Three-dimensional modeling device

Abstract

Provided is a three-dimensional modeling apparatus in which an operation process of calculating a distance between a top end portion and a build surface in a control portion is facilitated. The three-dimensional modeling apparatus includes a modeling portion having a nozzle that ejects a modeling material from a nozzle opening formed at a top end portion; a stage having a build surface on which the modeling material is built; a moving mechanism that changes a relative position between the nozzle and the stage; a measuring portion that measures the distance between the build surface and the top end portion; and a control portion that controls the moving mechanism. The measuring portion includes a first contact-type detection portion that moves in conjunction with the nozzle and a second contact-type detection portion that moves in conjunction with the stage. The first and second detection portions are configured such that, when the first and second detection portions come into contact with each other, one of the first and second detection portions detects the contact.

Description

Technical Field

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

[0002] A three-dimensional modeling device is known that shapes a three-dimensional object by spraying out a plasticized material and layering and hardening it.

[0003] For example, Patent Document 1 describes a styling device that includes a reference distance detection unit integrally supported with a mounting platform and detecting a distance L3 from the styling reference portion to the styling part, and a mounting surface distance acquisition unit that acquires a distance L5 between the reference distance detection unit and the mounting surface. This allows for the detection of the styling utilization distance L between the mounting surface and the styling reference portion on the styling part based on the distance (L3-L5). Patent Document 1 also states that a non-contact distance detection unit is preferably used as both the reference distance detection unit and the mounting surface distance acquisition unit.

[0004] However, the inventors believe that in order to perform measurements at a lower cost and with higher accuracy, it is preferable to use a contact-type distance detection unit compared to a non-contact type. Furthermore, the inventors have discovered that when multiple distance detection units are used to detect the shape using distance L, malfunctions can occur if the distance detection units come into contact with each other.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2017-217792 Summary of the Invention

[0006] One aspect of the three-dimensional modeling device involved in this invention includes:

[0007] The shaping section has a nozzle that ejects shaping material from a nozzle opening formed at the top end;

[0008] A platform having a stacking surface for the material to be stacked;

[0009] A moving mechanism that changes the relative position between the nozzle and the stage;

[0010] The measuring unit measures the distance between the stacked surface and the top end.

[0011] The control unit controls the moving mechanism.

[0012] The measuring unit has:

[0013] A first contact-type detection unit moves in conjunction with the nozzle;

[0014] The second contact-type detection unit moves in conjunction with the stage.

[0015] The first detection unit and the second detection unit are configured such that when the first detection unit and the second detection unit come into contact, one of the first detection unit and the second detection unit will detect that contact has occurred. Attached Figure Description

[0016] Figure 1 A perspective view illustrating the three-dimensional modeling device involved in this embodiment.

[0017] Figure 2 This is a cross-sectional view illustrating the three-dimensional modeling device according to this embodiment.

[0018] Figure 3 A perspective view of the flat spiral component of the three-dimensional modeling device according to this embodiment is shown schematically.

[0019] Figure 4 The top view of the barrel of the three-dimensional modeling device according to this embodiment is shown schematically.

[0020] Figure 5 This is a cross-sectional view illustrating the three-dimensional modeling device according to this embodiment.

[0021] Figure 6 This is a flowchart illustrating the processing of the control unit of the three-dimensional modeling device according to this embodiment.

[0022] Figure 7 This is a cross-sectional view used to explain the modeling layer formation process of the three-dimensional modeling apparatus according to this embodiment. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Furthermore, the embodiments described below are not intended to unduly limit the scope of the present invention as described in the technical solutions. Additionally, not all structures described below are necessarily essential structural elements of the present invention.

[0024] 1. Three-dimensional modeling device

[0025] 1.1. Overall Structure

[0026] First, the three-dimensional modeling device involved in this embodiment will be described with reference to the accompanying drawings. Figure 1 A perspective view of the three-dimensional modeling device 100 according to this embodiment is shown schematically.

[0027] Figure 2 To illustrate the three-dimensional modeling device 100 according to this embodiment, Figure 1 Sectional view along line II-II. Additionally, in Figure 1 as well as Figure 2 In the diagram, the X-axis, Y-axis, and Z-axis are shown as three mutually orthogonal axes. The X-axis and Y-axis directions are, for example, horizontal. The Z-axis direction is, for example, vertical.

[0028] like Figure 1 as well as Figure 2 As shown, the three-dimensional modeling device 100 includes, for example, a modeling unit 10, a stage 20, a moving mechanism 30, a support member 40, an upper heater 50, a measuring unit 60, a first replacement detection unit 70, a second replacement detection unit 72, a third replacement detection unit 74, and a control unit 80. Furthermore, for ease of understanding, in Figure 1 The illustrations of replacing detection units 70, 72, and 74 are omitted.

[0029] While spraying the plasticized modeling material from the modeling section 10 toward the stage 20, the three-dimensional modeling device 100 drives the moving mechanism 30 to change the relative position between the modeling section 10 and the stage 20. As a result, the three-dimensional modeling device 100 models a three-dimensional object of the desired shape on the stage 20.

[0030] As the shaping section 10, the three-dimensional shaping device 100 includes a first shaping section 10a and a second shaping section 10b. In the illustrated example, the first shaping section 10a and the second shaping section 10b are arranged in the X-axis direction. The structures of the first shaping section 10a and the second shaping section 10b are, for example, identical. The first shaping section 10a and the second shaping section 10b can spray shaping material constituting the three-dimensional object together, or one of them can spray shaping material while the other sprays support material supporting the three-dimensional object. Alternatively, although not illustrated, it is possible to omit either the first shaping section 10a or the second shaping section 10b.

[0031] The shaping section 10 may include, for example, a material supply section 110, a plasticizing section 120, and a nozzle 160.

[0032] In the material supply section 110, granular or powdered materials are fed in. The material supply section 110 supplies the materials, which become raw materials, to the plasticizing section 120. The material supply section 110 is, for example, composed of a hopper. The material supplied through the material supply section 110 is, for example, acrylonitrile-butadiene-styrene (ABS) resin.

[0033] like Figure 2 As shown, the material supply unit 110 and the plasticizing unit 120 are connected by a supply channel 112 located below the material supply unit 110. The material fed into the material supply unit 110 is supplied to the plasticizing unit 120 via the supply channel 112.

[0034] The plasticizing section 120 includes, for example, a spiral housing 122, a drive motor 124, a flat spiral 130, a barrel 140, and a barrel heater 150. The plasticizing section 120 plasticizes the solid material supplied from the material supply section 110 to generate a fluid, paste-like molding material, which is then supplied to the nozzle 160.

[0035] Furthermore, plasticization is a concept that includes melting, referring to the change of a material from a solid state to a fluid state. Specifically, for materials that will undergo a glass transition, plasticization means raising the material's temperature above the glass transition temperature. For materials that will not undergo a glass transition, plasticization means raising the material's temperature above its melting point.

