JPWO2015063923A1 - Forming method - Google Patents

Abstract

In the forming method of forming the modeling model 100 using a curable resin by using a discharge device that discharges the curable resin, the support materials 112, 114, and 116 molded using the biodegradable resin are integrated with the modeling model. A unitary object 120 is formed. And the support material is decomposed | disassembled by microorganisms and removed by accommodating the integrated object in the culture container 122 by which the microorganisms are culture | cultivated. This makes it possible to form a modeling model without causing damage to the modeling model, environmental pollution, thermal deformation of the modeling model, and the like.

Description

  The present invention relates to a forming method for forming a structure using a curable resin by using a discharge device that discharges the curable resin.

  In recent years, development of methods for forming various structures, so-called modeling models, using curable resins has been underway. Specifically, the curable resin is discharged in a thin film shape, and the discharged curable resin is cured. Then, the curable resin is further discharged in a thin film shape on the cured resin to cure the curable resin. In this manner, the discharge of the curable resin and the curing of the resin are repeated, and a plurality of films of the curable resin are stacked, thereby forming a modeling model using the curable resin.

  In addition, when a modeling model to be formed includes a portion protruding outward, a so-called overhang portion or the like, a forming method using a support material is employed. In detail, in order to explain later, in brief, the support material and the modeling model are integrally formed by discharging and curing the curable resin along at least a part of the support material. And a modeling model is obtained by isolate | separating a support material from the integrated object. The following patent document describes an example of a forming model forming method using a support material.

JP 2011-5666 A JP 2011-5667 A JP 2011-5668 A

  As described in the above-mentioned patent document, it is possible to form a modeling model having an overhang portion by integrally forming a support material and a modeling model and separating the support material from the integrated object. is there. However, there are various problems in the separation of the support material by the conventional method. Specifically, for example, when the support material is pulled and removed from the integrated object, the modeling model may be damaged. Moreover, when the shape of the modeling model is complicated, it may be difficult to pull the support material. In addition, when a support material molded from a material that can be dissolved in a specific liquid such as water or chemicals is used, it is possible to remove the support material by immersing the monolith in a specific liquid. . However, there is a risk of causing environmental pollution with the disposal of the liquid in which the support material is dissolved. When a support material molded from a material that can be melted by heat is used, the support material can be removed from the integrated object by heating the integrated object. However, there is a possibility that the modeling model is thermally deformed when the integrated object is heated. As described above, there is a lot of room for improvement in the formation method of the modeling model using the support material, and various improvements have been made to improve the practicality of the forming model formation method using the support material. It becomes possible to make it. This invention is made | formed in view of such a situation, and makes it a subject to provide the formation method of the modeling model using the support material with high practicality.

  In order to solve the above problems, a forming method according to claim 1 of the present application is a forming method for forming a structure using a curable resin by using a discharge device that discharges a curable resin, and is biodegradable. The biodegradation after the discharge step of discharging the curable resin by the discharge device along at least a part of the member formed by the resin, and after the discharge of the curable resin by the discharge device in the discharge step is completed And a removing step of decomposing and removing the member formed of the functional resin by microorganisms.

  Further, the forming method according to claim 2 is the forming method according to claim 1, wherein the removing step is performed by using a microorganism to form a member formed of the biodegradable resin inside a container in which the microorganism is cultured. It is a process of decomposing and removing.

  The forming method according to claim 3 is characterized in that, in the forming method according to claim 1 or 2, the member molded by the biodegradable resin is a support material.

  In the forming method according to the first aspect, the member that can be used as the support material is formed of a biodegradable resin. And the member which can be utilized as a support material is removed by biodegradable resin being decomposed | disassembled by microorganisms from the integrated object with which the member and the modeling model were integrated. This makes it possible to form a modeling model without causing damage to the modeling model, environmental pollution, thermal deformation of the modeling model, and the like.

  Further, in the forming method according to claim 2, the biodegradable resin is decomposed in the inside of the container in which the microorganisms are cultured, and the member that can be used as the support material is removed. Thereby, it becomes possible to quickly decompose the biodegradable resin and remove a member that can be used as a support material.

