Light shaping device and light shaping method

Abstract

The first pre-exposed material layer is formed by extending a first material, the first post-exposed material layer including one or more first exposed portions is formed by exposing the first pre-exposed material layer, and the one or more first solidified portions are left remaining by removing one or more first unexposed portions from the first post-exposed material layer. Subsequently, the second pre-exposed material layer in contact with the one or more first solidified portions is formed by extending a second material, the second post-exposed material layer including one or more exposed portions is formed by exposing the second pre-exposed material layer, and the one or more second solidified portions are left remaining by removing one or more second unexposed portions from the second post-exposed material layer.

Description

Technical Field

[0001] This invention relates to a light modeling apparatus and a light modeling method. Background Technology

[0002] Patent Document 1 discloses a method and apparatus for manufacturing a three-dimensional object composed of a plurality of materials. In the method and apparatus of Patent Document 1, a layer of ceramic slurry is deposited on a work tray. The deposited layer is polymerized by being irradiated with a laser beam. Next, a plurality of recesses are formed in the cured layer by laser processing. Then, a photocurable composition is deposited into the plurality of recesses using a nozzle. The deposited layer is polymerized by being irradiated with a laser beam. Thus, a layer composed of a plurality of materials is formed.

[0003] On the other hand, Patent Document 2 describes a molding apparatus for shaping three-dimensional objects using fused deposition modeling (FDM). In fused deposition modeling, after a molding material containing thermoplastic resin is melted into a semi-liquid state using heat, the molding material is sprayed onto a predetermined location based on the 3D data of the desired three-dimensional object, thereby forming a molding layer. By repeatedly stacking these molding layers, a three-dimensional object can be shaped. In the molding apparatus of Patent Document 2, a first ejection nozzle and a second ejection nozzle are provided for melting and ejecting solid material.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2019-34552

[0005] Patent Document 2: Japanese Patent Application Publication No. 2020-146927 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] However, in the method and apparatus of Patent Document 1, the position of the nozzle needs to be precisely controlled in order to deposit the photocurable composition in a plurality of recesses respectively. Therefore, complex control of the nozzle is required.

[0008] On the other hand, in the fused deposition modeling method described in Patent Document 2, the molding layer is formed into a predetermined shape by ejecting molten molding material from a nozzle to a designated location. Since the molten material ejected from the nozzle is a viscous liquid, it is difficult to perform fine and high-precision control. Therefore, it is difficult to form the molding layer into a fine shape.

[0009] The purpose of this invention is to provide a light modeling device that can produce three-dimensional objects made of multiple materials with high precision without complicating the control process.

[0010] Technical solutions to the problem

[0011] (1) A photoforming apparatus according to one aspect of the present invention includes: a modeling table having a modeling surface; a supply unit selectively supplying a first material as a photocurable material or a second material different from the first material as a photocurable material; an extension member forming a first pre-exposure material layer by extending the first material supplied by the supply unit, and forming a second pre-exposure material layer by extending the second material supplied by the supply unit; and an exposure unit forming a first pre-exposure material layer including one or more first exposed portions and one or more first unexposed portions by exposing the first pre-exposure material layer extended by the extension member. The system comprises: a first post-exposure material layer, which forms a second post-exposure material layer including one or more second exposed portions and one or more second unexposed portions by exposing a second pre-exposure material layer extended by the extended member; a removal section, which removes one or more first unexposed portions and one or more second unexposed portions from the first post-exposure material layer and the second post-exposure material layer; and a control section, which controls the supply section to supply first material and controls the extended member to form the first pre-exposure material layer on or on the shaping surface by extending the first material. On the formed cured composition layer, the control unit controls the exposure unit to form a first post-exposure material layer including one or more exposed portions by exposing the first pre-exposure material layer; the control unit controls the removal unit to leave one or more first exposed portions as one or more first cured portions by removing one or more first unexposed portions from the first post-exposure material layer; the control unit controls the supply unit to supply second material; and the control unit controls the stretching member to stretch the second material after removing one or more first unexposed portions. The control unit controls the exposure unit to form a second pre-exposure material layer that contacts one or more first cured portions. The control unit controls the removal unit to remove one or more second unexposed portions from the second cured material layer, leaving one or more second exposed portions as one or more second cured portions. Thus, the photoforming apparatus manufactures a model comprising one or more first cured portions and one or more second cured portions.

[0012] In this light-forming apparatus, a first pre-exposure material layer is formed on a shaping surface or a cured composition layer by an extending member. Then, a first post-exposure material layer, comprising one or more first exposed portions and one or more first unexposed portions, is formed by an exposure section. Next, one or more first unexposed portions of the first post-exposure material layer are removed by a removal section. Thus, one or more first exposed portions remain as one or more first cured portions. In this state, a second pre-exposure material layer is formed in contact with one or more first cured portions by an extending member. Then, a second post-exposure material layer, comprising one or more second exposed portions and one or more second unexposed portions, is formed by an exposure section. Then, one or more second unexposed portions of the second post-exposure material layer are removed by a removal section. Thus, one or more second exposed portions remain as one or more second cured portions. In this way, a shaped object comprising one or more first cured portions and one or more second cured portions is formed.

[0013] According to this configuration, after forming a first pre-exposure material layer by stretching a first material, one or more first cured portions are formed by exposure and removal. In this case, the first pre-exposure material layer can be formed with simple control of the stretching member, and one or more first cured portions can be accurately formed in a predetermined shape by controlling the light. Furthermore, after forming a second pre-exposure material layer by stretching a second material, one or more second cured portions are formed by exposure and removal. In this case, the second pre-exposure material layer can be formed with simple control of the stretching member, and one or more second cured portions can be correctly formed in a predetermined shape by controlling the light. As a result, three-dimensional objects formed from multiple materials can be manufactured with high precision without complicating the control process.

[0014] (2) The light modeling device may further include: an auxiliary platform, configured to be adjacent to the modeling platform; and a purification unit, which purifies the upper surface of the auxiliary platform. The control unit can control the supply unit to supply a first material to the upper surface of the auxiliary platform. The control unit can control the extension member to continuously extend the first material on the auxiliary platform from the upper surface of the auxiliary platform to the modeling surface or the cured composition layer after the first material is supplied. The control unit can control the supply unit to supply a second material to the upper surface of the auxiliary platform after the extension of the first material. The control unit can control the extension member to continuously extend the second material on the auxiliary platform from the upper surface of the auxiliary platform to the modeling surface or the cured composition layer after the second material is supplied. The control unit can control the purification unit to purify the upper surface of the auxiliary platform after the extension of the first material and before the supply of the second material.