[0036] The spiral housing 122 is a frame for housing the flat spiral component 130. A cylinder 140 is provided on the lower surface of the spiral housing 122. The flat spiral component 130 is housed in the space enclosed by the spiral housing 122 and the cylinder 140.

[0037] A drive motor 124 is disposed on the upper surface of the spiral housing 122. The drive motor 124 is, for example, a servo motor. The shaft 126 of the drive motor 124 is connected to the upper surface 131 of the flat spiral 130. The drive motor 124 is controlled by the control unit 80. Alternatively, although not shown, the shaft 126 of the drive motor 124 and the upper surface 131 of the flat spiral 130 may also be connected together via a reducer.

[0038] The flat helical member 130 has a generally cylindrical shape, smaller in the direction of the rotation axis R than in the direction orthogonal to the rotation axis R. In the illustrated example, the rotation axis R is parallel to the Z-axis. The flat helical member 130 rotates about the rotation axis R using the torque generated by the drive motor 124.

[0039] The flat helical member 130 has an upper surface 131, a groove forming surface 132 opposite to the upper surface 131, and a side surface 133 connecting the upper surface 131 and the groove forming surface 132. A first groove 134 is formed on the groove forming surface 132. The side surface 133 is, for example, perpendicular to the groove forming surface 132. Figure 3 A perspective view is provided to schematically represent the flat helical component 130. Additionally, for ease of understanding, [the following is also shown]. Figure 3 The text shows the relationship with... Figure 2 The state shown is such that the vertical positional relationship is reversed.

[0040] like Figure 3As shown, a first groove 134 is formed on the groove forming surface 132 of the flat spiral member 130. The first groove 134, for example, has a central portion 135, a connecting portion 136, and a material introduction portion 137. The central portion 135 faces a communicating hole 146 formed on the barrel 140. The central portion 135 communicates with the communicating hole 146. The connecting portion 136 connects the central portion 135 and the material introduction portion 137. In the illustrated example, the connecting portion 136 is arranged in a vortex shape from the central portion 135 toward the outer periphery of the groove forming surface 132. The material introduction portion 137 is provided at the outer periphery of the groove forming surface 132. That is, the material introduction portion 137 is provided on the side surface 133 of the flat spiral member 130. The material supplied from the material supply unit 110 is introduced into the first groove 134 through the material inlet 137, and then conveyed through the connecting part 136 and the central part 135 to the communicating hole 146 formed on the barrel 140. For example, two first grooves 134 are provided.

[0041] Furthermore, the number of first grooves 134 is not particularly limited. Although not shown, there may be three first grooves 134, or there may be only one. In addition, although not shown, the three-dimensional modeling device 100 may also have a coaxial screw instead of the flat helical member 130.

[0042] like Figure 2 As shown, the barrel 140 is positioned below the flat helical member 130. The barrel 140 has a counterface 142 opposite to the groove forming surface 132 of the flat helical member 130. At the center of the counterface 142, a connecting hole 146 communicating with the first groove 134 is formed. Here, Figure 4 A top view of the barrel 140 is shown schematically.

[0043] like Figure 4 As shown, a second groove 144 and a connecting hole 146 are formed on the opposing surface 142 of the barrel 140. Multiple second grooves 144 are formed. Although six second grooves 144 are formed in the illustrated example, the number of second grooves 144 is not particularly limited. When viewed from the Z-axis direction, the multiple second grooves 144 are formed around the connecting hole 146. One end of each second groove 144 connects to the connecting hole 146 and extends in a spiral shape from the connecting hole 146 toward the outer periphery 148 of the barrel 140. The second groove 144 functions to guide the plasticized molding material toward the connecting hole 146.

[0044] Furthermore, the shape of the second groove 144 is not particularly limited, and it may, for example, be a straight line. Additionally, the second groove 144 may not have one end connected to the connecting hole 146. Moreover, the second groove 144 may not be formed on the opposing surface 142. However, if efficient guidance of the plasticized material into the connecting hole 146 is desired, it is preferable that the second groove 144 be formed on the opposing surface 142.

[0045] like Figure 2 As shown, a barrel heater 150 is provided on the barrel 140. The barrel heater 150 heats the material supplied between the flat auger 130 and the barrel 140. The output of the barrel heater 150 is controlled by the control unit 80. The plasticizing unit 120 generates plasticized molding material by heating the material while it is being conveyed toward the connecting hole 146 through the flat auger 130, the barrel 140, and the barrel heater 150, and then allows the generated molding material to flow out from the connecting hole 146. Furthermore, when viewed from the Z-axis direction, the barrel heater 150 can also be annular. Alternatively, the barrel heater 150 may not be provided; in this case, a heater may be provided at a different location than the barrel 140.

[0046] A nozzle 160 is disposed below the barrel 140. A nozzle channel 162 is formed in the nozzle 160. The nozzle channel 162 communicates with a connecting hole 146. Molding material is supplied through the connecting hole 146 into the nozzle channel 162. The nozzle channel 162 has a nozzle opening 164. The nozzle opening 164 is formed at the tip 166 of the nozzle 160. In the illustrated example, the tip 166 is the end of the nozzle 160 in the -Z axis direction. The nozzle 160 ejects molding material from the nozzle opening 164 toward the stage 20.

[0047] like Figure 1 as well as Figure 2 As shown, the stage 20 is positioned below the nozzle 160. In the illustrated example, the stage 20 is rectangular in shape. The stage 20 has a build-up surface 22 for depositing modeling material. The build-up surface 22 is the area of ​​the upper surface of the stage 20. In the illustrated example, the perpendicular P of the build-up surface 22 is parallel to the Z-axis.

[0048] The stage 20 can be made of a metal such as aluminum. The stage 20 may also be constructed from a metal plate and a thin, tightly fitting sheet disposed on the metal plate. In this case, the stacked surface 22 is formed by the tightly fitting sheet. The tightly fitting sheet improves the adhesion between the stage 20 and the molding material ejected from the molding section 10.

[0049] Although not shown in the diagram, the stage 20 can also be constructed from a grooved metal plate and a base layer that is provided to fill the grooves. In this case, the stacking surface 22 is formed by the base layer. The material of the base layer is, for example, the same as the styling material. The base layer can improve the adhesion between the stage 20 and the styling material sprayed from the styling section 10.

[0050] The moving mechanism 30 supports the stage 20. The moving mechanism 30 changes the relative position between the nozzle 160 and the stage 20. In the illustrated example, the moving mechanism 30 changes the relative position between the nozzle 160 and the stage 20 in the X-axis and Y-axis directions by moving the stage 20 in those directions. Furthermore, the moving mechanism 30 changes the relative position between the nozzle 160 and the stage 20 in the Z-axis direction by moving the shaping section 10 in that direction.

