JP2015202591A - Molding device and molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding device that has good heat energy efficiency and can be reduced in size, and a molding method.SOLUTION: A molding device 1 includes a stage 2, a tape conveying mechanism 6 that conveys a flexible molding material 10 to a molding position on the stage 2, a hot air blowing mechanism 7 that blows a heated gas to a tip portion of the molding material 10 conveyed to the molding position, and a moving mechanism 4 that relatively moves the molding position to the stage.

Description

  The present invention relates to a modeling apparatus and a modeling method.

Conventionally, a modeling apparatus (so-called 3D printer) that generates a three-dimensional modeled object based on input data is known (see, for example, Patent Document 1).
The apparatus described in Patent Document 1 includes a substrate and a dispensing head, and these substrate and dispensing head are relatively movable. A solid rod, which is a modeling material, is supplied to the dispensing head, the solid rod is heated to the melting point in the dispensing head, and is dispensed from the nozzle of the dispensing head in a flowing state.

Japanese Patent Laid-Open No. 3-158228

  By the way, in an apparatus as described in Patent Document 1, a solid rod (modeling material) supplied into a dispensing head is melted, and a molten material is dispensed at a predetermined position to form a three-dimensional structure. . In such a configuration, it is necessary to reliably melt the modeling material, and there is a problem that the configuration of the heating unit is increased. Further, since the amount of heat necessary for melting is increased, energy efficiency is also deteriorated. Further, since it is necessary to extrude the modeling material in a molten state, there is a problem that the heating time for complete melting becomes longer, and maintenance such as cleaning becomes complicated if the molten processed material remains in the nozzle.

  An object of the present invention is to provide a modeling apparatus and a modeling method that have good thermal energy efficiency and can be miniaturized.

  The modeling apparatus of the present invention includes a feed mechanism that transports a flexible modeling material to a modeling position on the stage, a hot air spray mechanism that blows a heated gas to the tip of the modeling material that is transported to the modeling position, And a moving mechanism for moving the modeling position relative to the stage.

In this invention, modeling material is conveyed to the modeling position on a stage, for example, the front-end | tip part of the conveyed modeling material is fuse | melted with the heating gas supplied from a hot air blowing mechanism. Thereby, only the required part of modeling material can be fuse | melted, and the fuse | melted modeling material can be laminated | stacked on a modeling position. And the modeling position with respect to a stage is moved by a moving mechanism, the lamination position of modeling material is changed one by one, and the modeling object of a desired shape can be modeled by repeating said modeling processing.
In addition, the modeling position on the stage in the present invention includes not only the predetermined position on the stage as the modeling position but also the predetermined position in the modeled object modeled on the stage as the modeling position.
In such this invention, what is necessary is just to spray a heated gas locally on the modeling position of the front-end | tip part of modeling material, and it is not necessary to fuse | melt all the modeling material. Therefore, for example, compared with the structure which extrudes the modeling material of a molten state, the required thermal energy is less, the time for heating gas can also be shortened, and energy efficiency is good. Further, the apparatus can be downsized without requiring a large heating mechanism for melting the modeling material. Furthermore, since the molten modeling material does not remain in the modeling apparatus, cleaning or the like for removing the residual material is unnecessary, and maintenance is facilitated.

In the modeling apparatus of the present invention, the modeling material is preferably a tape-shaped material having a rectangular cross section.
In the present invention, a tape-shaped modeling material is used. In a modeling material having a circular cross section or an elliptical cross section, the thickness dimension varies depending on the position, and the thickness of the modeling material stacked at the modeling position varies. On the other hand, since the thickness dimension is uniform in the tape-shaped material having a rectangular cross section, the thickness dimension when laminated at the modeling position is also uniform, and a modeled object with high accuracy can be modeled.
Further, the modeling material that is sequentially sent out is usually stored by being wound around a cylindrical core (bobbin), but when a modeling material having a circular cross section or an elliptical cross section is wound around the bobbin, as described above. Since the cross-sectional thickness dimension of the modeling material having a circular cross section or an elliptical cross section varies depending on the position, a gap is generated even when the modeling material is wound around the bobbin so as to be adjacent to each other. On the other hand, when a tape-shaped modeling material is wound around a bobbin, the tape surface and the back surface of the tape can be closely attached and wound around the bobbin. The volume occupancy can be improved as compared with the case of using. That is, as compared with the case of using a modeling material having a circular cross section or an elliptical cross section, the space for storing the modeling material can be reduced, and the apparatus can be further miniaturized.

In the modeling material of the present invention, the modeling material preferably has an aspect ratio of 10 or more in a tape thickness dimension and a tape width dimension in a cross-sectional view.
In the present invention, the aspect ratio (tape width dimension / tape thickness dimension) is 10 or more. Here, when the aspect ratio is less than 10, it can be considered that the tape thickness dimension is too large with respect to the tape width dimension and the tape width dimension is too small with respect to the tape thickness dimension. In the former case, the flexibility of the modeling material is insufficient, and the conveyance handling property of the modeling material by the feeding mechanism is deteriorated. In the latter case, twisting or the like occurs, and conveyance handling properties deteriorate. On the other hand, by setting the aspect ratio to 10 or more as described above, the conveyance efficiency of the flexible modeling material can be improved, and the modeling material can be efficiently conveyed to a desired modeling position. Can do.

The modeling apparatus of this invention WHEREIN: It is preferable that the said hot air spray mechanism is provided with the rocking | swiveling part which moves the spray position of the said heating gas along the tape width direction of the said modeling material.
In the present invention, only a part of the tape-shaped modeling material is melted by blowing a heated gas to a part of the tape-shaped modeling material in the width direction. At this time, the hot air spraying mechanism is provided with a swinging portion, whereby the hot air spraying position can be easily moved in the tape width direction. Moreover, a tape-shaped modeling material can be used without waste. Furthermore, in the case of moving the spray position of the heated gas along the length direction (conveyance direction) of the modeling material, the heating gas is sprayed on the modeling material feed mechanism side (upstream side in the conveyance direction), which is not intended. Melting of the modeling material at the location can occur. On the other hand, when the spray position is moved in the width direction, melting of the modeling material on the upstream side in the transport direction can be suppressed, and a modeled object with high accuracy can be modeled.

