JP6015247B2 - Three-dimensional object molding method and apparatus - Google Patents

Description

  The present invention relates to a three-dimensional object molding method and apparatus, and more specifically, a three-dimensional object molding method in which a planar sheet is pressed against a three-dimensional mold frame having a required shape, and the sheet is formed into a three-dimensional object having a required shape. It relates to the device.

As a conventional method for forming a three-dimensional object, for example, a flat sheet is pressed against a three-dimensional mold frame (female) having a required shape by using vacuum forming, thereby forming the sheet into a three-dimensional object having a required shape. Is known (Patent Document 1).
In this molding method, a three-dimensional mold having a required shape to be a female mold is manufactured in advance, and the opening side of the female mold is sealed with the sheet. When the sheet is heated and softened in this state, the softened sheet is brought into close contact with the inner surface of the female mold by introducing a negative pressure into the three-dimensional mold frame. Thereafter, when the sheet is cooled and hardened, the sheet is separated from the female mold to obtain a three-dimensional object having a required shape following the inner shape of the female mold.

JP-A-5-297804

In the conventional molding method described above, the female mold has a shape that follows the entire three-dimensional object to be manufactured, and the entire three-dimensional object is manufactured by one vacuum forming. For this reason, in order to manufacture a three-dimensional object, a large-sized female mold that can form the whole three-dimensional object at one time is required, which is disadvantageous in that it is costly. Such a defect becomes more prominent as the three-dimensional object becomes larger.
For example, when manufacturing a three-dimensional map as a three-dimensional object, a plane map such as a mountain or a road is printed in advance on a flat sheet, and this is in close contact with the inner surface of the female mold. In addition, it is difficult to accurately align the printing position of the planar map and the predetermined position of the female mold, and the positional deviation is particularly remarkable in a large three-dimensional map.
In view of such circumstances, the present invention provides a novel three-dimensional object molding method and apparatus that does not require a large three-dimensional frame even when a large three-dimensional object is manufactured.

That is, the three-dimensional object molding method according to claim 1 is a three-dimensional object molding method in which a planar sheet is pressed against a three-dimensional frame of a required shape, and the sheet is formed into a three-dimensional object of a required shape,
The sheet is divided into a plurality of molding areas, and one of the molding areas is pressed against a three-dimensional mold frame that matches the three-dimensional shape required for the molding area, and the molding area is formed into a three-dimensional shape that follows the three-dimensional mold frame. Next, the shape of the three-dimensional mold is changed to a shape suitable for the three-dimensional shape required for the next molding area, and the three-dimensional mold is moved relative to the next molding area to be molded. Then, the molding area to be molded next is pressed against the three-dimensional mold frame to form the molding area into a three-dimensional shape following the three-dimensional mold frame, and this is repeated for each molding area, The three-dimensional shape is made continuous with each other, and the entire sheet is formed into a three-dimensional object having the required shape.
According to a second aspect of the present invention, there is provided a three-dimensional object forming apparatus comprising: a sheet holding means for holding a flat sheet formed into a three-dimensional shape; a plurality of linear bodies each provided with a tip portion that can be moved in and out of the forming head; Driving means for moving the shape members forward and backward to form a three-dimensional mold frame formed by the leading end portions of the linear members at the leading end portion of the forming head, and the sheet holding means and the forming head parallel to the surface of the sheet. A relative movement means for relatively moving the sheet in a desired direction; a sheet held by the sheet holding means; and a three-dimensional frame formed at the tip of the forming head are brought into pressure contact with each other, so that the sheet follows the three-dimensional mold frame. Pressure control means for forming a three-dimensional shape, a plurality of molding areas formed by partitioning the sheet, and a control device that stores the respective three-dimensional shapes required for each molding area,
The control device controls the relative moving means to move the forming head to a predetermined forming area, and controls the driving means to add a three-dimensional mold frame formed by the tip of each linear body to the forming area. Forming a conformable three-dimensional mold frame, further controlling the press contact means to press the three-dimensional mold frame against the forming area of the sheet, and forming the three-dimensional shape of the sheet following the three-dimensional mold frame The molding is repeated for each molding area, and the three-dimensional shape of the adjacent molding areas is made continuous to form the entire sheet into a three-dimensional object having a required shape.

