JP2016150534A - Apparatus for manufacturing three-dimensional molded object and three-dimensional molded object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a three-dimensional molded object, which facilitates a maintenance work, and a three-dimensional molded object having high dimensional accuracy.SOLUTION: An apparatus 100 for manufacturing a three-dimensional molded object includes: a layer forming region 20 having a molding stage 10, three-dimensional molding composition supply means 11 for supplying a three-dimensional molding composition comprising particles and a solvent to the molding stage 10, and layer forming means 12 for forming a layer 1 by using the three-dimensional molding composition; a solvent removing region 30 including solvent removing means 14 for removing the solvent in the layer 1; and a binding liquid solution discharging region 40 including discharge means 15 for discharging a binding liquid containing a binder that binds a plurality of particles to the layer 1. The molding stage 10 relatively moves with respect to each region. The apparatus 100 for manufacturing a three-dimensional molded object has a maintenance part 17 that moves on the moving axis of the stage 10 and performs a maintenance work on the apparatus 100 for manufacturing a three-dimensional molded object.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a three-dimensional structure manufacturing apparatus and a three-dimensional structure.

  A technique for modeling a three-dimensional object while solidifying powder with a binding liquid is known (see, for example, Patent Document 1). In this technique, a three-dimensional object is formed by repeating the following operations. First, the powder is thinly spread with a uniform thickness to form a powder layer, and the powder is bonded to each other by discharging a binding liquid to a desired portion of the powder layer. As a result, in the powder layer, only the portion where the binding liquid is discharged is bonded to form a thin plate-like member (hereinafter referred to as “cross-sectional member”). Thereafter, a thin powder layer is formed on the powder layer, and a binding liquid (curable ink) is discharged to a desired portion. As a result, a new cross-sectional member is also formed in the portion of the newly formed powder layer where the binding liquid has been discharged. At this time, since the binding liquid discharged onto the powder layer soaks and reaches the previously formed cross-sectional member, the newly formed cross-sectional member is also bonded to the previously formed cross-sectional member. By repeating such operations and laminating thin plate-like cross-sectional members one by one, a three-dimensional object can be formed.

  With such 3D modeling technology, as long as there is 3D shape data of the object to be modeled, it is possible to immediately model by combining powder, and there is no need to create a mold prior to modeling. It is possible to form a three-dimensional object quickly and inexpensively. In addition, since thin plate-like cross-sectional members are layered one by one and shaped, for example, even a complex object having an internal structure can be formed as an integrated shaped object without being divided into a plurality of parts. .

  However, in the conventional three-dimensional structure manufacturing apparatus, it is necessary to perform maintenance of the apparatus after the apparatus is temporarily stopped, and the apparatus cannot be easily maintained. In addition, since maintenance cannot be performed easily, there is a problem that the dimensional accuracy of the three-dimensional structure to be manufactured is lowered.

JP-A-6-218712

  An object of the present invention is to provide a three-dimensional structure manufacturing apparatus that can be easily maintained, and to provide a three-dimensional structure with high dimensional accuracy.

Such an object is achieved by the present invention described below.
The three-dimensional structure manufacturing apparatus of the present invention is a three-dimensional structure manufacturing apparatus for manufacturing a three-dimensional structure by laminating layers,
A modeling table on which the three-dimensional model is formed;
Three-dimensional modeling composition supply means for supplying a three-dimensional modeling composition containing particles and a solvent to the modeling table; and a layer forming means for forming the layer using the supplied three-dimensional modeling composition A layer forming region having,
A binding liquid discharge region having a discharge means for discharging a bonding liquid that bonds the plurality of particles to the layer;
The molding table is configured to move relative to each region,
It has a maintenance part which moves on the movement axis | shaft of the said modeling stand, and performs the maintenance of a three-dimensional structure manufacturing apparatus.

  Thereby, the three-dimensional structure manufacturing apparatus which can perform a maintenance easily can be provided.

In the three-dimensional structure manufacturing apparatus of the present invention, the maintenance section maintains a first maintenance means for maintaining the three-dimensional structure forming composition supply means, a second maintenance means for maintaining the layer forming means, and a maintenance for the discharge means. It is preferable to have at least one type of third maintenance means.
Thereby, a three-dimensional structure manufacturing apparatus can be maintained more easily.

In the three-dimensional structure manufacturing apparatus of the present invention, it is preferable that the first maintenance means, the second maintenance means, and the third maintenance means are movable.
Thereby, a three-dimensional structure manufacturing apparatus can be maintained more easily.

In the three-dimensional structure manufacturing apparatus of the present invention, the apparatus has a solvent removal region provided with a solvent removal means for removing the solvent in the formed layer,
It is preferable that the maintenance unit is provided on a side opposite to the side on which the solvent removal region is provided with respect to the modeling table.

  Thereby, when a modeling stand moves to a solvent removal area, maintenance of each means can be performed.

In the three-dimensional structure manufacturing apparatus of the present invention, the modeling table moves on the lower side in the vertical direction of the three-dimensional structure forming composition supplying means, the layer forming means, the solvent removing means, and the discharging means. It is preferable to be configured.
Thereby, further size reduction of the three-dimensional structure manufacturing apparatus can be achieved.

In the three-dimensional structure manufacturing apparatus of the present invention, it is preferable that the solvent removal region, the layer formation region, and the binding liquid discharge region are arranged in this order in the moving direction of the modeling table.
Thereby, further size reduction of the three-dimensional structure manufacturing apparatus can be achieved.

  In the three-dimensional structure manufacturing apparatus of this invention, it is preferable to have the isolation | separation means which can isolate the said layer formation area | region and the said solvent removal area | region.

  Thereby, it can prevent more effectively that the inside of an apparatus will be contaminated with the dry composition for three-dimensional modeling.

In the three-dimensional structure manufacturing apparatus of this invention, it is preferable to have a heating means as said solvent removal means.
Thereby, a solvent can be removed more efficiently.

The three-dimensional structure of the present invention is manufactured by the three-dimensional structure manufacturing apparatus of the present invention.
Thereby, a three-dimensional structure with high dimensional accuracy can be provided.

It is sectional drawing from the side of the suitable embodiment of the three-dimensional structure manufacturing apparatus of this invention. It is a top view at the time of planarly viewing the three-dimensional structure manufacturing apparatus shown in FIG. It is sectional drawing from the side surface which shows the operation state of the three-dimensional structure manufacturing apparatus shown in FIG. It is sectional drawing from the side surface which shows the operation state of the three-dimensional structure manufacturing apparatus shown in FIG. It is sectional drawing from the side surface which shows the operation state of the three-dimensional structure manufacturing apparatus shown in FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1. First, a preferred embodiment of the three-dimensional structure manufacturing apparatus of the present invention will be described.