  Moreover, in the formation method of Claim 3, the member which can be utilized as a support material is limited to the support material. Thereby, it becomes possible to form appropriately the modeling model which has an overhang part etc.

It is a top view which shows the modeling model formation apparatus for forming a modeling model with the forming method which is an Example of this invention. It is a block diagram which shows the control apparatus with which the modeling model formation apparatus of FIG. 1 is provided. It is a perspective view which shows the modeling model formed with the modeling model formation apparatus of FIG. It is a side view which shows a support material. It is a side view which shows the integrated object with which the support material and the modeling model were integrated. It is the figure which showed a mode that the integrated object with which the support material and the modeling model were integrated is accommodated in a culture container. It is a side view which shows the integrated object in the middle of formation of a modification. It is a side view which shows the integrated object in the middle of formation of a modification.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as modes for carrying out the present invention.

<Configuration of modeling model forming apparatus>
In FIG. 1, the modeling model formation apparatus 10 of the Example of this invention is shown. The modeling model forming apparatus 10 is an apparatus for forming a modeling model using an ultraviolet curable resin. The modeling model forming apparatus 10 includes a transport device 20, a head moving device 22, an inkjet head 24, and an ultraviolet irradiation device 26.

  The conveyance device 20 includes a pair of conveyor belts 30 extending in the X-axis direction, and an electromagnetic motor (see FIG. 2) 32 that rotates the conveyor belt 30. The pair of conveyor belts 30 supports a modeling stage plate 34 for forming a modeling model, and the modeling stage plate 34 is conveyed in the X-axis direction by driving an electromagnetic motor 32. Further, the transport device 20 includes a holding device (see FIG. 2) 36. The holding device 36 fixedly holds the modeling stage plate 34 supported by the conveyor belt 30 at a predetermined position (a position where the modeling stage plate 34 in FIG. 1 is illustrated).

  The head moving device 22 includes an X-axis direction slide mechanism 50 and a Y-axis direction slide mechanism 52. The X-axis direction slide mechanism 50 has an X-axis slider 56 provided on the base 54 so as to be movable in the X-axis direction. The X-axis slider 56 is moved to an arbitrary position in the X-axis direction by driving an electromagnetic motor (see FIG. 2) 58. The Y-axis direction slide mechanism 52 has a Y-axis slider 60 provided on the side surface of the X-axis slider 56 so as to be movable in the Y-axis direction. The Y-axis slider 60 is moved to an arbitrary position in the Y-axis direction by driving an electromagnetic motor (see FIG. 2) 62. An inkjet head 24 is attached to the Y-axis slider 60. With such a structure, the inkjet head 24 is moved to an arbitrary position on the base 54 by the head moving device 22.

  The inkjet head 24 discharges an ultraviolet curable resin onto the modeling stage plate 34. Specifically, a plurality of nozzle holes (not shown) are formed on the lower surface of the inkjet head 24. Then, in accordance with the electrical signal, the ultraviolet curable resin is ejected from the plurality of nozzle holes of the inkjet head 24 using the piezoelectric element (see FIG. 2) 72 or steam bubbles caused by heat as a driving source. As a result, the ultraviolet curable resin is discharged onto the modeling stage plate 34.

  The ultraviolet irradiation device 26 includes an LED (see FIG. 2) 78 that irradiates ultraviolet rays, and is fixed to the lower surface of the Y-axis slider 60 so as to face downward. As a result, the Y-axis slider 60 is moved by the head moving device 22, so that an arbitrary position on the modeling stage plate 34 can be irradiated with ultraviolet rays.

