WO2001005575A1 - Procede et dispositif de production pour matiere formee polymerisable - Google Patents

Procede et dispositif de production pour matiere formee polymerisable Download PDF

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Publication number
WO2001005575A1
WO2001005575A1 PCT/JP2000/004727 JP0004727W WO0105575A1 WO 2001005575 A1 WO2001005575 A1 WO 2001005575A1 JP 0004727 W JP0004727 W JP 0004727W WO 0105575 A1 WO0105575 A1 WO 0105575A1
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WO
WIPO (PCT)
Prior art keywords
light
resin
layer
image
thin layer
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Application number
PCT/JP2000/004727
Other languages
English (en)
Japanese (ja)
Inventor
Kiyotaka Hara
Yukinori Hirata
Original Assignee
Edward Jefferson Horne
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Edward Jefferson Horne filed Critical Edward Jefferson Horne
Publication of WO2001005575A1 publication Critical patent/WO2001005575A1/fr

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Classifications

    • 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

Definitions

  • the present invention provides a method for irradiating a thin layer made of a melt or a solution of a photo-curable resin corresponding to the thickness of a photo-cured product to be formed with image light, thereby hardening the resin of the thin layer.
  • the present invention relates to a method and an apparatus for producing a photo-cured object having a shape corresponding to a two-dimensional planar image of a light-cured object or a three-dimensional light-cured object formed by laminating a plurality of resin cured layers.
  • a photo-curing molding method irradiates the surface of a thin layer of a liquid photo-curable resin with light to cure it, thereby forming a molded article composed of a thin resin cured layer in which only the irradiated area is cured. It is.
  • many light sources use laser light. However, when laser light is used, it is necessary to expose portions to be cured one by one, so that the exposure time is long. Therefore, for example, as disclosed in Japanese Patent Application Laid-Open No.
  • a liquid crystal mask is used to form an exposure pattern corresponding to the shape of a model to be manufactured on the liquid crystal mask.
  • a method has been proposed for manufacturing a molded object in a short time by performing a collective exposure in which light emitted from an ultra-high pressure mercury lamp through this exposure pattern is applied to the surface of a thin layer of a photocurable resin. ing.
  • the present invention has been made to solve such a problem, and a method and apparatus for manufacturing a photo-cured molded article capable of producing a highly accurate molded article with a short molding time, a simple configuration, and a simple structure.
  • the purpose is to provide Disclosure of the invention
  • a method for producing a photocured molded article according to the present invention comprises the steps of: Irradiating and curing the resin of the thin layer to produce a three-dimensionally shaped photo-cured product in which a plurality of resin cured layers having a shape corresponding to the two-dimensional planar image of the image light are laminated.
  • the control data for forming a two-dimensional plane image is input to the fine mirror element in which the fine mirrors are arranged on a flat plate, and the reflection angle of each fine mirror with respect to the incident light from the light source is controlled.
  • Reflected light corresponding to
  • a resin cured layer having a shape corresponding to a two-dimensional planar image of the image light is laminated. It is characterized by producing a three-dimensionally shaped photocured object.
  • the manufacturing apparatus of the present invention irradiates image light to a thin layer made of a melt or a solution of a photocurable resin corresponding to the layer thickness of a photocured product to be formed, and cures the resin of the thin layer.
  • a micromirror element in which micromirrors are arranged on a flat plate, a light source for inputting light to the micromirror element, and control data for forming a two-dimensional plane image in the micromirror element are inputted. Controlling the reflection angle of the fine mirror with respect to the incident light from the light source, emitting reflected light corresponding to the two-dimensional planar image, irradiating the reflected light as the image light to the thin layer, And a controller for repeatedly controlling the step of curing the number of times equal to the number of resin cured layers constituting the three-dimensional shape.
  • a thin layer made of a melt or a solution of a photocurable resin corresponding to the thickness of the photocured product to be formed is irradiated with image light to cure the resin of the thin layer.