The modeling apparatus of this invention WHEREIN: It is preferable that the said hot air spraying mechanism sprays the inert gas heated as the said heating gas on the said modeling material.
In the present invention, since the inert gas is blown onto the modeling material, the modeling material does not deteriorate due to a chemical change or the like, and a high-quality modeled object can be modeled. For example, when a metal material is used as the modeling material, it is conceivable that the modeled object is altered by oxidation or the like when heated air is blown, but in the present invention, metal oxidation can be prevented by an inert gas.

The modeling apparatus of this invention WHEREIN: It is preferable that the said hot air spraying mechanism sprays the said heating gas on the said modeling material in inert gas atmosphere.
In the present invention, the modeling material is heated and melted by the heated gas in an inert gas atmosphere. Therefore, as in the case of the above-described invention, the modeling material does not change due to a chemical change or the like, and a high-quality model can be modeled.

In the modeling apparatus of the present invention, it is preferable that the hot air spray mechanism sprays the dehumidified heated gas onto the modeling material.
In the present invention, the dehumidified heated gas is sprayed onto the modeling material. For this reason, the inconvenience that a modeling material chemically reacts with water and changes in quality can be prevented, and a high-quality modeling thing can be modeled.

The modeling apparatus of this invention WHEREIN: It is preferable that the said hot air spraying mechanism sprays the said heating gas from the direction which inclines with respect to the normal line direction of the said stage.
In the present invention, the heated gas is blown obliquely with respect to the normal direction of the stage. In general, when the heated gas is blown from the normal direction of the stage, for example, the heated gas stays in the vicinity of the modeling position, or the gas that heated the modeling position of the modeling material flows to the other part of the modeling material. Others may be heated and melted. On the other hand, in the present invention, by blowing the heated gas from an oblique direction, the retention of the heated gas can be suppressed, the inconvenience that the modeling material other than the necessary melting point is melted can be suppressed, and a highly accurate modeling material can be obtained. Can be modeled.

The modeling apparatus of this invention WHEREIN: It is preferable that the said hot air spraying mechanism sprays the said heating gas toward the downstream from the upstream of the conveyance direction of the said modeling material.
In this invention, heated gas is sprayed toward the downstream from the upstream with respect to the conveyance direction of modeling material. In such a configuration, the heated gas does not melt the modeling material on the upstream side in the conveyance direction, and only the modeling material at a desired modeling position can be accurately melted. In addition, when the modeling material is laminated on a modeled object that has already been modeled on the stage, it is preferable to soften or melt the surface of the modeled object in order to ensure adhesion with the surface of the modeled object. . In the present invention, the heated gas that has flowed downstream can heat or soften the surface of the modeled object, and a new modeling material can be melted and laminated thereon. Therefore, the adhesion between the modeling material and the modeled object is improved, and a modeled object having high durability can be modeled.

The modeling apparatus of this invention WHEREIN: It is preferable that the said modeling material is comprised with the metal.
Since the present invention uses a metal material as a modeling material, a high-strength modeling object can be modeled.

The modeling apparatus of this invention WHEREIN: It is preferable that the said modeling material is made incombustible or incombustible.
In the present invention, the metal modeling material is subjected to flame retardant treatment or non-flammability treatment. Therefore, when the heated gas is sprayed, the metal material is less likely to cause a chemical reaction due to combustion, and a high-quality model can be modeled.

The modeling apparatus of this invention WHEREIN: It is preferable that the said modeling material is comprised with resin.
In the present invention, a resin material is used as the modeling material. The resin material has a lower melting point than the metal material, and the temperature of the heated gas can be lowered. Therefore, the structure of the hot air blowing mechanism can be made simpler, and the downsizing of the apparatus can be further promoted.

The modeling method of the present invention transports a flexible modeling material to a modeling position on a stage, blows a heated gas to the tip of the modeling material conveyed to the modeling position, and melts it to the modeling position. The modeling material is formed by stacking the modeling material and changing the stacking position of the modeling material by moving the modeling position.
In the present invention, similarly to the above-described invention, the modeling material is transported to the modeling position on the stage, and the transported modeling material is melted by blowing a heated gas to be stacked at the modeling position. By repeating this by moving the modeling position, a modeled object having a desired shape can be modeled. Further, since it is only necessary to blow a heated gas on the modeling position of the modeling material, for example, at the front end portion, and it is not necessary to melt all of the modeling material, for example, compared to a configuration in which the modeling material in the molten state is extruded, the required thermal energy Therefore, energy efficiency can be improved. Further, the apparatus can be downsized without requiring a large heating mechanism for melting the modeling material.

The figure which shows schematic structure of the modeling apparatus of this embodiment. The perspective view which shows schematic structure of the modeling material used by this embodiment. Sectional drawing which shows schematic structure of the cassette of this embodiment. Sectional drawing which shows schematic structure of the gas supply part of this embodiment. The figure which shows the front-end | tip shape of the nozzle in a heat-resistant syringe. The figure which shows the structural example of the rocking | swiveling part for scanning a gas supply part in a tape width direction. The flowchart which shows the modeling method (modeling process) of the molded article using the modeling apparatus of this embodiment. The perspective view which shows the process in which a molded article is formed by modeling process in this embodiment. Sectional drawing which shows the structure of the gas supply part in other embodiment. The perspective view which shows the storage structure of the modeling material in other embodiment. Sectional drawing which shows the structure of the sending roller at the time of using the thread-shaped modeling material in other embodiment.

[First embodiment]
Hereinafter, the modeling apparatus of 1st embodiment which concerns on this invention is demonstrated based on drawing.
[Schematic configuration of modeling equipment]
FIG. 1 is a diagram illustrating a schematic configuration of a modeling apparatus according to the present embodiment.
As shown in FIG. 1, the modeling apparatus 1 (laminated modeling apparatus) includes a stage 2, a modeling head 3, a moving mechanism 4, and a controller 5.
The modeling apparatus 1 is an apparatus that models a three-dimensional structure by stacking modeling materials on the stage 2 in accordance with the cross-sectional shape of the modeling data input from the data output device such as a personal computer to the controller 5. is there. Specifically, the controller 5 controls the movement mechanism 4 based on the modeling data to move the modeling head 3 to a predetermined modeling position P. Then, the controller 5 controls the modeling head 3 to melt and laminate the modeling material 10 at the modeling position P on the stage 2 (including the modeling position P of the modeled object on the stage 2).
Hereinafter, each configuration will be described in detail.

