CN204640818U - A kind of former of three-dimensional model - Google Patents
A kind of former of three-dimensional model Download PDFInfo
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- CN204640818U CN204640818U CN201520342088.5U CN201520342088U CN204640818U CN 204640818 U CN204640818 U CN 204640818U CN 201520342088 U CN201520342088 U CN 201520342088U CN 204640818 U CN204640818 U CN 204640818U
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Abstract
The utility model relates to model forming technical field, is specifically related to a kind of former of three-dimensional model.The former of a kind of three-dimensional model that the utility model provides, comprise powder for molding dispersal device, liquid injection apparatus, forming cavity, control device and drive unit, powder for molding dispersal device comprises powder for molding storehouse, powder for molding conveying device and powder for molding push device, powder for molding pushes device and comprises the cylinder be connected with drive unit, liquid injection apparatus is arranged on the top of the opening of forming cavity, lowering or hoisting gear is respectively equipped with in powder for molding storehouse and forming cavity, liquid injection apparatus at least comprises a fluid jetting head, energy projects device is provided with above forming cavity.Superior effect of the present utility model is, described former can use the shower nozzle of low resolution improve the flexibility of speed and consolidation liquid selection and reduce costs; Realize solidification additionally by projection particular energy, obtain higher resolution ratio, realize optimum molding effect.
Description
Technical field
The utility model relates to model forming technical field, is specifically related to a kind of former of three-dimensional model.
Background technology
In prior art, U.S. patent Nos US5,204,055 discloses and is a kind ofly successively combined the method forming volumetric body by powder.Although this patent gives several effective implementation method, these Measures compare bases, to be further improved in addition in cost, speed and precision.
U.S. patent Nos US5,902,441 disclose a kind of powder contains adhesive and makes required powder successively be bonded into the method for entity by adding liquid activated adhesive.The shaping resolution ratio of the method depends on the resolution ratio of fluid jetting head.The high jet size that makes of resolution requirement reduces, thus the cost of shower nozzle increases, and reliability reduces, and shaping speed reduces.
Chinese utility model patent CN204095145U discloses a kind of stereolithograghy device, comprise the long strip type spout of the powder material that dusts, elastic doctor blade, the nozzle of spray liquid photosensitive resin, ultraviolet lamp and support system, computer control system and the powder being placed in powder feed systems, powder feed systems, liquid photosensitive resin feeding system are all connected with computer control system with adjustable ultraviolet light output system, elastic doctor blade is fixed on the below of long strip type spout, and support system is positioned at the below of elastic doctor blade, spray liquid photosensitive resin nozzle and ultraviolet lamp.Although this device adds uviol lamp, the scheme improving shaping resolution ratio is not proposed.
In above several invention, fluid jetting head is the core of former, the shaping resolution ratio of the equipment which limit the usefulness, speed and operable consolidation liquid.High-resolution fluid jetting head is expensive, and because the size about tens microns in its aperture, easily blocks, high to the fluid requirements sprayed.
Utility model content
In order to overcome defect of the prior art, the utility model provides the former of three-dimensional model, by the shower nozzle of low resolution consolidation liquid is sprayed onto on powder for molding and forms solidliquid mixture, then be cured by the solidliquid mixture of high-precision energy projects device to low resolution, thus obtain high-resolution three-dimensional model.
The utility model is achieved by the following technical solution: a kind of former of three-dimensional model, comprise powder for molding dispersal device, liquid injection apparatus, forming cavity, control device and drive unit, described powder for molding dispersal device comprises powder for molding storehouse, powder for molding conveying device and powder for molding push device, described powder for molding pushes device and comprises the cylinder be connected with described drive unit, described liquid injection apparatus is arranged on the top of the opening of forming cavity, lowering or hoisting gear is respectively equipped with in described powder for molding storehouse and forming cavity, described liquid injection apparatus at least comprises a fluid jetting head, be provided with above forming cavity, according to the shape of setting, specific solidification energy projected energy projects device in forming cavity on molded powder layer with the resolution dimensions being better than 0.5 millimeter.Further, described energy projects device and liquid injection apparatus are arranged on motion bracket.
