JP2016032920A - Three-dimensional molding apparatus and insulation rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-dimensional molding apparatus for manufacturing a three-dimensional molded article by using a photo-curable resin material that is cured by irradiation with light, and an insulation rod molded by the above apparatus.SOLUTION: A three-dimensional molding apparatus 1 has the following characteristics: a light source A emits light; scanning means 2 allows laser light 6 exiting from the light source to scan an object in a predetermined direction; a pair of electrodes 7A, 7B is disposed at positions for receiving the laser light 6 operated to scan by the scanning means 2; a drive unit rotates the electrodes 7A, 7B around a rotation axis 31 in a direction where the laser light 6 propagates; and the position of the rotation axis 31 is coincident with a liquid surface of a photo-curable resin material 8.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a three-dimensional modeling apparatus that produces a three-dimensional modeled object that is formed using a photocurable resin material that is cured when irradiated with light, and an insulating rod that is modeled by the apparatus.

  Currently, a three-dimensional modeling apparatus using a photo-curing resin material having a property of being cured by irradiation with light such as visible light or ultraviolet light is known. Such a three-dimensional modeling apparatus produces a three-dimensional modeled object using, for example, two types of methods, a free liquid level method and a regulated liquid level method.

  The three-dimensional modeling apparatus using the free liquid surface method sinks a three-dimensional model support plate that becomes the foundation of a model in a storage tank that stores a photocurable resin material, and irradiates light from above the liquid level of the storage tank. And the operation | work which laminates | stacks the layer of a three-dimensional modeling thing is repeated, lowering the modeling object support plate in a storage tank, and producing a three-dimensional modeling thing.

  Then, the modeled object is modeled so that the modeled object is cured by a predetermined liquid layer thickness on the surface of the modeled object support plate arranged in the storage tank. Further, the modeling object support plate is moved downward by a predetermined liquid layer thickness, and a new modeling object layer is cured on the already cured three-dimensional modeling object. A layer of a new model is sequentially cured on such a cured three-dimensional model, and the layer of the model is stacked to produce a three-dimensional model.

  On the other hand, a three-dimensional modeling apparatus using a regulated liquid surface method uses a storage tank having a bottom surface that transmits light as a storage tank. Then, light is irradiated from the lower side of the storage tank, a layer of the three-dimensional structure is formed between the modeling object support plate and the bottom surface in the storage tank, and the modeling object support plate is peeled off from the bottom and raised. The operation of laminating the layers of the three-dimensional structure is repeated to produce a three-dimensional structure.

  All the 3D modeling apparatuses using the above-mentioned free liquid level method and the regulated liquid level method take a method of laminating a photo-curing resin material cured in a planar shape to produce a three-dimensional modeled object. ing. Therefore, in the case of the free liquid level method, when one layer of modeling is completed, the three-dimensional modeled object support plate is moved downward, and then the liquid level is swept using a jig like a hand to shorten it. A method of stabilizing the surface over time is taken.

  In the case of the regulated liquid surface method, when one layer of modeling is completed, the modeled object is peeled off from the bottom surface of the storage tank that is the regulated surface, the modeled object support plate is moved to the modeling position of the next layer, and photocuring is performed. In many cases, the resin material is forcibly convected so that the liquid level enters the gap in a short time.

  The three-dimensional modeling apparatus as described above has the following problems. That is, in the conventional three-dimensional modeling apparatus, after one layer of modeling is completed, a new uncured photocuring resin material is made to have a predetermined thickness, and then a two-stage operation is performed in which light is applied and cured. In particular, there is a problem that it takes a long time to make a new uncured photocured resin material in the second stage to have a predetermined thickness, and it is difficult to laminate in a short time.

  In particular, if the predetermined thickness is reduced, precise modeling can be performed, which increases the number of stacked layers and takes time. Therefore, various methods have been proposed for shortening the modeling time in a cylindrical shaped object.

JP 2010-94893 A

  For example, in a cylindrical shaped object, as shown in FIG. 12, a substrate cylinder 10 for three-dimensional modeling is used in advance as a shaped object support, and a cylinder in which the photocurable resin material 8 is applied to the surface of the cylinder 10 is rotated. However, a method for producing a photocured resin body 12 cured in a cylindrical shape by irradiating the photocurable resin material 8 applied to the column 10 with light being controlled by the control plate 11 is known. .

