JP2017119363A - Three-dimensional molding apparatus and three-dimensional molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase initial strength of a manufactured three-dimensional molded object even when such a powder material is used that is a powder prepared by compounding a resin powder with a ceramic material powder such as aluminum oxide that itself is not cured with water as a main component of a binder.SOLUTION: A three-dimensional molding apparatus manufactures a three-dimensional molded object by forming a powder layer of a powder material in a molding tank and discharging a binder through a discharge head to the powder layer, based on the image data relating to a cross-sectional shape of the three-dimensional molded object. The three-dimensional molding apparatus includes electromagnetic wave irradiation means for irradiating the three-dimensionally molded object with electromagnetic waves. The electromagnetic irradiation means has an electromagnetic irradiation source for irradiating the three-dimensional molded object with electromagnetic waves and blocking means for blocking leakage of electromagnetic waves to the outside, the electromagnetic waves radiating from the electromagnetic wave irradiation source to irradiate the three-dimensional molded object.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a three-dimensional modeling apparatus and a three-dimensional modeling method, and more particularly to a three-dimensional modeling apparatus and a three-dimensional modeling method for producing a three-dimensional model using powder as a raw material.

  Conventionally, as a three-dimensional modeling apparatus for producing a three-dimensional structure, a powder fixed lamination method (binder jet) for producing a three-dimensional structure using powder such as gypsum powder (gypsum powder) or resin powder (resin powder) as a raw material. 3D modeling apparatus) is known.

  The three-dimensional modeling method by the three-dimensional modeling apparatus of this powder fixed lamination method is a method in which a binder, which is a liquid binder mainly composed of water, is sprayed onto various powders from a discharge head (inkjet head) one by one. The three-dimensional structure is produced by laminating and stacking the solidified modeling layers.

  More specifically, in the three-dimensional modeling method using the powder fixed lamination type three-dimensional modeling apparatus, first, a powder material is spread in a modeling tank for modeling a three-dimensional modeled object to form a powder layer having a predetermined thickness.

  Next, a binder for curing the powder material is discharged from the discharge head to the powder layer based on image data having a predetermined resolution of the cross-sectional shape of the three-dimensional structure, and the image data is converted into the powder layer. A modeling layer having a cross-sectional shape is formed.

  Thereafter, a new powder layer having a predetermined thickness is formed on the powder layer on which the modeling layer having a cross-sectional shape is formed, and based on the image data representing the next cross-sectional shape of the formed cross-sectional shape on the powder layer, A binder is discharged from the discharge head, and a modeling layer having a cross-sectional shape based on the image data is formed on the new powder layer.

Then, such a process is repeatedly performed, and a three-dimensional structure is produced by sequentially forming a modeling layer having a cross-sectional shape based on image data representing all cross-sectional shapes.

Here, in the three-dimensional modeling method by the conventional three-dimensional modeling apparatus, immediately after producing the three-dimensional modeled object as described above, the heating apparatus or the three-dimensional model arranged inside the three-dimensional modeling apparatus Using a heating device installed outside the modeling apparatus, the warming air is blown out toward the three-dimensional structure by the heating apparatus, and the temperature of the three-dimensional structure is increased by the warm air, thereby the three-dimensional structure. It promoted drying and solidification.

  By the way, when using powder mixed with gypsum powder and resin powder as the powder material, the resin powder mainly contributes to the final strength of the produced three-dimensional structure, but the initial strength is Mainly gypsum powder contributes.

  For this reason, as shown in the above-described conventional three-dimensional modeling method, when the temperature of the three-dimensional structure is raised immediately after the three-dimensional structure is manufactured, the gypsum powder quickly dries, and as a result, the three-dimensional structure The drying and solidification of the product was promoted.

Therefore, since the three-dimensional structure can be quickly transferred to the next step such as the operation of removing the powder material adhering to the three-dimensional structure immediately after making the three-dimensional structure, the three-dimensional structure It is possible to speed up the manufacturing process of objects.

