CN109676747A - A kind of more material ceramics photocuring print system mechanisms and crude green body preparation method - Google Patents

A kind of more material ceramics photocuring print system mechanisms and crude green body preparation method Download PDF

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Publication number
CN109676747A
CN109676747A CN201910121452.8A CN201910121452A CN109676747A CN 109676747 A CN109676747 A CN 109676747A CN 201910121452 A CN201910121452 A CN 201910121452A CN 109676747 A CN109676747 A CN 109676747A
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CN
China
Prior art keywords
slurry
print
molding
scraping
crude green
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CN201910121452.8A
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Chinese (zh)
Inventor
顾海
孙健华
张捷
姜杰
李彬
黄天成
陈浩
徐晖
钱成
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南通理工学院
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Priority to CN201910121452.8A priority Critical patent/CN109676747A/en
Publication of CN109676747A publication Critical patent/CN109676747A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/001Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F15/00Accessories for mixers ; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F15/00123Controlling; Testing; Measuring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F7/00Mixers with rotary stirring devices in fixed receptacles, i.e. movement of the receptacle not being meant to effect the mixing; Kneaders
    • B01F7/16Mixers with rotary stirring devices in fixed receptacles, i.e. movement of the receptacle not being meant to effect the mixing; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F7/24Mixers with rotary stirring devices in fixed receptacles, i.e. movement of the receptacle not being meant to effect the mixing; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00Processes of additive manufacturing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE 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
    • B33Y30/00Apparatus for additive manufacturing; Details thereof or accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00Data acquisition or data processing for additive manufacturing

Abstract

The invention discloses a kind of more material ceramics photocuring print system mechanisms and crude green body preparation methods, including photocuring print system, molding equipment, mixing plant, clamping device, scraping device, mixing plant work in photocuring print system, 1~2h is stirred at 30~35 DEG C, mixing speed is 60~100r/min, it is combined using one-way/two-way agitating mode, guarantee constant and suitable operating temperature required when polymerization reaction occurs for photosensitive resin, a large amount of consumption of physical efficiency when removing artificial stirring from, and guarantee slurry agitation quality, keep slurry more uniform, the movement that extrusion device group squeezes out slurry is realized by negative pressure pump, the slurry of different pipeline unlike materials, the extrusion adjustable angle of extrusion device group, coordinate with the active position of scraping device, silicon rubber heats ring side installation temperature and passes Sensor, silicon rubber heating ring and temperature sensor are connected with digital display thermostat controller, make to form the slurry temperature in pond and are between 30~35 DEG C, improve photosensitive resin and the speed of polymerization reaction and the ratio of briquetting of crude green body occurs.

Description

A kind of more material ceramics photocuring print system mechanisms and crude green body preparation method

Technical field

The present invention relates to 3D printing molding fabrication techniques field, specially a kind of more material ceramics photocuring print system machines Structure and crude green body preparation method.

Background technique

3D printing proposes a Layered manufacturing from forming principle, is successively superimposed molding a whole new mind mode, i.e., will CAD (CAD), computer-aided manufacturing (CAM), computer numerical control (CNC) (CNC), laser, elaborate servo driving It is integrated in one with advanced technologies such as new materials, according to the workpiece Three Dimensional Design Model constituted on computer, layering is carried out to it and is cut Piece obtains the two-dimensional silhouette information of each layer cross section, and the moulded head of 3D printing equipment is according to these profile informations in control system Under control, selectively solidifies or cut moulding material from level to level, form each cross section profile, and be gradually superimposed into three Tie up workpiece.3D printing technique can be automatic, quick, direct and accurately converts natural pattern for designing a model in computer Type, it might even be possible to direct manufacturing parts or mold, to effectively shorten the process-cycle, improve product quality and reduce about 50% Manufacturing expense.

Ceramic material has good chemical stability, high-intensitive, high rigidity, low-density, high temperature resistant, corrosion-resistant etc. many excellent Characteristic can be used in industries such as aerospace, automobile, biologies.3D printing ceramic energy saves the whole of traditional-handwork plastotype molding A process completes the three-dimensional structure that traditional ceramics industry cannot achieve with higher precision, has shaping speed fast, can print multiple The advantages that miscellaneous component and personalized product at low cost, and performance is stablized, and has the characteristics that sterile, can be used for preparing light connector Small, complex-shaped, the with high accuracy production of ceramic contact pin, electronic ceramic device, ceramic foam filter part, ceramic tooth equidimension Product, therefore, 3D printing ceramic have become an important increasing material research direction.