  Such a method is a technique that enables a cylindrical laminate to be formed quickly, but has the following problems. That is, when manufacturing an operation rod to which a large mechanical force is applied for operation of a power device or the like, a cylindrical shape is necessary instead of a cylinder so that a large force can be transmitted. Furthermore, it is necessary to attach the metal metal fitting for fastening with another operation part to an edge part. However, when a conventional 3D modeling device is used, the device for applying uncured resin only corresponds to a flat surface when a metal fitting is present in advance, and it cannot be accurately applied when there is a rounded protrusion. Therefore, the desired shape cannot be formed.

  The present invention has been made in view of the above-described various problems of the prior art, and the object of the present invention is a coaxial three-dimensional structure with a metal fitting attached to the end portion. Provides a three-dimensional modeling apparatus that can be modeled and that can shorten the modeling time, and an insulating rod that is modeled by the apparatus.

  A three-dimensional modeling apparatus according to an embodiment of the present invention is a three-dimensional modeling apparatus that produces a coaxial three-dimensional modeled object using a light curable resin material that is cured by light, and includes a light source that emits light and the light source. A scanning unit that scans the emitted light along a predetermined direction, a pair of electrodes that are arranged at positions where the light scanned by the scanning unit is received, and an axis that extends the electrode along the predetermined direction. A drive unit that rotates as a rotation axis, and the liquid level of the photo-curing resin material coincides with the position of the rotation axis.

  A light source that emits light; a scanning unit that scans the light emitted from the light source along a predetermined direction; and a pair of electrodes that are arranged at positions to receive the light scanned by the scanning unit; A drive unit that rotates the electrode along an axis along the predetermined direction as a rotation axis, and is formed by a three-dimensional modeling apparatus in which the liquid surface of the photocurable resin material and the position of the rotation axis coincide with each other An insulating rod is also an aspect of this embodiment.

It is side surface sectional drawing in the electrode installation stage of the three-dimensional modeling apparatus in the 1st Embodiment of this invention. FIG. 3 is a top cross-sectional view (a), an AA ′ cross-sectional view (b), and a BB ′ cross-sectional view (c) at the modeling stage of the modeling initial stage of the three-dimensional modeling apparatus according to the first embodiment of the present invention. . It is a flowchart which shows the process in the case of formation of the three-dimensional structure in the 1st Embodiment of this invention. It is side surface sectional drawing in the modeling initial stage of the three-dimensional modeling apparatus in the 1st Embodiment of this invention. FIG. 3 is a top cross-sectional view (a), an A-A ′ cross-sectional view (b), and a B-B ′ cross-sectional view (c) of the three-dimensional modeling apparatus according to the first embodiment of the present invention at a middle stage of modeling. It is side surface sectional drawing in the modeling middle stage of the three-dimensional modeling apparatus in the 1st Embodiment of this invention. FIG. 3A is a top cross-sectional view (a), an A-A ′ cross-sectional view (b), and a B-B ′ cross-sectional view (c) of the three-dimensional modeling apparatus according to the first embodiment of the present invention in the middle stage of modeling. It is an insulated rod with a metal fitting of a 1st embodiment of the present invention. It is an insulation rod with a metal fitting of other embodiments of the present invention. It is an insulation rod with a metal fitting of other embodiments of the present invention. It is an insulation rod with a metal fitting of other embodiments of the present invention. It is side surface sectional drawing of the conventional three-dimensional modeling apparatus.

[1. First Embodiment]
Below, the three-dimensional modeling apparatus which is the 1st Embodiment of this invention is demonstrated using FIGS. The three-dimensional modeling apparatus of this embodiment produces a coaxial three-dimensional modeled object using a photo-curing resin material that is cured by laser light. In the production of the three-dimensional structure, laser light is emitted from a light source, and the laser light is scanned toward the photocurable resin material. There is a driving device at the scanning destination of the laser beam, and the driving device is provided with a rotating shaft along the scanning direction of the laser beam. A pair of electrodes are fixed on the rotating shaft of the driving device, and the position of the rotating shaft coincides with the liquid level of the photocurable resin material. The three-dimensional modeling apparatus forms a cylindrical body that becomes a core by curing the photocurable resin material by irradiating laser light between the electrodes. Thereafter, an uncured photo-curing resin material is attached to the surface of the cylindrical body, and this is cured to produce a three-dimensional structure.