In the first and second aspects of the invention, the entire sheet is not formed into a three-dimensional object having a required shape at once, but the sheet is divided into a plurality of forming areas, and the divided small forming areas are three-dimensionally formed. A small three-dimensional shape is formed by press-contacting to the formwork, and this is repeated for each forming area. Finally, the three-dimensional shape of the adjacent forming areas is made mutually continuous to form the entire sheet into a three-dimensional object of the required shape. Like to do.
Therefore, as a three-dimensional formwork, there is no need for a large three-dimensional formwork that forms the entire sheet into a three-dimensional object of the required shape at once. As a result, the cost can be reduced as a result rather than preparing one large three-dimensional formwork.
In particular, in the invention of claim 2, by moving each linear body forward and backward by the driving means, a three-dimensional mold frame of various shapes can be formed at the distal end portion of the forming head by the distal end portion of each linear body. Therefore, the entire sheet can be formed into a three-dimensional object having a required shape with one or a small number of forming heads, so that further cost reduction can be achieved.
Further, when a planar map such as a mountain or a road is printed in advance on a planar sheet as in the case of manufacturing a three-dimensional map as a three-dimensional object, for example, according to the present invention, a small molding area is formed into a three-dimensional frame. Since a small three-dimensional shape is formed by press-contacting to a three-dimensional mold frame, compared to using a three-dimensional mold frame with a large alignment when pressing a plane map such as a mountain or road in a small molding area against the three-dimensional mold frame Thus, it becomes easy and a more accurate three-dimensional map can be manufactured.

The perspective view which shows the Example of this invention The perspective view which shows the drive means 24 Sectional drawing which shows the shaping | molding state of the sheet | seat 1 Plan view showing molding area S Sectional drawing which shows 2nd Example of this invention Sectional drawing which shows 3rd Example of this invention Sectional drawing which shows 4th Example of this invention The perspective view which shows 5th Example of this invention. The perspective view which shows the three-dimensional object 60 shape | molded by the three-dimensional formwork 58 of 5th Example.

In the following, the present invention will be described with reference to the illustrated embodiment. In FIG. 1, a rectangular planar sheet 1 formed into a three-dimensional shape is held horizontally by sheet holding means 2 and stretched horizontally. The sheet 1 is made of a thermoplastic resin such as polystyrene resin or PET resin, softened by applying heat, and cured by cooling. Further, the upper surface of the sheet 1 is a printing surface on which a map or the like is printed in advance.
The sheet holding means 2 includes a square frame 3 that matches the size of the sheet 1, and the clamp means 4 provided on each side of the frame 3 can hold the four sides of the sheet 1. is there.

The frame body 3 of the sheet holding means 2 is moved by the relative movement means 7 in the XY directions orthogonal to each other in the horizontal plane. By the movement of the frame body 3, a molding head 11A described later is obtained. , 11B, the sheet 1 can be relatively moved in a direction parallel to the surface thereof. In other words, the forming heads 11 </ b> A and 11 </ b> B can be moved relative to the sheet 1 in a direction parallel to the surface of the sheet 1.
The relative moving means 7 is constituted by a conventionally known XY table, which is simplified in FIG. 1, but includes an X direction driving motor 8 for moving the frame 3 in the X direction, and a Y direction. And a Y-direction driving motor 9 to be moved. Each of the driving motors 8 and 9 can drive the screw shaft 10 to rotate in the forward and reverse directions, and the frame body 3 is attached via a nut member (not shown) fixed to the frame body 3 side. Each can be moved in the XY direction.
The relative moving means 7 may move the forming heads 11A and 11B in the X-Y direction instead of moving the sheet 1, or move the frame 3 in the X direction, 11B may be moved in the Y direction.

