CN106891523A - A kind of digital light processes three-dimensional printer and its Method of printing - Google Patents
A kind of digital light processes three-dimensional printer and its Method of printing Download PDFInfo
- Publication number
- CN106891523A CN106891523A CN201710109470.5A CN201710109470A CN106891523A CN 106891523 A CN106891523 A CN 106891523A CN 201710109470 A CN201710109470 A CN 201710109470A CN 106891523 A CN106891523 A CN 106891523A
- Authority
- CN
- China
- Prior art keywords
- photosensitive resin
- print platform
- light source
- printing
- cutting blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The present invention relates to a kind of digital light treatment three-dimensional printer and its Method of printing, the three-dimensional printer includes framework；Photosensitive resin groove is arranged in framework and for carrying the print platform of printing objects, and print platform can be moved in photosensitive resin groove；First light source is arranged on the lower section of photosensitive resin groove, and near the side of the first light source, print platform has the loading end for carrying three-dimensional body；Print platform also includes every empty portion that form loading end every the lower surface of the lower wall in empty portion, lower wall is transparent lower wall, every being provided with secondary light source in empty portion.Loading end of the secondary light source near lower wall, so contribute to be irradiated solidification to the ground floor liquid light maleate resin near loading end, so as to strengthen degree of adhesion of the ground floor three-dimensional body on print platform, it is to avoid ground floor three-dimensional body occurs the problem for departing from print platform loading end when by downward pulling force.
Description
Technical field
The present invention relates to a kind of three-dimensional printer, and in particular to a kind of digital light processes three-dimensional printer and its printing side
Method.
Background technology
3 D-printing, also referred to as increasing material manufacturing or lamination moulding, are the processes that physical object is processed using mathematical model,
In process, print object is built by successively dosing material.
The type that the method for three-dimensional fast shaping mainly includes is：Stereolithography or photocuring
（Stereolithography, SLA), layer separated growth（Laminated object manufacturing, LOM), choosing
Selecting property laser fusion（Selective laser Melting, SLM), fused glass pellet（Fused deposition
Modeling, FDM).
Digital optical processing technique (Digital Light Processing, abbreviation DLP) is a kind of brilliant based on digital micro-mirror
The new-type shadow casting technique of piece (Digital Micromirror Device, abbreviation DMD, also referred to as digital micro element), digital micro-mirror
Chip is a semiconductor switch, and it is integrated with ten thousand micromirrors of 50-130 on CMOS silicon chips, and each micromirror is represented
One pixel, when a micromirror is in " opening " state, incident light will be reflected and will be projected to image by projection lens
On screen, when a micromirror is in " pass " state, incident light will be reflected onto light absorber and be absorbed.Photocuring three
Dimension printer is a kind of based on digital optical processing technique, the rapid forming equipment with liquid photocurable resin as moulding material, its
Have the advantages that shaping speed is fast and formed precision is high.
DLP photocurings 3D printer is mainly made up of software and hardware two parts.Hardware includes printer frame, projecting apparatus
Light source, print platform and photosensitive resin groove.Print platform can move up and down in photosensitive resin groove, and in photosensitive resin groove
Built with photosensitive resin.The signal of video signal that software section is produced by projector light source by after digital processing, being projected to photosensitive
The bottom of resin storage tank, photosensitive resin in such photosensitive resin groove can instaneous polymerization into solid, and do not contacted with light it is photosensitive
Resin then keeps liquid, thus successively generates three-dimensional body in the print platform plane relative with photosensitive resin groove.
But, the structure of such DLP photocurings 3D printer easily has a problem that.When one layer of three-dimensional body of printing
Afterwards, because printing objects layer is still in the photosensitive resin of liquid, so when print platform is moved up, printing objects layer with
Vacuum will be formed between photosensitive resin groove bottom, print platform needs to overcome printing objects layer to be subject to hydraulic pressure and atmospheric pressure common
Active force, printing objects layer with photosensitive resin groove bottom be rigid disengagement, can influence printing objects layer stripping result, due to
This printer is that, come constructed object by way of successively printing, each printing objects layer is required to and photosensitive resin groove bottom
A demoulding is completed, therefore the final molding effect of object can be had a strong impact on, while can also influence the printer overall use longevity
Life.Depositing for this problem is just described in the file of the patent No. 201420510803.7 and Application No. CN201520629000
, and give solution.But, these existing methods can not solve following problem.
For the ground floor three-dimensional body formed on print platform, the upper surface of the three-dimensional body is and print platform
Lower surface contact, because the upper surface of three-dimensional body is apart from the distant of light source, therefore its solidification effect is often subject to shadow
Ring and cause solidification effect undesirable, also, because the upper surface of three-dimensional body is often subject to downward active force, in practice
It was found that, ground floor three-dimensional body easily occurs to depart from print platform or fastening effect is not good.
The content of the invention
The main object of the present invention is to provide a kind of solution ground floor three-dimensional body and is contacted loosely with the surface of print platform
Gu, the problem being easily separated from.
In order to complete above-mentioned purpose, the invention provides a kind of digital light treatment three-dimensional printer, it includes framework；It is photosensitive
Resin storage tank is arranged in framework and for carrying the print platform of printing objects, and print platform can be moved in photosensitive resin groove；
First light source is arranged on the lower section of photosensitive resin groove, and near the side of the first light source, print platform has for carrying three-dimensional
The loading end of object；Print platform also includes that every empty portion form loading end every the lower surface of the lower wall in empty portion, lower wall is
Bright lower wall, every being provided with secondary light source in empty portion.