[1-1. Basic configuration]
1 and 2 are configuration diagrams showing an outline of the three-dimensional modeling apparatus 1 of the present embodiment, FIG. 1 is a side sectional view at a modeling preparation stage, and FIG. 2 is a side sectional view at an initial modeling stage. is there. The three-dimensional modeling apparatus 1 of the present embodiment includes a light source, a scanning unit 2, a drive unit, a storage tank 4, and a resin thickness control body 5 in order to form a modeled object.

  The light source is light emitting means for emitting laser light 6 (not shown). As the light emitting means, a UV laser or a semiconductor laser emitting means can be used as long as the laser light 6 that can cure the photo-curing resin material can be emitted.

  The scanning unit 2 scans the laser light 6 emitted from the light source along a predetermined direction. The scanning means 2 is a rotational scanning type polygon mirror, a reciprocating peristaltic scanning type galvanometer mirror, or the like, and changes the path of the laser light 6 to the drive unit side by using the reflection of the mirror. Moreover, the place which the reflected laser beam irradiates is displaced by changing the angle of the mirror. The direction in which the scanning unit 2 scans the laser beam 6 is a direction along the rotation axis 31 of the driving unit described later.

  The drive unit rotates the pair of metal fittings 7 </ b> A and 7 </ b> B arranged in the storage tank 4 around the rotation shaft 31. The drive unit is arranged so that the liquid level of the cured resin material becomes the center line of the metal fittings 3A and 3B in the storage tank 4 in which the photocurable resin material 8 is placed. The two opposing metal fittings 7A and 7B rotate synchronously, and the photocurable resin material 8 is applied onto the photocurable resin body 7 cured between the metal fittings. The laser light 6 emitted from the light source by the scanning means 2 is irradiated by scanning the laser light 6 in the same direction as the central axis of rotation of the metal fittings 7A and 7B to cure the photo-curing resin material 8 as desired. A cylindrical material of the thickness of is shaped. The driving unit includes a holding unit 32 that holds the metal fittings 7A and 7B, and a driving force transmission unit 33 that transmits a driving force to the holding unit.

  The metal fittings 7A and B are arranged in the storage tank 4 as a pair. The metal fittings 7A and B are substantially columnar members having irregularities on the side surfaces, and even a rotating body having no space inside such as a combination of columns and spheres having different radii as shown in FIG. good. In addition, the metal fittings 7A and 7B are provided with fitting portions that are fitted to the holding portions 32 in part.

  The holding part 32 positions the metal fittings 7 </ b> A and 7 </ b> B at the light receiving part of the laser beam 6. The holding portion 32 is a fixture for the metal fittings 7A and 7B provided at the tip portion of the rod whose one of the end portions is located in the storage tank 4. The tips of the two rods are located in the storage tank 4, and the tips of the rods are located so as to face each other. That is, the two holding | maintenance parts 32 are located in the storage tank 4, and each holding | maintenance part 32 is arrange | positioned so that it may oppose. The central axis of the holding part 32 and the rod is the same as the rotation axis 31 of the drive part.

  The other end of the rod is connected to a drive source (not shown) that applies a rotational force to the rod. That is, this rod serves as a driving force transmission unit 33 that transmits a driving force from a driving source to the holding unit 32 and the metal electrodes 7A and 7B held by the holding unit 32. The driving force transmission unit 33 transmits a driving force that rotates the holding units 32 in synchronization with each other. That is, the pair of metal fittings 7 </ b> A and 7 </ b> B held by the holding unit 32 rotate around the rotation shaft 31 in the same direction and at the same speed.

  The storage tank 4 stores the photocurable resin material 8 therein, and the photocurable resin material 8 is filled in the storage tank 4 up to the same height as the position of the rotary shaft 31 of the drive unit. The storage tank 4 is connected to an apparatus (not shown) for controlling the liquid height of the photocurable resin material 8 and other storage tanks. The photocurable resin material 8 is a fluid having a predetermined viscosity that is cured by receiving the laser beam 6. Further, the photocurable resin material 8 may be mixed with inorganic fibers such as glass and engineering polymer fibers such as PPS.

