JP2619545B2 - 3D model manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for producing a three-dimensional model such as a mold prototype, a model for an electric discharge machining electrode, and a design evaluation model of an industrial product using a photocurable fluid material. .

[Conventional technology]

A photocurable fluid material is accommodated in a container, and the irradiated portion is moved horizontally while performing light energy concentration irradiation on the material, and a solidified layer of a thin photocurable material corresponding to a predetermined cross-sectional shape of a modeling object. Is formed, and then a new photocurable fluid material layer is added to the surface of the solidified layer, and light energy concentration irradiation is performed again to repeat the operation of forming a solidified layer having a continuous sectional shape on the solidified layer, Japanese Patent Publication No. Sho 63-40650 proposes an optical molding method in which solidified layers having a predetermined sectional shape are sequentially laminated to form a three-dimensional object having a desired shape.

According to the method described in the publication, a three-dimensional model having a complicated shape can be manufactured using a photocurable resin liquid such as a modified polyurethane methacrylate, oligoester acrylate, or epoxy acrylate.

Usually, when a three-dimensional model is manufactured by this method, after forming a solidified layer having one cross-sectional shape, an uncured photocurable material having a predetermined thickness is formed on the solidified layer in order to form a solidified layer having the next cross-sectional shape. It is necessary to supply a flowing substance. In this operation, in the method described in the above publication, a desired amount of the photocurable fluid substance is additionally injected into the container, and the height of the upper surface of the photocurable fluid substance (hereinafter referred to as “liquid level” for convenience) in the container is increased by a predetermined amount. The solidification layer is raised so as to be immersed in the photocurable fluid material to a predetermined depth. In this three-dimensional model manufacturing method, since the thickness of the solidified layer formed at one time is extremely thin, about 0.1 mm to 1 mm, the depth at which the solidified layer is immersed is correspondingly small.

However, the upper surface of the solidified layer of the work is completely cured by light irradiation and is in a dry state, so that it does not fit well with the photocurable fluid material. However, due to the surface tension, a curved free surface of the surrounding photocurable fluid material is formed, and there has been a problem that introduction of the peripheral photocurable fluid material to the upper surface of the solidified layer is prevented.

Therefore, when a three-dimensional model is actually manufactured using the above method, a method is used in which a vertically movable base is immersed in a container and the solidified layer is laminated on the base.
After the two solidified layers are formed, the substrate is once lowered greatly to about 10 to 50 mm, and the model being manufactured (hereinafter referred to as “work”) is submerged in a photocurable substance, and the upper surface of the solidified layer of the work and the surrounding light After setting a sufficiently large height difference between the liquid surface of the curable substance and injecting the surrounding photocurable substance into the upper surface of the solidified layer,
The operation of raising the base again to obtain a predetermined immersion depth is performed.

[Problems to be solved by the invention]

As described above, it is possible to introduce a photocurable substance onto the solidified layer of the work by a method in which the work is once settled to a required amount or more and then raised to a predetermined depth again. There are the following problems.

That is, the solidified layer upper surface of the work is in a dry state after being cured as described above, and has poor compatibility with the photocurable substance, so that even if the work is settled and the introduction of the photocurable substance from the surroundings is started. If the workpiece is lifted before the upper surface of the solidified layer is completely covered with the photocurable substance, a free surface due to surface tension is formed near the center of the upper surface of the solidified layer, and the photocurable substance is formed at the center of the upper surface of the solidified layer. May not be introduced.

For this reason, in the above-described method, it is necessary to allow time for the photocurable substance flowing from the surroundings to reach the central portion after the work is once settled and before the work is raised again. In general, since the photocurable substance used in the production method of this three-dimensional model has a relatively high viscosity, it takes time to introduce the photocurable substance, and it takes a long time especially when the cross-sectional shape is large. . In addition, since it is necessary to raise the base again once and then raise it again and position it at a predetermined position with high precision, it takes a considerable amount of time to position the base, and when adding the introduction time of the above photocurable substance, After the formation of one solidified layer, a considerable time is required until the formation of the next solidified layer is started. In this solid model manufacturing method, since a solid model is manufactured by laminating a large number of extremely thin solidified layers (about 0.1 to 1 mm), the above solidified layer forming operation may be repeated 1000 times or more when a single model is manufactured. However, as a whole, the time required for the above operation becomes very long, and it takes a long time to produce a three-dimensional model.

