Three-dimensional modeling device

Abstract

This invention provides a three-dimensional modeling apparatus that can improve the quality of three-dimensional models. The three-dimensional modeling apparatus includes: a moving mechanism for moving at least one of a first modeling head and a second modeling head relative to a stage; and a control unit for controlling the first modeling head, the second modeling head, and the moving mechanism. The control unit causes the first modeling head to perform modeling of a first corrector (310A) on the stage, and causes the second modeling head to perform modeling of a second corrector (320A) on the stage. The first corrector (310A) has multiple modeling lines (310A1) arranged at first intervals (W1) in a first direction on the stage, and the second corrector (320A) has multiple modeling lines (320A1) arranged at second intervals (W2) wider than the first interval (W1) in the first direction on the stage.

Description

Technical Field

[0001] This invention relates to a three-dimensional modeling device. Background Technology

[0002] Patent document 1 discloses a three-dimensional modeling device that corrects the vertical distance between the front end of the injection nozzle and the mounting surface on the stage by measuring the distance between the front end of the injection nozzle in the modeling head and the stage sensor in the modeling head.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2017-217792

[0004] However, in the technology described in Patent Document 1, when multiple modeling heads are used, if the positions of the modeling heads relative to each other in the horizontal plane are not corrected, there are technical problems such as reduced dimensional accuracy and reduced strength of the modeled object. That is, a three-dimensional modeling device that can correct the positional offset of multiple modeling heads in the horizontal plane is needed. Summary of the Invention

[0005] The three-dimensional modeling device includes: a stage; a first modeling head having a first nozzle for supplying a first material to the stage; a second modeling head having a second nozzle for supplying a second material different from the first material to the stage; a moving mechanism for moving at least one of the first modeling head and the second modeling head relative to the stage; and a control unit for controlling the first modeling head, the second modeling head, and the moving mechanism. The control unit causes the first modeling head to perform modeling of a first corrector on the stage, and causes the second modeling head to perform modeling of a second corrector on the stage. The first corrector has a plurality of modeling lines arranged at first intervals in a first direction on the stage, and the second corrector has a plurality of modeling lines arranged at second intervals wider than the first interval in the first direction on the stage. Attached Figure Description

[0006] Figure 1 It is a cross-sectional view showing the structure of a three-dimensional modeling device.

[0007] Figure 2 It is a cross-sectional view showing the structure of the head.

[0008] Figure 3 This is a top view showing the structure of the first and second correctors.

[0009] Figure 4 This is a top view showing the relationship between the shape lines of the first corrector and the shape lines of the second corrector.

[0010] Figure 5This diagram illustrates how to read the scales of the first and second calibration bodies.

[0011] Figure 6 It is a diagram illustrating the positional offsets in the X and Y directions.

[0012] Figure 7 This is a diagram showing the content displayed on the display unit.

[0013] Figure 8 This is a diagram showing the content displayed on the display unit.

[0014] Figure 9 This diagram illustrates how to calculate the offset using a distance sensor.

[0015] Figure 10 This is a top view showing the structure of the corrected body in the modified example.

[0016] Figure 11 It is a chart illustrating the relationship between the scale format and the minimum reading value.

[0017] Explanation of reference numerals in the attached figures

[0018] 100: Molding head; 100a: First molding head; 100b: Second molding head; 110: Nozzle; 110a: First nozzle; 110b: Second nozzle; 120: Material supply section; 121: Supply path; 130: Material melting section; 131: Planar spiral component; 132: Barrel; 133: Connecting hole; 134: Shell; 135: Groove; 136: Groove forming surface; 137: Spiral component opposing surface; 140: Drive motor; 150: Heater; 200: Stage; 250: Base layer; 300: Molding material; 300a: Three-dimensional model; 310a, 320a: End; 310A, 310B: First correction body; 310A1, 310B1: Molding line; 310A2, 310B2: First... 310A3: Image of the first calibration body; 310C1, 320C1: Clearing modeling lines; 315: Image captured; 316: Reference bar setting unit; 316a: Reference bar; 317: Measurement bar setting unit; 317a: Measurement bar; 320A, 320B: Second calibration body; 320A1, 320B1: Modeling lines; 320A2, 320B2: Image of the second calibration body; 320A3: Height information; 330a, 330b: Scale information; 400: Moving mechanism; 500: Control unit; 510: Storage unit; 520: Image processing unit; 530: Calculation unit; 600: Display unit; 601a, 601b: Scale information; 700: Camera as a camera mechanism; 1000: Three-dimensional modeling device. Detailed Implementation

[0019] In the following figures, the three mutually orthogonal axes are referred to as the X-axis, Y-axis, and Z-axis. The direction along the X-axis is designated as the "X-direction," the direction along the Y-axis as the "Y-direction," and the direction along the Z-axis as the "Z-direction." The direction of the arrow is the "+" direction, and the direction opposite to the "+" direction is the "-" direction. It should be noted that the +Z direction is sometimes referred to as "up" or "above," and the -Z direction as "down" or "below." The view from the +Z direction is called a top view or a top-down view. Furthermore, the surface on the +Z side is designated as the upper surface, and the surface on the opposite side (the -Z direction) is designated as the lower surface.