From such scheme, secondary light source so contributes to near the of loading end near the loading end of lower wall
One layer of liquid light maleate resin is irradiated solidification, so as to strengthen degree of adhesion of the ground floor three-dimensional body on print platform, keeps away
Exempt from the problem that ground floor three-dimensional body occurs to depart from print platform loading end when by downward pulling force.
One preferred scheme is that digital light treatment three-dimensional printer also includes cutting mechanism, and cutting mechanism has connection
Push-pull device at fixed and cutting blade together, one end of push-pull device at fixed are connected with the side wall of photosensitive resin groove, push-pull device at fixed it is another
One end is connected with cutting blade.
From such scheme, cutting mechanism drives cutting blade that the photosensitive resin layer after solidification is separated with trough floor,
So that ground floor three-dimensional body departs from the loading end of print platform when avoiding trough floor from pulling the three-dimensional body having cured.
One preferred scheme is that the rear end of cutting blade is connected with push-pull device at fixed, and the front end of cutting blade touch photosensitive
The trough floor of resin storage tank.
One preferred scheme is that the position of the rear end of cutting blade is higher than the front end position of cutting blade, and cuts
Cutting blade is curvilinear along rear end to front end.
From such scheme, it is ensured that cutting position is accurate, it is to avoid the problem that unexpected cutting photosensitive resin is caused.
Digital light processes the Method of printing of three-dimensional printer, it is characterised in that digital light treatment three-dimensional printer includes frame
Frame, photosensitive resin groove and the print platform for carrying printing objects；Photosensitive resin groove is arranged in framework, in photosensitive resin groove
It is mounted with photosensitive resin；Print platform can be moved in photosensitive resin groove；First light source is arranged on the lower section of photosensitive resin groove,
Near the position of the first light source, print platform has the loading end for carrying three-dimensional body；Print platform also include every empty portion,
Lower surface every empty portion forms loading end, and the lower wall is transparent lower wall, every being provided with secondary light source in empty portion；
The Method of printing includes following step：
First, the controller of digital light treatment three-dimensional printer obtains the slice of data information of preparation printing three-dimensional body；
Then, ground floor printing step is performed, print platform is moved to photosensitive resin groove near the position of trough floor；
Then, ground floor curing schedule is performed, the first light source sends the illumination of given pattern, the illumination after trough floor by irradiating
On photosensitive resin, meanwhile, secondary light source sends the illumination of given pattern, and the illumination is radiated at photosensitive resin by loading end
On, there is solidification and ground floor object formed on loading end in photosensitive resin；
Then, moving step is performed, travel mechanism drives print platform to move up a given spacing distance, preparation printing
Second layer object；
Then, second layer curing schedule is performed, the first light source sends the illumination of given pattern, the illumination after trough floor by irradiating
On photosensitive resin, photosensitive resin solidify to form second layer object on ground floor object；
Finally, repeat print platform moving step and solidification be irradiated to each layer of photosensitive resin using the first light source,
Until forming the three-dimensional body of preparation printing.
One preferred scheme is that digital light treatment three-dimensional printer also includes cutting mechanism, and cutting mechanism has connection
Push-pull device at fixed and cutting blade together, one end of push-pull device at fixed are connected with the side wall of photosensitive resin groove, push-pull device at fixed it is another
One end is connected with cutting blade；The rear end of cutting blade is connected with push-pull device at fixed, and the front end of cutting blade touch photosensitive resin groove
Trough floor；The position of the rear end of cutting blade higher than cutting blade front end position, and cutting blade along rear end to preceding
Extreme direction is in curved；When having the photosensitive resin of solidification on the loading end of print platform, and it is moved up in print platform
Before, push-pull device at fixed drives joint face of the cutting blade between trough floor and the photosensitive resin of solidification to be cut.
In addition, this three-dimensional printer there is also following defect.The general principle of this three-dimensional printer is exactly moving machine
Structure drives print platform successively to be moved up in photosensitive resin groove, meanwhile, digital light processing unit is to each layer of photosensitive resin
Solidification irradiation, successively forms three-dimensional body.However, being limited to the variable density or other physical parameters of liquid light maleate resin
Influence, in the curing process, its volume can typically change liquid light maleate resin.Existing liquid light maleate resin is occurring admittedly
After change, volume would generally reduce.Also, the degree of this diminution can be continually changing according to specific extraneous factor, it is extraneous because
Element is, for example, intensity of illumination, the characteristic of photosensitive resin, environment temperature etc..As shown in figure 9, print platform lower surface have treat
The ground floor liquid light maleate resin 1 of solidification, the thickness of ground floor liquid light maleate resin 1 is d1, by light source to the ground floor liquid
The ground floor three-dimensional body 2 of solidification is formed after body photosensitive tree 1 fat irradiation solidification（Dotted portion in figure）, thickness is changed into d2, d1
It is d0 with the difference of d2.Although the difference d0 between d1 and d2 may be very small, after the multiple layers of printing；Or,
The three-dimensional body higher for precision, the loss of this precision is still significant.