An object of the present invention is to provide a method for efficiently supplying a photocurable substance to the upper surface of a solidified layer of a work in a short time and to reduce the time required for manufacturing a three-dimensional model in order to solve the above problem.

[Means for solving the problem]

According to the present invention, when manufacturing a three-dimensional model by the above-described method using a photocurable fluid, the base on which the work is placed does not perform the above-described up and down operation for introducing the photocurable fluid, but a certain amount of lowering. It is characterized in that only the operation is performed, and the photocurable substance in the container is supplied to the upper surface of the work solidified layer using another means.

That is, according to the present invention, when performing the lowering operation of lowering the base by a fixed amount, before the lowering operation or during the lowering operation,
Or a three-dimensional model manufacturing method characterized by raising the liquid level of the photocurable fluid material once by a predetermined amount using liquid level height adjusting means after the lowering operation, and then lowering the liquid level to the liquid level before the raising. Is provided.

Further, according to the present invention, when performing the lowering operation of lowering the base by a predetermined amount, before the lowering operation, during the lowering operation, or after the lowering operation, the container containing the photocurable fluid substance is temporarily removed by a predetermined amount. A three-dimensional model manufacturing method characterized in that the three-dimensional model is raised only after that, and then lowered to a position before rising.

Further, according to the present invention, before lowering the substrate by a certain amount, a photo-curable fluid substance is applied to the upper surface of the solidified layer, and then the substrate is lowered by a certain amount and the surrounding photo-curable fluid is applied to the upper surface of the solidified layer. There is provided a method for producing a three-dimensional model, which comprises introducing a substance. Similarly, according to the present invention, when performing the lowering operation of lowering the base by a fixed amount, after the lowering operation, the screen means is kept on the solidified layer and the surrounding photocurable material surface while maintaining a predetermined gap with the solidified layer. A three-dimensional model manufacturing method is provided, which is characterized by being developed.

Further, according to the present invention, when performing the lowering operation of lowering the base by a fixed amount, after the lowering operation, the mesh screen is placed on the solidified layer and in the surrounding photocurable material while maintaining a predetermined gap with the solidified layer. A three-dimensional model manufacturing method is provided wherein the mesh screen is unfolded and the surface of the mesh screen is swept using a sweeping means.

Further, according to the present invention, when performing the lowering operation of lowering the base by a predetermined amount, before the lowering operation, during the lowering operation, or after the lowering operation, the photocurable fluid substance in the container using pump means is removed. A three-dimensional model manufacturing method is provided, wherein the three-dimensional model is provided on the solidified layer.

(Operation)

According to the method of raising the liquid level in the container by using the liquid level height adjusting means when lowering the substrate by a certain amount, the upper surface of the solidified layer and the photocurable fluid flow without unnecessary lowering operation of the substrate. A large height difference can be provided with the substance liquid level,
The surrounding photocurable fluid material quickly flows into the upper surface of the solidified layer. The same effect can be obtained by raising the whole container with respect to the base instead of raising the liquid level in the container. According to the method of applying a photocurable fluid substance to the upper surface of the solidified layer before lowering the substrate, and then lowering the substrate, the surface of the solidified layer becomes wet with the resin liquid applied when the substrate is lowered. In addition, since the affinity between the resin liquid and the surface of the solidified layer is improved, a free surface of the resin liquid is not formed due to surface tension when the substrate is lowered, and the surrounding photocurable fluid material quickly flows into the upper surface of the solidified layer.

Further, according to the method of spreading the screen means on the upper surface of the solidified layer, the free surface formed by the surface tension of the photocurable fluid material moves together with the screen means, and the upper surface of the solidified layer is covered with the photocurable fluid material.

A similar effect can be obtained by developing a mesh screen in place of the above screen means and sweeping the mesh screen using the sweep means.

Furthermore, according to the method of supplying the photocurable fluid substance in the container onto the solidified layer using the pump means, the material is supplied directly to the upper surface of the solidified layer. Can be covered.

