CN107030851A - Extruded type ceramic product 3D printing device and method - Google Patents
Extruded type ceramic product 3D printing device and method Download PDFInfo
- Publication number
- CN107030851A CN107030851A CN201710280716.5A CN201710280716A CN107030851A CN 107030851 A CN107030851 A CN 107030851A CN 201710280716 A CN201710280716 A CN 201710280716A CN 107030851 A CN107030851 A CN 107030851A
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- extruder head
- slurry
- feed bin
- extrusion
- extruded type
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- 239000000919 ceramic Substances 0.000 title claims abstract description 65
- 238000010146 3D printing Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000033001 locomotion Effects 0.000 claims abstract description 72
- 238000001125 extrusion Methods 0.000 claims abstract description 40
- 230000003028 elevating effect Effects 0.000 claims abstract description 29
- 238000010079 rubber tapping Methods 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 230000005855 radiation Effects 0.000 claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 43
- 239000000843 powder Substances 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 16
- 239000003431 cross linking reagent Substances 0.000 claims description 13
- 229920001558 organosilicon polymer Polymers 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 9
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000005995 Aluminium silicate Substances 0.000 claims description 7
- 235000012211 aluminium silicate Nutrition 0.000 claims description 7
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 239000003112 inhibitor Substances 0.000 claims description 5
- 229910052573 porcelain Inorganic materials 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- -1 Alkenyl siloxane Chemical class 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 239000004590 silicone sealant Substances 0.000 description 4
- 238000001723 curing Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- JQZGUQIEPRIDMR-UHFFFAOYSA-N 3-methylbut-1-yn-1-ol Chemical compound CC(C)C#CO JQZGUQIEPRIDMR-UHFFFAOYSA-N 0.000 description 1
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001843 polymethylhydrosiloxane Polymers 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
Abstract
A kind of extruded type ceramic product 3D printing device and method, including foundation frame, foundation frame Shang You three-axis movings mechanism and extrusion mechanism, three-axis moving mechanism include moving forward and backward mechanism, horicontal motion mechanism and elevating movement mechanism；Extrusion mechanism is arranged on below elevating movement mechanism；Extrusion mechanism includes feed bin, extruder head and conveying pipeline, and conveying pipeline is arranged on the periphery of extruder head, and is connected with the feed bin being arranged on inside extruder head；Bin bottom inside extruder head is provided with tapping channel, the plug that tapping channel bottom is set equipped with activity；The bottom periphery of extruder head is set with the heating radiation source of annular.This printing equipment and method, simple in construction, accurate positioning, controllability are strong, deform small after product sintering, and input cost is low, good product quality, high in machining efficiency.
Description
Technical field
The method that ceramic 3D printing is carried out the present invention relates to a kind of 3D printing equipment of ceramics and using the equipment, it is special
It is not the 3D printing device and method of a kind of high-compactness, high-precision ceramics or ceramic part.
Background technology
At present, squeezed more than the ceramic 3D printing of slurry extrusion way using the simple magazine feed of major diameter or material pump feed
Go out pressure smaller, cause extrusion cavities to be relatively large in diameter and instability of flow, cause ceramic batch precision relatively low.Conventional ceramic slurry into
Point, deformed after sintering larger.Conventional thermoplastic's binding agent has higher convenience, but ceramic post sintering process when blank is molded
In, thermoplastic softening is easily caused blank deformation, and air exercise impression shape, size have more limitation.And the ceramic 3D printing of photocuring
Higher precision can be realized, but equipment cost is obviously improved, and slurry liquid phase ingredient is higher, and contain more macromolecule light
Curing groups, can not turn into ceramic active ingredient after sintering, so as to influence the consistency of ceramic part, influence job schedule and
Product quality.
The content of the invention
The present invention be directed to the technological deficiency referred in background technology, one is to provide a kind of extruded type ceramic product 3D printing
Device；Two are to provide a kind of method that ceramic product 3D printing is carried out using said apparatus.
