JP2024037195A - Three-dimensional modeled object, and method of manufacturing the same - Google Patents

Abstract

To reduce a gap in a main body formed by a three-dimensional modeling apparatus for a three-dimensional modeled object including an insert component, to favorably secure quality and durability of the three-dimensional modeled object.SOLUTION: A three-dimensional modeled object according of the present disclosure comprises: a main body formed by laminating a material using a three-dimensional modeling apparatus; an insert component disposed in the main body so that at least a portion is surrounded with the main body, and a gap filling member. The gap filling member is filled in a gap formed between the insert component in the main body and a plane in a lamination direction, the plane being set perpendicular to the lamination direction between an upper end of the material of the main body in the lamination direction and an upper top portion of the insert component in the lamination direction.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a three-dimensional structure including a main body and an insert component held by the main body, and a method for manufacturing the same.

BACKGROUND ART Conventionally, a manufacturing method is known in which a three-dimensional printer is used to obtain a molded product in which a member of a different material made of a material different from that of a laminate is inserted (see, for example, Patent Document 1). This manufacturing method includes a first lamination process, a cutting process, a dissimilar material member insertion process, a heating process, and a second lamination process. In the first lamination step, the material discharged from the nozzle of the three-dimensional printer is laminated on the receiving member to obtain a laminate. In the cutting step, the laminate obtained in the first lamination step is cut to form a recess at a predetermined position of the laminate. In the dissimilar material member insertion process, a dissimilar material member made of a material different from the material discharged by the discharging means is inserted into the recess formed in the cutting process. In the heating step, the laminate in which the different material members are inserted in the different material member insertion step is heated by the heating means. In the second lamination step, the material discharged from the nozzle is laminated on the laminate heated in the heating step to obtain a molded product in which a different material member is inserted.

JP2020-29066A

However, even with the conventional manufacturing method described above, a gap may be formed between the laminate obtained through the first lamination step and the cutting step and the dissimilar material member. If a gap is formed between the laminate and the dissimilar material member, the material laminated in the second lamination step will not be able to satisfactorily fill the gap, which will affect the quality of the three-dimensional structure as a product. Durability will decrease.

Therefore, the present disclosure provides a method for reducing the gap in the body of a three-dimensional structure formed by a three-dimensional printing apparatus to hold an insert component, thereby ensuring good quality and durability of the three-dimensional structure. Main purpose.

The three-dimensional structure of the present disclosure includes a main body formed by laminating materials using a three-dimensional printing apparatus, and an insert part disposed within the main body so that at least a portion thereof is surrounded by the main body. In the original model, the insert part in the main body, the upper end of the main body in the lamination direction of the materials, and the upper top of the insert part in the lamination direction are defined to be perpendicular to the lamination direction. The structure includes a gap filling member filled in a gap formed between the stacked plane and the stacked plane in the stacking direction.

In the three-dimensional structure of the present disclosure, it is possible to reduce the gap in the main body formed by the three-dimensional printing device so as to hold the insert component, thereby ensuring good quality and durability.

Further, the method for manufacturing a three-dimensional structure according to the present disclosure includes a main body and an insert part disposed within the main body so that at least a portion thereof is surrounded by the main body, A lower part of the main body is formed by laminating materials using a three-dimensional printing device, and has a flat upper surface perpendicular to the laminating direction of the materials, and a recess that is open at the upper surface and deeper than the height of the insert component in the laminating direction. forming a side part, arranging the insert part in the recess, and forming a space between a plane including the upper surface of the lower part of the main body and the insert part in the recess in the stacking direction. A gap filling member is arranged in the gap, and the material is laminated on the lower part of the main body and the gap filling member by the three-dimensional modeling apparatus to form the upper part of the main body.

According to this method, it is possible to reduce the gap in the main body of the three-dimensional structure formed by the three-dimensional printing device so as to hold the insert part, and to ensure good quality and durability of the three-dimensional structure. It becomes possible.

It is a front view showing a three-dimensional structure of the present disclosure. FIG. 1 is a plan view showing a three-dimensional structure of the present disclosure. FIG. 2 is a perspective view showing an insert component included in the three-dimensional structure of the present disclosure. FIG. 2 is a perspective view showing a gap filling member included in the three-dimensional structure of the present disclosure. 1 is a schematic configuration diagram showing a three-dimensional printing apparatus for manufacturing a three-dimensional structure of the present disclosure. FIG. 1 is a schematic configuration diagram for explaining a manufacturing procedure of a three-dimensional structure according to the present disclosure. FIG. 1 is a schematic configuration diagram for explaining a manufacturing procedure of a three-dimensional structure according to the present disclosure. FIG. 1 is a schematic configuration diagram for explaining a manufacturing procedure of a three-dimensional structure according to the present disclosure. FIG. 1 is a schematic configuration diagram for explaining a manufacturing procedure of a three-dimensional structure according to the present disclosure. FIG. 1 is a schematic configuration diagram for explaining a manufacturing procedure of a three-dimensional structure according to the present disclosure.

