CN106217882B - The method and apparatus of 3D printing ceramic false tooth suitable for Stereolithography - Google Patents
The method and apparatus of 3D printing ceramic false tooth suitable for Stereolithography Download PDFInfo
- Publication number
- CN106217882B CN106217882B CN201610695268.0A CN201610695268A CN106217882B CN 106217882 B CN106217882 B CN 106217882B CN 201610695268 A CN201610695268 A CN 201610695268A CN 106217882 B CN106217882 B CN 106217882B
- Authority
- CN
- China
- Prior art keywords
- printing
- base
- toner
- control system
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
Abstract
The present invention relates to a kind of method and apparatus of 3D printing ceramic false tooth suitable for Stereolithography, belong to tooth manufacture technology field, the tooth data for obtaining scanning in method, the data of every tomographic image after data processing obtains data model slice to be printed, and send control system to, controlling fluid infusion movement by control system makes the liquid level of base-material maintain preset height always, base-material is configured in proportion by photosensitive resin and ceramic powder, control system control is completed to stir to feeding-in liquid after fluid infusion, printing is by the way of proj ected bottom, successive projection goes out the slice figure of every tomographic image, line light source of going forward side by side exposes and successively completes to solidify.Have the advantages that manufacturing process is simple, producing efficiency is high, consumptive material is few and production precision is high, matching is good.
Description
Technical field
The present invention relates to artificial tooth manufacture technology field, it is related specifically to be a kind of 3D printing suitable for Stereolithography
The method and device of ceramic false tooth.
Background technique
3D printing technique common at present has: photocureable rapid shaping (stereolithography, abbreviation SL), selection
The laser sintered method (Selective Laser Sintering, SLS) of property, selective laser melt molding (Selective
Laser Melting, SLM), fused glass pellet method (Fused Deposition Modeling, FDM), three dimensional printing method
(Three Dimensional Printing, 3DP) etc..It photocureable rapid shaping (Stereolithography, SL) and is based on
The 3D printing technique of DLP (Digital Light Procession) photocuring projection is all stereolithography apparatus technology.
Stereolithography apparatus method (include laser photocuring and DLP photocuring, then be referred to as photocuring) has following excellent
Gesture: (1) dimensional accuracy is high, and the margin of tolerance is in ± 0.03mm~± 0.1mm；(2) excellent surface quality, with FDM etc. other
3D forming technique is good compared to surface quality；(3) complicated model can be made and size compares refined model；It (4) can be with
Directly make the disappearance type with hollow structure towards precision-investment casting.Stereolithography apparatus material is usually photocuring
Resin, compared with other curing materials, light-cured resin includes that curing rate is fast, does not need heating, saves the advantages that energy.
DLP is the abbreviation of " Digital Light Procession ", as digital light processing, that is to say, that this technology
Video signal is first passed through digital processing, then light is projected again.It is opened based on TI (Texas Instruments) company
The digital micromirror elements of hair --- DMD (Digital Micromirror Device) completes the skill that viewable numbers information is shown
Art.Say specific, be exactly DLP shadow casting technique apply digital micro-mirror chip (DMD) as chief processing element with
Realize optical digital computing process.Based on the 3D printing technique of DLP projection, i.e., usually said face exposes 3D printing technique.Tool
It is to use liquid photosensitive resin for material for body, using the light source of specific wavelength, is projected out corresponding pattern using DLP technology,
Selective solidification is carried out to liquid photosensitive resin, realizes printing.DLP technology, generally static state DLP shadow casting technique, i.e. DLP projection
Fixed DLP projector does not move on the base, in every layer of exposure, corresponding image is projected out, when keeping corresponding exposure
Between, complete every layer of solidification.
The preparation of ceramics, has long and mature traditional handicraft, grows with each passing hour, the appearance of new forming technique is so that ceramics
It produces and manufactures followed by scientific and technological development and innovate.The appearance of 3D printing technique to the preparation of ceramics provide it is a kind of newly at
Type thinking changes Production of Ceramics preparation and needs mold so that preparation process becomes increasing material production by the original material production that subtracts
With the cutting apparatus such as machining come the conventional molding process that produces.In 3D printing technique, SL and DLP formed precision height, surface matter
Limited material that is good, but being applicable in its printing is measured, mainly based on photosensitive resin.
The background of artificial tooth manufacture: the purpose of wearing dentures also improves dental while restoring patient's masticatory function
Tooth aesthetics.The production process of traditional artificial tooth has:
(1) do pre- mould with silica gel, the thing worked it out pallet, be equivalent to by silica gel by mouth artificial tooth carry out at
Type utilizes the shape of silica gel acquisition artificial tooth；
(2) modelling, a kind of situation are to fill gypsum into pallet, 2 hours it is relatively stable after cutting, cut-off rule, and be directed to
The specific artificial tooth to be done is repaired, the general 24 hours stabilizations of plaster cast；The pedestal for selecting artificial tooth, there is plastic feet and gypsum
Two kinds of pedestal more, and plastic feet is more preferable, because of the process of the thermal expansion of gypsum pedestal, contraction, therefore has certain deformation to influence, choosing
When with species of gypsum, the gypsum that select relative thermal expansion coefficient small；Another situation is that directly scanning pallet, and utilize computer
Establish three-dimensional data, and last direct printer model；
(3) for the artificial tooth of repairing, gypsum gum need to be removed, leaves bead line；For artificial tooth to be treated, according to
The difference of doctor, can generally remove the part of 1mm or so under gum or gum, and neck member line requires that clear come out can be printed；
(4) base station generally uses machining metal or zirconium oxide base station；
(5) corona is made, CNC machine is generally used, utilizes the machining of multi-axis NC Machine Tools；Corona colouring is can not
Lack, with to after corona, sintering curing is secondary to differing three times on ceramic powder (colored a variety of match).
It can be seen that traditional artificial tooth processing is using CNC cutting process (subtracting material manufacture), artificial tooth production process is more complicated,
Material use is insufficient, and there are more leftover pieces, material consumption is more.Traditional embedding casting method makes artificial tooth, manufacture
Precision is lower, and production efficiency is low, and the artificial tooth and patient's matching degree of processing are poor.
In addition, there is also the production method that another kind is temporary dental crown, producer in this method, according to possible size,
Make various different temporary dental crown.Having for shoes, which is sold, just as shoes store adapts to being of a size for different crowd.Patient needs
When temporary dental crown, is tried on one by one from these mark moulds, choose the temporary dental crown for being suitble to size.The disadvantage is that temporary dental crown batch
Amount produces, uncertain inhibition and generation, can not accomplish high-precision in size, and when for personalized patient, matching degree is bad, is only suitable for short-term half
It is used in year.
Summary of the invention
For deficiency present in current artificial tooth manufacturing process, the purpose of the present invention is to provide one kind to be suitable for photocuring
The method and apparatus of molding 3D printing ceramic false tooth, come solve production process present in current artificial tooth manufacturing process it is complicated,
Producing efficiency is low, consumptive material is more and the problem of production low precision, matching difference.