[0015] In this case, a common auxiliary stage can be used for supplying the first material, extending the first material, supplying the second material, and extending the second material. Therefore, it is possible to suppress the complexity of the structure of the light-forming device and simplify the control of the extending member. In addition, since the upper surface of the auxiliary stage is cleaned by the cleaning unit after the extension of the first material and before the supply of the second material, it is possible to prevent the first material and the second material from mixing on the auxiliary stage.

[0016] (3) The light modeling device may also include an auxiliary platform, which is configured to be adjacent to the modeling platform. The control unit can control the supply unit to supply a first material to the upper surface of the auxiliary platform. The control unit can control the extension member to extend the first material on the auxiliary platform continuously from the upper surface of the auxiliary platform to the modeling surface or the cured composition layer after the first material is supplied. The control unit can control the removal unit to clean the upper surface of the auxiliary platform after the extension of the first material and before the supply of the second material.

[0017] In this configuration, a common auxiliary stage can be used for supplying the first material, extending the first material, supplying the second material, and extending the second material. Therefore, the complexity of the light-forming apparatus's structure can be reduced, and the control of the extending member can be simplified. Furthermore, since the upper surface of the auxiliary stage is cleaned by the removal section after the extension of the first material and before the supply of the second material, mixing of the first and second materials on the auxiliary stage can be prevented. Moreover, since the upper surface of the auxiliary stage is cleaned by the removal section, there is no need to provide a separate structure for cleaning the upper surface of the auxiliary stage. Thus, the manufacturing cost of the light-forming apparatus can be reduced.

[0018] (4) The control unit can control the stretching member so that the first pre-exposure material layer has a first thickness, and the control unit can control the stretching member so that the second pre-exposure material layer has a second thickness greater than the first thickness.

[0019] In this case, when forming the second pre-exposure material layer by stretching the second material, interference between the stretching member and the upper surface of the first post-exposure material layer can be prevented. This widens the allowable range of movement accuracy for the stretching member. As a result, the cost of the photoforming apparatus can be reduced. Furthermore, a cured composition layer comprising a first cured portion and a second cured portion with different thicknesses can be easily formed.

[0020] (5) The extension member may have a lower end that extends parallel to the molding surface. The control unit may control the extension member so that when the first material is extended, the extension member moves in a state where the lower end of the extension member is spaced from the molding surface or the upper surface of the cured composition layer at a distance equivalent to a first thickness. The control unit may also control the extension member so that when the second material is extended, the extension member moves in a state where the lower end of the extension member is spaced from the molding surface or the upper surface of the cured composition layer at a distance equivalent to a second thickness.

[0021] In this case, by adjusting the spacing between the upper surface of the molding surface or the cured composition layer and the lower end of the extension member, and by moving the extension member parallel to the molding surface, it is possible to easily and accurately form a pre-exposure material layer with a first thickness and a pre-exposure material layer with a second thickness.

[0022] (6) The light modeling device may also include a shielding member that shields the exposure portion, and the control unit may also control the shielding member to shield the exposure portion when removing one or more first unexposed portions and when removing one or more second unexposed portions.

[0023] In this case, even if one or more of the first and second unexposed portions are removed and dispersed as dust, dust adhesion to the exposure section can be prevented. This reduces the frequency of maintenance and cleaning of the exposure section.

[0024] (7) One of the first material and the second material may contain an insulating material, and the other of the first material and the second material may contain a conductive material.

[0025] In this case, it is possible to manufacture three-dimensional shapes made of insulating and conductive materials with high precision using simple controls.

[0026] (8) Another aspect of the photoforming method of the present invention includes: a step of supplying a first material as a photocurable material; a step of forming a first pre-exposure material layer on a modeling surface or on a cured composition layer formed on the modeling surface by stretching the first material; a step of forming a first post-exposure material layer comprising one or more exposed portions by exposing the first pre-exposure material layer; a step of leaving one or more first exposed portions as one or more first cured portions by removing one or more first unexposed portions from the first post-exposure material layer; and a step of supplying a second material as a photocurable material different from the first material. The process involves the following steps: after removing one or more first unexposed portions, forming a second pre-exposure material layer in contact with one or more first cured portions by stretching a second material; forming a second post-exposure material layer including one or more second exposed portions by exposing the second pre-exposure material layer; and removing one or more second unexposed portions from the second post-exposure material layer, leaving one or more second exposed portions as one or more second cured portions. Thus, a model comprising one or more first cured portions and one or more second cured portions is manufactured by the photoforming method.

[0027] According to this light modeling method, after forming a first pre-exposure material layer by stretching a first material, one or more first cured portions are formed by exposure and removal. In this case, the first pre-exposure material layer can be formed by simple control based on stretching, and one or more first cured portions can be accurately formed in a predetermined shape by controlling the light. Furthermore, after forming a second pre-exposure material layer by stretching a second material, one or more second cured portions are formed by exposure and removal. In this case, the second pre-exposure material layer can be formed by simple control based on stretching, and one or more second cured portions can be accurately formed in a predetermined shape by controlling the light. As a result, three-dimensional objects formed from multiple materials can be manufactured with high precision without complicating the control process.

[0028] (9) In the photoforming method, the step of forming the first pre-exposure material layer may include: forming the first pre-exposure material layer with a first thickness, and the step of forming the second pre-exposure material layer may include: forming the second pre-exposure material layer with a second thickness greater than the first thickness.

[0029] In this case, when forming the second pre-exposure material layer by stretching the second material, interference between the stretching member and the upper surface of the first post-exposure material layer can be prevented. This widens the allowable range of movement accuracy of the stretching member. As a result, the cost of the photoforming apparatus can be reduced. Furthermore, a cured composition layer comprising a first cured portion and a second cured portion with different thicknesses can be easily formed.

[0030] Technical effect

[0031] According to the present invention, three-dimensional objects formed from multiple materials can be manufactured with high precision without complicating the control process. Attached Figure Description

[0032] Figure 1 This is a schematic perspective view of a light-forming device according to an embodiment of the present invention.

[0033] Figure 2 yes Figure 1 A schematic side view of the light-forming device.

[0034] Figure 3 It is shown Figure 1 The flowchart of the first action example of the light modeling device.

[0035] Figure 4 It is shown Figure 1 The flowchart of the first action example of the light modeling device.

