CN106738876B - 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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- CN106738876B CN106738876B CN201611138838.2A CN201611138838A CN106738876B CN 106738876 B CN106738876 B CN 106738876B CN 201611138838 A CN201611138838 A CN 201611138838A CN 106738876 B CN106738876 B CN 106738876B
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- consumptive material
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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
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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
- 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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Abstract
The invention discloses a kind of color three-dimensional printers, belong to three-dimensional printer field, solves the problems, such as trunnion reflux blocking in the prior art, the technical solution for solving the problems, such as this mainly includes controller, extrusion device and print platform, controller controls extrusion device and print platform work, print platform is equipped with printing head, extrusion device is connected to 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 to colour mixture component, feeding assembly is equipped with more sets, colour mixture component includes a hot melt chamber and Duo Gen trunnion, trunnion and feeding assembly correspond, feeding assembly send consumptive material to trunnion, the downstream of trunnion is connected to hot melt chamber, be equipped with the non-return piece for trunnion being closed after following consumptive material to move in consumptive material reflux in the pore of trunnion.Present invention is mainly used for color three dimension printings.The present invention also provides a kind of Method of printings of above-mentioned color three-dimensional printer.
Description
Technical field
The present invention relates to three-dimensional printer, especially a kind of color three-dimensional printer and its Method of printing.
Background technique
For three-dimensional printing technology using extensively, commonplace is the printer using fusion sediment technology now.It is existing
The three-dimensional printer of fusion technology is used to be melted simultaneously as material and mostly by single nozzle to plastics using prefabricated plastic cord
It squeezes out, completes the molding of workpiece, under normal circumstances, a kind of material or a kind of color can only be used for single model.
To the Single-issue of print colors or material, there are also improvement projects for existing three-dimensional printer.
The first improvement project is fixed in three-dimensional printer movable platform using multiple hot ends, defeated using a variety of wire rods
Enter to realizing multi-color printing, since multiple hot ends are fixed on parallel in three-dimensional printer movable platform, there are distance between nozzle,
This distance needs accurate measurement and is corrected in software, otherwise can bring colour superimposition when multi-color printing.More
It is multiple to be mounted on conplane spray head due to installation error in nozzle system, there is not probability in the spray head of work and prints
Model generation scratch, may damage model and spray head when serious.In three-dimensional printer in use, not inside the spray head of work
The spill and leakage of plastics, contamination model may be brought there are still the plastics of thawing.Importantly, this scheme can not achieve very
Color three dimension printing in positive meaning.The color of printing is still limited by the wire color of input.
Second of improvement project is directly inputted in spray head using a variety of consumptive materials and is finally used using the hot end of customization
One spray head squeezes out, and realizes the colour mixture of a variety of different consumptive materials.This programme must be inserted into the consumption of three kinds of colors simultaneously when in use
Otherwise material can cause to block at trunnion due to melting the reflux of consumptive material.Due to the three-dimensional printer using fusion sediment technology
In order to avoid the spill and leakage contamination model of consumptive material in normal work, need spray head not extruded material when pumpback is carried out to consumptive material, should
Operation can be executed largely in the molding of a model, however since the customization hot end of this programme possesses complicated geometric form
Shape increases resistance, to will increase required extrusion dynamics and weaken the validity of consumptive material high speed pumpback, is easy to cause
Consumptive material residual, weaken pumpback originally can bring beneficial effect, while design in use, pumpback setting it is improper easily bring it is stifled
Plug.When in addition carrying out colour mixture in nozzle, since colour mixture chamber is small, being easy to appear colour mixture unevenly causes the color squeezed out can not
Control, that is to say, that although colored effect can be exported, color can not be accurately controlled.Therefore, this programme is inconvenient for use, easily stifled
Plug, unstable, the uncontrollable drawback of color limit it and apply in production.
Summary of the invention
Present invention purpose to be achieved is just to provide a kind of color three-dimensional printer, and consumptive material excessive backward flow is avoided to lead to larynx
It is blocked at pipe.