To solve its technical problem, this invention takes a kind of sides of 3D printing ceramic false tooth suitable for Stereolithography
Method, specifically includes the following steps: the tooth data that scanning obtains 1) are converted to tooth 3D model to be printed；At data
Reason mode obtains the data of every tomographic image after tooth 3D model slice to be printed, and every tomographic image data after slice are passed
Give control system；2) before printing, fluid infusion is carried out under control of the control system, and the liquid level of base-material is made to reach default height
Degree, base-material are configured in proportion by photosensitive resin and ceramic powder；After the completion of fluid infusion, base-material is stirred under control of the control system
It mixes；3) start ceramic false tooth printing, successive projection goes out slice map corresponding to every tomographic image data by the way of proj ected bottom
Shape, and light source exposure is carried out, solidification is successively completed, and before every layer of printing, control system judges whether to fluid infusion, with
And according to preset stirring action entry condition to determine whether be stirred to liquid, and controls and be stirred.Need
Before printing, the liquid supply device in institute's use device is adjusted, the liquid level of base-material in resin storage tank in institute's use device is reached
Preset height；Control system controls liquid supply device by liquid level detection feedback system and mends into resin storage tank in print procedure
Enter base-material, guarantees that liquid level maintains preset height in resin storage tank；In print procedure, when meeting setting condition, pass through institute
Rabbling mechanism in use device is stirred the base-material filled into resin storage tank.
Preferably, when the artificial tooth of production has color requirement, toner is also filled into the fluid infusion, makes the base-material and color
The liquid level of the mixed liquor of agent reaches preset height, and the ratio of the base-material and the toner that fill into is default proportion.I.e.
The ratio of the base-material and toner in the resin storage tank for flowing into institute's use device is controlled during fluid infusion in default proportion, control system institute
The liquid level of control is the liquid level of liquid after base-material mixes according to the ratio with toner.
It is further preferred that controlling the base-material and the toner respectively according to default proportion during the fluid infusion
The amount of filling into.That is base-material and toner is contained in two mutually independent volumes, and the bleed port of two volumes is respectively by controlling
System control, and the liquid that inside contains is added into according to the ratio in the resin storage tank of use device respectively.
It is further preferred that before every layer of printing, the control system is by base-material corresponding to layer chromaticity requirements to be printed
It matches with toner, is compared with current base-material with the mixing match of toner；If two proportions are inconsistent, the control system root
According to the current base-material and toner mixed liquor liquid level that feedback is come is received, the amount of base-material and toner in current mixed liquor is calculated,
And combine layer to be printed to the ratio requirement of base-material and toner, control the amount of filling into of the base-material or toner.
It is further preferred that during the fluid infusion, after the base-material is mixed with the toner by default proportion again
It is added in the form of mixed liquor.I.e. base-material mends the resin storage tank to use device with mixed liquor after mixing with toner by default proportion
It is interior.
Preferably, in above-mentioned steps 3) in every layer of print procedure in, be projected out every tomographic image data institute described in the progress
Before corresponding slice figure, preset time is waited, it is ensured that liquid surface flushes.
Preferably, in above-mentioned steps 3) in, printing specifically includes the following steps:
I) before current layer printing, the control system judges whether to need fluid infusion, if desired fluid infusion, then carries out fluid infusion, mends
Ii is entered step after liquid)；If not needing fluid infusion, it is directly entered step ii)；
Ii) control system judges whether to need to be stirred liquid, if desired stirs, then control is for printing
Workbench is moved upwards with the rabbling mechanism that is staggered, and controls the rabbling mechanism movement and liquid is sufficiently stirred, and is stirred
After, rabbling mechanism returns to initial position, and workbench returns to the print position of current layer；If not needing to stir, directly
Workbench movement is driven, workbench is made to reach the print position of current layer；
Iii after) waiting preset time, slice map corresponding to current layer image data is projected out using proj ected bottom mode
Shape, and carry out exposure curing:
Iv) judge subsequent whether also slice figure to be printed, if it exists slice figure to be printed, then workbench
Height after one layer of vertical ascent, then repeats above-mentioned i) to iii) step, is successively printed；It is to be printed if it does not exist
It is sliced figure, then printing terminates, and completes the processing of ceramic false tooth.
Preferably, after the 3D printing part for generating the ceramic false tooth ,-isostatic pressing is sintered to 3D printing part.
The present invention also provides a kind of devices of 3D printing ceramic false tooth suitable for Stereolithography comprising fixed machine
Frame goes up and down with the resin storage tank for being used to hold liquid on fixed frame, the cured light sources project system of completion projection, Z axis is mounted on and is
System, rabbling mechanism, liquid supply device and control system；Light sources project system is located at the lower section of resin storage tank, and the setting of Z axis jacking system exists
The left side of resin storage tank is arranged in the rear side of resin storage tank, rabbling mechanism, and mixing part probes into the vallecular cavity of resin storage tank, and liquid supply device goes out
Liquid mouth is connected to resin storage tank, and workbench is mounted on Z axis jacking system can be along Z axis lifting moving；It is arranged in resin storage tank
Electromagnetic valve is arranged in the liquid outlet of liquid level sensor, liquid supply device；Liquid level sensor, electromagnetic valve, light sources project system, Z axis
Jacking system, rabbling mechanism, liquid supply device are connected with control system respectively.
Preferably, the mixing part of the rabbling mechanism is stirring scratch board, and stirring scratch board is made with respect to resin storage tank in the horizontal plane
Straight reciprocating.
Preferably, the mixing part of the rabbling mechanism is ball-type stirring body, and ball-type stirring body makees rotation fortune relative to resin storage tank
It is dynamic.
Preferably, the liquid supply device includes base-material cavity and toner cavity, corresponds to the base-material cavity and toner cavity
Liquid outlet electromagnetic valve is respectively set.
As described above the present invention relates to a kind of 3D printing ceramic false tooth suitable for Stereolithography method, have
Below the utility model has the advantages that printing shaping process is not necessarily to a large amount of base-materials, it is only necessary to which a small amount of supplement base-material can be printed, it is only necessary to base
Material, which can pave the space XY corresponding to workbench, can start to print；It can accomplish finely to be layered, minimum layering may be implemented
The even smaller thickness classification of 10 microns of thickness, ensure that the precision of printing artificial tooth；Resin viscosity added with ceramic powder is very big,
Liquid, can for the base-material being mixed to form using low, medium viscosity resin by self gravitation effect under proj ected bottom mode
The base-material being mixed to form using highly viscous resin can also be protected by the stirring action of rabbling mechanism with natural levelling
Resin storage tank bottom liquid levelling is demonstrate,proved, realizes normal print；In order to guarantee gained artificial tooth intensity, liquid base material by photosensitive resin with it is micro-
Short grained ceramic powder mixes according to a certain ratio, is directly realized by 3D printing ceramics tooth.
