JP2020097196A - Three-dimensional molding apparatus and three-dimensional molding method - Google Patents

Abstract

To provide a three-dimensional molding apparatus and method capable of molding a three-dimensional objet with higher accuracy in an inkjet system.SOLUTION: A three-dimensional molding apparatus according to the present invention includes: a discharge unit that discharges a molding material; curing means for curing the molding material; a molding table for holding a base material having a molding surface for discharging the molding material; a position adjustment mechanism that adjusts a relative position of the molding table in a three-dimensional space with respect to the discharge unit; and a control unit that controls the discharge head, the curing means, and the position adjustment mechanism. A laminate of the molding material is formed by discharging the molding material a plurality of times continuously in a state where the discharge head is stationary with respect to the molding table, by the control unit. After the discharging of the plurality of times, the laminate is cured by means of the curing means.SELECTED DRAWING: Figure 1

Description

The present invention relates to a three-dimensional modeling device and a three-dimensional modeling method.

A three-dimensional modeling apparatus for additionally modeling a three-dimensional model on a substrate is widely used. The modeling surface on the base material is not limited to a flat surface but may be a curved surface, and it is required to form a three-dimensional modeled object with high accuracy even on such a curved modeling surface.

Various methods are known as a three-dimensional modeling method, and an inkjet method is widely known as one of them. In the inkjet method, for example, light or thermosetting ink is ejected along a scanning line, and then the ink ejected on the modeling surface is irradiated with light (for example, ultraviolet rays) or heat to be cured. By repeating such scanning, ink ejection, and curing, a three-dimensional structure having a desired shape can be formed.

In such an ink jet system, more and more highly accurate modeling is required, and as an example, modeling of a structure having a diameter of about 0.3 mm or columnar modeling with high roundness is required. Such high-accuracy modeling is difficult with the conventional inkjet system as described above.

JP 2005-205670 A

An object of the present invention is to provide a three-dimensional modeling apparatus and method capable of modeling a three-dimensional model with higher accuracy in an inkjet method.

In order to solve the above problems, the three-dimensional modeling apparatus according to the present invention is a discharge unit that discharges a modeling material, a curing unit that applies light or heat to the modeling material to cure the modeling material, and the modeling material. A modeling table for holding a substrate having a modeling surface for discharging, a position adjusting mechanism for adjusting the relative position of the three-dimensional space of the modeling table with respect to the discharging section, the discharging section, the curing means, A control unit for controlling the position adjusting mechanism, wherein the control unit discharges the molding material continuously a plurality of times in a state where the discharging unit is stationary with respect to the molding table, and is a laminate of molding materials. Is formed, and after discharging a plurality of times, it is operated to cure the laminated body by the curing means.

In this three-dimensional modeling apparatus, the position adjusting mechanism can be configured to be able to adjust the tilt angle of the modeling table. In addition, the control unit may be configured to control the position adjusting mechanism such that the ejection direction of the modeling material and the normal line of the base material are substantially coincident with each other.

Further, the three-dimensional modeling apparatus may further include a slice data generation unit that divides the three-dimensional data of the modeling material into slice data based on the curved surface shape data of the modeling surface. Also, the control unit may be configured to move the discharge unit relative to the modeling table along a discharge path. Further, the control unit is configured to repeat the movement of the ejection unit along the ejection path, the ejection of the modeling material by the ejection unit, and the curing of the modeling material by the curing unit until the end of the ejection path. Can be done.

In addition, the three-dimensional modeling method according to the present invention continuously discharges the modeling material in a state in which the discharging unit that discharges the modeling material for forming the target modeling object is stationary with respect to the modeling table on which the base material is placed. A plurality of times to form a laminate of the molding material, the laminate of the molding material is irradiated with light or heat to cure the laminate, and the discharge unit is used as a discharge path. Moving along.

