The mobile control of the 3rd printhead 33, print platform 10.

A kind of printing silk of color is mounted with each printhead, specifically, white is loaded in the first printhead 31 Printing silk, loads red printing silk in the second printhead 32, blue line print silk is loaded in the 3rd printhead 33.Printing silk Expect to be PLA（PLA）Three-dimensionally shaped silk or ABS（Acrylonitrile-butadiene-styrene terpolymer）Three-dimensionally shaped silk Or PP（Polypropylene）Three-dimensionally shaped silk or PVC（Polyvinyl chloride）Three-dimensionally shaped silk or（PE）The three-dimensionally shaped silk of polyethylene. Printing silk is specifically also an option that other colors, such as yellow, green, grey.

As shown in Fig. 2 printhead includes melter 34, printing silk 35 is sprayed after melting in melter 34 from nozzle 39 Go out, and according on preset program layer by layer deposition to print platform 10.Printing silk 35 can lean on two delivery wheel movement printing silks In material 35 to melter 34, two delivery wheels include a driving wheel 36 and a driven pulley 37, and driving wheel 36 can be by motor It is rotated.The distal end for printing silk 35 is wrapped on silk disk, and silk disk is suspended in the frame of three-dimensional printer.

As shown in figure 3, the first power unit includes the first cavity 41, the first spiral powder feeding rod 42 and the first motor 43, the First spiral powder feeding rod 42 is set in one cavity 41, the first spiral powder feeding rod 42 is driven with the first motor 43, in the first motor 43 Work under drive the first spiral powder feeding rod 42 that glass fibre 44 is brought into melter 34, the first motor 43 and controller 20 It is electrically connected with.Controller 20 controls the rotating speed of the first spiral powder feeding roller 42 by controlling the rotating speed of the first motor 43, finally Realize supplying the first power unit the control of powder speed.In other embodiments, set at the first outlet 45 of the first cavity 41 One the first electromagnetic valve, the size of the first electromagnetic valve can be regulated and controled according to uninterrupted, and the first electromagnetic valve also may be used To realize the regulation for powder speed.First power unit is mounted with glass fibre 44, and the first power unit supplies glass fibre 44 Should in melter 34 with the printing mixed melting in melter 34 of silk 35.

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 34, the second motor is electrically connected with controller 20.The rotating speed that controller 20 passes through the second motor of control, and then The rotating speed of the second spiral powder feeding roller is controlled, the final control for realizing supplying the second power unit powder speed, in other embodiments, One the second electromagnetic valve is set at the second outlet of the second cavity, and the size of the second electromagnetic valve can be entered according to uninterrupted Row regulation and control, the second electromagnetic valve can also realize the regulation for powder speed.Second power unit is mounted with plastics softening agent, second Power unit is interior supplied to melter 34 plastics softening agent and prints the mixed melting of silk 35.Plastics softening agent can specifically be selected Select：PVC（Polyvinyl chloride）Softening agent, PE（Polyethylene）Softening agent or PP（Polypropylene）Softening agent or other correspondence printed materials Softening agent.

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 4, the data information memory of the three-dimensional body in a storage module, under the three-dimensional body 50 has Side part 51, center section 52 and upper portion 53, wherein lower portion 51 are red, upper lateral part for white, center section 52 53 are divided to be grey.As shown in figure 5, center section 52 specifically includes Part I 54, Part II 55 and Part III 56, wherein The hardness of Part I 54 is identical with the hardness of printing silk 35, the hardness of the hardness more than printing silk 35 of Part II 55, Hardness of the hardness of Part III 56 less than printing silk 35.

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

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 51 of object, therefore it is white to select the first to print the color of silk first.Controller 20 is controlled First printhead 31 works, and the first printhead 31 drives the printing silk of white to be deposited on print platform 10 under formation after melting Side part 51.

Then, after the printing of lower portion 51 is finished, the print procedure of center section 52 is proceeded by, controller 20 is controlled Red silk is deposited on formation center section 52 on print platform 10 by the second printhead 32 after melting in melter 34.