In order to solve the above problems, 3 D-printing is processed the invention provides a kind of digital light with function of making up the difference automatically
Machine, it includes framework；Photosensitive resin groove is arranged in framework, and liquid light maleate resin is loaded with photosensitive resin groove；For carrying
The print platform of printing objects can be moved in photosensitive resin groove；First light source is arranged on the lower section of photosensitive resin groove；Liquid level is high
Degree sensor is used to detect the height of liquid light maleate resin；Controller electrically connects with liquid surface height sensor, print platform respectively
Connect, controller also includes processor.
From such scheme, the change of liquid level can be sensed by liquid surface height sensor, and then calculated
Contraction change rate after each layer of three-dimensional body solidification, and then the mobile height for needing compensation is calculated, finally, improve printing flat
The precision of the highly mobile spacing distance of platform.
One preferred scheme is that the digital light treatment three-dimensional printer with function of making up the difference automatically also includes barrel,
The lower end of barrel is connected with the lower end of photosensitive resin groove, and liquid surface height sensor is arranged in barrel.
From such scheme, barrel is a single part, and liquid surface height sensor is arranged on when in barrel,
The normal work in photosensitive resin groove is not affected, and facilitates maintenance of the staff to liquid surface height sensor.
Present invention also offers the Method of printing that a kind of digital light with function of making up the difference automatically processes three-dimensional printer, number
Word light treatment three-dimensional printer includes framework；Photosensitive resin groove is arranged in framework, and it is photosensitive to be loaded with liquid in photosensitive resin groove
Resin；Print platform for carrying printing objects can be moved in photosensitive resin groove；First light source is arranged on photosensitive resin groove
Lower section；Liquid surface height sensor is used to detect the height of liquid light maleate resin；Controller respectively with liquid surface height sensor, beat
Print platform is electrically connected with.
The Method of printing includes following step：First, the controller of digital light treatment three-dimensional printer obtains preparation and beats
Print the slice of data information of three-dimensional body；Then, ground floor printing step is performed, print platform is moved to photosensitive resin groove and is close to
The position of trough floor, liquid surface height sensor senses that the liquid level of the photosensitive resin in photosensitive resin groove is the first height；
Then, ground floor curing schedule is performed, the first light source sends the illumination of given pattern, the illumination is by being radiated at the after trough floor
On one layer of liquid light maleate resin, there is solidification and ground floor three-dimensional body formed on loading end in photosensitive resin, meanwhile, liquid
Face height sensor senses that the liquid level of the photosensitive resin in photosensitive resin groove is the second height；Then, mobile step is performed
Suddenly, travel mechanism drives print platform to move up a given spacing distance, preparation printing second layer three-dimensional body；Connect
, perform fine setting apart from calculation procedure, the processor of controller calculates first according to the first height, the difference of the second height
Shrinkage factor after layer three-dimensional body solidification, calculates fine setting distance therewith；Then, fine setting is performed apart from moving step, moving machine
Structure drives print platform to move down fine setting distance；Then, second layer curing schedule is performed, the first light source sends given pattern
Illumination, by being radiated at after trough floor on second layer liquid light maleate resin, second layer liquid light maleate resin is in ground floor for the illumination
Second layer three-dimensional body is solidify to form on three-dimensional body；Finally, print platform moving step, fine setting distance is repeated to calculate and walk
Rapid and fine setting is irradiated solidification using the first light source apart from moving step to each layer of liquid light maleate resin, until being formed
The three-dimensional body of preparation printing.
The high accuracy number light treatment 3 D-printing that the present invention is provided includes framework；Photosensitive resin groove is arranged in framework,
Liquid light maleate resin is loaded with photosensitive resin groove；With the print platform for carrying printing objects, can be in photosensitive resin groove
Motion；First light source is arranged on the lower section of photosensitive resin groove；Controller is electrically connected with print platform, and controller also includes treatment
Device and calibration module, are provided with the data of fine setting distance in calibration module.
From such scheme, by being provided with fine setting distance in calibration module, and then the movement for needing compensation is calculated
Highly, finally, the precision of the highly mobile spacing distance of print platform is improved.
High accuracy number light processes the Method of printing of 3 D-printing, and digital light treatment three-dimensional printer includes framework；It is photosensitive
Resin storage tank is arranged in framework, and liquid light maleate resin is loaded with photosensitive resin groove；Put down with the printing for carrying printing objects
Platform, can move in photosensitive resin groove；First light source is arranged on the lower section of photosensitive resin groove；Controller electrically connects with print platform
Connect, controller also includes processor and calibration module, the data of fine setting distance are provided with calibration module.
The Method of printing includes following step：First, the controller of digital light treatment three-dimensional printer obtains preparation and beats
Print the slice of data information of three-dimensional body；Then, ground floor printing step is performed, print platform is moved to photosensitive resin groove and is close to
The position of trough floor, liquid surface height sensor senses that the liquid level of the photosensitive resin in photosensitive resin groove is the first height；
Then, ground floor curing schedule is performed, the first light source sends the illumination of given pattern, the illumination is by being radiated at the after trough floor
On one layer of liquid light maleate resin, there is solidification and ground floor three-dimensional body formed on loading end in photosensitive resin；Then, hold
Row moving step, travel mechanism drives print platform to move up a given spacing distance, and the preparation printing second layer is three-dimensional
Object；Meanwhile, fine setting is performed apart from moving step, the processor of controller is moved according to the fine setting distance set in calibration module
Motivation structure drives print platform to move down fine setting distance；Then, second layer curing schedule is performed, the first light source sends given figure
The illumination of case, by being radiated at after trough floor on second layer liquid light maleate resin, second layer liquid light maleate resin is for the illumination
Second layer three-dimensional body is solidify to form on one layer of three-dimensional body；Finally, print platform moving step and fine setting distance are repeated
Moving step, and solidification is irradiated to each layer of liquid light maleate resin using the first light source, until forming the three of preparation printing
Dimension object.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structure chart of DLP three-dimensional printers embodiment of the present invention.
