JP5910869B2 - 3D modeling method - Google Patents

Description

The present invention relates to a three-dimensional modeling method , and more particularly to a three-dimensional modeling method for forming a three-dimensional modeled object (three-dimensional object) using a layered modeling method.

  As a method for forming (modeling) a three-dimensional modeled object, a three-dimensional layered modeling method (hereinafter simply referred to as “layered modeling method”) is known. The layered modeling method generates hierarchical data indicating each hierarchical shape when the three-dimensional structure is cut into layers in a specific direction on the basis of the three-dimensional data of the three-dimensional structure to be modeled. A three-dimensional structure is formed by sequentially stacking material layers corresponding to each hierarchical data. Here, as the layered modeling method, for example, an optical modeling method using a photocurable resin, a powder layering method using a metal or resin powder, a molten resin deposition method for depositing a molten resin, paper or plastic sheet or A thin plate lamination method for laminating metal thin plates is known.

  These additive manufacturing methods can manufacture 3D objects directly from 3D CAD (computer aided design) data, so that 3D CAD is widely used and used in design and manufacturing sites. This is a technology that has been rapidly spreading. The three-dimensional structure formed by such an additive manufacturing method is arranged on a horizontal table or floor, for example, or framed on a wall surface for the purpose of display or display.

  Among the various additive manufacturing methods described above, the powder lamination method is a method in which a powder material is thinly spread on the upper surface of the stage, and the powder material in the region corresponding to the hierarchical data described above is bonded with a binder (binder), heat, a photocuring substance, or the like. A three-dimensional structure is formed by repeating the process of curing (bonding) and forming a combined body composed of one material layer while being laminated upward. In this powder laminating method, a shaped object is formed while being laminated in the laminated powder material. Therefore, for example, a modeled object with a biased center of gravity or an overhang part is supported by the surrounding uncured (unbonded) powder material, so a supporting member for preventing the modeled object from being overturned or damaged is not required. By removing the uncured powder material after forming, a three-dimensional structure can be easily and satisfactorily formed. In particular, by applying an inkjet method in which the binder is discharged from a printer head used in an inkjet printer, as a technique for forming a bonded body of each layer and bonding (fixing) the bonded bodies together between the layers, A three-dimensional structure can be easily and satisfactorily formed using the already established inkjet printer technology. The three-dimensional modeling technique using such a powder lamination method is described in detail in Patent Document 1, for example.

JP 2001-353787 A

  However, when forming a three-dimensional structure by the layered manufacturing method as described above, there are the following problems. That is, in the additive manufacturing method, as described above, a combined body of layers having a shape corresponding to the hierarchical data of the three-dimensional object is sequentially stacked on the stage to form a three-dimensional object. Therefore, in general, the higher the height of the three-dimensional structure formed on the stage, the more the number of layers increases, and the longer the time required for modeling (modeling time) is. In addition, in the case of a method in which a three-dimensional structure is formed in the laminated material layer as in the powder lamination method described above, other than the formation region of the three-dimensional structure (that is, around the three-dimensional structure) However, the powder material is substantially not used for a three-dimensional structure and has a problem that the utilization efficiency of the material is low. Therefore, there is a problem that the production efficiency is low when a desired three-dimensional structure is formed (produced).

Therefore, in view of the above-described problems, an object of the present invention is to provide a three-dimensional modeling method that can improve production efficiency when forming a three-dimensional modeled object using a layered modeling method.

The three-dimensional modeling method according to the present invention is:
Curing the base forming region of the uncured base layer material layer to form the base,
A three-dimensional modeled part is formed in the three-dimensional modeled part forming region on the one surface side of the base by repeatedly laminating an uncured three-dimensional modeled part layered material layer on the base layered material layer. And forming a three-dimensional modeled object having the base part and the three-dimensional modeled part integrally, and forming a fixed projection fixed to the bottom surface of the base part in addition to the three-dimensional modeled part forming region. .

  According to the present invention, production efficiency can be improved when a three-dimensional structure is formed using an additive manufacturing method.

It is a schematic block diagram which shows 1st Embodiment of the three-dimensional structure to which the three- dimensional modeling method which concerns on this invention is applied . It is the schematic which shows the assembly | attachment method to the baseplate of the three-dimensional structure main body which concerns on 1st Embodiment. It is the schematic which shows the assembly | attachment method to the frame of the three-dimensional structure main body which concerns on 1st Embodiment. It is a flowchart which shows an example of the modeling method of the three-dimensional structure based on 1st Embodiment. It is a flowchart which shows an example of the molded object main body and fixed protrusion lamination | stacking modeling process in the three-dimensional modeling method which concerns on 1st Embodiment. It is a schematic process figure (the 1) which shows the formation state of the three-dimensional modeling object main part and fixed projection in the modeling object main part and fixed projection layered modeling process concerning a 1st embodiment. It is a schematic process figure (the 2) which shows the formation state of the three-dimensional structure main body and fixed protrusion in the molded object main body and fixed protrusion lamination | stacking modeling process which concern on 1st Embodiment. It is the schematic which shows the structure and assembly | attachment method of the three-dimensional molded item used as a comparative example. It is a schematic process figure which shows the three-dimensional modeling method used as a comparative example. It is the schematic which shows the assembly | attachment method to the baseplate of the three-dimensional structure main body which concerns on 2nd Embodiment. It is a schematic process drawing which shows the formation state of the three-dimensional structure main body and fixed protrusion which concern on 2nd Embodiment. It is a conceptual diagram for demonstrating the effect of the three-dimensional structure based on 2nd Embodiment.

Hereinafter, the three-dimensional modeling method according to the present invention will be described in detail with reference to embodiments.
<First Embodiment>
(3D objects)
First, a three-dimensional structure to which the three- dimensional modeling method according to the present invention is applied will be described.

FIG. 1 is a schematic configuration diagram illustrating a first embodiment of a three-dimensional structure to which the three- dimensional modeling method according to the present invention is applied . Fig.1 (a) is a schematic perspective view which shows the surface side of the three-dimensional structure which concerns on this embodiment, FIG.1 (b) is a schematic perspective view which shows the back surface side of the three-dimensional structure which concerns on this embodiment. FIG. 1 (c) corresponds to the IC-IC line in the three-dimensional structure shown in FIG. 1 (a) (in this specification, corresponds to the Roman numeral “1” shown in FIG. 1 (a)). For the sake of convenience, “I” is used as a symbol for the reference symbol.). FIG. 2 is a schematic view showing a method for assembling the three-dimensional structure main body to the base plate according to the present embodiment. Fig.2 (a) is a schematic perspective view which shows the assembly method to the baseplate of the three-dimensional structure main body which concerns on this embodiment, FIG.2 (b) shows the assembly state to the baseplate of a three-dimensional structure main body. 2C is a schematic perspective view of the IIC-IIC line in the assembled state shown in FIG. 2B (in this specification, the Roman numeral “2” shown in FIG. 2B). It is a schematic cross-sectional view showing a cross-sectional structure along the line “II” for convenience. FIG. 3 is a schematic view showing a method of assembling the three-dimensional structure main body to the frame according to the present embodiment.