[0020] First, refer to Figure 1 as well as Figure 2 This describes the structure of the 3D modeling device 1000.

[0021] The three-dimensional modeling device 1000 sprays thermoplastic resin-modified modeling material 300 (see reference) from the modeling head 100 onto the stage 200. Figure 2 Meanwhile, the moving mechanism 400 is driven to change the relative position of the modeling head 100 and the stage 200. As a result, the three-dimensional modeling device 1000 shapes a three-dimensional object 300a of the required shape on the stage 200.

[0022] like Figure 1 As shown, the three-dimensional modeling device 1000 includes: a stage 200; a first modeling head 100a and a second modeling head 100b, which are disposed opposite to the stage 200; a moving mechanism 400; and a control unit 500, which controls the first modeling head 100a, the second modeling head 100b and the moving mechanism 400.

[0023] The first shaping head 100a has a first nozzle 110a that supplies a first material to the stage 200. The second shaping head 100b has a second nozzle 110b that supplies a second material different from the first material to the stage 200.

[0024] As described above, the moving mechanism 400 moves at least one of the first molding head 100a and the second molding head 100b relative to the stage 200. The moving mechanism 400 is composed of a three-axis positioner that moves the stage 200 in the X, Y, and Z directions by the driving force of three motors. Each motor is driven under the control of the control unit 500.

[0025] The control unit 500 is, for example, a computer equipped with a processor, a storage device, and an input / output interface for inputting and outputting signals to and from the outside. In this embodiment, the control unit 500 controls the operation of the first modeling head 100a, the second modeling head 100b, and the moving mechanism 400 by executing programs and commands stored in the storage device through the processor, and performs modeling processing on the three-dimensional model 300a based on modeling data.

[0026] The shaping data is created, for example, by having slicer software installed in a computer connected to the 3D modeling device 1000 read shape data. Shape data is data representing the target shape of the 3D model 300a created using 3D CAD (Computer-Aided Design) software or 3D CG (Computer Graphics) software. Shape data may be in formats such as STL (Standard Triangulated Language) or AMF (Additive Manufacturing File Format). The slicer software divides the target shape of the 3D model 300a into layers of a specified thickness, creating shaping data for each layer. The shaping data is represented by G-code, etc.

[0027] The modeling data includes, for example, information related to the movement path of the nozzle 110 relative to the stage 200, the amount of modeling material 300 ejected from the nozzle 110, and the shape and area of ​​each of the multiple modeling layers constituting the three-dimensional model 300a. The control unit 500 acquires the modeling data from a recording medium such as a computer or a USB (Universal Serial Bus) memory connected to the three-dimensional modeling device 1000.

[0028] Next, refer to Figure 2 This section describes the structure of one of the styling heads 100, namely the first styling head 100a and the second styling head 100b. It should be noted that since the first styling head 100a and the second styling head 100b have the same structure, they are described as styling head 100.

[0029] The molding head 100 includes a material supply section 120, a material melting section 130, and a nozzle 110. The material supply section 120 and the material melting section 130 are connected by a supply path 121. The material melting section 130 and the nozzle 110 are connected by a connecting hole 133. The molding head 100 melts at least a portion of the solid material on the stage 200 to form a paste-like molding material 300.

[0030] The material supply section 120 contains materials in granular or powder form. In this embodiment, the first and second materials are granular ABS resin. The material supply section 120 in this embodiment is composed of a hopper. The material contained in the material supply section 120 is supplied to the material melting section 130 via a supply path 121 provided below the material supply section 120.

[0031] The material melting section 130 includes: a housing 134; a planar spiral member 131 housed within the housing 134; a drive motor 140 for driving the planar spiral member 131; and a barrel 132 fixed below the planar spiral member 131 within the housing 134.

[0032] The planar helical member 131 has a flat cylindrical shape and is a helical member with a vortex-shaped groove 135 formed on the bottom surface of the cylinder, extending from the outer periphery of the cylinder towards the central axis AX of the cylinder. "Flat" means that the height is smaller than the diameter. The bottom surface of the planar helical member 131 is referred to as the groove forming surface 136. The planar helical member 131 is arranged with the central axis AX parallel to the Z direction.