  Moreover, the modeling model formation apparatus 10 is provided with the control apparatus 80, as shown in FIG. The control device 80 includes a controller 82, a plurality of drive circuits 84, and a control circuit 86. The plurality of drive circuits 84 are connected to the electromagnetic motors 32, 58, 62, the holding device 36, and the piezoelectric element 72, and the control circuit 86 is connected to the LED 78. The controller 82 includes a CPU, a ROM, a RAM, and the like, mainly a computer, and is connected to a plurality of drive circuits 84 and a control circuit 86. Thereby, the operation of the transport device 20, the head moving device 22, the inkjet head 24, and the ultraviolet irradiation device 26 is controlled by the controller 82.

<Formation of modeling model>
In the modeling model forming apparatus 10, the inkjet head 24 discharges an ultraviolet curable resin to the modeling stage plate 34 held by the transport device 20, and the discharged ultraviolet curable resin is cured by irradiation with ultraviolet rays. Thus, a modeling model is formed. Specifically, the modeling stage plate 34 is transported to the work position in accordance with a command from the controller 82, and the modeling stage plate 34 is fixedly held by the holding device 36 at the position. Then, the inkjet head 24 is moved above a predetermined position of the modeling stage plate 34 according to a command from the controller 82. Subsequently, the inkjet head 24 discharges an ultraviolet curable resin in a predetermined pattern on the upper surface of the modeling stage plate 34 to form a thin film of the ultraviolet curable resin.

  When the ultraviolet curable resin thin film is formed, the ultraviolet irradiation device 26 moves above the formed ultraviolet curable resin thin film according to a command from the controller 82, and the LED 78 irradiates the thin film with ultraviolet light. Thereby, the ultraviolet curable resin thin film formed on the modeling stage plate 34 is cured. Subsequently, the inkjet head 24 moves above the cured ultraviolet curable resin thin film according to a command from the controller 82, and forms an ultraviolet curable resin thin film by discharging the ultraviolet curable resin. Then, the ultraviolet irradiation device 26 moves above the formed ultraviolet curable resin thin film in response to a command from the controller 82, and the thin film is irradiated with ultraviolet light by the LED 78. By repeating the discharge of the ultraviolet curable resin and the irradiation of the ultraviolet rays, a modeling model is formed by a plurality of layers of the ultraviolet curable resin thin film.

  As described above, in the modeling model forming apparatus 10, a modeling model is formed by a plurality of layers of ultraviolet curable resin thin films. However, the modeling model has a portion protruding outward, a so-called overhang portion or the like. In some cases, it is necessary to form a modeling model using a support material. Specifically, the case where the modeling model 100 having the shape shown in FIG. 3 is formed will be described.

  The modeling model 100 to be formed is composed of a pair of leg portions 102 and 104 and a flat plate portion 106 overlaid on the pair of leg portions 102 and 104. Both end portions of the flat plate portion 106 protrude outward from the pair of leg portions 102 and 104 to form overhang portions 108 and 110. When forming the modeling model 100 having such a shape, a first support material (see FIG. 4) 112 having a shape corresponding to a space surrounded by the pair of leg portions 102 and 104 and the flat plate portion 106, and over A second support material (see FIG. 4) 114 having a shape corresponding to the space directly under the hang portion 108, and a third support material (see FIG. 4) 116 having a shape corresponding to the space directly under the overhang portion 110, It is necessary to prepare.

  Then, the three support members 112, 114, and 116 are placed on the modeling stage plate 34 as shown in FIG. And the leg part 102 is formed by repeating discharge of the ultraviolet curable resin between the 1st support material 112 and the 2nd support material 114, and irradiation of an ultraviolet-ray. Moreover, the leg part 104 is formed by repeating discharge of the ultraviolet curable resin between the 1st support material 112 and the 3rd support material 116, and irradiation of an ultraviolet-ray. When the pair of leg portions 102 and 104 are formed, the discharge of the ultraviolet curable resin and the irradiation of ultraviolet rays are repeated on the upper surfaces of the leg portions 102 and 104 and the upper surfaces of the three support members 112, 114, and 116. As a result, the flat plate portion 106 is formed. Thereby, as shown in FIG. 5, an integrated object 120 in which the modeling model 100 and the three support materials 112, 114, 116 are integrated is formed.