In order to achieve the above object, it the present invention adopts the following technical scheme: color three-dimensional printer, including controller, squeezes
Device and print platform out, controller control extrusion device and print platform work, and print platform is equipped with printing head, squeeze out dress
It sets and is connected to printing head, extrusion device includes feeding assembly and colour mixture component, and feeding assembly is located at the upstream side of colour mixture component
And be connected to colour mixture component, feeding assembly is equipped with more sets, and colour mixture component includes a hot melt chamber and Duo Gen trunnion, trunnion and charging group
Part corresponds, and feeding assembly send consumptive material to trunnion, and the downstream of trunnion is connected to hot melt chamber, is equipped in the pore of trunnion
The non-return piece that consumptive material closes trunnion after following consumptive material to move when flowing back.
Further, the pore of the trunnion includes the first hole section and the second hole section being connected, the aperture of the first hole section
For D1 less than the aperture D2 of the second hole section, the first hole section is located at the upstream side of the second hole section, the connection of the first hole section and the second hole section
Place forms flaring, and non-return piece is set in the second hole section, and non-return piece follows consumptive material to move to flaring to match with flaring when consumptive material flows back
Close sealing.
Further, the non-return piece is sphere, is flared as part pyramid like configuration, and the diameter of sphere is D3, D3 be greater than D1 and
Less than D2.
Further, the locating part for preventing non-return piece from moving out the second hole section with consumptive material, limit are equipped in second hole section
Position part protrudes into the part in the second hole section and the hole wall of the second hole section forms communication port, 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 equipped with the threaded hole with screw fit.
Further, the feeding assembly includes rack for storing linear consumptive material and for by the line on rack
Shape consumptive material inputs the feed appliance of colour mixture component, feed appliance with trunnion is one-to-one is connected to.
Further, the feeding assembly includes storing the hopper of consumptive material raw material and for consumptive material raw material to be extruded into linear consumption
The extruder of material, hopper with extruder is one-to-one is connected to, extruder with trunnion is one-to-one is connected to.
Further, binder component is equipped between the extruder and colour mixture component, binder component includes being arranged in pairs
Nip rolls, the linear consumptive material that extruder squeezes out reach aimed dia after passing through between pairs of nip rolls.
Further, the downstream side of the colour mixture component is equipped with for exporting the follower of the consumptive material output after colour mixture
Device includes output seat, output driving wheel, output driven wheel and output motor, and output motor drives output driving wheel, exports driven
Wheel is rotatably connected on output seat, is exported and is formed output gap between driving wheel and output driven wheel, and output seat is equipped with charging
Mouthful and discharge port, the discharging direction of the feedstock direction of feed inlet, output gap and discharge port is on the same line.
After adopting the above technical scheme, the present invention has the advantage that non-return piece can be with consumptive material in the pore of trunnion
It flows and moves, i.e., there is stroke in the pore of trunnion, when consumptive material is flowed from upstream toward downstream, will drive non-return piece in larynx
To downstream movement in the pore of pipe, so that trunnion be opened, allow consumptive material can be with proper flow, when consumptive material reflux, in trunnion
Consumptive material upstream flows back from downstream, will drive non-return piece in the pore of trunnion to movements upstream, incites somebody to action after moving certain stroke
Trunnion is closed, and consumptive material excessive backward flow can not only be avoided to cause to block at trunnion, and because non-return piece will not flow back in consumptive material
When trunnion is closed at once, allow the upstream end of trunnion and downstream end pressure keep balancing in reflux course, Bu Huiyin
For the reflux of trunnion upstream, colour mixture component, which is continued to output, causes trunnion downstream to form negative pressure, is conducive to make non-return piece that trunnion is reliable
It closes, while after restarting fair current, and is conducive to non-return piece and moves in time quickly open trunnion.
The present invention also provides a kind of Method of printings using any of the above-described color three-dimensional printer, comprising 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 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, prints target item by printing head；
6) while printing head is printed, controller controls each set feeding assembly respectively according to print parameters with respective
Feed rate to colour mixture component conveying consumptive material mix colours.
Further, controller consumable quantity according to used in each color on target item calculates extrusion device output
The volume of each color consumptive material, extrusion device, which exports, to be started colour mixture after the consumptive material of the previous color of predetermined volume and exports latter color
Consumptive material.
Further, the controller carries out detection record to the diameter and rate of extrusion device output consumptive material and is squeezed
The flow of device output consumptive material out, and be compared with the flow set in print parameters, then to the feeding speed of feeding assembly
Rate is adjusted.
