WO2011111957A2 - Appareil de stéréolithographie pour la production rapide de formes couche sur couche - Google Patents

Appareil de stéréolithographie pour la production rapide de formes couche sur couche Download PDF

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Publication number
WO2011111957A2
WO2011111957A2 PCT/KR2011/001522 KR2011001522W WO2011111957A2 WO 2011111957 A2 WO2011111957 A2 WO 2011111957A2 KR 2011001522 W KR2011001522 W KR 2011001522W WO 2011111957 A2 WO2011111957 A2 WO 2011111957A2
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WO
WIPO (PCT)
Prior art keywords
resin
molding
photocurable
light
resin supply
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Application number
PCT/KR2011/001522
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English (en)
Korean (ko)
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WO2011111957A3 (fr
Inventor
이병극
Original Assignee
주식회사 캐리마
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Application filed by 주식회사 캐리마 filed Critical 주식회사 캐리마
Publication of WO2011111957A2 publication Critical patent/WO2011111957A2/fr
Publication of WO2011111957A3 publication Critical patent/WO2011111957A3/fr

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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
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Definitions

  • the present invention relates to a laminated type optical molding apparatus, and more particularly, a photocurable resin is applied to one surface of a molding sheet, and irradiated with light to cure the curable photocurable resin, which is sequentially laminated on the molding attaching member.
  • the present invention relates to a high-speed laminated optical molding apparatus capable of molding a molded object.
  • a general optical shaping device is a device for manufacturing prototypes of a desired shape by laminating plates divided into a plurality of layers in order to obtain a shaped object of a desired shape.
  • a general optical shaping device after changing the three-dimensional shape modeled by the CAD system into slice data divided into a plurality of layers having a constant thickness, using this to form a sheet-like sheet and stacked to produce a sculpture.
  • Rapid light molding machine is a method of laminating a sheet after forming a thin plate-like sheet by irradiating light to the photocurable resin, and largely divided into rapid liquid molding machine of free liquid type and regulated liquid type.
  • a base plate is installed in a resin tank in which a photocurable resin is stored, and resin is formed on the base plate by irradiating light on a resin located on an upper surface of the base plate. Thereafter, the base plate on which the resin cured resin is formed is submerged step by step, and then the resin cured resin layer is formed in the same manner and laminated.
  • the regulation liquid surface method light is irradiated from the bottom of the resin tank having the bottom surface formed of the transparent plate, and the base plate is placed in the resin tank to cure the resin in the resin tank. Subsequently, the resin cured resin is formed and laminated while transferring the base plate having the cured resin cured product upward.
  • the base plate is coupled in a cantilevered form to a conveying apparatus provided outside the resin tank.
  • the base plate coupled in the cantilevered form when manufacturing a large-scale sculpture, the base plate is sagging due to the increase in the size of the base plate can not maintain the horizontal, there was a problem that the lifting of the base plate is not precise.
  • the free liquid surface method and the regulated liquid surface method have a problem in that the molded product is cured in the resin tank in which the resin is stored so that the resin hardens and the resin takes a long time to cure.
  • a problem in the regulation liquid surface method is that it takes a long time to create a cross section because a strong light source cannot be used because light passes through the resin and forms a cross section inside the liquid stored in the resin tank.
  • the free liquid surface method, the regulated liquid surface method, and the slide method can form a molded object using a single photocurable resin, there is a problem that can not produce a molded article made of a plurality of photocurable resin material have.
  • the optical shaping device has a problem in that it is not possible to manufacture a molding made of a plurality of photocurable resin materials, for example, a conductive photocurable resin and a nonconductive photocurable resin.
  • An object of the present invention is to provide a high-speed laminated optical molding apparatus that can produce a sculpture made of a plurality of materials.
  • an object of the present invention is to provide a high-speed laminated optical molding apparatus that can quickly produce a sculpture and reduce the production cost of the sculpture by reducing the consumption of the photocurable resin.
  • an object of this invention is to provide the high speed laminated optical shaping
  • an object of the present invention is to provide a high-speed laminated optical molding apparatus capable of increasing the resolution of a sculpture or increasing the size of the sculpture.
  • an object of the present invention is to provide a high-speed laminated optical molding apparatus that can produce a sculpture having a variety of colors.
  • the high-speed laminated optical molding apparatus is installed on the main frame so as to be movable, the molding stage is attached to the molding formed by sequentially stacking photocurable resin, and disposed so as to be adjacent to or spaced apart from the molding stand according to the movement of the molding stand.
  • a molding sheet to which a photocurable resin is applied a resin supply unit including a plurality of resin supply means to apply a plurality of photocurable resins to the molding sheet, and a photocurable resin applied to the molding sheet in advance. It includes a light irradiation unit for irradiating light to cure in a set shape, and a mold transfer unit for transferring the molding stand adjacent or spaced apart from the molding sheet as the photocurable resin is sequentially stacked on the molding stand.
  • the resin supply unit may be movable along the guide member so as to apply a plurality of photocurable resins to the molding sheet and a base unit having a guide member for guiding a movement path of the resin supply means when the resin supply means is moved.
  • the resin supply means is installed, and the drive means for moving the resin supply means to apply a photocurable resin to the molding sheet.
  • the resin supply means is moved along the guide member to apply a first photocurable resin to the molding sheet, and when the first resin supply unit is located in the base position is moved to the molding sheet A second resin supply unit for applying the second photocurable resin may be provided.
