CN106827504A - Three-dimensional printer with backing material printhead - Google Patents
Three-dimensional printer with backing material printhead Download PDFInfo
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- CN106827504A CN106827504A CN201710088123.9A CN201710088123A CN106827504A CN 106827504 A CN106827504 A CN 106827504A CN 201710088123 A CN201710088123 A CN 201710088123A CN 106827504 A CN106827504 A CN 106827504A
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- Prior art keywords
- printhead
- dimensional
- supporting plate
- printing
- print platform
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Abstract
The present invention relates to a kind of three-dimensional printer with backing material printhead, three-dimensional printer includes print head assembly and 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 includes the first printhead and the second printhead, and the first print head cartridge is loaded with type body material, and the first printhead can be independently moved with respect to print platform along three-dimensional；Second print head cartridge is loaded with printing backing material, and the second printhead can be independently moved with respect to print platform along three-dimensional；Supporting plate component has the travel mechanism and supporting plate for linking together, and travel mechanism drives supporting plate to be moved on three-dimensional relative to print platform.Before supporting part is printed, supporting plate is first moved to the second height above print platform, backing material deposition is formed supporting part, can so shorten the height of printing required for supporting part by the second printhead on the supporting plate.
Description
Technical field
The present invention relates to a kind of shaped device and forming method, and in particular to a kind of three-dimensional with backing material printhead
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 there are problems that a lot when hanging object is printed, or even hanging thing cannot be printed
Body.For example, as shown in figure 1, being a kind of existing three-dimensional body with suspending part, the three-dimensional body includes main part 10 and hangs
Empty portion 11, suspending part 11 is supported due to bottom surface without other, is limited to gravity factor, thus in 3 D-printing just cannot or
The shaping of suspending part 11 difficult to realize.When needing to print this three-dimensional body with suspending part 11 with three-dimensional printer, such as
Shown in Fig. 2, three-dimensional printer typically prints main part 10 first, then, prints supporting part 12, so can just continue
Suspending part 11 is printed on supporting part 12.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 content of the invention
The main object of the present invention is to provide a kind of solution and can improve operating efficiency and save when backing material is printed
The three-dimensional printer of backing material.
It is three-dimensional the invention provides a kind of three-dimensional printer with backing material printhead in order to complete above-mentioned purpose
Printer includes print head assembly and print platform, and print head assembly can independently be moved relative to print platform along three-dimensional
It is dynamic；Controller is electrically connected with print head assembly and print platform respectively；Print head assembly includes the first printhead and the second printing
Head, the first print head cartridge is loaded with type body material, and the first printhead can be independently moved with respect to print platform along three-dimensional；
Second print head cartridge is loaded with printing backing material, and the second printhead can be independently moved with respect to print platform along three-dimensional；Branch
Bracing plate assembly has the travel mechanism and supporting plate for linking together, and travel mechanism drives supporting plate relative to print platform three
Dimension side moves up.
From such scheme, before supporting part is printed, first supporting plate is moved to second high above print platform
Backing material deposition is formed supporting part by degree, the second printhead on the supporting plate, can so shorten printing required for supporting part
Height.The height that suspending part is defined to print platform is the first height, and conventional three-dimensional printer then needs to print first high
Suspending part can be just printed after the supporting part of degree.Comparatively speaking, it is then first high that supporting part of the invention needs the height of printing
The difference of degree and the second height, that is to say, that present invention saves the printing of the supporting part of the second height.Therefore, it is of the invention
Supporting part needs the height of printing to reduce, so not only material-saving, and can improve printing effect.
One preferred scheme is that print head assembly includes the 3rd printhead, and binding agent is mounted with the 3rd printhead.
One preferred scheme is that the edge part of supporting plate is flexible edge part, and flexible edge part is provided with Distance-sensing
Device, range sensor is electrically connected with controller.
