JP2018065359A - Three-dimensional molding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-dimensional molding device capable of molding a solid molded article while suppressing molding of a support material.SOLUTION: The three-dimensional molding device 1 which cures an ultraviolet-curable ink discharged towards a work plane 11a and thereby molds a solid molding article on the work plane 11a comprises: a mounting stand 11 which has a work plane 11a; an inkjet head 14 which discharges an ultraviolet-curable ink toward the work plane 11a; and a carriage drive part 16 which moves the inkjet head 14 in the main scanning direction; and a B axis tilt drive part 17d which tilts the mounting stand 11 with B axis as the center, the B axis being extending in the direction orthogonal to C axis, which extends in the perpendicular direction to the work plane 11a of the mounting stand 11, and the main scanning direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a three-dimensional modeling apparatus.

  A three-dimensional modeling apparatus that models a three-dimensional model by stacking a plurality of layered modeling materials in a stacking direction on a work surface is known. In such a three-dimensional modeling apparatus, for example, an ultraviolet curable ink that is cured by irradiating ultraviolet rays is used as the functional ink, and the ultraviolet curable ink is cured to form a modeling material. In such a three-dimensional modeling apparatus, a support material that supports the three-dimensional modeled object may be modeled together with the three-dimensional modeled object. As modeling using a support material, for example, in Patent Document 1, a photocurable molding resin (modeling material) and a support resin (support material) are sequentially laminated by a three-dimensional printer based on imaging data of an artificial organ. It is described that a body model is formed, and a support resin is removed from the outer body to form a model (shell body type) of an organ model having a cavity inside.

JP 2014-21174 A

  However, if the support material is modeled to support the three-dimensional object, the support material becomes an unnecessary part after the three-dimensional object is modeled, so that the ink used for modeling the support material is wasted. Also, it takes time for modeling work for modeling the support material.

  Then, this invention makes it a subject to provide the three-dimensional modeling apparatus which can model a three-dimensional molded item, suppressing modeling of a support material.

  The three-dimensional modeling apparatus of the present invention is a three-dimensional modeling apparatus that cures the functional ink discharged toward the work surface and forms a three-dimensional object on the work surface, and a mounting table having the work surface; A droplet discharge head that discharges the functional ink toward the work surface, a head drive unit that moves the droplet discharge head in the main scanning direction, and a direction perpendicular to the work surface of the mounting table And a B-axis tilt drive unit that tilts the mounting table about a C-axis that extends and a B-axis that extends in a direction orthogonal to the main scanning direction.

  According to this configuration, when the three-dimensional object has a portion protruding in the main scanning direction, the protruding portion is changed from the main scanning direction to the axial direction of the C axis by inclining the mounting table about the B axis. Can be tilted. And the overhang | projection site | part can be modeled with a droplet discharge head along the axial direction of C axis | shaft. For this reason, a support material is required when modeling a portion that protrudes in the main scanning direction. However, the protruding portion that is formed along the axial direction of the C-axis does not need to be supported by the support material. Therefore, it is possible to model a three-dimensional modeled object while suppressing the modeling of the support material.

  The B axis is preferably provided at the center of the work surface in the main scanning direction.

  According to this configuration, the mounting table can be balanced and inclined with the center of the work surface in the main scanning direction as an axis. That is, when one side of the work surface in the main scanning direction moves away from the droplet discharge head, the other side of the work surface in the main scanning direction approaches the droplet discharge head, so that both sides of the work surface in the main scanning direction are balanced. Thus, the mounting table can be tilted.

  The B-axis is preferably provided on one side of the work surface in the main scanning direction.

  According to this configuration, the mounting table can be inclined with the one side of the work surface in the main scanning direction as an axis. For this reason, since the mounting table can be inclined so that the entire work surface of the mounting table is separated from the droplet discharge head, it is possible to suppress a part of the mounting table from approaching the droplet discharge head, Physical interference with the droplet discharge head can be suppressed.

  Moreover, it is preferable to further include a C-axis rotation drive unit that rotates the mounting table around the C-axis.

  According to this configuration, the mounting table can be rotated around the C axis, and the mounting table can function as a so-called turntable. For this reason, regardless of the direction in which the projecting part of the three-dimensional modeled object is projected, the projecting direction of the projecting part is directed to the main scanning direction by rotating the mounting table and changing the position of the three-dimensional modeled object. After that, by tilting the mounting table around the B axis, the overhanging direction can be made to be a direction along the axial direction of the C axis. Therefore, even if the projecting direction of the projecting part of the three-dimensional model is any direction, the projecting part can be modeled along the axial direction of the C-axis, and the three-dimensional modeled object is further suppressed while modeling the support material. Can be shaped.