Further, the print platform is equipped with auxiliary block, in extrusion device from previous colour switching at latter color
During, printing head prints to consumptive material in auxiliary block.
Further, the controller reduces the consumptive material output speed of extrusion device in consumptive material pumpback, after pumpback,
The consumptive material output speed that extrusion device maintains like exports consumptive material, until extrusion device is extensive to the consumptive material volume between printing head
After answering normally, extrusion device restores original consumptive material output speed.
After adopting the above technical scheme, the present invention has the advantage that since trunnion can be closed in reflux by non-return piece
It closes, therefore the pumpback of printing head can be cooperated to reduce the feed rate of extrusion device, so that extrusion device and printing head
Between consumptive material volume big variation will not occur, be also beneficial to stop the fast normal print job of quick-recovery after pumpback, thus
Improve printing effect and print quality.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the schematic diagram of internal structure of extrusion device in the embodiment of the present invention one；
Fig. 3 is the schematic diagram of internal structure (axis survey) of extrusion device in the embodiment of the present invention one；
Fig. 4 is the decomposition diagram 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 printers, as shown in Figure 1, including controller K, extrusion device J and beating
Platform P is printed, controller K controls extrusion device J and print platform P work, and print platform P is equipped with printing head P1, extrusion device J
It is connected to 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 be connected to colour mixture component, feeding assembly is equipped with more sets, and colour mixture component includes a hot melt chamber and Duo Gen trunnion, trunnion and charging group
Part corresponds, and feeding assembly send consumptive material to trunnion, and the downstream of trunnion is connected to hot melt chamber, is equipped in the pore of trunnion
The non-return piece that consumptive material can close trunnion after following consumptive material to move when flowing back.
It makes an explanation first, the description such as signified upstream, downstream in the present invention, the stream of consumptive material when being referring to printer printing
Dynamic direction is come what is defined, and consumptive material is printed from the print platform that feeding assembly flow to three-dimensional printer, therefore feeding assembly
It may be considered starting point, and the spray head of print platform may be considered terminal.Non-return piece can be with consumptive material in the pore of trunnion
It flows and moves, i.e., there is stroke in the pore of trunnion, when consumptive material is flowed from upstream toward downstream, will drive non-return piece in larynx
To downstream movement in the pore of pipe, so that trunnion be opened, allow consumptive material can be with proper flow, when consumptive material reflux, in trunnion
Consumptive material upstream flows back from downstream, will drive non-return piece in the pore of trunnion to movements upstream, incites somebody to action after moving certain stroke
Trunnion is closed, and consumptive material excessive backward flow can not only be avoided to cause to block at trunnion, and because non-return piece will not flow back in consumptive material
When trunnion is closed at once, allow the upstream end of trunnion and downstream end pressure keep balancing in reflux course, Bu Huiyin
For the reflux of trunnion upstream, heating chamber and continuing to output causes trunnion downstream to form negative pressure, is conducive to that non-return piece is allowed reliably to close trunnion
It closes, while after restarting fair current, and is conducive to non-return piece and moves in time quickly open trunnion.Non-return piece closes trunnion
It closes, the consumptive material of fusing stays in upstream end (cold end) of the region of heating without flowing into trunnion, so that trunnion be avoided to block.Due to mixed
Color process carries 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 shell 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 layers of setting, and every layer each two sets, include thus a shelf 11 and a bottom plate 12 in shell 1, shelf 11 is used to installation position
Two sets of feeding assemblies and binder component in upper layer, in addition two sets of feeding assemblies and binder component are fixed on the bottom plate 12 of shell 1
On.In order to increase the intensity of shell 1, frame can be increased, frame is made of plurality of rods body 13, then by plate body 14, shelf 11
Formation shell 1 on the body of rod 13 is installed to a bottom plate 12.
It is seen in conjunction with Fig. 3 and Fig. 4, feeding assembly includes storing the hopper 2 of consumptive material raw material and for consumptive material raw material to be extruded into line
The extruder of shape consumptive material 9, hopper 2 with extruder is one-to-one is connected to, extruder with trunnion 41 is one-to-one is connected to.After hopper 2,
It can be using the consumptive material raw material of lower-cost graininess or other non-linear shape.In order to avoid equipment idle running, can be set in hopper 2
There is the detector for detecting consumptive material raw material, sends signals to mention by detector when the consumptive material raw material in hopper 2 will be exhausted
The user that wakes up adds consumptive material raw material.Consumptive material raw material can be from colored raw material, can also pass through charging group by mixing toner
The consumptive material of color of object is obtained after part mixed processing.