The forming method of the three-dimensional printer with backing material printhead that the present invention is provided, three-dimensional printer includes beating
Print head assembly and print platform；Print head assembly can be independently moved relative to print platform along three-dimensional；Controller is distinguished
Electrically connected with print head assembly and print platform；
Print head assembly includes the first printhead and the second printhead：First print head cartridge is loaded with type body material, first dozen
Print head can be independently moved with respect to print platform along three-dimensional；Second print head cartridge is loaded with printing backing material, the second printing
Head can be independently moved with respect to print platform along three-dimensional；Supporting plate component has the travel mechanism and support for linking together
Plate, travel mechanism drives supporting plate to be moved on three-dimensional relative to print platform, and controller is electrically connected with travel mechanism；
The forming method includes following step：First, preparation process is performed, starts the switch of three-dimensional printer, to printhead
The position of component and print platform is calibrated, and controller obtains each layer data information of three-dimensional body, and three-dimensional body has master
Body portion, suspending part and supporting part, suspending part are connected with supporting part and main part respectively；Then, executive agent portion printing step, the
First height of the one first type body material layer by layer deposition of printing on print platform up to print platform；Then, shifting is performed
Dynamic supporting plate step, controller sends instruction preparation printing suspending part, and travel mechanism is driven above supporting plate to print platform
Second height, a part for the edge part of supporting plate is mobile and touches to main part, and the second height is in the lower section of the first height；Connect
, perform supporting part printing step, successively printing forms supporting part to the second printhead on the supporting plate；Finally, suspending part is performed
Printing step, successively printing forms suspending part to the first printhead on supporting part.
One preferred scheme is that the density of supporting part is less than the density of main part, density and the suspending part phase of main part
Together；Print head assembly includes the 3rd printhead, and binding agent is mounted with the 3rd printhead, perform supporting part printing step it
Before, the 3rd printhead smears a layer binder on the supporting plate, and the ground floor of supporting part is covered on binding agent on the supporting plate.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of schematic cross-section of existing three-dimensional body.
Fig. 2 is existing a kind of printed by three-dimensional printer and the three-dimensional body with supporting part.
Fig. 3 is the schematic diagram of the three-dimensional printer embodiment with backing material printhead of the invention.
Fig. 4 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. 5 be it is of the invention with backing material printhead the preparation of three-dimensional printer embodiment printing backing material when printing
View；
Fig. 6 is the printing of three-dimensional printer embodiment printing supporting part and suspending part with backing material printhead of the invention
View.
Fig. 7 is the schematic diagram of another embodiment of three-dimensional printer of the invention.
Fig. 8 is the schematic diagram of another embodiment of three-dimensional printer of the invention.
Fig. 9 is the schematic diagram of another embodiment of three-dimensional printer of the invention.
Figure 10 is the structural representation of the embodiment of three-dimensional printer of the invention 5th.
Figure 11 is printhead, the first feeding unit, second feeding unit of the embodiment of three-dimensional printer of the invention 5th
Structural representation.
Figure 12 is the structural representation of the printhead of the embodiment of three-dimensional printer of the invention 5th.
Figure 13 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 14 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.
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 3, the three-dimensional printer with backing material printhead provided for the present embodiment, the three-dimensional printer includes
Print head assembly and print platform 20.
Print head assembly can be independently moved relative to print platform 20 along three-dimensional.Controller 30 respectively with printhead
Component and print platform 20 are directly or indirectly electrically connected, controller can be a single-chip microcomputer or chip processor or computer or
PLC（Programmable logic controller (PLC)）Program.Print head assembly includes the first printhead 41, the second printhead 42 and the 3rd printhead
43.First printhead 41 is mounted with type body material, and the first printhead 41 can be with respect to print platform 20 along three-dimensional independence
Ground is mobile.Second printhead 42 is mounted with printing backing material, and the second printhead 42 can be with respect to print platform 20 along three-dimensional
Independently move.