[0033] The drive motor 140, driven under the control of the control unit 500, is connected to the upper surface of the planar helical member 131. The planar helical member 131 rotates within the housing 134 due to the torque generated by the drive motor 140.

[0034] The barrel 132 has a helical opposing surface 137 opposite to the groove forming surface 136 of the planar helical component 131. A connecting hole 133 is provided on the helical opposing surface 137 at a position on the central axis AX of the planar helical component 131. A heater 150 is built into the barrel 132. The temperature of the heater 150 is controlled by the control unit 500.

[0035] The material supplied between the groove 135 of the rotating planar auger 131 and the opposing surface 137 of the auger of the barrel 132 is at least partially melted by the rotation of the planar auger 131 and the heating of the heater 150, becoming a fluid, paste-like molding material 300. Through the rotation of the planar auger 131, the molding material 300 is supplied along the groove 135 to the connecting hole 133 provided in the barrel 132.

[0036] Nozzle 110 is connected to connecting hole 133. Molding material 300 supplied from material melting section 130 to nozzle 110 via connecting hole 133 is ejected from nozzle 110 onto stage 200.

[0037] A base layer 250 is disposed on the stage 200. Three-dimensional objects 300a, shaped by modeling material 300, namely first correctors 310A and 310B and second correctors 320A and 320B (see reference) are disposed on the base layer 250. Figure 3In other words, a base layer 250 is disposed between the first correction bodies 310A, 310B and the second correction bodies 320A, 320B and the stage 200. It should be noted that, for example, a sample plate, a shaping sheet, etc. can be used as the base layer 250.

[0038] Thus, because the base layer 250 is provided, by molding the first corrector bodies 310A and 310B and the second corrector bodies 320A and 320B on the base layer 250, the base layer 250 containing the first corrector bodies 310A and 310B and the second corrector bodies 320A and 320B can be removed from the stage 200 for verification. Furthermore, because the corrector bodies 310 and 320 are molded on the base layer 250, for example, the fit between the base layer 250 and the corrector bodies 310 and 320 can be improved compared to the case where the corrector bodies 310 and 320 are tightly fitted onto the stage 200.

[0039] It should be noted that the base layer 250 can also be shaped using either the first shaping head 100a or the second shaping head 100b. Therefore, it can be easily formed without the need to prepare new sample plates or shaping sheets.

[0040] In addition, such as Figure 1 As shown, the 3D modeling device 1000 includes, in addition to the control unit 500, a display unit 600, a storage unit 510, an image processing unit 520, a computing unit 530, and a camera 700 as a camera mechanism.

[0041] Display unit 600, for example, displays model lines 310A1, 310B1, 320A1, and 320B1 captured by camera 700 (see reference). Figure 3 In addition, the display unit 600 has an input unit for correcting the positional offset of the first styling head 100a and the second styling head 100b.

[0042] The camera 700 may include imaging elements such as a CCD (Charge Coupled Device) sensor or a CMOS (Complementary Metal Oxide Semiconductor) sensor.

[0043] The storage unit 510 stores, for example, images of the first correction bodies 310A and 310B and the second correction bodies 320A and 320B captured by the camera 700.

[0044] Image processing unit 520, for example, processes the ends 310a, 320a of the first correction bodies 310A, 310B or the second correction bodies 320A, 320B (see reference). Figure 4The cutting process is performed to make it easy to confirm the positional offset of the first styling head 100a and the second styling head 100b.

[0045] The arithmetic unit 530 calculates the offset of the first correction body 310A, 310B and the second correction body 320A, 320B based on the height information of the first correction body 310A, 310B and the second correction body 320A, 320B.

[0046] Next, refer to Figure 3 This describes the structure of the first corrector 310A, 310B and the second corrector 320A, 320B.

[0047] like Figure 3 As shown, a base layer 250 is disposed on the stage 200. On the base layer 250, a first corrector 310A shaped by the first shaping head 100a and a second corrector 320A shaped by the second shaping head 100b are disposed on the -X direction side.

[0048] On the other hand, on the base layer 250, a first correction body 310B shaped by the first shaping head 100a and a second correction body 320B shaped by the second shaping head 100b are arranged on the +X direction side.

[0049] The first corrector 310A has multiple shaping lines 310A1 arranged at a first interval W1 in a first direction. The second corrector 320A has multiple shaping lines 320A1 arranged at a second interval W2 that is wider than the first interval W1 in a first direction. The shaping lines 310A1 and 320A1 are, for example, designed with emphasis on a single-stroke drawing method.

[0050] The first corrector 310B has multiple shaping lines 310B1 arranged at a first interval W3 in the direction intersecting the first direction. The second corrector 320B has multiple shaping lines 320B1 arranged at a second interval W4 that is wider than the first interval W3 in the direction intersecting the first direction. The shaping lines 310B1 and 320B1 are, for example, designed with emphasis on a single-stroke drawing method.