The three-dimensional modeling method may further include a step of adjusting an inclination angle of the modeling table. In this case, the inclination angle of the modeling table can be adjusted so that the ejection direction of the modeling material and the normal line of the base material substantially match. The method may further include a step of dividing the three-dimensional data of the modeling material into slice data based on the curved surface shape data of the modeling surface.

According to the present invention, it is possible to provide a three-dimensional modeling apparatus and method capable of modeling a three-dimensional model with higher accuracy in an inkjet method.

It is a schematic perspective view which shows the whole structure of the 3D printer 100 of 1st Embodiment. 6 is a perspective view showing an example of a specific configuration of the position/tilt angle adjusting mechanism 15. FIG. It is a schematic diagram explaining a basic procedure in case of forming target modeling thing AS on substrate BE in 3D printer 100 of a 1st embodiment. 3 is a block diagram illustrating an example of a detailed configuration of a control unit 200 of the 3D printer 100 according to the first embodiment. FIG. It is a schematic diagram explaining generation of three-dimensional data of target modeling thing AS and slice data Si in the case where the shape of the modeling surface of base material BE is a curved surface. 6 is a flowchart illustrating a procedure of a three-dimensional modeling method using the 3D printer 100 according to the first embodiment. FIG. 7 is a schematic diagram illustrating how the position/tilt angle adjusting mechanism 15 adjusts the tilt angle of the modeling table 16. 6 is a timing chart showing an example of waveforms of drive signals Ssh, Sij, and Smc output from the control CPU 202. It is a schematic perspective view which shows the whole structure of the 3D printer 100 of 2nd Embodiment.

The present embodiment will be described below with reference to the accompanying drawings. In the accompanying drawings, functionally the same elements may be represented by the same numbers. It should be noted that although the accompanying drawings show embodiments and implementation examples in accordance with the principles of the present disclosure, these are for understanding of the present disclosure, and are used for limiting interpretation of the present disclosure. is not. The descriptions in this specification are merely exemplary, and are not intended to limit the scope of the claims or the application of the present disclosure in any sense.

Although the present embodiment has been described in detail enough for those skilled in the art to carry out the present disclosure, other implementations/forms are also possible without departing from the scope and spirit of the technical idea of the present disclosure. It is necessary to understand that the configuration and structure can be changed and various elements can be replaced. Therefore, the following description should not be limited to this.

[First Embodiment]
FIG. 1 is a schematic perspective view showing the overall configuration of the 3D printer 100 according to the first embodiment. The 3D printer 100 includes a frame 11, a Z gantry 12, a Y gantry 13, an X-direction rail 14, a position/tilt angle adjusting mechanism 15, a modeling table 16, an ink tank 17, an inkjet head 18 (ejection section), and a curing head 19 ( And a lifting device 20A, 20B. Further, a control unit 200 is provided for controlling each unit in the 3D printer 100.

The frame 11 has a rectangular frame, and accommodates a Z gantry 12 and the like, which will be described later, inside. Further, the Z gantry 12 is configured to be movable in the Z direction of FIG. 1 inside the frame 11 by the lifting devices 20A and 20B.

The Y gantry 13 is configured to be slidable on the surface of the Z gantry 12 along the Y direction in FIG. An X-direction rail 14 extending in the X-direction as a longitudinal direction is connected to an inner wall of the Y gantry 13, and a position/tilt angle adjusting mechanism 15 is movably arranged along the X-direction rail 14. .. The position/tilt angle adjusting mechanism 15 is configured to hold the modeling table 16 and adjust the tilt direction of the mounting surface of the modeling table 16. The modeling table 16 is a base on which a base material for forming the target modeling object is placed.

The position/tilt angle adjusting mechanism 15 can be an adjusting mechanism having a 6-axis parallel link mechanism as shown in FIG. 2 as an example. The mechanism of FIG. 2 has a base 151 slidable along the X-direction rail 14, a slider 152 radially arranged on the surface of the base 151, and a lower end of the slider 152 slidable. A sliding bar 153, which is held and whose upper end is connected to the bottom surface of the modeling table 16 via a universal joint or the like (not shown), is provided.