  Although the formation of the modeling model 100 is completed by separating the three support members 112, 114, and 116 from the integrated object 120, there are various problems in separating the support members by the conventional method. Specifically, for example, when the support members 112, 114, and 116 are pulled to remove the support members 112, 114, and 116 from the integrated object 120, the modeling model 100 may be damaged. Moreover, when the shape of the modeling model is complicated, it may be difficult to pull the support material.

  Further, when a support material formed of a material that can be dissolved in a specific liquid such as water or chemicals is used, the support materials 112, 114, and 116 are integrated by immersing the integrated body 120 in the specific liquid. It can be separated from the object 120. However, there is a risk of causing environmental pollution with the disposal of the liquid in which the support material is dissolved. Further, when a support material molded from a material that can be melted by heat is used, the support materials 112, 114, and 116 can be separated from the integral material 120 by heating the integral material 120. However, when the integrated object 120 is heated, the modeling model 100 may be deformed.

  In view of the above, each of the three support materials 112, 114, 116 is formed of polycaprolactone. Polycaprolactone is a biodegradable resin and is degraded by microorganisms. That is, the support materials 112, 114, and 116 are disassembled by being left in a natural environment and removed from the integrated object 120. However, since it takes time to disassemble the support materials 112, 114, and 116 when left in a natural environment, the integrated object 120 is accommodated in a culture vessel 122 in which microorganisms are cultured as shown in FIG. The

  Various microorganisms such as yeast, bacteria, fungi, and viruses can be adopted as microorganisms cultured in the culture vessel 122 as long as they are capable of degrading biodegradable resins such as polycaprolactone. It is. The culture container 122 contains not only microorganisms but also nutrients of microorganisms. Furthermore, when the monolith 120 is accommodated in the culture vessel 122, the temperature and humidity at which the microorganisms can preferably act are maintained. As a result, the support materials 112, 114, and 116 can be quickly disassembled, and the support materials 112, 114, and 116 can be removed from the integrated object 120.

  As described above, in this embodiment, the support material 112, 114, 116 molded from the biodegradable resin is used as the support material used when forming the modeling model, so that the modeling model 100 is damaged, environmental pollution, and the modeling model. The modeling model 100 can be formed without causing thermal deformation of the 100 or the like.

  Incidentally, the ink jet head 24 is an example of a discharge device in the above embodiment. The support materials 112, 114, and 116 are examples of support materials. The culture container 122 is an example of a container. The method of forming the modeling model 100 using the support materials 112, 114, and 116 is an example of a forming method. The step of discharging the ultraviolet curable resin by the inkjet head 24 is an example of a discharge step. The process of disassembling and removing the support materials 112, 114, and 116 in the culture vessel 122 is an example of a removal process. The ultraviolet curable resin is an example of a curable resin. Polycaprolactone is an example of a biodegradable resin.

  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. Specifically, for example, in the above embodiment, the support materials 112, 114, 116 are placed on the modeling stage plate 34, and the resin of the ink jet head 24 between the support materials 112, 114, 116, etc. Although the integrated object 120 is formed by discharging, the entire integrated object 120 can be formed by discharging resin by the inkjet head 24.

  Specifically, the inkjet head 24 has a structure capable of discharging not only an ultraviolet curable resin that is a raw material of the modeling model 100 but also a liquid biodegradable resin that is a raw material of the support materials 112, 114, and 116. The inkjet head 24 discharges the ultraviolet curable resin and the biodegradable resin onto the modeling stage plate 34. As shown in FIG. 7, the ultraviolet curable resin thin film 130 and the biodegradable resin thin film 132 Is formed. The thin films 130 and 132 are cured by irradiating the thin films 130 and 132 with ultraviolet rays. The liquid biodegradable resin used as the raw material for the support materials 112, 114, and 116 also has a property of being cured by irradiation with ultraviolet rays.