  • a sheet having the photocurable resin and the adhesive property is formed on the lower surface side of the double-sided bonding member. Joining the shaped members.
  • the double-sided bonding member is heated, and the sheet bonding member including the sheet member is heated.
  • the method further comprises a step of peeling off the laminated photocured shaped object.
  • the lower surface side of the lowermost resin cured layer has an adhesive property with the photocurable resin.
  • a transparent sheet-like member not interposed, a light-transmissive plate member is inserted into the lower surface of the transparent sheet-like member, and a melt of the photocurable resin is placed on the lower surface of the lowermost resin cured layer.
  • the method includes a step of bringing the solution into close contact.
  • the third step and the fourth step are performed with the light-transmitting plate member being inserted, and the transparent sheet-shaped member is changed before the fifth step is performed.
  • Pull the light transmissive plate A step of peeling the transparent sheet-like member from the lower surface of the lowermost resin-hardened layer while moving it in the punching direction is provided.
  • the third step and the fourth step are performed with the light transmitting plate member being inserted, and the light transmitting plate member is pulled out before the fifth step is performed.
  • the transparent sheet-shaped member is moved while moving a peeling member that presses the transparent sheet-shaped member in a direction of a space formed between the plate member and the lower surface of the lowermost resin cured layer.
  • the method includes a step of peeling the member from the lower surface of the lowermost resin cured layer.
  • the third and fourth steps are performed with the light-transmitting plate member inserted, and the transparent sheet-shaped member and the light-transmitting member are set before performing the fifth step.
  • the method further comprises a step of sucking the transparent sheet-shaped member from a suction hole provided in a part of the light-transmitting plate member to bring the transparent sheet member into close contact therewith.
  • the manufacturing apparatus of the present invention irradiates image light to a thin layer made of a melt or a solution of a photocurable resin corresponding to the layer thickness of a photocured product to be formed, and cures the resin of the thin layer.
  • Means a fourth means for raising the stage after a curing time of the thin layer irradiated with the image light has passed, and an operation of the second means to the fourth means, wherein the operation of the second means to the fourth means is performed by a resin cured layer forming a three-dimensional shape.
  • Fifth means for repeatedly executing the same number of times as the number of layers.
  • a recording medium on which a control program for realizing the manufacturing method of the present invention is recorded includes a processing step for positioning a stage holding a photocured product at an initial position, and a light corresponding to the thin layer on the lower surface side of the positioned stage.
  • the processing step of raising the stage and the second to fifth steps are performed the number of times equal to the number of resin cured layers constituting the three-dimensional shape. It is characterized in that a control program including a processing step to be repeatedly executed is recorded.
  • FIG. 1 is a configuration diagram showing a first embodiment of a photocured object manufacturing apparatus to which the present invention is applied.
  • FIG. 2 is an explanatory diagram of molding data.
  • Fig. 3 is an explanatory diagram showing the relationship between the modeling data, the DMU, and the image plane. is there.
  • FIG. 4 is a flowchart showing a control procedure in the configuration of FIG.
  • FIG. 5 is an explanatory view showing a process for producing a cured resin.
  • FIG. 6 is an explanatory view showing a continuation of FIG.
  • FIG. 7 is a configuration diagram showing a second embodiment of a photocured molded article manufacturing apparatus to which the present invention is applied.
  • FIG. 8 is a flowchart showing a control procedure in the configuration of FIG.
  • FIG. 9 is an explanatory diagram showing a production process of the cured resin in the configuration of FIG.
  • FIG. 10 is an explanatory diagram showing a continuation of FIG. 9;
  • FIG. 11 is a main part configuration diagram showing a third embodiment of a photocured object manufacturing apparatus to which the present invention is applied.
  • FIG. 12 is a main part configuration diagram showing a fourth embodiment of the photocured object manufacturing apparatus to which the present invention is applied.
  • FIG. 13 is a diagram showing an example of a case where the photocured object is separated from the holding stage.
  • FIG. 14 is a diagram showing an embodiment of the present invention in which the photocured object is separated from the holding stage.