First printhead 41 and the second printhead 42 can take the mode of wire silk fusion sediment to be printed, thread
The transmission of material, the process of melting extrusion shaping use the printhead of existing three-dimensional printer.For example, the He of the first printhead 41
Second printhead 42 can be beaten using U.S. MakerBot companies with the silks such as PLA, ABS transmission, melting, printing function
Print head.Type body material and printing backing material can select the existing filamentary material for 3 D-printing, such as PLA
（PLA）, ABS (acrylonitrile-butadiene-styrene copolymer), PVC（Polyvinyl chloride）, PC（Makrolon）.
Binding agent is mounted with 3rd printhead 43, the 3rd printhead 43 can be a spray gun, and spray gun sprays binding agent
It is coated in supporting plate 50.3rd printhead 43 can also be an application device, and application device can be in the control of controller 30
Under smear certain thickness binding agent in supporting plate 50, the effect of binding agent is that the bottom surface adhesion of supporting part is firmly existed
In supporting plate 50, can so avoid the position of supporting part from moving, the inclined of printing objects can be then caused in the event of position movement
Difference.Binding agent can for example select following material：Cyanoacrylates, thixotropy (pseudoplastic behavior) cyanoacrylate glue
Knot agent, the thixotropy a- cyanoacrylates of stable storing, the agent of fast solidification cyanoacrylate ester knot, alpha-cyanoacrylate
It is the priming paint of ester binding agent, anaerobic curable adhesive, the anaerobic adhesive of high intensity stable storing, industrial glue, medical
Glue etc..
Supporting plate component has the travel mechanism and supporting plate 50 for linking together, and travel mechanism drives supporting plate 50 relative
Moved on three-dimensional in print platform 20.The edge part of supporting plate 50 is flexible edge part, and flexible edge part is, for example, silicon
Glue, when supporting plate 50 moves close to main part 10, flexible edge part can play certain cushioning effect, it is to avoid hard
Property striking after main part 10 cause its surface and damage, or hardness is clashed into and causes the position of main part 10 to be moved, and
The deviation that this position movement is caused can cause the precise decreasing of three-dimensional body.Flexible edge part is also provided with Distance-sensing
Device, range sensor for example can be infrared sensor or the range sensor based on other principles, when sensor sensing to away from
From main part 10 distance less than with a certain distance from after, controller 30 is controlled and reduces the rate travel of mobile supporting plate 50, distance
Sensor can be a touching switch.Range sensor, the first printhead 41, the second printhead 42, the 3rd printhead 43, beat
Print platform 20, supporting plate 50 are directly or indirectly electrically connected with controller 30, and thus controller 30 controls their work.
For example in a kind of mode, the rotation of the controlled motor of controller 30, motor is realized to the first printhead 41, the by drive disk assembly
Two printheads 42, the 3rd printhead 43, print platform 20, the mobile control of supporting plate 50.
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 20
Calibrated, controller 30 obtains each layer data information of three-dimensional body, and three-dimensional body is three-dimensional body as shown in Figure 2, should
Three-dimensional body has main part 10, suspending part 11 and supporting part 12, and suspending part 11 is connected with supporting part 12 and main part 10 respectively.
Then, as shown in figure 4, the printing step in executive agent portion 10, the first printhead 41 type body material successively
The first height 21 on the up to print platform 20 of print platform 20 is deposited on, main part 10 is consequently formed, the step is being performed
When, supporting plate 50 is distant apart from print platform 20, and in other words, supporting plate 50 is not in the projected area of print platform 20
In domain.