[0051] The moving mechanism 30 includes, for example, a first electric actuator 32, a second electric actuator 34, and a third electric actuator 36. The first electric actuator 32 moves the stage 20 in the X-axis direction. The second electric actuator 34 moves the stage 20 in the Y-axis direction. The third electric actuator 36 moves the shaping section 10 in the Z-axis direction. Alternatively, the moving mechanism 30 only needs to be able to change the relative position between the nozzle 160 and the stage 20. For example, it could be a structure that moves the stage 20 in the Z-axis direction and the shaping section 10 in both the X and Y-axis directions, or it could be a structure that moves either the stage 20 or the shaping section 10 in all three directions (X, Y, and Z).

[0052] The support member 40 is connected to the third electric actuator 36. The support member 40 supports the shaping section 10 and the upper heater 50. The moving mechanism 30 moves the support member 40 in the Z-axis direction by using the third electric actuator 36, thereby moving the shaping section 10 and the upper heater 50 in the Z-axis direction.

[0053] The upper heater 50 is, for example, plate-shaped. The upper heater 50 moves in conjunction with the nozzle 160. When viewed from the Z-axis, the upper heater 50 covers at least a portion of the stacked surface 22 when the nozzle opening 164 overlaps with the center of the stage 20. When viewed from the Z-axis, the upper heater 50 can cover either only a portion of the stacked surface 22 or the entire stacked surface 22 when the nozzle opening 164 overlaps with the center of the stage 20. The upper heater 50 heats the molding material stacked on the stacked surface 22.

[0054] like Figure 2 As shown, the upper heater 50 includes, for example, a support plate 52 and a heater component 54. The support plate 52 forms the upper surface of the upper heater 50. The support plate 52 is made of, for example, an insulating material. The heater component 54 forms the lower surface of the upper heater 50. The heater component 54 is made of, for example, a ceramic heater, a rubber heater, etc. The output of the heater component 54 is controlled by a control unit 80.

[0055] A through hole 56 is formed on the upper heater 50. The through hole 56 extends through the upper heater 50 in the Z-axis direction. During molding, the nozzle 160 is located in the through hole 56. In the illustrated example, two through holes 56 are formed, with the nozzle 160 of the first molding part 10a located in one through hole 56 and the nozzle 160 of the second molding part 10b located in the other through hole 56. The upper heater 50 is located above the position of the nozzle opening 164 during molding. Specifically, the upper heater 50 is located above the position of the nozzle opening 164 in the first to third contact processes and the molding layer formation process described later. The flat helix 130 and the barrel 140 are located above the upper heater 50, and the nozzle opening 164 and the stage 20 are located below the upper heater 50. In the illustrated example, "above" refers to the +Z-axis direction, and "below" refers to the -Z-axis direction.

[0056] A through hole 58 is formed on the upper heater 50. The through hole 58 penetrates the upper heater 50 in the Z-axis direction. When viewed from the Z-axis direction, the distance between the through hole 58 and the center of the upper heater 50 is greater than the distance between the through hole 56 and the center of the upper heater 50.

[0057] The measuring unit 60 measures the distance L between the stacking surface 22 of the stage 20 and the tip 166 of the nozzle 160. The measuring unit 60 includes, for example, a first detection unit 61a, a second detection unit 61b, a first moving part 65a, a second moving part 65b, a first heat-insulating member 66a, and a second heat-insulating member 66b. Furthermore, for ease of understanding, in Figure 1 The illustrations of the moving parts 65a and 65b are omitted.

[0058] The first detection unit 61a moves in conjunction with the nozzle 160. Figure 2 In the example shown, the first detection unit 61a is fixed to the support plate 52 of the upper heater 50. Figure 1As shown, when viewed from the Z-axis direction, the first detection unit 61a is positioned inwards from the outer edge 59 of the upper heater 50. When viewed from the Z-axis direction, the outer edge 59 is, for example, quadrilateral. The second detection unit 61b moves in conjunction with the stage 20. In the illustrated example, the second detection unit 61b is fixed to the moving mechanism 30.

[0059] The first detection unit 61a and the second detection unit 61b are contact-type detection units that output detection signals to the control unit 80 by contacting the target object. The first detection unit 61a and the second detection unit 61b, for example, have a substrate 62, a contact head 63, and a force application part 64.

[0060] The substrate 62 supports the contact head 63 via the force-applying portion 64. The substrate 62 is configured to include an integrated circuit (IC). The substrate 62 is configured to output a detection signal to the control unit 80.

[0061] The contact head 63 is the part that contacts the object. The surface material of the contact head 63 is, for example, ceramic. This improves the heat resistance of the contact head 63. The contact head 63 of the first detection unit 61a can contact the stacked surface 22 and the contact head 63 of the second detection unit 61b. The contact head 63 of the second detection unit 61b can contact the tip 166 of the nozzle 160 of the first shaping unit 10a and the tip 166 of the nozzle 160 of the second shaping unit 10b. Since the stage 20 and the nozzle 160 are at high temperatures, it is preferable to improve the heat resistance of the contact head 63.

[0062] The force-applying part 64 connects the substrate 62 to the contact head 63. The force-applying part 64 applies force to the contact head 63 towards the outside. "Applying force to the contact head 63 towards the outside" means applying force to the side of the contact head 63 opposite to the substrate 62. The force-applying part 64 of the first detection part 61a applies force to the contact head 63 towards the upper heater 50. In the illustrated example, the force-applying part 64 of the first detection part 61a applies force to the contact head 63 in the -Z-axis direction. The force-applying part 64 of the second detection part 61b applies force to the contact head 63 towards the upper heater 50. In the illustrated example, the force-applying part 64 of the first detection part 61a applies force to the contact head 63 in the +Z-axis direction. Here, the force-applying part 64 and the substrate 62 can also be housed in the same frame and used as a single component.

[0063] The force-applying part 64 is, for example, constituted by a spring. The force applied by the force-applying part 64 of the first detection part 61a is different from the force applied by the force-applying part 64 of the second detection part 61b. For example, by adjusting the spring constant of the force-applying part 64, the force applied by the force-applying part 64 can be adjusted. The force applied by the force-applying part 64 of the first detection part 61a is, for example, smaller than the force applied by the force-applying part 64 of the second detection part 61b.

[0064] The first detection unit 61a and the second detection unit 61b are configured such that when the first detection unit 61a and the second detection unit 61b come into contact, one of them will detect that contact has occurred. When the force applied by the force-applying part 64 of the first detection unit 61a is less than the force applied by the force-applying part 64 of the second detection unit 61b, in the 3D modeling apparatus 100, the first detection unit 61a will detect that contact has occurred when the first detection unit 61a comes into contact with the second detection unit 61b. That is, when the first detection unit 61a and the second detection unit 61b come into contact, a detection signal will be output from the first detection unit 61a to the control unit 80.

[0065] The first detection unit 61a and the second detection unit 61b can be either an A-contact type switch detection unit that detects contact by conducting current in the substrate 62 when the contact head 63 contacts the object and actuates the switch, or a B-contact type switch detection unit that detects contact by de-conducting current in the substrate 62. However, since the time from contact to outputting a detection signal to the control unit 80 is shorter for the B-contact type detection units 61a and 61b, the B-contact type is preferred. The substrate 62, the contact head 63, and the force application unit 64 constitute the switch. The detection units 61a and 61b are, for example, touch sensors.

