CN104228068A - Rapid prototyping SLA 3D printer and printing method thereof - Google Patents
Rapid prototyping SLA 3D printer and printing method thereof Download PDFInfo
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- CN104228068A CN104228068A CN201410461645.5A CN201410461645A CN104228068A CN 104228068 A CN104228068 A CN 104228068A CN 201410461645 A CN201410461645 A CN 201410461645A CN 104228068 A CN104228068 A CN 104228068A
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Abstract
The invention relates to the technical field of 3D printers and printing methods, in particular to a rapid prototyping SLA 3D printer. The rapid prototyping SLA 3D printer comprises an SLA 3D printer body, wherein the SLA 3D printer body comprises a hollow cabinet body and a support which extends upwards along one side surface of the cabinet body, wherein a laser scanning device is arranged at the front end of the bottom surface of the cabinet body, a reflecting mirror is arranged at the center of the bottom surface of the cabinet body, a resin trough is arranged right above the reflecting mirror, the bottom surface of the resin trough is fixedly provided with a piece of high-transparency quartz glass, the high-transparency quartz glass is fixedly arranged on an iron plate, the iron plate is fixedly connected with a motor on the bottom surface of the cabinet body, a lifting platform is arranged right above the resin trough, the support is provided with a vertical slide rail, and the lifting platform can slide up and down along the vertical slide rail. The invention also discloses a printing method of the rapid prototyping SLA 3D printer. Compared with the prior art, the rapid prototyping SLA 3D printer has the advantages that the prototyping speed is high; since a downward-pulling mechanical structure for eliminating the vacuum force is arranged, the rate of finished products is greatly increased, the precision is high, and the printer is particularly suitable for producing a prototype with high precision requirement and a complicated structure; the structure is simple, the operation is convenient, and the production cost is greatly reduced; therefore, the rapid prototyping SLA 3D printer can be widely popularized and used.
Description
Technical field
The present invention relates to thing 3D printer and Method of printing technical field, particularly relate to a kind of SLA3D printer and Method of printing thereof of rapid shaping.
Background technology
Use printer just as printing one envelope letter: dub " printing " button on computer screen, a digital document is just sent on an ink-jet printer, and one deck ink is sprayed onto the surface of paper to form a secondary two dimensional image by it.And when 3D prints, software completes a series of digital slices by CAD technology (CAD), and be sent on 3D printer by these information of cutting into slices, slim for continuous print aspect can be stacked up by the latter, until a solid body is shaping.3D printer and the maximum difference of conventional printer are that " ink " that it uses is out and out raw material.
The form of stacking thin layer has varied.Some 3D printer uses the mode of " ink-jet ".Such as, the 3D printer company of Israel of an Objet by name uses printer head by liquid plastic substance spray very thin for one deck on mold pallet, and this coating processes under being then placed in ultraviolet.Mold pallet declines minimum distance afterwards, comes up for lower one deck is stacking.The company Stratasys that other general headquarters are positioned at Minneapolis city of the U.S. uses one to be called the technology of " fused deposition modeling ", and whole flow process is molten plastic in shower nozzle, then just forms thin layer by the mode of depositing plastic material fiber.
Some systems are also had to use powder particle as print media.Powder particle is sprayed forms the very thin powder bed of one deck on mold pallet, is then cured by the fluid binder sprayed.The technology founding that it also can use one to be called " laser sintered " becomes designated shape.This is the technology that uses in its superposition process maker of German EOS Corp. just also.The Arcam company of Switzerland is then the electron stream melting powder particulate utilized in vacuum.Above-mentioned these are only parts in many molding modes.When run into comprise hole and cantilever such labyrinth time, just need to add gel or other materials in medium to provide support or to be used for taking up space.This part powder by founding, finally only can not need use water or gas washout to fall supporter and just can form hole.Nowadays can be used for the medium wide variety printed, from various plastics to metal, pottery and rubber-like material.Some printer can also in conjunction with different medium, makes that one, the object printed is hard and other end is soft.