  FIG. 1 is a cross-sectional view from the side of a preferred embodiment of the three-dimensional structure manufacturing apparatus of the present invention, and FIG. 2 is a plan view when the three-dimensional structure manufacturing apparatus shown in FIG. 3-5 is sectional drawing from the side surface which shows the operation state of the three-dimensional structure manufacturing apparatus shown in FIG.

  The three-dimensional structure manufacturing apparatus 100 is an apparatus that manufactures a three-dimensional structure by laminating layers 1 formed using a composition for three-dimensional structure including particles and a solvent.

  As shown in FIGS. 1 and 2, the three-dimensional structure manufacturing apparatus 100 includes a modeling table 10 on which a three-dimensional structure is modeled, a layer forming region 20 for forming the layer 1 on the modeling table 10, and modeling. A solvent removal region 30 for removing the solvent in the layer 1 formed on the table 10, and a combined liquid discharge region 40 for discharging a binding liquid containing a binder that binds a plurality of particles to the layer 1 from which the solvent has been removed; ,have.

  The layer formation region 20 is a layer of the three-dimensional modeling composition on the modeling table 10 using the three-dimensional modeling composition supply means 11 that supplies the three-dimensional modeling composition and the supplied three-dimensional modeling composition. Squeegee (layer forming means) 12 for forming 1.

The solvent removal region 30 has a heating means 14 as a solvent removal means.
The binding liquid discharge area 40 includes discharge means 15 for discharging the binding liquid to the layer 1 and ultraviolet irradiation means 16 for irradiating the layer 1 with ultraviolet light.

  In addition, the three-dimensional structure manufacturing apparatus 100 includes a recovery unit 13 that recovers the composition for three-dimensional structure that has become excessive due to the formation of the layer 1.

  In addition, the three-dimensional structure manufacturing apparatus 100 includes a maintenance unit 17 that performs maintenance inside the three-dimensional structure manufacturing apparatus 100.

The three-dimensional modeling composition and the binding liquid will be described in detail later.
Hereinafter, each configuration will be described in detail.

  As shown in FIGS. 1 and 2, the modeling table 10 includes a frame body 101, a modeling stage 102 provided inside the frame body 101, and a supply region 103 to which a composition for three-dimensional modeling is supplied. doing.

The modeling table 10 can be driven in the X-axis direction by a driving means (not shown). If it demonstrates in detail, it will be comprised so that the vertical direction lower side of the composition supply means 11, the squeegee 12, the heating means 14, and the discharge means 15 for 3D modeling may be moved.
The frame body 101 is composed of a frame-shaped member.

The modeling stage 102 has a rectangular shape on the XY plane.
The modeling stage 102 is configured to be driven (lifted / lowered) in the Z-axis direction by a driving unit (not shown).

The layer 1 is formed in a region formed by the inner wall surface of the frame body 101 and the modeling stage 102.
The supply region 103 is a region where the three-dimensional modeling composition supply unit 11 supplies the three-dimensional modeling composition.

  The supply region 103 has a long shape in the Y-axis direction, and is provided on the solvent removal region 30 side of the frame 101.

  The layer formation region 20 includes a three-dimensional modeling composition supply unit 11 and a squeegee (layer formation unit) 12.

  The three-dimensional modeling composition supply means 11 has a function of supplying the three-dimensional modeling composition to the supply region 103. As the three-dimensional modeling composition supply unit 11, a dispenser, a hopper, or the like can be used.

  The squeegee (layer forming means) 12 has a long plate shape in the Y-axis direction. Further, the squeegee 12 is configured such that the tip in the short axis direction is in contact with the upper surface of the frame body 101 and the supply region 103.

  As shown in FIG. 3, the composition for three-dimensional modeling supplied to the supply region 103 is conveyed onto the modeling stage 102 by the squeegee 12 described later to form the layer 1 as the modeling table 10 moves. .

  The collection unit 13 is provided opposite to the side of the modeling table 10 where the solvent removal region 30 is provided. In other words, the collection unit 13 is provided on the side opposite to the supply region 103 of the modeling table 10.

  The collection unit 13 is a box-shaped member whose upper surface is open, and is provided separately from the modeling table 10. The collection unit 13 has a function of collecting the composition for three-dimensional modeling that has become excessive due to the formation of the layer 1. And the collect | recovered composition for three-dimensional modeling is used for a reuse.

  The collection unit 13 is configured to move together with the modeling table 10 until the three-dimensional modeling composition that has become excessive due to the formation of the layer 1 is collected.

  The collection unit 13 is configured to move or stop separately when the modeling table 10 enters the solvent removal region 30. Thus, since the collection | recovery part 13 can move independently of the modeling stand 10, the influence of the solvent removal area | region 30 with respect to the collection | recovery part 13 can be made small. As a result, it is possible to prevent the recovered three-dimensional modeling composition in the recovery unit 13 from being dried due to the volatilization of the solvent and scattering into the three-dimensional model manufacturing apparatus 100.

The solvent removal region 30 is provided adjacent to the layer formation region 20.
The solvent removal region 30 has a heating means 14.

  The heating means 14 has a function of heating the layer 1 formed in the layer forming region 20 and removing at least a part of the solvent contained in the layer 1.

  When the modeling table 10 moves to the solvent removal region 30 and heats the layer 1, the recovery unit 13 is separated from the modeling table 10 and stands by in the layer formation region 20 (see FIG. 4). Alternatively, the region moves further from the binding liquid discharge region 40 to a region in the −X axis direction (right direction in the drawing). In this case, it is sufficient that the movement is completed by the time when the bonding liquid is discharged to the layer 1 from which the solvent has been removed by the discharge means 15 described later.

  Between the solvent removal region 30 and the layer formation region 20, a shutter (isolation means) 18 that isolates both regions is provided. By providing such a shutter 18, the three-dimensional modeling composition collected in the collection unit 13 or the three-dimensional modeling composition attached to the modeling table 10 or the squeegee due to the influence of the solvent removal region 30. (Layer forming means) It is possible to more effectively prevent the composition for three-dimensional modeling attached to 12 from being dried and scattered in the three-dimensional modeled manufacturing apparatus 100. Further, formation failure of the layer 1 in the layer forming region 20, contamination of the apparatus due to condensation of the volatile solvent, deterioration of the member, and the like can be prevented. For example, by reducing the influence of heat in the solvent removal region 30, a layer due to a change in viscosity of the composition for three-dimensional modeling supplied to the supply region 103, a thermal expansion of layer forming means such as the squeegee 12, or a change in elastic modulus Formation defects (layer thickness change, etc.), supply amount variation from the composition supply means 11 for three-dimensional modeling, thermal expansion of the modeling table, frame, rail, and the like can be suppressed. In the present specification, “isolation” means that heat from the solvent removal region 30 and air hardly leak into the layer formation region 20, and the heat in the solvent removal region 30 is not necessarily limited. , It may not be necessary to completely prevent air from leaking into the layer forming region 20. In addition to a physical shutter, the area adjacent to the solvent removal area 30 may be isolated by an air curtain or the like.

