JP2013067117A - Setting data generation device for three-dimensional shaping apparatus, three-dimensional shaping apparatus, setting data generation program for the same, and computer-readable recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress thermal deformation of a three-dimensional shaped article.SOLUTION: This setting data generation device for a three-dimensional shaping apparatus for shaping one or more three-dimensional shaped articles on a shaping plate by using a shaping material includes: an input means 61 for acquiring three-dimensional data of the one or more shaped articles; a candidate position determination means 64a to determine candidate positions for arranging the three-dimensional data of the one or more shaped articles as objects in a descending order of cooling performance based on distribution of the cooling performance on the shaping plate; and an arrangement means 64b to arrange the objects acquired by the input means at the candidate positions determined by the candidate position determination means 64a.

Description

  The present invention relates to a setting data creation device for a three-dimensional modeling apparatus, a three-dimensional modeling apparatus, a setting data creation program for a three-dimensional modeling apparatus, and a computer-readable recording medium for producing a three-dimensional modeling object.

  Conventionally, three-dimensional data, which is basic data of a modeled object, is set to an arbitrary posture on a computer screen, and each cross section cut by a plurality of surfaces parallel to the height direction based on the set posture. 2. Description of the Related Art There is known an apparatus that generates data and performs three-dimensional modeling by sequentially laminating resins on the basis of two-dimensional data related to each layer to generate a three-dimensional model of a three-dimensional model. In particular, in the field of rapid prototyping (RP), which is used for prototyping in product development, an additive manufacturing method capable of three-dimensional molding is used. The additive manufacturing method slices the three-dimensional CAD data of a product, creates the original data of production by superimposing thin plates, and laminates materials such as powder, resin, steel plate, paper, etc. Create As such a layered modeling method, an inkjet method, a powder method, an optical modeling method, a sheet lamination method, an extrusion method, and the like are known.

  In such a three-dimensional modeling apparatus, generally, setting data for modeling a modeled object is created using a three-dimensional modeling program. For example, three-dimensional data of a model created in advance by another three-dimensional CAD program is read by the three-dimensional modeling program, this three-dimensional data is placed on the modeling plate as an object, and the arrangement and orientation are determined. The data is converted into a format that can be read by the original modeling apparatus, and the converted modeling data is transmitted to the 3D modeling apparatus main body.

Special table 2003-535712 gazette

  In a three-dimensional modeling apparatus that molds a model with such a resin, deformation of the model due to heat may be a problem. For example, reaction heat is generated when a resin as a modeling material is cured by a UV lamp. This will be described with reference to FIGS. First, as shown in FIG. 26 (a), the upper surface as shown in FIG. 26 (b) in a state where an uncured resin is further applied in a liquid state onto the resin that has been discharged to the modeling plate 40 and has already been cured. Then, ultraviolet light is irradiated by a UV lamp or the like to cause a curing reaction of the uncured resin. As a result, as shown in FIG. 26 (c), the resin is cured to complete a modeled object. At this time, reaction heat of the resin is generated, and the temperature rises to about 80 ° C. inside the resin. As a result, the inside of the resin becomes a high temperature and gradually shrinks as time passes, but heat shrinkage occurs, and deformations such as distortion and warping are the same as in normal resin molding as shown in FIG. Occur.

  However, conventionally, such a difference in cooling capacity depending on the arrangement position has not been considered. Conversely, as a procedure for determining the arrangement of a modeled object (object) arranged on the modeling plate, it has been considered to reduce the modeling time and the amount of consumed resin. That is, in a three-dimensional modeling apparatus that models a modeled object with resin, the time required for modeling and the amount of resin vary greatly depending on the arrangement position and orientation of the object of the modeling target arranged on the modeling plate. Therefore, conventionally, an attempt has been made to find a setting value that can be modeled in the shortest possible time by adjusting the arrangement position and orientation of the object on the modeling plate and that can reduce the required amount of resin.

  For example, as shown in the plan view of the modeling plate 40 in FIG. 27, if the object is arranged at a position close to the XY origin OD of the XY plane that drives the head unit, the modeling time can be reduced. In this figure, the XY origin OD is the upper left, the X direction is the horizontal direction, and the Y direction is the vertical direction. Since the object is arranged close to the XY origin OD of the head portion, the moving distance of the head portion is reduced. Therefore, the time required for moving the head is saved, and the total modeling time can be shortened.

  On the other hand, in the example of the plan view of FIG. 27, an intake port IT that absorbs outside air as cooling air is provided at the lower side in the drawing, and an exhaust port EX is provided at the upper side. As a result, from the viewpoint of the cooling capacity, the lower intake side in the figure is superior, and the upper exhaust side is inferior, and as a result, the cooling efficiency of the object disposed above is deteriorated, resulting in heat There was a problem of large deformation.

  The present invention has been made in view of such conventional problems. Main objects of the present invention are a setting data creation device for a three-dimensional modeling apparatus capable of suppressing thermal deformation of a modeled object, a three-dimensional modeling apparatus, a setting data creation program for a three-dimensional modeling apparatus, and a computer-readable recording To provide a medium.

Means for Solving the Problems and Effects of the Invention

  In order to achieve the above object, according to the setting data creation device for a three-dimensional modeling apparatus according to the first aspect of the present invention, one or more three-dimensional modeling objects can be formed using a modeling material. 40 is a setting data creation device for a three-dimensional modeling apparatus that models on the basis of the input means 61 for acquiring three-dimensional data of one or more modeling objects and the distribution of cooling performance on the modeling plate 40, Candidate position determining means 64a for determining candidate positions for arranging three-dimensional data of the one or more shaped objects as objects in descending order of cooling performance; and candidate positions determined by the candidate position determining means 64a at the input means Arrangement means 64b for arranging the acquired object can be provided. Thereby, according to the distribution of the cooling performance on the modeling plate, the modeled object can be arranged at a position suitable for heat dissipation, and the heat dissipation of the modeled object is enhanced to suppress thermal shrinkage and reduce deformation after curing. Benefits that can be obtained.

  Further, according to the setting data creation apparatus for the three-dimensional modeling apparatus according to the second aspect, among the objects acquired by the input means, the deformation amount that is thermally deformed by the heat generated when the modeled object is cured is the largest. Selection means for selecting a modeled object is provided, and the arranging means 64b can be configured to arrange the modeled object selected by the selecting means at the candidate position determined by the candidate position determining means 64a. Thereby, a deformation amount can be suppressed by arrange | positioning the modeling thing with the largest thermal deformation amount at the time of hardening in the position with the highest cooling performance.

  Furthermore, according to the setting data creation device for the three-dimensional modeling apparatus according to the third aspect, the selection unit calculates a modeled object having the largest thermal deformation amount according to the shape of the one or more modeled objects. You can choose. Thereby, a modeled object with a large amount of thermal deformation can be automatically calculated and selected on the apparatus side, and further, the arrangement of the selected modeled object can be automated.

  Furthermore, according to the setting data creation device for a three-dimensional modeling apparatus according to the fourth aspect, the selection unit can be a unit that prompts the user to select a model that is not desired to be thermally deformed. Thereby, it can arrange | position on a modeling plate so that the user may select a desired modeling object directly, and the thermal deformation of the selected modeling object is suppressed.

  Furthermore, according to the setting data creation device for the three-dimensional modeling apparatus according to the fifth aspect, the candidate position determining means 64a determines the distribution of the cooling performance on the modeling plate 40 in the modeling in the three-dimensional modeling apparatus. This can be determined by the position of the intake port IT for introducing the cooling gas into the modeling region MR where the plate 40 is disposed or the position of the exhaust port EX for discharging the cooling gas from the modeling region MR. As a result, the position close to the intake port for taking in the fresh cooling gas into the modeling area has a high cooling capacity, i.e., the cooling performance, or conversely the position close to the discharge port for discharging the cooling gas whose temperature has increased due to the progress of heat exchange. Assuming that the cooling performance is low, the distribution of cooling performance can be determined.

  Furthermore, according to the setting data creation device for a three-dimensional modeling apparatus according to the sixth aspect, the selection means has a deformation amount that is thermally deformed by heat generated when the model corresponding to the one or more objects is cured. In addition, a parameter for setting which one of the plurality of modeling parameters including the modeling time required for the three-dimensional modeling corresponding to the one or more objects and the usage amount of the modeling material required for modeling the model to be given priority The setting means 63 can also be used. This makes it possible to set an optimum posture for each of multiple objects, eliminating the problem that the posture of a small object could not be set to the optimum posture even if there were multiple objects. it can.

  Furthermore, according to the setting data creation device for the three-dimensional modeling apparatus according to the seventh aspect, the posture of the object is optimized based on the priority of the modeling parameters set by the parameter setting unit 63. Computation means 64 for computation is provided, and the computation means 64 can be configured to be able to calculate an optimum posture individually for each of a plurality of objects.

  Furthermore, according to the setting data creation device for the three-dimensional modeling apparatus according to the eighth aspect, the calculation unit 64 minimizes the amount of modeling material used in the modeling parameters or minimizes the modeling time. The optimum posture of the object to be operated can be calculated.

  Furthermore, according to the setting data creation device for the three-dimensional modeling apparatus according to the ninth aspect, the three-dimensional modeling apparatus has a model material MA that becomes a final modeled object as a modeling material on the modeling plate 40, and By repeating the operation of supporting the overhanging portion where the model material MA overhangs and discharging the support material SA that is finally removed while scanning in at least one direction and curing the support material SA in the height direction. Slices having a predetermined thickness can be generated in layers, and modeling can be performed by stacking the slices in the height direction.

  Furthermore, according to the setting data creation device for the three-dimensional modeling apparatus according to the tenth aspect, the display means 62 for displaying a plurality of objects indicating the modeled object specified by the inputted three-dimensional data is further provided. The display means 62 can be configured to display the posture of each object in a state where the support material SA is added to the model material MA.

  Furthermore, according to the three-dimensional modeling apparatus according to the eleventh aspect, the height direction is determined by repeating the operation of discharging and curing the modeling material on the modeling plate 40 in at least one direction. A three-dimensional modeling apparatus that performs modeling by generating slices having a predetermined thickness in layers and laminating the slices in the height direction, the modeling for placing one or more modeling objects Plate 40, modeling material discharge means for discharging the modeling material, head part 20 supporting the modeling material discharge means, and discharge of the modeling material by the modeling material discharge means while moving the head part And control means 10 for controlling curing, and based on the distribution of cooling performance on the modeling plate 40, the one or more modeling objects are placed on the modeling plate 40 in descending order of cooling performance. It can be configured to be shaped by location. Thereby, according to the distribution of the cooling performance on the modeling plate, the modeled object can be arranged at a position suitable for heat dissipation, and the heat dissipation of the modeled object is enhanced to suppress thermal shrinkage and reduce deformation after curing. Benefits that can be obtained.