  The resin thickness control body 5 controls the thickness of the uncured photocured resin material 8 that adheres to the surface of the cured photocured resin 9. As shown in FIG. 2, the resin thickness control body 5 is disposed with a predetermined gap at a position adjacent to between the metal fittings, and is uncured that adheres to the surface of the cured columnar photocurable resin 9. The adhesion thickness of the photo-curing resin material 8 is controlled.

  The resin thickness control body 5 is a substantially cylindrical member provided with metal fittings 7A and 7B and a concave portion matching the shape of the final molded product. The resin thickness control body 5 rotates about an axis 51 parallel to the rotation axis 31 of the drive unit. The cross section of the resin thickness control body 7 along the axis 51 is substantially rectangular, and includes two long sides and two short sides. One of the long sides of the rectangle in the cross section of the resin thickness control body 7 is provided with a notch that matches the outer shape of the metal fittings 7A and 7B and the molded object that has been hardened into a circular shape as a core. . Moreover, the other one of the long side portions is provided with a notch that matches the outer shape of the three-dimensional structure.

  The resin thickness control body 5 is configured to be able to change the position of the shaft 51 in accordance with the outer dimensions of the three-dimensional structure. By changing the position of the shaft 51, the distance between the rotating resin thickness control body 5 and the photocuring resin body 9 cured in a columnar shape and the photocuring resin body material 8 attached to the metal fittings 7A and 7B is adjusted. It becomes possible. In addition, the distance between the rotation shaft 31 and the shaft 51 of the drive unit can be changed.

[1-2. Action]
The outline of the three-dimensional modeling forming process in the three-dimensional modeling apparatus 1 of FIG. 3 having the above-described configuration is as follows. FIG. 3 is a flowchart showing the steps for producing a three-dimensional structure in the three-dimensional modeling apparatus 1, and includes the following steps.

(a) Metal fitting holding process
(b) Cylinder body forming step as a core
(c) Driving start process of the driving device
(d) Photo-curing resin formation process
(e) Removal process

  First, the metal electrodes 7A and 7B are held by the holding unit 32 of the driving unit (STEP01). When producing a three-dimensional structure using the three-dimensional structure forming apparatus 1, the laser beams 6A and 6B shown in FIG. 1 are made of metal so that the metal fittings 7A and 7B do not obstruct the shadow and prevent the resin from hardening. The cutting angle β ° of the metal fittings 7A and 7B satisfies the condition of β ° <α ° with respect to the light irradiation angle α °.

  Next, a central cylindrical body serving as a core is formed between the metal electrodes (STEP 02). As shown in FIG. 4, a laser beam 6 is scanned between the metal electrodes 7A and 7B to form a column-shaped cured photo-curing resin 9 that connects between the metal fittings 7A and 7B. At this time, as shown in FIG. 2a, the resin thickness control body 5 is positioned at a fixed interval in the vicinity of the rotation shaft 31 of the metal electrodes 7A and 7B on which the cylindrical body serving as a core is formed and the metal fittings 7A and 7B. .

  Thereafter, the metal fittings 7A and 7B are rotated synchronously (STEP03). Therefore, as shown in FIGS. 2b and 2c, the rotation direction B is the same in the central cylindrical body and the metal fitting 7B. As a result, the surface of the photocured resin body 9 cured in a cylindrical shape that has passed through the liquid surface of the photocured resin material 8 is covered with the thin uncured photocured resin material 8. Then, by further rotating the metal fittings 7A and 7B, the surface of the portion of the photocurable resin body 9 that does not pass through the photocurable resin material 8 is also covered with the thin uncured photocurable resin material 8. At this time, the photocuring in which the uncured photocured resin material 8 having a thickness between the liquid coating thickness control column 5 disposed on the liquid upper surface and the photocured resin body 9 cured in the columnar shape is cured in a columnar shape. It adheres to the resin body 9.

  Next, the laser beam 6 emitted from the light source and passed through the scanning means 2 irradiates the surface of the photocured resin body 9 cured in a columnar shape in the axial direction of the rotary shaft 31 at a certain interval (STEP 04). The irradiated laser beam 6 cures the uncured photocured resin material 8 attached to the surface of the photocured resin body 9 cured in a columnar shape.