Currently, ceramic molding can substantially be summarized as three kinds of molding modes.One is extrusion types, and moulded head is according to every The two-dimensional silhouette information of layer cross section, according to the path planned, the slurry that extruded ceramic powder and binder are mixed into, and accumulate At three-dimensional article, it is similar to building printing;One is molded through three-dimensional printing, equably spread ceramic powder in working bin first End, then the binder of liquid is sprayed on the specified region on bisque by specified path with spray head, with working bin decline by Layer powdering and spraying adhesive remove extra dusty material, required product prototype can be obtained after to be bonded dose of solidification; Another kind is Stereolithography, using the mixed slurry of ceramic powder and photosensitive resin as rapidoprint, under the control of the computer, UV laser beam carries out point by point scanning by the track of each layering cross section profile, and it is anti-that the thin resin layer being scanned in area generates photopolymerization Should after solidify, form a thin layer section of product.After each layer of solidification finishes, the height of the mobile thickness of workbench Degree, is then then covered with one layer of new photosensitive resin in cured resin surface before to carry out scan round and solidification.So Repeatedly, every one layer newly that formed adheres in preceding layer, the production until completing part.In above-mentioned three kinds of molding modes, squeeze Type forming principle is simple out, it is easy to accomplish, it is especially suitable for the ceramics printing of high solids content, but the extrusion output of ceramic paste is difficult to It accurately controlling, step effect is obvious, and cause surface accuracy low, blank bad mechanical property after molding, and Complex Parts not easy to manufacture.Three When dimension printing molding, production support is not needed, but partial size to ceramic powder material and mobility etc. have higher requirements, blank Mechanical performance it is poor, need unsticking, sintering etc. to post-process, and surface quality is not high, is slightly better than extrusion type.Using being light-cured into Type can print complicated ceramic member and significantly improve blank surface precision, and blank mechanical performance is better than extrusion type and three dimensional printing Type.Stereolithography is lower than three dimensional printing type to the characteristic requirements of ceramic powder material, and cost is relatively low.It is disadvantageous in that, light The solid concentration of ceramic powder is normally no higher than 50% in solidification, causes blank by the post-processing post-shrinkage ratio such as unsticking and sintering It is larger.Therefore, the volume accounting of ceramic powder when how to improve photocuring, and keep higher ratio of briquetting and preferable molding matter Amount is the current main problem for solving the printing of photocuring ceramics.

A kind of light-cured resin base Ceramic Composite material is disclosed in CN201711473400.4 Chinese invention patent application The degreasing method of material and ceramic idiosome.By optimization design resin system, that is, the mode of material composition is improved, so that ceramic powder The percent by volume that ceramic composite can be accounted for is 30-80%.Wherein, diameter of particle is between 0.1-25 μm.Print green body Dimensional accuracy keep preferably, and print procedure be not easy with platform be detached from, ensure that ratio of briquetting to a certain extent.And it discloses de- Rouge technique carries out degreasing by the temperature that four-stage is incremented by step by step.But the patent is only mentioned from the improved angle of photosensitive resin High solid loading will be subject to certain restrictions, and actually will also be influenced by equipment, printing technology parameter.

A kind of novel ceramic based on 3D printing technique is disclosed in CN201810158365.5 Chinese invention patent application Porcelain molding equipment.Equipment described in the patent belongs to the application of extrusion type technique, including rack, master controller, three-dimensional motion mould group, The mechanisms such as feeding device and extrusion device may be implemented the abnormal shape that traditional ceramics billet withdrawing technology is difficult to realize, be mainly used in text Change intention field.The patent existing defects have: the molding product surface of extrusion way and dimensional accuracy are limited, are driven using gas source The extrusion of slurry, speed control is bad to cause extrusion output uneven;Increasing pressure with gas source pipeline simultaneously also has loss, also can shadow Ring the size of extrusion output.

The authorization of CN201610164484.2 Chinese invention patent authorizes a kind of preparation method of silicon carbide ceramic part. The patent utilizes controllable UV Line beam, strafes the slurry that ceramic powders are mixed with organic adhesive and silicon carbide ceramic part is made Crude green body, then crude green body is subjected to low-temperature defatted processing and hip treatment, obtain fine and close silicon carbide ceramic part.The patent is deposited Have in defect: in the preparation process of organic adhesive urethane acrylate, intermediate product-NCO has larger toxicity, and there are one Determine security risk;The consistency of product is improved using hot isostatic apparatus, so that processing cost increases, limits popularization and application; In crude green body manufacture, the spot scan printing technology of use significantly limits production if hot spot movement speed is only 1mm/min The raising of efficiency.

Summary of the invention

The purpose of the present invention is to provide a kind of more material ceramics photocuring print system mechanisms and crude green body preparation method, with Solve the problems mentioned above in the background art.

