CN108790151A - The detecting system of photocuring 3D printing equipment - Google Patents
The detecting system of photocuring 3D printing equipment Download PDFInfo
- Publication number
- CN108790151A CN108790151A CN201810566481.0A CN201810566481A CN108790151A CN 108790151 A CN108790151 A CN 108790151A CN 201810566481 A CN201810566481 A CN 201810566481A CN 108790151 A CN108790151 A CN 108790151A
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- master control
- control system
- photocuring
- projection
- light
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
- B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
- B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention discloses the detecting systems of photocuring 3D printing equipment, including：Master control system for handling, storing, transmitting data information and the data for handling other module feedbacks；Projection module is used to receive the instruction of master control system, is again projected light pattern by UV light sources after video signal is handled；The reading code module light pattern that projection module projects for identification, and information data is fed back into master control system, the pre- threedimensional model for carrying out 3 D-printing is sliced by the master control system, and graphical identifier is added to the slice after slice, and graphical identifiers and slice information are stored, the image information of slice is transferred to projection module by the master control system, light pattern is projected the polymerizable liquid into magazine by projection module by UV light sources again after handling video signal, reading code module identifies the graphical identifiers in light pattern, and feed back information to master control system, the master control system can judge whether the light pattern of projection is correct according to the information of reading code module feedback.
Description
Technical field
It is especially that a kind of can realize that the light monitored in real time is solid in print procedure the present invention relates to increasing material manufacturing industry
Change the detecting system of 3D printing equipment.
Background technology
Three-dimensional printer is a kind of rapid prototyping machine, based on digital model file, with powdery metal or modeling
The adhesive materials such as material, obtain product by layer-by-layer printing.Three-dimensional printer is produced from it speed, material category
The advantages that more, better economic benefit, gradual expanded application.
Stereolithography method is three-dimensional printer rapid shaping technique practical earliest, with swashing for specific wavelength and intensity
Light focuses on photo-curing material surface, is allowed to, by point to line, by line to face consecutive solidification, complete the drawing performance of a level,
Then lifting platform moves the height of a slice in vertical direction, and 3 D-printing intermediary is pulled away from, and waits for that polymerizable liquid flows back
Another level of resolidification afterwards.It is layering in this way and constitutes a 3 D-printing intermediary, finally obtain product, that is, 3 D-printing
Object.Specifically, before the beginning of printing (3 D-printing), need to be sliced threedimensional model, obtain a certain number of
Then pattern in each slice is passed through digitlization or image conversion so that illumination pattern is corresponding with slice pattern by slice
And be radiated at photo-curing material and carry out illumination, make its polymerizing curable.DLP types 3 D-printing side wherein in photocuring 3 D-printing
Formula is welcome since it can realize the product manufacturing of high-precision details by market.DLP technologies are most by by each level
Pattern digitization, be then converted to optical signal and pattern be irradiated on photo-curing material liquid finally by the mode of projection,
To be created that 3 D-printing object.
In print procedure, the order of DLP ray machine projection images should be corresponding with threedimensional model slice order, DLP light
The time of machine projection image should be corresponding with the lifting platform pull-off time of 3 D-printing intermediary, if the above situation is asked
Topic, three-dimensional 3 D-printing intermediary structures will appear corresponding embodiment, i.e. Product Precision reduces, if DLP light in print procedure
Machine mistake figure situation is serious, then prints the three-dimensional 3 D-printing intermediary of completion and can not reach required precision, be scrap.DLP ray machines
The case where mistake figure, it is difficult to naked eyes in print procedure and distinguishes, when often completing to carry out quality inspection to 3 D-printing object after printing
It could find, if 3 D-printing object is the change of substandard product, the photo-curing material consumed is irreversible, causes wave
Take.So needing to research and develop a detecting system, the illumination pattern that photo-curing material is received can be detected in real time, be sentenced
Disconnected print procedure.
Invention content
The technical problem to be solved by the invention is to provide a kind of photocuring 3D printing equipments that can realize automation
The system detected in real time.
