3D Modeling System

Abstract

The present invention relates to a three-dimensional modeling system, and provides a technology capable of reducing the possibility that a photographing unit is affected by the heat accompanying modeling. The three-dimensional modeling system comprises: a modeling unit having a heater for plasticizing a material to generate a modeling material and a nozzle for ejecting the modeling material; a stage having a modeling surface on which modeling materials are stacked; a position changing unit for changing the relative position of the stage and the nozzle; a photographing unit, which is arranged on the outside of the outer edge of the modeling surface when viewed from a direction perpendicular to the modeling surface; a shell having an inner wall for dividing an internal space and an outer wall in contact with external air, and accommodating the modeling surface in the internal space; and a control unit, which controls the modeling unit and the position changing unit based on modeling data, and models a three-dimensional modeling object on the modeling surface in the shell, wherein at least a portion of the inner wall is composed of a first transparent component, and the photographing unit is arranged between the inner wall and the outer wall, and is configured to photograph the three-dimensional modeling object on the modeling surface accommodated in the internal space via the first transparent component.

Description

Technical Field

[0001] The present disclosure relates to a three-dimensional modeling system. Background Art

[0002] Patent Document 1 discloses a three-dimensional modeling device equipped with a camera. The three-dimensional modeling device captures an image of a modeling object being modeled by the camera and transmits the image to a remote location.

[0003] Patent Document 1: Japanese Patent Application No. 2015-507250

[0004] By arranging the imaging unit near the shaping area where the three-dimensional object is shaped, the object can be finely photographed. However, if the imaging unit is arranged near the shaping area, the imaging unit may be affected by the heat accompanying the shaping. Summary of the invention

[0005] According to the first mode of the present disclosure, a three-dimensional modeling system is provided. The three-dimensional modeling system comprises: a modeling unit having a heater for plasticizing a material to generate a modeling material and a nozzle for ejecting the modeling material; a stage having a modeling surface on which the modeling material is stacked; a position changing unit for changing the relative position of the stage and the nozzle; a photographing unit arranged at a position further outward than the outer edge of the modeling surface when viewed from a direction perpendicular to the modeling surface; a shell having an inner wall for dividing an internal space and an outer wall in contact with external air, and accommodating the modeling surface in the internal space; and a control unit for controlling the modeling unit and the position changing unit based on modeling data to model a three-dimensional modeling object on the modeling surface in the shell, at least a portion of the inner wall being composed of a first transparent component, and the photographing unit being arranged between the inner wall and the outer wall, and being configured to photograph the three-dimensional modeling object on the modeling surface accommodated in the internal space via the first transparent component. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is an explanatory diagram showing a schematic structure of a three-dimensional modeling system.

[0007] Figure 2 It is a diagram showing the configuration of the imaging unit.

[0008] Figure 3 It is a perspective view showing a schematic structure of a planar spiral.

[0009] Figure 4 It is a schematic top view of the barrel.

[0010] Figure 5 It is an explanatory diagram of the shaping process executed in the control unit.

[0011] Figure 6 It is an explanatory diagram showing a schematic configuration of an information processing device.

[0012] Figure 7 It is a diagram showing an example of attribute information.

[0013] Figure 8 This is a flowchart of the shooting process.

[0014] Fig. 9 This is an explanatory diagram of the shooting process.

[0015] Fig.10 It is a diagram showing another processing example of the imaging process.

[0016] Fig.11 This is a flowchart of the imaging process in the second embodiment.

[0017] Fig.12 It is an explanatory diagram of the imaging process in the second embodiment.

[0018] Fig.13 This is a flowchart of the formation data correction process in the third embodiment.

[0019] Fig.14 It is an explanatory diagram showing a first example of the formation data correction process.

[0020] Fig.15 It is an explanatory diagram showing a second example of the formation data correction process.

[0021] Fig.16 It is an explanatory diagram showing a third example of the formation data correction process.

[0022] Fig.17 This is a flowchart of a stereoscopic image generation process in the fourth embodiment.

[0023] Fig.18 It is an explanatory diagram of the stereoscopic image generation process.

[0024] Fig.19 It is a diagram showing a first modified example of the fourth embodiment.

[0025] Fig. 20 It is a diagram showing a second modified example of the fourth embodiment.

[0026] Description of Reference Numerals

[0027] 10: three-dimensional modeling system; 20: material supply part; 22: connecting path; 30: plasticizing part; 31: screw box; 32: driving motor; 40: plane screw; 42: groove part; 43: convex strip part; 44: material inlet; 46: central part; 47: upper surface; 48: lower surface; 50: barrel; 52: upper surface; 54: guide groove; 56: connecting hole; 58: barrel heater; 60: ejection part; 61: nozzle; 62: nozzle opening; 65: flow path; 70: ejection adjustment part; 74: first driving part; 75: suction part; 76: second driving part; 77: ejection control part; 100: three-dimensional modeling device; 101: inner wall; 102: outer wall; 103: first transparent part; 104: second transparent part; 105: housing; 106: window; 108: cover; 109: cooling unit; 110: shaping unit; 160: door; 161: first frame; 162: second frame; 163: handle; 164: first end; 165: second end; 210: loading platform; 211: shaping surface; 212: loading platform heater; 230: position changing unit; 240: shooting unit; 241: track; 242: supporting unit; 250: lighting; 300: control unit; 310: processor; 320: storage unit; 400: information processing device; 410: CPU; 420: memory; 430: storage unit; 440: communication interface; 450: input / output interface; 460: bus; 470: input device; 480: display unit. DETAILED DESCRIPTION

[0028] A. First Implementation Method:

[0029] Figure 1 1 is an explanatory diagram showing a schematic configuration of a three-dimensional modeling system 10 in the first embodiment. Figure 1 The arrows indicating the mutually orthogonal X, Y, and Z directions are shown in the figure. The X direction and the Y direction are directions parallel to the horizontal plane, and the Z direction is a direction along the vertical upward direction. The arrows indicating the X, Y, and Z directions are also shown in the directions shown in the figures. Figure 1 The corresponding manner is appropriately illustrated. In the following description, when determining the direction of a direction, the direction indicated by the arrow in each figure is set as "+", and the opposite direction is set as "-", and the positive and negative signs are used for direction marking. Hereinafter, the +Z direction is also referred to as "up", and the -Z direction is also referred to as "down".

[0030] The three-dimensional modeling system 10 includes a three-dimensional modeling apparatus 100 and an information processing apparatus 400 that communicates with the three-dimensional modeling apparatus 100. The information processing apparatus 400 and the three-dimensional modeling apparatus 100 can communicate with each other via a predetermined communication line such as the Internet or a LAN.