  • the first and second resin supply units are installed in the first and second resin storage tanks in which the first and second photocurable resins are accommodated, and the first and second resin storage tanks, and the molding sheet is formed in the first and second resin storage tanks. It may be provided with a guide roll for guiding the molding sheet to flow into the storage tank is immersed in the first, second photocurable resin and then outflow.
  • the first and second resin supply units are installed in the first and second resin storage tanks, and when the first and second resin storage tanks are immersed in the first and second photocurable resins when the first and second resin storage tanks are moved from the base position, A first resin removing member for removing the first and second photocurable resins applied to one surface, and first and second photocurables applied to both surfaces of the molding sheet when the first and second resin storage tanks are moved to a base position A second resin removing member for removing the resin may be further provided.
  • the resin supply unit may be a photocurable resin that remains uncured by the light irradiated by the light irradiation unit among the molding attaching member provided on the molding table or the photocurable resin disposed around the molding formed by being laminated on the molding attaching member.
  • the resin recovery means for recovering may be further provided.
  • the resin recovery means may include first and second suction nozzles installed in the first and second resin supply units to suck the remaining first and second photocurable resins.
  • the first and second suction nozzles are installed to protrude from the first and second resin storage tanks provided in the resin supply means so that the first and second suction nozzles are disposed adjacent to the mold attaching member when the molding table descends. 1,2 When the resin storage tank returns to the base position after light irradiation of the light irradiation part, the first and second photocurable resins which remain uncured around the moldings formed by being stacked on the mold attaching member or the molding attaching member are sucked in. can do.
  • the resin recovery means has one end connected to the suction nozzle and the other end connected to the first and second resin storage tanks, and the first and second photocurable resins sucked by the suction nozzle are connected to the first and second resin storage tanks. It may further include a circulation pipe to provide a flow path of the first and second photocurable resin to be introduced.
  • the high-speed laminated optical molding apparatus may further include a coloring unit for coloring the molded object by spraying or applying ink onto each layer of the molded object which is cured by the light irradiation unit and laminated on the molding table.
  • the light irradiator includes a light source, an optical waveguide for uniformly converting the light emitted from the light source, a condenser lens for diffusing the light passing through the optical waveguide according to the size of an image chip, and converting the light into linear light.
  • a digital video signal is formed according to the transmitted video signal, and a digital video unit including the video chip, a transparent lens for transmitting light corresponding to a digital image output from the digital video unit, and light passing through the transparent lens.
  • An enlarged lens for magnifying and projecting the light may be provided.
  • the transmissive lens is moved left, right, up, down, up, down, left, and right by a size corresponding to half of a pixel of an image chip provided in the digital image part in order to soften the cross section of the sculpture formed by the digital image output from the digital image part.
  • the movement of the transparent lens may be controlled by the controller.
  • the controller may partially change the contrast or the color of the digital image signal formed on the image chip to maintain a constant amount of light passing through the digital image unit.
  • the high-speed stacked type optical molding apparatus further includes a reflector reflecting the light irradiated from the light irradiating part to the molding sheet, wherein the light irradiating part is provided with a number of times of dividing the light corresponding to the divided shape of the sculpture. It is controlled by the controller to irradiate, the reflector may be tilted by the controller so that light can be irradiated to the position of the molding sheet corresponding to the position of the divided shape of the sculpture.
  • the molding sheet is made of glass or acrylic, and the surface of the molding sheet may be coated with one or more of Teflon, nylon, transparent fiber, and polyester.
  • the first photocurable resin applied by the first resin supply unit is made of a non-conductive resin
  • the second photocurable resin applied by the second resin supply unit is made of a conductive resin and is attached to the mold.
  • the sculpture may be a circuit board.
  • the first photocurable resin applied by the first resin supply unit may be made of a soft resin
  • the second photocurable resin applied by the second resin supply unit may be made of a hard resin
  • the first photocurable resin applied by the first resin supply unit is made of a non-conductive resin
  • the second photocurable resin applied by the second resin supply unit is made of a conductive resin and is attached to the mold.
  • the sculpture may be a circuit board.
  • the first photocurable resin applied by the first resin supply unit may be made of a soft resin
  • the second photocurable resin applied by the second resin supply unit may be made of a hard resin
  • the photocurable resin coated on the molding sheet can be irradiated without directly irradiating light onto the first and second resin storage tanks through the molding sheet coated with the photocurable resin, the strong light source can be irradiated. There is an effect that the molding of the layer can be made quickly.
  • the resin in the first and second resin storage tanks may be cured.
  • the uncured resin can be recovered to the first and second resin storage tanks after being applied to the molding sheet through the resin recovery means, the amount of resin required for molding can be reduced, thereby reducing the manufacturing cost of the molded product. It has an effect.
  • the curing of the photocurable resin is uniformly realized over the entire area of the modeling plate, thereby obtaining an effect of molding a highly accurate model.
  • the present invention can be produced by dividing the sculpture through the video signal obtained by dividing the sculpture into a certain number, it is possible to increase the resolution (precision) of the sculpture or to increase the size of the sculpture.
  • the present invention can provide a color to each layer of the sculpture by providing a coloring portion, and can implement various colors in the same layer, so that the user can meet various needs.
  • FIG. 1 is a block diagram showing the internal configuration of a high-speed laminated optical shaping device according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view showing an internal configuration of a first resin supply unit of the high speed stacked optical shaping device shown in FIG.