Further, described powder for molding storehouse and forming cavity are the tubular structure of opening upwards, the opening of described tubular structure is disposed side by side on same level, described cylinder is arranged on the top of the opening of powder for molding storehouse and forming cavity, the lowering or hoisting gear in described powder for molding storehouse is be packed in the flitch the second push rod doing back and forth movement along powder for molding storehouse madial wall, and the lowering or hoisting gear of described forming cavity is be packed in the shaped platform the first push rod doing back and forth movement along described forming cavity madial wall.
Further, described energy projects device is projection arrangement or scanning means.
The utility model additionally provides a kind of forming method of three-dimensional model, and described method at least comprises:
Step 1: three-dimensional model is done slicing delamination according to presetting thickness, several obtaining three-dimensional model have the stepped construction layer of two-dimensional shapes;
Step 2: lay molded powder layer according to presetting thickness described in step 1 on shaped platform;
Step 3: according to the stepped construction layer with two-dimensional shapes of the bottom in step 1, consolidation liquid is sprayed on molded powder layer described in step 2 to form solidliquid mixture by described fluid jetting head, the resolution dimensions of described solidliquid mixture is at least greater than the shaping resolution dimensions of 1.5 times, and described solidliquid mixture covers the shape of the stepped construction layer of the described bottom;
Step 4: according to the stepped construction layer with two-dimensional shapes of the bottom in step 1, described energy projects device is by specific solidification energy projects on described solidliquid mixture, and the projection resolution dimensions of described energy projects device is equal with described shaping resolution dimensions; Described specific solidification energy makes the liquid parts in described solidliquid mixture solidify and be combined by powder for molding, obtains the first model layer;
Step 5: be laid to type powder bed in described first model layer, obtain subsequent forming powder bed;
Step 6: according to the stepped construction layer of the corresponding subsequent forming powder bed obtained in step 1, consolidation liquid is sprayed on described subsequent forming powder bed to form solidliquid mixture by described fluid jetting head, equally, the resolution dimensions of described solidliquid mixture is at least greater than the shaping resolution dimensions of 1.5 times, and described solidliquid mixture covers the shape of the stepped construction layer of described subsequent forming powder bed;
Step 7: according to the stepped construction layer of the described subsequent forming powder bed of the correspondence obtained in step 1, described energy projects device is by specific solidification energy projects on described solidliquid mixture, and the projection resolution dimensions of described energy projects device is equal with described shaping resolution dimensions; Described specific solidification energy makes the liquid parts in described solidliquid mixture solidify and be combined by powder for molding, obtain following model layer, the enough greatly conditions of the abundant and intensity of described specific solidification energy of the discharge rate of described consolidation liquid, make following model layer and adjacent layer lap solidify and combine;
Step 8: repeat step 5-7 several times, obtain the model layer of whole powder for molding stepped construction layer, namely overall three-dimensional model base substrate;
Step 9: remove unconjugated powder for molding on described three-dimensional model base substrate, obtains the three-dimensional model entity being wrapped in described solidliquid mixture;
Step 10: remove described solidliquid mixture uncured on three-dimensional model entity, obtain final three-dimensional model entity.
Further, described specific solidification energy is one or more in ultraviolet light, visible ray, infrared ray, microwave, ultrasonic wave, laser.
Further, the specific solidification energy of described energy projects device projection can make described solidliquid mixture solidify within the time of several seconds to tens seconds.
Further, described consolidation liquid contains protein.
Further, described consolidation liquid is the light-sensitive emulsion not containing light trigger, and described molded powder layer contains light trigger.
Further, described consolidation liquid is the light-sensitive emulsion containing light trigger.
Further, described light trigger is TPO.The chemical name of described TPO is 2,4,6-trimethylbenzoy-dipheny phosphine oxide.
Compared with prior art, superior effect of the present utility model is: the data configuration of the three-dimensional model that the three-dimensional model entity shaping Apparatus and method for that the utility model provides can provide according to computer goes out three-dimensional model entity, facilitate the trial-production at product design initial stage, the proprietary model customizing of client and show the process of drawing a design, reducing cost.This three-dimensional model entity shaping Apparatus and method for is especially applicable to the shaping of complex-shaped model.The utility model can use the fluid jetting head of low resolution, thus improves the flexibility of speed and consolidation liquid selection, and reduces costs.In addition, realizing solidification by projecting high-precision specific solidification energy, can higher resolution ratio be obtained, realize optimum molding effect.