[Configuration of stage 2]
The stage 2 is a pedestal for modeling a modeled object, and includes, for example, a plane on which the modeled object is placed.

[Configuration of modeling head 3]
The modeling head 3 is provided so as to be movable with respect to the stage 2 by a moving mechanism 4 and includes a tape transport mechanism 6 and a hot air blowing mechanism 7 as shown in FIG.
[Configuration of Tape Transport Mechanism 6]
The tape transport mechanism 6 constitutes the feed mechanism of the present invention, and transports the modeling material 10 to the modeling position P on the stage 2. The tape transport mechanism 6 includes a cassette 61 that stores the modeling material 10 and a delivery unit 62 that transports the modeling material 10 supplied from the cassette 61 to a predetermined modeling position P on the stage 2.

(Configuration of modeling material 10)
Here, the modeling material 10 stored in the cassette 61 will be described.
FIG. 2 is a perspective view showing a schematic configuration of the modeling material 10 used in the present embodiment.
As shown in FIG. 2, the modeling material 10 has a flat cross section with a short side (tape thickness dimension) a and a long side (tape width dimension) b, and a thin-walled shape with an aspect ratio (b / a) of 10 or more ( Tape). Here, when the aspect ratio is less than 10, the conveyance handling property of the modeling material 10 is deteriorated. That is, when the tape thickness dimension a is increased with respect to the tape width dimension b, the conveyance efficiency of the delivery roller pair 621 and the drive roller pair 622 described later decreases due to the decrease in flexibility of the modeling material 10, and handling properties during conveyance are reduced. (Ease of transport) decreases. Moreover, in this embodiment, the surface of the modeling material 10 on the stage 2 side (tape back surface) and the upper surface of the modeling object at the modeling position P (or the surface of the stage 2) using the flexibility of the modeling material 10 Abut. Therefore, when it does not have sufficient flexibility, a gap is generated between the upper surface of the modeling object (or the surface of the stage 2) and the tape back surface of the modeling material 10 at the modeling position P, and the modeling material 10 is melted. Then, the adhesiveness when laminated is reduced. Further, even when the tape thickness dimension a is sufficiently small, if the tape width dimension b is small, the modeling material 10 may be twisted during conveyance, and conveyance handling properties are deteriorated.
In contrast, by setting the aspect ratio to 10 or more as described above, the conveyance efficiency of the flexible modeling material 10 can be improved, and the modeling material is efficiently conveyed to a desired modeling position. be able to.

Examples of such a modeling material 10 include metals and resins.
When a metal is used as the modeling material 10, the strength of the modeled object obtained by modeling becomes higher than that of the resin. On the other hand, the modeling material 10 needs to be transported to the modeling position P on the stage 2 and is required to be flexible. In the metallic modeling material 10, it is preferable that the tape thickness dimension is a ≦ 0.1 mm in order to ensure the flexibility. When the tape thickness dimension is a> 0.1 mm, the modeling material 10 is difficult to bend, and it is difficult to transport the modeling material 10 to a desired modeling position P during conveyance.
As described above, the tape width dimension b is set in consideration of the transport handling property. When the tape thickness dimension a is 0.1 mm, the tape width dimension is preferably 1 mm or more. Although it depends on the set value of the tape thickness dimension a, the set value of the tape width dimension b is more preferably 5 mm ≦ b ≦ 15 mm. In the tape-shaped modeling material 10 formed in the dimensions a and b as described above, sufficient flexibility can be maintained, and a reduction in handling properties due to twisting or the like can be suppressed.

When using the metal modeling material 10, it is more preferable to use Mg. For example, Mg has a smaller specific gravity than Al or the like (Mg specific gravity is 1.7 with respect to Al specific gravity 2.7), and the modeling material 10 can be reduced in weight.
Further, the metallic modeling material 10 is preferably subjected to a flame retardant treatment or an incombustible treatment so that oxidation does not occur when heated to the vicinity of the melting point. A well-known technique can be used as a flame-retardant treatment or an incombustible treatment.
The metal modeling material 10 as described above can be manufactured in a large amount and at a low cost by cutting one formed by rolling or extruding, for example.

  On the other hand, when resin is used as the modeling material 10, the melting point is lower than that of metal, the gas heating temperature in the hot air blowing mechanism 7 described later can be set low, and the heating mechanism can be further simplified. In the case of using such a resin-made modeling material 10, it is preferable that the tape thickness dimension is a ≦ 1 mm and the tape width dimension is 5 mm ≦ b. The resinous modeling material 10 can easily ensure flexibility as compared with metal and can increase the thickness dimension. However, when the tape thickness dimension is a> 1 mm, the flexibility is insufficient and the handling property is deteriorated. Further, when the tape width dimension is 5 mm> b, twisting is likely to occur, and handling properties are deteriorated. From the above, it is preferable to configure the modeling material 10 so that the aspect ratio becomes 10 or more in the range of the dimensions a and b as described above.

(Configuration of cassette 61)
Next, the cassette 61 of the tape transport mechanism 6 will be specifically described.
FIG. 3 is a cross-sectional view showing a schematic configuration of the cassette 61 of the present embodiment.
As shown in FIG. 3, the cassette 61 includes a case 611, a bobbin 612, and a pinch roller 613.
The case 611 has, for example, a rectangular parallelepiped shape having an internal space, and the bobbin 612, the modeling material 10 wound around the bobbin 612, and the pinch roller 613 are stored therein.
In addition, a delivery port 611A is provided in a part of the case 611 (in this embodiment, a corner of a rectangular parallelepiped), and the modeling material 10 housed inside is taken out from the delivery port 611A.

The bobbin 612 is a shaft-like member, and is rotatably supported on surfaces facing each other in the case 611. One end of the modeling material 10 described above is fixed to the bobbin 612, and the modeling material 10 is wound along the peripheral surface of the bobbin 612. More specifically, the tape-shaped modeling material 10 has a tape back surface (a surface facing the stage 2 when the tape is transported onto the stage 2) on the surface of the modeling material 10 wound around the bobbin 612 ( It is wound concentrically so as to be in close contact with the surface opposite to the back surface of the tape, and is stored in a roll shape.
In such a configuration, for example, the volume occupancy is higher than when a thread-shaped modeling material is wound around the bobbin 612. Therefore, when the thread-shaped modeling material and the tape-shaped modeling material 10 of the present embodiment are wound on the bobbin by the same amount, when the modeling material 10 of the present embodiment is used, the thread-shaped modeling material is used. Compared to the case, the volume can be reduced, the size of the cassette 61 can be reduced, and the number of turns on the bobbin 612 is reduced, so that the manufacturing efficiency is also improved. Further, in the case where the size of the cassette 61 is defined, when the tape-shaped modeling material 10 of the present embodiment is used, the volume occupancy is large, so that the inside of the cassette 61 is larger than when the thread-shaped modeling material is used. Thus, it becomes possible to store more modeling material 10.

