CN105729812B - The forming method of 3 D-printing device and three-dimensional body - Google Patents
The forming method of 3 D-printing device and three-dimensional body Download PDFInfo
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- CN105729812B CN105729812B CN201610255857.7A CN201610255857A CN105729812B CN 105729812 B CN105729812 B CN 105729812B CN 201610255857 A CN201610255857 A CN 201610255857A CN 105729812 B CN105729812 B CN 105729812B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
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- 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
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
Abstract
The present invention relates to a kind of 3 D-printing device and the forming method of three-dimensional body.3 D-printing device includes photosensitive resin feedway, endless belt conveyer, print platform, light processor, control device, tension adjustment wheel, collection scraper and accumulator tank.Control device is connected with photosensitive resin feedway, endless belt conveyer, print platform, light processor and tension adjustment wheel respectively, so as to realize the control action to these parts.The structure setting of this 3 D-printing device rationally, improves the shaping efficiency of three-dimensional body.
Description
Technical field
It is to be related to a kind of photocuring 3 D-printing device and three-dimensional specifically the present invention relates to 3 D-printing field
The forming method of object.
Background technology
It is three-dimensional（3D）Printing is based on Three Dimensional Design Model, to be molded by software hierarchy and numerical control, recycle laser
The modes such as beam, hot melt nozzle, illumination curing are by materials such as metal dust, ceramic powders, plastics, photosensitive resins by successively accumulating
The mode cohered is superimposed the technology of shaping, finally produces entity products.
Photocuring 3 D-printing（Stereolithography apparatus method, SLA）It is a kind of very important 3 D-printing method, it is led
It is to form three-dimensional body after successively solidifying to liquid light maleate resin using the light of certain frequency to want operation principle.
Digital light processing（DLP）Photocuring three-dimensional printer is the device of one of which SLA types.Digital light processing
（DLP）The operation principle of photocuring three-dimensional printer is to utilize DLP technologies, and light source is imaged using projecting apparatus, and light source successively solidifies
Liquid photosensitive resin, prints the higher three-dimensional body of resolution ratio, and its resolution ratio exceeds typical Fused Deposition Modeling（FDM）Class
The 3D printer of type.
DLP photocurings 3D printer mainly has software and hardware two parts.Hardware includes printer frame, projector light
Source, print platform and photosensitive resin groove.Print platform can move up and down in photosensitive resin groove, and in photosensitive resin groove
Equipped with photosensitive resin.The signal of video signal that software section is produced projects to photosensitive tree after digital processing by projector light source
Photosensitive resin in the bottom of fat groove, such photosensitive resin groove can instaneous polymerization into solid, and the photosensitive tree not contacted with light
Fat then keeps liquid, thus successively generates three-dimensional body in the print platform plane relative with photosensitive resin groove.
Publication No. discloses a kind of DLP three-dimensional printers for CN104085106A Chinese invention patent application, and it includes
Computer, electrical control gear, the forming tank of bottom plate light-permeable, vertical lifting mechanism and shaping objective table, shaping objective table peace
Loaded on the vertical spacing on vertical lifting mechanism, controlling to be molded between objective table and forming tank by vertical lifting mechanism.Beating
During printing three-dimensional body, computer disposal threedimensional model and layered shaping obtains certain thickness in order by threedimensional model
The slicing layer of some profile graphics, i.e. threedimensional model, computer is also connected with and controls electrical control gear, electrical control gear control
The lifting of vertical lifting mechanism driving shaping objective table processed, and DLP projector is controlled to the light-cured resin liquid level in forming tank
It is irradiated, DLP projectors are connected located at the lower section of forming tank and with computer, and DLP projector projects profile graphics
Bottom plate of the figure light path through forming tank transmits to irradiate and solidify liquid photocurable resin, so as to print layer by layer and three-dimensional mould
The corresponding three-dimensional body of type.
It is exactly that such photocuring three-dimensional is beaten but the structure of existing three-dimensional printer easily has a problem that
Print machine is in the solidification process of photosensitive resin, and its three-dimensional shaping efficiency is not high.