As described above the present invention relates to a kind of 3D printing ceramic false tooth suitable for Stereolithography device, have
Below the utility model has the advantages that making artificial tooth processing that there is industry makeup to set, exclusive rabbling mechanism is able to achieve filling for high viscosity base material
Divide mixing, and guarantee to be uniformly mixed, the bottom forming material of resin storage tank is avoided to precipitate；Exclusive toner configuration feature, passes through color
The blend proportion of agent and base-material can deploy the color of mixing gained fluent material, realize the artificial tooth processing with personalized color,
Rabbling mechanism can guarantee the uniform of toning；The height of resin storage tank liquid level can be monitored in real time and be adjusted, guarantee printing shaping mistake
Journey is gone on smoothly, and improves automation control efficiency.
Involved method and device obtains the process of artificial tooth through the invention and traditional artificial tooth processing is cut using CNC
Cutting method is compared, and this method is increasing material manufacturing mode, and material use is abundant, and leftover pieces are substantially not present, and material is saved, with three-dimensional
Scanning technique simplifies artificial tooth production process after combining, and realizes digitlization gear division production, makes justice with traditional embedding casting method
Tooth is compared, and the precision of gained artificial tooth is higher, and producing efficiency is higher, and personalized artificial tooth may be implemented after introducing toner allocation process
Batch machining greatly improves the production efficiency of personalized artificial tooth processing；On customizing artificial tooth processing, in conjunction with 3-D scanning skill
Art shortens the artificial tooth process-cycle, the allotment of color may be implemented, it might even be possible to save the link of porcelain in traditional craft, guarantee
The phase recency of artificial tooth color and natural tooth；In conjunction with digitlization gear division, avoid processing using conventional cast by the 3D printing
Artificial tooth, may be implemented to carry out secondary curing processing with the higher matching degree of patient to guarantee to solidify to the artificial tooth printed
Sufficiently, isostatic pressing is carried out to guarantee the consistency of ceramic material, thus the intensity of artificial tooth obtained by general warranty.
Detailed description of the invention
Fig. 1 is the flow diagram that printing of the present invention prepares artificial tooth；
Fig. 2 is the structural scheme of mechanism of the device of printing ceramic false tooth involved in the present invention.
Figure label are as follows: 1 fixed frame, 2 resin storage tanks, 3 workbenches, 4 light sources project systems, 51 motors one, 52 is vertical
Transmission mechanism, 61 motors two, 62 stirring scratch boards, 7 liquid supply devices
Specific embodiment
Structure depicted in Figure of description, ratio, size etc., only to cooperate the revealed content of specification, with
Understand for those skilled in the art and read, be not intended to limit the invention enforceable qualifications, therefore does not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated not influencing the present invention
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents can cover.Meanwhile
Cited such as "upper", "lower", "front", "rear", " centre " term in this specification are merely convenient to being illustrated for narration, and
It is non-that to limit the scope of the invention, relativeness is altered or modified, under the content of no substantial changes in technology, when
Also it is considered as the enforceable scope of the present invention.
With tri- axis of Fig. 2 view definition X, Y, Z, tri- axis of X, Y, Z is mutually perpendicular in three-dimensional space, and wherein the direction XY refers to horizontal plane
Direction, vertically, X-axis is left and right directions to Z axis, and Y-axis is front-rear direction.
A kind of method of 3D printing ceramic false tooth suitable for Stereolithography provided by the invention, uses principle are as follows:
Firstly, analyzing the situation of patients teeth according to the tooth data of scanning by the data that 3-D scanning obtains patients teeth, lead to
The shape for crossing dentistry design software design artificial tooth, obtains the 3D model of artificial tooth；Then according to the 3D model of the artificial tooth of acquisition, consider
It is required that artificial tooth color characteristic, photosensitive resin, ceramic powder, toner are configured to mixing liquid (photosensitive resin and ceramics in proportion
Powder is configured to base-material in proportion), carry out 3D printing ceramics tooth；Finally the ceramic tooth printed be sintered-is waited at static pressure
Reason etc. improves artificial tooth intensity, is fixed on base station by the dedicated glue of gear division when ceramics tooth obtained is eventually in disease population
On.
The method that a kind of 3D printing ceramic false tooth suitable for Stereolithography provided by the present invention is described below, is being obtained
Existing detailed step during 3D printing ceramic false tooth is extremely completed after taking the 3D model of artificial tooth are as follows:
(1) the tooth data that scanning obtains are converted into tooth 3D model to be printed, are obtained by data processing method
Every tomographic image data after tooth 3D model slice to be printed, and give every tomographic image data transmission after slice to control system
System；As the case may be, it may include the colouring information of artificial tooth to be produced in the data information that aforementioned processing obtains；
(2) fluid infusion/toning process, (liquid supply device includes the level sensing being located in resin storage tank to adjustment liquid supply device first
Device, liquid level sensor connect control system), so that the liquid level of base-material in resin storage tank is reached preset height, if production artificial tooth has
Color requirement, then liquid level adjusted is the liquid level of gained mixed liquor after base-material is mixed with toner；The control system
The liquid level signal that system is fed back according to liquid level detection feedback system, judges whether to need to continue fluid infusion, to guarantee resin
The liquid level of base-material reaches the preset height in slot.If production artificial tooth has color requirement, is controlled during fluid infusion and flow into tree
The ratio of base-material and toner is default proportion in rouge slot；Control system control to adjust liquid level preset height be the base-material with
The liquid level of mixed liquor after the toner mixes according to the proportion.
Every layer printing before, the control system according to preset stirring condition to determine whether to the liquid in resin storage tank into
Row is stirred and is controlled and is stirred.
(3) ceramic false tooth prints, and successive projection goes out corresponding to every tomographic image data by the way of proj ected bottom
It is sliced figure, and carries out light source exposure, successively completes solidification, and before every layer of printing, the control system is according to liquid level
The liquid level signal of height detection feedback system feedback, judges whether to need to carry out fluid infusion, to guarantee the liquid level of base-material in resin storage tank
Height maintains the preset height.If production artificial tooth has a color requirement, controlled during fluid infusion flow into resin storage tank base-material with
The ratio of toner is default proportion；Every layer printing before, control system control to adjust liquid level preset height be the base-material with
The liquid level of mixed liquor after the toner mixes according to the proportion.And before every layer of printing, the control system is according to default
Stirring condition to determine whether the liquid in resin storage tank be stirred and controlled being stirred.
Preset stirring action entry condition in print procedure can be following two kinds of situations, but not by following two kinds of feelings
The limitation of condition: first, the time T1 of precipitating is precipitated naturally in the quiescent state according to the base-material stirred evenly, a stirring interval is preset
Time T2, wherein T1 > T2 (T1 be the period rather than time point with T2), after the completion of preceding primary stirring, by T2 when
It is then stirred next time at long interval；Second, when printing artificial tooth, there is color to require, according to the mixed liquor color of base-material and toner
Whether degree meets the chromaticity requirements of current layer, judges whether to need to be stirred, and judgement side above-mentioned in this case
Formula still has, that is, calculates the Fixed Initial Point of T2 duration, once stir including the movement being stirred because coloration is not inconsistent, such as preceding
It after mixing, undergoes T3 duration (T2 > T3), has carried out a stirring action because coloration is not inconsistent, then the judgement of T2 duration is needed in T3
The current stirring action carried out after duration recalculates.The starting resistance of printing operation and stirring action other side each other in print procedure
Only condition.