Execution judges step, and controller 20 sends judgement signal, judges to perform printing Part I 54 or Part II 55 Or the order of Part III 56.When the order of printing Part I 54 is performed, selected printing silk melts in melter 34 Formation Part I 54 on print platform 10 is deposited on after melting.When the order of printing Part II 55 is performed, the first supply is single Unit is supplied to glass fibre 44 in the melter of the second printhead 32 according to given pace sinks with after printing silk mixed melting Product forms Part II 55 on print platform 10.When perform printing Part III 56 order when, the second feeding unit according to Given pace plastics softening agent be added in the melter of the second printhead 32 with printing silk melting mixing after be deposited on beat Print platform 10 forms Part III 56.Specifically, because Part I 54 is in lower end, therefore controller 20 controls printing the first A part 54, then Part II 55 is printed, finally print Part III 56.When Part I 54 are printed, due to first The hardness that part 54 needs is identical with the hardness of printing silk, therefore it may only be necessary to be deposited after directly red printing silk is melted On print platform 10.After the completion of Part I 54 is printed, the printing of Part II 55 is proceeded by, Part II 55 More than the hardness of printing silk, controller 20 sends signal to hardness, starts the work of the first feeding unit, the first feeding unit according to The speed of first flow is interior supplied to melter 34 glass fibre and prints silk mixed melting.Printing silk after mixed melting The hardness of material is greater than hardness of printing silk itself, the printed material layer by layer deposition after mixed melting on print platform 10, Form Part II 55.After the completion of Part II 55 is printed, the printing of Part III 56, the hardness of Part III 56 are proceeded by Less than the hardness of printing silk, controller 20 sends signal, starts the work of the second feeding unit, and the second feeding unit is according to second Flow rate is interior supplied to melter 34 plastics softening agent and prints silk mixed melting.Printing silk after mixed melting Hardness is less than hardness of printing silk itself, and the printing silk layer by layer deposition after mixed melting forms the on print platform Three parts 56.

Then, 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.

Then, perform and peel off and moving step, stripping off device removes the three-dimensional body on print platform, also, peel off Device drives three-dimensional body to coding region.

Finally, coding process step is performed, on three-dimensional objects coding treatment, the coding formed on three-dimensional body is contained The identifying data of three-dimensional body.Coding is, for example, a Quick Response Code, or upper some important identity letters of stamping on three-dimensional objects Breath, or implantation can sense the chip of identification.Identity information for example includes date printed, time-write interval, weight of object.

Second embodiment

The three-dimensional printer of the present embodiment is essentially identical with first 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.

3rd embodiment

In the first embodiment, the first printhead 31 is used to print lower portion 51, and the second printhead 32 is used to print pars intermedia Divide 52, the 3rd printhead 33 is used to print upper portion 53.Second printhead of the present embodiment includes the first child print head, 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 and load red Color print silk, the second printhead dedicated for print three-dimensional body red center section, the red pars intermedia of the present embodiment Dividing also includes Part I, Part II and Part III.First child print head dedicated for printing Part I, in printing the When a part, then combined fiberglass and printing silk form the printed material that hardness is strengthened to the second child print head, finally It is deposited on and Part II is formed on print platform；Meanwhile, then mixed plastic softening agent and printing silk are formed the 3rd child print head The printed material of hardness reduction.This printing type can be obviously improved the shaping efficiency of three-dimensional body.

Fourth 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. 6, 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. 7 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.