Accompanying drawing explanation
Fig. 1 is the former structural representation of three-dimensional model described in the utility model;
Fig. 2 is the layer structure decomposing schematic representation of three-dimensional model described in the utility model;
Fig. 3 is the operating diagram that the former of three-dimensional model described in the utility model projects specific solidification energy;
Fig. 4 is the contoured cross-section schematic diagram of three-dimensional model described in the utility model;
Fig. 5 is the more complicated contoured cross-section schematic diagram of the another kind of three-dimensional model described in the utility model.
Reference numeral is as follows:
1-shaped platform, 2-forming cavity, 3-powder for molding, 4-powder for molding storehouse, 5-first push rod, 6-second push rod, 7-cylinder, 8-liquid injection apparatus, 9-consolidation liquid, 10-three-dimensional model, 10-1-first layer, 10-2-second layer, 10-3-the 3rd layer, 10-4-the 4th layer, the solidliquid mixture that 11-is uncured, 12-energy projects device, 13-ultraviolet light, 14-flitch, 15-motion bracket.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model detailed description of the invention is described in further detail.
As shown in accompanying drawing 1-5, the former of a kind of three-dimensional model that the utility model provides, comprise powder for molding dispersal device, injection apparatus 8, forming cavity 2, control device and drive unit, described powder for molding dispersal device comprises powder for molding storehouse 4, powder for molding conveying device and powder for molding push device, described powder for molding pushes device and comprises the cylinder 7 be connected with described drive unit, described liquid injection apparatus 8 is arranged on the top of the opening of forming cavity 2, lowering or hoisting gear is respectively equipped with in described powder for molding storehouse 4 and forming cavity 2, described liquid injection apparatus 8 comprises a fluid jetting head, be provided with the energy projects device on molded powder layer in specific solidification energy projects to forming cavity above forming cavity 2 according to the shape set.Energy projects device 12 and liquid injection apparatus 8 are arranged on motion bracket 15.Although there is not itself technical qualified relation separately between the resolution dimensions of described specific solidification energy projects and the injection resolution dimensions of described fluid jetting head, the resolution dimensions of usual described specific solidification energy projects should be less than 2/3 of the injection resolution dimensions of described fluid jetting head, otherwise does not have significance to the improvement of shaping resolution ratio.Described powder for molding storehouse 4 and forming cavity 2 are the tubular structure of opening upwards, the opening of described tubular structure is disposed side by side on same level, described cylinder 7 is arranged on the top of the opening of powder for molding storehouse 4 and forming cavity 2, the lowering or hoisting gear in described powder for molding storehouse 4 is be packed in the flitch 14 the second push rod 6 doing back and forth movement along powder for molding storehouse 4 madial wall, and the lowering or hoisting gear of described forming cavity 2 is be packed in the shaped platform 1 the first push rod 5 doing back and forth movement along described forming cavity 2 madial wall.Described energy projects device 12 is projection arrangement or scanning means, described specific solidification energy is that one or more in ultraviolet light, visible ray, infrared ray, microwave, ultrasonic wave, laser are to adapt to described consolidation liquid of different nature, such as, if described consolidation liquid is light-sensitive emulsion, ultraviolet light polymerization can be used; If described consolidation liquid will reach uniform temperature just cause curing reaction, then can use infrared ray cured.
