Resin molding method and resin molding device

Abstract

To easily create molded products with high precision by resin molding. [Solution] The method includes the steps of preparing a resin molding die having a recess formed to the contour shape of a reference object, preparing an injection container having a storage section for storing the modeling material and a discharge section formed with a diameter that can be inserted into the recess and equipped with a discharge nozzle for discharging the modeling material in the storage section, storing the modeling material in the storage section, discharging the modeling material through the discharge nozzle while controlling the discharge pressure to inject it into the recess, hardening the injected modeling material in the recess, and removing the hardened modeling material from the recess.

Description

[Technical Field]

[0001] The present invention relates to a resin molding method and a resin molding apparatus. [Background technology]

[0002] In the medical field, high precision is required when creating mouthpiece-type orthodontic devices and organ models such as the heart. Mouthpiece-type orthodontic devices are attached to the patient's teeth and are used to correct the alignment of teeth, so extremely high precision is required. On the other hand, precision is important for models such as the heart due to their complex structure.

[0003] Such products are generally produced by resin molding, specifically by pouring molten urethane resin into a mold made of colored acrylic resin using an appropriate container.

[0004] That is, Fig. 10 As shown in FIG. 1, a pair of mold halves 41, 41 that can be joined and fixed to each other are prepared to form a mold 40 for producing a molded product. 11 As shown in FIG. 1, mold halves 41, 41 are joined and fixed to form a molding die 40. 12 As shown in Figure 1, molten urethane resin is used as a molding material. 45 The mixture is placed in a pouring container 42 having a large opening, and a funnel 43 is inserted into a material pouring hole 44 formed at the end in the thickness direction. (Figure 11) The resin is inserted and locked into the mold 40, and poured into the mold 40 from the pouring container 42 through the funnel 43 so as to fall naturally, and hardened in the mold 40. After hardening, the mold halves 41, 41 are opened, and the hardened mold product is taken out and used. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4641047 Summary of the Invention [Problem to be solved by the invention]

[0006] However, when the shape or structure of a reference object, such as an orthodontic device, is extremely fine, conventional resin molding methods do not allow the urethane resin to reach the fine details of the mold, making it difficult to achieve the required precision.

[0007] Furthermore, when the urethane resin is poured from the container into the mold, air bubbles may form inside the mold, and the urethane resin may harden while containing these air bubbles. In such cases, there is a problem that the shape quality of the molded product produced by resin molding is impaired. This is a problem that is not limited to the medical field, but is also required in many other fields where mold production requires high precision.

[0008] On the other hand, when molding silicone molded products, the "LIM molding" method has traditionally been used. LIM molding is an abbreviation for Liquid Injection Molding, and is a type of injection molding in which two types of liquid, including silicone, are injected into a mold and solidified through a chemical reaction inside to produce silicone molded products.

[0009] This LIM molding method allows for more free-form shapes to be formed than other molding methods, and because it is manufactured by machine without manual intervention, it is of consistent quality, highly reliable, and durable, making it suitable for situations where greater precision and durability are required. However, such LIM molding requires large-scale manufacturing equipment.

[0010] In other words, the manufacturing equipment for LIM molding consists of the molding machine body, a LIM material supply device, and a mixer, and is produced by mixing two types of liquid LIM material with an air mixture and injecting it into a mold. As a result, LIM molding requires large-scale manufacturing facilities, and because it is necessary to first create a mold, the cost of manufacturing molded products increases, making it unsuitable for manufacturing a wide variety of molded products in small quantities.

[0011] In view of the above circumstances, an object of the present invention is to provide a resin molding method and a resin molding apparatus that can produce molded products by resin molding with high precision, simply, and at low cost. [Means for solving the problem]

[0012] In order to solve this problem, the invention described in claim 1 has a recess formed in the contour shape of the reference object, For creating orthodontic mouthpieces or organ models A process of preparing a resin molding die; a storage unit for storing a molding material; The tip a discharge part having a diameter that can be inserted into the recess and that is provided with a discharge nozzle that discharges the modeling material in the storage part; The modeling material is stored in the storage section. providing a pouring container; and pouring the build material into the pouring container; from the injection container with the discharge nozzle disposed in the recess; This is a resin molding method characterized by including the steps of: discharging the molding material through the discharge nozzle while controlling the discharge pressure and injecting it into the recess; hardening the injected molding material within the recess; and removing the hardened molding material from the recess.

