CN106738876A - Color three-dimensional printer and its Method of printing - Google Patents
Color three-dimensional printer and its Method of printing Download PDFInfo
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- CN106738876A CN106738876A CN201611138838.2A CN201611138838A CN106738876A CN 106738876 A CN106738876 A CN 106738876A CN 201611138838 A CN201611138838 A CN 201611138838A CN 106738876 A CN106738876 A CN 106738876A
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- 238000007639 printing Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 191
- 238000001125 extrusion Methods 0.000 claims abstract description 77
- 239000000203 mixture Substances 0.000 claims abstract description 72
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 22
- 239000012943 hotmelt Substances 0.000 claims abstract description 20
- 239000011148 porous material Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims description 18
- 239000011230 binding agent Substances 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 13
- 239000003086 colorant Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 8
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- 230000005540 biological transmission Effects 0.000 description 3
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- 238000010438 heat treatment Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 210000000867 larynx Anatomy 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
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- 238000010992 reflux Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- NFGXHKASABOEEW-UHFFFAOYSA-N 1-methylethyl 11-methoxy-3,7,11-trimethyl-2,4-dodecadienoate Chemical compound COC(C)(C)CCCC(C)CC=CC(C)=CC(=O)OC(C)C NFGXHKASABOEEW-UHFFFAOYSA-N 0.000 description 1
- 238000010146 3D printing Methods 0.000 description 1
- 208000032765 Device extrusion Diseases 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
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Classifications
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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
-
- 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
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses a kind of color three-dimensional printer, belong to three-dimensional printer field, solve the problems, such as that trunnion backflow is blocked in the prior art, the technical scheme for solving the problem mainly includes controller, extrusion device and print platform, controller controls extrusion device and print platform work, print platform is provided with printing head, extrusion device is connected with printing head, extrusion device includes feeding assembly and colour mixture component, feeding assembly is located at the upstream side of colour mixture component and is connected with colour mixture component, feeding assembly is provided with many sets, colour mixture component includes hot melt chamber and a Duo Gen trunnions, trunnion is corresponded with feeding assembly, consumptive material is delivered to trunnion by feeding assembly, the downstream of trunnion connects with hot melt chamber, be provided with the non-return piece for following consumptive material trunnion to be closed after moving when consumptive material flows back in the pore of trunnion.Present invention is mainly used for color three dimension printing.The present invention also provides a kind of Method of printing of above-mentioned color three-dimensional printer.
Description
Technical field
The present invention relates to three-dimensional printer, particularly a kind of color three-dimensional printer and its Method of printing.
Background technology
Using extensively, commonplace is the printer for using fusion sediment technology to three-dimensional printing technology now.It is existing
The three-dimensional printer of fusion technology is used with prefabricated plastic cord as material and plastics are melted simultaneously by single nozzle mostly
Extrusion, completes the shaping of workpiece, generally, a kind of material or a kind of color can only be used for single model.
To print colors or the Single-issue of material, existing three-dimensional printer also has some improvement projects.
The first improvement project is fixed in three-dimensional printer movable platform using multiple hot junctions, defeated using various wire rods
Enter so as to realize multi-color printing, because multiple hot junctions are fixed in three-dimensional printer movable platform parallel, there is distance between nozzle,
This distance needs accurate measure and is corrected in software, can otherwise bring colour superimposition during multi-color printing.Many
In nozzle system, multiple is arranged on conplane shower nozzle due to alignment error, does not have probability in the shower nozzle for working and prints
Model produce and scratch, may damage model and shower nozzle when serious.In three-dimensional printer when using, not inside the shower nozzle of work
The plastics for melting may be still suffered from, the spill and leakage of plastics, contamination model is brought.Importantly, this scheme can not be realized very
Color three dimension printing in positive meaning.The color of printing is still limited by the wire color of input.
Second improvement project is, using the hot junction for customizing, to be directly inputted in shower nozzle using various consumptive materials and finally used
One shower nozzle extrusion, realizes the colour mixture of various different consumptive materials.This programme must simultaneously insert three kinds of consumptions of color when in use
Material, can otherwise cause to be blocked at trunnion due to melting the backflow of consumptive material.Due to the three-dimensional printer using fusion sediment technology
In normal work in order to avoid consumptive material spill and leakage contamination model, it is necessary to shower nozzle not extruded material when pumpback is carried out to consumptive material, should
Operation can be performed largely in a shaping for model, and the customization hot junction yet with this programme possesses the geometric form of complexity
Shape, increases resistance, so as to can increase required extrusion dynamics and weaken the validity of consumptive material high speed pumpback, is easily caused
Consumptive material is remained, and weakens the beneficial effect that pumpback originally can bring, while easily bringing stifled when using, pumpback setting is improper in design
Plug.In addition when carrying out colour mixture in nozzle, because colour mixture chamber is small, easily there is colour mixture uneven and cause the color of extrusion can not
Control, that is to say, that although the effect of colour can be exported, color can not be controlled accurately.Therefore, this programme uses inconvenient, easily stifled
Plug, the uncontrollable drawback of unstable, color limit it and apply aborning.