  The pinch roller 613 is provided in the vicinity of the delivery port 611A, and the modeling material 10 guides the conveyance direction. A pair of pinch rollers 613 is provided, and the modeling material 10 is sandwiched between the pair of pinch rollers 613 and guided to the delivery port 611A. Moreover, the modeling material 10 is inserted | pinched by the pinch roller 613, the slackness of the wound modeling material 10 can be suppressed, and the runability (conveyance) of the modeling material 10 sent out from the delivery port 611A improves.

  Further, the cassette 61 is provided with positioning portions such as locking pins and guide projections (not shown) on the exterior portion of the case 611, for example, and by positioning these positioning portions at predetermined positions in the modeling head 3, the cassette 61 61 can be attached to the modeling head 3.

(Configuration of sending unit 62)
As shown in FIG. 1, the delivery unit 62 sends the modeling material 10 provided from the cassette 61 to the modeling position P on the stage 2.
The delivery unit 62 includes a delivery roller pair 621 configured by a pair of delivery rollers 621A and 621B, a drive roller pair 622 configured by a drive roller 622A and a driven roller 622B, and a guide unit 623. In this embodiment, an example in which one delivery roller pair 621 is provided is shown. However, two or more delivery roller pairs 621 may be provided, the delivery roller pair 621 is not provided, and only the drive roller pair 622 is provided. It is good. Furthermore, although an example in which only one driving roller pair 622 is provided is shown, a configuration in which two or more driving roller pairs are provided may be used.

  The pair of delivery rollers 621 sandwiches the modeling material 10 by the delivery rollers 621A and 621B and guides the conveyance of the modeling material 10. Here, the pair of delivery rollers 621 conveys the modeling material 10 while curving the modeling material 10 to the opposite side to the curl of the modeling material 10 delivered from the cassette 61 (winding direction around the bobbin 612). . Thereby, it becomes possible to correct the curl of the modeling material 10.

The drive roller pair 622 draws the modeling material 10 and sends it out toward the modeling position P. Specifically, the drive roller pair 622 includes a drive roller 622A that is rotationally driven by a drive amount of a motor or the like, and a driven roller 622B that follows the drive of the drive roller 622A (the motor drive force is not transmitted). . The driving roller 622A and the driven roller 622B can transport the modeling material 10 at a constant speed.
Here, the driving roller 622A is preferably in contact with the tape back surface of the modeling material 10. Thereby, the said modeling material 10 is urged | biased by the driving roller 622A with the curl of the modeling material 10, the slip at the time of conveyance etc. can be suppressed, and conveyance efficiency can be improved.
The drive roller 622A may be in contact with the tape surface. Moreover, it is good also as a structure which drives both a pair of roller which comprises the drive roller pair 622 as a drive roller. In this case, the curl of the modeling material 10 can be more reliably corrected by slightly increasing the rotational speed of the drive roller in contact with the tape back surface with respect to the drive roller in contact with the tape surface.

For example, the guide portion 623 is configured in a leaf spring shape from a highly durable metal material whose surface is subjected to wear resistance treatment, and includes guide walls (not shown) at both ends along the transport direction.
The guide portion 623 guides the conveyance of the modeling material 10 to the modeling position P on the stage 2 by removing the slack of the modeling material 10 and correcting the conveyance direction of the modeling material 10.
The modeling material 10 guided by the guide portion 623 is biased and brought into contact with the modeling position P by bending, and a portion heated by a hot air blowing mechanism 7 described later is melted and stacked at the modeling position P.

[Configuration of Hot Air Spraying Mechanism 7]
As shown in FIG. 1, the hot air blowing mechanism 7 includes a compressor 71, a gas supply unit 72, and a duct 73.
[Configuration of Compressor 71]
The compressor 71 is a device that has a compression space (not shown) for compressing a gas to a high pressure and supplies the gas to the gas supply unit 72 by the pressure. As the gas, it is preferable to use an inert gas. By using the inert gas, the modeling material 10 can be prevented from being deteriorated when the modeling material 10 is heated.
Further, a dehumidifying agent for removing moisture in the gas is provided inside the compressor 71, and the gas supplied from the compressor 71 is dehumidified. Therefore, even when air is used as the gas, the dehumidified heated air is blown onto the modeling material 10, and the reaction between the modeling material 10 and water can be suppressed.

The compressor 71 is connected to the duct 73, and the air sucked by the duct 73 is introduced into the compression space.
In this embodiment, when an inert gas is used as the gas, it is preferable to maintain the stage 2 on an inert gas atmosphere. Specifically, at least the stage 2, the modeling head 3, and the moving mechanism 4 of the modeling apparatus 1 are stored in a sealed modeling chamber, and the modeling chamber is maintained under an inert gas atmosphere. As a result, the inert gas is sucked by the duct 73, and the inert gas can always be sprayed onto the modeling material 10.
When air is used as the gas, it is not necessary to maintain the atmosphere in an inert gas atmosphere, and the modeling chamber may not be provided.

(Configuration of gas supply unit 72)
The gas supply unit 72 heats and supplies the gas supplied from the compressor 71 to the modeling position P. Here, the gas supply unit 72, as from the upstream side toward the downstream side of the build material 10 heated gas blown from the gas supply unit 72 is conveyed along the conveying direction, the conveying direction D ₁ and the law In a plane including the line direction D ₂ , the stage 2 is disposed at a predetermined angle θ with respect to the normal direction D ₂ of the stage 2. As the inclination angle θ, for example, 0 ° <θ ≦ 45 ° is preferable. Thereby, the heating gas does not go to the upstream side of the modeling material 10, and the disadvantage that the modeling material 10 other than the modeling position P is melted can be avoided.