  By repeating the rotation of the metal fittings 7A and 7B and the irradiation of the laser beam 6 (STEP 03 to 04), the diameter of the photo-curing resin body 9 cured in a cylindrical shape is increased as shown in FIGS. The photo-curing resin body 9 is also formed in the concave portions of the metal parts 7A and 7B. At this time, as shown in FIG. 5a, by moving the rotation shaft 51 of the resin thickness control body 5, the photocured resin body 9 cured in a columnar shape and the photocured resin body material attached to the metal fittings 7A and 7B. Control the thickness of 8. Thereby, the photocurable resin material 8 can be cured on the entire surface of the metal fittings 7A and 7B, and sufficient adhesion can be obtained.

  Furthermore, by repeating this procedure, as shown in FIG. 7, when the column of the photocurable resin body 9 has a desired diameter, the device is stopped and the metal fittings 7A and 7B at both ends are removed from the drive device. The insulating cylinder shown in FIG. 8 is completed (STEP 05).

  As described above, it is possible to continuously apply and cure the photocurable resin material 8 to the insulating columns having the metal fittings 7A and 7B at both ends. The three-dimensional structure formed according to the present embodiment can be formed at low cost, and can be joined to a metal electrode without machining the insulator portion, so that it becomes a highly reliable operation rod.

[3. effect]
According to the present embodiment having the configuration and operation as described above, the following effects can be obtained.

(1) In this embodiment, it has the outstanding effect that modeling time can be shortened when producing the coaxial three-dimensional structure 1 which attached the metal fittings 7A and 7B to both ends. Further, the amount of the photo-curable resin material 8 necessary for modeling is minimized, and there is an excellent effect that the entire apparatus can be reduced in size as compared with the related art. At the same time, an operation rod with high mechanical characteristics can be obtained.

(2) Conventionally, the insulator is screwed and joined to the screw portion of the metal fitting and fixed. However, in this embodiment, the insulator and the metal fitting can be joined without processing the insulator. Become. As a result, not only is there no influence of peeling, scratches, etc. that occur when processing an insulator, which is a problem when a large mechanical force is applied, but the processing cost and processing time are not required, and the cost merit is very large.

(3) Furthermore, since the insulator portion can be joined to the metal electrode without machining, a highly reliable operation rod can be manufactured. The metal incorporated in the insulator is not limited to the shape shown in FIG. 8 as long as it is a substantially cylindrical member having no cavity inside. For example, a rotating body obtained by rotating a substantially semicircle shown in FIG. 9, a rotating body obtained by rotating two substantially semicircles shown in FIG. 10, and a rotating figure obtained by rotating a substantially rectangular shape having a plurality of bending points shown in FIG. If it is a shape like a body or a metal fitting with irregularities, the same actions and effects as in this embodiment can be achieved.

(4) Moreover, in the three-dimensional modeling apparatus 1 of this embodiment, it is not necessary to add a support such as a three-dimensional modeled object support plate in the storage tank 4, and the photocurable resin material 8 in the storage tank 4. Therefore, it is not necessary to prepare a large storage tank. Furthermore, by forming the cross section of the storage tank 4 along the desired insulating cylinder, a modeling apparatus dedicated to the insulating cylinder is obtained, but the amount of the photocurable resin material 8 necessary for modeling can be minimized. .

(4) In the present embodiment, the coating thickness of the photocurable resin material 8 is set at a position adjacent to the cylindrical body formed by curing the photocurable resin material 8 until each portion of the cylindrical body has a predetermined thickness. The resin thickness control body 5 is adjusted. Thereby, the adhesion thickness of the uncured photocured resin material 8 adhering to the surface of the cured cylindrical photocured resin body 9 can be controlled.

(5) The resin thickness control body 5 of the present embodiment is a rotating body that rotates around an axis 51 that is parallel to the rotating shaft 31 of the drive unit. By rotating the resin thickness control body 5, it is possible to efficiently remove excess uncured photocured resin material 8 attached to the surface of the cured columnar photocured resin body 9. Therefore, it is possible to efficiently control the adhesion thickness of the uncured photocurable resin material 8.