Aforementioned " starting of printing operation and stirring action other side each other prevent condition ", understands are as follows: meeting preset stir
When mixing action launching condition, if stirring action is prevented from carrying out printing operation, needs to wait for the secondary printing operation and complete
Afterwards, it is just stirred movement, i.e. the execution of stirring action is delayed.Similarly, when being stirred movement, even if input printing
Instruction, printing operation will not execute.
The method of above-mentioned printing ceramic false tooth has the beneficial effect that printing shaping process without a large amount of base-materials, it is only necessary to a small amount of
Supplement base-material can be printed, it is only necessary to which base-material, which can pave the space XY corresponding to workbench, can start to print；It can
Accomplish finely to be layered, the even smaller thickness classification of 10 microns of minimum lift height may be implemented, ensure that the essence of printing artificial tooth
Degree；Resin viscosity added with ceramic powder is very big, and liquid is by self gravitation effect under proj ected bottom mode, for using
The base-material that low, medium viscosity resin is mixed to form can natural levelling, for the base-material being mixed to form using highly viscous resin,
By the stirring action of rabbling mechanism it is also ensured that resin storage tank bottom liquid levelling, realizes normal print；In order to guarantee gained
Artificial tooth intensity, liquid base material mix photosensitive resin with the ceramic powder of molecule according to a certain ratio, are directly realized by 3D printing pottery
Porcelain tooth.
In short, the above method improves the simplification of artificial tooth production process, producing efficiency, the consumptive material used is reduced, production justice
The precision of tooth significantly improves, matching is more preferable.
The process for controlling and adjusting fluid infusion is described in detail for making artificial tooth and have color requirement:
Liquid level in liquid level detection feedback system real-time detection resin storage tank, and liquid level is fed back into control
System processed；Control system is judged according to the liquid level data of acquisition, if the adding liquid in resin storage tank is needed, if
Judgement needs, and control system sends the instruction of adding liquid to liquid supply device, opens the leakage fluid dram of liquid supply device and starts fluid infusion,
Stop fluid infusion after liquid level detection feedback system detects that liquid level reaches setting height.
When having color requirement to obtained artificial tooth, toning is divided into two kinds of situations: i.e.
A, according to the amount of the base-material in the resin storage tank detected, toner is added by a certain percentage and supplements and uniformly mixes
It closes, the cavity of liquid supply device is divided into base-material chamber and toner chamber in this case；According to the amount of base-material in resin storage tank, toner is pressed one
After certainty ratio is added, the height of default liquid is such as not achieved, then base-material and toner can require to supplement simultaneously according to the proportion adds
Enter into resin storage tank, until preset liquid level；In this case, liquid supply device is corresponding in base-material chamber and toner chamber lower end
Leakage fluid dram is provided with flow sensor, to realize that the monitoring to base-material and toner dispatch amount is adjusted；
B, base-material is packed into well and after mixing sufficiently to the cavity of liquid supply device with toner first configuration by a certain percentage in advance
It is interior, it is sent into resin storage tank in the form of mixed liquor；
In above-mentioned A, color can be controlled by the addition of toner, solid by the amount and light of control toner addition
The ratio of the amount of the base-material addition of change printing, control base-material and toner can control the color of ceramic tooth.Advantage is face
The configuration of color customizable controls relative difficulty the disadvantage is that consistency is poor.In above-mentioned B, photosensitive resin, pottery are carried out in advance
The proportional arrangement of porcelain powder, toner etc. makes the different material prescription of color, the material for modulating color is directly mended
Liquid.Advantage is that consistency is good, the disadvantage is that same batch cannot change color.
Before printing, after completing fluid infusion, rabbling mechanism is stirred the mixing liquid of resin storage tank, prevents resin trench bottom shape
At precipitate and ensure mixed liquor mixing it is uniform；After stirring, (returning to initial position) is zeroed in rabbling mechanism position.
Print procedure is described in detail for making artificial tooth and have color requirement in print procedure.
As shown in Figure 1, ceramic false tooth printing in, printing specifically includes the following steps:
I) before current layer printing, the control system judges whether to need fluid infusion, if desired fluid infusion, then carries out fluid infusion, mends
Ii is entered step after liquid)；If not needing fluid infusion, it is directly entered step ii)；
Ii) control system judges whether to need to be stirred liquid, if desired stirs, then control is for printing
Workbench is moved upwards with the rabbling mechanism that is staggered (conceding space to the movement of following rabbling mechanism), controls rabbling mechanism pair
Liquid is sufficiently stirred, and after stirring, rabbling mechanism is returned to initial position (rabbling mechanism position returns to zero), and workbench returns
To the print position of current layer (work-table position returns to zero)；If not needing to stir, workbench movement is directly driven, work is made
Make the print position that platform reaches current layer；
Iii after) waiting preset time, slice map corresponding to current layer image data is projected out using proj ected bottom mode
Shape, and it is exposed solidification；
Iv) judge subsequent whether also slice figure to be printed, if it exists slice figure to be printed, then workbench
It after the height of one thickness of vertical ascent, then repeats above-mentioned i) to iii) step, is successively printed；It is to be printed if it does not exist
Slice figure, then printing terminate, complete the processing of ceramic false tooth.
After ultimately forming the 3D solid of artificial tooth, it is opposite away from fortune that control system drives workbench and resin storage tank to make
It is dynamic, so that entire 3D solid is detached from resin storage tank liquid level.
Judge whether to need the foundation that stirs in print procedure are as follows: first, according to the base-material stirred evenly in the quiescent state from
The time T1 of precipitating is so precipitated, presets a stirring interval time T2, wherein T1 > T2 (T1 and T2 be the period rather than when
Between point), after the completion of preceding primary stirring, then stirred next time by the duration interval of T2；Second, the artificial tooth of printing has
Whether color requirement, the chromaticity requirements of current layer are met according to the mixed liquor coloration of base-material and toner, judge whether to need to carry out
Stirring, and judgment mode above-mentioned in this case still has, that is, calculates the Fixed Initial Point of T2 duration, including not because of coloration
The movement for according with and being stirred, such as after preceding primary stirring, undergo T3 duration (T2 > T3), carried out one because coloration is not inconsistent
Secondary stirring action, then the judgement of T2 duration needs the current stirring action carried out after T3 duration to recalculate.