The technical solution adopted in the present invention is：A kind of extruded type ceramic product 3D printing device, including by support and bottom
Three-axis moving mechanism and extrusion mechanism are provided with the foundation frame that seat is constituted, foundation frame,
The three-axis moving mechanism includes being arranged on two stands moving forward and backward mechanism, the horizontal movement being crossed on two stands
Mechanism and the elevating movement mechanism being hung on horicontal motion mechanism；In described three-axis moving mechanism, including walking beam and
It is connected thereto the motion motor of control；
The extrusion mechanism is arranged on below elevating movement mechanism；Extrusion mechanism includes feed bin, extruder head and conveying pipeline, conveying
Pipe is arranged on the periphery of extruder head, and is connected with the feed bin being arranged on inside extruder head；Bin bottom inside the extruder head
It is provided with tapping channel, the plug that tapping channel bottom is set equipped with activity；The bottom periphery of the extruder head is set with annular
Heating radiation source.
In described three-axis moving mechanism：
Moving forward and backward mechanism includes front and rear beam, moves forward and backward motor and move forward and backward limiting plate；Front and rear beam is arranged on support, preceding
The front end sleeve of the back rest is equipped with limiting plate is moved forward and backward, and the rear end of front and rear beam, which is provided with, moves forward and backward seat, and front and rear beam is with moving forward and backward
It is to be slidably matched between seat；
Horicontal motion mechanism includes horizontal beam, horizontal movement motor and horizontal movement limiting plate；Front and rear beam be crossed on it is described before
Afterwards above kinematic nest, one end of horizontal beam is provided with horizontal movement motor, and the both ends of horizontal beam are respectively installed with level fortune
Dynamic limiting plate, horizontal movement seat is arranged on horizontal beam, and is to be slidably matched between horizontal beam；
Elevating movement mechanism includes lift beam, elevating movement motor and transmission mechanism；Elevating movement motor and transmission mechanism are pacified
On horizontal movement seat；The transmission mechanism includes the worm and gear combination of at least two groups intermeshing transmissions, every group of worm gear
Input in worm combination matches an elevating movement motor respectively, and its output end is inserted into the feed bin in extruder head.
Feed bin inside extruder head is hollow cylindrical cavity body structure, and feed bin is connected with the conveying pipeline of periphery；Feed bin bottom surface
Side be provided with tapping channel.
Plug is provided with below tapping channel；Described plug is conical cylinder, and its miner diameter end is actively plugged in out
Expect the bottom of passage.
A seated is provided with below plug, the seated is fixedly connected with the lower surface of plug, is provided with the middle part of seated
One pole, the pole is vertically arranged with seated in same level, and the two ends of pole are inserted on extruder head inwall and its phase
In corresponding pivot slot；Two plugs are alternately swung up and down centered on pole.
In elevating movement mechanism, the lower end of lift beam is installed with a horizontally disposed opposed platforms, the opposed platforms
Thermal source is installed on bottom surface.
Around discharge opening, encirclement has circulating water pipeline, the circulating water respectively for the periphery in heating radiation source
There is insulation material layer between pipeline and heating radiation source.
The method for carrying out 3D printing using extruded type ceramic product 3D printing device is as follows：
A, preparation raw material：It is main component with organosilicon polymer and ceramic powder, wherein polymer and ceramic powder proportion is according to pottery
Porcelain slurry fluidity and viscosity requirement control, the two gross weight proportion is 30-60%, is configured to thermosetting high viscosity ceramics
Slurry；
B, slurry are delivered in feed bin by conveying pipeline, under two feed bin differential pressure actions, and the plug in tapping channel is freely lived around pole
It is dynamic, complete commutation extrusion slurry；
After c, slurry extrusion, successively it is piled on opposed platforms in part, extrusion with the three-axis moving of 3D printing device,
The thermal source on heating radiation source and opposed platforms on discharge opening is heated to slurry and part simultaneously, cold around extrusion cavities
But device cools for slurry；
After the completion of d, extrusion, it is cooled in room temperature, feeding oxygen-free environment and is sintered, part is completed.