  Moreover, it is preferable to further include an A-axis tilt drive unit that tilts the mounting table around an A-axis extending in a direction orthogonal to the B-axis and the C-axis.

  According to this configuration, when the three-dimensional structure has a portion projecting in the axial direction of the B axis, the projecting portion is inclined from the axial direction of the B axis to the C axis by inclining the mounting table around the A axis. It can be tilted to be axial. And the overhang | projection site | part can be modeled with a droplet discharge head along the axial direction of C axis | shaft. Therefore, the projecting part can be modeled along the axial direction of the C axis, and the three-dimensional modeled object can be modeled while further suppressing the modeling of the support material.

  In addition, the apparatus further includes a control unit that controls the droplet discharge head, the head driving unit, and the B-axis tilt driving unit, and the control unit tilts the mounting table by the B-axis tilt driving unit, When ejecting the functional ink from the droplet ejection head, the side closer to the droplet ejection head than the ejection amount of the functional ink on the side farther from the droplet ejection head in the main scanning direction. It is preferable to reduce the discharge amount of the functional ink.

  According to this configuration, when the mounting table is tilted, a part of the mounting table is moved away from the droplet discharge head, and the other part of the mounting table is relatively smaller than the part of the mounting table. Get closer to. For this reason, the amount of functional ink on the side far from the droplet ejection head is increased and the amount of functional ink on the side near the droplet ejection head is reduced, so that the modeling material on the far side having a large movement amount can be used. The thickness can be increased, and the thickness of the modeling material on the near side where the movement amount is small can be reduced.

  Further, the unit further includes a control unit that controls the droplet discharge head, the head driving unit, and the B-axis tilt driving unit, and the three-dimensional modeled object is a layered modeling material obtained by curing the functional ink The control unit discharges the functional ink from the droplet discharge head while tilting the mounting table by the B-axis tilt driving unit. In this case, it is preferable that in the main scanning direction, the number of the modeling material on the side closer to the droplet ejection head is reduced as compared with the number of the modeling material on the side far from the droplet ejection head.

  According to this configuration, when the mounting table is tilted, a part of the mounting table is moved away from the droplet discharge head, and the other part of the mounting table is relatively smaller than the part of the mounting table. Get closer to. For this reason, by increasing the number of layers of modeling material on the side far from the droplet discharge head and reducing the number of layers of modeling material on the side near the droplet discharge head, the modeling material on the far side of the B-axis with a large amount of movement The thickness of the modeling material on the side close to the B axis with a small amount of movement can be reduced.

  Further, the three-dimensional modeled object is modeled by laminating a unit layer, which is a layered modeling material obtained by curing the functional ink, on the work surface, and an excess portion of the unit layer before curing is formed. A flattening roller for removing and flattening the unit layer after curing; and a controller for controlling the droplet discharge head, the head driving unit, the B-axis tilt driving unit, and the flattening roller. When the functional ink is ejected from the liquid droplet ejection head while the mounting table is tilted by the B-axis tilt driving unit, the control unit is cured by the flattening roller for each unit layer before the curing. It is preferable to remove excess portions of the unit layer.

  According to this configuration, since the unit layer formed by inclining the mounting table can be flattened by the flattening roller, the unit layer can be formed to have an appropriate thickness, A three-dimensional model can be suitably modeled.

FIG. 1 is a perspective view illustrating a three-dimensional structure formed by the three-dimensional modeling apparatus according to the first embodiment. FIG. 2 is a schematic configuration diagram illustrating a schematic configuration of the three-dimensional modeling apparatus according to the first embodiment. FIG. 3 is a schematic diagram illustrating a three-dimensional modeled object that is modeled on the mounting table of the three-dimensional modeling apparatus according to the first embodiment. FIG. 4 is a schematic diagram illustrating a part of the three-dimensional modeling apparatus according to the second embodiment. FIG. 5 is a schematic configuration diagram illustrating a schematic configuration of the three-dimensional modeling apparatus according to the third embodiment. FIG. 6 is a schematic diagram illustrating a part of the three-dimensional modeling apparatus according to the fourth embodiment. FIG. 7 is a schematic diagram illustrating a part of the three-dimensional modeling apparatus according to the fifth embodiment.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same. Furthermore, the constituent elements described below can be appropriately combined, and when there are a plurality of embodiments, the embodiments can be combined.