One embodiment of the three- dimensional structure to which the three-dimensional structure method according to the present invention is applied , as shown in FIGS. 1A and 1B, the three-dimensional structure main body 1 is attached to, for example, a frame 50 or a frame. Displayed or displayed on a vertical surface such as a wall surface in the assembled (framed) state. As shown in FIGS. 1A to 1C, the three-dimensional structure includes a three-dimensional structure main body 1, a fixed protrusion (positioning member) 30, a base plate (base material) 40, and a frame 50. Have.

  For example, as shown in FIGS. 1A, 1C, and 2A, the three-dimensional structure body 1 includes a base portion 20 having a rectangular flat plate structure, and a surface side of the base portion 20 (see FIG. 1 (c) and FIG. 2 (a) on the upper surface side; one surface side), and a three-dimensional structure 10 having a relief (relief) -like protruding shape. Here, the three-dimensional model | molding part 10 and the base part 20 are integrally formed with the same laminated material using the layered modeling method mentioned above.

  Specifically, as illustrated in FIG. 2A, the three-dimensional modeling unit 10 protrudes, for example, in an arbitrary region on the surface side of the base portion 20 with an arbitrary protrusion amount (protrusion size or shape). It is provided as follows. Here, for convenience of explanation, the three-dimensional modeling part 10 is not uniformly arranged with respect to the shape (rectangular shape) of the surface of the base part 20, and the weight balance is uneven (the right side of the drawing is heavily biased). ) Indicates a case having a shape.

  Further, the base portion 20 has a flat plate-like structure having a predetermined planar spread, and constitutes a relief (relief) over substantially the entire surface side including the integrally formed three-dimensional structure portion 10. ing. Further, the back surface side of the base portion 20 (the lower surface side in FIG. 1C and FIG. 2A; the other surface side) has a flat surface that is in direct contact with the upper surface of the base plate 40 in FIG. As shown in FIGS. 2A and 2C, a plurality of fitting holes (first fitting holes) 21 are provided at arbitrary positions on the back surface side. The fitting hole 21 has a cylindrical counterbore shape that is shallower than the thickness of the base portion 20 (the dimension between the front surface and the back surface), and the fitting hole 21 reaches the surface side of the base portion 20 so that the appearance of the relief The depth from the back surface is set so as not to affect.

  For example, as shown in FIGS. 1C and 2A to 2C, the base plate 40 has a larger planar spread than the base portion 20 having a rectangular flat plate structure (that is, the vertical and horizontal dimensions are large). ) It has a rectangular flat plate structure. A plurality of fitting holes (second fitting holes) 41 are provided on the upper surface side (one surface side) of the base plate 40 at positions corresponding to the fitting holes 21 provided on the back surface side of the base portion 20. It has been. For example, as shown in FIGS. 1 (c) and 2 (c), the fitting hole 41 is a cylindrical through hole that penetrates the base plate 40 in the thickness direction (the direction in which the upper surface and the lower surface face each other; the vertical direction in the drawing). Alternatively, it may have a cylindrical counterbore shape that is shallower than the thickness of the base plate 40 (the dimension between the upper surface and the lower surface). The base plate 40 is formed by a manufacturing method different from that of the three-dimensional structure main body 1 and is formed of a material such as wood. Since the plaster is heavy and brittle, the wood used for the base plate 40 is more flexible than the plaster, so that the three-dimensional structure main body 1 is easy to fit into the fixed protrusion 30 and is light. In addition, the advantage is that the three-dimensional structure in a state where the base plate (base material) 40 is accommodated in the frame 50 does not become heavy and the fitting hole 41 can be easily formed.

  As shown in FIG. 1C and FIGS. 2A to 2C, the fixing protrusion 30 includes a fitting hole 21 provided on the back surface side of the base portion 20 of the three-dimensional structure body 1, and The base plate 40 has a cylindrical shape that fits in both of the fitting holes 41 provided on the upper surface side. Here, the shape and dimensions of the fixed protrusion 30 will be described in detail later. In the present embodiment, at least one of the diameter D0 and the length L0 of the fixed protrusion 30 shown in FIGS. 2A and 2C is used. One side is set to be the projection height (height up to the highest point) H1 or less of the three-dimensional structure 10 that protrudes from the surface (upper surface of the drawing) of the base portion 20 of the three-dimensional structure body 1.

  That is, the fixed projection 30 is fitted in association with both the fitting hole 21 on the lower surface side of the base portion 20 and the fitting hole 41 on the upper surface side of the base plate 40 to thereby fit the three-dimensional structure body 1. Are positioned and fixed at a predetermined position on the upper surface of the base plate 40 and assembled. By such a fixing method, even if the weight balance of the three-dimensional structure main body 1 is not uniform, the three-dimensional structure main body 1 is fixed to a predetermined position on the upper surface of the base plate 40 without causing a shift. The Here, when the three-dimensional structure main body 1 is positioned and fixed to the base plate 40, as shown in FIGS. 2 (b) and 2 (c), the three-dimensional structure main body 1 is a plan view from the upper side of the drawing. The fixed position is set so that the peripheral edge of the base plate 40 is exposed around the base portion 20 of one.

  The frame 50 includes, for example, an image frame 51 having a frame shape, a back plate 52, a fixing claw 53, and a hanging portion 54 as shown in FIGS. Yes. Specifically, the image frame 51 includes a storage part 51h and an opening part 51w, as shown in FIGS. As shown in FIGS. 1C and 3, the storage portion 51 h is provided with a counterbore shape in a substantially entire region except the peripheral portion on the back side (the lower surface side of the drawing) of the image frame 51, and the base plate described above. The three-dimensional structure main body 1 assembled in 40 is stored. As shown in FIGS. 1C and 3, the opening 51w communicates the surface side (upper surface of the drawing) of the image frame 51 and the storage portion 51h, and is shown in FIGS. 1A and 1C. Thus, it is provided so that the surface side of the three-dimensional structure main body 1 accommodated in the accommodating part 51h may be exposed.

  Here, the image frame 51 is a state in which the three-dimensional structure main body 1 and the base plate 40 are stored in the storage portion 51h, as shown in FIG. The surface on which the portion 10 is formed) is exposed through the opening 51w, and the peripheral portion of the base plate 40 to which the three-dimensional structure main body 1 is assembled comes into contact with the inner surface of the image frame 51. The frame shape is set so that the three-dimensional structure main body 1 is positioned and fixed with respect to the opening 51w (or the image frame 51). Thereby, the area | region of the relief part (surface side) of the three-dimensional structure main body 1 exposed from the opening part 51w is prescribed | regulated.

  As shown in FIGS. 1B, 1C, and 3, the back plate 52 is provided on the back side of the three-dimensional structure main body 1 and the base plate 40 stored in the storage portion 51h of the image frame 51 (FIG. 1C ) And the lower surface side of FIG. 3, the housing 51 h is closed, and the pressing force by the fixing claw 53 is uniformly applied to the base plate 40.