  The shutter 18 is configured to be closed while the heating unit 14 is operating, and to be opened when the modeling table 10 is moved.

  The bonding liquid discharge area 40 includes a discharge means 15 that discharges the bonding liquid to the layer 1 and an ultraviolet irradiation means 16 that irradiates the bonding liquid discharged to the layer 1 with ultraviolet light.

  The binding liquid discharge area 40 is provided on the opposite side of the layer formation area 20 from the solvent removal area 30. Thus, by disposing the binding liquid discharge area 40 away from the solvent removal area 30, the influence of the heat of the solvent removal area 30 and the volatile solvent on the discharge liquid can be reduced, and the discharge means 15 The discharge accuracy is improved, and a model with higher accuracy can be formed.

The discharge means 15 has a function of discharging the binding liquid to the layer 1 from which the solvent has been removed.
Specifically, as shown in FIG. 5, the modeling table 10 on which the layer 1 from which the solvent is removed is formed moves from the solvent removal region 30 in the −X axis direction (right direction in the drawing), and the vertical of the discharge unit 15 When reaching the drawing area on the lower side in the direction, the binding liquid is discharged from the discharge means 15 to the layer 1.

  The ejection means 15 is mounted with a droplet ejection head that ejects droplets of a binding liquid by an inkjet method. Further, the discharge means 15 includes a binding liquid supply unit (not shown). In the present embodiment, a so-called piezo drive type droplet discharge head is employed. In the present embodiment, the ejection unit 15 employs a line head in which a plurality of nozzles are arranged in the Y-axis direction as a droplet ejection head. Here, the “line head” is a droplet discharge head provided so that the nozzle region formed in the Y-axis direction intersecting the X-axis direction can cover the entire modeling stage 102. In addition, the area | region of the nozzle of the Y-axis direction of a line head does not need to be able to cover the whole Y-axis direction of all the modeling bases 10 with which the three-dimensional structure manufacturing apparatus respond | corresponds. Note that in the case of discharging a plurality of types of binding liquid droplets such as cyan, magenta, yellow, and clear, a plurality of line heads are provided in the X-axis direction.

The ultraviolet irradiation means 16 is provided on the side opposite to the layer forming region 20 of the ejection means 15.
The ultraviolet irradiation means 16 has a function of curing the binder in the layer 1 by irradiating the layer 1 with ultraviolet rays and bonding the particles in the layer 1 together. In the case where a plurality of types of binding liquid droplets such as cyan, magenta, yellow, and clear are ejected, an ultraviolet irradiation unit 16 is provided for each color.

  A maintenance unit 17 is provided opposite to the solvent removal region 30 side of the recovery unit 13.

  The maintenance unit 17 includes a first maintenance unit 17a that performs wiping of a supply port of the 3D modeling composition supply unit 11, a second maintenance unit 17b that performs wiping of the 3D modeling composition attached to the squeegee 12, and the like. A third maintenance unit 17c for maintaining the droplet discharge head of the discharge unit 15 is configured. Each maintenance means can be driven independently.

  In the first maintenance means 17a for wiping the supply port of the 3D modeling composition supply means 11, the altered 3D modeling composition is thrown away at the nozzle tip (supply port) of a dispenser, hopper, or the like. A throw-away area is provided. In addition, a wiping member (elastic material such as cloth or rubber) that wipes and scrapes while contacting the nozzle tip, a capping member that protects the nozzle tip (supply port) when the machine is stopped or maintained, and tertiary from the supply port A suction mechanism or the like that forcibly sucks the original modeling composition may be provided.

  The second maintenance means 17b for wiping the three-dimensional modeling composition attached to the squeegee 12 includes a wiping member (an elastic body such as cloth or rubber) for wiping the squeegee tip, and a cleaning liquid on the squeegee tip. A cleaning liquid application section such as a cleaning liquid tank in which the spray and the squeegee tip can be immersed in the cleaning liquid is provided. In addition, a capping member that protects the squeegee tip when the apparatus is stopped or maintenance may be provided.

  The third maintenance means 17c for maintaining the liquid droplet ejection head of the ejection means 15 is provided with a disposal area for discarding the thickened binding liquid. A suction mechanism that forcibly sucks the binding liquid from each nozzle, a wiping member (elastic body such as cloth or rubber) that wipes while contacting the nozzle plate, a capping member that protects the entire nozzle plate when the machine is stopped or when maintenance is performed, etc. May be provided.

  Further, each maintenance means constituting the maintenance unit 17 is movable on the moving axis of the modeling table 10. And when the modeling base 10 moves to the solvent removal area | region 30, it moves on the moving axis of the modeling base 10, and it is comprised so that each maintenance may be performed.

  In the three-dimensional structure manufacturing apparatus 100 as described above, when the modeling table 10 moves to the solvent removal region 30, it is possible to move on the moving axis of the modeling table 10 and perform maintenance simultaneously. There is no need to perform maintenance after stopping the three-dimensional structure manufacturing apparatus 100 once, and the maintenance can be easily performed.

A pair of parallel rails 19 extend from the side of the modeling table 10.
The modeling table 10 is attached to the rail 19 so as to be reciprocally movable along the extending direction (X-axis direction) of the rail 19. The rail 19 is fixed so as not to move with respect to the base. One rail 19 may be provided.

  The modeling table 10 includes an X-direction drive motor (not shown). The X-axis direction drive motor is a stepping motor or the like, and moves the modeling table 10 in the X-axis direction when a drive signal in the X-axis direction is supplied from the control unit. Each maintenance means also has an X-axis direction drive motor and can be moved independently.

  The “on the movement axis” may be, for example, a configuration in which each maintenance means can move using the same guide rail as the rail 19 of the modeling table 10 provided in the X-axis direction. Thereby, when the composition for three-dimensional modeling scatters in the three-dimensional model manufacturing apparatus 100 and adheres to the rail, the maintenance of the rail becomes easy.

  Moreover, since the collection | recovery part 13 can move independently of the modeling stand 10, the influence of the solvent removal area | region 30 can be made small. As a result, it is possible to prevent the recovered three-dimensional modeling composition in the recovery unit 13 from being dried and scattered in the three-dimensional model manufacturing apparatus 100.