[0031] The three-dimensional modeling device 100 of this embodiment is a device for modeling a three-dimensional modeled object by extruding a material. The three-dimensional modeling device 100 includes a control unit 300 for controlling various parts of the three-dimensional modeling device 100. The control unit 300 and the information processing device 400 are connected in a manner that allows mutual communication. Hereinafter, the three-dimensional modeled object is also referred to as a model.

[0032] The three-dimensional modeling device 100 includes: a housing 105; a modeling unit 110 that generates a modeling material and ejects it from a nozzle 61; a stage 210 having a modeling surface 211 on which the modeling material is stacked; a position changing unit 230 that changes the relative position of the stage 210 and the nozzle 61; a photographing unit 240; and an illumination 250. The modeling surface 211 of the stage 210 is accommodated in the housing 105.

[0033] The housing 105 is provided with a door 160. The door 160 is provided with a handle 163. The user can take out the model formed in the housing 105 by opening the door 160 by holding the handle 163.

[0034] The shell 105 has an inner wall 101 that divides the internal space and an outer wall 102 that contacts the external air. The shell 105 accommodates the modeling surface 211 in the internal space. At least a part of the inner wall 101 is composed of a first transparent component 103. The first transparent component 103 is, for example, glass. When observed from the direction perpendicular to the modeling surface 211, i.e., the +Z direction, the shooting unit 240 is arranged at a position further outward than the outer edge of the modeling surface 211 in the X direction and the Y direction. The shooting unit 240 is arranged between the inner wall 101 and the outer wall 102. The shooting unit 240 shoots the model on the modeling surface 211 accommodated in the internal space via the first transparent component 103. The shooting unit 240 is connected to the control unit 300. The shooting of the model by the shooting unit 240 is controlled by the control unit 300. The shooting unit 240 is, for example, composed of a CCD camera or a CMOS camera. In addition, in other embodiments, the shooting unit 240 may also be composed of, for example, a laser scanner, LiDAR, etc. The imaging unit 240 includes an actuator capable of adjusting the imaging range of the imaging unit 24. The control unit 300 can capture an image of an arbitrary position on the shaping surface 211 by controlling the imaging unit 240.

[0035] The door 160 has a part of the inner wall 101 and a part of the outer wall 102. That is, the door 160 constitutes a part of the housing 105. The part of the inner wall 101 constituting the door 160 is constituted by the first transparent member 103. The part of the outer wall 102 constituting the door 160 is constituted by the second transparent member 104 opposite to the first transparent member 103. The second transparent member 104 is, for example, glass, similar to the first transparent member 103. The window 106 is constituted by the first transparent member 103 and the second transparent member 104 opposite to the first transparent member 103. The door 160 has a first frame portion 161 surrounding the periphery of the first transparent member 103 and a second frame portion 162 surrounding the periphery of the second transparent member 104. That is, the door 160 has the first frame portion 161 and the second frame portion 162 surrounding the window 106. The first frame portion 161 is a part of the inner wall 101, and the second frame portion 162 is a part of the outer wall 102. At least a portion of the imaging unit 240 is disposed in the upper space between the first frame portion 161 and the second frame portion 162. For example, at least a portion of the imaging unit 240 is a portion of the imaging unit 240 other than the lens of the imaging unit 240. A cover 108 covering the imaging unit 240 from the outer wall 102 side is disposed between the inner wall 101 and the outer wall 102 constituting the door 160. At least a portion of the back surface of the cover 108 faces the second transparent member 104.

[0036] Figure 2 2 is a diagram showing the configuration of the imaging unit 240. Figure 2 FIG. 2 shows a state where the door 160 is viewed from the inner space of the housing 105 in the +X direction when the door 160 is closed. Figure 2 In the figure, the first transparent member 103 and the first frame portion 161 are omitted. At least a part of the imaging unit 240 is arranged in a space at an upper corner of the space between the first frame portion 161 and the second frame portion 162 .

[0037] The door 160 has a first end 164 and a second end 165. In the present embodiment, the first end 164 is located on the -Y direction side when the door 160 is closed, and the second end 165 is located on the opposite side of the first end 164, i.e., on the +Y direction side. The first end 164 has a rotation axis, i.e., an opening and closing axis DX, for opening and closing the door 160. The distance from the imaging unit 240 to the first end 164 is shorter than the distance from the imaging unit 240 to the second end 165. In the present embodiment, the imaging unit 240 is arranged near the opening and closing axis DX of the door 160. A cooling unit 109 for cooling the imaging unit 240 is provided near the imaging unit 240. The cooling unit 109 in the present embodiment is an air-cooling fan. The cooling unit 109 may also be composed of a cooling device such as a condenser having a refrigerant flow path arranged around the imaging unit 240 and a pump for causing the refrigerant to flow in the refrigerant flow path. In addition, the cooling unit 109 may also be omitted.

[0038] Figure 1 The lighting 250 illuminates the internal space of the housing 105. The lighting 250 has an actuator capable of adjusting the lighting range. The control unit 300 can illuminate any range on the design surface 211 by controlling the lighting 250. In addition, in this embodiment, the lighting 250 can also be omitted.

[0039] The molding section 110, under the control of the control section 300, ejects the molding material after plasticizing the solid material onto the stage 210. The molding section 110 includes: a material supply section 20, which is a supply source of the raw material before being converted into the molding material; a plasticizing section 30, which converts the raw material into the molding material; and an ejecting section 60, which ejects the molding material.

[0040] The material supply unit 20 supplies the raw material MR to the plasticizing unit 30. The material supply unit 20 is composed of, for example, a hopper for storing the raw material MR. The material supply unit 20 is connected to the plasticizing unit 30 via a communication path 22. The raw material MR is put into the material supply unit 20 in the form of granules, powder, etc. As the raw material, for example, a resin material such as ABS (acrylonitrile-butadiene-styrene), PEEK (polyetheretherketone), and PP (polypropylene) is used.

[0041] The plasticizing section 30 plasticizes the raw material MR supplied from the material supply section 20 to generate a fluid pasty molding material, which is guided to the ejection section 60. In the present embodiment, "plasticization" is a concept including melting, which is a change from a solid to a fluid state. Specifically, in the case of a material that undergoes a glass transition, plasticization means making the temperature of the material above the glass transition point. In the case of a material that does not undergo a glass transition, plasticization means making the temperature of the material above the melting point.

[0042] The plasticizing part 30 has a screw box 31, a driving motor 32, a flat screw 40 and a barrel 50. The flat screw 40 is also called a rotor or a scroll. The barrel 50 is also called a screw counter-part.

[0043] The planar screw 40 is accommodated in the screw box 31. The upper surface 47 of the planar screw 40 is connected to the drive motor 32, and the planar screw 40 rotates in the screw box 31 using the rotational driving force generated by the drive motor 32. The drive motor 32 is driven under the control of the control unit 300. In addition, the planar screw 40 can also be driven by the drive motor 32 via a speed reducer.