Fig. 2 is the structure chart after DLP three-dimensional printers embodiment hidden parts framework of the present invention.
Fig. 3 is another view after DLP three-dimensional printers embodiment hidden parts framework of the present invention.
Fig. 4 is photosensitive resin groove, print platform, the first light source and second light of DLP three-dimensional printers embodiment of the present invention
The structure chart in source.
Fig. 5 is the members of digital light treatment three-dimensional printer embodiment of the present invention when ground floor three-dimensional body is printed
State diagram.
Fig. 6 is the members of digital light treatment three-dimensional printer embodiment of the present invention when second layer three-dimensional body is printed
State diagram.
Fig. 7 is the structure chart that digital light of the present invention processes three-dimensional printer second embodiment.
Fig. 8 is the structure chart of the members of digital light treatment three-dimensional printer 3rd embodiment of the present invention.
Ground floor liquid light maleate resin during Fig. 9 on the print platform of existing DLP three-dimensional printers was solidifying
The schematic diagram shunk when forming ground floor three-dimensional body after journey.
During Figure 10 the members of DLP three-dimensional printers fourth embodiment of the present invention print ground floor three-dimensional body when
Schematic diagram.
During Figure 11 the members of DLP three-dimensional printers fourth embodiment of the present invention print the second layer three-dimensional body when
Schematic diagram.
Specific embodiment
First embodiment：
As shown in Figure 1 to Figure 3, the DLP three-dimensional printers of the present embodiment include framework 10, projector light source, photosensitive resin groove 20,
Print platform 30, lead screw transmission mechanism 40 and control system.The light for illumination curing shaping is loaded with photosensitive resin groove 20
Quick resin, photosensitive resin groove 20 is arranged in framework 10, and under the drive of lead screw transmission mechanism 40, print platform 30 can be photosensitive
Motion in resin storage tank 20, print platform 30 is used to carry three-dimensional body.Framework 10 forms confined chamber, and then causes photosensitive resin
Illumination curing forming process can be placed in closed environment, and the thorn that photosensitive resin is produced in the curing process is avoided to a certain extent
In sharp property exhaust gas diffusion to the environment of surrounding.
Control system can obtain the print data of three-dimensional body, and the mode for obtaining data can be cut into slices by computer
Obtained after software processing, it is also possible to print data is obtained by way of inserting storage card.Lead screw transmission mechanism 40 has screw mandrel
And motor, control system is capable of the normal work of controlled motor, drives the motion of screw mandrel, the liter of final control print platform 30
Drop.Control system is also connected with projector light source, so as to control and adjust the imagewise pattern of projector light source, irradiation time and photograph
Penetrate the parameters such as intensity.In addition, being the Chinese utility model patent and Application No. of CN204505857U for example in notification number
Concrete structure and the printing that DLP three-dimensional printers are disclosed in the Chinese invention patent application of CN201510512791.0 are former
Reason.
As shown in figure 4, the first light source 50 is arranged on the lower section of the trough floor 21 of photosensitive resin groove 20, the first light source 50 is preferred
For digital light processes light source, such as projector light source.Near the side of the first light source 50, print platform 30 has for carrying
The lower surface 34 of three-dimensional body.
Print platform 30 also includes that every empty portion 31 lower surface every empty portion 31 forms loading end（Lower surface 34）, loading end
It is transparent loading end, every secondary light source 33 is provided with empty portion 31, secondary light source 33 is preferably digital light treatment light source.Second light
Source 33 so contributes to, to being irradiated solidification near the liquid light maleate resin of loading end, to strengthen ground floor three near loading end
Degree of adhesion of the dimension object 36 on print platform 30, it is to avoid ground floor three-dimensional body 36 occurs when forced downwards
Depart from the problem of the loading end of print platform 30.
The Method of printing of the digital light treatment three-dimensional printer of the present embodiment includes following step.
First, the controller of digital light treatment three-dimensional printer obtains the slice of data information of preparation printing three-dimensional body.
Then, the printing step of ground floor three-dimensional body 36 is performed, print platform 30 is moved to photosensitive resin groove 20 and is close to
The position of trough floor 21.
Then, as shown in figure 5, performing ground floor curing schedule, the first light source 50 sends the illumination of given pattern, the illumination
By being radiated on the liquid light maleate resin of ground floor after trough floor 21, meanwhile, secondary light source 33 sends the illumination of given pattern,
The illumination is radiated on the liquid light maleate resin of ground floor by loading end, the liquid light maleate resin of ground floor occur solidification and
Ground floor three-dimensional body 36 is formed on loading end.
Then, as shown in fig. 6, performing moving step, travel mechanism drive print platform 30 move up one it is given
Spacing distance d（Print platform 30 moves up spacing distance d relative to photosensitive resin groove 20）, preparation printing second layer three-dimensional article
Body 37.
Then, second layer curing schedule is performed, the first light source 50 sends the illumination of given pattern, and the illumination passes through trough floor
It is radiated at after 21 on second layer liquid light maleate resin, it is three-dimensional that photosensitive resin solidify to form the second layer on ground floor three-dimensional body 36
Object 37.