[0013] The invention described in claim 2 is the resin molding method described in claim 1, characterized in that the molding material is a photopolymerization material, the molding mold is formed from a material that can transmit light, and the injection container is formed so as not to transmit light, and after injecting the molding material into the recess, the method further includes a step of irradiating light from outside the molding mold onto the molding material in the recess to promote hardening of the molding material.

[0014] In the invention described in claim 3, the optical shaping material is silicone, and the molding die is made of acrylic resin, The light irradiated from outside 3. The resin molding method according to claim 2, wherein the light is UV light.

[0015] The invention described in claim 4 is the resin molding method described in claim 1, characterized in that the molding material is a room temperature curing material.

[0016] The invention described in claim 5 is the resin molding method described in claim 1, characterized in that the molding die is a molding die created by a stereolithography 3D printer.

[0017] The invention of claim 6 is the resin molding method according to claim 1, characterized in that the injection container is a syringe.

[0018] The invention described in claim 7 is a resin molding method described in claim 1, characterized in that if air bubbles are mixed in the molding material in the recess after the molding material is injected into the recess, the injection container sucks the air bubbles through the discharge nozzle to remove the air bubbles from the molding material in the recess.

[0019] The invention of claim 8 has a recess formed in the contour shape of the reference object, For creating orthodontic mouthpieces or organ models A molding die made of resin material and a storage section for storing modeling materials a main body portion that can be held and operated by an operator during work related to molding the modeling material; and, The tip The diameter is formed so that the rod can be inserted into the recess. disposed within the recess; The building material in the container Within the recess This is a resin molding device characterized by having an injection container having an ejection section equipped with an ejection nozzle for ejecting, and an ejection pressure control device that controls the ejection pressure when ejecting the molding material.

[0020] The invention described in claim 9 is a light source that emits light capable of curing the build material; The molding material is a photo-molding material, and the injection container is formed so as not to transmit light. On the other hand , the molding die from the light source The recess is formed of a light-transmitting material, and after the molding material is injected into the recess, Kizo The molding material is applied from the outside of the mold. By the light source Irradiate light and Kizo Molding material of9. The resin molding device according to claim 8, wherein the resin molding device is configured to harden the resin.

[0021] The invention of claim 10 is a method for manufacturing a photo-lithography machine, wherein the photo-lithography material is silicone and the mold is made of acrylic resin, The light emitted from the light source 10. The resin molding device according to claim 9, wherein the light is UV light.

[0022] The invention described in claim 11 is characterized in that the molding material is 、 9. The resin molding device according to claim 8, wherein the material is a room temperature curing material.

[0023] The invention described in claim 12 is characterized in that the molding die 、 9. The resin molding device according to claim 8, wherein the mold is created by a stereolithography 3D printer.

[0024] The invention of claim 13 is characterized in that the injection container 、 9. The resin molding device according to claim 8, wherein the molding tool is a syringe. [Effects of the Invention]

[0025] According to the invention described in claim 1, a molding die having a recess formed to the contour shape of a reference object is prepared, and an injection container having a discharge part with a discharge nozzle formed to a diameter that can be inserted into the recess of the molding die is prepared. The molding material filled in the injection container is then injected into the recess of the molding die through the discharge nozzle while controlling the discharge pressure, and hardened, and the hardened molding material is removed from the mold.

[0026] Unlike conventional methods, this allows the molding material to be supplied and filled into the recess while applying discharge pressure using a container having an outlet section equipped with an outlet nozzle sized to fit into the recess of the mold, allowing the molding material to reach even the finest parts of the recess, and mold molding to be carried out without generating air bubbles, making it possible to create molded products with high precision.