And in order to which linear consumptive material 9 is made in granular consumptive material raw material, extruder is needed to realize.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 to by feed pipe 201 with packing cylinder 21, will
Consumptive material raw material is sent into packing cylinder 21, in order to feed conveniently, the upstream end connection charging groove body 23 of packing cylinder 21, charging groove body 23
Feed opening 231 is arranged in top, and feed pipe 201 is connect with feed opening 231, and charging groove body 23 is fixed on shell by charging support 24
On 1.Driving motor 25 is set on shell 1 to drive extrusion screw rod 22, extrusion screw rod 22 passes through charging groove body 23 and charging branch
Frame 24 and driving motor 25 are sequentially connected, and the consumptive material due to can be two kinds, three kinds or four kinds colors when colour mixture carries out colour mixture, because
The charging movement of this different feeds component can be unrelated, therefore each extrusion screw rod 22 is designed with a driving motor 25
It drives, driving motor 25 can use servo motor.Transmission connection mode between driving motor 25 and extrusion screw rod 22 can be with
Using gear drive, driving gear 251 is set on the motor shaft of driving motor 25, driven gear is set on extrusion screw rod 22
221, driving gear 251 engages to realize transmission with driven gear 221.Furthermore belt belt wheel transmission or chain chain can also be used
Wheel transmission etc. the common kind of drive.Extruder further includes the heater 26 that heating fusing is carried out to the consumptive material of extrusion, heating
Device 26 is located at the downstream of packing cylinder 21, and heater 26 is connect by the first thermal insulator 27 with heated holder 28, heated holder 28
It is fixed on shell 1, heater 26 is equipped with extrusion nozzle 29, heats the consumptive material melted from extrusion nozzle 29 by heater 26
It is extruded into linear consumptive material 9.The outside of extrusion nozzle 29 is equipped with the first cooling fin 291, promotes consumptive material heat dissipation, consumptive material is avoided to squeeze out
It is sagging afterwards.Since the heat dissipation effect of the first cooling fin 291 is limited, linear consumptive material 9 still may be affected by gravity after squeezing out and under
It hangs down, therefore is provided with 20 pairs of the first cooling fan linear consumptive materials 9 on shell 1 and carries out cooling solid, but linear consumptive material 9 is still
Form in flexible relative can carry out moulding processing.
In order to allow linear consumptive material 9 diameter can satisfy trunnion 41 pore internal diameter requirement, extruder and colour mixture component
Between be equipped with binder component, binder component includes the nip rolls 31 being arranged in pairs, and the linear consumptive material 9 that extruder squeezes out is from pairs of
Reach aimed dia after passing through between nip rolls 31.Nip rolls 31 is passive guide roller, and linear consumptive material 9 will drive pressure when downstream moving
Expect that roller 31 rotates.Nip rolls 31 is mounted in press holder 32, and press holder 32 is mounted on shell 1.Aimed dia can root
It is configured according to needs.
Due to colour mixture component only have it is a set of, and in order to which more linear consumptive materials 9 are input in colour mixture component, binder component
Downstream is equipped with passage 33, and linear consumptive material 9 enters passage 33, the downstream of passage 33 and trunnion 41 after passing through binder component
It connects.When consumptive material uses plastics, passage 33 can use teflon pipe, and teflon pipe can have specific shape, by more
Linear consumptive material 9 is directed in colour mixture component.
Colour mixture component includes that a hot melt chamber 4 and four trunnions 41, every trunnion 41 are correspondingly connected with a passage 33, this reality
It applies and four trunnions 41 is set altogether in example, the downstream of trunnion 41 be connected to hot melt chamber 4, and hot melt chamber 4 can be with biggish space
Four linear consumptive materials 9 are melted and admixed together again.The downstream of trunnion 41 is protruded into hot melt chamber 4, therefore is heated chamber 4 and existed
Trunnion 41 can also be heated in heating process, therefore the consumptive material entered in trunnion 41 can first carry out preheating fusing.