[0066] The first moving part 65a moves the first detection part 61a to the measuring position and the standby position. The second moving part 65b moves the second detection part 61b to the measuring position and the standby position. Figure 5 A cross-sectional view is shown schematically to illustrate the three-dimensional modeling device 100. Figure 5 The image shows the state of the detection units 61a and 61b at the measurement position. Figure 2 The image shows the state of the detection units 61a and 61b in the standby position.

[0067] The first moving part 65a moves the first detection part 61a in the Z-axis direction, thereby moving the first detection part 61a towards the measurement position and the standby position. Figure 5As shown, at the measurement position, the tip of the contact head 63 of the first detection unit 61a protrudes from the first heat insulation member 66a and is located below the tip 166 of the nozzle 160. The contact head 63 contacts the object at the measurement position. On the other hand, as... Figure 2 As shown, in the standby position, the top of the contact head 63 of the first detection unit 61a is located above the upper heater 50 and is housed in the first heat insulation member 66a.

[0068] The second moving part 65b moves the second detection part 61b in the Z-axis direction, thereby moving the second detection part 61b towards the measurement position and the standby position. Figure 5 As shown, at the measurement position, the tip of the contact head 63 of the second detection unit 61b protrudes from the second heat insulation member 66b and is located above the accumulation surface 22. On the other hand, as Figure 2 As shown, in the standby position, the contact head 63 of the second detection unit 61b is located lower than the accumulation surface 22 and is housed in the second heat insulation member 66b. The moving parts 65a and 65b are configured to include an air cylinder. The moving parts 65a and 65b are controlled by the control unit 80.

[0069] like Figure 2 As shown, the first heat insulation component 66a covers the first detection unit 61a in the standby position. The first heat insulation component 66a has a box-shaped form. The first heat insulation component 66a houses the first detection unit 61a in the standby position. A through hole 67a is formed in the first heat insulation component 66a. The through hole 67a communicates with the through hole 58 formed in the upper heater 50. The tip of the contact head 63 of the first detection unit 61a passes through the through hole 58 and the through hole 67a, and is located below the tip portion 166 in the measurement position.

[0070] The second heat insulation component 66b covers the second detection unit 61b in the standby position. The second heat insulation component 66b has a box-shaped form. The second heat insulation component 66b houses the second detection unit 61b in the standby position. A through hole 67b is provided on the second heat insulation component 66b. The tip of the contact head 63 of the second detection unit 61b passes through the through hole 67b and is located above the accumulation surface 22 in the measurement position. The material of the heat insulation components 66a and 66b is not particularly limited as long as it has heat insulation properties.

[0071] The first replacement inspection unit 70 inspects at least one of the replacements of the shaping unit 10, the stage 20, and the nozzle 160. The shaping unit 10, the stage 20, and the nozzle 160 are configured to be detachable.

[0072] After detecting a replacement, the first replacement detection unit 70 outputs a measurement start signal to the control unit 80 to begin measuring the distance L between the stacked surface 22 and the top end 166. Alternatively, after detecting a replacement, the first replacement detection unit 70 outputs a replacement signal to the control unit 80. After receiving a replacement signal, the control unit 80 displays information (not shown) indicating that a replacement has been performed on a display unit (not shown). The user visually confirms this information and outputs a measurement start signal to the control unit 80 via an operation unit (not shown). This process is configured similarly in the second replacement detection unit 72 and the third replacement detection unit 74.

[0073] Furthermore, the display unit may be composed of, for example, an LCD (Liquid Crystal Display), an organic EL (Electroluminescence) display, an EPD (Electrophoretic Display), or a touch panel type display. The operation unit may be composed of, for example, a mouse, a keyboard, or a touch panel.

[0074] In the illustrated example, the first replacement detection unit 70 detects the replacement of the styling part 10. Two first replacement detection units 70 are provided. One first replacement detection unit 70 detects the replacement of the first styling part 10a. The other first replacement detection unit 70 detects the replacement of the second styling part 10b.

[0075] The second replacement detection unit 72 detects the replacement of the nozzle 160. In the illustrated example, two second replacement detection units 72 are provided. One second replacement detection unit 72 detects the replacement of the nozzle 160 of the first shaping unit 10a. The other second replacement detection unit 72 detects the replacement of the nozzle 160 of the second shaping unit 10b.

[0076] The third replacement detection unit 74 detects the replacement of the stage 20. The replacement detection units 70, 72, and 74 can be either non-contact detection units that do not contact the object being replaced, or contact detection units that switch the switch by contact with or without contact with the object being replaced. The location of the replacement detection units 70, 72, and 74 is not particularly limited as long as it allows for the detection of replacements.

[0077] The control unit 80 is configured, for example, as a computer having a processor, main storage device, and an input / output interface for implementing signals to and from the outside. The control unit 80 performs various functions, for example, by having the processor execute programs read from the main storage device. Specifically, the control unit 80 controls the shaping unit 10, the moving mechanism 30, the upper heater 50, and the measuring unit 60. Alternatively, the control unit 80 may not be configured as a computer, but rather as a combination of multiple circuits.

[0078] 1.2. Control Unit Processing

[0079] Figure 6 This is a flowchart illustrating the processing of the control unit 80.

[0080] First, when the control unit 80 receives the aforementioned measurement start signal, such as Figure 6 As shown, as step S1, a heater driving process is performed to drive the upper heater 50 and the barrel heater 150. By driving the upper heater 50 and the barrel heater 150, the contact process described later can be performed at a temperature close to the ambient temperature during molding. Therefore, the distance L between the stacking surface 22 of the stage 20 and the tip 166 of the nozzle 160 can be measured, taking into account the thermal expansion of the stage 20 and the nozzle 160.

[0081] Next, as step S2, the control unit 80 performs a first contact process to control the moving mechanism 30 so that the contact head 63 of the first detection unit 61a comes into contact with the contact head 63 of the second detection unit 61b.

[0082] Specifically, the control unit 80 controls the first moving part 65a so that the tip of the contact head 63 of the first detection part 61a is positioned in the -Z-axis direction relative to the tip 166 of the nozzle 160. Furthermore, the control unit 80 controls the second moving part 65b so that the tip of the contact head 63 of the second detection part 61b is positioned in the +Z-axis direction relative to the accumulation surface 22. Next, the control unit 80 controls the moving mechanism 30 to move the second detection part 61b in the X-axis and Y-axis directions. Next, the control unit 80 controls the moving mechanism 30 to move the first detection part 61a in the -Z-axis direction, thereby bringing the first detection part 61a into contact with the second detection part 61b.