  • FIG. 15 is a view showing a step that follows the step of FIG.
  • FIG. 16 is a view showing an embodiment of a method for adhering a photocurable resin in a resin cured layer next to the latest resin cured layer in the present invention.
  • FIG. 17 is a diagram showing a first example of a method of peeling a transparent sheet-like member in order to fill a photocurable resin in a resin cured layer next to a latest resin cured layer in the present invention. is there.
  • FIG. 18 is a diagram showing a second example of a method of peeling a transparent sheet-like member in order to fill a photocurable resin of a resin cured layer next to a latest resin cured layer in the present invention. It is.
  • FIG. 19 is a diagram showing a third example of a method of peeling a transparent sheet-like member in order to fill a photocurable resin in a resin cured layer next to a latest resin cured layer in the present invention.
  • FIG. 20 is a view showing a method of bringing the transparent sheet-like member shown in FIGS. 17 to 19 into close contact with a light-transmitting plate member in the present invention.
  • FIG. 1 is a configuration diagram showing one embodiment of a photocured product manufacturing apparatus according to the present invention.
  • this photocured product manufacturing equipment is a liquid that contains a light source 1, a color filter 2, a condenser lens 3, a shirt 4, a micromirror element unit 5, an imaging lens 6, and a photocurable resin liquid 7.
  • Vessel 8 Z-axis operation stage 9 for holding the photo-cured object, drive mechanism 10 for moving this Z-axis operation stage 9 in the Z-axis direction (vertical direction), and photo-curing resin liquid
  • injection valve 12 for injecting required amount of sap 7 into sap 8 and injection pipe 13
  • personal computer 14 as control device to control modeling operation
  • modeling Modeling data storage device 15 that stores data, keyboard 16 for inputting modeling conditions, etc.
  • Keyboard and pointing device (mouse) 17 display device 18 that is a man-machine interface with Opera, injection It has a valve driver 19, a Z-axis operation stage driver 20, and a DMU driver 21 for inputting control data to the micromirror unit 5.
  • the drive mechanism 10 is composed of a rod 23 having a spiral groove formed on the rotation shaft of the motor 22 and an arm member 24 having one end rotatably engaged with the rod 23.
  • a Z-axis operation stage 9 is supported on the other end of the arm member 24, and the Z-axis operation stage 9 is configured to move up and down by clockwise and counterclockwise rotation of the motor 22.
  • a light source that emits visible light or ultraviolet light is used as the light source 1.
  • visible light for example, a metal highlight lamp or a halogen lamp is used.
  • ultraviolet light an ultra-high pressure mercury lamp or an ultraviolet fluorescent lamp is used.
  • visible light a resin that is cured by irradiation with visible light, for example, a visible light curable resin; a resin liquid such as VL-003 (trade name) is used.
  • ultraviolet light the resin is irradiated with ultraviolet light.
  • a curable resin for example, an ultraviolet curable resin; a resin liquid such as RP-5001A (trade name) is used.
  • the visible light refers to light whose main wavelength component is in the visible light region, and does not prevent light having a wavelength component outside the visible light region.
  • ultraviolet rays refer to those whose main wavelength components are in the ultraviolet region, and do not prevent those having wavelength components outside the ultraviolet region.
  • the Micromirror Unit 5 is a device in which a number of micromirrors are spread over a single silicon chip.
  • DMU Digital Micromirror Device
  • Texas Instruments, Inc. in the United States is used. Can be.
  • This DMD consists of a series of 16-micron-square aluminum micromirrors with high reflectivity, and these micromirrors are 16.4 x 12.3 mm by CMOS semiconductor technology. Approximately 780,000 pieces are spread on a corner silicon memory chip, and each micromirror is supported by a mirror holding post on a yoke that rotates in two stable states around a diagonal line.
  • each micromirror controls the amount of light reflected from the light source.
  • Each micromirror corresponds to one pixel (dot). If 12.3 mm is represented by 768 dots, one dot has an accuracy of 0.26 mm.
  • the reflection angle of each micromirror is controlled according to the control data, and reflected light corresponding to the two-dimensional plane image is obtained.
  • the reflected light is applied to a thin layer of a photocurable resin to produce a resin cured layer having a shape corresponding to a two-dimensional planar image.
  • the modeling data storage device 15 stores modeling data for causing the DMU 5 to emit reflected light of a two-dimensional planar image.