To achieve the above object, the invention provides the following technical scheme: a kind of more material ceramics photocuring print system machines Structure and crude green body preparation method, including photocuring print system, molding equipment, mixing plant, clamping device, scraping device are described Photocuring print system is equipped with molding equipment and mixing plant, and fluid-conveying pipe is equipped between molding equipment and mixing plant Road, the molding equipment are equipped with board, and one end end of board is equipped with digital display thermostat controller, molding equipment controller, electricity Source, the top of board are equipped with molding pond, and the outside in the molding pond is equipped with scraping device and extrusion device group, the molding pond The other side is equipped with Z axis mobile mechanism, and the bottom end of Z axis mobile mechanism is fixed on the one side edge center of board, the stirring One end of equipment is equipped with slurry agitation controller close to bottom, and the top of the molding equipment is equipped with slurry material agitating pool, the slurry Expect that the side of stirring pool is equipped with heating rod.

Preferably, the inside of the molding equipment is equipped with silicon rubber and heats ring, and silicon rubber heating ring is mounted on molding pond Underface, the inside that silicon rubber heats ring are equipped with ultraviolet laser, and the side of the silicon rubber heating ring is equipped with temperature sensing Device, the other side that silicon rubber heats ring are equipped with transmission mechanism, and the side of the transmission mechanism is equipped with stepper motor, stepper motor with Transmission mechanism connection, silicon rubber heating ring and temperature sensor are connected with digital display thermostat controller.

Preferably, the Z axis mobile mechanism is equipped with column, and the side center of column is equipped with sliding rail, the Z axis moving machine The side of structure is equipped with clamping device, is equipped with stepper motor and driving device in the Z axis mobile mechanism, the clamping device It is equipped with shaped platform below one end, the shaped platform includes lock-screw, levelling bolt, spring, level meter, shaping base, The shaped platform is fixed at gripping device front end notch by lock-screw, 4 levelling bolts and 4 springs, 2 levels Instrument is distributed in 125 two sides of shaping base and X-axis, Y-axis are parallel.

Preferably, the inside of the slurry material agitating pool is equipped with spiral mixing rod, and the top of the spiral mixing rod, which is equipped with, to be stirred Stepper motor is mixed, stirs and is fixedly connected between the lower section of stepper motor and spiral mixing rod, the lower section of the stirring stepper motor Slurry material agitating pool lid is equipped between spiral mixing rod.

Preferably, the scraping device is equipped with and scrapes plain block, and the top for scraping plain block is equipped with fixed connecting rod, described to scrape plain block Top and fixed connecting rod between be fixedly connected by lock-screw B, under the top and fixed connecting rod for scraping plain block Side is fixedly connected, and is set above fixed connecting rod there are two micrometer caliper, and micrometer caliper is fixed on the front end of scraping device, Described scrape is equipped with tightening spring between the two sides of plain block and fixed connecting rod, tighten the top of spring and the following table of fixed connecting rod Face is fixedly connected, and the bottom end for tightening spring is fixedly connected with plain block is scraped, and the bottom for scraping plain block is equipped with scraper blade, the scraper Piece is fixedly connected with scraping by lock-screw A between plain block.

Preferably, the shaping base bottom surface is equipped with meshed groove, groove depth 1mm, 1~2mm of groove width.

Preferably, the whipping temp of the mixing plant is set as 30~35 DEG C, and mixing time is 1~2h, mixing speed For 60~100r/min, it is stirred using the unidirectional agitating mode with two-way combination.

Preferably, the clamping device is connected to Z axis mobile mechanism by ball-screw.

Preferably, a kind of more material ceramics photocuring print system mechanisms and crude green body preparation method, application method include Following steps:

A, the mixing material of configuration ceramic powders and photosensitive resin, powder body material and photosensitive tree are required according to volume ratio first Volume ratio 1:2~3:4 of rouge;

B, slurry material agitating pool, installation stirring stepper motor and auger then is added in dusty material and photosensitive resin Stick, stirs stepper motor and heating rod is connected with slurry agitation controller, carries out parameter setting to slurry agitation controller 25 And stirring operation, until stirring terminates;

C, the uniformly mixed slurry of the agitated equipment of molding equipment is delivered on molding equipment by slurry transport lines Extrusion device group carries out three-dimensional data modeling and data processing to printing entity;

D, the good print routine of slicing treatment is uploaded to molding equipment, temperature controller sets print temperature, passes through into Type device controller starts print routine, first prints the base supports of part, then prints the entity part of part, until part is thick Base printing is completed.