  As shown in FIGS. 1B and 1C, the fixing claw 53 is provided at a plurality of locations (each side in the figure) on the peripheral edge of each side on the back side of the image frame 51 (the lower surface side in FIG. 1C). (4 locations in total). The fixing claw (register mark) 53 has a configuration in which a rotating end (front end portion) is inclined in the inner direction of the storage portion 51h while rotating along, for example, the back side of the image frame 51 about the fixed shaft 53a. The three-dimensional structure main body 1 and the base plate 40 stored in the storage unit 51 h are pressed and fixed via the back plate 52.

  For example, as shown in FIG. 1B, the hanging portion 54 is provided at, for example, the midpoint of the upper side of the peripheral portion of the back side of the image frame 51 (the lower surface side of FIG. 1C). It is used when the frame 50 in which the main body 1 is incorporated is suspended from a vertical surface such as a wall surface.

  The three-dimensional structure having such a configuration is first assembled by positioning and fixing the three-dimensional structure body 1 to the base plate 40 via the fixing protrusions 30 as shown in FIGS. After that, as shown in FIG. 3, it is stored in the storage portion 51 h of the image frame 51, the back plate 52 is closed from the back side of the image frame 51, and the fixing claw 53 is rotated and fixed by pressing. A structure in which the three-dimensional structure main body 1 is incorporated into the frame 50 (framed) as shown in FIGS. The frame 50 is displayed or posted by suspending a suspending portion 54 provided on the back side so as to engage with a suspending member protruding from, for example, a wall surface.

  In the present embodiment, the case where the three-dimensional structure main body 1 and the base plate 40 are positioned and fixed by the fixing protrusion 30 having a columnar shape has been described, but the present invention is not limited to this. That is, it is sufficient if the fitting hole 21 provided on the back surface side of the base portion 20 of the three-dimensional structure body 1 and the fitting hole 41 provided on the upper surface of the base plate 40 have a shape to be fitted. For example, it may have a prismatic shape or a spherical shape. Moreover, one side of the columnar member may have a columnar shape, and the other side may have a prismatic shape.

  Moreover, in this embodiment, although the structure using the three fixed protrusion 30 was shown as a structure which positions and fixes the three-dimensional structure main body 1 and the base plate 40, this invention is not limited to this. Absent. In other words, as long as the three-dimensional structure main body 1 and the base plate 40 can be positioned and fixed, one or a plurality of fixing protrusions 30 may be used. For example, when only one fixed protrusion 30 is used, the cross-sectional shape of the fixed protrusion 30 is not a point-symmetrical shape such as the circular shape shown in the present embodiment or a left-right asymmetric shape, such as a triangle or pentagon. Alternatively, by using an unequal side polygon or the like, it is possible to prevent a malfunction (assembly error) in which the three-dimensional structure body 1 is mistakenly positioned and fixed on the base plate 40 while being rotated (vertically inverted) around the fixing protrusion 30. can do. Further, for example, even when two fixed protrusions 30 are used, the arrangement of the fitting holes 21 and 41 into which the fixed protrusions 30 are fitted is arranged at a position that is not point-symmetric with respect to the center point of the planar shape of the base plate 40. By doing so, or by making the cross-sectional shapes and dimensions of the fixing protrusions 30 different from each other, the above-described assembly errors can be prevented. It is possible to use four or more fixing protrusions 30. In this case, high accuracy is required for the arrangement and hole dimensions of the fitting holes and the outer dimensions of the pins at the time of manufacture. Therefore, as shown in the present embodiment, the use of three or fewer fixing protrusions 30 can easily prevent an assembly error, which is practically preferable.

  Further, in the present embodiment, after the base plate 40 to which the three-dimensional structure main body 1 is assembled is stored in the storage portion 51 h of the frame 50, the storage portion 51 h is closed by the back plate 52, and the back plate 52 is fixed to the nail. Although the configuration in which the base plate 40 is pressed by 53 and pressed against the image frame 51 is shown, the present invention is not limited to this. That is, using the configuration in which the base plate 40 and the back plate 52 are integrated (that is, without using the back plate 52), the base plate 40 on which the three-dimensional structure main body 1 is assembled is stored in the storage unit 51h. The part 51h may be closed, and the back surface side of the base plate 40 may be directly pressed by the fixing claw 53 to press the base plate 40 against the image frame 51 and fix it.

  2A to 2C, the three-dimensional structure main body 1 has the fixed protrusion 30 fitted in the fitting hole 21 on the flat surface of a table or the like without using the base plate 40. You may mount by making it contact. In this case, the fixed protrusion 30 has a flat bottom surface in contact with the base, and the fitting holes 21 are arranged at three or more locations so that the three-dimensional structure main body 1 is not inclined and unstable. It is preferable that the position of the center of gravity of the polygon having each position as a vertex matches or approximates the position of the center of gravity of the three-dimensional structure 10 and the base 20. Since the bottom surface of the three-dimensional structure 10 and the base portion 20 arranged in this manner is higher than the flat surface of the table, the three-dimensional structure main body 1 can give a more three-dimensional impression. .

(Three-dimensional modeling method)
Next, a method (three-dimensional modeling method) for forming the above-described three-dimensional model will be described.
FIG. 4 is a flowchart illustrating an example of a modeling method for a three-dimensional structure according to the present embodiment. FIG. 5 is a flowchart illustrating an example of a modeled object main body / fixed protrusion layered modeling process in the three-dimensional modeling method according to the present embodiment. FIG. 6 and FIG. 7 are schematic process diagrams illustrating the formation state of the three-dimensional structure main body and the fixed protrusions in the three-dimensional object main body / fixed protrusion layered manufacturing process according to the present embodiment. Here, a case will be described in which the above-described powder lamination method is applied to form the three-dimensional structure main body and the fixed protrusion in the additive manufacturing process.

  For example, as shown in FIG. 4, the three-dimensional modeling method according to the present embodiment is roughly a three-dimensional data preparation step (S101), a hierarchical data generation step (S102), and a three-dimensional object main body / fixed protrusion layered modeling step ( S103) and a powder removal / removal step (S104). In the present embodiment, when the three-dimensional structure 10 is formed on the surface of the base portion 20 of the three-dimensional structure main body 1 described above in the three-dimensional structure main body / fixed protrusion laminate modeling step, the three-dimensional structure main body 1 is formed. The fixing protrusion 30 is simultaneously formed in the region to be formed.

