CN105082541A - 3D (three dimensional) printer and 3D printing system - Google Patents
3D (three dimensional) printer and 3D printing system Download PDFInfo
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- CN105082541A CN105082541A CN201510483747.1A CN201510483747A CN105082541A CN 105082541 A CN105082541 A CN 105082541A CN 201510483747 A CN201510483747 A CN 201510483747A CN 105082541 A CN105082541 A CN 105082541A
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Abstract
The invention provides a 3D (three dimensional) printer and a 3D printing system, which are used for solving the problem that since a printing layer and the bottom of an accommodating groove are rigidly separated in the prior art, the surface smoothness of a model is low. The 3D printer comprises a printing platform, a display panel and a light source, wherein the display panel is arranged opposite to the printing platform; the light source is arranged at one side, away from the printing platform, of the display panel; a transparent protection layer is arranged at one side, facing the printing platform, of the display panel; and one side, facing the printing platform, of the transparent protection layer comprises a plurality of lens structures.
Description
Technical field
The present invention relates to printing technique field, particularly relate to a kind of 3D printer and 3D print system.
Background technology
It is novel rapid prototyping & manufacturing technology that 3D prints.It is manufactured a product by multiple-layer stacked growing principle.It can overcome the special construction obstacle that traditional machining cannot realize.The simplification that can realize any complex components is produced, at present, 3D printing technique is roughly divided into following several technology: light-cured type, fused glass pellet, the manufacture of nonwoven fabric from filaments body, selective laser sintering, selective laser melting etc. are several, 3D printing technique due to light-cured type has that high-res, molded surface are smooth, dimensional accuracy advantages of higher, is widely used in production technology.
At present, for Stereolithography 3D printing technique, its implementation procedure is: utilize liquid crystal display (LiquidCrystalDisplay, LCD) image-forming principle, under the driving of microcomputer and display drive circuit, provide picture signal by computer program.LCD screen occurs optionally transparent region.Then, under the irradiation of ultraviolet source, the images transparent region of LCD screen intercepts ultraviolet light and reduces, and in nontransparent region, ultraviolet light is stopped.Ultraviolet light through liquid crystal display forms ultraviolet light image region.Be placed with the storage tank for holding curable liquid resin on the surface of LCD screen, the bottom of this storage tank is transparent membrane.In the nontransparent region of liquid crystal display due to without Ultraviolet radiation, therefore the liquid photocurable resin of this part is not arrived by UV light irradiates, still keeps liquid; In the position corresponding with optionally transparent region, ultraviolet light is irradiated to liquid photocurable resin through transparent membrane, make to be produced curing reaction by the liquid resin of UV-irradiation, thus make the liquid resin be irradiated to become solid-state, form the thin layer needing the model printed, repeatedly repeat this print procedure, the simplification that can realize any complex components is produced.
But, because liquid resin instaneous polymerization after being subject to UV-irradiation becomes solid-state printable layer, and do not keep liquid with the resin of ultraviolet light exposure, thus between printable layer and the bottom of resin storage tank, form vacuum, make printable layer be subject to hydraulic pressure and atmospheric acting in conjunction power.Bottom due to current storage tank is generally the rigid material such as glass or acrylic material, certain deformation cannot be produced in the bottom of storage tank, therefore print platform to overcome own wt and gas, hydraulic coupling above carried, and needs larger external force, make the rigid disengagement in the bottom of printable layer and storage tank, affect the stripping result of printable layer, and then affect the molding effect of model, cannot the fineness on lift scheme surface.
Summary of the invention
Embodiments provide a kind of 3D printer and 3D print system, for solving the lower problem of the model surface fineness that causes because of the rigid disengaging in bottom of printable layer and storage tank in prior art.
Embodiments provide a kind of 3D printer, comprising: print platform, the display floater be oppositely arranged with described print platform, be positioned at the light source of described display floater away from described print platform side; Described display floater is provided with protective clear layer towards the side of described print platform, and described protective clear layer comprises multiple lens arrangement towards the side of described print platform.