The content of the invention
The purpose to be reached of the invention is just to provide a kind of color three-dimensional printer, it is to avoid consumptive material excessive backward flow causes larynx
Blocked at pipe.
In order to achieve the above object, the present invention is adopted the following technical scheme that：Color three-dimensional printer, including controller, squeeze
Go out device and print platform, controller control extrusion device and print platform work, print platform is provided with printing head, extrusion dress
Put and connected with printing head, extrusion device includes feeding assembly and colour mixture component, feeding assembly is located at the upstream side of colour mixture component
And connected with colour mixture component, feeding assembly is provided with many sets, and colour mixture component includes hot melt chamber and a Duo Gen trunnions, trunnion and charging group
Part is corresponded, and consumptive material is delivered to trunnion by feeding assembly, and the downstream of trunnion connects with hot melt chamber, is provided with the pore of trunnion
Consumptive material follows the non-return piece that consumptive material closes trunnion after moving when flowing back.
Further, the pore of the trunnion includes the first hole section and the second hole section that are connected, the aperture of the first hole section
, less than the aperture D2 of the second hole section, the first hole section is positioned at the upstream side of the second hole section, the connection of the first hole section and the second hole section for D1
Place forms enlarging, and in the second hole section, non-return piece follows consumptive material to move to enlarging to match somebody with somebody with enlarging non-return piece when consumptive material flows back
Close sealing.
Further, the non-return piece is spheroid, and enlarging is part pyramid like configuration, a diameter of D3 of spheroid, D3 more than D1 and
Less than D2.
Further, the locating part for preventing non-return piece from the second hole section is moved out with consumptive material is provided with second hole section, is limited
The part that position part is stretched into the second hole section forms communication port with the hole wall of the second hole section, and the cross-sectional area of communication port is not less than second
The 1/3 of hole section cross-sectional area.
Further, the locating part is screw, and trunnion is provided with the screwed hole with screw fit.
Further, the feeding assembly includes rack for depositing wire consumptive material and for by the line on rack
Shape consumptive material is input into the feed appliance of colour mixture component, and feed appliance is one-to-one with trunnion to be connected.
Further, the feeding assembly includes the hopper of storage consumptive material raw material and for consumptive material raw material to be extruded into wire consumption
The extruder of material, hopper is one-to-one with extruder to be connected, and extruder is one-to-one with trunnion to be connected.
Further, binder component is provided between the extruder and colour mixture component, binder component includes what is be arranged in pairs
Nip rolls, the wire consumptive material of extruder extrusion reaches aimed dia from after being passed through between paired nip rolls.
Further, the downstream of the colour mixture component is provided with for by the follower of the consumptive material output after colour mixture, exporting
Device includes output seat, output driving wheel, output driven pulley and output motor, and output motor drives output driving wheel, exports driven
Wheel is rotatably connected on output seat, and output gap is formed between output driving wheel and output driven pulley, and output seat is provided with charging
Mouth and discharging opening, the discharging direction of the feedstock direction, output gap and discharging opening of charging aperture is on the same line.
After adopting the above technical scheme, the invention has the advantages that：Non-return piece can be with consumptive material in the pore of trunnion
Flow and move, i.e., there is stroke in the pore of trunnion, when consumptive material flows from upstream toward downstream, non-return piece can be driven in larynx
To downstream movement in the pore of pipe, so as to trunnion be opened, allow the consumptive material can be with proper flow, when consumptive material flows back, in trunnion
Consumptive material upstream flows back from downstream, can drive non-return piece in the pore of trunnion to movements upstream, will after certain stroke is moved
Trunnion is closed, and consumptive material excessive backward flow can not only be avoided to cause to be blocked at trunnion, and because non-return piece will not flow back in consumptive material
When trunnion is closed at once so that the upstream end of trunnion can keep balancing with downstream end pressure in reflux course, Bu Huiyin
For trunnion upstream is flowed back, colour mixture component is continued to output causes trunnion downstream to form negative pressure, is conducive to allowing non-return piece by trunnion reliability
Close, while after following current is restarted, non-return piece is conducive to again, and trunnion is quickly opened in motion in time.