In any of the above methods, the base only performs the downward movement of a fixed amount at a time, and the liquid level in the container after the operation is completed is kept constant.

〔Example〕

FIG. 1 shows a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a work, 2 denotes a base on which the work is mounted, and 3 denotes a photocurable fluid material such as a photocurable resin liquid (hereinafter, referred to as a photocurable resin material). "Resin liquid"
4) indicates a container. In this embodiment, the container 4 is provided with a cylinder 7 immersed in the resin liquid and a piston 7a sliding in the cylinder. The lower end of the cylinder 7 is opened into the resin liquid, and the cylinder 7 below the piston 1 Is filled with a resin liquid. Reference numeral 5 denotes a condensing means such as a lens which can move in a horizontal direction, and is used for converging a high-energy light beam 6 such as a laser beam to a desired position on the surface of the resin liquid.

FIG. 1A shows a state immediately after the formation of the solidified layer by one light irradiation. In this state, work 1
Has the same height as the liquid surface of the resin liquid 3. Further, the piston 7a is stopped at a position raised in the cylinder 7. When the light irradiation is completed, the piston 7a descends by a predetermined amount in step (B), and the liquid level of the resin liquid 3 rises by a height ΔH corresponding to the amount of resin liquid removed by the piston 7a.
Flows into the upper surface of the solidified layer to form a resin liquid layer having a thickness ΔH. ΔH is the distance required to quickly introduce the resin liquid to the upper surface of the work solidified layer, and is about 10 to 50 mm or more depending on the cross-sectional area of the molding object. Next, in step (C), the base 2 on which the work 1 is placed is lowered by a predetermined amount Δt necessary for forming the next solidified layer. Δt is a thickness corresponding to one solidified layer, and is about 0.1 to 1 mm. Thereafter, when the piston 7a returns to the position of the step (A) in the step (D), the liquid level falls by ΔH, so that a resin liquid layer having a thickness of Δt is formed on the upper surface of the solidified layer. Thus, the preparation for starting the next light irradiation is completed.

In the present embodiment, the liquid level is raised and lowered by the operation of the piston 7a, and after raising the liquid level, the operation of returning to the liquid level before the rise is performed by controlling the position of the piston 7a by a known method. By doing so, it can be performed quickly and accurately.
Further, since the resin liquid 3 flows out and in from the cylinder 7a in the resin liquid, the liquid surface is not disturbed, and there is an advantage that light irradiation can be resumed immediately after the liquid surface returns to the state of step (D).

In this embodiment, the liquid level raising operation (step (B)) is performed prior to the lowering operation (step (C)) of the substrate 2, but the liquid level raising is performed simultaneously with the lowering operation of the substrate 2 or after the lowering operation is completed. You may do it. Further, the cylinder 7 and the piston 7a may be provided outside the container 4 and communicate with the resin liquid in the container by piping or the like.

Further, as shown in FIG. 2, instead of the cylinder 7 and the piston 7a, an expansion chamber 8 is formed of a material that can expand and contract in liquid.
The same effect can be obtained by expanding and contracting the expansion chamber 8 by injecting and removing a pressure fluid from the outside into the expansion chamber 8.

FIG. 3 shows an embodiment in which the liquid surface is moved up and down by moving the whole container 4 up and down without using a cylinder, a piston or the like.

In this embodiment, after the formation of the solidified layer of the work 1 is completed (Step (A)), the container 4 is raised by ΔH while the substrate 2 is fixed (Step (B)), and then the substrate 2 is lowered by Δt (Step (A)). (C)) Thereafter, the container 4 is lowered to the original position (Step (D)), whereby a resin liquid layer having a thickness Δt is finally formed on the solidified layer. In this embodiment, the height of the liquid surface with respect to the work 1 is changed by the operation of reciprocating the container 4 by the distance ΔH, so that the time required for raising and lowering the liquid level in the container 4 becomes unnecessary, and the operation time can be shortened. it can. The movement of the container 4 may be performed simultaneously with the lowering of the base 2 or after the lowering is completed, as in the embodiment of FIGS. 1 and 2.