SLA (Stereo Lithography Apparatus) technology is exactly laser three-dimensional engraving technology, is the crystallization of machinery, laser, photochemistry, software, control technology.Based on the principle that photosensitive resin solidifies by UV-irradiation, computer controls laser and successively scans the liquid photosensitive resin of solidification, and the cross section of every one deck solidification is obtained by the three-dimensional CAD model software hierarchy of part, until finally obtain photosensitive resin prototype in kind.Photocureable rapid shaping should be that in 3D printing technique, precision is the highest, and surface is also the most smooth, and the minimum material thickness of this technology can reach 25 microns (0.025 millimeters) at present.But Introduction To Stereolithography also has two deficiencies, first photosensitive resin raw material has certain toxicity, protection is should be noted that when operating personnel use, secondly the prototype of Stereolithography is very good in outward appearance, but intensity aspect still can not compared with real manufactured goods, generally be mainly used in prototype checking aspect, then by a series of subsequent treatment operation, rapid prototyping be converted into technical grade product.In addition, the equipment cost of SLA technology, maintenance cost and material cost are all higher, and therefore, the 3D printer based on photocuring technology is mainly used in professional domain, and domestic desktop domain variability is not applied.
Therefore, SLA3D printer and Method of printing thereof that a kind of rapid shaping is provided is badly in need of, to solve the deficiencies in the prior art.
Summary of the invention
The object of the invention is the SLA3D printer in order to provide a kind of rapid shaping, shaping speed is fast, prototyping accuracy is high, be applicable to very much making required precision high, baroque prototype, and cost is low, is applicable to large-scale industrial production application.
Another object of the present invention is the Method of printing of the SLA3D printer in order to provide a kind of rapid shaping, and precision is high, speed is fast, and cost is low.
For achieving the above object, the present invention adopts following technical scheme:
A kind of SLA3D printer of rapid shaping, comprise SLA3D printer body, described SLA3D printer body comprise hollow cabinet and along described cabinet side towards the support of upper extension, the front end, bottom surface of described cabinet is provided with laser scanning device, the bottom surface central authorities of described cabinet are provided with speculum, resin storage tank is provided with directly over described speculum, the bottom surface of described resin storage tank is installed with high quartz glass thoroughly, the saturating quartz glass of described height is fixedly arranged on iron plate, described iron plate is fixedly connected with the motor be located in described cabinet floor, cape is provided with directly over described resin storage tank, described support is provided with upright slide rail, described cape slides up and down along described upright slide rail.
Further, described laser scanning device comprises bluish violet light laser and laser scanning galvanometer.
More preferably, described laser scanning galvanometer is L-type or U-shaped, can improve Scan orientation precision.
More preferably, described speculum is 45 ° of settings.
More preferably, the bottom surface of described resin storage tank is provided with adherent layer.
More preferably, described adherent layer is any one or several combinations in dimethyl silicone polymer adherent layer, mould release membrance adherent layer or Teflon adherent layer, and it is resin-bonded in the bottom of resin storage tank that adherent layer can prevent from solidifying.
More preferably, described motor is penetration type stepper motor.
More preferably, also comprise housing, described case lid is located at outside described SLA3D printer body.
More preferably, also comprise the computer being mounted with three-dimensional CAD model, described computer is connected by USB data line with described SLA3D printer body.
According to the Method of printing of the SLA3D printer of above-mentioned rapid shaping, step is as follows:
Step 1) computer is connected with SLA3D printer body, the three-dimensional CAD model designed is loaded into computer, liquid photosensitive resin is added in resin storage tank, in computer, upper computer software is installed, upper computer software sends beginning print command, and the slave computer software in control SLA3D printer body is started working;
Step 2) slave computer software controls bluish violet light laser and sends the laser beam of 305nm or 455nm, laser beam reflexes to bottom the resin storage tank directly over mirror through reflective mirror, laser scanning galvanometer can under the control of slave computer software, laser beam is scanned bottom resin storage tank according to the requirement of cross section profile, the saturating quartz glass of height bottom laser beam transparent resin storage tank reacts with the photosensitive resin in the resin storage tank be irradiated to, make to be solidified by the photosensitive resin of scanning area, thus obtain the resin flake of this cross section profile;
Step 3) ground floor resin sheet can be pasted onto on the cape that develops from top to bottom bottom resin storage tank, then resin storage tank can under the pulling of motor the open and close movement once height of one deck thin slice and cape rises on vertical rail plate, with the resin flake of solidification just cover by the new liquid resin of one deck, to carry out second layer laser scanning solidification, one deck jail of new solidification is bonded on front one deck, so repeat endlessly, until whole formed product is complete.