In addition, also there is Second Problem in the structure of this three-dimensional printer, after printing one layer, due to printing objects layer
Still in the photosensitive resin groove of liquid, so when print platform is moved up, printing objects layer and photosensitive resin groove bottom
Between will form vacuum, print platform needs to overcome printing objects layer by vacuum suction active force and possible adhesion
Power.Because printing objects layer and photosensitive resin groove bottom are rigid disengagements, the stripping result of printing objects layer can be so influenceed, by
It is that, come constructed object by way of successively printing, each printing objects layer is required to and photosensitive resin in DLP three-dimensional printers
Groove bottom completes once to be stripped, therefore can have a strong impact on the final molding effect of object, while can also influence printer overall
Service life.
The digital light processing three-dimensional printer provided in notification number CN204955433U Chinese utility model patent
Platform assembly includes the support Slab element vertically moved up and down；Print platform for carrying printing objects；Printing is flat
Platform is movably connected with support Slab element, so that the print platform is tilted in demoulding, be reset to horizontal level after demoulding.It is this
Scheme solves printing objects layer and the separation problem of photosensitive resin groove bottom to a certain extent, improves the flat of printing objects
Whole property.But, the structure of this platform assembly is complex, not only increases manufacturing cost, and its platform assembly in the application
Also easily occur precise decreasing even can not normal work the problem of.
The content of the invention
The main object of the present invention is to provide a kind of more reasonable, the more efficient 3 D-printing of three-dimensional body molding mode
Device.
It is a further object of the present invention to provide a kind of forming method of three-dimensional body.
To achieve these goals, the 3 D-printing device that the present invention is provided includes photosensitive resin feedway, annular and passed
Send band, print platform, light processor and control device；Endless belt conveyer can pass through ultraviolet light, and photosensitive resin feedway is contained
Equipped with photosensitive resin；Endless belt conveyer is used for the photosensitive resin for receiving the supply of photosensitive resin feedway, the one of endless belt conveyer
Part forms consolidation zone portion, and at least a portion of endless belt conveyer can transverse shifting；Print platform is arranged on consolidation zone portion
The first side and can be vertically moved relative to consolidation zone portion；Light processor is arranged on second side in consolidation zone portion；Control
Device processed is electrically connected with photosensitive resin feedway, endless belt conveyer, print platform and light processor respectively.
From such scheme, the structure setting of this 3 D-printing device rationally, improves the shaping effect of three-dimensional body
Rate.Although drawing defect present in prior art by the 3 D-printing device of DLP types in background technology（Printing effect is low
Under）, but also easily there is this defect, therefore the application of such scheme in other types of photocuring 3 D-printing device
It is not limited to the 3 D-printing device of DLP types.
One preferred scheme is to be accepted in endless belt conveyer on the surface of photosensitive resin provided with undertaking layer, photosensitive resin
Object can be peeled off on layer is accepted；It is teflon layer or layer of silica gel or laminated polyester film to accept layer, and endless belt conveyer is polyester
Film.
From such scheme, the setting for accepting layer can solve the problem that the Second Problem mentioned in background technology.And hold
It is Teflon to connect layer most preferably scheme, because teflon layer has the performance of high temperature resistant hyperpyrexia, and the property of itself is more
It is smooth and smooth, when printing objects depart from from teflon layer, in photosensitive tree when will avoid the existing photosensitive resin from solidifying
Vacuum suction effect or adhesive attraction that fat trough floor is produced.The translucency of polyester film is good, is highly suitable at digital light
The transmission for the light that reason device is launched, and it is suitable for undertaking photosensitive resin, is beneficial to the rapid shaping of three-dimensional body.
One preferred scheme is that support is provided with consolidation zone portion, between endless belt conveyer and light processor
Platform, support platform can pass through ultraviolet light.
From such scheme, the light that light processor is launched can be radiated at endless belt conveyer through support platform
On photosensitive resin on.Also, when print platform is moved in vertical direction, print platform may contradict endless belt conveyer
And make it that endless belt conveyer in the vertical direction is moved, and so will result in the decline of three-dimensional body formed precision, and prop up
Support platform can play a supporting role to endless belt conveyer, so as to avoid above mentioned problem.
One preferred scheme is that photosensitive resin feedway includes constant pressure groove, photosensitive resin spray equipment and liquid water
Flat detection means, one end of photosensitive resin spray equipment is connected with constant pressure groove, and the other end of photosensitive resin spray equipment is photosensitive
Resin spray is on endless belt conveyer, and liquid level detection means is used to detect that the thickness of the photosensitive resin on endless belt conveyer is equal
Even property.
From such scheme, liquid level detection means can aid in improving thickness of the photosensitive resin on endless belt conveyer
Uniformity is spent, it detects that signal can transmit to control system the delivery rate of feedback regulation photosensitive resin again.