FIG. 4 is a cross-sectional view illustrating a schematic configuration of the gas supply unit 72.
As shown in FIG. 4, the gas supply unit 72 includes a heat-resistant syringe 721, a core 722, a heater coil 723, a temperature sensor 724, and the like.
The heat-resistant syringe 721 is formed in a cylindrical shape such as a cylindrical shape. The heat-resistant syringe 721 is preferably configured using, for example, heat-resistant glass or heat-resistant metal. In addition, it is preferable that the outer peripheral surface of the heat-resistant syringe 721 is covered with a heat insulating material in order to reduce heat diffusion and prevent burns.
The base end portion of the heat-resistant syringe 721 is connected to the compressor 71, and the gas supplied from the compressor 71 is introduced into the heat-resistant syringe 721 from the base end portion. The tip of the heat-resistant syringe 721 (the end facing the stage 2) constitutes a nozzle 721A formed so that the diameter of the cylinder decreases toward the tip, and the gas heated from the tip of the nozzle 721A Released.

For example, a ceramic core 722 is disposed on the central axis of the heat-resistant syringe 721, and a heater coil 723 is wound around the core 722. The heater coil 723 is heated by voltage application under the control of the controller 5 and heats the gas introduced into the heat-resistant syringe 721. As the heater coil 723, for example, a heating wire of nickel chrome or iron chrome aluminum can be used, and high-temperature heating at 1000 ° C. or higher is possible. Therefore, even when a metal material is used as the modeling material 10, melt lamination can be performed.
The temperature sensor 724 is provided at the tip of the core 722 on the nozzle 721A side, and measures the temperature of the heated gas discharged from the nozzle 721A. The temperature sensor 724 is electrically connected to the controller 5 and outputs a detection signal corresponding to the measured temperature to the controller 5. As a result, the controller 5 can control the voltage applied to the heater coil 723 based on the measured temperature to release the heating gas having a desired temperature from the nozzle 721A.

FIG. 5 is a diagram showing the tip shape of the nozzle 721A in the heat-resistant syringe 721. As shown in FIG.
The tip shape of the nozzle 721A is preferably a shape in which turbulent flow or the like is unlikely to occur in the discharged heated gas and the heated gas is appropriately blown to a desired modeling position P.
As such an opening shape of the nozzle 721A, for example, a circular shape as shown in FIG. 5A or an elliptical shape as shown in FIG. 5B can be exemplified.
In the nozzle shape as shown in FIG. 5A, the heated gas can be locally blown to a part of the tape-shaped modeling material 10 in the tape width direction, and a modeled object can be formed with high accuracy. It becomes. In this case, the opening diameter dimension A is preferably set to 0.05 mm ≦ A ≦ 2 mm, for example.
On the other hand, in the case of the nozzle shape as shown in FIG. 5B, for example, it is possible to spray a heated gas over a wide range of the modeling material 10, which is suitable for modeling a modeled object at a high speed. In this case, if the short diameter dimension of the nozzle opening is B and the long diameter dimension is C, it is preferable to set, for example, 0.1 mm ≦ B ≦ 1 mm and C ≦ 10B.

By the way, in this embodiment, a part in the tape width direction is melted by spraying a heated gas to a part of the tape width dimension with respect to the tape-shaped modeling material 10, and a modeled object is modeled. In this case, by making the gas supply unit 72 scannable in the tape width direction, the tape-shaped modeling material 10 can be consumed without waste.
FIG. 6 shows a configuration example of a swinging unit for scanning the gas supply unit 72 in the tape width direction.
In the example of FIG. 6, a swinging part 725 is provided at the base end part of the gas supply part 72. The swinging portion 725 in a plan view as viewed from the normal direction D ₂ of the stage 2, parallel to the tape feeding direction D ₁ at the shaping position P, and the normal line of the stage 2 in a plan view as viewed from the tape width direction and a pivot shaft 726 that is inclined with respect to the direction _{D 2.} The swing shaft 726 is pivotally supported by the main body (not shown) of the modeling head 3 so that the heat-resistant syringe 721 can swing along the tape width direction orthogonal to the tape transport direction. As the swinging operation of the gas supply unit 72 by the swinging unit 725, for example, the swinging shaft 726 is swung by transmitting power from a power source such as a stepping motor. By controlling the operation of the power source by the controller 5, the heated gas can be blown to a predetermined position in the tape width direction.
In addition, as a rocking | fluctuation part which rock | fluctuates the gas supply part 72, it is not limited above, Any other structure may be used. For example, in the modeling head 3, the gas supply unit 72 may be configured to be movable in the tape width direction, and may be configured to be moved back and forth in the tape width direction by a separately provided moving mechanism.

(Configuration of duct 73)
The duct 73 is provided with a gas inlet in the vicinity of the modeling position P, and is discharged from the gas supply unit 72 and collects the heated gas after being sprayed on the modeling material 10.
In the present embodiment, since the gas supply unit 72 blows the heated gas from the upstream side in the transport direction toward the downstream side, the duct 73 is preferably disposed on the downstream side of the gas supply unit 72.
The duct 73 is connected to the compressor 71 and sends the sucked heated gas to the compressor 71. In such a configuration, the heated gas is circulated and utilized by the compressor 71, the gas supply unit 72, and the duct 73, and energy efficiency is improved.

  Here, the flow path cross-sectional area of the suction port of the duct 73 is preferably larger than the opening area of the nozzle 721 </ b> A of the gas supply unit 72. In such a configuration, more gas than the sprayed heated gas can be collected in the duct 73, and the collection efficiency of the heated gas can be improved.

[Configuration of moving mechanism 4]
The moving mechanism 4 moves the modeling head 3 with respect to the stage 2 in the X-axis, Y-axis, and Z-axis directions, and transports the modeling material 10 of the tape transport mechanism 6 in the modeling head 3 (modeling position). P) and the hot gas spraying position of the hot air spraying mechanism 7 are moved to a desired position. That is, the moving mechanism 4 moves the modeling position P with respect to the stage.
As a specific configuration, for example, a column movable on a Y guide laid along the Y-axis direction, a slider provided with an X guide provided on the column and extending in the X-axis direction, and moved along the X guide An example is a configuration in which a ram having a Z guide along the Z direction is provided and the modeling head 3 is provided so as to be movable along the Z guide of the ram. Moreover, it is good also as a structure etc. which can move the modeling head 3 in a three-dimensional space by connecting a some arm member and controlling the connection angle of an arm.
Moreover, in this embodiment, although the structure which moves the modeling head 3 with respect to the stage 2 by the moving mechanism 4 is illustrated, it is not limited to this, For example, as a structure etc. which move the stage 2 with respect to the modeling head 3 Good. Furthermore, the stage 2 may be moved along the Z direction, and the modeling head 3 may be moved along the XY axes.