Compared with prior art, the beneficial effects of the present invention are:

(1) when mixing plant 2 works, a length of 1~2h, mixing speed are when whipping temp is set as 30~35 DEG C, stirring 60~100r/min, agitating mode are one-way/two-way, be ensure that required constant and suitable when polymerization reaction occurs for photosensitive resin Operating temperature, a large amount of consumption of physical efficiency when eliminating artificial stirring, and ensure that slurry agitation quality, so that slurry is more equal Even, ceramic powders include but is not limited to aluminium oxide, zirconium oxide, aluminium nitride, silicon carbide, yttrium oxide, magnesia, silica, oxidation One or more of calcium, bismuth oxide, hydroxyapatite and tricalcium phosphate can also be one or more metal powders, such as Acieral, ferrous alloy, nickel-base alloy, titanium alloy and copper alloy etc., material is a variety of, adapts to the needs of different application, Volume ratio 1:2~3:4 of powder body material and photosensitive resin realizes the preparation of powder body material high solids content, powder body material volume Score is up to 75%;

(2) movement that extrusion device group squeezes out slurry is realized by negative pressure pump, the slurry of different pipeline unlike materials. The extrusion adjustable angle of extrusion device group is coordinated with the active position of scraping device, and slurry does not need to be paved with entire molding pond Entire bottom surface ensures that print area slurry is sufficient, saves slurry supply, cost has been saved, especially to valuable powder material Expect that meaning is bigger;

(3) extrusion device group print routine as needed can only squeeze out a type of slurry to print some part thick Base can also squeeze out a plurality of types of slurries stage by stage and print some part crude green body, and more material printings and heterogeneous material may be implemented The printing of material extends the application of printout;

(4) micrometer caliper can not only adjust scraper blade by left or right rotation and form bottom of pond portion in scraping device Flatness, can also accurately adjust amount of movement by the scale on micrometer caliper, accuracy 0.001mm, on scraping device 2 tightening springs be constantly in tensioning state, cooperate 4 lock-screw B so that leveling after state keep it is more longlasting, scrape Blade is fixed on scraper block bottom by 4 lock-screw A30, can dismantle, and easy cleaning residual slurry and replacement abrasion are scraped Blade;

(5) shaped platform need to do the up and down motion along Z-direction, 4 levelling bolts and 4 bullets in Stereolithography Spring combination, for adjusting the flatness of shaping base, 2 level meters are distributed in shaping base two sides, parallel with X-axis, Y-axis, The flatness that shaping base can intuitively be observed, facilitates Levelling operation, it is ensured that accuracy when flatness adjusts.

Detailed description of the invention

Fig. 1 is photocuring print system structural schematic diagram of the present invention;

Fig. 2 is molding equipment inside top figure of the present invention;

Fig. 3 is shaped platform overall structure diagram of the present invention;

Fig. 4 is shaping base structural schematic diagram of the present invention;

Fig. 5 is scraping device structural schematic diagram of the present invention.

In figure: 1, molding equipment;2, mixing plant;3, scraping device;4, pond is formed;5, shaped platform;6, clamping device; 7, Z axis mobile mechanism;8, housing;9, digital display thermostat controller;10, extrusion device group;11, molding equipment controller;12, electric Source;13, slurry transport lines;14, heating rod;15, slurry material agitating pool;16, stepper motor is stirred;17, spiral mixing rod;18, Slurry agitation controller;19, temperature sensor;20, silicon rubber heats ring;21, transmission mechanism;22, stepper motor;23, ultraviolet Light laser;24, lock-screw;25, levelling bolt;26, spring;27, level meter;28, shaping base;29, scraper blade;30, Lock-screw A;31, plain block is scraped;32, spring is tightened;33, lock-screw B;34, micrometer caliper;35, photocuring print system.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Please refer to Fig. 1-5, the present invention provides a kind of technical solution: a kind of more material ceramics photocuring print system mechanisms and Crude green body preparation method, including photocuring print system 35, molding equipment 1, mixing plant 2, clamping device 6, scraping device 3, light Solidify print system 35 and be equipped with molding equipment 1 and mixing plant 2, slurry is equipped between molding equipment 1 and mixing plant 2 and is conveyed Pipeline 13, molding equipment 1 are equipped with board, and one end end of board is equipped with digital display thermostat controller 9, molding equipment controller 11, power supply 12, the top of board is equipped with molding pond 4, and the outside in molding pond 4 is equipped with scraping device 3 and extrusion device group, forms pond 4 other side is equipped with Z axis mobile mechanism 7, and the bottom end of Z axis mobile mechanism 7 is fixed on the one side edge center of board, stirring One end of equipment 2 is equipped with slurry agitation controller 18 close to bottom, and the top of molding equipment 1 is equipped with slurry material agitating pool 15, slurry The side of stirring pool 15 is equipped with heating rod 14.