[0036] Figure 5 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0037] Figure 6 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0038] Figure 7 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0039] Figure 8 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0040] Figure 9 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0041] Figure 10 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0042] Figure 11 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0043] Figure 12 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0044] Figure 13 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0045] Figure 14 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0046] Figure 15 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0047] Figure 16 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device.

[0048] Figure 17 It is shown Figure 1 A schematic cross-sectional view of a portion of the second action example of the light-forming device.

[0049] Figure 18 It is shown Figure 1 A schematic cross-sectional view of a portion of the second action example of the light-forming device.

[0050] Figure 19 It is shown Figure 1 A schematic cross-sectional view of a portion of the second action example of the light-forming device.

[0051] Figure 20 It is shown Figure 1 A schematic cross-sectional view of a portion of the second action example of the light-forming device.

[0052] Figure 21 It is shown Figure 1 A schematic cross-sectional view of a portion of the second action example of the light-forming device. Detailed Implementation

[0053] Hereinafter, the light modeling apparatus and light modeling method according to embodiments of the present invention will be described with reference to the accompanying drawings.

[0054] (1) Structure of the light modeling device

[0055] Figure 1This is a schematic perspective view of a light-forming device according to an embodiment of the present invention. Figure 2 yes Figure 1 A schematic side view of the light modeling device 100. Figure 1 and Figure 2 In the diagram, as indicated by the arrows, the directions orthogonal to each other in the horizontal plane are called the X and Y directions, and the vertical direction is called the Z direction. This also applies to subsequent diagrams. Figure 1 As shown, the light modeling device 100 includes a supply unit 10, an auxiliary stage unit 20, a modeling stage unit 30, a coating unit 40, a laying material supply unit 50, an exposure unit 60, a removal unit 70, and a control unit 80.

[0056] The supply unit 10 includes a plurality of syringe-type dispensers 11A and 11B, a drive device 12, and cover members 15a and 15b. In this embodiment, two dispensers 11A and 11B are provided. Dispensers 11A and 11B are cylindrical in shape extending along the Z direction and each contains a photocurable material 90. In this embodiment, dispenser 11A contains a photocurable composition containing insulating ceramic powder (hereinafter referred to as first material 90A), and dispenser 11B contains a photocurable composition containing conductive powder (e.g., metal powder) (hereinafter referred to as second material 90B). In this embodiment, the insulating ceramic powder is, for example, a borosilicate glass-based ceramic material (alumina), and the conductive powder is, for example, a silver and palladium powder in a weight ratio of 30:70. The photocurable composition can be liquid, semi-liquid, or a viscous solid. Distributors 11A and 11B may include a compression device (not shown) that is capable of adjusting the ejection volume of the first material 90A and the second material 90B, respectively.

[0057] Supply holes 11a and 11b for supplying first material 90A and second material 90B are formed at the top (bottom) of dispensers 11A and 11B, respectively. The drive unit 12 supports dispensers 11A and 11B so that they can move independently in the X direction above the auxiliary platform 21 (described later). Cover members 15a and 15b have a cylindrical shape capable of rotating about a rotation axis parallel to the Y direction and are held near one end of the auxiliary platform 21 in the X direction by retaining members (not shown). A standby position for dispensers 11A and 11B is provided above cover members 15a and 15b. When dispensers 11A and 11B are in the standby position, the supply holes 11a and 11b of dispensers 11A and 11B are blocked by the outer peripheral surfaces of cover members 15a and 15b.

[0058] The auxiliary stage unit 20 includes an auxiliary stage (coating stage) 21 extending along the X direction and a drive unit 22. The auxiliary stage 21 is disposed to the side of the molding stage 31 of the molding stage unit 30 (described later), and has sides 211 and 212 parallel to the X direction. The auxiliary stage 21 is held by the drive unit 22 so that it can move along the Z direction. Figure 2 As shown, photocurable materials 90 (first material 90A and second material 90B) supplied from the supply hole 11a of dispenser 11A or the supply hole 11b of dispenser 11B are respectively deposited on the upper surface of the auxiliary stage 21.

[0059] like Figure 1 As shown, the molding platform unit 30 includes a rectangular molding platform 31 and a driving device 32. The molding platform 31 has a pair of sides 311 and 312 parallel to the X direction, and another pair of sides 313 and 314 parallel to the Y direction, and has an upper surface perpendicular to the Z direction. The upper surface of the molding platform 31 becomes the molding surface 31a for manufacturing the molded object. The molding platform 31 is held by the driving device 32 so that it can move along the Z direction.

[0060] The applicator unit 40 includes a scraper-shaped applicator 41 extending in the X direction and a cup-shaped member 42. The applicator 41 is held by a drive device (not shown) so that it can move in the Y direction above the molding table 31. The applicator 41 moves from a position above the auxiliary table 21 toward the edge 312 of the molding table 31. Thus, as Figure 2 As shown, the photocurable material 90 (first material 90A or second material 90B) deposited on the auxiliary stage 21 is extended onto the molding surface 31a of the molding stage 31 or the already formed cured composition layer 95 (see below) Figure 15 and Figure 16 Above. Below, the photocurable material 90 to be stretched is referred to as the pre-exposure composition layer.

[0061] The cup-shaped member 42 has an upper opening 42a and is positioned opposite the auxiliary stage 21 across the molding stage 31. A standby position for the applicator 41 is provided on the side of the edge 312 of the molding stage 31. The cup-shaped member 42 is configured such that its upper opening 42a is close to the applicator 41 in the standby position. The cup-shaped member 42 includes, for example, an actuator (not shown) and is movable in the X direction. Additionally, the cup-shaped member 42 includes, for example, a vacuum pump (not shown) and is capable of drawing first material 90A or second material 90B adhered to the applicator 41 from the upper opening 42a.

[0062] The material supply unit 50 includes a film roller 51 extending in the X direction. The film roller 51 is disposed to the side of the edge 311 of the molding table 31. A transparent film 52 extending from the film roller 51 is disposed as the material covering the molding surface 31a of the molding table 31. In the following description, the molding surface 31a covered by the transparent film 52 will sometimes be simply referred to as the molding surface 31a.

[0063] The exposure unit 60 includes an exposure apparatus 61 and a shielding member 62. The exposure apparatus 61 is positioned above the molding stage 31 and cures the pre-exposure composition layer on the exposure molding surface 31a by exposing it to a desired shape. In this embodiment, the exposure apparatus 61 exposes a region of a predetermined shape of the pre-exposure composition layer by scanning a laser in a desired shape. Thus, the exposed portion having a predetermined shape is cured. In this case, the shape of the exposed portion is formed with high precision at the μm level (e.g., 1 μm to several hundred μm). The pre-exposure composition layer is exposed to form a post-exposure composition layer. The post-exposure composition layer includes one or more exposed portions and one or more unexposed portions. The one or more exposed portions are cured to form one or more cured portions.