[0044] Figure 3 4 is a perspective view showing the schematic structure of the lower surface 48 side of the plane spiral member 40. In order to facilitate the understanding of the technology, Figure 3 The flat spiral element 40 is shown in a reverse state in the vertical direction. Figure 1The positional relationship between the upper surface 47 and the lower surface 48 shown in FIG. 4 is shown in FIG. 4. The planar spiral 40 has a substantially cylindrical shape in which the length in the direction along the central axis, i.e., the axial direction, is smaller than the length in the direction perpendicular to the axial direction. The planar spiral 40 is arranged in such a way that the rotation axis RX, which is the rotation center, is parallel to the Z direction.

[0045] A spiral groove 42 is formed on the surface of the planar spiral 40 that intersects with the rotation axis RX, that is, the lower surface 48. The connecting passage 22 of the material supply part 20 is connected to the groove 42 from the side of the planar spiral 40. In the present embodiment, the groove 42 is separated by the convex strips 43 to form three grooves. In addition, the number of grooves 42 is not limited to three, and can be one, or can be more than two. The groove 42 is not limited to a spiral shape, and can be a spiral or involute curve shape, or a shape extending in an arc shape from the central part to the periphery.

[0046] like Figure 1 As shown, the lower surface 48 of the planar screw 40 is opposite to the upper surface 52 of the barrel 50, and a space is formed between the groove 42 of the lower surface 48 of the planar screw 40 and the upper surface 52 of the barrel 50. Figure 3 The material inlet 44 shown supplies the raw material MR to the space between the planar screw 40 and the barrel 50 .

[0047] Figure 4 1 is a schematic top view showing the upper surface 52 side of the barrel 50. A connecting hole 56 is provided at the center of the barrel 50. A plurality of guide grooves 54 are formed on the upper surface 52 of the barrel 50. The plurality of guide grooves 54 are connected to the connecting hole 56 and extend from the connecting hole 56 to the outer periphery in a spiral shape. One end of the guide groove 54 may not be connected to the connecting hole 56. In addition, the guide groove 54 may be omitted. Figure 1 As shown, a cylinder heater 58 is buried in the cylinder 50 , and the cylinder heater 58 is used to plasticize the raw material MR supplied into the groove portion 42 of the rotating planar screw 40 to produce a molding material.

[0048] The raw material MR supplied to the groove 42 of the planar screw 40 is plasticized in the groove 42, and at the same time flows along the groove 42 due to the rotation of the planar screw 40, and is guided to the central portion 46 of the planar screw 40 as a molding material. The molding material in a fluid paste state that has flowed into the central portion 46 is supplied to the ejection portion 60 via the connecting hole 56 provided in the center of the barrel 50. In addition, in the molding material, all kinds of substances constituting the molding material do not need to be plasticized. The molding material only needs to be converted into a state having fluidity as a whole by plasticizing at least some kinds of substances constituting the molding material.

[0049] Figure 1The ejection section 60 includes: a nozzle 61 for ejecting the modeling material heated by plasticization; a flow path 65 for the modeling material, which is provided between the planar spiral 40 and the nozzle opening 62; and an ejection control section 77 for controlling the ejection of the modeling material.

[0050] The nozzle 61 is connected to the communication hole 56 of the barrel 50 via a flow path 65. The nozzle 61 ejects the molding material generated in the plasticizing section 30 toward the stage 210 from a nozzle opening 62 at the front end.

[0051] The discharge control unit 77 includes a discharge adjustment unit 70 for opening and closing the flow path 65 and a suction unit 75 for sucking the modeling material and temporarily storing it.

[0052] The ejection adjustment unit 70 is disposed in the flow path 65, and changes the opening of the flow path 65 by rotating in the flow path 65. In the present embodiment, the ejection adjustment unit 70 is composed of a butterfly valve. The ejection adjustment unit 70 is driven by the first drive unit 74 under the control of the control unit 300. The first drive unit 74 is composed of, for example, a stepping motor. The control unit 300 can adjust the flow rate of the molding material flowing from the plasticizing unit 30 to the nozzle 61, that is, the ejection amount of the molding material ejected from the nozzle 61, by controlling the rotation angle of the butterfly valve using the first drive unit 74. The ejection adjustment unit 70 can adjust the ejection amount of the molding material, and can control the on / off of the outflow of the molding material.

[0053] The suction unit 75 is connected between the ejection adjustment unit 70 and the nozzle opening 62 in the flow path 65. When the ejection of the molding material from the nozzle 61 stops, the suction unit 75 temporarily sucks the molding material in the flow path 65 to suppress the tailing phenomenon in which the molding material droops from the nozzle opening 62 in a wire-drawing manner. In the present embodiment, the suction unit 75 is composed of a plunger. The suction unit 75 is driven by the second driving unit 76 under the control of the control unit 300. The second driving unit 76 is composed of, for example, a stepping motor, a gear rack mechanism that converts the rotational force of the stepping motor into the translational motion of the plunger, and the like.

[0054] The stage 210 is arranged at a position opposite to the nozzle opening 62 of the nozzle 61. In the first embodiment, the modeling surface 211 of the stage 210 opposite to the nozzle opening 62 of the nozzle 61 is arranged parallel to the X and Y directions, that is, the horizontal direction. The stage 210 includes a stage heater 212 for suppressing rapid cooling of the modeling material ejected onto the stage 210. The stage heater 212 is controlled by the control unit 300.

[0055] The position changing unit 230 changes the relative position between the stage 210 and the nozzle 61 under the control of the control unit 300. In the present embodiment, the position of the nozzle 61 is fixed, and the position changing unit 230 moves the stage 210. The position changing unit 230 is composed of a three-axis positioner that uses the driving force of three motors to move the stage 210 in the three-axis directions of X, Y, and Z. In this specification, unless otherwise specified, the movement of the nozzle 61 refers to the relative movement of the nozzle 61 and the ejection unit 60 with respect to the stage 210.

[0056] In other embodiments, instead of the structure in which the stage 210 is moved by the position changing unit 230, a structure in which the position changing unit 230 moves the nozzle 61 relative to the stage 210 while the position of the stage 210 is fixed may be adopted. In addition, the following structure may be adopted: the stage 210 is moved in the Z direction by the position changing unit 230, and the nozzle 61 is moved in the X and Y directions; the stage 210 is moved in the X and Y directions by the position changing unit 230, and the nozzle 61 is moved in the Z direction. Even in these structures, the relative positional relationship between the nozzle 61 and the stage 210 can be changed.