Finally, the moving step of print platform 30 is repeated and using the first light source 50 to each layer of photosensitive tree of liquid
Fat is irradiated solidification, until forming the three-dimensional body of preparation printing.
Second embodiment：
A kind of digital light treatment three-dimensional printer is present embodiments provided, it includes that framework 10, photosensitive resin groove 20 and printing are flat
Platform 30.Photosensitive resin groove 20 is arranged in framework 10, and the print platform 30 for carrying printing objects can be in photosensitive resin groove 20
Interior motion, the motion mode of print platform 30 can be realized by the kind of drive of motor, screw mandrel.
The digital light treatment three-dimensional printer of the present embodiment also includes cutting mechanism, as shown in fig. 7, cutting mechanism has connecting
The push-pull device at fixed 60 and cutting blade 61 being connected together, one end of push-pull device at fixed 60 are connected with the side wall 22 of photosensitive resin groove 20,
Push-pull device at fixed 60 has the rod member that can in the horizontal direction stretch and elongate, and the end of rod member is connected with cutting blade 61.Push-pull device at fixed
60 other end is connected with cutting blade 61.Cutting mechanism drives cutting blade 61 the photosensitive resin layer after solidification（Formed
Three-dimensional body）Separated with trough floor 21, it is to avoid trough floor 21 causes ground floor three-dimensional body when pulling the three-dimensional body of solidification
36 with the loading end of print platform 30（Lower surface 34）Depart from.The rear end of cutting blade 61 is connected with push-pull device at fixed 60, cutter
The front end of piece 61 touch the trough floor 21 of photosensitive resin groove 20.
The position of the rear end of cutting blade 61 is higher than the front end position of cutting blade 61, and cutting blade 61 is along rear end
To front end in curved.Can so ensure that cutting position is accurate, it is to avoid the harm that unexpected cutting photosensitive resin is caused.
3rd embodiment
The digital light treatment three-dimensional printer of the present embodiment is identical with first embodiment, is only made with regard to difference retouching in detail below
State.As shown in figure 8, the print platform of the present embodiment has very fast adsorbent equipment 70, the loading end 35 of the lower wall of print platform
Upper to have multiple through holes 38, the vacuum pneumatic of the vacuum absorption device 70 is by the ground floor three-dimensional body 36 on loading end 35
Carry out absorption fixation, so as to avoid ground floor three-dimensional body 36 when by downward active force with the loading end of print platform 30
35（Lower surface 34）Depart from.In a preferred embodiment, through hole 38 is the aperture of dense arrangement, and is had on the aperture of dense arrangement
There is sealing shutter to be opened/closed, if being not provided with sealing shutter, the upper surface of ground floor three-dimensional body 36 just occurs not
Smooth structure.Before liquid light maleate resin solidification, the closed aperture of shutter is sealed, and work as ground floor liquid light maleate resin and consolidate
After change（After formation ground floor three-dimensional body 36）, sealing shutter opening, the negative-pressure air-flow in aperture can be to ground floor
Three-dimensional body 36 plays fixation.After three-dimensional body printing is finished, can also be by the aperture of dense arrangement to first
Layer three-dimensional body 36 applies the downward power of vertical direction, and the downward power of vertical direction is provided by malleation air-flow, malleation air-flow
Source is malleation air-flow feeding mechanism, and malleation air-flow feeding mechanism is, for example, air blower.Also, vacuum absorption device and malleation air-flow
Between feeding mechanism can mutual switch operating, handoff procedure is for example completed by magnetic valve, alternately in the aperture of dense arrangement
Different types of air-flow is provided, when provide malleation air-flow when, can facilitate staff three-dimensional body holding from print platform
The three-dimensional body is removed on section.
Fourth embodiment
The three-dimensional printer of the present embodiment is essentially identical with the structure of the three-dimensional printer of any of the above-described embodiment, below only
Difference is described in detail.
As shown in Figure 10, the first light source 50 is arranged on the lower section of photosensitive resin groove 20.Liquid surface height sensor 80 is used to examine
Survey the height of liquid light maleate resin.Controller is electrically connected with liquid surface height sensor 80, print platform 30 respectively, and controller is also
Including processor.The three-dimensional printer also includes barrel 90, and the lower end 91 of barrel 90 connects with the lower end of photosensitive resin groove 20
Logical, liquid surface height sensor 80 is arranged in barrel 90.
The Method of printing includes following step.
First, the controller of digital light treatment three-dimensional printer obtains the slice of data information of preparation printing three-dimensional body.
Then, as shown in Figure 10, ground floor printing step is performed, print platform 30 is moved to photosensitive resin groove 20 near groove
The position of base plate 21, liquid surface height sensor 80 senses that the liquid level of the liquid light maleate resin in photosensitive resin groove 20 is the
One height.
Then, ground floor curing schedule is performed, the first light source 50 sends the illumination of given pattern, and the illumination passes through trough floor
It is radiated at after 21 on ground floor liquid light maleate resin, liquid light maleate resin occurs solidification and ground floor three is formed on loading end
Dimension object 36, meanwhile, liquid surface height sensor 80 senses that the liquid level of the photosensitive resin in photosensitive resin groove becomes and turns to the
Two height.