Next, embodiments for carrying out the invention of the present disclosure will be described with reference to the drawings.

FIG. 1 is a front view showing the three-dimensional structure 1 of the present disclosure, and FIG. 2 is a plan view showing the three-dimensional structure 1. A three-dimensional structure 1 shown in these drawings is, for example, a part that is fixed to a predetermined location of a vehicle (not shown) via a plurality of bolts, and includes a main body 2 made of thermoplastic resin, and a main body 2 made of thermoplastic resin. A plurality of (in this embodiment, two) insert parts 3 are held. The main body 2 of the three-dimensional structure 1 is formed by laminating thermoplastic resin (material) in a predetermined lamination direction (Z-axis direction in FIGS. 1 and 2) using a three-dimensional modeling apparatus 100 (see FIG. 5). be done.

The insert part 3 is an annular collar into which the bolt is inserted, and as shown in FIGS. 1 and 2, both ends in the axial direction protrude from the main body 2, and the part between the two ends extends from the main body 2. It is arranged within the main body 2 so as to be surrounded by. In this embodiment, the heights of the two insert components 3 in the stacking direction within the main body 2 are the same. Furthermore, an annular convex portion 30 is formed on the outer circumferential surface of the insert component 3, as shown in FIGS. 1 and 3. As a result, the upper surface of the insert component 3 in the stacking direction includes a plurality of convex surfaces (cylindrical surfaces). The insert component 3 is assembled into the main body 2 that is being formed while the three-dimensional printing apparatus 100 is forming the main body 2 by temporarily stopping the operation of the three-dimensional printing apparatus 100.

In addition, in the three-dimensional structure 1, as shown in FIG. 1, at the design stage, a three-dimensional A plane P (see the one-dot chain line in FIG. 1) that is perpendicular to the stacking direction of the thermoplastic resin in the original modeling apparatus 100 is determined. During the formation of the main body 2 by the three-dimensional printing apparatus 100, the three-dimensional model 1 has a gap formed between the plane P and the insert component 3 assembled to the main body 2 in the process of being formed in the stacking direction. A plurality of (in this embodiment, two) gap filling members 4 are included. The gap filling member 4 is formed of the same thermoplastic resin as that used to form the main body 2, and one gap filling member 4 is provided for each of the plurality of insert parts 3. As shown in FIG. 3, each gap filling member 4 has a flat upper surface 41 that will be included in the plane P when the three-dimensional structure 1 is completed, a part of the main body 2, and the surface of the insert part 3. It includes a lower surface 42 that is in close contact with each other, and a pair of side surfaces 44 that each extend in the stacking direction and are in close contact with a portion of the main body 2 .

Among the upper surface 41, lower surface 42, and pair of side surfaces 44 of each gap filling member 4, the upper surface 41 is joined to a portion of the main body 2 located above the plane P. Further, the lower surface 42 is in close contact with a corresponding part of the main body 2 and the insert part 3, but is not joined to the insert part 3 or the like. Further, the pair of side surfaces 44 are in close contact with a part of the main body 2, but are basically not joined to the main body 2. The dimensions of the gap filling member 4 must be accurately determined from the predetermined position of the insert part 3 in the main body 2 and the height of the plane P (height from the lower end surface (lower end) 2b of the main body 2). Can be done. Further, it is preferable that the distance d (see FIG. 1) in the stacking direction between the plane P and the top 3t of the insert component 3 be as small as possible within a range that can sufficiently ensure the strength of the gap filling member 4. Note that the pair of side surfaces 44 may be spaced apart from each other (in the X direction in FIG. 4) from the bottom to the top in the stacking direction, as long as they extend along the stacking direction. .