[Configuration of controller 5]
The controller 5 includes a storage unit such as a memory, an arithmetic circuit with a CPU, and the like, and controls the overall operation of the modeling apparatus 1. Various programs and various data for controlling the modeling apparatus 1 are recorded in the storage circuit. The arithmetic circuit of the controller 5 functions as a data acquisition unit 51, a movement control unit 52, and a modeling control unit 53 as shown in FIG. 1 by reading and executing a program stored in the storage unit. In the present embodiment, each functional configuration is an example realized by cooperation of an arithmetic circuit that is hardware and a program (software). For example, an integrated circuit (hardware) having each function is combined. It is good also as a structure implement | achieved by this.
For example, the data acquisition unit 51 acquires modeling data from an external device such as a personal computer that is communicably connected to the controller 5. The controller 5 may include a drive device that reads a recording medium, and may directly acquire modeling data from the recording medium mounted on the drive device.
The movement control means 52 controls the movement mechanism 4 based on the modeling data and moves the modeling head 3.
The modeling control unit 53 controls the modeling head 3. Specifically, the modeling control means 53 controls the operation of the drive roller pair 622 of the delivery unit 62, the compressor 71, the gas supply unit 72, and the duct 73, and melts and laminates the modeling material 10 at the modeling position P to form a modeled object. Is shaped.

[Method for Manufacturing Modeled Object by Modeling Apparatus 1]
Next, a modeling method of a modeled object using the modeling apparatus 1 as described above will be described based on the drawings.
FIG. 7 is a flowchart illustrating a modeling method (modeling process) of a modeled object using the modeling apparatus 1 of the present embodiment. FIG. 8 is a perspective view illustrating a process in which a model is formed by the modeling process.
In order to model a modeled object with the modeling apparatus 1, first, the data acquisition means 51 of the controller 5 acquires modeling data (step S1). Specifically, the data acquisition means 51 is recorded on a recording medium such as a CD-ROM or modeling data input from an external device such as a personal computer connected to the controller 5 based on the operation of the operator. Data for modeling, data for modeling acquired via a communication line such as the Internet, and the like are acquired.

Next, the movement control means 52 analyzes the cross-sectional shape of a modeling thing from modeling data, and moves the modeling head 3 to the modeling position P equivalent to a modeling object cross section, as shown in FIG. 8 (step S2).
Specifically, the position of the modeling head 3 is controlled by controlling the moving mechanism 4 so that the tip of the modeling material 10 conveyed by the tape conveyance mechanism 6 is positioned at the modeling position P indicated based on the modeling data. The gas spray position in the tape width direction of the modeling material 10 is set by setting and controlling the swinging part 725.

Thereafter, the modeling control means 53 controls the modeling head 3 and the like, melts and laminates the modeling material 10 at the modeling position P, and forms a modeled object as shown in FIG. 8 (step S3).
Specifically, the modeling control means 53 controls the compressor 71 to introduce gas from the compressor 71 to the gas supply unit 72 so that the flow rate is set in advance.
Further, the modeling control unit 53 refers to the temperature detected by the temperature sensor 724 and applies a voltage to the heater coil 723 so that the detected temperature becomes a temperature near the melting point of the modeling material 10. Thereby, a heating gas having a temperature around the melting point of the modeling material 10 is sprayed from the nozzle 721A to a part of the tip of the modeling material 10 in the tape width direction, and the modeling material 10 is melted and laminated at the modeling position P. The

Thereafter, the modeling control means 53 determines whether or not the modeling processing of the modeled object based on the modeling data is completed (Step S4).
If “No” is determined in step S4, the process returns to step S2 and step S3, and the movement of the modeling head 3 and the melt lamination of the modeling material are repeated.
At this time, the movement control means 52 controls the swing part 725 of the gas supply part 72 to move the heating gas blowing position of the gas supply part 72 along the tape width direction, and moves the moving mechanism 4. The position of the modeling head 3 is controlled so that the spray position of the heated gas becomes the modeling position P based on the modeling data.
In addition, when the modeling material 10 along the tape width direction is melted and laminated, the modeling control unit 53 drives the driving roller 622A of the sending unit 62 to send out the modeling material 10 by a predetermined amount, and the tip portion is moved. Move to modeling position P. Since the modeling material 10 delivered by the delivery unit 62 has flexibility, it is bent by its own weight and is urged against the modeling position P. Thereafter, similarly to step S3, the modeling material 10 is melted and stacked on the modeling position P.
And if it determines with "Yes" in step S4, a modeling process will be complete | finished.

[Operational effects of this embodiment]
The modeling apparatus 1 of this embodiment includes a stage 2 on which a model is modeled, a tape transport mechanism 6 that transports a flexible modeling material 10 to a predetermined modeling position P on the stage 2, and a modeling position P. A hot air blowing mechanism 7 that blows and melts heated gas on the transported modeling material 10 and a modeling head 3 in which the hot air blowing mechanism 7 is incorporated so that the modeling position P is located at a desired position based on modeling data. And a moving mechanism 4 to be moved.
In such a configuration, the conveyance of the modeling material 10 and the supply of the heated gas are performed by separate mechanisms, and only the necessary portions of the modeling material 10 are locally melted with the heated gas. Therefore, for example, compared with the case where the molten modeling material 10 is extruded and laminated | stacked on the modeling position P, the melting amount and melting area (volume) of the modeling material 10 are small, and thermal energy may be small. Therefore, the structure of the heating mechanism (heater coil 723) in the gas supply unit 72 can be reduced in size, and the modeling apparatus 1 can be reduced in size and the manufacturing cost can be reduced.
Moreover, since the modeling material 10 conveyed by the tape conveyance mechanism 6 is urged and brought into contact with the modeling position P and melted at the position, the molten modeling material 10 is melted in the tape conveyance mechanism 6 and the hot air blowing mechanism 7. It does not stick or remain. Therefore, maintenance of the modeling apparatus 1 is also facilitated.