[0027] Furthermore, unlike conventional LIM molding methods, there is no need to prepare molds for resin molding, and large-scale equipment is also not required, which reduces manufacturing costs and makes it possible to significantly downsize the entire equipment, including the molds and injection containers.

[0028] According to the invention described in claim 2, a photopolymerization material is used as the molding material, and in order to be able to mold using the photopolymerization material, the molding mold is made of a material that can transmit light, and the injection container is made so that it does not transmit light.After the molding material is injected into the recess, light is irradiated from outside the mold onto the molding material in the recess to promote hardening of the molding material.This makes it possible to harden the molding material in a short time, thereby shortening the production time.

[0029] Furthermore, by using a molding mold that is light-transmittable, when light is irradiated from outside the molding mold onto the molding material in the recess, the light can be irradiated through the mold, which promotes the hardening of the molding material and makes it possible to further shorten the production time.

[0030] According to the invention of claim 3, the molding material is made of silicone, which is a photocurable resin, so that molding can be performed by utilizing light irradiation. That is, according to the invention described in claim 3, the molding material is silicone, the mold is made of acrylic resin, and the irradiated light is UV light, so the silicone, which is the molding material, hardens within the transparent mold by the UV light irradiated from outside. In this case, since the mold is made of acrylic, it does not adhere to the silicone, and high molding quality can be achieved.

[0031] In the invention described in claim 4, the molding material is a room temperature curing material, which means that the molding material can be cured in a room temperature environment without the need for special equipment such as a light source, making it possible to obtain a molded product.

[0032] According to the invention described in claim 5, by creating the molding mold using a stereolithography 3D printer, it is possible to prepare a precise mold relatively easily and inexpensively, and it is also possible to use the light source provided in the stereolithography 3D printer to harden the molding material in the recess.

[0033] According to the invention of claim 6, the injection container is configured as a syringe, so that the molding material can be injected into the recess of the mold with an appropriate pressure.

[0034] According to the invention described in claim 7, if air bubbles are mixed in the molding material in the recess, the air that forms the bubbles can be sucked through the discharge nozzle and removed from the molding material, thereby preventing air bubbles from entering the mold product and making it possible to obtain a mold product with high shape quality.

[0035] According to the invention of claim 8, a molding die having a recess formed in the contour shape of the reference object and formed of a resin material, and a container for storing a molding material are provided. a main body portion that can be held and operated by an operator during work related to molding the modeling material; and, The tip The diameter is formed so that the rod can be inserted into the recess. The tip of the discharge nozzle is disposed within the recess, The building material in the container Within the recess The injection container has a discharge section equipped with a discharge nozzle for discharging, and a discharge pressure control device that controls the discharge pressure when discharging the modeling material.

[0036] As a result, unlike conventional methods, the molding material is ejected while applying an appropriate ejection pressure, allowing the molding material to reach even the finest parts of the recess, making it possible to provide a resin molding mold that can create molded products with high precision.

[0037] Furthermore, unlike conventional LIM molding methods, there is no need to prepare molds for resin molding, and large-scale equipment is also not required, which reduces manufacturing costs and makes it possible to significantly downsize the entire equipment, including the molds and injection containers.

[0038] According to the invention described in claim 9, the mold is made of a material that can transmit light so that modeling can be performed using a photopolymerization material, and the injection container is made so that it does not transmit light.After the modeling material is injected into the recess, light is irradiated from outside the mold onto the modeling material in the recess to promote hardening of the modeling material.This makes it possible to harden the modeling material in a short time, thereby shortening the production time.

[0039] Furthermore, by using a mold that is light-transmittable, it is possible to irradiate the photopolymerization material in the recess with light from outside the mold through the mold, easily promoting the hardening of the molding material and further shortening the production time.

[0040] According to the invention of claim 10, the optical molding material is formed from silicone, which is a photo-curable resin, so that molding can be performed by utilizing irradiation of light. That is, according to the invention described in claim 10, the molding material is silicone, the mold is made of acrylic resin, and the light irradiated is UV light, so that the silicone molding material hardens within the transparent mold by the UV light irradiated from outside. In this case, since the molding die is made of acrylic, it does not adhere to the silicone, and high molding quality can be achieved.

