JPWO2017006412A1 - Modeling apparatus and modeling method - Google Patents

Abstract

In a manufacturing apparatus including an inkjet head 78 that discharges a curable resin that contains a liquid repellent component and is cured by light irradiation, and an irradiation device 86 that emits light to the discharged curable resin, the inkjet head discharges At least one of the irradiation amount of light to the curable resin and the elapsed time from when the curable resin is discharged until the light is irradiated so that the landing diameter of the curable resin droplets is uniform Is calculated. And according to at least one of the calculated irradiation amount and elapsed time, light is irradiated to the discharged curable resin. Thereby, it becomes possible to make the landing diameter of curable resin uniform, and it becomes possible to ensure the modeling accuracy of the molded article by curable resin.

Description

  The present invention relates to a modeling apparatus and a modeling method for modeling a three-dimensional model using a curable resin that is cured by light irradiation.

  In recent years, as described in the following patent documents, a curable resin that is cured by light irradiation is discharged, and the discharged curable resin is irradiated with light to form a three-dimensional structure. Technology has been developed.

JP 2006-000773 A

  Some UV curable resins contain a liquid repellent component, and when a three-dimensional structure is formed using a curable resin containing a liquid repellent component, there is a possibility that the modeling accuracy cannot be secured. . Specifically, when a three-dimensional structure is formed with a curable resin, the curable resin is discharged in a thin film shape, and a cured layer is formed by curing the thin film curable resin. Then, a curable resin is discharged in a thin film shape on the cured layer, and the cured layer is laminated by curing the curable resin in the thin film shape. Thus, a three-dimensional structure is modeled by laminating a plurality of hardened layers. When the curable resin as the raw material of the cured layer contains a liquid repellent component, the concentration of the liquid repellent component varies depending on various conditions, and the liquid repellent performance of the cured layer may not be constant. When the liquid repellency of the cured layer is not constant, the landing diameter of the curable resin discharged onto the cured layer is not constant, and the modeling accuracy cannot be ensured. This invention is made | formed in view of such a situation, and makes it a subject to make the landing diameter of curable resin uniform.

  In order to solve the above-described problems, a modeling apparatus of the present invention includes a discharge device that discharges a curable resin that contains a liquid repellent component and is cured by light irradiation, and light is applied to the curable resin discharged by the discharge device. In a modeling apparatus for modeling a three-dimensional structure, the control apparatus is ejected by the ejection device. The irradiation amount of light to the curable resin by the irradiation device and the irradiation device after the curable resin is discharged by the discharge device so that the landing diameter which is the diameter of the droplets of the curable resin is uniform. A calculation unit that calculates at least one of the elapsed time until light is irradiated by the discharge unit, and discharge by the discharge device according to at least one of the irradiation amount and the elapsed time calculated in the calculation unit And having an irradiation unit for irradiating light to the curable resins.

  In order to solve the above-described problems, the modeling method of the present invention includes a discharge device that discharges a curable resin that contains a liquid repellent component and is cured by light irradiation, and light is applied to the curable resin discharged by the discharge device. In a modeling method for modeling a three-dimensional modeled object by a modeling apparatus provided with an irradiation device for irradiating the surface, the modeling method has a uniform landing diameter which is a diameter of a droplet of a curable resin discharged by the discharge device. As such, at least one of the irradiation amount of light to the curable resin by the irradiation device and the elapsed time from when the curable resin is discharged by the discharge device to when the light is irradiated by the irradiation device is calculated. In the discharging step according to at least one of the calculating step, the discharging step of discharging the curable resin by the discharging device, and the irradiation amount and the elapsed time calculated in the calculating unit. Characterized in that it comprises an irradiation step of irradiating light to the curable resin discharged Te.

  In the modeling apparatus and the modeling method according to the present invention, the amount of light applied to the curable resin and the curable resin are discharged so that the landing diameter of the curable resin discharged by the discharge device is uniform. At least one of the elapsed time until the light is irradiated is calculated. And according to at least one of the calculated irradiation amount and elapsed time, light is irradiated to the discharged curable resin. This makes it possible to make the landing diameter of the curable resin uniform.

It is a top view which shows an electronic device manufacturing apparatus. It is a block diagram which shows a control apparatus. It is a schematic diagram which shows the state by which ultraviolet curable resin was discharged on the hardened layer. It is a schematic diagram which shows the state by which ultraviolet curable resin was discharged on the hardened layer. It is a schematic diagram which shows the state in which the ultraviolet curing resin is irradiated with ultraviolet rays. It is a schematic diagram which shows the state in which the ultraviolet curing resin is irradiated with ultraviolet rays. It is a schematic diagram which shows the state by which ultraviolet curable resin was discharged on the hardened layer. It is a schematic diagram which shows the state by which ultraviolet curable resin was discharged on the hardened layer. It is a figure which shows the relationship between storage time and a landing diameter. It is a figure which shows the relationship between the storage amount and a landing diameter. It is a figure which shows the relationship between irradiation time and a landing diameter. It is a figure which shows the relationship between leaving time and a landing diameter.