The 3D printer that the embodiment of the present invention provides comprises: print platform, the display floater be oppositely arranged with described print platform and be positioned at the light source of described display floater away from described print platform side; Wherein, described display floater is provided with protective clear layer towards the side of described print platform, and described protective clear layer comprises multiple lens arrangement towards the side of described print platform.Because described display floater is provided with protective clear layer towards the side of described print platform, described display floater can serve as the storage tank holding printed material, and therefore described 3D printer does not need to arrange storage tank again, simplifies the structure of 3D printer; And; because described protective clear layer comprises multiple lens arrangement towards the side of described print platform; after printed material is cured as printable layer; vacuum can not be formed between printable layer and protective clear layer; make printable layer can be easy to throw off from the end of storage tank; be conducive to improving the fineness of model surface, improve the molding effect of model, thus the problem that the fineness solving the model surface caused because of the rigid disengagement in bottom of printable layer and storage tank in prior art is not high.
Preferably, the face of described lens arrangement projection is exiting surface, and described exiting surface is hemisphere face or half ellipsoidal surface.
Due to the difference of refractive index; the light sent when light source is after the lens arrangement that described exiting surface is hemisphere face or half ellipsoidal surface gathers outgoing; light through described lens arrangement focuses on the center of described lens mostly; the liquid printed material rapid solidification of position, described lens centre is made to form printable layer; stop the light that sends of light source by during described protective clear layer to nontransparent regional diffusion; avoid the liquid printed material in nontransparent region solidification occurs to manifest because being subject to the irradiation of the light of diffuse transmission, be conducive to the dimensional accuracy improving model.
Preferably, the diameter of described lens arrangement is 50 ~ 900 μm.
When the diameter of lens arrangement is 50 ~ 900 μm; the light through described lens arrangement not only can be made mostly to focus on the center of described lens; and then make the liquid printed material rapid solidification of position, described lens centre form printable layer; stop the light that sends of light source by during described protective clear layer to nontransparent regional diffusion, the diameter because of described lens arrangement can also be avoided simultaneously excessive and cause solidifying uneven problem.
Preferably, described lens arrangement is uniformly distributed in the row direction with on column direction.
Described lens arrangement in the row direction with column direction on be uniformly distributed time, be conducive to strengthening being uniformly distributed of light further, printable layer solidified more even, improve the Forming Quality of model further.
Preferably, described 3D printer also comprise be positioned at described protective clear layer periphery and the sealed plastic box be connected with described protective clear layer, described sealed plastic box and described protective clear layer form cavity, for holding printed material.
By arranging the sealed plastic box be connected with described protective clear layer at described protective clear layer periphery, described sealed plastic box and described protective clear layer is made to form cavity, for holding liquid printed material.
Preferably, described protective clear layer adopts tempered glass materials.
When described protective clear layer adopts tempered glass materials to make, described protective clear layer can bear certain pulling force and deformation not occur in the process of the demoulding, is conducive to the fineness and the Forming Quality that improve model surface.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of 3D printer, comprising: print platform, the display floater be oppositely arranged with described print platform and be positioned at the light source of described display floater away from described print platform side; Described 3D printer also comprises and is positioned at the storage tank for hold printed material of described display floater towards the side of described print platform, described storage tank comprises transparent bottom, and described transparent bottom faces comprises multiple lens arrangement to the side of described print platform.
The 3D printer that the embodiment of the present invention provides comprises: comprising: print platform, the display floater be oppositely arranged with described print platform, be positioned at described display floater away from described print platform side light source, be positioned at the storage tank for hold printed material of described display floater towards the side of described print platform; Wherein, described storage tank comprises transparent bottom, and described transparent bottom faces comprises multiple lens arrangement to the side of described print platform.Because described transparent bottom faces comprises multiple lens arrangement to the side of described print platform, after printed material is cured as printable layer, vacuum can not be formed between printable layer and transparent bottom, make printable layer can be easy to throw off from the end of storage tank, be conducive to the fineness improving model surface, improve the molding effect of model, effectively solve the problem that the fineness of the model surface caused because of the rigid disengagement in bottom of printable layer and storage tank in prior art is not high.