  First, in the three-dimensional data preparation step (S101), the three-dimensional structure main body 1 (the three-dimensional structure portion 10, the base portion 20) and the fixed protrusions to be formed in the three-dimensional object body / fixed protrusion layered formation step (S103). 30 three-dimensional CAD data are prepared. In the three-dimensional data preparation step (S101), the arrangement (formation position) of the three-dimensional structure main body 1 and the fixed protrusion 30 on the modeling stage of the three-dimensional modeling apparatus based on the prepared three-dimensional CAD data. To decide. Specifically, the three-dimensional structure main body 1 including the three-dimensional structure 10 and the base 20 is on an area where the base 20 is formed and integrated with the surface (upper surface) of the base 20. The formation area of the fixed protrusion 30 is set in a space other than the area where the three-dimensional structure 10 provided in the area is formed (see FIG. 7C). At this time, the formation area of the fixed protrusion 30 is set to a space equal to or less than the protruding height of the three-dimensional structure 10. Therefore, as shown in FIGS. 2A and 2C, the fixed protrusion 30 has at least one of the diameter D0 or the length L0 protruding from the surface of the base portion 20. The height is set to H1 or less. In other words, this is a space on the formation region of the base portion 20 that is not higher than the protrusion height H1 of the three-dimensional structure 10 and the three-dimensional structure 10 is not formed (the formation region of the three-dimensional structure 10). This means that the diameter D0 and the length L0 and the arrangement of the fixed protrusions 30 are set so that a plurality (all) of the fixed protrusions 30 are accommodated in the space.

  In the three-dimensional data preparation step (S101), the powder material constituting the three-dimensional structure composed of the three-dimensional structure main body 1 and the fixed protrusion 30 and the binder for bonding and curing the powder material. (Binder) is prepared. In the three-dimensional modeling method using the powder laminating method according to the present embodiment, it is possible to apply gypsum such as α gypsum and resin powder such as starch, polypropylene, polycarbonate, polyethylene terephthalate, nylon as the powder material, The binder may contain a catalyst for allowing the powder material itself to undergo a curing reaction. In this case, a sulfate is preferable when the powder material is gypsum. The binder may be a resin adhesive. Here, the bond includes at least one of chemical bond and physical adhesion.

  Next, in the hierarchical data generation step (S102), based on the prepared three-dimensional CAD data, the upper surface of the modeling stage when the three-dimensional modeling apparatus is used to form a three-dimensional modeled object is used as the reference plane. Hierarchical data is generated for each layer that has been cut into pieces when the three-dimensional structure main body 1 is cut into a plurality of layers in a parallel plane. Here, in this embodiment, as mentioned above, it fixes to the space where the base part 20 and the three-dimensional model | molding part 10 are not formed on the area | region in which the base part 20 of the three-dimensional structure main body 1 is formed. In this structure, the protrusion 30 is formed. And in order to manufacture efficiently, at least one part of the several hierarchy of the powder material for forming the fixed protrusion 30 is with at least one part of the several hierarchy of the powder material for forming the three-dimensional model | molding part 10. Hierarchical data of each layer is generated when the fixing protrusion 30 is cut into a plurality of layers (divided) in a plane parallel to the reference surface, which is the same as the case of the three-dimensional modeling unit 10 so as to be the same.

  Next, the model body / fixed projection layered molding process (S103) includes, for example, as shown in FIG. 5, a powder material layer forming step (S111), a model body / fixed projection combined body forming step (S112), A body stacking step (S113).

  First, in the powder material layer forming step (S111), as shown in FIG. 6A, an uncured powder material is formed to a predetermined thickness on the upper surface of the modeling stage 110 of the three-dimensional modeling apparatus (not shown). As a result, the powder material layer 11-1 of one layer (that is, the first layer) is formed. The thickness of the powder material layer 11-1 for one layer is set to about 0.1 mm or more, for example.

  Next, in the formed article main body / fixed protrusion combined body formation step (S112), the powder material layer 11-1 is selectively selected based on the hierarchical data of each layer of the three-dimensional molded article main body 1 generated from the three-dimensional CAD data. And a combined body corresponding to the hierarchical shape of the three-dimensional structure main body is formed on the layer. Specifically, as shown in FIG. 6B, in the hierarchical data of the three-dimensional structure main body 1, the upper surface of the modeling stage 110 is used as a reference surface, and the first layer is the first layer from the reference surface side. Based on the hierarchical data, the binder discharge unit 120 is scanned, and the binder 121 is discharged from the binder discharge unit 120 into the region corresponding to the hierarchical data in the first layer of the powder material layer 11-1. . That is, the layer shape of the first layer of the base portion 20 of the three-dimensional structure main body 1 is drawn with the dropped binder 121 on the powder material layer 11-1. Then, as the binder 121 is cured, the powder material of the powder material layer 11-1 in the region in which the binder 121 has penetrated is bonded and cured as shown in FIG. A combined body 20-1 corresponding to the hierarchical shape of the hierarchy is formed. At this time, in the formation region of the combined body 20-1, the binder is not dropped in the region 21-1 corresponding to the fitting hole 21 provided on the back surface side (the lower surface side of the drawing) of the base portion 20, The powder material remains in an uncured state. Here, the binder discharge unit 120 described above includes a discharge head equivalent to a printer head used in an inkjet printer or a printer head used in an inkjet printer.

  Next, in the bonded body stacking step (S113), the above-described powder material layer forming step (S111) and the molded article main body / fixed protrusion combined body forming step (S112) are repeated to form the powder material layer of each layer. The base 20 is formed by stacking the combined bodies. Specifically, as shown in FIG. 6D, the powder material is deposited flat on the upper surface of the first level powder material layer 11-1 on the modeling stage 110 so as to have a predetermined thickness. Then, the powder material layer 11-2 of the second layer is formed. Here, the modeling stage 110 moves down by the thickness of the powder material layer 11-2 of the second layer in the tank 109 together with the powder material layer 11-1 of the first layer, and then the powder material of the second layer The layer 11-2 is deposited on the first level powder material layer 11-1.

  Next, as shown in FIG. 6 (d), the binder ejection unit 120 is scanned based on the hierarchical data of the second layer that is the second layer from the reference plane side among the hierarchical data of the three-dimensional structure body 1. Then, the binder 121 is discharged and penetrated into the area corresponding to the hierarchical data of the powder material layer 11-2 of the second hierarchical level. When the binder 121 is cured, as shown in FIG. 7A, the powder material of the powder material layer 11-2 in the region where the binder 121 has penetrated is bonded and cured, and the second layer of the base portion 20 is cured. A combined body 20-2 corresponding to the hierarchical shape is formed.

  At this time, when the modeling stage 110 is viewed from above in the plan view, the powder material in the second layer formed in a region that overlaps the combination 20-1 formed in the powder material layer 11-1 in the first layer. In the combined body 20-2 of the layer 11-2, since the dropped binder 121 reaches the combined body 20-1 in the first layer, the combined body 12-1 in the first layer and the combined body 12 in the second layer. -2 is cured. That is, in the region where the lower layer conjugate and the upper layer conjugate are formed so as to overlap in a planar manner, the upper layer and the lower layer conjugate are formed as a unitary conjugate. As described above, the base 20 is formed by the combined bodies 20-1 and 20-2 formed in a stacked manner, and a region in which the powder material is uncured is formed on the back side of the base 20. It is formed as a fitting hole 21.