  FIG. 1 shows an electronic device manufacturing apparatus 10. The electronic device manufacturing apparatus (hereinafter may be abbreviated as “manufacturing apparatus”) 10 includes a transport device 20, a first modeling unit 22, a second modeling unit 24, and a control device (see FIG. 2) 26. The conveying device 20, the first modeling unit 22, and the second modeling unit 24 are disposed on the base 28 of the manufacturing apparatus 10. The base 28 has a generally rectangular shape. In the following description, the longitudinal direction of the base 28 is orthogonal to the X-axis direction, and the short direction of the base 28 is orthogonal to both the Y-axis direction, the X-axis direction, and the Y-axis direction. The direction will be described as the Z-axis direction.

  The transport device 20 includes an X-axis slide mechanism 30 and a Y-axis slide mechanism 32. The X-axis slide mechanism 30 has an X-axis slide rail 34 and an X-axis slider 36. The X-axis slide rail 34 is disposed on the base 28 so as to extend in the X-axis direction. The X-axis slider 36 is held by an X-axis slide rail 34 so as to be slidable in the X-axis direction. Furthermore, the X-axis slide mechanism 30 has an electromagnetic motor (see FIG. 2) 38, and the X-axis slider 36 moves to an arbitrary position in the X-axis direction by driving the electromagnetic motor 38. The Y axis slide mechanism 32 includes a Y axis slide rail 50 and a stage 52. The Y-axis slide rail 50 is disposed on the base 28 so as to extend in the Y-axis direction, and is movable in the X-axis direction. One end of the Y-axis slide rail 50 is connected to the X-axis slider 36. A stage 52 is held on the Y-axis slide rail 50 so as to be slidable in the Y-axis direction. Furthermore, the Y-axis slide mechanism 32 has an electromagnetic motor (see FIG. 2) 56, and the stage 52 moves to an arbitrary position in the Y-axis direction by driving the electromagnetic motor 56. As a result, the stage 52 moves to an arbitrary position on the base 28 by driving the X-axis slide mechanism 30 and the Y-axis slide mechanism 32.

  The stage 52 includes a base 60, a holding device 62, and a lifting device 64. The base 60 is formed in a flat plate shape, and a circuit board or the like is placed on the upper surface. The holding device 62 is provided on both sides of the base 60 in the X-axis direction. Then, both edge portions in the X-axis direction of the circuit board or the like placed on the base 60 are sandwiched by the holding device 62, whereby the circuit board or the like is fixedly held. The lifting device 64 is disposed below the base 60 and lifts the base 60.

  The first modeling unit 22 is a unit that models a resin layer, and includes a printing unit 72, a curing unit 74, and an imaging unit 76. The printing unit 72 includes an inkjet head (see FIG. 2) 78 and a detection sensor (see FIG. 2) 80. The inkjet head 78 discharges an ultraviolet curable resin from a discharge nozzle formed on the lower surface. The inkjet head 78 may be, for example, a piezo method using a piezoelectric element, or a thermal method in which a resin is heated to generate bubbles and discharged from a nozzle. Further, the detection sensor 80 detects the storage amount of the ultraviolet curable resin stored in the ink jet head 78.

  The curing unit 74 includes a flattening device (see FIG. 2) 82 and an irradiation device (see FIG. 2) 86. The flattening device 82 flattens the upper surface of the ultraviolet curable resin discharged by the inkjet head 78. For example, the surface of the ultraviolet curable resin is leveled and the excess resin is scraped off by a roller or a blade. Thus, the thickness of the UV curable resin is made uniform. The irradiation device 86 includes a mercury lamp or an LED as a light source, and irradiates the ultraviolet curable resin discharged by the inkjet head 78 with ultraviolet rays. Thereby, the ultraviolet curable resin discharged by the inkjet head 78 is cured, and the resin layer is formed.

  The imaging unit 76 has a camera (see FIG. 2) 88. The camera 88 is disposed in a state of facing downward, and images the ultraviolet curable resin discharged by the inkjet head 78. Then, based on the imaging data, a landing diameter which is a diameter of a droplet of the ultraviolet curable resin discharged by the inkjet head 78 is calculated.

  The second modeling unit 24 is a unit that models wiring, and includes a printing unit 90 and a firing unit 92. The printing unit 90 has an inkjet head (see FIG. 2) 96, and discharges metal ink in a linear shape. The metal ink is obtained by dispersing metal fine particles in a solvent. The inkjet head 96 discharges a conductive material from a plurality of nozzles by, for example, a piezo method using a piezoelectric element.

  The firing unit 92 includes a laser irradiation device (see FIG. 2) 98. The laser irradiation device 98 is a device that irradiates a metal ink ejected by the inkjet head 96 with a laser, and the metal ink irradiated with the laser is baked to form a wiring. The firing of the metal ink is a phenomenon in which, by applying energy, the solvent is vaporized, the metal particulate protective film is decomposed, etc., and the metal particulates are brought into contact with or fused to increase the conductivity. is there. And metal wiring is formed by baking metal ink.