The present invention also provides a kind of Method of printing using any of the above-described color three-dimensional printer, comprises the following steps：
1) print parameters are set in controller；
2) consumptive material of different colours is added in each feeding assembly, controller controls each set charging according to print parameters respectively
Component conveys consumptive material with respective feed rate to colour mixture component；
3) colour mixture component carries out colour mixture to consumptive material；
4) consumptive material after colour mixture is delivered to print platform；
5) controller controls print platform according to print parameters, and target item is printed by printing head；
6) while printing head is printed, controller controls each set feeding assembly according to print parameters with respective respectively
Feed rate to colour mixture component conveying consumptive material mixed colours.
Further, consumable quantity of the controller according to used by each color on target item calculates extrusion device output
The volume of each color consumptive material, starts colour mixture and exports latter color after the consumptive material of the previous color of extrusion device output predetermined
Consumptive material.
Further, the controller carries out detection and records and obtain crowded to the diameter and speed of extrusion device output consumptive material
Go out the flow that device exports consumptive material, and be compared with the flow of setting in print parameters, then to the feeding speed of feeding assembly
Rate is adjusted.
Further, the print platform is provided with auxiliary block, in extrusion device from previous colour switching into latter color
During, printing head prints in auxiliary block consumptive material.
Further, the controller reduces the consumptive material output speed of extrusion device in consumptive material pumpback, after pumpback terminates,
The consumptive material output speed output consumptive material that extrusion device is maintained like, until extrusion device is extensive to the consumptive material volume between printing head
After answering normally, extrusion device recovers original consumptive material output speed.
After adopting the above technical scheme, the invention has the advantages that：Because trunnion can be closed in backflow by non-return piece
Close, therefore the pumpback of printing head can be coordinated to reduce the feed rate of extrusion device so that extrusion device and printing head
Between consumptive material volume big change will not occur, be also beneficial to stop the fast normal print job of quick-recovery after pumpback so that
Improve printing effect and print quality.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the internal structure schematic diagram of extrusion device in the embodiment of the present invention one；
Fig. 3 is the internal structure schematic diagram (axle survey) of extrusion device in the embodiment of the present invention one；
Fig. 4 is the decomposing schematic representation of extrusion device in the embodiment of the present invention one；
Fig. 5 is the schematic diagram of colour mixture component in the embodiment of the present invention one；
Fig. 6 is the schematic diagram of follower in the embodiment of the present invention one；
Fig. 7 is the schematic diagram of feeding assembly in the embodiment of the present invention two.
Specific embodiment
Embodiment one：
Present invention firstly provides a kind of color three-dimensional printer, as shown in figure 1, including controller K, extrusion device J and beating
Print platform P, controller K control extrusion device J and print platform P work, print platform P is provided with printing head P1, extrusion device J
Connected with printing head P1.Extrusion device includes feeding assembly and colour mixture component, and feeding assembly is located at the upstream side of colour mixture component
And connected with colour mixture component, feeding assembly is provided with many sets, and colour mixture component includes hot melt chamber and a Duo Gen trunnions, trunnion and charging group
Part is corresponded, and consumptive material is delivered to trunnion by feeding assembly, and the downstream of trunnion connects with hot melt chamber, is provided with the pore of trunnion
The non-return piece that consumptive material can close trunnion after following consumptive material to move when flowing back.
Make an explanation first, the description such as signified upstream, downstream in the present invention is the stream of consumptive material when being printed with reference to printer
Come what is defined, the print platform that consumptive material flow to three-dimensional printer from feeding assembly is printed, therefore feeding assembly in dynamic direction
Starting point is may be considered, and the shower nozzle of print platform may be considered terminal.Non-return piece can be with consumptive material in the pore of trunnion
Flow and move, i.e., there is stroke in the pore of trunnion, when consumptive material flows from upstream toward downstream, non-return piece can be driven in larynx
To downstream movement in the pore of pipe, so as to trunnion be opened, allow the consumptive material can be with proper flow, when consumptive material flows back, in trunnion
Consumptive material upstream flows back from downstream, can drive non-return piece in the pore of trunnion to movements upstream, will after certain stroke is moved
Trunnion is closed, and consumptive material excessive backward flow can not only be avoided to cause to be blocked at trunnion, and because non-return piece will not flow back in consumptive material
When trunnion is closed at once so that the upstream end of trunnion can keep balancing with downstream end pressure in reflux course, Bu Huiyin
Chamber is heated for trunnion upstream is flowed back and is continued to output causes trunnion downstream to form negative pressure, is conducive to allowing non-return piece reliably to close trunnion
Close, while after following current is restarted, non-return piece is conducive to again, and trunnion is quickly opened in motion in time.Non-return piece closes trunnion
Close, the consumptive material of fusing stays in the upstream end (cold end) of the region without inflow trunnion of heating, so as to avoid trunnion from blocking.Due to mixed
Color process is carried out in an independent hot melt chamber, rather than in nozzle, it means that there is bigger blending space to promote face
Color is sufficiently mixed.