[Embodiment 1]
FIG. 1 is a perspective view illustrating a three-dimensional structure formed by the three-dimensional modeling apparatus according to the first embodiment. FIG. 2 is a schematic configuration diagram illustrating a schematic configuration of the three-dimensional modeling apparatus according to the first embodiment. FIG. 3 is a schematic diagram illustrating a three-dimensional modeled object that is modeled on the mounting table of the three-dimensional modeling apparatus according to the first embodiment.

  The three-dimensional modeling apparatus 1 according to the first embodiment is a so-called inkjet 3D printer using an inkjet head (droplet ejection head) 14. The three-dimensional modeling apparatus 1 models a three-dimensional model 5 by stacking a plurality of unit layers, which are layered modeling materials, from the lower side in the vertical direction toward the upper side. Prior to the description of the three-dimensional modeling apparatus 1, the three-dimensional model 5 will be described with reference to FIG.

  As shown in FIG. 1, a three-dimensional structure 5 formed by the three-dimensional modeling apparatus 1 has a portion projecting in a predetermined direction, and FIG. 1 shows a cylindrical three-dimensional structure as an example. 5 is illustrated. In the cylindrical three-dimensional structure 5 shown in FIG. 1, the axial direction of the axis I is inclined with respect to the end surfaces (upper surface and lower surface) on both sides in the axial direction. That is, when the upper surface and the lower surface are horizontal surfaces, the axis I of the three-dimensional structure 5 is an axial direction inclined with respect to the horizontal surface, and the three-dimensional structure 5 is viewed from the lower side in the vertical direction (Z direction). It projects horizontally in the upward direction. Here, as described above, since the three-dimensional structure 5 is formed by stacking a plurality of unit layers in the Z direction, it is necessary to support the protruding portion of the three-dimensional structure 5.

  Next, the three-dimensional modeling apparatus 1 will be described with reference to FIG. As shown in FIG. 2, the three-dimensional modeling apparatus 1 includes a mounting table 11, a Y bar 12, a carriage 13, an inkjet head 14, an ultraviolet irradiator 15, a carriage driving unit (head driving unit) 16, The mounting table drive unit 17, the control unit 18, and the input unit 19 are provided.

  The mounting table 11 is formed in a plate shape extending in a horizontal plane, and the upper surface in the vertical direction is a work surface 11a. The work surface 11a is parallel to the horizontal plane (XY plane in FIG. 2) at the initial position, and is formed flat. The work surface 11a is a flat surface on which the three-dimensional structure 5 is formed by stacking a plurality of unit layers. And as shown in FIG. 3, the mounting base 11 is made to move the work surface 11a so that inclination is possible, and it can shape | mold the three-dimensional molded item 5 on the inclined work surface 11a. The work surface 11a of the mounting table 11 is formed in, for example, a substantially rectangular shape, but is not limited thereto.

  The Y bar 12 is provided at a predetermined interval above the mounting table 11 in the vertical direction. The Y bar 12 is provided linearly along the main scanning direction parallel to the horizontal direction (Y axis). The Y bar 12 guides the carriage 13 that reciprocates along the main scanning direction.

  The carriage 13 is held by the Y bar 12 and can reciprocate in the main scanning direction (Y direction) along the Y bar 12. The carriage 13 is controlled to move in the main scanning direction. The carriage 13 holds an inkjet head 14 and an ultraviolet irradiator 15 on a surface facing the work surface 11a of the mounting table 11 in the vertical direction.

  The inkjet head 14 ejects ultraviolet curable ink as functional ink toward the work surface 11a. The inkjet head 14 is mounted on the carriage 13 and can reciprocate in the main scanning direction as the carriage 13 moves along the main scanning direction. The inkjet head 14 is connected to an ink tank (not shown) mounted on the carriage 13 via various ink flow paths, a regulator, a pump, and the like, for example. A plurality of inkjet heads 14 are provided in accordance with the type of ultraviolet curable ink used for modeling the three-dimensional model 5. The inkjet head 14 ejects ultraviolet curable ink in the ink tank toward the work surface 11 a of the mounting table 11 by an inkjet method.

  Here, as the type of the ultraviolet curable ink, for example, white ink, cyan (C), magenta (M), yellow (Y), black (K), etc., according to the color of the three-dimensional model 5 to be modeled. Colored ink, transparent ink, and the like can be used as appropriate. The inkjet head 14 is electrically connected to the control unit 18, and the driving of the inkjet head 14 is controlled by the control unit 18.