In conjunction with Fig. 5, the pore of trunnion 41 includes the first hole section 411 and the second hole section 412 being connected, the first hole section 411
Aperture D1 less than the aperture D2 of 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 hole section 412 junction formed flaring 413, non-return piece 42 be set to the second hole section 412 in, non-return piece 42 is in consumptive material
It follows consumptive material to move to flaring 413 when reflux to seal with 413 cooperation of flaring.In the present embodiment, non-return piece 42 is sphere, flaring
413 be part pyramid like configuration, and the diameter of sphere is D3, and D3 is greater than D1 and is less than D2.In addition, non-return piece 42 can also use hitching post,
Part pyramid like configuration is arranged in the upstream end of hitching post, realizes sealing to cooperate with flaring 413.In addition to part pyramid like configuration, can also adopt
It is sealed with the realizations such as planar structure or arc surface structure.
Due to non-return piece 42 can the free movement in the second hole section 412, non-return piece 42 is moved out with consumptive material in order to prevent
Second hole section 412, the second hole section 412 is interior equipped with locating part 43, in order to avoid locating part 43 influences the flowing of consumptive material, locating part 43
The hole wall for protruding into the 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 two hole sections, 412 cross-sectional area.Locating part 43 can use screw, and trunnion 41 is equipped with threaded hole with screw fit, can be with
Position by adjusting locating part 43 is adjusted the cross-sectional area of communication port, realizes the control of consumptive material flow velocity.Except of course that
Screw, locating part 43 can also be divided into two part processing using parts such as pin or retaining rings, or in the second hole section 412
On the basis of, locating part 43 is also possible to the molding convex ribs directly in the second hole section 412.
Fig. 3 is returned to, colour mixture component further includes hot melt bracket 44, and hot melt bracket 44 is fixed on shell 1, heats on bracket 44
It equipped with the second thermal insulator 45, heats chamber 4 and is fixed in the second thermal insulator 45, trunnion 41 is arranged across the second thermal insulator 45, hot melt
The downstream of chamber 4 is equipped with the second nozzle 46 of the consumptive material output after colour mixture.The outside of second nozzle 46 can be set second and dissipate
Backing 461.
Initial feed pressure has been unable to meet the demand of consumptive material high speed discharging after colour mixture, therefore second nozzle 46 is squeezed out and mixed
Linear consumptive material 9 after color, is exported by follower.Follower is located at the downstream side of colour mixture component, defeated in conjunction with shown in Fig. 3 and Fig. 6
Device includes output seat 51, output driving wheel 52, output driven wheel 53 and output motor 5 out, and the output shaft of output motor 5 passes through defeated
Seat 51 out, 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 wheel 53 is rotatably connected on output seat 51, is exported and is formed outlet chamber between driving wheel 52 and output driven wheel 53
Gap, output seat 51 are equipped with feed inlet 501 and discharge port 502, feedstock direction, output gap and the discharge port 502 of feed inlet 501
Discharging direction on the same line.Exporting seat 51 includes matrix 511 and lid 512, and matrix 511 is equipped with accommodating output driving wheel
52, the accommodation groove 503 of driven wheel 53 is exported, lid 512 covers accommodation groove 503.Gear can be used by exporting driving wheel 52, revolved
Axial tension can be generated to linear consumptive material 9 when turning, linear consumptive material 9 is exported.Output motor 5 is fixed on shell 1, exports seat
51 are fixed on output motor 5, and output motor 5 can use servo motor.For the linear consumptive material 9 squeezed out to second nozzle 46
Fast cooling is carried out, the second cooling fan 54 can be set on lid 512, be provided with ventilation hole 504 on lid 512, simultaneously
Heat release hole 505 is set in the side of accommodation groove 503, the cooling air-flow that the rotation of the second cooling fan 54 generates is successively from ventilation hole
504, accommodation groove 503 and heat release hole 505 pass through, and realize the fast cooling of consumptive material, the second cooling fan 54 can also use air draught
Mode, cooling air-flow are then flowed successively through from heat release hole 505, accommodation groove 503 and through-hole hole.Second cooling fan 54 also can be set
Between second nozzle 46 and output seat 51.Pneumatic joint can be set on discharge port 502, facilitate the pipe of connection conveying consumptive material
Road.Sensor can be set in discharge port 502, for detecting the diameter of linear consumptive material 9 and the data read being passed to printer
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 plastic grain is also more much lower than the price of plastic cord.Furthermore other, which also can be used, has class with plastics
Like the material of performance.