[0057] The control unit 300 is a device for controlling the overall operation of the three-dimensional modeling device 100. The control unit 300 is composed of a computer, which includes one or more processors 310, a storage unit 320 composed of a main storage unit and an auxiliary storage unit, and an input / output interface for inputting and outputting signals to and from the outside. The processor 310 controls the modeling unit 110 and the position changing unit 230 according to the modeling data stored in the storage unit 320 by executing a computer program stored in the storage unit 320, and performs a modeling process for modeling a model on the stage 210. In addition, instead of being composed of a computer, the control unit 300 can also be realized by a structure of a combination circuit.

[0058] Figure 5 3 is an explanatory diagram of the modeling process executed in the control unit 300. In the three-dimensional modeling device 100, as described above, the solid raw material MR is plasticized to generate the modeling material MM. The control unit 300 changes the position of the nozzle 61 relative to the stage 210 in the direction along the modeling surface 211 of the stage 210 while maintaining the distance between the modeling surface 211 of the stage 210 and the nozzle 61, and ejects the modeling material MM from the nozzle 61. The modeling material MM ejected from the nozzle 61 is continuously accumulated in the moving direction of the nozzle 61.

[0059] The control unit 300 repeatedly moves the nozzle 61 to form the layer ML. After forming one layer ML, the control unit 300 moves the nozzle 61 relative to the stage 210 in the Z direction. Then, a further layer ML is stacked on the layer ML formed so far, thereby shaping the model.

[0060] For example, when the nozzle 61 moves in the Z direction when one layer ML is completed, or when there are multiple independent molding areas in each layer, the control unit 300 sometimes temporarily interrupts the ejection of the molding material from the nozzle 61. In this case, the ejection adjustment unit 70 closes the flow path 65 to stop the ejection of the molding material MM from the nozzle opening 62, and the suction unit 75 temporarily sucks the molding material in the nozzle 61. After changing the position of the nozzle 61, the control unit 300 opens the flow path 65 through the ejection adjustment unit 70 while discharging the molding material in the suction unit 75, thereby restarting the accumulation of the molding material MM from the changed position of the nozzle 61.

[0061] exist Figure 5 2 shows an example of molding one model on the molding surface 211. However, the control unit 300 can simultaneously mold a plurality of models on the molding surface 211 by stacking the layers ML at different positions on the molding surface 211.

[0062] Figure 6 4 is an explanatory diagram showing a schematic structure of an information processing device 400. The information processing device 400 is configured as a computer, and the CPU 410, the memory 420, the storage unit 430, the communication interface 440, and the input / output interface 450 are mutually connected via a bus 460. An input device 470 such as a keyboard, a mouse, and a touch panel, and a display unit 480 such as a liquid crystal display are connected to the input / output interface 450. The input device 470 and the display unit 480 may also be integrally provided in the information processing device 400. The information processing device 400 is implemented by, for example, a personal computer, a tablet terminal, a smart phone, and the like.

[0063] The information processing device 400 is connected to the control unit 300 of the three-dimensional modeling device 100 via the communication interface 440. Modeling data for modeling the model and attribute information of the model are sent from the information processing device 400 to the control unit 300. The modeling data includes path information indicating the moving path of the nozzle 61 and ejection amount information indicating the ejection amount of the modeling material in each moving path for each of the multiple layers into which the shape of the model is sliced. The modeling data is generated by the slicer software executed by the CPU 410.

[0064] Figure 72 is a diagram showing an example of attribute information of a model. In each model, as attribute information, a model ID, a user ID of a user who is to shape the model, a shaping position of the model on the shaping surface 211, a shaping difficulty of the model, and a concealment level indicating the concealment degree of the model are associated. The concealment level is set by the user for each model. The shaping difficulty is set by the CPU 410. The details of the shaping difficulty will be described later.

[0065] The image data of the model captured by the imaging unit 240 is transmitted from the control unit 300 of the three-dimensional modeling apparatus 100 to the information processing apparatus 400. Upon receiving the image data from the control unit 300, the CPU 410 of the information processing apparatus 400 displays the image represented by the image data on the display unit 480.

[0066] Figure 8 This is a flowchart of an imaging process for controlling the imaging unit 240 to image a model. Fig. 9 2 is an explanatory diagram of the imaging process. The imaging process is a process that the control unit 300 repeatedly executes during the operation of the three-dimensional modeling apparatus 100, such as during and after the execution of the above-mentioned modeling process.

[0067] exist Figure 8 In step S10, the control unit 300 receives an operation instruction of the shooting unit 240 from the information processing device 400. The operation instruction includes a user ID of the user who operates the information processing device 400 and shooting conditions. The shooting conditions include, for example, information indicating the shooting direction, zoom rate, field angle, etc. of the shooting unit 240. The user specifies the shooting direction, zoom rate, and field angle of the shooting unit 240 using the input device 470, thereby being able to specify an arbitrary shooting range in the internal space of the three-dimensional modeling device 100. The user ID is included in the operation instruction. Therefore, the user is specified by the user ID.

[0068] exist Fig. 9 The upper part of the figure shows the following situation: the user's own first model MD1 and the second model MD2 of other users are modeled on the modeling surface 211, and the first model MD1 is photographed by the photographing unit 240 and displayed on the display unit 480. The user specifies the shooting range, such as Fig. 9 As shown in the middle section, for example, the imaging unit 240 can be moved to capture images.

[0069] In step S20, the control unit 300 determines whether there is a model of another user within the shooting range specified by the user. The control unit 300 grasps the modeling position of each model of each user on the modeling surface 211 based on the attribute information received from the information processing device 400. Therefore, the control unit 300 can determine whether there is a model of another user within the shooting range based on the attribute information received from the information processing device 400 and the shooting range of the shooting unit 240.

[0070] In step S20, if it is determined that there is a model of another user within the shooting range, in step S30, the control unit 300 determines whether the shooting range can be limited. Limiting the shooting range means adjusting the field angle and zoom rate of the shooting unit 240 so that the shooting direction is not changed and the model of another user is not shot.

[0071] In step S30 , when it is determined that the imaging range can be limited, the control unit 300 limits the imaging range by adjusting the field angle and zoom rate of the imaging unit 240 so as not to capture the models of other users.

[0072] In step S20, when it is determined that there is no model of another user within the shooting range, or in step S40, when the shooting range is limited, the control unit 300 outputs the shot image in step S50. Specifically, the image data of the model shot by the shooting unit 240 is sent to the information processing device 400 and displayed on the display unit 480.

[0073] In step S30, if it is determined that the shooting range cannot be limited, that is, if the model of another user is captured even if the field angle and zoom ratio of the shooting unit 240 are adjusted, the control unit 300 skips the output of the captured image in step S50. As a result, the model of another user is not displayed on the display unit 480. In the case where the image data is not sent from the control unit 300, as shown in FIG. Fig. 9 As shown in the lower section of , the CPU 410 of the information processing device 400 may also display a predetermined mark indicating that the model cannot be displayed on the display unit 480. In addition, in step S30, when it is determined that the shooting range cannot be limited, the shooting operation based on the shooting unit 240 may be stopped without skipping the output of the shot image in step S50.