  The ultraviolet irradiator 15 irradiates the ultraviolet curable ink discharged onto the work surface 11a with ultraviolet rays. The ultraviolet irradiator 15 is configured by, for example, an LED module that can irradiate ultraviolet rays. The ultraviolet irradiator 15 is mounted on the carriage 13 and can reciprocate in the main scanning direction as the carriage 13 moves along the main scanning direction. The ultraviolet irradiator 15 is electrically connected to the control unit 18, and its driving is controlled by the control unit 18.

  The carriage drive unit (head drive unit) 16 is a drive unit that reciprocally moves (scans) the carriage 13 relative to the Y bar 12, that is, the inkjet head 14 and the ultraviolet irradiator 15 in the main scanning direction. . The carriage drive unit 16 includes, for example, a transmission mechanism such as a conveyance belt connected to the carriage 13 and a drive source such as an electric motor that drives the conveyance belt, and transmits the power generated by the drive source via the transmission mechanism. Thus, the power is converted into power for moving the carriage 13 along the main scanning direction, and the carriage 13 is reciprocated along the main scanning direction. The carriage drive unit 16 is electrically connected to the control unit 18, and the drive is controlled by the control unit 18.

  The mounting table drive unit 17 moves the mounting table 11 relative to the inkjet head 14, and as shown in FIG. 2, the vertical direction moving unit 17a, the sub-scanning direction moving unit 17b, and the axis rotation unit. 17c and a B-axis tilt drive unit 17d.

  The vertical direction moving unit 17 a moves the mounting table 11 up and down along the vertical direction (Z direction), thereby moving the work surface 11 a formed on the mounting table 11 in the vertical direction relative to the inkjet head 14. It moves up and down along. Thereby, the mounting table drive unit 17 can bring the work surface 11a closer to or away from the inkjet head 14, the ultraviolet irradiator 15 and the like along the vertical direction. That is, the mounting table driving unit 17 can move the work surface 11 a relative to the inkjet head 14 and the ultraviolet irradiator 15 along the vertical direction.

  The sub-scanning direction moving unit 17b moves the mounting table 11 in the sub-scanning direction parallel to the X direction orthogonal to the main scanning direction, so that the work surface 11a formed on the mounting table 11 is moved with respect to the inkjet head 14. Relatively reciprocating along the sub-scanning direction. Thereby, the mounting table drive unit 17 can reciprocate the work surface 11a along the sub-scanning direction with respect to the inkjet head 14, the ultraviolet irradiator 15, and the like. That is, the sub-scanning direction moving unit 17b can relatively reciprocate the inkjet head 14, the ultraviolet irradiator 15, and the work surface 11a in the sub-scanning direction. In the first embodiment, the sub-scanning direction moving unit 17b moves the mounting table 11 in the sub-scanning direction. However, the present invention is not limited to this, and the Y-bar 12, the inkjet head 14, and the ultraviolet irradiator 15 are not limited thereto. May be moved in the sub-scanning direction.

  The shaft rotation unit (C-axis rotation drive unit) 17c rotates the mounting table 11 around the C axis to rotate the work surface 11a formed on the mounting table 11 relative to the inkjet head 14. It functions as a so-called turntable. Here, the C-axis is an axis extending in a direction perpendicular to the flat work surface 11a of the mounting table 11, and the axial direction of the C-axis is an inclination of a B-axis inclination driving unit 17d described later. It changes following. For this reason, the C axis is parallel to the vertical direction when the work surface 11a is a horizontal plane. Thereby, the mounting table drive unit 17 can rotate the work surface 11a around the C axis with respect to the inkjet head 14, the ultraviolet irradiator 15, and the like.

  The B-axis tilt drive unit 17d extends in the X direction orthogonal to the C axis extending in the direction perpendicular to the work surface 11a of the mounting table 11 and the A axis extending in the Y direction that is the main scanning direction. The mounting table 11 is tilted around the B axis. The B axis is provided at the center of the work surface 11a in the main scanning direction. For this reason, as shown in FIG. 3, when the B-axis tilt drive unit 17d tilts the mounting table 11 about the B-axis, one side of the mounting table 11 in the main scanning direction is lowered with the B-axis interposed therebetween. The other side of the mounting table 11 in the main scanning direction is raised.