Although it does not constitute the present invention, FIG. 4 shows a reference example of an optical shaping method using a sweeping means comprising a flat scraper 9. In the present embodiment, in this embodiment, after the formation of the solidified layer of the work 1 is completed (step (A)), first, the base 2 and Δt
(Step (B)). In this state, the free surface 3a of the resin liquid 3 is formed on the outer edge of the solidified layer of the work 1, and the resin liquid is not introduced into the upper surface of the solidified layer. Scraper 9
Is held in a state in which the lower end thereof is in contact with the liquid surface of the resin liquid 3 before the base 2 descends or is slightly immersed in the liquid surface. When the work 1 is lowered, the solidified layer of the work 1 is A minute gap is formed between the upper surface and the scraper 9. Next, in step (C), the scraper 9 is horizontally moved from this state to sweep the surface of the resin liquid and the upper surface of the solidified layer of the work 1. Thereby, the above-mentioned resin liquid free surface moves together with the scraper 9, and a resin liquid layer having a thickness Δt is formed on the upper surface of the solidified layer. (Step (D)) According to this method, the resin liquid can be introduced onto the solidified layer at a speed corresponding to the moving speed of the scraper 9 without moving the liquid surface up and down, so that the resin liquid is quickly introduced. Also, at the time of sweeping, the lower end of the scraper 9 always keeps a constant gap with the upper surface of the solidified layer of the work 1, and the work 1 and the scraper 9 do not contact and damage the solidified layer surface, By configuring the lower end of the scraper 9 with a flexible material such as resin, it is possible to prevent the surface of the solidified layer from being damaged when the work 1 contacts the scraper 9 for some reason.

FIG. 5 shows an embodiment of a method of applying a resin liquid to the upper surface of the solidified layer before lowering the base. In this embodiment,
The resin liquid is applied by sweeping the surface of the solidified layer with a brush 10 using a flexible material such as a resin. In this embodiment, as shown in FIG. 5, the sweep is performed after the solidified layer is formed and before the base is lowered. The brush 10 is attached to the lower end of a flat plate extending perpendicularly to the plane of the drawing, similarly to the scraper 9 in FIG. 4, and the tip of the brush 10 is immersed in the resin liquid 3 so that the brush 10 Move while touching. By sweeping the surface of the solidified layer with the brush 10 containing the resin liquid 3, the surface of the solidified layer is changed from a dry state immediately after the completion of the curing to a wet state covered with a thin film of the resin liquid. Therefore, when the substrate 2 is lowered next time, the free surface of the resin liquid 3 is not formed due to the surface tension, and the liquid is quickly introduced. The same effect can be obtained by performing the sweeping by the brush 10 at the same time as the lowering operation of the base 2 or after the lowering operation is completed.

Next, FIG. 6 shows an embodiment of the method using the screen means.

In the figure, reference numeral 11 denotes a sheet-like screen made of a resin film or a thin mesh, one end 11a is fixed to a container, and the other end is wound around a horizontal rotating shaft 11b in a roll shape. Is in close contact with the surface of the resin liquid 3. In this embodiment, the base 2 is first lowered by Δt after the formation of the solidified layer (step (A)). In this state, the resin liquid 3 does not flow into the upper surface of the solidified layer due to the free surface 3a of the resin liquid 3 formed on the outer edge of the solidified layer. Next, in the step (B), the screen 11 is spread on the entire upper surface of the solidified layer of the work 1 by moving the rotating shaft 11b horizontally while rotating it. The rotating shaft 11b moves while applying appropriate tension to the screen 11 while rotating, for example, along a guide provided on the wall surface of the container 4, and the screen 11 is developed so as to cover the resin liquid 3 and the solidified layer surface of the work 1. Is done. With the movement of the rotating shaft 11b, the free surface 3a of the resin liquid 3 adheres to the lower surface of the screen 11, and moves along the screen 11 by surface tension. Covered with resin liquid (Step C), rotating shaft
When the screen 11 is returned to the original position while being wound by rotating the screen 11b, a resin liquid layer having a thickness of Δt is formed on the solidified layer, and the next light irradiation can be started (step (D)). In the present embodiment, the rotating shaft 11b is moved. Conversely, as shown in FIG. 7, the position of the rotating shaft 11b is fixed, and the screen 11 is moved by moving the other end 11a of the screen 11 in the horizontal direction. The same effect can be obtained by expanding. In this case, the screen is wound by rotating the rotating shaft 11b.