[0083] As described above, the force applied by the force-applying part 64 of the first detection unit 61a is smaller than the force applied by the force-applying part 64 of the second detection unit 61b. Therefore, by contacting the first detection unit 61a and the second detection unit 61b, the switch of the first detection unit 61a is activated, and the first detection unit 61a outputs a first detection signal to the control unit 80. At this time, the switch of the second detection unit 61b is not activated. After receiving the first detection signal, the control unit 80 controls the moving mechanism 30 to move the first detection unit 61a in the +Z axis direction, thereby separating the first detection unit 61a from the second detection unit 61b.

[0084] Next, as step S3, the control unit 80 performs a second contact process to control the moving mechanism 30 so that the contact head 63 of the first detection unit 61a contacts the stacking surface 22 of the stage 20.

[0085] Specifically, the control unit 80 controls the moving mechanism 30 to move the stacking surface 22 in the X-axis and Y-axis directions. Next, the control unit 80 controls the moving mechanism 30 to move the first detection unit 61a in the -Z-axis direction, thereby bringing the first detection unit 61a into contact with the stacking surface 22. Contact between the first detection unit 61a and the stacking surface 22 activates the switch of the first detection unit 61a, causing it to output a second detection signal to the control unit 80. After receiving the second detection signal, the control unit 80 controls the moving mechanism 30 to move the first detection unit 61a in the +Z-axis direction, thereby separating the first detection unit 61a from the stacking surface 22.

[0086] Next, as step S4, the control unit 80 performs a third contact process to control the moving mechanism 30 so that the contact head 63 of the second detection unit 61b contacts the tip 166 of the nozzle 160.

[0087] Specifically, the control unit 80 controls the moving mechanism 30 to move the second detection unit 61b in the X-axis and Y-axis directions. Next, the control unit 80 controls the moving mechanism 30 to move the top end 166 in the -Z-axis direction, thereby bringing the second detection unit 61b into contact with the top end 166 of the first shaping unit 10a. This contact activates the switch of the second detection unit 61b, causing it to output a third detection signal to the control unit 80. Upon receiving the third detection signal, the control unit 80 controls the moving mechanism 30 to move the top end 166 in the +Z-axis direction, thereby separating the second detection unit 61b from the top end 166.

[0088] Furthermore, the control unit 80 controls the moving mechanism 30 to move the second detection unit 61b in the X-axis direction and the top end 166 in the -Z-axis direction, thereby bringing the second detection unit 61b into contact with the top end 166 of the second shaping unit 10b. This contact activates the switch of the second detection unit 61b, causing it to output a fourth detection signal to the control unit 80. Upon receiving the fourth detection signal, the control unit 80 controls the moving mechanism 30 to move the top end 166 in the +Z-axis direction, separating the second detection unit 61b from the top end 166. Next, the control unit 80 controls the first moving unit 65a to house the contact head 63 of the first detection unit 61a into the first heat insulation member 66a, and controls the second moving unit 65b to house the contact head 63 of the second detection unit 61b into the second heat insulation member 66b.

[0089] Next, as step S5, the control unit 80 performs a calculation process to calculate the distance L1 between the stacked surface 22 and the top end 166 of the first shaping part 10a based on the acquired first detection signal, second detection signal, and third detection signal. Furthermore, in the calculation process, the control unit 80 calculates the distance L2 between the stacked surface 22 and the top end 166 of the second shaping part 10b based on the acquired first detection signal, second detection signal, and fourth detection signal. Next, the control unit 80 causes a display unit (not shown) to display the distances L1 and L2.

[0090] After step S5 ends, when a predetermined signal is input from the operation unit, as step S6, the control unit 80 performs a modeling data acquisition process to acquire modeling data for modeling a three-dimensional model.

[0091] The styling data includes information related to the type of material stored in the material supply section 110, the movement path of the nozzle 160 relative to the stage 20, and the amount of styling material ejected from the nozzle 160.

[0092] The modeling data is created, for example, by reading shape data from cutting machine software installed in a computer connected to the 3D modeling device 100. Shape data is data representing the target shape of a 3D model created using 3D CAD (Computer Aided Design) software or 3D CG (Computer Graphics) software. As shape data, for example, data in STL (Standard Triangulated Language) or AMF (Additive Manufacturing File Format) can be used. The cutting machine software divides the target shape of the 3D model into layers of predetermined thickness and creates modeling data for each layer. The modeling data is represented using G-code or M-code, etc. The control unit 80 acquires the modeling data from a computer connected to the 3D modeling device 100 or a recording medium such as a USB (Universal Serial Bus) memory.

[0093] Next, as step S7, the control unit 80 performs a molding layer forming process by spraying molding material onto the stacking surface 22 of the stage 20 to form a molding layer.

[0094] Specifically, the control unit 80 plasticizes the material supplied between the flat auger 130 and the barrel 140 to generate molding material, and ejects the molding material from the nozzle 160. The control unit 80 continues to generate molding material, for example, until the molding layer formation process is complete. Figure 7 This is a cross-sectional view used to illustrate the forming process of the shaping layer.

[0095] like Figure 7 As shown, based on the acquired styling data, the control unit 80 controls the moving mechanism 30 to change the relative position between the nozzle 160 and the stage 20, while simultaneously controlling the styling unit 10 to spray styling material from the nozzle 160 toward the stage 20.

[0096] Specifically, before the shaping layer forming process begins, that is, before the shaping layer M1, which serves as the first shaping layer, begins to form, the nozzle 160 is positioned at an initial position in the -X-axis direction relative to the end of the stage 20 in the -X-axis direction. When the shaping layer forming process begins, as... Figure 7 As shown, the control unit 80 controls the moving mechanism 30, thereby causing the nozzle 160 to move relative to the stage 20 in the +X axis direction. As the nozzle 160 passes over the stage 20, shaping material is ejected from the nozzle 160. This forms the shaping layer M1. Figure 7 In this context, n is set to any natural number, and the modeling layer diagram is extended up to the nth modeling layer Mn.

[0097] Next, as step S8, the control unit 80 performs a judgment process based on the modeling data to determine whether the formation of all modeling layers has been completed.

[0098] If it is determined that the formation of all shaping layers has not been completed (NO in step S8), the control unit 80 returns the process to step S7. The control unit 80 repeatedly performs steps S7 and S8 until it is determined in step S8 that the formation of all shaping layers has been completed.

[0099] On the other hand, if it is determined that the formation of all shaping layers has been completed (YES in step S8), as step S9, the control unit 80 performs a heater drive stop process to stop the drive of the upper heater 50 and the barrel heater 150.

[0100] Alternatively, the control unit 80 may stop the operation of the upper heater 50 and the barrel heater 150 after a predetermined time has elapsed between steps S5 and S6, and then restart the operation of the upper heater 50 and the barrel heater 150 in step S7. Furthermore, steps S2, S3, and S4 do not need to be performed in this order; steps S2 to S4 can be performed in any order.

[0101] After that, the control unit 80 ended the processing.