As shown in Fig. 2 in the present embodiment, extrusion device J is from upstream to downstream and sets gradually including feeding assembly A, pressure
Material component B, colour mixture component C and follower D, feeding assembly, binder component, colour mixture component and follower are each attached to extrusion device
On the housing 1 of J.Feeding assembly and binder component are respectively equipped with four sets, in order to reduce the occupancy in space, feeding assembly and binder group
Part is divided into two-layer setting, and every layer each two sets, be that this includes a shelf 11 and a base plate 12 in housing 1, and shelf 11 is used for installation position
In two sets of feeding assemblies and binder component on upper strata, two sets of feeding assemblies and binder component are fixed on the base plate 12 of housing 1 in addition
On.In order to increase the intensity of housing 1, framework can be increased, framework is made up of plurality of rods body 13, then by plate body 14, shelf 11
Formation housing 1 on the body of rod 13 is installed to a base plate 12.
Seen with reference to Fig. 3 and Fig. 4, feeding assembly includes the hopper 2 of storage consumptive material raw material and for consumptive material raw material to be extruded into line
The extruder of shape consumptive material 9, hopper 2 is one-to-one with extruder to be connected, and extruder is one-to-one with trunnion 41 to be connected.After using hopper 2,
Can be using lower-cost graininess or the consumptive material raw material of other non-linear shape.In order to avoid equipment dallies, can be set in hopper 2
There is the detector for detecting consumptive material raw material, sent signals to carry by detector when the consumptive material raw material in hopper 2 will exhaust
The user that wakes up adds consumptive material raw material.Consumptive material raw material can be from colored raw material, it is also possible to by mixing toner, by charging group
The consumptive material of color of object is obtained after part mixed processing.
And in order to granular consumptive material raw material is made into wire consumptive material 9, it is necessary to extruder is realized.Extruder includes material extrusion
Cylinder 21 and extrusion screw rod 22, extrusion screw rod 22 are located in packing cylinder 21, and hopper 2 is connected by feed pipe 201 with packing cylinder 21, will
Consumptive material raw material sends into packing cylinder 21, in order to feed conveniently, the upstream end connection charging cell body 23 of packing cylinder 21, charging cell body 23
Top sets charging hole 231, and feed pipe 201 is connected with charging hole 231, and charging cell body 23 is fixed on housing by charging support 24
On 1.Set motor 25 on housing 1 to drive extrusion screw rod 22, extrusion screw rod 22 is through charging cell body 23 and feeds branch
Frame 24 is connected with motor 25, can be that two kinds, the three kinds or four kinds consumptive materials of color carry out colour mixture during due to colour mixture, because
The charging action of this different feeds component can be with unrelated, therefore each extrusion screw rod 22 is designed with a motor 25
Drive, motor 25 can use servomotor.Drive connection mode between motor 25 and extrusion screw rod 22 can be with
Using gear drive, driving gear 251 is set on the motor shaft of motor 25, driven gear is set on extrusion screw rod 22
221, driving gear 251 engages to realize transmission with driven gear 221.In addition belt belt wheel transmission or chain chain can also be used
Wheel transmission etc. the common kind of drive.Extruder also includes to the consumptive material extruded heat the heater 26 of fusing, heating
Device 26 is located at the downstream of packing cylinder 21, and heater 26 is connected by the first thermal insulation barriers 27 with heated holder 28, heated holder 28
It is fixed on housing 1, heater 26 is provided with extrusion nozzle 29, the consumptive material for melting from extrusion nozzle 29 is heated by heater 26
It is extruded into wire consumptive material 9.The outside of extrusion nozzle 29 is provided with the first fin 291, promotes consumptive material radiating, it is to avoid consumptive material is extruded
It is sagging afterwards.Because the radiating effect of the first fin 291 is limited, wire consumptive material 9 extrude after still may be affected by gravity and under
Hanging down, therefore the first cooling fan 20 is provided with housing 1 carries out cooling solid to wire consumptive material 9, but wire consumptive material 9 is still
Form in flexible relative, can carry out moulding processing.
In order to allow wire consumptive material 9 diameter disclosure satisfy that trunnion 41 pore internal diameter requirement, extruder and colour mixture component
Between be provided with binder component, binder component includes the nip rolls 31 being arranged in pairs, and the wire consumptive material 9 of extruder extrusion is from paired
Aimed dia is reached after being passed through between nip rolls 31.Nip rolls 31 is driven roll, can band dynamic pressure when wire consumptive material 9 is downstream moved
Material roller 31 is rotated.Nip rolls 31 is arranged on binder support 32, and binder support 32 is arranged on housing 1.Aimed dia can be with root
It is configured according to needs.