The present embodiment has made further improvement on the basis of the three-dimensional printer of first embodiment.As shown in figure 8, It is the three-dimensional printer with backing material printhead that the present embodiment is provided, the three-dimensional printer includes print head assembly and beats 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 7, 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 figure 9, 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 Figure 10, 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 122 of the top of print platform 120, and supporting plate 150 is moved to first rate first to be leaned on The position of the vertical portion of nearly main part 110, the sensor sensing of flexible edge part is less than to its distance apart from main part 110 After setpoint distance, controller 130 controls supporting plate 150 with the second speed slowly near main part 110, until flexible edge part touches After encountering supporting part 110, supporting plate 150 then stops the movement in horizontal direction.Because flexible edge part has elasticity, therefore can To play good cushioning effect, flexible edge part preferably uses energy absorbing material or space wadding, and space wadding can be with maximum Limit 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 11, perform supporting part 112 printing step, the second printhead 142 in supporting plate 150 by Layer 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.It is that existing supporting part 112 needs the normal level of printing One height 121.Finally, the printing step of suspending part 111 is performed, successively printing is formed the first printhead 141 on supporting part 112 Suspending part 111.Suspending part 111 prints the printing that whole three-dimensional body can be just completed after finishing.

5th embodiment：

The present embodiment is essentially identical with above-mentioned fourth 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 150, binding agent can be to the bottom of supporting part 112 The effect of being adhered fixed is played in face, 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.

Sixth embodiment

As shown in figure 12, the present embodiment provides a kind of three-dimensional printer that function is molded with backing material, and it includes printhead Component 230, print platform 213, the power unit 240 of controller 220 and first.

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 13, 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 238, the melting printed material layer by layer deposition of expansion Supporting part 112 is formed on print platform 213, the density of supporting part 112 is less than the density of undressed printing silk 238, The weight of the backing material for using accordingly is reduced, so as to realize the purpose of reduces cost.Especially in large-sized object, such as people Body Model, the shaping of building model, the cost savings highly significant of backing material.The print head assembly of the present embodiment 230 There is a printhead, the printhead can work as type body as the printing of main part 110, supporting part 112 and suspending part 111 When portion 110, the first power unit 240 is idle, that is, foaming agent do not enter in melter 233.When printing branch When support part 112, the first power unit 240 is added to foaming agent in melter 233, and foaming agent is mixed with printing silk 238 Backing material is formed after closing melting, backing material layer by layer deposition forms supporting part 112 on print platform 213.Main part 110, Supporting part 112 and suspending part 111 refer to Fig. 6 and Fig. 7.

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.

7th embodiment

The three-dimensional printer with backing material shaping function of the present embodiment is identical with sixth embodiment, below only with regard to difference Make description in place.As shown in figure 14, print head assembly includes the first printhead 231 and the second printhead 232.First printhead Type body material is mounted with 231, the first printhead 231 can be independently moved with respect to print platform 213 along three-dimensional.The Two printheads 232 include melter 233, and melter 133 has first through hole and the second through hole, and printing backing material is logical along first Hole（The side of melter or top surface）Into in melting 233, the first power unit is delivered to foaming agent along the second through hole molten Melt room 233.

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 upper one embodiment, two technical schemes of printhead of the present embodiment can be notable Operating efficiency is improved, in upper one embodiment, a printhead is after the printing step for completing main part 110, it is necessary to molten Melt the printing step that can just continue supporting part 112 in room 233 after mixing addition foaming agent, it is clear that the operating efficiency of this mode It is slower.Comparatively speaking, after first printhead 231 of the present embodiment completes the print job of main part 110, the second printhead 232 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 133.

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.

8th embodiment

The present embodiment has made further improvement on the basis of above-described embodiment.The three-dimensional printer of the present embodiment includes Print head assembly and print platform, print head assembly can be independently moved relative to print platform along three-dimensional.Controller point Do not electrically connected with print head assembly and print platform.

As shown in Figure 15 and Figure 16, print head assembly includes the first powder feeding part 310, the second powder feeding part 320 and the 3rd powder feeding Part 330.