  Further, as shown in FIG. 2, the control device 26 includes a controller 102, a plurality of drive circuits 104, and an image processing device 106. The plurality of drive circuits 104 are connected to the electromagnetic motors 38 and 56, the holding device 62, the lifting device 64, the inkjet head 78, the flattening device 82, the irradiation device 86, the inkjet head 96, and the laser irradiation device 98. The controller 102 includes a CPU, a ROM, a RAM, and the like, mainly a computer, and is connected to a plurality of drive circuits 104. Thereby, the operation of the transport device 20, the first modeling unit 22, and the second modeling unit 24 is controlled by the controller 102. The controller 102 is also connected to the image processing device 106. The image processing device 106 is a device for processing image data captured by the camera 88. Thereby, the controller 102 calculates the landing diameter of the ultraviolet curable resin discharged by the inkjet head 78 based on the imaging data. Further, the controller 102 is connected to the detection sensor 80, and acquires information regarding the storage amount of the ultraviolet curable resin stored in the ink jet head 78.

<Operation of manufacturing equipment>
In the manufacturing apparatus 10, the circuit pattern is formed on the circuit board (see FIG. 3) with the above-described configuration. Specifically, the circuit board 110 is set on the base 60 of the stage 52, and the stage 52 is moved below the first modeling unit 22. Then, in the printing unit 72, the ultraviolet curable resin is ejected in a thin film shape onto the circuit board 110 by the inkjet head 78. Subsequently, in the curing unit 74, the upper end portion of the thin-film ultraviolet curable resin is flattened by the flattening device 82, and the flattened ultraviolet curable resin is irradiated with ultraviolet rays by the irradiation device 86. As a result, the thin film UV curable resin is cured, and a cured layer of the thin film UV curable resin is formed.

  When the cured layer of the ultraviolet curable resin is formed, the ultraviolet curable resin is discharged in a thin film shape onto the cured layer by the inkjet head 78. Then, flattening of the ultraviolet curable resin by the flattening device 82 and curing of the ultraviolet curable resin by the irradiation device 86 are performed. As a result, a cured thin film ultraviolet curable resin, that is, a cured layer is laminated on the cured layer. Thus, the resin layer is formed on the circuit board 110 by laminating the cured layer.

  When the resin layer is formed, the stage 52 is moved below the second modeling unit 24. In the printing unit 90, the metal ink is ejected linearly on the resin layer by the inkjet head 96 according to the circuit pattern. Next, in the firing unit 92, the laser is irradiated on the metal ink by the laser irradiation device 98. Thereby, the metal ink is baked, and a wiring is formed on the resin layer. As described above, in the manufacturing apparatus 10, the resin layer is formed with the ultraviolet curable resin, and the wiring is formed with the metal ions, so that the circuit pattern is formed on the circuit board 110.

  Some ultraviolet curable resins for forming the resin layer contain a liquid repellent component. As the liquid repellent component, various components such as a fluorine-based surfactant and a silicone-based surfactant can be adopted as long as they are liquid repellent, and various types of liquid, solid, waxy, etc. It is possible to employ types of ingredients. When the resin layer is formed by the ultraviolet curable resin containing such a liquid repellent component, the wettability of the resin layer is lowered. For this reason, when metal ions are ejected onto the resin layer, the contact angle of the droplets of the metal ions increases and the landing diameter decreases. Thereby, it becomes possible to enlarge the dimension of the thickness direction of a metal ion, and it becomes easy to form wiring with thickness. In view of the above, an ultraviolet curable resin containing a liquid repellent component may be employed as the ultraviolet curable resin for forming the resin layer.

  However, since the concentration of the liquid repellent component is difficult to stabilize in the ultraviolet curable resin containing the liquid repellent component, the concentration of the liquid repellent component of the ultraviolet curable resin discharged from the inkjet head 78 may be different. Specifically, for example, when an ultraviolet curable resin containing a liquid repellent component is stored in the ink jet head 78, the liquid repellent component collects in the vicinity of the inner wall surface of the ink jet head 78 over time. Tend. For this reason, the concentration of the liquid repellent component of the ultraviolet curable resin discharged after a long time has elapsed since the ultraviolet curable resin was stored in the inkjet head 78 is low. On the other hand, the concentration of the liquid repellent component of the ultraviolet curable resin discharged in a relatively short time after the ultraviolet curable resin is stored in the inkjet head 78 is high. In other words, the longer the elapsed time from when the ultraviolet curable resin is stored in the inkjet head 78 (hereinafter sometimes referred to as “storage time”), the longer the liquid repellent component of the ultraviolet curable resin discharged by the inkjet head 78 is. The concentration is lowered.