  • FIG. 3 is an optical system configuration diagram illustrating an embodiment of a light irradiation part of the high speed stacked optical shaping device shown in FIG. 1.
  • FIG. 4 is an explanatory diagram showing an embodiment of measuring and correcting an amount of light of a light source of the high-speed stacked optical shaping device according to an embodiment of the present invention.
  • FIG. 5 is image data illustrating an example of a shape to be shaped by a high-speed stacked optical molding apparatus according to an embodiment of the present invention.
  • FIG. 6 is an explanatory diagram showing divided image data obtained by dividing the image data shown in FIG. 5 into four.
  • FIG. 7 to 17 are cross-sectional views sequentially showing the operation of the high-speed stacked optical shaping device shown in FIG.
  • FIG. 1 is a block diagram showing an internal configuration of a high-speed laminated optical molding apparatus according to an embodiment of the present invention
  • Figure 2 is an internal configuration of a first resin supply unit of the high-speed laminated optical molding apparatus shown in FIG. 3 is a cross-sectional view illustrating an optical system showing an embodiment of a light irradiation part of the high speed stacked optical shaping apparatus shown in FIG. 1, and
  • FIG. 4 is a high speed stacked optical light according to an embodiment of the present invention.
  • 5 is an explanatory diagram illustrating an example of measuring and correcting an amount of light of a light source of a molding apparatus.
  • FIG. 6 is an explanatory diagram showing divided image data obtained by dividing the image data shown in FIG. 5 into four.
  • the high-speed laminated optical molding apparatus 100 includes a main frame 110, a molding table 120, a molding table conveying unit 130, a molding sheet 140, a resin supplying unit 150, and a light irradiation unit ( 210, a control unit 230.
  • the main body frame 110 forms the outer shape of the high-speed laminated optical molding apparatus 100, and the molding table 120, the molding table conveying unit 130, the molding sheet 140, and the resin supply unit 150 are installed therein. It has an internal space so that
  • the body frame 110 may include a lower frame 111 and a side frame 112.
  • the side frame 112 may be provided with a mold guide member 113 for guiding the mold 120 when the mold 120 is moved.
  • Forming guide guide member 113 may be provided with at least two or more for the stable transport (lift) of the mold 120. As an example, as shown in FIG. 1, the mold guide member 113 may be installed at left and right sides of the side frame 112, respectively.
  • a plurality of molding guide guide members 113 may be provided, so that even when a large molding is formed, the molding stand 120 may be prevented from sagging or bending due to the load of the molding to correspond to a shape to be molded.
  • the molded object can be stably molded.
  • the molding stand 120 is provided to be movable to the main frame 110 and has a sculpture attaching member 122 to which the sculpture formed by sequentially stacking the photocurable resin is attached. That is, the mold 120 is connected to the mold transfer unit 130 and is installed on the mold guide member 113 provided in the side frame 112. Accordingly, the molding stand 120 may be elevated along the molding guide member 113 by the molding stand conveying unit 130.
  • the lower surface of the molding table 120 is provided with a sculpture attaching member 122 to which the sculpture is attached, and the sculpture formed by being stacked on the sculpture attaching member 122 or the sculpture attaching member 122 according to the lifting and lowering of the molding stand 120. A part is contacted or spaced apart from the photocurable resin applied to the molding sheet 140.
  • one side of the mold 120 may be provided with a driving force transmitting member 124 coupled to the mold transfer unit 130 receives the driving force from the mold transfer unit 130.
  • the mold transfer unit 130 transfers the mold 120 to be adjacent or spaced apart from the molding sheet 140 as the photocurable resin is sequentially stacked on the sculpture attachment member 122.
  • the mold transfer unit 130 may be configured to include a lead screw 134 is connected to the mold drive source 132 is rotated.
  • the lead screw 134 is coupled to the driving force transmission member 124 provided on one side of the molding table 120, the molding table 120 having a driving force transmission member 124 by the rotation of the lead screw 134. May be elevated along the lead screw 134.
  • the mold drive source 132 may be made of a stepping motor to easily control the lifting and lifting distance of the mold 120.
  • the mold drive source 132 is connected to the controller 230, the mold drive source 132 is controlled by the controller 230 can adjust the lifting distance of the mold 120.
  • the molding sheet 140 is disposed to be adjacent or spaced apart from the molding table 120 according to the movement of the molding table 120, and a photocurable resin is coated. That is, the molding sheet 140 is fixed to both ends of the resin supply unit 150 to be disposed below the molding table 120, the sculpture attachment member 122 provided on the molding table 120 in accordance with the lifting of the molding table 120 Alternatively, a portion of the sculpture formed by being stacked on the sculpture attachment member 122 may be in contact with or spaced apart from the molding sheet 140.
  • the molding sheet 140 is on the surface so that the photo-curable resin cured in the molding sheet 140 can be easily separated from the molding sheet 140 to be attached to the molding attachment member 122 or a part of the molding laminated first.
  • One or more of Teflon, nylon, transparent fiber, and polyester may be coated.
  • the molding sheet 140 may be made of a light transmissive material such that the light irradiated from the light irradiation unit 210 may pass through the molding sheet 140 such as glass or acrylic.
  • the resin supply unit 150 includes a plurality of resin supply means 154 to apply a photocurable resin of a plurality of materials to the molding sheet 140.