The waiting preset time (waiting the preset time hereinafter referred to as waiting time): the waiting time can at least be divided into
Waiting time t1With waiting time t2(t1Greater than t2), specifically: if not needing to stir after fluid infusion, one is spaced after fluid infusion
Waiting time t1；If not needing fluid infusion, while in the case where not needing stirring again, then the one waiting time t in interval immediately2, and
It can make t2=0 second；It after fluid infusion or does not need if desired to stir in the case where fluid infusion, is then spaced a waiting time after agitation
t1。
" workbench and rabbling mechanism position return to zero " in Fig. 1 refers to the initial position that rabbling mechanism returns to before movement,
Workbench returns to current layer position to be printed.
When being required in 3D artificial tooth to be printed by color, and requiring personalized designs again, as required the artificial tooth energy printed
Enough there is a layering color, for example root is more yellow, the whiter situation of cusp just needs the variation of the proportion of base-material and toner.
At this point, base-material and toner can be mixed into mixed liquor in a kind of situation according to most dark colour, are uniformly added in resin storage tank,
As constantly base-material, at this time fluid infusion of every progress is added to the cavity of liquid supply device (being at this time a cavity) in the progress of printing
Just it needs to stir once, is the presence or absence of fluid infusion movement to judge to stir a kind of condition whether carried out, if carried out in other words
Fluid infusion will be then stirred below；In another case, the cavity of liquid supply device is divided into base-material chamber and toner chamber, with
The progress of printing is added respectively in base-material or toner to resin storage tank, and adjusts the proportion of base-material and toner (toner) constantly to control
Mixed liquor color processed it is deep or light, such as when need to heighten the color in print procedure, can by individually add toner come
The ratio for improving toner, heightens the color, and when needing to subtract light colour, can individually add base-material to dilute, every progress at this time
It once fills into base-material or the movement of toner just needs to stir once.
To realize that above-mentioned personalized designs require, the liquid level institute of the mixed liquor of the aforementioned control base-material and toner is right
The preset height answered, which should be, meets the minimum level height that printing requires.At this point, before every layer of printing, the control system will be to
Base-material corresponding to the chromaticity requirements of printable layer and toner proportion (Primary Stage Data processing obtain), and it is remaining in current resin storage tank
Base-material is compared that (it is base-material and toner under printable layer chromaticity requirements are corresponding that the proportion is corresponding with the mixing match of toner
Proportion, and obtained in Primary Stage Data processing, control system is directly transferred)；If two proportions are inconsistent, the control
System according to receive feedback come current base-material and toner mixed liquor liquid level, calculate base-material and toner in current mixed liquor
Amount, and combine layer to be printed to the ratio requirement of base-material and toner, control the amount of filling into of the base-material or toner.It is described in detail
It, it may be assumed that
Two proportions are inconsistent and learn that coloration should weaken after comparing, then the control system is anti-according to receiving at this time
Base-material and toner mixed liquor liquid level in the current resin storage tank that feedback comes calculate in current resin storage tank base-material and color in mixed liquor
The amount of agent, and combine layer to be printed to the ratio requirement of base-material and toner, it calculates and needs to fill into that how many base-material can dilute
Mixed liquor in current resin storage tank, makes base-material and toner reach the proportion of layer requirement to be printed, completes the base-material to control
The amount of filling into.Conversely, if learning that coloration should be reinforced after comparison, then control system meeting comparing calculation toner to be added
Amount, and control completion and fill into movement.Port is filled into base-material and toner, is respectively provided with flow sensor, so control system
System can accurately control the amount of filling into of the two respectively.
In the case where this tooth color changes requirement, needs are once mixed colours after usually printing N layers, so
There are the situations that base-material and toner are filled into simultaneously and filled into respectively.
Using the printing type of proj ected bottom, to the usage amount of resin in base-material (being mixed by resin and ceramics) require compared with
It is few, so being easy to remain in cleaning resin storage tank after printing finishes, avoids resin dry and hard in in-tank-solidification, influence print procedure
The calculating accuracy of base-material and toner need to be added when middle toning.
For the intensity for improving gained artificial tooth, secondary curing processing has been carried out also to guarantee solidification sufficiently, be sintered-
Isostatic pressing guarantees the consistency of ceramic material.
The device of a kind of 3D printing ceramic false tooth suitable for Stereolithography provided by the invention, as shown in Fig. 2, including
Fixed frame 1 and the resin storage tank 2 being mounted on fixed frame 1 are completed to project cured light sources project system 3, Z axis lifting system
System, rabbling mechanism, liquid supply device 7 and control system.
The control system is by PLC (programmable logic controller (PLC)) or motion control card, driver, computer or embedded
System is constituted.
The Z axis jacking system includes motor 1 and vertical transmission mechanism 52, and the rabbling mechanism includes motor 2 61
With stirring scratch board 62.
Light sources project system 4 is located at the lower section of resin storage tank 2.The light source of the light sources project system 4 can be DLP (number
Light processing, Digital light processing) technology, LCD (liquid crystal display) technology, projector, laser combination scanning vibration
One or several array of mirror or laser combination tilting mirror.Accordingly, the optical projection system in the light sources project system can
To be selected as DLP projector, LED projector, LCoS projector, LCD projector, UV projector, laser combination galvanometer, laser knot
Close one or several arrays in tilting mirror.
Light sources project system 4 is gone out the slice figure in corresponding section by the proj ected bottom of resin storage tank 2, then light sources project system
Light source in 4 exposes certain time, and exposure energy is made to meet or exceed material minimum solidification energy E, completes this layer solidification.
The vertical transmission mechanism 52 of Z axis jacking system includes vertically disposed roof beam structure, is arranged on roof beam structure and axially along vertical
Histogram to screw rod and with screw rod cooperate sliding block.Roof beam structure is located at the rear side of resin storage tank 2, and motor 1 is mounted on roof beam structure and spiral shell
The one end fits of bar.It forms a fixed connection between workbench 3 and sliding block, in motor 1 and lead screw, sliding block composition mechanism
Under driving, the reciprocating movement that achives up and down.
The rabbling mechanism further includes horizontal beam frame, and the left side of resin storage tank 2 is arranged in horizontal beam frame, and prolongs along the longitudinal direction
It stretches.Screw slider transmission mechanism is set in horizontal beam frame, and motor 2 61 is fixed on the rear end driving screw slider of horizontal beam frame
Transmission mechanism movement.The mixing part of rabbling mechanism is stirring scratch board 62, the sliding block of stirring scratch board 62 and screw slider transmission mechanism
It is cooperatively connected, it being capable of reciprocating linear movement along the longitudinal direction.Stirring scratch board 62 is insinuated into the vallecular cavity of resin storage tank 2, span radiation tree
The entire transverse direction (X-direction) of 2 vallecular cavity of rouge slot.In whipping process each time, stirring scratch board 62 can make a round trip or
After repeatedly, initial position (i.e. the vallecular cavity rearward position of resin storage tank 2) is returned to.