The slurry includes silicone sealants, organosilicon cross-linking agent, catalyst, ceramic powder and tackifier, inhibitor,
For multicomponent high viscosity fluid slurry.
Binding agent and the low viscosity organosilicon polymer that crosslinking agent is thermally cross-linkable；
Tackifier are that the high-viscosity organosilicon polymer of heat cross-linking can occur with crosslinking agent；
Ceramic powder main component is the calcined kaolin containing active filler and inert filler.
Ceramic powder main component is the calcined kaolin containing active filler and inert filler, wherein active filler and inertia
The proportion of filler is 2-3.5%.
Sintering process is completed under nitrogen, ammonia or other reducing atmosphere environment.
Compared with prior art, this printing equipment disclosed in this invention and method, utilize organosilicon polymer and pottery
Porcelain powder is main component, thermosetting high viscosity ceramic slurry is configured to, in the ceramic 3D printing device with plunger extrusion device
On realize the shaping of blank, then by oxygen-free atmosphere high temperature sintering, the ceramic part model of 3D printing is made, it is simple in construction, it is fixed
Precisely, controllability is strong for position, deforms small after product sintering, and input cost is low, good product quality, high in machining efficiency.
Brief description of the drawings
Fig. 1 is process flow diagram of the invention.
Fig. 2 is overall structure diagram of the invention.
Fig. 3 is Fig. 1 top view.
Fig. 4 is the structural representation of extrusion mechanism in the present invention.
Fig. 5 is the structural representation of extruder head in the present invention.
Fig. 6 is the structural representation of plug in the present invention.
Fig. 7 is the structural representation of extruder head in the present invention.
In figure：Base 1, support 2 moves forward and backward motor 3, moves forward and backward limiting plate 4, horizontal beam 5, horizontal movement limiting plate
6, backboard 7, horizontal movement seat 8, extrusion mechanism 9, horizontal movement motor 10, opposed platforms 11, controller 12, lift beam 13 is preceding
The back rest 14, elevating movement motor 15, transmission mechanism 16, push rod 17, feed bin 18, conveying pipeline 19, heating radiation source 20, extruder head
21, tapping channel 22, plug 23, pivot slot 24, discharge opening 25, seated 26, pole 27 moves forward and backward seat 28, circulating water
Pipeline 29.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to accompanying drawing 1-7, this technical scheme disclosed in this invention is utilized based on organosilicon polymer and ceramic powder
Composition is wanted, thermosetting high viscosity ceramic slurry is configured to, base is realized on the ceramic 3D printing device with plunger extrusion device
The shaping of material, then by oxygen-free atmosphere high temperature sintering, the ceramic part model of 3D printing is made.Dress disclosed in the technical scheme
Put including base 1, support 2, move forward and backward motor 3, move forward and backward limiting plate 4, horizontal beam 5, horizontal movement limiting plate 6, backboard
7th, horizontal movement seat 8, extrusion mechanism 9, horizontal movement motor 10, opposed platforms 11, controller 12, lift beam 13, front and rear beam 14,
Elevating movement motor 15, transmission mechanism 16, push rod 17, feed bin 18, conveying pipeline 19, heating radiation source 20, extruder head 21, discharging are logical
Road 22, plug 23, pivot slot 24, discharge opening 25, seated 26, pole 27, move forward and backward seat 28.
Set on this extruded type ceramic product 3D printing device, including the foundation frame being made up of support and base, foundation frame
It is equipped with three-axis moving mechanism and extrusion mechanism.The backboard set in cross is arranged on behind whole base.
The three-axis moving mechanism includes being arranged on two stands moving forward and backward mechanism, the level being crossed on two stands
Motion and the elevating movement mechanism being hung on horicontal motion mechanism；In described three-axis moving mechanism, including activity
Beam and the motion motor for being connected thereto control.