  • the resin supply unit 150 may include a base unit 152, a resin supply unit 154, and a driving unit 156.
  • the base unit 152 is provided with a guide member 152a for guiding the movement path of the resin supply means 154 when the resin supply means 154 moves.
  • the base unit 152 may be provided with a pair of base member 152b fixedly installed to face each other on both sides of the lower frame 111, and a guide member 152a installed on the base member 152b.
  • the resin supply means 154 may move between the base member 152b by the driving means 156 along the guide member 152a.
  • both ends of the molding sheet 140 may be fixed to the upper side of the base member 152b. That is, the molding sheet 140 is installed on the upper side of the base member 152b so that the photocurable resin can be applied to the molding sheet 140 by the resin supply means 154 moving between the base members 152b. Can be.
  • the base unit 152 may be further provided with a detection sensor 152c is installed on the base member 152b for detecting whether the resin supply means 154 is returned to the base position.
  • the detection sensor 152c is not limited to the case where the base member 152b is installed, and may be installed at any position capable of detecting the position of the resin supply means 154.
  • the sensor 152c may be a distance sensor installed on the bottom surface of the molding table 120.
  • the detection sensor 152c may be connected to the control unit 230, and a signal detected from the detection sensor 152c may be transmitted to the control unit 230.
  • the resin supply means 154 is installed to be movable along the guide member 152a to apply a photocurable resin of a plurality of materials to the molding sheet 140.
  • the resin supply means 154 is moved along the guide member 152a to apply the first photocurable resin to the molding sheet 140 and the first resin supply unit 160 and the first resin supply unit 160.
  • a second resin supply unit 170 is moved to apply a second photocurable resin to the molding sheet 140.
  • the base position of the first resin supply unit 160 refers to a position disposed adjacent to the base member 152b shown on the left side of FIG. 1, and the base position of the second resin supply unit 170 is located on the right side of FIG. 1. Refers to a position disposed adjacent to the illustrated base member 152b.
  • the first resin supply unit 160 is moved between the base position of the first resin supply unit 160 and the second resin supply unit 170, and the second resin supply unit 170 is the second resin supply unit. It is moved between the base position of the 170 and the first resin supply unit 160.
  • the first resin supply unit 160 is installed in the first resin storage tank 162 and the first resin storage tank 162 in which the first photocurable resin is accommodated. Is guided to the first resin storage tank 162 may be provided with a guide roll 164 to guide the molding sheet 140 to be immersed in the first photocurable resin and then outflow.
  • the first resin storage tank 162 includes first openings 162a and second openings 162b through which the molding sheet 140 flows in and out. That is, the molding sheet 140 may be drawn into or drawn out of the first resin storage tank 162 through the first and second openings 162a and 162b.
  • the first resin storage tank 162 may include a mounting portion 162c on which the guide roll 164 is mounted. That is, the guide roll 164 is rotatably mounted to the lower end of the mounting portion 162c and serves to guide the molding sheet 140 which flows in and out through the first and second openings 162a and 162b.
  • the molding sheet 140 flows into the first resin storage tank 162 and is accommodated in the first resin storage tank 162. After being immersed in the first photocurable resin to be discharged from the first resin storage tank 162.
  • the first resin supply unit 160 is installed in the first resin storage tank 162, when the first resin storage tank 162 moves from the base position to the second resin storage tank 172 side to the first curable resin
  • the first resin removing member 165 and the first resin storage tank 162 to remove the first curable resin applied to one surface of the molding sheet 140 that is discharged after being immersed are disposed on the second resin storage tank 172.
  • When moving from the base to the base position may further include a second resin removal member 166 for removing the first photocurable resin applied to both sides of the molding sheet 140.
  • the first resin removing member 165 is installed in the first resin storage tank 162 to be disposed adjacent to the first opening 162a.
  • the first resin removing member 165 removes the first photocurable resin applied to the bottom surface of the molding sheet 140 flowing into and out of the first resin storage tank 162.
  • the second resin removing member 166 is first resin to remove the first photocurable resin applied to both sides of the molding sheet 140 that is immersed in the first photocurable resin and flows out to the second opening 162b. It is installed in the inner space of the storage tank 162.
  • the first photocurable resin may not remain in the molding sheet 140.
  • the second resin supply unit 170 has the same components as the first resin supply unit 160 described above, each component is located in the opposite direction compared to the first resin supply unit 160 only Only that is different from the first resin supply unit (160). Therefore, detailed description of the second resin supply unit 170 will be omitted.
  • first and second photocurable resins applied to the molding sheet 140 by the first resin supply unit 160 and the second resin supply unit 170 may be, for example, conductive resins and nonconductive resins. .
  • the sculpture manufactured by the high-speed stacked optical molding apparatus 100 may be, for example, a circuit board (PCB).
  • PCB circuit board
  • a portion formed by curing of the first photocurable resin, which is a conductive resin is used as a main medium, and thus each pattern is formed.
  • the insulating function is performed between, and the portion formed by the curing of the second photocurable resin, which is a conductive resin, forms a pattern of the substrate.
  • first and second curable resins applied to the molding sheet 140 by the first resin supply unit 160 and the second resin supply unit 170 may be hard resins and soft resins.
  • the sculpture manufactured by the high speed laminated optical shaping device 100 may be, for example, a remote control housing.
  • the part formed by the first photocurable resin, which is the hard resin is the housing body, and the second photocurable resin which is the soft resin.