Next, FIG. 8 shows an embodiment of a method using both the mesh screen and the sweep means. This embodiment is effective when the amount of descent Δt of the base 2 can be made relatively large.
After lowering the base 2 in the same manner as in the illustrated embodiment, the mesh screen 12 is developed using the same means. However, in this embodiment, a relatively coarse mesh screen is used as the mesh screen 12 and is developed at a position slightly below the liquid surface of the resin liquid 3 (step (A)). Next, using the same scraper 9 as in the reference example in FIG. 4, the resin liquid 3 is introduced onto the upper surface of the solidified layer by sweeping the mesh screen 11 (steps (B) and (C)). 11 and the scraper 9 are returned to their original positions (step (C)).
In this embodiment, the mesh screen 11 is mainly used for preventing the work 1 from contacting the surface of the solidified layer and the scraper 9. In the present embodiment, the mesh screen 11 is provided between the scraper 9 and the work 1 to protect the surface of the solidified layer, so that the scraper 9 does not come into contact with the surface of the solidified layer. There are advantages that can be set.

Next, FIG. 9 shows an embodiment of the method using the pump means.

In this embodiment, the resin liquid 3 in the container 4 is pumped out by using an appropriate type of pump 16 and supplied from the nozzle 13 to the upper surface of the solidified layer of the work 1 in a shower shape. Any type of pump 16 can be used, including a positive displacement pump and a centrifugal pump. The supply of the resin liquid from the shower nozzle 13 may be performed at any time before the lowering of the base 2 is started, during the lowering operation, or after the lowering is completed. Further, if a plurality of nozzles are fixed to the wall surface of the container 4 so as to surround the work 1 and the resin liquid 3 is jetted toward the upper surface of the solidified layer of the work 1, the moving path of the light collector for light irradiation Can be avoided. According to this method, a large amount of resin liquid can be supplied to the upper surface of the solidified layer in a short time, and the liquid level in the container is always kept constant. The effect of time reduction is extremely large. Further, as shown in FIG. 10, a pipe 14 provided with a plurality of nozzles 13 is movably arranged on rails 15 installed on both sides of the container 4, and is moved along the upper surface of the work to form a solidified layer portion of the work. If the resin liquid is supplied, the resin liquid can be efficiently supplied with a small number of nozzles.

Instead of providing a plurality of nozzles 13 on the pipe 14 in FIG. 10, a slit extending in the pipe longitudinal direction may be provided on the lower surface of the pipe 14, and the resin liquid may flow down from this slit. In this method, since a large amount of resin liquid is supplied to the upper surface of the solidified layer in a short time, bubbles may be generated on the liquid surface when supplying the resin liquid. Therefore, it is preferable to defoam (suppress) by mixing a surfactant or the like in the solution in advance.

As another embodiment of this method, there is provided a spray nozzle for spraying a resin liquid in a fine mist form instead of the nozzle 13 using the same configuration as that shown in FIG. 10 (not shown).
When a spray nozzle is used, the supply speed of the resin liquid is slightly lower than that of the shower nozzle 13, but since the resin liquid can be sprayed in a fine mist, the liquid surface is not disturbed and an antifoaming agent is not used. No foaming occurs on the liquid surface. In addition, since the resin liquid can be sprayed uniformly on the upper surface of the solidified amount, it is possible to control the amount of the resin liquid supplied per unit area of the upper surface of the solidified layer by adjusting the spray flow rate and the moving speed of the spray nozzle. There are advantages. When the resin liquid is sprayed using the spray nozzle, first, the base 2 is first lowered, and then the required amount of the resin liquid is supplied by spraying on the solidified layer. Then, the next light irradiation can be started in the shortest time.

In the above-described embodiment, the vertical movement of the base 2 and the container 4, the movement of the focusing means 5, and the driving of the piston 7 a, the scraper 9, and the like are performed by a known method using driving means connected to the NC device. It may be performed by automatic control or manually.