[0074] According to the three-dimensional modeling system 10 of the first embodiment described above, the imaging unit 240 is disposed between the inner wall 101 and the outer wall 102 of the housing 105, and images the model on the modeling surface 211 accommodated in the internal space via the first transparent member 103. Therefore, it is possible to suppress the imaging unit 240 from being affected by the heat in the internal space of the housing 105. As a result, the imaging unit 240 can stably image the model.

[0075] In this embodiment, at least a portion of the imaging unit 240 is disposed in a space at an upper corner between the first frame portion 161 and the second frame portion 162 of the door 160 provided in the housing 105. Therefore, the imaging unit 240 can be disposed in the housing 105 in an inconspicuous manner.

[0076] Furthermore, in this embodiment, a cover 108 covering at least a portion of the imaging unit 240 is provided between the imaging unit 240 and the second transparent member 104 inside the door 160. Therefore, it is possible to suppress the light incident from the second transparent member 104 from being reflected by the first transparent member 103 and reflected into the imaging unit 240. In addition, the cover 108 may be omitted.

[0077] Furthermore, in the present embodiment, the first end 164 of the door 160 has an opening and closing axis DX for opening and closing the door 160, and the distance from the imaging unit 240 to the first end 164 is shorter than the distance from the imaging unit 240 to the second end 165 on the opposite side of the first end 164. Therefore, it is possible to shorten the wiring from the imaging unit 240 to the control unit 300. Furthermore, the imaging unit 240 and the second end 165 can be separated from each other, so that the impact received by the second end 165 due to the opening and closing of the door 160 can be suppressed from being transmitted to the imaging unit 240.

[0078] In addition, in this embodiment, by executing the above-mentioned photographing process, the control unit 300 photographs the object corresponding to the designated user and does not photograph the object corresponding to the undesignated user, among the first three-dimensional object corresponding to the first user and the second three-dimensional object corresponding to the second user, which are formed at different positions on the forming surface 211, by adjusting the photographing range of the photographing unit 240. Therefore, it is possible to suppress photographing the models of other users and displaying them on the display unit 480.

[0079] Fig.10 FIG. 1 is a diagram showing another example of the photographing process in the first embodiment. Figure 8 In the shooting process shown in FIG. 1 , if there is a model of another user within the shooting range, the control unit 300 limits the shooting range or stops outputting the shot image. Fig.10 As shown, when a model of another user is captured within the capturing range, the control unit 300 may perform image processing on the region where the model of the other user is captured in real time.

[0080] As such image processing, mosaic processing may be performed on the area where the model of another user is photographed, or processing may be performed to overlap a specified mark. Such processing is called blurring processing. That is, the control unit 300 may also model the first three-dimensional modeling object corresponding to the first user and the second three-dimensional modeling object corresponding to the second user at different positions on the modeling surface 211, and blur the shooting range of the modeling object corresponding to the unspecified user, and do not blur the shooting range of the modeling object corresponding to the specified user. Thus, even if the model of another user is displayed on the display unit 480, it is difficult to visually recognize the model.

[0081] In the first embodiment described above, the imaging unit 240 is disposed between the inner wall 101 and the outer wall 102 constituting the door 160. In contrast, the imaging unit 240 may be disposed at a portion of the housing 105 where the door 160 is not present. In this case, the portion of the inner wall 101 corresponding to the imaging direction of the imaging unit 240 is formed by the first transparent member 103.

[0082] In the first embodiment described above, the three-dimensional modeling apparatus 100 is provided with one imaging unit 240, and the designated model is imaged by changing the imaging direction of the imaging unit 240. In contrast, the three-dimensional modeling apparatus 100 may include a plurality of imaging units 240. In this case, the imaging direction of the imaging unit 240 may not be changed, and the control unit 300 may select the imaging unit 240 closest to the designated model, and the designated model may be imaged by the selected imaging unit 240.

[0083] B. Second Implementation Method:

[0084] Fig.11 This is a flowchart of the imaging process in the second embodiment. Fig.12 1 is an explanatory diagram of the imaging process in the second embodiment. In the second embodiment, the content of the imaging process is different from that in the first embodiment. The configuration of the three-dimensional modeling system 10 in the second embodiment is the same as that in the first embodiment.

[0085] exist Fig.11 In step S100, the control unit 300 receives an operation instruction of the imaging unit 240 from the information processing device 400. As in the first embodiment, the operation instruction includes the user ID of the user who operates the information processing device 400 and the imaging condition.

[0086] In step S110, the control unit 300 makes the illumination of the models of other users relatively darker. Specifically, the control unit 300 controls the illumination direction of the illumination 250 to illuminate the model of the user who has given the operation instruction to the imaging unit 240, and does not illuminate the models of other users. Fig.12 , a case is shown in which the model MD2 of another user is not illuminated from the lighting 250 , and thus the model MD2 is displayed very darkly on the display unit 480 .

[0087] In step S120 , the control unit 300 outputs the captured image. Specifically, the image data of the model captured by the imaging unit 240 is transmitted to the information processing device 400 and displayed on the display unit 480 .

[0088] According to the second embodiment described above, in the first model MD1 and the second model MD2 formed at different positions of the forming surface 211, the control unit 300 can make the brightness of the unspecified formed object relatively darker than the brightness of the specified formed object by controlling the lighting 250. Therefore, it is possible to suppress the unspecified model from being clearly photographed and displayed on the display unit 480.

[0089] In the second embodiment, the illumination 250 may be attached to the imaging unit 240. Thus, the actuator for changing the imaging direction of the imaging unit 240 and the actuator for changing the illumination direction of the illumination 250 can be used in common.

[0090] In the second embodiment, the model of the user who has given an operation instruction to the imaging unit 240 is illuminated, and the models of other users are not illuminated. In contrast, the control unit 300 may receive designation of the model of the illumination target regardless of the user who has given an operation instruction to the imaging unit 240, illuminate the designated model, and not illuminate the undesignated model.

[0091] In the second embodiment, the three-dimensional modeling apparatus 100 may also include a plurality of lightings 250 with different lighting directions. In this case, in the above step S110, the control unit 300 turns on the lighting 250 whose model enters the lighting range of the user who has given the operating instruction to the imaging unit 240, and turns off the lighting 250 whose models of other users enter the lighting range. In this way, the display unit 480 can also clearly display the designated model.

[0092] In the second embodiment, the three-dimensional modeling system 10 may be provided with wide-area lighting that illuminates the entire interior space in addition to the lighting 250 that can adjust the lighting direction. In this case, when there is a model of another user on the modeling surface 211, the control unit 300 may also turn off the wide-area lighting in the above-mentioned step S110. Thus, when there is a model of another user on the modeling surface 211, the model of the other user can be dimmed, and when there is no model of another user on the modeling surface 211, the entire interior space can be illuminated, so that the user's model can be clearly photographed.