One preferred scheme is that 3 D-printing device also includes tension adjustment wheel, and tension adjustment wheel is used to adjust annular
The tension force of conveyer belt.
From such scheme, the planarization of endless belt conveyer is improved, and then improve the printing precision of three-dimensional body.
One preferred scheme is that 3 D-printing device also includes collecting scraper, collects scraper and is located at consolidation zone portion
Downstream, collects scraper and is contacted with endless belt conveyer, and collecting scraper is used to scrape off the residual photosensitive resin on endless belt conveyer.
From such scheme, recover the planarization of endless belt conveyer in time, facilitate photosensitive resin feedway again
Certain thickness photosensitive resin is sprayed on endless belt conveyer.
Further preferred scheme is that 3 D-printing device also includes accumulator tank, and accumulator tank is used to store the photosensitive tree of residual
Fat.
From such scheme, it is possible to increase resource recovery, it is to avoid the waste of resource.
One preferred scheme is that 3 D-printing device also includes two rotating wheels, and two rotating wheels are supported on annular biography
Send the inner surface of band.
From such scheme, rotation flexibility and the operating efficiency of endless belt conveyer are improved.
The forming method of three-dimensional body, including following step：Photosensitive resin step is applied, endless belt conveyer is adjusted in tension force
Opened in the presence of whole wheel, photosensitive resin is applied on endless belt conveyer, while detecting the photosensitive tree carried on endless belt conveyer
The thickness evenness of fat；
The endless belt conveyer for being coated with photosensitive resin, is moved partially into consolidation zone by endless belt conveyer moving step
Portion；
Print platform moving step, print platform is moved to the direction in consolidation zone portion, until print platform and photosensitive tree
Fat is contacted；
Curing molding step, photosensitive resin solidifies in the presence of light processor in consolidation zone portion.
One preferred scheme is to be accepted in endless belt conveyer on the surface of photosensitive resin provided with undertaking layer, photosensitive resin
Object can be peeled off on layer is accepted；Light processor selects digital light processing devices；Endless belt conveyer is by performing recycling step
Reclaim the uncured photosensitive resin remained in curing molding step is performed on endless belt conveyer.
Further preferred scheme is that it is teflon layer or layer of silica gel or laminated polyester film to accept layer, and endless belt conveyer is
Polyester film, in curing molding step is performed, in consolidation zone portion, is provided between endless belt conveyer and light processor
Support platform.
Brief description of the drawings
Fig. 1 is the schematic diagram of 3 D-printing device embodiment of the present invention.
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment
As shown in figure 1, the 3 D-printing device of the present embodiment include photosensitive resin feedway 10, endless belt conveyer 20,
Print platform 30, light processor 40, control device 50, tension adjustment wheel 60, collection scraper 70, accumulator tank 80 and support platform
90.Endless belt conveyer 20 and support platform 90 are both transparent for ultraviolet light.Control device 50 respectively with photosensitive resin feedway 10,
Endless belt conveyer 20, print platform 30, light processor 40 and tension adjustment wheel 60 are connected, so as to realize the control to these parts
Make and use.
Photosensitive resin feedway 10 is loaded with photosensitive resin.Photosensitive resin feedway 10 includes constant pressure groove 11, photosensitive
Resin spray device 12 and liquid level detection means 13.Photosensitive resin is stored in constant pressure groove 11, photosensitive resin spray equipment
12 one end is connected with constant pressure groove 11, and photosensitive resin is sprayed on endless belt conveyer 20 by the other end of photosensitive resin spray equipment 12
On.Because constant pressure groove 11 takes the mode that constant pressure supplies photosensitive resin, so as to ensure that the spray of photosensitive resin spray equipment 12
Apply the stability of speed.Liquid level detection means 13 is used to detect that the thickness of the photosensitive resin on endless belt conveyer 20 is uniform
Property.