The mixing material of configuration ceramic powders and photosensitive resin is required according to volume ratio first, ceramic powders include but unlimited In aluminium oxide, zirconium oxide, aluminium nitride, silicon carbide, yttrium oxide, magnesia, silica, calcium oxide, bismuth oxide, hydroxyapatite and One or more of tricalcium phosphate can also be one or more metal powders, such as acieral, ferrous alloy, Ni-based Volume ratio 1:2~3:4 of alloy, titanium alloy and copper alloy etc., powder body material and photosensitive resin, realizes powder body material large arch dam The preparation of amount, powder body material volume fraction are up to 75%.

Then, slurry material agitating pool 15 is added in dusty material and photosensitive resin, installation stirring stepper motor 16 and spiral are stirred Mix stick 17, stir stepper motor 16 and heating rod 14 is connected with slurry agitation controller 18, to slurry agitation controller, 18 into The setting that row includes whipping temp, stirs duration, mixing speed, agitating mode, until stirring terminates.

For molding equipment 1 mainly by molding equipment 1, extrusion device group forms pond 4, scraping device 3, shaped platform 5, clamping Mechanism 6, the equal composition of Z axis mobile mechanism 7, the uniformly mixed slurry of agitated equipment 2 are delivered to by slurry transport lines 13 Extrusion device group 10 in type equipment 1 carries out at three-dimensional data modeling and data printing entity when molding equipment 1 works Reason carries out slicing treatment using special Slice Software, threedimensional model is converted into a series of 2-D datas, starting device power supply 12, the good print routine of slicing treatment is uploaded to by molding equipment 1 by computer data line or storage card, installs and adjusts and scrape Leveling device 3 and extrusion device group 10, the movement that extrusion device group 10 squeezes out slurry are realized that different pipelines are not by negative pressure pump The slurry of same material, the extrusion adjustable angle of extrusion device group 10 are coordinated with the active position of scraping device 3, and slurry does not need The entire bottom surface for being paved with entire molding pond 4 ensures that print area slurry is sufficient, saves slurry supply, saved at This, it is especially bigger to valuable powder body material meaning.

Housing 8 is covered, print temperature is set by digital display thermostat controller 9, is started by molding equipment controller 11 Print routine first prints the base supports of part, then prints the entity part of part, until the printing of part crude green body is completed, into When row part crude green body prints, when printing n-th layer, 10 extrusion mixing slurry of extrusion device group, molding pond 4 rotation 2~3 Circle, scraping device 3 strike off slurry, and shaped platform 5 is displaced downwardly to distance molding 4 0.1~0.3mm of bottom of pond by Z axis mobile mechanism 7 Place, ultraviolet laser 23 is scanned cure pastes according to the regulation path of n-th layer, and forms on shaped platform 5, printing Shaped platform 5 moves up after complete, repeats the above process, and prints (n+1)th layer, in cycles, until the printing of entire part crude green body is completed, Extrusion device group 10, stepper motor 22, ultraviolet laser 23, shaped platform 5 are connected with molding equipment controller 11, molding Pond 4 is bolted on shaped platform 5, can be dismantled, and bottom is transparent medium, and ultraviolet light is facilitated to penetrate scanning.

Shaped platform 5 need to do the up and down motion along Z-direction, 4 levelling bolt 25 and 4 bullets in Stereolithography Spring 26 combines, and for adjusting the flatness of shaping base, 2 level meters 27 are distributed in shaping base two sides, flat with X-axis, Y-axis Row, can intuitively observe the flatness of shaping base, facilitate Levelling operation, it is ensured that accuracy when flatness adjusts.

Shaping base material is rubber or metal, and there are the meshed groove through mechanical Milling Process, groove depth 1mm, groove width 1 in bottom surface ~2mm, the adhesive force of part base supports when substantially increasing Stereolithography, prevent part crude green body with Forming Quality gradually Increase and with shaping base be detached from, the quality and high solids content part crude green body for effectively increasing printer print successfully key because One of element.

1 inside of molding equipment mainly includes silicon rubber heating ring 20, temperature sensor 19, stepper motor 22 and transmission mechanism 21 etc., for driving molding pond 4 to move in a circle, cooperation scraping device 3 strikes off extrusion for stepper motor 22 and transmission mechanism 21 Mixed slurry, silicon rubber heat ring 20 with 3M tape-stripping in molding 4 bottom outside of pond, temperature are installed at 1~2cm of linear distance Sensor 19 is spent, silicon rubber heating ring 20 and temperature sensor 19 are connected with digital display thermostat controller 9, in print procedure The setting of forming temperature.