Preferably, the face of described lens arrangement projection is exiting surface, and described exiting surface is hemisphere face or half ellipsoidal surface.
Due to the difference of refractive index; the light sent when light source is after the lens arrangement that described exiting surface is hemisphere face or half ellipsoidal surface gathers outgoing; light through described lens arrangement focuses on the center of described lens mostly; the liquid printed material rapid solidification of position, described lens centre is made to form printable layer; stop the light that sends of light source by during described protective clear layer to nontransparent regional diffusion; avoid the liquid printed material in nontransparent region solidification occurs to manifest because being subject to the irradiation of the light of diffuse transmission, be conducive to the dimensional accuracy improving model.
Preferably, the diameter of described lens arrangement is 50 ~ 900 μm.
When the diameter of lens arrangement is 50 ~ 900 μm; the light through described lens arrangement not only can be made mostly to focus on the center of described lens; and then make the liquid printed material rapid solidification of position, described lens centre form printable layer; stop the light that sends of light source by during described protective clear layer to nontransparent regional diffusion, the diameter because of described lens arrangement can also be avoided simultaneously excessive and cause solidifying uneven problem.
Preferably, described lens arrangement is uniformly distributed in the row direction with on column direction.
Described lens arrangement in the row direction with column direction on be uniformly distributed time, be conducive to strengthening being uniformly distributed of light further, printable layer solidified more even, improve the Forming Quality of model further.
Preferably, described protective clear layer adopts tempered glass materials.
When described protective clear layer adopts tempered glass materials to make, described protective clear layer can bear certain pulling force and deformation not occur in the process of the demoulding, is conducive to the fineness and the Forming Quality that improve model surface.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of 3D print system, and described 3D print system comprises above-mentioned 3D printer.
Accompanying drawing explanation
The cross-sectional view of a kind of 3D printer that Fig. 1 provides for the embodiment of the present invention one;
Fig. 2 provides the cross-sectional view of another kind of 3D printer for the embodiment of the present invention one;
The plan structure schematic diagram of Fig. 3 is the exiting surface of lens arrangement in the embodiment of the present invention when being ellipsoid protective clear layer;
The plan structure schematic diagram of Fig. 4 is the exiting surface of lens arrangement in the embodiment of the present invention when being sphere protective clear layer;
Fig. 5 be in the embodiment of the present invention light through the path schematic diagram in lens arrangement time;
Fig. 6 is the intensity distribution intention of the light of scioptics structure in the embodiment of the present invention;
The cross-sectional view comprising the 3D printer of sealed plastic box structure that Fig. 7 provides for the embodiment of the present invention one;
The cross-sectional view of the 3D printer that Fig. 8 provides for the embodiment of the present invention two.
Detailed description of the invention
Embodiments provide a kind of 3D printer and 3D print system, for solving the lower problem of the model surface fineness that causes because of the rigid disengaging in bottom of printable layer and storage tank in prior art.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention one provides a kind of 3D printer, see Fig. 1; As can be seen from Figure 1, described 3D printer comprises: print platform 11, the display floater 12 be oppositely arranged with described print platform, is positioned at the light source 13 of described display floater away from described print platform side; Described display floater 12 is provided with protective clear layer 14 towards the side of described print platform, described protective clear layer 14 comprises multiple lens arrangement 15 towards the side of described print platform 11.
Concrete; see Fig. 2; described display floater 12 also comprises the first display base plate 121 and the second display base plate 122; wherein; described first display base plate 121 is positioned at the side of described second display base plate 122 towards print platform 11, and described protective clear layer 14 is positioned at the side of described first display base plate 121 towards print platform 11.
In the embodiment of the present invention, described light source 13 generally adopts ultraviolet source, because ultraviolet source has the high advantage of energy, when therefore adopting ultraviolet source irradiation printed material, liquid UV materials rapid solidification can be made to form printable layer, be conducive to enhancing productivity.