As another agitating mode, the mixing part of the rabbling mechanism is ball-type stirring body, which probes into
In the vallecular cavity of resin storage tank 2, the width of outer diameter and 2 vallecular cavity of resin storage tank (X to) is almost the same, and rabbling mechanism may include motor two at this time
And support arm, it is not including screw slider transmission mechanism.Support arm is fixed on fixed frame 1, and free end extends to resin storage tank 2
Simultaneously install ball-type stirring body in the top of vallecular cavity.Motor 2 61 is mounted on fixed frame 1, and resin storage tank 2 can be driven to make resin
Slot 2 rotates in the horizontal plane, just can be realized rotary motion of the ball-type stirring body with respect to resin storage tank 2 in this way, and in resin storage tank 2
Liquid be stirred.
The liquid outlet of liquid supply device 7 is connected to resin storage tank 2.Liquid level sensor is set in resin storage tank 2, liquid supply device 7
Electromagnetic valve is arranged in liquid outlet；Liquid level sensor, electromagnetic valve, light sources project system 4, motor 1, motor 2 61, fluid infusion dress
7 are set to be connected with control system.
Make artificial tooth have color requirement in the case where, the cavity of the liquid supply device correspond to the A introduced in the above method,
Two kinds of situations of B are respectively set to the combination chamber form and single cavity form of base-material cavity and toner cavity.
The action process of device is described in detail for making artificial tooth and have color requirement below:
During fluid infusion/toning, rabbling mechanism returns to initial position after completing certain stirring action；Workbench
It carries out returning to zero movement first, returns to the initial position (specifically close to the upper surface of resin trench bottom) of printing, also referred to as zero-bit.
Preparatory action is completed.
If rabbling mechanism scraper plate scheme shown in figure, specific whipping process can be implemented as follows, first work
Make the rising of platform 3, reserve the mobile gap of stirring scratch board 62, is followed by stirring for scraper plate 62 and moves along a straight line in the horizontal direction (to can be
One or many reciprocating motions), fluent material is stirred, workbench returns to current print position after stirring.?
It when judging whether current layer needs to stir, if desired stirs, workbench 3 moves upwards, and is staggered with rabbling mechanism, concedes and stirs
The space of mechanism kinematic is mixed, at this point, rabbling mechanism acts, material in slot is sufficiently stirred in realization, after the completion of stirring, blender
Structure returns to initial position, and workbench returns to the print position of current layer.Workbench 3 is directly moved to if not needing stirring
The print position of current layer.After the waiting time, light sources project system 4 is projected out cutting for corresponding section below resin storage tank 2
Piece figure, then the light source in it exposes certain time, realizes and solidifies to the layer.
In conclusion the method and dress of a kind of 3D printing ceramic false tooth suitable for Stereolithography according to the present invention
Set, in such a way that proj ected bottom exposes, by liquid supply device 7 and rabbling mechanism, at the same using photosensitive resin, ceramic powder and/
Or toner configures the mixing liquid for being in as printing material in proportion, realizes that the 3D printing of ceramic false tooth production forms.Have
Production process is simple, producing efficiency is high, consumptive material is few, production gained artificial tooth precision is high and the matching of patient is good and facilitates reality
The batch machining of existing personalization artificial tooth simultaneously improves production efficiency, shortens the advantages of customizing the artificial tooth process-cycle.
The principle of the present invention and its effect is only illustrated in above embodiment, and is not intended to limit the present invention.This hair
It is bright to be improved under the premise of without prejudice to overall thought there are many more aspect, it all can be for those skilled in the art
Without prejudice under spirit and scope of the invention, can carry out modifications and changes to above-described embodiment.Therefore, technical field such as
Middle all equivalent modifications for being completed without departing from the spirit and technical ideas disclosed in the present invention of tool usually intellectual or
Change, should be covered by the claims of the present invention.
Claims (8)
1. a kind of method of the 3D printing ceramic false tooth suitable for Stereolithography, specifically includes the following steps:
1) the tooth data conversion for obtaining scanning is as tooth 3D model to be printed；It is obtained by data processing method wait beat
Every tomographic image data after the tooth 3D model slice of print, and by every tomographic image data transmission after slice to control system；2)
Before printing, fluid infusion is carried out under control of the control system, so that the liquid level of base-material is reached preset height, base-material is by photosensitive resin
It is configured in proportion with ceramic powder；After the completion of fluid infusion, base-material is stirred under control of the control system；3) start ceramic false tooth
Printing, successive projection goes out the slice figure of every tomographic image data by the way of proj ected bottom, and carries out light source exposure, successively
Solidification is completed, and before every layer of printing, control system judges whether to fluid infusion, and starts according to preset stirring action
Condition is to determine whether be stirred liquid, and control and be stirred；When the artificial tooth of production has color requirement, described
Toner is also filled into when fluid infusion, and the liquid level of the mixed liquor of the base-material and the toner is made to reach preset height；The institute filled into
The ratio for stating base-material and the toner is default proportion, during the fluid infusion, according to described in default proportion respectively control
The amount of filling into of base-material and the toner；Before every layer of printing, the control system is by base corresponding to layer chromaticity requirements to be printed
Material is matched with toner, is compared with current base-material with the mixing match of toner；If two proportions are inconsistent, the control system
According to the current base-material and toner mixed liquor liquid level that feedback is come is received, base-material and toner in current mixed liquor are calculated
Amount, and combine layer to be printed to the ratio requirement of base-material and toner, control the amount of filling into of the base-material or toner.
2. the method for the 3D printing ceramic false tooth according to claim 1 suitable for Stereolithography, it is characterized in that: in institute
It states in every layer of print procedure in step 3), before being projected out slice figure corresponding to every tomographic image data described in the progress, also
Preset time is waited, to ensure liquid surface levelling.
3. the method for the 3D printing ceramic false tooth according to claim 1 suitable for Stereolithography, it is characterized in that: in institute
State in 3), printing specifically includes the following steps:
I) before current layer printing, the control system judges whether to need fluid infusion, and if desired fluid infusion then carries out fluid infusion, after fluid infusion
It enters step ii)；If not needing fluid infusion, it is directly entered step ii)；
Ii) the control system judges whether to need to be stirred liquid, if desired stirs, then work of the control for printing
Platform is moved upwards with the rabbling mechanism that is staggered, and controls rabbling mechanism and liquid is sufficiently stirred, after stirring, blender
Structure returns to initial position, and workbench returns to the print position of current layer；If not needing to stir, workbench fortune is directly driven
It is dynamic, so that workbench is reached the print position of current layer；
Iii) after waiting preset time, slice figure corresponding to current layer image data is projected out using proj ected bottom mode,
And it is exposed solidification；
Iv) judge subsequent whether also slice figure to be printed, if it exists slice figure to be printed, then workbench is vertical
Rise the height of a thickness, then repeats above-mentioned i) to iii) step, successively printed；It is to be printed if it does not exist to cut
Piece figure, then printing terminates, and completes the processing of ceramic false tooth.
4. the method for the 3D printing ceramic false tooth according to claim 1 suitable for Stereolithography, it is characterized in that: described
It further include that static pressure be sintered-is waited to 3D printing part after the 3D printing part for generating the ceramic false tooth after step 3)
Processing.