The position/tilt angle adjusting mechanism 15 (position adjusting mechanism) is capable of moving the modeling table 16 in three directions of XYZ (three-dimensional direction, three-dimensional space) by the Z gantry 12, the Y gantry 13, and the X-direction rail 14. In addition, by adjusting the position of the lower end of the sliding bar 153, the inclination angle of the modeling table 16 can be adjusted. With this configuration, the tilt angle can be adjusted in three directions. That is, the Z gantry 12, the Y gantry 13, the X-direction rails 14, and the position/tilt angle adjusting mechanism 15 enable adjustment in the 6-axis directions including the XYZ directions. The Z gantry 12, the Y gantry 13, and the position/tilt angle adjustment mechanism 15 are driven by actuators in drive detection mechanisms 208-1 to 208-6 described later, and their positions and tilt angles (rotation amounts) are driven. It is detected by the sensors in the detection mechanisms 208-1 to 208-6.

The position/tilt angle adjusting mechanism 15 adjusts the tilt angle of the inkjet head 18 so that the direction of ink ejection from the inkjet head 18 substantially coincides with the normal to the modeling surface of the substrate during the modeling operation by ejecting ink. When the base material has a planar shape (a plate material or the like), the position/tilt angle adjusting mechanism 15 can be omitted.

The Z gantry 12, the Y gantry 13, and the position/tilt angle adjusting mechanism 15 can be moved in the X direction, the Y direction, and the Z direction on the modeling table 16 by the above-described operations. Further, the tilt angle of the modeling table 16 can be adjusted by adjusting the tilt angle by the position/tilt angle adjusting mechanism 15. By adjusting the inclination angle of the shaping plane of the base material on the shaping table 16, it becomes possible to easily and highly accurately perform additional shaping even on the base material whose shaping plane is a curved surface.

In the apparatus of FIG. 1, the ink tank 17, the inkjet head 18, and the curing head 19 are fixedly held by the frame 11 above the modeling table 16. The modeling process can be performed by moving the modeling table 16 relative to the inkjet head 18. If necessary, a movement adjusting mechanism may be provided so that the ink tank 17, the inkjet head 18, and the curing head 19 can be moved with respect to the frame 11. In the movement control of the modeling table 16, control is performed so that the distance between the substrate BE placed on the modeling table 16 or the target modeling object AS and the inkjet head 18 maintains a predetermined clearance distance. Is preferably performed. This control may be performed by a distance sensor such as an optical sensor and based on the measurement result, or may be performed based on the CAD data of the base material BE.

The ink tank 17 holds the ink ejected from the inkjet head 18. Then, the inkjet head 18 ejects this ink along the direction of gravity (Z direction) to form a three-dimensional structure. In this 3D printer 100, the inkjet head 18 is configured to eject ink in a stationary state with respect to the frame 11 and the modeling table 16. While the inkjet head 18 is ejecting ink, the modeling table 16 is also stationary and ejects ink. Therefore, the ink from the inkjet head 18 is ejected along the vertical direction (Z direction) with respect to the ejection target position.

As the ink, an ultraviolet curable ink that is cured by being irradiated with ultraviolet rays can be used. In addition to ultraviolet rays, curable ink that is cured by heating or electron beam irradiation can also be used. Hereinafter, an example using an ultraviolet curable ink will be mainly described as an example.

The 3D printer 100 according to the first embodiment employs a vector scan method in which the inkjet head 18 is moved along a position where a modeling material is formed to form a three-dimensional modeled object as described later. That is, unlike the raster scan method in which the entire modeling area is scanned along a plurality of parallel scanning lines to form a modeled object, in the vector scan method, only the position where the inkjet head 18 should form the modeling material is determined. A discharge path is generated by a computer so as to pass therethrough, and the inkjet head 18 moves relative to the modeling table 16 along the discharge path.