  The control unit 18 controls each unit of the three-dimensional modeling apparatus 1 including the inkjet head 14, the ultraviolet irradiator 15, the carriage driving unit 16, the mounting table driving unit 17, and the like. The control unit 18 includes hardware such as an arithmetic device and a memory, and a program that realizes these predetermined functions. The control unit 18 controls the inkjet head 14 to control the discharge amount, discharge timing, discharge period, and the like of the ultraviolet curable ink. The control unit 18 controls the ultraviolet irradiator 15 to control the intensity of ultraviolet light to be irradiated, the exposure timing, the exposure period, and the like. The control unit 18 controls the carriage driving unit 16 and controls the relative movement of the carriage 13 along the main scanning direction. The control unit 18 controls the mounting table driving unit 17 to control the relative movement of the mounting table 11 along the vertical direction and the sub-scanning direction, or relative movement (rotation) around the C axis and the B axis of the mounting table 11. And tilt).

  The input unit 19 is connected to the control unit 18 and is used to input modeling data related to modeling of the three-dimensional model 5 or to set modeling conditions for the three-dimensional model 5. The input unit 19 includes, for example, devices such as a PC and various terminals connected to the control unit 18 by wire / wireless.

  Next, control (hereinafter referred to as modeling control) related to modeling of the three-dimensional model 5 by the three-dimensional modeling apparatus 1 will be described. The control unit 18 of the three-dimensional modeling apparatus 1 executes modeling control related to modeling of the three-dimensional model 5 based on the modeling data of the three-dimensional model 5.

  Here, the control unit 18 creates slice data corresponding to a plurality of unit layers to be stacked, based on the modeling data. This slice data is data for modeling the unit layer constituting the three-dimensional model 5. For example, when the three-dimensional model 5 to be modeled is the one shown in FIG. 1, in the modeling control described later, the mounting table 11 is tilted about the B axis for each unit layer by the B axis tilt driving unit 17 d, so that each unit The slice data of the layer is generated in consideration of the inclination of the mounting table 11. That is, the control unit 18 generates slice data of each unit layer in consideration of a predetermined inclination angle inclined about the B axis. And the control part 18 models the three-dimensional molded item 5 by modeling each part so that a unit layer may be laminated | stacked while modeling a unit layer based on slice data.

  Specifically, when the three-dimensional model 5 as shown in FIG. 1 is modeled, the control unit 18 discharges ultraviolet curable ink from the inkjet head 14 while tilting the mounting table 11 by the B-axis tilt driving unit 17d. ing. Hereinafter, with reference to FIG. 3, modeling control of the three-dimensional model 5 shown in FIG. 1 will be described. In FIG. 3, the mounting table 11 is inclined so that the axial direction of the axis I of the three-dimensional structure 5 of FIG. 1 is the vertical direction (Z direction).

  As shown in FIG. 3, the initial position of the mounting table 11 at the start of modeling is a position where the work surface 11a is a surface parallel to the horizontal plane (step S101). In this state, the axial direction of the axis I of the three-dimensional object 5 to be modeled is inclined with respect to the vertical direction, and the control unit 18 continues until the axis I of the three-dimensional object 5 is in the vertical direction. The unit layer is formed repeatedly. That is, the control unit 18 shapes the unit layer based on the slice data of the unit layer, and thereafter tilts the mounting table 11 by a predetermined tilt angle and moves the mounting table 11 downward. And the control part 18 laminates | stacks a unit layer until the axial center I of the three-dimensional molded item 5 becomes a vertical direction by repeatedly performing modeling of a unit layer and the inclination of the mounting base 11, and a downward movement. Modeling is performed (step S102).

  Here, the control unit 18 changes the discharge amount of the ultraviolet curable ink discharged from the inkjet head 14 in the main scanning direction during the modeling of the unit layer. This is because when the mounting table 11 is tilted around the B axis, one side of the mounting table 11 in the main scanning direction is lowered, while the other side of the mounting table 11 in the main scanning direction is raised, This is because the side is separated from the inkjet head 14 and the other side of the mounting table 11 is close to the inkjet head 14. For this reason, the control unit 18 is closer to the inkjet head 14 (i.e., the discharge amount of the ultraviolet curable ink on the far side away from the inkjet head 14 (i.e., one side of the lowered mounting table 11) (i.e. The discharge amount of the ultraviolet curable ink on the other side of the raised mounting table 11 is continuously or stepwise reduced along the main scanning direction.

  When the axis I of the three-dimensional object 5 is in the vertical direction, the control unit 18 stops the inclination of the mounting table 11 by the B-axis inclination driving unit 17d, and the axis I of the three-dimensional object 5 is in the vertical direction. Is maintained (step S103). And the control part 18 models the three-dimensional molded item 5 by laminating | stacking the remaining unit layer based on the slice data of a unit layer, moving the mounting base 11 to the downward side by the vertical direction moving part 17a.