However, in the case of using, as the powder material, for example, a powder in which a powder of a ceramic material such as aluminum oxide (Al ₂ O ₃ ) (ceramic powder) and a resin powder (resin powder) are used, the produced three-dimensional Although the final strength of the shaped article is excellent, it is difficult to obtain a sufficient initial strength.

  That is, if a powder such as a ceramic material that is not hardened by water, which is the main component of the binder itself, is used, immediately after the three-dimensional structure is produced as in the conventional three-dimensional modeling method, Even if the modeling object is heated with warm air, the three-dimensional object cannot be sufficiently dried and solidified, and the initial strength of the three-dimensional object is low and brittle. .

For this reason, after producing the three-dimensional structure, it is not possible to immediately move to the next step such as the operation of removing the powder material adhering to the three-dimensional structure without taking time, There was a problem that the production work of the model was a factor that delayed.

  The prior art that the applicant of the present application knows at the time of filing a patent is as described above and is not an invention related to a known literature, so there is no prior art information to be described.

  The present invention has been made in view of the above-mentioned problems with the prior art, and the object of the present invention is to provide a ceramic material such as aluminum oxide that does not harden itself with water, which is the main component of the binder. Even when using powder and resin powder blended as a powder material, it is intended to provide a 3D modeling apparatus and 3D modeling method that can increase the initial strength of the produced 3D model. is there.

  In order to achieve the above object, the three-dimensional modeling apparatus and the three-dimensional modeling method according to the present invention blend a powder of a ceramic material such as aluminum oxide that does not harden with water, which is a main component of the binder itself, and a resin powder. Invented based on the knowledge of the present inventor that the resin powder constituting the powder material needs to be hardened at an early stage in order to harden the three-dimensional structure formed using the powder as a powder material at an early stage. Is.

  That is, the three-dimensional modeling apparatus and the three-dimensional modeling method according to the present invention use electromagnetic waves such as microwave heating using a microwave after three-dimensional modeling of a three-dimensional modeled object based on the knowledge of the inventors of the present application. The initial strength of the three-dimensional structure is increased by heating the entire three-dimensional structure by electromagnetic wave heating and promoting the curing of the resin powder.

As a result, even if it is a three-dimensional structure using a powder material in which a powder of a ceramic material such as aluminum oxide and a resin powder is blended, it is immediately converted into the three-dimensional structure without taking time after the preparation. It is possible to promptly move to the next step such as an operation of removing the adhering powder material, and the manufacturing operation of the three-dimensional structure is not delayed.

  The three-dimensional modeling apparatus according to the present invention is configured such that the powder material is formed by discharging a binder from a discharge head to a powder layer formed of a powder material formed in a modeling tank based on image data about a cross-sectional shape of the three-dimensional structure. In the three-dimensional modeling apparatus for producing a three-dimensional structure by curing the three-dimensional structure, the three-dimensional structure includes an electromagnetic wave irradiation means for irradiating an electromagnetic wave to the three-dimensional structure, and the electromagnetic wave irradiation means is provided on the three-dimensional structure. An electromagnetic wave irradiation source that irradiates electromagnetic waves, and a shielding means that covers the three-dimensional structure and shields leakage of electromagnetic waves irradiated from the electromagnetic wave irradiation source to the three-dimensional structure. Is.

  The three-dimensional modeling apparatus according to the present invention is the above-described three-dimensional modeling apparatus according to the present invention, wherein the electromagnetic wave irradiation source radiates electromagnetic waves in a plurality of frequency bands individually or simultaneously.

  The three-dimensional modeling apparatus according to the present invention is the above-described three-dimensional modeling apparatus according to the present invention, wherein the powder material is a powder obtained by blending ceramic powder and resin powder.