Silicon rubber heats ring 20 with 3M tape-stripping in molding 4 bottom outside of pond, and temperature is installed at 1~2cm of linear distance Sensor 19 is spent, silicon rubber heating ring 20 and temperature sensor 19 are connected with digital display thermostat controller 9, and heating temperature 30 is arranged ~35 DEG C, the power supply of silicon rubber heating ring 20 is switched off when temperature sensor 19 detects that temperature is increased beyond maximum set value Power supply, temperature decline therewith, when temperature sensor 19 detects that temperature drop-out value is more than 2 DEG C, are then turned on silicon rubber heating ring 20 power supply makes molding pond 4 maintain steady temperature always, meanwhile, after housing 8 is closed, when ensure that Stereolithography Opposite confined space so that the slurry temperature in molding pond 11 is between 30~35 DEG C, improve photosensitive resin occur it is poly- Close the speed of reaction and the ratio of briquetting of crude green body.

Shaped platform 5 is fixed in Z axis mobile mechanism 7 by clamping device 6, and clamping device 6 is coupled by ball-screw In being equipped with stepper motor 22 and driving device in Z axis mobile mechanism 7, Z axis mobile mechanism 7, make to move down on the work of shaped platform 5 Dynamic, shaped platform 5 mainly includes lock-screw 24, levelling bolt 25, spring 26, level meter 27, shaping base 28 etc., and molding is flat Platform 5 is fixed at 6 front end notch of clamping device by lock-screw 24, and 4 levelling bolt 25 and 4 springs 26 are for being adjusted to The flatness of type pedestal 28,2 level meters 27 are distributed in 28 two sides of shaping base, parallel with X-axis, Y-axis, for observing molding There are meshed groove in the flatness of pedestal 28,28 bottom surface of shaping base, and groove depth 1mm, 1~2mm of groove width are used for cure pastes.

Scraping device 3 is equipped with and scrapes plain block 31, and the top for scraping plain block 31 is equipped with fixed connecting rod, scrape the top of plain block 31 with It is fixedly connected between fixed connecting rod by lock-screw B33, the lower section on the top and fixed connecting rod of scraping plain block 31 is fixed to be connected It connects, is set above fixed connecting rod there are two micrometer caliper 34, micrometer caliper 34 is fixed on the front end of scraping device, strikes off It is equipped with tightening spring 32 between the two sides and fixed connecting rod of block 31, tightens the top of spring 32 and the lower surface of fixed connecting rod Be fixedly connected, tightening spring 32 bottom end be fixedly connected with plain block 31 is scraped, 2 tighten spring 32 both ends respectively with scraping device 3 front ends and second step surface for scraping plain block 31 are fixed, and tensioning state is in, and the bottom for scraping plain block 31 is equipped with scraper blade 29, are scraped Blade 29 is fixedly connected with scraping by lock-screw A30 between plain block 31.

Present apparatus design rationally, realizes the preparation of powder body material high solids content, and powder body material volume fraction is up to 75%, The entire bottom surface that slurry does not need to be paved with entire molding pond 11 ensures that print area slurry is sufficient, saves slurry confession It answers, has saved cost, the printing of more material printings and dissimilar materials may be implemented, extend the application of printout.

A kind of more material ceramics photocuring print system mechanisms and crude green body preparation method, application method include following step It is rapid:

A, the mixing material of configuration ceramic powders and photosensitive resin, powder body material and photosensitive tree are required according to volume ratio first Volume ratio 1:2~3:4 of rouge;

B, slurry material agitating pool, installation stirring stepper motor and auger then is added in dusty material and photosensitive resin Stick, stirs stepper motor and heating rod is connected with slurry agitation controller, carries out parameter setting to slurry agitation controller 25 And stirring operation, until stirring terminates;

C, the uniformly mixed slurry of the agitated equipment of molding equipment is delivered on molding equipment by slurry transport lines Extrusion device group carries out three-dimensional data modeling and data processing to printing entity;

D, the good print routine of slicing treatment is uploaded to molding equipment, temperature controller sets print temperature, passes through into Type device controller starts print routine, first prints the base supports of part, then prints the entity part of part, until part is thick Base printing is completed.

The beneficial effects of the present invention are:

(1) when mixing plant 2 works, a length of 1~2h, mixing speed are when whipping temp is set as 30~35 DEG C, stirring 60~100r/min, agitating mode are one-way/two-way, be ensure that required constant and suitable when polymerization reaction occurs for photosensitive resin Operating temperature, a large amount of consumption of physical efficiency when eliminating artificial stirring, and ensure that slurry agitation quality, so that slurry is more equal Even, ceramic powders include but is not limited to aluminium oxide, zirconium oxide, aluminium nitride, silicon carbide, yttrium oxide, magnesia, silica, oxidation One or more of calcium, bismuth oxide, hydroxyapatite and tricalcium phosphate can also be one or more metal powders, such as Acieral, ferrous alloy, nickel-base alloy, titanium alloy and copper alloy etc., material is a variety of, adapts to the needs of different application, Volume ratio 1:2~3:4 of powder body material and photosensitive resin realizes the preparation of powder body material high solids content, powder body material volume Score is up to 75%;