  • the portion formed by may be a button provided in the remote control housing.
  • toothbrush rod and bristles of the toothbrush made of hard resin and soft resin may also be manufactured by the first and second photocurable resins made of hard resin and soft resin.
  • the first and second photocurable resins are not limited to the case of the conductive resin, the nonconductive resin, the hard resin, and the soft resin, and may be made of two materials exhibiting different characteristics.
  • the resin supply unit 154 is irradiated to the light irradiated by the light irradiation unit 210 among the first and second photo-curable resin disposed around the sculpture formed by being stacked on the sculpture attaching member 122 or the sculpture attaching member 122. It may be further provided with a resin recovery means 180 for recovering the first and second photo-curable resin remaining without being cured.
  • the resin recovery means 180 may include first and second suction nozzles 182b and 184b installed in the first and second resin supply units 160 and 170 to suck the remaining first and second photocurable resins. .
  • the resin recovery means 180 may include first and second resin recovery means 182 and 184 installed in the first and second resin supply units 160 and 170.
  • the first resin recovery means 182 is connected to the first suction pump 182a and the first suction pump 182a to provide suction power so as to suck the first photocurable resin, and the sculpture attaching member 122 or A first suction nozzle 182b for recovering the uncured remaining first photocurable resin disposed around the sculpture formed by being stacked on the sculpture attachment member 122, and one end thereof is connected to the first suction nozzle 182b The other end is connected to the first resin storage tank 162 to provide a flow path of the first photocurable resin so that the first photocurable resin sucked from the first suction nozzle 182b flows into the first resin storage tank 162. It may be provided with a first circulation pipe (182c).
  • the first suction nozzle 182b is installed so that the end protrudes from the first resin storage tank 162 so that the first suction nozzle 182b is disposed adjacent to the mold attaching member 122 when the molding stand 120, the first resin storage tank 162 ) Sucks the uncured first photocurable resin remaining around the sculpture formed by being stacked on the sculpture attachment member 122 or the sculpture attachment member 122 upon return to the base position after irradiation of the light irradiation part 210. .
  • first photocurable resin sucked by the first suction nozzle 182b may flow back into the first resin storage tank 162 through the first circulation pipe 182c.
  • the second resin recovery means 184 has the same configuration as the first resin recovery means 182, and compared with the first resin recovery means 182, each component is located in the opposite direction to each other Only that is different from the first resin recovery means (182). Therefore, detailed description of the second resin recovery means 184 will be omitted.
  • the driving means 156 moves the resin supply means 154 so that the photocurable resin is applied to the molding sheet 140. Meanwhile, the driving means 156 may include a first driving unit 190 for driving the first resin supply unit 160 and a second driving unit 200 for driving the second resin supply unit 170. .
  • the first and second drive units 190 and 200 may include first and second drive motors (not shown) for generating a driving force, first and second drive pulleys 192 and 202 connected to the drive motor, and first and second drive pulleys 192 and 202.
  • the first and second driven pulleys 194 and 204 connected to and rotated, the first and second driven pulleys 192 and 202 and the first and second driven pulleys 194 and 204 respectively wound around the first and second driven pulleys 196,206.
  • the first driving member 196 is connected to the first resin storage tank 162 of the first resin supply unit 160.
  • the first resin storage tank 162 may include a fastener 162d. Can be.
  • the first driving member 196 is fixedly installed at the fastener 162d. Accordingly, when the first driving member 196 is driven, the first resin storage tank 162 is together with the first driving member 196. I can move it.
  • the second driving member 206 is connected to the second resin storage tank 172 of the second resin supply unit 170, for this purpose, the second resin storage tank 172 may also be provided with a fastener 172d. Can be. That is, the second drive member 206 is connected to the fastener 172d so that the second resin storage tank 172 can move together with the second drive member 206.
  • the first and second driving means 156 includes a driving pulley 192 and 202, driven pulleys 194 and 204, and a belt including first and second driving members 196 and 206.
  • the present invention is not limited thereto, and any configuration capable of moving the first and second resin storage tanks 162 and 172 may be employed.
  • the light irradiation unit 210 irradiates light to cure the photocurable resin applied to the molding sheet 140 to a predetermined shape.
  • the light irradiation unit 210 will be described in more detail with reference to FIG. 3.
  • the light irradiation unit 210 is, for example, a light source 211, a heat shield filter 212 for blocking heat contained in the light irradiated from the light source 211, and the light passing through the heat shield filter 212.
  • the optical waveguide 213 for uniformly converting the light
  • the ultraviolet amplification filter 214 for amplifying the ultraviolet rays of the light passing through the optical waveguide 213, and the light passing through the ultraviolet amplification filter 214.
  • Condenser lens 215 for diffusing and converting into linear light according to the size of?
  • a digital image signal is formed according to the image signal transmitted from the controller 230, and the digital image unit 216 having the image chip 216a.
  • the configuration of the light irradiation unit 210 may be omitted or added to some of the components in order to improve or simplify the function.
  • a fine driver such as a piezo actuator may be used to finely move the transparent lens 218, and the fine movement of the transparent lens 218 may be controlled by the controller 230.
  • the light source 211 can transmit light having a wavelength capable of curing the photocurable resin, LEDs (Light-emitting diodes), LDs (Laser diodes), xenon lamps, halogen lamps, ultraviolet lamps, infrared lamps, etc. Is not particularly limited. That is, the kind of the light source 211 may be determined according to the kind of the photocurable resin.