  Further, the three-dimensional modeling method according to the present invention provides the above powder by discharging a binder from a discharge head to a powder layer made of a powder material formed in a modeling tank based on image data about a cross-sectional shape of a three-dimensional structure. In the three-dimensional modeling method for curing a material to produce a three-dimensional model, the three-dimensional model is irradiated with an electromagnetic wave, and the whole three-dimensional model is heated by electromagnetic heating to form the three-dimensional model. It is intended to promote the hardening of the modeled object.

  The three-dimensional modeling method according to the present invention is such that, in the above-described three-dimensional modeling method according to the present invention, electromagnetic waves in a plurality of frequency bands are irradiated individually or simultaneously when the electromagnetic waves are irradiated.

  The three-dimensional modeling method according to the present invention is the above-described three-dimensional modeling method according to the present invention, wherein the powder material is a powder in which ceramic powder and resin powder are blended.

  Since the present invention is configured as described above, a powder in which a powder of a ceramic material such as aluminum oxide that is not cured by water, which is a main component of the binder itself, and a resin powder is used as a powder material. Even in such a case, there is an excellent effect that the initial strength of the produced three-dimensional structure can be increased.

FIG. 1 is a schematic configuration perspective view showing an example of an embodiment of a three-dimensional modeling apparatus according to the present invention. 2 is a schematic cross-sectional perspective view of the three-dimensional modeling apparatus shown in FIG. 3 is a cross-sectional schematic configuration perspective view corresponding to FIG. 2 showing the positional relationship of a modeling tank during three-dimensional modeling in the three-dimensional modeling apparatus shown in FIG. 4 is a cross-sectional schematic configuration perspective view corresponding to FIG. 2 showing the positional relationship of the modeling tank during microwave irradiation in the three-dimensional modeling apparatus shown in FIG. FIG. 5 is an explanatory view taken along arrow A in FIG.

Hereinafter, an example of an embodiment of a 3D modeling apparatus and a 3D modeling method according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows a schematic configuration perspective view of a three-dimensional modeling apparatus according to an example of an embodiment of the present invention, and FIG. 2 shows a cross-sectional schematic configuration perspective view of the three-dimensional modeling apparatus shown in FIG. Has been.

  The three-dimensional modeling apparatus 10 shown in FIGS. 1 and 2 is a three-dimensional modeling apparatus that moves back and forth on a modeling stage by a powder fixing lamination method, and includes a base portion 12 that is a fixed system member.

  A groove portion 14 extending in the X-axis direction in the XYZ orthogonal coordinate system is formed in the base portion 12.

  In the groove portion 14, a modeling tank 16 configured to be movable in the X-axis direction and capable of moving up and down in the Z-axis direction, and connected integrally with the modeling tank 16, is movable in the X-axis direction together with the modeling tank 16. A storage tank 18 is arranged.

  A region extending in the X-axis direction of the groove portion 14 is a movable region in which the modeling tank 16 and the storage tank 18 can move in the groove portion 14.

  A pair of support portions 20 are formed on the base portion 12 so as to rise from both regions in the Y-axis direction of the groove portion 14 so as to sandwich the groove portion 14, and the pair of support portions 20 in the XYZ orthogonal coordinate system. A storage tank support rail 22 that extends along the Y-axis direction is supported.

  A storage tank 24 having an opening 24a that is openable and closable downward is disposed at a central portion in the Y-axis direction on the storage tank support rail 22. The opening 24 a is disposed so as to be able to face the modeling tank 16 located in the groove 14.

  Furthermore, a substantially U-shaped roller support portion 26 having an opening on the lower side in the Z-axis direction is formed on the base portion 12 so as to sandwich the groove portion 14. Is supported by a roller 28 that can relatively move from the rear side to the front side in the X-axis direction.

A rail 26a is formed on the roller support portion 26 along the Y-axis direction, and the discharge head 30 that discharges the binder to the modeling tank 16 reciprocates along the Y-axis direction with respect to the rail 26a. Supported as possible.