  Furthermore, according to the three-dimensional modeling apparatus according to the twelfth aspect, the selection of the one or more modeling objects that has the largest deformation amount that is thermally deformed by heat generated when the modeling object is cured is selected. And a modeling object selected by the selection means can be arranged and modeled on the modeling plate 40 at a position having the highest cooling performance. Thereby, the modeling object with the largest amount of thermal deformation at the time of hardening can be cooled as much as possible, and such a deformation | transformation can be suppressed.

  Furthermore, according to the three-dimensional modeling apparatus according to the thirteenth aspect, the selection unit can calculate and select a modeled object having the largest amount of thermal deformation according to the shape of the one or more modeled objects. Thereby, a modeled object with a large amount of thermal deformation can be automatically calculated and selected on the apparatus side, and further, the arrangement of the selected modeled object can be automated.

  Furthermore, according to the three-dimensional modeling apparatus according to the fourteenth aspect, the selection unit can be a unit that prompts the user to select a model that is not desired to be thermally deformed. Thereby, it can arrange | position on a modeling plate so that the user may select a desired modeling object directly, and the thermal deformation of the selected modeling object is suppressed.

  Furthermore, according to the three-dimensional modeling apparatus according to the fifteenth aspect, the cooling performance distribution on the modeling plate 40 introduces the cooling gas into the modeling region MR in which the modeling plate 40 is arranged in the three-dimensional modeling apparatus. It can be determined by the position of the exhaust port EX for discharging the intake port IT or the cooling gas from the modeling region MR. As a result, the position close to the intake port for taking in the fresh cooling gas into the modeling area has a high cooling capacity, i.e., the cooling performance, or conversely the position close to the discharge port for discharging the cooling gas whose temperature has increased due to the progress of heat exchange. Assuming that the cooling performance is low, the distribution of cooling performance can be determined.

  Furthermore, according to the three-dimensional modeling apparatus according to the sixteenth side surface, the modeling plate 40 has a rectangular shape extending in one direction, and is close to the substantially center of the rectangular shape so that the intake port IT is Can be provided. Thereby, an air inlet can be arrange | positioned in the center of a modeling plate, and the cooling capability on a modeling plate can be approached as uniformly as possible.

  Furthermore, according to the three-dimensional modeling apparatus according to the seventeenth aspect, horizontal driving means for reciprocally scanning the head unit 20 in the horizontal direction, and the height direction of the head unit 20 and the modeling plate 40 are as follows. A vertical driving unit for moving the relative position; and a curing unit 24 for curing the modeling material. The control unit 10 reciprocally scans the head unit 20 in one direction with the horizontal driving unit. Then, the modeling object can be discharged onto the modeling plate 40 by the modeling material discharging unit, and the modeling object can be cured by the curing unit 24.

  Furthermore, according to the three-dimensional modeling apparatus according to the eighteenth aspect, the modeling material supports the model material MA to be the final modeled object and the projecting portion from which the model material MA projects, and is finally removed. The modeling material discharge means includes a model material discharge nozzle 21 for discharging the model material MA and a support material discharge nozzle 22 for discharging the support material SA. A plurality can be arranged in the direction.

  Furthermore, according to the three-dimensional modeling apparatus according to the nineteenth aspect, when the intake port IT is moved with respect to the modeling plate 40 by the horizontal driving means in the horizontal direction on the XY plane. Can be provided on the opposite side of the XY origin OD.

  Furthermore, according to the setting data creation program for the three-dimensional modeling apparatus according to the twentieth aspect, the three-dimensional modeling apparatus that models one or more three-dimensional models on the modeling plate 40 using the modeling material This is a setting data creation program for the computer, based on the input function 61 for acquiring three-dimensional data of one or more shaped objects in the computer and the distribution of the cooling performance on the modeling plate 40 in the descending order of the cooling performance. A candidate position determining function for determining candidate positions for arranging three-dimensional data of one or more shaped objects as objects, and an arrangement for arranging the object acquired by the input function at the candidate positions determined by the candidate position determining function Function and the object obtained by the input function are selected to select the model with the largest amount of deformation that is thermally deformed by the heat generated when the model is cured. Features and, to realize the placement function, the molded object selected by the selection function can be configured to place the candidate position determined by the candidate position determining function.

  Furthermore, a computer-readable recording medium according to the twenty-first aspect stores the above program. Recording media include CD-ROM, CD-R, CD-RW, flexible disk, magnetic tape, MO, DVD-ROM, DVD-RAM, DVD-R, DVD + R, DVD-RW, DVD + RW, Blu-ray, HD A medium that can store a program such as a magnetic disk such as a DVD (AOD), an optical disk, a magneto-optical disk, a semiconductor memory, or the like is included. The program includes a program distributed in a download manner through a network line such as the Internet, in addition to a program stored and distributed in the recording medium. Furthermore, the recording medium includes a device capable of recording the program, for example, a general purpose or dedicated device in which the program is mounted in a state where the program can be executed in the form of software, firmware, or the like. Furthermore, each process and function included in the program may be executed by computer-executable program software, or each part of the process or hardware may be executed by hardware such as a predetermined gate array (FPGA, ASIC), or program software. And a partial hardware module that realizes a part of hardware elements may be mixed.

1 is a block diagram illustrating a three-dimensional modeling apparatus according to Embodiment 1. FIG. It is a block diagram which shows the three-dimensional modeling apparatus which concerns on a modification. It is a top view which shows a mode that a head part is moved to XY direction. It is a perspective view which shows the external appearance of a head part. It is a top view which shows a mode that a modeling material is discharged with the head part of FIG. It is a perspective view which shows the state which removes the surplus part of modeling material with a roller part. 6 is a schematic plan view showing a priority order when arranging a plurality of objects on the modeling plate according to Embodiment 1. FIG. It is an image figure which shows the example which arrange | positions several objects on a modeling area | region giving priority to modeling time. It is an image figure which shows the example arrange | positioned preferentially with respect to the object of FIG. 10 is a schematic plan view showing a priority order when arranging a plurality of objects on a modeling plate according to Embodiment 2. FIG. FIG. 3 is a front view illustrating an air inlet of the three-dimensional modeling apparatus according to the first embodiment. 3 is a vertical sectional view of the three-dimensional modeling apparatus according to Embodiment 1. FIG. 10 is a schematic plan view showing a priority order when arranging a plurality of objects on a modeling plate according to Example 3. FIG. FIG. 10 is a schematic plan view illustrating a priority order when arranging a plurality of objects on a modeling plate according to a fourth embodiment. FIG. 10 is a schematic plan view illustrating a priority order when arranging a plurality of objects on a modeling plate according to a fifth embodiment. FIG. 10 is a schematic plan view showing a priority order when arranging a plurality of objects on a modeling plate according to Example 6; FIG. 10 is a schematic plan view showing a priority order when arranging a plurality of objects on a modeling plate according to Example 7. It is a side view which shows the state which has arrange | positioned several objects on the modeling plate giving priority to the amount of thermal deformation. It is a block diagram which shows the setting data creation apparatus for 3D modeling apparatuses. It is an image figure which shows the screen of a setting data creation program. It is an image figure which shows the "open file" dialog screen. It is an image figure which shows the example by which the object was displayed on the display column of FIG. It is an image figure which shows the example which moves the object of FIG. It is an image figure which shows a print data creation dialog. It is an image figure which shows the other example of a parameter setting means. FIG. 26A shows a state in which an uncured resin is applied on the cured resin, FIG. 26B shows a state in which the upper surface of FIG. 26A is irradiated with ultraviolet light and the uncured resin is cured. 26 (c) is a schematic cross-sectional view illustrating a state in which a model is completed, and FIG. 26 (d) is a schematic cross-sectional view illustrating a state in which the resin in FIG. 26 (c) is thermally contracted with cooling. It is a schematic top view which shows the priority which arrange | positions a modeling thing on a modeling plate.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment described below is a three-dimensional modeling apparatus, a three-dimensional modeling method, a setting data creation apparatus for a three-dimensional modeling apparatus, and setting data for a three-dimensional modeling apparatus for embodying the technical idea of the present invention. The present invention exemplifies a creation program and a computer-readable recording medium, and the present invention relates to a three-dimensional modeling apparatus, a three-dimensional modeling method, a setting data creation apparatus for a three-dimensional modeling apparatus, and setting data for a three-dimensional modeling apparatus The creation program and the computer-readable recording medium are not specified as follows. Further, the present specification by no means specifies the members shown in the claims to the members of the embodiments. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in the embodiments are not intended to limit the scope of the present invention unless otherwise specified, and are merely explanations. It's just an example. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation. Furthermore, in the following description, the same name and symbol indicate the same or the same members, and detailed description thereof will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing.
Example 1

  In FIG. 1, the block diagram of the three-dimensional modeling system 100 which concerns on Example 1 of this invention is shown. Here, an example applied to an inkjet three-dimensional modeling apparatus will be described as an example of the three-dimensional modeling apparatus. However, the present invention does not specify the three-dimensional modeling apparatus as an ink jet system, but a three-dimensional modeling apparatus using another system, for example, a powder modeling method, an optical modeling method, a sheet laminating method, an extrusion method, or the like. It can also be used. This three-dimensional modeling system 100 manufactures an arbitrary modeled object by ejecting and curing a modeling material in a fluidized state by an ink jet method, and laminating them. As the modeling material, a model material MA constituting a final modeled object and a support material SA that is modeled and finally removed to support the projecting portion from which the model material MA projects are used.