5. a kind of device of the 3D printing ceramic false tooth suitable for Stereolithography, it is characterized in that: including fixed frame and installation
For holding the resin storage tank of liquid, completing to project cured light sources project system, Z axis jacking system, stirring on fixed frame
Mechanism, liquid supply device, workbench and control system；Light sources project system is located at the lower section of resin storage tank, and Z axis jacking system is set
The rear side in resin storage tank is set, the left side of resin storage tank is arranged in rabbling mechanism, and the mixing part of rabbling mechanism probes into the vallecular cavity of resin storage tank,
The liquid outlet of liquid supply device is connected to resin storage tank, and the workbench is mounted on Z axis jacking system to go up and down along Z axis and move
It is dynamic；Liquid level sensor is set in resin storage tank, and electromagnetic valve is arranged in the liquid outlet of liquid supply device；Liquid level sensor, solenoid valve
Door, light sources project system, Z axis jacking system, rabbling mechanism, liquid supply device are connected with control system respectively；The control system
It unites for realizing the 3D printing ceramic false tooth of Stereolithography is suitable for as described in claim 1 to any one of claim 4
Method.
6. the device of the 3D printing ceramic false tooth according to claim 5 suitable for Stereolithography, it is characterized in that: described
The mixing part of rabbling mechanism is stirring scratch board, and stirring scratch board makees straight reciprocating with respect to resin storage tank in the horizontal plane.
7. the device of the 3D printing ceramic false tooth according to claim 5 suitable for Stereolithography, it is characterized in that: described
The mixing part of rabbling mechanism is ball-type stirring body, and ball-type stirring body rotates with respect to resin storage tank.
8. the device of the 3D printing ceramic false tooth according to claim 5 suitable for Stereolithography, it is characterized in that: described
Liquid supply device includes base-material cavity and toner cavity, and electromagnetism is respectively set in the liquid outlet for corresponding to the base-material cavity and toner cavity
Valve.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695268.0A CN106217882B (en) | 2016-08-19 | 2016-08-19 | The method and apparatus of 3D printing ceramic false tooth suitable for Stereolithography |
| CN201780045788.XA CN109641385B (en) | 2016-08-19 | 2017-08-17 | Method and device suitable for 3D printing of ceramic false tooth formed by photocuring |
| PCT/CN2017/097796 WO2018033109A1 (en) | 2016-08-19 | 2017-08-17 | Method and apparatus applicable in 3d printed ceramic denture formed by stereolithography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695268.0A CN106217882B (en) | 2016-08-19 | 2016-08-19 | The method and apparatus of 3D printing ceramic false tooth suitable for Stereolithography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106217882A CN106217882A (en) | 2016-12-14 |
| CN106217882B true CN106217882B (en) | 2019-03-15 |
Family
ID=57552633
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610695268.0A Active CN106217882B (en) | 2016-08-19 | 2016-08-19 | The method and apparatus of 3D printing ceramic false tooth suitable for Stereolithography |
| CN201780045788.XA Active CN109641385B (en) | 2016-08-19 | 2017-08-17 | Method and device suitable for 3D printing of ceramic false tooth formed by photocuring |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780045788.XA Active CN109641385B (en) | 2016-08-19 | 2017-08-17 | Method and device suitable for 3D printing of ceramic false tooth formed by photocuring |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN106217882B (en) |
| WO (1) | WO2018033109A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102539488B1 (en) * | 2020-06-29 | 2023-06-05 | 에이온 주식회사 | Method for generating artificial tooth by using 3d printing technique and 3d printer |
Families Citing this family (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217882B (en) * | 2016-08-19 | 2019-03-15 | 上海联泰科技股份有限公司 | The method and apparatus of 3D printing ceramic false tooth suitable for Stereolithography |
| CN108215173B (en) * | 2016-12-15 | 2025-04-04 | 上海普利生三维科技有限公司 | Light-curing three-dimensional printing device, method and system capable of automatic and continuous printing |
| CN106738869A (en) * | 2017-02-19 | 2017-05-31 | 荆门米丰信息科技有限公司 | A kind of high accuracy color three-dimensional printer and its forming method |
| CN106897574A (en) * | 2017-03-30 | 2017-06-27 | 深圳市家鸿口腔医疗股份有限公司 | A kind of Dental implantion guide plate immediate implant restorative procedure based on 3D printing |
| CN106863782A (en) * | 2017-03-30 | 2017-06-20 | 深圳市家鸿口腔医疗股份有限公司 | A kind of artificial tooth wax pattern DLP photocuring 3D printing methods |
| CN107150439B (en) * | 2017-05-15 | 2020-06-30 | 上海联泰科技股份有限公司 | Data processing method, 3D printing method and device |
| CN107139456B (en) * | 2017-05-17 | 2019-08-20 | 上海联泰科技股份有限公司 | Layered approach, the 3D printing method and apparatus of three-dimension object data |
| CN107471399B (en) * | 2017-09-15 | 2023-04-07 | 武汉因泰莱激光科技有限公司 | Novel laser 3D printer for printing ceramic material and control method |
| CN107669490B (en) * | 2017-09-26 | 2020-08-04 | 深圳市源华鑫科技有限公司 | Production method of ceramic tooth 3D printing in dental restoration industry |
| CN108175529A (en) * | 2017-12-25 | 2018-06-19 | 深圳市盛世智能装备有限公司 | A kind of quick device and method for preparing zirconium oxide artificial tooth |
| CN110181813A (en) * | 2018-02-23 | 2019-08-30 | 三纬国际立体列印科技股份有限公司 | Three-dimensional printing device |
| CN108656308A (en) * | 2018-06-28 | 2018-10-16 | 清紫生物科技（深圳）有限公司 | 3D printer applied to high solid phase ceramic slurry |
| WO2020014871A1 (en) * | 2018-07-17 | 2020-01-23 | 深圳摩方新材科技有限公司 | Dual initiation curing system for improving printing layer veins and preparation method therefor |
| WO2020037732A1 (en) * | 2018-08-24 | 2020-02-27 | 苏州中瑞智创三维科技股份有限公司 | Shape-adapting manufacturing method for three-dimensional printing using high-viscosity material |
| CN110920055A (en) * | 2018-09-04 | 2020-03-27 | 三纬国际立体列印科技股份有限公司 | 3D printing method to improve material injection efficiency |
| CN109394365B (en) * | 2018-12-17 | 2021-03-26 | 东莞理工学院 | A kind of preparation method of ceramic under-dental exposure type photocuring |
| CN109482822A (en) * | 2018-12-29 | 2019-03-19 | 宁夏共享机床辅机有限公司 | A kind of liquid material supply system applied to 3D printer |
| EP3708369B1 (en) * | 2019-03-11 | 2023-03-22 | DENTSPLY SIRONA Inc. | Stereolithography apparatus having a detection unit for optical adjustment and image modification |