In addition, on the rear side of the groove portion 14 on the base portion 12 in the X-axis direction of the movable area between the modeling tank 16 and the storage tank 18, specifically, on the rear side of the roller support portion 26 in the X-axis direction, A microwave oscillation device 40, which is a type of electromagnetic wave oscillation device, is disposed as an example of the electromagnetic wave irradiation means so as to cover the groove portion 14 at an upper position. The microwave oscillator 40 will be described later in detail.

  Here, the positional relationship between the modeling tank 16 and the storage tank 18 is such that the storage tank 18 is disposed on the front side in the X-axis direction with respect to the modeling tank 16.

  The ejection head 30 is disposed so as to be located on the rear side of the roller 28 in the X-axis direction, and scans in one pass to eject the binder in both the forward path and the backward path.

In addition, the code | symbol 100 has shown an example of the three-dimensional modeling thing produced with the three-dimensional modeling apparatus 10. FIG.

  In the above configuration, in the three-dimensional modeling apparatus 10, the opening 24 a of the storage tank 24 is opened from the initial state in which the opening 24 a of the storage tank 24 storing the powder material and the modeling tank 16 are opposed to each other. Then, the powder material is supplied to the modeling tank 16.

  Next, by moving the modeling tank 16 and the storage tank 18 from the front side in the X-axis direction to the rear side in the groove portion 14, the roller 28 relatively moves on the modeling tank 16 from the rear side in the X-axis direction to the front side. The powder material supplied to the modeling tank 16 is spread in the modeling tank 16 to form a powder layer having a predetermined thickness.

  At this time, the bottom surface of the modeling tank 16 is controlled to rise to a preset position.

  In addition, the excess powder material that has not been used for forming the powder layer in the modeling tank 16 moves from the rear side in the X-axis direction to the front side relative to the roller 28 from the modeling tank 16 to the storage tank 18. Thus, the groove 14 is accommodated in the accommodating tank 18 that moves from the front side in the X-axis direction to the rear side together with the modeling tank 16.

  After forming the powder layer in the modeling tank 16 as described above, the modeling tank 16 is moved in the X-axis direction in the groove portion 14, and the modeling tank 16 is moved to a predetermined position below the discharge head 30 as shown in FIG. Place at the position.

  Then, an image having a predetermined resolution with respect to the cross-sectional shape in the Z-axis direction of the three-dimensional structure to be produced (that is, the shape on the XY plane) with respect to the powder layer formed in the modeling tank 16. Based on the data, while moving the modeling tank 16 from the front side in the X-axis direction to the rear side in the groove portion 14 and moving the discharge head 30 in the Y-axis direction, with respect to the powder layer formed in the modeling tank 16 A binder for curing the powder material is discharged from the discharge head 30 to form a modeling layer.

  When the discharge of the binder to the powder layer is completed and the modeling layer is formed, the process returns to the initial state and the above-described processing is performed, and the binder is discharged to the next powder layer to form the next modeling layer. By repeating these operations, the three-dimensional structure 100 is three-dimensionally formed.

Note that the binder used in the present embodiment may be transparent or colored.

  In the three-dimensional modeling apparatus 10, when the three-dimensional modeling of the three-dimensional modeled object 100 is completed by the above-described processing, the modeling tank 16 is moved to the lower side of the microwave oscillator 40 as shown in FIGS. 4 and 5. The three-dimensional structure 100 three-dimensionally formed by the microwave oscillator 40 is subjected to a microwave heating process.

  Here, the three-dimensional modeling apparatus 10 is different from the conventional technique in that the three-dimensional modeling object 100 that has completed the three-dimensional modeling is heated by the microwave oscillator 40, and other configurations and control methods are as follows. Conventionally known techniques can be applied.

Therefore, in the following description, other configurations to which a conventionally known technique can be applied are described in detail with respect to the point of microwave heating the three-dimensional structure 100 that has been three-dimensionally formed by the microwave oscillator 40. In addition, detailed description regarding control will be omitted.