  • the data obtained by slicing the CAD data in the layer direction is used.
  • the CAD data of this object 201 is sliced over N layers in the layer direction, and slice data for N layers is obtained.
  • the modeling data storage device 15 stores the slice data SD1 to SDN for the N layers with the layer number N and the data ID added.
  • CAD data When generating slice data SD1 to SDN from the evening, it can be easily generated by using a dedicated generation program or conversion program.
  • the light emitted from the light source 1 passes through the color filter 2, is focused by the condenser lens 3, and then enters the shirt 4. If shirt 4 is open, it passes through shirt 4 and enters DMU 5.
  • the reflection function of the DMU 5 irradiates the surface of the liquid tank 8 through the imaging lens 6 as image light of a two-dimensional planar image. Note that the color filter 2 can usually be omitted.
  • the shirt 4 can be attached to another optical path portion other than the position shown in FIG.
  • this function can be omitted because it can be replaced by full black drawing.
  • the same function can be realized by turning on and off the light source 1 instead of opening and closing the shirt.
  • FIG. 3 is a diagram schematically showing the relationship between the pixel configuration of the slice data, the pixel configuration of the DMU 5, the imaging lens, and the pixel configuration of the imaging plane according to the present embodiment.
  • the plane of mm X 267 mm is represented by 768 X 104 dots
  • the DMU 5 has the area of 12.3 mm X 164 mm, 768 X 104 dots.
  • the imaging plane is configured to express a plane of 200 mm x 267 mm by 768 x 1024 dots. If 200 mm is represented by 768 dots, one dot has an accuracy of 0.26 mm.
  • the imaging lens 6 is configured by a lens that enlarges each pixel of the DMU 5 so as to correspond to each pixel on the imaging surface.
  • the imaging lens 6 can be omitted.
  • Pixel configuration of slice data in the present invention DM
  • the relationship between the pixel configuration of the U5, the imaging lens, and the pixel configuration of the image plane is not limited to the relationship shown in Fig. 3, but the dot configuration of the DMU5 and the dot of the slice data per unit area. These relationships are set according to the target configuration and manufacturing target accuracy.
  • the layer thickness is determined by the positioning accuracy in the Z-axis direction.
  • FIG. 1 shows an embodiment in which the Z-axis operation stage 9 is lowered into the liquid tank. The configuration when the Z-axis operation stage 9 is raised from the liquid tank 8 will be described later with reference to FIG.
  • the control procedure shown in FIG. 4 is executed by a control program incorporated in the personal computer 14 in advance.
  • the mechanism section and the control section are initialized (step 401).
  • the Z-axis operation stage 9 is positioned at the initial position where the sap does not exist in the liquid tank 8 as shown in FIG. 5 (a).
  • Various counters in the personal computer 14 are set to initial values.
  • the apparatus status such as whether or not the Z-axis operation stage 9 is positioned at the initial position is checked (step 402). If there is no abnormality, next, the conditions such as the layer thickness and the one-layer curing time are set (Step 403).
  • This condition setting is input using the keyboard 16 and the pointing device 17 in accordance with the message displayed on the display device 18. For example, a value such as 0.1 mm is set as the layer thickness t.
  • the injection valve 12 is controlled via the injection valve driver 19, and the sap 7 necessary for forming the resin cured layer of N layers is supplied from the sap tank 11 to the liquid tank 8 (Step 4 0 4).
  • “1” is set as the layer number N in the layer counter (not shown) in the personal computer 14 (step 405).
  • the modeling data (slice data) of the Nth layer specified by the value of the layer count is read from the modeling data storage device 15 and input as control data to the DMU 5 (step 400). ).
  • a drive signal is input to the motor 22 of the Z-axis drive mechanism 10 via the Z-axis operation stage driver 20 to lower the Z-axis operation stage 9 from the liquid level by the layer thickness t.
  • the Z-axis operation stage 9 is positioned at a position lower than the liquid level by the layer thickness t, as shown in FIG. 5 (b).
  • the shirt 4 is controlled to the open state (step 408), and the light emitted from the light source 1 is incident on the DMU 5.
  • the modeling data of the Nth layer is input to the DMU 5 in step 406 as control data, and the reflection angle of each micromirror is controlled in accordance with the modeling data. Reflected according to data. Of these, the reflected light corresponding to the pixel that cures the sap is radiated to the liquid surface of the liquid tank 8 via the imaging lens 6, and the reflected light corresponding to the pixel that does not cure the sap is leaked to the outside. It is focused on an absorber (not shown).