The invention discloses a kind of SLA3D printer and Method of printing thereof of rapid shaping, compared with prior art, there is following beneficial effect:
1, the SLA3D printer of rapid shaping of the present invention adopts laser curing, and shaping speed is fast;
2, the SLA3D printer of rapid shaping of the present invention comprises the drop-down frame for movement eliminating vacuum power, greatly improves yield rate;
3, SLA3D printer body of the present invention and device have the computer of three-dimensional CAD model to be connected, by controlling progress and the precision of printing in computer, efficiency and the precision of printing can be improved widely, be particularly suitable for making required precision high, baroque prototype;
4, SLA3D printer arrangement of the present invention is simple, easy to operate, greatly reduces production and use cost, can large-scale industrialization promotion application.
5, the Method of printing of SLA3D printer of the present invention, precision is high, speed is fast, and cost is low.
Accompanying drawing explanation
With accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not form any limitation of the invention.
Fig. 1 is the structural representation of the SLA3D printer of a kind of rapid shaping of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated, and this is preferred embodiment of the present invention.
Embodiment 1
As shown in Figure 1, a kind of SLA3D printer of rapid shaping, comprise SLA3D printer body 1, described SLA3D printer body 1 comprise hollow cabinet 11 and along described cabinet side towards the support 12 of upper extension, the front end, bottom surface of described cabinet 11 is provided with laser scanning device 2, the bottom surface central authorities of described cabinet 11 are provided with speculum 3, resin storage tank 4 is provided with directly over described speculum 3, the bottom surface of described resin storage tank 4 is installed with high quartz glass 5 thoroughly, the saturating quartz glass 5 of described height is fixedly arranged on iron plate 6, described iron plate 6 is fixedly connected with the motor 7 be located on described cabinet 11 bottom surface, cape 8 is provided with directly over described resin storage tank 4, described support 12 is provided with upright slide rail 9, described cape 8 slides up and down along described upright slide rail 9.Wherein, described motor 6 is preferably penetration type stepper motor, and described cape 8 is preferably aluminium block cape, and described speculum 3 is high reflectivity mirror, to greatest extent reflected beam, improves curing molding speed.
Further, described laser scanning device 2 comprises bluish violet light laser 21 and laser scanning galvanometer 22.
More preferably, described laser scanning galvanometer 22, in L-type, can improve Scan orientation precision.
More preferably, described speculum 3, can to greatest extent by the bottom of laser beam reflection to resin storage tank 4 in 45 ° of settings.
Bluish violet light laser 21 sends the laser beam of 305nm or 455nm, laser beam reflexes to bottom the resin storage tank 4 directly over mirror through speculum 3, laser scanning galvanometer 22 under control of the computer, laser beam is scanned bottom resin storage tank 4 according to the requirement of cross section profile, the saturating quartz glass 5 of height bottom laser beam transparent resin storage tank 4 reacts with the photosensitive resin of the resin storage tank 4 li be irradiated to, make to be solidified by the photosensitive resin of scanning area, thus obtain the resin flake of this cross section profile, ground floor resin sheet can be pasted onto on the aluminium block cape that develops from top to bottom bottom resin storage tank, after completing a printing action, cape 8 moves on described upright slide rail 9, simultaneously, motor 7 drives iron plate 6 drop-down, and then drive resin storage tank 4 to move down, the vacuum power in resin storage tank 4 is eliminated by this drop-down action, then motor 7 drives iron plate 6 pull-up, and then drive resin storage tank 4 to move up, carry out the next one and print action.
More preferably, the bottom surface of described resin storage tank 4 is provided with adherent layer, and described adherent layer is dimethyl silicone polymer adherent layer, and wherein dimethyl silicone polymer is called for short PDMS again, and dimethyl silicone polymer adherent layer can prevent the resin-bonded in the bottom of resin storage tank 4 of solidification.
More preferably, also comprise housing, described case lid is located at outside described SLA3D printer body 1, and described housing can waterproof and dustproof, and make described SLA3D printer body 1 more attractive in appearance, housing does not show in the accompanying drawings simultaneously.
More preferably, also comprise the computer being mounted with three-dimensional CAD model, described computer is connected by USB data line with described SLA3D printer body, for controlling process and the precision of printing.