FIG. 5 is a schematic configuration diagram showing a three-dimensional printing apparatus 100 used for forming the main body 2 of the three-dimensional structure 1. As shown in FIG. The three-dimensional modeling apparatus 100 is a so-called APF (Arburg Plastic Freeforming) 3D printer, and includes a tank 110, a resin supply section 120, a discharge unit 130, and a modeling table 140. The tank 110 stores thermoplastic resin pellets RP, which are standard pellet materials used in general injection molding, extrusion molding, and the like. The resin supply unit 120 melts the pellets RP from the tank 110 and supplies the melted pellets to the discharge unit 130 . The discharge unit 130 includes a piezo element (not shown), a discharge nozzle 135, etc., and utilizes a change in the volume of the piezo element to apply pressure to the molten resin from the resin supply section 120 to eject fine droplets D from the discharge nozzle 135. Discharge toward the modeling table 140.

Furthermore, when the three-dimensional modeling apparatus 100 forms a thermoplastic resin laminate, the modeling table 140 is moved forward and backward in each of the X-axis direction, Y-axis direction, and Z-axis direction in FIG. 5 by a drive device (not shown). That is, the modeling table 140 moves downward in the Z-axis direction so as to maintain a constant distance between the discharge nozzle 135 and the top surface of the laminate (for example, about 0.2 mm) according to the final shape of the laminate. At the same time, it moves in the X-axis direction and the Y-axis direction. This makes it possible to form a laminate having a desired shape with high precision.

Next, the manufacturing procedure of the above three-dimensional structure 1 will be explained with reference to FIGS. 6 to 10.

When manufacturing the three-dimensional structure 1, first, as shown in FIG. 6, droplets D are ejected from the ejection nozzle 135 of the ejection unit 130 while lowering the modeling table 140 and moving it in the X-axis direction and the Y-axis direction. Then, thermoplastic resin is laminated on the modeling table 140. Then, the thermoplastic resin is laminated to the height of the plane P using the three-dimensional modeling apparatus 100, and as shown in FIG. A portion 20 is formed. In addition, in this embodiment, while the lower part 20 of the main body 2 is formed by the three-dimensional printing apparatus 100, a plurality of thermoplastic resins ( Two gap filling members 4 are also formed.

The lower portion 20 of the main body 2 includes a flat upper surface 21 that is perpendicular to the stacking direction of the thermoplastic resin (Z-axis direction in FIG. 7), and a plurality of recesses 22 that are open in the upper surface 21. The height from the surface of the modeling table 140 to the upper surface 21 of the lower portion 20 corresponds to the height from the lower end surface 2b of the main body 2 to the above-mentioned plane P. Therefore, the upper surface 21 of the lower part 20 is included in the plane P. Furthermore, each recess 22 has a bottom surface 22b that is in close contact with the lower surface of the insert component 3 in the stacking direction, and is formed deeper than the height of the insert component 3 in the stacking direction, as shown in FIG.

When the lower part 20 of the main body 2 shown in FIG. 7 is completed, the operation of the three-dimensional printing apparatus 100 is temporarily stopped at that stage, and the insert parts are inserted into each recess 22 of the lower part 20, as shown in FIG. Place 3. At this time, the modeling table 140 is lowered as necessary. When the insert parts 3 are placed in each recess 22 of the lower part 20, the plane P including the upper surface 21 of the lower part 20 and each insert part 3 assembled in the lower part 20 (main body 2 in the middle of formation) A gap (space) G is formed between the two in the stacking direction.

Furthermore, as shown in FIG. 9, a gap filling member 4, which is formed on the modeling table 140 together with the lower part 20, is placed on the insert part 3 in each recess 22 of the lower part 20, that is, in the gap G. Deploy. The lower surface 42 of each gap filling member 4 is in close contact with a portion of the lower portion 20 (main body 2) and the surface of the insert part 3. Further, each side surface 44 of each gap filling member 4 is in close contact with a portion (a part of the main body 2) of the lower portion 20 that defines the recess 22 and extends in the stacking direction. Further, the upper surface 41 of each gap filling member 4 extends flush with the upper surface 21 of the lower portion 20 and is included in the plane P. Thereby, the gap G formed above each insert component 3 is filled with the gap filling member 4.

After placing the gap filling member 4 above each insert part 3, if necessary, return the modeling table 140 to the position when the three-dimensional printing apparatus 100 was temporarily stopped, and as shown in FIG. The upper part 25 of the main body 2 is formed by laminating thermoplastic resin on the lower part 20 and each gap filling member 4 using the original modeling apparatus 100 . Thereby, the upper part 25 is joined to the upper surface 21 of the lower part 20 and the upper surface 41 of each gap filling member 4, and the three-dimensional structure 1 is completed. Note that after placing the gap filling member 4 above each insert component 3, and before the three-dimensional modeling apparatus 100 starts forming the upper part 25 of the main body 2 (resuming molding), the lower part 20 and Each gap filling member 4 may be heated.