Furthermore, in this 3D printer 100, while executing the vector scan method, as shown in FIG. 3, ink is repeatedly ejected onto the base material BE a plurality of times with the inkjet head 18 kept stationary at the same location ((( 1)), and after the ink is ejected a plurality of times, a curing process is performed by ultraviolet irradiation or the like ((2)) to form a stack of inks, and the target modeled object AS is formed on the base material BE. As an example, the inkjet head 18 ejects about 5 to 20 pl of ink each time, repeats this ejection several tens to several thousands times at the same location, and then performs a curing process. As described above, the inkjet head 18 is configured to eject the ink in a stationary state with respect to the frame 11 and the modeling table 16. This makes it possible to form a columnar shaped article having a height according to the number of times the ink is ejected. When the inkjet head ejects ink while moving in the scanning direction, the ink flies in an oblique direction which is the sum of the vector in the moving direction of the inkjet head and the vector in the ink ejection direction. Therefore, it is not possible to form a columnar shaped article as shown in FIG. As in the present embodiment, it is possible to form such a columnar shaped object by continuously ejecting the ink a plurality of times with the inkjet head 18 stationary with respect to the modeling table 16 and then curing the ink. Become.

When the ejection and the curing process are completed a predetermined number of times, the inkjet head 18 moves along the determined ejection path ((3)), and the above processes (1) and (2) are repeated. The number of times the ink is ejected at the same location depends on the amount of ink ejected per time, various properties of the ink (including viscosity), environmental temperature, and properties of the base material (material, surface roughness, curvature, etc.).

In the vector scanning method according to the first embodiment, the inkjet head 18 may move relative to the modeling table 16, and the moving target may be the modeling table 16 or the inkjet head 18. May be. However, in any case, the inkjet head 18 is maintained stationary with respect to the modeling table 16 during ink ejection. In the following embodiments, the former method will be mainly described, but the present invention is not limited to this.

Since the ink is continuously ejected to form a columnar shaped article as shown in FIG. 2, the ejected ink is preferably an ink having a viscosity of a predetermined value or more. As an example, when the ultraviolet curable ink is formed of a polymerizable monomer or the like as a material, the viscosity of the ink can be 20 mPa·s or less. However, as long as the ink stack can be formed, the ink materials, the viscosity, and the presence or absence of the mixture do not matter. It is assumed that the required viscosity value differs depending on the ink material, the material or ratio of the mixture, the environmental temperature during modeling, the discharge amount per time, and other conditions. The ultraviolet curable ink may be a solventless type or a solvent type (including a solvent as a base material).

The 3D printer 100 is controlled by various control signals from the control unit 200. FIG. 4 shows an example of a detailed configuration of the control unit 200. The control unit 200 has a configuration for controlling the inkjet head 18, the curing head 19, and the drive detection mechanisms 208-1 to 208-6. The host PC 201, the control CPU 202, the head control unit 203, the curing head driver 204, and the inkjet head driver. 205, a mechanism control unit 206, and a mechanism driver 207. Each of the drive detection mechanisms 208-1 to 208-6 has a Z gantry 12, a Y gantry 13, and a position/tilt angle adjusting mechanism 15 for moving the modeling table 16 in the XYZ directions and adjusting the tilt angle by the built-in actuators. Is driven, and its position and tilt angle are detected by a built-in sensor.

The host PC 201 decomposes the three-dimensional data of the target object AS into slice data Si which is a plurality of curved surface data arranged in the stacking direction. That is, the host PC 201 functions as a slice data generation unit that divides three-dimensional data into slice data. The slice data Si is given a shape that matches the shape of the modeling surface of the base material BE on which the target modeling object AS is formed. For example, if the shape of the modeling surface of the base material BE is a plane, the slice data Si can also be a plane shape. On the other hand, in the case where the shape of the modeling surface of the base material BE is a curved surface, it is preferable that the three-dimensional data of the target modeling object AS also be given a shape that conforms to this curved surface shape, as shown in FIG. Further, it is preferable that the slice data Si also has a curved surface shape that matches the shape of the modeling surface of the base material BE. Each of the slice data Si has a thickness corresponding to a plurality of ink ejections. The slice data Si in the stacking direction do not all have to have a uniform thickness, and the thicknesses may be different from each other.