Embodiment two:
In addition to storing consumptive material raw material using hopper 2, linear consumptive material 9 also can be directly used and carry out colour mixture, therefore such as Fig. 7 institute
Show, the feeding assembly in the present embodiment includes rack 6 for storing linear consumptive material 9 and for consuming the threadiness on rack
Material 9 inputs the feed appliance E of colour mixture component, and linear consumptive material 9 is generally placed on rack in rolls, and bar is placed in setting on rack thus
61,62 sets of coiler on placing bar 61 and the rotation in feeding, feed appliance with trunnion 41 is one-to-one is connected to.Feed appliance and implementation
Follower in example one is similar, including material feeding seat 71, feeding driving wheel, feeding driven wheel and feeding motor 7, feeding motor 7
Output shaft passes through material feeding seat, and feeding driving wheel can be directly installed on the output shaft of feeding motor 7, and the drive of feeding motor 7 is sent
Expect that driving wheel, feeding driven wheel are rotatably connected on material feeding seat, form feeding gap between feeding driving wheel and feeding driven wheel,
Stock support 71 is equipped with feeding inlet and feeding port, and the discharging direction of the feedstock direction of feeding inlet, feeding gap and feeding port exists
On same straight line.Due to directlying adopt linear consumptive material 9, feeding port can be directly connected to hot melt chamber 4.
In above-described embodiment, feeding assembly is arranged four sets, can according to need the number of increase and decrease feeding assembly in actual product
Amount, and can need to select the tricks of feeding assembly specific works according to colour mixture.Since different feeding assemblies can be single
Solely control, therefore the feed speed that can control the consumptive material of different colours mixes different color of objects, according to different ratios
Example, which can mix, obtains nearly all color.
Embodiment three:
The present invention also provides a kind of Method of printings using the color three-dimensional printer in above-described embodiment, including following step
It is rapid:
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 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, prints target item by printing head；
6) while printing head is printed, controller controls each set feeding assembly respectively according to print parameters with respective
Feed rate to colour mixture component conveying consumptive material mix colours.
Print parameters are set, refers to the threedimensional model design for carrying out target item by computer, generates and have 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.
Software can be used, the color data of target item is individually handled to generation colour mixture file to control extrusion device work, including is every
Plant the parameters such as the page order of color, the volume of required consumptive material.All Files are stored in controller.
In the present invention, the instruction that colour mixture file provides will be corresponded with each axis movement instruction of print platform, by one
A controller is uniformly controlled.Print platform and extrusion device are controlled using the same controller, this is consumed for squeezing out
The rate control of material is advantageous, it is possible to prevente effectively from there are the time difference or the appearance of a certain controller because different controllers send order
Problem and another controller are still the problem of work causes, and user the equal energy of operations such as suspends, cancels in print procedure
It timely responds to, it is unaffected.
In specific print procedure, controller consumable quantity according to used in 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 volume
The consumptive material of color.Since extrusion device is to there is certain distance between printing head, the consumptive material that printing head prints is wanted
Colour mixture squeezes out 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, the two are consistent the precise Printing that different colours can be realized.
In the present embodiment, controller carries out detection record to the diameter and rate of extrusion device output consumptive material and is squeezed out
Device exports the flow of consumptive material, and is compared with the flow set 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 can be carried out in time by the comparison of flow
Adjustment, so that the volume that consumptive material squeezes out is more accurate.Meanwhile in print procedure, the printing rate of printing head is constantly to become
Change, the rate that extrusion device squeezes out consumptive material also constantly changes.Therefore the diameter of consumptive material is exported to extrusion device by controller
Detection record is carried out with rate, control adjustment can be fed back, so that extrusion device exports actual rate of extrusion when consumptive material
It can match with print parameters.