The Method of printing of the SLA3D printer of described rapid shaping, step is as follows:
Step 1) computer is connected with SLA3D printer body 1, the three-dimensional CAD model designed is loaded into computer, in resin storage tank 4, adds liquid photosensitive resin;
Step 2 computer controls the laser beam that bluish violet light laser 21 sends 305nm or 455nm, laser beam reflexes to bottom the resin storage tank 4 directly over mirror through speculum 3, laser scanning shake calculate parts control under, laser beam is scanned bottom resin storage tank 4 according to the requirement of cross section profile, the saturating quartz glass 5 of height bottom laser beam transparent resin storage tank 4 reacts with the photosensitive resin of the resin storage tank 4 li be irradiated to, make to be solidified by the photosensitive resin of scanning area, thus obtain the resin flake of this cross section profile;
Step 3) ground floor resin sheet can be pasted onto on the cape 8 that develops from top to bottom bottom resin storage tank 4, then resin storage tank 4 can under the pulling of motor 7 the open and close movement once height of one deck thin slice and cape 8 rises at upright slide rail 9, with the resin flake of solidification just cover by the new liquid resin of one deck, to carry out second layer laser scanning solidification, one deck jail of new solidification is bonded on front one deck, so repeat endlessly, until whole formed product is complete.
Embodiment 2
Compared with embodiment 1, difference is only, described laser scanning galvanometer 22 is U-shaped, can improve Scan orientation precision.The bottom surface of described resin storage tank 4 is provided with adherent layer, and described adherent layer is mould release membrance adherent layer or Teflon adherent layer, can also be any combination of dimethyl silicone polymer adherent layer, mould release membrance adherent layer or Teflon adherent layer; During use, can be used alone, also can severally combinationally use.
Compared with prior art, the SLA3D printer of rapid shaping of the present invention and Method of printing thereof have following beneficial effect:
1, the SLA3D printer of rapid shaping of the present invention adopts laser curing, and shaping speed is fast;
2, the SLA3D printer of rapid shaping of the present invention comprises the drop-down frame for movement eliminating vacuum power, greatly improves yield rate;
3, SLA3D printer body of the present invention and device have the computer of three-dimensional CAD model to be connected, by controlling progress and the precision of printing in computer, efficiency and the precision of printing can be improved widely, be particularly suitable for making required precision high, baroque prototype;
4, SLA3D printer arrangement of the present invention is simple, easy to operate, greatly reduces production and use cost, can large-scale industrialization promotion apply;
5, the Method of printing of SLA3D printer of the present invention, precision is high, speed is fast, and cost is low.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although done to explain to the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (10)
1. the SLA 3D printer of a rapid shaping, comprise SLA 3D printer body, described SLA 3D printer body comprise hollow cabinet and along described cabinet side towards the support of upper extension, it is characterized in that: the front end, bottom surface of described cabinet is provided with laser scanning device, the bottom surface central authorities of described cabinet are provided with speculum, resin storage tank is provided with directly over described speculum, the bottom surface of described resin storage tank is installed with high quartz glass thoroughly, the saturating quartz glass of described height is fixedly arranged on iron plate, described iron plate is fixedly connected with the motor be located in described cabinet floor, cape is provided with directly over described resin storage tank, described support is provided with upright slide rail, described cape slides up and down along described upright slide rail.
2. the SLA 3D printer of rapid shaping according to claim 1, is characterized in that: described laser scanning device comprises bluish violet light laser and laser scanning galvanometer.
3. the SLA 3D printer of rapid shaping according to claim 2, is characterized in that: described laser scanning galvanometer is L-type or U-shaped.
4. the SLA 3D printer of rapid shaping according to claim 1, is characterized in that: described speculum is 45 ° of settings.
5. the SLA 3D printer of rapid shaping according to claim 1, is characterized in that: the bottom surface of described resin storage tank is provided with adherent layer.
6. the SLA 3D printer of rapid shaping according to claim 5, is characterized in that: described adherent layer is any one or several combinations in dimethyl silicone polymer adherent layer, mould release membrance adherent layer or Teflon adherent layer.
7. the SLA 3D printer of rapid shaping according to claim 1, is characterized in that: described motor is penetration type stepper motor.
8. the SLA 3D printer of rapid shaping according to claim 1, is characterized in that: also comprise housing, and described case lid is located at outside described SLA 3D printer body.
9. the SLA 3D printer of rapid shaping according to claim 1, is characterized in that: also comprise the computer being mounted with three-dimensional CAD model, and described computer is connected by USB data line with described SLA 3D printer body.