Returning to FIG. 4, the description will be continued. The host PC 201 further generates control data for controlling the inkjet head 18, the curing head 19, and the drive detection mechanisms 208-1 to 208-6 based on the generated slice data. The host PC 201 is configured to be able to set ejection path data indicating a relative movement path of the inkjet head 18 based on control data using a CAM tool. The set ejection path is pre-verified in the host PC 201 according to the three-dimensional data of the target modeling object AS, the operating environment of the apparatus, the property data of the ink, and other various data (including temperature, humidity, etc.) related to the modeling environment, and is required. The fix is applied. If the preliminary verification is unnecessary, the CAM tool can be omitted and the ejection pass data can be generated based on only the slice data.

The control CPU 202 controls the ink ejection/curing control data for controlling the inkjet head 18 and the curing head 19 and the drive detection mechanisms 208-1 to 208-6 based on the ejection path data output from the host PC 201. Drive control data is generated.

In accordance with the ejection/curing control data, the head control unit 203 sends to the curing head driver 204 a drive signal Smc indicating the start timing, irradiation time, irradiation amount, etc. of the irradiation of the ultraviolet rays irradiated from the curing head 19 for curing. Output. The curing head driver 204 drives the curing head 19 according to the drive signal Smc.

Further, the head control unit 203 indicates to the inkjet head driver 205, according to the ink ejection/curing control data, the ejection start timing of the ink ejected from the inkjet head 18, the number of ejections, the ejection amount per ejection, and the like. The drive signal Sij is output. The inkjet head driver 205 drives the inkjet head 18 according to the drive signal Sij.

The mechanism control unit 206 outputs the drive signal Ssh indicating the drive start timing and the drive amount in the drive detection mechanisms 208-1 to 208-6 to the mechanism driver 207 according to the drive control data. The mechanism driver 207 drives the drive detection mechanisms 208-1 to 208-6 based on the drive signal Ssh.

Next, an execution procedure of the three-dimensional modeling method using the apparatus of FIG. 1 will be described with reference to the flowchart of FIG. First, the host PC 201 acquires the curved surface shape data of the modeling surface of the base material BE on which the target modeling object AS is formed (step S11). The curved surface shape data of the modeling surface may be acquired by actually photographing the modeling surface of the base material BE with a camera (not shown), or by acquiring the CAD data of the base material BE from the outside. Is also possible.

Next, the slice data Si of the three-dimensional data of the target object AS is generated from the object data and the curved surface shape data of the object surface obtained in step S11 (step S12). As described with reference to FIG. 5, the three-dimensional data of the target modeling object is sliced so that the curved surface shape data of the modeling surface and the shape of the slice data Si substantially match.

When the slice data Si is generated, an ejection path in which the inkjet head 18 relatively moves is generated in the host PC 201 based on the slice data Si (step S13). The host PC 201 completes the ejection of the modeling area in the _Nth slice data S _N , and then shifts to the ejection of the modeling area in the _N+ 1th slice data S _N+1 . Generate a path. When the ejection path is generated, as described above, the ink ejection/curing control data and the drive control data are generated according to the ejection path (steps S14 and S15).

After that, the drive detection mechanisms 208-1 to 208-6 are driven to move the modeling table 16 to the initial position of the ejection path, and the inclination angle of the modeling table 16 is adjusted according to the curved surface shape data of the modeling surface (step S16). Movement in the XYZ directions is performed by movement of the position/tilt angle adjusting mechanism 15 along the Z gantry 12, the Y gantry 13, and the X-direction rail 14. Further, as shown in FIG. 7, it is possible to adjust the tilt angles in the three directions by adjusting the movement amounts of the six sliding bars 153. As a result, the normal line of the ink ejection position on the modeling surface SF can be made substantially parallel to the Z direction.