[0051] The first corrector bodies 310A and 310B have, for example, a square outer contour shape of approximately 50mm × 50mm. The width of the molding lines 310A1 and 310B1 is, for example, 0.4mm. The spacing between adjacent molding lines 310A1 and 310B1 is, for example, 0.6mm. It should be noted that the line width of the molding lines 310A1 and 310B1 is preferably greater than the diameter of the nozzle 110 and less than the spacing of the molding paths.

[0052] The second corrector bodies 320A and 320B have, for example, a rectangular outer contour shape of approximately 50mm × 39mm. The width of the shaping lines 320A1 and 320B1 is, for example, 0.5mm. The spacing between adjacent shaping lines 320A1 and 320B1 is, for example, 1.45mm.

[0053] Furthermore, in the direction intersecting the first direction, the distance W5 between the first corrector 310A and the second corrector 320A is preferably wider than the backlash interval in the moving mechanism 400. By setting it this way, the distance W5 between the first corrector 310A and the second corrector 320A is increased compared to the backlash interval, thus suppressing overlap between the first corrector 310A and the second corrector 320A. Therefore, for example, it is possible to suppress the situation where the nozzle 110 shaping the second corrector 320A comes into contact with the already shaped first corrector 310A, resulting in contamination of the nozzle 110 and a decrease in shaping accuracy.

[0054] Furthermore, a cleaning molding line 310C1 formed during the cleaning process of the first material is disposed between the first corrector 310A and the first corrector 310B. A cleaning molding line 320C1 formed during the cleaning process of the second material is disposed between the second corrector 320A and the second corrector 320B.

[0055] In this way, before shaping the first correction bodies 310A and 310B using the first shaping head 100a, the line width of the shaping lines 310A1 and 310B1 of the first correction bodies 310A and 310B can be stabilized by cleaning the stage 200, or in other words, the base layer 250.

[0056] On the other hand, before shaping the second correction bodies 320A and 320B using the second shaping head 100b, the line width of the shaping lines 320A1 and 320B1 of the second correction bodies 320A and 320B can be stabilized by performing a cleaning process on the stage 200, or in other words, on the base layer 250.

[0057] Next, refer to Figure 4 as well as Figure 5 This describes a method for determining the positional offset of the first shaping head 100a and the second shaping head 100b based on the first corrector 310A and the second corrector 320A.

[0058] like Figure 4 As shown, the end 310a of the shaping line 310A1 of the first corrector 310A is cropped by the image processing unit 520 and separated from the adjacent shaping line 310A1. Similarly, the end 320A of the shaping line 320A1 of the second corrector 320A is cropped by the image processing unit 520 and separated from the adjacent shaping line 320A1.

[0059] That is, the end 310a of the shaping line 310A1 of the first corrector 310a can be brought close to the end 320a of the shaping line 320A1 of the second corrector 320A, and can be clearly displayed. Therefore, the positional offset can be easily confirmed.

[0060] Furthermore, it is preferable to use a first shaping head 100a to shape the scale information 330a corresponding to the shaping line 310A1 of the first correction body 310A. For example, in Figure 4 In the middle, as the scale information 330a, the 0, 10, and 20 are shaped.

[0061] On the other hand, it is preferable to use a second shaping head 100b to shape the scale information 330b corresponding to the shaping line 320A1 of the second correction body 320A. For example, in Figure 4 In the middle, as the scale information 330b, the shapes of 0, 2, and 4 are created.

[0062] In this way, by shaping the scale information 330a, 330b, or in other words, the numbers, the offset can be made easier to understand, thus improving visual recognizability.

[0063] exist Figure 5 In China, according to Figure 4 The first corrector 310A and the second corrector 320A shown illustrate, in a readily understandable manner, the method for determining the positional offset of the first shaping head 100a and the second shaping head 100b. That is, Figure 5 The measurement method is similar to that of a vernier caliper. The value at this time can be read, for example, as 13.4.

[0064] That is, the first calibration body 310A shaped by the first styling head 100a becomes the main scale, and the second calibration body 320A shaped by the second styling head 100b becomes the vernier. If the value of the position offset is 0, then the positions of the styling heads 100a and 100b are consistent.

[0065] Next, refer to Figure 6 as well as Figure 7 This explains the alignment method between the first styling head 100a and the second styling head 100b.

[0066] First, the user selects options in the order of menu, maintenance, and head calibration on the input screen of the 3D modeling device 1000. When a signal related to performing head calibration is received, the control unit 500 reads the modeling data for head calibration from the storage unit 510.

