JP2015000531A - Three-dimensional shaping apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-dimensional shaping apparatus which allows a base contact surface of a three-dimensional object to be formed in an intended shape without the base being deformed due to shrinkage during cooling curing when the three-dimensional object is shaped by melting thermoplastic resin at high temperature and laminating it.SOLUTION: A disclosed three-dimensional shaping apparatus includes: a planar base part on which an object is placed indirectly; a base plate part 6 which is removably mounted on the base part and on which the object is placed directly; and rail-like plate pressing parts which are installed at right and left ends of the base part and secures right and left ends of the base plate part mounted on the base part. The base plate part is configured with a base plate upper part 8 formed of a resin plate member as an upper layer and with a base plate lower part 10 formed of a metal plate member as a lower layer. In addition, the base plate part has on its right and left side faces rail locking groove mechanisms 12 which are locked to the rails of the plate pressing parts to secure the base plate part onto the base part.

Description

  The present invention relates to an apparatus for forming a three-dimensional structure by melting and laminating a thermoplastic resin at a high temperature, and more particularly to a technique of a part serving as a base on which the structure being manufactured is placed.

  In recent years, a three-dimensional modeling apparatus that can easily mold a three-dimensional modeled object, a so-called 3D printer, has been popularized. When a 3D modeling apparatus molds a 3D model, there are various molding methods. Here, a 3D model is obtained by melting and laminating a thermoplastic resin such as ABS (Acrylonitrile-Butadiene-Styrene) resin at a high temperature. Pay attention to the molding method of molding

  Some apparatuses for forming a three-dimensional structure using the above-described forming method use a resin plate-like member at a site to be a base on which the structure being manufactured is placed. In such an apparatus, after the resin plate-like member is used a plurality of times, a new resin plate-like member is replaced every time the component life comes.

  However, in the prior art as described above, the volume of the thermoplastic resin is reduced at the stage where the thermoplastic resin as the material of the three-dimensional structure is cooled and cured, and the base resin is made by the force at the time of the shrinkage. The plate member is deformed. And in connection with it, there existed a problem that the grounding surface (bottom surface) with the base of a three-dimensional structure will deform | transform. Specifically, as the thermoplastic resin, which is the material, contracts, the base resin plate-like member is deformed into a convex shape, and the bottom of the three-dimensional structure is also deformed into a convex shape. There was a point.

  Therefore, in the present invention, in view of the above-mentioned problems of the prior art, when a three-dimensional structure is formed by melting and laminating a thermoplastic resin at a high temperature, the base grounding surface of the three-dimensional structure is formed in an intended shape. The purpose is to propose a three-dimensional modeling apparatus that can be used.

  One form of the disclosed three-dimensional modeling apparatus is a three-dimensional modeling apparatus that forms a three-dimensional model by melting and laminating a thermoplastic resin at a high temperature, and discharging the thermoplastic resin that is a material of the three-dimensional model. A two-dimensionally shaped modeling head unit, and a flat base that operates in the vertical direction perpendicular to the two-dimensional plane in which the modeling head unit operates and indirectly places the three-dimensional modeled object. And a base plate part that is detachably installed on the base part and directly places the three-dimensional structure, and the base that is installed on the left and right ends of the base part and is installed on the base part A three-dimensional modeling apparatus having rail-shaped plate holding portions for fixing the left and right ends of the plate portion, wherein the base plate portion is made of a metal plate member, and the upper portion of the base plate is made of a metal plate. Plate member The lower part of the base plate is configured as a lower layer, and the left and right side surfaces of the base plate part are engaged with the rails provided in the plate presser part, and the base plate part is fixed on the base part. It has the groove part for rail locking which is this groove-shaped mechanism.

  In addition to the above configuration, one form of the disclosed three-dimensional modeling apparatus has a quadrangular shape of the upper part of the base plate and the lower part of the base plate, and the upper part of the base plate and the lower part of the base plate are at least It is fixed near the vertex of the quadrangle, near the midpoint of the side of the quadrangle, and near the intersection of the diagonal lines of the quadrangle.

In addition to the above configuration, one form of the disclosed three-dimensional modeling apparatus is that the fixing means between the upper part of the base plate and the lower part of the base plate is a screw, and the head of the screw is the surface of the upper part of the base plate. It is characterized by being positioned lower than.
In addition to the above configuration, one form of the disclosed three-dimensional modeling apparatus is characterized in that a plurality of holes are uniformly provided on the entire surface of the upper portion of the base plate.
Moreover, one form of the disclosed three-dimensional modeling apparatus is characterized in that, in addition to the above configuration, the material of the metal plate member is an aluminum alloy.

  The disclosed three-dimensional modeling apparatus can mold the base grounding surface of the three-dimensional structure in an intended shape when the three-dimensional structure is formed by melting and laminating a thermoplastic resin at a high temperature.

It is a front view of the three-dimensional modeling apparatus which concerns on this Embodiment. It is a top view of the three-dimensional modeling apparatus which concerns on this Embodiment. It is a front view of the base part which concerns on this Embodiment. It is a top view of the base plate part which concerns on this Embodiment. It is a side view of the base plate part which concerns on this Embodiment. It is a front view (back view) of the base plate part which concerns on this Embodiment.