Then, perform moving step, controller control travel mechanism drive print platform 20 move up one it is given
Spacing distance H, preparation printing second layer three-dimensional body.
Then, perform fine setting apart from calculation procedure, the processor of controller according to the first height, the difference of the second height,
The shrinkage factor after ground floor three-dimensional body 36 solidifies is calculated, fine setting is calculated therewith apart from Y, fine setting is generally interval apart from Y
Apart from the 1% to 5% of H.
Then, fine setting is performed apart from moving step, and travel mechanism drives the vertical direction of print platform 20 to move down fine setting
Apart from Y.
Then, as shown in figure 11, the curing schedule of second layer three-dimensional body is performed, the first light source 50 sends given pattern
Illumination, by being radiated on second layer liquid light maleate resin after trough floor 21, second layer liquid light maleate resin is first for the illumination
Second layer three-dimensional body 37 is solidify to form on layer three-dimensional body 36.
Finally, print platform moving step, fine setting are repeated apart from calculation procedure and fine setting apart from moving step, and profit
Solidification is irradiated to each layer of liquid light maleate resin with the first light source, until forming the three-dimensional body of preparation printing.
The liquid surface height sensor of the present embodiment can specifically be realized using following scheme.Sensed with ultrasonic wave or radar
Device is arranged on container top（Photosensitive resin groove top or the top of barrel）Measurement, can also use differential pressure transmitter malleation chamber
It is connected on container bottom measurement.In addition, liquid surface height sensor may be arranged as：Liquid surface height sensor includes a magnetic induction
Sensor and magnetic ball float, magnetic ball float are arranged in barrel, and magnetic induction sensor is arranged on the top of barrel, sensor
Detection signal is transmitted to controller, the processor of controller can be by obtaining the changing value d1 of liquid level after computing.This
Outward, staff can manually measure the changing value d1 of the liquid height in photosensitive resin groove after liquid light maleate resin solidifies.This
Outward, liquid surface height sensor may be arranged as：Including LDM4X range sensors and buoy, LDM4X range sensors are arranged on
The top of barrel, buoy is placed on the liquid light maleate resin of barrel, and the distance of range sensor detection buoy just can be with,
Detection signal is transmitted to controller, and the processor of controller is by obtaining the changing value d1 of liquid level after calculating.
In a specific embodiment, processor has following information：It is total in photosensitive resin groove and barrel
Liquid light maleate resin is V1, and the floor space of photosensitive resin groove and barrel is S, the ground floor liquid light maleate resin of preparation solidification
Volume is V2, and the area of the horizontal direction of ground floor liquid light maleate resin is S1, and theoretical spacing distance is H.When ground floor liquid
After photosensitive resin solidify to form ground floor three-dimensional body, if the height change value of liquid light maleate resin that processor is obtained is
d1.Assume again that ground floor three-dimensional body is rectangle, then, fine setting is apart from the computing formula of Y：（S/S1）*d1.Or, fine setting
Computing formula apart from Y is：（V1/V2）*d1.
In other embodiments, it is also possible to learn the shrinkage factor of liquid light maleate resin in advance, that is to say, that learn every in advance
It should be how many once to finely tune apart from Y, i.e. fine setting is fixed setting value apart from Y.But, in this embodiment, fine setting away from
It is a changeless value from Y, but in real process, the value can change according to the difference of environmental factor, therefore
Calibration function will be lost, precision is accordingly reduced.
5th embodiment：
The three-dimensional printer of the present embodiment is essentially identical with the structure of any of the above-described embodiment, is only made in detail with regard to difference below
Describe in detail bright.
The high accuracy number light treatment 3 D-printing of the present embodiment includes framework；Photosensitive resin groove is arranged in framework, light
Liquid light maleate resin is loaded with quick resin storage tank；With the print platform for carrying printing objects, can be transported in photosensitive resin groove
It is dynamic；First light source is arranged on the lower section of photosensitive resin groove；Controller is electrically connected with print platform, and controller also includes processor
And calibration module, the data of fine setting distance are provided with calibration module.By being provided with fine setting distance, Jin Erji in calibration module
The mobile height for needing compensation is calculated, finally, the precision of the highly mobile spacing distance of print platform is improved.
Fine setting distance is the value being calculated according to the shrinkage factor of liquid light maleate resin, for example, being beaten according to multiple three-dimensional
After print experiment, the average value of shrinkage factor is measured, finally obtain the less fine setting of error apart from Y, fine setting obtains process apart from Y
The fine setting for being referred to above-mentioned first embodiment obtains process apart from Y.
High accuracy number light processes the Method of printing of 3 D-printing, and digital light treatment three-dimensional printer includes framework；It is photosensitive
Resin storage tank is arranged in framework, and liquid light maleate resin is loaded with photosensitive resin groove；Put down with the printing for carrying printing objects
Platform, can move in photosensitive resin groove；First light source is arranged on the lower section of photosensitive resin groove；Controller electrically connects with print platform
Connect, controller also includes processor and calibration module, the data of fine setting distance are provided with calibration module.