Due to colour mixture component only have it is a set of, and in order to many wire consumptive materials 9 are input in colour mixture component, binder component
Downstream is provided with passage 33, and wire consumptive material 9 enters passage 33, downstream and the trunnion 41 of passage 33 after passing through binder component
Connect.When consumptive material uses plastics, passage 33 can use teflon pipe, and teflon pipe can have specific shape, by many
Wire consumptive material 9 is directed in colour mixture component.
Colour mixture component includes hot melt chamber 4 and four trunnions 41, the every correspondence piece passage 33 of connection of trunnion 41, this reality
Apply and set altogether in example four trunnions 41, the downstream of trunnion 41 connects with hot melt chamber 4, hot melt chamber 4 has the larger space can be with
Four wire consumptive materials 9 are melted and admixed together again.The downstream of trunnion 41 is stretched into hot melt chamber 4, therefore hot melt chamber 4 exists
Trunnion 41 can also be heated in heating process, preheating fusing can be first carried out hence into the consumptive material in trunnion 41.
With reference to Fig. 5, the pore of trunnion 41 includes the first hole section 411 and the second hole section 412 that are connected, the first hole section 411
Aperture D2s of the aperture D1 less than the second hole section 412, the first hole section 411 is located at the upstream side of the second hole section 412, the first hole section
411 and second the junction of hole section 412 form enlarging 413, in the second hole section 412, non-return piece 42 is in consumptive material for non-return piece 42
Consumptive material is followed to move to enlarging 413 and the fitted seal of enlarging 413 during backflow.In the present embodiment, non-return piece 42 is spheroid, enlarging
413 is part pyramid like configuration, and a diameter of D3 of spheroid, D3 are more than D1 and less than D2.Additionally, non-return piece 42 can also use hitching post,
The upstream end of hitching post sets part pyramid like configuration, and sealing is realized so as to coordinate with enlarging 413.Except part pyramid like configuration, it is also possible to adopt
Realized sealing with planar structure or arc surface structure etc..
Due to non-return piece 42 can the free movement in the second hole section 412, in order to prevent non-return piece 42 from being moved out with consumptive material
Second hole section 412, locating part 43 is provided with the second hole section 412, and the flowing of consumptive material, locating part 43 are influenceed in order to avoid locating part 43
The hole wall for stretching into part in the second hole section 412 and the second hole section 412 forms communication port, and the cross-sectional area of communication port is not less than the
The 1/3 of the cross-sectional area of two hole section 412.Locating part 43 can use screw, and trunnion 41 be provided with the screwed hole with screw fit, can be with
The cross-sectional area of communication port is adjusted by the position for adjusting locating part 43, realizes the control of consumptive material flow velocity.Except of course that
Screw, locating part 43 using parts such as pin or back-up rings, or can also be divided into what two parts processed in the second hole section 412
On the basis of, locating part 43 can also be the convex tendon of the directly shaping in the second hole section 412.
Fig. 3 is returned to, colour mixture component also includes hot melt support 44, and hot melt support 44 is fixed on housing 1, on hot melt support 44
The second thermal insulation barriers 45 are provided with, hot melt chamber 4 is fixed on the second thermal insulation barriers 45, and trunnion 41 is set through the second thermal insulation barriers 45, hot melt
The downstream in chamber 4 is provided with the second nozzle 46 of the consumptive material output after colour mixture.The outside of second nozzle 46 can set second and dissipate
Backing 461.