  • the image chip 216a included in the digital imaging unit 216 may be one of a digital micromirror device (DMD), a liquid crystal on silicon (LCOS), and a liquid crystal display (LCD).
  • DMD digital micromirror device
  • LCOS liquid crystal on silicon
  • LCD liquid crystal display
  • the reflector 217 may include one of a TIR prism, an RTIR prism, and a reflective mirror, and may be configured to reflect light from the condenser lens 215 on the image chip 216a.
  • the light irradiator 210 irradiates light to be reflected directly from the condenser lens 215 to the image chip 216a without the configuration of the reflector 217 to thereby output the digital image signal from the digital image unit 216. You can make an image.
  • magnification lens 219 may use a general lens, but it is also possible to use a telecentric lens for more detailed molding.
  • the high-speed laminated optical molding apparatus 100 is a method of forming by forming a layer by layer, it may be a problem that the stacked surface appears in a step shape.
  • the image chip 216a itself creates an image image through ON and OFF in the form of pixels, the cross-sectional shape itself also appears in a stepped form. This problem occurs even when the sculpture is small, but when producing a large sculpture is a big problem.
  • the high-speed laminated optical molding apparatus 100 finely transports the transparent lens 218 by using a micro-driving device such as a piezo actuator. Image correction can be adopted.
  • the transmissive lens 218 combined with a micro driver such as a piezo actuator is moved up, down, left, right, up, down, left and right by about the size of half of the pixels provided in the image chip 216a. You can move it so that it looks as if there are more virtual pixels between the pixels.
  • the transmissive lens 218 is moved up, down, left, right, up, down, left, or right by about half the size of the pixel provided in the image chip 216a, thereby shifting the position of light corresponding to the digital image signal from the image chip 216a. It becomes possible to move by 218 to correct the cross-sectional data entering the image chip 216a. Therefore, a finer and smoother cross-sectional image can be obtained without using afterimage phenomenon.
  • the controller may be configured to partially change the color, and the control of the image chip 216a may be performed by the controller 230.
  • the light amount 10a of the light irradiated from the light irradiator 210 is partially changed according to the characteristics of the image chip 216a.
  • the amount of light at both edge portions is smaller than that of the center portion.
  • the curing of the photocurable resin may not be sufficiently performed at the portion of the molding sheet 140 corresponding to the portion having the low light amount. Therefore, it is necessary to make the quantity of light constant throughout the image chip 216a.
  • the actual amount of light 10c to be irradiated is the image chip 216a. It becomes uniform throughout.
  • the light quantity 10a of the light irradiated from the light irradiation unit 210 is scanned with a photometer, and the scanned measurement data is inputted into the cross-sectional data 10b of the shape to be shaped, thereby producing a sculpture.
  • the amount of light 10c irradiated with time it is possible to irradiate light with a uniform amount of light to obtain a sculpture with higher precision.
  • the controller 230 controls the light irradiator 210 to irradiate the light corresponding to the divided shape of the sculpture by the number of dividing pieces of the sculpture a plurality of times, and the light irradiated from the light irradiator 210 to the molding sheet 140.
  • the reflector 240 may be controlled to be tilted so that light may be irradiated to the position of the molding sheet 140 corresponding to the position of the divided shape of the sculpture.
  • the image data PD of the shape having the shape illustrated in FIG. 5 may be divided into four divided image data PD1, PD2, PD3, and PD4 for shaping.
  • an image signal corresponding to the first portion 20a is provided to the image chip 216a of FIG. 3, and the tilting position of the reflector 240 is controlled to provide light.
  • the light irradiated from the irradiator 210 may be reflected through the reflector 240 to cure the portion of the molding sheet 140 corresponding to the first portion 20a.
  • the image data corresponding to a quarter is represented in the entire image chip 216a, so that the same pixel of the image chip 216a is provided.
  • the effect is to enlarge the number four times.
  • FIG. 6 illustrates a case in which the battery is divided into four shapes when viewed from the front, but the direction of division may be variously changed based on the stacking direction.
  • the molding can have a higher precision (resolution) (four times the precision).
  • the high-speed laminated optical shaping device 100 is formed by stacking a photocurable resin on the mold 120 after curing by the light irradiation unit 210. It may further include a coloring unit 250 for coloring the sculpture by spraying or applying ink to each layer of the sculpture.
  • the photocurable resin is cured to form colors in the moldings stacked on the molding table 120.
  • the coloring unit 250 may be formed of an inkjet ejection apparatus holding a plurality of color inks.
  • the coloring unit 250 may include a storage unit 252 for storing ink of various colors and an injection nozzle 254 for injecting ink contained in the storage unit 252. have.
  • the coloring unit 250 is to apply the ink on top of each layer of the sculpture each time the lamination of a layer of the sculpture is completed.
  • the installation position is not limited as long as the ink can be applied to the upper part of the sculpture in which the layers are laminated. .
  • the colored portion 250 may be configured to transfer the upper surface of the sculpture to the left and right or the front and rear directions so that ink can be sprayed to each layer position of the sculpture.
  • the coloring part 250 it becomes possible to give a various color to a sculpture. That is, it may be possible to spray or apply ink with different colors to each layer, or it may be possible to obtain various colored sculptures by spraying or applying ink of various colors to one layer.