  Moreover, in the three-dimensional structure manufacturing apparatus 100 as described above, since each unit is disposed without waste, the number of moving mechanisms can be reduced. As a result, the apparatus can be reduced in size. Furthermore, since each means is arrange | positioned without waste, manufacture of a three-dimensional structure can be performed at higher speed.

  Moreover, in the three-dimensional structure manufacturing apparatus 100 of the present embodiment, the solvent removal region 30, the layer formation region 20, and the binding liquid discharge region 40 are arranged in this order in the moving direction of the modeling table 10. By setting it as such a structure, a three-dimensional structure can be manufactured more efficiently and the further speed-up of manufacture of a three-dimensional structure can be aimed at. Further, by providing the binding liquid discharge region 40 at the end, the liquid droplet discharge head can be replaced more easily.

  The three-dimensional structure manufacturing apparatus 100 includes a control unit 50 and a computer 60 connected to the control unit 50.

  The control unit 50 includes a CPU and a memory. The CPU controls each unit described above by loading the computer program stored in the memory or the recording medium into the memory and executing it.

  A procedure in which the three-dimensional structure manufacturing apparatus 100 forms a three-dimensional object will be briefly described. First, the computer 60 slices the three-dimensional data representing the shape of the three-dimensional structure according to the stacking pitch in the Z direction, and generates a plurality of cross-sectional data along the XY direction. When the control unit 50 acquires the cross-sectional data from the computer 60, the control unit 50 controls the three-dimensional modeling composition supply unit 11, the squeegee 12, and the modeling table 10 to form a layer inside the frame body 101. And the modeling stand 10 is moved, the heating means 14 is controlled, and the layer inside the frame 101 is heated. Thereafter, the modeling table 10 is moved, the discharge means 15 is driven according to the cross-sectional data to discharge the binding liquid onto the layer, and the ultraviolet irradiation means 16 is controlled toward the discharged binding liquid to irradiate the ultraviolet light. Then, the binder is cured by ultraviolet light and the powders are bonded to each other, and a cross-sectional body corresponding to the cross-sectional data for one layer is formed inside the frame body 101. When the cross section for one layer is formed in this way, the control unit 50 drives an actuator (not shown) to lower the modeling stage 102 along the Z direction by a stacking pitch corresponding to the modeling resolution in the Z direction. . When the modeling stage 102 is lowered, the control unit 50 forms a new layer 1 on the cross-section already formed on the modeling stage 102. When the new layer 1 is formed, the control unit 50 receives the next cross-sectional data from the computer 60, discharges the binding liquid to the new layer 1, and irradiates the ultraviolet light, thereby forming a new cross-sectional body. . As described above, when the control unit 50 receives the cross-sectional data of each layer from the computer 60, the control unit 50 controls the actuator, the three-dimensional modeling composition supply unit 11, the squeegee 12, the heating unit 14, the discharge unit 15, and the ultraviolet irradiation unit 16. Thus, a cross-sectional body is formed layer by layer, and a three-dimensional structure is formed by laminating them. The control unit 50 causes the first maintenance means, the second maintenance means, and the third maintenance means to perform maintenance in accordance with periodic maintenance work instructions from the computer 60.

  In the above description, the case where the squeegee 12 is used as the layer forming unit has been described.

  Moreover, although it demonstrated as having the ultraviolet irradiation means 16 in the said description, it is not limited to this. For example, when the binder contains a thermosetting resin, it may be a heating means.

  In the above description, the maintenance unit 17 has been described as having the first maintenance unit, the second maintenance unit, and the third maintenance unit. However, the present invention is not limited to this. For example, the surface of the ultraviolet irradiation unit 16 is wiped. Maintenance means, maintenance means for cleaning the surface of the supply region 103, and the like may be included.

2. Next, a method for manufacturing a three-dimensional structure using the above-described three-dimensional structure manufacturing apparatus will be described.

  First, the three-dimensional modeling composition supply means 11 supplies the three-dimensional modeling composition to the supply region 103.

  Next, as the modeling table 10 moves to the left in the drawing, the three-dimensional modeling composition supplied to the supply region 103 is conveyed to the modeling stage 102 by the squeegee 12, and the layer 1 is formed.

  The thickness of the layer 1 is not particularly limited, but is preferably 30 μm or more and 500 μm or less, and more preferably 70 μm or more and 150 μm or less. As a result, while making the productivity of the three-dimensional structure sufficiently excellent, the occurrence of unintentional irregularities in the produced three-dimensional structure is more effectively prevented, and the dimensional accuracy of the three-dimensional structure is improved. It can be made particularly excellent.

  After the formation of the layer 1, the surplus composition for three-dimensional modeling is recovered by the recovery unit 13 that is moving together with the modeling table 10. The recovery unit 13 stops the movement with the modeling table 10 after recovering the surplus 3D modeling composition. Thereby, alteration (for example, it becomes impossible to reuse) of the collect | recovered composition for three-dimensional modeling can be prevented. Moreover, the moving speed of the modeling stand accompanying acceleration / deceleration is improved, and as a result, the modeling time can be shortened.

  Next, the modeling table 10 on which the layer 1 is formed moves to the solvent removal region 30. In the layer formation region 20 and the solvent removal region 30, the moving speed of the modeling table 10 may be the same or different. For example, when the moving speed is different, when the modeling table 10 enters the solvent removal region 30, the moving speed is increased compared to when the layer forming region 20 is moved. By doing so, the thermal history of the entire layer 1 becomes more stable, and the penetration of the binding liquid into the layer 1 becomes uniform.

  Next, in the solvent removal region 30, with the shutter 18 closed, the layer 1 is heated by the heating means 14 to remove the solvent contained in the layer 1.

  In addition, while the modeling base 10 moves to the solvent removal area 30, each maintenance means of the maintenance unit 17 moves on the moving axis of the modeling base 10, and the squeegee 12 and the three-dimensional modeling composition supply means 11 Maintenance of the supply port and the droplet discharge head is performed. It is not necessary to perform maintenance every time the layer 1 is formed, and it is not necessary to perform all maintenance of the squeegee 12, the supply port of the three-dimensional modeling composition supply unit 11, and the droplet discharge head. When the maintenance is completed, each maintenance means moves to the position before the maintenance. When the movement of each maintenance means is completed, the collection unit 13 also moves in the −X axis direction (right direction in the drawing) from the binding liquid discharge region 40. In order to improve productivity, it is desirable to move simultaneously with the movement of each maintenance means.