Initial feed pressure can not meet the demand of consumptive material high speed discharging after colour mixture, therefore the extrusion of second nozzle 46 is mixed
Wire consumptive material 9 after color, is exported by follower.Follower is located at the downstream of colour mixture component, defeated with reference to shown in Fig. 3 and Fig. 6
Going out device includes output seat 51, output driving wheel 52, output driven pulley 53 and output motor 5, and the output shaft of output motor 5 is through defeated
Go out seat 51, output driving wheel 52 can be directly installed on the output shaft of output motor 5, and output motor 5 drives output driving wheel
52, output driven pulley 53 is rotatably connected on output seat 51, and outlet chamber is formed between output driving wheel 52 and output driven pulley 53
Gap, output seat 51 is provided with charging aperture 501 and discharging opening 502, the feedstock direction of charging aperture 501, output gap and discharging opening 502
Discharging direction on the same line.Output seat 51 includes matrix 511 and lid 512, and matrix 511 is provided with accommodating output driving wheel
52nd, the storage tank 503 of driven pulley 53 is exported, lid 512 covers storage tank 503.Output driving wheel 52 can use gear, in rotation
Axial tension can be produced to wire consumptive material 9, wire consumptive material 9 is exported when turning.Output motor 5 is fixed on housing 1, exports seat
51 are fixed on output motor 5, and output motor 5 can use servomotor.For the wire consumptive material 9 extruded to second nozzle 46
Fast cooling is carried out, the second cooling fan 54 can be set on lid 512, air vent 504 is provided with lid 512, while
Louvre 505 is set in the side of storage tank 503, the cooling air-flow that the rotation of the second cooling fan 54 is produced is successively from air vent
504th, storage tank 503 and louvre 505 pass through, and realize the fast cooling of consumptive material, and the second cooling fan 54 can also use air draught
Mode, cooling air-flow is then flowed successively through from louvre 505, storage tank 503 and through hole hole.Second cooling fan 54 can also be set
Between second nozzle 46 and output seat 51.Pneumatic joint, the pipe of convenient connection conveying consumptive material can be set on discharging opening 502
Road.Discharging opening 502 can set sensor, for the incoming printer of data for detecting the diameter of wire consumptive material 9 and will read
Controller K.
Consumptive material in the present embodiment uses plastic grain, improves the accuracy of colour mixture, while decreasing the wave of consumptive material
Take, and the price of the price also than plastic cord of plastic grain is much lower.In addition there can also be class with plastics using other
Like the material of performance.
Embodiment two：
Except depositing consumptive material raw material using hopper 2, it is also possible to directly using wire consumptive material 9 come colour mixture, therefore such as Fig. 7 institutes
Show, the feeding assembly in the present embodiment include for deposit wire consumptive material 9 rack 6 and for by rack wire consumption
Material 9 is input into the feed appliance E of colour mixture component, and wire consumptive material 9 is typically placed on rack in rolls, is to set to place bar on this rack
61, coiler 62 is enclosed within placement bar 61 and is rotated in feeding, and feed appliance is one-to-one with trunnion 41 to be connected.Feed appliance and implementation
Follower in example one is similar to, including material feeding seat 71, feeding driving wheel, feeding driven pulley and feeding motor 7, feeding motor 7
Output shaft can be directly installed on the output shaft of feeding motor 7 through material feeding seat, feeding driving wheel, and feeding motor 7 drives and send
Material driving wheel, feeding driven pulley is rotatably connected on material feeding seat, and feeding gap is formed between feeding driving wheel and feeding driven pulley,
Stock support 71 is provided with feeding mouth and feeding port, and the discharging direction of the feedstock direction, feeding gap and feeding port of feeding mouth exists
On same straight line.Due to directly can directly be connected with hot melt chamber 4 using wire consumptive material 9, therefore feeding port.
In above-described embodiment, feeding assembly sets four sets, and the number of feeding assembly can be as needed increased and decreased in actual product
Amount, and can also be needed to select the tricks of feeding assembly specific works according to colour mixture.Because different feeding assemblies can be single
Solely control, therefore the feed speed of the consumptive material of different colours can be controlled to mix different color of objects, according to different ratios
Example can mix the nearly all color of acquisition.
Embodiment three：
The present invention also provides a kind of Method of printing of the color three-dimensional printer in use above-described embodiment, including following step
Suddenly：
1) print parameters are set in controller；
2) consumptive material of different colours is added in each feeding assembly, controller controls each set charging according to print parameters respectively
Component conveys consumptive material with respective feed rate to colour mixture component；
3) colour mixture component carries out colour mixture to consumptive material；
4) consumptive material after colour mixture is delivered to print platform；
5) controller controls print platform according to print parameters, and target item is printed by printing head；
6) while printing head is printed, controller controls each set feeding assembly according to print parameters with respective respectively
Feed rate to colour mixture component conveying consumptive material mixed colours.
Print parameters are set, refer to that the threedimensional model for carrying out target item by computer is designed, generation carries number of colours
According to threedimensional model file, use Slice Software forming layer sheet data, obtain exercise data of the printing head in X, Y, Z axis.
The color data of target item can individually be processed into generation colour mixture file using software controls the extrusion device to work, including every
Plant the parameters such as page order, the volume of required consumptive material of color.All Files is stored in controller.
In the present invention, the instruction that colour mixture file is given will be corresponded with each axle movement instruction of print platform, by one
Individual controller unification is controlled.Print platform and extrusion device are controlled using same controller, and this consumes for extrusion
The speed control of material is favourable, it is possible to prevente effectively from order has the time difference or a certain controller occurs because different controllers send
Problem and problem that another controller still triggers in work, and user such as is suspended, cancelled in print procedure at the equal energy of operation
Timely respond to, it is unaffected.