  Further, when the amount of the ultraviolet curable resin stored in the inkjet head 78 (hereinafter sometimes referred to as “storage amount”) decreases, the liquid repellent components collected on the inner wall surface of the inkjet head 78 are discharged. . For this reason, the smaller the storage amount, the higher the concentration of the liquid repellent component of the ultraviolet curable resin discharged by the inkjet head 78. That is, in the ultraviolet curable resin containing the liquid repellent component, the concentration of the liquid repellent component of the ultraviolet curable resin discharged from the ink jet head 78 varies depending on the storage time and the storage amount.

As described above, when the concentration of the liquid repellent component is changed, the liquid repellent performance of the cured ultraviolet curable resin is changed, which may reduce the formation accuracy of the resin layer. Specifically, for example, when the ultraviolet curable resin is discharged when the storage time is short, or when the storage amount is small, the concentration of the liquid repellent component of the ultraviolet curable resin is high, and thus the ultraviolet curable resin is formed. The liquid repellency of the hardened layer is increased. For this reason, when the ultraviolet curable resin 122 is discharged onto the cured layer 120 formed on the circuit board 110 in order to laminate the cured layer, the wettability of the cured layer 120 is increased as shown in FIG. Since it is low, the contact angle of the droplets of the ultraviolet curable resin 122 increases. Thus, landing diameter D ₁ of the ultraviolet curable resin 122 that has been discharged on the cured layer 120 is relatively small.

On the other hand, when the ultraviolet curable resin is discharged when the storage time is long, or when the amount of storage is large, the concentration of the liquid repellent component of the ultraviolet curable resin is low. Liquid performance is low. For this reason, when the ultraviolet curable resin 122 is discharged onto the cured layer 120 formed on the circuit board 110 to laminate the cured layer, the wettability of the cured layer 120 is increased as shown in FIG. Since it is high, the contact angle of the droplets of the ultraviolet curable resin 122 becomes small. Thus, landing diameter D ₂ of the ultraviolet curing resin 122 discharged on the cured layer 120 is relatively large. Thus, when the liquid repellent performance of the cured layer 120 changes due to the change in the concentration of the liquid repellent component, the landing diameter of the ultraviolet curable resin 122 changes. That is, when forming the resin layer by laminating the cured layer 120, it becomes impossible to make the radial dimension, height dimension, etc. of the droplets of the ultraviolet curable resin 122 constant, and the resin layer formation accuracy decreases. There is a risk of doing.

  In view of the above, in the manufacturing apparatus 10, the resin layer is formed in consideration of the concentration of the liquid repellent component of the ultraviolet curable resin. Specifically, the liquid repellent performance of the cured layer 120 is not only the concentration of the liquid repellent component of the ultraviolet curable resin, but also the irradiation time of the ultraviolet ray irradiated to the ultraviolet curable resin, or the discharged ultraviolet curable resin is irradiated with ultraviolet rays. Until the ultraviolet curable resin is allowed to stand (hereinafter, may be referred to as “leaving time”). Therefore, by adjusting the irradiation time or the leaving time of the ultraviolet curable resin, a change in the liquid repellency of the cured layer 120 is suppressed, and the landing diameter of the ultraviolet curable resin 122 is kept constant.

  Specifically, for example, when the ultraviolet curable resin is irradiated with ultraviolet rays for a long time, the ultraviolet curable resin is sufficiently cured, and the adhesiveness of the cured layer 120 is lowered. Thereby, the wettability of the cured layer 120 is increased, and the liquid repellency of the cured layer 120 is decreased. Accordingly, the contact angle of the droplets of the ultraviolet curable resin discharged onto the cured layer 120 is reduced, and the landing diameter is increased. On the other hand, when ultraviolet rays are irradiated to the ultraviolet curable resin for a short time, the ultraviolet curable resin is not sufficiently cured, and the adhesiveness of the cured layer 120 is increased. Thereby, the wettability of the hardened layer 120 becomes low, and the liquid repellency of the hardened layer 120 becomes high. Accordingly, the contact angle of the ultraviolet curable resin droplets discharged onto the cured layer 120 is increased, and the landing diameter is decreased. In other words, the longer the ultraviolet irradiation time, the lower the liquid repellency of the cured layer 120 and the larger the impact diameter of the ultraviolet curable resin discharged onto the cured layer 120. For this reason, it is possible to increase the landing diameter of the ultraviolet curable resin by lengthening the irradiation time of the ultraviolet ray, and reduce the landing diameter of the ultraviolet curable resin by shortening the irradiation time of the ultraviolet ray.