DESCRIPTION OF EMBODIMENTS Embodiments for carrying out the present invention will be described with reference to the drawings.
(Structure of 3D modeling apparatus according to this embodiment)

  The structure of the three-dimensional modeling apparatus (hereinafter simply referred to as “modeling apparatus”) 1 according to the present embodiment will be described with reference to FIGS. The modeling apparatus 1 melts a thermoplastic resin 22 (hereinafter simply referred to as “material”), which is a material, at a high temperature and laminates the melted material 22, thereby forming a three-dimensional structure (hereinafter simply referred to as “modeled object”). .) Is a device for molding 20. For example, the material 22 is preferably an ABS resin or the like.

The modeling apparatus 1 is configured to manufacture the modeled object 20 by once melting the material 22 at a high temperature and then curing the material 22 discharged to an intended position. At that time, since the material 22 has a property that the volume shrinks in the process of temperature change from high temperature to room temperature, there is a problem in that the pedestal part of the modeling apparatus with which the bottom surface of the modeled object 20 contacts is deformed. there were. Then, since the bottom surface of the modeled object 20 is also deformed with the deformation of the pedestal part of the modeling apparatus, there has been a problem that the final shape of the modeled object 20, particularly the shape of the bottom surface, is not the intended shape.
Therefore, the modeling apparatus 1 is configured so that the shape of the modeled object 20, particularly the shape of the bottom surface, becomes the intended shape.
As shown in FIGS. 1 to 6, the modeling apparatus 1 includes a modeling head unit 2, a base unit 4, a base plate unit 6, and a plate pressing unit 16.

  As shown in FIG. 1, the modeling head unit 2 is a part that discharges a thermoplastic resin that is the material 22 of the modeled object 20 and operates in a two-dimensional plane. As shown in FIG. 2, the material 22 is supplied to the modeling head unit 2, and the material 22 is melted at a high temperature in the modeling head unit 2 and discharged to form the modeled object 20. In addition, the well-known technique regarding a three-dimensional modeling apparatus is applied to the configuration and control method of the modeling head unit 2.

  As shown in FIG. 1, the base portion 4 is a flat plate that moves in the vertical direction perpendicular to the two-dimensional plane on which the modeling head portion 2 operates and places the modeling object 20 via the base plate portion 6. In addition, the structure of the base part 4, a control method, etc. apply the well-known technique regarding a three-dimensional modeling apparatus.

  As shown in FIGS. 1 and 3, the plate presser 16 is installed at the left and right ends of the base portion 4 and at a position where the plate holder 16 is floated at a predetermined height, and has a rail shape (for fixing both the left and right ends of the base plate portion 6 described later). (Nail-like) mechanism. Here, by inserting a plate-like member having a predetermined thickness on the base portion 2 and below the plate presser portion 16, the plate-like member can be used as a pedestal portion of the molded article 20. However, the problem of “warping of the bottom surface” as described above occurs.

  The base plate part 6 is detachably installed on the base part 2 and places the modeled object 20 directly, that is, a part serving as a base for the modeled object 20. 4 to 6, the base plate portion 6 includes a base plate upper portion 8, a base plate lower portion 10, a rail locking groove portion 12, and plate fixing means 14.

  The base plate upper part 8 is a part made of a resin plate member such as an electronic circuit board and serving as the surface of the base plate part 6. The material 22 is discharged onto the base plate upper part 8 by the modeling head unit 2, and the modeled object 20 is directly placed on the base plate upper part 8.

  As shown in FIG. 4, the base portion upper plate 8 has a hole-like mechanism uniformly on the surface (displayed with small black dots for convenience in FIG. 4). Since the hole-shaped mechanism is provided, the base portion rate upper portion 8 can improve the adhesion state of the material 22 discharged from the modeling head portion 2.

  The base plate lower part 10 is formed of a metal plate member such as an aluminum die cast, for example, and is a member disposed in the lower layer of the base plate upper part 8 and plays a role of improving the strength against warping of the base plate part 6. It is a member.

  Moreover, as shown in FIG. 4, it is preferable that the base plate upper part 8 and the base plate lower part 10 have the same quadrangle in the planar shape (the shape seen from above). The base plate upper portion 8 and the base plate lower portion 10 are at least near the vertex of the rectangle (four points), near the middle point of each side of the rectangle (four points), and near the intersection of two diagonal lines related to the rectangle It is fixed at (1 point). This is because the base plate upper part 8 and the base plate lower part 10 are firmly fixed so that the center part does not rise.

  Further, a screw is used as the fixing means 14 between the base plate upper part 8 and the base plate lower part 10, but the head of the screw is located at a position lower than the surface of the base plate upper part 8 (the entire screw is buried in the base plate upper part 8. Installed). This is to prevent contact between the modeling head unit 2 and the fixing means 14.