As described above, in the three-dimensional structure 1, at the design stage, the material ( A plane P perpendicular to the stacking direction of the droplets D) is determined. When manufacturing such a three-dimensional structure 1, materials are stacked up to the height of the plane P by the three-dimensional printing apparatus 100, and the materials are stacked up to the height of the plane P, and the material is stacked under the main body 2 that is located below the plane P and holds the insert part 3. A side portion 20 is formed. Further, the lower part 20 of the main body 2 is formed to create a gap G between the plane P (upper surface 21 of the lower part 20) and the insert component 3 in the stacking direction, and in the gap G, A gap filling member 4 is arranged. Then, the three-dimensional modeling apparatus 100 stacks materials on the lower part 20 of the main body 2 and the gap filling member 4, to form the upper part 25 located above the plane P of the main body 2 in the stacking direction. This reduces the gap in the main body 2 of the three-dimensional structure 1 formed by the three-dimensional printing apparatus 100 to hold the insert part 3, thereby ensuring good quality and durability of the three-dimensional structure 1. becomes possible.

In addition, in the three-dimensional structure 1, the gap filling member 4 has a flat upper surface 41 included in the plane P, and the upper surface 41 is joined to the upper portion 25 of the main body 2 located above the plane P in the stacking direction. be done. Thereby, it is possible to prevent the gap filling member 4 from falling off from the main body 2 and to firmly hold the insert component 3 by the main body 2 via the gap filling member 4.

Further, each gap filling member 4 of the three-dimensional structure 1 has at least a lower surface 42 that is in close contact with the surface of the insert component 3, and a side surface 44 that extends in the stacking direction and is in close contact with the main body 2. This makes it possible to substantially eliminate gaps within the main body 2 of the three-dimensional structure 1 including the insert component 3.

Further, the main body 2 and the gap filling member 4 of the three-dimensional structure 1 are made of the same thermoplastic resin (material). This further improves the bondability between the upper portion 25 of the main body 2 and the gap filling member 4, making it possible to ensure extremely good quality and durability of the three-dimensional structure 1.

Furthermore, in the three-dimensional structure 1, the main body 2 holds a plurality of insert parts 3, and a gap filling member 4 is provided for each of the plurality of insert parts 3. As a result, compared to the case where one gap filling member is shared between multiple insert parts, the area of the part of the gap filling member 4 that is not joined to the main body 2 can be reduced, and the quality and durability of the three-dimensional structure 1 can be improved. This makes it possible to ensure extremely good results.

Further, the gap filling member 4 of the three-dimensional structure 1 is formed by the three-dimensional printing apparatus 100 while the lower part 20 of the main body 2 is being formed by the three-dimensional printing apparatus 100. That is, the dimensions of the gap filling member 4 can be accurately determined from the position of the insert part 3 in the main body 2 and the height of the plane P including the upper surface 21 of the lower part 20 of the main body 2. Therefore, by forming the gap filling member 4 using the 3D printing apparatus 100 while forming the lower part 20 of the main body 2 using the 3D printing apparatus 100, the molding accuracy of the gap filling member 4 can be improved. It becomes possible to improve the manufacturing efficiency of No. 1. However, the gap filling member 4 may be formed by a processing device different from the three-dimensional printing device 100 (such as another three-dimensional printing device or a cutting device) before the lower portion 20 of the main body 2 is completed.

Furthermore, the three-dimensional structure 1 is formed using a three-dimensional modeling apparatus 100 that is an APF type 3D printer. This makes it possible to accurately form the recess 22 of the lower portion 20 of the main body 2 in accordance with the shape of the insert component 3, and to improve the overall molding accuracy of the main body 2.

Although the upper surface of the insert component 3 in the stacking direction includes a convex surface, the insert component 3 in the three-dimensional structure 1 is not limited to this. That is, the insert component 3 may include a concave surface (recess) on the upper surface in the stacking direction, or may include both a convex surface and a concave surface on the upper surface in the stacking direction. Furthermore, the insert component 3 of the three-dimensional structure 1 may be completely embedded within the main body 2.