In order to solve the above technical problems, the detecting system of photocuring 3D printing equipment provided by the invention, the detection system
System is arranged in photocuring 3D printing equipment, and the photocuring 3D printing equipment is made of UV light sources, magazine and workbench,
Polymerizable liquid is filled in the magazine, the UV light sources are connected with optical projection system, the inspection of the photocuring 3D printing equipment
Examining system includes：Master control system, the master control system is for handling, storing, transmitting data information and handling other module feedbacks
Data；Projection module, the projection module are used to receive the instruction of master control system, pass through UV light sources after video signal is handled again
Light pattern is projected to the polymerizable liquid into magazine；Reading code module, projection module projects the reading code module for identification
Light pattern, and information data is fed back into master control system, the master control system cuts the pre- threedimensional model for carrying out 3 D-printing
Piece, and graphical identifier is added to the slice after slice, and graphical identifiers and slice information are stored, the master control system
The image information of slice is transferred to projection module by system, projection module video signal is handled after again by UV light sources by light pattern
It projects, reading code module identifies the graphical identifiers in light pattern, and feeds back information to master control system, the master control system
It can judge whether the light pattern of projection is correct according to the information of reading code module feedback.
After structures described above, compared with prior art, the present invention having the following advantages that：Master control system can
In real time according to the information of the graphical identifiers in the identification light pattern of reading code module feedback, whether to judge the light pattern projected
Correctly, to judge whether 3 D-printing process is smooth, this detecting system has real-time, efficient monitoring effect.
Further, further include the alarm system being connect with master control system, when master control system information judges the figure of light projection
When case is incorrect, the master control system assigns open command to warning system.
Further, the warning system is equipped with warning light or alarm bell.
Further, each slice is added different graphical identifiers by the master control system.
Further, the projection module includes DLP projection system, and the DLP projection system exports master control system
Video signal is again projected light by UV light sources by digital processing.
Further, the projection module includes LCD display and LCD control modules, and the LCD control modules will be led
The video signal of control system output is transferred to LCD display after digital processing, which shows corresponding pattern,
The UV light sources irradiation LCD display is projected out corresponding light pattern.
Further, the graphical identifier is bar code or Quick Response Code.
Further, block piece is equipped between the projection and polymerizable liquid of the graphical identifier.
Description of the drawings
Fig. 1 is the structural schematic diagram of photocuring 3D printing equipment detecting system device therefor in the present invention；
Fig. 2 is the structural schematic diagram of another equipment used in photocuring 3D printing equipment detecting system in the present invention；
Fig. 3 is the module map of photocuring 3D printing equipment detecting system in the present invention；
Fig. 4 is shown using partial structurtes of the photocuring 3D printing equipment of the monitoring system of the present invention in print procedure
It is intended to.
Wherein：1, workbench；2, magazine；3, UV light sources；4, polymerizable liquid；5,3 D-printing intermediary；6, code reader；
7, graphical identifiers；8, pre-print pattern；9,3 D-printing face
Specific implementation mode
Invention is described in more detail With reference to embodiment.
It is to be understood that when an element is mentioned on another element "upper", " being attached to " another element, " being connected to "
On another element, with another element " in conjunction with ", " contact " another element etc. whens, can directly on another element, be attached to
On another element, it is connected on another element, is combined with another element and/or contact another element or cental element also may be present
Part.On the contrary, when on an element referred " directly on another element ", " being attached directly to " another element, " being directly connected to
To " on another element, with another element " binding directly " or " being in direct contact " another element when, intermediary element is not present.Ability
Field technique personnel will be further understood that a structure for mentioning arrangement " adjacent " with another component or component can be adjacent with this is superimposed upon
Part on component or under the adjacent members.