In this embodiment, the modeling material 10 is formed in a tape shape having a rectangular cross section. Since the tape-shaped modeling material 10 has a uniform thickness dimension, a highly accurate modeled object can be modeled without the thickness of the modeling material 10 laminated at the modeling position P changing.
Further, when the modeling material 10 is wound concentrically with the bobbin 612, the gap between the tape back surface and the tape surface can be eliminated, for example, compared to the case where a thread-shaped modeling material is used. Volume occupancy increases. That is, when the same amount of modeling material is stored in the cassette 61, the cassette 61 can be reduced in size as compared with the thread-shaped modeling material. When the size of the cassette 61 is fixed, more modeling material 10 can be wound around the bobbin as compared with the case where a thread-shaped modeling material is used.
In addition, there is a configuration in which powder is used as a modeling material. However, since such a powder is spherical, the volume occupancy becomes small when stored in the cassette 61, as in the case of the thread-shaped modeling material. It also becomes necessary to provide a lid for closing the outlet 611A. On the other hand, in the modeling material 10 of this embodiment, the volume occupation ratio can be made larger than that of the powdered modeling material, and it is not necessary to provide a lid portion on the delivery port 611A, and the handling becomes easy.

  In this embodiment, the aspect ratio (a / b) which is the ratio of the tape thickness dimension a and the tape width dimension b of the tape-shaped modeling material 10 is 10 or more. For this reason, the flexibility of the modeling material 10 can be sufficiently ensured, and deterioration of the transport handling property of the modeling material 10 due to twisting, bending, or the like can be suppressed.

Here, as the modeling material 10 of this embodiment, either metal or resinous can be selected.
When using the metallic modeling material 10, it is possible to model a model with a higher durability than the resinous modeling material 10, and when using the resinous modeling material 10, In comparison, the heating temperature is low, the configuration of the gas supply unit 72 can be further simplified, and further downsizing can be achieved.
Moreover, when using the metal modeling material 10, weight reduction of the modeling material 10 can be achieved by using Mg with small specific gravity, and the modeling object modeled also becomes a lightweight thing. Moreover, when using such a metal, in order to suppress the oxidation reaction by heating, a flame retarding process or an incombustible process is performed. Thereby, the metal oxidation at the time of spraying heated gas can be suppressed effectively, and the quality degradation of the molded article by alteration can be prevented.

  In the present embodiment, the gas supply unit 72 of the hot air blowing mechanism 7 includes the swinging unit 725 and can swing along the tape width direction of the modeling material 10. In such a configuration, when a high-accuracy shaped article is manufactured by spraying heated gas locally on a part in the tape width direction, the spray position of the heated gas can be scanned in the tape width direction. . Therefore, the tape-shaped modeling material 10 can be used without waste.

In the present embodiment, an inert gas is used as the heated gas. By using such an inert gas, it is possible to prevent deterioration of the modeling material 10 when the modeling material 10 is heated, and it is possible to prevent deterioration of the quality of the modeled object due to the deterioration.
A dehumidifying agent is provided in the compressor 71 to dehumidify the gas. Therefore, when using the metal modeling material 10, the chemical reaction by a water | moisture content can be prevented and the quality fall of a molded article can be prevented.

  In the present embodiment, the gas supply unit 72 is provided to be inclined with respect to the transport direction of the modeling material 10 (the normal direction of the stage 2). In such a configuration, it is possible to prevent the disadvantage that the modeling material 10 other than the modeling position P is melted by the sprayed heated gas, and it is possible to manufacture a modeled object with high accuracy.

Under the present circumstances, in this embodiment, heating gas is sprayed toward the downstream from the upstream in the conveyance direction of the modeling material 10. FIG. For this reason, the problem that the modeling material 10 conveyed by the heated gas melts before reaching the modeling position P can be avoided.
Moreover, the surface of the modeling object already model | molded on the stage 2 of the conveyance direction downstream of the modeling material 10 can be heated with heating gas. For this reason, the modeling object surface can be melted (softened), and the adhesion between the modeling material 10 to be newly laminated and the modeling object can be improved.

  In the present embodiment, the opening shape of the nozzle 721A is an ellipse or a circle. For this reason, it is hard to produce a turbulent flow in the flow of the heating gas sprayed from the nozzle 721A, the heating gas can be sprayed with high precision even at a minute spraying position, and a highly accurate modeled object can be modeled.

In the present embodiment, in the gas supply unit 72, a heater coil 723 is wound around the core 722 provided in the cylindrical heat-resistant syringe 721, and the temperature sensor 724 at the tip of the core 722 on the nozzle 721A side is provided. Is provided.
For this reason, the temperature sensor 724 provided in the vicinity of the nozzle 721 </ b> A can detect a more accurate temperature of the heated gas to be sprayed, and the temperature of the heated gas can be accurately controlled to a temperature in the vicinity of the melting point of the modeling material 10.
Further, in the configuration in which the heater coil 723 is wound around the core 722, the heat of the heater coil 723 is difficult to escape from the heat-resistant syringe 721, and the thermal energy efficiency can be improved.

[Other Embodiments]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In the above embodiment, in the gas supply unit 72, the heater coil 723 is wound around the core 722 provided in the heat-resistant syringe 721. However, the present invention is not limited to this. For example, the configuration shown in FIG. May be used. FIG. 9 is a cross-sectional view illustrating another configuration example of the gas supply unit.
That is, as shown in FIG. 9, the heater coil 723 </ b> A may be wound around the inner peripheral wall surface of the heat-resistant syringe 721. In this configuration, the gas from the compressor 71 is heated by passing the inside of the spiral of the heater coil 723 </ b> A arranged in a spiral shape of the heat-resistant syringe 721. Therefore, release of heat of gas can be prevented and gas can be efficiently heated. In such a configuration, it is more preferable to cover the outer peripheral surface of the heat-resistant syringe 721 with a heat insulating material so that the heat of the heater coil 723A does not escape from the heat-resistant syringe 721.

  In the above-described embodiment, the example in which the opening diameter of the nozzle 721A is fixed is shown, but the present invention is not limited to this. For example, a configuration in which the opening diameter of the opening can be changed by combining a plurality of plate-shaped blades to form the opening of the nozzle 721A and moving these plate-shaped blades forward and backward with respect to the central axis of the nozzle 721A (iris). A blade structure).