  A three-dimensional modeling system 100 shown in FIG. 1 includes a setting data creation device 1 (computer PC in FIG. 1) that sends modeling data and setting data that are modeling conditions to the three-dimensional modeling device 2, and the three-dimensional modeling device 2. Is done. The three-dimensional modeling apparatus 2 includes a control unit 10, a head unit 20, and a modeling plate 40. The head unit 20 includes a model material discharge nozzle 21 that discharges the model material MA and a support material discharge nozzle 22 that discharges the support material SA as modeling material discharge means. Further, by scraping off the excess from the discharged modeling material, the thickness of the uppermost layer of the modeling object at the time is optimized, and the roller portion 25 for smoothing the surface of the modeling material, and modeling The head unit 20 is also provided with a curing means 24 for curing the material. Further, the head portion 20 is scanned back and forth in the horizontal direction in order to discharge the modeling material from the model material discharge nozzle 21 and the support material discharge nozzle 22 to an appropriate position on the modeling plate 40 in a liquid or fluid state by an ink jet method. XY direction drive as horizontal drive means for scanning in the X direction and Y direction orthogonal to the X direction, and vertical drive means for moving the relative position in the height direction between the head portion 20 and the modeling plate 40 A unit 31 and a Z-direction drive unit 32 are provided. Here, the Y direction is an arrangement direction in which a plurality of orifices of the model material discharge nozzle 21 and the support material discharge nozzle are arranged, and the X direction is a direction orthogonal to the Y direction in a horizontal plane.

When the computer PC receives the input of the basic data of a three-dimensional shaped object, for example, model data designed by three-dimensional CAD, etc., it first converts this CAD data into, for example, STL (Stereo Lithography Data) data. Further, setting data for generating cross-sectional data obtained by slicing the STL data into a plurality of thin cross-sectional bodies and transmitting the slice data to the 3D modeling apparatus 2 in a batch or in units of each slice layer It functions as the creation device 1. At this time, corresponding to the determination of the posture on the modeling plate 40 of model data (actually, STL data after conversion) designed by three-dimensional CAD or the like, the model formed by the model material MA in this posture is supported. The position where the support material SA is provided is set for the necessary space or location, and slice data corresponding to each layer is formed based on these data. The control unit 10 includes a roller rotation speed control unit 12 and a discharge control unit 13. When the roller main body 26 individually collects the model material MA or the support material SA, the roller rotation speed control unit 12 determines whether the roller rotation speed control means 12 is a roller according to the physical characteristics of the model material MA or the support material SA discharged from each discharge nozzle. The rotational speed of the main body 26 can be changed. The control means 10 takes in the cross-sectional data from the computer PC and controls the head unit 20, the XY direction driving unit 31, and the Z direction driving unit 32 according to the data. Under the control of the control means 10, the XY direction drive unit 31 is operated, and the model material MA and the support material SA as modeling materials are formed as droplets from the model material discharge nozzle 21 and the support material discharge nozzle 22 of the head unit 20. By discharging to an appropriate position on the modeling plate 40, a cross-sectional shape based on the cross-sectional data given from the computer PC is modeled. Then, the model material MA, which is one of the modeling materials discharged onto the modeling plate 40, is at least cured to be changed from a liquid or fluid state to a solid and cured. This action creates a cross section or slice. Note that the slice data may be generated on the 3D modeling apparatus 2 side, but in that case, the modeling parameters that the operator must determine such as the thickness of each slice layer are 3D modeling from the computer PC side. Must be sent to device 2.
(slice)

  Here, the “slice” is a stacking unit in the z direction of the modeled object, and the number of slices is a value obtained by dividing the height by the stacking thickness. Actually, as a requirement for determining the thickness of each slice, the minimum unit discharge amount that can be discharged from each discharge nozzle, the variation due to the eccentricity of the roller of the roller unit 25 in the vertical direction, and the like can be set. The thickness is determined. The value set based on such a viewpoint is set as the minimum value of the slice, and thereafter, the user obtains the modeling object, for example, each slice amount can be finally determined from the viewpoint of modeling accuracy and modeling speed. . In other words, if the user chooses to give priority to modeling accuracy, each slice amount is determined by the above-described minimum slice value or a value in the vicinity thereof, while if the modeling speed is given priority, the minimum modeling accuracy is maintained. Each slice amount can be determined. Or, as another method, a method of letting the user select the ratio of modeling accuracy and modeling speed sensuously, or by letting the user input the maximum allowable modeling time, some combinations of modeling time and modeling accuracy Can be displayed as candidates, and the conditions that the user prefers can be selected.

  In addition, the modeling action for one slice data is that the model material discharge nozzle 21 and the support material discharge nozzle 22 are at least in the forward or backward path when the head unit 20 is reciprocated in the X direction (main scanning direction of the head unit 20). The modeling material is ejected from the molding material in a liquid or fluid state by an ink jet method, and the surface of the uncured modeling object is smoothed at least in the forward path or the return path in a state where the modeling object discharged on the modeling plate 40 is uncured. In order to make the roller part 25 act, a series of steps of curing the modeled object is performed at least once by irradiating the smoothed surface of the modeled object with light of a specific wavelength from the curing means 24. Of course, this number is automatically changed according to the thickness of the slice data and the required modeling accuracy. There. If the modeling material used for modeling is cured at a predetermined temperature, in the present invention, the curing means 24 can be a cooling or heating means, and if it can be naturally cured, the curing means is omitted. You can also

On the other hand, the maximum thickness formed once on the modeling plate 40 is discharged from the model material discharge nozzle 21 and the support material discharge nozzle 22 at least in the forward path or the return path, and is a cross section after landing of the discharged liquid droplets. The shape is determined by the unit discharge amount capable of retaining a substantially circular shape.
(Modeling plate 40)

  The modeling plate 40 can be moved up and down by the Z-direction drive unit 32. When one slice is formed, the Z-direction drive unit 32 is controlled by the control means 10, and the modeling plate 40 is lowered by a distance corresponding to the thickness of one slice. Then, by repeating the same operation as described above, a new slice is stacked on the upper side (upper surface) of the first slice. A thin object is formed by laminating several thin slices produced in this way.

  In addition, when the modeling object has a so-called overhang shape that protrudes in the XY plane from the modeling part positioned below in the Z direction (that is, the height direction), when the modeling object is converted into data on the computer PC If necessary, an overhang support part shape is added. In other words, a modeled object having an overhang shape is a modeled object having a part (overhang part) in which a slice of a new model material is molded on an upper surface of a part where a slice of the model material already formed does not exist. is there. And the control means 10 models overhang support part SB based on the shape of the overhang support part simultaneously with modeling of model material MA which comprises the last molded article. Specifically, the overhang support portion SB is formed by discharging a support material SA different from the model material MA from the support material discharge nozzle 22 as a droplet. After the modeling, the target three-dimensional modeled object can be obtained by removing the support material SA constituting the overhang support part SB.

  As shown in the plan view of FIG. 3, the head unit 20 is moved in the horizontal direction, that is, the XY direction by the head moving means 30. The head unit 20 is supported by an X-direction moving rail 43 that is a pair of X-direction (main scanning direction) guide mechanisms that are arranged vertically in the drawing. On the base side that supports the head unit 20, a drive unit (not shown) in the X direction is provided along one X-direction moving rail 43. In addition, a Y-shaped moving rail 44 for moving the head unit 20 in the Y direction (sub-scanning direction) is provided on a portal frame on which the head unit 20 is placed on the X-direction moving rail 43. A drive unit (not shown) for driving the head unit 20 along the Y-direction moving rail 44 is placed. With these driving units, the head unit 20 can move in the X and Y directions.

  Further, as shown in FIG. 1, the modeling plate 40 is moved in the height direction, that is, the Z direction by the plate lifting / lowering means (Z direction driving unit 32). Thereby, the relative height of the head part 20 and the modeling plate 40 can be changed, and three-dimensional modeling becomes possible. More specifically, the head unit 20 first discharges the model material MA and the support material SA as modeling materials from the model material discharge nozzle 21 and the support material discharge nozzle 22 to appropriate locations based on the slice data by the head moving unit 30. Therefore, the model material MA and the support material SA are discharged from a plurality of orifices that are reciprocated in the X direction and are provided in the discharge nozzles 21 and 22, respectively, and extend in the Y direction. Furthermore, as shown in FIG. 3, the width in the Y direction of each discharge nozzle 21, 22 is smaller than the width in the Y direction that can be formed on the modeling plate 40, and the width in the Y direction of the model data for modeling Is larger than the total length of the orifice extending in the Y direction, the reciprocating operation in the X direction at a predetermined position of each discharge nozzle 21, 22 is followed by shifting each discharge nozzle 21, 22 in the Y direction by a predetermined amount, The model material MA and the support material SA are repeatedly ejected to appropriate locations based on the slice data together with the reciprocal scanning in the X direction, thereby generating a modeled object corresponding to all set modeling data. .

In addition, in the example of FIG. 1, the plate raising / lowering means which raises / lowers the modeling plate 40 is used as the Z direction drive part 32, However, it is not restricted to this example, Like 3D modeling apparatus 2 'shown in FIG. It is also possible to employ a Z-direction drive unit 32 ′ that fixes the 40 side in the height direction and moves the head unit side in the Z direction. Further, the movement in the XY direction may be performed by fixing the head portion side and moving the modeling plate side. Further, as described above, the shift in the Y direction of the head unit 20 is not necessary if the width of each nozzle is substantially the same as the width of the modeling plate 40 in the Y direction. Even in this case, for example, for the purpose of increasing the resolution in the Y direction of the modeled object determined by the interval between the orifices provided in the nozzles, each of the orifices becomes an orifice at the time of the previous modeling by shifting the head part 20 in the Y direction. And may be shifted so that it is located between the orifice and the orifice.
(Control means 10)

  The control means 10 controls the discharge pattern of the modeling material. That is, the head member 20 is reciprocally scanned in the X direction while the model material MA and the support material SA are ejected onto the modeling plate 40 by the modeling material ejecting means in at least one of the reciprocal scanning in the X direction. Then, after the modeling material is discharged onto the modeling plate 40 by the modeling material discharging unit and at least one of the outward path and the return path, the model material MA and the support material SA are cured by the curing unit 24. Then, a slice is generated, the modeling plate 40 and the head unit 20 are moved in the height direction, and modeling is performed by repeating the stacking of slices. Although the details will be described later, the surface of the modeling material is smoothed by the roller unit 25 after the modeling material is discharged onto the modeling plate 40 by the modeling material discharge unit and the surface of the modeling material is set by the curing unit 24. Before curing, at least one of the outward path and the return path is performed.