  Next, the combined body stacking step (S213) is repeated to form the three-dimensional structure 10 and the fixed protrusion 30 on the powder material layer on which the base portion 20 is formed. Specifically, as shown in FIG. 7B, the modeling stage 110 has the thickness of the powder material layer 11-3 of the third layer in the tank 109 together with the powder material layers 11-1 and 11-2. Then, a third level powder material layer 11-3 is deposited on the second level powder material layer 11-2. Of the hierarchical data of the three-dimensional structure 1, the powder material layer 11-3 is selectively hardened based on the third layer hierarchical data that is the third layer from the reference plane side. In the layer 11-3, the combined body 10-1 corresponding to the hierarchical shape of the first layer of the three-dimensional structure 10 is formed. At the same time, as shown in FIG. 7B, based on the hierarchical data of the fixing protrusion 30, in the region of the powder material layer 11-3 located above the formation region of the base portion 20, A combined body 30-1 corresponding to the hierarchical shape of the first layer of the fixing protrusion 30 is formed.

  By repeating such a process of forming a combined body based on the hierarchical data of the three-dimensional structure main body 1 (three-dimensional modeling portion 10) and a combined body based on the hierarchical data of the fixed protrusion 30 on each powder material layer. For example, as illustrated in FIG. 7C, in the powder material layers 11-3 to 11 -E, in the space above the formation region of the base portion 20, the combined bodies 10-1 to 10-1 constituting the three-dimensional structure 10. 10-E and the combined bodies 30-1 to 30-E constituting the fixed protrusion 30 are simultaneously laminated. At this time, the three-dimensional modeling part 10 is formed integrally with the base part 20, while the fixed protrusion 30 is separated from the base part 20 and the three-dimensional modeling part 10 or in the powder removal / removal step S104. It is formed so that it can be easily separated from the base part 20 and the three-dimensional modeling part 10. Further, as described above, the fixed protrusion 30 has at least one of the diameter D0 and the length L0 equal to or less than the total thickness of the powder material layers 11-3 to 11-E formed on the base portion 20. It is set to be. Here, the total thickness of the powder material layers 11-3 to 11-E corresponds to the protruding height H1 of the three-dimensional structure 10 as shown in FIG.

  In this way, the powder material cured in the powder material 101 laminated on the modeling stage 110 as shown in FIG. 7C by each step of the molded article main body / fixed protrusion laminated modeling step (S103). 101, the three-dimensional structure main body 1 including the three-dimensional structure 10 and the base 20 is integrally formed, and the fixed protrusion 30 is formed substantially independently of the three-dimensional structure main body 1. . Here, the formed three-dimensional structure main body 1 and the fixed protrusion 30 are formed in a state of being embedded in the powder material 101 including the powder material layers 11-1 to 11-E stacked on the modeling stage 110. Since the surrounding is filled with the uncured powder material 101 and supported, for example, even if the center of gravity of the three-dimensional structure body 1 is biased or there is an overhang portion, there is no fall or damage. Is prevented.

  Next, in the powder removal / removal step (S104), the uncured powder material 101 laminated on the modeling stage 110 is removed, and the exposed three-dimensional structure main body 1 and the fixed protrusion 30 are taken out. Specifically, as illustrated in FIG. 7D, for example, the powder material 101 is sucked and discharged from a powder discharge port (not shown) provided in the modeling stage 110, and the powder material is discharged from the modeling stage 110. After all 101 is removed, or while removing the powder material 101 from the modeling stage 110, the exposed three-dimensional modeled body 1 or fixed protrusion 30 is sequentially taken out from the modeling stage 110.

  Here, in the present embodiment, as a method of removing the powder material 101 on the modeling stage 110, the case of discharging through the powder discharge port provided in the modeling stage 110 has been described, but the present invention is limited to this. Instead, for example, the powder material 101 may be blown off by wind pressure or removed by sound wave vibration.

  7C and 7D, for convenience of illustration, a combined body 30-1 constituting the fixed protrusion 30 is formed on each powder material layer in two layers 11-3 to 11-4. The cross-sectional shape of each layer of ˜30-E is shown to be a semicircular shape surrounded by arcs and strings. However, in actuality, the cross-sectional shapes of the combined bodies 30-1 to 30-E in each layer are rectangles whose two opposite sides are along the thickness direction (up and down direction in the drawing) of the powder material layer. For example, when the powder material layer is 0.1 mm and the diameter of the fixed protrusion 30 is 10 mm, the fixed protrusion 30 is formed of 100 powder material layers. At this time, by sequentially increasing or decreasing the cross-sectional width of each combined body, the arc-shaped (or curved) cross-section fixing protrusion 30 formed of a plurality of rectangular layers is formed.

  In FIG. 7C, the length direction of the fixing protrusion 30 is parallel to the surface of the base portion 20 (upper surface in the drawing) in the space above the formation region of the base portion 20 where the three-dimensional structure 10 is not formed. As described above, the case where the fixing protrusion 30 is formed in a horizontal state is shown. Here, it is preferable that a powder material layer for one layer which is not bonded is interposed between the fixing protrusion 30 and the base portion 20 formed of the powder material layer 11-2. Moreover, although the figure corresponding to the case where the diameter D0 of the fixed protrusion 30 is set to the protrusion height H1 or less of the three-dimensional model | molding part 10 (H1> = D0) was shown, this invention is not limited to this. . When the length L0 of the fixed protrusion 30 is set to be equal to or less than the protrusion height H1 of the three-dimensional structure 10 (H1 ≧ L0), the space above the formation region of the base portion 20 where the three-dimensional structure 10 is not formed In addition, the fixing protrusion 30 may be formed in an upright state so that the length direction of the fixing protrusion 30 is perpendicular to the surface of the base portion 20 (upper surface in the drawing).

(Verification of effects)
Next, the effects of the above-described three-dimensional structure and the three-dimensional structure method will be verified by showing a comparative example. Here, first, a three-dimensional modeling method as a comparative example is shown, and after verifying the problem, the features and effects of the three-dimensional modeling method according to the present embodiment will be described.

  FIG. 8 is a schematic diagram illustrating a configuration and an assembling method of a three-dimensional structure that is a comparative example. FIG. 8A is a schematic perspective view illustrating a method for assembling a three-dimensional structure to be a comparative example, and FIG. 8B is a schematic perspective view illustrating an assembled state of the three-dimensional structure to be a comparative example. FIG. 8C shows the VIIIC-VIIIC line in the assembled state shown in FIG. 8B (in this specification, as a symbol corresponding to the Roman numeral “8” shown in FIG. 8B). 3 is a schematic cross-sectional view showing a cross-sectional structure taken along line “VIII”. FIG. 9 is a schematic process diagram showing a three-dimensional modeling method as a comparative example. Here, in order to simplify the description, the same components as those in the present embodiment will be described with the same reference numerals.