[0067] Next, based on the read-out modeling data, the control unit 500 causes the first modeling head 100a to perform modeling of the first correctors 310A and 310B on the base layer 250 of the stage 200 (see reference). Figure 3 Furthermore, the control unit 500 causes the second modeling head 100b to perform modeling of the second correctors 320A and 320B on the base layer 250 of the stage 200.

[0068] Next, the control unit 500 causes the camera 700 to capture images of the first correction bodies 310A and 310B and the second correction bodies 320A and 320B, and causes the storage unit 510 to store the captured images of the first correction bodies 310A2 and 310B2 and the second correction bodies 320A2 and 320B2.

[0069] In this way, since the images of the first correction bodies 310A, 310B and the second correction bodies 320A, 320B are stored in the storage unit 510, the offset can be corrected even after a period of time has passed since the shooting.

[0070] Next, the control unit 500 instructs the image processing unit 520 to read out the stored first correction images 310A2 and 310B2 and the second correction images 320A2 and 320B2, and executes the end 310a of the first correction images 310A and 310B (refer to...). Figure 4 The end 320a of the second correction body 320A and 320B is trimmed.

[0071] Next, the control unit 500 displays the cropped first corrected body image 310A2 and the cropped second corrected body image 320A2 side by side on the display unit 600. That is, the image shows the offset of the first styling head 100a and the second styling head 100b in the X direction.

[0072] Additionally, the control unit 500 displays, side-by-side, the cropped first corrected body image 310B2 and the cropped second corrected body image 320B2 on the display unit 600. That is, the image shows the offset of the first styling head 100a and the second styling head 100b in the Y direction.

[0073] Because of this display, even when the first corrector bodies 310A and 310B or the second corrector bodies 320A and 320B are shaped using a single stroke, the necessary shaping lines 310A1, 310B1, 320A1, and 320B1 can be clearly displayed by trimming the ends 310a and 320a. Therefore, the offset between the first corrector bodies 310A and 310B and the second corrector bodies 320A and 320B can be easily calculated.

[0074] like Figure 6 As shown, the offset of the first styling head 100a and the second styling head 100b in the X direction is -0.1mm. On the other hand, the offset in the Y direction is 0.0mm.

[0075] Specifically, in the X or Y direction, find the lines 310A1 and 310B1 of the first correctors 310A and 310B that are consistent with the lines 320A1 and 320B1 of the second correctors 320A and 320B. Then, calculate the offset based on the number of roots starting from the reference point, i.e., 0.

[0076] That is, the correction of the styling heads 100a and 100b is completed by correcting the second styling head 100b by +0.1mm in the X direction and 0.0mm in the Y direction.

[0077] It should be noted that the preferred display unit 600 displays scale information 601a and 602a corresponding to the shaping lines 310A1 and 310B1 of the first correction bodies 310A and 310B, and scale information 601b and 602b corresponding to the shaping lines 320A1 and 320B1 of the second correction bodies 320A and 320B. Because numbers are displayed in this way, the offset can be easily understood, thus improving visual recognizability.

[0078] In this way, since the image is displayed on the display unit 600, the offset can be calculated from the display unit 600 without directly checking the first correction bodies 310A, 310B and the second correction bodies 320A, 320B. Therefore, for example, the offset can be corrected without changing the environment such as the modeling temperature in the modeling space of the three-dimensional modeling device 1000. As a result, productivity loss can be suppressed.

[0079] Next, as Figure 7 As shown, the control unit 500 causes the display unit 600 to display a calibration screen that allows input of calibration values ​​obtained from the first calibration bodies 310A, 310B and the second calibration bodies 320A, 320B.

[0080] The user inputs the correction value into the input box for the new correction value based on the offset in the X and Y directions. Specifically, since the offset in the X direction is -0.1mm, +0.1mm is input. On the other hand, since there is no offset in the Y direction, 0.0mm is input. After inputting the value, the user presses the update button to get the latest correction value. It should be noted that the correction value is stored in the storage unit 510.

[0081] As described above, the three-dimensional modeling apparatus 1000 of this embodiment includes: a stage 200; a first modeling head 100a having a first nozzle 110a for supplying a first material to the stage 200; a second modeling head 100b having a second nozzle 110b for supplying a second material different from the first material to the stage 200; a moving mechanism 400 for moving at least one of the first modeling head 100a and the second modeling head 100b relative to the stage 200; and a control unit 500 for controlling the first modeling head 100a, the second modeling head 100b, and the moving mechanism 400. Mechanism 400 and control unit 500 cause the first shaping head 100a to perform shaping of the first corrector bodies 310A and 310B on the stage 200, and cause the second shaping head 100b to perform shaping of the second corrector bodies 320A and 320B on the stage 200. The first corrector body 310A has multiple shaping lines 310A1 arranged at a first interval W1 in a first direction on the stage 200, and the second corrector body 320A has multiple shaping lines 320A1 arranged at a second interval W2 that is wider than the first interval W1 in the first direction on the stage 200.