  Next, the shutter 18 is opened, and the modeling table 10 is moved to the binding liquid discharge area 40. At this time, each maintenance means of the collection unit 13 and the maintenance unit 17 has been moved in the −X-axis direction (right direction in the drawing) from the binding liquid discharge region 40 (see FIG. 5).

  It should be noted that the movement speed of the modeling table 10 may be the same or different in the layer formation region 20 and the binding liquid discharge region 40. For example, when the moving speed is different, when the modeling table 10 enters the binding liquid discharge area 40, the moving speed is lowered as compared to when the layer forming area 20 is moving. By doing so, the discharge accuracy of the binding liquid with respect to the layer 1 can be increased. The modeling table 10 may stop before entering the binding liquid discharge area 40.

  Further, in the binding liquid discharge region 40, in the case of discharge by the serial scan method in which the discharge unit 15 performs discharge while moving in the Y-axis direction, the modeling table 10 is stationary at the time of discharge.

  Next, the bonding liquid is discharged onto the layer 1 in the drawing area of the discharging means 15 in the bonding liquid discharge area 40.

  Next, the layer 1 is irradiated with ultraviolet rays by the ultraviolet irradiation means 16, the binder in the layer 1 is cured, and the cured layer 1 and an uncured portion are formed (ultraviolet irradiation step).

  Thereafter, the layer is lowered in the Z-axis direction by the thickness of the layer 1 forming the modeling stage 102, and the above steps are repeated in order. Thereafter, the three-dimensional structure is formed by removing the uncured portion.

  The three-dimensional structure manufactured as described above has high dimensional accuracy and high reliability.

3. Next, the three-dimensional modeling composition will be described in detail.
The three-dimensional modeling composition includes a plurality of particles and a solvent.

Hereinafter, each component will be described in detail.
<Particle>
Any particles can be used as the particles, but the particles are preferably composed of porous particles (porous particles). Thereby, when manufacturing a three-dimensional structure, the binder in the binding liquid can be suitably penetrated into the pores, and as a result, suitable for manufacturing a three-dimensional structure excellent in mechanical strength. Can be used.

  Examples of the constituent material of the particles include inorganic materials, organic materials, and composites thereof.

  Examples of the inorganic material constituting the particles include various metals and metal compounds. Examples of the metal compound include various metal oxides such as silica, alumina, titanium oxide, zinc oxide, zircon oxide, tin oxide, magnesium oxide, and potassium titanate; various kinds such as magnesium hydroxide, aluminum hydroxide, and calcium hydroxide. Metal hydroxides; various metal nitrides such as silicon nitride, titanium nitride and aluminum nitride; various metal carbides such as silicon carbide and titanium carbide; various metal sulfides such as zinc sulfide; various metals such as calcium carbonate and magnesium carbonate Carbonates; sulfates of various metals such as calcium sulfate and magnesium sulfate; silicates of various metals such as calcium silicate and magnesium silicate; phosphates of various metals such as calcium phosphate; aluminum borate, magnesium borate, etc. And various metal borates and composites thereof.

  Examples of the organic material constituting the particles include synthetic resins and natural polymers. More specifically, polyethylene resin; polypropylene; polyethylene oxide; polypropylene oxide, polyethyleneimine; polystyrene; polyurethane; polyurea; Silicone resin; acrylic silicone resin; polymer having (meth) acrylic acid ester such as polymethyl methacrylate as a constituent monomer; cross polymer having ethylene (meth) acrylate ester such as methyl methacrylate crosspolymer (ethylene acrylic) Acid copolymer resins, etc.); polyamide resins such as nylon 12, nylon 6, copolymer nylon; polyimide; carboxymethyl cellulose; gelatin; starch; chitin;

Among these, the particles are preferably composed of an inorganic material, more preferably composed of a metal oxide, and even more preferably composed of silica. Thereby, the characteristics such as mechanical strength and light resistance of the three-dimensional structure can be made particularly excellent. In addition, since silica is excellent in fluidity, it is advantageous for forming a layer with higher thickness uniformity, and the productivity and dimensional accuracy of the three-dimensional structure are particularly excellent. it can. Moreover, when the particles are made of silica, light scattering by the particles on the surface of the three-dimensional structure to be manufactured can be more effectively prevented. Silica generally has a hydroxyl group on the surface and can be suitably used.
As silica, commercially available products can be suitably used.

  The average particle diameter of the particles is not particularly limited, but is preferably 1 μm or more and 25 μm or less, and more preferably 1 μm or more and 15 μm or less. As a result, the mechanical strength of the three-dimensional structure can be made particularly excellent, and the occurrence of unintentional irregularities in the produced three-dimensional structure can be more effectively prevented, and the three-dimensional structure can be prevented. The dimensional accuracy can be made particularly excellent. In addition, the fluidity of the powder for three-dimensional modeling, the fluidity of the composition for three-dimensional modeling including the powder for three-dimensional modeling are particularly excellent, and the productivity of the three-dimensional modeling is particularly excellent. it can. In the present invention, the average particle diameter means a volume-based average particle diameter. For example, a dispersion obtained by adding a sample to methanol and dispersing for 3 minutes with an ultrasonic disperser (Coulter counter method particle size distribution analyzer ( It can be determined by measuring with a 50 μm aperture using COULTER ELECTRONICS INS TA-II type).

  The Dmax of the particles is preferably 3 μm or more and 40 μm or less, and more preferably 5 μm or more and 30 μm or less. As a result, the mechanical strength of the three-dimensional structure can be made particularly excellent, and the occurrence of unintentional irregularities in the produced three-dimensional structure can be more effectively prevented, and the three-dimensional structure can be prevented. The dimensional accuracy can be made particularly excellent. In addition, the fluidity of the powder for three-dimensional modeling, the fluidity of the composition for three-dimensional modeling including the powder for three-dimensional modeling are particularly excellent, and the productivity of the three-dimensional modeling is particularly excellent. it can. Moreover, the scattering of the light by particle | grains in the surface of the manufactured three-dimensional structure can be prevented more effectively.

  The particles may have any shape, but preferably have a spherical shape. Thereby, the fluidity of the powder for three-dimensional modeling, the fluidity of the composition for three-dimensional modeling including the powder for three-dimensional modeling are particularly excellent, and the productivity of the three-dimensional modeling is particularly excellent In addition, it is possible to more effectively prevent the occurrence of unintentional irregularities in the manufactured three-dimensional structure, and to make the dimensional accuracy of the three-dimensional structure particularly excellent. Moreover, the scattering of the light by particle | grains in the surface of the manufactured three-dimensional structure can be prevented more effectively.