[0041] In the invention described in claim 11, the molding material is a room temperature curing material, so that the molding material can be cured in a room temperature environment without the need for special equipment such as a light source, making it possible to obtain a molded product.

[0042] According to the invention described in claim 12, by creating the molding mold using a stereolithography 3D printer, a precise mold can be prepared relatively easily and inexpensively, and the light source provided in the stereolithography 3D printer can be used to harden the molding material in the recess.

[0043] According to the invention described in claim 13, by configuring the injection container as a syringe, it is possible to apply an appropriate discharge pressure to the mold recess, thereby evenly injecting the molding material into the recess while preventing the generation of air bubbles. [Brief explanation of the drawings]

[0044] [Figure 1] 1 is a schematic diagram showing an overall configuration of an embodiment of a resin molding apparatus according to the present invention; [Figure 2] 2 is a schematic diagram showing an injection container provided in the resin molding apparatus shown in FIG. 1 with a discharge nozzle attached thereto. FIG. [Figure 3] 2 is a flowchart showing a resin molding method according to the present invention, illustrating a basic flow of a resin molding process using the resin molding apparatus shown in FIG. 1. [Figure 4] 1 is a perspective view showing an example of a resin molding method and a mold for a mouthpiece applied to the resin molding method according to the present invention. FIG. [Figure 5] 1 is a side view showing an example of a molding die used in a resin molding method and a resin molding device according to the present invention. [Figure 6] 4 is an explanatory diagram of a material injection step in the resin molding process shown in FIG. 3, illustrating a resin molding method according to the present invention. [Figure 7] 4 is an explanatory view of the air bubble removing step in the resin molding process shown in FIG. 3, illustrating the resin molding method according to the present invention. FIG. [Figure 8] 4 is an explanatory diagram of a material hardening step in the resin molding process shown in FIG. 3, illustrating the resin molding method according to the present invention. FIG. [Figure 9] 4 is a plan view showing a mouthpiece, which is an example of a molded product produced by the resin molding process shown in FIG. 3. FIG. [Figure 10] FIG. 1 is an exploded plan view showing a conventional resin molding die. [Figure 11] FIG. 10 is a perspective view showing a conventional resin molding die in a joined state. [Figure 12] FIG. 10 is an explanatory diagram showing a state in which a molding material is being injected into a conventional resin molding die. DETAILED DESCRIPTION OF THE INVENTION

[0045] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0046] (Overall configuration of resin molding device) A resin molding device 1 according to one embodiment of the present invention (hereinafter referred to as a "resin molding device" or sometimes simply referred to as an "device") is used to create an orthodontic mouthpiece P. Specifically, the device 1 creates the mouthpiece P by resin molding using a mold.

[0047] In the description of this embodiment, the "reference object" is the "teeth" of a human body, and the mouthpiece P is described as the "mold product" created by the device 1.

[0048] As shown in FIG. 1, the resin molding apparatus 1 includes, as main components according to this embodiment, a molding die 11, an injection container 12 having a discharge nozzle 13, a discharge pressure control device 21, and a light source 14 (FIG. 8) described later.

[0049] The mold 11 has a recess R that allows the creation of a mouthpiece P that can fit the shape of the dentition of a human body, which is a reference object.

[0050] As shown in Figure 4, the mold 11 has a teeth section 111 that imitates the outer shape of a tooth row, a peripheral wall section 112 that surrounds the entire teeth section 111, and a bottom wall section 113 that connects the teeth section 111 and the peripheral wall section 112. The toothed portion 111 and the peripheral wall portion 112 are formed to protrude upward from the bottom wall portion 113 with a gap remaining between them.

[0051] The recess R is formed by this gap, in other words, it is formed as a space surrounded by the toothed portion 111, the peripheral wall portion 112 and the bottom wall portion 113 from directions other than above, and the recess R is open facing upward.