In the utility model, described shaped platform 1, forming cavity 2, powder for molding chamber 4, first push rod 5, second push rod 6, cylinder 7 and flitch 14 form powder subsystem, each parts collaborative work in described powder subsystem, realizes the function of storing powder for molding and successively laying powder for molding.In the present embodiment, energy projects device 12 adopts ultraviolet light projector, the projection device of described ultraviolet light projector can adopt digital micro-mirror device (DMD), or adopt silicon-based liquid crystal device (LCOS), or adopt the projection liquid crystal of through mode.If light trigger adopts TPO, ultraviolet light 13 adopts wavelength to be the royal purple light of 395nm-405nm, such ultraviolet light 13 adopts lower-cost LED light source, and projection device can use the projection liquid crystal of low cost, if use the ultraviolet light 13 of more short wavelength, as adopted the ultraviolet light of 365nm, energy is higher, long-time use can shorten the life-span of liquid crystal display, at this moment adopts DMD for preferably to select.When concrete operations, the resolution ratio of described fluid jetting head is 48dpi, the spot diameter of described shower nozzle is about 0.5mm, and namely resolution dimensions is 0.5mm, and the ultraviolet light 13 of projection adopts the LED light source of 395nm-405nm wavelength, ultraviolet light projection device adopts the DMD device of TI company, model DLP3010, its resolution ratio is 1280x720, and projected resolution is designed and sized to 0.1mm, single projection area coverage is 128mmx72mm, and the mode by mobile projector expands its work area.
In the utility model, described forming cavity can construct in the lump with described three-dimensional model entity, around three-dimensional model, such as mold the described forming cavity of tubular in the lump, the powder of this forming cavity inside can by layer proper alignment, the powder of forming cavity outside can indefinite form be piled up, and this mode is particularly suitable for the shaping of large stereo model entity.
The utility model additionally provides a kind of forming method of three-dimensional model, and described method comprises:
Step 1: three-dimensional model 10 is done slicing delamination according to presetting thickness, several obtaining three-dimensional model 10 have the stepped construction layer of two-dimensional shapes; The three-dimensional model data of described three-dimensional model 10 obtain the stepped construction figure layer data with two-dimensional shapes of some planes after the process of computer hierarchy slicing, described slicing delamination is not physics slicing processes, but by computer, three-dimensional model Data Segmentation is become successively overlapping plane graph layer data, original three-dimensional model 10 can be restored after the superposition of these plane graph layers; The specific algorithm of described slicing delamination has multiple, here repetition is exceeded, a height Z cut into slices first is determined in basic operation, namely determine certain horizontal plane of cutting into slices, three-dimensional model data are generally three-dimensional enveloping surface, are made up of some triangular forms, and three-dimensional model 10 is tangent with this plane, be formed in the envelope curve of the two dimension of this plane, namely described stepped construction layer; According to three-dimensional model 10 correspondent entity part, envelope curve is filled if desired, such as, shown in the 10-1 to 10-4 of Fig. 2, the corresponding three-dimensional model entity in wherein circular inside, can fill, after filling, each structure layer can represent described three-dimensional model 10 more fully.
Step 2: lay molded powder layer according to presetting thickness described in step 1 on shaped platform 1.When laying molded powder layer, described first push rod 5 drives shaped platform 1 to decline the distance of one deck, second push rod 6 rises, powder for molding 3 is made to overflow powder for molding storehouse 4, cylinder 7 moves from left to right, and by powder for molding 3 horizontal sliding to forming cavity 2, shaped platform 1 tiles one deck molded powder layer, cylinder 7 horizontal sliding also can be rotated against pushing direction, makes powder for molding 3 tile more even.
Step 3: according to the stepped construction layer with two-dimensional shapes of the bottom in step 1, consolidation liquid 9 is sprayed on molded powder layer described in step 2 to form solidliquid mixture by described fluid jetting head, the resolution dimensions of described solidliquid mixture is at least greater than the shaping resolution dimensions of 1.5 times, and described solidliquid mixture covers the shape of the stepped construction layer of the described bottom.
Step 4: according to the stepped construction layer with two-dimensional shapes of the bottom in step 1, described energy projects device 12 is by specific solidification energy projects on solidliquid mixture, and described energy projects device 12 can make described solidliquid mixture solidify within the time of several seconds to tens seconds; The projection resolution dimensions of described energy projects device 12 is equal with shaping resolution dimensions; Described specific solidification energy makes the liquid parts in described solidliquid mixture solidify and be combined by powder for molding, obtains the first model layer; Be provided with ultraviolet light projector above described forming cavity 2, the ultraviolet light 13 of special pattern projected to molded powder layer, particularly by graphic projection on described solidliquid mixture.Injection apparatus 8 comprises a shower nozzle, can spray the consolidation liquid of low resolution (i.e. larger resolution dimensions), as shown in Figure 4 and Figure 5.Ultraviolet light projector has higher projected resolution, so the moulding section of described solidliquid mixture and three-dimensional model 10 can be made to obtain higher resolution ratio.