  • the personal computer 14 monitors the time after the shirt 4 is opened.
  • the personal computer 14 controls the shirt 4 Input a signal and control to close (Step 410).
  • the image light of the two-dimensional plane image based on the modeling data is applied to the thin layer of one liquid level of the liquid tank 8 when the shutter 4 is opened Only for a while.
  • a laminate of four resin cured layers 6 1 is formed on the Z-axis operation stage 9.
  • the Z-axis operation stage 9 is moved to the liquid tank as shown in Fig. 6 (b). Pull it out of step 8 (step 4 13).
  • the lifted laminate 6001 is peeled off from the Z-axis operation stage 9, and is provided as a molded object for use.
  • N A method for manufacturing a laminated body of a resin cured layer composed of layers and an apparatus configuration will be described with reference to a second embodiment shown in FIG.
  • the difference from the embodiment of FIG. 1 is that instead of the liquid layer 8 of FIG. 1, a liquid layer 30 having a shallow depth is provided, and the bottom surface of the liquid layer 30 has good permeability. It is composed of a light-transmitting member 31 such as glass, and irradiates image light to one layer of sap injected into the liquid layer 30 through the light-transmitting member 31 so that one layer of resin cured product is formed. Once formed, the Z-axis drive mechanism 10 raises the Z-axis operation stage 9 by one layer, then injects the next one layer of sap and forms the next resin cured layer. Is repeated. Therefore, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.
  • the control procedure shown in FIG. 8 is executed by a control program incorporated in the personal computer 14 in advance.
  • the mechanical unit and the control unit are initialized (step 801).
  • the Z-axis operation stage 9 is positioned as shown in FIG. 9 (a).
  • various counters in the personal computer 14 are set to the initial values.
  • the apparatus status such as whether or not the Z-axis operation stage 9 is positioned at the initial position (the lowest part of the liquid tank 8) is checked (Step 802). If there is no abnormality, the conditions such as the layer thickness and the curing time for one layer are set (Step 803).
  • This condition setting is input using the keyboard 16 ⁇ pointing device 17 according to the message displayed on the display device 18.
  • the layer thickness t for example, a value such as 0.1 mm is set.
  • Step 804 moves the Z-axis operation stage 9 above the liquid level.
  • Step 804 This is to prevent the Z-axis operation stage 9 from becoming an obstacle when injecting sap.
  • “1” is set as the layer number N in the layer counter (not shown) in the personal computer 14 (step 805).
  • the modeling data (slice data) of the Nth layer specified by the value of the layer count is read from the modeling data storage device 15 and input to the DMU 5 as control data (step 806).
  • the injection valve 12 is controlled via the injection valve driver 19 to inject the sap 32 necessary for forming one resin cured layer into the liquid tank 30 from the sap ink 11. Yes (step 807).
  • the Z-axis stage 9 is positioned at a position separated (upward) by the layer thickness from the molding position of the previous layer (step 808).
  • the Z-axis operation stage 9 is set so that the lower surface of the Z-axis operation stage 9 is at the surface position of the thin layer of the first layer of sap.
  • the operating stage 9 is positioned by lowering from the home position.
  • step 809 Light emitted from the light source 1 enters the DMU 5.
  • step 806 the modeling data of the Nth layer is input to the DMU 5 as control data, and the reflection angle of each fine mirror is controlled in accordance with the modeling data. Is reflected according to the modeling data.
  • the reflected light corresponding to the pixel that cures the sap is radiated to one layer of sap 32 through the light transmission member 31 on the bottom of the liquid tank 8 via the imaging lens 6, and to the pixels that do not cure the sap.
  • the corresponding reflected light is focused on an absorber (not shown) so as not to leak outside.
  • the value of the layer number count is updated to “N + 1” (step 8 12), and further to the Nth layer (final layer). It is determined whether or not formation has been completed (step 813). If not, a drive signal is sent to the motor 22 of the Z-axis drive mechanism 10 via the Z-axis operation stage driver 20. Then, the Z-axis operation stage 9 is moved (elevated) to a fixed position on the liquid surface (step 814). This is to prevent the Z-axis operation stage 9 from hindering the sap injection as described above.
  • the flow returns to step 806, and the modeling data of the “N + 1” layer is read from the modeling data storage device 15 and input to the DMU 5 as control data.