Space correlation term, such as " lower section ", " being less than ", " lower part ", " top ", " top " can be to be easy to retouch herein
It states and uses to describe the relationship of element as shown in the drawings or component and other one or more elements or component.It manages
Solution, space correlation term is also intended in addition to the orientation described in attached drawing to be taken including device in use or running difference
To.For example, if reversing the device in attached drawing, it will if being described as be in other elements or component " lower section " or the element of " following "
It is orientated in other elements or component " top ".Therefore, exemplary term " lower section " may include above and below both orientations.Device
Part can be orientated (be rotated by 90 ° or other orientations) and space correlation descriptor used herein is interpreted accordingly in other ways.
Similarly, unless clearly otherwise dictating, term " upward ", " downward ", " vertical ", "horizontal" etc. are only used for explaining herein
Explanation.
3D printing equipment using photocuring principle includes two kinds of printing types：
One, photocuring 3D printing equipment structure is from top to bottom workbench 1, magazine 2, UV light sources 3, wherein UV light respectively
Source 3 is arranged in the lower section of magazine 2, as shown in Figure 1, the bottom of magazine 2 is transparent, polymerizable liquid 4 is filled in magazine 2, can be gathered
It closes liquid 4 and receives the surface that illumination is cured, referred to as 3 D-printing face 9, the i.e. bottom surface of 2 inner wall of magazine in magazine 2, print
Process is that UV light sources 3 irradiate 2 bottom surface of magazine from the bottom up, and UV light penetrates 2 bottom of magazine, the polymerizable liquid in 3 D-printing face 9
Body 4 is cured under the induction of light, and the workbench 1 is connected with mechanical actuation device, and workbench 1 is by 3 D-printing intermediary 5
(three-dimensional structure formed after 4 photocuring of polymerizable liquid) is lifted up, after polymerizable liquid 4 flows back into 3 D-printing face 9, then
Continue to receive UV illumination and be cured, successively manufactures in this way, form complete three-dimensional article；
Two, photocuring 3D printing equipment structure is from top to bottom UV light sources 3, magazine 2, workbench 1 respectively, wherein being molded
Platform 1 is arranged in the lower section of magazine 2, as shown in Fig. 2, being filled with polymerizable liquid 4 in magazine 2, polymerizable liquid 4 is in magazine 2
Receiving the surface that illumination is cured, referred to as 3 D-printing face 9, i.e., the liquid level of polymerizable liquid 4, print procedure are in magazine 2,
UV light sources 3 irradiate magazine 2 from top to bottom, and UV illumination is mapped to polymerizable liquid 4,3 D-printing face 9 polymerizable liquid 4 in light
Induction under be cured, the workbench 1 is connected with mechanical actuation device, and workbench 1 is (polymerizable by 3 D-printing intermediary 5
The three-dimensional structure formed after 4 photocuring of liquid) it is pulled away from downwards, after polymerizable liquid 4 flows back into 3 D-printing face 9, it is further continued for receiving
Cured to UV illumination, successively manufactured in this way, form complete three-dimensional article, in print procedure, workbench 1 is beaten with the three-dimensional
Printing intermediary 5 is immersed in polymerizable liquid 4.
Before implementing 3 D-printing, it is necessary first to carry out three-dimensional modeling to pre- 3 D-printing object, then master control system will
Threedimensional model is sliced, and then for being always sliced and model structure is analyzed, master control system calculates in every layer of slice
The thickness of light pattern and every layer of slice, i.e. the time of the required UV illumination of corresponding every layer of slice, master control system will utilize upper
The light application time that data system controls UV light sources 3 is stated, the displacement with the light pattern and workbench of projection module projection, to
Realize 3 D-printing.