〔The invention's effect〕

In the present invention, since the supply of the resin liquid to the upper surface of the solidified layer is performed using another means without performing the vertical movement of the base as described above, the operation of greatly lowering the base and then raising it again as in the related art is required. There is an advantage that it becomes unnecessary and the time required for the operation and positioning of the base is reduced. In addition, since the time required for introducing the resin liquid to the upper surface of the solidified layer is also reduced, the time required for starting the next solidified layer formation after the solidified layer is formed is significantly reduced, together with the reduction of the substrate moving time, A three-dimensional model can be manufactured in a short time.

Further, since the liquid surface of the resin liquid is always at the same height when the solidified layer is formed, it is not necessary to adjust the optical system such as a laser beam.

[Brief description of the drawings]

FIGS. 1 and 2 show an embodiment of a method of supplying a photocurable fluid substance to the upper surface of a solidified layer using liquid level height adjusting means. FIG. 3 shows a photocuring method by moving the whole container up and down. FIG. 4 is a diagram showing an embodiment of a method of supplying a fluidizable substance to the upper surface of a solidified layer, FIG. 4 is a diagram showing a reference example of a method using a sweeping means composed of a scraper, and FIG. FIGS. 6 and 7 show an embodiment of a method of applying a photocurable fluid material to the upper surface of a layer, and FIGS. 6 and 7 show an embodiment of a method of supplying the photocurable fluid material to the upper surface of a solidified layer using a screen means. Fig. 8 shows an embodiment of a method using both a mesh screen and a sweeping means. Figs. 9 and 10 supply a photocurable fluid material to the upper surface of a solidified layer using a pump means. FIG. 4 illustrates an example of a method. DESCRIPTION OF SYMBOLS 1 ... Work, 2 ... Base, 3 ... Photocurable fluid material (resin liquid), 3a ... Free surface, 4 ... Container, 5 ... Condensing means, 6 ... Light beam, 7 ... Cylinder, 7a Piston, 8 Expansion chamber, 9 Scraper, 10 Brush, 11 Screen, 11b Rotary shaft, 12 Mesh screen, 13 Shower nozzle, 14 Pipe , 15 …… rail, 16 …… pump.

Claims (6)