In three-axis moving mechanism：
Moving forward and backward mechanism includes front and rear beam, moves forward and backward motor and move forward and backward limiting plate；Front and rear beam is arranged on support, preceding
The front end sleeve of the back rest is equipped with limiting plate is moved forward and backward, and the rear end of front and rear beam, which is provided with, moves forward and backward seat, and front and rear beam is with moving forward and backward
It is to be slidably matched between seat.
Horicontal motion mechanism includes horizontal beam, horizontal movement motor and horizontal movement limiting plate；Front and rear beam is crossed on described
Move forward and backward above seat, one end of horizontal beam is provided with horizontal movement motor, and the both ends of horizontal beam are respectively installed with water
Flat sports limiting plate, horizontal movement seat is arranged on horizontal beam, and is to be slidably matched between horizontal beam.
Move forward and backward mechanism and horicontal motion mechanism is mainly the whole extrusion mechanism of drive and realizes in plane level and front and rear
The motion in direction.Move forward and backward limiting plate and be arranged on the extreme position that extrusion mechanism is moved forward and backward, horizontal movement limiting plate is set
In the inner side for moving forward and backward seat.
Elevating movement mechanism includes lift beam, elevating movement motor and transmission mechanism；Elevating movement motor and transmission mechanism
It is installed on horizontal movement seat；The transmission mechanism includes the worm and gear combination of at least two groups intermeshing transmissions, every group
Input in worm and gear combination matches an elevating movement motor respectively, and its output end is inserted into the feed bin in extruder head
In.Extrusion mechanism is arranged on below elevating movement mechanism, and screw rod output end is inserted into the feed bin of extruder head, and in feed bin
Slurry extruded, elevating movement mechanism mainly downward pressure is provided for screw rod output end.In worm and gear combination
The output end of worm screw is inserted into feed bin and the compressional movement above and below doing, and constitutes plunger-type structure, each elevating movement motor
The moment of torsion passed out combined by worm and gear in gear and the deceleration of screw rod and covert, switch to the thrust to plunger, respectively
For feed bin pressure pressure.
The motor of each motion is connected controlled with the controller being arranged on base respectively.
Extrusion mechanism includes feed bin, extruder head and conveying pipeline, and conveying pipeline is arranged on the periphery of extruder head, and crowded with being arranged on
The feed bin connection for lifting one's head internal.Bin bottom inside extruder head is provided with tapping channel, and tapping channel bottom is set equipped with activity
The plug put.The bottom periphery of extruder head is set with the heating radiation source of annular.
Feed bin inside extruder head is hollow cylindrical cavity body structure, and feed bin is connected with the conveying pipeline of periphery；Feed bin bottom surface
Side be provided with tapping channel.In elevating movement mechanism, including at least two groups worm and gear combinations for being used to provide pressure.
Plug is provided with below tapping channel；Plug is conical cylinder, and its miner diameter end is actively plugged in tapping channel
Bottom.A seated is provided with below plug, the seated is fixedly connected with the lower surface of plug, and one is provided with the middle part of seated
Pole, the pole is vertically arranged with seated in same level, and the two ends of pole are inserted on extruder head inwall corresponding thereto
In the pivot slot answered；Two plugs are alternately swung up and down centered on pole.Two material are provided with the present embodiment, in extruder head
Storehouse, is also just provided with two matched plugs.Seated can be freely movable under two feed bin differential pressure actions, also can be by motor control
System, it is ensured that at any time a, plug closes another plug opening.
In elevating movement mechanism, the lower end of lift beam is installed with a horizontally disposed opposed platforms, the opposed platforms
Thermal source is installed on bottom surface.Around discharge opening, encirclement has circulating water pipeline 29 respectively for the periphery in heating radiation source, as
It is preferred that, there is insulation material layer between circulating water pipeline and heating radiation source.
Discharge head is detachable, and modular joint can be general with conventional FDM printers extruder head, and aperture is interchangeable, extrusion cavities week
Enclose spraying oleophobic coating.