  Further, when the ultraviolet curable resin is discharged from the inkjet head 78, the liquid repellent component is deposited on the surface of the ultraviolet curable resin in the discharged ultraviolet curable resin. For this reason, as time passes after the ultraviolet curable resin is deposited by the inkjet head 78, a larger amount of the liquid repellent component is deposited on the surface of the ultraviolet curable resin. When the ultraviolet curable resin on which a large amount of the liquid repellent component is deposited is irradiated with ultraviolet rays, the cured layer 120 having high liquid repellency is formed. That is, by increasing the standing time, the liquid repellency of the cured layer 120 is increased and the landing diameter of the ultraviolet curable resin is decreased. On the other hand, when the ultraviolet curable resin on which a small amount of the liquid repellent component is deposited is irradiated with ultraviolet rays, a cured layer 120 having low liquid repellency is formed. That is, by shortening the standing time, the liquid repellency of the cured layer 120 is lowered, and the landing diameter of the ultraviolet curable resin is increased. For this reason, it is possible to reduce the landing diameter of the ultraviolet curable resin by increasing the standing time, and to increase the landing diameter of the ultraviolet curable resin by shortening the standing time.

  Therefore, in the manufacturing apparatus 10, the irradiation time or the leaving time of the ultraviolet curable resin is calculated so as to make the landing diameter of the ultraviolet curable resin 122 constant. Specifically, map data for making the landing diameter of the ultraviolet curable resin 122 constant is stored in the controller 102 for each type of the ultraviolet curable resin. In this map data, the irradiation time of ultraviolet rays is set according to the storage time and the storage amount. Specifically, the ultraviolet irradiation time is set such that the longer the storage time, the shorter the ultraviolet irradiation time, and the longer the storage amount, the shorter the ultraviolet irradiation time. That is, in this map data, the lower the concentration of the liquid repellent component of the ultraviolet curable resin, the shorter the ultraviolet irradiation time is set to reduce the landing diameter. Further, in this map data, the higher the concentration of the liquid repellent component of the ultraviolet curable resin, the longer the irradiation time of the ultraviolet rays so as to increase the landing diameter.

  In the map data, the leaving time is set according to the storage time and the storage amount. Specifically, the leaving time is set such that the longer the storage time, the longer the leaving time, and the longer the storage amount, the longer the leaving time. That is, in this map data, the lowering time is set so that the landing diameter becomes smaller as the concentration of the liquid repellent component of the ultraviolet curable resin is lower. In this map data, the leaving time is set shorter to increase the landing diameter as the concentration of the liquid repellent component of the ultraviolet curable resin is higher.

  Further, when the cured layer 120 is formed in the first modeling unit 22, the storage amount of the ultraviolet curable resin in the inkjet head 78 is detected by the detection sensor 80, and data regarding the storage amount is stored in the controller 102. Obtained by. Further, in the controller 102, the elapsed time after the ultraviolet curable resin is stored in the inkjet head 78 is measured as the storage time, and the storage time when the cured layer 120 is formed is specified. Then, based on the map data, the controller 102 calculates the ultraviolet irradiation time and the leaving time set according to the storage amount and the storage time when forming the hardened layer.

  When the ultraviolet irradiation time and the leaving time are calculated, the controller 102 determines which one of the throughput time when the irradiation time is adjusted and the throughput time when the leaving time is adjusted is short. Here, the throughput time is the time from the completion of the ejection of the ultraviolet curable resin by the inkjet head 78 to the completion of the irradiation of the ultraviolet curable resin to the ultraviolet curable resin. Specifically, a standard irradiation time of ultraviolet rays and a standard standing time in which the ultraviolet curable resin is allowed to stand until the discharged ultraviolet curable resin is irradiated with ultraviolet rays are set in advance. When the ultraviolet irradiation time is adjusted, the ultraviolet irradiation is performed for the calculated irradiation time after the standard standing time has elapsed after the ultraviolet curable resin is discharged from the inkjet head 78. That is, the throughput time when the irradiation time is adjusted is a value obtained by adding the standard standing time and the calculated irradiation time. On the other hand, when the leaving time is adjusted, the ultraviolet ray is irradiated for the standard irradiation time after the calculated leaving time has elapsed after the ultraviolet curable resin is discharged from the inkjet head 78. That is, the throughput time when the leaving time is adjusted is a value obtained by adding the calculated leaving time and the standard irradiation time.

  When the throughput time when the irradiation time is adjusted and the throughput time when the leaving time is adjusted are calculated according to the above-described procedure, it is determined which of the two throughput times is shorter. If the throughput time when the irradiation time is adjusted is short, the ultraviolet ray is irradiated for the calculated irradiation time after the standard standing time has elapsed after the ultraviolet curable resin is discharged from the inkjet head 78. On the other hand, when the throughput time when the leaving time is adjusted is short, the ultraviolet ray is irradiated for the standard irradiation time after the calculated standing time has elapsed after the ultraviolet curable resin is discharged from the inkjet head 78.