Since the transformation of different colours needs certain time to carry out colour mixture, auxiliary block is equipped on print platform,
Extrusion device from previous colour switching at latter color during, printing head prints to consumptive material in auxiliary block, avoid by
On unwanted color print to 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 squeezed out after colour mixture at this time can become smaller, but due to pumping-back, extrusion device to the consumption between printing head
Material volume is slightly increased, therefore after pumpback, and the consumptive material output speed that extrusion device maintains like exports consumptive material, until squeezing out
After device restores normal to the consumptive material volume between printing head, extrusion device restores original consumptive material output speed, in reality
In operation, this process is very fast, because consumptive material volume change is little, the fast speed restored is conducive to improve
Printing effect and print quality.Since the plastic filament formed after colour mixture has certain flexibility, three-dimensional beat will not influence
The normal pumpback of print machine.
In addition, can be controlled when controller judges that the consumptive material raw material in hopper will exhaust by the detector being arranged in hopper
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 to print.
In addition to above preferred embodiment, there are other embodiments of the invention, and those skilled in the art can be according to this
Invention makes various changes and modifications, and as long as it does not depart from the spirit of the invention, should belong in claims of the present invention and determines
The range of justice.
Claims (14)
1. color three-dimensional printer, including controller, extrusion device and print platform, controller controls extrusion device and printing is flat
Platform work, print platform are equipped with printing head, and extrusion device is connected to printing head, which is characterized in that the extrusion device packet
Feeding assembly and colour mixture component are included, feeding assembly is located at the upstream side of colour mixture component and is connected to colour mixture component, and feeding assembly is set
There are more sets, colour mixture component includes a hot melt chamber and Duo Gen trunnion, and trunnion and feeding assembly correspond, and feeding assembly send consumptive material
To trunnion, the downstream of trunnion is connected to hot melt chamber, is equipped in the pore of trunnion and is followed consumptive material in trunnion in consumptive material reflux
To movements upstream and the non-return piece of closing trunnion after moving certain stroke in pore.
2. color three-dimensional printer according to claim 1, which is characterized in that the pore of the trunnion includes being connected
First hole section and the second hole section, less than the aperture D2 of the second hole section, the first hole section is located at the second hole section by the aperture D1 of the first hole section
Upstream side, the junction of the first hole section and the second hole section, which is formed, to be flared, and non-return piece is set in the second hole section, and non-return piece is in consumptive material
Consumptive material is followed to move to flaring and flaring cooperation sealing when reflux.
3. color three-dimensional printer according to claim 2, which is characterized in that the non-return piece is sphere, is flared as circle
Cone structure, the diameter of sphere are D3, and D3 is greater than D1 and is less than D2.
4. color three-dimensional printer according to claim 2, which is characterized in that non-return equipped with preventing in second hole section
Part moves out the locating part of the second hole section with consumptive material, and the part that locating part protrudes into the second hole section and the hole wall of the second hole section are formed
Communication port, the cross-sectional area of communication port are not less than the 1/3 of the second hole section cross-sectional area.
5. color three-dimensional printer according to claim 4, which is characterized in that the locating part is screw, and trunnion is equipped with
With the threaded hole of screw fit.
6. color three-dimensional printer according to any one of claims 1 to 5, which is characterized in that the feeding assembly includes using
In the rack for storing linear consumptive material and for by the feed appliance of the linear consumptive material input colour mixture component on rack, feed appliance with
The one-to-one connection of trunnion.
7. color three-dimensional printer according to any one of claims 1 to 5, which is characterized in that the feeding assembly includes depositing
Put the hopper of consumptive material raw material and the extruder for consumptive material raw material to be extruded into linear consumptive material, hopper with extruder is one-to-one is connected to,
Extruder with trunnion is one-to-one is connected to.
8. color three-dimensional printer according to claim 7, which is characterized 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 linear consumptive material that extruder squeezes out from pairs of nip rolls it
Between pass through after reach aimed dia.
9. color three-dimensional printer according to any one of claims 1 to 5, which is characterized in that the downstream of the colour mixture component
Side be equipped with for by after colour mixture consumptive material output follower, follower include output seat, output driving wheel, output driven wheel and
Output motor, output motor drive output driving wheel, and output driven wheel is rotatably connected on output seat, output driving wheel and output
Form output gap between driven wheel, output seat is equipped with inlet port and outlet port, the feedstock direction of feed inlet, output gap with
The discharging direction of discharge port is on the same line.