  As shown in FIGS. 5 and 6, the rail locking groove portion 12 is a groove-shaped mechanism provided on the left and right side surfaces of the base plate portion 6, and is fitted into the rail 18 provided in the plate pressing portion 16. This is a mechanism for locking and fixing the base plate portion 6 to the plate presser portion 16 (base portion 4). The base plate portion 6 is configured such that the left and right rail locking groove portions 12 are aligned with the rails 18 of the corresponding plate presser portions 16 and inserted into the base portion 4 from the front of the modeling apparatus 1 and attached to the modeling apparatus 1. .

  Thus, the modeling apparatus 1 firmly overlaps the resin plate member 8 and the metal plate member 10 and improves the strength against warping of the base plate portion 6 by the base plate lower portion 10. Therefore, even if the modeling apparatus 1 contracts in the cooling process of the material 22, the pedestal part of the modeling apparatus 1 is not deformed, and the bottom surface of the modeled object 20 is not affected by the deformation of the pedestal part. Therefore, the modeling apparatus 1 can make the shape of the molded article 20, particularly the shape of the bottom surface, the intended shape. The base plate upper part 8 is replaced with another new base plate upper part 8 every time it becomes impossible to obtain the necessary performance as a pedestal of the modeled object 20. On the other hand, there is no need to replace the base plate lower part 10.

Further, in order to fulfill the above function, the material of the base plate lower part 10 may be other than metal as long as the strength against the warp of the base plate lower part 10 is stronger than the contracting force in the cooling process of the material 22. On the other hand, if the strength against warping of the base plate lower part 10 is weaker than the contracting force in the cooling process of the material 22, even if the material is metal, it is not suitable as the base plate lower part 10.
(Usage method of 3D modeling apparatus according to this embodiment)

  A method of using the modeling apparatus 1 will be described with reference to FIGS. As a first procedure, the base plate upper portion 8 and the base plate lower portion 10 are fixed using screws 14 to set the base plate portion 6. At this time, care should be taken so that the head of the screw 14 does not protrude from the surface of the base plate upper portion 8.

  Next, as a second procedure, from the front direction of the modeling apparatus 1, the rail locking groove 12 on the side of the base plate part 6 is fitted and inserted into the plate presser part 16, and the base plate part 6 is installed on the base part 4. To do.

  Now that the preparation for operating the modeling apparatus 1 is completed, according to the known technology of the three-dimensional modeling apparatus, for example, three-dimensional data is transferred from the information processing apparatus to the modeling apparatus 1, and the modeling head unit 2 is transferred according to the transferred data. And the modeling object 20 is manufactured on the base plate part 6 by controlling the base part 4 or the like.

  Although the embodiment of the present invention has been described in detail above, the present invention is not limited to the specific embodiment, and various modifications are possible within the scope of the gist of the present invention described in the claims.・ Change is possible.

DESCRIPTION OF SYMBOLS 1 3D modeling apparatus 2 Modeling head part 4 Base part 6 Base plate part 8 Base plate upper part 10 Base plate lower part 12 Rail locking groove part 14 Plate fixing means (screw)
16 Plate holder 18 Rail 20 Three-dimensional structure 22 Thermoplastic resin (material of three-dimensional structure)

As shown in FIG. 4, the base plate upper part 8 has a hole-like mechanism uniformly on the surface (shown with small black dots for convenience in FIG. 4). Since the hole-shaped mechanism is provided, the base plate upper part 8 can improve the adhesion state of the material 22 discharged from the modeling head unit 2.

Claims (5)

In the three-dimensional modeling apparatus that forms a three-dimensional structure by melting and laminating a thermoplastic resin at a high temperature,
A molding head portion that discharges the thermoplastic resin that is a material of the three-dimensional structure and operates in a two-dimensional plane;
A plate-like base portion that operates in the vertical direction orthogonal to the two-dimensional plane in which the modeling head unit operates, and that indirectly places the three-dimensional structure,
A base part plate part that is detachably installed on the base part and directly places the three-dimensional structure,
A three-dimensional modeling apparatus having rail-shaped plate pressing portions that are installed at the left and right ends of the base portion and fix the left and right ends of the base portion plate portion installed on the base portion,
The base plate portion is configured with the upper portion of the base plate composed of a resin plate member as the upper layer, and the lower portion of the base plate composed of the metal plate member as the lower layer, and on the left and right side surfaces of the base plate portion, A three-dimensional modeling apparatus comprising a rail locking groove portion that is a groove-like mechanism for locking the base plate portion on the base portion and locking the base plate portion on the rail. The shape of the upper part of the base plate and the lower part of the base plate is a quadrangle,
The upper part of the base plate and the lower part of the base plate are fixed at least near the apex of the quadrangle, near the midpoint of the side of the quadrangle, and near the intersection of diagonal lines of the quadrangle. The three-dimensional modeling apparatus described. The fixing means between the base plate upper part and the base plate lower part is a screw,
The three-dimensional modeling apparatus according to claim 2, wherein a head portion of the screw is positioned lower than a surface of the upper portion of the base plate.   The three-dimensional modeling apparatus according to any one of claims 1 to 3, wherein a plurality of holes are uniformly provided on the entire surface of the upper portion of the base plate. The three-dimensional modeling apparatus according to any one of claims 1 to 4, wherein a material of the metal plate member is an aluminum alloy.

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