In the illustrated embodiment, the forming heads 11A and 11B are arranged above and below the sheet 1 to form a female three-dimensional mold 12A at the tip of the upper forming head 11A and to form the lower part. A male three-dimensional frame 12B can be formed at the tip of the head 11B.
The sheet 1 sandwiched between the compatible molds 12A and 12B is formed into a three-dimensional shape following the three-dimensional molds 12A and 12B by pressing the compatible molds 12A and 12B with each other by the pressing means 13. It is made to be able to.
The pressure contact means 13 includes a drive motor 14A for raising and lowering the upper molding head 11A and a drive motor 14B for raising and lowering the lower molding head 11B. Each of the drive motors 14A and 14B has a screw shaft 15 in a positive direction. Conversely, it can be rotationally driven. Although simplified in FIG. 1, the screw shafts 15 can be moved up and down through the nut members (not shown) fixed to the molding heads 11A and 11B. It is.

As shown in FIG. 2, each molding head 11A, 11B includes a cylindrical housing 21, and the distal end side of each housing 21 is a tapered portion 21A constricted in a conical shape. The front end surface of each taper portion 21A is formed in a plane so as to be parallel to the plane of the sheet 1, and a large number of guide holes 21B are arranged and formed so as to be substantially circular as a whole.
Each guide hole 21B is engaged with a distal end portion of a flexible linear body 22 so as to be able to protrude and retract, and each linear body 22 is moved forward and backward separately to guide the hole in each linear body 22. The amount of protrusion from 21B is adjusted separately so that the three-dimensional frame 12A, 12B (see FIGS. 1 and 3) can be formed by the tip of each linear body 22, respectively. The tip of each linear body 22 is formed in a smooth hemispherical shape.

For example, 109 of the linear bodies 22 are arranged close to each other so as to form a circular shape with a diameter of 10 mm, for example, and the moving distance of each linear body 22 is set to 10 mm, for example. Thus, when a conical female mold is formed, the protruding amount of the surrounding linear body 22 is the largest, and the protruding amount of the central linear body 22 is the smallest so that the line between them is By gradually changing the protruding amount of the shape body 22, it is possible to form the three-dimensional frame 12A having a smooth conical recess having a maximum depth of 10 mm.
In this embodiment, the upper and lower molding heads 11A and 11B have the same configuration. When the upper three-dimensional mold 12A is formed as a female mold having a conical recess, the lower three-dimensional mold 12B is the female mold. In order to fit the mold, it can be formed as a male mold having a conical convex portion. Therefore, if the sheet 1 is sandwiched between the compatible molds 12A and 12B, the sandwiched portion of the sheet 1 can be formed into a conical solid shape.

The end portions of the linear bodies 22 are connected to drive modules 25 constituting the driving means 24, respectively, so that the linear bodies 22 can be moved forward and backward separately by the drive modules 25. The driving means 24 are respectively provided in a rectangular housing 26 (FIG. 1) provided continuously with the cylindrical housing 21.
Although not shown in the drawing, the linear bodies 22 are guided to advance and retreat by guide holes provided at a plurality of locations in the longitudinal direction, and the sheet 1 is pressed against the leading end of each linear body 22. In this case, it is considered that the tip of each linear body 22 is not retracted by the pressure.
Each of the drive modules 25 includes a drive motor 27 and a screw shaft 28 that is rotated forward and backward by the drive motor. A nut member (not shown) provided on the drive member 29 is screwed to each screw shaft 28. Yes. Each drive member 29 is moved forward and backward along the rail 30, and the end portion of the linear body 22 is connected to each drive member 29.
Therefore, each drive motor 29 can be moved forward and backward by rotating the screw shaft 28 forward and backward by each drive motor 27, so that each linear body 22 can be moved forward and backward independently. It is.

Further, as shown in FIG. 1, heating means 31 for heating the required position of the sheet 1 is provided. In the present embodiment, the heating means 31 includes a blower 32 for feeding hot air and a heating passage 33 such as a flexible pipe for guiding the hot air from the blower 32.
The leading end of the heating passage 33 is attached to the upper forming head 11A (see FIG. 3), and hot air is blown toward the sheet 1 in the vicinity of the three-dimensional mold 12A formed at the leading end of the forming head 11A. Thus, the portion of the sheet 1 formed by the three-dimensional mold 12A can be softened.