[0052] As shown in Figure 5, in this embodiment, a mounting table 15 is provided as a component attached to the forming mold 11. The forming mold 11 is placed on the mounting table 11 when the molding material M is poured into the forming mold 11. The mounting table 15 stabilizes the posture of the forming mold 11 during use.

[0053] The molding die 11 is made of a transparent resin, and in this embodiment, it is made by a stereolithography 3D printer using an ultraviolet-curing acrylic resin as the stereolithography material. Any suitable photocuring resin can be used as the material for the molding die 11.

[0054] As shown in FIG. 1, a molding die 11 is filled with a molding material to be injected.

[0055] In this embodiment, silicone resin is used as the modeling material, which is a UV-curable resin. Photo-curable resin refers to a resin that has the property of being cured by irradiation with light of a specific wavelength. A room-temperature curing (RTV) material may also be used as a modeling material instead of a photo-lithography material. A room-temperature curing material refers to a mold material made of a resin that cures in a room temperature environment.

[0056] (Configuration of injection container and discharge nozzle) 2, in this embodiment, injection container 12 is configured as a syringe, and has main body 121 and discharge portion 122. In the material injection step of injecting a molding material into casting mold 11, an operator can hold main body 121 of injection container 12 to perform the operation.

[0057] The main body 121 is formed in an elongated cylindrical shape overall, has an opening 121b at its upper end, and has a storage portion 121a formed so that the modeling material can be filled in. The main body 121 and the discharge portion 122 are made of a material that does not transmit light that causes the modeling material to harden, and are colored to prevent light from passing through.

[0058] Discharge portion 122 is connected to main body portion 121, and has discharge port 122a extending from storage portion 121a. The cross section of discharge port 122a has a smaller area than the cross section of storage portion 121a. The reduction in the cross section formed from storage portion 121a to discharge port 122a may be continuous or stepwise.

[0059] The discharge nozzle 13 has an elongated shape overall, and has a base-end mounting portion 131 and a distal shaft portion 132 extending from the mounting portion 131. The discharge nozzle 13 is used by being detachably attached to the discharge portion 122 of the injection container 12 via the mounting portion 131.

[0060] In this embodiment, the tip shaft 132 of the discharge nozzle 13 is made of metal and has a diameter that allows it to be inserted into the recess R of the molding die 11. That is, in this embodiment, the tip shaft 132 is formed to have a diameter that allows it to be inserted to a predetermined depth not only into the gap R1 between the peripheral wall 112 that forms the gap R and the tooth row 111, but also into the gap R2 between each tooth 111a that forms the tooth row 111, as shown in Fig. 4, and in this embodiment, the discharge nozzle 3 is formed to have a diameter of 1 mm.

[0061] Furthermore, the length dimension of the tip shaft portion 132 of the discharge nozzle 13 is formed to be larger than the distance between the upper end of the peripheral wall portion 112 and the bottom wall portion 113 so that it can be inserted up to the vicinity of the bottom wall portion 113. In this embodiment, an appropriate discharge nozzle 13 is used to properly supply and fill silicone as the molding material into the molding die 11 for creating the tooth row 111. However, since the shape and structure of the recess R of the mold will naturally differ depending on the object to be molded, discharge nozzles of other shapes and materials can be prepared as appropriate and used interchangeably.

[0062] 8, light source 14 is configured to be able to irradiate mold 11 with light that hardens the molding material after the molding material has been poured into it. When an ultraviolet-curable resin is used as the molding material, the light emitted from light source 14 is UV light (ultraviolet light). In this case, in this embodiment, the molding die 11 is formed from a transparent acrylic resin that transmits light, so that even when light (UV light in this embodiment) is irradiated from the outside by the light source 14, the light is sufficiently irradiated onto the silicone as the molding material filled inside.

[0063] (Control system configuration) In addition to the above, the resin molding apparatus 1 includes a discharge control device 21 and an input device 31 as components of the control system.