First powder feeding part 310 has the first hollow cylinder 311, and the first spiral powder feeding rod is set in the first hollow cylinder 311 312, the upstream end of the first hollow cylinder 310 is provided with the first powder input port 313, and the downstream of the first hollow cylinder 311 sets the One outlet 314.Word " upstream " refers to the front end of powder printed material direct of travel in the first hollow cylinder 311, word " under Trip " refers to the rear end of powder printed material direct of travel in the first hollow cylinder 311.Red powder printed material is loaded in In one hollow cylinder 311, the position of first outlet 314 is provided with first flow sensor and the first valve, first flow sensing Device be used for the position of real-time monitoring first outlet 314 red powder printed material flow, and in real time monitoring signals transmit to Controller 340.First flow sensor can use existing poweder flowmeter or powder flow gauge.Red powder printed material Entered in the first hollow cylinder 310 along the first powder input port 313, the first spiral powder feeding rod 312 drives red powder printed material To the rotating speed that the position of the first outlet 314 of the first hollow cylinder 311, controller 340 pass through the first spiral powder feeding rod 312 of regulation Or first valve openings of sizes and the flow that red powder printed material enters into mixed melting room 350 is adjusted. First valve is preferably the powder formula electromagnetic valve of control flow of powder.

The structure of the second powder feeding part 320 is essentially identical with the structure of the first powder feeding part.Second powder feeding part 320 has in second Second spiral powder feeding rod is set in empty cylinder, the second hollow cylinder, and the upstream end of the second hollow cylinder is provided with the second powder input port, The downstream of the second hollow cylinder sets second outlet.Green powder printed material in the second hollow cylinder, second outlet Position is provided with second flow sensor, and the green powder that second flow sensor is used for real-time monitoring second outlet position is printed The flow of material, and monitoring signals are transmitted to controller in real time.Second flow sensor using existing poweder flowmeter or Powder flow gauge.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 powder printed material to the second hollow cylinder second outlet, controller by adjust the second spiral powder feeding rod rotating speed with And second the openings of sizes of valve the flow that green powder printed material enters into mixed melting room 350 is adjusted.

The structure of the 3rd powder feeding part 330 is also essentially identical with the structure of the first powder feeding part.3rd powder feeding part 330 has the 3rd 3rd spiral powder feeding rod is set in hollow cylinder, the 3rd hollow cylinder, and the upstream end of the 3rd hollow cylinder is provided with the 3rd plus powder Mouthful, the downstream of the 3rd hollow cylinder sets the 3rd and exports.In the 3rd hollow cylinder, the 3rd exports blue powder printed material Position be provided with the 3rd flow sensor, the blue powder that the 3rd flow sensor is used for the outlet port of real-time monitoring the 3rd is beaten The flow of material is printed, and monitoring signals are transmitted to controller in real time.3rd flow sensor uses existing poweder flowmeter Or powder flow gauge.Blue powder printed material enters to the 3rd hollow cylinder, the 3rd spiral powder feeding rod band along the 3rd powder input port Move the 3rd outlet of blue powder printed material to the 3rd hollow cylinder, the rotating speed that controller passes through the 3rd spiral powder feeding rod of regulation And the 3rd the openings of sizes of valve the flow that blue powder printed material enters into mixed melting room 350 is adjusted.

Mixed melting room 350 has the first import 351, the second import 352, triple feed inlet 353 and printing nozzle 354, the One outlet 314 is connected with the first import 351, and second outlet is connected with the second import 352, and the 3rd outlet and triple feed inlet 353 connect It is logical.Be provided with agitating element 341 and heating element heater 342 in mixed melting room 350, agitating element 341 and heating element heater 342 with Controller 340 is electrically connected with.Weight sensor 343 is provided with print platform 360, weight sensor 343 can be with real-time monitoring Weight data on print platform 360, and data-signal real-time Transmission to controller 340.Controller 340 is also respectively with One flow sensor 344, the flow sensor 346 of second flow sensor 345 and the 3rd are electrically connected with.Thus, controller 340 can To obtain the quality of the red powder printed material that the first powder feeding part 310 is added in mixed melting room 350 in real time, can also be real When obtain the quality of the green powder printed material that the second powder feeding part 320 is added in mixed melting room 350, can also obtain in real time Obtain the quality of the blue powder printed material that the 3rd powder feeding part 330 is added in mixed melting room 350.