  The control means 10 discharges either the modeling material MA or the supporting material SA in one reciprocating scan in the X direction, and smoothes the surface of the modeling material by the roller unit 25 and removes the excess material. Then, after further curing by the curing means 24, the other modeling material that was not discharged is discharged in the next and subsequent reciprocating scans, and the surface of the modeling material is smoothed and cured. By performing these series of steps at least once, one slice is generated. Needless to say, the series of steps corresponding to one slice of data includes repeating a plurality of times depending on, for example, the final surface accuracy and modeling time required by the user. As a result, either the model material MA or the support material SA can be cured individually by smoothing and curing the surface of the model material MA or the support material SA, and then discharging the other. There is an advantage that mixing at the SA interface can be effectively avoided.

In this example, the model material MA is discharged first and then the support material SA is discharged. However, the support material may be discharged first, and then the model material may be discharged. Also, in this example, one of the modeling materials is discharged first, and after this is cured, the other modeling material is discharged and cured, and the model material and the support material are separately discharged and cured. Explained how to do. However, the present invention is not limited to this method, and the model material and the support material can be discharged simultaneously.
(Modeling material)

As described above, as the modeling material, the model material MA that becomes a final modeled object and the support material SA that supports the projecting portion from which the model material MA projects and is finally removed are used.
(Curing means 24)

As the model material MA, a light curable resin, for example, an ultraviolet curable resin can be used. In this case, the curing unit 24 is a light irradiation unit that emits light including a specific wavelength at which the material of the model material MA reacts and cures, and is an ultraviolet irradiation unit such as an ultraviolet lamp. As the ultraviolet lamp, a halogen lamp, a mercury lamp, an LED or the like can be used. In this example, the support material SA is also an ultraviolet curable resin. In the case of using an ultraviolet curable resin that is cured with ultraviolet rays having the same wavelength, the same ultraviolet irradiation means can be used, and an advantage that a light source can be shared is obtained.
(Model material MA)

  A thermoplastic resin can also be used as the model material MA. In this case, the curing unit 24 serves as a cooling unit. When using a thermoplastic resin for both the model material and the support material, by adopting a model material whose melting point is higher than the melting point of the support material, the molded object is higher than the melting point of the support material after the completion of lamination, The support material can be melted and removed by heating and keeping the temperature lower than the melting point of the model material. Furthermore, one of the model material and the support material can be a photo-curing resin, and the other can be a thermoplastic resin.

Alternatively, a material that can be cured by a chemical reaction with the curing material can be used as the model material. Further, the model material may be mixed with a liquid modifier as necessary in order to adjust the jetting characteristics such as viscosity and surface tension. Also, the injection characteristics can be changed by adjusting the temperature. Other examples of the model material include an ultraviolet photopolymer, an epoxy resin, an acrylic resin, and urethane.
(Support material SA)

As the support material SA, basically, the same material as the model material described above can be used. However, it is desirable to add a removable material to a material similar to the model material from the viewpoint that the support material is finally a material that can be easily removed. Therefore, specifically, water swelling gel, wax, thermoplastic resin, water-soluble material, soluble material and the like can be used. For the removal of the support material SA, a method such as separation using a thermal expansion difference, which is dissolved by power washing such as aqueous solution, heating, chemical reaction, water pressure washing, or electromagnetic wave irradiation, depending on the properties of the support material, can be used as appropriate. .
(Head 20)

  FIG. 4 shows an example of the head unit 20 of the inkjet three-dimensional modeling apparatus. The head unit 20 shown in this figure is provided with a dedicated discharge nozzle that individually discharges the model material MA and the support material SA as a modeling material discharge means. Specifically, a model material discharge nozzle 21 for discharging the model material MA and a support material discharge nozzle 22 for discharging the support material SA are provided in parallel with each other. Each discharge nozzle is provided with two nozzle rows 23, and these nozzle rows 23 are arranged so as to be shifted by a half nozzle as shown in the plan view of FIG. 5, thereby improving the resolution. The nozzle rows 23 arranged in the offset state are arranged so that the model material discharge nozzle 21 and the support material discharge nozzle 22 are aligned on the same line, thereby matching the resolution of the model material and the support material. I am letting.

  In the head portion 20, a support material discharge nozzle 22, a model material discharge nozzle 21, a roller portion 25, and a curing unit 24 are integrally provided from the left. Each discharge nozzle discharges an ink-shaped modeling material in the manner of a piezoelectric element type ink jet print head. The modeling material is adjusted to a viscosity that can be discharged from the discharge nozzle.

  In the example of FIG. 4, after the head portion 20 discharges the model material MA first, the support material SA is discharged. In addition, the head unit 20 discharges the modeling material on the outward path (left to right in the figure), and on the return path (right to left in the figure), scrapes excess resin from the outermost surface of the modeling material by the roller unit 25 to achieve smoothing. Thereafter, the smoothed resin is cured by the curing means 24.

Further, the head unit 20 shown in the example of FIG. 4 is divided into an ejection head unit 20A provided with an ejection nozzle and a recovery / curing head unit 20B provided with a roller unit and a curing means. Between the discharge head unit 20A and the recovery / curing head unit 20B, a rail guide 45 through which a Y-direction moving rail 44 for moving the head unit 20 is provided. As shown in the plan view of FIG. 3, the head unit 20 reciprocates in the Y direction along the Y direction moving rail 44. Further, both ends of the Y-direction moving rail 44 are supported by the head moving means 30. The head moving means 30 reciprocates in the X direction along a pair of X direction moving rails 43 provided in parallel along the top and bottom of the modeling plate so as to straddle the modeling plate 40 in the vertical direction. Thereby, the head unit 20 can move to an arbitrary position on the XY plane on the modeling plate.
(Surplus resin recovery mechanism)

The head unit 20 further includes a surplus resin recovery mechanism for recovering the excessively discharged resin. That is, in the inkjet type three-dimensional molding machine, in order to perform accurate modeling, extra modeling material such as model material and support material is discharged, and the surplus amount of resin discharged on the modeling plate 40 is Modeling is performed while collecting with the surplus resin recovery mechanism. Such a surplus resin recovery mechanism is shown in the schematic diagram of FIG. The surplus resin recovery mechanism shown in this figure presses the surface of the discharged model material MA and support material SA in an uncured state, removes surplus portions of the modeling material, and smoothes the surface of the modeling material The roller unit 25 is used. The example of FIG. 6 shows a state in which the surface of the discharged model material MA is leveled by the roller body 26 in an uncured state.
(Roller part 25)

  The roller unit 25 includes a roller main body 26 that is a rotating body, a blade 27 that is disposed so as to protrude from the surface of the roller main body 26, a bus 28 that stores a modeling material scraped off by the blade 27, and a bus 28. And a suction pipe 29 for discharging the modeling material accumulated in the container. The roller body 26 is rotatably supported, and the uncured resin is pressed while rotating, so that the surplus portion is scraped and collected while leveling the surface of the resin. The roller body 26 is rotated counterclockwise (clockwise in FIG. 6) with respect to the traveling direction of the head portion 20, and scrapes off the uncured modeling material. The modeling material thus scraped up adheres to the roller body 26 and is carried to the blade 27, and then scraped off by the blade 27 and guided to the bus 28. For this reason, the blade 27 is disposed at a position behind the roller body 26 with respect to the traveling direction when the roller body 26 abuts on the resin surface, and is fixed in a downward gradient toward the bus 28. Similarly, the bath (bath) 28 is also disposed on the same side as the blade 27 with respect to the roller body 26 and is disposed below the blade 27. The suction pipe 29 is connected to a pump, and sucks and discharges the modeling material accumulated in the bus 28. In this example, the outer shape of the roller body 26 is about φ20 mm, and the rotation speed is about 10 rotations / s.

  The roller portion 25 scrapes off when the head portion 20 advances from the right to the left in the drawing. In other words, when the model material MA and the support material SA are discharged from the model material discharge nozzle 21 and the support material discharge nozzle 22 to the appropriate positions based on the slice data while the head portion 20 advances from the left to the right, respectively. The roller portion 25 does not contact the modeling material, and similarly, illumination from the light source of the curing means 24 is not performed. In the illustration of the main scanning direction from the left to the right of the head unit 20 in the figure, the main scanning direction as a return path from the right to the left after at least the modeling material is discharged from the nozzles 21 and 22 in the forward path. Then, the above-described scraping operation of the roller unit 25 is performed, and at least the curing means 24 as a light source for irradiating light for curing the model material MA is also operated.

  The light source of the curing unit 24 is disposed forward of the model material discharge nozzle 21 and the support material discharge nozzle 22 with respect to the traveling direction. Therefore, even when the light source is turned on, the light is discharged and smoothed by the roller unit 25. The flowable resin before irradiation is not irradiated. On the other hand, it is of course possible to turn off the light source of the curing means 24 except when it is actively required. On the other hand, a plurality of curing means may be provided. For example, a first curing unit and a second curing unit are provided as the curing unit, and the resin after discharge is preliminarily cured by the first curing unit, and then the resin is further cured by the second curing unit. Thus, by making a hardening means multistage structure, the hardening ability of resin can fully be exhibited. In such a case, if the first curing means remains in preliminary curing and sufficient fluidity still remains in the resin after passing through the first curing means, the roller after the preliminary curing by the first curing means The excess resin may be scraped off at the portion, and then cured by the second curing means. That is, it is not always necessary that all the curing means be disposed on the next stage side of the roller portion.

  As shown in FIGS. 1 and 4, the roller portion 25 is disposed in front of the curing means 24, on the left side in the figure, with respect to the traveling direction of the head portion 20. As a result, after the uncured modeling material is scraped off by the roller unit 25 first, the curing means 24 cures the modeling material. With such an arrangement, the modeling material can be scraped and cured in the same pass, and the advantage of being able to be processed efficiently is obtained.

  The basic concept of the arrangement of the support material discharge nozzle 22, the model material discharge nozzle 21, the roller unit 25, and the curing means 24 along the X-axis direction is as follows. Considering the forward direction of the head unit 20 in the main scanning direction as a base, one of the support material discharge nozzle 22 and the model material discharge nozzle 21 may be positioned in front of the other. With respect to such a nozzle layout, the roller unit 25 and the curing means 24, when it is desired to perform the action of the roller in the forward path, in the forward travel direction, behind the support material discharge nozzle 22 and the model material discharge nozzle 21 When the roller unit 25 and the curing means 24 are arranged in this order and the action of the rollers is to be performed in the return path, the roller unit 25 and the support material discharge nozzle 22 and the model material discharge nozzle 21 are moved backward in the direction of travel of the return path. What is necessary is just to arrange | position in order of the hardening means 24.