Then, as shown in figure 5, the step of performing mobile supporting plate 50, controller 30 sends instruction preparation printing three-dimensional article
The supporting part 12 of body.A part for the edge part of supporting plate 50 is mobile and touches to main part 10.Specifically, travel mechanism drives
To the second highly 22 of the top of print platform 20, supporting plate 50 is moved near main part 10 supporting plate 50 with first rate first
Vertical portion position, the sensor sensing of flexible edge part to its apart from main part 10 distance less than after setpoint distance,
Controller 30 controls supporting plate 50 with the second speed slowly near main part 10, until flexible edge part touches supporting part 10
Afterwards, supporting plate 50 then stops the movement in horizontal direction.Because flexible edge part has elasticity, therefore can play slow well
Punching is acted on, and preferably using energy absorbing material or space wadding, space wadding can to greatest extent reduce supporting plate to flexible edge part
50 pairs of percussions of main part 10.Second height 22 is in the lower section of the first height 21.
Then, as shown in fig. 6, performing the printing step of supporting part 12, the second printhead 42 is successively beaten in supporting plate 50
Impression is into supporting part 12.Because the position that supporting plate 50 can move to the second height 22 is used to undertake support portion 12, therefore branch
Support part 12 needs the highly significant of printing less.It is the first height 21 that existing supporting part 12 needs the normal level of printing.Most
Afterwards, the printing step of suspending part 11 is performed, successively printing forms suspending part 11 to the first printhead 41 on supporting part 12.Suspending part
11 printings can just complete the printing of whole three-dimensional body after finishing.
Second embodiment：
The present embodiment is essentially identical with above-mentioned first embodiment, is only given with regard to difference is discussed in detail below.
, less than the density of main part 10, the size of density can be according to specifically beating for the density of the supporting part 12 of the present embodiment
India side formula determines that printhead extrudes a thread printed material of melting, horizontal filamentary material and longitudinal direction in supporting plate 50
Filamentary material is overlapped and intersected, and eventually forms a three-dimensional body for Rotating fields.Main part 10 generally requires density structure higher,
And supporting part 12 just for the sake of temporary due to playing certain supporting role, therefore can print to form loose, density
Relatively low structure.After three-dimensional body shaping, then need to remove supporting part 12.The density of main part 10 is close with suspending part 11
Degree is identical.
The print head assembly of the present embodiment also includes the 3rd printhead 43, and binding agent is mounted with the 3rd printhead 43,
Before performing supporting part printing step, the 3rd printhead 43 smears a layer binder, the first of supporting part 12 in supporting plate 50
Layer（Following bottom）It is covered on the binding agent in supporting plate 50.Because the density of the supporting part 12 of the present embodiment is smaller, and
It is more loose, therefore the second printhead 42, when printing backing material in supporting plate 50, the bottom surface of supporting part 12 is susceptible to
Position is moved, and after spraying a layer binder in the supporting plate 50, binding agent can play adhesion to the bottom surface of supporting part 12
Fixation, so as to the unexpected position for avoiding supporting part 12 is moved.
In other embodiments, supporting plate 50 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 three
As the reserved area in the portion that undertakes support during dimension object, portion is undertaken support when second area is as second three-dimensional body of printing
Reserved area, the 3rd region is when the 3rd three-dimensional body is printed as the reserved area in the portion that undertakes support.When printing completes the
During one three-dimensional body, the supporting part or binding agent remained on the first area on circular base slab can hinder second three-dimensional article
The printing of body.Even if on the supporting plate removal supporting part after, this blanketing is still present because remove supporting part when
Wait, the bottom surface of supporting part is likely to residual solids in the upper surface of circular base slab, if directly changing circular base slab
Or it is cleaned, then can reduce operating efficiency.Now, after circular base slab rotates to an angle around its center of circle so that
Second projection of the suspending part of three-dimensional body can just in second area, and second area is clean surface, therefore can
As the printing of supporting part.After the printing of second three-dimensional body of completion, circular base slab rotates certain angle around its center of circle
After degree 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 region
It is clean surface, therefore can be as the 3rd print area of the supporting part of three-dimensional body, the supporting part in the 3rd region
Printing after the completion of, then complete the 3rd print procedure of the suspending part of three-dimensional body.