[0064] The shielding member 62 is configured to shield the laser emission surface 61a of the exposure device 61. The shielding member 62 includes, for example, an actuator (not shown) that is movable in the Y direction.

[0065] The removal section 70 includes an air knife 71 extending in the X direction and a suction section 72. The removal section 70 includes, for example, an actuator (not shown) that enables the air knife 71 and suction section 72 to move in the Y direction. In this embodiment, the removal section 70 is configured to move in the Y direction from the edge 312 of the molding table 31 to a position on the auxiliary table 21. The air knife 71 includes a compressed air supply device (not shown), to which compressed air is supplied from a blower pump or air compressor, and the air knife 71 is configured to eject high-pressure gas. As a result, one or more unexposed portions (uncured portions) of the photocurable material 90 are blown away. The suction section 72 includes a large-capacity exhaust device (not shown) consisting of a vacuum pump or blower pump, and is configured to suction the unexposed portions blown away by the air knife 71. In this state, the upper surface of the molding surface 31a is cleaned by the movement of the air knife 71 and suction section 72 along the Y direction on the upper surface of the molding table 31. Furthermore, by moving the removal unit 70 along the Y direction above the upper surface of the auxiliary table 21, the upper surface of the auxiliary table 21 is cleaned. In this embodiment, the removal unit 70 functions as a cleaning unit for cleaning the upper surface of the auxiliary table 21. Alternatively, a cleaning unit may be provided separately from the removal unit 70. In this case, the cleaning unit includes, for example, an air knife and a suction unit, and is controlled by the control unit 80.

[0066] The control unit 80 controls the operation of the light modeling apparatus 100 by controlling the operation of the supply unit 10, the auxiliary stage unit 20, the modeling stage unit 30, the coating unit 40, the laying material supply unit 50, the exposure unit 60, and the removal unit 70. The control unit 80 includes a main control unit 81 and a storage unit 82. The main control unit 81, for example, is composed of a CPU (Central Processing Unit) and performs control and data processing on various structural components of the light modeling apparatus 100. The storage unit 82 includes, for example, a semiconductor memory or a hard disk, storing shape data representing the three-dimensional shape of the model to be manufactured and control programs. The shape data stored in the storage unit 82 includes, respectively, the curing composition layers 95 (described later) representing the model. Figure 15 and Figure 16 The cross-sectional shape in the horizontal direction and the distribution of multiple materials in each cured composition layer 95 are multiple cross-sectional data.

[0067] In this embodiment, cross-sectional data of group M are stored. M represents the cured composition layer 95 ( Figure 16 The total number of () is an integer greater than or equal to 1 or 2. Each section data includes first section data corresponding to the distribution of the first material 90A and second section data corresponding to the distribution of the second material 90B. By executing the control program stored in the storage unit 82 through the main control device 81, the various structural components of the light modeling device 100 are controlled by the control unit 80.

[0068] (2) Example of the first action of the light modeling device

[0069] Here, the first example of the operation of the light modeling device 100 will be explained. Figure 3 and Figure 4 It is shown Figure 1 The flowchart of the first action example of the light modeling device 100. Figures 5-16 It is shown Figure 1 A schematic cross-sectional view of the first action example of the light modeling device 100.

[0070] First, the main control device 81 sets the value of variable n to 1 (step S1). Then, as... Figure 5 As shown, the auxiliary stage 21 descends so that the height of its upper surface matches the height of the molding surface 31a (step S2). Additionally, the main control device 81 retrieves the nth first cross-sectional data and the second cross-sectional data from the storage unit 82 (step S3). Furthermore, the molding stage 31 descends so that the gap between the molding surface 31a or the uppermost cured composition layer 95 and the lower end of the coater 41 becomes Δt (step S4). When n=1, the molding stage 31 descends so that the gap between the molding surface 31a and the lower end of the coater 41 becomes Δt. When n=2 to M, the molding stage 31 descends so that the gap between the upper surface of the (n-1)th cured composition layer and the lower end of the coater 41 becomes Δt.

[0071] In this state, such as Figure 5 As shown, the dispenser 11A moves along the X direction while spraying the first material 90A onto the upper surface of the auxiliary stage 21 (step S5). As a result, the first material 90A accumulates in a manner that extends along the X direction on the upper surface of the auxiliary stage 21.

[0072] Then, after the coater 41 moves above the upper surface of the auxiliary stage 21, as... Figure 6 As shown, the coater 41 continuously extends the first material 90A from the upper surface of the auxiliary stage 21 onto the molding surface 31a or the upper surface of the cured composition layer 91 (step S6). When n=1, the coater 41 continuously extends the first material 90A from the upper surface of the auxiliary stage 21 onto the molding surface 31a. When n=2 to M, the coater 41 continuously extends the first material 90A from the upper surface of the auxiliary stage 21 onto the upper surface of the (n-1)th cured composition layer 95. Hereinafter, the first material 90A to be extended will be referred to as the first pre-exposure material layer 91A. In this example, the first pre-exposure material layer 91A has a first thickness t1. The magnitude of the first thickness t1 corresponds to the interval Δt.

[0073] Next, as Figure 7 As shown, the exposure apparatus 61 exposes the nth pre-exposure material layer 91A based on the nth first cross-sectional data (step S7). Hereinafter, the pre-exposure material layer 91A to be exposed is referred to as the post-exposure material layer 92A. The post-exposure material layer 92A includes one or more exposed first-exposure portions 92a and one or more unexposed portions 93a. Through exposure, one or more first-exposure portions 92a are cured.

[0074] After that, as Figure 8 As shown, the shielding member 62 shields the ejection surface 61a of the exposure device 61 (step S8). In this state, the air knife 71 and the suction unit 72 operate, and, as... Figure 8 As shown, the material layer 92A after the first exposure is moved along the Y direction above the auxiliary stage 21 along the upper surface of the modeling stage 31, thereby removing one or more unexposed portions 93a (step S9). As a result, one or more first exposed portions 92a remain. Hereinafter, the remaining one or more first exposed portions 92a will be referred to as one or more first cured portions 94A. At this time, the gas environment inside the light modeling apparatus 100 can be purified by an exhaust fan or air purification filter unit (not shown).