[0082] According to this structure, since the first shaping head 100a shapes the first corrector bodies 310A and 310B, and the second shaping head 100b shapes the second corrector bodies 320A and 320B, by comparing the first corrector bodies 310A and 310B and the second corrector bodies 320A and 320B, the positional offset of the shaping heads 100a and 100b in the first direction can be identified based on the offset of their respective shaping lines 310A1, 310B1, 320A1, and 320B1. Therefore, by correcting the position of the shaping heads 100a and 100b based on the positional offset, it is possible to suppress the reduction in dimensional accuracy or strength of the shaped body.

[0083] Furthermore, in the three-dimensional modeling apparatus 1000 of this embodiment, it is preferable that the distance W5 between the first corrector bodies 310A, 310B and the second corrector bodies 320A, 320B in the direction intersecting the first direction is wider than the tooth gap interval in the moving mechanism 400. According to this structure, since the distance between the first corrector bodies 310A, 310B and the second corrector bodies 320A, 320B is wider than the tooth gap interval, overlapping of the first corrector bodies 310A, 310B and the second corrector bodies 320A, 320B can be suppressed. Therefore, it is possible to suppress the adhesion of molten material to the nozzle 110 during modeling, thus preventing a decrease in modeling accuracy.

[0084] Furthermore, in this embodiment, the three-dimensional modeling apparatus 1000 preferably has a base layer 250 disposed between the first correctors 310A, 310B and the second correctors 320A, 320B and the stage 200. According to this structure, since the base layer 250 is disposed, by modeling the first correctors 310A, 310B and the second correctors 320A, 320B on the base layer 250, the base layer 250 having the first correctors 310A, 310B and the second correctors 320A, 320B can be removed from the stage 200 for verification. In addition, since the correctors 310 and 320 are modeled on the base layer 250, for example, the fit between the base layer 250 and the correctors 310 and 320 can be improved compared to the case where the correctors 310 and 320 are tightly fitted onto the stage 200.

[0085] Furthermore, in the three-dimensional modeling apparatus 1000 of this embodiment, the base layer 250 is preferably modeled using a first modeling head 100a or a second modeling head 100b. According to this structure, since the base layer 250 is modeled using the first modeling head 100a or the second modeling head 100b, it is easy to form, for example, without the need to prepare new boards or sheets.

[0086] Furthermore, in the three-dimensional modeling apparatus 1000 of this embodiment, the control unit 500 preferably uses a first modeling head 100a or a second modeling head 100b to model the scale information 330a corresponding to the modeling lines 310A1 and 310B1 of the first correction bodies 310A and 310B, and uses the first modeling head 100a or the second modeling head 100b to model the scale information 330b corresponding to the modeling lines 320A1 and 320B1 of the second correction bodies 320A and 320B. According to this structure, since the scale information 330a and 330b, in other words, numbers, are modeled, the offset can be made easier to understand, thus improving visual recognizability.

[0087] Furthermore, the three-dimensional modeling device 1000 of this embodiment preferably includes: a camera 700 capable of capturing images of at least one of the first correction bodies 310A, 310B and the second correction bodies 320A, 320B; and a storage unit 510 for storing the images captured by the camera 700. According to this structure, since the captured images of the first correction bodies 310A, 310B and the second correction bodies 320A, 320B are stored, the offset can be corrected even after a period of time following the capture.

[0088] Furthermore, the 3D modeling apparatus 1000 of this embodiment preferably includes a display unit 600, which displays images of the first correction bodies 310A and 310B and the second correction bodies 320A and 320B captured by the camera 700; and a correction screen that allows input of correction values ​​obtained from the first correction bodies 310A and 310B and the second correction bodies 320A and 320B. With this structure, since the images are displayed on the display unit 600, the offset can be calculated from the display unit 600 without directly checking the first correction bodies 310A and 310B and the second correction bodies 320A and 320B. Therefore, for example, the offset can be corrected without changing the environment such as the modeling temperature in the modeling space of the 3D modeling apparatus 1000. This helps to suppress productivity reduction.