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 360 Put and calibrated, controller 340 obtains each layer data information of three-dimensional body, each layer data information includes color data information, Three-dimensional printer preparation prints the melted material of the first color.Controller 340 includes a processor, and processor is by analysis And calculating, the weight proportion for determining the melted material of the first color is:The mass parts of red powder printed material 10 are added, is added The mass parts of green 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 310 adds the first mass parts to mixed melting room 350（10 mass Part）Red powder printed material, the real-time monitoring red powder printed material of first flow sensor 344 is added to mixed melting Weight in room 350, and information transfer to controller 340.When amount to 10 mass parts in mixed melting room 350 are added, First powder feeding part 310 stops to adding red powder printed material in mixed melting room 350.Second powder feeding part 320 is to mixing Melter 350 adds the second mass parts（10 mass parts）Green powder printed material, the real-time monitoring of second flow sensor 345 Green powder printed material is added to the weight in mixed melting room 350, and information transfer to controller 340, it is mixed when adding When closing amount to 10 mass parts in melter 350, the control of controller 340 stops the second powder feeding part 320 in mixed melting room 350 Add green powder printed material.3rd powder feeding part 330 adds the 3rd mass parts to mixed melting room 350（10 mass parts）'s Blue powder printed material, the real-time monitoring blue powder printed material of the 3rd flow sensor 346 is added to mixed melting room 350 Interior weight, and information transfer to controller 340, when addition to 10 mass parts, the control of controller 340 stops to mixing Blue powder printed material is added in melter 350.Passed by controller 340, first flow sensor 344, second flow The coordinated of the flow sensor 346 of sensor 345 and the 3rd, realizes red powder printed material, green powder printed material The precise control in mixed melting room 350 is added to blue powder printed material, it is possible thereby to realize high-precision three-dimensional object Shaping.In a kind of alternative embodiment, it is also possible to omit first flow sensor 344, second flow sensor 345 and Three flow sensors 346, but by the rotating speed of the controlled motor of controller 340, motor drives the first spiral powder feeding rod 312, the The rotation of two spiral powder feeding rods or the 3rd spiral powder feeding rod and the dusty material of firm discharge is delivered to mixed melting room 350 It is interior, while, it is necessary to recording the time, the relation according to time and flow obtains adding the powder in mixed melting room 350 to print material The weight of material.Although the accuracy of this alternative can also obtain the mixed of different colours not as the mode of sensor Close melted material.

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 360 Figure, weight sensor 343 obtains weight data information, monitors to increased the three-dimensional article of 15 mass parts on print platform 360 Body, the data message real-time Transmission to controller 340, controller 340 is by learning the melting in mixed melting room 350 after computing The gross weight residue of material should be 15 mass parts, wherein, red printed material, green printed material and blue line print material are total Quality in weight is respectively 5 mass parts.

Then, if the preparation of controller 340 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 , to the red powder printed material that 3 mass parts are added in mixed melting room 350, the second powder feeding part 320 of control is to mixing for powder part 310 The green powder printed material of 2 mass parts, the 3rd powder feeding part 330 of control is added to add in mixed melting room 350 in melter 350 Enter the blue powder printed material of 1 mass parts.Finally, second melting material of color is obtained after mixing and melting step Material.