[0093] C. Third Implementation Method:

[0094] Fig.13 2 is a flowchart of the shaping data correction process in the third embodiment. In the third embodiment, before shaping the model on the stage 210, the control unit 300 executes Fig.13 The configuration of the three-dimensional modeling system 10 in the third embodiment is the same as that in the first embodiment. In the third embodiment, the imaging process in the first and second embodiments may or may not be executed.

[0095] like Fig.13 As shown, in the formation data correction process, in step S200 , the control unit 300 acquires attribute information of each model included in the formation data from the information processing device 400 .

[0096] In step S210 , the control unit 300 changes the shaping position or orientation of each model included in the shaping data with respect to the imaging unit 240 based on the attribute information acquired in step S200 .

[0097] Fig.14 1 is an explanatory diagram showing a first example of the shaping data correction process. Fig.14 In the above step S210, the control unit 300 changes the modeling position of each model according to the modeling difficulty of each model. Fig.14 The upper part of the figure shows the modeling position before the change, and the lower part shows the modeling position after the change. Fig.14 In the example shown, the third model MD3 has the highest modeling difficulty, followed by the fifth model MD5, which has a high modeling difficulty, and the fourth model MD4, which has the lowest modeling difficulty. Fig.14 As shown in the lower section of , the control unit 300 sets the modeling position of the model with the highest modeling difficulty to the position closest to the imaging unit 240, and sets the modeling position of the model with the lowest modeling difficulty to the position farthest from the imaging unit 240. That is, the control unit 300 arranges the model with the higher modeling difficulty closer to the imaging unit 240. Thus, the imaging unit 240 can finely capture the model with the high modeling difficulty and display it on the display unit 480.

[0098] The CPU 410 of the information processing device 400 sets the modeling difficulty according to the number of facets. The number of facets refers to the number of meshes when the surface of the model is divided into triangular or quadrilateral meshes. The more facets a model has, the more complex it is and the higher the modeling difficulty. The number of facets includes the number of model facets and the number of supporting facets. The number of model facets is the number of facets of the solid part of the model, and the number of supporting facets is the number of facets of the supporting part that supports the suspended part of the model when the model is modeled. The CPU 410 grades the modeling difficulty into high, medium, and low levels according to the number of model facets. For models with the same number of model facets, the modeling difficulty of the model with a large number of supporting facets is set to a modeling difficulty that is higher than the modeling difficulty of the model with a small number of supporting facets.

[0099] Fig.15 2 is an explanatory diagram showing a second example of the shaping data correction process. The control unit 300 may also change the orientation of each model so that the side surface of each model with a high shaping difficulty faces the imaging unit 240 side. Fig.15The upper part of the diagram shows the orientation of each model before the change, and the lower part shows the orientation after the change. Fig.15 , the orientations of the third model MD3 and the fifth model MD5 are changed. The control unit 300 analyzes the modeling data and determines the surface with a high distribution rate of support and the surface with a large shape change of the support as a surface with a high modeling difficulty. In addition, the CPU 410 of the information processing device 400 may also record information for identifying a surface with a high modeling difficulty in the attribute information in advance.

[0100] Fig.16 2 is an explanatory diagram showing a third example of the shaping data correction process. Fig.16 In the above step S210, the control unit 300 changes the modeling position of each model according to the concealment level of each model. Fig.16 The upper part of the figure shows the modeling position before the change, and the lower part shows the modeling position after the change. Fig.16 In the example shown, the third model MD3 has the highest level of anonymity, followed by the fifth model MD5 with a high level of anonymity, and the fourth model MD4 with the lowest level of anonymity. Fig.16 As shown in the lower section of , the control unit 300 arranges the models so as to be arranged along the shooting direction of the shooting unit 240, and sets the modeling position of the model with the highest concealment level to the position farthest from the shooting unit 240, and sets the modeling position of the model with the lowest concealment level to the position closest to the shooting unit 240. That is, the control unit 300 shapes the model with the low concealment level between the model with the high concealment level and the shooting unit 240. Thus, the model with the high concealment level is arranged behind the model with the low concealment level, so that it is possible to suppress the shooting unit 240 from shooting the model with the high concealment level in detail and displaying it on the display unit 480.

[0101] In a third embodiment, if Figure 14 to Figure 16 , an example is shown in which the control unit 300 changes the modeling position or orientation of each model included in the modeling data according to the modeling difficulty and the anonymity level. In contrast, the control unit 300 may not change the generated modeling data, but may determine the modeling position and orientation of each model from the beginning based on the modeling difficulty and the anonymity level when generating the modeling data.

[0102] D. Fourth Implementation Method:

[0103] Fig.17 1 is a flowchart of a stereoscopic image generation process in the fourth embodiment. The stereoscopic image generation process is a process executed by the control unit 300 during or after the execution of the above-mentioned modeling process when there is a prescribed instruction from the user. In the fourth embodiment, the shooting process in the first and second embodiments and the modeling data correction process in the third embodiment may or may not be executed.

[0104] In the three-dimensional image generation process, in step S300 , the control unit 300 uses the imaging unit 240 to image the model on the modeling surface 211 from a plurality of positions.

[0105] Fig.18 3D modeling apparatus 100 is provided with a plurality of imaging units 240 installed at different positions. In step S310, control unit 300 controls each imaging unit 240 to capture images of the model from a plurality of positions.

[0106] In step S310, the control unit 300 generates a stereoscopic image based on the results of photographing the model from a plurality of positions. As an algorithm for generating a stereoscopic image, a well-known algorithm can be used, for example, a visual volume intersection method can be used.

[0107] exist Fig.17 In step S320, the control unit 300 outputs the stereoscopic image data representing the generated stereoscopic image to the information processing device 400. The information processing device 400 displays the stereoscopic image of the model on the display unit 480 using the received stereoscopic image data. Fig.18 4 shows an example in which a stereoscopic image generated by the control unit 300 is displayed on the display unit 480. The user can observe the shape and configuration of the model from any viewpoint by operating the input device 470 of the information processing device 400. The stereoscopic image displayed on the display unit 480 can also be called a digital twin image.

[0108] According to the fourth embodiment described above, by photographing the model after or during modeling from a plurality of positions by the photographing unit 240, a three-dimensional image can be displayed on the display unit 480. Therefore, even when the internal space of the three-dimensional modeling apparatus 100 cannot be directly visually recognized, the arrangement and shape of the model can be confirmed from any viewpoint.