The 3D printer that the embodiment of the present invention provides comprises: print platform, the display floater be oppositely arranged with described print platform and be positioned at the light source of described display floater away from described print platform side; Wherein, described display floater is provided with protective clear layer towards the side of described print platform, and described protective clear layer comprises multiple lens arrangement towards the side of described print platform.Because described display floater is provided with protective clear layer towards the side of described print platform, described display floater can serve as the storage tank holding printed material, and therefore described 3D printer does not need to arrange storage tank again, simplifies the structure of 3D printer; And; because described protective clear layer comprises multiple lens arrangement towards the side of described print platform; after printed material is cured as printable layer; vacuum can not be formed between printable layer and protective clear layer; make printable layer can be easy to throw off from the end of storage tank; be conducive to improving the fineness of model surface, improve the molding effect of model, effectively solve the problem that the fineness of the model surface caused because of the rigid disengagement in bottom of printable layer and storage tank in prior art is not high.
Further, there is refraction and appear from alternatively non-transparent region in the light sent to prevent light source, the face of described lens arrangement 15 projection is exiting surface, and described exiting surface is hemisphere face or half ellipsoidal surface when transmission display panel.See Fig. 3 and Fig. 4, the plan structure schematic diagram of wherein Fig. 3 is the exiting surface of lens arrangement in the invention process when being ellipsoid protective clear layer, the plan structure schematic diagram of Fig. 4 is the exiting surface of lens arrangement in the embodiment of the present invention when being sphere protective clear layer.
See Fig. 5 and Fig. 6, due to the difference of refractive index, the light sent when light source is after the lens arrangement that described exiting surface is hemisphere face or half ellipsoidal surface gathers outgoing, light through described lens arrangement focuses on the center of described lens mostly, the liquid printed material rapid solidification of position, described lens centre is made to form printable layer, stop the light that sends of light source by during described protective clear layer to nontransparent regional diffusion, avoid the liquid printed material in nontransparent region because being subject to the irradiation of the light of diffuse transmission and solidification occurs manifesting, be conducive to the dimensional accuracy improving model.
Further, the diameter of described lens arrangement 15 is 50 ~ 900 μm.
When the diameter of lens arrangement is 50 ~ 900 μm; the light through described lens arrangement not only can be made mostly to focus on the center of described lens; and then make the liquid printed material rapid solidification of position, described lens centre form printable layer; stop the light that sends of light source by during described protective clear layer to nontransparent regional diffusion, the diameter because of described lens arrangement can also be avoided simultaneously excessive and cause solidifying uneven problem.
Further, described lens arrangement is uniformly distributed in the row direction with on column direction.Described lens arrangement 15 spacing is in the row direction equal with spacing in a column direction, and the spacing namely in the row direction between two adjacent lens arrangements equals the spacing in a column direction between two adjacent lens arrangements; Wherein, the spacing between described two adjacent lens arrangements is the spacing of the central shaft of two lens.
Described lens arrangement in the row direction with column direction on be uniformly distributed time, be conducive to strengthening being uniformly distributed of light further, printable layer solidified more even, improve the Forming Quality of model further.
Further, see Fig. 7, described 3D printer also comprise be positioned at described protective clear layer periphery and the sealed plastic box 16 be connected with described protective clear layer, described sealed plastic box 16 forms cavity, for holding printed material with described protective clear layer 14.In the embodiment of the present invention, photosensitive resin material is preferably selected to be printed material.
Further, described protective clear layer adopts tempered glass materials.
When described protective clear layer adopts tempered glass materials to make; described protective clear layer can bear certain pulling force and deformation not occur in the process of the demoulding; make can combine closely between the printable layer of formation, be conducive to the fineness and the Forming Quality that improve model surface.Further, tempered glass materials does not have viscosity, and the fineness on printable layer surface after therefore reduce further demoulding difficulty and promoting the demoulding, described protective clear layer can also adopt the rigid transparent material such as acrylic or simple glass to be formed in addition.