[0102] 1.3. Effects

[0103] The three-dimensional modeling apparatus 100 includes a measuring unit 60, which measures the distance L between the stacking surface 22 and the top end 166. The measuring unit 60 has a first contact-type detection unit 61a that moves in conjunction with the nozzle 160, and a second contact-type detection unit 61b that moves in conjunction with the stage 20. The first detection unit 61a and the second detection unit 61b are configured such that if contact occurs between them, either the first detection unit 61a or the second detection unit 61b will detect the contact.

[0104] Therefore, in the 3D modeling device 100, compared to situations where contact is detected by the first detection unit during the first contact between the first and second detection units, and by the second detection unit during the second contact between the first and second detection units, or where contact is detected simultaneously by the first and second detection units, the calculation processing for calculating the distance L in the control unit 80 is easier to perform. Furthermore, since the detection signal is actually output through contact between the first detection unit 61a and the second detection unit 61b, the distance L can be measured more accurately compared to, for example, using a non-contact detection unit.

[0105] In the 3D modeling apparatus 100, the measuring unit 60 includes: a first moving unit 65a that moves the first detection unit 61a to a measuring position and a standby position; and a second moving unit 65b that moves the second detection unit 61b to the measuring position and the standby position. Therefore, in the 3D modeling apparatus 100, by moving the first detection unit 61a and the second detection unit 61b to the standby position during the modeling layer forming process of ejecting modeling material to form a modeling layer, the modeling layer forming process can be performed without being obstructed by the first detection unit 61a and the second detection unit 61b.

[0106] In the 3D modeling apparatus 100, the measuring unit 60 includes: a first heat-insulating member 66a that covers the first detection unit 61a in the standby position; and a second heat-insulating member 66b that covers the second detection unit 61b in the standby position. Therefore, in the 3D modeling apparatus 100, it is possible to suppress the possibility that the first detection unit 61a and the second detection unit 61b may deteriorate in the standby position, for example, due to the heat from the upper heater 50.

[0107] In the 3D modeling apparatus 100, the first detection unit 61a and the second detection unit 61b are detection units that detect contact by pressing the contact head 63 to make current conduction or non-conductivity occur. The first detection unit 61a and the second detection unit 61b have a force-applying part 64 that applies force to the contact head 63 outwards. The force applied by the force-applying part 64 of the first detection unit 61a is different from that of the force-applying part 64 of the second detection unit 61b. Therefore, in the 3D modeling apparatus 100, by adjusting the force applied by the force-applying part 64, it is possible to detect contact only by one of the first detection unit 61a and the second detection unit 61b when contact occurs.

[0108] In the 3D modeling apparatus 100, the force applied by the force-applying part 64 of the first detection unit 61a is smaller than the force applied by the force-applying part 64 of the second detection unit 61b. Therefore, in the 3D modeling apparatus 100, if the first detection unit 61a and the second detection unit 61b come into contact, only the first detection unit 61a can detect that contact has occurred.

[0109] In the 3D modeling apparatus 100, the control unit 80 performs the following processes: a first contact process, controlling the moving mechanism 30 to bring the first detection unit 61a into contact with the second detection unit 61b; a second contact process, controlling the moving mechanism 30 to bring the first detection unit 61a into contact with the stacking surface 22; and a third contact process, controlling the moving mechanism 30 to bring the second detection unit 61b into contact with the top end 166. Therefore, in the 3D modeling apparatus 100, the control unit 80 can automatically calculate the distance L between the stacking surface 22 and the top end 166.

[0110] Furthermore, when the force applied by the force-applying part 64 of the first detection unit 61a is smaller than the force applied by the force-applying part 64 of the second detection unit 61b, a detection signal will be continuously output from the first detection unit 61a in both the first contact processing and the second contact processing. Therefore, the computational processing of the control unit 80 can be easily performed.

[0111] For example, if the force applied by the force-applying unit of the first detection unit is larger than the force applied by the force-applying unit of the second detection unit, a detection signal will be output from the second detection unit in the first contact process, then from the first detection unit in the second contact process, and then from the second detection unit in the third contact process. If the detection unit that outputs the detection signal is replaced each time a contact process is performed, the computational processing of the control unit becomes complex.

[0112] In the 3D modeling apparatus 100, the control unit 80 performs a first contact process, a second contact process, and a third contact process when the modeling unit 10, the stage 20, or the nozzle 160 is replaced. Although when the modeling unit 10, the stage 20, or the nozzle 160 is replaced, there may be a deviation of the distance L between the stacking surface 22 and the top end 166 from a predetermined value, in the 3D modeling apparatus 100, even if the distance L deviates due to the replacement, the deviation can be corrected by the first contact process, the second contact process, and the third contact process.

[0113] The 3D modeling apparatus 100 includes a first replacement detection unit 70, which detects at least one of the replacements of the modeling unit 10, the stage 20, and the nozzle 160. Therefore, in the 3D modeling apparatus 100, the first replacement detection unit 70 can automatically detect at least one of the replacements of the modeling unit 10, the stage 20, and the nozzle 160.

[0114] In the 3D modeling apparatus 100, the modeling unit 10 includes a first modeling unit 10a and a second modeling unit 10b. During a third contact process, the control unit 80 contacts the second detection unit 61b with the top end 166 of the first modeling unit 10a, and also contacts the top end 166 of the second modeling unit 10b. Therefore, in the 3D modeling apparatus 100, the height deviation between the top end 166 of the first modeling unit 10a and the top end 166 of the second modeling unit 10b can be detected.

[0115] The 3D modeling apparatus 100 includes an upper heater 50 located above the nozzle opening 164 during modeling and moving in conjunction with the nozzle 160. When viewed from the Z-axis, the upper heater 50 covers at least a portion of the stacking surface 22 when the nozzle opening 164 overlaps with the center of the stage 20. The first detection unit 61a, when viewed from the Z-axis, is positioned inwards from the outer edge 59 of the upper heater 50. Therefore, compared to a case where the first detection unit is positioned outwards from the outer edge of the upper heater, the 3D modeling apparatus 100 can be miniaturized because the movement distance of the first detection unit 61a when it comes into contact with the object can be reduced.

[0116] 2. Variations of three-dimensional modeling devices

[0117] Next, the three-dimensional modeling device involved in the modified example of this embodiment will be described.

[0118] Hereinafter, in the three-dimensional modeling apparatus of the modified example of this embodiment, the differences from the example of the three-dimensional modeling apparatus 100 of this embodiment described above will be described, while the similarities will be omitted.

[0119] In the aforementioned three-dimensional modeling device 100, the material supplied from the material supply unit 110 is ABS resin.

[0120] In contrast, in the three-dimensional modeling apparatus of the modified embodiment, the material supplied from the material supply unit 110 is a material other than ABS resin, or a material obtained by adding other components to ABS resin.

[0121] The materials supplied from the material supply unit 110 can include a variety of materials, such as thermoplastic materials, metallic materials, and ceramic materials, which are used as the main materials. Here, "main material" refers to the material that forms the core of the shape of the molded object and has a content of 50% or more by mass in the molded object. Among the aforementioned materials, there are materials in which these main materials are melted in monomer form, and materials in which a portion of the components contained together with the main materials are melted and formed into a paste.