In specific print procedure, consumable quantity of the controller according to used by each color on target item calculates extrusion device
The volume of each color consumptive material is exported, it is latter to start colour mixture output after the consumptive material of the previous color of extrusion device output predetermined
The consumptive material of color.Because extrusion device is to there is a certain distance between printing head, therefore the consumptive material that printing head is printed will
Colour mixture is extruded well in advance, so exporting the volume of each color consumptive material according to extrusion device to match each color in print parameters
The volume parameter of required consumptive material, both are consistent the precise Printing for being capable of achieving different colours.
In the present embodiment, controller carries out detection and records and extruded to the diameter and speed of extrusion device output consumptive material
Device exports the flow of consumptive material, and is compared with the flow of setting in print parameters, then to the feed rate of feeding assembly
It is adjusted.The volume of consumptive material extrusion is calculated by flow and time, and comparing by flow can be carried out in time
Adjustment so that the volume of consumptive material extrusion is more accurate.Meanwhile, in print procedure, the printing speed of printing head is constantly to become
Change, the speed of extrusion device extrusion consumptive material is also continually changing.Therefore the diameter of consumptive material is exported to extrusion device by controller
Detection record is carried out with speed, control adjustment can be fed back so that actual rate of extrusion during extrusion device output consumptive material
Can match with print parameters.
Colour mixture is carried out because the conversion of different colours needs certain hour, therefore auxiliary block is provided with print platform,
From previous colour switching into during latter color, printing head prints in auxiliary block consumptive material to extrusion device, it is to avoid will
Unwanted color print is on target item.
Controller reduces the consumptive material output speed of extrusion device in consumptive material pumpback, i.e., under the feed rate of feeding assembly
Drop, the consumptive material diameter now extruded after colour mixture can diminish, but due to pumping-back, extrusion device to the consumption between printing head
After material volume is slightly increased, therefore pumpback terminates, the consumptive material output speed output consumptive material that extrusion device is maintained like, until extrusion
After device recovers normal to the consumptive material volume between printing head, extrusion device recovers original consumptive material output speed, in reality
In operation, this process is very fast, because consumptive material Volume Changes are less, the speed for recovering is conducive to improving
Printing effect and print quality.Because the plastic filament formed after colour mixture has certain flexibility, therefore three-dimensional beating is not interfered with
The normal pumpback of print machine.
In addition, when the consumptive material raw material that the detector that controller passes through setting in hopper is judged in hopper will exhaust, can control
Printing head processed removes target item, time-out printing, and reminds user to add consumptive material raw material, and after the addition of consumptive material raw material again
Start printing.
In addition to above preferred embodiment, the present invention also has other implementation methods, and those skilled in the art can be according to this
Invention is variously modified and deforms, and without departing from spirit of the invention, all should belong to determine in claims of the present invention
The scope of justice.
Claims (14)
1. color three-dimensional printer, including controller, extrusion device and print platform, controller control extrusion device and printing are flat
Platform works, and print platform is provided with printing head, and extrusion device is connected with printing head, it is characterised in that the extrusion device bag
Feeding assembly and colour mixture component are included, feeding assembly is located at the upstream side of colour mixture component and is connected with colour mixture component, and feeding assembly sets
There are many sets, colour mixture component includes hot melt chamber and a Duo Gen trunnions, and trunnion is corresponded with feeding assembly, and feeding assembly send consumptive material
To trunnion, the downstream of trunnion connects with hot melt chamber, and being provided with the pore of trunnion when consumptive material flows back after following consumptive material to move will
The non-return piece that trunnion is closed.
2. color three-dimensional printer according to claim 1, it is characterised in that the pore of the trunnion includes what is be connected
First hole section and the second hole section, the aperture D2s of the aperture D1 less than the second hole section of the first hole section, the first hole section are located at the second hole section
Upstream side, the junction of the first hole section and the second hole section forms enlarging, and in the second hole section, non-return piece is in consumptive material for non-return piece
Consumptive material is followed to move to enlarging and enlarging fitted seal during backflow.
3. color three-dimensional printer according to claim 2, it is characterised in that the non-return piece is spheroid, enlarging is circle
Cone structure, a diameter of D3 of spheroid, D3 are more than D1 and less than D2.
4. color three-dimensional printer according to claim 2, it is characterised in that being provided with second hole section prevents non-return
Part moves out the locating part of the second hole section with consumptive material, and the part that locating part is stretched into the second hole section is formed with the hole wall of the second hole section
Communication port, the cross-sectional area of communication port is not less than the 1/3 of the second hole section cross-sectional area.