In the said embodiment, although the structure which makes the gas supply part 72 incline with the predetermined angle (theta) so that heating gas went to the downstream from the conveyance upstream of the modeling material 10 was illustrated, it is not limited to this.
For example, it is good also as a structure etc. which incline the gas supply part 72 so that heating gas goes from the one side of the tape width direction of the modeling material 10 to the other side. Even in this case, the inconvenience of melting the modeling material 10 before the heated gas is conveyed to the modeling position P can be prevented.
Further, when the possibility of melting the modeling material 10 other than the modeling position P is low due to the flow rate of the heated gas blown from the gas supply unit 72, the gas supply unit 72 is not inclined, that is, the normal line of the stage 2 it may be configured to provided along the direction D _2.

  In the above embodiment, the gas supply unit 72 includes the swinging unit 725 and can scan the spray position of the heated gas with respect to the tape width direction of the modeling material 10, but is not limited thereto. For example, in the case where the spraying range of the heated gas extends over the entire tape width of the modeling material 10 or when a thread-shaped modeling material is used, the swinging portion 725 may not be provided.

In the said embodiment, although the example which collect | recovers heated gas by the duct 73 and returns to the compressor 71 was shown, it is not limited to this.
For example, the heated gas recovered by the duct 73 may be discharged to the outside without being circulated to the compressor 71. Further, the duct 73 may not be provided, and the gas may not be collected. In these cases, even when an inert gas is used as the gas, it is not necessary to perform the modeling process in a sealed chamber maintained in an inert gas atmosphere.

  As the modeling material 10, a tape-shaped material having a rectangular cross section with an aspect ratio of 10 or more is illustrated, but the modeling material 10 is not limited thereto. For example, a tape-shaped material having an aspect ratio of less than 10 is used as long as it has sufficient flexibility depending on the material of the modeling material 10 and the conveyance handling property of the modeling material 10 in the tape conveyance mechanism 6 is good. May be.

  In the said embodiment, although the modeling material 10 was set as the structure accommodated in the cassette 61, it is not limited to this. For example, as shown in FIG. 10, the modeling material 10 may be held in a roll shape by winding the modeling material 10 around the shaft core 614. In this case, the mounting hole 615 is provided along the central axis of the shaft core 614, and the shaft core 614 around which the modeling material 10 is wound is formed by, for example, inserting a locking pin provided in the modeling head 3 into the mounting hole 615. Can be attached to the modeling head 3. In addition, by providing the flange portions 616 that hold both end edges of the modeling material 10 in the tape width direction at both ends in the axial direction of the shaft core 614, loosening of the modeling material 10 can be prevented.

In the said embodiment, although the example whose modeling material 10 is a tape-shaped material was shown, you may be comprised, for example in the shape of a thread | yarn. Even in this case, the modeling material can be held by winding the thread-shaped modeling material around the bobbin 612 of the cassette 61 as shown in FIG. 3 or the shaft core 614 shown in FIG. On the other hand, when such a thread-shaped modeling material is used, twisting at the time of conveyance is likely to occur, and conveyance handling properties may deteriorate.
In this case, it is preferable to use rollers 624 </ b> A and 624 </ b> B having a cross-sectional shape as shown in FIG. 11 as the sending roller pair 621 and the driving roller pair 622 of the sending unit 62. The surface of the driving roller 624A is a roller configured by an elastic member having a high friction coefficient such as rubber or elastomer. Further, the driven roller 624B is a roller that is in contact with the thread-shaped modeling material 10A at two points and has a triangular cross-section groove 624B1 into which more than half of the thread-shaped modeling material 10A enters. In such a configuration, stable quantitative conveyance becomes possible by feeding the thread-shaped modeling material 10A to the groove 624B1 with an elastic force while feeding it in the conveyance direction.

  In addition, the specific structure for carrying out the present invention can be appropriately changed to other structures and the like within a range in which the object of the present invention can be achieved.

DESCRIPTION OF SYMBOLS 1 ... Modeling apparatus, 2 ... Stage, 3 ... Modeling head, 4 ... Movement mechanism, 5 ... Controller, 6 ... Tape conveyance mechanism (feed mechanism), 7 ... Hot-air spraying mechanism, 10 ... Modeling material, 10A ... Thread-shaped modeling material, DESCRIPTION OF SYMBOLS 71 ... Compressor, 72 ... Gas supply part, 73 ... Duct, 721 ... Heat-resistant syringe, 721A ... Nozzle, 722 ... Core, 723 ... Heater coil, 723A ... Heater coil, 724 ... Temperature sensor, 725 ... Swing part, 726 ... Oscillating shaft.

Claims (13)

A feeding mechanism for conveying a modeling material having flexibility to a modeling position on the stage;
A hot air blowing mechanism that blows a heated gas to the tip of the modeling material conveyed to the modeling position;
A moving mechanism for moving the modeling position relative to the stage;
A modeling apparatus comprising: The modeling apparatus according to claim 1,
The modeling apparatus is a tape-shaped material having a rectangular cross section. The modeling apparatus according to claim 2,
The modeling material is characterized in that an aspect ratio of a tape thickness dimension and a tape width dimension in a sectional view is 10 or more. In the modeling apparatus of Claim 2 or Claim 3,
The hot-air spraying mechanism includes a swinging unit that moves the spraying position of the heated gas along the tape width direction of the modeling material. In the modeling apparatus according to any one of claims 1 to 4,
The hot air spray mechanism sprays an inert gas heated as the heated gas onto the modeling material. In the modeling apparatus according to any one of claims 1 to 5,
The hot air spraying mechanism sprays the heated gas onto the modeling material in an inert gas atmosphere. In the modeling apparatus according to any one of claims 1 to 6,
The hot air spraying mechanism sprays the dehumidified heated gas onto the modeling material. The modeling apparatus according to any one of claims 1 to 7,
The hot air spray mechanism sprays the heated gas from a direction inclined with respect to a normal direction of the stage. The modeling apparatus according to claim 8,
The modeling apparatus characterized in that the hot air blowing mechanism sprays the heated gas from the upstream side to the downstream side in the conveying direction of the modeling material. The modeling apparatus according to any one of claims 1 to 9,
The modeling material is made of metal. The modeling apparatus according to claim 10,
The modeling apparatus, wherein the modeling material is flame-retardant or incombustible. The modeling apparatus according to any one of claims 1 to 9,
The modeling material is made of a resin. Transport the modeling material with flexibility to the modeling position on the stage,
The stacking position of the modeling material is moved by blowing the heated gas to the front end of the modeling material conveyed to the modeling position to melt it, stacking the modeling material on the modeling position, and moving the modeling position. A modeling method characterized by modeling a modeled object by changing.

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