Further, a control device 35 is provided. The control device 35 includes drive motors 8 and 9 for the relative movement means 7, drive motors 14A and 14B for pressure contact means, each drive motor 27 for the drive means 24, and The blower 32 of the heating means 31 can be controlled.
The control means 35 receives and stores the three-dimensional shape of a three-dimensional object as a finished product formed on the sheet 1, and the control device 35 is formed at the tip of the forming heads 11A and 11B. According to the size of the three-dimensional molds 12A and 12B, as shown in FIG. 4, the sheet 1 is partitioned into a plurality of molding areas S and stored. In the embodiment shown in FIG. 4, each molding area S is formed in a square shape that is inscribed in a circle R formed by the outlines of a large number of linear bodies 22.
Further, the control means 35 calculates and stores the respective three-dimensional shapes required for each molding area S from the three-dimensional shape as the finished product, and also forms the highest point from the three-dimensional shape as the finished product. While selecting the area S, the molding area S used as the lowest position is selected, and the processing order of each molding area S is memorize | stored based on them.

In the above configuration, when the planar sheet 1 is formed into a required three-dimensional object, the sheet 1 is first stretched on the sheet holding means 2.
When the sheet 1 is stretched on the sheet holding means 2 and a molding process start command is given to the control device 35, the control device 35 first selects the molding area S1 (see FIG. 4) which is the highest location. Is the first molding zone S1. When the first molding area S1 is selected, the control device 35 controls the drive motors 8 and 9 of the relative moving means 7 to move the frame 3 in the XY direction, and relatively moves the molding head 11A. , 11B is moved to the position of the molding area S1 to be processed first.
When the molding heads 11A and 11B are moved to the position of the molding zone S1 to be processed first, the blower 32 of the heating means 31 is activated to heat and soften the molding zone S1.

At the same time, the control device 35 controls each drive motor 27 of the drive means 24 to mold the three-dimensional mold 12A of the upper molding head 11A into a female mold that conforms to the three-dimensional shape required for the molding area S1. To do. At this time, since a part of the linear body 22 forming the three-dimensional mold 12A protrudes to the molding areas S2 to S9 adjacent to the molding area S1 (see FIG. 4), the adjacent molding areas S2 to S9. Naturally, the position of the linear body 22 that protrudes is controlled to a protruding position suitable for the three-dimensional shape of each of the adjacent molding sections S2 to S9.
Further, the three-dimensional mold 12B of the lower molding head 11B is molded into a male mold suitable for the three-dimensional shape required for the molding area S1, in the same manner as the three-dimensional mold 12A of the upper molding head 11A. .

In this way, when the three-dimensional molds 12A and 12B of the upper and lower molding heads 11A and 11B are controlled to shapes that conform to the three-dimensional shape required for the molding area S1, and the sheet 1 in the molding area S1 is softened. The control device 35 controls the drive motors 14A and 14B of the pressure contact means to hold the sheet 1 between the compatible body molds 12A and 12B.
Thereby, the molding area S1 is molded into a three-dimensional shape following the three-dimensional shape of the compatible body molds 12A and 12B.
If it will be in this state, the said control apparatus 35 will control the drive motors 14A and 14B of a press-contact means, and will separate the compatible body formwork 12A and 12B.

Next, the control device 35 selects a molding area S2 to be the second processing point. In the example shown in FIG. 4, the molding area S <b> 2 that is the second processing point is adjacent to the first molding area S <b> 1, but this is not necessarily the case, and may be at a distant position.
When the second molding section S2 is selected, the control device 35 controls the drive motors 8 and 9 of the relative movement means 7 to move the frame 3 in the XY direction in the same manner as described above. The molding heads 11A and 11B are relatively moved to the position of the molding area S2 to be processed second.
During this time, the control device 35 controls the respective drive motors 27 of the drive means 24 so that the three-dimensional molds 12A and 12B of the upper and lower molding heads 11A and 11B conform to the three-dimensional shape required for the molding area S2. Mold into shape. Even in this case, since a part of the linear body 22 forming the three-dimensional mold frames 12A and 12B protrudes to the molding area adjacent to the molding area S2, the linear body protrudes to the adjacent molding area. As a matter of course, the position control is performed on the projecting position corresponding to the three-dimensional shape of each adjacent molding area.