  In this way, by irradiating the ultraviolet curable resin with ultraviolet rays according to the calculated irradiation time or standing time, a cured layer having a constant liquid repellency is formed regardless of the concentration of the liquid repellency component of the ultraviolet curable resin. It becomes possible to do. Thereby, it becomes possible to make the landing diameter of the ultraviolet curable resin discharged on the cured layer constant, and the formation accuracy of the resin layer is ensured. Further, when the conventional resin layer is formed, after the ultraviolet curable resin is filled in the inkjet head 78, the discharge operation of the ultraviolet curable resin is waited until the concentration of the liquid repellent component is stabilized, which is wasteful of time. . On the other hand, by using the map data, the manufacturing apparatus 10 can perform a discharge operation even when the concentration of the liquid repellent component of the ultraviolet curable resin is not stable. Thereby, useless waiting time can be omitted. Furthermore, there is an ink jet head having an ultraviolet curable resin circulation mechanism in order to keep the concentration of the liquid repellent component constant. However, in the manufacturing apparatus 10, by using the map data, it is possible to make the landing diameter of the ultraviolet curable resin constant regardless of the concentration of the liquid repellent component of the ultraviolet curable resin. For this reason, since it is not necessary to provide a circulation mechanism in an inkjet head, it becomes possible to simplify the structure of an inkjet head. In addition, since an adjustment method according to a short throughput time of the throughput time when the irradiation time is adjusted and the throughput time when the leaving time is adjusted is adopted, the throughput can be shortened. .

  Further, as described above, the liquid repellency of the cured layer changes depending on the irradiation time of the ultraviolet rays, and thus the liquid repellency may vary depending on the portion of the cured layer. Specifically, when the cured layer is formed, for example, an ultraviolet curable resin is discharged onto the circuit board 110, but the discharged ultraviolet curable resin is dropped in a separated state. That is, as shown in FIG. 5, a plurality of droplets of the ultraviolet curable resin 130 are ejected on the circuit board 110 at a predetermined interval. This is because when a plurality of droplets of the ultraviolet curable resin 130 are ejected in an adjacent state, the plurality of droplets of the ultraviolet curable resin 130 are integrated into a large droplet, and the thickness of the cured layer cannot be adjusted. .

  Then, when a plurality of droplets of the ultraviolet curable resin 130 are discharged on the circuit board 110 in a separated state, after being flattened by the flattening device 82, ultraviolet rays are irradiated by the irradiation device 86. Thereby, the ultraviolet curable resin 130 is cured. Subsequently, as illustrated in FIG. 6, the ultraviolet curable resin 132 is discharged between the cured plural ultraviolet curable resins 130. Then, after the ultraviolet curable resin 132 is flattened by the flattening device 82, ultraviolet rays are irradiated by the irradiation device 86. As a result, the ultraviolet curable resin 132 is cured, the cured ultraviolet curable resin 132 and the previously cured ultraviolet curable resin 130 are continuous, and the cured layer 120 is formed. However, the ultraviolet curable resin 132 is irradiated with ultraviolet rays only once, but the ultraviolet curable resin 130 is irradiated with ultraviolet rays twice. That is, the ultraviolet irradiation time to the ultraviolet curable resin 130 is longer than the ultraviolet irradiation time to the ultraviolet curable resin 132. For this reason, the liquid repellency of the portion corresponding to the ultraviolet curable resin 130 of the cured layer 120 is lower than the liquid repellency of the portion corresponding to the ultraviolet curable resin 132 of the cured layer 120.

  Thus, when the liquid repellency varies depending on the portion of the cured layer 120, the landing diameter of the ultraviolet curable resin discharged onto the cured layer 120 varies. Specifically, since the liquid repellency of the portion corresponding to the ultraviolet curable resin 130 of the cured layer 120 is low, as shown in FIG. 7, when the ultraviolet curable resin 136 is discharged onto the portion, the ultraviolet curable resin 136 is discharged. The landing diameter of becomes larger. On the other hand, the liquid repellency of the portion corresponding to the ultraviolet curable resin 132 of the cured layer 120 is high. Therefore, when the ultraviolet curable resin 138 is discharged onto the portion, the landing diameter of the ultraviolet curable resin 138 becomes small. Thus, when the landing diameters of the ultraviolet curable resins 136 and 138 discharged onto the cured layer 120 are different, there is a possibility that the formation accuracy of the cured layer is lowered and a resin layer having an appropriate shape cannot be formed.

  In view of the above, in the manufacturing apparatus 10, the standing time is adjusted so that the liquid repellency is constant in any part of the cured layer 120. More specifically, the controller 102 stores map data for calculating the standing time set according to the ultraviolet irradiation time for each type of ultraviolet curable resin. In this map data, the leaving time is set so that the leaving time becomes longer as the irradiation time of ultraviolet rays becomes longer. Then, with respect to the ultraviolet curable resin 132 to which the ultraviolet ray is irradiated once at the time of forming the cured layer, a standing time (hereinafter referred to as “ultraviolet curable resin” set according to the ultraviolet irradiation time by the single ultraviolet irradiation). 132 may be described as “the remaining time of 132”) based on the map data. Further, with respect to the ultraviolet curable resin 130 irradiated with ultraviolet rays twice when forming the cured layer, a standing time (hereinafter referred to as “ultraviolet curable resin”) set according to the ultraviolet irradiation time by the two ultraviolet irradiations. May be described as “130 neglected time”) based on the map data. At this time, since the ultraviolet irradiation time to the ultraviolet curable resin 130 is longer than the ultraviolet irradiation time to the ultraviolet curable resin 132, the leaving time of the ultraviolet curable resin 130 is longer than the leaving time of the ultraviolet curable resin 132.