The content of the three-dimensional modeling powder in the three-dimensional modeling composition is preferably 10% by mass or more and 90% by mass or less, and more preferably 15% by mass or more and 58% by mass or less. The particles may be porous, the range of the bulk density of approximately 0.1g ^/ cm ³ ~1.0g ^/ cm 3 is suitably in the ^range of 0.15g / cm ³ ~0.5g / cm 3 A porous powder is more preferable. Thereby, the mechanical strength of the finally obtained three-dimensional structure can be made particularly excellent while the fluidity of the composition for three-dimensional structure is sufficiently excellent.

≪Solvent≫
The three-dimensional modeling composition includes a solvent. Thereby, the fluidity | liquidity of the composition for three-dimensional modeling can be made especially excellent, and the productivity of a three-dimensional modeling thing can be made especially excellent.

  Although it does not specifically limit as a solvent which comprises the composition for three-dimensional modeling, It is preferable to use an aqueous solvent. The aqueous solvent is composed of water and / or a liquid having excellent compatibility with water, but is preferably composed mainly of water, and particularly the water content is 70 wt% or more. It is preferable that it is 90 wt% or more. Thereby, the water-soluble resin can be more reliably dissolved, and the fluidity of the three-dimensional modeling composition and the uniformity of the composition of the layer 1 formed using the three-dimensional modeling composition are particularly excellent. It can be. Moreover, water is easy to remove after the formation of the layer 1, and even when it remains in the three-dimensional structure, it is difficult to adversely affect water. Moreover, it is advantageous from the viewpoint of safety to the human body and environmental problems.

  The content of the solvent in the three-dimensional modeling composition is preferably 5% by mass or more and 75% by mass or less, and more preferably 35% by mass or more and 70% by mass or less. As a result, the effects of including the solvent as described above are more remarkably exhibited, and the solvent can be easily removed in a short time during the manufacturing process of the three-dimensional structure. This is advantageous from the viewpoint of improving the performance.

  In particular, when the three-dimensional modeling composition contains water as a solvent, the content of water in the three-dimensional modeling composition is preferably 20% by mass to 73% by mass, and more preferably 50% by mass to 70% by mass. It is more preferable that the amount is not more than mass%. Thereby, the effects as described above are more remarkably exhibited.

≪Water-soluble resin≫
The composition for three-dimensional modeling may include a water-soluble resin together with a plurality of particles. By including the water-soluble resin, the particles can be bonded (temporarily fixed), and the particles can be effectively prevented from being unintentionally scattered. Thereby, the safety | security of an operator and the improvement of the dimensional accuracy of the three-dimensional molded item manufactured can be aimed at. Further, since the water-soluble resin has high affinity with the particle surface, the particle surface can be easily coated.

  It is preferable that at least a part of the water-soluble resin is soluble in water. For example, the solubility in water at 25 ° C. (mass soluble in 100 g of water) is 5 [g / 100 g water] or more. It is more preferable that it is 10 [g / 100 g water] or more. Thereby, the affinity with the particle surface can be made higher, and unbound particles can be more easily removed in the unbound particle removal step.

  In the composition for three-dimensional modeling, the water-soluble resin is preferably in a liquid state (for example, a dissolved state, a molten state, etc.) at least in the layer forming step. Thereby, the uniformity of the thickness of the layer 1 formed using the composition for three-dimensional modeling can be made higher easily and reliably.

  The water-soluble resin includes at least one selected from the group consisting of polyvinyl alcohol, polyvinyl pyrrolidone, sodium polyacrylate, ammonium polyacrylate, carboxymethyl cellulose, hydroxyethyl cellulose, polyethylene oxide, polyethylene glycol, polyacrylamide, and polyethyleneimine. It is preferable to use what is included. Thereby, the affinity between the water-soluble resin and the particles (hydrogen bond between the water-soluble functional group of the water-soluble resin and the hydroxyl group, carboxyl group, or amino group on the particle surface) can be made particularly high. .

  In addition, since the water-soluble resin has a hydroxyl group and has high affinity (solubility) with an aqueous solvent, it can be easily and uniformly dissolved. The content of the water-soluble resin in the three-dimensional modeling composition is preferably 15% by volume or less, and more preferably 2% by volume or more and 5% by volume or less with respect to the bulk volume of the particles. As a result, it is possible to ensure a wider space for the binding liquid to enter while sufficiently exerting the function of the water-soluble resin as described above, and to make the mechanical strength of the three-dimensional structure particularly excellent. Can do.

≪Other ingredients≫
Further, the three-dimensional modeling composition may include components other than those described above. Examples of such components include a polymerization initiator; a polymerization accelerator; a penetration accelerator; a wetting agent (humectant); a fixing agent; an antifungal agent; an antiseptic; an antioxidant; an ultraviolet absorber; Examples include regulators.

4). Next, the binding liquid will be described in detail.

<< Binder >>
The binding liquid contains at least a binder.
The binder is a component having a function of binding particles by curing.

  Examples of the binder include various kinds of materials such as thermoplastic resins; thermosetting resins; visible light curable resins (narrowly defined photocurable resins) that are cured by light in the visible light region, ultraviolet curable resins, and infrared curable resins. Photocurable resin; X-ray curable resin and the like can be mentioned, and one or more selected from these can be used in combination. Among these, from the viewpoint of the mechanical strength of the obtained three-dimensional structure, the productivity of the three-dimensional structure, and the like, the binder is preferably a curable resin. Among various curable resins, in particular, from the viewpoint of mechanical strength of the obtained three-dimensional structure, productivity of the three-dimensional structure, storage stability of the binding liquid, etc., in particular, an ultraviolet curable resin (polymerizable compound). Is preferred.

  As the ultraviolet curable resin, a resin which is polymerized by addition polymerization or ring-opening polymerization by radical species or cationic species generated from a photopolymerization initiator by ultraviolet irradiation is preferably used. Examples of the polymerization mode of addition polymerization include radical, cation, anion, metathesis, and coordination polymerization. Examples of the ring-opening polymerization method include cation, anion, radical, metathesis, and coordination polymerization.

  Examples of the addition polymerizable compound include compounds having at least one ethylenically unsaturated double bond. As the addition polymerizable compound, a compound having at least one, preferably two or more terminal ethylenically unsaturated bonds can be preferably used.

  The ethylenically unsaturated polymerizable compound has a chemical form of a monofunctional polymerizable compound and a polyfunctional polymerizable compound, or a mixture thereof. Examples of the monofunctional polymerizable compound include unsaturated carboxylic acids (for example, acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid, maleic acid, etc.), esters thereof, amides, and the like. As the polyfunctional polymerizable compound, an ester of an unsaturated carboxylic acid and an aliphatic polyhydric alcohol compound, or an amide of an unsaturated carboxylic acid and an aliphatic polyvalent amine compound is used.