| CN113306145B (en) * | 2019-08-01 | 2023-01-24 | 苏州铼赛智能科技有限公司 | Manufacturing method, system, 3D printing device and image processing method |
| CN111483141A (en) * | 2020-03-05 | 2020-08-04 | 上海莘临科技发展有限公司 | Self-adaptive adjustment coating system and method in 3D printing technology |
| CN112477114A (en) * | 2020-10-09 | 2021-03-12 | 广州黑格智造信息科技有限公司 | Automatic liquid adding method for 3D printing |
| WO2022110256A1 (en) * | 2020-11-29 | 2022-06-02 | 苏州铼赛智能科技有限公司 | Bottom exposure 3d printing device, control method and control system |
| CN112654490B (en) * | 2020-11-29 | 2022-06-21 | 苏州铼赛智能科技有限公司 | Bottom exposure 3D printing equipment, control method and control system |
| CN112519203A (en) * | 2020-12-02 | 2021-03-19 | 哈尔滨工业大学 | Efficient nondestructive supporting method for surface projection photocuring 3D printing based on gray level exposure |
| TWI759992B (en) * | 2020-12-07 | 2022-04-01 | 法藍瓷股份有限公司 | Three-dimensional lamination and color forming equipment and method for ceramic crowns |
| CN112810143B (en) * | 2020-12-31 | 2022-03-18 | 深圳新致美精密齿研有限公司 | 3D printing process and 3D printer for photosensitive resin false tooth |
| CN112618075B (en) * | 2021-01-09 | 2022-07-29 | 云南家红齿科技术股份有限公司 | High-palladium composite base material forming device for false tooth |
| CN112757621A (en) * | 2021-01-30 | 2021-05-07 | 山西增材制造研究院有限公司 | 3D printing material based on DLP printing, 3D printing product and printing method |
| CN114129290B (en) * | 2021-11-08 | 2024-04-26 | 南宁市美皓医疗器械有限公司 | Denture manufacturing process based on 3D printing technology |
| CN114770696A (en) * | 2022-05-14 | 2022-07-22 | 苏州大学 | Optimal design method for 3D dynamic molding of ceramic devices |
| CN114833355B (en) * | 2022-05-27 | 2023-06-30 | 浙江机电职业技术学院 | Metal 3D printing equipment with automatic powder supplementing function |
| CN115214146B (en) * | 2022-06-23 | 2024-10-22 | 先临三维科技股份有限公司 | 3D printing control method, device, electronic equipment and medium |
| CN115592946A (en) * | 2022-10-19 | 2023-01-13 | 深圳锐沣科技有限公司（Cn） | Photocuring three-dimensional inkjet printer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204183908U (en) * | 2014-10-08 | 2015-03-04 | 上海联泰三维科技有限公司 | End projection light solidifying quick forming device and automatic liquid supply device thereof |
| CN104943164A (en) * | 2014-03-25 | 2015-09-30 | 三纬国际立体列印科技股份有限公司 | Stirring mechanism and three-dimensional printer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT2986654T (en) * | 2013-04-18 | 2020-06-17 | Dentca Inc | Photo-curable resin compositions and method of using the same in three-dimensional printing for manufacturing artificial teeth and denture base |
| KR20160081354A (en) * | 2014-12-31 | 2016-07-08 | 주식회사 캐리마 | A stereolithographic 3D printer and A method for measuring and correcting deviation of radiation intensity therefor |
| CN104997643B (en) * | 2015-07-19 | 2019-03-08 | 谢宝军 | A kind of quick molding method for the production of full porcelain mouth mending material |
| CN105216330A (en) * | 2015-11-04 | 2016-01-06 | 上海联泰科技有限公司 | Based on 3D Method of printing and the 3D printing equipment of projection |
| CN106217882B (en) * | 2016-08-19 | 2019-03-15 | 上海联泰科技股份有限公司 | The method and apparatus of 3D printing ceramic false tooth suitable for Stereolithography |
-
2016
- 2016-08-19 CN CN201610695268.0A patent/CN106217882B/en active Active
-
2017
- 2017-08-17 CN CN201780045788.XA patent/CN109641385B/en active Active
- 2017-08-17 WO PCT/CN2017/097796 patent/WO2018033109A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943164A (en) * | 2014-03-25 | 2015-09-30 | 三纬国际立体列印科技股份有限公司 | Stirring mechanism and three-dimensional printer |
| CN204183908U (en) * | 2014-10-08 | 2015-03-04 | 上海联泰三维科技有限公司 | End projection light solidifying quick forming device and automatic liquid supply device thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102539488B1 (en) * | 2020-06-29 | 2023-06-05 | 에이온 주식회사 | Method for generating artificial tooth by using 3d printing technique and 3d printer |
| KR102539485B1 (en) * | 2020-06-29 | 2023-06-05 | 에이온 주식회사 | method and apparatus for determining slice color set in 3-dimension printing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106217882A (en) | 2016-12-14 |
| WO2018033109A1 (en) | 2018-02-22 |
| CN109641385B (en) | 2021-03-23 |
| CN109641385A (en) | 2019-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106217882B (en) | The method and apparatus of 3D printing ceramic false tooth suitable for Stereolithography | |
| US11577453B2 (en) | Additive manufacturing system and a method of additive manufacturing | |
| Kessler et al. | 3D printing in dentistry—State of the art | |
| CN107139456B (en) | Layered approach, the 3D printing method and apparatus of three-dimension object data | |
| Gebhardt et al. | Additive manufacturing: 3D printing for prototyping and manufacturing | |
| US9192456B2 (en) | Denture and method and apparatus of making same | |
| EP2224874B1 (en) | Freeform fabrication system for producing a three-dimensional object | |
| CN113306145B (en) | Manufacturing method, system, 3D printing device and image processing method | |
| AU2017305944B2 (en) | Device and method for progressively building up an object from a light hardenable material | |
| CN207273889U (en) | 3D printing equipment and the container for 3D printing equipment | |
| CN104802414A (en) | Three-dimensional printing device and three-dimensional printing method | |
| US20240252291A1 (en) | Method and system for making dental prosthesis | |
| CN107669490A (en) | A kind of production method of the tooth 3D printing in gear division reparation industry of making pottery | |
| CN109998716A (en) | A kind of 3 D-printing formula preparation method of tooth-implanting upper crown | |
| EP3478221B1 (en) | Method for the production of a dental article | |
| Sergis et al. | Development of a portable stereolithography device for computer numerical control machining centres | |
| Schunemann | Paste deposition modelling, deconstructing the additive manufacturing process: Development of novel multi-material tools and techniques for craft practitioners | |
| PROTOTYPING | Journal Homepage:-www. journalijar. com |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method and device of 3D printed ceramic denture suitable for light curing molding Effective date of registration: 20220629 Granted publication date: 20190315 Pledgee: Bank of Communications Ltd. Shanghai Xuhui sub branch Pledgor: SHANGHAI UNION TECHNOLOGY Corp. Registration number: Y2022980009387 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230529 Granted publication date: 20190315 Pledgee: Bank of Communications Ltd. Shanghai Xuhui sub branch Pledgor: SHANGHAI UNION TECHNOLOGY Corp. Registration number: Y2022980009387 |