  Subsequently, the ultraviolet curable resin and the biodegradable resin are ejected onto the cured thin films 130 and 132 by the inkjet head 24, and the ultraviolet curable resin thin film and the biodegradable resin thin film are laminated. And the ultraviolet-ray is irradiated to the laminated | stacked thin film. By repeating the discharge of the ultraviolet curable resin and the biodegradable resin by the inkjet head 24 and the irradiation of the ultraviolet rays, a shaped article 134 having the shape shown in FIG. 8 is formed.

  When the shaped article 134 is formed, the ultraviolet curable resin is discharged onto the upper surface of the shaped article 134 by the inkjet head 24, and a thin film of the ultraviolet curable resin is formed. And the ultraviolet-ray is irradiated to the thin film of the ultraviolet curable resin. By repeating the discharge of the ultraviolet curable resin by the inkjet head 24 and the irradiation of the ultraviolet rays, the integrated object 120 shown in FIG. 5 is formed. In this way, the entire integrated body 120 can be formed by discharging resin with the inkjet head 24.

  For example, in the said Example, although the support materials 112,114,116 are decomposed | disassembled early in the culture container 122, it is possible to decompose | disassemble in a natural environment. However, if the support materials 112, 114, and 116 are decomposed in a natural environment, the decomposition time becomes very long, and a new effect is produced. Specifically, for example, when the integrated object 120 is put in a water tank or the like, the support materials 112, 114, and 116 have a cubic shape before disassembly, and the support materials 112, 114, As 116 gradually decomposes, the cube shape changes into an arch shape. That is, there is an effect that the shape of the predetermined structure changes with time. By utilizing such an effect, it is possible to form an integral object as a toy or the like.

  Further, for example, by forming a flower pot, a thing submerged in a fishing reef, or the like as an integrated body of the support material and the modeling model, it is possible to use an effect that changes over time. Specifically, for example, when a flower pot is formed as an integrated object, a drainage hole or the like is formed with the passage of time, and the flower pot can be changed to a shape according to the growth of the plant. In addition, when a thing that sinks into a reef is formed as an integral object, it becomes possible to increase the hole for fish to enter over time, and it is possible to change the reef to a shape according to the growth of the fish Become.

  Note that when the integral is used in such a method, the member molded from the biodegradable resin does not need to be used as a support material. What is necessary is just to form integrally with the member formed by hardening. In other words, regardless of the presence or absence of the overhang portion of the modeling model, it is possible to form an integral object by discharging and curing the ultraviolet curable resin along at least a part of the member molded by the biodegradable resin. Is possible. Thereby, the integrated object which deform | transforms with progress of time is formed.

  In the above examples, polycaprolactone is used as the biodegradable resin. However, there are various types such as polylactic acid, polyhydroxyalkanoate, polyglycolic acid, modified polyvinyl alcohol, casein, modified starch, and PET copolymer. It is possible to adopt a biodegradable resin.

  Moreover, in the said Example, although ultraviolet curable resin is employ | adopted as curable resin, it is possible to employ | adopt resin etc. which harden | cure by the light of specific wavelengths other than an ultraviolet-ray, the resin hardened | cured with a heat | fever. Moreover, it is possible to employ | adopt resin which discharges resin melt | dissolved by heating with a discharge device and hardens | cures at normal temperature as curable resin. Specifically, for example, ABS resin or the like can be employed. The apparatus for discharging the curable resin is not limited to the inkjet head 24, and a dispenser head or the like can be employed.

  24: inkjet head (discharge device) 112: first support material 114: second support material 116: third support material 122 culture vessel (container)

Claims (3)

In a forming method of forming a structure with a curable resin using a discharge device that discharges the curable resin,
The forming method is
A discharge step of discharging the curable resin by the discharge device along at least a part of the member formed of the biodegradable resin;
And a removing step of decomposing and removing the member formed of the biodegradable resin by microorganisms after the discharge of the curable resin by the discharge device in the discharge step is completed. The removing step comprises
The forming method according to claim 1, which is a step of decomposing and removing a member formed of the biodegradable resin with a microorganism in a container in which the microorganism is cultured.   The forming method according to claim 1, wherein the member formed of the biodegradable resin is a support material.

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