[0122] As a thermoplastic material, thermoplastic resins can be used, for example. Examples of thermoplastic resins include general-purpose engineering plastics and super engineering plastics.

[0123] Examples of general-purpose engineering plastics include polypropylene (PP), polyethylene (PE), polyoxymethylene (POM), polyvinyl chloride (PVC), polyamide (PA), polylactic acid (PLA), polyphenylene sulfide (PPS), polycarbonate (PC), modified polyphenylene ether, polybutylene terephthalate, and polyterephthalic acid.

[0124] Examples of super engineering plastics include polysulfone (PSU), polyethersulfone (PES), polyphenylene sulfide (PPS), polyarylate (PAR), polyimide (PI), polyamide-imide (PAI), polyetherimide (PEI), and polyether ether ketone (PEEK).

[0125] Pigments, metals, and ceramics may also be incorporated into thermoplastic materials. Additionally, additives such as waxes, flame retardants, antioxidants, and heat stabilizers may be added. The thermoplastic material is plasticized in the plasticizing section 120 by the rotation of the flat spiral member 130 and the heating of the barrel heater 150, thereby transforming it into a molten state. Furthermore, the molding material produced in this manner hardens due to a decrease in temperature after being extruded from the nozzle 160. Preferably, the thermoplastic material is extruded from the nozzle 160 in a state where it has been heated to above its glass transition temperature and is completely molten.

[0126] In the plasticizing section 120, for example, a metal material can be used as the main material instead of the thermoplastic material described above. In this case, it is preferable to mix the components that melt during the molding process with a powder material that has been powdered from the metal material, and then add this mixture into the plasticizing section 120.

[0127] As metallic materials, examples include single metals such as magnesium (Mg), iron (Fe), cobalt (Co), chromium (Cr), aluminum (Al), titanium (Ti), copper (Cu), or nickel (Ni), or alloys containing one or more of these metals. In addition, examples include maraging steel, stainless steel, cobalt-chromium-molybdenum alloys, titanium alloys, nickel alloys, aluminum alloys, cobalt alloys, and cobalt-chromium alloys.

[0128] In the plasticizing section 120, ceramic materials can be used as the main material to replace the aforementioned metal materials. Examples of ceramic materials include oxide ceramics such as silicon dioxide, titanium dioxide, alumina, and zirconium oxide, as well as non-oxide ceramics such as aluminum nitride.

[0129] The powder materials of metal and ceramic materials supplied from the material supply section 110 may also be a mixture of powders of multiple types of single metals or alloys and powders of ceramic materials. Furthermore, the powder materials of metal and ceramic materials may be coated with, for example, the aforementioned thermoplastic resin, or other thermoplastic resins. In this case, the thermoplastic resin may be melted in the plasticizing section 120 to exhibit fluidity.

[0130] Solvents can also be added to powdered metal and ceramic materials supplied from the material supply unit 110. Examples of solvents include water; (poly)alkylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol monomethyl ether, and propylene glycol monoethyl ether; acetates such as ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, and isobutyl acetate; aromatic hydrocarbons such as benzene, toluene, and xylene; ketones such as methyl ethyl ketone, acetone, methyl isobutyl ketone, ethyl n-butyl ketone, diisopropyl ketone, and acetylacetone; alcohols such as ethanol, propanol, and butanol; tetraalkylammonium acetates; sulfoxide solvents such as dimethyl sulfoxide and diethyl sulfoxide; pyridine, γ-methylpyridine, and 2,6-dimethylpyridine; tetraalkylammonium acetate (e.g., tetrabutylammonium acetate); ionic liquids such as butyl carbitol acetate.

[0131] In addition, a binder may be added to the powdered metal and ceramic materials supplied from the material supply section 110. Examples of binders include acrylic resin, epoxy resin, silicone resin, cellulose resin or other synthetic resin, or PLA, PA, PPS, PEEK or other thermoplastic resins.

[0132] The above-described embodiments and modifications are examples and are not intended to limit the scope of the embodiments. For example, appropriate combinations of the embodiments and modifications may be made.

[0133] This invention includes structures that are substantially the same as those described in the embodiments, such as structures with the same function, method, and result, or structures with the same purpose and effect. Furthermore, this invention includes structures that replace non-essential parts of the structures described in the embodiments. Additionally, this invention includes structures that can achieve the same effect as those described in the embodiments, or structures that can achieve the same purpose. Furthermore, this invention includes structures that incorporate known techniques into the structures described in the embodiments.

[0134] Based on the above implementation methods and variations, the following can be derived.

[0135] One method of creating a three-dimensional modeling installation includes:

[0136] The shaping section has a nozzle that ejects shaping material from a nozzle opening formed at the top end;

[0137] A platform having a stacking surface for the material to be stacked;

[0138] A moving mechanism that changes the relative position between the nozzle and the stage;

[0139] The measuring unit measures the distance between the stacked surface and the top end.

[0140] The control unit controls the moving mechanism.

[0141] The measuring unit has:

[0142] A first contact-type detection unit moves in conjunction with the nozzle;

[0143] The second contact-type detection unit moves in conjunction with the stage.

[0144] The first detection unit and the second detection unit are configured such that when the first detection unit and the second detection unit come into contact, one of the first detection unit and the second detection unit will detect that contact has occurred.

[0145] According to this three-dimensional modeling device, it is easy to perform the calculation processing in the control unit to calculate the distance between the stacked surface and the top part.

[0146] In one approach to creating a three-dimensional modeling device, the following method can also be used:

[0147] The measuring unit has:

[0148] The first moving part moves the first detection part to the measurement position and the standby position;

[0149] The second moving part moves the second detection part to the measurement position and the standby position.

[0150] According to this three-dimensional modeling apparatus, by moving the first detection unit and the second detection unit to a standby position during the modeling layer forming process of spraying out modeling material to form a modeling layer, the modeling layer forming process can be performed without being hindered by the first detection unit and the second detection unit.

[0151] In one approach to creating a three-dimensional modeling device, the following method can also be used:

[0152] The measuring unit has:

[0153] A first heat-insulating component covers the first detection unit in the standby position;

[0154] The second heat insulation component covers the second detection unit in the standby position.

[0155] According to this three-dimensional modeling device, it is possible to suppress the deterioration of the first and second detection units, for example, due to the heat from the upper heater, in the standby position.

[0156] In one approach to creating a three-dimensional modeling device, the following method can also be used:

[0157] The first detection unit and the second detection unit are detection units that detect when a contact has occurred by pressing the contact head, thereby turning it into a current-conducting or non-conducting state.

[0158] Both the first detection unit and the second detection unit have force-applying parts, which apply force to the contact head to move outward.

[0159] The force applied by the force-applying part of the first detection unit is different from the force applied by the force-applying part of the second detection unit.

[0160] According to this three-dimensional modeling device, by adjusting the force applied to the force-applying part, it is possible to make only one of the first and second detection parts detect contact when the first detection part and the second detection part come into contact.