  And when the leaving time of each ultraviolet curable resin 130 and 132 is calculated, the ultraviolet irradiation process is performed according to the calculated leaving time. Specifically, as shown in FIG. 5, a plurality of droplets of the ultraviolet curable resin 130 are ejected on the circuit board 110 at predetermined intervals. Then, after the calculated leaving time of the ultraviolet curable resin 130 has elapsed, the ultraviolet curable resin 130 is irradiated with ultraviolet rays, and the ultraviolet curable resin 130 is cured. Subsequently, as illustrated in FIG. 6, the ultraviolet curable resin 132 is discharged between the cured plural ultraviolet curable resins 130. Then, after the calculated leaving time of the ultraviolet curable resin 132 has elapsed, the ultraviolet curable resin 132 is irradiated with ultraviolet rays, and the ultraviolet curable resin 132 is cured.

  Thereby, the cured ultraviolet curable resin 132 and the previously cured ultraviolet curable resin 130 are continuous, and the cured layer 120 is formed. When the cured layer 120 is formed, the ultraviolet curable resin 130 is irradiated with ultraviolet rays twice, so that the liquid repellency of the cured ultraviolet curable resin 130 may be lowered. Since the time is long, many liquid repellent components are deposited on the surface of the ultraviolet curable resin 130, and the decrease in liquid repellent performance is suppressed. On the other hand, since the ultraviolet curable resin 132 is irradiated with ultraviolet rays only once, the liquid repellency of the cured ultraviolet curable resin 132 may be increased. However, since the ultraviolet curable resin 130 has a short standing time, The liquid repellent component deposited on the surface of 130 is reduced, and the increase in liquid repellent performance is suppressed. Thereby, the liquid repellency of the part corresponding to the ultraviolet curable resin 130 of the cured layer 120 and the liquid repellency of the part corresponding to the ultraviolet curable resin 132 of the cured layer 120 are almost the same.

  Thus, when the liquid repellency performance of each part of the cured layer 120 is the same, as shown in FIG. 8, the landing of the ultraviolet curable resin 136 discharged on the part corresponding to the ultraviolet curable resin 130 of the cured layer 120 The diameter and the landing diameter of the ultraviolet curable resin 138 discharged on the portion corresponding to the ultraviolet curable resin 132 of the cured layer 120 are the same. Thereby, it becomes possible to ensure the formation accuracy of a hardened layer, and it becomes possible to model the resin layer of a suitable shape.

  As described above, the controller 102 stores map data for each of various ultraviolet curable resins, and the ultraviolet irradiation time and the leaving time are calculated based on each map data. It is possible to create map data corresponding to an ultraviolet curable resin of a type not stored in the table, that is, an unknown ultraviolet curable resin. Specifically, when the resin layer is formed using an unknown ultraviolet curable resin, the storage time of the ultraviolet curable resin in the inkjet head 78 and the storage amount of the ultraviolet curable resin are changed by the inkjet head 78 into ultraviolet rays. Detected every time the cured resin is discharged. Further, each time the ultraviolet curable resin is discharged and the discharged ultraviolet curable resin is irradiated with ultraviolet rays, the ultraviolet irradiation time and the standing time are also detected. Each time the ultraviolet curable resin is discharged onto the cured layer formed by irradiating the ultraviolet curable resin with ultraviolet rays, the ultraviolet curable resin is imaged by the camera 88.

At this time, the controller 102 calculates the landing diameter of the ultraviolet curable resin based on the imaging data. Then, the controller 102, the relationship between each of the detected value of the retention time T ₁ and the storage amount M and the irradiation time T ₂ and the standing time T _3, the computed landing diameter D, shown in FIGS. 9 to 12 So that it is plotted. As a result, the controller 102 creates map data for calculating the irradiation time and the leaving time of the ultraviolet rays for the unknown ultraviolet curable resin. By using the map data created in this way, it is possible to prevent a difference in landing diameter even for an unknown ultraviolet curable resin. In addition, the controller 102 can automatically create map data of an unknown ultraviolet curable resin, thereby saving the labor of creating map data by an operator.

2, the controller 102 of the control device 26 includes a discharge unit 150, a calculation unit 151, a determination unit 152, an irradiation unit 154, a first detection unit 156, and a second detection unit 158. And a creation unit 160. The discharge unit 150 is a functional unit for discharging the ultraviolet curable resin by the inkjet head 78. The computing unit 151 is a functional unit for computing the ultraviolet irradiation time and the leaving time based on the map data. The determination unit 152 is a functional unit for determining which one of the throughput time when the irradiation time is adjusted and the throughput time when the leaving time is adjusted is shorter. The irradiation unit 154 is a functional unit for irradiating ultraviolet rays according to the method determined by the determination unit 152. First detector 156 is a functional part for detecting the standing time T ₃ and the storage time T ₁ and the storage amount M and the irradiation time T _2. The second detection unit 158 is a functional unit for detecting the landing diameter D of the ultraviolet curable resin. The creation unit 160 is a functional unit for creating map data indicating the relationship between the storage time T ₁ , the storage amount M, the irradiation time T ₂ , the leaving time T ₃ , and the landing diameter D.