  Moreover, in the said Example, after discharging resin for becoming a new uppermost layer from the head part 20, with respect to the resin layer of the uncured uppermost layer in the middle of modeling, the excess resin by the roller part 25 of After scraping, a method of irradiating UV light for curing at least the uppermost resin layer by the curing means 24 was adopted.

However, in addition to this configuration, the curing means can be configured in multiple stages as described above. For example, after a resin for forming a new uppermost layer is discharged from the head unit 20, the uppermost layer including the surplus resin layer is once irradiated with light by the curing unit 24, and then the uncured state of the uppermost layer in the middle of modeling is irradiated. There is also a method in which the upper resin layer is scraped off by the roller portion 25 and then irradiated with UV light for curing at least the uppermost resin layer by the curing means 24 again. In this case, the curing means 24 is provided with a pair of curing means in the head portion 20 in the front-rear direction sandwiching the support material discharge nozzle 22 and the model material discharge nozzle 21 in the X direction, that is, the main scanning direction of the head portion 20. Thus, the above-described irradiation can be performed twice. In this case, the first irradiation and the second irradiation are combined to finally achieve the desired degree of curing of the resin, so the resin after the first irradiation is not in a cured state, For the subsequent scraping operation by the roller portion 25, the semi-cured state is flowable. For this reason, also in this case, the state of the uppermost layer before scraping off the resin by the roller portion 25 is expressed as an uncured state or a flowable state.
(Heat dissipation of modeling material)

  On the other hand, the modeling material discharged onto the modeling plate 40 generates heat during curing. For example, as shown in FIGS. 26A to 26D, reaction heat is generated when a resin that is a modeling material is cured by a UV lamp. The reaction heat depends on the type of resin to be used, but is, for example, about 80 ° C. inside the molded article. For this reason, the inside of the resin becomes a high temperature, and in the same way as in the case of normal resin molding, heat shrinkage occurs, and deformation such as distortion and warpage occurs in the finally obtained shaped article. In order to suppress such deformation of the resin due to heat, it is preferable to cool the molded resin efficiently. Another type of resin is a thermoplastic resin. This resin is held at a predetermined temperature or higher to ensure fluidity until it is discharged, and after being discharged onto the modeling plate 40, it is necessary to quickly hold it at the position where it is discharged. It is preferable to perform proper cooling.

  In the present embodiment, in consideration of cooling of a modeled object formed of such a resin, the resin discharge position is determined so that the modeled object is arranged on the modeling plate 40 at a position advantageous for cooling. In other words, the arrangement of the modeled object on the modeling plate 40 is determined. For the modeling space including the modeling plate 40, the position of the outside air inlet that is formed on the front surface portion of the three-dimensional modeling apparatus 2 and supplies outside air to the modeling space including the modeling plate 40, and the air in the modeling space are externally supplied. The cooling performance distribution and the cooling distribution during modeling exist on the modeling plate 40 due to the position of the air discharge port for discharging to the head and the influence of the heat generating member provided in the head 20 disposed in the modeling space. For this reason, the cooling capacity varies depending on the arrangement position of the modeled object (object) arranged on the modeling plate 40. However, conventionally, such a difference in cooling capacity depending on the arrangement position has not been taken into consideration, and as for the arrangement of the modeled object on the modeling plate 40, there has been nothing but an emphasis on reducing the modeling time and the amount of consumed resin. That is, although the amount of thermal deformation of the modeled object depends on the position on the modeling plate 40, the user cannot usually know such a position, and further, the conventional automatic placement on the modeling plate 40 further requires molding time and consumption. Since there was only a method that emphasized the suppression of the amount of resin, there was no arrangement method that realized a molding that wanted to suppress deformation of a modeled object.

For example, in the plan view showing the modeling plate 40 of FIG. 27, the object is arranged at a position close to the XY origin OD (driving origin) of the XY plane for driving the head portion, so that the movement time of the head portion is reduced and the total is achieved. The molding time is reduced. In the figure, [1], [2], and [3] indicate positions where the shaped objects are arranged. On the other hand, in this example, with respect to the modeling region MR in which the modeling plate 40 is arranged inside the three-dimensional modeling apparatus, the inlet IT for taking in cooling air from the outside is downward (in the front part of the three-dimensional modeling apparatus). In the drawing, the exhaust port EX is provided above (showing the position of the central part in the apparatus width direction on the back surface of the three-dimensional modeling apparatus). The lower the intake side, the better the cooling capacity, and the lower the exhaust side, the worse. As a result, in the arrangement example of FIG. 27, thermal deformation increases.
(Heat deformation suppression function)

  Therefore, as shown in FIG. 7, by providing a thermal deformation suppression function that changes the arrangement position of the object on the modeling plate 40 instead of the XY origin OD side in the arrangement order giving priority to the intake port IT side, The effect which suppresses the amount of thermal deformation of a molded article is acquired. In the example of FIG. 7, the center position of the intake port IT is given the highest priority as the position having the highest cooling capacity, and then the left and right sides thereof, the side closer to the XY origin OD (left side in FIG. 7), and the opposite side Priorities are defined in the order of (right side in FIG. 7). By setting the arrangement priority in this way, it is possible to perform modeling in consideration of not only reducing the amount of thermal deformation but also shortening the modeling time. Note that the positions of the intake port IN and the exhaust port EX in the three-dimensional modeling apparatus in FIG. 7 are the same as those in FIG. 27 described above.

  The arrangement of objects in consideration of the suppression of the amount of thermal deformation is automatically calculated by the arrangement means 64b in the block diagram of the setting data creation apparatus for the three-dimensional modeling apparatus shown in FIG. Will be described later). For example, FIG. 8 shows a conventional arrangement example in which modeling time is emphasized when arranging a plurality of objects on the modeling region MR. Also in this example, if an intake port IT is provided on the front side and an exhaust port EX is provided on the far side in the figure, the arrangement of FIG. 8 is likely to have poor heat dissipation and a large amount of thermal deformation. When these objects are changed to an arrangement example that takes into account the amount of thermal deformation, as shown in FIG. 9, the arrangement is moved to the front side (the intake port IT side).

  At this time, which object is arranged at the position having the highest cooling capacity can be determined by whether the shape of the object is a shape in which the amount of thermal deformation is likely to be significant. In general, as a flat plate has a larger area and a smaller thickness, the influence of thermal deformation becomes more obvious. Therefore, among the plurality of objects, an object having a shape in which the amount of thermal deformation is likely to be significant is calculated by a parameter relating to the shape (for example, area, thickness) by the selection means, and a priority is automatically given, The arrangement position is determined according to this priority. When modeling a plurality of modeling objects at once, a modeling object having the largest area parallel to the XY plane and the smallest thickness in the Z direction is arranged on the modeling plate 40 in the vicinity of the inlet port IN. This means that the flow of wind is improved toward the exhaust port EX arranged in the vicinity of the rear surface of the device opposite to the intake port, and the possibility of increasing the cooling effect on the shaped object arranged at other positions is increased. effective.

  Alternatively, when the user individually designates a desired object for which thermal deformation is to be suppressed, the designated object can be arranged at a position having a high cooling capacity (for example, the intake port IT side). In particular, the user can individually specify objects that are not desired to be thermally deformed, so that the amount of heat deformation can be suppressed for a desired object, so that modeling suitable for the user's intention can be obtained. When such designation is performed, the selection unit is used as an input unit similar to the parameter setting unit 63 (described later).

  Furthermore, when arranging the objects, it is possible to combine not only the thermal deformation amount but also a known modeling parameter such as a required resin amount and a modeling time as a modeling parameter described later. For example, a modeled object arrangement in which two parameters of thermal deformation amount and modeling time are preferentially considered can be considered. In this case, as one method, the actual modeling space, that is, the 40 areas on the modeling plate, is divided into a plurality of parts, and the cooling efficiency weighting for each area is obtained by experiment of the actual machine, while the efficiency of the modeling time is considered. By combining the arrangement of the modeled object, it is possible to obtain the modeled object arrangement that preferentially takes into account two parameters of the amount of thermal deformation and the modeling time.

  When determining a more accurate layout, the order of the height of the modeled object in the Y direction (sub-scanning direction) of the modeling plate, in other words, the direction from the inlet port IN to the exhaust port EX, and the modeled object and the modeled item It is preferable to consider the distance from the object.

  In addition, for example, a molded object arrangement that preferentially considers two parameters of the amount of thermal deformation and the amount of resin used can be considered. In this case, as one method, the actual modeling space, that is, the 40 areas on the modeling plate is divided into a plurality of parts, and the cooling efficiency weighting for each area is obtained by experiment of the actual machine, while considering the suppression of the amount of resin used. By combining the arrangement of the modeled object, it is possible to obtain a modeled object arrangement that preferentially takes into account two parameters of the amount of thermal deformation and the amount of resin used.

  In addition, the amount of thermal deformation can be combined with the parameters from another viewpoint from the above viewpoint, but the specific method is the position and size of the intake port provided in the 3D modeling apparatus and the position of the exhaust port. It is necessary to obtain an optimum method for each actual machine in consideration of the size and size of the intake fan, and the position and performance of the intake fan that may be used as additional specifications, and the control method.

Moreover, about each modeling object, after making the attitude | position with respect to the modeling plate 40 determined by a user, the mode which calculates only arrangement | positioning on an XY plane by the apparatus side, and the attitude | position including rotation of each modeling object In addition, a fully automatic mode for obtaining an optimum arrangement for each parameter on the XY plane may be set.
(Inlet IT)

In the example of FIG. 7, the modeling plate 40 has a rectangular shape extending in one direction, and the air inlet IT is opened close to the substantially center of the rectangular shape. By doing in this way, it becomes possible to reduce as much as possible that the distribution of the cooling capacity on the modeling plate 40 is non-uniform, and to suppress the occurrence of unevenness in the cooling capacity for each position.
(Example 2)

Further, the position of the intake port IT is not limited to the example of FIG. 7, and can be provided at different positions. In particular, if it is arranged on the side close to the XY origin OD, it is possible to achieve both a reduction in the amount of thermal deformation and a reduction in the modeling time. Such an example is shown in FIG. In the example of FIG. 10, the arrangement of the intake port IT is arranged on the back side (upper side in the figure) opposite to FIG. 7, and the exhaust port EX is arranged on the front side (lower side in the figure) accordingly. Yes. In this case, the upper center having the highest heat dissipation in the figure is set as the priority position, and then the XY origin OD side (upper left in the figure), which is advantageous in terms of modeling time, and the opposite side (in the figure) The arrangement position is determined in the order of (upper right). With this arrangement, modeling that satisfies both thermal deformation and modeling time is possible.
When an actual actual machine is considered, the layout based on FIG. 10 is arranged such that the intake port IN is arranged on the front surface of the 3D modeling apparatus, and the operation start origin position (XY origin OD) of the head unit 20 is similarly set to that of the 3D apparatus. It is preferable to change to the front side and set the exhaust port EX to the rear side of the apparatus.