(2) movement that extrusion device group squeezes out slurry is realized by negative pressure pump, the slurry of different pipeline unlike materials. The extrusion adjustable angle of extrusion device group is coordinated with the active position of scraping device, and slurry does not need to be paved with entire molding pond Entire bottom surface ensures that print area slurry is sufficient, saves slurry supply, cost has been saved, especially to valuable powder material Expect that meaning is bigger;

(3) extrusion device group print routine as needed can only squeeze out a type of slurry to print some part thick Base can also squeeze out a plurality of types of slurries stage by stage and print some part crude green body, and more material printings and heterogeneous material may be implemented The printing of material extends the application of printout;

(4) micrometer caliper can not only adjust scraper blade by left or right rotation and form bottom of pond portion in scraping device Flatness, can also accurately adjust amount of movement by the scale on micrometer caliper, accuracy 0.001mm, on scraping device 2 tightening springs be constantly in tensioning state, cooperate 4 lock-screw B so that leveling after state keep it is more longlasting, scrape Blade is fixed on scraper block bottom by 4 lock-screw A30, can dismantle, and easy cleaning residual slurry and replacement abrasion are scraped Blade;

(5) shaped platform need to do the up and down motion along Z-direction, 4 levelling bolts and 4 bullets in Stereolithography Spring combination, for adjusting the flatness of shaping base, 2 level meters are distributed in shaping base two sides, parallel with X-axis, Y-axis, The flatness that shaping base can intuitively be observed, facilitates Levelling operation, it is ensured that accuracy when flatness adjusts.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (9)