Then, when the three-dimensional molds 12A and 12B of the upper and lower molding heads 11A and 11B are controlled to shapes that conform to the three-dimensional shape required for the molding area S2, and the sheet 1 in the molding area S2 is softened, the above control is performed. The apparatus 35 controls the drive motors 14A and 14B of the press contact means 13 to hold the sheet 1 between the compatible body molds 12A and 12B.
As a result, the molding section S2 is molded into a three-dimensional shape following the three-dimensional shape of the compatible body molds 12A and 12B, and the control device 35 subsequently controls the drive motors 14A and 14B of the pressure contact means to achieve both. The body frames 12A and 12B are separated from each other.
Thereafter, the above-described operation is repeated, and all the forming sections S are sequentially formed into a required three-dimensional shape, whereby the three-dimensional shapes of the adjacent forming sections are mutually continuous, and the entire sheet 1 is a finished product. A three-dimensional object having a certain required shape is formed.

In this embodiment, the three-dimensional molds 12A and 12B are shaped so as to form the respective three-dimensional areas S into the required three-dimensional shapes while overlapping the boundary portions of the adjacent molding areas S. The finished product can be obtained. However, it is not always necessary to mold the molding sections S while overlapping each other. For example, if the array of a large number of linear bodies 22 is square, the overlapped portion can be eliminated and a finished product can be obtained more quickly.
Further, in this embodiment, a three-dimensional shape as a finished product is input to the control device 35, and the control device 35 divides and forms the sheet 1 into a plurality of molding zones S, and each of the molding zones S is obtained for each of the molding zones S. However, the present invention is not limited to this, and may be input manually.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, the upper female three-dimensional molding 12A in the first embodiment is omitted, and instead, the lower end of the upper molding head 11A. Further, an elastic member 41 such as silicon rubber having heat resistance is provided.
Other configurations are the same as those of the first embodiment, and the same or corresponding parts are denoted by the same reference numerals as those of the first embodiment.
In this embodiment, the sheet 1 is sandwiched between the lower three-dimensional frame 12B and the upper elastic member 41 by the press contact means 13, and at this time, the elastic member 41 elastically deforms the sheet 1 with the three-dimensional frame. 12B is pressed, and the forming area S of the sheet 1 is formed into a three-dimensional shape following the three-dimensional shape of the three-dimensional mold 12B.
According to such a configuration, the drive means 24 for driving the linear body 22 need only be provided on the lower side of the sheet 1, so that the configuration can be simplified. Further, since the surface of the sheet on the elastic member 41 side is hardly scratched, if this surface is used as the surface side of the finished product, the risk of impairing aesthetics can be reduced.
Of course, the three-dimensional molding 12B and the elastic member 41 may be arranged upside down.

FIG. 6 shows a third embodiment of the present invention. In the second embodiment, the elastic member 41 presses the sheet 1 against the three-dimensional frame 12B. The sheet 1 is pressed against the three-dimensional frame 12B using a vacuum pressure).
That is, in this embodiment, the upper molding head 11A is omitted, and the lower molding head 11B surrounds the three-dimensional mold 12B to form a sealed space 43 therein, and has a ring-like elastic sealing member having elasticity. 44 is provided. The elastic sealing member 44 is brought into close contact with the lower surface of the sheet 1 when the lower three-dimensional frame 12B is raised toward the sheet 1 by the drive motor 14B of the pressure contact means 13, and the inside of the ring-shaped sealing member 44 The sealed space 43 can be formed.
A tip portion of a negative pressure passage 45 is opened inside the seal member 44, and the negative pressure passage 45 communicates with a negative pressure source 46.
Accordingly, if a vacuum pressure is introduced into the sealing space 43 in a state where the sealing space 43 is formed inside the ring-shaped sealing member 44, the atmospheric pressure causes the molding area of the sheet 1 to be three-dimensional while elastically deforming the sealing member 44. The molding area S of the sheet 1 is molded into a three-dimensional shape following the three-dimensional shape of the three-dimensional mold frame 12B.
According to such a configuration, since the upper molding head 11A can be omitted, the configuration can be further simplified.