10. the Method of printing of the SLA 3D printer of the rapid shaping according to any one of claim 1-9, it is characterized in that, step is as follows:
Computer is connected with SLA 3D printer body by step 1), the three-dimensional CAD model designed is loaded into computer, liquid photosensitive resin is added in resin storage tank, in computer, upper computer software is installed, upper computer software sends beginning print command, and the slave computer software in control SLA 3D printer body is started working;
Step 2) slave computer software controls bluish violet light laser and sends the laser beam of 305nm or 455nm, laser beam reflexes to bottom the resin storage tank directly over mirror through reflective mirror, laser scanning galvanometer can under the control of slave computer software, laser beam is scanned bottom resin storage tank according to the requirement of cross section profile, the saturating quartz glass of height bottom laser beam transparent resin storage tank reacts with the photosensitive resin in the resin storage tank be irradiated to, make to be solidified by the photosensitive resin of scanning area, thus obtain the resin flake of this cross section profile;
Step 3) ground floor resin sheet can be pasted onto on the cape that develops from top to bottom bottom resin storage tank, then resin storage tank can under the pulling of motor the open and close movement once height of one deck thin slice and cape rises on vertical rail plate, with the resin flake of solidification just cover by the new liquid resin of one deck, to carry out second layer laser scanning solidification, one deck jail of new solidification is bonded on front one deck, so repeat endlessly, until whole formed product is complete.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104760291A (en) * | 2015-04-24 | 2015-07-08 | 京东方科技集团股份有限公司 | 3D printing device and method |
| CN104785780A (en) * | 2015-04-30 | 2015-07-22 | 北京化工大学 | Device and method for improving strength of selective laser sintering 3D printing part |
| CN105346084A (en) * | 2015-11-20 | 2016-02-24 | 苏州光韵达光电科技有限公司 | Novel 3D printer and printing process control method thereof |
| CN105365219A (en) * | 2015-11-20 | 2016-03-02 | 苏州光韵达光电科技有限公司 | 3d printer and printing method thereof |
| CN105563843A (en) * | 2016-03-08 | 2016-05-11 | 浙江乔兴建设集团湖州智能科技有限公司 | 3D printer |
| CN105856573A (en) * | 2016-05-18 | 2016-08-17 | 博纳云智（天津）科技有限公司 | High-precision and high-speed continuous 3D printer and printing method thereof |
| CN106696296A (en) * | 2015-09-06 | 2017-05-24 | 朱宗文 | Rapid lifting and pulling forming 3D printing system and printing method thereof |
| WO2017119692A1 (en) * | 2016-01-05 | 2017-07-13 | 주식회사 덴티스 | 3d printer and optical output device thereof |
| WO2017198057A1 (en) * | 2016-05-19 | 2017-11-23 | 江苏锐辰光电技术有限公司 | Novel laser 3d-printer |
| CN107557821A (en) * | 2017-08-31 | 2018-01-09 | 南通大学 | A kind of preparation method and its device of hollow 3-dimensional metal micro-structural |
| CN107791514A (en) * | 2016-08-31 | 2018-03-13 | 佛山市叱咤科技有限公司 | A kind of continuously shaped 3D printing device |
| WO2018155959A1 (en) * | 2017-02-24 | 2018-08-30 | 주식회사 쓰리딜라이트 | Method for varying tilting speed of 3d printer and 3d printer using same |
| US10906668B2 (en) | 2012-05-03 | 2021-02-02 | Alberto Daniel Lacaze | Field deployable rapid prototypable UXVs |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017198057A1 (en) * | 2016-05-19 | 2017-11-23 | 江苏锐辰光电技术有限公司 | Novel laser 3d-printer |
| CN107791514A (en) * | 2016-08-31 | 2018-03-13 | 佛山市叱咤科技有限公司 | A kind of continuously shaped 3D printing device |
| WO2018155959A1 (en) * | 2017-02-24 | 2018-08-30 | 주식회사 쓰리딜라이트 | Method for varying tilting speed of 3d printer and 3d printer using same |
| CN107557821A (en) * | 2017-08-31 | 2018-01-09 | 南通大学 | A kind of preparation method and its device of hollow 3-dimensional metal micro-structural |
| CN107557821B (en) * | 2017-08-31 | 2023-10-27 | 南通大学 | Preparation method and device of hollow three-dimensional metal microstructure |
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