As described above, the three-dimensional structure of the present disclosure includes a main body (2) formed by laminating materials using a three-dimensional printing apparatus (100), and at least a portion of which is surrounded by the main body (2). In a three-dimensional structure (1) including an insert part (3) arranged in the main body (2) as shown in FIG. A plane (P) defined perpendicularly to the lamination direction between the upper end (2u) of the material in the lamination direction (Z) and the upper top (3t) of the insert component (3) in the lamination direction. It includes a gap filling member (4) filled in a gap (G) formed between the stacking direction and the stacking direction.

In the three-dimensional structure of the present disclosure, at the design stage, a plane perpendicular to the material stacking direction in the three-dimensional printing device is determined between the upper end of the main body in the stacking direction and the upper top of the insert component in the stacking direction. . When manufacturing such a three-dimensional object, materials are layered up to the height of the plane using a three-dimensional printing device, and a lower part of the main body that is located below the plane and holds the insert part is formed. . Further, the lower part of the main body is formed to create a gap between the plane (upper surface of the lower part) and the insert component in the stacking direction, and a gap filling member is disposed in the gap. Then, the material is laminated on the lower part of the main body and the gap filling member by the three-dimensional modeling apparatus, thereby forming a part located above the plane of the main body in the stacking direction. This makes it possible to reduce the gap within the body of the 3D model formed by the 3D printer to hold the insert part, thereby ensuring good quality and durability of the 3D model. .

Further, the gap filling member (4) may have a flat upper surface (41) included in the plane (P), and the upper surface (41) of the gap filling member (4) is the main body. (2) It may be joined to the portion (25) located above the plane (P) in the stacking direction.

This prevents the gap filling member from falling off from the main body, and allows the insert component to be firmly held by the main body via the gap filling member.

Furthermore, the gap filling member (4) has at least a lower surface (41) that is in close contact with the surface of the insert component (3), and a side surface (44) that extends along the lamination direction and is in close contact with the main body (2). ).

This makes it possible to substantially eliminate gaps within the main body of the three-dimensional structure including the insert component.

Further, the upper surface of the insert component (3) in the stacking direction may include at least one of a concave surface and a convex surface.

Furthermore, the main body (2) and the gap filling member (4) may be formed of the same thermoplastic resin.

Thereby, it becomes possible to further improve the bondability between the main body and the gap filling member, and to ensure extremely good quality and durability of the three-dimensional structure.

Further, the main body (2) of the three-dimensional structure (1) may hold a plurality of insert parts (3), and the gap filling member (4) may hold a plurality of insert parts (3). 3) may be provided for each.

As a result, compared to the case where one gap filling member is shared between multiple insert parts, the area of the part of the gap filling member that is not joined to the main body is reduced, and the quality and durability of the three-dimensional model are extremely improved. It becomes possible to secure the

The method for manufacturing a three-dimensional structure of the present disclosure includes a main body (2) and an insert part (3) disposed within the main body (2) so that at least a portion thereof is surrounded by the main body (2). In the method for manufacturing a three-dimensional structure (1), materials are laminated by a three-dimensional printing apparatus (100), and a flat upper surface (21) perpendicular to the lamination direction of the materials and an opening at the upper surface (21) are formed. and a recess (22) deeper than the height of the insert part (3) in the stacking direction. (3) and the plane (P) including the upper surface (21) of the lower part (20) of the body (2) and the insert part (3) in the recess (22). A gap filling member (4) is arranged in the gap (G) formed between the layers in the stacking direction, and the lower part (20) of the main body (2) and the gap filling member ( The above material is laminated on top of 4) to form the upper part (25) of the main body (20).

According to this method, it is possible to reduce the gap in the main body of the three-dimensional structure formed by the three-dimensional printing device so as to hold the insert part, and to ensure good quality and durability of the three-dimensional structure. It becomes possible.

In addition, the gap filling member (4) has an upper surface (41) extending flush with the upper surface (21) of the lower portion (20) of the main body (2), and at least the insert part (3). and a side surface (44) extending along the lamination direction and coming into close contact with the lower portion (20) of the main body (2). The bottom surface (22b) of the recess (22) of the lower part (20) may be formed in close contact with the insert part (3).

This makes it possible to substantially eliminate gaps within the main body of the three-dimensional structure including the insert component.

Furthermore, while forming the lower portion (20) of the main body (2) with the three-dimensional printing apparatus (100), forming the gap filling member (4) with the three-dimensional printing apparatus (100). Good too.

That is, the dimensions of the gap filling member can be accurately determined from the position of the insert part in the main body and the height of the upper surface of the lower part of the main body. Therefore, by forming the gap filling member with the 3D printing device while forming the lower part of the main body with the 3D printing device, the molding accuracy of the gap filling member and the manufacturing efficiency of the 3D model can be improved. becomes possible. However, the gap filling member may be formed by a processing device different from the three-dimensional modeling device before the lower portion of the main body is completed.