FIG. 7 shows a fourth embodiment of the present invention. In the third embodiment, the sheet 1 is pressed against the three-dimensional frame 12B using atmospheric pressure, whereas in the present embodiment, compression is performed. The sheet 1 is pressed against the three-dimensional mold 12B using air (positive pressure).
That is, in the present embodiment, the upper female three-dimensional molding 12A in the first embodiment is omitted, and a flat support plate 48 is parallel to the sheet 1 at the lower end of the upper molding head 11A. Provided. Further, a ring-shaped elastic seal member 49 is provided on the lower surface of the support plate 48 at a position around the lower three-dimensional mold 12B to ensure airtightness, and the lower molding head 11B is also provided with a lower three-dimensional mold. In order to support the sheet 1 around the molding area S, a support plate 50 is provided at a position around the mold frame 12B.
The ring-shaped seal member 49 is in close contact with the upper surface of the sheet 1 when the upper molding head 11A is lowered toward the sheet 1 by the drive motor 14A of the press contact means 13, and the inside of the ring-shaped seal member 49 In this case, the lower support plate 50 supports the sheet 1 around the molding area S from below, and ensures the above-mentioned sealed space 52 well. Can be done.
That is, in this embodiment, the sealed space 52 formed inside the seal member 49 is formed on the opposite side of the sheet 1 with the three-dimensional mold frame 12B interposed therebetween. The front end of the positive pressure passage 53 is opened inside the seal member 49, and the positive pressure passage 53 communicates with the compressed air source 54. The heating passage 33 of the heating means 31 is also opened inside the seal member 49.

  In the fourth embodiment, the sealed space 52 can be formed inside the seal member 49 by sandwiching the sheet 1 between the upper and lower support plates 48 and 50. In this state, if compressed air is supplied from the positive pressure passage 53 into the sealed space 52 while heating the forming section S of the sheet 1 through the heating passage 33, the forming section S is formed in the lower three-dimensional mold 12B. Therefore, the forming area S of the sheet 1 can be formed into a three-dimensional shape that follows the three-dimensional shape of the three-dimensional mold 12B.

FIG. 8 shows a fifth embodiment of the present invention, and the three-dimensional molds 12A and 12B in the first embodiment are configured by bundling a number of thin linear bodies 22 having hemispherical tips. In this embodiment, a three-dimensional frame 59 can be formed by a small number of thick linear bodies 58.
In this embodiment, the cylindrical member is radially divided into 10 parts to form ten cross-sectional fan-like linear bodies 58, and the front end surface of the linear body 58 forming the three-dimensional frame 59 is the same as the sheet 1. Each is formed in a plane so as to be parallel.
The driving means (not shown) for moving the linear bodies 58 forward and backward can individually advance and retract the linear bodies 58 to either one of a position advanced by a predetermined distance L and a position retracted. It is like that.
The three-dimensional form 59 having such a configuration is suitable for forming the step-shaped three-dimensional object 60 shown in FIG. 9, and the structure can be simplified as compared with the above-described embodiment. It is possible to mold quickly.

In the fifth embodiment, the configurations shown in the second to fourth embodiments can be employed.
In the embodiment described above, only one set or one forming head 11A, 11B, 59 is used, but two sets or two or more forming heads can be used. In this case, it is necessary to consider that a plurality of molding heads do not collide with each other, but the working time can be greatly shortened.