Endless belt conveyer 20 is preferably polyester film, and endless belt conveyer 20 is supplied for receiving photosensitive resin feedway 10
Photosensitive resin, and endless belt conveyer 20 accept photosensitive resin surface on be provided with as undertaking layer teflon layer（Not
Show）, photosensitive resin object can the stripping on the undertaking layer.A part for endless belt conveyer 20 forms consolidation zone portion 21,
In consolidation zone portion 21, support platform 90 is set between endless belt conveyer 20 and light processor 40.DLP 3 D-printing devices
Also include two rotating wheels 22, the display effect that two rotating wheels 22 are supported in the inner surface of endless belt conveyer 20, figure is presented
It is run-track shaped for class, in two rotating wheels 22 at least one be power wheel so that drive endless belt conveyer 20 along clockwise or
Rotate in an anti-clockwise direction.Relative to print platform 30 transverse shifting can occur for endless belt conveyer 20, and in print platform 30
The consolidation zone portion 21 formed below of vertical.
Print platform 30 is arranged on the upside of the longitudinal direction in consolidation zone portion 21, and it can be relative to consolidation zone portion
21 vertically move, and the mode that control print platform 30 is vertically moved can be mode or the side of cylinder-driven of screw rod transmission
Formula.Light processor 40 is arranged on the downside of the longitudinal direction of consolidation zone portion 21.Light processor 40 can specifically select DLP classes
The digital light processing devices of type, or select other light sources that liquid light maleate resin can be caused to solidify.
Tension adjustment wheel 60 is used for the tension force for adjusting endless belt conveyer 20, and tension adjustment wheel 60 specifically includes two tension force
Wheel, two tension adjustment wheels 60 are located at the upstream side of photosensitive resin feedway 10.Endless belt conveyer 20 is clamped in two tension force
Between wheel, so as to realize the tension adjustment function to endless belt conveyer 20, the planarization of three-dimensional body shaping is so relatively beneficial to.
3 D-printing device also includes collecting scraper, and collecting scraper is used to scrape off the residual photosensitive resin on endless belt conveyer.Accumulator tank
For storing residual photosensitive resin.
The forming method that the 3 D-printing device that the present embodiment is provided prepares three-dimensional body includes following step.Apply light
Quick resin steps, endless belt conveyer 20 is opened in the presence of tension adjustment wheel 60, and photosensitive tree is applied on endless belt conveyer 20
Fat, while detecting the thickness evenness of the photosensitive resin carried on endless belt conveyer 20.
The endless belt conveyer 20 for being coated with photosensitive resin, is moved partially into consolidation zone by endless belt conveyer moving step
Portion 21.
The moving step of print platform 30, print platform 30 is moved to the direction in consolidation zone portion 21, until print platform 30
Contacted with photosensitive resin.
Curing molding step, photosensitive resin occurs solid in the presence of digital light processing devices 40 in consolidation zone portion 21
Change.
In curing molding step is performed, support platform 90 plays support in consolidation zone portion 21 to endless belt conveyer 20
Effect.In addition, reclaiming the meeting on endless belt conveyer 20 in the curing molding step is performed by performing curing molding step
The uncured photosensitive resin of residual.
Above-mentioned print procedure can complete at least one layer of forming process of three-dimensional body, often complete beating for one layer of three-dimensional body
After print process, print platform 30 is moved a certain distance longitudinally upward, and endless belt conveyer 20 occurs to turn in the presence of rotating wheel 22
It is dynamic so that the part that endless belt conveyer 20 carries photosensitive resin is moved again to consolidation zone portion 21 and continues to complete three-dimensional
The forming process of object, after said process is repeated several times, then can complete the forming process of whole three-dimensional body.
Finally it should be noted that the invention is not restricted to above-mentioned embodiment, such as recovery in accumulator tank 80 is obtained
Photosensitive resin photosensitive resin feedway 10 is supplemented to by way of compression pump again.In addition, endless belt conveyer 20 can be
A part is transparent, and it is transparent in consolidation zone portion 21 to be for example, and the light source of digital light processing devices also can be through solid
Change region portion 21 and expose to photosensitive resin.It can be specifically teflon layer or layer of silica gel or laminated polyester film to accept layer（PET polyester
Film, PET is polyethylene terephthalate）Deng.These designs etc. are also within the claims of the present invention.