  • the injection valve 12 is controlled via the injection valve driver 19 to inject the sap 32 necessary for forming one resin cured layer from the sap tank 11 into the liquid tank 30 ( Step 807).
  • the Z-axis stage 9 is positioned at a position separated (upward) by the layer thickness from the molding position of the previous layer (step 808).
  • the Z-axis operation is performed so that the lower surface of the first resin cured layer 901 contacts the upper surface of the second thin layer. Positioning is performed by lowering the stage 9 from the home position.
  • the Z-axis drive mechanism 10 is controlled so that the lower surface of the second resin cured layer 802 is in contact with the upper surface of the third thin layer as shown in FIG. 10 (b). Position the Z-axis operation stage 9 to form the next resin cured layer.
  • the Z-axis operation stage 9 is pulled up above the liquid tank 30 (step 813). As a result, the production of the intended laminated body 903 of the resin cured layer composed of the N layers is completed.
  • the present invention is not limited to the above-described embodiment.
  • two systems of image light are focused at the same position by two imaging lenses 6A and 6B.
  • the exposure energy can be doubled, and a configuration in which the curing time of one layer is further reduced can be achieved.
  • one layer to be formed By forming the resin cured layer 1201 by dividing it by the image light passing through the two imaging lenses 6A and 6B, a resin cured layer with a large area of Wl + W2 is formed. 1 201 can be formed in a short time.
  • FIG. 13 (a) which is an enlarged view of the broken line portion 1301
  • FIG. 13 (b) is an enlarged view of the lamination body 903, the cutting blade 13
  • the cut surface often has irregularities, and the quality of the first layer deteriorates. Therefore, it is necessary to create a layer corresponding to the cutting margin 1304 before the original first layer, as shown in FIG.
  • post-processing for shaping the boundary cut surface between the cutting margin 1304 and the first layer is required, so that the number of processes increases and the cost also increases. There is a problem.
  • a heat-peelable double-sided joining member is attached to the lower surface side of the Z-axis stage 9.
  • a sheet-like member 1442 having an adhesive property with the photocurable resin is bonded to the lower surface side of the two-sided bonding member 1401.
  • the sheet-like member 1442 a sheet-like member having good adhesion to the photocurable resin, for example, an aluminum sheet or a copper foil is used.
  • the first layer is formed on the lower surface side of the sheet-like member 1402.
  • the process is repeated for the number of times equal to the number of the resin cured layers constituting the three-dimensional shape, and when the laminated body 93 is formed, as shown in FIG.
  • the entire laminated body 903 including 401 and the sheet-shaped member 1402 is placed in a hot water tank 1403 at a temperature slightly higher than 90 ° C and heated. Due to this heating, the adhesiveness of the double-sided bonding member 1401 is lost, and as shown in FIG. 15 (a), the entire laminated body 903 including the sheet-like member 1442 is Z It can be peeled off from the shaft operation stage 9. Thereafter, the sheet-like member 1442 is peeled off from the laminate 903 so as to be wound up as shown in FIG. 15 (b).
  • the second resin cured layer 90 2 next to the first resin cured layer 90 1 In the method of filling a layer of a photo-curable resin liquid equivalent to one layer, a photo-curable resin liquid of the next layer is formed on the lower surface of the first resin cured layer 91. Bubbles are generated upon contact.
  • the lower surface of the first resin cured layer 901 is not a perfect plane as shown in FIG. 16 (a) but has a fine uneven surface 1601. From.
  • the photocurable resin liquid 1607 is injected, before the image light is irradiated, as shown in FIG. 16 (b).
  • the lowermost resin cured layer (the latest cured layer), in the example shown in Fig. 16, has an adhesive property with the photocurable resin on the lower surface side of the first resin cured layer 901.
  • No transparent sheet material 1 6 0 2 In the state where the transparent sheet-like member 1602 is interposed, a light-transmissive plate member 1603 is inserted from the direction of the arrow 1604 into the lower surface side of the transparent sheet-like member 1602, and the resin of the first layer is cured. While extruding bubbles existing in the photocurable resin liquid 1607 on the lower surface side of the layer 901, the melt or solution of the photocurable resin is brought into close contact. Then, as shown in FIG. 16 (c), the image light is irradiated with the light-transmitting plate member 1603 inserted.
  • a take-up roll 1606 holds one end of a light-transmitting plate member 1603 at a fulcrum 1605.