The Method of printing includes following step：First, the controller of digital light treatment three-dimensional printer obtains preparation and beats
Print the slice of data information of three-dimensional body；Then, ground floor printing step is performed, print platform is moved to photosensitive resin groove and is close to
The position of trough floor, liquid surface height sensor senses that the liquid level of the photosensitive resin in photosensitive resin groove is the first height；
Then, ground floor curing schedule is performed, the first light source sends the illumination of given pattern, the illumination is by being radiated at the after trough floor
On one layer of liquid light maleate resin, there is solidification and ground floor three-dimensional body formed on loading end in photosensitive resin；Then, hold
Row moving step, travel mechanism drives print platform to move up a given spacing distance, and the preparation printing second layer is three-dimensional
Object；Meanwhile, fine setting is performed apart from moving step, the processor of controller is moved according to the fine setting distance set in calibration module
Motivation structure drives print platform to move down fine setting distance；Then, second layer curing schedule is performed, the first light source sends given figure
The illumination of case, by being radiated at after trough floor on second layer liquid light maleate resin, second layer liquid light maleate resin is for the illumination
Second layer three-dimensional body is solidify to form on one layer of three-dimensional body；Finally, print platform moving step and fine setting distance are repeated
Moving step, and solidification is irradiated to each layer of liquid light maleate resin using the first light source, until forming the three of preparation printing
Dimension object.
In other embodiments, weight induction device is installed on print platform, after three-dimensional body printing is completed, weight
Inductor can measure the weight of the three-dimensional body of solidification, so as to detect the weight of the liquid light maleate resin of consumption.And then, use
Family can also obtain the volume of the three-dimensional body, and then calculate its density, and then, after liquid light maleate resin solidification can be obtained
Shrinkage factor.Weight induction device and controller are electrically connected with.Controller has wireless transmission antenna, and wireless transmission antenna passes signal
Transport to mobile terminal.
Pressure sensor is provided with photosensitive resin groove, pressure sensor transmits the pressure signal for detecting to control
Device, when controller judges that pressure value is less than threshold value, illustrates the liquid light maleate resin deficiency in liquid light maleate resin groove, it is necessary to mend
Fill, controller sends signal to mobile terminal such as mobile phone by wireless transmission antenna.In addition, controller can also include report
Alarm device, the warning device sends audible alarm or color alarm, and it is photosensitive to lack liquid to point out user, in the photosensitive resin groove
Resin.
Claims (6)
1. a kind of digital light processes three-dimensional printer, including：
Framework；
Photosensitive resin groove, is arranged in the framework；With
Print platform for carrying printing objects, can move in the photosensitive resin groove；
It is characterized in that：
First light source, is arranged on the lower section of the photosensitive resin groove,
Near the side of first light source, the print platform has the loading end for carrying three-dimensional body；
The print platform also includes every empty portion, and the lower surface of the lower wall every empty portion forms the loading end, it is described under
Side wall is transparent lower wall, described every being provided with secondary light source in empty portion.
2. digital light according to claim 1 processes three-dimensional printer, it is characterised in that
The digital light treatment three-dimensional printer also includes cutting mechanism, and the cutting mechanism has the push-and-pull dress for linking together
Put and cutting blade, one end of the push-pull device at fixed is connected with the side wall of the photosensitive resin groove, the push-pull device at fixed it is another
End is connected with the cutting blade.
3. digital light according to claim 2 processes three-dimensional printer, it is characterised in that
The rear end of the cutting blade is connected with the push-pull device at fixed, and the front end of the cutting blade touch the photosensitive resin groove
Trough floor.
4. digital light according to claim 3 processes three-dimensional printer, it is characterised in that
The position of the rear end of the cutting blade is higher than the front end position of the cutting blade, and the cutting blade is along institute
Rear end is stated to the preceding extreme direction in curved.
5. a kind of digital light processes the Method of printing of three-dimensional printer, it is characterised in that
The digital light treatment three-dimensional printer includes framework, photosensitive resin groove and the print platform for carrying printing objects；
Photosensitive resin groove is arranged in the framework, and photosensitive resin is mounted with the photosensitive resin groove；Print platform can be in institute
State motion in photosensitive resin groove；
It is characterized in that：
First light source is arranged on the lower section of the photosensitive resin groove,
Near the side of first light source, the print platform has the loading end for carrying three-dimensional body；
The print platform also includes every empty portion, and the lower surface of the lower wall every empty portion forms the loading end, it is described under
Side wall is transparent lower wall, described every being provided with secondary light source in empty portion；
The Method of printing includes following step：
First, the controller of the digital light treatment three-dimensional printer obtains the slice of data information of preparation printing three-dimensional body；
Then, ground floor printing step is performed, the print platform is moved to the photosensitive resin groove near the trough floor
Position；
Then, ground floor curing schedule is performed, first light source sends the illumination of given pattern, and the illumination is by after trough floor
It is radiated on the liquid light maleate resin of ground floor, meanwhile, secondary light source sends the illumination of given pattern, and the illumination passes through lower wall
It is radiated on the liquid light maleate resin of ground floor afterwards, photosensitive resin occurs solidification and ground floor three is formed on the loading end
Dimension object；
Then, moving step is performed, the travel mechanism drives the print platform to move up a given spacing distance,
Preparation printing second layer object；
Then, second layer curing schedule is performed, first light source sends the illumination of given pattern, and the illumination is by after trough floor
It is radiated on second layer liquid light maleate resin, second layer liquid light maleate resin solidify to form on the ground floor three-dimensional body
Two layers of three-dimensional body；
Finally, repeat print platform moving step and each layer of liquid light maleate resin is carried out using first light source
Irradiation solidification, until forming the three-dimensional body of preparation printing.