When it is detected that the adjustment of the position and the tilt angle of the modeling table 16 is completed (step S17), the modeling table 16 and the inkjet head 18 are relatively stationary at the position, and the predetermined number of times is determined. The ink is repeatedly ejected from the inkjet head 18 by n (step S18). When ink ejection is completed n times at the same location, the ink ejected from the curing head 19 is irradiated with ultraviolet rays, and the ink is cured by the ultraviolet rays (step S19). After that, the operations of steps S16 to S19 are repeated until the inkjet head 18 reaches the end point of the ejection path due to the movement along the ejection path and the modeling along the ejection path is completed (step S20).

FIG. 8 shows an example of the waveforms of the drive signals Ssh, Sij, Smc output from the control CPU 202. When the drive detection mechanism Ssh starts up, the position and inclination angle of the modeling table 16 are controlled according to the information included in the signal Ssh. When the sensor detects that the desired position and inclination angle are obtained, the drive signal Sij rises. Since the drive signal Sij ejects ink continuously from the inkjet head 18, it can be a continuous pulse signal as shown in FIG. 8, and the ink is ejected from the inkjet head 18 for each pulse.

When the ejection of the ink is completed, the drive signal Smc rises, whereby the curing head 19 irradiates ultraviolet rays toward the ink stack, and the ink in the stack is cured. The above signals are sequentially repeated until the end of the ejection pass.

As described above, according to the three-dimensional modeling apparatus according to the first embodiment, the inkjet head 18 continuously inks along the generated ejection path in a stationary state with respect to the modeling table 16. Is ejected, and thereafter, the formed ink model is cured by ultraviolet irradiation or the like. By this operation, a columnar shaped article having a width corresponding to the width of the ejected ink can be formed on the modeling surface. By repeating the continuous ejection of ink, the ultraviolet curing, and the movement of the inkjet head 18 along the ejection path, it is possible to perform additional modeling with high accuracy on the base material.

Further, in the first embodiment, the tilt angle of the modeling table 16 is adjusted by the position/tilt angle adjusting mechanism 15, the ink ejection direction from the inkjet head 18 and the normal line of the modeling surface of the base material BE. The directions can be made to substantially match. By matching the two, it becomes possible to more accurately form the columnar shaped article as described above.

[Second Embodiment]
Next, with reference to FIG. 9, a three-dimensional modeling apparatus according to the second embodiment will be described. In FIG. 9, the same components as those in FIG. 1 are designated by the same reference numerals, and therefore, duplicated description will be omitted below.

The structure of the position/tilt angle adjusting mechanism 15 of the three-dimensional modeling apparatus of the second embodiment is different from that of the first embodiment. The position/tilt angle adjusting mechanism 15 according to the first embodiment has a 6-axis parallel link mechanism so that the tilt angle can be adjusted in three directions in addition to the three directions in the XYZ directions. On the other hand, the position/tilt angle adjusting mechanism 15 according to the second embodiment can adjust the tilt angle only in two directions, and can be adjusted in five directions including the XYZ directions.

The position/tilt angle adjusting mechanism 15 of the second embodiment includes a rotary sliding portion 154, a base 155, a rotary shaft 156, and a shaft 157, as shown in FIG. 9 as an example. The rotary sliding portion 154 is configured to be linearly movable along the X-direction rail 14, and is also configured to be rotatable along the radial direction of the X-direction rail 14. The bottom surface of the base 155 is connected to the upper end of the rotary sliding portion 154.

The base 155 has side walls standing up in the Z direction at both ends in the Y direction, and a rotary shaft 156 is attached between the two side walls. The rotary shaft 156 is attached with the Y direction as the longitudinal direction and is configured to be rotatable in the radial direction with respect to the side wall of the base 155.