Step 5: be laid to type powder bed in described first model layer, obtain subsequent forming powder bed.
Step 6: according to the stepped construction layer of the corresponding subsequent forming powder bed obtained in step 1, consolidation liquid 9 is sprayed on described subsequent forming powder bed to form solidliquid mixture by described shower nozzle, equally, the resolution dimensions of described solidliquid mixture is at least greater than the shaping resolution dimensions of 1.5 times, and described solidliquid mixture covers the shape of the stepped construction layer of described subsequent forming powder bed.
Step 7: according to the stepped construction layer of the described subsequent forming powder bed of the correspondence obtained in step 1, described energy projects device 12 is by specific solidification energy projects on solidliquid mixture, and the projection resolution dimensions of described energy projects device 12 is equal with shaping resolution dimensions; Described specific solidification energy makes the liquid parts in described solidliquid mixture solidify and be combined by powder for molding, obtain following model layer, the enough greatly conditions of the abundant and intensity of described specific solidification energy of the discharge rate of described consolidation liquid, make following model layer and adjacent layer lap solidify and combine.
Step 8: repeat step 5-7 several times, obtain the model layer of whole powder for molding stepped construction layer, namely overall three-dimensional model base substrate.
Step 9: remove unconjugated powder for molding on described three-dimensional model base substrate, obtains the three-dimensional model entity being wrapped in described solidliquid mixture.
Step 10: remove solidliquid mixture 11 uncured on three-dimensional model entity, obtain final three-dimensional model entity.
Wherein, described setting thickness can change according to the shape of three-dimensional model, such as, if adjacent described stepped construction layer changes greatly, that is vertical curved surface is larger relative to the slope variation of vertical direction, such as at the top of spheroidal, described setting thickness can be relatively little of the smoothness improving described three-dimensional model entity shaping surface; Otherwise described setting thickness can be relatively large to improve shaping speed.
Wherein, described consolidation liquid 9 is the light-sensitive emulsion containing light trigger, and described light trigger adopts TPO.Described powder for molding comprises ceramic powders, metal dust, one or more in plastic powders and glass powder of more than 50%, and such as, described ceramic powders is the 1000 order kaolin ceramic powders containing more than 80%.
Described consolidation liquid 9 adopts the light-sensitive emulsion containing light trigger, and described consolidation liquid 9 also can adopt not containing the light-sensitive emulsion of light trigger, and described powder for molding 3 is containing light trigger or catalyst, and such light-sensitive emulsion is not convenient to preserve and conveying containing initator.Similar consolidation liquid, can use several, and often kind comprises different color elements, and is sprayed by the shower nozzle arranged separately, molds colored three-dimensional model entity.Described color elements is direct dyes, such as, is added in consolidation liquid, and straight forming goes out colored three-dimensional model entity; Also can be adjuective dyes, such as, heavy metallic salt, be added in consolidation liquid, and powder for molding 3 is ceramic powders, can present different colours after sintering.The ultraviolet light 13 that ultraviolet projector sends can cause the curing reaction of colloid in described solidliquid mixture, detailed process produces living radical or cation after light trigger (or sensitising agent) absorbs ultraviolet light under ultraviolet irradiation, trigger monomer is polymerized, cross-linking chemistry reacts, described consolidation liquid is made to be solid-state by liquid conversion within the several seconds, like this when each formable layer, the shape of the described stepped construction layer that projected on described solidliquid mixture by ultraviolet light projector, the part solidliquid mixture of described stepped construction layer is made to obtain enough solidifications, and the described solidliquid mixture be not projected does not complete solidification, do not get rid of because temperature simultaneously, time, scatters ultraviolet, or the solidliquid mixture be not projected that the factors such as light leak ultraviolet cause is slowly partially cured, namely the described solidliquid mixture be not projected on the three-dimensional model base substrate of the entirety obtained can by soaking, simple physics or the chemical method removals such as flushing or air blow, thus can not reclaim for shaping powder, only lose a small amount of solidliquid mixture be not projected.The device of above embodiment introduction is based on Descartes's rectangular coordinate system, and actual device can also by polar coordinate system layering, and according to identical method construct three-dimensional model entity.