  The microwave oscillator 40 includes a microwave oscillator 42 configured by a magnetron or the like as an electromagnetic wave radiation source, and a microwave irradiated from the microwave oscillator 42 toward the modeling tank 16 in the groove 14 outside the modeling tank 16. And a cover 44 as an electromagnetic wave shielding means made of a material such as a metal for preventing propagation to the outside.

  The micro-oscillator 42 irradiates microwaves having a frequency of 300 MHz to 300 GHz.

  Further, the cover 44 is formed in a funnel shape having a rectangular opening 44a whose lower side is open toward the end. The opening 44 a is dimensioned so that the opening 16 a on the upper surface of the modeling tank 16 can be completely shielded when the modeling tank 16 moves below the microwave oscillator 40.

  Note that the lower end portions of the opening 44 a of the cover 44 on the front side and the rear side in the X-axis direction are notched so as not to hinder the modeling tank 16 from moving to the lower side of the microwave oscillator 40. A portion 44c is provided.

  The size of the notch 44c is set so that the notch 44c and the upper surface 16b of the modeling tank 16 are slidably contacted when the modeling tank 16 is moved below the microwave oscillator 40. ing.

  Further, lower end portions 44 d on the right and left sides in the Y-axis direction of the opening 44 a of the cover 44 are fixed so as to come into contact with the upper surface 12 a of the base portion 12.

Therefore, when the modeling tank 16 moves below the microwave oscillator 40, the modeling tank 16 is shielded from the outside by the cover 44, and is oscillated from the microwave oscillator 42 toward the modeling tank 16. Microwaves are prevented from propagating outside.

  As described above, in the three-dimensional modeling apparatus 10, when the three-dimensional modeling of the three-dimensional model 100 in the modeling tank 16 is completed, the modeling tank 16 is moved to the lower side of the microwave oscillation device 40, and the microwave oscillation device is obtained. Forty micro-oscillators 42 are driven. Thereby, the process which microwave-heats the three-dimensional structure 100 in the modeling tank 16 is performed.

  At this time, since the modeling tank 16 is shielded from the outside by the cover 44, the microwave irradiated from the micro oscillator 42 does not leak to the outside.

  Note that the microwave heating process of the three-dimensional structure 100 by the microwave oscillator 40 may be automatically started after the three-dimensional structure of the three-dimensional structure 100 is completed, or an operator may You may make it start at arbitrary timings by operating an operation panel (not shown).

The intensity and irradiation time of the microwave oscillated by the microwave oscillator 40 are set so that the operator can set an arbitrary intensity and irradiation time by operating an operation panel (not shown). It is also possible to calculate the size of the three-dimensional structure and the amount of binder used from various data of the three-dimensional structure to be manufactured, and automatically calculate the appropriate intensity and irradiation based on these calculation results. You may make it set time.

  When the microwave heating of the three-dimensional structure 100 by the microwave oscillator 40 is completed, the modeling tank 16 is moved to the front side in the X-axis direction, and the modeling layer 16 is arranged at the position shown in FIG.

An operator takes out the three-dimensional structure 100 heated by the microwave from the modeling layer 16 and performs the next process such as an operation of removing the powder material adhering to the three-dimensional structure 100.

  That is, the entire three-dimensional structure 100 can be warmed by microwave heating on the three-dimensional structure 100, and hardening of a powder material such as resin powder can be promoted. The strength can be reliably increased.

Therefore, even if the three-dimensional structure 100 using the powder material is a powder in which a ceramic material powder such as aluminum oxide and a resin powder are blended, it is taken out from the modeling layer 16 after microwave heating, and time is taken. It becomes possible to immediately shift to the next process such as an operation of removing the powder material adhering to the three-dimensional structure 100 immediately.

  In addition, if warm air is blown out during the modeling of the three-dimensional structure, the modeling layer formed by drying warps and deforms, causing a problem.