[0161] In one approach to creating a three-dimensional modeling device, the following method can also be used:

[0162] The force applied by the force-applying part of the first detection unit is smaller than the force applied by the force-applying part of the second detection unit.

[0163] According to this three-dimensional modeling device, when the first detection unit and the second detection unit come into contact, only the first detection unit can detect that contact has occurred.

[0164] In one approach to creating a three-dimensional modeling device, the following method can also be used:

[0165] The control unit performs the following processing:

[0166] The first process involves controlling the moving mechanism to bring the first detection unit into contact with the second detection unit;

[0167] The second process involves controlling the moving mechanism to bring the first detection unit into contact with the stacking surface.

[0168] The third process involves controlling the moving mechanism to bring the second detection unit into contact with the top end.

[0169] According to this three-dimensional modeling device, the distance between the stacked surface and the top part can be automatically calculated by the control unit.

[0170] In one approach to creating a three-dimensional modeling device, the following method can also be used:

[0171] The control unit performs the first process, the second process, and the third process when the shaping part is replaced, the stage is replaced, or the nozzle is replaced.

[0172] According to this three-dimensional modeling device, even if the distance between the stacked surface and the top part deviates due to replacement, the deviation can be corrected through the first contact process, the second contact process and the third contact process.

[0173] In one approach to creating a three-dimensional modeling device, the following method can also be used:

[0174] It includes a replacement inspection unit, which inspects at least one of the replacement of the shaping part, the replacement of the stage, and the replacement of the nozzle.

[0175] According to this three-dimensional modeling device, at least one of the following can be automatically detected by changing the modeling part, changing the stage, and changing the nozzle through the replacement detection unit.

[0176] In one approach to creating a three-dimensional modeling device, the following method can also be used:

[0177] The design features include a first design feature and a second design feature.

[0178] In the third process, the control unit makes the second detection unit contact the top end of the first shaping part, and also makes the second detection unit contact the top end of the second shaping part.

[0179] According to this three-dimensional modeling device, the height deviation between the top end of the first modeling part and the top end of the second modeling part can be detected.

[0180] In one approach to creating a three-dimensional modeling device, the following method can also be used:

[0181] It includes an upper heater, which is located above the nozzle opening during molding and moves in conjunction with the nozzle.

[0182] When viewed from the perpendicular direction of the stacked surface, the upper heater covers at least a portion of the stacked surface with the nozzle opening overlapping the center of the stage.

[0183] When viewed from the vertical direction, the first detection unit is positioned on the inner side compared to the outer edge of the upper heater.

[0184] According to this three-dimensional modeling device, the moving distance of the first detection unit can be reduced while making the first detection unit come into contact with the object.

[0185] Symbol Explanation

[0186] 10…Shaping section; 10a…First shaping section; 10b…Second shaping section; 20…Stage; 22…Stacking surface; 30…Moving mechanism; 32…First electric actuator; 34…Second electric actuator; 36…Third electric actuator; 40…Support member; 50…Upper heater; 52…Support plate; 54…Heater member; 56, 58…Through hole; 59…Outer edge; 60…Measuring section; 61a…First detection section; 61b…Second detection section; 62…Base plate; 63…Contact head; 64…Force application section; 65a…First moving section; 65b…Second moving section; 66a…First heat insulation member; 66b…Second heat insulation member; 67a, 67b…Through hole; 70…First replacement detection section; 72…Second replacement inspection unit; 74…Third replacement inspection unit; 80…Control unit; 100…Three-dimensional modeling device; 110…Material supply unit; 112…Supply channel; 120…Plasticizing unit; 122…Spiral housing; 124…Drive motor; 126…Shaft; 130…Flat spiral; 131…Upper surface; 132…Groove forming surface; 133…Side surface; 134…First groove; 135…Central part; 136…Connecting part; 137…Material inlet part; 140…Barrel; 142…Opposing surface; 144…Second groove; 146…Connecting hole; 148…Outer periphery; 150…Barrel heater; 160…Nozzle; 162…Nozzle flow channel; 164…Nozzle opening; 166…Top part.

Claims

1. A three-dimensional modeling device, comprising: The shaping section has a nozzle that ejects shaping material from a nozzle opening formed at the top end; A platform having a stacking surface for the material to be stacked; A moving mechanism that changes the relative position between the nozzle and the stage; The measuring unit measures the distance between the stacked surface and the top end. The control unit controls the moving mechanism. The measuring unit has: A first contact-type detection unit moves in conjunction with the nozzle; The second detection unit is a contact type, which moves in conjunction with the stage. The first moving part moves the first detection part to the measurement position and the standby position; The second moving unit moves the second detection unit towards the measurement position and the standby position. The first detection unit and the second detection unit are configured such that when the first detection unit and the second detection unit come into contact, one of the first detection unit and the second detection unit will detect that contact has occurred.

2. The three-dimensional modeling device as described in claim 1, wherein, The measuring unit has: A first heat-insulating component covers the first detection unit in the standby position; The second heat insulation component covers the second detection unit in the standby position.

3. The three-dimensional modeling device as described in claim 1 or 2, wherein, The first detection unit and the second detection unit are detection units that detect when a contact has occurred by pressing the contact head to turn the current on or off. Both the first detection unit and the second detection unit have force-applying parts, which apply force to the contact head to move outward. The force applied by the force-applying part of the first detection unit is different from the force applied by the force-applying part of the second detection unit.

4. The three-dimensional modeling device as described in claim 3, wherein, The force applied by the force-applying part of the first detection unit is smaller than the force applied by the force-applying part of the second detection unit.

5. The three-dimensional modeling device as described in claim 1, wherein, The control unit performs the following processing: The first process involves controlling the moving mechanism to bring the first detection unit into contact with the second detection unit; The second process involves controlling the moving mechanism to bring the first detection unit into contact with the stacking surface. The third process involves controlling the moving mechanism to bring the second detection unit into contact with the top end.

6. The three-dimensional modeling device as described in claim 5, wherein, The control unit performs the first process, the second process, and the third process when the shaping part is replaced, the stage is replaced, or the nozzle is replaced.

7. The three-dimensional modeling device as described in claim 6, wherein, The system includes a replacement inspection unit, which inspects at least one of the replacements of the shaping part, the stage, and the nozzle.

8. The three-dimensional modeling apparatus according to any one of claims 5 to 7, wherein, The design features include a first design feature and a second design feature. In the third process, the control unit makes the second detection unit contact the top end of the first shaping part, and also makes the second detection unit contact the top end of the second shaping part.

9. The three-dimensional modeling device as described in claim 1, wherein, It includes an upper heater, which is located above the nozzle opening during molding and moves in conjunction with the nozzle. When viewed from the perpendicular direction of the stacked surface, the upper heater covers at least a portion of the stacked surface with the nozzle opening overlapping the center of the stage. When viewed from the vertical direction, the first detection unit is positioned on the inner side compared to the outer edge of the upper heater.

Images