[0064] The discharge control device 21 has an appropriate pressure supply source such as a pump, and is configured to control the discharge pressure of the modeling material M by applying a predetermined pressure to the modeling material filled in the injection container 12. The discharge pressure is adjusted appropriately depending on the viscosity of the molding material. By controlling the discharge pressure and applying a discharge pressure according to the viscosity of the molding material M, it is possible to properly fill the molding material into the molding die 11.

[0065] For example, when using a molding material with high viscosity, the discharge pressure can be increased, and when using a molding material with low viscosity, the discharge pressure can be decreased, thereby making it possible to properly fill the molding material into the molding die 11.

[0066] In this embodiment, silicone is used as the modeling material M, and therefore silicone has high viscosity, and therefore it is necessary to appropriately control the discharge pressure by the discharge control device 21 as described above.

[0067] The input device 31 is operated by an operator, and generates a start signal that switches between starting and stopping the resin molding device 1 in response to the operator's operation, and also generates a pressure control signal that controls the discharge pressure of the modeling material M. The input device 31 outputs these command signals to the discharge control device 21.

[0068] (Making mouthpieces using a resin molding device) A method for producing the mouthpiece P using the resin molding apparatus 1 according to this embodiment will be described with reference to the flowchart shown in FIG.

[0069] In S1, as shown in FIG. 5, forming die 11 is placed on table 15 to prepare forming die 11.

[0070] In S2, injection container 12 equipped with discharge nozzle 13 is prepared. Discharge nozzle 13 is attached to discharge portion 122 of injection container 12.

[0071] In S3, the injection container 12 is filled with silicone, which is the modeling material M.

[0072] In S4, the injection container 12 is connected to the discharge control device 21, and the input device 31 is operated to start the discharge control device 21. As a result, the resin molding device 1 starts discharging the molding material M from the injection container 12 into the molding die 11 at a predetermined pressure.

[0073] In S5, the molding material M is injected into the recess R of the mold 11 by the injection container 12. FIG. 6 shows the material M injected into the recess R, schematically indicated by a diagonal dashed double-dashed line. As shown in Figure 6, the discharge nozzle 13 is formed with a diameter that allows it to be inserted into the recess R of the molding die 11, and is formed with a diameter that allows it to be inserted not only into the gap R1 between the peripheral wall portion 112 and the tooth row 111 that form the recess R, but also into the gap R2 between each tooth 111a that form the tooth row 111.Therefore, the discharge nozzle 13 enters not only the gap R1 between the peripheral wall portion 112 and the tooth row 111 of the molding die 11, but also into the gap R2 between each tooth 111a that form the tooth row 111, supplying and filling the entire recess R with silicone.

[0074] In S6, if bubbles A occur in the modeling material M in the recess R, the bubbles are removed using the injection container 12. That is, while holding the injection container 12, the operator operates the input device 31 to reverse the compressor built into the discharge control device 21, converting the generated discharge pressure into suction pressure, and appropriately sucking the bubbles through the discharge nozzle 13.

[0075] As shown in Figure 7, bubble A is removed from recess R by bringing the tip opening of discharge nozzle 13 into contact with bubble A and sucking out the air that forms bubble A through discharge nozzle 13 using injection container 12.

[0076] In S7, UV light is irradiated from outside the molding die 11 onto the molding material M in the recess R, thereby curing the silicone used as the molding material M. As shown in Figure 8, the molding die 11 is placed in an area irradiated with light from the light source 14, and the UV light is irradiated onto the molding die 11 from the light source 14.

[0077] In this embodiment, UV light is irradiated from above onto casting mold 11. In Figure 8, the direction of light irradiation when irradiated from above is indicated by arrow D1.

[0078] Since the mold 11 is transparent and can transmit light, the light irradiation is not limited to from above, but may be from the side of the mold 11 as shown by arrows D21 and D22, or from below as shown by arrow D3.

[0079] In S8, the mouthpiece P as a mold product formed from the hardened silicone as the molding material M is removed from the molding die 11. This completes the mouthpiece P as a mold product, as shown in FIG. The mouthpiece P is formed with a peripheral wall portion 112a, a bottom wall portion 113a, and a teeth-receiving recess portion 111b formed inside, which are molded using a mold 11.