3rd 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 fig. 7, this reality
Apply example and a kind of three-dimensional printer is provided, it includes print head assembly 130, print platform 113, the power list of controller 120 and first
Unit 140.
Print head assembly 130 is respectively relative to print platform 110 and is independently moved along three-dimensional.Controller 120 is distinguished
Electrically connected with print head assembly 130 and print platform 113.In a kind of type of drive, the rotation of the motor of controller 120 is provided
Power, motor drives the movement of print platform 113 or print head assembly 130 by drive disk assembly.First power unit 140 is loaded
There is foaming agent, the first power unit 140 is supplied to foaming agent in melter 133 and printed material mixed melting.
As shown in figure 8, print head assembly 130 includes melter 133, printing silk 138 relies on driving wheel 139 and support wheel
141 cooperation provides power, and printing silk 138 can be progressed into melter 133.Printing silk 138 is in melter 133
According on preset program layer by layer deposition to print platform 113 after interior melting.
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 140 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 120
Property connection.
When supporting part 12 are printed, the first power unit 140 is added to foaming agent in melter 133, 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 12 is formed on print platform 113, the density of the density less than undressed printing silk 138 of supporting part 12 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 130 of the present embodiment only has
One printhead, the printhead can be as the printing of main part 10, supporting part 12 and suspending part 11, when type body portion 10
When, the first power unit 140 is idle, that is, foaming agent do not enter in melter 133.When printing supporting part 12
When, the first power unit 140 is added to foaming agent in melter 133, shape after foaming agent and the printing mixed melting of silk 138
Into backing material, backing material layer by layer deposition forms supporting part 12 on print platform 113.The main part 10 of the present embodiment, branch
Support part 12 and suspending part 11 refer to Fig. 1 and Fig. 2.
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, perform the forming step of three-dimensional body main part 10, print head assembly 130 printing silk 38 is melted after by
Layer is deposited on print platform 113 main part 10 for forming three-dimensional body.
Then, perform controller and judge step, when controller judge to need the supporting part 12 of printing three-dimensional body when
Wait, start the first power unit 140 and work.
Then, the printing step of supporting part 12 is performed, the first power unit 140 works, motor drives handle after screw rod rotation
Foaming agent is brought into melter 133 and forms backing material with printing silk 138 mixed melting, and printed material is adding foaming agent
Volume is expanded afterwards.Print head assembly 130 on the backing material layer by layer deposition of mixed melting to print platform 113 forming
Supporting part 12.
Finally, after the printing step of supporting part 12 is completed, printing forms suspending part 11 on supporting part 12, completes whole
The shaping of three-dimensional body.From such scheme, when supporting part is printed, foaming agent is added in melter, foamed
Cause that the volume of printed material is expanded after agent and printed material mixed melting, the melted material layer by layer deposition of expansion is in printing
Supporting part is formed on platform, the density of supporting part is accordingly reduced, and the weight of the backing material for using accordingly is reduced, so as to realize drop
The purpose of low cost.Especially for large-sized object, such as shaping of human body, building model or material object, the cost of backing material
Save highly significant.
Fourth embodiment
The three-dimensional printer of the present embodiment is essentially identical with 3rd embodiment, only makes description with regard to difference below.Such as Fig. 9 institutes
Show, print head assembly includes the first printhead 131 and the second printhead 132.Type body material is mounted with first printhead 131
Material, the first printhead 131 can be independently moved with respect to print platform 113 along three-dimensional.Second printhead 132 includes melter
133, melter 133 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 133, foaming agent is delivered to melter 133 by the first power unit along the second through hole.