  As described above, according to the first embodiment, when the three-dimensional structure 5 has a portion protruding in the main scanning direction, the protruding portion is inclined in the main scanning direction by inclining the mounting table 11 about the B axis. Can be tilted so as to be in the vertical direction (Z direction). And the overhang | projection site | part can be modeled with the inkjet head 14 along a perpendicular direction. For this reason, when modeling the site | part projected in the main scanning direction, the support material was required, but the projecting site modeled along the vertical direction does not need to be supported by the support material. That is, since the unit layer to be modeled can be supported on the lower unit layer by inclining the mounting table 11, the three-dimensional model 5 is modeled while suppressing the modeling of the support material. be able to.

  Further, according to the first embodiment, by providing the B axis at the center of the work surface 11a in the main scanning direction, the mounting table 11 can be tilted while being balanced around the B axis. That is, when one side of the work surface 11a in the main scanning direction moves away from the ink jet head 14, the other side of the work surface 11a in the main scanning direction approaches the ink jet head 14, so both sides of the work surface 11a in the main scanning direction are balanced. In this state, the mounting table 11 can be tilted.

  Further, according to the first embodiment, in the main scanning direction of the inclined mounting table 11, the discharge amount of the ultraviolet curable ink on the side far from the inkjet head 14 is increased, and the ultraviolet curable ink on the side close to the inkjet head 14. By reducing the discharge amount, the thickness of the modeling material (unit layer) on the far side where the movement amount is large can be increased, and the thickness of the modeling material (unit layer) on the near side where the movement amount is small can be reduced.

  In the first embodiment, in the modeling control of the three-dimensional model 5 illustrated in FIG. 1, the mounting table 11 is tilted around the B axis by the B axis tilt driving unit 17 d, but the configuration is not limited thereto. Depending on the model 5, the mounting table 11 may be tilted about the B axis by the B-axis tilt driving unit 17d, and the mounting table 11 may be rotated about the axis (around the C axis) by the axis rotation unit 17c. . According to this configuration, even if the projecting direction of the projecting part of the three-dimensional structure 5 is any direction, the projecting direction of the projecting part can be changed by rotating the mounting table 11 to change the position of the three-dimensional structure 5. After that, by tilting the mounting table 11 around the B axis, the overhanging direction can be set to a direction along the axial direction of the C axis. Therefore, even if the projecting direction of the projecting part of the three-dimensional model 5 is any direction, the projecting part can be modeled along the axial direction of the C axis, and the three-dimensional modeling is performed while further suppressing the modeling of the support material. The object 5 can be shaped.

  Further, in the first embodiment, the mounting table driving unit 17 has the configuration including the axis rotation unit 17c, but may be configured to omit the axis rotation unit 17c.

[Embodiment 2]
Next, the three-dimensional modeling apparatus 1 according to the second embodiment will be described with reference to FIG. In the second embodiment, parts that are different from the first embodiment will be described in order to avoid redundant descriptions, and parts that are the same as those in the first embodiment will be described with the same reference numerals. FIG. 4 is a schematic diagram illustrating a part of the three-dimensional modeling apparatus according to the second embodiment.

  In the three-dimensional modeling apparatus 1 of Embodiment 2, the B-axis tilt driving unit 17d tilts the mounting table 11 about the B axis extending in the X direction, and the B axis is the main surface of the work surface 11a. It is provided close to the end of the other side (right side in FIG. 4) in the scanning direction.

  For this reason, as shown in FIG. 4, the initial position of the mounting table 11 at the start of modeling is a position where the work surface 11a is parallel to the horizontal plane (step S201). In this state, when the control unit 18 tilts the mounting table 11 about the B axis by the B-axis tilt driving unit 17d, the height of the other side in the main scanning direction of the mounting table 11 on which the B axis is provided does not change. Then, one side of the mounting table 11 in the main scanning direction is lowered (step S202). At this time, the downward movement of the mounting table 11 by the vertical direction moving unit 17a is a small moving amount because the other side of the mounting table 11 does not rise as in the first embodiment. Then, when the axis I of the three-dimensional object 5 is in the vertical direction, the control unit 18 stops the inclination of the mounting table 11 by the B-axis inclination driving unit 17d, and the axis I of the three-dimensional object 5 is in the vertical direction. The maintained state is maintained (step S203).

  As described above, according to the second embodiment, the mounting table 11 can be inclined with the one side of the work surface 11a in the main scanning direction as an axis. For this reason, since the mounting table 11 can be inclined so that the entire work surface 11 a of the mounting table 11 is separated from the inkjet head 14, it is possible to prevent a part of the mounting table 11 from approaching the inkjet head 14. Physical interference between the mounting table 11 and the inkjet head 14 can be suppressed.