The utility model sprays low resolution liquid about the shape according to setting to powder for molding and then carrys out successively curing molding by the specific solidification energy of the shape of high-resolution projection setting, in like manner, also can according to the shape of setting at molding liquid surface sprinkling pressed powder, the powder that particularly proportion is suitable with described molding liquid, then project specific solidification energy by high-resolution and carry out successively curing molding, can not reclaim for shaping liquid like this, only lose a small amount of solidliquid mixture be not projected.
The utility model is not limited to above-mentioned embodiment, and when not deviating from flesh and blood of the present utility model, any distortion that it may occur to persons skilled in the art that, improvement, replacement all fall into protection domain of the present utility model.
Claims (3)
1. the former of a three-dimensional model, comprise powder for molding dispersal device, liquid injection apparatus, forming cavity, control device and drive unit, it is characterized in that, described powder for molding dispersal device comprises powder for molding storehouse, powder for molding conveying device and powder for molding push device, described powder for molding pushes device and comprises the cylinder be connected with described drive unit, described injection apparatus is arranged on the top of the opening of forming cavity, lowering or hoisting gear is respectively equipped with in described powder for molding storehouse and forming cavity, described liquid injection apparatus at least comprises a fluid jetting head, be provided with above forming cavity, according to the shape of setting, specific solidification energy projected energy projects device in forming cavity on molded powder layer with the resolution dimensions being better than 0.5 millimeter.
2. the former of three-dimensional model according to claim 1, it is characterized in that, described powder for molding storehouse and forming cavity are the tubular structure of opening upwards, the opening of described tubular structure is disposed side by side on same level, described cylinder is arranged on the top of the opening of powder for molding storehouse and forming cavity, the lowering or hoisting gear in described powder for molding storehouse is be packed in the flitch the second push rod doing back and forth movement along powder for molding storehouse madial wall, and the lowering or hoisting gear of described forming cavity is be packed in the shaped platform the first push rod doing back and forth movement along described forming cavity madial wall.
3. the former of three-dimensional model according to claim 1, is characterized in that, described energy projects device is projection arrangement or scanning means.
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| CN201520342088.5U CN204640818U (en) | 2015-05-25 | 2015-05-25 | A kind of former of three-dimensional model |
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| CN201520342088.5U CN204640818U (en) | 2015-05-25 | 2015-05-25 | A kind of former of three-dimensional model |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859152A (en) * | 2015-05-25 | 2015-08-26 | 厦门达天电子科技有限公司 | Forming equipment and method for stereoscopic model |
| CN105252775A (en) * | 2015-11-19 | 2016-01-20 | 耿得力 | Stereoscopic model forming equipment and forming method using same |
| JP2019532834A (en) * | 2016-08-03 | 2019-11-14 | スリーデオ・インコーポレイテッド | Apparatus and method for three-dimensional printing |
| CN112703100A (en) * | 2018-09-14 | 2021-04-23 | 阿莱恩技术有限公司 | Hybrid 3D printing with photocurable materials |
-
2015
- 2015-05-25 CN CN201520342088.5U patent/CN204640818U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859152A (en) * | 2015-05-25 | 2015-08-26 | 厦门达天电子科技有限公司 | Forming equipment and method for stereoscopic model |
| CN105252775A (en) * | 2015-11-19 | 2016-01-20 | 耿得力 | Stereoscopic model forming equipment and forming method using same |
| JP2019532834A (en) * | 2016-08-03 | 2019-11-14 | スリーデオ・インコーポレイテッド | Apparatus and method for three-dimensional printing |
| JP7086931B2 (en) | 2016-08-03 | 2022-06-20 | スリーデオ・インコーポレイテッド | Equipment and methods for 3D printing |
| CN112703100A (en) * | 2018-09-14 | 2021-04-23 | 阿莱恩技术有限公司 | Hybrid 3D printing with photocurable materials |
| US11718019B2 (en) | 2018-09-14 | 2023-08-08 | Align Technology, Inc. | System for hybrid 3D printing with photo-curable materials |
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