  • FIG. 7 to 17 are cross-sectional views sequentially showing the operation of the high-speed stacked optical shaping device shown in FIG.
  • the molding stand 120 in the ready state of operation, is positioned such that the molding attaching member 122 is spaced apart from the molding sheet 140, and the first resin supply unit 160 and the second resin are disposed.
  • the supply unit 170 is disposed at the base position.
  • the first resin supply unit 160 moves from the base position to the second resin supply unit 170.
  • the first driving member 196 wound around the driving pulley 192 and the driven pulley 194 is driven by the first driving motor (not shown), and accordingly, the first resin installed on the first driving member 196 is driven.
  • the storage tank 162 is moved.
  • the molding sheet 140 is immersed in the first photocurable resin accommodated in the first resin storage tank 162 and then flows out of the first resin storage tank 162. do.
  • the first photocurable resin is coated on the upper surface of the molding sheet 140.
  • the molding sheet 140 is the second opening 162b of the first resin storage tank 162.
  • the lead is introduced into the guide roll 164 and flows out into the first opening 162a.
  • the first photocurable resin applied to the bottom surface of the molding sheet 140 is removed by the first resin removing member 165. Accordingly, the first photocurable resin may be applied only to the upper surface of the molding sheet 140 to flow out of the first resin storage tank 162.
  • the first molding member 140 of the molding table 120 is applied to the molding sheet 140.
  • the molding table 120 descends so as to contact the photocurable resin.
  • the mold 120 may be lowered by the driving of the mold drive source 132. That is, the lead screw 134 is rotated according to the driving of the mold drive source 132, and thus, the mold 120 connected to the lead screw 134 through the driving force transmitting member 124 descends.
  • the first attachable resin in a liquid state may be attached to the sculpture attaching member 122.
  • the mold 120 rises a predetermined distance. That is, when the first resin storage tank 162 is moved to the base position, the mold holder 120 is moved to the upper side to prevent interference between the cured sculpture attached to the sculpture attachment member 122 and the resin recovery means 180. .
  • the control unit 230 determines whether the first resin storage tank 162 returns to the base position according to the signal detected by the sensor 152c.
  • the first resin storage tank 162 when the first resin storage tank 162 is moved to the base position, the first curable resin remaining in the molding sheet 140 and the molding attaching member 122 is the second resin removing member 166 (see FIG. 2). And it is removed through the resin recovery means 180.
  • the molding sheet 140 is formed in the first resin storage tank. After entering the first opening 162a of 162, the second opening 162b flows out of the second opening 162b.
  • the first photocurable resin applied to the molding sheet 140 flowing out to the second opening 162b is removed through the second resin removing member 166.
  • the first photocurable resin in a liquid state may be attached to the sculpture attaching member 122 contacting the first photocurable resin, and the liquid state adhered to the sculpture attaching member 122 in this manner.
  • the first curable resin of is removed by the resin recovery means 180.
  • the first suction pump 182a of the first resin recovery means 182 is driven. Accordingly, the first photocurable resin in the liquid state attached to the sculpture attaching member 122 is sucked through the first suction nozzle 182b. Thereafter, the first photocurable resin is introduced into the first resin storage tank 162 again through the first circulation pipe 182c.
  • the second resin storage tank 172 is moved from the base position to the first resin storage tank 162.
  • the second photocurable resin is coated on the upper surface of the molding sheet 140.
  • the mechanism by which the second photocurable resin is applied is the same as when the first photocurable resin is applied, and thus the detailed description thereof will be omitted.
  • the molding table 120 When the second photocurable resin is applied to the upper surface of the molding sheet 140, as shown in FIG. 14, the molding table 120 is lowered. Accordingly, the second photocurable resin applied to the molding sheet 140 contacts the molding attaching member 122.
  • the second photocurable resin in a liquid state may be attached to the sculpture attaching member 122 and / or the cured first photocurable resin.
  • the mold 120 rises a predetermined distance. That is, when the second resin storage tank 172 is moved to the base position, the mold holder 120 is moved to the upper side to prevent interference between the sculpture attaching member 122 and / or the cured sculpture and the resin recovery means 180. .
  • the second resin storage tank 172 Upon completion of the movement to the upper side of the mold 120, the second resin storage tank 172 is moved to the base position as shown in FIG. Meanwhile, when the second resin storage tank 172 is moved to the base position, the molding sheet 140, the molding attaching member 122, and the liquid second liquid photocurable resin remaining in the cured molding are the second resin removing member. (Not shown) and the resin recovery means 180 is removed.
  • the mechanism for removing the second photocurable resin is also the same as the case where the first photocurable resin is removed, and thus the detailed description thereof will be omitted.
  • the layers sequentially stacked by curing may be made of only the first photocurable resin, or may be made of only the second photocurable resin, and as described above, the first and second photocurable resins may be laminated to form one layer. It could be.
  • the molded part may be a circuit board (PCB), and some layers may be formed by curing the first photocurable resin.
  • the layer of may be formed by curing the second photocurable resin, and the remaining layers may be laminated so that the first and second curable resins form one layer.