5. color three-dimensional printer according to claim 4, it is characterised in that the locating part is screw, trunnion is provided with
With the screwed hole of screw fit.
6. according to any described color three-dimensional printer of claim 1 to 5, it is characterised in that the feeding assembly includes using
In storage wire consumptive material rack and for by rack wire consumptive material be input into colour mixture component feed appliance, feed appliance with
The one-to-one connection of trunnion.
7. according to any described color three-dimensional printer of claim 1 to 5, it is characterised in that the feeding assembly includes depositing
The hopper and the extruder for consumptive material raw material to be extruded into wire consumptive material of consumptive material raw material are put, hopper is one-to-one with extruder to be connected,
Extruder is one-to-one with trunnion to be connected.
8. color three-dimensional printer according to claim 7, it is characterised in that set between the extruder and colour mixture component
Have a binder component, binder component includes the nip rolls being arranged in pairs, the wire consumptive material of extruder extrusion from paired nip rolls it
Between pass through after reach aimed dia.
9. according to any described color three-dimensional printer of claim 1 to 5, it is characterised in that the downstream of the colour mixture component
Side be provided with for by after colour mixture consumptive material output follower, follower include output seat, output driving wheel, output driven pulley and
Output motor, output motor drives output driving wheel, output driven pulley to be rotatably connected on output seat, exports driving wheel with output
Output gap is formed between driven pulley, output seat is provided with charging aperture and discharging opening, the feedstock direction of charging aperture, output gap with
The discharging direction of discharging opening is on the same line.
10. a kind of usage right requires the Method of printing of 1 to 9 any described color three-dimensional printer, it is characterised in that including
Following steps：
1) print parameters are set in controller；
2) consumptive material of different colours is added in each feeding assembly, controller controls each set feeding assembly according to print parameters respectively
Consumptive material is conveyed to colour mixture component with respective feed rate；
3) colour mixture component carries out colour mixture to consumptive material；
4) consumptive material after colour mixture is delivered to print platform；
5) controller controls print platform according to print parameters, and target item is printed by printing head；
6) while printing head is printed, controller controlled respectively according to print parameters it is each set feeding assembly with it is respective enter
Mixed colours to colour mixture component conveying consumptive material to speed.
11. Method of printings according to claim 10, it is characterised in that the controller is according to every kind of face on target item
Consumable quantity used by color calculates the volume that extrusion device exports each color consumptive material, and extrusion device exports the previous face of predetermined
Start the consumptive material that colour mixture exports latter color after the consumptive material of color.
12. Method of printings according to claim 11, it is characterised in that the controller is to extrusion device output consumptive material
Diameter and speed detect and record and obtain the flow that extrusion device exports consumptive material, and are entered with the flow of setting in print parameters
Row compares, and then the feed rate to feeding assembly is adjusted.
13. Method of printings according to claim 10, it is characterised in that the print platform is provided with auxiliary block, are squeezing
Go out device from previous colour switching into during latter color, printing head prints in auxiliary block consumptive material.
14. Method of printings according to claim 10, it is characterised in that the controller reduces extrusion in consumptive material pumpback
The consumptive material output speed of device, after pumpback terminates, the consumptive material output speed output consumptive material that extrusion device is maintained like, until extrusion
After device recovers normal to the consumptive material volume between printing head, extrusion device recovers original consumptive material output speed.
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| CN109228355A (en) * | 2018-09-27 | 2019-01-18 | 河南筑诚电子科技有限公司 | It is a kind of for detecting the device of 3D printing consumptive material diameter |
| CN110654027A (en) * | 2018-06-30 | 2020-01-07 | 沙特基础工业全球技术公司 | Color matching for additive manufacturing |
| CN110962336A (en) * | 2018-09-28 | 2020-04-07 | 深圳市人彩科技有限公司 | Push-pull mixing type extruder special for three-dimensional color printer |
| CN111284001A (en) * | 2018-12-07 | 2020-06-16 | 罗天珍 | Dedicated colour mixture extruder of three-dimensional inkjet printer |
| CN111300813A (en) * | 2018-11-25 | 2020-06-19 | 罗天珍 | Special contrary formula extruder that ends of three-dimensional inkjet printer |
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| CN106738876B (en) | 2019-06-14 |
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Denomination of invention: Color 3D printer and its printing method Effective date of registration: 20231025 Granted publication date: 20190614 Pledgee: Zhejiang Deqing Rural Commercial Bank Co.,Ltd. science and technology sub branch Pledgor: Magic core (Huzhou) Technology Co.,Ltd. Registration number: Y2023980062536 |
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