  The three-dimensional structure as a comparative example is displayed on a vertical surface such as a wall surface in the state where the three-dimensional structure body is framed, as in the above-described embodiment (see FIGS. 1A and 1B). Or it has the structure posted. Here, in the comparative example, as shown in FIGS. 8A to 8C, the three-dimensional structure main body 1p is added to the three-dimensional structure 10 and the base 20 having the same shape as the present embodiment, A fixed projection 30 serving as a plurality of positioning pins is provided at an arbitrary position on the back side of the base portion 20 so as to protrude. The base plate 40 has a rectangular flat plate structure as in the above-described embodiment, and a plurality of fittings are provided at positions corresponding to the fixed protrusions 30 provided on the back surface side of the base portion 20 on the upper surface side. A hole 41 is provided. Then, as shown in FIGS. 8 (b) and 8 (c), the fixed projection 30 is fitted in association with the fitting hole 41 on the upper surface side of the base plate 40. It is positioned and fixed at a predetermined position on the upper surface of 40 and assembled.

  When the powder lamination method equivalent to this embodiment mentioned above is applied to the formation method (three-dimensional modeling method) of the three-dimensional structure main body 1p used in the comparative example having such a configuration, for example, FIG. First, after forming the powder material layer 11-1 for one layer on the upper surface of the modeling stage 110, based on the hierarchical data of the three-dimensional structure main body 1p generated based on the three-dimensional CAD data. Then, the powder material layer 11-1 is selectively cured to form a combined body 30-1 corresponding to the hierarchical shape of the first layer of the fixing protrusion 30.

  Then, by repeating the step of forming a bonded body in such a powder material layer for one layer, as shown in FIG. 9 (a), the fixing protrusion 30 is formed in the powder material layers 11-1 to 11-3. The fixed protrusions 30 composed of the combined bodies 30-1 to 30-E from the first layer to the uppermost layer (the third layer in the figure) are integrally laminated.

  Next, in the same manner as in the above-described embodiment, a powder material layer for one layer is formed on the upper surface of the powder material layer 11-3 on which the fixing protrusion 30 is formed, and then a combined body based on the hierarchical data of the base portion 20 9B is repeated, the base portion 20 joined to the fixing protrusion 30 is integrally laminated in the powder material layers 11-4 to 11-5, as shown in FIG. 9B. . Further, after forming a powder material layer for one layer on the upper surface of the powder material layer on which the base portion 20 is formed, by repeating the step of forming a combined body based on the hierarchical data of the three-dimensional structure 10, FIG. As shown in (c), in the powder material layers 11-6 to 11-Ep (uppermost layer), the three-dimensional structure 10 joined to the base portion 20 is integrally laminated.

  That is, by such a series of modeling methods, as shown in FIG. 9C, three-dimensional modeling is performed on the surface side of the base portion 20 in the powder material layers 11-1 to 11-Ep laminated on the modeling stage. The three-dimensional structure main body 1p having a configuration in which the portion 10 is integrally provided and the fixed protrusion 30 is integrally provided on the back surface side is formed.

  In such a three-dimensional structure and a three-dimensional structure method as a comparative example, the three-dimensional structure body 1p is integrally provided with the three-dimensional structure 10 on the front surface side of the base portion 20, and on the back surface side. The fixing protrusion 30 is integrally provided. Therefore, as many powder material layers as are laminated on the modeling stage 110 are required to form the three-dimensional modeling part 10, the base part 20, and the fixed protrusions 30, respectively. Here, in the additive manufacturing method including the powder lamination method described above, generally, the more material layers are stacked on the modeling stage, that is, the higher the modeling height, the longer the time required for modeling. The production efficiency was poor (low).

  Further, in the case of a method in which the three-dimensional structure main body 1p is formed in the laminated material layer as in the powder lamination method described above, powder other than the region or space in which the three-dimensional structure main body 1p is formed. The material is not substantially used for modeling the three-dimensional structure main body 1p, and the utilization efficiency of the material is low, so that the production efficiency is poor (low).

  On the other hand, in this embodiment, as shown in FIGS. 2, 6, and 7, the three-dimensional structure main body 1 including the three-dimensional structure 10 and the base 20 and the fixed protrusion 30 are separated. It is configured as a part. As a result, when the three-dimensional structure main body 1 is formed, the fixed protrusions 30 can be arranged in an arbitrary region or space, and can be laminated at the same time. The modeling height (H11) can be set lower by the modeling height of the fixed protrusion 30 (H0> H11) than in the comparative example (H0; see FIG. 9C). Therefore, the number of stacks can be reduced to shorten the modeling time, and the production efficiency can be improved.

  Further, in this case, the fixed protrusion 30 configured as a separate part is a region or space in which the three-dimensional structure 10 is not formed in the region or space above the base portion 20 in the material layer laminated on the modeling stage 110. They are stacked in a so-called dead space. Thereby, the utilization efficiency of the powder material (laminated material) used when performing a series of three-dimensional modeling methods can be improved, and production efficiency can be improved.

<Second Embodiment>
Next, a description will be given of a second embodiment of a three-dimensional modeling method according to the present invention.
In 1st Embodiment mentioned above, the case where the several fixed protrusion 30 which has the column shape of the same dimension was applied as a structure for positioning and fixing the three-dimensional structure main body 1 to the upper surface of the baseplate 40 was demonstrated. In 2nd Embodiment, according to the weight balance in the three-dimensional structure main body 1, it has the structure which applied the some fixed protrusion from which a dimension differs.

  FIG. 10 is a schematic diagram illustrating a method of assembling the three-dimensional structure main body according to the second embodiment to the base plate. FIG. 10A is a schematic perspective view showing a method of assembling the three-dimensional structure main body to the base plate according to the present embodiment, and FIG. 10B shows the state of assembling the three-dimensional structure main body to the base plate. FIG. 10C is a schematic perspective view showing the XC-XC line in the assembled state shown in FIG. 10B (in this specification, the Roman numeral “10” shown in FIG. 10B). It is a schematic sectional view showing a sectional structure along “X” as a corresponding symbol for convenience. FIG. 11 is a schematic process diagram illustrating a formation state of the three-dimensional structure main body and the fixed protrusion according to the present embodiment. FIG. 12 is a conceptual diagram for explaining the operational effects of the three-dimensional structure according to the present embodiment. Here, components equivalent to those in the first embodiment described above will be described with the same reference numerals.

  As shown in FIGS. 10A to 10C, the three-dimensional structure according to the present embodiment is similar to the first embodiment described above, the three-dimensional structure main body 1, the fixed protrusion 30, and the base plate. 40 and a frame 50. Since the frame 50 is the same as that of the first embodiment described above, the description thereof is omitted.

  The three-dimensional structure main body 1 is provided with the three-dimensional structure 10 protruding from the surface side (upper surface side of the drawing) of the base portion 20, and has the same appearance as that of the first embodiment described above. In the present embodiment, as shown in FIGS. 10A and 10C, a plurality of fitting holes 21 a and 21 b are provided on the back surface side of the base portion 20. The fitting holes 21a and 21b have, for example, a columnar counterbore shape like the first embodiment described above, and the opening diameter Da of the fitting hole 21a and the opening diameter Db of the fitting hole 21b are different. Is set to In the present embodiment, the opening diameter Da of the fitting hole 21a is set to be larger than the opening diameter Db of the fitting hole 21b (Da> Db).