  In addition, unsaturated carboxylic acid esters or amides having nucleophilic substituents such as hydroxyl group, amino group, mercapto group and the like, addition products of isocyanates and epoxies, dehydration condensation products of carboxylic acids, etc. Can be used. In addition, addition reaction products of unsaturated carboxylic acid esters or amides having an electrophilic substituent such as an isocyanate group or an epoxy group with alcohols, amines and thiols, as well as removal of halogen groups, tosyloxy groups, etc. A substitution reaction product of an unsaturated carboxylic acid ester or amide having a releasing substituent and an alcohol, amine or thiol can also be used.

  Specific examples of the radical polymerizable compound that is an ester of an unsaturated carboxylic acid and an aliphatic polyhydric alcohol compound include, for example, (meth) acrylic acid ester, which is either monofunctional or polyfunctional. Can also be used.

≪Other ingredients≫
The binding liquid may contain components other than those described above. Examples of such components include various colorants such as pigments and dyes; dispersants; surfactants; polymerization initiators; polymerization accelerators; solvents; penetration enhancers; wetting agents (humectants); Examples include glazes; antiseptics; antioxidants; ultraviolet absorbers; chelating agents; pH adjusters; thickeners; fillers;

  In particular, when the binding liquid contains a colorant, a three-dimensional structure colored in a color corresponding to the color of the colorant can be obtained.

  In particular, by including a pigment as the colorant, the light resistance of the binding liquid and the three-dimensional structure can be improved. As the pigment, either an inorganic pigment or an organic pigment can be used.

Examples of the inorganic pigment include carbon blacks (CI pigment black 7) such as furnace black, lamp black, acetylene black, channel black, iron oxide, titanium oxide, and the like, and one kind selected from these. Alternatively, two or more kinds can be used in combination.
Among the inorganic pigments, titanium oxide is preferable in order to exhibit a preferable white color.

  Examples of the organic pigment include insoluble azo pigments, condensed azo pigments, azo lakes and chelate azo pigments, phthalocyanine pigments, perylene and perinone pigments, anthraquinone pigments, quinacridone pigments, dioxane pigments, thioindigo pigments, isoindolinone pigments, and quinophthalone. Polycyclic pigments such as pigments, dye chelates (for example, basic dye type chelates, acidic dye type chelates), dyeing lakes (basic dye type lakes, acid dye type lakes), nitro pigments, nitroso pigments, aniline black, Daylight fluorescent pigments and the like can be mentioned, and one or more selected from these can be used in combination.

  When the binding liquid contains a pigment, the average particle diameter of the pigment is preferably 300 nm or less, and more preferably 50 nm or more and 250 nm or less. As a result, the discharge stability of the binding liquid and the dispersion stability of the pigment in the binding liquid can be made particularly excellent, and an image with better image quality can be formed.

  Examples of the dye include acid dyes, direct dyes, reactive dyes, basic dyes, and the like, and one or more selected from these can be used in combination.

  When the binding liquid contains a coloring agent, the content of the coloring agent in the binding liquid is preferably 1% by mass or more and 20% by mass or less. Thereby, particularly excellent concealability and color reproducibility can be obtained.

  In particular, when the binding liquid contains titanium oxide as a colorant, the content of titanium oxide in the binding liquid is preferably 12% by mass or more and 18% by mass or less, and is 14% by mass or more and 16% by mass or less. More preferably. Thereby, a particularly excellent concealing property can be obtained.

  When the binding liquid contains a pigment, the dispersibility of the pigment can be further improved if it further contains a dispersant. As a result, a partial decrease in mechanical strength due to pigment bias can be more effectively suppressed.

  Although it does not specifically limit as a dispersing agent, For example, the dispersing agent currently used in preparing pigment dispersion liquids, such as a polymer dispersing agent, is mentioned. Specific examples of the polymer dispersant include, for example, polyoxyalkylene polyalkylene polyamine, vinyl polymer and copolymer, acrylic polymer and copolymer, polyester, polyamide, polyimide, polyurethane, amino polymer, silicon-containing polymer, and sulfur-containing polymer. , Fluorine-containing polymers, and epoxy resins having one or more types as main components. When the binding liquid contains a surfactant, the three-dimensional structure can have better abrasion resistance. The surfactant is not particularly limited. For example, polyester-modified silicone or polyether-modified silicone as a silicone-based surfactant can be used, and among them, polyether-modified polydimethylsiloxane or polyester-modified polydimethylsiloxane. Is preferably used.

  The binding liquid may contain a solvent. Thereby, the viscosity of the binding liquid can be suitably adjusted, and even when the binding liquid contains a high-viscosity component, the discharge stability of the binding liquid by the inkjet method can be made particularly excellent.

  Examples of the solvent include (poly) alkylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol monomethyl ether, and propylene glycol monoethyl ether; ethyl acetate, n-propyl acetate, iso-acetate Acetates such as propyl, n-butyl acetate and iso-butyl acetate; aromatic hydrocarbons such as benzene, toluene and xylene; methyl ethyl ketone, acetone, methyl isobutyl ketone, ethyl n-butyl ketone, diisopropyl ketone, acetylacetone, etc. Ketones: Examples include alcohols such as ethanol, propanol, and butanol, and one or more selected from these can be used in combination.

  Further, the viscosity of the binding liquid is preferably 10 mPa · s or more and 25 mPa · s or less, and more preferably 15 mPa · s or more and 20 mPa · s or less. Thereby, the discharge stability of the ink by the inkjet method can be made particularly excellent. In addition, in this specification, a viscosity means the value measured in 25 degreeC using an E-type viscosity meter (Tokyo Keiki Co., Ltd. VISCONIC ELD).

Moreover, you may use multiple types of binding liquid for manufacture of a three-dimensional structure.
For example, a binding liquid containing a colorant (color ink) and a binding liquid not containing a colorant (clear ink) may be used. Thereby, for example, on the appearance of the three-dimensional structure, a binding liquid containing a colorant is used as a binding liquid to be applied to the area that affects the color tone, and on the appearance of the three-dimensional structure, the area does not affect the color tone. A binding solution containing no colorant may be used as the binding solution to be applied. In the finally obtained three-dimensional structure, an area (coat layer) using a binding liquid not containing a colorant is provided on the outer surface of the area formed using the binding liquid containing a colorant. A plurality of types of binding liquids may be used in combination.

  Further, for example, a plurality of types of binding liquids containing different colorants may be used. Thereby, the color reproduction area which can be expressed can be made wide by the combination of these binding liquids.