Claims (8)
1. 3 D-printing device, it is characterised in that including:
Photosensitive resin feedway, is loaded with photosensitive resin；
Endless belt conveyer, the endless belt conveyer can pass through ultraviolet light, and endless belt conveyer is used to receive the photosensitive resin supply
The photosensitive resin of unit feeding a, part for the endless belt conveyer forms consolidation zone portion, and the endless belt conveyer is at least
A part can transverse shifting；
Print platform, is arranged on first side in the consolidation zone portion and can be vertically moved relative to the consolidation zone portion；
Light processor, is arranged on second side in the consolidation zone portion；
Control device, respectively with the photosensitive resin feedway, the endless belt conveyer, the print platform and the light
Manage device electrical connection；
In the consolidation zone portion, support platform is provided between the endless belt conveyer and the light processor, it is described
Support platform can pass through ultraviolet light；
The photosensitive resin feedway includes constant pressure groove, photosensitive resin spray equipment and liquid level detection means, the light
One end of quick resin spray device is connected with the constant pressure groove, and the other end of the photosensitive resin spray equipment sprays photosensitive resin
It is coated on the endless belt conveyer, the liquid level detection means is used to detect the photosensitive resin on the endless belt conveyer
Thickness evenness.
2. 3 D-printing device according to claim 1, it is characterised in that：
Accepted in the endless belt conveyer provided with layer is accepted on the surface of the photosensitive resin, photosensitive resin object can be held described
Connect and peeled off on layer；
The undertaking layer is teflon layer or layer of silica gel or laminated polyester film, and the endless belt conveyer is polyester film.
3. 3 D-printing device according to claim 1, it is characterised in that：
The 3 D-printing device also includes tension adjustment wheel, and the tension adjustment wheel is located at the photosensitive resin feedway
Upstream side, the endless belt conveyer is clamped in the tension adjustment wheel, and the tension adjustment wheel is used to adjust the annular biography
Send the tension force of band.
4. 3 D-printing device according to claim 1, it is characterised in that：
The 3 D-printing device also includes collecting scraper, and the collection scraper is located at the downstream in the consolidation zone portion, institute
State collection scraper to contact with the endless belt conveyer, the residual that the collection scraper is used to scrape off on the endless belt conveyer is photosensitive
Resin;The 3 D-printing device also includes accumulator tank, and the accumulator tank is used to store the residual photosensitive resin.
5. the 3 D-printing device according to any one of Claims 1-4, it is characterised in that：
The 3 D-printing device also includes two rotating wheels, and two rotating wheels are supported on the interior table of the endless belt conveyer
Face.
6. the forming method of the three-dimensional body of 3 D-printing device, it is characterised in that the 3 D-printing device uses above-mentioned power
Profit requires the 3 D-printing device described in 1 to 5 any one；
The forming method of the three-dimensional body includes following step：
Photosensitive resin step is applied, endless belt conveyer opens in the presence of tension adjustment wheel, applied on the endless belt conveyer
Photosensitive resin is applied, while detecting the thickness evenness of the photosensitive resin carried on the endless belt conveyer；
The endless belt conveyer for being coated with photosensitive resin, is moved partially into consolidation zone portion by endless belt conveyer moving step；
Print platform moving step, print platform is moved to the direction in the consolidation zone portion, until the print platform and light
Quick resin contact；
Curing molding step, in the consolidation zone portion, is provided between the endless belt conveyer and the light processor
Support platform, photosensitive resin solidifies in the presence of light processor.
7. the forming method of three-dimensional body according to claim 6, it is characterised in that：
Accepted in the endless belt conveyer provided with layer is accepted on the surface of the photosensitive resin, photosensitive resin object can be held described
Connect and peeled off on layer；
The light processor selects digital light processing devices；
Endless belt conveyer is reclaimed in the curing molding step is performed on the endless belt conveyer by performing recycling step
The uncured photosensitive resin of residual.
8. the forming method of three-dimensional body according to claim 7, it is characterised in that：
The undertaking layer is teflon layer or layer of silica gel or laminated polyester film, and the endless belt conveyer is polyester film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610255857.7A CN105729812B (en) | 2016-04-22 | 2016-04-22 | The forming method of 3 D-printing device and three-dimensional body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610255857.7A CN105729812B (en) | 2016-04-22 | 2016-04-22 | The forming method of 3 D-printing device and three-dimensional body |
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| CN105729812A CN105729812A (en) | 2016-07-06 |
| CN105729812B true CN105729812B (en) | 2017-10-13 |
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| WO2021180997A1 (en) * | 2020-03-13 | 2021-09-16 | Barcelona Three Dimensional Printers, S. L. | Machine for additive manufacturing and related method of additive manufacturing |
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| WO2021180997A1 (en) * | 2020-03-13 | 2021-09-16 | Barcelona Three Dimensional Printers, S. L. | Machine for additive manufacturing and related method of additive manufacturing |
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