(57) [Claims] 1. A photo-curable fluid material is accommodated in a container, and a vertically movable base is immersed in the material, and the irradiated portion is horizontally moved while irradiating light on the material surface. A solidified layer of a photocurable fluid material having a predetermined cross-sectional shape is formed, and then the substrate is lowered by a predetermined amount with respect to the liquid surface of the photocurable fluid material, and a photocurable fluid material layer having a predetermined thickness is formed on the upper surface of the solidified layer. After forming the light irradiation again, by repeating the operation of forming a solidified layer of the shape of the molding target cross-section continuous to the predetermined cross-section, the solidification layer of a predetermined cross-sectional shape is laminated on the base, respectively, the desired In the three-dimensional model manufacturing method of forming a three-dimensional solid, before or during the lowering operation of the base, or after the lowering operation, using the liquid level height adjustment means, once the photocurable fluid substance in the container The liquid level rises by a predetermined amount And then lowering to a liquid level before the rise. 2. A photocurable fluid material is accommodated in a container, and a vertically movable base is immersed in the material, and the surface of the material is irradiated with light while the irradiated portion is horizontally moved to form a molding object. A solidified layer of a photocurable fluid material having a predetermined cross-sectional shape is formed, and then the substrate is lowered by a predetermined amount with respect to the liquid surface of the photocurable fluid material, and a photocurable fluid material layer having a predetermined thickness is formed on the upper surface of the solidified layer. After forming the light irradiation again, by repeating the operation of forming a solidified layer of the shape of the molding target cross-section continuous to the predetermined cross-section, the solidification layer of a predetermined cross-sectional shape is laminated on the base, respectively, the desired In a three-dimensional model manufacturing method for forming a three-dimensional solid, before or during the lowering operation of the base, or after the lowering operation, the container is temporarily raised by a predetermined amount, and then the container is lowered to the height before the raising. , The liquid A three-dimensional model manufacturing method characterized by obtaining a required amount of lowering of a base with respect to a surface. 3. A photocurable fluid material is accommodated in a container, and a vertically movable base is immersed in the material, and the surface of the material is irradiated with light while the irradiated portion is horizontally moved to form a molding object. Forming a solidified layer of the photocurable fluid material on a predetermined cross section, and then lowering the substrate by a certain amount with respect to the liquid surface of the photocurable fluid material, and forming a photocurable fluid material layer of a predetermined thickness on the upper surface of the solidified layer; After forming the light irradiation again, by repeating the operation of forming a solidified layer of the shape of the molding target cross-section continuous to the predetermined cross-section, the solidification layer of a predetermined cross-sectional shape is laminated on the base, respectively, the desired In the three-dimensional model manufacturing method for forming a three-dimensional solid, before the substrate lowering operation, the photocurable fluid material is applied to the surface of the solidified layer, and then the substrate lowering operation is performed to surround the solidified layer upper surface. Photo-curable fluid material A three-dimensional model manufacturing method characterized by introducing 4. A photo-curable fluid material is accommodated in a container, and a vertically movable base is immersed in the material, and while the surface of the material is irradiated with light, the irradiated portion is horizontally moved to form a molding object. A solidified layer of a photocurable fluid material having a predetermined cross-sectional shape is formed, and then the substrate is lowered by a predetermined amount with respect to the liquid surface of the photocurable fluid material, and a photocurable fluid material layer having a predetermined thickness is formed on the upper surface of the solidified layer. After forming the light irradiation again, by repeating the operation of forming a solidified layer of the shape of the molding target cross-section continuous to the predetermined cross-section, the solidification layer of a predetermined cross-sectional shape is laminated on the base, respectively, the desired In the three-dimensional model manufacturing method for forming a three-dimensional solid, after the base lowering operation, the photocurable fluid material on and around the solidified layer while holding a predetermined gap between the screen means and the solidified layer Before deploying on the surface A method for producing a three-dimensional model, comprising introducing a photocurable fluid material around the solidified layer to the upper surface of the solidified layer. 5. A photo-curable fluid material is accommodated in a container, and a vertically movable base is immersed in the material, and while the surface of the material is irradiated with light, the irradiated portion is horizontally moved to form a molding object. A solidified layer of a photocurable fluid material having a predetermined cross-sectional shape is formed, and then the substrate is lowered by a predetermined amount with respect to the liquid surface of the photocurable fluid material, and a photocurable fluid material layer having a predetermined thickness is formed on the upper surface of the solidified layer. After forming the light irradiation again, by repeating the operation of forming a solidified layer of the shape of the molding target cross-section continuous to the predetermined cross-section, the solidification layer of a predetermined cross-sectional shape is laminated on the base, respectively, the desired In the three-dimensional model manufacturing method for forming a three-dimensional solid, after the base lowering operation, a mesh screen is held on the solidified layer and in the photocurable fluid material while maintaining a predetermined gap between the solidified layer and the mesh screen. Unfold A method for producing a three-dimensional model, wherein the surface of the mesh screen is swept using a sweeping means, and the photocurable fluid material around the solidified layer is introduced onto the upper surface of the solidified layer. 6. A photocurable fluid material is accommodated in a container, and a vertically movable base is immersed in the material, and the surface of the material is irradiated with light while the irradiated portion is horizontally moved to form a molding object. A solidified layer of a photocurable fluid material having a predetermined cross-sectional shape is formed, and then the substrate is lowered by a predetermined amount with respect to the liquid surface of the photocurable fluid material, and a photocurable fluid material layer having a predetermined thickness is formed on the upper surface of the solidified layer. After forming the light irradiation again, by repeating the operation of forming a solidified layer of the shape of the molding target cross-section continuous to the predetermined cross-section, the solidification layer of a predetermined cross-sectional shape is laminated on the base, respectively, the desired In a three-dimensional model manufacturing method for forming a three-dimensional solid, before or during the lowering operation or after the lowering operation of the base, the photocurable fluid substance in the container is supplied onto the solidified layer using a pump unit. Features to 3D model manufacturing method.