[0075] In addition, such as Figure 9 As shown, the air knife 71 and suction unit 72 clean the auxiliary table 21, and the cup-shaped member 42 cleans the applicator 41 (step S10). Then, as... Figure 10 As shown, the shielding member 62 removes the shielding of the emission surface 61a of the exposure device 61 (step S11). As a result, the emission surface 61a of the exposure device 61 is exposed.

[0076] Next, the dispenser 11B moves along the X direction while spraying the second material 90B onto the upper surface of the auxiliary stage 21 (step S12). Thus, as... Figure 10 As shown, the second material 90B is deposited in a manner that extends along the X direction on the upper surface of the auxiliary stage 21.

[0077] Then, after the coater 41 moves above the upper surface of the auxiliary stage 21, as... Figure 11 As shown, the coater 41 extends the second material 90B from the upper surface of the auxiliary stage 21 onto the molding surface 31a or the upper surface of the cured composition layer 95 (step S13). When n=1, the coater 41 continuously extends the second material 90B from the upper surface of the auxiliary stage 21 onto the molding surface 31a. When n=2 to M, the coater 41 continuously extends the second material 90B from the upper surface of the auxiliary stage 21 onto the upper surface of the (n-1)th cured composition layer 95. Hereinafter, the extended second material 90B will be referred to as the second pre-exposure material layer 91B. The second pre-exposure material layer 91B is formed to contact one or more first cured portions 94A. In this example, the second pre-exposure material layer 91B has a first thickness t1.

[0078] Next, as Figure 12 As shown, the exposure apparatus 61 exposes the second pre-exposure material layer 91B based on the nth second cross-sectional data (step S14). Hereinafter, the exposed second pre-exposure material layer 91B is referred to as the second post-exposure material layer 92B. The second post-exposure material layer 92B includes one or more exposed second-exposure portions 92b and one or more unexposed portions 93b. Through exposure, one or more second-exposure portions 92b are cured.

[0079] After that, as Figure 13 As shown, the shielding member 62 shields the ejection surface 61a of the exposure device 61 (step S15). In this state, the air knife 71 and the suction unit 72 operate and move along the upper surface of the second exposed material layer 92B on the modeling stage 31 above the auxiliary stage 21, thereby removing one or more unexposed portions 93b (step S16). As a result, one or more second exposed portions 92b remain. Hereinafter, the remaining one or more second exposed portions 92b will be referred to as one or more second cured portions 94B. At this time, the gas environment inside the light modeling device 100 can be purified by an exhaust fan or air purification filter unit (not shown). In addition, as Figure 14As shown, the air knife 71 and suction unit 72 clean the auxiliary table 21, and the cup-shaped member 42 cleans the applicator 41 (step S17). Then, as... Figure 15 As shown, the shielding member 62 removes the shielding of the emission surface 61a of the exposure device 61 (step S18). As a result, the emission surface 61a of the exposure device 61 is exposed.

[0080] In this way, the nth cured composition layer 95 is formed on the molding surface 31a or on the cured composition layer 95. The cured composition layer 95 includes one or more first cured portions 94A and one or more second cured portions 94B. When n=1, the first cured composition layer 95 is formed on the molding surface 31a. When n=2 to M, the nth cured composition layer 95 is formed on the (n-1)th cured composition layer 95.

[0081] When at least one cured composition layer 95 is formed, at least one second exposed portion 92b (at least one second cured portion 94B) is cured and bonded to at least one first cured portion 94A of the same or lower layer. Alternatively, when at least one cured composition layer 95 is formed, at least one first exposed portion 92a (at least one first cured portion 94A) is cured and bonded to at least one second cured portion 94B of the lower layer. That is, different types of materials are bonded by photocuring.

[0082] After that, as Figure 4 As shown, the main control device 81 increments the value of variable n by 1 (step S19). The main control device 81 determines whether the value of variable n is greater than the total number M (step S20). If the value of variable n is less than the total number M, the main control device 81 returns to step S3 and repeats the processing of steps S3 to S20. Thus, as Figure 16 As shown, a product with M units (in) is manufactured. Figure 16 In the example, there are 6 layers of cured composition 95 in the model SH1. When the value of variable n is greater than the total number M in step S20, the main control device 81 terminates the control of the light modeling device 100.

[0083] It should be noted that the processing order of steps S1 to S20 can be appropriately changed, and multiple steps can be performed simultaneously. For example, the cleaning of the auxiliary stage 21 and / or the coater 41 in step S10 can be performed at any time after step S6 and before step S12. However, the cleaning of the auxiliary stage 21 and / or the coater 41 is performed in a manner that does not affect the material layer 91A before the first exposure. For example, the cleaning unit, which is provided separately from the removal unit 70, can have a cleaning chamber that is separate from the space on the molding stage 31, and the auxiliary stage 21 and / or the coater 41 can be cleaned in the cleaning chamber.

[0084] Next, the model SH1 is degreased and sintered. In this embodiment, degreasing and sintering are performed at a temperature of approximately 100 to 2100 degrees Celsius. Through the above actions, a three-dimensional model SH1 formed of a plurality of materials is manufactured. In this embodiment, a three-dimensional wiring structure is formed including one or more first cured portions 94A formed of an insulating ceramic material and one or more second cured portions 94B formed of a conductive material.

[0085] (3) Example of the second action of the light modeling device 100

[0086] A second example of the operation of the light modeling device 100 will be described. The differences between the second example of the operation and the first example of the operation are as follows. Figures 17-21 It is shown Figure 1 A schematic cross-sectional view of a portion of the second operating example of the light modeling device 100. In the second operating example, in Figure 10 After the process, execute Figures 17-21 The process, to replace Figures 11-16 The process.

[0087] In the second action example, in the first action example Figure 10 After removing one or more unexposed portions 93a of the material layer 92A after the first exposure, the molding stage 31 is lowered so that the gap between the upper surface of the molding surface 31a or the cured composition layer 95 and the lower end of the coater 41 becomes Δt+h. Here, h is a value greater than 0.