[0080] (Explanation of action and effect) The effects obtained by this embodiment will be described below.

[0081] In the resin molding method according to this embodiment, first, a molding die 11 having a recess R is prepared, and an injection container 12 is prepared, the outlet 122 of which is fitted with a discharge nozzle 13 having a small diameter that can be inserted into the recess R. Then, the molding material M filled in the injection container 12 is injected from the discharge nozzle 13 into the recess R of the molding die 11, and the hardened molding material M is removed from the molding die 11 and taken out.

[0082] This allows the molding material M to reach even the finest parts of the recess R, making it possible to easily and quickly produce molded products that require delicate molding accuracy in fields such as the medical field by molding them with resin, without using the large-scale LIM molding equipment used in the past.

[0083] The pressure applied to the modeling material M when it is injected into the recess R can be adjusted to an appropriate level depending on the viscosity of the modeling material M. This allows an appropriate discharge pressure to be applied even when using a modeling material M with high viscosity, allowing the material M to reach every detail of the recess R and maintaining the precision of the molded product.

[0084] Furthermore, since there is no need to prepare a mold used in general resin molding, it is possible to reduce manufacturing costs and to configure a compact manufacturing facility as a whole, including the molding die 11 and the injection container 12. Because no mold is required, it is possible to provide a resin molding method suitable for small-lot production of a wide variety of products.

[0085] Secondly, by using a photo-lithography material as the modeling material M, the modeling material M can be hardened in a short time, thereby shortening the production time.

[0086] Furthermore, by adopting a light-transmitting mold 11, it becomes possible to mold using a photo-polymerization material, and by irradiating the material with light, the photo-polymerization material can be quickly hardened, making it possible to produce molded products by efficiently molding. Furthermore, when irradiating the molding material M in the recess R with light from outside the mold 11, the light can be irradiated from various angles through the mold 11, which further promotes hardening of the molding material M and enables further reduction in production time.

[0087] Thirdly, by forming the molding material M from a photocurable resin, it is possible to optimize the molding material M and thereby achieve a more appropriate resin molding method.

[0088] Furthermore, when a room temperature curing material is used as the modeling material M, it is possible to harden the modeling material M at room temperature and obtain a molded product without requiring special equipment such as a light source.

[0089] Fourth, by creating the molding die 11 using a stereolithography 3D printer, it is possible to form a precise molding die 11 relatively easily, and it is also possible to use the light source provided in the stereolithography 3D printer to harden the molding material M in the recess R.

[0090] Fifth, by configuring the injection container 12 as a syringe and using a discharge pressure control device, it becomes possible to effectively inject the modeling material M into the recess R with an appropriate pressure. In addition to injection, it becomes possible to easily suck up the modeling material M in the recess R and return it to the injection container 12.

[0091] Sixth, if bubbles A are mixed into the molding material M in the recess R, the air that forms the bubbles A is sucked in by the injection container 12 through the discharge nozzle 13 and removed from the molding material M, making it possible to obtain a mold product (in this embodiment, a mouthpiece P) that is free of bubbles A and has high shape quality.

[0092] Here, since mold 11 is transparent, the position of air bubbles A can be easily confirmed even from outside mold 11, and air bubbles A can be accurately removed.

[0093] In the above description, the reference object is the dentition of a human body, and the molded object is an orthodontic mouthpiece P. Then, the mouthpiece P was produced by resin molding using the resin molding device 1.

[0094] The molded product is not limited to the mouthpiece P, but may be other medical devices that require precision. Furthermore, the molded product is not limited to medical devices that are applied to or worn on the human body, but may be an organ model such as a heart. Furthermore, molded products are not limited to medical-related products, and may be molded products in other fields, allowing for the mold production of highly precise and stylish articles.