The method for carrying out 3D printing using extruded type ceramic product 3D printing device is as follows：
A, preparation raw material：It is main component with organosilicon polymer and ceramic powder, wherein polymer and ceramic powder proportion is according to pottery
Porcelain slurry fluidity and viscosity requirement control, the two gross weight proportion is 30-60%, is configured to thermosetting high viscosity ceramics
Slurry.
B, slurry are delivered in feed bin by conveying pipeline, under two feed bin differential pressure actions, and the plug in tapping channel is free around pole
Activity, completes commutation extrusion slurry.
After c, slurry extrusion, part is successively piled on opposed platforms with the three-axis moving of 3D printing device, was extruded
The thermal source on heating radiation source and opposed platforms on Cheng Zhong, discharge opening is heated to slurry and part simultaneously, extrusion cavities week
The cooling device enclosed is slurry cooling, and the cooling device is recirculated cooling water, around discharge opening, the periphery point in heating radiation source
Bao Wei there is not circulating water pipeline, preferably, having insulation material layer between circulating water pipeline and heating radiation source.
After the completion of d, extrusion, it is cooled in room temperature, feeding oxygen-free environment and is sintered, part is completed.
Slurry includes silicone sealants, organosilicon cross-linking agent, catalyst, ceramic powder and tackifier, defoamer, suppression
Agent, is multicomponent high viscosity fluid slurry.The specific of above-mentioned additive be from product：Silicone sealants select poly- methyl second
Alkenyl siloxane, organosilicon cross-linking agent selects polymethyl hydrogen siloxane, Castor catalyst, calcined kaolin powder, active filler
Titanium valve is selected, tackifier select high viscosity Polymethyl methacrylate, and inhibitor selects methyl butynol；Above-mentioned additive
In, silicone sealants, organosilicon cross-linking agent, catalyst, ceramic powder and tackifier, defoamer, the addition successively of inhibitor
Ratio is（Parts by weight meter）：1-2:30-40:1.2:50-65:1-3:1-3:0.5-2.
Binding agent and the low viscosity organosilicon polymer that crosslinking agent is thermally cross-linkable；Tackifier are warm for that can occur with crosslinking agent
The high-viscosity organosilicon polymer of crosslinking；Ceramic powder main component is the calcined kaolin containing active filler and inert filler,
Wherein the proportion of active filler and inert filler is 2-3.5%.
Sintering process is completed under nitrogen, ammonia or other reducing atmosphere environment.
Blank before sintering can be according to surface accuracy demand, can be in the mixed of the binding agent, crosslinking agent, catalyst of different viscosities
Close in liquid and carry out impregnation process.
As shown in figure 1, ceramic 3D printing integrated artistic flow：
1. configuring ceramic slurry, regulation slurry viscosity, rheological characteristic are allowed to meet the requirement of ceramic 3D printing device, and in vacuum
Mixing plant is still arranged after bubble by the ceramic 3D printer feed bin of clinker pipe feeding；
2. building part 3D models, G code is generated on hierarchy slicing software, and the increase Z axis of link is moved to G0 and is moved, it
The control system of ceramic 3D printing device is inputted by data-interface afterwards；
3. printing is realized by ceramic 3D printing device while the shaping that is heating and curing, forms ceramic form；
4. if necessary surface repairing type or dipping can be carried out to blank, afterwards as being sintered shaping in atmosphere furnace.
Slurry configuration is configured to using vinylsiloxane as binding agent and the methyl hydrogen siloxane crosslinking agent of addition 5 ~ 15%
Dual-component binder；1 ~ 3% catalyst is configured to dual-component catalyst with inhibitor；By binding agent, catalyst, high viscosity second
Alkenyl siloxane is mixed into calcined kaolin powder and aluminium, titanium, silicon active filler solid-phase component, is finally configured to thermosetting ceramic slurry
Material, can realize curing molding, and part form can be kept in high temperature sintering by lower temperature heating.