[0088] Next, after the coater 41 moves above the upper surface of the auxiliary stage 21, as... Figure 17 As shown, the coater 41 extends the second material 90B from the upper surface of the auxiliary stage 21 onto the molding surface 31a or the upper surface of the cured composition layer. When n=1, the coater 41 continuously extends the second material 90B from the upper surface of the auxiliary stage 21 onto the molding surface 31a. When n=2 to M, the coater 41 continuously extends the second material 90B from the upper surface of the auxiliary stage 21 onto the upper surface of the (n-1)th cured composition layer 95. Hereinafter, the extended second material 90B is referred to as the second pre-exposure material layer 91B. The second pre-exposure material layer 91B is formed to contact one or more first cured portions 94A. In this example, the second pre-exposure material layer 91B has a second thickness t2 that is thicker than the first thickness t1. The magnitude of the second thickness t2 corresponds to the interval Δt+h. In this case, the second pre-exposure material layer 91B is formed on the molding surface 31a or the upper surface of the cured composition layer 95 in such a way that it covers one or more of the first cured portions 94A.

[0089] Next, as Figure 18As shown, the exposure apparatus 61 exposes the pre-exposure material layer 91B based on the nth second cross-sectional data. This forms the post-exposure material layer 92B. The post-exposure material layer 92B includes one or more second-exposure portions 92b and one or more unexposed portions 93b. One or more second-exposure portions 92b are cured. In this example, the one or more second-exposure portions 92b and one or more unexposed portions 93b have a second thickness t2 that is thicker than the first thickness t1.

[0090] After that, as Figure 19 As shown, the shielding member 62 shields the ejection surface 61a of the exposure apparatus 61. In this state, the air knife 71 and the suction unit 72 operate and move along the upper surface of the second exposed material layer 92B on the modeling stage 31 above the auxiliary stage 21, thereby removing one or more unexposed portions 93b. As a result, one or more second exposed portions 92b remain. Hereinafter, the remaining one or more second exposed portions 92b will be referred to as one or more second cured portions 94B. In this operating example, the one or more second cured portions 94B have a second thickness t2 that is greater than the first thickness t1. At this time, the gas environment inside the light modeling apparatus 100 can be purified by an exhaust fan or an air purification filter unit, etc.

[0091] In addition, such as Figure 20 As shown, the air knife 71 and suction unit 72 clean the auxiliary stage 21, and the cup-shaped member 42 cleans the coating device 41. In this embodiment, the removal unit 70 functions as a cleaning unit on the upper surface of the cleaning auxiliary stage 21. The cleaning unit may also be provided independently of the removal unit 70. In this case, the cleaning unit includes, for example, an air knife and a suction unit, and is controlled by the control unit 80. Afterwards, the shielding member 62 removes the shielding from the ejection surface 61a of the exposure device 61. Thus, the ejection surface 61a of the exposure device 61 is exposed.

[0092] In this way, the nth cured composition layer 95 is formed on the molding surface 31a or on the cured composition layer 95. The cured composition layer 95 includes one or more first cured portions 94A and one or more second cured portions 94B. When n=1, the first cured composition layer 95 is formed on the molding surface 31a. When n=2 to M, the nth cured composition layer 95 is formed on the (n-1)th cured composition layer 95.

[0093] When at least one cured composition layer 95 is formed, at least one second exposed portion 92b (at least one second cured portion 94B) is cured and bonded to at least one first cured portion 94A of the same or lower layer. Alternatively, when at least one cured composition layer 95 is formed, at least one first exposed portion 92a (at least one first cured portion 94A) is cured and bonded to at least one second cured portion 94B of the lower layer. That is, different types of materials are bonded by photocuring.

[0094] By repeating the above process, such as Figure 21 As shown, a product with M units (in) is manufactured. Figure 16 In the example, there are 6) solidified composition layers 95 of the laminated structure of the model SH2.

[0095] (4) Effects of the implementation method

[0096] According to the light modeling apparatus 100 of this embodiment, after forming a first pre-exposure material layer 91A by extending a first material 90A, one or more first cured portions 94A are formed by exposure and removal. In this case, the first pre-exposure material layer 91A can be formed with simple control of the coating device 41, and one or more first cured portions 94A can be formed accurately and with high precision in a predetermined shape by controlling the light. Similarly, after forming a second pre-exposure material layer 91B by extending a second material 90B, one or more second cured portions 94B are formed by exposure and removal. In this case, the second pre-exposure material layer 91B can be formed with simple control of the coating device 41, and one or more second cured portions 94B can be formed accurately and with high precision in a predetermined shape by controlling the light. As a result, three-dimensional models SH1 formed from different types of materials can be manufactured with high precision without complicating the control process.

[0097] Furthermore, the supply and stretching of the first material 90A and the supply and stretching of the second material 90B can be performed using a common auxiliary stage 21. Therefore, it is possible to suppress the complexity of the structure of the photoforming device 100 and to simplify the control of the coating device 41.

[0098] Furthermore, since the upper surface of the auxiliary stage 21 is cleaned after removing one or more unexposed portions 93a of the material layer 92A after the first exposure and after removing one or more unexposed portions 93b of the material layer 93B after the second exposure, mixing of the first material 90A and the second material 90B can be prevented.

[0099] Furthermore, since the emission surface 61a of the exposure apparatus 61 is shielded when one or more unexposed portions 93a, 93b of the first exposed material layer 92A and the second exposed material layer 92B are removed, dust can be prevented from adhering to the emission surface 61a of the exposure apparatus 61 even if the removed one or more unexposed portions 93a, 93b are scattered as dust. As a result, the frequency of maintenance and cleaning of the exposure apparatus 61 is reduced.

[0100] Furthermore, in the second example of operation, when forming the second pre-exposure material layer 91B by extending the second material 90B, interference between the coater 41 and the upper surface of the first post-exposure material layer 92A can be prevented. This widens the allowable range of movement accuracy for the coater 41. As a result, the cost of the photoforming apparatus 100 can be reduced. Additionally, a cured composition layer 95 comprising a first cured portion 94A and a second cured portion 94B with different thicknesses can be easily formed.

[0101] In addition, by adjusting the spacing between the upper surface of the molding surface 31a or the first curing portion 94A and the second curing portion 94B and the lower end of the extension member, and by moving the coating device 41 parallel to the molding surface 31a, it is possible to easily and accurately form a first pre-exposure material layer 91A with a first thickness t1 and a second pre-exposure material layer 91B with a second thickness t2.

[0102] (5) Other implementation methods

[0103] (5-a) In the above embodiment, the shapes SH1 and SH2 are made of two materials; however, the shapes can be made of three or more materials. In this case, for example, three or more dispensers are provided that hold three or more different photocurable materials 90. Figure 15 After the initial process, other materials are used for further processing. Figures 11-15 The process. Additionally, in Figure 15 After the initial process, other materials are used for further processing. Figures 17-20 The process.

[0104] (5-b) In the above embodiments, a plurality of cured composition layers 95 are formed to have the same thickness, but the present invention is not limited thereto. Some or all of the plurality of cured composition layers 95 may have different thicknesses.