  • the first photocurable resin made of a non-conductive resin may form a main medium of the circuit board, and the second photocurable resin made of a conductive resin may form a pattern of the substrate.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)

Abstract

L'invention porte sur un appareil de stéréolithographie pour la production rapide de formes couche sur couche à partir d'une pluralité de matériaux. L'appareil de stéréolithographie pour la production rapide d'objets couche sur couche comprend : une base de modélisation qui est agencée de façon à être mobile dans un cadre de corps principal, et sur laquelle une forme produite par empilement séquentiel de résines photodurcissables est attachée ; une feuille de modélisation qui est agencée pour se rapprocher ou s'éloigner de la base de modélisation conformément au mouvement de la base de modélisation, et sur laquelle des résines photodurcissables sont déposées ; une unité d'alimentation en résine comprenant une pluralité de moyens d'alimentation en résine pour déposer une pluralité de types de résines photodurcissables sur la feuille de modélisation ; une unité d'émission de lumière qui émet de la lumière pour durcir les résines photodurcissables déposées sur la feuille de modélisation en une forme prédéterminée ; et une unité de déplacement de base de modélisation qui déplace la base de modélisation de telle manière que la base de modélisation se rapproche ou s'éloigne de la feuille de modélisation à mesure que les résines photodurcissables sont séquentiellement empilées sur la base de modélisation. Selon l'appareil de stéréolithographie décrit plus haut pour la production rapide de formes couche sur couche, une forme peut être produite à partir de divers types de matériaux fournis par des première et seconde unités d'alimentation en résine.
PCT/KR2011/001522 2010-03-10 2011-03-04 Appareil de stéréolithographie pour la production rapide de formes couche sur couche WO2011111957A2 (fr)

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US9360757B2 (en) 2013-08-14 2016-06-07 Carbon3D, Inc. Continuous liquid interphase printing
US9453142B2 (en) 2014-06-23 2016-09-27 Carbon3D, Inc. Polyurethane resins having multiple mechanisms of hardening for use in producing three-dimensional objects
US9498920B2 (en) 2013-02-12 2016-11-22 Carbon3D, Inc. Method and apparatus for three-dimensional fabrication
EP3453520A1 (fr) * 2017-09-07 2019-03-13 XYZprinting, Inc. Imprimante 3d de stéréolithographie
US10316213B1 (en) 2017-05-01 2019-06-11 Formlabs, Inc. Dual-cure resins and related methods
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US9360757B2 (en) 2013-08-14 2016-06-07 Carbon3D, Inc. Continuous liquid interphase printing
US11786711B2 (en) 2013-08-14 2023-10-17 Carbon, Inc. Continuous liquid interphase printing
US11141910B2 (en) 2013-08-14 2021-10-12 Carbon, Inc. Continuous liquid interphase printing
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ES2461942A1 (es) * 2014-02-19 2014-05-21 Stalactite 3D, S.L. Impresora tridimensional
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US11772324B2 (en) 2014-06-20 2023-10-03 Carbon, Inc. Three-dimensional printing with reciprocal feeding of polymerizable liquid
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US10240066B2 (en) 2014-06-23 2019-03-26 Carbon, Inc. Methods of producing polyurea three-dimensional objects from materials having multiple mechanisms of hardening
US11707893B2 (en) 2014-06-23 2023-07-25 Carbon, Inc. Methods for producing three-dimensional objects with apparatus having feed channels
US11440266B2 (en) 2014-06-23 2022-09-13 Carbon, Inc. Methods of producing epoxy three-dimensional objects from materials having multiple mechanisms of hardening
US9453142B2 (en) 2014-06-23 2016-09-27 Carbon3D, Inc. Polyurethane resins having multiple mechanisms of hardening for use in producing three-dimensional objects
US10647879B2 (en) 2014-06-23 2020-05-12 Carbon, Inc. Methods for producing a dental mold, dental implant or dental aligner from materials having multiple mechanisms of hardening
US10647880B2 (en) 2014-06-23 2020-05-12 Carbon, Inc. Methods of producing polyurethane three-dimensional objects from materials having multiple mechanisms of hardening
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US11358342B2 (en) 2014-06-23 2022-06-14 Carbon, Inc. Methods of producing three-dimensional objects from materials having multiple mechanisms of hardening
US10899868B2 (en) 2014-06-23 2021-01-26 Carbon, Inc. Methods for producing footwear with materials having multiple mechanisms of hardening
US9982164B2 (en) 2014-06-23 2018-05-29 Carbon, Inc. Polyurea resins having multiple mechanisms of hardening for use in producing three-dimensional objects
US9676963B2 (en) 2014-06-23 2017-06-13 Carbon, Inc. Methods of producing three-dimensional objects from materials having multiple mechanisms of hardening
US9598606B2 (en) 2014-06-23 2017-03-21 Carbon, Inc. Methods of producing polyurethane three-dimensional objects from materials having multiple mechanisms of hardening
US11299579B2 (en) 2014-06-23 2022-04-12 Carbon, Inc. Water cure methods for producing three-dimensional objects from materials having multiple mechanisms of hardening
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US10793745B2 (en) 2017-05-01 2020-10-06 Formlabs, Inc. Dual-cure resins and related methods
US10316213B1 (en) 2017-05-01 2019-06-11 Formlabs, Inc. Dual-cure resins and related methods
JP2019048419A (ja) * 2017-09-07 2019-03-28 三緯國際立體列印科技股▲ふん▼有限公司ＸＹＺｐｒｉｎｔｉｎｇ， Ｉｎｃ． 光硬化型立体印刷装置
US10639852B2 (en) 2017-09-07 2020-05-05 Xyzprinting, Inc. Stereolithography 3D printer
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