6. digital light according to claim 5 processes the Method of printing of three-dimensional printer, it is characterised in that
The digital light treatment three-dimensional printer also includes cutting mechanism, and the cutting mechanism has the push-and-pull dress for linking together
Put and cutting blade, one end of the push-pull device at fixed is connected with the side wall of the photosensitive resin groove, the push-pull device at fixed it is another
End is connected with the cutting blade；The rear end of the cutting blade is connected with the push-pull device at fixed, the front end of the cutting blade
Touch the trough floor of the photosensitive resin groove；The position of the rear end of the cutting blade is higher than where the front end of the cutting blade
Position, and the cutting blade is in curved along the rear end to the preceding extreme direction；
When having the photosensitive resin of solidification on the loading end of the print platform, and it is moved up in the print platform
Before, the push-pull device at fixed drives joint face of the cutting blade between the trough floor and the photosensitive resin of the solidification
Cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109470.5A CN106891523A (en) | 2017-02-27 | 2017-02-27 | A kind of digital light processes three-dimensional printer and its Method of printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109470.5A CN106891523A (en) | 2017-02-27 | 2017-02-27 | A kind of digital light processes three-dimensional printer and its Method of printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106891523A true CN106891523A (en) | 2017-06-27 |
Family
ID=59184352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710109470.5A Pending CN106891523A (en) | 2017-02-27 | 2017-02-27 | A kind of digital light processes three-dimensional printer and its Method of printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106891523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111958964A (en) * | 2020-09-08 | 2020-11-20 | 江阴司特易生物技术有限公司 | 3D printer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935035A (en) * | 2014-03-27 | 2014-07-23 | 沈阳巧时器美科技有限公司 | Light-source movable type area-forming three-dimensional printing forming system |
| CN204894534U (en) * | 2015-08-24 | 2015-12-23 | 珠海天威飞马打印耗材有限公司 | Digit optical processing three -dimensional inkjet printer |
| CN105397084A (en) * | 2014-09-05 | 2016-03-16 | 沙迪克株式会社 | Laminaion Molding Apparatus |
| CN105922595A (en) * | 2016-06-27 | 2016-09-07 | 珠海天威飞马打印耗材有限公司 | Photocuring three-dimensional printer and three-dimensional object molding method |
-
2017
- 2017-02-27 CN CN201710109470.5A patent/CN106891523A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935035A (en) * | 2014-03-27 | 2014-07-23 | 沈阳巧时器美科技有限公司 | Light-source movable type area-forming three-dimensional printing forming system |
| CN105397084A (en) * | 2014-09-05 | 2016-03-16 | 沙迪克株式会社 | Laminaion Molding Apparatus |
| CN204894534U (en) * | 2015-08-24 | 2015-12-23 | 珠海天威飞马打印耗材有限公司 | Digit optical processing three -dimensional inkjet printer |
| CN105922595A (en) * | 2016-06-27 | 2016-09-07 | 珠海天威飞马打印耗材有限公司 | Photocuring three-dimensional printer and three-dimensional object molding method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111958964A (en) * | 2020-09-08 | 2020-11-20 | 江阴司特易生物技术有限公司 | 3D printer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106799836A (en) | High accuracy number light processes 3 D-printing and its Method of printing | |
| TWI526797B (en) | Calibration apparatus and calibration method for three dimensional printing apparatus | |
| CN204869689U (en) | Digit optical processing three -dimensional inkjet printer | |
| CN106827511A (en) | Strengthen digital light treatment three-dimensional printer and the Method of printing of three-dimensional body adhesive force | |
| CN204894534U (en) | Digit optical processing three -dimensional inkjet printer | |
| US8568646B2 (en) | Compensation of actinic radiation intensity profiles for three-dimensional modelers | |
| CN107379525B (en) | A kind of Method of printing spraying photosensitive polymer 3D printer | |
| CN105946237A (en) | Ultraviolet surface exposure rapid molding device used for making three-dimensional photoelasticity model | |
| CN106256014B (en) | The manufacturing method of imprinting apparatus, method for stamping and article | |
| US10753781B2 (en) | Three-dimensional printing device | |
| CN103935035B (en) | A kind of light source movable face shaped three dimensional printing shaping system | |
| CN107756814A (en) | Detecting system, method and the 3D printing equipment being applicable | |
| US20160129633A1 (en) | Three dimensional printing apparatus and three dimensional printing method | |
| CN105014970B (en) | A kind of molding equipment and its forming method of photocuring three-dimensional model | |
| WO2021004064A1 (en) | Photo-curing 3d printing device | |
| CN107225761A (en) | Gas circuit structure and the 3D printing equipment being applicable, Method of printing | |
| US10513058B2 (en) | 3-D printing method | |
| CN111761817A (en) | Large-format 3D printing method and device based on DLP | |
| CN106891523A (en) | A kind of digital light processes three-dimensional printer and its Method of printing | |
| CN106891522A (en) | Digital light treatment 3 D-printing and its Method of printing with function of making up the difference automatically | |
| CN106827516A (en) | Facilitate digital light treatment three-dimensional printer and Method of printing that three-dimensional body is separate | |
| CN105252775B (en) | A kind of three-dimensional model former and its forming method | |
| CN210477815U (en) | 3D printing system | |
| JP6764905B2 (en) | 3D printing equipment | |
| CN116277958A (en) | 3D printing forming method and device based on linear light source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170627 |
|
| RJ01 | Rejection of invention patent application after publication |