A lower end of a shaft 157 is attached to the rotary shaft 156, and a shaping table 16 is connected to an upper end of the shaft 157. With this configuration, the modeling table 16 can be rotated in two directions by the rotation of the rotary sliding portion 154 and the rotary shaft 156, and the inclination angle thereof can be adjusted in the two directions.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are also included in the invention described in the claims and the scope equivalent thereto.

For example, in the above embodiment, an example in which the vector scan method is executed has been described, but the present invention is not limited to this. While the inkjet head 18 is stationary with respect to the modeling table 16, the ink is continuously discharged a plurality of times to form a stack of inks, and after the plurality of discharges, the curing head 19 cures the stack. As long as it operates, raster scanning or a method similar thereto may be adopted. The structure of the inkjet head when the raster scan method is adopted may be a line head or a shuttle head. In this case, the inkjet head is provided with a plurality of nozzles (ejection ports), and if a plurality of nozzle rows are provided side by side, the positional relationship between the inkjet head 18 and the modeling table 16 in the normal direction is maintained. It is also possible to stack efficiently by using a large number of nozzles within a flat area.

11... Frame, 12... Z gantry, 13... Y gantry, 14... X direction rail, 15... Position/tilt angle adjusting mechanism, 16... Modeling table, 17... Ink tank, 18... Inkjet head, 19... Curing head, 20A , 20B... Elevating device, 100... 3D printer, 151... Base, 152... Slider, 153... Sliding bar, 200... Control unit, 201... Host PC, 202... Control CPU, 203... Head control unit, 204... Curing head driver, 205... Inkjet head driver, 206... Mechanism control part, 207... Mechanism driver, 208-1 to 6... Drive detection mechanism, AS... Target modeling object, BE... Base material.

Claims (8)

A discharge unit that discharges the molding material,
Curing means for applying light or heat to the modeling material to cure the modeling material;
A modeling table for holding a substrate having a modeling surface for discharging the modeling material,
A position adjusting mechanism for adjusting the relative position of the modeling table in the three-dimensional space with respect to the discharging unit;
A control unit that controls the discharge unit, the curing unit, and the position adjustment mechanism,
The control unit continuously discharges the modeling material a plurality of times to form a laminate of the modeling material in a state where the discharging unit is stationary with respect to the modeling table, and after the discharging is performed a plurality of times, the A three-dimensional modeling apparatus, which operates so as to cure the laminate by a curing unit. The position adjusting mechanism is configured to be able to adjust the inclination angle of the modeling table,
The three-dimensional modeling apparatus according to claim 1, wherein the control unit controls the position adjusting mechanism such that a discharge direction of the modeling material and a normal line of the base material substantially match. The three-dimensional modeling apparatus according to claim 1, further comprising a slice data generation unit that divides three-dimensional data of the modeling material into slice data based on curved surface shape data of the modeling surface. The three-dimensional modeling apparatus according to claim 1, wherein the control unit is configured to move the discharging unit relative to the modeling table along a discharging path. The control unit is configured to repeat the movement of the ejection unit along the ejection path, the ejection of the modeling material by the ejection unit, and the curing of the modeling material by the curing unit until the end point of the ejection path. The three-dimensional modeling apparatus according to claim 4. A stack of molding materials by continuously discharging the molding material a plurality of times in a state in which the discharging unit that discharges the molding material for forming the target molding object is stationary with respect to the molding table on which the base material is placed. Forming a
A step of irradiating light or heat to the laminate of the molding material to cure the laminate;
And a step of moving the discharge part along a discharge path. Further comprising the step of adjusting the inclination angle of the modeling table,
The three-dimensional modeling method according to claim 6, wherein an inclination angle of the modeling table is adjusted so that a discharge direction of the modeling material and a normal line of the base material substantially match with each other. The three-dimensional modeling method according to claim 6 or 7, further comprising dividing the three-dimensional data of the modeling material into slice data based on curved surface shape data of a modeling surface on which the modeling material is ejected.

Images