Further, the main body (2) and the gap filling member (4) may be formed of the same thermoplastic resin.

Thereby, it is possible to further improve the bondability between the upper part of the main body and the gap filling member, and to ensure extremely good quality and durability of the three-dimensional structure.

Furthermore, an APF type 3D printer may be used as the three-dimensional printing apparatus (100).

This makes it possible to accurately form the recessed portion of the lower portion of the main body in accordance with the shape of the insert component, and to improve the overall molding accuracy of the main body.

It goes without saying that the invention of the present disclosure is not limited to the above-described embodiments, and that various changes can be made within the scope of the present disclosure. Further, the above-described embodiment is merely one specific form of the invention described in the Summary of the Invention column, and does not limit the elements of the invention described in the Summary of the Invention column.

INDUSTRIAL APPLICATION The invention of this indication can be utilized in the manufacturing industry of a three-dimensional structure manufactured using a three-dimensional printing apparatus.

1 three-dimensional structure, 2 main body, 2u upper end surface, 20 lower part, 21 upper surface, 22 recess, 22b bottom surface, 25 upper part, 3 insert part, 3t top, 4 gap filling member, 41 upper surface, 42 lower surface, 44 Side, 100 3D modeling device, D droplet, P plane, RP pellet.

Claims (11)

A three-dimensionally formed article including a main body formed by laminating materials using a three-dimensional printing device, and an insert part disposed within the main body so as to be at least partially surrounded by the main body,
the insert part in the main body, and a plane defined perpendicularly to the lamination direction between the upper end of the main body in the lamination direction of the materials and the upper top of the insert part in the lamination direction; A three-dimensional structure including a gap filling member filled in a gap formed between layers in the stacking direction. The three-dimensional structure according to claim 1,
The gap filling member has a flat upper surface included in the plane, and the upper surface of the gap filling member is joined to a portion of the main body located above the plane in the stacking direction. In the three-dimensional structure according to claim 2,
The gap filling member is a three-dimensional structure having at least a lower surface that is in close contact with the surface of the insert component, and a side surface that extends along the lamination direction and is in close contact with the main body. The three-dimensional structure according to any one of claims 1 to 3,
An upper surface of the insert component in the stacking direction includes at least one of a concave surface and a convex surface. The three-dimensional structure according to any one of claims 1 to 3,
The main body and the gap filling member are three-dimensional structures made of the same thermoplastic resin. The three-dimensional structure according to any one of claims 1 to 3,
The main body of the three-dimensional structure holds a plurality of the insert components, and the gap filling member is provided for each of the plurality of insert components. A method for manufacturing a three-dimensional structure, including a main body and an insert part disposed within the main body so as to be at least partially surrounded by the main body,
A lower part of the main body is formed by laminating materials using a three-dimensional printing device, and has a flat upper surface perpendicular to the laminating direction of the materials, and a recess that is open at the upper surface and deeper than the height of the insert component in the laminating direction. forming the side parts;
placing the insert part within the recess;
disposing a gap filling member in a gap formed between a plane including the upper surface of the lower portion of the main body and the insert component in the recess in the stacking direction;
laminating the material on the lower part of the main body and the gap filling member by the three-dimensional modeling apparatus to form an upper part of the main body;
A method for manufacturing three-dimensional objects. In the method for manufacturing a three-dimensional structure according to claim 7,
The gap filling member has an upper surface that extends flush with the upper surface of the lower portion of the main body, a lower surface that is in close contact with at least a surface of the insert component, and a lower surface that extends along the lamination direction and is attached to the main body. and a side surface in close contact with the lower portion of the
A method for manufacturing a three-dimensional structure, wherein the bottom surface of the recess in the lower portion is formed in close contact with the insert component. The method for manufacturing a three-dimensional structure according to claim 7 or 8,
A method for manufacturing a three-dimensional structure, wherein the gap filling member is formed by the three-dimensional printing device while the lower portion of the main body is formed by the three-dimensional printing device. The method for manufacturing a three-dimensional structure according to claim 7 or 8,
A method for manufacturing a three-dimensional structure, wherein the main body and the gap filling member are formed of the same thermoplastic resin. The method for manufacturing a three-dimensional structure according to claim 10,
A method for manufacturing a three-dimensional object using an APF type 3D printer as the three-dimensional modeling device.

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