  However, in the three-dimensional modeling apparatus 10 according to the present invention that performs microwave heating after the completion of the three-dimensional modeling, there is no possibility of causing problems due to deformation during the modeling of the three-dimensional modeled object, and the outside of the three-dimensional modeled object. By heating the whole including the inside and the microwave, the strength can be increased in a short time.

For example, according to an experiment result by the present inventor, a microwave having a frequency of 300 MHz and an output of 200 W is applied to a three-dimensional structure immediately after the completion of the three-dimensional modeling using a powder material by mixing a powder of ceramic material and a resin powder. Was irradiated for 1 minute, the strength could be increased more than when the three-dimensional structure immediately after the completion of the three-dimensional structure was left for several hours.

  As described above, in the three-dimensional modeling apparatus and the three-dimensional modeling method according to the above-described embodiment, the whole three-dimensional structure is warmed by microwave heating using a microwave after the three-dimensional structure is formed. By promoting the curing of the three-dimensional structure, the initial strength of the three-dimensional structure is increased.

As a result, even if it is a three-dimensional structure using a powder material in which a powder of a ceramic material such as aluminum oxide and a resin powder is blended, it is immediately converted into the three-dimensional structure without taking time after the preparation. It is possible to promptly move to the next step such as an operation of removing the adhering powder material, and the manufacturing operation of the three-dimensional structure is not delayed.

  The embodiment described above may be modified as shown in the following (1) to (5).

  (1) The present invention is not limited to the three-dimensional modeling apparatus and the three-dimensional modeling method having the configuration shown in the above-described embodiment, but is also a three-dimensional modeling apparatus and a three-dimensional modeling method using a powder fixing lamination method (binder jetting method). If it is, it can apply to the 3D modeling apparatus and 3D modeling method of what kind of composition.

  (2) In the above-described embodiment, the microwave oscillating device 40 is fixed to the upper surface 12a of the base portion 12. However, the present invention is not limited to this.

  For example, the microwave oscillation device 40 may be provided with a lifting mechanism. When the microwave oscillating device 40 is provided with an elevating mechanism, the microwave oscillating device 40 is raised by the elevating mechanism after irradiating the three-dimensional structure 100 in the modeling layer 16 with microwaves, so that the third order can be obtained. The original model 100 can be taken out from the modeling layer 16.

  In addition, the lower end 44d on either the right side or the left side in the Y-axis direction of the opening portion 16a of the cover 44 and the upper surface 12a of the base portion 12 are released, and the other lower end portion 44d. And the upper surface 12a of the base portion 12a may be connected by a hinge so that the cover 44 can be opened and closed with the hinge as a fulcrum. If it does in this way, after irradiating the three-dimensional structure 100 in the modeling layer 16 with a microwave, the cover 44 is opened with the hinge as a fulcrum, so that the three-dimensional structure 100 can be taken out from the modeling layer 16 on the spot. become able to.

  (3) In the above-described embodiment, the intensity and irradiation time of the microwave irradiated by the microwave oscillator 40 are based on the size of the three-dimensional structure to be three-dimensionally formed and the amount of binder used. Although it has been described that it may be determined, it is needless to say that the present invention is not limited to this.

  The intensity and irradiation time of the microwave irradiated by the microwave oscillator 40 may be set as appropriate in consideration of the powder material to be three-dimensionally shaped.

  (4) In the above-described embodiment, the case where the microwave oscillator 42 is used as the electromagnetic wave radiation source and the microwave of the frequency of 300 MHz to 300 GHz is irradiated as the electromagnetic wave has been described, but the present invention is not limited to this. Of course.

  For example, a radio wave oscillator may be used as the electromagnetic wave irradiation source, and a radio wave having a frequency of 30 MHz to 300 MHz may be irradiated as the electromagnetic wave.