Based on same inventive concept, the embodiment of the present invention two additionally provides a kind of 3D printer, see Fig. 8, described 3D printer comprises: print platform 11, the display floater 81 be oppositely arranged with described print platform and be positioned at the light source 13 of described display floater away from described print platform side; Described 3D printer also comprises and is positioned at the storage tank 82 for hold printed material of described display floater 81 towards the side of described print platform 11, described storage tank 82 comprises transparent bottom 83, and described transparent bottom 83 comprises multiple lens arrangement 15 towards the side of described print platform.In addition, described storage tank also comprises the periphery being positioned at described transparent bottom 83 and the sidewall 84 be connected with the transparent bottom 83 of described storage tank.
Concrete, described display floater 81 also comprises the first display base plate 121 and the second display base plate 122, and wherein, described first display base plate 121 is positioned at the side of described second display base plate 122 towards print platform 11.
In the embodiment of the present invention, described light source 13 generally adopts ultraviolet source, because ultraviolet source has the high advantage of energy, when therefore adopting ultraviolet source irradiation printed material, liquid UV materials rapid solidification can be made to form printable layer.The sidewall 84 of described storage tank can adopt sealed plastic box material to be formed.
The 3D printer that the embodiment of the present invention provides comprises: comprising: print platform, the display floater be oppositely arranged with described print platform, be positioned at described display floater away from described print platform side light source, be positioned at the storage tank for hold printed material of described display floater towards the side of described print platform; Wherein, described storage tank comprises transparent bottom, and described transparent bottom faces comprises multiple lens arrangement to the side of described print platform.Because described transparent bottom faces comprises multiple lens arrangement to the side of described print platform, after printed material is cured as printable layer, vacuum can not be formed between printable layer and transparent bottom, make printable layer can be easy to throw off from the end of storage tank, be conducive to the fineness improving model surface, improve the molding effect of model, effectively solve the problem that the fineness of the model surface caused because of the rigid disengagement in bottom of printable layer and storage tank in prior art is not high.
Further, described transparent bottom adopts tempered glass materials.
When described transparent bottom adopts tempered glass materials to make, described transparent bottom can be born certain pulling force and deformation not occur in the process of the demoulding, make can combine closely between the printable layer of formation, be conducive to the fineness and the Forming Quality that improve model surface.Further, tempered glass materials does not have viscosity, the fineness on printable layer surface after therefore reduce further demoulding difficulty and promoting the demoulding.In addition described transparent bottom can also adopt the rigid transparent material such as acrylic or simple glass to be formed
Further, there is refraction and appear from alternatively non-transparent region in the light sent to prevent light source, the face of described lens arrangement 15 projection is exiting surface, and described exiting surface is hemisphere face or half ellipsoidal surface when transmission display panel.See Fig. 3 and Fig. 4, the plan structure schematic diagram of wherein Fig. 3 is the exiting surface of lens arrangement in the invention process when being ellipsoid protective clear layer, the plan structure schematic diagram of Fig. 4 is the exiting surface of lens arrangement in the embodiment of the present invention when being sphere protective clear layer.
See Fig. 5 and Fig. 6, due to the difference of refractive index, the light sent when light source is after the lens arrangement that described exiting surface is hemisphere face or half ellipsoidal surface gathers outgoing, light through described lens arrangement focuses on the center of described lens mostly, the liquid printed material rapid solidification of position, described lens centre is made to form printable layer, stop the light that sends of light source when the bottom by described storage tank to nontransparent regional diffusion, avoid the liquid printed material in nontransparent region because being subject to the irradiation of the light of diffuse transmission and solidification occurs manifesting, be conducive to the dimensional accuracy improving model.
Further, the diameter of described lens arrangement 15 is 50 ~ 900 μm.
When the diameter of lens arrangement is 50 ~ 900 μm; the light through described lens arrangement not only can be made mostly to focus on the center of described lens; and then make the liquid printed material rapid solidification of position, described lens centre form printable layer; stop the light that sends of light source by during described protective clear layer to nontransparent regional diffusion, the diameter because of described lens arrangement can also be avoided simultaneously excessive and cause solidifying uneven problem.