  Incidentally, in the said Example, the manufacturing apparatus 10 is an example of a modeling apparatus. The control device 26 is an example of a control device. The inkjet head 78 is an example of an ejection device. The irradiation device 86 is an example of an irradiation device. The calculation unit 151 is an example of a calculation unit. The determination unit 152 is an example of a determination unit. The irradiation unit 154 is an example of an irradiation unit. The first detection unit 156 is an example of a first detection unit. The second detection unit 158 is an example of a second detection unit. The creation unit 160 is an example of a creation unit. The process executed by the discharge unit 150 is an example of a discharge process. The process executed by the calculation unit 151 is an example of a calculation process. The process executed by the irradiation unit 154 is an example of an irradiation process.

  In addition, this invention is not limited to the said Example, It is possible to implement in the various aspect which gave various change and improvement based on the knowledge of those skilled in the art. For example, in the above embodiment, the irradiation time of ultraviolet rays is adjusted so as to make the landing diameter of the ultraviolet curable resin constant, but it is possible to adjust the irradiation amount per unit time of ultraviolet rays, that is, the irradiation energy. is there. It is also possible to adjust both the irradiation time and irradiation energy of ultraviolet rays.

  DESCRIPTION OF SYMBOLS 10: Manufacturing apparatus (modeling apparatus) 26: Control apparatus 78: Inkjet head (discharge apparatus) 86: Irradiation apparatus 150: Discharge part (discharge process) 151: Calculation part (calculation process) 152: Determination part 154: Irradiation part (irradiation) Step) 156: First detection unit 158: Second detection unit 160: Creation unit

Claims (5)

A discharge device that discharges a curable resin containing a liquid repellent component and cured by irradiation with light;
An irradiation device for irradiating light to the curable resin discharged by the discharge device;
In a modeling apparatus for modeling a three-dimensional structure, comprising: a control device that controls the operation of each of the discharge device and the irradiation device;
The control device is
The amount of light applied to the curable resin by the irradiation device and the curable resin discharged by the discharge device so that the landing diameter, which is the diameter of the droplets of the curable resin discharged by the discharge device, is uniform. A computing unit that computes at least one of the elapsed time from when the light is emitted by the irradiation device;
A modeling apparatus comprising: an irradiation unit configured to irradiate light to the curable resin discharged by the discharge device according to at least one of the irradiation amount calculated by the calculation unit and the elapsed time. The calculation unit calculates the irradiation amount and the elapsed time,
The control device is
A determination unit that determines which one of the throughput time according to the irradiation amount calculated in the calculation unit and the throughput time according to the elapsed time calculated in the calculation unit is short;
The irradiation unit is
When it is determined that the throughput time according to the irradiation amount is short in the determination unit, the curable resin discharged by the discharge device is irradiated with light according to the irradiation amount calculated in the calculation unit, When the determination unit determines that the throughput time corresponding to the elapsed time is short, the curable resin discharged by the discharge device is irradiated with light according to the elapsed time calculated by the calculation unit. The modeling apparatus according to claim 1. The computing unit is
The modeling apparatus according to claim 1, wherein the elapsed time is calculated according to the number of times of irradiation of light to the curable resin discharged by the discharge device. The control device is
A first detector that detects at least one of a storage time of the curable resin in the discharge device, a storage amount of the curable resin stored in the discharge device, the irradiation amount, and the elapsed time; ,
A second detection unit for detecting a landing diameter of the curable resin discharged by the discharge device;
Map data indicating a relationship between at least one of the storage time, the storage amount, the irradiation amount, and the elapsed time detected by the first detection unit, and the landing diameter detected by the second detection unit. And a creation section to create
The computing unit is
The modeling apparatus according to claim 1, wherein at least one of the irradiation amount and the elapsed time is calculated based on map data created by the creation unit. Three-dimensional modeling by a modeling apparatus including a discharging device that discharges a curable resin that contains a liquid repellent component and is cured by light irradiation, and an irradiation device that emits light to the curable resin discharged by the discharging device In a modeling method for modeling an object,
The modeling method is
The amount of light applied to the curable resin by the irradiation device and the curable resin discharged by the discharge device so that the landing diameter, which is the diameter of the droplets of the curable resin discharged by the discharge device, is uniform. A calculation step of calculating at least one of the elapsed time from when the light is irradiated by the irradiation device;
A discharge step of discharging the curable resin by the discharge device;
A molding method comprising: irradiating light to the curable resin ejected in the ejection step according to at least one of the irradiation amount computed in the computing unit and the elapsed time.

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