First printhead 131 completes the printing step of main part 10 and suspending part 11.When type body portion 10, the
The step of two printheads 132 have completed foaming agent and printed the mixed melting of silk, volume is expanded.Second printhead
132 preparation works, the second printhead 132 forms the backing material layer by layer deposition after volumetric expansion on print platform 113 branch
Support part 12, this mode saves the time compared to first embodiment.Type body material is the three-dimensionally shaped silks of PLA or ABS tri-
Dimension shaping silk or the three-dimensionally shaped silks of PP, printing backing material is the three-dimensionally shaped dusty materials of PLA or the three-dimensionally shaped powder of ABS
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 10, it is necessary in melter
Mixing adds the printing step that can just continue supporting part 112 after foaming agents in 133, it is clear that the operating efficiency of this mode compared with
Slowly.Comparatively speaking, after first printhead 131 of the present embodiment completes the print job of main part 10, the second printhead 132 is
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 133 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 12 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 12 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 12 includes the first density supporting part, the second density supporting part successively from bottom to top
With triple density supporting part, triple density supporting part is identical with original print silk density, and such mode contributes to suspending part
11 bottom surface is molded on triple density supporting part 12.
5th embodiment
The 3 D-printing of the present embodiment has made further improvement on the basis of several embodiments above.As shown in Figure 10,
The three-dimensional printer of the present embodiment includes print head assembly, print platform 210 and controller 220.Print head assembly has multiple
Printhead, the print head assembly of the present embodiment includes the first printhead 231, the second printhead 232 and the 3rd printhead 233.Beat
Print head assembly can be independently moved relative to print platform 210 along three-dimensional.Controller 220 respectively with the first printhead 231,
The electrical connection of second printhead 232, the 3rd printhead 233 and the controlling of print platform 210.For example in a kind of mode, controller
The rotation of 220 controlled motors, motor is realized printing the first printhead 231, the second printhead the 232, the 3rd by drive disk assembly
First 233, the mobile control of print platform 210.
A kind of printing silk of color is mounted with each printhead, specifically, white is loaded in the first printhead 231
Printing silk, loads red printing silk in the second printhead 232, blue line print silk is loaded in the 3rd printhead 233.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 11, printhead includes melter 234, and printing silk 235 is after melting in melter 234 from nozzle
239 spray, and according on preset program layer by layer deposition to print platform 210.Printing silk 235 can lean on two delivery wheels to move
In printing silk 235 to melter 234, two delivery wheels include a driving wheel 236 and a driven pulley 237, driving wheel 236
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 12, the first power unit includes the first cavity 241, the first spiral powder feeding rod 242 and the first motor
243, first spiral powder feeding rod 242 is set in the first cavity 241, the first spiral powder feeding rod 242 is driven with the first motor 243,
Drive the first spiral powder feeding rod 242 that glass fibre 244 is brought into melter 234 under the work of the first motor 243, the first electricity
Machine 243 is electrically connected with controller 220.Controller 220 controls the first spiral by controlling the rotating speed of the first motor 243
The rotating speed of powder feeding roller 242, 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 241 first outlet 245, 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 244, first
Power unit is interior supplied to melter 234 glass fibre 244 and prints the mixed melting in melter 234 of silk 235.
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 234, the second motor is electrically connected with controller 220.The rotating speed that controller 220 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 234 plastics softening agent and prints the mixed melting of silk 235.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
Three-dimensional body as shown in fig. 13 that is printed, in a storage module, the three-dimensional body 250 has the data information memory of the three-dimensional body
Lower portion 251, center section 252 and upper portion 253, wherein lower portion 251 for white, center section 252 for it is red,
Upper portion 253 is grey.As shown in figure 14, center section 252 specifically includes Part I 254, Part II 255 and the 3rd
Part 256, the wherein hardness of Part I 254 are identical with the hardness of printing silk 235, and the hardness of Part II 255 is more than beats
Print the hardness of silk 235, the hardness of the hardness less than printing silk 235 of Part III 256.
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 251 of object, therefore it is white to select the first to print the color of silk first.Controller 220 is controlled
Make the first printhead 231 to work, the first printhead 231 drives the printing silk of white to be deposited on print platform 210 after melting
Form lower portion 251.