Section program is improved in terms of motion control, the fortune up and down of Z axis is separately added into before and after the G0 motions of G code
It is dynamic, it is to avoid extruder head conflicts with printable layer.
Slurry is obtained by conveying pipeline, the flow of slurry can accurately be controlled, and the extrusion of continuous feeding can be realized
Device.In transmission mechanism, deceleration, deflecting are realized to the moment of torsion that motor is exported, the thrust larger to plunger is converted into.It can be feed bin
Larger pressure is provided, so as to reduce minimum diameter that discharge opening allowed and improve discharging stability.
Feed bin, extruder head, discharge opening, heating radiation source, elevating movement motor, transmission mechanism composition Double-plunger extrusion knot
Structure, any time, one of extruder head realizes that extrusion is acted, and another extruder head realizes charging action or static, to ensure
Continuous feeding, while the effect for reducing feed bin volume, mitigating three-dimensional motion mechanism load can be realized.
Preferably, tapping channel is connected with feed bin, and when one of motor is that feed bin applies pressure, another click
Reversion, forms negative pressure, and plug makes plug deflecting automatically or by motor assist in the presence of pressure difference and slurry viscosity, opens high
Press mouth, close low pressure port, to realize that high-pressure mouth opens discharging, low pressure port is closed and fed by clinker pipe.Plunger motion is to spacing
During the position of the switch, motor reversal, while plug commutates, repeats above-mentioned action, so as to realize continuous feeding.
Extrude cephalic par and downward annular heating radiation source be installed, the slurry silk printed is heated at high temperature,
It is molded with the heat cure for realizing slurry, infrared source controls to adjust power output by temperature controller.Extruder head cooling device is in annular
Between infrared source internal diameter and extruder head, impression of the thermal source to extruder head is completely cut off by circulating water, it is to avoid slurry is in extrusion
Solidify in head.
Claims (12)
1. set on a kind of extruded type ceramic product 3D printing device, including the foundation frame being made up of support and base, foundation frame
There are three-axis moving mechanism and extrusion mechanism, it is characterised in that
The three-axis moving mechanism includes being arranged on two stands moving forward and backward mechanism, the horizontal movement being crossed on two stands
Mechanism and the elevating movement mechanism being hung on horicontal motion mechanism；In described three-axis moving mechanism, including walking beam and
It is connected thereto the motion motor of control；
The extrusion mechanism is arranged on below elevating movement mechanism；Extrusion mechanism includes feed bin, extruder head and conveying pipeline, conveying
Pipe is arranged on the periphery of extruder head, and is connected with the feed bin being arranged on inside extruder head；Bin bottom inside the extruder head
It is provided with tapping channel, the plug that tapping channel bottom is set equipped with activity；The bottom periphery of the extruder head is set with annular
Heating radiation source.
2. extruded type ceramic product 3D printing device according to claim 1, it is characterised in that described three-axis moving machine
In structure：
Moving forward and backward mechanism includes front and rear beam, moves forward and backward motor and move forward and backward limiting plate；Front and rear beam is arranged on support, preceding
The front end sleeve of the back rest is equipped with limiting plate is moved forward and backward, and the rear end of front and rear beam, which is provided with, moves forward and backward seat, and front and rear beam is with moving forward and backward
It is to be slidably matched between seat；
Horicontal motion mechanism includes horizontal beam, horizontal movement motor and horizontal movement limiting plate；Front and rear beam be crossed on it is described before
Afterwards above kinematic nest, one end of horizontal beam is provided with horizontal movement motor, and the both ends of horizontal beam are respectively installed with level fortune
Dynamic limiting plate, horizontal movement seat is arranged on horizontal beam, and is to be slidably matched between horizontal beam；
Elevating movement mechanism includes lift beam, elevating movement motor and transmission mechanism；Elevating movement motor and transmission mechanism are pacified
On horizontal movement seat；The transmission mechanism includes the worm and gear combination of at least two groups intermeshing transmissions, every group of worm gear
Input in worm combination matches an elevating movement motor respectively, and its output end is inserted into the feed bin in extruder head.