  • Fig. 17 (c) including the take-up roll 1606, the transparent sheet-like member 1602, and the light transmitting member 31. While moving in the direction of arrow 1701, the transparent sheet-like member 1602 was gradually peeled off from the lower surface of the lowermost resin cured layer.
  • the Z-axis stage 9 lifts the transparent sheet-like member 1602 from the lower surface of the lowermost resin cured layer by one layer.
  • the force acting on the lower surface of the lowermost resin cured layer 905 (the force pulled in the direction of the transparent sheet-like member 1602) is reduced, and the lowermost resin cured layer 905 is reduced.
  • the transparent sheet-like member 1602 can be safely peeled from the substrate.
  • FIG. 18 a method as shown in FIG. 18 can be adopted. That is, the light-transmissive plate member 1604 is pulled out from the state shown in FIG. 18 (a) as shown in FIG. 18 (b), and then the transparent sheet-like member 1602 is removed from the plate member 1602.
  • the peeling member 1801 which presses in the direction of the space formed between the lower surface of the lowermost resin cured layer 905 and the resin cured layer 905, is moved in the direction of the arrow 1802 in the figure (the plate member 1603).
  • FIG. 19 a method as shown in FIG. 19 can be adopted. That is, as shown in FIG. 18 (a) from the state shown in FIG. 18 (a), as shown in FIG. 18 (b), the rotation fulcrum on one side of the transparent sheet-like member 1602 and the light-transmissive plate member 1603.
  • the transparent sheet member 1602 and the light-transmissive plate member 1603 are gradually inclined with the center at 1901, and the transparent sheet member 1602 is the lowermost resin cured layer. This is a method of peeling from the lower surface of 905.
  • the transparent sheet-shaped member 1 It can be completely peeled off.
  • the transparent sheet-like member 1602 and the light-transmitting plate member 1603 are not bonded to each other. Irregularities occur on the front and back surfaces of the resin layer, and air bubbles existing in the irregularities cause irregularities on the boundary surface of the cured resin layer, weakening the bonding strength between the layers, and may cause the layers to fall off during the lamination process.
  • a suction hole 2 provided in a part of the light transmitting plate member 1603 and the light transmitting member 31 is provided.
  • the air existing between the transparent sheet-like member 1602 and the light-transmissive plate member 1603 is sucked from the substrate 101, and the transparent sheet-like member 1602 is turned into the light-transparent plate.
  • the member was brought into close contact with 163.
  • a rectangular groove 2002 is formed as shown in FIG. 20 (b). Air is sucked in from a suction hole 2001, which is opened to a part of the groove 2002.
  • the number of suction holes and the shape of the grooves can be configured in an arbitrary number and in an arbitrary shape depending on the size of the light-transmitting plate member 1603 and the transparent sheet-like member 1602. .
  • the transparent sheet-like member 1602 is brought into close contact with the light-transmissive plate member 1603, and it is possible to prevent a decrease in bonding strength between layers due to bubbles.
  • the control program operating in the personal computer can be provided to a general user by being recorded on a recording medium such as a CD-ROM.
  • a recording medium such as a CD-ROM.
  • the control program may be combined with a conversion program for slicing CAD data and recorded on one recording medium.
  • the fine mirrors are arranged on a flat plate.
  • Control data for forming a two-dimensional plane image is input to the element, the reflection angle of each fine mirror with respect to the incident light from the light source is controlled, and the reflected light corresponding to the two-dimensional plane image is extracted. Since the reflected light is applied to the thin layer as the image light, loss of light energy is reduced, and a photocured object having a shape corresponding to a two-dimensional plane image can be manufactured in a short time.
  • the black-and-white contrast ratio is improved, and a highly accurate photocured object can be manufactured. Furthermore, since there is no obstacle such as a mesh electrode in the optical path, means for avoiding the obstacle is not required, and the device configuration can be simplified.
  • the reflection angle of the mirror By controlling the reflection angle of the mirror with respect to the incident light from the light source, extracting the reflected light corresponding to the two-dimensional plane image, and irradiating the reflected light as the image light to the thin layer, the same as above.
  • the device configuration can be simplified, and this is extremely useful when creating three-dimensional three-dimensional models of various shaped objects.