  Furthermore, in the above example, as shown in the front view of FIG. 11, the inlet IT is indicated by a broken line in the example of FIG. 11, with the opening width being substantially coincident with the center in the width direction of the modeling plate 40. It opens in a slit shape that is substantially equal to or slightly narrower than the length direction (X direction) of the modeling plate 40. Further, the opening height of the air inlet IT is designed so that the outside air sucked from the air inlet IT is exposed to the modeled object stacked on the modeling plate 40. In this example, the modeling plate 40 descends as modeling, that is, stacking progresses, but the modeled object also becomes higher, so that the outside air is always exposed to the height position during modeling. Further, a cooling fan is forced to flow by providing a blower fan on the intake side, the exhaust side, or both. In the example shown in the vertical sectional view of FIG. 12, a blower fan is provided in the vicinity of the exhaust port EX. The cooling air radiates heat by exchanging heat of each drive member in addition to the heat of curing generated when the resin is cured.

  Furthermore, a deodorizing filter FT for deodorizing is disposed on the cooling air path. In the example of FIG. 12, the cooling air taken from the air inlet IT provided on the front surface is once collected through the duct on the rear side, guided downward, and passed through the deodorizing filter FT. The deodorizing filter FT realizes a deodorizing function by the action of activated carbon or the like, and thereby deodorizes a specific odor generated by the molding resin during curing. The deodorized cooling air is discharged from an exhaust port EX provided below the back surface.

Further, in the above example, the intake port IT and the exhaust port EX are opened in a horizontally long slit shape on the front side and the back side of the three-dimensional modeling apparatus. Thereby, the cooling air can be made to flow in a strip shape along the upper surface of the modeling plate 40, and variation in temperature difference in the length direction of the modeling plate 40, that is, the X direction (horizontal direction in FIG. 7) is suppressed. Uniform cooling can be expected for each slice formed.
(Example 3)

However, the intake port IT and the exhaust port EX are not limited to such a configuration. For example, as illustrated in FIG. . In the example of FIG. 13, air is sucked in from the side facing the XY origin OD (lower left in the figure), and the exhaust port EX is provided on the opposite side of the modeling plate 40 on the diagonal line. In this configuration, the air inlet IT is narrowed to relatively increase the flow velocity of the cooling air, but it is not easy to uniformly disperse the cooling air on the modeling plate 40 and the distribution of the cooling capacity may not be uniform. is there. For this reason, for example, a configuration such as providing a duct or a baffle plate for dispersing the cooling air or providing a plurality of intake ports IT is added as necessary. Further, it is also possible to provide a symmetrical arrangement with respect to FIG. 13, that is, an intake port IT on the lower right side of the modeling plate 40 and an exhaust port EX on the upper left side in the drawing.
Example 4

Alternatively, as shown in FIG. 14 as the fourth embodiment, an intake port IT may be provided on the upper left side and an exhaust port EX may be provided on the lower right side in the drawing on the XY origin OD side. In this case, since the XY origin OD is on the intake side, that is, the position having the highest cooling capacity, by arranging the object to be modeled at this position, it is possible to achieve both suppression of the amount of thermal deformation and shortening of the modeling time. be able to.
(Examples 5 and 6)

On the other hand, in such an arrangement example, since the head portion is disposed on the intake port IT side, the cooling air sucked from the intake port IT is turbulent in the head portion, thereby generating turbulence, It may be difficult to flow the cooling air uniformly in the region MR. In particular, in a pair of X-direction moving rails 43 provided in parallel to the upper and lower surfaces of the modeling plate 40 along the X direction of the modeling plate 40, in the gate-supporting dual-support type that supports the head portion, the X-direction moving rail 43 In this case, the cooling air may be obstructed and turbulent flow may occur. Therefore, as shown in FIG. 15 (Embodiment 5) or FIG. 16 (Embodiment 6), an inlet port IT and an outlet port EX are provided on the side surface side of the three-dimensional modeling apparatus to suppress the occurrence of turbulent flow, and smooth A uniform cooling effect can be expected. With such an arrangement, it is possible to suppress the occurrence of turbulence while providing the inlet IT in the vicinity of the XY origin OD. In particular, in the example of FIG. 15, by arranging the intake port IT close to the XY origin OD, it is possible to achieve both a reduction in the amount of thermal deformation and a reduction in the modeling time.
(Example 7)

  Alternatively, the X-direction moving rail 43 may be provided only on one side along the X direction of the modeling plate 40 as shown in FIG. It is good also as a cantilever type which moves a head part in a Y direction with an arm extended in the cantilever type from this X direction movement rail 43. With this configuration, since only one X-direction moving rail 43 is required, it is possible to somewhat suppress the situation in which the cooling air flowing from the intake port IT is hindered or turbulent flow is generated. In particular, by omitting the X-direction moving rail 43 on the intake side, it is possible to suppress a situation in which cooling air collides with the X-direction moving rail 43 and turbulence occurs. Further, as shown in FIGS. 15 and 16, the generation of turbulent flow by the X-direction moving rail 43 can also be expected by flowing cooling air along the X-direction moving rail 43.

  As described above, when an object that is susceptible to thermal deformation is arranged on the intake port IT side by the thermal deformation suppression function, and as shown in FIG. On the EX side, an object that is relatively less affected by thermal deformation is arranged. In this case, an object that is generally susceptible to thermal deformation is a thin object having a large area and a small thickness, for example, a plate-like object. Conversely, an object having a small area and a large thickness is relatively less affected by thermal deformation. As a result, the objects arranged on the modeling plate 40 by the thermal deformation suppression function are arranged so that the average height gradually increases from the intake side to the exhaust side as shown in the side view of FIG. It becomes. In this case, the cooling air flows from the surface of the modeling plate 40 so as to gradually increase as it proceeds. Such an arrangement makes it possible to directly expose the cooling air to the cooling air even if the object is arranged on the back side among the objects arranged in a plurality of rows. This is advantageous in that it can be demonstrated. Conversely, if a tall object is placed on the windward side of the cooling air and a short object is placed on the leeward side, the object on the back becomes a shadow of the tall object, so it can be directly affected by the cooling air. The cooling effect is significantly reduced. Thus, according to the thermal deformation suppression function, an arrangement suitable for heat exchange between the cooling air and the object is realized. In this case, for example, as shown in FIG. 12, by making the height on the exhaust side higher than that on the intake side, the cooling air is likely to flow in a gradually increasing direction, and a smoother cooling effect is expected. it can.

In the above example, only the position of the intake port IT and the exhaust port EX is considered as a factor that defines the distribution of the cooling performance on the modeling plate 40. However, the distribution of the cooling performance is considered in consideration of other factors. You may prescribe. For example, when a heat source such as a power semiconductor used in the drive circuit of the head unit is adjacent to the modeling plate 40, the temperature near the heat source is high. it can. For this reason, when determining a position where the temperature is low and the cooling capacity is high, the position can be determined in consideration of the existence of such a heat source.
(Setting data creation device for 3D modeling equipment)

  Next, a setting data creation apparatus that instructs such three-dimensional modeling apparatus to provide data of a model will be described based on the block diagram of FIG. The setting data creation device 1 for a 3D modeling apparatus shown in this figure includes an input means 61 for acquiring 3D data such as CAD data, and the acquired 3D data, for example, STL (Stereo Lithography Data) data. Display means 62 for three-dimensionally displaying an object that is defined by the three-dimensional data converted into the three-dimensional data, parameter setting means 63 for setting a modeling parameter, and an object according to the set modeling parameter Calculating means 64 for calculating the optimum posture and arrangement position, and adjusting means for the user to finely adjust the optimum posture and optimum position calculated by the computing means 64 or to manually adjust the desired position and posture. 65, the setting data for driving the 3D modeling apparatus according to the determined posture and position are converted into a data format that can be read by the 3D modeling apparatus. To, and output means 66 for outputting the 3D modeling apparatus.

  In addition, as described above, as an example of the three-dimensional modeling apparatus, a setting data creating apparatus that sends setting data of a three-dimensional shaped object to the inkjet three-dimensional modeling apparatus will be described. Does not specify the three-dimensional modeling apparatus to be used as an inkjet system, and is an effective technique as long as it is a three-dimensional modeling apparatus that uses a UV curable resin or a thermoplastic resin even in other systems.

  As described above, the ink jet method is a method in which, after jetting a liquefied material, at least the material of the model material MA reacts and cures light including a specific wavelength, for example, ultraviolet light (UV), or is cooled. Is formed by curing. According to this method, since the principle of the ink jet printer can be applied, there is an advantage that high definition can be easily achieved.

  As described above, the resin lamination type three-dimensional modeling apparatus has two types, namely, the model material MA that is the final modeled object and the support material SA that is finally removed after supporting the overhanging portion of the model material MA. The modeling material is ejected onto the modeling plate 40 while scanning in the XY directions, and modeling is performed by stacking in the height direction. The model material MA and the support material SA, which are modeling materials, are made of a resin having a property of being cured by irradiation with ultraviolet light. As the curing means 24 for curing the modeling material, an ultraviolet lamp for irradiating ultraviolet light is scanned in the XY direction together with the nozzle for discharging the model material MA and the support material SA, and the model material MA and the support material discharged from the nozzle. The SA is cured by irradiation with ultraviolet light.