[0089] Furthermore, the three-dimensional modeling device 1000 of this embodiment preferably includes an image processing unit 520, a storage unit 510 storing first correction body images 310A2 and 310B2 captured by the camera 700 of the first correction bodies 310A and 310B, and second correction body images 320A2 and 320B2 captured by the camera 700 of the second correction bodies 320A and 320B. The image processing unit 520 crops the ends 310a of the stored first correction body images 310A2 and 310B2 and the ends 320a of the second correction body images 320A2 and 320B2. The display unit 600 displays the cropped first correction body images 310A2 and 310B2 and the cropped second correction body images 320A2 and 320B2 side by side. According to this structure, for example, even when the first corrector body 310A, 310B or the second corrector body 320A, 320B is shaped in a single stroke, the necessary shaping lines 310A1, 310B1, 320A1, 320B1 can be clearly displayed by trimming the ends 310a, 320a. Therefore, the offset between the first corrector body 310A, 310B and the second corrector body 320A, 320B can be easily calculated.

[0090] Furthermore, in the three-dimensional modeling device 1000 of this embodiment, the display unit 600 preferably displays scale information 601a, 602a corresponding to the modeling lines 310A1, 310B1 of the first correction bodies 310A, 310B, and scale information 601b, 602b corresponding to the modeling lines 320A1, 320B1 of the second correction bodies 320A, 320B. According to this structure, since the scale information 601a, 602a, 601b, 602b is displayed—in other words, numbers are displayed—the offset can be easily understood, thus improving visual recognizability.

[0091] Furthermore, in the three-dimensional modeling apparatus 1000 of this embodiment, it is preferable that the control unit 500 performs a cleaning process on the stage 200 or maintenance position before modeling the first correction bodies 310A and 310B using the first modeling head 100a, and performs a cleaning process on the stage 200 or maintenance position before modeling the second correction bodies 320A and 320B using the second modeling head 100b. According to this structure, by performing the cleaning process before modeling the correction bodies 310 and 320 used to calculate the offset, the linewidths of the first correction bodies 310A and 310B and the second correction bodies 320A and 320B can be stabilized, and the offset can be accurately calculated.

[0092] The following describes variations of the above-described embodiments.

[0093] As described above, it is not limited to displaying the cropped first corrected image 310A2 and the second corrected image 320A2 side by side; for example, it can also be displayed as follows: Figure 8 As shown. Figure 8 Yes Figure 3 The image taken from section A. That is, the uncropped image 315.

[0094] First, the captured image 315, the reference bar setting unit 316 with reference bar 316a, and the measurement bar setting unit 317 with measurement bar 317a for measuring position offset are displayed on the display unit 600. Next, the arrow button is operated to position the reference bar 316a at the reference position. Here, the fifth bar from the left is used as the reference position. Then, the arrow button is operated to position the measurement bar 317a at the position where the shaping line 310A1 and the shaping line 320A1 coincide. Here, when the update button is pressed, the calculation unit 530 calculates the correction value based on the image and stores it in the storage unit 510.

[0095] Furthermore, as mentioned above, it is not limited to manually calculating the offset, such as... Figure 9 As shown, the offset can also be calculated automatically. Figure 9 A method for calculating correction values ​​using a distance sensor as the sensor is shown.

[0096] First, by moving the measurement area of ​​the distance sensor from the -X direction to the +X direction, the height information 310A3 of the first calibration body 310A and the height information 320A3 of the second calibration body 320A are measured. It should be noted that the measurements can be performed simultaneously or separately. In the case of separate measurements, a reference point for the X-direction measurement is required.

[0097] Here, the reference point of the first corrector 310A is taken as, for example, the fourth position from the -X direction side. Next, the point of agreement between the height information 310A3 of the first corrector 310A and the height information 320A3 of the second corrector 320A is determined.

[0098] As a method of calculation, for example, based on the distance L1 between the reference point and the alignment point, the interval L2, and the width L3 of the shaping line 320A1, the number of lines in the second correction body 320A is calculated. The number of lines in the second correction body 320A is calculated from the integer value of the correction value. The correction value is calculated using the following formula: Correction value = (distance L1 between the reference point and the alignment point) / (interval L2 + width L3 of the shaping line 320A1).

[0099] In this configuration, a distance sensor for detecting the height of the direction intersecting the first direction and a calculation unit 530 are preferably provided. The calculation unit 530 calculates the offset of the first correction body 310A and the second correction body 320A based on the height information 310A3 of the first correction body 310A and the height information 320A3 of the second correction body 320A obtained from the distance sensor. Therefore, since the correction value is calculated based on the height information 310A3 and 320A3 of the first correction body 310A and the second correction body 320A, the user can automatically calculate the offset without visually determining it.

[0100] In addition, it is not limited to Figure 3 The areas of the first corrector 310A and the second corrector 320A shown are, for example, as... Figure 10 As shown, the area of ​​the second corrector 320A can also be increased compared to the area of ​​the first corrector 310A.