Further, described lens arrangement is uniformly distributed in the row direction with on column direction.Described lens arrangement 15 spacing is in the row direction equal with spacing in a column direction, and the spacing namely in the row direction between two adjacent lens arrangements equals the spacing in a column direction between two adjacent lens arrangements; Wherein, the spacing between described two adjacent lens arrangements is the spacing of the central shaft of two lens.
Described lens arrangement in the row direction with column direction on be uniformly distributed time, be conducive to strengthening being uniformly distributed of light further, printable layer solidified more even, improve the Forming Quality of model further.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of 3D print system, and described 3D print system comprises above-mentioned 3D printer.
To sum up, embodiments provide a kind of 3D printer and 3D print system, wherein, described 3D printer comprises: print platform, the display floater be oppositely arranged with described print platform and be positioned at the light source of described display floater away from described print platform side; Wherein, described display floater is provided with protective clear layer towards the side of described print platform, and described protective clear layer comprises multiple lens arrangement towards the side of described print platform.Because described display floater is provided with protective clear layer towards the side of described print platform, described display floater can serve as the storage tank holding printed material, and therefore described 3D printer does not need to arrange storage tank again, simplifies the structure of 3D printer; And; because described protective clear layer comprises multiple lens arrangement towards the side of described print platform; after printed material is cured as printable layer; vacuum can not be formed between printable layer and protective clear layer; make printable layer can be easy to throw off from the end of storage tank; be conducive to improving the fineness of model surface, improve the molding effect of model, effectively solve the problem that the fineness of the model surface caused because of the rigid disengagement in bottom of printable layer and storage tank in prior art is not high.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a 3D printer, comprising: print platform, the display floater be oppositely arranged with described print platform and be positioned at the light source of described display floater away from described print platform side; It is characterized in that, described display floater is provided with protective clear layer towards the side of described print platform, and described protective clear layer comprises multiple lens arrangement towards the side of described print platform.
2. 3D printer as claimed in claim 1, it is characterized in that, the face of described lens arrangement projection is exiting surface, and described exiting surface is hemisphere face or half ellipsoidal surface.
3. 3D printer as claimed in claim 1, it is characterized in that, the diameter of described lens arrangement is 50 ~ 900 μm.
4. 3D printer as claimed in claim 1, it is characterized in that, described lens arrangement is uniformly distributed in the row direction with on column direction.
5. 3D printer as claimed in claim 1; it is characterized in that; described 3D printer also comprise be positioned at described protective clear layer periphery and the sealed plastic box be connected with described protective clear layer, described sealed plastic box and described protective clear layer form cavity, for holding printed material.
6. 3D printer as claimed in claim 1, is characterized in that, described protective clear layer adopts tempered glass materials.
7. a 3D printer, comprising: print platform, the display floater be oppositely arranged with described print platform and be positioned at the light source of described display floater away from described print platform side; It is characterized in that, described 3D printer also comprises and is positioned at the storage tank for hold printed material of described display floater towards the side of described print platform, described storage tank comprises transparent bottom, and described transparent bottom faces comprises multiple lens arrangement to the side of described print platform.
8. 3D printer as claimed in claim 7, it is characterized in that, the face of described lens arrangement projection is exiting surface, and described exiting surface is hemisphere face or half ellipsoidal surface.
9. 3D printer as claimed in claim 7, it is characterized in that, the diameter of described lens arrangement is 50 ~ 900 μm.
10. 3D printer as claimed in claim 7, it is characterized in that, described lens arrangement is uniformly distributed in the row direction with on column direction.
11. 3D printers as claimed in claim 7, is characterized in that, described transparent bottom adopts tempered glass materials.
12. 1 kinds of 3D print systems, is characterized in that, described 3D print system comprises the 3D printer described in the arbitrary claim of claim 1 ~ 11.
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| CN110524874A (en) * | 2019-08-23 | 2019-12-03 | 源秩科技（上海）有限公司 | Photocuring 3D printing device and its Method of printing |
| CN110524874B (en) * | 2019-08-23 | 2022-03-08 | 源秩科技（上海）有限公司 | Photocuring 3D printing device and printing method thereof |
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