  For example, as shown in FIGS. 10 (a) to 10 (c), the base plate 40 is fitted at positions corresponding to the fitting holes 21a and 21b provided on the back surface side of the base portion 20 on the upper surface side. Holes 41a and 41b are provided.

  As shown in FIGS. 10A to 10C, the fixing protrusion 30 a includes both a fitting hole 21 a provided on the back surface side of the base portion 20 and a fitting hole 41 a provided on the upper surface side of the base plate 40. It has a cylindrical shape that fits into The fixed protrusion 30 b has a cylindrical shape that fits into both the fitting hole 21 b provided on the back surface side of the base portion 20 and the fitting hole 41 b provided on the upper surface side of the base plate 40. That is, the fixed protrusion 30a is set to a diameter D0a corresponding to the opening diameter Da of the fitting hole 21a, and the fixed protrusion 30b is set to a diameter D0b corresponding to the opening diameter Db of the fitting hole 21b. The diameter D0a of 30a is set slightly shorter than the opening diameter Da of the fitting hole 21a and longer than the diameter D0b of the fixing protrusion 30b, and the diameter D0b of the fixing protrusion 30b is slightly smaller than the opening diameter Db of the fitting hole 21b. short. Further, the volumes (in other words, weight) of the fixing protrusions 30a and 30b are set to be different. Here, also in the present embodiment, as shown in FIGS. 10A and 10C, at least one of the diameters D0a and D0b or the length L0 of the fixed protrusions 30a and 30b is at least three-dimensionally shaped. The protrusion height (height up to the highest point) of the three-dimensional structure 10 from the surface (upper surface in the drawing) of the base portion 20 of the object body 1 is set to be equal to or lower than H1. That is, a plurality of (all) fixing protrusions 30a in a space on the formation region of the base portion 20 that is not more than the protruding height H1 of the three-dimensional structure 10 and in which the three-dimensional structure 10 is not formed. The diameters D0a and D0b and the length L0 of the fixing protrusions 30a and 30b and the arrangement are set so that 30b can be accommodated.

  Then, these fixing protrusions 30a and 30b are fitted in association with both the fitting holes 21a and 21b on the lower surface side of the base portion 20 and the fitting holes 41a and 41b on the upper surface side of the base plate 40, respectively. Thereby, the three-dimensional structure main body 1 is positioned and fixed at a predetermined position on the upper surface of the base plate 40 and assembled.

  The three-dimensional structure having the above-described configuration is formed by executing manufacturing steps and processing steps equivalent to those of the above-described first embodiment. In particular, in the present embodiment, the three-dimensional structure 10 and the fixed protrusions 30a and 30b are simultaneously stacked and formed in the following manner in the molded article main body / fixed protrusion stacked modeling step (S103) described above.

  That is, for example, as shown in FIG. 11, after the base portion 20 is formed on the modeling stage 110, the powder material layers 11-3 to 11-on the powder material layer 11-2 on which the base portion 20 is formed. During E, the process of forming a combined body based on the hierarchical data of the three-dimensional modeling unit 10 and a combined body based on the hierarchical data of the fixed protrusions 30a and 30b is repeated. Thereby, the combined bodies 10-1 to 10-E configuring the three-dimensional modeling unit 10 and the combined bodies 30-1 to 30-E configuring the fixed protrusions 30a and 30b are sequentially stacked to form the modeling stage 110. A three-dimensional structure main body 1 composed of the three-dimensional structure 10 and the base 20 is integrally formed in the powder material 101 laminated thereon, and is substantially independent of the three-dimensional structure main body 1. The fixing protrusions 30a and 30b are formed at the same time. Here, the fixed protrusions 30a and 30b have at least one of the diameters D0a and D0b or the length L0 of the total thickness of the powder material layers 11-3 to 11-E formed on the base portion 20, That is, since the height is set to be equal to or less than the protrusion height H1 of the three-dimensional modeled portion 10, the fixed protrusions 30a and 30b are stacked and formed in a state of being disposed in a space above the formation region of the base portion 20.

  According to such a three-dimensional structure and a three-dimensional structure method according to this embodiment, the effects of shortening the modeling time and improving the production efficiency based on the effective use of the laminated material shown in the first embodiment described above. In addition to the effects, it has the following effects.

  That is, for example, as shown as a comparative example in FIG. 8, in the three-dimensional structure main body 1 provided with the three-dimensional structure 10 protruding from the surface side of the base portion 20, the three-dimensional structure portion 10 with respect to the surface of the base portion 20. When the amount of protrusion and the arrangement are not uniform and the weight balance is not uniform, as shown in FIG. 1, when it is incorporated into a frame 50 (framed) and displayed on a vertical surface such as a wall surface, the figure is offset due to the deviation of the center of gravity. As shown in FIG. 12 (a), the upper side or the lower side of the frame 50 cannot be kept horizontal (the horizontal direction in the drawing), and there is a possibility that an inclination is caused with the suspension point Pf as a fulcrum. Here, the suspension point Pf corresponds to the suspension portion 54 provided on the back surface of the frame 50 shown in FIG.

  Therefore, in the present embodiment, the back surface side of the base portion 20 is changed according to the protrusion amount and arrangement of the three-dimensional structure 10 with respect to the surface of the base portion 20 so that the weight balance of the three-dimensional structure main body 1 is uniform. The diameter D0a (in other words, the weight) of the fixed protrusion 30a that fits into the fitting hole 21a is set larger than the diameter D0b of the fixed protrusion 30b (D0a> D0b in FIG. 12A). Alternatively, the number of fixed protrusions 30a (in other words, the total weight) is set to be larger than that of the fixed protrusions 30b. Furthermore, the arrangement position of the fixed protrusion 30a with respect to the fixed protrusion 30b is determined.

  That is, as shown in FIG. 12B, when the three-dimensional structure main body 1 is framed and suspended on a vertical surface, the reference line CL is perpendicular to the upper side of the frame 50 and passes through the suspension point Pf. , The left side and the right side of the reference line CL so as to cancel or reduce the deviation of the center of gravity by the three-dimensional modeling unit 10 provided in the right side area (move to or near the reference line CL). The diameters D0a and D0b, the length L0, the number of the fixing protrusions 30a and 30b provided in the region, and the arrangement positions thereof are appropriately set. At this time, the diameters D0a and D0b, the length L0, and the number of the fixing protrusions 30a and 30b are the three-dimensional shapes on the formation region of the base portion 20 in the layered modeling process of the three-dimensional modeled body 1 as described above. It is set so that all the fixed protrusions 30a and 30b are accommodated in a space that is the projection height H1 or less of the modeling unit 10 and in which the three-dimensional modeling unit 10 is not formed. Accordingly, as shown in FIG. 12B, when the three-dimensional structure main body 1 is framed and suspended on the vertical surface, the weight balance is maintained on the left and right sides of the reference line CL passing through the suspension point Pf. It is made uniform and the upper side or the lower side of the frame 50 is kept substantially horizontal, and can be displayed or displayed without tilting.