This setting data creation apparatus is realized by a setting data creation program executed by a general purpose or dedicated computer, in addition to being configured by dedicated hardware. Here, an example in which a setting data creation program is installed in a commercially available personal computer to form a setting data creation device will be described based on the user interface screens shown in FIGS. FIG. 20 is a screen image after starting the setting data creation program. In this figure, an object display column 68 for configuring the display unit 62 is provided on the left side, and an operation column 70 for performing various operations, which configures the adjustment unit 65 and the parameter setting unit 63, is provided on the right side. Each is arranged.
(Display field 68)

In the display column 68, a state in which the object is virtually arranged on the modeling plate 40 can be displayed. On the modeling plate 40, a modeling region MR for performing three-dimensional modeling is displayed in a box shape. The modeling region MR is a region that can be modeled on the modeling plate 40, and an object is arranged within this range to create setting data for performing actual three-dimensional modeling. The object is displayed three-dimensionally, and the viewpoint can be changed to an arbitrary position. A viewpoint change icon 69 for easily switching the viewpoint is provided at the upper right of the display column 68. The viewpoint change icon 69 shows a plan view of the modeling plate 40 as viewed from information, and eight camera-like icons are provided around it. In other words, if you click on one of these camera-like icons provided at an interval of 45 degrees in a 360-degree field of view directed to an arbitrary center in the XY plane, in the example, the virtual center point of the modeling plate, The viewpoint can be changed from the selected direction to the virtual center point of the modeling plate and from the corresponding direction with respect to the plan view. It is also possible to switch to two-dimensional display. Of course, the user can also finely adjust or adjust the viewing direction by dragging the cursor displayed on the screen after selecting a specific camera position or without directly selecting a camera.
(Operation column 70)

In the operation column 70, buttons for performing various operations with a mouse or keyboard input device connected to the computer are arranged. Note that as one form of the adjusting means 65 for moving an object, the adjusting means includes an operation for moving the object by a mouse operation or the like in the display field 68 in addition to the operation by the operation field 70.
(Object list 71)

In the upper part of the operation column 70, an object list 71 for displaying a list of objects is provided. In this column, all objects currently displayed in the display column 68 are displayed, and information such as the name of the object and the presence / absence of surface finish is displayed. Also, operations such as selecting a plurality of objects can be performed here.
(Object generation field 72)

In the middle, an object generation field 72 for generating an object is provided, and buttons for performing operations such as input and deletion of the object are arranged. These buttons constitute input means 61. Specifically, from the left, a “read” button 73 for inputting object data, a “copy” button 74 for copying an object, and a deletion of a selected object “ A “delete” button 75 is provided.
(Manual operation column 76)

Further, below the object generation field 72, a manual operation field 76 for displaying information about the selected object and making detailed settings is provided. Here, the position, rotation angle, size, enlargement / reduction ratio, etc. of the object can be adjusted. The adjustment can be performed by directly inputting a numerical value, increasing / decreasing with an increase / decrease button, or changing continuously with a mouse or the like. It is also possible to perform operations such as maintaining the ratio of size such as length and width during enlargement / reduction, or selecting surface finish.
(Automatic operation column 78)

Further, an automatic operation column 78 for performing automatic setting is provided in the lower part of the manual operation column 76. Here, an “optimal posture” button 80 for executing an optimal posture determination function for automatically calculating the optimal posture of the object, and an “optimal placement” button 81 for executing an optimal position determination function for automatically calculating the optimal position of the object. And an “estimate” button 82 for calculating the modeling time. When the “estimate” button 83 is pressed, the modeling time predicted according to the current setting is calculated and displayed in the predicted modeling time display field. A radio button 63A for selecting either the minimum modeling time or the minimum usage amount of the modeling material is provided below the “optimum posture” button 80 as the parameter setting means 63 for specifying the modeling parameters. ing. As described above, in addition to or instead of the function of selecting either the modeling time minimum or the modeling material usage minimum as the parameter setting means 63, the ratio between the modeling accuracy and the modeling speed is set by the user. By letting the user input the maximum modeling time that can be selected sensuously, by displaying the combination of several modeling times and modeling accuracy as candidates, the user can select the conditions that the user prefers Is also possible. Needless to say, when the user selects either the modeling time minimum or the modeling material usage minimum as the parameter setting means 63 and presses the “estimate” button 83, the modeling time predicted according to the current setting is set. Calculated.
(Output means 66)

Further, a “print” button 84 for executing 3D modeling is arranged as an output means 66 at the lower right of the operation column 70. When the “print” button 84 is pressed, for example, the setting data, which is each slice data of the converted STL data, is output from the output unit 66 to the 3D modeling apparatus in a batch or in units of each slice data. The print command is instructed and 3D modeling is started.
(Input means 61)

  The input unit 61 is a unit for taking in the three-dimensional data in which the shape of the modeled object is created in advance by three-dimensional CAD or the like. As the three-dimensional data, data created in accordance with a standardized general purpose or dedicated data format can be used. For example, STL, STEP, IGES, Parasolid, ACIS, HSF, NGRAIN, OBJ, DXF, VRML, XVL, HTML, etc. Is available. In the example of FIG. 20, when the “read” button 73 in the object generation column 72 is pressed as an example of the input means 61, the “open file” dialog screen 85 shown in FIG. From this screen, the user selects a desired STL file as three-dimensional data. Also, on the right side of the screen, the content of the currently selected 3D data is displayed as a preview, making it easy for the user to select a data file.

  When three-dimensional data is selected by the input means 61, an object defined by the selected three-dimensional data is displayed in the display column 68 of FIG. 20 after being converted into STL data, for example. This is shown in FIG. From the screen of FIG. 22, the user can select the object OB1 using the adjusting means 65 and move it to an arbitrary position, or change it to an arbitrary posture such as tilt or rotation. FIG. 23 shows an example in which the object OB1 is moved while being rotated and inclined. In this specification, the movement of the object is used to include rotation and inclination.

  In the example of FIGS. 22 and 23, only one object OB1 is displayed. However, a plurality of three-dimensional data can be taken from the input means 61 and arranged at an arbitrary position. In addition, a plurality of objects can be arranged on the modeling plate 40 by copying one input object. Furthermore, it is possible to delete an arbitrary object. These operations are performed by operating the “copy” button 74 and the “delete” button 75 in the object generation field 72 described above.

The user selects either the minimum modeling time or the minimum usage amount of the modeling material as the parameter setting means 63 for specifying the modeling parameters described above arbitrarily, and pressing the “optimum posture” button 80, After the position and orientation of the object OB1 are determined by the adjusting unit 65, when the “print” button 84 in the operation column 70 is pressed, setting data is output from the output unit 66 to the 3D modeling apparatus. Specifically, a print data creation dialog 86 as shown in FIG. 24 is displayed, and setting data in a format that can be read by the 3D modeling apparatus, which is a 3D printer, is generated and transferred to the 3D modeling apparatus. As described above, the user can create setting data using the setting data creation device, and can instruct the modeling to the three-dimensional modeling device.
(Parameter setting means 63)

On the other hand, the setting data creation apparatus shown in FIG. 19 includes parameter setting means 63 and calculation means 64. In accordance with the general optimization conditions set by the parameter setting unit 63, the calculation unit 64 calculates the optimal posture and optimal position of the object. The parameter setting unit 63 also functions as a selection unit that selects a modeled object having the largest deformation amount that is thermally deformed by the heat generated when the modeled object is cured, among the objects acquired by the input unit.
(Modeling parameters)

  In the three-dimensional modeling, the amount of the required model material MA is invariant regardless of the posture and position of the object, but the amount of the support material SA that supports this depends on the posture and arrangement state of the model material MA. Change. Therefore, it can be said that the smaller the amount of the support material used, the more efficient the molding can be done while suppressing the consumption of the expensive support material.

On the other hand, a three-dimensional modeling apparatus generally has a problem that a modeling time is relatively long. For example, in an inkjet three-dimensional modeling apparatus, a model material MA and a support material SA are used as modeling materials, and these modeling materials are ejected while reciprocating the head portion 20 on the modeling plate 40 to slice one layer. Mold. Since the slice is sequentially laminated from the lower layer to obtain a modeled object having a desired height, the number of slices increases as the modeled object height increases, and the modeling time increases accordingly. For this reason, it is important to reduce the height of the shaped object placed on the modeling plate 40.
(Parameter setting means 63)

As described above, the optimum posture and position of the object change depending on which one of the minimum modeling time and the minimum usage amount of the modeling material is given priority. In other words, it can be said that these are modeling parameters that define conditions for three-dimensional modeling. Therefore, the user designates, using the parameter setting means 63, which one of the modeling parameters is given priority for the three-dimensional modeling. For this reason, the parameter setting means 63 is used to set which of the plurality of modeling parameters is to be subjected to the three-dimensional modeling that is to be prioritized and minimized.
(Support material contact area)

  In addition, the modeling parameter is not limited to the modeling time and the usage amount of the modeling material (support material SA in the ink jet method), and can include other indexes. For example, an area where the support material and the model material are in contact with each other can also be defined as a modeling parameter. In particular, in the case of the inkjet method, the surface of the model material that is in contact with the support material becomes rough and the interface between the model material and the support material in an uncured state at the time of modeling As a result of the mixing of the support material, the surface of the model material after curing becomes cloudy, and the transparency and texture are worse than the surface where the support material is not joined, resulting in a matte mat surface. On the other hand, the surface of the model material that is not in contact with the support material is a glossy surface that is glossy or glossy. As the surface finish, it is sometimes required to have a glossy surface, that is, a glossy surface as much as possible, or in other words, to reduce the matte surface, since the glossy surface looks better. Therefore, minimizing the contact area of the support material to the model material surface, that is, the mat surface, can also be used as a modeling parameter to be taken into consideration when setting the three-dimensional modeling conditions.

  An example of the parameter setting unit 63 is the radio button 63A provided in the operation column 70 of FIG. In the example of FIG. 20, either the modeling time minimum or the resin amount minimum can be specified as the modeling parameter.

  Another example of the parameter setting unit 63 is shown in FIG. In the modeling parameter setting dialog 63B shown in this figure, the modeling time, the usage amount of the modeling material, and the priority order of the support material contact area can be defined as the modeling parameters. In this example, for all of the modeling parameters, which are all of the minimum time, the minimum resin amount, and the minimum mat surface, the user is allowed to specify the priority order for determining the optimal posture and position of modeling with numerical values. At that time, by not inputting a numerical value for a parameter that is determined to be unnecessary for prioritization, it can be excluded from the calculation for determining the optimum posture and position of modeling.

Furthermore, as a modeling parameter, in addition to or instead of these modeling time and resin amount, thermal deformation of a model can be added as described above. As described above, the candidate position determination unit 64a calculates the arrangement position of the object on the modeling plate 40 so as to be a position suitable for heat dissipation according to the heat distribution on the modeling plate 40.
(Calculation means 64)

  The computing unit 64 performs computation so that the posture and position of the object are optimized based on the priority of the modeling parameters set by the parameter setting unit 63. Here, when there are a plurality of objects, the calculation means 64 can calculate the optimum posture and the optimum position for each object. Further, the calculation means 64 includes the function of the candidate position determination means 64a as shown in FIG. 19, and performs calculation so that the modeled object is arranged at a position advantageous for cooling the modeled object.