As shown in Figure 3, Figure 4, the principle of this photocuring 3 D-printing detecting system is by above-mentioned control system, adding
Enter graphical identifiers 7 to generate and reading code identifying system, the increase graphical identifiers 7 on slice at every layer, every layer in print procedure
The light pattern of projection carries graphical identifiers 7, by reading code identifying system, can recognize that corresponding slice, realizes for every
Whether layer light pattern, which projects, is detected, i.e., the detection at the time point of light pattern projection, concrete implementation mode are：The main master control
System is connect with projection module, UV light sources 3, and master control system is for handling, storing, transmitting data information and handling other modules
The data of feedback；Projection module, the projection module are used to receive the instruction of master control system, pass through UV after video signal is handled again
Light source 3 projects light pattern；Threedimensional model is sliced by the master control system, and adds pattern identification to the slice after slice
Symbol 7, and graphical identifiers 7 and the pattern-information of slice are stored, the master control system transmits the image information of slice
To projection module, the image information of every layer of slice includes graphical identifiers 7 and pre-print pattern 8, and the projection module is by image
The light pattern that every layer is sliced is projected successively to 3 D-printing face 9 by UV light sources 3 again after signal processing, the master control system is also
It is connected with reading code module, which includes code reader 6, the figure identification in the recognizable light pattern projected of code reader 6
Symbol 7, information data is fed back to master control system by reading code module, and the master control system can be sentenced according to the information of reading code module feedback
Whether the light pattern of disconnected projection is correct.
Since the material used in photocuring 3 D-printing is generally photosensitive resin, after its higher solidification of viscosity of photosensitive resin
The elasticity of material is better, and elastic material has significant market, in the highly viscous photosensitive resin of 3 D-printing, since it is viscous
Property it is big, therefore mobility is low, so just relatively long the time required to the reflux of resin in print procedure, the solution used in industry
Mode is the increase " black picture " between each slice, i.e., increases the completely black figure of a period of time between the light pattern being each sliced
Case, i.e. UV light sources 3 project pattern-free by projection module, and without curing reaction on 3 D-printing face 9, i.e., resin can in the period
Reflux is that the light pattern in 3 D-printing face 9 is whether there is or not alternate, so master control system using such 3 D-printing pattern
Identical graphical identifier 7 can be added to all slices, when having light pattern on 3 D-printing face 9, i.e., code reader 6 can be known
Other graphical identifier 7, when matting pattern on 3 D-printing face 9, i.e. 6 None- identified of code reader, then master control system may determine that
Whether the time point of every layer of slice projection accurate, but None- identified to the corresponding order of slice, for slice projection
It repeats, incorrect order or the problems such as drop ply, master control system then None- identified.
For be not necessarily between slice increase " black picture ", can every layer of light of successive projection slice 3 D-printing mould
Formula, master control system needs to increase different graphical identifiers 7 to each slice, then when the light pattern for converting each layer slice projection
When, master control system can identify, it is preferred that master control system stores the graphical identifiers 7 of every layer of slice and this layer slice
Image information, after reading code module feeds back information data, master control system can analyze data, judge the light figure projected in real time
Case is which layer slice, and whether the order so as to judge the light pattern projected in print procedure is correct, can detect and cut
Whether piece projection repeat, incorrect order or the problems such as drop ply.
Wherein graphical identifiers 7 are not be overlapped with pre-print pattern 8 in light pattern, and preferred, and the figure being projected out is known
Block piece Fu not be equipped between 7 and polymerizable liquid 4, which can be part opaque on magazine 2 or in three-dimensional
One piece of barn door being consistent with 7 shape of graphical identifiers is set on printing surface 9.
Specifically, above-mentioned graphical identifiers 7, preferably bar code or three codes.
Preferably, this photocuring 3 D-printing detecting system further includes alarm system, the alarm system and master control system
Connection, when master control system judges the light pattern projected in print procedure when something goes wrong, the master control system is under warning system
Up to open command, wherein warning system is equipped with warning light or alarm bell, when master control system thinks print procedure when something goes wrong,
The master control system assigns open command to warning light or alarm bell, and the out code of warning light or alarm bell needs are defeated
Enter end to assign, that is, need to think to be closed, has ensured that operator has found the print procedure problem.