[0101] In other words, the proportion occupied by the first corrector 310A on the stage 200 is preferably smaller than the proportion occupied by the second corrector 320A on the stage 200. Consequently, the first interval W1 of the shaping lines 310A1 of the first corrector 310A is narrower than the second interval W2 of the shaping lines 320A1 of the second corrector 320A. Therefore, when both correctors 310a and 320a are shaped with the same area, the amount of material used in the first corrector 310A is greater. Therefore, by reducing the proportion occupied by the first corrector 310A, the amount of material used can be reduced.

[0102] Additionally, as mentioned above, the widths of the molding lines 310A1, 310A2, 320A1, and 320A2 are not specifically specified, but can be... Figure 11 Set it as shown. Figure 11 As shown, the scale format can be selected according to the reading accuracy to be calibrated.

[0103] As a specific setting step, firstly, the spacing of the width of the shaping lines 320A1 of the second corrector 320A is determined. Next, by dividing the spacing of the 10 shaping lines 320A1 of the second corrector 320A into 10 equal parts, the spacing of the width of the shaping lines 310A1 of the first corrector 310A is determined. Then, it is determined whether the spacing of the width of the shaping lines 310A1 of the first corrector 310A is greater than the minimum width of the shaping lines 310A1; if it is smaller, the process returns to the initial setting. This is because if the spacing of the width of the shaping lines 310A1 of the first corrector 310A is too narrow, adjacent shaping lines 310A1 will overlap and cannot form gaps.

Claims

1. A three-dimensional modeling device, characterized in that, The three-dimensional modeling device includes: Stage; The first shaping head has a first nozzle for supplying a first material to the stage; The second shaping head has a second nozzle that supplies a second material, different from the first material, to the stage; A moving mechanism that causes at least one of the first styling head and the second styling head to move relative to the stage; as well as The control unit controls the first styling head, the second styling head, and the moving mechanism. The control unit causes the first shaping head to perform shaping of a first corrector body on the platform, and causes the second shaping head to perform shaping of a second corrector body on the platform. The first corrector has multiple shaping lines arranged at first intervals in a first direction on the stage. The second corrector has multiple shaping lines arranged at second intervals wider than the first interval in the first direction on the stage. The control unit identifies the positional offset of the first styling head and the second styling head based on the offset of the styling line of the first corrector and the styling line of the second corrector, and corrects the position of the first styling head and the second styling head based on the positional offset.

2. The three-dimensional modeling device according to claim 1, wherein, In a direction intersecting the first direction, the distance between the first corrector and the second corrector is wider than the tooth gap interval in the moving mechanism.

3. The three-dimensional modeling device according to claim 1, wherein, A base layer is disposed between the first and second correctors and the stage.

4. The three-dimensional modeling device according to claim 3, wherein, The base layer is styled using either the first styling head or the second styling head.

5. The three-dimensional modeling device according to claim 1, wherein, The control unit uses the first shaping head or the second shaping head to shape the scale information corresponding to the shaping line of the first correction body. The control unit uses the first shaping head or the second shaping head to shape the scale information corresponding to the shaping line of the second correction body.

6. The three-dimensional modeling device according to claim 1, wherein, The three-dimensional modeling device includes: The camera mechanism is capable of capturing images of at least one of the first calibration body and the second calibration body; and The storage unit stores images captured by the camera mechanism.

7. The three-dimensional modeling device according to claim 6, wherein, The three-dimensional modeling device includes a display unit that displays the following content: Images of the first and second correction bodies captured by the camera mechanism; and A calibration screen that can input calibration values ​​obtained from the first calibration body and the second calibration body.

8. The three-dimensional modeling device according to claim 7, wherein, The three-dimensional modeling device includes an image processing unit. The storage unit stores a first image of the correction body captured by the camera mechanism on the first correction body and a second image of the correction body captured by the camera mechanism on the second correction body. The image processing unit crops the ends of the stored first corrected image and the ends of the second corrected image. The display unit displays the cropped first corrected image and the cropped second corrected image side by side.

9. The three-dimensional modeling device according to claim 7, wherein, The display unit displays scale information corresponding to the shape line of the first corrector and scale information corresponding to the shape line of the second corrector.

10. The three-dimensional modeling device according to claim 1, wherein, The three-dimensional modeling device includes: The sensor detects the height in a direction intersecting the first direction; and Arithmetic unit, The calculation unit calculates the offset of the first and second correctors based on the height information of the first corrector obtained from the sensor and the height information of the second corrector obtained from the sensor.

11. The three-dimensional modeling device according to claim 1, wherein, The proportion of the first calibration body on the stage is smaller than the proportion of the second calibration body on the stage.

12. The three-dimensional modeling device according to claim 1, wherein, Before using the first shaping head to shape the first correction body, the control unit removes the first material from the stage or maintenance position. Before using the second shaping head to shape the second correction body, the control unit cleans the second material on the stage or at the maintenance position.

Images