[Embodiment 3]
Next, the three-dimensional modeling apparatus 30 according to the third embodiment will be described with reference to FIG. In the third embodiment, parts that are different from the first and second embodiments will be described in order to avoid redundant descriptions, and parts that have the same configurations as those in the first and second embodiments will be described with the same reference numerals. FIG. 5 is a schematic configuration diagram illustrating a schematic configuration of the three-dimensional modeling apparatus according to the third embodiment.

  In the three-dimensional modeling apparatus 30 of Embodiment 3, the mounting table driving unit 17 further includes an A-axis tilt driving unit 31.

  The A-axis tilt drive unit 31 tilts the mounting table 11 with the direction parallel to the main scanning direction as the axis, which is the axial direction. The A axis may be provided at the center of the work surface 11a in the sub-scanning direction, or may be provided close to one end of the work surface 11a in the sub-scanning direction, and is not particularly limited. When the A axis is provided in the center of the work surface 11a in the sub-scanning direction, the A-axis tilt drive unit 31 tilts the mounting table 11 around the A axis, and the sub-scan of the mounting table 11 sandwiches the A axis. One side in the direction is lowered, and the other side in the sub-scanning direction of the mounting table 11 is raised. Further, when the A axis is provided close to one end of the work surface 11a in the sub-scanning direction, the A axis tilt driving unit 31 is provided with the A axis when the mounting table 11 is tilted around the A axis. The height of the other side of the mounting table 11 in the sub-scanning direction is not changed, and one side of the mounting table 11 in the sub-scanning direction is lowered.

  As described above, according to the third embodiment, since the mounting table 11 can be tilted around the A axis, when the three-dimensional structure 5 has a portion protruding in the sub-scanning direction, the A axis is the center. By tilting the mounting table 11, the protruding part can be tilted so as to be in the vertical direction from the sub-scanning direction. And the overhang | projection site | part can be modeled with the inkjet head 14 along a perpendicular direction. Therefore, the projecting part can be modeled along the vertical direction, and the three-dimensional model 5 can be modeled while further suppressing the modeling of the support material.

[Embodiment 4]
Next, the three-dimensional modeling apparatus 35 according to the fourth embodiment will be described with reference to FIG. In the fourth embodiment, parts that are different from those in the first to third embodiments will be described in order to avoid duplicate descriptions, and parts that have the same configuration as those in the first to third embodiments will be described with the same reference numerals. FIG. 6 is a schematic diagram illustrating a part of the three-dimensional modeling apparatus according to the fourth embodiment.

  In the three-dimensional modeling apparatus 35 of Embodiment 4, the control unit 18 changes the number of unit layers stacked in the main scanning direction. When the control unit 18 tilts the mounting table 11 to form a unit layer, the control unit 18 compares the number of unit layers on the far side away from the inkjet head 14 (that is, one side of the mounting table 11 lowered). The number of unit layers on the side close to the inkjet head 14 (that is, the other side of the raised mounting table 11) is reduced. That is, the controller 18 increases the number of unit layers on the side farther from the inkjet head 14 and increases the number of unit layers on the side closer to the inkjet head 14 when generating slice data based on the modeling data. Slice data is generated so that there are few.

  As described above, according to the fourth embodiment, in the main scanning direction of the inclined mounting table 11, the number of unit layers on the side farther from the inkjet head 14 is increased, and the unit layer on the side closer to the inkjet head 14 is increased. By reducing the number of layers, the thickness of the far-side modeling material with a large movement amount can be increased, and the thickness of the near-side modeling material with a small movement amount can be reduced.

[Embodiment 5]
Next, the three-dimensional modeling apparatus 40 according to the fifth embodiment will be described with reference to FIG. In the fifth embodiment, in order to avoid redundant description, portions different from the first to fourth embodiments will be described, and portions having the same configurations as those of the first to fourth embodiments will be described with the same reference numerals. FIG. 7 is a schematic diagram illustrating a part of the three-dimensional modeling apparatus according to the fifth embodiment.

  The three-dimensional modeling apparatus 40 according to the fifth embodiment further includes a flattening roller 41 for flattening the surface of the ultraviolet curable ink layer that is in a state before the unit layer is cured. The flattening roller 41 is mounted on the carriage 13 and flattens the surface of the ultraviolet curable ink layer as the carriage 13 moves along the main scanning direction. The flattening roller 41 has a width in the axial direction wider than that of the three-dimensional structure 5. The flattening roller 41 moves along the main scanning direction to flatten the surface of the ultraviolet curable ink layer so that it is parallel to the horizontal plane.