Embodiment one
Projection module in above-mentioned photocuring 3 D-printing detecting system is DLP projection system, the DLP projection system packet
Lens, dmd chip and projection lens are included, the video signal that master control system exports is passed through dmd chip by the DLP projection system
Digital processing is carried out, then the UV light of UV light sources 3 passes through the processing of dmd chip by lens, then by projection lens, be projected out
The light pattern being each sliced.
Embodiment two
Projection module in above-mentioned photocuring 3 D-printing detecting system be include LCD display and LCD control mould
The video signal that master control system exports is transferred to LCD display by block, the LCD control modules after digital processing, the LCD
After display screen shows that corresponding pattern, the UV light sources 3 irradiate LCD display, it is projected out corresponding light pattern i.e. slice
Light pattern.
The above is only preferably feasible implementation example of the invention, cannot therefore be the interest field for limiting to the present invention,
For those skilled in the art, other all made with technical scheme of the present invention and technical concept are various corresponding
Change should all belong within the protection domain of the claims in the present invention.
Claims (8)
1. the detecting system of photocuring 3D printing equipment, which is arranged in photocuring 3D printing equipment, described
Photocuring 3D printing equipment is made of UV light sources, magazine and workbench, and polymerizable liquid, feature are filled in the magazine
It is, the UV light sources are connected with optical projection system, and the detecting system of the photocuring 3D printing equipment includes：
Master control system, the master control system for handling, storing, transmitting data information and the data for handling other module feedbacks；
Projection module, the projection module are used to receive the instruction of master control system, again will by UV light sources after video signal is handled
Light pattern projects；
Reading code module, the reading code module light pattern that projection module projects for identification, and information data is fed back into master
Control system,
The pre- threedimensional model for carrying out 3 D-printing is sliced by the master control system, and adds pattern identification to the slice after slice
Symbol, and graphical identifiers and slice information are stored, the image information of slice is transferred to projective module by the master control system
Light pattern is projected the polymerizable liquid into magazine, reading code by block, projection module by UV light sources again after handling video signal
Module identifies the graphical identifiers in light pattern, and feeds back information to master control system, and the master control system can be according to reading code
The information of module feedback judges whether the light pattern of projection is correct.
2. the detecting system of photocuring 3D printing equipment according to claim 1, which is characterized in that further include and master control
The alarm system of system connection, when master control system information judges that the pattern of light projection is incorrect, the master control system is to alarm
System assigns open command.
3. the detecting system of photocuring 3D printing equipment according to claim 2, which is characterized in that the warning system
Equipped with warning light or alarm bell.
4. the detecting system of photocuring 3D printing equipment according to claim 1, which is characterized in that the master control system
Each slice is added into different graphical identifiers.
5. the detecting system of photocuring 3D printing equipment according to claim 1, which is characterized in that the projection module
Including DLP projection system, the video signal that the DLP projection system exports master control system passes through UV light again by digital processing
Source projects light.
6. the detecting system of photocuring 3D printing equipment according to claim 1, which is characterized in that the projection module
Including LCD display and LCD control modules, the video signal that the LCD control modules export master control system is by number
LCD display is transferred to after processing, which shows that corresponding pattern, the UV light sources irradiation LCD display are projected out
Corresponding light pattern.
7. the detecting system of photocuring 3D printing equipment according to claim 1, which is characterized in that the pattern identification
Symbol is bar code or Quick Response Code.
8. the detecting system of photocuring 3D printing equipment according to claim 1, which is characterized in that the pattern identification
Block piece is equipped between the projection and polymerizable liquid of symbol.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810566481.0A CN108790151B (en) | 2018-06-05 | 2018-06-05 | Detection system of photocuring three-dimensional printing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810566481.0A CN108790151B (en) | 2018-06-05 | 2018-06-05 | Detection system of photocuring three-dimensional printing equipment |
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| CN108790151B CN108790151B (en) | 2021-04-20 |
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| CN110435136A (en) * | 2019-08-06 | 2019-11-12 | 武汉卫亚汽车零部件有限公司 | A kind of integrally formed technique of automotive seat connecting rod |
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| CN108790151B (en) | 2021-04-20 |
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