[0105] (5-c) In the above embodiment, the exposure apparatus 61 exposes the entire thickness direction (from the upper surface to the lower surface) of each first pre-exposure material layer 91A and each second pre-exposure material layer 91B. However, the exposure apparatus 61 may also expose only a portion of the thickness direction of each first pre-exposure material layer 91A and each second pre-exposure material layer 91B. Thus, one or more exposure portions having a thickness smaller than that of the first pre-exposure material layer 91A or the second pre-exposure material layer 91B can be formed. Therefore, the thickness of each cured portion included in each cured composition layer 95 can be arbitrarily adjusted.

[0106] (5-d) In the above embodiment, the removal unit 70 is composed of an air knife 71 and a suction unit 72, but the present invention is not limited thereto. The removal unit 70 may include a nozzle that sprays cleaning fluid (water, ethanol, or surfactant, etc.) or a nozzle that sprays a mist of cleaning fluid. In this case, a recovery device for recovering the cleaning fluid may be provided in the light modeling apparatus 100. In addition, the removal unit 70 may include a removal chamber in which the unexposed portions 93a and 93b are removed. In addition, the removal unit 70 may also be provided separately from other structures of the light modeling apparatus 100. In this case, the operator can manually move the exposed composite layer from the modeling table 31 to the removal unit 70. In addition, the removal unit 70 can also be controlled manually by the operator.

[0107] (5-e) In the above embodiment, the cleaning of the upper surface of the auxiliary stage 21 is performed by the air knife 71 and the suction unit 72, but the present invention is not limited thereto. A nozzle for spraying cleaning fluid (water, ethanol, or surfactant, etc.) for cleaning the upper surface of the auxiliary stage 21, or a nozzle for spraying a mist of cleaning fluid, may also be provided separately in the light modeling device 100. In this case, when the first material 90A and the second material 90B are different, the mixing of the first material 90A and the second material 90B can be sufficiently prevented.

[0108] (5-f) In the above embodiments, each cured composition layer 95 includes a plurality of cured portions formed of a plurality of materials, but a portion of the cured composition layer 95 may also include only one or a plurality of cured portions formed of a single material.

[0109] (5-g) In the above embodiment, one or more unexposed portions are removed each time each first post-exposure material layer 92A and each second post-exposure material layer 92B is formed. However, the removal of multiple unexposed portions of multiple layers may be performed after multiple first post-exposure material layers 92A are formed or after multiple second post-exposure material layers 92B are formed.

[0110] (5-h) In the above embodiment, the material layer before exposure is exposed by scanning with a laser, but batch exposure can also be performed using multiple mask components having the desired light-transmitting pattern.

[0111] (5-i) In the above embodiments, an example of a method for manufacturing a model with a three-dimensional wiring structure has been shown, but the present invention is not limited thereto. For example, a catalyst filter can also be manufactured using the light modeling apparatus 100 of the above embodiments, by forming a frame or structure from ceramic or other materials and embedding a catalytically active material on the surface of the frame or structure. In this case, the catalytic efficiency can be improved by the three-dimensional structure of the catalyst filter. Alternatively, a piping structure can be manufactured by forming a frame or structure from a metallic material and covering the surface of the frame or structure with a ceramic material. This piping structure has the strength of a metal and is resistant to chemicals and corrosion.

[0112] (5-j) In the above embodiments, a photocurable composition containing insulating powder and a photocurable composition containing conductive powder are used as photocurable materials, but the photocurable material is not limited to these. For example, a photocurable composition without powder may also be used as a photocurable material.

[0113] (5-k) In the above embodiments, a photocurable composition containing insulating powder and conductive powder was used as the photocurable material; however, the powder contained in the photocurable composition is not limited to the above embodiments. For example, oxides, carbides, borides, nitrides, apatite Ca5(PO4)3(F,Cl,OH)1, carbon (C), and metals can be used as the powder contained in the photocurable material. As oxides, the following can be used: zirconium oxide (ZrO2), yttrium oxide (Y2O3), aluminum oxide (Al2O3), lanthanum oxide (La2O3), magnesium oxide (MgO), calcium oxide (CaO), silicon oxide (SiO2), nickel oxide (NiO), copper oxide (CuO), iron oxide, barium titanate (BaTiO3), barium zirconate (BaZrO3), lead zirconate titanate (Pb(Zrx,Ti1-x)O3), strontium titanate (SrTiO3), strontium aluminate, calcium titanate (CaTiO3), magnesium titanate (MgTiO3), lanthanum titanate (La2Ti2O7), and mullite (Al6O3). 13Borosilicate glasses and their composite oxides, etc., can be used as carbides, for example, silicon carbide (SiC), tungsten carbide (WC), and titanium carbide (TiC). Aluminum nitrides, for example, aluminum nitride (AlN), silicon nitride (Si3N4), and boron nitride (BN) can be used. Furthermore, when using nitrides in photocurable compositions, mixtures of nitrides and oxides can be used to facilitate the sintering of the photocurable material. Zirconium boride (ZrB2) and magnesium boride (MgB2) can be used as borides, for example. As metals, base metals (iron, copper, nickel, aluminum, lead, zinc, tin, tungsten, molybdenum, tantalum, magnesium, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium, thallium, etc.) and precious metals (gold, silver, platinum, palladium, rhodium, iridium, ruthenium, osmium, rhenium, etc.) can be used, as well as alloys of two or more base metals and precious metals, and intermetallic compounds, etc.

[0114] (5-l) In the above embodiment, each cured composition layer is formed by a syringe, but any layer may also be formed by other methods such as inkjet printing. In addition, in the above embodiment, each cured composition layer is formed by a photocurable material, but any layer may also be formed by other materials such as a heat-soluble resin.

[0115] (5-m) In the above embodiment, the first material 90A and the second material 90B are supplied to the auxiliary stage 21, and the first material 90A and the second material 90B on the auxiliary stage 21 are extended to the molding stage 31 by the coating agent 41. However, the present invention is not limited thereto. For example, the first material 90A and the second material 90B may be supplied directly along the edge 311 at the end of the molding stage 31, and the first material 90A and the second material 90B at the end of the molding stage 31 may be extended to the molding stage 31 by the coating agent 41.