DESCRIPTION OF SYMBOLS 1 Sheet | seat 2 Sheet | seat holding means 7 Relative moving means 11A, 11B, 59 Forming head 12A, 12B Three-dimensional form frame 13 Pressing means 22, 58 Linear body 24 Drive means 31 Heating means 33 Heating passage 35 Control apparatus 41 Elastic member 43, 52 Sealed space 44, 49 Seal member 53 Positive pressure passage S Molding area

Claims (6)

A method of forming a three-dimensional object in which a planar sheet is pressed against a three-dimensional mold frame having a required shape, and the sheet is formed into a three-dimensional object having a required shape
The sheet is divided into a plurality of molding areas, and one of the molding areas is pressed against a three-dimensional mold frame that matches the three-dimensional shape required for the molding area, and the molding area is formed into a three-dimensional shape that follows the three-dimensional mold frame. Next, the shape of the three-dimensional mold is changed to a shape suitable for the three-dimensional shape required for the next molding area, and the three-dimensional mold is moved relative to the next molding area to be molded. Then, the molding area to be molded next is pressed against the three-dimensional mold frame to form the molding area into a three-dimensional shape following the three-dimensional mold frame, and this is repeated for each molding area, A method for forming a three-dimensional object, wherein the three-dimensional shape is made continuous to form the entire sheet into a three-dimensional object having the required shape. A sheet holding means for holding a flat sheet formed in three dimensions, a plurality of linear bodies each having a tip portion that can be freely protruded and projected on the molding head, and a forward and backward movement of each linear body, A driving means for forming a three-dimensional mold frame formed by the leading end portion at the leading end of the forming head; a relative moving means for relatively moving the sheet holding means and the forming head in a direction parallel to the surface of the sheet; and the sheet. A pressing means for pressing the sheet held by the holding means and the three-dimensional mold formed at the tip of the molding head to form a three-dimensional shape following the three-dimensional mold; and the sheet A plurality of molding areas formed by partitioning and a control device storing each three-dimensional shape required for each molding area;
The control device controls the relative moving means to move the forming head to a predetermined forming area, and controls the driving means to add a three-dimensional mold frame formed by the tip of each linear body to the forming area. Forming a conformable three-dimensional mold frame, further controlling the press contact means to press the three-dimensional mold frame against the forming area of the sheet, and forming the three-dimensional shape of the sheet following the three-dimensional mold frame An apparatus for forming a three-dimensional object, which is formed and repeated for each forming area, and the three-dimensional shape of adjacent molding areas is made continuous to form the entire sheet into a three-dimensional object having a required shape.   The molding head is provided on both sides of the sheet held by the sheet holding means, and the three-dimensional frame formed at the tip of one molding head is a female mold, and the tip of the other molding head is The formed three-dimensional frame is formed into a male shape, and the press contact means sandwiches the sheet between the female three-dimensional frame and the male three-dimensional frame to form a three-dimensional shape following these three-dimensional frames. The apparatus for forming a three-dimensional object according to claim 2, wherein the apparatus is formed.   The pressure contact means includes an elastic member, and the elastic member presses the sheet held by the sheet holding means to a three-dimensional mold frame formed at the tip of the forming head. The three-dimensional object molding apparatus described.   The pressure contact means includes an elastic seal member that surrounds the three-dimensional mold frame to form a sealed space around the three-dimensional mold frame, and a negative pressure passage that introduces a vacuum pressure into the sealed space. A three-dimensional mold in which the sheet is formed at the front end portion of the molding head at atmospheric pressure by introducing a vacuum pressure from the negative pressure passage to the sealed space in a state where the sealing member is in close contact with the sheet to form a sealed space. The apparatus for forming a three-dimensional object according to claim 2, wherein the apparatus is pressed against the frame.   The pressure contact means includes a seal member that forms a sealed space on the opposite side of the sheet across the three-dimensional form frame, and a positive pressure passage that introduces positive pressure into the sealed space, and the seal member is attached to the sheet. With the positive pressure introduced from the positive pressure passage into the sealed space in a state where the sealed space is formed in close contact with the sheet, the sheet is pressed against the three-dimensional mold formed at the tip of the molding head with the positive pressure. The apparatus for forming a three-dimensional object according to claim 2.

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