  Moreover, an infrared irradiator is used as an electromagnetic wave irradiation source, and an ultra far infrared ray having a frequency of 300 GHz to 12 THz is used as an electromagnetic wave, a far infrared ray having a frequency of 12 THz to 75 THz is used as an electromagnetic wave, and a far infrared ray having a frequency of 75 THz to 400 THz is applied as an electromagnetic wave. You may do it.

  Further, the electromagnetic wave irradiation source may be one that irradiates an electromagnetic wave in any one of the frequency bands with a fixed oscillation frequency, or has a variable oscillation frequency and an appropriate frequency band. What irradiates electromagnetic waves may be used.

  Also, a plurality of electromagnetic wave irradiation sources that irradiate electromagnetic waves of different frequency bands are provided, and any one of the plurality of electromagnetic wave irradiation sources is driven to selectively irradiate electromagnetic waves of a desired frequency band. Alternatively, a plurality of electromagnetic wave irradiation sources may be driven to simultaneously irradiate electromagnetic waves in a plurality of frequency bands.

  For example, although the above-mentioned radio wave has a long wavelength and has low energy concentration, it is suitable for heating a three-dimensional structure deeply.

  On the other hand, since the microwave has a shorter wavelength than the radio wave, the attenuation on the surface of the three-dimensional structure is large, which is suitable for heating the surface of the three-dimensional structure.

  Depending on the difference in action between the radio wave and the microwave, the electromagnetic wave irradiation source may irradiate only one of the radio wave and the microwave, or after irradiating the radio wave, the microwave For example, an electromagnetic wave in an appropriate frequency band may be applied at an appropriate timing.

  (5) You may make it combine suitably the embodiment shown above and the modification shown in said (1) thru | or (4).

  The present invention can be used for a powder fixed lamination type three-dimensional modeling apparatus.

  DESCRIPTION OF SYMBOLS 10 3D modeling apparatus, 12 base part, 14 groove part, 16 modeling tank, 18 storage tank, 20 support part, 22 storage tank support rail, 24 storage tank, 24a opening part, 26 roller support part, 28 roller, 30 discharge Head, 40 Microwave oscillator, 42 Microwave oscillator, 44 Cover, 100 Three-dimensional structure

Claims (6)

Based on the image data about the cross-sectional shape of the three-dimensional structure, the powder material is hardened to the powder layer made of the powder material formed in the modeling tank to produce the three-dimensional structure. In the three-dimensional modeling apparatus that
Equipped with electromagnetic wave irradiation means for irradiating electromagnetic waves to the three-dimensional modeled object,
The electromagnetic wave irradiation means includes
An electromagnetic wave irradiation source for irradiating the three-dimensional structure with electromagnetic waves;
A three-dimensional modeling apparatus comprising: a shielding unit that covers the three-dimensional model and shields leakage of electromagnetic waves irradiated from the electromagnetic wave irradiation source to the three-dimensional model. The three-dimensional modeling apparatus according to claim 1,
The electromagnetic wave irradiation source irradiates electromagnetic waves in a plurality of frequency bands individually or simultaneously. In the three-dimensional modeling apparatus according to any one of claims 1 and 2,
The three-dimensional modeling apparatus, wherein the powder material is a powder in which a ceramic powder and a resin powder are blended. Based on the image data about the cross-sectional shape of the three-dimensional structure, the powder material is hardened to the powder layer made of the powder material formed in the modeling tank to produce the three-dimensional structure. In the three-dimensional modeling method to
A three-dimensional modeling method characterized by irradiating an electromagnetic wave to a three-dimensional modeled three-dimensional model and heating the whole three-dimensional modeled product by electromagnetic heating to promote curing of the three-dimensional modeled product. In the three-dimensional modeling method according to claim 4,
When irradiating the electromagnetic wave, the electromagnetic wave of a plurality of frequency bands is irradiated individually or simultaneously. In the three-dimensional modeling method according to any one of claims 4 and 5,
The said powder material is the powder which mix | blended ceramic powder and resin powder. The three-dimensional modeling method characterized by the above-mentioned.

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