1. a kind of more material ceramics photocuring print system mechanisms and crude green body preparation method, including photocuring print system (35), Molding equipment (1), mixing plant (2), clamping device (6), scraping device (3), it is characterised in that: the photocuring print system (35) it is equipped with molding equipment (1) and mixing plant (2), fluid-conveying pipe is equipped between molding equipment (1) and mixing plant (2) Road (13), the molding equipment (1) are equipped with board, and one end end of board is equipped with digital display thermostat controller (9), molding equipment Controller (11), power supply (12), the top of board are equipped with molding pond (4), and the outside of molding pond (4) is equipped with scraping device (3) with extrusion device group, the other side of molding pond (4) is equipped with Z axis mobile mechanism (7), the bottom end of Z axis mobile mechanism (7) It is fixed on the one side edge center of board, one end of the mixing plant (2) is equipped with slurry agitation controller close to bottom (18), the top of the molding equipment (1) is equipped with slurry material agitating pool (15), and the side of the slurry material agitating pool (15) is equipped with heating Stick (14).
2. a kind of more material ceramics photocuring print system mechanisms according to claim 1 and crude green body preparation method, special Sign is: the inside of the molding equipment (1) is equipped with silicon rubber heating ring (20), and silicon rubber heating ring (20) is mounted on molding pond (4) underface, the inside that silicon rubber heats ring (20) are equipped with ultraviolet laser (23), silicon rubber heating ring (20) Side is equipped with temperature sensor (19), and the other side that silicon rubber heats ring (20) is equipped with transmission mechanism (21), the transmission mechanism (21) side is equipped with stepper motor (22), and stepper motor (22) connect with transmission mechanism (21), silicon rubber heating ring (20) and Temperature sensor (19) is connected with digital display thermostat controller (9).
3. a kind of more material ceramics photocuring print system mechanisms according to claim 1 and crude green body preparation method, special Sign is: the Z axis mobile mechanism (7) is equipped with column, and the side center of column is equipped with sliding rail, the Z axis mobile mechanism (7) Side be equipped with clamping device (6), stepper motor (22) and driving device, the folder are installed in the Z axis mobile mechanism (7) It holds and is equipped with shaped platform (5) below one end of mechanism (6), the shaped platform (5) includes lock-screw (24), levelling bolt (25), spring (26), level meter (27), shaping base (28), the shaped platform (5) are fixed on folder by lock-screw (24) It holds at the notch of mechanism (6) front end, 4 levelling bolts and 4 springs, 2 level meters are distributed in 125 two sides of shaping base and X Axis, Y-axis are parallel.
4. a kind of more material ceramics photocuring print system mechanisms according to claim 1 and crude green body preparation method, special Sign is: the inside of the slurry material agitating pool (15) is equipped with spiral mixing rod (17), sets above the spiral mixing rod (17) Have stirring stepper motor (16), stirs and be fixedly connected between the lower section and spiral mixing rod (17) of stepper motor (16), it is described to stir It mixes and is equipped with slurry material agitating pool lid between the lower section of stepper motor (16) and spiral mixing rod (17).
5. a kind of more material ceramics photocuring print system mechanisms according to claim 1 and crude green body preparation method, special Sign is: the scraping device (3) is equipped with and scrapes plain block (31), and the top for scraping plain block (31) is equipped with fixed connecting rod, described to scrape It is fixedly connected between the top and fixed connecting rod of plain block (31) by lock-screw B (33), the top for scraping plain block (31) It is fixedly connected, is set above fixed connecting rod there are two micrometer caliper (34), micrometer caliper with below fixed connecting rod (34) it is fixed on the front end of scraping device, tightening spring is equipped between the two sides and fixed connecting rod for scraping plain block (31) (32), tighten spring (32) top be fixedly connected with the lower surface of fixed connecting rod, tighten spring (32) bottom end with strike off Block (31) is fixedly connected, and the bottom for scraping plain block (31) is equipped with scraper blade (29), the scraper blade (29) and scrapes plain block (31) Between be fixedly connected by lock-screw A (30).
6. a kind of more material ceramics photocuring print system mechanisms according to claim 3 and crude green body preparation method, special Sign is: shaping base bottom (28) face is equipped with meshed groove, groove depth 1mm, 1~2mm of groove width.
7. a kind of more material ceramics photocuring print system mechanisms according to claim 1 and crude green body preparation method, special Sign is: the whipping temp of the mixing plant (2) is set as 30~35 DEG C, and mixing time is 1~2h, and mixing speed is 60~ 100r/min is stirred using the unidirectional agitating mode with two-way combination.
8. a kind of more material ceramics photocuring print system mechanisms according to claim 1 or 3 and crude green body preparation method, Be characterized in that: the clamping device (6) is connected to Z axis mobile mechanism (7) by ball-screw.
9. realizing a kind of more material ceramics photocuring print system mechanisms described in claim 1 and crude green body preparation method, make With method the following steps are included:
A, the mixing material of configuration ceramic powders and photosensitive resin is required according to volume ratio first, powder body material and photosensitive resin Volume ratio 1:2~3:4;
B, slurry material agitating pool (4) then are added in dusty material and photosensitive resin, installation stirring stepper motor (16) and spiral are stirred It mixes stick (17), stirs stepper motor (16) and heating rod (14) is connected with slurry agitation controller (18), to slurry agitation control Device (18) processed carries out parameter setting and stirring operation, until stirring terminates;
C, the uniformly mixed slurry of molding equipment (4) agitated equipment (2) is delivered to molding by slurry transport lines (13) and sets Extrusion device group on standby (1) carries out three-dimensional data modeling and data processing to printing entity;
D, the good print routine of slicing treatment is uploaded to molding equipment (1), temperature controller sets print temperature, passes through molding Device controller (11) starts print routine, first prints the base supports of part, then prints the entity part of part, until part Crude green body printing is completed.
CN201910121452.8A 2019-02-19 2019-02-19 A kind of more material ceramics photocuring print system mechanisms and crude green body preparation method CN109676747A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105413967A (en) * 2015-12-25 2016-03-23 齐齐哈尔大学 Intelligent fast flat film scraper
CN105584045A (en) * 2015-12-25 2016-05-18 吉林大学 Multi-material part 3D printing device and printing method thereof
CN105837216A (en) * 2016-03-22 2016-08-10 西安铂力特激光成形技术有限公司 Preparation method of ceramic part
CN106747360A (en) * 2017-01-18 2017-05-31 武汉纺织大学 A kind of preparation method of 3D printing photocuring ceramic size
CN107471399A (en) * 2017-09-15 2017-12-15 武汉因泰莱激光科技有限公司 A kind of new pattern laser 3D printer and control method for printing ceramic material
CN108372572A (en) * 2018-03-13 2018-08-07 华南理工大学 High-temperature rigid composite material flush type face exposes intelligent-induction 3D molding machines and Method of printing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105413967A (en) * 2015-12-25 2016-03-23 齐齐哈尔大学 Intelligent fast flat film scraper
CN105584045A (en) * 2015-12-25 2016-05-18 吉林大学 Multi-material part 3D printing device and printing method thereof
CN105837216A (en) * 2016-03-22 2016-08-10 西安铂力特激光成形技术有限公司 Preparation method of ceramic part
CN106747360A (en) * 2017-01-18 2017-05-31 武汉纺织大学 A kind of preparation method of 3D printing photocuring ceramic size
CN107471399A (en) * 2017-09-15 2017-12-15 武汉因泰莱激光科技有限公司 A kind of new pattern laser 3D printer and control method for printing ceramic material
CN108372572A (en) * 2018-03-13 2018-08-07 华南理工大学 High-temperature rigid composite material flush type face exposes intelligent-induction 3D molding machines and Method of printing

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