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

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 350 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 350 The color of mixed melting printed material be monitored and measure, when missing occurs in its color detected in mixed melting room 350 After difference, detection signal is transmitted to controller 340 by Tansducer For Color Distiguishing, the feedback control of controller 340 regulation first is sent Powder part, the second powder feeding part and the 3rd powder feeding part are added to the amount of the dusty material in mixed melting room 350, are achieved in three kinds of face Proportion adjustment of the toner powder material in mixed melting room 350, finally realizes the regulation to mixed melting indoor color, so that To a kind of color accuracy three-dimensional body higher.Tansducer For Color Distiguishing is preferably disposed on the nozzle location of mixed melting room. Upper lateral part in mixed melting room 350 sets an air blower, and the controlling switch of air blower is electrically connected with controller 340, air blast Machine can preferably provide the air-flow of continuation rotation, and the air-flow of rotation drives red powder printed material, green powder printing material Material and the premixing of blue powder printed material.Negative pressure device can also be set in mixed melting room 350, negative pressure device is carried to interior For negative-pressure air-flow, negative-pressure air-flow especially needs to provide in the position of the first import 351, the second import 352 and triple feed inlet 353, The setting of negative-pressure air-flow contributes to different dusty materials fast along the first import 351, the second import 352 and triple feed inlet 353 Speed, fully enter into mixed melting room 350.In order that the mixed melting material that obtains of mixed melting room 350 is easier Sprayed from printing nozzle 354, a screw rod can be set in mixed melting room 350, can added after electric motor driven screw rotation Fast mixed melting material is sprayed by printing nozzle 354.The aperture position of printing nozzle 354 is provided with electromagnetic valve, electromagnetic valve It is electrically connected with controller 340, when the dusty material of the shades of colour in mixed melting room 350 is in mixed melting, electricity Magnet valve door is in closure state, until the color that Tansducer For Color Distiguishing detects the melted material in mixed melting room 350 reaches To theory demands color when, the electromagnetic valve of the position of 340 open printing nozzle of controller 354.

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.

According to the principle that color is matched, the face that can be specifically needed after being adjusted to the part by weight of three-primary colours Color.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 be needed The printed material of the different colours after the mixed melting wanted.

Claims (7)

1. there is the three-dimensional printer of surface post-processing function, 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 has multiple printheads, and a kind of printing silk of color is mounted with each described printhead, The printhead includes that melter, printing silk beat according to preset program layer by layer deposition after being melted in the melter described in On print platform；

First power unit, is mounted with glass fibre, and the glass fibre is supplied to the melting by first power unit It is indoor to print silk mixed melting with described；

Second power unit, is mounted with plastics softening agent, and second power unit is the plastics softening agent described in With the printing silk mixed melting in melter；

Stripping off device, the stripping off device removes the three-dimensional body on the print platform, also, stripping off device drives three-dimensional Object is to coding region；

Spray code spraying apparatus, the coding treatment on the three-dimensional body, the coding formed on three-dimensional body contains the body of three-dimensional body Part data.

2. the three-dimensional printer with surface post-processing function according to claim 1, it is characterised in that

The printing silk is the three-dimensionally shaped silks of PLA or the three-dimensionally shaped silks of ABS or the three-dimensionally shaped silks of PP；

First power unit includes being set in the first cavity, the first spiral powder feeding rod and the first motor, first cavity The first spiral powder feeding rod, the first spiral powder feeding rod is driven with first motor, in the work of first motor It is lower to drive the first spiral powder feeding rod that the glass fibre is brought into the melter, first motor and the control Device processed is electrically connected with；

Second power unit includes being set in the second cavity, the second spiral powder feeding rod and the second motor, second cavity The second spiral powder feeding rod, the second spiral powder feeding rod is driven with second motor, in the work of second motor It is lower to drive the second spiral powder feeding rod that the plastics softening agent is brought into the melter, second motor with it is described Controller is electrically connected with.

3. the three-dimensional printer with surface post-processing function according to claim 1, it is characterised in that

The three-dimensional printer includes case hardness sensor, and the case hardness sensor is used to detect in the print platform The three-dimensional body of upper formation；

The case hardness sensor is electrically connected with the controller, and the controller has a comparison module and storage mould Theoretical hardness in block, the hardness data that the comparison module detects the case hardness sensor and the memory module Data are compared.

4. the three-dimensional printer with surface post-processing function according to claim 3, it is characterised in that

The three-dimensional body include Part I, Part II and Part III, wherein, the hardness of the Part I with it is described The hardness for printing silk is identical, the hardness of the Part II more than the printing silk hardness, the Part III it is hard Hardness of the degree less than the printing silk；

First power unit the glass fibre supplied in the melter with it is described print silk mixed melting after It is deposited on and the Part II is formed on the print platform；

Second power unit is supplied to the plastics softening agent in the melter and the printing silk mixed melting After form the Part III.