Then, after the printing of lower portion 251 is finished, the print procedure of center section 252, controller 220 are proceeded by
Control the second printhead 232 that red silk is deposited on print platform 210 after melting in melter 234 and form center section
252。
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.
Sixth 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.
7th embodiment
In the 5th 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.
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 first after there is mixing, melting in mixed melting room 350
The melted material of color is planted, mixed process certain time melts certain time such as 45 in such as 30 seconds or 1 minute to uniform
Second 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 (6)
1. there is the three-dimensional printer of backing material printhead, 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 printhead, is mounted with type body material, first printhead can relatively described print platform along three-dimensional
Independently move；
Second printhead, is mounted with printing backing material, second printhead can relatively described print platform along three-dimensional
Independently move；
Supporting plate component, with the travel mechanism and supporting plate that link together, the travel mechanism drives the supporting plate phase
Moved on three-dimensional for the print platform.
2. the three-dimensional printer with backing material printhead according to claim 1, it is characterised in that
The print head assembly also includes the 3rd printhead, and binding agent is mounted with the 3rd printhead.
3. the three-dimensional printer with backing material printhead according to claim 1 and 2, it is characterised in that
The edge part of the supporting plate is flexible edge part, and the flexible edge part is provided with range sensor, and the distance is passed
Sensor is electrically connected with the controller.
4. there is the forming method of the three-dimensional printer of backing material printhead, it is characterised in that the 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 includes：
First printhead, is mounted with type body material, first printhead can relatively described print platform along three-dimensional
Independently move；
Second printhead, is mounted with printing backing material, second printhead can relatively described print platform along three-dimensional
Independently move；
Supporting plate component, with the travel mechanism and supporting plate that link together, the travel mechanism drives the supporting plate phase
Moved on three-dimensional for the print platform, the controller is electrically connected with the travel mechanism；
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 the three-dimensional body has main part, outstanding
Empty portion and supporting part, the suspending part are connected with the supporting part and the main part respectively；
Then, executive agent portion printing step, first printhead is flat in the printing type body material layer by layer deposition
The first height on the up to described print platform of platform；
Then, the step of performing the mobile supporting plate, the controller sends instruction preparation printing suspending part, the moving machine
Structure drives the supporting plate to the second height above the print platform, and the edge part of the supporting plate is moved and touched to institute
Main part is stated, second height is in the lower section of first height；
Then, supporting part printing step is performed, successively printing forms supporting part to second printhead in the supporting plate；
Finally, suspending part printing step is performed, successively printing forms suspending part to first printhead on the supporting part.
5. the forming method of the three-dimensional printer with backing material printhead according to claim 4, it is characterised in that
The density of the supporting part less than the main part density, the density phase of the density of the main part and the suspending part
Together；
The print head assembly includes the 3rd printhead, and binding agent is mounted with the 3rd printhead, is performing the support
Before portion's printing step, the 3rd printhead smears a layer binder, the ground floor of the supporting part in the supporting plate
It is covered on the binding agent in the supporting plate.
6. the forming method of the three-dimensional printer with backing material printhead according to claim 4, it is characterised in that
The edge part of the supporting plate is flexible edge part, and the flexible edge part is provided with range sensor, and the distance is passed
Sensor is electrically connected with the controller；
The travel mechanism drives the supporting plate to the second height above the print platform, and the supporting plate is first with the
One speed is moved to the position of the vertical portion near main part, and the sensor sensing of flexible edge part is to it apart from main part
Less than after setpoint distance, the controller controls the supporting plate with the second speed slowly near main part to distance, until described
After flexible edge part touches supporting part, supporting plate then stops the movement in horizontal direction.
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| CN201710088123.9A CN106827504A (en) | 2017-02-19 | 2017-02-19 | Three-dimensional printer with backing material printhead |
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Application publication date: 20170613 |