3. extruded type ceramic product 3D printing device according to claim 2, it is characterised in that inside the extruder head
Feed bin is hollow cylindrical cavity body structure, and feed bin is connected with the conveying pipeline of periphery；The side of feed bin bottom surface is provided with tapping channel.
4. extruded type ceramic product 3D printing device according to claim 3, it is characterised in that under the tapping channel
Side is provided with plug；Described plug is conical cylinder, and its miner diameter end is actively plugged in the bottom of tapping channel.
5. extruded type ceramic product 3D printing device according to claim 4, it is characterised in that set below the plug
A seated is equipped with, the seated is fixedly connected with the lower surface of plug, a pole is provided with the middle part of seated, the pole exists with seated
It is vertically arranged in same level, the two ends of pole are inserted into the pivot slot on extruder head inwall corresponding thereto；Two plugs
Alternately swung up and down centered on pole.
6. extruded type ceramic product 3D printing device according to claim 1, it is characterised in that in elevating movement mechanism,
The lower end of lift beam is installed with a horizontally disposed opposed platforms, and thermal source is provided with the opposed platforms bottom surface.
7. extruded type ceramic product 3D printing device according to claim 1, it is characterised in that around discharge opening, add
The periphery of infrared source is surrounded respectively circulating water pipeline, has heat-insulated between the circulating water pipeline and heating radiation source
Material layer.
8. a kind of method that application extruded type ceramic product 3D printing device carries out 3D printing, it is characterised in that
A, preparation raw material：It is main component with organosilicon polymer and ceramic powder, wherein polymer and ceramic powder proportion is according to pottery
Porcelain slurry fluidity and viscosity requirement control, the two gross weight proportion is 30-60%, is configured to thermosetting high viscosity ceramics
Slurry；
B, slurry are delivered in feed bin by conveying pipeline, under two feed bin differential pressure actions, and the plug in tapping channel is freely lived around pole
It is dynamic, complete commutation extrusion slurry；
After c, slurry extrusion, successively it is piled on opposed platforms in part, extrusion with the three-axis moving of 3D printing device,
The thermal source on heating radiation source and opposed platforms on discharge opening is heated to slurry and part simultaneously, cold around extrusion cavities
But device cools for slurry；
After the completion of d, extrusion, it is cooled in room temperature, feeding oxygen-free environment and is sintered, part is completed.
9. the method for extruded type ceramic product 3D printing according to claim 8, it is characterised in that the slurry includes
Machine silicon bonding, organosilicon cross-linking agent, catalyst, ceramic powder and tackifier, inhibitor, are multicomponent high viscosity fluid slurry
Material.
10. the method for extruded type ceramic product 3D printing according to claim 9, it is characterised in that
Binding agent and the low viscosity organosilicon polymer that crosslinking agent is thermally cross-linkable；
Tackifier are that the high-viscosity organosilicon polymer of heat cross-linking can occur with crosslinking agent；
Ceramic powder main component is the calcined kaolin containing active filler and inert filler.
11. the method for extruded type ceramic product 3D printing according to claim 9, it is characterised in that ceramic powder mainly into
It is divided into the calcined kaolin containing active filler and inert filler, the wherein proportion of active filler and inert filler is 2-3.5%.
12. the method for extruded type ceramic product 3D printing according to claim 8, it is characterised in that sintering process be
Completed under nitrogen, ammonia or other reducing atmosphere environment.
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| CN109435008A (en) * | 2018-12-29 | 2019-03-08 | 长沙理工大学 | A kind of ceramic body 3D printing molding equipment |
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Application publication date: 20170811 Assignee: Zhihe (Tangshan) Intelligent Equipment Co.,Ltd. Assignor: NORTH CHINA University OF SCIENCE AND TECHNOLOGY Contract record no.: X2024980003973 Denomination of invention: 3D printing device and method for extruded ceramic products Granted publication date: 20231124 License type: Common License Record date: 20240403 |