5. there is the forming method of surface post-processing function, three-dimensional printer includes：

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 has multiple printheads, and a kind of printing silk of color is mounted with each described printhead, The printhead includes that melter, printing silk beat according to preset program layer by layer deposition after being melted in the melter described in On print platform；

First power unit, is mounted with glass fibre, and the glass fibre is supplied to the melting by first power unit It is indoor with the printed material mixed melting；

Second power unit, is mounted with plastics softening agent, and second power unit is the plastics softening agent described in With the printed material mixed melting in melter；

The three-dimensional body include Part I, Part II and Part III, wherein, the hardness of the Part I with it is described The hardness for printing silk is identical, the hardness of the Part II more than the printing silk hardness, the Part III it is hard Hardness of the degree less than the printing silk；

First power unit the glass fibre supplied in the melter with it is described print silk mixed melting after It is deposited on print platform and forms the Part II, second power unit melts the plastics softening agent supplied to described Melt it is indoor with the printing silk mixed melting after be deposited on print platform and form the Part III；

The forming method includes following step：

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

Then, printing silk color selecting step is performed, a kind of printing silk of color is selected；

Then, perform and judge step, controller sends judgement signal, judge to perform printing Part I or Part II or the 3rd Partial order；When the order of the printing Part I is performed, the selected printing silk melts in the melter It is deposited on after melting and Part I is formed on print platform；When the order of printing Part II is performed, first feeding unit Glass fibre is supplied in the melter according to given pace is deposited on described beating with after the printing silk mixed melting The Part II is formed on print platform；When the order of printing Part III is performed, second feeding unit is according to certain Speed is added to plastics softening agent in the melter and is deposited on the print platform with after the printing silk melting mixing Form the Part III；

Then, repeat above-mentioned silk color selecting step and judge step, until completing the shaping of whole three-dimensional body, shape Into high accuracy 3 D color object；

Then, perform and peel off and moving step, stripping off device removes the three-dimensional body on the print platform, also, peel off Device drives three-dimensional body to coding region；

Finally, coding process step is performed, the coding treatment on the three-dimensional body, the coding formed on three-dimensional body is contained The identifying data of three-dimensional body.

6. the forming method of the three-dimensional printer with surface post-processing function according to claim 5, it is characterised in that

The three-dimensional printer includes case hardness sensor, and the case hardness sensor is used to detect in the print platform The hardness of the three-dimensional body of upper formation；

The case hardness sensor is electrically connected with the controller, and the controller has comparison module and memory module, institute State the theoretical hardness data in hardness data that comparison module detects the case hardness sensor and the memory module It is compared；

After first forming step of three-dimensional body is completed, the case hardness sensor obtains first three-dimensional body Part I, Part II and Part III hardness data, comparison module is the reason in the hardness data and memory module Command signal is compared to each other and sent by hardness data, if the theoretical hardness number in the hardness data for detecting and memory module According to there is deviation, and deviation more than certain threshold value, then accordingly the first feeding unit of regulation adds the glass to the melter The speed of fiber, or the second feeding unit of regulation adds the speed of the plastics softening agent to the melter.

7. the forming method of the three-dimensional printer with surface post-processing function according to claim 5, it is characterised in that

The printing silk is the three-dimensionally shaped silks of PLA or the three-dimensionally shaped silks of ABS or the three-dimensionally shaped silks of PP；

First power unit includes being set in the first cavity, the first spiral powder feeding rod and the first motor, first cavity The first spiral powder feeding rod, the first spiral powder feeding rod is driven with first motor, in the work of first motor It is lower to drive the first spiral powder feeding rod that the glass fibre is brought into the melter, first motor and the control Device processed is electrically connected with；

Second power unit includes being set in the second cavity, the second spiral powder feeding rod and the second motor, second cavity The second spiral powder feeding rod, the second spiral powder feeding rod is driven with second motor, in the work of second motor It is lower to drive the second spiral powder feeding rod that the plastics softening agent is brought into the melter, second motor with it is described Controller is electrically connected with.