  The setting data creation apparatus for the 3D modeling apparatus of the present invention, the 3D modeling apparatus, the setting data creation program for the 3D modeling apparatus, and the computer-readable recording medium are 3D in which an ultraviolet curable resin is laminated by an inkjet method. It can be suitably used for modeling.

DESCRIPTION OF SYMBOLS 100 ... Three-dimensional modeling system 1 ... Setting data creation apparatus 2, 2 '... Three-dimensional modeling apparatus 10 ... Control means 12 ... Roller rotational speed control means 13 ... Discharge control means 20 ... Head part; 20A ... Discharge head unit; 20B ... Recovery curing head unit 21 ... model material discharge nozzle 22 ... support material discharge nozzle 23 ... nozzle row 24 ... curing means 25 ... roller section 26 ... roller body 27 ... blade 28 ... bus 29 ... suction pipe 30 ... head moving means 31 ... XY Direction driving part 32, 32 '... Z direction driving part 40 ... Modeling plate 43 ... X direction moving rail 44 ... Y direction moving rail 45 ... Rail guide 61 ... Input means 62 ... Display means 63 ... Parameter setting means 63A ... Radio button; 63B ... Modeling parameter setting dialog 64 ... Calculating means; 64a ... Candidate position determining means; 64b ... Arranging means 5 ... Adjusting means 66 ... Output means 68 ... Display field 69 ... View change icon 70 ... Operation field 71 ... Object list 72 ... Object generation field 73 ... "Read" button 74 ... "Copy" button 75 ... "Delete" button 76 ... Manual operation field 77 ... "Surface finish" field 78 ... Automatic operation field 80 ... "Optimum posture" button 81 ... "Optimum placement" button 82 ... "Estimate" button 84 ... "Print" button 85 ... "Open file" dialog Screen 86 ... Print data creation dialog MA ... Model material SA ... Support material PC ... Computer SB ... Overhang support MR ... Modeling area OB1 ... Object OD ... XY origin IT ... Intake port EX ... Exhaust port FT ... Deodorizing filter

Claims (21)

A setting data creation device for a three-dimensional modeling apparatus that models one or more three-dimensional shaped objects on a modeling plate (40) using a modeling material,
Input means (61) for obtaining three-dimensional data of one or more shaped objects;
Based on the distribution of cooling performance on the modeling plate (40), candidate position determining means (64a) for determining candidate positions for arranging the three-dimensional data of the one or more modeling objects as objects in descending order of cooling performance;
Placement means (64b) for placing the object acquired by the input means at the candidate position determined by the candidate position determination means (64a),
A setting data creation device for a three-dimensional modeling apparatus. A setting data creation device for a three-dimensional modeling apparatus according to claim 1, further comprising:
Among the objects acquired by the input means, comprising a selection means for selecting a modeled object having the largest deformation amount that is thermally deformed by heat generated when the modeled object is cured,
The arrangement unit (64b) is configured to arrange the modeled object selected by the selection unit at the candidate position determined by the candidate position determination unit (64a). Setting data creation device. A setting data creation device for a 3D modeling apparatus according to claim 2,
A setting data creating apparatus for a three-dimensional modeling apparatus, wherein the selection means calculates and selects a modeled object having the largest amount of thermal deformation according to the shape of the one or more modeled objects. A setting data creation device for a 3D modeling apparatus according to claim 2,
The setting data creating apparatus for a three-dimensional modeling apparatus, wherein the selection means is means for prompting a user to select a modeled object that is not desired to be thermally deformed. A setting data creation device for a three-dimensional modeling apparatus according to any one of claims 1 to 4,
The candidate position determining means (64a) is an inlet for introducing cooling gas into the modeling region (MR) in which the modeling plate (40) is arranged in the three-dimensional modeling apparatus, the distribution of the cooling performance on the modeling plate (40). (3) A setting data creation device for a three-dimensional modeling apparatus, characterized in that it is determined by the position of an exhaust port (EX) for discharging the (IT) or cooling gas from the modeling region (MR). A setting data creation device for a three-dimensional modeling apparatus according to any one of claims 1 to 5,
In addition to the amount of deformation in which the selection means is thermally deformed by the heat generated when the model corresponding to the one or more objects is cured, the modeling time required for three-dimensional modeling corresponding to the one or more objects, and modeling of the model A setting data creation device for a three-dimensional modeling apparatus, which also serves as parameter setting means (63) for setting which one of a plurality of modeling parameters including the amount of modeling material required for the processing is prioritized. A setting data creation device for a three-dimensional modeling apparatus according to claim 6, further comprising:
Based on the priority of the modeling parameters set by the parameter setting means (63), the calculation means (64) for calculating so that the posture of the object is optimal,
A setting data creation apparatus for a three-dimensional modeling apparatus, wherein the calculation means (64) is configured to be able to individually calculate an optimum posture for each of a plurality of objects. A setting data creation device for a three-dimensional modeling apparatus according to claim 7,
The calculation means (64) is configured to be able to calculate the optimal posture of an object that minimizes the amount of modeling material used among modeling parameters or minimizes modeling time, Setting data creation device for the device. A setting data creation device for a three-dimensional modeling apparatus according to any one of claims 1 to 8,
As a modeling material, the 3D modeling device is on the modeling plate (40).
Model material (MA) that will be the final model,
Supporting the projecting portion where the model material (MA) projects, and the support material (SA) finally removed,
By repeating the operation of ejecting while curing in at least one direction and curing this, slices having a predetermined thickness in the height direction are generated in layers, and the slices are stacked in the height direction. A setting data creation device for a three-dimensional modeling apparatus, characterized in that modeling is performed. A setting data creation device for a three-dimensional modeling apparatus according to any one of claims 1 to 9, further comprising:
Provided with a display means (62) for displaying a plurality of objects indicating a modeled object defined by the input three-dimensional data,
In the display means (62), the posture of each object is configured to be displayed in a state where the support material (SA) is added to the model material (MA). Setting data creation device. On the modeling plate (40), by repeating the operation of discharging the modeling material while scanning it in at least one direction and curing it, a slice having a predetermined thickness in the height direction is generated in layers, and the slice Is a three-dimensional modeling apparatus that models by stacking in the height direction,
The modeling plate (40) for mounting one or more modeling objects;
Modeling material discharge means for discharging the modeling material;
A head portion (20) for supporting the modeling material discharge means;
Control means (10) for controlling the ejection and curing of the modeling material by the modeling material ejection means while moving the head part,
With
Based on the cooling performance distribution on the modeling plate (40), the one or more modeling objects are arranged on the modeling plate (40) in the order of higher cooling performance, and are configured to model. 3D modeling equipment. The three-dimensional modeling apparatus according to claim 11, further comprising:
Among the one or more modeled objects, a selection means for selecting a modeled object having the largest deformation amount that is thermally deformed by heat generated when the modeled object is cured is provided.
The three-dimensional modeling apparatus, wherein the modeled object selected by the selecting means is configured to be arranged and modeled on the modeling plate (40) at a position having the highest cooling performance. A three-dimensional modeling apparatus according to claim 12,
The three-dimensional modeling apparatus, wherein the selection means calculates and selects a modeled object having the largest amount of thermal deformation according to the shape of the one or more modeled objects. A three-dimensional modeling apparatus according to claim 12,
The three-dimensional modeling apparatus, wherein the selection unit is a unit that prompts the user to select a model that is not desired to be thermally deformed. A three-dimensional modeling apparatus according to any one of claims 11 to 14,
The cooling performance distribution on the modeling plate (40) is an inlet (IT) or cooling gas into the modeling area (MR) where the modeling plate (40) is arranged in the three-dimensional modeling apparatus. A three-dimensional modeling apparatus characterized by being determined by the position of an exhaust port (EX) for discharging from (MR). The three-dimensional modeling apparatus according to claim 15,
The modeling plate (40) is a rectangular shape extending in one direction,
A three-dimensional modeling apparatus, characterized in that the intake port (IT) is provided in the vicinity of the substantially center of the rectangular shape. The three-dimensional modeling apparatus according to any one of claims 15 and 16, further comprising:
Horizontal driving means for reciprocating the head portion (20) in the horizontal direction;
Vertical driving means for moving the relative position in the height direction of the head portion (20) and the modeling plate (40);
Curing means (24) for curing the modeling material;
With
The control means (10) reciprocally scans the head portion (20) in one direction with the horizontal driving means, and causes the modeling material discharge means to discharge the modeling object onto the modeling plate (40). A three-dimensional modeling apparatus, wherein the modeled object is cured by the curing means (24). A three-dimensional modeling apparatus according to any one of claims 15 to 17,
The modeling material
Model material (MA) that will be the final model,
Supporting the projecting portion where the model material (MA) projects, and the support material (SA) finally removed,
Including
The modeling material discharge means is
A plurality of model material discharge nozzles (21) for discharging the model material (MA) and a plurality of support material discharge nozzles (22) for discharging the support material (SA) are arranged in one direction. A three-dimensional modeling apparatus characterized by this. A three-dimensional modeling apparatus according to claim 17 or 18,
The suction port (IT) is opposite to the side where the XY origin (OD) is present when the head unit is moved in the XY plane in the horizontal direction with respect to the modeling plate (40) by the horizontal driving means. A three-dimensional modeling apparatus characterized by being provided in A setting data creation program for a three-dimensional modeling apparatus that models one or more three-dimensional shaped objects on a modeling plate (40) using a modeling material,
An input function (61) for acquiring three-dimensional data of one or more objects;
Based on the distribution of the cooling performance on the modeling plate (40), a candidate position determination function for determining a candidate position to arrange the three-dimensional data of the one or more objects as an object in order of high cooling performance;
An arrangement function for arranging the object acquired by the input function at the candidate position determined by the candidate position determination function;
A selection function for selecting a modeled object having the largest amount of deformation that is thermally deformed by heat generated during curing of the modeled object among the objects acquired by the input function;
Realized,
The arrangement function is configured to arrange the modeling object selected by the selection function at a candidate position determined by the candidate position determination function, and a setting data creation program for a three-dimensional modeling apparatus .   A computer-readable recording medium storing the program according to claim 20.