  When a plurality of types of binding liquids are used, it is preferable to use at least a blue-violet (cyan) binding liquid, a reddish-violet (magenta) binding liquid, and a yellow (yellow) binding liquid. Thereby, the color reproduction area which can be expressed can be made wider by the combination of these binding liquids.

  Further, by using the white (white) binding liquid in combination with other colored binding liquids, for example, the following effects can be obtained. That is, the finally obtained three-dimensional structure is provided on the outer surface side of the first region, which overlaps with the first region to which the white (white) binding liquid is applied, and the first region. And a region to which a colored binding liquid other than white is applied. Thereby, the 1st area | region to which the white (white) binding liquid was provided can exhibit concealment property, and can raise the chroma of a three-dimensional structure more.

5. Three-dimensional structure The three-dimensional structure of the present invention is manufactured using the three-dimensional structure manufacturing apparatus as described above. Thereby, a highly reliable three-dimensional structure can be provided.

  The use of the three-dimensional structure of the present invention is not particularly limited, and examples thereof include appreciation objects / exhibits such as dolls and figures; medical devices such as implants.

  Moreover, the three-dimensional structure of the present invention may be applied to any of prototypes, mass-produced products, and custom-made products.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to these.

  For example, in the above-described embodiment, the configuration in which the recovery unit and the modeling table are separate from each other has been described. However, the configuration is not limited thereto, and the recovery unit and the modeling table may be configured integrally.

  Moreover, in the manufacturing method of a three-dimensional structure, you may perform a pre-processing process and a post-processing process as needed.

As a pre-processing process, the cleaning process of a modeling stage etc. are mentioned, for example.
As the post-treatment process, for example, a cleaning process, a shape adjustment process for deburring, a coloring process, a coating layer forming process, a light irradiation process or a heat treatment for surely curing an uncured ultraviolet curable resin is performed. Examples include an ultraviolet curable resin curing completion step.

  Moreover, although embodiment mentioned above demonstrated as what provides a binding liquid with respect to all the layers, you may have the layer to which a binding liquid is not provided. For example, the binding liquid may not be applied to the layer formed immediately above the modeling stage, and the layer may function as a sacrificial layer.

  In the above-described embodiment, the case where the ejection step is performed by the ink jet method has been mainly described, but the ejection step may be performed using another method (for example, another printing method).

  Moreover, each maintenance means which comprises the maintenance part 17 may be the structure which can move to a -Z-axis direction with respect to the site | part which performs a maintenance.

  The operation of each maintenance means constituting the maintenance unit 17 may be performed when a maintenance instruction from the operator is input to the computer 60 or before the operation of the apparatus is stopped. In addition, the maintenance frequency of each maintenance means constituting the maintenance unit 17 during modeling may be such that the squeegee 12 is maintained more frequently than the droplet discharge head.

  Moreover, you may use the gypsum powder which does not contain a solvent as a three-dimensional modeling composition. In this case, water-based ink that does not contain a binder can be used as the binding liquid. When the water-based ink is selectively adhered, it becomes a hydroxide and becomes a hydration reaction and hardens. Even if it heat-processes for every layer formation, you may heat-process the whole molded article after completion | finish of modeling.

  The modeling process may be executed by a computer controlling each unit of the three-dimensional model manufacturing apparatus 100 instead of the control unit. That is, the computer may fulfill the function of the control unit of the three-dimensional structure manufacturing apparatus 100.

  Moreover, you may use together the shutter 18 and an air curtain. Thereby, it can prevent more effectively that it scatters in the three-dimensional structure manufacturing apparatus 100. The air curtain may be on both sides where the shutter 18 is opened or closed, or may be only on one side.

DESCRIPTION OF SYMBOLS 1 ... Layer 10 ... Modeling stand 11 ... Three-dimensional modeling composition supply means 12 ... Squeegee (layer formation means)
13 ... Recovery unit 14 ... Heating means (solvent removing means)
DESCRIPTION OF SYMBOLS 15 ... Discharge means 16 ... Ultraviolet irradiation means 17 ... Maintenance part 17a ... 1st maintenance means 17b ... 2nd maintenance means 17c ... 3rd maintenance means 18 ... Shutter (isolation means)
DESCRIPTION OF SYMBOLS 19 ... Rail 20 ... Layer formation area 30 ... Solvent removal area 40 ... Binding liquid discharge area 50 ... Control part 60 ... Computer 100 ... Three-dimensional structure manufacturing apparatus 101 ... Frame body 102 ... Modeling stage 103 ... Supply area

Claims (9)

A three-dimensional structure manufacturing apparatus for manufacturing a three-dimensional structure by laminating layers,
A modeling table on which the three-dimensional model is formed;
Three-dimensional modeling composition supply means for supplying a three-dimensional modeling composition containing particles and a solvent to the modeling table; and a layer forming means for forming the layer using the supplied three-dimensional modeling composition A layer forming region having,
A binding liquid discharge region having a discharge means for discharging a bonding liquid that bonds the plurality of particles to the layer;
The molding table is configured to move relative to each region,
A three-dimensional structure manufacturing apparatus comprising a maintenance unit that moves on a moving axis of the modeling table and performs maintenance of the three-dimensional structure manufacturing apparatus.   The maintenance unit is at least one of first maintenance means for maintaining the three-dimensional modeling composition supply means, second maintenance means for maintaining the layer forming means, and third maintenance means for maintaining the discharge means. The three-dimensional structure manufacturing apparatus of Claim 1 which has the means of.   The three-dimensional structure manufacturing apparatus according to claim 2, wherein each of the first maintenance means, the second maintenance means, and the third maintenance means is movable. A solvent removal region having a solvent removal means for removing the solvent in the formed layer;
The three-dimensional structure manufacturing apparatus according to any one of claims 1 to 3, wherein the maintenance unit is provided on the opposite side of the modeling table from the side on which the solvent removal region is provided. .   The tertiary according to claim 4, wherein the modeling table is configured to move vertically below the three-dimensional modeling composition supply unit, the layer forming unit, the solvent removing unit, and the discharge unit. Original model manufacturing equipment.   The three-dimensional structure manufacturing apparatus according to claim 4, wherein the solvent removal region, the layer formation region, and the binding liquid discharge region are arranged in this order in the moving direction of the modeling table.   The three-dimensional structure manufacturing apparatus according to any one of claims 4 to 6, further comprising an isolating unit capable of isolating the layer formation region and the solvent removal region.   The three-dimensional structure manufacturing apparatus according to any one of claims 4 to 7, further comprising a heating unit as the solvent removing unit.   A three-dimensional structure manufactured by the three-dimensional structure manufacturing apparatus according to any one of claims 1 to 8.

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