(6) The resin thickness control body 5 of the present embodiment changes the position of the shaft 51 serving as the center of rotation according to the dimensions of the hardened cylinder. Thereby, the excess uncured photo-curing resin material 8 can be efficiently removed until the dimension of the cylindrical body becomes the dimension at the time of completion.

(7) In this embodiment, an inorganic polymer such as crystal, amorphous or fibrous glass, and an engineering polymer such as PPS are mixed in the photo-curing resin material 8 that is cured by the laser beam 6 emitted from the light source. Thereby, the intensity | strength and insulation performance of the three-dimensional structure to form can be improved. In particular, when a three-dimensional structure is used as an insulating rod, it is advantageous in terms of insulating performance.

[Other Embodiments]
In the present specification, an embodiment according to the present invention has been described. However, this embodiment is presented as an example, and is not intended to limit the scope of the invention. Specifically, various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

  For example, in the present embodiment, the light curable resin material 9 is formed by irradiating the light curable resin material 8 with the laser light 6, but the light for curing the light curable resin material 8 is not limited to the laser light, and the light curable resin is used. If the material 8 can be cured, the type can be appropriately selected.

  Further, the resin thickness control body 5 for controlling the thickness of the uncured photocured resin material 8 that adheres to the surface of the cured photocured resin body 9 has been described by taking a cylindrical rotating body as an example. The thickness control body 5 is not limited to a cylindrical rotating body. For example, the cylindrical body used as a core, and the rectangular flat plate which has the unevenness | corrugation matched with the metal metal fittings 7A and 7B may be sufficient. In addition, the resin thickness control body 5 may not be a rotating body as long as it can control the thickness of the uncured photocured resin material 8 that adheres to the surface of the cured photocured resin body 9. That is, the adhesion thickness of the uncured photo-curing resin material 8 can be controlled by arranging a flat control plate in the vicinity of the cylindrical body or the metal fittings 7A and 7B serving as the core.

DESCRIPTION OF SYMBOLS 1 ... Three-dimensional modeling apparatus 2 ... Scanning means 31 ... Rotating shaft 32 ... Holding part 33 ... Driving force transmission part 4 ... Storage tank 5 ... Resin thickness control body 51 ... Shaft 6 ... Laser beam 7A, 7B ... Metal fitting 8 ... Light Cured resin material 9 ... Photocured resin body 10 ... Substrate column 11 ... Control plate 12 ... Curable photocured resin body B ... Rotation direction by drive unit

Claims (7)

In a three-dimensional modeling apparatus that produces a coaxial three-dimensional structure using a light curable resin material that is cured by light,
A light source that emits light;
Scanning means for scanning the light emitted from the light source along a predetermined direction;
A pair of electrodes disposed at positions to receive the light scanned by the scanning means;
A drive unit that rotates the electrode about the axis along the predetermined direction as a rotation axis;
With
The three-dimensional modeling apparatus, wherein a liquid surface of the photo-curing resin material and a position of the rotation axis coincide with each other. Irradiating light between the pair of electrodes to cure the photocurable resin material to form a cylindrical body,
Applying the photocurable resin material of a predetermined thickness around the cylindrical body to the cylindrical body,
The three-dimensional modeling according to claim 1, wherein the photocurable resin material applied to the cylindrical body is cured by scanning light emitted from the light source in a predetermined direction by the scanning unit. apparatus.   A resin thickness control unit that adjusts the thickness of the photo-curing resin material applied to the cylindrical body until each portion of the cylindrical body has a predetermined size is provided at a position adjacent to the cylindrical body. The three-dimensional modeling apparatus according to claim 2.   The three-dimensional modeling apparatus according to claim 3, wherein the resin thickness control unit is a rotating body that rotates about an axis parallel to a rotation axis of the driving unit.   The three-dimensional modeling apparatus according to claim 4, wherein an axis serving as a center of rotation of the resin thickness control unit changes a position according to a dimension of the cylindrical body.   6. The photo-curing resin material that is cured by light emitted from the light source is mixed with crystal, amorphous, or fibrous glass, and / or a PPS engineering polymer. The three-dimensional modeling apparatus according to any one of the above.   The insulating rod which arrange | positioned the metal electrode in both ends and was modeled with the three-dimensional manufacturing apparatus described in Claims 1-6.

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