[0116] (6) Reference method

[0117] The photoforming method of the reference method includes: a step of supplying a photocurable material; a step of forming a pre-exposure material layer on a modeling surface by extending the photocurable material in such a way as to contact one or more first portions formed of a material different from the photocurable material; a step of forming a post-exposure material layer comprising one or more exposed portions and one or more unexposed portions by exposing the pre-exposure material layer; and a step of leaving one or more exposed portions as one or more cured portions by removing one or more unexposed portions from the post-exposure material layer, thereby producing a model comprising one or more first portions and one or more cured portions.

[0118] According to this photoforming method, a pre-exposure material layer is formed by extending a photocurable material to contact a first part. After forming the pre-exposure material layer, one or more cured parts are formed by exposure and removal. In this case, by controlling the extension of the photocurable material, the pre-exposure material layer can be formed, and one or more cured parts can be accurately formed in a predetermined shape by controlling the light. As a result, three-dimensional shapes formed from multiple materials can be manufactured with high precision without complicating the control process.

[0119] In a photoforming method, one or more first portions may have a first thickness, and the step of forming a pre-exposure material layer may include stretching a photocurable material to give the pre-exposure material layer a second thickness greater than the first thickness.

[0120] When forming the pre-exposure material layer by stretching, interference between the stretching member and the upper surface of the first part can be prevented. This widens the allowable range of movement accuracy for the stretching member. Furthermore, it allows for the easy formation of first parts and cured parts with different thicknesses.

Claims

1. A light-forming device, in, include: A display stand with a decorative surface; The supply department selectively supplies a first material as a photocurable material or a second material that is different from the first material as a photocurable material. An extension member is formed to form a first pre-exposure material layer by extending the first material supplied by the supply unit, and to form a second pre-exposure material layer by extending the second material supplied by the supply unit. The exposure unit forms a first exposed material layer comprising one or more first exposed portions and one or more first unexposed portions by exposing the first pre-exposure material layer extended by the extension member, and forms a second exposed material layer comprising one or more second exposed portions and one or more second unexposed portions by exposing the second pre-exposure material layer extended by the extension member. The removal section removes one or more of the first unexposed portions and one or more of the second unexposed portions from the first post-exposure material layer and the second post-exposure material layer; and Control Department The control unit controls the supply unit to supply the first material. The control unit controls the stretching member to stretch the first material by moving the stretching member parallel to the molding surface, forming a first pre-exposure material layer on the molding surface or on a cured composition layer formed on the molding surface. The first pre-exposure material layer has a first thickness. The control unit controls the exposure unit to form a first exposed material layer comprising one or more of the exposed portions by exposing the first pre-exposure material layer. The control unit controls the removal unit to leave one or more of the first exposed portions as one or more first cured portions by removing one or more of the first unexposed portions from the first exposed material layer. The control unit controls the supply unit to supply the second material. The control unit controls the stretching member to stretch the second material by moving the stretching member parallel to the molding surface after removing one or more of the first unexposed portions, thereby forming a second pre-exposure material layer that covers one or more of the first cured portions. The second pre-exposure material layer has a second thickness greater than the first thickness. The control unit controls the exposure unit to form a second exposed material layer comprising one or more second exposed portions by exposing the second pre-exposure material layer. The control unit controls the removal unit to leave one or more of the second exposed portions as one or more second cured portions by removing one or more of the second unexposed portions from the second exposed material layer. Thus, the light-forming device manufactures a shape comprising one or more of the first cured portions and one or more of the second cured portions.

2. The light modeling device according to claim 1, wherein, The light modeling device also includes: An auxiliary platform is configured to be adjacent to the modeling platform; and The purification unit purifies the upper surface of the auxiliary platform. The control unit controls the supply unit to supply the first material to the upper surface of the auxiliary table. The control unit controls the extension member to continuously extend the first material on the auxiliary platform from the upper surface of the auxiliary platform to the molding surface or the cured composition layer after the first material is supplied. The control unit controls the supply unit to supply the second material to the upper surface of the auxiliary table after the first material has been expanded. The control unit controls the extension member to continuously extend the second material from the upper surface of the auxiliary platform onto the molding surface or the cured composition layer after the second material is supplied. The control unit controls the purification unit to purify the upper surface of the auxiliary table after the first material has been spread and before the second material is supplied.

3. The light modeling device according to claim 1, wherein, The light modeling device also includes an auxiliary platform, which is configured to be adjacent to the modeling platform. The control unit controls the supply unit to supply the first material to the upper surface of the auxiliary table. The control unit controls the extension member to continuously extend the first material on the auxiliary platform from the upper surface of the auxiliary platform to the molding surface or the cured composition layer after the first material is supplied. The control unit controls the removal unit to clean the upper surface of the auxiliary table after the first material has been spread and before the second material is supplied.

4. The light modeling device according to claim 1, wherein, The extension member has a lower end that extends parallel to the shaped surface. The control unit controls the stretching member to move it while the first material is stretched, maintaining a distance between its lower end and the molding surface or the upper surface of the cured composition layer equivalent to the first thickness. The control unit controls the stretching member to move the stretching member at a distance from the lower end to the molding surface or the upper surface of the cured composition layer, which is equivalent to the second thickness, during the stretching of the second material.

5. The light modeling device according to claim 1, wherein, The light modeling device also includes a shielding component that shields the exposure section. The control unit controls the shielding member to shield the exposure portion when removing one or more of the first unexposed portions and when removing one or more of the second unexposed portions.

6. The light modeling apparatus according to claim 1, wherein, One of the first material and the second material contains an insulating material. The other of the first material and the second material comprises a conductive material.

7. A light modeling method, wherein, include: The step of supplying the first material as a photocurable material; The first material is extended by moving the extension member parallel to the molding surface, and a first pre-exposure material layer is formed on the molding surface or on the cured composition layer formed on the molding surface in such a way that it has a first thickness. The step of forming a first post-exposure material layer comprising one or more exposed portions by exposing the first pre-exposure material layer; The step of removing one or more first unexposed portions from the first exposed material layer, leaving one or more first exposed portions as one or more first cured portions; The step of supplying a second material, which is different from the first material, as a photocurable material. After removing one or more of the first unexposed portions, the second material is extended by moving the extension member parallel to the shaping surface to cover one or more of the first cured portions and form a second pre-exposure material layer with a second thickness greater than the first thickness. The step of forming a second exposed material layer comprising one or more second exposed portions by exposing the second pre-exposure material layer; as well as The step of removing one or more second unexposed portions from the second exposed material layer, leaving one or more second exposed portions as one or more second cured portions. Thus, the light-forming method is used to manufacture a model comprising one or more of the first cured portions and one or more of the second cured portions.

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