[0109] Fig.19 2 is a diagram showing a first variation of the fourth embodiment. In the fourth embodiment described above, the three-dimensional modeling device 100 includes a plurality of imaging units 240. In contrast, the imaging unit 240 may be configured to be movable around the modeling surface 211 between the inner wall 101 and the outer wall 102 of the housing 105 constituting the three-dimensional modeling device 100. Specifically, Fig.19As shown, a track 241 is arranged between the inner wall 101 and the outer wall 102 (not shown), and the photographing unit 240 is suspended on the track 241 through the support part 242. Then, the control unit 300 drives the motor provided in the support part 242 according to the designated photographing position, so that the rotating body in contact with the track 241 rotates and the photographing unit 240 moves. In order to be able to photograph the internal area by the photographing unit 240, the first transparent member 103 is arranged at a portion of the inner wall 101 of the housing 105 corresponding to the moving range of the photographing unit 240. According to such a structure, the control unit 300 can photograph the model from any position, so that a three-dimensional image can be generated with high precision.

[0110] Fig. 20 FIG. 2 is a diagram showing a second modification of the fourth embodiment. In the first modification described above, the imaging unit 240 moves around the shaping surface 211. In contrast, in Fig. 20 In the second modification shown, the position of the photographing unit 240 is fixed, and the modeling surface 211 rotates. In this case, the position changing unit 230 has a motor that rotates the modeling surface 211. Even with such a structure, as in the first modification, the control unit 300 can photograph the model from any position, so that a three-dimensional image can be generated with high precision. In addition, the structures of the first modification and the second modification are not limited to the fourth embodiment, and can also be applied to the first to third embodiments.

[0111] E. Other implementation methods:

[0112] (E1) In the above embodiment, the shaping unit 110 plasticizes the material by the planar screw 40. On the other hand, the shaping unit 110 may plasticize the material by rotating a coaxial screw, for example. Furthermore, the shaping unit 110 may plasticize the filamentary material by a heater.

[0113] (E2) In each of the above-mentioned embodiments, the processing executed by the control unit 300 of the three-dimensional modeling device 100 may also be executed by the CPU 410 of the information processing device 400. In addition, the processing executed by the CPU 410 of the information processing device 400 may also be executed by the control unit 300 of the three-dimensional modeling device 100. The control unit 300 of the three-dimensional modeling device 100 and the CPU 410 of the information processing device 400 both correspond to the control unit in the present application.

[0114] (E3) In the above embodiment, the door 160 is a door that opens and closes around the opening and closing axis DX. On the other hand, the door 160 may be a sliding door that slides along a track.

[0115] F. Other methods:

[0116] The present disclosure is not limited to the above-mentioned embodiments, and can be implemented in various structures within the scope of its main purpose. For example, in order to solve part or all of the above-mentioned problems, or to achieve part or all of the above-mentioned effects, the technical features of the embodiments corresponding to the technical features in each of the following modes can be appropriately replaced or combined. In addition, if the technical features are not described as necessary technical features in this specification, they can be appropriately deleted.

[0117] (1) According to a first aspect of the present disclosure, a three-dimensional modeling system is provided. The three-dimensional modeling system comprises: a modeling unit having a heater for plasticizing a material to generate a modeling material and a nozzle for ejecting the modeling material; a stage having a modeling surface on which the modeling material is stacked; a position changing unit for changing the relative position of the stage and the nozzle; a photographing unit arranged at a position further outward than the outer edge of the modeling surface when viewed from a direction perpendicular to the modeling surface; a shell having an inner wall for dividing an internal space and an outer wall in contact with external air, and accommodating the modeling surface in the internal space; and a control unit for controlling the modeling unit and the position changing unit based on modeling data to model a three-dimensional modeling object on the modeling surface in the shell, wherein at least a portion of the inner wall is formed by a first transparent component, and the photographing unit is arranged between the inner wall and the outer wall, and is configured to photograph the three-dimensional modeling object on the modeling surface accommodated in the internal space via the first transparent component.

[0118] According to this method, the camera unit is arranged between the inner wall and the outer wall of the housing, and the three-dimensional modeling object on the modeling surface accommodated in the internal space is photographed via the first transparent component. Therefore, it is possible to suppress the camera unit from being affected by the heat in the internal space of the housing. As a result, the camera unit can stably photograph the three-dimensional modeling object.

[0119] (2) In the above aspect, the housing may include a door, the door includes a portion of the inner wall and a portion of the outer wall, the portion of the inner wall constituting the door is formed by the first transparent member, the portion of the outer wall constituting the door is formed by a second transparent member that is opposed to the first transparent member, the door includes a first frame portion surrounding the first transparent member and a second frame portion surrounding the second transparent member, and at least a portion of the imaging unit is disposed in a space at an upper corner of a space between the first frame portion and the second frame portion. According to such an aspect, the imaging unit can be disposed in the housing in an inconspicuous manner.

[0120] (3) In the above aspect, a cover may be provided between at least a portion of the imaging unit and the second transparent member, the cover at least a portion of which is opposed to the second transparent member and covers at least a portion of the imaging unit. According to such an aspect, it is possible to prevent light incident from the second transparent member from being reflected by the first transparent member and being reflected into the imaging unit.

[0121] (4) In the above aspect, the door may have a first end and a second end opposite to the first end, the first end having an opening and closing axis for opening and closing the door, and the distance from the imaging unit to the first end is shorter than the distance from the imaging unit to the second end. According to such an aspect, the wiring from the imaging unit to the control unit can be shortened. In addition, the imaging unit and the second end can be separated, so that the impact received by the second end due to the opening and closing of the door can be prevented from being transmitted to the imaging unit.

[0122] (5) In the above-mentioned method, the photographing unit may be configured to be able to adjust the photographing range, the control unit may model a first three-dimensional model corresponding to a first user and a second three-dimensional model corresponding to a second user at different positions on the modeling surface, and the control unit may adjust the photographing range to photograph the model corresponding to the designated user among the first three-dimensional model and the second three-dimensional model, and not photograph the model corresponding to an undesignated user. According to such a method, it is possible to suppress photographing the models of other undesignated users.

[0123] (6) In the above-mentioned method, the control unit may shape a first three-dimensional object corresponding to a first user and a second three-dimensional object corresponding to a second user at different positions on the shaping surface, and the control unit may blur the shooting range of the object corresponding to an unspecified user and may not blur the shooting range of the object corresponding to a specified user. According to such a method, it is possible to make it difficult to visually recognize the models of other unspecified users.

[0124] (7) In the above-mentioned embodiment, there may be lighting for illuminating the inner space, the lighting being configured to be able to adjust the lighting range, the control unit shaping the first three-dimensional modeling object and the second three-dimensional modeling object at different positions on the shaping surface, and the control unit controlling the lighting so that the brightness of the unspecified modeling object among the first three-dimensional modeling object and the second three-dimensional modeling object is relatively darker than the brightness of the specified modeling object. According to such an embodiment, it is possible to suppress the unspecified model from being clearly photographed.