  In each of the above-described embodiments, the relief-shaped three-dimensional structure body 1 is positioned and fixed to the base plate 40 by the fixing protrusions 30 and then assembled into the frame 50 (framed), and the vertical surface of the wall surface or the like. Although the case where it hung on the surface and displayed or displayed was demonstrated, this invention is not limited to this. That is, for example, a self-supporting three-dimensional structure (the three-dimensional structure body 1 assembled to the base plate 40) is independently displayed or displayed on a horizontal installation surface such as a horizontal base or a floor surface. Moreover, the structure and modeling method equivalent to this embodiment can be used. Even in this case, the three-dimensional structure main body and the fixed protrusion can be simultaneously formed while shortening the modeling time and effectively using the laminated material, and the production efficiency can be improved.

  Moreover, in each embodiment mentioned above, by repeating the process of discharging and hardening a binder with respect to the powder material of each layer based on the hierarchical data of the three-dimensional structure, the three-dimensional structure body 1 and the fixed protrusion Although the powder lamination method which forms 30, 30a, and 30b simultaneously was demonstrated, this invention is not limited to this. That is, for example, using a photocurable resin powder as a powder material, selectively curing the photocurable resin powder by irradiating a laser beam having a predetermined wavelength to a region corresponding to the hierarchical data of the three-dimensional structure. The process of making it repeat may be carried out, and the three-dimensional structure main body 1 and the fixed protrusions 30, 30a, 30b may be laminated and formed.

  Furthermore, in the above-described embodiment, the case where the three-dimensional structure main body 1 and the fixed protrusions 30, 30a, and 30b are simultaneously formed by using the powder lamination method as the additive manufacturing method has been described, but the present invention is limited to this. However, various types of layered modeling methods such as the optical modeling method and the thin plate lamination method described above may be applied.

As mentioned above, although some embodiment of this invention was described, this invention is not limited to embodiment mentioned above, It includes the invention described in the claim, and its equivalent range.
Hereinafter, the invention described in the scope of claims of the present application will be appended.

(Appendix)
The invention described in claim 1
Curing the base forming region of the uncured base layer material layer to form the base,
A three-dimensional modeled part is formed in the three-dimensional modeled part forming region on the one surface side of the base by repeatedly laminating an uncured three-dimensional modeled part layered material layer on the base layered material layer. And forming a three-dimensional modeled object having the base part and the three-dimensional modeled part integrally, and forming a fixed projection fixed to the bottom surface of the base part in addition to the three-dimensional modeled part forming region. This is a three-dimensional modeling method.

The invention described in claim 2
Before the formation of the three-dimensional structure, based on the three-dimensional data of the three-dimensional structure, the formation position of the fixed protrusion with respect to the three-dimensional structure is set.
The three-dimensional data according to claim 1, wherein the three-dimensional structure main body and the fixed projection are generated in a plurality of layers in a plane parallel to a predetermined reference plane, and hierarchical data of each layer is generated. It is a modeling method.

The invention according to claim 3
A plurality of the fixing protrusions are provided, and the shape, size, and formation position of the fixing protrusions are set such that the plurality of the fixing protrusions are accommodated in a region other than the three-dimensional modeling portion forming region in the three-dimensional modeling portion laminated material layer. It is set, It is the three-dimensional modeling method of Claim 1 or 2 characterized by the above-mentioned.

The invention according to claim 4
Modeling the base so that a first fitting hole fitted to one end of the fixed protrusion is provided on the bottom surface;
4. The three-dimensional modeling method according to claim 1, wherein the fixing protrusion is formed so that the other end is fitted to a base material provided with a second fitting hole. 5.

The invention described in claim 5
The three-dimensional modeling method according to claim 3, wherein the plurality of fixing protrusions are set so that at least the dimensions are different.

The invention described in claim 6
3D modeling part,
The base part provided with the three-dimensional modeled part on one side and the first fitting hole on the other side;
A base material provided with a second fitting hole on one side;
It fits in both the first fitting hole and the second fitting hole, and positions and fixes the three-dimensional structure main body having the three-dimensional structure and the base on the one surface side of the base material. A fixing protrusion,
It is a three-dimensional structure characterized by having.

The invention described in claim 7
The three-dimensional structure according to claim 6, wherein a plurality of the fixing protrusions are provided.

The invention according to claim 8 provides:
The three-dimensional structure according to claim 7, wherein the plurality of fixing protrusions are set so that at least the dimensions are different.

The invention according to claim 9 is:
9. The three-dimensional structure main body and the base material, which are positioned and fixed by the fixing protrusions, are suspended from a vertical surface in a framed state. It is a three-dimensional structure.

DESCRIPTION OF SYMBOLS 1 3D modeling main body 10 Three-dimensional modeling part 20 Base part 21 Fitting hole (1st fitting hole)
30 Fixed projection 40 Base plate (base material)
41 Fitting hole (second fitting hole)
50 Frame 51 Image frame 51 w Opening 51 h Storage 52 Back plate 101 Powder material 110 Modeling stage 120 Binder discharge part 121 Binder

Claims (5)

Curing the base forming region of the uncured base layer material layer to form the base,
A three-dimensional modeled part is formed in the three-dimensional modeled part forming region on the one surface side of the base by repeatedly laminating an uncured three-dimensional modeled part layered material layer on the base layered material layer. And forming a three-dimensional modeled object having the base part and the three-dimensional modeled part integrally, and forming a fixed projection fixed to the bottom surface of the base part in addition to the three-dimensional modeled part forming region. 3D modeling method. Before the formation of the three-dimensional structure, based on the three-dimensional data of the three-dimensional structure, the formation position of the fixed protrusion with respect to the three-dimensional structure is set.
The three-dimensional data according to claim 1, wherein the three-dimensional structure main body and the fixed projection are generated in a plurality of layers in a plane parallel to a predetermined reference plane, and hierarchical data of each layer is generated. Modeling method.   A plurality of the fixing protrusions are provided, and the shape, size, and formation position of the fixing protrusions are set such that the plurality of the fixing protrusions are accommodated in a region other than the three-dimensional modeling portion forming region in the three-dimensional modeling portion laminated material layer. The three-dimensional modeling method according to claim 1, wherein the three-dimensional modeling method is set. Modeling the base so that a first fitting hole fitted to one end of the fixed protrusion is provided on the bottom surface;
The three-dimensional modeling method according to any one of claims 1 to 3, wherein the fixing protrusion is formed so that the other end is fitted to a base material provided with a second fitting hole.   The three-dimensional modeling method according to claim 3, wherein the plurality of fixing protrusions are set so that at least the dimensions are different.

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