  When the control unit 18 forms the unit layer while tilting the mounting table 11, the control unit 18 first tilts the mounting table 11 by a predetermined tilt angle, and then ultraviolet rays from the inkjet head 14 toward the mounting table 11 after tilting. The curable ink is ejected to form an ultraviolet curable ink layer which is a unit layer before curing. Thereafter, the controller 18 flattens the surface of the ultraviolet curable ink layer by scraping off the unnecessary ultraviolet curable ink which becomes an excess portion with the flattening roller 41 with respect to the ultraviolet curable ink layer. To do. Thereafter, the flattened ultraviolet curable ink layer becomes a unit layer by being cured by being irradiated with ultraviolet rays from the ultraviolet irradiator 15.

  As described above, according to the fifth embodiment, the unit layer that is modeled while the mounting table 11 is tilted can be flattened by the flattening roller 41, so that the unit layer has an appropriate thickness. The three-dimensional model 5 can be modeled suitably.

DESCRIPTION OF SYMBOLS 1,30,35,40 Three-dimensional modeling apparatus 5 Three-dimensional modeling object 11 Mounting stand 11a Work surface 12 Y bar 13 Carriage 14 Inkjet head 15 Ultraviolet irradiator 16 Carriage drive part 17 Mounting stand drive part 17a Vertical direction moving part 17b Subscanning Direction moving unit 17c Axis rotating unit 17d B-axis tilt drive unit 18 Control unit 19 Input unit 20 Display unit 31 A-axis tilt drive unit 41 Flattening roller

Claims (8)

In the three-dimensional modeling apparatus that cures the functional ink discharged toward the work surface and forms a three-dimensional object on the work surface,
A mounting table having the work surface;
A droplet discharge head for discharging the functional ink toward the work surface;
A head drive unit for moving the droplet discharge head in the main scanning direction;
B-axis tilt drive for tilting the mounting table about a C-axis extending in a direction perpendicular to the work surface of the mounting table and a B-axis extending in a direction perpendicular to the main scanning direction. A three-dimensional modeling apparatus.   The three-dimensional modeling apparatus according to claim 1, wherein the B axis is provided at a center of the work surface in the main scanning direction.   The three-dimensional modeling apparatus according to claim 1, wherein the B axis is provided on one side of the work surface in the main scanning direction.   4. The three-dimensional modeling apparatus according to claim 1, further comprising a C-axis rotation driving unit that rotates the mounting table around the C-axis. 5.   5. The apparatus according to claim 1, further comprising an A-axis tilting drive unit that tilts the mounting table around an A-axis extending in a direction orthogonal to the B-axis and the C-axis. The three-dimensional modeling apparatus according to item 1. A control unit for controlling the droplet discharge head, the head driving unit, and the B-axis tilt driving unit;
When the functional ink is ejected from the droplet ejection head while the mounting table is tilted by the B-axis tilt driving unit, the control unit is arranged on the side farther from the droplet ejection head in the main scanning direction. 6. The three-dimensional image according to claim 1, wherein a discharge amount of the functional ink closer to the droplet discharge head is reduced as compared with a discharge amount of the functional ink. Modeling equipment. A control unit for controlling the droplet discharge head, the head driving unit, and the B-axis tilt driving unit;
The three-dimensional modeled object is modeled by laminating a unit layer, which is a layered modeling material obtained by curing the functional ink, on the work surface,
When the functional ink is ejected from the droplet ejection head while the mounting table is tilted by the B-axis tilt driving unit, the control unit is arranged on the side farther from the droplet ejection head in the main scanning direction. 6. The three-dimensional modeling apparatus according to claim 1, wherein the number of layers of the modeling material closer to the droplet discharge head is reduced as compared with the number of stacks of the modeling material. . The three-dimensional modeled object is modeled by laminating a unit layer, which is a layered modeling material obtained by curing the functional ink, on the work surface,
Removing a surplus portion of the unit layer before curing to planarize the unit layer after curing;
A control unit for controlling the droplet discharge head, the head driving unit, the B-axis tilt driving unit, and the flattening roller;
When the functional ink is ejected from the droplet ejection head while the mounting table is tilted by the B-axis tilt driving unit, the unit before curing is cured by the flattening roller for each unit layer. The three-dimensional modeling apparatus according to any one of claims 1 to 5, wherein an excess portion of the layer is removed.

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