[0125] (8) In the above aspect, the control unit may shape the first three-dimensional object and the second three-dimensional object having different shapes in at least one of a degree of difficulty in shaping and a degree of concealment at different positions on the shaping surface.

[0126] (9) In the above aspect, the control unit may determine at least one of the position and orientation of the first three-dimensional object and the second three-dimensional object relative to the imaging unit based on at least one of the modeling difficulty and the degree of concealment.

[0127] (10) In the above-mentioned embodiment, the control unit may determine the positions of the first three-dimensional object and the second three-dimensional object relative to the imaging unit so that the object with a higher modeling difficulty among the first three-dimensional object and the second three-dimensional object is located closer to the imaging unit than the object with a lower modeling difficulty. According to such an embodiment, the object with a higher modeling difficulty can be accurately imaged.

[0128] (11) In the above-mentioned method, the control unit may determine the positions of the first three-dimensional object and the second three-dimensional object relative to the imaging unit so that the object with low concealment of the first three-dimensional object and the second three-dimensional object is located between the object with high concealment and the imaging unit. According to such a method, it is possible to prevent the imaging unit from capturing the three-dimensional object with high concealment in detail.

[0129] (12) In the above-mentioned aspect, the photographing unit may be configured to photograph the three-dimensional object from a plurality of different positions, and the control unit may generate a stereoscopic image of the three-dimensional object based on the photographing result of the photographing unit. According to such an aspect, even when the internal space of the three-dimensional modeling device cannot be directly visually recognized by displaying a stereoscopic image, the configuration and shape of the three-dimensional object can be confirmed from any viewpoint.

[0130] (13) In the above aspect, the imaging unit may be configured to be movable around the molding surface between the inner wall and the outer wall, and a portion of the inner wall corresponding to the movable range of the imaging unit may be formed by the first transparent member. According to such an aspect, the three-dimensional molding can be photographed from any direction.

[0131] The present disclosure is not limited to the above-mentioned three-dimensional modeling system, and can be implemented in various forms such as a three-dimensional modeling device, an information processing device, a computer program, and a non-transitory tangible recording medium that records the computer program in a computer-readable manner.

Claims

1. A three-dimensional modeling system, characterized in that: The three-dimensional modeling system comprises: A molding part having a heater for plasticizing a material to generate a molding material and a nozzle for ejecting the molding material; A stage having a modeling surface on which the modeling material is stacked; A position changing unit, which changes the relative position between the stage and the nozzle; A camera unit, when viewed from a direction perpendicular to the molding surface, is arranged at a position further outward than an outer edge of the molding surface; A shell having an inner wall for dividing an inner space and an outer wall in contact with external air, and accommodating the molding surface in the inner space; and The control unit controls the shaping unit and the position changing unit based on the shaping data to shape the three-dimensional shaping object on the shaping surface in the housing. At least a portion of the inner wall is formed by a first transparent component, The imaging unit is disposed between the inner wall and the outer wall, and is configured to image the three-dimensional object on the molding surface accommodated in the internal space through the first transparent member.

2. The three-dimensional modeling system according to claim 1, wherein: The housing has a door, the door having a portion of the inner wall and a portion of the outer wall, A portion of the inner wall constituting the door is constituted by the first transparent member, A portion of the outer wall constituting the door is constituted by a second transparent member opposed to the first transparent member, The door includes a first frame portion surrounding the first transparent member and a second frame portion surrounding the second transparent member. At least a part of the imaging unit is disposed in a space at an upper corner of a space between the first frame portion and the second frame portion.

3. The three-dimensional modeling system according to claim 2, wherein: A cover is provided between at least a portion of the imaging unit and the second transparent member, the cover at least a portion of which faces the second transparent member and covers at least a portion of the imaging unit.

4. The three-dimensional modeling system according to claim 2, wherein: The door has a first end and a second end opposite to the first end. The first end portion has an opening and closing axis for opening and closing the door. A distance from the imaging unit to the first end is shorter than a distance from the imaging unit to the second end.

5. The three-dimensional modeling system according to claim 1, wherein: The imaging unit is configured to be able to adjust the imaging range. The control unit shapes a first three-dimensional object corresponding to the first user and a second three-dimensional object corresponding to the second user at different positions on the shape surface, The control unit adjusts the imaging range to image the object corresponding to the designated user among the first three-dimensional object and the second three-dimensional object, and not to image the object corresponding to the undesignated user.

6. The three-dimensional modeling system according to claim 1, wherein: The control unit shapes a first three-dimensional object corresponding to the first user and a second three-dimensional object corresponding to the second user at different positions on the shape surface, The control unit blurs the imaging range of the shaped object corresponding to the undesignated user, and does not blur the imaging range of the shaped object corresponding to the designated user.

7. The three-dimensional modeling system according to claim 1, wherein: The three-dimensional modeling system has lighting for illuminating the interior space, The lighting structure is capable of adjusting the lighting range. The control unit shapes the first three-dimensional object and the second three-dimensional object at different positions on the shaping surface, The control unit controls the illumination so that the brightness of an unspecified object among the first three-dimensional object and the second three-dimensional object is relatively darker than the brightness of a specified object.

8. The three-dimensional modeling system according to claim 1, wherein: The control unit shapes the first three-dimensional object and the second three-dimensional object having different shapes in at least one of the degree of shaping difficulty and the degree of concealment at different positions on the shaping surface.

9. The three-dimensional modeling system according to claim 8, wherein: The control unit determines at least one of the positions and orientations of the first three-dimensional object and the second three-dimensional object relative to the imaging unit based on at least one of the modeling difficulty and the degree of concealment.

10. The three-dimensional modeling system according to claim 9, wherein: The control unit determines the positions of the first three-dimensional object and the second three-dimensional object relative to the imaging unit so that the object with higher molding difficulty among the first three-dimensional object and the second three-dimensional object is located closer to the imaging unit than the object with lower molding difficulty.

11. The three-dimensional modeling system according to claim 9, wherein: The control unit determines the positions of the first three-dimensional object and the second three-dimensional object relative to the imaging unit so that the object with low concealment of the first three-dimensional object and the second three-dimensional object is located between the object with high concealment and the imaging unit.

12. The three-dimensional modeling system according to claim 1, wherein: The imaging unit is configured to be able to image the three-dimensional object from a plurality of different positions. The control unit generates a stereoscopic image of the three-dimensional object based on the imaging result of the imaging unit.

13. The three-dimensional modeling system according to claim 1, wherein: The imaging unit is configured to be movable around the shaping surface between the inner wall and the outer wall. A portion of the inner wall corresponding to the moving range of the imaging unit is formed by the first transparent member.

Images