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

Abstract

Selon cette invention, on introduit des données de commande de façon à former une image plane bidimensionnelle sur un élément de miroir fin formé par agencement de miroirs fins sur une plaque plane ; on régule un angle de réflexion de la lumière incidente provenant d'une source de lumière de chaque miroir fin, on recueille la lumière réfléchie correspondant à l'image plane bidimensionnelle ci-dessus, on fait briller la lumière réfléchie sur une couche mince sous forme de lumière image, et met à durcir une résine dans la couche mince. On répète les étapes précitées de façon à produire une matière configurée photodurcie tridimensionnelle issue du laminage des couches de résine durcies dont la forme correspond à l'image plane tridimensionnelle formée par la lumière image.
PCT/JP2000/004727 1999-07-15 2000-07-14 Procede et dispositif de production pour matiere formee polymerisable WO2001005575A1 (fr)

Applications Claiming Priority (2)

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JP11/201264 1999-07-15
JP20126499 1999-07-15

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WO2001005575A1 true WO2001005575A1 (fr) 2001-01-25

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2235606A1 (es) * 2003-06-20 2005-07-01 Universidad De Alicante Sistema de polimerizacion por laser disperso.
WO2014201486A1 (fr) 2013-06-17 2014-12-24 Way To Production Gmbh Installation permettant la constitution par couches d'un corps et cuvette pour ladite installation
WO2016049666A1 (fr) 2014-09-29 2016-04-07 Way To Production Gmbh Équipement de construction en couches d'un corps et dispositif de démoulage à cet effet
JP2020524623A (ja) * 2017-06-21 2020-08-20 エシロール・アンテルナシオナル 光造形物の製造方法および光造形装置

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US4575330A (en) * 1984-08-08 1986-03-11 Uvp, Inc. Apparatus for production of three-dimensional objects by stereolithography
JPH02128829A (ja) * 1988-11-08 1990-05-17 Osaka Prefecture 光学的造形法
JPH06246838A (ja) * 1993-02-26 1994-09-06 Teijin Seiki Co Ltd 光造形装置
US5447822A (en) * 1989-09-28 1995-09-05 3D Systems, Inc. Apparatus and related method for forming a substantially flat stereolithographic working surface
JPH08192469A (ja) * 1995-01-20 1996-07-30 Ushio Inc 光硬化性樹脂の硬化装置
EP0775570A2 (fr) * 1995-11-21 1997-05-28 CMET, Inc. Appareil de modelage par photosolidification avec exposition d'intensité homogène sur la surface exposée
JPH09141749A (ja) * 1995-09-22 1997-06-03 M S Tec:Kk 立体像の造形方法及びその装置

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Publication number Priority date Publication date Assignee Title
US4575330A (en) * 1984-08-08 1986-03-11 Uvp, Inc. Apparatus for production of three-dimensional objects by stereolithography
US4575330B1 (fr) * 1984-08-08 1989-12-19
JPH02128829A (ja) * 1988-11-08 1990-05-17 Osaka Prefecture 光学的造形法
US5447822A (en) * 1989-09-28 1995-09-05 3D Systems, Inc. Apparatus and related method for forming a substantially flat stereolithographic working surface
JPH06246838A (ja) * 1993-02-26 1994-09-06 Teijin Seiki Co Ltd 光造形装置
JPH08192469A (ja) * 1995-01-20 1996-07-30 Ushio Inc 光硬化性樹脂の硬化装置
JPH09141749A (ja) * 1995-09-22 1997-06-03 M S Tec:Kk 立体像の造形方法及びその装置
EP0775570A2 (fr) * 1995-11-21 1997-05-28 CMET, Inc. Appareil de modelage par photosolidification avec exposition d'intensité homogène sur la surface exposée

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2235606A1 (es) * 2003-06-20 2005-07-01 Universidad De Alicante Sistema de polimerizacion por laser disperso.
WO2014201486A1 (fr) 2013-06-17 2014-12-24 Way To Production Gmbh Installation permettant la constitution par couches d'un corps et cuvette pour ladite installation
WO2016049666A1 (fr) 2014-09-29 2016-04-07 Way To Production Gmbh Équipement de construction en couches d'un corps et dispositif de démoulage à cet effet
JP2020524623A (ja) * 2017-06-21 2020-08-20 エシロール・アンテルナシオナル 光造形物の製造方法および光造形装置

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