10. a kind of Method of printing using any color three-dimensional printer of claim 1 to 9, which is characterized 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, prints target item by printing head；
6) while printing head is printed, controller controlled respectively according to print parameters each set feeding assembly with it is respective into
It mixes colours to rate to colour mixture component conveying consumptive material.
11. Method of printing according to claim 10, which is characterized in that the controller is according to every kind of face on target item
Consumable quantity used in color calculates the volume of extrusion device output each color consumptive material, and extrusion device exports the previous face of predetermined volume
Start the consumptive material that colour mixture exports latter color after the consumptive material of color.
12. Method of printing according to claim 11, which is characterized in that the controller is to extrusion device output consumptive material
Diameter and rate carry out detection record and obtain the flow of extrusion device output consumptive material, and with the flow that is set in print parameters into
Row compares, and is then adjusted to the feed rate of feeding assembly.
13. Method of printing according to claim 10, which is characterized in that the print platform is equipped with auxiliary block, is squeezing
Out device from previous colour switching at latter color during, printing head prints to consumptive material in auxiliary block.
14. Method of printing according to claim 10, which is characterized in that the controller reduces extrusion in consumptive material pumpback
The consumptive material output speed of device, after pumpback, the consumptive material output speed that extrusion device maintains like exports consumptive material, until squeezing out
After device restores normal to the consumptive material volume between printing head, extrusion device restores original consumptive material output speed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107297900A (en) * | 2017-08-17 | 2017-10-27 | 佛山市南海区广工大数控装备协同创新研究院 | A kind of anti-plane material three-dimensional printer of colour mixture |
| EP3587072A1 (en) * | 2018-06-30 | 2020-01-01 | SABIC Global Technologies B.V. | Color matching for additive manufacturing |
| CN109228355B (en) * | 2018-09-27 | 2024-04-16 | 河南筑诚电子科技有限公司 | Device for detecting diameter of 3D printing consumable |
| 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 |
| CN111300813A (en) * | 2018-11-25 | 2020-06-19 | 罗天珍 | Special contrary formula extruder that ends of three-dimensional inkjet printer |
| CN111284001A (en) * | 2018-12-07 | 2020-06-16 | 罗天珍 | Dedicated colour mixture extruder of three-dimensional inkjet printer |
| CN112757622A (en) * | 2019-11-01 | 2021-05-07 | 共享智能铸造产业创新中心有限公司 | FDM color printer |
| WO2024243753A1 (en) * | 2023-05-26 | 2024-12-05 | 深圳市创想三维科技股份有限公司 | 3d printing control method, electronic device and computer-readable storage medium |
| CN119058090B (en) * | 2024-09-24 | 2025-04-15 | 北京中康增材科技有限公司 | A 3D printing device with automatic demoulding function |
| CN119116359B (en) * | 2024-09-24 | 2025-07-18 | 芜湖市爱三迪电子科技有限公司 | A color mixing 3D printer capable of controlling the mixing ratio and a color mixing control method |
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| CN202412587U (en) * | 2011-12-29 | 2012-09-05 | 浙江申达机器制造股份有限公司 | One-way check type nozzle structure |
| CN203449610U (en) * | 2013-09-09 | 2014-02-26 | 南京信息工程大学 | Three-dimensional (3D) printer capable of recycling printing base material |
| CN204566689U (en) * | 2015-01-22 | 2015-08-19 | 上海智位机器人有限公司 | A kind of single spraying head multi-color printing mechanism and single spraying head polychrome 3D printer |
| CN104786500A (en) * | 2015-04-16 | 2015-07-22 | 南京彩云机械电子制造集团有限公司 | Colour 3D printing spraying mechanism |
| CN105881907A (en) * | 2016-05-10 | 2016-08-24 | 深圳达能美科技有限公司 | Multi-color printing mechanism of 3D printer |
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Effective date of registration: 20210825 Address after: 313200 No. 270, phase 1, No. 926, Changhong East Street, Fuxi street, Deqing County, Huzhou City, Zhejiang Province (Moganshan national high tech Zone) (self declaration) Patentee after: Magic core (Huzhou) Technology Co.,Ltd. Address before: 325000 901, building 8, Huanglong Kangyuan, Lucheng District, Wenzhou City, Zhejiang Province Patentee before: Chen Tianrun |
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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 |