[0095] Furthermore, the discharge nozzle 13 attached to the injection container 12 may be replaceable depending on the fineness of the recess R into which the modeling material M is injected. In other words, it is possible to prepare a plurality of discharge nozzles 13 with different diameters in advance, and configure the nozzle 13 to be replaced with one with a smaller diameter as the shape of the recess R becomes finer.

[0096] The above-described embodiments are merely illustrative and do not limit the scope of the invention. These novel embodiments may be embodied in various other forms, and various omissions, substitutions, or modifications may be made without departing from the spirit of the invention. These embodiments and modifications thereof are included within the scope and spirit of the invention, and are also included in the scope of the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0097] 1...Resin molding equipment 11...Mold (molding mold) 111...dentition 111a Tooth 111b Tooth storage section 112, 112a...peripheral wall part 113, 113a...Bottom wall part 12...Injection container 121...Main body 121a...container 122...Discharge part 122a...Discharge port 13...Discharge nozzle 14...Light source 15...Placement table 21...Discharge control device 31...Input device 40...type 41...Mold half 42…funnel 44…Material injection hole M…Building material P... Mouthpiece (mold-made) R...Concave A...Air bubbles

Claims

1. preparing a resin mold for producing an orthodontic mouthpiece or organ model, the mold having a recess formed in the contour shape of a reference object; a step of preparing an injection container having a storage portion for storing a modeling material and a discharge portion having a tip portion formed with a diameter that can be inserted into the recess and equipped with a discharge nozzle that discharges the modeling material in the storage portion, the injection container having the modeling material stored in the storage portion; a step of discharging the modeling material from the injection container, the discharge nozzle of which is disposed in the recess, through the discharge nozzle while controlling the discharge pressure and injecting the modeling material into the recess; allowing the injected build material to harden within the recess; and removing the hardened molding material from the recess.

2. the modeling material is a photo-modeling material, and the mold is made of a material that can transmit light; The injection vessel is formed to be opaque to light; The resin molding method according to claim 1, further comprising the step of irradiating light from outside the mold onto the molding material in the recess after injecting the molding material into the recess to promote hardening of the molding material.

3. 3. The resin molding method according to claim 2, wherein the optical molding material is silicone, the mold is made of acrylic resin, and the light irradiated from outside is UV light.

4. The resin molding method according to claim 1 , wherein the molding material is a room temperature curing material.

5. The resin molding method according to claim 1 , wherein the molding die is a molding die created by a stereolithography 3D printer.

6. 2. The resin molding method according to claim 1, wherein the injection container is a syringe.

7. The resin molding method described in claim 1, further comprising a step of removing air bubbles from the molding material in the recess by sucking the air bubbles out of the molding material in the recess through the discharge nozzle using the injection container if air bubbles are mixed in the molding material in the recess after the molding material is injected into the recess.

8. a mold formed of a resin material for producing an orthodontic mouthpiece or an organ model, the mold having a recess formed in the contour shape of a reference object; a main body having a storage section for storing a modeling material, the main body being capable of being held and operated by an operator during work related to molding the modeling material; an injection container having a tip formed with a diameter that can be inserted into the recess, disposed in the recess, and having a discharge portion equipped with a discharge nozzle that discharges the modeling material in the storage portion into the recess; A resin molding device characterized by having a discharge pressure control device that controls the discharge pressure when discharging the modeling material.

9. Further comprising a light source that emits light capable of curing the molding material, the modeling material is a photo-modeling material, the injection container is formed to be opaque to light, and the mold is formed of a material that transmits the light from the light source; The resin molding device described in claim 8, characterized in that after the molding material is injected into the recess, light is irradiated from the light source from outside the molding mold onto the molding material in the recess to harden the molding material.

10. 10. The resin molding apparatus according to claim 9, wherein the optical molding material is silicone, the mold is made of acrylic resin, and the light emitted from the light source is UV light.

11. 9. The resin molding device according to claim 8, wherein the molding material is a room temperature curing material.

12. The resin molding device according to claim 8, wherein the molding die is a molding die created by a stereolithography 3D printer.

13. 9. The resin molding device according to claim 8, wherein the injection container is a syringe.

Images